1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * sst_mfld_platform.c - Intel MID Platform driver 4 * 5 * Copyright (C) 2010-2014 Intel Corp 6 * Author: Vinod Koul <vinod.koul@intel.com> 7 * Author: Harsha Priya <priya.harsha@intel.com> 8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 * 10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 */ 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 13 14 #include <linux/slab.h> 15 #include <linux/io.h> 16 #include <linux/module.h> 17 #include <sound/core.h> 18 #include <sound/pcm.h> 19 #include <sound/pcm_params.h> 20 #include <sound/soc.h> 21 #include <sound/compress_driver.h> 22 #include <asm/platform_sst_audio.h> 23 #include "sst-mfld-platform.h" 24 #include "sst-atom-controls.h" 25 26 struct sst_device *sst; 27 static DEFINE_MUTEX(sst_lock); 28 29 int sst_register_dsp(struct sst_device *dev) 30 { 31 if (WARN_ON(!dev)) 32 return -EINVAL; 33 if (!try_module_get(dev->dev->driver->owner)) 34 return -ENODEV; 35 mutex_lock(&sst_lock); 36 if (sst) { 37 dev_err(dev->dev, "we already have a device %s\n", sst->name); 38 module_put(dev->dev->driver->owner); 39 mutex_unlock(&sst_lock); 40 return -EEXIST; 41 } 42 dev_dbg(dev->dev, "registering device %s\n", dev->name); 43 sst = dev; 44 mutex_unlock(&sst_lock); 45 return 0; 46 } 47 EXPORT_SYMBOL_GPL(sst_register_dsp); 48 49 int sst_unregister_dsp(struct sst_device *dev) 50 { 51 if (WARN_ON(!dev)) 52 return -EINVAL; 53 if (dev != sst) 54 return -EINVAL; 55 56 mutex_lock(&sst_lock); 57 58 if (!sst) { 59 mutex_unlock(&sst_lock); 60 return -EIO; 61 } 62 63 module_put(sst->dev->driver->owner); 64 dev_dbg(dev->dev, "unreg %s\n", sst->name); 65 sst = NULL; 66 mutex_unlock(&sst_lock); 67 return 0; 68 } 69 EXPORT_SYMBOL_GPL(sst_unregister_dsp); 70 71 static const struct snd_pcm_hardware sst_platform_pcm_hw = { 72 .info = (SNDRV_PCM_INFO_INTERLEAVED | 73 SNDRV_PCM_INFO_DOUBLE | 74 SNDRV_PCM_INFO_PAUSE | 75 SNDRV_PCM_INFO_RESUME | 76 SNDRV_PCM_INFO_MMAP| 77 SNDRV_PCM_INFO_MMAP_VALID | 78 SNDRV_PCM_INFO_BLOCK_TRANSFER | 79 SNDRV_PCM_INFO_SYNC_START), 80 .buffer_bytes_max = SST_MAX_BUFFER, 81 .period_bytes_min = SST_MIN_PERIOD_BYTES, 82 .period_bytes_max = SST_MAX_PERIOD_BYTES, 83 .periods_min = SST_MIN_PERIODS, 84 .periods_max = SST_MAX_PERIODS, 85 .fifo_size = SST_FIFO_SIZE, 86 }; 87 88 static struct sst_dev_stream_map dpcm_strm_map[] = { 89 {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, /* Reserved, not in use */ 90 {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA1_IN, SST_TASK_ID_MEDIA, 0}, 91 {MERR_DPCM_COMPR, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA0_IN, SST_TASK_ID_MEDIA, 0}, 92 {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_CAPTURE, PIPE_PCM1_OUT, SST_TASK_ID_MEDIA, 0}, 93 {MERR_DPCM_DEEP_BUFFER, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA3_IN, SST_TASK_ID_MEDIA, 0}, 94 }; 95 96 static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream) 97 { 98 99 return sst_send_pipe_gains(dai, stream, mute); 100 } 101 102 /* helper functions */ 103 void sst_set_stream_status(struct sst_runtime_stream *stream, 104 int state) 105 { 106 unsigned long flags; 107 spin_lock_irqsave(&stream->status_lock, flags); 108 stream->stream_status = state; 109 