1 /* 2 * Copyright 2006 Dave Airlie <airlied@linux.ie> 3 * Copyright © 2006-2009 Intel Corporation 4 * 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: 11 * 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 14 * Software. 15 * 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. 23 * 24 * Authors: 25 * Eric Anholt <eric@anholt.net> 26 * Jesse Barnes <jesse.barnes@intel.com> 27 */ 28 29 #include <linux/delay.h> 30 #include <linux/hdmi.h> 31 #include <linux/i2c.h> 32 #include <linux/slab.h> 33 #include <linux/string_helpers.h> 34 35 #include <drm/display/drm_hdcp_helper.h> 36 #include <drm/display/drm_hdmi_helper.h> 37 #include <drm/display/drm_scdc_helper.h> 38 #include <drm/drm_atomic_helper.h> 39 #include <drm/drm_crtc.h> 40 #include <drm/drm_edid.h> 41 #include <drm/intel_lpe_audio.h> 42 43 #include "g4x_hdmi.h" 44 #include "i915_drv.h" 45 #include "i915_reg.h" 46 #include "intel_atomic.h" 47 #include "intel_audio.h" 48 #include "intel_connector.h" 49 #include "intel_cx0_phy.h" 50 #include "intel_ddi.h" 51 #include "intel_de.h" 52 #include "intel_display_types.h" 53 #include "intel_dp.h" 54 #include "intel_gmbus.h" 55 #include "intel_hdcp.h" 56 #include "intel_hdcp_regs.h" 57 #include "intel_hdmi.h" 58 #include "intel_lspcon.h" 59 #include "intel_panel.h" 60 #include "intel_snps_phy.h" 61 62 inline struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi) 63 { 64 return to_i915(hdmi_to_dig_port(intel_hdmi)->base.base.dev); 65 } 66 67 static void 68 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi) 69 { 70 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(intel_hdmi); 71 u32 enabled_bits; 72 73 enabled_bits = HAS_DDI(dev_priv) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE; 74 75 drm_WARN(&dev_priv->drm, 76 intel_de_read(dev_priv, intel_hdmi->hdmi_reg) & enabled_bits, 77 "HDMI port enabled, expecting disabled\n"); 78 } 79 80 static void 81 assert_hdmi_transcoder_func_disabled(struct drm_i915_private *dev_priv, 82 enum transcoder cpu_transcoder) 83 { 84 drm_WARN(&dev_priv->drm, 85 intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder)) & 86 TRANS_DDI_FUNC_ENABLE, 87 "HDMI transcoder function enabled, expecting disabled\n"); 88 } 89 90 static u32 g4x_infoframe_index(unsigned int type) 91 { 92 switch (type) { 93 case HDMI_PACKET_TYPE_GAMUT_METADATA: 94 return VIDEO_DIP_SELECT_GAMUT; 95 case HDMI_INFOFRAME_TYPE_AVI: 96 return VIDEO_DIP_SELECT_AVI; 97 case HDMI_INFOFRAME_TYPE_SPD: 98 return VIDEO_DIP_SELECT_SPD; 99 case HDMI_INFOFRAME_TYPE_VENDOR: 100 return VIDEO_DIP_SELECT_VENDOR; 101 default: 102 MISSING_CASE(type); 103 return 0; 104 } 105 } 106 107 static u32 g4x_infoframe_enable(unsigned int type) 108 { 109 switch (type) { 110 case HDMI_PACKET_TYPE_GENERAL_CONTROL: 111 return VIDEO_DIP_ENABLE_GCP; 112 case HDMI_PACKET_TYPE_GAMUT_METADATA: 113 return VIDEO_DIP_ENABLE_GAMUT; 114 case DP_SDP_VSC: 115 return 0; 116 case HDMI_INFOFRAME_TYPE_AVI: 117 return VIDEO_DIP_ENABLE_AVI; 118 case HDMI_INFOFRAME_TYPE_SPD: 119 return VIDEO_DIP_ENABLE_SPD; 120 case HDMI_INFOFRAME_TYPE_VENDOR: 121 return VIDEO_DIP_ENABLE_VENDOR; 122 case HDMI_INFOFRAME_TYPE_DRM: 123 return 0; 124 default: 125 MISSING_CASE(type); 126 return 0; 127 } 128 } 129 130 static u32 hsw_infoframe_enable(unsigned int type) 131 { 132 switch (type) { 133 case HDMI_PACKET_TYPE_GENERAL_CONTROL: 134 return VIDEO_DIP_ENABLE_GCP_HSW; 135 case HDMI_PACKET_TYPE_GAMUT_METADATA: 136 return VIDEO_DIP_ENABLE_GMP_HSW; 137 case DP_SDP_VSC: 138 return VIDEO_DIP_ENABLE_VSC_HSW; 139 case DP_SDP_PPS: 140 return VDIP_ENABLE_PPS; 141 case HDMI_INFOFRAME_TYPE_AVI: 142 return VIDEO_DIP_ENABLE_AVI_HSW; 143 case HDMI_INFOFRAME_TYPE_SPD: 144 return VIDEO_DIP_ENABLE_SPD_HSW; 145 case HDMI_INFOFRAME_TYPE_VENDOR: 146 return VIDEO_DIP_ENABLE_VS_HSW; 147 case HDMI_INFOFRAME_TYPE_DRM: 148 return VIDEO_DIP_ENABLE_DRM_GLK; 149 default: 150 MISSING_CASE(type); 151 return 0; 152 } 153 } 154 155 static i915_reg_t 156 hsw_dip_data_reg(struct drm_i915_private *dev_priv, 157 enum transcoder cpu_transcoder, 158 unsigned int type, 159 int i) 160 { 161 switch (type) { 162 case HDMI_PACKET_TYPE_GAMUT_METADATA: 163 return HSW_TVIDEO_DIP_GMP_DATA(cpu_transcoder, i); 164 case DP_SDP_VSC: 165 return HSW_TVIDEO_DIP_VSC_DATA(cpu_transcoder, i); 166 case DP_SDP_PPS: 167 return ICL_VIDEO_DIP_PPS_DATA(cpu_transcoder, i); 168 case HDMI_INFOFRAME_TYPE_AVI: 169 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i); 170 case HDMI_INFOFRAME_TYPE_SPD: 171 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i); 172 case HDMI_INFOFRAME_TYPE_VENDOR: 173 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i); 174 case HDMI_INFOFRAME_TYPE_DRM: 175 return GLK_TVIDEO_DIP_DRM_DATA(cpu_transcoder, i); 176 default: 177 MISSING_CASE(type); 178 return INVALID_MMIO_REG; 179 } 180 } 181 182 static int hsw_dip_data_size(struct drm_i915_private *dev_priv, 183 unsigned int type) 184 { 185 switch (type) { 186 case DP_SDP_VSC: 187 return VIDEO_DIP_VSC_DATA_SIZE; 188 case DP_SDP_PPS: 189 return VIDEO_DIP_PPS_DATA_SIZE; 190 case HDMI_PACKET_TYPE_GAMUT_METADATA: 191 if (DISPLAY_VER(dev_priv) >= 11) 192 return VIDEO_DIP_GMP_DATA_SIZE; 193 else 194 return VIDEO_DIP_DATA_SIZE; 195 default: 196 return VIDEO_DIP_DATA_SIZE; 197 } 198 } 199 200 static void g4x_write_infoframe(struct intel_encoder *encoder, 201 const struct intel_crtc_state *crtc_state, 202 unsigned int type, 203 const void *frame, ssize_t len) 204 { 205 const u32 *data = frame; 206 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 207 u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL); 208 int i; 209 210 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE), 211 "Writing DIP with CTL reg disabled\n"); 212 213 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */ 214 val |= g4x_infoframe_index(type); 215 216 val &= ~g4x_infoframe_enable(type); 217 218 intel_de_write(dev_priv, VIDEO_DIP_CTL, val); 219 220 for (i = 0; i < len; i += 4) { 221 intel_de_write(dev_priv, VIDEO_DIP_DATA, *data); 222 data++; 223 } 224 /* Write every possible data byte to force correct ECC calculation. */ 225 for (; i < VIDEO_DIP_DATA_SIZE; i += 4) 226 intel_de_write(dev_priv, VIDEO_DIP_DATA, 0); 227 228 val |= g4x_infoframe_enable(type); 229 val &= ~VIDEO_DIP_FREQ_MASK; 230 val |= VIDEO_DIP_FREQ_VSYNC; 231 232 intel_de_write(dev_priv, VIDEO_DIP_CTL, val); 233 intel_de_posting_read(dev_priv, VIDEO_DIP_CTL); 234 } 235 236 static void g4x_read_infoframe(struct intel_encoder *encoder, 237 const struct intel_crtc_state *crtc_state, 238 unsigned int type, 239 void *frame, ssize_t len) 240 { 241 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 242 u32 *data = frame; 243 int i; 244 245 intel_de_rmw(dev_priv, VIDEO_DIP_CTL, 246 VIDEO_DIP_SELECT_MASK | 0xf, g4x_infoframe_index(type)); 247 248 for (i = 0; i < len; i += 4) 249 *data++ = intel_de_read(dev_priv, VIDEO_DIP_DATA); 250 } 251 252 static u32 g4x_infoframes_enabled(struct intel_encoder *encoder, 253 const struct intel_crtc_state *pipe_config) 254 { 255 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 256 u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL); 257 258 if ((val & VIDEO_DIP_ENABLE) == 0) 259 return 0; 260 261 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port)) 262 return 0; 263 264 return val & (VIDEO_DIP_ENABLE_AVI | 265 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD); 266 } 267 268 static void ibx_write_infoframe(struct intel_encoder *encoder, 269 const struct intel_crtc_state *crtc_state, 270 unsigned int type, 271 const void *frame, ssize_t len) 272 { 273 const u32 *data = frame; 274 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 275 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 276 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe); 277 u32 val = intel_de_read(dev_priv, reg); 278 int i; 279 280 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE), 281 "Writing DIP with CTL reg disabled\n"); 282 283 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */ 284 val |= g4x_infoframe_index(type); 285 286 val &= ~g4x_infoframe_enable(type); 287 288 intel_de_write(dev_priv, reg, val); 289 290 for (i = 0; i < len; i += 4) { 291 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 292 *data); 293 data++; 294 } 295 /* Write every possible data byte to force correct ECC calculation. */ 296 for (; i < VIDEO_DIP_DATA_SIZE; i += 4) 297 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0); 298 299 val |= g4x_infoframe_enable(type); 300 val &= ~VIDEO_DIP_FREQ_MASK; 301 val |= VIDEO_DIP_FREQ_VSYNC; 302 303 intel_de_write(dev_priv, reg, val); 304 intel_de_posting_read(dev_priv, reg); 305 } 306 307 static void ibx_read_infoframe(struct intel_encoder *encoder, 308 const struct intel_crtc_state *crtc_state, 309 unsigned int type, 310 void *frame, ssize_t len) 311 { 312 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 313 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 314 u32 *data = frame; 315 int i; 316 317 intel_de_rmw(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), 318 VIDEO_DIP_SELECT_MASK | 0xf, g4x_infoframe_index(type)); 319 320 for (i = 0; i < len; i += 4) 321 *data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe)); 322 } 323 324 static u32 ibx_infoframes_enabled(struct intel_encoder *encoder, 325 const struct intel_crtc_state *pipe_config) 326 { 327 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 328 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe; 329 i915_reg_t reg = TVIDEO_DIP_CTL(pipe); 330 u32 val = intel_de_read(dev_priv, reg); 331 332 if ((val & VIDEO_DIP_ENABLE) == 0) 333 return 0; 334 335 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port)) 336 return 0; 337 338 return val & (VIDEO_DIP_ENABLE_AVI | 339 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 340 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 341 } 342 343 static void cpt_write_infoframe(struct intel_encoder *encoder, 344 const struct intel_crtc_state *crtc_state, 345 unsigned int type, 346 const void *frame, ssize_t len) 347 { 348 const u32 *data = frame; 349 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 350 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 351 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe); 352 u32 val = intel_de_read(dev_priv, reg); 353 int i; 354 355 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE), 356 "Writing DIP with CTL reg disabled\n"); 357 358 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */ 359 val |= g4x_infoframe_index(type); 360 361 /* The DIP control register spec says that we need to update the AVI 362 * infoframe without clearing its enable bit */ 363 if (type != HDMI_INFOFRAME_TYPE_AVI) 364 val &= ~g4x_infoframe_enable(type); 365 366 intel_de_write(dev_priv, reg, val); 367 368 for (i = 0; i < len; i += 4) { 369 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 370 *data); 371 data++; 372 } 373 /* Write every possible data byte to force correct ECC calculation. */ 374 for (; i < VIDEO_DIP_DATA_SIZE; i += 4) 375 intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0); 376 377 val |= g4x_infoframe_enable(type); 378 val &= ~VIDEO_DIP_FREQ_MASK; 379 val |= VIDEO_DIP_FREQ_VSYNC; 380 381 intel_de_write(dev_priv, reg, val); 382 intel_de_posting_read(dev_priv, reg); 383 } 384 385 static void cpt_read_infoframe(struct intel_encoder *encoder, 386 const struct intel_crtc_state *crtc_state, 387 unsigned int type, 388 void *frame, ssize_t len) 389 { 390 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 391 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 392 u32 *data = frame; 393 int i; 394 395 intel_de_rmw(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), 396 VIDEO_DIP_SELECT_MASK | 0xf, g4x_infoframe_index(type)); 397 398 for (i = 0; i < len; i += 4) 399 *data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe)); 400 } 401 402 static u32 cpt_infoframes_enabled(struct intel_encoder *encoder, 403 const struct intel_crtc_state *pipe_config) 404 { 405 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 406 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe; 407 u32 val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(pipe)); 408 409 if ((val & VIDEO_DIP_ENABLE) == 0) 410 return 0; 411 412 return val & (VIDEO_DIP_ENABLE_AVI | 413 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 414 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 415 } 416 417 static void vlv_write_infoframe(struct intel_encoder *encoder, 418 const struct intel_crtc_state *crtc_state, 419 unsigned int type, 420 const void *frame, ssize_t len) 421 { 422 const u32 *data = frame; 423 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 424 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 425 i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe); 426 u32 val = intel_de_read(dev_priv, reg); 427 int i; 428 429 drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE), 430 "Writing DIP with CTL reg disabled\n"); 431 432 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */ 433 val |= g4x_infoframe_index(type); 434 435 val &= ~g4x_infoframe_enable(type); 436 437 intel_de_write(dev_priv, reg, val); 438 439 for (i = 0; i < len; i += 4) { 440 intel_de_write(dev_priv, 441 VLV_TVIDEO_DIP_DATA(crtc->pipe), *data); 442 data++; 443 } 444 /* Write every possible data byte to force correct ECC calculation. */ 445 for (; i < VIDEO_DIP_DATA_SIZE; i += 4) 446 intel_de_write(dev_priv, 447 VLV_TVIDEO_DIP_DATA(crtc->pipe), 