kernel/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_interface_init(struct radeon_device *rdev)
 246 {
 247         if (ASIC_IS_DCE6(rdev)) {
 248                 rdev->audio.funcs = &dce6_funcs;
 249                 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
 250                 rdev->audio.dp_funcs = &dce6_dp_funcs;
 251         } else if (ASIC_IS_DCE4(rdev)) {
 252                 rdev->audio.funcs = &dce4_funcs;
 253                 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
 254                 rdev->audio.dp_funcs = &dce4_dp_funcs;
 255         } else if (ASIC_IS_DCE32(rdev)) {
 256                 rdev->audio.funcs = &dce32_funcs;
 257                 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
 258                 rdev->audio.dp_funcs = &dce32_dp_funcs;
 259         } else {
 260                 rdev->audio.funcs = &r600_funcs;
 261                 rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
 262                 rdev->audio.dp_funcs = 0;
 263         }
 264 }
 265
 266 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
 267 {
 268         return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
 269 }
 270
 271 int radeon_audio_init(struct radeon_device *rdev)
 272 {
 273         int i;
 274
 275         if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
 276                 return 0;
 277
 278         rdev->audio.enabled = true;
 279
 280         if (ASIC_IS_DCE83(rdev))                /* KB: 2 streams, 3 endpoints */
 281                 rdev->audio.num_pins = 3;
 282         else if (ASIC_IS_DCE81(rdev))   /* KV: 4 streams, 7 endpoints */
 283                 rdev->audio.num_pins = 7;
 284         else if (ASIC_IS_DCE8(rdev))    /* BN/HW: 6 streams, 7 endpoints */
 285                 rdev->audio.num_pins = 7;
 286         else if (ASIC_IS_DCE64(rdev))   /* OL: 2 streams, 2 endpoints */
 287                 rdev->audio.num_pins = 2;
 288         else if (ASIC_IS_DCE61(rdev))   /* TN: 4 streams, 6 endpoints */
 289                 rdev->audio.num_pins = 6;
 290         else if (ASIC_IS_DCE6(rdev))    /* SI: 6 streams, 6 endpoints */
 291                 rdev->audio.num_pins = 6;
 292         else
 293                 rdev->audio.num_pins = 1;
 294
 295         for (i = 0; i < rdev->audio.num_pins; i++) {
 296                 rdev->audio.pin[i].channels = -1;
 297                 rdev->audio.pin[i].rate = -1;
 298                 rdev->audio.pin[i].bits_per_sample = -1;
 299                 rdev->audio.pin[i].status_bits = 0;
 300                 rdev->audio.pin[i].category_code = 0;
 301                 rdev->audio.pin[i].connected = false;
 302                 rdev->audio.pin[i].offset = pin_offsets[i];
 303                 rdev->audio.pin[i].id = i;
 304         }
 305
 306         radeon_audio_interface_init(rdev);
 307
 308         /* disable audio.  it will be set up later */
 309         for (i = 0; i < rdev->audio.num_pins; i++)
 310                 radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
 311
 312         return 0;
 313 }
 314
 315 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 316 {
 317         if (rdev->audio.funcs->endpoint_rreg)
 318                 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
 319
 320         return 0;
 321 }
 322
 323 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
 324         u32 reg, u32 v)
 325 {
 326         if (rdev->audio.funcs->endpoint_wreg)
 327                 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
 328 }
 329
 330 static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
 331 {
 332         struct radeon_encoder *radeon_encoder;
 333         struct drm_connector *connector;
 334         struct radeon_connector *radeon_connector = NULL;
 335         struct cea_sad *sads;
 336         int sad_count;
 337
 338         list_for_each_entry(connector,
 339                 &encoder->dev->mode_config.connector_list, head) {
 340                 if (connector->encoder == encoder) {
 341                         radeon_connector = to_radeon_connector(connector);
 342                         break;
 343                 }
 344         }
 345
 346         if (!radeon_connector) {
 347                 DRM_ERROR("Couldn't find encoder's connector\n");
 348                 return;
 349         }
 350
 351         sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 352         if (sad_count <= 0) {
 353                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 354                 return;
 355         }
 356         BUG_ON(!sads);
 357
 358         radeon_encoder = to_radeon_encoder(encoder);
 359
 360         if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
 361                 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
 362
 363         kfree(sads);
 364 }
 365
 366 static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
 367 {
 368         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 369         struct drm_connector *connector;
 370         struct radeon_connector *radeon_connector = NULL;
 371         u8 *sadb = NULL;
 372         int sad_count;
 373
 374         list_for_each_entry(connector,
 375                             &encoder->dev->mode_config.connector_list, head) {
 376                 if (connector->encoder == encoder) {
 377                         radeon_connector = to_radeon_connector(connector);
 378                         break;
 379                 }
