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 | ||
90996f43 LPC |
36 | /** |
37 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
38 | * @substream: the pcm substream | |
39 | * @hw: the hardware parameters | |
40 | * | |
41 | * Sets the substream runtime hardware parameters. | |
42 | */ | |
43 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
44 | const struct snd_pcm_hardware *hw) | |
45 | { | |
46 | struct snd_pcm_runtime *runtime = substream->runtime; | |
47 | runtime->hw.info = hw->info; | |
48 | runtime->hw.formats = hw->formats; | |
49 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
50 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
51 | runtime->hw.periods_min = hw->periods_min; | |
52 | runtime->hw.periods_max = hw->periods_max; | |
53 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
54 | runtime->hw.fifo_size = hw->fifo_size; | |
55 | return 0; | |
56 | } | |
57 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
58 | ||
01d7584c LG |
59 | /* DPCM stream event, send event to FE and all active BEs. */ |
60 | static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, | |
61 | int event) | |
62 | { | |
63 | struct snd_soc_dpcm *dpcm; | |
64 | ||
65 | list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) { | |
66 | ||
67 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
68 | ||
103d84a3 | 69 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
70 | be->dai_link->name, event, dir); |
71 | ||
72 | snd_soc_dapm_stream_event(be, dir, event); | |
73 | } | |
74 | ||
75 | snd_soc_dapm_stream_event(fe, dir, event); | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
17841020 DA |
80 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
81 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
82 | { |
83 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
84 | int ret; |
85 | ||
17841020 | 86 | if (!soc_dai->driver->symmetric_rates && |
ddee627c LG |
87 | !rtd->dai_link->symmetric_rates) |
88 | return 0; | |
89 | ||
90 | /* This can happen if multiple streams are starting simultaneously - | |
91 | * the second can need to get its constraints before the first has | |
92 | * picked a rate. Complain and allow the application to carry on. | |
93 | */ | |
17841020 DA |
94 | if (!soc_dai->rate) { |
95 | dev_warn(soc_dai->dev, | |
103d84a3 | 96 | "ASoC: Not enforcing symmetric_rates due to race\n"); |
ddee627c LG |
97 | return 0; |
98 | } | |
99 | ||
103d84a3 | 100 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", soc_dai->rate); |
ddee627c LG |
101 | |
102 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
103 | SNDRV_PCM_HW_PARAM_RATE, | |
17841020 | 104 | soc_dai->rate, soc_dai->rate); |
ddee627c | 105 | if (ret < 0) { |
17841020 | 106 | dev_err(soc_dai->dev, |
103d84a3 LG |
107 | "ASoC: Unable to apply rate symmetry constraint: %d\n", |
108 | ret); | |
ddee627c LG |
109 | return ret; |
110 | } | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
58ba9b25 MB |
115 | /* |
116 | * List of sample sizes that might go over the bus for parameter | |
117 | * application. There ought to be a wildcard sample size for things | |
118 | * like the DAC/ADC resolution to use but there isn't right now. | |
119 | */ | |
120 | static int sample_sizes[] = { | |
88e33954 | 121 | 24, 32, |
58ba9b25 MB |
122 | }; |
123 | ||
124 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
125 | struct snd_soc_dai *dai) | |
126 | { | |
127 | int ret, i, bits; | |
128 | ||
129 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
130 | bits = dai->driver->playback.sig_bits; | |
131 | else | |
132 | bits = dai->driver->capture.sig_bits; | |
133 | ||
134 | if (!bits) | |
135 | return; | |
136 | ||
137 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
138 | if (bits >= sample_sizes[i]) |
139 | continue; | |
140 | ||
141 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
142 | sample_sizes[i], bits); | |
58ba9b25 MB |
143 | if (ret != 0) |
144 | dev_warn(dai->dev, | |
103d84a3 | 145 | "ASoC: Failed to set MSB %d/%d: %d\n", |
58ba9b25 MB |
146 | bits, sample_sizes[i], ret); |
147 | } | |
148 | } | |
149 | ||
bd477c31 LPC |
150 | static void soc_pcm_init_runtime_hw(struct snd_pcm_hardware *hw, |
151 | struct snd_soc_pcm_stream *codec_stream, | |
152 | struct snd_soc_pcm_stream *cpu_stream) | |
153 | { | |
154 | hw->rate_min = max(codec_stream->rate_min, cpu_stream->rate_min); | |
155 | hw->rate_max = max(codec_stream->rate_max, cpu_stream->rate_max); | |
156 | hw->channels_min = max(codec_stream->channels_min, | |
157 | cpu_stream->channels_min); | |
158 | hw->channels_max = min(codec_stream->channels_max, | |
159 | cpu_stream->channels_max); | |
160 | hw->formats = codec_stream->formats & cpu_stream->formats; | |
161 | hw->rates = codec_stream->rates & cpu_stream->rates; | |
162 | if (codec_stream->rates | |
163 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
