Commit | Line | Data |
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ddee627c LG |
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 DEFINE_MUTEX(pcm_mutex); | |
31 | ||
32 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) | |
33 | { | |
34 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
35 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
36 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
37 | int ret; | |
38 | ||
39 | if (!codec_dai->driver->symmetric_rates && | |
40 | !cpu_dai->driver->symmetric_rates && | |
41 | !rtd->dai_link->symmetric_rates) | |
42 | return 0; | |
43 | ||
44 | /* This can happen if multiple streams are starting simultaneously - | |
45 | * the second can need to get its constraints before the first has | |
46 | * picked a rate. Complain and allow the application to carry on. | |
47 | */ | |
48 | if (!rtd->rate) { | |
49 | dev_warn(&rtd->dev, | |
50 | "Not enforcing symmetric_rates due to race\n"); | |
51 | return 0; | |
52 | } | |
53 | ||
54 | dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate); | |
55 | ||
56 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
57 | SNDRV_PCM_HW_PARAM_RATE, | |
58 | rtd->rate, rtd->rate); | |
59 | if (ret < 0) { | |
60 | dev_err(&rtd->dev, | |
61 | "Unable to apply rate symmetry constraint: %d\n", ret); | |
62 | return ret; | |
63 | } | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | /* | |
69 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
70 | * then initialized and any private data can be allocated. This also calls | |
71 | * startup for the cpu DAI, platform, machine and codec DAI. | |
72 | */ | |
73 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
74 | { | |
75 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
76 | struct snd_pcm_runtime *runtime = substream->runtime; | |
77 | struct snd_soc_platform *platform = rtd->platform; | |
78 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
79 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
80 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
81 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
82 | int ret = 0; | |
83 | ||
b8c0dab9 | 84 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
85 | |
86 | /* startup the audio subsystem */ | |
87 | if (cpu_dai->driver->ops->startup) { | |
88 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); | |
89 | if (ret < 0) { | |
90 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
91 | cpu_dai->name); | |
92 | goto out; | |
93 | } | |
94 | } | |
95 | ||
96 | if (platform->driver->ops && platform->driver->ops->open) { | |
97 | ret = platform->driver->ops->open(substream); | |
98 | if (ret < 0) { | |
99 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
100 | goto platform_err; | |
101 | } | |
102 | } | |
103 | ||
104 | if (codec_dai->driver->ops->startup) { | |
105 | ret = codec_dai->driver->ops->startup(substream, codec_dai); | |
106 | if (ret < 0) { | |
107 | printk(KERN_ERR "asoc: can't open codec %s\n", | |
108 | codec_dai->name); | |
109 | goto codec_dai_err; | |
110 | } | |
111 | } | |
112 | ||
113 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
114 | ret = rtd->dai_link->ops->startup(substream); | |
115 | if (ret < 0) { | |
116 | printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name); | |
117 | goto machine_err; | |
118 | } | |
119 | } | |
120 | ||
121 | /* Check that the codec and cpu DAIs are compatible */ | |
122 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
123 | runtime->hw.rate_min = | |
124 | max(codec_dai_drv->playback.rate_min, | |
125 | cpu_dai_drv->playback.rate_min); | |
126 | runtime->hw.rate_max = | |
127 | min(codec_dai_drv->playback.rate_max, | |
128 | cpu_dai_drv->playback.rate_max); | |
129 | runtime->hw.channels_min = | |
130 | max(codec_dai_drv->playback.channels_min, | |
131 | cpu_dai_drv->playback.channels_min); | |
132 | runtime->hw.channels_max = | |
133 | min(codec_dai_drv->playback.channels_max, | |
134 | cpu_dai_drv->playback.channels_max); | |
135 | runtime->hw.formats = | |
136 | codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; | |
137 | runtime->hw.rates = | |
138 | codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; | |
139 | if (codec_dai_drv->playback.rates | |
140 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
141 | runtime->hw.rates |= cpu_dai_drv->playback.rates; | |
142 | if (cpu_dai_drv->playback.rates | |
143 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
144 | runtime->hw.rates |= codec_dai_drv->playback.rates; | |
145 | } else { | |
