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/i2c.h>
29 #include <linux/slab.h>
31 #include <drm/drm_atomic_helper.h>
32 #include <drm/drm_crtc.h>
33 #include <drm/drm_crtc_helper.h>
34 #include <drm/drm_edid.h>
35 #include "intel_drv.h"
36 #include <drm/i915_drm.h>
39 /* Here's the desired hotplug mode */
40 #define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
41 ADPA_CRT_HOTPLUG_WARMUP_10MS | \
42 ADPA_CRT_HOTPLUG_SAMPLE_4S | \
43 ADPA_CRT_HOTPLUG_VOLTAGE_50 | \
44 ADPA_CRT_HOTPLUG_VOLREF_325MV | \
45 ADPA_CRT_HOTPLUG_ENABLE)
48 struct intel_encoder base;
49 /* DPMS state is stored in the connector, which we need in the
50 * encoder's enable/disable callbacks */
51 struct intel_connector *connector;
52 bool force_hotplug_required;
56 static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
58 return container_of(encoder, struct intel_crt, base);
61 static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
63 return intel_encoder_to_crt(intel_attached_encoder(connector));
66 static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
69 struct drm_device *dev = encoder->base.dev;
70 struct drm_i915_private *dev_priv = to_i915(dev);
71 struct intel_crt *crt = intel_encoder_to_crt(encoder);
72 enum intel_display_power_domain power_domain;
76 power_domain = intel_display_port_power_domain(encoder);
77 if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
82 tmp = I915_READ(crt->adpa_reg);
84 if (!(tmp & ADPA_DAC_ENABLE))
88 *pipe = PORT_TO_PIPE_CPT(tmp);
90 *pipe = PORT_TO_PIPE(tmp);
94 intel_display_power_put(dev_priv, power_domain);
99 static unsigned int intel_crt_get_flags(struct intel_encoder *encoder)
101 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
102 struct intel_crt *crt = intel_encoder_to_crt(encoder);
105 tmp = I915_READ(crt->adpa_reg);
107 if (tmp & ADPA_HSYNC_ACTIVE_HIGH)
108 flags |= DRM_MODE_FLAG_PHSYNC;
110 flags |= DRM_MODE_FLAG_NHSYNC;
112 if (tmp & ADPA_VSYNC_ACTIVE_HIGH)
113 flags |= DRM_MODE_FLAG_PVSYNC;
115 flags |= DRM_MODE_FLAG_NVSYNC;
120 static void intel_crt_get_config(struct intel_encoder *encoder,
121 struct intel_crtc_state *pipe_config)
123 pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);
125 pipe_config->base.adjusted_mode.crtc_clock = pipe_config->port_clock;
128 static void hsw_crt_get_config(struct intel_encoder *encoder,
129 struct intel_crtc_state *pipe_config)
131 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
133 intel_ddi_get_config(encoder, pipe_config);
135 pipe_config->base.adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC |
136 DRM_MODE_FLAG_NHSYNC |
137 DRM_MODE_FLAG_PVSYNC |
138 DRM_MODE_FLAG_NVSYNC);
139 pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);
141 pipe_config->base.adjusted_mode.crtc_clock = lpt_get_iclkip(dev_priv);
144 /* Note: The caller is required to filter out dpms modes not supported by the
146 static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode)
148 struct drm_device *dev = encoder->base.dev;
149 struct drm_i915_private *dev_priv = to_i915(dev);
150 struct intel_crt *crt = intel_encoder_to_crt(encoder);
151 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
152 const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
155 if (INTEL_INFO(dev)->gen >= 5)
156 adpa = ADPA_HOTPLUG_BITS;
160 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
161 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
162 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
163 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
165 /* For CPT allow 3 pipe config, for others just use A or B */
166 if (HAS_PCH_LPT(dev))
167 ; /* Those bits don't exist here */
168 else if (HAS_PCH_CPT(dev))
169 adpa |= PORT_TRANS_SEL_CPT(crtc->pipe);
170 else if (crtc->pipe == 0)
171 adpa |= ADPA_PIPE_A_SELECT;
173 adpa |= ADPA_PIPE_B_SELECT;
175 if (!HAS_PCH_SPLIT(dev))
176 I915_WRITE(BCLRPAT(crtc->pipe), 0);
179 case DRM_MODE_DPMS_ON:
180 adpa |= ADPA_DAC_ENABLE;
182 case DRM_MODE_DPMS_STANDBY:
183 adpa |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
185 case DRM_MODE_DPMS_SUSPEND:
186 adpa |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
188 case DRM_MODE_DPMS_OFF:
189 adpa |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
193 I915_WRITE(crt->adpa_reg, adpa);
196 static void intel_disable_crt(struct intel_encoder *encoder)
198 intel_crt_set_dpms(encoder, DRM_MODE_DPMS_OFF);
