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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> | |
01d7584c | 25 | #include <linux/export.h> |
f86dcef8 | 26 | #include <linux/debugfs.h> |
ddee627c LG |
27 | #include <sound/core.h> |
28 | #include <sound/pcm.h> | |
29 | #include <sound/pcm_params.h> | |
30 | #include <sound/soc.h> | |
01d7584c | 31 | #include <sound/soc-dpcm.h> |
ddee627c LG |
32 | #include <sound/initval.h> |
33 | ||
01d7584c LG |
34 | #define DPCM_MAX_BE_USERS 8 |
35 | ||
36 | /* DPCM stream event, send event to FE and all active BEs. */ | |
37 | static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, | |
38 | int event) | |
39 | { | |
40 | struct snd_soc_dpcm *dpcm; | |
41 | ||
42 | list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) { | |
43 | ||
44 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
45 | ||
46 | dev_dbg(be->dev, "pm: BE %s event %d dir %d\n", | |
47 | be->dai_link->name, event, dir); | |
48 | ||
49 | snd_soc_dapm_stream_event(be, dir, event); | |
50 | } | |
51 | ||
52 | snd_soc_dapm_stream_event(fe, dir, event); | |
53 | ||
54 | return 0; | |
55 | } | |
56 | ||
17841020 DA |
57 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
58 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
59 | { |
60 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
61 | int ret; |
62 | ||
17841020 | 63 | if (!soc_dai->driver->symmetric_rates && |
ddee627c LG |
64 | !rtd->dai_link->symmetric_rates) |
65 | return 0; | |
66 | ||
67 | /* This can happen if multiple streams are starting simultaneously - | |
68 | * the second can need to get its constraints before the first has | |
69 | * picked a rate. Complain and allow the application to carry on. | |
70 | */ | |
17841020 DA |
71 | if (!soc_dai->rate) { |
72 | dev_warn(soc_dai->dev, | |
ddee627c LG |
73 | "Not enforcing symmetric_rates due to race\n"); |
74 | return 0; | |
75 | } | |
76 | ||
17841020 | 77 | dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate); |
ddee627c LG |
78 | |
79 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
80 | SNDRV_PCM_HW_PARAM_RATE, | |
17841020 | 81 | soc_dai->rate, soc_dai->rate); |
ddee627c | 82 | if (ret < 0) { |
17841020 | 83 | dev_err(soc_dai->dev, |
ddee627c LG |
84 | "Unable to apply rate symmetry constraint: %d\n", ret); |
85 | return ret; | |
86 | } | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
58ba9b25 MB |
91 | /* |
92 | * List of sample sizes that might go over the bus for parameter | |
93 | * application. There ought to be a wildcard sample size for things | |
94 | * like the DAC/ADC resolution to use but there isn't right now. | |
95 | */ | |
96 | static int sample_sizes[] = { | |
88e33954 | 97 | 24, 32, |
58ba9b25 MB |
98 | }; |
99 | ||
100 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
101 | struct snd_soc_dai *dai) | |
102 | { | |
103 | int ret, i, bits; | |
104 | ||
105 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
106 | bits = dai->driver->playback.sig_bits; | |
107 | else | |
108 | bits = dai->driver->capture.sig_bits; | |
109 | ||
110 | if (!bits) | |
111 | return; | |
112 | ||
113 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
114 | if (bits >= sample_sizes[i]) |
115 | continue; | |
116 | ||
117 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
118 | sample_sizes[i], bits); | |
58ba9b25 MB |
119 | if (ret != 0) |
120 | dev_warn(dai->dev, | |
121 | "Failed to set MSB %d/%d: %d\n", | |
122 | bits, sample_sizes[i], ret); | |
123 | } | |
124 | } | |
125 | ||
ddee627c LG |
126 | /* |
127 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
128 | * then initialized and any private data can be allocated. This also calls | |
129 | * startup for the cpu DAI, platform, machine and codec DAI. | |
130 | */ | |
131 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
132 | { | |
133 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
134 | struct snd_pcm_runtime *runtime = substream->runtime; | |
135 | struct snd_soc_platform *platform = rtd->platform; | |
136 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
137 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
138 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
139 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
140 | int ret = 0; | |
141 | ||
d6652ef8 MB |
142 | pm_runtime_get_sync(cpu_dai->dev); |
143 | pm_runtime_get_sync(codec_dai->dev); | |
144 | pm_runtime_get_sync(platform->dev); | |
145 | ||
b8c0dab9 | 146 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
147 | |
148 | /* startup the audio subsystem */ | |
149 | if (cpu_dai->driver->ops->startup) { | |
150 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); | |
151 | if (ret < 0) { | |
25bfe662 MB |
152 | dev_err(cpu_dai->dev, "can't open interface %s: %d\n", |
153 | cpu_dai->name, ret); | |
ddee627c LG |
154 | goto out; |
155 | } | |
156 | } | |
157 | ||
158 | if (platform->driver->ops && platform->driver->ops->open) { | |
159 | ret = platform->driver->ops->open(substream); | |
160 | if (ret < 0) { | |
25bfe662 MB |
161 | dev_err(platform->dev, "can't open platform %s: %d\n", |
162 | platform->name, ret); | |
ddee627c LG |
163 | goto platform_err; |
164 | } | |
165 | } | |
166 | ||
167 | if (codec_dai->driver->ops->startup) { | |
168 | ret = codec_dai->driver->ops->startup(substream, codec_dai); | |
169 | if (ret < 0) { | |
25bfe662 MB |
170 | dev_err(codec_dai->dev, "can't open codec %s: %d\n", |
171 | codec_dai->name, ret); | |
ddee627c LG |
172 | goto codec_dai_err; |
173 | } | |
174 | } | |
175 | ||
176 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
177 | ret = rtd->dai_link->ops->startup(substream); | |
178 | if (ret < 0) { | |
25bfe662 MB |
179 | pr_err("asoc: %s startup failed: %d\n", |
180 | rtd->dai_link->name, ret); | |
ddee627c LG |
181 | goto machine_err; |
182 | } | |
183 | } | |
184 | ||
01d7584c LG |
185 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
186 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
187 | goto dynamic; | |
188 | ||
ddee627c LG |
189 | /* Check that the codec and cpu DAIs are compatible */ |
190 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
191 | runtime->hw.rate_min = | |
192 | max(codec_dai_drv->playback.rate_min, | |
193 | cpu_dai_drv->playback.rate_min); | |
194 | runtime->hw.rate_max = | |
195 | min(codec_dai_drv->playback.rate_max, | |
196 | cpu_dai_drv->playback.rate_max); | |
197 | runtime->hw.channels_min = | |
198 | max(codec_dai_drv->playback.channels_min, | |
199 | cpu_dai_drv->playback.channels_min); | |
200 | runtime->hw.channels_max = | |
201 | min(codec_dai_drv->playback.channels_max, | |
202 | cpu_dai_drv->playback.channels_max); | |
203 | runtime->hw.formats = | |
204 | codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; | |
205 | runtime->hw.rates = | |
206 | codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; | |
207 | if (codec_dai_drv->playback.rates | |
208 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
209 | runtime->hw.rates |= cpu_dai_drv->playback.rates; | |
210 | if (cpu_dai_drv->playback.rates | |
211 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
212 | runtime->hw.rates |= codec_dai_drv->playback.rates; | |
213 | } else { | |
214 | runtime->hw.rate_min = | |
215 | max(codec_dai_drv->capture.rate_min, | |
216 | cpu_dai_drv->capture.rate_min); | |
217 | runtime->hw.rate_max = | |
218 | min(codec_dai_drv->capture.rate_max, | |
219 | cpu_dai_drv->capture.rate_max); | |
220 | runtime->hw.channels_min = | |
221 | max(codec_dai_drv->capture.channels_min, | |
222 | cpu_dai_drv->capture.channels_min); | |
223 | runtime->hw.channels_max = | |
224 | min(codec_dai_drv->capture.channels_max, | |
225 | cpu_dai_drv->capture.channels_max); | |
226 | runtime->hw.formats = | |
227 | codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; | |
228 | runtime->hw.rates = | |
229 | codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; | |
230 | if (codec_dai_drv->capture.rates | |
231 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
232 | runtime->hw.rates |= cpu_dai_drv->capture.rates; | |
233 | if (cpu_dai_drv->capture.rates | |
234 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
235 | runtime->hw.rates |= codec_dai_drv->capture.rates; | |
236 | } | |
237 | ||
238 | ret = -EINVAL; | |
239 | snd_pcm_limit_hw_rates(runtime); | |
240 | if (!runtime->hw.rates) { | |
241 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
242 | codec_dai->name, cpu_dai->name); | |
243 | goto config_err; | |
244 | } | |
245 | if (!runtime->hw.formats) { | |
246 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
247 | codec_dai->name, cpu_dai->name); | |
248 | goto config_err; | |
249 | } | |
250 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
251 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
252 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
253 | codec_dai->name, cpu_dai->name); | |
254 | goto config_err; | |
255 | } | |
256 | ||
58ba9b25 MB |
257 | soc_pcm_apply_msb(substream, codec_dai); |
258 | soc_pcm_apply_msb(substream, cpu_dai); | |
259 | ||
ddee627c | 260 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
261 | if (cpu_dai->active) { |
262 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
263 | if (ret != 0) | |
264 | goto config_err; | |
265 | } | |
266 | ||
267 | if (codec_dai->active) { | |
268 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
269 | if (ret != 0) |
270 | goto config_err; | |
271 | } | |
272 | ||
273 | pr_debug("asoc: %s <-> %s info:\n", | |
274 | codec_dai->name, cpu_dai->name); | |
275 | pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); | |
276 | pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
277 | runtime->hw.channels_max); | |
278 | pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
279 | runtime->hw.rate_max); | |
280 | ||
01d7584c | 281 | dynamic: |
ddee627c LG |
282 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
283 | cpu_dai->playback_active++; | |
284 | codec_dai->playback_active++; | |
285 | } else { | |
286 | cpu_dai->capture_active++; | |
287 | codec_dai->capture_active++; | |
288 | } | |
289 | cpu_dai->active++; | |
290 | codec_dai->active++; | |
291 | rtd->codec->active++; | |
b8c0dab9 | 292 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
