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mtip32xx: fix error handling in mtip_init()
[zen-stable.git] / sound / soc / soc-pcm.c
blobcdc860a5ff37ca0fe070bdc9f6f4532e1cd6a7c3
1 /*
2 * soc-pcm.c -- ALSA SoC PCM
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
8 *
9 * Authors: Liam Girdwood <lrg@ti.com>
10 * Mark Brown <broonie@opensource.wolfsonmicro.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 */
18
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/delay.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/slab.h>
24 #include <linux/workqueue.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/initval.h>
30
31 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
32 struct snd_soc_dai *soc_dai)
33 {
34 struct snd_soc_pcm_runtime *rtd = substream->private_data;
35 int ret;
36
37 if (!soc_dai->driver->symmetric_rates &&
38 !rtd->dai_link->symmetric_rates)
39 return 0;
40
41 /* This can happen if multiple streams are starting simultaneously -
42 * the second can need to get its constraints before the first has
43 * picked a rate. Complain and allow the application to carry on.
44 */
45 if (!soc_dai->rate) {
46 dev_warn(soc_dai->dev,
47 "Not enforcing symmetric_rates due to race\n");
48 return 0;
49 }
50
51 dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate);
52
53 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
54 SNDRV_PCM_HW_PARAM_RATE,
55 soc_dai->rate, soc_dai->rate);
56 if (ret < 0) {
57 dev_err(soc_dai->dev,
58 "Unable to apply rate symmetry constraint: %d\n", ret);
59 return ret;
60 }
61
62 return 0;
63 }
64
65 /*
66 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
67 * then initialized and any private data can be allocated. This also calls
68 * startup for the cpu DAI, platform, machine and codec DAI.
69 */
70 static int soc_pcm_open(struct snd_pcm_substream *substream)
71 {
72 struct snd_soc_pcm_runtime *rtd = substream->private_data;
73 struct snd_pcm_runtime *runtime = substream->runtime;
74 struct snd_soc_platform *platform = rtd->platform;
75 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
76 struct snd_soc_dai *codec_dai = rtd->codec_dai;
77 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
78 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
79 int ret = 0;
80
81 pm_runtime_get_sync(cpu_dai->dev);
82 pm_runtime_get_sync(codec_dai->dev);
83 pm_runtime_get_sync(platform->dev);
84
85 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
86
87 /* startup the audio subsystem */
88 if (cpu_dai->driver->ops->startup) {
89 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
90 if (ret < 0) {
91 printk(KERN_ERR "asoc: can't open interface %s\n",
92 cpu_dai->name);
93 goto out;
94 }
95 }
96
97 if (platform->driver->ops && platform->driver->ops->open) {
98 ret = platform->driver->ops->open(substream);
99 if (ret < 0) {
100 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
101 goto platform_err;
102 }
103 }
104
105 if (codec_dai->driver->ops->startup) {
106 ret = codec_dai->driver->ops->startup(substream, codec_dai);
107 if (ret < 0) {
108 printk(KERN_ERR "asoc: can't open codec %s\n",
109 codec_dai->name);
110 goto codec_dai_err;
111 }
112 }
113
114 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
115 ret = rtd->dai_link->ops->startup(substream);
116 if (ret < 0) {
117 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
118 goto machine_err;
119 }
120 }
121
122 /* Check that the codec and cpu DAIs are compatible */
123 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
124 runtime->hw.rate_min =
125 max(codec_dai_drv->playback.rate_min,
126 cpu_dai_drv->playback.rate_min);
127 runtime->hw.rate_max =
128 min(codec_dai_drv->playback.rate_max,
129 cpu_dai_drv->playback.rate_max);
130 runtime->hw.channels_min =
131 max(codec_dai_drv->playback.channels_min,
132 cpu_dai_drv->playback.channels_min);
133 runtime->hw.channels_max =
134 min(codec_dai_drv->playback.channels_max,
135 cpu_dai_drv->playback.channels_max);
136 runtime->hw.formats =
137 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
138 runtime->hw.rates =
139 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
140 if (codec_dai_drv->playback.rates
141 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
142 runtime->hw.rates |= cpu_dai_drv->playback.rates;
143 if (cpu_dai_drv->playback.rates
144 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
