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1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2020 Intel Corporation
4 *
5 * HDMI support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
6 */
7
8#include "g4x_hdmi.h"
9#include "intel_audio.h"
10#include "intel_connector.h"
11#include "intel_de.h"
12#include "intel_display_types.h"
13#include "intel_dpio_phy.h"
14#include "intel_fifo_underrun.h"
15#include "intel_hdmi.h"
16#include "intel_hotplug.h"
17#include "intel_sideband.h"
18#include "intel_sdvo.h"
19
20static void intel_hdmi_prepare(struct intel_encoder *encoder,
21 const struct intel_crtc_state *crtc_state)
22{
23 struct drm_device *dev = encoder->base.dev;
24 struct drm_i915_private *dev_priv = to_i915(dev);
25 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
26 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
27 const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
28 u32 hdmi_val;
29
30 intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
31
32 hdmi_val = SDVO_ENCODING_HDMI;
33 if (!HAS_PCH_SPLIT(dev_priv) && crtc_state->limited_color_range)
34 hdmi_val |= HDMI_COLOR_RANGE_16_235;
35 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
36 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
37 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
38 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
39
40 if (crtc_state->pipe_bpp > 24)
41 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
42 else
43 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
44
45 if (crtc_state->has_hdmi_sink)
46 hdmi_val |= HDMI_MODE_SELECT_HDMI;
47
48 if (HAS_PCH_CPT(dev_priv))
49 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
50 else if (IS_CHERRYVIEW(dev_priv))
51 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
52 else
53 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
54
55 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, hdmi_val);
56 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
57}
58
59static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
60 enum pipe *pipe)
61{
62 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
63 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
64 intel_wakeref_t wakeref;
65 bool ret;
66
67 wakeref = intel_display_power_get_if_enabled(dev_priv,
68 encoder->power_domain);
69 if (!wakeref)
70 return false;
71
72 ret = intel_sdvo_port_enabled(dev_priv, intel_hdmi->hdmi_reg, pipe);
73
74 intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
75
76 return ret;
77}
78
79static void intel_hdmi_get_config(struct intel_encoder *encoder,
80 struct intel_crtc_state *pipe_config)
81{
82 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
83 struct drm_device *dev = encoder->base.dev;
84 struct drm_i915_private *dev_priv = to_i915(dev);
85 u32 tmp, flags = 0;
86 int dotclock;
87
88 pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
89
90 tmp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
91
92 if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
93 flags |= DRM_MODE_FLAG_PHSYNC;
94 else
95 flags |= DRM_MODE_FLAG_NHSYNC;
96
97 if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
98 flags |= DRM_MODE_FLAG_PVSYNC;
99 else
100 flags |= DRM_MODE_FLAG_NVSYNC;
101
102 if (tmp & HDMI_MODE_SELECT_HDMI)
103 pipe_config->has_hdmi_sink = true;
104
105 pipe_config->infoframes.enable |=
106 intel_hdmi_infoframes_enabled(encoder, pipe_config);
107
108 if (pipe_config->infoframes.enable)
109 pipe_config->has_infoframe = true;
110
111 if (tmp & HDMI_AUDIO_ENABLE)
112 pipe_config->has_audio = true;
113
114 if (!HAS_PCH_SPLIT(dev_priv) &&
115 tmp & HDMI_COLOR_RANGE_16_235)
116 pipe_config->limited_color_range = true;
117
118 pipe_config->hw.adjusted_mode.flags |= flags;
119
120 if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
121 dotclock = pipe_config->port_clock * 2 / 3;
122 else
123 dotclock = pipe_config->port_clock;
124
125 if (pipe_config->pixel_multiplier)
126 dotclock /= pipe_config->pixel_multiplier;
127
128 pipe_config->hw.adjusted_mode.crtc_clock = dotclock;
129
130 pipe_config->lane_count = 4;
131
132 intel_hdmi_read_gcp_infoframe(encoder, pipe_config);
133
134 intel_read_infoframe(encoder, pipe_config,
135 HDMI_INFOFRAME_TYPE_AVI,
136 &pipe_config->infoframes.avi);
137 intel_read_infoframe(encoder, pipe_config,
138 HDMI_INFOFRAME_TYPE_SPD,
139 &pipe_config->infoframes.spd);
140 intel_read_infoframe(encoder, pipe_config,
141 HDMI_INFOFRAME_TYPE_VENDOR,
142 &pipe_config->infoframes.hdmi);
143}
144
145static void intel_enable_hdmi_audio(struct intel_encoder *encoder,
146 const struct intel_crtc_state *pipe_config,
147 const struct drm_connector_state *conn_state)
148{
149 struct drm_i915_private *i915 = to_i915(encoder->base.dev);
150 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
151
152 drm_WARN_ON(&i915->drm, !pipe_config->has_hdmi_sink);
153 drm_dbg_kms(&i915->drm, "Enabling HDMI audio on pipe %c\n",
154 pipe_name(crtc->pipe));
155 intel_audio_codec_enable(encoder, pipe_config, conn_state);
156}
157
158static void g4x_enable_hdmi(struct intel_atomic_state *state,
159 struct intel_encoder *encoder,
160 const struct intel_crtc_state *pipe_config,
161 const struct drm_connector_state *conn_state)
162{
163 struct drm_device *dev = encoder->base.dev;
164 struct drm_i915_private *dev_priv = to_i915(dev);
165 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
166 u32 temp;
167
168 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
169
170 temp |= SDVO_ENABLE;
171 if (pipe_config->has_audio)
172 temp |= HDMI_AUDIO_ENABLE;
173
174 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
175 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
176
177 if (pipe_config->has_audio)
178 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
179}
180
181static void ibx_enable_hdmi(struct intel_atomic_state *state,
182 struct intel_encoder *encoder,
183 const struct intel_crtc_state *pipe_config,
184 const struct drm_connector_state *conn_state)
185{
186 struct drm_device *dev = encoder->base.dev;
187 struct drm_i915_private *dev_priv = to_i915(dev);
188 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
189 u32 temp;
190
191 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
192
193 temp |= SDVO_ENABLE;
194 if (pipe_config->has_audio)
195 temp |= HDMI_AUDIO_ENABLE;
196
197 /*
198 * HW workaround, need to write this twice for issue
199 * that may result in first write getting masked.
