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/delay.h>
30 #include <linux/hdmi.h>
31 #include <linux/i2c.h>
32 #include <linux/slab.h>
34 #include <drm/drm_atomic_helper.h>
35 #include <drm/drm_crtc.h>
36 #include <drm/drm_edid.h>
37 #include <drm/drm_hdcp.h>
38 #include <drm/drm_scdc_helper.h>
39 #include <drm/intel_lpe_audio.h>
41 #include "i915_debugfs.h"
43 #include "intel_atomic.h"
44 #include "intel_connector.h"
45 #include "intel_ddi.h"
47 #include "intel_display_types.h"
49 #include "intel_gmbus.h"
50 #include "intel_hdcp.h"
51 #include "intel_hdmi.h"
52 #include "intel_lspcon.h"
53 #include "intel_panel.h"
54 #include "intel_snps_phy.h"
56 static struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi)
58 return to_i915(hdmi_to_dig_port(intel_hdmi)->base.base.dev);
62 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
64 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(intel_hdmi);
67 enabled_bits = HAS_DDI(dev_priv) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
69 drm_WARN(&dev_priv->drm,
70 intel_de_read(dev_priv, intel_hdmi->hdmi_reg) & enabled_bits,
71 "HDMI port enabled, expecting disabled\n");
75 assert_hdmi_transcoder_func_disabled(struct drm_i915_private *dev_priv,
76 enum transcoder cpu_transcoder)
78 drm_WARN(&dev_priv->drm,
79 intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder)) &
80 TRANS_DDI_FUNC_ENABLE,
81 "HDMI transcoder function enabled, expecting disabled\n");
84 static u32 g4x_infoframe_index(unsigned int type)
87 case HDMI_PACKET_TYPE_GAMUT_METADATA:
88 return VIDEO_DIP_SELECT_GAMUT;
89 case HDMI_INFOFRAME_TYPE_AVI:
90 return VIDEO_DIP_SELECT_AVI;
91 case HDMI_INFOFRAME_TYPE_SPD:
92 return VIDEO_DIP_SELECT_SPD;
93 case HDMI_INFOFRAME_TYPE_VENDOR:
94 return VIDEO_DIP_SELECT_VENDOR;
101 static u32 g4x_infoframe_enable(unsigned int type)
104 case HDMI_PACKET_TYPE_GENERAL_CONTROL:
105 return VIDEO_DIP_ENABLE_GCP;
106 case HDMI_PACKET_TYPE_GAMUT_METADATA:
107 return VIDEO_DIP_ENABLE_GAMUT;
110 case HDMI_INFOFRAME_TYPE_AVI:
111 return VIDEO_DIP_ENABLE_AVI;
112 case HDMI_INFOFRAME_TYPE_SPD:
113 return VIDEO_DIP_ENABLE_SPD;
114 case HDMI_INFOFRAME_TYPE_VENDOR:
115 return VIDEO_DIP_ENABLE_VENDOR;
116 case HDMI_INFOFRAME_TYPE_DRM:
124 static u32 hsw_infoframe_enable(unsigned int type)
127 case HDMI_PACKET_TYPE_GENERAL_CONTROL:
128 return VIDEO_DIP_ENABLE_GCP_HSW;
129 case HDMI_PACKET_TYPE_GAMUT_METADATA:
130 return VIDEO_DIP_ENABLE_GMP_HSW;
132 return VIDEO_DIP_ENABLE_VSC_HSW;
134 return VDIP_ENABLE_PPS;
135 case HDMI_INFOFRAME_TYPE_AVI:
136 return VIDEO_DIP_ENABLE_AVI_HSW;
137 case HDMI_INFOFRAME_TYPE_SPD:
138 return VIDEO_DIP_ENABLE_SPD_HSW;
139 case HDMI_INFOFRAME_TYPE_VENDOR:
140 return VIDEO_DIP_ENABLE_VS_HSW;
141 case HDMI_INFOFRAME_TYPE_DRM:
142 return VIDEO_DIP_ENABLE_DRM_GLK;
150 hsw_dip_data_reg(struct drm_i915_private *dev_priv,
151 enum transcoder cpu_transcoder,
156 case HDMI_PACKET_TYPE_GAMUT_METADATA:
157 return HSW_TVIDEO_DIP_GMP_DATA(cpu_transcoder, i);
159 return HSW_TVIDEO_DIP_VSC_DATA(cpu_transcoder, i);
161 return ICL_VIDEO_DIP_PPS_DATA(cpu_transcoder, i);
162 case HDMI_INFOFRAME_TYPE_AVI:
163 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i);
164 case HDMI_INFOFRAME_TYPE_SPD:
165 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
166 case HDMI_INFOFRAME_TYPE_VENDOR:
167 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
168 case HDMI_INFOFRAME_TYPE_DRM:
169 return GLK_TVIDEO_DIP_DRM_DATA(cpu_transcoder, i);
172 return INVALID_MMIO_REG;
176 static int hsw_dip_data_size(struct drm_i915_private *dev_priv,
181 return VIDEO_DIP_VSC_DATA_SIZE;
183 return VIDEO_DIP_PPS_DATA_SIZE;
184 case HDMI_PACKET_TYPE_GAMUT_METADATA:
185 if (DISPLAY_VER(dev_priv) >= 11)
186 return VIDEO_DIP_GMP_DATA_SIZE;
188 return VIDEO_DIP_DATA_SIZE;
190 return VIDEO_DIP_DATA_SIZE;
194 static void g4x_write_infoframe(struct intel_encoder *encoder,
195 const struct intel_crtc_state *crtc_state,
197 const void *frame, ssize_t len)
199 const u32 *data = frame;
200 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
201 u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
204 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
205 "Writing DIP with CTL reg disabled\n");
207 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
208 val |= g4x_infoframe_index(type);
210 val &= ~g4x_infoframe_enable(type);
212 intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
214 for (i = 0; i < len; i += 4) {
215 intel_de_write(dev_priv, VIDEO_DIP_DATA, *data);
218 /* Write every possible data byte to force correct ECC calculation. */
219 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
220 intel_de_write(dev_priv, VIDEO_DIP_DATA, 0);
222 val |= g4x_infoframe_enable(type);
223 val &= ~VIDEO_DIP_FREQ_MASK;
224 val |= VIDEO_DIP_FREQ_VSYNC;
226 intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
227 intel_de_posting_read(dev_priv, VIDEO_DIP_CTL);
230 static void g4x_read_infoframe(struct intel_encoder *encoder,
231 const struct intel_crtc_state *crtc_state,
233 void *frame, ssize_t len)
235 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
236 u32 val, *data = frame;
239 val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
241 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
242 val |= g4x_infoframe_index(type);
244 intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
246 for (i = 0; i < len; i += 4)
247 *data++ = intel_de_read(dev_priv, VIDEO_DIP_DATA);
250 static u32 g4x_infoframes_enabled(struct intel_encoder *encoder,
251 const struct intel_crtc_state *pipe_config)
253 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
254 u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
256 if ((val & VIDEO_DIP_ENABLE) == 0)
259 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
262 return val & (VIDEO_DIP_ENABLE_AVI |
263 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
266 static void ibx_write_infoframe(struct intel_encoder *encoder,
267 const struct intel_crtc_state *crtc_state,
269 const void *frame, ssize_t len)
271 const u32 *data = frame;
272 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
273 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
274 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
275 u32 val = intel_de_read(dev_priv, reg);
278 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
279 "Writing DIP with CTL reg disabled\n");
281 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
282 val |= g4x_infoframe_index(type);
284 val &= ~g4x_infoframe_enable(type);
286 intel_de_write(dev_priv, reg, val);
288 for (i = 0; i < len; i += 4) {
289 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe),
293 /* Write every possible data byte to force correct ECC calculation. */
294 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
295 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0);
297 val |= g4x_infoframe_enable(type);
298 val &= ~VIDEO_DIP_FREQ_MASK;
299 val |= VIDEO_DIP_FREQ_VSYNC;
301 intel_de_write(dev_priv, reg, val);
302 intel_de_posting_read(dev_priv, reg);
305 static void ibx_read_infoframe(struct intel_encoder *encoder,
306 const struct intel_crtc_state *crtc_state,
308 void *frame, ssize_t len)
310 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
311 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
312 u32 val, *data = frame;
315 val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(crtc->pipe));
317 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
318 val |= g4x_infoframe_index(type);
320 intel_de_write(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), val);
322 for (i = 0; i < len; i += 4)
323 *data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe));
326 static u32 ibx_infoframes_enabled(struct intel_encoder *encoder,
327 const struct intel_crtc_state *pipe_config)
329 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
330 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
331 i915_reg_t reg = TVIDEO_DIP_CTL(pipe);
332 u32 val = intel_de_read(dev_priv, reg);
334 if ((val & VIDEO_DIP_ENABLE) == 0)
337 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
340 return val & (VIDEO_DIP_ENABLE_AVI |
341 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
342 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
345 static void cpt_write_infoframe(struct intel_encoder *encoder,
346 const struct intel_crtc_state *crtc_state,
348 const void *frame, ssize_t len)
350 const u32 *data = frame;
351 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
352 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
353 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
354 u32 val = intel_de_read(dev_priv, reg);
357 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
358 "Writing DIP with CTL reg disabled\n");
360 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
361 val |= g4x_infoframe_index(type);
363 /* The DIP control register spec says that we need to update the AVI
364 * infoframe without clearing its enable bit */
365 if (type != HDMI_INFOFRAME_TYPE_AVI)
366 val &= ~g4x_infoframe_enable(type);
368 intel_de_write(dev_priv, reg, val);
370 for (i = 0; i < len; i += 4) {
371 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe),
375 /* Write every possible data byte to force correct ECC calculation. */
376 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
377 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0);
379 val |= g4x_infoframe_enable(type);
380 val &= ~VIDEO_DIP_FREQ_MASK;
381 val |= VIDEO_DIP_FREQ_VSYNC;
383 intel_de_write(dev_priv, reg, val);
384 intel_de_posting_read(dev_priv, reg);
387 static void cpt_read_infoframe(struct intel_encoder *encoder,
388 const struct intel_crtc_state *crtc_state,
390 void *frame, ssize_t len)
392 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
393 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
394 u32 val, *data = frame;
397 val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(crtc->pipe));
399 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
400 val |= g4x_infoframe_index(type);
402 intel_de_write(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), val);
404 for (i = 0; i < len; i += 4)
405 *data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe));
408 static u32 cpt_infoframes_enabled(struct intel_encoder *encoder,
409 const struct intel_crtc_state *pipe_config)
411 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
412 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
413 u32 val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(pipe));
415 if ((val & VIDEO_DIP_ENABLE) == 0)
418 return val & (VIDEO_DIP_ENABLE_AVI |
419 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
420 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
423 static void vlv_write_infoframe(struct intel_encoder *encoder,
424 const struct intel_crtc_state *crtc_state,
426 const void *frame, ssize_t len)
428 const u32 *data = frame;
429 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
430 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
431 i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe);
432 u32 val = intel_de_read(dev_priv, reg);
435 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
436 "Writing DIP with CTL reg disabled\n");
438 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
439 val |= g4x_infoframe_index(type);
441 val &= ~g4x_infoframe_enable(type);
443 intel_de_write(dev_priv, reg, val);
445 for (i = 0; i < len; i += 4) {
446 intel_de_write(dev_priv,
447 VLV_TVIDEO_DIP_DATA(crtc->pipe), *data);
450 /* Write every possible data byte to force correct ECC calculation. */
451 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
452 intel_de_write(dev_priv,
453 VLV_TVIDEO_DIP_DATA(crtc->pipe), 0);
455 val |= g4x_infoframe_enable(type);
456 val &= ~VIDEO_DIP_FREQ_MASK;
457 val |= VIDEO_DIP_FREQ_VSYNC;
459 intel_de_write(dev_priv, reg, val);
460 intel_de_posting_read(dev_priv, reg);
463 static void vlv_read_infoframe(struct intel_encoder *encoder,
464 const struct intel_crtc_state *crtc_state,
466 void *frame, ssize_t len)
468 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
469 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
470 u32 val, *data = frame;
473 val = intel_de_read(dev_priv, VLV_TVIDEO_DIP_CTL(crtc->pipe));
