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_crtc.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/drm_edid.h>
34 #include "intel_drv.h"
35 #include <drm/i915_drm.h>
38 /* Here's the desired hotplug mode */
39 #define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
40 ADPA_CRT_HOTPLUG_WARMUP_10MS | \
41 ADPA_CRT_HOTPLUG_SAMPLE_4S | \
42 ADPA_CRT_HOTPLUG_VOLTAGE_50 | \
43 ADPA_CRT_HOTPLUG_VOLREF_325MV | \
44 ADPA_CRT_HOTPLUG_ENABLE)
47 struct intel_encoder base;
48 bool force_hotplug_required;
52 static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
54 return container_of(intel_attached_encoder(connector),
55 struct intel_crt, base);
58 static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
60 return container_of(encoder, struct intel_crt, base);
63 static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
66 struct drm_device *dev = encoder->base.dev;
67 struct drm_i915_private *dev_priv = dev->dev_private;
68 struct intel_crt *crt = intel_encoder_to_crt(encoder);
71 tmp = I915_READ(crt->adpa_reg);
73 if (!(tmp & ADPA_DAC_ENABLE))
77 *pipe = PORT_TO_PIPE_CPT(tmp);
79 *pipe = PORT_TO_PIPE(tmp);
84 static void intel_disable_crt(struct intel_encoder *encoder)
86 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
87 struct intel_crt *crt = intel_encoder_to_crt(encoder);
90 temp = I915_READ(crt->adpa_reg);
91 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
92 temp &= ~ADPA_DAC_ENABLE;
93 I915_WRITE(crt->adpa_reg, temp);
96 static void intel_enable_crt(struct intel_encoder *encoder)
98 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
99 struct intel_crt *crt = intel_encoder_to_crt(encoder);
102 temp = I915_READ(crt->adpa_reg);
103 temp |= ADPA_DAC_ENABLE;
104 I915_WRITE(crt->adpa_reg, temp);
107 /* Note: The caller is required to filter out dpms modes not supported by the
109 static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode)
111 struct drm_device *dev = encoder->base.dev;
112 struct drm_i915_private *dev_priv = dev->dev_private;
113 struct intel_crt *crt = intel_encoder_to_crt(encoder);
116 temp = I915_READ(crt->adpa_reg);
117 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
118 temp &= ~ADPA_DAC_ENABLE;
121 case DRM_MODE_DPMS_ON:
122 temp |= ADPA_DAC_ENABLE;
124 case DRM_MODE_DPMS_STANDBY:
125 temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
127 case DRM_MODE_DPMS_SUSPEND:
128 temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
130 case DRM_MODE_DPMS_OFF:
131 temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
135 I915_WRITE(crt->adpa_reg, temp);
138 static void intel_crt_dpms(struct drm_connector *connector, int mode)
140 struct drm_device *dev = connector->dev;
141 struct intel_encoder *encoder = intel_attached_encoder(connector);
142 struct drm_crtc *crtc;
145 /* PCH platforms and VLV only support on/off. */
146 if (INTEL_INFO(dev)->gen < 5 && mode != DRM_MODE_DPMS_ON)
147 mode = DRM_MODE_DPMS_OFF;
149 if (mode == connector->dpms)
152 old_dpms = connector->dpms;
153 connector->dpms = mode;
155 /* Only need to change hw state when actually enabled */
156 crtc = encoder->base.crtc;
158 encoder->connectors_active = false;
162 /* We need the pipe to run for anything but OFF. */
163 if (mode == DRM_MODE_DPMS_OFF)
164 encoder->connectors_active = false;
166 encoder->connectors_active = true;
168 if (mode < old_dpms) {
169 /* From off to on, enable the pipe first. */
170 intel_crtc_update_dpms(crtc);
172 intel_crt_set_dpms(encoder, mode);
174 intel_crt_set_dpms(encoder, mode);
176 intel_crtc_update_dpms(crtc);
179 intel_modeset_check_state(connector->dev);
182 static int intel_crt_mode_valid(struct drm_connector *connector,
183 struct drm_display_mode *mode)
185 struct drm_device *dev = connector->dev;
188 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
189 return MODE_NO_DBLESCAN;
