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_set_avi_packet(struct radeon_device *rdev, u32 offset,
  79         unsigned char *buffer, size_t size);
  80 void evergreen_set_avi_packet(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 void dce4_hdmi_set_color_depth(struct drm_encoder *encoder,
  91         u32 offset, int bpc);
  92 void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset);
  93 void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset);
  94 void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset);
  95 void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
  96 void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
  97 void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
  98 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
  99         struct drm_display_mode *mode);
 100 static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
 101         struct drm_display_mode *mode);
 102 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable);
 103 void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable);
 104 void evergreen_dp_enable(struct drm_encoder *encoder, bool enable);
 105
 106 static const u32 pin_offsets[7] =
 107 {
 108         (0x5e00 - 0x5e00),
 109         (0x5e18 - 0x5e00),
 110         (0x5e30 - 0x5e00),
 111         (0x5e48 - 0x5e00),
 112         (0x5e60 - 0x5e00),
 113         (0x5e78 - 0x5e00),
 114         (0x5e90 - 0x5e00),
 115 };
 116
 117 static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 118 {
 119         return RREG32(reg);
 120 }
 121
 122 static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
 123                 u32 reg, u32 v)
 124 {
 125         WREG32(reg, v);
 126 }
 127
 128 static struct radeon_audio_basic_funcs r600_funcs = {
 129         .endpoint_rreg = radeon_audio_rreg,
 130         .endpoint_wreg = radeon_audio_wreg,
 131         .enable = r600_audio_enable,
 132 };
 133
 134 static struct radeon_audio_basic_funcs dce32_funcs = {
 135         .endpoint_rreg = radeon_audio_rreg,
 136         .endpoint_wreg = radeon_audio_wreg,
 137         .enable = r600_audio_enable,
 138 };
 139
 140 static struct radeon_audio_basic_funcs dce4_funcs = {
 141         .endpoint_rreg = radeon_audio_rreg,
 142         .endpoint_wreg = radeon_audio_wreg,
 143         .enable = dce4_audio_enable,
 144 };
 145
 146 static struct radeon_audio_basic_funcs dce6_funcs = {
 147         .endpoint_rreg = dce6_endpoint_rreg,
 148         .endpoint_wreg = dce6_endpoint_wreg,
 149         .enable = dce6_audio_enable,
 150 };
 151
 152 static struct radeon_audio_funcs r600_hdmi_funcs = {
 153         .get_pin = r600_audio_get_pin,
 154         .set_dto = r600_hdmi_audio_set_dto,
 155         .update_acr = r600_hdmi_update_acr,
 156         .set_vbi_packet = r600_set_vbi_packet,
 157         .set_avi_packet = r600_set_avi_packet,
 158         .set_audio_packet = r600_set_audio_packet,
 159         .set_mute = r600_set_mute,
 160         .mode_set = radeon_audio_hdmi_mode_set,
 161         .dpms = r600_hdmi_enable,
 162 };
 163
 164 static struct radeon_audio_funcs dce32_hdmi_funcs = {
 165         .get_pin = r600_audio_get_pin,
 166         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 167         .write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,
 168         .set_dto = dce3_2_audio_set_dto,
 169         .update_acr = dce3_2_hdmi_update_acr,
 170         .set_vbi_packet = r600_set_vbi_packet,
 171         .set_avi_packet = r600_set_avi_packet,
 172         .set_audio_packet = dce3_2_set_audio_packet,
 173         .set_mute = dce3_2_set_mute,
 174         .mode_set = radeon_audio_hdmi_mode_set,
 175         .dpms = r600_hdmi_enable,
 176 };
 177
 178 static struct radeon_audio_funcs dce32_dp_funcs = {
 179         .get_pin = r600_audio_get_pin,
 180         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 181         .write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,
 182         .set_dto = dce3_2_audio_set_dto,
 183         .set_avi_packet = r600_set_avi_packet,
 184         .set_audio_packet = dce3_2_set_audio_packet,
 185 };
 186
 187 static struct radeon_audio_funcs dce4_hdmi_funcs = {
 188         .get_pin = r600_audio_get_pin,
 189         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 190         .write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,
 191         .write_latency_fields = dce4_afmt_write_latency_fields,
 192         .set_dto = dce4_hdmi_audio_set_dto,
 193         .update_acr = evergreen_hdmi_update_acr,