201 static void pch_disable_crt(struct intel_encoder *encoder)
205 static void pch_post_disable_crt(struct intel_encoder *encoder)
207 intel_disable_crt(encoder);
210 static void intel_enable_crt(struct intel_encoder *encoder)
212 intel_crt_set_dpms(encoder, DRM_MODE_DPMS_ON);
215 static enum drm_mode_status
216 intel_crt_mode_valid(struct drm_connector *connector,
217 struct drm_display_mode *mode)
219 struct drm_device *dev = connector->dev;
220 int max_dotclk = to_i915(dev)->max_dotclk_freq;
223 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
224 return MODE_NO_DBLESCAN;
226 if (mode->clock < 25000)
227 return MODE_CLOCK_LOW;
229 if (HAS_PCH_LPT(dev))
231 else if (IS_VALLEYVIEW(dev))
233 * 270 MHz due to current DPLL limits,
234 * DAC limit supposedly 355 MHz.
237 else if (IS_GEN3(dev) || IS_GEN4(dev))
241 if (mode->clock > max_clock)
242 return MODE_CLOCK_HIGH;
244 if (mode->clock > max_dotclk)
245 return MODE_CLOCK_HIGH;
247 /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
248 if (HAS_PCH_LPT(dev) &&
249 (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
250 return MODE_CLOCK_HIGH;
255 static bool intel_crt_compute_config(struct intel_encoder *encoder,
256 struct intel_crtc_state *pipe_config)
258 struct drm_device *dev = encoder->base.dev;
260 if (HAS_PCH_SPLIT(dev))
261 pipe_config->has_pch_encoder = true;
263 /* LPT FDI RX only supports 8bpc. */
264 if (HAS_PCH_LPT(dev)) {
265 if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
266 DRM_DEBUG_KMS("LPT only supports 24bpp\n");
270 pipe_config->pipe_bpp = 24;
273 /* FDI must always be 2.7 GHz */
275 pipe_config->port_clock = 135000 * 2;
280 static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
282 struct drm_device *dev = connector->dev;
283 struct intel_crt *crt = intel_attached_crt(connector);
284 struct drm_i915_private *dev_priv = to_i915(dev);
288 /* The first time through, trigger an explicit detection cycle */
289 if (crt->force_hotplug_required) {
290 bool turn_off_dac = HAS_PCH_SPLIT(dev);
293 crt->force_hotplug_required = 0;
295 save_adpa = adpa = I915_READ(crt->adpa_reg);
296 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
298 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
300 adpa &= ~ADPA_DAC_ENABLE;
302 I915_WRITE(crt->adpa_reg, adpa);
304 if (intel_wait_for_register(dev_priv,
306 ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0,
308 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
311 I915_WRITE(crt->adpa_reg, save_adpa);
312 POSTING_READ(crt->adpa_reg);
316 /* Check the status to see if both blue and green are on now */
317 adpa = I915_READ(crt->adpa_reg);
318 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
322 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);
327 static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
329 struct drm_device *dev = connector->dev;
330 struct intel_crt *crt = intel_attached_crt(connector);
331 struct drm_i915_private *dev_priv = to_i915(dev);
338 * Doing a force trigger causes a hpd interrupt to get sent, which can
339 * get us stuck in a loop if we're polling:
340 * - We enable power wells and reset the ADPA
341 * - output_poll_exec does force probe on VGA, triggering a hpd
342 * - HPD handler waits for poll to unlock dev->mode_config.mutex
343 * - output_poll_exec shuts off the ADPA, unlocks
344 * dev->mode_config.mutex
345 * - HPD handler runs, resets ADPA and brings us back to the start
347 * Just disable HPD interrupts here to prevent this
349 reenable_hpd = intel_hpd_disable(dev_priv, crt->base.hpd_pin);
351 save_adpa = adpa = I915_READ(crt->adpa_reg);
352 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
354 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
356 I915_WRITE(crt->adpa_reg, adpa);
358 if (intel_wait_for_register(dev_priv,
360 ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0,
362 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
363 I915_WRITE(crt->adpa_reg, save_adpa);
366 /* Check the status to see if both blue and green are on now */
367 adpa = I915_READ(crt->adpa_reg);
368 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
373 DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);
376 intel_hpd_enable(dev_priv, crt->base.hpd_pin);
382 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
384 * Not for i915G/i915GM
386 * \return true if CRT is connected.