0); 448 449 val |= g4x_infoframe_enable(type); 450 val &= ~VIDEO_DIP_FREQ_MASK; 451 val |= VIDEO_DIP_FREQ_VSYNC; 452 453 intel_de_write(dev_priv, reg, val); 454 intel_de_posting_read(dev_priv, reg); 455 } 456 457 static void vlv_read_infoframe(struct intel_encoder *encoder, 458 const struct intel_crtc_state *crtc_state, 459 unsigned int type, 460 void *frame, ssize_t len) 461 { 462 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 463 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 464 u32 *data = frame; 465 int i; 466 467 intel_de_rmw(dev_priv, VLV_TVIDEO_DIP_CTL(crtc->pipe), 468 VIDEO_DIP_SELECT_MASK | 0xf, g4x_infoframe_index(type)); 469 470 for (i = 0; i < len; i += 4) 471 *data++ = intel_de_read(dev_priv, 472 VLV_TVIDEO_DIP_DATA(crtc->pipe)); 473 } 474 475 static u32 vlv_infoframes_enabled(struct intel_encoder *encoder, 476 const struct intel_crtc_state *pipe_config) 477 { 478 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 479 enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe; 480 u32 val = intel_de_read(dev_priv, VLV_TVIDEO_DIP_CTL(pipe)); 481 482 if ((val & VIDEO_DIP_ENABLE) == 0) 483 return 0; 484 485 if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port)) 486 return 0; 487 488 return val & (VIDEO_DIP_ENABLE_AVI | 489 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 490 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 491 } 492 493 void hsw_write_infoframe(struct intel_encoder *encoder, 494 const struct intel_crtc_state *crtc_state, 495 unsigned int type, 496 const void *frame, ssize_t len) 497 { 498 const u32 *data = frame; 499 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 500 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 501 i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder); 502 int data_size; 503 int i; 504 u32 val = intel_de_read(dev_priv, ctl_reg); 505 506 data_size = hsw_dip_data_size(dev_priv, type); 507 508 drm_WARN_ON(&dev_priv->drm, len > data_size); 509 510 val &= ~hsw_infoframe_enable(type); 511 intel_de_write(dev_priv, ctl_reg, val); 512 513 for (i = 0; i < len; i += 4) { 514 intel_de_write(dev_priv, 515 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2), 516 *data); 517 data++; 518 } 519 /* Write every possible data byte to force correct ECC calculation. */ 520 for (; i < data_size; i += 4) 521 intel_de_write(dev_priv, 522 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2), 523 0); 524 525 /* Wa_14013475917 */ 526 if (IS_DISPLAY_VER(dev_priv, 13, 14) && crtc_state->has_psr && type == DP_SDP_VSC) 527 return; 528 529 val |= hsw_infoframe_enable(type); 530 intel_de_write(dev_priv, ctl_reg, val); 531 intel_de_posting_read(dev_priv, ctl_reg); 532 } 533 534 void hsw_read_infoframe(struct intel_encoder *encoder, 535 const struct intel_crtc_state *crtc_state, 536 unsigned int type, void *frame, ssize_t len) 537 { 538 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 539 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 540 u32 *data = frame; 541 int i; 542 543 for (i = 0; i < len; i += 4) 544 *data++ = intel_de_read(dev_priv, 545 hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2)); 546 } 547 548 static u32 hsw_infoframes_enabled(struct intel_encoder *encoder, 549 const struct intel_crtc_state *pipe_config) 550 { 551 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 552 u32 val = intel_de_read(dev_priv, 553 HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder)); 554 u32 mask; 555 556 mask = (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW | 557 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW | 558 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW); 559 560 if (DISPLAY_VER(dev_priv) >= 10) 561 mask |= VIDEO_DIP_ENABLE_DRM_GLK; 562 563 return val & mask; 564 } 565 566 static const u8 infoframe_type_to_idx[] = { 567 HDMI_PACKET_TYPE_GENERAL_CONTROL, 568 HDMI_PACKET_TYPE_GAMUT_METADATA, 569 DP_SDP_VSC, 570 HDMI_INFOFRAME_TYPE_AVI, 571 HDMI_INFOFRAME_TYPE_SPD, 572 HDMI_INFOFRAME_TYPE_VENDOR, 573 HDMI_INFOFRAME_TYPE_DRM, 574 }; 575 576 u32 intel_hdmi_infoframe_enable(unsigned int type) 577 { 578 int i; 579 580 for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) { 581 if (infoframe_type_to_idx[i] == type) 582 return BIT(i); 583 } 584 585 return 0; 586 } 587 588 u32 intel_hdmi_infoframes_enabled(struct intel_encoder *encoder, 589 const struct intel_crtc_state *crtc_state) 590 { 591 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 592 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 593 u32 val, ret = 0; 594 int i; 595 596 val = dig_port->infoframes_enabled(encoder, crtc_state); 597 598 /* map from hardware bits to dip idx */ 599 for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) { 600 unsigned int type = infoframe_type_to_idx[i]; 601 602 if (HAS_DDI(dev_priv)) { 603 if (val & hsw_infoframe_enable(type)) 604 ret |= BIT(i); 605 } else { 606 if (val & g4x_infoframe_enable(type)) 607 ret |= BIT(i); 608 } 609 } 610 611 return ret; 612 } 613 614 /* 615 * The data we write to the DIP data buffer registers is 1 byte bigger than the 616 * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting 617 * at 0). It's also a byte used by DisplayPort so the same DIP registers can be 618 * used for both technologies. 619 * 620 * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0 621 * DW1: DB3 | DB2 | DB1 | DB0 622 * DW2: DB7 | DB6 | DB5 | DB4 623 * DW3: ... 624 * 625 * (HB is Header Byte, DB is Data Byte) 626 * 627 * The hdmi pack() functions don't know about that hardware specific hole so we 628 * trick them by giving an offset into the buffer and moving back the header 629 * bytes by one. 630 */ 631 static void intel_write_infoframe(struct intel_encoder *encoder, 632 const struct intel_crtc_state *crtc_state, 633 enum hdmi_infoframe_type type, 634 const union hdmi_infoframe *frame) 635 { 636 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 637 u8 buffer[VIDEO_DIP_DATA_SIZE]; 638 ssize_t len; 639 640 if ((crtc_state->infoframes.enable & 641 intel_hdmi_infoframe_enable(type)) == 0) 642 return; 643 644 if (drm_WARN_ON(encoder->base.dev, frame->any.type != type)) 645 return; 646 647 /* see comment above for the reason for this offset */ 648 len = hdmi_infoframe_pack_only(frame, buffer + 1, sizeof(buffer) - 1); 649 if (drm_WARN_ON(encoder->base.dev, len < 0)) 650 return; 651 652 /* Insert the 'hole' (see big comment above) at position 3 */ 653 memmove(&buffer[0], &buffer[1], 3); 654 buffer[3] = 0; 655 len++; 656 657 dig_port->write_infoframe(encoder, crtc_state, type, buffer, len); 658 } 659 660 void intel_read_infoframe(struct intel_encoder *encoder, 661 const struct intel_crtc_state *crtc_state, 662 enum hdmi_infoframe_type type, 663 union hdmi_infoframe *frame) 664 { 665 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 666 u8 buffer[VIDEO_DIP_DATA_SIZE]; 667 int ret; 668 669 if ((crtc_state->infoframes.enable & 670 intel_hdmi_infoframe_enable(type)) == 0) 671 return; 672 673 dig_port->read_infoframe(encoder, crtc_state, 674 type, buffer, sizeof(buffer)); 675 676 /* Fill the 'hole' (see big comment above) at position 3 */ 677 memmove(&buffer[1], &buffer[0], 3); 678 679 /* see comment above for the reason for this offset */ 680 ret = hdmi_infoframe_unpack(frame, buffer + 1, sizeof(buffer) - 1); 681 if (ret) { 682 drm_dbg_kms(encoder->base.dev, 683 "Failed to unpack infoframe type 0x%02x\n", type); 684 return; 685 } 686 687 if (frame->any.type != type) 688 drm_dbg_kms(encoder->base.dev, 689 "Found the wrong infoframe type 0x%x (expected 0x%02x)\n", 690 frame->any.type, type); 691 } 692 693 static bool 694 intel_hdmi_compute_avi_infoframe(struct intel_encoder *encoder, 695 struct intel_crtc_state *crtc_state, 696 struct drm_connector_state *conn_state) 697 { 698 struct hdmi_avi_infoframe *frame = &crtc_state->infoframes.avi.avi; 699 const struct drm_display_mode *adjusted_mode = 700 &crtc_state->hw.adjusted_mode; 701 struct drm_connector *connector = conn_state->connector; 702 int ret; 703 704 if (!crtc_state->has_infoframe) 705 return true; 706 707 crtc_state->infoframes.enable |= 708 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI); 709 710 ret = drm_hdmi_avi_infoframe_from_display_mode(frame, connector, 711 adjusted_mode); 712 if (ret) 713 return false; 714 715 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) 716 frame->colorspace = HDMI_COLORSPACE_YUV420; 717 else if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) 718 frame->colorspace = HDMI_COLORSPACE_YUV444; 719 else 720 frame->colorspace = HDMI_COLORSPACE_RGB; 721 722 drm_hdmi_avi_infoframe_colorimetry(frame, conn_state); 723 724 /* nonsense combination */ 725 drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range && 726 crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB); 727 728 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) { 729 drm_hdmi_avi_infoframe_quant_range(frame, connector, 730 adjusted_mode, 731 crtc_state->limited_color_range ? 732 HDMI_QUANTIZATION_RANGE_LIMITED : 733 HDMI_QUANTIZATION_RANGE_FULL); 734 } else { 735 frame->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT; 736 frame->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED; 737 } 738 739 drm_hdmi_avi_infoframe_content_type(frame, conn_state); 740 741 /* TODO: handle pixel repetition for YCBCR420 outputs */ 742 743 ret = hdmi_avi_infoframe_check(frame); 744 if (drm_WARN_ON(encoder->base.dev, ret)) 745 return false; 746 747 return true; 748 } 749 750 static bool 751 intel_hdmi_compute_spd_infoframe(struct intel_encoder *encoder, 752 struct intel_crtc_state *crtc_state, 753 struct drm_connector_state *conn_state) 754 { 755 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 756 struct hdmi_spd_infoframe *frame = &crtc_state->infoframes.spd.spd; 757 int ret; 758 759 if (!crtc_state->has_infoframe) 760 return true; 761 762 crtc_state->infoframes.enable |= 763 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD); 764 765 if (IS_DGFX(i915)) 766 ret = hdmi_spd_infoframe_init(frame, "Intel", "Discrete gfx"); 767 else 768 ret = hdmi_spd_infoframe_init(frame, "Intel", "Integrated gfx"); 769 770 if (drm_WARN_ON(encoder->base.dev, ret)) 771 return false; 772 773 frame->sdi = HDMI_SPD_SDI_PC; 774 775 ret = hdmi_spd_infoframe_check(frame); 776 if (drm_WARN_ON(encoder->base.dev, ret)) 777 return false; 778 779 return true; 780 } 781 782 static bool 783 intel_hdmi_compute_hdmi_infoframe(struct intel_encoder *encoder, 784 struct intel_crtc_state *crtc_state, 785 struct drm_connector_state *conn_state) 786 { 787 struct hdmi_vendor_infoframe *frame = 788 &crtc_state->infoframes.hdmi.vendor.hdmi; 789 const struct drm_display_info *info = 790 &conn_state->connector->display_info; 791 int ret; 792 793 if (!crtc_state->has_infoframe || !info->has_hdmi_infoframe) 794 return true; 795 796 crtc_state->infoframes.enable |= 797 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR); 798 799 ret = drm_hdmi_vendor_infoframe_from_display_mode(frame, 800 conn_state->connector, 801 &crtc_state->hw.adjusted_mode); 802 if (drm_WARN_ON(encoder->base.dev, ret)) 803 return false; 804 805 ret = hdmi_vendor_infoframe_check(frame); 806 if (drm_WARN_ON(encoder->base.dev, ret)) 807 return false; 808 809 return true; 810 } 811 812 static bool 813 intel_hdmi_compute_drm_infoframe(struct intel_encoder *encoder, 814 struct intel_crtc_state *crtc_state, 815 struct drm_connector_state *conn_state) 816 { 817 struct hdmi_drm_infoframe *frame = &crtc_state->infoframes.drm.drm; 818 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 819 int ret; 820 821 if (DISPLAY_VER(dev_priv) < 10) 822 return true; 823 824 if (!crtc_state->has_infoframe) 825 return true; 826 827 if (!conn_state->hdr_output_metadata) 828 return true; 829 830 crtc_state->infoframes.enable |= 831 intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM); 832 833 ret = drm_hdmi_infoframe_set_hdr_metadata(frame, conn_state); 834 if (ret < 0) { 835 drm_dbg_kms(&dev_priv->drm, 836 "couldn't set HDR metadata in infoframe\n"); 837 return false; 838 } 839 840 ret = hdmi_drm_infoframe_check(frame); 841 if (drm_WARN_ON(&dev_priv->drm, ret)) 842 return false; 843 844 return true; 845 } 846 847 static void g4x_set_infoframes(struct intel_encoder *encoder, 848 bool enable, 849 const struct intel_crtc_state *crtc_state, 850 const struct drm_connector_state *conn_state) 851 { 852 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 853 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 854 struct intel_hdmi *intel_hdmi = &dig_port->hdmi; 855 i915_reg_t reg = VIDEO_DIP_CTL; 856 u32 val = intel_de_read(dev_priv, reg); 857 u32 port = VIDEO_DIP_PORT(encoder->port); 858 859 assert_hdmi_port_disabled(intel_hdmi); 860 861 /* If the registers were not initialized yet, they might be zeroes, 862 * which means we're selecting the AVI DIP and we're setting its 863 * frequency to once. This seems to really confuse the HW and make 864 * things stop working (the register spec says the AVI always needs to 865 * be sent every VSync). So here we avoid writing to the register more 866 * than we need and also explicitly select the AVI DIP and explicitly 867 * set its frequency to every VSync. Avoiding to write it twice seems to 868 * be enough to solve the problem, but being defensive shouldn't hurt us 869 * either. */ 870 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC; 871 872 if (!enable) { 873 if (!