Commit | Line | Data |
---|---|---|
ddee627c LG |
1 | /* |
2 | * soc-pcm.c -- ALSA SoC PCM | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Copyright 2005 Openedhand Ltd. | |
6 | * Copyright (C) 2010 Slimlogic Ltd. | |
7 | * Copyright (C) 2010 Texas Instruments Inc. | |
8 | * | |
9 | * Authors: Liam Girdwood <lrg@ti.com> | |
10 | * Mark Brown <broonie@opensource.wolfsonmicro.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/delay.h> | |
d6652ef8 | 22 | #include <linux/pm_runtime.h> |
ddee627c LG |
23 | #include <linux/slab.h> |
24 | #include <linux/workqueue.h> | |
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 | ||
635 | /* | |
636 | * soc level wrapper for pointer callback | |
637 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
638 | * the runtime->delay will be updated accordingly. | |
639 | */ | |
640 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
641 | { | |
642 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
643 | struct snd_soc_platform *platform = rtd->platform; | |
644 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
645 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
646 | struct snd_pcm_runtime *runtime = substream->runtime; | |
647 | snd_pcm_uframes_t offset = 0; | |
648 | snd_pcm_sframes_t delay = 0; | |
649 | ||
650 | if (platform->driver->ops && platform->driver->ops->pointer) | |
651 | offset = platform->driver->ops->pointer(substream); | |
652 | ||
653 | if (cpu_dai->driver->ops->delay) | |
654 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
655 | ||
656 | if (codec_dai->driver->ops->delay) | |
657 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
658 | ||
659 | if (platform->driver->delay) | |
660 | delay += platform->driver->delay(substream, codec_dai); | |
661 | ||
662 | runtime->delay = delay; | |
663 | ||
664 | return offset; | |
665 | } | |
666 | ||
01d7584c LG |
667 | /* connect a FE and BE */ |
668 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
669 | struct snd_soc_pcm_runtime *be, int stream) | |
670 | { | |
671 | struct snd_soc_dpcm *dpcm; | |
672 | ||
673 | /* only add new dpcms */ | |
674 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
675 | if (dpcm->be == be && dpcm->fe == fe) | |
676 | return 0; | |
677 | } | |
678 | ||
679 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
680 | if (!dpcm) | |
681 | return -ENOMEM; | |
682 | ||
683 | dpcm->be = be; | |
684 | dpcm->fe = fe; | |
685 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
686 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
687 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
688 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
689 | ||
690 | dev_dbg(fe->dev, " connected new DPCM %s path %s %s %s\n", | |
691 | stream ? "capture" : "playback", fe->dai_link->name, | |
692 | stream ? "<-" : "->", be->dai_link->name); | |
693 | ||
f86dcef8 LG |
694 | #ifdef CONFIG_DEBUG_FS |
695 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
696 | fe->debugfs_dpcm_root, &dpcm->state); | |
697 | #endif | |
01d7584c LG |
698 | return 1; |
699 | } | |
700 | ||
701 | /* reparent a BE onto another FE */ | |
702 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
703 | struct snd_soc_pcm_runtime *be, int stream) | |
704 | { | |
705 | struct snd_soc_dpcm *dpcm; | |
706 | struct snd_pcm_substream *fe_substream, *be_substream; | |
707 | ||
708 | /* reparent if BE is connected to other FEs */ | |
709 | if (!be->dpcm[stream].users) | |
710 | return; | |
711 | ||
712 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
713 | ||
714 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
715 | if (dpcm->fe == fe) | |
716 | continue; | |
717 | ||
718 | dev_dbg(fe->dev, " reparent %s path %s %s %s\n", | |
719 | stream ? "capture" : "playback", | |
720 | dpcm->fe->dai_link->name, | |
721 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
722 | ||
723 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
724 | be_substream->runtime = fe_substream->runtime; | |
725 | break; | |
726 | } | |
727 | } | |
728 | ||
729 | /* disconnect a BE and FE */ | |
730 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
731 | { | |
732 | struct snd_soc_dpcm *dpcm, *d; | |
733 | ||
734 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
735 | dev_dbg(fe->dev, "BE %s disconnect check for %s\n", | |
736 | stream ? "capture" : "playback", | |
737 | dpcm->be->dai_link->name); | |
738 | ||
739 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
740 | continue; | |
741 | ||
742 | dev_dbg(fe->dev, " freed DSP %s path %s %s %s\n", | |
743 | stream ? "capture" : "playback", fe->dai_link->name, | |
744 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
745 | ||
746 | /* BEs still alive need new FE */ | |
747 | dpcm_be_reparent(fe, dpcm->be, stream); | |
748 | ||
f86dcef8 LG |
749 | #ifdef CONFIG_DEBUG_FS |
750 | debugfs_remove(dpcm->debugfs_state); | |
751 | #endif | |
01d7584c LG |
752 | list_del(&dpcm->list_be); |
753 | list_del(&dpcm->list_fe); | |
754 | kfree(dpcm); | |
755 | } | |
756 | } | |
757 | ||
758 | /* get BE for DAI widget and stream */ | |
759 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
760 | struct snd_soc_dapm_widget *widget, int stream) | |
761 | { | |
762 | struct snd_soc_pcm_runtime *be; | |
763 | int i; | |
764 | ||
765 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
766 | for (i = 0; i < card->num_links; i++) { | |
767 | be = &card->rtd[i]; | |
768 | ||
769 | if (be->cpu_dai->playback_widget == widget || | |
770 | be->codec_dai->playback_widget == widget) | |
771 | return be; | |
772 | } | |
773 | } else { | |
774 | ||
775 | for (i = 0; i < card->num_links; i++) { | |
776 | be = &card->rtd[i]; | |
777 | ||
778 | if (be->cpu_dai->capture_widget == widget || | |
779 | be->codec_dai->capture_widget == widget) | |
780 | return be; | |
781 | } | |
782 | } | |
783 | ||
784 | dev_err(card->dev, "can't get %s BE for %s\n", | |
785 | stream ? "capture" : "playback", widget->name); | |
786 | return NULL; | |
787 | } | |
788 | ||
789 | static inline struct snd_soc_dapm_widget * | |
790 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
791 | { | |
