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 <drm/drmP.h>
  28 #include <drm/radeon_drm.h>
  29 #include "radeon.h"
  30 #include "radeon_asic.h"
  31 #include "r600d.h"
  32 #include "atom.h"
  33
  34 /*
  35  * HDMI color format
  36  */
  37 enum r600_hdmi_color_format {
  38         RGB = 0,
  39         YCC_422 = 1,
  40         YCC_444 = 2
  41 };
  42
  43 /*
  44  * IEC60958 status bits
  45  */
  46 enum r600_hdmi_iec_status_bits {
  47         AUDIO_STATUS_DIG_ENABLE   = 0x01,
  48         AUDIO_STATUS_V            = 0x02,
  49         AUDIO_STATUS_VCFG         = 0x04,
  50         AUDIO_STATUS_EMPHASIS     = 0x08,
  51         AUDIO_STATUS_COPYRIGHT    = 0x10,
  52         AUDIO_STATUS_NONAUDIO     = 0x20,
  53         AUDIO_STATUS_PROFESSIONAL = 0x40,
  54         AUDIO_STATUS_LEVEL        = 0x80
  55 };
  56
  57 static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {
  58     /*       32kHz        44.1kHz       48kHz    */
  59     /* Clock      N     CTS      N     CTS      N     CTS */
  60     {  25175,  4576,  28125,  7007,  31250,  6864,  28125 }, /*  25,20/1.001 MHz */
  61     {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */
  62     {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */
  63     {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */
  64     {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */
  65     {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */
  66     {  74176, 11648, 210937, 17836, 234375, 11648, 140625 }, /*  74.25/1.001 MHz */
  67     {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */
  68     { 148352, 11648, 421875,  8918, 234375,  5824, 140625 }, /* 148.50/1.001 MHz */
  69     { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */
  70     {      0,  4096,      0,  6272,      0,  6144,      0 }  /* Other */
  71 };
  72
  73 /*
  74  * calculate CTS value if it's not found in the table
  75  */
  76 static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int N, int freq)
  77 {
  78         u64 n;
  79         u32 d;
  80
  81         if (*CTS == 0) {
  82                 n = (u64)clock * (u64)N * 1000ULL;
  83                 d = 128 * freq;
  84                 do_div(n, d);
  85                 *CTS = n;
  86         }
  87         DRM_DEBUG("Using ACR timing N=%d CTS=%d for frequency %d\n",
  88                   N, *CTS, freq);
  89 }
  90
  91 struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock)
  92 {
  93         struct radeon_hdmi_acr res;
  94         u8 i;
  95
  96         for (i = 0; r600_hdmi_predefined_acr[i].clock != clock &&
  97              r600_hdmi_predefined_acr[i].clock != 0; i++)
  98                 ;
  99         res = r600_hdmi_predefined_acr[i];
 100
 101         /* In case some CTS are missing */
 102         r600_hdmi_calc_cts(clock, &res.cts_32khz, res.n_32khz, 32000);
 103         r600_hdmi_calc_cts(clock, &res.cts_44_1khz, res.n_44_1khz, 44100);
 104         r600_hdmi_calc_cts(clock, &res.cts_48khz, res.n_48khz, 48000);
 105
 106         return res;
 107 }
 108
 109 /*
 110  * update the N and CTS parameters for a given pixel clock rate
 111  */
 112 static void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
 113 {
 114         struct drm_device *dev = encoder->dev;
 115         struct radeon_device *rdev = dev->dev_private;
 116         struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
 117         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 118         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 119         uint32_t offset = dig->afmt->offset;
 120
 121         WREG32(HDMI0_ACR_32_0 + offset, HDMI0_ACR_CTS_32(acr.cts_32khz));
 122         WREG32(HDMI0_ACR_32_1 + offset, acr.n_32khz);
 123
 124         WREG32(HDMI0_ACR_44_0 + offset, HDMI0_ACR_CTS_44(acr.cts_44_1khz));
 125         WREG32(HDMI0_ACR_44_1 + offset, acr.n_44_1khz);
 126
 127         WREG32(HDMI0_ACR_48_0 + offset, HDMI0_ACR_CTS_48(acr.cts_48khz));
 128         WREG32(HDMI0_ACR_48_1 + offset, acr.n_48khz);
 129 }
 130
 131 /*
 132  * build a HDMI Video Info Frame
 133  */
 134 static void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder,
 135                                            void *buffer, size_t size)
 136 {
 137         struct drm_device *dev = encoder->dev;
 138         struct radeon_device *rdev = dev->dev_private;
 139         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 140         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 141         uint32_t offset = dig->afmt->offset;
