2 * Copyright 2006 Dave Airlie <airlied@linux.ie>
3 * Copyright © 2006-2009 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Eric Anholt <eric@anholt.net>
26 * Jesse Barnes <jesse.barnes@intel.com>
29 #include <linux/i2c.h>
30 #include <linux/slab.h>
31 #include <linux/delay.h>
36 #include "intel_drv.h"
41 struct intel_encoder base
;
48 void (*write_infoframe
)(struct drm_encoder
*encoder
,
49 struct dip_infoframe
*frame
);
52 static struct intel_hdmi
*enc_to_intel_hdmi(struct drm_encoder
*encoder
)
54 return container_of(encoder
, struct intel_hdmi
, base
.base
);
57 static struct intel_hdmi
*intel_attached_hdmi(struct drm_connector
*connector
)
59 return container_of(intel_attached_encoder(connector
),
60 struct intel_hdmi
, base
);
63 void intel_dip_infoframe_csum(struct dip_infoframe
*frame
)
65 uint8_t *data
= (uint8_t *)frame
;
72 for (i
= 0; i
< frame
->len
+ DIP_HEADER_SIZE
; i
++)
75 frame
->checksum
= 0x100 - sum
;
78 static u32
intel_infoframe_index(struct dip_infoframe
*frame
)
82 switch (frame
->type
) {
84 flags
|= VIDEO_DIP_SELECT_AVI
;
87 flags
|= VIDEO_DIP_SELECT_SPD
;
90 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame
->type
);
97 static u32
intel_infoframe_flags(struct dip_infoframe
*frame
)
101 switch (frame
->type
) {
103 flags
|= VIDEO_DIP_ENABLE_AVI
| VIDEO_DIP_FREQ_VSYNC
;
106 flags
|= VIDEO_DIP_ENABLE_SPD
| VIDEO_DIP_FREQ_VSYNC
;
109 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame
->type
);
116 static void i9xx_write_infoframe(struct drm_encoder
*encoder
,
117 struct dip_infoframe
*frame
)
119 uint32_t *data
= (uint32_t *)frame
;
120 struct drm_device
*dev
= encoder
->dev
;
121 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
122 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(encoder
);
123 u32 port
, flags
, val
= I915_READ(VIDEO_DIP_CTL
);
124 unsigned i
, len
= DIP_HEADER_SIZE
+ frame
->len
;
127 /* XXX first guess at handling video port, is this corrent? */
128 if (intel_hdmi
->sdvox_reg
== SDVOB
)
129 port
= VIDEO_DIP_PORT_B
;
130 else if (intel_hdmi
->sdvox_reg
== SDVOC
)
131 port
= VIDEO_DIP_PORT_C
;
135 flags
= intel_infoframe_index(frame
);
137 val
&= ~VIDEO_DIP_SELECT_MASK
;
139 I915_WRITE(VIDEO_DIP_CTL
, VIDEO_DIP_ENABLE
| val
| port
| flags
);
141 for (i
= 0; i
< len
; i
+= 4) {
142 I915_WRITE(VIDEO_DIP_DATA
, *data
);
146 flags
|= intel_infoframe_flags(frame
);
148 I915_WRITE(VIDEO_DIP_CTL
, VIDEO_DIP_ENABLE
| val
| port
| flags
);
151 static void ironlake_write_infoframe(struct drm_encoder
*encoder
,
152 struct dip_infoframe
*frame
)
154 uint32_t *data
= (uint32_t *)frame
;
155 struct drm_device
*dev
= encoder
->dev
;
156 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
157 struct drm_crtc
*crtc
= encoder
->crtc
;
158 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
159 int reg
= TVIDEO_DIP_CTL(intel_crtc
->pipe
);
160 unsigned i
, len
= DIP_HEADER_SIZE
+ frame
->len
;
161 u32 flags
, val
= I915_READ(reg
);
163 intel_wait_for_vblank(dev
, intel_crtc
->pipe
);
165 flags
= intel_infoframe_index(frame
);
167 val
&= ~(VIDEO_DIP_SELECT_MASK
| 0xf); /* clear DIP data offset */
169 I915_WRITE(reg
, VIDEO_DIP_ENABLE
| val
| flags
);
171 for (i
= 0; i
< len
; i
+= 4) {
172 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc
->pipe
), *data
);
176 flags
|= intel_infoframe_flags(frame
);
178 I915_WRITE(reg
, VIDEO_DIP_ENABLE
| val
| flags
);