200 */
201 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
202 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
203 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
204 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
205
206 /*
207 * HW workaround, need to toggle enable bit off and on
208 * for 12bpc with pixel repeat.
209 *
210 * FIXME: BSpec says this should be done at the end of
211 * the modeset sequence, so not sure if this isn't too soon.
212 */
213 if (pipe_config->pipe_bpp > 24 &&
214 pipe_config->pixel_multiplier > 1) {
215 intel_de_write(dev_priv, intel_hdmi->hdmi_reg,
216 temp & ~SDVO_ENABLE);
217 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
218
219 /*
220 * HW workaround, need to write this twice for issue
221 * that may result in first write getting masked.
222 */
223 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
224 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
225 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
226 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
227 }
228
229 if (pipe_config->has_audio)
230 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
231}
232
233static void cpt_enable_hdmi(struct intel_atomic_state *state,
234 struct intel_encoder *encoder,
235 const struct intel_crtc_state *pipe_config,
236 const struct drm_connector_state *conn_state)
237{
238 struct drm_device *dev = encoder->base.dev;
239 struct drm_i915_private *dev_priv = to_i915(dev);
240 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
241 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
242 enum pipe pipe = crtc->pipe;
243 u32 temp;
244
245 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
246
247 temp |= SDVO_ENABLE;
248 if (pipe_config->has_audio)
249 temp |= HDMI_AUDIO_ENABLE;
250
251 /*
252 * WaEnableHDMI8bpcBefore12bpc:snb,ivb
253 *
254 * The procedure for 12bpc is as follows:
255 * 1. disable HDMI clock gating
256 * 2. enable HDMI with 8bpc
257 * 3. enable HDMI with 12bpc
258 * 4. enable HDMI clock gating
259 */
260
261 if (pipe_config->pipe_bpp > 24) {
262 intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
263 intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) | TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
264
265 temp &= ~SDVO_COLOR_FORMAT_MASK;
266 temp |= SDVO_COLOR_FORMAT_8bpc;
267 }
268
269 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
270 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
271
272 if (pipe_config->pipe_bpp > 24) {
273 temp &= ~SDVO_COLOR_FORMAT_MASK;
274 temp |= HDMI_COLOR_FORMAT_12bpc;
275
276 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
277 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
278
279 intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
280 intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) & ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
281 }
282
283 if (pipe_config->has_audio)
284 intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
285}
286
287static void vlv_enable_hdmi(struct intel_atomic_state *state,
288 struct intel_encoder *encoder,
289 const struct intel_crtc_state *pipe_config,
290 const struct drm_connector_state *conn_state)
291{
292}
293
294static void intel_disable_hdmi(struct intel_atomic_state *state,
295 struct intel_encoder *encoder,
296 const struct intel_crtc_state *old_crtc_state,
297 const struct drm_connector_state *old_conn_state)
298{
299 struct drm_device *dev = encoder->base.dev;
300 struct drm_i915_private *dev_priv = to_i915(dev);
301 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
302 struct intel_digital_port *dig_port =
303 hdmi_to_dig_port(intel_hdmi);
304 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
305 u32 temp;
306
307 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
308
309 temp &= ~(SDVO_ENABLE | HDMI_AUDIO_ENABLE);
310 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
311 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
312
313 /*
314 * HW workaround for IBX, we need to move the port
315 * to transcoder A after disabling it to allow the
316 * matching DP port to be enabled on transcoder A.
317 */
318 if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
319 /*
320 * We get CPU/PCH FIFO underruns on the other pipe when
321 * doing the workaround. Sweep them under the rug.
322 */
323 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
324 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
325
326 temp &= ~SDVO_PIPE_SEL_MASK;
327 temp |= SDVO_ENABLE | SDVO_PIPE_SEL(PIPE_A);
328 /*
329 * HW workaround, need to write this twice for issue
330 * that may result in first write getting masked.