191 if (mode->clock < 25000)
192 return MODE_CLOCK_LOW;
198 if (mode->clock > max_clock)
199 return MODE_CLOCK_HIGH;
204 static bool intel_crt_mode_fixup(struct drm_encoder *encoder,
205 const struct drm_display_mode *mode,
206 struct drm_display_mode *adjusted_mode)
211 static void intel_crt_mode_set(struct drm_encoder *encoder,
212 struct drm_display_mode *mode,
213 struct drm_display_mode *adjusted_mode)
216 struct drm_device *dev = encoder->dev;
217 struct drm_crtc *crtc = encoder->crtc;
218 struct intel_crt *crt =
219 intel_encoder_to_crt(to_intel_encoder(encoder));
220 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
221 struct drm_i915_private *dev_priv = dev->dev_private;
224 adpa = ADPA_HOTPLUG_BITS;
225 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
226 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
227 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
228 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
230 /* For CPT allow 3 pipe config, for others just use A or B */
231 if (HAS_PCH_CPT(dev))
232 adpa |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
233 else if (intel_crtc->pipe == 0)
234 adpa |= ADPA_PIPE_A_SELECT;
236 adpa |= ADPA_PIPE_B_SELECT;
238 if (!HAS_PCH_SPLIT(dev))
239 I915_WRITE(BCLRPAT(intel_crtc->pipe), 0);
241 I915_WRITE(crt->adpa_reg, adpa);
244 static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
246 struct drm_device *dev = connector->dev;
247 struct intel_crt *crt = intel_attached_crt(connector);
248 struct drm_i915_private *dev_priv = dev->dev_private;
252 /* The first time through, trigger an explicit detection cycle */
253 if (crt->force_hotplug_required) {
254 bool turn_off_dac = HAS_PCH_SPLIT(dev);
257 crt->force_hotplug_required = 0;
259 save_adpa = adpa = I915_READ(PCH_ADPA);
260 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
262 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
264 adpa &= ~ADPA_DAC_ENABLE;
266 I915_WRITE(PCH_ADPA, adpa);
268 if (wait_for((I915_READ(PCH_ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
270 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
273 I915_WRITE(PCH_ADPA, save_adpa);
274 POSTING_READ(PCH_ADPA);
278 /* Check the status to see if both blue and green are on now */
279 adpa = I915_READ(PCH_ADPA);
280 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
284 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);
289 static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
291 struct drm_device *dev = connector->dev;
292 struct drm_i915_private *dev_priv = dev->dev_private;
297 save_adpa = adpa = I915_READ(ADPA);
298 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
300 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
302 I915_WRITE(ADPA, adpa);
304 if (wait_for((I915_READ(ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
306 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
307 I915_WRITE(ADPA, save_adpa);
310 /* Check the status to see if both blue and green are on now */
311 adpa = I915_READ(ADPA);
312 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
317 DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);
319 /* FIXME: debug force function and remove */
326 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
328 * Not for i915G/i915GM
330 * \return true if CRT is connected.
331 * \return false if CRT is disconnected.
333 static bool intel_crt_detect_hotplug(struct drm_connector *connector)
335 struct drm_device *dev = connector->dev;
336 struct drm_i915_private *dev_priv = dev->dev_private;
337 u32 hotplug_en, orig, stat;
341 if (HAS_PCH_SPLIT(dev))
342 return intel_ironlake_crt_detect_hotplug(connector);
344 if (IS_VALLEYVIEW(dev))
345 return valleyview_crt_detect_hotplug(connector);
348 * On 4 series desktop, CRT detect sequence need to be done twice
349 * to get a reliable result.
