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ASoC: Intel: sst - add compressed ops handling
[deliverable/linux.git] / sound / soc / intel / sst-mfld-platform-pcm.c
CommitLineData
d927fdae 1/*
a4b12990 2 * sst_mfld_platform.c - Intel MID Platform driver
d927fdae 3 *
61b165ca 4 * Copyright (C) 2010-2014 Intel Corp
d927fdae
VK		 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 *
d927fdae 18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
d927fdae
VK		 19 */
20#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
22#include <linux/slab.h>
23#include <linux/io.h>
da155d5b 24#include <linux/module.h>
d927fdae
VK		 25#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/pcm_params.h>
28#include <sound/soc.h>
c514a911 29#include <sound/compress_driver.h>
61b165ca 30#include <asm/platform_sst_audio.h>
a4b12990 31#include "sst-mfld-platform.h"
61b165ca 32#include "sst-atom-controls.h"
d927fdae 33
4b68b4e1 34struct sst_device *sst;
03c33042 35static DEFINE_MUTEX(sst_lock);
4b68b4e1 36extern struct snd_compr_ops sst_platform_compr_ops;
03c33042
VK		 37
38int sst_register_dsp(struct sst_device *dev)
39{
656a22a1
TI		 40 if (WARN_ON(!dev))
41 return -EINVAL;
03c33042
VK		 42 if (!try_module_get(dev->dev->driver->owner))
43 return -ENODEV;
44 mutex_lock(&sst_lock);
45 if (sst) {
02024756 46 dev_err(dev->dev, "we already have a device %s\n", sst->name);
03c33042
VK		 47 module_put(dev->dev->driver->owner);
48 mutex_unlock(&sst_lock);
49 return -EEXIST;
50 }
02024756 51 dev_dbg(dev->dev, "registering device %s\n", dev->name);
03c33042
VK		 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{
656a22a1
TI		 60 if (WARN_ON(!dev))
61 return -EINVAL;
03c33042
VK		 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);
02024756 73 dev_dbg(dev->dev, "unreg %s\n", sst->name);
03c33042
VK		 74 sst = NULL;
75 mutex_unlock(&sst_lock);
76 return 0;
77}
78EXPORT_SYMBOL_GPL(sst_unregister_dsp);
79
d927fdae
VK		 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),
d927fdae
VK		 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
61b165ca
VK		 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
c82351da 104static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream)
d927fdae 105{
c82351da
VK		 106
107 return sst_send_pipe_gains(dai, stream, mute);
108}
5c68536f 109
d927fdae 110/* helper functions */
4496ffab 111void sst_set_stream_status(struct sst_runtime_stream *stream,
5c68536f
HP		 112 int state)
113{
d89b0a13
LG		 114 unsigned long flags;
115 spin_lock_irqsave(&stream->status_lock, flags);
5c68536f 116 stream->stream_status = state;
d89b0a13 117 spin_unlock_irqrestore(&stream->status_lock, flags);
5c68536f
HP		 118}
119
120static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
121{
122 int state;
d89b0a13 123 unsigned long flags;
5c68536f 124
d89b0a13 125 spin_lock_irqsave(&stream->status_lock, flags);
5c68536f 126 state = stream->stream_status;
d89b0a13 127 spin_unlock_irqrestore(&stream->status_lock, flags);
5c68536f
HP		 128 return state;
129}
130
a870cdce
VK		 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}
5c68536f 150static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
a870cdce 151 struct snd_sst_stream_params *param)
5c68536f 152{
a870cdce
VK		 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;
5c68536f 156
a870cdce
VK		 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}
61b165ca
VK		 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
a870cdce 181int sst_fill_stream_params(void *substream,
61b165ca 182 const struct sst_data *ctx, struct snd_sst_params *str_params, bool is_compress)
a870cdce 183{
61b165ca
VK		 184 int map_size;
185 int index;
186 struct sst_dev_stream_map *map;
a870cdce
VK		 187 struct snd_pcm_substream *pstream = NULL;
188 struct snd_compr_stream *cstream = NULL;
189
61b165ca
VK		 190 map = ctx->pdata->pdev_strm_map;
191 map_size = ctx->pdata->strm_map_size;
192
a870cdce
VK		 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 */
61b165ca
VK		 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
a870cdce 212 str_params->ops = (u8)pstream->stream;