331 */
332 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
333 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
334 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
335 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
336
337 temp &= ~SDVO_ENABLE;
338 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
339 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
340
341 intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
342 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
343 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
344 }
345
346 dig_port->set_infoframes(encoder,
347 false,
348 old_crtc_state, old_conn_state);
349
350 intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
351}
352
353static void g4x_disable_hdmi(struct intel_atomic_state *state,
354 struct intel_encoder *encoder,
355 const struct intel_crtc_state *old_crtc_state,
356 const struct drm_connector_state *old_conn_state)
357{
358 if (old_crtc_state->has_audio)
359 intel_audio_codec_disable(encoder,
360 old_crtc_state, old_conn_state);
361
362 intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
363}
364
365static void pch_disable_hdmi(struct intel_atomic_state *state,
366 struct intel_encoder *encoder,
367 const struct intel_crtc_state *old_crtc_state,
368 const struct drm_connector_state *old_conn_state)
369{
370 if (old_crtc_state->has_audio)
371 intel_audio_codec_disable(encoder,
372 old_crtc_state, old_conn_state);
373}
374
375static void pch_post_disable_hdmi(struct intel_atomic_state *state,
376 struct intel_encoder *encoder,
377 const struct intel_crtc_state *old_crtc_state,
378 const struct drm_connector_state *old_conn_state)
379{
380 intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
381}
382
383static void intel_hdmi_pre_enable(struct intel_atomic_state *state,
384 struct intel_encoder *encoder,
385 const struct intel_crtc_state *pipe_config,
386 const struct drm_connector_state *conn_state)
387{
388 struct intel_digital_port *dig_port =
389 enc_to_dig_port(encoder);
390
391 intel_hdmi_prepare(encoder, pipe_config);
392
393 dig_port->set_infoframes(encoder,
394 pipe_config->has_infoframe,
395 pipe_config, conn_state);
396}
397
398static void vlv_hdmi_pre_enable(struct intel_atomic_state *state,
399 struct intel_encoder *encoder,
400 const struct intel_crtc_state *pipe_config,
401 const struct drm_connector_state *conn_state)
402{
403 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
404 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
405
406 vlv_phy_pre_encoder_enable(encoder, pipe_config);
407
408 /* HDMI 1.0V-2dB */
409 vlv_set_phy_signal_level(encoder, pipe_config,
410 0x2b245f5f, 0x00002000,
411 0x5578b83a, 0x2b247878);
412
413 dig_port->set_infoframes(encoder,
414 pipe_config->has_infoframe,
415 pipe_config, conn_state);
416
417 g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
418
419 vlv_wait_port_ready(dev_priv, dig_port, 0x0);
420}
421
422static void vlv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
423 struct intel_encoder *encoder,
424 const struct intel_crtc_state *pipe_config,
425 const struct drm_connector_state *conn_state)
426{
427 intel_hdmi_prepare(encoder, pipe_config);
428
429 vlv_phy_pre_pll_enable(encoder, pipe_config);
430}
431
432static void chv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
433 struct intel_encoder *encoder,
434 const struct intel_crtc_state *pipe_config,
435 const struct drm_connector_state *conn_state)
436{
437 intel_hdmi_prepare(encoder, pipe_config);
438
439 chv_phy_pre_pll_enable(encoder, pipe_config);
440}
441
442static void chv_hdmi_post_pll_disable(struct intel_atomic_state *state,
443 struct intel_encoder *encoder,
444 const struct intel_crtc_state *old_crtc_state,
445 const struct drm_connector_state *old_conn_state)
446{
447 chv_phy_post_pll_disable(encoder, old_crtc_state);
448}
449
450static void vlv_hdmi_post_disable(struct intel_atomic_state *state,
451 struct intel_encoder *encoder,
452 const struct intel_crtc_state *old_crtc_state,
453 const struct drm_connector_state *old_conn_state)
454{
455 /* Reset lanes to avoid HDMI flicker (VLV w/a) */
456 vlv_phy_reset_lanes(encoder, old_crtc_state);
457}
458
459static void chv_hdmi_post_disable(struct intel_atomic_state *state,
460 struct intel_encoder *encoder,
461 const struct intel_crtc_state *old_crtc_state,
462 const struct drm_connector_state *old_conn_state)
463{
464 struct drm_device *dev = encoder->base.dev;
465 struct drm_i915_private *dev_priv = to_i915(dev);
466
467 vlv_dpio_get(dev_priv);
468
469 /* Assert data lane reset */
470 chv_data_lane_soft_reset(encoder, old_crtc_state, true);
471
472 vlv_dpio_put(dev_priv);
473}
474
475static void chv_hdmi_pre_enable(struct intel_atomic_state *state,
476 struct intel_encoder *encoder,
477 const struct intel_crtc_state *pipe_config,
478 const struct drm_connector_state *conn_state)
479{
480 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
481 struct drm_device *dev = encoder->base.dev;
482 struct drm_i915_private *dev_priv = to_i915(dev);
483
484 chv_phy_pre_encoder_enable(encoder, pipe_config);
485
486 /* FIXME: Program the support xxx V-dB */
487 /* Use 800mV-0dB */
488 chv_set_phy_signal_level(encoder, pipe_config, 128, 102, false);
489
490 dig_port->set_infoframes(encoder,
491 pipe_config->has_infoframe,
492 pipe_config, conn_state);
493
494 g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
495
496 vlv_wait_port_ready(dev_priv, dig_port, 0x0);
497
498 /* Second common lane will stay alive on its own now */
499 chv_phy_release_cl2_override(encoder);
500}
501
502static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
503 .destroy = intel_encoder_destroy,
504};
505
506static enum intel_hotplug_state
507intel_hdmi_hotplug(struct intel_encoder *encoder,
508 struct intel_connector *connector)
509{
510 enum intel_hotplug_state state;
511
512 state = intel_encoder_hotplug(encoder, connector);
513
514 /*
515 * On many platforms the HDMI live state signal is known to be
516 * unreliable, so we can't use it to detect if a sink is connected or
517 * not. Instead we detect if it's connected based on whether we can
518 * read the EDID or not. That in turn has a problem during disconnect,
519 * since the HPD interrupt may be raised before the DDC lines get
520 * disconnected (due to how the required length of DDC vs. HPD
521 * connector pins are specified) and so we'll still be able to get a
522 * valid EDID. To solve this schedule another detection cycle if this
523 * time around we didn't detect any change in the sink's connection
524 * status.