792 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
793 | return rtd->cpu_dai->playback_widget; | |
794 | else | |
795 | return rtd->cpu_dai->capture_widget; | |
796 | } | |
797 | ||
798 | static inline struct snd_soc_dapm_widget * | |
799 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
800 | { | |
801 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
802 | return rtd->codec_dai->playback_widget; | |
803 | else | |
804 | return rtd->codec_dai->capture_widget; | |
805 | } | |
806 | ||
807 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
808 | struct snd_soc_dapm_widget *widget) | |
809 | { | |
810 | int i; | |
811 | ||
812 | for (i = 0; i < list->num_widgets; i++) { | |
813 | if (widget == list->widgets[i]) | |
814 | return 1; | |
815 | } | |
816 | ||
817 | return 0; | |
818 | } | |
819 | ||
820 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
821 | int stream, struct snd_soc_dapm_widget_list **list_) | |
822 | { | |
823 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
824 | struct snd_soc_dapm_widget_list *list; | |
825 | int paths; | |
826 | ||
827 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
828 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
829 | if (list == NULL) | |
830 | return -ENOMEM; | |
831 | ||
832 | /* get number of valid DAI paths and their widgets */ | |
833 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
834 | ||
835 | dev_dbg(fe->dev, "found %d audio %s paths\n", paths, | |
836 | stream ? "capture" : "playback"); | |
837 | ||
838 | *list_ = list; | |
839 | return paths; | |
840 | } | |
841 | ||
842 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
843 | { | |
844 | kfree(*list); | |
845 | } | |
846 | ||
847 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
848 | struct snd_soc_dapm_widget_list **list_) | |
849 | { | |
850 | struct snd_soc_dpcm *dpcm; | |
851 | struct snd_soc_dapm_widget_list *list = *list_; | |
852 | struct snd_soc_dapm_widget *widget; | |
853 | int prune = 0; | |
854 | ||
855 | /* Destroy any old FE <--> BE connections */ | |
856 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
857 | ||
858 | /* is there a valid CPU DAI widget for this BE */ | |
859 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
860 | ||
861 | /* prune the BE if it's no longer in our active list */ | |
862 | if (widget && widget_in_list(list, widget)) | |
863 | continue; | |
864 | ||
865 | /* is there a valid CODEC DAI widget for this BE */ | |
866 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
867 | ||
868 | /* prune the BE if it's no longer in our active list */ | |
869 | if (widget && widget_in_list(list, widget)) | |
870 | continue; | |
871 | ||
872 | dev_dbg(fe->dev, "pruning %s BE %s for %s\n", | |
873 | stream ? "capture" : "playback", | |
874 | dpcm->be->dai_link->name, fe->dai_link->name); | |
875 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
876 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
877 | prune++; | |
878 | } | |
879 | ||
880 | dev_dbg(fe->dev, "found %d old BE paths for pruning\n", prune); | |
881 | return prune; | |
882 | } | |
883 | ||
884 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
885 | struct snd_soc_dapm_widget_list **list_) | |
886 | { | |
887 | struct snd_soc_card *card = fe->card; | |
888 | struct snd_soc_dapm_widget_list *list = *list_; | |
889 | struct snd_soc_pcm_runtime *be; | |
890 | int i, new = 0, err; | |
891 | ||
892 | /* Create any new FE <--> BE connections */ | |
893 | for (i = 0; i < list->num_widgets; i++) { | |
894 | ||
895 | if (list->widgets[i]->id != snd_soc_dapm_dai) | |
896 | continue; | |
897 | ||
898 | /* is there a valid BE rtd for this widget */ | |
899 | be = dpcm_get_be(card, list->widgets[i], stream); | |
900 | if (!be) { | |
901 | dev_err(fe->dev, "no BE found for %s\n", | |
902 | list->widgets[i]->name); | |
903 | continue; | |
904 | } | |
905 | ||
906 | /* make sure BE is a real BE */ | |
907 | if (!be->dai_link->no_pcm) | |
908 | continue; | |
909 | ||
910 | /* don't connect if FE is not running */ | |
911 | if (!fe->dpcm[stream].runtime) | |
912 | continue; | |
913 | ||
914 | /* newly connected FE and BE */ | |
915 | err = dpcm_be_connect(fe, be, stream); | |
916 | if (err < 0) { | |
917 | dev_err(fe->dev, "can't connect %s\n", | |
918 | list->widgets[i]->name); | |
919 | break; | |
920 | } else if (err == 0) /* already connected */ | |
921 | continue; | |
922 | ||
923 | /* new */ | |
924 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
925 | new++; | |
926 | } | |
927 | ||
928 | dev_dbg(fe->dev, "found %d new BE paths\n", new); | |
929 | return new; | |
930 | } | |
931 | ||
932 | /* | |
933 | * Find the corresponding BE DAIs that source or sink audio to this | |
934 | * FE substream. | |
935 | */ | |
936 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
937 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
938 | { | |
939 | if (new) | |
940 | return dpcm_add_paths(fe, stream, list); | |
941 | else | |
942 | return dpcm_prune_paths(fe, stream, list); | |
943 | } | |
944 | ||
945 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
946 | { | |
947 | struct snd_soc_dpcm *dpcm; | |
948 | ||
949 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
950 | dpcm->be->dpcm[stream].runtime_update = | |
951 | SND_SOC_DPCM_UPDATE_NO; | |
952 | } | |
953 | ||
954 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
955 | int stream) | |
956 | { | |
957 | struct snd_soc_dpcm *dpcm; | |
958 | ||
959 | /* disable any enabled and non active backends */ | |
960 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
961 | ||
962 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
963 | struct snd_pcm_substream *be_substream = | |
964 | snd_soc_dpcm_get_substream(be, stream); | |
965 | ||
966 | if (be->dpcm[stream].users == 0) | |
967 | dev_err(be->dev, "no users %s at close - state %d\n", | |
968 | stream ? "capture" : "playback", | |
969 | be->dpcm[stream].state); | |
970 | ||
971 | if (--be->dpcm[stream].users != 0) | |
972 | continue; | |
973 | ||
974 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
975 | continue; | |
976 | ||
