drivers/gpu/drm/radeon/r600_hdmi.c

   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