drivers/gpu/drm/radeon/radeon_audio.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Slava Grigorev <slava.grigorev@amd.com>
  23  */
  24
  25 #include <linux/gcd.h>
  26 #include <drm/drmP.h>
  27 #include <drm/drm_crtc.h>
  28 #include "radeon.h"
  29 #include "atom.h"
  30 #include "radeon_audio.h"
  31
  32 void r600_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
  33                 u8 enable_mask);
  34 void dce4_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
  35                 u8 enable_mask);
  36 void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
  37                 u8 enable_mask);
  38 u32 dce6_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg);
  39 void dce6_endpoint_wreg(struct radeon_device *rdev,
  40                 u32 offset, u32 reg, u32 v);
  41 void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
  42                 struct cea_sad *sads, int sad_count);
  43 void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
  44                 struct cea_sad *sads, int sad_count);
  45 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
  46                 struct cea_sad *sads, int sad_count);
  47 void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  48                 u8 *sadb, int sad_count);
  49 void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  50                 u8 *sadb, int sad_count);
  51 void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  52                 u8 *sadb, int sad_count);
  53 void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  54                 u8 *sadb, int sad_count);
  55 void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  56                 u8 *sadb, int sad_count);
  57 void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  58                 u8 *sadb, int sad_count);
  59 void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
  60                 struct drm_connector *connector, struct drm_display_mode *mode);
  61 void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
  62                 struct drm_connector *connector, struct drm_display_mode *mode);
  63 struct r600_audio_pin* r600_audio_get_pin(struct radeon_device *rdev);
  64 struct r600_audio_pin* dce6_audio_get_pin(struct radeon_device *rdev);
  65 void dce6_afmt_select_pin(struct drm_encoder *encoder);
  66 void r600_hdmi_audio_set_dto(struct radeon_device *rdev,
  67         struct radeon_crtc *crtc, unsigned int clock);
  68 void dce3_2_audio_set_dto(struct radeon_device *rdev,
  69         struct radeon_crtc *crtc, unsigned int clock);
  70 void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
  71         struct radeon_crtc *crtc, unsigned int clock);
  72 void dce4_dp_audio_set_dto(struct radeon_device *rdev,
  73         struct radeon_crtc *crtc, unsigned int clock);
  74 void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,
  75         struct radeon_crtc *crtc, unsigned int clock);
  76 void dce6_dp_audio_set_dto(struct radeon_device *rdev,
  77         struct radeon_crtc *crtc, unsigned int clock);
  78 void r600_update_avi_infoframe(struct radeon_device *rdev, u32 offset,
  79         unsigned char *buffer, size_t size);
  80 void evergreen_update_avi_infoframe(struct radeon_device *rdev, u32 offset,
  81         unsigned char *buffer, size_t size);
  82 void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  83         const struct radeon_hdmi_acr *acr);
  84 void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  85         const struct radeon_hdmi_acr *acr);
  86 void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  87         const struct radeon_hdmi_acr *acr);
  88 void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
  89 void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
  90
  91 static const u32 pin_offsets[7] =
  92 {
  93         (0x5e00 - 0x5e00),
  94         (0x5e18 - 0x5e00),
  95         (0x5e30 - 0x5e00),
  96         (0x5e48 - 0x5e00),
  97         (0x5e60 - 0x5e00),
  98         (0x5e78 - 0x5e00),
  99         (0x5e90 - 0x5e00),
 100 };
 101
 102 static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 103 {
 104         return RREG32(reg);
 105 }
 106
 107 static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
 108                 u32 reg, u32 v)
 109 {
 110         WREG32(reg, v);
 111 }
 112
 113 static struct radeon_audio_basic_funcs r600_funcs = {
 114         .endpoint_rreg = radeon_audio_rreg,
 115         .endpoint_wreg = radeon_audio_wreg,
 116         .enable = r600_audio_enable,
 117         .update_avi_infoframe = r600_update_avi_infoframe,
 118 };
 119
