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
  29#include <drm/radeon_drm.h>
  30#include "evergreen_hdmi.h"
  31#include "radeon.h"
  32#include "radeon_asic.h"
  33#include "radeon_audio.h"
  34#include "evergreend.h"
  35#include "atom.h"
  36
  37/* enable the audio stream */
  38void dce4_audio_enable(struct radeon_device *rdev,
  39                              struct r600_audio_pin *pin,
  40                              u8 enable_mask)
  41{
  42        u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL);
  43
  44        if (!pin)
  45                return;
  46
  47        if (enable_mask) {
  48                tmp |= AUDIO_ENABLED;
  49                if (enable_mask & 1)
  50                        tmp |= PIN0_AUDIO_ENABLED;
  51                if (enable_mask & 2)
  52                        tmp |= PIN1_AUDIO_ENABLED;
  53                if (enable_mask & 4)
  54                        tmp |= PIN2_AUDIO_ENABLED;
  55                if (enable_mask & 8)
  56                        tmp |= PIN3_AUDIO_ENABLED;
  57        } else {
  58                tmp &= ~(AUDIO_ENABLED |
  59                         PIN0_AUDIO_ENABLED |
  60                         PIN1_AUDIO_ENABLED |
  61                         PIN2_AUDIO_ENABLED |
  62                         PIN3_AUDIO_ENABLED);
  63        }
  64
  65        WREG32(AZ_HOT_PLUG_CONTROL, tmp);
  66}
  67
  68void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  69        const struct radeon_hdmi_acr *acr)
  70{
  71        struct drm_device *dev = encoder->dev;
  72        struct radeon_device *rdev = dev->dev_private;
  73        int bpc = 8;
  74
  75        if (encoder->crtc) {
  76                struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
  77                bpc = radeon_crtc->bpc;
  78        }
  79
  80        if (bpc > 8)
  81                WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  82                        HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  83        else
  84                WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  85                        HDMI_ACR_SOURCE |               /* select SW CTS value */
  86                        HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  87
  88        WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr->cts_32khz));
  89        WREG32(HDMI_ACR_32_1 + offset, acr->n_32khz);
  90
  91        WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr->cts_44_1khz));
  92        WREG32(HDMI_ACR_44_1 + offset, acr->n_44_1khz);
  93
  94        WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr->cts_48khz));
  95        WREG32(HDMI_ACR_48_1 + offset, acr->n_48khz);
  96}
  97
  98void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
  99                struct drm_connector *connector, struct drm_display_mode *mode)
 100{
 101        struct radeon_device *rdev = encoder->dev->dev_private;
 102        u32 tmp = 0;
 103
 104        if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 105                if (connector->latency_present[1])
 106                        tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
 107                                AUDIO_LIPSYNC(connector->audio_latency[1]);
 108                else
 109                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 110        } else {
 111                if (connector->latency_present[0])
 112                        tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
 113                                AUDIO_LIPSYNC(connector->audio_latency[0]);
 114                else
 115                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 116        }
 117        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_RESPONSE_LIPSYNC, tmp);
 118}
 119
 120void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
 121        u8 *sadb, int sad_count)
 122{
 123        struct radeon_device *rdev = encoder->dev->dev_private;
 124        u32 tmp;
 125
 126        /* program the speaker allocation */
 127        tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 128        tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 129        /* set HDMI mode */
 130        tmp |= HDMI_CONNECTION;
 131        if (sad_count)
 132                tmp |= SPEAKER_ALLOCATION(sadb[0]);
 133        else
 134                tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 135        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 136}
 137
 138void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
 139        u8 *sadb, int sad_count)
 140{
 141        struct radeon_device *rdev = encoder->dev->dev_private;
 142        u32 tmp;
 143
 144        /* program the speaker allocation */
 145        tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 146        tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
 147        /* set DP mode */
 148        tmp |= DP_CONNECTION;
 149        if (sad_count)
 150                tmp |= SPEAKER_ALLOCATION(sadb[0]);
 151        else
 152                tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 153        WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 154}
 155
 156void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
 157        struct cea_sad *sads, int sad_count)
 158{
 159        int i;
 160        struct radeon_device *rdev = encoder->dev->dev_private;
 161        static const u16 eld_reg_to_type[][2] = {
 162                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 163                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 164                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 165                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 166                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 167                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 168                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 169                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 170                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 171                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 172                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 173                { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 174        };
 175
 176        for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 177                u32 value = 0;
 178                u8 stereo_freqs = 0;
 179                int max_channels = -1;
 180                int j;
 181
 182                for (j = 0; j < sad_count; j++) {
 183                        struct cea_sad *sad = &sads[j];
 184
 185                        if (sad->format == eld_reg_to_type[i][1]) {