293 | return 0; |
294 | ||
295 | config_err: | |
296 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
297 | rtd->dai_link->ops->shutdown(substream); | |
298 | ||
299 | machine_err: | |
300 | if (codec_dai->driver->ops->shutdown) | |
301 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
302 | ||
303 | codec_dai_err: | |
304 | if (platform->driver->ops && platform->driver->ops->close) | |
305 | platform->driver->ops->close(substream); | |
306 | ||
307 | platform_err: | |
308 | if (cpu_dai->driver->ops->shutdown) | |
309 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
310 | out: | |
b8c0dab9 | 311 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
312 | |
313 | pm_runtime_put(platform->dev); | |
314 | pm_runtime_put(codec_dai->dev); | |
315 | pm_runtime_put(cpu_dai->dev); | |
316 | ||
ddee627c LG |
317 | return ret; |
318 | } | |
319 | ||
320 | /* | |
321 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
322 | * This is to ensure there are no pops or clicks in between any music tracks | |
323 | * due to DAPM power cycling. | |
324 | */ | |
325 | static void close_delayed_work(struct work_struct *work) | |
326 | { | |
327 | struct snd_soc_pcm_runtime *rtd = | |
328 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
329 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
330 | ||
b8c0dab9 | 331 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
332 | |
333 | pr_debug("pop wq checking: %s status: %s waiting: %s\n", | |
334 | codec_dai->driver->playback.stream_name, | |
335 | codec_dai->playback_active ? "active" : "inactive", | |
336 | codec_dai->pop_wait ? "yes" : "no"); | |
337 | ||
338 | /* are we waiting on this codec DAI stream */ | |
339 | if (codec_dai->pop_wait == 1) { | |
340 | codec_dai->pop_wait = 0; | |
7bd3a6f3 | 341 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 342 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
343 | } |
344 | ||
b8c0dab9 | 345 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
346 | } |
347 | ||
348 | /* | |
349 | * Called by ALSA when a PCM substream is closed. Private data can be | |
350 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
351 | * shutdown. | |
352 | */ | |
91d5e6b4 | 353 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
354 | { |
355 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
356 | struct snd_soc_platform *platform = rtd->platform; | |
357 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
358 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
359 | struct snd_soc_codec *codec = rtd->codec; | |
360 | ||
b8c0dab9 | 361 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
362 | |
363 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
364 | cpu_dai->playback_active--; | |
365 | codec_dai->playback_active--; | |
366 | } else { | |
367 | cpu_dai->capture_active--; | |
368 | codec_dai->capture_active--; | |
369 | } | |
370 | ||
371 | cpu_dai->active--; | |
372 | codec_dai->active--; | |
373 | codec->active--; | |
374 | ||
17841020 DA |
375 | /* clear the corresponding DAIs rate when inactive */ |
376 | if (!cpu_dai->active) | |
377 | cpu_dai->rate = 0; | |
378 | ||
379 | if (!codec_dai->active) | |
380 | codec_dai->rate = 0; | |
25b76791 | 381 | |
ddee627c LG |
382 | /* Muting the DAC suppresses artifacts caused during digital |
383 | * shutdown, for example from stopping clocks. | |
384 | */ | |
385 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
386 | snd_soc_dai_digital_mute(codec_dai, 1); | |
387 | ||
388 | if (cpu_dai->driver->ops->shutdown) | |
389 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
390 | ||
391 | if (codec_dai->driver->ops->shutdown) | |
392 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
393 | ||
394 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
395 | rtd->dai_link->ops->shutdown(substream); | |
396 | ||
397 | if (platform->driver->ops && platform->driver->ops->close) | |
398 | platform->driver->ops->close(substream); | |
399 | cpu_dai->runtime = NULL; | |
400 | ||
401 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 402 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 403 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
404 | /* powered down playback stream now */ |
405 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 406 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 407 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
408 | } else { |
409 | /* start delayed pop wq here for playback streams */ | |
410 | codec_dai->pop_wait = 1; | |
411 | schedule_delayed_work(&rtd->delayed_work, | |
412 | msecs_to_jiffies(rtd->pmdown_time)); | |
413 | } | |
ddee627c LG |
414 | } else { |
415 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 416 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 417 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
418 | } |
419 | ||
b8c0dab9 | 420 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
421 | |
422 | pm_runtime_put(platform->dev); | |
423 | pm_runtime_put(codec_dai->dev); | |
424 | pm_runtime_put(cpu_dai->dev); | |
425 | ||
ddee627c LG |
426 | return 0; |
427 | } | |
428 | ||
429 | /* | |
430 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
431 | * rate, etc. This function is non atomic and can be called multiple times, | |
432 | * it can refer to the runtime info. | |
433 | */ | |
434 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
435 | { | |
436 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
437 | struct snd_soc_platform *platform = rtd->platform; | |
438 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
439 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
440 | int ret = 0; | |
441 | ||
b8c0dab9 | 442 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
443 | |
444 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
445 | ret = rtd->dai_link->ops->prepare(substream); | |
446 | if (ret < 0) { | |
25bfe662 | 447 | pr_err("asoc: machine prepare error: %d\n", ret); |
ddee627c LG |
448 | goto out; |
449 | } | |
450 | } | |
451 | ||
452 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
453 | ret = platform->driver->ops->prepare(substream); | |
454 | if (ret < 0) { | |
25bfe662 MB |
455 | dev_err(platform->dev, "platform prepare error: %d\n", |
456 | ret); | |
ddee627c LG |
457 | goto out; |
458 | } | |
459 | } | |
460 | ||
461 | if (codec_dai->driver->ops->prepare) { | |
462 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); | |
463 | if (ret < 0) { | |
25bfe662 MB |
464 | dev_err(codec_dai->dev, "DAI prepare error: %d\n", |
465 | ret); | |
ddee627c LG |
466 | goto out; |
467 | } | |
468 | } | |
469 | ||
470 | if (cpu_dai->driver->ops->prepare) { | |
471 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); | |
472 | if (ret < 0) { | |
25bfe662 MB |
473 | dev_err(cpu_dai->dev, "DAI prepare error: %d\n", |
474 | ret); | |
ddee627c LG |
475 | goto out; |
476 | } | |
477 | } | |
478 | ||
479 | /* cancel any delayed stream shutdown that is pending */ | |
480 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
481 | codec_dai->pop_wait) { | |
482 | codec_dai->pop_wait = 0; | |
483 | cancel_delayed_work(&rtd->delayed_work); | |
484 | } | |
485 | ||
d9b0951b LG |
486 | snd_soc_dapm_stream_event(rtd, substream->stream, |
487 | SND_SOC_DAPM_STREAM_START); | |
ddee627c LG |
488 | |
489 | snd_soc_dai_digital_mute(codec_dai, 0); | |
490 | ||
491 | out: | |
b8c0dab9 | 492 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
493 | return ret; |
494 | } | |
495 | ||
496 | /* | |
497 | * Called by ALSA when the hardware params are set by application. This | |
498 | * function can also be called multiple times and can allocate buffers | |
499 | * (using snd_pcm_lib_* ). It's non-atomic. | |
500 | */ | |
501 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
502 | struct snd_pcm_hw_params *params) | |
503 | { | |
504 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
505 | struct snd_soc_platform *platform = rtd->platform; | |
506 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
507 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
508 | int ret = 0; | |
509 | ||
b8c0dab9 | 510 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
511 | |
512 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
513 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
514 | if (ret < 0) { | |
25bfe662 | 515 | pr_err("asoc: machine hw_params failed: %d\n", ret); |
ddee627c LG |
516 | goto out; |
517 | } | |
518 | } | |
519 | ||
520 | if (codec_dai->driver->ops->hw_params) { | |
521 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); | |
522 | if (ret < 0) { | |
25bfe662 MB |
523 | dev_err(codec_dai->dev, "can't set %s hw params: %d\n", |
524 | codec_dai->name, ret); | |
ddee627c LG |
525 | goto codec_err; |
526 | } | |
527 | } | |
528 | ||
529 | if (cpu_dai->driver->ops->hw_params) { | |
530 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); | |
531 | if (ret < 0) { | |
25bfe662 MB |
532 | dev_err(cpu_dai->dev, "%s hw params failed: %d\n", |
533 | cpu_dai->name, ret); | |
ddee627c LG |
534 | goto interface_err; |
535 | } | |
536 | } | |
537 | ||
538 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
539 | ret = platform->driver->ops->hw_params(substream, params); | |
540 | if (ret < 0) { | |
25bfe662 MB |
541 | dev_err(platform->dev, "%s hw params failed: %d\n", |
542 | platform->name, ret); | |
ddee627c LG |
543 | goto platform_err; |
544 | } | |
545 | } | |
546 | ||
17841020 DA |
547 | /* store the rate for each DAIs */ |
548 | cpu_dai->rate = params_rate(params); | |
549 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
550 | |
551 | out: | |
b8c0dab9 | 552 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
553 | return ret; |
554 | ||
555 | platform_err: | |
556 | if (cpu_dai->driver->ops->hw_free) | |
557 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
558 | ||
559 | interface_err: | |
560 | if (codec_dai->driver->ops->hw_free) | |
561 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
562 | ||
563 | codec_err: | |
564 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
565 | rtd->dai_link->ops->hw_free(substream); | |
566 | ||
b8c0dab9 | 567 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
568 | return ret; |
569 | } | |
570 | ||
571 | /* | |
572 | * Frees resources allocated by hw_params, can be called multiple times | |