146 | runtime->hw.rate_min = | |
147 | max(codec_dai_drv->capture.rate_min, | |
148 | cpu_dai_drv->capture.rate_min); | |
149 | runtime->hw.rate_max = | |
150 | min(codec_dai_drv->capture.rate_max, | |
151 | cpu_dai_drv->capture.rate_max); | |
152 | runtime->hw.channels_min = | |
153 | max(codec_dai_drv->capture.channels_min, | |
154 | cpu_dai_drv->capture.channels_min); | |
155 | runtime->hw.channels_max = | |
156 | min(codec_dai_drv->capture.channels_max, | |
157 | cpu_dai_drv->capture.channels_max); | |
158 | runtime->hw.formats = | |
159 | codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; | |
160 | runtime->hw.rates = | |
161 | codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; | |
162 | if (codec_dai_drv->capture.rates | |
163 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
164 | runtime->hw.rates |= cpu_dai_drv->capture.rates; | |
165 | if (cpu_dai_drv->capture.rates | |
166 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
167 | runtime->hw.rates |= codec_dai_drv->capture.rates; | |
168 | } | |
169 | ||
170 | ret = -EINVAL; | |
171 | snd_pcm_limit_hw_rates(runtime); | |
172 | if (!runtime->hw.rates) { | |
173 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
174 | codec_dai->name, cpu_dai->name); | |
175 | goto config_err; | |
176 | } | |
177 | if (!runtime->hw.formats) { | |
178 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
179 | codec_dai->name, cpu_dai->name); | |
180 | goto config_err; | |
181 | } | |
182 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
183 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
184 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
185 | codec_dai->name, cpu_dai->name); | |
186 | goto config_err; | |
187 | } | |
188 | ||
189 | /* Symmetry only applies if we've already got an active stream. */ | |
190 | if (cpu_dai->active || codec_dai->active) { | |
191 | ret = soc_pcm_apply_symmetry(substream); | |
192 | if (ret != 0) | |
193 | goto config_err; | |
194 | } | |
195 | ||
196 | pr_debug("asoc: %s <-> %s info:\n", | |
197 | codec_dai->name, cpu_dai->name); | |
198 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
199 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
200 | runtime->hw.channels_max); | |
201 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
202 | runtime->hw.rate_max); | |
203 | ||
204 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
205 | cpu_dai->playback_active++; | |
206 | codec_dai->playback_active++; | |
207 | } else { | |
208 | cpu_dai->capture_active++; | |
209 | codec_dai->capture_active++; | |
210 | } | |
211 | cpu_dai->active++; | |
212 | codec_dai->active++; | |
213 | rtd->codec->active++; | |
b8c0dab9 | 214 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
215 | return 0; |
216 | ||
217 | config_err: | |
218 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
219 | rtd->dai_link->ops->shutdown(substream); | |
220 | ||
221 | machine_err: | |
222 | if (codec_dai->driver->ops->shutdown) | |
223 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
224 | ||
225 | codec_dai_err: | |
226 | if (platform->driver->ops && platform->driver->ops->close) | |
227 | platform->driver->ops->close(substream); | |
228 | ||
229 | platform_err: | |
230 | if (cpu_dai->driver->ops->shutdown) | |
231 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
232 | out: | |
b8c0dab9 | 233 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
234 | return ret; |
235 | } | |
236 | ||
237 | /* | |
238 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
239 | * This is to ensure there are no pops or clicks in between any music tracks | |
240 | * due to DAPM power cycling. | |
241 | */ | |
242 | static void close_delayed_work(struct work_struct *work) | |
243 | { | |
244 | struct snd_soc_pcm_runtime *rtd = | |
245 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
246 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
247 | ||
b8c0dab9 | 248 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
249 | |
250 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", | |
251 | codec_dai->driver->playback.stream_name, | |
252 | codec_dai->playback_active ? "active" : "inactive", | |
253 | codec_dai->pop_wait ? "yes" : "no"); | |
254 | ||
255 | /* are we waiting on this codec DAI stream */ | |
256 | if (codec_dai->pop_wait == 1) { | |
257 | codec_dai->pop_wait = 0; | |
258 | snd_soc_dapm_stream_event(rtd, | |
259 | codec_dai->driver->playback.stream_name, | |
260 | SND_SOC_DAPM_STREAM_STOP); | |
261 | } | |
262 | ||
b8c0dab9 | 263 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