352 if (IS_G4X(dev) && !IS_GM45(dev))
356 hotplug_en = orig = I915_READ(PORT_HOTPLUG_EN);
357 hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
359 for (i = 0; i < tries ; i++) {
360 /* turn on the FORCE_DETECT */
361 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
362 /* wait for FORCE_DETECT to go off */
363 if (wait_for((I915_READ(PORT_HOTPLUG_EN) &
364 CRT_HOTPLUG_FORCE_DETECT) == 0,
366 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
369 stat = I915_READ(PORT_HOTPLUG_STAT);
370 if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
373 /* clear the interrupt we just generated, if any */
374 I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
376 /* and put the bits back */
377 I915_WRITE(PORT_HOTPLUG_EN, orig);
382 static struct edid *intel_crt_get_edid(struct drm_connector *connector,
383 struct i2c_adapter *i2c)
387 edid = drm_get_edid(connector, i2c);
389 if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
390 DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
391 intel_gmbus_force_bit(i2c, true);
392 edid = drm_get_edid(connector, i2c);
393 intel_gmbus_force_bit(i2c, false);
399 /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
400 static int intel_crt_ddc_get_modes(struct drm_connector *connector,
401 struct i2c_adapter *adapter)
405 edid = intel_crt_get_edid(connector, adapter);
409 return intel_connector_update_modes(connector, edid);
412 static bool intel_crt_detect_ddc(struct drm_connector *connector)
414 struct intel_crt *crt = intel_attached_crt(connector);
415 struct drm_i915_private *dev_priv = crt->base.base.dev->dev_private;
417 struct i2c_adapter *i2c;
419 BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
421 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->crt_ddc_pin);
422 edid = intel_crt_get_edid(connector, i2c);
425 bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
428 * This may be a DVI-I connector with a shared DDC
429 * link between analog and digital outputs, so we
430 * have to check the EDID input spec of the attached device.
433 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
437 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
439 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
447 static enum drm_connector_status
448 intel_crt_load_detect(struct intel_crt *crt)
450 struct drm_device *dev = crt->base.base.dev;
451 struct drm_i915_private *dev_priv = dev->dev_private;
452 uint32_t pipe = to_intel_crtc(crt->base.base.crtc)->pipe;
453 uint32_t save_bclrpat;
454 uint32_t save_vtotal;
455 uint32_t vtotal, vactive;
457 uint32_t vblank, vblank_start, vblank_end;
459 uint32_t bclrpat_reg;
463 uint32_t pipeconf_reg;
464 uint32_t pipe_dsl_reg;
466 enum drm_connector_status status;
468 DRM_DEBUG_KMS("starting load-detect on CRT\n");
470 bclrpat_reg = BCLRPAT(pipe);
471 vtotal_reg = VTOTAL(pipe);
472 vblank_reg = VBLANK(pipe);
473 vsync_reg = VSYNC(pipe);
474 pipeconf_reg = PIPECONF(pipe);
475 pipe_dsl_reg = PIPEDSL(pipe);
477 save_bclrpat = I915_READ(bclrpat_reg);
478 save_vtotal = I915_READ(vtotal_reg);
479 vblank = I915_READ(vblank_reg);
481 vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
482 vactive = (save_vtotal & 0x7ff) + 1;
484 vblank_start = (vblank & 0xfff) + 1;
485 vblank_end = ((vblank >> 16) & 0xfff) + 1;
487 /* Set the border color to purple. */
488 I915_WRITE(bclrpat_reg, 0x500050);
491 uint32_t pipeconf = I915_READ(pipeconf_reg);
492 I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
493 POSTING_READ(pipeconf_reg);
494 /* Wait for next Vblank to substitue
495 * border color for Color info */
496 intel_wait_for_vblank(dev, pipe);
497 st00 = I915_READ8(VGA_MSR_WRITE);
498 status = ((st00 & (1 << 4)) != 0) ?