164 | hw->rates |= cpu_stream->rates; | |
165 | if (cpu_stream->rates | |
166 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
167 | hw->rates |= codec_stream->rates; | |
168 | } | |
169 | ||
ddee627c LG |
170 | /* |
171 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
172 | * then initialized and any private data can be allocated. This also calls | |
173 | * startup for the cpu DAI, platform, machine and codec DAI. | |
174 | */ | |
175 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
176 | { | |
177 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
178 | struct snd_pcm_runtime *runtime = substream->runtime; | |
179 | struct snd_soc_platform *platform = rtd->platform; | |
180 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
181 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
182 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
183 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
184 | int ret = 0; | |
185 | ||
d6652ef8 MB |
186 | pm_runtime_get_sync(cpu_dai->dev); |
187 | pm_runtime_get_sync(codec_dai->dev); | |
188 | pm_runtime_get_sync(platform->dev); | |
189 | ||
b8c0dab9 | 190 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
191 | |
192 | /* startup the audio subsystem */ | |
193 | if (cpu_dai->driver->ops->startup) { | |
194 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); | |
195 | if (ret < 0) { | |
103d84a3 LG |
196 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
197 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
198 | goto out; |
199 | } | |
200 | } | |
201 | ||
202 | if (platform->driver->ops && platform->driver->ops->open) { | |
203 | ret = platform->driver->ops->open(substream); | |
204 | if (ret < 0) { | |
103d84a3 LG |
205 | dev_err(platform->dev, "ASoC: can't open platform" |
206 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
207 | goto platform_err; |
208 | } | |
209 | } | |
210 | ||
211 | if (codec_dai->driver->ops->startup) { | |
212 | ret = codec_dai->driver->ops->startup(substream, codec_dai); | |
213 | if (ret < 0) { | |
103d84a3 LG |
214 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
215 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
216 | goto codec_dai_err; |
217 | } | |
218 | } | |
219 | ||
220 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
221 | ret = rtd->dai_link->ops->startup(substream); | |
222 | if (ret < 0) { | |
103d84a3 | 223 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 224 | rtd->dai_link->name, ret); |
ddee627c LG |
225 | goto machine_err; |
226 | } | |
227 | } | |
228 | ||
01d7584c LG |
229 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
230 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
231 | goto dynamic; | |
232 | ||
ddee627c LG |
233 | /* Check that the codec and cpu DAIs are compatible */ |
234 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
bd477c31 LPC |
235 | soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->playback, |
236 | &cpu_dai_drv->playback); | |
ddee627c | 237 | } else { |
bd477c31 LPC |
238 | soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->capture, |
239 | &cpu_dai_drv->capture); | |
ddee627c LG |
240 | } |
241 | ||
242 | ret = -EINVAL; | |
243 | snd_pcm_limit_hw_rates(runtime); | |
244 | if (!runtime->hw.rates) { | |
103d84a3 | 245 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
246 | codec_dai->name, cpu_dai->name); |
247 | goto config_err; | |
248 | } | |
249 | if (!runtime->hw.formats) { | |
103d84a3 | 250 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
251 | codec_dai->name, cpu_dai->name); |
252 | goto config_err; | |
253 | } | |
254 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
255 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 256 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
257 | codec_dai->name, cpu_dai->name); |
258 | goto config_err; | |
259 | } | |
260 | ||
58ba9b25 MB |
261 | soc_pcm_apply_msb(substream, codec_dai); |
262 | soc_pcm_apply_msb(substream, cpu_dai); | |
263 | ||
ddee627c | 264 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
265 | if (cpu_dai->active) { |
266 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
267 | if (ret != 0) | |
268 | goto config_err; | |
269 | } | |
270 | ||
271 | if (codec_dai->active) { | |
272 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
273 | if (ret != 0) |
274 | goto config_err; | |
275 | } | |
276 | ||
103d84a3 | 277 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 278 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
279 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
280 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 281 | runtime->hw.channels_max); |
103d84a3 | 282 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
283 | runtime->hw.rate_max); |
284 | ||
01d7584c | 285 | dynamic: |
ddee627c LG |
286 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
