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 29 #include <drm/radeon_drm.h> 30 #include "radeon.h" 31 #include "radeon_asic.h" 32 #include "radeon_audio.h" 33 #include "r600d.h" 34 #include "atom.h" 35 36 /* 37 * HDMI color format 38 */ 39 enum r600_hdmi_color_format { 40 RGB = 0, 41 YCC_422 = 1, 42 YCC_444 = 2 43 }; 44 45 /* 46 * IEC60958 status bits 47 */ 48 enum r600_hdmi_iec_status_bits { 49 AUDIO_STATUS_DIG_ENABLE = 0x01, 50 AUDIO_STATUS_V = 0x02, 51 AUDIO_STATUS_VCFG = 0x04, 52 AUDIO_STATUS_EMPHASIS = 0x08, 53 AUDIO_STATUS_COPYRIGHT = 0x10, 54 AUDIO_STATUS_NONAUDIO = 0x20, 55 AUDIO_STATUS_PROFESSIONAL = 0x40, 56 AUDIO_STATUS_LEVEL = 0x80 57 }; 58 59 static struct r600_audio_pin r600_audio_status(struct radeon_device *rdev) 60 { 61 struct r600_audio_pin status = {}; 62 uint32_t value; 63 64 value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); 65 66 /* number of channels */ 67 status.channels = (value & 0x7) + 1; 68 69 /* bits per sample */ 70 switch ((value & 0xF0) >> 4) { 71 case 0x0: 72 status.bits_per_sample = 8; 73 break; 74 case 0x1: 75 status.bits_per_sample = 16; 76 break; 77 case 0x2: 78 status.bits_per_sample = 20; 79 break; 80 case 0x3: 81 status.bits_per_sample = 24; 82 break; 83 case 0x4: 84 status.bits_per_sample = 32; 85 break; 86 default: 87 dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n", 88 (int)value); 89 status.bits_per_sample = 16; 90 } 91 92 /* current sampling rate in HZ */ 93 if (value & 0x4000) 94 status.rate = 44100; 95 else 96 status.rate = 48000; 97 status.rate *= ((value >> 11) & 0x7) + 1; 98 status.rate /= ((value >> 8) & 0x7) + 1; 99 100 value = RREG32(R600_AUDIO_STATUS_BITS); 101 102 /* iec 60958 status bits */ 103 status.status_bits = value & 0xff; 104 105 /* iec 60958 category code */ 106 status.category_code = (value >> 8) & 0xff; 107 108 return status; 109 } 110 111 /* 112 * update all hdmi interfaces with current audio parameters 113 */ 114 void r600_audio_update_hdmi(struct work_struct *work) 115 { 116 struct radeon_device *rdev = container_of(work, struct radeon_device, 117 audio_work); 118 struct drm_device *dev = rdev->ddev; 119 struct r600_audio_pin audio_status = r600_audio_status(rdev); 120 struct drm_encoder *encoder; 121 bool changed = false; 122 123 if (rdev->audio.pin[0].channels != audio_status.channels || 124 rdev->audio.pin[0].rate != audio_status.rate || 125 rdev->audio.pin[0].bits_per_sample != audio_status.bits_per_sample || 126 rdev->audio.pin[0].status_bits != audio_status.status_bits || 127 rdev->audio.pin[0].category_code != audio_status.category_code) { 128 rdev->audio.pin[0] = audio_status; 129 changed = true; 130 } 131 132 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 133 if (!radeon_encoder_is_digital(encoder)) 134 continue; 135 if (changed || r600_hdmi_buffer_status_changed(encoder)) 136 r600_hdmi_update_audio_settings(encoder); 137 } 138 } 139 140 /* enable the audio stream */ 141 void r600_audio_enable(struct radeon_device *rdev, 142 struct r600_audio_pin *pin, 143 u8 enable_mask) 144 { 145 u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL); 146 147 if (!pin) 148 return; 149 150 if (enable_mask) { 151 tmp |= AUDIO_ENABLED; 152 if (enable_mask & 1) 153 tmp |= PIN0_AUDIO_ENABLED; 154 if (enable_mask & 2) 155 tmp |= PIN1_AUDIO_ENABLED; 156 if (enable_mask & 4) 157 tmp |= PIN2_AUDIO_ENABLED; 158 if (enable_mask & 8) 159 tmp |= PIN3_AUDIO_ENABLED; 160 } else { 161 tmp &= ~(AUDIO_ENABLED | 162 PIN0_AUDIO_ENABLED | 163 PIN1_AUDIO_ENABLED | 164 PIN2_AUDIO_ENABLED | 165 PIN3_AUDIO_ENABLED); 166 } 167 168 WREG32(AZ_HOT_PLUG_CONTROL, tmp); 169 } 170 171 struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev) 172 { 173 /* only one pin on 6xx-NI */ 174 return &rdev->audio.pin[0]; 175 } 176 177 void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset, 178 const struct radeon_hdmi_acr *acr) 