(val & VIDEO_DIP_ENABLE)) 874 return; 875 if (port != (val & VIDEO_DIP_PORT_MASK)) { 876 drm_dbg_kms(&dev_priv->drm, 877 "video DIP still enabled on port %c\n", 878 (val & VIDEO_DIP_PORT_MASK) >> 29); 879 return; 880 } 881 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI | 882 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD); 883 intel_de_write(dev_priv, reg, val); 884 intel_de_posting_read(dev_priv, reg); 885 return; 886 } 887 888 if (port != (val & VIDEO_DIP_PORT_MASK)) { 889 if (val & VIDEO_DIP_ENABLE) { 890 drm_dbg_kms(&dev_priv->drm, 891 "video DIP already enabled on port %c\n", 892 (val & VIDEO_DIP_PORT_MASK) >> 29); 893 return; 894 } 895 val &= ~VIDEO_DIP_PORT_MASK; 896 val |= port; 897 } 898 899 val |= VIDEO_DIP_ENABLE; 900 val &= ~(VIDEO_DIP_ENABLE_AVI | 901 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD); 902 903 intel_de_write(dev_priv, reg, val); 904 intel_de_posting_read(dev_priv, reg); 905 906 intel_write_infoframe(encoder, crtc_state, 907 HDMI_INFOFRAME_TYPE_AVI, 908 &crtc_state->infoframes.avi); 909 intel_write_infoframe(encoder, crtc_state, 910 HDMI_INFOFRAME_TYPE_SPD, 911 &crtc_state->infoframes.spd); 912 intel_write_infoframe(encoder, crtc_state, 913 HDMI_INFOFRAME_TYPE_VENDOR, 914 &crtc_state->infoframes.hdmi); 915 } 916 917 /* 918 * Determine if default_phase=1 can be indicated in the GCP infoframe. 919 * 920 * From HDMI specification 1.4a: 921 * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0 922 * - The first pixel following each Video Data Period shall have a pixel packing phase of 0 923 * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase 924 * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing 925 * phase of 0 926 */ 927 static bool gcp_default_phase_possible(int pipe_bpp, 928 const struct drm_display_mode *mode) 929 { 930 unsigned int pixels_per_group; 931 932 switch (pipe_bpp) { 933 case 30: 934 /* 4 pixels in 5 clocks */ 935 pixels_per_group = 4; 936 break; 937 case 36: 938 /* 2 pixels in 3 clocks */ 939 pixels_per_group = 2; 940 break; 941 case 48: 942 /* 1 pixel in 2 clocks */ 943 pixels_per_group = 1; 944 break; 945 default: 946 /* phase information not relevant for 8bpc */ 947 return false; 948 } 949 950 return mode->crtc_hdisplay % pixels_per_group == 0 && 951 mode->crtc_htotal % pixels_per_group == 0 && 952 mode->crtc_hblank_start % pixels_per_group == 0 && 953 mode->crtc_hblank_end % pixels_per_group == 0 && 954 mode->crtc_hsync_start % pixels_per_group == 0 && 955 mode->crtc_hsync_end % pixels_per_group == 0 && 956 ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 || 957 mode->crtc_htotal/2 % pixels_per_group == 0); 958 } 959 960 static bool intel_hdmi_set_gcp_infoframe(struct intel_encoder *encoder, 961 const struct intel_crtc_state *crtc_state, 962 const struct drm_connector_state *conn_state) 963 { 964 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 965 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 966 i915_reg_t reg; 967 968 if ((crtc_state->infoframes.enable & 969 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0) 970 return false; 971 972 if (HAS_DDI(dev_priv)) 973 reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder); 974 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) 975 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe); 976 else if (HAS_PCH_SPLIT(dev_priv)) 977 reg = TVIDEO_DIP_GCP(crtc->pipe); 978 else 979 return false; 980 981 intel_de_write(dev_priv, reg, crtc_state->infoframes.gcp); 982 983 return true; 984 } 985 986 void intel_hdmi_read_gcp_infoframe(struct intel_encoder *encoder, 987 struct intel_crtc_state *crtc_state) 988 { 989 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 990 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 991 i915_reg_t reg; 992 993 if ((crtc_state->infoframes.enable & 994 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0) 995 return; 996 997 if (HAS_DDI(dev_priv)) 998 reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder); 999 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) 1000 reg = VLV_TVIDEO_DIP_GCP(crtc->pipe); 1001 else if (HAS_PCH_SPLIT(dev_priv)) 1002 reg = TVIDEO_DIP_GCP(crtc->pipe); 1003 else 1004 return; 1005 1006 crtc_state->infoframes.gcp = intel_de_read(dev_priv, reg); 1007 } 1008 1009 static void intel_hdmi_compute_gcp_infoframe(struct intel_encoder *encoder, 1010 struct intel_crtc_state *crtc_state, 1011 struct drm_connector_state *conn_state) 1012 { 1013 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1014 1015 if (IS_G4X(dev_priv) || !crtc_state->has_infoframe) 1016 return; 1017 1018 crtc_state->infoframes.enable |= 1019 intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL); 1020 1021 /* Indicate color indication for deep color mode */ 1022 if (crtc_state->pipe_bpp > 24) 1023 crtc_state->infoframes.gcp |= GCP_COLOR_INDICATION; 1024 1025 /* Enable default_phase whenever the display mode is suitably aligned */ 1026 if (gcp_default_phase_possible(crtc_state->pipe_bpp, 1027 &crtc_state->hw.adjusted_mode)) 1028 crtc_state->infoframes.gcp |= GCP_DEFAULT_PHASE_ENABLE; 1029 } 1030 1031 static void ibx_set_infoframes(struct intel_encoder *encoder, 1032 bool enable, 1033 const struct intel_crtc_state *crtc_state, 1034 const struct drm_connector_state *conn_state) 1035 { 1036 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1037 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1038 struct intel_digital_port *dig_port = enc_to_dig_port(encoder); 1039 struct intel_hdmi *intel_hdmi = &dig_port->hdmi; 1040 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe); 1041 u32 val = intel_de_read(dev_priv, reg); 1042 u32 port = VIDEO_DIP_PORT(encoder->port); 1043 1044 assert_hdmi_port_disabled(intel_hdmi); 1045 1046 /* See the big comment in g4x_set_infoframes() */ 1047 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC; 1048 1049 if (!enable) { 1050 if (!(val & VIDEO_DIP_ENABLE)) 1051 return; 1052 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI | 1053 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1054 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1055 intel_de_write(dev_priv, reg, val); 1056 intel_de_posting_read(dev_priv, reg); 1057 return; 1058 } 1059 1060 if (port != (val & VIDEO_DIP_PORT_MASK)) { 1061 drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE, 1062 "DIP already enabled on port %c\n", 1063 (val & VIDEO_DIP_PORT_MASK) >> 29); 1064 val &= ~VIDEO_DIP_PORT_MASK; 1065 val |= port; 1066 } 1067 1068 val |= VIDEO_DIP_ENABLE; 1069 val &= ~(VIDEO_DIP_ENABLE_AVI | 1070 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1071 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1072 1073 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state)) 1074 val |= VIDEO_DIP_ENABLE_GCP; 1075 1076 intel_de_write(dev_priv, reg, val); 1077 intel_de_posting_read(dev_priv, reg); 1078 1079 intel_write_infoframe(encoder, crtc_state, 1080 HDMI_INFOFRAME_TYPE_AVI, 1081 &crtc_state->infoframes.avi); 1082 intel_write_infoframe(encoder, crtc_state, 1083 HDMI_INFOFRAME_TYPE_SPD, 1084 &crtc_state->infoframes.spd); 1085 intel_write_infoframe(encoder, crtc_state, 1086 HDMI_INFOFRAME_TYPE_VENDOR, 1087 &crtc_state->infoframes.hdmi); 1088 } 1089 1090 static void cpt_set_infoframes(struct intel_encoder *encoder, 1091 bool enable, 1092 const struct intel_crtc_state *crtc_state, 1093 const struct drm_connector_state *conn_state) 1094 { 1095 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1096 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1097 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); 1098 i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe); 1099 u32 val = intel_de_read(dev_priv, reg); 1100 1101 assert_hdmi_port_disabled(intel_hdmi); 1102 1103 /* See the big comment in g4x_set_infoframes() */ 1104 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC; 1105 1106 if (!enable) { 1107 if (!(val & VIDEO_DIP_ENABLE)) 1108 return; 1109 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI | 1110 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1111 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1112 intel_de_write(dev_priv, reg, val); 1113 intel_de_posting_read(dev_priv, reg); 1114 return; 1115 } 1116 1117 /* Set both together, unset both together: see the spec. */ 1118 val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI; 1119 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1120 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1121 1122 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state)) 1123 val |= VIDEO_DIP_ENABLE_GCP; 1124 1125 intel_de_write(dev_priv, reg, val); 1126 intel_de_posting_read(dev_priv, reg); 1127 1128 intel_write_infoframe(encoder, crtc_state, 1129 HDMI_INFOFRAME_TYPE_AVI, 1130 &crtc_state->infoframes.avi); 1131 intel_write_infoframe(encoder, crtc_state, 1132 HDMI_INFOFRAME_TYPE_SPD, 1133 &crtc_state->infoframes.spd); 1134 intel_write_infoframe(encoder, crtc_state, 1135 HDMI_INFOFRAME_TYPE_VENDOR, 1136 &crtc_state->infoframes.hdmi); 1137 } 1138 1139 static void vlv_set_infoframes(struct intel_encoder *encoder, 1140 bool enable, 1141 const struct intel_crtc_state *crtc_state, 1142 const struct drm_connector_state *conn_state) 1143 { 1144 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1145 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 1146 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); 1147 i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe); 1148 u32 val = intel_de_read(dev_priv, reg); 1149 u32 port = VIDEO_DIP_PORT(encoder->port); 1150 1151 assert_hdmi_port_disabled(intel_hdmi); 1152 1153 /* See the big comment in g4x_set_infoframes() */ 1154 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC; 1155 1156 if (!enable) { 1157 if (!(val & VIDEO_DIP_ENABLE)) 1158 return; 1159 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI | 1160 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1161 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1162 intel_de_write(dev_priv, reg, val); 1163 intel_de_posting_read(dev_priv, reg); 1164 return; 1165 } 1166 1167 if (port != (val & VIDEO_DIP_PORT_MASK)) { 1168 drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE, 1169 "DIP already enabled on port %c\n", 1170 (val & VIDEO_DIP_PORT_MASK) >> 29); 1171 val &= ~VIDEO_DIP_PORT_MASK; 1172 val |= port; 1173 } 1174 1175 val |= VIDEO_DIP_ENABLE; 1176 val &= ~(VIDEO_DIP_ENABLE_AVI | 1177 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT | 1178 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP); 1179 1180 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state)) 1181 val |= VIDEO_DIP_ENABLE_GCP; 1182 1183 intel_de_write(dev_priv, reg, val); 1184 intel_de_posting_read(dev_priv, reg); 1185 1186 intel_write_infoframe(encoder, crtc_state, 1187 HDMI_INFOFRAME_TYPE_AVI, 1188 &crtc_state->infoframes.avi); 1189 intel_write_infoframe(encoder, crtc_state, 1190 HDMI_INFOFRAME_TYPE_SPD, 1191 &crtc_state->infoframes.spd); 1192 intel_write_infoframe(encoder, crtc_state, 1193 HDMI_INFOFRAME_TYPE_VENDOR, 1194 &crtc_state->infoframes.hdmi); 1195 } 1196 1197 static void hsw_set_infoframes(struct intel_encoder *encoder, 1198 bool enable, 1199 const struct intel_crtc_state *crtc_state, 1200 const struct drm_connector_state *conn_state) 1201 { 1202 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1203 i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder); 1204 u32 val = intel_de_read(dev_priv, reg); 1205 1206 assert_hdmi_transcoder_func_disabled(dev_priv, 1207 crtc_state->cpu_transcoder); 1208 1209 val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW | 1210 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW | 1211 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW | 1212 VIDEO_DIP_ENABLE_DRM_GLK); 1213 1214 if (!enable) { 1215 intel_de_write(dev_priv, reg, val); 1216 intel_de_posting_read(dev_priv, reg); 1217 return; 1218 } 1219 1220 if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state)) 1221 val |= VIDEO_DIP_ENABLE_GCP_HSW; 1222 1223 intel_de_write(dev_priv, reg, val); 1224 intel_de_posting_read(dev_priv, reg); 1225 1226 intel_write_infoframe(encoder, crtc_state, 1227 HDMI_INFOFRAME_TYPE_AVI, 1228 &crtc_state->infoframes.avi); 1229 intel_write_infoframe(encoder, crtc_state, 1230 HDMI_INFOFRAME_TYPE_SPD, 1231 &crtc_state->infoframes.spd); 1232 intel_write_infoframe(encoder, crtc_state, 1233 HDMI_INFOFRAME_TYPE_VENDOR, 1234 &crtc_state->infoframes.hdmi); 1235 intel_write_infoframe(encoder, crtc_state, 1236 HDMI_INFOFRAME_TYPE_DRM, 1237 &crtc_state->infoframes.drm); 1238 } 1239 1240 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable) 1241 { 1242 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi); 1243 struct i2c_adapter *adapter; 1244 1245 if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI) 1246 return; 1247 1248 adapter = intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus); 1249 1250 drm_dbg_kms(&dev_priv->drm, "%s DP dual mode adaptor TMDS output\n", 1251 enable ? "Enabling" : "Disabling"); 1252 1253 drm_dp_dual_mode_set_tmds_output(&dev_priv->drm, hdmi->dp_dual_mode.type, adapter, enable); 1254 } 1255 1256 static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port, 1257 unsigned int offset, void *buffer, size_t size) 1258 { 1259 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1260 struct intel_hdmi *hdmi = &dig_port->hdmi; 1261 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915, 1262 hdmi->ddc_bus); 1263 int ret; 1264 u8 