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 "r600.h" 34 #include "r600d.h" 35 #include "atom.h" 36 37 /* 38 * HDMI color format 39 */ 40 enum r600_hdmi_color_format { 41 RGB = 0, 42 YCC_422 = 1, 43 YCC_444 = 2 44 }; 45 46 /* 47 * IEC60958 status bits 48 */ 49 enum r600_hdmi_iec_status_bits { 50 AUDIO_STATUS_DIG_ENABLE = 0x01, 51 AUDIO_STATUS_V = 0x02, 52 AUDIO_STATUS_VCFG = 0x04, 53 AUDIO_STATUS_EMPHASIS = 0x08, 54 AUDIO_STATUS_COPYRIGHT = 0x10, 55 AUDIO_STATUS_NONAUDIO = 0x20, 56 AUDIO_STATUS_PROFESSIONAL = 0x40, 57 AUDIO_STATUS_LEVEL = 0x80 58 }; 59 60 static struct r600_audio_pin r600_audio_status(struct radeon_device *rdev) 61 { 62 struct r600_audio_pin status = {}; 63 uint32_t value; 64 65 value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); 66 67 /* number of channels */ 68 status.channels = (value & 0x7) + 1; 69 70 /* bits per sample */ 71 switch ((value & 0xF0) >> 4) { 72 case 0x0: 73 status.bits_per_sample = 8; 74 break; 75 case 0x1: 76 status.bits_per_sample = 16; 77 break; 78 case 0x2: 79 status.bits_per_sample = 20; 80 break; 81 case 0x3: 82 status.bits_per_sample = 24; 83 break; 84 case 0x4: 85 status.bits_per_sample = 32; 86 break; 87 default: 88 dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n", 89 (int)value); 90 status.bits_per_sample = 16; 91 } 92 93 /* current sampling rate in HZ */ 94 if (value & 0x4000) 95 status.rate = 44100; 96 else 97 status.rate = 48000; 98 status.rate *= ((value >> 11) & 0x7) + 1; 99 status.rate /= ((value >> 8) & 0x7) + 1; 100 101 value = RREG32(R600_AUDIO_STATUS_BITS); 102 103 /* iec 60958 status bits */ 104 status.status_bits = value & 0xff; 105 106 /* iec 60958 category code */ 107 status.category_code = (value >> 8) & 0xff; 108 109 return status; 110 } 111 112 /* 113 * update all hdmi interfaces with current audio parameters 114 */ 115 void r600_audio_update_hdmi(struct work_struct *work) 116 { 117 struct radeon_device *rdev = container_of(work, struct radeon_device, 118 audio_work); 119 struct drm_device *dev = rdev->ddev; 120 struct r600_audio_pin audio_status = r600_audio_status(rdev); 121 struct drm_encoder *encoder; 122 bool changed = false; 123 124 if (rdev->audio.pin[0].channels != audio_status.channels || 125 rdev->audio.pin[0].rate != audio_status.rate || 126 rdev->audio.pin[0].bits_per_sample != audio_status.bits_per_sample || 127 rdev->audio.pin[0].status_bits != audio_status.status_bits || 128 rdev->audio.pin[0].category_code != audio_status.category_code) { 129 rdev->audio.pin[0] = audio_status; 130 changed = true; 131 } 132 133 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 134 if (!radeon_encoder_is_digital(encoder)) 135 continue; 136 if (changed || r600_hdmi_buffer_status_changed(encoder)) 137 r600_hdmi_update_audio_settings(encoder); 138 } 139 } 140 141 /* enable the audio stream */ 142 void r600_audio_enable(struct radeon_device *rdev, 143 struct r600_audio_pin *pin, 144 u8 enable_mask) 145 { 146 u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL); 147 148 if (!pin) 149 return; 150 151 if (enable_mask) { 152 tmp |= AUDIO_ENABLED; 153 if (enable_mask & 1) 154 tmp |= PIN0_AUDIO_ENABLED; 155 if (enable_mask & 2) 156 tmp |= PIN1_AUDIO_ENABLED; 157 if (enable_mask & 4) 158 tmp |= PIN2_AUDIO_ENABLED; 159 if (enable_mask & 8) 160 tmp |= PIN3_AUDIO_ENABLED; 161 } else { 162 tmp &= ~(AUDIO_ENABLED | 163 PIN0_AUDIO_ENABLED | 164 PIN1_AUDIO_ENABLED | 165 PIN2_AUDIO_ENABLED | 166 PIN3_AUDIO_ENABLED); 167 } 168 169 WREG32(AZ_HOT_PLUG_CONTROL, tmp); 170 } 171 172 struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev) 173 { 174 /* only one pin on 6xx-NI */ 175 return &rdev->audio.pin[0]; 176 } 177 178 void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset, 179 const struct radeon_hdmi_acr *acr) 180 { 181 struct drm_device *dev = encoder->dev; 182 struct radeon_device *rdev = dev->dev_private; 183 184 /* DCE 3.0 uses register that's normally for CRC_CONTROL */ 185 uint32_t acr_ctl = ASIC_IS_DCE3(rdev) ? DCE3_HDMI0_ACR_PACKET_CONTROL : 186 HDMI0_ACR_PACKET_CONTROL; 187 WREG32_P(acr_ctl + offset, 188 HDMI0_ACR_SOURCE | /* select SW CTS value */ 189 HDMI0_ACR_AUTO_SEND, /* allow hw to sent ACR packets when required */ 190 ~(HDMI0_ACR_SOURCE | 191 HDMI0_ACR_AUTO_SEND)); 192 193 WREG32_P(HDMI0_ACR_32_0 + offset, 194 HDMI0_ACR_CTS_32(acr->cts_32khz), 195 ~HDMI0_ACR_CTS_32_MASK); 196 WREG32_P(HDMI0_ACR_32_1 + offset, 197 HDMI0_ACR_N_32(acr->n_32khz), 198 ~HDMI0_ACR_N_32_MASK); 199 200 WREG32_P(HDMI0_ACR_44_0 + offset, 201 HDMI0_ACR_CTS_44(acr->cts_44_1khz), 202 ~HDMI0_ACR_CTS_44_MASK); 203 WREG32_P(HDMI0_ACR_44_1 + offset, 204 HDMI0_ACR_N_44(acr->n_44_1khz), 205 ~HDMI0_ACR_N_44_MASK); 206 207 WREG32_P(HDMI0_ACR_48_0 + offset, 208 HDMI0_ACR_CTS_48(acr->cts_48khz), 209 ~HDMI0_ACR_CTS_48_MASK); 210 WREG32_P(HDMI0_ACR_48_1 + offset, 211 HDMI0_ACR_N_48(acr->n_48khz), 212 ~HDMI0_ACR_N_48_MASK); 213 } 214 215 /* 216 * build a HDMI Video Info Frame 217 */ 218 void r600_set_avi_packet(struct radeon_device *rdev, u32 offset, 219 unsigned char *buffer, size_t size) 220 { 221 uint8_t *frame = buffer + 3; 222 223 WREG32(HDMI0_AVI_INFO0 + offset, 224 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 225 WREG32(HDMI0_AVI_INFO1 + offset, 226 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); 227 WREG32(HDMI0_AVI_INFO2 + offset, 228 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); 229 WREG32(HDMI0_AVI_INFO3 + offset, 230 frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24)); 231 232 WREG32_OR(HDMI0_INFOFRAME_CONTROL1 + offset, 233 HDMI0_AVI_INFO_LINE(2)); /* anything other than 0 */ 234 235 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 236 HDMI0_AVI_INFO_SEND | /* enable AVI info frames */ 237 HDMI0_AVI_INFO_CONT); /* send AVI info frames every frame/field */ 238 239 } 240 241 /* 242 * build a Audio Info Frame 243 */ 244 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder, 245 const void *buffer, size_t size) 246 { 247 struct drm_device *dev = encoder->dev; 248 struct radeon_device *rdev = dev->dev_private; 249 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 250 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 251 uint32_t offset = dig->afmt->offset; 252 const u8 *frame = buffer + 3; 253 254 WREG32(HDMI0_AUDIO_INFO0 + offset, 255 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); 256 WREG32(HDMI0_AUDIO_INFO1 + offset, 257 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24)); 258 } 259 260 /* 261 * test if audio buffer is filled enough to start playing 262 */ 263 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder) 264 { 265 struct drm_device *dev = encoder->dev; 266 struct radeon_device *rdev = dev->dev_private; 267 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 268 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 269 uint32_t offset = dig->afmt->offset; 270 271 return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0; 272 } 273 274 /* 275 * have buffer status changed since last call? 276 */ 277 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder) 278 { 279 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 280 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 281 int status, result; 282 283 if (!dig->afmt || !dig->afmt->enabled) 284 return 0; 285 286 status = r600_hdmi_is_audio_buffer_filled(encoder); 287 result = dig->afmt->last_buffer_filled_status != status; 288 dig->afmt->last_buffer_filled_status = status; 289 290 return result; 291 } 292 293 /* 294 * write the audio workaround status to the hardware 295 */ 296 void r600_hdmi_audio_workaround(struct drm_encoder *encoder) 297 { 298 struct drm_device *dev = encoder->dev; 299 struct radeon_device *rdev = dev->dev_private; 