 142         uint8_t *frame = buffer + 3;
 143         uint8_t *header = buffer;
 144
 145         WREG32(HDMI0_AVI_INFO0 + offset,
 146                 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
 147         WREG32(HDMI0_AVI_INFO1 + offset,
 148                 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
 149         WREG32(HDMI0_AVI_INFO2 + offset,
 150                 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
 151         WREG32(HDMI0_AVI_INFO3 + offset,
 152                 frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));
 153 }
 154
 155 /*
 156  * build a Audio Info Frame
 157  */
 158 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder,
 159                                              const 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         const u8 *frame = buffer + 3;
 167
 168         WREG32(HDMI0_AUDIO_INFO0 + offset,
 169                 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
 170         WREG32(HDMI0_AUDIO_INFO1 + offset,
 171                 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24));
 172 }
 173
 174 /*
 175  * test if audio buffer is filled enough to start playing
 176  */
 177 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder)
 178 {
 179         struct drm_device *dev = encoder->dev;
 180         struct radeon_device *rdev = dev->dev_private;
 181         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 182         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 183         uint32_t offset = dig->afmt->offset;
 184
 185         return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0;
 186 }
 187
 188 /*
 189  * have buffer status changed since last call?
 190  */
 191 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder)
 192 {
 193         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 194         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 195         int status, result;
 196
 197         if (!dig->afmt || !dig->afmt->enabled)
 198                 return 0;
 199
 200         status = r600_hdmi_is_audio_buffer_filled(encoder);
 201         result = dig->afmt->last_buffer_filled_status != status;
 202         dig->afmt->last_buffer_filled_status = status;
 203
 204         return result;
 205 }
 206
 207 /*
 208  * write the audio workaround status to the hardware
 209  */
 210 static void r600_hdmi_audio_workaround(struct drm_encoder *encoder)
 211 {
 212         struct drm_device *dev = encoder->dev;
 213         struct radeon_device *rdev = dev->dev_private;
 214         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 215         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 216         uint32_t offset = dig->afmt->offset;
 217         bool hdmi_audio_workaround = false; /* FIXME */
 218         u32 value;
 219
 220         if (!hdmi_audio_workaround ||
 221             r600_hdmi_is_audio_buffer_filled(encoder))
 222                 value = 0; /* disable workaround */
 223         else
 224                 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */
 225         WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,
 226                  value, ~HDMI0_AUDIO_TEST_EN);
 227 }
 228
 229 void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)
 230 {
 231         struct drm_device *dev = encoder->dev;
 232         struct radeon_device *rdev = dev->dev_private;
 233         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 234         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 235         u32 base_rate = 24000;
 236         u32 max_ratio = clock / base_rate;
 237         u32 dto_phase;
 238         u32 dto_modulo = clock;
 239         u32 wallclock_ratio;
 240         u32 dto_cntl;
 241
 242         if (!dig || !dig->afmt)
 243                 return;
 244
 245         if (max_ratio >= 8) {
 246                 dto_phase = 192 * 1000;
 247                 wallclock_ratio = 3;
 248         } else if (max_ratio >= 4) {
 249                 dto_phase = 96 * 1000;
 250                 wallclock_ratio = 2;
 251         } else if (max_ratio >= 2) {
 252                 dto_phase = 48 * 1000;
 253                 wallclock_ratio = 1;
 254         } else {
 255                 dto_phase = 24 * 1000;
 256                 wallclock_ratio = 0;
 257         }
 258
 259         /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT.
 260          * doesn't matter which one you use.  Just use the first one.