 380         }
 381
 382         if (!radeon_connector) {
 383                 DRM_ERROR("Couldn't find encoder's connector\n");
 384                 return;
 385         }
 386
 387         sad_count = drm_edid_to_speaker_allocation(
 388                 radeon_connector_edid(connector), &sadb);
 389         if (sad_count < 0) {
 390                 DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
 391                           sad_count);
 392                 sad_count = 0;
 393         }
 394
 395         if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
 396                 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
 397
 398         kfree(sadb);
 399 }
 400
 401 static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
 402         struct drm_display_mode *mode)
 403 {
 404         struct radeon_encoder *radeon_encoder;
 405         struct drm_connector *connector;
 406         struct radeon_connector *radeon_connector = 0;
 407
 408         list_for_each_entry(connector,
 409                 &encoder->dev->mode_config.connector_list, head) {
 410                 if (connector->encoder == encoder) {
 411                         radeon_connector = to_radeon_connector(connector);
 412                         break;
 413                 }
 414         }
 415
 416         if (!radeon_connector) {
 417                 DRM_ERROR("Couldn't find encoder's connector\n");
 418                 return;
 419         }
 420
 421         radeon_encoder = to_radeon_encoder(encoder);
 422
 423         if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
 424                 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
 425 }
 426
 427 struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)
 428 {
 429         struct radeon_device *rdev = encoder->dev->dev_private;
 430         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 431
 432         if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
 433                 return radeon_encoder->audio->get_pin(rdev);
 434
 435         return NULL;
 436 }
 437
 438 static void radeon_audio_select_pin(struct drm_encoder *encoder)
 439 {
 440         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 441
 442         if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
 443                 radeon_encoder->audio->select_pin(encoder);
 444 }
 445
 446 void radeon_audio_enable(struct radeon_device *rdev,
 447         struct r600_audio_pin *pin, u8 enable_mask)
 448 {
 449         if (rdev->audio.funcs->enable)
 450                 rdev->audio.funcs->enable(rdev, pin, enable_mask);
 451 }
 452
 453 void radeon_audio_detect(struct drm_connector *connector,
 454                          enum drm_connector_status status)
 455 {
 456         struct radeon_device *rdev;
 457         struct radeon_encoder *radeon_encoder;
 458         struct radeon_encoder_atom_dig *dig;
 459
 460         if (!connector || !connector->encoder)
 461                 return;
 462
 463         rdev = connector->encoder->dev->dev_private;
 464
 465         if (!radeon_audio_chipset_supported(rdev))
 466                 return;
 467
 468         radeon_encoder = to_radeon_encoder(connector->encoder);
 469         dig = radeon_encoder->enc_priv;
 470
 471         if (status == connector_status_connected) {
 472                 struct radeon_connector *radeon_connector;
 473                 int sink_type;
 474
 475                 if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 476                         radeon_encoder->audio = NULL;
 477                         return;
 478                 }
 479
 480                 radeon_connector = to_radeon_connector(connector);
 481                 sink_type = radeon_dp_getsinktype(radeon_connector);
 482
 483                 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
 484                         sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
 485                         radeon_encoder->audio = rdev->audio.dp_funcs;
 486                 else
 487                         radeon_encoder->audio = rdev->audio.hdmi_funcs;
 488
 489                 dig->afmt->pin = radeon_audio_get_pin(connector->encoder);
 490                 radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
 491         } else {
 492                 radeon_audio_enable(rdev, dig->afmt->pin, 0);
 493                 dig->afmt->pin = NULL;
 494         }
 495 }
 496
 497 void radeon_audio_fini(struct radeon_device *rdev)
 498 {
 499         int i;
 500
 501         if (!rdev->audio.enabled)
 502                 return;
 503
 504         for (i = 0; i < rdev->audio.num_pins; i++)
 505                 radeon_audio_enable(rdev, &rdev->audio.pin[i], false);
 506
 507         rdev->audio.enabled = false;
 508 }
 509
 510 static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)
 511 {
 512         struct radeon_device *rdev = encoder->dev->dev_private;
 513         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 514         struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);
 515
 516         if (radeon_encoder->audio && radeon_encoder->audio->set_dto)
 517                 radeon_encoder->audio->set_dto(rdev, crtc, clock);
 518 }
 519
 520 static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
 521         struct drm_display_mode *mode)
 522 {
 523         struct radeon_device *rdev = encoder->dev->dev_private;
