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_trace.h"
40 #include <drm/drm_atomic_helper.h>
41 #include <drm/drm_dp_helper.h>
42 #include <drm/drm_crtc_helper.h>
43 #include <drm/drm_plane_helper.h>
44 #include <drm/drm_rect.h>
45 #include <linux/dma_remapping.h>
47 /* Primary plane formats supported by all gen */
48 #define COMMON_PRIMARY_FORMATS \
51 DRM_FORMAT_XRGB8888, \
54 /* Primary plane formats for gen <= 3 */
55 static const uint32_t intel_primary_formats_gen2[] = {
56 COMMON_PRIMARY_FORMATS,
61 /* Primary plane formats for gen >= 4 */
62 static const uint32_t intel_primary_formats_gen4[] = {
63 COMMON_PRIMARY_FORMATS, \
66 DRM_FORMAT_XRGB2101010,
67 DRM_FORMAT_ARGB2101010,
68 DRM_FORMAT_XBGR2101010,
69 DRM_FORMAT_ABGR2101010,
73 static const uint32_t intel_cursor_formats[] = {
77 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
79 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
80 struct intel_crtc_state *pipe_config);
81 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
82 struct intel_crtc_state *pipe_config);
84 static int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
85 int x, int y, struct drm_framebuffer *old_fb);
86 static int intel_framebuffer_init(struct drm_device *dev,
87 struct intel_framebuffer *ifb,
88 struct drm_mode_fb_cmd2 *mode_cmd,
89 struct drm_i915_gem_object *obj);
90 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
91 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
92 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
93 struct intel_link_m_n *m_n,
94 struct intel_link_m_n *m2_n2);
95 static void ironlake_set_pipeconf(struct drm_crtc *crtc);
96 static void haswell_set_pipeconf(struct drm_crtc *crtc);
97 static void intel_set_pipe_csc(struct drm_crtc *crtc);
98 static void vlv_prepare_pll(struct intel_crtc *crtc,
99 const struct intel_crtc_state *pipe_config);
100 static void chv_prepare_pll(struct intel_crtc *crtc,
101 const struct intel_crtc_state *pipe_config);
102 static void intel_begin_crtc_commit(struct drm_crtc *crtc);
103 static void intel_finish_crtc_commit(struct drm_crtc *crtc);
105 static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
107 if (!connector->mst_port)
108 return connector->encoder;
110 return &connector->mst_port->mst_encoders[pipe]->base;
119 int p2_slow, p2_fast;
122 typedef struct intel_limit intel_limit_t;
124 intel_range_t dot, vco, n, m, m1, m2, p, p1;
129 intel_pch_rawclk(struct drm_device *dev)
131 struct drm_i915_private *dev_priv = dev->dev_private;
133 WARN_ON(!HAS_PCH_SPLIT(dev));
135 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
138 static inline u32 /* units of 100MHz */
139 intel_fdi_link_freq(struct drm_device *dev)
142 struct drm_i915_private *dev_priv = dev->dev_private;
143 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
148 static const intel_limit_t intel_limits_i8xx_dac = {
149 .dot = { .min = 25000, .max = 350000 },
150 .vco = { .min = 908000, .max = 1512000 },
151 .n = { .min = 2, .max = 16 },
152 .m = { .min = 96, .max = 140 },
153 .m1 = { .min = 18, .max = 26 },
154 .m2 = { .min = 6, .max = 16 },
155 .p = { .min = 4, .max = 128 },
156 .p1 = { .min = 2, .max = 33 },
157 .p2 = { .dot_limit = 165000,
158 .p2_slow = 4, .p2_fast = 2 },
161 static const intel_limit_t intel_limits_i8xx_dvo = {
162 .dot = { .min = 25000, .max = 350000 },
163 .vco = { .min = 908000, .max = 1512000 },
164 .n = { .min = 2, .max = 16 },
165 .m = { .min = 96, .max = 140 },
166 .m1 = { .min = 18, .max = 26 },
167 .m2 = { .min = 6, .max = 16 },
168 .p = { .min = 4, .max = 128 },
169 .p1 = { .min = 2, .max = 33 },
170 .p2 = { .dot_limit = 165000,
171 .p2_slow = 4, .p2_fast = 4 },
174 static const intel_limit_t intel_limits_i8xx_lvds = {
175 .dot = { .min = 25000, .max = 350000 },
176 .vco = { .min = 908000, .max = 1512000 },
177 .n = { .min = 2, .max = 16 },
178 .m = { .min = 96, .max = 140 },
179 .m1 = { .min = 18, .max = 26 },
180 .m2 = { .min = 6, .max = 16 },
181 .p = { .min = 4, .max = 128 },
182 .p1 = { .min = 1, .max = 6 },
183 .p2 = { .dot_limit = 165000,
184 .p2_slow = 14, .p2_fast = 7 },
187 static const intel_limit_t intel_limits_i9xx_sdvo = {
188 .dot = { .min = 20000, .max = 400000 },
189 .vco = { .min = 1400000, .max = 2800000 },
190 .n = { .min = 1, .max = 6 },
191 .m = { .min = 70, .max = 120 },
192 .m1 = { .min = 8, .max = 18 },
193 .m2 = { .min = 3, .max = 7 },
194 .p = { .min = 5, .max = 80 },
195 .p1 = { .min = 1, .max = 8 },
196 .p2 = { .dot_limit = 200000,
197 .p2_slow = 10, .p2_fast = 5 },
200 static const intel_limit_t intel_limits_i9xx_lvds = {
201 .dot = { .min = 20000, .max = 400000 },
202 .vco = { .min = 1400000, .max = 2800000 },
203 .n = { .min = 1, .max = 6 },
204 .m = { .min = 70, .max = 120 },
205 .m1 = { .min = 8, .max = 18 },
206 .m2 = { .min = 3, .max = 7 },
207 .p = { .min = 7, .max = 98 },
208 .p1 = { .min = 1, .max = 8 },
209 .p2 = { .dot_limit = 112000,
210 .p2_slow = 14, .p2_fast = 7 },
214 static const intel_limit_t intel_limits_g4x_sdvo = {
215 .dot = { .min = 25000, .max = 270000 },
216 .vco = { .min = 1750000, .max = 3500000},
217 .n = { .min = 1, .max = 4 },
218 .m = { .min = 104, .max = 138 },
219 .m1 = { .min = 17, .max = 23 },
220 .m2 = { .min = 5, .max = 11 },
221 .p = { .min = 10, .max = 30 },
222 .p1 = { .min = 1, .max = 3},
223 .p2 = { .dot_limit = 270000,
229 static const intel_limit_t intel_limits_g4x_hdmi = {
230 .dot = { .min = 22000, .max = 400000 },
231 .vco = { .min = 1750000, .max = 3500000},
232 .n = { .min = 1, .max = 4 },
233 .m = { .min = 104, .max = 138 },
234 .m1 = { .min = 16, .max = 23 },
235 .m2 = { .min = 5, .max = 11 },
236 .p = { .min = 5, .max = 80 },
237 .p1 = { .min = 1, .max = 8},
238 .p2 = { .dot_limit = 165000,
239 .p2_slow = 10, .p2_fast = 5 },
242 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
243 .dot = { .min = 20000, .max = 115000 },
244 .vco = { .min = 1750000, .max = 3500000 },
245 .n = { .min = 1, .max = 3 },
246 .m = { .min = 104, .max = 138 },
247 .m1 = { .min = 17, .max = 23 },
248 .m2 = { .min = 5, .max = 11 },
249 .p = { .min = 28, .max = 112 },
250 .p1 = { .min = 2, .max = 8 },
251 .p2 = { .dot_limit = 0,
252 .p2_slow = 14, .p2_fast = 14
256 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
257 .dot = { .min = 80000, .max = 224000 },
258 .vco = { .min = 1750000, .max = 3500000 },
259 .n = { .min = 1, .max = 3 },
260 .m = { .min = 104, .max = 138 },
261 .m1 = { .min = 17, .max = 23 },
262 .m2 = { .min = 5, .max = 11 },
263 .p = { .min = 14, .max = 42 },
264 .p1 = { .min = 2, .max = 6 },
265 .p2 = { .dot_limit = 0,
266 .p2_slow = 7, .p2_fast = 7
270 static const intel_limit_t intel_limits_pineview_sdvo = {
271 .dot = { .min = 20000, .max = 400000},
272 .vco = { .min = 1700000, .max = 3500000 },
273 /* Pineview's Ncounter is a ring counter */
274 .n = { .min = 3, .max = 6 },
275 .m = { .min = 2, .max = 256 },
276 /* Pineview only has one combined m divider, which we treat as m2. */
277 .m1 = { .min = 0, .max = 0 },
278 .m2 = { .min = 0, .max = 254 },
279 .p = { .min = 5, .max = 80 },
280 .p1 = { .min = 1, .max = 8 },
281 .p2 = { .dot_limit = 200000,
282 .p2_slow = 10, .p2_fast = 5 },
285 static const intel_limit_t intel_limits_pineview_lvds = {
286 .dot = { .min = 20000, .max = 400000 },
287 .vco = { .min = 1700000, .max = 3500000 },
288 .n = { .min = 3, .max = 6 },
289 .m = { .min = 2, .max = 256 },
290 .m1 = { .min = 0, .max = 0 },
291 .m2 = { .min = 0, .max = 254 },
292 .p = { .min = 7, .max = 112 },
293 .p1 = { .min = 1, .max = 8 },
294 .p2 = { .dot_limit = 112000,
295 .p2_slow = 14, .p2_fast = 14 },
298 /* Ironlake / Sandybridge
300 * We calculate clock using (register_value + 2) for N/M1/M2, so here
301 * the range value for them is (actual_value - 2).
303 static const intel_limit_t intel_limits_ironlake_dac = {
304 .dot = { .min = 25000, .max = 350000 },
305 .vco = { .min = 1760000, .max = 3510000 },
306 .n = { .min = 1, .max = 5 },
307 .m = { .min = 79, .max = 127 },
308 .m1 = { .min = 12, .max = 22 },
309 .m2 = { .min = 5, .max = 9 },
310 .p = { .min = 5, .max = 80 },
311 .p1 = { .min = 1, .max = 8 },
312 .p2 = { .dot_limit = 225000,
313 .p2_slow = 10, .p2_fast = 5 },
316 static const intel_limit_t intel_limits_ironlake_single_lvds = {
317 .dot = { .min = 25000, .max = 350000 },
318 .vco = { .min = 1760000, .max = 3510000 },
319 .n = { .min = 1, .max = 3 },
320 .m = { .min = 79, .max = 118 },
321 .m1 = { .min = 12, .max = 22 },
322 .m2 = { .min = 5, .max = 9 },
323 .p = { .min = 28, .max = 112 },
324 .p1 = { .min = 2, .max = 8 },
325 .p2 = { .dot_limit = 225000,
326 .p2_slow = 14, .p2_fast = 14 },
329 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
330 .dot = { .min = 25000, .max = 350000 },
331 .vco = { .min = 1760000, .max = 3510000 },
332 .n = { .min = 1, .max = 3 },
333 .m = { .min = 79, .max = 127 },
334 .m1 = { .min = 12, .max = 22 },
335 .m2 = { .min = 5, .max = 9 },
336 .p = { .min = 14, .max = 56 },
337 .p1 = { .min = 2, .max = 8 },
338 .p2 = { .dot_limit = 225000,
339 .p2_slow = 7, .p2_fast = 7 },
342 /* LVDS 100mhz refclk limits. */
343 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
344 .dot = { .min = 25000, .max = 350000 },
345 .vco = { .min = 1760000, .max = 3510000 },
346 .n = { .min = 1, .max = 2 },
347 .m = { .min = 79, .max = 126 },
348 .m1 = { .min = 12, .max = 22 },
349 .m2 = { .min = 5, .max = 9 },
350 .p = { .min = 28, .max = 112 },
351 .p1 = { .min = 2, .max = 8 },
352 .p2 = { .dot_limit = 225000,
353 .p2_slow = 14, .p2_fast = 14 },
356 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
357 .dot = { .min = 25000, .max = 350000 },
358 .vco = { .min = 1760000, .max = 3510000 },
359 .n = { .min = 1, .max = 3 },
360 .m = { .min = 79, .max = 126 },
361 .m1 = { .min = 12, .max = 22 },
362 .m2 = { .min = 5, .max = 9 },
363 .p = { .min = 14, .max = 42 },
364 .p1 = { .min = 2, .max = 6 },
365 .p2 = { .dot_limit = 225000,
366 .p2_slow = 7, .p2_fast = 7 },
369 static const intel_limit_t intel_limits_vlv = {
371 * These are the data rate limits (measured in fast clocks)
372 * since those are the strictest limits we have. The fast
373 * clock and actual rate limits are more relaxed, so checking
374 * them would make no difference.
376 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
377 .vco = { .min = 4000000, .max = 6000000 },
378 .n = { .min = 1, .max = 7 },
379 .m1 = { .min = 2, .max = 3 },
380 .m2 = { .min = 11, .max = 156 },
381 .p1 = { .min = 2, .max = 3 },
382 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
385 static const intel_limit_t intel_limits_chv = {
387 * These are the data rate limits (measured in fast clocks)
388 * since those are the strictest limits we have. The fast
389 * clock and actual rate limits are more relaxed, so checking
390 * them would make no difference.
392 .dot = { .min = 25000 * 5, .max = 540000 * 5},
393 .vco = { .min = 4860000, .max = 6480000 },
394 .n = { .min = 1, .max = 1 },
395 .m1 = { .min = 2, .max = 2 },
396 .m2 = { .min = 24 << 22, .max = 175 << 22 },
397 .p1 = { .min = 2, .max = 4 },
398 .p2 = { .p2_slow = 1, .p2_fast = 14 },
401 static void vlv_clock(int refclk, intel_clock_t *clock)
403 clock->m = clock->m1 * clock->m2;
404 clock->p = clock->p1 * clock->p2;
405 if (WARN_ON(clock->n == 0 || clock->p == 0))
407 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
408 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
412 * Returns whether any output on the specified pipe is of the specified type
414 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
416 struct drm_device *dev = crtc->base.dev;
417 struct intel_encoder *encoder;
419 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
420 if (encoder->type == type)
427 * Returns whether any output on the specified pipe will have the specified
428 * type after a staged modeset is complete, i.e., the same as
429 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
432 static bool intel_pipe_will_have_type(struct intel_crtc *crtc, int type)
434 struct drm_device *dev = crtc->base.dev;
435 struct intel_encoder *encoder;
437 for_each_intel_encoder(dev, encoder)
438 if (encoder->new_crtc == crtc && encoder->type == type)
444 static const intel_limit_t *intel_ironlake_limit(struct intel_crtc *crtc,
447 struct drm_device *dev = crtc->base.dev;
448 const intel_limit_t *limit;
450 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
451 if (intel_is_dual_link_lvds(dev)) {
452 if (refclk == 100000)
453 limit = &intel_limits_ironlake_dual_lvds_100m;
455 limit = &intel_limits_ironlake_dual_lvds;
457 if (refclk == 100000)
458 limit = &intel_limits_ironlake_single_lvds_100m;
460 limit = &intel_limits_ironlake_single_lvds;
463 limit = &intel_limits_ironlake_dac;
468 static const intel_limit_t *intel_g4x_limit(struct intel_crtc *crtc)
470 struct drm_device *dev = crtc->base.dev;
471 const intel_limit_t *limit;
473 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
474 if (intel_is_dual_link_lvds(dev))
475 limit = &intel_limits_g4x_dual_channel_lvds;
477 limit = &intel_limits_g4x_single_channel_lvds;
478 } else if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_HDMI) ||
479 intel_pipe_will_have_type(crtc, INTEL_OUTPUT_ANALOG)) {
480 limit = &intel_limits_g4x_hdmi;
481 } else if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_SDVO)) {
482 limit = &intel_limits_g4x_sdvo;
483 } else /* The option is for other outputs */
484 limit = &intel_limits_i9xx_sdvo;
489 static const intel_limit_t *intel_limit(struct intel_crtc *crtc, int refclk)
491 struct drm_device *dev = crtc->base.dev;
492 const intel_limit_t *limit;
494 if (HAS_PCH_SPLIT(dev))
495 limit = intel_ironlake_limit(crtc, refclk);
496 else if (IS_G4X(dev)) {
497 limit = intel_g4x_limit(crtc);
498 } else if (IS_PINEVIEW(dev)) {
499 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS))
500 limit = &intel_limits_pineview_lvds;
502 limit = &intel_limits_pineview_sdvo;
503 } else if (IS_CHERRYVIEW(dev)) {
504 limit = &intel_limits_chv;
505 } else if (IS_VALLEYVIEW(dev)) {
506 limit = &intel_limits_vlv;
507 } else if (!IS_GEN2(dev)) {
508 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS))
509 limit = &intel_limits_i9xx_lvds;
511 limit = &intel_limits_i9xx_sdvo;
513 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS))
514 limit = &intel_limits_i8xx_lvds;
515 else if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_DVO))
516 limit = &intel_limits_i8xx_dvo;
518 limit = &intel_limits_i8xx_dac;
523 /* m1 is reserved as 0 in Pineview, n is a ring counter */
524 static void pineview_clock(int refclk, intel_clock_t *clock)
526 clock->m = clock->m2 + 2;
527 clock->p = clock->p1 * clock->p2;
528 if (WARN_ON(clock->n == 0 || clock->p == 0))
530 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
531 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
534 static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
536 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
539 static void i9xx_clock(int refclk, intel_clock_t *clock)
541 clock->m = i9xx_dpll_compute_m(clock);
542 clock->p = clock->p1 * clock->p2;
543 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
545 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
546 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
549 static void chv_clock(int refclk, intel_clock_t *clock)
551 clock->m = clock->m1 * clock->m2;
552 clock->p = clock->p1 * clock->p2;
553 if (WARN_ON(clock->n == 0 || clock->p == 0))
555 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
557 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
560 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
562 * Returns whether the given set of divisors are valid for a given refclk with
563 * the given connectors.
566 static bool intel_PLL_is_valid(struct drm_device *dev,
567 const intel_limit_t *limit,
568 const intel_clock_t *clock)
570 if (clock->n < limit->n.min || limit->n.max < clock->n)
571 INTELPllInvalid("n out of range\n");
572 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
573 INTELPllInvalid("p1 out of range\n");
574 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
575 INTELPllInvalid("m2 out of range\n");
576 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
577 INTELPllInvalid("m1 out of range\n");
579 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev))
580 if (clock->m1 <= clock->m2)
581 INTELPllInvalid("m1 <= m2\n");
583 if (!IS_VALLEYVIEW(dev)) {
584 if (clock->p < limit->p.min || limit->p.max < clock->p)
585 INTELPllInvalid("p out of range\n");
586 if (clock->m < limit->m.min || limit->m.max < clock->m)
587 INTELPllInvalid("m out of range\n");
590 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
591 INTELPllInvalid("vco out of range\n");
592 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
593 * connector, etc., rather than just a single range.
595 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
596 INTELPllInvalid("dot out of range\n");
602 i9xx_find_best_dpll(const intel_limit_t *limit, struct intel_crtc *crtc,
603 int target, int refclk, intel_clock_t *match_clock,
604 intel_clock_t *best_clock)
606 struct drm_device *dev = crtc->base.dev;
610 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
612 * For LVDS just rely on its current settings for dual-channel.
613 * We haven't figured out how to reliably set up different
614 * single/dual channel state, if we even can.
616 if (intel_is_dual_link_lvds(dev))
617 clock.p2 = limit->p2.p2_fast;
619 clock.p2 = limit->p2.p2_slow;
621 if (target < limit->p2.dot_limit)
622 clock.p2 = limit->p2.p2_slow;
624 clock.p2 = limit->p2.p2_fast;
627 memset(best_clock, 0, sizeof(*best_clock));
629 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
631 for (clock.m2 = limit->m2.min;
632 clock.m2 <= limit->m2.max; clock.m2++) {
633 if (clock.m2 >= clock.m1)
635 for (clock.n = limit->n.min;
636 clock.n <= limit->n.max; clock.n++) {
637 for (clock.p1 = limit->p1.min;
638 clock.p1 <= limit->p1.max; clock.p1++) {
641 i9xx_clock(refclk, &clock);
642 if (!intel_PLL_is_valid(dev, limit,
646 clock.p != match_clock->p)
649 this_err = abs(clock.dot - target);
650 if (this_err < err) {
659 return (err != target);
663 pnv_find_best_dpll(const intel_limit_t *limit, struct intel_crtc *crtc,
664 int target, int refclk, intel_clock_t *match_clock,
665 intel_clock_t *best_clock)
667 struct drm_device *dev = crtc->base.dev;
671 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
673 * For LVDS just rely on its current settings for dual-channel.
674 * We haven't figured out how to reliably set up different
675 * single/dual channel state, if we even can.
677 if (intel_is_dual_link_lvds(dev))
678 clock.p2 = limit->p2.p2_fast;
680 clock.p2 = limit->p2.p2_slow;
682 if (target < limit->p2.dot_limit)
683 clock.p2 = limit->p2.p2_slow;
685 clock.p2 = limit->p2.p2_fast;
688 memset(best_clock, 0, sizeof(*best_clock));
690 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
692 for (clock.m2 = limit->m2.min;
693 clock.m2 <= limit->m2.max; clock.m2++) {
694 for (clock.n = limit->n.min;
695 clock.n <= limit->n.max; clock.n++) {
696 for (clock.p1 = limit->p1.min;
697 clock.p1 <= limit->p1.max; clock.p1++) {
700 pineview_clock(refclk, &clock);
701 if (!intel_PLL_is_valid(dev, limit,
705 clock.p != match_clock->p)
708 this_err = abs(clock.dot - target);
709 if (this_err < err) {
718 return (err != target);
722 g4x_find_best_dpll(const intel_limit_t *limit, struct intel_crtc *crtc,
723 int target, int refclk, intel_clock_t *match_clock,
724 intel_clock_t *best_clock)
726 struct drm_device *dev = crtc->base.dev;
730 /* approximately equals target * 0.00585 */
731 int err_most = (target >> 8) + (target >> 9);
734 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
735 if (intel_is_dual_link_lvds(dev))
736 clock.p2 = limit->p2.p2_fast;
738 clock.p2 = limit->p2.p2_slow;
740 if (target < limit->p2.dot_limit)
741 clock.p2 = limit->p2.p2_slow;
743 clock.p2 = limit->p2.p2_fast;
746 memset(best_clock, 0, sizeof(*best_clock));
747 max_n = limit->n.max;
748 /* based on hardware requirement, prefer smaller n to precision */
749 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
750 /* based on hardware requirement, prefere larger m1,m2 */
751 for (clock.m1 = limit->m1.max;
752 clock.m1 >= limit->m1.min; clock.m1--) {
753 for (clock.m2 = limit->m2.max;
754 clock.m2 >= limit->m2.min; clock.m2--) {
755 for (clock.p1 = limit->p1.max;
756 clock.p1 >= limit->p1.min; clock.p1--) {
759 i9xx_clock(refclk, &clock);
760 if (!intel_PLL_is_valid(dev, limit,
764 this_err = abs(clock.dot - target);
765 if (this_err < err_most) {
779 vlv_find_best_dpll(const intel_limit_t *limit, struct intel_crtc *crtc,
780 int target, int refclk, intel_clock_t *match_clock,
781 intel_clock_t *best_clock)
783 struct drm_device *dev = crtc->base.dev;
785 unsigned int bestppm = 1000000;
786 /* min update 19.2 MHz */
787 int max_n = min(limit->n.max, refclk / 19200);
790 target *= 5; /* fast clock */
792 memset(best_clock, 0, sizeof(*best_clock));
794 /* based on hardware requirement, prefer smaller n to precision */
795 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
796 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
797 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
798 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
799 clock.p = clock.p1 * clock.p2;
800 /* based on hardware requirement, prefer bigger m1,m2 values */
801 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
802 unsigned int ppm, diff;
804 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
807 vlv_clock(refclk, &clock);
809 if (!intel_PLL_is_valid(dev, limit,
813 diff = abs(clock.dot - target);
814 ppm = div_u64(1000000ULL * diff, target);
816 if (ppm < 100 && clock.p > best_clock->p) {
822 if (bestppm >= 10 && ppm < bestppm - 10) {
836 chv_find_best_dpll(const intel_limit_t *limit, struct intel_crtc *crtc,
837 int target, int refclk, intel_clock_t *match_clock,
838 intel_clock_t *best_clock)
840 struct drm_device *dev = crtc->base.dev;
845 memset(best_clock, 0, sizeof(*best_clock));
848 * Based on hardware doc, the n always set to 1, and m1 always
849 * set to 2. If requires to support 200Mhz refclk, we need to
850 * revisit this because n may not 1 anymore.
852 clock.n = 1, clock.m1 = 2;
853 target *= 5; /* fast clock */
855 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
856 for (clock.p2 = limit->p2.p2_fast;
857 clock.p2 >= limit->p2.p2_slow;
858 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
860 clock.p = clock.p1 * clock.p2;
862 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
863 clock.n) << 22, refclk * clock.m1);
865 if (m2 > INT_MAX/clock.m1)
870 chv_clock(refclk, &clock);
872 if (!intel_PLL_is_valid(dev, limit, &clock))
875 /* based on hardware requirement, prefer bigger p
877 if (clock.p > best_clock->p) {
887 bool intel_crtc_active(struct drm_crtc *crtc)
889 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
891 /* Be paranoid as we can arrive here with only partial
892 * state retrieved from the hardware during setup.
894 * We can ditch the adjusted_mode.crtc_clock check as soon
895 * as Haswell has gained clock readout/fastboot support.
897 * We can ditch the crtc->primary->fb check as soon as we can
898 * properly reconstruct framebuffers.
900 return intel_crtc->active && crtc->primary->fb &&
901 intel_crtc->config->base.adjusted_mode.crtc_clock;
904 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
907 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
908 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
910 return intel_crtc->config->cpu_transcoder;
913 static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
915 struct drm_i915_private *dev_priv = dev->dev_private;
916 u32 reg = PIPEDSL(pipe);
921 line_mask = DSL_LINEMASK_GEN2;
923 line_mask = DSL_LINEMASK_GEN3;
925 line1 = I915_READ(reg) & line_mask;
927 line2 = I915_READ(reg) & line_mask;
929 return line1 == line2;
933 * intel_wait_for_pipe_off - wait for pipe to turn off
934 * @crtc: crtc whose pipe to wait for
936 * After disabling a pipe, we can't wait for vblank in the usual way,
937 * spinning on the vblank interrupt status bit, since we won't actually
938 * see an interrupt when the pipe is disabled.
941 * wait for the pipe register state bit to turn off
944 * wait for the display line value to settle (it usually
945 * ends up stopping at the start of the next frame).
948 static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
950 struct drm_device *dev = crtc->base.dev;
951 struct drm_i915_private *dev_priv = dev->dev_private;
952 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
953 enum pipe pipe = crtc->pipe;
955 if (INTEL_INFO(dev)->gen >= 4) {
956 int reg = PIPECONF(cpu_transcoder);
958 /* Wait for the Pipe State to go off */
959 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
961 WARN(1, "pipe_off wait timed out\n");
963 /* Wait for the display line to settle */
964 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
965 WARN(1, "pipe_off wait timed out\n");
970 * ibx_digital_port_connected - is the specified port connected?
971 * @dev_priv: i915 private structure
972 * @port: the port to test
974 * Returns true if @port is connected, false otherwise.
976 bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
977 struct intel_digital_port *port)
981 if (HAS_PCH_IBX(dev_priv->dev)) {
982 switch (port->port) {
984 bit = SDE_PORTB_HOTPLUG;
987 bit = SDE_PORTC_HOTPLUG;
990 bit = SDE_PORTD_HOTPLUG;
996 switch (port->port) {
998 bit = SDE_PORTB_HOTPLUG_CPT;
1001 bit = SDE_PORTC_HOTPLUG_CPT;
1004 bit = SDE_PORTD_HOTPLUG_CPT;
1011 return I915_READ(SDEISR) & bit;
1014 static const char *state_string(bool enabled)
1016 return enabled ? "on" : "off";
1019 /* Only for pre-ILK configs */
1020 void assert_pll(struct drm_i915_private *dev_priv,
1021 enum pipe pipe, bool state)
1028 val = I915_READ(reg);
1029 cur_state = !!(val & DPLL_VCO_ENABLE);
1030 I915_STATE_WARN(cur_state != state,
1031 "PLL state assertion failure (expected %s, current %s)\n",
1032 state_string(state), state_string(cur_state));
1035 /* XXX: the dsi pll is shared between MIPI DSI ports */
1036 static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1041 mutex_lock(&dev_priv->dpio_lock);
1042 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1043 mutex_unlock(&dev_priv->dpio_lock);
1045 cur_state = val & DSI_PLL_VCO_EN;
1046 I915_STATE_WARN(cur_state != state,
1047 "DSI PLL state assertion failure (expected %s, current %s)\n",
1048 state_string(state), state_string(cur_state));
1050 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1051 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1053 struct intel_shared_dpll *
1054 intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
1056 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
1058 if (crtc->config->shared_dpll < 0)
1061 return &dev_priv->shared_dplls[crtc->config->shared_dpll];
1065 void assert_shared_dpll(struct drm_i915_private *dev_priv,
1066 struct intel_shared_dpll *pll,
1070 struct intel_dpll_hw_state hw_state;
1073 "asserting DPLL %s with no DPLL\n", state_string(state)))
1076 cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
1077 I915_STATE_WARN(cur_state != state,
1078 "%s assertion failure (expected %s, current %s)\n",
1079 pll->name, state_string(state), state_string(cur_state));
1082 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1083 enum pipe pipe, bool state)
1088 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1091 if (HAS_DDI(dev_priv->dev)) {
1092 /* DDI does not have a specific FDI_TX register */
1093 reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1094 val = I915_READ(reg);
1095 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1097 reg = FDI_TX_CTL(pipe);
1098 val = I915_READ(reg);
1099 cur_state = !!(val & FDI_TX_ENABLE);
1101 I915_STATE_WARN(cur_state != state,
1102 "FDI TX state assertion failure (expected %s, current %s)\n",
1103 state_string(state), state_string(cur_state));
1105 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1106 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1108 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1109 enum pipe pipe, bool state)
1115 reg = FDI_RX_CTL(pipe);
1116 val = I915_READ(reg);
1117 cur_state = !!(val & FDI_RX_ENABLE);
1118 I915_STATE_WARN(cur_state != state,
1119 "FDI RX state assertion failure (expected %s, current %s)\n",
1120 state_string(state), state_string(cur_state));
1122 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1123 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1125 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1131 /* ILK FDI PLL is always enabled */
1132 if (INTEL_INFO(dev_priv->dev)->gen == 5)
1135 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1136 if (HAS_DDI(dev_priv->dev))
1139 reg = FDI_TX_CTL(pipe);
1140 val = I915_READ(reg);
1141 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1144 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1145 enum pipe pipe, bool state)
1151 reg = FDI_RX_CTL(pipe);
1152 val = I915_READ(reg);
1153 cur_state = !!(val & FDI_RX_PLL_ENABLE);
1154 I915_STATE_WARN(cur_state != state,
1155 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1156 state_string(state), state_string(cur_state));
1159 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1162 struct drm_device *dev = dev_priv->dev;
1165 enum pipe panel_pipe = PIPE_A;
1168 if (WARN_ON(HAS_DDI(dev)))
1171 if (HAS_PCH_SPLIT(dev)) {
1174 pp_reg = PCH_PP_CONTROL;
1175 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1177 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1178 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1179 panel_pipe = PIPE_B;
1180 /* XXX: else fix for eDP */
1181 } else if (IS_VALLEYVIEW(dev)) {
1182 /* presumably write lock depends on pipe, not port select */
1183 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1186 pp_reg = PP_CONTROL;
1187 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1188 panel_pipe = PIPE_B;
1191 val = I915_READ(pp_reg);
1192 if (!(val & PANEL_POWER_ON) ||
1193 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1196 I915_STATE_WARN(panel_pipe == pipe && locked,
1197 "panel assertion failure, pipe %c regs locked\n",
1201 static void assert_cursor(struct drm_i915_private *dev_priv,
1202 enum pipe pipe, bool state)
1204 struct drm_device *dev = dev_priv->dev;
1207 if (IS_845G(dev) || IS_I865G(dev))
1208 cur_state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
1210 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
1212 I915_STATE_WARN(cur_state != state,
1213 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1214 pipe_name(pipe), state_string(state), state_string(cur_state));
1216 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1217 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1219 void assert_pipe(struct drm_i915_private *dev_priv,
1220 enum pipe pipe, bool state)
1225 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1228 /* if we need the pipe quirk it must be always on */
1229 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1230 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1233 if (!intel_display_power_is_enabled(dev_priv,
1234 POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
1237 reg = PIPECONF(cpu_transcoder);
1238 val = I915_READ(reg);
1239 cur_state = !!(val & PIPECONF_ENABLE);
1242 I915_STATE_WARN(cur_state != state,
1243 "pipe %c assertion failure (expected %s, current %s)\n",
1244 pipe_name(pipe), state_string(state), state_string(cur_state));
1247 static void assert_plane(struct drm_i915_private *dev_priv,
1248 enum plane plane, bool state)
1254 reg = DSPCNTR(plane);
1255 val = I915_READ(reg);
1256 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1257 I915_STATE_WARN(cur_state != state,
1258 "plane %c assertion failure (expected %s, current %s)\n",
1259 plane_name(plane), state_string(state), state_string(cur_state));
1262 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1263 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1265 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1268 struct drm_device *dev = dev_priv->dev;
1273 /* Primary planes are fixed to pipes on gen4+ */
1274 if (INTEL_INFO(dev)->gen >= 4) {
1275 reg = DSPCNTR(pipe);
1276 val = I915_READ(reg);
1277 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
1278 "plane %c assertion failure, should be disabled but not\n",
1283 /* Need to check both planes against the pipe */
1284 for_each_pipe(dev_priv, i) {
1286 val = I915_READ(reg);
1287 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1288 DISPPLANE_SEL_PIPE_SHIFT;
1289 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1290 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1291 plane_name(i), pipe_name(pipe));
1295 static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1298 struct drm_device *dev = dev_priv->dev;
1302 if (INTEL_INFO(dev)->gen >= 9) {
1303 for_each_sprite(pipe, sprite) {
1304 val = I915_READ(PLANE_CTL(pipe, sprite));
1305 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
1306 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1307 sprite, pipe_name(pipe));
1309 } else if (IS_VALLEYVIEW(dev)) {
1310 for_each_sprite(pipe, sprite) {
1311 reg = SPCNTR(pipe, sprite);
1312 val = I915_READ(reg);
1313 I915_STATE_WARN(val & SP_ENABLE,
1314 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1315 sprite_name(pipe, sprite), pipe_name(pipe));
1317 } else if (INTEL_INFO(dev)->gen >= 7) {
1319 val = I915_READ(reg);
1320 I915_STATE_WARN(val & SPRITE_ENABLE,
1321 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1322 plane_name(pipe), pipe_name(pipe));
1323 } else if (INTEL_INFO(dev)->gen >= 5) {
1324 reg = DVSCNTR(pipe);
1325 val = I915_READ(reg);
1326 I915_STATE_WARN(val & DVS_ENABLE,
1327 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1328 plane_name(pipe), pipe_name(pipe));
1332 static void assert_vblank_disabled(struct drm_crtc *crtc)
1334 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1335 drm_crtc_vblank_put(crtc);
1338 static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1343 I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
1345 val = I915_READ(PCH_DREF_CONTROL);
1346 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1347 DREF_SUPERSPREAD_SOURCE_MASK));
1348 I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1351 static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1358 reg = PCH_TRANSCONF(pipe);
1359 val = I915_READ(reg);
1360 enabled = !!(val & TRANS_ENABLE);
1361 I915_STATE_WARN(enabled,
1362 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1366 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1367 enum pipe pipe, u32 port_sel, u32 val)
1369 if ((val & DP_PORT_EN) == 0)
1372 if (HAS_PCH_CPT(dev_priv->dev)) {
1373 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1374 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1375 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1377 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1378 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1381 if ((val & DP_PIPE_MASK) != (pipe << 30))
1387 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1388 enum pipe pipe, u32 val)
1390 if ((val & SDVO_ENABLE) == 0)
1393 if (HAS_PCH_CPT(dev_priv->dev)) {
1394 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1396 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1397 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1400 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1406 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1407 enum pipe pipe, u32 val)
1409 if ((val & LVDS_PORT_EN) == 0)
1412 if (HAS_PCH_CPT(dev_priv->dev)) {
1413 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1416 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1422 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1423 enum pipe pipe, u32 val)
1425 if ((val & ADPA_DAC_ENABLE) == 0)
1427 if (HAS_PCH_CPT(dev_priv->dev)) {
1428 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1431 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1437 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1438 enum pipe pipe, int reg, u32 port_sel)
1440 u32 val = I915_READ(reg);
1441 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1442 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1443 reg, pipe_name(pipe));
1445 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
1446 && (val & DP_PIPEB_SELECT),
1447 "IBX PCH dp port still using transcoder B\n");
1450 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1451 enum pipe pipe, int reg)
1453 u32 val = I915_READ(reg);
1454 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1455 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1456 reg, pipe_name(pipe));
1458 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
1459 && (val & SDVO_PIPE_B_SELECT),
1460 "IBX PCH hdmi port still using transcoder B\n");
1463 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1469 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1470 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1471 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1474 val = I915_READ(reg);
1475 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1476 "PCH VGA enabled on transcoder %c, should be disabled\n",
1480 val = I915_READ(reg);
1481 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1482 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1485 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1486 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1487 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
1490 static void intel_init_dpio(struct drm_device *dev)
1492 struct drm_i915_private *dev_priv = dev->dev_private;
1494 if (!IS_VALLEYVIEW(dev))
1498 * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
1499 * CHV x1 PHY (DP/HDMI D)
1500 * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
1502 if (IS_CHERRYVIEW(dev)) {
1503 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
1504 DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
1506 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
1510 static void vlv_enable_pll(struct intel_crtc *crtc,
1511 const struct intel_crtc_state *pipe_config)
1513 struct drm_device *dev = crtc->base.dev;
1514 struct drm_i915_private *dev_priv = dev->dev_private;
1515 int reg = DPLL(crtc->pipe);
1516 u32 dpll = pipe_config->dpll_hw_state.dpll;
1518 assert_pipe_disabled(dev_priv, crtc->pipe);
1520 /* No really, not for ILK+ */
1521 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
1523 /* PLL is protected by panel, make sure we can write it */
1524 if (IS_MOBILE(dev_priv->dev))
1525 assert_panel_unlocked(dev_priv, crtc->pipe);
1527 I915_WRITE(reg, dpll);
1531 if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1532 DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
1534 I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
1535 POSTING_READ(DPLL_MD(crtc->pipe));
1537 /* We do this three times for luck */
1538 I915_WRITE(reg, dpll);
1540 udelay(150); /* wait for warmup */
1541 I915_WRITE(reg, dpll);
1543 udelay(150); /* wait for warmup */
1544 I915_WRITE(reg, dpll);
1546 udelay(150); /* wait for warmup */
1549 static void chv_enable_pll(struct intel_crtc *crtc,
1550 const struct intel_crtc_state *pipe_config)
1552 struct drm_device *dev = crtc->base.dev;
1553 struct drm_i915_private *dev_priv = dev->dev_private;
1554 int pipe = crtc->pipe;
1555 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1558 assert_pipe_disabled(dev_priv, crtc->pipe);
1560 BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
1562 mutex_lock(&dev_priv->dpio_lock);
1564 /* Enable back the 10bit clock to display controller */
1565 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1566 tmp |= DPIO_DCLKP_EN;
1567 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1570 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1575 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1577 /* Check PLL is locked */
1578 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1579 DRM_ERROR("PLL %d failed to lock\n", pipe);
1581 /* not sure when this should be written */
1582 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1583 POSTING_READ(DPLL_MD(pipe));
1585 mutex_unlock(&dev_priv->dpio_lock);
1588 static int intel_num_dvo_pipes(struct drm_device *dev)
1590 struct intel_crtc *crtc;
1593 for_each_intel_crtc(dev, crtc)
1594 count += crtc->active &&
1595 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1600 static void i9xx_enable_pll(struct intel_crtc *crtc)
1602 struct drm_device *dev = crtc->base.dev;
1603 struct drm_i915_private *dev_priv = dev->dev_private;
1604 int reg = DPLL(crtc->pipe);
1605 u32 dpll = crtc->config->dpll_hw_state.dpll;
1607 assert_pipe_disabled(dev_priv, crtc->pipe);
1609 /* No really, not for ILK+ */
1610 BUG_ON(INTEL_INFO(dev)->gen >= 5);
1612 /* PLL is protected by panel, make sure we can write it */
1613 if (IS_MOBILE(dev) && !IS_I830(dev))
1614 assert_panel_unlocked(dev_priv, crtc->pipe);
1616 /* Enable DVO 2x clock on both PLLs if necessary */
1617 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1619 * It appears to be important that we don't enable this
1620 * for the current pipe before otherwise configuring the
1621 * PLL. No idea how this should be handled if multiple
1622 * DVO outputs are enabled simultaneosly.
1624 dpll |= DPLL_DVO_2X_MODE;
1625 I915_WRITE(DPLL(!crtc->pipe),
1626 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1629 /* Wait for the clocks to stabilize. */
1633 if (INTEL_INFO(dev)->gen >= 4) {
1634 I915_WRITE(DPLL_MD(crtc->pipe),
1635 crtc->config->dpll_hw_state.dpll_md);
1637 /* The pixel multiplier can only be updated once the
1638 * DPLL is enabled and the clocks are stable.
1640 * So write it again.
1642 I915_WRITE(reg, dpll);
1645 /* We do this three times for luck */
1646 I915_WRITE(reg, dpll);
1648 udelay(150); /* wait for warmup */
1649 I915_WRITE(reg, dpll);
1651 udelay(150); /* wait for warmup */
1652 I915_WRITE(reg, dpll);
1654 udelay(150); /* wait for warmup */
1658 * i9xx_disable_pll - disable a PLL
1659 * @dev_priv: i915 private structure
1660 * @pipe: pipe PLL to disable
1662 * Disable the PLL for @pipe, making sure the pipe is off first.
1664 * Note! This is for pre-ILK only.
1666 static void i9xx_disable_pll(struct intel_crtc *crtc)
1668 struct drm_device *dev = crtc->base.dev;
1669 struct drm_i915_private *dev_priv = dev->dev_private;
1670 enum pipe pipe = crtc->pipe;
1672 /* Disable DVO 2x clock on both PLLs if necessary */
1674 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1675 intel_num_dvo_pipes(dev) == 1) {
1676 I915_WRITE(DPLL(PIPE_B),
1677 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1678 I915_WRITE(DPLL(PIPE_A),
1679 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1682 /* Don't disable pipe or pipe PLLs if needed */
1683 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1684 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1687 /* Make sure the pipe isn't still relying on us */
1688 assert_pipe_disabled(dev_priv, pipe);
1690 I915_WRITE(DPLL(pipe), 0);
1691 POSTING_READ(DPLL(pipe));
1694 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1698 /* Make sure the pipe isn't still relying on us */
1699 assert_pipe_disabled(dev_priv, pipe);
1702 * Leave integrated clock source and reference clock enabled for pipe B.
1703 * The latter is needed for VGA hotplug / manual detection.
1706 val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REFA_CLK_ENABLE_VLV;
1707 I915_WRITE(DPLL(pipe), val);
1708 POSTING_READ(DPLL(pipe));
1712 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1714 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1717 /* Make sure the pipe isn't still relying on us */
1718 assert_pipe_disabled(dev_priv, pipe);
1720 /* Set PLL en = 0 */
1721 val = DPLL_SSC_REF_CLOCK_CHV | DPLL_REFA_CLK_ENABLE_VLV;
1723 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1724 I915_WRITE(DPLL(pipe), val);
1725 POSTING_READ(DPLL(pipe));
1727 mutex_lock(&dev_priv->dpio_lock);
1729 /* Disable 10bit clock to display controller */
1730 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1731 val &= ~DPIO_DCLKP_EN;
1732 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1734 /* disable left/right clock distribution */
1735 if (pipe != PIPE_B) {
1736 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1737 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1738 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1740 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1741 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1742 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1745 mutex_unlock(&dev_priv->dpio_lock);
1748 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1749 struct intel_digital_port *dport)
1754 switch (dport->port) {
1756 port_mask = DPLL_PORTB_READY_MASK;
1760 port_mask = DPLL_PORTC_READY_MASK;
1764 port_mask = DPLL_PORTD_READY_MASK;
1765 dpll_reg = DPIO_PHY_STATUS;
1771 if (wait_for((I915_READ(dpll_reg) & port_mask) == 0, 1000))
1772 WARN(1, "timed out waiting for port %c ready: 0x%08x\n",
1773 port_name(dport->port), I915_READ(dpll_reg));
1776 static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
1778 struct drm_device *dev = crtc->base.dev;
1779 struct drm_i915_private *dev_priv = dev->dev_private;
1780 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1782 if (WARN_ON(pll == NULL))
1785 WARN_ON(!pll->config.crtc_mask);
1786 if (pll->active == 0) {
1787 DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
1789 assert_shared_dpll_disabled(dev_priv, pll);
1791 pll->mode_set(dev_priv, pll);
1796 * intel_enable_shared_dpll - enable PCH PLL
1797 * @dev_priv: i915 private structure
1798 * @pipe: pipe PLL to enable
1800 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1801 * drives the transcoder clock.
1803 static void intel_enable_shared_dpll(struct intel_crtc *crtc)
1805 struct drm_device *dev = crtc->base.dev;
1806 struct drm_i915_private *dev_priv = dev->dev_private;
1807 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1809 if (WARN_ON(pll == NULL))
1812 if (WARN_ON(pll->config.crtc_mask == 0))
1815 DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
1816 pll->name, pll->active, pll->on,
1817 crtc->base.base.id);
1819 if (pll->active++) {
1821 assert_shared_dpll_enabled(dev_priv, pll);
1826 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
1828 DRM_DEBUG_KMS("enabling %s\n", pll->name);
1829 pll->enable(dev_priv, pll);
1833 static void intel_disable_shared_dpll(struct intel_crtc *crtc)
1835 struct drm_device *dev = crtc->base.dev;
1836 struct drm_i915_private *dev_priv = dev->dev_private;
1837 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1839 /* PCH only available on ILK+ */
1840 BUG_ON(INTEL_INFO(dev)->gen < 5);
1841 if (WARN_ON(pll == NULL))
1844 if (WARN_ON(pll->config.crtc_mask == 0))
1847 DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
1848 pll->name, pll->active, pll->on,
1849 crtc->base.base.id);
1851 if (WARN_ON(pll->active == 0)) {
1852 assert_shared_dpll_disabled(dev_priv, pll);
1856 assert_shared_dpll_enabled(dev_priv, pll);
1861 DRM_DEBUG_KMS("disabling %s\n", pll->name);
1862 pll->disable(dev_priv, pll);
1865 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
1868 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1871 struct drm_device *dev = dev_priv->dev;
1872 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1873 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1874 uint32_t reg, val, pipeconf_val;
1876 /* PCH only available on ILK+ */
1877 BUG_ON(!HAS_PCH_SPLIT(dev));
1879 /* Make sure PCH DPLL is enabled */
1880 assert_shared_dpll_enabled(dev_priv,
1881 intel_crtc_to_shared_dpll(intel_crtc));
1883 /* FDI must be feeding us bits for PCH ports */
1884 assert_fdi_tx_enabled(dev_priv, pipe);
1885 assert_fdi_rx_enabled(dev_priv, pipe);
1887 if (HAS_PCH_CPT(dev)) {
1888 /* Workaround: Set the timing override bit before enabling the
1889 * pch transcoder. */
1890 reg = TRANS_CHICKEN2(pipe);
1891 val = I915_READ(reg);
1892 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1893 I915_WRITE(reg, val);
1896 reg = PCH_TRANSCONF(pipe);
1897 val = I915_READ(reg);
1898 pipeconf_val = I915_READ(PIPECONF(pipe));
1900 if (HAS_PCH_IBX(dev_priv->dev)) {
1902 * make the BPC in transcoder be consistent with
1903 * that in pipeconf reg.
