2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/dmi.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
37 #include <drm/i915_drm.h>
39 #include "i915_gem_dmabuf.h"
40 #include "intel_dsi.h"
41 #include "i915_trace.h"
42 #include <drm/drm_atomic.h>
43 #include <drm/drm_atomic_helper.h>
44 #include <drm/drm_dp_helper.h>
45 #include <drm/drm_crtc_helper.h>
46 #include <drm/drm_plane_helper.h>
47 #include <drm/drm_rect.h>
48 #include <linux/dma_remapping.h>
49 #include <linux/reservation.h>
51 static bool is_mmio_work(struct intel_flip_work *work)
53 return work->mmio_work.func;
56 /* Primary plane formats for gen <= 3 */
57 static const uint32_t i8xx_primary_formats[] = {
64 /* Primary plane formats for gen >= 4 */
65 static const uint32_t i965_primary_formats[] = {
70 DRM_FORMAT_XRGB2101010,
71 DRM_FORMAT_XBGR2101010,
74 static const uint32_t skl_primary_formats[] = {
81 DRM_FORMAT_XRGB2101010,
82 DRM_FORMAT_XBGR2101010,
90 static const uint32_t intel_cursor_formats[] = {
94 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
95 struct intel_crtc_state *pipe_config);
96 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
97 struct intel_crtc_state *pipe_config);
99 static int intel_framebuffer_init(struct drm_device *dev,
100 struct intel_framebuffer *ifb,
101 struct drm_mode_fb_cmd2 *mode_cmd,
102 struct drm_i915_gem_object *obj);
103 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
104 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
105 static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc);
106 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
107 struct intel_link_m_n *m_n,
108 struct intel_link_m_n *m2_n2);
109 static void ironlake_set_pipeconf(struct drm_crtc *crtc);
110 static void haswell_set_pipeconf(struct drm_crtc *crtc);
111 static void haswell_set_pipemisc(struct drm_crtc *crtc);
112 static void vlv_prepare_pll(struct intel_crtc *crtc,
113 const struct intel_crtc_state *pipe_config);
114 static void chv_prepare_pll(struct intel_crtc *crtc,
115 const struct intel_crtc_state *pipe_config);
116 static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
117 static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
118 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
119 struct intel_crtc_state *crtc_state);
120 static void skylake_pfit_enable(struct intel_crtc *crtc);
121 static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
122 static void ironlake_pfit_enable(struct intel_crtc *crtc);
123 static void intel_modeset_setup_hw_state(struct drm_device *dev);
124 static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
125 static int ilk_max_pixel_rate(struct drm_atomic_state *state);
126 static int bxt_calc_cdclk(int max_pixclk);
131 } dot, vco, n, m, m1, m2, p, p1;
135 int p2_slow, p2_fast;
139 /* returns HPLL frequency in kHz */
140 static int valleyview_get_vco(struct drm_i915_private *dev_priv)
142 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
144 /* Obtain SKU information */
145 mutex_lock(&dev_priv->sb_lock);
146 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
147 CCK_FUSE_HPLL_FREQ_MASK;
148 mutex_unlock(&dev_priv->sb_lock);
150 return vco_freq[hpll_freq] * 1000;
153 int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
154 const char *name, u32 reg, int ref_freq)
159 mutex_lock(&dev_priv->sb_lock);
160 val = vlv_cck_read(dev_priv, reg);
161 mutex_unlock(&dev_priv->sb_lock);
163 divider = val & CCK_FREQUENCY_VALUES;
165 WARN((val & CCK_FREQUENCY_STATUS) !=
166 (divider << CCK_FREQUENCY_STATUS_SHIFT),
167 "%s change in progress\n", name);
169 return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
172 static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
173 const char *name, u32 reg)
175 if (dev_priv->hpll_freq == 0)
176 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
178 return vlv_get_cck_clock(dev_priv, name, reg,
179 dev_priv->hpll_freq);
183 intel_pch_rawclk(struct drm_i915_private *dev_priv)
185 return (I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK) * 1000;
189 intel_vlv_hrawclk(struct drm_i915_private *dev_priv)
191 /* RAWCLK_FREQ_VLV register updated from power well code */
192 return vlv_get_cck_clock_hpll(dev_priv, "hrawclk",
193 CCK_DISPLAY_REF_CLOCK_CONTROL);
197 intel_g4x_hrawclk(struct drm_i915_private *dev_priv)
201 /* hrawclock is 1/4 the FSB frequency */
202 clkcfg = I915_READ(CLKCFG);
203 switch (clkcfg & CLKCFG_FSB_MASK) {
212 case CLKCFG_FSB_1067:
214 case CLKCFG_FSB_1333:
216 /* these two are just a guess; one of them might be right */
217 case CLKCFG_FSB_1600:
218 case CLKCFG_FSB_1600_ALT:
225 void intel_update_rawclk(struct drm_i915_private *dev_priv)
227 if (HAS_PCH_SPLIT(dev_priv))
228 dev_priv->rawclk_freq = intel_pch_rawclk(dev_priv);
229 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
230 dev_priv->rawclk_freq = intel_vlv_hrawclk(dev_priv);
231 else if (IS_G4X(dev_priv) || IS_PINEVIEW(dev_priv))
232 dev_priv->rawclk_freq = intel_g4x_hrawclk(dev_priv);
234 return; /* no rawclk on other platforms, or no need to know it */
236 DRM_DEBUG_DRIVER("rawclk rate: %d kHz\n", dev_priv->rawclk_freq);
239 static void intel_update_czclk(struct drm_i915_private *dev_priv)
241 if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
244 dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
245 CCK_CZ_CLOCK_CONTROL);
247 DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
250 static inline u32 /* units of 100MHz */
251 intel_fdi_link_freq(struct drm_i915_private *dev_priv,
252 const struct intel_crtc_state *pipe_config)
254 if (HAS_DDI(dev_priv))
255 return pipe_config->port_clock; /* SPLL */
256 else if (IS_GEN5(dev_priv))
257 return ((I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2) * 10000;
262 static const struct intel_limit intel_limits_i8xx_dac = {
263 .dot = { .min = 25000, .max = 350000 },
264 .vco = { .min = 908000, .max = 1512000 },
265 .n = { .min = 2, .max = 16 },
266 .m = { .min = 96, .max = 140 },
267 .m1 = { .min = 18, .max = 26 },
268 .m2 = { .min = 6, .max = 16 },
269 .p = { .min = 4, .max = 128 },
270 .p1 = { .min = 2, .max = 33 },
271 .p2 = { .dot_limit = 165000,
272 .p2_slow = 4, .p2_fast = 2 },
275 static const struct intel_limit intel_limits_i8xx_dvo = {
276 .dot = { .min = 25000, .max = 350000 },
277 .vco = { .min = 908000, .max = 1512000 },
278 .n = { .min = 2, .max = 16 },
279 .m = { .min = 96, .max = 140 },
280 .m1 = { .min = 18, .max = 26 },
281 .m2 = { .min = 6, .max = 16 },
282 .p = { .min = 4, .max = 128 },
283 .p1 = { .min = 2, .max = 33 },
284 .p2 = { .dot_limit = 165000,
285 .p2_slow = 4, .p2_fast = 4 },
288 static const struct intel_limit intel_limits_i8xx_lvds = {
289 .dot = { .min = 25000, .max = 350000 },
290 .vco = { .min = 908000, .max = 1512000 },
291 .n = { .min = 2, .max = 16 },
292 .m = { .min = 96, .max = 140 },
293 .m1 = { .min = 18, .max = 26 },
294 .m2 = { .min = 6, .max = 16 },
295 .p = { .min = 4, .max = 128 },
296 .p1 = { .min = 1, .max = 6 },
297 .p2 = { .dot_limit = 165000,
298 .p2_slow = 14, .p2_fast = 7 },
301 static const struct intel_limit intel_limits_i9xx_sdvo = {
302 .dot = { .min = 20000, .max = 400000 },
303 .vco = { .min = 1400000, .max = 2800000 },
304 .n = { .min = 1, .max = 6 },
305 .m = { .min = 70, .max = 120 },
306 .m1 = { .min = 8, .max = 18 },
307 .m2 = { .min = 3, .max = 7 },
308 .p = { .min = 5, .max = 80 },
309 .p1 = { .min = 1, .max = 8 },
310 .p2 = { .dot_limit = 200000,
311 .p2_slow = 10, .p2_fast = 5 },
314 static const struct intel_limit intel_limits_i9xx_lvds = {
315 .dot = { .min = 20000, .max = 400000 },
316 .vco = { .min = 1400000, .max = 2800000 },
317 .n = { .min = 1, .max = 6 },
318 .m = { .min = 70, .max = 120 },
319 .m1 = { .min = 8, .max = 18 },
320 .m2 = { .min = 3, .max = 7 },
321 .p = { .min = 7, .max = 98 },
322 .p1 = { .min = 1, .max = 8 },
323 .p2 = { .dot_limit = 112000,
324 .p2_slow = 14, .p2_fast = 7 },
328 static const struct intel_limit intel_limits_g4x_sdvo = {
329 .dot = { .min = 25000, .max = 270000 },
330 .vco = { .min = 1750000, .max = 3500000},
331 .n = { .min = 1, .max = 4 },
332 .m = { .min = 104, .max = 138 },
333 .m1 = { .min = 17, .max = 23 },
334 .m2 = { .min = 5, .max = 11 },
335 .p = { .min = 10, .max = 30 },
336 .p1 = { .min = 1, .max = 3},
337 .p2 = { .dot_limit = 270000,
343 static const struct intel_limit intel_limits_g4x_hdmi = {
344 .dot = { .min = 22000, .max = 400000 },
345 .vco = { .min = 1750000, .max = 3500000},
346 .n = { .min = 1, .max = 4 },
347 .m = { .min = 104, .max = 138 },
348 .m1 = { .min = 16, .max = 23 },
349 .m2 = { .min = 5, .max = 11 },
350 .p = { .min = 5, .max = 80 },
351 .p1 = { .min = 1, .max = 8},
352 .p2 = { .dot_limit = 165000,
353 .p2_slow = 10, .p2_fast = 5 },
356 static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
357 .dot = { .min = 20000, .max = 115000 },
358 .vco = { .min = 1750000, .max = 3500000 },
359 .n = { .min = 1, .max = 3 },
360 .m = { .min = 104, .max = 138 },
361 .m1 = { .min = 17, .max = 23 },
362 .m2 = { .min = 5, .max = 11 },
363 .p = { .min = 28, .max = 112 },
364 .p1 = { .min = 2, .max = 8 },
365 .p2 = { .dot_limit = 0,
366 .p2_slow = 14, .p2_fast = 14
370 static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
371 .dot = { .min = 80000, .max = 224000 },
372 .vco = { .min = 1750000, .max = 3500000 },
373 .n = { .min = 1, .max = 3 },
374 .m = { .min = 104, .max = 138 },
375 .m1 = { .min = 17, .max = 23 },
376 .m2 = { .min = 5, .max = 11 },
377 .p = { .min = 14, .max = 42 },
378 .p1 = { .min = 2, .max = 6 },
379 .p2 = { .dot_limit = 0,
380 .p2_slow = 7, .p2_fast = 7
384 static const struct intel_limit intel_limits_pineview_sdvo = {
385 .dot = { .min = 20000, .max = 400000},
386 .vco = { .min = 1700000, .max = 3500000 },
387 /* Pineview's Ncounter is a ring counter */
388 .n = { .min = 3, .max = 6 },
389 .m = { .min = 2, .max = 256 },
390 /* Pineview only has one combined m divider, which we treat as m2. */
391 .m1 = { .min = 0, .max = 0 },
392 .m2 = { .min = 0, .max = 254 },
393 .p = { .min = 5, .max = 80 },
394 .p1 = { .min = 1, .max = 8 },
395 .p2 = { .dot_limit = 200000,
396 .p2_slow = 10, .p2_fast = 5 },
399 static const struct intel_limit intel_limits_pineview_lvds = {
400 .dot = { .min = 20000, .max = 400000 },
401 .vco = { .min = 1700000, .max = 3500000 },
402 .n = { .min = 3, .max = 6 },
403 .m = { .min = 2, .max = 256 },
404 .m1 = { .min = 0, .max = 0 },
405 .m2 = { .min = 0, .max = 254 },
406 .p = { .min = 7, .max = 112 },
407 .p1 = { .min = 1, .max = 8 },
408 .p2 = { .dot_limit = 112000,
409 .p2_slow = 14, .p2_fast = 14 },
412 /* Ironlake / Sandybridge
414 * We calculate clock using (register_value + 2) for N/M1/M2, so here
415 * the range value for them is (actual_value - 2).
417 static const struct intel_limit intel_limits_ironlake_dac = {
418 .dot = { .min = 25000, .max = 350000 },
419 .vco = { .min = 1760000, .max = 3510000 },
420 .n = { .min = 1, .max = 5 },
421 .m = { .min = 79, .max = 127 },
422 .m1 = { .min = 12, .max = 22 },
423 .m2 = { .min = 5, .max = 9 },
424 .p = { .min = 5, .max = 80 },
425 .p1 = { .min = 1, .max = 8 },
426 .p2 = { .dot_limit = 225000,
427 .p2_slow = 10, .p2_fast = 5 },
430 static const struct intel_limit intel_limits_ironlake_single_lvds = {
431 .dot = { .min = 25000, .max = 350000 },
432 .vco = { .min = 1760000, .max = 3510000 },
433 .n = { .min = 1, .max = 3 },
434 .m = { .min = 79, .max = 118 },
435 .m1 = { .min = 12, .max = 22 },
436 .m2 = { .min = 5, .max = 9 },
437 .p = { .min = 28, .max = 112 },
438 .p1 = { .min = 2, .max = 8 },
439 .p2 = { .dot_limit = 225000,
440 .p2_slow = 14, .p2_fast = 14 },
443 static const struct intel_limit intel_limits_ironlake_dual_lvds = {
444 .dot = { .min = 25000, .max = 350000 },
445 .vco = { .min = 1760000, .max = 3510000 },
446 .n = { .min = 1, .max = 3 },
447 .m = { .min = 79, .max = 127 },
448 .m1 = { .min = 12, .max = 22 },
449 .m2 = { .min = 5, .max = 9 },
450 .p = { .min = 14, .max = 56 },
451 .p1 = { .min = 2, .max = 8 },
452 .p2 = { .dot_limit = 225000,
453 .p2_slow = 7, .p2_fast = 7 },
456 /* LVDS 100mhz refclk limits. */
457 static const struct intel_limit intel_limits_ironlake_single_lvds_100m = {
458 .dot = { .min = 25000, .max = 350000 },
459 .vco = { .min = 1760000, .max = 3510000 },
460 .n = { .min = 1, .max = 2 },
461 .m = { .min = 79, .max = 126 },
462 .m1 = { .min = 12, .max = 22 },
463 .m2 = { .min = 5, .max = 9 },
464 .p = { .min = 28, .max = 112 },
465 .p1 = { .min = 2, .max = 8 },
466 .p2 = { .dot_limit = 225000,
467 .p2_slow = 14, .p2_fast = 14 },
470 static const struct intel_limit intel_limits_ironlake_dual_lvds_100m = {
471 .dot = { .min = 25000, .max = 350000 },
472 .vco = { .min = 1760000, .max = 3510000 },
473 .n = { .min = 1, .max = 3 },
474 .m = { .min = 79, .max = 126 },
475 .m1 = { .min = 12, .max = 22 },
476 .m2 = { .min = 5, .max = 9 },
477 .p = { .min = 14, .max = 42 },
478 .p1 = { .min = 2, .max = 6 },
479 .p2 = { .dot_limit = 225000,
480 .p2_slow = 7, .p2_fast = 7 },
483 static const struct intel_limit intel_limits_vlv = {
485 * These are the data rate limits (measured in fast clocks)
486 * since those are the strictest limits we have. The fast
487 * clock and actual rate limits are more relaxed, so checking
488 * them would make no difference.
490 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
491 .vco = { .min = 4000000, .max = 6000000 },
492 .n = { .min = 1, .max = 7 },
493 .m1 = { .min = 2, .max = 3 },
494 .m2 = { .min = 11, .max = 156 },
495 .p1 = { .min = 2, .max = 3 },
496 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
499 static const struct intel_limit intel_limits_chv = {
501 * These are the data rate limits (measured in fast clocks)
502 * since those are the strictest limits we have. The fast
503 * clock and actual rate limits are more relaxed, so checking
504 * them would make no difference.
506 .dot = { .min = 25000 * 5, .max = 540000 * 5},
507 .vco = { .min = 4800000, .max = 6480000 },
508 .n = { .min = 1, .max = 1 },
509 .m1 = { .min = 2, .max = 2 },
510 .m2 = { .min = 24 << 22, .max = 175 << 22 },
511 .p1 = { .min = 2, .max = 4 },
512 .p2 = { .p2_slow = 1, .p2_fast = 14 },
515 static const struct intel_limit intel_limits_bxt = {
516 /* FIXME: find real dot limits */
517 .dot = { .min = 0, .max = INT_MAX },
518 .vco = { .min = 4800000, .max = 6700000 },
519 .n = { .min = 1, .max = 1 },
520 .m1 = { .min = 2, .max = 2 },
521 /* FIXME: find real m2 limits */
522 .m2 = { .min = 2 << 22, .max = 255 << 22 },
523 .p1 = { .min = 2, .max = 4 },
524 .p2 = { .p2_slow = 1, .p2_fast = 20 },
528 needs_modeset(struct drm_crtc_state *state)
530 return drm_atomic_crtc_needs_modeset(state);
534 * Returns whether any output on the specified pipe is of the specified type
536 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
538 struct drm_device *dev = crtc->base.dev;
539 struct intel_encoder *encoder;
541 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
542 if (encoder->type == type)
549 * Returns whether any output on the specified pipe will have the specified
550 * type after a staged modeset is complete, i.e., the same as
551 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
554 static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
557 struct drm_atomic_state *state = crtc_state->base.state;
558 struct drm_connector *connector;
559 struct drm_connector_state *connector_state;
560 struct intel_encoder *encoder;
561 int i, num_connectors = 0;
563 for_each_connector_in_state(state, connector, connector_state, i) {
564 if (connector_state->crtc != crtc_state->base.crtc)
569 encoder = to_intel_encoder(connector_state->best_encoder);
570 if (encoder->type == type)
574 WARN_ON(num_connectors == 0);
580 * Platform specific helpers to calculate the port PLL loopback- (clock.m),
581 * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
582 * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
583 * The helpers' return value is the rate of the clock that is fed to the
584 * display engine's pipe which can be the above fast dot clock rate or a
585 * divided-down version of it.
587 /* m1 is reserved as 0 in Pineview, n is a ring counter */
588 static int pnv_calc_dpll_params(int refclk, struct dpll *clock)
590 clock->m = clock->m2 + 2;
591 clock->p = clock->p1 * clock->p2;
592 if (WARN_ON(clock->n == 0 || clock->p == 0))
594 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
595 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
600 static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
602 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
605 static int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
607 clock->m = i9xx_dpll_compute_m(clock);
608 clock->p = clock->p1 * clock->p2;
609 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
611 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
612 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
617 static int vlv_calc_dpll_params(int refclk, struct dpll *clock)
619 clock->m = clock->m1 * clock->m2;
620 clock->p = clock->p1 * clock->p2;
621 if (WARN_ON(clock->n == 0 || clock->p == 0))
623 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
624 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
626 return clock->dot / 5;
629 int chv_calc_dpll_params(int refclk, struct dpll *clock)
631 clock->m = clock->m1 * clock->m2;
632 clock->p = clock->p1 * clock->p2;
633 if (WARN_ON(clock->n == 0 || clock->p == 0))
635 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
637 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
639 return clock->dot / 5;
642 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
644 * Returns whether the given set of divisors are valid for a given refclk with
645 * the given connectors.
648 static bool intel_PLL_is_valid(struct drm_device *dev,
649 const struct intel_limit *limit,
650 const struct dpll *clock)
652 if (clock->n < limit->n.min || limit->n.max < clock->n)
653 INTELPllInvalid("n out of range\n");
654 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
655 INTELPllInvalid("p1 out of range\n");
656 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
657 INTELPllInvalid("m2 out of range\n");
658 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
659 INTELPllInvalid("m1 out of range\n");
661 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) &&
662 !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev))
663 if (clock->m1 <= clock->m2)
664 INTELPllInvalid("m1 <= m2\n");
666 if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev)) {
667 if (clock->p < limit->p.min || limit->p.max < clock->p)
668 INTELPllInvalid("p out of range\n");
669 if (clock->m < limit->m.min || limit->m.max < clock->m)
670 INTELPllInvalid("m out of range\n");
673 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
674 INTELPllInvalid("vco out of range\n");
675 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
676 * connector, etc., rather than just a single range.
678 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
679 INTELPllInvalid("dot out of range\n");
685 i9xx_select_p2_div(const struct intel_limit *limit,
686 const struct intel_crtc_state *crtc_state,
689 struct drm_device *dev = crtc_state->base.crtc->dev;
691 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
693 * For LVDS just rely on its current settings for dual-channel.
694 * We haven't figured out how to reliably set up different
695 * single/dual channel state, if we even can.
697 if (intel_is_dual_link_lvds(dev))
698 return limit->p2.p2_fast;
700 return limit->p2.p2_slow;
702 if (target < limit->p2.dot_limit)
703 return limit->p2.p2_slow;
705 return limit->p2.p2_fast;
710 * Returns a set of divisors for the desired target clock with the given
711 * refclk, or FALSE. The returned values represent the clock equation:
712 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
714 * Target and reference clocks are specified in kHz.
716 * If match_clock is provided, then best_clock P divider must match the P
717 * divider from @match_clock used for LVDS downclocking.
720 i9xx_find_best_dpll(const struct intel_limit *limit,
721 struct intel_crtc_state *crtc_state,
722 int target, int refclk, struct dpll *match_clock,
723 struct dpll *best_clock)
725 struct drm_device *dev = crtc_state->base.crtc->dev;
729 memset(best_clock, 0, sizeof(*best_clock));
731 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
733 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
735 for (clock.m2 = limit->m2.min;
736 clock.m2 <= limit->m2.max; clock.m2++) {
737 if (clock.m2 >= clock.m1)
739 for (clock.n = limit->n.min;
740 clock.n <= limit->n.max; clock.n++) {
741 for (clock.p1 = limit->p1.min;
742 clock.p1 <= limit->p1.max; clock.p1++) {
745 i9xx_calc_dpll_params(refclk, &clock);
746 if (!intel_PLL_is_valid(dev, limit,
750 clock.p != match_clock->p)
753 this_err = abs(clock.dot - target);
754 if (this_err < err) {
763 return (err != target);
767 * Returns a set of divisors for the desired target clock with the given
768 * refclk, or FALSE. The returned values represent the clock equation:
769 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
771 * Target and reference clocks are specified in kHz.
773 * If match_clock is provided, then best_clock P divider must match the P
774 * divider from @match_clock used for LVDS downclocking.
777 pnv_find_best_dpll(const struct intel_limit *limit,
778 struct intel_crtc_state *crtc_state,
779 int target, int refclk, struct dpll *match_clock,
780 struct dpll *best_clock)
782 struct drm_device *dev = crtc_state->base.crtc->dev;
786 memset(best_clock, 0, sizeof(*best_clock));
788 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
790 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
792 for (clock.m2 = limit->m2.min;
793 clock.m2 <= limit->m2.max; clock.m2++) {
794 for (clock.n = limit->n.min;
795 clock.n <= limit->n.max; clock.n++) {
796 for (clock.p1 = limit->p1.min;
797 clock.p1 <= limit->p1.max; clock.p1++) {
800 pnv_calc_dpll_params(refclk, &clock);
801 if (!intel_PLL_is_valid(dev, limit,
805 clock.p != match_clock->p)
808 this_err = abs(clock.dot - target);
809 if (this_err < err) {
818 return (err != target);
822 * Returns a set of divisors for the desired target clock with the given
823 * refclk, or FALSE. The returned values represent the clock equation:
824 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
826 * Target and reference clocks are specified in kHz.
828 * If match_clock is provided, then best_clock P divider must match the P
829 * divider from @match_clock used for LVDS downclocking.
832 g4x_find_best_dpll(const struct intel_limit *limit,
833 struct intel_crtc_state *crtc_state,
834 int target, int refclk, struct dpll *match_clock,
835 struct dpll *best_clock)
837 struct drm_device *dev = crtc_state->base.crtc->dev;
841 /* approximately equals target * 0.00585 */
842 int err_most = (target >> 8) + (target >> 9);
844 memset(best_clock, 0, sizeof(*best_clock));
846 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
848 max_n = limit->n.max;
849 /* based on hardware requirement, prefer smaller n to precision */
850 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
851 /* based on hardware requirement, prefere larger m1,m2 */
852 for (clock.m1 = limit->m1.max;
853 clock.m1 >= limit->m1.min; clock.m1--) {
854 for (clock.m2 = limit->m2.max;
855 clock.m2 >= limit->m2.min; clock.m2--) {
856 for (clock.p1 = limit->p1.max;
857 clock.p1 >= limit->p1.min; clock.p1--) {
860 i9xx_calc_dpll_params(refclk, &clock);
861 if (!intel_PLL_is_valid(dev, limit,
865 this_err = abs(clock.dot - target);
866 if (this_err < err_most) {
880 * Check if the calculated PLL configuration is more optimal compared to the
881 * best configuration and error found so far. Return the calculated error.
883 static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
884 const struct dpll *calculated_clock,
885 const struct dpll *best_clock,
886 unsigned int best_error_ppm,
887 unsigned int *error_ppm)
890 * For CHV ignore the error and consider only the P value.
891 * Prefer a bigger P value based on HW requirements.
893 if (IS_CHERRYVIEW(dev)) {
896 return calculated_clock->p > best_clock->p;
899 if (WARN_ON_ONCE(!target_freq))
902 *error_ppm = div_u64(1000000ULL *
903 abs(target_freq - calculated_clock->dot),
906 * Prefer a better P value over a better (smaller) error if the error
907 * is small. Ensure this preference for future configurations too by
908 * setting the error to 0.
910 if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
916 return *error_ppm + 10 < best_error_ppm;
920 * Returns a set of divisors for the desired target clock with the given
921 * refclk, or FALSE. The returned values represent the clock equation:
922 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
925 vlv_find_best_dpll(const struct intel_limit *limit,
926 struct intel_crtc_state *crtc_state,
927 int target, int refclk, struct dpll *match_clock,
928 struct dpll *best_clock)
930 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
931 struct drm_device *dev = crtc->base.dev;
933 unsigned int bestppm = 1000000;
934 /* min update 19.2 MHz */
935 int max_n = min(limit->n.max, refclk / 19200);
938 target *= 5; /* fast clock */
940 memset(best_clock, 0, sizeof(*best_clock));
942 /* based on hardware requirement, prefer smaller n to precision */
943 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
944 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
945 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
946 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
947 clock.p = clock.p1 * clock.p2;
948 /* based on hardware requirement, prefer bigger m1,m2 values */
949 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
952 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
955 vlv_calc_dpll_params(refclk, &clock);
957 if (!intel_PLL_is_valid(dev, limit,
961 if (!vlv_PLL_is_optimal(dev, target,
979 * Returns a set of divisors for the desired target clock with the given
980 * refclk, or FALSE. The returned values represent the clock equation:
981 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
984 chv_find_best_dpll(const struct intel_limit *limit,
985 struct intel_crtc_state *crtc_state,
986 int target, int refclk, struct dpll *match_clock,
987 struct dpll *best_clock)
989 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
990 struct drm_device *dev = crtc->base.dev;
991 unsigned int best_error_ppm;
996 memset(best_clock, 0, sizeof(*best_clock));
997 best_error_ppm = 1000000;
1000 * Based on hardware doc, the n always set to 1, and m1 always
1001 * set to 2. If requires to support 200Mhz refclk, we need to
1002 * revisit this because n may not 1 anymore.
1004 clock.n = 1, clock.m1 = 2;
1005 target *= 5; /* fast clock */
1007 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
1008 for (clock.p2 = limit->p2.p2_fast;
1009 clock.p2 >= limit->p2.p2_slow;
1010 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
1011 unsigned int error_ppm;
1013 clock.p = clock.p1 * clock.p2;
1015 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
1016 clock.n) << 22, refclk * clock.m1);
1018 if (m2 > INT_MAX/clock.m1)
1023 chv_calc_dpll_params(refclk, &clock);
1025 if (!intel_PLL_is_valid(dev, limit, &clock))
1028 if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
1029 best_error_ppm, &error_ppm))
1032 *best_clock = clock;
1033 best_error_ppm = error_ppm;
1041 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1042 struct dpll *best_clock)
1044 int refclk = 100000;
1045 const struct intel_limit *limit = &intel_limits_bxt;
1047 return chv_find_best_dpll(limit, crtc_state,
1048 target_clock, refclk, NULL, best_clock);
1051 bool intel_crtc_active(struct drm_crtc *crtc)
1053 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1055 /* Be paranoid as we can arrive here with only partial
1056 * state retrieved from the hardware during setup.
1058 * We can ditch the adjusted_mode.crtc_clock check as soon
1059 * as Haswell has gained clock readout/fastboot support.
1061 * We can ditch the crtc->primary->fb check as soon as we can
1062 * properly reconstruct framebuffers.
1064 * FIXME: The intel_crtc->active here should be switched to
1065 * crtc->state->active once we have proper CRTC states wired up
1068 return intel_crtc->active && crtc->primary->state->fb &&
1069 intel_crtc->config->base.adjusted_mode.crtc_clock;
1072 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1075 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1076 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1078 return intel_crtc->config->cpu_transcoder;
1081 static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
1083 struct drm_i915_private *dev_priv = dev->dev_private;
1084 i915_reg_t reg = PIPEDSL(pipe);
1089 line_mask = DSL_LINEMASK_GEN2;
1091 line_mask = DSL_LINEMASK_GEN3;
1093 line1 = I915_READ(reg) & line_mask;
1095 line2 = I915_READ(reg) & line_mask;
1097 return line1 == line2;
1101 * intel_wait_for_pipe_off - wait for pipe to turn off
1102 * @crtc: crtc whose pipe to wait for
1104 * After disabling a pipe, we can't wait for vblank in the usual way,
1105 * spinning on the vblank interrupt status bit, since we won't actually
1106 * see an interrupt when the pipe is disabled.
1108 * On Gen4 and above:
1109 * wait for the pipe register state bit to turn off
1112 * wait for the display line value to settle (it usually
1113 * ends up stopping at the start of the next frame).
1116 static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
1118 struct drm_device *dev = crtc->base.dev;
1119 struct drm_i915_private *dev_priv = dev->dev_private;
1120 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
1121 enum pipe pipe = crtc->pipe;
1123 if (INTEL_INFO(dev)->gen >= 4) {
1124 i915_reg_t reg = PIPECONF(cpu_transcoder);
1126 /* Wait for the Pipe State to go off */
1127 if (intel_wait_for_register(dev_priv,
1128 reg, I965_PIPECONF_ACTIVE, 0,
1130 WARN(1, "pipe_off wait timed out\n");
1132 /* Wait for the display line to settle */
1133 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
1134 WARN(1, "pipe_off wait timed out\n");
1138 /* Only for pre-ILK configs */
1139 void assert_pll(struct drm_i915_private *dev_priv,
1140 enum pipe pipe, bool state)
1145 val = I915_READ(DPLL(pipe));
1146 cur_state = !!(val & DPLL_VCO_ENABLE);
1147 I915_STATE_WARN(cur_state != state,
1148 "PLL state assertion failure (expected %s, current %s)\n",
1149 onoff(state), onoff(cur_state));
1152 /* XXX: the dsi pll is shared between MIPI DSI ports */
1153 void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1158 mutex_lock(&dev_priv->sb_lock);
1159 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1160 mutex_unlock(&dev_priv->sb_lock);
1162 cur_state = val & DSI_PLL_VCO_EN;
1163 I915_STATE_WARN(cur_state != state,
1164 "DSI PLL state assertion failure (expected %s, current %s)\n",
1165 onoff(state), onoff(cur_state));
1168 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1169 enum pipe pipe, bool state)
1172 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1175 if (HAS_DDI(dev_priv)) {
1176 /* DDI does not have a specific FDI_TX register */
1177 u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1178 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1180 u32 val = I915_READ(FDI_TX_CTL(pipe));
1181 cur_state = !!(val & FDI_TX_ENABLE);
1183 I915_STATE_WARN(cur_state != state,
1184 "FDI TX state assertion failure (expected %s, current %s)\n",
1185 onoff(state), onoff(cur_state));
1187 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1188 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1190 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1191 enum pipe pipe, bool state)
1196 val = I915_READ(FDI_RX_CTL(pipe));
1197 cur_state = !!(val & FDI_RX_ENABLE);
1198 I915_STATE_WARN(cur_state != state,
1199 "FDI RX state assertion failure (expected %s, current %s)\n",
1200 onoff(state), onoff(cur_state));
1202 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1203 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1205 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1210 /* ILK FDI PLL is always enabled */
1211 if (IS_GEN5(dev_priv))
1214 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1215 if (HAS_DDI(dev_priv))
1218 val = I915_READ(FDI_TX_CTL(pipe));
1219 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1222 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1223 enum pipe pipe, bool state)
1228 val = I915_READ(FDI_RX_CTL(pipe));
1229 cur_state = !!(val & FDI_RX_PLL_ENABLE);
1230 I915_STATE_WARN(cur_state != state,
1231 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1232 onoff(state), onoff(cur_state));
1235 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1238 struct drm_device *dev = dev_priv->dev;
1241 enum pipe panel_pipe = PIPE_A;
1244 if (WARN_ON(HAS_DDI(dev)))
1247 if (HAS_PCH_SPLIT(dev)) {
1250 pp_reg = PCH_PP_CONTROL;
1251 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1253 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1254 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1255 panel_pipe = PIPE_B;
1256 /* XXX: else fix for eDP */
1257 } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
1258 /* presumably write lock depends on pipe, not port select */
1259 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1262 pp_reg = PP_CONTROL;
1263 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1264 panel_pipe = PIPE_B;
1267 val = I915_READ(pp_reg);
1268 if (!(val & PANEL_POWER_ON) ||
1269 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1272 I915_STATE_WARN(panel_pipe == pipe && locked,
1273 "panel assertion failure, pipe %c regs locked\n",
1277 static void assert_cursor(struct drm_i915_private *dev_priv,
1278 enum pipe pipe, bool state)
1280 struct drm_device *dev = dev_priv->dev;
1283 if (IS_845G(dev) || IS_I865G(dev))
1284 cur_state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
1286 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
1288 I915_STATE_WARN(cur_state != state,
1289 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1290 pipe_name(pipe), onoff(state), onoff(cur_state));
1292 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1293 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1295 void assert_pipe(struct drm_i915_private *dev_priv,
1296 enum pipe pipe, bool state)
1299 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1301 enum intel_display_power_domain power_domain;
1303 /* if we need the pipe quirk it must be always on */
1304 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1305 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1308 power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
1309 if (intel_display_power_get_if_enabled(dev_priv, power_domain)) {
1310 u32 val = I915_READ(PIPECONF(cpu_transcoder));
1311 cur_state = !!(val & PIPECONF_ENABLE);
1313 intel_display_power_put(dev_priv, power_domain);
1318 I915_STATE_WARN(cur_state != state,
1319 "pipe %c assertion failure (expected %s, current %s)\n",
1320 pipe_name(pipe), onoff(state), onoff(cur_state));
1323 static void assert_plane(struct drm_i915_private *dev_priv,
1324 enum plane plane, bool state)
1329 val = I915_READ(DSPCNTR(plane));
1330 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1331 I915_STATE_WARN(cur_state != state,
1332 "plane %c assertion failure (expected %s, current %s)\n",
1333 plane_name(plane), onoff(state), onoff(cur_state));
1336 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1337 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1339 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1342 struct drm_device *dev = dev_priv->dev;
1345 /* Primary planes are fixed to pipes on gen4+ */
1346 if (INTEL_INFO(dev)->gen >= 4) {
1347 u32 val = I915_READ(DSPCNTR(pipe));
1348 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
1349 "plane %c assertion failure, should be disabled but not\n",
1354 /* Need to check both planes against the pipe */
1355 for_each_pipe(dev_priv, i) {
1356 u32 val = I915_READ(DSPCNTR(i));
1357 enum pipe cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1358 DISPPLANE_SEL_PIPE_SHIFT;
1359 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1360 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1361 plane_name(i), pipe_name(pipe));
1365 static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1368 struct drm_device *dev = dev_priv->dev;
1371 if (INTEL_INFO(dev)->gen >= 9) {
1372 for_each_sprite(dev_priv, pipe, sprite) {
1373 u32 val = I915_READ(PLANE_CTL(pipe, sprite));
1374 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
1375 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1376 sprite, pipe_name(pipe));
1378 } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
1379 for_each_sprite(dev_priv, pipe, sprite) {
1380 u32 val = I915_READ(SPCNTR(pipe, sprite));
1381 I915_STATE_WARN(val & SP_ENABLE,
1382 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1383 sprite_name(pipe, sprite), pipe_name(pipe));
1385 } else if (INTEL_INFO(dev)->gen >= 7) {
1386 u32 val = I915_READ(SPRCTL(pipe));
1387 I915_STATE_WARN(val & SPRITE_ENABLE,
1388 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1389 plane_name(pipe), pipe_name(pipe));
1390 } else if (INTEL_INFO(dev)->gen >= 5) {
1391 u32 val = I915_READ(DVSCNTR(pipe));
1392 I915_STATE_WARN(val & DVS_ENABLE,
1393 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1394 plane_name(pipe), pipe_name(pipe));
1398 static void assert_vblank_disabled(struct drm_crtc *crtc)
1400 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1401 drm_crtc_vblank_put(crtc);
1404 void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1410 val = I915_READ(PCH_TRANSCONF(pipe));
1411 enabled = !!(val & TRANS_ENABLE);
1412 I915_STATE_WARN(enabled,
1413 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1417 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1418 enum pipe pipe, u32 port_sel, u32 val)
1420 if ((val & DP_PORT_EN) == 0)
1423 if (HAS_PCH_CPT(dev_priv)) {
1424 u32 trans_dp_ctl = I915_READ(TRANS_DP_CTL(pipe));
1425 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1427 } else if (IS_CHERRYVIEW(dev_priv)) {
1428 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1431 if ((val & DP_PIPE_MASK) != (pipe << 30))
1437 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1438 enum pipe pipe, u32 val)
1440 if ((val & SDVO_ENABLE) == 0)
1443 if (HAS_PCH_CPT(dev_priv)) {
1444 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1446 } else if (IS_CHERRYVIEW(dev_priv)) {
1447 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1450 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1456 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1457 enum pipe pipe, u32 val)
1459 if ((val & LVDS_PORT_EN) == 0)
1462 if (HAS_PCH_CPT(dev_priv)) {
1463 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1466 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1472 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1473 enum pipe pipe, u32 val)
1475 if ((val & ADPA_DAC_ENABLE) == 0)
1477 if (HAS_PCH_CPT(dev_priv)) {
1478 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1481 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1487 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1488 enum pipe pipe, i915_reg_t reg,
1491 u32 val = I915_READ(reg);
1492 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1493 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1494 i915_mmio_reg_offset(reg), pipe_name(pipe));
1496 I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & DP_PORT_EN) == 0
1497 && (val & DP_PIPEB_SELECT),
1498 "IBX PCH dp port still using transcoder B\n");
1501 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1502 enum pipe pipe, i915_reg_t reg)
1504 u32 val = I915_READ(reg);
1505 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1506 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1507 i915_mmio_reg_offset(reg), pipe_name(pipe));
1509 I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & SDVO_ENABLE) == 0
1510 && (val & SDVO_PIPE_B_SELECT),
1511 "IBX PCH hdmi port still using transcoder B\n");
1514 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1519 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1520 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1521 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1523 val = I915_READ(PCH_ADPA);
1524 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1525 "PCH VGA enabled on transcoder %c, should be disabled\n",
1528 val = I915_READ(PCH_LVDS);
1529 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1530 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1533 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1534 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1535 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
1538 static void _vlv_enable_pll(struct intel_crtc *crtc,
1539 const struct intel_crtc_state *pipe_config)
1541 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1542 enum pipe pipe = crtc->pipe;
1544 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1545 POSTING_READ(DPLL(pipe));
1548 if (intel_wait_for_register(dev_priv,
1553 DRM_ERROR("DPLL %d failed to lock\n", pipe);
1556 static void vlv_enable_pll(struct intel_crtc *crtc,
1557 const struct intel_crtc_state *pipe_config)
1559 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1560 enum pipe pipe = crtc->pipe;
1562 assert_pipe_disabled(dev_priv, pipe);
1564 /* PLL is protected by panel, make sure we can write it */
1565 assert_panel_unlocked(dev_priv, pipe);
1567 if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
1568 _vlv_enable_pll(crtc, pipe_config);
1570 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1571 POSTING_READ(DPLL_MD(pipe));
1575 static void _chv_enable_pll(struct intel_crtc *crtc,
1576 const struct intel_crtc_state *pipe_config)
1578 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1579 enum pipe pipe = crtc->pipe;
1580 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1583 mutex_lock(&dev_priv->sb_lock);
1585 /* Enable back the 10bit clock to display controller */
1586 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1587 tmp |= DPIO_DCLKP_EN;
1588 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1590 mutex_unlock(&dev_priv->sb_lock);
1593 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1598 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1600 /* Check PLL is locked */
1601 if (intel_wait_for_register(dev_priv,
1602 DPLL(pipe), DPLL_LOCK_VLV, DPLL_LOCK_VLV,
1604 DRM_ERROR("PLL %d failed to lock\n", pipe);
1607 static void chv_enable_pll(struct intel_crtc *crtc,
1608 const struct intel_crtc_state *pipe_config)
1610 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1611 enum pipe pipe = crtc->pipe;
1613 assert_pipe_disabled(dev_priv, pipe);
1615 /* PLL is protected by panel, make sure we can write it */
1616 assert_panel_unlocked(dev_priv, pipe);
1618 if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
1619 _chv_enable_pll(crtc, pipe_config);
1621 if (pipe != PIPE_A) {
1623 * WaPixelRepeatModeFixForC0:chv
1625 * DPLLCMD is AWOL. Use chicken bits to propagate
1626 * the value from DPLLBMD to either pipe B or C.
1628 I915_WRITE(CBR4_VLV, pipe == PIPE_B ? CBR_DPLLBMD_PIPE_B : CBR_DPLLBMD_PIPE_C);
1629 I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md);
1630 I915_WRITE(CBR4_VLV, 0);
1631 dev_priv->chv_dpll_md[pipe] = pipe_config->dpll_hw_state.dpll_md;
1634 * DPLLB VGA mode also seems to cause problems.
1635 * We should always have it disabled.
1637 WARN_ON((I915_READ(DPLL(PIPE_B)) & DPLL_VGA_MODE_DIS) == 0);
1639 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1640 POSTING_READ(DPLL_MD(pipe));
1644 static int intel_num_dvo_pipes(struct drm_device *dev)
1646 struct intel_crtc *crtc;
1649 for_each_intel_crtc(dev, crtc)
1650 count += crtc->base.state->active &&
1651 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1656 static void i9xx_enable_pll(struct intel_crtc *crtc)
1658 struct drm_device *dev = crtc->base.dev;
1659 struct drm_i915_private *dev_priv = dev->dev_private;
1660 i915_reg_t reg = DPLL(crtc->pipe);
1661 u32 dpll = crtc->config->dpll_hw_state.dpll;
1663 assert_pipe_disabled(dev_priv, crtc->pipe);
1665 /* PLL is protected by panel, make sure we can write it */
1666 if (IS_MOBILE(dev) && !IS_I830(dev))
1667 assert_panel_unlocked(dev_priv, crtc->pipe);
1669 /* Enable DVO 2x clock on both PLLs if necessary */
1670 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1672 * It appears to be important that we don't enable this
1673 * for the current pipe before otherwise configuring the
1674 * PLL. No idea how this should be handled if multiple
1675 * DVO outputs are enabled simultaneosly.
1677 dpll |= DPLL_DVO_2X_MODE;
1678 I915_WRITE(DPLL(!crtc->pipe),
1679 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1683 * Apparently we need to have VGA mode enabled prior to changing
1684 * the P1/P2 dividers. Otherwise the DPLL will keep using the old
1685 * dividers, even though the register value does change.
1689 I915_WRITE(reg, dpll);
1691 /* Wait for the clocks to stabilize. */
1695 if (INTEL_INFO(dev)->gen >= 4) {
1696 I915_WRITE(DPLL_MD(crtc->pipe),
1697 crtc->config->dpll_hw_state.dpll_md);
1699 /* The pixel multiplier can only be updated once the
1700 * DPLL is enabled and the clocks are stable.
1702 * So write it again.
1704 I915_WRITE(reg, dpll);
1707 /* We do this three times for luck */
1708 I915_WRITE(reg, dpll);
1710 udelay(150); /* wait for warmup */
1711 I915_WRITE(reg, dpll);
1713 udelay(150); /* wait for warmup */
1714 I915_WRITE(reg, dpll);
1716 udelay(150); /* wait for warmup */
1720 * i9xx_disable_pll - disable a PLL
1721 * @dev_priv: i915 private structure
1722 * @pipe: pipe PLL to disable
1724 * Disable the PLL for @pipe, making sure the pipe is off first.
1726 * Note! This is for pre-ILK only.
1728 static void i9xx_disable_pll(struct intel_crtc *crtc)
1730 struct drm_device *dev = crtc->base.dev;
1731 struct drm_i915_private *dev_priv = dev->dev_private;
1732 enum pipe pipe = crtc->pipe;
1734 /* Disable DVO 2x clock on both PLLs if necessary */
1736 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1737 !intel_num_dvo_pipes(dev)) {
1738 I915_WRITE(DPLL(PIPE_B),
1739 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1740 I915_WRITE(DPLL(PIPE_A),
1741 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1744 /* Don't disable pipe or pipe PLLs if needed */
1745 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1746 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1749 /* Make sure the pipe isn't still relying on us */
1750 assert_pipe_disabled(dev_priv, pipe);
1752 I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
1753 POSTING_READ(DPLL(pipe));
1756 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1760 /* Make sure the pipe isn't still relying on us */
1761 assert_pipe_disabled(dev_priv, pipe);
1763 val = DPLL_INTEGRATED_REF_CLK_VLV |
1764 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1766 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1768 I915_WRITE(DPLL(pipe), val);
1769 POSTING_READ(DPLL(pipe));
1772 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1774 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1777 /* Make sure the pipe isn't still relying on us */
1778 assert_pipe_disabled(dev_priv, pipe);
1780 val = DPLL_SSC_REF_CLK_CHV |
1781 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1783 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1785 I915_WRITE(DPLL(pipe), val);
1786 POSTING_READ(DPLL(pipe));
1788 mutex_lock(&dev_priv->sb_lock);
1790 /* Disable 10bit clock to display controller */
1791 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1792 val &= ~DPIO_DCLKP_EN;
1793 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1795 mutex_unlock(&dev_priv->sb_lock);
1798 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1799 struct intel_digital_port *dport,
1800 unsigned int expected_mask)
1803 i915_reg_t dpll_reg;
1805 switch (dport->port) {
1807 port_mask = DPLL_PORTB_READY_MASK;
1811 port_mask = DPLL_PORTC_READY_MASK;
1813 expected_mask <<= 4;
1816 port_mask = DPLL_PORTD_READY_MASK;
1817 dpll_reg = DPIO_PHY_STATUS;
1823 if (intel_wait_for_register(dev_priv,
1824 dpll_reg, port_mask, expected_mask,
1826 WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
1827 port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
1830 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1833 struct drm_device *dev = dev_priv->dev;
1834 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1835 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1837 uint32_t val, pipeconf_val;
1839 /* Make sure PCH DPLL is enabled */
1840 assert_shared_dpll_enabled(dev_priv, intel_crtc->config->shared_dpll);
1842 /* FDI must be feeding us bits for PCH ports */
1843 assert_fdi_tx_enabled(dev_priv, pipe);
1844 assert_fdi_rx_enabled(dev_priv, pipe);
1846 if (HAS_PCH_CPT(dev)) {
1847 /* Workaround: Set the timing override bit before enabling the
1848 * pch transcoder. */
1849 reg = TRANS_CHICKEN2(pipe);
1850 val = I915_READ(reg);
1851 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1852 I915_WRITE(reg, val);
1855 reg = PCH_TRANSCONF(pipe);
1856 val = I915_READ(reg);
1857 pipeconf_val = I915_READ(PIPECONF(pipe));
1859 if (HAS_PCH_IBX(dev_priv)) {
1861 * Make the BPC in transcoder be consistent with
1862 * that in pipeconf reg. For HDMI we must use 8bpc
1863 * here for both 8bpc and 12bpc.
1865 val &= ~PIPECONF_BPC_MASK;
1866 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
1867 val |= PIPECONF_8BPC;
1869 val |= pipeconf_val & PIPECONF_BPC_MASK;
1872 val &= ~TRANS_INTERLACE_MASK;
1873 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1874 if (HAS_PCH_IBX(dev_priv) &&
1875 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
1876 val |= TRANS_LEGACY_INTERLACED_ILK;
1878 val |= TRANS_INTERLACED;
1880 val |= TRANS_PROGRESSIVE;
1882 I915_WRITE(reg, val | TRANS_ENABLE);
1883 if (intel_wait_for_register(dev_priv,
1884 reg, TRANS_STATE_ENABLE, TRANS_STATE_ENABLE,
1886 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
1889 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1890 enum transcoder cpu_transcoder)
1892 u32 val, pipeconf_val;
1894 /* FDI must be feeding us bits for PCH ports */
1895 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
1896 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
1898 /* Workaround: set timing override bit. */
1899 val = I915_READ(TRANS_CHICKEN2(PIPE_A));
1900 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1901 I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
1904 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
1906 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
1907 PIPECONF_INTERLACED_ILK)
1908 val |= TRANS_INTERLACED;
1910 val |= TRANS_PROGRESSIVE;
1912 I915_WRITE(LPT_TRANSCONF, val);
1913 if (intel_wait_for_register(dev_priv,
1918 DRM_ERROR("Failed to enable PCH transcoder\n");
1921 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
1924 struct drm_device *dev = dev_priv->dev;
1928 /* FDI relies on the transcoder */
1929 assert_fdi_tx_disabled(dev_priv, pipe);
1930 assert_fdi_rx_disabled(dev_priv, pipe);
1932 /* Ports must be off as well */
1933 assert_pch_ports_disabled(dev_priv, pipe);
1935 reg = PCH_TRANSCONF(pipe);
1936 val = I915_READ(reg);
1937 val &= ~TRANS_ENABLE;
1938 I915_WRITE(reg, val);
1939 /* wait for PCH transcoder off, transcoder state */
1940 if (intel_wait_for_register(dev_priv,
1941 reg, TRANS_STATE_ENABLE, 0,
1943 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
1945 if (HAS_PCH_CPT(dev)) {
1946 /* Workaround: Clear the timing override chicken bit again. */
1947 reg = TRANS_CHICKEN2(pipe);
1948 val = I915_READ(reg);
1949 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1950 I915_WRITE(reg, val);
1954 static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
1958 val = I915_READ(LPT_TRANSCONF);
1959 val &= ~TRANS_ENABLE;
1960 I915_WRITE(LPT_TRANSCONF, val);
1961 /* wait for PCH transcoder off, transcoder state */
1962 if (intel_wait_for_register(dev_priv,
1963 LPT_TRANSCONF, TRANS_STATE_ENABLE, 0,
1965 DRM_ERROR("Failed to disable PCH transcoder\n");
1967 /* Workaround: clear timing override bit. */
1968 val = I915_READ(TRANS_CHICKEN2(PIPE_A));
1969 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1970 I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
1974 * intel_enable_pipe - enable a pipe, asserting requirements
1975 * @crtc: crtc responsible for the pipe
1977 * Enable @crtc's pipe, making sure that various hardware specific requirements
1978 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1980 static void intel_enable_pipe(struct intel_crtc *crtc)
1982 struct drm_device *dev = crtc->base.dev;
1983 struct drm_i915_private *dev_priv = dev->dev_private;
1984 enum pipe pipe = crtc->pipe;
1985 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
1986 enum pipe pch_transcoder;
1990 DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
1992 assert_planes_disabled(dev_priv, pipe);
1993 assert_cursor_disabled(dev_priv, pipe);
1994 assert_sprites_disabled(dev_priv, pipe);
1996 if (HAS_PCH_LPT(dev_priv))
1997 pch_transcoder = TRANSCODER_A;
1999 pch_transcoder = pipe;
2002 * A pipe without a PLL won't actually be able to drive bits from
2003 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2006 if (HAS_GMCH_DISPLAY(dev_priv))
2007 if (crtc->config->has_dsi_encoder)
2008 assert_dsi_pll_enabled(dev_priv);
2010 assert_pll_enabled(dev_priv, pipe);
2012 if (crtc->config->has_pch_encoder) {
2013 /* if driving the PCH, we need FDI enabled */
2014 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
2015 assert_fdi_tx_pll_enabled(dev_priv,
2016 (enum pipe) cpu_transcoder);
2018 /* FIXME: assert CPU port conditions for SNB+ */
2021 reg = PIPECONF(cpu_transcoder);
2022 val = I915_READ(reg);
2023 if (val & PIPECONF_ENABLE) {
2024 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2025 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
2029 I915_WRITE(reg, val | PIPECONF_ENABLE);
2033 * Until the pipe starts DSL will read as 0, which would cause
2034 * an apparent vblank timestamp jump, which messes up also the
2035 * frame count when it's derived from the timestamps. So let's
2036 * wait for the pipe to start properly before we call
2037 * drm_crtc_vblank_on()
2039 if (dev->max_vblank_count == 0 &&
2040 wait_for(intel_get_crtc_scanline(crtc) != crtc->scanline_offset, 50))
2041 DRM_ERROR("pipe %c didn't start\n", pipe_name(pipe));
2045 * intel_disable_pipe - disable a pipe, asserting requirements
2046 * @crtc: crtc whose pipes is to be disabled
2048 * Disable the pipe of @crtc, making sure that various hardware
2049 * specific requirements are met, if applicable, e.g. plane
2050 * disabled, panel fitter off, etc.
2052 * Will wait until the pipe has shut down before returning.
2054 static void intel_disable_pipe(struct intel_crtc *crtc)
2056 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
2057 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
2058 enum pipe pipe = crtc->pipe;
2062 DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
2065 * Make sure planes won't keep trying to pump pixels to us,
2066 * or we might hang the display.
2068 assert_planes_disabled(dev_priv, pipe);
2069 assert_cursor_disabled(dev_priv, pipe);
2070 assert_sprites_disabled(dev_priv, pipe);
2072 reg = PIPECONF(cpu_transcoder);
2073 val = I915_READ(reg);
2074 if ((val & PIPECONF_ENABLE) == 0)
2078 * Double wide has implications for planes
2079 * so best keep it disabled when not needed.