start = offset & 0xff; 1265 struct i2c_msg msgs[] = { 1266 { 1267 .addr = DRM_HDCP_DDC_ADDR, 1268 .flags = 0, 1269 .len = 1, 1270 .buf = &start, 1271 }, 1272 { 1273 .addr = DRM_HDCP_DDC_ADDR, 1274 .flags = I2C_M_RD, 1275 .len = size, 1276 .buf = buffer 1277 } 1278 }; 1279 ret = i2c_transfer(adapter, msgs, ARRAY_SIZE(msgs)); 1280 if (ret == ARRAY_SIZE(msgs)) 1281 return 0; 1282 return ret >= 0 ? -EIO : ret; 1283 } 1284 1285 static int intel_hdmi_hdcp_write(struct intel_digital_port *dig_port, 1286 unsigned int offset, void *buffer, size_t size) 1287 { 1288 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1289 struct intel_hdmi *hdmi = &dig_port->hdmi; 1290 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915, 1291 hdmi->ddc_bus); 1292 int ret; 1293 u8 *write_buf; 1294 struct i2c_msg msg; 1295 1296 write_buf = kzalloc(size + 1, GFP_KERNEL); 1297 if (!write_buf) 1298 return -ENOMEM; 1299 1300 write_buf[0] = offset & 0xff; 1301 memcpy(&write_buf[1], buffer, size); 1302 1303 msg.addr = DRM_HDCP_DDC_ADDR; 1304 msg.flags = 0, 1305 msg.len = size + 1, 1306 msg.buf = write_buf; 1307 1308 ret = i2c_transfer(adapter, &msg, 1); 1309 if (ret == 1) 1310 ret = 0; 1311 else if (ret >= 0) 1312 ret = -EIO; 1313 1314 kfree(write_buf); 1315 return ret; 1316 } 1317 1318 static 1319 int intel_hdmi_hdcp_write_an_aksv(struct intel_digital_port *dig_port, 1320 u8 *an) 1321 { 1322 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1323 struct intel_hdmi *hdmi = &dig_port->hdmi; 1324 struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915, 1325 hdmi->ddc_bus); 1326 int ret; 1327 1328 ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, an, 1329 DRM_HDCP_AN_LEN); 1330 if (ret) { 1331 drm_dbg_kms(&i915->drm, "Write An over DDC failed (%d)\n", 1332 ret); 1333 return ret; 1334 } 1335 1336 ret = intel_gmbus_output_aksv(adapter); 1337 if (ret < 0) { 1338 drm_dbg_kms(&i915->drm, "Failed to output aksv (%d)\n", ret); 1339 return ret; 1340 } 1341 return 0; 1342 } 1343 1344 static int intel_hdmi_hdcp_read_bksv(struct intel_digital_port *dig_port, 1345 u8 *bksv) 1346 { 1347 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1348 1349 int ret; 1350 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BKSV, bksv, 1351 DRM_HDCP_KSV_LEN); 1352 if (ret) 1353 drm_dbg_kms(&i915->drm, "Read Bksv over DDC failed (%d)\n", 1354 ret); 1355 return ret; 1356 } 1357 1358 static 1359 int intel_hdmi_hdcp_read_bstatus(struct intel_digital_port *dig_port, 1360 u8 *bstatus) 1361 { 1362 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1363 1364 int ret; 1365 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BSTATUS, 1366 bstatus, DRM_HDCP_BSTATUS_LEN); 1367 if (ret) 1368 drm_dbg_kms(&i915->drm, "Read bstatus over DDC failed (%d)\n", 1369 ret); 1370 return ret; 1371 } 1372 1373 static 1374 int intel_hdmi_hdcp_repeater_present(struct intel_digital_port *dig_port, 1375 bool *repeater_present) 1376 { 1377 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1378 int ret; 1379 u8 val; 1380 1381 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1); 1382 if (ret) { 1383 drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n", 1384 ret); 1385 return ret; 1386 } 1387 *repeater_present = val & DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT; 1388 return 0; 1389 } 1390 1391 static 1392 int intel_hdmi_hdcp_read_ri_prime(struct intel_digital_port *dig_port, 1393 u8 *ri_prime) 1394 { 1395 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1396 1397 int ret; 1398 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_RI_PRIME, 1399 ri_prime, DRM_HDCP_RI_LEN); 1400 if (ret) 1401 drm_dbg_kms(&i915->drm, "Read Ri' over DDC failed (%d)\n", 1402 ret); 1403 return ret; 1404 } 1405 1406 static 1407 int intel_hdmi_hdcp_read_ksv_ready(struct intel_digital_port *dig_port, 1408 bool *ksv_ready) 1409 { 1410 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1411 int ret; 1412 u8 val; 1413 1414 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1); 1415 if (ret) { 1416 drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n", 1417 ret); 1418 return ret; 1419 } 1420 *ksv_ready = val & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY; 1421 return 0; 1422 } 1423 1424 static 1425 int intel_hdmi_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port, 1426 int num_downstream, u8 *ksv_fifo) 1427 { 1428 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1429 int ret; 1430 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_KSV_FIFO, 1431 ksv_fifo, num_downstream * DRM_HDCP_KSV_LEN); 1432 if (ret) { 1433 drm_dbg_kms(&i915->drm, 1434 "Read ksv fifo over DDC failed (%d)\n", ret); 1435 return ret; 1436 } 1437 return 0; 1438 } 1439 1440 static 1441 int intel_hdmi_hdcp_read_v_prime_part(struct intel_digital_port *dig_port, 1442 int i, u32 *part) 1443 { 1444 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1445 int ret; 1446 1447 if (i >= DRM_HDCP_V_PRIME_NUM_PARTS) 1448 return -EINVAL; 1449 1450 ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_V_PRIME(i), 1451 part, DRM_HDCP_V_PRIME_PART_LEN); 1452 if (ret) 1453 drm_dbg_kms(&i915->drm, "Read V'[%d] over DDC failed (%d)\n", 1454 i, ret); 1455 return ret; 1456 } 1457 1458 static int kbl_repositioning_enc_en_signal(struct intel_connector *connector, 1459 enum transcoder cpu_transcoder) 1460 { 1461 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 1462 struct intel_digital_port *dig_port = intel_attached_dig_port(connector); 1463 struct intel_crtc *crtc = to_intel_crtc(connector->base.state->crtc); 1464 u32 scanline; 1465 int ret; 1466 1467 for (;;) { 1468 scanline = intel_de_read(dev_priv, PIPEDSL(crtc->pipe)); 1469 if (scanline > 100 && scanline < 200) 1470 break; 1471 usleep_range(25, 50); 1472 } 1473 1474 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder, 1475 false, TRANS_DDI_HDCP_SIGNALLING); 1476 if (ret) { 1477 drm_err(&dev_priv->drm, 1478 "Disable HDCP signalling failed (%d)\n", ret); 1479 return ret; 1480 } 1481 1482 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder, 1483 true, TRANS_DDI_HDCP_SIGNALLING); 1484 if (ret) { 1485 drm_err(&dev_priv->drm, 1486 "Enable HDCP signalling failed (%d)\n", ret); 1487 return ret; 1488 } 1489 1490 return 0; 1491 } 1492 1493 static 1494 int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *dig_port, 1495 enum transcoder cpu_transcoder, 1496 bool enable) 1497 { 1498 struct intel_hdmi *hdmi = &dig_port->hdmi; 1499 struct intel_connector *connector = hdmi->attached_connector; 1500 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 1501 int ret; 1502 1503 if (!enable) 1504 usleep_range(6, 60); /* Bspec says >= 6us */ 1505 1506 ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, 1507 cpu_transcoder, enable, 1508 TRANS_DDI_HDCP_SIGNALLING); 1509 if (ret) { 1510 drm_err(&dev_priv->drm, "%s HDCP signalling failed (%d)\n", 1511 enable ? "Enable" : "Disable", ret); 1512 return ret; 1513 } 1514 1515 /* 1516 * WA: To fix incorrect positioning of the window of 1517 * opportunity and enc_en signalling in KABYLAKE. 1518 */ 1519 if (IS_KABYLAKE(dev_priv) && enable) 1520 return kbl_repositioning_enc_en_signal(connector, 1521 cpu_transcoder); 1522 1523 return 0; 1524 } 1525 1526 static 1527 bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port *dig_port, 1528 struct intel_connector *connector) 1529 { 1530 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1531 enum port port = dig_port->base.port; 1532 enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder; 1533 int ret; 1534 union { 1535 u32 reg; 1536 u8 shim[DRM_HDCP_RI_LEN]; 1537 } ri; 1538 1539 ret = intel_hdmi_hdcp_read_ri_prime(dig_port, ri.shim); 1540 if (ret) 1541 return false; 1542 1543 intel_de_write(i915, HDCP_RPRIME(i915, cpu_transcoder, port), ri.reg); 1544 1545 /* Wait for Ri prime match */ 1546 if (wait_for((intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) & 1547 (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC)) == 1548 (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) { 1549 drm_dbg_kms(&i915->drm, "Ri' mismatch detected (%x)\n", 1550 intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, 1551 port))); 1552 return false; 1553 } 1554 return true; 1555 } 1556 1557 static 1558 bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port, 1559 struct intel_connector *connector) 1560 { 1561 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1562 int retry; 1563 1564 for (retry = 0; retry < 3; retry++) 1565 if (intel_hdmi_hdcp_check_link_once(dig_port, connector)) 1566 return true; 1567 1568 drm_err(&i915->drm, "Link check failed\n"); 1569 return false; 1570 } 1571 1572 struct hdcp2_hdmi_msg_timeout { 1573 u8 msg_id; 1574 u16 timeout; 1575 }; 1576 1577 static const struct hdcp2_hdmi_msg_timeout hdcp2_msg_timeout[] = { 1578 { HDCP_2_2_AKE_SEND_CERT, HDCP_2_2_CERT_TIMEOUT_MS, }, 1579 { HDCP_2_2_AKE_SEND_PAIRING_INFO, HDCP_2_2_PAIRING_TIMEOUT_MS, }, 1580 { HDCP_2_2_LC_SEND_LPRIME, HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS, }, 1581 { HDCP_2_2_REP_SEND_RECVID_LIST, HDCP_2_2_RECVID_LIST_TIMEOUT_MS, }, 1582 { HDCP_2_2_REP_STREAM_READY, HDCP_2_2_STREAM_READY_TIMEOUT_MS, }, 1583 }; 1584 1585 static 1586 int intel_hdmi_hdcp2_read_rx_status(struct intel_digital_port *dig_port, 1587 u8 *rx_status) 1588 { 1589 return intel_hdmi_hdcp_read(dig_port, 1590 HDCP_2_2_HDMI_REG_RXSTATUS_OFFSET, 1591 rx_status, 1592 HDCP_2_2_HDMI_RXSTATUS_LEN); 1593 } 1594 1595 static int get_hdcp2_msg_timeout(u8 msg_id, bool is_paired) 1596 { 1597 int i; 1598 1599 if (msg_id == HDCP_2_2_AKE_SEND_HPRIME) { 1600 if (is_paired) 1601 return HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS; 1602 else 1603 return HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS; 1604 } 1605 1606 for (i = 0; i < ARRAY_SIZE(hdcp2_msg_timeout); i++) { 1607 if (hdcp2_msg_timeout[i].msg_id == msg_id) 1608 return hdcp2_msg_timeout[i].timeout; 1609 } 1610 1611 return -EINVAL; 1612 } 1613 1614 static int 1615 hdcp2_detect_msg_availability(struct intel_digital_port *dig_port, 1616 u8 msg_id, bool *msg_ready, 1617 ssize_t *msg_sz) 1618 { 1619 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1620 u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN]; 1621 int ret; 1622 1623 ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status); 1624 if (ret < 0) { 1625 drm_dbg_kms(&i915->drm, "rx_status read failed. Err %d\n", 1626 ret); 1627 return ret; 1628 } 1629 1630 *msg_sz = ((HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(rx_status[1]) << 8) | 1631 rx_status[0]); 1632 1633 if (msg_id == HDCP_2_2_REP_SEND_RECVID_LIST) 1634 *msg_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1]) && 1635 *msg_sz); 1636 else 1637 *msg_ready = *msg_sz; 1638 1639 return 0; 1640 } 1641 1642 static ssize_t 1643 intel_hdmi_hdcp2_wait_for_msg(struct intel_digital_port *dig_port, 1644 u8 msg_id, bool paired) 1645 { 1646 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1647 bool msg_ready = false; 1648 int timeout, ret; 1649 ssize_t msg_sz = 0; 1650 1651 timeout = get_hdcp2_msg_timeout(msg_id, paired); 1652 if (timeout < 0) 1653 return timeout; 1654 1655 ret = __wait_for(ret = hdcp2_detect_msg_availability(dig_port, 1656 msg_id, &msg_ready, 1657 &msg_sz), 1658 !ret && msg_ready && msg_sz, timeout * 1000, 1659 1000, 5 * 1000); 1660 if (ret) 1661 drm_dbg_kms(&i915->drm, "msg_id: %d, ret: %d, timeout: %d\n", 1662 msg_id, ret, timeout); 1663 1664 return ret ? ret : msg_sz; 1665 } 1666 1667 static 1668 int intel_hdmi_hdcp2_write_msg(struct intel_digital_port *dig_port, 1669 void *buf, size_t size) 1670 { 1671 unsigned int offset; 1672 1673 offset = HDCP_2_2_HDMI_REG_WR_MSG_OFFSET; 1674 return intel_hdmi_hdcp_write(dig_port, offset, buf, size); 1675 } 1676 1677 static 1678 int intel_hdmi_hdcp2_read_msg(struct intel_digital_port *dig_port, 1679 u8 msg_id, void *buf, size_t size) 1680 { 1681 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 1682 struct intel_hdmi *hdmi = &dig_port->hdmi; 1683 struct intel_hdcp *hdcp = &hdmi->attached_connector->hdcp; 1684 unsigned int offset; 1685 ssize_t ret; 1686 1687 ret = intel_hdmi_hdcp2_wait_for_msg(dig_port, msg_id, 1688 hdcp->is_paired); 1689 if (ret < 0) 1690 return ret; 1691 1692 /* 1693 * Available msg size should be equal to or lesser than the 1694 * available buffer. 