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 | ||
103d84a3 | 46 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
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, | |
103d84a3 | 73 | "ASoC: Not enforcing symmetric_rates due to race\n"); |
ddee627c LG |
74 | return 0; |
75 | } | |
76 | ||
103d84a3 | 77 | dev_dbg(soc_dai->dev, "ASoC: 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, |
103d84a3 LG |
84 | "ASoC: Unable to apply rate symmetry constraint: %d\n", |
85 | ret); | |
ddee627c LG |
86 | return ret; |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
58ba9b25 MB |
92 | /* |
93 | * List of sample sizes that might go over the bus for parameter | |
94 | * application. There ought to be a wildcard sample size for things | |
95 | * like the DAC/ADC resolution to use but there isn't right now. | |
96 | */ | |
97 | static int sample_sizes[] = { | |
88e33954 | 98 | 24, 32, |
58ba9b25 MB |
99 | }; |
100 | ||
101 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
102 | struct snd_soc_dai *dai) | |
103 | { | |
104 | int ret, i, bits; | |
105 | ||
106 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
107 | bits = dai->driver->playback.sig_bits; | |
108 | else | |
109 | bits = dai->driver->capture.sig_bits; | |
110 | ||
111 | if (!bits) | |
112 | return; | |
113 | ||
114 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
115 | if (bits >= sample_sizes[i]) |
116 | continue; | |
117 | ||
118 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
119 | sample_sizes[i], bits); | |
58ba9b25 MB |
120 | if (ret != 0) |
121 | dev_warn(dai->dev, | |
103d84a3 | 122 | "ASoC: Failed to set MSB %d/%d: %d\n", |
58ba9b25 MB |
123 | bits, sample_sizes[i], ret); |
124 | } | |
125 | } | |
126 | ||
ddee627c LG |
127 | /* |
128 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
129 | * then initialized and any private data can be allocated. This also calls | |
130 | * startup for the cpu DAI, platform, machine and codec DAI. | |
131 | */ | |
132 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
133 | { | |
134 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
135 | struct snd_pcm_runtime *runtime = substream->runtime; | |
136 | struct snd_soc_platform *platform = rtd->platform; | |
137 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
138 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
139 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
140 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
141 | int ret = 0; | |
142 | ||
d6652ef8 MB |
143 | pm_runtime_get_sync(cpu_dai->dev); |
144 | pm_runtime_get_sync(codec_dai->dev); | |
145 | pm_runtime_get_sync(platform->dev); | |
146 | ||
b8c0dab9 | 147 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
148 | |
149 | /* startup the audio subsystem */ | |
150 | if (cpu_dai->driver->ops->startup) { | |
151 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); | |
152 | if (ret < 0) { | |
103d84a3 LG |
153 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
154 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
155 | goto out; |
156 | } | |
157 | } | |
158 | ||
159 | if (platform->driver->ops && platform->driver->ops->open) { | |
160 | ret = platform->driver->ops->open(substream); | |
161 | if (ret < 0) { | |
103d84a3 LG |
162 | dev_err(platform->dev, "ASoC: can't open platform" |
163 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
164 | goto platform_err; |
165 | } | |
166 | } | |
167 | ||
168 | if (codec_dai->driver->ops->startup) { | |
169 | ret = codec_dai->driver->ops->startup(substream, codec_dai); | |
170 | if (ret < 0) { | |
103d84a3 LG |
171 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
172 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
173 | goto codec_dai_err; |
174 | } | |
175 | } | |
176 | ||
177 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
178 | ret = rtd->dai_link->ops->startup(substream); | |
179 | if (ret < 0) { | |
103d84a3 | 180 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 181 | rtd->dai_link->name, ret); |
ddee627c LG |
182 | goto machine_err; |
183 | } | |
184 | } | |
185 | ||
01d7584c LG |
186 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
187 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
188 | goto dynamic; | |
189 | ||
ddee627c LG |
190 | /* Check that the codec and cpu DAIs are compatible */ |
191 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
192 | runtime->hw.rate_min = | |
193 | max(codec_dai_drv->playback.rate_min, | |
194 | cpu_dai_drv->playback.rate_min); | |
195 | runtime->hw.rate_max = | |
196 | min(codec_dai_drv->playback.rate_max, | |
197 | cpu_dai_drv->playback.rate_max); | |
198 | runtime->hw.channels_min = | |
199 | max(codec_dai_drv->playback.channels_min, | |
200 | cpu_dai_drv->playback.channels_min); | |
201 | runtime->hw.channels_max = | |
202 | min(codec_dai_drv->playback.channels_max, | |
203 | cpu_dai_drv->playback.channels_max); | |
204 | runtime->hw.formats = | |
205 | codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; | |
206 | runtime->hw.rates = | |
207 | codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; | |
208 | if (codec_dai_drv->playback.rates | |
209 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
210 | runtime->hw.rates |= cpu_dai_drv->playback.rates; | |
211 | if (cpu_dai_drv->playback.rates | |
212 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
213 | runtime->hw.rates |= codec_dai_drv->playback.rates; | |
214 | } else { | |
215 | runtime->hw.rate_min = | |
216 | max(codec_dai_drv->capture.rate_min, | |
217 | cpu_dai_drv->capture.rate_min); | |
218 | runtime->hw.rate_max = | |
219 | min(codec_dai_drv->capture.rate_max, | |
220 | cpu_dai_drv->capture.rate_max); | |
221 | runtime->hw.channels_min = | |
222 | max(codec_dai_drv->capture.channels_min, | |
223 | cpu_dai_drv->capture.channels_min); | |
224 | runtime->hw.channels_max = | |
225 | min(codec_dai_drv->capture.channels_max, | |
226 | cpu_dai_drv->capture.channels_max); | |
227 | runtime->hw.formats = | |
228 | codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; | |
229 | runtime->hw.rates = | |
230 | codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; | |
231 | if (codec_dai_drv->capture.rates | |
232 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
233 | runtime->hw.rates |= cpu_dai_drv->capture.rates; | |
234 | if (cpu_dai_drv->capture.rates | |
235 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
236 | runtime->hw.rates |= codec_dai_drv->capture.rates; | |
237 | } | |
238 | ||
239 | ret = -EINVAL; | |
240 | snd_pcm_limit_hw_rates(runtime); | |
241 | if (!runtime->hw.rates) { | |
103d84a3 | 242 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
243 | codec_dai->name, cpu_dai->name); |
244 | goto config_err; | |
245 | } | |
246 | if (!runtime->hw.formats) { | |
103d84a3 | 247 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
248 | codec_dai->name, cpu_dai->name); |
249 | goto config_err; | |
250 | } | |
251 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
252 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 253 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
254 | codec_dai->name, cpu_dai->name); |
255 | goto config_err; | |
256 | } | |
257 | ||
58ba9b25 MB |
258 | soc_pcm_apply_msb(substream, codec_dai); |
259 | soc_pcm_apply_msb(substream, cpu_dai); | |
260 | ||
ddee627c | 261 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
262 | if (cpu_dai->active) { |
263 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
264 | if (ret != 0) | |
265 | goto config_err; | |
266 | } | |
267 | ||
268 | if (codec_dai->active) { | |
269 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
270 | if (ret != 0) |
271 | goto config_err; | |
272 | } | |
273 | ||
103d84a3 | 274 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 275 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
276 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
277 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 278 | runtime->hw.channels_max); |
103d84a3 | 279 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
280 | runtime->hw.rate_max); |
281 | ||
01d7584c | 282 | dynamic: |
ddee627c LG |
283 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
284 | cpu_dai->playback_active++; | |
285 | codec_dai->playback_active++; | |
286 | } else { | |
287 | cpu_dai->capture_active++; | |
288 | codec_dai->capture_active++; | |
289 | } | |
290 | cpu_dai->active++; | |
291 | codec_dai->active++; | |
292 | rtd->codec->active++; | |
b8c0dab9 | 293 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
294 | return 0; |
295 | ||
296 | config_err: | |
297 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
298 | rtd->dai_link->ops->shutdown(substream); | |
299 | ||
300 | machine_err: | |
301 | if (codec_dai->driver->ops->shutdown) | |
302 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
303 | ||
304 | codec_dai_err: | |
305 | if (platform->driver->ops && platform->driver->ops->close) | |
306 | platform->driver->ops->close(substream); | |
307 | ||
308 | platform_err: | |
309 | if (cpu_dai->driver->ops->shutdown) | |
310 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
311 | out: | |
b8c0dab9 | 312 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
313 | |
314 | pm_runtime_put(platform->dev); | |
315 | pm_runtime_put(codec_dai->dev); | |
316 | pm_runtime_put(cpu_dai->dev); | |
317 | ||
ddee627c LG |
318 | return ret; |
319 | } | |
320 | ||
321 | /* | |
322 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
323 | * This is to ensure there are no pops or clicks in between any music tracks | |
324 | * due to DAPM power cycling. | |
325 | */ | |
326 | static void close_delayed_work(struct work_struct *work) | |
327 | { | |
328 | struct snd_soc_pcm_runtime *rtd = | |
329 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
330 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
331 | ||