573 | */ | |
574 | static int soc_pcm_hw_free(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_soc_codec *codec = rtd->codec; | |
581 | ||
b8c0dab9 | 582 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
583 | |
584 | /* apply codec digital mute */ | |
585 | if (!codec->active) | |
586 | snd_soc_dai_digital_mute(codec_dai, 1); | |
587 | ||
588 | /* free any machine hw params */ | |
589 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
590 | rtd->dai_link->ops->hw_free(substream); | |
591 | ||
592 | /* free any DMA resources */ | |
593 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
594 | platform->driver->ops->hw_free(substream); | |
595 | ||
596 | /* now free hw params for the DAIs */ | |
597 | if (codec_dai->driver->ops->hw_free) | |
598 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
599 | ||
600 | if (cpu_dai->driver->ops->hw_free) | |
601 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
602 | ||
b8c0dab9 | 603 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
604 | return 0; |
605 | } | |
606 | ||
607 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
608 | { | |
609 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
610 | struct snd_soc_platform *platform = rtd->platform; | |
611 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
612 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
613 | int ret; | |
614 | ||
615 | if (codec_dai->driver->ops->trigger) { | |
616 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); | |
617 | if (ret < 0) | |
618 | return ret; | |
619 | } | |
620 | ||
621 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
622 | ret = platform->driver->ops->trigger(substream, cmd); | |
623 | if (ret < 0) | |
624 | return ret; | |
625 | } | |
626 | ||
627 | if (cpu_dai->driver->ops->trigger) { | |
628 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); | |
629 | if (ret < 0) | |
630 | return ret; | |
631 | } | |
632 | return 0; | |
633 | } | |
634 | ||
07bf84aa LG |
635 | int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, int cmd) |
636 | { | |
637 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
638 | struct snd_soc_platform *platform = rtd->platform; | |
639 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
640 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
641 | int ret; | |
642 | ||
643 | if (codec_dai->driver->ops->bespoke_trigger) { | |
644 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); | |
645 | if (ret < 0) | |
646 | return ret; | |
647 | } | |
648 | ||
649 | if (platform->driver->bespoke_trigger) { | |
650 | ret = platform->driver->bespoke_trigger(substream, cmd); | |
651 | if (ret < 0) | |
652 | return ret; | |
653 | } | |
654 | ||
655 | if (cpu_dai->driver->ops->bespoke_trigger) { | |
656 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); | |
657 | if (ret < 0) | |
658 | return ret; | |
659 | } | |
660 | return 0; | |
661 | } | |
ddee627c LG |
662 | /* |
663 | * soc level wrapper for pointer callback | |
664 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
665 | * the runtime->delay will be updated accordingly. | |
666 | */ | |
667 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
668 | { | |
669 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
670 | struct snd_soc_platform *platform = rtd->platform; | |
671 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
672 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
673 | struct snd_pcm_runtime *runtime = substream->runtime; | |
674 | snd_pcm_uframes_t offset = 0; | |
675 | snd_pcm_sframes_t delay = 0; | |
676 | ||
677 | if (platform->driver->ops && platform->driver->ops->pointer) | |
678 | offset = platform->driver->ops->pointer(substream); | |
679 | ||
680 | if (cpu_dai->driver->ops->delay) | |
681 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
682 | ||
683 | if (codec_dai->driver->ops->delay) | |
684 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
685 | ||
686 | if (platform->driver->delay) | |
687 | delay += platform->driver->delay(substream, codec_dai); | |
688 | ||
689 | runtime->delay = delay; | |
690 | ||
691 | return offset; | |
692 | } | |
693 | ||
01d7584c LG |
694 | /* connect a FE and BE */ |
695 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
696 | struct snd_soc_pcm_runtime *be, int stream) | |
697 | { | |
698 | struct snd_soc_dpcm *dpcm; | |
699 | ||
700 | /* only add new dpcms */ | |
701 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
702 | if (dpcm->be == be && dpcm->fe == fe) | |
703 | return 0; | |
704 | } | |
705 | ||
706 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
707 | if (!dpcm) | |
708 | return -ENOMEM; | |
709 | ||
710 | dpcm->be = be; | |
711 | dpcm->fe = fe; | |
712 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
713 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
714 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
715 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
716 | ||
717 | dev_dbg(fe->dev, " connected new DPCM %s path %s %s %s\n", | |
718 | stream ? "capture" : "playback", fe->dai_link->name, | |
719 | stream ? "<-" : "->", be->dai_link->name); | |
720 | ||
f86dcef8 LG |
721 | #ifdef CONFIG_DEBUG_FS |
722 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
723 | fe->debugfs_dpcm_root, &dpcm->state); | |
724 | #endif | |
01d7584c LG |
725 | return 1; |
726 | } | |
727 | ||
728 | /* reparent a BE onto another FE */ | |
729 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
730 | struct snd_soc_pcm_runtime *be, int stream) | |
731 | { | |
732 | struct snd_soc_dpcm *dpcm; | |
733 | struct snd_pcm_substream *fe_substream, *be_substream; | |
734 | ||
735 | /* reparent if BE is connected to other FEs */ | |
736 | if (!be->dpcm[stream].users) | |
737 | return; | |
738 | ||
739 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
740 | ||
741 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
742 | if (dpcm->fe == fe) | |
743 | continue; | |
744 | ||
745 | dev_dbg(fe->dev, " reparent %s path %s %s %s\n", | |
746 | stream ? "capture" : "playback", | |
747 | dpcm->fe->dai_link->name, | |
748 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
749 | ||
750 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
751 | be_substream->runtime = fe_substream->runtime; | |
752 | break; | |
753 | } | |
754 | } | |
755 | ||
756 | /* disconnect a BE and FE */ | |
757 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
758 | { | |
759 | struct snd_soc_dpcm *dpcm, *d; | |
760 | ||
761 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
762 | dev_dbg(fe->dev, "BE %s disconnect check for %s\n", | |
763 | stream ? "capture" : "playback", | |
764 | dpcm->be->dai_link->name); | |
765 | ||
766 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
767 | continue; | |
768 | ||
769 | dev_dbg(fe->dev, " freed DSP %s path %s %s %s\n", | |
770 | stream ? "capture" : "playback", fe->dai_link->name, | |
771 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
772 | ||
773 | /* BEs still alive need new FE */ | |
774 | dpcm_be_reparent(fe, dpcm->be, stream); | |
775 | ||
f86dcef8 LG |
776 | #ifdef CONFIG_DEBUG_FS |
777 | debugfs_remove(dpcm->debugfs_state); | |
778 | #endif | |
01d7584c LG |
779 | list_del(&dpcm->list_be); |
780 | list_del(&dpcm->list_fe); | |
781 | kfree(dpcm); | |
782 | } | |
783 | } | |
784 | ||
785 | /* get BE for DAI widget and stream */ | |
786 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
787 | struct snd_soc_dapm_widget *widget, int stream) | |
788 | { | |
789 | struct snd_soc_pcm_runtime *be; | |
790 | int i; | |
791 | ||
792 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
793 | for (i = 0; i < card->num_links; i++) { | |
794 | be = &card->rtd[i]; | |
795 | ||
796 | if (be->cpu_dai->playback_widget == widget || | |
797 | be->codec_dai->playback_widget == widget) | |
798 | return be; | |
799 | } | |
800 | } else { | |
801 | ||
802 | for (i = 0; i < card->num_links; i++) { | |
803 | be = &card->rtd[i]; | |
804 | ||
805 | if (be->cpu_dai->capture_widget == widget || | |
806 | be->codec_dai->capture_widget == widget) | |
807 | return be; | |
808 | } | |
809 | } | |
810 | ||
811 | dev_err(card->dev, "can't get %s BE for %s\n", | |
812 | stream ? "capture" : "playback", widget->name); | |
813 | return NULL; | |
814 | } | |
815 | ||
816 | static inline struct snd_soc_dapm_widget * | |
817 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
818 | { | |
819 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
820 | return rtd->cpu_dai->playback_widget; | |
821 | else | |
822 | return rtd->cpu_dai->capture_widget; | |
823 | } | |
824 | ||
825 | static inline struct snd_soc_dapm_widget * | |
826 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
827 | { | |
828 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
829 | return rtd->codec_dai->playback_widget; | |
830 | else | |
831 | return rtd->codec_dai->capture_widget; | |
832 | } | |
833 | ||
834 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
835 | struct snd_soc_dapm_widget *widget) | |
836 | { | |
837 | int i; | |
838 | ||
839 | for (i = 0; i < list->num_widgets; i++) { | |
840 | if (widget == list->widgets[i]) | |
841 | return 1; | |
842 | } | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
848 | int stream, struct snd_soc_dapm_widget_list **list_) | |
849 | { | |
850 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
851 | struct snd_soc_dapm_widget_list *list; | |
852 | int paths; | |
853 | ||
854 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
855 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
856 | if (list == NULL) | |
857 | return -ENOMEM; | |
858 | ||
859 | /* get number of valid DAI paths and their widgets */ | |
860 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
861 | ||
862 | dev_dbg(fe->dev, "found %d audio %s paths\n", paths, | |
863 | stream ? "capture" : "playback"); | |
864 | ||
865 | *list_ = list; | |
866 | return paths; | |
867 | } | |
868 | ||
869 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
870 | { | |
871 | kfree(*list); | |
872 | } | |
873 | ||
874 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
875 | struct snd_soc_dapm_widget_list **list_) | |
876 | { | |
877 | struct snd_soc_dpcm *dpcm; | |
