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