b8c0dab9 | 332 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 333 | |
103d84a3 | 334 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
335 | codec_dai->driver->playback.stream_name, |
336 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 337 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
338 | |
339 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
340 | if (rtd->pop_wait == 1) { |
341 | rtd->pop_wait = 0; | |
7bd3a6f3 | 342 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 343 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
344 | } |
345 | ||
b8c0dab9 | 346 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
347 | } |
348 | ||
349 | /* | |
350 | * Called by ALSA when a PCM substream is closed. Private data can be | |
351 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
352 | * shutdown. | |
353 | */ | |
91d5e6b4 | 354 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
355 | { |
356 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
357 | struct snd_soc_platform *platform = rtd->platform; | |
358 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
359 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
360 | struct snd_soc_codec *codec = rtd->codec; | |
361 | ||
b8c0dab9 | 362 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
363 | |
364 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
365 | cpu_dai->playback_active--; | |
366 | codec_dai->playback_active--; | |
367 | } else { | |
368 | cpu_dai->capture_active--; | |
369 | codec_dai->capture_active--; | |
370 | } | |
371 | ||
372 | cpu_dai->active--; | |
373 | codec_dai->active--; | |
374 | codec->active--; | |
375 | ||
17841020 DA |
376 | /* clear the corresponding DAIs rate when inactive */ |
377 | if (!cpu_dai->active) | |
378 | cpu_dai->rate = 0; | |
379 | ||
380 | if (!codec_dai->active) | |
381 | codec_dai->rate = 0; | |
25b76791 | 382 | |
ddee627c LG |
383 | /* Muting the DAC suppresses artifacts caused during digital |
384 | * shutdown, for example from stopping clocks. | |
385 | */ | |
da18396f | 386 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
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 */ | |
9bffb1fb | 410 | rtd->pop_wait = 1; |
1d69c5c5 PU |
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) { | |
103d84a3 LG |
447 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
448 | " %d\n", ret); | |
ddee627c LG |
449 | goto out; |
450 | } | |
451 | } | |
452 | ||
453 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
454 | ret = platform->driver->ops->prepare(substream); | |
455 | if (ret < 0) { | |
103d84a3 LG |
456 | dev_err(platform->dev, "ASoC: platform prepare error:" |
457 | " %d\n", ret); | |
ddee627c LG |
458 | goto out; |
459 | } | |
460 | } | |
461 | ||
462 | if (codec_dai->driver->ops->prepare) { | |
463 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); | |
464 | if (ret < 0) { | |
103d84a3 | 465 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 466 | ret); |
ddee627c LG |
467 | goto out; |
468 | } | |
469 | } | |
470 | ||
471 | if (cpu_dai->driver->ops->prepare) { | |
472 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); | |
473 | if (ret < 0) { | |
103d84a3 | 474 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 475 | ret); |
ddee627c LG |
476 | goto out; |
477 | } | |
478 | } | |
479 | ||
480 | /* cancel any delayed stream shutdown that is pending */ | |
481 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
482 | rtd->pop_wait) { |
483 | rtd->pop_wait = 0; | |
ddee627c LG |
484 | cancel_delayed_work(&rtd->delayed_work); |
485 | } | |
486 | ||
d9b0951b LG |
487 | snd_soc_dapm_stream_event(rtd, substream->stream, |
488 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 489 | |
da18396f | 490 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
491 | |
492 | out: | |
b8c0dab9 | 493 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
494 | return ret; |
495 | } | |
496 | ||
497 | /* | |
498 | * Called by ALSA when the hardware params are set by application. This | |
499 | * function can also be called multiple times and can allocate buffers | |
500 | * (using snd_pcm_lib_* ). It's non-atomic. | |
501 | */ | |
502 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
503 | struct snd_pcm_hw_params *params) | |
504 | { | |
505 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
506 | struct snd_soc_platform *platform = rtd->platform; | |
507 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
508 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
509 | int ret = 0; | |
510 | ||
b8c0dab9 | 511 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
512 | |
513 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
514 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
515 | if (ret < 0) { | |
103d84a3 LG |
516 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
517 | " failed: %d\n", ret); | |
ddee627c LG |
518 | goto out; |
519 | } | |
520 | } | |
521 | ||
522 | if (codec_dai->driver->ops->hw_params) { | |
523 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); | |
524 | if (ret < 0) { | |
103d84a3 LG |
525 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
526 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
527 | goto codec_err; |
528 | } | |
529 | } | |
530 | ||
531 | if (cpu_dai->driver->ops->hw_params) { | |
532 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); | |
533 | if (ret < 0) { | |
103d84a3 | 534 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 535 | cpu_dai->name, ret); |
ddee627c LG |
536 | goto interface_err; |
537 | } | |
538 | } | |
539 | ||
540 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
541 | ret = platform->driver->ops->hw_params(substream, params); | |
542 | if (ret < 0) { | |
103d84a3 | 543 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 544 | platform->name, ret); |
ddee627c LG |
545 | goto platform_err; |
546 | } | |
547 | } | |
548 | ||
17841020 DA |
549 | /* store the rate for each DAIs */ |
550 | cpu_dai->rate = params_rate(params); | |
551 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
552 | |
553 | out: | |
b8c0dab9 | 554 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
555 | return ret; |
556 | ||
557 | platform_err: | |
558 | if (cpu_dai->driver->ops->hw_free) | |
559 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
560 | ||
561 | interface_err: | |
562 | if (codec_dai->driver->ops->hw_free) | |
563 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
564 | ||
565 | codec_err: | |
566 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
567 | rtd->dai_link->ops->hw_free(substream); | |
568 | ||
b8c0dab9 | 569 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
570 | return ret; |
571 | } | |
572 | ||
573 | /* | |
574 | * Frees resources allocated by hw_params, can be called multiple times | |
575 | */ | |
576 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
577 | { | |
578 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
579 | struct snd_soc_platform *platform = rtd->platform; | |
580 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
581 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
582 | struct snd_soc_codec *codec = rtd->codec; | |
583 | ||
b8c0dab9 | 584 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
585 | |
586 | /* apply codec digital mute */ | |
587 | if (!codec->active) | |
da18396f | 588 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
589 | |
590 | /* free any machine hw params */ | |
591 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
592 | rtd->dai_link->ops->hw_free(substream); | |
593 | ||
594 | /* free any DMA resources */ | |
595 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
596 | platform->driver->ops->hw_free(substream); | |
597 | ||
598 | /* now free hw params for the DAIs */ | |
599 | if (codec_dai->driver->ops->hw_free) | |
600 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
601 | ||
602 | if (cpu_dai->driver->ops->hw_free) | |
603 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
604 | ||
b8c0dab9 | 605 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
606 | return 0; |
607 | } | |
608 | ||
609 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
610 | { | |
611 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
612 | struct snd_soc_platform *platform = rtd->platform; | |
613 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
614 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
615 | int ret; | |
616 | ||
617 | if (codec_dai->driver->ops->trigger) { | |
618 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); | |
619 | if (ret < 0) | |
620 | return ret; | |
621 | } | |
622 | ||
623 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
624 | ret = platform->driver->ops->trigger(substream, cmd); | |
625 | if (ret < 0) | |
626 | return ret; | |
627 | } | |
628 | ||
629 | if (cpu_dai->driver->ops->trigger) { | |
630 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); | |
631 | if (ret < 0) | |
632 | return ret; | |
633 | } | |
634 | return 0; | |
635 | } | |
636 | ||
45c0a188 MB |
637 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
638 | int cmd) | |
07bf84aa LG |
639 | { |
640 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
641 | struct snd_soc_platform *platform = rtd->platform; | |
642 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
643 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
644 | int ret; | |
645 | ||
646 | if (codec_dai->driver->ops->bespoke_trigger) { | |
647 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); | |
648 | if (ret < 0) | |
649 | return ret; | |
650 | } | |
651 | ||
652 | if (platform->driver->bespoke_trigger) { | |
653 | ret = platform->driver->bespoke_trigger(substream, cmd); | |
654 | if (ret < 0) | |
655 | return ret; | |
656 | } | |
657 | ||
658 | if (cpu_dai->driver->ops->bespoke_trigger) { | |
659 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); | |