1905 val &= ~PIPECONF_BPC_MASK;
1906 val |= pipeconf_val & PIPECONF_BPC_MASK;
1909 val &= ~TRANS_INTERLACE_MASK;
1910 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1911 if (HAS_PCH_IBX(dev_priv->dev) &&
1912 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
1913 val |= TRANS_LEGACY_INTERLACED_ILK;
1915 val |= TRANS_INTERLACED;
1917 val |= TRANS_PROGRESSIVE;
1919 I915_WRITE(reg, val | TRANS_ENABLE);
1920 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1921 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
1924 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1925 enum transcoder cpu_transcoder)
1927 u32 val, pipeconf_val;
1929 /* PCH only available on ILK+ */
1930 BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
1932 /* FDI must be feeding us bits for PCH ports */
1933 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
1934 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
1936 /* Workaround: set timing override bit. */
1937 val = I915_READ(_TRANSA_CHICKEN2);
1938 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1939 I915_WRITE(_TRANSA_CHICKEN2, val);
1942 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
1944 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
1945 PIPECONF_INTERLACED_ILK)
1946 val |= TRANS_INTERLACED;
1948 val |= TRANS_PROGRESSIVE;
1950 I915_WRITE(LPT_TRANSCONF, val);
1951 if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
1952 DRM_ERROR("Failed to enable PCH transcoder\n");
1955 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
1958 struct drm_device *dev = dev_priv->dev;
1961 /* FDI relies on the transcoder */
1962 assert_fdi_tx_disabled(dev_priv, pipe);
1963 assert_fdi_rx_disabled(dev_priv, pipe);
1965 /* Ports must be off as well */
1966 assert_pch_ports_disabled(dev_priv, pipe);
1968 reg = PCH_TRANSCONF(pipe);
1969 val = I915_READ(reg);
1970 val &= ~TRANS_ENABLE;
1971 I915_WRITE(reg, val);
1972 /* wait for PCH transcoder off, transcoder state */
1973 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1974 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
1976 if (!HAS_PCH_IBX(dev)) {
1977 /* Workaround: Clear the timing override chicken bit again. */
1978 reg = TRANS_CHICKEN2(pipe);
1979 val = I915_READ(reg);
1980 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1981 I915_WRITE(reg, val);
1985 static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
1989 val = I915_READ(LPT_TRANSCONF);
1990 val &= ~TRANS_ENABLE;
1991 I915_WRITE(LPT_TRANSCONF, val);
1992 /* wait for PCH transcoder off, transcoder state */
1993 if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
1994 DRM_ERROR("Failed to disable PCH transcoder\n");
1996 /* Workaround: clear timing override bit. */
1997 val = I915_READ(_TRANSA_CHICKEN2);
1998 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1999 I915_WRITE(_TRANSA_CHICKEN2, val);
2003 * intel_enable_pipe - enable a pipe, asserting requirements
2004 * @crtc: crtc responsible for the pipe
2006 * Enable @crtc's pipe, making sure that various hardware specific requirements
2007 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
2009 static void intel_enable_pipe(struct intel_crtc *crtc)
2011 struct drm_device *dev = crtc->base.dev;
2012 struct drm_i915_private *dev_priv = dev->dev_private;
2013 enum pipe pipe = crtc->pipe;
2014 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
2016 enum pipe pch_transcoder;
2020 assert_planes_disabled(dev_priv, pipe);
2021 assert_cursor_disabled(dev_priv, pipe);
2022 assert_sprites_disabled(dev_priv, pipe);
2024 if (HAS_PCH_LPT(dev_priv->dev))
2025 pch_transcoder = TRANSCODER_A;
2027 pch_transcoder = pipe;
2030 * A pipe without a PLL won't actually be able to drive bits from
2031 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2034 if (!HAS_PCH_SPLIT(dev_priv->dev))
2035 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
2036 assert_dsi_pll_enabled(dev_priv);
2038 assert_pll_enabled(dev_priv, pipe);
2040 if (crtc->config->has_pch_encoder) {
2041 /* if driving the PCH, we need FDI enabled */
2042 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
2043 assert_fdi_tx_pll_enabled(dev_priv,
2044 (enum pipe) cpu_transcoder);
2046 /* FIXME: assert CPU port conditions for SNB+ */
2049 reg = PIPECONF(cpu_transcoder);
2050 val = I915_READ(reg);
2051 if (val & PIPECONF_ENABLE) {
2052 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2053 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
2057 I915_WRITE(reg, val | PIPECONF_ENABLE);
2062 * intel_disable_pipe - disable a pipe, asserting requirements
2063 * @crtc: crtc whose pipes is to be disabled
2065 * Disable the pipe of @crtc, making sure that various hardware
2066 * specific requirements are met, if applicable, e.g. plane
2067 * disabled, panel fitter off, etc.
2069 * Will wait until the pipe has shut down before returning.
2071 static void intel_disable_pipe(struct intel_crtc *crtc)
2073 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
2074 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
2075 enum pipe pipe = crtc->pipe;
2080 * Make sure planes won't keep trying to pump pixels to us,
2081 * or we might hang the display.
2083 assert_planes_disabled(dev_priv, pipe);
2084 assert_cursor_disabled(dev_priv, pipe);
2085 assert_sprites_disabled(dev_priv, pipe);
2087 reg = PIPECONF(cpu_transcoder);
2088 val = I915_READ(reg);
2089 if ((val & PIPECONF_ENABLE) == 0)
2093 * Double wide has implications for planes
2094 * so best keep it disabled when not needed.
2096 if (crtc->config->double_wide)
2097 val &= ~PIPECONF_DOUBLE_WIDE;
2099 /* Don't disable pipe or pipe PLLs if needed */
2100 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2101 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
2102 val &= ~PIPECONF_ENABLE;
2104 I915_WRITE(reg, val);
2105 if ((val & PIPECONF_ENABLE) == 0)
2106 intel_wait_for_pipe_off(crtc);
2110 * Plane regs are double buffered, going from enabled->disabled needs a
2111 * trigger in order to latch. The display address reg provides this.
2113 void intel_flush_primary_plane(struct drm_i915_private *dev_priv,
2116 struct drm_device *dev = dev_priv->dev;
2117 u32 reg = INTEL_INFO(dev)->gen >= 4 ? DSPSURF(plane) : DSPADDR(plane);
2119 I915_WRITE(reg, I915_READ(reg));
2124 * intel_enable_primary_hw_plane - enable the primary plane on a given pipe
2125 * @plane: plane to be enabled
2126 * @crtc: crtc for the plane
2128 * Enable @plane on @crtc, making sure that the pipe is running first.
2130 static void intel_enable_primary_hw_plane(struct drm_plane *plane,
2131 struct drm_crtc *crtc)
2133 struct drm_device *dev = plane->dev;
2134 struct drm_i915_private *dev_priv = dev->dev_private;
2135 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2137 /* If the pipe isn't enabled, we can't pump pixels and may hang */
2138 assert_pipe_enabled(dev_priv, intel_crtc->pipe);
2140 if (intel_crtc->primary_enabled)
2143 intel_crtc->primary_enabled = true;
2145 dev_priv->display.update_primary_plane(crtc, plane->fb,
2149 * BDW signals flip done immediately if the plane
2150 * is disabled, even if the plane enable is already
2151 * armed to occur at the next vblank :(
2153 if (IS_BROADWELL(dev))
2154 intel_wait_for_vblank(dev, intel_crtc->pipe);
2158 * intel_disable_primary_hw_plane - disable the primary hardware plane
2159 * @plane: plane to be disabled
2160 * @crtc: crtc for the plane
2162 * Disable @plane on @crtc, making sure that the pipe is running first.
2164 static void intel_disable_primary_hw_plane(struct drm_plane *plane,
2165 struct drm_crtc *crtc)
2167 struct drm_device *dev = plane->dev;
2168 struct drm_i915_private *dev_priv = dev->dev_private;
2169 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2171 if (WARN_ON(!intel_crtc->active))
2174 if (!intel_crtc->primary_enabled)
2177 intel_crtc->primary_enabled = false;
2179 dev_priv->display.update_primary_plane(crtc, plane->fb,
2183 static bool need_vtd_wa(struct drm_device *dev)
2185 #ifdef CONFIG_INTEL_IOMMU
2186 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2193 intel_fb_align_height(struct drm_device *dev, int height,
2194 uint32_t pixel_format,
2195 uint64_t fb_format_modifier)
2198 uint32_t bits_per_pixel;
2200 switch (fb_format_modifier) {
2201 case DRM_FORMAT_MOD_NONE:
2204 case I915_FORMAT_MOD_X_TILED:
2205 tile_height = IS_GEN2(dev) ? 16 : 8;
2207 case I915_FORMAT_MOD_Y_TILED:
2210 case I915_FORMAT_MOD_Yf_TILED:
2211 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2212 switch (bits_per_pixel) {
2226 "128-bit pixels are not supported for display!");
2232 MISSING_CASE(fb_format_modifier);
2237 return ALIGN(height, tile_height);
2241 intel_pin_and_fence_fb_obj(struct drm_plane *plane,
2242 struct drm_framebuffer *fb,
2243 struct intel_engine_cs *pipelined)
2245 struct drm_device *dev = fb->dev;
2246 struct drm_i915_private *dev_priv = dev->dev_private;
2247 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2251 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2253 switch (fb->modifier[0]) {
2254 case DRM_FORMAT_MOD_NONE:
2255 if (INTEL_INFO(dev)->gen >= 9)
2256 alignment = 256 * 1024;
2257 else if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
2258 alignment = 128 * 1024;
2259 else if (INTEL_INFO(dev)->gen >= 4)
2260 alignment = 4 * 1024;
2262 alignment = 64 * 1024;
2264 case I915_FORMAT_MOD_X_TILED:
2265 if (INTEL_INFO(dev)->gen >= 9)
2266 alignment = 256 * 1024;
2268 /* pin() will align the object as required by fence */
2272 case I915_FORMAT_MOD_Y_TILED:
2273 case I915_FORMAT_MOD_Yf_TILED:
2274 if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
2275 "Y tiling bo slipped through, driver bug!\n"))
2277 alignment = 1 * 1024 * 1024;
2280 MISSING_CASE(fb->modifier[0]);
2284 /* Note that the w/a also requires 64 PTE of padding following the
2285 * bo. We currently fill all unused PTE with the shadow page and so
2286 * we should always have valid PTE following the scanout preventing
2289 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2290 alignment = 256 * 1024;
2293 * Global gtt pte registers are special registers which actually forward
2294 * writes to a chunk of system memory. Which means that there is no risk
2295 * that the register values disappear as soon as we call
2296 * intel_runtime_pm_put(), so it is correct to wrap only the
2297 * pin/unpin/fence and not more.
2299 intel_runtime_pm_get(dev_priv);
2301 dev_priv->mm.interruptible = false;
2302 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
2304 goto err_interruptible;
2306 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2307 * fence, whereas 965+ only requires a fence if using
2308 * framebuffer compression. For simplicity, we always install
2309 * a fence as the cost is not that onerous.
2311 ret = i915_gem_object_get_fence(obj);
2315 i915_gem_object_pin_fence(obj);
2317 dev_priv->mm.interruptible = true;
2318 intel_runtime_pm_put(dev_priv);
2322 i915_gem_object_unpin_from_display_plane(obj);
2324 dev_priv->mm.interruptible = true;
2325 intel_runtime_pm_put(dev_priv);
2329 static void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
2331 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2333 i915_gem_object_unpin_fence(obj);
2334 i915_gem_object_unpin_from_display_plane(obj);
2337 /* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
2338 * is assumed to be a power-of-two. */
2339 unsigned long intel_gen4_compute_page_offset(int *x, int *y,
2340 unsigned int tiling_mode,
2344 if (tiling_mode != I915_TILING_NONE) {
2345 unsigned int tile_rows, tiles;
2350 tiles = *x / (512/cpp);
2353 return tile_rows * pitch * 8 + tiles * 4096;
2355 unsigned int offset;
2357 offset = *y * pitch + *x * cpp;
2359 *x = (offset & 4095) / cpp;
2360 return offset & -4096;
2364 static int i9xx_format_to_fourcc(int format)
2367 case DISPPLANE_8BPP:
2368 return DRM_FORMAT_C8;
2369 case DISPPLANE_BGRX555:
2370 return DRM_FORMAT_XRGB1555;
2371 case DISPPLANE_BGRX565:
2372 return DRM_FORMAT_RGB565;
2374 case DISPPLANE_BGRX888:
2375 return DRM_FORMAT_XRGB8888;
2376 case DISPPLANE_RGBX888:
2377 return DRM_FORMAT_XBGR8888;
2378 case DISPPLANE_BGRX101010:
2379 return DRM_FORMAT_XRGB2101010;
2380 case DISPPLANE_RGBX101010:
2381 return DRM_FORMAT_XBGR2101010;
2385 static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2388 case PLANE_CTL_FORMAT_RGB_565:
2389 return DRM_FORMAT_RGB565;
2391 case PLANE_CTL_FORMAT_XRGB_8888:
2394 return DRM_FORMAT_ABGR8888;
2396 return DRM_FORMAT_XBGR8888;
2399 return DRM_FORMAT_ARGB8888;
2401 return DRM_FORMAT_XRGB8888;
2403 case PLANE_CTL_FORMAT_XRGB_2101010:
2405 return DRM_FORMAT_XBGR2101010;
2407 return DRM_FORMAT_XRGB2101010;
2412 intel_alloc_plane_obj(struct intel_crtc *crtc,
2413 struct intel_initial_plane_config *plane_config)
2415 struct drm_device *dev = crtc->base.dev;
2416 struct drm_i915_gem_object *obj = NULL;
2417 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2418 struct drm_framebuffer *fb = &plane_config->fb->base;
2419 u32 base = plane_config->base;
2421 if (plane_config->size == 0)
2424 obj = i915_gem_object_create_stolen_for_preallocated(dev, base, base,
2425 plane_config->size);
2429 obj->tiling_mode = plane_config->tiling;
2430 if (obj->tiling_mode == I915_TILING_X)
2431 obj->stride = fb->pitches[0];
2433 mode_cmd.pixel_format = fb->pixel_format;
2434 mode_cmd.width = fb->width;
2435 mode_cmd.height = fb->height;
2436 mode_cmd.pitches[0] = fb->pitches[0];
2437 mode_cmd.modifier[0] = fb->modifier[0];
2438 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2440 mutex_lock(&dev->struct_mutex);
2442 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
2444 DRM_DEBUG_KMS("intel fb init failed\n");
2448 obj->frontbuffer_bits = INTEL_FRONTBUFFER_PRIMARY(crtc->pipe);
2449 mutex_unlock(&dev->struct_mutex);
2451 DRM_DEBUG_KMS("plane fb obj %p\n", obj);
2455 drm_gem_object_unreference(&obj->base);
2456 mutex_unlock(&dev->struct_mutex);
2460 /* Update plane->state->fb to match plane->fb after driver-internal updates */
2462 update_state_fb(struct drm_plane *plane)
2464 if (plane->fb == plane->state->fb)
2467 if (plane->state->fb)
2468 drm_framebuffer_unreference(plane->state->fb);
2469 plane->state->fb = plane->fb;
2470 if (plane->state->fb)
2471 drm_framebuffer_reference(plane->state->fb);
2475 intel_find_plane_obj(struct intel_crtc *intel_crtc,
2476 struct intel_initial_plane_config *plane_config)
2478 struct drm_device *dev = intel_crtc->base.dev;
2479 struct drm_i915_private *dev_priv = dev->dev_private;
2481 struct intel_crtc *i;
2482 struct drm_i915_gem_object *obj;
2484 if (!plane_config->fb)
2487 if (intel_alloc_plane_obj(intel_crtc, plane_config)) {
2488 struct drm_plane *primary = intel_crtc->base.primary;
2490 primary->fb = &plane_config->fb->base;
2491 primary->state->crtc = &intel_crtc->base;
2492 update_state_fb(primary);
2497 kfree(plane_config->fb);
2500 * Failed to alloc the obj, check to see if we should share
2501 * an fb with another CRTC instead
2503 for_each_crtc(dev, c) {
2504 i = to_intel_crtc(c);
2506 if (c == &intel_crtc->base)
2512 obj = intel_fb_obj(c->primary->fb);
2516 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
2517 struct drm_plane *primary = intel_crtc->base.primary;
2519 if (obj->tiling_mode != I915_TILING_NONE)
2520 dev_priv->preserve_bios_swizzle = true;
2522 drm_framebuffer_reference(c->primary->fb);
2523 primary->fb = c->primary->fb;
2524 primary->state->crtc = &intel_crtc->base;
2525 update_state_fb(intel_crtc->base.primary);
2526 obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
2533 static void i9xx_update_primary_plane(struct drm_crtc *crtc,
2534 struct drm_framebuffer *fb,
2537 struct drm_device *dev = crtc->dev;
2538 struct drm_i915_private *dev_priv = dev->dev_private;
2539 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2540 struct drm_i915_gem_object *obj;
2541 int plane = intel_crtc->plane;
2542 unsigned long linear_offset;
2544 u32 reg = DSPCNTR(plane);
2547 if (!intel_crtc->primary_enabled) {
2549 if (INTEL_INFO(dev)->gen >= 4)
2550 I915_WRITE(DSPSURF(plane), 0);
2552 I915_WRITE(DSPADDR(plane), 0);
2557 obj = intel_fb_obj(fb);
2558 if (WARN_ON(obj == NULL))
2561 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2563 dspcntr = DISPPLANE_GAMMA_ENABLE;
2565 dspcntr |= DISPLAY_PLANE_ENABLE;
2567 if (INTEL_INFO(dev)->gen < 4) {
2568 if (intel_crtc->pipe == PIPE_B)
2569 dspcntr |= DISPPLANE_SEL_PIPE_B;
2571 /* pipesrc and dspsize control the size that is scaled from,
2572 * which should always be the user's requested size.
2574 I915_WRITE(DSPSIZE(plane),
2575 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2576 (intel_crtc->config->pipe_src_w - 1));
2577 I915_WRITE(DSPPOS(plane), 0);
2578 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2579 I915_WRITE(PRIMSIZE(plane),
2580 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2581 (intel_crtc->config->pipe_src_w - 1));
2582 I915_WRITE(PRIMPOS(plane), 0);
2583 I915_WRITE(PRIMCNSTALPHA(plane), 0);
2586 switch (fb->pixel_format) {
2588 dspcntr |= DISPPLANE_8BPP;
2590 case DRM_FORMAT_XRGB1555:
2591 case DRM_FORMAT_ARGB1555:
2592 dspcntr |= DISPPLANE_BGRX555;
2594 case DRM_FORMAT_RGB565:
2595 dspcntr |= DISPPLANE_BGRX565;
2597 case DRM_FORMAT_XRGB8888:
2598 case DRM_FORMAT_ARGB8888:
2599 dspcntr |= DISPPLANE_BGRX888;
2601 case DRM_FORMAT_XBGR8888:
2602 case DRM_FORMAT_ABGR8888:
2603 dspcntr |= DISPPLANE_RGBX888;
2605 case DRM_FORMAT_XRGB2101010:
2606 case DRM_FORMAT_ARGB2101010:
2607 dspcntr |= DISPPLANE_BGRX101010;
2609 case DRM_FORMAT_XBGR2101010:
2610 case DRM_FORMAT_ABGR2101010:
2611 dspcntr |= DISPPLANE_RGBX101010;
2617 if (INTEL_INFO(dev)->gen >= 4 &&
2618 obj->tiling_mode != I915_TILING_NONE)
2619 dspcntr |= DISPPLANE_TILED;
2622 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2624 linear_offset = y * fb->pitches[0] + x * pixel_size;
2626 if (INTEL_INFO(dev)->gen >= 4) {
2627 intel_crtc->dspaddr_offset =
2628 intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
2631 linear_offset -= intel_crtc->dspaddr_offset;
2633 intel_crtc->dspaddr_offset = linear_offset;
2636 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2637 dspcntr |= DISPPLANE_ROTATE_180;
2639 x += (intel_crtc->config->pipe_src_w - 1);
2640 y += (intel_crtc->config->pipe_src_h - 1);
2642 /* Finding the last pixel of the last line of the display
2643 data and adding to linear_offset*/
2645 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2646 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2649 I915_WRITE(reg, dspcntr);
2651 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2652 i915_gem_obj_ggtt_offset(obj), linear_offset, x, y,
2654 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2655 if (INTEL_INFO(dev)->gen >= 4) {
2656 I915_WRITE(DSPSURF(plane),
2657 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2658 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2659 I915_WRITE(DSPLINOFF(plane), linear_offset);
2661 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
2665 static void ironlake_update_primary_plane(struct drm_crtc *crtc,
2666 struct drm_framebuffer *fb,
2669 struct drm_device *dev = crtc->dev;
2670 struct drm_i915_private *dev_priv = dev->dev_private;
2671 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2672 struct drm_i915_gem_object *obj;
2673 int plane = intel_crtc->plane;
2674 unsigned long linear_offset;
2676 u32 reg = DSPCNTR(plane);
2679 if (!intel_crtc->primary_enabled) {
2681 I915_WRITE(DSPSURF(plane), 0);
2686 obj = intel_fb_obj(fb);
2687 if (WARN_ON(obj == NULL))
2690 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2692 dspcntr = DISPPLANE_GAMMA_ENABLE;
2694 dspcntr |= DISPLAY_PLANE_ENABLE;
2696 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2697 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
2699 switch (fb->pixel_format) {
2701 dspcntr |= DISPPLANE_8BPP;
2703 case DRM_FORMAT_RGB565:
2704 dspcntr |= DISPPLANE_BGRX565;
2706 case DRM_FORMAT_XRGB8888:
2707 case DRM_FORMAT_ARGB8888:
2708 dspcntr |= DISPPLANE_BGRX888;
2710 case DRM_FORMAT_XBGR8888:
2711 case DRM_FORMAT_ABGR8888:
2712 dspcntr |= DISPPLANE_RGBX888;
2714 case DRM_FORMAT_XRGB2101010:
2715 case DRM_FORMAT_ARGB2101010:
2716 dspcntr |= DISPPLANE_BGRX101010;
2718 case DRM_FORMAT_XBGR2101010:
2719 case DRM_FORMAT_ABGR2101010:
2720 dspcntr |= DISPPLANE_RGBX101010;
2726 if (obj->tiling_mode != I915_TILING_NONE)
2727 dspcntr |= DISPPLANE_TILED;
2729 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
2730 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2732 linear_offset = y * fb->pitches[0] + x * pixel_size;
2733 intel_crtc->dspaddr_offset =
2734 intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
2737 linear_offset -= intel_crtc->dspaddr_offset;
2738 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2739 dspcntr |= DISPPLANE_ROTATE_180;
2741 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
2742 x += (intel_crtc->config->pipe_src_w - 1);
2743 y += (intel_crtc->config->pipe_src_h - 1);
2745 /* Finding the last pixel of the last line of the display
2746 data and adding to linear_offset*/
2748 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2749 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2753 I915_WRITE(reg, dspcntr);
2755 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2756 i915_gem_obj_ggtt_offset(obj), linear_offset, x, y,
2758 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2759 I915_WRITE(DSPSURF(plane),
2760 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2761 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2762 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2764 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2765 I915_WRITE(DSPLINOFF(plane), linear_offset);
2770 u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
2771 uint32_t pixel_format)
2773 u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2776 * The stride is either expressed as a multiple of 64 bytes
2777 * chunks for linear buffers or in number of tiles for tiled
2780 switch (fb_modifier) {
2781 case DRM_FORMAT_MOD_NONE:
2783 case I915_FORMAT_MOD_X_TILED:
2784 if (INTEL_INFO(dev)->gen == 2)
2787 case I915_FORMAT_MOD_Y_TILED:
2788 /* No need to check for old gens and Y tiling since this is
2789 * about the display engine and those will be blocked before
2793 case I915_FORMAT_MOD_Yf_TILED:
2794 if (bits_per_pixel == 8)
2799 MISSING_CASE(fb_modifier);
2804 static void skylake_update_primary_plane(struct drm_crtc *crtc,
2805 struct drm_framebuffer *fb,
2808 struct drm_device *dev = crtc->dev;
2809 struct drm_i915_private *dev_priv = dev->dev_private;
2810 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2811 struct drm_i915_gem_object *obj;
2812 int pipe = intel_crtc->pipe;
2813 u32 plane_ctl, stride_div;
2815 if (!intel_crtc->primary_enabled) {
2816 I915_WRITE(PLANE_CTL(pipe, 0), 0);
2817 I915_WRITE(PLANE_SURF(pipe, 0), 0);
2818 POSTING_READ(PLANE_CTL(pipe, 0));
2822 plane_ctl = PLANE_CTL_ENABLE |
2823 PLANE_CTL_PIPE_GAMMA_ENABLE |
2824 PLANE_CTL_PIPE_CSC_ENABLE;
2826 switch (fb->pixel_format) {
2827 case DRM_FORMAT_RGB565:
2828 plane_ctl |= PLANE_CTL_FORMAT_RGB_565;
2830 case DRM_FORMAT_XRGB8888:
2831 plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
2833 case DRM_FORMAT_XBGR8888:
2834 plane_ctl |= PLANE_CTL_ORDER_RGBX;
2835 plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
2837 case DRM_FORMAT_XRGB2101010:
2838 plane_ctl |= PLANE_CTL_FORMAT_XRGB_2101010;
2840 case DRM_FORMAT_XBGR2101010:
2841 plane_ctl |= PLANE_CTL_ORDER_RGBX;
2842 plane_ctl |= PLANE_CTL_FORMAT_XRGB_2101010;
2848 switch (fb->modifier[0]) {
2849 case DRM_FORMAT_MOD_NONE:
2851 case I915_FORMAT_MOD_X_TILED:
2852 plane_ctl |= PLANE_CTL_TILED_X;
2854 case I915_FORMAT_MOD_Y_TILED:
2855 plane_ctl |= PLANE_CTL_TILED_Y;
2857 case I915_FORMAT_MOD_Yf_TILED:
2858 plane_ctl |= PLANE_CTL_TILED_YF;
2861 MISSING_CASE(fb->modifier[0]);
2864 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
2865 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180))
2866 plane_ctl |= PLANE_CTL_ROTATE_180;
2868 obj = intel_fb_obj(fb);
2869 stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
2872 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
2874 DRM_DEBUG_KMS("Writing base %08lX %d,%d,%d,%d pitch=%d\n",
2875 i915_gem_obj_ggtt_offset(obj),
2876 x, y, fb->width, fb->height,
2879 I915_WRITE(PLANE_POS(pipe, 0), 0);
2880 I915_WRITE(PLANE_OFFSET(pipe, 0), (y << 16) | x);
2881 I915_WRITE(PLANE_SIZE(pipe, 0),
2882 (intel_crtc->config->pipe_src_h - 1) << 16 |
2883 (intel_crtc->config->pipe_src_w - 1));
2884 I915_WRITE(PLANE_STRIDE(pipe, 0), fb->pitches[0] / stride_div);
2885 I915_WRITE(PLANE_SURF(pipe, 0), i915_gem_obj_ggtt_offset(obj));
2887 POSTING_READ(PLANE_SURF(pipe, 0));
2890 /* Assume fb object is pinned & idle & fenced and just update base pointers */
2892 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2893 int x, int y, enum mode_set_atomic state)
2895 struct drm_device *dev = crtc->dev;
2896 struct drm_i915_private *dev_priv = dev->dev_private;
2898 if (dev_priv->display.disable_fbc)
2899 dev_priv->display.disable_fbc(dev);
2901 dev_priv->display.update_primary_plane(crtc, fb, x, y);
2906 static void intel_complete_page_flips(struct drm_device *dev)
2908 struct drm_crtc *crtc;
2910 for_each_crtc(dev, crtc) {
2911 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2912 enum plane plane = intel_crtc->plane;
2914 intel_prepare_page_flip(dev, plane);
2915 intel_finish_page_flip_plane(dev, plane);
2919 static void intel_update_primary_planes(struct drm_device *dev)
2921 struct drm_i915_private *dev_priv = dev->dev_private;
2922 struct drm_crtc *crtc;
2924 for_each_crtc(dev, crtc) {
2925 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2927 drm_modeset_lock(&crtc->mutex, NULL);
2929 * FIXME: Once we have proper support for primary planes (and
2930 * disabling them without disabling the entire crtc) allow again
2931 * a NULL crtc->primary->fb.
2933 if (intel_crtc->active && crtc->primary->fb)
2934 dev_priv->display.update_primary_plane(crtc,
2938 drm_modeset_unlock(&crtc->mutex);
2942 void intel_prepare_reset(struct drm_device *dev)
2944 struct drm_i915_private *dev_priv = to_i915(dev);
2945 struct intel_crtc *crtc;
2947 /* no reset support for gen2 */
2951 /* reset doesn't touch the display */
2952 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
2955 drm_modeset_lock_all(dev);
2958 * Disabling the crtcs gracefully seems nicer. Also the
2959 * g33 docs say we should at least disable all the planes.
2961 for_each_intel_crtc(dev, crtc) {
2963 dev_priv->display.crtc_disable(&crtc->base);
2967 void intel_finish_reset(struct drm_device *dev)
2969 struct drm_i915_private *dev_priv = to_i915(dev);
2972 * Flips in the rings will be nuked by the reset,
2973 * so complete all pending flips so that user space
2974 * will get its events and not get stuck.
2976 intel_complete_page_flips(dev);
2978 /* no reset support for gen2 */
2982 /* reset doesn't touch the display */
2983 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
2985 * Flips in the rings have been nuked by the reset,
2986 * so update the base address of all primary
2987 * planes to the the last fb to make sure we're
2988 * showing the correct fb after a reset.
2990 intel_update_primary_planes(dev);
2995 * The display has been reset as well,
2996 * so need a full re-initialization.
2998 intel_runtime_pm_disable_interrupts(dev_priv);
2999 intel_runtime_pm_enable_interrupts(dev_priv);
3001 intel_modeset_init_hw(dev);
3003 spin_lock_irq(&dev_priv->irq_lock);
3004 if (dev_priv->display.hpd_irq_setup)
3005 dev_priv->display.hpd_irq_setup(dev);
3006 spin_unlock_irq(&dev_priv->irq_lock);
3008 intel_modeset_setup_hw_state(dev, true);
3010 intel_hpd_init(dev_priv);
3012 drm_modeset_unlock_all(dev);
3016 intel_finish_fb(struct drm_framebuffer *old_fb)
3018 struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
3019 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
3020 bool was_interruptible = dev_priv->mm.interruptible;
3023 /* Big Hammer, we also need to ensure that any pending
3024 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
3025 * current scanout is retired before unpinning the old
3028 * This should only fail upon a hung GPU, in which case we
3029 * can safely continue.
3031 dev_priv->mm.interruptible = false;
3032 ret = i915_gem_object_finish_gpu(obj);
3033 dev_priv->mm.interruptible = was_interruptible;
3038 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3040 struct drm_device *dev = crtc->dev;
3041 struct drm_i915_private *dev_priv = dev->dev_private;
3042 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3045 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
3046 intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
3049 spin_lock_irq(&dev->event_lock);
3050 pending = to_intel_crtc(crtc)->unpin_work != NULL;
3051 spin_unlock_irq(&dev->event_lock);
3056 static void intel_update_pipe_size(struct intel_crtc *crtc)
3058 struct drm_device *dev = crtc->base.dev;
3059 struct drm_i915_private *dev_priv = dev->dev_private;
3060 const struct drm_display_mode *adjusted_mode;
3066 * Update pipe size and adjust fitter if needed: the reason for this is
3067 * that in compute_mode_changes we check the native mode (not the pfit
3068 * mode) to see if we can flip rather than do a full mode set. In the
3069 * fastboot case, we'll flip, but if we don't update the pipesrc and
3070 * pfit state, we'll end up with a big fb scanned out into the wrong
3073 * To fix this properly, we need to hoist the checks up into
3074 * compute_mode_changes (or above), check the actual pfit state and
3075 * whether the platform allows pfit disable with pipe active, and only
3076 * then update the pipesrc and pfit state, even on the flip path.
3079 adjusted_mode = &crtc->config->base.adjusted_mode;
3081 I915_WRITE(PIPESRC(crtc->pipe),
3082 ((adjusted_mode->crtc_hdisplay - 1) << 16) |
3083 (adjusted_mode->crtc_vdisplay - 1));
3084 if (!crtc->config->pch_pfit.enabled &&
3085 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
3086 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
3087 I915_WRITE(PF_CTL(crtc->pipe), 0);
3088 I915_WRITE(PF_WIN_POS(crtc->pipe), 0);
3089 I915_WRITE(PF_WIN_SZ(crtc->pipe), 0);
3091 crtc->config->pipe_src_w = adjusted_mode->crtc_hdisplay;
3092 crtc->config->pipe_src_h = adjusted_mode->crtc_vdisplay;
3095 static void intel_fdi_normal_train(struct drm_crtc *crtc)
3097 struct drm_device *dev = crtc->dev;
3098 struct drm_i915_private *dev_priv = dev->dev_private;
3099 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3100 int pipe = intel_crtc->pipe;
3103 /* enable normal train */
3104 reg = FDI_TX_CTL(pipe);
3105 temp = I915_READ(reg);
3106 if (IS_IVYBRIDGE(dev)) {
3107 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3108 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
3110 temp &= ~FDI_LINK_TRAIN_NONE;
3111 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
3113 I915_WRITE(reg, temp);
3115 reg = FDI_RX_CTL(pipe);
3116 temp = I915_READ(reg);
3117 if (HAS_PCH_CPT(dev)) {
3118 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3119 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3121 temp &= ~FDI_LINK_TRAIN_NONE;
3122 temp |= FDI_LINK_TRAIN_NONE;
3124 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3126 /* wait one idle pattern time */
3130 /* IVB wants error correction enabled */
3131 if (IS_IVYBRIDGE(dev))
3132 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3133 FDI_FE_ERRC_ENABLE);
3136 static bool pipe_has_enabled_pch(struct intel_crtc *crtc)
3138 return crtc->base.state->enable && crtc->active &&
3139 crtc->config->has_pch_encoder;
3142 static void ivb_modeset_global_resources(struct drm_device *dev)
3144 struct drm_i915_private *dev_priv = dev->dev_private;
3145 struct intel_crtc *pipe_B_crtc =
3146 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_B]);
3147 struct intel_crtc *pipe_C_crtc =
3148 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_C]);
3152 * When everything is off disable fdi C so that we could enable fdi B
3153 * with all lanes. Note that we don't care about enabled pipes without
3154 * an enabled pch encoder.
3156 if (!pipe_has_enabled_pch(pipe_B_crtc) &&
3157 !pipe_has_enabled_pch(pipe_C_crtc)) {
3158 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
3159 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
3161 temp = I915_READ(SOUTH_CHICKEN1);
3162 temp &= ~FDI_BC_BIFURCATION_SELECT;
3163 DRM_DEBUG_KMS("disabling fdi C rx\n");
3164 I915_WRITE(SOUTH_CHICKEN1, temp);
3168 /* The FDI link training functions for ILK/Ibexpeak. */
3169 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3171 struct drm_device *dev = crtc->dev;
3172 struct drm_i915_private *dev_priv = dev->dev_private;
3173 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3174 int pipe = intel_crtc->pipe;
3175 u32 reg, temp, tries;
3177 /* FDI needs bits from pipe first */
3178 assert_pipe_enabled(dev_priv, pipe);
3180 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3182 reg = FDI_RX_IMR(pipe);
3183 temp = I915_READ(reg);
3184 temp &= ~FDI_RX_SYMBOL_LOCK;
3185 temp &= ~FDI_RX_BIT_LOCK;
3186 I915_WRITE(reg, temp);
3190 /* enable CPU FDI TX and PCH FDI RX */
3191 reg = FDI_TX_CTL(pipe);
3192 temp = I915_READ(reg);
3193 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3194 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3195 temp &= ~FDI_LINK_TRAIN_NONE;
3196 temp |= FDI_LINK_TRAIN_PATTERN_1;
3197 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3199 reg = FDI_RX_CTL(pipe);
3200 temp = I915_READ(reg);
3201 temp &= ~FDI_LINK_TRAIN_NONE;
3202 temp |= FDI_LINK_TRAIN_PATTERN_1;
3203 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3208 /* Ironlake workaround, enable clock pointer after FDI enable*/
3209 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3210 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3211 FDI_RX_PHASE_SYNC_POINTER_EN);
3213 reg = FDI_RX_IIR(pipe);
3214 for (tries = 0; tries < 5; tries++) {
3215 temp = I915_READ(reg);
3216 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3218 if ((temp & FDI_RX_BIT_LOCK)) {
3219 DRM_DEBUG_KMS("FDI train 1 done.\n");
3220 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3225 DRM_ERROR("FDI train 1 fail!\n");
3228 reg = FDI_TX_CTL(pipe);
3229 temp = I915_READ(reg);
3230 temp &= ~FDI_LINK_TRAIN_NONE;
3231 temp |= FDI_LINK_TRAIN_PATTERN_2;
3232 I915_WRITE(reg, temp);
3234 reg = FDI_RX_CTL(pipe);
3235 temp = I915_READ(reg);
3236 temp &= ~FDI_LINK_TRAIN_NONE;
3237 temp |= FDI_LINK_TRAIN_PATTERN_2;
3238 I915_WRITE(reg, temp);
3243 reg = FDI_RX_IIR(pipe);
3244 for (tries = 0; tries < 5; tries++) {
3245 temp = I915_READ(reg);
3246 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3248 if (temp & FDI_RX_SYMBOL_LOCK) {
3249 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3250 DRM_DEBUG_KMS("FDI train 2 done.\n");
3255 DRM_ERROR("FDI train 2 fail!\n");
3257 DRM_DEBUG_KMS("FDI train done\n");
3261 static const int snb_b_fdi_train_param[] = {
3262 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3263 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3264 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3265 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3268 /* The FDI link training functions for SNB/Cougarpoint. */
3269 static void gen6_fdi_link_train(struct drm_crtc *crtc)
3271 struct drm_device *dev = crtc->dev;
3272 struct drm_i915_private *dev_priv = dev->dev_private;
3273 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3274 int pipe = intel_crtc->pipe;
3275 u32 reg, temp, i, retry;
3277 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3279 reg = FDI_RX_IMR(pipe);
3280 temp = I915_READ(reg);
3281 temp &= ~FDI_RX_SYMBOL_LOCK;
3282 temp &= ~FDI_RX_BIT_LOCK;
3283 I915_WRITE(reg, temp);
3288 /* enable CPU FDI TX and PCH FDI RX */
3289 reg = FDI_TX_CTL(pipe);
3290 temp = I915_READ(reg);
3291 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3292 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3293 temp &= ~FDI_LINK_TRAIN_NONE;
3294 temp |= FDI_LINK_TRAIN_PATTERN_1;
3295 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3297 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3298 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3300 I915_WRITE(FDI_RX_MISC(pipe),
3301 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3303 reg = FDI_RX_CTL(pipe);
3304 temp = I915_READ(reg);
3305 if (HAS_PCH_CPT(dev)) {
3306 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3307 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3309 temp &= ~FDI_LINK_TRAIN_NONE;
3310 temp |= FDI_LINK_TRAIN_PATTERN_1;
3312 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3317 for (i = 0; i < 4; i++) {
3318 reg = FDI_TX_CTL(pipe);
3319 temp = I915_READ(reg);
3320 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3321 temp |= snb_b_fdi_train_param[i];
3322 I915_WRITE(reg, temp);
3327 for (retry = 0; retry < 5; retry++) {
3328 reg = FDI_RX_IIR(pipe);
3329 temp = I915_READ(reg);
3330 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3331 if (temp & FDI_RX_BIT_LOCK) {
3332 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3333 DRM_DEBUG_KMS("FDI train 1 done.\n");
3342 DRM_ERROR("FDI train 1 fail!\n");
3345 reg = FDI_TX_CTL(pipe);
3346 temp = I915_READ(reg);
3347 temp &= ~FDI_LINK_TRAIN_NONE;
3348 temp |= FDI_LINK_TRAIN_PATTERN_2;
3350 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3352 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3354 I915_WRITE(reg, temp);
3356 reg = FDI_RX_CTL(pipe);
3357 temp = I915_READ(reg);
3358 if (HAS_PCH_CPT(dev)) {
3359 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3360 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3362 temp &= ~FDI_LINK_TRAIN_NONE;
3363 temp |= FDI_LINK_TRAIN_PATTERN_2;
3365 I915_WRITE(reg, temp);
3370 for (i = 0; i < 4; i++) {
3371 reg = FDI_TX_CTL(pipe);
3372 temp = I915_READ(reg);
3373 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3374 temp |= snb_b_fdi_train_param[i];
3375 I915_WRITE(reg, temp);
3380 for (retry = 0; retry < 5; retry++) {
3381 reg = FDI_RX_IIR(pipe);
3382 temp = I915_READ(reg);
3383 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3384 if (temp & FDI_RX_SYMBOL_LOCK) {
3385 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3386 DRM_DEBUG_KMS("FDI train 2 done.\n");
3395 DRM_ERROR("FDI train 2 fail!\n");
3397 DRM_DEBUG_KMS("FDI train done.\n");
3400 /* Manual link training for Ivy Bridge A0 parts */
3401 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3403 struct drm_device *dev = crtc->dev;
3404 struct drm_i915_private *dev_priv = dev->dev_private;
3405 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3406 int pipe = intel_crtc->pipe;
3407 u32 reg, temp, i, j;
3409 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3411 reg = FDI_RX_IMR(pipe);
3412 temp = I915_READ(reg);
3413 temp &= ~FDI_RX_SYMBOL_LOCK;
3414 temp &= ~FDI_RX_BIT_LOCK;
3415 I915_WRITE(reg, temp);
3420 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3421 I915_READ(FDI_RX_IIR(pipe)));
3423 /* Try each vswing and preemphasis setting twice before moving on */
3424 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3425 /* disable first in case we need to retry */
3426 reg = FDI_TX_CTL(pipe);
3427 temp = I915_READ(reg);
3428 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3429 temp &= ~FDI_TX_ENABLE;
3430 I915_WRITE(reg, temp);
3432 reg = FDI_RX_CTL(pipe);
3433 temp = I915_READ(reg);
3434 temp &= ~FDI_LINK_TRAIN_AUTO;
3435 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3436 temp &= ~FDI_RX_ENABLE;
3437 I915_WRITE(reg, temp);
3439 /* enable CPU FDI TX and PCH FDI RX */
3440 reg = FDI_TX_CTL(pipe);
3441 temp = I915_READ(reg);
3442 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3443 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3444 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
3445 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3446 temp |= snb_b_fdi_train_param[j/2];
3447 temp |= FDI_COMPOSITE_SYNC;
3448 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3450 I915_WRITE(FDI_RX_MISC(pipe),
3451 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3453 reg = FDI_RX_CTL(pipe);
3454 temp = I915_READ(reg);
3455 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3456 temp |= FDI_COMPOSITE_SYNC;
3457 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3460 udelay(1); /* should be 0.5us */
3462 for (i = 0; i < 4; i++) {
3463 reg = FDI_RX_IIR(pipe);
3464 temp = I915_READ(reg);
3465 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3467 if (temp & FDI_RX_BIT_LOCK ||
3468 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3469 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3470 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3474 udelay(1); /* should be 0.5us */
3477 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3482 reg = FDI_TX_CTL(pipe);
3483 temp = I915_READ(reg);
3484 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3485 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3486 I915_WRITE(reg, temp);
3488 reg = FDI_RX_CTL(pipe);
3489 temp = I915_READ(reg);
3490 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3491 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3492 I915_WRITE(reg, temp);
3495 udelay(2); /* should be 1.5us */
3497 for (i = 0; i < 4; i++) {
3498 reg = FDI_RX_IIR(pipe);
3499 temp = I915_READ(reg);
3500 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3502 if (temp & FDI_RX_SYMBOL_LOCK ||
3503 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3504 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3505 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3509 udelay(2); /* should be 1.5us */
3512 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
3516 DRM_DEBUG_KMS("FDI train done.\n");
3519 static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
3521 struct drm_device *dev = intel_crtc->base.dev;
3522 struct drm_i915_private *dev_priv = dev->dev_private;
3523 int pipe = intel_crtc->pipe;
3527 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
3528 reg = FDI_RX_CTL(pipe);
3529 temp = I915_READ(reg);
3530 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
3531 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3532 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3533 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3538 /* Switch from Rawclk to PCDclk */
3539 temp = I915_READ(reg);
3540 I915_WRITE(reg, temp | FDI_PCDCLK);
3545 /* Enable CPU FDI TX PLL, always on for Ironlake */
3546 reg = FDI_TX_CTL(pipe);
3547 temp = I915_READ(reg);
3548 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3549 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
3556 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3558 struct drm_device *dev = intel_crtc->base.dev;
3559 struct drm_i915_private *dev_priv = dev->dev_private;
3560 int pipe = intel_crtc->pipe;
3563 /* Switch from PCDclk to Rawclk */
3564 reg = FDI_RX_CTL(pipe);
3565 temp = I915_READ(reg);
3566 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3568 /* Disable CPU FDI TX PLL */
3569 reg = FDI_TX_CTL(pipe);
3570 temp = I915_READ(reg);
3571 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3576 reg = FDI_RX_CTL(pipe);
3577 temp = I915_READ(reg);
3578 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3580 /* Wait for the clocks to turn off. */
3585 static void ironlake_fdi_disable(struct drm_crtc *crtc)
3587 struct drm_device *dev = crtc->dev;
3588 struct drm_i915_private *dev_priv = dev->dev_private;
3589 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3590 int pipe = intel_crtc->pipe;
3593 /* disable CPU FDI tx and PCH FDI rx */
3594 reg = FDI_TX_CTL(pipe);
3595 temp = I915_READ(reg);
3596 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3599 reg = FDI_RX_CTL(pipe);
3600 temp = I915_READ(reg);
3601 temp &= ~(0x7 << 16);
3602 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3603 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3608 /* Ironlake workaround, disable clock pointer after downing FDI */
3609 if (HAS_PCH_IBX(dev))
3610 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3612 /* still set train pattern 1 */
3613 reg = FDI_TX_CTL(pipe);
3614 temp = I915_READ(reg);
3615 temp &= ~FDI_LINK_TRAIN_NONE;
3616 temp |= FDI_LINK_TRAIN_PATTERN_1;
3617 I915_WRITE(reg, temp);
3619 reg = FDI_RX_CTL(pipe);
3620 temp = I915_READ(reg);
3621 if (HAS_PCH_CPT(dev)) {
3622 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3623 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3625 temp &= ~FDI_LINK_TRAIN_NONE;
3626 temp |= FDI_LINK_TRAIN_PATTERN_1;
3628 /* BPC in FDI rx is consistent with that in PIPECONF */
3629 temp &= ~(0x07 << 16);
3630 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3631 I915_WRITE(reg, temp);
3637 bool intel_has_pending_fb_unpin(struct drm_device *dev)
3639 struct intel_crtc *crtc;
3641 /* Note that we don't need to be called with mode_config.lock here
3642 * as our list of CRTC objects is static for the lifetime of the
3643 * device and so cannot disappear as we iterate. Similarly, we can
3644 * happily treat the predicates as racy, atomic checks as userspace
3645 * cannot claim and pin a new fb without at least acquring the
3646 * struct_mutex and so serialising with us.