spin_unlock_irqrestore(&stream->status_lock, flags); 110 } 111 112 static inline int sst_get_stream_status(struct sst_runtime_stream *stream) 113 { 114 int state; 115 unsigned long flags; 116 117 spin_lock_irqsave(&stream->status_lock, flags); 118 state = stream->stream_status; 119 spin_unlock_irqrestore(&stream->status_lock, flags); 120 return state; 121 } 122 123 static void sst_fill_alloc_params(struct snd_pcm_substream *substream, 124 struct snd_sst_alloc_params_ext *alloc_param) 125 { 126 unsigned int channels; 127 snd_pcm_uframes_t period_size; 128 ssize_t periodbytes; 129 ssize_t buffer_bytes = snd_pcm_lib_buffer_bytes(substream); 130 u32 buffer_addr = virt_to_phys(substream->dma_buffer.area); 131 132 channels = substream->runtime->channels; 133 period_size = substream->runtime->period_size; 134 periodbytes = samples_to_bytes(substream->runtime, period_size); 135 alloc_param->ring_buf_info[0].addr = buffer_addr; 136 alloc_param->ring_buf_info[0].size = buffer_bytes; 137 alloc_param->sg_count = 1; 138 alloc_param->reserved = 0; 139 alloc_param->frag_size = periodbytes * channels; 140 141 } 142 static void sst_fill_pcm_params(struct snd_pcm_substream *substream, 143 struct snd_sst_stream_params *param) 144 { 145 param->uc.pcm_params.num_chan = (u8) substream->runtime->channels; 146 param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits; 147 param->uc.pcm_params.sfreq = substream->runtime->rate; 148 149 /* PCM stream via ALSA interface */ 150 param->uc.pcm_params.use_offload_path = 0; 151 param->uc.pcm_params.reserved2 = 0; 152 memset(param->uc.pcm_params.channel_map, 0, sizeof(u8)); 153 154 } 155 156 static int sst_get_stream_mapping(int dev, int sdev, int dir, 157 struct sst_dev_stream_map *map, int size) 158 { 159 int i; 160 161 if (map == NULL) 162 return -EINVAL; 163 164 165 /* index 0 is not used in stream map */ 166 for (i = 1; i < size; i++) { 167 if ((map[i].dev_num == dev) && (map[i].direction == dir)) 168 return i; 169 } 170 return 0; 171 } 172 173 int sst_fill_stream_params(void *substream, 174 const struct sst_data *ctx, struct snd_sst_params *str_params, bool is_compress) 175 { 176 int map_size; 177 int index; 178 struct sst_dev_stream_map *map; 179 struct snd_pcm_substream *pstream = NULL; 180 struct snd_compr_stream *cstream = NULL; 181 182 map = ctx->pdata->pdev_strm_map; 183 map_size = ctx->pdata->strm_map_size; 184 185 if (is_compress) 186 cstream = (struct snd_compr_stream *)substream; 187 else 188 pstream = (struct snd_pcm_substream *)substream; 189 190 str_params->stream_type = SST_STREAM_TYPE_MUSIC; 191 192 /* For pcm streams */ 193 if (pstream) { 194 index = sst_get_stream_mapping(pstream->pcm->device, 195 pstream->number, pstream->stream, 196 map, map_size); 197 if (index <= 0) 198 return -EINVAL; 199 200 str_params->stream_id = index; 201 str_params->device_type = map[index].device_id; 202 str_params->task = map[index].task_id; 203 204 str_params->ops = (u8)pstream->stream; 205 } 206 207 if (cstream) { 208 index = sst_get_stream_mapping(cstream->device->device, 209 0, cstream->direction, 210 map, map_size); 211 if (index <= 0) 212 return -EINVAL; 213 str_params->stream_id = index; 214 str_params->device_type = map[index].device_id; 215 str_params->task = map[index].task_id; 216 