 186                                if (sad->channels > max_channels) {
 187                                        value = MAX_CHANNELS(sad->channels) |
 188                                                DESCRIPTOR_BYTE_2(sad->byte2) |
 189                                                SUPPORTED_FREQUENCIES(sad->freq);
 190                                        max_channels = sad->channels;
 191                                }
 192
 193                                if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 194                                        stereo_freqs |= sad->freq;
 195                                else
 196                                        break;
 197                        }
 198                }
 199
 200                value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
 201
 202                WREG32_ENDPOINT(0, eld_reg_to_type[i][0], value);
 203        }
 204}
 205
 206/*
 207 * build a AVI Info Frame
 208 */
 209void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
 210                              unsigned char *buffer, size_t size)
 211{
 212        uint8_t *frame = buffer + 3;
 213
 214        WREG32(AFMT_AVI_INFO0 + offset,
 215                frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
 216        WREG32(AFMT_AVI_INFO1 + offset,
 217                frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
 218        WREG32(AFMT_AVI_INFO2 + offset,
 219                frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
 220        WREG32(AFMT_AVI_INFO3 + offset,
 221                frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24));
 222
 223        WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
 224                 HDMI_AVI_INFO_LINE(2), /* anything other than 0 */
 225                 ~HDMI_AVI_INFO_LINE_MASK);
 226}
 227
 228void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
 229        struct radeon_crtc *crtc, unsigned int clock)
 230{
 231        unsigned int max_ratio = clock / 24000;
 232        u32 dto_phase;
 233        u32 wallclock_ratio;
 234        u32 value;
 235
 236        if (max_ratio >= 8) {
 237                dto_phase = 192 * 1000;
 238                wallclock_ratio = 3;
 239        } else if (max_ratio >= 4) {
 240                dto_phase = 96 * 1000;
 241                wallclock_ratio = 2;
 242        } else if (max_ratio >= 2) {
 243                dto_phase = 48 * 1000;
 244                wallclock_ratio = 1;
 245        } else {
 246                dto_phase = 24 * 1000;
 247                wallclock_ratio = 0;
 248        }
 249
 250        value = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 251        value |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 252        value &= ~DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 253        WREG32(DCCG_AUDIO_DTO0_CNTL, value);
 254
 255        /* Two dtos; generally use dto0 for HDMI */
 256        value = 0;
 257
 258        if (crtc)
 259                value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 260
 261        WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 262
 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        WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
 268        WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
 269}
 270
 271void dce4_dp_audio_set_dto(struct radeon_device *rdev,
 272                           struct radeon_crtc *crtc, unsigned int clock)
 273{
 274        u32 value;
 275
 276        value = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 277        value |= DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 278        WREG32(DCCG_AUDIO_DTO1_CNTL, value);
 279
 280        /* Two dtos; generally use dto1 for DP */
 281        value = 0;
 282        value |= DCCG_AUDIO_DTO_SEL;
 283
 284        if (crtc)
 285                value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 286
 287        WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 288
 289        /* Express [24MHz / target pixel clock] as an exact rational
 290         * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 291         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 292         */
 293        if (ASIC_IS_DCE41(rdev)) {
 294                unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) &
 295                        DENTIST_DPREFCLK_WDIVIDER_MASK) >>
 296                        DENTIST_DPREFCLK_WDIVIDER_SHIFT;
 297                div = radeon_audio_decode_dfs_div(div);
 298
 299                if (div)
 300                        clock = 100 * clock / div;
 301        }
 302
 303        WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
 304        WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
 305}
 306
 307void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset)
 308{
 309        struct drm_device *dev = encoder->dev;
 310        struct radeon_device *rdev = dev->dev_private;
 311
 312        WREG32(HDMI_VBI_PACKET_CONTROL + offset,
 313                HDMI_NULL_SEND |        /* send null packets when required */
 314                HDMI_GC_SEND |          /* send general control packets */
 315                HDMI_GC_CONT);          /* send general control packets every frame */
 316}
 317
 318void dce4_hdmi_set_color_depth(struct drm_encoder *encoder, u32 offset, int bpc)
 319{
 320        struct drm_device *dev = encoder->dev;
 321        struct radeon_device *rdev = dev->dev_private;
 322        struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 323        uint32_t val;
 324
 325        val = RREG32(HDMI_CONTROL + offset);
 326        val &= ~HDMI_DEEP_COLOR_ENABLE;
 327        val &= ~HDMI_DEEP_COLOR_DEPTH_MASK;
 328
 329        switch (bpc) {
 330                case 0:
 331                case 6:
 332                case 8:
 333                case 16:
 334                default:
 335                        DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
 336                                         connector->name, bpc);
 337                        break;
 338                case 10:
 339                        val |= HDMI_DEEP_COLOR_ENABLE;
 340                        val |= HDMI_DEEP_COLOR_DEPTH(HDMI_30BIT_DEEP_COLOR);
 341                        DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
 342                                         connector->name);
 343                        break;
 344                case 12:
 345                        val |= HDMI_DEEP_COLOR_ENABLE;
 346                        val |= HDMI_DEEP_COLOR_DEPTH(HDMI_36BIT_DEEP_COLOR);
 347                        DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
 348                                         connector->name);