475 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
476 val |= g4x_infoframe_index(type);
478 intel_de_write(dev_priv, VLV_TVIDEO_DIP_CTL(crtc->pipe), val);
480 for (i = 0; i < len; i += 4)
481 *data++ = intel_de_read(dev_priv,
482 VLV_TVIDEO_DIP_DATA(crtc->pipe));
485 static u32 vlv_infoframes_enabled(struct intel_encoder *encoder,
486 const struct intel_crtc_state *pipe_config)
488 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
489 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
490 u32 val = intel_de_read(dev_priv, VLV_TVIDEO_DIP_CTL(pipe));
492 if ((val & VIDEO_DIP_ENABLE) == 0)
495 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
498 return val & (VIDEO_DIP_ENABLE_AVI |
499 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
500 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
503 void hsw_write_infoframe(struct intel_encoder *encoder,
504 const struct intel_crtc_state *crtc_state,
506 const void *frame, ssize_t len)
508 const u32 *data = frame;
509 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
510 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
511 i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
514 u32 val = intel_de_read(dev_priv, ctl_reg);
516 data_size = hsw_dip_data_size(dev_priv, type);
518 drm_WARN_ON(&dev_priv->drm, len > data_size);
520 val &= ~hsw_infoframe_enable(type);
521 intel_de_write(dev_priv, ctl_reg, val);
523 for (i = 0; i < len; i += 4) {
524 intel_de_write(dev_priv,
525 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2),
529 /* Write every possible data byte to force correct ECC calculation. */
530 for (; i < data_size; i += 4)
531 intel_de_write(dev_priv,
532 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2),
536 if (DISPLAY_VER(dev_priv) == 13 && crtc_state->has_psr &&
540 val |= hsw_infoframe_enable(type);
541 intel_de_write(dev_priv, ctl_reg, val);
542 intel_de_posting_read(dev_priv, ctl_reg);
545 void hsw_read_infoframe(struct intel_encoder *encoder,
546 const struct intel_crtc_state *crtc_state,
547 unsigned int type, void *frame, ssize_t len)
549 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
550 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
554 for (i = 0; i < len; i += 4)
555 *data++ = intel_de_read(dev_priv,
556 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2));
559 static u32 hsw_infoframes_enabled(struct intel_encoder *encoder,
560 const struct intel_crtc_state *pipe_config)
562 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
563 u32 val = intel_de_read(dev_priv,
564 HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder));
567 mask = (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
568 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
569 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
571 if (DISPLAY_VER(dev_priv) >= 10)
572 mask |= VIDEO_DIP_ENABLE_DRM_GLK;
577 static const u8 infoframe_type_to_idx[] = {
578 HDMI_PACKET_TYPE_GENERAL_CONTROL,
579 HDMI_PACKET_TYPE_GAMUT_METADATA,
581 HDMI_INFOFRAME_TYPE_AVI,
582 HDMI_INFOFRAME_TYPE_SPD,
583 HDMI_INFOFRAME_TYPE_VENDOR,
584 HDMI_INFOFRAME_TYPE_DRM,
587 u32 intel_hdmi_infoframe_enable(unsigned int type)
591 for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) {
592 if (infoframe_type_to_idx[i] == type)
599 u32 intel_hdmi_infoframes_enabled(struct intel_encoder *encoder,
600 const struct intel_crtc_state *crtc_state)
602 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
603 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
607 val = dig_port->infoframes_enabled(encoder, crtc_state);
609 /* map from hardware bits to dip idx */
610 for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) {
611 unsigned int type = infoframe_type_to_idx[i];
613 if (HAS_DDI(dev_priv)) {
614 if (val & hsw_infoframe_enable(type))
617 if (val & g4x_infoframe_enable(type))
626 * The data we write to the DIP data buffer registers is 1 byte bigger than the
627 * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
628 * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
629 * used for both technologies.
631 * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
632 * DW1: DB3 | DB2 | DB1 | DB0
633 * DW2: DB7 | DB6 | DB5 | DB4
636 * (HB is Header Byte, DB is Data Byte)
638 * The hdmi pack() functions don't know about that hardware specific hole so we
639 * trick them by giving an offset into the buffer and moving back the header
642 static void intel_write_infoframe(struct intel_encoder *encoder,
643 const struct intel_crtc_state *crtc_state,
644 enum hdmi_infoframe_type type,
645 const union hdmi_infoframe *frame)
647 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
648 u8 buffer[VIDEO_DIP_DATA_SIZE];
651 if ((crtc_state->infoframes.enable &
652 intel_hdmi_infoframe_enable(type)) == 0)
655 if (drm_WARN_ON(encoder->base.dev, frame->any.type != type))
658 /* see comment above for the reason for this offset */
659 len = hdmi_infoframe_pack_only(frame, buffer + 1, sizeof(buffer) - 1);
660 if (drm_WARN_ON(encoder->base.dev, len < 0))
663 /* Insert the 'hole' (see big comment above) at position 3 */
664 memmove(&buffer[0], &buffer[1], 3);
668 dig_port->write_infoframe(encoder, crtc_state, type, buffer, len);
671 void intel_read_infoframe(struct intel_encoder *encoder,
672 const struct intel_crtc_state *crtc_state,
673 enum hdmi_infoframe_type type,
674 union hdmi_infoframe *frame)
676 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
677 u8 buffer[VIDEO_DIP_DATA_SIZE];
680 if ((crtc_state->infoframes.enable &
681 intel_hdmi_infoframe_enable(type)) == 0)
684 dig_port->read_infoframe(encoder, crtc_state,
685 type, buffer, sizeof(buffer));
687 /* Fill the 'hole' (see big comment above) at position 3 */
688 memmove(&buffer[1], &buffer[0], 3);
690 /* see comment above for the reason for this offset */
691 ret = hdmi_infoframe_unpack(frame, buffer + 1, sizeof(buffer) - 1);
693 drm_dbg_kms(encoder->base.dev,
694 "Failed to unpack infoframe type 0x%02x\n", type);
698 if (frame->any.type != type)
699 drm_dbg_kms(encoder->base.dev,
700 "Found the wrong infoframe type 0x%x (expected 0x%02x)\n",
701 frame->any.type, type);
705 intel_hdmi_compute_avi_infoframe(struct intel_encoder *encoder,
706 struct intel_crtc_state *crtc_state,
707 struct drm_connector_state *conn_state)
709 struct hdmi_avi_infoframe *frame = &crtc_state->infoframes.avi.avi;
710 const struct drm_display_mode *adjusted_mode =
711 &crtc_state->hw.adjusted_mode;
712 struct drm_connector *connector = conn_state->connector;
715 if (!crtc_state->has_infoframe)
718 crtc_state->infoframes.enable |=
719 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
721 ret = drm_hdmi_avi_infoframe_from_display_mode(frame, connector,
726 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
727 frame->colorspace = HDMI_COLORSPACE_YUV420;
728 else if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
729 frame->colorspace = HDMI_COLORSPACE_YUV444;
731 frame->colorspace = HDMI_COLORSPACE_RGB;
733 drm_hdmi_avi_infoframe_colorspace(frame, conn_state);
735 /* nonsense combination */
736 drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
737 crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
739 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) {
740 drm_hdmi_avi_infoframe_quant_range(frame, connector,
742 crtc_state->limited_color_range ?
743 HDMI_QUANTIZATION_RANGE_LIMITED :
744 HDMI_QUANTIZATION_RANGE_FULL);
746 frame->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
747 frame->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
750 drm_hdmi_avi_infoframe_content_type(frame, conn_state);
752 /* TODO: handle pixel repetition for YCBCR420 outputs */
754 ret = hdmi_avi_infoframe_check(frame);
755 if (drm_WARN_ON(encoder->base.dev, ret))
762 intel_hdmi_compute_spd_infoframe(struct intel_encoder *encoder,
763 struct intel_crtc_state *crtc_state,
764 struct drm_connector_state *conn_state)
766 struct hdmi_spd_infoframe *frame = &crtc_state->infoframes.spd.spd;
769 if (!crtc_state->has_infoframe)
772 crtc_state->infoframes.enable |=
773 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD);
775 ret = hdmi_spd_infoframe_init(frame, "Intel", "Integrated gfx");
776 if (drm_WARN_ON(encoder->base.dev, ret))
779 frame->sdi = HDMI_SPD_SDI_PC;
781 ret = hdmi_spd_infoframe_check(frame);
782 if (drm_WARN_ON(encoder->base.dev, ret))
789 intel_hdmi_compute_hdmi_infoframe(struct intel_encoder *encoder,
790 struct intel_crtc_state *crtc_state,
791 struct drm_connector_state *conn_state)
793 struct hdmi_vendor_infoframe *frame =
794 &crtc_state->infoframes.hdmi.vendor.hdmi;
795 const struct drm_display_info *info =
796 &conn_state->connector->display_info;
799 if (!crtc_state->has_infoframe || !info->has_hdmi_infoframe)
802 crtc_state->infoframes.enable |=
803 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR);
805 ret = drm_hdmi_vendor_infoframe_from_display_mode(frame,
806 conn_state->connector,
807 &crtc_state->hw.adjusted_mode);
808 if (drm_WARN_ON(encoder->base.dev, ret))
811 ret = hdmi_vendor_infoframe_check(frame);
812 if (drm_WARN_ON(encoder->base.dev, ret))
819 intel_hdmi_compute_drm_infoframe(struct intel_encoder *encoder,
820 struct intel_crtc_state *crtc_state,
821 struct drm_connector_state *conn_state)
823 struct hdmi_drm_infoframe *frame = &crtc_state->infoframes.drm.drm;
824 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
827 if (DISPLAY_VER(dev_priv) < 10)
830 if (!crtc_state->has_infoframe)
833 if (!conn_state->hdr_output_metadata)
836 crtc_state->infoframes.enable |=
837 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM);
839 ret = drm_hdmi_infoframe_set_hdr_metadata(frame, conn_state);
841 drm_dbg_kms(&dev_priv->drm,
842 "couldn't set HDR metadata in infoframe\n");
846 ret = hdmi_drm_infoframe_check(frame);
847 if (drm_WARN_ON(&dev_priv->drm, ret))
853 static void g4x_set_infoframes(struct intel_encoder *encoder,
855 const struct intel_crtc_state *crtc_state,
856 const struct drm_connector_state *conn_state)
858 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
859 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
860 struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
861 i915_reg_t reg = VIDEO_DIP_CTL;
862 u32 val = intel_de_read(dev_priv, reg);
863 u32 port = VIDEO_DIP_PORT(encoder->port);
865 assert_hdmi_port_disabled(intel_hdmi);
867 /* If the registers were not initialized yet, they might be zeroes,
868 * which means we're selecting the AVI DIP and we're setting its
869 * frequency to once. This seems to really confuse the HW and make
870 * things stop working (the register spec says the AVI always needs to
871 * be sent every VSync). So here we avoid writing to the register more
872 * than we need and also explicitly select the AVI DIP and explicitly
873 * set its frequency to every VSync. Avoiding to write it twice seems to
874 * be enough to solve the problem, but being defensive shouldn't hurt us
876 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
879 if (!(val & VIDEO_DIP_ENABLE))
881 if (port != (val & VIDEO_DIP_PORT_MASK)) {
882 drm_dbg_kms(&dev_priv->drm,
883 "video DIP still enabled on port %c\n",
884 (val & VIDEO_DIP_PORT_MASK) >> 29);
887 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
888 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
889 intel_de_write(dev_priv, reg, val);
890 intel_de_posting_read(dev_priv, reg);
894 if (port != (val & VIDEO_DIP_PORT_MASK)) {
895 if (val & VIDEO_DIP_ENABLE) {
896 drm_dbg_kms(&dev_priv->drm,
897 "video DIP already enabled on port %c\n",
898 (val & VIDEO_DIP_PORT_MASK) >> 29);
901 val &= ~VIDEO_DIP_PORT_MASK;
905 val |= VIDEO_DIP_ENABLE;
906 val &= ~(VIDEO_DIP_ENABLE_AVI |
907 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
909 intel_de_write(dev_priv, reg, val);
910 intel_de_posting_read(dev_priv, reg);
912 intel_write_infoframe(encoder, crtc_state,
913 HDMI_INFOFRAME_TYPE_AVI,
914 &crtc_state->infoframes.avi);
915 intel_write_infoframe(encoder, crtc_state,
916 HDMI_INFOFRAME_TYPE_SPD,
917 &crtc_state->infoframes.spd);
918 intel_write_infoframe(encoder, crtc_state,
919 HDMI_INFOFRAME_TYPE_VENDOR,
920 &crtc_state->infoframes.hdmi);
924 * Determine if default_phase=1 can be indicated in the GCP infoframe.