217 str_params->ops = (u8)cstream->direction; 218 } 219 return 0; 220 } 221 222 static int sst_platform_alloc_stream(struct snd_pcm_substream *substream, 223 struct snd_soc_dai *dai) 224 { 225 struct sst_runtime_stream *stream = 226 substream->runtime->private_data; 227 struct snd_sst_stream_params param = {{{0,},},}; 228 struct snd_sst_params str_params = {0}; 229 struct snd_sst_alloc_params_ext alloc_params = {0}; 230 int ret_val = 0; 231 struct sst_data *ctx = snd_soc_dai_get_drvdata(dai); 232 233 /* set codec params and inform SST driver the same */ 234 sst_fill_pcm_params(substream, ¶m); 235 sst_fill_alloc_params(substream, &alloc_params); 236 substream->runtime->dma_area = substream->dma_buffer.area; 237 str_params.sparams = param; 238 str_params.aparams = alloc_params; 239 str_params.codec = SST_CODEC_TYPE_PCM; 240 241 /* fill the device type and stream id to pass to SST driver */ 242 ret_val = sst_fill_stream_params(substream, ctx, &str_params, false); 243 if (ret_val < 0) 244 return ret_val; 245 246 stream->stream_info.str_id = str_params.stream_id; 247 248 ret_val = stream->ops->open(sst->dev, &str_params); 249 if (ret_val <= 0) 250 return ret_val; 251 252 253 return ret_val; 254 } 255 256 static void sst_period_elapsed(void *arg) 257 { 258 struct snd_pcm_substream *substream = arg; 259 struct sst_runtime_stream *stream; 260 int status; 261 262 if (!substream || !substream->runtime) 263 return; 264 stream = substream->runtime->private_data; 265 if (!stream) 266 return; 267 status = sst_get_stream_status(stream); 268 if (status != SST_PLATFORM_RUNNING) 269 return; 270 snd_pcm_period_elapsed(substream); 271 } 272 273 static int sst_platform_init_stream(struct snd_pcm_substream *substream) 274 { 275 struct sst_runtime_stream *stream = 276 substream->runtime->private_data; 277 struct snd_soc_pcm_runtime *rtd = substream->private_data; 278 int ret_val; 279 280 dev_dbg(rtd->dev, "setting buffer ptr param\n"); 281 sst_set_stream_status(stream, SST_PLATFORM_INIT); 282 stream->stream_info.period_elapsed = sst_period_elapsed; 283 stream->stream_info.arg = substream; 284 stream->stream_info.buffer_ptr = 0; 285 stream->stream_info.sfreq = substream->runtime->rate; 286 ret_val = stream->ops->stream_init(sst->dev, &stream->stream_info); 287 if (ret_val) 288 dev_err(rtd->dev, "control_set ret error %d\n", ret_val); 289 return ret_val; 290 291 } 292 293 static int power_up_sst(struct sst_runtime_stream *stream) 294 { 295 return stream->ops->power(sst->dev, true); 296 } 297 298 static void power_down_sst(struct sst_runtime_stream *stream) 299 { 300 stream->ops->power(sst->dev, false); 301 } 302 303 static int sst_media_open(struct snd_pcm_substream *substream, 304 struct snd_soc_dai *dai) 305 { 306 int ret_val = 0; 307 struct snd_pcm_runtime *runtime = substream->runtime; 308 struct sst_runtime_stream *stream; 309 310 stream = kzalloc(sizeof(*stream), GFP_KERNEL); 311 if (!stream) 312 return -ENOMEM; 313 spin_lock_init(&stream->status_lock); 314 315 /* get the sst ops */ 316 mutex_lock(&sst_lock); 317 if (!sst || 318 !try_module_get(sst->dev->driver->owner)) { 319 dev_err(dai->dev, "no device available to run\n"); 320 ret_val = -ENODEV; 321 goto out_ops; 322 } 323 stream->ops = sst->ops; 324 