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rtlwifi: Fix the usage of the wrong variable in usb.c
[linux/fpc-iii.git] / sound / soc / soc-pcm.c
blobee15337353fae5f2cf16f5ab86f94d13440dc6bd
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/slab.h>
23 #include <linux/workqueue.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/initval.h>
29
30 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
31 struct snd_soc_dai *soc_dai)
32 {
33 struct snd_soc_pcm_runtime *rtd = substream->private_data;
34 int ret;
35
36 if (!soc_dai->driver->symmetric_rates &&
37 !rtd->dai_link->symmetric_rates)
38 return 0;
39
40 /* This can happen if multiple streams are starting simultaneously -
41 * the second can need to get its constraints before the first has
42 * picked a rate. Complain and allow the application to carry on.
43 */
44 if (!soc_dai->rate) {
45 dev_warn(soc_dai->dev,
46 "Not enforcing symmetric_rates due to race\n");
47 return 0;
48 }
49
50 dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate);
51
52 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
53 SNDRV_PCM_HW_PARAM_RATE,
54 soc_dai->rate, soc_dai->rate);
55 if (ret < 0) {
56 dev_err(soc_dai->dev,
57 "Unable to apply rate symmetry constraint: %d\n", ret);
58 return ret;
59 }
60
61 return 0;
62 }
63
64 /*
65 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
66 * then initialized and any private data can be allocated. This also calls
67 * startup for the cpu DAI, platform, machine and codec DAI.
68 */
69 static int soc_pcm_open(struct snd_pcm_substream *substream)
70 {
71 struct snd_soc_pcm_runtime *rtd = substream->private_data;
72 struct snd_pcm_runtime *runtime = substream->runtime;
73 struct snd_soc_platform *platform = rtd->platform;
74 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
75 struct snd_soc_dai *codec_dai = rtd->codec_dai;
76 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
77 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
78 int ret = 0;
79
80 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
81
82 /* startup the audio subsystem */
83 if (cpu_dai->driver->ops->startup) {
84 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
85 if (ret < 0) {
86 printk(KERN_ERR "asoc: can't open interface %s\n",
87 cpu_dai->name);
88 goto out;
89 }
90 }
91
92 if (platform->driver->ops && platform->driver->ops->open) {
93 ret = platform->driver->ops->open(substream);
94 if (ret < 0) {
95 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
96 goto platform_err;
97 }
98 }
99
100 if (codec_dai->driver->ops->startup) {
101 ret = codec_dai->driver->ops->startup(substream, codec_dai);
102 if (ret < 0) {
103 printk(KERN_ERR "asoc: can't open codec %s\n",
104 codec_dai->name);
105 goto codec_dai_err;
106 }
107 }
108
109 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
110 ret = rtd->dai_link->ops->startup(substream);
111 if (ret < 0) {
112 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
113 goto machine_err;
114 }
115 }
116
117 /* Check that the codec and cpu DAIs are compatible */
118 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
119 runtime->hw.rate_min =
120 max(codec_dai_drv->playback.rate_min,
121 cpu_dai_drv->playback.rate_min);
122 runtime->hw.rate_max =
123 min(codec_dai_drv->playback.rate_max,
124 cpu_dai_drv->playback.rate_max);
125 runtime->hw.channels_min =
126 max(codec_dai_drv->playback.channels_min,
127 cpu_dai_drv->playback.channels_min);
128 runtime->hw.channels_max =
129 min(codec_dai_drv->playback.channels_max,
130 cpu_dai_drv->playback.channels_max);
131 runtime->hw.formats =
132 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
133 runtime->hw.rates =
134 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
135 if (codec_dai_drv->playback.rates
136 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
137 runtime->hw.rates |= cpu_dai_drv->playback.rates;
138 if (cpu_dai_drv->playback.rates
139 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
140 runtime->hw.rates |= codec_dai_drv->playback.rates;
141 } else {
142 runtime->hw.rate_min =
143 max(codec_dai_drv->capture.rate_min,
144 cpu_dai_drv->capture.rate_min);