926 * From HDMI specification 1.4a:
927 * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0
928 * - The first pixel following each Video Data Period shall have a pixel packing phase of 0
929 * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase
930 * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing
933 static bool gcp_default_phase_possible(int pipe_bpp,
934 const struct drm_display_mode *mode)
936 unsigned int pixels_per_group;
940 /* 4 pixels in 5 clocks */
941 pixels_per_group = 4;
944 /* 2 pixels in 3 clocks */
945 pixels_per_group = 2;
948 /* 1 pixel in 2 clocks */
949 pixels_per_group = 1;
952 /* phase information not relevant for 8bpc */
956 return mode->crtc_hdisplay % pixels_per_group == 0 &&
957 mode->crtc_htotal % pixels_per_group == 0 &&
958 mode->crtc_hblank_start % pixels_per_group == 0 &&
959 mode->crtc_hblank_end % pixels_per_group == 0 &&
960 mode->crtc_hsync_start % pixels_per_group == 0 &&
961 mode->crtc_hsync_end % pixels_per_group == 0 &&
962 ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 ||
963 mode->crtc_htotal/2 % pixels_per_group == 0);
966 static bool intel_hdmi_set_gcp_infoframe(struct intel_encoder *encoder,
967 const struct intel_crtc_state *crtc_state,
968 const struct drm_connector_state *conn_state)
970 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
971 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
974 if ((crtc_state->infoframes.enable &
975 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0)
978 if (HAS_DDI(dev_priv))
979 reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder);
980 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
981 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
982 else if (HAS_PCH_SPLIT(dev_priv))
983 reg = TVIDEO_DIP_GCP(crtc->pipe);
987 intel_de_write(dev_priv, reg, crtc_state->infoframes.gcp);
992 void intel_hdmi_read_gcp_infoframe(struct intel_encoder *encoder,
993 struct intel_crtc_state *crtc_state)
995 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
996 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
999 if ((crtc_state->infoframes.enable &
1000 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0)
1003 if (HAS_DDI(dev_priv))
1004 reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder);
1005 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
1006 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
1007 else if (HAS_PCH_SPLIT(dev_priv))
1008 reg = TVIDEO_DIP_GCP(crtc->pipe);
1012 crtc_state->infoframes.gcp = intel_de_read(dev_priv, reg);
1015 static void intel_hdmi_compute_gcp_infoframe(struct intel_encoder *encoder,
1016 struct intel_crtc_state *crtc_state,
1017 struct drm_connector_state *conn_state)
1019 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1021 if (IS_G4X(dev_priv) || !crtc_state->has_infoframe)
1024 crtc_state->infoframes.enable |=
1025 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL);
1027 /* Indicate color indication for deep color mode */
1028 if (crtc_state->pipe_bpp > 24)
1029 crtc_state->infoframes.gcp |= GCP_COLOR_INDICATION;
1031 /* Enable default_phase whenever the display mode is suitably aligned */
1032 if (gcp_default_phase_possible(crtc_state->pipe_bpp,
1033 &crtc_state->hw.adjusted_mode))
1034 crtc_state->infoframes.gcp |= GCP_DEFAULT_PHASE_ENABLE;
1037 static void ibx_set_infoframes(struct intel_encoder *encoder,
1039 const struct intel_crtc_state *crtc_state,
1040 const struct drm_connector_state *conn_state)
1042 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1043 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
1044 struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
1045 struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
1046 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
1047 u32 val = intel_de_read(dev_priv, reg);
1048 u32 port = VIDEO_DIP_PORT(encoder->port);
1050 assert_hdmi_port_disabled(intel_hdmi);
1052 /* See the big comment in g4x_set_infoframes() */
1053 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
1056 if (!(val & VIDEO_DIP_ENABLE))
1058 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
1059 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1060 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1061 intel_de_write(dev_priv, reg, val);
1062 intel_de_posting_read(dev_priv, reg);
1066 if (port != (val & VIDEO_DIP_PORT_MASK)) {
1067 drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE,
1068 "DIP already enabled on port %c\n",
1069 (val & VIDEO_DIP_PORT_MASK) >> 29);
1070 val &= ~VIDEO_DIP_PORT_MASK;
1074 val |= VIDEO_DIP_ENABLE;
1075 val &= ~(VIDEO_DIP_ENABLE_AVI |
1076 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1077 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1079 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
1080 val |= VIDEO_DIP_ENABLE_GCP;
1082 intel_de_write(dev_priv, reg, val);
1083 intel_de_posting_read(dev_priv, reg);
1085 intel_write_infoframe(encoder, crtc_state,
1086 HDMI_INFOFRAME_TYPE_AVI,
1087 &crtc_state->infoframes.avi);
1088 intel_write_infoframe(encoder, crtc_state,
1089 HDMI_INFOFRAME_TYPE_SPD,
1090 &crtc_state->infoframes.spd);
1091 intel_write_infoframe(encoder, crtc_state,
1092 HDMI_INFOFRAME_TYPE_VENDOR,
1093 &crtc_state->infoframes.hdmi);
1096 static void cpt_set_infoframes(struct intel_encoder *encoder,
1098 const struct intel_crtc_state *crtc_state,
1099 const struct drm_connector_state *conn_state)
1101 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1102 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
1103 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
1104 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
1105 u32 val = intel_de_read(dev_priv, reg);
1107 assert_hdmi_port_disabled(intel_hdmi);
1109 /* See the big comment in g4x_set_infoframes() */
1110 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
1113 if (!(val & VIDEO_DIP_ENABLE))
1115 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
1116 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1117 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1118 intel_de_write(dev_priv, reg, val);
1119 intel_de_posting_read(dev_priv, reg);
1123 /* Set both together, unset both together: see the spec. */
1124 val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
1125 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1126 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1128 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
1129 val |= VIDEO_DIP_ENABLE_GCP;
1131 intel_de_write(dev_priv, reg, val);
1132 intel_de_posting_read(dev_priv, reg);
1134 intel_write_infoframe(encoder, crtc_state,
1135 HDMI_INFOFRAME_TYPE_AVI,
1136 &crtc_state->infoframes.avi);
1137 intel_write_infoframe(encoder, crtc_state,
1138 HDMI_INFOFRAME_TYPE_SPD,
1139 &crtc_state->infoframes.spd);
1140 intel_write_infoframe(encoder, crtc_state,
1141 HDMI_INFOFRAME_TYPE_VENDOR,
1142 &crtc_state->infoframes.hdmi);
1145 static void vlv_set_infoframes(struct intel_encoder *encoder,
1147 const struct intel_crtc_state *crtc_state,
1148 const struct drm_connector_state *conn_state)
1150 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1151 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
1152 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
1153 i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe);
1154 u32 val = intel_de_read(dev_priv, reg);
1155 u32 port = VIDEO_DIP_PORT(encoder->port);
1157 assert_hdmi_port_disabled(intel_hdmi);
1159 /* See the big comment in g4x_set_infoframes() */
1160 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
1163 if (!(val & VIDEO_DIP_ENABLE))
1165 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
1166 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1167 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1168 intel_de_write(dev_priv, reg, val);
1169 intel_de_posting_read(dev_priv, reg);
1173 if (port != (val & VIDEO_DIP_PORT_MASK)) {
1174 drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE,
1175 "DIP already enabled on port %c\n",
1176 (val & VIDEO_DIP_PORT_MASK) >> 29);
1177 val &= ~VIDEO_DIP_PORT_MASK;
1181 val |= VIDEO_DIP_ENABLE;
1182 val &= ~(VIDEO_DIP_ENABLE_AVI |
1183 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
1184 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
1186 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
1187 val |= VIDEO_DIP_ENABLE_GCP;
1189 intel_de_write(dev_priv, reg, val);
1190 intel_de_posting_read(dev_priv, reg);
1192 intel_write_infoframe(encoder, crtc_state,
1193 HDMI_INFOFRAME_TYPE_AVI,
1194 &crtc_state->infoframes.avi);
1195 intel_write_infoframe(encoder, crtc_state,
1196 HDMI_INFOFRAME_TYPE_SPD,
1197 &crtc_state->infoframes.spd);
1198 intel_write_infoframe(encoder, crtc_state,
1199 HDMI_INFOFRAME_TYPE_VENDOR,
1200 &crtc_state->infoframes.hdmi);
1203 static void hsw_set_infoframes(struct intel_encoder *encoder,
1205 const struct intel_crtc_state *crtc_state,
1206 const struct drm_connector_state *conn_state)
1208 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1209 i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder);
1210 u32 val = intel_de_read(dev_priv, reg);
1212 assert_hdmi_transcoder_func_disabled(dev_priv,
1213 crtc_state->cpu_transcoder);
1215 val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
1216 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
1217 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW |
1218 VIDEO_DIP_ENABLE_DRM_GLK);
1221 intel_de_write(dev_priv, reg, val);
1222 intel_de_posting_read(dev_priv, reg);
1226 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
1227 val |= VIDEO_DIP_ENABLE_GCP_HSW;
1229 intel_de_write(dev_priv, reg, val);
1230 intel_de_posting_read(dev_priv, reg);
1232 intel_write_infoframe(encoder, crtc_state,
1233 HDMI_INFOFRAME_TYPE_AVI,
1234 &crtc_state->infoframes.avi);
1235 intel_write_infoframe(encoder, crtc_state,
1236 HDMI_INFOFRAME_TYPE_SPD,
1237 &crtc_state->infoframes.spd);
1238 intel_write_infoframe(encoder, crtc_state,
1239 HDMI_INFOFRAME_TYPE_VENDOR,
1240 &crtc_state->infoframes.hdmi);
1241 intel_write_infoframe(encoder, crtc_state,
1242 HDMI_INFOFRAME_TYPE_DRM,
1243 &crtc_state->infoframes.drm);
1246 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
1248 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
1249 struct i2c_adapter *adapter;
1251 if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI)