3648 for_each_intel_crtc(dev, crtc) {
3649 if (atomic_read(&crtc->unpin_work_count) == 0)
3652 if (crtc->unpin_work)
3653 intel_wait_for_vblank(dev, crtc->pipe);
3661 static void page_flip_completed(struct intel_crtc *intel_crtc)
3663 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3664 struct intel_unpin_work *work = intel_crtc->unpin_work;
3666 /* ensure that the unpin work is consistent wrt ->pending. */
3668 intel_crtc->unpin_work = NULL;
3671 drm_send_vblank_event(intel_crtc->base.dev,
3675 drm_crtc_vblank_put(&intel_crtc->base);
3677 wake_up_all(&dev_priv->pending_flip_queue);
3678 queue_work(dev_priv->wq, &work->work);
3680 trace_i915_flip_complete(intel_crtc->plane,
3681 work->pending_flip_obj);
3684 void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
3686 struct drm_device *dev = crtc->dev;
3687 struct drm_i915_private *dev_priv = dev->dev_private;
3689 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
3690 if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
3691 !intel_crtc_has_pending_flip(crtc),
3693 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3695 spin_lock_irq(&dev->event_lock);
3696 if (intel_crtc->unpin_work) {
3697 WARN_ONCE(1, "Removing stuck page flip\n");
3698 page_flip_completed(intel_crtc);
3700 spin_unlock_irq(&dev->event_lock);
3703 if (crtc->primary->fb) {
3704 mutex_lock(&dev->struct_mutex);
3705 intel_finish_fb(crtc->primary->fb);
3706 mutex_unlock(&dev->struct_mutex);
3710 /* Program iCLKIP clock to the desired frequency */
3711 static void lpt_program_iclkip(struct drm_crtc *crtc)
3713 struct drm_device *dev = crtc->dev;
3714 struct drm_i915_private *dev_priv = dev->dev_private;
3715 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
3716 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3719 mutex_lock(&dev_priv->dpio_lock);
3721 /* It is necessary to ungate the pixclk gate prior to programming
3722 * the divisors, and gate it back when it is done.
3724 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3726 /* Disable SSCCTL */
3727 intel_sbi_write(dev_priv, SBI_SSCCTL6,
3728 intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
3732 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
3733 if (clock == 20000) {
3738 /* The iCLK virtual clock root frequency is in MHz,
3739 * but the adjusted_mode->crtc_clock in in KHz. To get the
3740 * divisors, it is necessary to divide one by another, so we
3741 * convert the virtual clock precision to KHz here for higher
3744 u32 iclk_virtual_root_freq = 172800 * 1000;
3745 u32 iclk_pi_range = 64;
3746 u32 desired_divisor, msb_divisor_value, pi_value;
3748 desired_divisor = (iclk_virtual_root_freq / clock);
3749 msb_divisor_value = desired_divisor / iclk_pi_range;
3750 pi_value = desired_divisor % iclk_pi_range;
3753 divsel = msb_divisor_value - 2;
3754 phaseinc = pi_value;
3757 /* This should not happen with any sane values */
3758 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
3759 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
3760 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
3761 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
3763 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
3770 /* Program SSCDIVINTPHASE6 */
3771 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
3772 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
3773 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
3774 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
3775 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
3776 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
3777 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
3778 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
3780 /* Program SSCAUXDIV */
3781 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
3782 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
3783 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
3784 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
3786 /* Enable modulator and associated divider */
3787 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
3788 temp &= ~SBI_SSCCTL_DISABLE;
3789 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
3791 /* Wait for initialization time */
3794 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
3796 mutex_unlock(&dev_priv->dpio_lock);
3799 static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
3800 enum pipe pch_transcoder)
3802 struct drm_device *dev = crtc->base.dev;
3803 struct drm_i915_private *dev_priv = dev->dev_private;
3804 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
3806 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
3807 I915_READ(HTOTAL(cpu_transcoder)));
3808 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
3809 I915_READ(HBLANK(cpu_transcoder)));
3810 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
3811 I915_READ(HSYNC(cpu_transcoder)));
3813 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
3814 I915_READ(VTOTAL(cpu_transcoder)));
3815 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
3816 I915_READ(VBLANK(cpu_transcoder)));
3817 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
3818 I915_READ(VSYNC(cpu_transcoder)));
3819 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
3820 I915_READ(VSYNCSHIFT(cpu_transcoder)));
3823 static void cpt_enable_fdi_bc_bifurcation(struct drm_device *dev)
3825 struct drm_i915_private *dev_priv = dev->dev_private;
3828 temp = I915_READ(SOUTH_CHICKEN1);
3829 if (temp & FDI_BC_BIFURCATION_SELECT)
3832 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
3833 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
3835 temp |= FDI_BC_BIFURCATION_SELECT;
3836 DRM_DEBUG_KMS("enabling fdi C rx\n");
3837 I915_WRITE(SOUTH_CHICKEN1, temp);
3838 POSTING_READ(SOUTH_CHICKEN1);
3841 static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
3843 struct drm_device *dev = intel_crtc->base.dev;
3844 struct drm_i915_private *dev_priv = dev->dev_private;
3846 switch (intel_crtc->pipe) {
3850 if (intel_crtc->config->fdi_lanes > 2)
3851 WARN_ON(I915_READ(SOUTH_CHICKEN1) & FDI_BC_BIFURCATION_SELECT);
3853 cpt_enable_fdi_bc_bifurcation(dev);
3857 cpt_enable_fdi_bc_bifurcation(dev);
3866 * Enable PCH resources required for PCH ports:
3868 * - FDI training & RX/TX
3869 * - update transcoder timings
3870 * - DP transcoding bits
3873 static void ironlake_pch_enable(struct drm_crtc *crtc)
3875 struct drm_device *dev = crtc->dev;
3876 struct drm_i915_private *dev_priv = dev->dev_private;
3877 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3878 int pipe = intel_crtc->pipe;
3881 assert_pch_transcoder_disabled(dev_priv, pipe);
3883 if (IS_IVYBRIDGE(dev))
3884 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
3886 /* Write the TU size bits before fdi link training, so that error
3887 * detection works. */
3888 I915_WRITE(FDI_RX_TUSIZE1(pipe),
3889 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
3891 /* For PCH output, training FDI link */
3892 dev_priv->display.fdi_link_train(crtc);
3894 /* We need to program the right clock selection before writing the pixel
3895 * mutliplier into the DPLL. */
3896 if (HAS_PCH_CPT(dev)) {
3899 temp = I915_READ(PCH_DPLL_SEL);
3900 temp |= TRANS_DPLL_ENABLE(pipe);
3901 sel = TRANS_DPLLB_SEL(pipe);
3902 if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
3906 I915_WRITE(PCH_DPLL_SEL, temp);
3909 /* XXX: pch pll's can be enabled any time before we enable the PCH
3910 * transcoder, and we actually should do this to not upset any PCH
3911 * transcoder that already use the clock when we share it.
3913 * Note that enable_shared_dpll tries to do the right thing, but
3914 * get_shared_dpll unconditionally resets the pll - we need that to have
3915 * the right LVDS enable sequence. */
3916 intel_enable_shared_dpll(intel_crtc);
3918 /* set transcoder timing, panel must allow it */
3919 assert_panel_unlocked(dev_priv, pipe);
3920 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
3922 intel_fdi_normal_train(crtc);
3924 /* For PCH DP, enable TRANS_DP_CTL */
3925 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
3926 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
3927 reg = TRANS_DP_CTL(pipe);
3928 temp = I915_READ(reg);
3929 temp &= ~(TRANS_DP_PORT_SEL_MASK |
3930 TRANS_DP_SYNC_MASK |
3932 temp |= (TRANS_DP_OUTPUT_ENABLE |
3933 TRANS_DP_ENH_FRAMING);
3934 temp |= bpc << 9; /* same format but at 11:9 */
3936 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
3937 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
3938 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
3939 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
3941 switch (intel_trans_dp_port_sel(crtc)) {
3943 temp |= TRANS_DP_PORT_SEL_B;
3946 temp |= TRANS_DP_PORT_SEL_C;
3949 temp |= TRANS_DP_PORT_SEL_D;
3955 I915_WRITE(reg, temp);
3958 ironlake_enable_pch_transcoder(dev_priv, pipe);
3961 static void lpt_pch_enable(struct drm_crtc *crtc)
3963 struct drm_device *dev = crtc->dev;
3964 struct drm_i915_private *dev_priv = dev->dev_private;
3965 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3966 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
3968 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
3970 lpt_program_iclkip(crtc);
3972 /* Set transcoder timing. */
3973 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
3975 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
3978 void intel_put_shared_dpll(struct intel_crtc *crtc)
3980 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
3985 if (!(pll->config.crtc_mask & (1 << crtc->pipe))) {
3986 WARN(1, "bad %s crtc mask\n", pll->name);
3990 pll->config.crtc_mask &= ~(1 << crtc->pipe);
3991 if (pll->config.crtc_mask == 0) {
3993 WARN_ON(pll->active);
3996 crtc->config->shared_dpll = DPLL_ID_PRIVATE;
3999 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
4000 struct intel_crtc_state *crtc_state)
4002 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
4003 struct intel_shared_dpll *pll;
4004 enum intel_dpll_id i;
4006 if (HAS_PCH_IBX(dev_priv->dev)) {
4007 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
4008 i = (enum intel_dpll_id) crtc->pipe;
4009 pll = &dev_priv->shared_dplls[i];
4011 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4012 crtc->base.base.id, pll->name);
4014 WARN_ON(pll->new_config->crtc_mask);
4019 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4020 pll = &dev_priv->shared_dplls[i];
4022 /* Only want to check enabled timings first */
4023 if (pll->new_config->crtc_mask == 0)
4026 if (memcmp(&crtc_state->dpll_hw_state,
4027 &pll->new_config->hw_state,
4028 sizeof(pll->new_config->hw_state)) == 0) {
4029 DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
4030 crtc->base.base.id, pll->name,
4031 pll->new_config->crtc_mask,
4037 /* Ok no matching timings, maybe there's a free one? */
4038 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4039 pll = &dev_priv->shared_dplls[i];
4040 if (pll->new_config->crtc_mask == 0) {
4041 DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
4042 crtc->base.base.id, pll->name);
4050 if (pll->new_config->crtc_mask == 0)
4051 pll->new_config->hw_state = crtc_state->dpll_hw_state;
4053 crtc_state->shared_dpll = i;
4054 DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
4055 pipe_name(crtc->pipe));
4057 pll->new_config->crtc_mask |= 1 << crtc->pipe;
4063 * intel_shared_dpll_start_config - start a new PLL staged config
4064 * @dev_priv: DRM device
4065 * @clear_pipes: mask of pipes that will have their PLLs freed
4067 * Starts a new PLL staged config, copying the current config but
4068 * releasing the references of pipes specified in clear_pipes.
4070 static int intel_shared_dpll_start_config(struct drm_i915_private *dev_priv,
4071 unsigned clear_pipes)
4073 struct intel_shared_dpll *pll;
4074 enum intel_dpll_id i;
4076 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4077 pll = &dev_priv->shared_dplls[i];
4079 pll->new_config = kmemdup(&pll->config, sizeof pll->config,
4081 if (!pll->new_config)
4084 pll->new_config->crtc_mask &= ~clear_pipes;
4091 pll = &dev_priv->shared_dplls[i];
4092 kfree(pll->new_config);
4093 pll->new_config = NULL;
4099 static void intel_shared_dpll_commit(struct drm_i915_private *dev_priv)
4101 struct intel_shared_dpll *pll;
4102 enum intel_dpll_id i;
4104 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4105 pll = &dev_priv->shared_dplls[i];
4107 WARN_ON(pll->new_config == &pll->config);
4109 pll->config = *pll->new_config;
4110 kfree(pll->new_config);
4111 pll->new_config = NULL;
4115 static void intel_shared_dpll_abort_config(struct drm_i915_private *dev_priv)
4117 struct intel_shared_dpll *pll;
4118 enum intel_dpll_id i;
4120 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4121 pll = &dev_priv->shared_dplls[i];
4123 WARN_ON(pll->new_config == &pll->config);
4125 kfree(pll->new_config);
4126 pll->new_config = NULL;
4130 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4132 struct drm_i915_private *dev_priv = dev->dev_private;
4133 int dslreg = PIPEDSL(pipe);
4136 temp = I915_READ(dslreg);
4138 if (wait_for(I915_READ(dslreg) != temp, 5)) {
4139 if (wait_for(I915_READ(dslreg) != temp, 5))
4140 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4144 static void skylake_pfit_enable(struct intel_crtc *crtc)
4146 struct drm_device *dev = crtc->base.dev;
4147 struct drm_i915_private *dev_priv = dev->dev_private;
4148 int pipe = crtc->pipe;
4150 if (crtc->config->pch_pfit.enabled) {
4151 I915_WRITE(PS_CTL(pipe), PS_ENABLE);
4152 I915_WRITE(PS_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4153 I915_WRITE(PS_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4157 static void ironlake_pfit_enable(struct intel_crtc *crtc)
4159 struct drm_device *dev = crtc->base.dev;
4160 struct drm_i915_private *dev_priv = dev->dev_private;
4161 int pipe = crtc->pipe;
4163 if (crtc->config->pch_pfit.enabled) {
4164 /* Force use of hard-coded filter coefficients
4165 * as some pre-programmed values are broken,
4168 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4169 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4170 PF_PIPE_SEL_IVB(pipe));
4172 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
4173 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4174 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4178 static void intel_enable_sprite_planes(struct drm_crtc *crtc)
4180 struct drm_device *dev = crtc->dev;
4181 enum pipe pipe = to_intel_crtc(crtc)->pipe;
4182 struct drm_plane *plane;
4183 struct intel_plane *intel_plane;
4185 drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
4186 intel_plane = to_intel_plane(plane);
4187 if (intel_plane->pipe == pipe)
4188 intel_plane_restore(&intel_plane->base);
4192 static void intel_disable_sprite_planes(struct drm_crtc *crtc)
4194 struct drm_device *dev = crtc->dev;
4195 enum pipe pipe = to_intel_crtc(crtc)->pipe;
4196 struct drm_plane *plane;
4197 struct intel_plane *intel_plane;
4199 drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
4200 intel_plane = to_intel_plane(plane);
4201 if (intel_plane->pipe == pipe)
4202 plane->funcs->disable_plane(plane);
4206 void hsw_enable_ips(struct intel_crtc *crtc)
4208 struct drm_device *dev = crtc->base.dev;
4209 struct drm_i915_private *dev_priv = dev->dev_private;
4211 if (!crtc->config->ips_enabled)
4214 /* We can only enable IPS after we enable a plane and wait for a vblank */
4215 intel_wait_for_vblank(dev, crtc->pipe);
4217 assert_plane_enabled(dev_priv, crtc->plane);
4218 if (IS_BROADWELL(dev)) {
4219 mutex_lock(&dev_priv->rps.hw_lock);
4220 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4221 mutex_unlock(&dev_priv->rps.hw_lock);
4222 /* Quoting Art Runyan: "its not safe to expect any particular
4223 * value in IPS_CTL bit 31 after enabling IPS through the
4224 * mailbox." Moreover, the mailbox may return a bogus state,
4225 * so we need to just enable it and continue on.
4228 I915_WRITE(IPS_CTL, IPS_ENABLE);
4229 /* The bit only becomes 1 in the next vblank, so this wait here
4230 * is essentially intel_wait_for_vblank. If we don't have this
4231 * and don't wait for vblanks until the end of crtc_enable, then
4232 * the HW state readout code will complain that the expected
4233 * IPS_CTL value is not the one we read. */
4234 if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
4235 DRM_ERROR("Timed out waiting for IPS enable\n");
4239 void hsw_disable_ips(struct intel_crtc *crtc)
4241 struct drm_device *dev = crtc->base.dev;
4242 struct drm_i915_private *dev_priv = dev->dev_private;
4244 if (!crtc->config->ips_enabled)
4247 assert_plane_enabled(dev_priv, crtc->plane);
4248 if (IS_BROADWELL(dev)) {
4249 mutex_lock(&dev_priv->rps.hw_lock);
4250 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4251 mutex_unlock(&dev_priv->rps.hw_lock);
4252 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4253 if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
4254 DRM_ERROR("Timed out waiting for IPS disable\n");
4256 I915_WRITE(IPS_CTL, 0);
4257 POSTING_READ(IPS_CTL);
4260 /* We need to wait for a vblank before we can disable the plane. */
4261 intel_wait_for_vblank(dev, crtc->pipe);
4264 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4265 static void intel_crtc_load_lut(struct drm_crtc *crtc)
4267 struct drm_device *dev = crtc->dev;
4268 struct drm_i915_private *dev_priv = dev->dev_private;
4269 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4270 enum pipe pipe = intel_crtc->pipe;
4271 int palreg = PALETTE(pipe);
4273 bool reenable_ips = false;
4275 /* The clocks have to be on to load the palette. */
4276 if (!crtc->state->enable || !intel_crtc->active)
4279 if (!HAS_PCH_SPLIT(dev_priv->dev)) {
4280 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
4281 assert_dsi_pll_enabled(dev_priv);
4283 assert_pll_enabled(dev_priv, pipe);
4286 /* use legacy palette for Ironlake */
4287 if (!HAS_GMCH_DISPLAY(dev))
4288 palreg = LGC_PALETTE(pipe);
4290 /* Workaround : Do not read or write the pipe palette/gamma data while
4291 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
4293 if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
4294 ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
4295 GAMMA_MODE_MODE_SPLIT)) {
4296 hsw_disable_ips(intel_crtc);
4297 reenable_ips = true;
4300 for (i = 0; i < 256; i++) {
4301 I915_WRITE(palreg + 4 * i,
4302 (intel_crtc->lut_r[i] << 16) |
4303 (intel_crtc->lut_g[i] << 8) |
4304 intel_crtc->lut_b[i]);
4308 hsw_enable_ips(intel_crtc);
4311 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
4313 if (!enable && intel_crtc->overlay) {
4314 struct drm_device *dev = intel_crtc->base.dev;
4315 struct drm_i915_private *dev_priv = dev->dev_private;
4317 mutex_lock(&dev->struct_mutex);
4318 dev_priv->mm.interruptible = false;
4319 (void) intel_overlay_switch_off(intel_crtc->overlay);
4320 dev_priv->mm.interruptible = true;
4321 mutex_unlock(&dev->struct_mutex);
4324 /* Let userspace switch the overlay on again. In most cases userspace
4325 * has to recompute where to put it anyway.
4329 static void intel_crtc_enable_planes(struct drm_crtc *crtc)
4331 struct drm_device *dev = crtc->dev;
4332 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4333 int pipe = intel_crtc->pipe;
4335 intel_enable_primary_hw_plane(crtc->primary, crtc);
4336 intel_enable_sprite_planes(crtc);
4337 intel_crtc_update_cursor(crtc, true);
4338 intel_crtc_dpms_overlay(intel_crtc, true);
4340 hsw_enable_ips(intel_crtc);
4342 mutex_lock(&dev->struct_mutex);
4343 intel_fbc_update(dev);
4344 mutex_unlock(&dev->struct_mutex);
4347 * FIXME: Once we grow proper nuclear flip support out of this we need
4348 * to compute the mask of flip planes precisely. For the time being
4349 * consider this a flip from a NULL plane.
4351 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4354 static void intel_crtc_disable_planes(struct drm_crtc *crtc)
4356 struct drm_device *dev = crtc->dev;
4357 struct drm_i915_private *dev_priv = dev->dev_private;
4358 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4359 int pipe = intel_crtc->pipe;
4361 intel_crtc_wait_for_pending_flips(crtc);
4363 if (dev_priv->fbc.crtc == intel_crtc)
4364 intel_fbc_disable(dev);
4366 hsw_disable_ips(intel_crtc);
4368 intel_crtc_dpms_overlay(intel_crtc, false);
4369 intel_crtc_update_cursor(crtc, false);
4370 intel_disable_sprite_planes(crtc);
4371 intel_disable_primary_hw_plane(crtc->primary, crtc);
4374 * FIXME: Once we grow proper nuclear flip support out of this we need
4375 * to compute the mask of flip planes precisely. For the time being
4376 * consider this a flip to a NULL plane.
4378 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4381 static void ironlake_crtc_enable(struct drm_crtc *crtc)
4383 struct drm_device *dev = crtc->dev;
4384 struct drm_i915_private *dev_priv = dev->dev_private;
4385 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4386 struct intel_encoder *encoder;
4387 int pipe = intel_crtc->pipe;
4389 WARN_ON(!crtc->state->enable);
4391 if (intel_crtc->active)
4394 if (intel_crtc->config->has_pch_encoder)
4395 intel_prepare_shared_dpll(intel_crtc);
4397 if (intel_crtc->config->has_dp_encoder)
4398 intel_dp_set_m_n(intel_crtc, M1_N1);
4400 intel_set_pipe_timings(intel_crtc);
4402 if (intel_crtc->config->has_pch_encoder) {
4403 intel_cpu_transcoder_set_m_n(intel_crtc,
4404 &intel_crtc->config->fdi_m_n, NULL);
4407 ironlake_set_pipeconf(crtc);
4409 intel_crtc->active = true;
4411 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4412 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
4414 for_each_encoder_on_crtc(dev, crtc, encoder)
4415 if (encoder->pre_enable)
4416 encoder->pre_enable(encoder);
4418 if (intel_crtc->config->has_pch_encoder) {
4419 /* Note: FDI PLL enabling _must_ be done before we enable the
4420 * cpu pipes, hence this is separate from all the other fdi/pch
4422 ironlake_fdi_pll_enable(intel_crtc);
4424 assert_fdi_tx_disabled(dev_priv, pipe);
4425 assert_fdi_rx_disabled(dev_priv, pipe);
4428 ironlake_pfit_enable(intel_crtc);
4431 * On ILK+ LUT must be loaded before the pipe is running but with
4434 intel_crtc_load_lut(crtc);
4436 intel_update_watermarks(crtc);
4437 intel_enable_pipe(intel_crtc);
4439 if (intel_crtc->config->has_pch_encoder)
4440 ironlake_pch_enable(crtc);
4442 assert_vblank_disabled(crtc);
4443 drm_crtc_vblank_on(crtc);
4445 for_each_encoder_on_crtc(dev, crtc, encoder)
4446 encoder->enable(encoder);
4448 if (HAS_PCH_CPT(dev))
4449 cpt_verify_modeset(dev, intel_crtc->pipe);
4451 intel_crtc_enable_planes(crtc);
4454 /* IPS only exists on ULT machines and is tied to pipe A. */
4455 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4457 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
4461 * This implements the workaround described in the "notes" section of the mode
4462 * set sequence documentation. When going from no pipes or single pipe to
4463 * multiple pipes, and planes are enabled after the pipe, we need to wait at
4464 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
4466 static void haswell_mode_set_planes_workaround(struct intel_crtc *crtc)
4468 struct drm_device *dev = crtc->base.dev;
4469 struct intel_crtc *crtc_it, *other_active_crtc = NULL;
4471 /* We want to get the other_active_crtc only if there's only 1 other
4473 for_each_intel_crtc(dev, crtc_it) {
4474 if (!crtc_it->active || crtc_it == crtc)
4477 if (other_active_crtc)
4480 other_active_crtc = crtc_it;
4482 if (!other_active_crtc)
4485 intel_wait_for_vblank(dev, other_active_crtc->pipe);
4486 intel_wait_for_vblank(dev, other_active_crtc->pipe);
4489 static void haswell_crtc_enable(struct drm_crtc *crtc)
4491 struct drm_device *dev = crtc->dev;
4492 struct drm_i915_private *dev_priv = dev->dev_private;
4493 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4494 struct intel_encoder *encoder;
4495 int pipe = intel_crtc->pipe;
4497 WARN_ON(!crtc->state->enable);
4499 if (intel_crtc->active)
4502 if (intel_crtc_to_shared_dpll(intel_crtc))
4503 intel_enable_shared_dpll(intel_crtc);
4505 if (intel_crtc->config->has_dp_encoder)
4506 intel_dp_set_m_n(intel_crtc, M1_N1);
4508 intel_set_pipe_timings(intel_crtc);
4510 if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
4511 I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
4512 intel_crtc->config->pixel_multiplier - 1);
4515 if (intel_crtc->config->has_pch_encoder) {
4516 intel_cpu_transcoder_set_m_n(intel_crtc,
4517 &intel_crtc->config->fdi_m_n, NULL);
4520 haswell_set_pipeconf(crtc);
4522 intel_set_pipe_csc(crtc);
4524 intel_crtc->active = true;
4526 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4527 for_each_encoder_on_crtc(dev, crtc, encoder)
4528 if (encoder->pre_enable)
4529 encoder->pre_enable(encoder);
4531 if (intel_crtc->config->has_pch_encoder) {
4532 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4534 dev_priv->display.fdi_link_train(crtc);
4537 intel_ddi_enable_pipe_clock(intel_crtc);
4539 if (IS_SKYLAKE(dev))
4540 skylake_pfit_enable(intel_crtc);
4542 ironlake_pfit_enable(intel_crtc);
4545 * On ILK+ LUT must be loaded before the pipe is running but with
4548 intel_crtc_load_lut(crtc);
4550 intel_ddi_set_pipe_settings(crtc);
4551 intel_ddi_enable_transcoder_func(crtc);
4553 intel_update_watermarks(crtc);
4554 intel_enable_pipe(intel_crtc);
4556 if (intel_crtc->config->has_pch_encoder)
4557 lpt_pch_enable(crtc);
4559 if (intel_crtc->config->dp_encoder_is_mst)
4560 intel_ddi_set_vc_payload_alloc(crtc, true);
4562 assert_vblank_disabled(crtc);
4563 drm_crtc_vblank_on(crtc);
4565 for_each_encoder_on_crtc(dev, crtc, encoder) {
4566 encoder->enable(encoder);
4567 intel_opregion_notify_encoder(encoder, true);
4570 /* If we change the relative order between pipe/planes enabling, we need
4571 * to change the workaround. */
4572 haswell_mode_set_planes_workaround(intel_crtc);
4573 intel_crtc_enable_planes(crtc);
4576 static void skylake_pfit_disable(struct intel_crtc *crtc)
4578 struct drm_device *dev = crtc->base.dev;
4579 struct drm_i915_private *dev_priv = dev->dev_private;
4580 int pipe = crtc->pipe;
4582 /* To avoid upsetting the power well on haswell only disable the pfit if
4583 * it's in use. The hw state code will make sure we get this right. */
4584 if (crtc->config->pch_pfit.enabled) {
4585 I915_WRITE(PS_CTL(pipe), 0);
4586 I915_WRITE(PS_WIN_POS(pipe), 0);
4587 I915_WRITE(PS_WIN_SZ(pipe), 0);
4591 static void ironlake_pfit_disable(struct intel_crtc *crtc)
4593 struct drm_device *dev = crtc->base.dev;
4594 struct drm_i915_private *dev_priv = dev->dev_private;
4595 int pipe = crtc->pipe;
4597 /* To avoid upsetting the power well on haswell only disable the pfit if
4598 * it's in use. The hw state code will make sure we get this right. */
4599 if (crtc->config->pch_pfit.enabled) {
4600 I915_WRITE(PF_CTL(pipe), 0);
4601 I915_WRITE(PF_WIN_POS(pipe), 0);
4602 I915_WRITE(PF_WIN_SZ(pipe), 0);
4606 static void ironlake_crtc_disable(struct drm_crtc *crtc)
4608 struct drm_device *dev = crtc->dev;
4609 struct drm_i915_private *dev_priv = dev->dev_private;
4610 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4611 struct intel_encoder *encoder;
4612 int pipe = intel_crtc->pipe;
4615 if (!intel_crtc->active)
4618 intel_crtc_disable_planes(crtc);
4620 for_each_encoder_on_crtc(dev, crtc, encoder)
4621 encoder->disable(encoder);
4623 drm_crtc_vblank_off(crtc);
4624 assert_vblank_disabled(crtc);
4626 if (intel_crtc->config->has_pch_encoder)
4627 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
4629 intel_disable_pipe(intel_crtc);
4631 ironlake_pfit_disable(intel_crtc);
4633 for_each_encoder_on_crtc(dev, crtc, encoder)
4634 if (encoder->post_disable)
4635 encoder->post_disable(encoder);
4637 if (intel_crtc->config->has_pch_encoder) {
4638 ironlake_fdi_disable(crtc);
4640 ironlake_disable_pch_transcoder(dev_priv, pipe);
4642 if (HAS_PCH_CPT(dev)) {
4643 /* disable TRANS_DP_CTL */
4644 reg = TRANS_DP_CTL(pipe);
4645 temp = I915_READ(reg);
4646 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
4647 TRANS_DP_PORT_SEL_MASK);
4648 temp |= TRANS_DP_PORT_SEL_NONE;
4649 I915_WRITE(reg, temp);
4651 /* disable DPLL_SEL */
4652 temp = I915_READ(PCH_DPLL_SEL);
4653 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
4654 I915_WRITE(PCH_DPLL_SEL, temp);
4657 /* disable PCH DPLL */
4658 intel_disable_shared_dpll(intel_crtc);
4660 ironlake_fdi_pll_disable(intel_crtc);
4663 intel_crtc->active = false;
4664 intel_update_watermarks(crtc);
4666 mutex_lock(&dev->struct_mutex);
4667 intel_fbc_update(dev);
4668 mutex_unlock(&dev->struct_mutex);
4671 static void haswell_crtc_disable(struct drm_crtc *crtc)
4673 struct drm_device *dev = crtc->dev;
4674 struct drm_i915_private *dev_priv = dev->dev_private;
4675 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4676 struct intel_encoder *encoder;
4677 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4679 if (!intel_crtc->active)
4682 intel_crtc_disable_planes(crtc);
4684 for_each_encoder_on_crtc(dev, crtc, encoder) {
4685 intel_opregion_notify_encoder(encoder, false);
4686 encoder->disable(encoder);
4689 drm_crtc_vblank_off(crtc);
4690 assert_vblank_disabled(crtc);
4692 if (intel_crtc->config->has_pch_encoder)
4693 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4695 intel_disable_pipe(intel_crtc);
4697 if (intel_crtc->config->dp_encoder_is_mst)
4698 intel_ddi_set_vc_payload_alloc(crtc, false);
4700 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
4702 if (IS_SKYLAKE(dev))
4703 skylake_pfit_disable(intel_crtc);
4705 ironlake_pfit_disable(intel_crtc);
4707 intel_ddi_disable_pipe_clock(intel_crtc);
4709 if (intel_crtc->config->has_pch_encoder) {
4710 lpt_disable_pch_transcoder(dev_priv);
4711 intel_ddi_fdi_disable(crtc);
4714 for_each_encoder_on_crtc(dev, crtc, encoder)
4715 if (encoder->post_disable)
4716 encoder->post_disable(encoder);
4718 intel_crtc->active = false;
4719 intel_update_watermarks(crtc);
4721 mutex_lock(&dev->struct_mutex);
4722 intel_fbc_update(dev);
4723 mutex_unlock(&dev->struct_mutex);
4725 if (intel_crtc_to_shared_dpll(intel_crtc))
4726 intel_disable_shared_dpll(intel_crtc);
4729 static void ironlake_crtc_off(struct drm_crtc *crtc)
4731 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4732 intel_put_shared_dpll(intel_crtc);
4736 static void i9xx_pfit_enable(struct intel_crtc *crtc)
4738 struct drm_device *dev = crtc->base.dev;
4739 struct drm_i915_private *dev_priv = dev->dev_private;
4740 struct intel_crtc_state *pipe_config = crtc->config;
4742 if (!pipe_config->gmch_pfit.control)
4746 * The panel fitter should only be adjusted whilst the pipe is disabled,
4747 * according to register description and PRM.
4749 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
4750 assert_pipe_disabled(dev_priv, crtc->pipe);
4752 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
4753 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
4755 /* Border color in case we don't scale up to the full screen. Black by
4756 * default, change to something else for debugging. */
4757 I915_WRITE(BCLRPAT(crtc->pipe), 0);
4760 static enum intel_display_power_domain port_to_power_domain(enum port port)
4764 return POWER_DOMAIN_PORT_DDI_A_4_LANES;
4766 return POWER_DOMAIN_PORT_DDI_B_4_LANES;
4768 return POWER_DOMAIN_PORT_DDI_C_4_LANES;
4770 return POWER_DOMAIN_PORT_DDI_D_4_LANES;
4773 return POWER_DOMAIN_PORT_OTHER;
4777 #define for_each_power_domain(domain, mask) \
4778 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
4779 if ((1 << (domain)) & (mask))
4781 enum intel_display_power_domain
4782 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
4784 struct drm_device *dev = intel_encoder->base.dev;
4785 struct intel_digital_port *intel_dig_port;
4787 switch (intel_encoder->type) {
4788 case INTEL_OUTPUT_UNKNOWN:
4789 /* Only DDI platforms should ever use this output type */
4790 WARN_ON_ONCE(!HAS_DDI(dev));
4791 case INTEL_OUTPUT_DISPLAYPORT:
4792 case INTEL_OUTPUT_HDMI:
4793 case INTEL_OUTPUT_EDP:
4794 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
4795 return port_to_power_domain(intel_dig_port->port);
4796 case INTEL_OUTPUT_DP_MST:
4797 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
4798 return port_to_power_domain(intel_dig_port->port);
4799 case INTEL_OUTPUT_ANALOG:
4800 return POWER_DOMAIN_PORT_CRT;
4801 case INTEL_OUTPUT_DSI:
4802 return POWER_DOMAIN_PORT_DSI;
4804 return POWER_DOMAIN_PORT_OTHER;
4808 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
4810 struct drm_device *dev = crtc->dev;
4811 struct intel_encoder *intel_encoder;
4812 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4813 enum pipe pipe = intel_crtc->pipe;
4815 enum transcoder transcoder;
4817 transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
4819 mask = BIT(POWER_DOMAIN_PIPE(pipe));
4820 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
4821 if (intel_crtc->config->pch_pfit.enabled ||
4822 intel_crtc->config->pch_pfit.force_thru)
4823 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
4825 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
4826 mask |= BIT(intel_display_port_power_domain(intel_encoder));
4831 static void modeset_update_crtc_power_domains(struct drm_device *dev)
4833 struct drm_i915_private *dev_priv = dev->dev_private;
4834 unsigned long pipe_domains[I915_MAX_PIPES] = { 0, };
4835 struct intel_crtc *crtc;
4838 * First get all needed power domains, then put all unneeded, to avoid
4839 * any unnecessary toggling of the power wells.
4841 for_each_intel_crtc(dev, crtc) {
4842 enum intel_display_power_domain domain;
4844 if (!crtc->base.state->enable)
4847 pipe_domains[crtc->pipe] = get_crtc_power_domains(&crtc->base);
4849 for_each_power_domain(domain, pipe_domains[crtc->pipe])
4850 intel_display_power_get(dev_priv, domain);
4853 if (dev_priv->display.modeset_global_resources)
4854 dev_priv->display.modeset_global_resources(dev);
4856 for_each_intel_crtc(dev, crtc) {
4857 enum intel_display_power_domain domain;
4859 for_each_power_domain(domain, crtc->enabled_power_domains)
4860 intel_display_power_put(dev_priv, domain);
4862 crtc->enabled_power_domains = pipe_domains[crtc->pipe];
4865 intel_display_set_init_power(dev_priv, false);
4868 /* returns HPLL frequency in kHz */
4869 static int valleyview_get_vco(struct drm_i915_private *dev_priv)
4871 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
4873 /* Obtain SKU information */
4874 mutex_lock(&dev_priv->dpio_lock);
4875 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
4876 CCK_FUSE_HPLL_FREQ_MASK;
4877 mutex_unlock(&dev_priv->dpio_lock);
4879 return vco_freq[hpll_freq] * 1000;
4882 static void vlv_update_cdclk(struct drm_device *dev)
4884 struct drm_i915_private *dev_priv = dev->dev_private;
4886 dev_priv->vlv_cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
4887 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
4888 dev_priv->vlv_cdclk_freq);
4891 * Program the gmbus_freq based on the cdclk frequency.
4892 * BSpec erroneously claims we should aim for 4MHz, but
4893 * in fact 1MHz is the correct frequency.
4895 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->vlv_cdclk_freq, 1000));
4898 /* Adjust CDclk dividers to allow high res or save power if possible */
4899 static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
4901 struct drm_i915_private *dev_priv = dev->dev_private;
4904 WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
4906 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
4908 else if (cdclk == 266667)
4913 mutex_lock(&dev_priv->rps.hw_lock);
4914 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
4915 val &= ~DSPFREQGUAR_MASK;
4916 val |= (cmd << DSPFREQGUAR_SHIFT);
4917 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
4918 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
4919 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
4921 DRM_ERROR("timed out waiting for CDclk change\n");
4923 mutex_unlock(&dev_priv->rps.hw_lock);
4925 if (cdclk == 400000) {
4928 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
4930 mutex_lock(&dev_priv->dpio_lock);
4931 /* adjust cdclk divider */
4932 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
4933 val &= ~DISPLAY_FREQUENCY_VALUES;
4935 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
4937 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
4938 DISPLAY_FREQUENCY_STATUS) == (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
4940 DRM_ERROR("timed out waiting for CDclk change\n");
4941 mutex_unlock(&dev_priv->dpio_lock);
4944 mutex_lock(&dev_priv->dpio_lock);
4945 /* adjust self-refresh exit latency value */
4946 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
4950 * For high bandwidth configs, we set a higher latency in the bunit
4951 * so that the core display fetch happens in time to avoid underruns.
4953 if (cdclk == 400000)
4954 val |= 4500 / 250; /* 4.5 usec */
4956 val |= 3000 / 250; /* 3.0 usec */
4957 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
4958 mutex_unlock(&dev_priv->dpio_lock);
4960 vlv_update_cdclk(dev);
4963 static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
4965 struct drm_i915_private *dev_priv = dev->dev_private;
4968 WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
4985 MISSING_CASE(cdclk);
4989 mutex_lock(&dev_priv->rps.hw_lock);
4990 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
4991 val &= ~DSPFREQGUAR_MASK_CHV;
4992 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
4993 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
4994 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
4995 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
4997 DRM_ERROR("timed out waiting for CDclk change\n");
4999 mutex_unlock(&dev_priv->rps.hw_lock);
5001 vlv_update_cdclk(dev);
5004 static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5007 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
5009 /* FIXME: Punit isn't quite ready yet */
5010 if (IS_CHERRYVIEW(dev_priv->dev))
5014 * Really only a few cases to deal with, as only 4 CDclks are supported:
5017 * 320/333MHz (depends on HPLL freq)
5019 * So we check to see whether we're above 90% of the lower bin and
5022 * We seem to get an unstable or solid color picture at 200MHz.
5023 * Not sure what's wrong. For now use 200MHz only when all pipes
5026 if (max_pixclk > freq_320*9/10)
5028 else if (max_pixclk > 266667*9/10)
5030 else if (max_pixclk > 0)
5036 /* compute the max pixel clock for new configuration */
5037 static int intel_mode_max_pixclk(struct drm_i915_private *dev_priv)
5039 struct drm_device *dev = dev_priv->dev;
5040 struct intel_crtc *intel_crtc;
5043 for_each_intel_crtc(dev, intel_crtc) {
5044 if (intel_crtc->new_enabled)
5045 max_pixclk = max(max_pixclk,
5046 intel_crtc->new_config->base.adjusted_mode.crtc_clock);
5052 static void valleyview_modeset_global_pipes(struct drm_device *dev,
5053 unsigned *prepare_pipes)
5055 struct drm_i915_private *dev_priv = dev->dev_private;
5056 struct intel_crtc *intel_crtc;
5057 int max_pixclk = intel_mode_max_pixclk(dev_priv);
5059 if (valleyview_calc_cdclk(dev_priv, max_pixclk) ==
5060 dev_priv->vlv_cdclk_freq)
5063 /* disable/enable all currently active pipes while we change cdclk */
5064 for_each_intel_crtc(dev, intel_crtc)
5065 if (intel_crtc->base.state->enable)
5066 *prepare_pipes |= (1 << intel_crtc->pipe);
5069 static void valleyview_modeset_global_resources(struct drm_device *dev)
5071 struct drm_i915_private *dev_priv = dev->dev_private;
5072 int max_pixclk = intel_mode_max_pixclk(dev_priv);
5073 int req_cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
5075 if (req_cdclk != dev_priv->vlv_cdclk_freq) {
5077 * FIXME: We can end up here with all power domains off, yet
5078 * with a CDCLK frequency other than the minimum. To account
5079 * for this take the PIPE-A power domain, which covers the HW
5080 * blocks needed for the following programming. This can be
5081 * removed once it's guaranteed that we get here either with
5082 * the minimum CDCLK set, or the required power domains
5085 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
5087 if (IS_CHERRYVIEW(dev))
5088 cherryview_set_cdclk(dev, req_cdclk);
5090 valleyview_set_cdclk(dev, req_cdclk);
5092 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
5096 static void valleyview_crtc_enable(struct drm_crtc *crtc)
5098 struct drm_device *dev = crtc->dev;
5099 struct drm_i915_private *dev_priv = to_i915(dev);
5100 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5101 struct intel_encoder *encoder;
5102 int pipe = intel_crtc->pipe;
5105 WARN_ON(!crtc->state->enable);
5107 if (intel_crtc->active)
5110 is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
5113 if (IS_CHERRYVIEW(dev))
5114 chv_prepare_pll(intel_crtc, intel_crtc->config);
5116 vlv_prepare_pll(intel_crtc, intel_crtc->config);
5119 if (intel_crtc->config->has_dp_encoder)
5120 intel_dp_set_m_n(intel_crtc, M1_N1);
5122 intel_set_pipe_timings(intel_crtc);
5124 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
5125 struct drm_i915_private *dev_priv = dev->dev_private;
5127 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
5128 I915_WRITE(CHV_CANVAS(pipe), 0);
5131 i9xx_set_pipeconf(intel_crtc);
5133 intel_crtc->active = true;
5135 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5137 for_each_encoder_on_crtc(dev, crtc, encoder)
5138 if (encoder->pre_pll_enable)
5139 encoder->pre_pll_enable(encoder);
5142 if (IS_CHERRYVIEW(dev))
5143 chv_enable_pll(intel_crtc, intel_crtc->config);
5145 vlv_enable_pll(intel_crtc, intel_crtc->config);
5148 for_each_encoder_on_crtc(dev, crtc, encoder)
5149 if (encoder->pre_enable)
5150 encoder->pre_enable(encoder);
5152 i9xx_pfit_enable(intel_crtc);
5154 intel_crtc_load_lut(crtc);
5156 intel_update_watermarks(crtc);
5157 intel_enable_pipe(intel_crtc);
5159 assert_vblank_disabled(crtc);
5160 drm_crtc_vblank_on(crtc);
5162 for_each_encoder_on_crtc(dev, crtc, encoder)
5163 encoder->enable(encoder);
5165 intel_crtc_enable_planes(crtc);
5167 /* Underruns don't raise interrupts, so check manually. */
5168 i9xx_check_fifo_underruns(dev_priv);
5171 static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
5173 struct drm_device *dev = crtc->base.dev;
5174 struct drm_i915_private *dev_priv = dev->dev_private;
5176 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
5177 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
5180 static void i9xx_crtc_enable(struct drm_crtc *crtc)
5182 struct drm_device *dev = crtc->dev;
5183 struct drm_i915_private *dev_priv = to_i915(dev);
5184 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5185 struct intel_encoder *encoder;
5186 int pipe = intel_crtc->pipe;
5188 WARN_ON(!crtc->state->enable);
5190 if (intel_crtc->active)
5193 i9xx_set_pll_dividers(intel_crtc);
5195 if (intel_crtc->config->has_dp_encoder)
5196 intel_dp_set_m_n(intel_crtc, M1_N1);
5198 intel_set_pipe_timings(intel_crtc);
5200 i9xx_set_pipeconf(intel_crtc);
5202 intel_crtc->active = true;
5205 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5207 for_each_encoder_on_crtc(dev, crtc, encoder)
5208 if (encoder->pre_enable)
5209 encoder->pre_enable(encoder);
5211 i9xx_enable_pll(intel_crtc);
5213 i9xx_pfit_enable(intel_crtc);
5215 intel_crtc_load_lut(crtc);
5217 intel_update_watermarks(crtc);
5218 intel_enable_pipe(intel_crtc);
5220 assert_vblank_disabled(crtc);
5221 drm_crtc_vblank_on(crtc);
5223 for_each_encoder_on_crtc(dev, crtc, encoder)
5224 encoder->enable(encoder);
5226 intel_crtc_enable_planes(crtc);
5229 * Gen2 reports pipe underruns whenever all planes are disabled.
5230 * So don't enable underrun reporting before at least some planes
5232 * FIXME: Need to fix the logic to work when we turn off all planes
5233 * but leave the pipe running.
5236 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5238 /* Underruns don't raise interrupts, so check manually. */
5239 i9xx_check_fifo_underruns(dev_priv);
5242 static void i9xx_pfit_disable(struct intel_crtc *crtc)
5244 struct drm_device *dev = crtc->base.dev;
5245 struct drm_i915_private *dev_priv = dev->dev_private;
5247 if (!crtc->config->gmch_pfit.control)
5250 assert_pipe_disabled(dev_priv, crtc->pipe);
5252 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
5253 I915_READ(PFIT_CONTROL));
5254 I915_WRITE(PFIT_CONTROL, 0);
5257 static void i9xx_crtc_disable(struct drm_crtc *crtc)
5259 struct drm_device *dev = crtc->dev;
5260 struct drm_i915_private *dev_priv = dev->dev_private;
5261 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5262 struct intel_encoder *encoder;
5263 int pipe = intel_crtc->pipe;
5265 if (!intel_crtc->active)
5269 * Gen2 reports pipe underruns whenever all planes are disabled.
5270 * So diasble underrun reporting before all the planes get disabled.
5271 * FIXME: Need to fix the logic to work when we turn off all planes
5272 * but leave the pipe running.
5275 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
5278 * Vblank time updates from the shadow to live plane control register
5279 * are blocked if the memory self-refresh mode is active at that
5280 * moment. So to make sure the plane gets truly disabled, disable
5281 * first the self-refresh mode. The self-refresh enable bit in turn
5282 * will be checked/applied by the HW only at the next frame start
5283 * event which is after the vblank start event, so we need to have a
5284 * wait-for-vblank between disabling the plane and the pipe.
5286 intel_set_memory_cxsr(dev_priv, false);
5287 intel_crtc_disable_planes(crtc);
5290 * On gen2 planes are double buffered but the pipe isn't, so we must
5291 * wait for planes to fully turn off before disabling the pipe.
5292 * We also need to wait on all gmch platforms because of the
5293 * self-refresh mode constraint explained above.