660 | if (ret < 0) | |
661 | return ret; | |
662 | } | |
663 | return 0; | |
664 | } | |
ddee627c LG |
665 | /* |
666 | * soc level wrapper for pointer callback | |
667 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
668 | * the runtime->delay will be updated accordingly. | |
669 | */ | |
670 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
671 | { | |
672 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
673 | struct snd_soc_platform *platform = rtd->platform; | |
674 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
675 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
676 | struct snd_pcm_runtime *runtime = substream->runtime; | |
677 | snd_pcm_uframes_t offset = 0; | |
678 | snd_pcm_sframes_t delay = 0; | |
679 | ||
680 | if (platform->driver->ops && platform->driver->ops->pointer) | |
681 | offset = platform->driver->ops->pointer(substream); | |
682 | ||
683 | if (cpu_dai->driver->ops->delay) | |
684 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
685 | ||
686 | if (codec_dai->driver->ops->delay) | |
687 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
688 | ||
689 | if (platform->driver->delay) | |
690 | delay += platform->driver->delay(substream, codec_dai); | |
691 | ||
692 | runtime->delay = delay; | |
693 | ||
694 | return offset; | |
695 | } | |
696 | ||
01d7584c LG |
697 | /* connect a FE and BE */ |
698 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
699 | struct snd_soc_pcm_runtime *be, int stream) | |
700 | { | |
701 | struct snd_soc_dpcm *dpcm; | |
702 | ||
703 | /* only add new dpcms */ | |
704 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
705 | if (dpcm->be == be && dpcm->fe == fe) | |
706 | return 0; | |
707 | } | |
708 | ||
709 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
710 | if (!dpcm) | |
711 | return -ENOMEM; | |
712 | ||
713 | dpcm->be = be; | |
714 | dpcm->fe = fe; | |
715 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
716 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
717 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
718 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
719 | ||
720 | dev_dbg(fe->dev, " connected new DPCM %s path %s %s %s\n", | |
721 | stream ? "capture" : "playback", fe->dai_link->name, | |
722 | stream ? "<-" : "->", be->dai_link->name); | |
723 | ||
f86dcef8 LG |
724 | #ifdef CONFIG_DEBUG_FS |
725 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
726 | fe->debugfs_dpcm_root, &dpcm->state); | |
727 | #endif | |
01d7584c LG |
728 | return 1; |
729 | } | |
730 | ||
731 | /* reparent a BE onto another FE */ | |
732 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
733 | struct snd_soc_pcm_runtime *be, int stream) | |
734 | { | |
735 | struct snd_soc_dpcm *dpcm; | |
736 | struct snd_pcm_substream *fe_substream, *be_substream; | |
737 | ||
738 | /* reparent if BE is connected to other FEs */ | |
739 | if (!be->dpcm[stream].users) | |
740 | return; | |
741 | ||
742 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
743 | ||
744 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
745 | if (dpcm->fe == fe) | |
746 | continue; | |
747 | ||
748 | dev_dbg(fe->dev, " reparent %s path %s %s %s\n", | |
749 | stream ? "capture" : "playback", | |
750 | dpcm->fe->dai_link->name, | |
751 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
752 | ||
753 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
754 | be_substream->runtime = fe_substream->runtime; | |
755 | break; | |
756 | } | |
757 | } | |
758 | ||
759 | /* disconnect a BE and FE */ | |
760 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
761 | { | |
762 | struct snd_soc_dpcm *dpcm, *d; | |
763 | ||
764 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 765 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
766 | stream ? "capture" : "playback", |
767 | dpcm->be->dai_link->name); | |
768 | ||
769 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
770 | continue; | |
771 | ||
772 | dev_dbg(fe->dev, " freed DSP %s path %s %s %s\n", | |
773 | stream ? "capture" : "playback", fe->dai_link->name, | |
774 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
775 | ||
776 | /* BEs still alive need new FE */ | |
777 | dpcm_be_reparent(fe, dpcm->be, stream); | |
778 | ||
f86dcef8 LG |
779 | #ifdef CONFIG_DEBUG_FS |
780 | debugfs_remove(dpcm->debugfs_state); | |
781 | #endif | |
01d7584c LG |
782 | list_del(&dpcm->list_be); |
783 | list_del(&dpcm->list_fe); | |
784 | kfree(dpcm); | |
785 | } | |
786 | } | |
787 | ||
788 | /* get BE for DAI widget and stream */ | |
789 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
790 | struct snd_soc_dapm_widget *widget, int stream) | |
791 | { | |
792 | struct snd_soc_pcm_runtime *be; | |
793 | int i; | |
794 | ||
795 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
796 | for (i = 0; i < card->num_links; i++) { | |
797 | be = &card->rtd[i]; | |
798 | ||
35ea0655 LG |
799 | if (!be->dai_link->no_pcm) |
800 | continue; | |
801 | ||
01d7584c LG |
802 | if (be->cpu_dai->playback_widget == widget || |
803 | be->codec_dai->playback_widget == widget) | |
804 | return be; | |
805 | } | |
806 | } else { | |
807 | ||
808 | for (i = 0; i < card->num_links; i++) { | |
809 | be = &card->rtd[i]; | |
810 | ||
35ea0655 LG |
811 | if (!be->dai_link->no_pcm) |
812 | continue; | |
813 | ||
01d7584c LG |
814 | if (be->cpu_dai->capture_widget == widget || |
815 | be->codec_dai->capture_widget == widget) | |
816 | return be; | |
817 | } | |
818 | } | |
819 | ||
103d84a3 | 820 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
821 | stream ? "capture" : "playback", widget->name); |
822 | return NULL; | |
823 | } | |
824 | ||
825 | static inline struct snd_soc_dapm_widget * | |
826 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
827 | { | |
828 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
829 | return rtd->cpu_dai->playback_widget; | |
830 | else | |
831 | return rtd->cpu_dai->capture_widget; | |
832 | } | |
833 | ||
834 | static inline struct snd_soc_dapm_widget * | |
835 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
836 | { | |
837 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
838 | return rtd->codec_dai->playback_widget; | |
839 | else | |
840 | return rtd->codec_dai->capture_widget; | |
841 | } | |
842 | ||
843 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
844 | struct snd_soc_dapm_widget *widget) | |
845 | { | |
846 | int i; | |
847 | ||
848 | for (i = 0; i < list->num_widgets; i++) { | |
849 | if (widget == list->widgets[i]) | |
850 | return 1; | |
851 | } | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
857 | int stream, struct snd_soc_dapm_widget_list **list_) | |
858 | { | |
859 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
860 | struct snd_soc_dapm_widget_list *list; | |
861 | int paths; | |
862 | ||
863 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
864 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
865 | if (list == NULL) | |
866 | return -ENOMEM; | |
867 | ||
868 | /* get number of valid DAI paths and their widgets */ | |
869 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
870 | ||
103d84a3 | 871 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
872 | stream ? "capture" : "playback"); |
873 | ||
874 | *list_ = list; | |
875 | return paths; | |
876 | } | |
877 | ||
878 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
879 | { | |
880 | kfree(*list); | |
881 | } | |
882 | ||
883 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
884 | struct snd_soc_dapm_widget_list **list_) | |
885 | { | |
886 | struct snd_soc_dpcm *dpcm; | |
887 | struct snd_soc_dapm_widget_list *list = *list_; | |
888 | struct snd_soc_dapm_widget *widget; | |
889 | int prune = 0; | |
890 | ||
891 | /* Destroy any old FE <--> BE connections */ | |
892 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
893 | ||
894 | /* is there a valid CPU DAI widget for this BE */ | |
895 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
896 | ||
897 | /* prune the BE if it's no longer in our active list */ | |
898 | if (widget && widget_in_list(list, widget)) | |
899 | continue; | |
900 | ||
901 | /* is there a valid CODEC DAI widget for this BE */ | |
902 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
903 | ||
904 | /* prune the BE if it's no longer in our active list */ | |
905 | if (widget && widget_in_list(list, widget)) | |
906 | continue; | |
907 | ||
103d84a3 | 908 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
909 | stream ? "capture" : "playback", |
910 | dpcm->be->dai_link->name, fe->dai_link->name); | |
911 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
912 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
913 | prune++; | |
914 | } | |
915 | ||
103d84a3 | 916 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
917 | return prune; |
918 | } | |
919 | ||
920 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
921 | struct snd_soc_dapm_widget_list **list_) | |
922 | { | |
923 | struct snd_soc_card *card = fe->card; | |
924 | struct snd_soc_dapm_widget_list *list = *list_; | |
925 | struct snd_soc_pcm_runtime *be; | |
926 | int i, new = 0, err; | |
927 | ||
928 | /* Create any new FE <--> BE connections */ | |
929 | for (i = 0; i < list->num_widgets; i++) { | |
930 | ||
931 | if (list->widgets[i]->id != snd_soc_dapm_dai) | |
932 | continue; | |
933 | ||
934 | /* is there a valid BE rtd for this widget */ | |
935 | be = dpcm_get_be(card, list->widgets[i], stream); | |
936 | if (!be) { | |
103d84a3 | 937 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
938 | list->widgets[i]->name); |
939 | continue; | |
940 | } | |
941 | ||
942 | /* make sure BE is a real BE */ | |
943 | if (!be->dai_link->no_pcm) | |
944 | continue; | |
945 | ||
946 | /* don't connect if FE is not running */ | |
947 | if (!fe->dpcm[stream].runtime) | |
948 | continue; | |
949 | ||
950 | /* newly connected FE and BE */ | |
