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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> | |
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 | ||
58ba9b25 MB |
65 | /* |
66 | * List of sample sizes that might go over the bus for parameter | |
67 | * application. There ought to be a wildcard sample size for things | |
68 | * like the DAC/ADC resolution to use but there isn't right now. | |
69 | */ | |
70 | static int sample_sizes[] = { | |
88e33954 | 71 | 24, 32, |
58ba9b25 MB |
72 | }; |
73 | ||
74 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
75 | struct snd_soc_dai *dai) | |
76 | { | |
77 | int ret, i, bits; | |
78 | ||
79 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
80 | bits = dai->driver->playback.sig_bits; | |
81 | else | |
82 | bits = dai->driver->capture.sig_bits; | |
83 | ||
84 | if (!bits) | |
85 | return; | |
86 | ||
87 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
88 | if (bits >= sample_sizes[i]) |
89 | continue; | |
90 | ||
91 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
92 | sample_sizes[i], bits); | |
58ba9b25 MB |
93 | if (ret != 0) |
94 | dev_warn(dai->dev, | |
95 | "Failed to set MSB %d/%d: %d\n", | |
96 | bits, sample_sizes[i], ret); | |
97 | } | |
98 | } | |
99 | ||
ddee627c LG |
100 | /* |
101 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
102 | * then initialized and any private data can be allocated. This also calls | |
103 | * startup for the cpu DAI, platform, machine and codec DAI. | |
104 | */ | |
105 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
106 | { | |
107 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
108 | struct snd_pcm_runtime *runtime = substream->runtime; | |
109 | struct snd_soc_platform *platform = rtd->platform; | |
110 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
111 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
112 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
113 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
114 | int ret = 0; | |
115 | ||
d6652ef8 MB |
116 | pm_runtime_get_sync(cpu_dai->dev); |
117 | pm_runtime_get_sync(codec_dai->dev); | |
118 | pm_runtime_get_sync(platform->dev); | |
119 | ||
b8c0dab9 | 120 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
121 | |
122 | /* startup the audio subsystem */ | |
123 | if (cpu_dai->driver->ops->startup) { | |
124 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); | |
125 | if (ret < 0) { | |
25bfe662 MB |
126 | dev_err(cpu_dai->dev, "can't open interface %s: %d\n", |
127 | cpu_dai->name, ret); | |
ddee627c LG |
128 | goto out; |
129 | } | |
130 | } | |
131 | ||
132 | if (platform->driver->ops && platform->driver->ops->open) { | |
133 | ret = platform->driver->ops->open(substream); | |
134 | if (ret < 0) { | |
25bfe662 MB |
135 | dev_err(platform->dev, "can't open platform %s: %d\n", |
136 | platform->name, ret); | |
ddee627c LG |
137 | goto platform_err; |
138 | } | |
139 | } | |
140 | ||
141 | if (codec_dai->driver->ops->startup) { | |
142 | ret = codec_dai->driver->ops->startup(substream, codec_dai); | |
143 | if (ret < 0) { | |
25bfe662 MB |
144 | dev_err(codec_dai->dev, "can't open codec %s: %d\n", |
145 | codec_dai->name, ret); | |
ddee627c LG |
146 | goto codec_dai_err; |
147 | } | |
148 | } | |
149 | ||
150 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
151 | ret = rtd->dai_link->ops->startup(substream); | |
152 | if (ret < 0) { | |
25bfe662 MB |
153 | pr_err("asoc: %s startup failed: %d\n", |
154 | rtd->dai_link->name, ret); | |
ddee627c LG |
155 | goto machine_err; |
156 | } | |
157 | } | |
158 | ||
159 | /* Check that the codec and cpu DAIs are compatible */ | |
160 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
161 | runtime->hw.rate_min = | |
162 | max(codec_dai_drv->playback.rate_min, | |
163 | cpu_dai_drv->playback.rate_min); | |
164 | runtime->hw.rate_max = | |
165 | min(codec_dai_drv->playback.rate_max, | |
166 | cpu_dai_drv->playback.rate_max); | |
167 | runtime->hw.channels_min = | |
168 | max(codec_dai_drv->playback.channels_min, | |