2081 if (crtc->config->double_wide)
2082 val &= ~PIPECONF_DOUBLE_WIDE;
2084 /* Don't disable pipe or pipe PLLs if needed */
2085 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2086 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
2087 val &= ~PIPECONF_ENABLE;
2089 I915_WRITE(reg, val);
2090 if ((val & PIPECONF_ENABLE) == 0)
2091 intel_wait_for_pipe_off(crtc);
2094 static bool need_vtd_wa(struct drm_device *dev)
2096 #ifdef CONFIG_INTEL_IOMMU
2097 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2103 static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
2105 return IS_GEN2(dev_priv) ? 2048 : 4096;
2108 static unsigned int intel_tile_width_bytes(const struct drm_i915_private *dev_priv,
2109 uint64_t fb_modifier, unsigned int cpp)
2111 switch (fb_modifier) {
2112 case DRM_FORMAT_MOD_NONE:
2114 case I915_FORMAT_MOD_X_TILED:
2115 if (IS_GEN2(dev_priv))
2119 case I915_FORMAT_MOD_Y_TILED:
2120 if (IS_GEN2(dev_priv) || HAS_128_BYTE_Y_TILING(dev_priv))
2124 case I915_FORMAT_MOD_Yf_TILED:
2140 MISSING_CASE(fb_modifier);
2145 unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
2146 uint64_t fb_modifier, unsigned int cpp)
2148 if (fb_modifier == DRM_FORMAT_MOD_NONE)
2151 return intel_tile_size(dev_priv) /
2152 intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
2155 /* Return the tile dimensions in pixel units */
2156 static void intel_tile_dims(const struct drm_i915_private *dev_priv,
2157 unsigned int *tile_width,
2158 unsigned int *tile_height,
2159 uint64_t fb_modifier,
2162 unsigned int tile_width_bytes =
2163 intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
2165 *tile_width = tile_width_bytes / cpp;
2166 *tile_height = intel_tile_size(dev_priv) / tile_width_bytes;
2170 intel_fb_align_height(struct drm_device *dev, unsigned int height,
2171 uint32_t pixel_format, uint64_t fb_modifier)
2173 unsigned int cpp = drm_format_plane_cpp(pixel_format, 0);
2174 unsigned int tile_height = intel_tile_height(to_i915(dev), fb_modifier, cpp);
2176 return ALIGN(height, tile_height);
2179 unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
2181 unsigned int size = 0;
2184 for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
2185 size += rot_info->plane[i].width * rot_info->plane[i].height;
2191 intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
2192 const struct drm_framebuffer *fb,
2193 unsigned int rotation)
2195 if (intel_rotation_90_or_270(rotation)) {
2196 *view = i915_ggtt_view_rotated;
2197 view->params.rotated = to_intel_framebuffer(fb)->rot_info;
2199 *view = i915_ggtt_view_normal;
2204 intel_fill_fb_info(struct drm_i915_private *dev_priv,
2205 struct drm_framebuffer *fb)
2207 struct intel_rotation_info *info = &to_intel_framebuffer(fb)->rot_info;
2208 unsigned int tile_size, tile_width, tile_height, cpp;
2210 tile_size = intel_tile_size(dev_priv);
2212 cpp = drm_format_plane_cpp(fb->pixel_format, 0);
2213 intel_tile_dims(dev_priv, &tile_width, &tile_height,
2214 fb->modifier[0], cpp);
2216 info->plane[0].width = DIV_ROUND_UP(fb->pitches[0], tile_width * cpp);
2217 info->plane[0].height = DIV_ROUND_UP(fb->height, tile_height);
2219 if (info->pixel_format == DRM_FORMAT_NV12) {
2220 cpp = drm_format_plane_cpp(fb->pixel_format, 1);
2221 intel_tile_dims(dev_priv, &tile_width, &tile_height,
2222 fb->modifier[1], cpp);
2224 info->uv_offset = fb->offsets[1];
2225 info->plane[1].width = DIV_ROUND_UP(fb->pitches[1], tile_width * cpp);
2226 info->plane[1].height = DIV_ROUND_UP(fb->height / 2, tile_height);
2230 static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
2232 if (INTEL_INFO(dev_priv)->gen >= 9)
2234 else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
2235 IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
2237 else if (INTEL_INFO(dev_priv)->gen >= 4)
2243 static unsigned int intel_surf_alignment(const struct drm_i915_private *dev_priv,
2244 uint64_t fb_modifier)
2246 switch (fb_modifier) {
2247 case DRM_FORMAT_MOD_NONE:
2248 return intel_linear_alignment(dev_priv);
2249 case I915_FORMAT_MOD_X_TILED:
2250 if (INTEL_INFO(dev_priv)->gen >= 9)
2253 case I915_FORMAT_MOD_Y_TILED:
2254 case I915_FORMAT_MOD_Yf_TILED:
2255 return 1 * 1024 * 1024;
2257 MISSING_CASE(fb_modifier);
2263 intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
2264 unsigned int rotation)
2266 struct drm_device *dev = fb->dev;
2267 struct drm_i915_private *dev_priv = dev->dev_private;
2268 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2269 struct i915_ggtt_view view;
2273 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2275 alignment = intel_surf_alignment(dev_priv, fb->modifier[0]);
2277 intel_fill_fb_ggtt_view(&view, fb, rotation);
2279 /* Note that the w/a also requires 64 PTE of padding following the
2280 * bo. We currently fill all unused PTE with the shadow page and so
2281 * we should always have valid PTE following the scanout preventing
2284 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2285 alignment = 256 * 1024;
2288 * Global gtt pte registers are special registers which actually forward
2289 * writes to a chunk of system memory. Which means that there is no risk
2290 * that the register values disappear as soon as we call
2291 * intel_runtime_pm_put(), so it is correct to wrap only the
2292 * pin/unpin/fence and not more.
2294 intel_runtime_pm_get(dev_priv);
2296 ret = i915_gem_object_pin_to_display_plane(obj, alignment,
2301 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2302 * fence, whereas 965+ only requires a fence if using
2303 * framebuffer compression. For simplicity, we always install
2304 * a fence as the cost is not that onerous.
2306 if (view.type == I915_GGTT_VIEW_NORMAL) {
2307 ret = i915_gem_object_get_fence(obj);
2308 if (ret == -EDEADLK) {
2310 * -EDEADLK means there are no free fences
2313 * This is propagated to atomic, but it uses
2314 * -EDEADLK to force a locking recovery, so
2315 * change the returned error to -EBUSY.
2322 i915_gem_object_pin_fence(obj);
2325 intel_runtime_pm_put(dev_priv);
2329 i915_gem_object_unpin_from_display_plane(obj, &view);
2331 intel_runtime_pm_put(dev_priv);
2335 void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
2337 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2338 struct i915_ggtt_view view;
2340 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2342 intel_fill_fb_ggtt_view(&view, fb, rotation);
2344 if (view.type == I915_GGTT_VIEW_NORMAL)
2345 i915_gem_object_unpin_fence(obj);
2347 i915_gem_object_unpin_from_display_plane(obj, &view);
2351 * Adjust the tile offset by moving the difference into
2354 * Input tile dimensions and pitch must already be
2355 * rotated to match x and y, and in pixel units.
2357 static u32 intel_adjust_tile_offset(int *x, int *y,
2358 unsigned int tile_width,
2359 unsigned int tile_height,
2360 unsigned int tile_size,
2361 unsigned int pitch_tiles,
2367 WARN_ON(old_offset & (tile_size - 1));
2368 WARN_ON(new_offset & (tile_size - 1));
2369 WARN_ON(new_offset > old_offset);
2371 tiles = (old_offset - new_offset) / tile_size;
2373 *y += tiles / pitch_tiles * tile_height;
2374 *x += tiles % pitch_tiles * tile_width;
2380 * Computes the linear offset to the base tile and adjusts
2381 * x, y. bytes per pixel is assumed to be a power-of-two.
2383 * In the 90/270 rotated case, x and y are assumed
2384 * to be already rotated to match the rotated GTT view, and
2385 * pitch is the tile_height aligned framebuffer height.
2387 u32 intel_compute_tile_offset(int *x, int *y,
2388 const struct drm_framebuffer *fb, int plane,
2390 unsigned int rotation)
2392 const struct drm_i915_private *dev_priv = to_i915(fb->dev);
2393 uint64_t fb_modifier = fb->modifier[plane];
2394 unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
2395 u32 offset, offset_aligned, alignment;
2397 alignment = intel_surf_alignment(dev_priv, fb_modifier);
2401 if (fb_modifier != DRM_FORMAT_MOD_NONE) {
2402 unsigned int tile_size, tile_width, tile_height;
2403 unsigned int tile_rows, tiles, pitch_tiles;
2405 tile_size = intel_tile_size(dev_priv);
2406 intel_tile_dims(dev_priv, &tile_width, &tile_height,
2409 if (intel_rotation_90_or_270(rotation)) {
2410 pitch_tiles = pitch / tile_height;
2411 swap(tile_width, tile_height);
2413 pitch_tiles = pitch / (tile_width * cpp);
2416 tile_rows = *y / tile_height;
2419 tiles = *x / tile_width;
2422 offset = (tile_rows * pitch_tiles + tiles) * tile_size;
2423 offset_aligned = offset & ~alignment;
2425 intel_adjust_tile_offset(x, y, tile_width, tile_height,
2426 tile_size, pitch_tiles,
2427 offset, offset_aligned);
2429 offset = *y * pitch + *x * cpp;
2430 offset_aligned = offset & ~alignment;
2432 *y = (offset & alignment) / pitch;
2433 *x = ((offset & alignment) - *y * pitch) / cpp;
2436 return offset_aligned;
2439 static int i9xx_format_to_fourcc(int format)
2442 case DISPPLANE_8BPP:
2443 return DRM_FORMAT_C8;
2444 case DISPPLANE_BGRX555:
2445 return DRM_FORMAT_XRGB1555;
2446 case DISPPLANE_BGRX565:
2447 return DRM_FORMAT_RGB565;
2449 case DISPPLANE_BGRX888:
2450 return DRM_FORMAT_XRGB8888;
2451 case DISPPLANE_RGBX888:
2452 return DRM_FORMAT_XBGR8888;
2453 case DISPPLANE_BGRX101010:
2454 return DRM_FORMAT_XRGB2101010;
2455 case DISPPLANE_RGBX101010:
2456 return DRM_FORMAT_XBGR2101010;
2460 static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2463 case PLANE_CTL_FORMAT_RGB_565:
2464 return DRM_FORMAT_RGB565;
2466 case PLANE_CTL_FORMAT_XRGB_8888:
2469 return DRM_FORMAT_ABGR8888;
2471 return DRM_FORMAT_XBGR8888;
2474 return DRM_FORMAT_ARGB8888;
2476 return DRM_FORMAT_XRGB8888;
2478 case PLANE_CTL_FORMAT_XRGB_2101010:
2480 return DRM_FORMAT_XBGR2101010;
2482 return DRM_FORMAT_XRGB2101010;
2487 intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2488 struct intel_initial_plane_config *plane_config)
2490 struct drm_device *dev = crtc->base.dev;
2491 struct drm_i915_private *dev_priv = to_i915(dev);
2492 struct i915_ggtt *ggtt = &dev_priv->ggtt;
2493 struct drm_i915_gem_object *obj = NULL;
2494 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2495 struct drm_framebuffer *fb = &plane_config->fb->base;
2496 u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2497 u32 size_aligned = round_up(plane_config->base + plane_config->size,
2500 size_aligned -= base_aligned;
2502 if (plane_config->size == 0)
2505 /* If the FB is too big, just don't use it since fbdev is not very
2506 * important and we should probably use that space with FBC or other
2508 if (size_aligned * 2 > ggtt->stolen_usable_size)
2511 mutex_lock(&dev->struct_mutex);
2513 obj = i915_gem_object_create_stolen_for_preallocated(dev,
2518 mutex_unlock(&dev->struct_mutex);
2522 obj->tiling_mode = plane_config->tiling;
2523 if (obj->tiling_mode == I915_TILING_X)
2524 obj->stride = fb->pitches[0];
2526 mode_cmd.pixel_format = fb->pixel_format;
2527 mode_cmd.width = fb->width;
2528 mode_cmd.height = fb->height;
2529 mode_cmd.pitches[0] = fb->pitches[0];
2530 mode_cmd.modifier[0] = fb->modifier[0];
2531 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2533 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
2535 DRM_DEBUG_KMS("intel fb init failed\n");
2539 mutex_unlock(&dev->struct_mutex);
2541 DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
2545 drm_gem_object_unreference(&obj->base);
2546 mutex_unlock(&dev->struct_mutex);
2550 /* Update plane->state->fb to match plane->fb after driver-internal updates */
2552 update_state_fb(struct drm_plane *plane)
2554 if (plane->fb == plane->state->fb)
2557 if (plane->state->fb)
2558 drm_framebuffer_unreference(plane->state->fb);
2559 plane->state->fb = plane->fb;
2560 if (plane->state->fb)
2561 drm_framebuffer_reference(plane->state->fb);
2565 intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2566 struct intel_initial_plane_config *plane_config)
2568 struct drm_device *dev = intel_crtc->base.dev;
2569 struct drm_i915_private *dev_priv = dev->dev_private;
2571 struct intel_crtc *i;
2572 struct drm_i915_gem_object *obj;
2573 struct drm_plane *primary = intel_crtc->base.primary;
2574 struct drm_plane_state *plane_state = primary->state;
2575 struct drm_crtc_state *crtc_state = intel_crtc->base.state;
2576 struct intel_plane *intel_plane = to_intel_plane(primary);
2577 struct intel_plane_state *intel_state =
2578 to_intel_plane_state(plane_state);
2579 struct drm_framebuffer *fb;
2581 if (!plane_config->fb)
2584 if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
2585 fb = &plane_config->fb->base;
2589 kfree(plane_config->fb);
2592 * Failed to alloc the obj, check to see if we should share
2593 * an fb with another CRTC instead
2595 for_each_crtc(dev, c) {
2596 i = to_intel_crtc(c);
2598 if (c == &intel_crtc->base)
2604 fb = c->primary->fb;
2608 obj = intel_fb_obj(fb);
2609 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
2610 drm_framebuffer_reference(fb);
2616 * We've failed to reconstruct the BIOS FB. Current display state
2617 * indicates that the primary plane is visible, but has a NULL FB,
2618 * which will lead to problems later if we don't fix it up. The
2619 * simplest solution is to just disable the primary plane now and
2620 * pretend the BIOS never had it enabled.
2622 to_intel_plane_state(plane_state)->visible = false;
2623 crtc_state->plane_mask &= ~(1 << drm_plane_index(primary));
2624 intel_pre_disable_primary_noatomic(&intel_crtc->base);
2625 intel_plane->disable_plane(primary, &intel_crtc->base);
2630 plane_state->src_x = 0;
2631 plane_state->src_y = 0;
2632 plane_state->src_w = fb->width << 16;
2633 plane_state->src_h = fb->height << 16;
2635 plane_state->crtc_x = 0;
2636 plane_state->crtc_y = 0;
2637 plane_state->crtc_w = fb->width;
2638 plane_state->crtc_h = fb->height;
2640 intel_state->src.x1 = plane_state->src_x;
2641 intel_state->src.y1 = plane_state->src_y;
2642 intel_state->src.x2 = plane_state->src_x + plane_state->src_w;
2643 intel_state->src.y2 = plane_state->src_y + plane_state->src_h;
2644 intel_state->dst.x1 = plane_state->crtc_x;
2645 intel_state->dst.y1 = plane_state->crtc_y;
2646 intel_state->dst.x2 = plane_state->crtc_x + plane_state->crtc_w;
2647 intel_state->dst.y2 = plane_state->crtc_y + plane_state->crtc_h;
2649 obj = intel_fb_obj(fb);
2650 if (obj->tiling_mode != I915_TILING_NONE)
2651 dev_priv->preserve_bios_swizzle = true;
2653 drm_framebuffer_reference(fb);
2654 primary->fb = primary->state->fb = fb;
2655 primary->crtc = primary->state->crtc = &intel_crtc->base;
2656 intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
2657 obj->frontbuffer_bits |= to_intel_plane(primary)->frontbuffer_bit;
2660 static void i9xx_update_primary_plane(struct drm_plane *primary,
2661 const struct intel_crtc_state *crtc_state,
2662 const struct intel_plane_state *plane_state)
2664 struct drm_device *dev = primary->dev;
2665 struct drm_i915_private *dev_priv = dev->dev_private;
2666 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
2667 struct drm_framebuffer *fb = plane_state->base.fb;
2668 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2669 int plane = intel_crtc->plane;
2672 i915_reg_t reg = DSPCNTR(plane);
2673 unsigned int rotation = plane_state->base.rotation;
2674 int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
2675 int x = plane_state->src.x1 >> 16;
2676 int y = plane_state->src.y1 >> 16;
2678 dspcntr = DISPPLANE_GAMMA_ENABLE;
2680 dspcntr |= DISPLAY_PLANE_ENABLE;
2682 if (INTEL_INFO(dev)->gen < 4) {
2683 if (intel_crtc->pipe == PIPE_B)
2684 dspcntr |= DISPPLANE_SEL_PIPE_B;
2686 /* pipesrc and dspsize control the size that is scaled from,
2687 * which should always be the user's requested size.
2689 I915_WRITE(DSPSIZE(plane),
2690 ((crtc_state->pipe_src_h - 1) << 16) |
2691 (crtc_state->pipe_src_w - 1));
2692 I915_WRITE(DSPPOS(plane), 0);
2693 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2694 I915_WRITE(PRIMSIZE(plane),
2695 ((crtc_state->pipe_src_h - 1) << 16) |
2696 (crtc_state->pipe_src_w - 1));
2697 I915_WRITE(PRIMPOS(plane), 0);
2698 I915_WRITE(PRIMCNSTALPHA(plane), 0);
2701 switch (fb->pixel_format) {
2703 dspcntr |= DISPPLANE_8BPP;
2705 case DRM_FORMAT_XRGB1555:
2706 dspcntr |= DISPPLANE_BGRX555;
2708 case DRM_FORMAT_RGB565:
2709 dspcntr |= DISPPLANE_BGRX565;
2711 case DRM_FORMAT_XRGB8888:
2712 dspcntr |= DISPPLANE_BGRX888;
2714 case DRM_FORMAT_XBGR8888:
2715 dspcntr |= DISPPLANE_RGBX888;
2717 case DRM_FORMAT_XRGB2101010:
2718 dspcntr |= DISPPLANE_BGRX101010;
2720 case DRM_FORMAT_XBGR2101010:
2721 dspcntr |= DISPPLANE_RGBX101010;
2727 if (INTEL_INFO(dev)->gen >= 4 &&
2728 obj->tiling_mode != I915_TILING_NONE)
2729 dspcntr |= DISPPLANE_TILED;
2732 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2734 linear_offset = y * fb->pitches[0] + x * cpp;
2736 if (INTEL_INFO(dev)->gen >= 4) {
2737 intel_crtc->dspaddr_offset =
2738 intel_compute_tile_offset(&x, &y, fb, 0,
2739 fb->pitches[0], rotation);
2740 linear_offset -= intel_crtc->dspaddr_offset;
2742 intel_crtc->dspaddr_offset = linear_offset;
2745 if (rotation == BIT(DRM_ROTATE_180)) {
2746 dspcntr |= DISPPLANE_ROTATE_180;
2748 x += (crtc_state->pipe_src_w - 1);
2749 y += (crtc_state->pipe_src_h - 1);
2751 /* Finding the last pixel of the last line of the display
2752 data and adding to linear_offset*/
2754 (crtc_state->pipe_src_h - 1) * fb->pitches[0] +
2755 (crtc_state->pipe_src_w - 1) * cpp;
2758 intel_crtc->adjusted_x = x;
2759 intel_crtc->adjusted_y = y;
2761 I915_WRITE(reg, dspcntr);
2763 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2764 if (INTEL_INFO(dev)->gen >= 4) {
2765 I915_WRITE(DSPSURF(plane),
2766 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2767 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2768 I915_WRITE(DSPLINOFF(plane), linear_offset);
2770 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
2774 static void i9xx_disable_primary_plane(struct drm_plane *primary,
2775 struct drm_crtc *crtc)
2777 struct drm_device *dev = crtc->dev;
2778 struct drm_i915_private *dev_priv = dev->dev_private;
2779 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2780 int plane = intel_crtc->plane;
2782 I915_WRITE(DSPCNTR(plane), 0);
2783 if (INTEL_INFO(dev_priv)->gen >= 4)
2784 I915_WRITE(DSPSURF(plane), 0);
2786 I915_WRITE(DSPADDR(plane), 0);
2787 POSTING_READ(DSPCNTR(plane));
2790 static void ironlake_update_primary_plane(struct drm_plane *primary,
2791 const struct intel_crtc_state *crtc_state,
2792 const struct intel_plane_state *plane_state)
2794 struct drm_device *dev = primary->dev;
2795 struct drm_i915_private *dev_priv = dev->dev_private;
2796 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
2797 struct drm_framebuffer *fb = plane_state->base.fb;
2798 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2799 int plane = intel_crtc->plane;
2802 i915_reg_t reg = DSPCNTR(plane);
2803 unsigned int rotation = plane_state->base.rotation;
2804 int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
2805 int x = plane_state->src.x1 >> 16;
2806 int y = plane_state->src.y1 >> 16;
2808 dspcntr = DISPPLANE_GAMMA_ENABLE;
2809 dspcntr |= DISPLAY_PLANE_ENABLE;
2811 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2812 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
2814 switch (fb->pixel_format) {
2816 dspcntr |= DISPPLANE_8BPP;
2818 case DRM_FORMAT_RGB565:
2819 dspcntr |= DISPPLANE_BGRX565;
2821 case DRM_FORMAT_XRGB8888:
2822 dspcntr |= DISPPLANE_BGRX888;
2824 case DRM_FORMAT_XBGR8888:
2825 dspcntr |= DISPPLANE_RGBX888;
2827 case DRM_FORMAT_XRGB2101010:
2828 dspcntr |= DISPPLANE_BGRX101010;
2830 case DRM_FORMAT_XBGR2101010:
2831 dspcntr |= DISPPLANE_RGBX101010;
2837 if (obj->tiling_mode != I915_TILING_NONE)
2838 dspcntr |= DISPPLANE_TILED;
2840 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
2841 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2843 linear_offset = y * fb->pitches[0] + x * cpp;
2844 intel_crtc->dspaddr_offset =
2845 intel_compute_tile_offset(&x, &y, fb, 0,
2846 fb->pitches[0], rotation);
2847 linear_offset -= intel_crtc->dspaddr_offset;
2848 if (rotation == BIT(DRM_ROTATE_180)) {
2849 dspcntr |= DISPPLANE_ROTATE_180;
2851 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
2852 x += (crtc_state->pipe_src_w - 1);
2853 y += (crtc_state->pipe_src_h - 1);
2855 /* Finding the last pixel of the last line of the display
2856 data and adding to linear_offset*/
2858 (crtc_state->pipe_src_h - 1) * fb->pitches[0] +
2859 (crtc_state->pipe_src_w - 1) * cpp;
2863 intel_crtc->adjusted_x = x;
2864 intel_crtc->adjusted_y = y;
2866 I915_WRITE(reg, dspcntr);
2868 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2869 I915_WRITE(DSPSURF(plane),
2870 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2871 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2872 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2874 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2875 I915_WRITE(DSPLINOFF(plane), linear_offset);
2880 u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
2881 uint64_t fb_modifier, uint32_t pixel_format)
2883 if (fb_modifier == DRM_FORMAT_MOD_NONE) {
2886 int cpp = drm_format_plane_cpp(pixel_format, 0);
2888 return intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
2892 u32 intel_plane_obj_offset(struct intel_plane *intel_plane,
2893 struct drm_i915_gem_object *obj,
2896 struct i915_ggtt_view view;
2897 struct i915_vma *vma;
2900 intel_fill_fb_ggtt_view(&view, intel_plane->base.state->fb,
2901 intel_plane->base.state->rotation);
2903 vma = i915_gem_obj_to_ggtt_view(obj, &view);
2904 if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n",
2908 offset = vma->node.start;
2911 offset += vma->ggtt_view.params.rotated.uv_start_page *
2915 WARN_ON(upper_32_bits(offset));
2917 return lower_32_bits(offset);
2920 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
2922 struct drm_device *dev = intel_crtc->base.dev;
2923 struct drm_i915_private *dev_priv = dev->dev_private;
2925 I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
2926 I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
2927 I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
2931 * This function detaches (aka. unbinds) unused scalers in hardware
2933 static void skl_detach_scalers(struct intel_crtc *intel_crtc)
2935 struct intel_crtc_scaler_state *scaler_state;
2938 scaler_state = &intel_crtc->config->scaler_state;
2940 /* loop through and disable scalers that aren't in use */
2941 for (i = 0; i < intel_crtc->num_scalers; i++) {
2942 if (!scaler_state->scalers[i].in_use)
2943 skl_detach_scaler(intel_crtc, i);
2947 u32 skl_plane_ctl_format(uint32_t pixel_format)
2949 switch (pixel_format) {
2951 return PLANE_CTL_FORMAT_INDEXED;
2952 case DRM_FORMAT_RGB565:
2953 return PLANE_CTL_FORMAT_RGB_565;
2954 case DRM_FORMAT_XBGR8888:
2955 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
2956 case DRM_FORMAT_XRGB8888:
2957 return PLANE_CTL_FORMAT_XRGB_8888;
2959 * XXX: For ARBG/ABGR formats we default to expecting scanout buffers
2960 * to be already pre-multiplied. We need to add a knob (or a different
2961 * DRM_FORMAT) for user-space to configure that.
2963 case DRM_FORMAT_ABGR8888:
2964 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
2965 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2966 case DRM_FORMAT_ARGB8888:
2967 return PLANE_CTL_FORMAT_XRGB_8888 |
2968 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2969 case DRM_FORMAT_XRGB2101010:
2970 return PLANE_CTL_FORMAT_XRGB_2101010;
2971 case DRM_FORMAT_XBGR2101010:
2972 return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
2973 case DRM_FORMAT_YUYV:
2974 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
2975 case DRM_FORMAT_YVYU:
2976 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
2977 case DRM_FORMAT_UYVY:
2978 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
2979 case DRM_FORMAT_VYUY:
2980 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
2982 MISSING_CASE(pixel_format);
2988 u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
2990 switch (fb_modifier) {
2991 case DRM_FORMAT_MOD_NONE:
2993 case I915_FORMAT_MOD_X_TILED:
2994 return PLANE_CTL_TILED_X;
2995 case I915_FORMAT_MOD_Y_TILED:
2996 return PLANE_CTL_TILED_Y;
2997 case I915_FORMAT_MOD_Yf_TILED:
2998 return PLANE_CTL_TILED_YF;
3000 MISSING_CASE(fb_modifier);
3006 u32 skl_plane_ctl_rotation(unsigned int rotation)
3009 case BIT(DRM_ROTATE_0):
3012 * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
3013 * while i915 HW rotation is clockwise, thats why this swapping.
3015 case BIT(DRM_ROTATE_90):
3016 return PLANE_CTL_ROTATE_270;
3017 case BIT(DRM_ROTATE_180):
3018 return PLANE_CTL_ROTATE_180;
3019 case BIT(DRM_ROTATE_270):
3020 return PLANE_CTL_ROTATE_90;
3022 MISSING_CASE(rotation);
3028 static void skylake_update_primary_plane(struct drm_plane *plane,
3029 const struct intel_crtc_state *crtc_state,
3030 const struct intel_plane_state *plane_state)
3032 struct drm_device *dev = plane->dev;
3033 struct drm_i915_private *dev_priv = dev->dev_private;
3034 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
3035 struct drm_framebuffer *fb = plane_state->base.fb;
3036 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
3037 int pipe = intel_crtc->pipe;
3038 u32 plane_ctl, stride_div, stride;
3039 u32 tile_height, plane_offset, plane_size;
3040 unsigned int rotation = plane_state->base.rotation;
3041 int x_offset, y_offset;
3043 int scaler_id = plane_state->scaler_id;
3044 int src_x = plane_state->src.x1 >> 16;
3045 int src_y = plane_state->src.y1 >> 16;
3046 int src_w = drm_rect_width(&plane_state->src) >> 16;
3047 int src_h = drm_rect_height(&plane_state->src) >> 16;
3048 int dst_x = plane_state->dst.x1;
3049 int dst_y = plane_state->dst.y1;
3050 int dst_w = drm_rect_width(&plane_state->dst);
3051 int dst_h = drm_rect_height(&plane_state->dst);
3053 plane_ctl = PLANE_CTL_ENABLE |
3054 PLANE_CTL_PIPE_GAMMA_ENABLE |
3055 PLANE_CTL_PIPE_CSC_ENABLE;
3057 plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
3058 plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
3059 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3060 plane_ctl |= skl_plane_ctl_rotation(rotation);
3062 stride_div = intel_fb_stride_alignment(dev_priv, fb->modifier[0],
3064 surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj, 0);
3066 WARN_ON(drm_rect_width(&plane_state->src) == 0);
3068 if (intel_rotation_90_or_270(rotation)) {
3069 int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
3071 /* stride = Surface height in tiles */
3072 tile_height = intel_tile_height(dev_priv, fb->modifier[0], cpp);
3073 stride = DIV_ROUND_UP(fb->height, tile_height);
3074 x_offset = stride * tile_height - src_y - src_h;
3076 plane_size = (src_w - 1) << 16 | (src_h - 1);
3078 stride = fb->pitches[0] / stride_div;
3081 plane_size = (src_h - 1) << 16 | (src_w - 1);
3083 plane_offset = y_offset << 16 | x_offset;
3085 intel_crtc->adjusted_x = x_offset;
3086 intel_crtc->adjusted_y = y_offset;
3088 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
3089 I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
3090 I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
3091 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
3093 if (scaler_id >= 0) {
3094 uint32_t ps_ctrl = 0;
3096 WARN_ON(!dst_w || !dst_h);
3097 ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
3098 crtc_state->scaler_state.scalers[scaler_id].mode;
3099 I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
3100 I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
3101 I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
3102 I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
3103 I915_WRITE(PLANE_POS(pipe, 0), 0);
3105 I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
3108 I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
3110 POSTING_READ(PLANE_SURF(pipe, 0));
3113 static void skylake_disable_primary_plane(struct drm_plane *primary,
3114 struct drm_crtc *crtc)
3116 struct drm_device *dev = crtc->dev;
3117 struct drm_i915_private *dev_priv = dev->dev_private;
3118 int pipe = to_intel_crtc(crtc)->pipe;
3120 I915_WRITE(PLANE_CTL(pipe, 0), 0);
3121 I915_WRITE(PLANE_SURF(pipe, 0), 0);
3122 POSTING_READ(PLANE_SURF(pipe, 0));
3125 /* Assume fb object is pinned & idle & fenced and just update base pointers */
3127 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
3128 int x, int y, enum mode_set_atomic state)
3130 /* Support for kgdboc is disabled, this needs a major rework. */
3131 DRM_ERROR("legacy panic handler not supported any more.\n");
3136 static void intel_complete_page_flips(struct drm_i915_private *dev_priv)
3138 struct intel_crtc *crtc;
3140 for_each_intel_crtc(dev_priv->dev, crtc)
3141 intel_finish_page_flip_cs(dev_priv, crtc->pipe);
3144 static void intel_update_primary_planes(struct drm_device *dev)
3146 struct drm_crtc *crtc;
3148 for_each_crtc(dev, crtc) {
3149 struct intel_plane *plane = to_intel_plane(crtc->primary);
3150 struct intel_plane_state *plane_state;
3152 drm_modeset_lock_crtc(crtc, &plane->base);
3153 plane_state = to_intel_plane_state(plane->base.state);
3155 if (plane_state->visible)
3156 plane->update_plane(&plane->base,
3157 to_intel_crtc_state(crtc->state),
3160 drm_modeset_unlock_crtc(crtc);
3164 void intel_prepare_reset(struct drm_i915_private *dev_priv)
3166 /* no reset support for gen2 */
3167 if (IS_GEN2(dev_priv))
3170 /* reset doesn't touch the display */
3171 if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
3174 drm_modeset_lock_all(dev_priv->dev);
3176 * Disabling the crtcs gracefully seems nicer. Also the
3177 * g33 docs say we should at least disable all the planes.
3179 intel_display_suspend(dev_priv->dev);
3182 void intel_finish_reset(struct drm_i915_private *dev_priv)
3185 * Flips in the rings will be nuked by the reset,
3186 * so complete all pending flips so that user space
3187 * will get its events and not get stuck.
3189 intel_complete_page_flips(dev_priv);
3191 /* no reset support for gen2 */
3192 if (IS_GEN2(dev_priv))
3195 /* reset doesn't touch the display */
3196 if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) {
3198 * Flips in the rings have been nuked by the reset,
3199 * so update the base address of all primary
3200 * planes to the the last fb to make sure we're
3201 * showing the correct fb after a reset.
3203 * FIXME: Atomic will make this obsolete since we won't schedule
3204 * CS-based flips (which might get lost in gpu resets) any more.
3206 intel_update_primary_planes(dev_priv->dev);
3211 * The display has been reset as well,
3212 * so need a full re-initialization.
3214 intel_runtime_pm_disable_interrupts(dev_priv);
3215 intel_runtime_pm_enable_interrupts(dev_priv);
3217 intel_modeset_init_hw(dev_priv->dev);
3219 spin_lock_irq(&dev_priv->irq_lock);
3220 if (dev_priv->display.hpd_irq_setup)
3221 dev_priv->display.hpd_irq_setup(dev_priv);
3222 spin_unlock_irq(&dev_priv->irq_lock);
3224 intel_display_resume(dev_priv->dev);
3226 intel_hpd_init(dev_priv);
3228 drm_modeset_unlock_all(dev_priv->dev);
3231 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3233 struct drm_device *dev = crtc->dev;
3234 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3235 unsigned reset_counter;
3238 reset_counter = i915_reset_counter(&to_i915(dev)->gpu_error);
3239 if (intel_crtc->reset_counter != reset_counter)
3242 spin_lock_irq(&dev->event_lock);
3243 pending = to_intel_crtc(crtc)->flip_work != NULL;
3244 spin_unlock_irq(&dev->event_lock);
3249 static void intel_update_pipe_config(struct intel_crtc *crtc,
3250 struct intel_crtc_state *old_crtc_state)
3252 struct drm_device *dev = crtc->base.dev;
3253 struct drm_i915_private *dev_priv = dev->dev_private;
3254 struct intel_crtc_state *pipe_config =
3255 to_intel_crtc_state(crtc->base.state);
3257 /* drm_atomic_helper_update_legacy_modeset_state might not be called. */
3258 crtc->base.mode = crtc->base.state->mode;
3260 DRM_DEBUG_KMS("Updating pipe size %ix%i -> %ix%i\n",
3261 old_crtc_state->pipe_src_w, old_crtc_state->pipe_src_h,
3262 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
3265 * Update pipe size and adjust fitter if needed: the reason for this is
3266 * that in compute_mode_changes we check the native mode (not the pfit
3267 * mode) to see if we can flip rather than do a full mode set. In the
3268 * fastboot case, we'll flip, but if we don't update the pipesrc and
3269 * pfit state, we'll end up with a big fb scanned out into the wrong
3273 I915_WRITE(PIPESRC(crtc->pipe),
3274 ((pipe_config->pipe_src_w - 1) << 16) |
3275 (pipe_config->pipe_src_h - 1));
3277 /* on skylake this is done by detaching scalers */
3278 if (INTEL_INFO(dev)->gen >= 9) {
3279 skl_detach_scalers(crtc);
3281 if (pipe_config->pch_pfit.enabled)
3282 skylake_pfit_enable(crtc);
3283 } else if (HAS_PCH_SPLIT(dev)) {
3284 if (pipe_config->pch_pfit.enabled)
3285 ironlake_pfit_enable(crtc);
3286 else if (old_crtc_state->pch_pfit.enabled)
3287 ironlake_pfit_disable(crtc, true);
3291 static void intel_fdi_normal_train(struct drm_crtc *crtc)
3293 struct drm_device *dev = crtc->dev;
3294 struct drm_i915_private *dev_priv = dev->dev_private;
3295 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3296 int pipe = intel_crtc->pipe;
3300 /* enable normal train */
3301 reg = FDI_TX_CTL(pipe);
3302 temp = I915_READ(reg);
3303 if (IS_IVYBRIDGE(dev)) {
3304 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3305 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
3307 temp &= ~FDI_LINK_TRAIN_NONE;
3308 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
3310 I915_WRITE(reg, temp);
3312 reg = FDI_RX_CTL(pipe);
3313 temp = I915_READ(reg);
3314 if (HAS_PCH_CPT(dev)) {
3315 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3316 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3318 temp &= ~FDI_LINK_TRAIN_NONE;
3319 temp |= FDI_LINK_TRAIN_NONE;
3321 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3323 /* wait one idle pattern time */
3327 /* IVB wants error correction enabled */
3328 if (IS_IVYBRIDGE(dev))
3329 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3330 FDI_FE_ERRC_ENABLE);
3333 /* The FDI link training functions for ILK/Ibexpeak. */
3334 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3336 struct drm_device *dev = crtc->dev;
3337 struct drm_i915_private *dev_priv = dev->dev_private;
3338 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3339 int pipe = intel_crtc->pipe;
3343 /* FDI needs bits from pipe first */
3344 assert_pipe_enabled(dev_priv, pipe);
3346 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3348 reg = FDI_RX_IMR(pipe);
3349 temp = I915_READ(reg);
3350 temp &= ~FDI_RX_SYMBOL_LOCK;
3351 temp &= ~FDI_RX_BIT_LOCK;
3352 I915_WRITE(reg, temp);
3356 /* enable CPU FDI TX and PCH FDI RX */
3357 reg = FDI_TX_CTL(pipe);
3358 temp = I915_READ(reg);
3359 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3360 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3361 temp &= ~FDI_LINK_TRAIN_NONE;
3362 temp |= FDI_LINK_TRAIN_PATTERN_1;
3363 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3365 reg = FDI_RX_CTL(pipe);
3366 temp = I915_READ(reg);
3367 temp &= ~FDI_LINK_TRAIN_NONE;
3368 temp |= FDI_LINK_TRAIN_PATTERN_1;
3369 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3374 /* Ironlake workaround, enable clock pointer after FDI enable*/
3375 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3376 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3377 FDI_RX_PHASE_SYNC_POINTER_EN);
3379 reg = FDI_RX_IIR(pipe);
3380 for (tries = 0; tries < 5; tries++) {
3381 temp = I915_READ(reg);
3382 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3384 if ((temp & FDI_RX_BIT_LOCK)) {
3385 DRM_DEBUG_KMS("FDI train 1 done.\n");
3386 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3391 DRM_ERROR("FDI train 1 fail!\n");
3394 reg = FDI_TX_CTL(pipe);
3395 temp = I915_READ(reg);
3396 temp &= ~FDI_LINK_TRAIN_NONE;
3397 temp |= FDI_LINK_TRAIN_PATTERN_2;
3398 I915_WRITE(reg, temp);
3400 reg = FDI_RX_CTL(pipe);
3401 temp = I915_READ(reg);
3402 temp &= ~FDI_LINK_TRAIN_NONE;
3403 temp |= FDI_LINK_TRAIN_PATTERN_2;
3404 I915_WRITE(reg, temp);
3409 reg = FDI_RX_IIR(pipe);
3410 for (tries = 0; tries < 5; tries++) {
3411 temp = I915_READ(reg);
3412 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3414 if (temp & FDI_RX_SYMBOL_LOCK) {
3415 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3416 DRM_DEBUG_KMS("FDI train 2 done.\n");
3421 DRM_ERROR("FDI train 2 fail!\n");
3423 DRM_DEBUG_KMS("FDI train done\n");
3427 static const int snb_b_fdi_train_param[] = {
3428 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3429 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3430 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3431 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3434 /* The FDI link training functions for SNB/Cougarpoint. */
3435 static void gen6_fdi_link_train(struct drm_crtc *crtc)
3437 struct drm_device *dev = crtc->dev;
3438 struct drm_i915_private *dev_priv = dev->dev_private;
3439 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3440 int pipe = intel_crtc->pipe;
3444 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3446 reg = FDI_RX_IMR(pipe);
3447 temp = I915_READ(reg);
3448 temp &= ~FDI_RX_SYMBOL_LOCK;
3449 temp &= ~FDI_RX_BIT_LOCK;
3450 I915_WRITE(reg, temp);
3455 /* enable CPU FDI TX and PCH FDI RX */
3456 reg = FDI_TX_CTL(pipe);
3457 temp = I915_READ(reg);
3458 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3459 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3460 temp &= ~FDI_LINK_TRAIN_NONE;
3461 temp |= FDI_LINK_TRAIN_PATTERN_1;
3462 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3464 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3465 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3467 I915_WRITE(FDI_RX_MISC(pipe),
3468 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3470 reg = FDI_RX_CTL(pipe);
3471 temp = I915_READ(reg);
3472 if (HAS_PCH_CPT(dev)) {
3473 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3474 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3476 temp &= ~FDI_LINK_TRAIN_NONE;
3477 temp |= FDI_LINK_TRAIN_PATTERN_1;
3479 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3484 for (i = 0; i < 4; i++) {
3485 reg = FDI_TX_CTL(pipe);
3486 temp = I915_READ(reg);
3487 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3488 temp |= snb_b_fdi_train_param[i];
3489 I915_WRITE(reg, temp);
3494 for (retry = 0; retry < 5; retry++) {
3495 reg = FDI_RX_IIR(pipe);
3496 temp = I915_READ(reg);
3497 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3498 if (temp & FDI_RX_BIT_LOCK) {
3499 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3500 DRM_DEBUG_KMS("FDI train 1 done.\n");
3509 DRM_ERROR("FDI train 1 fail!\n");
3512 reg = FDI_TX_CTL(pipe);
3513 temp = I915_READ(reg);
3514 temp &= ~FDI_LINK_TRAIN_NONE;
3515 temp |= FDI_LINK_TRAIN_PATTERN_2;
3517 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3519 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3521 I915_WRITE(reg, temp);
3523 reg = FDI_RX_CTL(pipe);
3524 temp = I915_READ(reg);
3525 if (HAS_PCH_CPT(dev)) {
3526 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3527 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3529 temp &= ~FDI_LINK_TRAIN_NONE;
3530 temp |= FDI_LINK_TRAIN_PATTERN_2;
3532 I915_WRITE(reg, temp);
3537 for (i = 0; i < 4; i++) {
3538 reg = FDI_TX_CTL(pipe);
3539 temp = I915_READ(reg);
3540 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3541 temp |= snb_b_fdi_train_param[i];
3542 I915_WRITE(reg, temp);
3547 for (retry = 0; retry < 5; retry++) {
3548 reg = FDI_RX_IIR(pipe);
3549 temp = I915_READ(reg);
3550 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3551 if (temp & FDI_RX_SYMBOL_LOCK) {
3552 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3553 DRM_DEBUG_KMS("FDI train 2 done.\n");
3562 DRM_ERROR("FDI train 2 fail!\n");
3564 DRM_DEBUG_KMS("FDI train done.\n");
3567 /* Manual link training for Ivy Bridge A0 parts */
3568 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3570 struct drm_device *dev = crtc->dev;
3571 struct drm_i915_private *dev_priv = dev->dev_private;
3572 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3573 int pipe = intel_crtc->pipe;
3577 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3579 reg = FDI_RX_IMR(pipe);
3580 temp = I915_READ(reg);
3581 temp &= ~FDI_RX_SYMBOL_LOCK;
3582 temp &= ~FDI_RX_BIT_LOCK;
3583 I915_WRITE(reg, temp);
3588 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3589 I915_READ(FDI_RX_IIR(pipe)));
3591 /* Try each vswing and preemphasis setting twice before moving on */
3592 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3593 /* disable first in case we need to retry */
3594 reg = FDI_TX_CTL(pipe);
3595 temp = I915_READ(reg);
3596 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3597 temp &= ~FDI_TX_ENABLE;
3598 I915_WRITE(reg, temp);
3600 reg = FDI_RX_CTL(pipe);
3601 temp = I915_READ(reg);
3602 temp &= ~FDI_LINK_TRAIN_AUTO;
3603 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3604 temp &= ~FDI_RX_ENABLE;
3605 I915_WRITE(reg, temp);
3607 /* enable CPU FDI TX and PCH FDI RX */
3608 reg = FDI_TX_CTL(pipe);
3609 temp = I915_READ(reg);
3610 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3611 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3612 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
3613 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3614 temp |= snb_b_fdi_train_param[j/2];
3615 temp |= FDI_COMPOSITE_SYNC;
3616 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3618 I915_WRITE(FDI_RX_MISC(pipe),
3619 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3621 reg = FDI_RX_CTL(pipe);
3622 temp = I915_READ(reg);
3623 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3624 temp |= FDI_COMPOSITE_SYNC;
3625 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3628 udelay(1); /* should be 0.5us */
3630 for (i = 0; i < 4; i++) {
3631 reg = FDI_RX_IIR(pipe);
3632 temp = I915_READ(reg);
3633 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3635 if (temp & FDI_RX_BIT_LOCK ||
3636 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3637 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3638 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3642 udelay(1); /* should be 0.5us */
3645 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3650 reg = FDI_TX_CTL(pipe);
3651 temp = I915_READ(reg);
3652 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3653 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3654 I915_WRITE(reg, temp);
3656 reg = FDI_RX_CTL(pipe);
3657 temp = I915_READ(reg);
3658 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3659 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3660 I915_WRITE(reg, temp);
3663 udelay(2); /* should be 1.5us */
3665 for (i = 0; i < 4; i++) {
3666 reg = FDI_RX_IIR(pipe);
3667 temp = I915_READ(reg);
3668 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3670 if (temp & FDI_RX_SYMBOL_LOCK ||
3671 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3672 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3673 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3677 udelay(2); /* should be 1.5us */
3680 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
3684 DRM_DEBUG_KMS("FDI train done.\n");
3687 static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
3689 struct drm_device *dev = intel_crtc->base.dev;
3690 struct drm_i915_private *dev_priv = dev->dev_private;
3691 int pipe = intel_crtc->pipe;
3695 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
3696 reg = FDI_RX_CTL(pipe);
3697 temp = I915_READ(reg);
3698 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
3699 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3700 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3701 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3706 /* Switch from Rawclk to PCDclk */
3707 temp = I915_READ(reg);
3708 I915_WRITE(reg, temp | FDI_PCDCLK);
3713 /* Enable CPU FDI TX PLL, always on for Ironlake */
3714 reg = FDI_TX_CTL(pipe);
3715 temp = I915_READ(reg);
3716 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3717 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
3724 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3726 struct drm_device *dev = intel_crtc->base.dev;
3727 struct drm_i915_private *dev_priv = dev->dev_private;
3728 int pipe = intel_crtc->pipe;
3732 /* Switch from PCDclk to Rawclk */
3733 reg = FDI_RX_CTL(pipe);
3734 temp = I915_READ(reg);
3735 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3737 /* Disable CPU FDI TX PLL */
3738 reg = FDI_TX_CTL(pipe);
3739 temp = I915_READ(reg);
3740 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3745 reg = FDI_RX_CTL(pipe);
3746 temp = I915_READ(reg);
3747 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3749 /* Wait for the clocks to turn off. */
3754 static void ironlake_fdi_disable(struct drm_crtc *crtc)
3756 struct drm_device *dev = crtc->dev;
3757 struct drm_i915_private *dev_priv = dev->dev_private;
3758 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3759 int pipe = intel_crtc->pipe;
3763 /* disable CPU FDI tx and PCH FDI rx */
3764 reg = FDI_TX_CTL(pipe);
3765 temp = I915_READ(reg);
3766 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3769 reg = FDI_RX_CTL(pipe);
3770 temp = I915_READ(reg);
3771 temp &= ~(0x7 << 16);
3772 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3773 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3778 /* Ironlake workaround, disable clock pointer after downing FDI */
3779 if (HAS_PCH_IBX(dev))
3780 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3782 /* still set train pattern 1 */
3783 reg = FDI_TX_CTL(pipe);
3784 temp = I915_READ(reg);
3785 temp &= ~FDI_LINK_TRAIN_NONE;
3786 temp |= FDI_LINK_TRAIN_PATTERN_1;
3787 I915_WRITE(reg, temp);
3789 reg = FDI_RX_CTL(pipe);
3790 temp = I915_READ(reg);
3791 if (HAS_PCH_CPT(dev)) {
3792 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3793 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3795 temp &= ~FDI_LINK_TRAIN_NONE;
3796 temp |= FDI_LINK_TRAIN_PATTERN_1;
3798 /* BPC in FDI rx is consistent with that in PIPECONF */
3799 temp &= ~(0x07 << 16);
3800 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3801 I915_WRITE(reg, temp);
3807 bool intel_has_pending_fb_unpin(struct drm_device *dev)
3809 struct intel_crtc *crtc;
3811 /* Note that we don't need to be called with mode_config.lock here
3812 * as our list of CRTC objects is static for the lifetime of the
3813 * device and so cannot disappear as we iterate. Similarly, we can
3814 * happily treat the predicates as racy, atomic checks as userspace
3815 * cannot claim and pin a new fb without at least acquring the
3816 * struct_mutex and so serialising with us.
3818 for_each_intel_crtc(dev, crtc) {
3819 if (atomic_read(&crtc->unpin_work_count) == 0)
3822 if (crtc->flip_work)
3823 intel_wait_for_vblank(dev, crtc->pipe);
3831 static void page_flip_completed(struct intel_crtc *intel_crtc)
3833 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3834 struct intel_flip_work *work = intel_crtc->flip_work;
3836 intel_crtc->flip_work = NULL;
3839 drm_crtc_send_vblank_event(&intel_crtc->base, work->event);
3841 drm_crtc_vblank_put(&intel_crtc->base);
3843 wake_up_all(&dev_priv->pending_flip_queue);
3844 queue_work(dev_priv->wq, &work->unpin_work);
3846 trace_i915_flip_complete(intel_crtc->plane,
3847 work->pending_flip_obj);
3850 static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
3852 struct drm_device *dev = crtc->dev;
3853 struct drm_i915_private *dev_priv = dev->dev_private;
3856 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
3858 ret = wait_event_interruptible_timeout(
3859 dev_priv->pending_flip_queue,
3860 !intel_crtc_has_pending_flip(crtc),
3867 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3868 struct intel_flip_work *work;
3870 spin_lock_irq(&dev->event_lock);
3871 work = intel_crtc->flip_work;
3872 if (work && !is_mmio_work(work)) {
3873 WARN_ONCE(1, "Removing stuck page flip\n");
3874 page_flip_completed(intel_crtc);
3876 spin_unlock_irq(&dev->event_lock);
3882 static void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
3886 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3888 mutex_lock(&dev_priv->sb_lock);
3890 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
3891 temp |= SBI_SSCCTL_DISABLE;
3892 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
3894 mutex_unlock(&dev_priv->sb_lock);
3897 /* Program iCLKIP clock to the desired frequency */
3898 static void lpt_program_iclkip(struct drm_crtc *crtc)
3900 struct drm_i915_private *dev_priv = to_i915(crtc->dev);
3901 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
3902 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3905 lpt_disable_iclkip(dev_priv);
3907 /* The iCLK virtual clock root frequency is in MHz,
3908 * but the adjusted_mode->crtc_clock in in KHz. To get the
3909 * divisors, it is necessary to divide one by another, so we
3910 * convert the virtual clock precision to KHz here for higher
3913 for (auxdiv = 0; auxdiv < 2; auxdiv++) {
3914 u32 iclk_virtual_root_freq = 172800 * 1000;
3915 u32 iclk_pi_range = 64;
3916 u32 desired_divisor;
3918 desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
3920 divsel = (desired_divisor / iclk_pi_range) - 2;
3921 phaseinc = desired_divisor % iclk_pi_range;
3924 * Near 20MHz is a corner case which is
3925 * out of range for the 7-bit divisor
3931 /* This should not happen with any sane values */
3932 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
3933 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
3934 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
3935 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
3937 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
3944 mutex_lock(&dev_priv->sb_lock);
3946 /* Program SSCDIVINTPHASE6 */
3947 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
3948 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
3949 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
3950 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
3951 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
3952 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
3953 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
3954 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
3956 /* Program SSCAUXDIV */
3957 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
3958 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
3959 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
3960 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
3962 /* Enable modulator and associated divider */
3963 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
3964 temp &= ~SBI_SSCCTL_DISABLE;
3965 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
3967 mutex_unlock(&dev_priv->sb_lock);
3969 /* Wait for initialization time */
3972 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
3975 int lpt_get_iclkip(struct drm_i915_private *dev_priv)
3977 u32 divsel, phaseinc, auxdiv;
3978 u32 iclk_virtual_root_freq = 172800 * 1000;
3979 u32 iclk_pi_range = 64;
3980 u32 desired_divisor;
3983 if ((I915_READ(PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0)
3986 mutex_lock(&dev_priv->sb_lock);
3988 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
3989 if (temp & SBI_SSCCTL_DISABLE) {
3990 mutex_unlock(&dev_priv->sb_lock);
3994 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
3995 divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >>
3996 SBI_SSCDIVINTPHASE_DIVSEL_SHIFT;
3997 phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >>
3998 SBI_SSCDIVINTPHASE_INCVAL_SHIFT;
4000 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
4001 auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >>
4002 SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT;
4004 mutex_unlock(&dev_priv->sb_lock);
4006 desired_divisor = (divsel + 2) * iclk_pi_range + phaseinc;
4008 return DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
4009 desired_divisor << auxdiv);
4012 static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
4013 enum pipe pch_transcoder)
4015 struct drm_device *dev = crtc->base.dev;
4016 struct drm_i915_private *dev_priv = dev->dev_private;
4017 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
4019 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
4020 I915_READ(HTOTAL(cpu_transcoder)));
4021 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
4022 I915_READ(HBLANK(cpu_transcoder)));
4023 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
4024 I915_READ(HSYNC(cpu_transcoder)));
4026 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
4027 I915_READ(VTOTAL(cpu_transcoder)));
4028 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
4029 I915_READ(VBLANK(cpu_transcoder)));
4030 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
4031 I915_READ(VSYNC(cpu_transcoder)));
4032 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4033 I915_READ(VSYNCSHIFT(cpu_transcoder)));
4036 static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
4038 struct drm_i915_private *dev_priv = dev->dev_private;
4041 temp = I915_READ(SOUTH_CHICKEN1);
4042 if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
4045 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4046 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4048 temp &= ~FDI_BC_BIFURCATION_SELECT;
4050 temp |= FDI_BC_BIFURCATION_SELECT;
4052 DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
4053 I915_WRITE(SOUTH_CHICKEN1, temp);
4054 POSTING_READ(SOUTH_CHICKEN1);
4057 static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
4059 struct drm_device *dev = intel_crtc->base.dev;
4061 switch (intel_crtc->pipe) {
4065 if (intel_crtc->config->fdi_lanes > 2)
4066 cpt_set_fdi_bc_bifurcation(dev, false);
4068 cpt_set_fdi_bc_bifurcation(dev, true);
4072 cpt_set_fdi_bc_bifurcation(dev, true);
4080 /* Return which DP Port should be selected for Transcoder DP control */
4082 intel_trans_dp_port_sel(struct drm_crtc *crtc)
4084 struct drm_device *dev = crtc->dev;
4085 struct intel_encoder *encoder;
4087 for_each_encoder_on_crtc(dev, crtc, encoder) {
4088 if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
4089 encoder->type == INTEL_OUTPUT_EDP)
4090 return enc_to_dig_port(&encoder->base)->port;
4097 * Enable PCH resources required for PCH ports:
4099 * - FDI training & RX/TX
4100 * - update transcoder timings
4101 * - DP transcoding bits
4104 static void ironlake_pch_enable(struct drm_crtc *crtc)
4106 struct drm_device *dev = crtc->dev;
4107 struct drm_i915_private *dev_priv = dev->dev_private;
4108 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4109 int pipe = intel_crtc->pipe;
4112 assert_pch_transcoder_disabled(dev_priv, pipe);
4114 if (IS_IVYBRIDGE(dev))
4115 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
4117 /* Write the TU size bits before fdi link training, so that error
4118 * detection works. */
4119 I915_WRITE(FDI_RX_TUSIZE1(pipe),
4120 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4122 /* For PCH output, training FDI link */
4123 dev_priv->display.fdi_link_train(crtc);
4125 /* We need to program the right clock selection before writing the pixel
4126 * mutliplier into the DPLL. */
4127 if (HAS_PCH_CPT(dev)) {
4130 temp = I915_READ(PCH_DPLL_SEL);
4131 temp |= TRANS_DPLL_ENABLE(pipe);
4132 sel = TRANS_DPLLB_SEL(pipe);
4133 if (intel_crtc->config->shared_dpll ==
4134 intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
4138 I915_WRITE(PCH_DPLL_SEL, temp);
4141 /* XXX: pch pll's can be enabled any time before we enable the PCH
4142 * transcoder, and we actually should do this to not upset any PCH
4143 * transcoder that already use the clock when we share it.