977 | soc_pcm_close(be_substream); | |
978 | be_substream->runtime = NULL; | |
979 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
980 | } | |
981 | } | |
982 | ||
983 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
984 | { | |
985 | struct snd_soc_dpcm *dpcm; | |
986 | int err, count = 0; | |
987 | ||
988 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
989 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
990 | ||
991 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
992 | struct snd_pcm_substream *be_substream = | |
993 | snd_soc_dpcm_get_substream(be, stream); | |
994 | ||
995 | /* is this op for this BE ? */ | |
996 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
997 | continue; | |
998 | ||
999 | /* first time the dpcm is open ? */ | |
1000 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
1001 | dev_err(be->dev, "too many users %s at open %d\n", | |
1002 | stream ? "capture" : "playback", | |
1003 | be->dpcm[stream].state); | |
1004 | ||
1005 | if (be->dpcm[stream].users++ != 0) | |
1006 | continue; | |
1007 | ||
1008 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1009 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1010 | continue; | |
1011 | ||
1012 | dev_dbg(be->dev, "dpcm: open BE %s\n", be->dai_link->name); | |
1013 | ||
1014 | be_substream->runtime = be->dpcm[stream].runtime; | |
1015 | err = soc_pcm_open(be_substream); | |
1016 | if (err < 0) { | |
1017 | dev_err(be->dev, "BE open failed %d\n", err); | |
1018 | be->dpcm[stream].users--; | |
1019 | if (be->dpcm[stream].users < 0) | |
1020 | dev_err(be->dev, "no users %s at unwind %d\n", | |
1021 | stream ? "capture" : "playback", | |
1022 | be->dpcm[stream].state); | |
1023 | ||
1024 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1025 | goto unwind; | |
1026 | } | |
1027 | ||
1028 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1029 | count++; | |
1030 | } | |
1031 | ||
1032 | return count; | |
1033 | ||
1034 | unwind: | |
1035 | /* disable any enabled and non active backends */ | |
1036 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1037 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1038 | struct snd_pcm_substream *be_substream = | |
1039 | snd_soc_dpcm_get_substream(be, stream); | |
1040 | ||
1041 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1042 | continue; | |
1043 | ||
1044 | if (be->dpcm[stream].users == 0) | |
1045 | dev_err(be->dev, "no users %s at close %d\n", | |
1046 | stream ? "capture" : "playback", | |
1047 | be->dpcm[stream].state); | |
1048 | ||
1049 | if (--be->dpcm[stream].users != 0) | |
1050 | continue; | |
1051 | ||
1052 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1053 | continue; | |
1054 | ||
1055 | soc_pcm_close(be_substream); | |
1056 | be_substream->runtime = NULL; | |
1057 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1058 | } | |
1059 | ||
1060 | return err; | |
1061 | } | |
1062 | ||
1063 | void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) | |
1064 | { | |
1065 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1066 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1067 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1068 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1069 | ||
1070 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1071 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1072 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1073 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1074 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1075 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1076 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1077 | } else { | |
1078 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1079 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1080 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1081 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1082 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1083 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1088 | { | |
1089 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1090 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1091 | int stream = fe_substream->stream, ret = 0; | |
1092 | ||
1093 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1094 | ||
1095 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1096 | if (ret < 0) { | |
1097 | dev_err(fe->dev,"dpcm: failed to start some BEs %d\n", ret); | |
1098 | goto be_err; | |
1099 | } | |
1100 | ||
1101 | dev_dbg(fe->dev, "dpcm: open FE %s\n", fe->dai_link->name); | |
1102 | ||
1103 | /* start the DAI frontend */ | |
1104 | ret = soc_pcm_open(fe_substream); | |
1105 | if (ret < 0) { | |
1106 | dev_err(fe->dev,"dpcm: failed to start FE %d\n", ret); | |
1107 | goto unwind; | |
1108 | } | |
1109 | ||
1110 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1111 | ||
1112 | dpcm_set_fe_runtime(fe_substream); | |
1113 | snd_pcm_limit_hw_rates(runtime); | |
1114 | ||
1115 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1116 | return 0; | |
1117 | ||
1118 | unwind: | |
1119 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1120 | be_err: | |
1121 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1122 | return ret; | |
1123 | } | |
1124 | ||
1125 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1126 | { | |
1127 | struct snd_soc_dpcm *dpcm; | |
1128 | ||
1129 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1130 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1131 | ||
1132 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1133 | struct snd_pcm_substream *be_substream = | |
1134 | snd_soc_dpcm_get_substream(be, stream); | |
1135 | ||
1136 | /* is this op for this BE ? */ | |
1137 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1138 | continue; | |
1139 | ||
1140 | if (be->dpcm[stream].users == 0) | |
1141 | dev_err(be->dev, "no users %s at close - state %d\n", | |
1142 | stream ? "capture" : "playback", | |
1143 | be->dpcm[stream].state); | |
1144 | ||
1145 | if (--be->dpcm[stream].users != 0) | |
1146 | continue; | |
1147 | ||
1148 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1149 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1150 | continue; | |