525 */
526 if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
527 state = INTEL_HOTPLUG_RETRY;
528
529 return state;
530}
531
532void g4x_hdmi_init(struct drm_i915_private *dev_priv,
533 i915_reg_t hdmi_reg, enum port port)
534{
535 struct intel_digital_port *dig_port;
536 struct intel_encoder *intel_encoder;
537 struct intel_connector *intel_connector;
538
539 dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
540 if (!dig_port)
541 return;
542
543 intel_connector = intel_connector_alloc();
544 if (!intel_connector) {
545 kfree(dig_port);
546 return;
547 }
548
549 intel_encoder = &dig_port->base;
550
551 mutex_init(&dig_port->hdcp_mutex);
552
553 drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
554 &intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS,
555 "HDMI %c", port_name(port));
556
557 intel_encoder->hotplug = intel_hdmi_hotplug;
558 intel_encoder->compute_config = intel_hdmi_compute_config;
559 if (HAS_PCH_SPLIT(dev_priv)) {
560 intel_encoder->disable = pch_disable_hdmi;
561 intel_encoder->post_disable = pch_post_disable_hdmi;
562 } else {
563 intel_encoder->disable = g4x_disable_hdmi;
564 }
565 intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
566 intel_encoder->get_config = intel_hdmi_get_config;
567 if (IS_CHERRYVIEW(dev_priv)) {
568 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
569 intel_encoder->pre_enable = chv_hdmi_pre_enable;
570 intel_encoder->enable = vlv_enable_hdmi;
571 intel_encoder->post_disable = chv_hdmi_post_disable;
572 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
573 } else if (IS_VALLEYVIEW(dev_priv)) {
574 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
575 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
576 intel_encoder->enable = vlv_enable_hdmi;
577 intel_encoder->post_disable = vlv_hdmi_post_disable;
578 } else {
579 intel_encoder->pre_enable = intel_hdmi_pre_enable;
580 if (HAS_PCH_CPT(dev_priv))
581 intel_encoder->enable = cpt_enable_hdmi;
582 else if (HAS_PCH_IBX(dev_priv))
583 intel_encoder->enable = ibx_enable_hdmi;
584 else
585 intel_encoder->enable = g4x_enable_hdmi;
586 }
587
588 intel_encoder->type = INTEL_OUTPUT_HDMI;
589 intel_encoder->power_domain = intel_port_to_power_domain(port);
590 intel_encoder->port = port;
591 if (IS_CHERRYVIEW(dev_priv)) {
592 if (port == PORT_D)
593 intel_encoder->pipe_mask = BIT(PIPE_C);
594 else
595 intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
596 } else {
597 intel_encoder->pipe_mask = ~0;
598 }
599 intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
600 intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
601 /*
602 * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
603 * to work on real hardware. And since g4x can send infoframes to
604 * only one port anyway, nothing is lost by allowing it.