 261          */
 262         /* XXX two dtos; generally use dto0 for hdmi */
 263         /* Express [24MHz / target pixel clock] as an exact rational
 264          * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 265          * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 266          */
 267         if (ASIC_IS_DCE32(rdev)) {
 268                 if (dig->dig_encoder == 0) {
 269                         dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 270                         dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 271                         WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
 272                         WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
 273                         WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);
 274                         WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
 275                 } else {
 276                         dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 277                         dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 278                         WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);
 279                         WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);
 280                         WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);
 281                         WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
 282                 }
 283         } else if (ASIC_IS_DCE3(rdev)) {
 284                 /* according to the reg specs, this should DCE3.2 only, but in
 285                  * practice it seems to cover DCE3.0/3.1 as well.
 286                  */
 287                 if (dig->dig_encoder == 0) {
 288                         WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100);
 289                         WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100);
 290                         WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
 291                 } else {
 292                         WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100);
 293                         WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100);
 294                         WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
 295                 }
 296         } else {
 297                 /* according to the reg specs, this should be DCE2.0 and DCE3.0/3.1 */
 298                 WREG32(AUDIO_DTO, AUDIO_DTO_PHASE(base_rate / 10) |
 299                        AUDIO_DTO_MODULE(clock / 10));
 300         }
 301 }
 302
 303 static void dce3_2_afmt_write_speaker_allocation(struct drm_encoder *encoder)
 304 {
 305         struct radeon_device *rdev = encoder->dev->dev_private;
 306         struct drm_connector *connector;
 307         struct radeon_connector *radeon_connector = NULL;
 308         u32 tmp;
 309         u8 *sadb;
 310         int sad_count;
 311
 312         /* XXX: setting this register causes hangs on some asics */
 313         return;
 314
 315         list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 316                 if (connector->encoder == encoder)
 317                         radeon_connector = to_radeon_connector(connector);
 318         }
 319
 320         if (!radeon_connector) {
 321                 DRM_ERROR("Couldn't find encoder's connector\n");
 322                 return;
 323         }
 324
 325         sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb);
 326         if (sad_count < 0) {
 327                 DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
 328                 return;
 329         }
 330
 331         /* program the speaker allocation */
 332         tmp = RREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 333         tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 334         /* set HDMI mode */
 335         tmp |= HDMI_CONNECTION;
 336         if (sad_count)
 337                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
 338         else
 339                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 340         WREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 341
 342         kfree(sadb);
 343 }
 344
 345 static void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder)
 346 {
 347         struct radeon_device *rdev = encoder->dev->dev_private;
 348         struct drm_connector *connector;
 349         struct radeon_connector *radeon_connector = NULL;
 350         struct cea_sad *sads;
 351         int i, sad_count;
 352
 353         static const u16 eld_reg_to_type[][2] = {
 354                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 355                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 356                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 357                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 358                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 359                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 360                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 361                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 362                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 363                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 364                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 365                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 366         };
 367
 368         list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 369                 if (connector->encoder == encoder)
 370                         radeon_connector = to_radeon_connector(connector);
 371         }
 372
 373         if (!radeon_connector) {
 374                 DRM_ERROR("Couldn't find encoder's connector\n");
 375                 return;
 376         }
 377
 378         sad_count = drm_edid_to_sad(radeon_connector->edid, &sads);
 379         if (sad_count < 0) {
 380                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 381                 return;
 382         }
 383         BUG_ON(!sads);
 384
 385         for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 386                 u32 value = 0;
 387                 int j;
 388
 389                 for (j = 0; j < sad_count; j++) {
 390                         struct cea_sad *sad = &sads[j];
 391