1151 | ||
1152 | dev_dbg(be->dev, "dpcm: close BE %s\n", | |
1153 | dpcm->fe->dai_link->name); | |
1154 | ||
1155 | soc_pcm_close(be_substream); | |
1156 | be_substream->runtime = NULL; | |
1157 | ||
1158 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1159 | } | |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1164 | { | |
1165 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1166 | int stream = substream->stream; | |
1167 | ||
1168 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1169 | ||
1170 | /* shutdown the BEs */ | |
1171 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1172 | ||
1173 | dev_dbg(fe->dev, "dpcm: close FE %s\n", fe->dai_link->name); | |
1174 | ||
1175 | /* now shutdown the frontend */ | |
1176 | soc_pcm_close(substream); | |
1177 | ||
1178 | /* run the stream event for each BE */ | |
1179 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1180 | ||
1181 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1182 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1187 | { | |
1188 | struct snd_soc_dpcm *dpcm; | |
1189 | ||
1190 | /* only hw_params backends that are either sinks or sources | |
1191 | * to this frontend DAI */ | |
1192 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1193 | ||
1194 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1195 | struct snd_pcm_substream *be_substream = | |
1196 | snd_soc_dpcm_get_substream(be, stream); | |
1197 | ||
1198 | /* is this op for this BE ? */ | |
1199 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1200 | continue; | |
1201 | ||
1202 | /* only free hw when no longer used - check all FEs */ | |
1203 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1204 | continue; | |
1205 | ||
1206 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1207 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1208 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1209 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1210 | continue; | |
1211 | ||
1212 | dev_dbg(be->dev, "dpcm: hw_free BE %s\n", | |
1213 | dpcm->fe->dai_link->name); | |
1214 | ||
1215 | soc_pcm_hw_free(be_substream); | |
1216 | ||
1217 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1218 | } | |
1219 | ||
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) | |
1224 | { | |
1225 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1226 | int err, stream = substream->stream; | |
1227 | ||
1228 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1229 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1230 | ||
1231 | dev_dbg(fe->dev, "dpcm: hw_free FE %s\n", fe->dai_link->name); | |
1232 | ||
1233 | /* call hw_free on the frontend */ | |
1234 | err = soc_pcm_hw_free(substream); | |
1235 | if (err < 0) | |
1236 | dev_err(fe->dev,"dpcm: hw_free FE %s failed\n", | |
1237 | fe->dai_link->name); | |
1238 | ||
1239 | /* only hw_params backends that are either sinks or sources | |
1240 | * to this frontend DAI */ | |
1241 | err = dpcm_be_dai_hw_free(fe, stream); | |
1242 | ||
1243 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1244 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1245 | ||
1246 | mutex_unlock(&fe->card->mutex); | |
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1251 | { | |
1252 | struct snd_soc_dpcm *dpcm; | |
1253 | int ret; | |
1254 | ||
1255 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1256 | ||
1257 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1258 | struct snd_pcm_substream *be_substream = | |
1259 | snd_soc_dpcm_get_substream(be, stream); | |
1260 | ||
1261 | /* is this op for this BE ? */ | |
1262 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1263 | continue; | |
1264 | ||
1265 | /* only allow hw_params() if no connected FEs are running */ | |
1266 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1267 | continue; | |
1268 | ||
1269 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1270 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1271 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1272 | continue; | |
1273 | ||
1274 | dev_dbg(be->dev, "dpcm: hw_params BE %s\n", | |
1275 | dpcm->fe->dai_link->name); | |
1276 | ||
1277 | /* copy params for each dpcm */ | |
1278 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1279 | sizeof(struct snd_pcm_hw_params)); | |
1280 | ||
1281 | /* perform any hw_params fixups */ | |
1282 | if (be->dai_link->be_hw_params_fixup) { | |
1283 | ret = be->dai_link->be_hw_params_fixup(be, | |
1284 | &dpcm->hw_params); | |
1285 | if (ret < 0) { | |
1286 | dev_err(be->dev, | |
1287 | "dpcm: hw_params BE fixup failed %d\n", | |
1288 | ret); | |
1289 | goto unwind; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1294 | if (ret < 0) { | |
1295 | dev_err(dpcm->be->dev, | |
1296 | "dpcm: hw_params BE failed %d\n", ret); | |
1297 | goto unwind; | |
1298 | } | |
1299 | ||
1300 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1301 | } | |
1302 | return 0; | |
1303 | ||
1304 | unwind: | |
1305 | /* disable any enabled and non active backends */ | |
1306 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1307 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1308 | struct snd_pcm_substream *be_substream = | |
1309 | snd_soc_dpcm_get_substream(be, stream); | |
1310 | ||
1311 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1312 | continue; | |
1313 | ||
1314 | /* only allow hw_free() if no connected FEs are running */ | |
1315 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1316 | continue; | |
1317 | ||
1318 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1319 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1320 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1321 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1322 | continue; | |
1323 | ||
1324 | soc_pcm_hw_free(be_substream); | |
1325 | } | |
1326 | ||
1327 | return ret; | |
1328 | } | |
1329 | ||
1330 | int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, | |
1331 | struct snd_pcm_hw_params *params) | |
1332 | { | |
1333 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1334 | int ret, stream = substream->stream; | |