387 * \return false if CRT is disconnected.
389 static bool intel_crt_detect_hotplug(struct drm_connector *connector)
391 struct drm_device *dev = connector->dev;
392 struct drm_i915_private *dev_priv = to_i915(dev);
397 if (HAS_PCH_SPLIT(dev))
398 return intel_ironlake_crt_detect_hotplug(connector);
400 if (IS_VALLEYVIEW(dev))
401 return valleyview_crt_detect_hotplug(connector);
404 * On 4 series desktop, CRT detect sequence need to be done twice
405 * to get a reliable result.
408 if (IS_G4X(dev) && !IS_GM45(dev))
413 for (i = 0; i < tries ; i++) {
414 /* turn on the FORCE_DETECT */
415 i915_hotplug_interrupt_update(dev_priv,
416 CRT_HOTPLUG_FORCE_DETECT,
417 CRT_HOTPLUG_FORCE_DETECT);
418 /* wait for FORCE_DETECT to go off */
419 if (intel_wait_for_register(dev_priv, PORT_HOTPLUG_EN,
420 CRT_HOTPLUG_FORCE_DETECT, 0,
422 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
425 stat = I915_READ(PORT_HOTPLUG_STAT);
426 if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
429 /* clear the interrupt we just generated, if any */
430 I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
432 i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0);
437 static struct edid *intel_crt_get_edid(struct drm_connector *connector,
438 struct i2c_adapter *i2c)
442 edid = drm_get_edid(connector, i2c);
444 if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
445 DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
446 intel_gmbus_force_bit(i2c, true);
447 edid = drm_get_edid(connector, i2c);
448 intel_gmbus_force_bit(i2c, false);
454 /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
455 static int intel_crt_ddc_get_modes(struct drm_connector *connector,
456 struct i2c_adapter *adapter)
461 edid = intel_crt_get_edid(connector, adapter);
465 ret = intel_connector_update_modes(connector, edid);
471 static bool intel_crt_detect_ddc(struct drm_connector *connector)
473 struct intel_crt *crt = intel_attached_crt(connector);
474 struct drm_i915_private *dev_priv = to_i915(crt->base.base.dev);
476 struct i2c_adapter *i2c;
478 BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
480 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
481 edid = intel_crt_get_edid(connector, i2c);
484 bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
487 * This may be a DVI-I connector with a shared DDC
488 * link between analog and digital outputs, so we
489 * have to check the EDID input spec of the attached device.