 524         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 525         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 526         struct drm_connector *connector;
 527         struct radeon_connector *radeon_connector = NULL;
 528         u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
 529         struct hdmi_avi_infoframe frame;
 530         int err;
 531
 532         list_for_each_entry(connector,
 533                 &encoder->dev->mode_config.connector_list, head) {
 534                 if (connector->encoder == encoder) {
 535                         radeon_connector = to_radeon_connector(connector);
 536                         break;
 537                 }
 538         }
 539
 540         if (!radeon_connector) {
 541                 DRM_ERROR("Couldn't find encoder's connector\n");
 542                 return -ENOENT;
 543         }
 544
 545         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
 546         if (err < 0) {
 547                 DRM_ERROR("failed to setup AVI infoframe: %d\n", err);
 548                 return err;
 549         }
 550
 551         if (drm_rgb_quant_range_selectable(radeon_connector_edid(connector))) {
 552                 if (radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB)
 553                         frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
 554                 else
 555                         frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
 556         } else {
 557                 frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
 558         }
 559
 560         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
 561         if (err < 0) {
 562                 DRM_ERROR("failed to pack AVI infoframe: %d\n", err);
 563                 return err;
 564         }
 565
 566         if (dig && dig->afmt &&
 567                 radeon_encoder->audio && radeon_encoder->audio->set_avi_packet)
 568                 radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,
 569                         buffer, sizeof(buffer));
 570
 571         return 0;
 572 }
 573
 574 /*
 575  * calculate CTS and N values if they are not found in the table
 576  */
 577 static void radeon_audio_calc_cts(unsigned int clock, int *CTS, int *N, int freq)
 578 {
 579         int n, cts;
 580         unsigned long div, mul;
 581
 582         /* Safe, but overly large values */
 583         n = 128 * freq;
 584         cts = clock * 1000;
 585
 586         /* Smallest valid fraction */
 587         div = gcd(n, cts);
 588
 589         n /= div;
 590         cts /= div;
 591
 592         /*
 593          * The optimal N is 128*freq/1000. Calculate the closest larger
 594          * value that doesn't truncate any bits.
 595          */
 596         mul = ((128*freq/1000) + (n-1))/n;
 597
 598         n *= mul;
 599         cts *= mul;
 600
 601         /* Check that we are in spec (not always possible) */
 602         if (n < (128*freq/1500))
 603                 printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n");
 604         if (n > (128*freq/300))
 605                 printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n");
 606
 607         *N = n;
 608         *CTS = cts;
 609
 610         DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
 611                 *N, *CTS, freq);
 612 }
 613
 614 static const struct radeon_hdmi_acr* radeon_audio_acr(unsigned int clock)
 615 {
 616         static struct radeon_hdmi_acr res;
 617         u8 i;
 618
 619         static const struct radeon_hdmi_acr hdmi_predefined_acr[] = {
 620                 /*       32kHz    44.1kHz   48kHz    */
 621                 /* Clock      N     CTS      N     CTS      N     CTS */
 622                 {  25175,  4096,  25175, 28224, 125875,  6144,  25175 }, /*  25,20/1.001 MHz */
 623                 {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */
 624                 {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */
 625                 {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */
 626                 {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */
 627                 {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */
 628                 {  74176,  4096,  74176,  5733,  75335,  6144,  74176 }, /*  74.25/1.001 MHz */
 629                 {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */
 630                 { 148352,  4096, 148352,  5733, 150670,  6144, 148352 }, /* 148.50/1.001 MHz */
 631                 { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */
 632         };
 633
 634         /* Precalculated values for common clocks */
 635         for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)
 636                 if (hdmi_predefined_acr[i].clock == clock)
 637                         return &hdmi_predefined_acr[i];
 638
 639         /* And odd clocks get manually calculated */
 640         radeon_audio_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
 641         radeon_audio_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
 642         radeon_audio_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
 643
 644         return &res;
 645 }
 646
 647 /*
 648  * update the N and CTS parameters for a given pixel clock rate
 649  */
 650 static void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)
 651 {
 652         const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);
 653         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 654         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 655
