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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 = asoc_substream_to_rtd(substream);
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 goto out_power_up;
335
336
337
338
339
340
341
342 snd_pcm_hw_constraint_step(substream->runtime, 0,
343 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 48);
344 snd_pcm_hw_constraint_step(substream->runtime, 0,
345 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 48);
346
347
348 snd_pcm_hw_constraint_step(substream->runtime, 0,
349 SNDRV_PCM_HW_PARAM_PERIODS, 2);
350
351 return snd_pcm_hw_constraint_integer(runtime,
352 SNDRV_PCM_HW_PARAM_PERIODS);
353out_ops:
354 mutex_unlock(&sst_lock);
355out_power_up:
356 kfree(stream);
357 return ret_val;
358}
359
360static void sst_media_close(struct snd_pcm_substream *substream,
361 struct snd_soc_dai *dai)
362{
363 struct sst_runtime_stream *stream;
364 int str_id;
365
366 stream = substream->runtime->private_data;
367 power_down_sst(stream);
368
369 str_id = stream->stream_info.str_id;
370 if (str_id)
371 stream->ops->close(sst->dev, str_id);
372 module_put(sst->dev->driver->owner);
373 kfree(stream);
374}
375
376static int sst_media_prepare(struct snd_pcm_substream *substream,
377 struct snd_soc_dai *dai)
378{
379 struct sst_runtime_stream *stream;
380 int ret_val, str_id;
381
382 stream = substream->runtime->private_data;
383 str_id = stream->stream_info.str_id;
384 if (stream->stream_info.str_id) {
385 ret_val = stream->ops->stream_drop(sst->dev, str_id);
386 return ret_val;
387 }
388
389 ret_val = sst_platform_alloc_stream(substream, dai);
390 if (ret_val <= 0)
391 return ret_val;
392 snprintf(substream->pcm->id, sizeof(substream->pcm->id),
393 "%d", stream->stream_info.str_id);
394
395 ret_val = sst_platform_init_stream(substream);
396 if (ret_val)
397 return ret_val;
398 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
399 return 0;
400}
401
402static int sst_enable_ssp(struct snd_pcm_substream *substream,
403 struct snd_soc_dai *dai)
404{
405 int ret = 0;
406
407 if (!snd_soc_dai_active(dai)) {
408 ret = sst_handle_vb_timer(dai, true);
409 sst_fill_ssp_defaults(dai);
410 }
411 return ret;
412}
413
414static int sst_be_hw_params(struct snd_pcm_substream *substream,
415 struct snd_pcm_hw_params *params,
416 struct snd_soc_dai *dai)
417{
418 int ret = 0;
419
420 if (snd_soc_dai_active(dai) == 1)
421 ret = send_ssp_cmd(dai, dai->name, 1);
422 return ret;
423}
424
425static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt)
426{
427 int ret = 0;
428
429 if (!snd_soc_dai_active(dai))
430 return 0;
431
432 ret = sst_fill_ssp_config(dai, fmt);
433 if (ret < 0)
434 dev_err(dai->dev, "sst_set_format failed..\n");
435
436 return ret;
437}
438
439static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai,
440 unsigned int tx_mask, unsigned int rx_mask,
441 int slots, int slot_width) {
442 int ret = 0;
443
444 if (!snd_soc_dai_active(dai))
445 return ret;
446
447 ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width);
448 if (ret < 0)
449 dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret);
450
451 return ret;
452}
453
454static void sst_disable_ssp(struct snd_pcm_substream *substream,
455 struct snd_soc_dai *dai)
456{
457 if (!snd_soc_dai_active(dai)) {
458 send_ssp_cmd(dai, dai->name, 0);
459 sst_handle_vb_timer(dai, false);
460 }
461}
462
463static const struct snd_soc_dai_ops sst_media_dai_ops = {
464 .startup = sst_media_open,
465 .shutdown = sst_media_close,
466 .prepare = sst_media_prepare,
467 .mute_stream = sst_media_digital_mute,
468};
469
470static const struct snd_soc_dai_ops sst_compr_dai_ops = {
471 .mute_stream = sst_media_digital_mute,
472};
473
474static const struct snd_soc_dai_ops sst_be_dai_ops = {
475 .startup = sst_enable_ssp,
476 .hw_params = sst_be_hw_params,
477 .set_fmt = sst_set_format,
478 .set_tdm_slot = sst_platform_set_ssp_slot,
479 .shutdown = sst_disable_ssp,
480};
481
482static struct snd_soc_dai_driver sst_platform_dai[] = {
483{
484 .name = "media-cpu-dai",
485 .ops = &sst_media_dai_ops,
486 .playback = {
487 .stream_name = "Headset Playback",
488 .channels_min = SST_STEREO,
489 .channels_max = SST_STEREO,
490 .rates = SNDRV_PCM_RATE_48000,
491 .formats = SNDRV_PCM_FMTBIT_S16_LE,
492 },
493 .capture = {