1695 */ 1696 if (ret > size) { 1697 drm_dbg_kms(&i915->drm, 1698 "msg_sz(%zd) is more than exp size(%zu)\n", 1699 ret, size); 1700 return -EINVAL; 1701 } 1702 1703 offset = HDCP_2_2_HDMI_REG_RD_MSG_OFFSET; 1704 ret = intel_hdmi_hdcp_read(dig_port, offset, buf, ret); 1705 if (ret) 1706 drm_dbg_kms(&i915->drm, "Failed to read msg_id: %d(%zd)\n", 1707 msg_id, ret); 1708 1709 return ret; 1710 } 1711 1712 static 1713 int intel_hdmi_hdcp2_check_link(struct intel_digital_port *dig_port, 1714 struct intel_connector *connector) 1715 { 1716 u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN]; 1717 int ret; 1718 1719 ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status); 1720 if (ret) 1721 return ret; 1722 1723 /* 1724 * Re-auth request and Link Integrity Failures are represented by 1725 * same bit. i.e reauth_req. 1726 */ 1727 if (HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(rx_status[1])) 1728 ret = HDCP_REAUTH_REQUEST; 1729 else if (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1])) 1730 ret = HDCP_TOPOLOGY_CHANGE; 1731 1732 return ret; 1733 } 1734 1735 static 1736 int intel_hdmi_hdcp2_capable(struct intel_digital_port *dig_port, 1737 bool *capable) 1738 { 1739 u8 hdcp2_version; 1740 int ret; 1741 1742 *capable = false; 1743 ret = intel_hdmi_hdcp_read(dig_port, HDCP_2_2_HDMI_REG_VER_OFFSET, 1744 &hdcp2_version, sizeof(hdcp2_version)); 1745 if (!ret && hdcp2_version & HDCP_2_2_HDMI_SUPPORT_MASK) 1746 *capable = true; 1747 1748 return ret; 1749 } 1750 1751 static const struct intel_hdcp_shim intel_hdmi_hdcp_shim = { 1752 .write_an_aksv = intel_hdmi_hdcp_write_an_aksv, 1753 .read_bksv = intel_hdmi_hdcp_read_bksv, 1754 .read_bstatus = intel_hdmi_hdcp_read_bstatus, 1755 .repeater_present = intel_hdmi_hdcp_repeater_present, 1756 .read_ri_prime = intel_hdmi_hdcp_read_ri_prime, 1757 .read_ksv_ready = intel_hdmi_hdcp_read_ksv_ready, 1758 .read_ksv_fifo = intel_hdmi_hdcp_read_ksv_fifo, 1759 .read_v_prime_part = intel_hdmi_hdcp_read_v_prime_part, 1760 .toggle_signalling = intel_hdmi_hdcp_toggle_signalling, 1761 .check_link = intel_hdmi_hdcp_check_link, 1762 .write_2_2_msg = intel_hdmi_hdcp2_write_msg, 1763 .read_2_2_msg = intel_hdmi_hdcp2_read_msg, 1764 .check_2_2_link = intel_hdmi_hdcp2_check_link, 1765 .hdcp_2_2_capable = intel_hdmi_hdcp2_capable, 1766 .protocol = HDCP_PROTOCOL_HDMI, 1767 }; 1768 1769 static int intel_hdmi_source_max_tmds_clock(struct intel_encoder *encoder) 1770 { 1771 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1772 int max_tmds_clock, vbt_max_tmds_clock; 1773 1774 if (DISPLAY_VER(dev_priv) >= 10) 1775 max_tmds_clock = 594000; 1776 else if (DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv)) 1777 max_tmds_clock = 300000; 1778 else if (DISPLAY_VER(dev_priv) >= 5) 1779 max_tmds_clock = 225000; 1780 else 1781 max_tmds_clock = 165000; 1782 1783 vbt_max_tmds_clock = intel_bios_hdmi_max_tmds_clock(encoder->devdata); 1784 if (vbt_max_tmds_clock) 1785 max_tmds_clock = min(max_tmds_clock, vbt_max_tmds_clock); 1786 1787 return max_tmds_clock; 1788 } 1789 1790 static bool intel_has_hdmi_sink(struct intel_hdmi *hdmi, 1791 const struct drm_connector_state *conn_state) 1792 { 1793 struct intel_connector *connector = hdmi->attached_connector; 1794 1795 return connector->base.display_info.is_hdmi && 1796 READ_ONCE(to_intel_digital_connector_state(conn_state)->force_audio) != HDMI_AUDIO_OFF_DVI; 1797 } 1798 1799 static bool intel_hdmi_is_ycbcr420(const struct intel_crtc_state *crtc_state) 1800 { 1801 return crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420; 1802 } 1803 1804 static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, 1805 bool respect_downstream_limits, 1806 bool has_hdmi_sink) 1807 { 1808 struct intel_encoder *encoder = &hdmi_to_dig_port(hdmi)->base; 1809 int max_tmds_clock = intel_hdmi_source_max_tmds_clock(encoder); 1810 1811 if (respect_downstream_limits) { 1812 struct intel_connector *connector = hdmi->attached_connector; 1813 const struct drm_display_info *info = &connector->base.display_info; 1814 1815 if (hdmi->dp_dual_mode.max_tmds_clock) 1816 max_tmds_clock = min(max_tmds_clock, 1817 hdmi->dp_dual_mode.max_tmds_clock); 1818 1819 if (info->max_tmds_clock) 1820 max_tmds_clock = min(max_tmds_clock, 1821 info->max_tmds_clock); 1822 else if (!has_hdmi_sink) 1823 max_tmds_clock = min(max_tmds_clock, 165000); 1824 } 1825 1826 return max_tmds_clock; 1827 } 1828 1829 static enum drm_mode_status 1830 hdmi_port_clock_valid(struct intel_hdmi *hdmi, 1831 int clock, bool respect_downstream_limits, 1832 bool has_hdmi_sink) 1833 { 1834 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi); 1835 enum phy phy = intel_port_to_phy(dev_priv, hdmi_to_dig_port(hdmi)->base.port); 1836 1837 if (clock < 25000) 1838 return MODE_CLOCK_LOW; 1839 if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits, 1840 has_hdmi_sink)) 1841 return MODE_CLOCK_HIGH; 1842 1843 /* GLK DPLL can't generate 446-480 MHz */ 1844 if (IS_GEMINILAKE(dev_priv) && clock > 446666 && clock < 480000) 1845 return MODE_CLOCK_RANGE; 1846 1847 /* BXT/GLK DPLL can't generate 223-240 MHz */ 1848 if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) && 1849 clock > 223333 && clock < 240000) 1850 return MODE_CLOCK_RANGE; 1851 1852 /* CHV DPLL can't generate 216-240 MHz */ 1853 if (IS_CHERRYVIEW(dev_priv) && clock > 216000 && clock < 240000) 1854 return MODE_CLOCK_RANGE; 1855 1856 /* ICL+ combo PHY PLL can't generate 500-533.2 MHz */ 1857 if (intel_phy_is_combo(dev_priv, phy) && clock > 500000 && clock < 533200) 1858 return MODE_CLOCK_RANGE; 1859 1860 /* ICL+ TC PHY PLL can't generate 500-532.8 MHz */ 1861 if (intel_phy_is_tc(dev_priv, phy) && clock > 500000 && clock < 532800) 1862 return MODE_CLOCK_RANGE; 1863 1864 /* 1865 * SNPS PHYs' MPLLB table-based programming can only handle a fixed 1866 * set of link rates. 1867 * 1868 * FIXME: We will hopefully get an algorithmic way of programming 1869 * the MPLLB for HDMI in the future. 1870 */ 1871 if (DISPLAY_VER(dev_priv) >= 14) 1872 return intel_cx0_phy_check_hdmi_link_rate(hdmi, clock); 1873 else if (IS_DG2(dev_priv)) 1874 return intel_snps_phy_check_hdmi_link_rate(clock); 1875 1876 return MODE_OK; 1877 } 1878 1879 int intel_hdmi_tmds_clock(int clock, int bpc, 1880 enum intel_output_format sink_format) 1881 { 1882 /* YCBCR420 TMDS rate requirement is half the pixel clock */ 1883 if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) 1884 clock /= 2; 1885 1886 /* 1887 * Need to adjust the port link by: 1888 * 1.5x for 12bpc 1889 * 1.25x for 10bpc 1890 */ 1891 return DIV_ROUND_CLOSEST(clock * bpc, 8); 1892 } 1893 1894 static bool intel_hdmi_source_bpc_possible(struct drm_i915_private *i915, int bpc) 1895 { 1896 switch (bpc) { 1897 case 12: 1898 return !HAS_GMCH(i915); 1899 case 10: 1900 return DISPLAY_VER(i915) >= 11; 1901 case 8: 1902 return true; 1903 default: 1904 MISSING_CASE(bpc); 1905 return false; 1906 } 1907 } 1908 1909 static bool intel_hdmi_sink_bpc_possible(struct drm_connector *connector, 1910 int bpc, bool has_hdmi_sink, 1911 enum intel_output_format sink_format) 1912 { 1913 const struct drm_display_info *info = &connector->display_info; 1914 const struct drm_hdmi_info *hdmi = &info->hdmi; 1915 1916 switch (bpc) { 1917 case 12: 1918 if (!has_hdmi_sink) 1919 return false; 1920 1921 if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) 1922 return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_36; 1923 else 1924 return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36; 1925 case 10: 1926 if (!has_hdmi_sink) 1927 return false; 1928 1929 if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) 1930 return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_30; 1931 else 1932 return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30; 1933 case 8: 1934 return true; 1935 default: 1936 MISSING_CASE(bpc); 1937 return false; 1938 } 1939 } 1940 1941 static enum drm_mode_status 1942 intel_hdmi_mode_clock_valid(struct drm_connector *connector, int clock, 1943 bool has_hdmi_sink, 1944 enum intel_output_format sink_format) 1945 { 1946 struct drm_i915_private *i915 = to_i915(connector->dev); 1947 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector)); 1948 enum drm_mode_status status = MODE_OK; 1949 int bpc; 1950 1951 /* 1952 * Try all color depths since valid port clock range 1953 * can have holes. Any mode that can be used with at 1954 * least one color depth is accepted. 1955 */ 1956 for (bpc = 12; bpc >= 8; bpc -= 2) { 1957 int tmds_clock = intel_hdmi_tmds_clock(clock, bpc, sink_format); 1958 1959 if (!intel_hdmi_source_bpc_possible(i915, bpc)) 1960 continue; 1961 1962 if (!intel_hdmi_sink_bpc_possible(connector, bpc, has_hdmi_sink, sink_format)) 1963 continue; 1964 1965 status = hdmi_port_clock_valid(hdmi, tmds_clock, true, has_hdmi_sink); 1966 if (status == MODE_OK) 1967 return MODE_OK; 1968 } 1969 1970 /* can never happen */ 1971 drm_WARN_ON(&i915->drm, status == MODE_OK); 1972 1973 return status; 1974 } 1975 1976 static enum drm_mode_status 1977 intel_hdmi_mode_valid(struct drm_connector *connector, 1978 struct drm_display_mode *mode) 1979 { 1980 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector)); 1981 struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi); 1982 enum drm_mode_status status; 1983 int clock = mode->clock; 1984 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; 1985 bool has_hdmi_sink = intel_has_hdmi_sink(hdmi, connector->state); 1986 bool ycbcr_420_only; 1987 enum intel_output_format sink_format; 1988 1989 if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING) 1990 clock *= 2; 1991 1992 if (clock > max_dotclk) 1993 return MODE_CLOCK_HIGH; 1994 1995 if (mode->flags & DRM_MODE_FLAG_DBLCLK) { 1996 if (!has_hdmi_sink) 1997 return MODE_CLOCK_LOW; 1998 clock *= 2; 1999 } 2000 2001 /* 2002 * HDMI2.1 requires higher resolution modes like 8k60, 4K120 to be 2003 * enumerated only if FRL is supported. Current platforms do not support 2004 * FRL so prune the higher resolution modes that require doctclock more 2005 * than 600MHz. 2006 */ 2007 if (clock > 600000) 2008 return MODE_CLOCK_HIGH; 2009 2010 ycbcr_420_only = drm_mode_is_420_only(&connector->display_info, mode); 2011 2012 if (ycbcr_420_only) 2013 sink_format = INTEL_OUTPUT_FORMAT_YCBCR420; 2014 else 2015 sink_format = INTEL_OUTPUT_FORMAT_RGB; 2016 2017 status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, sink_format); 2018 if (status != MODE_OK) { 2019 if (ycbcr_420_only || 2020 !connector->ycbcr_420_allowed || 2021 !drm_mode_is_420_also(&connector->display_info, mode)) 2022 return status; 2023 2024 sink_format = INTEL_OUTPUT_FORMAT_YCBCR420; 2025 status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, sink_format); 2026 if (status != MODE_OK) 2027 return status; 2028 } 2029 2030 return intel_mode_valid_max_plane_size(dev_priv, mode, false); 2031 } 2032 2033 bool intel_hdmi_bpc_possible(const struct intel_crtc_state *crtc_state, 2034 int bpc, bool has_hdmi_sink) 2035 { 2036 struct drm_atomic_state *state = crtc_state->uapi.state; 2037 struct drm_connector_state *connector_state; 2038 struct drm_connector *connector; 2039 int i; 2040 2041 for_each_new_connector_in_state(state, connector, connector_state, i) { 2042 if (connector_state->crtc != crtc_state->uapi.crtc) 2043 continue; 2044 2045 if (!intel_hdmi_sink_bpc_possible(connector, bpc, has_hdmi_sink, 2046 crtc_state->sink_format)) 2047 return false; 2048 } 2049 2050 return true; 2051 } 2052 2053 static bool hdmi_bpc_possible(const struct intel_crtc_state *crtc_state, int bpc) 2054 { 2055 struct drm_i915_private *dev_priv = 2056 to_i915(crtc_state->uapi.crtc->dev); 2057 const struct drm_display_mode *adjusted_mode = 2058 &crtc_state->hw.adjusted_mode; 2059 2060 if (!intel_hdmi_source_bpc_possible(dev_priv, bpc)) 2061 return false; 2062 2063 /* Display Wa_1405510057:icl,ehl */ 2064 if (intel_hdmi_is_ycbcr420(crtc_state) && 2065 bpc == 10 && DISPLAY_VER(dev_priv) == 11 && 2066 (adjusted_mode->crtc_hblank_end - 2067 adjusted_mode->crtc_hblank_start) % 8 == 2) 2068 return false; 2069 2070 return intel_hdmi_bpc_possible(crtc_state, bpc, crtc_state->has_hdmi_sink); 2071 } 2072 2073 static int intel_hdmi_compute_bpc(struct intel_encoder *encoder, 2074 struct intel_crtc_state *crtc_state, 2075 int clock, bool respect_downstream_limits) 2076 { 2077 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); 2078 int bpc; 2079 2080 /* 2081 * pipe_bpp could already be below 8bpc due to FDI 2082 * bandwidth constraints. HDMI minimum is 8bpc however. 2083 */ 2084 bpc = max(crtc_state->pipe_bpp / 3, 8); 2085 2086 /* 2087 * We will never exceed downstream TMDS clock limits while 2088 * attempting deep color. If the user insists on forcing an 2089 * out of spec mode they will have to be satisfied with 8bpc. 2090 */ 2091 if (!respect_downstream_limits) 2092 bpc = 8; 2093 2094 for (; bpc >= 8; bpc -= 2) { 2095 int tmds_clock = intel_hdmi_tmds_clock(clock, bpc, 2096 crtc_state->sink_format); 2097 2098 if (hdmi_bpc_possible(crtc_state, bpc) && 2099 hdmi_port_clock_valid(intel_hdmi, tmds_clock, 2100 respect_downstream_limits, 2101 crtc_state->has_hdmi_sink) == MODE_OK) 2102 return bpc; 2103 } 2104 2105 return -EINVAL; 2106 } 2107 2108 static int intel_hdmi_compute_clock(struct intel_encoder *encoder, 2109 struct intel_crtc_state *crtc_state, 2110 bool respect_downstream_limits) 2111 { 2112 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 2113 const struct drm_display_mode *adjusted_mode = 2114 &crtc_state->hw.adjusted_mode; 2115 int bpc, clock = adjusted_mode->crtc_clock; 2116 2117 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) 2118 clock *= 2; 2119 2120 bpc = intel_hdmi_compute_bpc(encoder, crtc_state, clock, 2121 respect_downstream_limits); 2122 if (bpc < 0) 2123 return bpc; 2124 2125 crtc_state->port_clock = 2126 intel_hdmi_tmds_clock(clock, bpc, crtc_state->sink_format); 2127 2128 /* 2129 * pipe_bpp could already be below 8bpc due to 2130 * FDI bandwidth constraints. We shouldn't bump it 2131 * back up to the HDMI minimum 8bpc in that case. 2132 */ 2133 crtc_state->pipe_bpp = min(crtc_state->pipe_bpp, bpc * 3); 2134 2135 drm_dbg_kms(&i915->drm, 2136 "picking %d bpc for HDMI output (pipe bpp: %d)\n", 2137 bpc, crtc_state->pipe_bpp); 2138 2139 return 0; 2140 } 2141 2142 bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state, 2143 const struct drm_connector_state *conn_state) 2144 { 2145 const struct intel_digital_connector_state *intel_conn_state = 2146 to_intel_digital_connector_state(conn_state); 2147 const struct drm_display_mode *adjusted_mode = 2148 &crtc_state->hw.adjusted_mode; 2149 2150 /* 2151 * Our YCbCr output is always limited range. 