1 /* $NetBSD: amdgpu_info_packet.c,v 1.2 2021/12/18 23:45:07 riastradh Exp $ */ 2 3 /* 4 * Copyright 2018 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: AMD 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_info_packet.c,v 1.2 2021/12/18 23:45:07 riastradh Exp $"); 30 31 #include "mod_info_packet.h" 32 #include "core_types.h" 33 #include "dc_types.h" 34 #include "mod_shared.h" 35 #include "mod_freesync.h" 36 #include "dc.h" 37 38 enum vsc_packet_revision { 39 vsc_packet_undefined = 0, 40 //01h = VSC SDP supports only 3D stereo. 41 vsc_packet_rev1 = 1, 42 //02h = 3D stereo + PSR. 43 vsc_packet_rev2 = 2, 44 //03h = 3D stereo + PSR2. 45 vsc_packet_rev3 = 3, 46 //04h = 3D stereo + PSR/PSR2 + Y-coordinate. 47 vsc_packet_rev4 = 4, 48 //05h = 3D stereo + PSR/PSR2 + Y-coordinate + Pixel Encoding/Colorimetry Format 49 vsc_packet_rev5 = 5, 50 }; 51 52 #define HDMI_INFOFRAME_TYPE_VENDOR 0x81 53 #define HF_VSIF_VERSION 1 54 55 // VTEM Byte Offset 56 #define VTEM_PB0 0 57 #define VTEM_PB1 1 58 #define VTEM_PB2 2 59 #define VTEM_PB3 3 60 #define VTEM_PB4 4 61 #define VTEM_PB5 5 62 #define VTEM_PB6 6 63 64 #define VTEM_MD0 7 65 #define VTEM_MD1 8 66 #define VTEM_MD2 9 67 #define VTEM_MD3 10 68 69 70 // VTEM Byte Masks 71 //PB0 72 #define MASK_VTEM_PB0__RESERVED0 0x01 73 #define MASK_VTEM_PB0__SYNC 0x02 74 #define MASK_VTEM_PB0__VFR 0x04 75 #define MASK_VTEM_PB0__AFR 0x08 76 #define MASK_VTEM_PB0__DS_TYPE 0x30 77 //0: Periodic pseudo-static EM Data Set 78 //1: Periodic dynamic EM Data Set 79 //2: Unique EM Data Set 80 //3: Reserved 81 #define MASK_VTEM_PB0__END 0x40 82 #define MASK_VTEM_PB0__NEW 0x80 83 84 //PB1 85 #define MASK_VTEM_PB1__RESERVED1 0xFF 86 87 //PB2 88 #define MASK_VTEM_PB2__ORGANIZATION_ID 0xFF 89 //0: This is a Vendor Specific EM Data Set 90 //1: This EM Data Set is defined by This Specification (HDMI 2.1 r102.clean) 91 //2: This EM Data Set is defined by CTA-861-G 92 //3: This EM Data Set is defined by VESA 93 //PB3 94 #define MASK_VTEM_PB3__DATA_SET_TAG_MSB 0xFF 95 //PB4 96 #define MASK_VTEM_PB4__DATA_SET_TAG_LSB 0xFF 97 //PB5 98 #define MASK_VTEM_PB5__DATA_SET_LENGTH_MSB 0xFF 99 //PB6 100 #define MASK_VTEM_PB6__DATA_SET_LENGTH_LSB 0xFF 101 102 103 104 //PB7-27 (20 bytes): 105 //PB7 = MD0 106 #define MASK_VTEM_MD0__VRR_EN 0x01 107 #define MASK_VTEM_MD0__M_CONST 0x02 108 #define MASK_VTEM_MD0__RESERVED2 0x0C 109 #define MASK_VTEM_MD0__FVA_FACTOR_M1 0xF0 110 111 //MD1 112 #define MASK_VTEM_MD1__BASE_VFRONT 0xFF 113 114 //MD2 115 #define MASK_VTEM_MD2__BASE_REFRESH_RATE_98 0x03 116 #define MASK_VTEM_MD2__RB 0x04 117 #define MASK_VTEM_MD2__RESERVED3 0xF8 118 119 //MD3 120 #define MASK_VTEM_MD3__BASE_REFRESH_RATE_07 0xFF 121 122 enum ColorimetryRGBDP { 123 ColorimetryRGB_DP_sRGB = 0, 124 ColorimetryRGB_DP_AdobeRGB = 3, 125 ColorimetryRGB_DP_P3 = 4, 126 ColorimetryRGB_DP_CustomColorProfile = 5, 127 ColorimetryRGB_DP_ITU_R_BT2020RGB = 6, 128 }; 129 enum ColorimetryYCCDP { 130 ColorimetryYCC_DP_ITU601 = 0, 131 ColorimetryYCC_DP_ITU709 = 1, 132 ColorimetryYCC_DP_AdobeYCC = 5, 133 ColorimetryYCC_DP_ITU2020YCC = 6, 134 ColorimetryYCC_DP_ITU2020YCbCr = 7, 135 }; 136 137 void mod_build_vsc_infopacket(const struct dc_stream_state *stream, 138 struct dc_info_packet *info_packet, 139 bool *use_vsc_sdp_for_colorimetry) 140 { 141 unsigned int vsc_packet_revision = vsc_packet_undefined; 142 unsigned int i; 143 unsigned int pixelEncoding = 0; 144 unsigned int colorimetryFormat = 0; 145 bool stereo3dSupport = false; 146 147 /* Initialize first, later if infopacket is valid determine if VSC SDP 148 * should be used to signal colorimetry format and pixel encoding. 