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
;
201 /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
202 if (HAS_PCH_LPT(dev
) &&
203 (ironlake_get_lanes_required(mode
->clock
, 270000, 24) > 2))
204 return MODE_CLOCK_HIGH
;
209 static bool intel_crt_compute_config(struct intel_encoder
*encoder
,
210 struct intel_crtc_config
*pipe_config
)
212 struct drm_device
*dev
= encoder
->base
.dev
;
214 if (HAS_PCH_SPLIT(dev
))
215 pipe_config
->has_pch_encoder
= true;
220 static void intel_crt_mode_set(struct drm_encoder
*encoder
,
221 struct drm_display_mode
*mode
,
222 struct drm_display_mode
*adjusted_mode
)
225 struct drm_device
*dev
= encoder
->dev
;
226 struct drm_crtc
*crtc
= encoder
->crtc
;
227 struct intel_crt
*crt
=
228 intel_encoder_to_crt(to_intel_encoder(encoder
));
229 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
230 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
233 if (HAS_PCH_SPLIT(dev
))
234 adpa
= ADPA_HOTPLUG_BITS
;
238 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
239 adpa
|= ADPA_HSYNC_ACTIVE_HIGH
;
240 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
241 adpa
|= ADPA_VSYNC_ACTIVE_HIGH
;
243 /* For CPT allow 3 pipe config, for others just use A or B */
244 if (HAS_PCH_LPT(dev
))
245 ; /* Those bits don't exist here */
246 else if (HAS_PCH_CPT(dev
))
247 adpa
|= PORT_TRANS_SEL_CPT(intel_crtc
->pipe
);
248 else if (intel_crtc
->pipe
== 0)
249 adpa
|= ADPA_PIPE_A_SELECT
;
251 adpa
|= ADPA_PIPE_B_SELECT
;
253 if (!HAS_PCH_SPLIT(dev
))
254 I915_WRITE(BCLRPAT(intel_crtc
->pipe
), 0);
256 I915_WRITE(crt
->adpa_reg
, adpa
);
259 static bool intel_ironlake_crt_detect_hotplug(struct drm_connector
*connector
)
261 struct drm_device
*dev
= connector
->dev
;
262 struct intel_crt
*crt
= intel_attached_crt(connector
);
263 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
267 /* The first time through, trigger an explicit detection cycle */
268 if (crt
->force_hotplug_required
) {
269 bool turn_off_dac
= HAS_PCH_SPLIT(dev
);
272 crt
->force_hotplug_required
= 0;
274 save_adpa
= adpa
= I915_READ(crt
->adpa_reg
);
275 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa
);
277 adpa
|= ADPA_CRT_HOTPLUG_FORCE_TRIGGER
;
279 adpa
&= ~ADPA_DAC_ENABLE
;
281 I915_WRITE(crt
->adpa_reg
, adpa
);
283 if (wait_for((I915_READ(crt
->adpa_reg
) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER
) == 0,
285 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
288 I915_WRITE(crt
->adpa_reg
, save_adpa
);
289 POSTING_READ(crt
->adpa_reg
);
293 /* Check the status to see if both blue and green are on now */
294 adpa
= I915_READ(crt
->adpa_reg
);
295 if ((adpa
& ADPA_CRT_HOTPLUG_MONITOR_MASK
) != 0)
299 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa
, ret
);
304 static bool valleyview_crt_detect_hotplug(struct drm_connector
*connector
)
306 struct drm_device
*dev
= connector
->dev
;
307 struct intel_crt
*crt
= intel_attached_crt(connector
);
308 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
313 save_adpa
= adpa
= I915_READ(crt
->adpa_reg
);
314 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa
);
316 adpa
|= ADPA_CRT_HOTPLUG_FORCE_TRIGGER
;
318 I915_WRITE(crt
->adpa_reg
, adpa
);
320 if (wait_for((I915_READ(crt
->adpa_reg
) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER
) == 0,
322 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
323 I915_WRITE(crt
->adpa_reg
, save_adpa
);
326 /* Check the status to see if both blue and green are on now */
327 adpa
= I915_READ(crt
->adpa_reg
);
328 if ((adpa
& ADPA_CRT_HOTPLUG_MONITOR_MASK
) != 0)
333 DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa
, ret
);
335 /* FIXME: debug force function and remove */
342 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
344 * Not for i915G/i915GM
346 * \return true if CRT is connected.