180 static void intel_set_infoframe(struct drm_encoder
*encoder
,
181 struct dip_infoframe
*frame
)
183 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(encoder
);
185 if (!intel_hdmi
->has_hdmi_sink
)
188 intel_dip_infoframe_csum(frame
);
189 intel_hdmi
->write_infoframe(encoder
, frame
);
192 static void intel_hdmi_set_avi_infoframe(struct drm_encoder
*encoder
)
194 struct dip_infoframe avi_if
= {
195 .type
= DIP_TYPE_AVI
,
196 .ver
= DIP_VERSION_AVI
,
200 intel_set_infoframe(encoder
, &avi_if
);
203 static void intel_hdmi_set_spd_infoframe(struct drm_encoder
*encoder
)
205 struct dip_infoframe spd_if
;
207 memset(&spd_if
, 0, sizeof(spd_if
));
208 spd_if
.type
= DIP_TYPE_SPD
;
209 spd_if
.ver
= DIP_VERSION_SPD
;
210 spd_if
.len
= DIP_LEN_SPD
;
211 strcpy(spd_if
.body
.spd
.vn
, "Intel");
212 strcpy(spd_if
.body
.spd
.pd
, "Integrated gfx");
213 spd_if
.body
.spd
.sdi
= DIP_SPD_PC
;
215 intel_set_infoframe(encoder
, &spd_if
);
218 static void intel_hdmi_mode_set(struct drm_encoder
*encoder
,
219 struct drm_display_mode
*mode
,
220 struct drm_display_mode
*adjusted_mode
)
222 struct drm_device
*dev
= encoder
->dev
;
223 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
224 struct drm_crtc
*crtc
= encoder
->crtc
;
225 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
226 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(encoder
);
229 sdvox
= SDVO_ENCODING_HDMI
| SDVO_BORDER_ENABLE
;
230 if (!HAS_PCH_SPLIT(dev
))
231 sdvox
|= intel_hdmi
->color_range
;
232 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
233 sdvox
|= SDVO_VSYNC_ACTIVE_HIGH
;
234 if (adjusted_mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
235 sdvox
|= SDVO_HSYNC_ACTIVE_HIGH
;
237 if (intel_crtc
->bpp
> 24)
238 sdvox
|= COLOR_FORMAT_12bpc
;
240 sdvox
|= COLOR_FORMAT_8bpc
;
242 /* Required on CPT */
243 if (intel_hdmi
->has_hdmi_sink
&& HAS_PCH_CPT(dev
))
244 sdvox
|= HDMI_MODE_SELECT
;
246 if (intel_hdmi
->has_audio
) {
247 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
248 pipe_name(intel_crtc
->pipe
));
249 sdvox
|= SDVO_AUDIO_ENABLE
;
250 sdvox
|= SDVO_NULL_PACKETS_DURING_VSYNC
;
251 intel_write_eld(encoder
, adjusted_mode
);
254 if (HAS_PCH_CPT(dev
))
255 sdvox
|= PORT_TRANS_SEL_CPT(intel_crtc
->pipe
);
256 else if (intel_crtc
->pipe
== 1)
257 sdvox
|= SDVO_PIPE_B_SELECT
;
259 I915_WRITE(intel_hdmi
->sdvox_reg
, sdvox
);
260 POSTING_READ(intel_hdmi
->sdvox_reg
);
262 intel_hdmi_set_avi_infoframe(encoder
);
263 intel_hdmi_set_spd_infoframe(encoder
);
266 static void intel_hdmi_dpms(struct drm_encoder
*encoder
, int mode
)
268 struct drm_device
*dev
= encoder
->dev
;
269 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
270 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(encoder
);
272 u32 enable_bits
= SDVO_ENABLE
;
274 if (intel_hdmi
->has_audio
)
275 enable_bits
|= SDVO_AUDIO_ENABLE
;
277 temp
= I915_READ(intel_hdmi
->sdvox_reg
);
279 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
280 * we do this anyway which shows more stable in testing.
282 if (HAS_PCH_SPLIT(dev
)) {
283 I915_WRITE(intel_hdmi
->sdvox_reg
, temp
& ~SDVO_ENABLE
);
284 POSTING_READ(intel_hdmi
->sdvox_reg
);
287 if (mode
!= DRM_MODE_DPMS_ON
) {
288 temp
&= ~enable_bits
;
293 I915_WRITE(intel_hdmi
->sdvox_reg
, temp
);
294 POSTING_READ(intel_hdmi
->sdvox_reg
);
296 /* HW workaround, need to write this twice for issue that may result
297 * in first write getting masked.