878 | struct snd_soc_dapm_widget_list *list = *list_; | |
879 | struct snd_soc_dapm_widget *widget; | |
880 | int prune = 0; | |
881 | ||
882 | /* Destroy any old FE <--> BE connections */ | |
883 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
884 | ||
885 | /* is there a valid CPU DAI widget for this BE */ | |
886 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
887 | ||
888 | /* prune the BE if it's no longer in our active list */ | |
889 | if (widget && widget_in_list(list, widget)) | |
890 | continue; | |
891 | ||
892 | /* is there a valid CODEC DAI widget for this BE */ | |
893 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
894 | ||
895 | /* prune the BE if it's no longer in our active list */ | |
896 | if (widget && widget_in_list(list, widget)) | |
897 | continue; | |
898 | ||
899 | dev_dbg(fe->dev, "pruning %s BE %s for %s\n", | |
900 | stream ? "capture" : "playback", | |
901 | dpcm->be->dai_link->name, fe->dai_link->name); | |
902 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
903 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
904 | prune++; | |
905 | } | |
906 | ||
907 | dev_dbg(fe->dev, "found %d old BE paths for pruning\n", prune); | |
908 | return prune; | |
909 | } | |
910 | ||
911 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
912 | struct snd_soc_dapm_widget_list **list_) | |
913 | { | |
914 | struct snd_soc_card *card = fe->card; | |
915 | struct snd_soc_dapm_widget_list *list = *list_; | |
916 | struct snd_soc_pcm_runtime *be; | |
917 | int i, new = 0, err; | |
918 | ||
919 | /* Create any new FE <--> BE connections */ | |
920 | for (i = 0; i < list->num_widgets; i++) { | |
921 | ||
922 | if (list->widgets[i]->id != snd_soc_dapm_dai) | |
923 | continue; | |
924 | ||
925 | /* is there a valid BE rtd for this widget */ | |
926 | be = dpcm_get_be(card, list->widgets[i], stream); | |
927 | if (!be) { | |
928 | dev_err(fe->dev, "no BE found for %s\n", | |
929 | list->widgets[i]->name); | |
930 | continue; | |
931 | } | |
932 | ||
933 | /* make sure BE is a real BE */ | |
934 | if (!be->dai_link->no_pcm) | |
935 | continue; | |
936 | ||
937 | /* don't connect if FE is not running */ | |
938 | if (!fe->dpcm[stream].runtime) | |
939 | continue; | |
940 | ||
941 | /* newly connected FE and BE */ | |
942 | err = dpcm_be_connect(fe, be, stream); | |
943 | if (err < 0) { | |
944 | dev_err(fe->dev, "can't connect %s\n", | |
945 | list->widgets[i]->name); | |
946 | break; | |
947 | } else if (err == 0) /* already connected */ | |
948 | continue; | |
949 | ||
950 | /* new */ | |
951 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
952 | new++; | |
953 | } | |
954 | ||
955 | dev_dbg(fe->dev, "found %d new BE paths\n", new); | |
956 | return new; | |
957 | } | |
958 | ||
959 | /* | |
960 | * Find the corresponding BE DAIs that source or sink audio to this | |
961 | * FE substream. | |
962 | */ | |
963 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
964 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
965 | { | |
966 | if (new) | |
967 | return dpcm_add_paths(fe, stream, list); | |
968 | else | |
969 | return dpcm_prune_paths(fe, stream, list); | |
970 | } | |
971 | ||
972 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
973 | { | |
974 | struct snd_soc_dpcm *dpcm; | |
975 | ||
976 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
977 | dpcm->be->dpcm[stream].runtime_update = | |
978 | SND_SOC_DPCM_UPDATE_NO; | |
979 | } | |
980 | ||
981 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
982 | int stream) | |
983 | { | |
984 | struct snd_soc_dpcm *dpcm; | |
985 | ||
986 | /* disable any enabled and non active backends */ | |
987 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
988 | ||
989 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
990 | struct snd_pcm_substream *be_substream = | |
991 | snd_soc_dpcm_get_substream(be, stream); | |
992 | ||
993 | if (be->dpcm[stream].users == 0) | |
994 | dev_err(be->dev, "no users %s at close - state %d\n", | |
995 | stream ? "capture" : "playback", | |
996 | be->dpcm[stream].state); | |
997 | ||
998 | if (--be->dpcm[stream].users != 0) | |
999 | continue; | |
1000 | ||
1001 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1002 | continue; | |
1003 | ||
1004 | soc_pcm_close(be_substream); | |
1005 | be_substream->runtime = NULL; | |
1006 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1011 | { | |
1012 | struct snd_soc_dpcm *dpcm; | |
1013 | int err, count = 0; | |
1014 | ||
1015 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1016 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1017 | ||
1018 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1019 | struct snd_pcm_substream *be_substream = | |
1020 | snd_soc_dpcm_get_substream(be, stream); | |
1021 | ||
1022 | /* is this op for this BE ? */ | |
1023 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1024 | continue; | |
1025 | ||
1026 | /* first time the dpcm is open ? */ | |
1027 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
1028 | dev_err(be->dev, "too many users %s at open %d\n", | |
1029 | stream ? "capture" : "playback", | |
1030 | be->dpcm[stream].state); | |
1031 | ||
1032 | if (be->dpcm[stream].users++ != 0) | |
1033 | continue; | |
1034 | ||
1035 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1036 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1037 | continue; | |
1038 | ||
1039 | dev_dbg(be->dev, "dpcm: open BE %s\n", be->dai_link->name); | |
1040 | ||
1041 | be_substream->runtime = be->dpcm[stream].runtime; | |
1042 | err = soc_pcm_open(be_substream); | |
1043 | if (err < 0) { | |
1044 | dev_err(be->dev, "BE open failed %d\n", err); | |
1045 | be->dpcm[stream].users--; | |
1046 | if (be->dpcm[stream].users < 0) | |
1047 | dev_err(be->dev, "no users %s at unwind %d\n", | |
1048 | stream ? "capture" : "playback", | |
1049 | be->dpcm[stream].state); | |
1050 | ||
1051 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1052 | goto unwind; | |
1053 | } | |
1054 | ||
1055 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1056 | count++; | |
1057 | } | |
1058 | ||
1059 | return count; | |
1060 | ||
1061 | unwind: | |
1062 | /* disable any enabled and non active backends */ | |
1063 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1064 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1065 | struct snd_pcm_substream *be_substream = | |
1066 | snd_soc_dpcm_get_substream(be, stream); | |
1067 | ||
1068 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1069 | continue; | |
1070 | ||
1071 | if (be->dpcm[stream].users == 0) | |
1072 | dev_err(be->dev, "no users %s at close %d\n", | |
1073 | stream ? "capture" : "playback", | |
1074 | be->dpcm[stream].state); | |
1075 | ||
1076 | if (--be->dpcm[stream].users != 0) | |
1077 | continue; | |
1078 | ||
1079 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1080 | continue; | |
1081 | ||
1082 | soc_pcm_close(be_substream); | |
1083 | be_substream->runtime = NULL; | |
1084 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1085 | } | |
1086 | ||
1087 | return err; | |
1088 | } | |
1089 | ||
1090 | void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) | |
1091 | { | |
1092 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1093 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1094 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1095 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1096 | ||
1097 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1098 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1099 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1100 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1101 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1102 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1103 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1104 | } else { | |
1105 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1106 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1107 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1108 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1109 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1110 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1115 | { | |
1116 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1117 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1118 | int stream = fe_substream->stream, ret = 0; | |
1119 | ||
1120 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1121 | ||
1122 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1123 | if (ret < 0) { | |
1124 | dev_err(fe->dev,"dpcm: failed to start some BEs %d\n", ret); | |
1125 | goto be_err; | |
1126 | } | |
1127 | ||
1128 | dev_dbg(fe->dev, "dpcm: open FE %s\n", fe->dai_link->name); | |
1129 | ||
1130 | /* start the DAI frontend */ | |
1131 | ret = soc_pcm_open(fe_substream); | |
1132 | if (ret < 0) { | |
1133 | dev_err(fe->dev,"dpcm: failed to start FE %d\n", ret); | |
1134 | goto unwind; | |
1135 | } | |
1136 | ||
1137 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1138 | ||
1139 | dpcm_set_fe_runtime(fe_substream); | |
1140 | snd_pcm_limit_hw_rates(runtime); | |
1141 | ||
1142 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1143 | return 0; | |
1144 | ||
1145 | unwind: | |
1146 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1147 | be_err: | |
1148 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1149 | return ret; | |
1150 | } | |
1151 | ||
1152 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1153 | { | |
1154 | struct snd_soc_dpcm *dpcm; | |
1155 | ||
1156 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1157 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1158 | ||
1159 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1160 | struct snd_pcm_substream *be_substream = | |
1161 | snd_soc_dpcm_get_substream(be, stream); | |
1162 | ||
1163 | /* is this op for this BE ? */ | |
1164 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1165 | continue; | |
1166 | ||
1167 | if (be->dpcm[stream].users == 0) | |
1168 | dev_err(be->dev, "no users %s at close - state %d\n", | |
1169 | stream ? "capture" : "playback", | |
1170 | be->dpcm[stream].state); | |
1171 | ||
1172 | if (--be->dpcm[stream].users != 0) | |
1173 | continue; | |
1174 | ||