1335 | ||
1336 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1337 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1338 | ||
1339 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1340 | sizeof(struct snd_pcm_hw_params)); | |
1341 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1342 | if (ret < 0) { | |
1343 | dev_err(fe->dev,"dpcm: hw_params BE failed %d\n", ret); | |
1344 | goto out; | |
1345 | } | |
1346 | ||
1347 | dev_dbg(fe->dev, "dpcm: hw_params FE %s rate %d chan %x fmt %d\n", | |
1348 | fe->dai_link->name, params_rate(params), | |
1349 | params_channels(params), params_format(params)); | |
1350 | ||
1351 | /* call hw_params on the frontend */ | |
1352 | ret = soc_pcm_hw_params(substream, params); | |
1353 | if (ret < 0) { | |
1354 | dev_err(fe->dev,"dpcm: hw_params FE failed %d\n", ret); | |
1355 | dpcm_be_dai_hw_free(fe, stream); | |
1356 | } else | |
1357 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1358 | ||
1359 | out: | |
1360 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1361 | mutex_unlock(&fe->card->mutex); | |
1362 | return ret; | |
1363 | } | |
1364 | ||
1365 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1366 | struct snd_pcm_substream *substream, int cmd) | |
1367 | { | |
1368 | int ret; | |
1369 | ||
1370 | dev_dbg(dpcm->be->dev, "dpcm: trigger BE %s cmd %d\n", | |
1371 | dpcm->fe->dai_link->name, cmd); | |
1372 | ||
1373 | ret = soc_pcm_trigger(substream, cmd); | |
1374 | if (ret < 0) | |
1375 | dev_err(dpcm->be->dev,"dpcm: trigger BE failed %d\n", ret); | |
1376 | ||
1377 | return ret; | |
1378 | } | |
1379 | ||
1380 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd) | |
1381 | { | |
1382 | struct snd_soc_dpcm *dpcm; | |
1383 | int ret = 0; | |
1384 | ||
1385 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1386 | ||
1387 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1388 | struct snd_pcm_substream *be_substream = | |
1389 | snd_soc_dpcm_get_substream(be, stream); | |
1390 | ||
1391 | /* is this op for this BE ? */ | |
1392 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1393 | continue; | |
1394 | ||
1395 | switch (cmd) { | |
1396 | case SNDRV_PCM_TRIGGER_START: | |
1397 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1398 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1399 | continue; | |
1400 | ||
1401 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1402 | if (ret) | |
1403 | return ret; | |
1404 | ||
1405 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1406 | break; | |
1407 | case SNDRV_PCM_TRIGGER_RESUME: | |
1408 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1409 | continue; | |
1410 | ||
1411 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1412 | if (ret) | |
1413 | return ret; | |
1414 | ||
1415 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1416 | break; | |
1417 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1418 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1419 | continue; | |
1420 | ||
1421 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1422 | if (ret) | |
1423 | return ret; | |
1424 | ||
1425 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1426 | break; | |
1427 | case SNDRV_PCM_TRIGGER_STOP: | |
1428 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1429 | continue; | |
1430 | ||
1431 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1432 | continue; | |
1433 | ||
1434 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1435 | if (ret) | |
1436 | return ret; | |
1437 | ||
1438 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1439 | break; | |
1440 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1441 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1442 | continue; | |
1443 | ||
1444 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1445 | continue; | |
1446 | ||
1447 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1448 | if (ret) | |
1449 | return ret; | |
1450 | ||
1451 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1452 | break; | |
1453 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1454 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1455 | continue; | |
1456 | ||
1457 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1458 | continue; | |
1459 | ||
1460 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1461 | if (ret) | |
1462 | return ret; | |
1463 | ||
1464 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1465 | break; | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | return ret; | |
1470 | } | |
1471 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1472 | ||
1473 | int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) | |
1474 | { | |
1475 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1476 | int stream = substream->stream, ret; | |
1477 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1478 | ||
1479 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1480 | ||
1481 | switch (trigger) { | |
1482 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1483 | /* call trigger on the frontend before the backend. */ | |
1484 | ||
1485 | dev_dbg(fe->dev, "dpcm: pre trigger FE %s cmd %d\n", | |
1486 | fe->dai_link->name, cmd); | |
1487 | ||
1488 | ret = soc_pcm_trigger(substream, cmd); | |
1489 | if (ret < 0) { | |
1490 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1491 | goto out; | |
1492 | } | |
1493 | ||
1494 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1495 | break; | |
1496 | case SND_SOC_DPCM_TRIGGER_POST: | |
1497 | /* call trigger on the frontend after the backend. */ | |
1498 | ||
1499 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1500 | if (ret < 0) { | |
1501 | dev_err(fe->dev,"dpcm: trigger FE failed %d\n", ret); | |
1502 | goto out; | |
1503 | } | |
1504 | ||
1505 | dev_dbg(fe->dev, "dpcm: post trigger FE %s cmd %d\n", | |
1506 | fe->dai_link->name, cmd); | |
1507 | ||
1508 | ret = soc_pcm_trigger(substream, cmd); | |
1509 | break; | |
1510 | default: | |
1511 | dev_err(fe->dev, "dpcm: invalid trigger cmd %d for %s\n", cmd, | |
1512 | fe->dai_link->name); | |
1513 | ret = -EINVAL; | |
1514 | goto out; | |
1515 | } | |