299 if (HAS_PCH_SPLIT(dev
)) {
300 I915_WRITE(intel_hdmi
->sdvox_reg
, temp
);
301 POSTING_READ(intel_hdmi
->sdvox_reg
);
305 static int intel_hdmi_mode_valid(struct drm_connector
*connector
,
306 struct drm_display_mode
*mode
)
308 if (mode
->clock
> 165000)
309 return MODE_CLOCK_HIGH
;
310 if (mode
->clock
< 20000)
311 return MODE_CLOCK_LOW
;
313 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
314 return MODE_NO_DBLESCAN
;
319 static bool intel_hdmi_mode_fixup(struct drm_encoder
*encoder
,
320 struct drm_display_mode
*mode
,
321 struct drm_display_mode
*adjusted_mode
)
326 static enum drm_connector_status
327 intel_hdmi_detect(struct drm_connector
*connector
, bool force
)
329 struct intel_hdmi
*intel_hdmi
= intel_attached_hdmi(connector
);
330 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
332 enum drm_connector_status status
= connector_status_disconnected
;
334 intel_hdmi
->has_hdmi_sink
= false;
335 intel_hdmi
->has_audio
= false;
336 edid
= drm_get_edid(connector
,
337 &dev_priv
->gmbus
[intel_hdmi
->ddc_bus
].adapter
);
340 if (edid
->input
& DRM_EDID_INPUT_DIGITAL
) {
341 status
= connector_status_connected
;
342 intel_hdmi
->has_hdmi_sink
= drm_detect_hdmi_monitor(edid
);
343 intel_hdmi
->has_audio
= drm_detect_monitor_audio(edid
);
345 connector
->display_info
.raw_edid
= NULL
;
349 if (status
== connector_status_connected
) {
350 if (intel_hdmi
->force_audio
)
351 intel_hdmi
->has_audio
= intel_hdmi
->force_audio
> 0;
357 static int intel_hdmi_get_modes(struct drm_connector
*connector
)
359 struct intel_hdmi
*intel_hdmi
= intel_attached_hdmi(connector
);
360 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
362 /* We should parse the EDID data and find out if it's an HDMI sink so
363 * we can send audio to it.
366 return intel_ddc_get_modes(connector
,
367 &dev_priv
->gmbus
[intel_hdmi
->ddc_bus
].adapter
);
371 intel_hdmi_detect_audio(struct drm_connector
*connector
)
373 struct intel_hdmi
*intel_hdmi
= intel_attached_hdmi(connector
);
374 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
376 bool has_audio
= false;
378 edid
= drm_get_edid(connector
,
379 &dev_priv
->gmbus
[intel_hdmi
->ddc_bus
].adapter
);
381 if (edid
->input
& DRM_EDID_INPUT_DIGITAL
)
382 has_audio
= drm_detect_monitor_audio(edid
);
384 connector
->display_info
.raw_edid
= NULL
;
392 intel_hdmi_set_property(struct drm_connector
*connector
,
393 struct drm_property
*property
,
396 struct intel_hdmi
*intel_hdmi
= intel_attached_hdmi(connector
);
397 struct drm_i915_private
*dev_priv
= connector
->dev
->dev_private
;
400 ret
= drm_connector_property_set_value(connector
, property
, val
);
404 if (property
== dev_priv
->force_audio_property
) {
408 if (i
== intel_hdmi
->force_audio
)
411 intel_hdmi
->force_audio
= i
;
414 has_audio
= intel_hdmi_detect_audio(connector
);
418 if (has_audio
== intel_hdmi
->has_audio
)
421 intel_hdmi
->has_audio
= has_audio
;
425 if (property
== dev_priv
->broadcast_rgb_property
) {
426 if (val
== !!intel_hdmi
->color_range
)
429 intel_hdmi
->color_range
= val
? SDVO_COLOR_RANGE_16_235
: 0;
436 if (intel_hdmi
->base
.base
.crtc
) {
437 struct drm_crtc
*crtc
= intel_hdmi
->base
.base
.crtc
;
438 drm_crtc_helper_set_mode(crtc
, &crtc
->mode
,
446 static void intel_hdmi_destroy(struct drm_connector
*connector
)
448 drm_sysfs_connector_remove(connector
);
449 drm_connector_cleanup(connector
);
453 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs
= {
454 .dpms
= intel_hdmi_dpms
,
455 .mode_fixup
= intel_hdmi_mode_fixup
,
456 .prepare
= intel_encoder_prepare
,
457 .mode_set
= intel_hdmi_mode_set
,
458 .commit
= intel_encoder_commit
,
461 static const struct drm_connector_funcs intel_hdmi_connector_funcs