1175 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1176 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1177 | continue; | |
1178 | ||
1179 | dev_dbg(be->dev, "dpcm: close BE %s\n", | |
1180 | dpcm->fe->dai_link->name); | |
1181 | ||
1182 | soc_pcm_close(be_substream); | |
1183 | be_substream->runtime = NULL; | |
1184 | ||
1185 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1186 | } | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1191 | { | |
1192 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1193 | int stream = substream->stream; | |
1194 | ||
1195 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1196 | ||
1197 | /* shutdown the BEs */ | |
1198 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1199 | ||
1200 | dev_dbg(fe->dev, "dpcm: close FE %s\n", fe->dai_link->name); | |
1201 | ||
1202 | /* now shutdown the frontend */ | |
1203 | soc_pcm_close(substream); | |
1204 | ||
1205 | /* run the stream event for each BE */ | |
1206 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1207 | ||
1208 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1209 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1214 | { | |
1215 | struct snd_soc_dpcm *dpcm; | |
1216 | ||
1217 | /* only hw_params backends that are either sinks or sources | |
1218 | * to this frontend DAI */ | |
1219 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1220 | ||
1221 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1222 | struct snd_pcm_substream *be_substream = | |
1223 | snd_soc_dpcm_get_substream(be, stream); | |
1224 | ||
1225 | /* is this op for this BE ? */ | |
1226 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1227 | continue; | |
1228 | ||
1229 | /* only free hw when no longer used - check all FEs */ | |
1230 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1231 | continue; | |
1232 | ||
1233 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1234 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1235 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1236 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1237 | continue; | |
1238 | ||
1239 | dev_dbg(be->dev, "dpcm: hw_free BE %s\n", | |
1240 | dpcm->fe->dai_link->name); | |
1241 | ||
1242 | soc_pcm_hw_free(be_substream); | |
1243 | ||
1244 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1245 | } | |
1246 | ||
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) | |
1251 | { | |
1252 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1253 | int err, stream = substream->stream; | |
1254 | ||
1255 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1256 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1257 | ||
1258 | dev_dbg(fe->dev, "dpcm: hw_free FE %s\n", fe->dai_link->name); | |
1259 | ||
1260 | /* call hw_free on the frontend */ | |
1261 | err = soc_pcm_hw_free(substream); | |
1262 | if (err < 0) | |
1263 | dev_err(fe->dev,"dpcm: hw_free FE %s failed\n", | |
1264 | fe->dai_link->name); | |
1265 | ||
1266 | /* only hw_params backends that are either sinks or sources | |
1267 | * to this frontend DAI */ | |
1268 | err = dpcm_be_dai_hw_free(fe, stream); | |
1269 | ||
1270 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1271 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1272 | ||
1273 | mutex_unlock(&fe->card->mutex); | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1278 | { | |
1279 | struct snd_soc_dpcm *dpcm; | |
1280 | int ret; | |
1281 | ||
1282 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1283 | ||
1284 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1285 | struct snd_pcm_substream *be_substream = | |
1286 | snd_soc_dpcm_get_substream(be, stream); | |
1287 | ||
1288 | /* is this op for this BE ? */ | |
1289 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1290 | continue; | |
1291 | ||
1292 | /* only allow hw_params() if no connected FEs are running */ | |
1293 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1294 | continue; | |
1295 | ||
1296 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1297 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1298 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1299 | continue; | |
1300 | ||
1301 | dev_dbg(be->dev, "dpcm: hw_params BE %s\n", | |
1302 | dpcm->fe->dai_link->name); | |
1303 | ||
1304 | /* copy params for each dpcm */ | |
1305 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1306 | sizeof(struct snd_pcm_hw_params)); | |
1307 | ||
1308 | /* perform any hw_params fixups */ | |
1309 | if (be->dai_link->be_hw_params_fixup) { | |
1310 | ret = be->dai_link->be_hw_params_fixup(be, | |
1311 | &dpcm->hw_params); | |
1312 | if (ret < 0) { | |
1313 | dev_err(be->dev, | |
1314 | "dpcm: hw_params BE fixup failed %d\n", | |
1315 | ret); | |
1316 | goto unwind; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1321 | if (ret < 0) { | |
1322 | dev_err(dpcm->be->dev, | |
1323 | "dpcm: hw_params BE failed %d\n", ret); | |
1324 | goto unwind; | |
1325 | } | |
1326 | ||
1327 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1328 | } | |
1329 | return 0; | |
1330 | ||
1331 | unwind: | |
1332 | /* disable any enabled and non active backends */ | |
1333 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1334 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1335 | struct snd_pcm_substream *be_substream = | |
1336 | snd_soc_dpcm_get_substream(be, stream); | |
1337 | ||
1338 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1339 | continue; | |
1340 | ||
1341 | /* only allow hw_free() if no connected FEs are running */ | |
1342 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1343 | continue; | |
1344 | ||
1345 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1346 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1347 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1348 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1349 | continue; | |
1350 | ||
1351 | soc_pcm_hw_free(be_substream); | |
1352 | } | |
1353 | ||
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, | |
1358 | struct snd_pcm_hw_params *params) | |
1359 | { | |
1360 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1361 | int ret, stream = substream->stream; | |
1362 | ||
1363 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1364 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1365 | ||
1366 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1367 | sizeof(struct snd_pcm_hw_params)); | |
1368 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1369 | if (ret < 0) { | |
1370 | dev_err(fe->dev,"dpcm: hw_params BE failed %d\n", ret); | |
1371 | goto out; | |
1372 | } | |
1373 | ||
1374 | dev_dbg(fe->dev, "dpcm: hw_params FE %s rate %d chan %x fmt %d\n", | |
1375 | fe->dai_link->name, params_rate(params), | |
1376 | params_channels(params), params_format(params)); | |
1377 | ||
1378 | /* call hw_params on the frontend */ | |
1379 | ret = soc_pcm_hw_params(substream, params); | |
1380 | if (ret < 0) { | |
1381 | dev_err(fe->dev,"dpcm: hw_params FE failed %d\n", ret); | |
1382 | dpcm_be_dai_hw_free(fe, stream); | |
1383 | } else | |
1384 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1385 | ||
1386 | out: | |
1387 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1388 | mutex_unlock(&fe->card->mutex); | |
1389 | return ret; | |
1390 | } | |
1391 | ||
1392 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1393 | struct snd_pcm_substream *substream, int cmd) | |
1394 | { | |
1395 | int ret; | |
1396 | ||
1397 | dev_dbg(dpcm->be->dev, "dpcm: trigger BE %s cmd %d\n", | |
1398 | dpcm->fe->dai_link->name, cmd); | |
1399 | ||
1400 | ret = soc_pcm_trigger(substream, cmd); | |
1401 | if (ret < 0) | |
1402 | dev_err(dpcm->be->dev,"dpcm: trigger BE failed %d\n", ret); | |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd) | |
1408 | { | |
1409 | struct snd_soc_dpcm *dpcm; | |
1410 | int ret = 0; | |
1411 | ||
1412 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1413 | ||
1414 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1415 | struct snd_pcm_substream *be_substream = | |
1416 | snd_soc_dpcm_get_substream(be, stream); | |
1417 | ||
1418 | /* is this op for this BE ? */ | |
1419 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1420 | continue; | |
1421 | ||
1422 | switch (cmd) { | |
1423 | case SNDRV_PCM_TRIGGER_START: | |
1424 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1425 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1426 | continue; | |
1427 | ||
1428 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1429 | if (ret) | |
1430 | return ret; | |
1431 | ||
1432 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1433 | break; | |
1434 | case SNDRV_PCM_TRIGGER_RESUME: | |
1435 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1436 | continue; | |
1437 | ||
1438 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1439 | if (ret) | |
1440 | return ret; | |
1441 | ||
1442 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1443 | break; | |
1444 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1445 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1446 | continue; | |
1447 | ||
1448 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1449 | if (ret) | |
1450 | return ret; | |
1451 | ||
1452 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1453 | break; | |
1454 | case SNDRV_PCM_TRIGGER_STOP: | |
1455 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1456 | continue; | |
1457 | ||
1458 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1459 | continue; | |
1460 | ||
1461 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1462 | if (ret) | |
1463 | return ret; | |
1464 | ||
1465 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1466 | break; | |
1467 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1468 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1469 | continue; | |
1470 | ||
1471 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1472 | continue; | |
1473 | ||
1474 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1475 | if (ret) | |
1476 | return ret; | |
1477 | ||
1478 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1479 | break; | |
1480 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1481 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1482 | continue; | |
1483 | ||
1484 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1485 | continue; | |