1254 adapter = intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
1256 drm_dbg_kms(&dev_priv->drm, "%s DP dual mode adaptor TMDS output\n",
1257 enable ? "Enabling" : "Disabling");
1259 drm_dp_dual_mode_set_tmds_output(&dev_priv->drm, hdmi->dp_dual_mode.type, adapter, enable);
1262 static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
1263 unsigned int offset, void *buffer, size_t size)
1265 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1266 struct intel_hdmi *hdmi = &dig_port->hdmi;
1267 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
1270 u8 start = offset & 0xff;
1271 struct i2c_msg msgs[] = {
1273 .addr = DRM_HDCP_DDC_ADDR,
1279 .addr = DRM_HDCP_DDC_ADDR,
1285 ret = i2c_transfer(adapter, msgs, ARRAY_SIZE(msgs));
1286 if (ret == ARRAY_SIZE(msgs))
1288 return ret >= 0 ? -EIO : ret;
1291 static int intel_hdmi_hdcp_write(struct intel_digital_port *dig_port,
1292 unsigned int offset, void *buffer, size_t size)
1294 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1295 struct intel_hdmi *hdmi = &dig_port->hdmi;
1296 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
1302 write_buf = kzalloc(size + 1, GFP_KERNEL);
1306 write_buf[0] = offset & 0xff;
1307 memcpy(&write_buf[1], buffer, size);
1309 msg.addr = DRM_HDCP_DDC_ADDR;
1312 msg.buf = write_buf;
1314 ret = i2c_transfer(adapter, &msg, 1);
1325 int intel_hdmi_hdcp_write_an_aksv(struct intel_digital_port *dig_port,
1328 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1329 struct intel_hdmi *hdmi = &dig_port->hdmi;
1330 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
1334 ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, an,
1337 drm_dbg_kms(&i915->drm, "Write An over DDC failed (%d)\n",
1342 ret = intel_gmbus_output_aksv(adapter);
1344 drm_dbg_kms(&i915->drm, "Failed to output aksv (%d)\n", ret);
1350 static int intel_hdmi_hdcp_read_bksv(struct intel_digital_port *dig_port,
1353 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1356 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BKSV, bksv,
1359 drm_dbg_kms(&i915->drm, "Read Bksv over DDC failed (%d)\n",
1365 int intel_hdmi_hdcp_read_bstatus(struct intel_digital_port *dig_port,
1368 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1371 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BSTATUS,
1372 bstatus, DRM_HDCP_BSTATUS_LEN);
1374 drm_dbg_kms(&i915->drm, "Read bstatus over DDC failed (%d)\n",
1380 int intel_hdmi_hdcp_repeater_present(struct intel_digital_port *dig_port,
1381 bool *repeater_present)
1383 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1387 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1);
1389 drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n",
1393 *repeater_present = val & DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT;
1398 int intel_hdmi_hdcp_read_ri_prime(struct intel_digital_port *dig_port,
1401 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1404 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_RI_PRIME,
1405 ri_prime, DRM_HDCP_RI_LEN);
1407 drm_dbg_kms(&i915->drm, "Read Ri' over DDC failed (%d)\n",
1413 int intel_hdmi_hdcp_read_ksv_ready(struct intel_digital_port *dig_port,
1416 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1420 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1);
1422 drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n",
1426 *ksv_ready = val & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY;
1431 int intel_hdmi_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port,
1432 int num_downstream, u8 *ksv_fifo)
1434 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1436 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_KSV_FIFO,
1437 ksv_fifo, num_downstream * DRM_HDCP_KSV_LEN);
1439 drm_dbg_kms(&i915->drm,
1440 "Read ksv fifo over DDC failed (%d)\n", ret);
1447 int intel_hdmi_hdcp_read_v_prime_part(struct intel_digital_port *dig_port,
1450 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1453 if (i >= DRM_HDCP_V_PRIME_NUM_PARTS)
1456 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_V_PRIME(i),
1457 part, DRM_HDCP_V_PRIME_PART_LEN);
1459 drm_dbg_kms(&i915->drm, "Read V'[%d] over DDC failed (%d)\n",
1464 static int kbl_repositioning_enc_en_signal(struct intel_connector *connector,
1465 enum transcoder cpu_transcoder)
1467 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
1468 struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
1469 struct intel_crtc *crtc = to_intel_crtc(connector->base.state->crtc);
1474 scanline = intel_de_read(dev_priv, PIPEDSL(crtc->pipe));
1475 if (scanline > 100 && scanline < 200)
1477 usleep_range(25, 50);
1480 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder,
1481 false, TRANS_DDI_HDCP_SIGNALLING);
1483 drm_err(&dev_priv->drm,
1484 "Disable HDCP signalling failed (%d)\n", ret);
1488 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder,
1489 true, TRANS_DDI_HDCP_SIGNALLING);
1491 drm_err(&dev_priv->drm,
1492 "Enable HDCP signalling failed (%d)\n", ret);
1500 int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *dig_port,
1501 enum transcoder cpu_transcoder,
1504 struct intel_hdmi *hdmi = &dig_port->hdmi;
1505 struct intel_connector *connector = hdmi->attached_connector;
1506 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
1510 usleep_range(6, 60); /* Bspec says >= 6us */
1512 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base,
1513 cpu_transcoder, enable,
1514 TRANS_DDI_HDCP_SIGNALLING);
1516 drm_err(&dev_priv->drm, "%s HDCP signalling failed (%d)\n",
1517 enable ? "Enable" : "Disable", ret);
1522 * WA: To fix incorrect positioning of the window of
1523 * opportunity and enc_en signalling in KABYLAKE.
1525 if (IS_KABYLAKE(dev_priv) && enable)
1526 return kbl_repositioning_enc_en_signal(connector,
1533 bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port *dig_port,
1534 struct intel_connector *connector)
1536 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1537 enum port port = dig_port->base.port;
1538 enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
1542 u8 shim[DRM_HDCP_RI_LEN];
1545 ret = intel_hdmi_hdcp_read_ri_prime(dig_port, ri.shim);
1549 intel_de_write(i915, HDCP_RPRIME(i915, cpu_transcoder, port), ri.reg);
1551 /* Wait for Ri prime match */
1552 if (wait_for((intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) &
1553 (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC)) ==
1554 (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) {
1555 drm_dbg_kms(&i915->drm, "Ri' mismatch detected (%x)\n",
1556 intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder,
1564 bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port,
1565 struct intel_connector *connector)
1567 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1570 for (retry = 0; retry < 3; retry++)
1571 if (intel_hdmi_hdcp_check_link_once(dig_port, connector))
1574 drm_err(&i915->drm, "Link check failed\n");
1578 struct hdcp2_hdmi_msg_timeout {
1583 static const struct hdcp2_hdmi_msg_timeout hdcp2_msg_timeout[] = {
1584 { HDCP_2_2_AKE_SEND_CERT, HDCP_2_2_CERT_TIMEOUT_MS, },
1585 { HDCP_2_2_AKE_SEND_PAIRING_INFO, HDCP_2_2_PAIRING_TIMEOUT_MS, },
1586 { HDCP_2_2_LC_SEND_LPRIME, HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS, },
1587 { HDCP_2_2_REP_SEND_RECVID_LIST, HDCP_2_2_RECVID_LIST_TIMEOUT_MS, },
1588 { HDCP_2_2_REP_STREAM_READY, HDCP_2_2_STREAM_READY_TIMEOUT_MS, },
1592 int intel_hdmi_hdcp2_read_rx_status(struct intel_digital_port *dig_port,
1595 return intel_hdmi_hdcp_read(dig_port,
1596 HDCP_2_2_HDMI_REG_RXSTATUS_OFFSET,
1598 HDCP_2_2_HDMI_RXSTATUS_LEN);
1601 static int get_hdcp2_msg_timeout(u8 msg_id, bool is_paired)
1605 if (msg_id == HDCP_2_2_AKE_SEND_HPRIME) {
1607 return HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS;
1609 return HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS;
1612 for (i = 0; i < ARRAY_SIZE(hdcp2_msg_timeout); i++) {
1613 if (hdcp2_msg_timeout[i].msg_id == msg_id)
1614 return hdcp2_msg_timeout[i].timeout;
1621 hdcp2_detect_msg_availability(struct intel_digital_port *dig_port,
1622 u8 msg_id, bool *msg_ready,
1625 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1626 u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN];
1629 ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status);
1631 drm_dbg_kms(&i915->drm, "rx_status read failed. Err %d\n",
1636 *msg_sz = ((HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(rx_status[1]) << 8) |
1639 if (msg_id == HDCP_2_2_REP_SEND_RECVID_LIST)
1640 *msg_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1]) &&
1643 *msg_ready = *msg_sz;
1649 intel_hdmi_hdcp2_wait_for_msg(struct intel_digital_port *dig_port,
1650 u8 msg_id, bool paired)
1652 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1653 bool msg_ready = false;
1657 timeout = get_hdcp2_msg_timeout(msg_id, paired);
1661 ret = __wait_for(ret = hdcp2_detect_msg_availability(dig_port,
1664 !ret && msg_ready && msg_sz, timeout * 1000,
1667 drm_dbg_kms(&i915->drm, "msg_id: %d, ret: %d, timeout: %d\n",
1668 msg_id, ret, timeout);
1670 return ret ? ret : msg_sz;
1674 int intel_hdmi_hdcp2_write_msg(struct intel_digital_port *dig_port,
1675 void *buf, size_t size)
1677 unsigned int offset;
1679 offset = HDCP_2_2_HDMI_REG_WR_MSG_OFFSET;
1680 return intel_hdmi_hdcp_write(dig_port, offset, buf, size);
1684 int intel_hdmi_hdcp2_read_msg(struct intel_digital_port *dig_port,
1685 u8 msg_id, void *buf, size_t size)
1687 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
1688 struct intel_hdmi *hdmi = &dig_port->hdmi;
1689 struct intel_hdcp *hdcp = &hdmi->attached_connector->hdcp;
1690 unsigned int offset;
1693 ret = intel_hdmi_hdcp2_wait_for_msg(dig_port, msg_id,
1699 * Available msg size should be equal to or lesser than the
1703 drm_dbg_kms(&i915->drm,
1704 "msg_sz(%zd) is more than exp size(%zu)\n",
1709 offset = HDCP_2_2_HDMI_REG_RD_MSG_OFFSET;
1710 ret = intel_hdmi_hdcp_read(dig_port, offset, buf, ret);
1712 drm_dbg_kms(&i915->drm, "Failed to read msg_id: %d(%zd)\n",
1719 int intel_hdmi_hdcp2_check_link(struct intel_digital_port *dig_port,
1720 struct intel_connector *connector)
1722 u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN];
1725 ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status);
1730 * Re-auth request and Link Integrity Failures are represented by
1731 * same bit. i.e reauth_req.
