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Diffstat (limited to 'sound/soc/intel/atom/sst-mfld-platform-pcm.c')
-rw-r--r--sound/soc/intel/atom/sst-mfld-platform-pcm.c804
1 files changed, 804 insertions, 0 deletions
diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
new file mode 100644
index 000000000000..2fbaf2c75d17
--- /dev/null
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -0,0 +1,804 @@
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, &param);
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");
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-08 07:34:26 -0500