145 runtime->hw.rates |= codec_dai_drv->playback.rates;
146 } else {
147 runtime->hw.rate_min =
148 max(codec_dai_drv->capture.rate_min,
149 cpu_dai_drv->capture.rate_min);
150 runtime->hw.rate_max =
151 min(codec_dai_drv->capture.rate_max,
152 cpu_dai_drv->capture.rate_max);
153 runtime->hw.channels_min =
154 max(codec_dai_drv->capture.channels_min,
155 cpu_dai_drv->capture.channels_min);
156 runtime->hw.channels_max =
157 min(codec_dai_drv->capture.channels_max,
158 cpu_dai_drv->capture.channels_max);
159 runtime->hw.formats =
160 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
161 runtime->hw.rates =
162 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
163 if (codec_dai_drv->capture.rates
164 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
165 runtime->hw.rates |= cpu_dai_drv->capture.rates;
166 if (cpu_dai_drv->capture.rates
167 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
168 runtime->hw.rates |= codec_dai_drv->capture.rates;
169 }
170
171 ret = -EINVAL;
172 snd_pcm_limit_hw_rates(runtime);
173 if (!runtime->hw.rates) {
174 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
175 codec_dai->name, cpu_dai->name);
176 goto config_err;
177 }
178 if (!runtime->hw.formats) {
179 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
180 codec_dai->name, cpu_dai->name);
181 goto config_err;
182 }
183 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
184 runtime->hw.channels_min > runtime->hw.channels_max) {
185 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
186 codec_dai->name, cpu_dai->name);
187 goto config_err;
188 }
189
190 /* Symmetry only applies if we've already got an active stream. */
191 if (cpu_dai->active) {
192 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
193 if (ret != 0)
194 goto config_err;
195 }
196
197 if (codec_dai->active) {
198 ret = soc_pcm_apply_symmetry(substream, codec_dai);
199 if (ret != 0)
200 goto config_err;
201 }
202
203 pr_debug("asoc: %s <-> %s info:\n",
204 codec_dai->name, cpu_dai->name);
205 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
206 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
207 runtime->hw.channels_max);
208 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
209 runtime->hw.rate_max);
210
211 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
212 cpu_dai->playback_active++;
213 codec_dai->playback_active++;
214 } else {
215 cpu_dai->capture_active++;
216 codec_dai->capture_active++;
217 }
218 cpu_dai->active++;
219 codec_dai->active++;
220 rtd->codec->active++;
221 mutex_unlock(&rtd->pcm_mutex);
222 return 0;
223
224 config_err:
225 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
226 rtd->dai_link->ops->shutdown(substream);
227
228 machine_err:
229 if (codec_dai->driver->ops->shutdown)
230 codec_dai->driver->ops->shutdown(substream, codec_dai);
231
232 codec_dai_err:
233 if (platform->driver->ops && platform->driver->ops->close)
234 platform->driver->ops->close(substream);
235
236 platform_err:
237 if (cpu_dai->driver->ops->shutdown)
238 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
239 out:
240 mutex_unlock(&rtd->pcm_mutex);
241
242 pm_runtime_put(platform->dev);
243 pm_runtime_put(codec_dai->dev);
244 pm_runtime_put(cpu_dai->dev);
245
246 return ret;
247 }
248
249 /*
250 * Power down the audio subsystem pmdown_time msecs after close is called.
251 * This is to ensure there are no pops or clicks in between any music tracks
252 * due to DAPM power cycling.
253 */
254 static void close_delayed_work(struct work_struct *work)
255 {
256 struct snd_soc_pcm_runtime *rtd =
257 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
258 struct snd_soc_dai *codec_dai = rtd->codec_dai;
259
260 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
261
262 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
263 codec_dai->driver->playback.stream_name,
264 codec_dai->playback_active ? "active" : "inactive",
265 codec_dai->pop_wait ? "yes" : "no");
266
267 /* are we waiting on this codec DAI stream */
268 if (codec_dai->pop_wait == 1) {
269 codec_dai->pop_wait = 0;
270 snd_soc_dapm_stream_event(rtd,
271 codec_dai->driver->playback.stream_name,
272 SND_SOC_DAPM_STREAM_STOP);
273 }
274
275 mutex_unlock(&rtd->pcm_mutex);
276 }
277
278 /*
279 * Called by ALSA when a PCM substream is closed. Private data can be
280 * freed here. The cpu DAI, codec DAI, machine and platform are also
281 * shutdown.