1516 | ||
1517 | switch (cmd) { | |
1518 | case SNDRV_PCM_TRIGGER_START: | |
1519 | case SNDRV_PCM_TRIGGER_RESUME: | |
1520 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1521 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1522 | break; | |
1523 | case SNDRV_PCM_TRIGGER_STOP: | |
1524 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1525 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1526 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1527 | break; | |
1528 | } | |
1529 | ||
1530 | out: | |
1531 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1532 | return ret; | |
1533 | } | |
1534 | ||
1535 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1536 | { | |
1537 | struct snd_soc_dpcm *dpcm; | |
1538 | int ret = 0; | |
1539 | ||
1540 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1541 | ||
1542 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1543 | struct snd_pcm_substream *be_substream = | |
1544 | snd_soc_dpcm_get_substream(be, stream); | |
1545 | ||
1546 | /* is this op for this BE ? */ | |
1547 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1548 | continue; | |
1549 | ||
1550 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1551 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1552 | continue; | |
1553 | ||
1554 | dev_dbg(be->dev, "dpcm: prepare BE %s\n", | |
1555 | dpcm->fe->dai_link->name); | |
1556 | ||
1557 | ret = soc_pcm_prepare(be_substream); | |
1558 | if (ret < 0) { | |
1559 | dev_err(be->dev, "dpcm: backend prepare failed %d\n", | |
1560 | ret); | |
1561 | break; | |
1562 | } | |
1563 | ||
1564 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1565 | } | |
1566 | return ret; | |
1567 | } | |
1568 | ||
1569 | int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) | |
1570 | { | |
1571 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1572 | int stream = substream->stream, ret = 0; | |
1573 | ||
1574 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1575 | ||
1576 | dev_dbg(fe->dev, "dpcm: prepare FE %s\n", fe->dai_link->name); | |
1577 | ||
1578 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1579 | ||
1580 | /* there is no point preparing this FE if there are no BEs */ | |
1581 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
1582 | dev_err(fe->dev, "dpcm: no backend DAIs enabled for %s\n", | |
1583 | fe->dai_link->name); | |
1584 | ret = -EINVAL; | |
1585 | goto out; | |
1586 | } | |
1587 | ||
1588 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1589 | if (ret < 0) | |
1590 | goto out; | |
1591 | ||
1592 | /* call prepare on the frontend */ | |
1593 | ret = soc_pcm_prepare(substream); | |
1594 | if (ret < 0) { | |
1595 | dev_err(fe->dev,"dpcm: prepare FE %s failed\n", | |
1596 | fe->dai_link->name); | |
1597 | goto out; | |
1598 | } | |
1599 | ||
1600 | /* run the stream event for each BE */ | |
1601 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1602 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1603 | ||
1604 | out: | |
1605 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1606 | mutex_unlock(&fe->card->mutex); | |
1607 | ||
1608 | return ret; | |
1609 | } | |
1610 | ||
1611 | ||
1612 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) | |
1613 | { | |
1614 | struct snd_soc_dpcm *dpcm; | |
1615 | struct list_head *clients = | |
1616 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1617 | ||
1618 | list_for_each_entry(dpcm, clients, list_be) { | |
1619 | ||
1620 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1621 | struct snd_soc_dai *dai = be->codec_dai; | |
1622 | struct snd_soc_dai_driver *drv = dai->driver; | |
1623 | ||
1624 | if (be->dai_link->ignore_suspend) | |
1625 | continue; | |
1626 | ||
1627 | dev_dbg(be->dev, "BE digital mute %s\n", be->dai_link->name); | |
1628 | ||
1629 | if (drv->ops->digital_mute && dai->playback_active) | |
1630 | drv->ops->digital_mute(dai, mute); | |
1631 | } | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) | |
1637 | { | |
1638 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1639 | struct snd_soc_dpcm *dpcm; | |
1640 | struct snd_soc_dapm_widget_list *list; | |
1641 | int ret; | |
1642 | int stream = fe_substream->stream; | |
1643 | ||
1644 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1645 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1646 | ||
1647 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
1648 | dev_warn(fe->dev, "asoc: %s no valid %s route\n", | |
1649 | fe->dai_link->name, stream ? "capture" : "playback"); | |
1650 | mutex_unlock(&fe->card->mutex); | |
1651 | return -EINVAL; | |
1652 | } | |
1653 | ||
1654 | /* calculate valid and active FE <-> BE dpcms */ | |
1655 | dpcm_process_paths(fe, stream, &list, 1); | |
1656 | ||
1657 | ret = dpcm_fe_dai_startup(fe_substream); | |
1658 | if (ret < 0) { | |
1659 | /* clean up all links */ | |
1660 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1661 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1662 | ||
1663 | dpcm_be_disconnect(fe, stream); | |
1664 | fe->dpcm[stream].runtime = NULL; | |
1665 | } | |
1666 | ||
1667 | dpcm_clear_pending_state(fe, stream); | |
1668 | dpcm_path_put(&list); | |
1669 | mutex_unlock(&fe->card->mutex); | |
1670 | return ret; | |
1671 | } | |
1672 | ||
1673 | int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) | |
1674 | { | |
1675 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1676 | struct snd_soc_dpcm *dpcm; | |
1677 | int stream = fe_substream->stream, ret; | |
1678 | ||
1679 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1680 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
1681 | ||
1682 | /* mark FE's links ready to prune */ | |
1683 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1684 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1685 | ||
1686 | dpcm_be_disconnect(fe, stream); | |
1687 | ||
1688 | fe->dpcm[stream].runtime = NULL; | |
1689 | mutex_unlock(&fe->card->mutex); | |
1690 | return ret; | |
1691 | } | |
1692 | ||
ddee627c LG |
1693 | /* create a new pcm */ |
1694 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
1695 | { | |
1696 | struct snd_soc_codec *codec = rtd->codec; | |