4145 * Note that enable_shared_dpll tries to do the right thing, but
4146 * get_shared_dpll unconditionally resets the pll - we need that to have
4147 * the right LVDS enable sequence. */
4148 intel_enable_shared_dpll(intel_crtc);
4150 /* set transcoder timing, panel must allow it */
4151 assert_panel_unlocked(dev_priv, pipe);
4152 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
4154 intel_fdi_normal_train(crtc);
4156 /* For PCH DP, enable TRANS_DP_CTL */
4157 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
4158 const struct drm_display_mode *adjusted_mode =
4159 &intel_crtc->config->base.adjusted_mode;
4160 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
4161 i915_reg_t reg = TRANS_DP_CTL(pipe);
4162 temp = I915_READ(reg);
4163 temp &= ~(TRANS_DP_PORT_SEL_MASK |
4164 TRANS_DP_SYNC_MASK |
4166 temp |= TRANS_DP_OUTPUT_ENABLE;
4167 temp |= bpc << 9; /* same format but at 11:9 */
4169 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
4170 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
4171 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
4172 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
4174 switch (intel_trans_dp_port_sel(crtc)) {
4176 temp |= TRANS_DP_PORT_SEL_B;
4179 temp |= TRANS_DP_PORT_SEL_C;
4182 temp |= TRANS_DP_PORT_SEL_D;
4188 I915_WRITE(reg, temp);
4191 ironlake_enable_pch_transcoder(dev_priv, pipe);
4194 static void lpt_pch_enable(struct drm_crtc *crtc)
4196 struct drm_device *dev = crtc->dev;
4197 struct drm_i915_private *dev_priv = dev->dev_private;
4198 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4199 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4201 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
4203 lpt_program_iclkip(crtc);
4205 /* Set transcoder timing. */
4206 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
4208 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
4211 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4213 struct drm_i915_private *dev_priv = dev->dev_private;
4214 i915_reg_t dslreg = PIPEDSL(pipe);
4217 temp = I915_READ(dslreg);
4219 if (wait_for(I915_READ(dslreg) != temp, 5)) {
4220 if (wait_for(I915_READ(dslreg) != temp, 5))
4221 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4226 skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
4227 unsigned scaler_user, int *scaler_id, unsigned int rotation,
4228 int src_w, int src_h, int dst_w, int dst_h)
4230 struct intel_crtc_scaler_state *scaler_state =
4231 &crtc_state->scaler_state;
4232 struct intel_crtc *intel_crtc =
4233 to_intel_crtc(crtc_state->base.crtc);
4236 need_scaling = intel_rotation_90_or_270(rotation) ?
4237 (src_h != dst_w || src_w != dst_h):
4238 (src_w != dst_w || src_h != dst_h);
4241 * if plane is being disabled or scaler is no more required or force detach
4242 * - free scaler binded to this plane/crtc
4243 * - in order to do this, update crtc->scaler_usage
4245 * Here scaler state in crtc_state is set free so that
4246 * scaler can be assigned to other user. Actual register
4247 * update to free the scaler is done in plane/panel-fit programming.
4248 * For this purpose crtc/plane_state->scaler_id isn't reset here.
4250 if (force_detach || !need_scaling) {
4251 if (*scaler_id >= 0) {
4252 scaler_state->scaler_users &= ~(1 << scaler_user);
4253 scaler_state->scalers[*scaler_id].in_use = 0;
4255 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4256 "Staged freeing scaler id %d scaler_users = 0x%x\n",
4257 intel_crtc->pipe, scaler_user, *scaler_id,
4258 scaler_state->scaler_users);
4265 if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
4266 dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
4268 src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
4269 dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
4270 DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
4271 "size is out of scaler range\n",
4272 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
4276 /* mark this plane as a scaler user in crtc_state */
4277 scaler_state->scaler_users |= (1 << scaler_user);
4278 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4279 "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
4280 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
4281 scaler_state->scaler_users);
4287 * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
4289 * @state: crtc's scaler state
4292 * 0 - scaler_usage updated successfully
4293 * error - requested scaling cannot be supported or other error condition
4295 int skl_update_scaler_crtc(struct intel_crtc_state *state)
4297 struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
4298 const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
4300 DRM_DEBUG_KMS("Updating scaler for [CRTC:%d:%s] scaler_user index %u.%u\n",
4301 intel_crtc->base.base.id, intel_crtc->base.name,
4302 intel_crtc->pipe, SKL_CRTC_INDEX);
4304 return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
4305 &state->scaler_state.scaler_id, BIT(DRM_ROTATE_0),
4306 state->pipe_src_w, state->pipe_src_h,
4307 adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
4311 * skl_update_scaler_plane - Stages update to scaler state for a given plane.
4313 * @state: crtc's scaler state
4314 * @plane_state: atomic plane state to update
4317 * 0 - scaler_usage updated successfully
4318 * error - requested scaling cannot be supported or other error condition
4320 static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
4321 struct intel_plane_state *plane_state)
4324 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
4325 struct intel_plane *intel_plane =
4326 to_intel_plane(plane_state->base.plane);
4327 struct drm_framebuffer *fb = plane_state->base.fb;
4330 bool force_detach = !fb || !plane_state->visible;
4332 DRM_DEBUG_KMS("Updating scaler for [PLANE:%d:%s] scaler_user index %u.%u\n",
4333 intel_plane->base.base.id, intel_plane->base.name,
4334 intel_crtc->pipe, drm_plane_index(&intel_plane->base));
4336 ret = skl_update_scaler(crtc_state, force_detach,
4337 drm_plane_index(&intel_plane->base),
4338 &plane_state->scaler_id,
4339 plane_state->base.rotation,
4340 drm_rect_width(&plane_state->src) >> 16,
4341 drm_rect_height(&plane_state->src) >> 16,
4342 drm_rect_width(&plane_state->dst),
4343 drm_rect_height(&plane_state->dst));
4345 if (ret || plane_state->scaler_id < 0)
4348 /* check colorkey */
4349 if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
4350 DRM_DEBUG_KMS("[PLANE:%d:%s] scaling with color key not allowed",
4351 intel_plane->base.base.id,
4352 intel_plane->base.name);
4356 /* Check src format */
4357 switch (fb->pixel_format) {
4358 case DRM_FORMAT_RGB565:
4359 case DRM_FORMAT_XBGR8888:
4360 case DRM_FORMAT_XRGB8888:
4361 case DRM_FORMAT_ABGR8888:
4362 case DRM_FORMAT_ARGB8888:
4363 case DRM_FORMAT_XRGB2101010:
4364 case DRM_FORMAT_XBGR2101010:
4365 case DRM_FORMAT_YUYV:
4366 case DRM_FORMAT_YVYU:
4367 case DRM_FORMAT_UYVY:
4368 case DRM_FORMAT_VYUY:
4371 DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
4372 intel_plane->base.base.id, intel_plane->base.name,
4373 fb->base.id, fb->pixel_format);
4380 static void skylake_scaler_disable(struct intel_crtc *crtc)
4384 for (i = 0; i < crtc->num_scalers; i++)
4385 skl_detach_scaler(crtc, i);
4388 static void skylake_pfit_enable(struct intel_crtc *crtc)
4390 struct drm_device *dev = crtc->base.dev;
4391 struct drm_i915_private *dev_priv = dev->dev_private;
4392 int pipe = crtc->pipe;
4393 struct intel_crtc_scaler_state *scaler_state =
4394 &crtc->config->scaler_state;
4396 DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
4398 if (crtc->config->pch_pfit.enabled) {
4401 if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
4402 DRM_ERROR("Requesting pfit without getting a scaler first\n");
4406 id = scaler_state->scaler_id;
4407 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
4408 PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
4409 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
4410 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
4412 DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
4416 static void ironlake_pfit_enable(struct intel_crtc *crtc)
4418 struct drm_device *dev = crtc->base.dev;
4419 struct drm_i915_private *dev_priv = dev->dev_private;
4420 int pipe = crtc->pipe;
4422 if (crtc->config->pch_pfit.enabled) {
4423 /* Force use of hard-coded filter coefficients
4424 * as some pre-programmed values are broken,
4427 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4428 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4429 PF_PIPE_SEL_IVB(pipe));
4431 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
4432 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4433 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4437 void hsw_enable_ips(struct intel_crtc *crtc)
4439 struct drm_device *dev = crtc->base.dev;
4440 struct drm_i915_private *dev_priv = dev->dev_private;
4442 if (!crtc->config->ips_enabled)
4446 * We can only enable IPS after we enable a plane and wait for a vblank
4447 * This function is called from post_plane_update, which is run after
4451 assert_plane_enabled(dev_priv, crtc->plane);
4452 if (IS_BROADWELL(dev)) {
4453 mutex_lock(&dev_priv->rps.hw_lock);
4454 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4455 mutex_unlock(&dev_priv->rps.hw_lock);
4456 /* Quoting Art Runyan: "its not safe to expect any particular
4457 * value in IPS_CTL bit 31 after enabling IPS through the
4458 * mailbox." Moreover, the mailbox may return a bogus state,
4459 * so we need to just enable it and continue on.
4462 I915_WRITE(IPS_CTL, IPS_ENABLE);
4463 /* The bit only becomes 1 in the next vblank, so this wait here
4464 * is essentially intel_wait_for_vblank. If we don't have this
4465 * and don't wait for vblanks until the end of crtc_enable, then
4466 * the HW state readout code will complain that the expected
4467 * IPS_CTL value is not the one we read. */
4468 if (intel_wait_for_register(dev_priv,
4469 IPS_CTL, IPS_ENABLE, IPS_ENABLE,
4471 DRM_ERROR("Timed out waiting for IPS enable\n");
4475 void hsw_disable_ips(struct intel_crtc *crtc)
4477 struct drm_device *dev = crtc->base.dev;
4478 struct drm_i915_private *dev_priv = dev->dev_private;
4480 if (!crtc->config->ips_enabled)
4483 assert_plane_enabled(dev_priv, crtc->plane);
4484 if (IS_BROADWELL(dev)) {
4485 mutex_lock(&dev_priv->rps.hw_lock);
4486 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4487 mutex_unlock(&dev_priv->rps.hw_lock);
4488 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4489 if (intel_wait_for_register(dev_priv,
4490 IPS_CTL, IPS_ENABLE, 0,
4492 DRM_ERROR("Timed out waiting for IPS disable\n");
4494 I915_WRITE(IPS_CTL, 0);
4495 POSTING_READ(IPS_CTL);
4498 /* We need to wait for a vblank before we can disable the plane. */
4499 intel_wait_for_vblank(dev, crtc->pipe);
4502 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
4504 if (intel_crtc->overlay) {
4505 struct drm_device *dev = intel_crtc->base.dev;
4506 struct drm_i915_private *dev_priv = dev->dev_private;
4508 mutex_lock(&dev->struct_mutex);
4509 dev_priv->mm.interruptible = false;
4510 (void) intel_overlay_switch_off(intel_crtc->overlay);
4511 dev_priv->mm.interruptible = true;
4512 mutex_unlock(&dev->struct_mutex);
4515 /* Let userspace switch the overlay on again. In most cases userspace
4516 * has to recompute where to put it anyway.
4521 * intel_post_enable_primary - Perform operations after enabling primary plane
4522 * @crtc: the CRTC whose primary plane was just enabled
4524 * Performs potentially sleeping operations that must be done after the primary
4525 * plane is enabled, such as updating FBC and IPS. Note that this may be
4526 * called due to an explicit primary plane update, or due to an implicit
4527 * re-enable that is caused when a sprite plane is updated to no longer
4528 * completely hide the primary plane.
4531 intel_post_enable_primary(struct drm_crtc *crtc)
4533 struct drm_device *dev = crtc->dev;
4534 struct drm_i915_private *dev_priv = dev->dev_private;
4535 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4536 int pipe = intel_crtc->pipe;
4539 * FIXME IPS should be fine as long as one plane is
4540 * enabled, but in practice it seems to have problems
4541 * when going from primary only to sprite only and vice
4544 hsw_enable_ips(intel_crtc);
4547 * Gen2 reports pipe underruns whenever all planes are disabled.
4548 * So don't enable underrun reporting before at least some planes
4550 * FIXME: Need to fix the logic to work when we turn off all planes
4551 * but leave the pipe running.
4554 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4556 /* Underruns don't always raise interrupts, so check manually. */
4557 intel_check_cpu_fifo_underruns(dev_priv);
4558 intel_check_pch_fifo_underruns(dev_priv);
4561 /* FIXME move all this to pre_plane_update() with proper state tracking */
4563 intel_pre_disable_primary(struct drm_crtc *crtc)
4565 struct drm_device *dev = crtc->dev;
4566 struct drm_i915_private *dev_priv = dev->dev_private;
4567 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4568 int pipe = intel_crtc->pipe;
4571 * Gen2 reports pipe underruns whenever all planes are disabled.
4572 * So diasble underrun reporting before all the planes get disabled.
4573 * FIXME: Need to fix the logic to work when we turn off all planes
4574 * but leave the pipe running.
4577 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4580 * FIXME IPS should be fine as long as one plane is
4581 * enabled, but in practice it seems to have problems
4582 * when going from primary only to sprite only and vice
4585 hsw_disable_ips(intel_crtc);
4588 /* FIXME get rid of this and use pre_plane_update */
4590 intel_pre_disable_primary_noatomic(struct drm_crtc *crtc)
4592 struct drm_device *dev = crtc->dev;
4593 struct drm_i915_private *dev_priv = dev->dev_private;
4594 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4595 int pipe = intel_crtc->pipe;
4597 intel_pre_disable_primary(crtc);
4600 * Vblank time updates from the shadow to live plane control register
4601 * are blocked if the memory self-refresh mode is active at that
4602 * moment. So to make sure the plane gets truly disabled, disable
4603 * first the self-refresh mode. The self-refresh enable bit in turn
4604 * will be checked/applied by the HW only at the next frame start
4605 * event which is after the vblank start event, so we need to have a
4606 * wait-for-vblank between disabling the plane and the pipe.
4608 if (HAS_GMCH_DISPLAY(dev)) {
4609 intel_set_memory_cxsr(dev_priv, false);
4610 dev_priv->wm.vlv.cxsr = false;
4611 intel_wait_for_vblank(dev, pipe);
4615 static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state)
4617 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
4618 struct drm_atomic_state *old_state = old_crtc_state->base.state;
4619 struct intel_crtc_state *pipe_config =
4620 to_intel_crtc_state(crtc->base.state);
4621 struct drm_device *dev = crtc->base.dev;
4622 struct drm_plane *primary = crtc->base.primary;
4623 struct drm_plane_state *old_pri_state =
4624 drm_atomic_get_existing_plane_state(old_state, primary);
4626 intel_frontbuffer_flip(dev, pipe_config->fb_bits);
4628 crtc->wm.cxsr_allowed = true;
4630 if (pipe_config->update_wm_post && pipe_config->base.active)
4631 intel_update_watermarks(&crtc->base);
4633 if (old_pri_state) {
4634 struct intel_plane_state *primary_state =
4635 to_intel_plane_state(primary->state);
4636 struct intel_plane_state *old_primary_state =
4637 to_intel_plane_state(old_pri_state);
4639 intel_fbc_post_update(crtc);
4641 if (primary_state->visible &&
4642 (needs_modeset(&pipe_config->base) ||
4643 !old_primary_state->visible))
4644 intel_post_enable_primary(&crtc->base);
4648 static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
4650 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
4651 struct drm_device *dev = crtc->base.dev;
4652 struct drm_i915_private *dev_priv = dev->dev_private;
4653 struct intel_crtc_state *pipe_config =
4654 to_intel_crtc_state(crtc->base.state);
4655 struct drm_atomic_state *old_state = old_crtc_state->base.state;
4656 struct drm_plane *primary = crtc->base.primary;
4657 struct drm_plane_state *old_pri_state =
4658 drm_atomic_get_existing_plane_state(old_state, primary);
4659 bool modeset = needs_modeset(&pipe_config->base);
4661 if (old_pri_state) {
4662 struct intel_plane_state *primary_state =
4663 to_intel_plane_state(primary->state);
4664 struct intel_plane_state *old_primary_state =
4665 to_intel_plane_state(old_pri_state);
4667 intel_fbc_pre_update(crtc, pipe_config, primary_state);
4669 if (old_primary_state->visible &&
4670 (modeset || !primary_state->visible))
4671 intel_pre_disable_primary(&crtc->base);
4674 if (pipe_config->disable_cxsr && HAS_GMCH_DISPLAY(dev)) {
4675 crtc->wm.cxsr_allowed = false;
4678 * Vblank time updates from the shadow to live plane control register
4679 * are blocked if the memory self-refresh mode is active at that
4680 * moment. So to make sure the plane gets truly disabled, disable
4681 * first the self-refresh mode. The self-refresh enable bit in turn
4682 * will be checked/applied by the HW only at the next frame start
4683 * event which is after the vblank start event, so we need to have a
4684 * wait-for-vblank between disabling the plane and the pipe.
4686 if (old_crtc_state->base.active) {
4687 intel_set_memory_cxsr(dev_priv, false);
4688 dev_priv->wm.vlv.cxsr = false;
4689 intel_wait_for_vblank(dev, crtc->pipe);
4694 * IVB workaround: must disable low power watermarks for at least
4695 * one frame before enabling scaling. LP watermarks can be re-enabled
4696 * when scaling is disabled.
4698 * WaCxSRDisabledForSpriteScaling:ivb
4700 if (pipe_config->disable_lp_wm) {
4701 ilk_disable_lp_wm(dev);
4702 intel_wait_for_vblank(dev, crtc->pipe);
4706 * If we're doing a modeset, we're done. No need to do any pre-vblank
4707 * watermark programming here.
4709 if (needs_modeset(&pipe_config->base))
4713 * For platforms that support atomic watermarks, program the
4714 * 'intermediate' watermarks immediately. On pre-gen9 platforms, these
4715 * will be the intermediate values that are safe for both pre- and
4716 * post- vblank; when vblank happens, the 'active' values will be set
4717 * to the final 'target' values and we'll do this again to get the
4718 * optimal watermarks. For gen9+ platforms, the values we program here
4719 * will be the final target values which will get automatically latched
4720 * at vblank time; no further programming will be necessary.
4722 * If a platform hasn't been transitioned to atomic watermarks yet,
4723 * we'll continue to update watermarks the old way, if flags tell
4726 if (dev_priv->display.initial_watermarks != NULL)
4727 dev_priv->display.initial_watermarks(pipe_config);
4728 else if (pipe_config->update_wm_pre)
4729 intel_update_watermarks(&crtc->base);
4732 static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask)
4734 struct drm_device *dev = crtc->dev;
4735 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4736 struct drm_plane *p;
4737 int pipe = intel_crtc->pipe;
4739 intel_crtc_dpms_overlay_disable(intel_crtc);
4741 drm_for_each_plane_mask(p, dev, plane_mask)
4742 to_intel_plane(p)->disable_plane(p, crtc);
4745 * FIXME: Once we grow proper nuclear flip support out of this we need
4746 * to compute the mask of flip planes precisely. For the time being
4747 * consider this a flip to a NULL plane.
4749 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4752 static void ironlake_crtc_enable(struct drm_crtc *crtc)
4754 struct drm_device *dev = crtc->dev;
4755 struct drm_i915_private *dev_priv = dev->dev_private;
4756 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4757 struct intel_encoder *encoder;
4758 int pipe = intel_crtc->pipe;
4759 struct intel_crtc_state *pipe_config =
4760 to_intel_crtc_state(crtc->state);
4762 if (WARN_ON(intel_crtc->active))
4766 * Sometimes spurious CPU pipe underruns happen during FDI
4767 * training, at least with VGA+HDMI cloning. Suppress them.
4769 * On ILK we get an occasional spurious CPU pipe underruns
4770 * between eDP port A enable and vdd enable. Also PCH port
4771 * enable seems to result in the occasional CPU pipe underrun.
4773 * Spurious PCH underruns also occur during PCH enabling.
4775 if (intel_crtc->config->has_pch_encoder || IS_GEN5(dev_priv))
4776 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4777 if (intel_crtc->config->has_pch_encoder)
4778 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
4780 if (intel_crtc->config->has_pch_encoder)
4781 intel_prepare_shared_dpll(intel_crtc);
4783 if (intel_crtc->config->has_dp_encoder)
4784 intel_dp_set_m_n(intel_crtc, M1_N1);
4786 intel_set_pipe_timings(intel_crtc);
4787 intel_set_pipe_src_size(intel_crtc);
4789 if (intel_crtc->config->has_pch_encoder) {
4790 intel_cpu_transcoder_set_m_n(intel_crtc,
4791 &intel_crtc->config->fdi_m_n, NULL);
4794 ironlake_set_pipeconf(crtc);
4796 intel_crtc->active = true;
4798 for_each_encoder_on_crtc(dev, crtc, encoder)
4799 if (encoder->pre_enable)
4800 encoder->pre_enable(encoder);
4802 if (intel_crtc->config->has_pch_encoder) {
4803 /* Note: FDI PLL enabling _must_ be done before we enable the
4804 * cpu pipes, hence this is separate from all the other fdi/pch
4806 ironlake_fdi_pll_enable(intel_crtc);
4808 assert_fdi_tx_disabled(dev_priv, pipe);
4809 assert_fdi_rx_disabled(dev_priv, pipe);
4812 ironlake_pfit_enable(intel_crtc);
4815 * On ILK+ LUT must be loaded before the pipe is running but with
4818 intel_color_load_luts(&pipe_config->base);
4820 if (dev_priv->display.initial_watermarks != NULL)
4821 dev_priv->display.initial_watermarks(intel_crtc->config);
4822 intel_enable_pipe(intel_crtc);
4824 if (intel_crtc->config->has_pch_encoder)
4825 ironlake_pch_enable(crtc);
4827 assert_vblank_disabled(crtc);
4828 drm_crtc_vblank_on(crtc);
4830 for_each_encoder_on_crtc(dev, crtc, encoder)
4831 encoder->enable(encoder);
4833 if (HAS_PCH_CPT(dev))
4834 cpt_verify_modeset(dev, intel_crtc->pipe);
4836 /* Must wait for vblank to avoid spurious PCH FIFO underruns */
4837 if (intel_crtc->config->has_pch_encoder)
4838 intel_wait_for_vblank(dev, pipe);
4839 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4840 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
4843 /* IPS only exists on ULT machines and is tied to pipe A. */
4844 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4846 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
4849 static void haswell_crtc_enable(struct drm_crtc *crtc)
4851 struct drm_device *dev = crtc->dev;
4852 struct drm_i915_private *dev_priv = dev->dev_private;
4853 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4854 struct intel_encoder *encoder;
4855 int pipe = intel_crtc->pipe, hsw_workaround_pipe;
4856 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4857 struct intel_crtc_state *pipe_config =
4858 to_intel_crtc_state(crtc->state);
4860 if (WARN_ON(intel_crtc->active))
4863 if (intel_crtc->config->has_pch_encoder)
4864 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4867 for_each_encoder_on_crtc(dev, crtc, encoder)
4868 if (encoder->pre_pll_enable)
4869 encoder->pre_pll_enable(encoder);
4871 if (intel_crtc->config->shared_dpll)
4872 intel_enable_shared_dpll(intel_crtc);
4874 if (intel_crtc->config->has_dp_encoder)
4875 intel_dp_set_m_n(intel_crtc, M1_N1);
4877 if (!intel_crtc->config->has_dsi_encoder)
4878 intel_set_pipe_timings(intel_crtc);
4880 intel_set_pipe_src_size(intel_crtc);
4882 if (cpu_transcoder != TRANSCODER_EDP &&
4883 !transcoder_is_dsi(cpu_transcoder)) {
4884 I915_WRITE(PIPE_MULT(cpu_transcoder),
4885 intel_crtc->config->pixel_multiplier - 1);
4888 if (intel_crtc->config->has_pch_encoder) {
4889 intel_cpu_transcoder_set_m_n(intel_crtc,
4890 &intel_crtc->config->fdi_m_n, NULL);
4893 if (!intel_crtc->config->has_dsi_encoder)
4894 haswell_set_pipeconf(crtc);
4896 haswell_set_pipemisc(crtc);
4898 intel_color_set_csc(&pipe_config->base);
4900 intel_crtc->active = true;
4902 if (intel_crtc->config->has_pch_encoder)
4903 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4905 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4907 for_each_encoder_on_crtc(dev, crtc, encoder) {
4908 if (encoder->pre_enable)
4909 encoder->pre_enable(encoder);
4912 if (intel_crtc->config->has_pch_encoder)
4913 dev_priv->display.fdi_link_train(crtc);
4915 if (!intel_crtc->config->has_dsi_encoder)
4916 intel_ddi_enable_pipe_clock(intel_crtc);
4918 if (INTEL_INFO(dev)->gen >= 9)
4919 skylake_pfit_enable(intel_crtc);
4921 ironlake_pfit_enable(intel_crtc);
4924 * On ILK+ LUT must be loaded before the pipe is running but with
4927 intel_color_load_luts(&pipe_config->base);
4929 intel_ddi_set_pipe_settings(crtc);
4930 if (!intel_crtc->config->has_dsi_encoder)
4931 intel_ddi_enable_transcoder_func(crtc);
4933 if (dev_priv->display.initial_watermarks != NULL)
4934 dev_priv->display.initial_watermarks(pipe_config);
4936 intel_update_watermarks(crtc);
4938 /* XXX: Do the pipe assertions at the right place for BXT DSI. */
4939 if (!intel_crtc->config->has_dsi_encoder)
4940 intel_enable_pipe(intel_crtc);
4942 if (intel_crtc->config->has_pch_encoder)
4943 lpt_pch_enable(crtc);
4945 if (intel_crtc->config->dp_encoder_is_mst)
4946 intel_ddi_set_vc_payload_alloc(crtc, true);
4948 assert_vblank_disabled(crtc);
4949 drm_crtc_vblank_on(crtc);
4951 for_each_encoder_on_crtc(dev, crtc, encoder) {
4952 encoder->enable(encoder);
4953 intel_opregion_notify_encoder(encoder, true);
4956 if (intel_crtc->config->has_pch_encoder) {
4957 intel_wait_for_vblank(dev, pipe);
4958 intel_wait_for_vblank(dev, pipe);
4959 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4960 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4964 /* If we change the relative order between pipe/planes enabling, we need
4965 * to change the workaround. */
4966 hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
4967 if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) {
4968 intel_wait_for_vblank(dev, hsw_workaround_pipe);
4969 intel_wait_for_vblank(dev, hsw_workaround_pipe);
4973 static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force)
4975 struct drm_device *dev = crtc->base.dev;
4976 struct drm_i915_private *dev_priv = dev->dev_private;
4977 int pipe = crtc->pipe;
4979 /* To avoid upsetting the power well on haswell only disable the pfit if
4980 * it's in use. The hw state code will make sure we get this right. */
4981 if (force || crtc->config->pch_pfit.enabled) {
4982 I915_WRITE(PF_CTL(pipe), 0);
4983 I915_WRITE(PF_WIN_POS(pipe), 0);
4984 I915_WRITE(PF_WIN_SZ(pipe), 0);
4988 static void ironlake_crtc_disable(struct drm_crtc *crtc)
4990 struct drm_device *dev = crtc->dev;
4991 struct drm_i915_private *dev_priv = dev->dev_private;
4992 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4993 struct intel_encoder *encoder;
4994 int pipe = intel_crtc->pipe;
4997 * Sometimes spurious CPU pipe underruns happen when the
4998 * pipe is already disabled, but FDI RX/TX is still enabled.
4999 * Happens at least with VGA+HDMI cloning. Suppress them.
5001 if (intel_crtc->config->has_pch_encoder) {
5002 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
5003 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
5006 for_each_encoder_on_crtc(dev, crtc, encoder)
5007 encoder->disable(encoder);
5009 drm_crtc_vblank_off(crtc);
5010 assert_vblank_disabled(crtc);
5012 intel_disable_pipe(intel_crtc);
5014 ironlake_pfit_disable(intel_crtc, false);
5016 if (intel_crtc->config->has_pch_encoder)
5017 ironlake_fdi_disable(crtc);
5019 for_each_encoder_on_crtc(dev, crtc, encoder)
5020 if (encoder->post_disable)
5021 encoder->post_disable(encoder);
5023 if (intel_crtc->config->has_pch_encoder) {
5024 ironlake_disable_pch_transcoder(dev_priv, pipe);
5026 if (HAS_PCH_CPT(dev)) {
5030 /* disable TRANS_DP_CTL */
5031 reg = TRANS_DP_CTL(pipe);
5032 temp = I915_READ(reg);
5033 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
5034 TRANS_DP_PORT_SEL_MASK);
5035 temp |= TRANS_DP_PORT_SEL_NONE;
5036 I915_WRITE(reg, temp);
5038 /* disable DPLL_SEL */
5039 temp = I915_READ(PCH_DPLL_SEL);
5040 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
5041 I915_WRITE(PCH_DPLL_SEL, temp);
5044 ironlake_fdi_pll_disable(intel_crtc);
5047 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5048 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
5051 static void haswell_crtc_disable(struct drm_crtc *crtc)
5053 struct drm_device *dev = crtc->dev;
5054 struct drm_i915_private *dev_priv = dev->dev_private;
5055 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5056 struct intel_encoder *encoder;
5057 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
5059 if (intel_crtc->config->has_pch_encoder)
5060 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5063 for_each_encoder_on_crtc(dev, crtc, encoder) {
5064 intel_opregion_notify_encoder(encoder, false);
5065 encoder->disable(encoder);
5068 drm_crtc_vblank_off(crtc);
5069 assert_vblank_disabled(crtc);
5071 /* XXX: Do the pipe assertions at the right place for BXT DSI. */
5072 if (!intel_crtc->config->has_dsi_encoder)
5073 intel_disable_pipe(intel_crtc);
5075 if (intel_crtc->config->dp_encoder_is_mst)
5076 intel_ddi_set_vc_payload_alloc(crtc, false);
5078 if (!intel_crtc->config->has_dsi_encoder)
5079 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
5081 if (INTEL_INFO(dev)->gen >= 9)
5082 skylake_scaler_disable(intel_crtc);
5084 ironlake_pfit_disable(intel_crtc, false);
5086 if (!intel_crtc->config->has_dsi_encoder)
5087 intel_ddi_disable_pipe_clock(intel_crtc);
5089 for_each_encoder_on_crtc(dev, crtc, encoder)
5090 if (encoder->post_disable)
5091 encoder->post_disable(encoder);
5093 if (intel_crtc->config->has_pch_encoder) {
5094 lpt_disable_pch_transcoder(dev_priv);
5095 lpt_disable_iclkip(dev_priv);
5096 intel_ddi_fdi_disable(crtc);
5098 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5103 static void i9xx_pfit_enable(struct intel_crtc *crtc)
5105 struct drm_device *dev = crtc->base.dev;
5106 struct drm_i915_private *dev_priv = dev->dev_private;
5107 struct intel_crtc_state *pipe_config = crtc->config;
5109 if (!pipe_config->gmch_pfit.control)
5113 * The panel fitter should only be adjusted whilst the pipe is disabled,
5114 * according to register description and PRM.
5116 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
5117 assert_pipe_disabled(dev_priv, crtc->pipe);
5119 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
5120 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
5122 /* Border color in case we don't scale up to the full screen. Black by
5123 * default, change to something else for debugging. */
5124 I915_WRITE(BCLRPAT(crtc->pipe), 0);
5127 static enum intel_display_power_domain port_to_power_domain(enum port port)
5131 return POWER_DOMAIN_PORT_DDI_A_LANES;
5133 return POWER_DOMAIN_PORT_DDI_B_LANES;
5135 return POWER_DOMAIN_PORT_DDI_C_LANES;
5137 return POWER_DOMAIN_PORT_DDI_D_LANES;
5139 return POWER_DOMAIN_PORT_DDI_E_LANES;
5142 return POWER_DOMAIN_PORT_OTHER;
5146 static enum intel_display_power_domain port_to_aux_power_domain(enum port port)
5150 return POWER_DOMAIN_AUX_A;
5152 return POWER_DOMAIN_AUX_B;
5154 return POWER_DOMAIN_AUX_C;
5156 return POWER_DOMAIN_AUX_D;
5158 /* FIXME: Check VBT for actual wiring of PORT E */
5159 return POWER_DOMAIN_AUX_D;
5162 return POWER_DOMAIN_AUX_A;
5166 enum intel_display_power_domain
5167 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
5169 struct drm_device *dev = intel_encoder->base.dev;
5170 struct intel_digital_port *intel_dig_port;
5172 switch (intel_encoder->type) {
5173 case INTEL_OUTPUT_UNKNOWN:
5174 /* Only DDI platforms should ever use this output type */
5175 WARN_ON_ONCE(!HAS_DDI(dev));
5176 case INTEL_OUTPUT_DISPLAYPORT:
5177 case INTEL_OUTPUT_HDMI:
5178 case INTEL_OUTPUT_EDP:
5179 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
5180 return port_to_power_domain(intel_dig_port->port);
5181 case INTEL_OUTPUT_DP_MST:
5182 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5183 return port_to_power_domain(intel_dig_port->port);
5184 case INTEL_OUTPUT_ANALOG:
5185 return POWER_DOMAIN_PORT_CRT;
5186 case INTEL_OUTPUT_DSI:
5187 return POWER_DOMAIN_PORT_DSI;
5189 return POWER_DOMAIN_PORT_OTHER;
5193 enum intel_display_power_domain
5194 intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
5196 struct drm_device *dev = intel_encoder->base.dev;
5197 struct intel_digital_port *intel_dig_port;
5199 switch (intel_encoder->type) {
5200 case INTEL_OUTPUT_UNKNOWN:
5201 case INTEL_OUTPUT_HDMI:
5203 * Only DDI platforms should ever use these output types.
5204 * We can get here after the HDMI detect code has already set
5205 * the type of the shared encoder. Since we can't be sure
5206 * what's the status of the given connectors, play safe and
5207 * run the DP detection too.
5209 WARN_ON_ONCE(!HAS_DDI(dev));
5210 case INTEL_OUTPUT_DISPLAYPORT:
5211 case INTEL_OUTPUT_EDP:
5212 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
5213 return port_to_aux_power_domain(intel_dig_port->port);
5214 case INTEL_OUTPUT_DP_MST:
5215 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5216 return port_to_aux_power_domain(intel_dig_port->port);
5218 MISSING_CASE(intel_encoder->type);
5219 return POWER_DOMAIN_AUX_A;
5223 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc,
5224 struct intel_crtc_state *crtc_state)
5226 struct drm_device *dev = crtc->dev;
5227 struct drm_encoder *encoder;
5228 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5229 enum pipe pipe = intel_crtc->pipe;
5231 enum transcoder transcoder = crtc_state->cpu_transcoder;
5233 if (!crtc_state->base.active)
5236 mask = BIT(POWER_DOMAIN_PIPE(pipe));
5237 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
5238 if (crtc_state->pch_pfit.enabled ||
5239 crtc_state->pch_pfit.force_thru)
5240 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
5242 drm_for_each_encoder_mask(encoder, dev, crtc_state->base.encoder_mask) {
5243 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
5245 mask |= BIT(intel_display_port_power_domain(intel_encoder));
5248 if (crtc_state->shared_dpll)
5249 mask |= BIT(POWER_DOMAIN_PLLS);
5254 static unsigned long
5255 modeset_get_crtc_power_domains(struct drm_crtc *crtc,
5256 struct intel_crtc_state *crtc_state)
5258 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
5259 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5260 enum intel_display_power_domain domain;
5261 unsigned long domains, new_domains, old_domains;
5263 old_domains = intel_crtc->enabled_power_domains;
5264 intel_crtc->enabled_power_domains = new_domains =
5265 get_crtc_power_domains(crtc, crtc_state);
5267 domains = new_domains & ~old_domains;
5269 for_each_power_domain(domain, domains)
5270 intel_display_power_get(dev_priv, domain);
5272 return old_domains & ~new_domains;
5275 static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
5276 unsigned long domains)
5278 enum intel_display_power_domain domain;
5280 for_each_power_domain(domain, domains)
5281 intel_display_power_put(dev_priv, domain);
5284 static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
5286 int max_cdclk_freq = dev_priv->max_cdclk_freq;
5288 if (INTEL_INFO(dev_priv)->gen >= 9 ||
5289 IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
5290 return max_cdclk_freq;
5291 else if (IS_CHERRYVIEW(dev_priv))
5292 return max_cdclk_freq*95/100;
5293 else if (INTEL_INFO(dev_priv)->gen < 4)
5294 return 2*max_cdclk_freq*90/100;
5296 return max_cdclk_freq*90/100;
5299 static int skl_calc_cdclk(int max_pixclk, int vco);
5301 static void intel_update_max_cdclk(struct drm_device *dev)
5303 struct drm_i915_private *dev_priv = dev->dev_private;
5305 if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
5306 u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
5309 vco = dev_priv->skl_preferred_vco_freq;
5310 WARN_ON(vco != 8100000 && vco != 8640000);
5313 * Use the lower (vco 8640) cdclk values as a
5314 * first guess. skl_calc_cdclk() will correct it
5315 * if the preferred vco is 8100 instead.
5317 if (limit == SKL_DFSM_CDCLK_LIMIT_675)
5319 else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
5321 else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
5326 dev_priv->max_cdclk_freq = skl_calc_cdclk(max_cdclk, vco);
5327 } else if (IS_BROXTON(dev)) {
5328 dev_priv->max_cdclk_freq = 624000;
5329 } else if (IS_BROADWELL(dev)) {
5331 * FIXME with extra cooling we can allow
5332 * 540 MHz for ULX and 675 Mhz for ULT.
5333 * How can we know if extra cooling is
5334 * available? PCI ID, VTB, something else?
5336 if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
5337 dev_priv->max_cdclk_freq = 450000;
5338 else if (IS_BDW_ULX(dev))
5339 dev_priv->max_cdclk_freq = 450000;
5340 else if (IS_BDW_ULT(dev))
5341 dev_priv->max_cdclk_freq = 540000;
5343 dev_priv->max_cdclk_freq = 675000;
5344 } else if (IS_CHERRYVIEW(dev)) {
5345 dev_priv->max_cdclk_freq = 320000;
5346 } else if (IS_VALLEYVIEW(dev)) {
5347 dev_priv->max_cdclk_freq = 400000;
5349 /* otherwise assume cdclk is fixed */
5350 dev_priv->max_cdclk_freq = dev_priv->cdclk_freq;
5353 dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv);
5355 DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n",
5356 dev_priv->max_cdclk_freq);
5358 DRM_DEBUG_DRIVER("Max dotclock rate: %d kHz\n",
5359 dev_priv->max_dotclk_freq);
5362 static void intel_update_cdclk(struct drm_device *dev)
5364 struct drm_i915_private *dev_priv = dev->dev_private;
5366 dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
5368 if (INTEL_GEN(dev_priv) >= 9)
5369 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz, VCO: %d kHz, ref: %d kHz\n",
5370 dev_priv->cdclk_freq, dev_priv->cdclk_pll.vco,
5371 dev_priv->cdclk_pll.ref);
5373 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
5374 dev_priv->cdclk_freq);
5377 * 9:0 CMBUS [sic] CDCLK frequency (cdfreq):
5378 * Programmng [sic] note: bit[9:2] should be programmed to the number
5379 * of cdclk that generates 4MHz reference clock freq which is used to
5380 * generate GMBus clock. This will vary with the cdclk freq.
5382 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
5383 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
5386 /* convert from kHz to .1 fixpoint MHz with -1MHz offset */
5387 static int skl_cdclk_decimal(int cdclk)
5389 return DIV_ROUND_CLOSEST(cdclk - 1000, 500);
5392 static int bxt_de_pll_vco(struct drm_i915_private *dev_priv, int cdclk)
5396 if (cdclk == dev_priv->cdclk_pll.ref)
5401 MISSING_CASE(cdclk);
5413 return dev_priv->cdclk_pll.ref * ratio;
5416 static void bxt_de_pll_disable(struct drm_i915_private *dev_priv)
5418 I915_WRITE(BXT_DE_PLL_ENABLE, 0);
5421 if (intel_wait_for_register(dev_priv,
5422 BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 0,
5424 DRM_ERROR("timeout waiting for DE PLL unlock\n");
5426 dev_priv->cdclk_pll.vco = 0;
5429 static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
5431 int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk_pll.ref);
5434 val = I915_READ(BXT_DE_PLL_CTL);
5435 val &= ~BXT_DE_PLL_RATIO_MASK;
5436 val |= BXT_DE_PLL_RATIO(ratio);
5437 I915_WRITE(BXT_DE_PLL_CTL, val);
5439 I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
5442 if (intel_wait_for_register(dev_priv,
5447 DRM_ERROR("timeout waiting for DE PLL lock\n");
5449 dev_priv->cdclk_pll.vco = vco;
5452 static void bxt_set_cdclk(struct drm_i915_private *dev_priv, int cdclk)
5457 vco = bxt_de_pll_vco(dev_priv, cdclk);
5459 DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco);
5461 /* cdclk = vco / 2 / div{1,1.5,2,4} */
5462 switch (DIV_ROUND_CLOSEST(vco, cdclk)) {
5464 divider = BXT_CDCLK_CD2X_DIV_SEL_4;
5467 divider = BXT_CDCLK_CD2X_DIV_SEL_2;
5470 divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
5473 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5476 WARN_ON(cdclk != dev_priv->cdclk_pll.ref);
5479 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5483 /* Inform power controller of upcoming frequency change */
5484 mutex_lock(&dev_priv->rps.hw_lock);
5485 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5487 mutex_unlock(&dev_priv->rps.hw_lock);
5490 DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
5495 if (dev_priv->cdclk_pll.vco != 0 &&
5496 dev_priv->cdclk_pll.vco != vco)
5497 bxt_de_pll_disable(dev_priv);
5499 if (dev_priv->cdclk_pll.vco != vco)
5500 bxt_de_pll_enable(dev_priv, vco);
5502 val = divider | skl_cdclk_decimal(cdclk);
5504 * FIXME if only the cd2x divider needs changing, it could be done
5505 * without shutting off the pipe (if only one pipe is active).
5507 val |= BXT_CDCLK_CD2X_PIPE_NONE;
5509 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5512 if (cdclk >= 500000)
5513 val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5514 I915_WRITE(CDCLK_CTL, val);
5516 mutex_lock(&dev_priv->rps.hw_lock);
5517 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5518 DIV_ROUND_UP(cdclk, 25000));
5519 mutex_unlock(&dev_priv->rps.hw_lock);
5522 DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
5527 intel_update_cdclk(dev_priv->dev);
5530 static void bxt_sanitize_cdclk(struct drm_i915_private *dev_priv)
5532 u32 cdctl, expected;
5534 intel_update_cdclk(dev_priv->dev);
5536 if (dev_priv->cdclk_pll.vco == 0 ||
5537 dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref)
5540 /* DPLL okay; verify the cdclock
5542 * Some BIOS versions leave an incorrect decimal frequency value and
5543 * set reserved MBZ bits in CDCLK_CTL at least during exiting from S4,
5544 * so sanitize this register.
5546 cdctl = I915_READ(CDCLK_CTL);
5548 * Let's ignore the pipe field, since BIOS could have configured the
5549 * dividers both synching to an active pipe, or asynchronously
5552 cdctl &= ~BXT_CDCLK_CD2X_PIPE_NONE;
5554 expected = (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) |
5555 skl_cdclk_decimal(dev_priv->cdclk_freq);
5557 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5560 if (dev_priv->cdclk_freq >= 500000)
5561 expected |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5563 if (cdctl == expected)
5564 /* All well; nothing to sanitize */
5568 DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n");
5570 /* force cdclk programming */
5571 dev_priv->cdclk_freq = 0;
5573 /* force full PLL disable + enable */
5574 dev_priv->cdclk_pll.vco = -1;
5577 void bxt_init_cdclk(struct drm_i915_private *dev_priv)
5579 bxt_sanitize_cdclk(dev_priv);
5581 if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0)
5586 * - The initial CDCLK needs to be read from VBT.
5587 * Need to make this change after VBT has changes for BXT.
5589 bxt_set_cdclk(dev_priv, bxt_calc_cdclk(0));
5592 void bxt_uninit_cdclk(struct drm_i915_private *dev_priv)
5594 bxt_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref);
5597 static int skl_calc_cdclk(int max_pixclk, int vco)
5599 if (vco == 8640000) {
5600 if (max_pixclk > 540000)
5602 else if (max_pixclk > 432000)
5604 else if (max_pixclk > 308571)
5609 if (max_pixclk > 540000)
5611 else if (max_pixclk > 450000)
5613 else if (max_pixclk > 337500)
5621 skl_dpll0_update(struct drm_i915_private *dev_priv)
5625 dev_priv->cdclk_pll.ref = 24000;
5626 dev_priv->cdclk_pll.vco = 0;
5628 val = I915_READ(LCPLL1_CTL);
5629 if ((val & LCPLL_PLL_ENABLE) == 0)
5632 if (WARN_ON((val & LCPLL_PLL_LOCK) == 0))
5635 val = I915_READ(DPLL_CTRL1);
5637 if (WARN_ON((val & (DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) |
5638 DPLL_CTRL1_SSC(SKL_DPLL0) |
5639 DPLL_CTRL1_OVERRIDE(SKL_DPLL0))) !=
5640 DPLL_CTRL1_OVERRIDE(SKL_DPLL0)))
5643 switch (val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) {
5644 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, SKL_DPLL0):
5645 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, SKL_DPLL0):
5646 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, SKL_DPLL0):
5647 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, SKL_DPLL0):
5648 dev_priv->cdclk_pll.vco = 8100000;
5650 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, SKL_DPLL0):
5651 case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, SKL_DPLL0):
5652 dev_priv->cdclk_pll.vco = 8640000;
5655 MISSING_CASE(val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
5660 void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco)
5662 bool changed = dev_priv->skl_preferred_vco_freq != vco;
5664 dev_priv->skl_preferred_vco_freq = vco;
5667 intel_update_max_cdclk(dev_priv->dev);
5671 skl_dpll0_enable(struct drm_i915_private *dev_priv, int vco)
5673 int min_cdclk = skl_calc_cdclk(0, vco);
5676 WARN_ON(vco != 8100000 && vco != 8640000);
5678 /* select the minimum CDCLK before enabling DPLL 0 */
5679 val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_cdclk);
5680 I915_WRITE(CDCLK_CTL, val);
5681 POSTING_READ(CDCLK_CTL);
5684 * We always enable DPLL0 with the lowest link rate possible, but still
5685 * taking into account the VCO required to operate the eDP panel at the
5686 * desired frequency. The usual DP link rates operate with a VCO of
5687 * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
5688 * The modeset code is responsible for the selection of the exact link
5689 * rate later on, with the constraint of choosing a frequency that
5692 val = I915_READ(DPLL_CTRL1);
5694 val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) |
5695 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
5696 val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0);
5698 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080,
5701 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810,
5704 I915_WRITE(DPLL_CTRL1, val);
5705 POSTING_READ(DPLL_CTRL1);
5707 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
5709 if (intel_wait_for_register(dev_priv,
5710 LCPLL1_CTL, LCPLL_PLL_LOCK, LCPLL_PLL_LOCK,
5712 DRM_ERROR("DPLL0 not locked\n");
5714 dev_priv->cdclk_pll.vco = vco;
5716 /* We'll want to keep using the current vco from now on. */
5717 skl_set_preferred_cdclk_vco(dev_priv, vco);
5721 skl_dpll0_disable(struct drm_i915_private *dev_priv)
5723 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE);
5724 if (intel_wait_for_register(dev_priv,
5725 LCPLL1_CTL, LCPLL_PLL_LOCK, 0,
5727 DRM_ERROR("Couldn't disable DPLL0\n");
5729 dev_priv->cdclk_pll.vco = 0;
5732 static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
5737 /* inform PCU we want to change CDCLK */
5738 val = SKL_CDCLK_PREPARE_FOR_CHANGE;
5739 mutex_lock(&dev_priv->rps.hw_lock);
5740 ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val);
5741 mutex_unlock(&dev_priv->rps.hw_lock);
5743 return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE);
5746 static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
5750 for (i = 0; i < 15; i++) {
5751 if (skl_cdclk_pcu_ready(dev_priv))
5759 static void skl_set_cdclk(struct drm_i915_private *dev_priv, int cdclk, int vco)
5761 struct drm_device *dev = dev_priv->dev;
5762 u32 freq_select, pcu_ack;
5764 WARN_ON((cdclk == 24000) != (vco == 0));
5766 DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco);
5768 if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) {
5769 DRM_ERROR("failed to inform PCU about cdclk change\n");
5777 freq_select = CDCLK_FREQ_450_432;
5781 freq_select = CDCLK_FREQ_540;
5787 freq_select = CDCLK_FREQ_337_308;
5792 freq_select = CDCLK_FREQ_675_617;
5797 if (dev_priv->cdclk_pll.vco != 0 &&
5798 dev_priv->cdclk_pll.vco != vco)
5799 skl_dpll0_disable(dev_priv);
5801 if (dev_priv->cdclk_pll.vco != vco)
5802 skl_dpll0_enable(dev_priv, vco);
5804 I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(cdclk));
5805 POSTING_READ(CDCLK_CTL);
5807 /* inform PCU of the change */
5808 mutex_lock(&dev_priv->rps.hw_lock);
5809 sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
5810 mutex_unlock(&dev_priv->rps.hw_lock);
5812 intel_update_cdclk(dev);
5815 static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv);
5817 void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
5819 skl_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref, 0);
5822 void skl_init_cdclk(struct drm_i915_private *dev_priv)
5826 skl_sanitize_cdclk(dev_priv);
5828 if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0) {
5830 * Use the current vco as our initial
5831 * guess as to what the preferred vco is.
5833 if (dev_priv->skl_preferred_vco_freq == 0)
5834 skl_set_preferred_cdclk_vco(dev_priv,
5835 dev_priv->cdclk_pll.vco);
5839 vco = dev_priv->skl_preferred_vco_freq;
5842 cdclk = skl_calc_cdclk(0, vco);
5844 skl_set_cdclk(dev_priv, cdclk, vco);
5847 static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv)
5849 uint32_t cdctl, expected;
5852 * check if the pre-os intialized the display
5853 * There is SWF18 scratchpad register defined which is set by the
5854 * pre-os which can be used by the OS drivers to check the status
5856 if ((I915_READ(SWF_ILK(0x18)) & 0x00FFFFFF) == 0)
5859 intel_update_cdclk(dev_priv->dev);
5860 /* Is PLL enabled and locked ? */
5861 if (dev_priv->cdclk_pll.vco == 0 ||
5862 dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref)
5865 /* DPLL okay; verify the cdclock
5867 * Noticed in some instances that the freq selection is correct but
5868 * decimal part is programmed wrong from BIOS where pre-os does not
5869 * enable display. Verify the same as well.
5871 cdctl = I915_READ(CDCLK_CTL);
5872 expected = (cdctl & CDCLK_FREQ_SEL_MASK) |
5873 skl_cdclk_decimal(dev_priv->cdclk_freq);
5874 if (cdctl == expected)
5875 /* All well; nothing to sanitize */
5879 DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n");
5881 /* force cdclk programming */
5882 dev_priv->cdclk_freq = 0;
5883 /* force full PLL disable + enable */
5884 dev_priv->cdclk_pll.vco = -1;
5887 /* Adjust CDclk dividers to allow high res or save power if possible */
5888 static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
5890 struct drm_i915_private *dev_priv = dev->dev_private;
5893 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5894 != dev_priv->cdclk_freq);
5896 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
5898 else if (cdclk == 266667)
5903 mutex_lock(&dev_priv->rps.hw_lock);
5904 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5905 val &= ~DSPFREQGUAR_MASK;
5906 val |= (cmd << DSPFREQGUAR_SHIFT);
5907 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5908 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5909 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
5911 DRM_ERROR("timed out waiting for CDclk change\n");
5913 mutex_unlock(&dev_priv->rps.hw_lock);
5915 mutex_lock(&dev_priv->sb_lock);
5917 if (cdclk == 400000) {
5920 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5922 /* adjust cdclk divider */
5923 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
5924 val &= ~CCK_FREQUENCY_VALUES;
5926 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
5928 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
5929 CCK_FREQUENCY_STATUS) == (divider << CCK_FREQUENCY_STATUS_SHIFT),
5931 DRM_ERROR("timed out waiting for CDclk change\n");
5934 /* adjust self-refresh exit latency value */
5935 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
5939 * For high bandwidth configs, we set a higher latency in the bunit
5940 * so that the core display fetch happens in time to avoid underruns.
5942 if (cdclk == 400000)
5943 val |= 4500 / 250; /* 4.5 usec */
5945 val |= 3000 / 250; /* 3.0 usec */
5946 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
5948 mutex_unlock(&dev_priv->sb_lock);
5950 intel_update_cdclk(dev);
5953 static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
5955 struct drm_i915_private *dev_priv = dev->dev_private;
5958 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5959 != dev_priv->cdclk_freq);
5968 MISSING_CASE(cdclk);
5973 * Specs are full of misinformation, but testing on actual
5974 * hardware has shown that we just need to write the desired
5975 * CCK divider into the Punit register.
5977 cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5979 mutex_lock(&dev_priv->rps.hw_lock);
5980 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5981 val &= ~DSPFREQGUAR_MASK_CHV;
5982 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
5983 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5984 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5985 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
5987 DRM_ERROR("timed out waiting for CDclk change\n");
5989 mutex_unlock(&dev_priv->rps.hw_lock);
5991 intel_update_cdclk(dev);
5994 static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5997 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
5998 int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
6001 * Really only a few cases to deal with, as only 4 CDclks are supported:
6004 * 320/333MHz (depends on HPLL freq)
6006 * So we check to see whether we're above 90% (VLV) or 95% (CHV)
6007 * of the lower bin and adjust if needed.
6009 * We seem to get an unstable or solid color picture at 200MHz.
6010 * Not sure what's wrong. For now use 200MHz only when all pipes
6013 if (!IS_CHERRYVIEW(dev_priv) &&
6014 max_pixclk > freq_320*limit/100)
6016 else if (max_pixclk > 266667*limit/100)
6018 else if (max_pixclk > 0)
6024 static int bxt_calc_cdclk(int max_pixclk)
6026 if (max_pixclk > 576000)
6028 else if (max_pixclk > 384000)
6030 else if (max_pixclk > 288000)
6032 else if (max_pixclk > 144000)
6038 /* Compute the max pixel clock for new configuration. */
6039 static int intel_mode_max_pixclk(struct drm_device *dev,
6040 struct drm_atomic_state *state)
6042 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
6043 struct drm_i915_private *dev_priv = dev->dev_private;
6044 struct drm_crtc *crtc;
6045 struct drm_crtc_state *crtc_state;
6046 unsigned max_pixclk = 0, i;
6049 memcpy(intel_state->min_pixclk, dev_priv->min_pixclk,
6050 sizeof(intel_state->min_pixclk));
6052 for_each_crtc_in_state(state, crtc, crtc_state, i) {
6055 if (crtc_state->enable)
6056 pixclk = crtc_state->adjusted_mode.crtc_clock;
6058 intel_state->min_pixclk[i] = pixclk;
6061 for_each_pipe(dev_priv, pipe)
6062 max_pixclk = max(intel_state->min_pixclk[pipe], max_pixclk);
6067 static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
6069 struct drm_device *dev = state->dev;
6070 struct drm_i915_private *dev_priv = dev->dev_private;
6071 int max_pixclk = intel_mode_max_pixclk(dev, state);
6072 struct intel_atomic_state *intel_state =
6073 to_intel_atomic_state(state);
6075 intel_state->cdclk = intel_state->dev_cdclk =
6076 valleyview_calc_cdclk(dev_priv, max_pixclk);
6078 if (!intel_state->active_crtcs)
6079 intel_state->dev_cdclk = valleyview_calc_cdclk(dev_priv, 0);
6084 static int bxt_modeset_calc_cdclk(struct drm_atomic_state *state)
6086 int max_pixclk = ilk_max_pixel_rate(state);
6087 struct intel_atomic_state *intel_state =
6088 to_intel_atomic_state(state);
6090 intel_state->cdclk = intel_state->dev_cdclk =
6091 bxt_calc_cdclk(max_pixclk);
6093 if (!intel_state->active_crtcs)
6094 intel_state->dev_cdclk = bxt_calc_cdclk(0);
6099 static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
6101 unsigned int credits, default_credits;
6103 if (IS_CHERRYVIEW(dev_priv))
6104 default_credits = PFI_CREDIT(12);
6106 default_credits = PFI_CREDIT(8);
6108 if (dev_priv->cdclk_freq >= dev_priv->czclk_freq) {
6109 /* CHV suggested value is 31 or 63 */
6110 if (IS_CHERRYVIEW(dev_priv))
6111 credits = PFI_CREDIT_63;
6113 credits = PFI_CREDIT(15);
6115 credits = default_credits;
6119 * WA - write default credits before re-programming
6120 * FIXME: should we also set the resend bit here?