951 | err = dpcm_be_connect(fe, be, stream); | |
952 | if (err < 0) { | |
103d84a3 | 953 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
954 | list->widgets[i]->name); |
955 | break; | |
956 | } else if (err == 0) /* already connected */ | |
957 | continue; | |
958 | ||
959 | /* new */ | |
960 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
961 | new++; | |
962 | } | |
963 | ||
103d84a3 | 964 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
965 | return new; |
966 | } | |
967 | ||
968 | /* | |
969 | * Find the corresponding BE DAIs that source or sink audio to this | |
970 | * FE substream. | |
971 | */ | |
972 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
973 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
974 | { | |
975 | if (new) | |
976 | return dpcm_add_paths(fe, stream, list); | |
977 | else | |
978 | return dpcm_prune_paths(fe, stream, list); | |
979 | } | |
980 | ||
981 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
982 | { | |
983 | struct snd_soc_dpcm *dpcm; | |
984 | ||
985 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
986 | dpcm->be->dpcm[stream].runtime_update = | |
987 | SND_SOC_DPCM_UPDATE_NO; | |
988 | } | |
989 | ||
990 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
991 | int stream) | |
992 | { | |
993 | struct snd_soc_dpcm *dpcm; | |
994 | ||
995 | /* disable any enabled and non active backends */ | |
996 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
997 | ||
998 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
999 | struct snd_pcm_substream *be_substream = | |
1000 | snd_soc_dpcm_get_substream(be, stream); | |
1001 | ||
1002 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1003 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1004 | stream ? "capture" : "playback", |
1005 | be->dpcm[stream].state); | |
1006 | ||
1007 | if (--be->dpcm[stream].users != 0) | |
1008 | continue; | |
1009 | ||
1010 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1011 | continue; | |
1012 | ||
1013 | soc_pcm_close(be_substream); | |
1014 | be_substream->runtime = NULL; | |
1015 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1020 | { | |
1021 | struct snd_soc_dpcm *dpcm; | |
1022 | int err, count = 0; | |
1023 | ||
1024 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1025 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1026 | ||
1027 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1028 | struct snd_pcm_substream *be_substream = | |
1029 | snd_soc_dpcm_get_substream(be, stream); | |
1030 | ||
1031 | /* is this op for this BE ? */ | |
1032 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1033 | continue; | |
1034 | ||
1035 | /* first time the dpcm is open ? */ | |
1036 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1037 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1038 | stream ? "capture" : "playback", |
1039 | be->dpcm[stream].state); | |
1040 | ||
1041 | if (be->dpcm[stream].users++ != 0) | |
1042 | continue; | |
1043 | ||
1044 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1045 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1046 | continue; | |
1047 | ||
103d84a3 | 1048 | dev_dbg(be->dev, "ASoC: open BE %s\n", be->dai_link->name); |
01d7584c LG |
1049 | |
1050 | be_substream->runtime = be->dpcm[stream].runtime; | |
1051 | err = soc_pcm_open(be_substream); | |
1052 | if (err < 0) { | |
103d84a3 | 1053 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1054 | be->dpcm[stream].users--; |
1055 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1056 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1057 | stream ? "capture" : "playback", |
1058 | be->dpcm[stream].state); | |
1059 | ||
1060 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1061 | goto unwind; | |
1062 | } | |
1063 | ||
1064 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1065 | count++; | |
1066 | } | |
1067 | ||
1068 | return count; | |
1069 | ||
1070 | unwind: | |
1071 | /* disable any enabled and non active backends */ | |
1072 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1073 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1074 | struct snd_pcm_substream *be_substream = | |
1075 | snd_soc_dpcm_get_substream(be, stream); | |
1076 | ||
1077 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1078 | continue; | |
1079 | ||
1080 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1081 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1082 | stream ? "capture" : "playback", |
1083 | be->dpcm[stream].state); | |
1084 | ||
1085 | if (--be->dpcm[stream].users != 0) | |
1086 | continue; | |
1087 | ||
1088 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1089 | continue; | |
1090 | ||
1091 | soc_pcm_close(be_substream); | |
1092 | be_substream->runtime = NULL; | |
1093 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1094 | } | |
1095 | ||
1096 | return err; | |
1097 | } | |
1098 | ||
45c0a188 | 1099 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1100 | { |
1101 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1102 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1103 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1104 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1105 | ||
1106 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1107 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1108 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1109 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1110 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1111 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1112 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1113 | } else { | |
1114 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1115 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1116 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1117 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1118 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1119 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1124 | { | |
1125 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1126 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1127 | int stream = fe_substream->stream, ret = 0; | |
1128 | ||
1129 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1130 | ||
1131 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1132 | if (ret < 0) { | |
103d84a3 | 1133 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1134 | goto be_err; |
1135 | } | |
1136 | ||
103d84a3 | 1137 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1138 | |
1139 | /* start the DAI frontend */ | |
1140 | ret = soc_pcm_open(fe_substream); | |
1141 | if (ret < 0) { | |
103d84a3 | 1142 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1143 | goto unwind; |
1144 | } | |
1145 | ||
1146 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1147 | ||
1148 | dpcm_set_fe_runtime(fe_substream); | |
1149 | snd_pcm_limit_hw_rates(runtime); | |
1150 | ||
1151 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1152 | return 0; | |
1153 | ||
1154 | unwind: | |
1155 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1156 | be_err: | |
1157 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1158 | return ret; | |
1159 | } | |
1160 | ||
1161 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1162 | { | |
1163 | struct snd_soc_dpcm *dpcm; | |
1164 | ||
1165 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1166 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1167 | ||
1168 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1169 | struct snd_pcm_substream *be_substream = | |
1170 | snd_soc_dpcm_get_substream(be, stream); | |
1171 | ||
1172 | /* is this op for this BE ? */ | |
1173 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1174 | continue; | |
1175 | ||
1176 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1177 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1178 | stream ? "capture" : "playback", |
1179 | be->dpcm[stream].state); | |
1180 | ||
1181 | if (--be->dpcm[stream].users != 0) | |
1182 | continue; | |
1183 | ||
1184 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1185 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1186 | continue; | |
1187 | ||
103d84a3 | 1188 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1189 | dpcm->fe->dai_link->name); |
1190 | ||
1191 | soc_pcm_close(be_substream); | |
1192 | be_substream->runtime = NULL; | |
1193 | ||
1194 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1195 | } | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1200 | { | |
1201 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1202 | int stream = substream->stream; | |
1203 | ||
1204 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1205 | ||
1206 | /* shutdown the BEs */ | |
1207 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1208 | ||
103d84a3 | 1209 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1210 | |
1211 | /* now shutdown the frontend */ | |
1212 | soc_pcm_close(substream); | |
1213 | ||
1214 | /* run the stream event for each BE */ | |
1215 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1216 | ||
1217 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1218 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1223 | { | |
1224 | struct snd_soc_dpcm *dpcm; | |
1225 | ||
1226 | /* only hw_params backends that are either sinks or sources | |
1227 | * to this frontend DAI */ | |
1228 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1229 | ||
1230 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1231 | struct snd_pcm_substream *be_substream = | |
1232 | snd_soc_dpcm_get_substream(be, stream); | |
1233 | ||
1234 | /* is this op for this BE ? */ | |
1235 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1236 | continue; | |
1237 | ||
1238 | /* only free hw when no longer used - check all FEs */ | |
1239 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1240 | continue; | |
