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 /* DPMS state is stored in the connector, which we need in the
49 * encoder's enable/disable callbacks */
50 struct intel_connector
*connector
;
51 bool force_hotplug_required
;
55 static struct intel_crt
*intel_encoder_to_crt(struct intel_encoder
*encoder
)
57 return container_of(encoder
, struct intel_crt
, base
);
60 static struct intel_crt
*intel_attached_crt(struct drm_connector
*connector
)
62 return intel_encoder_to_crt(intel_attached_encoder(connector
));
65 static bool intel_crt_get_hw_state(struct intel_encoder
*encoder
,
68 struct drm_device
*dev
= encoder
->base
.dev
;
69 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
70 struct intel_crt
*crt
= intel_encoder_to_crt(encoder
);
73 tmp
= I915_READ(crt
->adpa_reg
);
75 if (!(tmp
& ADPA_DAC_ENABLE
))
79 *pipe
= PORT_TO_PIPE_CPT(tmp
);
81 *pipe
= PORT_TO_PIPE(tmp
);
86 static void intel_crt_get_config(struct intel_encoder
*encoder
,
87 struct intel_crtc_config
*pipe_config
)
89 struct drm_i915_private
*dev_priv
= encoder
->base
.dev
->dev_private
;
90 struct intel_crt
*crt
= intel_encoder_to_crt(encoder
);
94 tmp
= I915_READ(crt
->adpa_reg
);
96 if (tmp
& ADPA_HSYNC_ACTIVE_HIGH
)
97 flags
|= DRM_MODE_FLAG_PHSYNC
;
99 flags
|= DRM_MODE_FLAG_NHSYNC
;
101 if (tmp
& ADPA_VSYNC_ACTIVE_HIGH
)
102 flags
|= DRM_MODE_FLAG_PVSYNC
;
104 flags
|= DRM_MODE_FLAG_NVSYNC
;
106 pipe_config
->adjusted_mode
.flags
|= flags
;
108 dotclock
= pipe_config
->port_clock
;
110 if (HAS_PCH_SPLIT(dev_priv
->dev
))
111 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
113 pipe_config
->adjusted_mode
.clock
= dotclock
;
116 /* Note: The caller is required to filter out dpms modes not supported by the
118 static void intel_crt_set_dpms(struct intel_encoder
*encoder
, int mode
)
120 struct drm_device
*dev
= encoder
->base
.dev
;
121 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
122 struct intel_crt
*crt
= intel_encoder_to_crt(encoder
);
125 temp
= I915_READ(crt
->adpa_reg
);
126 temp
&= ~(ADPA_HSYNC_CNTL_DISABLE
| ADPA_VSYNC_CNTL_DISABLE
);
127 temp
&= ~ADPA_DAC_ENABLE
;
130 case DRM_MODE_DPMS_ON
:
131 temp
|= ADPA_DAC_ENABLE
;
133 case DRM_MODE_DPMS_STANDBY
:
134 temp
|= ADPA_DAC_ENABLE
| ADPA_HSYNC_CNTL_DISABLE
;
136 case DRM_MODE_DPMS_SUSPEND
:
137 temp
|= ADPA_DAC_ENABLE
| ADPA_VSYNC_CNTL_DISABLE
;
139 case DRM_MODE_DPMS_OFF
:
140 temp
|= ADPA_HSYNC_CNTL_DISABLE
| ADPA_VSYNC_CNTL_DISABLE
;
144 I915_WRITE(crt
->adpa_reg
, temp
);
147 static void intel_disable_crt(struct intel_encoder
*encoder
)
149 intel_crt_set_dpms(encoder
, DRM_MODE_DPMS_OFF
);
152 static void intel_enable_crt(struct intel_encoder
*encoder
)
154 struct intel_crt
*crt
= intel_encoder_to_crt(encoder
);
156 intel_crt_set_dpms(encoder
, crt
->connector
->base
.dpms
);
159 /* Special dpms function to support cloning between dvo/sdvo/crt. */
160 static void intel_crt_dpms(struct drm_connector
*connector
, int mode
)
162 struct drm_device
*dev
= connector
->dev
;
163 struct intel_encoder
*encoder
= intel_attached_encoder(connector
);
164 struct drm_crtc
*crtc
;
167 /* PCH platforms and VLV only support on/off. */
168 if (INTEL_INFO(dev
)->gen
>= 5 && mode
!= DRM_MODE_DPMS_ON
)
169 mode
= DRM_MODE_DPMS_OFF
;
171 if (mode
== connector
->dpms
)
174 old_dpms
= connector
->dpms
;
175 connector
->dpms
= mode
;
177 /* Only need to change hw state when actually enabled */
178 crtc
= encoder
->base
.crtc
;
180 encoder
->connectors_active
= false;
184 /* We need the pipe to run for anything but OFF. */
185 if (mode
== DRM_MODE_DPMS_OFF
)
186 encoder