6122 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
6125 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
6126 credits | PFI_CREDIT_RESEND);
6129 * FIXME is this guaranteed to clear
6130 * immediately or should we poll for it?
6132 WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
6135 static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state)
6137 struct drm_device *dev = old_state->dev;
6138 struct drm_i915_private *dev_priv = dev->dev_private;
6139 struct intel_atomic_state *old_intel_state =
6140 to_intel_atomic_state(old_state);
6141 unsigned req_cdclk = old_intel_state->dev_cdclk;
6144 * FIXME: We can end up here with all power domains off, yet
6145 * with a CDCLK frequency other than the minimum. To account
6146 * for this take the PIPE-A power domain, which covers the HW
6147 * blocks needed for the following programming. This can be
6148 * removed once it's guaranteed that we get here either with
6149 * the minimum CDCLK set, or the required power domains
6152 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
6154 if (IS_CHERRYVIEW(dev))
6155 cherryview_set_cdclk(dev, req_cdclk);
6157 valleyview_set_cdclk(dev, req_cdclk);
6159 vlv_program_pfi_credits(dev_priv);
6161 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
6164 static void valleyview_crtc_enable(struct drm_crtc *crtc)
6166 struct drm_device *dev = crtc->dev;
6167 struct drm_i915_private *dev_priv = to_i915(dev);
6168 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6169 struct intel_encoder *encoder;
6170 struct intel_crtc_state *pipe_config =
6171 to_intel_crtc_state(crtc->state);
6172 int pipe = intel_crtc->pipe;
6174 if (WARN_ON(intel_crtc->active))
6177 if (intel_crtc->config->has_dp_encoder)
6178 intel_dp_set_m_n(intel_crtc, M1_N1);
6180 intel_set_pipe_timings(intel_crtc);
6181 intel_set_pipe_src_size(intel_crtc);
6183 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
6184 struct drm_i915_private *dev_priv = dev->dev_private;
6186 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
6187 I915_WRITE(CHV_CANVAS(pipe), 0);
6190 i9xx_set_pipeconf(intel_crtc);
6192 intel_crtc->active = true;
6194 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6196 for_each_encoder_on_crtc(dev, crtc, encoder)
6197 if (encoder->pre_pll_enable)
6198 encoder->pre_pll_enable(encoder);
6200 if (IS_CHERRYVIEW(dev)) {
6201 chv_prepare_pll(intel_crtc, intel_crtc->config);
6202 chv_enable_pll(intel_crtc, intel_crtc->config);
6204 vlv_prepare_pll(intel_crtc, intel_crtc->config);
6205 vlv_enable_pll(intel_crtc, intel_crtc->config);
6208 for_each_encoder_on_crtc(dev, crtc, encoder)
6209 if (encoder->pre_enable)
6210 encoder->pre_enable(encoder);
6212 i9xx_pfit_enable(intel_crtc);
6214 intel_color_load_luts(&pipe_config->base);
6216 intel_update_watermarks(crtc);
6217 intel_enable_pipe(intel_crtc);
6219 assert_vblank_disabled(crtc);
6220 drm_crtc_vblank_on(crtc);
6222 for_each_encoder_on_crtc(dev, crtc, encoder)
6223 encoder->enable(encoder);
6226 static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
6228 struct drm_device *dev = crtc->base.dev;
6229 struct drm_i915_private *dev_priv = dev->dev_private;
6231 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
6232 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
6235 static void i9xx_crtc_enable(struct drm_crtc *crtc)
6237 struct drm_device *dev = crtc->dev;
6238 struct drm_i915_private *dev_priv = to_i915(dev);
6239 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6240 struct intel_encoder *encoder;
6241 struct intel_crtc_state *pipe_config =
6242 to_intel_crtc_state(crtc->state);
6243 enum pipe pipe = intel_crtc->pipe;
6245 if (WARN_ON(intel_crtc->active))
6248 i9xx_set_pll_dividers(intel_crtc);
6250 if (intel_crtc->config->has_dp_encoder)
6251 intel_dp_set_m_n(intel_crtc, M1_N1);
6253 intel_set_pipe_timings(intel_crtc);
6254 intel_set_pipe_src_size(intel_crtc);
6256 i9xx_set_pipeconf(intel_crtc);
6258 intel_crtc->active = true;
6261 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6263 for_each_encoder_on_crtc(dev, crtc, encoder)
6264 if (encoder->pre_enable)
6265 encoder->pre_enable(encoder);
6267 i9xx_enable_pll(intel_crtc);
6269 i9xx_pfit_enable(intel_crtc);
6271 intel_color_load_luts(&pipe_config->base);
6273 intel_update_watermarks(crtc);
6274 intel_enable_pipe(intel_crtc);
6276 assert_vblank_disabled(crtc);
6277 drm_crtc_vblank_on(crtc);
6279 for_each_encoder_on_crtc(dev, crtc, encoder)
6280 encoder->enable(encoder);
6283 static void i9xx_pfit_disable(struct intel_crtc *crtc)
6285 struct drm_device *dev = crtc->base.dev;
6286 struct drm_i915_private *dev_priv = dev->dev_private;
6288 if (!crtc->config->gmch_pfit.control)
6291 assert_pipe_disabled(dev_priv, crtc->pipe);
6293 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
6294 I915_READ(PFIT_CONTROL));
6295 I915_WRITE(PFIT_CONTROL, 0);
6298 static void i9xx_crtc_disable(struct drm_crtc *crtc)
6300 struct drm_device *dev = crtc->dev;
6301 struct drm_i915_private *dev_priv = dev->dev_private;
6302 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6303 struct intel_encoder *encoder;
6304 int pipe = intel_crtc->pipe;
6307 * On gen2 planes are double buffered but the pipe isn't, so we must
6308 * wait for planes to fully turn off before disabling the pipe.
6311 intel_wait_for_vblank(dev, pipe);
6313 for_each_encoder_on_crtc(dev, crtc, encoder)
6314 encoder->disable(encoder);
6316 drm_crtc_vblank_off(crtc);
6317 assert_vblank_disabled(crtc);
6319 intel_disable_pipe(intel_crtc);
6321 i9xx_pfit_disable(intel_crtc);
6323 for_each_encoder_on_crtc(dev, crtc, encoder)
6324 if (encoder->post_disable)
6325 encoder->post_disable(encoder);
6327 if (!intel_crtc->config->has_dsi_encoder) {
6328 if (IS_CHERRYVIEW(dev))
6329 chv_disable_pll(dev_priv, pipe);
6330 else if (IS_VALLEYVIEW(dev))
6331 vlv_disable_pll(dev_priv, pipe);
6333 i9xx_disable_pll(intel_crtc);
6336 for_each_encoder_on_crtc(dev, crtc, encoder)
6337 if (encoder->post_pll_disable)
6338 encoder->post_pll_disable(encoder);
6341 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6344 static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
6346 struct intel_encoder *encoder;
6347 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6348 struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6349 enum intel_display_power_domain domain;
6350 unsigned long domains;
6352 if (!intel_crtc->active)
6355 if (to_intel_plane_state(crtc->primary->state)->visible) {
6356 WARN_ON(intel_crtc->flip_work);
6358 intel_pre_disable_primary_noatomic(crtc);
6360 intel_crtc_disable_planes(crtc, 1 << drm_plane_index(crtc->primary));
6361 to_intel_plane_state(crtc->primary->state)->visible = false;
6364 dev_priv->display.crtc_disable(crtc);
6366 DRM_DEBUG_KMS("[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
6367 crtc->base.id, crtc->name);
6369 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->state, NULL) < 0);
6370 crtc->state->active = false;
6371 intel_crtc->active = false;
6372 crtc->enabled = false;
6373 crtc->state->connector_mask = 0;
6374 crtc->state->encoder_mask = 0;
6376 for_each_encoder_on_crtc(crtc->dev, crtc, encoder)
6377 encoder->base.crtc = NULL;
6379 intel_fbc_disable(intel_crtc);
6380 intel_update_watermarks(crtc);
6381 intel_disable_shared_dpll(intel_crtc);
6383 domains = intel_crtc->enabled_power_domains;
6384 for_each_power_domain(domain, domains)
6385 intel_display_power_put(dev_priv, domain);
6386 intel_crtc->enabled_power_domains = 0;
6388 dev_priv->active_crtcs &= ~(1 << intel_crtc->pipe);
6389 dev_priv->min_pixclk[intel_crtc->pipe] = 0;
6393 * turn all crtc's off, but do not adjust state
6394 * This has to be paired with a call to intel_modeset_setup_hw_state.
6396 int intel_display_suspend(struct drm_device *dev)
6398 struct drm_i915_private *dev_priv = to_i915(dev);
6399 struct drm_atomic_state *state;
6402 state = drm_atomic_helper_suspend(dev);
6403 ret = PTR_ERR_OR_ZERO(state);
6405 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
6407 dev_priv->modeset_restore_state = state;
6411 void intel_encoder_destroy(struct drm_encoder *encoder)
6413 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6415 drm_encoder_cleanup(encoder);
6416 kfree(intel_encoder);
6419 /* Cross check the actual hw state with our own modeset state tracking (and it's
6420 * internal consistency). */
6421 static void intel_connector_verify_state(struct intel_connector *connector)
6423 struct drm_crtc *crtc = connector->base.state->crtc;
6425 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6426 connector->base.base.id,
6427 connector->base.name);
6429 if (connector->get_hw_state(connector)) {
6430 struct intel_encoder *encoder = connector->encoder;
6431 struct drm_connector_state *conn_state = connector->base.state;
6433 I915_STATE_WARN(!crtc,
6434 "connector enabled without attached crtc\n");
6439 I915_STATE_WARN(!crtc->state->active,
6440 "connector is active, but attached crtc isn't\n");
6442 if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
6445 I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
6446 "atomic encoder doesn't match attached encoder\n");
6448 I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
6449 "attached encoder crtc differs from connector crtc\n");
6451 I915_STATE_WARN(crtc && crtc->state->active,
6452 "attached crtc is active, but connector isn't\n");
6453 I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
6454 "best encoder set without crtc!\n");
6458 int intel_connector_init(struct intel_connector *connector)
6460 drm_atomic_helper_connector_reset(&connector->base);
6462 if (!connector->base.state)
6468 struct intel_connector *intel_connector_alloc(void)
6470 struct intel_connector *connector;
6472 connector = kzalloc(sizeof *connector, GFP_KERNEL);
6476 if (intel_connector_init(connector) < 0) {
6484 /* Simple connector->get_hw_state implementation for encoders that support only
6485 * one connector and no cloning and hence the encoder state determines the state
6486 * of the connector. */
6487 bool intel_connector_get_hw_state(struct intel_connector *connector)
6490 struct intel_encoder *encoder = connector->encoder;
6492 return encoder->get_hw_state(encoder, &pipe);
6495 static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
6497 if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6498 return crtc_state->fdi_lanes;
6503 static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
6504 struct intel_crtc_state *pipe_config)
6506 struct drm_atomic_state *state = pipe_config->base.state;
6507 struct intel_crtc *other_crtc;
6508 struct intel_crtc_state *other_crtc_state;
6510 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6511 pipe_name(pipe), pipe_config->fdi_lanes);
6512 if (pipe_config->fdi_lanes > 4) {
6513 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6514 pipe_name(pipe), pipe_config->fdi_lanes);
6518 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
6519 if (pipe_config->fdi_lanes > 2) {
6520 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6521 pipe_config->fdi_lanes);
6528 if (INTEL_INFO(dev)->num_pipes == 2)
6531 /* Ivybridge 3 pipe is really complicated */
6536 if (pipe_config->fdi_lanes <= 2)
6539 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
6541 intel_atomic_get_crtc_state(state, other_crtc);
6542 if (IS_ERR(other_crtc_state))
6543 return PTR_ERR(other_crtc_state);
6545 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
6546 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6547 pipe_name(pipe), pipe_config->fdi_lanes);
6552 if (pipe_config->fdi_lanes > 2) {
6553 DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6554 pipe_name(pipe), pipe_config->fdi_lanes);
6558 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
6560 intel_atomic_get_crtc_state(state, other_crtc);
6561 if (IS_ERR(other_crtc_state))
6562 return PTR_ERR(other_crtc_state);
6564 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
6565 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6575 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
6576 struct intel_crtc_state *pipe_config)
6578 struct drm_device *dev = intel_crtc->base.dev;
6579 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6580 int lane, link_bw, fdi_dotclock, ret;
6581 bool needs_recompute = false;
6584 /* FDI is a binary signal running at ~2.7GHz, encoding
6585 * each output octet as 10 bits. The actual frequency
6586 * is stored as a divider into a 100MHz clock, and the
6587 * mode pixel clock is stored in units of 1KHz.
6588 * Hence the bw of each lane in terms of the mode signal
6591 link_bw = intel_fdi_link_freq(to_i915(dev), pipe_config);
6593 fdi_dotclock = adjusted_mode->crtc_clock;
6595 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
6596 pipe_config->pipe_bpp);
6598 pipe_config->fdi_lanes = lane;
6600 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
6601 link_bw, &pipe_config->fdi_m_n);
6603 ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config);
6604 if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
6605 pipe_config->pipe_bpp -= 2*3;
6606 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6607 pipe_config->pipe_bpp);
6608 needs_recompute = true;
6609 pipe_config->bw_constrained = true;
6614 if (needs_recompute)
6620 static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv,
6621 struct intel_crtc_state *pipe_config)
6623 if (pipe_config->pipe_bpp > 24)
6626 /* HSW can handle pixel rate up to cdclk? */
6627 if (IS_HASWELL(dev_priv))
6631 * We compare against max which means we must take
6632 * the increased cdclk requirement into account when
6633 * calculating the new cdclk.
6635 * Should measure whether using a lower cdclk w/o IPS
6637 return ilk_pipe_pixel_rate(pipe_config) <=
6638 dev_priv->max_cdclk_freq * 95 / 100;
6641 static void hsw_compute_ips_config(struct intel_crtc *crtc,
6642 struct intel_crtc_state *pipe_config)
6644 struct drm_device *dev = crtc->base.dev;
6645 struct drm_i915_private *dev_priv = dev->dev_private;
6647 pipe_config->ips_enabled = i915.enable_ips &&
6648 hsw_crtc_supports_ips(crtc) &&
6649 pipe_config_supports_ips(dev_priv, pipe_config);
6652 static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
6654 const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6656 /* GDG double wide on either pipe, otherwise pipe A only */
6657 return INTEL_INFO(dev_priv)->gen < 4 &&
6658 (crtc->pipe == PIPE_A || IS_I915G(dev_priv));
6661 static int intel_crtc_compute_config(struct intel_crtc *crtc,
6662 struct intel_crtc_state *pipe_config)
6664 struct drm_device *dev = crtc->base.dev;
6665 struct drm_i915_private *dev_priv = dev->dev_private;
6666 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6667 int clock_limit = dev_priv->max_dotclk_freq;
6669 if (INTEL_INFO(dev)->gen < 4) {
6670 clock_limit = dev_priv->max_cdclk_freq * 9 / 10;
6673 * Enable double wide mode when the dot clock
6674 * is > 90% of the (display) core speed.
6676 if (intel_crtc_supports_double_wide(crtc) &&
6677 adjusted_mode->crtc_clock > clock_limit) {
6678 clock_limit = dev_priv->max_dotclk_freq;
6679 pipe_config->double_wide = true;
6683 if (adjusted_mode->crtc_clock > clock_limit) {
6684 DRM_DEBUG_KMS("requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
6685 adjusted_mode->crtc_clock, clock_limit,
6686 yesno(pipe_config->double_wide));
6691 * Pipe horizontal size must be even in:
6693 * - LVDS dual channel mode
6694 * - Double wide pipe
6696 if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
6697 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
6698 pipe_config->pipe_src_w &= ~1;
6700 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
6701 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
6703 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
6704 adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay)
6708 hsw_compute_ips_config(crtc, pipe_config);
6710 if (pipe_config->has_pch_encoder)
6711 return ironlake_fdi_compute_config(crtc, pipe_config);
6716 static int skylake_get_display_clock_speed(struct drm_device *dev)
6718 struct drm_i915_private *dev_priv = to_i915(dev);
6721 skl_dpll0_update(dev_priv);
6723 if (dev_priv->cdclk_pll.vco == 0)
6724 return dev_priv->cdclk_pll.ref;
6726 cdctl = I915_READ(CDCLK_CTL);
6728 if (dev_priv->cdclk_pll.vco == 8640000) {
6729 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6730 case CDCLK_FREQ_450_432:
6732 case CDCLK_FREQ_337_308:
6734 case CDCLK_FREQ_540:
6736 case CDCLK_FREQ_675_617:
6739 MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
6742 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6743 case CDCLK_FREQ_450_432:
6745 case CDCLK_FREQ_337_308:
6747 case CDCLK_FREQ_540:
6749 case CDCLK_FREQ_675_617:
6752 MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
6756 return dev_priv->cdclk_pll.ref;
6759 static void bxt_de_pll_update(struct drm_i915_private *dev_priv)
6763 dev_priv->cdclk_pll.ref = 19200;
6764 dev_priv->cdclk_pll.vco = 0;
6766 val = I915_READ(BXT_DE_PLL_ENABLE);
6767 if ((val & BXT_DE_PLL_PLL_ENABLE) == 0)
6770 if (WARN_ON((val & BXT_DE_PLL_LOCK) == 0))
6773 val = I915_READ(BXT_DE_PLL_CTL);
6774 dev_priv->cdclk_pll.vco = (val & BXT_DE_PLL_RATIO_MASK) *
6775 dev_priv->cdclk_pll.ref;
6778 static int broxton_get_display_clock_speed(struct drm_device *dev)
6780 struct drm_i915_private *dev_priv = to_i915(dev);
6784 bxt_de_pll_update(dev_priv);
6786 vco = dev_priv->cdclk_pll.vco;
6788 return dev_priv->cdclk_pll.ref;
6790 divider = I915_READ(CDCLK_CTL) & BXT_CDCLK_CD2X_DIV_SEL_MASK;
6793 case BXT_CDCLK_CD2X_DIV_SEL_1:
6796 case BXT_CDCLK_CD2X_DIV_SEL_1_5:
6799 case BXT_CDCLK_CD2X_DIV_SEL_2:
6802 case BXT_CDCLK_CD2X_DIV_SEL_4:
6806 MISSING_CASE(divider);
6807 return dev_priv->cdclk_pll.ref;
6810 return DIV_ROUND_CLOSEST(vco, div);
6813 static int broadwell_get_display_clock_speed(struct drm_device *dev)
6815 struct drm_i915_private *dev_priv = dev->dev_private;
6816 uint32_t lcpll = I915_READ(LCPLL_CTL);
6817 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6819 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6821 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6823 else if (freq == LCPLL_CLK_FREQ_450)
6825 else if (freq == LCPLL_CLK_FREQ_54O_BDW)
6827 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
6833 static int haswell_get_display_clock_speed(struct drm_device *dev)
6835 struct drm_i915_private *dev_priv = dev->dev_private;
6836 uint32_t lcpll = I915_READ(LCPLL_CTL);
6837 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6839 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6841 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6843 else if (freq == LCPLL_CLK_FREQ_450)
6845 else if (IS_HSW_ULT(dev))
6851 static int valleyview_get_display_clock_speed(struct drm_device *dev)
6853 return vlv_get_cck_clock_hpll(to_i915(dev), "cdclk",
6854 CCK_DISPLAY_CLOCK_CONTROL);
6857 static int ilk_get_display_clock_speed(struct drm_device *dev)
6862 static int i945_get_display_clock_speed(struct drm_device *dev)
6867 static int i915_get_display_clock_speed(struct drm_device *dev)
6872 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
6877 static int pnv_get_display_clock_speed(struct drm_device *dev)
6881 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6883 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6884 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
6886 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
6888 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
6890 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
6893 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
6894 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
6896 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
6901 static int i915gm_get_display_clock_speed(struct drm_device *dev)
6905 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6907 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
6910 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6911 case GC_DISPLAY_CLOCK_333_MHZ:
6914 case GC_DISPLAY_CLOCK_190_200_MHZ:
6920 static int i865_get_display_clock_speed(struct drm_device *dev)
6925 static int i85x_get_display_clock_speed(struct drm_device *dev)
6930 * 852GM/852GMV only supports 133 MHz and the HPLLCC
6931 * encoding is different :(
6932 * FIXME is this the right way to detect 852GM/852GMV?
6934 if (dev->pdev->revision == 0x1)
6937 pci_bus_read_config_word(dev->pdev->bus,
6938 PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
6940 /* Assume that the hardware is in the high speed state. This
6941 * should be the default.
6943 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
6944 case GC_CLOCK_133_200:
6945 case GC_CLOCK_133_200_2:
6946 case GC_CLOCK_100_200:
6948 case GC_CLOCK_166_250:
6950 case GC_CLOCK_100_133:
6952 case GC_CLOCK_133_266:
6953 case GC_CLOCK_133_266_2:
6954 case GC_CLOCK_166_266:
6958 /* Shouldn't happen */
6962 static int i830_get_display_clock_speed(struct drm_device *dev)
6967 static unsigned int intel_hpll_vco(struct drm_device *dev)
6969 struct drm_i915_private *dev_priv = dev->dev_private;
6970 static const unsigned int blb_vco[8] = {
6977 static const unsigned int pnv_vco[8] = {
6984 static const unsigned int cl_vco[8] = {
6993 static const unsigned int elk_vco[8] = {
6999 static const unsigned int ctg_vco[8] = {
7007 const unsigned int *vco_table;
7011 /* FIXME other chipsets? */
7013 vco_table = ctg_vco;
7014 else if (IS_G4X(dev))
7015 vco_table = elk_vco;
7016 else if (IS_CRESTLINE(dev))
7018 else if (IS_PINEVIEW(dev))
7019 vco_table = pnv_vco;
7020 else if (IS_G33(dev))
7021 vco_table = blb_vco;
7025 tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO);
7027 vco = vco_table[tmp & 0x7];
7029 DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp);
7031 DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco);
7036 static int gm45_get_display_clock_speed(struct drm_device *dev)
7038 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
7041 pci_read_config_word(dev->pdev, GCFGC, &tmp);
7043 cdclk_sel = (tmp >> 12) & 0x1;
7049 return cdclk_sel ? 333333 : 222222;
7051 return cdclk_sel ? 320000 : 228571;
7053 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp);
7058 static int i965gm_get_display_clock_speed(struct drm_device *dev)
7060 static const uint8_t div_3200[] = { 16, 10, 8 };
7061 static const uint8_t div_4000[] = { 20, 12, 10 };
7062 static const uint8_t div_5333[] = { 24, 16, 14 };
7063 const uint8_t *div_table;
7064 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
7067 pci_read_config_word(dev->pdev, GCFGC, &tmp);
7069 cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
7071 if (cdclk_sel >= ARRAY_SIZE(div_3200))
7076 div_table = div_3200;
7079 div_table = div_4000;
7082 div_table = div_5333;
7088 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
7091 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp);
7095 static int g33_get_display_clock_speed(struct drm_device *dev)
7097 static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 };
7098 static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 };
7099 static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 };
7100 static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 };
7101 const uint8_t *div_table;
7102 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
7105 pci_read_config_word(dev->pdev, GCFGC, &tmp);
7107 cdclk_sel = (tmp >> 4) & 0x7;
7109 if (cdclk_sel >= ARRAY_SIZE(div_3200))
7114 div_table = div_3200;
7117 div_table = div_4000;
7120 div_table = div_4800;
7123 div_table = div_5333;
7129 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
7132 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp);
7137 intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
7139 while (*num > DATA_LINK_M_N_MASK ||
7140 *den > DATA_LINK_M_N_MASK) {
7146 static void compute_m_n(unsigned int m, unsigned int n,
7147 uint32_t *ret_m, uint32_t *ret_n)
7149 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
7150 *ret_m = div_u64((uint64_t) m * *ret_n, n);
7151 intel_reduce_m_n_ratio(ret_m, ret_n);
7155 intel_link_compute_m_n(int bits_per_pixel, int nlanes,
7156 int pixel_clock, int link_clock,
7157 struct intel_link_m_n *m_n)
7161 compute_m_n(bits_per_pixel * pixel_clock,
7162 link_clock * nlanes * 8,
7163 &m_n->gmch_m, &m_n->gmch_n);
7165 compute_m_n(pixel_clock, link_clock,
7166 &m_n->link_m, &m_n->link_n);
7169 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
7171 if (i915.panel_use_ssc >= 0)
7172 return i915.panel_use_ssc != 0;
7173 return dev_priv->vbt.lvds_use_ssc
7174 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
7177 static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
7179 return (1 << dpll->n) << 16 | dpll->m2;
7182 static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
7184 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
7187 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
7188 struct intel_crtc_state *crtc_state,
7189 struct dpll *reduced_clock)
7191 struct drm_device *dev = crtc->base.dev;
7194 if (IS_PINEVIEW(dev)) {
7195 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
7197 fp2 = pnv_dpll_compute_fp(reduced_clock);
7199 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7201 fp2 = i9xx_dpll_compute_fp(reduced_clock);
7204 crtc_state->dpll_hw_state.fp0 = fp;
7206 crtc->lowfreq_avail = false;
7207 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7209 crtc_state->dpll_hw_state.fp1 = fp2;
7210 crtc->lowfreq_avail = true;
7212 crtc_state->dpll_hw_state.fp1 = fp;
7216 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
7222 * PLLB opamp always calibrates to max value of 0x3f, force enable it
7223 * and set it to a reasonable value instead.
7225 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7226 reg_val &= 0xffffff00;
7227 reg_val |= 0x00000030;
7228 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7230 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7231 reg_val &= 0x8cffffff;
7232 reg_val = 0x8c000000;
7233 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7235 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7236 reg_val &= 0xffffff00;
7237 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7239 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7240 reg_val &= 0x00ffffff;
7241 reg_val |= 0xb0000000;
7242 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7245 static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
7246 struct intel_link_m_n *m_n)
7248 struct drm_device *dev = crtc->base.dev;
7249 struct drm_i915_private *dev_priv = dev->dev_private;
7250 int pipe = crtc->pipe;
7252 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7253 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
7254 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
7255 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
7258 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
7259 struct intel_link_m_n *m_n,
7260 struct intel_link_m_n *m2_n2)
7262 struct drm_device *dev = crtc->base.dev;
7263 struct drm_i915_private *dev_priv = dev->dev_private;
7264 int pipe = crtc->pipe;
7265 enum transcoder transcoder = crtc->config->cpu_transcoder;
7267 if (INTEL_INFO(dev)->gen >= 5) {
7268 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
7269 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
7270 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
7271 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
7272 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
7273 * for gen < 8) and if DRRS is supported (to make sure the
7274 * registers are not unnecessarily accessed).
7276 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
7277 crtc->config->has_drrs) {
7278 I915_WRITE(PIPE_DATA_M2(transcoder),
7279 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
7280 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
7281 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
7282 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
7285 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7286 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
7287 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
7288 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
7292 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
7294 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
7297 dp_m_n = &crtc->config->dp_m_n;
7298 dp_m2_n2 = &crtc->config->dp_m2_n2;
7299 } else if (m_n == M2_N2) {
7302 * M2_N2 registers are not supported. Hence m2_n2 divider value
7303 * needs to be programmed into M1_N1.
7305 dp_m_n = &crtc->config->dp_m2_n2;
7307 DRM_ERROR("Unsupported divider value\n");
7311 if (crtc->config->has_pch_encoder)
7312 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
7314 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
7317 static void vlv_compute_dpll(struct intel_crtc *crtc,
7318 struct intel_crtc_state *pipe_config)
7320 pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
7321 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
7322 if (crtc->pipe != PIPE_A)
7323 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7325 /* DPLL not used with DSI, but still need the rest set up */
7326 if (!pipe_config->has_dsi_encoder)
7327 pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
7328 DPLL_EXT_BUFFER_ENABLE_VLV;
7330 pipe_config->dpll_hw_state.dpll_md =
7331 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7334 static void chv_compute_dpll(struct intel_crtc *crtc,
7335 struct intel_crtc_state *pipe_config)
7337 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
7338 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
7339 if (crtc->pipe != PIPE_A)
7340 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7342 /* DPLL not used with DSI, but still need the rest set up */
7343 if (!pipe_config->has_dsi_encoder)
7344 pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
7346 pipe_config->dpll_hw_state.dpll_md =
7347 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7350 static void vlv_prepare_pll(struct intel_crtc *crtc,
7351 const struct intel_crtc_state *pipe_config)
7353 struct drm_device *dev = crtc->base.dev;
7354 struct drm_i915_private *dev_priv = dev->dev_private;
7355 enum pipe pipe = crtc->pipe;
7357 u32 bestn, bestm1, bestm2, bestp1, bestp2;
7358 u32 coreclk, reg_val;
7361 I915_WRITE(DPLL(pipe),
7362 pipe_config->dpll_hw_state.dpll &
7363 ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
7365 /* No need to actually set up the DPLL with DSI */
7366 if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
7369 mutex_lock(&dev_priv->sb_lock);
7371 bestn = pipe_config->dpll.n;
7372 bestm1 = pipe_config->dpll.m1;
7373 bestm2 = pipe_config->dpll.m2;
7374 bestp1 = pipe_config->dpll.p1;
7375 bestp2 = pipe_config->dpll.p2;
7377 /* See eDP HDMI DPIO driver vbios notes doc */
7379 /* PLL B needs special handling */
7381 vlv_pllb_recal_opamp(dev_priv, pipe);
7383 /* Set up Tx target for periodic Rcomp update */
7384 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
7386 /* Disable target IRef on PLL */
7387 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
7388 reg_val &= 0x00ffffff;
7389 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
7391 /* Disable fast lock */
7392 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
7394 /* Set idtafcrecal before PLL is enabled */
7395 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
7396 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
7397 mdiv |= ((bestn << DPIO_N_SHIFT));
7398 mdiv |= (1 << DPIO_K_SHIFT);
7401 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
7402 * but we don't support that).
7403 * Note: don't use the DAC post divider as it seems unstable.
7405 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
7406 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7408 mdiv |= DPIO_ENABLE_CALIBRATION;
7409 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7411 /* Set HBR and RBR LPF coefficients */
7412 if (pipe_config->port_clock == 162000 ||
7413 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
7414 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
7415 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7418 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7421 if (pipe_config->has_dp_encoder) {
7422 /* Use SSC source */
7424 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7427 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7429 } else { /* HDMI or VGA */
7430 /* Use bend source */
7432 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7435 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7439 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
7440 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
7441 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
7442 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
7443 coreclk |= 0x01000000;
7444 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
7446 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
7447 mutex_unlock(&dev_priv->sb_lock);
7450 static void chv_prepare_pll(struct intel_crtc *crtc,
7451 const struct intel_crtc_state *pipe_config)
7453 struct drm_device *dev = crtc->base.dev;
7454 struct drm_i915_private *dev_priv = dev->dev_private;
7455 enum pipe pipe = crtc->pipe;
7456 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7457 u32 loopfilter, tribuf_calcntr;
7458 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
7462 /* Enable Refclk and SSC */
7463 I915_WRITE(DPLL(pipe),
7464 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
7466 /* No need to actually set up the DPLL with DSI */
7467 if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
7470 bestn = pipe_config->dpll.n;
7471 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7472 bestm1 = pipe_config->dpll.m1;
7473 bestm2 = pipe_config->dpll.m2 >> 22;
7474 bestp1 = pipe_config->dpll.p1;
7475 bestp2 = pipe_config->dpll.p2;
7476 vco = pipe_config->dpll.vco;
7480 mutex_lock(&dev_priv->sb_lock);
7482 /* p1 and p2 divider */
7483 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7484 5 << DPIO_CHV_S1_DIV_SHIFT |
7485 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7486 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7487 1 << DPIO_CHV_K_DIV_SHIFT);
7489 /* Feedback post-divider - m2 */
7490 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7492 /* Feedback refclk divider - n and m1 */
7493 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7494 DPIO_CHV_M1_DIV_BY_2 |
7495 1 << DPIO_CHV_N_DIV_SHIFT);
7497 /* M2 fraction division */
7498 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
7500 /* M2 fraction division enable */
7501 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7502 dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7503 dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7505 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7506 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
7508 /* Program digital lock detect threshold */
7509 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7510 dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7511 DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7512 dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7514 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7515 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7518 if (vco == 5400000) {
7519 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7520 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7521 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7522 tribuf_calcntr = 0x9;
7523 } else if (vco <= 6200000) {
7524 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7525 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7526 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7527 tribuf_calcntr = 0x9;
7528 } else if (vco <= 6480000) {
7529 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7530 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7531 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7532 tribuf_calcntr = 0x8;
7534 /* Not supported. Apply the same limits as in the max case */
7535 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7536 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7537 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7540 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7542 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
7543 dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7544 dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7545 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7548 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7549 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7552 mutex_unlock(&dev_priv->sb_lock);
7556 * vlv_force_pll_on - forcibly enable just the PLL
7557 * @dev_priv: i915 private structure
7558 * @pipe: pipe PLL to enable
7559 * @dpll: PLL configuration
7561 * Enable the PLL for @pipe using the supplied @dpll config. To be used
7562 * in cases where we need the PLL enabled even when @pipe is not going to
7565 int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
7566 const struct dpll *dpll)
7568 struct intel_crtc *crtc =
7569 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
7570 struct intel_crtc_state *pipe_config;
7572 pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
7576 pipe_config->base.crtc = &crtc->base;
7577 pipe_config->pixel_multiplier = 1;
7578 pipe_config->dpll = *dpll;
7580 if (IS_CHERRYVIEW(dev)) {
7581 chv_compute_dpll(crtc, pipe_config);
7582 chv_prepare_pll(crtc, pipe_config);
7583 chv_enable_pll(crtc, pipe_config);
7585 vlv_compute_dpll(crtc, pipe_config);
7586 vlv_prepare_pll(crtc, pipe_config);
7587 vlv_enable_pll(crtc, pipe_config);
7596 * vlv_force_pll_off - forcibly disable just the PLL
7597 * @dev_priv: i915 private structure
7598 * @pipe: pipe PLL to disable
7600 * Disable the PLL for @pipe. To be used in cases where we need
7601 * the PLL enabled even when @pipe is not going to be enabled.
7603 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
7605 if (IS_CHERRYVIEW(dev))
7606 chv_disable_pll(to_i915(dev), pipe);
7608 vlv_disable_pll(to_i915(dev), pipe);
7611 static void i9xx_compute_dpll(struct intel_crtc *crtc,
7612 struct intel_crtc_state *crtc_state,
7613 struct dpll *reduced_clock)
7615 struct drm_device *dev = crtc->base.dev;
7616 struct drm_i915_private *dev_priv = dev->dev_private;
7619 struct dpll *clock = &crtc_state->dpll;
7621 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7623 is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7624 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
7626 dpll = DPLL_VGA_MODE_DIS;
7628 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
7629 dpll |= DPLLB_MODE_LVDS;
7631 dpll |= DPLLB_MODE_DAC_SERIAL;
7633 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
7634 dpll |= (crtc_state->pixel_multiplier - 1)
7635 << SDVO_MULTIPLIER_SHIFT_HIRES;
7639 dpll |= DPLL_SDVO_HIGH_SPEED;
7641 if (crtc_state->has_dp_encoder)
7642 dpll |= DPLL_SDVO_HIGH_SPEED;
7644 /* compute bitmask from p1 value */
7645 if (IS_PINEVIEW(dev))
7646 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7648 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7649 if (IS_G4X(dev) && reduced_clock)
7650 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7652 switch (clock->p2) {
7654 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7657 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7660 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7663 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7666 if (INTEL_INFO(dev)->gen >= 4)
7667 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7669 if (crtc_state->sdvo_tv_clock)
7670 dpll |= PLL_REF_INPUT_TVCLKINBC;
7671 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7672 intel_panel_use_ssc(dev_priv))
7673 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7675 dpll |= PLL_REF_INPUT_DREFCLK;
7677 dpll |= DPLL_VCO_ENABLE;
7678 crtc_state->dpll_hw_state.dpll = dpll;
7680 if (INTEL_INFO(dev)->gen >= 4) {
7681 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
7682 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7683 crtc_state->dpll_hw_state.dpll_md = dpll_md;
7687 static void i8xx_compute_dpll(struct intel_crtc *crtc,
7688 struct intel_crtc_state *crtc_state,
7689 struct dpll *reduced_clock)
7691 struct drm_device *dev = crtc->base.dev;
7692 struct drm_i915_private *dev_priv = dev->dev_private;
7694 struct dpll *clock = &crtc_state->dpll;
7696 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7698 dpll = DPLL_VGA_MODE_DIS;
7700 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7701 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7704 dpll |= PLL_P1_DIVIDE_BY_TWO;
7706 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7708 dpll |= PLL_P2_DIVIDE_BY_4;
7711 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
7712 dpll |= DPLL_DVO_2X_MODE;
7714 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7715 intel_panel_use_ssc(dev_priv))
7716 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7718 dpll |= PLL_REF_INPUT_DREFCLK;
7720 dpll |= DPLL_VCO_ENABLE;
7721 crtc_state->dpll_hw_state.dpll = dpll;
7724 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
7726 struct drm_device *dev = intel_crtc->base.dev;
7727 struct drm_i915_private *dev_priv = dev->dev_private;
7728 enum pipe pipe = intel_crtc->pipe;
7729 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
7730 const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
7731 uint32_t crtc_vtotal, crtc_vblank_end;
7734 /* We need to be careful not to changed the adjusted mode, for otherwise
7735 * the hw state checker will get angry at the mismatch. */
7736 crtc_vtotal = adjusted_mode->crtc_vtotal;
7737 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
7739 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
7740 /* the chip adds 2 halflines automatically */
7742 crtc_vblank_end -= 1;
7744 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7745 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7747 vsyncshift = adjusted_mode->crtc_hsync_start -
7748 adjusted_mode->crtc_htotal / 2;
7750 vsyncshift += adjusted_mode->crtc_htotal;
7753 if (INTEL_INFO(dev)->gen > 3)
7754 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
7756 I915_WRITE(HTOTAL(cpu_transcoder),
7757 (adjusted_mode->crtc_hdisplay - 1) |
7758 ((adjusted_mode->crtc_htotal - 1) << 16));
7759 I915_WRITE(HBLANK(cpu_transcoder),
7760 (adjusted_mode->crtc_hblank_start - 1) |
7761 ((adjusted_mode->crtc_hblank_end - 1) << 16));
7762 I915_WRITE(HSYNC(cpu_transcoder),
7763 (adjusted_mode->crtc_hsync_start - 1) |
7764 ((adjusted_mode->crtc_hsync_end - 1) << 16));
7766 I915_WRITE(VTOTAL(cpu_transcoder),
7767 (adjusted_mode->crtc_vdisplay - 1) |
7768 ((crtc_vtotal - 1) << 16));
7769 I915_WRITE(VBLANK(cpu_transcoder),
7770 (adjusted_mode->crtc_vblank_start - 1) |
7771 ((crtc_vblank_end - 1) << 16));
7772 I915_WRITE(VSYNC(cpu_transcoder),
7773 (adjusted_mode->crtc_vsync_start - 1) |
7774 ((adjusted_mode->crtc_vsync_end - 1) << 16));
7776 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7777 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7778 * documented on the DDI_FUNC_CTL register description, EDP Input Select
7780 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
7781 (pipe == PIPE_B || pipe == PIPE_C))
7782 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7786 static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc)
7788 struct drm_device *dev = intel_crtc->base.dev;
7789 struct drm_i915_private *dev_priv = dev->dev_private;
7790 enum pipe pipe = intel_crtc->pipe;
7792 /* pipesrc controls the size that is scaled from, which should
7793 * always be the user's requested size.
7795 I915_WRITE(PIPESRC(pipe),
7796 ((intel_crtc->config->pipe_src_w - 1) << 16) |
7797 (intel_crtc->config->pipe_src_h - 1));
7800 static void intel_get_pipe_timings(struct intel_crtc *crtc,
7801 struct intel_crtc_state *pipe_config)
7803 struct drm_device *dev = crtc->base.dev;
7804 struct drm_i915_private *dev_priv = dev->dev_private;
7805 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7808 tmp = I915_READ(HTOTAL(cpu_transcoder));
7809 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7810 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
7811 tmp = I915_READ(HBLANK(cpu_transcoder));
7812 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
7813 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
7814 tmp = I915_READ(HSYNC(cpu_transcoder));
7815 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7816 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
7818 tmp = I915_READ(VTOTAL(cpu_transcoder));
7819 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7820 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
7821 tmp = I915_READ(VBLANK(cpu_transcoder));
7822 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
7823 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
7824 tmp = I915_READ(VSYNC(cpu_transcoder));
7825 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7826 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
7828 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
7829 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7830 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7831 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
7835 static void intel_get_pipe_src_size(struct intel_crtc *crtc,
7836 struct intel_crtc_state *pipe_config)
7838 struct drm_device *dev = crtc->base.dev;
7839 struct drm_i915_private *dev_priv = dev->dev_private;
7842 tmp = I915_READ(PIPESRC(crtc->pipe));
7843 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7844 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7846 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7847 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
7850 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
7851 struct intel_crtc_state *pipe_config)
7853 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7854 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7855 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7856 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
7858 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7859 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7860 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7861 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
7863 mode->flags = pipe_config->base.adjusted_mode.flags;
7864 mode->type = DRM_MODE_TYPE_DRIVER;
7866 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7867 mode->flags |= pipe_config->base.adjusted_mode.flags;
7869 mode->hsync = drm_mode_hsync(mode);
7870 mode->vrefresh = drm_mode_vrefresh(mode);
7871 drm_mode_set_name(mode);
7874 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
7876 struct drm_device *dev = intel_crtc->base.dev;
7877 struct drm_i915_private *dev_priv = dev->dev_private;
7882 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
7883 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
7884 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
7886 if (intel_crtc->config->double_wide)
7887 pipeconf |= PIPECONF_DOUBLE_WIDE;
7889 /* only g4x and later have fancy bpc/dither controls */
7890 if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
7891 /* Bspec claims that we can't use dithering for 30bpp pipes. */
7892 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
7893 pipeconf |= PIPECONF_DITHER_EN |
7894 PIPECONF_DITHER_TYPE_SP;
7896 switch (intel_crtc->config->pipe_bpp) {
7898 pipeconf |= PIPECONF_6BPC;
7901 pipeconf |= PIPECONF_8BPC;
7904 pipeconf |= PIPECONF_10BPC;
7907 /* Case prevented by intel_choose_pipe_bpp_dither. */
7912 if (HAS_PIPE_CXSR(dev)) {
7913 if (intel_crtc->lowfreq_avail) {
7914 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
7915 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
7917 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
7921 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
7922 if (INTEL_INFO(dev)->gen < 4 ||
7923 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7924 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7926 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7928 pipeconf |= PIPECONF_PROGRESSIVE;
7930 if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
7931 intel_crtc->config->limited_color_range)
7932 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
7934 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
7935 POSTING_READ(PIPECONF(intel_crtc->pipe));
7938 static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
7939 struct intel_crtc_state *crtc_state)
7941 struct drm_device *dev = crtc->base.dev;
7942 struct drm_i915_private *dev_priv = dev->dev_private;
7943 const struct intel_limit *limit;
7946 memset(&crtc_state->dpll_hw_state, 0,
7947 sizeof(crtc_state->dpll_hw_state));
7949 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7950 if (intel_panel_use_ssc(dev_priv)) {
7951 refclk = dev_priv->vbt.lvds_ssc_freq;
7952 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7955 limit = &intel_limits_i8xx_lvds;
7956 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO)) {
7957 limit = &intel_limits_i8xx_dvo;
7959 limit = &intel_limits_i8xx_dac;
7962 if (!crtc_state->clock_set &&
7963 !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
7964 refclk, NULL, &crtc_state->dpll)) {
7965 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7969 i8xx_compute_dpll(crtc, crtc_state, NULL);
7974 static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
7975 struct intel_crtc_state *crtc_state)
7977 struct drm_device *dev = crtc->base.dev;
7978 struct drm_i915_private *dev_priv = dev->dev_private;
7979 const struct intel_limit *limit;
7982 memset(&crtc_state->dpll_hw_state, 0,
7983 sizeof(crtc_state->dpll_hw_state));
7985 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7986 if (intel_panel_use_ssc(dev_priv)) {
7987 refclk = dev_priv->vbt.lvds_ssc_freq;
7988 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7991 if (intel_is_dual_link_lvds(dev))
7992 limit = &intel_limits_g4x_dual_channel_lvds;
7994 limit = &intel_limits_g4x_single_channel_lvds;
7995 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
7996 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
7997 limit = &intel_limits_g4x_hdmi;
7998 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
7999 limit = &intel_limits_g4x_sdvo;
8001 /* The option is for other outputs */
8002 limit = &intel_limits_i9xx_sdvo;
8005 if (!crtc_state->clock_set &&
8006 !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8007 refclk, NULL, &crtc_state->dpll)) {
8008 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8012 i9xx_compute_dpll(crtc, crtc_state, NULL);
8017 static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
8018 struct intel_crtc_state *crtc_state)
8020 struct drm_device *dev = crtc->base.dev;
8021 struct drm_i915_private *dev_priv = dev->dev_private;
8022 const struct intel_limit *limit;
8025 memset(&crtc_state->dpll_hw_state, 0,
8026 sizeof(crtc_state->dpll_hw_state));
8028 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
8029 if (intel_panel_use_ssc(dev_priv)) {
8030 refclk = dev_priv->vbt.lvds_ssc_freq;
8031 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
8034 limit = &intel_limits_pineview_lvds;
8036 limit = &intel_limits_pineview_sdvo;
8039 if (!crtc_state->clock_set &&
8040 !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8041 refclk, NULL, &crtc_state->dpll)) {
8042 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8046 i9xx_compute_dpll(crtc, crtc_state, NULL);
8051 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
8052 struct intel_crtc_state *crtc_state)
8054 struct drm_device *dev = crtc->base.dev;
8055 struct drm_i915_private *dev_priv = dev->dev_private;
8056 const struct intel_limit *limit;
8059 memset(&crtc_state->dpll_hw_state, 0,
8060 sizeof(crtc_state->dpll_hw_state));
8062 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
8063 if (intel_panel_use_ssc(dev_priv)) {
8064 refclk = dev_priv->vbt.lvds_ssc_freq;
8065 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
8068 limit = &intel_limits_i9xx_lvds;
8070 limit = &intel_limits_i9xx_sdvo;
8073 if (!crtc_state->clock_set &&
8074 !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8075 refclk, NULL, &crtc_state->dpll)) {
8076 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8080 i9xx_compute_dpll(crtc, crtc_state, NULL);
8085 static int chv_crtc_compute_clock(struct intel_crtc *crtc,
8086 struct intel_crtc_state *crtc_state)
8088 int refclk = 100000;
8089 const struct intel_limit *limit = &intel_limits_chv;
8091 memset(&crtc_state->dpll_hw_state, 0,
8092 sizeof(crtc_state->dpll_hw_state));
8094 if (!crtc_state->clock_set &&
8095 !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8096 refclk, NULL, &crtc_state->dpll)) {
8097 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8101 chv_compute_dpll(crtc, crtc_state);
8106 static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
8107 struct intel_crtc_state *crtc_state)
8109 int refclk = 100000;
8110 const struct intel_limit *limit = &intel_limits_vlv;
8112 memset(&crtc_state->dpll_hw_state, 0,
8113 sizeof(crtc_state->dpll_hw_state));
8115 if (!crtc_state->clock_set &&
8116 !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8117 refclk, NULL, &crtc_state->dpll)) {
8118 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8122 vlv_compute_dpll(crtc, crtc_state);
8127 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
8128 struct intel_crtc_state *pipe_config)
8130 struct drm_device *dev = crtc->base.dev;
8131 struct drm_i915_private *dev_priv = dev->dev_private;
8134 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
8137 tmp = I915_READ(PFIT_CONTROL);
8138 if (!(tmp & PFIT_ENABLE))
8141 /* Check whether the pfit is attached to our pipe. */
8142 if (INTEL_INFO(dev)->gen < 4) {
8143 if (crtc->pipe != PIPE_B)
8146 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
8150 pipe_config->gmch_pfit.control = tmp;
8151 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
8154 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
8155 struct intel_crtc_state *pipe_config)
8157 struct drm_device *dev = crtc->base.dev;
8158 struct drm_i915_private *dev_priv = dev->dev_private;
8159 int pipe = pipe_config->cpu_transcoder;
8162 int refclk = 100000;
8164 /* In case of DSI, DPLL will not be used */
8165 if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
8168 mutex_lock(&dev_priv->sb_lock);
8169 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
8170 mutex_unlock(&dev_priv->sb_lock);
8172 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
8173 clock.m2 = mdiv & DPIO_M2DIV_MASK;
8174 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
8175 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
8176 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
8178 pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
8182 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
8183 struct intel_initial_plane_config *plane_config)
8185 struct drm_device *dev = crtc->base.dev;
8186 struct drm_i915_private *dev_priv = dev->dev_private;
8187 u32 val, base, offset;
8188 int pipe = crtc->pipe, plane = crtc->plane;
8189 int fourcc, pixel_format;
8190 unsigned int aligned_height;
8191 struct drm_framebuffer *fb;
8192 struct intel_framebuffer *intel_fb;
8194 val = I915_READ(DSPCNTR(plane));
8195 if (!(val & DISPLAY_PLANE_ENABLE))
8198 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
8200 DRM_DEBUG_KMS("failed to alloc fb\n");
8204 fb = &intel_fb->base;
8206 if (INTEL_INFO(dev)->gen >= 4) {
8207 if (val & DISPPLANE_TILED) {
8208 plane_config->tiling = I915_TILING_X;
8209 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
8213 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
8214 fourcc = i9xx_format_to_fourcc(pixel_format);
8215 fb->pixel_format = fourcc;
8216 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
8218 if (INTEL_INFO(dev)->gen >= 4) {
8219 if (plane_config->tiling)
8220 offset = I915_READ(DSPTILEOFF(plane));
8222 offset = I915_READ(DSPLINOFF(plane));
8223 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
8225 base = I915_READ(DSPADDR(plane));
8227 plane_config->base = base;
8229 val = I915_READ(PIPESRC(pipe));
8230 fb->width = ((val >> 16) & 0xfff) + 1;
8231 fb->height = ((val >> 0) & 0xfff) + 1;
8233 val = I915_READ(DSPSTRIDE(pipe));
8234 fb->pitches[0] = val & 0xffffffc0;
8236 aligned_height = intel_fb_align_height(dev, fb->height,
8240 plane_config->size = fb->pitches[0] * aligned_height;
8242 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
8243 pipe_name(pipe), plane, fb->width, fb->height,
8244 fb->bits_per_pixel, base, fb->pitches[0],
8245 plane_config->size);
8247 plane_config->fb = intel_fb;
8250 static void chv_crtc_clock_get(struct intel_crtc *crtc,
8251 struct intel_crtc_state *pipe_config)
8253 struct drm_device *dev = crtc->base.dev;
8254 struct drm_i915_private *dev_priv = dev->dev_private;
8255 int pipe = pipe_config->cpu_transcoder;
8256 enum dpio_channel port = vlv_pipe_to_channel(pipe);
8258 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
8259 int refclk = 100000;
8261 /* In case of DSI, DPLL will not be used */
8262 if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
8265 mutex_lock(&dev_priv->sb_lock);
8266 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
8267 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
8268 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
8269 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
8270 pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
8271 mutex_unlock(&dev_priv->sb_lock);
8273 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
8274 clock.m2 = (pll_dw0 & 0xff) << 22;
8275 if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
8276 clock.m2 |= pll_dw2 & 0x3fffff;
8277 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
8278 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
8279 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
8281 pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
8284 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
8285 struct intel_crtc_state *pipe_config)
8287 struct drm_device *dev = crtc->base.dev;
8288 struct drm_i915_private *dev_priv = dev->dev_private;
8289 enum intel_display_power_domain power_domain;
8293 power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
8294 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
8297 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8298 pipe_config->shared_dpll = NULL;
8302 tmp = I915_READ(PIPECONF(crtc->pipe));
8303 if (!(tmp & PIPECONF_ENABLE))
8306 if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
8307 switch (tmp & PIPECONF_BPC_MASK) {
8309 pipe_config->pipe_bpp = 18;
8312 pipe_config->pipe_bpp = 24;
8314 case PIPECONF_10BPC:
8315 pipe_config->pipe_bpp = 30;
8322 if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
8323 (tmp & PIPECONF_COLOR_RANGE_SELECT))
8324 pipe_config->limited_color_range = true;
8326 if (INTEL_INFO(dev)->gen < 4)
8327 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
8329 intel_get_pipe_timings(crtc, pipe_config);
8330 intel_get_pipe_src_size(crtc, pipe_config);
8332 i9xx_get_pfit_config(crtc, pipe_config);
8334 if (INTEL_INFO(dev)->gen >= 4) {
8335 /* No way to read it out on pipes B and C */
8336 if (IS_CHERRYVIEW(dev) && crtc->pipe != PIPE_A)
8337 tmp = dev_priv->chv_dpll_md[crtc->pipe];
8339 tmp = I915_READ(DPLL_MD(crtc->pipe));
8340 pipe_config->pixel_multiplier =
8341 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
8342 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8343 pipe_config->dpll_hw_state.dpll_md = tmp;
8344 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
8345 tmp = I915_READ(DPLL(crtc->pipe));
8346 pipe_config->pixel_multiplier =
8347 ((tmp & SDVO_MULTIPLIER_MASK)
8348 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
8350 /* Note that on i915G/GM the pixel multiplier is in the sdvo
8351 * port and will be fixed up in the encoder->get_config
8353 pipe_config->pixel_multiplier = 1;
8355 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
8356 if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
8358 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
8359 * on 830. Filter it out here so that we don't
8360 * report errors due to that.
8363 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
8365 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
8366 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
8368 /* Mask out read-only status bits. */
8369 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
8370 DPLL_PORTC_READY_MASK |
8371 DPLL_PORTB_READY_MASK);
8374 if (IS_CHERRYVIEW(dev))
8375 chv_crtc_clock_get(crtc, pipe_config);
8376 else if (IS_VALLEYVIEW(dev))
8377 vlv_crtc_clock_get(crtc, pipe_config);
8379 i9xx_crtc_clock_get(crtc, pipe_config);
8382 * Normally the dotclock is filled in by the encoder .get_config()
8383 * but in case the pipe is enabled w/o any ports we need a sane
8386 pipe_config->base.adjusted_mode.crtc_clock =
8387 pipe_config->port_clock / pipe_config->pixel_multiplier;
8392 intel_display_power_put(dev_priv, power_domain);
8397 static void ironlake_init_pch_refclk(struct drm_device *dev)
8399 struct drm_i915_private *dev_priv = dev->dev_private;
8400 struct intel_encoder *encoder;
8403 bool has_lvds = false;
8404 bool has_cpu_edp = false;
8405 bool has_panel = false;
8406 bool has_ck505 = false;
8407 bool can_ssc = false;
8408 bool using_ssc_source = false;
8410 /* We need to take the global config into account */
8411 for_each_intel_encoder(dev, encoder) {
8412 switch (encoder->type) {
8413 case INTEL_OUTPUT_LVDS:
8417 case INTEL_OUTPUT_EDP:
8419 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
8427 if (HAS_PCH_IBX(dev)) {
8428 has_ck505 = dev_priv->vbt.display_clock_mode;
8429 can_ssc = has_ck505;
8435 /* Check if any DPLLs are using the SSC source */
8436 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
8437 u32 temp = I915_READ(PCH_DPLL(i));
8439 if (!(temp & DPLL_VCO_ENABLE))
8442 if ((temp & PLL_REF_INPUT_MASK) ==
8443 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
8444 using_ssc_source = true;
8449 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
8450 has_panel, has_lvds, has_ck505, using_ssc_source);
8452 /* Ironlake: try to setup display ref clock before DPLL
8453 * enabling. This is only under driver's control after
8454 * PCH B stepping, previous chipset stepping should be
8455 * ignoring this setting.