287 | cpu_dai->playback_active++; | |
288 | codec_dai->playback_active++; | |
289 | } else { | |
290 | cpu_dai->capture_active++; | |
291 | codec_dai->capture_active++; | |
292 | } | |
293 | cpu_dai->active++; | |
294 | codec_dai->active++; | |
295 | rtd->codec->active++; | |
b8c0dab9 | 296 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
297 | return 0; |
298 | ||
299 | config_err: | |
300 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
301 | rtd->dai_link->ops->shutdown(substream); | |
302 | ||
303 | machine_err: | |
304 | if (codec_dai->driver->ops->shutdown) | |
305 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
306 | ||
307 | codec_dai_err: | |
308 | if (platform->driver->ops && platform->driver->ops->close) | |
309 | platform->driver->ops->close(substream); | |
310 | ||
311 | platform_err: | |
312 | if (cpu_dai->driver->ops->shutdown) | |
313 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
314 | out: | |
b8c0dab9 | 315 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
316 | |
317 | pm_runtime_put(platform->dev); | |
318 | pm_runtime_put(codec_dai->dev); | |
319 | pm_runtime_put(cpu_dai->dev); | |
320 | ||
ddee627c LG |
321 | return ret; |
322 | } | |
323 | ||
324 | /* | |
325 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
326 | * This is to ensure there are no pops or clicks in between any music tracks | |
327 | * due to DAPM power cycling. | |
328 | */ | |
329 | static void close_delayed_work(struct work_struct *work) | |
330 | { | |
331 | struct snd_soc_pcm_runtime *rtd = | |
332 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
333 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
334 | ||
b8c0dab9 | 335 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 336 | |
103d84a3 | 337 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
338 | codec_dai->driver->playback.stream_name, |
339 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 340 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
341 | |
342 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
343 | if (rtd->pop_wait == 1) { |
344 | rtd->pop_wait = 0; | |
7bd3a6f3 | 345 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 346 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
347 | } |
348 | ||
b8c0dab9 | 349 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
350 | } |
351 | ||
352 | /* | |
353 | * Called by ALSA when a PCM substream is closed. Private data can be | |
354 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
355 | * shutdown. | |
356 | */ | |
91d5e6b4 | 357 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
358 | { |
359 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
360 | struct snd_soc_platform *platform = rtd->platform; | |
361 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
362 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
363 | struct snd_soc_codec *codec = rtd->codec; | |
364 | ||
b8c0dab9 | 365 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
366 | |
367 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
368 | cpu_dai->playback_active--; | |
369 | codec_dai->playback_active--; | |
370 | } else { | |
371 | cpu_dai->capture_active--; | |
372 | codec_dai->capture_active--; | |
373 | } | |
374 | ||
375 | cpu_dai->active--; | |
376 | codec_dai->active--; | |
377 | codec->active--; | |
378 | ||
17841020 DA |
379 | /* clear the corresponding DAIs rate when inactive */ |
380 | if (!cpu_dai->active) | |
381 | cpu_dai->rate = 0; | |
382 | ||
383 | if (!codec_dai->active) | |
384 | codec_dai->rate = 0; | |
25b76791 | 385 | |
ddee627c LG |
386 | /* Muting the DAC suppresses artifacts caused during digital |
387 | * shutdown, for example from stopping clocks. | |
388 | */ | |
da18396f | 389 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
390 | |
391 | if (cpu_dai->driver->ops->shutdown) | |
392 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
393 | ||
394 | if (codec_dai->driver->ops->shutdown) | |
395 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
396 | ||
397 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
398 | rtd->dai_link->ops->shutdown(substream); | |
399 | ||
400 | if (platform->driver->ops && platform->driver->ops->close) | |
401 | platform->driver->ops->close(substream); | |
402 | cpu_dai->runtime = NULL; | |
403 | ||
404 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 405 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 406 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
407 | /* powered down playback stream now */ |
408 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 409 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 410 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
411 | } else { |
412 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 413 | rtd->pop_wait = 1; |
d4e1a73a MB |
414 | queue_delayed_work(system_power_efficient_wq, |