494 .stream_name = "Headset Capture",
495 .channels_min = 1,
496 .channels_max = 2,
497 .rates = SNDRV_PCM_RATE_48000,
498 .formats = SNDRV_PCM_FMTBIT_S16_LE,
499 },
500},
501{
502 .name = "deepbuffer-cpu-dai",
503 .ops = &sst_media_dai_ops,
504 .playback = {
505 .stream_name = "Deepbuffer Playback",
506 .channels_min = SST_STEREO,
507 .channels_max = SST_STEREO,
508 .rates = SNDRV_PCM_RATE_48000,
509 .formats = SNDRV_PCM_FMTBIT_S16_LE,
510 },
511},
512{
513 .name = "compress-cpu-dai",
514 .compress_new = snd_soc_new_compress,
515 .ops = &sst_compr_dai_ops,
516 .playback = {
517 .stream_name = "Compress Playback",
518 .channels_min = 1,
519 },
520},
521
522{
523 .name = "ssp0-port",
524 .ops = &sst_be_dai_ops,
525 .playback = {
526 .stream_name = "ssp0 Tx",
527 .channels_min = SST_STEREO,
528 .channels_max = SST_STEREO,
529 .rates = SNDRV_PCM_RATE_48000,
530 .formats = SNDRV_PCM_FMTBIT_S16_LE,
531 },
532 .capture = {
533 .stream_name = "ssp0 Rx",
534 .channels_min = SST_STEREO,
535 .channels_max = SST_STEREO,
536 .rates = SNDRV_PCM_RATE_48000,
537 .formats = SNDRV_PCM_FMTBIT_S16_LE,
538 },
539},
540{
541 .name = "ssp1-port",
542 .ops = &sst_be_dai_ops,
543 .playback = {
544 .stream_name = "ssp1 Tx",
545 .channels_min = SST_STEREO,
546 .channels_max = SST_STEREO,
547 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
548 .formats = SNDRV_PCM_FMTBIT_S16_LE,
549 },
550 .capture = {
551 .stream_name = "ssp1 Rx",
552 .channels_min = SST_STEREO,
553 .channels_max = SST_STEREO,
554 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
555 .formats = SNDRV_PCM_FMTBIT_S16_LE,
556 },
557},
558{
559 .name = "ssp2-port",
560 .ops = &sst_be_dai_ops,
561 .playback = {
562 .stream_name = "ssp2 Tx",
563 .channels_min = SST_STEREO,
564 .channels_max = SST_STEREO,
565 .rates = SNDRV_PCM_RATE_48000,
566 .formats = SNDRV_PCM_FMTBIT_S16_LE,
567 },
568 .capture = {
569 .stream_name = "ssp2 Rx",
570 .channels_min = SST_STEREO,
571 .channels_max = SST_STEREO,
572 .rates = SNDRV_PCM_RATE_48000,
573 .formats = SNDRV_PCM_FMTBIT_S16_LE,
574 },
575},
576};
577
578static int sst_soc_open(struct snd_soc_component *component,
579 struct snd_pcm_substream *substream)
580{
581 struct snd_pcm_runtime *runtime;
582
583 if (substream->pcm->internal)
584 return 0;
585
586 runtime = substream->runtime;
587 runtime->hw = sst_platform_pcm_hw;
588 return 0;
589}
590
591static int sst_soc_trigger(struct snd_soc_component *component,
592 struct snd_pcm_substream *substream, int cmd)
593{
594 int ret_val = 0, str_id;
595 struct sst_runtime_stream *stream;
596 int status;
597 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
598
599 dev_dbg(rtd->dev, "%s called\n", __func__);
600 if (substream->pcm->internal)
601 return 0;
602 stream = substream->runtime->private_data;
603 str_id = stream->stream_info.str_id;
604 switch (cmd) {
605 case SNDRV_PCM_TRIGGER_START:
606 dev_dbg(rtd->dev, "sst: Trigger Start\n");
607 status = SST_PLATFORM_RUNNING;
608 stream->stream_info.arg = substream;
609 ret_val = stream->ops->stream_start(sst->dev, str_id);
610 break;
611 case SNDRV_PCM_TRIGGER_STOP:
612 dev_dbg(rtd->dev, "sst: in stop\n");
613 status = SST_PLATFORM_DROPPED;
614 ret_val = stream->ops->stream_drop(sst->dev, str_id);
615 break;
616 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
617 case SNDRV_PCM_TRIGGER_SUSPEND:
618 dev_dbg(rtd->dev, "sst: in pause\n");
619 status = SST_PLATFORM_PAUSED;
620 ret_val = stream->ops->stream_pause(sst->dev, str_id);
621 break;
622 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
623 case SNDRV_PCM_TRIGGER_RESUME:
624 dev_dbg(rtd->dev, "sst: in pause release\n");
625 status = SST_PLATFORM_RUNNING;
626 ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
627 break;
628 default:
629 return -EINVAL;
630 }
631
632 if (!ret_val)
633 sst_set_stream_status(stream, status);
634
635 return ret_val;
636}
637
638
639static snd_pcm_uframes_t sst_soc_pointer(struct snd_soc_component *component,
640 struct snd_pcm_substream *substream)
641{
642 struct sst_runtime_stream *stream;
643 int ret_val, status;
644 struct pcm_stream_info *str_info;
645 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
646
647 stream = substream->runtime->private_data;
648 status = sst_get_stream_status(stream);
649 if (status == SST_PLATFORM_INIT)
650 return 0;