8457 val = I915_READ(PCH_DREF_CONTROL);
8459 /* As we must carefully and slowly disable/enable each source in turn,
8460 * compute the final state we want first and check if we need to
8461 * make any changes at all.
8464 final &= ~DREF_NONSPREAD_SOURCE_MASK;
8466 final |= DREF_NONSPREAD_CK505_ENABLE;
8468 final |= DREF_NONSPREAD_SOURCE_ENABLE;
8470 final &= ~DREF_SSC_SOURCE_MASK;
8471 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8472 final &= ~DREF_SSC1_ENABLE;
8475 final |= DREF_SSC_SOURCE_ENABLE;
8477 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8478 final |= DREF_SSC1_ENABLE;
8481 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8482 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8484 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8486 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8487 } else if (using_ssc_source) {
8488 final |= DREF_SSC_SOURCE_ENABLE;
8489 final |= DREF_SSC1_ENABLE;
8495 /* Always enable nonspread source */
8496 val &= ~DREF_NONSPREAD_SOURCE_MASK;
8499 val |= DREF_NONSPREAD_CK505_ENABLE;
8501 val |= DREF_NONSPREAD_SOURCE_ENABLE;
8504 val &= ~DREF_SSC_SOURCE_MASK;
8505 val |= DREF_SSC_SOURCE_ENABLE;
8507 /* SSC must be turned on before enabling the CPU output */
8508 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8509 DRM_DEBUG_KMS("Using SSC on panel\n");
8510 val |= DREF_SSC1_ENABLE;
8512 val &= ~DREF_SSC1_ENABLE;
8514 /* Get SSC going before enabling the outputs */
8515 I915_WRITE(PCH_DREF_CONTROL, val);
8516 POSTING_READ(PCH_DREF_CONTROL);
8519 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8521 /* Enable CPU source on CPU attached eDP */
8523 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8524 DRM_DEBUG_KMS("Using SSC on eDP\n");
8525 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8527 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8529 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8531 I915_WRITE(PCH_DREF_CONTROL, val);
8532 POSTING_READ(PCH_DREF_CONTROL);
8535 DRM_DEBUG_KMS("Disabling CPU source output\n");
8537 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8539 /* Turn off CPU output */
8540 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8542 I915_WRITE(PCH_DREF_CONTROL, val);
8543 POSTING_READ(PCH_DREF_CONTROL);
8546 if (!using_ssc_source) {
8547 DRM_DEBUG_KMS("Disabling SSC source\n");
8549 /* Turn off the SSC source */
8550 val &= ~DREF_SSC_SOURCE_MASK;
8551 val |= DREF_SSC_SOURCE_DISABLE;
8554 val &= ~DREF_SSC1_ENABLE;
8556 I915_WRITE(PCH_DREF_CONTROL, val);
8557 POSTING_READ(PCH_DREF_CONTROL);
8562 BUG_ON(val != final);
8565 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
8569 tmp = I915_READ(SOUTH_CHICKEN2);
8570 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
8571 I915_WRITE(SOUTH_CHICKEN2, tmp);
8573 if (wait_for_us(I915_READ(SOUTH_CHICKEN2) &
8574 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
8575 DRM_ERROR("FDI mPHY reset assert timeout\n");
8577 tmp = I915_READ(SOUTH_CHICKEN2);
8578 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
8579 I915_WRITE(SOUTH_CHICKEN2, tmp);
8581 if (wait_for_us((I915_READ(SOUTH_CHICKEN2) &
8582 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
8583 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
8586 /* WaMPhyProgramming:hsw */
8587 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
8591 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
8592 tmp &= ~(0xFF << 24);
8593 tmp |= (0x12 << 24);
8594 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
8596 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
8598 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
8600 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
8602 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
8604 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
8605 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8606 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
8608 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
8609 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8610 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
8612 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8615 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
8617 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8620 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
8622 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8625 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8627 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8630 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8632 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8633 tmp &= ~(0xFF << 16);
8634 tmp |= (0x1C << 16);
8635 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8637 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8638 tmp &= ~(0xFF << 16);
8639 tmp |= (0x1C << 16);
8640 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8642 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8644 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
8646 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8648 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
8650 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8651 tmp &= ~(0xF << 28);
8653 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
8655 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8656 tmp &= ~(0xF << 28);
8658 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
8661 /* Implements 3 different sequences from BSpec chapter "Display iCLK
8662 * Programming" based on the parameters passed:
8663 * - Sequence to enable CLKOUT_DP
8664 * - Sequence to enable CLKOUT_DP without spread
8665 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8667 static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
8670 struct drm_i915_private *dev_priv = dev->dev_private;
8673 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8675 if (WARN(HAS_PCH_LPT_LP(dev) && with_fdi, "LP PCH doesn't have FDI\n"))
8678 mutex_lock(&dev_priv->sb_lock);
8680 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8681 tmp &= ~SBI_SSCCTL_DISABLE;
8682 tmp |= SBI_SSCCTL_PATHALT;
8683 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8688 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8689 tmp &= ~SBI_SSCCTL_PATHALT;
8690 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8693 lpt_reset_fdi_mphy(dev_priv);
8694 lpt_program_fdi_mphy(dev_priv);
8698 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8699 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8700 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8701 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8703 mutex_unlock(&dev_priv->sb_lock);
8706 /* Sequence to disable CLKOUT_DP */
8707 static void lpt_disable_clkout_dp(struct drm_device *dev)
8709 struct drm_i915_private *dev_priv = dev->dev_private;
8712 mutex_lock(&dev_priv->sb_lock);
8714 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8715 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8716 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8717 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8719 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8720 if (!(tmp & SBI_SSCCTL_DISABLE)) {
8721 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8722 tmp |= SBI_SSCCTL_PATHALT;
8723 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8726 tmp |= SBI_SSCCTL_DISABLE;
8727 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8730 mutex_unlock(&dev_priv->sb_lock);
8733 #define BEND_IDX(steps) ((50 + (steps)) / 5)
8735 static const uint16_t sscdivintphase[] = {
8736 [BEND_IDX( 50)] = 0x3B23,
8737 [BEND_IDX( 45)] = 0x3B23,
8738 [BEND_IDX( 40)] = 0x3C23,
8739 [BEND_IDX( 35)] = 0x3C23,
8740 [BEND_IDX( 30)] = 0x3D23,
8741 [BEND_IDX( 25)] = 0x3D23,
8742 [BEND_IDX( 20)] = 0x3E23,
8743 [BEND_IDX( 15)] = 0x3E23,
8744 [BEND_IDX( 10)] = 0x3F23,
8745 [BEND_IDX( 5)] = 0x3F23,
8746 [BEND_IDX( 0)] = 0x0025,
8747 [BEND_IDX( -5)] = 0x0025,
8748 [BEND_IDX(-10)] = 0x0125,
8749 [BEND_IDX(-15)] = 0x0125,
8750 [BEND_IDX(-20)] = 0x0225,
8751 [BEND_IDX(-25)] = 0x0225,
8752 [BEND_IDX(-30)] = 0x0325,
8753 [BEND_IDX(-35)] = 0x0325,
8754 [BEND_IDX(-40)] = 0x0425,
8755 [BEND_IDX(-45)] = 0x0425,
8756 [BEND_IDX(-50)] = 0x0525,
8761 * steps -50 to 50 inclusive, in steps of 5
8762 * < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz)
8763 * change in clock period = -(steps / 10) * 5.787 ps
8765 static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps)
8768 int idx = BEND_IDX(steps);
8770 if (WARN_ON(steps % 5 != 0))
8773 if (WARN_ON(idx >= ARRAY_SIZE(sscdivintphase)))
8776 mutex_lock(&dev_priv->sb_lock);
8778 if (steps % 10 != 0)
8782 intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK);
8784 tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK);
8786 tmp |= sscdivintphase[idx];
8787 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK);
8789 mutex_unlock(&dev_priv->sb_lock);
8794 static void lpt_init_pch_refclk(struct drm_device *dev)
8796 struct intel_encoder *encoder;
8797 bool has_vga = false;
8799 for_each_intel_encoder(dev, encoder) {
8800 switch (encoder->type) {
8801 case INTEL_OUTPUT_ANALOG:
8810 lpt_bend_clkout_dp(to_i915(dev), 0);
8811 lpt_enable_clkout_dp(dev, true, true);
8813 lpt_disable_clkout_dp(dev);
8818 * Initialize reference clocks when the driver loads
8820 void intel_init_pch_refclk(struct drm_device *dev)
8822 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
8823 ironlake_init_pch_refclk(dev);
8824 else if (HAS_PCH_LPT(dev))
8825 lpt_init_pch_refclk(dev);
8828 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
8830 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8831 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8832 int pipe = intel_crtc->pipe;
8837 switch (intel_crtc->config->pipe_bpp) {
8839 val |= PIPECONF_6BPC;
8842 val |= PIPECONF_8BPC;
8845 val |= PIPECONF_10BPC;
8848 val |= PIPECONF_12BPC;
8851 /* Case prevented by intel_choose_pipe_bpp_dither. */
8855 if (intel_crtc->config->dither)
8856 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8858 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8859 val |= PIPECONF_INTERLACED_ILK;
8861 val |= PIPECONF_PROGRESSIVE;
8863 if (intel_crtc->config->limited_color_range)
8864 val |= PIPECONF_COLOR_RANGE_SELECT;
8866 I915_WRITE(PIPECONF(pipe), val);
8867 POSTING_READ(PIPECONF(pipe));
8870 static void haswell_set_pipeconf(struct drm_crtc *crtc)
8872 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8873 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8874 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
8877 if (IS_HASWELL(dev_priv) && intel_crtc->config->dither)
8878 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8880 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8881 val |= PIPECONF_INTERLACED_ILK;
8883 val |= PIPECONF_PROGRESSIVE;
8885 I915_WRITE(PIPECONF(cpu_transcoder), val);
8886 POSTING_READ(PIPECONF(cpu_transcoder));
8889 static void haswell_set_pipemisc(struct drm_crtc *crtc)
8891 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8892 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8894 if (IS_BROADWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 9) {
8897 switch (intel_crtc->config->pipe_bpp) {
8899 val |= PIPEMISC_DITHER_6_BPC;
8902 val |= PIPEMISC_DITHER_8_BPC;
8905 val |= PIPEMISC_DITHER_10_BPC;
8908 val |= PIPEMISC_DITHER_12_BPC;
8911 /* Case prevented by pipe_config_set_bpp. */
8915 if (intel_crtc->config->dither)
8916 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8918 I915_WRITE(PIPEMISC(intel_crtc->pipe), val);
8922 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8925 * Account for spread spectrum to avoid
8926 * oversubscribing the link. Max center spread
8927 * is 2.5%; use 5% for safety's sake.
8929 u32 bps = target_clock * bpp * 21 / 20;
8930 return DIV_ROUND_UP(bps, link_bw * 8);
8933 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
8935 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
8938 static void ironlake_compute_dpll(struct intel_crtc *intel_crtc,
8939 struct intel_crtc_state *crtc_state,
8940 struct dpll *reduced_clock)
8942 struct drm_crtc *crtc = &intel_crtc->base;
8943 struct drm_device *dev = crtc->dev;
8944 struct drm_i915_private *dev_priv = dev->dev_private;
8945 struct drm_atomic_state *state = crtc_state->base.state;
8946 struct drm_connector *connector;
8947 struct drm_connector_state *connector_state;
8948 struct intel_encoder *encoder;
8951 bool is_lvds = false, is_sdvo = false;
8953 for_each_connector_in_state(state, connector, connector_state, i) {
8954 if (connector_state->crtc != crtc_state->base.crtc)
8957 encoder = to_intel_encoder(connector_state->best_encoder);
8959 switch (encoder->type) {
8960 case INTEL_OUTPUT_LVDS:
8963 case INTEL_OUTPUT_SDVO:
8964 case INTEL_OUTPUT_HDMI:
8972 /* Enable autotuning of the PLL clock (if permissible) */
8975 if ((intel_panel_use_ssc(dev_priv) &&
8976 dev_priv->vbt.lvds_ssc_freq == 100000) ||
8977 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
8979 } else if (crtc_state->sdvo_tv_clock)
8982 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
8984 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
8987 if (reduced_clock) {
8988 fp2 = i9xx_dpll_compute_fp(reduced_clock);
8990 if (reduced_clock->m < factor * reduced_clock->n)
8999 dpll |= DPLLB_MODE_LVDS;
9001 dpll |= DPLLB_MODE_DAC_SERIAL;
9003 dpll |= (crtc_state->pixel_multiplier - 1)
9004 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
9007 dpll |= DPLL_SDVO_HIGH_SPEED;
9008 if (crtc_state->has_dp_encoder)
9009 dpll |= DPLL_SDVO_HIGH_SPEED;
9011 /* compute bitmask from p1 value */
9012 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
9014 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
9016 switch (crtc_state->dpll.p2) {
9018 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
9021 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
9024 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
9027 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
9031 if (is_lvds && intel_panel_use_ssc(dev_priv))
9032 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
9034 dpll |= PLL_REF_INPUT_DREFCLK;
9036 dpll |= DPLL_VCO_ENABLE;
9038 crtc_state->dpll_hw_state.dpll = dpll;
9039 crtc_state->dpll_hw_state.fp0 = fp;
9040 crtc_state->dpll_hw_state.fp1 = fp2;
9043 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
9044 struct intel_crtc_state *crtc_state)
9046 struct drm_device *dev = crtc->base.dev;
9047 struct drm_i915_private *dev_priv = dev->dev_private;
9048 struct dpll reduced_clock;
9049 bool has_reduced_clock = false;
9050 struct intel_shared_dpll *pll;
9051 const struct intel_limit *limit;
9052 int refclk = 120000;
9054 memset(&crtc_state->dpll_hw_state, 0,
9055 sizeof(crtc_state->dpll_hw_state));
9057 crtc->lowfreq_avail = false;
9059 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
9060 if (!crtc_state->has_pch_encoder)
9063 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
9064 if (intel_panel_use_ssc(dev_priv)) {
9065 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
9066 dev_priv->vbt.lvds_ssc_freq);
9067 refclk = dev_priv->vbt.lvds_ssc_freq;
9070 if (intel_is_dual_link_lvds(dev)) {
9071 if (refclk == 100000)
9072 limit = &intel_limits_ironlake_dual_lvds_100m;
9074 limit = &intel_limits_ironlake_dual_lvds;
9076 if (refclk == 100000)
9077 limit = &intel_limits_ironlake_single_lvds_100m;
9079 limit = &intel_limits_ironlake_single_lvds;
9082 limit = &intel_limits_ironlake_dac;
9085 if (!crtc_state->clock_set &&
9086 !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
9087 refclk, NULL, &crtc_state->dpll)) {
9088 DRM_ERROR("Couldn't find PLL settings for mode!\n");
9092 ironlake_compute_dpll(crtc, crtc_state,
9093 has_reduced_clock ? &reduced_clock : NULL);
9095 pll = intel_get_shared_dpll(crtc, crtc_state, NULL);
9097 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
9098 pipe_name(crtc->pipe));
9102 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
9104 crtc->lowfreq_avail = true;
9109 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
9110 struct intel_link_m_n *m_n)
9112 struct drm_device *dev = crtc->base.dev;
9113 struct drm_i915_private *dev_priv = dev->dev_private;
9114 enum pipe pipe = crtc->pipe;
9116 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
9117 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
9118 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
9120 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
9121 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
9122 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9125 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
9126 enum transcoder transcoder,
9127 struct intel_link_m_n *m_n,
9128 struct intel_link_m_n *m2_n2)
9130 struct drm_device *dev = crtc->base.dev;
9131 struct drm_i915_private *dev_priv = dev->dev_private;
9132 enum pipe pipe = crtc->pipe;
9134 if (INTEL_INFO(dev)->gen >= 5) {
9135 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
9136 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
9137 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
9139 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
9140 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
9141 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9142 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
9143 * gen < 8) and if DRRS is supported (to make sure the
9144 * registers are not unnecessarily read).
9146 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
9147 crtc->config->has_drrs) {
9148 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
9149 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
9150 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
9152 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
9153 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
9154 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9157 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
9158 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
9159 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
9161 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
9162 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
9163 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9167 void intel_dp_get_m_n(struct intel_crtc *crtc,
9168 struct intel_crtc_state *pipe_config)
9170 if (pipe_config->has_pch_encoder)
9171 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
9173 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
9174 &pipe_config->dp_m_n,
9175 &pipe_config->dp_m2_n2);
9178 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
9179 struct intel_crtc_state *pipe_config)
9181 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
9182 &pipe_config->fdi_m_n, NULL);
9185 static void skylake_get_pfit_config(struct intel_crtc *crtc,
9186 struct intel_crtc_state *pipe_config)
9188 struct drm_device *dev = crtc->base.dev;
9189 struct drm_i915_private *dev_priv = dev->dev_private;
9190 struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
9191 uint32_t ps_ctrl = 0;
9195 /* find scaler attached to this pipe */
9196 for (i = 0; i < crtc->num_scalers; i++) {
9197 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
9198 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
9200 pipe_config->pch_pfit.enabled = true;
9201 pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
9202 pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
9207 scaler_state->scaler_id = id;
9209 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
9211 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
9216 skylake_get_initial_plane_config(struct intel_crtc *crtc,
9217 struct intel_initial_plane_config *plane_config)
9219 struct drm_device *dev = crtc->base.dev;
9220 struct drm_i915_private *dev_priv = dev->dev_private;
9221 u32 val, base, offset, stride_mult, tiling;
9222 int pipe = crtc->pipe;
9223 int fourcc, pixel_format;
9224 unsigned int aligned_height;
9225 struct drm_framebuffer *fb;
9226 struct intel_framebuffer *intel_fb;
9228 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9230 DRM_DEBUG_KMS("failed to alloc fb\n");
9234 fb = &intel_fb->base;
9236 val = I915_READ(PLANE_CTL(pipe, 0));
9237 if (!(val & PLANE_CTL_ENABLE))
9240 pixel_format = val & PLANE_CTL_FORMAT_MASK;
9241 fourcc = skl_format_to_fourcc(pixel_format,
9242 val & PLANE_CTL_ORDER_RGBX,
9243 val & PLANE_CTL_ALPHA_MASK);
9244 fb->pixel_format = fourcc;
9245 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9247 tiling = val & PLANE_CTL_TILED_MASK;
9249 case PLANE_CTL_TILED_LINEAR:
9250 fb->modifier[0] = DRM_FORMAT_MOD_NONE;
9252 case PLANE_CTL_TILED_X:
9253 plane_config->tiling = I915_TILING_X;
9254 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9256 case PLANE_CTL_TILED_Y:
9257 fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
9259 case PLANE_CTL_TILED_YF:
9260 fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
9263 MISSING_CASE(tiling);
9267 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
9268 plane_config->base = base;
9270 offset = I915_READ(PLANE_OFFSET(pipe, 0));
9272 val = I915_READ(PLANE_SIZE(pipe, 0));
9273 fb->height = ((val >> 16) & 0xfff) + 1;
9274 fb->width = ((val >> 0) & 0x1fff) + 1;
9276 val = I915_READ(PLANE_STRIDE(pipe, 0));
9277 stride_mult = intel_fb_stride_alignment(dev_priv, fb->modifier[0],
9279 fb->pitches[0] = (val & 0x3ff) * stride_mult;
9281 aligned_height = intel_fb_align_height(dev, fb->height,
9285 plane_config->size = fb->pitches[0] * aligned_height;
9287 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9288 pipe_name(pipe), fb->width, fb->height,
9289 fb->bits_per_pixel, base, fb->pitches[0],
9290 plane_config->size);
9292 plane_config->fb = intel_fb;
9299 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
9300 struct intel_crtc_state *pipe_config)
9302 struct drm_device *dev = crtc->base.dev;
9303 struct drm_i915_private *dev_priv = dev->dev_private;
9306 tmp = I915_READ(PF_CTL(crtc->pipe));
9308 if (tmp & PF_ENABLE) {
9309 pipe_config->pch_pfit.enabled = true;
9310 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
9311 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
9313 /* We currently do not free assignements of panel fitters on
9314 * ivb/hsw (since we don't use the higher upscaling modes which
9315 * differentiates them) so just WARN about this case for now. */
9317 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
9318 PF_PIPE_SEL_IVB(crtc->pipe));
9324 ironlake_get_initial_plane_config(struct intel_crtc *crtc,
9325 struct intel_initial_plane_config *plane_config)
9327 struct drm_device *dev = crtc->base.dev;
9328 struct drm_i915_private *dev_priv = dev->dev_private;
9329 u32 val, base, offset;
9330 int pipe = crtc->pipe;
9331 int fourcc, pixel_format;
9332 unsigned int aligned_height;
9333 struct drm_framebuffer *fb;
9334 struct intel_framebuffer *intel_fb;
9336 val = I915_READ(DSPCNTR(pipe));
9337 if (!(val & DISPLAY_PLANE_ENABLE))
9340 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9342 DRM_DEBUG_KMS("failed to alloc fb\n");
9346 fb = &intel_fb->base;
9348 if (INTEL_INFO(dev)->gen >= 4) {
9349 if (val & DISPPLANE_TILED) {
9350 plane_config->tiling = I915_TILING_X;
9351 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9355 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
9356 fourcc = i9xx_format_to_fourcc(pixel_format);
9357 fb->pixel_format = fourcc;
9358 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9360 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
9361 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
9362 offset = I915_READ(DSPOFFSET(pipe));
9364 if (plane_config->tiling)
9365 offset = I915_READ(DSPTILEOFF(pipe));
9367 offset = I915_READ(DSPLINOFF(pipe));
9369 plane_config->base = base;
9371 val = I915_READ(PIPESRC(pipe));
9372 fb->width = ((val >> 16) & 0xfff) + 1;
9373 fb->height = ((val >> 0) & 0xfff) + 1;
9375 val = I915_READ(DSPSTRIDE(pipe));
9376 fb->pitches[0] = val & 0xffffffc0;
9378 aligned_height = intel_fb_align_height(dev, fb->height,
9382 plane_config->size = fb->pitches[0] * aligned_height;
9384 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9385 pipe_name(pipe), fb->width, fb->height,
9386 fb->bits_per_pixel, base, fb->pitches[0],
9387 plane_config->size);
9389 plane_config->fb = intel_fb;
9392 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
9393 struct intel_crtc_state *pipe_config)
9395 struct drm_device *dev = crtc->base.dev;
9396 struct drm_i915_private *dev_priv = dev->dev_private;
9397 enum intel_display_power_domain power_domain;
9401 power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
9402 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
9405 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9406 pipe_config->shared_dpll = NULL;
9409 tmp = I915_READ(PIPECONF(crtc->pipe));
9410 if (!(tmp & PIPECONF_ENABLE))
9413 switch (tmp & PIPECONF_BPC_MASK) {
9415 pipe_config->pipe_bpp = 18;
9418 pipe_config->pipe_bpp = 24;
9420 case PIPECONF_10BPC:
9421 pipe_config->pipe_bpp = 30;
9423 case PIPECONF_12BPC:
9424 pipe_config->pipe_bpp = 36;
9430 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
9431 pipe_config->limited_color_range = true;
9433 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
9434 struct intel_shared_dpll *pll;
9435 enum intel_dpll_id pll_id;
9437 pipe_config->has_pch_encoder = true;
9439 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
9440 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9441 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9443 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9445 if (HAS_PCH_IBX(dev_priv)) {
9447 * The pipe->pch transcoder and pch transcoder->pll
9450 pll_id = (enum intel_dpll_id) crtc->pipe;
9452 tmp = I915_READ(PCH_DPLL_SEL);
9453 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
9454 pll_id = DPLL_ID_PCH_PLL_B;
9456 pll_id= DPLL_ID_PCH_PLL_A;
9459 pipe_config->shared_dpll =
9460 intel_get_shared_dpll_by_id(dev_priv, pll_id);
9461 pll = pipe_config->shared_dpll;
9463 WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll,
9464 &pipe_config->dpll_hw_state));
9466 tmp = pipe_config->dpll_hw_state.dpll;
9467 pipe_config->pixel_multiplier =
9468 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
9469 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
9471 ironlake_pch_clock_get(crtc, pipe_config);
9473 pipe_config->pixel_multiplier = 1;
9476 intel_get_pipe_timings(crtc, pipe_config);
9477 intel_get_pipe_src_size(crtc, pipe_config);
9479 ironlake_get_pfit_config(crtc, pipe_config);
9484 intel_display_power_put(dev_priv, power_domain);
9489 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
9491 struct drm_device *dev = dev_priv->dev;
9492 struct intel_crtc *crtc;
9494 for_each_intel_crtc(dev, crtc)
9495 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
9496 pipe_name(crtc->pipe));
9498 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
9499 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
9500 I915_STATE_WARN(I915_READ(WRPLL_CTL(0)) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
9501 I915_STATE_WARN(I915_READ(WRPLL_CTL(1)) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
9502 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
9503 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
9504 "CPU PWM1 enabled\n");
9505 if (IS_HASWELL(dev))
9506 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
9507 "CPU PWM2 enabled\n");
9508 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
9509 "PCH PWM1 enabled\n");
9510 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
9511 "Utility pin enabled\n");
9512 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
9515 * In theory we can still leave IRQs enabled, as long as only the HPD
9516 * interrupts remain enabled. We used to check for that, but since it's
9517 * gen-specific and since we only disable LCPLL after we fully disable
9518 * the interrupts, the check below should be enough.
9520 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
9523 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
9525 struct drm_device *dev = dev_priv->dev;
9527 if (IS_HASWELL(dev))
9528 return I915_READ(D_COMP_HSW);
9530 return I915_READ(D_COMP_BDW);
9533 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
9535 struct drm_device *dev = dev_priv->dev;
9537 if (IS_HASWELL(dev)) {
9538 mutex_lock(&dev_priv->rps.hw_lock);
9539 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
9541 DRM_ERROR("Failed to write to D_COMP\n");
9542 mutex_unlock(&dev_priv->rps.hw_lock);
9544 I915_WRITE(D_COMP_BDW, val);
9545 POSTING_READ(D_COMP_BDW);
9550 * This function implements pieces of two sequences from BSpec:
9551 * - Sequence for display software to disable LCPLL
9552 * - Sequence for display software to allow package C8+
9553 * The steps implemented here are just the steps that actually touch the LCPLL
9554 * register. Callers should take care of disabling all the display engine
9555 * functions, doing the mode unset, fixing interrupts, etc.
9557 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
9558 bool switch_to_fclk, bool allow_power_down)
9562 assert_can_disable_lcpll(dev_priv);
9564 val = I915_READ(LCPLL_CTL);
9566 if (switch_to_fclk) {
9567 val |= LCPLL_CD_SOURCE_FCLK;
9568 I915_WRITE(LCPLL_CTL, val);
9570 if (wait_for_us(I915_READ(LCPLL_CTL) &
9571 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9572 DRM_ERROR("Switching to FCLK failed\n");
9574 val = I915_READ(LCPLL_CTL);
9577 val |= LCPLL_PLL_DISABLE;
9578 I915_WRITE(LCPLL_CTL, val);
9579 POSTING_READ(LCPLL_CTL);
9581 if (intel_wait_for_register(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 0, 1))
9582 DRM_ERROR("LCPLL still locked\n");
9584 val = hsw_read_dcomp(dev_priv);
9585 val |= D_COMP_COMP_DISABLE;
9586 hsw_write_dcomp(dev_priv, val);
9589 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
9591 DRM_ERROR("D_COMP RCOMP still in progress\n");
9593 if (allow_power_down) {
9594 val = I915_READ(LCPLL_CTL);
9595 val |= LCPLL_POWER_DOWN_ALLOW;
9596 I915_WRITE(LCPLL_CTL, val);
9597 POSTING_READ(LCPLL_CTL);
9602 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
9605 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
9609 val = I915_READ(LCPLL_CTL);
9611 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
9612 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
9616 * Make sure we're not on PC8 state before disabling PC8, otherwise
9617 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
9619 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
9621 if (val & LCPLL_POWER_DOWN_ALLOW) {
9622 val &= ~LCPLL_POWER_DOWN_ALLOW;
9623 I915_WRITE(LCPLL_CTL, val);
9624 POSTING_READ(LCPLL_CTL);
9627 val = hsw_read_dcomp(dev_priv);
9628 val |= D_COMP_COMP_FORCE;
9629 val &= ~D_COMP_COMP_DISABLE;
9630 hsw_write_dcomp(dev_priv, val);
9632 val = I915_READ(LCPLL_CTL);
9633 val &= ~LCPLL_PLL_DISABLE;
9634 I915_WRITE(LCPLL_CTL, val);
9636 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
9637 DRM_ERROR("LCPLL not locked yet\n");
9639 if (val & LCPLL_CD_SOURCE_FCLK) {
9640 val = I915_READ(LCPLL_CTL);
9641 val &= ~LCPLL_CD_SOURCE_FCLK;
9642 I915_WRITE(LCPLL_CTL, val);
9644 if (wait_for_us((I915_READ(LCPLL_CTL) &
9645 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9646 DRM_ERROR("Switching back to LCPLL failed\n");
9649 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
9650 intel_update_cdclk(dev_priv->dev);
9654 * Package states C8 and deeper are really deep PC states that can only be
9655 * reached when all the devices on the system allow it, so even if the graphics
9656 * device allows PC8+, it doesn't mean the system will actually get to these
9657 * states. Our driver only allows PC8+ when going into runtime PM.
9659 * The requirements for PC8+ are that all the outputs are disabled, the power
9660 * well is disabled and most interrupts are disabled, and these are also
9661 * requirements for runtime PM. When these conditions are met, we manually do
9662 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
9663 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
9666 * When we really reach PC8 or deeper states (not just when we allow it) we lose
9667 * the state of some registers, so when we come back from PC8+ we need to
9668 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
9669 * need to take care of the registers kept by RC6. Notice that this happens even
9670 * if we don't put the device in PCI D3 state (which is what currently happens
9671 * because of the runtime PM support).
9673 * For more, read "Display Sequences for Package C8" on the hardware
9676 void hsw_enable_pc8(struct drm_i915_private *dev_priv)
9678 struct drm_device *dev = dev_priv->dev;
9681 DRM_DEBUG_KMS("Enabling package C8+\n");
9683 if (HAS_PCH_LPT_LP(dev)) {
9684 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9685 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
9686 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9689 lpt_disable_clkout_dp(dev);
9690 hsw_disable_lcpll(dev_priv, true, true);
9693 void hsw_disable_pc8(struct drm_i915_private *dev_priv)
9695 struct drm_device *dev = dev_priv->dev;
9698 DRM_DEBUG_KMS("Disabling package C8+\n");
9700 hsw_restore_lcpll(dev_priv);
9701 lpt_init_pch_refclk(dev);
9703 if (HAS_PCH_LPT_LP(dev)) {
9704 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9705 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
9706 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9710 static void bxt_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9712 struct drm_device *dev = old_state->dev;
9713 struct intel_atomic_state *old_intel_state =
9714 to_intel_atomic_state(old_state);
9715 unsigned int req_cdclk = old_intel_state->dev_cdclk;
9717 bxt_set_cdclk(to_i915(dev), req_cdclk);
9720 /* compute the max rate for new configuration */
9721 static int ilk_max_pixel_rate(struct drm_atomic_state *state)
9723 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
9724 struct drm_i915_private *dev_priv = state->dev->dev_private;
9725 struct drm_crtc *crtc;
9726 struct drm_crtc_state *cstate;
9727 struct intel_crtc_state *crtc_state;
9728 unsigned max_pixel_rate = 0, i;
9731 memcpy(intel_state->min_pixclk, dev_priv->min_pixclk,
9732 sizeof(intel_state->min_pixclk));
9734 for_each_crtc_in_state(state, crtc, cstate, i) {
9737 crtc_state = to_intel_crtc_state(cstate);
9738 if (!crtc_state->base.enable) {
9739 intel_state->min_pixclk[i] = 0;
9743 pixel_rate = ilk_pipe_pixel_rate(crtc_state);
9745 /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
9746 if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled)
9747 pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95);
9749 intel_state->min_pixclk[i] = pixel_rate;
9752 for_each_pipe(dev_priv, pipe)
9753 max_pixel_rate = max(intel_state->min_pixclk[pipe], max_pixel_rate);
9755 return max_pixel_rate;
9758 static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
9760 struct drm_i915_private *dev_priv = dev->dev_private;
9764 if (WARN((I915_READ(LCPLL_CTL) &
9765 (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
9766 LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
9767 LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
9768 LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
9769 "trying to change cdclk frequency with cdclk not enabled\n"))
9772 mutex_lock(&dev_priv->rps.hw_lock);
9773 ret = sandybridge_pcode_write(dev_priv,
9774 BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
9775 mutex_unlock(&dev_priv->rps.hw_lock);
9777 DRM_ERROR("failed to inform pcode about cdclk change\n");
9781 val = I915_READ(LCPLL_CTL);
9782 val |= LCPLL_CD_SOURCE_FCLK;
9783 I915_WRITE(LCPLL_CTL, val);
9785 if (wait_for_us(I915_READ(LCPLL_CTL) &
9786 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9787 DRM_ERROR("Switching to FCLK failed\n");
9789 val = I915_READ(LCPLL_CTL);
9790 val &= ~LCPLL_CLK_FREQ_MASK;
9794 val |= LCPLL_CLK_FREQ_450;
9798 val |= LCPLL_CLK_FREQ_54O_BDW;
9802 val |= LCPLL_CLK_FREQ_337_5_BDW;
9806 val |= LCPLL_CLK_FREQ_675_BDW;
9810 WARN(1, "invalid cdclk frequency\n");
9814 I915_WRITE(LCPLL_CTL, val);
9816 val = I915_READ(LCPLL_CTL);
9817 val &= ~LCPLL_CD_SOURCE_FCLK;
9818 I915_WRITE(LCPLL_CTL, val);
9820 if (wait_for_us((I915_READ(LCPLL_CTL) &
9821 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9822 DRM_ERROR("Switching back to LCPLL failed\n");
9824 mutex_lock(&dev_priv->rps.hw_lock);
9825 sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
9826 mutex_unlock(&dev_priv->rps.hw_lock);
9828 I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
9830 intel_update_cdclk(dev);
9832 WARN(cdclk != dev_priv->cdclk_freq,
9833 "cdclk requested %d kHz but got %d kHz\n",
9834 cdclk, dev_priv->cdclk_freq);
9837 static int broadwell_calc_cdclk(int max_pixclk)
9839 if (max_pixclk > 540000)
9841 else if (max_pixclk > 450000)
9843 else if (max_pixclk > 337500)
9849 static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state)
9851 struct drm_i915_private *dev_priv = to_i915(state->dev);
9852 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
9853 int max_pixclk = ilk_max_pixel_rate(state);
9857 * FIXME should also account for plane ratio
9858 * once 64bpp pixel formats are supported.
9860 cdclk = broadwell_calc_cdclk(max_pixclk);
9862 if (cdclk > dev_priv->max_cdclk_freq) {
9863 DRM_DEBUG_KMS("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
9864 cdclk, dev_priv->max_cdclk_freq);
9868 intel_state->cdclk = intel_state->dev_cdclk = cdclk;
9869 if (!intel_state->active_crtcs)
9870 intel_state->dev_cdclk = broadwell_calc_cdclk(0);
9875 static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9877 struct drm_device *dev = old_state->dev;
9878 struct intel_atomic_state *old_intel_state =
9879 to_intel_atomic_state(old_state);
9880 unsigned req_cdclk = old_intel_state->dev_cdclk;
9882 broadwell_set_cdclk(dev, req_cdclk);
9885 static int skl_modeset_calc_cdclk(struct drm_atomic_state *state)
9887 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
9888 struct drm_i915_private *dev_priv = to_i915(state->dev);
9889 const int max_pixclk = ilk_max_pixel_rate(state);
9890 int vco = intel_state->cdclk_pll_vco;
9894 * FIXME should also account for plane ratio
9895 * once 64bpp pixel formats are supported.
9897 cdclk = skl_calc_cdclk(max_pixclk, vco);
9900 * FIXME move the cdclk caclulation to
9901 * compute_config() so we can fail gracegully.
9903 if (cdclk > dev_priv->max_cdclk_freq) {
9904 DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
9905 cdclk, dev_priv->max_cdclk_freq);
9906 cdclk = dev_priv->max_cdclk_freq;
9909 intel_state->cdclk = intel_state->dev_cdclk = cdclk;
9910 if (!intel_state->active_crtcs)
9911 intel_state->dev_cdclk = skl_calc_cdclk(0, vco);
9916 static void skl_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9918 struct drm_i915_private *dev_priv = to_i915(old_state->dev);
9919 struct intel_atomic_state *intel_state = to_intel_atomic_state(old_state);
9920 unsigned int req_cdclk = intel_state->dev_cdclk;
9921 unsigned int req_vco = intel_state->cdclk_pll_vco;
9923 skl_set_cdclk(dev_priv, req_cdclk, req_vco);
9926 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9927 struct intel_crtc_state *crtc_state)
9929 struct intel_encoder *intel_encoder =
9930 intel_ddi_get_crtc_new_encoder(crtc_state);
9932 if (intel_encoder->type != INTEL_OUTPUT_DSI) {
9933 if (!intel_ddi_pll_select(crtc, crtc_state))
9937 crtc->lowfreq_avail = false;
9942 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9944 struct intel_crtc_state *pipe_config)
9946 enum intel_dpll_id id;
9950 pipe_config->ddi_pll_sel = SKL_DPLL0;
9951 id = DPLL_ID_SKL_DPLL0;
9954 pipe_config->ddi_pll_sel = SKL_DPLL1;
9955 id = DPLL_ID_SKL_DPLL1;
9958 pipe_config->ddi_pll_sel = SKL_DPLL2;
9959 id = DPLL_ID_SKL_DPLL2;
9962 DRM_ERROR("Incorrect port type\n");
9966 pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9969 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9971 struct intel_crtc_state *pipe_config)
9973 enum intel_dpll_id id;
9976 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9977 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
9979 switch (pipe_config->ddi_pll_sel) {
9981 id = DPLL_ID_SKL_DPLL0;
9984 id = DPLL_ID_SKL_DPLL1;
9987 id = DPLL_ID_SKL_DPLL2;
9990 id = DPLL_ID_SKL_DPLL3;
9993 MISSING_CASE(pipe_config->ddi_pll_sel);
9997 pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
10000 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
10002 struct intel_crtc_state *pipe_config)
10004 enum intel_dpll_id id;
10006 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
10008 switch (pipe_config->ddi_pll_sel) {
10009 case PORT_CLK_SEL_WRPLL1:
10010 id = DPLL_ID_WRPLL1;
10012 case PORT_CLK_SEL_WRPLL2:
10013 id = DPLL_ID_WRPLL2;
10015 case PORT_CLK_SEL_SPLL:
10018 case PORT_CLK_SEL_LCPLL_810:
10019 id = DPLL_ID_LCPLL_810;
10021 case PORT_CLK_SEL_LCPLL_1350:
10022 id = DPLL_ID_LCPLL_1350;
10024 case PORT_CLK_SEL_LCPLL_2700:
10025 id = DPLL_ID_LCPLL_2700;
10028 MISSING_CASE(pipe_config->ddi_pll_sel);
10030 case PORT_CLK_SEL_NONE:
10034 pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
10037 static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
10038 struct intel_crtc_state *pipe_config,
10039 unsigned long *power_domain_mask)
10041 struct drm_device *dev = crtc->base.dev;
10042 struct drm_i915_private *dev_priv = dev->dev_private;
10043 enum intel_display_power_domain power_domain;
10047 * The pipe->transcoder mapping is fixed with the exception of the eDP
10048 * transcoder handled below.
10050 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
10053 * XXX: Do intel_display_power_get_if_enabled before reading this (for
10054 * consistency and less surprising code; it's in always on power).
10056 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
10057 if (tmp & TRANS_DDI_FUNC_ENABLE) {
10058 enum pipe trans_edp_pipe;
10059 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
10061 WARN(1, "unknown pipe linked to edp transcoder\n");
10062 case TRANS_DDI_EDP_INPUT_A_ONOFF:
10063 case TRANS_DDI_EDP_INPUT_A_ON:
10064 trans_edp_pipe = PIPE_A;
10066 case TRANS_DDI_EDP_INPUT_B_ONOFF:
10067 trans_edp_pipe = PIPE_B;
10069 case TRANS_DDI_EDP_INPUT_C_ONOFF:
10070 trans_edp_pipe = PIPE_C;
10074 if (trans_edp_pipe == crtc->pipe)
10075 pipe_config->cpu_transcoder = TRANSCODER_EDP;
10078 power_domain = POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder);
10079 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
10081 *power_domain_mask |= BIT(power_domain);
10083 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
10085 return tmp & PIPECONF_ENABLE;
10088 static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc,
10089 struct intel_crtc_state *pipe_config,
10090 unsigned long *power_domain_mask)
10092 struct drm_device *dev = crtc->base.dev;
10093 struct drm_i915_private *dev_priv = dev->dev_private;
10094 enum intel_display_power_domain power_domain;
10096 enum transcoder cpu_transcoder;
10099 pipe_config->has_dsi_encoder = false;
10101 for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) {
10102 if (port == PORT_A)
10103 cpu_transcoder = TRANSCODER_DSI_A;
10105 cpu_transcoder = TRANSCODER_DSI_C;
10107 power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
10108 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
10110 *power_domain_mask |= BIT(power_domain);
10113 * The PLL needs to be enabled with a valid divider
10114 * configuration, otherwise accessing DSI registers will hang
10115 * the machine. See BSpec North Display Engine
10116 * registers/MIPI[BXT]. We can break out here early, since we
10117 * need the same DSI PLL to be enabled for both DSI ports.
10119 if (!intel_dsi_pll_is_enabled(dev_priv))
10122 /* XXX: this works for video mode only */
10123 tmp = I915_READ(BXT_MIPI_PORT_CTRL(port));
10124 if (!(tmp & DPI_ENABLE))
10127 tmp = I915_READ(MIPI_CTRL(port));
10128 if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe))
10131 pipe_config->cpu_transcoder = cpu_transcoder;
10132 pipe_config->has_dsi_encoder = true;
10136 return pipe_config->has_dsi_encoder;
10139 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
10140 struct intel_crtc_state *pipe_config)
10142 struct drm_device *dev = crtc->base.dev;
10143 struct drm_i915_private *dev_priv = dev->dev_private;
10144 struct intel_shared_dpll *pll;
10148 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
10150 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
10152 if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
10153 skylake_get_ddi_pll(dev_priv, port, pipe_config);
10154 else if (IS_BROXTON(dev))
10155 bxt_get_ddi_pll(dev_priv, port, pipe_config);
10157 haswell_get_ddi_pll(dev_priv, port, pipe_config);
10159 pll = pipe_config->shared_dpll;
10161 WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll,
10162 &pipe_config->dpll_hw_state));
10166 * Haswell has only FDI/PCH transcoder A. It is which is connected to
10167 * DDI E. So just check whether this pipe is wired to DDI E and whether
10168 * the PCH transcoder is on.
10170 if (INTEL_INFO(dev)->gen < 9 &&
10171 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
10172 pipe_config->has_pch_encoder = true;
10174 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
10175 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
10176 FDI_DP_PORT_WIDTH_SHIFT) + 1;
10178 ironlake_get_fdi_m_n_config(crtc, pipe_config);
10182 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
10183 struct intel_crtc_state *pipe_config)
10185 struct drm_device *dev = crtc->base.dev;
10186 struct drm_i915_private *dev_priv = dev->dev_private;
10187 enum intel_display_power_domain power_domain;
10188 unsigned long power_domain_mask;
10191 power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
10192 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
10194 power_domain_mask = BIT(power_domain);
10196 pipe_config->shared_dpll = NULL;
10198 active = hsw_get_transcoder_state(crtc, pipe_config, &power_domain_mask);
10200 if (IS_BROXTON(dev_priv)) {
10201 bxt_get_dsi_transcoder_state(crtc, pipe_config,
10202 &power_domain_mask);
10203 WARN_ON(active && pipe_config->has_dsi_encoder);
10204 if (pipe_config->has_dsi_encoder)
10211 if (!pipe_config->has_dsi_encoder) {
10212 haswell_get_ddi_port_state(crtc, pipe_config);
10213 intel_get_pipe_timings(crtc, pipe_config);
10216 intel_get_pipe_src_size(crtc, pipe_config);
10218 pipe_config->gamma_mode =
10219 I915_READ(GAMMA_MODE(crtc->pipe)) & GAMMA_MODE_MODE_MASK;
10221 if (INTEL_INFO(dev)->gen >= 9) {
10222 skl_init_scalers(dev, crtc, pipe_config);
10225 if (INTEL_INFO(dev)->gen >= 9) {
10226 pipe_config->scaler_state.scaler_id = -1;
10227 pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
10230 power_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
10231 if (intel_display_power_get_if_enabled(dev_priv, power_domain)) {
10232 power_domain_mask |= BIT(power_domain);
10233 if (INTEL_INFO(dev)->gen >= 9)
10234 skylake_get_pfit_config(crtc, pipe_config);
10236 ironlake_get_pfit_config(crtc, pipe_config);
10239 if (IS_HASWELL(dev))
10240 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
10241 (I915_READ(IPS_CTL) & IPS_ENABLE);
10243 if (pipe_config->cpu_transcoder != TRANSCODER_EDP &&
10244 !transcoder_is_dsi(pipe_config->cpu_transcoder)) {
10245 pipe_config->pixel_multiplier =
10246 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
10248 pipe_config->pixel_multiplier = 1;
10252 for_each_power_domain(power_domain, power_domain_mask)
10253 intel_display_power_put(dev_priv, power_domain);
10258 static void i845_update_cursor(struct drm_crtc *crtc, u32 base,
10259 const struct intel_plane_state *plane_state)
10261 struct drm_device *dev = crtc->dev;
10262 struct drm_i915_private *dev_priv = dev->dev_private;
10263 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10264 uint32_t cntl = 0, size = 0;
10266 if (plane_state && plane_state->visible) {
10267 unsigned int width = plane_state->base.crtc_w;
10268 unsigned int height = plane_state->base.crtc_h;
10269 unsigned int stride = roundup_pow_of_two(width) * 4;
10273 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
10284 cntl |= CURSOR_ENABLE |
10285 CURSOR_GAMMA_ENABLE |
10286 CURSOR_FORMAT_ARGB |
10287 CURSOR_STRIDE(stride);
10289 size = (height << 12) | width;
10292 if (intel_crtc->cursor_cntl != 0 &&
10293 (intel_crtc->cursor_base != base ||
10294 intel_crtc->cursor_size != size ||
10295 intel_crtc->cursor_cntl != cntl)) {
10296 /* On these chipsets we can only modify the base/size/stride
10297 * whilst the cursor is disabled.
10299 I915_WRITE(CURCNTR(PIPE_A), 0);
10300 POSTING_READ(CURCNTR(PIPE_A));
10301 intel_crtc->cursor_cntl = 0;
10304 if (intel_crtc->cursor_base != base) {
10305 I915_WRITE(CURBASE(PIPE_A), base);
10306 intel_crtc->cursor_base = base;
10309 if (intel_crtc->cursor_size != size) {
10310 I915_WRITE(CURSIZE, size);
10311 intel_crtc->cursor_size = size;
10314 if (intel_crtc->cursor_cntl != cntl) {
10315 I915_WRITE(CURCNTR(PIPE_A), cntl);
10316 POSTING_READ(CURCNTR(PIPE_A));
10317 intel_crtc->cursor_cntl = cntl;
10321 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
10322 const struct intel_plane_state *plane_state)
10324 struct drm_device *dev = crtc->dev;
10325 struct drm_i915_private *dev_priv = dev->dev_private;
10326 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10327 int pipe = intel_crtc->pipe;
10330 if (plane_state && plane_state->visible) {
10331 cntl = MCURSOR_GAMMA_ENABLE;
10332 switch (plane_state->base.crtc_w) {
10334 cntl |= CURSOR_MODE_64_ARGB_AX;
10337 cntl |= CURSOR_MODE_128_ARGB_AX;
10340 cntl |= CURSOR_MODE_256_ARGB_AX;
10343 MISSING_CASE(plane_state->base.crtc_w);
10346 cntl |= pipe << 28; /* Connect to correct pipe */
10349 cntl |= CURSOR_PIPE_CSC_ENABLE;
10351 if (plane_state->base.rotation == BIT(DRM_ROTATE_180))
10352 cntl |= CURSOR_ROTATE_180;
10355 if (intel_crtc->cursor_cntl != cntl) {
10356 I915_WRITE(CURCNTR(pipe), cntl);
10357 POSTING_READ(CURCNTR(pipe));
10358 intel_crtc->cursor_cntl = cntl;
10361 /* and commit changes on next vblank */
10362 I915_WRITE(CURBASE(pipe), base);
10363 POSTING_READ(CURBASE(pipe));
10365 intel_crtc->cursor_base = base;
10368 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
10369 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
10370 const struct intel_plane_state *plane_state)
10372 struct drm_device *dev = crtc->dev;
10373 struct drm_i915_private *dev_priv = dev->dev_private;
10374 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10375 int pipe = intel_crtc->pipe;
10376 u32 base = intel_crtc->cursor_addr;
10380 int x = plane_state->base.crtc_x;
10381 int y = plane_state->base.crtc_y;
10384 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
10387 pos |= x << CURSOR_X_SHIFT;
10390 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
10393 pos |= y << CURSOR_Y_SHIFT;
10395 /* ILK+ do this automagically */
10396 if (HAS_GMCH_DISPLAY(dev) &&
10397 plane_state->base.rotation == BIT(DRM_ROTATE_180)) {
10398 base += (plane_state->base.crtc_h *
10399 plane_state->base.crtc_w - 1) * 4;
10403 I915_WRITE(CURPOS(pipe), pos);
10405 if (IS_845G(dev) || IS_I865G(dev))
10406 i845_update_cursor(crtc, base, plane_state);
10408 i9xx_update_cursor(crtc, base, plane_state);
10411 static bool cursor_size_ok(struct drm_device *dev,
10412 uint32_t width, uint32_t height)
10414 if (width == 0 || height == 0)
10418 * 845g/865g are special in that they are only limited by
10419 * the width of their cursors, the height is arbitrary up to
10420 * the precision of the register. Everything else requires
10421 * square cursors, limited to a few power-of-two sizes.
10423 if (IS_845G(dev) || IS_I865G(dev)) {
10424 if ((width & 63) != 0)
10427 if (width > (IS_845G(dev) ? 64 : 512))
10433 switch (width | height) {
10448 /* VESA 640x480x72Hz mode to set on the pipe */
10449 static struct drm_display_mode load_detect_mode = {
10450 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
10451 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
10454 struct drm_framebuffer *
10455 __intel_framebuffer_create(struct drm_device *dev,
10456 struct drm_mode_fb_cmd2 *mode_cmd,
10457 struct drm_i915_gem_object *obj)
10459 struct intel_framebuffer *intel_fb;
10462 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
10464 return ERR_PTR(-ENOMEM);
10466 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
10470 return &intel_fb->base;
10474 return ERR_PTR(ret);
10477 static struct drm_framebuffer *
10478 intel_framebuffer_create(struct drm_device *dev,
10479 struct drm_mode_fb_cmd2 *mode_cmd,
10480 struct drm_i915_gem_object *obj)
10482 struct drm_framebuffer *fb;
10485 ret = i915_mutex_lock_interruptible(dev);
10487 return ERR_PTR(ret);
10488 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
10489 mutex_unlock(&dev->struct_mutex);
10495 intel_framebuffer_pitch_for_width(int width, int bpp)
10497 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
10498 return ALIGN(pitch, 64);
10502 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
10504 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
10505 return PAGE_ALIGN(pitch * mode->vdisplay);
10508 static struct drm_framebuffer *
10509 intel_framebuffer_create_for_mode(struct drm_device *dev,
10510 struct drm_display_mode *mode,
10511 int depth, int bpp)
10513 struct drm_framebuffer *fb;
10514 struct drm_i915_gem_object *obj;
10515 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
10517 obj = i915_gem_object_create(dev,
10518 intel_framebuffer_size_for_mode(mode, bpp));
10520 return ERR_CAST(obj);
10522 mode_cmd.width = mode->hdisplay;
10523 mode_cmd.height = mode->vdisplay;
10524 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
10526 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
10528 fb = intel_framebuffer_create(dev, &mode_cmd, obj);
10530 drm_gem_object_unreference_unlocked(&obj->base);
10535 static struct drm_framebuffer *
10536 mode_fits_in_fbdev(struct drm_device *dev,
10537 struct drm_display_mode *mode)
10539 #ifdef CONFIG_DRM_FBDEV_EMULATION
10540 struct drm_i915_private *dev_priv = dev->dev_private;
10541 struct drm_i915_gem_object *obj;
10542 struct drm_framebuffer *fb;
10544 if (!dev_priv->fbdev)
10547 if (!dev_priv->fbdev->fb)
10550 obj = dev_priv->fbdev->fb->obj;
10553 fb = &dev_priv->fbdev->fb->base;
10554 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
10555 fb->bits_per_pixel))
10558 if (obj->base.size < mode->vdisplay * fb->pitches[0])
10561 drm_framebuffer_reference(fb);
10568 static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
10569 struct drm_crtc *crtc,
10570 struct drm_display_mode *mode,
10571 struct drm_framebuffer *fb,
10574 struct drm_plane_state *plane_state;
10575 int hdisplay, vdisplay;
10578 plane_state = drm_atomic_get_plane_state(state, crtc->primary);
10579 if (IS_ERR(plane_state))
10580 return PTR_ERR(plane_state);
10583 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
10585 hdisplay = vdisplay = 0;
10587 ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
10590 drm_atomic_set_fb_for_plane(plane_state, fb);
10591 plane_state->crtc_x = 0;
10592 plane_state->crtc_y = 0;
10593 plane_state->crtc_w = hdisplay;
10594 plane_state->crtc_h = vdisplay;
10595 plane_state->src_x = x << 16;
10596 plane_state->src_y = y << 16;
10597 plane_state->src_w = hdisplay << 16;
10598 plane_state->src_h = vdisplay << 16;
10603 bool intel_get_load_detect_pipe(struct drm_connector *connector,
10604 struct drm_display_mode *mode,
10605 struct intel_load_detect_pipe *old,
10606 struct drm_modeset_acquire_ctx *ctx)
10608 struct intel_crtc *intel_crtc;
10609 struct intel_encoder *intel_encoder =
10610 intel_attached_encoder(connector);
10611 struct drm_crtc *possible_crtc;
10612 struct drm_encoder *encoder = &intel_encoder->base;
10613 struct drm_crtc *crtc = NULL;
10614 struct drm_device *dev = encoder->dev;
10615 struct drm_framebuffer *fb;
10616 struct drm_mode_config *config = &dev->mode_config;
10617 struct drm_atomic_state *state = NULL, *restore_state = NULL;
10618 struct drm_connector_state *connector_state;
10619 struct intel_crtc_state *crtc_state;
10622 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10623 connector->base.id, connector->name,
10624 encoder->base.id, encoder->name);
10626 old->restore_state = NULL;
10629 ret = drm_modeset_lock(&config->connection_mutex, ctx);
10634 * Algorithm gets a little messy:
10636 * - if the connector already has an assigned crtc, use it (but make
10637 * sure it's on first)
10639 * - try to find the first unused crtc that can drive this connector,
10640 * and use that if we find one
10643 /* See if we already have a CRTC for this connector */
10644 if (connector->state->crtc) {
10645 crtc = connector->state->crtc;
10647 ret = drm_modeset_lock(&crtc->mutex, ctx);
10651 /* Make sure the crtc and connector are running */
10655 /* Find an unused one (if possible) */
10656 for_each_crtc(dev, possible_crtc) {
10658 if (!(encoder->possible_crtcs & (1 << i)))
10661 ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
10665 if (possible_crtc->state->enable) {
10666 drm_modeset_unlock(&possible_crtc->mutex);
10670 crtc = possible_crtc;
10675 * If we didn't find an unused CRTC, don't use any.