179 { 180 struct drm_device *dev = encoder->dev; 181 struct radeon_device *rdev = dev->dev_private; 182 183 /* DCE 3.0 uses register that's normally for CRC_CONTROL */ 184 uint32_t acr_ctl = ASIC_IS_DCE3(rdev) ? DCE3_HDMI0_ACR_PACKET_CONTROL : 185 HDMI0_ACR_PACKET_CONTROL; 186 WREG32_P(acr_ctl + offset, 187 HDMI0_ACR_SOURCE | /* select SW CTS value */ 188 HDMI0_ACR_AUTO_SEND, /* allow hw to sent ACR packets when required */ 189 ~(HDMI0_ACR_SOURCE | 190 HDMI0_ACR_AUTO_SEND)); 191 192 WREG32_P(HDMI0_ACR_32_0 + offset, 193 HDMI0_ACR_CTS_32(acr->cts_32khz), 194 ~HDMI0_ACR_CTS_32_MASK); 195 WREG32_P(HDMI0_ACR_32_1 + offset, 196 HDMI0_ACR_N_32(acr->n_32khz), 197 ~HDMI0_ACR_N_32_MASK); 198 199 WREG32_P(HDMI0_ACR_44_0 + offset, 200 HDMI0_ACR_CTS_44(acr->cts_44_1khz), 201 ~HDMI0_ACR_CTS_44_MASK); 202 WREG32_P(HDMI0_ACR_44_1 + offset, 203 HDMI0_ACR_N_44(acr->n_44_1khz), 204 ~HDMI0_ACR_N_44_MASK); 205 206 WREG32_P(HDMI0_ACR_48_0 + offset, 207 HDMI0_ACR_CTS_48(acr->cts_48khz), 208 ~HDMI0_ACR_CTS_48_MASK); 209 WREG32_P(HDMI0_ACR_48_1 + offset, 210 HDMI0_ACR_N_48(acr->n_48khz), 211 ~HDMI0_ACR_N_48_MASK); 212 } 213 214 /* 215 * build a HDMI Video Info Frame 216 */ 217 void r600_set_avi_packet(struct radeon_device *rdev, u32 offset, 218 unsigned char *buffer, size_t size) 219 { 220 uint8_t *frame = buffer + 3; 221 222 WREG32(HDMI0_AVI_INFO0 + offset, 223 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 224 WREG32(HDMI0_AVI_INFO1 + offset, 225 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); 226 WREG32(HDMI0_AVI_INFO2 + offset, 227 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); 228 WREG32(HDMI0_AVI_INFO3 + offset, 229 frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24)); 230 231 WREG32_OR(HDMI0_INFOFRAME_CONTROL1 + offset, 232 HDMI0_AVI_INFO_LINE(2)); /* anything other than 0 */ 233 234 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 235 HDMI0_AVI_INFO_SEND | /* enable AVI info frames */ 236 HDMI0_AVI_INFO_CONT); /* send AVI info frames every frame/field */ 237 238 } 239 240 /* 241 * build a Audio Info Frame 242 */ 243 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder, 244 const void *buffer, size_t size) 245 { 246 struct drm_device *dev = encoder->dev; 247 struct radeon_device *rdev = dev->dev_private; 248 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 249 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 250 uint32_t offset = dig->afmt->offset; 251 const u8 *frame = buffer + 3; 252 253 WREG32(HDMI0_AUDIO_INFO0 + offset, 254 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 255 WREG32(HDMI0_AUDIO_INFO1 + offset, 256 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24)); 257 } 258 259 /* 260 * test if audio buffer is filled enough to start playing 261 */ 262 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder) 263 { 264 struct drm_device *dev = encoder->dev; 265 struct radeon_device *rdev = dev->dev_private; 266 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 267 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 268 uint32_t offset = dig->afmt->offset; 269 270 return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0; 271 } 272 273 /* 274 * have buffer status changed since last call? 275 */ 276 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder) 277 { 278 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 279 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 280 int status, result; 281 282 if (!dig->afmt || !dig->afmt->enabled) 283 return 0; 284 285 status = r600_hdmi_is_audio_buffer_filled(encoder); 286 result = dig->afmt->last_buffer_filled_status != status; 287 dig->afmt->last_buffer_filled_status = status; 288 289 return result; 290 } 291 292 /* 293 * write the audio workaround status to the hardware 294 */ 295 void r600_hdmi_audio_workaround(struct drm_encoder *encoder) 296 { 297 struct drm_device *dev = encoder->dev; 