1486 | ||
1487 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1488 | if (ret) | |
1489 | return ret; | |
1490 | ||
1491 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1492 | break; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | return ret; | |
1497 | } | |
1498 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1499 | ||
1500 | int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) | |
1501 | { | |
1502 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1503 | int stream = substream->stream, ret; | |
1504 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1505 | ||
1506 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1507 | ||
1508 | switch (trigger) { | |
1509 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1510 | /* call trigger on the frontend before the backend. */ | |
1511 | ||
1512 | dev_dbg(fe->dev, "dpcm: pre trigger FE %s cmd %d\n", | |
1513 | fe->dai_link->name, cmd); | |
1514 | ||
1515 | ret = soc_pcm_trigger(substream, cmd); | |
1516 | if (ret < 0) { | |
1517 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1518 | goto out; | |
1519 | } | |
1520 | ||
1521 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1522 | break; | |
1523 | case SND_SOC_DPCM_TRIGGER_POST: | |
1524 | /* call trigger on the frontend after the backend. */ | |
1525 | ||
1526 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1527 | if (ret < 0) { | |
1528 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1529 | goto out; | |
1530 | } | |
1531 | ||
1532 | dev_dbg(fe->dev, "dpcm: post trigger FE %s cmd %d\n", | |
1533 | fe->dai_link->name, cmd); | |
1534 | ||
1535 | ret = soc_pcm_trigger(substream, cmd); | |
1536 | break; | |
07bf84aa LG |
1537 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1538 | /* bespoke trigger() - handles both FE and BEs */ | |
1539 | ||
1540 | dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd %d\n", | |
1541 | fe->dai_link->name, cmd); | |
1542 | ||
1543 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1544 | if (ret < 0) { | |
1545 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1546 | goto out; | |
1547 | } | |
1548 | break; | |
01d7584c LG |
1549 | default: |
1550 | dev_err(fe->dev, "dpcm: invalid trigger cmd %d for %s\n", cmd, | |
1551 | fe->dai_link->name); | |
1552 | ret = -EINVAL; | |
1553 | goto out; | |
1554 | } | |
1555 | ||
1556 | switch (cmd) { | |
1557 | case SNDRV_PCM_TRIGGER_START: | |
1558 | case SNDRV_PCM_TRIGGER_RESUME: | |
1559 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1560 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1561 | break; | |
1562 | case SNDRV_PCM_TRIGGER_STOP: | |
1563 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1564 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1565 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1566 | break; | |
1567 | } | |
1568 | ||
1569 | out: | |
1570 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1571 | return ret; | |
1572 | } | |
1573 | ||
1574 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1575 | { | |
1576 | struct snd_soc_dpcm *dpcm; | |
1577 | int ret = 0; | |
1578 | ||
1579 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1580 | ||
1581 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1582 | struct snd_pcm_substream *be_substream = | |
1583 | snd_soc_dpcm_get_substream(be, stream); | |
1584 | ||
1585 | /* is this op for this BE ? */ | |
1586 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1587 | continue; | |
1588 | ||
1589 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1590 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1591 | continue; | |
1592 | ||
1593 | dev_dbg(be->dev, "dpcm: prepare BE %s\n", | |
1594 | dpcm->fe->dai_link->name); | |
1595 | ||
1596 | ret = soc_pcm_prepare(be_substream); | |
1597 | if (ret < 0) { | |
1598 | dev_err(be->dev, "dpcm: backend prepare failed %d\n", | |
1599 | ret); | |
1600 | break; | |
1601 | } | |
1602 | ||
1603 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1604 | } | |
1605 | return ret; | |
1606 | } | |
1607 | ||
1608 | int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) | |
1609 | { | |
1610 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1611 | int stream = substream->stream, ret = 0; | |
1612 | ||
1613 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1614 | ||
1615 | dev_dbg(fe->dev, "dpcm: prepare FE %s\n", fe->dai_link->name); | |
1616 | ||
1617 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1618 | ||
1619 | /* there is no point preparing this FE if there are no BEs */ | |
1620 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
1621 | dev_err(fe->dev, "dpcm: no backend DAIs enabled for %s\n", | |
1622 | fe->dai_link->name); | |
1623 | ret = -EINVAL; | |
1624 | goto out; | |
1625 | } | |
1626 | ||
1627 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1628 | if (ret < 0) | |
1629 | goto out; | |
1630 | ||
1631 | /* call prepare on the frontend */ | |
1632 | ret = soc_pcm_prepare(substream); | |
1633 | if (ret < 0) { | |
1634 | dev_err(fe->dev,"dpcm: prepare FE %s failed\n", | |
1635 | fe->dai_link->name); | |
1636 | goto out; | |
1637 | } | |
1638 | ||
1639 | /* run the stream event for each BE */ | |
1640 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1641 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1642 | ||
1643 | out: | |
1644 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1645 | mutex_unlock(&fe->card->mutex); | |
1646 | ||
1647 | return ret; | |
1648 | } | |
1649 | ||
be3f3f2c LG |
1650 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1651 | unsigned int cmd, void *arg) | |
1652 | { | |
1653 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1654 | struct snd_soc_platform *platform = rtd->platform; | |
1655 | ||
1656 | if (platform->driver->ops->ioctl) | |
1657 | return platform->driver->ops->ioctl(substream, cmd, arg); | |
1658 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1659 | } | |
1660 | ||
618dae11 LG |
1661 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1662 | { | |
07bf84aa LG |
1663 | struct snd_pcm_substream *substream = |
1664 | snd_soc_dpcm_get_substream(fe, stream); | |
1665 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1666 | int err; |
1667 | ||
1668 | dev_dbg(fe->dev, "runtime %s close on FE %s\n", | |
1669 | stream ? "capture" : "playback", fe->dai_link->name); | |
1670 | ||
07bf84aa LG |
1671 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1672 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
1673 | dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd stop\n", | |
1674 | fe->dai_link->name); | |
1675 | ||
1676 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1677 | if (err < 0) | |
1678 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", err); | |
1679 | } else { | |
1680 | dev_dbg(fe->dev, "dpcm: trigger FE %s cmd stop\n", | |
1681 | fe->dai_link->name); | |
1682 | ||
1683 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1684 | if (err < 0) | |
1685 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", err); | |
1686 | } | |
618dae11 LG |
1687 | |
1688 | err = dpcm_be_dai_hw_free(fe, stream); | |
1689 | if (err < 0) | |
1690 | dev_err(fe->dev,"dpcm: hw_free FE failed %d\n", err); | |
1691 | ||
1692 | err = dpcm_be_dai_shutdown(fe, stream); | |
1693 | if (err < 0) | |
1694 | dev_err(fe->dev,"dpcm: shutdown FE failed %d\n", err); | |
1695 | ||
1696 | /* run the stream event for each BE */ | |
1697 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1698 | ||
1699 | return 0; | |
1700 | } | |
1701 | ||
1702 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1703 | { | |
07bf84aa LG |
1704 | struct snd_pcm_substream *substream = |
1705 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1706 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1707 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1708 | int ret; |
1709 | ||
1710 | dev_dbg(fe->dev, "runtime %s open on FE %s\n", | |
1711 | stream ? "capture" : "playback", fe->dai_link->name); | |
1712 | ||
1713 | /* Only start the BE if the FE is ready */ | |
1714 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1715 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1716 | return -EINVAL; | |
1717 | ||
1718 | /* startup must always be called for new BEs */ | |
1719 | ret = dpcm_be_dai_startup(fe, stream); | |
1720 | if (ret < 0) { | |
1721 | goto disconnect; | |
1722 | return ret; | |
1723 | } | |
1724 | ||
1725 | /* keep going if FE state is > open */ | |
1726 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1727 | return 0; | |
01d7584c | 1728 | |
618dae11 LG |
1729 | ret = dpcm_be_dai_hw_params(fe, stream); |
1730 | if (ret < 0) { | |
1731 | goto close; | |
1732 | return ret; | |
1733 | } | |
1734 | ||
1735 | /* keep going if FE state is > hw_params */ | |
1736 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1737 | return 0; | |
1738 | ||
1739 | ||
1740 | ret = dpcm_be_dai_prepare(fe, stream); | |
1741 | if (ret < 0) { | |
1742 | goto hw_free; | |
1743 | return ret; | |
1744 | } | |
1745 | ||
1746 | /* run the stream event for each BE */ | |
1747 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1748 | ||
1749 | /* keep going if FE state is > prepare */ | |
1750 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1751 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1752 | return 0; | |
1753 | ||
07bf84aa LG |
1754 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1755 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
1756 | dev_dbg(fe->dev, "dpcm: bespoke trigger FE %s cmd start\n", | |
1757 | fe->dai_link->name); | |
618dae11 | 1758 | |
07bf84aa LG |
1759 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1760 | if (ret < 0) { | |
1761 | dev_err(fe->dev,"dpcm: bespoke trigger FE failed %d\n", ret); | |
1762 | goto hw_free; | |
1763 | } | |
1764 | } else { | |
1765 | dev_dbg(fe->dev, "dpcm: trigger FE %s cmd start\n", | |
1766 | fe->dai_link->name); | |
1767 | ||
1768 | ret = dpcm_be_dai_trigger(fe, stream, | |
1769 | SNDRV_PCM_TRIGGER_START); | |
1770 | if (ret < 0) { | |
1771 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1772 | goto hw_free; | |
1773 | } | |
618dae11 LG |
1774 | } |
1775 | ||
1776 | return 0; | |
1777 | ||
1778 | hw_free: | |