169 | cpu_dai_drv->playback.channels_min); | |
170 | runtime->hw.channels_max = | |
171 | min(codec_dai_drv->playback.channels_max, | |
172 | cpu_dai_drv->playback.channels_max); | |
173 | runtime->hw.formats = | |
174 | codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; | |
175 | runtime->hw.rates = | |
176 | codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; | |
177 | if (codec_dai_drv->playback.rates | |
178 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
179 | runtime->hw.rates |= cpu_dai_drv->playback.rates; | |
180 | if (cpu_dai_drv->playback.rates | |
181 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
182 | runtime->hw.rates |= codec_dai_drv->playback.rates; | |
183 | } else { | |
184 | runtime->hw.rate_min = | |
185 | max(codec_dai_drv->capture.rate_min, | |
186 | cpu_dai_drv->capture.rate_min); | |
187 | runtime->hw.rate_max = | |
188 | min(codec_dai_drv->capture.rate_max, | |
189 | cpu_dai_drv->capture.rate_max); | |
190 | runtime->hw.channels_min = | |
191 | max(codec_dai_drv->capture.channels_min, | |
192 | cpu_dai_drv->capture.channels_min); | |
193 | runtime->hw.channels_max = | |
194 | min(codec_dai_drv->capture.channels_max, | |
195 | cpu_dai_drv->capture.channels_max); | |
196 | runtime->hw.formats = | |
197 | codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; | |
198 | runtime->hw.rates = | |
199 | codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; | |
200 | if (codec_dai_drv->capture.rates | |
201 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
202 | runtime->hw.rates |= cpu_dai_drv->capture.rates; | |
203 | if (cpu_dai_drv->capture.rates | |
204 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
205 | runtime->hw.rates |= codec_dai_drv->capture.rates; | |
206 | } | |
207 | ||
208 | ret = -EINVAL; | |
209 | snd_pcm_limit_hw_rates(runtime); | |
210 | if (!runtime->hw.rates) { | |
211 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
212 | codec_dai->name, cpu_dai->name); | |
213 | goto config_err; | |
214 | } | |
215 | if (!runtime->hw.formats) { | |
216 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
217 | codec_dai->name, cpu_dai->name); | |
218 | goto config_err; | |
219 | } | |
220 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
221 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
222 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
223 | codec_dai->name, cpu_dai->name); | |
224 | goto config_err; | |
225 | } | |
226 | ||
58ba9b25 MB |
227 | soc_pcm_apply_msb(substream, codec_dai); |
228 | soc_pcm_apply_msb(substream, cpu_dai); | |
229 | ||
ddee627c | 230 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
231 | if (cpu_dai->active) { |
232 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
233 | if (ret != 0) | |
234 | goto config_err; | |
235 | } | |
236 | ||
237 | if (codec_dai->active) { | |
238 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
239 | if (ret != 0) |
240 | goto config_err; | |
241 | } | |
242 | ||
243 | pr_debug("asoc: %s <-> %s info:\n", | |
244 | codec_dai->name, cpu_dai->name); | |
245 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
246 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
247 | runtime->hw.channels_max); | |
248 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
249 | runtime->hw.rate_max); | |
250 | ||
251 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
252 | cpu_dai->playback_active++; | |
253 | codec_dai->playback_active++; | |
254 | } else { | |
255 | cpu_dai->capture_active++; | |
256 | codec_dai->capture_active++; | |
257 | } | |
258 | cpu_dai->active++; | |
259 | codec_dai->active++; | |
260 | rtd->codec->active++; | |
b8c0dab9 | 261 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
262 | return 0; |
263 | ||
264 | config_err: | |
265 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
266 | rtd->dai_link->ops->shutdown(substream); | |
267 | ||
268 | machine_err: | |
269 | if (codec_dai->driver->ops->shutdown) | |
270 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
271 | ||
272 | codec_dai_err: | |
273 | if (platform->driver->ops && platform->driver->ops->close) | |