415 | &rtd->delayed_work, | |
416 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 417 | } |
ddee627c LG |
418 | } else { |
419 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 420 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 421 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
422 | } |
423 | ||
b8c0dab9 | 424 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
425 | |
426 | pm_runtime_put(platform->dev); | |
427 | pm_runtime_put(codec_dai->dev); | |
428 | pm_runtime_put(cpu_dai->dev); | |
429 | ||
ddee627c LG |
430 | return 0; |
431 | } | |
432 | ||
433 | /* | |
434 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
435 | * rate, etc. This function is non atomic and can be called multiple times, | |
436 | * it can refer to the runtime info. | |
437 | */ | |
438 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
439 | { | |
440 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
441 | struct snd_soc_platform *platform = rtd->platform; | |
442 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
443 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
444 | int ret = 0; | |
445 | ||
b8c0dab9 | 446 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
447 | |
448 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
449 | ret = rtd->dai_link->ops->prepare(substream); | |
450 | if (ret < 0) { | |
103d84a3 LG |
451 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
452 | " %d\n", ret); | |
ddee627c LG |
453 | goto out; |
454 | } | |
455 | } | |
456 | ||
457 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
458 | ret = platform->driver->ops->prepare(substream); | |
459 | if (ret < 0) { | |
103d84a3 LG |
460 | dev_err(platform->dev, "ASoC: platform prepare error:" |
461 | " %d\n", ret); | |
ddee627c LG |
462 | goto out; |
463 | } | |
464 | } | |
465 | ||
466 | if (codec_dai->driver->ops->prepare) { | |
467 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); | |
468 | if (ret < 0) { | |
103d84a3 | 469 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 470 | ret); |
ddee627c LG |
471 | goto out; |
472 | } | |
473 | } | |
474 | ||
475 | if (cpu_dai->driver->ops->prepare) { | |
476 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); | |
477 | if (ret < 0) { | |
103d84a3 | 478 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 479 | ret); |
ddee627c LG |
480 | goto out; |
481 | } | |
482 | } | |
483 | ||
484 | /* cancel any delayed stream shutdown that is pending */ | |
485 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
486 | rtd->pop_wait) { |
487 | rtd->pop_wait = 0; | |
ddee627c LG |
488 | cancel_delayed_work(&rtd->delayed_work); |
489 | } | |
490 | ||
d9b0951b LG |
491 | snd_soc_dapm_stream_event(rtd, substream->stream, |
492 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 493 | |
da18396f | 494 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
495 | |
496 | out: | |
b8c0dab9 | 497 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
498 | return ret; |
499 | } | |
500 | ||
501 | /* | |
502 | * Called by ALSA when the hardware params are set by application. This | |
503 | * function can also be called multiple times and can allocate buffers | |
504 | * (using snd_pcm_lib_* ). It's non-atomic. | |
505 | */ | |
506 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
507 | struct snd_pcm_hw_params *params) | |
508 | { | |
509 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
510 | struct snd_soc_platform *platform = rtd->platform; | |
511 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
512 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
513 | int ret = 0; | |
514 | ||
b8c0dab9 | 515 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
516 | |
517 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
518 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
519 | if (ret < 0) { | |
103d84a3 LG |
520 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
521 | " failed: %d\n", ret); | |
ddee627c LG |
522 | goto out; |
523 | } | |
524 | } | |
525 | ||
526 | if (codec_dai->driver->ops->hw_params) { | |
527 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); | |
528 | if (ret < 0) { | |
103d84a3 LG |
529 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
530 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
531 | goto codec_err; |
532 | } | |
533 | } | |
534 | ||
535 | if (cpu_dai->driver->ops->hw_params) { | |
536 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); | |
537 | if (ret < 0) { | |
103d84a3 | 538 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 539 | cpu_dai->name, ret); |
ddee627c LG |
540 | goto interface_err; |
541 | } | |
542 | } | |
543 | ||
544 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
545 | ret = platform->driver->ops->hw_params(substream, params); | |
546 | if (ret < 0) { | |
103d84a3 | 547 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 548 | platform->name, ret); |
