1 /* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * Copyright 2009 Christian König. 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: Christian König 25 */ 26 #include <linux/hdmi.h> 27 #include <linux/gcd.h> 28 #include <drm/drmP.h> 29 #include <drm/radeon_drm.h> 30 #include "radeon.h" 31 #include "radeon_asic.h" 32 #include "r600d.h" 33 #include "atom.h" 34 35 /* 36 * HDMI color format 37 */ 38 enum r600_hdmi_color_format { 39 RGB = 0, 40 YCC_422 = 1, 41 YCC_444 = 2 42 }; 43 44 /* 45 * IEC60958 status bits 46 */ 47 enum r600_hdmi_iec_status_bits { 48 AUDIO_STATUS_DIG_ENABLE = 0x01, 49 AUDIO_STATUS_V = 0x02, 50 AUDIO_STATUS_VCFG = 0x04, 51 AUDIO_STATUS_EMPHASIS = 0x08, 52 AUDIO_STATUS_COPYRIGHT = 0x10, 53 AUDIO_STATUS_NONAUDIO = 0x20, 54 AUDIO_STATUS_PROFESSIONAL = 0x40, 55 AUDIO_STATUS_LEVEL = 0x80 56 }; 57 58 static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = { 59 /* 32kHz 44.1kHz 48kHz */ 60 /* Clock N CTS N CTS N CTS */ 61 { 25175, 4096, 25175, 28224, 125875, 6144, 25175 }, /* 25,20/1.001 MHz */ 62 { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */ 63 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */ 64 { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */ 65 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */ 66 { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */ 67 { 74176, 4096, 74176, 5733, 75335, 6144, 74176 }, /* 74.25/1.001 MHz */ 68 { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */ 69 { 148352, 4096, 148352, 5733, 150670, 6144, 148352 }, /* 148.50/1.001 MHz */ 70 { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */ 71 }; 72 73 74 /* 75 * calculate CTS and N values if they are not found in the table 76 */ 77 static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int *N, int freq) 78 { 79 int n, cts; 80 unsigned long div, mul; 81 82 /* Safe, but overly large values */ 83 n = 128 * freq; 84 cts = clock * 1000; 85 86 /* Smallest valid fraction */ 87 div = gcd(n, cts); 88 89 n /= div; 90 cts /= div; 91 92 /* 93 * The optimal N is 128*freq/1000. Calculate the closest larger 94 * value that doesn't truncate any bits. 95 */ 96 mul = ((128*freq/1000) + (n-1))/n; 97 98 n *= mul; 99 cts *= mul; 100 101 /* Check that we are in spec (not always possible) */ 102 if (n < (128*freq/1500)) 103 printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n"); 104 if (n > (128*freq/300)) 105 printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n"); 106 107 *N = n; 108 *CTS = cts; 109 110 DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n", 111 *N, *CTS, freq); 112 } 113 114 struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock) 115 { 116 struct radeon_hdmi_acr res; 117 u8 i; 118 119 /* Precalculated values for common clocks */ 120 for (i = 0; i < ARRAY_SIZE(r600_hdmi_predefined_acr); i++) { 121 if (r600_hdmi_predefined_acr[i].clock == clock) 122 return r600_hdmi_predefined_acr[i]; 123 } 124 125 /* And odd clocks get manually calculated */ 126 r600_hdmi_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000); 127 r600_hdmi_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100); 128 r600_hdmi_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000); 129 130 return res; 131 } 132 133 /* 134 * update the N and CTS parameters for a given pixel clock rate 135 */ 136 static void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock) 137 { 138 struct drm_device *dev = encoder->dev; 139 struct radeon_device *rdev = dev->dev_private; 140 struct radeon_hdmi_acr acr = r600_hdmi_acr(clock); 141 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 142 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 143 uint32_t offset = dig->afmt->offset; 144 145 WREG32(HDMI0_ACR_32_0 + offset, HDMI0_ACR_CTS_32(acr.cts_32khz)); 146 WREG32(HDMI0_ACR_32_1 + offset, acr.n_32khz); 147 148 WREG32(HDMI0_ACR_44_0 + offset, HDMI0_ACR_CTS_44(acr.cts_44_1khz)); 149 WREG32(HDMI0_ACR_44_1 + offset, acr.n_44_1khz); 150 151 WREG32(HDMI0_ACR_48_0 + offset, HDMI0_ACR_CTS_48(acr.cts_48khz)); 152 WREG32(HDMI0_ACR_48_1 + offset, acr.n_48khz); 153 } 154 155 /* 156 * build a HDMI Video Info Frame 157 */ 158 static void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder, 159 void *buffer, size_t size) 160 { 161 struct drm_device *dev = encoder->dev; 162 struct radeon_device *rdev = dev->dev_private; 163 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 164 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 165 uint32_t offset = dig->afmt->offset; 166 uint8_t *frame = buffer + 3; 167 uint8_t *header = buffer; 168 169 WREG32(HDMI0_AVI_INFO0 + offset, 170 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 171 WREG32(HDMI0_AVI_INFO1 + offset, 172 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); 173 WREG32(HDMI0_AVI_INFO2 + offset, 174 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); 175 WREG32(HDMI0_AVI_INFO3 + offset, 176 frame[0xC] | (frame[0xD] << 8) | (header[1] << 24)); 177 } 178 179 /* 180 * build a Audio Info Frame 181 */ 182 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder, 183 const void *buffer, size_t size) 184 { 185 struct drm_device *dev = encoder->dev; 186 struct radeon_device *rdev = dev->dev_private; 187 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 188 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 189 uint32_t offset = dig->afmt->offset; 190 const u8 *frame = buffer + 3; 191 192 WREG32(HDMI0_AUDIO_INFO0 + offset, 193 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 194 WREG32(HDMI0_AUDIO_INFO1 + offset, 195 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24)); 196 } 197 198 /* 199 * test if audio buffer is filled enough to start playing 200 */ 201 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder) 202 { 203 struct drm_device *dev = encoder->dev; 204 struct radeon_device *rdev = dev->dev_private; 205 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 206 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 207 uint32_t offset = dig->afmt->offset; 208 209 return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0; 210 } 211 212 /* 213 * have buffer status changed since last call? 214 */ 215 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder) 216 { 217 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 218 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 219 int status, result; 220 221 if (!dig->afmt || !dig->afmt->enabled) 222 return 0; 223 224 status = r600_hdmi_is_audio_buffer_filled(encoder); 225 result = dig->afmt->last_buffer_filled_status != status; 226 dig->afmt->last_buffer_filled_status = status; 227 228 return result; 229 } 230 231 /* 232 * write the audio workaround status to the hardware 233 */ 234 static void r600_hdmi_audio_workaround(struct drm_encoder *encoder) 235 { 236 struct drm_device *dev = encoder->dev; 237 struct radeon_device *rdev = dev->dev_private; 238 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 239 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 240 uint32_t offset = dig->afmt->offset; 241 bool hdmi_audio_workaround = false; /* FIXME */ 242 u32 value; 243 244 if (!hdmi_audio_workaround || 245 r600_hdmi_is_audio_buffer_filled(encoder)) 246 value = 0; /* disable workaround */ 247 else 248 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */ 249 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, 250 value, ~HDMI0_AUDIO_TEST_EN); 251 } 252 253 void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock) 254 { 255 struct drm_device *dev = encoder->dev; 256 struct radeon_device *rdev = dev->dev_private; 257 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 258 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 259 u32 base_rate = 24000; 260 u32 max_ratio = clock / base_rate; 261 u32 dto_phase; 262 u32 dto_modulo = clock; 263 u32 wallclock_ratio; 264 u32 dto_cntl; 265 266 if (!dig || !dig->afmt) 267 return; 268 269 if (max_ratio >= 8) { 270 dto_phase = 192 * 1000; 271 wallclock_ratio = 3; 272 } else if (max_ratio >= 4) { 273 dto_phase = 96 * 1000; 274 wallclock_ratio = 2; 275 } else if (max_ratio >= 2) { 276 dto_phase = 48 * 1000; 277 wallclock_ratio = 1; 278 } else { 279 dto_phase = 24 * 1000; 280 wallclock_ratio = 0; 281 } 282 283 /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT. 284 * doesn't matter which one you use. Just use the first one. 285 */ 286 /* XXX two dtos; generally use dto0 for hdmi */ 287 /* Express [24MHz / target pixel clock] as an exact rational 288 * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE 289 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator 290 */ 291 if (ASIC_IS_DCE32(rdev)) { 292 if (dig->dig_encoder == 0) { 293 dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK; 294 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio); 295 WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl); 296 WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase); 297 WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo); 298 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ 299 } else { 300 dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK; 301 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio); 302 WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl); 303 WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase); 304 WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo); 305 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ 306 } 307 } else { 308 /* according to the reg specs, this should DCE3.2 only, but in 309 * practice it seems to cover DCE2.0/3.0/3.1 as well. 310 */ 311 if (dig->dig_encoder == 0) { 312 WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100); 313 WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); 314 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ 315 } else { 316 WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100); 317 WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); 318 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ 319 } 320 } 321 } 322 323 static void dce3_2_afmt_write_speaker_allocation(struct drm_encoder *encoder) 324 { 325 struct radeon_device *rdev = encoder->dev->dev_private; 326 struct drm_connector *connector; 327 struct radeon_connector *radeon_connector = NULL; 328 u32 tmp; 329 u8 *sadb; 330 int sad_count; 331 332 /* XXX: setting this register causes hangs on some asics */ 333 return; 334 335 list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) { 336 if (connector->encoder == encoder) { 337 radeon_connector = to_radeon_connector(connector); 338 break; 339 } 340 } 341 342 if (!radeon_connector) { 343 DRM_ERROR("Couldn't find encoder's connector\n"); 344 return; 345 } 346 347 sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb); 348 if (sad_count < 0) { 349 DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); 350 return; 351 } 352 353 /* program the speaker allocation */ 354 tmp = RREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER); 355 tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK); 356 /* set HDMI mode */ 357 tmp |= HDMI_CONNECTION; 358 if (sad_count) 359 tmp |= SPEAKER_ALLOCATION(sadb[0]); 360 else 361 tmp |= SPEAKER_ALLOCATION(5); /* stereo */ 362 WREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp); 363 364 kfree(sadb); 365 } 366 367 static void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder) 368 { 369 struct radeon_device *rdev = encoder->dev->dev_private; 370 struct drm_connector *connector; 371 struct radeon_connector *radeon_connector = NULL; 372 struct cea_sad *sads; 373 int i, sad_count; 374 375 static const u16 eld_reg_to_type[][2] = { 376 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM }, 377 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 }, 378 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 }, 379 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 }, 380 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 }, 381 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC }, 382 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS }, 383 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC }, 384 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 }, 385 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD }, 386 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP }, 387 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO }, 388 }; 389 390 list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) { 391 if (connector->encoder == encoder) { 392 radeon_connector = to_radeon_connector(connector); 393 break; 394 } 395 } 396 397 if (!radeon_connector) { 398 DRM_ERROR("Couldn't find encoder's connector\n"); 399 return; 400 } 401 402 sad_count = drm_edid_to_sad(radeon_connector->edid, &sads); 403 if (sad_count < 0) { 404 DRM_ERROR("Couldn't read SADs: %d\n", sad_count); 405 return; 406 } 407 BUG_ON(!sads); 408 409 for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) { 410 u32 value = 0; 411 u8 stereo_freqs = 0; 412 int max_channels = -1; 413 int j; 414 415 for (j = 0; j < sad_count; j++) { 416 struct cea_sad *sad = &sads[j]; 417 418 if (sad->format == eld_reg_to_type[i][1]) { 419 if (sad->channels > max_channels) { 420 value = MAX_CHANNELS(sad->channels) | 421 DESCRIPTOR_BYTE_2(sad->byte2) | 422 SUPPORTED_FREQUENCIES(sad->freq); 423 max_channels = sad->channels; 424 } 425 426 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM) 427 stereo_freqs |= sad->freq; 428 else 429 break; 430 } 431 } 432 433 value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs); 434 435 