 349                        break;
 350        }
 351
 352        WREG32(HDMI_CONTROL + offset, val);
 353}
 354
 355void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset)
 356{
 357        struct drm_device *dev = encoder->dev;
 358        struct radeon_device *rdev = dev->dev_private;
 359
 360        WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
 361                AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
 362
 363        WREG32(AFMT_60958_0 + offset,
 364                AFMT_60958_CS_CHANNEL_NUMBER_L(1));
 365
 366        WREG32(AFMT_60958_1 + offset,
 367                AFMT_60958_CS_CHANNEL_NUMBER_R(2));
 368
 369        WREG32(AFMT_60958_2 + offset,
 370                AFMT_60958_CS_CHANNEL_NUMBER_2(3) |
 371                AFMT_60958_CS_CHANNEL_NUMBER_3(4) |
 372                AFMT_60958_CS_CHANNEL_NUMBER_4(5) |
 373                AFMT_60958_CS_CHANNEL_NUMBER_5(6) |
 374                AFMT_60958_CS_CHANNEL_NUMBER_6(7) |
 375                AFMT_60958_CS_CHANNEL_NUMBER_7(8));
 376
 377        WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset,
 378                AFMT_AUDIO_CHANNEL_ENABLE(0xff));
 379
 380        WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
 381               HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
 382               HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 383
 384        /* allow 60958 channel status and send audio packets fields to be updated */
 385        WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
 386                  AFMT_RESET_FIFO_WHEN_AUDIO_DIS | AFMT_60958_CS_UPDATE);
 387}
 388
 389
 390void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute)
 391{
 392        struct drm_device *dev = encoder->dev;
 393        struct radeon_device *rdev = dev->dev_private;
 394
 395        if (mute)
 396                WREG32_OR(HDMI_GC + offset, HDMI_GC_AVMUTE);
 397        else
 398                WREG32_AND(HDMI_GC + offset, ~HDMI_GC_AVMUTE);
 399}
 400
 401void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
 402{
 403        struct drm_device *dev = encoder->dev;
 404        struct radeon_device *rdev = dev->dev_private;
 405        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 406        struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 407
 408        if (!dig || !dig->afmt)
 409                return;
 410
 411        if (enable) {
 412                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 413
 414                if (connector && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 415                        WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
 416                               HDMI_AVI_INFO_SEND | /* enable AVI info frames */
 417                               HDMI_AVI_INFO_CONT | /* required for audio info values to be updated */
 418                               HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 419                               HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
 420                        WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 421                                  AFMT_AUDIO_SAMPLE_SEND);
 422                } else {
 423                        WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
 424                               HDMI_AVI_INFO_SEND | /* enable AVI info frames */
 425                               HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */
 426                        WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 427                                   ~AFMT_AUDIO_SAMPLE_SEND);
 428                }
 429        } else {
 430                WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 431                           ~AFMT_AUDIO_SAMPLE_SEND);
 432                WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset, 0);
 433        }
 434
 435        dig->afmt->enabled = enable;
 436
 437        DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
 438                  enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
 439}
 440
 441void evergreen_dp_enable(struct drm_encoder *encoder, bool enable)
 442{
 443        struct drm_device *dev = encoder->dev;
 444        struct radeon_device *rdev = dev->dev_private;
 445        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 446        struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 447        struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 448
 449        if (!dig || !dig->afmt)
 450                return;
 451
 452        if (enable && connector &&
 453            drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 454                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 455                struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 456                struct radeon_connector_atom_dig *dig_connector;
 457                uint32_t val;
 458
 459                WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 460                          AFMT_AUDIO_SAMPLE_SEND);
 461
 462                WREG32(EVERGREEN_DP_SEC_TIMESTAMP + dig->afmt->offset,
 463                       EVERGREEN_DP_SEC_TIMESTAMP_MODE(1));
 464
 465                if (!ASIC_IS_DCE6(rdev) && radeon_connector->con_priv) {
 466                        dig_connector = radeon_connector->con_priv;
 467                        val = RREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset);
 468                        val &= ~EVERGREEN_DP_SEC_N_BASE_MULTIPLE(0xf);
 469
 470                        if (dig_connector->dp_clock == 162000)
 471                                val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(3);
 472                        else
 473                                val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(5);
 474
 475                        WREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset, val);
 476                }
 477
 478                WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset,
 479                        EVERGREEN_DP_SEC_ASP_ENABLE |           /* Audio packet transmission */
 480                        EVERGREEN_DP_SEC_ATP_ENABLE |           /* Audio timestamp packet transmission */
 481                        EVERGREEN_DP_SEC_AIP_ENABLE |           /* Audio infoframe packet transmission */
 482                        EVERGREEN_DP_SEC_STREAM_ENABLE);        /* Master enable for secondary stream engine */
 483        } else {
 484                WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset, 0);
 485                WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
 486                           ~AFMT_AUDIO_SAMPLE_SEND);
 487        }
 488
 489        dig->afmt->enabled = enable;
 490}
 491