492 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
496 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
498 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
506 static enum drm_connector_status
507 intel_crt_load_detect(struct intel_crt *crt, uint32_t pipe)
509 struct drm_device *dev = crt->base.base.dev;
510 struct drm_i915_private *dev_priv = to_i915(dev);
511 uint32_t save_bclrpat;
512 uint32_t save_vtotal;
513 uint32_t vtotal, vactive;
515 uint32_t vblank, vblank_start, vblank_end;
517 i915_reg_t bclrpat_reg, vtotal_reg,
518 vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg;
520 enum drm_connector_status status;
522 DRM_DEBUG_KMS("starting load-detect on CRT\n");
524 bclrpat_reg = BCLRPAT(pipe);
525 vtotal_reg = VTOTAL(pipe);
526 vblank_reg = VBLANK(pipe);
527 vsync_reg = VSYNC(pipe);
528 pipeconf_reg = PIPECONF(pipe);
529 pipe_dsl_reg = PIPEDSL(pipe);
531 save_bclrpat = I915_READ(bclrpat_reg);
532 save_vtotal = I915_READ(vtotal_reg);
533 vblank = I915_READ(vblank_reg);
535 vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
536 vactive = (save_vtotal & 0x7ff) + 1;
538 vblank_start = (vblank & 0xfff) + 1;
539 vblank_end = ((vblank >> 16) & 0xfff) + 1;
541 /* Set the border color to purple. */
542 I915_WRITE(bclrpat_reg, 0x500050);
545 uint32_t pipeconf = I915_READ(pipeconf_reg);
546 I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
547 POSTING_READ(pipeconf_reg);
548 /* Wait for next Vblank to substitue
549 * border color for Color info */
550 intel_wait_for_vblank(dev, pipe);
551 st00 = I915_READ8(_VGA_MSR_WRITE);
552 status = ((st00 & (1 << 4)) != 0) ?
553 connector_status_connected :
554 connector_status_disconnected;
556 I915_WRITE(pipeconf_reg, pipeconf);
558 bool restore_vblank = false;
562 * If there isn't any border, add some.
563 * Yes, this will flicker
565 if (vblank_start <= vactive && vblank_end >= vtotal) {
566 uint32_t vsync = I915_READ(vsync_reg);
567 uint32_t vsync_start = (vsync & 0xffff) + 1;
569 vblank_start = vsync_start;
570 I915_WRITE(vblank_reg,
572 ((vblank_end - 1) << 16));
573 restore_vblank = true;
575 /* sample in the vertical border, selecting the larger one */
576 if (vblank_start - vactive >= vtotal - vblank_end)
577 vsample = (vblank_start + vactive) >> 1;
579 vsample = (vtotal + vblank_end) >> 1;
582 * Wait for the border to be displayed
584 while (I915_READ(pipe_dsl_reg) >= vactive)
586 while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
589 * Watch ST00 for an entire scanline
595 /* Read the ST00 VGA status register */
596 st00 = I915_READ8(_VGA_MSR_WRITE);
599 } while ((I915_READ(pipe_dsl_reg) == dsl));
601 /* restore vblank if necessary */
603 I915_WRITE(vblank_reg, vblank);
605 * If more than 3/4 of the scanline detected a monitor,
606 * then it is assumed to be present. This works even on i830,
607 * where there isn't any way to force the border color across
610 status = detect * 4 > count * 3 ?
611 connector_status_connected :
612 connector_status_disconnected;
615 /* Restore previous settings */
616 I915_WRITE(bclrpat_reg, save_bclrpat);
621 static enum drm_connector_status
622 intel_crt_detect(struct drm_connector *connector, bool force)
624 struct drm_device *dev = connector->dev;
625 struct drm_i915_private *dev_priv = to_i915(dev);
626 struct intel_crt *crt = intel_attached_crt(connector);
627 struct intel_encoder *intel_encoder = &crt->base;
628 enum intel_display_power_domain power_domain;
629 enum drm_connector_status status;
630 struct intel_load_detect_pipe tmp;
631 struct drm_modeset_acquire_ctx ctx;
633 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
634 connector->base.id, connector->name,
637 power_domain = intel_display_port_power_domain(intel_encoder);
638 intel_display_power_get(dev_priv, power_domain);
640 if (I915_HAS_HOTPLUG(dev)) {
641 /* We can not rely on the HPD pin always being correctly wired
642 * up, for example many KVM do not pass it through, and so
643 * only trust an assertion that the monitor is connected.