149 */ 150 *use_vsc_sdp_for_colorimetry = false; 151 152 if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE) { 153 vsc_packet_revision = vsc_packet_rev1; 154 stereo3dSupport = true; 155 } 156 157 /*VSC packet set to 2 when DP revision >= 1.2*/ 158 if (stream->psr_version != 0) 159 vsc_packet_revision = vsc_packet_rev2; 160 161 /* Update to revision 5 for extended colorimetry support for DPCD 1.4+ */ 162 if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 && 163 stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED) 164 vsc_packet_revision = vsc_packet_rev5; 165 166 /* VSC packet not needed based on the features 167 * supported by this DP display 168 */ 169 if (vsc_packet_revision == vsc_packet_undefined) 170 return; 171 172 if (vsc_packet_revision == vsc_packet_rev2) { 173 /* Secondary-data Packet ID = 0*/ 174 info_packet->hb0 = 0x00; 175 /* 07h - Packet Type Value indicating Video 176 * Stream Configuration packet 177 */ 178 info_packet->hb1 = 0x07; 179 /* 02h = VSC SDP supporting 3D stereo and PSR 180 * (applies to eDP v1.3 or higher). 181 */ 182 info_packet->hb2 = 0x02; 183 /* 08h = VSC packet supporting 3D stereo + PSR 184 * (HB2 = 02h). 185 */ 186 info_packet->hb3 = 0x08; 187 188 for (i = 0; i < 28; i++) 189 info_packet->sb[i] = 0; 190 191 info_packet->valid = true; 192 } 193 194 if (vsc_packet_revision == vsc_packet_rev1) { 195 196 info_packet->hb0 = 0x00; // Secondary-data Packet ID = 0 197 info_packet->hb1 = 0x07; // 07h = Packet Type Value indicating Video Stream Configuration packet 198 info_packet->hb2 = 0x01; // 01h = Revision number. VSC SDP supporting 3D stereo only 199 info_packet->hb3 = 0x01; // 01h = VSC SDP supporting 3D stereo only (HB2 = 01h). 200 201 info_packet->valid = true; 202 } 203 204 if (stereo3dSupport) { 205 /* ==============================================================================================================| 206 * A. STEREO 3D 207 * ==============================================================================================================| 208 * VSC Payload (1 byte) From DP1.2 spec 209 * 210 * Bits 3:0 (Stereo Interface Method Code) | Bits 7:4 (Stereo Interface Method Specific Parameter) 211 * ----------------------------------------------------------------------------------------------------- 212 * 0 = Non Stereo Video | Must be set to 0x0 213 * ----------------------------------------------------------------------------------------------------- 214 * 1 = Frame/Field Sequential | 0x0: L + R view indication based on MISC1 bit 2:1 215 * | 0x1: Right when Stereo Signal = 1 216 * | 0x2: Left when Stereo Signal = 1 217 * | (others reserved) 218 * ----------------------------------------------------------------------------------------------------- 219 * 2 = Stacked Frame | 0x0: Left view is on top and right view on bottom 220 * | (others reserved) 221 * ----------------------------------------------------------------------------------------------------- 222 * 3 = Pixel Interleaved | 0x0: horiz interleaved, right view pixels on even lines 223 * | 0x1: horiz interleaved, right view pixels on odd lines 224 * | 0x2: checker board, start with left view pixel 225 * | 0x3: vertical interleaved, start with left view pixels 226 * | 0x4: vertical interleaved, start with right view pixels 227 * | (others reserved) 228 * ----------------------------------------------------------------------------------------------------- 229 * 4 = Side-by-side | 0x0: left half represents left eye view 230 * | 0x1: left half represents right eye view 231 */ 232 switch (stream->timing.timing_3d_format) { 233 case TIMING_3D_FORMAT_HW_FRAME_PACKING: 234 case TIMING_3D_FORMAT_SW_FRAME_PACKING: 235 case TIMING_3D_FORMAT_TOP_AND_BOTTOM: 236 case TIMING_3D_FORMAT_TB_SW_PACKED: 237 info_packet->sb[0] = 0x02; // Stacked Frame, Left view is on top and right view on bottom. 