300 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 301 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 302 uint32_t offset = dig->afmt->offset; 303 bool hdmi_audio_workaround = false; /* FIXME */ 304 u32 value; 305 306 if (!hdmi_audio_workaround || 307 r600_hdmi_is_audio_buffer_filled(encoder)) 308 value = 0; /* disable workaround */ 309 else 310 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */ 311 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, 312 value, ~HDMI0_AUDIO_TEST_EN); 313 } 314 315 void r600_hdmi_audio_set_dto(struct radeon_device *rdev, 316 struct radeon_crtc *crtc, unsigned int clock) 317 { 318 struct radeon_encoder *radeon_encoder; 319 struct radeon_encoder_atom_dig *dig; 320 321 if (!crtc) 322 return; 323 324 radeon_encoder = to_radeon_encoder(crtc->encoder); 325 dig = radeon_encoder->enc_priv; 326 327 if (!dig) 328 return; 329 330 if (dig->dig_encoder == 0) { 331 WREG32(DCCG_AUDIO_DTO0_PHASE, 24000 * 100); 332 WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); 333 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ 334 } else { 335 WREG32(DCCG_AUDIO_DTO1_PHASE, 24000 * 100); 336 WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); 337 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ 338 } 339 } 340 341 void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset) 342 { 343 struct drm_device *dev = encoder->dev; 344 struct radeon_device *rdev = dev->dev_private; 345 346 WREG32_OR(HDMI0_VBI_PACKET_CONTROL + offset, 347 HDMI0_NULL_SEND | /* send null packets when required */ 348 HDMI0_GC_SEND | /* send general control packets */ 349 HDMI0_GC_CONT); /* send general control packets every frame */ 350 } 351 352 void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset) 353 { 354 struct drm_device *dev = encoder->dev; 355 struct radeon_device *rdev = dev->dev_private; 356 357 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, 358 HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */ 359 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ 360 HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */ 361 HDMI0_60958_CS_UPDATE, /* allow 60958 channel status fields to be updated */ 362 ~(HDMI0_AUDIO_SAMPLE_SEND | 363 HDMI0_AUDIO_DELAY_EN_MASK | 364 HDMI0_AUDIO_PACKETS_PER_LINE_MASK | 365 HDMI0_60958_CS_UPDATE)); 366 367 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 368 HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */ 369 HDMI0_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */ 370 371 WREG32_P(HDMI0_INFOFRAME_CONTROL1 + offset, 372 HDMI0_AUDIO_INFO_LINE(2), /* anything other than 0 */ 373 ~HDMI0_AUDIO_INFO_LINE_MASK); 374 375 WREG32_AND(HDMI0_GENERIC_PACKET_CONTROL + offset, 376 ~(HDMI0_GENERIC0_SEND | 377 HDMI0_GENERIC0_CONT | 378 HDMI0_GENERIC0_UPDATE | 379 HDMI0_GENERIC1_SEND | 380 HDMI0_GENERIC1_CONT | 381 HDMI0_GENERIC0_LINE_MASK | 382 HDMI0_GENERIC1_LINE_MASK)); 383 384 WREG32_P(HDMI0_60958_0 + offset, 385 HDMI0_60958_CS_CHANNEL_NUMBER_L(1), 386 ~(HDMI0_60958_CS_CHANNEL_NUMBER_L_MASK | 387 HDMI0_60958_CS_CLOCK_ACCURACY_MASK)); 388 389 WREG32_P(HDMI0_60958_1 + offset, 390 HDMI0_60958_CS_CHANNEL_NUMBER_R(2), 391 ~HDMI0_60958_CS_CHANNEL_NUMBER_R_MASK); 392 } 393 394 void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute) 395 { 396 struct drm_device *dev = encoder->dev; 397 struct radeon_device *rdev = dev->dev_private; 398 399 if (mute) 400 WREG32_OR(HDMI0_GC + offset, HDMI0_GC_AVMUTE); 401 else 402 WREG32_AND(HDMI0_GC + offset, ~HDMI0_GC_AVMUTE); 403 } 404 405 /** 406 * r600_hdmi_update_audio_settings - Update audio infoframe 407 * 408 * @encoder: drm encoder 409 * 410 * Gets info about current audio stream and updates audio infoframe. 