264 | } |
265 | ||
266 | /* | |
267 | * Called by ALSA when a PCM substream is closed. Private data can be | |
268 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
269 | * shutdown. | |
270 | */ | |
91d5e6b4 | 271 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
272 | { |
273 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
274 | struct snd_soc_platform *platform = rtd->platform; | |
275 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
276 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
277 | struct snd_soc_codec *codec = rtd->codec; | |
278 | ||
b8c0dab9 | 279 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
280 | |
281 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
282 | cpu_dai->playback_active--; | |
283 | codec_dai->playback_active--; | |
284 | } else { | |
285 | cpu_dai->capture_active--; | |
286 | codec_dai->capture_active--; | |
287 | } | |
288 | ||
289 | cpu_dai->active--; | |
290 | codec_dai->active--; | |
291 | codec->active--; | |
292 | ||
25b76791 SH |
293 | if (!cpu_dai->active && !codec_dai->active) |
294 | rtd->rate = 0; | |
295 | ||
ddee627c LG |
296 | /* Muting the DAC suppresses artifacts caused during digital |
297 | * shutdown, for example from stopping clocks. | |
298 | */ | |
299 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
300 | snd_soc_dai_digital_mute(codec_dai, 1); | |
301 | ||
302 | if (cpu_dai->driver->ops->shutdown) | |
303 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
304 | ||
305 | if (codec_dai->driver->ops->shutdown) | |
306 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
307 | ||
308 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
309 | rtd->dai_link->ops->shutdown(substream); | |
310 | ||
311 | if (platform->driver->ops && platform->driver->ops->close) | |
312 | platform->driver->ops->close(substream); | |
313 | cpu_dai->runtime = NULL; | |
314 | ||
315 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
316 | /* start delayed pop wq here for playback streams */ | |
317 | codec_dai->pop_wait = 1; | |
318 | schedule_delayed_work(&rtd->delayed_work, | |
319 | msecs_to_jiffies(rtd->pmdown_time)); | |
320 | } else { | |
321 | /* capture streams can be powered down now */ | |
322 | snd_soc_dapm_stream_event(rtd, | |
323 | codec_dai->driver->capture.stream_name, | |
324 | SND_SOC_DAPM_STREAM_STOP); | |
325 | } | |
326 | ||
b8c0dab9 | 327 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
328 | return 0; |
329 | } | |
330 | ||
331 | /* | |
332 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
333 | * rate, etc. This function is non atomic and can be called multiple times, | |
334 | * it can refer to the runtime info. | |
335 | */ | |
336 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
337 | { | |
338 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
339 | struct snd_soc_platform *platform = rtd->platform; | |
340 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
341 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
342 | int ret = 0; | |
343 | ||
b8c0dab9 | 344 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
345 | |
346 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
347 | ret = rtd->dai_link->ops->prepare(substream); | |
348 | if (ret < 0) { | |
349 | printk(KERN_ERR "asoc: machine prepare error\n"); | |
350 | goto out; | |
351 | } | |
352 | } | |
353 | ||
354 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
355 | ret = platform->driver->ops->prepare(substream); | |
356 | if (ret < 0) { | |
357 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
358 | goto out; | |
359 | } | |
360 | } | |
361 | ||
362 | if (codec_dai->driver->ops->prepare) { | |
363 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); | |
364 | if (ret < 0) { | |
365 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
366 | goto out; | |
367 | } | |
368 | } | |
369 | ||
370 | if (cpu_dai->driver->ops->prepare) { | |
371 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); | |
372 | if (ret < 0) { | |
373 | printk(KERN_ERR "asoc: cpu DAI prepare error\n"); | |
374 | goto out; | |
375 | } | |
376 | } | |
377 | ||
378 | /* cancel any delayed stream shutdown that is pending */ | |
379 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
380 | codec_dai->pop_wait) { | |
381 | codec_dai->pop_wait = 0; | |
382 | cancel_delayed_work(&rtd->delayed_work); | |
383 | } | |
384 | ||
385 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
386 | snd_soc_dapm_stream_event(rtd, | |
387 | codec_dai->driver->playback.stream_name, | |
388 | SND_SOC_DAPM_STREAM_START); | |