mutex_unlock(&sst_lock); 325 326 stream->stream_info.str_id = 0; 327 328 stream->stream_info.arg = substream; 329 /* allocate memory for SST API set */ 330 runtime->private_data = stream; 331 332 ret_val = power_up_sst(stream); 333 if (ret_val < 0) 334 return ret_val; 335 336 /* Make sure, that the period size is always even */ 337 snd_pcm_hw_constraint_step(substream->runtime, 0, 338 SNDRV_PCM_HW_PARAM_PERIODS, 2); 339 340 return snd_pcm_hw_constraint_integer(runtime, 341 SNDRV_PCM_HW_PARAM_PERIODS); 342 out_ops: 343 kfree(stream); 344 mutex_unlock(&sst_lock); 345 return ret_val; 346 } 347 348 static void sst_media_close(struct snd_pcm_substream *substream, 349 struct snd_soc_dai *dai) 350 { 351 struct sst_runtime_stream *stream; 352 int str_id; 353 354 stream = substream->runtime->private_data; 355 power_down_sst(stream); 356 357 str_id = stream->stream_info.str_id; 358 if (str_id) 359 stream->ops->close(sst->dev, str_id); 360 module_put(sst->dev->driver->owner); 361 kfree(stream); 362 } 363 364 static int sst_media_prepare(struct snd_pcm_substream *substream, 365 struct snd_soc_dai *dai) 366 { 367 struct sst_runtime_stream *stream; 368 int ret_val = 0, str_id; 369 370 stream = substream->runtime->private_data; 371 str_id = stream->stream_info.str_id; 372 if (stream->stream_info.str_id) { 373 ret_val = stream->ops->stream_drop(sst->dev, str_id); 374 return ret_val; 375 } 376 377 ret_val = sst_platform_alloc_stream(substream, dai); 378 if (ret_val <= 0) 379 return ret_val; 380 snprintf(substream->pcm->id, sizeof(substream->pcm->id), 381 "%d", stream->stream_info.str_id); 382 383 ret_val = sst_platform_init_stream(substream); 384 if (ret_val) 385 return ret_val; 386 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER; 387 return ret_val; 388 } 389 390 static int sst_enable_ssp(struct snd_pcm_substream *substream, 391 struct snd_soc_dai *dai) 392 { 393 int ret = 0; 394 395 if (!dai->active) { 396 ret = sst_handle_vb_timer(dai, true); 397 sst_fill_ssp_defaults(dai); 398 } 399 return ret; 400 } 401 402 static int sst_be_hw_params(struct snd_pcm_substream *substream, 403 struct snd_pcm_hw_params *params, 404 struct snd_soc_dai *dai) 405 { 406 int ret = 0; 407 408 if (dai->active == 1) 409 ret = send_ssp_cmd(dai, dai->name, 1); 410 return ret; 411 } 412 413 static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt) 414 { 415 int ret = 0; 416 417 if (!dai->active) 418 return 0; 419 420 ret = sst_fill_ssp_config(dai, fmt); 421 if (ret < 0) 422 dev_err(dai->dev, "sst_set_format failed..\n"); 423 424 return ret; 425 } 426 427 static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai, 428 unsigned int tx_mask, unsigned int rx_mask, 429 int slots, int slot_width) { 430 int ret = 0; 431 432 if (!dai->active) 433 return ret; 434 435 ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width); 436 if (ret < 0) 437 dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret); 438 439 return ret; 440 } 441 442 static void sst_disable_ssp(struct snd_pcm_substream *substream, 443 struct snd_soc_dai *dai) 444 { 445 if (!dai->active) { 446 send_ssp_cmd(dai, dai->name, 0); 447 sst_handle_vb_timer(dai, false); 448 } 449 } 450 451 static const struct snd_soc_dai_ops sst_media_dai_ops = { 452 .startup = sst_media_open, 