1241 | ||
1242 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1243 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1244 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1245 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1246 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1247 | continue; | |
1248 | ||
103d84a3 | 1249 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1250 | dpcm->fe->dai_link->name); |
1251 | ||
1252 | soc_pcm_hw_free(be_substream); | |
1253 | ||
1254 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1255 | } | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
45c0a188 | 1260 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1261 | { |
1262 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1263 | int err, stream = substream->stream; | |
1264 | ||
1265 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1266 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1267 | ||
103d84a3 | 1268 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1269 | |
1270 | /* call hw_free on the frontend */ | |
1271 | err = soc_pcm_hw_free(substream); | |
1272 | if (err < 0) | |
103d84a3 | 1273 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1274 | fe->dai_link->name); |
1275 | ||
1276 | /* only hw_params backends that are either sinks or sources | |
1277 | * to this frontend DAI */ | |
1278 | err = dpcm_be_dai_hw_free(fe, stream); | |
1279 | ||
1280 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1281 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1282 | ||
1283 | mutex_unlock(&fe->card->mutex); | |
1284 | return 0; | |
1285 | } | |
1286 | ||
1287 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1288 | { | |
1289 | struct snd_soc_dpcm *dpcm; | |
1290 | int ret; | |
1291 | ||
1292 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1293 | ||
1294 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1295 | struct snd_pcm_substream *be_substream = | |
1296 | snd_soc_dpcm_get_substream(be, stream); | |
1297 | ||
1298 | /* is this op for this BE ? */ | |
1299 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1300 | continue; | |
1301 | ||
1302 | /* only allow hw_params() if no connected FEs are running */ | |
1303 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1304 | continue; | |
1305 | ||
1306 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1307 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1308 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1309 | continue; | |
1310 | ||
103d84a3 | 1311 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1312 | dpcm->fe->dai_link->name); |
1313 | ||
1314 | /* copy params for each dpcm */ | |
1315 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1316 | sizeof(struct snd_pcm_hw_params)); | |
1317 | ||
1318 | /* perform any hw_params fixups */ | |
1319 | if (be->dai_link->be_hw_params_fixup) { | |
1320 | ret = be->dai_link->be_hw_params_fixup(be, | |
1321 | &dpcm->hw_params); | |
1322 | if (ret < 0) { | |
1323 | dev_err(be->dev, | |
103d84a3 | 1324 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1325 | ret); |
1326 | goto unwind; | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1331 | if (ret < 0) { | |
1332 | dev_err(dpcm->be->dev, | |
103d84a3 | 1333 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1334 | goto unwind; |
1335 | } | |
1336 | ||
1337 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1338 | } | |
1339 | return 0; | |
1340 | ||
1341 | unwind: | |
1342 | /* disable any enabled and non active backends */ | |
1343 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1344 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1345 | struct snd_pcm_substream *be_substream = | |
1346 | snd_soc_dpcm_get_substream(be, stream); | |
1347 | ||
1348 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1349 | continue; | |
1350 | ||
1351 | /* only allow hw_free() if no connected FEs are running */ | |
1352 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1353 | continue; | |
1354 | ||
1355 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1356 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1357 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1358 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1359 | continue; | |
1360 | ||
1361 | soc_pcm_hw_free(be_substream); | |
1362 | } | |
1363 | ||
1364 | return ret; | |
1365 | } | |
1366 | ||
45c0a188 MB |
1367 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1368 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1369 | { |
1370 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1371 | int ret, stream = substream->stream; | |
1372 | ||
1373 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1374 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1375 | ||
1376 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1377 | sizeof(struct snd_pcm_hw_params)); | |
1378 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1379 | if (ret < 0) { | |
103d84a3 | 1380 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1381 | goto out; |
1382 | } | |
1383 | ||
103d84a3 | 1384 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1385 | fe->dai_link->name, params_rate(params), |
1386 | params_channels(params), params_format(params)); | |
1387 | ||
1388 | /* call hw_params on the frontend */ | |
1389 | ret = soc_pcm_hw_params(substream, params); | |
1390 | if (ret < 0) { | |
103d84a3 | 1391 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1392 | dpcm_be_dai_hw_free(fe, stream); |
1393 | } else | |
1394 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1395 | ||
1396 | out: | |
1397 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1398 | mutex_unlock(&fe->card->mutex); | |
1399 | return ret; | |
1400 | } | |
1401 | ||
1402 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1403 | struct snd_pcm_substream *substream, int cmd) | |
1404 | { | |
1405 | int ret; | |
1406 | ||
103d84a3 | 1407 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1408 | dpcm->fe->dai_link->name, cmd); |
1409 | ||
1410 | ret = soc_pcm_trigger(substream, cmd); | |
1411 | if (ret < 0) | |
103d84a3 | 1412 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1413 | |
1414 | return ret; | |
1415 | } | |
1416 | ||
45c0a188 MB |
1417 | static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
1418 | int cmd) | |
01d7584c LG |
1419 | { |
1420 | struct snd_soc_dpcm *dpcm; | |
1421 | int ret = 0; | |
1422 | ||
1423 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1424 | ||
1425 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1426 | struct snd_pcm_substream *be_substream = | |
1427 | snd_soc_dpcm_get_substream(be, stream); | |
1428 | ||
1429 | /* is this op for this BE ? */ | |
1430 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1431 | continue; | |
1432 | ||
1433 | switch (cmd) { | |
1434 | case SNDRV_PCM_TRIGGER_START: | |
1435 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1436 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1437 | continue; | |
1438 | ||
1439 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1440 | if (ret) | |
1441 | return ret; | |
1442 | ||
1443 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1444 | break; | |
1445 | case SNDRV_PCM_TRIGGER_RESUME: | |
1446 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1447 | continue; | |
1448 | ||
1449 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1450 | if (ret) | |
1451 | return ret; | |
1452 | ||
1453 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1454 | break; | |
1455 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1456 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1457 | continue; | |
1458 | ||
1459 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1460 | if (ret) | |
1461 | return ret; | |
1462 | ||
1463 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1464 | break; | |
1465 | case SNDRV_PCM_TRIGGER_STOP: | |
1466 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1467 | continue; | |
1468 | ||
1469 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1470 | continue; | |
1471 | ||
1472 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1473 | if (ret) | |
1474 | return ret; | |
1475 | ||
1476 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1477 | break; | |
1478 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1479 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1480 | continue; | |
1481 | ||
1482 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1483 | continue; | |
1484 | ||
1485 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1486 | if (ret) | |
1487 | return ret; | |
1488 | ||
1489 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1490 | break; | |
1491 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1492 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1493 | continue; | |
1494 | ||
1495 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1496 | continue; | |
1497 | ||
1498 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1499 | if (ret) | |
1500 | return ret; | |
1501 | ||
1502 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1503 | break; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | return ret; | |
1508 | } | |
1509 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1510 | ||
45c0a188 | 1511 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1512 | { |
1513 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1514 | int stream = substream->stream, ret; | |
1515 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1516 | ||
1517 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1518 | ||
1519 | switch (trigger) { | |
1520 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1521 | /* call trigger on the frontend before the backend. */ | |
1522 | ||
103d84a3 | 1523 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1524 | fe->dai_link->name, cmd); |
1525 | ||
1526 | ret = soc_pcm_trigger(substream, cmd); | |