 120 static struct radeon_audio_basic_funcs dce32_funcs = {
 121         .endpoint_rreg = radeon_audio_rreg,
 122         .endpoint_wreg = radeon_audio_wreg,
 123         .enable = r600_audio_enable,
 124         .update_avi_infoframe = r600_update_avi_infoframe,
 125 };
 126
 127 static struct radeon_audio_basic_funcs dce4_funcs = {
 128         .endpoint_rreg = radeon_audio_rreg,
 129         .endpoint_wreg = radeon_audio_wreg,
 130         .enable = dce4_audio_enable,
 131         .update_avi_infoframe = evergreen_update_avi_infoframe,
 132 };
 133
 134 static struct radeon_audio_basic_funcs dce6_funcs = {
 135         .endpoint_rreg = dce6_endpoint_rreg,
 136         .endpoint_wreg = dce6_endpoint_wreg,
 137         .enable = dce6_audio_enable,
 138         .update_avi_infoframe = evergreen_update_avi_infoframe,
 139 };
 140
 141 static struct radeon_audio_funcs r600_hdmi_funcs = {
 142         .get_pin = r600_audio_get_pin,
 143         .set_dto = r600_hdmi_audio_set_dto,
 144         .update_acr = r600_hdmi_update_acr,
 145         .set_vbi_packet = r600_set_vbi_packet,
 146 };
 147
 148 static struct radeon_audio_funcs dce32_hdmi_funcs = {
 149         .get_pin = r600_audio_get_pin,
 150         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 151         .write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,
 152         .set_dto = dce3_2_audio_set_dto,
 153         .update_acr = dce3_2_hdmi_update_acr,
 154         .set_vbi_packet = r600_set_vbi_packet,
 155 };
 156
 157 static struct radeon_audio_funcs dce32_dp_funcs = {
 158         .get_pin = r600_audio_get_pin,
 159         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 160         .write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,
 161         .set_dto = dce3_2_audio_set_dto,
 162 };
 163
 164 static struct radeon_audio_funcs dce4_hdmi_funcs = {
 165         .get_pin = r600_audio_get_pin,
 166         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 167         .write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,
 168         .write_latency_fields = dce4_afmt_write_latency_fields,
 169         .set_dto = dce4_hdmi_audio_set_dto,
 170         .update_acr = evergreen_hdmi_update_acr,
 171         .set_vbi_packet = dce4_set_vbi_packet,
 172 };
 173
 174 static struct radeon_audio_funcs dce4_dp_funcs = {
 175         .get_pin = r600_audio_get_pin,
 176         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 177         .write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,
 178         .write_latency_fields = dce4_afmt_write_latency_fields,
 179         .set_dto = dce4_dp_audio_set_dto,
 180 };
 181
 182 static struct radeon_audio_funcs dce6_hdmi_funcs = {
 183         .select_pin = dce6_afmt_select_pin,
 184         .get_pin = dce6_audio_get_pin,
 185         .write_sad_regs = dce6_afmt_write_sad_regs,
 186         .write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,
 187         .write_latency_fields = dce6_afmt_write_latency_fields,
 188         .set_dto = dce6_hdmi_audio_set_dto,
 189         .update_acr = evergreen_hdmi_update_acr,
 190         .set_vbi_packet = dce4_set_vbi_packet,
 191 };
 192
 193 static struct radeon_audio_funcs dce6_dp_funcs = {
 194         .select_pin = dce6_afmt_select_pin,
 195         .get_pin = dce6_audio_get_pin,
 196         .write_sad_regs = dce6_afmt_write_sad_regs,
 197         .write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,
 198         .write_latency_fields = dce6_afmt_write_latency_fields,
 199         .set_dto = dce6_dp_audio_set_dto,
 200 };
 201
 202 static void radeon_audio_interface_init(struct radeon_device *rdev)
 203 {
 204         if (ASIC_IS_DCE6(rdev)) {
 205                 rdev->audio.funcs = &dce6_funcs;
 206                 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
 207                 rdev->audio.dp_funcs = &dce6_dp_funcs;
 208         } else if (ASIC_IS_DCE4(rdev)) {
 209                 rdev->audio.funcs = &dce4_funcs;
 210                 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
 211                 rdev->audio.dp_funcs = &dce4_dp_funcs;
 212         } else if (ASIC_IS_DCE32(rdev)) {
 213                 rdev->audio.funcs = &dce32_funcs;
 214                 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
 215                 rdev->audio.dp_funcs = &dce32_dp_funcs;
 216         } else {
 217                 rdev->audio.funcs = &r600_funcs;
 218                 rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
 219                 rdev->audio.dp_funcs = 0;
 220         }
 221 }
 222