WREG32(eld_reg_to_type[i][0], value); 436 } 437 438 kfree(sads); 439 } 440 441 /* 442 * update the info frames with the data from the current display mode 443 */ 444 void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode) 445 { 446 struct drm_device *dev = encoder->dev; 447 struct radeon_device *rdev = dev->dev_private; 448 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 449 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 450 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE]; 451 struct hdmi_avi_infoframe frame; 452 uint32_t offset; 453 ssize_t err; 454 455 if (!dig || !dig->afmt) 456 return; 457 458 /* Silent, r600_hdmi_enable will raise WARN for us */ 459 if (!dig->afmt->enabled) 460 return; 461 offset = dig->afmt->offset; 462 463 r600_audio_set_dto(encoder, mode->clock); 464 465 WREG32(HDMI0_VBI_PACKET_CONTROL + offset, 466 HDMI0_NULL_SEND); /* send null packets when required */ 467 468 WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000); 469 470 if (ASIC_IS_DCE32(rdev)) { 471 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, 472 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ 473 HDMI0_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */ 474 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset, 475 AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */ 476 AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */ 477 } else { 478 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, 479 HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */ 480 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ 481 HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */ 482 HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */ 483 } 484 485 if (ASIC_IS_DCE32(rdev)) { 486 dce3_2_afmt_write_speaker_allocation(encoder); 487 dce3_2_afmt_write_sad_regs(encoder); 488 } 489 490 WREG32(HDMI0_ACR_PACKET_CONTROL + offset, 491 HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */ 492 HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */ 493 494 WREG32(HDMI0_VBI_PACKET_CONTROL + offset, 495 HDMI0_NULL_SEND | /* send null packets when required */ 496 HDMI0_GC_SEND | /* send general control packets */ 497 HDMI0_GC_CONT); /* send general control packets every frame */ 498 499 /* TODO: HDMI0_AUDIO_INFO_UPDATE */ 500 WREG32(HDMI0_INFOFRAME_CONTROL0 + offset, 501 HDMI0_AVI_INFO_SEND | /* enable AVI info frames */ 502 HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */ 503 HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */ 504 HDMI0_AUDIO_INFO_CONT); /* send audio info frames every frame/field */ 505 506 WREG32(HDMI0_INFOFRAME_CONTROL1 + offset, 507 HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */ 508 HDMI0_AUDIO_INFO_LINE(2)); /* anything other than 0 */ 509 510 WREG32(HDMI0_GC + offset, 0); /* unset HDMI0_GC_AVMUTE */ 511 512 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode); 513 if (err < 0) { 514 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); 515 return; 516 } 517 518 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); 519 if (err < 0) { 520 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err); 521 return; 522 } 523 524 r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer)); 525 r600_hdmi_update_ACR(encoder, mode->clock); 526 527 /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */ 528 WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF); 529 WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF); 530 WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001); 531 WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001); 532 533 r600_hdmi_audio_workaround(encoder); 534 } 535 536 /* 537 * update settings with current parameters from audio engine 538 */ 539 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder) 540 { 541 struct drm_device *dev = encoder->dev; 542 struct radeon_device *rdev = dev->dev_private; 543 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 544 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 545 struct r600_audio_pin audio = r600_audio_status(rdev); 546 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 547 struct hdmi_audio_infoframe frame; 548 uint32_t offset; 549 uint32_t iec; 550 ssize_t err; 551 552 if (!dig->afmt || !dig->afmt->enabled) 553 return; 554 offset = dig->afmt->offset; 555 556 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n", 557 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped", 558 audio.channels, audio.rate, audio.bits_per_sample); 559 