1733 if (HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(rx_status[1]))
1734 ret = HDCP_REAUTH_REQUEST;
1735 else if (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1]))
1736 ret = HDCP_TOPOLOGY_CHANGE;
1742 int intel_hdmi_hdcp2_capable(struct intel_digital_port *dig_port,
1749 ret = intel_hdmi_hdcp_read(dig_port, HDCP_2_2_HDMI_REG_VER_OFFSET,
1750 &hdcp2_version, sizeof(hdcp2_version));
1751 if (!ret && hdcp2_version & HDCP_2_2_HDMI_SUPPORT_MASK)
1757 static const struct intel_hdcp_shim intel_hdmi_hdcp_shim = {
1758 .write_an_aksv = intel_hdmi_hdcp_write_an_aksv,
1759 .read_bksv = intel_hdmi_hdcp_read_bksv,
1760 .read_bstatus = intel_hdmi_hdcp_read_bstatus,
1761 .repeater_present = intel_hdmi_hdcp_repeater_present,
1762 .read_ri_prime = intel_hdmi_hdcp_read_ri_prime,
1763 .read_ksv_ready = intel_hdmi_hdcp_read_ksv_ready,
1764 .read_ksv_fifo = intel_hdmi_hdcp_read_ksv_fifo,
1765 .read_v_prime_part = intel_hdmi_hdcp_read_v_prime_part,
1766 .toggle_signalling = intel_hdmi_hdcp_toggle_signalling,
1767 .check_link = intel_hdmi_hdcp_check_link,
1768 .write_2_2_msg = intel_hdmi_hdcp2_write_msg,
1769 .read_2_2_msg = intel_hdmi_hdcp2_read_msg,
1770 .check_2_2_link = intel_hdmi_hdcp2_check_link,
1771 .hdcp_2_2_capable = intel_hdmi_hdcp2_capable,
1772 .protocol = HDCP_PROTOCOL_HDMI,
1775 static int intel_hdmi_source_max_tmds_clock(struct intel_encoder *encoder)
1777 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1778 int max_tmds_clock, vbt_max_tmds_clock;
1780 if (DISPLAY_VER(dev_priv) >= 10)
1781 max_tmds_clock = 594000;
1782 else if (DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv))
1783 max_tmds_clock = 300000;
1784 else if (DISPLAY_VER(dev_priv) >= 5)
1785 max_tmds_clock = 225000;
1787 max_tmds_clock = 165000;
1789 vbt_max_tmds_clock = intel_bios_max_tmds_clock(encoder);
1790 if (vbt_max_tmds_clock)
1791 max_tmds_clock = min(max_tmds_clock, vbt_max_tmds_clock);
1793 return max_tmds_clock;
1796 static bool intel_has_hdmi_sink(struct intel_hdmi *hdmi,
1797 const struct drm_connector_state *conn_state)
1799 return hdmi->has_hdmi_sink &&
1800 READ_ONCE(to_intel_digital_connector_state(conn_state)->force_audio) != HDMI_AUDIO_OFF_DVI;
1803 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi,
1804 bool respect_downstream_limits,
1807 struct intel_encoder *encoder = &hdmi_to_dig_port(hdmi)->base;
1808 int max_tmds_clock = intel_hdmi_source_max_tmds_clock(encoder);
1810 if (respect_downstream_limits) {
1811 struct intel_connector *connector = hdmi->attached_connector;
1812 const struct drm_display_info *info = &connector->base.display_info;
1814 if (hdmi->dp_dual_mode.max_tmds_clock)
1815 max_tmds_clock = min(max_tmds_clock,
1816 hdmi->dp_dual_mode.max_tmds_clock);
1818 if (info->max_tmds_clock)
1819 max_tmds_clock = min(max_tmds_clock,
1820 info->max_tmds_clock);
1821 else if (!has_hdmi_sink)
1822 max_tmds_clock = min(max_tmds_clock, 165000);
1825 return max_tmds_clock;
1828 static enum drm_mode_status
1829 hdmi_port_clock_valid(struct intel_hdmi *hdmi,
1830 int clock, bool respect_downstream_limits,
1833 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
1834 enum phy phy = intel_port_to_phy(dev_priv, hdmi_to_dig_port(hdmi)->base.port);
1837 return MODE_CLOCK_LOW;
1838 if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits,
1840 return MODE_CLOCK_HIGH;
1842 /* GLK DPLL can't generate 446-480 MHz */
1843 if (IS_GEMINILAKE(dev_priv) && clock > 446666 && clock < 480000)
1844 return MODE_CLOCK_RANGE;
1846 /* BXT/GLK DPLL can't generate 223-240 MHz */
1847 if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
1848 clock > 223333 && clock < 240000)
1849 return MODE_CLOCK_RANGE;
1851 /* CHV DPLL can't generate 216-240 MHz */
1852 if (IS_CHERRYVIEW(dev_priv) && clock > 216000 && clock < 240000)
1853 return MODE_CLOCK_RANGE;
1855 /* ICL+ combo PHY PLL can't generate 500-533.2 MHz */
1856 if (intel_phy_is_combo(dev_priv, phy) && clock > 500000 && clock < 533200)
1857 return MODE_CLOCK_RANGE;
1859 /* ICL+ TC PHY PLL can't generate 500-532.8 MHz */
1860 if (intel_phy_is_tc(dev_priv, phy) && clock > 500000 && clock < 532800)
1861 return MODE_CLOCK_RANGE;
1864 * SNPS PHYs' MPLLB table-based programming can only handle a fixed
1865 * set of link rates.
1867 * FIXME: We will hopefully get an algorithmic way of programming
1868 * the MPLLB for HDMI in the future.
1870 if (IS_DG2(dev_priv))
1871 return intel_snps_phy_check_hdmi_link_rate(clock);
1876 static int intel_hdmi_port_clock(int clock, int bpc)
1879 * Need to adjust the port link by:
1883 return clock * bpc / 8;
1886 static bool intel_hdmi_bpc_possible(struct drm_connector *connector,
1887 int bpc, bool has_hdmi_sink, bool ycbcr420_output)
1889 struct drm_i915_private *i915 = to_i915(connector->dev);
1890 const struct drm_display_info *info = &connector->display_info;
1891 const struct drm_hdmi_info *hdmi = &info->hdmi;
1901 if (ycbcr420_output)
1902 return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_36;
1904 return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36;
1906 if (DISPLAY_VER(i915) < 11)
1912 if (ycbcr420_output)
1913 return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_30;
1915 return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30;
1924 static enum drm_mode_status
1925 intel_hdmi_mode_clock_valid(struct drm_connector *connector, int clock,
1926 bool has_hdmi_sink, bool ycbcr420_output)
1928 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
1929 enum drm_mode_status status;
1931 if (ycbcr420_output)
1934 /* check if we can do 8bpc */
1935 status = hdmi_port_clock_valid(hdmi, intel_hdmi_port_clock(clock, 8),
1936 true, has_hdmi_sink);
1938 /* if we can't do 8bpc we may still be able to do 12bpc */
1939 if (status != MODE_OK &&
1940 intel_hdmi_bpc_possible(connector, 12, has_hdmi_sink, ycbcr420_output))
1941 status = hdmi_port_clock_valid(hdmi, intel_hdmi_port_clock(clock, 12),
1942 true, has_hdmi_sink);
1944 /* if we can't do 8,12bpc we may still be able to do 10bpc */
1945 if (status != MODE_OK &&
1946 intel_hdmi_bpc_possible(connector, 10, has_hdmi_sink, ycbcr420_output))
1947 status = hdmi_port_clock_valid(hdmi, intel_hdmi_port_clock(clock, 10),
1948 true, has_hdmi_sink);
1953 static enum drm_mode_status
1954 intel_hdmi_mode_valid(struct drm_connector *connector,
1955 struct drm_display_mode *mode)
1957 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
1958 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
1959 enum drm_mode_status status;
1960 int clock = mode->clock;
1961 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
1962 bool has_hdmi_sink = intel_has_hdmi_sink(hdmi, connector->state);
1963 bool ycbcr_420_only;
1965 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1966 return MODE_NO_DBLESCAN;
1968 if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1971 if (clock > max_dotclk)
1972 return MODE_CLOCK_HIGH;
1974 if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
1976 return MODE_CLOCK_LOW;
1980 ycbcr_420_only = drm_mode_is_420_only(&connector->display_info, mode);
1982 status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, ycbcr_420_only);
1983 if (status != MODE_OK) {
1984 if (ycbcr_420_only ||
1985 !connector->ycbcr_420_allowed ||
1986 !drm_mode_is_420_also(&connector->display_info, mode))
1989 status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, true);
1990 if (status != MODE_OK)
1994 return intel_mode_valid_max_plane_size(dev_priv, mode, false);
1997 bool intel_hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state,
1998 int bpc, bool has_hdmi_sink, bool ycbcr420_output)
2000 struct drm_atomic_state *state = crtc_state->uapi.state;
2001 struct drm_connector_state *connector_state;
2002 struct drm_connector *connector;
2005 if (crtc_state->pipe_bpp < bpc * 3)
2008 for_each_new_connector_in_state(state, connector, connector_state, i) {
2009 if (connector_state->crtc != crtc_state->uapi.crtc)
2012 if (!intel_hdmi_bpc_possible(connector, bpc, has_hdmi_sink, ycbcr420_output))
2019 static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state,
2022 struct drm_i915_private *dev_priv =
2023 to_i915(crtc_state->uapi.crtc->dev);
2024 const struct drm_display_mode *adjusted_mode =
2025 &crtc_state->hw.adjusted_mode;
2028 * HDMI deep color affects the clocks, so it's only possible
2029 * when not cloning with other encoder types.
2031 if (crtc_state->output_types != BIT(INTEL_OUTPUT_HDMI))
2034 /* Display Wa_1405510057:icl,ehl */
2035 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 &&
2036 bpc == 10 && DISPLAY_VER(dev_priv) == 11 &&
2037 (adjusted_mode->crtc_hblank_end -
2038 adjusted_mode->crtc_hblank_start) % 8 == 2)
2041 return intel_hdmi_deep_color_possible(crtc_state, bpc,
2042 crtc_state->has_hdmi_sink,
2043 crtc_state->output_format ==
2044 INTEL_OUTPUT_FORMAT_YCBCR420);
2047 static int intel_hdmi_compute_bpc(struct intel_encoder *encoder,
2048 struct intel_crtc_state *crtc_state,
2051 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2054 for (bpc = 12; bpc >= 10; bpc -= 2) {
2055 if (hdmi_deep_color_possible(crtc_state, bpc) &&
2056 hdmi_port_clock_valid(intel_hdmi,
2057 intel_hdmi_port_clock(clock, bpc),
2058 true, crtc_state->has_hdmi_sink) == MODE_OK)
2065 static int intel_hdmi_compute_clock(struct intel_encoder *encoder,
2066 struct intel_crtc_state *crtc_state)
2068 struct drm_i915_private *i915 = to_i915(encoder->base.dev);
2069 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2070 const struct drm_display_mode *adjusted_mode =
2071 &crtc_state->hw.adjusted_mode;
2072 int bpc, clock = adjusted_mode->crtc_clock;
2074 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
2077 /* YCBCR420 TMDS rate requirement is half the pixel clock */
2078 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
2081 bpc = intel_hdmi_compute_bpc(encoder, crtc_state, clock);
2083 crtc_state->port_clock = intel_hdmi_port_clock(clock, bpc);
2086 * pipe_bpp could already be below 8bpc due to
2087 * FDI bandwidth constraints. We shouldn't bump it
2088 * back up to 8bpc in that case.