651 str_info = &stream->stream_info;
652 ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
653 if (ret_val) {
654 dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
655 return ret_val;
656 }
657 substream->runtime->delay = str_info->pcm_delay;
658 return str_info->buffer_ptr;
659}
660
661static int sst_soc_pcm_new(struct snd_soc_component *component,
662 struct snd_soc_pcm_runtime *rtd)
663{
664 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
665 struct snd_pcm *pcm = rtd->pcm;
666
667 if (dai->driver->playback.channels_min ||
668 dai->driver->capture.channels_min) {
669 snd_pcm_set_managed_buffer_all(pcm,
670 SNDRV_DMA_TYPE_CONTINUOUS,
671 snd_dma_continuous_data(GFP_DMA),
672 SST_MIN_BUFFER, SST_MAX_BUFFER);
673 }
674 return 0;
675}
676
677static int sst_soc_probe(struct snd_soc_component *component)
678{
679 struct sst_data *drv = dev_get_drvdata(component->dev);
680
681 drv->soc_card = component->card;
682 return sst_dsp_init_v2_dpcm(component);
683}
684
685static void sst_soc_remove(struct snd_soc_component *component)
686{
687 struct sst_data *drv = dev_get_drvdata(component->dev);
688
689 drv->soc_card = NULL;
690}
691
692static const struct snd_soc_component_driver sst_soc_platform_drv = {
693 .name = DRV_NAME,
694 .probe = sst_soc_probe,
695 .remove = sst_soc_remove,
696 .open = sst_soc_open,
697 .trigger = sst_soc_trigger,
698 .pointer = sst_soc_pointer,
699 .compress_ops = &sst_platform_compress_ops,
700 .pcm_construct = sst_soc_pcm_new,
701};
702
703static int sst_platform_probe(struct platform_device *pdev)
704{
705 struct sst_data *drv;
706 int ret;
707 struct sst_platform_data *pdata;
708
709 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
710 if (drv == NULL) {
711 return -ENOMEM;
712 }
713
714 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
715 if (pdata == NULL) {
716 return -ENOMEM;
717 }
718
719 pdata->pdev_strm_map = dpcm_strm_map;
720 pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
721 drv->pdata = pdata;
722 drv->pdev = pdev;
723 mutex_init(&drv->lock);
724 dev_set_drvdata(&pdev->dev, drv);
725
726 ret = devm_snd_soc_register_component(&pdev->dev, &sst_soc_platform_drv,
727 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
728 if (ret)
729 dev_err(&pdev->dev, "registering cpu dais failed\n");
730
731 return ret;
732}
733
734static int sst_platform_remove(struct platform_device *pdev)
735{
736 dev_dbg(&pdev->dev, "sst_platform_remove success\n");
737 return 0;
738}
739
740#ifdef CONFIG_PM_SLEEP
741
742static int sst_soc_prepare(struct device *dev)
743{
744 struct sst_data *drv = dev_get_drvdata(dev);
745 struct snd_soc_pcm_runtime *rtd;
746
747 if (!drv->soc_card)
748 return 0;
749
750
751 snd_soc_suspend(drv->soc_card->dev);
752 snd_soc_poweroff(drv->soc_card->dev);
753
754
755 for_each_card_rtds(drv->soc_card, rtd) {
756 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
757
758 if (snd_soc_dai_active(dai)) {
759 send_ssp_cmd(dai, dai->name, 0);
760 sst_handle_vb_timer(dai, false);
761 }
762 }
763
764 return 0;
765}
766
767static void sst_soc_complete(struct device *dev)
768{
769 struct sst_data *drv = dev_get_drvdata(dev);
770 struct snd_soc_pcm_runtime *rtd;
771
772 if (!drv->soc_card)
773 return;
774
775
776 for_each_card_rtds(drv->soc_card, rtd) {
777 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
778
779 if (snd_soc_dai_active(dai)) {
780 sst_handle_vb_timer(dai, true);
781 send_ssp_cmd(dai, dai->name, 1);
782 }
783 }
784 snd_soc_resume(drv->soc_card->dev);
785}
786
787#else
788
789#define sst_soc_prepare NULL
790#define sst_soc_complete NULL
791
792#endif
793
794
795static const struct dev_pm_ops sst_platform_pm = {
796 .prepare = sst_soc_prepare,
797 .complete = sst_soc_complete,
798};
799
800static struct platform_driver sst_platform_driver = {
801 .driver = {
802 .name = "sst-mfld-platform",
803 .pm = &sst_platform_pm,
804 },
805 .probe = sst_platform_probe,
806 .remove = sst_platform_remove,
807};
808
809module_platform_driver(sst_platform_driver);
810
811MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
812MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
813MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
814MODULE_LICENSE("GPL v2");
815MODULE_ALIAS("platform:sst-atom-hifi2-platform");
816MODULE_ALIAS("platform:sst-mfld-platform");
817
