linux/drivers/gpu/drm/radeon/evergreen_hdmi.c
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   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 *          Rafał Miłecki
  26 */
  27#include <linux/hdmi.h>
  28#include <drm/drmP.h>
  29#include <drm/radeon_drm.h>
  30#include "radeon.h"
  31#include "radeon_asic.h"
  32#include "radeon_audio.h"
  33#include "evergreend.h"
  34#include "atom.h"
  35
  36/* enable the audio stream */
  37void dce4_audio_enable(struct radeon_device *rdev,
  38                              struct r600_audio_pin *pin,
  39                              u8 enable_mask)
  40{
  41        u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL);
  42
  43        if (!pin)
  44                return;
  45
  46        if (enable_mask) {
  47                tmp |= AUDIO_ENABLED;
  48                if (enable_mask & 1)
  49                        tmp |= PIN0_AUDIO_ENABLED;
  50                if (enable_mask & 2)
  51                        tmp |= PIN1_AUDIO_ENABLED;
  52                if (enable_mask & 4)
  53                        tmp |= PIN2_AUDIO_ENABLED;
  54                if (enable_mask & 8)
  55                        tmp |= PIN3_AUDIO_ENABLED;
  56        } else {
  57                tmp &= ~(AUDIO_ENABLED |
  58                         PIN0_AUDIO_ENABLED |
  59                         PIN1_AUDIO_ENABLED |
  60                         PIN2_AUDIO_ENABLED |
  61                         PIN3_AUDIO_ENABLED);
  62        }
  63
  64        WREG32(AZ_HOT_PLUG_CONTROL, tmp);
  65}
  66
  67void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  68        const struct radeon_hdmi_acr *acr)
  69{
  70        struct drm_device *dev = encoder->dev;
  71        struct radeon_device *rdev = dev->dev_private;
  72        int bpc = 8;
  73
  74        if (encoder->crtc) {
  75                struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
  76                bpc = radeon_crtc->bpc;
  77        }
  78
  79        if (bpc > 8)
  80                WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  81                        HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  82        else
  83                WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  84                        HDMI_ACR_SOURCE |               /* select SW CTS value */
  85                        HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  86
  87        WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr->cts_32khz));
  88        WREG32(HDMI_ACR_32_1 + offset, acr->n_32khz);
  89
  90        WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr->cts_44_1khz));
  91        WREG32(HDMI_ACR_44_1 + offset, acr->n_44_1khz);
  92
  93        WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr->cts_48khz));
  94        WREG32(HDMI_ACR_48_1 + offset, acr->n_48khz);
  95}
  96
  97void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
  98                struct drm_connector *connector, struct drm_display_mode *mode)
  99{
 100        struct radeon_device *rdev = encoder->dev->dev_private;
 101        u32 tmp = 0;
 102
 103        if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 104                if (connector->latency_present[1])
 105                        tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
 106                                AUDIO_LIPSYNC(connector->audio_latency[1]);
 107                else
 108                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 109        } else {
 110                if (connector->latency_present[0])
 111                        tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
 112                                AUDIO_LIPSYNC(connector->audio_latency[0]);
 113                else
 114                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 115        }
 116        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_RESPONSE_LIPSYNC, tmp);
 117}
 118
 119void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
 120        u8 *sadb, int sad_count)
 121{
 122        struct radeon_device *rdev = encoder->dev->dev_private;
 123        u32 tmp;
 124
 125        /* program the speaker allocation */
 126        tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 127        tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 128        /* set HDMI mode */
 129        tmp |= HDMI_CONNECTION;
 130        if (sad_count)
 131                tmp |= SPEAKER_ALLOCATION(sadb[0]);
 132        else
 133                tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 134        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 135}
 136
 137void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
 138        u8 *sadb, int sad_count)
 139{
 140        struct radeon_device *rdev = encoder->dev->dev_private;
 141        u32 tmp;
 142
 143        /* program the speaker allocation */
 144        tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 145        tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
 146        /* set DP mode */
 147        tmp |= DP_CONNECTION;
 148        if (sad_count)
 149                tmp |= SPEAKER_ALLOCATION(sadb[0]);
 150        else
 151                tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 152        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 153}
 154
 155void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
 156        struct cea_sad *sads, int sad_count)
 157{
 158        int i;
 159        struct radeon_device *rdev = encoder->dev->dev_private;
 160        static const u16 eld_reg_to_type[][2] = {
 161                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 162                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 163                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 164                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 165                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 166                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 167                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 168                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 169                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 170                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 171                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 172                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 173        };
 174
 175        for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 176                u32 value = 0;
 177                u8 stereo_freqs = 0;
 178                int max_channels = -1;
 179                int j;
 180
 181                for (j = 0; j < sad_count; j++) {
 182                        struct cea_sad *sad = &sads[j];
 183