 194         .set_vbi_packet = dce4_set_vbi_packet,
 195         .set_color_depth = dce4_hdmi_set_color_depth,
 196         .set_avi_packet = evergreen_set_avi_packet,
 197         .set_audio_packet = dce4_set_audio_packet,
 198         .set_mute = dce4_set_mute,
 199         .mode_set = radeon_audio_hdmi_mode_set,
 200         .dpms = evergreen_hdmi_enable,
 201 };
 202
 203 static struct radeon_audio_funcs dce4_dp_funcs = {
 204         .get_pin = r600_audio_get_pin,
 205         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 206         .write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,
 207         .write_latency_fields = dce4_afmt_write_latency_fields,
 208         .set_dto = dce4_dp_audio_set_dto,
 209         .set_avi_packet = evergreen_set_avi_packet,
 210         .set_audio_packet = dce4_set_audio_packet,
 211         .mode_set = radeon_audio_dp_mode_set,
 212         .dpms = evergreen_dp_enable,
 213 };
 214
 215 static struct radeon_audio_funcs dce6_hdmi_funcs = {
 216         .select_pin = dce6_afmt_select_pin,
 217         .get_pin = dce6_audio_get_pin,
 218         .write_sad_regs = dce6_afmt_write_sad_regs,
 219         .write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,
 220         .write_latency_fields = dce6_afmt_write_latency_fields,
 221         .set_dto = dce6_hdmi_audio_set_dto,
 222         .update_acr = evergreen_hdmi_update_acr,
 223         .set_vbi_packet = dce4_set_vbi_packet,
 224         .set_color_depth = dce4_hdmi_set_color_depth,
 225         .set_avi_packet = evergreen_set_avi_packet,
 226         .set_audio_packet = dce4_set_audio_packet,
 227         .set_mute = dce4_set_mute,
 228         .mode_set = radeon_audio_hdmi_mode_set,
 229         .dpms = evergreen_hdmi_enable,
 230 };
 231
 232 static struct radeon_audio_funcs dce6_dp_funcs = {
 233         .select_pin = dce6_afmt_select_pin,
 234         .get_pin = dce6_audio_get_pin,
 235         .write_sad_regs = dce6_afmt_write_sad_regs,
 236         .write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,
 237         .write_latency_fields = dce6_afmt_write_latency_fields,
 238         .set_dto = dce6_dp_audio_set_dto,
 239         .set_avi_packet = evergreen_set_avi_packet,
 240         .set_audio_packet = dce4_set_audio_packet,
 241         .mode_set = radeon_audio_dp_mode_set,
 242         .dpms = evergreen_dp_enable,
 243 };
 244
 245 static void radeon_audio_enable(struct radeon_device *rdev,
 246                                 struct r600_audio_pin *pin, u8 enable_mask)
 247 {
 248         struct drm_encoder *encoder;
 249         struct radeon_encoder *radeon_encoder;
 250         struct radeon_encoder_atom_dig *dig;
 251         int pin_count = 0;
 252
 253         if (!pin)
 254                 return;
 255
 256         if (rdev->mode_info.mode_config_initialized) {
 257                 list_for_each_entry(encoder, &rdev->ddev->mode_config.encoder_list, head) {
 258                         if (radeon_encoder_is_digital(encoder)) {
 259                                 radeon_encoder = to_radeon_encoder(encoder);
 260                                 dig = radeon_encoder->enc_priv;
 261                                 if (dig->pin == pin)
 262                                         pin_count++;
 263                         }
 264                 }
 265
 266                 if ((pin_count > 1) && (enable_mask == 0))
 267                         return;
 268         }
 269
 270         if (rdev->audio.funcs->enable)
 271                 rdev->audio.funcs->enable(rdev, pin, enable_mask);
 272 }
 273
 274 static void radeon_audio_interface_init(struct radeon_device *rdev)
 275 {
 276         if (ASIC_IS_DCE6(rdev)) {
 277                 rdev->audio.funcs = &dce6_funcs;
 278                 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
 279                 rdev->audio.dp_funcs = &dce6_dp_funcs;
 280         } else if (ASIC_IS_DCE4(rdev)) {
 281                 rdev->audio.funcs = &dce4_funcs;
 282                 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
 283                 rdev->audio.dp_funcs = &dce4_dp_funcs;
 284         } else if (ASIC_IS_DCE32(rdev)) {
 285                 rdev->audio.funcs = &dce32_funcs;
 286                 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
 287                 rdev->audio.dp_funcs = &dce32_dp_funcs;
 288         } else {
 289                 rdev->audio.funcs = &r600_funcs;
 290                 rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