61b165ca
VK		 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;
a870cdce 224
61b165ca
VK		 225 str_params->ops = (u8)cstream->direction;
226 }
a870cdce 227 return 0;
5c68536f
HP		 228}
229
a870cdce 230static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
6df5d768 231 struct snd_soc_dai *dai)
d927fdae
VK		 232{
233 struct sst_runtime_stream *stream =
234 substream->runtime->private_data;
a870cdce
VK		 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;
6df5d768 239 struct sst_data *ctx = snd_soc_dai_get_drvdata(dai);
d927fdae
VK		 240
241 /* set codec params and inform SST driver the same */
5c68536f 242 sst_fill_pcm_params(substream, &param);
a870cdce 243 sst_fill_alloc_params(substream, &alloc_params);
d927fdae 244 substream->runtime->dma_area = substream->dma_buffer.area;
d927fdae 245 str_params.sparams = param;
a870cdce
VK		 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 */
61b165ca 250 ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
d927fdae
VK		 251 if (ret_val < 0)
252 return ret_val;
253
a870cdce
VK		 254 stream->stream_info.str_id = str_params.stream_id;
255
b12b087c 256 ret_val = stream->ops->open(sst->dev, &str_params);
a870cdce
VK		 257 if (ret_val <= 0)
258 return ret_val;
259
260
d927fdae
VK		 261 return ret_val;
262}
263
9daa5bd3 264static void sst_period_elapsed(void *arg)
d927fdae 265{
9daa5bd3 266 struct snd_pcm_substream *substream = arg;
d927fdae 267 struct sst_runtime_stream *stream;
5c68536f 268 int status;
d927fdae
VK		 269
270 if (!substream || !substream->runtime)
271 return;
272 stream = substream->runtime->private_data;
273 if (!stream)
274 return;
5c68536f
HP		 275 status = sst_get_stream_status(stream);
276 if (status != SST_PLATFORM_RUNNING)
d927fdae 277 return;
d927fdae 278 snd_pcm_period_elapsed(substream);
d927fdae
VK		 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;
02024756 285 struct snd_soc_pcm_runtime *rtd = substream->private_data;
d927fdae
VK		 286 int ret_val;
287
02024756 288 dev_dbg(rtd->dev, "setting buffer ptr param\n");
5c68536f 289 sst_set_stream_status(stream, SST_PLATFORM_INIT);
d927fdae 290 stream->stream_info.period_elapsed = sst_period_elapsed;
9daa5bd3 291 stream->stream_info.arg = substream;
d927fdae
VK		 292 stream->stream_info.buffer_ptr = 0;
293 stream->stream_info.sfreq = substream->runtime->rate;
b12b087c 294 ret_val = stream->ops->stream_init(sst->dev, &stream->stream_info);
d927fdae 295 if (ret_val)
02024756 296 dev_err(rtd->dev, "control_set ret error %d\n", ret_val);
d927fdae
VK		 297 return ret_val;
298
299}
d927fdae 300
0121327c
VK		 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
6cc0f4e6
VK		 311static int sst_media_open(struct snd_pcm_substream *substream,
312 struct snd_soc_dai *dai)
d927fdae 313{
6cc0f4e6 314 int ret_val = 0;
22be504a 315 struct snd_pcm_runtime *runtime = substream->runtime;
d927fdae 316 struct sst_runtime_stream *stream;
22be504a 317
d927fdae
VK		 318 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
319 if (!stream)
320 return -ENOMEM;
d927fdae 321 spin_lock_init(&stream->status_lock);
03c33042
VK		 322
323 /* get the sst ops */
324 mutex_lock(&sst_lock);
6cc0f4e6
VK		 325 if (!sst ||
326 !try_module_get(sst->dev->driver->owner)) {
02024756 327 dev_err(dai->dev, "no device available to run\n");
6cc0f4e6
VK		 328 ret_val = -ENODEV;
329 goto out_ops;
d927fdae 330 }
03c33042
VK		 331 stream->ops = sst->ops;
332 mutex_unlock(&sst_lock);
333
334 stream->stream_info.str_id = 0;
6cc0f4e6 335
9daa5bd3 336 stream->stream_info.arg = substream;
03c33042 337 /* allocate memory for SST API set */
d927fdae 338 runtime->private_data = stream;
283e42e0 339
0121327c
VK		 340 ret_val = power_up_sst(stream);
341 if (ret_val < 0)
342 return ret_val;
343
6cc0f4e6
VK		 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;
d927fdae
VK		 354}
355
6cc0f4e6
VK		 356static void sst_media_close(struct snd_pcm_substream *substream,
357 struct snd_soc_dai *dai)
d927fdae
VK		 358{
359 struct sst_runtime_stream *stream;
360 int ret_val = 0, str_id;
361
d927fdae 362 stream = substream->runtime->private_data;
0121327c
VK		 363 power_down_sst(stream);
364
d927fdae 365 str_id = stream->stream_info.str_id;
d927fdae 366 if (str_id)
b12b087c 367 ret_val = stream->ops->close(sst->dev, str_id);
03c33042 368 module_put(sst->dev->driver->owner);
d927fdae 369 kfree(stream);
61b165ca
VK		 370}
371
6df5d768 372static inline unsigned int get_current_pipe_id(struct snd_soc_dai *dai,
61b165ca
VK		 373 struct snd_pcm_substream *substream)
374{
6df5d768 375 struct sst_data *sst = snd_soc_dai_get_drvdata(dai);
61b165ca
VK		 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;
02024756 381
61b165ca
VK		 382 pipe_id = map[str_id].device_id;
383
6df5d768 384 dev_dbg(dai->dev, "got pipe_id = %#x for str_id = %d\n",
02024756 385 pipe_id, str_id);
61b165ca 386 return pipe_id;
d927fdae
VK		 387}
388
6cc0f4e6
VK		 389static int sst_media_prepare(struct snd_pcm_substream *substream,
390 struct snd_soc_dai *dai)
d927fdae
VK		 391{
392 struct sst_runtime_stream *stream;
393 int ret_val = 0, str_id;
394
d927fdae
VK		 395 stream = substream->runtime->private_data;
396 str_id = stream->stream_info.str_id;
397 if (stream->stream_info.str_id) {
b12b087c 398 ret_val = stream->ops->stream_drop(sst->dev, str_id);
d927fdae
VK		 399 return ret_val;
400 }
401
6df5d768 402 ret_val = sst_platform_alloc_stream(substream, dai);
a870cdce 403 if (ret_val <= 0)
d927fdae
VK		 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
6cc0f4e6
VK		 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
c82351da
VK		 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
6cc0f4e6
VK		 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,
c82351da
VK		 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},
6cc0f4e6
VK		 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
5106f5a1 571static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
d927fdae
VK		 572 int cmd)
573{
574 int ret_val = 0, str_id;
575 struct sst_runtime_stream *stream;
5981c2d6 576 int status;
02024756 577 struct snd_soc_pcm_runtime *rtd = substream->private_data;
d927fdae 578
02024756 579 dev_dbg(rtd->dev, "sst_platform_pcm_trigger called\n");
d2b16b8f
VK		 580 if (substream->pcm->internal)
581 return 0;
d927fdae 582 stream = substream->runtime->private_data;
d927fdae 583 str_id = stream->stream_info.str_id;
d927fdae
VK		 584 switch (cmd) {
585 case SNDRV_PCM_TRIGGER_START:
02024756 586 dev_dbg(rtd->dev, "sst: Trigger Start\n");
a211701e 587 status = SST_PLATFORM_RUNNING;
9daa5bd3 588 stream->stream_info.arg = substream;
b12b087c 589 ret_val = stream->ops->stream_start(sst->dev, str_id);
d927fdae
VK		 590 break;
591 case SNDRV_PCM_TRIGGER_STOP:
02024756 592 dev_dbg(rtd->dev, "sst: in stop\n");
a211701e 593 status = SST_PLATFORM_DROPPED;
b12b087c 594 ret_val = stream->ops->stream_drop(sst->dev, str_id);
d927fdae
VK		 595 break;
596 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
02024756 597 dev_dbg(rtd->dev, "sst: in pause\n");
a211701e 598 status = SST_PLATFORM_PAUSED;
b12b087c 599 ret_val = stream->ops->stream_pause(sst->dev, str_id);
d927fdae
VK		 600 break;
601 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
02024756 602 dev_dbg(rtd->dev, "sst: in pause release\n");
a211701e 603 status = SST_PLATFORM_RUNNING;
b12b087c 604 ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
d927fdae
VK		 605 break;
606 default:
a211701e 607 return -EINVAL;
d927fdae 608 }
5981c2d6 609
a211701e
HP		 610 if (!ret_val)
611 sst_set_stream_status(stream, status);
612
d927fdae
VK		 613 return ret_val;
614}
615
616
5106f5a1 617static snd_pcm_uframes_t sst_platform_pcm_pointer
d927fdae
VK		 618 (struct snd_pcm_substream *substream)
619{
620 struct sst_runtime_stream *stream;
5c68536f 621 int ret_val, status;
d927fdae 622 struct pcm_stream_info *str_info;
02024756 623 struct snd_soc_pcm_runtime *rtd = substream->private_data;
d927fdae 624
d927fdae 625 stream = substream->runtime->private_data;
5c68536f
HP		 626 status = sst_get_stream_status(stream);
627 if (status == SST_PLATFORM_INIT)
d927fdae 628 return 0;
d927fdae 629 str_info = &stream->stream_info;
b12b087c 630 ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