5295 intel_wait_for_vblank(dev, pipe);
5297 for_each_encoder_on_crtc(dev, crtc, encoder)
5298 encoder->disable(encoder);
5300 drm_crtc_vblank_off(crtc);
5301 assert_vblank_disabled(crtc);
5303 intel_disable_pipe(intel_crtc);
5305 i9xx_pfit_disable(intel_crtc);
5307 for_each_encoder_on_crtc(dev, crtc, encoder)
5308 if (encoder->post_disable)
5309 encoder->post_disable(encoder);
5311 if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
5312 if (IS_CHERRYVIEW(dev))
5313 chv_disable_pll(dev_priv, pipe);
5314 else if (IS_VALLEYVIEW(dev))
5315 vlv_disable_pll(dev_priv, pipe);
5317 i9xx_disable_pll(intel_crtc);
5321 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
5323 intel_crtc->active = false;
5324 intel_update_watermarks(crtc);
5326 mutex_lock(&dev->struct_mutex);
5327 intel_fbc_update(dev);
5328 mutex_unlock(&dev->struct_mutex);
5331 static void i9xx_crtc_off(struct drm_crtc *crtc)
5335 /* Master function to enable/disable CRTC and corresponding power wells */
5336 void intel_crtc_control(struct drm_crtc *crtc, bool enable)
5338 struct drm_device *dev = crtc->dev;
5339 struct drm_i915_private *dev_priv = dev->dev_private;
5340 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5341 enum intel_display_power_domain domain;
5342 unsigned long domains;
5345 if (!intel_crtc->active) {
5346 domains = get_crtc_power_domains(crtc);
5347 for_each_power_domain(domain, domains)
5348 intel_display_power_get(dev_priv, domain);
5349 intel_crtc->enabled_power_domains = domains;
5351 dev_priv->display.crtc_enable(crtc);
5354 if (intel_crtc->active) {
5355 dev_priv->display.crtc_disable(crtc);
5357 domains = intel_crtc->enabled_power_domains;
5358 for_each_power_domain(domain, domains)
5359 intel_display_power_put(dev_priv, domain);
5360 intel_crtc->enabled_power_domains = 0;
5366 * Sets the power management mode of the pipe and plane.
5368 void intel_crtc_update_dpms(struct drm_crtc *crtc)
5370 struct drm_device *dev = crtc->dev;
5371 struct intel_encoder *intel_encoder;
5372 bool enable = false;
5374 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
5375 enable |= intel_encoder->connectors_active;
5377 intel_crtc_control(crtc, enable);
5380 static void intel_crtc_disable(struct drm_crtc *crtc)
5382 struct drm_device *dev = crtc->dev;
5383 struct drm_connector *connector;
5384 struct drm_i915_private *dev_priv = dev->dev_private;
5386 /* crtc should still be enabled when we disable it. */
5387 WARN_ON(!crtc->state->enable);
5389 dev_priv->display.crtc_disable(crtc);
5390 dev_priv->display.off(crtc);
5392 crtc->primary->funcs->disable_plane(crtc->primary);
5394 /* Update computed state. */
5395 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
5396 if (!connector->encoder || !connector->encoder->crtc)
5399 if (connector->encoder->crtc != crtc)
5402 connector->dpms = DRM_MODE_DPMS_OFF;
5403 to_intel_encoder(connector->encoder)->connectors_active = false;
5407 void intel_encoder_destroy(struct drm_encoder *encoder)
5409 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
5411 drm_encoder_cleanup(encoder);
5412 kfree(intel_encoder);
5415 /* Simple dpms helper for encoders with just one connector, no cloning and only
5416 * one kind of off state. It clamps all !ON modes to fully OFF and changes the
5417 * state of the entire output pipe. */
5418 static void intel_encoder_dpms(struct intel_encoder *encoder, int mode)
5420 if (mode == DRM_MODE_DPMS_ON) {
5421 encoder->connectors_active = true;
5423 intel_crtc_update_dpms(encoder->base.crtc);
5425 encoder->connectors_active = false;
5427 intel_crtc_update_dpms(encoder->base.crtc);
5431 /* Cross check the actual hw state with our own modeset state tracking (and it's
5432 * internal consistency). */
5433 static void intel_connector_check_state(struct intel_connector *connector)
5435 if (connector->get_hw_state(connector)) {
5436 struct intel_encoder *encoder = connector->encoder;
5437 struct drm_crtc *crtc;
5438 bool encoder_enabled;
5441 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
5442 connector->base.base.id,
5443 connector->base.name);
5445 /* there is no real hw state for MST connectors */
5446 if (connector->mst_port)
5449 I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
5450 "wrong connector dpms state\n");
5451 I915_STATE_WARN(connector->base.encoder != &encoder->base,
5452 "active connector not linked to encoder\n");
5455 I915_STATE_WARN(!encoder->connectors_active,
5456 "encoder->connectors_active not set\n");
5458 encoder_enabled = encoder->get_hw_state(encoder, &pipe);
5459 I915_STATE_WARN(!encoder_enabled, "encoder not enabled\n");
5460 if (I915_STATE_WARN_ON(!encoder->base.crtc))
5463 crtc = encoder->base.crtc;
5465 I915_STATE_WARN(!crtc->state->enable,
5466 "crtc not enabled\n");
5467 I915_STATE_WARN(!to_intel_crtc(crtc)->active, "crtc not active\n");
5468 I915_STATE_WARN(pipe != to_intel_crtc(crtc)->pipe,
5469 "encoder active on the wrong pipe\n");
5474 /* Even simpler default implementation, if there's really no special case to
5476 void intel_connector_dpms(struct drm_connector *connector, int mode)
5478 /* All the simple cases only support two dpms states. */
5479 if (mode != DRM_MODE_DPMS_ON)
5480 mode = DRM_MODE_DPMS_OFF;
5482 if (mode == connector->dpms)
5485 connector->dpms = mode;
5487 /* Only need to change hw state when actually enabled */
5488 if (connector->encoder)
5489 intel_encoder_dpms(to_intel_encoder(connector->encoder), mode);
5491 intel_modeset_check_state(connector->dev);
5494 /* Simple connector->get_hw_state implementation for encoders that support only
5495 * one connector and no cloning and hence the encoder state determines the state
5496 * of the connector. */
5497 bool intel_connector_get_hw_state(struct intel_connector *connector)
5500 struct intel_encoder *encoder = connector->encoder;
5502 return encoder->get_hw_state(encoder, &pipe);
5505 static bool ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
5506 struct intel_crtc_state *pipe_config)
5508 struct drm_i915_private *dev_priv = dev->dev_private;
5509 struct intel_crtc *pipe_B_crtc =
5510 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_B]);
5512 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
5513 pipe_name(pipe), pipe_config->fdi_lanes);
5514 if (pipe_config->fdi_lanes > 4) {
5515 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
5516 pipe_name(pipe), pipe_config->fdi_lanes);
5520 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
5521 if (pipe_config->fdi_lanes > 2) {
5522 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
5523 pipe_config->fdi_lanes);
5530 if (INTEL_INFO(dev)->num_pipes == 2)
5533 /* Ivybridge 3 pipe is really complicated */
5538 if (dev_priv->pipe_to_crtc_mapping[PIPE_C]->enabled &&
5539 pipe_config->fdi_lanes > 2) {
5540 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
5541 pipe_name(pipe), pipe_config->fdi_lanes);
5546 if (!pipe_has_enabled_pch(pipe_B_crtc) ||
5547 pipe_B_crtc->config->fdi_lanes <= 2) {
5548 if (pipe_config->fdi_lanes > 2) {
5549 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
5550 pipe_name(pipe), pipe_config->fdi_lanes);
5554 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
5564 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
5565 struct intel_crtc_state *pipe_config)
5567 struct drm_device *dev = intel_crtc->base.dev;
5568 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
5569 int lane, link_bw, fdi_dotclock;
5570 bool setup_ok, needs_recompute = false;
5573 /* FDI is a binary signal running at ~2.7GHz, encoding
5574 * each output octet as 10 bits. The actual frequency
5575 * is stored as a divider into a 100MHz clock, and the
5576 * mode pixel clock is stored in units of 1KHz.
5577 * Hence the bw of each lane in terms of the mode signal
5580 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
5582 fdi_dotclock = adjusted_mode->crtc_clock;
5584 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
5585 pipe_config->pipe_bpp);
5587 pipe_config->fdi_lanes = lane;
5589 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
5590 link_bw, &pipe_config->fdi_m_n);
5592 setup_ok = ironlake_check_fdi_lanes(intel_crtc->base.dev,
5593 intel_crtc->pipe, pipe_config);
5594 if (!setup_ok && pipe_config->pipe_bpp > 6*3) {
5595 pipe_config->pipe_bpp -= 2*3;
5596 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
5597 pipe_config->pipe_bpp);
5598 needs_recompute = true;
5599 pipe_config->bw_constrained = true;
5604 if (needs_recompute)
5607 return setup_ok ? 0 : -EINVAL;
5610 static void hsw_compute_ips_config(struct intel_crtc *crtc,
5611 struct intel_crtc_state *pipe_config)
5613 pipe_config->ips_enabled = i915.enable_ips &&
5614 hsw_crtc_supports_ips(crtc) &&
5615 pipe_config->pipe_bpp <= 24;
5618 static int intel_crtc_compute_config(struct intel_crtc *crtc,
5619 struct intel_crtc_state *pipe_config)
5621 struct drm_device *dev = crtc->base.dev;
5622 struct drm_i915_private *dev_priv = dev->dev_private;
5623 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
5625 /* FIXME should check pixel clock limits on all platforms */
5626 if (INTEL_INFO(dev)->gen < 4) {
5628 dev_priv->display.get_display_clock_speed(dev);
5631 * Enable pixel doubling when the dot clock
5632 * is > 90% of the (display) core speed.
5634 * GDG double wide on either pipe,
5635 * otherwise pipe A only.
5637 if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
5638 adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
5640 pipe_config->double_wide = true;
5643 if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
5648 * Pipe horizontal size must be even in:
5650 * - LVDS dual channel mode
5651 * - Double wide pipe
5653 if ((intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS) &&
5654 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
5655 pipe_config->pipe_src_w &= ~1;
5657 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
5658 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
5660 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
5661 adjusted_mode->hsync_start == adjusted_mode->hdisplay)
5664 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)) && pipe_config->pipe_bpp > 10*3) {
5665 pipe_config->pipe_bpp = 10*3; /* 12bpc is gen5+ */
5666 } else if (INTEL_INFO(dev)->gen <= 4 && pipe_config->pipe_bpp > 8*3) {
5667 /* only a 8bpc pipe, with 6bpc dither through the panel fitter
5669 pipe_config->pipe_bpp = 8*3;
5673 hsw_compute_ips_config(crtc, pipe_config);
5675 if (pipe_config->has_pch_encoder)
5676 return ironlake_fdi_compute_config(crtc, pipe_config);
5681 static int valleyview_get_display_clock_speed(struct drm_device *dev)
5683 struct drm_i915_private *dev_priv = dev->dev_private;
5687 /* FIXME: Punit isn't quite ready yet */
5688 if (IS_CHERRYVIEW(dev))
5691 if (dev_priv->hpll_freq == 0)
5692 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
5694 mutex_lock(&dev_priv->dpio_lock);
5695 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
5696 mutex_unlock(&dev_priv->dpio_lock);
5698 divider = val & DISPLAY_FREQUENCY_VALUES;
5700 WARN((val & DISPLAY_FREQUENCY_STATUS) !=
5701 (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
5702 "cdclk change in progress\n");
5704 return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
5707 static int i945_get_display_clock_speed(struct drm_device *dev)
5712 static int i915_get_display_clock_speed(struct drm_device *dev)
5717 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
5722 static int pnv_get_display_clock_speed(struct drm_device *dev)
5726 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
5728 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
5729 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
5731 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
5733 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
5735 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
5738 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
5739 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
5741 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
5746 static int i915gm_get_display_clock_speed(struct drm_device *dev)
5750 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
5752 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
5755 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
5756 case GC_DISPLAY_CLOCK_333_MHZ:
5759 case GC_DISPLAY_CLOCK_190_200_MHZ:
5765 static int i865_get_display_clock_speed(struct drm_device *dev)
5770 static int i855_get_display_clock_speed(struct drm_device *dev)
5773 /* Assume that the hardware is in the high speed state. This
5774 * should be the default.
5776 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
5777 case GC_CLOCK_133_200:
5778 case GC_CLOCK_100_200:
5780 case GC_CLOCK_166_250:
5782 case GC_CLOCK_100_133:
5786 /* Shouldn't happen */
5790 static int i830_get_display_clock_speed(struct drm_device *dev)
5796 intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
5798 while (*num > DATA_LINK_M_N_MASK ||
5799 *den > DATA_LINK_M_N_MASK) {
5805 static void compute_m_n(unsigned int m, unsigned int n,
5806 uint32_t *ret_m, uint32_t *ret_n)
5808 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
5809 *ret_m = div_u64((uint64_t) m * *ret_n, n);
5810 intel_reduce_m_n_ratio(ret_m, ret_n);
5814 intel_link_compute_m_n(int bits_per_pixel, int nlanes,
5815 int pixel_clock, int link_clock,
5816 struct intel_link_m_n *m_n)
5820 compute_m_n(bits_per_pixel * pixel_clock,
5821 link_clock * nlanes * 8,
5822 &m_n->gmch_m, &m_n->gmch_n);
5824 compute_m_n(pixel_clock, link_clock,
5825 &m_n->link_m, &m_n->link_n);
5828 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
5830 if (i915.panel_use_ssc >= 0)
5831 return i915.panel_use_ssc != 0;
5832 return dev_priv->vbt.lvds_use_ssc
5833 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
5836 static int i9xx_get_refclk(struct intel_crtc *crtc, int num_connectors)
5838 struct drm_device *dev = crtc->base.dev;
5839 struct drm_i915_private *dev_priv = dev->dev_private;
5842 if (IS_VALLEYVIEW(dev)) {
5844 } else if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS) &&
5845 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
5846 refclk = dev_priv->vbt.lvds_ssc_freq;
5847 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
5848 } else if (!IS_GEN2(dev)) {
5857 static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
5859 return (1 << dpll->n) << 16 | dpll->m2;
5862 static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
5864 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
5867 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
5868 struct intel_crtc_state *crtc_state,
5869 intel_clock_t *reduced_clock)
5871 struct drm_device *dev = crtc->base.dev;
5874 if (IS_PINEVIEW(dev)) {
5875 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
5877 fp2 = pnv_dpll_compute_fp(reduced_clock);
5879 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
5881 fp2 = i9xx_dpll_compute_fp(reduced_clock);
5884 crtc_state->dpll_hw_state.fp0 = fp;
5886 crtc->lowfreq_avail = false;
5887 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS) &&
5888 reduced_clock && i915.powersave) {
5889 crtc_state->dpll_hw_state.fp1 = fp2;
5890 crtc->lowfreq_avail = true;
5892 crtc_state->dpll_hw_state.fp1 = fp;
5896 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
5902 * PLLB opamp always calibrates to max value of 0x3f, force enable it
5903 * and set it to a reasonable value instead.
5905 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
5906 reg_val &= 0xffffff00;
5907 reg_val |= 0x00000030;
5908 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
5910 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
5911 reg_val &= 0x8cffffff;
5912 reg_val = 0x8c000000;
5913 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
5915 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
5916 reg_val &= 0xffffff00;
5917 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
5919 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
5920 reg_val &= 0x00ffffff;
5921 reg_val |= 0xb0000000;
5922 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
5925 static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
5926 struct intel_link_m_n *m_n)
5928 struct drm_device *dev = crtc->base.dev;
5929 struct drm_i915_private *dev_priv = dev->dev_private;
5930 int pipe = crtc->pipe;
5932 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
5933 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
5934 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
5935 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
5938 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
5939 struct intel_link_m_n *m_n,
5940 struct intel_link_m_n *m2_n2)
5942 struct drm_device *dev = crtc->base.dev;
5943 struct drm_i915_private *dev_priv = dev->dev_private;
5944 int pipe = crtc->pipe;
5945 enum transcoder transcoder = crtc->config->cpu_transcoder;
5947 if (INTEL_INFO(dev)->gen >= 5) {
5948 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
5949 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
5950 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
5951 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
5952 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
5953 * for gen < 8) and if DRRS is supported (to make sure the
5954 * registers are not unnecessarily accessed).
5956 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
5957 crtc->config->has_drrs) {
5958 I915_WRITE(PIPE_DATA_M2(transcoder),
5959 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
5960 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
5961 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
5962 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
5965 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
5966 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
5967 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
5968 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
5972 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
5974 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
5977 dp_m_n = &crtc->config->dp_m_n;
5978 dp_m2_n2 = &crtc->config->dp_m2_n2;
5979 } else if (m_n == M2_N2) {
5982 * M2_N2 registers are not supported. Hence m2_n2 divider value
5983 * needs to be programmed into M1_N1.
5985 dp_m_n = &crtc->config->dp_m2_n2;
5987 DRM_ERROR("Unsupported divider value\n");
5991 if (crtc->config->has_pch_encoder)
5992 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
5994 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
5997 static void vlv_update_pll(struct intel_crtc *crtc,
5998 struct intel_crtc_state *pipe_config)
6003 * Enable DPIO clock input. We should never disable the reference
6004 * clock for pipe B, since VGA hotplug / manual detection depends
6007 dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
6008 DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
6009 /* We should never disable this, set it here for state tracking */
6010 if (crtc->pipe == PIPE_B)
6011 dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
6012 dpll |= DPLL_VCO_ENABLE;
6013 pipe_config->dpll_hw_state.dpll = dpll;
6015 dpll_md = (pipe_config->pixel_multiplier - 1)
6016 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
6017 pipe_config->dpll_hw_state.dpll_md = dpll_md;
6020 static void vlv_prepare_pll(struct intel_crtc *crtc,
6021 const struct intel_crtc_state *pipe_config)
6023 struct drm_device *dev = crtc->base.dev;
6024 struct drm_i915_private *dev_priv = dev->dev_private;
6025 int pipe = crtc->pipe;
6027 u32 bestn, bestm1, bestm2, bestp1, bestp2;
6028 u32 coreclk, reg_val;
6030 mutex_lock(&dev_priv->dpio_lock);
6032 bestn = pipe_config->dpll.n;
6033 bestm1 = pipe_config->dpll.m1;
6034 bestm2 = pipe_config->dpll.m2;
6035 bestp1 = pipe_config->dpll.p1;
6036 bestp2 = pipe_config->dpll.p2;
6038 /* See eDP HDMI DPIO driver vbios notes doc */
6040 /* PLL B needs special handling */
6042 vlv_pllb_recal_opamp(dev_priv, pipe);
6044 /* Set up Tx target for periodic Rcomp update */
6045 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
6047 /* Disable target IRef on PLL */
6048 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
6049 reg_val &= 0x00ffffff;
6050 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
6052 /* Disable fast lock */
6053 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
6055 /* Set idtafcrecal before PLL is enabled */
6056 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
6057 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
6058 mdiv |= ((bestn << DPIO_N_SHIFT));
6059 mdiv |= (1 << DPIO_K_SHIFT);
6062 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
6063 * but we don't support that).
6064 * Note: don't use the DAC post divider as it seems unstable.
6066 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
6067 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
6069 mdiv |= DPIO_ENABLE_CALIBRATION;
6070 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
6072 /* Set HBR and RBR LPF coefficients */
6073 if (pipe_config->port_clock == 162000 ||
6074 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
6075 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
6076 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
6079 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
6082 if (pipe_config->has_dp_encoder) {
6083 /* Use SSC source */
6085 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
6088 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
6090 } else { /* HDMI or VGA */
6091 /* Use bend source */
6093 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
6096 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
6100 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
6101 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
6102 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
6103 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
6104 coreclk |= 0x01000000;
6105 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
6107 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
6108 mutex_unlock(&dev_priv->dpio_lock);
6111 static void chv_update_pll(struct intel_crtc *crtc,
6112 struct intel_crtc_state *pipe_config)
6114 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLOCK_CHV |
6115 DPLL_REFA_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
6117 if (crtc->pipe != PIPE_A)
6118 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
6120 pipe_config->dpll_hw_state.dpll_md =
6121 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
6124 static void chv_prepare_pll(struct intel_crtc *crtc,
6125 const struct intel_crtc_state *pipe_config)
6127 struct drm_device *dev = crtc->base.dev;
6128 struct drm_i915_private *dev_priv = dev->dev_private;
6129 int pipe = crtc->pipe;
6130 int dpll_reg = DPLL(crtc->pipe);
6131 enum dpio_channel port = vlv_pipe_to_channel(pipe);
6132 u32 loopfilter, intcoeff;
6133 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
6136 bestn = pipe_config->dpll.n;
6137 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
6138 bestm1 = pipe_config->dpll.m1;
6139 bestm2 = pipe_config->dpll.m2 >> 22;
6140 bestp1 = pipe_config->dpll.p1;
6141 bestp2 = pipe_config->dpll.p2;
6144 * Enable Refclk and SSC
6146 I915_WRITE(dpll_reg,
6147 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
6149 mutex_lock(&dev_priv->dpio_lock);
6151 /* p1 and p2 divider */
6152 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
6153 5 << DPIO_CHV_S1_DIV_SHIFT |
6154 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
6155 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
6156 1 << DPIO_CHV_K_DIV_SHIFT);
6158 /* Feedback post-divider - m2 */
6159 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
6161 /* Feedback refclk divider - n and m1 */
6162 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
6163 DPIO_CHV_M1_DIV_BY_2 |
6164 1 << DPIO_CHV_N_DIV_SHIFT);
6166 /* M2 fraction division */
6167 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
6169 /* M2 fraction division enable */
6170 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port),
6171 DPIO_CHV_FRAC_DIV_EN |
6172 (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT));
6175 refclk = i9xx_get_refclk(crtc, 0);
6176 loopfilter = 5 << DPIO_CHV_PROP_COEFF_SHIFT |
6177 2 << DPIO_CHV_GAIN_CTRL_SHIFT;
6178 if (refclk == 100000)
6180 else if (refclk == 38400)
6184 loopfilter |= intcoeff << DPIO_CHV_INT_COEFF_SHIFT;
6185 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
6188 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
6189 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
6192 mutex_unlock(&dev_priv->dpio_lock);
6196 * vlv_force_pll_on - forcibly enable just the PLL
6197 * @dev_priv: i915 private structure
6198 * @pipe: pipe PLL to enable
6199 * @dpll: PLL configuration
6201 * Enable the PLL for @pipe using the supplied @dpll config. To be used
6202 * in cases where we need the PLL enabled even when @pipe is not going to
6205 void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
6206 const struct dpll *dpll)
6208 struct intel_crtc *crtc =
6209 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
6210 struct intel_crtc_state pipe_config = {
6211 .pixel_multiplier = 1,
6215 if (IS_CHERRYVIEW(dev)) {
6216 chv_update_pll(crtc, &pipe_config);
6217 chv_prepare_pll(crtc, &pipe_config);
6218 chv_enable_pll(crtc, &pipe_config);
6220 vlv_update_pll(crtc, &pipe_config);
6221 vlv_prepare_pll(crtc, &pipe_config);
6222 vlv_enable_pll(crtc, &pipe_config);
6227 * vlv_force_pll_off - forcibly disable just the PLL
6228 * @dev_priv: i915 private structure
6229 * @pipe: pipe PLL to disable
6231 * Disable the PLL for @pipe. To be used in cases where we need
6232 * the PLL enabled even when @pipe is not going to be enabled.
6234 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
6236 if (IS_CHERRYVIEW(dev))
6237 chv_disable_pll(to_i915(dev), pipe);
6239 vlv_disable_pll(to_i915(dev), pipe);
6242 static void i9xx_update_pll(struct intel_crtc *crtc,
6243 struct intel_crtc_state *crtc_state,
6244 intel_clock_t *reduced_clock,
6247 struct drm_device *dev = crtc->base.dev;
6248 struct drm_i915_private *dev_priv = dev->dev_private;
6251 struct dpll *clock = &crtc_state->dpll;
6253 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
6255 is_sdvo = intel_pipe_will_have_type(crtc, INTEL_OUTPUT_SDVO) ||
6256 intel_pipe_will_have_type(crtc, INTEL_OUTPUT_HDMI);
6258 dpll = DPLL_VGA_MODE_DIS;
6260 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS))
6261 dpll |= DPLLB_MODE_LVDS;
6263 dpll |= DPLLB_MODE_DAC_SERIAL;
6265 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
6266 dpll |= (crtc_state->pixel_multiplier - 1)
6267 << SDVO_MULTIPLIER_SHIFT_HIRES;
6271 dpll |= DPLL_SDVO_HIGH_SPEED;
6273 if (crtc_state->has_dp_encoder)
6274 dpll |= DPLL_SDVO_HIGH_SPEED;
6276 /* compute bitmask from p1 value */
6277 if (IS_PINEVIEW(dev))
6278 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
6280 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
6281 if (IS_G4X(dev) && reduced_clock)
6282 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
6284 switch (clock->p2) {
6286 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
6289 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
6292 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
6295 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
6298 if (INTEL_INFO(dev)->gen >= 4)
6299 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
6301 if (crtc_state->sdvo_tv_clock)
6302 dpll |= PLL_REF_INPUT_TVCLKINBC;
6303 else if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS) &&
6304 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
6305 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
6307 dpll |= PLL_REF_INPUT_DREFCLK;
6309 dpll |= DPLL_VCO_ENABLE;
6310 crtc_state->dpll_hw_state.dpll = dpll;
6312 if (INTEL_INFO(dev)->gen >= 4) {
6313 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
6314 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
6315 crtc_state->dpll_hw_state.dpll_md = dpll_md;
6319 static void i8xx_update_pll(struct intel_crtc *crtc,
6320 struct intel_crtc_state *crtc_state,
6321 intel_clock_t *reduced_clock,
6324 struct drm_device *dev = crtc->base.dev;
6325 struct drm_i915_private *dev_priv = dev->dev_private;
6327 struct dpll *clock = &crtc_state->dpll;
6329 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
6331 dpll = DPLL_VGA_MODE_DIS;
6333 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS)) {
6334 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
6337 dpll |= PLL_P1_DIVIDE_BY_TWO;
6339 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
6341 dpll |= PLL_P2_DIVIDE_BY_4;
6344 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc, INTEL_OUTPUT_DVO))
6345 dpll |= DPLL_DVO_2X_MODE;
6347 if (intel_pipe_will_have_type(crtc, INTEL_OUTPUT_LVDS) &&
6348 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
6349 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
6351 dpll |= PLL_REF_INPUT_DREFCLK;
6353 dpll |= DPLL_VCO_ENABLE;
6354 crtc_state->dpll_hw_state.dpll = dpll;
6357 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
6359 struct drm_device *dev = intel_crtc->base.dev;
6360 struct drm_i915_private *dev_priv = dev->dev_private;
6361 enum pipe pipe = intel_crtc->pipe;
6362 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
6363 struct drm_display_mode *adjusted_mode =
6364 &intel_crtc->config->base.adjusted_mode;
6365 uint32_t crtc_vtotal, crtc_vblank_end;
6368 /* We need to be careful not to changed the adjusted mode, for otherwise
6369 * the hw state checker will get angry at the mismatch. */
6370 crtc_vtotal = adjusted_mode->crtc_vtotal;
6371 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
6373 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
6374 /* the chip adds 2 halflines automatically */
6376 crtc_vblank_end -= 1;
6378 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
6379 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
6381 vsyncshift = adjusted_mode->crtc_hsync_start -
6382 adjusted_mode->crtc_htotal / 2;
6384 vsyncshift += adjusted_mode->crtc_htotal;
6387 if (INTEL_INFO(dev)->gen > 3)
6388 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
6390 I915_WRITE(HTOTAL(cpu_transcoder),
6391 (adjusted_mode->crtc_hdisplay - 1) |
6392 ((adjusted_mode->crtc_htotal - 1) << 16));
6393 I915_WRITE(HBLANK(cpu_transcoder),
6394 (adjusted_mode->crtc_hblank_start - 1) |
6395 ((adjusted_mode->crtc_hblank_end - 1) << 16));
6396 I915_WRITE(HSYNC(cpu_transcoder),
6397 (adjusted_mode->crtc_hsync_start - 1) |
6398 ((adjusted_mode->crtc_hsync_end - 1) << 16));
6400 I915_WRITE(VTOTAL(cpu_transcoder),
6401 (adjusted_mode->crtc_vdisplay - 1) |
6402 ((crtc_vtotal - 1) << 16));
6403 I915_WRITE(VBLANK(cpu_transcoder),
6404 (adjusted_mode->crtc_vblank_start - 1) |
6405 ((crtc_vblank_end - 1) << 16));
6406 I915_WRITE(VSYNC(cpu_transcoder),
6407 (adjusted_mode->crtc_vsync_start - 1) |
6408 ((adjusted_mode->crtc_vsync_end - 1) << 16));
6410 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
6411 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
6412 * documented on the DDI_FUNC_CTL register description, EDP Input Select
6414 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
6415 (pipe == PIPE_B || pipe == PIPE_C))
6416 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
6418 /* pipesrc controls the size that is scaled from, which should
6419 * always be the user's requested size.
6421 I915_WRITE(PIPESRC(pipe),
6422 ((intel_crtc->config->pipe_src_w - 1) << 16) |
6423 (intel_crtc->config->pipe_src_h - 1));
6426 static void intel_get_pipe_timings(struct intel_crtc *crtc,
6427 struct intel_crtc_state *pipe_config)
6429 struct drm_device *dev = crtc->base.dev;
6430 struct drm_i915_private *dev_priv = dev->dev_private;
6431 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
6434 tmp = I915_READ(HTOTAL(cpu_transcoder));
6435 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
6436 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
6437 tmp = I915_READ(HBLANK(cpu_transcoder));
6438 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
6439 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
6440 tmp = I915_READ(HSYNC(cpu_transcoder));
6441 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
6442 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
6444 tmp = I915_READ(VTOTAL(cpu_transcoder));
6445 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
6446 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
6447 tmp = I915_READ(VBLANK(cpu_transcoder));
6448 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
6449 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
6450 tmp = I915_READ(VSYNC(cpu_transcoder));
6451 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
6452 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
6454 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
6455 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
6456 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
6457 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
6460 tmp = I915_READ(PIPESRC(crtc->pipe));
6461 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
6462 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
6464 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
6465 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
6468 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
6469 struct intel_crtc_state *pipe_config)
6471 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
6472 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
6473 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
6474 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
6476 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
6477 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
6478 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
6479 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
6481 mode->flags = pipe_config->base.adjusted_mode.flags;
6483 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
6484 mode->flags |= pipe_config->base.adjusted_mode.flags;
6487 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
6489 struct drm_device *dev = intel_crtc->base.dev;
6490 struct drm_i915_private *dev_priv = dev->dev_private;
6495 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
6496 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
6497 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
6499 if (intel_crtc->config->double_wide)
6500 pipeconf |= PIPECONF_DOUBLE_WIDE;
6502 /* only g4x and later have fancy bpc/dither controls */
6503 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
6504 /* Bspec claims that we can't use dithering for 30bpp pipes. */
6505 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
6506 pipeconf |= PIPECONF_DITHER_EN |
6507 PIPECONF_DITHER_TYPE_SP;
6509 switch (intel_crtc->config->pipe_bpp) {
6511 pipeconf |= PIPECONF_6BPC;
6514 pipeconf |= PIPECONF_8BPC;
6517 pipeconf |= PIPECONF_10BPC;
6520 /* Case prevented by intel_choose_pipe_bpp_dither. */
6525 if (HAS_PIPE_CXSR(dev)) {
6526 if (intel_crtc->lowfreq_avail) {
6527 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
6528 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
6530 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
6534 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
6535 if (INTEL_INFO(dev)->gen < 4 ||
6536 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
6537 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
6539 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
6541 pipeconf |= PIPECONF_PROGRESSIVE;
6543 if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
6544 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
6546 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
6547 POSTING_READ(PIPECONF(intel_crtc->pipe));
6550 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
6551 struct intel_crtc_state *crtc_state)
6553 struct drm_device *dev = crtc->base.dev;
6554 struct drm_i915_private *dev_priv = dev->dev_private;
6555 int refclk, num_connectors = 0;
6556 intel_clock_t clock, reduced_clock;
6557 bool ok, has_reduced_clock = false;
6558 bool is_lvds = false, is_dsi = false;
6559 struct intel_encoder *encoder;
6560 const intel_limit_t *limit;
6562 for_each_intel_encoder(dev, encoder) {
6563 if (encoder->new_crtc != crtc)
6566 switch (encoder->type) {
6567 case INTEL_OUTPUT_LVDS:
6570 case INTEL_OUTPUT_DSI:
6583 if (!crtc_state->clock_set) {
6584 refclk = i9xx_get_refclk(crtc, num_connectors);
6587 * Returns a set of divisors for the desired target clock with
6588 * the given refclk, or FALSE. The returned values represent
6589 * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
6592 limit = intel_limit(crtc, refclk);
6593 ok = dev_priv->display.find_dpll(limit, crtc,
6594 crtc_state->port_clock,
6595 refclk, NULL, &clock);
6597 DRM_ERROR("Couldn't find PLL settings for mode!\n");
6601 if (is_lvds && dev_priv->lvds_downclock_avail) {
6603 * Ensure we match the reduced clock's P to the target
6604 * clock. If the clocks don't match, we can't switch
6605 * the display clock by using the FP0/FP1. In such case
6606 * we will disable the LVDS downclock feature.
6609 dev_priv->display.find_dpll(limit, crtc,
6610 dev_priv->lvds_downclock,
6614 /* Compat-code for transition, will disappear. */
6615 crtc_state->dpll.n = clock.n;
6616 crtc_state->dpll.m1 = clock.m1;
6617 crtc_state->dpll.m2 = clock.m2;
6618 crtc_state->dpll.p1 = clock.p1;
6619 crtc_state->dpll.p2 = clock.p2;
6623 i8xx_update_pll(crtc, crtc_state,
6624 has_reduced_clock ? &reduced_clock : NULL,
6626 } else if (IS_CHERRYVIEW(dev)) {
6627 chv_update_pll(crtc, crtc_state);
6628 } else if (IS_VALLEYVIEW(dev)) {
6629 vlv_update_pll(crtc, crtc_state);
6631 i9xx_update_pll(crtc, crtc_state,
6632 has_reduced_clock ? &reduced_clock : NULL,
6639 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
6640 struct intel_crtc_state *pipe_config)
6642 struct drm_device *dev = crtc->base.dev;
6643 struct drm_i915_private *dev_priv = dev->dev_private;
6646 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
6649 tmp = I915_READ(PFIT_CONTROL);
6650 if (!(tmp & PFIT_ENABLE))
6653 /* Check whether the pfit is attached to our pipe. */
6654 if (INTEL_INFO(dev)->gen < 4) {
6655 if (crtc->pipe != PIPE_B)
6658 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
6662 pipe_config->gmch_pfit.control = tmp;
6663 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
6664 if (INTEL_INFO(dev)->gen < 5)
6665 pipe_config->gmch_pfit.lvds_border_bits =
6666 I915_READ(LVDS) & LVDS_BORDER_ENABLE;
6669 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
6670 struct intel_crtc_state *pipe_config)
6672 struct drm_device *dev = crtc->base.dev;
6673 struct drm_i915_private *dev_priv = dev->dev_private;
6674 int pipe = pipe_config->cpu_transcoder;
6675 intel_clock_t clock;
6677 int refclk = 100000;
6679 /* In case of MIPI DPLL will not even be used */
6680 if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
6683 mutex_lock(&dev_priv->dpio_lock);
6684 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
6685 mutex_unlock(&dev_priv->dpio_lock);
6687 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
6688 clock.m2 = mdiv & DPIO_M2DIV_MASK;
6689 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
6690 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
6691 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
6693 vlv_clock(refclk, &clock);
6695 /* clock.dot is the fast clock */
6696 pipe_config->port_clock = clock.dot / 5;
6700 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
6701 struct intel_initial_plane_config *plane_config)
6703 struct drm_device *dev = crtc->base.dev;
6704 struct drm_i915_private *dev_priv = dev->dev_private;
6705 u32 val, base, offset;
6706 int pipe = crtc->pipe, plane = crtc->plane;
6707 int fourcc, pixel_format;
6709 struct drm_framebuffer *fb;
6710 struct intel_framebuffer *intel_fb;
6712 val = I915_READ(DSPCNTR(plane));
6713 if (!(val & DISPLAY_PLANE_ENABLE))
6716 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
6718 DRM_DEBUG_KMS("failed to alloc fb\n");
6722 fb = &intel_fb->base;
6724 if (INTEL_INFO(dev)->gen >= 4) {
6725 if (val & DISPPLANE_TILED) {
6726 plane_config->tiling = I915_TILING_X;
6727 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
6731 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
6732 fourcc = i9xx_format_to_fourcc(pixel_format);
6733 fb->pixel_format = fourcc;
6734 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
6736 if (INTEL_INFO(dev)->gen >= 4) {
6737 if (plane_config->tiling)
6738 offset = I915_READ(DSPTILEOFF(plane));
6740 offset = I915_READ(DSPLINOFF(plane));
6741 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
6743 base = I915_READ(DSPADDR(plane));
6745 plane_config->base = base;
6747 val = I915_READ(PIPESRC(pipe));
6748 fb->width = ((val >> 16) & 0xfff) + 1;
6749 fb->height = ((val >> 0) & 0xfff) + 1;
6751 val = I915_READ(DSPSTRIDE(pipe));
6752 fb->pitches[0] = val & 0xffffffc0;
6754 aligned_height = intel_fb_align_height(dev, fb->height,
6758 plane_config->size = PAGE_ALIGN(fb->pitches[0] * aligned_height);
6760 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
6761 pipe_name(pipe), plane, fb->width, fb->height,
6762 fb->bits_per_pixel, base, fb->pitches[0],
6763 plane_config->size);
6765 plane_config->fb = intel_fb;
6768 static void chv_crtc_clock_get(struct intel_crtc *crtc,
6769 struct intel_crtc_state *pipe_config)
6771 struct drm_device *dev = crtc->base.dev;
6772 struct drm_i915_private *dev_priv = dev->dev_private;
6773 int pipe = pipe_config->cpu_transcoder;
6774 enum dpio_channel port = vlv_pipe_to_channel(pipe);
6775 intel_clock_t clock;
6776 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2;
6777 int refclk = 100000;
6779 mutex_lock(&dev_priv->dpio_lock);
6780 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
6781 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
6782 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
6783 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
6784 mutex_unlock(&dev_priv->dpio_lock);
6786 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
6787 clock.m2 = ((pll_dw0 & 0xff) << 22) | (pll_dw2 & 0x3fffff);
6788 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
6789 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
6790 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
6792 chv_clock(refclk, &clock);
6794 /* clock.dot is the fast clock */
6795 pipe_config->port_clock = clock.dot / 5;
6798 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
6799 struct intel_crtc_state *pipe_config)
6801 struct drm_device *dev = crtc->base.dev;
6802 struct drm_i915_private *dev_priv = dev->dev_private;
6805 if (!intel_display_power_is_enabled(dev_priv,
6806 POWER_DOMAIN_PIPE(crtc->pipe)))
6809 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
6810 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
6812 tmp = I915_READ(PIPECONF(crtc->pipe));
6813 if (!(tmp & PIPECONF_ENABLE))
6816 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
6817 switch (tmp & PIPECONF_BPC_MASK) {
6819 pipe_config->pipe_bpp = 18;
6822 pipe_config->pipe_bpp = 24;
6824 case PIPECONF_10BPC:
6825 pipe_config->pipe_bpp = 30;
6832 if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
6833 pipe_config->limited_color_range = true;
6835 if (INTEL_INFO(dev)->gen < 4)
6836 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
6838 intel_get_pipe_timings(crtc, pipe_config);
6840 i9xx_get_pfit_config(crtc, pipe_config);
6842 if (INTEL_INFO(dev)->gen >= 4) {
6843 tmp = I915_READ(DPLL_MD(crtc->pipe));
6844 pipe_config->pixel_multiplier =
6845 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
6846 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
6847 pipe_config->dpll_hw_state.dpll_md = tmp;
6848 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
6849 tmp = I915_READ(DPLL(crtc->pipe));
6850 pipe_config->pixel_multiplier =
6851 ((tmp & SDVO_MULTIPLIER_MASK)
6852 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
6854 /* Note that on i915G/GM the pixel multiplier is in the sdvo
6855 * port and will be fixed up in the encoder->get_config
6857 pipe_config->pixel_multiplier = 1;
6859 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
6860 if (!IS_VALLEYVIEW(dev)) {
6862 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
6863 * on 830. Filter it out here so that we don't
6864 * report errors due to that.
6867 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
6869 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
6870 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
6872 /* Mask out read-only status bits. */
6873 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
6874 DPLL_PORTC_READY_MASK |
6875 DPLL_PORTB_READY_MASK);
6878 if (IS_CHERRYVIEW(dev))
6879 chv_crtc_clock_get(crtc, pipe_config);
6880 else if (IS_VALLEYVIEW(dev))
6881 vlv_crtc_clock_get(crtc, pipe_config);
6883 i9xx_crtc_clock_get(crtc, pipe_config);
6888 static void ironlake_init_pch_refclk(struct drm_device *dev)
6890 struct drm_i915_private *dev_priv = dev->dev_private;
6891 struct intel_encoder *encoder;
6893 bool has_lvds = false;
6894 bool has_cpu_edp = false;
6895 bool has_panel = false;
6896 bool has_ck505 = false;
6897 bool can_ssc = false;
6899 /* We need to take the global config into account */
6900 for_each_intel_encoder(dev, encoder) {
6901 switch (encoder->type) {
6902 case INTEL_OUTPUT_LVDS:
6906 case INTEL_OUTPUT_EDP:
6908 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
6916 if (HAS_PCH_IBX(dev)) {
6917 has_ck505 = dev_priv->vbt.display_clock_mode;
6918 can_ssc = has_ck505;
6924 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
6925 has_panel, has_lvds, has_ck505);
6927 /* Ironlake: try to setup display ref clock before DPLL
6928 * enabling. This is only under driver's control after
6929 * PCH B stepping, previous chipset stepping should be
6930 * ignoring this setting.
6932 val = I915_READ(PCH_DREF_CONTROL);
6934 /* As we must carefully and slowly disable/enable each source in turn,
6935 * compute the final state we want first and check if we need to
6936 * make any changes at all.
6939 final &= ~DREF_NONSPREAD_SOURCE_MASK;
6941 final |= DREF_NONSPREAD_CK505_ENABLE;
6943 final |= DREF_NONSPREAD_SOURCE_ENABLE;
6945 final &= ~DREF_SSC_SOURCE_MASK;
6946 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
6947 final &= ~DREF_SSC1_ENABLE;
6950 final |= DREF_SSC_SOURCE_ENABLE;
6952 if (intel_panel_use_ssc(dev_priv) && can_ssc)
6953 final |= DREF_SSC1_ENABLE;
6956 if (intel_panel_use_ssc(dev_priv) && can_ssc)
6957 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
6959 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
6961 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
6963 final |= DREF_SSC_SOURCE_DISABLE;
6964 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
6970 /* Always enable nonspread source */
6971 val &= ~DREF_NONSPREAD_SOURCE_MASK;
6974 val |= DREF_NONSPREAD_CK505_ENABLE;
6976 val |= DREF_NONSPREAD_SOURCE_ENABLE;
6979 val &= ~DREF_SSC_SOURCE_MASK;
6980 val |= DREF_SSC_SOURCE_ENABLE;
6982 /* SSC must be turned on before enabling the CPU output */
6983 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
6984 DRM_DEBUG_KMS("Using SSC on panel\n");
6985 val |= DREF_SSC1_ENABLE;
6987 val &= ~DREF_SSC1_ENABLE;
6989 /* Get SSC going before enabling the outputs */
6990 I915_WRITE(PCH_DREF_CONTROL, val);
6991 POSTING_READ(PCH_DREF_CONTROL);
6994 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
6996 /* Enable CPU source on CPU attached eDP */
6998 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
6999 DRM_DEBUG_KMS("Using SSC on eDP\n");
7000 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
7002 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
7004 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
7006 I915_WRITE(PCH_DREF_CONTROL, val);
7007 POSTING_READ(PCH_DREF_CONTROL);
7010 DRM_DEBUG_KMS("Disabling SSC entirely\n");
7012 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
7014 /* Turn off CPU output */
7015 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
7017 I915_WRITE(PCH_DREF_CONTROL, val);
7018 POSTING_READ(PCH_DREF_CONTROL);
7021 /* Turn off the SSC source */
7022 val &= ~DREF_SSC_SOURCE_MASK;
7023 val |= DREF_SSC_SOURCE_DISABLE;
7026 val &= ~DREF_SSC1_ENABLE;
7028 I915_WRITE(PCH_DREF_CONTROL, val);
7029 POSTING_READ(PCH_DREF_CONTROL);
7033 BUG_ON(val != final);
7036 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
7040 tmp = I915_READ(SOUTH_CHICKEN2);
7041 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
7042 I915_WRITE(SOUTH_CHICKEN2, tmp);
7044 if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
7045 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
7046 DRM_ERROR("FDI mPHY reset assert timeout\n");
7048 tmp = I915_READ(SOUTH_CHICKEN2);
7049 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
7050 I915_WRITE(SOUTH_CHICKEN2, tmp);
7052 if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
7053 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
7054 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
7057 /* WaMPhyProgramming:hsw */
7058 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
7062 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
7063 tmp &= ~(0xFF << 24);
7064 tmp |= (0x12 << 24);
7065 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
7067 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
7069 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
7071 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
7073 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
7075 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
7076 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
7077 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
7079 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
7080 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
7081 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
7083 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
7086 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
7088 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
7091 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
7093 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
7096 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
7098 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
7101 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
7103 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
7104 tmp &= ~(0xFF << 16);
7105 tmp |= (0x1C << 16);
7106 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
7108 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
7109 tmp &= ~(0xFF << 16);
7110 tmp |= (0x1C << 16);
7111 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
7113 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
7115 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
7117 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
7119 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
7121 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
7122 tmp &= ~(0xF << 28);
7124 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
7126 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
7127 tmp &= ~(0xF << 28);
7129 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
7132 /* Implements 3 different sequences from BSpec chapter "Display iCLK
7133 * Programming" based on the parameters passed:
7134 * - Sequence to enable CLKOUT_DP
7135 * - Sequence to enable CLKOUT_DP without spread
7136 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
7138 static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
7141 struct drm_i915_private *dev_priv = dev->dev_private;
7144 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
7146 if (WARN(dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE &&
7147 with_fdi, "LP PCH doesn't have FDI\n"))
7150 mutex_lock(&dev_priv->dpio_lock);
7152 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
7153 tmp &= ~SBI_SSCCTL_DISABLE;
7154 tmp |= SBI_SSCCTL_PATHALT;
7155 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
7160 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
7161 tmp &= ~SBI_SSCCTL_PATHALT;
7162 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
7165 lpt_reset_fdi_mphy(dev_priv);
7166 lpt_program_fdi_mphy(dev_priv);
7170 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
7171 SBI_GEN0 : SBI_DBUFF0;
7172 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
7173 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
7174 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
7176 mutex_unlock(&dev_priv->dpio_lock);
7179 /* Sequence to disable CLKOUT_DP */
7180 static void lpt_disable_clkout_dp(struct drm_device *dev)
7182 struct drm_i915_private *dev_priv = dev->dev_private;
7185 mutex_lock(&dev_priv->dpio_lock);
7187 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
7188 SBI_GEN0 : SBI_DBUFF0;
7189 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
7190 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
7191 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
7193 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
7194 if (!(tmp & SBI_SSCCTL_DISABLE)) {
7195 if (!(tmp & SBI_SSCCTL_PATHALT)) {
7196 tmp |= SBI_SSCCTL_PATHALT;
7197 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
7200 tmp |= SBI_SSCCTL_DISABLE;
7201 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
7204 mutex_unlock(&dev_priv->dpio_lock);
7207 static void lpt_init_pch_refclk(struct drm_device *dev)
7209 struct intel_encoder *encoder;
7210 bool has_vga = false;
7212 for_each_intel_encoder(dev, encoder) {
7213 switch (encoder->type) {
7214 case INTEL_OUTPUT_ANALOG:
7223 lpt_enable_clkout_dp(dev, true, true);
7225 lpt_disable_clkout_dp(dev);
7229 * Initialize reference clocks when the driver loads
7231 void intel_init_pch_refclk(struct drm_device *dev)
7233 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
7234 ironlake_init_pch_refclk(dev);
7235 else if (HAS_PCH_LPT(dev))
7236 lpt_init_pch_refclk(dev);
7239 static int ironlake_get_refclk(struct drm_crtc *crtc)
7241 struct drm_device *dev = crtc->dev;
7242 struct drm_i915_private *dev_priv = dev->dev_private;
7243 struct intel_encoder *encoder;
7244 int num_connectors = 0;
7245 bool is_lvds = false;
7247 for_each_intel_encoder(dev, encoder) {
7248 if (encoder->new_crtc != to_intel_crtc(crtc))
7251 switch (encoder->type) {
7252 case INTEL_OUTPUT_LVDS:
7261 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
7262 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
7263 dev_priv->vbt.lvds_ssc_freq);
7264 return dev_priv->vbt.lvds_ssc_freq;
7270 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
7272 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
7273 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7274 int pipe = intel_crtc->pipe;
7279 switch (intel_crtc->config->pipe_bpp) {
7281 val |= PIPECONF_6BPC;
7284 val |= PIPECONF_8BPC;
7287 val |= PIPECONF_10BPC;
7290 val |= PIPECONF_12BPC;
7293 /* Case prevented by intel_choose_pipe_bpp_dither. */
7297 if (intel_crtc->config->dither)
7298 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
7300 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
7301 val |= PIPECONF_INTERLACED_ILK;
7303 val |= PIPECONF_PROGRESSIVE;
7305 if (intel_crtc->config->limited_color_range)
7306 val |= PIPECONF_COLOR_RANGE_SELECT;
7308 I915_WRITE(PIPECONF(pipe), val);
7309 POSTING_READ(PIPECONF(pipe));
7313 * Set up the pipe CSC unit.