->connectors_active
= false;
188 encoder
->connectors_active
= true;
190 /* We call connector dpms manually below in case pipe dpms doesn't
191 * change due to cloning. */
192 if (mode
< old_dpms
) {
193 /* From off to on, enable the pipe first. */
194 intel_crtc_update_dpms(crtc
);
196 intel_crt_set_dpms(encoder
, mode
);
198 intel_crt_set_dpms(encoder
, mode
);
200 intel_crtc_update_dpms(crtc
);
203 intel_modeset_check_state(connector
->dev
);
206 static int intel_crt_mode_valid(struct drm_connector
*connector
,
207 struct drm_display_mode
*mode
)
209 struct drm_device
*dev
= connector
->dev
;
212 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
213 return MODE_NO_DBLESCAN
;
215 if (mode
->clock
< 25000)
216 return MODE_CLOCK_LOW
;
222 if (mode
->clock
> max_clock
)
223 return MODE_CLOCK_HIGH
;
225 /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
226 if (HAS_PCH_LPT(dev
) &&
227 (ironlake_get_lanes_required(mode
->clock
, 270000, 24) > 2))
228 return MODE_CLOCK_HIGH
;
233 static bool intel_crt_compute_config(struct intel_encoder
*encoder
,
234 struct intel_crtc_config
*pipe_config
)
236 struct drm_device
*dev
= encoder
->base
.dev
;
238 if (HAS_PCH_SPLIT(dev
))
239 pipe_config
->has_pch_encoder
= true;
241 /* LPT FDI RX only supports 8bpc. */
242 if (HAS_PCH_LPT(dev
))
243 pipe_config
->pipe_bpp
= 24;
248 static void intel_crt_mode_set(struct intel_encoder
*encoder
)
251 struct drm_device
*dev
= encoder
->base
.dev
;
252 struct intel_crt
*crt
= intel_encoder_to_crt(encoder
);
253 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
254 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
255 struct drm_display_mode
*adjusted_mode
= &crtc
->config
.adjusted_mode
;
258 if (HAS_PCH_SPLIT(dev
))
259 adpa
= ADPA_HOTPLUG_BITS
;
263 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
264 adpa
|= ADPA_HSYNC_ACTIVE_HIGH
;
265 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
266 adpa
|= ADPA_VSYNC_ACTIVE_HIGH
;
268 /* For CPT allow 3 pipe config, for others just use A or B */
269 if (HAS_PCH_LPT(dev
))
270 ; /* Those bits don't exist here */
271 else if (HAS_PCH_CPT(dev
))
272 adpa
|= PORT_TRANS_SEL_CPT(crtc
->pipe
);
273 else if (crtc
->pipe
== 0)
274 adpa
|= ADPA_PIPE_A_SELECT
;
276 adpa
|= ADPA_PIPE_B_SELECT
;
278 if (!HAS_PCH_SPLIT(dev
))
279 I915_WRITE(BCLRPAT(crtc
->pipe
), 0);
281 I915_WRITE(crt
->adpa_reg
, adpa
);
284 static bool intel_ironlake_crt_detect_hotplug(struct drm_connector
*connector
)
286 struct drm_device
*dev
= connector
->dev
;
287 struct intel_crt
*crt
= intel_attached_crt(connector
);
288 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
292 /* The first time through, trigger an explicit detection cycle */
293 if (crt
->force_hotplug_required
) {
294 bool turn_off_dac
= HAS_PCH_SPLIT(dev
);
297 crt
->force_hotplug_required
= 0;
299 save_adpa
= adpa
= I915_READ(crt
->adpa_reg
);
300 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa
);
302 adpa
|= ADPA_CRT_HOTPLUG_FORCE_TRIGGER
;
304 adpa
&= ~ADPA_DAC_ENABLE
;
306 I915_WRITE(crt
->adpa_reg
, adpa
);
308 if (wait_for((I915_READ(crt
->adpa_reg
) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER
) == 0,
310 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
313 I915_WRITE(crt
->adpa_reg
, save_adpa
);
314 POSTING_READ(crt
->adpa_reg
);
318 /* Check the status to see if both blue and green are on now */
319 adpa
= I915_READ(crt
->adpa_reg
);
320 if ((adpa
& ADPA_CRT_HOTPLUG_MONITOR_MASK
) != 0)
324 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa
, ret
);
329 static bool valleyview_crt_detect_hotplug(struct drm_connector