ddee627c LG |
549 | goto platform_err; |
550 | } | |
551 | } | |
552 | ||
17841020 DA |
553 | /* store the rate for each DAIs */ |
554 | cpu_dai->rate = params_rate(params); | |
555 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
556 | |
557 | out: | |
b8c0dab9 | 558 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
559 | return ret; |
560 | ||
561 | platform_err: | |
562 | if (cpu_dai->driver->ops->hw_free) | |
563 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
564 | ||
565 | interface_err: | |
566 | if (codec_dai->driver->ops->hw_free) | |
567 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
568 | ||
569 | codec_err: | |
570 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
571 | rtd->dai_link->ops->hw_free(substream); | |
572 | ||
b8c0dab9 | 573 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
574 | return ret; |
575 | } | |
576 | ||
577 | /* | |
578 | * Frees resources allocated by hw_params, can be called multiple times | |
579 | */ | |
580 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
581 | { | |
582 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
583 | struct snd_soc_platform *platform = rtd->platform; | |
584 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
585 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
586 | struct snd_soc_codec *codec = rtd->codec; | |
587 | ||
b8c0dab9 | 588 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
589 | |
590 | /* apply codec digital mute */ | |
591 | if (!codec->active) | |
da18396f | 592 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
593 | |
594 | /* free any machine hw params */ | |
595 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
596 | rtd->dai_link->ops->hw_free(substream); | |
597 | ||
598 | /* free any DMA resources */ | |
599 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
600 | platform->driver->ops->hw_free(substream); | |
601 | ||
602 | /* now free hw params for the DAIs */ | |
603 | if (codec_dai->driver->ops->hw_free) | |
604 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
605 | ||
606 | if (cpu_dai->driver->ops->hw_free) | |
607 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); | |
608 | ||
b8c0dab9 | 609 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
610 | return 0; |
611 | } | |
612 | ||
613 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
614 | { | |
615 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
616 | struct snd_soc_platform *platform = rtd->platform; | |
617 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
618 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
619 | int ret; | |
620 | ||
621 | if (codec_dai->driver->ops->trigger) { | |
622 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); | |
623 | if (ret < 0) | |
624 | return ret; | |
625 | } | |
626 | ||
627 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
628 | ret = platform->driver->ops->trigger(substream, cmd); | |
629 | if (ret < 0) | |
630 | return ret; | |
631 | } | |
632 | ||
633 | if (cpu_dai->driver->ops->trigger) { | |
634 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); | |
635 | if (ret < 0) | |
636 | return ret; | |
637 | } | |
638 | return 0; | |
639 | } | |
640 | ||
45c0a188 MB |
641 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
642 | int cmd) | |
07bf84aa LG |
643 | { |
644 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
645 | struct snd_soc_platform *platform = rtd->platform; | |
646 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
647 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
648 | int ret; | |
649 | ||
650 | if (codec_dai->driver->ops->bespoke_trigger) { | |
651 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); | |
652 | if (ret < 0) | |
653 | return ret; | |
654 | } | |
655 | ||
656 | if (platform->driver->bespoke_trigger) { | |
657 | ret = platform->driver->bespoke_trigger(substream, cmd); | |
658 | if (ret < 0) | |
659 | return ret; | |
660 | } | |
661 | ||
662 | if (cpu_dai->driver->ops->bespoke_trigger) { | |
663 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); | |
664 | if (ret < 0) | |
665 | return ret; | |
666 | } | |
667 | return 0; | |
668 | } | |
ddee627c LG |
669 | /* |
670 | * soc level wrapper for pointer callback | |
671 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
672 | * the runtime->delay will be updated accordingly. | |
673 | */ | |
674 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
675 | { | |
676 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
677 | struct snd_soc_platform *platform = rtd->platform; | |
678 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
679 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
680 | struct snd_pcm_runtime *runtime = substream->runtime; | |
681 | snd_pcm_uframes_t offset = 0; | |
682 | snd_pcm_sframes_t delay = 0; | |
683 | ||