 223 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
 224 {
 225         return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
 226 }
 227
 228 int radeon_audio_init(struct radeon_device *rdev)
 229 {
 230         int i;
 231
 232         if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
 233                 return 0;
 234
 235         rdev->audio.enabled = true;
 236
 237         if (ASIC_IS_DCE83(rdev))                /* KB: 2 streams, 3 endpoints */
 238                 rdev->audio.num_pins = 3;
 239         else if (ASIC_IS_DCE81(rdev))   /* KV: 4 streams, 7 endpoints */
 240                 rdev->audio.num_pins = 7;
 241         else if (ASIC_IS_DCE8(rdev))    /* BN/HW: 6 streams, 7 endpoints */
 242                 rdev->audio.num_pins = 7;
 243         else if (ASIC_IS_DCE64(rdev))   /* OL: 2 streams, 2 endpoints */
 244                 rdev->audio.num_pins = 2;
 245         else if (ASIC_IS_DCE61(rdev))   /* TN: 4 streams, 6 endpoints */
 246                 rdev->audio.num_pins = 6;
 247         else if (ASIC_IS_DCE6(rdev))    /* SI: 6 streams, 6 endpoints */
 248                 rdev->audio.num_pins = 6;
 249         else
 250                 rdev->audio.num_pins = 1;
 251
 252         for (i = 0; i < rdev->audio.num_pins; i++) {
 253                 rdev->audio.pin[i].channels = -1;
 254                 rdev->audio.pin[i].rate = -1;
 255                 rdev->audio.pin[i].bits_per_sample = -1;
 256                 rdev->audio.pin[i].status_bits = 0;
 257                 rdev->audio.pin[i].category_code = 0;
 258                 rdev->audio.pin[i].connected = false;
 259                 rdev->audio.pin[i].offset = pin_offsets[i];
 260                 rdev->audio.pin[i].id = i;
 261         }
 262
 263         radeon_audio_interface_init(rdev);
 264
 265         /* disable audio.  it will be set up later */
 266         for (i = 0; i < rdev->audio.num_pins; i++)
 267                 radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
 268
 269         return 0;
 270 }
 271
 272 void radeon_audio_detect(struct drm_connector *connector,
 273         enum drm_connector_status status)
 274 {
 275         if (!connector || !connector->encoder)
 276                 return;
 277
 278         if (status == connector_status_connected) {
 279                 int sink_type;
 280                 struct radeon_device *rdev = connector->encoder->dev->dev_private;
 281                 struct radeon_connector *radeon_connector;
 282                 struct radeon_encoder *radeon_encoder =
 283                         to_radeon_encoder(connector->encoder);
 284
 285                 if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 286                         radeon_encoder->audio = 0;
 287                         return;
 288                 }
 289
 290                 radeon_connector = to_radeon_connector(connector);
 291                 sink_type = radeon_dp_getsinktype(radeon_connector);
 292
 293                 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
 294                         sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
 295                         radeon_encoder->audio = rdev->audio.dp_funcs;
 296                 else
 297                         radeon_encoder->audio = rdev->audio.hdmi_funcs;
 298                 /* TODO: set up the sads, etc. and set the audio enable_mask */
 299         } else {
 300                 /* TODO: reset the audio enable_mask */
 301         }
 302 }
 303
 304 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 305 {
 306         if (rdev->audio.funcs->endpoint_rreg)
 307                 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
 308
 309         return 0;
 310 }
 311
 312 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
 313         u32 reg, u32 v)
 314 {
 315         if (rdev->audio.funcs->endpoint_wreg)
 316                 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
 317 }
 318
 319 void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
 320 {
 321         struct radeon_encoder *radeon_encoder;
 322         struct drm_connector *connector;
 323         struct radeon_connector *radeon_connector = NULL;
 324         struct cea_sad *sads;
 325         int sad_count;
 326
 327         list_for_each_entry(connector,
 328                 &encoder->dev->mode_config.connector_list, head) {
 329                 if (connector->encoder == encoder) {
 330                         radeon_connector = to_radeon_connector(connector);
 331                         break;
 332                 }
 333         }
 334