145 runtime->hw.rate_max =
146 min(codec_dai_drv->capture.rate_max,
147 cpu_dai_drv->capture.rate_max);
148 runtime->hw.channels_min =
149 max(codec_dai_drv->capture.channels_min,
150 cpu_dai_drv->capture.channels_min);
151 runtime->hw.channels_max =
152 min(codec_dai_drv->capture.channels_max,
153 cpu_dai_drv->capture.channels_max);
154 runtime->hw.formats =
155 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
156 runtime->hw.rates =
157 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
158 if (codec_dai_drv->capture.rates
159 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
160 runtime->hw.rates |= cpu_dai_drv->capture.rates;
161 if (cpu_dai_drv->capture.rates
162 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
163 runtime->hw.rates |= codec_dai_drv->capture.rates;
164 }
165
166 ret = -EINVAL;
167 snd_pcm_limit_hw_rates(runtime);
168 if (!runtime->hw.rates) {
169 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
170 codec_dai->name, cpu_dai->name);
171 goto config_err;
172 }
173 if (!runtime->hw.formats) {
174 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
175 codec_dai->name, cpu_dai->name);
176 goto config_err;
177 }
178 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
179 runtime->hw.channels_min > runtime->hw.channels_max) {
180 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
181 codec_dai->name, cpu_dai->name);
182 goto config_err;
183 }
184
185 /* Symmetry only applies if we've already got an active stream. */
186 if (cpu_dai->active) {
187 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
188 if (ret != 0)
189 goto config_err;
190 }
191
192 if (codec_dai->active) {
193 ret = soc_pcm_apply_symmetry(substream, codec_dai);
194 if (ret != 0)
195 goto config_err;
196 }
197
198 pr_debug("asoc: %s <-> %s info:\n",
199 codec_dai->name, cpu_dai->name);
200 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
201 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
202 runtime->hw.channels_max);
203 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
204 runtime->hw.rate_max);
205
206 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
207 cpu_dai->playback_active++;
208 codec_dai->playback_active++;
209 } else {
210 cpu_dai->capture_active++;
211 codec_dai->capture_active++;
212 }
213 cpu_dai->active++;
214 codec_dai->active++;
215 rtd->codec->active++;
216 mutex_unlock(&rtd->pcm_mutex);
217 return 0;
218
219 config_err:
220 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
221 rtd->dai_link->ops->shutdown(substream);
222
223 machine_err:
224 if (codec_dai->driver->ops->shutdown)
225 codec_dai->driver->ops->shutdown(substream, codec_dai);
226
227 codec_dai_err:
228 if (platform->driver->ops && platform->driver->ops->close)
229 platform->driver->ops->close(substream);
230
231 platform_err:
232 if (cpu_dai->driver->ops->shutdown)
233 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
234 out:
235 mutex_unlock(&rtd->pcm_mutex);
236 return ret;
237 }
238
239 /*
240 * Power down the audio subsystem pmdown_time msecs after close is called.
241 * This is to ensure there are no pops or clicks in between any music tracks
242 * due to DAPM power cycling.
243 */
244 static void close_delayed_work(struct work_struct *work)
245 {
246 struct snd_soc_pcm_runtime *rtd =
247 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
248 struct snd_soc_dai *codec_dai = rtd->codec_dai;
249
250 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
251
252 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
253 codec_dai->driver->playback.stream_name,
254 codec_dai->playback_active ? "active" : "inactive",
255 codec_dai->pop_wait ? "yes" : "no");
256
257 /* are we waiting on this codec DAI stream */
258 if (codec_dai->pop_wait == 1) {
259 codec_dai->pop_wait = 0;
260 snd_soc_dapm_stream_event(rtd,
261 codec_dai->driver->playback.stream_name,
262 SND_SOC_DAPM_STREAM_STOP);
263 }
264
265 mutex_unlock(&rtd->pcm_mutex);
266 }
267
268 /*
269 * Called by ALSA when a PCM substream is closed. Private data can be
270 * freed here. The cpu DAI, codec DAI, machine and platform are also
271 * shutdown.