1527 | if (ret < 0) { | |
103d84a3 | 1528 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1529 | goto out; |
1530 | } | |
1531 | ||
1532 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1533 | break; | |
1534 | case SND_SOC_DPCM_TRIGGER_POST: | |
1535 | /* call trigger on the frontend after the backend. */ | |
1536 | ||
1537 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1538 | if (ret < 0) { | |
103d84a3 | 1539 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1540 | goto out; |
1541 | } | |
1542 | ||
103d84a3 | 1543 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1544 | fe->dai_link->name, cmd); |
1545 | ||
1546 | ret = soc_pcm_trigger(substream, cmd); | |
1547 | break; | |
07bf84aa LG |
1548 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1549 | /* bespoke trigger() - handles both FE and BEs */ | |
1550 | ||
103d84a3 | 1551 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1552 | fe->dai_link->name, cmd); |
1553 | ||
1554 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1555 | if (ret < 0) { | |
103d84a3 | 1556 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1557 | goto out; |
1558 | } | |
1559 | break; | |
01d7584c | 1560 | default: |
103d84a3 | 1561 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1562 | fe->dai_link->name); |
1563 | ret = -EINVAL; | |
1564 | goto out; | |
1565 | } | |
1566 | ||
1567 | switch (cmd) { | |
1568 | case SNDRV_PCM_TRIGGER_START: | |
1569 | case SNDRV_PCM_TRIGGER_RESUME: | |
1570 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1571 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1572 | break; | |
1573 | case SNDRV_PCM_TRIGGER_STOP: | |
1574 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1575 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1576 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1577 | break; | |
1578 | } | |
1579 | ||
1580 | out: | |
1581 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1582 | return ret; | |
1583 | } | |
1584 | ||
1585 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1586 | { | |
1587 | struct snd_soc_dpcm *dpcm; | |
1588 | int ret = 0; | |
1589 | ||
1590 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1591 | ||
1592 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1593 | struct snd_pcm_substream *be_substream = | |
1594 | snd_soc_dpcm_get_substream(be, stream); | |
1595 | ||
1596 | /* is this op for this BE ? */ | |
1597 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1598 | continue; | |
1599 | ||
1600 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1601 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1602 | continue; | |
1603 | ||
103d84a3 | 1604 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1605 | dpcm->fe->dai_link->name); |
1606 | ||
1607 | ret = soc_pcm_prepare(be_substream); | |
1608 | if (ret < 0) { | |
103d84a3 | 1609 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1610 | ret); |
1611 | break; | |
1612 | } | |
1613 | ||
1614 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1615 | } | |
1616 | return ret; | |
1617 | } | |
1618 | ||
45c0a188 | 1619 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1620 | { |
1621 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1622 | int stream = substream->stream, ret = 0; | |
1623 | ||
1624 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1625 | ||
103d84a3 | 1626 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1627 | |
1628 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1629 | ||
1630 | /* there is no point preparing this FE if there are no BEs */ | |
1631 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1632 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1633 | fe->dai_link->name); |
1634 | ret = -EINVAL; | |
1635 | goto out; | |
1636 | } | |
1637 | ||
1638 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1639 | if (ret < 0) | |
1640 | goto out; | |
1641 | ||
1642 | /* call prepare on the frontend */ | |
1643 | ret = soc_pcm_prepare(substream); | |
1644 | if (ret < 0) { | |
103d84a3 | 1645 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1646 | fe->dai_link->name); |
1647 | goto out; | |
1648 | } | |
1649 | ||
1650 | /* run the stream event for each BE */ | |
1651 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1652 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1653 | ||
1654 | out: | |
1655 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1656 | mutex_unlock(&fe->card->mutex); | |
1657 | ||
1658 | return ret; | |
1659 | } | |
1660 | ||
be3f3f2c LG |
1661 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1662 | unsigned int cmd, void *arg) | |
1663 | { | |
1664 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1665 | struct snd_soc_platform *platform = rtd->platform; | |
1666 | ||
1667 | if (platform->driver->ops->ioctl) | |
1668 | return platform->driver->ops->ioctl(substream, cmd, arg); | |
1669 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1670 | } | |
1671 | ||
618dae11 LG |
1672 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1673 | { | |
07bf84aa LG |
1674 | struct snd_pcm_substream *substream = |
1675 | snd_soc_dpcm_get_substream(fe, stream); | |
1676 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1677 | int err; |
1678 | ||
103d84a3 | 1679 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1680 | stream ? "capture" : "playback", fe->dai_link->name); |
1681 | ||
07bf84aa LG |
1682 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1683 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1684 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1685 | fe->dai_link->name); |
1686 | ||
1687 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1688 | if (err < 0) | |
103d84a3 | 1689 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1690 | } else { |
103d84a3 | 1691 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1692 | fe->dai_link->name); |
1693 | ||
1694 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1695 | if (err < 0) | |
103d84a3 | 1696 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1697 | } |
618dae11 LG |
1698 | |
1699 | err = dpcm_be_dai_hw_free(fe, stream); | |
1700 | if (err < 0) | |
103d84a3 | 1701 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1702 | |
1703 | err = dpcm_be_dai_shutdown(fe, stream); | |
1704 | if (err < 0) | |
103d84a3 | 1705 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1706 | |
1707 | /* run the stream event for each BE */ | |
1708 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1714 | { | |
07bf84aa LG |
1715 | struct snd_pcm_substream *substream = |
1716 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1717 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1718 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1719 | int ret; |
1720 | ||
103d84a3 | 1721 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1722 | stream ? "capture" : "playback", fe->dai_link->name); |
1723 | ||
1724 | /* Only start the BE if the FE is ready */ | |
1725 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1726 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1727 | return -EINVAL; | |
1728 | ||
1729 | /* startup must always be called for new BEs */ | |
1730 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1731 | if (ret < 0) |
618dae11 | 1732 | goto disconnect; |
618dae11 LG |
1733 | |
1734 | /* keep going if FE state is > open */ | |
1735 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1736 | return 0; | |
01d7584c | 1737 | |
618dae11 | 1738 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1739 | if (ret < 0) |
618dae11 | 1740 | goto close; |
618dae11 LG |
1741 | |
1742 | /* keep going if FE state is > hw_params */ | |
1743 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1744 | return 0; | |
1745 | ||
1746 | ||
1747 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1748 | if (ret < 0) |
618dae11 | 1749 | goto hw_free; |
618dae11 LG |
1750 | |
1751 | /* run the stream event for each BE */ | |
1752 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1753 | ||
1754 | /* keep going if FE state is > prepare */ | |
1755 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1756 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1757 | return 0; | |
1758 | ||
07bf84aa LG |
1759 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1760 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1761 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1762 | fe->dai_link->name); |
618dae11 | 1763 | |
07bf84aa LG |
1764 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1765 | if (ret < 0) { | |
103d84a3 | 1766 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1767 | goto hw_free; |
1768 | } | |
1769 | } else { | |
103d84a3 | 1770 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1771 | fe->dai_link->name); |
1772 | ||
1773 | ret = dpcm_be_dai_trigger(fe, stream, | |
1774 | SNDRV_PCM_TRIGGER_START); | |
1775 | if (ret < 0) { | |
103d84a3 | 1776 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1777 | goto hw_free; |
1778 | } | |
618dae11 LG |
1779 | } |
1780 | ||
1781 | return 0; | |
1782 | ||
1783 | hw_free: | |
1784 | dpcm_be_dai_hw_free(fe, stream); | |
1785 | close: | |
1786 | dpcm_be_dai_shutdown(fe, stream); | |
1787 | disconnect: | |
1788 | /* disconnect any non started BEs */ | |
1789 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1790 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1791 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1792 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1793 | } | |
1794 | ||
1795 | return ret; | |
1796 | } | |
1797 | ||
1798 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1799 | { | |
1800 | int ret; | |
1801 | ||
1802 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1803 | ret = dpcm_run_update_startup(fe, stream); | |
1804 | if (ret < 0) | |
103d84a3 | 1805 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1806 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1807 | ||