282 */
283 static int soc_pcm_close(struct snd_pcm_substream *substream)
284 {
285 struct snd_soc_pcm_runtime *rtd = substream->private_data;
286 struct snd_soc_platform *platform = rtd->platform;
287 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
288 struct snd_soc_dai *codec_dai = rtd->codec_dai;
289 struct snd_soc_codec *codec = rtd->codec;
290
291 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
292
293 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
294 cpu_dai->playback_active--;
295 codec_dai->playback_active--;
296 } else {
297 cpu_dai->capture_active--;
298 codec_dai->capture_active--;
299 }
300
301 cpu_dai->active--;
302 codec_dai->active--;
303 codec->active--;
304
305 /* clear the corresponding DAIs rate when inactive */
306 if (!cpu_dai->active)
307 cpu_dai->rate = 0;
308
309 if (!codec_dai->active)
310 codec_dai->rate = 0;
311
312 /* Muting the DAC suppresses artifacts caused during digital
313 * shutdown, for example from stopping clocks.
314 */
315 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
316 snd_soc_dai_digital_mute(codec_dai, 1);
317
318 if (cpu_dai->driver->ops->shutdown)
319 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
320
321 if (codec_dai->driver->ops->shutdown)
322 codec_dai->driver->ops->shutdown(substream, codec_dai);
323
324 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
325 rtd->dai_link->ops->shutdown(substream);
326
327 if (platform->driver->ops && platform->driver->ops->close)
328 platform->driver->ops->close(substream);
329 cpu_dai->runtime = NULL;
330
331 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
332 if (codec->ignore_pmdown_time ||
333 rtd->dai_link->ignore_pmdown_time) {
334 /* powered down playback stream now */
335 snd_soc_dapm_stream_event(rtd,
336 codec_dai->driver->playback.stream_name,
337 SND_SOC_DAPM_STREAM_STOP);
338 } else {
339 /* start delayed pop wq here for playback streams */
340 codec_dai->pop_wait = 1;
341 schedule_delayed_work(&rtd->delayed_work,
342 msecs_to_jiffies(rtd->pmdown_time));
343 }
344 } else {
345 /* capture streams can be powered down now */
346 snd_soc_dapm_stream_event(rtd,
347 codec_dai->driver->capture.stream_name,
348 SND_SOC_DAPM_STREAM_STOP);
349 }
350
351 mutex_unlock(&rtd->pcm_mutex);
352
353 pm_runtime_put(platform->dev);
354 pm_runtime_put(codec_dai->dev);
355 pm_runtime_put(cpu_dai->dev);
356
357 return 0;
358 }
359
360 /*
361 * Called by ALSA when the PCM substream is prepared, can set format, sample
362 * rate, etc. This function is non atomic and can be called multiple times,
363 * it can refer to the runtime info.
364 */
365 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
366 {
367 struct snd_soc_pcm_runtime *rtd = substream->private_data;
368 struct snd_soc_platform *platform = rtd->platform;
369 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
370 struct snd_soc_dai *codec_dai = rtd->codec_dai;
371 int ret = 0;
372
373 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
374
375 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
376 ret = rtd->dai_link->ops->prepare(substream);
377 if (ret < 0) {
378 printk(KERN_ERR "asoc: machine prepare error\n");
379 goto out;
380 }
381 }
382
383 if (platform->driver->ops && platform->driver->ops->prepare) {
384 ret = platform->driver->ops->prepare(substream);
385 if (ret < 0) {
386 printk(KERN_ERR "asoc: platform prepare error\n");
387 goto out;
388 }
389 }
390
391 if (codec_dai->driver->ops->prepare) {
392 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
393 if (ret < 0) {
394 printk(KERN_ERR "asoc: codec DAI prepare error\n");
395 goto out;
396 }
397 }
398
399 if (cpu_dai->driver->ops->prepare) {
400 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
401 if (ret < 0) {
402 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
403 goto out;
404 }
405 }
406
407 /* cancel any delayed stream shutdown that is pending */
408 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
409 codec_dai->pop_wait) {
410 codec_dai->pop_wait = 0;
411 cancel_delayed_work(&rtd->delayed_work);
412 }
413
414 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
415 snd_soc_dapm_stream_event(rtd,
416 codec_dai->driver->playback.stream_name,
417 SND_SOC_DAPM_STREAM_START);
418 else
419 snd_soc_dapm_stream_event(rtd,
420 codec_dai->driver->capture.stream_name,
421 SND_SOC_DAPM_STREAM_START);
422
423 snd_soc_dai_digital_mute(codec_dai, 0);
424
425 out:
426 mutex_unlock(&rtd->pcm_mutex);
427 return ret;
428 }
429
430 /*
431 * Called by ALSA when the hardware params are set by application. This
432 * function can also be called multiple times and can allocate buffers
433 * (using snd_pcm_lib_* ). It's non-atomic.
434 */
435 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
436 struct snd_pcm_hw_params *params)
437 {
438 struct snd_soc_pcm_runtime *rtd = substream->private_data;
439 struct snd_soc_platform *platform = rtd->platform;
440 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
441 struct snd_soc_dai *codec_dai = rtd->codec_dai;
442 int ret = 0;
443
444 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
445
446 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
447 ret = rtd->dai_link->ops->hw_params(substream, params);
448 if (ret < 0) {
449 printk(KERN_ERR "asoc: machine hw_params failed\n");
450 goto out;
451 }
452 }
453
454 if (codec_dai->driver->ops->hw_params) {
455 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
456 if (ret < 0) {
457 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
458 codec_dai->name);
459 goto codec_err;
460 }
461 }
462
463 if (cpu_dai->driver->ops->hw_params) {
464 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
465 if (ret < 0) {
466 printk(KERN_ERR "asoc: interface %s hw params failed\n",
467 cpu_dai->name);
468 goto interface_err;
469 }
470 }
471
472 if (platform->driver->ops && platform->driver->ops->hw_params) {
473 ret = platform->driver->ops->hw_params(substream, params);
474 if (ret < 0) {
475 printk(KERN_ERR "asoc: platform %s hw params failed\n",
476 platform->name);
477 goto platform_err;
478 }
479 }
480
481 /* store the rate for each DAIs */
482 cpu_dai->rate = params_rate(params);
483 codec_dai->rate = params_rate(params);
484
485 out:
486 mutex_unlock(&rtd->pcm_mutex);
487 return ret;
488
489 platform_err:
490 if (cpu_dai->driver->ops->hw_free)
491 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
492
493 interface_err:
494 if (codec_dai->driver->ops->hw_free)
495 codec_dai->driver->ops->hw_free(substream, codec_dai);
496
497 codec_err:
498 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
499 rtd->dai_link->ops->hw_free(substream);
500
501 mutex_unlock(&rtd->pcm_mutex);
502 return ret;
503 }
504
505 /*
506 * Frees resources allocated by hw_params, can be called multiple times
507 */
508 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
509 {
510 struct snd_soc_pcm_runtime *rtd = substream->private_data;
511 struct snd_soc_platform *platform = rtd->platform;
512 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
513 struct snd_soc_dai *codec_dai = rtd->codec_dai;
514 struct snd_soc_codec *codec = rtd->codec;
515
516 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
517
518 /* apply codec digital mute */
519 if (!codec->active)
520 snd_soc_dai_digital_mute(codec_dai, 1);
521
522 /* free any machine hw params */
523 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
524 rtd->dai_link->ops->hw_free(substream);
525
526 /* free any DMA resources */
527 if (platform->driver->ops && platform->driver->ops->hw_free)
528 platform->driver->ops->hw_free(substream);
529
530 /* now free hw params for the DAIs */
531 if (codec_dai->driver->ops->hw_free)
532 codec_dai->driver->ops->hw_free(substream, codec_dai);
533
534 if (cpu_dai->driver->ops->hw_free)
535 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
536
537 mutex_unlock(&rtd->pcm_mutex);
538 return 0;
539 }
540
541 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
542 {
543 struct snd_soc_pcm_runtime *rtd = substream->private_data;
544 struct snd_soc_platform *platform = rtd->platform;
545 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
546 struct snd_soc_dai *codec_dai = rtd->codec_dai;
547 int ret;
548
549 if (codec_dai->driver->ops->trigger) {
550 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
551 if (ret < 0)
552 return ret;
553 }
554
555 if (platform->driver->ops && platform->driver->ops->trigger) {
556 ret = platform->driver->ops->trigger(substream, cmd);
557 if (ret < 0)
558 return ret;
559 }
560
561 if (cpu_dai->driver->ops->trigger) {
562 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
563 if (ret < 0)
564 return ret;
565 }
566 return 0;
567 }
568
569 /*
570 * soc level wrapper for pointer callback
571 * If cpu_dai, codec_dai, platform driver has the delay callback, than
572 * the runtime->delay will be updated accordingly.