1697 | struct snd_soc_platform *platform = rtd->platform; | |
1698 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
1699 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1700 | struct snd_pcm *pcm; | |
1701 | char new_name[64]; | |
1702 | int ret = 0, playback = 0, capture = 0; | |
1703 | ||
01d7584c LG |
1704 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
1705 | if (cpu_dai->driver->playback.channels_min) | |
1706 | playback = 1; | |
1707 | if (cpu_dai->driver->capture.channels_min) | |
1708 | capture = 1; | |
1709 | } else { | |
1710 | if (codec_dai->driver->playback.channels_min) | |
1711 | playback = 1; | |
1712 | if (codec_dai->driver->capture.channels_min) | |
1713 | capture = 1; | |
1714 | } | |
1715 | ||
1716 | /* create the PCM */ | |
1717 | if (rtd->dai_link->no_pcm) { | |
1718 | snprintf(new_name, sizeof(new_name), "(%s)", | |
1719 | rtd->dai_link->stream_name); | |
1720 | ||
1721 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
1722 | playback, capture, &pcm); | |
1723 | } else { | |
1724 | if (rtd->dai_link->dynamic) | |
1725 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
1726 | rtd->dai_link->stream_name); | |
1727 | else | |
1728 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
1729 | rtd->dai_link->stream_name, codec_dai->name, num); | |
1730 | ||
1731 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
1732 | capture, &pcm); | |
1733 | } | |
ddee627c LG |
1734 | if (ret < 0) { |
1735 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
1736 | return ret; | |
1737 | } | |
01d7584c | 1738 | dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
1739 | |
1740 | /* DAPM dai link stream work */ | |
1741 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
1742 | ||
1743 | rtd->pcm = pcm; | |
1744 | pcm->private_data = rtd; | |
01d7584c LG |
1745 | |
1746 | if (rtd->dai_link->no_pcm) { | |
1747 | if (playback) | |
1748 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
1749 | if (capture) | |
1750 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
1751 | goto out; | |
1752 | } | |
1753 | ||
1754 | /* ASoC PCM operations */ | |
1755 | if (rtd->dai_link->dynamic) { | |
1756 | rtd->ops.open = dpcm_fe_dai_open; | |
1757 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
1758 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
1759 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
1760 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
1761 | rtd->ops.close = dpcm_fe_dai_close; | |
1762 | rtd->ops.pointer = soc_pcm_pointer; | |
1763 | } else { | |
1764 | rtd->ops.open = soc_pcm_open; | |
1765 | rtd->ops.hw_params = soc_pcm_hw_params; | |
1766 | rtd->ops.prepare = soc_pcm_prepare; | |
1767 | rtd->ops.trigger = soc_pcm_trigger; | |
1768 | rtd->ops.hw_free = soc_pcm_hw_free; | |
1769 | rtd->ops.close = soc_pcm_close; | |
1770 | rtd->ops.pointer = soc_pcm_pointer; | |
1771 | } | |
1772 | ||
ddee627c | 1773 | if (platform->driver->ops) { |
01d7584c LG |
1774 | rtd->ops.ack = platform->driver->ops->ack; |
1775 | rtd->ops.copy = platform->driver->ops->copy; | |
1776 | rtd->ops.silence = platform->driver->ops->silence; | |
1777 | rtd->ops.page = platform->driver->ops->page; | |
1778 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
1779 | } |
1780 | ||
1781 | if (playback) | |
01d7584c | 1782 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
1783 | |
1784 | if (capture) | |
01d7584c | 1785 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
1786 | |
1787 | if (platform->driver->pcm_new) { | |
1788 | ret = platform->driver->pcm_new(rtd); | |
1789 | if (ret < 0) { | |
1790 | pr_err("asoc: platform pcm constructor failed\n"); | |
1791 | return ret; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 1796 | out: |
ddee627c LG |
1797 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
1798 | cpu_dai->name); | |
1799 | return ret; | |
1800 | } | |
01d7584c LG |
1801 | |
1802 | /* is the current PCM operation for this FE ? */ | |
1803 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1804 | { | |
1805 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
1806 | return 1; | |
1807 | return 0; | |
1808 | } | |
1809 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
1810 | ||
1811 | /* is the current PCM operation for this BE ? */ | |
1812 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
1813 | struct snd_soc_pcm_runtime *be, int stream) | |
1814 | { | |
1815 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
1816 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
1817 | be->dpcm[stream].runtime_update)) | |
1818 | return 1; | |
1819 | return 0; | |
1820 | } | |
1821 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
1822 | ||
1823 | /* get the substream for this BE */ | |
1824 | struct snd_pcm_substream * | |
1825 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
1826 | { | |
1827 | return be->pcm->streams[stream].substream; | |
1828 | } | |
1829 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
1830 | ||
1831 | /* get the BE runtime state */ | |
1832 | enum snd_soc_dpcm_state | |
1833 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
1834 | { | |
1835 | return be->dpcm[stream].state; | |
1836 | } | |
1837 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
1838 | ||
1839 | /* set the BE runtime state */ | |
1840 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
1841 | int stream, enum snd_soc_dpcm_state state) | |
1842 | { | |
1843 | be->dpcm[stream].state = state; | |
1844 | } | |
1845 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
1846 | ||
1847 | /* | |
1848 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
1849 | * are not running, paused or suspended for the specified stream direction. | |
1850 | */ | |
1851 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
1852 | struct snd_soc_pcm_runtime *be, int stream) | |
1853 | { | |
1854 | struct snd_soc_dpcm *dpcm; | |
1855 | int state; | |
1856 | ||
1857 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
1858 | ||
1859 | if (dpcm->fe == fe) | |
1860 | continue; | |
1861 | ||
1862 | state = dpcm->fe->dpcm[stream].state; | |