274 | platform->driver->ops->close(substream); | |
275 | ||
276 | platform_err: | |
277 | if (cpu_dai->driver->ops->shutdown) | |
278 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
279 | out: | |
b8c0dab9 | 280 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
281 | |
282 | pm_runtime_put(platform->dev); | |
283 | pm_runtime_put(codec_dai->dev); | |
284 | pm_runtime_put(cpu_dai->dev); | |
285 | ||
ddee627c LG |
286 | return ret; |
287 | } | |
288 | ||
289 | /* | |
290 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
291 | * This is to ensure there are no pops or clicks in between any music tracks | |
292 | * due to DAPM power cycling. | |
293 | */ | |
294 | static void close_delayed_work(struct work_struct *work) | |
295 | { | |
296 | struct snd_soc_pcm_runtime *rtd = | |
297 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
298 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
299 | ||
b8c0dab9 | 300 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
301 | |
302 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", | |
303 | codec_dai->driver->playback.stream_name, | |
304 | codec_dai->playback_active ? "active" : "inactive", | |
305 | codec_dai->pop_wait ? "yes" : "no"); | |
306 | ||
307 | /* are we waiting on this codec DAI stream */ | |
308 | if (codec_dai->pop_wait == 1) { | |
309 | codec_dai->pop_wait = 0; | |
7bd3a6f3 MB |
310 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
311 | codec_dai, SND_SOC_DAPM_STREAM_STOP); | |
ddee627c LG |
312 | } |
313 | ||
b8c0dab9 | 314 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
315 | } |
316 | ||
317 | /* | |
318 | * Called by ALSA when a PCM substream is closed. Private data can be | |
319 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
320 | * shutdown. | |
321 | */ | |
91d5e6b4 | 322 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
323 | { |
324 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
325 | struct snd_soc_platform *platform = rtd->platform; | |
326 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
327 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
328 | struct snd_soc_codec *codec = rtd->codec; | |
329 | ||
b8c0dab9 | 330 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
331 | |
332 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
333 | cpu_dai->playback_active--; | |
334 | codec_dai->playback_active--; | |
335 | } else { | |
336 | cpu_dai->capture_active--; | |
337 | codec_dai->capture_active--; | |
338 | } | |
339 | ||
340 | cpu_dai->active--; | |
341 | codec_dai->active--; | |
342 | codec->active--; | |
343 | ||
17841020 DA |
344 | /* clear the corresponding DAIs rate when inactive */ |
345 | if (!cpu_dai->active) | |
346 | cpu_dai->rate = 0; | |
347 | ||
348 | if (!codec_dai->active) | |
349 | codec_dai->rate = 0; | |
25b76791 | 350 | |
ddee627c LG |
351 | /* Muting the DAC suppresses artifacts caused during digital |
352 | * shutdown, for example from stopping clocks. | |
353 | */ | |
354 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
355 | snd_soc_dai_digital_mute(codec_dai, 1); | |
356 | ||
357 | if (cpu_dai->driver->ops->shutdown) | |
358 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
359 | ||
360 | if (codec_dai->driver->ops->shutdown) | |
361 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
362 | ||
363 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
364 | rtd->dai_link->ops->shutdown(substream); | |
365 | ||
366 | if (platform->driver->ops && platform->driver->ops->close) | |
367 | platform->driver->ops->close(substream); | |
368 | cpu_dai->runtime = NULL; | |
369 | ||
370 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 371 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 372 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
373 | /* powered down playback stream now */ |
374 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 MB |
375 | SNDRV_PCM_STREAM_PLAYBACK, |
376 | codec_dai, | |
377 | SND_SOC_DAPM_STREAM_STOP); | |
1d69c5c5 PU |
378 | } else { |
379 | /* start delayed pop wq here for playback streams */ | |