*connector
)
331 struct drm_device
*dev
= connector
->dev
;
332 struct intel_crt
*crt
= intel_attached_crt(connector
);
333 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
338 save_adpa
= adpa
= I915_READ(crt
->adpa_reg
);
339 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa
);
341 adpa
|= ADPA_CRT_HOTPLUG_FORCE_TRIGGER
;
343 I915_WRITE(crt
->adpa_reg
, adpa
);
345 if (wait_for((I915_READ(crt
->adpa_reg
) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER
) == 0,
347 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
348 I915_WRITE(crt
->adpa_reg
, save_adpa
);
351 /* Check the status to see if both blue and green are on now */
352 adpa
= I915_READ(crt
->adpa_reg
);
353 if ((adpa
& ADPA_CRT_HOTPLUG_MONITOR_MASK
) != 0)
358 DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa
, ret
);
364 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
366 * Not for i915G/i915GM
368 * \return true if CRT is connected.
369 * \return false if CRT is disconnected.
371 static bool intel_crt_detect_hotplug(struct drm_connector
*connector
)
373 struct drm_device
*dev
= connector
->dev
;
374 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
375 u32 hotplug_en
, orig
, stat
;
379 if (HAS_PCH_SPLIT(dev
))
380 return intel_ironlake_crt_detect_hotplug(connector
);
382 if (IS_VALLEYVIEW(dev
))
383 return valleyview_crt_detect_hotplug(connector
);
386 * On 4 series desktop, CRT detect sequence need to be done twice
387 * to get a reliable result.
390 if (IS_G4X(dev
) && !IS_GM45(dev
))
394 hotplug_en
= orig
= I915_READ(PORT_HOTPLUG_EN
);
395 hotplug_en
|= CRT_HOTPLUG_FORCE_DETECT
;
397 for (i
= 0; i
< tries
; i
++) {
398 /* turn on the FORCE_DETECT */
399 I915_WRITE(PORT_HOTPLUG_EN
, hotplug_en
);
400 /* wait for FORCE_DETECT to go off */
401 if (wait_for((I915_READ(PORT_HOTPLUG_EN
) &
402 CRT_HOTPLUG_FORCE_DETECT
) == 0,
404 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
407 stat
= I915_READ(PORT_HOTPLUG_STAT
);
408 if ((stat
& CRT_HOTPLUG_MONITOR_MASK
) != CRT_HOTPLUG_MONITOR_NONE
)
411 /* clear the interrupt we just generated, if any */
412 I915_WRITE(PORT_HOTPLUG_STAT
, CRT_HOTPLUG_INT_STATUS
);
414 /* and put the bits back */
415 I915_WRITE(PORT_HOTPLUG_EN
, orig
);
420 static struct edid
*intel_crt_get_edid(struct drm_connector
*connector
,
421 struct i2c_adapter
*i2c
)
425 edid
= drm_get_edid(connector
, i2c
);
427 if (!edid
&& !intel_gmbus_is_forced_bit(i2c
)) {
428 DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
429 intel_gmbus_force_bit(i2c
, true);
430 edid
= drm_get_edid(connector
, i2c
);
431 intel_gmbus_force_bit(i2c
, false);
437 /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
438 static int intel_crt_ddc_get_modes(struct drm_connector
*connector
,
439 struct i2c_adapter
*adapter
)
444 edid
= intel_crt_get_edid(connector
, adapter
);
448 ret
= intel_connector_update_modes(connector
, edid
);
454 static bool intel_crt_detect_ddc(struct drm_connector
*connector
)
456 struct intel_crt
*crt
= intel_attached_crt(connector
);
457 struct drm_i915_private
*dev_priv
= crt
->base
.base
.dev
->dev_private
;
459 struct i2c_adapter
*i2c
;
461 BUG_ON(crt
->base
.type
!= INTEL_OUTPUT_ANALOG
);
463 i2c
= intel_gmbus_get_adapter(dev_priv
, dev_priv
->vbt
.crt_ddc_pin
);
464 edid
= intel_crt_get_edid(connector
, i2c
);
467 bool is_digital
= edid
->input
& DRM_EDID_INPUT_DIGITAL
;
470 * This may be a DVI-I connector with a shared DDC
471 * link between analog and digital outputs, so we
472 * have to check the EDID input spec of the attached device.