272 */
273 static int soc_pcm_close(struct snd_pcm_substream *substream)
274 {
275 struct snd_soc_pcm_runtime *rtd = substream->private_data;
276 struct snd_soc_platform *platform = rtd->platform;
277 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
278 struct snd_soc_dai *codec_dai = rtd->codec_dai;
279 struct snd_soc_codec *codec = rtd->codec;
280
281 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
282
283 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
284 cpu_dai->playback_active--;
285 codec_dai->playback_active--;
286 } else {
287 cpu_dai->capture_active--;
288 codec_dai->capture_active--;
289 }
290
291 cpu_dai->active--;
292 codec_dai->active--;
293 codec->active--;
294
295 /* clear the corresponding DAIs rate when inactive */
296 if (!cpu_dai->active)
297 cpu_dai->rate = 0;
298
299 if (!codec_dai->active)
300 codec_dai->rate = 0;
301
302 /* Muting the DAC suppresses artifacts caused during digital
303 * shutdown, for example from stopping clocks.
304 */
305 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
306 snd_soc_dai_digital_mute(codec_dai, 1);
307
308 if (cpu_dai->driver->ops->shutdown)
309 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
310
311 if (codec_dai->driver->ops->shutdown)
312 codec_dai->driver->ops->shutdown(substream, codec_dai);
313
314 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
315 rtd->dai_link->ops->shutdown(substream);
316
317 if (platform->driver->ops && platform->driver->ops->close)
318 platform->driver->ops->close(substream);
319 cpu_dai->runtime = NULL;
320
321 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
322 if (unlikely(codec->ignore_pmdown_time)) {
323 /* powered down playback stream now */
324 snd_soc_dapm_stream_event(rtd,
325 codec_dai->driver->playback.stream_name,
326 SND_SOC_DAPM_STREAM_STOP);
327 } else {
328 /* start delayed pop wq here for playback streams */
329 codec_dai->pop_wait = 1;
330 schedule_delayed_work(&rtd->delayed_work,
331 msecs_to_jiffies(rtd->pmdown_time));
332 }
333 } else {
334 /* capture streams can be powered down now */
335 snd_soc_dapm_stream_event(rtd,
336 codec_dai->driver->capture.stream_name,
337 SND_SOC_DAPM_STREAM_STOP);
338 }
339
340 mutex_unlock(&rtd->pcm_mutex);
341 return 0;
342 }
343
344 /*
345 * Called by ALSA when the PCM substream is prepared, can set format, sample
346 * rate, etc. This function is non atomic and can be called multiple times,
347 * it can refer to the runtime info.
348 */
349 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
350 {
351 struct snd_soc_pcm_runtime *rtd = substream->private_data;
352 struct snd_soc_platform *platform = rtd->platform;
353 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
354 struct snd_soc_dai *codec_dai = rtd->codec_dai;
355 int ret = 0;
356
357 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
358
359 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
360 ret = rtd->dai_link->ops->prepare(substream);
361 if (ret < 0) {
362 printk(KERN_ERR "asoc: machine prepare error\n");
363 goto out;
364 }
365 }
366
367 if (platform->driver->ops && platform->driver->ops->prepare) {
368 ret = platform->driver->ops->prepare(substream);
369 if (ret < 0) {
370 printk(KERN_ERR "asoc: platform prepare error\n");
371 goto out;
372 }
373 }
374
375 if (codec_dai->driver->ops->prepare) {
376 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
377 if (ret < 0) {
378 printk(KERN_ERR "asoc: codec DAI prepare error\n");
379 goto out;
380 }
381 }
382
383 if (cpu_dai->driver->ops->prepare) {
384 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
385 if (ret < 0) {
386 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
387 goto out;
388 }
389 }
390
391 /* cancel any delayed stream shutdown that is pending */
392 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
393 codec_dai->pop_wait) {
394 codec_dai->pop_wait = 0;
395 cancel_delayed_work(&rtd->delayed_work);
396 }
397
398 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
399 snd_soc_dapm_stream_event(rtd,
400 codec_dai->driver->playback.stream_name,
401 SND_SOC_DAPM_STREAM_START);
402 else
403 snd_soc_dapm_stream_event(rtd,
404 codec_dai->driver->capture.stream_name,
405 SND_SOC_DAPM_STREAM_START);
406
407 snd_soc_dai_digital_mute(codec_dai, 0);
408
409 out:
410 mutex_unlock(&rtd->pcm_mutex);
411 return ret;
412 }
413
414 /*
415 * Called by ALSA when the hardware params are set by application. This
416 * function can also be called multiple times and can allocate buffers
417 * (using snd_pcm_lib_* ). It's non-atomic.