7315 * Currently only full range RGB to limited range RGB conversion
7316 * is supported, but eventually this should handle various
7317 * RGB<->YCbCr scenarios as well.
7319 static void intel_set_pipe_csc(struct drm_crtc *crtc)
7321 struct drm_device *dev = crtc->dev;
7322 struct drm_i915_private *dev_priv = dev->dev_private;
7323 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7324 int pipe = intel_crtc->pipe;
7325 uint16_t coeff = 0x7800; /* 1.0 */
7328 * TODO: Check what kind of values actually come out of the pipe
7329 * with these coeff/postoff values and adjust to get the best
7330 * accuracy. Perhaps we even need to take the bpc value into
7334 if (intel_crtc->config->limited_color_range)
7335 coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
7338 * GY/GU and RY/RU should be the other way around according
7339 * to BSpec, but reality doesn't agree. Just set them up in
7340 * a way that results in the correct picture.
7342 I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
7343 I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
7345 I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
7346 I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
7348 I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
7349 I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
7351 I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
7352 I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
7353 I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
7355 if (INTEL_INFO(dev)->gen > 6) {
7356 uint16_t postoff = 0;
7358 if (intel_crtc->config->limited_color_range)
7359 postoff = (16 * (1 << 12) / 255) & 0x1fff;
7361 I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
7362 I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
7363 I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
7365 I915_WRITE(PIPE_CSC_MODE(pipe), 0);
7367 uint32_t mode = CSC_MODE_YUV_TO_RGB;
7369 if (intel_crtc->config->limited_color_range)
7370 mode |= CSC_BLACK_SCREEN_OFFSET;
7372 I915_WRITE(PIPE_CSC_MODE(pipe), mode);
7376 static void haswell_set_pipeconf(struct drm_crtc *crtc)
7378 struct drm_device *dev = crtc->dev;
7379 struct drm_i915_private *dev_priv = dev->dev_private;
7380 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7381 enum pipe pipe = intel_crtc->pipe;
7382 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
7387 if (IS_HASWELL(dev) && intel_crtc->config->dither)
7388 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
7390 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
7391 val |= PIPECONF_INTERLACED_ILK;
7393 val |= PIPECONF_PROGRESSIVE;
7395 I915_WRITE(PIPECONF(cpu_transcoder), val);
7396 POSTING_READ(PIPECONF(cpu_transcoder));
7398 I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
7399 POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
7401 if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
7404 switch (intel_crtc->config->pipe_bpp) {
7406 val |= PIPEMISC_DITHER_6_BPC;
7409 val |= PIPEMISC_DITHER_8_BPC;
7412 val |= PIPEMISC_DITHER_10_BPC;
7415 val |= PIPEMISC_DITHER_12_BPC;
7418 /* Case prevented by pipe_config_set_bpp. */
7422 if (intel_crtc->config->dither)
7423 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
7425 I915_WRITE(PIPEMISC(pipe), val);
7429 static bool ironlake_compute_clocks(struct drm_crtc *crtc,
7430 struct intel_crtc_state *crtc_state,
7431 intel_clock_t *clock,
7432 bool *has_reduced_clock,
7433 intel_clock_t *reduced_clock)
7435 struct drm_device *dev = crtc->dev;
7436 struct drm_i915_private *dev_priv = dev->dev_private;
7437 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7439 const intel_limit_t *limit;
7440 bool ret, is_lvds = false;
7442 is_lvds = intel_pipe_will_have_type(intel_crtc, INTEL_OUTPUT_LVDS);
7444 refclk = ironlake_get_refclk(crtc);
7447 * Returns a set of divisors for the desired target clock with the given
7448 * refclk, or FALSE. The returned values represent the clock equation:
7449 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
7451 limit = intel_limit(intel_crtc, refclk);
7452 ret = dev_priv->display.find_dpll(limit, intel_crtc,
7453 crtc_state->port_clock,
7454 refclk, NULL, clock);
7458 if (is_lvds && dev_priv->lvds_downclock_avail) {
7460 * Ensure we match the reduced clock's P to the target clock.
7461 * If the clocks don't match, we can't switch the display clock
7462 * by using the FP0/FP1. In such case we will disable the LVDS
7463 * downclock feature.
7465 *has_reduced_clock =
7466 dev_priv->display.find_dpll(limit, intel_crtc,
7467 dev_priv->lvds_downclock,
7475 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
7478 * Account for spread spectrum to avoid
7479 * oversubscribing the link. Max center spread
7480 * is 2.5%; use 5% for safety's sake.
7482 u32 bps = target_clock * bpp * 21 / 20;
7483 return DIV_ROUND_UP(bps, link_bw * 8);
7486 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
7488 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
7491 static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
7492 struct intel_crtc_state *crtc_state,
7494 intel_clock_t *reduced_clock, u32 *fp2)
7496 struct drm_crtc *crtc = &intel_crtc->base;
7497 struct drm_device *dev = crtc->dev;
7498 struct drm_i915_private *dev_priv = dev->dev_private;
7499 struct intel_encoder *intel_encoder;
7501 int factor, num_connectors = 0;
7502 bool is_lvds = false, is_sdvo = false;
7504 for_each_intel_encoder(dev, intel_encoder) {
7505 if (intel_encoder->new_crtc != to_intel_crtc(crtc))
7508 switch (intel_encoder->type) {
7509 case INTEL_OUTPUT_LVDS:
7512 case INTEL_OUTPUT_SDVO:
7513 case INTEL_OUTPUT_HDMI:
7523 /* Enable autotuning of the PLL clock (if permissible) */
7526 if ((intel_panel_use_ssc(dev_priv) &&
7527 dev_priv->vbt.lvds_ssc_freq == 100000) ||
7528 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
7530 } else if (crtc_state->sdvo_tv_clock)
7533 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
7536 if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
7542 dpll |= DPLLB_MODE_LVDS;
7544 dpll |= DPLLB_MODE_DAC_SERIAL;
7546 dpll |= (crtc_state->pixel_multiplier - 1)
7547 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
7550 dpll |= DPLL_SDVO_HIGH_SPEED;
7551 if (crtc_state->has_dp_encoder)
7552 dpll |= DPLL_SDVO_HIGH_SPEED;
7554 /* compute bitmask from p1 value */
7555 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7557 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7559 switch (crtc_state->dpll.p2) {
7561 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7564 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7567 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7570 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7574 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7575 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7577 dpll |= PLL_REF_INPUT_DREFCLK;
7579 return dpll | DPLL_VCO_ENABLE;
7582 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
7583 struct intel_crtc_state *crtc_state)
7585 struct drm_device *dev = crtc->base.dev;
7586 intel_clock_t clock, reduced_clock;
7587 u32 dpll = 0, fp = 0, fp2 = 0;
7588 bool ok, has_reduced_clock = false;
7589 bool is_lvds = false;
7590 struct intel_shared_dpll *pll;
7592 is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
7594 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
7595 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
7597 ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
7598 &has_reduced_clock, &reduced_clock);
7599 if (!ok && !crtc_state->clock_set) {
7600 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7603 /* Compat-code for transition, will disappear. */
7604 if (!crtc_state->clock_set) {
7605 crtc_state->dpll.n = clock.n;
7606 crtc_state->dpll.m1 = clock.m1;
7607 crtc_state->dpll.m2 = clock.m2;
7608 crtc_state->dpll.p1 = clock.p1;
7609 crtc_state->dpll.p2 = clock.p2;
7612 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
7613 if (crtc_state->has_pch_encoder) {
7614 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7615 if (has_reduced_clock)
7616 fp2 = i9xx_dpll_compute_fp(&reduced_clock);
7618 dpll = ironlake_compute_dpll(crtc, crtc_state,
7619 &fp, &reduced_clock,
7620 has_reduced_clock ? &fp2 : NULL);
7622 crtc_state->dpll_hw_state.dpll = dpll;
7623 crtc_state->dpll_hw_state.fp0 = fp;
7624 if (has_reduced_clock)
7625 crtc_state->dpll_hw_state.fp1 = fp2;
7627 crtc_state->dpll_hw_state.fp1 = fp;
7629 pll = intel_get_shared_dpll(crtc, crtc_state);
7631 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
7632 pipe_name(crtc->pipe));
7637 if (is_lvds && has_reduced_clock && i915.powersave)
7638 crtc->lowfreq_avail = true;
7640 crtc->lowfreq_avail = false;
7645 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
7646 struct intel_link_m_n *m_n)
7648 struct drm_device *dev = crtc->base.dev;
7649 struct drm_i915_private *dev_priv = dev->dev_private;
7650 enum pipe pipe = crtc->pipe;
7652 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
7653 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
7654 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
7656 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
7657 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
7658 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
7661 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
7662 enum transcoder transcoder,
7663 struct intel_link_m_n *m_n,
7664 struct intel_link_m_n *m2_n2)
7666 struct drm_device *dev = crtc->base.dev;
7667 struct drm_i915_private *dev_priv = dev->dev_private;
7668 enum pipe pipe = crtc->pipe;
7670 if (INTEL_INFO(dev)->gen >= 5) {
7671 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
7672 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
7673 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
7675 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
7676 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
7677 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
7678 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
7679 * gen < 8) and if DRRS is supported (to make sure the
7680 * registers are not unnecessarily read).
7682 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
7683 crtc->config->has_drrs) {
7684 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
7685 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
7686 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
7688 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
7689 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
7690 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
7693 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
7694 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
7695 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
7697 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
7698 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
7699 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
7703 void intel_dp_get_m_n(struct intel_crtc *crtc,
7704 struct intel_crtc_state *pipe_config)
7706 if (pipe_config->has_pch_encoder)
7707 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
7709 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
7710 &pipe_config->dp_m_n,
7711 &pipe_config->dp_m2_n2);
7714 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
7715 struct intel_crtc_state *pipe_config)
7717 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
7718 &pipe_config->fdi_m_n, NULL);
7721 static void skylake_get_pfit_config(struct intel_crtc *crtc,
7722 struct intel_crtc_state *pipe_config)
7724 struct drm_device *dev = crtc->base.dev;
7725 struct drm_i915_private *dev_priv = dev->dev_private;
7728 tmp = I915_READ(PS_CTL(crtc->pipe));
7730 if (tmp & PS_ENABLE) {
7731 pipe_config->pch_pfit.enabled = true;
7732 pipe_config->pch_pfit.pos = I915_READ(PS_WIN_POS(crtc->pipe));
7733 pipe_config->pch_pfit.size = I915_READ(PS_WIN_SZ(crtc->pipe));
7738 skylake_get_initial_plane_config(struct intel_crtc *crtc,
7739 struct intel_initial_plane_config *plane_config)
7741 struct drm_device *dev = crtc->base.dev;
7742 struct drm_i915_private *dev_priv = dev->dev_private;
7743 u32 val, base, offset, stride_mult;
7744 int pipe = crtc->pipe;
7745 int fourcc, pixel_format;
7747 struct drm_framebuffer *fb;
7748 struct intel_framebuffer *intel_fb;
7750 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
7752 DRM_DEBUG_KMS("failed to alloc fb\n");
7756 fb = &intel_fb->base;
7758 val = I915_READ(PLANE_CTL(pipe, 0));
7759 if (!(val & PLANE_CTL_ENABLE))
7762 if (val & PLANE_CTL_TILED_MASK) {
7763 plane_config->tiling = I915_TILING_X;
7764 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7767 pixel_format = val & PLANE_CTL_FORMAT_MASK;
7768 fourcc = skl_format_to_fourcc(pixel_format,
7769 val & PLANE_CTL_ORDER_RGBX,
7770 val & PLANE_CTL_ALPHA_MASK);
7771 fb->pixel_format = fourcc;
7772 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
7774 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
7775 plane_config->base = base;
7777 offset = I915_READ(PLANE_OFFSET(pipe, 0));
7779 val = I915_READ(PLANE_SIZE(pipe, 0));
7780 fb->height = ((val >> 16) & 0xfff) + 1;
7781 fb->width = ((val >> 0) & 0x1fff) + 1;
7783 val = I915_READ(PLANE_STRIDE(pipe, 0));
7784 switch (plane_config->tiling) {
7785 case I915_TILING_NONE:
7792 MISSING_CASE(plane_config->tiling);
7795 fb->pitches[0] = (val & 0x3ff) * stride_mult;
7797 aligned_height = intel_fb_align_height(dev, fb->height,
7801 plane_config->size = ALIGN(fb->pitches[0] * aligned_height, PAGE_SIZE);
7803 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
7804 pipe_name(pipe), fb->width, fb->height,
7805 fb->bits_per_pixel, base, fb->pitches[0],
7806 plane_config->size);
7808 plane_config->fb = intel_fb;
7815 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
7816 struct intel_crtc_state *pipe_config)
7818 struct drm_device *dev = crtc->base.dev;
7819 struct drm_i915_private *dev_priv = dev->dev_private;
7822 tmp = I915_READ(PF_CTL(crtc->pipe));
7824 if (tmp & PF_ENABLE) {
7825 pipe_config->pch_pfit.enabled = true;
7826 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
7827 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
7829 /* We currently do not free assignements of panel fitters on
7830 * ivb/hsw (since we don't use the higher upscaling modes which
7831 * differentiates them) so just WARN about this case for now. */
7833 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
7834 PF_PIPE_SEL_IVB(crtc->pipe));
7840 ironlake_get_initial_plane_config(struct intel_crtc *crtc,
7841 struct intel_initial_plane_config *plane_config)
7843 struct drm_device *dev = crtc->base.dev;
7844 struct drm_i915_private *dev_priv = dev->dev_private;
7845 u32 val, base, offset;
7846 int pipe = crtc->pipe;
7847 int fourcc, pixel_format;
7849 struct drm_framebuffer *fb;
7850 struct intel_framebuffer *intel_fb;
7852 val = I915_READ(DSPCNTR(pipe));
7853 if (!(val & DISPLAY_PLANE_ENABLE))
7856 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
7858 DRM_DEBUG_KMS("failed to alloc fb\n");
7862 fb = &intel_fb->base;
7864 if (INTEL_INFO(dev)->gen >= 4) {
7865 if (val & DISPPLANE_TILED) {
7866 plane_config->tiling = I915_TILING_X;
7867 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7871 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
7872 fourcc = i9xx_format_to_fourcc(pixel_format);
7873 fb->pixel_format = fourcc;
7874 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
7876 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
7877 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
7878 offset = I915_READ(DSPOFFSET(pipe));
7880 if (plane_config->tiling)
7881 offset = I915_READ(DSPTILEOFF(pipe));
7883 offset = I915_READ(DSPLINOFF(pipe));
7885 plane_config->base = base;
7887 val = I915_READ(PIPESRC(pipe));
7888 fb->width = ((val >> 16) & 0xfff) + 1;
7889 fb->height = ((val >> 0) & 0xfff) + 1;
7891 val = I915_READ(DSPSTRIDE(pipe));
7892 fb->pitches[0] = val & 0xffffffc0;
7894 aligned_height = intel_fb_align_height(dev, fb->height,
7898 plane_config->size = PAGE_ALIGN(fb->pitches[0] * aligned_height);
7900 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
7901 pipe_name(pipe), fb->width, fb->height,
7902 fb->bits_per_pixel, base, fb->pitches[0],
7903 plane_config->size);
7905 plane_config->fb = intel_fb;
7908 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
7909 struct intel_crtc_state *pipe_config)
7911 struct drm_device *dev = crtc->base.dev;
7912 struct drm_i915_private *dev_priv = dev->dev_private;
7915 if (!intel_display_power_is_enabled(dev_priv,
7916 POWER_DOMAIN_PIPE(crtc->pipe)))
7919 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
7920 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
7922 tmp = I915_READ(PIPECONF(crtc->pipe));
7923 if (!(tmp & PIPECONF_ENABLE))
7926 switch (tmp & PIPECONF_BPC_MASK) {
7928 pipe_config->pipe_bpp = 18;
7931 pipe_config->pipe_bpp = 24;
7933 case PIPECONF_10BPC:
7934 pipe_config->pipe_bpp = 30;
7936 case PIPECONF_12BPC:
7937 pipe_config->pipe_bpp = 36;
7943 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
7944 pipe_config->limited_color_range = true;
7946 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
7947 struct intel_shared_dpll *pll;
7949 pipe_config->has_pch_encoder = true;
7951 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
7952 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
7953 FDI_DP_PORT_WIDTH_SHIFT) + 1;
7955 ironlake_get_fdi_m_n_config(crtc, pipe_config);
7957 if (HAS_PCH_IBX(dev_priv->dev)) {
7958 pipe_config->shared_dpll =
7959 (enum intel_dpll_id) crtc->pipe;
7961 tmp = I915_READ(PCH_DPLL_SEL);
7962 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
7963 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
7965 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
7968 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
7970 WARN_ON(!pll->get_hw_state(dev_priv, pll,
7971 &pipe_config->dpll_hw_state));
7973 tmp = pipe_config->dpll_hw_state.dpll;
7974 pipe_config->pixel_multiplier =
7975 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
7976 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
7978 ironlake_pch_clock_get(crtc, pipe_config);
7980 pipe_config->pixel_multiplier = 1;
7983 intel_get_pipe_timings(crtc, pipe_config);
7985 ironlake_get_pfit_config(crtc, pipe_config);
7990 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
7992 struct drm_device *dev = dev_priv->dev;
7993 struct intel_crtc *crtc;
7995 for_each_intel_crtc(dev, crtc)
7996 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
7997 pipe_name(crtc->pipe));
7999 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
8000 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
8001 I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
8002 I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
8003 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
8004 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
8005 "CPU PWM1 enabled\n");
8006 if (IS_HASWELL(dev))
8007 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
8008 "CPU PWM2 enabled\n");
8009 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
8010 "PCH PWM1 enabled\n");
8011 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
8012 "Utility pin enabled\n");
8013 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
8016 * In theory we can still leave IRQs enabled, as long as only the HPD
8017 * interrupts remain enabled. We used to check for that, but since it's
8018 * gen-specific and since we only disable LCPLL after we fully disable
8019 * the interrupts, the check below should be enough.
8021 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
8024 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
8026 struct drm_device *dev = dev_priv->dev;
8028 if (IS_HASWELL(dev))
8029 return I915_READ(D_COMP_HSW);
8031 return I915_READ(D_COMP_BDW);
8034 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
8036 struct drm_device *dev = dev_priv->dev;
8038 if (IS_HASWELL(dev)) {
8039 mutex_lock(&dev_priv->rps.hw_lock);
8040 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
8042 DRM_ERROR("Failed to write to D_COMP\n");
8043 mutex_unlock(&dev_priv->rps.hw_lock);
8045 I915_WRITE(D_COMP_BDW, val);
8046 POSTING_READ(D_COMP_BDW);
8051 * This function implements pieces of two sequences from BSpec:
8052 * - Sequence for display software to disable LCPLL
8053 * - Sequence for display software to allow package C8+
8054 * The steps implemented here are just the steps that actually touch the LCPLL
8055 * register. Callers should take care of disabling all the display engine
8056 * functions, doing the mode unset, fixing interrupts, etc.
8058 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
8059 bool switch_to_fclk, bool allow_power_down)
8063 assert_can_disable_lcpll(dev_priv);
8065 val = I915_READ(LCPLL_CTL);
8067 if (switch_to_fclk) {
8068 val |= LCPLL_CD_SOURCE_FCLK;
8069 I915_WRITE(LCPLL_CTL, val);
8071 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
8072 LCPLL_CD_SOURCE_FCLK_DONE, 1))
8073 DRM_ERROR("Switching to FCLK failed\n");
8075 val = I915_READ(LCPLL_CTL);
8078 val |= LCPLL_PLL_DISABLE;
8079 I915_WRITE(LCPLL_CTL, val);
8080 POSTING_READ(LCPLL_CTL);
8082 if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
8083 DRM_ERROR("LCPLL still locked\n");
8085 val = hsw_read_dcomp(dev_priv);
8086 val |= D_COMP_COMP_DISABLE;
8087 hsw_write_dcomp(dev_priv, val);
8090 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
8092 DRM_ERROR("D_COMP RCOMP still in progress\n");
8094 if (allow_power_down) {
8095 val = I915_READ(LCPLL_CTL);
8096 val |= LCPLL_POWER_DOWN_ALLOW;
8097 I915_WRITE(LCPLL_CTL, val);
8098 POSTING_READ(LCPLL_CTL);
8103 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
8106 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
8110 val = I915_READ(LCPLL_CTL);
8112 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
8113 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
8117 * Make sure we're not on PC8 state before disabling PC8, otherwise
8118 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
8120 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
8122 if (val & LCPLL_POWER_DOWN_ALLOW) {
8123 val &= ~LCPLL_POWER_DOWN_ALLOW;
8124 I915_WRITE(LCPLL_CTL, val);
8125 POSTING_READ(LCPLL_CTL);
8128 val = hsw_read_dcomp(dev_priv);
8129 val |= D_COMP_COMP_FORCE;
8130 val &= ~D_COMP_COMP_DISABLE;
8131 hsw_write_dcomp(dev_priv, val);
8133 val = I915_READ(LCPLL_CTL);
8134 val &= ~LCPLL_PLL_DISABLE;
8135 I915_WRITE(LCPLL_CTL, val);
8137 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
8138 DRM_ERROR("LCPLL not locked yet\n");
8140 if (val & LCPLL_CD_SOURCE_FCLK) {
8141 val = I915_READ(LCPLL_CTL);
8142 val &= ~LCPLL_CD_SOURCE_FCLK;
8143 I915_WRITE(LCPLL_CTL, val);
8145 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
8146 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
8147 DRM_ERROR("Switching back to LCPLL failed\n");
8150 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
8154 * Package states C8 and deeper are really deep PC states that can only be
8155 * reached when all the devices on the system allow it, so even if the graphics
8156 * device allows PC8+, it doesn't mean the system will actually get to these
8157 * states. Our driver only allows PC8+ when going into runtime PM.
8159 * The requirements for PC8+ are that all the outputs are disabled, the power
8160 * well is disabled and most interrupts are disabled, and these are also
8161 * requirements for runtime PM. When these conditions are met, we manually do
8162 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
8163 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
8166 * When we really reach PC8 or deeper states (not just when we allow it) we lose
8167 * the state of some registers, so when we come back from PC8+ we need to
8168 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
8169 * need to take care of the registers kept by RC6. Notice that this happens even
8170 * if we don't put the device in PCI D3 state (which is what currently happens
8171 * because of the runtime PM support).
8173 * For more, read "Display Sequences for Package C8" on the hardware
8176 void hsw_enable_pc8(struct drm_i915_private *dev_priv)
8178 struct drm_device *dev = dev_priv->dev;
8181 DRM_DEBUG_KMS("Enabling package C8+\n");
8183 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
8184 val = I915_READ(SOUTH_DSPCLK_GATE_D);
8185 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
8186 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
8189 lpt_disable_clkout_dp(dev);
8190 hsw_disable_lcpll(dev_priv, true, true);
8193 void hsw_disable_pc8(struct drm_i915_private *dev_priv)
8195 struct drm_device *dev = dev_priv->dev;
8198 DRM_DEBUG_KMS("Disabling package C8+\n");
8200 hsw_restore_lcpll(dev_priv);
8201 lpt_init_pch_refclk(dev);
8203 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
8204 val = I915_READ(SOUTH_DSPCLK_GATE_D);
8205 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
8206 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
8209 intel_prepare_ddi(dev);
8212 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
8213 struct intel_crtc_state *crtc_state)
8215 if (!intel_ddi_pll_select(crtc, crtc_state))
8218 crtc->lowfreq_avail = false;
8223 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
8225 struct intel_crtc_state *pipe_config)
8227 u32 temp, dpll_ctl1;
8229 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
8230 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
8232 switch (pipe_config->ddi_pll_sel) {
8235 * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
8236 * of the shared DPLL framework and thus needs to be read out
8239 dpll_ctl1 = I915_READ(DPLL_CTRL1);
8240 pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
8243 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
8246 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
8249 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
8254 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
8256 struct intel_crtc_state *pipe_config)
8258 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
8260 switch (pipe_config->ddi_pll_sel) {
8261 case PORT_CLK_SEL_WRPLL1:
8262 pipe_config->shared_dpll = DPLL_ID_WRPLL1;
8264 case PORT_CLK_SEL_WRPLL2:
8265 pipe_config->shared_dpll = DPLL_ID_WRPLL2;
8270 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
8271 struct intel_crtc_state *pipe_config)
8273 struct drm_device *dev = crtc->base.dev;
8274 struct drm_i915_private *dev_priv = dev->dev_private;
8275 struct intel_shared_dpll *pll;
8279 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
8281 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
8283 if (IS_SKYLAKE(dev))
8284 skylake_get_ddi_pll(dev_priv, port, pipe_config);
8286 haswell_get_ddi_pll(dev_priv, port, pipe_config);
8288 if (pipe_config->shared_dpll >= 0) {
8289 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
8291 WARN_ON(!pll->get_hw_state(dev_priv, pll,
8292 &pipe_config->dpll_hw_state));
8296 * Haswell has only FDI/PCH transcoder A. It is which is connected to
8297 * DDI E. So just check whether this pipe is wired to DDI E and whether
8298 * the PCH transcoder is on.
8300 if (INTEL_INFO(dev)->gen < 9 &&
8301 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
8302 pipe_config->has_pch_encoder = true;
8304 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
8305 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
8306 FDI_DP_PORT_WIDTH_SHIFT) + 1;
8308 ironlake_get_fdi_m_n_config(crtc, pipe_config);
8312 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
8313 struct intel_crtc_state *pipe_config)
8315 struct drm_device *dev = crtc->base.dev;
8316 struct drm_i915_private *dev_priv = dev->dev_private;
8317 enum intel_display_power_domain pfit_domain;
8320 if (!intel_display_power_is_enabled(dev_priv,
8321 POWER_DOMAIN_PIPE(crtc->pipe)))
8324 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8325 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
8327 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
8328 if (tmp & TRANS_DDI_FUNC_ENABLE) {
8329 enum pipe trans_edp_pipe;
8330 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
8332 WARN(1, "unknown pipe linked to edp transcoder\n");
8333 case TRANS_DDI_EDP_INPUT_A_ONOFF:
8334 case TRANS_DDI_EDP_INPUT_A_ON:
8335 trans_edp_pipe = PIPE_A;
8337 case TRANS_DDI_EDP_INPUT_B_ONOFF:
8338 trans_edp_pipe = PIPE_B;
8340 case TRANS_DDI_EDP_INPUT_C_ONOFF:
8341 trans_edp_pipe = PIPE_C;
8345 if (trans_edp_pipe == crtc->pipe)
8346 pipe_config->cpu_transcoder = TRANSCODER_EDP;
8349 if (!intel_display_power_is_enabled(dev_priv,
8350 POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
8353 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
8354 if (!(tmp & PIPECONF_ENABLE))
8357 haswell_get_ddi_port_state(crtc, pipe_config);
8359 intel_get_pipe_timings(crtc, pipe_config);
8361 pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
8362 if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
8363 if (IS_SKYLAKE(dev))
8364 skylake_get_pfit_config(crtc, pipe_config);
8366 ironlake_get_pfit_config(crtc, pipe_config);
8369 if (IS_HASWELL(dev))
8370 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
8371 (I915_READ(IPS_CTL) & IPS_ENABLE);
8373 if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
8374 pipe_config->pixel_multiplier =
8375 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
8377 pipe_config->pixel_multiplier = 1;
8383 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
8385 struct drm_device *dev = crtc->dev;
8386 struct drm_i915_private *dev_priv = dev->dev_private;
8387 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8388 uint32_t cntl = 0, size = 0;
8391 unsigned int width = intel_crtc->cursor_width;
8392 unsigned int height = intel_crtc->cursor_height;
8393 unsigned int stride = roundup_pow_of_two(width) * 4;
8397 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
8408 cntl |= CURSOR_ENABLE |
8409 CURSOR_GAMMA_ENABLE |
8410 CURSOR_FORMAT_ARGB |
8411 CURSOR_STRIDE(stride);
8413 size = (height << 12) | width;
8416 if (intel_crtc->cursor_cntl != 0 &&
8417 (intel_crtc->cursor_base != base ||
8418 intel_crtc->cursor_size != size ||
8419 intel_crtc->cursor_cntl != cntl)) {
8420 /* On these chipsets we can only modify the base/size/stride
8421 * whilst the cursor is disabled.
8423 I915_WRITE(_CURACNTR, 0);
8424 POSTING_READ(_CURACNTR);
8425 intel_crtc->cursor_cntl = 0;
8428 if (intel_crtc->cursor_base != base) {
8429 I915_WRITE(_CURABASE, base);
8430 intel_crtc->cursor_base = base;
8433 if (intel_crtc->cursor_size != size) {
8434 I915_WRITE(CURSIZE, size);
8435 intel_crtc->cursor_size = size;
8438 if (intel_crtc->cursor_cntl != cntl) {
8439 I915_WRITE(_CURACNTR, cntl);
8440 POSTING_READ(_CURACNTR);
8441 intel_crtc->cursor_cntl = cntl;
8445 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
8447 struct drm_device *dev = crtc->dev;
8448 struct drm_i915_private *dev_priv = dev->dev_private;
8449 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8450 int pipe = intel_crtc->pipe;
8455 cntl = MCURSOR_GAMMA_ENABLE;
8456 switch (intel_crtc->cursor_width) {
8458 cntl |= CURSOR_MODE_64_ARGB_AX;
8461 cntl |= CURSOR_MODE_128_ARGB_AX;
8464 cntl |= CURSOR_MODE_256_ARGB_AX;
8467 MISSING_CASE(intel_crtc->cursor_width);
8470 cntl |= pipe << 28; /* Connect to correct pipe */
8472 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
8473 cntl |= CURSOR_PIPE_CSC_ENABLE;
8476 if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
8477 cntl |= CURSOR_ROTATE_180;
8479 if (intel_crtc->cursor_cntl != cntl) {
8480 I915_WRITE(CURCNTR(pipe), cntl);
8481 POSTING_READ(CURCNTR(pipe));
8482 intel_crtc->cursor_cntl = cntl;
8485 /* and commit changes on next vblank */
8486 I915_WRITE(CURBASE(pipe), base);
8487 POSTING_READ(CURBASE(pipe));
8489 intel_crtc->cursor_base = base;
8492 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
8493 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
8496 struct drm_device *dev = crtc->dev;
8497 struct drm_i915_private *dev_priv = dev->dev_private;
8498 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8499 int pipe = intel_crtc->pipe;
8500 int x = crtc->cursor_x;
8501 int y = crtc->cursor_y;
8502 u32 base = 0, pos = 0;
8505 base = intel_crtc->cursor_addr;
8507 if (x >= intel_crtc->config->pipe_src_w)
8510 if (y >= intel_crtc->config->pipe_src_h)
8514 if (x + intel_crtc->cursor_width <= 0)
8517 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
8520 pos |= x << CURSOR_X_SHIFT;
8523 if (y + intel_crtc->cursor_height <= 0)
8526 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
8529 pos |= y << CURSOR_Y_SHIFT;
8531 if (base == 0 && intel_crtc->cursor_base == 0)
8534 I915_WRITE(CURPOS(pipe), pos);
8536 /* ILK+ do this automagically */
8537 if (HAS_GMCH_DISPLAY(dev) &&
8538 crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
8539 base += (intel_crtc->cursor_height *
8540 intel_crtc->cursor_width - 1) * 4;
8543 if (IS_845G(dev) || IS_I865G(dev))
8544 i845_update_cursor(crtc, base);
8546 i9xx_update_cursor(crtc, base);
8549 static bool cursor_size_ok(struct drm_device *dev,
8550 uint32_t width, uint32_t height)
8552 if (width == 0 || height == 0)
8556 * 845g/865g are special in that they are only limited by
8557 * the width of their cursors, the height is arbitrary up to
8558 * the precision of the register. Everything else requires
8559 * square cursors, limited to a few power-of-two sizes.
8561 if (IS_845G(dev) || IS_I865G(dev)) {
8562 if ((width & 63) != 0)
8565 if (width > (IS_845G(dev) ? 64 : 512))
8571 switch (width | height) {
8586 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
8587 u16 *blue, uint32_t start, uint32_t size)
8589 int end = (start + size > 256) ? 256 : start + size, i;
8590 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8592 for (i = start; i < end; i++) {
8593 intel_crtc->lut_r[i] = red[i] >> 8;
8594 intel_crtc->lut_g[i] = green[i] >> 8;
8595 intel_crtc->lut_b[i] = blue[i] >> 8;
8598 intel_crtc_load_lut(crtc);
8601 /* VESA 640x480x72Hz mode to set on the pipe */
8602 static struct drm_display_mode load_detect_mode = {
8603 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
8604 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
8607 struct drm_framebuffer *
8608 __intel_framebuffer_create(struct drm_device *dev,
8609 struct drm_mode_fb_cmd2 *mode_cmd,
8610 struct drm_i915_gem_object *obj)
8612 struct intel_framebuffer *intel_fb;
8615 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
8617 drm_gem_object_unreference(&obj->base);
8618 return ERR_PTR(-ENOMEM);
8621 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
8625 return &intel_fb->base;
8627 drm_gem_object_unreference(&obj->base);
8630 return ERR_PTR(ret);
8633 static struct drm_framebuffer *
8634 intel_framebuffer_create(struct drm_device *dev,
8635 struct drm_mode_fb_cmd2 *mode_cmd,
8636 struct drm_i915_gem_object *obj)
8638 struct drm_framebuffer *fb;
8641 ret = i915_mutex_lock_interruptible(dev);
8643 return ERR_PTR(ret);
8644 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
8645 mutex_unlock(&dev->struct_mutex);
8651 intel_framebuffer_pitch_for_width(int width, int bpp)
8653 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
8654 return ALIGN(pitch, 64);
8658 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
8660 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
8661 return PAGE_ALIGN(pitch * mode->vdisplay);
8664 static struct drm_framebuffer *
8665 intel_framebuffer_create_for_mode(struct drm_device *dev,
8666 struct drm_display_mode *mode,
8669 struct drm_i915_gem_object *obj;
8670 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
8672 obj = i915_gem_alloc_object(dev,
8673 intel_framebuffer_size_for_mode(mode, bpp));
8675 return ERR_PTR(-ENOMEM);
8677 mode_cmd.width = mode->hdisplay;
8678 mode_cmd.height = mode->vdisplay;
8679 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
8681 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
8683 return intel_framebuffer_create(dev, &mode_cmd, obj);
8686 static struct drm_framebuffer *
8687 mode_fits_in_fbdev(struct drm_device *dev,
8688 struct drm_display_mode *mode)
8690 #ifdef CONFIG_DRM_I915_FBDEV
8691 struct drm_i915_private *dev_priv = dev->dev_private;
8692 struct drm_i915_gem_object *obj;
8693 struct drm_framebuffer *fb;
8695 if (!dev_priv->fbdev)
8698 if (!dev_priv->fbdev->fb)
8701 obj = dev_priv->fbdev->fb->obj;
8704 fb = &dev_priv->fbdev->fb->base;
8705 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
8706 fb->bits_per_pixel))
8709 if (obj->base.size < mode->vdisplay * fb->pitches[0])
8718 bool intel_get_load_detect_pipe(struct drm_connector *connector,
8719 struct drm_display_mode *mode,
8720 struct intel_load_detect_pipe *old,
8721 struct drm_modeset_acquire_ctx *ctx)
8723 struct intel_crtc *intel_crtc;
8724 struct intel_encoder *intel_encoder =
8725 intel_attached_encoder(connector);
8726 struct drm_crtc *possible_crtc;
8727 struct drm_encoder *encoder = &intel_encoder->base;
8728 struct drm_crtc *crtc = NULL;
8729 struct drm_device *dev = encoder->dev;
8730 struct drm_framebuffer *fb;
8731 struct drm_mode_config *config = &dev->mode_config;
8734 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
8735 connector->base.id, connector->name,
8736 encoder->base.id, encoder->name);
8739 ret = drm_modeset_lock(&config->connection_mutex, ctx);
8744 * Algorithm gets a little messy:
8746 * - if the connector already has an assigned crtc, use it (but make
8747 * sure it's on first)
8749 * - try to find the first unused crtc that can drive this connector,
8750 * and use that if we find one
8753 /* See if we already have a CRTC for this connector */
8754 if (encoder->crtc) {
8755 crtc = encoder->crtc;
8757 ret = drm_modeset_lock(&crtc->mutex, ctx);
8760 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
8764 old->dpms_mode = connector->dpms;
8765 old->load_detect_temp = false;
8767 /* Make sure the crtc and connector are running */
8768 if (connector->dpms != DRM_MODE_DPMS_ON)
8769 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
8774 /* Find an unused one (if possible) */
8775 for_each_crtc(dev, possible_crtc) {
8777 if (!(encoder->possible_crtcs & (1 << i)))
8779 if (possible_crtc->state->enable)
8781 /* This can occur when applying the pipe A quirk on resume. */
8782 if (to_intel_crtc(possible_crtc)->new_enabled)
8785 crtc = possible_crtc;
8790 * If we didn't find an unused CRTC, don't use any.
8793 DRM_DEBUG_KMS("no pipe available for load-detect\n");
8797 ret = drm_modeset_lock(&crtc->mutex, ctx);
8800 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
8803 intel_encoder->new_crtc = to_intel_crtc(crtc);
8804 to_intel_connector(connector)->new_encoder = intel_encoder;
8806 intel_crtc = to_intel_crtc(crtc);
8807 intel_crtc->new_enabled = true;
8808 intel_crtc->new_config = intel_crtc->config;
8809 old->dpms_mode = connector->dpms;
8810 old->load_detect_temp = true;
8811 old->release_fb = NULL;
8814 mode = &load_detect_mode;
8816 /* We need a framebuffer large enough to accommodate all accesses
8817 * that the plane may generate whilst we perform load detection.
8818 * We can not rely on the fbcon either being present (we get called
8819 * during its initialisation to detect all boot displays, or it may
8820 * not even exist) or that it is large enough to satisfy the
8823 fb = mode_fits_in_fbdev(dev, mode);
8825 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
8826 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
8827 old->release_fb = fb;
8829 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
8831 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
8835 if (intel_set_mode(crtc, mode, 0, 0, fb)) {
8836 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
8837 if (old->release_fb)
8838 old->release_fb->funcs->destroy(old->release_fb);
8842 /* let the connector get through one full cycle before testing */
8843 intel_wait_for_vblank(dev, intel_crtc->pipe);
8847 intel_crtc->new_enabled = crtc->state->enable;
8848 if (intel_crtc->new_enabled)
8849 intel_crtc->new_config = intel_crtc->config;
8851 intel_crtc->new_config = NULL;
8853 if (ret == -EDEADLK) {
8854 drm_modeset_backoff(ctx);
8861 void intel_release_load_detect_pipe(struct drm_connector *connector,
8862 struct intel_load_detect_pipe *old)
8864 struct intel_encoder *intel_encoder =
8865 intel_attached_encoder(connector);
8866 struct drm_encoder *encoder = &intel_encoder->base;
8867 struct drm_crtc *crtc = encoder->crtc;
8868 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8870 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
8871 connector->base.id, connector->name,
8872 encoder->base.id, encoder->name);
8874 if (old->load_detect_temp) {
8875 to_intel_connector(connector)->new_encoder = NULL;
8876 intel_encoder->new_crtc = NULL;
8877 intel_crtc->new_enabled = false;
8878 intel_crtc->new_config = NULL;
8879 intel_set_mode(crtc, NULL, 0, 0, NULL);
8881 if (old->release_fb) {
8882 drm_framebuffer_unregister_private(old->release_fb);
8883 drm_framebuffer_unreference(old->release_fb);
8889 /* Switch crtc and encoder back off if necessary */
8890 if (old->dpms_mode != DRM_MODE_DPMS_ON)
8891 connector->funcs->dpms(connector, old->dpms_mode);
8894 static int i9xx_pll_refclk(struct drm_device *dev,
8895 const struct intel_crtc_state *pipe_config)
8897 struct drm_i915_private *dev_priv = dev->dev_private;
8898 u32 dpll = pipe_config->dpll_hw_state.dpll;
8900 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
8901 return dev_priv->vbt.lvds_ssc_freq;
8902 else if (HAS_PCH_SPLIT(dev))
8904 else if (!IS_GEN2(dev))
8910 /* Returns the clock of the currently programmed mode of the given pipe. */
8911 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
8912 struct intel_crtc_state *pipe_config)
8914 struct drm_device *dev = crtc->base.dev;
8915 struct drm_i915_private *dev_priv = dev->dev_private;
8916 int pipe = pipe_config->cpu_transcoder;
8917 u32 dpll = pipe_config->dpll_hw_state.dpll;
8919 intel_clock_t clock;
8920 int refclk = i9xx_pll_refclk(dev, pipe_config);
8922 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
8923 fp = pipe_config->dpll_hw_state.fp0;
8925 fp = pipe_config->dpll_hw_state.fp1;
8927 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
8928 if (IS_PINEVIEW(dev)) {
8929 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
8930 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
8932 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
8933 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
8936 if (!IS_GEN2(dev)) {
8937 if (IS_PINEVIEW(dev))
8938 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
8939 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
8941 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
8942 DPLL_FPA01_P1_POST_DIV_SHIFT);
8944 switch (dpll & DPLL_MODE_MASK) {
8945 case DPLLB_MODE_DAC_SERIAL:
8946 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
8949 case DPLLB_MODE_LVDS:
8950 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
8954 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
8955 "mode\n", (int)(dpll & DPLL_MODE_MASK));
8959 if (IS_PINEVIEW(dev))
8960 pineview_clock(refclk, &clock);
8962 i9xx_clock(refclk, &clock);
8964 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
8965 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
8968 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
8969 DPLL_FPA01_P1_POST_DIV_SHIFT);
8971 if (lvds & LVDS_CLKB_POWER_UP)
8976 if (dpll & PLL_P1_DIVIDE_BY_TWO)
8979 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
8980 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
8982 if (dpll & PLL_P2_DIVIDE_BY_4)
8988 i9xx_clock(refclk, &clock);
8992 * This value includes pixel_multiplier. We will use
8993 * port_clock to compute adjusted_mode.crtc_clock in the
8994 * encoder's get_config() function.
8996 pipe_config->port_clock = clock.dot;
8999 int intel_dotclock_calculate(int link_freq,
9000 const struct intel_link_m_n *m_n)
9003 * The calculation for the data clock is:
9004 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
9005 * But we want to avoid losing precison if possible, so:
9006 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
9008 * and the link clock is simpler:
9009 * link_clock = (m * link_clock) / n
9015 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
9018 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
9019 struct intel_crtc_state *pipe_config)
9021 struct drm_device *dev = crtc->base.dev;
9023 /* read out port_clock from the DPLL */
9024 i9xx_crtc_clock_get(crtc, pipe_config);
9027 * This value does not include pixel_multiplier.
9028 * We will check that port_clock and adjusted_mode.crtc_clock
9029 * agree once we know their relationship in the encoder's
9030 * get_config() function.
9032 pipe_config->base.adjusted_mode.crtc_clock =
9033 intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
9034 &pipe_config->fdi_m_n);
9037 /** Returns the currently programmed mode of the given pipe. */
9038 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
9039 struct drm_crtc *crtc)
9041 struct drm_i915_private *dev_priv = dev->dev_private;
9042 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9043 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
9044 struct drm_display_mode *mode;
9045 struct intel_crtc_state pipe_config;
9046 int htot = I915_READ(HTOTAL(cpu_transcoder));
9047 int hsync = I915_READ(HSYNC(cpu_transcoder));
9048 int vtot = I915_READ(VTOTAL(cpu_transcoder));
9049 int vsync = I915_READ(VSYNC(cpu_transcoder));
9050 enum pipe pipe = intel_crtc->pipe;
9052 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
9057 * Construct a pipe_config sufficient for getting the clock info
9058 * back out of crtc_clock_get.
9060 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
9061 * to use a real value here instead.