475 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
479 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
481 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
489 static enum drm_connector_status
490 intel_crt_load_detect(struct intel_crt
*crt
)
492 struct drm_device
*dev
= crt
->base
.base
.dev
;
493 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
494 uint32_t pipe
= to_intel_crtc(crt
->base
.base
.crtc
)->pipe
;
495 uint32_t save_bclrpat
;
496 uint32_t save_vtotal
;
497 uint32_t vtotal
, vactive
;
499 uint32_t vblank
, vblank_start
, vblank_end
;
501 uint32_t bclrpat_reg
;
505 uint32_t pipeconf_reg
;
506 uint32_t pipe_dsl_reg
;
508 enum drm_connector_status status
;
510 DRM_DEBUG_KMS("starting load-detect on CRT\n");
512 bclrpat_reg
= BCLRPAT(pipe
);
513 vtotal_reg
= VTOTAL(pipe
);
514 vblank_reg
= VBLANK(pipe
);
515 vsync_reg
= VSYNC(pipe
);
516 pipeconf_reg
= PIPECONF(pipe
);
517 pipe_dsl_reg
= PIPEDSL(pipe
);
519 save_bclrpat
= I915_READ(bclrpat_reg
);
520 save_vtotal
= I915_READ(vtotal_reg
);
521 vblank
= I915_READ(vblank_reg
);
523 vtotal
= ((save_vtotal
>> 16) & 0xfff) + 1;
524 vactive
= (save_vtotal
& 0x7ff) + 1;
526 vblank_start
= (vblank
& 0xfff) + 1;
527 vblank_end
= ((vblank
>> 16) & 0xfff) + 1;
529 /* Set the border color to purple. */
530 I915_WRITE(bclrpat_reg
, 0x500050);
533 uint32_t pipeconf
= I915_READ(pipeconf_reg
);
534 I915_WRITE(pipeconf_reg
, pipeconf
| PIPECONF_FORCE_BORDER
);
535 POSTING_READ(pipeconf_reg
);
536 /* Wait for next Vblank to substitue
537 * border color for Color info */
538 intel_wait_for_vblank(dev
, pipe
);
539 st00
= I915_READ8(VGA_MSR_WRITE
);
540 status
= ((st00
& (1 << 4)) != 0) ?
541 connector_status_connected
:
542 connector_status_disconnected
;
544 I915_WRITE(pipeconf_reg
, pipeconf
);
546 bool restore_vblank
= false;
550 * If there isn't any border, add some.
551 * Yes, this will flicker
553 if (vblank_start
<= vactive
&& vblank_end
>= vtotal
) {
554 uint32_t vsync
= I915_READ(vsync_reg
);
555 uint32_t vsync_start
= (vsync
& 0xffff) + 1;
557 vblank_start
= vsync_start
;
558 I915_WRITE(vblank_reg
,
560 ((vblank_end
- 1) << 16));
561 restore_vblank
= true;
563 /* sample in the vertical border, selecting the larger one */
564 if (vblank_start
- vactive
>= vtotal
- vblank_end
)
565 vsample
= (vblank_start
+ vactive
) >> 1;
567 vsample
= (vtotal
+ vblank_end
) >> 1;
570 * Wait for the border to be displayed
572 while (I915_READ(pipe_dsl_reg
) >= vactive
)
574 while ((dsl
= I915_READ(pipe_dsl_reg
)) <= vsample
)
577 * Watch ST00 for an entire scanline
583 /* Read the ST00 VGA status register */
584 st00
= I915_READ8(VGA_MSR_WRITE
);
587 } while ((I915_READ(pipe_dsl_reg
) == dsl
));
589 /* restore vblank if necessary */
591 I915_WRITE(vblank_reg
, vblank
);
593 * If more than 3/4 of the scanline detected a monitor,
594 * then it is assumed to be present. This works even on i830,
595 * where there isn't any way to force the border color across
598 status
= detect
* 4 > count
* 3 ?