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", 560 (int)audio.status_bits, (int)audio.category_code); 561 562 iec = 0; 563 if (audio.status_bits & AUDIO_STATUS_PROFESSIONAL) 564 iec |= 1 << 0; 565 if (audio.status_bits & AUDIO_STATUS_NONAUDIO) 566 iec |= 1 << 1; 567 if (audio.status_bits & AUDIO_STATUS_COPYRIGHT) 568 iec |= 1 << 2; 569 if (audio.status_bits & AUDIO_STATUS_EMPHASIS) 570 iec |= 1 << 3; 571 572 iec |= HDMI0_60958_CS_CATEGORY_CODE(audio.category_code); 573 574 switch (audio.rate) { 575 case 32000: 576 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x3); 577 break; 578 case 44100: 579 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x0); 580 break; 581 case 48000: 582 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x2); 583 break; 584 case 88200: 585 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x8); 586 break; 587 case 96000: 588 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xa); 589 break; 590 case 176400: 591 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xc); 592 break; 593 case 192000: 594 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xe); 595 break; 596 } 597 598 WREG32(HDMI0_60958_0 + offset, iec); 599 600 iec = 0; 601 switch (audio.bits_per_sample) { 602 case 16: 603 iec |= HDMI0_60958_CS_WORD_LENGTH(0x2); 604 break; 605 case 20: 606 iec |= HDMI0_60958_CS_WORD_LENGTH(0x3); 607 break; 608 case 24: 609 iec |= HDMI0_60958_CS_WORD_LENGTH(0xb); 610 break; 611 } 612 if (audio.status_bits & AUDIO_STATUS_V) 613 iec |= 0x5 << 16; 614 WREG32_P(HDMI0_60958_1 + offset, iec, ~0x5000f); 615 616 err = hdmi_audio_infoframe_init(&frame); 617 if (err < 0) { 618 DRM_ERROR("failed to setup audio infoframe\n"); 619 return; 620 } 621 622 frame.channels = audio.channels; 623 624 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 625 if (err < 0) { 626 DRM_ERROR("failed to pack audio infoframe\n"); 627 return; 628 } 629 630 r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer)); 631 r600_hdmi_audio_workaround(encoder); 632 } 633 634 /* 635 * enable the HDMI engine 636 */ 637 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable) 638 { 639 struct drm_device *dev = encoder->dev; 640 struct radeon_device *rdev = dev->dev_private; 641 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 642 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 643 u32 hdmi = HDMI0_ERROR_ACK; 644 645 if (!dig || !dig->afmt) 646 return; 647 648 /* Silent, r600_hdmi_enable will raise WARN for us */ 649 if (enable && dig->afmt->enabled) 650 return; 651 if (!enable && !dig->afmt->enabled) 652 return; 653 654 if (enable) 655 dig->afmt->pin = r600_audio_get_pin(rdev); 656 else 657 dig->afmt->pin = NULL; 658 659 /* Older chipsets require setting HDMI and routing manually */ 660 if (!ASIC_IS_DCE3(rdev)) { 661 if (enable) 662 hdmi |= HDMI0_ENABLE; 663 switch (radeon_encoder->encoder_id) { 664 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: 665 if (enable) { 666 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN); 667 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA); 668 } else { 669 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN); 670 } 671 break; 672 case ENCODER_OBJECT_ID_INTERNAL_LVTM1: 673 if (enable) { 674 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN); 675 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA); 676 } else { 677 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN); 678 } 679 break; 680 case ENCODER_OBJECT_ID_INTERNAL_DDI: 681 if (enable) { 682 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN); 683 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA); 684 } else { 685 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN); 686 } 687 break; 688 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1: 689 if (enable) 690 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA); 691 break; 692 default: 693 dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n", 694 radeon_encoder->encoder_id); 695 break; 696 } 697 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi); 698 } 699 700 if (rdev->irq.installed) { 701 /* if irq is available use it */ 702 /* XXX: shouldn't need this on any asics. Double check DCE2/3 */ 703 if (enable) 704 radeon_irq_kms_enable_afmt(rdev, dig->afmt->id); 705 else 706 radeon_irq_kms_disable_afmt(rdev, dig->afmt->id); 707 } 708 709 dig->afmt->enabled = enable; 710 711 DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n", 712 enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id); 713 } 714 715