499 connector_status_connected :
500 connector_status_disconnected;
502 I915_WRITE(pipeconf_reg, pipeconf);
504 bool restore_vblank = false;
508 * If there isn't any border, add some.
509 * Yes, this will flicker
511 if (vblank_start <= vactive && vblank_end >= vtotal) {
512 uint32_t vsync = I915_READ(vsync_reg);
513 uint32_t vsync_start = (vsync & 0xffff) + 1;
515 vblank_start = vsync_start;
516 I915_WRITE(vblank_reg,
518 ((vblank_end - 1) << 16));
519 restore_vblank = true;
521 /* sample in the vertical border, selecting the larger one */
522 if (vblank_start - vactive >= vtotal - vblank_end)
523 vsample = (vblank_start + vactive) >> 1;
525 vsample = (vtotal + vblank_end) >> 1;
528 * Wait for the border to be displayed
530 while (I915_READ(pipe_dsl_reg) >= vactive)
532 while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
535 * Watch ST00 for an entire scanline
541 /* Read the ST00 VGA status register */
542 st00 = I915_READ8(VGA_MSR_WRITE);
545 } while ((I915_READ(pipe_dsl_reg) == dsl));
547 /* restore vblank if necessary */
549 I915_WRITE(vblank_reg, vblank);
551 * If more than 3/4 of the scanline detected a monitor,
552 * then it is assumed to be present. This works even on i830,
553 * where there isn't any way to force the border color across
556 status = detect * 4 > count * 3 ?
557 connector_status_connected :
558 connector_status_disconnected;
561 /* Restore previous settings */
562 I915_WRITE(bclrpat_reg, save_bclrpat);
567 static enum drm_connector_status
568 intel_crt_detect(struct drm_connector *connector, bool force)
570 struct drm_device *dev = connector->dev;
571 struct intel_crt *crt = intel_attached_crt(connector);
572 enum drm_connector_status status;
573 struct intel_load_detect_pipe tmp;
575 if (I915_HAS_HOTPLUG(dev)) {
576 /* We can not rely on the HPD pin always being correctly wired
577 * up, for example many KVM do not pass it through, and so
578 * only trust an assertion that the monitor is connected.
580 if (intel_crt_detect_hotplug(connector)) {
581 DRM_DEBUG_KMS("CRT detected via hotplug\n");
582 return connector_status_connected;
584 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
587 if (intel_crt_detect_ddc(connector))
588 return connector_status_connected;
590 /* Load detection is broken on HPD capable machines. Whoever wants a
591 * broken monitor (without edid) to work behind a broken kvm (that fails
592 * to have the right resistors for HP detection) needs to fix this up.
593 * For now just bail out. */
594 if (I915_HAS_HOTPLUG(dev))
595 return connector_status_disconnected;
598 return connector->status;
600 /* for pre-945g platforms use load detect */
601 if (intel_get_load_detect_pipe(connector, NULL, &tmp)) {
602 if (intel_crt_detect_ddc(connector))
603 status = connector_status_connected;
605 status = intel_crt_load_detect(crt);
606 intel_release_load_detect_pipe(connector, &tmp);
608 status = connector_status_unknown;
613 static void intel_crt_destroy(struct drm_connector *connector)
615 drm_sysfs_connector_remove(connector);
616 drm_connector_cleanup(connector);
620 static int intel_crt_get_modes(struct drm_connector *connector)
622 struct drm_device *dev = connector->dev;
623 struct drm_i915_private *dev_priv = dev->dev_private;
625 struct i2c_adapter *i2c;
627 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->crt_ddc_pin);
628 ret = intel_crt_ddc_get_modes(connector, i2c);
629 if (ret || !IS_G4X(dev))
632 /* Try to probe digital port for output in DVI-I -> VGA mode. */
633 i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPB);
634 return intel_crt_ddc_get_modes(connector, i2c);
637 static int intel_crt_set_property(struct drm_connector *connector,