2090 if (crtc_state->pipe_bpp > bpc * 3)
2091 crtc_state->pipe_bpp = bpc * 3;
2093 drm_dbg_kms(&i915->drm,
2094 "picking %d bpc for HDMI output (pipe bpp: %d)\n",
2095 bpc, crtc_state->pipe_bpp);
2097 if (hdmi_port_clock_valid(intel_hdmi, crtc_state->port_clock,
2098 false, crtc_state->has_hdmi_sink) != MODE_OK) {
2099 drm_dbg_kms(&i915->drm,
2100 "unsupported HDMI clock (%d kHz), rejecting mode\n",
2101 crtc_state->port_clock);
2108 bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state,
2109 const struct drm_connector_state *conn_state)
2111 const struct intel_digital_connector_state *intel_conn_state =
2112 to_intel_digital_connector_state(conn_state);
2113 const struct drm_display_mode *adjusted_mode =
2114 &crtc_state->hw.adjusted_mode;
2117 * Our YCbCr output is always limited range.
2118 * crtc_state->limited_color_range only applies to RGB,
2119 * and it must never be set for YCbCr or we risk setting
2120 * some conflicting bits in PIPECONF which will mess up
2121 * the colors on the monitor.
2123 if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
2126 if (intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_AUTO) {
2127 /* See CEA-861-E - 5.1 Default Encoding Parameters */
2128 return crtc_state->has_hdmi_sink &&
2129 drm_default_rgb_quant_range(adjusted_mode) ==
2130 HDMI_QUANTIZATION_RANGE_LIMITED;
2132 return intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_LIMITED;
2136 static bool intel_hdmi_has_audio(struct intel_encoder *encoder,
2137 const struct intel_crtc_state *crtc_state,
2138 const struct drm_connector_state *conn_state)
2140 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2141 const struct intel_digital_connector_state *intel_conn_state =
2142 to_intel_digital_connector_state(conn_state);
2144 if (!crtc_state->has_hdmi_sink)
2147 if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
2148 return intel_hdmi->has_audio;
2150 return intel_conn_state->force_audio == HDMI_AUDIO_ON;
2153 static int intel_hdmi_compute_output_format(struct intel_encoder *encoder,
2154 struct intel_crtc_state *crtc_state,
2155 const struct drm_connector_state *conn_state)
2157 struct drm_connector *connector = conn_state->connector;
2158 struct drm_i915_private *i915 = to_i915(connector->dev);
2159 const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
2161 bool ycbcr_420_only;
2163 ycbcr_420_only = drm_mode_is_420_only(&connector->display_info, adjusted_mode);
2164 if (connector->ycbcr_420_allowed && ycbcr_420_only) {
2165 crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
2167 if (!connector->ycbcr_420_allowed && ycbcr_420_only)
2168 drm_dbg_kms(&i915->drm,
2169 "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not possible. Falling back to RGB.\n");
2170 crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
2173 ret = intel_hdmi_compute_clock(encoder, crtc_state);
2175 if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_YCBCR420 &&
2176 connector->ycbcr_420_allowed &&
2177 drm_mode_is_420_also(&connector->display_info, adjusted_mode)) {
2178 crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
2179 ret = intel_hdmi_compute_clock(encoder, crtc_state);
2186 int intel_hdmi_compute_config(struct intel_encoder *encoder,
2187 struct intel_crtc_state *pipe_config,
2188 struct drm_connector_state *conn_state)
2190 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2191 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2192 struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
2193 struct drm_connector *connector = conn_state->connector;
2194 struct drm_scdc *scdc = &connector->display_info.hdmi.scdc;
2197 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
2200 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
2201 pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_hdmi,
2204 if (pipe_config->has_hdmi_sink)
2205 pipe_config->has_infoframe = true;
2207 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
2208 pipe_config->pixel_multiplier = 2;
2210 if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv))
2211 pipe_config->has_pch_encoder = true;
2213 pipe_config->has_audio =
2214 intel_hdmi_has_audio(encoder, pipe_config, conn_state);
2216 ret = intel_hdmi_compute_output_format(encoder, pipe_config, conn_state);
2220 if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
2221 ret = intel_pch_panel_fitting(pipe_config, conn_state);
2226 pipe_config->limited_color_range =
2227 intel_hdmi_limited_color_range(pipe_config, conn_state);
2229 if (conn_state->picture_aspect_ratio)
2230 adjusted_mode->picture_aspect_ratio =
2231 conn_state->picture_aspect_ratio;
2233 pipe_config->lane_count = 4;
2235 if (scdc->scrambling.supported && DISPLAY_VER(dev_priv) >= 10) {
2236 if (scdc->scrambling.low_rates)
2237 pipe_config->hdmi_scrambling = true;
2239 if (pipe_config->port_clock > 340000) {
2240 pipe_config->hdmi_scrambling = true;
2241 pipe_config->hdmi_high_tmds_clock_ratio = true;
2245 intel_hdmi_compute_gcp_infoframe(encoder, pipe_config,
2248 if (!intel_hdmi_compute_avi_infoframe(encoder, pipe_config, conn_state)) {
2249 drm_dbg_kms(&dev_priv->drm, "bad AVI infoframe\n");
2253 if (!intel_hdmi_compute_spd_infoframe(encoder, pipe_config, conn_state)) {
2254 drm_dbg_kms(&dev_priv->drm, "bad SPD infoframe\n");
2258 if (!intel_hdmi_compute_hdmi_infoframe(encoder, pipe_config, conn_state)) {
2259 drm_dbg_kms(&dev_priv->drm, "bad HDMI infoframe\n");
2263 if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config, conn_state)) {
2264 drm_dbg_kms(&dev_priv->drm, "bad DRM infoframe\n");
2271 void intel_hdmi_encoder_shutdown(struct intel_encoder *encoder)
2273 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2276 * Give a hand to buggy BIOSen which forget to turn
2277 * the TMDS output buffers back on after a reboot.
2279 intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
2283 intel_hdmi_unset_edid(struct drm_connector *connector)
2285 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
2287 intel_hdmi->has_hdmi_sink = false;
2288 intel_hdmi->has_audio = false;
2290 intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE;
2291 intel_hdmi->dp_dual_mode.max_tmds_clock = 0;
2293 kfree(to_intel_connector(connector)->detect_edid);
2294 to_intel_connector(connector)->detect_edid = NULL;
2298 intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid)
2300 struct drm_i915_private *dev_priv = to_i915(connector->dev);
2301 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
2302 enum port port = hdmi_to_dig_port(hdmi)->base.port;
2303 struct i2c_adapter *adapter =
2304 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
2305 enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(&dev_priv->drm, adapter);
2308 * Type 1 DVI adaptors are not required to implement any
2309 * registers, so we can't always detect their presence.
2310 * Ideally we should be able to check the state of the
2311 * CONFIG1 pin, but no such luck on our hardware.
2313 * The only method left to us is to check the VBT to see
2314 * if the port is a dual mode capable DP port. But let's
2315 * only do that when we sucesfully read the EDID, to avoid
2316 * confusing log messages about DP dual mode adaptors when
2317 * there's nothing connected to the port.
2319 if (type == DRM_DP_DUAL_MODE_UNKNOWN) {
2320 /* An overridden EDID imply that we want this port for testing.
2321 * Make sure not to set limits for that port.
2323 if (has_edid && !connector->override_edid &&
2324 intel_bios_is_port_dp_dual_mode(dev_priv, port)) {
2325 drm_dbg_kms(&dev_priv->drm,
2326 "Assuming DP dual mode adaptor presence based on VBT\n");
2327 type = DRM_DP_DUAL_MODE_TYPE1_DVI;
2329 type = DRM_DP_DUAL_MODE_NONE;
2333 if (type == DRM_DP_DUAL_MODE_NONE)
2336 hdmi->dp_dual_mode.type = type;
2337 hdmi->dp_dual_mode.max_tmds_clock =
2338 drm_dp_dual_mode_max_tmds_clock(&dev_priv->drm, type, adapter);
2340 drm_dbg_kms(&dev_priv->drm,
2341 "DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n",
2342 drm_dp_get_dual_mode_type_name(type),
2343 hdmi->dp_dual_mode.max_tmds_clock);
2347 intel_hdmi_set_edid(struct drm_connector *connector)
2349 struct drm_i915_private *dev_priv = to_i915(connector->dev);
2350 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
2351 intel_wakeref_t wakeref;
2353 bool connected = false;
2354 struct i2c_adapter *i2c;
2356 wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
2358 i2c = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
2360 edid = drm_get_edid(connector, i2c);
2362 if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
2363 drm_dbg_kms(&dev_priv->drm,
2364 "HDMI GMBUS EDID read failed, retry using GPIO bit-banging\n");
2365 intel_gmbus_force_bit(i2c, true);
2366 edid = drm_get_edid(connector, i2c);
2367 intel_gmbus_force_bit(i2c, false);
2370 intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);
2372 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref);
2374 to_intel_connector(connector)->detect_edid = edid;
2375 if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
2376 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
2377 intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
2382 cec_notifier_set_phys_addr_from_edid(intel_hdmi->cec_notifier, edid);
2387 static enum drm_connector_status
2388 intel_hdmi_detect(struct drm_connector *connector, bool force)
2390 enum drm_connector_status status = connector_status_disconnected;
2391 struct drm_i915_private *dev_priv = to_i915(connector->dev);
2392 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
2393 struct intel_encoder *encoder = &hdmi_to_dig_port(intel_hdmi)->base;
2394 intel_wakeref_t wakeref;
2396 drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",
2397 connector->base.id, connector->name);
2399 if (!INTEL_DISPLAY_ENABLED(dev_priv))
2400 return connector_status_disconnected;
2402 wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
2404 if (DISPLAY_VER(dev_priv) >= 11 &&
2405 !intel_digital_port_connected(encoder))
2408 intel_hdmi_unset_edid(connector);
2410 if (intel_hdmi_set_edid(connector))
2411 status = connector_status_connected;
2414 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref);
2416 if (status != connector_status_connected)
2417 cec_notifier_phys_addr_invalidate(intel_hdmi->cec_notifier);
2420 * Make sure the refs for power wells enabled during detect are
2421 * dropped to avoid a new detect cycle triggered by HPD polling.