 335         if (!radeon_connector) {
 336                 DRM_ERROR("Couldn't find encoder's connector\n");
 337                 return;
 338         }
 339
 340         sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 341         if (sad_count <= 0) {
 342                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 343                 return;
 344         }
 345         BUG_ON(!sads);
 346
 347         radeon_encoder = to_radeon_encoder(encoder);
 348
 349         if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
 350                 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
 351
 352         kfree(sads);
 353 }
 354
 355 void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
 356 {
 357         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 358     struct drm_connector *connector;
 359     struct radeon_connector *radeon_connector = NULL;
 360     u8 *sadb = NULL;
 361     int sad_count;
 362
 363     list_for_each_entry(connector,
 364                 &encoder->dev->mode_config.connector_list, head) {
 365         if (connector->encoder == encoder) {
 366             radeon_connector = to_radeon_connector(connector);
 367             break;
 368         }
 369     }
 370
 371     if (!radeon_connector) {
 372         DRM_ERROR("Couldn't find encoder's connector\n");
 373         return;
 374     }
 375
 376     sad_count = drm_edid_to_speaker_allocation(
 377                 radeon_connector_edid(connector), &sadb);
 378     if (sad_count < 0) {
 379         DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
 380                         sad_count);
 381         sad_count = 0;
 382     }
 383
 384         if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
 385                 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
 386
 387     kfree(sadb);
 388 }
 389
 390 void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
 391         struct drm_display_mode *mode)
 392 {
 393         struct radeon_encoder *radeon_encoder;
 394         struct drm_connector *connector;
 395         struct radeon_connector *radeon_connector = 0;
 396
 397         list_for_each_entry(connector,
 398                 &encoder->dev->mode_config.connector_list, head) {
 399                 if (connector->encoder == encoder) {
 400                         radeon_connector = to_radeon_connector(connector);
 401                         break;
 402                 }
 403         }
 404
 405         if (!radeon_connector) {
 406                 DRM_ERROR("Couldn't find encoder's connector\n");
 407                 return;
 408         }
 409
 410         radeon_encoder = to_radeon_encoder(encoder);
 411
 412         if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
 413                 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
 414 }
 415
 416 struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)
 417 {
 418         struct radeon_device *rdev = encoder->dev->dev_private;
 419         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 420
 421         if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
 422                 return radeon_encoder->audio->get_pin(rdev);
 423
 424         return NULL;
 425 }
 426
 427 void radeon_audio_select_pin(struct drm_encoder *encoder)
 428 {
 429         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 430
 431         if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
 432                 radeon_encoder->audio->select_pin(encoder);
 433 }
 434
 435 void radeon_audio_enable(struct radeon_device *rdev,
 436         struct r600_audio_pin *pin, u8 enable_mask)
 437 {
 438         if (rdev->audio.funcs->enable)
 439                 rdev->audio.funcs->enable(rdev, pin, enable_mask);
 440 }
 441
 442 void radeon_audio_fini(struct radeon_device *rdev)
 443 {
 444         int i;
 445
 446         if (!rdev->audio.enabled)
 447                 return;
 448
 449         for (i = 0; i < rdev->audio.num_pins; i++)
 450                 radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
 451
 452         rdev->audio.enabled = false;
 453 }
 454
 455 void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)
 456 {
 457         struct radeon_device *rdev = encoder->dev->dev_private;
 458         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 459         struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);
 460
 461         if (radeon_encoder->audio && radeon_encoder->audio->set_dto)
 462                 radeon_encoder->audio->set_dto(rdev, crtc, clock);
 463 }
 464
 465 void radeon_update_avi_infoframe(struct drm_encoder *encoder, void *buffer,