638 struct drm_property *property,
644 static void intel_crt_reset(struct drm_connector *connector)
646 struct drm_device *dev = connector->dev;
647 struct intel_crt *crt = intel_attached_crt(connector);
649 if (HAS_PCH_SPLIT(dev))
650 crt->force_hotplug_required = 1;
654 * Routines for controlling stuff on the analog port
657 static const struct drm_encoder_helper_funcs crt_encoder_funcs = {
658 .mode_fixup = intel_crt_mode_fixup,
659 .mode_set = intel_crt_mode_set,
660 .disable = intel_encoder_noop,
663 static const struct drm_connector_funcs intel_crt_connector_funcs = {
664 .reset = intel_crt_reset,
665 .dpms = intel_crt_dpms,
666 .detect = intel_crt_detect,
667 .fill_modes = drm_helper_probe_single_connector_modes,
668 .destroy = intel_crt_destroy,
669 .set_property = intel_crt_set_property,
672 static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
673 .mode_valid = intel_crt_mode_valid,
674 .get_modes = intel_crt_get_modes,
675 .best_encoder = intel_best_encoder,
678 static const struct drm_encoder_funcs intel_crt_enc_funcs = {
679 .destroy = intel_encoder_destroy,
682 static int __init intel_no_crt_dmi_callback(const struct dmi_system_id *id)
684 DRM_INFO("Skipping CRT initialization for %s\n", id->ident);
688 static const struct dmi_system_id intel_no_crt[] = {
690 .callback = intel_no_crt_dmi_callback,
693 DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
694 DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
700 void intel_crt_init(struct drm_device *dev)
702 struct drm_connector *connector;
703 struct intel_crt *crt;
704 struct intel_connector *intel_connector;
705 struct drm_i915_private *dev_priv = dev->dev_private;
707 /* Skip machines without VGA that falsely report hotplug events */
708 if (dmi_check_system(intel_no_crt))
711 crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
715 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
716 if (!intel_connector) {
721 connector = &intel_connector->base;
722 drm_connector_init(dev, &intel_connector->base,
723 &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
725 drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs,
726 DRM_MODE_ENCODER_DAC);
728 intel_connector_attach_encoder(intel_connector, &crt->base);
730 crt->base.type = INTEL_OUTPUT_ANALOG;
731 crt->base.cloneable = true;
733 crt->base.crtc_mask = (1 << 0);
735 crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
738 connector->interlace_allowed = 0;
740 connector->interlace_allowed = 1;
741 connector->doublescan_allowed = 0;
743 if (HAS_PCH_SPLIT(dev))
744 crt->adpa_reg = PCH_ADPA;
745 else if (IS_VALLEYVIEW(dev))
746 crt->adpa_reg = VLV_ADPA;
748 crt->adpa_reg = ADPA;
750 crt->base.disable = intel_disable_crt;
751 crt->base.enable = intel_enable_crt;
752 crt->base.get_hw_state = intel_crt_get_hw_state;
753 intel_connector->get_hw_state = intel_connector_get_hw_state;
755 drm_encoder_helper_add(&crt->base.base, &crt_encoder_funcs);
756 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
758 drm_sysfs_connector_add(connector);
760 if (I915_HAS_HOTPLUG(dev))
761 connector->polled = DRM_CONNECTOR_POLL_HPD;
763 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
766 * Configure the automatic hotplug detection stuff
768 crt->force_hotplug_required = 0;
769 if (HAS_PCH_SPLIT(dev)) {
772 adpa = I915_READ(PCH_ADPA);
773 adpa &= ~ADPA_CRT_HOTPLUG_MASK;
774 adpa |= ADPA_HOTPLUG_BITS;
775 I915_WRITE(PCH_ADPA, adpa);
776 POSTING_READ(PCH_ADPA);
778 DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa);
779 crt->force_hotplug_required = 1;
782 dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS;