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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
26struct sst_device *sst;
27static DEFINE_MUTEX(sst_lock);
28
29int 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}
47EXPORT_SYMBOL_GPL(sst_register_dsp);
48
49int 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}
69EXPORT_SYMBOL_GPL(sst_unregister_dsp);
70
71static 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
88static struct sst_dev_stream_map dpcm_strm_map[] = {
89 {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
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
96static 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
103void 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
112static 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
123static 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}
142static 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
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
156static 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
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
173int 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
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
222static 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
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
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
256static 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
273static 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
293static int power_up_sst(struct sst_runtime_stream *stream)
294{
295 return stream->ops->power(sst->dev, true);
296}
297
298static void power_down_sst(struct sst_runtime_stream *stream)
299{
300 stream->ops->power(sst->dev, false);
301}
302
303static 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
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
330 runtime->private_data = stream;
331
332 ret_val = power_up_sst(stream);
333 if (ret_val < 0)
334 return ret_val;
335
336
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);
342out_ops:
343 kfree(stream);
344 mutex_unlock(&sst_lock);
345 return ret_val;
346}
347
348static 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
364static 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
390static int sst_media_hw_params(struct snd_pcm_substream *substream,
391 struct snd_pcm_hw_params *params,
392 struct snd_soc_dai *dai)
393{
394 int ret;
395
396 ret =
397 snd_pcm_lib_malloc_pages(substream,
398 params_buffer_bytes(params));
399 if (ret)
400 return ret;
401 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
402 return 0;
403}
404
405static int sst_media_hw_free(struct snd_pcm_substream *substream,
406 struct snd_soc_dai *dai)
407{
408 return snd_pcm_lib_free_pages(substream);
409}
410
411static int sst_enable_ssp(struct snd_pcm_substream *substream,
412 struct snd_soc_dai *dai)
413{
414 int ret = 0;
415
416 if (!dai->active) {
417 ret = sst_handle_vb_timer(dai, true);
418 sst_fill_ssp_defaults(dai);
419 }
420 return ret;
421}
422
423static int sst_be_hw_params(struct snd_pcm_substream *substream,
424 struct snd_pcm_hw_params *params,
425 struct snd_soc_dai *dai)
426{
427 int ret = 0;
428
429 if (dai->active == 1)
430 ret = send_ssp_cmd(dai, dai->name, 1);
431 return ret;
432}
433
434static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt)
435{
436 int ret = 0;
437
438 if (!dai->active)
439 return 0;
440
441 ret = sst_fill_ssp_config(dai, fmt);
442 if (ret < 0)
443 dev_err(dai->dev, "sst_set_format failed..\n");
444
445 return ret;
446}
447
448static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai,
449 unsigned int tx_mask, unsigned int rx_mask,
450 int slots, int slot_width) {
451 int ret = 0;
452
453 if (!dai->active)
454 return ret;
455
456 ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width);
457 if (ret < 0)
458 dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret);
459
460 return ret;
461}
462
463static void sst_disable_ssp(struct snd_pcm_substream *substream,
464 struct snd_soc_dai *dai)
465{
466 if (!dai->active) {
467 send_ssp_cmd(dai, dai->name, 0);
468 sst_handle_vb_timer(dai, false);
469 }
470}
471
472static const struct snd_soc_dai_ops sst_media_dai_ops = {
473 .startup = sst_media_open,
474 .shutdown = sst_media_close,
475 .prepare = sst_media_prepare,
476 .hw_params = sst_media_hw_params,
477 .hw_free = sst_media_hw_free,
478 .mute_stream = sst_media_digital_mute,
479};
480
481static const struct snd_soc_dai_ops sst_compr_dai_ops = {
482 .mute_stream = sst_media_digital_mute,
483};
484
485static const struct snd_soc_dai_ops sst_be_dai_ops = {
486 .startup = sst_enable_ssp,
487 .hw_params = sst_be_hw_params,
488 .set_fmt = sst_set_format,
489 .set_tdm_slot = sst_platform_set_ssp_slot,
490 .shutdown = sst_disable_ssp,
491};
492
493static struct snd_soc_dai_driver sst_platform_dai[] = {
494{
495 .name = "media-cpu-dai",
496 .ops = &sst_media_dai_ops,
497 .playback = {
498 .stream_name = "Headset Playback",
499 .channels_min = SST_STEREO,
500 .channels_max = SST_STEREO,
501 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
502 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
503 },
504 .capture = {
505 .stream_name = "Headset Capture",
506 .channels_min = 1,
507 .channels_max = 2,
508 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
509 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
510 },
511},
512{
513 .name = "deepbuffer-cpu-dai",
514 .ops = &sst_media_dai_ops,
515 .playback = {
516 .stream_name = "Deepbuffer Playback",
517 .channels_min = SST_STEREO,
518 .channels_max = SST_STEREO,
519 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
520 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
521 },
522},
523{
524 .name = "compress-cpu-dai",
525 .compress_new = snd_soc_new_compress,
526 .ops = &sst_compr_dai_ops,
527 .playback = {
528 .stream_name = "Compress Playback",
529 .channels_min = 1,
530 },
531},
532
533{
534 .name = "ssp0-port",
535 .ops = &sst_be_dai_ops,
536 .playback = {
537 .stream_name = "ssp0 Tx",
538 .channels_min = SST_STEREO,
539 .channels_max = SST_STEREO,
540 .rates = SNDRV_PCM_RATE_48000,
541 .formats = SNDRV_PCM_FMTBIT_S16_LE,
542 },
543 .capture = {
544 .stream_name = "ssp0 Rx",
545 .channels_min = SST_STEREO,
546 .channels_max = SST_STEREO,
547 .rates = SNDRV_PCM_RATE_48000,
548 .formats = SNDRV_PCM_FMTBIT_S16_LE,
549 },
550},
551{
552 .name = "ssp1-port",
553 .ops = &sst_be_dai_ops,
554 .playback = {
555 .stream_name = "ssp1 Tx",
556 .channels_min = SST_STEREO,
557 .channels_max = SST_STEREO,
558 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
559 .formats = SNDRV_PCM_FMTBIT_S16_LE,
560 },
561 .capture = {
562 .stream_name = "ssp1 Rx",
563 .channels_min = SST_STEREO,
564 .channels_max = SST_STEREO,
565 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
566 .formats = SNDRV_PCM_FMTBIT_S16_LE,
567 },
568},
569{
570 .name = "ssp2-port",
571 .ops = &sst_be_dai_ops,
572 .playback = {
573 .stream_name = "ssp2 Tx",
574 .channels_min = SST_STEREO,
575 .channels_max = SST_STEREO,
576 .rates = SNDRV_PCM_RATE_48000,
577 .formats = SNDRV_PCM_FMTBIT_S16_LE,
578 },
579 .capture = {
580 .stream_name = "ssp2 Rx",
581 .channels_min = SST_STEREO,
582 .channels_max = SST_STEREO,
583 .rates = SNDRV_PCM_RATE_48000,
584 .formats = SNDRV_PCM_FMTBIT_S16_LE,
585 },
586},
587};
588
589static int sst_platform_open(struct snd_pcm_substream *substream)
590{
591 struct snd_pcm_runtime *runtime;
592
593 if (substream->pcm->internal)
594 return 0;
595
596 runtime = substream->runtime;
597 runtime->hw = sst_platform_pcm_hw;
598 return 0;
599}
600
601static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
602 int cmd)
603{
604 int ret_val = 0, str_id;
605 struct sst_runtime_stream *stream;
606 int status;
607 struct snd_soc_pcm_runtime *rtd = substream->private_data;
608
609 dev_dbg(rtd->dev, "sst_platform_pcm_trigger called\n");
610 if (substream->pcm->internal)
611 return 0;
612 stream = substream->runtime->private_data;
613 str_id = stream->stream_info.str_id;
614 switch (cmd) {
615 case SNDRV_PCM_TRIGGER_START:
616 dev_dbg(rtd->dev, "sst: Trigger Start\n");
617 status = SST_PLATFORM_RUNNING;
618 stream->stream_info.arg = substream;
619 ret_val = stream->ops->stream_start(sst->dev, str_id);
620 break;
621 case SNDRV_PCM_TRIGGER_STOP:
622 dev_dbg(rtd->dev, "sst: in stop\n");
623 status = SST_PLATFORM_DROPPED;
624 ret_val = stream->ops->stream_drop(sst->dev, str_id);
625 break;
626 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
627 case SNDRV_PCM_TRIGGER_SUSPEND:
628 dev_dbg(rtd->dev, "sst: in pause\n");
629 status = SST_PLATFORM_PAUSED;
630 ret_val = stream->ops->stream_pause(sst->dev, str_id);
631 break;
632 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
633 case SNDRV_PCM_TRIGGER_RESUME:
634 dev_dbg(rtd->dev, "sst: in pause release\n");
635 status = SST_PLATFORM_RUNNING;
636 ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
637 break;
638 default:
639 return -EINVAL;
640 }
641
642 if (!ret_val)
643 sst_set_stream_status(stream, status);
644
645 return ret_val;
646}
647
648
649static snd_pcm_uframes_t sst_platform_pcm_pointer
650 (struct snd_pcm_substream *substream)
651{
652 struct sst_runtime_stream *stream;