605 */
606 if (IS_G4X(dev_priv))
607 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
608
609 dig_port->hdmi.hdmi_reg = hdmi_reg;
610 dig_port->dp.output_reg = INVALID_MMIO_REG;
611 dig_port->max_lanes = 4;
612
613 intel_infoframe_init(dig_port);
614
615 dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
616 intel_hdmi_init_connector(dig_port, intel_connector);
617}
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2020 Intel Corporation
4 *
5 * HDMI support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
6 */
7
8#include "g4x_hdmi.h"
9#include "i915_reg.h"
10#include "intel_audio.h"
11#include "intel_connector.h"
12#include "intel_crtc.h"
13#include "intel_de.h"
14#include "intel_display_power.h"
15#include "intel_display_types.h"
16#include "intel_dpio_phy.h"
17#include "intel_fifo_underrun.h"
18#include "intel_hdmi.h"
19#include "intel_hotplug.h"
20#include "intel_sdvo.h"
21#include "vlv_sideband.h"
22
23static void intel_hdmi_prepare(struct intel_encoder *encoder,
24 const struct intel_crtc_state *crtc_state)
25{
26 struct drm_device *dev = encoder->base.dev;
27 struct drm_i915_private *dev_priv = to_i915(dev);
28 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
29 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
30 const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
31 u32 hdmi_val;
32
33 intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
34
35 hdmi_val = SDVO_ENCODING_HDMI;
36 if (!HAS_PCH_SPLIT(dev_priv) && crtc_state->limited_color_range)
37 hdmi_val |= HDMI_COLOR_RANGE_16_235;
38 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
39 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
40 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
41 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
42
43 if (crtc_state->pipe_bpp > 24)
44 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
45 else
46 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
47
48 if (crtc_state->has_hdmi_sink)
49 hdmi_val |= HDMI_MODE_SELECT_HDMI;
50
51 if (HAS_PCH_CPT(dev_priv))
52 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
53 else if (IS_CHERRYVIEW(dev_priv))
54 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
55 else
56 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
57
58 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, hdmi_val);
59 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
60}
61
62static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
63 enum pipe *pipe)
64{
65 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
66 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
67 intel_wakeref_t wakeref;
68 bool ret;
69
70 wakeref = intel_display_power_get_if_enabled(dev_priv,
71 encoder->power_domain);
72 if (!wakeref)
73 return false;
74
75 ret = intel_sdvo_port_enabled(dev_priv, intel_hdmi->hdmi_reg, pipe);
76
77 intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
78
79 return ret;
80}
81
82static int g4x_hdmi_compute_config(struct intel_encoder *encoder,
83 struct intel_crtc_state *crtc_state,
84 struct drm_connector_state *conn_state)
85{
86 struct drm_i915_private *i915 = to_i915(encoder->base.dev);
87
88 if (HAS_PCH_SPLIT(i915))
89 crtc_state->has_pch_encoder = true;
90
91 return intel_hdmi_compute_config(encoder, crtc_state, conn_state);
92}
93
94static void intel_hdmi_get_config(struct intel_encoder *encoder,
95 struct intel_crtc_state *pipe_config)
96{
97 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
98 struct drm_device *dev = encoder->base.dev;
99 struct drm_i915_private *dev_priv = to_i915(dev);
100 u32 tmp, flags = 0;
101 int dotclock;
102
103 pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
104
105 tmp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
106
107 if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
108 flags |= DRM_MODE_FLAG_PHSYNC;
109 else
110 flags |= DRM_MODE_FLAG_NHSYNC;
111
112 if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
113 flags |= DRM_MODE_FLAG_PVSYNC;
114 else
115 flags |= DRM_MODE_FLAG_NVSYNC;
116
117 if (tmp & HDMI_MODE_SELECT_HDMI)
118 pipe_config->has_hdmi_sink = true;
119
120 pipe_config->infoframes.enable |=
121 intel_hdmi_infoframes_enabled(encoder, pipe_config);
122
123 if (pipe_config->infoframes.enable)
124 pipe_config->has_infoframe = true;
125
126 if (tmp & HDMI_AUDIO_ENABLE)
127 pipe_config->has_audio = true;
128
129 if (!HAS_PCH_SPLIT(dev_priv) &&
130 tmp & HDMI_COLOR_RANGE_16_235)
131 pipe_config->limited_color_range = true;
132
133 pipe_config->hw.adjusted_mode.flags |= flags;
134
135 if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
136 dotclock = DIV_ROUND_CLOSEST(pipe_config->port_clock * 2, 3);
137 else
138 dotclock = pipe_config->port_clock;
139
140 if (pipe_config->pixel_multiplier)
141 dotclock /= pipe_config->pixel_multiplier;
142
143 pipe_config->hw.adjusted_mode.crtc_clock = dotclock;
144
145 pipe_config->lane_count = 4;
146
147 intel_hdmi_read_gcp_infoframe(encoder, pipe_config);
148
149 intel_read_infoframe(encoder, pipe_config,
150 HDMI_INFOFRAME_TYPE_AVI,
151 &pipe_config->infoframes.avi);
152 intel_read_infoframe(encoder, pipe_config,
153 HDMI_INFOFRAME_TYPE_SPD,
154 &pipe_config->infoframes.spd);
155 intel_read_infoframe(encoder, pipe_config,
156 HDMI_INFOFRAME_TYPE_VENDOR,
157 &pipe_config->infoframes.hdmi);
158}
159
160static void g4x_hdmi_enable_port(struct intel_encoder *encoder,
161 const struct intel_crtc_state *pipe_config)
162{
163 struct drm_device *dev = encoder->base.dev;
164 struct drm_i915_private *dev_priv = to_i915(dev);
165 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
166 u32 temp;
167
168 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
169
170 temp |= SDVO_ENABLE;
171 if (pipe_config->has_audio)
172 temp |= HDMI_AUDIO_ENABLE;
173
174 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
175 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
176}
177
178static void g4x_enable_hdmi(struct intel_atomic_state *state,
179 struct intel_encoder *encoder,
180 const struct intel_crtc_state *pipe_config,
181 const struct drm_connector_state *conn_state)
182{
183 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
184
185 g4x_hdmi_enable_port(encoder, pipe_config);
186
187 drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
188 !pipe_config->has_hdmi_sink);
189 intel_audio_codec_enable(encoder, pipe_config, conn_state);
190}
191
192static void ibx_enable_hdmi(struct intel_atomic_state *state,
193 struct intel_encoder *encoder,
194 const struct intel_crtc_state *pipe_config,
195 const struct drm_connector_state *conn_state)
196{
197 struct drm_device *dev = encoder->base.dev;
198 struct drm_i915_private *dev_priv = to_i915(dev);
199 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
200 u32 temp;
201
202 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
203
204 temp |= SDVO_ENABLE;
205 if (pipe_config->has_audio)
206 temp |= HDMI_AUDIO_ENABLE;
207
208 /*
209 * HW workaround, need to write this twice for issue
210 * that may result in first write getting masked.