2152 * crtc_state->limited_color_range only applies to RGB, 2153 * and it must never be set for YCbCr or we risk setting 2154 * some conflicting bits in TRANSCONF which will mess up 2155 * the colors on the monitor. 2156 */ 2157 if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB) 2158 return false; 2159 2160 if (intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_AUTO) { 2161 /* See CEA-861-E - 5.1 Default Encoding Parameters */ 2162 return crtc_state->has_hdmi_sink && 2163 drm_default_rgb_quant_range(adjusted_mode) == 2164 HDMI_QUANTIZATION_RANGE_LIMITED; 2165 } else { 2166 return intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_LIMITED; 2167 } 2168 } 2169 2170 static bool intel_hdmi_has_audio(struct intel_encoder *encoder, 2171 const struct intel_crtc_state *crtc_state, 2172 const struct drm_connector_state *conn_state) 2173 { 2174 struct drm_connector *connector = conn_state->connector; 2175 const struct intel_digital_connector_state *intel_conn_state = 2176 to_intel_digital_connector_state(conn_state); 2177 2178 if (!crtc_state->has_hdmi_sink) 2179 return false; 2180 2181 if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO) 2182 return connector->display_info.has_audio; 2183 else 2184 return intel_conn_state->force_audio == HDMI_AUDIO_ON; 2185 } 2186 2187 static enum intel_output_format 2188 intel_hdmi_sink_format(const struct intel_crtc_state *crtc_state, 2189 struct intel_connector *connector, 2190 bool ycbcr_420_output) 2191 { 2192 if (!crtc_state->has_hdmi_sink) 2193 return INTEL_OUTPUT_FORMAT_RGB; 2194 2195 if (connector->base.ycbcr_420_allowed && ycbcr_420_output) 2196 return INTEL_OUTPUT_FORMAT_YCBCR420; 2197 else 2198 return INTEL_OUTPUT_FORMAT_RGB; 2199 } 2200 2201 static enum intel_output_format 2202 intel_hdmi_output_format(const struct intel_crtc_state *crtc_state) 2203 { 2204 return crtc_state->sink_format; 2205 } 2206 2207 static int intel_hdmi_compute_output_format(struct intel_encoder *encoder, 2208 struct intel_crtc_state *crtc_state, 2209 const struct drm_connector_state *conn_state, 2210 bool respect_downstream_limits) 2211 { 2212 struct intel_connector *connector = to_intel_connector(conn_state->connector); 2213 const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; 2214 const struct drm_display_info *info = &connector->base.display_info; 2215 struct drm_i915_private *i915 = to_i915(connector->base.dev); 2216 bool ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode); 2217 int ret; 2218 2219 crtc_state->sink_format = 2220 intel_hdmi_sink_format(crtc_state, connector, ycbcr_420_only); 2221 2222 if (ycbcr_420_only && crtc_state->sink_format != INTEL_OUTPUT_FORMAT_YCBCR420) { 2223 drm_dbg_kms(&i915->drm, 2224 "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not possible. Falling back to RGB.\n"); 2225 crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB; 2226 } 2227 2228 crtc_state->output_format = intel_hdmi_output_format(crtc_state); 2229 ret = intel_hdmi_compute_clock(encoder, crtc_state, respect_downstream_limits); 2230 if (ret) { 2231 if (crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR420 || 2232 !crtc_state->has_hdmi_sink || 2233 !connector->base.ycbcr_420_allowed || 2234 !drm_mode_is_420_also(info, adjusted_mode)) 2235 return ret; 2236 2237 crtc_state->sink_format = INTEL_OUTPUT_FORMAT_YCBCR420; 2238 crtc_state->output_format = intel_hdmi_output_format(crtc_state); 2239 ret = intel_hdmi_compute_clock(encoder, crtc_state, respect_downstream_limits); 2240 } 2241 2242 return ret; 2243 } 2244 2245 static bool intel_hdmi_is_cloned(const struct intel_crtc_state *crtc_state) 2246 { 2247 return crtc_state->uapi.encoder_mask && 2248 !is_power_of_2(crtc_state->uapi.encoder_mask); 2249 } 2250 2251 static bool source_supports_scrambling(struct intel_encoder *encoder) 2252 { 2253 /* 2254 * Gen 10+ support HDMI 2.0 : the max tmds clock is 594MHz, and 2255 * scrambling is supported. 2256 * But there seem to be cases where certain platforms that support 2257 * HDMI 2.0, have an HDMI1.4 retimer chip, and the max tmds clock is 2258 * capped by VBT to less than 340MHz. 2259 * 2260 * In such cases when an HDMI2.0 sink is connected, it creates a 2261 * problem : the platform and the sink both support scrambling but the 2262 * HDMI 1.4 retimer chip doesn't. 2263 * 2264 * So go for scrambling, based on the max tmds clock taking into account, 2265 * restrictions coming from VBT. 2266 */ 2267 return intel_hdmi_source_max_tmds_clock(encoder) > 340000; 2268 } 2269 2270 bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder, 2271 const struct intel_crtc_state *crtc_state, 2272 const struct drm_connector_state *conn_state) 2273 { 2274 struct intel_hdmi *hdmi = enc_to_intel_hdmi(encoder); 2275 2276 return intel_has_hdmi_sink(hdmi, conn_state) && 2277 !intel_hdmi_is_cloned(crtc_state); 2278 } 2279 2280 int intel_hdmi_compute_config(struct intel_encoder *encoder, 2281 struct intel_crtc_state *pipe_config, 2282 struct drm_connector_state *conn_state) 2283 { 2284 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2285 struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode; 2286 struct drm_connector *connector = conn_state->connector; 2287 struct drm_scdc *scdc = &connector->display_info.hdmi.scdc; 2288 int ret; 2289 2290 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) 2291 return -EINVAL; 2292 2293 if (!connector->interlace_allowed && 2294 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) 2295 return -EINVAL; 2296 2297 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; 2298 2299 if (pipe_config->has_hdmi_sink) 2300 pipe_config->has_infoframe = true; 2301 2302 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) 2303 pipe_config->pixel_multiplier = 2; 2304 2305 pipe_config->has_audio = 2306 intel_hdmi_has_audio(encoder, pipe_config, conn_state) && 2307 intel_audio_compute_config(encoder, pipe_config, conn_state); 2308 2309 /* 2310 * Try to respect downstream TMDS clock limits first, if 2311 * that fails assume the user might know something we don't. 2312 */ 2313 ret = intel_hdmi_compute_output_format(encoder, pipe_config, conn_state, true); 2314 if (ret) 2315 ret = intel_hdmi_compute_output_format(encoder, pipe_config, conn_state, false); 2316 if (ret) { 2317 drm_dbg_kms(&dev_priv->drm, 2318 "unsupported HDMI clock (%d kHz), rejecting mode\n", 2319 pipe_config->hw.adjusted_mode.crtc_clock); 2320 return ret; 2321 } 2322 2323 if (intel_hdmi_is_ycbcr420(pipe_config)) { 2324 ret = intel_panel_fitting(pipe_config, conn_state); 2325 if (ret) 2326 return ret; 2327 } 2328 2329 pipe_config->limited_color_range = 2330 intel_hdmi_limited_color_range(pipe_config, conn_state); 2331 2332 if (conn_state->picture_aspect_ratio) 2333 adjusted_mode->picture_aspect_ratio = 2334 conn_state->picture_aspect_ratio; 2335 2336 pipe_config->lane_count = 4; 2337 2338 if (scdc->scrambling.supported && source_supports_scrambling(encoder)) { 2339 if (scdc->scrambling.low_rates) 2340 pipe_config->hdmi_scrambling = true; 2341 2342 if (pipe_config->port_clock > 340000) { 2343 pipe_config->hdmi_scrambling = true; 2344 pipe_config->hdmi_high_tmds_clock_ratio = true; 2345 } 2346 } 2347 2348 intel_hdmi_compute_gcp_infoframe(encoder, pipe_config, 2349 conn_state); 2350 2351 if (!intel_hdmi_compute_avi_infoframe(encoder, pipe_config, conn_state)) { 2352 drm_dbg_kms(&dev_priv->drm, "bad AVI infoframe\n"); 2353 return -EINVAL; 2354 } 2355 2356 if (!intel_hdmi_compute_spd_infoframe(encoder, pipe_config, conn_state)) { 2357 drm_dbg_kms(&dev_priv->drm, "bad SPD infoframe\n"); 2358 return -EINVAL; 2359 } 2360 2361 if (!intel_hdmi_compute_hdmi_infoframe(encoder, pipe_config, conn_state)) { 2362 drm_dbg_kms(&dev_priv->drm, "bad HDMI infoframe\n"); 2363 return -EINVAL; 2364 } 2365 2366 if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config, conn_state)) { 2367 drm_dbg_kms(&dev_priv->drm, "bad DRM infoframe\n"); 2368 return -EINVAL; 2369 } 2370 2371 return 0; 2372 } 2373 2374 void intel_hdmi_encoder_shutdown(struct intel_encoder *encoder) 2375 { 2376 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); 2377 2378 /* 2379 * Give a hand to buggy BIOSen which forget to turn 2380 * the TMDS output buffers back on after a reboot. 2381 */ 2382 intel_dp_dual_mode_set_tmds_output(intel_hdmi, true); 2383 } 2384 2385 static void 2386 intel_hdmi_unset_edid(struct drm_connector *connector) 2387 { 2388 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector)); 2389 2390 intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE; 2391 intel_hdmi->dp_dual_mode.max_tmds_clock = 0; 2392 2393 drm_edid_free(to_intel_connector(connector)->detect_edid); 2394 to_intel_connector(connector)->detect_edid = NULL; 2395 } 2396 2397 static void 2398 intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector) 2399 { 2400 struct drm_i915_private *dev_priv = to_i915(connector->dev); 2401 struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector)); 2402 struct intel_encoder *encoder = &hdmi_to_dig_port(hdmi)->base; 2403 struct i2c_adapter *adapter = 2404 intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus); 2405 enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(&dev_priv->drm, adapter); 2406 2407 /* 2408 * Type 1 DVI adaptors are not required to implement any 2409 * registers, so we can't always detect their presence. 2410 * Ideally we should be able to check the state of the 2411 * CONFIG1 pin, but no such luck on our hardware. 2412 * 2413 * The only method left to us is to check the VBT to see 2414 * if the port is a dual mode capable DP port. 2415 */ 2416 if (type == DRM_DP_DUAL_MODE_UNKNOWN) { 2417 if (!connector->force && 2418 intel_bios_encoder_supports_dp_dual_mode(encoder->devdata)) { 2419 drm_dbg_kms(&dev_priv->drm, 2420 "Assuming DP dual mode adaptor presence based on VBT\n"); 2421 type = DRM_DP_DUAL_MODE_TYPE1_DVI; 2422 } else { 2423 type = DRM_DP_DUAL_MODE_NONE; 2424 } 2425 } 2426 2427 if (type == DRM_DP_DUAL_MODE_NONE) 2428 return; 2429 2430 hdmi->dp_dual_mode.type = type; 2431 hdmi->dp_dual_mode.max_tmds_clock = 2432 drm_dp_dual_mode_max_tmds_clock(&dev_priv->drm, type, adapter); 2433 2434 drm_dbg_kms(&dev_priv->drm, 2435 "DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n", 2436 drm_dp_get_dual_mode_type_name(type), 2437 hdmi->dp_dual_mode.max_tmds_clock); 2438 2439 /* Older VBTs are often buggy and can't be trusted :( Play it safe. */ 2440 if ((DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv)) && 2441 !intel_bios_encoder_supports_dp_dual_mode(encoder->devdata)) { 2442 drm_dbg_kms(&dev_priv->drm, 2443 "Ignoring DP dual mode adaptor max TMDS clock for native HDMI port\n"); 2444 hdmi->dp_dual_mode.max_tmds_clock = 0; 2445 } 2446 } 2447 2448 static bool 2449 intel_hdmi_set_edid(struct drm_connector *connector) 2450 { 2451 struct drm_i915_private *dev_priv = to_i915(connector->dev); 2452 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector)); 2453 intel_wakeref_t wakeref; 2454 const struct drm_edid *drm_edid; 2455 const struct edid *edid; 2456 bool connected = false; 2457 struct i2c_adapter *i2c; 2458 2459 wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS); 2460 2461 i2c = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus); 2462 2463 drm_edid = drm_edid_read_ddc(connector, i2c); 2464 2465 if (!drm_edid && !intel_gmbus_is_forced_bit(i2c)) { 2466 drm_dbg_kms(&dev_priv->drm, 2467 "HDMI GMBUS EDID read failed, retry using GPIO bit-banging\n"); 2468 intel_gmbus_force_bit(i2c, true); 2469 drm_edid = drm_edid_read_ddc(connector, i2c); 2470 intel_gmbus_force_bit(i2c, false); 2471 } 2472 2473 /* Below we depend on display info having been updated */ 2474 drm_edid_connector_update(connector, drm_edid); 2475 2476 to_intel_connector(connector)->detect_edid = drm_edid; 2477 2478 /* FIXME: Get rid of drm_edid_raw() */ 2479 edid = drm_edid_raw(drm_edid); 2480 if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) { 2481 intel_hdmi_dp_dual_mode_detect(connector); 2482 2483 connected = true; 2484 } 2485 2486 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref); 2487 2488 cec_notifier_set_phys_addr_from_edid(intel_hdmi->cec_notifier, edid); 2489 2490 return connected; 2491 } 2492 2493 static enum drm_connector_status 2494 intel_hdmi_detect(struct drm_connector *connector, bool force) 2495 { 2496 enum drm_connector_status status = connector_status_disconnected; 2497 struct drm_i915_private *dev_priv = to_i915(connector->dev); 2498 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector)); 2499 struct intel_encoder *encoder = &hdmi_to_dig_port(intel_hdmi)->base; 2500 intel_wakeref_t wakeref; 2501 2502 drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n", 2503 connector->base.id, connector->name); 2504 2505 if (!INTEL_DISPLAY_ENABLED(dev_priv)) 2506 return connector_status_disconnected; 2507 2508 wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS); 2509 2510 if (DISPLAY_VER(dev_priv) >= 11 && 2511 !intel_digital_port_connected(encoder)) 2512 goto out; 2513 2514 intel_hdmi_unset_edid(connector); 2515 2516 if (intel_hdmi_set_edid(connector)) 2517 status = connector_status_connected; 2518 2519 out: 2520 intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref); 2521 2522 if (status != connector_status_connected) 2523 cec_notifier_phys_addr_invalidate(intel_hdmi->cec_notifier); 2524 2525 /* 2526 * Make sure the refs for power wells enabled during detect are 2527 * dropped to avoid a new detect cycle triggered by HPD polling. 