418 */
419 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
420 struct snd_pcm_hw_params *params)
421 {
422 struct snd_soc_pcm_runtime *rtd = substream->private_data;
423 struct snd_soc_platform *platform = rtd->platform;
424 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
425 struct snd_soc_dai *codec_dai = rtd->codec_dai;
426 int ret = 0;
427
428 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
429
430 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
431 ret = rtd->dai_link->ops->hw_params(substream, params);
432 if (ret < 0) {
433 printk(KERN_ERR "asoc: machine hw_params failed\n");
434 goto out;
435 }
436 }
437
438 if (codec_dai->driver->ops->hw_params) {
439 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
440 if (ret < 0) {
441 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
442 codec_dai->name);
443 goto codec_err;
444 }
445 }
446
447 if (cpu_dai->driver->ops->hw_params) {
448 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
449 if (ret < 0) {
450 printk(KERN_ERR "asoc: interface %s hw params failed\n",
451 cpu_dai->name);
452 goto interface_err;
453 }
454 }
455
456 if (platform->driver->ops && platform->driver->ops->hw_params) {
457 ret = platform->driver->ops->hw_params(substream, params);
458 if (ret < 0) {
459 printk(KERN_ERR "asoc: platform %s hw params failed\n",
460 platform->name);
461 goto platform_err;
462 }
463 }
464
465 /* store the rate for each DAIs */
466 cpu_dai->rate = params_rate(params);
467 codec_dai->rate = params_rate(params);
468
469 out:
470 mutex_unlock(&rtd->pcm_mutex);
471 return ret;
472
473 platform_err:
474 if (cpu_dai->driver->ops->hw_free)
475 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
476
477 interface_err:
478 if (codec_dai->driver->ops->hw_free)
479 codec_dai->driver->ops->hw_free(substream, codec_dai);
480
481 codec_err:
482 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
483 rtd->dai_link->ops->hw_free(substream);
484
485 mutex_unlock(&rtd->pcm_mutex);
486 return ret;
487 }
488
489 /*
490 * Frees resources allocated by hw_params, can be called multiple times
491 */
492 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
493 {
494 struct snd_soc_pcm_runtime *rtd = substream->private_data;
495 struct snd_soc_platform *platform = rtd->platform;
496 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
497 struct snd_soc_dai *codec_dai = rtd->codec_dai;
498 struct snd_soc_codec *codec = rtd->codec;
499
500 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
501
502 /* apply codec digital mute */
503 if (!codec->active)
504 snd_soc_dai_digital_mute(codec_dai, 1);
505
506 /* free any machine hw params */
507 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
508 rtd->dai_link->ops->hw_free(substream);
509
510 /* free any DMA resources */
511 if (platform->driver->ops && platform->driver->ops->hw_free)
512 platform->driver->ops->hw_free(substream);
513
514 /* now free hw params for the DAIs */
515 if (codec_dai->driver->ops->hw_free)
516 codec_dai->driver->ops->hw_free(substream, codec_dai);
517
518 if (cpu_dai->driver->ops->hw_free)
519 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
520
521 mutex_unlock(&rtd->pcm_mutex);
522 return 0;
523 }
524
525 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
526 {
527 struct snd_soc_pcm_runtime *rtd = substream->private_data;
528 struct snd_soc_platform *platform = rtd->platform;
529 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
530 struct snd_soc_dai *codec_dai = rtd->codec_dai;
531 int ret;
532
533 if (codec_dai->driver->ops->trigger) {
534 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
535 if (ret < 0)
536 return ret;
537 }
538
539 if (platform->driver->ops && platform->driver->ops->trigger) {
540 ret = platform->driver->ops->trigger(substream, cmd);
541 if (ret < 0)
542 return ret;
543 }
544
545 if (cpu_dai->driver->ops->trigger) {
546 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
547 if (ret < 0)
548 return ret;
549 }
550 return 0;
551 }
552
553 /*
554 * soc level wrapper for pointer callback
555 * If cpu_dai, codec_dai, platform driver has the delay callback, than
556 * the runtime->delay will be updated accordingly.