211 */
212 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
213 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
214 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
215 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
216
217 /*
218 * HW workaround, need to toggle enable bit off and on
219 * for 12bpc with pixel repeat.
220 *
221 * FIXME: BSpec says this should be done at the end of
222 * the modeset sequence, so not sure if this isn't too soon.
223 */
224 if (pipe_config->pipe_bpp > 24 &&
225 pipe_config->pixel_multiplier > 1) {
226 intel_de_write(dev_priv, intel_hdmi->hdmi_reg,
227 temp & ~SDVO_ENABLE);
228 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
229
230 /*
231 * HW workaround, need to write this twice for issue
232 * that may result in first write getting masked.
233 */
234 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
235 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
236 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
237 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
238 }
239
240 drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
241 !pipe_config->has_hdmi_sink);
242 intel_audio_codec_enable(encoder, pipe_config, conn_state);
243}
244
245static void cpt_enable_hdmi(struct intel_atomic_state *state,
246 struct intel_encoder *encoder,
247 const struct intel_crtc_state *pipe_config,
248 const struct drm_connector_state *conn_state)
249{
250 struct drm_device *dev = encoder->base.dev;
251 struct drm_i915_private *dev_priv = to_i915(dev);
252 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
253 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
254 enum pipe pipe = crtc->pipe;
255 u32 temp;
256
257 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
258
259 temp |= SDVO_ENABLE;
260 if (pipe_config->has_audio)
261 temp |= HDMI_AUDIO_ENABLE;
262
263 /*
264 * WaEnableHDMI8bpcBefore12bpc:snb,ivb
265 *
266 * The procedure for 12bpc is as follows:
267 * 1. disable HDMI clock gating
268 * 2. enable HDMI with 8bpc
269 * 3. enable HDMI with 12bpc
270 * 4. enable HDMI clock gating
271 */
272
273 if (pipe_config->pipe_bpp > 24) {
274 intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
275 intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) | TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
276
277 temp &= ~SDVO_COLOR_FORMAT_MASK;
278 temp |= SDVO_COLOR_FORMAT_8bpc;
279 }
280
281 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
282 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
283
284 if (pipe_config->pipe_bpp > 24) {
285 temp &= ~SDVO_COLOR_FORMAT_MASK;
286 temp |= HDMI_COLOR_FORMAT_12bpc;
287
288 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
289 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
290
291 intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
292 intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) & ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
293 }
294
295 drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
296 !pipe_config->has_hdmi_sink);
297 intel_audio_codec_enable(encoder, pipe_config, conn_state);
298}
299
300static void vlv_enable_hdmi(struct intel_atomic_state *state,
301 struct intel_encoder *encoder,
302 const struct intel_crtc_state *pipe_config,
303 const struct drm_connector_state *conn_state)
304{
305 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
306
307 drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
308 !pipe_config->has_hdmi_sink);
309 intel_audio_codec_enable(encoder, pipe_config, conn_state);
310}
311
312static void intel_disable_hdmi(struct intel_atomic_state *state,
313 struct intel_encoder *encoder,
314 const struct intel_crtc_state *old_crtc_state,
315 const struct drm_connector_state *old_conn_state)
316{
317 struct drm_device *dev = encoder->base.dev;
318 struct drm_i915_private *dev_priv = to_i915(dev);
319 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
320 struct intel_digital_port *dig_port =
321 hdmi_to_dig_port(intel_hdmi);
322 struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
323 u32 temp;
324
325 temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
326
327 temp &= ~(SDVO_ENABLE | HDMI_AUDIO_ENABLE);
328 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
329 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
330
331 /*
332 * HW workaround for IBX, we need to move the port
333 * to transcoder A after disabling it to allow the
334 * matching DP port to be enabled on transcoder A.
335 */
336 if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
337 /*
338 * We get CPU/PCH FIFO underruns on the other pipe when
339 * doing the workaround. Sweep them under the rug.