 466         size_t size)
 467 {
 468     struct radeon_device *rdev = encoder->dev->dev_private;
 469         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 470         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 471
 472         if (dig && dig->afmt && rdev->audio.funcs->update_avi_infoframe)
 473                 rdev->audio.funcs->update_avi_infoframe(rdev, dig->afmt->offset,
 474                         buffer, size);
 475 }
 476
 477 /*
 478  * calculate CTS and N values if they are not found in the table
 479  */
 480 static void radeon_audio_calc_cts(unsigned int clock, int *CTS, int *N, int freq)
 481 {
 482         int n, cts;
 483         unsigned long div, mul;
 484
 485         /* Safe, but overly large values */
 486         n = 128 * freq;
 487         cts = clock * 1000;
 488
 489         /* Smallest valid fraction */
 490         div = gcd(n, cts);
 491
 492         n /= div;
 493         cts /= div;
 494
 495         /*
 496          * The optimal N is 128*freq/1000. Calculate the closest larger
 497          * value that doesn't truncate any bits.
 498          */
 499         mul = ((128*freq/1000) + (n-1))/n;
 500
 501         n *= mul;
 502         cts *= mul;
 503
 504         /* Check that we are in spec (not always possible) */
 505         if (n < (128*freq/1500))
 506                 printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n");
 507         if (n > (128*freq/300))
 508                 printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n");
 509
 510         *N = n;
 511         *CTS = cts;
 512
 513         DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
 514                 *N, *CTS, freq);
 515 }
 516
 517 static const struct radeon_hdmi_acr* radeon_audio_acr(unsigned int clock)
 518 {
 519         static struct radeon_hdmi_acr res;
 520         u8 i;
 521
 522         static const struct radeon_hdmi_acr hdmi_predefined_acr[] = {
 523                 /*       32kHz    44.1kHz   48kHz    */
 524                 /* Clock      N     CTS      N     CTS      N     CTS */
 525                 {  25175,  4096,  25175, 28224, 125875,  6144,  25175 }, /*  25,20/1.001 MHz */
 526                 {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */
 527                 {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */
 528                 {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */
 529                 {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */
 530                 {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */
 531                 {  74176,  4096,  74176,  5733,  75335,  6144,  74176 }, /*  74.25/1.001 MHz */
 532                 {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */
 533                 { 148352,  4096, 148352,  5733, 150670,  6144, 148352 }, /* 148.50/1.001 MHz */
 534                 { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */
 535         };
 536
 537         /* Precalculated values for common clocks */
 538         for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)
 539                 if (hdmi_predefined_acr[i].clock == clock)
 540                         return &hdmi_predefined_acr[i];
 541
 542         /* And odd clocks get manually calculated */
 543         radeon_audio_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
 544         radeon_audio_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
 545         radeon_audio_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
 546
 547         return &res;
 548 }
 549
 550 /*
 551  * update the N and CTS parameters for a given pixel clock rate
 552  */
 553 void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)
 554 {
 555     const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);
 556     struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 557     struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 558
 559         if (!dig || !dig->afmt)
 560                 return;
 561
 562         if (radeon_encoder->audio && radeon_encoder->audio->update_acr)
 563                 radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);
 564 }
 565
 566 void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)
 567 {
 568     struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 569     struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 570
 571         if (!dig || !dig->afmt)
 572                 return;
 573
 574         if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)
 575                 radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);
 576 }