 291                 rdev->audio.dp_funcs = 0;
 292         }
 293 }
 294
 295 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
 296 {
 297         return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
 298 }
 299
 300 int radeon_audio_init(struct radeon_device *rdev)
 301 {
 302         int i;
 303
 304         if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
 305                 return 0;
 306
 307         rdev->audio.enabled = true;
 308
 309         if (ASIC_IS_DCE83(rdev))                /* KB: 2 streams, 3 endpoints */
 310                 rdev->audio.num_pins = 3;
 311         else if (ASIC_IS_DCE81(rdev))   /* KV: 4 streams, 7 endpoints */
 312                 rdev->audio.num_pins = 7;
 313         else if (ASIC_IS_DCE8(rdev))    /* BN/HW: 6 streams, 7 endpoints */
 314                 rdev->audio.num_pins = 7;
 315         else if (ASIC_IS_DCE64(rdev))   /* OL: 2 streams, 2 endpoints */
 316                 rdev->audio.num_pins = 2;
 317         else if (ASIC_IS_DCE61(rdev))   /* TN: 4 streams, 6 endpoints */
 318                 rdev->audio.num_pins = 6;
 319         else if (ASIC_IS_DCE6(rdev))    /* SI: 6 streams, 6 endpoints */
 320                 rdev->audio.num_pins = 6;
 321         else
 322                 rdev->audio.num_pins = 1;
 323
 324         for (i = 0; i < rdev->audio.num_pins; i++) {
 325                 rdev->audio.pin[i].channels = -1;
 326                 rdev->audio.pin[i].rate = -1;
 327                 rdev->audio.pin[i].bits_per_sample = -1;
 328                 rdev->audio.pin[i].status_bits = 0;
 329                 rdev->audio.pin[i].category_code = 0;
 330                 rdev->audio.pin[i].connected = false;
 331                 rdev->audio.pin[i].offset = pin_offsets[i];
 332                 rdev->audio.pin[i].id = i;
 333         }
 334
 335         radeon_audio_interface_init(rdev);
 336
 337         /* disable audio.  it will be set up later */
 338         for (i = 0; i < rdev->audio.num_pins; i++)
 339                 radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
 340
 341         return 0;
 342 }
 343
 344 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 345 {
 346         if (rdev->audio.funcs->endpoint_rreg)
 347                 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
 348
 349         return 0;
 350 }
 351
 352 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
 353         u32 reg, u32 v)
 354 {
 355         if (rdev->audio.funcs->endpoint_wreg)
 356                 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
 357 }
 358
 359 static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
 360 {
 361         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 362         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 363         struct cea_sad *sads;
 364         int sad_count;
 365
 366         if (!connector)
 367                 return;
 368
 369         sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 370         if (sad_count <= 0) {
 371                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 372                 return;
 373         }
 374         BUG_ON(!sads);
 375
 376         if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
 377                 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
 378
 379         kfree(sads);
 380 }
 381
 382 static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
 383 {
 384         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 385         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 386         u8 *sadb = NULL;
 387         int sad_count;
 388
 389         if (!connector)
 390                 return;
 391
 392         sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector),
 393                                                    &sadb);
 394         if (sad_count < 0) {
 395                 DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
 396                           sad_count);
 397                 sad_count = 0;
 398         }
 399
 400         if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
 401                 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
 402
 403         kfree(sadb);
 404 }
 405
 406 static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
 407                                               struct drm_display_mode *mode)
 408 {
 409         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 410         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 411