340 */
341 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
342 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
343
344 temp &= ~SDVO_PIPE_SEL_MASK;
345 temp |= SDVO_ENABLE | SDVO_PIPE_SEL(PIPE_A);
346 /*
347 * HW workaround, need to write this twice for issue
348 * that may result in first write getting masked.
349 */
350 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
351 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
352 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
353 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
354
355 temp &= ~SDVO_ENABLE;
356 intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
357 intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
358
359 intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
360 intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
361 intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
362 }
363
364 dig_port->set_infoframes(encoder,
365 false,
366 old_crtc_state, old_conn_state);
367
368 intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
369}
370
371static void g4x_disable_hdmi(struct intel_atomic_state *state,
372 struct intel_encoder *encoder,
373 const struct intel_crtc_state *old_crtc_state,
374 const struct drm_connector_state *old_conn_state)
375{
376 intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
377
378 intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
379}
380
381static void pch_disable_hdmi(struct intel_atomic_state *state,
382 struct intel_encoder *encoder,
383 const struct intel_crtc_state *old_crtc_state,
384 const struct drm_connector_state *old_conn_state)
385{
386 intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
387}
388
389static void pch_post_disable_hdmi(struct intel_atomic_state *state,
390 struct intel_encoder *encoder,
391 const struct intel_crtc_state *old_crtc_state,
392 const struct drm_connector_state *old_conn_state)
393{
394 intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
395}
396
397static void intel_hdmi_pre_enable(struct intel_atomic_state *state,
398 struct intel_encoder *encoder,
399 const struct intel_crtc_state *pipe_config,
400 const struct drm_connector_state *conn_state)
401{
402 struct intel_digital_port *dig_port =
403 enc_to_dig_port(encoder);
404
405 intel_hdmi_prepare(encoder, pipe_config);
406
407 dig_port->set_infoframes(encoder,
408 pipe_config->has_infoframe,
409 pipe_config, conn_state);
410}
411
412static void vlv_hdmi_pre_enable(struct intel_atomic_state *state,
413 struct intel_encoder *encoder,
414 const struct intel_crtc_state *pipe_config,
415 const struct drm_connector_state *conn_state)
416{
417 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
418 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
419
420 vlv_phy_pre_encoder_enable(encoder, pipe_config);
421
422 /* HDMI 1.0V-2dB */
423 vlv_set_phy_signal_level(encoder, pipe_config,
424 0x2b245f5f, 0x00002000,
425 0x5578b83a, 0x2b247878);
426
427 dig_port->set_infoframes(encoder,
428 pipe_config->has_infoframe,
429 pipe_config, conn_state);
430
431 g4x_hdmi_enable_port(encoder, pipe_config);
432
433 vlv_wait_port_ready(dev_priv, dig_port, 0x0);
434}
435
436static void vlv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
437 struct intel_encoder *encoder,
438 const struct intel_crtc_state *pipe_config,
439 const struct drm_connector_state *conn_state)
440{
441 intel_hdmi_prepare(encoder, pipe_config);
442
443 vlv_phy_pre_pll_enable(encoder, pipe_config);
444}
445
446static void chv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
447 struct intel_encoder *encoder,
448 const struct intel_crtc_state *pipe_config,
449 const struct drm_connector_state *conn_state)
450{
451 intel_hdmi_prepare(encoder, pipe_config);
452
453 chv_phy_pre_pll_enable(encoder, pipe_config);
454}
455
456static void chv_hdmi_post_pll_disable(struct intel_atomic_state *state,
457 struct intel_encoder *encoder,
458 const struct intel_crtc_state *old_crtc_state,
459 const struct drm_connector_state *old_conn_state)
460{
461 chv_phy_post_pll_disable(encoder, old_crtc_state);
462}
463
464static void vlv_hdmi_post_disable(struct intel_atomic_state *state,
465 struct intel_encoder *encoder,
466 const struct intel_crtc_state *old_crtc_state,
467 const struct drm_connector_state *old_conn_state)
468{
469 /* Reset lanes to avoid HDMI flicker (VLV w/a) */
470 vlv_phy_reset_lanes(encoder, old_crtc_state);
471}
472
473static void chv_hdmi_post_disable(struct intel_atomic_state *state,
474 struct intel_encoder *encoder,
475 const struct intel_crtc_state *old_crtc_state,
476 const struct drm_connector_state *old_conn_state)
477{
478 struct drm_device *dev = encoder->base.dev;
479 struct drm_i915_private *dev_priv = to_i915(dev);
480
481 vlv_dpio_get(dev_priv);
482
483 /* Assert data lane reset */
484 chv_data_lane_soft_reset(encoder, old_crtc_state, true);
485
486 vlv_dpio_put(dev_priv);
487}
488
489static void chv_hdmi_pre_enable(struct intel_atomic_state *state,
490 struct intel_encoder *encoder,