347 * \return false if CRT is disconnected.
349 static bool intel_crt_detect_hotplug(struct drm_connector
*connector
)
351 struct drm_device
*dev
= connector
->dev
;
352 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
353 u32 hotplug_en
, orig
, stat
;
357 if (HAS_PCH_SPLIT(dev
))
358 return intel_ironlake_crt_detect_hotplug(connector
);
360 if (IS_VALLEYVIEW(dev
))
361 return valleyview_crt_detect_hotplug(connector
);
364 * On 4 series desktop, CRT detect sequence need to be done twice
365 * to get a reliable result.
368 if (IS_G4X(dev
) && !IS_GM45(dev
))
372 hotplug_en
= orig
= I915_READ(PORT_HOTPLUG_EN
);
373 hotplug_en
|= CRT_HOTPLUG_FORCE_DETECT
;
375 for (i
= 0; i
< tries
; i
++) {
376 /* turn on the FORCE_DETECT */
377 I915_WRITE(PORT_HOTPLUG_EN
, hotplug_en
);
378 /* wait for FORCE_DETECT to go off */
379 if (wait_for((I915_READ(PORT_HOTPLUG_EN
) &
380 CRT_HOTPLUG_FORCE_DETECT
) == 0,
382 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
385 stat
= I915_READ(PORT_HOTPLUG_STAT
);
386 if ((stat
& CRT_HOTPLUG_MONITOR_MASK
) != CRT_HOTPLUG_MONITOR_NONE
)
389 /* clear the interrupt we just generated, if any */
390 I915_WRITE(PORT_HOTPLUG_STAT
, CRT_HOTPLUG_INT_STATUS
);
392 /* and put the bits back */
393 I915_WRITE(PORT_HOTPLUG_EN
, orig
);
398 static struct edid
*intel_crt_get_edid(struct drm_connector
*connector
,
399 struct i2c_adapter
*i2c
)
403 edid
= drm_get_edid(connector
, i2c
);
405 if (!edid
&& !intel_gmbus_is_forced_bit(i2c
)) {
406 DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
407 intel_gmbus_force_bit(i2c
, true);
408 edid
= drm_get_edid(connector
, i2c
);
409 intel_gmbus_force_bit(i2c
, false);
415 /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
416 static int intel_crt_ddc_get_modes(struct drm_connector
*connector
,
417 struct i2c_adapter
*adapter
)
422 edid
= intel_crt_get_edid(connector
, adapter
);
426 ret
= intel_connector_update_modes(connector
, edid
);
432 static bool intel_crt_detect_ddc(struct drm_connector
*connector
)
434 struct intel_crt
*crt
= intel_attached_crt(connector
);
435 struct drm_i915_private
*dev_priv
= crt
->base
.base
.dev
->dev_private
;
437 struct i2c_adapter
*i2c
;
439 BUG_ON(crt
->base
.type
!= INTEL_OUTPUT_ANALOG
);
441 i2c
= intel_gmbus_get_adapter(dev_priv
, dev_priv
->crt_ddc_pin
);
442 edid
= intel_crt_get_edid(connector
, i2c
);
445 bool is_digital
= edid
->input
& DRM_EDID_INPUT_DIGITAL
;
448 * This may be a DVI-I connector with a shared DDC
449 * link between analog and digital outputs, so we
450 * have to check the EDID input spec of the attached device.