653 int ret_val, status;
654 struct pcm_stream_info *str_info;
655 struct snd_soc_pcm_runtime *rtd = substream->private_data;
656
657 stream = substream->runtime->private_data;
658 status = sst_get_stream_status(stream);
659 if (status == SST_PLATFORM_INIT)
660 return 0;
661 str_info = &stream->stream_info;
662 ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
663 if (ret_val) {
664 dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
665 return ret_val;
666 }
667 substream->runtime->delay = str_info->pcm_delay;
668 return str_info->buffer_ptr;
669}
670
671static const struct snd_pcm_ops sst_platform_ops = {
672 .open = sst_platform_open,
673 .ioctl = snd_pcm_lib_ioctl,
674 .trigger = sst_platform_pcm_trigger,
675 .pointer = sst_platform_pcm_pointer,
676};
677
678static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
679{
680 struct snd_soc_dai *dai = rtd->cpu_dai;
681 struct snd_pcm *pcm = rtd->pcm;
682
683 if (dai->driver->playback.channels_min ||
684 dai->driver->capture.channels_min) {
685 snd_pcm_lib_preallocate_pages_for_all(pcm,
686 SNDRV_DMA_TYPE_CONTINUOUS,
687 snd_dma_continuous_data(GFP_DMA),
688 SST_MIN_BUFFER, SST_MAX_BUFFER);
689 }
690 return 0;
691}
692
693static int sst_soc_probe(struct snd_soc_component *component)
694{
695 struct sst_data *drv = dev_get_drvdata(component->dev);
696
697 drv->soc_card = component->card;
698 return sst_dsp_init_v2_dpcm(component);
699}
700
701static void sst_soc_remove(struct snd_soc_component *component)
702{
703 struct sst_data *drv = dev_get_drvdata(component->dev);
704
705 drv->soc_card = NULL;
706}
707
708static const struct snd_soc_component_driver sst_soc_platform_drv = {
709 .name = DRV_NAME,
710 .probe = sst_soc_probe,
711 .remove = sst_soc_remove,
712 .ops = &sst_platform_ops,
713 .compr_ops = &sst_platform_compr_ops,
714 .pcm_new = sst_pcm_new,
715};
716
717static int sst_platform_probe(struct platform_device *pdev)
718{
719 struct sst_data *drv;
720 int ret;
721 struct sst_platform_data *pdata;
722
723 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
724 if (drv == NULL) {
725 return -ENOMEM;
726 }
727
728 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
729 if (pdata == NULL) {
730 return -ENOMEM;
731 }
732
733 pdata->pdev_strm_map = dpcm_strm_map;
734 pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
735 drv->pdata = pdata;
736 drv->pdev = pdev;
737 mutex_init(&drv->lock);
738 dev_set_drvdata(&pdev->dev, drv);
739
740 ret = devm_snd_soc_register_component(&pdev->dev, &sst_soc_platform_drv,
741 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
742 if (ret)
743 dev_err(&pdev->dev, "registering cpu dais failed\n");
744
745 return ret;
746}
747
748static int sst_platform_remove(struct platform_device *pdev)
749{
750 dev_dbg(&pdev->dev, "sst_platform_remove success\n");
751 return 0;
752}
753
754#ifdef CONFIG_PM_SLEEP
755
756static int sst_soc_prepare(struct device *dev)
757{
758 struct sst_data *drv = dev_get_drvdata(dev);
759 struct snd_soc_pcm_runtime *rtd;
760
761 if (!drv->soc_card)
762 return 0;
763
764
765 snd_soc_suspend(drv->soc_card->dev);
766 snd_soc_poweroff(drv->soc_card->dev);
767
768
769 for_each_card_rtds(drv->soc_card, rtd) {
770 struct snd_soc_dai *dai = rtd->cpu_dai;
771
772 if (dai->active) {
773 send_ssp_cmd(dai, dai->name, 0);
774 sst_handle_vb_timer(dai, false);
775 }
776 }
777
778 return 0;
779}
780
781static void sst_soc_complete(struct device *dev)
782{
783 struct sst_data *drv = dev_get_drvdata(dev);
784 struct snd_soc_pcm_runtime *rtd;
785
786 if (!drv->soc_card)
787 return;
788
789
790 for_each_card_rtds(drv->soc_card, rtd) {
791 struct snd_soc_dai *dai = rtd->cpu_dai;
792
793 if (dai->active) {
794 sst_handle_vb_timer(dai, true);
795 send_ssp_cmd(dai, dai->name, 1);
796 }
797 }
798 snd_soc_resume(drv->soc_card->dev);
799}
800
801#else
802
803#define sst_soc_prepare NULL
804#define sst_soc_complete NULL
805
806#endif
807
808
809static const struct dev_pm_ops sst_platform_pm = {
810 .prepare = sst_soc_prepare,
811 .complete = sst_soc_complete,
812};
813
814static struct platform_driver sst_platform_driver = {
815 .driver = {
816 .name = "sst-mfld-platform",
817 .pm = &sst_platform_pm,
818 },
819 .probe = sst_platform_probe,
820 .remove = sst_platform_remove,
821};
822
823module_platform_driver(sst_platform_driver);
824
825MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
826MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
827MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
828MODULE_LICENSE("GPL v2");
829MODULE_ALIAS("platform:sst-atom-hifi2-platform");
830MODULE_ALIAS("platform:sst-mfld-platform");
831