380 | codec_dai->pop_wait = 1; | |
381 | schedule_delayed_work(&rtd->delayed_work, | |
382 | msecs_to_jiffies(rtd->pmdown_time)); | |
383 | } | |
ddee627c LG |
384 | } else { |
385 | /* capture streams can be powered down now */ | |
7bd3a6f3 MB |
386 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
387 | codec_dai, SND_SOC_DAPM_STREAM_STOP); | |
ddee627c LG |
388 | } |
389 | ||
b8c0dab9 | 390 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
391 | |
392 | pm_runtime_put(platform->dev); | |
393 | pm_runtime_put(codec_dai->dev); | |
394 | pm_runtime_put(cpu_dai->dev); | |
395 | ||
ddee627c LG |
396 | return 0; |
397 | } | |
398 | ||
399 | /* | |
400 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
401 | * rate, etc. This function is non atomic and can be called multiple times, | |
402 | * it can refer to the runtime info. | |
403 | */ | |
404 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
405 | { | |
406 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
407 | struct snd_soc_platform *platform = rtd->platform; | |
408 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
409 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
410 | int ret = 0; | |
411 | ||
b8c0dab9 | 412 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
413 | |
414 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
415 | ret = rtd->dai_link->ops->prepare(substream); | |
416 | if (ret < 0) { | |
25bfe662 | 417 | pr_err("asoc: machine prepare error: %d\n", ret); |
ddee627c LG |
418 | goto out; |
419 | } | |
420 | } | |
421 | ||
422 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
423 | ret = platform->driver->ops->prepare(substream); | |
424 | if (ret < 0) { | |
25bfe662 MB |
425 | dev_err(platform->dev, "platform prepare error: %d\n", |
426 | ret); | |
ddee627c LG |
427 | goto out; |
428 | } | |
429 | } | |
430 | ||
431 | if (codec_dai->driver->ops->prepare) { | |
432 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); | |
433 | if (ret < 0) { | |
25bfe662 MB |
434 | dev_err(codec_dai->dev, "DAI prepare error: %d\n", |
435 | ret); | |
ddee627c LG |
436 | goto out; |
437 | } | |
438 | } | |
439 | ||
440 | if (cpu_dai->driver->ops->prepare) { | |
441 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); | |
442 | if (ret < 0) { | |
25bfe662 MB |
443 | dev_err(cpu_dai->dev, "DAI prepare error: %d\n", |
444 | ret); | |
ddee627c LG |
445 | goto out; |
446 | } | |
447 | } | |
448 | ||
449 | /* cancel any delayed stream shutdown that is pending */ | |
450 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
451 | codec_dai->pop_wait) { | |
452 | codec_dai->pop_wait = 0; | |
453 | cancel_delayed_work(&rtd->delayed_work); | |
454 | } | |
455 | ||
7bd3a6f3 MB |
456 | snd_soc_dapm_stream_event(rtd, substream->stream, codec_dai, |
457 | SND_SOC_DAPM_STREAM_START); | |
ddee627c LG |
458 | |
459 | snd_soc_dai_digital_mute(codec_dai, 0); | |
460 | ||
461 | out: | |
b8c0dab9 | 462 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
463 | return ret; |
464 | } | |
465 | ||
466 | /* | |
467 | * Called by ALSA when the hardware params are set by application. This | |
468 | * function can also be called multiple times and can allocate buffers | |
469 | * (using snd_pcm_lib_* ). It's non-atomic. | |
470 | */ | |
471 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
472 | struct snd_pcm_hw_params *params) | |
473 | { | |
474 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
475 | struct snd_soc_platform *platform = rtd->platform; | |
476 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
477 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
478 | int ret = 0; | |
479 | ||
b8c0dab9 | 480 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
481 | |
482 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
483 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
484 | if (ret < 0) { | |
25bfe662 | 485 | pr_err("asoc: machine hw_params failed: %d\n", ret); |
ddee627c LG |
486 | goto out; |
487 | } | |
488 | } | |
489 | ||
490 | if (codec_dai->driver->ops->hw_params) { | |