599 connector_status_connected
:
600 connector_status_disconnected
;
603 /* Restore previous settings */
604 I915_WRITE(bclrpat_reg
, save_bclrpat
);
609 static enum drm_connector_status
610 intel_crt_detect(struct drm_connector
*connector
, bool force
)
612 struct drm_device
*dev
= connector
->dev
;
613 struct intel_crt
*crt
= intel_attached_crt(connector
);
614 enum drm_connector_status status
;
615 struct intel_load_detect_pipe tmp
;
617 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
618 connector
->base
.id
, drm_get_connector_name(connector
),
621 if (I915_HAS_HOTPLUG(dev
)) {
622 /* We can not rely on the HPD pin always being correctly wired
623 * up, for example many KVM do not pass it through, and so
624 * only trust an assertion that the monitor is connected.
626 if (intel_crt_detect_hotplug(connector
)) {
627 DRM_DEBUG_KMS("CRT detected via hotplug\n");
628 return connector_status_connected
;
630 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
633 if (intel_crt_detect_ddc(connector
))
634 return connector_status_connected
;
636 /* Load detection is broken on HPD capable machines. Whoever wants a
637 * broken monitor (without edid) to work behind a broken kvm (that fails
638 * to have the right resistors for HP detection) needs to fix this up.
639 * For now just bail out. */
640 if (I915_HAS_HOTPLUG(dev
))
641 return connector_status_disconnected
;
644 return connector
->status
;
646 /* for pre-945g platforms use load detect */
647 if (intel_get_load_detect_pipe(connector
, NULL
, &tmp
)) {
648 if (intel_crt_detect_ddc(connector
))
649 status
= connector_status_connected
;
651 status
= intel_crt_load_detect(crt
);
652 intel_release_load_detect_pipe(connector
, &tmp
);
654 status
= connector_status_unknown
;
659 static void intel_crt_destroy(struct drm_connector
*connector
)
661 drm_sysfs_connector_remove(connector
);
662 drm_connector_cleanup(connector
);
666 static int intel_crt_get_modes(struct drm_connector
*connector
)
668 struct drm_device
*dev
= connector
->dev
;
669 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
671 struct i2c_adapter
*i2c
;
673 i2c
= intel_gmbus_get_adapter(dev_priv
, dev_priv
->vbt
.crt_ddc_pin
);
674 ret
= intel_crt_ddc_get_modes(connector
, i2c
);
675 if (ret
|| !IS_G4X(dev
))
678 /* Try to probe digital port for output in DVI-I -> VGA mode. */
679 i2c
= intel_gmbus_get_adapter(dev_priv
, GMBUS_PORT_DPB
);
680 return intel_crt_ddc_get_modes(connector
, i2c
);
683 static int intel_crt_set_property(struct drm_connector
*connector
,
684 struct drm_property
*property
,
690 static void intel_crt_reset(struct drm_connector
*connector
)
692 struct drm_device
*dev
= connector
->dev
;
693 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
694 struct intel_crt
*crt
= intel_attached_crt(connector
);
696 if (INTEL_INFO(dev
)->gen
>= 5) {
699 adpa
= I915_READ(crt
->adpa_reg
);
700 adpa
&= ~ADPA_CRT_HOTPLUG_MASK
;
701 adpa
|= ADPA_HOTPLUG_BITS
;
702 I915_WRITE(crt
->adpa_reg
, adpa
);
703 POSTING_READ(crt
->adpa_reg
);
705 DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa
);
706 crt
->force_hotplug_required
= 1;
712 * Routines for controlling stuff on the analog port
715 static const struct drm_connector_funcs intel_crt_connector_funcs
= {
716 .reset
= intel_crt_reset