10678 DRM_DEBUG_KMS("no pipe available for load-detect\n");
10683 intel_crtc = to_intel_crtc(crtc);
10685 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10689 state = drm_atomic_state_alloc(dev);
10690 restore_state = drm_atomic_state_alloc(dev);
10691 if (!state || !restore_state) {
10696 state->acquire_ctx = ctx;
10697 restore_state->acquire_ctx = ctx;
10699 connector_state = drm_atomic_get_connector_state(state, connector);
10700 if (IS_ERR(connector_state)) {
10701 ret = PTR_ERR(connector_state);
10705 ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
10709 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10710 if (IS_ERR(crtc_state)) {
10711 ret = PTR_ERR(crtc_state);
10715 crtc_state->base.active = crtc_state->base.enable = true;
10718 mode = &load_detect_mode;
10720 /* We need a framebuffer large enough to accommodate all accesses
10721 * that the plane may generate whilst we perform load detection.
10722 * We can not rely on the fbcon either being present (we get called
10723 * during its initialisation to detect all boot displays, or it may
10724 * not even exist) or that it is large enough to satisfy the
10727 fb = mode_fits_in_fbdev(dev, mode);
10729 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
10730 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
10732 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
10734 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
10738 ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
10742 drm_framebuffer_unreference(fb);
10744 ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode);
10748 ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
10750 ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
10752 ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(restore_state, crtc->primary));
10754 DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
10758 ret = drm_atomic_commit(state);
10760 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
10764 old->restore_state = restore_state;
10766 /* let the connector get through one full cycle before testing */
10767 intel_wait_for_vblank(dev, intel_crtc->pipe);
10771 drm_atomic_state_free(state);
10772 drm_atomic_state_free(restore_state);
10773 restore_state = state = NULL;
10775 if (ret == -EDEADLK) {
10776 drm_modeset_backoff(ctx);
10783 void intel_release_load_detect_pipe(struct drm_connector *connector,
10784 struct intel_load_detect_pipe *old,
10785 struct drm_modeset_acquire_ctx *ctx)
10787 struct intel_encoder *intel_encoder =
10788 intel_attached_encoder(connector);
10789 struct drm_encoder *encoder = &intel_encoder->base;
10790 struct drm_atomic_state *state = old->restore_state;
10793 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10794 connector->base.id, connector->name,
10795 encoder->base.id, encoder->name);
10800 ret = drm_atomic_commit(state);
10802 DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret);
10803 drm_atomic_state_free(state);
10807 static int i9xx_pll_refclk(struct drm_device *dev,
10808 const struct intel_crtc_state *pipe_config)
10810 struct drm_i915_private *dev_priv = dev->dev_private;
10811 u32 dpll = pipe_config->dpll_hw_state.dpll;
10813 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
10814 return dev_priv->vbt.lvds_ssc_freq;
10815 else if (HAS_PCH_SPLIT(dev))
10817 else if (!IS_GEN2(dev))
10823 /* Returns the clock of the currently programmed mode of the given pipe. */
10824 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
10825 struct intel_crtc_state *pipe_config)
10827 struct drm_device *dev = crtc->base.dev;
10828 struct drm_i915_private *dev_priv = dev->dev_private;
10829 int pipe = pipe_config->cpu_transcoder;
10830 u32 dpll = pipe_config->dpll_hw_state.dpll;
10834 int refclk = i9xx_pll_refclk(dev, pipe_config);
10836 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
10837 fp = pipe_config->dpll_hw_state.fp0;
10839 fp = pipe_config->dpll_hw_state.fp1;
10841 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
10842 if (IS_PINEVIEW(dev)) {
10843 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10844 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
10846 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10847 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10850 if (!IS_GEN2(dev)) {
10851 if (IS_PINEVIEW(dev))
10852 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10853 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
10855 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
10856 DPLL_FPA01_P1_POST_DIV_SHIFT);
10858 switch (dpll & DPLL_MODE_MASK) {
10859 case DPLLB_MODE_DAC_SERIAL:
10860 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10863 case DPLLB_MODE_LVDS:
10864 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10868 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
10869 "mode\n", (int)(dpll & DPLL_MODE_MASK));
10873 if (IS_PINEVIEW(dev))
10874 port_clock = pnv_calc_dpll_params(refclk, &clock);
10876 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10878 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
10879 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
10882 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10883 DPLL_FPA01_P1_POST_DIV_SHIFT);
10885 if (lvds & LVDS_CLKB_POWER_UP)
10890 if (dpll & PLL_P1_DIVIDE_BY_TWO)
10893 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10894 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10896 if (dpll & PLL_P2_DIVIDE_BY_4)
10902 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10906 * This value includes pixel_multiplier. We will use
10907 * port_clock to compute adjusted_mode.crtc_clock in the
10908 * encoder's get_config() function.
10910 pipe_config->port_clock = port_clock;
10913 int intel_dotclock_calculate(int link_freq,
10914 const struct intel_link_m_n *m_n)
10917 * The calculation for the data clock is:
10918 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
10919 * But we want to avoid losing precison if possible, so:
10920 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
10922 * and the link clock is simpler:
10923 * link_clock = (m * link_clock) / n
10929 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
10932 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
10933 struct intel_crtc_state *pipe_config)
10935 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
10937 /* read out port_clock from the DPLL */
10938 i9xx_crtc_clock_get(crtc, pipe_config);
10941 * In case there is an active pipe without active ports,
10942 * we may need some idea for the dotclock anyway.
10943 * Calculate one based on the FDI configuration.
10945 pipe_config->base.adjusted_mode.crtc_clock =
10946 intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
10947 &pipe_config->fdi_m_n);
10950 /** Returns the currently programmed mode of the given pipe. */
10951 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
10952 struct drm_crtc *crtc)
10954 struct drm_i915_private *dev_priv = dev->dev_private;
10955 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10956 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
10957 struct drm_display_mode *mode;
10958 struct intel_crtc_state *pipe_config;
10959 int htot = I915_READ(HTOTAL(cpu_transcoder));
10960 int hsync = I915_READ(HSYNC(cpu_transcoder));
10961 int vtot = I915_READ(VTOTAL(cpu_transcoder));
10962 int vsync = I915_READ(VSYNC(cpu_transcoder));
10963 enum pipe pipe = intel_crtc->pipe;
10965 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10969 pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
10970 if (!pipe_config) {
10976 * Construct a pipe_config sufficient for getting the clock info
10977 * back out of crtc_clock_get.
10979 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
10980 * to use a real value here instead.
10982 pipe_config->cpu_transcoder = (enum transcoder) pipe;
10983 pipe_config->pixel_multiplier = 1;
10984 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(pipe));
10985 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(pipe));
10986 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(pipe));
10987 i9xx_crtc_clock_get(intel_crtc, pipe_config);
10989 mode->clock = pipe_config->port_clock / pipe_config->pixel_multiplier;
10990 mode->hdisplay = (htot & 0xffff) + 1;
10991 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
10992 mode->hsync_start = (hsync & 0xffff) + 1;
10993 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
10994 mode->vdisplay = (vtot & 0xffff) + 1;
10995 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
10996 mode->vsync_start = (vsync & 0xffff) + 1;
10997 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
10999 drm_mode_set_name(mode);
11001 kfree(pipe_config);
11006 void intel_mark_busy(struct drm_i915_private *dev_priv)
11008 if (dev_priv->mm.busy)
11011 intel_runtime_pm_get(dev_priv);
11012 i915_update_gfx_val(dev_priv);
11013 if (INTEL_GEN(dev_priv) >= 6)
11014 gen6_rps_busy(dev_priv);
11015 dev_priv->mm.busy = true;
11018 void intel_mark_idle(struct drm_i915_private *dev_priv)
11020 if (!dev_priv->mm.busy)
11023 dev_priv->mm.busy = false;
11025 if (INTEL_GEN(dev_priv) >= 6)
11026 gen6_rps_idle(dev_priv);
11028 intel_runtime_pm_put(dev_priv);
11031 static void intel_crtc_destroy(struct drm_crtc *crtc)
11033 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11034 struct drm_device *dev = crtc->dev;
11035 struct intel_flip_work *work;
11037 spin_lock_irq(&dev->event_lock);
11038 work = intel_crtc->flip_work;
11039 intel_crtc->flip_work = NULL;
11040 spin_unlock_irq(&dev->event_lock);
11043 cancel_work_sync(&work->mmio_work);
11044 cancel_work_sync(&work->unpin_work);
11048 drm_crtc_cleanup(crtc);
11053 static void intel_unpin_work_fn(struct work_struct *__work)
11055 struct intel_flip_work *work =
11056 container_of(__work, struct intel_flip_work, unpin_work);
11057 struct intel_crtc *crtc = to_intel_crtc(work->crtc);
11058 struct drm_device *dev = crtc->base.dev;
11059 struct drm_plane *primary = crtc->base.primary;
11061 if (is_mmio_work(work))
11062 flush_work(&work->mmio_work);
11064 mutex_lock(&dev->struct_mutex);
11065 intel_unpin_fb_obj(work->old_fb, primary->state->rotation);
11066 drm_gem_object_unreference(&work->pending_flip_obj->base);
11068 if (work->flip_queued_req)
11069 i915_gem_request_assign(&work->flip_queued_req, NULL);
11070 mutex_unlock(&dev->struct_mutex);
11072 intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit);
11073 intel_fbc_post_update(crtc);
11074 drm_framebuffer_unreference(work->old_fb);
11076 BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
11077 atomic_dec(&crtc->unpin_work_count);
11082 /* Is 'a' after or equal to 'b'? */
11083 static bool g4x_flip_count_after_eq(u32 a, u32 b)
11085 return !((a - b) & 0x80000000);
11088 static bool __pageflip_finished_cs(struct intel_crtc *crtc,
11089 struct intel_flip_work *work)
11091 struct drm_device *dev = crtc->base.dev;
11092 struct drm_i915_private *dev_priv = dev->dev_private;
11093 unsigned reset_counter;
11095 reset_counter = i915_reset_counter(&dev_priv->gpu_error);
11096 if (crtc->reset_counter != reset_counter)
11100 * The relevant registers doen't exist on pre-ctg.
11101 * As the flip done interrupt doesn't trigger for mmio
11102 * flips on gmch platforms, a flip count check isn't
11103 * really needed there. But since ctg has the registers,
11104 * include it in the check anyway.
11106 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
11110 * BDW signals flip done immediately if the plane
11111 * is disabled, even if the plane enable is already
11112 * armed to occur at the next vblank :(
11116 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
11117 * used the same base address. In that case the mmio flip might
11118 * have completed, but the CS hasn't even executed the flip yet.
11120 * A flip count check isn't enough as the CS might have updated
11121 * the base address just after start of vblank, but before we
11122 * managed to process the interrupt. This means we'd complete the
11123 * CS flip too soon.
11125 * Combining both checks should get us a good enough result. It may
11126 * still happen that the CS flip has been executed, but has not
11127 * yet actually completed. But in case the base address is the same
11128 * anyway, we don't really care.
11130 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
11131 crtc->flip_work->gtt_offset &&
11132 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)),
11133 crtc->flip_work->flip_count);
11137 __pageflip_finished_mmio(struct intel_crtc *crtc,
11138 struct intel_flip_work *work)
11141 * MMIO work completes when vblank is different from
11142 * flip_queued_vblank.
11144 * Reset counter value doesn't matter, this is handled by
11145 * i915_wait_request finishing early, so no need to handle
11148 return intel_crtc_get_vblank_counter(crtc) != work->flip_queued_vblank;
11152 static bool pageflip_finished(struct intel_crtc *crtc,
11153 struct intel_flip_work *work)
11155 if (!atomic_read(&work->pending))
11160 if (is_mmio_work(work))
11161 return __pageflip_finished_mmio(crtc, work);
11163 return __pageflip_finished_cs(crtc, work);
11166 void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe)
11168 struct drm_device *dev = dev_priv->dev;
11169 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11170 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11171 struct intel_flip_work *work;
11172 unsigned long flags;
11174 /* Ignore early vblank irqs */
11179 * This is called both by irq handlers and the reset code (to complete
11180 * lost pageflips) so needs the full irqsave spinlocks.
11182 spin_lock_irqsave(&dev->event_lock, flags);
11183 work = intel_crtc->flip_work;
11185 if (work != NULL &&
11186 !is_mmio_work(work) &&
11187 pageflip_finished(intel_crtc, work))
11188 page_flip_completed(intel_crtc);
11190 spin_unlock_irqrestore(&dev->event_lock, flags);
11193 void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
11195 struct drm_device *dev = dev_priv->dev;
11196 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11197 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11198 struct intel_flip_work *work;
11199 unsigned long flags;
11201 /* Ignore early vblank irqs */
11206 * This is called both by irq handlers and the reset code (to complete
11207 * lost pageflips) so needs the full irqsave spinlocks.
11209 spin_lock_irqsave(&dev->event_lock, flags);
11210 work = intel_crtc->flip_work;
11212 if (work != NULL &&
11213 is_mmio_work(work) &&
11214 pageflip_finished(intel_crtc, work))
11215 page_flip_completed(intel_crtc);
11217 spin_unlock_irqrestore(&dev->event_lock, flags);
11220 static inline void intel_mark_page_flip_active(struct intel_crtc *crtc,
11221 struct intel_flip_work *work)
11223 work->flip_queued_vblank = intel_crtc_get_vblank_counter(crtc);
11225 /* Ensure that the work item is consistent when activating it ... */
11226 smp_mb__before_atomic();
11227 atomic_set(&work->pending, 1);
11230 static int intel_gen2_queue_flip(struct drm_device *dev,
11231 struct drm_crtc *crtc,
11232 struct drm_framebuffer *fb,
11233 struct drm_i915_gem_object *obj,
11234 struct drm_i915_gem_request *req,
11237 struct intel_engine_cs *engine = req->engine;
11238 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11242 ret = intel_ring_begin(req, 6);
11246 /* Can't queue multiple flips, so wait for the previous
11247 * one to finish before executing the next.
11249 if (intel_crtc->plane)
11250 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
11252 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
11253 intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask);
11254 intel_ring_emit(engine, MI_NOOP);
11255 intel_ring_emit(engine, MI_DISPLAY_FLIP |
11256 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
11257 intel_ring_emit(engine, fb->pitches[0]);
11258 intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset);
11259 intel_ring_emit(engine, 0); /* aux display base address, unused */
11264 static int intel_gen3_queue_flip(struct drm_device *dev,
11265 struct drm_crtc *crtc,
11266 struct drm_framebuffer *fb,
11267 struct drm_i915_gem_object *obj,
11268 struct drm_i915_gem_request *req,
11271 struct intel_engine_cs *engine = req->engine;
11272 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11276 ret = intel_ring_begin(req, 6);
11280 if (intel_crtc->plane)
11281 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
11283 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
11284 intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask);
11285 intel_ring_emit(engine, MI_NOOP);
11286 intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 |
11287 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
11288 intel_ring_emit(engine, fb->pitches[0]);
11289 intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset);
11290 intel_ring_emit(engine, MI_NOOP);
11295 static int intel_gen4_queue_flip(struct drm_device *dev,
11296 struct drm_crtc *crtc,
11297 struct drm_framebuffer *fb,
11298 struct drm_i915_gem_object *obj,
11299 struct drm_i915_gem_request *req,
11302 struct intel_engine_cs *engine = req->engine;
11303 struct drm_i915_private *dev_priv = dev->dev_private;
11304 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11305 uint32_t pf, pipesrc;
11308 ret = intel_ring_begin(req, 4);
11312 /* i965+ uses the linear or tiled offsets from the
11313 * Display Registers (which do not change across a page-flip)
11314 * so we need only reprogram the base address.
11316 intel_ring_emit(engine, MI_DISPLAY_FLIP |
11317 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
11318 intel_ring_emit(engine, fb->pitches[0]);
11319 intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset |
11322 /* XXX Enabling the panel-fitter across page-flip is so far
11323 * untested on non-native modes, so ignore it for now.
11324 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
11327 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
11328 intel_ring_emit(engine, pf | pipesrc);
11333 static int intel_gen6_queue_flip(struct drm_device *dev,
11334 struct drm_crtc *crtc,
11335 struct drm_framebuffer *fb,
11336 struct drm_i915_gem_object *obj,
11337 struct drm_i915_gem_request *req,
11340 struct intel_engine_cs *engine = req->engine;
11341 struct drm_i915_private *dev_priv = dev->dev_private;
11342 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11343 uint32_t pf, pipesrc;
11346 ret = intel_ring_begin(req, 4);
11350 intel_ring_emit(engine, MI_DISPLAY_FLIP |
11351 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
11352 intel_ring_emit(engine, fb->pitches[0] | obj->tiling_mode);
11353 intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset);
11355 /* Contrary to the suggestions in the documentation,
11356 * "Enable Panel Fitter" does not seem to be required when page
11357 * flipping with a non-native mode, and worse causes a normal
11359 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
11362 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
11363 intel_ring_emit(engine, pf | pipesrc);
11368 static int intel_gen7_queue_flip(struct drm_device *dev,
11369 struct drm_crtc *crtc,
11370 struct drm_framebuffer *fb,
11371 struct drm_i915_gem_object *obj,
11372 struct drm_i915_gem_request *req,
11375 struct intel_engine_cs *engine = req->engine;
11376 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11377 uint32_t plane_bit = 0;
11380 switch (intel_crtc->plane) {
11382 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
11385 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
11388 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
11391 WARN_ONCE(1, "unknown plane in flip command\n");
11396 if (engine->id == RCS) {
11399 * On Gen 8, SRM is now taking an extra dword to accommodate
11400 * 48bits addresses, and we need a NOOP for the batch size to
11408 * BSpec MI_DISPLAY_FLIP for IVB:
11409 * "The full packet must be contained within the same cache line."
11411 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
11412 * cacheline, if we ever start emitting more commands before
11413 * the MI_DISPLAY_FLIP we may need to first emit everything else,
11414 * then do the cacheline alignment, and finally emit the
11417 ret = intel_ring_cacheline_align(req);
11421 ret = intel_ring_begin(req, len);
11425 /* Unmask the flip-done completion message. Note that the bspec says that
11426 * we should do this for both the BCS and RCS, and that we must not unmask
11427 * more than one flip event at any time (or ensure that one flip message
11428 * can be sent by waiting for flip-done prior to queueing new flips).
11429 * Experimentation says that BCS works despite DERRMR masking all
11430 * flip-done completion events and that unmasking all planes at once
11431 * for the RCS also doesn't appear to drop events. Setting the DERRMR
11432 * to zero does lead to lockups within MI_DISPLAY_FLIP.
11434 if (engine->id == RCS) {
11435 intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1));
11436 intel_ring_emit_reg(engine, DERRMR);
11437 intel_ring_emit(engine, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
11438 DERRMR_PIPEB_PRI_FLIP_DONE |
11439 DERRMR_PIPEC_PRI_FLIP_DONE));
11441 intel_ring_emit(engine, MI_STORE_REGISTER_MEM_GEN8 |
11442 MI_SRM_LRM_GLOBAL_GTT);
11444 intel_ring_emit(engine, MI_STORE_REGISTER_MEM |
11445 MI_SRM_LRM_GLOBAL_GTT);
11446 intel_ring_emit_reg(engine, DERRMR);
11447 intel_ring_emit(engine, engine->scratch.gtt_offset + 256);
11448 if (IS_GEN8(dev)) {
11449 intel_ring_emit(engine, 0);
11450 intel_ring_emit(engine, MI_NOOP);
11454 intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 | plane_bit);
11455 intel_ring_emit(engine, (fb->pitches[0] | obj->tiling_mode));
11456 intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset);
11457 intel_ring_emit(engine, (MI_NOOP));
11462 static bool use_mmio_flip(struct intel_engine_cs *engine,
11463 struct drm_i915_gem_object *obj)
11465 struct reservation_object *resv;
11468 * This is not being used for older platforms, because
11469 * non-availability of flip done interrupt forces us to use
11470 * CS flips. Older platforms derive flip done using some clever
11471 * tricks involving the flip_pending status bits and vblank irqs.
11472 * So using MMIO flips there would disrupt this mechanism.
11475 if (engine == NULL)
11478 if (INTEL_GEN(engine->i915) < 5)
11481 if (i915.use_mmio_flip < 0)
11483 else if (i915.use_mmio_flip > 0)
11485 else if (i915.enable_execlists)
11488 resv = i915_gem_object_get_dmabuf_resv(obj);
11489 if (resv && !reservation_object_test_signaled_rcu(resv, false))
11492 return engine != i915_gem_request_get_engine(obj->last_write_req);
11495 static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
11496 unsigned int rotation,
11497 struct intel_flip_work *work)
11499 struct drm_device *dev = intel_crtc->base.dev;
11500 struct drm_i915_private *dev_priv = dev->dev_private;
11501 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
11502 const enum pipe pipe = intel_crtc->pipe;
11503 u32 ctl, stride, tile_height;
11505 ctl = I915_READ(PLANE_CTL(pipe, 0));
11506 ctl &= ~PLANE_CTL_TILED_MASK;
11507 switch (fb->modifier[0]) {
11508 case DRM_FORMAT_MOD_NONE:
11510 case I915_FORMAT_MOD_X_TILED:
11511 ctl |= PLANE_CTL_TILED_X;
11513 case I915_FORMAT_MOD_Y_TILED:
11514 ctl |= PLANE_CTL_TILED_Y;
11516 case I915_FORMAT_MOD_Yf_TILED:
11517 ctl |= PLANE_CTL_TILED_YF;
11520 MISSING_CASE(fb->modifier[0]);
11524 * The stride is either expressed as a multiple of 64 bytes chunks for
11525 * linear buffers or in number of tiles for tiled buffers.
11527 if (intel_rotation_90_or_270(rotation)) {
11528 /* stride = Surface height in tiles */
11529 tile_height = intel_tile_height(dev_priv, fb->modifier[0], 0);
11530 stride = DIV_ROUND_UP(fb->height, tile_height);
11532 stride = fb->pitches[0] /
11533 intel_fb_stride_alignment(dev_priv, fb->modifier[0],
11538 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
11539 * PLANE_SURF updates, the update is then guaranteed to be atomic.
11541 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
11542 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
11544 I915_WRITE(PLANE_SURF(pipe, 0), work->gtt_offset);
11545 POSTING_READ(PLANE_SURF(pipe, 0));
11548 static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc,
11549 struct intel_flip_work *work)
11551 struct drm_device *dev = intel_crtc->base.dev;
11552 struct drm_i915_private *dev_priv = dev->dev_private;
11553 struct intel_framebuffer *intel_fb =
11554 to_intel_framebuffer(intel_crtc->base.primary->fb);
11555 struct drm_i915_gem_object *obj = intel_fb->obj;
11556 i915_reg_t reg = DSPCNTR(intel_crtc->plane);
11559 dspcntr = I915_READ(reg);
11561 if (obj->tiling_mode != I915_TILING_NONE)
11562 dspcntr |= DISPPLANE_TILED;
11564 dspcntr &= ~DISPPLANE_TILED;
11566 I915_WRITE(reg, dspcntr);
11568 I915_WRITE(DSPSURF(intel_crtc->plane), work->gtt_offset);
11569 POSTING_READ(DSPSURF(intel_crtc->plane));
11572 static void intel_mmio_flip_work_func(struct work_struct *w)
11574 struct intel_flip_work *work =
11575 container_of(w, struct intel_flip_work, mmio_work);
11576 struct intel_crtc *crtc = to_intel_crtc(work->crtc);
11577 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
11578 struct intel_framebuffer *intel_fb =
11579 to_intel_framebuffer(crtc->base.primary->fb);
11580 struct drm_i915_gem_object *obj = intel_fb->obj;
11581 struct reservation_object *resv;
11583 if (work->flip_queued_req)
11584 WARN_ON(__i915_wait_request(work->flip_queued_req,
11586 &dev_priv->rps.mmioflips));
11588 /* For framebuffer backed by dmabuf, wait for fence */
11589 resv = i915_gem_object_get_dmabuf_resv(obj);
11591 WARN_ON(reservation_object_wait_timeout_rcu(resv, false, false,
11592 MAX_SCHEDULE_TIMEOUT) < 0);
11594 intel_pipe_update_start(crtc);
11596 if (INTEL_GEN(dev_priv) >= 9)
11597 skl_do_mmio_flip(crtc, work->rotation, work);
11599 /* use_mmio_flip() retricts MMIO flips to ilk+ */
11600 ilk_do_mmio_flip(crtc, work);
11602 intel_pipe_update_end(crtc, work);
11605 static int intel_default_queue_flip(struct drm_device *dev,
11606 struct drm_crtc *crtc,
11607 struct drm_framebuffer *fb,
11608 struct drm_i915_gem_object *obj,
11609 struct drm_i915_gem_request *req,
11615 static bool __pageflip_stall_check_cs(struct drm_i915_private *dev_priv,
11616 struct intel_crtc *intel_crtc,
11617 struct intel_flip_work *work)
11621 if (!atomic_read(&work->pending))
11626 vblank = intel_crtc_get_vblank_counter(intel_crtc);
11627 if (work->flip_ready_vblank == 0) {
11628 if (work->flip_queued_req &&
11629 !i915_gem_request_completed(work->flip_queued_req, true))
11632 work->flip_ready_vblank = vblank;
11635 if (vblank - work->flip_ready_vblank < 3)
11638 /* Potential stall - if we see that the flip has happened,
11639 * assume a missed interrupt. */
11640 if (INTEL_GEN(dev_priv) >= 4)
11641 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
11643 addr = I915_READ(DSPADDR(intel_crtc->plane));
11645 /* There is a potential issue here with a false positive after a flip
11646 * to the same address. We could address this by checking for a
11647 * non-incrementing frame counter.
11649 return addr == work->gtt_offset;
11652 void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe)
11654 struct drm_device *dev = dev_priv->dev;
11655 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11656 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11657 struct intel_flip_work *work;
11659 WARN_ON(!in_interrupt());
11664 spin_lock(&dev->event_lock);
11665 work = intel_crtc->flip_work;
11667 if (work != NULL && !is_mmio_work(work) &&
11668 __pageflip_stall_check_cs(dev_priv, intel_crtc, work)) {
11670 "Kicking stuck page flip: queued at %d, now %d\n",
11671 work->flip_queued_vblank, intel_crtc_get_vblank_counter(intel_crtc));
11672 page_flip_completed(intel_crtc);
11676 if (work != NULL && !is_mmio_work(work) &&
11677 intel_crtc_get_vblank_counter(intel_crtc) - work->flip_queued_vblank > 1)
11678 intel_queue_rps_boost_for_request(work->flip_queued_req);
11679 spin_unlock(&dev->event_lock);
11682 static int intel_crtc_page_flip(struct drm_crtc *crtc,
11683 struct drm_framebuffer *fb,
11684 struct drm_pending_vblank_event *event,
11685 uint32_t page_flip_flags)
11687 struct drm_device *dev = crtc->dev;
11688 struct drm_i915_private *dev_priv = dev->dev_private;
11689 struct drm_framebuffer *old_fb = crtc->primary->fb;
11690 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11691 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11692 struct drm_plane *primary = crtc->primary;
11693 enum pipe pipe = intel_crtc->pipe;
11694 struct intel_flip_work *work;
11695 struct intel_engine_cs *engine;
11697 struct drm_i915_gem_request *request = NULL;
11701 * drm_mode_page_flip_ioctl() should already catch this, but double
11702 * check to be safe. In the future we may enable pageflipping from
11703 * a disabled primary plane.
11705 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
11708 /* Can't change pixel format via MI display flips. */
11709 if (fb->pixel_format != crtc->primary->fb->pixel_format)
11713 * TILEOFF/LINOFF registers can't be changed via MI display flips.
11714 * Note that pitch changes could also affect these register.
11716 if (INTEL_INFO(dev)->gen > 3 &&
11717 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
11718 fb->pitches[0] != crtc->primary->fb->pitches[0]))
11721 if (i915_terminally_wedged(&dev_priv->gpu_error))
11724 work = kzalloc(sizeof(*work), GFP_KERNEL);
11728 work->event = event;
11730 work->old_fb = old_fb;
11731 INIT_WORK(&work->unpin_work, intel_unpin_work_fn);
11733 ret = drm_crtc_vblank_get(crtc);
11737 /* We borrow the event spin lock for protecting flip_work */
11738 spin_lock_irq(&dev->event_lock);
11739 if (intel_crtc->flip_work) {
11740 /* Before declaring the flip queue wedged, check if
11741 * the hardware completed the operation behind our backs.
11743 if (pageflip_finished(intel_crtc, intel_crtc->flip_work)) {
11744 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
11745 page_flip_completed(intel_crtc);
11747 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
11748 spin_unlock_irq(&dev->event_lock);
11750 drm_crtc_vblank_put(crtc);
11755 intel_crtc->flip_work = work;
11756 spin_unlock_irq(&dev->event_lock);
11758 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
11759 flush_workqueue(dev_priv->wq);
11761 /* Reference the objects for the scheduled work. */
11762 drm_framebuffer_reference(work->old_fb);
11763 drm_gem_object_reference(&obj->base);
11765 crtc->primary->fb = fb;
11766 update_state_fb(crtc->primary);
11768 intel_fbc_pre_update(intel_crtc, intel_crtc->config,
11769 to_intel_plane_state(primary->state));
11771 work->pending_flip_obj = obj;
11773 ret = i915_mutex_lock_interruptible(dev);
11777 intel_crtc->reset_counter = i915_reset_counter(&dev_priv->gpu_error);
11778 if (__i915_reset_in_progress_or_wedged(intel_crtc->reset_counter)) {
11783 atomic_inc(&intel_crtc->unpin_work_count);
11785 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
11786 work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(pipe)) + 1;
11788 if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
11789 engine = &dev_priv->engine[BCS];
11790 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
11791 /* vlv: DISPLAY_FLIP fails to change tiling */
11793 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
11794 engine = &dev_priv->engine[BCS];
11795 } else if (INTEL_INFO(dev)->gen >= 7) {
11796 engine = i915_gem_request_get_engine(obj->last_write_req);
11797 if (engine == NULL || engine->id != RCS)
11798 engine = &dev_priv->engine[BCS];
11800 engine = &dev_priv->engine[RCS];
11803 mmio_flip = use_mmio_flip(engine, obj);
11805 /* When using CS flips, we want to emit semaphores between rings.
11806 * However, when using mmio flips we will create a task to do the
11807 * synchronisation, so all we want here is to pin the framebuffer
11808 * into the display plane and skip any waits.
11811 ret = i915_gem_object_sync(obj, engine, &request);
11812 if (!ret && !request) {
11813 request = i915_gem_request_alloc(engine, NULL);
11814 ret = PTR_ERR_OR_ZERO(request);
11818 goto cleanup_pending;
11821 ret = intel_pin_and_fence_fb_obj(fb, primary->state->rotation);
11823 goto cleanup_pending;
11825 work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary),
11827 work->gtt_offset += intel_crtc->dspaddr_offset;
11828 work->rotation = crtc->primary->state->rotation;
11831 INIT_WORK(&work->mmio_work, intel_mmio_flip_work_func);
11833 i915_gem_request_assign(&work->flip_queued_req,
11834 obj->last_write_req);
11836 schedule_work(&work->mmio_work);
11838 i915_gem_request_assign(&work->flip_queued_req, request);
11839 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
11842 goto cleanup_unpin;
11844 intel_mark_page_flip_active(intel_crtc, work);
11846 i915_add_request_no_flush(request);
11849 i915_gem_track_fb(intel_fb_obj(old_fb), obj,
11850 to_intel_plane(primary)->frontbuffer_bit);
11851 mutex_unlock(&dev->struct_mutex);
11853 intel_frontbuffer_flip_prepare(dev,
11854 to_intel_plane(primary)->frontbuffer_bit);
11856 trace_i915_flip_request(intel_crtc->plane, obj);
11861 intel_unpin_fb_obj(fb, crtc->primary->state->rotation);
11863 if (!IS_ERR_OR_NULL(request))
11864 i915_add_request_no_flush(request);
11865 atomic_dec(&intel_crtc->unpin_work_count);
11866 mutex_unlock(&dev->struct_mutex);
11868 crtc->primary->fb = old_fb;
11869 update_state_fb(crtc->primary);
11871 drm_gem_object_unreference_unlocked(&obj->base);
11872 drm_framebuffer_unreference(work->old_fb);
11874 spin_lock_irq(&dev->event_lock);
11875 intel_crtc->flip_work = NULL;
11876 spin_unlock_irq(&dev->event_lock);
11878 drm_crtc_vblank_put(crtc);
11883 struct drm_atomic_state *state;
11884 struct drm_plane_state *plane_state;
11887 state = drm_atomic_state_alloc(dev);
11890 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
11893 plane_state = drm_atomic_get_plane_state(state, primary);
11894 ret = PTR_ERR_OR_ZERO(plane_state);
11896 drm_atomic_set_fb_for_plane(plane_state, fb);
11898 ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
11900 ret = drm_atomic_commit(state);
11903 if (ret == -EDEADLK) {
11904 drm_modeset_backoff(state->acquire_ctx);
11905 drm_atomic_state_clear(state);
11910 drm_atomic_state_free(state);
11912 if (ret == 0 && event) {
11913 spin_lock_irq(&dev->event_lock);
11914 drm_crtc_send_vblank_event(crtc, event);
11915 spin_unlock_irq(&dev->event_lock);
11923 * intel_wm_need_update - Check whether watermarks need updating
11924 * @plane: drm plane
11925 * @state: new plane state
11927 * Check current plane state versus the new one to determine whether
11928 * watermarks need to be recalculated.
11930 * Returns true or false.
11932 static bool intel_wm_need_update(struct drm_plane *plane,
11933 struct drm_plane_state *state)
11935 struct intel_plane_state *new = to_intel_plane_state(state);
11936 struct intel_plane_state *cur = to_intel_plane_state(plane->state);
11938 /* Update watermarks on tiling or size changes. */
11939 if (new->visible != cur->visible)
11942 if (!cur->base.fb || !new->base.fb)
11945 if (cur->base.fb->modifier[0] != new->base.fb->modifier[0] ||
11946 cur->base.rotation != new->base.rotation ||
11947 drm_rect_width(&new->src) != drm_rect_width(&cur->src) ||
11948 drm_rect_height(&new->src) != drm_rect_height(&cur->src) ||
11949 drm_rect_width(&new->dst) != drm_rect_width(&cur->dst) ||
11950 drm_rect_height(&new->dst) != drm_rect_height(&cur->dst))
11956 static bool needs_scaling(struct intel_plane_state *state)
11958 int src_w = drm_rect_width(&state->src) >> 16;
11959 int src_h = drm_rect_height(&state->src) >> 16;
11960 int dst_w = drm_rect_width(&state->dst);
11961 int dst_h = drm_rect_height(&state->dst);
11963 return (src_w != dst_w || src_h != dst_h);
11966 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
11967 struct drm_plane_state *plane_state)
11969 struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc_state);
11970 struct drm_crtc *crtc = crtc_state->crtc;
11971 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11972 struct drm_plane *plane = plane_state->plane;
11973 struct drm_device *dev = crtc->dev;
11974 struct drm_i915_private *dev_priv = to_i915(dev);
11975 struct intel_plane_state *old_plane_state =
11976 to_intel_plane_state(plane->state);
11977 bool mode_changed = needs_modeset(crtc_state);
11978 bool was_crtc_enabled = crtc->state->active;
11979 bool is_crtc_enabled = crtc_state->active;
11980 bool turn_off, turn_on, visible, was_visible;
11981 struct drm_framebuffer *fb = plane_state->fb;
11984 if (crtc_state && INTEL_INFO(dev)->gen >= 9 &&
11985 plane->type != DRM_PLANE_TYPE_CURSOR) {
11986 ret = skl_update_scaler_plane(
11987 to_intel_crtc_state(crtc_state),
11988 to_intel_plane_state(plane_state));
11993 was_visible = old_plane_state->visible;
11994 visible = to_intel_plane_state(plane_state)->visible;
11996 if (!was_crtc_enabled && WARN_ON(was_visible))
11997 was_visible = false;
12000 * Visibility is calculated as if the crtc was on, but
12001 * after scaler setup everything depends on it being off
12002 * when the crtc isn't active.
12004 * FIXME this is wrong for watermarks. Watermarks should also
12005 * be computed as if the pipe would be active. Perhaps move
12006 * per-plane wm computation to the .check_plane() hook, and
12007 * only combine the results from all planes in the current place?
12009 if (!is_crtc_enabled)
12010 to_intel_plane_state(plane_state)->visible = visible = false;
12012 if (!was_visible && !visible)
12015 if (fb != old_plane_state->base.fb)
12016 pipe_config->fb_changed = true;
12018 turn_off = was_visible && (!visible || mode_changed);
12019 turn_on = visible && (!was_visible || mode_changed);
12021 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] has [PLANE:%d:%s] with fb %i\n",
12022 intel_crtc->base.base.id,
12023 intel_crtc->base.name,
12024 plane->base.id, plane->name,
12025 fb ? fb->base.id : -1);
12027 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
12028 plane->base.id, plane->name,
12029 was_visible, visible,
12030 turn_off, turn_on, mode_changed);
12033 pipe_config->update_wm_pre = true;
12035 /* must disable cxsr around plane enable/disable */
12036 if (plane->type != DRM_PLANE_TYPE_CURSOR)
12037 pipe_config->disable_cxsr = true;
12038 } else if (turn_off) {
12039 pipe_config->update_wm_post = true;
12041 /* must disable cxsr around plane enable/disable */
12042 if (plane->type != DRM_PLANE_TYPE_CURSOR)
12043 pipe_config->disable_cxsr = true;
12044 } else if (intel_wm_need_update(plane, plane_state)) {
12045 /* FIXME bollocks */
12046 pipe_config->update_wm_pre = true;
12047 pipe_config->update_wm_post = true;
12050 /* Pre-gen9 platforms need two-step watermark updates */
12051 if ((pipe_config->update_wm_pre || pipe_config->update_wm_post) &&
12052 INTEL_INFO(dev)->gen < 9 && dev_priv->display.optimize_watermarks)
12053 to_intel_crtc_state(crtc_state)->wm.need_postvbl_update = true;
12055 if (visible || was_visible)
12056 pipe_config->fb_bits |= to_intel_plane(plane)->frontbuffer_bit;
12059 * WaCxSRDisabledForSpriteScaling:ivb
12061 * cstate->update_wm was already set above, so this flag will
12062 * take effect when we commit and program watermarks.
12064 if (plane->type == DRM_PLANE_TYPE_OVERLAY && IS_IVYBRIDGE(dev) &&
12065 needs_scaling(to_intel_plane_state(plane_state)) &&
12066 !needs_scaling(old_plane_state))
12067 pipe_config->disable_lp_wm = true;
12072 static bool encoders_cloneable(const struct intel_encoder *a,
12073 const struct intel_encoder *b)
12075 /* masks could be asymmetric, so check both ways */
12076 return a == b || (a->cloneable & (1 << b->type) &&
12077 b->cloneable & (1 << a->type));
12080 static bool check_single_encoder_cloning(struct drm_atomic_state *state,
12081 struct intel_crtc *crtc,
12082 struct intel_encoder *encoder)
12084 struct intel_encoder *source_encoder;
12085 struct drm_connector *connector;
12086 struct drm_connector_state *connector_state;
12089 for_each_connector_in_state(state, connector, connector_state, i) {
12090 if (connector_state->crtc != &crtc->base)
12094 to_intel_encoder(connector_state->best_encoder);
12095 if (!encoders_cloneable(encoder, source_encoder))
12102 static bool check_encoder_cloning(struct drm_atomic_state *state,
12103 struct intel_crtc *crtc)
12105 struct intel_encoder *encoder;
12106 struct drm_connector *connector;
12107 struct drm_connector_state *connector_state;
12110 for_each_connector_in_state(state, connector, connector_state, i) {
12111 if (connector_state->crtc != &crtc->base)
12114 encoder = to_intel_encoder(connector_state->best_encoder);
12115 if (!check_single_encoder_cloning(state, crtc, encoder))
12122 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
12123 struct drm_crtc_state *crtc_state)
12125 struct drm_device *dev = crtc->dev;
12126 struct drm_i915_private *dev_priv = dev->dev_private;
12127 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12128 struct intel_crtc_state *pipe_config =
12129 to_intel_crtc_state(crtc_state);
12130 struct drm_atomic_state *state = crtc_state->state;
12132 bool mode_changed = needs_modeset(crtc_state);
12134 if (mode_changed && !check_encoder_cloning(state, intel_crtc)) {
12135 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
12139 if (mode_changed && !crtc_state->active)
12140 pipe_config->update_wm_post = true;
12142 if (mode_changed && crtc_state->enable &&
12143 dev_priv->display.crtc_compute_clock &&
12144 !WARN_ON(pipe_config->shared_dpll)) {
12145 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
12151 if (crtc_state->color_mgmt_changed) {
12152 ret = intel_color_check(crtc, crtc_state);
12158 if (dev_priv->display.compute_pipe_wm) {
12159 ret = dev_priv->display.compute_pipe_wm(pipe_config);
12161 DRM_DEBUG_KMS("Target pipe watermarks are invalid\n");
12166 if (dev_priv->display.compute_intermediate_wm &&
12167 !to_intel_atomic_state(state)->skip_intermediate_wm) {
12168 if (WARN_ON(!dev_priv->display.compute_pipe_wm))
12172 * Calculate 'intermediate' watermarks that satisfy both the
12173 * old state and the new state. We can program these
12176 ret = dev_priv->display.compute_intermediate_wm(crtc->dev,
12180 DRM_DEBUG_KMS("No valid intermediate pipe watermarks are possible\n");
12183 } else if (dev_priv->display.compute_intermediate_wm) {
12184 if (HAS_PCH_SPLIT(dev_priv) && INTEL_GEN(dev_priv) < 9)
12185 pipe_config->wm.ilk.intermediate = pipe_config->wm.ilk.optimal;
12188 if (INTEL_INFO(dev)->gen >= 9) {
12190 ret = skl_update_scaler_crtc(pipe_config);
12193 ret = intel_atomic_setup_scalers(dev, intel_crtc,
12200 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
12201 .mode_set_base_atomic = intel_pipe_set_base_atomic,
12202 .atomic_begin = intel_begin_crtc_commit,
12203 .atomic_flush = intel_finish_crtc_commit,
12204 .atomic_check = intel_crtc_atomic_check,
12207 static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
12209 struct intel_connector *connector;
12211 for_each_intel_connector(dev, connector) {
12212 if (connector->base.state->crtc)
12213 drm_connector_unreference(&connector->base);
12215 if (connector->base.encoder) {
12216 connector->base.state->best_encoder =
12217 connector->base.encoder;
12218 connector->base.state->crtc =
12219 connector->base.encoder->crtc;
12221 drm_connector_reference(&connector->base);
12223 connector->base.state->best_encoder = NULL;
12224 connector->base.state->crtc = NULL;
12230 connected_sink_compute_bpp(struct intel_connector *connector,
12231 struct intel_crtc_state *pipe_config)
12233 int bpp = pipe_config->pipe_bpp;
12235 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
12236 connector->base.base.id,
12237 connector->base.name);
12239 /* Don't use an invalid EDID bpc value */
12240 if (connector->base.display_info.bpc &&
12241 connector->base.display_info.bpc * 3 < bpp) {
12242 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
12243 bpp, connector->base.display_info.bpc*3);
12244 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
12247 /* Clamp bpp to default limit on screens without EDID 1.4 */
12248 if (connector->base.display_info.bpc == 0) {
12249 int type = connector->base.connector_type;
12250 int clamp_bpp = 24;
12252 /* Fall back to 18 bpp when DP sink capability is unknown. */
12253 if (type == DRM_MODE_CONNECTOR_DisplayPort ||
12254 type == DRM_MODE_CONNECTOR_eDP)
12257 if (bpp > clamp_bpp) {
12258 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n",
12260 pipe_config->pipe_bpp = clamp_bpp;
12266 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
12267 struct intel_crtc_state *pipe_config)
12269 struct drm_device *dev = crtc->base.dev;
12270 struct drm_atomic_state *state;
12271 struct drm_connector *connector;
12272 struct drm_connector_state *connector_state;
12275 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)))
12277 else if (INTEL_INFO(dev)->gen >= 5)
12283 pipe_config->pipe_bpp = bpp;
12285 state = pipe_config->base.state;
12287 /* Clamp display bpp to EDID value */
12288 for_each_connector_in_state(state, connector, connector_state, i) {
12289 if (connector_state->crtc != &crtc->base)
12292 connected_sink_compute_bpp(to_intel_connector(connector),
12299 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
12301 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
12302 "type: 0x%x flags: 0x%x\n",
12304 mode->crtc_hdisplay, mode->crtc_hsync_start,
12305 mode->crtc_hsync_end, mode->crtc_htotal,
12306 mode->crtc_vdisplay, mode->crtc_vsync_start,
12307 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
12310 static void intel_dump_pipe_config(struct intel_crtc *crtc,
12311 struct intel_crtc_state *pipe_config,
12312 const char *context)
12314 struct drm_device *dev = crtc->base.dev;
12315 struct drm_plane *plane;
12316 struct intel_plane *intel_plane;
12317 struct intel_plane_state *state;
12318 struct drm_framebuffer *fb;
12320 DRM_DEBUG_KMS("[CRTC:%d:%s]%s config %p for pipe %c\n",
12321 crtc->base.base.id, crtc->base.name,
12322 context, pipe_config, pipe_name(crtc->pipe));
12324 DRM_DEBUG_KMS("cpu_transcoder: %s\n", transcoder_name(pipe_config->cpu_transcoder));
12325 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
12326 pipe_config->pipe_bpp, pipe_config->dither);
12327 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
12328 pipe_config->has_pch_encoder,
12329 pipe_config->fdi_lanes,
12330 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
12331 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
12332 pipe_config->fdi_m_n.tu);
12333 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
12334 pipe_config->has_dp_encoder,
12335 pipe_config->lane_count,
12336 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
12337 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
12338 pipe_config->dp_m_n.tu);
12340 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
12341 pipe_config->has_dp_encoder,
12342 pipe_config->lane_count,
12343 pipe_config->dp_m2_n2.gmch_m,
12344 pipe_config->dp_m2_n2.gmch_n,
12345 pipe_config->dp_m2_n2.link_m,
12346 pipe_config->dp_m2_n2.link_n,
12347 pipe_config->dp_m2_n2.tu);
12349 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
12350 pipe_config->has_audio,
12351 pipe_config->has_infoframe);
12353 DRM_DEBUG_KMS("requested mode:\n");
12354 drm_mode_debug_printmodeline(&pipe_config->base.mode);
12355 DRM_DEBUG_KMS("adjusted mode:\n");
12356 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
12357 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
12358 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
12359 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
12360 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
12361 DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
12363 pipe_config->scaler_state.scaler_users,
12364 pipe_config->scaler_state.scaler_id);
12365 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
12366 pipe_config->gmch_pfit.control,
12367 pipe_config->gmch_pfit.pgm_ratios,
12368 pipe_config->gmch_pfit.lvds_border_bits);
12369 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
12370 pipe_config->pch_pfit.pos,
12371 pipe_config->pch_pfit.size,
12372 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
12373 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
12374 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
12376 if (IS_BROXTON(dev)) {
12377 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
12378 "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
12379 "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
12380 pipe_config->ddi_pll_sel,
12381 pipe_config->dpll_hw_state.ebb0,
12382 pipe_config->dpll_hw_state.ebb4,
12383 pipe_config->dpll_hw_state.pll0,
12384 pipe_config->dpll_hw_state.pll1,
12385 pipe_config->dpll_hw_state.pll2,
12386 pipe_config->dpll_hw_state.pll3,
12387 pipe_config->dpll_hw_state.pll6,
12388 pipe_config->dpll_hw_state.pll8,
12389 pipe_config->dpll_hw_state.pll9,
12390 pipe_config->dpll_hw_state.pll10,
12391 pipe_config->dpll_hw_state.pcsdw12);
12392 } else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
12393 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: "
12394 "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
12395 pipe_config->ddi_pll_sel,
12396 pipe_config->dpll_hw_state.ctrl1,
12397 pipe_config->dpll_hw_state.cfgcr1,
12398 pipe_config->dpll_hw_state.cfgcr2);
12399 } else if (HAS_DDI(dev)) {
12400 DRM_DEBUG_KMS("ddi_pll_sel: 0x%x; dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
12401 pipe_config->ddi_pll_sel,
12402 pipe_config->dpll_hw_state.wrpll,
12403 pipe_config->dpll_hw_state.spll);
12405 DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
12406 "fp0: 0x%x, fp1: 0x%x\n",
12407 pipe_config->dpll_hw_state.dpll,
12408 pipe_config->dpll_hw_state.dpll_md,
12409 pipe_config->dpll_hw_state.fp0,
12410 pipe_config->dpll_hw_state.fp1);
12413 DRM_DEBUG_KMS("planes on this crtc\n");
12414 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
12415 intel_plane = to_intel_plane(plane);
12416 if (intel_plane->pipe != crtc->pipe)
12419 state = to_intel_plane_state(plane->state);
12420 fb = state->base.fb;
12422 DRM_DEBUG_KMS("[PLANE:%d:%s] disabled, scaler_id = %d\n",
12423 plane->base.id, plane->name, state->scaler_id);
12427 DRM_DEBUG_KMS("[PLANE:%d:%s] enabled",
12428 plane->base.id, plane->name);
12429 DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = %s",
12430 fb->base.id, fb->width, fb->height,
12431 drm_get_format_name(fb->pixel_format));
12432 DRM_DEBUG_KMS("\tscaler:%d src %dx%d+%d+%d dst %dx%d+%d+%d\n",
12434 state->src.x1 >> 16, state->src.y1 >> 16,
12435 drm_rect_width(&state->src) >> 16,
12436 drm_rect_height(&state->src) >> 16,
12437 state->dst.x1, state->dst.y1,
12438 drm_rect_width(&state->dst),
12439 drm_rect_height(&state->dst));
12443 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
12445 struct drm_device *dev = state->dev;
12446 struct drm_connector *connector;
12447 unsigned int used_ports = 0;
12450 * Walk the connector list instead of the encoder
12451 * list to detect the problem on ddi platforms
12452 * where there's just one encoder per digital port.
12454 drm_for_each_connector(connector, dev) {
12455 struct drm_connector_state *connector_state;
12456 struct intel_encoder *encoder;
12458 connector_state = drm_atomic_get_existing_connector_state(state, connector);
12459 if (!connector_state)
12460 connector_state = connector->state;
12462 if (!connector_state->best_encoder)
12465 encoder = to_intel_encoder(connector_state->best_encoder);
12467 WARN_ON(!connector_state->crtc);
12469 switch (encoder->type) {
12470 unsigned int port_mask;
12471 case INTEL_OUTPUT_UNKNOWN:
12472 if (WARN_ON(!HAS_DDI(dev)))
12474 case INTEL_OUTPUT_DISPLAYPORT:
12475 case INTEL_OUTPUT_HDMI:
12476 case INTEL_OUTPUT_EDP:
12477 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
12479 /* the same port mustn't appear more than once */
12480 if (used_ports & port_mask)
12483 used_ports |= port_mask;
12493 clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
12495 struct drm_crtc_state tmp_state;
12496 struct intel_crtc_scaler_state scaler_state;
12497 struct intel_dpll_hw_state dpll_hw_state;
12498 struct intel_shared_dpll *shared_dpll;
12499 uint32_t ddi_pll_sel;
12502 /* FIXME: before the switch to atomic started, a new pipe_config was
12503 * kzalloc'd. Code that depends on any field being zero should be
12504 * fixed, so that the crtc_state can be safely duplicated. For now,
12505 * only fields that are know to not cause problems are preserved. */
12507 tmp_state = crtc_state->base;
12508 scaler_state = crtc_state->scaler_state;
12509 shared_dpll = crtc_state->shared_dpll;
12510 dpll_hw_state = crtc_state->dpll_hw_state;
12511 ddi_pll_sel = crtc_state->ddi_pll_sel;
12512 force_thru = crtc_state->pch_pfit.force_thru;
12514 memset(crtc_state, 0, sizeof *crtc_state);
12516 crtc_state->base = tmp_state;
12517 crtc_state->scaler_state = scaler_state;
12518 crtc_state->shared_dpll = shared_dpll;
12519 crtc_state->dpll_hw_state = dpll_hw_state;
12520 crtc_state->ddi_pll_sel = ddi_pll_sel;
12521 crtc_state->pch_pfit.force_thru = force_thru;
12525 intel_modeset_pipe_config(struct drm_crtc *crtc,
12526 struct intel_crtc_state *pipe_config)
12528 struct drm_atomic_state *state = pipe_config->base.state;
12529 struct intel_encoder *encoder;
12530 struct drm_connector *connector;
12531 struct drm_connector_state *connector_state;
12532 int base_bpp, ret = -EINVAL;
12536 clear_intel_crtc_state(pipe_config);
12538 pipe_config->cpu_transcoder =
12539 (enum transcoder) to_intel_crtc(crtc)->pipe;
12542 * Sanitize sync polarity flags based on requested ones. If neither
12543 * positive or negative polarity is requested, treat this as meaning
12544 * negative polarity.
12546 if (!(pipe_config->base.adjusted_mode.flags &
12547 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
12548 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
12550 if (!(pipe_config->base.adjusted_mode.flags &
12551 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
12552 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
12554 base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
12560 * Determine the real pipe dimensions. Note that stereo modes can
12561 * increase the actual pipe size due to the frame doubling and
12562 * insertion of additional space for blanks between the frame. This
12563 * is stored in the crtc timings. We use the requested mode to do this
12564 * computation to clearly distinguish it from the adjusted mode, which
12565 * can be changed by the connectors in the below retry loop.
12567 drm_crtc_get_hv_timing(&pipe_config->base.mode,
12568 &pipe_config->pipe_src_w,
12569 &pipe_config->pipe_src_h);
12572 /* Ensure the port clock defaults are reset when retrying. */
12573 pipe_config->port_clock = 0;
12574 pipe_config->pixel_multiplier = 1;
12576 /* Fill in default crtc timings, allow encoders to overwrite them. */
12577 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
12578 CRTC_STEREO_DOUBLE);
12580 /* Pass our mode to the connectors and the CRTC to give them a chance to
12581 * adjust it according to limitations or connector properties, and also
12582 * a chance to reject the mode entirely.
12584 for_each_connector_in_state(state, connector, connector_state, i) {
12585 if (connector_state->crtc != crtc)
12588 encoder = to_intel_encoder(connector_state->best_encoder);
12590 if (!(encoder->compute_config(encoder, pipe_config))) {
12591 DRM_DEBUG_KMS("Encoder config failure\n");
12596 /* Set default port clock if not overwritten by the encoder. Needs to be
12597 * done afterwards in case the encoder adjusts the mode. */
12598 if (!pipe_config->port_clock)
12599 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
12600 * pipe_config->pixel_multiplier;
12602 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
12604 DRM_DEBUG_KMS("CRTC fixup failed\n");
12608 if (ret == RETRY) {
12609 if (WARN(!retry, "loop in pipe configuration computation\n")) {
12614 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
12616 goto encoder_retry;
12619 /* Dithering seems to not pass-through bits correctly when it should, so
12620 * only enable it on 6bpc panels. */
12621 pipe_config->dither = pipe_config->pipe_bpp == 6*3;
12622 DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
12623 base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
12630 intel_modeset_update_crtc_state(struct drm_atomic_state *state)
12632 struct drm_crtc *crtc;
12633 struct drm_crtc_state *crtc_state;
12636 /* Double check state. */
12637 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12638 to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
12640 /* Update hwmode for vblank functions */
12641 if (crtc->state->active)
12642 crtc->hwmode = crtc->state->adjusted_mode;
12644 crtc->hwmode.crtc_clock = 0;
12647 * Update legacy state to satisfy fbc code. This can
12648 * be removed when fbc uses the atomic state.