 392                         if (sad->format == eld_reg_to_type[i][1]) {
 393                                 value = MAX_CHANNELS(sad->channels) |
 394                                         DESCRIPTOR_BYTE_2(sad->byte2) |
 395                                         SUPPORTED_FREQUENCIES(sad->freq);
 396                                 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 397                                         value |= SUPPORTED_FREQUENCIES_STEREO(sad->freq);
 398                                 break;
 399                         }
 400                 }
 401                 WREG32(eld_reg_to_type[i][0], value);
 402         }
 403
 404         kfree(sads);
 405 }
 406
 407 /*
 408  * update the info frames with the data from the current display mode
 409  */
 410 void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
 411 {
 412         struct drm_device *dev = encoder->dev;
 413         struct radeon_device *rdev = dev->dev_private;
 414         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 415         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 416         u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
 417         struct hdmi_avi_infoframe frame;
 418         uint32_t offset;
 419         ssize_t err;
 420
 421         if (!dig || !dig->afmt)
 422                 return;
 423
 424         /* Silent, r600_hdmi_enable will raise WARN for us */
 425         if (!dig->afmt->enabled)
 426                 return;
 427         offset = dig->afmt->offset;
 428
 429         r600_audio_set_dto(encoder, mode->clock);
 430
 431         WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
 432                HDMI0_NULL_SEND); /* send null packets when required */
 433
 434         WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);
 435
 436         if (ASIC_IS_DCE32(rdev)) {
 437                 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
 438                        HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
 439                        HDMI0_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 440                 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
 441                        AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */
 442                        AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 443         } else {
 444                 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
 445                        HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */
 446                        HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
 447                        HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */
 448                        HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 449         }
 450
 451         if (ASIC_IS_DCE32(rdev)) {
 452                 dce3_2_afmt_write_speaker_allocation(encoder);
 453                 dce3_2_afmt_write_sad_regs(encoder);
 454         }
 455
 456         WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
 457                HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
 458                HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
 459
 460         WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
 461                HDMI0_NULL_SEND | /* send null packets when required */
 462                HDMI0_GC_SEND | /* send general control packets */
 463                HDMI0_GC_CONT); /* send general control packets every frame */
 464
 465         /* TODO: HDMI0_AUDIO_INFO_UPDATE */
 466         WREG32(HDMI0_INFOFRAME_CONTROL0 + offset,
 467                HDMI0_AVI_INFO_SEND | /* enable AVI info frames */
 468                HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */
 469                HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 470                HDMI0_AUDIO_INFO_CONT); /* send audio info frames every frame/field */
 471
 472         WREG32(HDMI0_INFOFRAME_CONTROL1 + offset,
 473                HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */
 474                HDMI0_AUDIO_INFO_LINE(2)); /* anything other than 0 */
 475
 476         WREG32(HDMI0_GC + offset, 0); /* unset HDMI0_GC_AVMUTE */
 477
 478         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
 479         if (err < 0) {
 480                 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
 481                 return;
 482         }
 483
 484         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
 485         if (err < 0) {
 486                 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
 487                 return;
 488         }
 489
 490         r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
 491         r600_hdmi_update_ACR(encoder, mode->clock);
 492
 493         /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
 494         WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);
 495         WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF);
 496         WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001);
 497         WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001);
 498
 499         r600_hdmi_audio_workaround(encoder);
 500 }
 501
 502 /*
 503  * update settings with current parameters from audio engine
 504  */
 505 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder)
 506 {
 507         struct drm_device *dev = encoder->dev;
 508         struct radeon_device *rdev = dev->dev_private;
 509         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 510         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 511         struct r600_audio_pin audio = r600_audio_status(rdev);
 512         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
 513         struct hdmi_audio_infoframe frame;
 514         uint32_t offset;
 515         uint32_t iec;
 516         ssize_t err;
 517
 518         if (!dig->afmt || !dig->afmt->enabled)
 519                 return;
 520         offset = dig->afmt->offset;
 521
 522         DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",
 523                  r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped",
 524                   audio.channels, audio.rate, audio.bits_per_sample);
 525         DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",
 526                   (int)audio.status_bits, (int)audio.category_code);
 527
 528         iec = 0;