298 struct radeon_device *rdev = dev->dev_private; 299 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 300 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 301 uint32_t offset = dig->afmt->offset; 302 bool hdmi_audio_workaround = false; /* FIXME */ 303 u32 value; 304 305 if (!hdmi_audio_workaround || 306 r600_hdmi_is_audio_buffer_filled(encoder)) 307 value = 0; /* disable workaround */ 308 else 309 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */ 310 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, 311 value, ~HDMI0_AUDIO_TEST_EN); 312 } 313 314 void r600_hdmi_audio_set_dto(struct radeon_device *rdev, 315 struct radeon_crtc *crtc, unsigned int clock) 316 { 317 struct radeon_encoder *radeon_encoder; 318 struct radeon_encoder_atom_dig *dig; 319 320 if (!crtc) 321 return; 322 323 radeon_encoder = to_radeon_encoder(crtc->encoder); 324 dig = radeon_encoder->enc_priv; 325 326 if (!dig) 327 return; 328 329 if (dig->dig_encoder == 0) { 330 WREG32(DCCG_AUDIO_DTO0_PHASE, 24000 * 100); 331 WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); 332 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ 333 } else { 334 WREG32(DCCG_AUDIO_DTO1_PHASE, 24000 * 100); 335 WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); 336 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ 337 } 338 } 339 340 void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset) 341 { 342 struct drm_device *dev = encoder->dev; 343 struct radeon_device *rdev = dev->dev_private; 344 345 WREG32_OR(HDMI0_VBI_PACKET_CONTROL + offset, 346 HDMI0_NULL_SEND | /* send null packets when required */ 347 HDMI0_GC_SEND | /* send general control packets */ 348 HDMI0_GC_CONT); /* send general control packets every frame */ 349 } 350 351 void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset) 352 { 353 struct drm_device *dev = encoder->dev; 354 struct radeon_device *rdev = dev->dev_private; 355 356 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, 357 HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */ 358 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ 359 HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */ 360 HDMI0_60958_CS_UPDATE, /* allow 60958 channel status fields to be updated */ 361 ~(HDMI0_AUDIO_SAMPLE_SEND | 362 HDMI0_AUDIO_DELAY_EN_MASK | 363 HDMI0_AUDIO_PACKETS_PER_LINE_MASK | 364 HDMI0_60958_CS_UPDATE)); 365 366 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 367 HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */ 368 HDMI0_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */ 369 370 WREG32_P(HDMI0_INFOFRAME_CONTROL1 + offset, 371 HDMI0_AUDIO_INFO_LINE(2), /* anything other than 0 */ 372 ~HDMI0_AUDIO_INFO_LINE_MASK); 373 374 WREG32_AND(HDMI0_GENERIC_PACKET_CONTROL + offset, 375 ~(HDMI0_GENERIC0_SEND | 376 HDMI0_GENERIC0_CONT | 377 HDMI0_GENERIC0_UPDATE | 378 HDMI0_GENERIC1_SEND | 379 HDMI0_GENERIC1_CONT | 380 HDMI0_GENERIC0_LINE_MASK | 381 HDMI0_GENERIC1_LINE_MASK)); 382 383 WREG32_P(HDMI0_60958_0 + offset, 384 HDMI0_60958_CS_CHANNEL_NUMBER_L(1), 385 ~(HDMI0_60958_CS_CHANNEL_NUMBER_L_MASK | 386 HDMI0_60958_CS_CLOCK_ACCURACY_MASK)); 387 388 WREG32_P(HDMI0_60958_1 + offset, 389 HDMI0_60958_CS_CHANNEL_NUMBER_R(2), 390 ~HDMI0_60958_CS_CHANNEL_NUMBER_R_MASK); 391 } 392 393 void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute) 394 { 395 struct drm_device *dev = encoder->dev; 396 struct radeon_device *rdev = dev->dev_private; 397 398 if (mute) 399 WREG32_OR(HDMI0_GC + offset, HDMI0_GC_AVMUTE); 400 else 401 WREG32_AND(HDMI0_GC + offset, ~HDMI0_GC_AVMUTE); 402 } 403 404 /** 405 * r600_hdmi_update_audio_settings - Update audio infoframe 406 * 407 * @encoder: drm encoder 408 * 409 * Gets info about current audio stream and updates audio infoframe. 