411 */ 412 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder) 413 { 414 struct drm_device *dev = encoder->dev; 415 struct radeon_device *rdev = dev->dev_private; 416 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 417 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 418 struct r600_audio_pin audio = r600_audio_status(rdev); 419 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 420 struct hdmi_audio_infoframe frame; 421 uint32_t offset; 422 uint32_t value; 423 ssize_t err; 424 425 if (!dig->afmt || !dig->afmt->enabled) 426 return; 427 offset = dig->afmt->offset; 428 429 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n", 430 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped", 431 audio.channels, audio.rate, audio.bits_per_sample); 432 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", 433 (int)audio.status_bits, (int)audio.category_code); 434 435 err = hdmi_audio_infoframe_init(&frame); 436 if (err < 0) { 437 DRM_ERROR("failed to setup audio infoframe\n"); 438 return; 439 } 440 441 frame.channels = audio.channels; 442 443 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 444 if (err < 0) { 445 DRM_ERROR("failed to pack audio infoframe\n"); 446 return; 447 } 448 449 value = RREG32(HDMI0_AUDIO_PACKET_CONTROL + offset); 450 if (value & HDMI0_AUDIO_TEST_EN) 451 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, 452 value & ~HDMI0_AUDIO_TEST_EN); 453 454 WREG32_OR(HDMI0_CONTROL + offset, 455 HDMI0_ERROR_ACK); 456 457 WREG32_AND(HDMI0_INFOFRAME_CONTROL0 + offset, 458 ~HDMI0_AUDIO_INFO_SOURCE); 459 460 r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer)); 461 462 WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset, 463 HDMI0_AUDIO_INFO_CONT | 464 HDMI0_AUDIO_INFO_UPDATE); 465 } 466 467 /* 468 * enable the HDMI engine 469 */ 470 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable) 471 { 472 struct drm_device *dev = encoder->dev; 473 struct radeon_device *rdev = dev->dev_private; 474 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 475 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; 476 u32 hdmi = HDMI0_ERROR_ACK; 477 478 if (!dig || !dig->afmt) 479 return; 480 481 /* Older chipsets require setting HDMI and routing manually */ 482 if (!ASIC_IS_DCE3(rdev)) { 483 if (enable) 484 hdmi |= HDMI0_ENABLE; 485 switch (radeon_encoder->encoder_id) { 486 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: 487 if (enable) { 488 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN); 489 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA); 490 } else { 491 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN); 492 } 493 break; 494 case ENCODER_OBJECT_ID_INTERNAL_LVTM1: 495 if (enable) { 496 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN); 497 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA); 498 } else { 499 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN); 500 } 501 break; 502 case ENCODER_OBJECT_ID_INTERNAL_DDI: 503 if (enable) { 504 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN); 505 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA); 506 } else { 507 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN); 508 } 509 break; 510 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1: 511 if (enable) 512 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA); 513 break; 514 default: 515 dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n", 516 radeon_encoder->encoder_id); 517 break; 518 } 519 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi); 520 } 521 522 if (rdev->irq.installed) { 523 /* if irq is available use it */ 524 /* XXX: shouldn't need this on any asics. Double check DCE2/3 */ 525 if (enable) 526 radeon_irq_kms_enable_afmt(rdev, dig->afmt->id); 527 else 528 radeon_irq_kms_disable_afmt(rdev, dig->afmt->id); 529 } 530 531 dig->afmt->enabled = enable; 532 533 DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n", 534 enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id); 535 } 536 537