 184                        if (sad->format == eld_reg_to_type[i][1]) {
 185                                if (sad->channels > max_channels) {
 186                                        value = MAX_CHANNELS(sad->channels) |
 187                                                DESCRIPTOR_BYTE_2(sad->byte2) |
 188                                                SUPPORTED_FREQUENCIES(sad->freq);
 189                                        max_channels = sad->channels;
 190                                }
 191
 192                                if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 193                                        stereo_freqs |= sad->freq;
 194                                else
 195                                        break;
 196                        }
 197                }
 198
 199                value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
 200
 201                WREG32_ENDPOINT(0, eld_reg_to_type[i][0], value);
 202        }
 203}
 204
 205/*
 206 * build a AVI Info Frame
 207 */
 208void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
 209                              unsigned char *buffer, size_t size)
 210{
 211        uint8_t *frame = buffer + 3;
 212
 213        WREG32(AFMT_AVI_INFO0 + offset,
 214                frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
 215        WREG32(AFMT_AVI_INFO1 + offset,
 216                frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
 217        WREG32(AFMT_AVI_INFO2 + offset,
 218                frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
 219        WREG32(AFMT_AVI_INFO3 + offset,
 220                frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24));
 221
 222        WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
 223                 HDMI_AVI_INFO_LINE(2), /* anything other than 0 */
 224                 ~HDMI_AVI_INFO_LINE_MASK);
 225}
 226
 227void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
 228        struct radeon_crtc *crtc, unsigned int clock)
 229{
 230        unsigned int max_ratio = clock / 24000;
 231        u32 dto_phase;
 232        u32 wallclock_ratio;
 233        u32 value;
 234
 235        if (max_ratio >= 8) {
 236                dto_phase = 192 * 1000;
 237                wallclock_ratio = 3;
 238        } else if (max_ratio >= 4) {
 239                dto_phase = 96 * 1000;
 240                wallclock_ratio = 2;
 241        } else if (max_ratio >= 2) {
 242                dto_phase = 48 * 1000;
 243                wallclock_ratio = 1;
 244        } else {
 245                dto_phase = 24 * 1000;
 246                wallclock_ratio = 0;
 247        }
 248
 249        value = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 250        value |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 251        value &= ~DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 252        WREG32(DCCG_AUDIO_DTO0_CNTL, value);
 253
 254        /* Two dtos; generally use dto0 for HDMI */
 255        value = 0;
 256
 257        if (crtc)
 258                value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 259
 260        WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 261
 262        /* Express [24MHz / target pixel clock] as an exact rational
 263         * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 264         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 265         */
 266        WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
 267        WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
 268}
 269
 270void dce4_dp_audio_set_dto(struct radeon_device *rdev,
 271                           struct radeon_crtc *crtc, unsigned int clock)
 272{
 273        u32 value;
 274
 275        value = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 276        value |= DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 277        WREG32(DCCG_AUDIO_DTO1_CNTL, value);
 278
 279        /* Two dtos; generally use dto1 for DP */
 280        value = 0;
 281        value |= DCCG_AUDIO_DTO_SEL;
 282
 283        if (crtc)
 284                value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 285
 286        WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 287
 288        /* Express [24MHz / target pixel clock] as an exact rational
 289         * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 290         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 291         */
 292        if (ASIC_IS_DCE41(rdev)) {
 293                unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) &
 294                        DENTIST_DPREFCLK_WDIVIDER_MASK) >>
 295                        DENTIST_DPREFCLK_WDIVIDER_SHIFT;
 296                div = radeon_audio_decode_dfs_div(div);
 297
 298                if (div)
 299                        clock = 100 * clock / div;
 300        }
 301
 302        WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
 303        WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
 304}
 305
 306void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset)
 307{
 308        struct drm_device *dev = encoder->dev;
 309        struct radeon_device *rdev = dev->dev_private;
 310
 311        WREG32(HDMI_VBI_PACKET_CONTROL + offset,
 312                HDMI_NULL_SEND |        /* send null packets when required */
 313                HDMI_GC_SEND |          /* send general control packets */
 314                HDMI_GC_CONT);          /* send general control packets every frame */
 315}
 316
 317void dce4_hdmi_set_color_depth(struct drm_encoder *encoder, u32 offset, int bpc)
 318{
 319        struct drm_device *dev = encoder->dev;
 320        struct radeon_device *rdev = dev->dev_private;
 321        struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 322        uint32_t val;
 323
 324        val = RREG32(HDMI_CONTROL + offset);
 325        val &= ~HDMI_DEEP_COLOR_ENABLE;
 326        val &= ~HDMI_DEEP_COLOR_DEPTH_MASK;
 327
 328        switch (bpc) {
 329                case 0:
 330                case 6:
 331                case 8:
 332                case 16:
 333                default:
 334                        DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
 335                                         connector->name, bpc);
 336                        break;
 337                case 10:
 338                        val |= HDMI_DEEP_COLOR_ENABLE;
 339                        val |= HDMI_DEEP_COLOR_DEPTH(HDMI_30BIT_DEEP_COLOR);
 340                        DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
 341                                         connector->name);
 342                        break;
 343                case 12:
 344                        val |= HDMI_DEEP_COLOR_ENABLE;
 345                        val |= HDMI_DEEP_COLOR_DEPTH(HDMI_36BIT_DEEP_COLOR);
 346                        DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