2423 intel_display_power_flush_work(dev_priv);
2429 intel_hdmi_force(struct drm_connector *connector)
2431 struct drm_i915_private *i915 = to_i915(connector->dev);
2433 drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n",
2434 connector->base.id, connector->name);
2436 intel_hdmi_unset_edid(connector);
2438 if (connector->status != connector_status_connected)
2441 intel_hdmi_set_edid(connector);
2444 static int intel_hdmi_get_modes(struct drm_connector *connector)
2448 edid = to_intel_connector(connector)->detect_edid;
2452 return intel_connector_update_modes(connector, edid);
2455 static struct i2c_adapter *
2456 intel_hdmi_get_i2c_adapter(struct drm_connector *connector)
2458 struct drm_i915_private *dev_priv = to_i915(connector->dev);
2459 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
2461 return intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
2464 static void intel_hdmi_create_i2c_symlink(struct drm_connector *connector)
2466 struct drm_i915_private *i915 = to_i915(connector->dev);
2467 struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector);
2468 struct kobject *i2c_kobj = &adapter->dev.kobj;
2469 struct kobject *connector_kobj = &connector->kdev->kobj;
2472 ret = sysfs_create_link(connector_kobj, i2c_kobj, i2c_kobj->name);
2474 drm_err(&i915->drm, "Failed to create i2c symlink (%d)\n", ret);
2477 static void intel_hdmi_remove_i2c_symlink(struct drm_connector *connector)
2479 struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector);
2480 struct kobject *i2c_kobj = &adapter->dev.kobj;
2481 struct kobject *connector_kobj = &connector->kdev->kobj;
2483 sysfs_remove_link(connector_kobj, i2c_kobj->name);
2487 intel_hdmi_connector_register(struct drm_connector *connector)
2491 ret = intel_connector_register(connector);
2495 intel_hdmi_create_i2c_symlink(connector);
2500 static void intel_hdmi_connector_unregister(struct drm_connector *connector)
2502 struct cec_notifier *n = intel_attached_hdmi(to_intel_connector(connector))->cec_notifier;
2504 cec_notifier_conn_unregister(n);
2506 intel_hdmi_remove_i2c_symlink(connector);
2507 intel_connector_unregister(connector);
2510 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
2511 .detect = intel_hdmi_detect,
2512 .force = intel_hdmi_force,
2513 .fill_modes = drm_helper_probe_single_connector_modes,
2514 .atomic_get_property = intel_digital_connector_atomic_get_property,
2515 .atomic_set_property = intel_digital_connector_atomic_set_property,
2516 .late_register = intel_hdmi_connector_register,
2517 .early_unregister = intel_hdmi_connector_unregister,
2518 .destroy = intel_connector_destroy,
2519 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
2520 .atomic_duplicate_state = intel_digital_connector_duplicate_state,
2523 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
2524 .get_modes = intel_hdmi_get_modes,
2525 .mode_valid = intel_hdmi_mode_valid,
2526 .atomic_check = intel_digital_connector_atomic_check,
2530 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
2532 struct drm_i915_private *dev_priv = to_i915(connector->dev);
2534 intel_attach_force_audio_property(connector);
2535 intel_attach_broadcast_rgb_property(connector);
2536 intel_attach_aspect_ratio_property(connector);
2538 intel_attach_hdmi_colorspace_property(connector);
2539 drm_connector_attach_content_type_property(connector);
2541 if (DISPLAY_VER(dev_priv) >= 10)
2542 drm_connector_attach_hdr_output_metadata_property(connector);
2544 if (!HAS_GMCH(dev_priv))
2545 drm_connector_attach_max_bpc_property(connector, 8, 12);
2549 * intel_hdmi_handle_sink_scrambling: handle sink scrambling/clock ratio setup
2550 * @encoder: intel_encoder
2551 * @connector: drm_connector
2552 * @high_tmds_clock_ratio = bool to indicate if the function needs to set
2553 * or reset the high tmds clock ratio for scrambling
2554 * @scrambling: bool to Indicate if the function needs to set or reset
2557 * This function handles scrambling on HDMI 2.0 capable sinks.
2558 * If required clock rate is > 340 Mhz && scrambling is supported by sink
2559 * it enables scrambling. This should be called before enabling the HDMI
2560 * 2.0 port, as the sink can choose to disable the scrambling if it doesn't
2561 * detect a scrambled clock within 100 ms.
2564 * True on success, false on failure.
2566 bool intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder,
2567 struct drm_connector *connector,
2568 bool high_tmds_clock_ratio,
2571 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2572 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
2573 struct drm_scrambling *sink_scrambling =
2574 &connector->display_info.hdmi.scdc.scrambling;
2575 struct i2c_adapter *adapter =
2576 intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
2578 if (!sink_scrambling->supported)
2581 drm_dbg_kms(&dev_priv->drm,
2582 "[CONNECTOR:%d:%s] scrambling=%s, TMDS bit clock ratio=1/%d\n",
2583 connector->base.id, connector->name,
2584 yesno(scrambling), high_tmds_clock_ratio ? 40 : 10);
2586 /* Set TMDS bit clock ratio to 1/40 or 1/10, and enable/disable scrambling */
2587 return drm_scdc_set_high_tmds_clock_ratio(adapter,
2588 high_tmds_clock_ratio) &&
2589 drm_scdc_set_scrambling(adapter, scrambling);
2592 static u8 chv_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2598 ddc_pin = GMBUS_PIN_DPB;
2601 ddc_pin = GMBUS_PIN_DPC;
2604 ddc_pin = GMBUS_PIN_DPD_CHV;
2608 ddc_pin = GMBUS_PIN_DPB;
2614 static u8 bxt_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2620 ddc_pin = GMBUS_PIN_1_BXT;
2623 ddc_pin = GMBUS_PIN_2_BXT;
2627 ddc_pin = GMBUS_PIN_1_BXT;
2633 static u8 cnp_port_to_ddc_pin(struct drm_i915_private *dev_priv,
2640 ddc_pin = GMBUS_PIN_1_BXT;
2643 ddc_pin = GMBUS_PIN_2_BXT;
2646 ddc_pin = GMBUS_PIN_4_CNP;
2649 ddc_pin = GMBUS_PIN_3_BXT;
2653 ddc_pin = GMBUS_PIN_1_BXT;
2659 static u8 icl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2661 enum phy phy = intel_port_to_phy(dev_priv, port);
2663 if (intel_phy_is_combo(dev_priv, phy))
2664 return GMBUS_PIN_1_BXT + port;
2665 else if (intel_phy_is_tc(dev_priv, phy))
2666 return GMBUS_PIN_9_TC1_ICP + intel_port_to_tc(dev_priv, port);
2668 drm_WARN(&dev_priv->drm, 1, "Unknown port:%c\n", port_name(port));
2669 return GMBUS_PIN_2_BXT;
2672 static u8 mcc_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2674 enum phy phy = intel_port_to_phy(dev_priv, port);
2679 ddc_pin = GMBUS_PIN_1_BXT;
2682 ddc_pin = GMBUS_PIN_2_BXT;
2685 ddc_pin = GMBUS_PIN_9_TC1_ICP;
2689 ddc_pin = GMBUS_PIN_1_BXT;
2695 static u8 rkl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2697 enum phy phy = intel_port_to_phy(dev_priv, port);
2699 WARN_ON(port == PORT_C);
2702 * Pin mapping for RKL depends on which PCH is present. With TGP, the
2703 * final two outputs use type-c pins, even though they're actually
2704 * combo outputs. With CMP, the traditional DDI A-D pins are used for
2707 if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && phy >= PHY_C)
2708 return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;
2710 return GMBUS_PIN_1_BXT + phy;
2713 static u8 gen9bc_tgp_port_to_ddc_pin(struct drm_i915_private *i915, enum port port)
2715 enum phy phy = intel_port_to_phy(i915, port);
2717 drm_WARN_ON(&i915->drm, port == PORT_A);
2720 * Pin mapping for GEN9 BC depends on which PCH is present. With TGP,
2721 * final two outputs use type-c pins, even though they're actually
2722 * combo outputs. With CMP, the traditional DDI A-D pins are used for
2725 if (INTEL_PCH_TYPE(i915) >= PCH_TGP && phy >= PHY_C)
2726 return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;
2728 return GMBUS_PIN_1_BXT + phy;
2731 static u8 dg1_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2733 return intel_port_to_phy(dev_priv, port) + 1;
2736 static u8 adls_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
2738 enum phy phy = intel_port_to_phy(dev_priv, port);
2740 WARN_ON(port == PORT_B || port == PORT_C);
2743 * Pin mapping for ADL-S requires TC pins for all combo phy outputs
2744 * except first combo output.
2747 return GMBUS_PIN_1_BXT;
2749 return GMBUS_PIN_9_TC1_ICP + phy - PHY_B;
2752 static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv,
2759 ddc_pin = GMBUS_PIN_DPB;
2762 ddc_pin = GMBUS_PIN_DPC;
2765 ddc_pin = GMBUS_PIN_DPD;
2769 ddc_pin = GMBUS_PIN_DPB;
2775 static u8 intel_hdmi_ddc_pin(struct intel_encoder *encoder)
2777 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
2778 enum port port = encoder->port;
2781 ddc_pin = intel_bios_alternate_ddc_pin(encoder);
2783 drm_dbg_kms(&dev_priv->drm,
2784 "Using DDC pin 0x%x for port %c (VBT)\n",
2785 ddc_pin, port_name(port));
2789 if (IS_ALDERLAKE_S(dev_priv))
2790 ddc_pin = adls_port_to_ddc_pin(dev_priv, port);
2791 else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
2792 ddc_pin = dg1_port_to_ddc_pin(dev_priv, port);
2793 else if (IS_ROCKETLAKE(dev_priv))
2794 ddc_pin = rkl_port_to_ddc_pin(dev_priv, port);
2795 else if (DISPLAY_VER(dev_priv) == 9 && HAS_PCH_TGP(dev_priv))
2796 ddc_pin = gen9bc_tgp_port_to_ddc_pin(dev_priv, port);
2797 else if (HAS_PCH_MCC(dev_priv))
2798 ddc_pin = mcc_port_to_ddc_pin(dev_priv, port);
2799 else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
2800 ddc_pin = icl_port_to_ddc_pin(dev_priv, port);
2801 else if (HAS_PCH_CNP(dev_priv))
2802 ddc_pin = cnp_port_to_ddc_pin(dev_priv, port);
2803 else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
2804 ddc_pin = bxt_port_to_ddc_pin(dev_priv, port);
2805 else if (IS_CHERRYVIEW(dev_priv))
2806 ddc_pin = chv_port_to_ddc_pin(dev_priv, port);
2808 ddc_pin = g4x_port_to_ddc_pin(dev_priv, port);
2810 drm_dbg_kms(&dev_priv->drm,
2811 "Using DDC pin 0x%x for port %c (platform default)\n",
2812 ddc_pin, port_name(port));
2817 void intel_infoframe_init(struct intel_digital_port *dig_port)
2819 struct drm_i915_private *dev_priv =
2820 to_i915(dig_port->base.base.dev);
2822 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
2823 dig_port->write_infoframe = vlv_write_infoframe;
2824 dig_port->read_infoframe = vlv_read_infoframe;
2825 dig_port->set_infoframes = vlv_set_infoframes;
2826 dig_port->infoframes_enabled = vlv_infoframes_enabled;
2827 } else if (IS_G4X(dev_priv)) {
2828 dig_port->write_infoframe = g4x_write_infoframe;
2829 dig_port->read_infoframe = g4x_read_infoframe;
2830 dig_port->set_infoframes = g4x_set_infoframes;
2831 dig_port->infoframes_enabled = g4x_infoframes_enabled;
2832 } else if (HAS_DDI(dev_priv)) {
2833 if (intel_bios_is_lspcon_present(dev_priv, dig_port->base.port)) {
2834 dig_port->write_infoframe = lspcon_write_infoframe;
2835 dig_port->read_infoframe = lspcon_read_infoframe;
2836 dig_port->set_infoframes = lspcon_set_infoframes;
2837 dig_port->infoframes_enabled = lspcon_infoframes_enabled;
2839 dig_port->write_infoframe = hsw_write_infoframe;
2840 dig_port->read_infoframe = hsw_read_infoframe;
2841 dig_port->set_infoframes = hsw_set_infoframes;
2842 dig_port->infoframes_enabled = hsw_infoframes_enabled;
2844 } else if (HAS_PCH_IBX(dev_priv)) {
2845 dig_port->write_infoframe = ibx_write_infoframe;
2846 dig_port->read_infoframe = ibx_read_infoframe;
2847 dig_port->set_infoframes = ibx_set_infoframes;
2848 dig_port->infoframes_enabled = ibx_infoframes_enabled;
2850 dig_port->write_infoframe = cpt_write_infoframe;
2851 dig_port->read_infoframe = cpt_read_infoframe;
2852 dig_port->set_infoframes = cpt_set_infoframes;
2853 dig_port->infoframes_enabled = cpt_infoframes_enabled;
2857 void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
2858 struct intel_connector *intel_connector)
2860 struct drm_connector *connector = &intel_connector->base;
2861 struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
2862 struct intel_encoder *intel_encoder = &dig_port->base;
2863 struct drm_device *dev = intel_encoder->base.dev;
2864 struct drm_i915_private *dev_priv = to_i915(dev);
2865 struct i2c_adapter *ddc;
2866 enum port port = intel_encoder->port;
2867 struct cec_connector_info conn_info;
2869 drm_dbg_kms(&dev_priv->drm,
2870 "Adding HDMI connector on [ENCODER:%d:%s]\n",
2871 intel_encoder->base.base.id, intel_encoder->base.name);
2873 if (DISPLAY_VER(dev_priv) < 12 && drm_WARN_ON(dev, port == PORT_A))
2876 if (drm_WARN(dev, dig_port->max_lanes < 4,
2877 "Not enough lanes (%d) for HDMI on [ENCODER:%d:%s]\n",
2878 dig_port->max_lanes, intel_encoder->base.base.id,
2879 intel_encoder->base.name))
2882 intel_hdmi->ddc_bus = intel_hdmi_ddc_pin(intel_encoder);
2883 ddc = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
2885 drm_connector_init_with_ddc(dev, connector,
2886 &intel_hdmi_connector_funcs,
2887 DRM_MODE_CONNECTOR_HDMIA,
2889 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
2891 connector->interlace_allowed = 1;
2892 connector->doublescan_allowed = 0;
2893 connector->stereo_allowed = 1;
2895 if (DISPLAY_VER(dev_priv) >= 10)
2896 connector->ycbcr_420_allowed = true;
2898 intel_connector->polled = DRM_CONNECTOR_POLL_HPD;
2900 if (HAS_DDI(dev_priv))
2901 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
2903 intel_connector->get_hw_state = intel_connector_get_hw_state;
2905 intel_hdmi_add_properties(intel_hdmi, connector);
2907 intel_connector_attach_encoder(intel_connector, intel_encoder);
2908 intel_hdmi->attached_connector = intel_connector;
2910 if (is_hdcp_supported(dev_priv, port)) {
2911 int ret = intel_hdcp_init(intel_connector, dig_port,
2912 &intel_hdmi_hdcp_shim);
2914 drm_dbg_kms(&dev_priv->drm,
2915 "HDCP init failed, skipping.\n");
2918 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
2919 * 0xd. Failure to do so will result in spurious interrupts being
2920 * generated on the port when a cable is not attached.