1808 | return ret; | |
1809 | } | |
1810 | ||
1811 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1812 | { | |
1813 | int ret; | |
1814 | ||
1815 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1816 | ret = dpcm_run_update_shutdown(fe, stream); | |
1817 | if (ret < 0) | |
103d84a3 | 1818 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1819 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1820 | ||
1821 | return ret; | |
1822 | } | |
1823 | ||
1824 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1825 | * any DAI links. | |
1826 | */ | |
1827 | int soc_dpcm_runtime_update(struct snd_soc_dapm_widget *widget) | |
1828 | { | |
1829 | struct snd_soc_card *card; | |
1830 | int i, old, new, paths; | |
1831 | ||
1832 | if (widget->codec) | |
1833 | card = widget->codec->card; | |
1834 | else if (widget->platform) | |
1835 | card = widget->platform->card; | |
1836 | else | |
1837 | return -EINVAL; | |
1838 | ||
1839 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1840 | for (i = 0; i < card->num_rtd; i++) { | |
1841 | struct snd_soc_dapm_widget_list *list; | |
1842 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1843 | ||
1844 | /* make sure link is FE */ | |
1845 | if (!fe->dai_link->dynamic) | |
1846 | continue; | |
1847 | ||
1848 | /* only check active links */ | |
1849 | if (!fe->cpu_dai->active) | |
1850 | continue; | |
1851 | ||
1852 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1853 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1854 | fe->dai_link->name); |
1855 | ||
1856 | /* skip if FE doesn't have playback capability */ | |
1857 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1858 | goto capture; | |
1859 | ||
1860 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1861 | if (paths < 0) { | |
103d84a3 | 1862 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1863 | fe->dai_link->name, "playback"); |
1864 | mutex_unlock(&card->mutex); | |
1865 | return paths; | |
1866 | } | |
1867 | ||
1868 | /* update any new playback paths */ | |
1869 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1870 | if (new) { | |
1871 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1872 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1873 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1874 | } | |
1875 | ||
1876 | /* update any old playback paths */ | |
1877 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1878 | if (old) { | |
1879 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1880 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1881 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1882 | } | |
1883 | ||
1884 | capture: | |
1885 | /* skip if FE doesn't have capture capability */ | |
1886 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1887 | continue; | |
1888 | ||
1889 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1890 | if (paths < 0) { | |
103d84a3 | 1891 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1892 | fe->dai_link->name, "capture"); |
1893 | mutex_unlock(&card->mutex); | |
1894 | return paths; | |
1895 | } | |
1896 | ||
1897 | /* update any new capture paths */ | |
1898 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1899 | if (new) { | |
1900 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1901 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1902 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1903 | } | |
1904 | ||
1905 | /* update any old capture paths */ | |
1906 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1907 | if (old) { | |
1908 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1909 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1910 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1911 | } | |
1912 | ||
1913 | dpcm_path_put(&list); | |
1914 | } | |
1915 | ||
1916 | mutex_unlock(&card->mutex); | |
1917 | return 0; | |
1918 | } | |
01d7584c LG |
1919 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1920 | { | |
1921 | struct snd_soc_dpcm *dpcm; | |
1922 | struct list_head *clients = | |
1923 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1924 | ||
1925 | list_for_each_entry(dpcm, clients, list_be) { | |
1926 | ||
1927 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1928 | struct snd_soc_dai *dai = be->codec_dai; | |
1929 | struct snd_soc_dai_driver *drv = dai->driver; | |
1930 | ||
1931 | if (be->dai_link->ignore_suspend) | |
1932 | continue; | |
1933 | ||
103d84a3 | 1934 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c LG |
1935 | |
1936 | if (drv->ops->digital_mute && dai->playback_active) | |
1937 | drv->ops->digital_mute(dai, mute); | |
1938 | } | |
1939 | ||
1940 | return 0; | |
1941 | } | |
1942 | ||
45c0a188 | 1943 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1944 | { |
1945 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1946 | struct snd_soc_dpcm *dpcm; | |
1947 | struct snd_soc_dapm_widget_list *list; | |
1948 | int ret; | |
1949 | int stream = fe_substream->stream; | |
1950 | ||
1951 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1952 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1953 | ||
1954 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
103d84a3 | 1955 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 1956 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
1957 | } |
1958 | ||
1959 | /* calculate valid and active FE <-> BE dpcms */ | |
1960 | dpcm_process_paths(fe, stream, &list, 1); | |
1961 | ||
1962 | ret = dpcm_fe_dai_startup(fe_substream); | |
1963 | if (ret < 0) { | |
1964 | /* clean up all links */ | |
1965 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1966 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1967 | ||
1968 | dpcm_be_disconnect(fe, stream); | |
1969 | fe->dpcm[stream].runtime = NULL; | |
1970 | } | |
1971 | ||
1972 | dpcm_clear_pending_state(fe, stream); | |
1973 | dpcm_path_put(&list); | |
1974 | mutex_unlock(&fe->card->mutex); | |
1975 | return ret; | |
1976 | } | |
1977 | ||
45c0a188 | 1978 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1979 | { |
1980 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1981 | struct snd_soc_dpcm *dpcm; | |
1982 | int stream = fe_substream->stream, ret; | |
1983 | ||
1984 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1985 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
1986 | ||
1987 | /* mark FE's links ready to prune */ | |
1988 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1989 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1990 | ||
1991 | dpcm_be_disconnect(fe, stream); | |
1992 | ||
1993 | fe->dpcm[stream].runtime = NULL; | |
1994 | mutex_unlock(&fe->card->mutex); | |
1995 | return ret; | |
1996 | } | |
1997 | ||
ddee627c LG |
1998 | /* create a new pcm */ |
1999 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2000 | { | |
ddee627c LG |
2001 | struct snd_soc_platform *platform = rtd->platform; |
2002 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2003 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2004 | struct snd_pcm *pcm; | |
2005 | char new_name[64]; | |
2006 | int ret = 0, playback = 0, capture = 0; | |
2007 | ||
01d7584c LG |
2008 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
2009 | if (cpu_dai->driver->playback.channels_min) | |
2010 | playback = 1; | |
2011 | if (cpu_dai->driver->capture.channels_min) | |
2012 | capture = 1; | |
2013 | } else { | |
2014 | if (codec_dai->driver->playback.channels_min) | |
2015 | playback = 1; | |
2016 | if (codec_dai->driver->capture.channels_min) | |
2017 | capture = 1; | |
2018 | } | |
2019 | ||
2020 | /* create the PCM */ | |
2021 | if (rtd->dai_link->no_pcm) { | |
2022 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2023 | rtd->dai_link->stream_name); | |
2024 | ||
2025 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2026 | playback, capture, &pcm); | |
2027 | } else { | |
2028 | if (rtd->dai_link->dynamic) | |
2029 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2030 | rtd->dai_link->stream_name); | |
2031 | else | |
2032 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2033 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2034 | ||
2035 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2036 | capture, &pcm); | |
2037 | } | |
ddee627c | 2038 | if (ret < 0) { |
103d84a3 | 2039 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2040 | rtd->dai_link->name); |
ddee627c LG |
2041 | return ret; |
2042 | } | |
103d84a3 | 2043 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2044 | |
2045 | /* DAPM dai link stream work */ | |
2046 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2047 | ||
2048 | rtd->pcm = pcm; | |
2049 | pcm->private_data = rtd; | |
01d7584c LG |
2050 | |
2051 | if (rtd->dai_link->no_pcm) { | |
2052 | if (playback) | |
2053 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2054 | if (capture) | |
2055 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2056 | goto out; | |
2057 | } | |
2058 | ||
2059 | /* ASoC PCM operations */ | |
2060 | if (rtd->dai_link->dynamic) { | |
2061 | rtd->ops.open = dpcm_fe_dai_open; | |
2062 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2063 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2064 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2065 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2066 | rtd->ops.close = dpcm_fe_dai_close; | |
2067 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2068 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2069 | } else { |
2070 | rtd->ops.open = soc_pcm_open; | |
2071 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2072 | rtd->ops.prepare = soc_pcm_prepare; | |
2073 | rtd->ops.trigger = soc_pcm_trigger; | |
2074 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2075 | rtd->ops.close = soc_pcm_close; | |
2076 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2077 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2078 | } |