12650 if (drm_atomic_get_existing_plane_state(state, crtc->primary)) {
12651 struct drm_plane_state *plane_state = crtc->primary->state;
12653 crtc->primary->fb = plane_state->fb;
12654 crtc->x = plane_state->src_x >> 16;
12655 crtc->y = plane_state->src_y >> 16;
12660 static bool intel_fuzzy_clock_check(int clock1, int clock2)
12664 if (clock1 == clock2)
12667 if (!clock1 || !clock2)
12670 diff = abs(clock1 - clock2);
12672 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
12678 #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
12679 list_for_each_entry((intel_crtc), \
12680 &(dev)->mode_config.crtc_list, \
12682 for_each_if (mask & (1 <<(intel_crtc)->pipe))
12685 intel_compare_m_n(unsigned int m, unsigned int n,
12686 unsigned int m2, unsigned int n2,
12689 if (m == m2 && n == n2)
12692 if (exact || !m || !n || !m2 || !n2)
12695 BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
12702 } else if (n < n2) {
12712 return intel_fuzzy_clock_check(m, m2);
12716 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
12717 struct intel_link_m_n *m2_n2,
12720 if (m_n->tu == m2_n2->tu &&
12721 intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
12722 m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
12723 intel_compare_m_n(m_n->link_m, m_n->link_n,
12724 m2_n2->link_m, m2_n2->link_n, !adjust)) {
12735 intel_pipe_config_compare(struct drm_device *dev,
12736 struct intel_crtc_state *current_config,
12737 struct intel_crtc_state *pipe_config,
12742 #define INTEL_ERR_OR_DBG_KMS(fmt, ...) \
12745 DRM_ERROR(fmt, ##__VA_ARGS__); \
12747 DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \
12750 #define PIPE_CONF_CHECK_X(name) \
12751 if (current_config->name != pipe_config->name) { \
12752 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12753 "(expected 0x%08x, found 0x%08x)\n", \
12754 current_config->name, \
12755 pipe_config->name); \
12759 #define PIPE_CONF_CHECK_I(name) \
12760 if (current_config->name != pipe_config->name) { \
12761 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12762 "(expected %i, found %i)\n", \
12763 current_config->name, \
12764 pipe_config->name); \
12768 #define PIPE_CONF_CHECK_P(name) \
12769 if (current_config->name != pipe_config->name) { \
12770 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12771 "(expected %p, found %p)\n", \
12772 current_config->name, \
12773 pipe_config->name); \
12777 #define PIPE_CONF_CHECK_M_N(name) \
12778 if (!intel_compare_link_m_n(¤t_config->name, \
12779 &pipe_config->name,\
12781 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12782 "(expected tu %i gmch %i/%i link %i/%i, " \
12783 "found tu %i, gmch %i/%i link %i/%i)\n", \
12784 current_config->name.tu, \
12785 current_config->name.gmch_m, \
12786 current_config->name.gmch_n, \
12787 current_config->name.link_m, \
12788 current_config->name.link_n, \
12789 pipe_config->name.tu, \
12790 pipe_config->name.gmch_m, \
12791 pipe_config->name.gmch_n, \
12792 pipe_config->name.link_m, \
12793 pipe_config->name.link_n); \
12797 /* This is required for BDW+ where there is only one set of registers for
12798 * switching between high and low RR.
12799 * This macro can be used whenever a comparison has to be made between one
12800 * hw state and multiple sw state variables.
12802 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \
12803 if (!intel_compare_link_m_n(¤t_config->name, \
12804 &pipe_config->name, adjust) && \
12805 !intel_compare_link_m_n(¤t_config->alt_name, \
12806 &pipe_config->name, adjust)) { \
12807 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12808 "(expected tu %i gmch %i/%i link %i/%i, " \
12809 "or tu %i gmch %i/%i link %i/%i, " \
12810 "found tu %i, gmch %i/%i link %i/%i)\n", \
12811 current_config->name.tu, \
12812 current_config->name.gmch_m, \
12813 current_config->name.gmch_n, \
12814 current_config->name.link_m, \
12815 current_config->name.link_n, \
12816 current_config->alt_name.tu, \
12817 current_config->alt_name.gmch_m, \
12818 current_config->alt_name.gmch_n, \
12819 current_config->alt_name.link_m, \
12820 current_config->alt_name.link_n, \
12821 pipe_config->name.tu, \
12822 pipe_config->name.gmch_m, \
12823 pipe_config->name.gmch_n, \
12824 pipe_config->name.link_m, \
12825 pipe_config->name.link_n); \
12829 #define PIPE_CONF_CHECK_FLAGS(name, mask) \
12830 if ((current_config->name ^ pipe_config->name) & (mask)) { \
12831 INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \
12832 "(expected %i, found %i)\n", \
12833 current_config->name & (mask), \
12834 pipe_config->name & (mask)); \
12838 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
12839 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
12840 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12841 "(expected %i, found %i)\n", \
12842 current_config->name, \
12843 pipe_config->name); \
12847 #define PIPE_CONF_QUIRK(quirk) \
12848 ((current_config->quirks | pipe_config->quirks) & (quirk))
12850 PIPE_CONF_CHECK_I(cpu_transcoder);
12852 PIPE_CONF_CHECK_I(has_pch_encoder);
12853 PIPE_CONF_CHECK_I(fdi_lanes);
12854 PIPE_CONF_CHECK_M_N(fdi_m_n);
12856 PIPE_CONF_CHECK_I(has_dp_encoder);
12857 PIPE_CONF_CHECK_I(lane_count);
12858 PIPE_CONF_CHECK_X(lane_lat_optim_mask);
12860 if (INTEL_INFO(dev)->gen < 8) {
12861 PIPE_CONF_CHECK_M_N(dp_m_n);
12863 if (current_config->has_drrs)
12864 PIPE_CONF_CHECK_M_N(dp_m2_n2);
12866 PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
12868 PIPE_CONF_CHECK_I(has_dsi_encoder);
12870 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
12871 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
12872 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
12873 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
12874 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
12875 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
12877 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
12878 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
12879 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
12880 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
12881 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
12882 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
12884 PIPE_CONF_CHECK_I(pixel_multiplier);
12885 PIPE_CONF_CHECK_I(has_hdmi_sink);
12886 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
12887 IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
12888 PIPE_CONF_CHECK_I(limited_color_range);
12889 PIPE_CONF_CHECK_I(has_infoframe);
12891 PIPE_CONF_CHECK_I(has_audio);
12893 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12894 DRM_MODE_FLAG_INTERLACE);
12896 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
12897 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12898 DRM_MODE_FLAG_PHSYNC);
12899 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12900 DRM_MODE_FLAG_NHSYNC);
12901 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12902 DRM_MODE_FLAG_PVSYNC);
12903 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12904 DRM_MODE_FLAG_NVSYNC);
12907 PIPE_CONF_CHECK_X(gmch_pfit.control);
12908 /* pfit ratios are autocomputed by the hw on gen4+ */
12909 if (INTEL_INFO(dev)->gen < 4)
12910 PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios);
12911 PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
12914 PIPE_CONF_CHECK_I(pipe_src_w);
12915 PIPE_CONF_CHECK_I(pipe_src_h);
12917 PIPE_CONF_CHECK_I(pch_pfit.enabled);
12918 if (current_config->pch_pfit.enabled) {
12919 PIPE_CONF_CHECK_X(pch_pfit.pos);
12920 PIPE_CONF_CHECK_X(pch_pfit.size);
12923 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
12926 /* BDW+ don't expose a synchronous way to read the state */
12927 if (IS_HASWELL(dev))
12928 PIPE_CONF_CHECK_I(ips_enabled);
12930 PIPE_CONF_CHECK_I(double_wide);
12932 PIPE_CONF_CHECK_X(ddi_pll_sel);
12934 PIPE_CONF_CHECK_P(shared_dpll);
12935 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
12936 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
12937 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
12938 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
12939 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
12940 PIPE_CONF_CHECK_X(dpll_hw_state.spll);
12941 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
12942 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
12943 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
12945 PIPE_CONF_CHECK_X(dsi_pll.ctrl);
12946 PIPE_CONF_CHECK_X(dsi_pll.div);
12948 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
12949 PIPE_CONF_CHECK_I(pipe_bpp);
12951 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
12952 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
12954 #undef PIPE_CONF_CHECK_X
12955 #undef PIPE_CONF_CHECK_I
12956 #undef PIPE_CONF_CHECK_P
12957 #undef PIPE_CONF_CHECK_FLAGS
12958 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
12959 #undef PIPE_CONF_QUIRK
12960 #undef INTEL_ERR_OR_DBG_KMS
12965 static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
12966 const struct intel_crtc_state *pipe_config)
12968 if (pipe_config->has_pch_encoder) {
12969 int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
12970 &pipe_config->fdi_m_n);
12971 int dotclock = pipe_config->base.adjusted_mode.crtc_clock;
12974 * FDI already provided one idea for the dotclock.
12975 * Yell if the encoder disagrees.
12977 WARN(!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
12978 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
12979 fdi_dotclock, dotclock);
12983 static void verify_wm_state(struct drm_crtc *crtc,
12984 struct drm_crtc_state *new_state)
12986 struct drm_device *dev = crtc->dev;
12987 struct drm_i915_private *dev_priv = dev->dev_private;
12988 struct skl_ddb_allocation hw_ddb, *sw_ddb;
12989 struct skl_ddb_entry *hw_entry, *sw_entry;
12990 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12991 const enum pipe pipe = intel_crtc->pipe;
12994 if (INTEL_INFO(dev)->gen < 9 || !new_state->active)
12997 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
12998 sw_ddb = &dev_priv->wm.skl_hw.ddb;
13001 for_each_plane(dev_priv, pipe, plane) {
13002 hw_entry = &hw_ddb.plane[pipe][plane];
13003 sw_entry = &sw_ddb->plane[pipe][plane];
13005 if (skl_ddb_entry_equal(hw_entry, sw_entry))
13008 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
13009 "(expected (%u,%u), found (%u,%u))\n",
13010 pipe_name(pipe), plane + 1,
13011 sw_entry->start, sw_entry->end,
13012 hw_entry->start, hw_entry->end);
13016 hw_entry = &hw_ddb.plane[pipe][PLANE_CURSOR];
13017 sw_entry = &sw_ddb->plane[pipe][PLANE_CURSOR];
13019 if (!skl_ddb_entry_equal(hw_entry, sw_entry)) {
13020 DRM_ERROR("mismatch in DDB state pipe %c cursor "
13021 "(expected (%u,%u), found (%u,%u))\n",
13023 sw_entry->start, sw_entry->end,
13024 hw_entry->start, hw_entry->end);
13029 verify_connector_state(struct drm_device *dev, struct drm_crtc *crtc)
13031 struct drm_connector *connector;
13033 drm_for_each_connector(connector, dev) {
13034 struct drm_encoder *encoder = connector->encoder;
13035 struct drm_connector_state *state = connector->state;
13037 if (state->crtc != crtc)
13040 intel_connector_verify_state(to_intel_connector(connector));
13042 I915_STATE_WARN(state->best_encoder != encoder,
13043 "connector's atomic encoder doesn't match legacy encoder\n");
13048 verify_encoder_state(struct drm_device *dev)
13050 struct intel_encoder *encoder;
13051 struct intel_connector *connector;
13053 for_each_intel_encoder(dev, encoder) {
13054 bool enabled = false;
13057 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
13058 encoder->base.base.id,
13059 encoder->base.name);
13061 for_each_intel_connector(dev, connector) {
13062 if (connector->base.state->best_encoder != &encoder->base)
13066 I915_STATE_WARN(connector->base.state->crtc !=
13067 encoder->base.crtc,
13068 "connector's crtc doesn't match encoder crtc\n");
13071 I915_STATE_WARN(!!encoder->base.crtc != enabled,
13072 "encoder's enabled state mismatch "
13073 "(expected %i, found %i)\n",
13074 !!encoder->base.crtc, enabled);
13076 if (!encoder->base.crtc) {
13079 active = encoder->get_hw_state(encoder, &pipe);
13080 I915_STATE_WARN(active,
13081 "encoder detached but still enabled on pipe %c.\n",
13088 verify_crtc_state(struct drm_crtc *crtc,
13089 struct drm_crtc_state *old_crtc_state,
13090 struct drm_crtc_state *new_crtc_state)
13092 struct drm_device *dev = crtc->dev;
13093 struct drm_i915_private *dev_priv = dev->dev_private;
13094 struct intel_encoder *encoder;
13095 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13096 struct intel_crtc_state *pipe_config, *sw_config;
13097 struct drm_atomic_state *old_state;
13100 old_state = old_crtc_state->state;
13101 __drm_atomic_helper_crtc_destroy_state(old_crtc_state);
13102 pipe_config = to_intel_crtc_state(old_crtc_state);
13103 memset(pipe_config, 0, sizeof(*pipe_config));
13104 pipe_config->base.crtc = crtc;
13105 pipe_config->base.state = old_state;
13107 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
13109 active = dev_priv->display.get_pipe_config(intel_crtc, pipe_config);
13111 /* hw state is inconsistent with the pipe quirk */
13112 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
13113 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
13114 active = new_crtc_state->active;
13116 I915_STATE_WARN(new_crtc_state->active != active,
13117 "crtc active state doesn't match with hw state "
13118 "(expected %i, found %i)\n", new_crtc_state->active, active);
13120 I915_STATE_WARN(intel_crtc->active != new_crtc_state->active,
13121 "transitional active state does not match atomic hw state "
13122 "(expected %i, found %i)\n", new_crtc_state->active, intel_crtc->active);
13124 for_each_encoder_on_crtc(dev, crtc, encoder) {
13127 active = encoder->get_hw_state(encoder, &pipe);
13128 I915_STATE_WARN(active != new_crtc_state->active,
13129 "[ENCODER:%i] active %i with crtc active %i\n",
13130 encoder->base.base.id, active, new_crtc_state->active);
13132 I915_STATE_WARN(active && intel_crtc->pipe != pipe,
13133 "Encoder connected to wrong pipe %c\n",
13137 encoder->get_config(encoder, pipe_config);
13140 if (!new_crtc_state->active)
13143 intel_pipe_config_sanity_check(dev_priv, pipe_config);
13145 sw_config = to_intel_crtc_state(crtc->state);
13146 if (!intel_pipe_config_compare(dev, sw_config,
13147 pipe_config, false)) {
13148 I915_STATE_WARN(1, "pipe state doesn't match!\n");
13149 intel_dump_pipe_config(intel_crtc, pipe_config,
13151 intel_dump_pipe_config(intel_crtc, sw_config,
13157 verify_single_dpll_state(struct drm_i915_private *dev_priv,
13158 struct intel_shared_dpll *pll,
13159 struct drm_crtc *crtc,
13160 struct drm_crtc_state *new_state)
13162 struct intel_dpll_hw_state dpll_hw_state;
13163 unsigned crtc_mask;
13166 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
13168 DRM_DEBUG_KMS("%s\n", pll->name);
13170 active = pll->funcs.get_hw_state(dev_priv, pll, &dpll_hw_state);
13172 if (!(pll->flags & INTEL_DPLL_ALWAYS_ON)) {
13173 I915_STATE_WARN(!pll->on && pll->active_mask,
13174 "pll in active use but not on in sw tracking\n");
13175 I915_STATE_WARN(pll->on && !pll->active_mask,
13176 "pll is on but not used by any active crtc\n");
13177 I915_STATE_WARN(pll->on != active,
13178 "pll on state mismatch (expected %i, found %i)\n",
13183 I915_STATE_WARN(pll->active_mask & ~pll->config.crtc_mask,
13184 "more active pll users than references: %x vs %x\n",
13185 pll->active_mask, pll->config.crtc_mask);
13190 crtc_mask = 1 << drm_crtc_index(crtc);
13192 if (new_state->active)
13193 I915_STATE_WARN(!(pll->active_mask & crtc_mask),
13194 "pll active mismatch (expected pipe %c in active mask 0x%02x)\n",
13195 pipe_name(drm_crtc_index(crtc)), pll->active_mask);
13197 I915_STATE_WARN(pll->active_mask & crtc_mask,
13198 "pll active mismatch (didn't expect pipe %c in active mask 0x%02x)\n",
13199 pipe_name(drm_crtc_index(crtc)), pll->active_mask);
13201 I915_STATE_WARN(!(pll->config.crtc_mask & crtc_mask),
13202 "pll enabled crtcs mismatch (expected 0x%x in 0x%02x)\n",
13203 crtc_mask, pll->config.crtc_mask);
13205 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state,
13207 sizeof(dpll_hw_state)),
13208 "pll hw state mismatch\n");
13212 verify_shared_dpll_state(struct drm_device *dev, struct drm_crtc *crtc,
13213 struct drm_crtc_state *old_crtc_state,
13214 struct drm_crtc_state *new_crtc_state)
13216 struct drm_i915_private *dev_priv = dev->dev_private;
13217 struct intel_crtc_state *old_state = to_intel_crtc_state(old_crtc_state);
13218 struct intel_crtc_state *new_state = to_intel_crtc_state(new_crtc_state);
13220 if (new_state->shared_dpll)
13221 verify_single_dpll_state(dev_priv, new_state->shared_dpll, crtc, new_crtc_state);
13223 if (old_state->shared_dpll &&
13224 old_state->shared_dpll != new_state->shared_dpll) {
13225 unsigned crtc_mask = 1 << drm_crtc_index(crtc);
13226 struct intel_shared_dpll *pll = old_state->shared_dpll;
13228 I915_STATE_WARN(pll->active_mask & crtc_mask,
13229 "pll active mismatch (didn't expect pipe %c in active mask)\n",
13230 pipe_name(drm_crtc_index(crtc)));
13231 I915_STATE_WARN(pll->config.crtc_mask & crtc_mask,
13232 "pll enabled crtcs mismatch (found %x in enabled mask)\n",
13233 pipe_name(drm_crtc_index(crtc)));
13238 intel_modeset_verify_crtc(struct drm_crtc *crtc,
13239 struct drm_crtc_state *old_state,
13240 struct drm_crtc_state *new_state)
13242 if (!needs_modeset(new_state) &&
13243 !to_intel_crtc_state(new_state)->update_pipe)
13246 verify_wm_state(crtc, new_state);
13247 verify_connector_state(crtc->dev, crtc);
13248 verify_crtc_state(crtc, old_state, new_state);
13249 verify_shared_dpll_state(crtc->dev, crtc, old_state, new_state);
13253 verify_disabled_dpll_state(struct drm_device *dev)
13255 struct drm_i915_private *dev_priv = dev->dev_private;
13258 for (i = 0; i < dev_priv->num_shared_dpll; i++)
13259 verify_single_dpll_state(dev_priv, &dev_priv->shared_dplls[i], NULL, NULL);
13263 intel_modeset_verify_disabled(struct drm_device *dev)
13265 verify_encoder_state(dev);
13266 verify_connector_state(dev, NULL);
13267 verify_disabled_dpll_state(dev);
13270 static void update_scanline_offset(struct intel_crtc *crtc)
13272 struct drm_device *dev = crtc->base.dev;
13275 * The scanline counter increments at the leading edge of hsync.
13277 * On most platforms it starts counting from vtotal-1 on the
13278 * first active line. That means the scanline counter value is
13279 * always one less than what we would expect. Ie. just after
13280 * start of vblank, which also occurs at start of hsync (on the
13281 * last active line), the scanline counter will read vblank_start-1.
13283 * On gen2 the scanline counter starts counting from 1 instead
13284 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
13285 * to keep the value positive), instead of adding one.
13287 * On HSW+ the behaviour of the scanline counter depends on the output
13288 * type. For DP ports it behaves like most other platforms, but on HDMI
13289 * there's an extra 1 line difference. So we need to add two instead of
13290 * one to the value.
13292 if (IS_GEN2(dev)) {
13293 const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
13296 vtotal = adjusted_mode->crtc_vtotal;
13297 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
13300 crtc->scanline_offset = vtotal - 1;
13301 } else if (HAS_DDI(dev) &&
13302 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
13303 crtc->scanline_offset = 2;
13305 crtc->scanline_offset = 1;
13308 static void intel_modeset_clear_plls(struct drm_atomic_state *state)
13310 struct drm_device *dev = state->dev;
13311 struct drm_i915_private *dev_priv = to_i915(dev);
13312 struct intel_shared_dpll_config *shared_dpll = NULL;
13313 struct drm_crtc *crtc;
13314 struct drm_crtc_state *crtc_state;
13317 if (!dev_priv->display.crtc_compute_clock)
13320 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13321 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13322 struct intel_shared_dpll *old_dpll =
13323 to_intel_crtc_state(crtc->state)->shared_dpll;
13325 if (!needs_modeset(crtc_state))
13328 to_intel_crtc_state(crtc_state)->shared_dpll = NULL;
13334 shared_dpll = intel_atomic_get_shared_dpll_state(state);
13336 intel_shared_dpll_config_put(shared_dpll, old_dpll, intel_crtc);
13341 * This implements the workaround described in the "notes" section of the mode
13342 * set sequence documentation. When going from no pipes or single pipe to
13343 * multiple pipes, and planes are enabled after the pipe, we need to wait at
13344 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
13346 static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
13348 struct drm_crtc_state *crtc_state;
13349 struct intel_crtc *intel_crtc;
13350 struct drm_crtc *crtc;
13351 struct intel_crtc_state *first_crtc_state = NULL;
13352 struct intel_crtc_state *other_crtc_state = NULL;
13353 enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
13356 /* look at all crtc's that are going to be enabled in during modeset */
13357 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13358 intel_crtc = to_intel_crtc(crtc);
13360 if (!crtc_state->active || !needs_modeset(crtc_state))
13363 if (first_crtc_state) {
13364 other_crtc_state = to_intel_crtc_state(crtc_state);
13367 first_crtc_state = to_intel_crtc_state(crtc_state);
13368 first_pipe = intel_crtc->pipe;
13372 /* No workaround needed? */
13373 if (!first_crtc_state)
13376 /* w/a possibly needed, check how many crtc's are already enabled. */
13377 for_each_intel_crtc(state->dev, intel_crtc) {
13378 struct intel_crtc_state *pipe_config;
13380 pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
13381 if (IS_ERR(pipe_config))
13382 return PTR_ERR(pipe_config);
13384 pipe_config->hsw_workaround_pipe = INVALID_PIPE;
13386 if (!pipe_config->base.active ||
13387 needs_modeset(&pipe_config->base))
13390 /* 2 or more enabled crtcs means no need for w/a */
13391 if (enabled_pipe != INVALID_PIPE)
13394 enabled_pipe = intel_crtc->pipe;
13397 if (enabled_pipe != INVALID_PIPE)
13398 first_crtc_state->hsw_workaround_pipe = enabled_pipe;
13399 else if (other_crtc_state)
13400 other_crtc_state->hsw_workaround_pipe = first_pipe;
13405 static int intel_modeset_all_pipes(struct drm_atomic_state *state)
13407 struct drm_crtc *crtc;
13408 struct drm_crtc_state *crtc_state;
13411 /* add all active pipes to the state */
13412 for_each_crtc(state->dev, crtc) {
13413 crtc_state = drm_atomic_get_crtc_state(state, crtc);
13414 if (IS_ERR(crtc_state))
13415 return PTR_ERR(crtc_state);
13417 if (!crtc_state->active || needs_modeset(crtc_state))
13420 crtc_state->mode_changed = true;
13422 ret = drm_atomic_add_affected_connectors(state, crtc);
13426 ret = drm_atomic_add_affected_planes(state, crtc);
13434 static int intel_modeset_checks(struct drm_atomic_state *state)
13436 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13437 struct drm_i915_private *dev_priv = state->dev->dev_private;
13438 struct drm_crtc *crtc;
13439 struct drm_crtc_state *crtc_state;
13442 if (!check_digital_port_conflicts(state)) {
13443 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
13447 intel_state->modeset = true;
13448 intel_state->active_crtcs = dev_priv->active_crtcs;
13450 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13451 if (crtc_state->active)
13452 intel_state->active_crtcs |= 1 << i;
13454 intel_state->active_crtcs &= ~(1 << i);
13456 if (crtc_state->active != crtc->state->active)
13457 intel_state->active_pipe_changes |= drm_crtc_mask(crtc);
13461 * See if the config requires any additional preparation, e.g.
13462 * to adjust global state with pipes off. We need to do this
13463 * here so we can get the modeset_pipe updated config for the new
13464 * mode set on this crtc. For other crtcs we need to use the
13465 * adjusted_mode bits in the crtc directly.
13467 if (dev_priv->display.modeset_calc_cdclk) {
13468 if (!intel_state->cdclk_pll_vco)
13469 intel_state->cdclk_pll_vco = dev_priv->cdclk_pll.vco;
13470 if (!intel_state->cdclk_pll_vco)
13471 intel_state->cdclk_pll_vco = dev_priv->skl_preferred_vco_freq;
13473 ret = dev_priv->display.modeset_calc_cdclk(state);
13477 if (intel_state->dev_cdclk != dev_priv->cdclk_freq ||
13478 intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco)
13479 ret = intel_modeset_all_pipes(state);
13484 DRM_DEBUG_KMS("New cdclk calculated to be atomic %u, actual %u\n",
13485 intel_state->cdclk, intel_state->dev_cdclk);
13487 to_intel_atomic_state(state)->cdclk = dev_priv->atomic_cdclk_freq;
13489 intel_modeset_clear_plls(state);
13491 if (IS_HASWELL(dev_priv))
13492 return haswell_mode_set_planes_workaround(state);
13498 * Handle calculation of various watermark data at the end of the atomic check
13499 * phase. The code here should be run after the per-crtc and per-plane 'check'
13500 * handlers to ensure that all derived state has been updated.
13502 static int calc_watermark_data(struct drm_atomic_state *state)
13504 struct drm_device *dev = state->dev;
13505 struct drm_i915_private *dev_priv = to_i915(dev);
13507 /* Is there platform-specific watermark information to calculate? */
13508 if (dev_priv->display.compute_global_watermarks)
13509 return dev_priv->display.compute_global_watermarks(state);
13515 * intel_atomic_check - validate state object
13517 * @state: state to validate
13519 static int intel_atomic_check(struct drm_device *dev,
13520 struct drm_atomic_state *state)
13522 struct drm_i915_private *dev_priv = to_i915(dev);
13523 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13524 struct drm_crtc *crtc;
13525 struct drm_crtc_state *crtc_state;
13527 bool any_ms = false;
13529 ret = drm_atomic_helper_check_modeset(dev, state);
13533 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13534 struct intel_crtc_state *pipe_config =
13535 to_intel_crtc_state(crtc_state);
13537 /* Catch I915_MODE_FLAG_INHERITED */
13538 if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
13539 crtc_state->mode_changed = true;
13541 if (!needs_modeset(crtc_state))
13544 if (!crtc_state->enable) {
13549 /* FIXME: For only active_changed we shouldn't need to do any
13550 * state recomputation at all. */
13552 ret = drm_atomic_add_affected_connectors(state, crtc);
13556 ret = intel_modeset_pipe_config(crtc, pipe_config);
13558 intel_dump_pipe_config(to_intel_crtc(crtc),
13559 pipe_config, "[failed]");
13563 if (i915.fastboot &&
13564 intel_pipe_config_compare(dev,
13565 to_intel_crtc_state(crtc->state),
13566 pipe_config, true)) {
13567 crtc_state->mode_changed = false;
13568 to_intel_crtc_state(crtc_state)->update_pipe = true;
13571 if (needs_modeset(crtc_state))
13574 ret = drm_atomic_add_affected_planes(state, crtc);
13578 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
13579 needs_modeset(crtc_state) ?
13580 "[modeset]" : "[fastset]");
13584 ret = intel_modeset_checks(state);
13589 intel_state->cdclk = dev_priv->cdclk_freq;
13591 ret = drm_atomic_helper_check_planes(dev, state);
13595 intel_fbc_choose_crtc(dev_priv, state);
13596 return calc_watermark_data(state);
13599 static int intel_atomic_prepare_commit(struct drm_device *dev,
13600 struct drm_atomic_state *state,
13603 struct drm_i915_private *dev_priv = dev->dev_private;
13604 struct drm_plane_state *plane_state;
13605 struct drm_crtc_state *crtc_state;
13606 struct drm_plane *plane;
13607 struct drm_crtc *crtc;
13610 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13611 if (state->legacy_cursor_update)
13614 ret = intel_crtc_wait_for_pending_flips(crtc);
13618 if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2)
13619 flush_workqueue(dev_priv->wq);
13622 ret = mutex_lock_interruptible(&dev->struct_mutex);
13626 ret = drm_atomic_helper_prepare_planes(dev, state);
13627 mutex_unlock(&dev->struct_mutex);
13629 if (!ret && !nonblock) {
13630 for_each_plane_in_state(state, plane, plane_state, i) {
13631 struct intel_plane_state *intel_plane_state =
13632 to_intel_plane_state(plane_state);
13634 if (!intel_plane_state->wait_req)
13637 ret = __i915_wait_request(intel_plane_state->wait_req,
13640 /* Any hang should be swallowed by the wait */
13641 WARN_ON(ret == -EIO);
13642 mutex_lock(&dev->struct_mutex);
13643 drm_atomic_helper_cleanup_planes(dev, state);
13644 mutex_unlock(&dev->struct_mutex);
13653 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
13655 struct drm_device *dev = crtc->base.dev;
13657 if (!dev->max_vblank_count)
13658 return drm_accurate_vblank_count(&crtc->base);
13660 return dev->driver->get_vblank_counter(dev, crtc->pipe);
13663 static void intel_atomic_wait_for_vblanks(struct drm_device *dev,
13664 struct drm_i915_private *dev_priv,
13665 unsigned crtc_mask)
13667 unsigned last_vblank_count[I915_MAX_PIPES];
13674 for_each_pipe(dev_priv, pipe) {
13675 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
13677 if (!((1 << pipe) & crtc_mask))
13680 ret = drm_crtc_vblank_get(crtc);
13681 if (WARN_ON(ret != 0)) {
13682 crtc_mask &= ~(1 << pipe);
13686 last_vblank_count[pipe] = drm_crtc_vblank_count(crtc);
13689 for_each_pipe(dev_priv, pipe) {
13690 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
13693 if (!((1 << pipe) & crtc_mask))
13696 lret = wait_event_timeout(dev->vblank[pipe].queue,
13697 last_vblank_count[pipe] !=
13698 drm_crtc_vblank_count(crtc),
13699 msecs_to_jiffies(50));
13701 WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe));
13703 drm_crtc_vblank_put(crtc);
13707 static bool needs_vblank_wait(struct intel_crtc_state *crtc_state)
13709 /* fb updated, need to unpin old fb */
13710 if (crtc_state->fb_changed)
13713 /* wm changes, need vblank before final wm's */
13714 if (crtc_state->update_wm_post)
13718 * cxsr is re-enabled after vblank.
13719 * This is already handled by crtc_state->update_wm_post,
13720 * but added for clarity.
13722 if (crtc_state->disable_cxsr)
13728 static void intel_atomic_commit_tail(struct drm_atomic_state *state)
13730 struct drm_device *dev = state->dev;
13731 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13732 struct drm_i915_private *dev_priv = dev->dev_private;
13733 struct drm_crtc_state *old_crtc_state;
13734 struct drm_crtc *crtc;
13735 struct intel_crtc_state *intel_cstate;
13736 struct drm_plane *plane;
13737 struct drm_plane_state *plane_state;
13738 bool hw_check = intel_state->modeset;
13739 unsigned long put_domains[I915_MAX_PIPES] = {};
13740 unsigned crtc_vblank_mask = 0;
13743 for_each_plane_in_state(state, plane, plane_state, i) {
13744 struct intel_plane_state *intel_plane_state =
13745 to_intel_plane_state(plane_state);
13747 if (!intel_plane_state->wait_req)
13750 ret = __i915_wait_request(intel_plane_state->wait_req,
13752 /* EIO should be eaten, and we can't get interrupted in the
13753 * worker, and blocking commits have waited already. */
13757 drm_atomic_helper_wait_for_dependencies(state);
13759 if (intel_state->modeset) {
13760 memcpy(dev_priv->min_pixclk, intel_state->min_pixclk,
13761 sizeof(intel_state->min_pixclk));
13762 dev_priv->active_crtcs = intel_state->active_crtcs;
13763 dev_priv->atomic_cdclk_freq = intel_state->cdclk;
13765 intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
13768 for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
13769 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13771 if (needs_modeset(crtc->state) ||
13772 to_intel_crtc_state(crtc->state)->update_pipe) {
13775 put_domains[to_intel_crtc(crtc)->pipe] =
13776 modeset_get_crtc_power_domains(crtc,
13777 to_intel_crtc_state(crtc->state));
13780 if (!needs_modeset(crtc->state))
13783 intel_pre_plane_update(to_intel_crtc_state(old_crtc_state));
13785 if (old_crtc_state->active) {
13786 intel_crtc_disable_planes(crtc, old_crtc_state->plane_mask);
13787 dev_priv->display.crtc_disable(crtc);
13788 intel_crtc->active = false;
13789 intel_fbc_disable(intel_crtc);
13790 intel_disable_shared_dpll(intel_crtc);
13793 * Underruns don't always raise
13794 * interrupts, so check manually.
13796 intel_check_cpu_fifo_underruns(dev_priv);
13797 intel_check_pch_fifo_underruns(dev_priv);
13799 if (!crtc->state->active)
13800 intel_update_watermarks(crtc);
13804 /* Only after disabling all output pipelines that will be changed can we
13805 * update the the output configuration. */
13806 intel_modeset_update_crtc_state(state);
13808 if (intel_state->modeset) {
13809 drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
13811 if (dev_priv->display.modeset_commit_cdclk &&
13812 (intel_state->dev_cdclk != dev_priv->cdclk_freq ||
13813 intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco))
13814 dev_priv->display.modeset_commit_cdclk(state);
13816 intel_modeset_verify_disabled(dev);
13819 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
13820 for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
13821 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13822 bool modeset = needs_modeset(crtc->state);
13823 struct intel_crtc_state *pipe_config =
13824 to_intel_crtc_state(crtc->state);
13826 if (modeset && crtc->state->active) {
13827 update_scanline_offset(to_intel_crtc(crtc));
13828 dev_priv->display.crtc_enable(crtc);
13831 /* Complete events for now disable pipes here. */
13832 if (modeset && !crtc->state->active && crtc->state->event) {
13833 spin_lock_irq(&dev->event_lock);
13834 drm_crtc_send_vblank_event(crtc, crtc->state->event);
13835 spin_unlock_irq(&dev->event_lock);
13837 crtc->state->event = NULL;
13841 intel_pre_plane_update(to_intel_crtc_state(old_crtc_state));
13843 if (crtc->state->active &&
13844 drm_atomic_get_existing_plane_state(state, crtc->primary))
13845 intel_fbc_enable(intel_crtc, pipe_config, to_intel_plane_state(crtc->primary->state));
13847 if (crtc->state->active)
13848 drm_atomic_helper_commit_planes_on_crtc(old_crtc_state);
13850 if (pipe_config->base.active && needs_vblank_wait(pipe_config))
13851 crtc_vblank_mask |= 1 << i;
13854 /* FIXME: We should call drm_atomic_helper_commit_hw_done() here
13855 * already, but still need the state for the delayed optimization. To
13857 * - wrap the optimization/post_plane_update stuff into a per-crtc work.
13858 * - schedule that vblank worker _before_ calling hw_done
13859 * - at the start of commit_tail, cancel it _synchrously
13860 * - switch over to the vblank wait helper in the core after that since
13861 * we don't need out special handling any more.
13863 if (!state->legacy_cursor_update)
13864 intel_atomic_wait_for_vblanks(dev, dev_priv, crtc_vblank_mask);
13867 * Now that the vblank has passed, we can go ahead and program the
13868 * optimal watermarks on platforms that need two-step watermark
13871 * TODO: Move this (and other cleanup) to an async worker eventually.
13873 for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
13874 intel_cstate = to_intel_crtc_state(crtc->state);
13876 if (dev_priv->display.optimize_watermarks)
13877 dev_priv->display.optimize_watermarks(intel_cstate);
13880 for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
13881 intel_post_plane_update(to_intel_crtc_state(old_crtc_state));
13883 if (put_domains[i])
13884 modeset_put_power_domains(dev_priv, put_domains[i]);
13886 intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state);
13889 drm_atomic_helper_commit_hw_done(state);
13891 if (intel_state->modeset)
13892 intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET);
13894 mutex_lock(&dev->struct_mutex);
13895 drm_atomic_helper_cleanup_planes(dev, state);
13896 mutex_unlock(&dev->struct_mutex);
13898 drm_atomic_helper_commit_cleanup_done(state);
13900 drm_atomic_state_free(state);
13902 /* As one of the primary mmio accessors, KMS has a high likelihood
13903 * of triggering bugs in unclaimed access. After we finish
13904 * modesetting, see if an error has been flagged, and if so
13905 * enable debugging for the next modeset - and hope we catch
13908 * XXX note that we assume display power is on at this point.
13909 * This might hold true now but we need to add pm helper to check
13910 * unclaimed only when the hardware is on, as atomic commits
13911 * can happen also when the device is completely off.
13913 intel_uncore_arm_unclaimed_mmio_detection(dev_priv);
13916 static void intel_atomic_commit_work(struct work_struct *work)
13918 struct drm_atomic_state *state = container_of(work,
13919 struct drm_atomic_state,
13921 intel_atomic_commit_tail(state);
13924 static void intel_atomic_track_fbs(struct drm_atomic_state *state)
13926 struct drm_plane_state *old_plane_state;
13927 struct drm_plane *plane;
13928 struct drm_i915_gem_object *obj, *old_obj;
13929 struct intel_plane *intel_plane;
13932 mutex_lock(&state->dev->struct_mutex);
13933 for_each_plane_in_state(state, plane, old_plane_state, i) {
13934 obj = intel_fb_obj(plane->state->fb);
13935 old_obj = intel_fb_obj(old_plane_state->fb);
13936 intel_plane = to_intel_plane(plane);
13938 i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
13940 mutex_unlock(&state->dev->struct_mutex);
13944 * intel_atomic_commit - commit validated state object
13946 * @state: the top-level driver state object
13947 * @nonblock: nonblocking commit
13949 * This function commits a top-level state object that has been validated
13950 * with drm_atomic_helper_check().
13952 * FIXME: Atomic modeset support for i915 is not yet complete. At the moment
13953 * nonblocking commits are only safe for pure plane updates. Everything else
13954 * should work though.
13957 * Zero for success or -errno.
13959 static int intel_atomic_commit(struct drm_device *dev,
13960 struct drm_atomic_state *state,
13963 struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13964 struct drm_i915_private *dev_priv = dev->dev_private;
13967 if (intel_state->modeset && nonblock) {
13968 DRM_DEBUG_KMS("nonblocking commit for modeset not yet implemented.\n");
13972 ret = drm_atomic_helper_setup_commit(state, nonblock);
13976 INIT_WORK(&state->commit_work, intel_atomic_commit_work);
13978 ret = intel_atomic_prepare_commit(dev, state, nonblock);
13980 DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret);
13984 drm_atomic_helper_swap_state(state, true);
13985 dev_priv->wm.distrust_bios_wm = false;
13986 dev_priv->wm.skl_results = intel_state->wm_results;
13987 intel_shared_dpll_commit(state);
13988 intel_atomic_track_fbs(state);
13991 queue_work(system_unbound_wq, &state->commit_work);
13993 intel_atomic_commit_tail(state);
13998 void intel_crtc_restore_mode(struct drm_crtc *crtc)
14000 struct drm_device *dev = crtc->dev;
14001 struct drm_atomic_state *state;
14002 struct drm_crtc_state *crtc_state;
14005 state = drm_atomic_state_alloc(dev);
14007 DRM_DEBUG_KMS("[CRTC:%d:%s] crtc restore failed, out of memory",
14008 crtc->base.id, crtc->name);
14012 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
14015 crtc_state = drm_atomic_get_crtc_state(state, crtc);
14016 ret = PTR_ERR_OR_ZERO(crtc_state);
14018 if (!crtc_state->active)
14021 crtc_state->mode_changed = true;
14022 ret = drm_atomic_commit(state);
14025 if (ret == -EDEADLK) {
14026 drm_atomic_state_clear(state);
14027 drm_modeset_backoff(state->acquire_ctx);
14033 drm_atomic_state_free(state);
14036 #undef for_each_intel_crtc_masked
14038 static const struct drm_crtc_funcs intel_crtc_funcs = {
14039 .gamma_set = drm_atomic_helper_legacy_gamma_set,
14040 .set_config = drm_atomic_helper_set_config,
14041 .set_property = drm_atomic_helper_crtc_set_property,
14042 .destroy = intel_crtc_destroy,
14043 .page_flip = intel_crtc_page_flip,
14044 .atomic_duplicate_state = intel_crtc_duplicate_state,
14045 .atomic_destroy_state = intel_crtc_destroy_state,
14049 * intel_prepare_plane_fb - Prepare fb for usage on plane
14050 * @plane: drm plane to prepare for
14051 * @fb: framebuffer to prepare for presentation
14053 * Prepares a framebuffer for usage on a display plane. Generally this
14054 * involves pinning the underlying object and updating the frontbuffer tracking
14055 * bits. Some older platforms need special physical address handling for
14058 * Must be called with struct_mutex held.
14060 * Returns 0 on success, negative error code on failure.
14063 intel_prepare_plane_fb(struct drm_plane *plane,
14064 const struct drm_plane_state *new_state)
14066 struct drm_device *dev = plane->dev;
14067 struct drm_framebuffer *fb = new_state->fb;
14068 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
14069 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb);
14070 struct reservation_object *resv;
14073 if (!obj && !old_obj)
14077 struct drm_crtc_state *crtc_state =
14078 drm_atomic_get_existing_crtc_state(new_state->state, plane->state->crtc);
14080 /* Big Hammer, we also need to ensure that any pending
14081 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
14082 * current scanout is retired before unpinning the old
14083 * framebuffer. Note that we rely on userspace rendering
14084 * into the buffer attached to the pipe they are waiting
14085 * on. If not, userspace generates a GPU hang with IPEHR
14086 * point to the MI_WAIT_FOR_EVENT.
14088 * This should only fail upon a hung GPU, in which case we
14089 * can safely continue.
14091 if (needs_modeset(crtc_state))
14092 ret = i915_gem_object_wait_rendering(old_obj, true);
14094 /* GPU hangs should have been swallowed by the wait */
14095 WARN_ON(ret == -EIO);
14103 /* For framebuffer backed by dmabuf, wait for fence */
14104 resv = i915_gem_object_get_dmabuf_resv(obj);
14108 lret = reservation_object_wait_timeout_rcu(resv, false, true,
14109 MAX_SCHEDULE_TIMEOUT);
14110 if (lret == -ERESTARTSYS)
14113 WARN(lret < 0, "waiting returns %li\n", lret);
14116 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
14117 INTEL_INFO(dev)->cursor_needs_physical) {
14118 int align = IS_I830(dev) ? 16 * 1024 : 256;
14119 ret = i915_gem_object_attach_phys(obj, align);
14121 DRM_DEBUG_KMS("failed to attach phys object\n");
14123 ret = intel_pin_and_fence_fb_obj(fb, new_state->rotation);
14127 struct intel_plane_state *plane_state =
14128 to_intel_plane_state(new_state);
14130 i915_gem_request_assign(&plane_state->wait_req,
14131 obj->last_write_req);
14138 * intel_cleanup_plane_fb - Cleans up an fb after plane use
14139 * @plane: drm plane to clean up for
14140 * @fb: old framebuffer that was on plane
14142 * Cleans up a framebuffer that has just been removed from a plane.
14144 * Must be called with struct_mutex held.
14147 intel_cleanup_plane_fb(struct drm_plane *plane,
14148 const struct drm_plane_state *old_state)
14150 struct drm_device *dev = plane->dev;
14151 struct intel_plane_state *old_intel_state;
14152 struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
14153 struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb);
14155 old_intel_state = to_intel_plane_state(old_state);
14157 if (!obj && !old_obj)
14160 if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
14161 !INTEL_INFO(dev)->cursor_needs_physical))
14162 intel_unpin_fb_obj(old_state->fb, old_state->rotation);
14164 i915_gem_request_assign(&old_intel_state->wait_req, NULL);
14168 skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
14171 struct drm_device *dev;
14172 struct drm_i915_private *dev_priv;
14173 int crtc_clock, cdclk;
14175 if (!intel_crtc || !crtc_state->base.enable)
14176 return DRM_PLANE_HELPER_NO_SCALING;
14178 dev = intel_crtc->base.dev;
14179 dev_priv = dev->dev_private;
14180 crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
14181 cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk;
14183 if (WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock))
14184 return DRM_PLANE_HELPER_NO_SCALING;
14187 * skl max scale is lower of:
14188 * close to 3 but not 3, -1 is for that purpose
14192 max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
14198 intel_check_primary_plane(struct drm_plane *plane,
14199 struct intel_crtc_state *crtc_state,
14200 struct intel_plane_state *state)
14202 struct drm_crtc *crtc = state->base.crtc;
14203 struct drm_framebuffer *fb = state->base.fb;
14204 int min_scale = DRM_PLANE_HELPER_NO_SCALING;
14205 int max_scale = DRM_PLANE_HELPER_NO_SCALING;
14206 bool can_position = false;
14208 if (INTEL_INFO(plane->dev)->gen >= 9) {
14209 /* use scaler when colorkey is not required */
14210 if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
14212 max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
14214 can_position = true;
14217 return drm_plane_helper_check_update(plane, crtc, fb, &state->src,
14218 &state->dst, &state->clip,
14219 state->base.rotation,
14220 min_scale, max_scale,
14221 can_position, true,
14225 static void intel_begin_crtc_commit(struct drm_crtc *crtc,
14226 struct drm_crtc_state *old_crtc_state)
14228 struct drm_device *dev = crtc->dev;
14229 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
14230 struct intel_crtc_state *old_intel_state =
14231 to_intel_crtc_state(old_crtc_state);
14232 bool modeset = needs_modeset(crtc->state);
14234 /* Perform vblank evasion around commit operation */
14235 intel_pipe_update_start(intel_crtc);
14240 if (crtc->state->color_mgmt_changed || to_intel_crtc_state(crtc->state)->update_pipe) {
14241 intel_color_set_csc(crtc->state);
14242 intel_color_load_luts(crtc->state);
14245 if (to_intel_crtc_state(crtc->state)->update_pipe)
14246 intel_update_pipe_config(intel_crtc, old_intel_state);
14247 else if (INTEL_INFO(dev)->gen >= 9)
14248 skl_detach_scalers(intel_crtc);
14251 static void intel_finish_crtc_commit(struct drm_crtc *crtc,
14252 struct drm_crtc_state *old_crtc_state)
14254 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
14256 intel_pipe_update_end(intel_crtc, NULL);
14260 * intel_plane_destroy - destroy a plane
14261 * @plane: plane to destroy
14263 * Common destruction function for all types of planes (primary, cursor,
14266 void intel_plane_destroy(struct drm_plane *plane)
14271 drm_plane_cleanup(plane);
14272 kfree(to_intel_plane(plane));
14275 const struct drm_plane_funcs intel_plane_funcs = {
14276 .update_plane = drm_atomic_helper_update_plane,
14277 .disable_plane = drm_atomic_helper_disable_plane,
14278 .destroy = intel_plane_destroy,
14279 .set_property = drm_atomic_helper_plane_set_property,
14280 .atomic_get_property = intel_plane_atomic_get_property,
14281 .atomic_set_property = intel_plane_atomic_set_property,
14282 .atomic_duplicate_state = intel_plane_duplicate_state,
14283 .atomic_destroy_state = intel_plane_destroy_state,
14287 static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
14290 struct intel_plane *primary = NULL;
14291 struct intel_plane_state *state = NULL;
14292 const uint32_t *intel_primary_formats;
14293 unsigned int num_formats;
14296 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
14300 state = intel_create_plane_state(&primary->base);
14303 primary->base.state = &state->base;
14305 primary->can_scale = false;
14306 primary->max_downscale = 1;
14307 if (INTEL_INFO(dev)->gen >= 9) {
14308 primary->can_scale = true;
14309 state->scaler_id = -1;
14311 primary->pipe = pipe;
14312 primary->plane = pipe;
14313 primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
14314 primary->check_plane = intel_check_primary_plane;
14315 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
14316 primary->plane = !pipe;
14318 if (INTEL_INFO(dev)->gen >= 9) {
14319 intel_primary_formats = skl_primary_formats;
14320 num_formats = ARRAY_SIZE(skl_primary_formats);
14322 primary->update_plane = skylake_update_primary_plane;
14323 primary->disable_plane = skylake_disable_primary_plane;
14324 } else if (HAS_PCH_SPLIT(dev)) {
14325 intel_primary_formats = i965_primary_formats;
14326 num_formats = ARRAY_SIZE(i965_primary_formats);
14328 primary->update_plane = ironlake_update_primary_plane;
14329 primary->disable_plane = i9xx_disable_primary_plane;
14330 } else if (INTEL_INFO(dev)->gen >= 4) {
14331 intel_primary_formats = i965_primary_formats;
14332 num_formats = ARRAY_SIZE(i965_primary_formats);
14334 primary->update_plane = i9xx_update_primary_plane;
14335 primary->disable_plane = i9xx_disable_primary_plane;
14337 intel_primary_formats = i8xx_primary_formats;
14338 num_formats = ARRAY_SIZE(i8xx_primary_formats);
14340 primary->update_plane = i9xx_update_primary_plane;
14341 primary->disable_plane = i9xx_disable_primary_plane;
14344 if (INTEL_INFO(dev)->gen >= 9)
14345 ret = drm_universal_plane_init(dev, &primary->base, 0,
14346 &intel_plane_funcs,
14347 intel_primary_formats, num_formats,
14348 DRM_PLANE_TYPE_PRIMARY,
14349 "plane 1%c", pipe_name(pipe));
14350 else if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
14351 ret = drm_universal_plane_init(dev, &primary->base, 0,
14352 &intel_plane_funcs,
14353 intel_primary_formats, num_formats,
14354 DRM_PLANE_TYPE_PRIMARY,
14355 "primary %c", pipe_name(pipe));
14357 ret = drm_universal_plane_init(dev, &primary->base, 0,
14358 &intel_plane_funcs,
14359 intel_primary_formats, num_formats,
14360 DRM_PLANE_TYPE_PRIMARY,
14361 "plane %c", plane_name(primary->plane));
14365 if (INTEL_INFO(dev)->gen >= 4)
14366 intel_create_rotation_property(dev, primary);
14368 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
14370 return &primary->base;
14379 void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
14381 if (!dev->mode_config.rotation_property) {
14382 unsigned long flags = BIT(DRM_ROTATE_0) |
14383 BIT(DRM_ROTATE_180);
14385 if (INTEL_INFO(dev)->gen >= 9)
14386 flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
14388 dev->mode_config.rotation_property =
14389 drm_mode_create_rotation_property(dev, flags);
14391 if (dev->mode_config.rotation_property)
14392 drm_object_attach_property(&plane->base.base,
14393 dev->mode_config.rotation_property,
14394 plane->base.state->rotation);
14398 intel_check_cursor_plane(struct drm_plane *plane,
14399 struct intel_crtc_state *crtc_state,
14400 struct intel_plane_state *state)
14402 struct drm_crtc *crtc = crtc_state->base.crtc;
14403 struct drm_framebuffer *fb = state->base.fb;
14404 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
14405 enum pipe pipe = to_intel_plane(plane)->pipe;
14409 ret = drm_plane_helper_check_update(plane, crtc, fb, &state->src,
14410 &state->dst, &state->clip,
14411 state->base.rotation,
14412 DRM_PLANE_HELPER_NO_SCALING,
14413 DRM_PLANE_HELPER_NO_SCALING,
14414 true, true, &state->visible);
14418 /* if we want to turn off the cursor ignore width and height */
14422 /* Check for which cursor types we support */
14423 if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) {
14424 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
14425 state->base.crtc_w, state->base.crtc_h);
14429 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
14430 if (obj->base.size < stride * state->base.crtc_h) {
14431 DRM_DEBUG_KMS("buffer is too small\n");
14435 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
14436 DRM_DEBUG_KMS("cursor cannot be tiled\n");
14441 * There's something wrong with the cursor on CHV pipe C.
14442 * If it straddles the left edge of the screen then
14443 * moving it away from the edge or disabling it often
14444 * results in a pipe underrun, and often that can lead to
14445 * dead pipe (constant underrun reported, and it scans
14446 * out just a solid color). To recover from that, the
14447 * display power well must be turned off and on again.
14448 * Refuse the put the cursor into that compromised position.
14450 if (IS_CHERRYVIEW(plane->dev) && pipe == PIPE_C &&
14451 state->visible && state->base.crtc_x < 0) {
14452 DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n");
14460 intel_disable_cursor_plane(struct drm_plane *plane,
14461 struct drm_crtc *crtc)
14463 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
14465 intel_crtc->cursor_addr = 0;
14466 intel_crtc_update_cursor(crtc, NULL);
14470 intel_update_cursor_plane(struct drm_plane *plane,
14471 const struct intel_crtc_state *crtc_state,
14472 const struct intel_plane_state *state)
14474 struct drm_crtc *crtc = crtc_state->base.crtc;
14475 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
14476 struct drm_device *dev = plane->dev;
14477 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
14482 else if (!INTEL_INFO(dev)->cursor_needs_physical)
14483 addr = i915_gem_obj_ggtt_offset(obj);
14485 addr = obj->phys_handle->busaddr;
14487 intel_crtc->cursor_addr = addr;
14488 intel_crtc_update_cursor(crtc, state);
14491 static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
14494 struct intel_plane *cursor = NULL;
14495 struct intel_plane_state *state = NULL;
14498 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
14502 state = intel_create_plane_state(&cursor->base);
14505 cursor->base.state = &state->base;
14507 cursor->can_scale = false;
14508 cursor->max_downscale = 1;
14509 cursor->pipe = pipe;
14510 cursor->plane = pipe;
14511 cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
14512 cursor->check_plane = intel_check_cursor_plane;
14513 cursor->update_plane = intel_update_cursor_plane;
14514 cursor->disable_plane = intel_disable_cursor_plane;
14516 ret = drm_universal_plane_init(dev, &cursor->base, 0,
14517 &intel_plane_funcs,
14518 intel_cursor_formats,
14519 ARRAY_SIZE(intel_cursor_formats),
14520 DRM_PLANE_TYPE_CURSOR,
14521 "cursor %c", pipe_name(pipe));
14525 if (INTEL_INFO(dev)->gen >= 4) {
14526 if (!dev->mode_config.rotation_property)
14527 dev->mode_config.rotation_property =
14528 drm_mode_create_rotation_property(dev,
14529 BIT(DRM_ROTATE_0) |
14530 BIT(DRM_ROTATE_180));
14531 if (dev->mode_config.rotation_property)
14532 drm_object_attach_property(&cursor->base.base,
14533 dev->mode_config.rotation_property,
14534 state->base.rotation);
14537 if (INTEL_INFO(dev)->gen >=9)
14538 state->scaler_id = -1;
14540 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
14542 return &cursor->base;
14551 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
14552 struct intel_crtc_state *crtc_state)
14555 struct intel_scaler *intel_scaler;
14556 struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
14558 for (i = 0; i < intel_crtc->num_scalers; i++) {
14559 intel_scaler = &scaler_state->scalers[i];
14560 intel_scaler->in_use = 0;
14561 intel_scaler->mode = PS_SCALER_MODE_DYN;
14564 scaler_state->scaler_id = -1;
14567 static void intel_crtc_init(struct drm_device *dev, int pipe)
14569 struct drm_i915_private *dev_priv = dev->dev_private;
14570 struct intel_crtc *intel_crtc;
14571 struct intel_crtc_state *crtc_state = NULL;
14572 struct drm_plane *primary = NULL;
14573 struct drm_plane *cursor = NULL;
14576 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
14577 if (intel_crtc == NULL)
14580 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
14583 intel_crtc->config = crtc_state;
14584 intel_crtc->base.state = &crtc_state->base;
14585 crtc_state->base.crtc = &intel_crtc->base;
14587 /* initialize shared scalers */
14588 if (INTEL_INFO(dev)->gen >= 9) {
14589 if (pipe == PIPE_C)
14590 intel_crtc->num_scalers = 1;
14592 intel_crtc->num_scalers = SKL_NUM_SCALERS;
14594 skl_init_scalers(dev, intel_crtc, crtc_state);
14597 primary = intel_primary_plane_create(dev, pipe);
14601 cursor = intel_cursor_plane_create(dev, pipe);
14605 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
14606 cursor, &intel_crtc_funcs,
14607 "pipe %c", pipe_name(pipe));
14612 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
14613 * is hooked to pipe B. Hence we want plane A feeding pipe B.