453 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
457 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
459 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
467 static enum drm_connector_status
468 intel_crt_load_detect(struct intel_crt
*crt
)
470 struct drm_device
*dev
= crt
->base
.base
.dev
;
471 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
472 uint32_t pipe
= to_intel_crtc(crt
->base
.base
.crtc
)->pipe
;
473 uint32_t save_bclrpat
;
474 uint32_t save_vtotal
;
475 uint32_t vtotal
, vactive
;
477 uint32_t vblank
, vblank_start
, vblank_end
;
479 uint32_t bclrpat_reg
;
483 uint32_t pipeconf_reg
;
484 uint32_t pipe_dsl_reg
;
486 enum drm_connector_status status
;
488 DRM_DEBUG_KMS("starting load-detect on CRT\n");
490 bclrpat_reg
= BCLRPAT(pipe
);
491 vtotal_reg
= VTOTAL(pipe
);
492 vblank_reg
= VBLANK(pipe
);
493 vsync_reg
= VSYNC(pipe
);
494 pipeconf_reg
= PIPECONF(pipe
);
495 pipe_dsl_reg
= PIPEDSL(pipe
);
497 save_bclrpat
= I915_READ(bclrpat_reg
);
498 save_vtotal
= I915_READ(vtotal_reg
);
499 vblank
= I915_READ(vblank_reg
);
501 vtotal
= ((save_vtotal
>> 16) & 0xfff) + 1;
502 vactive
= (save_vtotal
& 0x7ff) + 1;
504 vblank_start
= (vblank
& 0xfff) + 1;
505 vblank_end
= ((vblank
>> 16) & 0xfff) + 1;
507 /* Set the border color to purple. */
508 I915_WRITE(bclrpat_reg
, 0x500050);
511 uint32_t pipeconf
= I915_READ(pipeconf_reg
);
512 I915_WRITE(pipeconf_reg
, pipeconf
| PIPECONF_FORCE_BORDER
);
513 POSTING_READ(pipeconf_reg
);
514 /* Wait for next Vblank to substitue
515 * border color for Color info */
516 intel_wait_for_vblank(dev
, pipe
);
517 st00
= I915_READ8(VGA_MSR_WRITE
);
518 status
= ((st00
& (1 << 4)) != 0) ?
519 connector_status_connected
:
520 connector_status_disconnected
;
522 I915_WRITE(pipeconf_reg
, pipeconf
);
524 bool restore_vblank
= false;
528 * If there isn't any border, add some.
529 * Yes, this will flicker
531 if (vblank_start
<= vactive
&& vblank_end
>= vtotal
) {
532 uint32_t vsync
= I915_READ(vsync_reg
);
533 uint32_t vsync_start
= (vsync
& 0xffff) + 1;
535 vblank_start
= vsync_start
;
536 I915_WRITE(vblank_reg
,
538 ((vblank_end
- 1) << 16));
539 restore_vblank
= true;
541 /* sample in the vertical border, selecting the larger one */
542 if (vblank_start
- vactive
>= vtotal
- vblank_end
)
543 vsample
= (vblank_start
+ vactive
) >> 1;
545 vsample
= (vtotal
+ vblank_end
) >> 1;
548 * Wait for the border to be displayed
550 while (I915_READ(pipe_dsl_reg
) >= vactive
)
552 while ((dsl
= I915_READ(pipe_dsl_reg
)) <= vsample
)
555 * Watch ST00 for an entire scanline
561 /* Read the ST00 VGA status register */
562 st00
= I915_READ8(VGA_MSR_WRITE
);
565 } while ((I915_READ(pipe_dsl_reg
) == dsl
));
567 /* restore vblank if necessary */
569 I915_WRITE(vblank_reg
, vblank
);
571 * If more than 3/4 of the scanline detected a monitor,
572 * then it is assumed to be present. This works even on i830,
573 * where there isn't any way to force the border color across
576 status
= detect
* 4 > count
* 3 ?