9063 pipe_config.cpu_transcoder = (enum transcoder) pipe;
9064 pipe_config.pixel_multiplier = 1;
9065 pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
9066 pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
9067 pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
9068 i9xx_crtc_clock_get(intel_crtc, &pipe_config);
9070 mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
9071 mode->hdisplay = (htot & 0xffff) + 1;
9072 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
9073 mode->hsync_start = (hsync & 0xffff) + 1;
9074 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
9075 mode->vdisplay = (vtot & 0xffff) + 1;
9076 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
9077 mode->vsync_start = (vsync & 0xffff) + 1;
9078 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
9080 drm_mode_set_name(mode);
9085 static void intel_decrease_pllclock(struct drm_crtc *crtc)
9087 struct drm_device *dev = crtc->dev;
9088 struct drm_i915_private *dev_priv = dev->dev_private;
9089 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9091 if (!HAS_GMCH_DISPLAY(dev))
9094 if (!dev_priv->lvds_downclock_avail)
9098 * Since this is called by a timer, we should never get here in
9101 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
9102 int pipe = intel_crtc->pipe;
9103 int dpll_reg = DPLL(pipe);
9106 DRM_DEBUG_DRIVER("downclocking LVDS\n");
9108 assert_panel_unlocked(dev_priv, pipe);
9110 dpll = I915_READ(dpll_reg);
9111 dpll |= DISPLAY_RATE_SELECT_FPA1;
9112 I915_WRITE(dpll_reg, dpll);
9113 intel_wait_for_vblank(dev, pipe);
9114 dpll = I915_READ(dpll_reg);
9115 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
9116 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
9121 void intel_mark_busy(struct drm_device *dev)
9123 struct drm_i915_private *dev_priv = dev->dev_private;
9125 if (dev_priv->mm.busy)
9128 intel_runtime_pm_get(dev_priv);
9129 i915_update_gfx_val(dev_priv);
9130 dev_priv->mm.busy = true;
9133 void intel_mark_idle(struct drm_device *dev)
9135 struct drm_i915_private *dev_priv = dev->dev_private;
9136 struct drm_crtc *crtc;
9138 if (!dev_priv->mm.busy)
9141 dev_priv->mm.busy = false;
9143 if (!i915.powersave)
9146 for_each_crtc(dev, crtc) {
9147 if (!crtc->primary->fb)
9150 intel_decrease_pllclock(crtc);
9153 if (INTEL_INFO(dev)->gen >= 6)
9154 gen6_rps_idle(dev->dev_private);
9157 intel_runtime_pm_put(dev_priv);
9160 static void intel_crtc_set_state(struct intel_crtc *crtc,
9161 struct intel_crtc_state *crtc_state)
9163 kfree(crtc->config);
9164 crtc->config = crtc_state;
9165 crtc->base.state = &crtc_state->base;
9168 static void intel_crtc_destroy(struct drm_crtc *crtc)
9170 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9171 struct drm_device *dev = crtc->dev;
9172 struct intel_unpin_work *work;
9174 spin_lock_irq(&dev->event_lock);
9175 work = intel_crtc->unpin_work;
9176 intel_crtc->unpin_work = NULL;
9177 spin_unlock_irq(&dev->event_lock);
9180 cancel_work_sync(&work->work);
9184 intel_crtc_set_state(intel_crtc, NULL);
9185 drm_crtc_cleanup(crtc);
9190 static void intel_unpin_work_fn(struct work_struct *__work)
9192 struct intel_unpin_work *work =
9193 container_of(__work, struct intel_unpin_work, work);
9194 struct drm_device *dev = work->crtc->dev;
9195 enum pipe pipe = to_intel_crtc(work->crtc)->pipe;
9197 mutex_lock(&dev->struct_mutex);
9198 intel_unpin_fb_obj(intel_fb_obj(work->old_fb));
9199 drm_gem_object_unreference(&work->pending_flip_obj->base);
9200 drm_framebuffer_unreference(work->old_fb);
9202 intel_fbc_update(dev);
9204 if (work->flip_queued_req)
9205 i915_gem_request_assign(&work->flip_queued_req, NULL);
9206 mutex_unlock(&dev->struct_mutex);
9208 intel_frontbuffer_flip_complete(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
9210 BUG_ON(atomic_read(&to_intel_crtc(work->crtc)->unpin_work_count) == 0);
9211 atomic_dec(&to_intel_crtc(work->crtc)->unpin_work_count);
9216 static void do_intel_finish_page_flip(struct drm_device *dev,
9217 struct drm_crtc *crtc)
9219 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9220 struct intel_unpin_work *work;
9221 unsigned long flags;
9223 /* Ignore early vblank irqs */
9224 if (intel_crtc == NULL)
9228 * This is called both by irq handlers and the reset code (to complete
9229 * lost pageflips) so needs the full irqsave spinlocks.
9231 spin_lock_irqsave(&dev->event_lock, flags);
9232 work = intel_crtc->unpin_work;
9234 /* Ensure we don't miss a work->pending update ... */
9237 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
9238 spin_unlock_irqrestore(&dev->event_lock, flags);
9242 page_flip_completed(intel_crtc);
9244 spin_unlock_irqrestore(&dev->event_lock, flags);
9247 void intel_finish_page_flip(struct drm_device *dev, int pipe)
9249 struct drm_i915_private *dev_priv = dev->dev_private;
9250 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
9252 do_intel_finish_page_flip(dev, crtc);
9255 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
9257 struct drm_i915_private *dev_priv = dev->dev_private;
9258 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
9260 do_intel_finish_page_flip(dev, crtc);
9263 /* Is 'a' after or equal to 'b'? */
9264 static bool g4x_flip_count_after_eq(u32 a, u32 b)
9266 return !((a - b) & 0x80000000);
9269 static bool page_flip_finished(struct intel_crtc *crtc)
9271 struct drm_device *dev = crtc->base.dev;
9272 struct drm_i915_private *dev_priv = dev->dev_private;
9274 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
9275 crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
9279 * The relevant registers doen't exist on pre-ctg.
9280 * As the flip done interrupt doesn't trigger for mmio
9281 * flips on gmch platforms, a flip count check isn't
9282 * really needed there. But since ctg has the registers,
9283 * include it in the check anyway.
9285 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
9289 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
9290 * used the same base address. In that case the mmio flip might
9291 * have completed, but the CS hasn't even executed the flip yet.
9293 * A flip count check isn't enough as the CS might have updated
9294 * the base address just after start of vblank, but before we
9295 * managed to process the interrupt. This means we'd complete the
9298 * Combining both checks should get us a good enough result. It may
9299 * still happen that the CS flip has been executed, but has not
9300 * yet actually completed. But in case the base address is the same
9301 * anyway, we don't really care.
9303 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
9304 crtc->unpin_work->gtt_offset &&
9305 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_GM45(crtc->pipe)),
9306 crtc->unpin_work->flip_count);
9309 void intel_prepare_page_flip(struct drm_device *dev, int plane)
9311 struct drm_i915_private *dev_priv = dev->dev_private;
9312 struct intel_crtc *intel_crtc =
9313 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
9314 unsigned long flags;
9318 * This is called both by irq handlers and the reset code (to complete
9319 * lost pageflips) so needs the full irqsave spinlocks.
9321 * NB: An MMIO update of the plane base pointer will also
9322 * generate a page-flip completion irq, i.e. every modeset
9323 * is also accompanied by a spurious intel_prepare_page_flip().
9325 spin_lock_irqsave(&dev->event_lock, flags);
9326 if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
9327 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
9328 spin_unlock_irqrestore(&dev->event_lock, flags);
9331 static inline void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
9333 /* Ensure that the work item is consistent when activating it ... */
9335 atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
9336 /* and that it is marked active as soon as the irq could fire. */
9340 static int intel_gen2_queue_flip(struct drm_device *dev,
9341 struct drm_crtc *crtc,
9342 struct drm_framebuffer *fb,
9343 struct drm_i915_gem_object *obj,
9344 struct intel_engine_cs *ring,
9347 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9351 ret = intel_ring_begin(ring, 6);
9355 /* Can't queue multiple flips, so wait for the previous
9356 * one to finish before executing the next.
9358 if (intel_crtc->plane)
9359 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
9361 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
9362 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
9363 intel_ring_emit(ring, MI_NOOP);
9364 intel_ring_emit(ring, MI_DISPLAY_FLIP |
9365 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
9366 intel_ring_emit(ring, fb->pitches[0]);
9367 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
9368 intel_ring_emit(ring, 0); /* aux display base address, unused */
9370 intel_mark_page_flip_active(intel_crtc);
9371 __intel_ring_advance(ring);
9375 static int intel_gen3_queue_flip(struct drm_device *dev,
9376 struct drm_crtc *crtc,
9377 struct drm_framebuffer *fb,
9378 struct drm_i915_gem_object *obj,
9379 struct intel_engine_cs *ring,
9382 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9386 ret = intel_ring_begin(ring, 6);
9390 if (intel_crtc->plane)
9391 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
9393 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
9394 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
9395 intel_ring_emit(ring, MI_NOOP);
9396 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
9397 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
9398 intel_ring_emit(ring, fb->pitches[0]);
9399 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
9400 intel_ring_emit(ring, MI_NOOP);
9402 intel_mark_page_flip_active(intel_crtc);
9403 __intel_ring_advance(ring);
9407 static int intel_gen4_queue_flip(struct drm_device *dev,
9408 struct drm_crtc *crtc,
9409 struct drm_framebuffer *fb,
9410 struct drm_i915_gem_object *obj,
9411 struct intel_engine_cs *ring,
9414 struct drm_i915_private *dev_priv = dev->dev_private;
9415 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9416 uint32_t pf, pipesrc;
9419 ret = intel_ring_begin(ring, 4);
9423 /* i965+ uses the linear or tiled offsets from the
9424 * Display Registers (which do not change across a page-flip)
9425 * so we need only reprogram the base address.
9427 intel_ring_emit(ring, MI_DISPLAY_FLIP |
9428 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
9429 intel_ring_emit(ring, fb->pitches[0]);
9430 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
9433 /* XXX Enabling the panel-fitter across page-flip is so far
9434 * untested on non-native modes, so ignore it for now.
9435 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
9438 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
9439 intel_ring_emit(ring, pf | pipesrc);
9441 intel_mark_page_flip_active(intel_crtc);
9442 __intel_ring_advance(ring);
9446 static int intel_gen6_queue_flip(struct drm_device *dev,
9447 struct drm_crtc *crtc,
9448 struct drm_framebuffer *fb,
9449 struct drm_i915_gem_object *obj,
9450 struct intel_engine_cs *ring,
9453 struct drm_i915_private *dev_priv = dev->dev_private;
9454 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9455 uint32_t pf, pipesrc;
9458 ret = intel_ring_begin(ring, 4);
9462 intel_ring_emit(ring, MI_DISPLAY_FLIP |
9463 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
9464 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
9465 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
9467 /* Contrary to the suggestions in the documentation,
9468 * "Enable Panel Fitter" does not seem to be required when page
9469 * flipping with a non-native mode, and worse causes a normal
9471 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
9474 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
9475 intel_ring_emit(ring, pf | pipesrc);
9477 intel_mark_page_flip_active(intel_crtc);
9478 __intel_ring_advance(ring);
9482 static int intel_gen7_queue_flip(struct drm_device *dev,
9483 struct drm_crtc *crtc,
9484 struct drm_framebuffer *fb,
9485 struct drm_i915_gem_object *obj,
9486 struct intel_engine_cs *ring,
9489 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9490 uint32_t plane_bit = 0;
9493 switch (intel_crtc->plane) {
9495 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
9498 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
9501 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
9504 WARN_ONCE(1, "unknown plane in flip command\n");
9509 if (ring->id == RCS) {
9512 * On Gen 8, SRM is now taking an extra dword to accommodate
9513 * 48bits addresses, and we need a NOOP for the batch size to
9521 * BSpec MI_DISPLAY_FLIP for IVB:
9522 * "The full packet must be contained within the same cache line."
9524 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
9525 * cacheline, if we ever start emitting more commands before
9526 * the MI_DISPLAY_FLIP we may need to first emit everything else,
9527 * then do the cacheline alignment, and finally emit the
9530 ret = intel_ring_cacheline_align(ring);
9534 ret = intel_ring_begin(ring, len);
9538 /* Unmask the flip-done completion message. Note that the bspec says that
9539 * we should do this for both the BCS and RCS, and that we must not unmask
9540 * more than one flip event at any time (or ensure that one flip message
9541 * can be sent by waiting for flip-done prior to queueing new flips).
9542 * Experimentation says that BCS works despite DERRMR masking all
9543 * flip-done completion events and that unmasking all planes at once
9544 * for the RCS also doesn't appear to drop events. Setting the DERRMR
9545 * to zero does lead to lockups within MI_DISPLAY_FLIP.
9547 if (ring->id == RCS) {
9548 intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
9549 intel_ring_emit(ring, DERRMR);
9550 intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
9551 DERRMR_PIPEB_PRI_FLIP_DONE |
9552 DERRMR_PIPEC_PRI_FLIP_DONE));
9554 intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8(1) |
9555 MI_SRM_LRM_GLOBAL_GTT);
9557 intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) |
9558 MI_SRM_LRM_GLOBAL_GTT);
9559 intel_ring_emit(ring, DERRMR);
9560 intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
9562 intel_ring_emit(ring, 0);
9563 intel_ring_emit(ring, MI_NOOP);
9567 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
9568 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
9569 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
9570 intel_ring_emit(ring, (MI_NOOP));
9572 intel_mark_page_flip_active(intel_crtc);
9573 __intel_ring_advance(ring);
9577 static bool use_mmio_flip(struct intel_engine_cs *ring,
9578 struct drm_i915_gem_object *obj)
9581 * This is not being used for older platforms, because
9582 * non-availability of flip done interrupt forces us to use
9583 * CS flips. Older platforms derive flip done using some clever
9584 * tricks involving the flip_pending status bits and vblank irqs.
9585 * So using MMIO flips there would disrupt this mechanism.
9591 if (INTEL_INFO(ring->dev)->gen < 5)
9594 if (i915.use_mmio_flip < 0)
9596 else if (i915.use_mmio_flip > 0)
9598 else if (i915.enable_execlists)
9601 return ring != i915_gem_request_get_ring(obj->last_read_req);
9604 static void skl_do_mmio_flip(struct intel_crtc *intel_crtc)
9606 struct drm_device *dev = intel_crtc->base.dev;
9607 struct drm_i915_private *dev_priv = dev->dev_private;
9608 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
9609 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
9610 struct drm_i915_gem_object *obj = intel_fb->obj;
9611 const enum pipe pipe = intel_crtc->pipe;
9614 ctl = I915_READ(PLANE_CTL(pipe, 0));
9615 ctl &= ~PLANE_CTL_TILED_MASK;
9616 if (obj->tiling_mode == I915_TILING_X)
9617 ctl |= PLANE_CTL_TILED_X;
9620 * The stride is either expressed as a multiple of 64 bytes chunks for
9621 * linear buffers or in number of tiles for tiled buffers.
9623 stride = fb->pitches[0] >> 6;
9624 if (obj->tiling_mode == I915_TILING_X)
9625 stride = fb->pitches[0] >> 9; /* X tiles are 512 bytes wide */
9628 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
9629 * PLANE_SURF updates, the update is then guaranteed to be atomic.
9631 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
9632 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
9634 I915_WRITE(PLANE_SURF(pipe, 0), intel_crtc->unpin_work->gtt_offset);
9635 POSTING_READ(PLANE_SURF(pipe, 0));
9638 static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
9640 struct drm_device *dev = intel_crtc->base.dev;
9641 struct drm_i915_private *dev_priv = dev->dev_private;
9642 struct intel_framebuffer *intel_fb =
9643 to_intel_framebuffer(intel_crtc->base.primary->fb);
9644 struct drm_i915_gem_object *obj = intel_fb->obj;
9648 reg = DSPCNTR(intel_crtc->plane);
9649 dspcntr = I915_READ(reg);
9651 if (obj->tiling_mode != I915_TILING_NONE)
9652 dspcntr |= DISPPLANE_TILED;
9654 dspcntr &= ~DISPPLANE_TILED;
9656 I915_WRITE(reg, dspcntr);
9658 I915_WRITE(DSPSURF(intel_crtc->plane),
9659 intel_crtc->unpin_work->gtt_offset);
9660 POSTING_READ(DSPSURF(intel_crtc->plane));
9665 * XXX: This is the temporary way to update the plane registers until we get
9666 * around to using the usual plane update functions for MMIO flips
9668 static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
9670 struct drm_device *dev = intel_crtc->base.dev;
9672 u32 start_vbl_count;
9674 intel_mark_page_flip_active(intel_crtc);
9676 atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
9678 if (INTEL_INFO(dev)->gen >= 9)
9679 skl_do_mmio_flip(intel_crtc);
9681 /* use_mmio_flip() retricts MMIO flips to ilk+ */
9682 ilk_do_mmio_flip(intel_crtc);
9685 intel_pipe_update_end(intel_crtc, start_vbl_count);
9688 static void intel_mmio_flip_work_func(struct work_struct *work)
9690 struct intel_crtc *crtc =
9691 container_of(work, struct intel_crtc, mmio_flip.work);
9692 struct intel_mmio_flip *mmio_flip;
9694 mmio_flip = &crtc->mmio_flip;
9696 WARN_ON(__i915_wait_request(mmio_flip->req,
9697 crtc->reset_counter,
9698 false, NULL, NULL) != 0);
9700 intel_do_mmio_flip(crtc);
9701 if (mmio_flip->req) {
9702 mutex_lock(&crtc->base.dev->struct_mutex);
9703 i915_gem_request_assign(&mmio_flip->req, NULL);
9704 mutex_unlock(&crtc->base.dev->struct_mutex);
9708 static int intel_queue_mmio_flip(struct drm_device *dev,
9709 struct drm_crtc *crtc,
9710 struct drm_framebuffer *fb,
9711 struct drm_i915_gem_object *obj,
9712 struct intel_engine_cs *ring,
9715 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9717 i915_gem_request_assign(&intel_crtc->mmio_flip.req,
9718 obj->last_write_req);
9720 schedule_work(&intel_crtc->mmio_flip.work);
9725 static int intel_default_queue_flip(struct drm_device *dev,
9726 struct drm_crtc *crtc,
9727 struct drm_framebuffer *fb,
9728 struct drm_i915_gem_object *obj,
9729 struct intel_engine_cs *ring,
9735 static bool __intel_pageflip_stall_check(struct drm_device *dev,
9736 struct drm_crtc *crtc)
9738 struct drm_i915_private *dev_priv = dev->dev_private;
9739 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9740 struct intel_unpin_work *work = intel_crtc->unpin_work;
9743 if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
9746 if (!work->enable_stall_check)
9749 if (work->flip_ready_vblank == 0) {
9750 if (work->flip_queued_req &&
9751 !i915_gem_request_completed(work->flip_queued_req, true))
9754 work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
9757 if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
9760 /* Potential stall - if we see that the flip has happened,
9761 * assume a missed interrupt. */
9762 if (INTEL_INFO(dev)->gen >= 4)
9763 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
9765 addr = I915_READ(DSPADDR(intel_crtc->plane));
9767 /* There is a potential issue here with a false positive after a flip
9768 * to the same address. We could address this by checking for a
9769 * non-incrementing frame counter.
9771 return addr == work->gtt_offset;
9774 void intel_check_page_flip(struct drm_device *dev, int pipe)
9776 struct drm_i915_private *dev_priv = dev->dev_private;
9777 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
9778 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9785 spin_lock(&dev->event_lock);
9786 if (intel_crtc->unpin_work && __intel_pageflip_stall_check(dev, crtc)) {
9787 WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
9788 intel_crtc->unpin_work->flip_queued_vblank,
9789 drm_vblank_count(dev, pipe));
9790 page_flip_completed(intel_crtc);
9792 spin_unlock(&dev->event_lock);
9795 static int intel_crtc_page_flip(struct drm_crtc *crtc,
9796 struct drm_framebuffer *fb,
9797 struct drm_pending_vblank_event *event,
9798 uint32_t page_flip_flags)
9800 struct drm_device *dev = crtc->dev;
9801 struct drm_i915_private *dev_priv = dev->dev_private;
9802 struct drm_framebuffer *old_fb = crtc->primary->fb;
9803 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
9804 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9805 struct drm_plane *primary = crtc->primary;
9806 enum pipe pipe = intel_crtc->pipe;
9807 struct intel_unpin_work *work;
9808 struct intel_engine_cs *ring;
9812 * drm_mode_page_flip_ioctl() should already catch this, but double
9813 * check to be safe. In the future we may enable pageflipping from
9814 * a disabled primary plane.
9816 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
9819 /* Can't change pixel format via MI display flips. */
9820 if (fb->pixel_format != crtc->primary->fb->pixel_format)
9824 * TILEOFF/LINOFF registers can't be changed via MI display flips.
9825 * Note that pitch changes could also affect these register.
9827 if (INTEL_INFO(dev)->gen > 3 &&
9828 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
9829 fb->pitches[0] != crtc->primary->fb->pitches[0]))
9832 if (i915_terminally_wedged(&dev_priv->gpu_error))
9835 work = kzalloc(sizeof(*work), GFP_KERNEL);
9839 work->event = event;
9841 work->old_fb = old_fb;
9842 INIT_WORK(&work->work, intel_unpin_work_fn);
9844 ret = drm_crtc_vblank_get(crtc);
9848 /* We borrow the event spin lock for protecting unpin_work */
9849 spin_lock_irq(&dev->event_lock);
9850 if (intel_crtc->unpin_work) {
9851 /* Before declaring the flip queue wedged, check if
9852 * the hardware completed the operation behind our backs.
9854 if (__intel_pageflip_stall_check(dev, crtc)) {
9855 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
9856 page_flip_completed(intel_crtc);
9858 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
9859 spin_unlock_irq(&dev->event_lock);
9861 drm_crtc_vblank_put(crtc);
9866 intel_crtc->unpin_work = work;
9867 spin_unlock_irq(&dev->event_lock);
9869 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
9870 flush_workqueue(dev_priv->wq);
9872 ret = i915_mutex_lock_interruptible(dev);
9876 /* Reference the objects for the scheduled work. */
9877 drm_framebuffer_reference(work->old_fb);
9878 drm_gem_object_reference(&obj->base);
9880 crtc->primary->fb = fb;
9881 update_state_fb(crtc->primary);
9883 work->pending_flip_obj = obj;
9885 atomic_inc(&intel_crtc->unpin_work_count);
9886 intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
9888 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
9889 work->flip_count = I915_READ(PIPE_FLIPCOUNT_GM45(pipe)) + 1;
9891 if (IS_VALLEYVIEW(dev)) {
9892 ring = &dev_priv->ring[BCS];
9893 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
9894 /* vlv: DISPLAY_FLIP fails to change tiling */
9896 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
9897 ring = &dev_priv->ring[BCS];
9898 } else if (INTEL_INFO(dev)->gen >= 7) {
9899 ring = i915_gem_request_get_ring(obj->last_read_req);
9900 if (ring == NULL || ring->id != RCS)
9901 ring = &dev_priv->ring[BCS];
9903 ring = &dev_priv->ring[RCS];
9906 ret = intel_pin_and_fence_fb_obj(crtc->primary, fb, ring);
9908 goto cleanup_pending;
9911 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset;
9913 if (use_mmio_flip(ring, obj)) {
9914 ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
9919 i915_gem_request_assign(&work->flip_queued_req,
9920 obj->last_write_req);
9922 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, ring,
9927 i915_gem_request_assign(&work->flip_queued_req,
9928 intel_ring_get_request(ring));
9931 work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
9932 work->enable_stall_check = true;
9934 i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
9935 INTEL_FRONTBUFFER_PRIMARY(pipe));
9937 intel_fbc_disable(dev);
9938 intel_frontbuffer_flip_prepare(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
9939 mutex_unlock(&dev->struct_mutex);
9941 trace_i915_flip_request(intel_crtc->plane, obj);
9946 intel_unpin_fb_obj(obj);
9948 atomic_dec(&intel_crtc->unpin_work_count);
9949 crtc->primary->fb = old_fb;
9950 update_state_fb(crtc->primary);
9951 drm_framebuffer_unreference(work->old_fb);
9952 drm_gem_object_unreference(&obj->base);
9953 mutex_unlock(&dev->struct_mutex);
9956 spin_lock_irq(&dev->event_lock);
9957 intel_crtc->unpin_work = NULL;
9958 spin_unlock_irq(&dev->event_lock);
9960 drm_crtc_vblank_put(crtc);
9966 ret = intel_plane_restore(primary);
9967 if (ret == 0 && event) {
9968 spin_lock_irq(&dev->event_lock);
9969 drm_send_vblank_event(dev, pipe, event);
9970 spin_unlock_irq(&dev->event_lock);
9976 static struct drm_crtc_helper_funcs intel_helper_funcs = {
9977 .mode_set_base_atomic = intel_pipe_set_base_atomic,
9978 .load_lut = intel_crtc_load_lut,
9979 .atomic_begin = intel_begin_crtc_commit,
9980 .atomic_flush = intel_finish_crtc_commit,
9984 * intel_modeset_update_staged_output_state
9986 * Updates the staged output configuration state, e.g. after we've read out the
9989 static void intel_modeset_update_staged_output_state(struct drm_device *dev)
9991 struct intel_crtc *crtc;
9992 struct intel_encoder *encoder;
9993 struct intel_connector *connector;
9995 list_for_each_entry(connector, &dev->mode_config.connector_list,
9997 connector->new_encoder =
9998 to_intel_encoder(connector->base.encoder);
10001 for_each_intel_encoder(dev, encoder) {
10002 encoder->new_crtc =
10003 to_intel_crtc(encoder->base.crtc);
10006 for_each_intel_crtc(dev, crtc) {
10007 crtc->new_enabled = crtc->base.state->enable;
10009 if (crtc->new_enabled)
10010 crtc->new_config = crtc->config;
10012 crtc->new_config = NULL;
10017 * intel_modeset_commit_output_state
10019 * This function copies the stage display pipe configuration to the real one.
10021 static void intel_modeset_commit_output_state(struct drm_device *dev)
10023 struct intel_crtc *crtc;
10024 struct intel_encoder *encoder;
10025 struct intel_connector *connector;
10027 list_for_each_entry(connector, &dev->mode_config.connector_list,
10029 connector->base.encoder = &connector->new_encoder->base;
10032 for_each_intel_encoder(dev, encoder) {
10033 encoder->base.crtc = &encoder->new_crtc->base;
10036 for_each_intel_crtc(dev, crtc) {
10037 crtc->base.state->enable = crtc->new_enabled;
10038 crtc->base.enabled = crtc->new_enabled;
10043 connected_sink_compute_bpp(struct intel_connector *connector,
10044 struct intel_crtc_state *pipe_config)
10046 int bpp = pipe_config->pipe_bpp;
10048 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
10049 connector->base.base.id,
10050 connector->base.name);
10052 /* Don't use an invalid EDID bpc value */
10053 if (connector->base.display_info.bpc &&
10054 connector->base.display_info.bpc * 3 < bpp) {
10055 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
10056 bpp, connector->base.display_info.bpc*3);
10057 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
10060 /* Clamp bpp to 8 on screens without EDID 1.4 */
10061 if (connector->base.display_info.bpc == 0 && bpp > 24) {
10062 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
10064 pipe_config->pipe_bpp = 24;
10069 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
10070 struct drm_framebuffer *fb,
10071 struct intel_crtc_state *pipe_config)
10073 struct drm_device *dev = crtc->base.dev;
10074 struct intel_connector *connector;
10077 switch (fb->pixel_format) {
10078 case DRM_FORMAT_C8:
10079 bpp = 8*3; /* since we go through a colormap */
10081 case DRM_FORMAT_XRGB1555:
10082 case DRM_FORMAT_ARGB1555:
10083 /* checked in intel_framebuffer_init already */
10084 if (WARN_ON(INTEL_INFO(dev)->gen > 3))
10086 case DRM_FORMAT_RGB565:
10087 bpp = 6*3; /* min is 18bpp */
10089 case DRM_FORMAT_XBGR8888:
10090 case DRM_FORMAT_ABGR8888:
10091 /* checked in intel_framebuffer_init already */
10092 if (WARN_ON(INTEL_INFO(dev)->gen < 4))
10094 case DRM_FORMAT_XRGB8888:
10095 case DRM_FORMAT_ARGB8888:
10098 case DRM_FORMAT_XRGB2101010:
10099 case DRM_FORMAT_ARGB2101010:
10100 case DRM_FORMAT_XBGR2101010:
10101 case DRM_FORMAT_ABGR2101010:
10102 /* checked in intel_framebuffer_init already */
10103 if (WARN_ON(INTEL_INFO(dev)->gen < 4))
10107 /* TODO: gen4+ supports 16 bpc floating point, too. */
10109 DRM_DEBUG_KMS("unsupported depth\n");
10113 pipe_config->pipe_bpp = bpp;
10115 /* Clamp display bpp to EDID value */
10116 list_for_each_entry(connector, &dev->mode_config.connector_list,
10118 if (!connector->new_encoder ||
10119 connector->new_encoder->new_crtc != crtc)
10122 connected_sink_compute_bpp(connector, pipe_config);
10128 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
10130 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
10131 "type: 0x%x flags: 0x%x\n",
10133 mode->crtc_hdisplay, mode->crtc_hsync_start,
10134 mode->crtc_hsync_end, mode->crtc_htotal,
10135 mode->crtc_vdisplay, mode->crtc_vsync_start,
10136 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
10139 static void intel_dump_pipe_config(struct intel_crtc *crtc,
10140 struct intel_crtc_state *pipe_config,
10141 const char *context)
10143 DRM_DEBUG_KMS("[CRTC:%d]%s config for pipe %c\n", crtc->base.base.id,
10144 context, pipe_name(crtc->pipe));
10146 DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
10147 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
10148 pipe_config->pipe_bpp, pipe_config->dither);
10149 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
10150 pipe_config->has_pch_encoder,
10151 pipe_config->fdi_lanes,
10152 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
10153 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
10154 pipe_config->fdi_m_n.tu);
10155 DRM_DEBUG_KMS("dp: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
10156 pipe_config->has_dp_encoder,
10157 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
10158 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
10159 pipe_config->dp_m_n.tu);
10161 DRM_DEBUG_KMS("dp: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
10162 pipe_config->has_dp_encoder,
10163 pipe_config->dp_m2_n2.gmch_m,
10164 pipe_config->dp_m2_n2.gmch_n,
10165 pipe_config->dp_m2_n2.link_m,
10166 pipe_config->dp_m2_n2.link_n,
10167 pipe_config->dp_m2_n2.tu);
10169 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
10170 pipe_config->has_audio,
10171 pipe_config->has_infoframe);
10173 DRM_DEBUG_KMS("requested mode:\n");
10174 drm_mode_debug_printmodeline(&pipe_config->base.mode);
10175 DRM_DEBUG_KMS("adjusted mode:\n");
10176 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
10177 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
10178 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
10179 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
10180 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
10181 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
10182 pipe_config->gmch_pfit.control,
10183 pipe_config->gmch_pfit.pgm_ratios,
10184 pipe_config->gmch_pfit.lvds_border_bits);
10185 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
10186 pipe_config->pch_pfit.pos,
10187 pipe_config->pch_pfit.size,
10188 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
10189 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
10190 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
10193 static bool encoders_cloneable(const struct intel_encoder *a,
10194 const struct intel_encoder *b)
10196 /* masks could be asymmetric, so check both ways */
10197 return a == b || (a->cloneable & (1 << b->type) &&
10198 b->cloneable & (1 << a->type));
10201 static bool check_single_encoder_cloning(struct intel_crtc *crtc,
10202 struct intel_encoder *encoder)
10204 struct drm_device *dev = crtc->base.dev;
10205 struct intel_encoder *source_encoder;
10207 for_each_intel_encoder(dev, source_encoder) {
10208 if (source_encoder->new_crtc != crtc)
10211 if (!encoders_cloneable(encoder, source_encoder))
10218 static bool check_encoder_cloning(struct intel_crtc *crtc)
10220 struct drm_device *dev = crtc->base.dev;
10221 struct intel_encoder *encoder;
10223 for_each_intel_encoder(dev, encoder) {
10224 if (encoder->new_crtc != crtc)
10227 if (!check_single_encoder_cloning(crtc, encoder))
10234 static bool check_digital_port_conflicts(struct drm_device *dev)
10236 struct intel_connector *connector;
10237 unsigned int used_ports = 0;
10240 * Walk the connector list instead of the encoder
10241 * list to detect the problem on ddi platforms
10242 * where there's just one encoder per digital port.
10244 list_for_each_entry(connector,
10245 &dev->mode_config.connector_list, base.head) {
10246 struct intel_encoder *encoder = connector->new_encoder;
10251 WARN_ON(!encoder->new_crtc);
10253 switch (encoder->type) {
10254 unsigned int port_mask;
10255 case INTEL_OUTPUT_UNKNOWN:
10256 if (WARN_ON(!HAS_DDI(dev)))
10258 case INTEL_OUTPUT_DISPLAYPORT:
10259 case INTEL_OUTPUT_HDMI:
10260 case INTEL_OUTPUT_EDP:
10261 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
10263 /* the same port mustn't appear more than once */
10264 if (used_ports & port_mask)
10267 used_ports |= port_mask;
10276 static struct intel_crtc_state *
10277 intel_modeset_pipe_config(struct drm_crtc *crtc,
10278 struct drm_framebuffer *fb,
10279 struct drm_display_mode *mode)
10281 struct drm_device *dev = crtc->dev;
10282 struct intel_encoder *encoder;
10283 struct intel_crtc_state *pipe_config;
10284 int plane_bpp, ret = -EINVAL;
10287 if (!check_encoder_cloning(to_intel_crtc(crtc))) {
10288 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
10289 return ERR_PTR(-EINVAL);
10292 if (!check_digital_port_conflicts(dev)) {
10293 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
10294 return ERR_PTR(-EINVAL);
10297 pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
10299 return ERR_PTR(-ENOMEM);
10301 pipe_config->base.crtc = crtc;
10302 drm_mode_copy(&pipe_config->base.adjusted_mode, mode);
10303 drm_mode_copy(&pipe_config->base.mode, mode);
10305 pipe_config->cpu_transcoder =
10306 (enum transcoder) to_intel_crtc(crtc)->pipe;
10307 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
10310 * Sanitize sync polarity flags based on requested ones. If neither
10311 * positive or negative polarity is requested, treat this as meaning
10312 * negative polarity.
10314 if (!(pipe_config->base.adjusted_mode.flags &
10315 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
10316 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
10318 if (!(pipe_config->base.adjusted_mode.flags &
10319 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
10320 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
10322 /* Compute a starting value for pipe_config->pipe_bpp taking the source
10323 * plane pixel format and any sink constraints into account. Returns the
10324 * source plane bpp so that dithering can be selected on mismatches
10325 * after encoders and crtc also have had their say. */
10326 plane_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
10332 * Determine the real pipe dimensions. Note that stereo modes can
10333 * increase the actual pipe size due to the frame doubling and
10334 * insertion of additional space for blanks between the frame. This
10335 * is stored in the crtc timings. We use the requested mode to do this
10336 * computation to clearly distinguish it from the adjusted mode, which
10337 * can be changed by the connectors in the below retry loop.
10339 drm_crtc_get_hv_timing(&pipe_config->base.mode,
10340 &pipe_config->pipe_src_w,
10341 &pipe_config->pipe_src_h);
10344 /* Ensure the port clock defaults are reset when retrying. */
10345 pipe_config->port_clock = 0;
10346 pipe_config->pixel_multiplier = 1;
10348 /* Fill in default crtc timings, allow encoders to overwrite them. */
10349 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
10350 CRTC_STEREO_DOUBLE);
10352 /* Pass our mode to the connectors and the CRTC to give them a chance to
10353 * adjust it according to limitations or connector properties, and also
10354 * a chance to reject the mode entirely.
10356 for_each_intel_encoder(dev, encoder) {
10358 if (&encoder->new_crtc->base != crtc)
10361 if (!(encoder->compute_config(encoder, pipe_config))) {
10362 DRM_DEBUG_KMS("Encoder config failure\n");
10367 /* Set default port clock if not overwritten by the encoder. Needs to be
10368 * done afterwards in case the encoder adjusts the mode. */
10369 if (!pipe_config->port_clock)
10370 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
10371 * pipe_config->pixel_multiplier;
10373 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
10375 DRM_DEBUG_KMS("CRTC fixup failed\n");
10379 if (ret == RETRY) {
10380 if (WARN(!retry, "loop in pipe configuration computation\n")) {
10385 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
10387 goto encoder_retry;
10390 pipe_config->dither = pipe_config->pipe_bpp != plane_bpp;
10391 DRM_DEBUG_KMS("plane bpp: %i, pipe bpp: %i, dithering: %i\n",
10392 plane_bpp, pipe_config->pipe_bpp, pipe_config->dither);
10394 return pipe_config;
10396 kfree(pipe_config);
10397 return ERR_PTR(ret);
10400 /* Computes which crtcs are affected and sets the relevant bits in the mask. For
10401 * simplicity we use the crtc's pipe number (because it's easier to obtain). */
10403 intel_modeset_affected_pipes(struct drm_crtc *crtc, unsigned *modeset_pipes,
10404 unsigned *prepare_pipes, unsigned *disable_pipes)
10406 struct intel_crtc *intel_crtc;
10407 struct drm_device *dev = crtc->dev;
10408 struct intel_encoder *encoder;
10409 struct intel_connector *connector;
10410 struct drm_crtc *tmp_crtc;
10412 *disable_pipes = *modeset_pipes = *prepare_pipes = 0;
10414 /* Check which crtcs have changed outputs connected to them, these need
10415 * to be part of the prepare_pipes mask. We don't (yet) support global
10416 * modeset across multiple crtcs, so modeset_pipes will only have one
10417 * bit set at most. */
10418 list_for_each_entry(connector, &dev->mode_config.connector_list,
10420 if (connector->base.encoder == &connector->new_encoder->base)
10423 if (connector->base.encoder) {
10424 tmp_crtc = connector->base.encoder->crtc;
10426 *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
10429 if (connector->new_encoder)
10431 1 << connector->new_encoder->new_crtc->pipe;
10434 for_each_intel_encoder(dev, encoder) {
10435 if (encoder->base.crtc == &encoder->new_crtc->base)
10438 if (encoder->base.crtc) {
10439 tmp_crtc = encoder->base.crtc;
10441 *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
10444 if (encoder->new_crtc)
10445 *prepare_pipes |= 1 << encoder->new_crtc->pipe;
10448 /* Check for pipes that will be enabled/disabled ... */
10449 for_each_intel_crtc(dev, intel_crtc) {
10450 if (intel_crtc->base.state->enable == intel_crtc->new_enabled)
10453 if (!intel_crtc->new_enabled)
10454 *disable_pipes |= 1 << intel_crtc->pipe;
10456 *prepare_pipes |= 1 << intel_crtc->pipe;
10460 /* set_mode is also used to update properties on life display pipes. */
10461 intel_crtc = to_intel_crtc(crtc);
10462 if (intel_crtc->new_enabled)
10463 *prepare_pipes |= 1 << intel_crtc->pipe;
10466 * For simplicity do a full modeset on any pipe where the output routing
10467 * changed. We could be more clever, but that would require us to be
10468 * more careful with calling the relevant encoder->mode_set functions.
10470 if (*prepare_pipes)
10471 *modeset_pipes = *prepare_pipes;
10473 /* ... and mask these out. */
10474 *modeset_pipes &= ~(*disable_pipes);
10475 *prepare_pipes &= ~(*disable_pipes);
10478 * HACK: We don't (yet) fully support global modesets. intel_set_config
10479 * obies this rule, but the modeset restore mode of
10480 * intel_modeset_setup_hw_state does not.
10482 *modeset_pipes &= 1 << intel_crtc->pipe;
10483 *prepare_pipes &= 1 << intel_crtc->pipe;
10485 DRM_DEBUG_KMS("set mode pipe masks: modeset: %x, prepare: %x, disable: %x\n",
10486 *modeset_pipes, *prepare_pipes, *disable_pipes);
10489 static bool intel_crtc_in_use(struct drm_crtc *crtc)
10491 struct drm_encoder *encoder;
10492 struct drm_device *dev = crtc->dev;
10494 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
10495 if (encoder->crtc == crtc)
10502 intel_modeset_update_state(struct drm_device *dev, unsigned prepare_pipes)
10504 struct drm_i915_private *dev_priv = dev->dev_private;
10505 struct intel_encoder *intel_encoder;
10506 struct intel_crtc *intel_crtc;
10507 struct drm_connector *connector;
10509 intel_shared_dpll_commit(dev_priv);
10511 for_each_intel_encoder(dev, intel_encoder) {
10512 if (!intel_encoder->base.crtc)
10515 intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
10517 if (prepare_pipes & (1 << intel_crtc->pipe))
10518 intel_encoder->connectors_active = false;
10521 intel_modeset_commit_output_state(dev);
10523 /* Double check state. */
10524 for_each_intel_crtc(dev, intel_crtc) {
10525 WARN_ON(intel_crtc->base.state->enable != intel_crtc_in_use(&intel_crtc->base));
10526 WARN_ON(intel_crtc->new_config &&
10527 intel_crtc->new_config != intel_crtc->config);
10528 WARN_ON(intel_crtc->base.state->enable != !!intel_crtc->new_config);
10531 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
10532 if (!connector->encoder || !connector->encoder->crtc)
10535 intel_crtc = to_intel_crtc(connector->encoder->crtc);
10537 if (prepare_pipes & (1 << intel_crtc->pipe)) {
10538 struct drm_property *dpms_property =
10539 dev->mode_config.dpms_property;
10541 connector->dpms = DRM_MODE_DPMS_ON;
10542 drm_object_property_set_value(&connector->base,
10546 intel_encoder = to_intel_encoder(connector->encoder);
10547 intel_encoder->connectors_active = true;
10553 static bool intel_fuzzy_clock_check(int clock1, int clock2)
10557 if (clock1 == clock2)
10560 if (!clock1 || !clock2)
10563 diff = abs(clock1 - clock2);
10565 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
10571 #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
10572 list_for_each_entry((intel_crtc), \
10573 &(dev)->mode_config.crtc_list, \
10575 if (mask & (1 <<(intel_crtc)->pipe))
10578 intel_pipe_config_compare(struct drm_device *dev,
10579 struct intel_crtc_state *current_config,
10580 struct intel_crtc_state *pipe_config)
10582 #define PIPE_CONF_CHECK_X(name) \
10583 if (current_config->name != pipe_config->name) { \
10584 DRM_ERROR("mismatch in " #name " " \
10585 "(expected 0x%08x, found 0x%08x)\n", \
10586 current_config->name, \
10587 pipe_config->name); \
10591 #define PIPE_CONF_CHECK_I(name) \
10592 if (current_config->name != pipe_config->name) { \
10593 DRM_ERROR("mismatch in " #name " " \
10594 "(expected %i, found %i)\n", \
10595 current_config->name, \
10596 pipe_config->name); \
10600 /* This is required for BDW+ where there is only one set of registers for
10601 * switching between high and low RR.
10602 * This macro can be used whenever a comparison has to be made between one
10603 * hw state and multiple sw state variables.
10605 #define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
10606 if ((current_config->name != pipe_config->name) && \
10607 (current_config->alt_name != pipe_config->name)) { \
10608 DRM_ERROR("mismatch in " #name " " \
10609 "(expected %i or %i, found %i)\n", \
10610 current_config->name, \
10611 current_config->alt_name, \
10612 pipe_config->name); \
10616 #define PIPE_CONF_CHECK_FLAGS(name, mask) \
10617 if ((current_config->name ^ pipe_config->name) & (mask)) { \
10618 DRM_ERROR("mismatch in " #name "(" #mask ") " \
10619 "(expected %i, found %i)\n", \
10620 current_config->name & (mask), \
10621 pipe_config->name & (mask)); \
10625 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
10626 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
10627 DRM_ERROR("mismatch in " #name " " \
10628 "(expected %i, found %i)\n", \
10629 current_config->name, \
10630 pipe_config->name); \
10634 #define PIPE_CONF_QUIRK(quirk) \
10635 ((current_config->quirks | pipe_config->quirks) & (quirk))
10637 PIPE_CONF_CHECK_I(cpu_transcoder);
10639 PIPE_CONF_CHECK_I(has_pch_encoder);
10640 PIPE_CONF_CHECK_I(fdi_lanes);
10641 PIPE_CONF_CHECK_I(fdi_m_n.gmch_m);
10642 PIPE_CONF_CHECK_I(fdi_m_n.gmch_n);
10643 PIPE_CONF_CHECK_I(fdi_m_n.link_m);
10644 PIPE_CONF_CHECK_I(fdi_m_n.link_n);
10645 PIPE_CONF_CHECK_I(fdi_m_n.tu);
10647 PIPE_CONF_CHECK_I(has_dp_encoder);
10649 if (INTEL_INFO(dev)->gen < 8) {
10650 PIPE_CONF_CHECK_I(dp_m_n.gmch_m);
10651 PIPE_CONF_CHECK_I(dp_m_n.gmch_n);
10652 PIPE_CONF_CHECK_I(dp_m_n.link_m);
10653 PIPE_CONF_CHECK_I(dp_m_n.link_n);
10654 PIPE_CONF_CHECK_I(dp_m_n.tu);
10656 if (current_config->has_drrs) {
10657 PIPE_CONF_CHECK_I(dp_m2_n2.gmch_m);
10658 PIPE_CONF_CHECK_I(dp_m2_n2.gmch_n);
10659 PIPE_CONF_CHECK_I(dp_m2_n2.link_m);
10660 PIPE_CONF_CHECK_I(dp_m2_n2.link_n);
10661 PIPE_CONF_CHECK_I(dp_m2_n2.tu);
10664 PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_m, dp_m2_n2.gmch_m);
10665 PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_n, dp_m2_n2.gmch_n);
10666 PIPE_CONF_CHECK_I_ALT(dp_m_n.link_m, dp_m2_n2.link_m);
10667 PIPE_CONF_CHECK_I_ALT(dp_m_n.link_n, dp_m2_n2.link_n);
10668 PIPE_CONF_CHECK_I_ALT(dp_m_n.tu, dp_m2_n2.tu);
10671 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
10672 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
10673 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
10674 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
10675 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
10676 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
10678 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
10679 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
10680 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
10681 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
10682 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
10683 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
10685 PIPE_CONF_CHECK_I(pixel_multiplier);
10686 PIPE_CONF_CHECK_I(has_hdmi_sink);
10687 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
10688 IS_VALLEYVIEW(dev))
10689 PIPE_CONF_CHECK_I(limited_color_range);
10690 PIPE_CONF_CHECK_I(has_infoframe);
10692 PIPE_CONF_CHECK_I(has_audio);
10694 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
10695 DRM_MODE_FLAG_INTERLACE);
10697 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
10698 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
10699 DRM_MODE_FLAG_PHSYNC);
10700 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
10701 DRM_MODE_FLAG_NHSYNC);
10702 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
10703 DRM_MODE_FLAG_PVSYNC);
10704 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
10705 DRM_MODE_FLAG_NVSYNC);
10708 PIPE_CONF_CHECK_I(pipe_src_w);
10709 PIPE_CONF_CHECK_I(pipe_src_h);
10712 * FIXME: BIOS likes to set up a cloned config with lvds+external
10713 * screen. Since we don't yet re-compute the pipe config when moving
10714 * just the lvds port away to another pipe the sw tracking won't match.
10716 * Proper atomic modesets with recomputed global state will fix this.
10717 * Until then just don't check gmch state for inherited modes.