1863 | if (state == SND_SOC_DPCM_STATE_START || | |
1864 | state == SND_SOC_DPCM_STATE_PAUSED || | |
1865 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | /* it's safe to free/stop this BE DAI */ | |
1870 | return 1; | |
1871 | } | |
1872 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
1873 | ||
1874 | /* | |
1875 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
1876 | * running, paused or suspended for the specified stream direction. | |
1877 | */ | |
1878 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
1879 | struct snd_soc_pcm_runtime *be, int stream) | |
1880 | { | |
1881 | struct snd_soc_dpcm *dpcm; | |
1882 | int state; | |
1883 | ||
1884 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
1885 | ||
1886 | if (dpcm->fe == fe) | |
1887 | continue; | |
1888 | ||
1889 | state = dpcm->fe->dpcm[stream].state; | |
1890 | if (state == SND_SOC_DPCM_STATE_START || | |
1891 | state == SND_SOC_DPCM_STATE_PAUSED || | |
1892 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
1893 | state == SND_SOC_DPCM_STATE_PREPARE) | |
1894 | return 0; | |
1895 | } | |
1896 | ||
1897 | /* it's safe to change hw_params */ | |
1898 | return 1; | |
1899 | } | |
1900 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 LG |
1901 | |
1902 | #ifdef CONFIG_DEBUG_FS | |
1903 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
1904 | { | |
1905 | switch (state) { | |
1906 | case SND_SOC_DPCM_STATE_NEW: | |
1907 | return "new"; | |
1908 | case SND_SOC_DPCM_STATE_OPEN: | |
1909 | return "open"; | |
1910 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
1911 | return "hw_params"; | |
1912 | case SND_SOC_DPCM_STATE_PREPARE: | |
1913 | return "prepare"; | |
1914 | case SND_SOC_DPCM_STATE_START: | |
1915 | return "start"; | |
1916 | case SND_SOC_DPCM_STATE_STOP: | |
1917 | return "stop"; | |
1918 | case SND_SOC_DPCM_STATE_SUSPEND: | |
1919 | return "suspend"; | |
1920 | case SND_SOC_DPCM_STATE_PAUSED: | |
1921 | return "paused"; | |
1922 | case SND_SOC_DPCM_STATE_HW_FREE: | |
1923 | return "hw_free"; | |
1924 | case SND_SOC_DPCM_STATE_CLOSE: | |
1925 | return "close"; | |
1926 | } | |
1927 | ||
1928 | return "unknown"; | |
1929 | } | |
1930 | ||
1931 | static int dpcm_state_open_file(struct inode *inode, struct file *file) | |
1932 | { | |
1933 | file->private_data = inode->i_private; | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, | |
1938 | int stream, char *buf, size_t size) | |
1939 | { | |
1940 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
1941 | struct snd_soc_dpcm *dpcm; | |
1942 | ssize_t offset = 0; | |
1943 | ||
1944 | /* FE state */ | |
1945 | offset += snprintf(buf + offset, size - offset, | |
1946 | "[%s - %s]\n", fe->dai_link->name, | |
1947 | stream ? "Capture" : "Playback"); | |
1948 | ||
1949 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
1950 | dpcm_state_string(fe->dpcm[stream].state)); | |
1951 | ||
1952 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1953 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
1954 | offset += snprintf(buf + offset, size - offset, | |
1955 | "Hardware Params: " | |
1956 | "Format = %s, Channels = %d, Rate = %d\n", | |
1957 | snd_pcm_format_name(params_format(params)), | |
1958 | params_channels(params), | |
1959 | params_rate(params)); | |
1960 | ||
1961 | /* BEs state */ | |
1962 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
1963 | ||
1964 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
1965 | offset += snprintf(buf + offset, size - offset, | |
1966 | " No active DSP links\n"); | |
1967 | goto out; | |
1968 | } | |
1969 | ||
1970 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1971 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1972 | params = &dpcm->hw_params; | |
1973 | ||
1974 | offset += snprintf(buf + offset, size - offset, | |
1975 | "- %s\n", be->dai_link->name); | |
1976 | ||
1977 | offset += snprintf(buf + offset, size - offset, | |
1978 | " State: %s\n", | |
1979 | dpcm_state_string(be->dpcm[stream].state)); | |
1980 | ||
1981 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1982 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
1983 | offset += snprintf(buf + offset, size - offset, | |
1984 | " Hardware Params: " | |
1985 | "Format = %s, Channels = %d, Rate = %d\n", | |
1986 | snd_pcm_format_name(params_format(params)), | |
1987 | params_channels(params), | |
1988 | params_rate(params)); | |
1989 | } | |
1990 | ||
1991 | out: | |
1992 | return offset; | |
1993 | } | |
1994 | ||
1995 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
1996 | size_t count, loff_t *ppos) | |
1997 | { | |
1998 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
1999 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2000 | char *buf; | |
2001 | ||
2002 | buf = kmalloc(out_count, GFP_KERNEL); | |
2003 | if (!buf) | |
2004 | return -ENOMEM; | |
2005 | ||
2006 | if (fe->cpu_dai->driver->playback.channels_min) | |
2007 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2008 | buf + offset, out_count - offset); | |
2009 | ||
2010 | if (fe->cpu_dai->driver->capture.channels_min) | |
2011 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2012 | buf + offset, out_count - offset); | |
2013 | ||
2014 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); | |
2015 | ||
2016 | kfree(buf); | |
2017 | ||
2018 | return ret; | |
2019 | } | |
2020 | ||
2021 | static const struct file_operations dpcm_state_fops = { | |
2022 | .open = dpcm_state_open_file, | |
2023 | .read = dpcm_state_read_file, | |
2024 | .llseek = default_llseek, | |
2025 | }; | |
2026 | ||
2027 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2028 | { | |
2029 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, | |
2030 | rtd->card->debugfs_card_root); | |
2031 | if (!rtd->debugfs_dpcm_root) { | |
2032 | dev_dbg(rtd->dev, | |
2033 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2034 | rtd->dai_link->name); | |
2035 | return -EINVAL; | |
2036 | } | |
2037 | ||
2038 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0644, | |
2039 | rtd->debugfs_dpcm_root, | |
2040 | rtd, &dpcm_state_fops); | |
2041 | ||
2042 | return 0; | |
2043 | } | |
2044 | #endif |