238 break; 239 case TIMING_3D_FORMAT_DP_HDMI_INBAND_FA: 240 case TIMING_3D_FORMAT_INBAND_FA: 241 info_packet->sb[0] = 0x01; // Frame/Field Sequential, L + R view indication based on MISC1 bit 2:1 242 break; 243 case TIMING_3D_FORMAT_SIDE_BY_SIDE: 244 case TIMING_3D_FORMAT_SBS_SW_PACKED: 245 info_packet->sb[0] = 0x04; // Side-by-side 246 break; 247 default: 248 info_packet->sb[0] = 0x00; // No Stereo Video, Shall be cleared to 0x0. 249 break; 250 } 251 252 } 253 254 /* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication. 255 * Added in DP1.3, a DP Source device is allowed to indicate the pixel encoding/colorimetry 256 * format to the DP Sink device with VSC SDP only when the DP Sink device supports it 257 * (i.e., VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit in the DPRX_FEATURE_ENUMERATION_LIST 258 * register (DPCD Address 02210h, bit 3) is set to 1). 259 * (Requires VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit set to 1 in DPCD 02210h. This 260 * DPCD register is exposed in the new Extended Receiver Capability field for DPCD Rev. 1.4 261 * (and higher). When MISC1. bit 6. is Set to 1, a Source device uses a VSC SDP to indicate 262 * the Pixel Encoding/Colorimetry Format and that a Sink device must ignore MISC1, bit 7, and 263 * MISC0, bits 7:1 (MISC1, bit 7. and MISC0, bits 7:1 become "don't care").) 264 */ 265 if (vsc_packet_revision == vsc_packet_rev5) { 266 /* Secondary-data Packet ID = 0 */ 267 info_packet->hb0 = 0x00; 268 /* 07h - Packet Type Value indicating Video Stream Configuration packet */ 269 info_packet->hb1 = 0x07; 270 /* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication. */ 271 info_packet->hb2 = 0x05; 272 /* 13h = VSC SDP supporting 3D stereo, + PSR2, + Pixel Encoding/Colorimetry Format indication (HB2 = 05h). */ 273 info_packet->hb3 = 0x13; 274 275 info_packet->valid = true; 276 277 /* If we are using VSC SDP revision 05h, use this to signal for 278 * colorimetry format and pixel encoding. HW should later be 279 * programmed to set MSA MISC1 bit 6 to indicate ignore 280 * colorimetry format and pixel encoding in the MSA. 281 */ 282 *use_vsc_sdp_for_colorimetry = true; 283 284 /* Set VSC SDP fields for pixel encoding and colorimetry format from DP 1.3 specs 285 * Data Bytes DB 18~16 286 * Bits 3:0 (Colorimetry Format) | Bits 7:4 (Pixel Encoding) 287 * ---------------------------------------------------------------------------------------------------- 288 * 0x0 = sRGB | 0 = RGB 289 * 0x1 = RGB Wide Gamut Fixed Point 290 * 0x2 = RGB Wide Gamut Floating Point 291 * 0x3 = AdobeRGB 292 * 0x4 = DCI-P3 293 * 0x5 = CustomColorProfile 294 * (others reserved) 295 * ---------------------------------------------------------------------------------------------------- 296 * 0x0 = ITU-R BT.601 | 1 = YCbCr444 297 * 0x1 = ITU-R BT.709 298 * 0x2 = xvYCC601 299 * 0x3 = xvYCC709 300 * 0x4 = sYCC601 301 * 0x5 = AdobeYCC601 302 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc 303 * 0x7 = ITU-R BT.2020 Y'C'bC'r 304 * (others reserved) 305 * ---------------------------------------------------------------------------------------------------- 306 * 0x0 = ITU-R BT.601 | 2 = YCbCr422 307 * 0x1 = ITU-R BT.709 308 * 0x2 = xvYCC601 309 * 0x3 = xvYCC709 310 * 0x4 = sYCC601 311 * 0x5 = AdobeYCC601 312 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc 313 * 0x7 = ITU-R BT.2020 Y'C'bC'r 314 * (others reserved) 315 * ---------------------------------------------------------------------------------------------------- 316 * 0x0 = ITU-R BT.601 | 3 = YCbCr420 317 * 0x1 = ITU-R BT.709 318 * 0x2 = xvYCC601 319 * 0x3 = xvYCC709 320 * 0x4 = sYCC601 321 * 0x5 = AdobeYCC601 322 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc 323 * 0x7 = ITU-R BT.2020 Y'C'bC'r 324 * (others reserved) 325 * ---------------------------------------------------------------------------------------------------- 326 * 0x0 =DICOM Part14 Grayscale | 4 = Yonly 327 * Display Function 328 * (others reserved) 329 */ 330 331 /* Set Pixel Encoding */ 332 switch (stream->timing.pixel_encoding) { 333 case PIXEL_ENCODING_RGB: 334 pixelEncoding = 0x0; /* RGB = 0h */ 335 break; 336 case PIXEL_ENCODING_YCBCR444: 337 pixelEncoding = 0x1; /* YCbCr444 = 1h */ 338 break; 339 case PIXEL_ENCODING_YCBCR422: 340 pixelEncoding = 0x2; /* YCbCr422 = 2h */ 341 break; 342 case PIXEL_ENCODING_YCBCR420: 343 pixelEncoding = 0x3; /* YCbCr420 = 3h */ 344 break; 345 default: 346 pixelEncoding = 0x0; /* default RGB = 0h */ 347 break; 348 } 349 350 /* Set Colorimetry format based on pixel encoding */ 351 switch (stream->timing.pixel_encoding) { 352 case PIXEL_ENCODING_RGB: 353 if ((stream->output_color_space == COLOR_SPACE_SRGB) || 354 (stream->output_color_space == COLOR_SPACE_SRGB_LIMITED)) 355 colorimetryFormat = ColorimetryRGB_DP_sRGB; 356 else if (stream->output_color_space == COLOR_SPACE_ADOBERGB) 357 colorimetryFormat = ColorimetryRGB_DP_AdobeRGB; 358 else if ((stream->output_color_space == COLOR_SPACE_2020_RGB_FULLRANGE) || 359 (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE)) 360 colorimetryFormat = ColorimetryRGB_DP_ITU_R_BT2020RGB; 361 break; 362 363 case PIXEL_ENCODING_YCBCR444: 364 case PIXEL_ENCODING_YCBCR422: 365 case PIXEL_ENCODING_YCBCR420: 366 /* Note: xvYCC probably not supported correctly here on DP since colorspace translation 367 * loses distinction between BT601 vs xvYCC601 in translation 368 */ 369 if (stream->output_color_space == COLOR_SPACE_YCBCR601) 370 colorimetryFormat = ColorimetryYCC_DP_ITU601; 371 else if (stream->output_color_space == COLOR_SPACE_YCBCR709) 372 colorimetryFormat = ColorimetryYCC_DP_ITU709; 373 else if (stream->output_color_space == COLOR_SPACE_ADOBERGB) 374 colorimetryFormat = ColorimetryYCC_DP_AdobeYCC; 375 else if (stream->output_color_space == COLOR_SPACE_2020_YCBCR) 376 colorimetryFormat = ColorimetryYCC_DP_ITU2020YCbCr; 377 break; 378 379 default: 380 colorimetryFormat = ColorimetryRGB_DP_sRGB; 381 break; 382 } 383 384 info_packet->sb[16] = (pixelEncoding << 4) | colorimetryFormat; 385 386 /* Set color depth */ 387 switch (stream->timing.display_color_depth) { 388 case COLOR_DEPTH_666: 389 /* NOTE: This is actually not valid for YCbCr pixel encoding to have 6 bpc 390 * as of DP1.4 spec, but value of 0 probably reserved here for potential future use. 391 */ 392 info_packet->sb[17] = 0; 393 break; 394 case COLOR_DEPTH_888: 395 info_packet->sb[17] = 1; 396 break; 397 case COLOR_DEPTH_101010: 398 info_packet->sb[17] = 2; 399 break; 400 case COLOR_DEPTH_121212: 401 info_packet->sb[17] = 3; 402 break; 403 /*case COLOR_DEPTH_141414: -- NO SUCH FORMAT IN DP SPEC */ 404 case COLOR_DEPTH_161616: 405 info_packet->sb[17] = 4; 406 break; 407 default: 408 info_packet->sb[17] = 0; 409 break; 410 } 411 412 /* all YCbCr are always limited range */ 413 if ((stream->output_color_space == COLOR_SPACE_SRGB_LIMITED) || 414 (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE) || 415 (pixelEncoding != 0x0)) { 416 info_packet->sb[17] |= 0x80; /* DB17 bit 7 set to 1 for CEA timing. */ 417 } 418 419 /* Content Type (Bits 2:0) 420 * 0 = Not defined. 421 * 1 = Graphics. 422 * 2 = Photo. 423 * 3 = Video. 424 * 4 = Game. 425 */ 426 info_packet->sb[18] = 0; 427 } 428 } 429 430 /** 431 ***************************************************************************** 432 * Function: mod_build_hf_vsif_infopacket 433 * 434 * @brief 435 * Prepare HDMI Vendor Specific info frame. 436 * Follows HDMI Spec to build up Vendor Specific info frame 437 * 438 * @param [in] stream: contains data we may need to construct VSIF (i.e. timing_3d_format, etc.) 439 * @param [out] info_packet: output structure where to store VSIF 440 ***************************************************************************** 441 */ 442 void mod_build_hf_vsif_infopacket(const struct dc_stream_state *stream, 443 struct dc_info_packet *info_packet, int ALLMEnabled, int ALLMValue) 444 { 445 unsigned int length = 5; 446 bool hdmi_vic_mode = false; 447 uint8_t checksum = 0; 448 uint32_t i = 0; 449 enum dc_timing_3d_format format; 450 bool bALLM = (bool)ALLMEnabled; 451 bool bALLMVal = (bool)ALLMValue; 452 453 info_packet->valid = false; 454 format = stream->timing.timing_3d_format; 455 if (stream->view_format == VIEW_3D_FORMAT_NONE) 456 format = TIMING_3D_FORMAT_NONE; 457 458 if (stream->timing.hdmi_vic != 0 459 && stream->timing.h_total >= 3840 460 && stream->timing.v_total >= 2160 461 && format == TIMING_3D_FORMAT_NONE) 462 hdmi_vic_mode = true; 463 464 if ((format == TIMING_3D_FORMAT_NONE) && !hdmi_vic_mode && !bALLM) 465 return; 466 467 info_packet->sb[1] = 0x03; 468 info_packet->sb[2] = 0x0C; 469 info_packet->sb[3] = 0x00; 470 471 if (bALLM) { 472 info_packet->sb[1] = 0xD8; 473 info_packet->sb[2] = 0x5D; 474 info_packet->sb[3] = 0xC4; 475 info_packet->sb[4] = HF_VSIF_VERSION; 476 } 477 478 if (format != TIMING_3D_FORMAT_NONE) 479 info_packet->sb[4] = (2 << 5); 480 481 else if (hdmi_vic_mode) 482 info_packet->sb[4] = (1 << 5); 483 484 switch (format) { 485 case TIMING_3D_FORMAT_HW_FRAME_PACKING: 486 case TIMING_3D_FORMAT_SW_FRAME_PACKING: 487 info_packet->sb[5] = (0x0 << 4); 488 break; 489 490 case TIMING_3D_FORMAT_SIDE_BY_SIDE: 491 case TIMING_3D_FORMAT_SBS_SW_PACKED: 492 info_packet->sb[5] = (0x8 << 4); 493 length = 6; 494 break; 495 496 case TIMING_3D_FORMAT_TOP_AND_BOTTOM: 497 case TIMING_3D_FORMAT_TB_SW_PACKED: 498 info_packet->sb[5] = (0x6 << 4); 499 break; 500 501 default: 502 break; 503 } 504 505 if (hdmi_vic_mode) 506 info_packet->sb[5] = stream->timing.hdmi_vic; 507 508 info_packet->hb0 = HDMI_INFOFRAME_TYPE_VENDOR; 509 info_packet->hb1 = 0x01; 510 info_packet->hb2 = (uint8_t) (length); 511 512 if (bALLM) 513 info_packet->sb[5] = (info_packet->sb[5] & ~0x02) | (bALLMVal << 1); 514 515 checksum += info_packet->hb0; 516 checksum += info_packet->hb1; 517 checksum += info_packet->hb2; 518 519 for (i = 1; i <= length; i++) 520 checksum += info_packet->sb[i]; 521 522 info_packet->sb[0] = (uint8_t) (0x100 - checksum); 523 524 info_packet->valid = true; 525 } 526 527
Indexes created Sun Sep 21 15:09:59 GMT 2025