 412         if (!connector)
 413                 return;
 414
 415         if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
 416                 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
 417 }
 418
 419 struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)
 420 {
 421         struct radeon_device *rdev = encoder->dev->dev_private;
 422         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 423
 424         if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
 425                 return radeon_encoder->audio->get_pin(rdev);
 426
 427         return NULL;
 428 }
 429
 430 static void radeon_audio_select_pin(struct drm_encoder *encoder)
 431 {
 432         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 433
 434         if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
 435                 radeon_encoder->audio->select_pin(encoder);
 436 }
 437
 438 void radeon_audio_detect(struct drm_connector *connector,
 439                          struct drm_encoder *encoder,
 440                          enum drm_connector_status status)
 441 {
 442         struct drm_device *dev = connector->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;
 446
 447         if (!radeon_audio_chipset_supported(rdev))
 448                 return;
 449
 450         if (!radeon_encoder_is_digital(encoder))
 451                 return;
 452
 453         dig = radeon_encoder->enc_priv;
 454
 455         if (status == connector_status_connected) {
 456                 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
 457                         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 458
 459                         if (radeon_dp_getsinktype(radeon_connector) ==
 460                             CONNECTOR_OBJECT_ID_DISPLAYPORT)
 461                                 radeon_encoder->audio = rdev->audio.dp_funcs;
 462                         else
 463                                 radeon_encoder->audio = rdev->audio.hdmi_funcs;
 464                 } else {
 465                         radeon_encoder->audio = rdev->audio.hdmi_funcs;
 466                 }
 467
 468                 if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 469                         if (!dig->pin)
 470                                 dig->pin = radeon_audio_get_pin(encoder);
 471                         radeon_audio_enable(rdev, dig->pin, 0xf);
 472                 } else {
 473                         radeon_audio_enable(rdev, dig->pin, 0);
 474                         dig->pin = NULL;
 475                 }
 476         } else {
 477                 radeon_audio_enable(rdev, dig->pin, 0);
 478                 dig->pin = NULL;
 479         }
 480 }
 481
 482 void radeon_audio_fini(struct radeon_device *rdev)
 483 {
 484         int i;
 485
 486         if (!rdev->audio.enabled)
 487                 return;
 488
 489         for (i = 0; i < rdev->audio.num_pins; i++)
 490                 radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
 491
 492         rdev->audio.enabled = false;
 493 }
 494
 495 static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)
 496 {
 497         struct radeon_device *rdev = encoder->dev->dev_private;
 498         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 499         struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);
 500
 501         if (radeon_encoder->audio && radeon_encoder->audio->set_dto)
 502                 radeon_encoder->audio->set_dto(rdev, crtc, clock);
 503 }
 504
 505 static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
 506                                        struct drm_display_mode *mode)
 507 {
 508         struct radeon_device *rdev = encoder->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 drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 512         u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
 513         struct hdmi_avi_infoframe frame;
 514         int err;
 515
 516         if (!connector)
 517                 return -EINVAL;
 518
 519         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode);
 520         if (err < 0) {
 521                 DRM_ERROR("failed to setup AVI infoframe: %d\n", err);
 522                 return err;
 523         }
 524
 525         if (radeon_encoder->output_csc != RADEON_OUTPUT_CSC_BYPASS) {
 526                 drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode,
 527                                                    radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB ?