 656         if (!dig || !dig->afmt)
 657                 return;
 658
 659         if (radeon_encoder->audio && radeon_encoder->audio->update_acr)
 660                 radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);
 661 }
 662
 663 static void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)
 664 {
 665         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 666         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 667
 668         if (!dig || !dig->afmt)
 669                 return;
 670
 671         if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)
 672                 radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);
 673 }
 674
 675 static void radeon_hdmi_set_color_depth(struct drm_encoder *encoder)
 676 {
 677         int bpc = 8;
 678         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 679         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 680
 681         if (!dig || !dig->afmt)
 682                 return;
 683
 684         if (encoder->crtc) {
 685                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
 686                 bpc = radeon_crtc->bpc;
 687         }
 688
 689         if (radeon_encoder->audio && radeon_encoder->audio->set_color_depth)
 690                 radeon_encoder->audio->set_color_depth(encoder, dig->afmt->offset, bpc);
 691 }
 692
 693 static void radeon_audio_set_audio_packet(struct drm_encoder *encoder)
 694 {
 695         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 696         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 697
 698         if (!dig || !dig->afmt)
 699                 return;
 700
 701         if (radeon_encoder->audio && radeon_encoder->audio->set_audio_packet)
 702                 radeon_encoder->audio->set_audio_packet(encoder, dig->afmt->offset);
 703 }
 704
 705 static void radeon_audio_set_mute(struct drm_encoder *encoder, bool mute)
 706 {
 707         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 708         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 709
 710         if (!dig || !dig->afmt)
 711                 return;
 712
 713         if (radeon_encoder->audio && radeon_encoder->audio->set_mute)
 714                 radeon_encoder->audio->set_mute(encoder, dig->afmt->offset, mute);
 715 }
 716
 717 /*
 718  * update the info frames with the data from the current display mode
 719  */
 720 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
 721                                        struct drm_display_mode *mode)
 722 {
 723         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 724         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 725
 726         if (!dig || !dig->afmt)
 727                 return;
 728
 729         radeon_audio_set_mute(encoder, true);
 730
 731         radeon_audio_write_speaker_allocation(encoder);
 732         radeon_audio_write_sad_regs(encoder);
 733         radeon_audio_write_latency_fields(encoder, mode);
 734         radeon_audio_set_dto(encoder, mode->clock);
 735         radeon_audio_set_vbi_packet(encoder);
 736         radeon_hdmi_set_color_depth(encoder);
 737         radeon_audio_update_acr(encoder, mode->clock);
 738         radeon_audio_set_audio_packet(encoder);
 739         radeon_audio_select_pin(encoder);
 740
 741         if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 742                 return;
 743
 744         radeon_audio_set_mute(encoder, false);
 745 }
 746
 747 static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
 748         struct drm_display_mode *mode)
 749 {
 750         struct drm_device *dev = encoder->dev;
 751         struct radeon_device *rdev = dev->dev_private;
 752         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 753         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 754         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 755         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 756         struct radeon_connector_atom_dig *dig_connector =
 757                 radeon_connector->con_priv;
 758
 759         if (!dig || !dig->afmt)
 760                 return;
 761
 762         radeon_audio_write_speaker_allocation(encoder);
 763         radeon_audio_write_sad_regs(encoder);
 764         radeon_audio_write_latency_fields(encoder, mode);
 765         if (rdev->clock.dp_extclk || ASIC_IS_DCE5(rdev))
 766                 radeon_audio_set_dto(encoder, rdev->clock.default_dispclk * 10);
 767         else
 768                 radeon_audio_set_dto(encoder, dig_connector->dp_clock);
 769         radeon_audio_set_audio_packet(encoder);
 770         radeon_audio_select_pin(encoder);
 771
 772         if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 773                 return;
 774 }
 775
 776 void radeon_audio_mode_set(struct drm_encoder *encoder,
 777         struct drm_display_mode *mode)
 778 {
 779         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 780
 781         if (radeon_encoder->audio && radeon_encoder->audio->mode_set)
 782                 radeon_encoder->audio->mode_set(encoder, mode);
 783 }
 784
 785 void radeon_audio_dpms(struct drm_encoder *encoder, int mode)
 786 {
 787         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 788
 789         if (radeon_encoder->audio && radeon_encoder->audio->dpms)
 790                 radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);
 791 }