453 .shutdown = sst_media_close, 454 .prepare = sst_media_prepare, 455 .mute_stream = sst_media_digital_mute, 456 }; 457 458 static const struct snd_soc_dai_ops sst_compr_dai_ops = { 459 .mute_stream = sst_media_digital_mute, 460 }; 461 462 static const struct snd_soc_dai_ops sst_be_dai_ops = { 463 .startup = sst_enable_ssp, 464 .hw_params = sst_be_hw_params, 465 .set_fmt = sst_set_format, 466 .set_tdm_slot = sst_platform_set_ssp_slot, 467 .shutdown = sst_disable_ssp, 468 }; 469 470 static struct snd_soc_dai_driver sst_platform_dai[] = { 471 { 472 .name = "media-cpu-dai", 473 .ops = &sst_media_dai_ops, 474 .playback = { 475 .stream_name = "Headset Playback", 476 .channels_min = SST_STEREO, 477 .channels_max = SST_STEREO, 478 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000, 479 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, 480 }, 481 .capture = { 482 .stream_name = "Headset Capture", 483 .channels_min = 1, 484 .channels_max = 2, 485 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000, 486 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, 487 }, 488 }, 489 { 490 .name = "deepbuffer-cpu-dai", 491 .ops = &sst_media_dai_ops, 492 .playback = { 493 .stream_name = "Deepbuffer Playback", 494 .channels_min = SST_STEREO, 495 .channels_max = SST_STEREO, 496 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000, 497 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, 498 }, 499 }, 500 { 501 .name = "compress-cpu-dai", 502 .compress_new = snd_soc_new_compress, 503 .ops = &sst_compr_dai_ops, 504 .playback = { 505 .stream_name = "Compress Playback", 506 .channels_min = 1, 507 }, 508 }, 509 /* BE CPU Dais */ 510 { 511 .name = "ssp0-port", 512 .ops = &sst_be_dai_ops, 513 .playback = { 514 .stream_name = "ssp0 Tx", 515 .channels_min = SST_STEREO, 516 .channels_max = SST_STEREO, 517 .rates = SNDRV_PCM_RATE_48000, 518 .formats = SNDRV_PCM_FMTBIT_S16_LE, 519 }, 520 .capture = { 521 .stream_name = "ssp0 Rx", 522 .channels_min = SST_STEREO, 523 .channels_max = SST_STEREO, 524 .rates = SNDRV_PCM_RATE_48000, 525 .formats = SNDRV_PCM_FMTBIT_S16_LE, 526 }, 527 }, 528 { 529 .name = "ssp1-port", 530 .ops = &sst_be_dai_ops, 531 .playback = { 532 .stream_name = "ssp1 Tx", 533 .channels_min = SST_STEREO, 534 .channels_max = SST_STEREO, 535 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000, 536 .formats = SNDRV_PCM_FMTBIT_S16_LE, 537 }, 538 .capture = { 539 .stream_name = "ssp1 Rx", 540 .channels_min = SST_STEREO, 541 .channels_max = SST_STEREO, 542 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000, 543 .formats = SNDRV_PCM_FMTBIT_S16_LE, 544 }, 545 }, 546 { 547 .name = "ssp2-port", 548 .ops = &sst_be_dai_ops, 549 .playback = { 550 .stream_name = "ssp2 Tx", 551 .channels_min = SST_STEREO, 552 .channels_max = SST_STEREO, 553 .rates = SNDRV_PCM_RATE_48000, 554 .formats = SNDRV_PCM_FMTBIT_S16_LE, 555 }, 556 .capture = { 557 .stream_name = "ssp2 Rx", 558 .channels_min = SST_STEREO, 559 .channels_max = SST_STEREO, 560 .rates = SNDRV_PCM_RATE_48000, 561 .formats = SNDRV_PCM_FMTBIT_S16_LE, 562 }, 563 }, 564 }; 565 566 static int sst_soc_open(struct snd_soc_component *component, 567 struct snd_pcm_substream *substream) 568 { 569 struct snd_pcm_runtime *runtime; 570 571 if (substream->pcm->internal) 