10719 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_INHERITED_MODE)) {
10720 PIPE_CONF_CHECK_I(gmch_pfit.control);
10721 /* pfit ratios are autocomputed by the hw on gen4+ */
10722 if (INTEL_INFO(dev)->gen < 4)
10723 PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
10724 PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits);
10727 PIPE_CONF_CHECK_I(pch_pfit.enabled);
10728 if (current_config->pch_pfit.enabled) {
10729 PIPE_CONF_CHECK_I(pch_pfit.pos);
10730 PIPE_CONF_CHECK_I(pch_pfit.size);
10733 /* BDW+ don't expose a synchronous way to read the state */
10734 if (IS_HASWELL(dev))
10735 PIPE_CONF_CHECK_I(ips_enabled);
10737 PIPE_CONF_CHECK_I(double_wide);
10739 PIPE_CONF_CHECK_X(ddi_pll_sel);
10741 PIPE_CONF_CHECK_I(shared_dpll);
10742 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
10743 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
10744 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
10745 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
10746 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
10747 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
10748 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
10749 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
10751 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
10752 PIPE_CONF_CHECK_I(pipe_bpp);
10754 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
10755 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
10757 #undef PIPE_CONF_CHECK_X
10758 #undef PIPE_CONF_CHECK_I
10759 #undef PIPE_CONF_CHECK_I_ALT
10760 #undef PIPE_CONF_CHECK_FLAGS
10761 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
10762 #undef PIPE_CONF_QUIRK
10767 static void check_wm_state(struct drm_device *dev)
10769 struct drm_i915_private *dev_priv = dev->dev_private;
10770 struct skl_ddb_allocation hw_ddb, *sw_ddb;
10771 struct intel_crtc *intel_crtc;
10774 if (INTEL_INFO(dev)->gen < 9)
10777 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
10778 sw_ddb = &dev_priv->wm.skl_hw.ddb;
10780 for_each_intel_crtc(dev, intel_crtc) {
10781 struct skl_ddb_entry *hw_entry, *sw_entry;
10782 const enum pipe pipe = intel_crtc->pipe;
10784 if (!intel_crtc->active)
10788 for_each_plane(pipe, plane) {
10789 hw_entry = &hw_ddb.plane[pipe][plane];
10790 sw_entry = &sw_ddb->plane[pipe][plane];
10792 if (skl_ddb_entry_equal(hw_entry, sw_entry))
10795 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
10796 "(expected (%u,%u), found (%u,%u))\n",
10797 pipe_name(pipe), plane + 1,
10798 sw_entry->start, sw_entry->end,
10799 hw_entry->start, hw_entry->end);
10803 hw_entry = &hw_ddb.cursor[pipe];
10804 sw_entry = &sw_ddb->cursor[pipe];
10806 if (skl_ddb_entry_equal(hw_entry, sw_entry))
10809 DRM_ERROR("mismatch in DDB state pipe %c cursor "
10810 "(expected (%u,%u), found (%u,%u))\n",
10812 sw_entry->start, sw_entry->end,
10813 hw_entry->start, hw_entry->end);
10818 check_connector_state(struct drm_device *dev)
10820 struct intel_connector *connector;
10822 list_for_each_entry(connector, &dev->mode_config.connector_list,
10824 /* This also checks the encoder/connector hw state with the
10825 * ->get_hw_state callbacks. */
10826 intel_connector_check_state(connector);
10828 I915_STATE_WARN(&connector->new_encoder->base != connector->base.encoder,
10829 "connector's staged encoder doesn't match current encoder\n");
10834 check_encoder_state(struct drm_device *dev)
10836 struct intel_encoder *encoder;
10837 struct intel_connector *connector;
10839 for_each_intel_encoder(dev, encoder) {
10840 bool enabled = false;
10841 bool active = false;
10842 enum pipe pipe, tracked_pipe;
10844 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
10845 encoder->base.base.id,
10846 encoder->base.name);
10848 I915_STATE_WARN(&encoder->new_crtc->base != encoder->base.crtc,
10849 "encoder's stage crtc doesn't match current crtc\n");
10850 I915_STATE_WARN(encoder->connectors_active && !encoder->base.crtc,
10851 "encoder's active_connectors set, but no crtc\n");
10853 list_for_each_entry(connector, &dev->mode_config.connector_list,
10855 if (connector->base.encoder != &encoder->base)
10858 if (connector->base.dpms != DRM_MODE_DPMS_OFF)
10862 * for MST connectors if we unplug the connector is gone
10863 * away but the encoder is still connected to a crtc
10864 * until a modeset happens in response to the hotplug.
10866 if (!enabled && encoder->base.encoder_type == DRM_MODE_ENCODER_DPMST)
10869 I915_STATE_WARN(!!encoder->base.crtc != enabled,
10870 "encoder's enabled state mismatch "
10871 "(expected %i, found %i)\n",
10872 !!encoder->base.crtc, enabled);
10873 I915_STATE_WARN(active && !encoder->base.crtc,
10874 "active encoder with no crtc\n");
10876 I915_STATE_WARN(encoder->connectors_active != active,
10877 "encoder's computed active state doesn't match tracked active state "
10878 "(expected %i, found %i)\n", active, encoder->connectors_active);
10880 active = encoder->get_hw_state(encoder, &pipe);
10881 I915_STATE_WARN(active != encoder->connectors_active,
10882 "encoder's hw state doesn't match sw tracking "
10883 "(expected %i, found %i)\n",
10884 encoder->connectors_active, active);
10886 if (!encoder->base.crtc)
10889 tracked_pipe = to_intel_crtc(encoder->base.crtc)->pipe;
10890 I915_STATE_WARN(active && pipe != tracked_pipe,
10891 "active encoder's pipe doesn't match"
10892 "(expected %i, found %i)\n",
10893 tracked_pipe, pipe);
10899 check_crtc_state(struct drm_device *dev)
10901 struct drm_i915_private *dev_priv = dev->dev_private;
10902 struct intel_crtc *crtc;
10903 struct intel_encoder *encoder;
10904 struct intel_crtc_state pipe_config;
10906 for_each_intel_crtc(dev, crtc) {
10907 bool enabled = false;
10908 bool active = false;
10910 memset(&pipe_config, 0, sizeof(pipe_config));
10912 DRM_DEBUG_KMS("[CRTC:%d]\n",
10913 crtc->base.base.id);
10915 I915_STATE_WARN(crtc->active && !crtc->base.state->enable,
10916 "active crtc, but not enabled in sw tracking\n");
10918 for_each_intel_encoder(dev, encoder) {
10919 if (encoder->base.crtc != &crtc->base)
10922 if (encoder->connectors_active)
10926 I915_STATE_WARN(active != crtc->active,
10927 "crtc's computed active state doesn't match tracked active state "
10928 "(expected %i, found %i)\n", active, crtc->active);
10929 I915_STATE_WARN(enabled != crtc->base.state->enable,
10930 "crtc's computed enabled state doesn't match tracked enabled state "
10931 "(expected %i, found %i)\n", enabled,
10932 crtc->base.state->enable);
10934 active = dev_priv->display.get_pipe_config(crtc,
10937 /* hw state is inconsistent with the pipe quirk */
10938 if ((crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
10939 (crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
10940 active = crtc->active;
10942 for_each_intel_encoder(dev, encoder) {
10944 if (encoder->base.crtc != &crtc->base)
10946 if (encoder->get_hw_state(encoder, &pipe))
10947 encoder->get_config(encoder, &pipe_config);
10950 I915_STATE_WARN(crtc->active != active,
10951 "crtc active state doesn't match with hw state "
10952 "(expected %i, found %i)\n", crtc->active, active);
10955 !intel_pipe_config_compare(dev, crtc->config, &pipe_config)) {
10956 I915_STATE_WARN(1, "pipe state doesn't match!\n");
10957 intel_dump_pipe_config(crtc, &pipe_config,
10959 intel_dump_pipe_config(crtc, crtc->config,
10966 check_shared_dpll_state(struct drm_device *dev)
10968 struct drm_i915_private *dev_priv = dev->dev_private;
10969 struct intel_crtc *crtc;
10970 struct intel_dpll_hw_state dpll_hw_state;
10973 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
10974 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
10975 int enabled_crtcs = 0, active_crtcs = 0;
10978 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
10980 DRM_DEBUG_KMS("%s\n", pll->name);
10982 active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
10984 I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
10985 "more active pll users than references: %i vs %i\n",
10986 pll->active, hweight32(pll->config.crtc_mask));
10987 I915_STATE_WARN(pll->active && !pll->on,
10988 "pll in active use but not on in sw tracking\n");
10989 I915_STATE_WARN(pll->on && !pll->active,
10990 "pll in on but not on in use in sw tracking\n");
10991 I915_STATE_WARN(pll->on != active,
10992 "pll on state mismatch (expected %i, found %i)\n",
10995 for_each_intel_crtc(dev, crtc) {
10996 if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
10998 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
11001 I915_STATE_WARN(pll->active != active_crtcs,
11002 "pll active crtcs mismatch (expected %i, found %i)\n",
11003 pll->active, active_crtcs);
11004 I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
11005 "pll enabled crtcs mismatch (expected %i, found %i)\n",
11006 hweight32(pll->config.crtc_mask), enabled_crtcs);
11008 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
11009 sizeof(dpll_hw_state)),
11010 "pll hw state mismatch\n");
11015 intel_modeset_check_state(struct drm_device *dev)
11017 check_wm_state(dev);
11018 check_connector_state(dev);
11019 check_encoder_state(dev);
11020 check_crtc_state(dev);
11021 check_shared_dpll_state(dev);
11024 void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
11028 * FDI already provided one idea for the dotclock.
11029 * Yell if the encoder disagrees.
11031 WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
11032 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
11033 pipe_config->base.adjusted_mode.crtc_clock, dotclock);
11036 static void update_scanline_offset(struct intel_crtc *crtc)
11038 struct drm_device *dev = crtc->base.dev;
11041 * The scanline counter increments at the leading edge of hsync.
11043 * On most platforms it starts counting from vtotal-1 on the
11044 * first active line. That means the scanline counter value is
11045 * always one less than what we would expect. Ie. just after
11046 * start of vblank, which also occurs at start of hsync (on the
11047 * last active line), the scanline counter will read vblank_start-1.
11049 * On gen2 the scanline counter starts counting from 1 instead
11050 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
11051 * to keep the value positive), instead of adding one.
11053 * On HSW+ the behaviour of the scanline counter depends on the output
11054 * type. For DP ports it behaves like most other platforms, but on HDMI
11055 * there's an extra 1 line difference. So we need to add two instead of
11056 * one to the value.
11058 if (IS_GEN2(dev)) {
11059 const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode;
11062 vtotal = mode->crtc_vtotal;
11063 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
11066 crtc->scanline_offset = vtotal - 1;
11067 } else if (HAS_DDI(dev) &&
11068 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
11069 crtc->scanline_offset = 2;
11071 crtc->scanline_offset = 1;
11074 static struct intel_crtc_state *
11075 intel_modeset_compute_config(struct drm_crtc *crtc,
11076 struct drm_display_mode *mode,
11077 struct drm_framebuffer *fb,
11078 unsigned *modeset_pipes,
11079 unsigned *prepare_pipes,
11080 unsigned *disable_pipes)
11082 struct intel_crtc_state *pipe_config = NULL;
11084 intel_modeset_affected_pipes(crtc, modeset_pipes,
11085 prepare_pipes, disable_pipes);
11087 if ((*modeset_pipes) == 0)
11091 * Note this needs changes when we start tracking multiple modes
11092 * and crtcs. At that point we'll need to compute the whole config
11093 * (i.e. one pipe_config for each crtc) rather than just the one
11096 pipe_config = intel_modeset_pipe_config(crtc, fb, mode);
11097 if (IS_ERR(pipe_config)) {
11100 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
11104 return pipe_config;
11107 static int __intel_set_mode_setup_plls(struct drm_device *dev,
11108 unsigned modeset_pipes,
11109 unsigned disable_pipes)
11111 struct drm_i915_private *dev_priv = to_i915(dev);
11112 unsigned clear_pipes = modeset_pipes | disable_pipes;
11113 struct intel_crtc *intel_crtc;
11116 if (!dev_priv->display.crtc_compute_clock)
11119 ret = intel_shared_dpll_start_config(dev_priv, clear_pipes);
11123 for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
11124 struct intel_crtc_state *state = intel_crtc->new_config;
11125 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
11128 intel_shared_dpll_abort_config(dev_priv);
11137 static int __intel_set_mode(struct drm_crtc *crtc,
11138 struct drm_display_mode *mode,
11139 int x, int y, struct drm_framebuffer *fb,
11140 struct intel_crtc_state *pipe_config,
11141 unsigned modeset_pipes,
11142 unsigned prepare_pipes,
11143 unsigned disable_pipes)
11145 struct drm_device *dev = crtc->dev;
11146 struct drm_i915_private *dev_priv = dev->dev_private;
11147 struct drm_display_mode *saved_mode;
11148 struct intel_crtc *intel_crtc;
11151 saved_mode = kmalloc(sizeof(*saved_mode), GFP_KERNEL);
11155 *saved_mode = crtc->mode;
11158 to_intel_crtc(crtc)->new_config = pipe_config;
11161 * See if the config requires any additional preparation, e.g.
11162 * to adjust global state with pipes off. We need to do this
11163 * here so we can get the modeset_pipe updated config for the new
11164 * mode set on this crtc. For other crtcs we need to use the
11165 * adjusted_mode bits in the crtc directly.
11167 if (IS_VALLEYVIEW(dev)) {
11168 valleyview_modeset_global_pipes(dev, &prepare_pipes);
11170 /* may have added more to prepare_pipes than we should */
11171 prepare_pipes &= ~disable_pipes;
11174 ret = __intel_set_mode_setup_plls(dev, modeset_pipes, disable_pipes);
11178 for_each_intel_crtc_masked(dev, disable_pipes, intel_crtc)
11179 intel_crtc_disable(&intel_crtc->base);
11181 for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
11182 if (intel_crtc->base.state->enable)
11183 dev_priv->display.crtc_disable(&intel_crtc->base);
11186 /* crtc->mode is already used by the ->mode_set callbacks, hence we need
11187 * to set it here already despite that we pass it down the callchain.
11189 * Note we'll need to fix this up when we start tracking multiple
11190 * pipes; here we assume a single modeset_pipe and only track the
11191 * single crtc and mode.
11193 if (modeset_pipes) {
11194 crtc->mode = *mode;
11195 /* mode_set/enable/disable functions rely on a correct pipe
11197 intel_crtc_set_state(to_intel_crtc(crtc), pipe_config);
11200 * Calculate and store various constants which
11201 * are later needed by vblank and swap-completion
11202 * timestamping. They are derived from true hwmode.
11204 drm_calc_timestamping_constants(crtc,
11205 &pipe_config->base.adjusted_mode);
11208 /* Only after disabling all output pipelines that will be changed can we
11209 * update the the output configuration. */
11210 intel_modeset_update_state(dev, prepare_pipes);
11212 modeset_update_crtc_power_domains(dev);
11214 /* Set up the DPLL and any encoders state that needs to adjust or depend
11217 for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
11218 struct drm_plane *primary = intel_crtc->base.primary;
11219 int vdisplay, hdisplay;
11221 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
11222 ret = primary->funcs->update_plane(primary, &intel_crtc->base,
11224 hdisplay, vdisplay,
11226 hdisplay << 16, vdisplay << 16);
11229 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
11230 for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
11231 update_scanline_offset(intel_crtc);
11233 dev_priv->display.crtc_enable(&intel_crtc->base);
11236 /* FIXME: add subpixel order */
11238 if (ret && crtc->state->enable)
11239 crtc->mode = *saved_mode;
11245 static int intel_set_mode_pipes(struct drm_crtc *crtc,
11246 struct drm_display_mode *mode,
11247 int x, int y, struct drm_framebuffer *fb,
11248 struct intel_crtc_state *pipe_config,
11249 unsigned modeset_pipes,
11250 unsigned prepare_pipes,
11251 unsigned disable_pipes)
11255 ret = __intel_set_mode(crtc, mode, x, y, fb, pipe_config, modeset_pipes,
11256 prepare_pipes, disable_pipes);
11259 intel_modeset_check_state(crtc->dev);
11264 static int intel_set_mode(struct drm_crtc *crtc,
11265 struct drm_display_mode *mode,
11266 int x, int y, struct drm_framebuffer *fb)
11268 struct intel_crtc_state *pipe_config;
11269 unsigned modeset_pipes, prepare_pipes, disable_pipes;
11271 pipe_config = intel_modeset_compute_config(crtc, mode, fb,
11276 if (IS_ERR(pipe_config))
11277 return PTR_ERR(pipe_config);
11279 return intel_set_mode_pipes(crtc, mode, x, y, fb, pipe_config,
11280 modeset_pipes, prepare_pipes,
11284 void intel_crtc_restore_mode(struct drm_crtc *crtc)
11286 intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, crtc->primary->fb);
11289 #undef for_each_intel_crtc_masked
11291 static void intel_set_config_free(struct intel_set_config *config)
11296 kfree(config->save_connector_encoders);
11297 kfree(config->save_encoder_crtcs);
11298 kfree(config->save_crtc_enabled);
11302 static int intel_set_config_save_state(struct drm_device *dev,
11303 struct intel_set_config *config)
11305 struct drm_crtc *crtc;
11306 struct drm_encoder *encoder;
11307 struct drm_connector *connector;
11310 config->save_crtc_enabled =
11311 kcalloc(dev->mode_config.num_crtc,
11312 sizeof(bool), GFP_KERNEL);
11313 if (!config->save_crtc_enabled)
11316 config->save_encoder_crtcs =
11317 kcalloc(dev->mode_config.num_encoder,
11318 sizeof(struct drm_crtc *), GFP_KERNEL);
11319 if (!config->save_encoder_crtcs)
11322 config->save_connector_encoders =
11323 kcalloc(dev->mode_config.num_connector,
11324 sizeof(struct drm_encoder *), GFP_KERNEL);
11325 if (!config->save_connector_encoders)
11328 /* Copy data. Note that driver private data is not affected.
11329 * Should anything bad happen only the expected state is
11330 * restored, not the drivers personal bookkeeping.
11333 for_each_crtc(dev, crtc) {
11334 config->save_crtc_enabled[count++] = crtc->state->enable;
11338 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
11339 config->save_encoder_crtcs[count++] = encoder->crtc;
11343 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
11344 config->save_connector_encoders[count++] = connector->encoder;
11350 static void intel_set_config_restore_state(struct drm_device *dev,
11351 struct intel_set_config *config)
11353 struct intel_crtc *crtc;
11354 struct intel_encoder *encoder;
11355 struct intel_connector *connector;
11359 for_each_intel_crtc(dev, crtc) {
11360 crtc->new_enabled = config->save_crtc_enabled[count++];
11362 if (crtc->new_enabled)
11363 crtc->new_config = crtc->config;
11365 crtc->new_config = NULL;
11369 for_each_intel_encoder(dev, encoder) {
11370 encoder->new_crtc =
11371 to_intel_crtc(config->save_encoder_crtcs[count++]);
11375 list_for_each_entry(connector, &dev->mode_config.connector_list, base.head) {
11376 connector->new_encoder =
11377 to_intel_encoder(config->save_connector_encoders[count++]);
11382 is_crtc_connector_off(struct drm_mode_set *set)
11386 if (set->num_connectors == 0)
11389 if (WARN_ON(set->connectors == NULL))
11392 for (i = 0; i < set->num_connectors; i++)
11393 if (set->connectors[i]->encoder &&
11394 set->connectors[i]->encoder->crtc == set->crtc &&
11395 set->connectors[i]->dpms != DRM_MODE_DPMS_ON)
11402 intel_set_config_compute_mode_changes(struct drm_mode_set *set,
11403 struct intel_set_config *config)
11406 /* We should be able to check here if the fb has the same properties
11407 * and then just flip_or_move it */
11408 if (is_crtc_connector_off(set)) {
11409 config->mode_changed = true;
11410 } else if (set->crtc->primary->fb != set->fb) {
11412 * If we have no fb, we can only flip as long as the crtc is
11413 * active, otherwise we need a full mode set. The crtc may
11414 * be active if we've only disabled the primary plane, or
11415 * in fastboot situations.
11417 if (set->crtc->primary->fb == NULL) {
11418 struct intel_crtc *intel_crtc =
11419 to_intel_crtc(set->crtc);
11421 if (intel_crtc->active) {
11422 DRM_DEBUG_KMS("crtc has no fb, will flip\n");
11423 config->fb_changed = true;
11425 DRM_DEBUG_KMS("inactive crtc, full mode set\n");
11426 config->mode_changed = true;
11428 } else if (set->fb == NULL) {
11429 config->mode_changed = true;
11430 } else if (set->fb->pixel_format !=
11431 set->crtc->primary->fb->pixel_format) {
11432 config->mode_changed = true;
11434 config->fb_changed = true;
11438 if (set->fb && (set->x != set->crtc->x || set->y != set->crtc->y))
11439 config->fb_changed = true;
11441 if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
11442 DRM_DEBUG_KMS("modes are different, full mode set\n");
11443 drm_mode_debug_printmodeline(&set->crtc->mode);
11444 drm_mode_debug_printmodeline(set->mode);
11445 config->mode_changed = true;
11448 DRM_DEBUG_KMS("computed changes for [CRTC:%d], mode_changed=%d, fb_changed=%d\n",
11449 set->crtc->base.id, config->mode_changed, config->fb_changed);
11453 intel_modeset_stage_output_state(struct drm_device *dev,
11454 struct drm_mode_set *set,
11455 struct intel_set_config *config)
11457 struct intel_connector *connector;
11458 struct intel_encoder *encoder;
11459 struct intel_crtc *crtc;
11462 /* The upper layers ensure that we either disable a crtc or have a list
11463 * of connectors. For paranoia, double-check this. */
11464 WARN_ON(!set->fb && (set->num_connectors != 0));
11465 WARN_ON(set->fb && (set->num_connectors == 0));
11467 list_for_each_entry(connector, &dev->mode_config.connector_list,
11469 /* Otherwise traverse passed in connector list and get encoders
11471 for (ro = 0; ro < set->num_connectors; ro++) {
11472 if (set->connectors[ro] == &connector->base) {
11473 connector->new_encoder = intel_find_encoder(connector, to_intel_crtc(set->crtc)->pipe);
11478 /* If we disable the crtc, disable all its connectors. Also, if
11479 * the connector is on the changing crtc but not on the new
11480 * connector list, disable it. */
11481 if ((!set->fb || ro == set->num_connectors) &&
11482 connector->base.encoder &&
11483 connector->base.encoder->crtc == set->crtc) {
11484 connector->new_encoder = NULL;
11486 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
11487 connector->base.base.id,
11488 connector->base.name);
11492 if (&connector->new_encoder->base != connector->base.encoder) {
11493 DRM_DEBUG_KMS("encoder changed, full mode switch\n");
11494 config->mode_changed = true;
11497 /* connector->new_encoder is now updated for all connectors. */
11499 /* Update crtc of enabled connectors. */
11500 list_for_each_entry(connector, &dev->mode_config.connector_list,
11502 struct drm_crtc *new_crtc;
11504 if (!connector->new_encoder)
11507 new_crtc = connector->new_encoder->base.crtc;
11509 for (ro = 0; ro < set->num_connectors; ro++) {
11510 if (set->connectors[ro] == &connector->base)
11511 new_crtc = set->crtc;
11514 /* Make sure the new CRTC will work with the encoder */
11515 if (!drm_encoder_crtc_ok(&connector->new_encoder->base,
11519 connector->new_encoder->new_crtc = to_intel_crtc(new_crtc);
11521 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
11522 connector->base.base.id,
11523 connector->base.name,
11524 new_crtc->base.id);
11527 /* Check for any encoders that needs to be disabled. */
11528 for_each_intel_encoder(dev, encoder) {
11529 int num_connectors = 0;
11530 list_for_each_entry(connector,
11531 &dev->mode_config.connector_list,
11533 if (connector->new_encoder == encoder) {
11534 WARN_ON(!connector->new_encoder->new_crtc);
11539 if (num_connectors == 0)
11540 encoder->new_crtc = NULL;
11541 else if (num_connectors > 1)
11544 /* Only now check for crtc changes so we don't miss encoders
11545 * that will be disabled. */
11546 if (&encoder->new_crtc->base != encoder->base.crtc) {
11547 DRM_DEBUG_KMS("crtc changed, full mode switch\n");
11548 config->mode_changed = true;
11551 /* Now we've also updated encoder->new_crtc for all encoders. */
11552 list_for_each_entry(connector, &dev->mode_config.connector_list,
11554 if (connector->new_encoder)
11555 if (connector->new_encoder != connector->encoder)
11556 connector->encoder = connector->new_encoder;
11558 for_each_intel_crtc(dev, crtc) {
11559 crtc->new_enabled = false;
11561 for_each_intel_encoder(dev, encoder) {
11562 if (encoder->new_crtc == crtc) {
11563 crtc->new_enabled = true;
11568 if (crtc->new_enabled != crtc->base.state->enable) {
11569 DRM_DEBUG_KMS("crtc %sabled, full mode switch\n",
11570 crtc->new_enabled ? "en" : "dis");
11571 config->mode_changed = true;
11574 if (crtc->new_enabled)
11575 crtc->new_config = crtc->config;
11577 crtc->new_config = NULL;
11583 static void disable_crtc_nofb(struct intel_crtc *crtc)
11585 struct drm_device *dev = crtc->base.dev;
11586 struct intel_encoder *encoder;
11587 struct intel_connector *connector;
11589 DRM_DEBUG_KMS("Trying to restore without FB -> disabling pipe %c\n",
11590 pipe_name(crtc->pipe));
11592 list_for_each_entry(connector, &dev->mode_config.connector_list, base.head) {
11593 if (connector->new_encoder &&
11594 connector->new_encoder->new_crtc == crtc)
11595 connector->new_encoder = NULL;
11598 for_each_intel_encoder(dev, encoder) {
11599 if (encoder->new_crtc == crtc)
11600 encoder->new_crtc = NULL;
11603 crtc->new_enabled = false;
11604 crtc->new_config = NULL;
11607 static int intel_crtc_set_config(struct drm_mode_set *set)
11609 struct drm_device *dev;
11610 struct drm_mode_set save_set;
11611 struct intel_set_config *config;
11612 struct intel_crtc_state *pipe_config;
11613 unsigned modeset_pipes, prepare_pipes, disable_pipes;
11617 BUG_ON(!set->crtc);
11618 BUG_ON(!set->crtc->helper_private);
11620 /* Enforce sane interface api - has been abused by the fb helper. */
11621 BUG_ON(!set->mode && set->fb);
11622 BUG_ON(set->fb && set->num_connectors == 0);
11625 DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
11626 set->crtc->base.id, set->fb->base.id,
11627 (int)set->num_connectors, set->x, set->y);
11629 DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
11632 dev = set->crtc->dev;
11635 config = kzalloc(sizeof(*config), GFP_KERNEL);
11639 ret = intel_set_config_save_state(dev, config);
11643 save_set.crtc = set->crtc;
11644 save_set.mode = &set->crtc->mode;
11645 save_set.x = set->crtc->x;
11646 save_set.y = set->crtc->y;
11647 save_set.fb = set->crtc->primary->fb;
11649 /* Compute whether we need a full modeset, only an fb base update or no
11650 * change at all. In the future we might also check whether only the
11651 * mode changed, e.g. for LVDS where we only change the panel fitter in
11653 intel_set_config_compute_mode_changes(set, config);
11655 ret = intel_modeset_stage_output_state(dev, set, config);
11659 pipe_config = intel_modeset_compute_config(set->crtc, set->mode,
11664 if (IS_ERR(pipe_config)) {
11665 ret = PTR_ERR(pipe_config);
11667 } else if (pipe_config) {
11668 if (pipe_config->has_audio !=
11669 to_intel_crtc(set->crtc)->config->has_audio)
11670 config->mode_changed = true;
11673 * Note we have an issue here with infoframes: current code
11674 * only updates them on the full mode set path per hw
11675 * requirements. So here we should be checking for any
11676 * required changes and forcing a mode set.
11680 /* set_mode will free it in the mode_changed case */
11681 if (!config->mode_changed)
11682 kfree(pipe_config);
11684 intel_update_pipe_size(to_intel_crtc(set->crtc));
11686 if (config->mode_changed) {
11687 ret = intel_set_mode_pipes(set->crtc, set->mode,
11688 set->x, set->y, set->fb, pipe_config,
11689 modeset_pipes, prepare_pipes,
11691 } else if (config->fb_changed) {
11692 struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);
11693 struct drm_plane *primary = set->crtc->primary;
11694 int vdisplay, hdisplay;
11696 drm_crtc_get_hv_timing(set->mode, &hdisplay, &vdisplay);
11697 ret = primary->funcs->update_plane(primary, set->crtc, set->fb,
11698 0, 0, hdisplay, vdisplay,
11699 set->x << 16, set->y << 16,
11700 hdisplay << 16, vdisplay << 16);
11703 * We need to make sure the primary plane is re-enabled if it
11704 * has previously been turned off.
11706 if (!intel_crtc->primary_enabled && ret == 0) {
11707 WARN_ON(!intel_crtc->active);
11708 intel_enable_primary_hw_plane(set->crtc->primary, set->crtc);
11712 * In the fastboot case this may be our only check of the
11713 * state after boot. It would be better to only do it on
11714 * the first update, but we don't have a nice way of doing that
11715 * (and really, set_config isn't used much for high freq page
11716 * flipping, so increasing its cost here shouldn't be a big
11719 if (i915.fastboot && ret == 0)
11720 intel_modeset_check_state(set->crtc->dev);
11724 DRM_DEBUG_KMS("failed to set mode on [CRTC:%d], err = %d\n",
11725 set->crtc->base.id, ret);
11727 intel_set_config_restore_state(dev, config);
11730 * HACK: if the pipe was on, but we didn't have a framebuffer,
11731 * force the pipe off to avoid oopsing in the modeset code
11732 * due to fb==NULL. This should only happen during boot since
11733 * we don't yet reconstruct the FB from the hardware state.
11735 if (to_intel_crtc(save_set.crtc)->new_enabled && !save_set.fb)
11736 disable_crtc_nofb(to_intel_crtc(save_set.crtc));
11738 /* Try to restore the config */
11739 if (config->mode_changed &&
11740 intel_set_mode(save_set.crtc, save_set.mode,
11741 save_set.x, save_set.y, save_set.fb))
11742 DRM_ERROR("failed to restore config after modeset failure\n");
11746 intel_set_config_free(config);
11750 static const struct drm_crtc_funcs intel_crtc_funcs = {
11751 .gamma_set = intel_crtc_gamma_set,
11752 .set_config = intel_crtc_set_config,
11753 .destroy = intel_crtc_destroy,
11754 .page_flip = intel_crtc_page_flip,
11755 .atomic_duplicate_state = intel_crtc_duplicate_state,
11756 .atomic_destroy_state = intel_crtc_destroy_state,
11759 static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
11760 struct intel_shared_dpll *pll,
11761 struct intel_dpll_hw_state *hw_state)
11765 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
11768 val = I915_READ(PCH_DPLL(pll->id));
11769 hw_state->dpll = val;
11770 hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
11771 hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
11773 return val & DPLL_VCO_ENABLE;
11776 static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
11777 struct intel_shared_dpll *pll)
11779 I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
11780 I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
11783 static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
11784 struct intel_shared_dpll *pll)
11786 /* PCH refclock must be enabled first */
11787 ibx_assert_pch_refclk_enabled(dev_priv);
11789 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
11791 /* Wait for the clocks to stabilize. */
11792 POSTING_READ(PCH_DPLL(pll->id));
11795 /* The pixel multiplier can only be updated once the
11796 * DPLL is enabled and the clocks are stable.
11798 * So write it again.
11800 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
11801 POSTING_READ(PCH_DPLL(pll->id));
11805 static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
11806 struct intel_shared_dpll *pll)
11808 struct drm_device *dev = dev_priv->dev;
11809 struct intel_crtc *crtc;
11811 /* Make sure no transcoder isn't still depending on us. */
11812 for_each_intel_crtc(dev, crtc) {
11813 if (intel_crtc_to_shared_dpll(crtc) == pll)
11814 assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
11817 I915_WRITE(PCH_DPLL(pll->id), 0);
11818 POSTING_READ(PCH_DPLL(pll->id));
11822 static char *ibx_pch_dpll_names[] = {
11827 static void ibx_pch_dpll_init(struct drm_device *dev)
11829 struct drm_i915_private *dev_priv = dev->dev_private;
11832 dev_priv->num_shared_dpll = 2;
11834 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
11835 dev_priv->shared_dplls[i].id = i;
11836 dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
11837 dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
11838 dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
11839 dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
11840 dev_priv->shared_dplls[i].get_hw_state =
11841 ibx_pch_dpll_get_hw_state;
11845 static void intel_shared_dpll_init(struct drm_device *dev)
11847 struct drm_i915_private *dev_priv = dev->dev_private;
11850 intel_ddi_pll_init(dev);
11851 else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
11852 ibx_pch_dpll_init(dev);
11854 dev_priv->num_shared_dpll = 0;
11856 BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
11860 * intel_prepare_plane_fb - Prepare fb for usage on plane
11861 * @plane: drm plane to prepare for
11862 * @fb: framebuffer to prepare for presentation
11864 * Prepares a framebuffer for usage on a display plane. Generally this
11865 * involves pinning the underlying object and updating the frontbuffer tracking
11866 * bits. Some older platforms need special physical address handling for
11869 * Returns 0 on success, negative error code on failure.
11872 intel_prepare_plane_fb(struct drm_plane *plane,
11873 struct drm_framebuffer *fb)
11875 struct drm_device *dev = plane->dev;
11876 struct intel_plane *intel_plane = to_intel_plane(plane);
11877 enum pipe pipe = intel_plane->pipe;
11878 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11879 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
11880 unsigned frontbuffer_bits = 0;
11886 switch (plane->type) {
11887 case DRM_PLANE_TYPE_PRIMARY:
11888 frontbuffer_bits = INTEL_FRONTBUFFER_PRIMARY(pipe);
11890 case DRM_PLANE_TYPE_CURSOR:
11891 frontbuffer_bits = INTEL_FRONTBUFFER_CURSOR(pipe);
11893 case DRM_PLANE_TYPE_OVERLAY:
11894 frontbuffer_bits = INTEL_FRONTBUFFER_SPRITE(pipe);
11898 mutex_lock(&dev->struct_mutex);
11900 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
11901 INTEL_INFO(dev)->cursor_needs_physical) {
11902 int align = IS_I830(dev) ? 16 * 1024 : 256;
11903 ret = i915_gem_object_attach_phys(obj, align);
11905 DRM_DEBUG_KMS("failed to attach phys object\n");
11907 ret = intel_pin_and_fence_fb_obj(plane, fb, NULL);
11911 i915_gem_track_fb(old_obj, obj, frontbuffer_bits);
11913 mutex_unlock(&dev->struct_mutex);
11919 * intel_cleanup_plane_fb - Cleans up an fb after plane use
11920 * @plane: drm plane to clean up for
11921 * @fb: old framebuffer that was on plane
11923 * Cleans up a framebuffer that has just been removed from a plane.
11926 intel_cleanup_plane_fb(struct drm_plane *plane,
11927 struct drm_framebuffer *fb)
11929 struct drm_device *dev = plane->dev;
11930 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11935 if (plane->type != DRM_PLANE_TYPE_CURSOR ||
11936 !INTEL_INFO(dev)->cursor_needs_physical) {
11937 mutex_lock(&dev->struct_mutex);
11938 intel_unpin_fb_obj(obj);
11939 mutex_unlock(&dev->struct_mutex);
11944 intel_check_primary_plane(struct drm_plane *plane,
11945 struct intel_plane_state *state)
11947 struct drm_device *dev = plane->dev;
11948 struct drm_i915_private *dev_priv = dev->dev_private;
11949 struct drm_crtc *crtc = state->base.crtc;
11950 struct intel_crtc *intel_crtc;
11951 struct drm_framebuffer *fb = state->base.fb;
11952 struct drm_rect *dest = &state->dst;
11953 struct drm_rect *src = &state->src;
11954 const struct drm_rect *clip = &state->clip;
11957 crtc = crtc ? crtc : plane->crtc;
11958 intel_crtc = to_intel_crtc(crtc);
11960 ret = drm_plane_helper_check_update(plane, crtc, fb,
11962 DRM_PLANE_HELPER_NO_SCALING,
11963 DRM_PLANE_HELPER_NO_SCALING,
11964 false, true, &state->visible);
11968 if (intel_crtc->active) {
11969 intel_crtc->atomic.wait_for_flips = true;
11972 * FBC does not work on some platforms for rotated
11973 * planes, so disable it when rotation is not 0 and
11974 * update it when rotation is set back to 0.
11976 * FIXME: This is redundant with the fbc update done in
11977 * the primary plane enable function except that that
11978 * one is done too late. We eventually need to unify
11981 if (intel_crtc->primary_enabled &&
11982 INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
11983 dev_priv->fbc.crtc == intel_crtc &&
11984 state->base.rotation != BIT(DRM_ROTATE_0)) {
11985 intel_crtc->atomic.disable_fbc = true;
11988 if (state->visible) {
11990 * BDW signals flip done immediately if the plane
11991 * is disabled, even if the plane enable is already
11992 * armed to occur at the next vblank :(
11994 if (IS_BROADWELL(dev) && !intel_crtc->primary_enabled)
11995 intel_crtc->atomic.wait_vblank = true;
11998 intel_crtc->atomic.fb_bits |=
11999 INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
12001 intel_crtc->atomic.update_fbc = true;
12008 intel_commit_primary_plane(struct drm_plane *plane,
12009 struct intel_plane_state *state)
12011 struct drm_crtc *crtc = state->base.crtc;
12012 struct drm_framebuffer *fb = state->base.fb;
12013 struct drm_device *dev = plane->dev;
12014 struct drm_i915_private *dev_priv = dev->dev_private;
12015 struct intel_crtc *intel_crtc;
12016 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
12017 struct intel_plane *intel_plane = to_intel_plane(plane);
12018 struct drm_rect *src = &state->src;
12020 crtc = crtc ? crtc : plane->crtc;
12021 intel_crtc = to_intel_crtc(crtc);
12024 crtc->x = src->x1 >> 16;
12025 crtc->y = src->y1 >> 16;
12027 intel_plane->obj = obj;
12029 if (intel_crtc->active) {
12030 if (state->visible) {
12031 /* FIXME: kill this fastboot hack */
12032 intel_update_pipe_size(intel_crtc);
12034 intel_crtc->primary_enabled = true;
12036 dev_priv->display.update_primary_plane(crtc, plane->fb,
12040 * If clipping results in a non-visible primary plane,
12041 * we'll disable the primary plane. Note that this is
12042 * a bit different than what happens if userspace
12043 * explicitly disables the plane by passing fb=0
12044 * because plane->fb still gets set and pinned.
12046 intel_disable_primary_hw_plane(plane, crtc);
12051 static void intel_begin_crtc_commit(struct drm_crtc *crtc)
12053 struct drm_device *dev = crtc->dev;
12054 struct drm_i915_private *dev_priv = dev->dev_private;
12055 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12056 struct intel_plane *intel_plane;
12057 struct drm_plane *p;
12058 unsigned fb_bits = 0;
12060 /* Track fb's for any planes being disabled */
12061 list_for_each_entry(p, &dev->mode_config.plane_list, head) {
12062 intel_plane = to_intel_plane(p);
12064 if (intel_crtc->atomic.disabled_planes &
12065 (1 << drm_plane_index(p))) {
12067 case DRM_PLANE_TYPE_PRIMARY:
12068 fb_bits = INTEL_FRONTBUFFER_PRIMARY(intel_plane->pipe);
12070 case DRM_PLANE_TYPE_CURSOR:
12071 fb_bits = INTEL_FRONTBUFFER_CURSOR(intel_plane->pipe);
12073 case DRM_PLANE_TYPE_OVERLAY:
12074 fb_bits = INTEL_FRONTBUFFER_SPRITE(intel_plane->pipe);
12078 mutex_lock(&dev->struct_mutex);
12079 i915_gem_track_fb(intel_fb_obj(p->fb), NULL, fb_bits);
12080 mutex_unlock(&dev->struct_mutex);
12084 if (intel_crtc->atomic.wait_for_flips)
12085 intel_crtc_wait_for_pending_flips(crtc);
12087 if (intel_crtc->atomic.disable_fbc)
12088 intel_fbc_disable(dev);
12090 if (intel_crtc->atomic.pre_disable_primary)
12091 intel_pre_disable_primary(crtc);
12093 if (intel_crtc->atomic.update_wm)
12094 intel_update_watermarks(crtc);
12096 intel_runtime_pm_get(dev_priv);
12098 /* Perform vblank evasion around commit operation */
12099 if (intel_crtc->active)
12100 intel_crtc->atomic.evade =
12101 intel_pipe_update_start(intel_crtc,
12102 &intel_crtc->atomic.start_vbl_count);
12105 static void intel_finish_crtc_commit(struct drm_crtc *crtc)
12107 struct drm_device *dev = crtc->dev;
12108 struct drm_i915_private *dev_priv = dev->dev_private;
12109 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12110 struct drm_plane *p;
12112 if (intel_crtc->atomic.evade)
12113 intel_pipe_update_end(intel_crtc,
12114 intel_crtc->atomic.start_vbl_count);
12116 intel_runtime_pm_put(dev_priv);
12118 if (intel_crtc->atomic.wait_vblank)
12119 intel_wait_for_vblank(dev, intel_crtc->pipe);
12121 intel_frontbuffer_flip(dev, intel_crtc->atomic.fb_bits);
12123 if (intel_crtc->atomic.update_fbc) {
12124 mutex_lock(&dev->struct_mutex);
12125 intel_fbc_update(dev);
12126 mutex_unlock(&dev->struct_mutex);
12129 if (intel_crtc->atomic.post_enable_primary)
12130 intel_post_enable_primary(crtc);
12132 drm_for_each_legacy_plane(p, &dev->mode_config.plane_list)
12133 if (intel_crtc->atomic.update_sprite_watermarks & drm_plane_index(p))
12134 intel_update_sprite_watermarks(p, crtc, 0, 0, 0,
12137 memset(&intel_crtc->atomic, 0, sizeof(intel_crtc->atomic));
12141 * intel_plane_destroy - destroy a plane
12142 * @plane: plane to destroy
12144 * Common destruction function for all types of planes (primary, cursor,
12147 void intel_plane_destroy(struct drm_plane *plane)
12149 struct intel_plane *intel_plane = to_intel_plane(plane);
12150 drm_plane_cleanup(plane);
12151 kfree(intel_plane);
12154 const struct drm_plane_funcs intel_plane_funcs = {
12155 .update_plane = drm_atomic_helper_update_plane,
12156 .disable_plane = drm_atomic_helper_disable_plane,
12157 .destroy = intel_plane_destroy,
12158 .set_property = drm_atomic_helper_plane_set_property,
12159 .atomic_get_property = intel_plane_atomic_get_property,
12160 .atomic_set_property = intel_plane_atomic_set_property,
12161 .atomic_duplicate_state = intel_plane_duplicate_state,
12162 .atomic_destroy_state = intel_plane_destroy_state,
12166 static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
12169 struct intel_plane *primary;
12170 struct intel_plane_state *state;
12171 const uint32_t *intel_primary_formats;
12174 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
12175 if (primary == NULL)
12178 state = intel_create_plane_state(&primary->base);
12183 primary->base.state = &state->base;
12185 primary->can_scale = false;
12186 primary->max_downscale = 1;
12187 primary->pipe = pipe;
12188 primary->plane = pipe;
12189 primary->check_plane = intel_check_primary_plane;
12190 primary->commit_plane = intel_commit_primary_plane;
12191 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
12192 primary->plane = !pipe;
12194 if (INTEL_INFO(dev)->gen <= 3) {
12195 intel_primary_formats = intel_primary_formats_gen2;
12196 num_formats = ARRAY_SIZE(intel_primary_formats_gen2);
12198 intel_primary_formats = intel_primary_formats_gen4;
12199 num_formats = ARRAY_SIZE(intel_primary_formats_gen4);
12202 drm_universal_plane_init(dev, &primary->base, 0,
12203 &intel_plane_funcs,
12204 intel_primary_formats, num_formats,
12205 DRM_PLANE_TYPE_PRIMARY);
12207 if (INTEL_INFO(dev)->gen >= 4) {
12208 if (!dev->mode_config.rotation_property)
12209 dev->mode_config.rotation_property =
12210 drm_mode_create_rotation_property(dev,
12211 BIT(DRM_ROTATE_0) |
12212 BIT(DRM_ROTATE_180));
12213 if (dev->mode_config.rotation_property)
12214 drm_object_attach_property(&primary->base.base,
12215 dev->mode_config.rotation_property,
12216 state->base.rotation);
12219 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
12221 return &primary->base;
12225 intel_check_cursor_plane(struct drm_plane *plane,
12226 struct intel_plane_state *state)
12228 struct drm_crtc *crtc = state->base.crtc;
12229 struct drm_device *dev = plane->dev;
12230 struct drm_framebuffer *fb = state->base.fb;
12231 struct drm_rect *dest = &state->dst;
12232 struct drm_rect *src = &state->src;
12233 const struct drm_rect *clip = &state->clip;
12234 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
12235 struct intel_crtc *intel_crtc;
12239 crtc = crtc ? crtc : plane->crtc;
12240 intel_crtc = to_intel_crtc(crtc);
12242 ret = drm_plane_helper_check_update(plane, crtc, fb,
12244 DRM_PLANE_HELPER_NO_SCALING,
12245 DRM_PLANE_HELPER_NO_SCALING,
12246 true, true, &state->visible);
12251 /* if we want to turn off the cursor ignore width and height */
12255 /* Check for which cursor types we support */
12256 if (!cursor_size_ok(dev, state->base.crtc_w, state->base.crtc_h)) {
12257 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
12258 state->base.crtc_w, state->base.crtc_h);
12262 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
12263 if (obj->base.size < stride * state->base.crtc_h) {
12264 DRM_DEBUG_KMS("buffer is too small\n");
12268 if (fb == crtc->cursor->fb)
12271 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
12272 DRM_DEBUG_KMS("cursor cannot be tiled\n");
12277 if (intel_crtc->active) {
12278 if (intel_crtc->cursor_width != state->base.crtc_w)
12279 intel_crtc->atomic.update_wm = true;
12281 intel_crtc->atomic.fb_bits |=
12282 INTEL_FRONTBUFFER_CURSOR(intel_crtc->pipe);
12289 intel_commit_cursor_plane(struct drm_plane *plane,
12290 struct intel_plane_state *state)
12292 struct drm_crtc *crtc = state->base.crtc;
12293 struct drm_device *dev = plane->dev;
12294 struct intel_crtc *intel_crtc;
12295 struct intel_plane *intel_plane = to_intel_plane(plane);
12296 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
12299 crtc = crtc ? crtc : plane->crtc;
12300 intel_crtc = to_intel_crtc(crtc);
12302 plane->fb = state->base.fb;
12303 crtc->cursor_x = state->base.crtc_x;
12304 crtc->cursor_y = state->base.crtc_y;
12306 intel_plane->obj = obj;
12308 if (intel_crtc->cursor_bo == obj)
12313 else if (!INTEL_INFO(dev)->cursor_needs_physical)
12314 addr = i915_gem_obj_ggtt_offset(obj);
12316 addr = obj->phys_handle->busaddr;
12318 intel_crtc->cursor_addr = addr;
12319 intel_crtc->cursor_bo = obj;
12321 intel_crtc->cursor_width = state->base.crtc_w;
12322 intel_crtc->cursor_height = state->base.crtc_h;
12324 if (intel_crtc->active)
12325 intel_crtc_update_cursor(crtc, state->visible);
12328 static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
12331 struct intel_plane *cursor;
12332 struct intel_plane_state *state;
12334 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
12335 if (cursor == NULL)
12338 state = intel_create_plane_state(&cursor->base);
12343 cursor->base.state = &state->base;
12345 cursor->can_scale = false;
12346 cursor->max_downscale = 1;
12347 cursor->pipe = pipe;
12348 cursor->plane = pipe;
12349 cursor->check_plane = intel_check_cursor_plane;
12350 cursor->commit_plane = intel_commit_cursor_plane;
12352 drm_universal_plane_init(dev, &cursor->base, 0,
12353 &intel_plane_funcs,
12354 intel_cursor_formats,
12355 ARRAY_SIZE(intel_cursor_formats),
12356 DRM_PLANE_TYPE_CURSOR);
12358 if (INTEL_INFO(dev)->gen >= 4) {
12359 if (!dev->mode_config.rotation_property)
12360 dev->mode_config.rotation_property =
12361 drm_mode_create_rotation_property(dev,
12362 BIT(DRM_ROTATE_0) |
12363 BIT(DRM_ROTATE_180));
12364 if (dev->mode_config.rotation_property)
12365 drm_object_attach_property(&cursor->base.base,
12366 dev->mode_config.rotation_property,
12367 state->base.rotation);
12370 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
12372 return &cursor->base;
12375 static void intel_crtc_init(struct drm_device *dev, int pipe)
12377 struct drm_i915_private *dev_priv = dev->dev_private;
12378 struct intel_crtc *intel_crtc;
12379 struct intel_crtc_state *crtc_state = NULL;
12380 struct drm_plane *primary = NULL;
12381 struct drm_plane *cursor = NULL;
12384 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
12385 if (intel_crtc == NULL)
12388 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
12391 intel_crtc_set_state(intel_crtc, crtc_state);
12392 crtc_state->base.crtc = &intel_crtc->base;
12394 primary = intel_primary_plane_create(dev, pipe);
12398 cursor = intel_cursor_plane_create(dev, pipe);
12402 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
12403 cursor, &intel_crtc_funcs);
12407 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
12408 for (i = 0; i < 256; i++) {
12409 intel_crtc->lut_r[i] = i;
12410 intel_crtc->lut_g[i] = i;
12411 intel_crtc->lut_b[i] = i;
12415 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
12416 * is hooked to pipe B. Hence we want plane A feeding pipe B.