389 | else | |
390 | snd_soc_dapm_stream_event(rtd, | |
391 | codec_dai->driver->capture.stream_name, | |
392 | SND_SOC_DAPM_STREAM_START); | |
393 | ||
394 | snd_soc_dai_digital_mute(codec_dai, 0); | |
395 | ||
396 | out: | |
b8c0dab9 | 397 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
398 | return ret; |
399 | } | |
400 | ||
401 | /* | |
402 | * Called by ALSA when the hardware params are set by application. This | |
403 | * function can also be called multiple times and can allocate buffers | |
404 | * (using snd_pcm_lib_* ). It's non-atomic. | |
405 | */ | |
406 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
407 | struct snd_pcm_hw_params *params) | |
408 | { | |
409 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
410 | struct snd_soc_platform *platform = rtd->platform; | |
411 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
412 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
413 | int ret = 0; | |
414 | ||
b8c0dab9 | 415 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
416 | |
417 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
418 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
419 | if (ret < 0) { | |
420 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
421 | goto out; | |
422 | } | |
423 | } | |
424 | ||
425 | if (codec_dai->driver->ops->hw_params) { | |
426 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); | |
427 | if (ret < 0) { | |
428 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
429 | codec_dai->name); | |
430 | goto codec_err; | |
431 | } | |
432 | } | |
433 | ||
434 | if (cpu_dai->driver->ops->hw_params) { | |
435 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); | |
436 | if (ret < 0) { | |
437 | printk(KERN_ERR "asoc: interface %s hw params failed\n", | |
438 | cpu_dai->name); | |
439 | goto interface_err; | |
440 | } | |
441 | } | |
442 | ||
443 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
444 | ret = platform->driver->ops->hw_params(substream, params); | |
445 | if (ret < 0) { | |
446 | printk(KERN_ERR "asoc: platform %s hw params failed\n", | |
447 | platform->name); | |
448 | goto platform_err; | |
449 | } | |
450 | } | |
451 | ||
452 | rtd->rate = params_rate(params); | |
453 | ||
454 | out: | |
b8c0dab9 | 455 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
456 | return ret; |
457 | ||
458 | platform_err: | |
459 | if (cpu_dai->driver->ops->hw_free) | |
460 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
461 | ||
462 | interface_err: | |
463 | if (codec_dai->driver->ops->hw_free) | |
464 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
465 | ||
466 | codec_err: | |
467 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
468 | rtd->dai_link->ops->hw_free(substream); | |
469 | ||
b8c0dab9 | 470 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
471 | return ret; |
472 | } | |
473 | ||
474 | /* | |
475 | * Frees resources allocated by hw_params, can be called multiple times | |
476 | */ | |
477 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
478 | { | |
479 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
480 | struct snd_soc_platform *platform = rtd->platform; | |
481 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
482 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
483 | struct snd_soc_codec *codec = rtd->codec; | |
484 | ||
b8c0dab9 | 485 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
486 | |
487 | /* apply codec digital mute */ | |
488 | if (!codec->active) | |
489 | snd_soc_dai_digital_mute(codec_dai, 1); | |
490 | ||
491 | /* free any machine hw params */ | |
492 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
493 | rtd->dai_link->ops->hw_free(substream); | |
494 | ||
495 | /* free any DMA resources */ | |
496 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
497 | platform->driver->ops->hw_free(substream); | |
498 | ||
499 | /* now free hw params for the DAIs */ | |
500 | if (codec_dai->driver->ops->hw_free) | |
501 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
502 | ||
503 | if (cpu_dai->driver->ops->hw_free) | |
504 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
505 | ||
b8c0dab9 | 506 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
507 | return 0; |
508 | } | |
509 | ||
510 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
511 | { | |
512 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
513 | struct snd_soc_platform *platform = rtd->platform; | |
514 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
515 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