572 return 0; 573 574 runtime = substream->runtime; 575 runtime->hw = sst_platform_pcm_hw; 576 return 0; 577 } 578 579 static int sst_soc_trigger(struct snd_soc_component *component, 580 struct snd_pcm_substream *substream, int cmd) 581 { 582 int ret_val = 0, str_id; 583 struct sst_runtime_stream *stream; 584 int status; 585 struct snd_soc_pcm_runtime *rtd = substream->private_data; 586 587 dev_dbg(rtd->dev, "%s called\n", __func__); 588 if (substream->pcm->internal) 589 return 0; 590 stream = substream->runtime->private_data; 591 str_id = stream->stream_info.str_id; 592 switch (cmd) { 593 case SNDRV_PCM_TRIGGER_START: 594 dev_dbg(rtd->dev, "sst: Trigger Start\n"); 595 status = SST_PLATFORM_RUNNING; 596 stream->stream_info.arg = substream; 597 ret_val = stream->ops->stream_start(sst->dev, str_id); 598 break; 599 case SNDRV_PCM_TRIGGER_STOP: 600 dev_dbg(rtd->dev, "sst: in stop\n"); 601 status = SST_PLATFORM_DROPPED; 602 ret_val = stream->ops->stream_drop(sst->dev, str_id); 603 break; 604 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 605 case SNDRV_PCM_TRIGGER_SUSPEND: 606 dev_dbg(rtd->dev, "sst: in pause\n"); 607 status = SST_PLATFORM_PAUSED; 608 ret_val = stream->ops->stream_pause(sst->dev, str_id); 609 break; 610 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 611 case SNDRV_PCM_TRIGGER_RESUME: 612 dev_dbg(rtd->dev, "sst: in pause release\n"); 613 status = SST_PLATFORM_RUNNING; 614 ret_val = stream->ops->stream_pause_release(sst->dev, str_id); 615 break; 616 default: 617 return -EINVAL; 618 } 619 620 if (!ret_val) 621 sst_set_stream_status(stream, status); 622 623 return ret_val; 624 } 625 626 627 static snd_pcm_uframes_t sst_soc_pointer(struct snd_soc_component *component, 628 struct snd_pcm_substream *substream) 629 { 630 struct sst_runtime_stream *stream; 631 int ret_val, status; 632 struct pcm_stream_info *str_info; 633 struct snd_soc_pcm_runtime *rtd = substream->private_data; 634 635 stream = substream->runtime->private_data; 636 status = sst_get_stream_status(stream); 637 if (status == SST_PLATFORM_INIT) 638 return 0; 639 str_info = &stream->stream_info; 640 ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info); 641 if (ret_val) { 642 dev_err(rtd->dev, "sst: error code = %d\n", ret_val); 643 return ret_val; 644 } 645 substream->runtime->delay = str_info->pcm_delay; 646 return str_info->buffer_ptr; 647 } 648 649 static int sst_soc_pcm_new(struct snd_soc_component *component, 650 struct snd_soc_pcm_runtime *rtd) 651 { 652 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0); 653 struct snd_pcm *pcm = rtd->pcm; 654 655 if (dai->driver->playback.channels_min || 656 dai->driver->capture.channels_min) { 657 snd_pcm_set_managed_buffer_all(pcm, 658 SNDRV_DMA_TYPE_CONTINUOUS, 659 snd_dma_continuous_data(GFP_DMA), 660 SST_MIN_BUFFER, SST_MAX_BUFFER); 661 } 662 return 0; 663 } 664 665 static int sst_soc_probe(struct snd_soc_component *component) 666 { 667 struct sst_data *drv = dev_get_drvdata(component->dev); 668 669 drv->soc_card = component->card; 670 return sst_dsp_init_v2_dpcm(component); 671 } 672 673 static void sst_soc_remove(struct snd_soc_component *component) 674 { 675 struct sst_data *drv = dev_get_drvdata(component->dev); 676 677 drv->soc_card = NULL; 678 } 679 680 static const struct snd_soc_component_driver sst_soc_platform_drv = { 681 .name = DRV_NAME, 682 .probe = sst_soc_probe, 683 .remove = sst_soc_remove, 684 .open = sst_soc_open, 685 .trigger = sst_soc_trigger, 686 .pointer = sst_soc_pointer, 687 .compr_ops = &sst_platform_compr_ops, 688 .pcm_construct = sst_soc_pcm_new, 689 }; 690 691 static int sst_platform_probe(struct platform_device *pdev) 692 { 693 struct sst_data *drv; 694 int ret; 695 struct sst_platform_data *pdata; 696 697 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); 698 if (drv == NULL) { 699 return -ENOMEM; 700 } 701 702 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 703 if (pdata == NULL) { 704 return -ENOMEM; 705 } 706 707 pdata->pdev_strm_map = dpcm_strm_map; 708 pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map); 709 drv->pdata = pdata; 710 drv->pdev = pdev; 711 mutex_init(&drv->lock); 712 dev_set_drvdata(&pdev->dev, drv); 713 714 ret = devm_snd_soc_register_component(&pdev->dev, &sst_soc_platform_drv, 715 sst_platform_dai, ARRAY_SIZE(sst_platform_dai)); 716 if (ret) 717 dev_err(&pdev->dev, "registering cpu dais failed\n"); 718 719 return ret; 720 } 721 722 static int sst_platform_remove(struct platform_device *pdev) 723 { 724 dev_dbg(&pdev->dev, "sst_platform_remove success\n"); 725 return 0; 726 } 727 728 #ifdef CONFIG_PM_SLEEP 729 730 static int sst_soc_prepare(struct device *dev) 731 { 732 struct sst_data *drv = dev_get_drvdata(dev); 733 struct snd_soc_pcm_runtime *rtd; 734 735 if (!drv->soc_card) 736 return 0; 737 738 /* suspend all pcms first */ 739 snd_soc_suspend(drv->soc_card->dev); 740 snd_soc_poweroff(drv->soc_card->dev); 741 742 /* set the SSPs to idle */ 743 for_each_card_rtds(drv->soc_card, rtd) { 744 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0); 745 746 if (dai->active) { 747 send_ssp_cmd(dai, dai->name, 0); 748 sst_handle_vb_timer(dai, false); 749 } 750 } 751 752 return 0; 753 } 754 755 static void sst_soc_complete(struct device *dev) 756 { 757 struct sst_data *drv = dev_get_drvdata(dev); 758 struct snd_soc_pcm_runtime *rtd; 759 760 if (!drv->soc_card) 761 return; 762 763 /* restart SSPs */ 764 for_each_card_rtds(drv->soc_card, rtd) { 765 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0); 766 767 if (dai->active) { 768 sst_handle_vb_timer(dai, true); 769 send_ssp_cmd(dai, dai->name, 1); 770 } 771 } 772 snd_soc_resume(drv->soc_card->dev); 773 } 774 775 #else 776 777 #define sst_soc_prepare NULL 778 #define sst_soc_complete NULL 779 780 #endif 781 782 783 static const struct dev_pm_ops sst_platform_pm = { 784 .prepare = sst_soc_prepare, 785 .complete = sst_soc_complete, 786 }; 787 788 static struct platform_driver sst_platform_driver = { 789 .driver = { 790 .name = "sst-mfld-platform", 791 .pm = &sst_platform_pm, 792 }, 793 .probe = sst_platform_probe, 794 .remove = sst_platform_remove, 795 }; 796 797 module_platform_driver(sst_platform_driver); 798 799 MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver"); 800 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>"); 801 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>"); 802 MODULE_LICENSE("GPL v2"); 803 MODULE_ALIAS("platform:sst-atom-hifi2-platform"); 804 MODULE_ALIAS("platform:sst-mfld-platform"); 805