410 */ 411 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder) 412 { 413 struct drm_device *dev = encoder->dev; 414 struct radeon_device *rdev = dev->dev_private; 415 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 416 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 417 struct r600_audio_pin audio = r600_audio_status(rdev); 418 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 419 struct hdmi_audio_infoframe frame; 420 uint32_t offset; 421 uint32_t value; 422 ssize_t err; 423 424 if (!dig->afmt || !dig->afmt->enabled) 425 return; 426 offset = dig->afmt->offset; 427 428 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n", 429 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped", 430 audio.channels, audio.rate, audio.bits_per_sample); 431 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", 432 (int)audio.status_bits, (int)audio.category_code); 433 434 err = hdmi_audio_infoframe_init(&frame); 435 if (err < 0) { 436 DRM_ERROR("failed to setup audio infoframe\n"); 437 return; 438 } 439 440 frame.channels = audio.channels; 441 442 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 443 if (err < 0) { 444 DRM_ERROR("failed to pack audio infoframe\n"); 445 return; 446 } 447 448 value = RREG32(HDMI0_AUDIO_PACKET_CONTROL + offset); 449 if (value & HDMI0_AUDIO_TEST_EN) 450 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, 451 value & ~HDMI0_AUDIO_TEST_EN); 452 453 WREG32_OR(HDMI0_CONTROL + offset, 454 HDMI0_ERROR_ACK); 455 456 WREG32_AND(HDMI0_INFOFRAME_CONTROL0 + offset, 457 ~HDMI0_AUDIO_INFO_SOURCE); 458 459 r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer)); 460 461 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 462 HDMI0_AUDIO_INFO_CONT | 463 HDMI0_AUDIO_INFO_UPDATE); 464 } 465 466 /* 467 * enable the HDMI engine 468 */ 469 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable) 470 { 471 struct drm_device *dev = encoder->dev; 472 struct radeon_device *rdev = dev->dev_private; 473 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 474 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 475 u32 hdmi = HDMI0_ERROR_ACK; 476 477 if (!dig || !dig->afmt) 478 return; 479 480 /* Older chipsets require setting HDMI and routing manually */ 481 if (!ASIC_IS_DCE3(rdev)) { 482 if (enable) 483 hdmi |= HDMI0_ENABLE; 484 switch (radeon_encoder->encoder_id) { 485 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: 486 if (enable) { 487 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN); 488 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA); 489 } else { 490 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN); 491 } 492 break; 493 case ENCODER_OBJECT_ID_INTERNAL_LVTM1: 494 if (enable) { 495 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN); 496 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA); 497 } else { 498 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN); 499 } 500 break; 501 case ENCODER_OBJECT_ID_INTERNAL_DDI: 502 if (enable) { 503 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN); 504 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA); 505 } else { 506 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN); 507 } 508 break; 509 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1: 510 if (enable) 511 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA); 512 break; 513 default: 514 dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n", 515 radeon_encoder->encoder_id); 516 break; 517 } 518 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi); 519 } 520 521 if (rdev->irq.installed) { 522 /* if irq is available use it */ 523 /* XXX: shouldn't need this on any asics. Double check DCE2/3 */ 524 if (enable) 525 radeon_irq_kms_enable_afmt(rdev, dig->afmt->id); 526 else 527 radeon_irq_kms_disable_afmt(rdev, dig->afmt->id); 528 } 529 530 dig->afmt->enabled = enable; 531 532 DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n", 533 enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id); 534 } 535 536