645 if (intel_crt_detect_hotplug(connector)) {
646 DRM_DEBUG_KMS("CRT detected via hotplug\n");
647 status = connector_status_connected;
650 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
653 if (intel_crt_detect_ddc(connector)) {
654 status = connector_status_connected;
658 /* Load detection is broken on HPD capable machines. Whoever wants a
659 * broken monitor (without edid) to work behind a broken kvm (that fails
660 * to have the right resistors for HP detection) needs to fix this up.
661 * For now just bail out. */
662 if (I915_HAS_HOTPLUG(dev) && !i915.load_detect_test) {
663 status = connector_status_disconnected;
668 status = connector->status;
672 drm_modeset_acquire_init(&ctx, 0);
674 /* for pre-945g platforms use load detect */
675 if (intel_get_load_detect_pipe(connector, NULL, &tmp, &ctx)) {
676 if (intel_crt_detect_ddc(connector))
677 status = connector_status_connected;
678 else if (INTEL_INFO(dev)->gen < 4)
679 status = intel_crt_load_detect(crt,
680 to_intel_crtc(connector->state->crtc)->pipe);
681 else if (i915.load_detect_test)
682 status = connector_status_disconnected;
684 status = connector_status_unknown;
685 intel_release_load_detect_pipe(connector, &tmp, &ctx);
687 status = connector_status_unknown;
689 drm_modeset_drop_locks(&ctx);
690 drm_modeset_acquire_fini(&ctx);
693 intel_display_power_put(dev_priv, power_domain);
697 static void intel_crt_destroy(struct drm_connector *connector)
699 drm_connector_cleanup(connector);
703 static int intel_crt_get_modes(struct drm_connector *connector)
705 struct drm_device *dev = connector->dev;
706 struct drm_i915_private *dev_priv = to_i915(dev);
707 struct intel_crt *crt = intel_attached_crt(connector);
708 struct intel_encoder *intel_encoder = &crt->base;
709 enum intel_display_power_domain power_domain;
711 struct i2c_adapter *i2c;
713 power_domain = intel_display_port_power_domain(intel_encoder);
714 intel_display_power_get(dev_priv, power_domain);
716 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
717 ret = intel_crt_ddc_get_modes(connector, i2c);
718 if (ret || !IS_G4X(dev))
721 /* Try to probe digital port for output in DVI-I -> VGA mode. */
722 i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB);
723 ret = intel_crt_ddc_get_modes(connector, i2c);
726 intel_display_power_put(dev_priv, power_domain);
731 static int intel_crt_set_property(struct drm_connector *connector,
732 struct drm_property *property,
738 void intel_crt_reset(struct drm_encoder *encoder)
740 struct drm_device *dev = encoder->dev;
741 struct drm_i915_private *dev_priv = to_i915(dev);
742 struct intel_crt *crt = intel_encoder_to_crt(to_intel_encoder(encoder));
744 if (INTEL_INFO(dev)->gen >= 5) {
747 adpa = I915_READ(crt->adpa_reg);
748 adpa &= ~ADPA_CRT_HOTPLUG_MASK;
749 adpa |= ADPA_HOTPLUG_BITS;
750 I915_WRITE(crt->adpa_reg, adpa);
751 POSTING_READ(crt->adpa_reg);
753 DRM_DEBUG_KMS("crt adpa set to 0x%x\n", adpa);
754 crt->force_hotplug_required = 1;
760 * Routines for controlling stuff on the analog port
763 static const struct drm_connector_funcs intel_crt_connector_funcs = {
764 .dpms = drm_atomic_helper_connector_dpms,
765 .detect = intel_crt_detect,
766 .fill_modes = drm_helper_probe_single_connector_modes,
767 .late_register = intel_connector_register,
768 .early_unregister = intel_connector_unregister,
769 .destroy = intel_crt_destroy,
770 .set_property = intel_crt_set_property,
771 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
772 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
773 .atomic_get_property = intel_connector_atomic_get_property,
776 static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
777 .mode_valid = intel_crt_mode_valid,