 528                                                    HDMI_QUANTIZATION_RANGE_LIMITED :
 529                                                    HDMI_QUANTIZATION_RANGE_FULL);
 530         }
 531
 532         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
 533         if (err < 0) {
 534                 DRM_ERROR("failed to pack AVI infoframe: %d\n", err);
 535                 return err;
 536         }
 537
 538         if (dig && dig->afmt && radeon_encoder->audio &&
 539             radeon_encoder->audio->set_avi_packet)
 540                 radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,
 541                         buffer, sizeof(buffer));
 542
 543         return 0;
 544 }
 545
 546 /*
 547  * calculate CTS and N values if they are not found in the table
 548  */
 549 static void radeon_audio_calc_cts(unsigned int clock, int *CTS, int *N, int freq)
 550 {
 551         int n, cts;
 552         unsigned long div, mul;
 553
 554         /* Safe, but overly large values */
 555         n = 128 * freq;
 556         cts = clock * 1000;
 557
 558         /* Smallest valid fraction */
 559         div = gcd(n, cts);
 560
 561         n /= div;
 562         cts /= div;
 563
 564         /*
 565          * The optimal N is 128*freq/1000. Calculate the closest larger
 566          * value that doesn't truncate any bits.
 567          */
 568         mul = ((128*freq/1000) + (n-1))/n;
 569
 570         n *= mul;
 571         cts *= mul;
 572
 573         /* Check that we are in spec (not always possible) */
 574         if (n < (128*freq/1500))
 575                 pr_warn("Calculated ACR N value is too small. You may experience audio problems.\n");
 576         if (n > (128*freq/300))
 577                 pr_warn("Calculated ACR N value is too large. You may experience audio problems.\n");
 578
 579         *N = n;
 580         *CTS = cts;
 581
 582         DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
 583                 *N, *CTS, freq);
 584 }
 585
 586 static const struct radeon_hdmi_acr* radeon_audio_acr(unsigned int clock)
 587 {
 588         static struct radeon_hdmi_acr res;
 589         u8 i;
 590
 591         static const struct radeon_hdmi_acr hdmi_predefined_acr[] = {
 592                 /*       32kHz    44.1kHz   48kHz    */
 593                 /* Clock      N     CTS      N     CTS      N     CTS */
 594                 {  25175,  4096,  25175, 28224, 125875,  6144,  25175 }, /*  25,20/1.001 MHz */
 595                 {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */
 596                 {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */
 597                 {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */
 598                 {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */
 599                 {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */
 600                 {  74176,  4096,  74176,  5733,  75335,  6144,  74176 }, /*  74.25/1.001 MHz */
 601                 {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */
 602                 { 148352,  4096, 148352,  5733, 150670,  6144, 148352 }, /* 148.50/1.001 MHz */
 603                 { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */
 604         };
 605
 606         /* Precalculated values for common clocks */
 607         for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)
 608                 if (hdmi_predefined_acr[i].clock == clock)
 609                         return &hdmi_predefined_acr[i];
 610
 611         /* And odd clocks get manually calculated */
 612         radeon_audio_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
 613         radeon_audio_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
 614         radeon_audio_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
 615
 616         return &res;
 617 }
 618
 619 /*
 620  * update the N and CTS parameters for a given pixel clock rate
 621  */
 622 static void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)
 623 {
 624         const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);
 625         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 626         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 627
 628         if (!dig || !dig->afmt)
 629                 return;
 630
 631         if (radeon_encoder->audio && radeon_encoder->audio->update_acr)
 632                 radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);
 633 }
 634
 635 static void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)
 636 {
 637         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 638         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 639
 640         if (!dig || !dig->afmt)
 641                 return;
 642
 643         if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)
 644                 radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);
 645 }
 646
 647 static void radeon_hdmi_set_color_depth(struct drm_encoder *encoder)
 648 {
 649         int bpc = 8;
 650         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 651         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 652
 653         if (!dig || !dig->afmt)
 654                 return;
 655