 529         if (audio.status_bits & AUDIO_STATUS_PROFESSIONAL)
 530                 iec |= 1 << 0;
 531         if (audio.status_bits & AUDIO_STATUS_NONAUDIO)
 532                 iec |= 1 << 1;
 533         if (audio.status_bits & AUDIO_STATUS_COPYRIGHT)
 534                 iec |= 1 << 2;
 535         if (audio.status_bits & AUDIO_STATUS_EMPHASIS)
 536                 iec |= 1 << 3;
 537
 538         iec |= HDMI0_60958_CS_CATEGORY_CODE(audio.category_code);
 539
 540         switch (audio.rate) {
 541         case 32000:
 542                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x3);
 543                 break;
 544         case 44100:
 545                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x0);
 546                 break;
 547         case 48000:
 548                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x2);
 549                 break;
 550         case 88200:
 551                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x8);
 552                 break;
 553         case 96000:
 554                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xa);
 555                 break;
 556         case 176400:
 557                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xc);
 558                 break;
 559         case 192000:
 560                 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xe);
 561                 break;
 562         }
 563
 564         WREG32(HDMI0_60958_0 + offset, iec);
 565
 566         iec = 0;
 567         switch (audio.bits_per_sample) {
 568         case 16:
 569                 iec |= HDMI0_60958_CS_WORD_LENGTH(0x2);
 570                 break;
 571         case 20:
 572                 iec |= HDMI0_60958_CS_WORD_LENGTH(0x3);
 573                 break;
 574         case 24:
 575                 iec |= HDMI0_60958_CS_WORD_LENGTH(0xb);
 576                 break;
 577         }
 578         if (audio.status_bits & AUDIO_STATUS_V)
 579                 iec |= 0x5 << 16;
 580         WREG32_P(HDMI0_60958_1 + offset, iec, ~0x5000f);
 581
 582         err = hdmi_audio_infoframe_init(&frame);
 583         if (err < 0) {
 584                 DRM_ERROR("failed to setup audio infoframe\n");
 585                 return;
 586         }
 587
 588         frame.channels = audio.channels;
 589
 590         err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
 591         if (err < 0) {
 592                 DRM_ERROR("failed to pack audio infoframe\n");
 593                 return;
 594         }
 595
 596         r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer));
 597         r600_hdmi_audio_workaround(encoder);
 598 }
 599
 600 /*
 601  * enable the HDMI engine
 602  */
 603 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable)
 604 {
 605         struct drm_device *dev = encoder->dev;
 606         struct radeon_device *rdev = dev->dev_private;
 607         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 608         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 609         u32 hdmi = HDMI0_ERROR_ACK;
 610
 611         if (!dig || !dig->afmt)
 612                 return;
 613
 614         /* Silent, r600_hdmi_enable will raise WARN for us */
 615         if (enable && dig->afmt->enabled)
 616                 return;
 617         if (!enable && !dig->afmt->enabled)
 618                 return;
 619
 620         if (enable)
 621                 dig->afmt->pin = r600_audio_get_pin(rdev);
 622         else
 623                 dig->afmt->pin = NULL;
 624
 625         /* Older chipsets require setting HDMI and routing manually */
 626         if (!ASIC_IS_DCE3(rdev)) {
 627                 if (enable)
 628                         hdmi |= HDMI0_ENABLE;
 629                 switch (radeon_encoder->encoder_id) {
 630                 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
 631                         if (enable) {
 632                                 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN);
 633                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA);
 634                         } else {
 635                                 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN);
 636                         }
 637                         break;
 638                 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
 639                         if (enable) {
 640                                 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN);
 641                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA);
 642                         } else {
 643                                 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN);
 644                         }
 645                         break;
 646                 case ENCODER_OBJECT_ID_INTERNAL_DDI:
 647                         if (enable) {
 648                                 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN);
 649                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA);
 650                         } else {
 651                                 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN);
 652                         }
 653                         break;
 654                 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
 655                         if (enable)
 656                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA);
 657                         break;
 658                 default:
 659                         dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n",
 660                                 radeon_encoder->encoder_id);
 661                         break;
 662                 }
 663                 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi);
 664         }
 665
 666         if (rdev->irq.installed) {
 667                 /* if irq is available use it */
 668                 /* XXX: shouldn't need this on any asics.  Double check DCE2/3 */
 669                 if (enable)
 670                         radeon_irq_kms_enable_afmt(rdev, dig->afmt->id);
 671                 else
 672                         radeon_irq_kms_disable_afmt(rdev, dig->afmt->id);
 673         }
 674
 675         dig->afmt->enabled = enable;
 676
 677         DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
 678                   enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
 679 }
 680