577 connector_status_connected
:
578 connector_status_disconnected
;
581 /* Restore previous settings */
582 I915_WRITE(bclrpat_reg
, save_bclrpat
);
587 static enum drm_connector_status
588 intel_crt_detect(struct drm_connector
*connector
, bool force
)
590 struct drm_device
*dev
= connector
->dev
;
591 struct intel_crt
*crt
= intel_attached_crt(connector
);
592 enum drm_connector_status status
;
593 struct intel_load_detect_pipe tmp
;
595 if (I915_HAS_HOTPLUG(dev
)) {
596 /* We can not rely on the HPD pin always being correctly wired
597 * up, for example many KVM do not pass it through, and so
598 * only trust an assertion that the monitor is connected.
600 if (intel_crt_detect_hotplug(connector
)) {
601 DRM_DEBUG_KMS("CRT detected via hotplug\n");
602 return connector_status_connected
;
604 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
607 if (intel_crt_detect_ddc(connector
))
608 return connector_status_connected
;
610 /* Load detection is broken on HPD capable machines. Whoever wants a
611 * broken monitor (without edid) to work behind a broken kvm (that fails
612 * to have the right resistors for HP detection) needs to fix this up.
613 * For now just bail out. */
614 if (I915_HAS_HOTPLUG(dev
))
615 return connector_status_disconnected
;
618 return connector
->status
;
620 /* for pre-945g platforms use load detect */
621 if (intel_get_load_detect_pipe(connector
, NULL
, &tmp
)) {
622 if (intel_crt_detect_ddc(connector
))
623 status
= connector_status_connected
;
625 status
= intel_crt_load_detect(crt
);
626 intel_release_load_detect_pipe(connector
, &tmp
);
628 status
= connector_status_unknown
;
633 static void intel_crt_destroy(struct drm_connector
*connector
)
635 drm_sysfs_connector_remove(connector
);
636 drm_connector_cleanup(connector
);
640 static int intel_crt_get_modes(struct drm_connector
*connector
)
642 struct drm_device
*dev
= connector
->dev
;
643 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
645 struct i2c_adapter
*i2c
;
647 i2c
= intel_gmbus_get_adapter(dev_priv
, dev_priv
->crt_ddc_pin
);
648 ret
= intel_crt_ddc_get_modes(connector
, i2c
);
649 if (ret
|| !IS_G4X(dev
))
652 /* Try to probe digital port for output in DVI-I -> VGA mode. */
653 i2c
= intel_gmbus_get_adapter(dev_priv
, GMBUS_PORT_DPB
);
654 return intel_crt_ddc_get_modes(connector
, i2c
);
657 static int intel_crt_set_property(struct drm_connector
*connector
,
658 struct drm_property
*property
,
664 static void intel_crt_reset(struct drm_connector
*connector
)
666 struct drm_device
*dev
= connector
->dev
;
667 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
668 struct intel_crt
*crt
= intel_attached_crt(connector
);
670 if (HAS_PCH_SPLIT(dev
)) {
673 adpa
= I915_READ(crt
->adpa_reg
);
674 adpa
&= ~ADPA_CRT_HOTPLUG_MASK
;
675 adpa
|= ADPA_HOTPLUG_BITS
;
676 I915_WRITE(crt
->adpa_reg
, adpa
);
677 POSTING_READ(crt
->adpa_reg
);
679 DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa
);
680 crt
->force_hotplug_required
= 1;
686 * Routines for controlling stuff on the analog port
689 static const struct drm_encoder_helper_funcs crt_encoder_funcs
= {
690 .mode_set
= intel_crt_mode_set
,
693 static const struct drm_connector_funcs intel_crt_connector_funcs