 347                                         connector->name);
 348                        break;
 349        }
 350
 351        WREG32(HDMI_CONTROL + offset, val);
 352}
 353
 354void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset)
 355{
 356        struct drm_device *dev = encoder->dev;
 357        struct radeon_device *rdev = dev->dev_private;
 358
 359        WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
 360                AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
 361
 362        WREG32(AFMT_60958_0 + offset,
 363                AFMT_60958_CS_CHANNEL_NUMBER_L(1));
 364
 365        WREG32(AFMT_60958_1 + offset,
 366                AFMT_60958_CS_CHANNEL_NUMBER_R(2));
 367
 368        WREG32(AFMT_60958_2 + offset,
 369                AFMT_60958_CS_CHANNEL_NUMBER_2(3) |
 370                AFMT_60958_CS_CHANNEL_NUMBER_3(4) |
 371                AFMT_60958_CS_CHANNEL_NUMBER_4(5) |
 372                AFMT_60958_CS_CHANNEL_NUMBER_5(6) |
 373                AFMT_60958_CS_CHANNEL_NUMBER_6(7) |
 374                AFMT_60958_CS_CHANNEL_NUMBER_7(8));
 375
 376        WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset,
 377                AFMT_AUDIO_CHANNEL_ENABLE(0xff));
 378
 379        WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
 380               HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
 381               HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 382
 383        /* allow 60958 channel status and send audio packets fields to be updated */
 384        WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
 385                  AFMT_RESET_FIFO_WHEN_AUDIO_DIS | AFMT_60958_CS_UPDATE);
 386}
 387
 388
 389void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute)
 390{
 391        struct drm_device *dev = encoder->dev;
 392        struct radeon_device *rdev = dev->dev_private;
 393
 394        if (mute)
 395                WREG32_OR(HDMI_GC + offset, HDMI_GC_AVMUTE);
 396        else
 397                WREG32_AND(HDMI_GC + offset, ~HDMI_GC_AVMUTE);
 398}
 399
 400void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
 401{
 402        struct drm_device *dev = encoder->dev;
 403        struct radeon_device *rdev = dev->dev_private;
 404        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 405        struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 406
 407        if (!dig || !dig->afmt)
 408                return;
 409
 410        if (enable) {
 411                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 412
 413                if (connector && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 414                        WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
 415                               HDMI_AVI_INFO_SEND | /* enable AVI info frames */
 416                               HDMI_AVI_INFO_CONT | /* required for audio info values to be updated */
 417                               HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 418                               HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
 419                        WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 420                                  AFMT_AUDIO_SAMPLE_SEND);
 421                } else {
 422                        WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
 423                               HDMI_AVI_INFO_SEND | /* enable AVI info frames */
 424                               HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */
 425                        WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 426                                   ~AFMT_AUDIO_SAMPLE_SEND);
 427                }
 428        } else {
 429                WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 430                           ~AFMT_AUDIO_SAMPLE_SEND);
 431                WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset, 0);
 432        }
 433
 434        dig->afmt->enabled = enable;
 435
 436        DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
 437                  enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
 438}
 439
 440void evergreen_dp_enable(struct drm_encoder *encoder, bool enable)
 441{
 442        struct drm_device *dev = encoder->dev;
 443        struct radeon_device *rdev = dev->dev_private;
 444        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 445        struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 446        struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 447
 448        if (!dig || !dig->afmt)
 449                return;
 450
 451        if (enable && connector &&
 452            drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 453                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 454                struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 455                struct radeon_connector_atom_dig *dig_connector;
 456                uint32_t val;
 457
 458                WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 459                          AFMT_AUDIO_SAMPLE_SEND);
 460
 461                WREG32(EVERGREEN_DP_SEC_TIMESTAMP + dig->afmt->offset,
 462                       EVERGREEN_DP_SEC_TIMESTAMP_MODE(1));
 463
 464                if (!ASIC_IS_DCE6(rdev) && radeon_connector->con_priv) {
 465                        dig_connector = radeon_connector->con_priv;
 466                        val = RREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset);
 467                        val &= ~EVERGREEN_DP_SEC_N_BASE_MULTIPLE(0xf);
 468
 469                        if (dig_connector->dp_clock == 162000)
 470                                val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(3);
 471                        else
 472                                val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(5);
 473
 474                        WREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset, val);
 475                }
 476
 477                WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset,
 478                        EVERGREEN_DP_SEC_ASP_ENABLE |           /* Audio packet transmission */
 479                        EVERGREEN_DP_SEC_ATP_ENABLE |           /* Audio timestamp packet transmission */
 480                        EVERGREEN_DP_SEC_AIP_ENABLE |           /* Audio infoframe packet transmission */
 481                        EVERGREEN_DP_SEC_STREAM_ENABLE);        /* Master enable for secondary stream engine */
 482        } else {
 483                WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset, 0);
 484                WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 485                           ~AFMT_AUDIO_SAMPLE_SEND);
 486        }
 487
 488        dig->afmt->enabled = enable;
 489}
 490