2528 */ 2529 intel_display_power_flush_work(dev_priv); 2530 2531 return status; 2532 } 2533 2534 static void 2535 intel_hdmi_force(struct drm_connector *connector) 2536 { 2537 struct drm_i915_private *i915 = to_i915(connector->dev); 2538 2539 drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n", 2540 connector->base.id, connector->name); 2541 2542 intel_hdmi_unset_edid(connector); 2543 2544 if (connector->status != connector_status_connected) 2545 return; 2546 2547 intel_hdmi_set_edid(connector); 2548 } 2549 2550 static int intel_hdmi_get_modes(struct drm_connector *connector) 2551 { 2552 /* drm_edid_connector_update() done in ->detect() or ->force() */ 2553 return drm_edid_connector_add_modes(connector); 2554 } 2555 2556 static struct i2c_adapter * 2557 intel_hdmi_get_i2c_adapter(struct drm_connector *connector) 2558 { 2559 struct drm_i915_private *dev_priv = to_i915(connector->dev); 2560 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector)); 2561 2562 return intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus); 2563 } 2564 2565 static void intel_hdmi_create_i2c_symlink(struct drm_connector *connector) 2566 { 2567 struct drm_i915_private *i915 = to_i915(connector->dev); 2568 struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector); 2569 struct kobject *i2c_kobj = &adapter->dev.kobj; 2570 struct kobject *connector_kobj = &connector->kdev->kobj; 2571 int ret; 2572 2573 ret = sysfs_create_link(connector_kobj, i2c_kobj, i2c_kobj->name); 2574 if (ret) 2575 drm_err(&i915->drm, "Failed to create i2c symlink (%d)\n", ret); 2576 } 2577 2578 static void intel_hdmi_remove_i2c_symlink(struct drm_connector *connector) 2579 { 2580 struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector); 2581 struct kobject *i2c_kobj = &adapter->dev.kobj; 2582 struct kobject *connector_kobj = &connector->kdev->kobj; 2583 2584 sysfs_remove_link(connector_kobj, i2c_kobj->name); 2585 } 2586 2587 static int 2588 intel_hdmi_connector_register(struct drm_connector *connector) 2589 { 2590 int ret; 2591 2592 ret = intel_connector_register(connector); 2593 if (ret) 2594 return ret; 2595 2596 intel_hdmi_create_i2c_symlink(connector); 2597 2598 return ret; 2599 } 2600 2601 static void intel_hdmi_connector_unregister(struct drm_connector *connector) 2602 { 2603 struct cec_notifier *n = intel_attached_hdmi(to_intel_connector(connector))->cec_notifier; 2604 2605 cec_notifier_conn_unregister(n); 2606 2607 intel_hdmi_remove_i2c_symlink(connector); 2608 intel_connector_unregister(connector); 2609 } 2610 2611 static const struct drm_connector_funcs intel_hdmi_connector_funcs = { 2612 .detect = intel_hdmi_detect, 2613 .force = intel_hdmi_force, 2614 .fill_modes = drm_helper_probe_single_connector_modes, 2615 .atomic_get_property = intel_digital_connector_atomic_get_property, 2616 .atomic_set_property = intel_digital_connector_atomic_set_property, 2617 .late_register = intel_hdmi_connector_register, 2618 .early_unregister = intel_hdmi_connector_unregister, 2619 .destroy = intel_connector_destroy, 2620 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 2621 .atomic_duplicate_state = intel_digital_connector_duplicate_state, 2622 }; 2623 2624 static int intel_hdmi_connector_atomic_check(struct drm_connector *connector, 2625 struct drm_atomic_state *state) 2626 { 2627 struct drm_i915_private *i915 = to_i915(state->dev); 2628 2629 if (HAS_DDI(i915)) 2630 return intel_digital_connector_atomic_check(connector, state); 2631 else 2632 return g4x_hdmi_connector_atomic_check(connector, state); 2633 } 2634 2635 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = { 2636 .get_modes = intel_hdmi_get_modes, 2637 .mode_valid = intel_hdmi_mode_valid, 2638 .atomic_check = intel_hdmi_connector_atomic_check, 2639 }; 2640 2641 static void 2642 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector) 2643 { 2644 struct drm_i915_private *dev_priv = to_i915(connector->dev); 2645 2646 intel_attach_force_audio_property(connector); 2647 intel_attach_broadcast_rgb_property(connector); 2648 intel_attach_aspect_ratio_property(connector); 2649 2650 intel_attach_hdmi_colorspace_property(connector); 2651 drm_connector_attach_content_type_property(connector); 2652 2653 if (DISPLAY_VER(dev_priv) >= 10) 2654 drm_connector_attach_hdr_output_metadata_property(connector); 2655 2656 if (!HAS_GMCH(dev_priv)) 2657 drm_connector_attach_max_bpc_property(connector, 8, 12); 2658 } 2659 2660 /* 2661 * intel_hdmi_handle_sink_scrambling: handle sink scrambling/clock ratio setup 2662 * @encoder: intel_encoder 2663 * @connector: drm_connector 2664 * @high_tmds_clock_ratio = bool to indicate if the function needs to set 2665 * or reset the high tmds clock ratio for scrambling 2666 * @scrambling: bool to Indicate if the function needs to set or reset 2667 * sink scrambling 2668 * 2669 * This function handles scrambling on HDMI 2.0 capable sinks. 2670 * If required clock rate is > 340 Mhz && scrambling is supported by sink 2671 * it enables scrambling. This should be called before enabling the HDMI 2672 * 2.0 port, as the sink can choose to disable the scrambling if it doesn't 2673 * detect a scrambled clock within 100 ms. 2674 * 2675 * Returns: 2676 * True on success, false on failure. 2677 */ 2678 bool intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder, 2679 struct drm_connector *connector, 2680 bool high_tmds_clock_ratio, 2681 bool scrambling) 2682 { 2683 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2684 struct drm_scrambling *sink_scrambling = 2685 &connector->display_info.hdmi.scdc.scrambling; 2686 2687 if (!sink_scrambling->supported) 2688 return true; 2689 2690 drm_dbg_kms(&dev_priv->drm, 2691 "[CONNECTOR:%d:%s] scrambling=%s, TMDS bit clock ratio=1/%d\n", 2692 connector->base.id, connector->name, 2693 str_yes_no(scrambling), high_tmds_clock_ratio ? 40 : 10); 2694 2695 /* Set TMDS bit clock ratio to 1/40 or 1/10, and enable/disable scrambling */ 2696 return drm_scdc_set_high_tmds_clock_ratio(connector, high_tmds_clock_ratio) && 2697 drm_scdc_set_scrambling(connector, scrambling); 2698 } 2699 2700 static u8 chv_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2701 { 2702 u8 ddc_pin; 2703 2704 switch (port) { 2705 case PORT_B: 2706 ddc_pin = GMBUS_PIN_DPB; 2707 break; 2708 case PORT_C: 2709 ddc_pin = GMBUS_PIN_DPC; 2710 break; 2711 case PORT_D: 2712 ddc_pin = GMBUS_PIN_DPD_CHV; 2713 break; 2714 default: 2715 MISSING_CASE(port); 2716 ddc_pin = GMBUS_PIN_DPB; 2717 break; 2718 } 2719 return ddc_pin; 2720 } 2721 2722 static u8 bxt_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2723 { 2724 u8 ddc_pin; 2725 2726 switch (port) { 2727 case PORT_B: 2728 ddc_pin = GMBUS_PIN_1_BXT; 2729 break; 2730 case PORT_C: 2731 ddc_pin = GMBUS_PIN_2_BXT; 2732 break; 2733 default: 2734 MISSING_CASE(port); 2735 ddc_pin = GMBUS_PIN_1_BXT; 2736 break; 2737 } 2738 return ddc_pin; 2739 } 2740 2741 static u8 cnp_port_to_ddc_pin(struct drm_i915_private *dev_priv, 2742 enum port port) 2743 { 2744 u8 ddc_pin; 2745 2746 switch (port) { 2747 case PORT_B: 2748 ddc_pin = GMBUS_PIN_1_BXT; 2749 break; 2750 case PORT_C: 2751 ddc_pin = GMBUS_PIN_2_BXT; 2752 break; 2753 case PORT_D: 2754 ddc_pin = GMBUS_PIN_4_CNP; 2755 break; 2756 case PORT_F: 2757 ddc_pin = GMBUS_PIN_3_BXT; 2758 break; 2759 default: 2760 MISSING_CASE(port); 2761 ddc_pin = GMBUS_PIN_1_BXT; 2762 break; 2763 } 2764 return ddc_pin; 2765 } 2766 2767 static u8 icl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2768 { 2769 enum phy phy = intel_port_to_phy(dev_priv, port); 2770 2771 if (intel_phy_is_combo(dev_priv, phy)) 2772 return GMBUS_PIN_1_BXT + port; 2773 else if (intel_phy_is_tc(dev_priv, phy)) 2774 return GMBUS_PIN_9_TC1_ICP + intel_port_to_tc(dev_priv, port); 2775 2776 drm_WARN(&dev_priv->drm, 1, "Unknown port:%c\n", port_name(port)); 2777 return GMBUS_PIN_2_BXT; 2778 } 2779 2780 static u8 mcc_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2781 { 2782 enum phy phy = intel_port_to_phy(dev_priv, port); 2783 u8 ddc_pin; 2784 2785 switch (phy) { 2786 case PHY_A: 2787 ddc_pin = GMBUS_PIN_1_BXT; 2788 break; 2789 case PHY_B: 2790 ddc_pin = GMBUS_PIN_2_BXT; 2791 break; 2792 case PHY_C: 2793 ddc_pin = GMBUS_PIN_9_TC1_ICP; 2794 break; 2795 default: 2796 MISSING_CASE(phy); 2797 ddc_pin = GMBUS_PIN_1_BXT; 2798 break; 2799 } 2800 return ddc_pin; 2801 } 2802 2803 static u8 rkl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2804 { 2805 enum phy phy = intel_port_to_phy(dev_priv, port); 2806 2807 WARN_ON(port == PORT_C); 2808 2809 /* 2810 * Pin mapping for RKL depends on which PCH is present. With TGP, the 2811 * final two outputs use type-c pins, even though they're actually 2812 * combo outputs. With CMP, the traditional DDI A-D pins are used for 2813 * all outputs. 2814 */ 2815 if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && phy >= PHY_C) 2816 return GMBUS_PIN_9_TC1_ICP + phy - PHY_C; 2817 2818 return GMBUS_PIN_1_BXT + phy; 2819 } 2820 2821 static u8 gen9bc_tgp_port_to_ddc_pin(struct drm_i915_private *i915, enum port port) 2822 { 2823 enum phy phy = intel_port_to_phy(i915, port); 2824 2825 drm_WARN_ON(&i915->drm, port == PORT_A); 2826 2827 /* 2828 * Pin mapping for GEN9 BC depends on which PCH is present. With TGP, 2829 * final two outputs use type-c pins, even though they're actually 2830 * combo outputs. With CMP, the traditional DDI A-D pins are used for 2831 * all outputs. 2832 */ 2833 if (INTEL_PCH_TYPE(i915) >= PCH_TGP && phy >= PHY_C) 2834 return GMBUS_PIN_9_TC1_ICP + phy - PHY_C; 2835 2836 return GMBUS_PIN_1_BXT + phy; 2837 } 2838 2839 static u8 dg1_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2840 { 2841 return intel_port_to_phy(dev_priv, port) + 1; 2842 } 2843 2844 static u8 adls_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) 2845 { 2846 enum phy phy = intel_port_to_phy(dev_priv, port); 2847 2848 WARN_ON(port == PORT_B || port == PORT_C); 2849 2850 /* 2851 * Pin mapping for ADL-S requires TC pins for all combo phy outputs 2852 * except first combo output. 2853 */ 2854 if (phy == PHY_A) 2855 return GMBUS_PIN_1_BXT; 2856 2857 return GMBUS_PIN_9_TC1_ICP + phy - PHY_B; 2858 } 2859 2860 static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv, 2861 enum port port) 2862 { 2863 u8 ddc_pin; 2864 2865 switch (port) { 2866 case PORT_B: 2867 ddc_pin = GMBUS_PIN_DPB; 2868 break; 2869 case PORT_C: 2870 ddc_pin = GMBUS_PIN_DPC; 2871 break; 2872 case PORT_D: 2873 ddc_pin = GMBUS_PIN_DPD; 2874 break; 2875 default: 2876 MISSING_CASE(port); 2877 ddc_pin = GMBUS_PIN_DPB; 2878 break; 2879 } 2880 return ddc_pin; 2881 } 2882 2883 static u8 intel_hdmi_default_ddc_pin(struct intel_encoder *encoder) 2884 { 2885 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 2886 enum port port = encoder->port; 2887 u8 ddc_pin; 2888 2889 if (IS_ALDERLAKE_S(dev_priv)) 2890 ddc_pin = adls_port_to_ddc_pin(dev_priv, port); 2891 else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1) 2892 ddc_pin = dg1_port_to_ddc_pin(dev_priv, port); 2893 else if (IS_ROCKETLAKE(dev_priv)) 2894 ddc_pin = rkl_port_to_ddc_pin(dev_priv, port); 2895 else if (DISPLAY_VER(dev_priv) == 9 && HAS_PCH_TGP(dev_priv)) 2896 ddc_pin = gen9bc_tgp_port_to_ddc_pin(dev_priv, port); 2897 else if ((IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv)) && 2898 HAS_PCH_TGP(dev_priv)) 2899 ddc_pin = mcc_port_to_ddc_pin(dev_priv, port); 2900 else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) 2901 ddc_pin = icl_port_to_ddc_pin(dev_priv, port); 2902 else if (HAS_PCH_CNP(dev_priv)) 2903 ddc_pin = cnp_port_to_ddc_pin(dev_priv, port); 2904 else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) 2905 ddc_pin = bxt_port_to_ddc_pin(dev_priv, port); 2906 else if (IS_CHERRYVIEW(dev_priv)) 2907 ddc_pin = chv_port_to_ddc_pin(dev_priv, port); 2908 else 2909 ddc_pin = g4x_port_to_ddc_pin(dev_priv, port); 2910 2911 return ddc_pin; 2912 } 2913 2914 static struct intel_encoder * 2915 get_encoder_by_ddc_pin(struct intel_encoder *encoder, u8 ddc_pin) 2916 { 2917 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 2918 struct intel_encoder *other; 2919 2920 for_each_intel_encoder(&i915->drm, other) { 2921 if (other == encoder) 2922 continue; 2923 2924 if (!intel_encoder_is_dig_port(other)) 2925 continue; 2926 2927 if (enc_to_dig_port(other)->hdmi.ddc_bus == ddc_pin) 2928 return other; 2929 } 2930 2931 return NULL; 2932 } 2933 2934 static u8 intel_hdmi_ddc_pin(struct intel_encoder *encoder) 2935 { 2936 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 2937 struct intel_encoder *other; 2938 const char *source; 2939 u8 ddc_pin; 2940 2941 ddc_pin = intel_bios_hdmi_ddc_pin(encoder->devdata); 2942 source = "VBT"; 2943 2944 if (!ddc_pin) { 2945 ddc_pin = intel_hdmi_default_ddc_pin(encoder); 2946 source = "platform default"; 2947 } 2948 2949 if (!intel_gmbus_is_valid_pin(i915, ddc_pin)) { 2950 drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] Invalid DDC pin %d\n", 2951 encoder->base.base.id, encoder->base.name, ddc_pin); 2952 return 0; 2953 } 2954 2955 other = get_encoder_by_ddc_pin(encoder, ddc_pin); 2956 if (other) { 2957 drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] DDC pin %d already claimed by [ENCODER:%d:%s]\n", 2958 encoder->base.base.id, encoder->base.name, ddc_pin, 2959 other->base.base.id, other->base.name); 2960 return 0; 2961 } 2962 2963 drm_dbg_kms(&i915->drm, 