,
717 .dpms
= intel_crt_dpms
,
718 .detect
= intel_crt_detect
,
719 .fill_modes
= drm_helper_probe_single_connector_modes
,
720 .destroy
= intel_crt_destroy
,
721 .set_property
= intel_crt_set_property
,
724 static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs
= {
725 .mode_valid
= intel_crt_mode_valid
,
726 .get_modes
= intel_crt_get_modes
,
727 .best_encoder
= intel_best_encoder
,
730 static const struct drm_encoder_funcs intel_crt_enc_funcs
= {
731 .destroy
= intel_encoder_destroy
,
734 static int __init
intel_no_crt_dmi_callback(const struct dmi_system_id
*id
)
736 DRM_INFO("Skipping CRT initialization for %s\n", id
->ident
);
740 static const struct dmi_system_id intel_no_crt
[] = {
742 .callback
= intel_no_crt_dmi_callback
,
745 DMI_MATCH(DMI_SYS_VENDOR
, "ACER"),
746 DMI_MATCH(DMI_PRODUCT_NAME
, "ZGB"),
752 void intel_crt_init(struct drm_device
*dev
)
754 struct drm_connector
*connector
;
755 struct intel_crt
*crt
;
756 struct intel_connector
*intel_connector
;
757 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
759 /* Skip machines without VGA that falsely report hotplug events */
760 if (dmi_check_system(intel_no_crt
))
763 crt
= kzalloc(sizeof(struct intel_crt
), GFP_KERNEL
);
767 intel_connector
= kzalloc(sizeof(*intel_connector
), GFP_KERNEL
);
768 if (!intel_connector
) {
773 connector
= &intel_connector
->base
;
774 crt
->connector
= intel_connector
;
775 drm_connector_init(dev
, &intel_connector
->base
,
776 &intel_crt_connector_funcs
, DRM_MODE_CONNECTOR_VGA
);
778 drm_encoder_init(dev
, &crt
->base
.base
, &intel_crt_enc_funcs
,
779 DRM_MODE_ENCODER_DAC
);
781 intel_connector_attach_encoder(intel_connector
, &crt
->base
);
783 crt
->base
.type
= INTEL_OUTPUT_ANALOG
;
784 crt
->base
.cloneable
= true;
786 crt
->base
.crtc_mask
= (1 << 0);
788 crt
->base
.crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
791 connector
->interlace_allowed
= 0;
793 connector
->interlace_allowed
= 1;
794 connector
->doublescan_allowed
= 0;
796 if (HAS_PCH_SPLIT(dev
))
797 crt
->adpa_reg
= PCH_ADPA
;
798 else if (IS_VALLEYVIEW(dev
))
799 crt
->adpa_reg
= VLV_ADPA
;
801 crt
->adpa_reg
= ADPA
;
803 crt
->base
.compute_config
= intel_crt_compute_config
;
804 crt
->base
.mode_set
= intel_crt_mode_set
;
805 crt
->base
.disable
= intel_disable_crt
;
806 crt
->base
.enable
= intel_enable_crt
;
807 crt
->base
.get_config
= intel_crt_get_config
;
808 if (I915_HAS_HOTPLUG(dev
))
809 crt
->base
.hpd_pin
= HPD_CRT
;
811 crt
->base
.get_hw_state
= intel_ddi_get_hw_state
;
813 crt
->base
.get_hw_state
= intel_crt_get_hw_state
;
814 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
816 drm_connector_helper_add(connector
, &intel_crt_connector_helper_funcs
);
818 drm_sysfs_connector_add(connector
);
820 if (!I915_HAS_HOTPLUG(dev
))
821 intel_connector
->polled
= DRM_CONNECTOR_POLL_CONNECT
;
824 * Configure the automatic hotplug detection stuff
826 crt
->force_hotplug_required
= 0;
829 * TODO: find a proper way to discover whether we need to set the the
830 * polarity and link reversal bits or not, instead of relying on the
833 if (HAS_PCH_LPT(dev
)) {
834 u32 fdi_config
= FDI_RX_POLARITY_REVERSED_LPT
|
835 FDI_RX_LINK_REVERSAL_OVERRIDE
;
837 dev_priv
->fdi_rx_config
= I915_READ(_FDI_RXA_CTL
) & fdi_config
;