2922 if (IS_G45(dev_priv)) {
2923 u32 temp = intel_de_read(dev_priv, PEG_BAND_GAP_DATA);
2924 intel_de_write(dev_priv, PEG_BAND_GAP_DATA,
2925 (temp & ~0xf) | 0xd);
2928 cec_fill_conn_info_from_drm(&conn_info, connector);
2930 intel_hdmi->cec_notifier =
2931 cec_notifier_conn_register(dev->dev, port_identifier(port),
2933 if (!intel_hdmi->cec_notifier)
2934 drm_dbg_kms(&dev_priv->drm, "CEC notifier get failed\n");
2938 * intel_hdmi_dsc_get_slice_height - get the dsc slice_height
2939 * @vactive: Vactive of a display mode
2941 * @return: appropriate dsc slice height for a given mode.
2943 int intel_hdmi_dsc_get_slice_height(int vactive)
2948 * Slice Height determination : HDMI2.1 Section 7.7.5.2
2949 * Select smallest slice height >=96, that results in a valid PPS and
2950 * requires minimum padding lines required for final slice.
2952 * Assumption : Vactive is even.
2954 for (slice_height = 96; slice_height <= vactive; slice_height += 2)
2955 if (vactive % slice_height == 0)
2956 return slice_height;
2962 * intel_hdmi_dsc_get_num_slices - get no. of dsc slices based on dsc encoder
2963 * and dsc decoder capabilities
2965 * @crtc_state: intel crtc_state
2966 * @src_max_slices: maximum slices supported by the DSC encoder
2967 * @src_max_slice_width: maximum slice width supported by DSC encoder
2968 * @hdmi_max_slices: maximum slices supported by sink DSC decoder
2969 * @hdmi_throughput: maximum clock per slice (MHz) supported by HDMI sink
2971 * @return: num of dsc slices that can be supported by the dsc encoder
2975 intel_hdmi_dsc_get_num_slices(const struct intel_crtc_state *crtc_state,
2976 int src_max_slices, int src_max_slice_width,
2977 int hdmi_max_slices, int hdmi_throughput)
2979 /* Pixel rates in KPixels/sec */
2980 #define HDMI_DSC_PEAK_PIXEL_RATE 2720000
2982 * Rates at which the source and sink are required to process pixels in each
2983 * slice, can be two levels: either atleast 340000KHz or atleast 40000KHz.
2985 #define HDMI_DSC_MAX_ENC_THROUGHPUT_0 340000
2986 #define HDMI_DSC_MAX_ENC_THROUGHPUT_1 400000
2988 /* Spec limits the slice width to 2720 pixels */
2989 #define MAX_HDMI_SLICE_WIDTH 2720
2991 int adjusted_clk_khz;
2994 int max_throughput; /* max clock freq. in khz per slice */
2995 int max_slice_width;
2997 int pixel_clock = crtc_state->hw.adjusted_mode.crtc_clock;
2999 if (!hdmi_throughput)
3003 * Slice Width determination : HDMI2.1 Section 7.7.5.1
3004 * kslice_adjust factor for 4:2:0, and 4:2:2 formats is 0.5, where as
3005 * for 4:4:4 is 1.0. Multiplying these factors by 10 and later
3006 * dividing adjusted clock value by 10.
3008 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 ||
3009 crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB)
3015 * As per spec, the rate at which the source and the sink process
3016 * the pixels per slice are at two levels: atleast 340Mhz or 400Mhz.
3017 * This depends upon the pixel clock rate and output formats
3019 * If pixel clock * kslice adjust >= 2720MHz slices can be processed
3020 * at max 340MHz, otherwise they can be processed at max 400MHz.
3023 adjusted_clk_khz = DIV_ROUND_UP(kslice_adjust * pixel_clock, 10);
3025 if (adjusted_clk_khz <= HDMI_DSC_PEAK_PIXEL_RATE)
3026 max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_0;
3028 max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_1;
3031 * Taking into account the sink's capability for maximum
3032 * clock per slice (in MHz) as read from HF-VSDB.
3034 max_throughput = min(max_throughput, hdmi_throughput * 1000);
3036 min_slices = DIV_ROUND_UP(adjusted_clk_khz, max_throughput);
3037 max_slice_width = min(MAX_HDMI_SLICE_WIDTH, src_max_slice_width);
3040 * Keep on increasing the num of slices/line, starting from min_slices
3041 * per line till we get such a number, for which the slice_width is
3042 * just less than max_slice_width. The slices/line selected should be
3043 * less than or equal to the max horizontal slices that the combination
3044 * of PCON encoder and HDMI decoder can support.
3046 slice_width = max_slice_width;
3049 if (min_slices <= 1 && src_max_slices >= 1 && hdmi_max_slices >= 1)
3051 else if (min_slices <= 2 && src_max_slices >= 2 && hdmi_max_slices >= 2)
3053 else if (min_slices <= 4 && src_max_slices >= 4 && hdmi_max_slices >= 4)
3055 else if (min_slices <= 8 && src_max_slices >= 8 && hdmi_max_slices >= 8)
3057 else if (min_slices <= 12 && src_max_slices >= 12 && hdmi_max_slices >= 12)
3059 else if (min_slices <= 16 && src_max_slices >= 16 && hdmi_max_slices >= 16)
3064 slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay, target_slices);
3065 if (slice_width >= max_slice_width)
3066 min_slices = target_slices + 1;
3067 } while (slice_width >= max_slice_width);
3069 return target_slices;
3073 * intel_hdmi_dsc_get_bpp - get the appropriate compressed bits_per_pixel based on
3074 * source and sink capabilities.
3076 * @src_fraction_bpp: fractional bpp supported by the source
3077 * @slice_width: dsc slice width supported by the source and sink
3078 * @num_slices: num of slices supported by the source and sink
3079 * @output_format: video output format
3080 * @hdmi_all_bpp: sink supports decoding of 1/16th bpp setting
3081 * @hdmi_max_chunk_bytes: max bytes in a line of chunks supported by sink
3083 * @return: compressed bits_per_pixel in step of 1/16 of bits_per_pixel
3086 intel_hdmi_dsc_get_bpp(int src_fractional_bpp, int slice_width, int num_slices,
3087 int output_format, bool hdmi_all_bpp,
3088 int hdmi_max_chunk_bytes)
3090 int max_dsc_bpp, min_dsc_bpp;
3092 bool bpp_found = false;
3093 int bpp_decrement_x16;
3098 * Get min bpp and max bpp as per Table 7.23, in HDMI2.1 spec
3099 * Start with the max bpp and keep on decrementing with
3100 * fractional bpp, if supported by PCON DSC encoder
3102 * for each bpp we check if no of bytes can be supported by HDMI sink
3105 /* Assuming: bpc as 8*/
3106 if (output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
3108 max_dsc_bpp = 3 * 4; /* 3*bpc/2 */
3109 } else if (output_format == INTEL_OUTPUT_FORMAT_YCBCR444 ||
3110 output_format == INTEL_OUTPUT_FORMAT_RGB) {
3112 max_dsc_bpp = 3 * 8; /* 3*bpc */
3114 /* Assuming 4:2:2 encoding */
3116 max_dsc_bpp = 2 * 8; /* 2*bpc */
3120 * Taking into account if all dsc_all_bpp supported by HDMI2.1 sink
3121 * Section 7.7.34 : Source shall not enable compressed Video
3122 * Transport with bpp_target settings above 12 bpp unless
3123 * DSC_all_bpp is set to 1.
3126 max_dsc_bpp = min(max_dsc_bpp, 12);
3129 * The Sink has a limit of compressed data in bytes for a scanline,
3130 * as described in max_chunk_bytes field in HFVSDB block of edid.
3131 * The no. of bytes depend on the target bits per pixel that the
3132 * source configures. So we start with the max_bpp and calculate
3133 * the target_chunk_bytes. We keep on decrementing the target_bpp,
3134 * till we get the target_chunk_bytes just less than what the sink's
3135 * max_chunk_bytes, or else till we reach the min_dsc_bpp.
3137 * The decrement is according to the fractional support from PCON DSC
3138 * encoder. For fractional BPP we use bpp_target as a multiple of 16.
3140 * bpp_target_x16 = bpp_target * 16
3141 * So we need to decrement by {1, 2, 4, 8, 16} for fractional bpps
3142 * {1/16, 1/8, 1/4, 1/2, 1} respectively.
3145 bpp_target = max_dsc_bpp;
3147 /* src does not support fractional bpp implies decrement by 16 for bppx16 */
3148 if (!src_fractional_bpp)
3149 src_fractional_bpp = 1;
3150 bpp_decrement_x16 = DIV_ROUND_UP(16, src_fractional_bpp);
3151 bpp_target_x16 = (bpp_target * 16) - bpp_decrement_x16;
3153 while (bpp_target_x16 > (min_dsc_bpp * 16)) {
3156 bpp = DIV_ROUND_UP(bpp_target_x16, 16);
3157 target_bytes = DIV_ROUND_UP((num_slices * slice_width * bpp), 8);
3158 if (target_bytes <= hdmi_max_chunk_bytes) {
3162 bpp_target_x16 -= bpp_decrement_x16;
3165 return bpp_target_x16;