516 | int ret; | |
517 | ||
518 | if (codec_dai->driver->ops->trigger) { | |
519 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); | |
520 | if (ret < 0) | |
521 | return ret; | |
522 | } | |
523 | ||
524 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
525 | ret = platform->driver->ops->trigger(substream, cmd); | |
526 | if (ret < 0) | |
527 | return ret; | |
528 | } | |
529 | ||
530 | if (cpu_dai->driver->ops->trigger) { | |
531 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); | |
532 | if (ret < 0) | |
533 | return ret; | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | ||
538 | /* | |
539 | * soc level wrapper for pointer callback | |
540 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
541 | * the runtime->delay will be updated accordingly. | |
542 | */ | |
543 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
544 | { | |
545 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
546 | struct snd_soc_platform *platform = rtd->platform; | |
547 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
548 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
549 | struct snd_pcm_runtime *runtime = substream->runtime; | |
550 | snd_pcm_uframes_t offset = 0; | |
551 | snd_pcm_sframes_t delay = 0; | |
552 | ||
553 | if (platform->driver->ops && platform->driver->ops->pointer) | |
554 | offset = platform->driver->ops->pointer(substream); | |
555 | ||
556 | if (cpu_dai->driver->ops->delay) | |
557 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
558 | ||
559 | if (codec_dai->driver->ops->delay) | |
560 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
561 | ||
562 | if (platform->driver->delay) | |
563 | delay += platform->driver->delay(substream, codec_dai); | |
564 | ||
565 | runtime->delay = delay; | |
566 | ||
567 | return offset; | |
568 | } | |
569 | ||
570 | /* ASoC PCM operations */ | |
571 | static struct snd_pcm_ops soc_pcm_ops = { | |
572 | .open = soc_pcm_open, | |
91d5e6b4 | 573 | .close = soc_pcm_close, |
ddee627c LG |
574 | .hw_params = soc_pcm_hw_params, |
575 | .hw_free = soc_pcm_hw_free, | |
576 | .prepare = soc_pcm_prepare, | |
577 | .trigger = soc_pcm_trigger, | |
578 | .pointer = soc_pcm_pointer, | |
579 | }; | |
580 | ||
581 | /* create a new pcm */ | |
582 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
583 | { | |
584 | struct snd_soc_codec *codec = rtd->codec; | |
585 | struct snd_soc_platform *platform = rtd->platform; | |
586 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
587 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
588 | struct snd_pcm *pcm; | |
589 | char new_name[64]; | |
590 | int ret = 0, playback = 0, capture = 0; | |
591 | ||
592 | /* check client and interface hw capabilities */ | |
593 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
594 | rtd->dai_link->stream_name, codec_dai->name, num); | |
595 | ||
596 | if (codec_dai->driver->playback.channels_min) | |
597 | playback = 1; | |
598 | if (codec_dai->driver->capture.channels_min) | |
599 | capture = 1; | |
600 | ||
601 | dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name); | |
602 | ret = snd_pcm_new(rtd->card->snd_card, new_name, | |
603 | num, playback, capture, &pcm); | |
604 | if (ret < 0) { | |
605 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
606 | return ret; | |
607 | } | |
608 | ||
609 | /* DAPM dai link stream work */ | |
610 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
611 | ||
612 | rtd->pcm = pcm; | |
613 | pcm->private_data = rtd; | |
614 | if (platform->driver->ops) { | |
615 | soc_pcm_ops.mmap = platform->driver->ops->mmap; | |
616 | soc_pcm_ops.pointer = platform->driver->ops->pointer; | |
617 | soc_pcm_ops.ioctl = platform->driver->ops->ioctl; | |
618 | soc_pcm_ops.copy = platform->driver->ops->copy; | |
619 | soc_pcm_ops.silence = platform->driver->ops->silence; | |
620 | soc_pcm_ops.ack = platform->driver->ops->ack; | |
621 | soc_pcm_ops.page = platform->driver->ops->page; | |
622 | } | |
623 | ||
624 | if (playback) | |
625 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
626 | ||
627 | if (capture) | |
628 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
629 | ||
630 | if (platform->driver->pcm_new) { | |
631 | ret = platform->driver->pcm_new(rtd); | |
632 | if (ret < 0) { | |
633 | pr_err("asoc: platform pcm constructor failed\n"); | |
634 | return ret; | |
635 | } | |
636 | } | |
637 | ||
638 | pcm->private_free = platform->driver->pcm_free; | |
639 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
640 | cpu_dai->name); | |
641 | return ret; | |
642 | } |