491 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); | |
492 | if (ret < 0) { | |
25bfe662 MB |
493 | dev_err(codec_dai->dev, "can't set %s hw params: %d\n", |
494 | codec_dai->name, ret); | |
ddee627c LG |
495 | goto codec_err; |
496 | } | |
497 | } | |
498 | ||
499 | if (cpu_dai->driver->ops->hw_params) { | |
500 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); | |
501 | if (ret < 0) { | |
25bfe662 MB |
502 | dev_err(cpu_dai->dev, "%s hw params failed: %d\n", |
503 | cpu_dai->name, ret); | |
ddee627c LG |
504 | goto interface_err; |
505 | } | |
506 | } | |
507 | ||
508 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
509 | ret = platform->driver->ops->hw_params(substream, params); | |
510 | if (ret < 0) { | |
25bfe662 MB |
511 | dev_err(platform->dev, "%s hw params failed: %d\n", |
512 | platform->name, ret); | |
ddee627c LG |
513 | goto platform_err; |
514 | } | |
515 | } | |
516 | ||
17841020 DA |
517 | /* store the rate for each DAIs */ |
518 | cpu_dai->rate = params_rate(params); | |
519 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
520 | |
521 | out: | |
b8c0dab9 | 522 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
523 | return ret; |
524 | ||
525 | platform_err: | |
526 | if (cpu_dai->driver->ops->hw_free) | |
527 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
528 | ||
529 | interface_err: | |
530 | if (codec_dai->driver->ops->hw_free) | |
531 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
532 | ||
533 | codec_err: | |
534 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
535 | rtd->dai_link->ops->hw_free(substream); | |
536 | ||
b8c0dab9 | 537 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
538 | return ret; |
539 | } | |
540 | ||
541 | /* | |
542 | * Frees resources allocated by hw_params, can be called multiple times | |
543 | */ | |
544 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
545 | { | |
546 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
547 | struct snd_soc_platform *platform = rtd->platform; | |
548 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
549 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
550 | struct snd_soc_codec *codec = rtd->codec; | |
551 | ||
b8c0dab9 | 552 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
553 | |
554 | /* apply codec digital mute */ | |
555 | if (!codec->active) | |
556 | snd_soc_dai_digital_mute(codec_dai, 1); | |
557 | ||
558 | /* free any machine hw params */ | |
559 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
560 | rtd->dai_link->ops->hw_free(substream); | |
561 | ||
562 | /* free any DMA resources */ | |
563 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
564 | platform->driver->ops->hw_free(substream); | |
565 | ||
566 | /* now free hw params for the DAIs */ | |
567 | if (codec_dai->driver->ops->hw_free) | |
568 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
569 | ||
570 | if (cpu_dai->driver->ops->hw_free) | |
571 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
572 | ||
b8c0dab9 | 573 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
574 | return 0; |
575 | } | |
576 | ||
577 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
578 | { | |
579 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
580 | struct snd_soc_platform *platform = rtd->platform; | |
581 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
582 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
583 | int ret; | |
584 | ||
585 | if (codec_dai->driver->ops->trigger) { | |
586 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); | |
587 | if (ret < 0) | |
588 | return ret; | |
589 | } | |
590 | ||
591 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
592 | ret = platform->driver->ops->trigger(substream, cmd); | |
593 | if (ret < 0) | |
594 | return ret; | |
595 | } | |
596 | ||
597 | if (cpu_dai->driver->ops->trigger) { | |
598 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); | |
599 | if (ret < 0) | |
600 | return ret; | |
601 | } | |
602 | return 0; | |
603 | } | |
604 | ||
605 | /* | |
606 | * soc level wrapper for pointer callback | |