d927fdae 631 if (ret_val) {
02024756 632 dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
d927fdae
VK		 633 return ret_val;
634 }
2a635825 635 substream->runtime->delay = str_info->pcm_delay;
6cc0f4e6 636 return str_info->buffer_ptr;
9ab88434 637}
638
d927fdae 639static struct snd_pcm_ops sst_platform_ops = {
5106f5a1 640 .open = sst_platform_open,
d927fdae 641 .ioctl = snd_pcm_lib_ioctl,
5106f5a1
VK		 642 .trigger = sst_platform_pcm_trigger,
643 .pointer = sst_platform_pcm_pointer,
d927fdae
VK		 644};
645
646static void sst_pcm_free(struct snd_pcm *pcm)
647{
02024756 648 dev_dbg(pcm->dev, "sst_pcm_free called\n");
d927fdae
VK		 649 snd_pcm_lib_preallocate_free_for_all(pcm);
650}
651
8faa8c1a 652static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
d927fdae 653{
6cc0f4e6 654 struct snd_soc_dai *dai = rtd->cpu_dai;
552d1ef6 655 struct snd_pcm *pcm = rtd->pcm;
d927fdae
VK		 656 int retval = 0;
657
6cc0f4e6
VK		 658 if (dai->driver->playback.channels_min ||
659 dai->driver->capture.channels_min) {
d927fdae
VK		 660 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
661 SNDRV_DMA_TYPE_CONTINUOUS,
6cc0f4e6 662 snd_dma_continuous_data(GFP_DMA),
d927fdae
VK		 663 SST_MIN_BUFFER, SST_MAX_BUFFER);
664 if (retval) {
02024756 665 dev_err(rtd->dev, "dma buffer allocationf fail\n");
d927fdae
VK		 666 return retval;
667 }
668 }
d927fdae
VK		 669 return retval;
670}
c514a911 671
d8499c9b
VK		 672static int sst_soc_probe(struct snd_soc_platform *platform)
673{
674 return sst_dsp_init_v2_dpcm(platform);
675}
676
677static struct snd_soc_platform_driver sst_soc_platform_drv = {
678 .probe = sst_soc_probe,
d927fdae 679 .ops = &sst_platform_ops,
c514a911 680 .compr_ops = &sst_platform_compr_ops,
d927fdae
VK		 681 .pcm_new = sst_pcm_new,
682 .pcm_free = sst_pcm_free,
683};
684
2b4c78df
VK		 685static const struct snd_soc_component_driver sst_component = {
686 .name = "sst",
687};
688
689
d927fdae
VK		 690static int sst_platform_probe(struct platform_device *pdev)
691{
61b165ca 692 struct sst_data *drv;
d927fdae 693 int ret;
2741d43a 694 struct sst_platform_data *pdata;
61b165ca
VK		 695
696 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
19a23a5d 697 if (drv == NULL) {
61b165ca
VK		 698 return -ENOMEM;
699 }
700
2741d43a
SP		 701 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
702 if (pdata == NULL) {
2741d43a
SP		 703 return -ENOMEM;
704 }
705
61b165ca
VK		 706 pdata->pdev_strm_map = dpcm_strm_map;
707 pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
708 drv->pdata = pdata;
709 mutex_init(&drv->lock);
710 dev_set_drvdata(&pdev->dev, drv);
d927fdae 711
d927fdae
VK		 712 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
713 if (ret) {
02024756 714 dev_err(&pdev->dev, "registering soc platform failed\n");
d927fdae
VK		 715 return ret;
716 }
5c68536f 717
b1c36861 718 ret = snd_soc_register_component(&pdev->dev, &sst_component,
d927fdae
VK		 719 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
720 if (ret) {
02024756 721 dev_err(&pdev->dev, "registering cpu dais failed\n");
d927fdae
VK		 722 snd_soc_unregister_platform(&pdev->dev);
723 }
724 return ret;
725}
726
727static int sst_platform_remove(struct platform_device *pdev)
728{
729
b1c36861 730 snd_soc_unregister_component(&pdev->dev);
d927fdae 731 snd_soc_unregister_platform(&pdev->dev);
02024756 732 dev_dbg(&pdev->dev, "sst_platform_remove success\n");
d927fdae
VK		 733 return 0;
734}
735
736static struct platform_driver sst_platform_driver = {
737 .driver = {
a4b12990 738 .name = "sst-mfld-platform",
d927fdae
VK		 739 .owner = THIS_MODULE,
740 },
741 .probe = sst_platform_probe,
742 .remove = sst_platform_remove,
743};
744
29515d62 745module_platform_driver(sst_platform_driver);
d927fdae
VK		 746
747MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
748MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
749MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
750MODULE_LICENSE("GPL v2");
a4b12990 751MODULE_ALIAS("platform:sst-mfld-platform");
Linux kernel - Deliverables
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