778 .get_modes = intel_crt_get_modes,
781 static const struct drm_encoder_funcs intel_crt_enc_funcs = {
782 .reset = intel_crt_reset,
783 .destroy = intel_encoder_destroy,
786 static int intel_no_crt_dmi_callback(const struct dmi_system_id *id)
788 DRM_INFO("Skipping CRT initialization for %s\n", id->ident);
792 static const struct dmi_system_id intel_no_crt[] = {
794 .callback = intel_no_crt_dmi_callback,
797 DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
798 DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
802 .callback = intel_no_crt_dmi_callback,
803 .ident = "DELL XPS 8700",
805 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
806 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 8700"),
812 void intel_crt_init(struct drm_device *dev)
814 struct drm_connector *connector;
815 struct intel_crt *crt;
816 struct intel_connector *intel_connector;
817 struct drm_i915_private *dev_priv = to_i915(dev);
821 /* Skip machines without VGA that falsely report hotplug events */
822 if (dmi_check_system(intel_no_crt))
825 if (HAS_PCH_SPLIT(dev))
827 else if (IS_VALLEYVIEW(dev))
832 adpa = I915_READ(adpa_reg);
833 if ((adpa & ADPA_DAC_ENABLE) == 0) {
835 * On some machines (some IVB at least) CRT can be
836 * fused off, but there's no known fuse bit to
837 * indicate that. On these machine the ADPA register
838 * works normally, except the DAC enable bit won't
839 * take. So the only way to tell is attempt to enable
840 * it and see what happens.
842 I915_WRITE(adpa_reg, adpa | ADPA_DAC_ENABLE |
843 ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
844 if ((I915_READ(adpa_reg) & ADPA_DAC_ENABLE) == 0)
846 I915_WRITE(adpa_reg, adpa);
849 crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
853 intel_connector = intel_connector_alloc();
854 if (!intel_connector) {
859 connector = &intel_connector->base;
860 crt->connector = intel_connector;
861 drm_connector_init(dev, &intel_connector->base,
862 &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
864 drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs,
865 DRM_MODE_ENCODER_DAC, "CRT");
867 intel_connector_attach_encoder(intel_connector, &crt->base);
869 crt->base.type = INTEL_OUTPUT_ANALOG;
870 crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI);
872 crt->base.crtc_mask = (1 << 0);
874 crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
877 connector->interlace_allowed = 0;
879 connector->interlace_allowed = 1;
880 connector->doublescan_allowed = 0;
882 crt->adpa_reg = adpa_reg;
884 crt->base.compute_config = intel_crt_compute_config;
885 if (HAS_PCH_SPLIT(dev)) {
886 crt->base.disable = pch_disable_crt;
887 crt->base.post_disable = pch_post_disable_crt;
889 crt->base.disable = intel_disable_crt;
891 crt->base.enable = intel_enable_crt;
892 if (I915_HAS_HOTPLUG(dev))
893 crt->base.hpd_pin = HPD_CRT;
895 crt->base.get_config = hsw_crt_get_config;
896 crt->base.get_hw_state = intel_ddi_get_hw_state;
898 crt->base.get_config = intel_crt_get_config;
899 crt->base.get_hw_state = intel_crt_get_hw_state;
901 intel_connector->get_hw_state = intel_connector_get_hw_state;
903 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
905 if (!I915_HAS_HOTPLUG(dev))
906 intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
909 * Configure the automatic hotplug detection stuff
911 crt->force_hotplug_required = 0;
914 * TODO: find a proper way to discover whether we need to set the the
915 * polarity and link reversal bits or not, instead of relying on the
918 if (HAS_PCH_LPT(dev)) {
919 u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT |
920 FDI_RX_LINK_REVERSAL_OVERRIDE;
922 dev_priv->fdi_rx_config = I915_READ(FDI_RX_CTL(PIPE_A)) & fdi_config;
925 intel_crt_reset(&crt->base.base);