557 */
558 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
559 {
560 struct snd_soc_pcm_runtime *rtd = substream->private_data;
561 struct snd_soc_platform *platform = rtd->platform;
562 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
563 struct snd_soc_dai *codec_dai = rtd->codec_dai;
564 struct snd_pcm_runtime *runtime = substream->runtime;
565 snd_pcm_uframes_t offset = 0;
566 snd_pcm_sframes_t delay = 0;
567
568 if (platform->driver->ops && platform->driver->ops->pointer)
569 offset = platform->driver->ops->pointer(substream);
570
571 if (cpu_dai->driver->ops->delay)
572 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
573
574 if (codec_dai->driver->ops->delay)
575 delay += codec_dai->driver->ops->delay(substream, codec_dai);
576
577 if (platform->driver->delay)
578 delay += platform->driver->delay(substream, codec_dai);
579
580 runtime->delay = delay;
581
582 return offset;
583 }
584
585 /* ASoC PCM operations */
586 static struct snd_pcm_ops soc_pcm_ops = {
587 .open = soc_pcm_open,
588 .close = soc_pcm_close,
589 .hw_params = soc_pcm_hw_params,
590 .hw_free = soc_pcm_hw_free,
591 .prepare = soc_pcm_prepare,
592 .trigger = soc_pcm_trigger,
593 .pointer = soc_pcm_pointer,
594 };
595
596 /* create a new pcm */
597 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
598 {
599 struct snd_soc_codec *codec = rtd->codec;
600 struct snd_soc_platform *platform = rtd->platform;
601 struct snd_soc_dai *codec_dai = rtd->codec_dai;
602 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
603 struct snd_pcm *pcm;
604 char new_name[64];
605 int ret = 0, playback = 0, capture = 0;
606
607 /* check client and interface hw capabilities */
608 snprintf(new_name, sizeof(new_name), "%s %s-%d",
609 rtd->dai_link->stream_name, codec_dai->name, num);
610
611 if (codec_dai->driver->playback.channels_min)
612 playback = 1;
613 if (codec_dai->driver->capture.channels_min)
614 capture = 1;
615
616 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
617 ret = snd_pcm_new(rtd->card->snd_card, new_name,
618 num, playback, capture, &pcm);
619 if (ret < 0) {
620 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
621 return ret;
622 }
623
624 /* DAPM dai link stream work */
625 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
626
627 rtd->pcm = pcm;
628 pcm->private_data = rtd;
629 if (platform->driver->ops) {
630 soc_pcm_ops.mmap = platform->driver->ops->mmap;
631 soc_pcm_ops.pointer = platform->driver->ops->pointer;
632 soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
633 soc_pcm_ops.copy = platform->driver->ops->copy;
634 soc_pcm_ops.silence = platform->driver->ops->silence;
635 soc_pcm_ops.ack = platform->driver->ops->ack;
636 soc_pcm_ops.page = platform->driver->ops->page;
637 }
638
639 if (playback)
640 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
641
642 if (capture)
643 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
644
645 if (platform->driver->pcm_new) {
646 ret = platform->driver->pcm_new(rtd);
647 if (ret < 0) {
648 pr_err("asoc: platform pcm constructor failed\n");
649 return ret;
650 }
651 }
652
653 pcm->private_free = platform->driver->pcm_free;
654 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
655 cpu_dai->name);
656 return ret;
657 }
Linux with added FPC-III support