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 | ||
17841020 DA |
30 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
31 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
32 | { |
33 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
34 | int ret; |
35 | ||
17841020 | 36 | if (!soc_dai->driver->symmetric_rates && |
ddee627c LG |
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 | */ | |
17841020 DA |
44 | if (!soc_dai->rate) { |
45 | dev_warn(soc_dai->dev, | |
ddee627c LG |
46 | "Not enforcing symmetric_rates due to race\n"); |
47 | return 0; | |
48 | } | |
49 | ||
17841020 | 50 | dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate); |
ddee627c LG |
51 | |
52 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
53 | SNDRV_PCM_HW_PARAM_RATE, | |
17841020 | 54 | soc_dai->rate, soc_dai->rate); |
ddee627c | 55 | if (ret < 0) { |
17841020 | 56 | dev_err(soc_dai->dev, |
ddee627c LG |
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 | ||
b8c0dab9 | 80 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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. */ | |
17841020 DA |
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); | |
ddee627c LG |
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++; | |
b8c0dab9 | 216 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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: | |
b8c0dab9 | 235 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 250 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
b8c0dab9 | 265 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | */ | |
91d5e6b4 | 273 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
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 | ||
b8c0dab9 | 281 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
17841020 DA |
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; | |
25b76791 | 301 | |
ddee627c LG |
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) { | |
1d69c5c5 PU |
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 | } | |
ddee627c LG |
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 | ||
b8c0dab9 | 340 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 357 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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: | |
b8c0dab9 | 410 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 428 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
17841020 DA |
465 | /* store the rate for each DAIs */ |
466 | cpu_dai->rate = params_rate(params); | |
467 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
468 | |
469 | out: | |
b8c0dab9 | 470 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 485 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 500 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
b8c0dab9 | 521 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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, | |
91d5e6b4 | 588 | .close = soc_pcm_close, |
ddee627c LG |
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 | } |