607 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
608 | * the runtime->delay will be updated accordingly. | |
609 | */ | |
610 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
611 | { | |
612 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
613 | struct snd_soc_platform *platform = rtd->platform; | |
614 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
615 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
616 | struct snd_pcm_runtime *runtime = substream->runtime; | |
617 | snd_pcm_uframes_t offset = 0; | |
618 | snd_pcm_sframes_t delay = 0; | |
619 | ||
620 | if (platform->driver->ops && platform->driver->ops->pointer) | |
621 | offset = platform->driver->ops->pointer(substream); | |
622 | ||
623 | if (cpu_dai->driver->ops->delay) | |
624 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
625 | ||
626 | if (codec_dai->driver->ops->delay) | |
627 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
628 | ||
629 | if (platform->driver->delay) | |
630 | delay += platform->driver->delay(substream, codec_dai); | |
631 | ||
632 | runtime->delay = delay; | |
633 | ||
634 | return offset; | |
635 | } | |
636 | ||
ddee627c LG |
637 | /* create a new pcm */ |
638 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
639 | { | |
640 | struct snd_soc_codec *codec = rtd->codec; | |
641 | struct snd_soc_platform *platform = rtd->platform; | |
642 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
643 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
a500231d | 644 | struct snd_pcm_ops *soc_pcm_ops = &rtd->ops; |
ddee627c LG |
645 | struct snd_pcm *pcm; |
646 | char new_name[64]; | |
647 | int ret = 0, playback = 0, capture = 0; | |
648 | ||
a500231d SP |
649 | soc_pcm_ops->open = soc_pcm_open; |
650 | soc_pcm_ops->close = soc_pcm_close; | |
651 | soc_pcm_ops->hw_params = soc_pcm_hw_params; | |
652 | soc_pcm_ops->hw_free = soc_pcm_hw_free; | |
653 | soc_pcm_ops->prepare = soc_pcm_prepare; | |
654 | soc_pcm_ops->trigger = soc_pcm_trigger; | |
655 | soc_pcm_ops->pointer = soc_pcm_pointer; | |
656 | ||
ddee627c LG |
657 | /* check client and interface hw capabilities */ |
658 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
659 | rtd->dai_link->stream_name, codec_dai->name, num); | |
660 | ||
661 | if (codec_dai->driver->playback.channels_min) | |
662 | playback = 1; | |
663 | if (codec_dai->driver->capture.channels_min) | |
664 | capture = 1; | |
665 | ||
666 | dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name); | |
667 | ret = snd_pcm_new(rtd->card->snd_card, new_name, | |
668 | num, playback, capture, &pcm); | |
669 | if (ret < 0) { | |
670 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
671 | return ret; | |
672 | } | |
673 | ||
674 | /* DAPM dai link stream work */ | |
675 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
676 | ||
677 | rtd->pcm = pcm; | |
678 | pcm->private_data = rtd; | |
679 | if (platform->driver->ops) { | |
a500231d SP |
680 | soc_pcm_ops->mmap = platform->driver->ops->mmap; |
681 | soc_pcm_ops->pointer = platform->driver->ops->pointer; | |
682 | soc_pcm_ops->ioctl = platform->driver->ops->ioctl; | |
683 | soc_pcm_ops->copy = platform->driver->ops->copy; | |
684 | soc_pcm_ops->silence = platform->driver->ops->silence; | |
685 | soc_pcm_ops->ack = platform->driver->ops->ack; | |
686 | soc_pcm_ops->page = platform->driver->ops->page; | |
ddee627c LG |
687 | } |
688 | ||
689 | if (playback) | |
a500231d | 690 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, soc_pcm_ops); |
ddee627c LG |
691 | |
692 | if (capture) | |
a500231d | 693 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, soc_pcm_ops); |
ddee627c LG |
694 | |
695 | if (platform->driver->pcm_new) { | |
696 | ret = platform->driver->pcm_new(rtd); | |
697 | if (ret < 0) { | |
698 | pr_err("asoc: platform pcm constructor failed\n"); | |
699 | return ret; | |
700 | } | |
701 | } | |
702 | ||
703 | pcm->private_free = platform->driver->pcm_free; | |
704 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
705 | cpu_dai->name); | |
706 | return ret; | |
707 | } |