1779 | dpcm_be_dai_hw_free(fe, stream); | |
1780 | close: | |
1781 | dpcm_be_dai_shutdown(fe, stream); | |
1782 | disconnect: | |
1783 | /* disconnect any non started BEs */ | |
1784 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1785 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1786 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1787 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1788 | } | |
1789 | ||
1790 | return ret; | |
1791 | } | |
1792 | ||
1793 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1794 | { | |
1795 | int ret; | |
1796 | ||
1797 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1798 | ret = dpcm_run_update_startup(fe, stream); | |
1799 | if (ret < 0) | |
1800 | dev_err(fe->dev, "failed to startup some BEs\n"); | |
1801 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1802 | ||
1803 | return ret; | |
1804 | } | |
1805 | ||
1806 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1807 | { | |
1808 | int ret; | |
1809 | ||
1810 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1811 | ret = dpcm_run_update_shutdown(fe, stream); | |
1812 | if (ret < 0) | |
1813 | dev_err(fe->dev, "failed to shutdown some BEs\n"); | |
1814 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1815 | ||
1816 | return ret; | |
1817 | } | |
1818 | ||
1819 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1820 | * any DAI links. | |
1821 | */ | |
1822 | int soc_dpcm_runtime_update(struct snd_soc_dapm_widget *widget) | |
1823 | { | |
1824 | struct snd_soc_card *card; | |
1825 | int i, old, new, paths; | |
1826 | ||
1827 | if (widget->codec) | |
1828 | card = widget->codec->card; | |
1829 | else if (widget->platform) | |
1830 | card = widget->platform->card; | |
1831 | else | |
1832 | return -EINVAL; | |
1833 | ||
1834 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1835 | for (i = 0; i < card->num_rtd; i++) { | |
1836 | struct snd_soc_dapm_widget_list *list; | |
1837 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1838 | ||
1839 | /* make sure link is FE */ | |
1840 | if (!fe->dai_link->dynamic) | |
1841 | continue; | |
1842 | ||
1843 | /* only check active links */ | |
1844 | if (!fe->cpu_dai->active) | |
1845 | continue; | |
1846 | ||
1847 | /* DAPM sync will call this to update DSP paths */ | |
1848 | dev_dbg(fe->dev, "DPCM runtime update for FE %s\n", | |
1849 | fe->dai_link->name); | |
1850 | ||
1851 | /* skip if FE doesn't have playback capability */ | |
1852 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1853 | goto capture; | |
1854 | ||
1855 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1856 | if (paths < 0) { | |
1857 | dev_warn(fe->dev, "%s no valid %s path\n", | |
1858 | fe->dai_link->name, "playback"); | |
1859 | mutex_unlock(&card->mutex); | |
1860 | return paths; | |
1861 | } | |
1862 | ||
1863 | /* update any new playback paths */ | |
1864 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1865 | if (new) { | |
1866 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1867 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1868 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1869 | } | |
1870 | ||
1871 | /* update any old playback paths */ | |
1872 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1873 | if (old) { | |
1874 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1875 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1876 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1877 | } | |
1878 | ||
1879 | capture: | |
1880 | /* skip if FE doesn't have capture capability */ | |
1881 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1882 | continue; | |
1883 | ||
1884 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1885 | if (paths < 0) { | |
1886 | dev_warn(fe->dev, "%s no valid %s path\n", | |
1887 | fe->dai_link->name, "capture"); | |
1888 | mutex_unlock(&card->mutex); | |
1889 | return paths; | |
1890 | } | |
1891 | ||
1892 | /* update any new capture paths */ | |
1893 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1894 | if (new) { | |
1895 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1896 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1897 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1898 | } | |
1899 | ||
1900 | /* update any old capture paths */ | |
1901 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1902 | if (old) { | |
1903 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1904 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1905 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1906 | } | |
1907 | ||
1908 | dpcm_path_put(&list); | |
1909 | } | |
1910 | ||
1911 | mutex_unlock(&card->mutex); | |
1912 | return 0; | |
1913 | } | |
01d7584c LG |
1914 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1915 | { | |
1916 | struct snd_soc_dpcm *dpcm; | |
1917 | struct list_head *clients = | |
1918 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1919 | ||
1920 | list_for_each_entry(dpcm, clients, list_be) { | |
1921 | ||
1922 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1923 | struct snd_soc_dai *dai = be->codec_dai; | |
1924 | struct snd_soc_dai_driver *drv = dai->driver; | |
1925 | ||
1926 | if (be->dai_link->ignore_suspend) | |
1927 | continue; | |
1928 | ||
1929 | dev_dbg(be->dev, "BE digital mute %s\n", be->dai_link->name); | |
1930 | ||
1931 | if (drv->ops->digital_mute && dai->playback_active) | |
1932 | drv->ops->digital_mute(dai, mute); | |
1933 | } | |
1934 | ||
1935 | return 0; | |
1936 | } | |
1937 | ||
1938 | int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) | |
1939 | { | |
1940 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1941 | struct snd_soc_dpcm *dpcm; | |
1942 | struct snd_soc_dapm_widget_list *list; | |
1943 | int ret; | |
1944 | int stream = fe_substream->stream; | |
1945 | ||
1946 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1947 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1948 | ||
1949 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
1950 | dev_warn(fe->dev, "asoc: %s no valid %s route\n", | |
1951 | fe->dai_link->name, stream ? "capture" : "playback"); | |
1952 | mutex_unlock(&fe->card->mutex); | |
1953 | return -EINVAL; | |
1954 | } | |
1955 | ||
1956 | /* calculate valid and active FE <-> BE dpcms */ | |
1957 | dpcm_process_paths(fe, stream, &list, 1); | |
1958 | ||
1959 | ret = dpcm_fe_dai_startup(fe_substream); | |
1960 | if (ret < 0) { | |
1961 | /* clean up all links */ | |
1962 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1963 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1964 | ||
1965 | dpcm_be_disconnect(fe, stream); | |
1966 | fe->dpcm[stream].runtime = NULL; | |
1967 | } | |
1968 | ||
1969 | dpcm_clear_pending_state(fe, stream); | |
1970 | dpcm_path_put(&list); | |
1971 | mutex_unlock(&fe->card->mutex); | |
1972 | return ret; | |
1973 | } | |
1974 | ||
1975 | int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) | |
1976 | { | |
1977 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1978 | struct snd_soc_dpcm *dpcm; | |
1979 | int stream = fe_substream->stream, ret; | |
1980 | ||
1981 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1982 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
1983 | ||
1984 | /* mark FE's links ready to prune */ | |
1985 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1986 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1987 | ||
1988 | dpcm_be_disconnect(fe, stream); | |
1989 | ||
1990 | fe->dpcm[stream].runtime = NULL; | |
1991 | mutex_unlock(&fe->card->mutex); | |
1992 | return ret; | |
1993 | } | |
1994 | ||
ddee627c LG |
1995 | /* create a new pcm */ |
1996 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
1997 | { | |
1998 | struct snd_soc_codec *codec = rtd->codec; | |
1999 | struct snd_soc_platform *platform = rtd->platform; | |
2000 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2001 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2002 | struct snd_pcm *pcm; | |
2003 | char new_name[64]; | |
2004 | int ret = 0, playback = 0, capture = 0; | |
2005 | ||
01d7584c LG |
2006 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
2007 | if (cpu_dai->driver->playback.channels_min) | |
2008 | playback = 1; | |
2009 | if (cpu_dai->driver->capture.channels_min) | |
2010 | capture = 1; | |
2011 | } else { | |
2012 | if (codec_dai->driver->playback.channels_min) | |
2013 | playback = 1; | |
2014 | if (codec_dai->driver->capture.channels_min) | |
2015 | capture = 1; | |
2016 | } | |
2017 | ||
2018 | /* create the PCM */ | |
2019 | if (rtd->dai_link->no_pcm) { | |
2020 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2021 | rtd->dai_link->stream_name); | |
2022 | ||
2023 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2024 | playback, capture, &pcm); | |
2025 | } else { | |
2026 | if (rtd->dai_link->dynamic) | |
2027 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2028 | rtd->dai_link->stream_name); | |
2029 | else | |
2030 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2031 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2032 | ||
2033 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2034 | capture, &pcm); | |
2035 | } | |
ddee627c LG |
2036 | if (ret < 0) { |
2037 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
2038 | return ret; | |
2039 | } | |
01d7584c | 2040 | dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2041 | |
2042 | /* DAPM dai link stream work */ | |
2043 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2044 | ||
2045 | rtd->pcm = pcm; | |
2046 | pcm->private_data = rtd; | |
01d7584c LG |
2047 | |
2048 | if (rtd->dai_link->no_pcm) { | |
2049 | if (playback) | |
2050 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2051 | if (capture) | |
2052 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2053 | goto out; | |
2054 | } | |
2055 | ||
2056 | /* ASoC PCM operations */ | |
2057 | if (rtd->dai_link->dynamic) { | |
2058 | rtd->ops.open = dpcm_fe_dai_open; | |
2059 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2060 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2061 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2062 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2063 | rtd->ops.close = dpcm_fe_dai_close; | |
2064 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2065 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2066 | } else { |