12418 intel_crtc->pipe = pipe;
12419 intel_crtc->plane = pipe;
12420 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
12421 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
12422 intel_crtc->plane = !pipe;
12425 intel_crtc->cursor_base = ~0;
12426 intel_crtc->cursor_cntl = ~0;
12427 intel_crtc->cursor_size = ~0;
12429 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
12430 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
12431 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
12432 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
12434 INIT_WORK(&intel_crtc->mmio_flip.work, intel_mmio_flip_work_func);
12436 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
12438 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
12443 drm_plane_cleanup(primary);
12445 drm_plane_cleanup(cursor);
12450 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
12452 struct drm_encoder *encoder = connector->base.encoder;
12453 struct drm_device *dev = connector->base.dev;
12455 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
12457 if (!encoder || WARN_ON(!encoder->crtc))
12458 return INVALID_PIPE;
12460 return to_intel_crtc(encoder->crtc)->pipe;
12463 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
12464 struct drm_file *file)
12466 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
12467 struct drm_crtc *drmmode_crtc;
12468 struct intel_crtc *crtc;
12470 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
12472 if (!drmmode_crtc) {
12473 DRM_ERROR("no such CRTC id\n");
12477 crtc = to_intel_crtc(drmmode_crtc);
12478 pipe_from_crtc_id->pipe = crtc->pipe;
12483 static int intel_encoder_clones(struct intel_encoder *encoder)
12485 struct drm_device *dev = encoder->base.dev;
12486 struct intel_encoder *source_encoder;
12487 int index_mask = 0;
12490 for_each_intel_encoder(dev, source_encoder) {
12491 if (encoders_cloneable(encoder, source_encoder))
12492 index_mask |= (1 << entry);
12500 static bool has_edp_a(struct drm_device *dev)
12502 struct drm_i915_private *dev_priv = dev->dev_private;
12504 if (!IS_MOBILE(dev))
12507 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
12510 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
12516 static bool intel_crt_present(struct drm_device *dev)
12518 struct drm_i915_private *dev_priv = dev->dev_private;
12520 if (INTEL_INFO(dev)->gen >= 9)
12523 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
12526 if (IS_CHERRYVIEW(dev))
12529 if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
12535 static void intel_setup_outputs(struct drm_device *dev)
12537 struct drm_i915_private *dev_priv = dev->dev_private;
12538 struct intel_encoder *encoder;
12539 struct drm_connector *connector;
12540 bool dpd_is_edp = false;
12542 intel_lvds_init(dev);
12544 if (intel_crt_present(dev))
12545 intel_crt_init(dev);
12547 if (HAS_DDI(dev)) {
12550 /* Haswell uses DDI functions to detect digital outputs */
12551 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
12552 /* DDI A only supports eDP */
12554 intel_ddi_init(dev, PORT_A);
12556 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
12558 found = I915_READ(SFUSE_STRAP);
12560 if (found & SFUSE_STRAP_DDIB_DETECTED)
12561 intel_ddi_init(dev, PORT_B);
12562 if (found & SFUSE_STRAP_DDIC_DETECTED)
12563 intel_ddi_init(dev, PORT_C);
12564 if (found & SFUSE_STRAP_DDID_DETECTED)
12565 intel_ddi_init(dev, PORT_D);
12566 } else if (HAS_PCH_SPLIT(dev)) {
12568 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
12570 if (has_edp_a(dev))
12571 intel_dp_init(dev, DP_A, PORT_A);
12573 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
12574 /* PCH SDVOB multiplex with HDMIB */
12575 found = intel_sdvo_init(dev, PCH_SDVOB, true);
12577 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
12578 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
12579 intel_dp_init(dev, PCH_DP_B, PORT_B);
12582 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
12583 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
12585 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
12586 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
12588 if (I915_READ(PCH_DP_C) & DP_DETECTED)
12589 intel_dp_init(dev, PCH_DP_C, PORT_C);
12591 if (I915_READ(PCH_DP_D) & DP_DETECTED)
12592 intel_dp_init(dev, PCH_DP_D, PORT_D);
12593 } else if (IS_VALLEYVIEW(dev)) {
12595 * The DP_DETECTED bit is the latched state of the DDC
12596 * SDA pin at boot. However since eDP doesn't require DDC
12597 * (no way to plug in a DP->HDMI dongle) the DDC pins for
12598 * eDP ports may have been muxed to an alternate function.
12599 * Thus we can't rely on the DP_DETECTED bit alone to detect
12600 * eDP ports. Consult the VBT as well as DP_DETECTED to
12601 * detect eDP ports.
12603 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED &&
12604 !intel_dp_is_edp(dev, PORT_B))
12605 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
12607 if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED ||
12608 intel_dp_is_edp(dev, PORT_B))
12609 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B);
12611 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED &&
12612 !intel_dp_is_edp(dev, PORT_C))
12613 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
12615 if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED ||
12616 intel_dp_is_edp(dev, PORT_C))
12617 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
12619 if (IS_CHERRYVIEW(dev)) {
12620 if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED)
12621 intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID,
12623 /* eDP not supported on port D, so don't check VBT */
12624 if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED)
12625 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D);
12628 intel_dsi_init(dev);
12629 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
12630 bool found = false;
12632 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
12633 DRM_DEBUG_KMS("probing SDVOB\n");
12634 found = intel_sdvo_init(dev, GEN3_SDVOB, true);
12635 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
12636 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
12637 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
12640 if (!found && SUPPORTS_INTEGRATED_DP(dev))
12641 intel_dp_init(dev, DP_B, PORT_B);
12644 /* Before G4X SDVOC doesn't have its own detect register */
12646 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
12647 DRM_DEBUG_KMS("probing SDVOC\n");
12648 found = intel_sdvo_init(dev, GEN3_SDVOC, false);
12651 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
12653 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
12654 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
12655 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
12657 if (SUPPORTS_INTEGRATED_DP(dev))
12658 intel_dp_init(dev, DP_C, PORT_C);
12661 if (SUPPORTS_INTEGRATED_DP(dev) &&
12662 (I915_READ(DP_D) & DP_DETECTED))
12663 intel_dp_init(dev, DP_D, PORT_D);
12664 } else if (IS_GEN2(dev))
12665 intel_dvo_init(dev);
12667 if (SUPPORTS_TV(dev))
12668 intel_tv_init(dev);
12671 * FIXME: We don't have full atomic support yet, but we want to be
12672 * able to enable/test plane updates via the atomic interface in the
12673 * meantime. However as soon as we flip DRIVER_ATOMIC on, the DRM core
12674 * will take some atomic codepaths to lookup properties during
12675 * drmModeGetConnector() that unconditionally dereference
12676 * connector->state.
12678 * We create a dummy connector state here for each connector to ensure
12679 * the DRM core doesn't try to dereference a NULL connector->state.
12680 * The actual connector properties will never be updated or contain
12681 * useful information, but since we're doing this specifically for
12682 * testing/debug of the plane operations (and only when a specific
12683 * kernel module option is given), that shouldn't really matter.
12685 * Once atomic support for crtc's + connectors lands, this loop should
12686 * be removed since we'll be setting up real connector state, which
12687 * will contain Intel-specific properties.
12689 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
12690 list_for_each_entry(connector,
12691 &dev->mode_config.connector_list,
12693 if (!WARN_ON(connector->state)) {
12695 kzalloc(sizeof(*connector->state),
12701 intel_psr_init(dev);
12703 for_each_intel_encoder(dev, encoder) {
12704 encoder->base.possible_crtcs = encoder->crtc_mask;
12705 encoder->base.possible_clones =
12706 intel_encoder_clones(encoder);
12709 intel_init_pch_refclk(dev);
12711 drm_helper_move_panel_connectors_to_head(dev);
12714 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
12716 struct drm_device *dev = fb->dev;
12717 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
12719 drm_framebuffer_cleanup(fb);
12720 mutex_lock(&dev->struct_mutex);
12721 WARN_ON(!intel_fb->obj->framebuffer_references--);
12722 drm_gem_object_unreference(&intel_fb->obj->base);
12723 mutex_unlock(&dev->struct_mutex);
12727 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
12728 struct drm_file *file,
12729 unsigned int *handle)
12731 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
12732 struct drm_i915_gem_object *obj = intel_fb->obj;
12734 return drm_gem_handle_create(file, &obj->base, handle);
12737 static const struct drm_framebuffer_funcs intel_fb_funcs = {
12738 .destroy = intel_user_framebuffer_destroy,
12739 .create_handle = intel_user_framebuffer_create_handle,
12743 u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
12744 uint32_t pixel_format)
12746 u32 gen = INTEL_INFO(dev)->gen;
12749 /* "The stride in bytes must not exceed the of the size of 8K
12750 * pixels and 32K bytes."
12752 return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
12753 } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
12755 } else if (gen >= 4) {
12756 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
12760 } else if (gen >= 3) {
12761 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
12766 /* XXX DSPC is limited to 4k tiled */
12771 static int intel_framebuffer_init(struct drm_device *dev,
12772 struct intel_framebuffer *intel_fb,
12773 struct drm_mode_fb_cmd2 *mode_cmd,
12774 struct drm_i915_gem_object *obj)
12776 int aligned_height;
12778 u32 pitch_limit, stride_alignment;
12780 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
12782 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
12783 /* Enforce that fb modifier and tiling mode match, but only for
12784 * X-tiled. This is needed for FBC. */
12785 if (!!(obj->tiling_mode == I915_TILING_X) !=
12786 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
12787 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
12791 if (obj->tiling_mode == I915_TILING_X)
12792 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
12793 else if (obj->tiling_mode == I915_TILING_Y) {
12794 DRM_DEBUG("No Y tiling for legacy addfb\n");
12799 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_Y_TILED) {
12800 DRM_DEBUG("hardware does not support tiling Y\n");
12804 stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
12805 mode_cmd->pixel_format);
12806 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
12807 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
12808 mode_cmd->pitches[0], stride_alignment);
12812 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
12813 mode_cmd->pixel_format);
12814 if (mode_cmd->pitches[0] > pitch_limit) {
12815 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
12816 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
12817 "tiled" : "linear",
12818 mode_cmd->pitches[0], pitch_limit);
12822 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
12823 mode_cmd->pitches[0] != obj->stride) {
12824 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
12825 mode_cmd->pitches[0], obj->stride);
12829 /* Reject formats not supported by any plane early. */
12830 switch (mode_cmd->pixel_format) {
12831 case DRM_FORMAT_C8:
12832 case DRM_FORMAT_RGB565:
12833 case DRM_FORMAT_XRGB8888:
12834 case DRM_FORMAT_ARGB8888:
12836 case DRM_FORMAT_XRGB1555:
12837 case DRM_FORMAT_ARGB1555:
12838 if (INTEL_INFO(dev)->gen > 3) {
12839 DRM_DEBUG("unsupported pixel format: %s\n",
12840 drm_get_format_name(mode_cmd->pixel_format));
12844 case DRM_FORMAT_XBGR8888:
12845 case DRM_FORMAT_ABGR8888:
12846 case DRM_FORMAT_XRGB2101010:
12847 case DRM_FORMAT_ARGB2101010:
12848 case DRM_FORMAT_XBGR2101010:
12849 case DRM_FORMAT_ABGR2101010:
12850 if (INTEL_INFO(dev)->gen < 4) {
12851 DRM_DEBUG("unsupported pixel format: %s\n",
12852 drm_get_format_name(mode_cmd->pixel_format));
12856 case DRM_FORMAT_YUYV:
12857 case DRM_FORMAT_UYVY:
12858 case DRM_FORMAT_YVYU:
12859 case DRM_FORMAT_VYUY:
12860 if (INTEL_INFO(dev)->gen < 5) {
12861 DRM_DEBUG("unsupported pixel format: %s\n",
12862 drm_get_format_name(mode_cmd->pixel_format));
12867 DRM_DEBUG("unsupported pixel format: %s\n",
12868 drm_get_format_name(mode_cmd->pixel_format));
12872 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
12873 if (mode_cmd->offsets[0] != 0)
12876 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
12877 mode_cmd->pixel_format,
12878 mode_cmd->modifier[0]);
12879 /* FIXME drm helper for size checks (especially planar formats)? */
12880 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
12883 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
12884 intel_fb->obj = obj;
12885 intel_fb->obj->framebuffer_references++;
12887 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
12889 DRM_ERROR("framebuffer init failed %d\n", ret);
12896 static struct drm_framebuffer *
12897 intel_user_framebuffer_create(struct drm_device *dev,
12898 struct drm_file *filp,
12899 struct drm_mode_fb_cmd2 *mode_cmd)
12901 struct drm_i915_gem_object *obj;
12903 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
12904 mode_cmd->handles[0]));
12905 if (&obj->base == NULL)
12906 return ERR_PTR(-ENOENT);
12908 return intel_framebuffer_create(dev, mode_cmd, obj);
12911 #ifndef CONFIG_DRM_I915_FBDEV
12912 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
12917 static const struct drm_mode_config_funcs intel_mode_funcs = {
12918 .fb_create = intel_user_framebuffer_create,
12919 .output_poll_changed = intel_fbdev_output_poll_changed,
12920 .atomic_check = intel_atomic_check,
12921 .atomic_commit = intel_atomic_commit,
12924 /* Set up chip specific display functions */
12925 static void intel_init_display(struct drm_device *dev)
12927 struct drm_i915_private *dev_priv = dev->dev_private;
12929 if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
12930 dev_priv->display.find_dpll = g4x_find_best_dpll;
12931 else if (IS_CHERRYVIEW(dev))
12932 dev_priv->display.find_dpll = chv_find_best_dpll;
12933 else if (IS_VALLEYVIEW(dev))
12934 dev_priv->display.find_dpll = vlv_find_best_dpll;
12935 else if (IS_PINEVIEW(dev))
12936 dev_priv->display.find_dpll = pnv_find_best_dpll;
12938 dev_priv->display.find_dpll = i9xx_find_best_dpll;
12940 if (INTEL_INFO(dev)->gen >= 9) {
12941 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
12942 dev_priv->display.get_initial_plane_config =
12943 skylake_get_initial_plane_config;
12944 dev_priv->display.crtc_compute_clock =
12945 haswell_crtc_compute_clock;
12946 dev_priv->display.crtc_enable = haswell_crtc_enable;
12947 dev_priv->display.crtc_disable = haswell_crtc_disable;
12948 dev_priv->display.off = ironlake_crtc_off;
12949 dev_priv->display.update_primary_plane =
12950 skylake_update_primary_plane;
12951 } else if (HAS_DDI(dev)) {
12952 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
12953 dev_priv->display.get_initial_plane_config =
12954 ironlake_get_initial_plane_config;
12955 dev_priv->display.crtc_compute_clock =
12956 haswell_crtc_compute_clock;
12957 dev_priv->display.crtc_enable = haswell_crtc_enable;
12958 dev_priv->display.crtc_disable = haswell_crtc_disable;
12959 dev_priv->display.off = ironlake_crtc_off;
12960 dev_priv->display.update_primary_plane =
12961 ironlake_update_primary_plane;
12962 } else if (HAS_PCH_SPLIT(dev)) {
12963 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
12964 dev_priv->display.get_initial_plane_config =
12965 ironlake_get_initial_plane_config;
12966 dev_priv->display.crtc_compute_clock =
12967 ironlake_crtc_compute_clock;
12968 dev_priv->display.crtc_enable = ironlake_crtc_enable;
12969 dev_priv->display.crtc_disable = ironlake_crtc_disable;
12970 dev_priv->display.off = ironlake_crtc_off;
12971 dev_priv->display.update_primary_plane =
12972 ironlake_update_primary_plane;
12973 } else if (IS_VALLEYVIEW(dev)) {
12974 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
12975 dev_priv->display.get_initial_plane_config =
12976 i9xx_get_initial_plane_config;
12977 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
12978 dev_priv->display.crtc_enable = valleyview_crtc_enable;
12979 dev_priv->display.crtc_disable = i9xx_crtc_disable;
12980 dev_priv->display.off = i9xx_crtc_off;
12981 dev_priv->display.update_primary_plane =
12982 i9xx_update_primary_plane;
12984 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
12985 dev_priv->display.get_initial_plane_config =
12986 i9xx_get_initial_plane_config;
12987 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
12988 dev_priv->display.crtc_enable = i9xx_crtc_enable;
12989 dev_priv->display.crtc_disable = i9xx_crtc_disable;
12990 dev_priv->display.off = i9xx_crtc_off;
12991 dev_priv->display.update_primary_plane =
12992 i9xx_update_primary_plane;
12995 /* Returns the core display clock speed */
12996 if (IS_VALLEYVIEW(dev))
12997 dev_priv->display.get_display_clock_speed =
12998 valleyview_get_display_clock_speed;
12999 else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
13000 dev_priv->display.get_display_clock_speed =
13001 i945_get_display_clock_speed;
13002 else if (IS_I915G(dev))
13003 dev_priv->display.get_display_clock_speed =
13004 i915_get_display_clock_speed;
13005 else if (IS_I945GM(dev) || IS_845G(dev))
13006 dev_priv->display.get_display_clock_speed =
13007 i9xx_misc_get_display_clock_speed;
13008 else if (IS_PINEVIEW(dev))
13009 dev_priv->display.get_display_clock_speed =
13010 pnv_get_display_clock_speed;
13011 else if (IS_I915GM(dev))
13012 dev_priv->display.get_display_clock_speed =
13013 i915gm_get_display_clock_speed;
13014 else if (IS_I865G(dev))
13015 dev_priv->display.get_display_clock_speed =
13016 i865_get_display_clock_speed;
13017 else if (IS_I85X(dev))
13018 dev_priv->display.get_display_clock_speed =
13019 i855_get_display_clock_speed;
13020 else /* 852, 830 */
13021 dev_priv->display.get_display_clock_speed =
13022 i830_get_display_clock_speed;
13024 if (IS_GEN5(dev)) {
13025 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
13026 } else if (IS_GEN6(dev)) {
13027 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
13028 } else if (IS_IVYBRIDGE(dev)) {
13029 /* FIXME: detect B0+ stepping and use auto training */
13030 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
13031 dev_priv->display.modeset_global_resources =
13032 ivb_modeset_global_resources;
13033 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
13034 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
13035 } else if (IS_VALLEYVIEW(dev)) {
13036 dev_priv->display.modeset_global_resources =
13037 valleyview_modeset_global_resources;
13040 switch (INTEL_INFO(dev)->gen) {
13042 dev_priv->display.queue_flip = intel_gen2_queue_flip;
13046 dev_priv->display.queue_flip = intel_gen3_queue_flip;
13051 dev_priv->display.queue_flip = intel_gen4_queue_flip;
13055 dev_priv->display.queue_flip = intel_gen6_queue_flip;
13058 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
13059 dev_priv->display.queue_flip = intel_gen7_queue_flip;
13062 /* Drop through - unsupported since execlist only. */
13064 /* Default just returns -ENODEV to indicate unsupported */
13065 dev_priv->display.queue_flip = intel_default_queue_flip;
13068 intel_panel_init_backlight_funcs(dev);
13070 mutex_init(&dev_priv->pps_mutex);
13074 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
13075 * resume, or other times. This quirk makes sure that's the case for
13076 * affected systems.
13078 static void quirk_pipea_force(struct drm_device *dev)
13080 struct drm_i915_private *dev_priv = dev->dev_private;
13082 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
13083 DRM_INFO("applying pipe a force quirk\n");
13086 static void quirk_pipeb_force(struct drm_device *dev)
13088 struct drm_i915_private *dev_priv = dev->dev_private;
13090 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
13091 DRM_INFO("applying pipe b force quirk\n");
13095 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
13097 static void quirk_ssc_force_disable(struct drm_device *dev)
13099 struct drm_i915_private *dev_priv = dev->dev_private;
13100 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
13101 DRM_INFO("applying lvds SSC disable quirk\n");
13105 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
13108 static void quirk_invert_brightness(struct drm_device *dev)
13110 struct drm_i915_private *dev_priv = dev->dev_private;
13111 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
13112 DRM_INFO("applying inverted panel brightness quirk\n");
13115 /* Some VBT's incorrectly indicate no backlight is present */
13116 static void quirk_backlight_present(struct drm_device *dev)
13118 struct drm_i915_private *dev_priv = dev->dev_private;
13119 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
13120 DRM_INFO("applying backlight present quirk\n");
13123 struct intel_quirk {
13125 int subsystem_vendor;
13126 int subsystem_device;
13127 void (*hook)(struct drm_device *dev);
13130 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
13131 struct intel_dmi_quirk {
13132 void (*hook)(struct drm_device *dev);
13133 const struct dmi_system_id (*dmi_id_list)[];
13136 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
13138 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
13142 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
13144 .dmi_id_list = &(const struct dmi_system_id[]) {
13146 .callback = intel_dmi_reverse_brightness,
13147 .ident = "NCR Corporation",
13148 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
13149 DMI_MATCH(DMI_PRODUCT_NAME, ""),
13152 { } /* terminating entry */
13154 .hook = quirk_invert_brightness,
13158 static struct intel_quirk intel_quirks[] = {
13159 /* HP Mini needs pipe A force quirk (LP: #322104) */
13160 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
13162 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
13163 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
13165 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
13166 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
13168 /* 830 needs to leave pipe A & dpll A up */
13169 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
13171 /* 830 needs to leave pipe B & dpll B up */
13172 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
13174 /* Lenovo U160 cannot use SSC on LVDS */
13175 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
13177 /* Sony Vaio Y cannot use SSC on LVDS */
13178 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
13180 /* Acer Aspire 5734Z must invert backlight brightness */
13181 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
13183 /* Acer/eMachines G725 */
13184 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
13186 /* Acer/eMachines e725 */
13187 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
13189 /* Acer/Packard Bell NCL20 */
13190 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
13192 /* Acer Aspire 4736Z */
13193 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
13195 /* Acer Aspire 5336 */
13196 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
13198 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
13199 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
13201 /* Acer C720 Chromebook (Core i3 4005U) */
13202 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
13204 /* Apple Macbook 2,1 (Core 2 T7400) */
13205 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
13207 /* Toshiba CB35 Chromebook (Celeron 2955U) */
13208 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
13210 /* HP Chromebook 14 (Celeron 2955U) */
13211 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
13214 static void intel_init_quirks(struct drm_device *dev)
13216 struct pci_dev *d = dev->pdev;
13219 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
13220 struct intel_quirk *q = &intel_quirks[i];
13222 if (d->device == q->device &&
13223 (d->subsystem_vendor == q->subsystem_vendor ||
13224 q->subsystem_vendor == PCI_ANY_ID) &&
13225 (d->subsystem_device == q->subsystem_device ||
13226 q->subsystem_device == PCI_ANY_ID))
13229 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
13230 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
13231 intel_dmi_quirks[i].hook(dev);
13235 /* Disable the VGA plane that we never use */
13236 static void i915_disable_vga(struct drm_device *dev)
13238 struct drm_i915_private *dev_priv = dev->dev_private;
13240 u32 vga_reg = i915_vgacntrl_reg(dev);
13242 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
13243 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
13244 outb(SR01, VGA_SR_INDEX);
13245 sr1 = inb(VGA_SR_DATA);
13246 outb(sr1 | 1<<5, VGA_SR_DATA);
13247 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
13250 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
13251 POSTING_READ(vga_reg);
13254 void intel_modeset_init_hw(struct drm_device *dev)
13256 intel_prepare_ddi(dev);
13258 if (IS_VALLEYVIEW(dev))
13259 vlv_update_cdclk(dev);
13261 intel_init_clock_gating(dev);
13263 intel_enable_gt_powersave(dev);
13266 void intel_modeset_init(struct drm_device *dev)
13268 struct drm_i915_private *dev_priv = dev->dev_private;
13271 struct intel_crtc *crtc;
13273 drm_mode_config_init(dev);
13275 dev->mode_config.min_width = 0;
13276 dev->mode_config.min_height = 0;
13278 dev->mode_config.preferred_depth = 24;
13279 dev->mode_config.prefer_shadow = 1;
13281 dev->mode_config.allow_fb_modifiers = true;
13283 dev->mode_config.funcs = &intel_mode_funcs;
13285 intel_init_quirks(dev);
13287 intel_init_pm(dev);
13289 if (INTEL_INFO(dev)->num_pipes == 0)
13292 intel_init_display(dev);
13293 intel_init_audio(dev);
13295 if (IS_GEN2(dev)) {
13296 dev->mode_config.max_width = 2048;
13297 dev->mode_config.max_height = 2048;
13298 } else if (IS_GEN3(dev)) {
13299 dev->mode_config.max_width = 4096;
13300 dev->mode_config.max_height = 4096;
13302 dev->mode_config.max_width = 8192;
13303 dev->mode_config.max_height = 8192;
13306 if (IS_845G(dev) || IS_I865G(dev)) {
13307 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
13308 dev->mode_config.cursor_height = 1023;
13309 } else if (IS_GEN2(dev)) {
13310 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
13311 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
13313 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
13314 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
13317 dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
13319 DRM_DEBUG_KMS("%d display pipe%s available.\n",
13320 INTEL_INFO(dev)->num_pipes,
13321 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
13323 for_each_pipe(dev_priv, pipe) {
13324 intel_crtc_init(dev, pipe);
13325 for_each_sprite(pipe, sprite) {
13326 ret = intel_plane_init(dev, pipe, sprite);
13328 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
13329 pipe_name(pipe), sprite_name(pipe, sprite), ret);
13333 intel_init_dpio(dev);
13335 intel_shared_dpll_init(dev);
13337 /* Just disable it once at startup */
13338 i915_disable_vga(dev);
13339 intel_setup_outputs(dev);
13341 /* Just in case the BIOS is doing something questionable. */
13342 intel_fbc_disable(dev);
13344 drm_modeset_lock_all(dev);
13345 intel_modeset_setup_hw_state(dev, false);
13346 drm_modeset_unlock_all(dev);
13348 for_each_intel_crtc(dev, crtc) {
13353 * Note that reserving the BIOS fb up front prevents us
13354 * from stuffing other stolen allocations like the ring
13355 * on top. This prevents some ugliness at boot time, and
13356 * can even allow for smooth boot transitions if the BIOS
13357 * fb is large enough for the active pipe configuration.
13359 if (dev_priv->display.get_initial_plane_config) {
13360 dev_priv->display.get_initial_plane_config(crtc,
13361 &crtc->plane_config);
13363 * If the fb is shared between multiple heads, we'll
13364 * just get the first one.
13366 intel_find_plane_obj(crtc, &crtc->plane_config);
13371 static void intel_enable_pipe_a(struct drm_device *dev)
13373 struct intel_connector *connector;
13374 struct drm_connector *crt = NULL;
13375 struct intel_load_detect_pipe load_detect_temp;
13376 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
13378 /* We can't just switch on the pipe A, we need to set things up with a
13379 * proper mode and output configuration. As a gross hack, enable pipe A
13380 * by enabling the load detect pipe once. */
13381 list_for_each_entry(connector,
13382 &dev->mode_config.connector_list,
13384 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
13385 crt = &connector->base;
13393 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
13394 intel_release_load_detect_pipe(crt, &load_detect_temp);
13398 intel_check_plane_mapping(struct intel_crtc *crtc)
13400 struct drm_device *dev = crtc->base.dev;
13401 struct drm_i915_private *dev_priv = dev->dev_private;
13404 if (INTEL_INFO(dev)->num_pipes == 1)
13407 reg = DSPCNTR(!crtc->plane);
13408 val = I915_READ(reg);
13410 if ((val & DISPLAY_PLANE_ENABLE) &&
13411 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
13417 static void intel_sanitize_crtc(struct intel_crtc *crtc)
13419 struct drm_device *dev = crtc->base.dev;
13420 struct drm_i915_private *dev_priv = dev->dev_private;
13423 /* Clear any frame start delays used for debugging left by the BIOS */
13424 reg = PIPECONF(crtc->config->cpu_transcoder);
13425 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
13427 /* restore vblank interrupts to correct state */
13428 drm_crtc_vblank_reset(&crtc->base);
13429 if (crtc->active) {
13430 update_scanline_offset(crtc);
13431 drm_crtc_vblank_on(&crtc->base);
13434 /* We need to sanitize the plane -> pipe mapping first because this will
13435 * disable the crtc (and hence change the state) if it is wrong. Note
13436 * that gen4+ has a fixed plane -> pipe mapping. */
13437 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
13438 struct intel_connector *connector;
13441 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
13442 crtc->base.base.id);
13444 /* Pipe has the wrong plane attached and the plane is active.
13445 * Temporarily change the plane mapping and disable everything
13447 plane = crtc->plane;
13448 crtc->plane = !plane;
13449 crtc->primary_enabled = true;
13450 dev_priv->display.crtc_disable(&crtc->base);
13451 crtc->plane = plane;
13453 /* ... and break all links. */
13454 list_for_each_entry(connector, &dev->mode_config.connector_list,
13456 if (connector->encoder->base.crtc != &crtc->base)
13459 connector->base.dpms = DRM_MODE_DPMS_OFF;
13460 connector->base.encoder = NULL;
13462 /* multiple connectors may have the same encoder:
13463 * handle them and break crtc link separately */
13464 list_for_each_entry(connector, &dev->mode_config.connector_list,
13466 if (connector->encoder->base.crtc == &crtc->base) {
13467 connector->encoder->base.crtc = NULL;
13468 connector->encoder->connectors_active = false;
13471 WARN_ON(crtc->active);
13472 crtc->base.state->enable = false;
13473 crtc->base.enabled = false;
13476 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
13477 crtc->pipe == PIPE_A && !crtc->active) {
13478 /* BIOS forgot to enable pipe A, this mostly happens after
13479 * resume. Force-enable the pipe to fix this, the update_dpms
13480 * call below we restore the pipe to the right state, but leave
13481 * the required bits on. */
13482 intel_enable_pipe_a(dev);
13485 /* Adjust the state of the output pipe according to whether we
13486 * have active connectors/encoders. */
13487 intel_crtc_update_dpms(&crtc->base);
13489 if (crtc->active != crtc->base.state->enable) {
13490 struct intel_encoder *encoder;
13492 /* This can happen either due to bugs in the get_hw_state
13493 * functions or because the pipe is force-enabled due to the
13495 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
13496 crtc->base.base.id,
13497 crtc->base.state->enable ? "enabled" : "disabled",
13498 crtc->active ? "enabled" : "disabled");
13500 crtc->base.state->enable = crtc->active;
13501 crtc->base.enabled = crtc->active;
13503 /* Because we only establish the connector -> encoder ->
13504 * crtc links if something is active, this means the
13505 * crtc is now deactivated. Break the links. connector
13506 * -> encoder links are only establish when things are
13507 * actually up, hence no need to break them. */
13508 WARN_ON(crtc->active);
13510 for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
13511 WARN_ON(encoder->connectors_active);
13512 encoder->base.crtc = NULL;
13516 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
13518 * We start out with underrun reporting disabled to avoid races.
13519 * For correct bookkeeping mark this on active crtcs.
13521 * Also on gmch platforms we dont have any hardware bits to
13522 * disable the underrun reporting. Which means we need to start
13523 * out with underrun reporting disabled also on inactive pipes,
13524 * since otherwise we'll complain about the garbage we read when
13525 * e.g. coming up after runtime pm.
13527 * No protection against concurrent access is required - at
13528 * worst a fifo underrun happens which also sets this to false.
13530 crtc->cpu_fifo_underrun_disabled = true;
13531 crtc->pch_fifo_underrun_disabled = true;
13535 static void intel_sanitize_encoder(struct intel_encoder *encoder)
13537 struct intel_connector *connector;
13538 struct drm_device *dev = encoder->base.dev;
13540 /* We need to check both for a crtc link (meaning that the
13541 * encoder is active and trying to read from a pipe) and the
13542 * pipe itself being active. */
13543 bool has_active_crtc = encoder->base.crtc &&
13544 to_intel_crtc(encoder->base.crtc)->active;
13546 if (encoder->connectors_active && !has_active_crtc) {
13547 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
13548 encoder->base.base.id,
13549 encoder->base.name);
13551 /* Connector is active, but has no active pipe. This is
13552 * fallout from our resume register restoring. Disable
13553 * the encoder manually again. */
13554 if (encoder->base.crtc) {
13555 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
13556 encoder->base.base.id,
13557 encoder->base.name);
13558 encoder->disable(encoder);
13559 if (encoder->post_disable)
13560 encoder->post_disable(encoder);
13562 encoder->base.crtc = NULL;
13563 encoder->connectors_active = false;
13565 /* Inconsistent output/port/pipe state happens presumably due to
13566 * a bug in one of the get_hw_state functions. Or someplace else
13567 * in our code, like the register restore mess on resume. Clamp
13568 * things to off as a safer default. */
13569 list_for_each_entry(connector,
13570 &dev->mode_config.connector_list,
13572 if (connector->encoder != encoder)
13574 connector->base.dpms = DRM_MODE_DPMS_OFF;
13575 connector->base.encoder = NULL;
13578 /* Enabled encoders without active connectors will be fixed in
13579 * the crtc fixup. */
13582 void i915_redisable_vga_power_on(struct drm_device *dev)
13584 struct drm_i915_private *dev_priv = dev->dev_private;
13585 u32 vga_reg = i915_vgacntrl_reg(dev);
13587 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
13588 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
13589 i915_disable_vga(dev);
13593 void i915_redisable_vga(struct drm_device *dev)
13595 struct drm_i915_private *dev_priv = dev->dev_private;
13597 /* This function can be called both from intel_modeset_setup_hw_state or
13598 * at a very early point in our resume sequence, where the power well
13599 * structures are not yet restored. Since this function is at a very
13600 * paranoid "someone might have enabled VGA while we were not looking"
13601 * level, just check if the power well is enabled instead of trying to
13602 * follow the "don't touch the power well if we don't need it" policy
13603 * the rest of the driver uses. */
13604 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
13607 i915_redisable_vga_power_on(dev);
13610 static bool primary_get_hw_state(struct intel_crtc *crtc)
13612 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
13617 return I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE;
13620 static void intel_modeset_readout_hw_state(struct drm_device *dev)
13622 struct drm_i915_private *dev_priv = dev->dev_private;
13624 struct intel_crtc *crtc;
13625 struct intel_encoder *encoder;
13626 struct intel_connector *connector;
13629 for_each_intel_crtc(dev, crtc) {
13630 memset(crtc->config, 0, sizeof(*crtc->config));
13632 crtc->config->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
13634 crtc->active = dev_priv->display.get_pipe_config(crtc,
13637 crtc->base.state->enable = crtc->active;
13638 crtc->base.enabled = crtc->active;
13639 crtc->primary_enabled = primary_get_hw_state(crtc);
13641 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
13642 crtc->base.base.id,
13643 crtc->active ? "enabled" : "disabled");
13646 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
13647 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
13649 pll->on = pll->get_hw_state(dev_priv, pll,
13650 &pll->config.hw_state);
13652 pll->config.crtc_mask = 0;
13653 for_each_intel_crtc(dev, crtc) {
13654 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
13656 pll->config.crtc_mask |= 1 << crtc->pipe;
13660 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
13661 pll->name, pll->config.crtc_mask, pll->on);
13663 if (pll->config.crtc_mask)
13664 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
13667 for_each_intel_encoder(dev, encoder) {
13670 if (encoder->get_hw_state(encoder, &pipe)) {
13671 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
13672 encoder->base.crtc = &crtc->base;
13673 encoder->get_config(encoder, crtc->config);
13675 encoder->base.crtc = NULL;
13678 encoder->connectors_active = false;
13679 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
13680 encoder->base.base.id,
13681 encoder->base.name,
13682 encoder->base.crtc ? "enabled" : "disabled",
13686 list_for_each_entry(connector, &dev->mode_config.connector_list,
13688 if (connector->get_hw_state(connector)) {
13689 connector->base.dpms = DRM_MODE_DPMS_ON;
13690 connector->encoder->connectors_active = true;
13691 connector->base.encoder = &connector->encoder->base;
13693 connector->base.dpms = DRM_MODE_DPMS_OFF;
13694 connector->base.encoder = NULL;
13696 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
13697 connector->base.base.id,
13698 connector->base.name,
13699 connector->base.encoder ? "enabled" : "disabled");
13703 /* Scan out the current hw modeset state, sanitizes it and maps it into the drm
13704 * and i915 state tracking structures. */
13705 void intel_modeset_setup_hw_state(struct drm_device *dev,
13706 bool force_restore)
13708 struct drm_i915_private *dev_priv = dev->dev_private;
13710 struct intel_crtc *crtc;
13711 struct intel_encoder *encoder;
13714 intel_modeset_readout_hw_state(dev);
13717 * Now that we have the config, copy it to each CRTC struct
13718 * Note that this could go away if we move to using crtc_config
13719 * checking everywhere.
13721 for_each_intel_crtc(dev, crtc) {
13722 if (crtc->active && i915.fastboot) {
13723 intel_mode_from_pipe_config(&crtc->base.mode,
13725 DRM_DEBUG_KMS("[CRTC:%d] found active mode: ",
13726 crtc->base.base.id);
13727 drm_mode_debug_printmodeline(&crtc->base.mode);
13731 /* HW state is read out, now we need to sanitize this mess. */
13732 for_each_intel_encoder(dev, encoder) {
13733 intel_sanitize_encoder(encoder);
13736 for_each_pipe(dev_priv, pipe) {
13737 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
13738 intel_sanitize_crtc(crtc);
13739 intel_dump_pipe_config(crtc, crtc->config,
13740 "[setup_hw_state]");
13743 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
13744 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
13746 if (!pll->on || pll->active)
13749 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
13751 pll->disable(dev_priv, pll);
13756 skl_wm_get_hw_state(dev);
13757 else if (HAS_PCH_SPLIT(dev))
13758 ilk_wm_get_hw_state(dev);
13760 if (force_restore) {
13761 i915_redisable_vga(dev);
13764 * We need to use raw interfaces for restoring state to avoid
13765 * checking (bogus) intermediate states.
13767 for_each_pipe(dev_priv, pipe) {
13768 struct drm_crtc *crtc =
13769 dev_priv->pipe_to_crtc_mapping[pipe];
13771 intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y,
13772 crtc->primary->fb);
13775 intel_modeset_update_staged_output_state(dev);
13778 intel_modeset_check_state(dev);
13781 void intel_modeset_gem_init(struct drm_device *dev)
13783 struct drm_i915_private *dev_priv = dev->dev_private;
13784 struct drm_crtc *c;
13785 struct drm_i915_gem_object *obj;
13787 mutex_lock(&dev->struct_mutex);
13788 intel_init_gt_powersave(dev);
13789 mutex_unlock(&dev->struct_mutex);
13792 * There may be no VBT; and if the BIOS enabled SSC we can
13793 * just keep using it to avoid unnecessary flicker. Whereas if the
13794 * BIOS isn't using it, don't assume it will work even if the VBT
13795 * indicates as much.
13797 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
13798 dev_priv->vbt.lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
13801 intel_modeset_init_hw(dev);
13803 intel_setup_overlay(dev);
13806 * Make sure any fbs we allocated at startup are properly
13807 * pinned & fenced. When we do the allocation it's too early
13810 mutex_lock(&dev->struct_mutex);
13811 for_each_crtc(dev, c) {
13812 obj = intel_fb_obj(c->primary->fb);
13816 if (intel_pin_and_fence_fb_obj(c->primary,
13819 DRM_ERROR("failed to pin boot fb on pipe %d\n",
13820 to_intel_crtc(c)->pipe);
13821 drm_framebuffer_unreference(c->primary->fb);
13822 c->primary->fb = NULL;
13823 update_state_fb(c->primary);
13826 mutex_unlock(&dev->struct_mutex);
13828 intel_backlight_register(dev);
13831 void intel_connector_unregister(struct intel_connector *intel_connector)
13833 struct drm_connector *connector = &intel_connector->base;
13835 intel_panel_destroy_backlight(connector);
13836 drm_connector_unregister(connector);
13839 void intel_modeset_cleanup(struct drm_device *dev)
13841 struct drm_i915_private *dev_priv = dev->dev_private;
13842 struct drm_connector *connector;
13844 intel_disable_gt_powersave(dev);
13846 intel_backlight_unregister(dev);
13849 * Interrupts and polling as the first thing to avoid creating havoc.
13850 * Too much stuff here (turning of connectors, ...) would
13851 * experience fancy races otherwise.
13853 intel_irq_uninstall(dev_priv);
13856 * Due to the hpd irq storm handling the hotplug work can re-arm the
13857 * poll handlers. Hence disable polling after hpd handling is shut down.
13859 drm_kms_helper_poll_fini(dev);
13861 mutex_lock(&dev->struct_mutex);
13863 intel_unregister_dsm_handler();
13865 intel_fbc_disable(dev);
13867 ironlake_teardown_rc6(dev);
13869 mutex_unlock(&dev->struct_mutex);
13871 /* flush any delayed tasks or pending work */
13872 flush_scheduled_work();
13874 /* destroy the backlight and sysfs files before encoders/connectors */
13875 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
13876 struct intel_connector *intel_connector;
13878 intel_connector = to_intel_connector(connector);
13879 intel_connector->unregister(intel_connector);
13882 drm_mode_config_cleanup(dev);
13884 intel_cleanup_overlay(dev);
13886 mutex_lock(&dev->struct_mutex);
13887 intel_cleanup_gt_powersave(dev);
13888 mutex_unlock(&dev->struct_mutex);
13892 * Return which encoder is currently attached for connector.
13894 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
13896 return &intel_attached_encoder(connector)->base;
13899 void intel_connector_attach_encoder(struct intel_connector *connector,
13900 struct intel_encoder *encoder)
13902 connector->encoder = encoder;
13903 drm_mode_connector_attach_encoder(&connector->base,
13908 * set vga decode state - true == enable VGA decode
13910 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
13912 struct drm_i915_private *dev_priv = dev->dev_private;
13913 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
13916 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
13917 DRM_ERROR("failed to read control word\n");
13921 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
13925 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
13927 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
13929 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
13930 DRM_ERROR("failed to write control word\n");
13937 struct intel_display_error_state {
13939 u32 power_well_driver;
13941 int num_transcoders;
13943 struct intel_cursor_error_state {
13948 } cursor[I915_MAX_PIPES];
13950 struct intel_pipe_error_state {
13951 bool power_domain_on;
13954 } pipe[I915_MAX_PIPES];
13956 struct intel_plane_error_state {
13964 } plane[I915_MAX_PIPES];
13966 struct intel_transcoder_error_state {
13967 bool power_domain_on;
13968 enum transcoder cpu_transcoder;
13981 struct intel_display_error_state *
13982 intel_display_capture_error_state(struct drm_device *dev)
13984 struct drm_i915_private *dev_priv = dev->dev_private;
13985 struct intel_display_error_state *error;
13986 int transcoders[] = {
13994 if (INTEL_INFO(dev)->num_pipes == 0)
13997 error = kzalloc(sizeof(*error), GFP_ATOMIC);
14001 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
14002 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
14004 for_each_pipe(dev_priv, i) {
14005 error->pipe[i].power_domain_on =
14006 __intel_display_power_is_enabled(dev_priv,
14007 POWER_DOMAIN_PIPE(i));
14008 if (!error->pipe[i].power_domain_on)
14011 error->cursor[i].control = I915_READ(CURCNTR(i));
14012 error->cursor[i].position = I915_READ(CURPOS(i));
14013 error->cursor[i].base = I915_READ(CURBASE(i));
14015 error->plane[i].control = I915_READ(DSPCNTR(i));
14016 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
14017 if (INTEL_INFO(dev)->gen <= 3) {
14018 error->plane[i].size = I915_READ(DSPSIZE(i));
14019 error->plane[i].pos = I915_READ(DSPPOS(i));
14021 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
14022 error->plane[i].addr = I915_READ(DSPADDR(i));
14023 if (INTEL_INFO(dev)->gen >= 4) {
14024 error->plane[i].surface = I915_READ(DSPSURF(i));
14025 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
14028 error->pipe[i].source = I915_READ(PIPESRC(i));
14030 if (HAS_GMCH_DISPLAY(dev))
14031 error->pipe[i].stat = I915_READ(PIPESTAT(i));
14034 error->num_transcoders = INTEL_INFO(dev)->num_pipes;
14035 if (HAS_DDI(dev_priv->dev))
14036 error->num_transcoders++; /* Account for eDP. */
14038 for (i = 0; i < error->num_transcoders; i++) {
14039 enum transcoder cpu_transcoder = transcoders[i];
14041 error->transcoder[i].power_domain_on =
14042 __intel_display_power_is_enabled(dev_priv,
14043 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
14044 if (!error->transcoder[i].power_domain_on)
14047 error->transcoder[i].cpu_transcoder = cpu_transcoder;
14049 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
14050 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
14051 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
14052 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
14053 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
14054 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
14055 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
14061 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
14064 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
14065 struct drm_device *dev,
14066 struct intel_display_error_state *error)
14068 struct drm_i915_private *dev_priv = dev->dev_private;
14074 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
14075 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
14076 err_printf(m, "PWR_WELL_CTL2: %08x\n",
14077 error->power_well_driver);
14078 for_each_pipe(dev_priv, i) {
14079 err_printf(m, "Pipe [%d]:\n", i);
14080 err_printf(m, " Power: %s\n",
14081 error->pipe[i].power_domain_on ? "on" : "off");
14082 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
14083 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
14085 err_printf(m, "Plane [%d]:\n", i);
14086 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
14087 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
14088 if (INTEL_INFO(dev)->gen <= 3) {
14089 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
14090 err_printf(m, " POS: %08x\n", error->plane[i].pos);
14092 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
14093 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
14094 if (INTEL_INFO(dev)->gen >= 4) {
14095 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
14096 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
14099 err_printf(m, "Cursor [%d]:\n", i);
14100 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
14101 err_printf(m, " POS: %08x\n", error->cursor[i].position);
14102 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
14105 for (i = 0; i < error->num_transcoders; i++) {
14106 err_printf(m, "CPU transcoder: %c\n",
14107 transcoder_name(error->transcoder[i].cpu_transcoder));
14108 err_printf(m, " Power: %s\n",
14109 error->transcoder[i].power_domain_on ? "on" : "off");
14110 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
14111 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
14112 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
14113 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
14114 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
14115 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
14116 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
14120 void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
14122 struct intel_crtc *crtc;
14124 for_each_intel_crtc(dev, crtc) {
14125 struct intel_unpin_work *work;
14127 spin_lock_irq(&dev->event_lock);
14129 work = crtc->unpin_work;
14131 if (work && work->event &&
14132 work->event->base.file_priv == file) {
14133 kfree(work->event);
14134 work->event = NULL;
14137 spin_unlock_irq(&dev->event_lock);