2079 | ||
ddee627c | 2080 | if (platform->driver->ops) { |
01d7584c LG |
2081 | rtd->ops.ack = platform->driver->ops->ack; |
2082 | rtd->ops.copy = platform->driver->ops->copy; | |
2083 | rtd->ops.silence = platform->driver->ops->silence; | |
2084 | rtd->ops.page = platform->driver->ops->page; | |
2085 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2086 | } |
2087 | ||
2088 | if (playback) | |
01d7584c | 2089 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2090 | |
2091 | if (capture) | |
01d7584c | 2092 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2093 | |
2094 | if (platform->driver->pcm_new) { | |
2095 | ret = platform->driver->pcm_new(rtd); | |
2096 | if (ret < 0) { | |
b1bc7b3c MB |
2097 | dev_err(platform->dev, |
2098 | "ASoC: pcm constructor failed: %d\n", | |
2099 | ret); | |
ddee627c LG |
2100 | return ret; |
2101 | } | |
2102 | } | |
2103 | ||
2104 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2105 | out: |
5cb9b748 | 2106 | dev_info(rtd->card->dev, " %s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2107 | cpu_dai->name); |
2108 | return ret; | |
2109 | } | |
01d7584c LG |
2110 | |
2111 | /* is the current PCM operation for this FE ? */ | |
2112 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2113 | { | |
2114 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2115 | return 1; | |
2116 | return 0; | |
2117 | } | |
2118 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2119 | ||
2120 | /* is the current PCM operation for this BE ? */ | |
2121 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2122 | struct snd_soc_pcm_runtime *be, int stream) | |
2123 | { | |
2124 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2125 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2126 | be->dpcm[stream].runtime_update)) | |
2127 | return 1; | |
2128 | return 0; | |
2129 | } | |
2130 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2131 | ||
2132 | /* get the substream for this BE */ | |
2133 | struct snd_pcm_substream * | |
2134 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2135 | { | |
2136 | return be->pcm->streams[stream].substream; | |
2137 | } | |
2138 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2139 | ||
2140 | /* get the BE runtime state */ | |
2141 | enum snd_soc_dpcm_state | |
2142 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2143 | { | |
2144 | return be->dpcm[stream].state; | |
2145 | } | |
2146 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2147 | ||
2148 | /* set the BE runtime state */ | |
2149 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2150 | int stream, enum snd_soc_dpcm_state state) | |
2151 | { | |
2152 | be->dpcm[stream].state = state; | |
2153 | } | |
2154 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2155 | ||
2156 | /* | |
2157 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2158 | * are not running, paused or suspended for the specified stream direction. | |
2159 | */ | |
2160 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2161 | struct snd_soc_pcm_runtime *be, int stream) | |
2162 | { | |
2163 | struct snd_soc_dpcm *dpcm; | |
2164 | int state; | |
2165 | ||
2166 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2167 | ||
2168 | if (dpcm->fe == fe) | |
2169 | continue; | |
2170 | ||
2171 | state = dpcm->fe->dpcm[stream].state; | |
2172 | if (state == SND_SOC_DPCM_STATE_START || | |
2173 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2174 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | /* it's safe to free/stop this BE DAI */ | |
2179 | return 1; | |
2180 | } | |
2181 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2182 | ||
2183 | /* | |
2184 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2185 | * running, paused or suspended for the specified stream direction. | |
2186 | */ | |
2187 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2188 | struct snd_soc_pcm_runtime *be, int stream) | |
2189 | { | |
2190 | struct snd_soc_dpcm *dpcm; | |
2191 | int state; | |
2192 | ||
2193 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2194 | ||
2195 | if (dpcm->fe == fe) | |
2196 | continue; | |
2197 | ||
2198 | state = dpcm->fe->dpcm[stream].state; | |
2199 | if (state == SND_SOC_DPCM_STATE_START || | |
2200 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2201 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2202 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2203 | return 0; | |
2204 | } | |
2205 | ||
2206 | /* it's safe to change hw_params */ | |
2207 | return 1; | |
2208 | } | |
2209 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2210 | |
07bf84aa LG |
2211 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2212 | int cmd, struct snd_soc_platform *platform) | |
2213 | { | |
2214 | if (platform->driver->ops->trigger) | |
2215 | return platform->driver->ops->trigger(substream, cmd); | |
2216 | return 0; | |
2217 | } | |
2218 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2219 | ||
f86dcef8 LG |
2220 | #ifdef CONFIG_DEBUG_FS |
2221 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2222 | { | |
2223 | switch (state) { | |
2224 | case SND_SOC_DPCM_STATE_NEW: | |
2225 | return "new"; | |
2226 | case SND_SOC_DPCM_STATE_OPEN: | |
2227 | return "open"; | |
2228 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2229 | return "hw_params"; | |
2230 | case SND_SOC_DPCM_STATE_PREPARE: | |
2231 | return "prepare"; | |
2232 | case SND_SOC_DPCM_STATE_START: | |
2233 | return "start"; | |
2234 | case SND_SOC_DPCM_STATE_STOP: | |
2235 | return "stop"; | |
2236 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2237 | return "suspend"; | |
2238 | case SND_SOC_DPCM_STATE_PAUSED: | |
2239 | return "paused"; | |
2240 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2241 | return "hw_free"; | |
2242 | case SND_SOC_DPCM_STATE_CLOSE: | |
2243 | return "close"; | |
2244 | } | |
2245 | ||
2246 | return "unknown"; | |
2247 | } | |
2248 | ||
f86dcef8 LG |
2249 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2250 | int stream, char *buf, size_t size) | |
2251 | { | |
2252 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2253 | struct snd_soc_dpcm *dpcm; | |
2254 | ssize_t offset = 0; | |
2255 | ||
2256 | /* FE state */ | |
2257 | offset += snprintf(buf + offset, size - offset, | |
2258 | "[%s - %s]\n", fe->dai_link->name, | |
2259 | stream ? "Capture" : "Playback"); | |
2260 | ||
2261 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2262 | dpcm_state_string(fe->dpcm[stream].state)); | |
2263 | ||
2264 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2265 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2266 | offset += snprintf(buf + offset, size - offset, | |
2267 | "Hardware Params: " | |
2268 | "Format = %s, Channels = %d, Rate = %d\n", | |
2269 | snd_pcm_format_name(params_format(params)), | |
2270 | params_channels(params), | |
2271 | params_rate(params)); | |
2272 | ||
2273 | /* BEs state */ | |
2274 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2275 | ||
2276 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2277 | offset += snprintf(buf + offset, size - offset, | |
2278 | " No active DSP links\n"); | |
2279 | goto out; | |
2280 | } | |
2281 | ||
2282 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2283 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2284 | params = &dpcm->hw_params; | |
2285 | ||
2286 | offset += snprintf(buf + offset, size - offset, | |
2287 | "- %s\n", be->dai_link->name); | |
2288 | ||
2289 | offset += snprintf(buf + offset, size - offset, | |
2290 | " State: %s\n", | |
2291 | dpcm_state_string(be->dpcm[stream].state)); | |
2292 | ||
2293 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2294 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2295 | offset += snprintf(buf + offset, size - offset, | |
2296 | " Hardware Params: " | |
2297 | "Format = %s, Channels = %d, Rate = %d\n", | |
2298 | snd_pcm_format_name(params_format(params)), | |
2299 | params_channels(params), | |
2300 | params_rate(params)); | |
2301 | } | |
2302 | ||
2303 | out: | |
2304 | return offset; | |
2305 | } | |
2306 | ||
2307 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2308 | size_t count, loff_t *ppos) | |
2309 | { | |
2310 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2311 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2312 | char *buf; | |
2313 | ||
2314 | buf = kmalloc(out_count, GFP_KERNEL); | |
2315 | if (!buf) | |
2316 | return -ENOMEM; | |
2317 | ||
2318 | if (fe->cpu_dai->driver->playback.channels_min) | |
2319 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2320 | buf + offset, out_count - offset); | |
2321 | ||
2322 | if (fe->cpu_dai->driver->capture.channels_min) | |
2323 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2324 | buf + offset, out_count - offset); | |
2325 | ||
f57b8488 | 2326 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2327 | |
f57b8488 LG |
2328 | kfree(buf); |
2329 | return ret; | |
f86dcef8 LG |
2330 | } |
2331 | ||
2332 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2333 | .open = simple_open, |
f86dcef8 LG |
2334 | .read = dpcm_state_read_file, |
2335 | .llseek = default_llseek, | |
2336 | }; | |
2337 | ||
2338 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2339 | { | |
b3bba9a1 MB |
2340 | if (!rtd->dai_link) |
2341 | return 0; | |
2342 | ||
f86dcef8 LG |
2343 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2344 | rtd->card->debugfs_card_root); | |
2345 | if (!rtd->debugfs_dpcm_root) { | |
2346 | dev_dbg(rtd->dev, | |
2347 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2348 | rtd->dai_link->name); | |
2349 | return -EINVAL; | |
2350 | } | |
2351 | ||
f57b8488 | 2352 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2353 | rtd->debugfs_dpcm_root, |
2354 | rtd, &dpcm_state_fops); | |
2355 | ||
2356 | return 0; | |
2357 | } | |
2358 | #endif |