2067 | rtd->ops.open = soc_pcm_open; | |
2068 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2069 | rtd->ops.prepare = soc_pcm_prepare; | |
2070 | rtd->ops.trigger = soc_pcm_trigger; | |
2071 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2072 | rtd->ops.close = soc_pcm_close; | |
2073 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2074 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2075 | } |
2076 | ||
ddee627c | 2077 | if (platform->driver->ops) { |
01d7584c LG |
2078 | rtd->ops.ack = platform->driver->ops->ack; |
2079 | rtd->ops.copy = platform->driver->ops->copy; | |
2080 | rtd->ops.silence = platform->driver->ops->silence; | |
2081 | rtd->ops.page = platform->driver->ops->page; | |
2082 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2083 | } |
2084 | ||
2085 | if (playback) | |
01d7584c | 2086 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2087 | |
2088 | if (capture) | |
01d7584c | 2089 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2090 | |
2091 | if (platform->driver->pcm_new) { | |
2092 | ret = platform->driver->pcm_new(rtd); | |
2093 | if (ret < 0) { | |
2094 | pr_err("asoc: platform pcm constructor failed\n"); | |
2095 | return ret; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2100 | out: |
ddee627c LG |
2101 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
2102 | cpu_dai->name); | |
2103 | return ret; | |
2104 | } | |
01d7584c LG |
2105 | |
2106 | /* is the current PCM operation for this FE ? */ | |
2107 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2108 | { | |
2109 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2110 | return 1; | |
2111 | return 0; | |
2112 | } | |
2113 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2114 | ||
2115 | /* is the current PCM operation for this BE ? */ | |
2116 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2117 | struct snd_soc_pcm_runtime *be, int stream) | |
2118 | { | |
2119 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2120 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2121 | be->dpcm[stream].runtime_update)) | |
2122 | return 1; | |
2123 | return 0; | |
2124 | } | |
2125 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2126 | ||
2127 | /* get the substream for this BE */ | |
2128 | struct snd_pcm_substream * | |
2129 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2130 | { | |
2131 | return be->pcm->streams[stream].substream; | |
2132 | } | |
2133 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2134 | ||
2135 | /* get the BE runtime state */ | |
2136 | enum snd_soc_dpcm_state | |
2137 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2138 | { | |
2139 | return be->dpcm[stream].state; | |
2140 | } | |
2141 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2142 | ||
2143 | /* set the BE runtime state */ | |
2144 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2145 | int stream, enum snd_soc_dpcm_state state) | |
2146 | { | |
2147 | be->dpcm[stream].state = state; | |
2148 | } | |
2149 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2150 | ||
2151 | /* | |
2152 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2153 | * are not running, paused or suspended for the specified stream direction. | |
2154 | */ | |
2155 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2156 | struct snd_soc_pcm_runtime *be, int stream) | |
2157 | { | |
2158 | struct snd_soc_dpcm *dpcm; | |
2159 | int state; | |
2160 | ||
2161 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2162 | ||
2163 | if (dpcm->fe == fe) | |
2164 | continue; | |
2165 | ||
2166 | state = dpcm->fe->dpcm[stream].state; | |
2167 | if (state == SND_SOC_DPCM_STATE_START || | |
2168 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2169 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2170 | return 0; | |
2171 | } | |
2172 | ||
2173 | /* it's safe to free/stop this BE DAI */ | |
2174 | return 1; | |
2175 | } | |
2176 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2177 | ||
2178 | /* | |
2179 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2180 | * running, paused or suspended for the specified stream direction. | |
2181 | */ | |
2182 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2183 | struct snd_soc_pcm_runtime *be, int stream) | |
2184 | { | |
2185 | struct snd_soc_dpcm *dpcm; | |
2186 | int state; | |
2187 | ||
2188 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2189 | ||
2190 | if (dpcm->fe == fe) | |
2191 | continue; | |
2192 | ||
2193 | state = dpcm->fe->dpcm[stream].state; | |
2194 | if (state == SND_SOC_DPCM_STATE_START || | |
2195 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2196 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2197 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | /* it's safe to change hw_params */ | |
2202 | return 1; | |
2203 | } | |
2204 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2205 | |
07bf84aa LG |
2206 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2207 | int cmd, struct snd_soc_platform *platform) | |
2208 | { | |
2209 | if (platform->driver->ops->trigger) | |
2210 | return platform->driver->ops->trigger(substream, cmd); | |
2211 | return 0; | |
2212 | } | |
2213 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2214 | ||
f86dcef8 LG |
2215 | #ifdef CONFIG_DEBUG_FS |
2216 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2217 | { | |
2218 | switch (state) { | |
2219 | case SND_SOC_DPCM_STATE_NEW: | |
2220 | return "new"; | |
2221 | case SND_SOC_DPCM_STATE_OPEN: | |
2222 | return "open"; | |
2223 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2224 | return "hw_params"; | |
2225 | case SND_SOC_DPCM_STATE_PREPARE: | |
2226 | return "prepare"; | |
2227 | case SND_SOC_DPCM_STATE_START: | |
2228 | return "start"; | |
2229 | case SND_SOC_DPCM_STATE_STOP: | |
2230 | return "stop"; | |
2231 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2232 | return "suspend"; | |
2233 | case SND_SOC_DPCM_STATE_PAUSED: | |
2234 | return "paused"; | |
2235 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2236 | return "hw_free"; | |
2237 | case SND_SOC_DPCM_STATE_CLOSE: | |
2238 | return "close"; | |
2239 | } | |
2240 | ||
2241 | return "unknown"; | |
2242 | } | |
2243 | ||
2244 | static int dpcm_state_open_file(struct inode *inode, struct file *file) | |
2245 | { | |
2246 | file->private_data = inode->i_private; | |
2247 | return 0; | |
2248 | } | |
2249 | ||
2250 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, | |
2251 | int stream, char *buf, size_t size) | |
2252 | { | |
2253 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2254 | struct snd_soc_dpcm *dpcm; | |
2255 | ssize_t offset = 0; | |
2256 | ||
2257 | /* FE state */ | |
2258 | offset += snprintf(buf + offset, size - offset, | |
2259 | "[%s - %s]\n", fe->dai_link->name, | |
2260 | stream ? "Capture" : "Playback"); | |
2261 | ||
2262 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2263 | dpcm_state_string(fe->dpcm[stream].state)); | |
2264 | ||
2265 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2266 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2267 | offset += snprintf(buf + offset, size - offset, | |
2268 | "Hardware Params: " | |
2269 | "Format = %s, Channels = %d, Rate = %d\n", | |
2270 | snd_pcm_format_name(params_format(params)), | |
2271 | params_channels(params), | |
2272 | params_rate(params)); | |
2273 | ||
2274 | /* BEs state */ | |
2275 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2276 | ||
2277 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2278 | offset += snprintf(buf + offset, size - offset, | |
2279 | " No active DSP links\n"); | |
2280 | goto out; | |
2281 | } | |
2282 | ||
2283 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2284 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2285 | params = &dpcm->hw_params; | |
2286 | ||
2287 | offset += snprintf(buf + offset, size - offset, | |
2288 | "- %s\n", be->dai_link->name); | |
2289 | ||
2290 | offset += snprintf(buf + offset, size - offset, | |
2291 | " State: %s\n", | |
2292 | dpcm_state_string(be->dpcm[stream].state)); | |
2293 | ||
2294 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2295 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2296 | offset += snprintf(buf + offset, size - offset, | |
2297 | " Hardware Params: " | |
2298 | "Format = %s, Channels = %d, Rate = %d\n", | |
2299 | snd_pcm_format_name(params_format(params)), | |
2300 | params_channels(params), | |
2301 | params_rate(params)); | |
2302 | } | |
2303 | ||
2304 | out: | |
2305 | return offset; | |
2306 | } | |
2307 | ||
2308 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2309 | size_t count, loff_t *ppos) | |
2310 | { | |
2311 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2312 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2313 | char *buf; | |
2314 | ||
2315 | buf = kmalloc(out_count, GFP_KERNEL); | |
2316 | if (!buf) | |
2317 | return -ENOMEM; | |
2318 | ||
2319 | if (fe->cpu_dai->driver->playback.channels_min) | |
2320 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2321 | buf + offset, out_count - offset); | |
2322 | ||
2323 | if (fe->cpu_dai->driver->capture.channels_min) | |
2324 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2325 | buf + offset, out_count - offset); | |
2326 | ||
2327 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); | |
2328 | ||
2329 | kfree(buf); | |
2330 | ||
2331 | return ret; | |
2332 | } | |
2333 | ||
2334 | static const struct file_operations dpcm_state_fops = { | |
2335 | .open = dpcm_state_open_file, | |
2336 | .read = dpcm_state_read_file, | |
2337 | .llseek = default_llseek, | |
2338 | }; | |
2339 | ||
2340 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2341 | { | |
2342 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, | |
2343 | rtd->card->debugfs_card_root); | |
2344 | if (!rtd->debugfs_dpcm_root) { | |
2345 | dev_dbg(rtd->dev, | |
2346 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2347 | rtd->dai_link->name); | |
2348 | return -EINVAL; | |
2349 | } | |
2350 | ||
2351 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0644, | |
2352 | rtd->debugfs_dpcm_root, | |
2353 | rtd, &dpcm_state_fops); | |
2354 | ||
2355 | return 0; | |
2356 | } | |
2357 | #endif |