= {
694 .reset
= intel_crt_reset
,
695 .dpms
= intel_crt_dpms
,
696 .detect
= intel_crt_detect
,
697 .fill_modes
= drm_helper_probe_single_connector_modes
,
698 .destroy
= intel_crt_destroy
,
699 .set_property
= intel_crt_set_property
,
702 static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs
= {
703 .mode_valid
= intel_crt_mode_valid
,
704 .get_modes
= intel_crt_get_modes
,
705 .best_encoder
= intel_best_encoder
,
708 static const struct drm_encoder_funcs intel_crt_enc_funcs
= {
709 .destroy
= intel_encoder_destroy
,
712 static int __init
intel_no_crt_dmi_callback(const struct dmi_system_id
*id
)
714 DRM_INFO("Skipping CRT initialization for %s\n", id
->ident
);
718 static const struct dmi_system_id intel_no_crt
[] = {
720 .callback
= intel_no_crt_dmi_callback
,
723 DMI_MATCH(DMI_SYS_VENDOR
, "ACER"),
724 DMI_MATCH(DMI_PRODUCT_NAME
, "ZGB"),
730 void intel_crt_init(struct drm_device
*dev
)
732 struct drm_connector
*connector
;
733 struct intel_crt
*crt
;
734 struct intel_connector
*intel_connector
;
735 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
737 /* Skip machines without VGA that falsely report hotplug events */
738 if (dmi_check_system(intel_no_crt
))
741 crt
= kzalloc(sizeof(struct intel_crt
), GFP_KERNEL
);
745 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
746 if (!intel_connector
) {
751 connector
= &intel_connector
->base
;
752 drm_connector_init(dev
, &intel_connector
->base
,
753 &intel_crt_connector_funcs
, DRM_MODE_CONNECTOR_VGA
);
755 drm_encoder_init(dev
, &crt
->base
.base
, &intel_crt_enc_funcs
,
756 DRM_MODE_ENCODER_DAC
);
758 intel_connector_attach_encoder(intel_connector
, &crt
->base
);
760 crt
->base
.type
= INTEL_OUTPUT_ANALOG
;
761 crt
->base
.cloneable
= true;
763 crt
->base
.crtc_mask
= (1 << 0);
765 crt
->base
.crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
768 connector
->interlace_allowed
= 0;
770 connector
->interlace_allowed
= 1;
771 connector
->doublescan_allowed
= 0;
773 if (HAS_PCH_SPLIT(dev
))
774 crt
->adpa_reg
= PCH_ADPA
;
775 else if (IS_VALLEYVIEW(dev
))
776 crt
->adpa_reg
= VLV_ADPA
;
778 crt
->adpa_reg
= ADPA
;
780 crt
->base
.compute_config
= intel_crt_compute_config
;
781 crt
->base
.disable
= intel_disable_crt
;
782 crt
->base
.enable
= intel_enable_crt
;
783 if (I915_HAS_HOTPLUG(dev
))
784 crt
->base
.hpd_pin
= HPD_CRT
;
786 crt
->base
.get_hw_state
= intel_ddi_get_hw_state
;
788 crt
->base
.get_hw_state
= intel_crt_get_hw_state
;
789 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
791 drm_encoder_helper_add(&crt
->base
.base
, &crt_encoder_funcs
);
792 drm_connector_helper_add(connector
, &intel_crt_connector_helper_funcs
);
794 drm_sysfs_connector_add(connector
);
796 if (!I915_HAS_HOTPLUG(dev
))
797 intel_connector
->polled
= DRM_CONNECTOR_POLL_CONNECT
;
800 * Configure the automatic hotplug detection stuff
802 crt
->force_hotplug_required
= 0;
805 * TODO: find a proper way to discover whether we need to set the the
806 * polarity and link reversal bits or not, instead of relying on the
809 if (HAS_PCH_LPT(dev
)) {
810 u32 fdi_config
= FDI_RX_POLARITY_REVERSED_LPT
|
811 FDI_RX_LINK_REVERSAL_OVERRIDE
;
813 dev_priv
->fdi_rx_config
= I915_READ(_FDI_RXA_CTL
) & fdi_config
;