 656         if (encoder->crtc) {
 657                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
 658                 bpc = radeon_crtc->bpc;
 659         }
 660
 661         if (radeon_encoder->audio && radeon_encoder->audio->set_color_depth)
 662                 radeon_encoder->audio->set_color_depth(encoder, dig->afmt->offset, bpc);
 663 }
 664
 665 static void radeon_audio_set_audio_packet(struct drm_encoder *encoder)
 666 {
 667         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 668         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 669
 670         if (!dig || !dig->afmt)
 671                 return;
 672
 673         if (radeon_encoder->audio && radeon_encoder->audio->set_audio_packet)
 674                 radeon_encoder->audio->set_audio_packet(encoder, dig->afmt->offset);
 675 }
 676
 677 static void radeon_audio_set_mute(struct drm_encoder *encoder, bool mute)
 678 {
 679         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 680         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 681
 682         if (!dig || !dig->afmt)
 683                 return;
 684
 685         if (radeon_encoder->audio && radeon_encoder->audio->set_mute)
 686                 radeon_encoder->audio->set_mute(encoder, dig->afmt->offset, mute);
 687 }
 688
 689 /*
 690  * update the info frames with the data from the current display mode
 691  */
 692 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
 693                                        struct drm_display_mode *mode)
 694 {
 695         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 696         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 697         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 698
 699         if (!dig || !dig->afmt)
 700                 return;
 701
 702         if (!connector)
 703                 return;
 704
 705         if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 706                 radeon_audio_set_mute(encoder, true);
 707
 708                 radeon_audio_write_speaker_allocation(encoder);
 709                 radeon_audio_write_sad_regs(encoder);
 710                 radeon_audio_write_latency_fields(encoder, mode);
 711                 radeon_audio_set_dto(encoder, mode->clock);
 712                 radeon_audio_set_vbi_packet(encoder);
 713                 radeon_hdmi_set_color_depth(encoder);
 714                 radeon_audio_update_acr(encoder, mode->clock);
 715                 radeon_audio_set_audio_packet(encoder);
 716                 radeon_audio_select_pin(encoder);
 717
 718                 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 719                         return;
 720
 721                 radeon_audio_set_mute(encoder, false);
 722         } else {
 723                 radeon_hdmi_set_color_depth(encoder);
 724
 725                 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 726                         return;
 727         }
 728 }
 729
 730 static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
 731                                      struct drm_display_mode *mode)
 732 {
 733         struct drm_device *dev = encoder->dev;
 734         struct radeon_device *rdev = dev->dev_private;
 735         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 736         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 737         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 738
 739         if (!dig || !dig->afmt)
 740                 return;
 741
 742         if (!connector)
 743                 return;
 744
 745         if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 746                 radeon_audio_write_speaker_allocation(encoder);
 747                 radeon_audio_write_sad_regs(encoder);
 748                 radeon_audio_write_latency_fields(encoder, mode);
 749                 radeon_audio_set_dto(encoder, rdev->clock.vco_freq * 10);
 750                 radeon_audio_set_audio_packet(encoder);
 751                 radeon_audio_select_pin(encoder);
 752
 753                 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 754                         return;
 755         }
 756 }
 757
 758 void radeon_audio_mode_set(struct drm_encoder *encoder,
 759                            struct drm_display_mode *mode)
 760 {
 761         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 762
 763         if (radeon_encoder->audio && radeon_encoder->audio->mode_set)
 764                 radeon_encoder->audio->mode_set(encoder, mode);
 765 }
 766
 767 void radeon_audio_dpms(struct drm_encoder *encoder, int mode)
 768 {
 769         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 770
 771         if (radeon_encoder->audio && radeon_encoder->audio->dpms)
 772                 radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);
 773 }
 774
 775 unsigned int radeon_audio_decode_dfs_div(unsigned int div)
 776 {
 777         if (div >= 8 && div < 64)
 778                 return (div - 8) * 25 + 200;
 779         else if (div >= 64 && div < 96)
 780                 return (div - 64) * 50 + 1600;
 781         else if (div >= 96 && div < 128)
 782                 return (div - 96) * 100 + 3200;
 783         else
 784                 return 0;
 785 }