2964 "[ENCODER:%d:%s] Using DDC pin 0x%x (%s)\n", 2965 encoder->base.base.id, encoder->base.name, 2966 ddc_pin, source); 2967 2968 return ddc_pin; 2969 } 2970 2971 void intel_infoframe_init(struct intel_digital_port *dig_port) 2972 { 2973 struct drm_i915_private *dev_priv = 2974 to_i915(dig_port->base.base.dev); 2975 2976 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { 2977 dig_port->write_infoframe = vlv_write_infoframe; 2978 dig_port->read_infoframe = vlv_read_infoframe; 2979 dig_port->set_infoframes = vlv_set_infoframes; 2980 dig_port->infoframes_enabled = vlv_infoframes_enabled; 2981 } else if (IS_G4X(dev_priv)) { 2982 dig_port->write_infoframe = g4x_write_infoframe; 2983 dig_port->read_infoframe = g4x_read_infoframe; 2984 dig_port->set_infoframes = g4x_set_infoframes; 2985 dig_port->infoframes_enabled = g4x_infoframes_enabled; 2986 } else if (HAS_DDI(dev_priv)) { 2987 if (intel_bios_encoder_is_lspcon(dig_port->base.devdata)) { 2988 dig_port->write_infoframe = lspcon_write_infoframe; 2989 dig_port->read_infoframe = lspcon_read_infoframe; 2990 dig_port->set_infoframes = lspcon_set_infoframes; 2991 dig_port->infoframes_enabled = lspcon_infoframes_enabled; 2992 } else { 2993 dig_port->write_infoframe = hsw_write_infoframe; 2994 dig_port->read_infoframe = hsw_read_infoframe; 2995 dig_port->set_infoframes = hsw_set_infoframes; 2996 dig_port->infoframes_enabled = hsw_infoframes_enabled; 2997 } 2998 } else if (HAS_PCH_IBX(dev_priv)) { 2999 dig_port->write_infoframe = ibx_write_infoframe; 3000 dig_port->read_infoframe = ibx_read_infoframe; 3001 dig_port->set_infoframes = ibx_set_infoframes; 3002 dig_port->infoframes_enabled = ibx_infoframes_enabled; 3003 } else { 3004 dig_port->write_infoframe = cpt_write_infoframe; 3005 dig_port->read_infoframe = cpt_read_infoframe; 3006 dig_port->set_infoframes = cpt_set_infoframes; 3007 dig_port->infoframes_enabled = cpt_infoframes_enabled; 3008 } 3009 } 3010 3011 void intel_hdmi_init_connector(struct intel_digital_port *dig_port, 3012 struct intel_connector *intel_connector) 3013 { 3014 struct drm_connector *connector = &intel_connector->base; 3015 struct intel_hdmi *intel_hdmi = &dig_port->hdmi; 3016 struct intel_encoder *intel_encoder = &dig_port->base; 3017 struct drm_device *dev = intel_encoder->base.dev; 3018 struct drm_i915_private *dev_priv = to_i915(dev); 3019 struct i2c_adapter *ddc; 3020 enum port port = intel_encoder->port; 3021 struct cec_connector_info conn_info; 3022 3023 drm_dbg_kms(&dev_priv->drm, 3024 "Adding HDMI connector on [ENCODER:%d:%s]\n", 3025 intel_encoder->base.base.id, intel_encoder->base.name); 3026 3027 if (DISPLAY_VER(dev_priv) < 12 && drm_WARN_ON(dev, port == PORT_A)) 3028 return; 3029 3030 if (drm_WARN(dev, dig_port->max_lanes < 4, 3031 "Not enough lanes (%d) for HDMI on [ENCODER:%d:%s]\n", 3032 dig_port->max_lanes, intel_encoder->base.base.id, 3033 intel_encoder->base.name)) 3034 return; 3035 3036 intel_hdmi->ddc_bus = intel_hdmi_ddc_pin(intel_encoder); 3037 if (!intel_hdmi->ddc_bus) 3038 return; 3039 3040 ddc = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus); 3041 3042 drm_connector_init_with_ddc(dev, connector, 3043 &intel_hdmi_connector_funcs, 3044 DRM_MODE_CONNECTOR_HDMIA, 3045 ddc); 3046 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs); 3047 3048 if (DISPLAY_VER(dev_priv) < 12) 3049 connector->interlace_allowed = true; 3050 3051 connector->stereo_allowed = true; 3052 3053 if (DISPLAY_VER(dev_priv) >= 10) 3054 connector->ycbcr_420_allowed = true; 3055 3056 intel_connector->polled = DRM_CONNECTOR_POLL_HPD; 3057 3058 if (HAS_DDI(dev_priv)) 3059 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; 3060 else 3061 intel_connector->get_hw_state = intel_connector_get_hw_state; 3062 3063 intel_hdmi_add_properties(intel_hdmi, connector); 3064 3065 intel_connector_attach_encoder(intel_connector, intel_encoder); 3066 intel_hdmi->attached_connector = intel_connector; 3067 3068 if (is_hdcp_supported(dev_priv, port)) { 3069 int ret = intel_hdcp_init(intel_connector, dig_port, 3070 &intel_hdmi_hdcp_shim); 3071 if (ret) 3072 drm_dbg_kms(&dev_priv->drm, 3073 "HDCP init failed, skipping.\n"); 3074 } 3075 3076 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written 3077 * 0xd. Failure to do so will result in spurious interrupts being 3078 * generated on the port when a cable is not attached. 3079 */ 3080 if (IS_G45(dev_priv)) { 3081 u32 temp = intel_de_read(dev_priv, PEG_BAND_GAP_DATA); 3082 intel_de_write(dev_priv, PEG_BAND_GAP_DATA, 3083 (temp & ~0xf) | 0xd); 3084 } 3085 3086 cec_fill_conn_info_from_drm(&conn_info, connector); 3087 3088 intel_hdmi->cec_notifier = 3089 cec_notifier_conn_register(dev->dev, port_identifier(port), 3090 &conn_info); 3091 if (!intel_hdmi->cec_notifier) 3092 drm_dbg_kms(&dev_priv->drm, "CEC notifier get failed\n"); 3093 } 3094 3095 /* 3096 * intel_hdmi_dsc_get_slice_height - get the dsc slice_height 3097 * @vactive: Vactive of a display mode 3098 * 3099 * @return: appropriate dsc slice height for a given mode. 3100 */ 3101 int intel_hdmi_dsc_get_slice_height(int vactive) 3102 { 3103 int slice_height; 3104 3105 /* 3106 * Slice Height determination : HDMI2.1 Section 7.7.5.2 3107 * Select smallest slice height >=96, that results in a valid PPS and 3108 * requires minimum padding lines required for final slice. 3109 * 3110 * Assumption : Vactive is even. 3111 */ 3112 for (slice_height = 96; slice_height <= vactive; slice_height += 2) 3113 if (vactive % slice_height == 0) 3114 return slice_height; 3115 3116 return 0; 3117 } 3118 3119 /* 3120 * intel_hdmi_dsc_get_num_slices - get no. of dsc slices based on dsc encoder 3121 * and dsc decoder capabilities 3122 * 3123 * @crtc_state: intel crtc_state 3124 * @src_max_slices: maximum slices supported by the DSC encoder 3125 * @src_max_slice_width: maximum slice width supported by DSC encoder 3126 * @hdmi_max_slices: maximum slices supported by sink DSC decoder 3127 * @hdmi_throughput: maximum clock per slice (MHz) supported by HDMI sink 3128 * 3129 * @return: num of dsc slices that can be supported by the dsc encoder 3130 * and decoder. 3131 */ 3132 int 3133 intel_hdmi_dsc_get_num_slices(const struct intel_crtc_state *crtc_state, 3134 int src_max_slices, int src_max_slice_width, 3135 int hdmi_max_slices, int hdmi_throughput) 3136 { 3137 /* Pixel rates in KPixels/sec */ 3138 #define HDMI_DSC_PEAK_PIXEL_RATE 2720000 3139 /* 3140 * Rates at which the source and sink are required to process pixels in each 3141 * slice, can be two levels: either atleast 340000KHz or atleast 40000KHz. 3142 */ 3143 #define HDMI_DSC_MAX_ENC_THROUGHPUT_0 340000 3144 #define HDMI_DSC_MAX_ENC_THROUGHPUT_1 400000 3145 3146 /* Spec limits the slice width to 2720 pixels */ 3147 #define MAX_HDMI_SLICE_WIDTH 2720 3148 int kslice_adjust; 3149 int adjusted_clk_khz; 3150 int min_slices; 3151 int target_slices; 3152 int max_throughput; /* max clock freq. in khz per slice */ 3153 int max_slice_width; 3154 int slice_width; 3155 int pixel_clock = crtc_state->hw.adjusted_mode.crtc_clock; 3156 3157 if (!hdmi_throughput) 3158 return 0; 3159 3160 /* 3161 * Slice Width determination : HDMI2.1 Section 7.7.5.1 3162 * kslice_adjust factor for 4:2:0, and 4:2:2 formats is 0.5, where as 3163 * for 4:4:4 is 1.0. Multiplying these factors by 10 and later 3164 * dividing adjusted clock value by 10. 3165 */ 3166 if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 || 3167 crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) 3168 kslice_adjust = 10; 3169 else 3170 kslice_adjust = 5; 3171 3172 /* 3173 * As per spec, the rate at which the source and the sink process 3174 * the pixels per slice are at two levels: atleast 340Mhz or 400Mhz. 3175 * This depends upon the pixel clock rate and output formats 3176 * (kslice adjust). 3177 * If pixel clock * kslice adjust >= 2720MHz slices can be processed 3178 * at max 340MHz, otherwise they can be processed at max 400MHz. 3179 */ 3180 3181 adjusted_clk_khz = DIV_ROUND_UP(kslice_adjust * pixel_clock, 10); 3182 3183 if (adjusted_clk_khz <= HDMI_DSC_PEAK_PIXEL_RATE) 3184 max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_0; 3185 else 3186 max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_1; 3187 3188 /* 3189 * Taking into account the sink's capability for maximum 3190 * clock per slice (in MHz) as read from HF-VSDB. 3191 */ 3192 max_throughput = min(max_throughput, hdmi_throughput * 1000); 3193 3194 min_slices = DIV_ROUND_UP(adjusted_clk_khz, max_throughput); 3195 max_slice_width = min(MAX_HDMI_SLICE_WIDTH, src_max_slice_width); 3196 3197 /* 3198 * Keep on increasing the num of slices/line, starting from min_slices 3199 * per line till we get such a number, for which the slice_width is 3200 * just less than max_slice_width. The slices/line selected should be 3201 * less than or equal to the max horizontal slices that the combination 3202 * of PCON encoder and HDMI decoder can support. 3203 */ 3204 slice_width = max_slice_width; 3205 3206 do { 3207 if (min_slices <= 1 && src_max_slices >= 1 && hdmi_max_slices >= 1) 3208 target_slices = 1; 3209 else if (min_slices <= 2 && src_max_slices >= 2 && hdmi_max_slices >= 2) 3210 target_slices = 2; 3211 else if (min_slices <= 4 && src_max_slices >= 4 && hdmi_max_slices >= 4) 3212 target_slices = 4; 3213 else if (min_slices <= 8 && src_max_slices >= 8 && hdmi_max_slices >= 8) 3214 target_slices = 8; 3215 else if (min_slices <= 12 && src_max_slices >= 12 && hdmi_max_slices >= 12) 3216 target_slices = 12; 3217 else if (min_slices <= 16 && src_max_slices >= 16 && hdmi_max_slices >= 16) 3218 target_slices = 16; 3219 else 3220 return 0; 3221 3222 slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay, target_slices); 3223 if (slice_width >= max_slice_width) 3224 min_slices = target_slices + 1; 3225 } while (slice_width >= max_slice_width); 3226 3227 return target_slices; 3228 } 3229 3230 /* 3231 * intel_hdmi_dsc_get_bpp - get the appropriate compressed bits_per_pixel based on 3232 * source and sink capabilities. 3233 * 3234 * @src_fraction_bpp: fractional bpp supported by the source 3235 * @slice_width: dsc slice width supported by the source and sink 3236 * @num_slices: num of slices supported by the source and sink 3237 * @output_format: video output format 3238 * @hdmi_all_bpp: sink supports decoding of 1/16th bpp setting 3239 * @hdmi_max_chunk_bytes: max bytes in a line of chunks supported by sink 3240 * 3241 * @return: compressed bits_per_pixel in step of 1/16 of bits_per_pixel 3242 */ 3243 int 3244 intel_hdmi_dsc_get_bpp(int src_fractional_bpp, int slice_width, int num_slices, 3245 int output_format, bool hdmi_all_bpp, 3246 int hdmi_max_chunk_bytes) 3247 { 3248 int max_dsc_bpp, min_dsc_bpp; 3249 int target_bytes; 3250 bool bpp_found = false; 3251 int bpp_decrement_x16; 3252 int bpp_target; 3253 int bpp_target_x16; 3254 3255 /* 3256 * Get min bpp and max bpp as per Table 7.23, in HDMI2.1 spec 3257 * Start with the max bpp and keep on decrementing with 3258 * fractional bpp, if supported by PCON DSC encoder 3259 * 3260 * for each bpp we check if no of bytes can be supported by HDMI sink 3261 */ 3262 3263 /* Assuming: bpc as 8*/ 3264 if (output_format == INTEL_OUTPUT_FORMAT_YCBCR420) { 3265 min_dsc_bpp = 6; 3266 max_dsc_bpp = 3 * 4; /* 3*bpc/2 */ 3267 } else if (output_format == INTEL_OUTPUT_FORMAT_YCBCR444 || 3268 output_format == INTEL_OUTPUT_FORMAT_RGB) { 3269 min_dsc_bpp = 8; 3270 max_dsc_bpp = 3 * 8; /* 3*bpc */ 3271 } else { 3272 /* Assuming 4:2:2 encoding */ 3273 min_dsc_bpp = 7; 3274 max_dsc_bpp = 2 * 8; /* 2*bpc */ 3275 } 3276 3277 /* 3278 * Taking into account if all dsc_all_bpp supported by HDMI2.1 sink 3279 * Section 7.7.34 : Source shall not enable compressed Video 3280 * Transport with bpp_target settings above 12 bpp unless 3281 * DSC_all_bpp is set to 1. 3282 */ 3283 if (!hdmi_all_bpp) 3284 max_dsc_bpp = min(max_dsc_bpp, 12); 3285 3286 /* 3287 * The Sink has a limit of compressed data in bytes for a scanline, 3288 * as described in max_chunk_bytes field in HFVSDB block of edid. 3289 * The no. of bytes depend on the target bits per pixel that the 3290 * source configures. So we start with the max_bpp and calculate 3291 * the target_chunk_bytes. We keep on decrementing the target_bpp, 3292 * till we get the target_chunk_bytes just less than what the sink's 3293 * max_chunk_bytes, or else till we reach the min_dsc_bpp. 3294 * 3295 * The decrement is according to the fractional support from PCON DSC 3296 * encoder. For fractional BPP we use bpp_target as a multiple of 16. 3297 * 3298 * bpp_target_x16 = bpp_target * 16 3299 * So we need to decrement by {1, 2, 4, 8, 16} for fractional bpps 3300 * {1/16, 1/8, 1/4, 1/2, 1} respectively. 3301 */ 3302 3303 bpp_target = max_dsc_bpp; 3304 3305 /* src does not support fractional bpp implies decrement by 16 for bppx16 */ 3306 if (!src_fractional_bpp) 3307 src_fractional_bpp = 1; 3308 bpp_decrement_x16 = DIV_ROUND_UP(16, src_fractional_bpp); 3309 bpp_target_x16 = (bpp_target * 16) - bpp_decrement_x16; 3310 3311 while (bpp_target_x16 > (min_dsc_bpp * 16)) { 3312 int bpp; 3313 3314 bpp = DIV_ROUND_UP(bpp_target_x16, 16); 3315 target_bytes = DIV_ROUND_UP((num_slices * slice_width * bpp), 8); 3316 if (target_bytes <= hdmi_max_chunk_bytes) { 3317 bpp_found = true; 3318 break; 3319 } 3320 bpp_target_x16 -= bpp_decrement_x16; 3321 } 3322 if (bpp_found) 3323 return bpp_target_x16; 3324 3325 return 0; 3326 } 3327