573 */
574 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
575 {
576 struct snd_soc_pcm_runtime *rtd = substream->private_data;
577 struct snd_soc_platform *platform = rtd->platform;
578 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
579 struct snd_soc_dai *codec_dai = rtd->codec_dai;
580 struct snd_pcm_runtime *runtime = substream->runtime;
581 snd_pcm_uframes_t offset = 0;
582 snd_pcm_sframes_t delay = 0;
583
584 if (platform->driver->ops && platform->driver->ops->pointer)
585 offset = platform->driver->ops->pointer(substream);
586
587 if (cpu_dai->driver->ops->delay)
588 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
589
590 if (codec_dai->driver->ops->delay)
591 delay += codec_dai->driver->ops->delay(substream, codec_dai);
592
593 if (platform->driver->delay)
594 delay += platform->driver->delay(substream, codec_dai);
595
596 runtime->delay = delay;
597
598 return offset;
599 }
600
601 /* create a new pcm */
602 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
603 {
604 struct snd_soc_codec *codec = rtd->codec;
605 struct snd_soc_platform *platform = rtd->platform;
606 struct snd_soc_dai *codec_dai = rtd->codec_dai;
607 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
608 struct snd_pcm_ops *soc_pcm_ops = &rtd->ops;
609 struct snd_pcm *pcm;
610 char new_name[64];
611 int ret = 0, playback = 0, capture = 0;
612
613 soc_pcm_ops->open = soc_pcm_open;
614 soc_pcm_ops->close = soc_pcm_close;
615 soc_pcm_ops->hw_params = soc_pcm_hw_params;
616 soc_pcm_ops->hw_free = soc_pcm_hw_free;
617 soc_pcm_ops->prepare = soc_pcm_prepare;
618 soc_pcm_ops->trigger = soc_pcm_trigger;
619 soc_pcm_ops->pointer = soc_pcm_pointer;
620
621 /* check client and interface hw capabilities */
622 snprintf(new_name, sizeof(new_name), "%s %s-%d",
623 rtd->dai_link->stream_name, codec_dai->name, num);
624
625 if (codec_dai->driver->playback.channels_min)
626 playback = 1;
627 if (codec_dai->driver->capture.channels_min)
628 capture = 1;
629
630 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
631 ret = snd_pcm_new(rtd->card->snd_card, new_name,
632 num, playback, capture, &pcm);
633 if (ret < 0) {
634 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
635 return ret;
636 }
637
638 /* DAPM dai link stream work */
639 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
640
641 rtd->pcm = pcm;
642 pcm->private_data = rtd;
643 if (platform->driver->ops) {
644 soc_pcm_ops->mmap = platform->driver->ops->mmap;
645 soc_pcm_ops->pointer = platform->driver->ops->pointer;
646 soc_pcm_ops->ioctl = platform->driver->ops->ioctl;
647 soc_pcm_ops->copy = platform->driver->ops->copy;
648 soc_pcm_ops->silence = platform->driver->ops->silence;
649 soc_pcm_ops->ack = platform->driver->ops->ack;
650 soc_pcm_ops->page = platform->driver->ops->page;
651 }
652
653 if (playback)
654 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, soc_pcm_ops);
655
656 if (capture)
657 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, soc_pcm_ops);
658
659 if (platform->driver->pcm_new) {
660 ret = platform->driver->pcm_new(rtd);
661 if (ret < 0) {
662 pr_err("asoc: platform pcm constructor failed\n");
663 return ret;
664 }
665 }
666
667 pcm->private_free = platform->driver->pcm_free;
668 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
669 cpu_dai->name);
670 return ret;
671 }