491 const struct intel_crtc_state *pipe_config,
492 const struct drm_connector_state *conn_state)
493{
494 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
495 struct drm_device *dev = encoder->base.dev;
496 struct drm_i915_private *dev_priv = to_i915(dev);
497
498 chv_phy_pre_encoder_enable(encoder, pipe_config);
499
500 /* FIXME: Program the support xxx V-dB */
501 /* Use 800mV-0dB */
502 chv_set_phy_signal_level(encoder, pipe_config, 128, 102, false);
503
504 dig_port->set_infoframes(encoder,
505 pipe_config->has_infoframe,
506 pipe_config, conn_state);
507
508 g4x_hdmi_enable_port(encoder, pipe_config);
509
510 vlv_wait_port_ready(dev_priv, dig_port, 0x0);
511
512 /* Second common lane will stay alive on its own now */
513 chv_phy_release_cl2_override(encoder);
514}
515
516static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
517 .destroy = intel_encoder_destroy,
518};
519
520static enum intel_hotplug_state
521intel_hdmi_hotplug(struct intel_encoder *encoder,
522 struct intel_connector *connector)
523{
524 enum intel_hotplug_state state;
525
526 state = intel_encoder_hotplug(encoder, connector);
527
528 /*
529 * On many platforms the HDMI live state signal is known to be
530 * unreliable, so we can't use it to detect if a sink is connected or
531 * not. Instead we detect if it's connected based on whether we can
532 * read the EDID or not. That in turn has a problem during disconnect,
533 * since the HPD interrupt may be raised before the DDC lines get
534 * disconnected (due to how the required length of DDC vs. HPD
535 * connector pins are specified) and so we'll still be able to get a
536 * valid EDID. To solve this schedule another detection cycle if this
537 * time around we didn't detect any change in the sink's connection
538 * status.
539 */
540 if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
541 state = INTEL_HOTPLUG_RETRY;
542
543 return state;
544}
545
546void g4x_hdmi_init(struct drm_i915_private *dev_priv,
547 i915_reg_t hdmi_reg, enum port port)
548{
549 struct intel_digital_port *dig_port;
550 struct intel_encoder *intel_encoder;
551 struct intel_connector *intel_connector;
552
553 dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
554 if (!dig_port)
555 return;
556
557 intel_connector = intel_connector_alloc();
558 if (!intel_connector) {
559 kfree(dig_port);
560 return;
561 }
562
563 intel_encoder = &dig_port->base;
564
565 mutex_init(&dig_port->hdcp_mutex);
566
567 drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
568 &intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS,
569 "HDMI %c", port_name(port));
570
571 intel_encoder->hotplug = intel_hdmi_hotplug;
572 intel_encoder->compute_config = g4x_hdmi_compute_config;
573 if (HAS_PCH_SPLIT(dev_priv)) {
574 intel_encoder->disable = pch_disable_hdmi;
575 intel_encoder->post_disable = pch_post_disable_hdmi;
576 } else {
577 intel_encoder->disable = g4x_disable_hdmi;
578 }
579 intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
580 intel_encoder->get_config = intel_hdmi_get_config;
581 if (IS_CHERRYVIEW(dev_priv)) {
582 intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
583 intel_encoder->pre_enable = chv_hdmi_pre_enable;
584 intel_encoder->enable = vlv_enable_hdmi;
585 intel_encoder->post_disable = chv_hdmi_post_disable;
586 intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
587 } else if (IS_VALLEYVIEW(dev_priv)) {
588 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
589 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
590 intel_encoder->enable = vlv_enable_hdmi;
591 intel_encoder->post_disable = vlv_hdmi_post_disable;
592 } else {
593 intel_encoder->pre_enable = intel_hdmi_pre_enable;
594 if (HAS_PCH_CPT(dev_priv))
595 intel_encoder->enable = cpt_enable_hdmi;
596 else if (HAS_PCH_IBX(dev_priv))
597 intel_encoder->enable = ibx_enable_hdmi;
598 else
599 intel_encoder->enable = g4x_enable_hdmi;
600 }
601 intel_encoder->shutdown = intel_hdmi_encoder_shutdown;
602
603 intel_encoder->type = INTEL_OUTPUT_HDMI;
604 intel_encoder->power_domain = intel_display_power_ddi_lanes_domain(dev_priv, port);
605 intel_encoder->port = port;
606 if (IS_CHERRYVIEW(dev_priv)) {
607 if (port == PORT_D)
608 intel_encoder->pipe_mask = BIT(PIPE_C);
609 else
610 intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
611 } else {
612 intel_encoder->pipe_mask = ~0;
613 }
614 intel_encoder->cloneable = BIT(INTEL_OUTPUT_ANALOG);
615 intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
616 /*
617 * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
618 * to work on real hardware. And since g4x can send infoframes to
619 * only one port anyway, nothing is lost by allowing it.
620 */
621 if (IS_G4X(dev_priv))
622 intel_encoder->cloneable |= BIT(INTEL_OUTPUT_HDMI);
623
624 dig_port->hdmi.hdmi_reg = hdmi_reg;
625 dig_port->dp.output_reg = INVALID_MMIO_REG;
626 dig_port->max_lanes = 4;
627
628 intel_infoframe_init(dig_port);
629
630 dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
631 intel_hdmi_init_connector(dig_port, intel_connector);
632}