= {
462 .dpms
= drm_helper_connector_dpms
,
463 .detect
= intel_hdmi_detect
,
464 .fill_modes
= drm_helper_probe_single_connector_modes
,
465 .set_property
= intel_hdmi_set_property
,
466 .destroy
= intel_hdmi_destroy
,
469 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs
= {
470 .get_modes
= intel_hdmi_get_modes
,
471 .mode_valid
= intel_hdmi_mode_valid
,
472 .best_encoder
= intel_best_encoder
,
475 static const struct drm_encoder_funcs intel_hdmi_enc_funcs
= {
476 .destroy
= intel_encoder_destroy
,
480 intel_hdmi_add_properties(struct intel_hdmi
*intel_hdmi
, struct drm_connector
*connector
)
482 intel_attach_force_audio_property(connector
);
483 intel_attach_broadcast_rgb_property(connector
);
486 void intel_hdmi_init(struct drm_device
*dev
, int sdvox_reg
)
488 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
489 struct drm_connector
*connector
;
490 struct intel_encoder
*intel_encoder
;
491 struct intel_connector
*intel_connector
;
492 struct intel_hdmi
*intel_hdmi
;
495 intel_hdmi
= kzalloc(sizeof(struct intel_hdmi
), GFP_KERNEL
);
499 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
500 if (!intel_connector
) {
505 intel_encoder
= &intel_hdmi
->base
;
506 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_hdmi_enc_funcs
,
507 DRM_MODE_ENCODER_TMDS
);
509 connector
= &intel_connector
->base
;
510 drm_connector_init(dev
, connector
, &intel_hdmi_connector_funcs
,
511 DRM_MODE_CONNECTOR_HDMIA
);
512 drm_connector_helper_add(connector
, &intel_hdmi_connector_helper_funcs
);
514 intel_encoder
->type
= INTEL_OUTPUT_HDMI
;
516 connector
->polled
= DRM_CONNECTOR_POLL_HPD
;
517 connector
->interlace_allowed
= 0;
518 connector
->doublescan_allowed
= 0;
519 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
521 /* Set up the DDC bus. */
522 if (sdvox_reg
== SDVOB
) {
523 intel_encoder
->clone_mask
= (1 << INTEL_HDMIB_CLONE_BIT
);
524 intel_hdmi
->ddc_bus
= GMBUS_PORT_DPB
;
525 dev_priv
->hotplug_supported_mask
|= HDMIB_HOTPLUG_INT_STATUS
;
526 } else if (sdvox_reg
== SDVOC
) {
527 intel_encoder
->clone_mask
= (1 << INTEL_HDMIC_CLONE_BIT
);
528 intel_hdmi
->ddc_bus
= GMBUS_PORT_DPC
;
529 dev_priv
->hotplug_supported_mask
|= HDMIC_HOTPLUG_INT_STATUS
;
530 } else if (sdvox_reg
== HDMIB
) {
531 intel_encoder
->clone_mask
= (1 << INTEL_HDMID_CLONE_BIT
);
532 intel_hdmi
->ddc_bus
= GMBUS_PORT_DPB
;
533 dev_priv
->hotplug_supported_mask
|= HDMIB_HOTPLUG_INT_STATUS
;
534 } else if (sdvox_reg
== HDMIC
) {
535 intel_encoder
->clone_mask
= (1 << INTEL_HDMIE_CLONE_BIT
);
536 intel_hdmi
->ddc_bus
= GMBUS_PORT_DPC
;
537 dev_priv
->hotplug_supported_mask
|= HDMIC_HOTPLUG_INT_STATUS
;
538 } else if (sdvox_reg
== HDMID
) {
539 intel_encoder
->clone_mask
= (1 << INTEL_HDMIF_CLONE_BIT
);
540 intel_hdmi
->ddc_bus
= GMBUS_PORT_DPD
;
541 dev_priv
->hotplug_supported_mask
|= HDMID_HOTPLUG_INT_STATUS
;
544 intel_hdmi
->sdvox_reg
= sdvox_reg
;
546 if (!HAS_PCH_SPLIT(dev
)) {
547 intel_hdmi
->write_infoframe
= i9xx_write_infoframe
;
548 I915_WRITE(VIDEO_DIP_CTL
, 0);
550 intel_hdmi
->write_infoframe
= ironlake_write_infoframe
;
552 I915_WRITE(TVIDEO_DIP_CTL(i
), 0);
555 drm_encoder_helper_add(&intel_encoder
->base
, &intel_hdmi_helper_funcs
);
557 intel_hdmi_add_properties(intel_hdmi
, connector
);
559 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
560 drm_sysfs_connector_add(connector
);
562 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
563 * 0xd. Failure to do so will result in spurious interrupts being
564 * generated on the port when a cable is not attached.
566 if (IS_G4X(dev
) && !IS_GM45(dev
)) {
567 u32 temp
= I915_READ(PEG_BAND_GAP_DATA
);
568 I915_WRITE(PEG_BAND_GAP_DATA
, (temp
& ~0xf) | 0xd);