14615 intel_crtc->pipe = pipe;
14616 intel_crtc->plane = pipe;
14617 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
14618 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
14619 intel_crtc->plane = !pipe;
14622 intel_crtc->cursor_base = ~0;
14623 intel_crtc->cursor_cntl = ~0;
14624 intel_crtc->cursor_size = ~0;
14626 intel_crtc->wm.cxsr_allowed = true;
14628 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
14629 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
14630 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
14631 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
14633 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
14635 intel_color_init(&intel_crtc->base);
14637 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
14641 intel_plane_destroy(primary);
14642 intel_plane_destroy(cursor);
14647 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
14649 struct drm_encoder *encoder = connector->base.encoder;
14650 struct drm_device *dev = connector->base.dev;
14652 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
14654 if (!encoder || WARN_ON(!encoder->crtc))
14655 return INVALID_PIPE;
14657 return to_intel_crtc(encoder->crtc)->pipe;
14660 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
14661 struct drm_file *file)
14663 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
14664 struct drm_crtc *drmmode_crtc;
14665 struct intel_crtc *crtc;
14667 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
14671 crtc = to_intel_crtc(drmmode_crtc);
14672 pipe_from_crtc_id->pipe = crtc->pipe;
14677 static int intel_encoder_clones(struct intel_encoder *encoder)
14679 struct drm_device *dev = encoder->base.dev;
14680 struct intel_encoder *source_encoder;
14681 int index_mask = 0;
14684 for_each_intel_encoder(dev, source_encoder) {
14685 if (encoders_cloneable(encoder, source_encoder))
14686 index_mask |= (1 << entry);
14694 static bool has_edp_a(struct drm_device *dev)
14696 struct drm_i915_private *dev_priv = dev->dev_private;
14698 if (!IS_MOBILE(dev))
14701 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
14704 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
14710 static bool intel_crt_present(struct drm_device *dev)
14712 struct drm_i915_private *dev_priv = dev->dev_private;
14714 if (INTEL_INFO(dev)->gen >= 9)
14717 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
14720 if (IS_CHERRYVIEW(dev))
14723 if (HAS_PCH_LPT_H(dev) && I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED)
14726 /* DDI E can't be used if DDI A requires 4 lanes */
14727 if (HAS_DDI(dev) && I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
14730 if (!dev_priv->vbt.int_crt_support)
14736 static void intel_setup_outputs(struct drm_device *dev)
14738 struct drm_i915_private *dev_priv = dev->dev_private;
14739 struct intel_encoder *encoder;
14740 bool dpd_is_edp = false;
14743 * intel_edp_init_connector() depends on this completing first, to
14744 * prevent the registeration of both eDP and LVDS and the incorrect
14745 * sharing of the PPS.
14747 intel_lvds_init(dev);
14749 if (intel_crt_present(dev))
14750 intel_crt_init(dev);
14752 if (IS_BROXTON(dev)) {
14754 * FIXME: Broxton doesn't support port detection via the
14755 * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
14756 * detect the ports.
14758 intel_ddi_init(dev, PORT_A);
14759 intel_ddi_init(dev, PORT_B);
14760 intel_ddi_init(dev, PORT_C);
14762 intel_dsi_init(dev);
14763 } else if (HAS_DDI(dev)) {
14767 * Haswell uses DDI functions to detect digital outputs.
14768 * On SKL pre-D0 the strap isn't connected, so we assume
14771 found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
14772 /* WaIgnoreDDIAStrap: skl */
14773 if (found || IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
14774 intel_ddi_init(dev, PORT_A);
14776 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
14778 found = I915_READ(SFUSE_STRAP);
14780 if (found & SFUSE_STRAP_DDIB_DETECTED)
14781 intel_ddi_init(dev, PORT_B);
14782 if (found & SFUSE_STRAP_DDIC_DETECTED)
14783 intel_ddi_init(dev, PORT_C);
14784 if (found & SFUSE_STRAP_DDID_DETECTED)
14785 intel_ddi_init(dev, PORT_D);
14787 * On SKL we don't have a way to detect DDI-E so we rely on VBT.
14789 if ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) &&
14790 (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
14791 dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
14792 dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
14793 intel_ddi_init(dev, PORT_E);
14795 } else if (HAS_PCH_SPLIT(dev)) {
14797 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
14799 if (has_edp_a(dev))
14800 intel_dp_init(dev, DP_A, PORT_A);
14802 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
14803 /* PCH SDVOB multiplex with HDMIB */
14804 found = intel_sdvo_init(dev, PCH_SDVOB, PORT_B);
14806 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
14807 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
14808 intel_dp_init(dev, PCH_DP_B, PORT_B);
14811 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
14812 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
14814 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
14815 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
14817 if (I915_READ(PCH_DP_C) & DP_DETECTED)
14818 intel_dp_init(dev, PCH_DP_C, PORT_C);
14820 if (I915_READ(PCH_DP_D) & DP_DETECTED)
14821 intel_dp_init(dev, PCH_DP_D, PORT_D);
14822 } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
14823 bool has_edp, has_port;
14826 * The DP_DETECTED bit is the latched state of the DDC
14827 * SDA pin at boot. However since eDP doesn't require DDC
14828 * (no way to plug in a DP->HDMI dongle) the DDC pins for
14829 * eDP ports may have been muxed to an alternate function.
14830 * Thus we can't rely on the DP_DETECTED bit alone to detect
14831 * eDP ports. Consult the VBT as well as DP_DETECTED to
14832 * detect eDP ports.
14834 * Sadly the straps seem to be missing sometimes even for HDMI
14835 * ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap
14836 * and VBT for the presence of the port. Additionally we can't
14837 * trust the port type the VBT declares as we've seen at least
14838 * HDMI ports that the VBT claim are DP or eDP.
14840 has_edp = intel_dp_is_edp(dev, PORT_B);
14841 has_port = intel_bios_is_port_present(dev_priv, PORT_B);
14842 if (I915_READ(VLV_DP_B) & DP_DETECTED || has_port)
14843 has_edp &= intel_dp_init(dev, VLV_DP_B, PORT_B);
14844 if ((I915_READ(VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp)
14845 intel_hdmi_init(dev, VLV_HDMIB, PORT_B);
14847 has_edp = intel_dp_is_edp(dev, PORT_C);
14848 has_port = intel_bios_is_port_present(dev_priv, PORT_C);
14849 if (I915_READ(VLV_DP_C) & DP_DETECTED || has_port)
14850 has_edp &= intel_dp_init(dev, VLV_DP_C, PORT_C);
14851 if ((I915_READ(VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp)
14852 intel_hdmi_init(dev, VLV_HDMIC, PORT_C);
14854 if (IS_CHERRYVIEW(dev)) {
14856 * eDP not supported on port D,
14857 * so no need to worry about it
14859 has_port = intel_bios_is_port_present(dev_priv, PORT_D);
14860 if (I915_READ(CHV_DP_D) & DP_DETECTED || has_port)
14861 intel_dp_init(dev, CHV_DP_D, PORT_D);
14862 if (I915_READ(CHV_HDMID) & SDVO_DETECTED || has_port)
14863 intel_hdmi_init(dev, CHV_HDMID, PORT_D);
14866 intel_dsi_init(dev);
14867 } else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) {
14868 bool found = false;
14870 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14871 DRM_DEBUG_KMS("probing SDVOB\n");
14872 found = intel_sdvo_init(dev, GEN3_SDVOB, PORT_B);
14873 if (!found && IS_G4X(dev)) {
14874 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
14875 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
14878 if (!found && IS_G4X(dev))
14879 intel_dp_init(dev, DP_B, PORT_B);
14882 /* Before G4X SDVOC doesn't have its own detect register */
14884 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14885 DRM_DEBUG_KMS("probing SDVOC\n");
14886 found = intel_sdvo_init(dev, GEN3_SDVOC, PORT_C);
14889 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
14892 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
14893 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
14896 intel_dp_init(dev, DP_C, PORT_C);
14900 (I915_READ(DP_D) & DP_DETECTED))
14901 intel_dp_init(dev, DP_D, PORT_D);
14902 } else if (IS_GEN2(dev))
14903 intel_dvo_init(dev);
14905 if (SUPPORTS_TV(dev))
14906 intel_tv_init(dev);
14908 intel_psr_init(dev);
14910 for_each_intel_encoder(dev, encoder) {
14911 encoder->base.possible_crtcs = encoder->crtc_mask;
14912 encoder->base.possible_clones =
14913 intel_encoder_clones(encoder);
14916 intel_init_pch_refclk(dev);
14918 drm_helper_move_panel_connectors_to_head(dev);
14921 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
14923 struct drm_device *dev = fb->dev;
14924 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14926 drm_framebuffer_cleanup(fb);
14927 mutex_lock(&dev->struct_mutex);
14928 WARN_ON(!intel_fb->obj->framebuffer_references--);
14929 drm_gem_object_unreference(&intel_fb->obj->base);
14930 mutex_unlock(&dev->struct_mutex);
14934 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
14935 struct drm_file *file,
14936 unsigned int *handle)
14938 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14939 struct drm_i915_gem_object *obj = intel_fb->obj;
14941 if (obj->userptr.mm) {
14942 DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
14946 return drm_gem_handle_create(file, &obj->base, handle);
14949 static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
14950 struct drm_file *file,
14951 unsigned flags, unsigned color,
14952 struct drm_clip_rect *clips,
14953 unsigned num_clips)
14955 struct drm_device *dev = fb->dev;
14956 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14957 struct drm_i915_gem_object *obj = intel_fb->obj;
14959 mutex_lock(&dev->struct_mutex);
14960 intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB);
14961 mutex_unlock(&dev->struct_mutex);
14966 static const struct drm_framebuffer_funcs intel_fb_funcs = {
14967 .destroy = intel_user_framebuffer_destroy,
14968 .create_handle = intel_user_framebuffer_create_handle,
14969 .dirty = intel_user_framebuffer_dirty,
14973 u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
14974 uint32_t pixel_format)
14976 u32 gen = INTEL_INFO(dev)->gen;
14979 int cpp = drm_format_plane_cpp(pixel_format, 0);
14981 /* "The stride in bytes must not exceed the of the size of 8K
14982 * pixels and 32K bytes."
14984 return min(8192 * cpp, 32768);
14985 } else if (gen >= 5 && !IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
14987 } else if (gen >= 4) {
14988 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14992 } else if (gen >= 3) {
14993 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14998 /* XXX DSPC is limited to 4k tiled */
15003 static int intel_framebuffer_init(struct drm_device *dev,
15004 struct intel_framebuffer *intel_fb,
15005 struct drm_mode_fb_cmd2 *mode_cmd,
15006 struct drm_i915_gem_object *obj)
15008 struct drm_i915_private *dev_priv = to_i915(dev);
15009 unsigned int aligned_height;
15011 u32 pitch_limit, stride_alignment;
15013 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
15015 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
15016 /* Enforce that fb modifier and tiling mode match, but only for
15017 * X-tiled. This is needed for FBC. */
15018 if (!!(obj->tiling_mode == I915_TILING_X) !=
15019 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
15020 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
15024 if (obj->tiling_mode == I915_TILING_X)
15025 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
15026 else if (obj->tiling_mode == I915_TILING_Y) {
15027 DRM_DEBUG("No Y tiling for legacy addfb\n");
15032 /* Passed in modifier sanity checking. */
15033 switch (mode_cmd->modifier[0]) {
15034 case I915_FORMAT_MOD_Y_TILED:
15035 case I915_FORMAT_MOD_Yf_TILED:
15036 if (INTEL_INFO(dev)->gen < 9) {
15037 DRM_DEBUG("Unsupported tiling 0x%llx!\n",
15038 mode_cmd->modifier[0]);
15041 case DRM_FORMAT_MOD_NONE:
15042 case I915_FORMAT_MOD_X_TILED:
15045 DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
15046 mode_cmd->modifier[0]);
15050 stride_alignment = intel_fb_stride_alignment(dev_priv,
15051 mode_cmd->modifier[0],
15052 mode_cmd->pixel_format);
15053 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
15054 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
15055 mode_cmd->pitches[0], stride_alignment);
15059 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
15060 mode_cmd->pixel_format);
15061 if (mode_cmd->pitches[0] > pitch_limit) {
15062 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
15063 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
15064 "tiled" : "linear",
15065 mode_cmd->pitches[0], pitch_limit);
15069 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
15070 mode_cmd->pitches[0] != obj->stride) {
15071 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
15072 mode_cmd->pitches[0], obj->stride);
15076 /* Reject formats not supported by any plane early. */
15077 switch (mode_cmd->pixel_format) {
15078 case DRM_FORMAT_C8:
15079 case DRM_FORMAT_RGB565:
15080 case DRM_FORMAT_XRGB8888:
15081 case DRM_FORMAT_ARGB8888:
15083 case DRM_FORMAT_XRGB1555:
15084 if (INTEL_INFO(dev)->gen > 3) {
15085 DRM_DEBUG("unsupported pixel format: %s\n",
15086 drm_get_format_name(mode_cmd->pixel_format));
15090 case DRM_FORMAT_ABGR8888:
15091 if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) &&
15092 INTEL_INFO(dev)->gen < 9) {
15093 DRM_DEBUG("unsupported pixel format: %s\n",
15094 drm_get_format_name(mode_cmd->pixel_format));
15098 case DRM_FORMAT_XBGR8888:
15099 case DRM_FORMAT_XRGB2101010:
15100 case DRM_FORMAT_XBGR2101010:
15101 if (INTEL_INFO(dev)->gen < 4) {
15102 DRM_DEBUG("unsupported pixel format: %s\n",
15103 drm_get_format_name(mode_cmd->pixel_format));
15107 case DRM_FORMAT_ABGR2101010:
15108 if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
15109 DRM_DEBUG("unsupported pixel format: %s\n",
15110 drm_get_format_name(mode_cmd->pixel_format));
15114 case DRM_FORMAT_YUYV:
15115 case DRM_FORMAT_UYVY:
15116 case DRM_FORMAT_YVYU:
15117 case DRM_FORMAT_VYUY:
15118 if (INTEL_INFO(dev)->gen < 5) {
15119 DRM_DEBUG("unsupported pixel format: %s\n",
15120 drm_get_format_name(mode_cmd->pixel_format));
15125 DRM_DEBUG("unsupported pixel format: %s\n",
15126 drm_get_format_name(mode_cmd->pixel_format));
15130 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
15131 if (mode_cmd->offsets[0] != 0)
15134 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
15135 mode_cmd->pixel_format,
15136 mode_cmd->modifier[0]);
15137 /* FIXME drm helper for size checks (especially planar formats)? */
15138 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
15141 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
15142 intel_fb->obj = obj;
15144 intel_fill_fb_info(dev_priv, &intel_fb->base);
15146 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
15148 DRM_ERROR("framebuffer init failed %d\n", ret);
15152 intel_fb->obj->framebuffer_references++;
15157 static struct drm_framebuffer *
15158 intel_user_framebuffer_create(struct drm_device *dev,
15159 struct drm_file *filp,
15160 const struct drm_mode_fb_cmd2 *user_mode_cmd)
15162 struct drm_framebuffer *fb;
15163 struct drm_i915_gem_object *obj;
15164 struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
15166 obj = to_intel_bo(drm_gem_object_lookup(filp, mode_cmd.handles[0]));
15167 if (&obj->base == NULL)
15168 return ERR_PTR(-ENOENT);
15170 fb = intel_framebuffer_create(dev, &mode_cmd, obj);
15172 drm_gem_object_unreference_unlocked(&obj->base);
15177 #ifndef CONFIG_DRM_FBDEV_EMULATION
15178 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
15183 static const struct drm_mode_config_funcs intel_mode_funcs = {
15184 .fb_create = intel_user_framebuffer_create,
15185 .output_poll_changed = intel_fbdev_output_poll_changed,
15186 .atomic_check = intel_atomic_check,
15187 .atomic_commit = intel_atomic_commit,
15188 .atomic_state_alloc = intel_atomic_state_alloc,
15189 .atomic_state_clear = intel_atomic_state_clear,
15193 * intel_init_display_hooks - initialize the display modesetting hooks
15194 * @dev_priv: device private
15196 void intel_init_display_hooks(struct drm_i915_private *dev_priv)
15198 if (INTEL_INFO(dev_priv)->gen >= 9) {
15199 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
15200 dev_priv->display.get_initial_plane_config =
15201 skylake_get_initial_plane_config;
15202 dev_priv->display.crtc_compute_clock =
15203 haswell_crtc_compute_clock;
15204 dev_priv->display.crtc_enable = haswell_crtc_enable;
15205 dev_priv->display.crtc_disable = haswell_crtc_disable;
15206 } else if (HAS_DDI(dev_priv)) {
15207 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
15208 dev_priv->display.get_initial_plane_config =
15209 ironlake_get_initial_plane_config;
15210 dev_priv->display.crtc_compute_clock =
15211 haswell_crtc_compute_clock;
15212 dev_priv->display.crtc_enable = haswell_crtc_enable;
15213 dev_priv->display.crtc_disable = haswell_crtc_disable;
15214 } else if (HAS_PCH_SPLIT(dev_priv)) {
15215 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
15216 dev_priv->display.get_initial_plane_config =
15217 ironlake_get_initial_plane_config;
15218 dev_priv->display.crtc_compute_clock =
15219 ironlake_crtc_compute_clock;
15220 dev_priv->display.crtc_enable = ironlake_crtc_enable;
15221 dev_priv->display.crtc_disable = ironlake_crtc_disable;
15222 } else if (IS_CHERRYVIEW(dev_priv)) {
15223 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15224 dev_priv->display.get_initial_plane_config =
15225 i9xx_get_initial_plane_config;
15226 dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
15227 dev_priv->display.crtc_enable = valleyview_crtc_enable;
15228 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15229 } else if (IS_VALLEYVIEW(dev_priv)) {
15230 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15231 dev_priv->display.get_initial_plane_config =
15232 i9xx_get_initial_plane_config;
15233 dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
15234 dev_priv->display.crtc_enable = valleyview_crtc_enable;
15235 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15236 } else if (IS_G4X(dev_priv)) {
15237 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15238 dev_priv->display.get_initial_plane_config =
15239 i9xx_get_initial_plane_config;
15240 dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
15241 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15242 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15243 } else if (IS_PINEVIEW(dev_priv)) {
15244 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15245 dev_priv->display.get_initial_plane_config =
15246 i9xx_get_initial_plane_config;
15247 dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
15248 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15249 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15250 } else if (!IS_GEN2(dev_priv)) {
15251 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15252 dev_priv->display.get_initial_plane_config =
15253 i9xx_get_initial_plane_config;
15254 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
15255 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15256 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15258 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15259 dev_priv->display.get_initial_plane_config =
15260 i9xx_get_initial_plane_config;
15261 dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
15262 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15263 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15266 /* Returns the core display clock speed */
15267 if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
15268 dev_priv->display.get_display_clock_speed =
15269 skylake_get_display_clock_speed;
15270 else if (IS_BROXTON(dev_priv))
15271 dev_priv->display.get_display_clock_speed =
15272 broxton_get_display_clock_speed;
15273 else if (IS_BROADWELL(dev_priv))
15274 dev_priv->display.get_display_clock_speed =
15275 broadwell_get_display_clock_speed;
15276 else if (IS_HASWELL(dev_priv))
15277 dev_priv->display.get_display_clock_speed =
15278 haswell_get_display_clock_speed;
15279 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
15280 dev_priv->display.get_display_clock_speed =
15281 valleyview_get_display_clock_speed;
15282 else if (IS_GEN5(dev_priv))
15283 dev_priv->display.get_display_clock_speed =
15284 ilk_get_display_clock_speed;
15285 else if (IS_I945G(dev_priv) || IS_BROADWATER(dev_priv) ||
15286 IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv))
15287 dev_priv->display.get_display_clock_speed =
15288 i945_get_display_clock_speed;
15289 else if (IS_GM45(dev_priv))
15290 dev_priv->display.get_display_clock_speed =
15291 gm45_get_display_clock_speed;
15292 else if (IS_CRESTLINE(dev_priv))
15293 dev_priv->display.get_display_clock_speed =
15294 i965gm_get_display_clock_speed;
15295 else if (IS_PINEVIEW(dev_priv))
15296 dev_priv->display.get_display_clock_speed =
15297 pnv_get_display_clock_speed;
15298 else if (IS_G33(dev_priv) || IS_G4X(dev_priv))
15299 dev_priv->display.get_display_clock_speed =
15300 g33_get_display_clock_speed;
15301 else if (IS_I915G(dev_priv))
15302 dev_priv->display.get_display_clock_speed =
15303 i915_get_display_clock_speed;
15304 else if (IS_I945GM(dev_priv) || IS_845G(dev_priv))
15305 dev_priv->display.get_display_clock_speed =
15306 i9xx_misc_get_display_clock_speed;
15307 else if (IS_I915GM(dev_priv))
15308 dev_priv->display.get_display_clock_speed =
15309 i915gm_get_display_clock_speed;
15310 else if (IS_I865G(dev_priv))
15311 dev_priv->display.get_display_clock_speed =
15312 i865_get_display_clock_speed;
15313 else if (IS_I85X(dev_priv))
15314 dev_priv->display.get_display_clock_speed =
15315 i85x_get_display_clock_speed;
15317 WARN(!IS_I830(dev_priv), "Unknown platform. Assuming 133 MHz CDCLK\n");
15318 dev_priv->display.get_display_clock_speed =
15319 i830_get_display_clock_speed;
15322 if (IS_GEN5(dev_priv)) {
15323 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
15324 } else if (IS_GEN6(dev_priv)) {
15325 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
15326 } else if (IS_IVYBRIDGE(dev_priv)) {
15327 /* FIXME: detect B0+ stepping and use auto training */
15328 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
15329 } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
15330 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
15333 if (IS_BROADWELL(dev_priv)) {
15334 dev_priv->display.modeset_commit_cdclk =
15335 broadwell_modeset_commit_cdclk;
15336 dev_priv->display.modeset_calc_cdclk =
15337 broadwell_modeset_calc_cdclk;
15338 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
15339 dev_priv->display.modeset_commit_cdclk =
15340 valleyview_modeset_commit_cdclk;
15341 dev_priv->display.modeset_calc_cdclk =
15342 valleyview_modeset_calc_cdclk;
15343 } else if (IS_BROXTON(dev_priv)) {
15344 dev_priv->display.modeset_commit_cdclk =
15345 bxt_modeset_commit_cdclk;
15346 dev_priv->display.modeset_calc_cdclk =
15347 bxt_modeset_calc_cdclk;
15348 } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
15349 dev_priv->display.modeset_commit_cdclk =
15350 skl_modeset_commit_cdclk;
15351 dev_priv->display.modeset_calc_cdclk =
15352 skl_modeset_calc_cdclk;
15355 switch (INTEL_INFO(dev_priv)->gen) {
15357 dev_priv->display.queue_flip = intel_gen2_queue_flip;
15361 dev_priv->display.queue_flip = intel_gen3_queue_flip;
15366 dev_priv->display.queue_flip = intel_gen4_queue_flip;
15370 dev_priv->display.queue_flip = intel_gen6_queue_flip;
15373 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
15374 dev_priv->display.queue_flip = intel_gen7_queue_flip;
15377 /* Drop through - unsupported since execlist only. */
15379 /* Default just returns -ENODEV to indicate unsupported */
15380 dev_priv->display.queue_flip = intel_default_queue_flip;
15385 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
15386 * resume, or other times. This quirk makes sure that's the case for
15387 * affected systems.
15389 static void quirk_pipea_force(struct drm_device *dev)
15391 struct drm_i915_private *dev_priv = dev->dev_private;
15393 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
15394 DRM_INFO("applying pipe a force quirk\n");
15397 static void quirk_pipeb_force(struct drm_device *dev)
15399 struct drm_i915_private *dev_priv = dev->dev_private;
15401 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
15402 DRM_INFO("applying pipe b force quirk\n");
15406 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
15408 static void quirk_ssc_force_disable(struct drm_device *dev)
15410 struct drm_i915_private *dev_priv = dev->dev_private;
15411 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
15412 DRM_INFO("applying lvds SSC disable quirk\n");
15416 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
15419 static void quirk_invert_brightness(struct drm_device *dev)
15421 struct drm_i915_private *dev_priv = dev->dev_private;
15422 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
15423 DRM_INFO("applying inverted panel brightness quirk\n");
15426 /* Some VBT's incorrectly indicate no backlight is present */
15427 static void quirk_backlight_present(struct drm_device *dev)
15429 struct drm_i915_private *dev_priv = dev->dev_private;
15430 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
15431 DRM_INFO("applying backlight present quirk\n");
15434 struct intel_quirk {
15436 int subsystem_vendor;
15437 int subsystem_device;
15438 void (*hook)(struct drm_device *dev);
15441 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
15442 struct intel_dmi_quirk {
15443 void (*hook)(struct drm_device *dev);
15444 const struct dmi_system_id (*dmi_id_list)[];
15447 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
15449 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
15453 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
15455 .dmi_id_list = &(const struct dmi_system_id[]) {
15457 .callback = intel_dmi_reverse_brightness,
15458 .ident = "NCR Corporation",
15459 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
15460 DMI_MATCH(DMI_PRODUCT_NAME, ""),
15463 { } /* terminating entry */
15465 .hook = quirk_invert_brightness,
15469 static struct intel_quirk intel_quirks[] = {
15470 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
15471 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
15473 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
15474 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
15476 /* 830 needs to leave pipe A & dpll A up */
15477 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
15479 /* 830 needs to leave pipe B & dpll B up */
15480 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
15482 /* Lenovo U160 cannot use SSC on LVDS */
15483 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
15485 /* Sony Vaio Y cannot use SSC on LVDS */
15486 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
15488 /* Acer Aspire 5734Z must invert backlight brightness */
15489 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
15491 /* Acer/eMachines G725 */
15492 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
15494 /* Acer/eMachines e725 */
15495 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
15497 /* Acer/Packard Bell NCL20 */
15498 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
15500 /* Acer Aspire 4736Z */
15501 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
15503 /* Acer Aspire 5336 */
15504 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
15506 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
15507 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
15509 /* Acer C720 Chromebook (Core i3 4005U) */
15510 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
15512 /* Apple Macbook 2,1 (Core 2 T7400) */
15513 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
15515 /* Apple Macbook 4,1 */
15516 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
15518 /* Toshiba CB35 Chromebook (Celeron 2955U) */
15519 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
15521 /* HP Chromebook 14 (Celeron 2955U) */
15522 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
15524 /* Dell Chromebook 11 */
15525 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
15527 /* Dell Chromebook 11 (2015 version) */
15528 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
15531 static void intel_init_quirks(struct drm_device *dev)
15533 struct pci_dev *d = dev->pdev;
15536 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
15537 struct intel_quirk *q = &intel_quirks[i];
15539 if (d->device == q->device &&
15540 (d->subsystem_vendor == q->subsystem_vendor ||
15541 q->subsystem_vendor == PCI_ANY_ID) &&
15542 (d->subsystem_device == q->subsystem_device ||
15543 q->subsystem_device == PCI_ANY_ID))
15546 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
15547 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
15548 intel_dmi_quirks[i].hook(dev);
15552 /* Disable the VGA plane that we never use */
15553 static void i915_disable_vga(struct drm_device *dev)
15555 struct drm_i915_private *dev_priv = dev->dev_private;
15557 i915_reg_t vga_reg = i915_vgacntrl_reg(dev);
15559 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
15560 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
15561 outb(SR01, VGA_SR_INDEX);
15562 sr1 = inb(VGA_SR_DATA);
15563 outb(sr1 | 1<<5, VGA_SR_DATA);
15564 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
15567 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
15568 POSTING_READ(vga_reg);
15571 void intel_modeset_init_hw(struct drm_device *dev)
15573 struct drm_i915_private *dev_priv = dev->dev_private;
15575 intel_update_cdclk(dev);
15577 dev_priv->atomic_cdclk_freq = dev_priv->cdclk_freq;
15579 intel_init_clock_gating(dev);
15580 intel_enable_gt_powersave(dev_priv);
15584 * Calculate what we think the watermarks should be for the state we've read
15585 * out of the hardware and then immediately program those watermarks so that
15586 * we ensure the hardware settings match our internal state.
15588 * We can calculate what we think WM's should be by creating a duplicate of the
15589 * current state (which was constructed during hardware readout) and running it
15590 * through the atomic check code to calculate new watermark values in the
15593 static void sanitize_watermarks(struct drm_device *dev)
15595 struct drm_i915_private *dev_priv = to_i915(dev);
15596 struct drm_atomic_state *state;
15597 struct drm_crtc *crtc;
15598 struct drm_crtc_state *cstate;
15599 struct drm_modeset_acquire_ctx ctx;
15603 /* Only supported on platforms that use atomic watermark design */
15604 if (!dev_priv->display.optimize_watermarks)
15608 * We need to hold connection_mutex before calling duplicate_state so
15609 * that the connector loop is protected.
15611 drm_modeset_acquire_init(&ctx, 0);
15613 ret = drm_modeset_lock_all_ctx(dev, &ctx);
15614 if (ret == -EDEADLK) {
15615 drm_modeset_backoff(&ctx);
15617 } else if (WARN_ON(ret)) {
15621 state = drm_atomic_helper_duplicate_state(dev, &ctx);
15622 if (WARN_ON(IS_ERR(state)))
15626 * Hardware readout is the only time we don't want to calculate
15627 * intermediate watermarks (since we don't trust the current
15630 to_intel_atomic_state(state)->skip_intermediate_wm = true;
15632 ret = intel_atomic_check(dev, state);
15635 * If we fail here, it means that the hardware appears to be
15636 * programmed in a way that shouldn't be possible, given our
15637 * understanding of watermark requirements. This might mean a
15638 * mistake in the hardware readout code or a mistake in the
15639 * watermark calculations for a given platform. Raise a WARN
15640 * so that this is noticeable.
15642 * If this actually happens, we'll have to just leave the
15643 * BIOS-programmed watermarks untouched and hope for the best.
15645 WARN(true, "Could not determine valid watermarks for inherited state\n");
15649 /* Write calculated watermark values back */
15650 for_each_crtc_in_state(state, crtc, cstate, i) {
15651 struct intel_crtc_state *cs = to_intel_crtc_state(cstate);
15653 cs->wm.need_postvbl_update = true;
15654 dev_priv->display.optimize_watermarks(cs);
15657 drm_atomic_state_free(state);
15659 drm_modeset_drop_locks(&ctx);
15660 drm_modeset_acquire_fini(&ctx);
15663 void intel_modeset_init(struct drm_device *dev)
15665 struct drm_i915_private *dev_priv = to_i915(dev);
15666 struct i915_ggtt *ggtt = &dev_priv->ggtt;
15669 struct intel_crtc *crtc;
15671 drm_mode_config_init(dev);
15673 dev->mode_config.min_width = 0;
15674 dev->mode_config.min_height = 0;
15676 dev->mode_config.preferred_depth = 24;
15677 dev->mode_config.prefer_shadow = 1;
15679 dev->mode_config.allow_fb_modifiers = true;
15681 dev->mode_config.funcs = &intel_mode_funcs;
15683 intel_init_quirks(dev);
15685 intel_init_pm(dev);
15687 if (INTEL_INFO(dev)->num_pipes == 0)
15691 * There may be no VBT; and if the BIOS enabled SSC we can
15692 * just keep using it to avoid unnecessary flicker. Whereas if the
15693 * BIOS isn't using it, don't assume it will work even if the VBT
15694 * indicates as much.
15696 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
15697 bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
15700 if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
15701 DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
15702 bios_lvds_use_ssc ? "en" : "dis",
15703 dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
15704 dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
15708 if (IS_GEN2(dev)) {
15709 dev->mode_config.max_width = 2048;
15710 dev->mode_config.max_height = 2048;
15711 } else if (IS_GEN3(dev)) {
15712 dev->mode_config.max_width = 4096;
15713 dev->mode_config.max_height = 4096;
15715 dev->mode_config.max_width = 8192;
15716 dev->mode_config.max_height = 8192;
15719 if (IS_845G(dev) || IS_I865G(dev)) {
15720 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
15721 dev->mode_config.cursor_height = 1023;
15722 } else if (IS_GEN2(dev)) {
15723 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
15724 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
15726 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
15727 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
15730 dev->mode_config.fb_base = ggtt->mappable_base;
15732 DRM_DEBUG_KMS("%d display pipe%s available.\n",
15733 INTEL_INFO(dev)->num_pipes,
15734 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
15736 for_each_pipe(dev_priv, pipe) {
15737 intel_crtc_init(dev, pipe);
15738 for_each_sprite(dev_priv, pipe, sprite) {
15739 ret = intel_plane_init(dev, pipe, sprite);
15741 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
15742 pipe_name(pipe), sprite_name(pipe, sprite), ret);
15746 intel_update_czclk(dev_priv);
15747 intel_update_cdclk(dev);
15749 intel_shared_dpll_init(dev);
15751 if (dev_priv->max_cdclk_freq == 0)
15752 intel_update_max_cdclk(dev);
15754 /* Just disable it once at startup */
15755 i915_disable_vga(dev);
15756 intel_setup_outputs(dev);
15758 drm_modeset_lock_all(dev);
15759 intel_modeset_setup_hw_state(dev);
15760 drm_modeset_unlock_all(dev);
15762 for_each_intel_crtc(dev, crtc) {
15763 struct intel_initial_plane_config plane_config = {};
15769 * Note that reserving the BIOS fb up front prevents us
15770 * from stuffing other stolen allocations like the ring
15771 * on top. This prevents some ugliness at boot time, and
15772 * can even allow for smooth boot transitions if the BIOS
15773 * fb is large enough for the active pipe configuration.
15775 dev_priv->display.get_initial_plane_config(crtc,
15779 * If the fb is shared between multiple heads, we'll
15780 * just get the first one.
15782 intel_find_initial_plane_obj(crtc, &plane_config);
15786 * Make sure hardware watermarks really match the state we read out.
15787 * Note that we need to do this after reconstructing the BIOS fb's
15788 * since the watermark calculation done here will use pstate->fb.
15790 sanitize_watermarks(dev);
15793 static void intel_enable_pipe_a(struct drm_device *dev)
15795 struct intel_connector *connector;
15796 struct drm_connector *crt = NULL;
15797 struct intel_load_detect_pipe load_detect_temp;
15798 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
15800 /* We can't just switch on the pipe A, we need to set things up with a
15801 * proper mode and output configuration. As a gross hack, enable pipe A
15802 * by enabling the load detect pipe once. */
15803 for_each_intel_connector(dev, connector) {
15804 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
15805 crt = &connector->base;
15813 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
15814 intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
15818 intel_check_plane_mapping(struct intel_crtc *crtc)
15820 struct drm_device *dev = crtc->base.dev;
15821 struct drm_i915_private *dev_priv = dev->dev_private;
15824 if (INTEL_INFO(dev)->num_pipes == 1)
15827 val = I915_READ(DSPCNTR(!crtc->plane));
15829 if ((val & DISPLAY_PLANE_ENABLE) &&
15830 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
15836 static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
15838 struct drm_device *dev = crtc->base.dev;
15839 struct intel_encoder *encoder;
15841 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
15847 static bool intel_encoder_has_connectors(struct intel_encoder *encoder)
15849 struct drm_device *dev = encoder->base.dev;
15850 struct intel_connector *connector;
15852 for_each_connector_on_encoder(dev, &encoder->base, connector)
15858 static void intel_sanitize_crtc(struct intel_crtc *crtc)
15860 struct drm_device *dev = crtc->base.dev;
15861 struct drm_i915_private *dev_priv = dev->dev_private;
15862 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
15864 /* Clear any frame start delays used for debugging left by the BIOS */
15865 if (!transcoder_is_dsi(cpu_transcoder)) {
15866 i915_reg_t reg = PIPECONF(cpu_transcoder);
15869 I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
15872 /* restore vblank interrupts to correct state */
15873 drm_crtc_vblank_reset(&crtc->base);
15874 if (crtc->active) {
15875 struct intel_plane *plane;
15877 drm_crtc_vblank_on(&crtc->base);
15879 /* Disable everything but the primary plane */
15880 for_each_intel_plane_on_crtc(dev, crtc, plane) {
15881 if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
15884 plane->disable_plane(&plane->base, &crtc->base);
15888 /* We need to sanitize the plane -> pipe mapping first because this will
15889 * disable the crtc (and hence change the state) if it is wrong. Note
15890 * that gen4+ has a fixed plane -> pipe mapping. */
15891 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
15894 DRM_DEBUG_KMS("[CRTC:%d:%s] wrong plane connection detected!\n",
15895 crtc->base.base.id, crtc->base.name);
15897 /* Pipe has the wrong plane attached and the plane is active.
15898 * Temporarily change the plane mapping and disable everything
15900 plane = crtc->plane;
15901 to_intel_plane_state(crtc->base.primary->state)->visible = true;
15902 crtc->plane = !plane;
15903 intel_crtc_disable_noatomic(&crtc->base);
15904 crtc->plane = plane;
15907 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
15908 crtc->pipe == PIPE_A && !crtc->active) {
15909 /* BIOS forgot to enable pipe A, this mostly happens after
15910 * resume. Force-enable the pipe to fix this, the update_dpms
15911 * call below we restore the pipe to the right state, but leave
15912 * the required bits on. */
15913 intel_enable_pipe_a(dev);
15916 /* Adjust the state of the output pipe according to whether we
15917 * have active connectors/encoders. */
15918 if (crtc->active && !intel_crtc_has_encoders(crtc))
15919 intel_crtc_disable_noatomic(&crtc->base);
15921 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
15923 * We start out with underrun reporting disabled to avoid races.
15924 * For correct bookkeeping mark this on active crtcs.
15926 * Also on gmch platforms we dont have any hardware bits to
15927 * disable the underrun reporting. Which means we need to start
15928 * out with underrun reporting disabled also on inactive pipes,
15929 * since otherwise we'll complain about the garbage we read when
15930 * e.g. coming up after runtime pm.
15932 * No protection against concurrent access is required - at
15933 * worst a fifo underrun happens which also sets this to false.
15935 crtc->cpu_fifo_underrun_disabled = true;
15936 crtc->pch_fifo_underrun_disabled = true;
15940 static void intel_sanitize_encoder(struct intel_encoder *encoder)
15942 struct intel_connector *connector;
15943 struct drm_device *dev = encoder->base.dev;
15945 /* We need to check both for a crtc link (meaning that the
15946 * encoder is active and trying to read from a pipe) and the
15947 * pipe itself being active. */
15948 bool has_active_crtc = encoder->base.crtc &&
15949 to_intel_crtc(encoder->base.crtc)->active;
15951 if (intel_encoder_has_connectors(encoder) && !has_active_crtc) {
15952 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
15953 encoder->base.base.id,
15954 encoder->base.name);
15956 /* Connector is active, but has no active pipe. This is
15957 * fallout from our resume register restoring. Disable
15958 * the encoder manually again. */
15959 if (encoder->base.crtc) {
15960 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
15961 encoder->base.base.id,
15962 encoder->base.name);
15963 encoder->disable(encoder);
15964 if (encoder->post_disable)
15965 encoder->post_disable(encoder);
15967 encoder->base.crtc = NULL;
15969 /* Inconsistent output/port/pipe state happens presumably due to
15970 * a bug in one of the get_hw_state functions. Or someplace else
15971 * in our code, like the register restore mess on resume. Clamp
15972 * things to off as a safer default. */
15973 for_each_intel_connector(dev, connector) {
15974 if (connector->encoder != encoder)
15976 connector->base.dpms = DRM_MODE_DPMS_OFF;
15977 connector->base.encoder = NULL;
15980 /* Enabled encoders without active connectors will be fixed in
15981 * the crtc fixup. */
15984 void i915_redisable_vga_power_on(struct drm_device *dev)
15986 struct drm_i915_private *dev_priv = dev->dev_private;
15987 i915_reg_t vga_reg = i915_vgacntrl_reg(dev);
15989 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
15990 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
15991 i915_disable_vga(dev);
15995 void i915_redisable_vga(struct drm_device *dev)
15997 struct drm_i915_private *dev_priv = dev->dev_private;
15999 /* This function can be called both from intel_modeset_setup_hw_state or
16000 * at a very early point in our resume sequence, where the power well
16001 * structures are not yet restored. Since this function is at a very
16002 * paranoid "someone might have enabled VGA while we were not looking"
16003 * level, just check if the power well is enabled instead of trying to
16004 * follow the "don't touch the power well if we don't need it" policy
16005 * the rest of the driver uses. */
16006 if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_VGA))
16009 i915_redisable_vga_power_on(dev);
16011 intel_display_power_put(dev_priv, POWER_DOMAIN_VGA);
16014 static bool primary_get_hw_state(struct intel_plane *plane)
16016 struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
16018 return I915_READ(DSPCNTR(plane->plane)) & DISPLAY_PLANE_ENABLE;
16021 /* FIXME read out full plane state for all planes */
16022 static void readout_plane_state(struct intel_crtc *crtc)
16024 struct drm_plane *primary = crtc->base.primary;
16025 struct intel_plane_state *plane_state =
16026 to_intel_plane_state(primary->state);
16028 plane_state->visible = crtc->active &&
16029 primary_get_hw_state(to_intel_plane(primary));
16031 if (plane_state->visible)
16032 crtc->base.state->plane_mask |= 1 << drm_plane_index(primary);
16035 static void intel_modeset_readout_hw_state(struct drm_device *dev)
16037 struct drm_i915_private *dev_priv = dev->dev_private;
16039 struct intel_crtc *crtc;
16040 struct intel_encoder *encoder;
16041 struct intel_connector *connector;
16044 dev_priv->active_crtcs = 0;
16046 for_each_intel_crtc(dev, crtc) {
16047 struct intel_crtc_state *crtc_state = crtc->config;
16050 __drm_atomic_helper_crtc_destroy_state(&crtc_state->base);
16051 memset(crtc_state, 0, sizeof(*crtc_state));
16052 crtc_state->base.crtc = &crtc->base;
16054 crtc_state->base.active = crtc_state->base.enable =
16055 dev_priv->display.get_pipe_config(crtc, crtc_state);
16057 crtc->base.enabled = crtc_state->base.enable;
16058 crtc->active = crtc_state->base.active;
16060 if (crtc_state->base.active) {
16061 dev_priv->active_crtcs |= 1 << crtc->pipe;
16063 if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
16064 pixclk = ilk_pipe_pixel_rate(crtc_state);
16065 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
16066 pixclk = crtc_state->base.adjusted_mode.crtc_clock;
16068 WARN_ON(dev_priv->display.modeset_calc_cdclk);
16070 /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
16071 if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled)
16072 pixclk = DIV_ROUND_UP(pixclk * 100, 95);
16075 dev_priv->min_pixclk[crtc->pipe] = pixclk;
16077 readout_plane_state(crtc);
16079 DRM_DEBUG_KMS("[CRTC:%d:%s] hw state readout: %s\n",
16080 crtc->base.base.id, crtc->base.name,
16081 crtc->active ? "enabled" : "disabled");
16084 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
16085 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
16087 pll->on = pll->funcs.get_hw_state(dev_priv, pll,
16088 &pll->config.hw_state);
16089 pll->config.crtc_mask = 0;
16090 for_each_intel_crtc(dev, crtc) {
16091 if (crtc->active && crtc->config->shared_dpll == pll)
16092 pll->config.crtc_mask |= 1 << crtc->pipe;
16094 pll->active_mask = pll->config.crtc_mask;
16096 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
16097 pll->name, pll->config.crtc_mask, pll->on);
16100 for_each_intel_encoder(dev, encoder) {
16103 if (encoder->get_hw_state(encoder, &pipe)) {
16104 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
16105 encoder->base.crtc = &crtc->base;
16106 encoder->get_config(encoder, crtc->config);
16108 encoder->base.crtc = NULL;
16111 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
16112 encoder->base.base.id,
16113 encoder->base.name,
16114 encoder->base.crtc ? "enabled" : "disabled",
16118 for_each_intel_connector(dev, connector) {
16119 if (connector->get_hw_state(connector)) {
16120 connector->base.dpms = DRM_MODE_DPMS_ON;
16122 encoder = connector->encoder;
16123 connector->base.encoder = &encoder->base;
16125 if (encoder->base.crtc &&
16126 encoder->base.crtc->state->active) {
16128 * This has to be done during hardware readout
16129 * because anything calling .crtc_disable may
16130 * rely on the connector_mask being accurate.
16132 encoder->base.crtc->state->connector_mask |=
16133 1 << drm_connector_index(&connector->base);
16134 encoder->base.crtc->state->encoder_mask |=
16135 1 << drm_encoder_index(&encoder->base);
16139 connector->base.dpms = DRM_MODE_DPMS_OFF;
16140 connector->base.encoder = NULL;
16142 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
16143 connector->base.base.id,
16144 connector->base.name,
16145 connector->base.encoder ? "enabled" : "disabled");
16148 for_each_intel_crtc(dev, crtc) {
16149 crtc->base.hwmode = crtc->config->base.adjusted_mode;
16151 memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
16152 if (crtc->base.state->active) {
16153 intel_mode_from_pipe_config(&crtc->base.mode, crtc->config);
16154 intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config);
16155 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
16158 * The initial mode needs to be set in order to keep
16159 * the atomic core happy. It wants a valid mode if the
16160 * crtc's enabled, so we do the above call.
16162 * At this point some state updated by the connectors
16163 * in their ->detect() callback has not run yet, so
16164 * no recalculation can be done yet.
16166 * Even if we could do a recalculation and modeset
16167 * right now it would cause a double modeset if
16168 * fbdev or userspace chooses a different initial mode.
16170 * If that happens, someone indicated they wanted a
16171 * mode change, which means it's safe to do a full
16174 crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED;
16176 drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
16177 update_scanline_offset(crtc);
16180 intel_pipe_config_sanity_check(dev_priv, crtc->config);
16184 /* Scan out the current hw modeset state,
16185 * and sanitizes it to the current state
16188 intel_modeset_setup_hw_state(struct drm_device *dev)
16190 struct drm_i915_private *dev_priv = dev->dev_private;
16192 struct intel_crtc *crtc;
16193 struct intel_encoder *encoder;
16196 intel_modeset_readout_hw_state(dev);
16198 /* HW state is read out, now we need to sanitize this mess. */
16199 for_each_intel_encoder(dev, encoder) {
16200 intel_sanitize_encoder(encoder);
16203 for_each_pipe(dev_priv, pipe) {
16204 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
16205 intel_sanitize_crtc(crtc);
16206 intel_dump_pipe_config(crtc, crtc->config,
16207 "[setup_hw_state]");
16210 intel_modeset_update_connector_atomic_state(dev);
16212 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
16213 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
16215 if (!pll->on || pll->active_mask)
16218 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
16220 pll->funcs.disable(dev_priv, pll);
16224 if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
16225 vlv_wm_get_hw_state(dev);
16226 else if (IS_GEN9(dev))
16227 skl_wm_get_hw_state(dev);
16228 else if (HAS_PCH_SPLIT(dev))
16229 ilk_wm_get_hw_state(dev);
16231 for_each_intel_crtc(dev, crtc) {
16232 unsigned long put_domains;
16234 put_domains = modeset_get_crtc_power_domains(&crtc->base, crtc->config);
16235 if (WARN_ON(put_domains))
16236 modeset_put_power_domains(dev_priv, put_domains);
16238 intel_display_set_init_power(dev_priv, false);
16240 intel_fbc_init_pipe_state(dev_priv);
16243 void intel_display_resume(struct drm_device *dev)
16245 struct drm_i915_private *dev_priv = to_i915(dev);
16246 struct drm_atomic_state *state = dev_priv->modeset_restore_state;
16247 struct drm_modeset_acquire_ctx ctx;
16249 bool setup = false;
16251 dev_priv->modeset_restore_state = NULL;
16254 * This is a cludge because with real atomic modeset mode_config.mutex
16255 * won't be taken. Unfortunately some probed state like
16256 * audio_codec_enable is still protected by mode_config.mutex, so lock
16259 mutex_lock(&dev->mode_config.mutex);
16260 drm_modeset_acquire_init(&ctx, 0);
16263 ret = drm_modeset_lock_all_ctx(dev, &ctx);
16265 if (ret == 0 && !setup) {
16268 intel_modeset_setup_hw_state(dev);
16269 i915_redisable_vga(dev);
16272 if (ret == 0 && state) {
16273 struct drm_crtc_state *crtc_state;
16274 struct drm_crtc *crtc;
16277 state->acquire_ctx = &ctx;
16279 /* ignore any reset values/BIOS leftovers in the WM registers */
16280 to_intel_atomic_state(state)->skip_intermediate_wm = true;
16282 for_each_crtc_in_state(state, crtc, crtc_state, i) {
16284 * Force recalculation even if we restore
16285 * current state. With fast modeset this may not result
16286 * in a modeset when the state is compatible.
16288 crtc_state->mode_changed = true;
16291 ret = drm_atomic_commit(state);
16294 if (ret == -EDEADLK) {
16295 drm_modeset_backoff(&ctx);
16299 drm_modeset_drop_locks(&ctx);
16300 drm_modeset_acquire_fini(&ctx);
16301 mutex_unlock(&dev->mode_config.mutex);
16304 DRM_ERROR("Restoring old state failed with %i\n", ret);
16305 drm_atomic_state_free(state);
16309 void intel_modeset_gem_init(struct drm_device *dev)
16311 struct drm_i915_private *dev_priv = to_i915(dev);
16312 struct drm_crtc *c;
16313 struct drm_i915_gem_object *obj;
16316 intel_init_gt_powersave(dev_priv);
16318 intel_modeset_init_hw(dev);
16320 intel_setup_overlay(dev_priv);
16323 * Make sure any fbs we allocated at startup are properly
16324 * pinned & fenced. When we do the allocation it's too early
16327 for_each_crtc(dev, c) {
16328 obj = intel_fb_obj(c->primary->fb);
16332 mutex_lock(&dev->struct_mutex);
16333 ret = intel_pin_and_fence_fb_obj(c->primary->fb,
16334 c->primary->state->rotation);
16335 mutex_unlock(&dev->struct_mutex);
16337 DRM_ERROR("failed to pin boot fb on pipe %d\n",
16338 to_intel_crtc(c)->pipe);
16339 drm_framebuffer_unreference(c->primary->fb);
16340 c->primary->fb = NULL;
16341 c->primary->crtc = c->primary->state->crtc = NULL;
16342 update_state_fb(c->primary);
16343 c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
16348 int intel_connector_register(struct drm_connector *connector)
16350 struct intel_connector *intel_connector = to_intel_connector(connector);
16353 ret = intel_backlight_device_register(intel_connector);
16363 void intel_connector_unregister(struct drm_connector *connector)
16365 struct intel_connector *intel_connector = to_intel_connector(connector);
16367 intel_backlight_device_unregister(intel_connector);
16368 intel_panel_destroy_backlight(connector);
16371 void intel_modeset_cleanup(struct drm_device *dev)
16373 struct drm_i915_private *dev_priv = dev->dev_private;
16375 intel_disable_gt_powersave(dev_priv);
16378 * Interrupts and polling as the first thing to avoid creating havoc.
16379 * Too much stuff here (turning of connectors, ...) would
16380 * experience fancy races otherwise.
16382 intel_irq_uninstall(dev_priv);
16385 * Due to the hpd irq storm handling the hotplug work can re-arm the
16386 * poll handlers. Hence disable polling after hpd handling is shut down.
16388 drm_kms_helper_poll_fini(dev);
16390 intel_unregister_dsm_handler();
16392 intel_fbc_global_disable(dev_priv);
16394 /* flush any delayed tasks or pending work */
16395 flush_scheduled_work();
16397 drm_mode_config_cleanup(dev);
16399 intel_cleanup_overlay(dev_priv);
16401 intel_cleanup_gt_powersave(dev_priv);
16403 intel_teardown_gmbus(dev);
16406 void intel_connector_attach_encoder(struct intel_connector *connector,
16407 struct intel_encoder *encoder)
16409 connector->encoder = encoder;
16410 drm_mode_connector_attach_encoder(&connector->base,
16415 * set vga decode state - true == enable VGA decode
16417 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
16419 struct drm_i915_private *dev_priv = dev->dev_private;
16420 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
16423 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
16424 DRM_ERROR("failed to read control word\n");
16428 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
16432 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
16434 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
16436 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
16437 DRM_ERROR("failed to write control word\n");
16444 struct intel_display_error_state {
16446 u32 power_well_driver;
16448 int num_transcoders;
16450 struct intel_cursor_error_state {
16455 } cursor[I915_MAX_PIPES];
16457 struct intel_pipe_error_state {
16458 bool power_domain_on;
16461 } pipe[I915_MAX_PIPES];
16463 struct intel_plane_error_state {
16471 } plane[I915_MAX_PIPES];
16473 struct intel_transcoder_error_state {
16474 bool power_domain_on;
16475 enum transcoder cpu_transcoder;
16488 struct intel_display_error_state *
16489 intel_display_capture_error_state(struct drm_i915_private *dev_priv)
16491 struct intel_display_error_state *error;
16492 int transcoders[] = {
16500 if (INTEL_INFO(dev_priv)->num_pipes == 0)
16503 error = kzalloc(sizeof(*error), GFP_ATOMIC);
16507 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
16508 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
16510 for_each_pipe(dev_priv, i) {
16511 error->pipe[i].power_domain_on =
16512 __intel_display_power_is_enabled(dev_priv,
16513 POWER_DOMAIN_PIPE(i));
16514 if (!error->pipe[i].power_domain_on)
16517 error->cursor[i].control = I915_READ(CURCNTR(i));
16518 error->cursor[i].position = I915_READ(CURPOS(i));
16519 error->cursor[i].base = I915_READ(CURBASE(i));
16521 error->plane[i].control = I915_READ(DSPCNTR(i));
16522 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
16523 if (INTEL_GEN(dev_priv) <= 3) {
16524 error->plane[i].size = I915_READ(DSPSIZE(i));
16525 error->plane[i].pos = I915_READ(DSPPOS(i));
16527 if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
16528 error->plane[i].addr = I915_READ(DSPADDR(i));
16529 if (INTEL_GEN(dev_priv) >= 4) {
16530 error->plane[i].surface = I915_READ(DSPSURF(i));
16531 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
16534 error->pipe[i].source = I915_READ(PIPESRC(i));
16536 if (HAS_GMCH_DISPLAY(dev_priv))
16537 error->pipe[i].stat = I915_READ(PIPESTAT(i));
16540 /* Note: this does not include DSI transcoders. */
16541 error->num_transcoders = INTEL_INFO(dev_priv)->num_pipes;
16542 if (HAS_DDI(dev_priv))
16543 error->num_transcoders++; /* Account for eDP. */
16545 for (i = 0; i < error->num_transcoders; i++) {
16546 enum transcoder cpu_transcoder = transcoders[i];
16548 error->transcoder[i].power_domain_on =
16549 __intel_display_power_is_enabled(dev_priv,
16550 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
16551 if (!error->transcoder[i].power_domain_on)
16554 error->transcoder[i].cpu_transcoder = cpu_transcoder;
16556 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
16557 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
16558 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
16559 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
16560 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
16561 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
16562 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
16568 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
16571 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
16572 struct drm_device *dev,
16573 struct intel_display_error_state *error)
16575 struct drm_i915_private *dev_priv = dev->dev_private;
16581 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
16582 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
16583 err_printf(m, "PWR_WELL_CTL2: %08x\n",
16584 error->power_well_driver);
16585 for_each_pipe(dev_priv, i) {
16586 err_printf(m, "Pipe [%d]:\n", i);
16587 err_printf(m, " Power: %s\n",
16588 onoff(error->pipe[i].power_domain_on));
16589 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
16590 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
16592 err_printf(m, "Plane [%d]:\n", i);
16593 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
16594 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
16595 if (INTEL_INFO(dev)->gen <= 3) {
16596 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
16597 err_printf(m, " POS: %08x\n", error->plane[i].pos);
16599 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
16600 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
16601 if (INTEL_INFO(dev)->gen >= 4) {
16602 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
16603 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
16606 err_printf(m, "Cursor [%d]:\n", i);
16607 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
16608 err_printf(m, " POS: %08x\n", error->cursor[i].position);
16609 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
16612 for (i = 0; i < error->num_transcoders; i++) {
16613 err_printf(m, "CPU transcoder: %s\n",
16614 transcoder_name(error->transcoder[i].cpu_transcoder));
16615 err_printf(m, " Power: %s\n",
16616 onoff(error->transcoder[i].power_domain_on));
16617 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
16618 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
16619 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
16620 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
16621 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
16622 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
16623 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);