Commit | Line | Data |
---|---|---|
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> | |
d6652ef8 | 22 | #include <linux/pm_runtime.h> |
ddee627c LG |
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 | ||
17841020 DA |
31 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
32 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
33 | { |
34 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
35 | int ret; |
36 | ||
17841020 | 37 | if (!soc_dai->driver->symmetric_rates && |
ddee627c LG |
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 | */ | |
17841020 DA |
45 | if (!soc_dai->rate) { |
46 | dev_warn(soc_dai->dev, | |
ddee627c LG |
47 | "Not enforcing symmetric_rates due to race\n"); |
48 | return 0; | |
49 | } | |
50 | ||
17841020 | 51 | dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate); |
ddee627c LG |
52 | |
53 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
54 | SNDRV_PCM_HW_PARAM_RATE, | |
17841020 | 55 | soc_dai->rate, soc_dai->rate); |
ddee627c | 56 | if (ret < 0) { |
17841020 | 57 | dev_err(soc_dai->dev, |
ddee627c LG |
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 | ||
d6652ef8 MB |
81 | pm_runtime_get_sync(cpu_dai->dev); |
82 | pm_runtime_get_sync(codec_dai->dev); | |
83 | pm_runtime_get_sync(platform->dev); | |
84 | ||
b8c0dab9 | 85 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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. */ | |
17841020 DA |
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); | |
ddee627c LG |
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++; | |
b8c0dab9 | 221 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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: | |
b8c0dab9 | 240 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
241 | |
242 | pm_runtime_put(platform->dev); | |
243 | pm_runtime_put(codec_dai->dev); | |
244 | pm_runtime_put(cpu_dai->dev); | |
245 | ||
ddee627c LG |
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 | ||
b8c0dab9 | 260 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
b8c0dab9 | 275 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | */ | |
91d5e6b4 | 283 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
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 | ||
b8c0dab9 | 291 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
17841020 DA |
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; | |
25b76791 | 311 | |
ddee627c LG |
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) { | |
5b6247ab MB |
332 | if (codec->ignore_pmdown_time || |
333 | rtd->dai_link->ignore_pmdown_time) { | |
1d69c5c5 PU |
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 | } | |
ddee627c LG |
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 | ||
b8c0dab9 | 351 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
352 | |
353 | pm_runtime_put(platform->dev); | |
354 | pm_runtime_put(codec_dai->dev); | |
355 | pm_runtime_put(cpu_dai->dev); | |
356 | ||
ddee627c LG |
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 | ||
b8c0dab9 | 373 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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: | |
b8c0dab9 | 426 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 444 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
17841020 DA |
481 | /* store the rate for each DAIs */ |
482 | cpu_dai->rate = params_rate(params); | |
483 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
484 | |
485 | out: | |
b8c0dab9 | 486 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 501 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
b8c0dab9 | 516 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
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 | ||
b8c0dab9 | 537 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
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 | ||
ddee627c LG |
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; | |
a500231d | 608 | struct snd_pcm_ops *soc_pcm_ops = &rtd->ops; |
ddee627c LG |
609 | struct snd_pcm *pcm; |
610 | char new_name[64]; | |
611 | int ret = 0, playback = 0, capture = 0; | |
612 | ||
a500231d SP |
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 | ||
ddee627c LG |
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) { | |
a500231d SP |
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; | |
ddee627c LG |
651 | } |
652 | ||
653 | if (playback) | |
a500231d | 654 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, soc_pcm_ops); |
ddee627c LG |
655 | |
656 | if (capture) | |
a500231d | 657 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, soc_pcm_ops); |
ddee627c LG |
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 | } |