684 | if (platform->driver->ops && platform->driver->ops->pointer) | |
685 | offset = platform->driver->ops->pointer(substream); | |
686 | ||
687 | if (cpu_dai->driver->ops->delay) | |
688 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); | |
689 | ||
690 | if (codec_dai->driver->ops->delay) | |
691 | delay += codec_dai->driver->ops->delay(substream, codec_dai); | |
692 | ||
693 | if (platform->driver->delay) | |
694 | delay += platform->driver->delay(substream, codec_dai); | |
695 | ||
696 | runtime->delay = delay; | |
697 | ||
698 | return offset; | |
699 | } | |
700 | ||
01d7584c LG |
701 | /* connect a FE and BE */ |
702 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
703 | struct snd_soc_pcm_runtime *be, int stream) | |
704 | { | |
705 | struct snd_soc_dpcm *dpcm; | |
706 | ||
707 | /* only add new dpcms */ | |
708 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
709 | if (dpcm->be == be && dpcm->fe == fe) | |
710 | return 0; | |
711 | } | |
712 | ||
713 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
714 | if (!dpcm) | |
715 | return -ENOMEM; | |
716 | ||
717 | dpcm->be = be; | |
718 | dpcm->fe = fe; | |
719 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
720 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
721 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
722 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
723 | ||
724 | dev_dbg(fe->dev, " connected new DPCM %s path %s %s %s\n", | |
725 | stream ? "capture" : "playback", fe->dai_link->name, | |
726 | stream ? "<-" : "->", be->dai_link->name); | |
727 | ||
f86dcef8 LG |
728 | #ifdef CONFIG_DEBUG_FS |
729 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
730 | fe->debugfs_dpcm_root, &dpcm->state); | |
731 | #endif | |
01d7584c LG |
732 | return 1; |
733 | } | |
734 | ||
735 | /* reparent a BE onto another FE */ | |
736 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
737 | struct snd_soc_pcm_runtime *be, int stream) | |
738 | { | |
739 | struct snd_soc_dpcm *dpcm; | |
740 | struct snd_pcm_substream *fe_substream, *be_substream; | |
741 | ||
742 | /* reparent if BE is connected to other FEs */ | |
743 | if (!be->dpcm[stream].users) | |
744 | return; | |
745 | ||
746 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
747 | ||
748 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
749 | if (dpcm->fe == fe) | |
750 | continue; | |
751 | ||
752 | dev_dbg(fe->dev, " reparent %s path %s %s %s\n", | |
753 | stream ? "capture" : "playback", | |
754 | dpcm->fe->dai_link->name, | |
755 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
756 | ||
757 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
758 | be_substream->runtime = fe_substream->runtime; | |
759 | break; | |
760 | } | |
761 | } | |
762 | ||
763 | /* disconnect a BE and FE */ | |
764 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
765 | { | |
766 | struct snd_soc_dpcm *dpcm, *d; | |
767 | ||
768 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 769 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
770 | stream ? "capture" : "playback", |
771 | dpcm->be->dai_link->name); | |
772 | ||
773 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
774 | continue; | |
775 | ||
776 | dev_dbg(fe->dev, " freed DSP %s path %s %s %s\n", | |
777 | stream ? "capture" : "playback", fe->dai_link->name, | |
778 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
779 | ||
780 | /* BEs still alive need new FE */ | |
781 | dpcm_be_reparent(fe, dpcm->be, stream); | |
782 | ||
f86dcef8 LG |
783 | #ifdef CONFIG_DEBUG_FS |
784 | debugfs_remove(dpcm->debugfs_state); | |
785 | #endif | |
01d7584c LG |
786 | list_del(&dpcm->list_be); |
787 | list_del(&dpcm->list_fe); | |
788 | kfree(dpcm); | |
789 | } | |
790 | } | |
791 | ||
792 | /* get BE for DAI widget and stream */ | |
793 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
794 | struct snd_soc_dapm_widget *widget, int stream) | |
795 | { | |
796 | struct snd_soc_pcm_runtime *be; | |
797 | int i; | |
798 | ||
799 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
800 | for (i = 0; i < card->num_links; i++) { | |
801 | be = &card->rtd[i]; | |
802 | ||
35ea0655 LG |
803 | if (!be->dai_link->no_pcm) |
804 | continue; | |
805 | ||
01d7584c LG |
806 | if (be->cpu_dai->playback_widget == widget || |
807 | be->codec_dai->playback_widget == widget) | |
808 | return be; | |
809 | } | |
810 | } else { | |
811 | ||
812 | for (i = 0; i < card->num_links; i++) { | |
813 | be = &card->rtd[i]; | |
814 | ||
35ea0655 LG |
815 | if (!be->dai_link->no_pcm) |
816 | continue; | |
817 | ||
01d7584c LG |
818 | if (be->cpu_dai->capture_widget == widget || |
819 | be->codec_dai->capture_widget == widget) | |
820 | return be; | |
821 | } | |
822 | } | |
823 | ||
103d84a3 | 824 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
825 | stream ? "capture" : "playback", widget->name); |
826 | return NULL; | |
827 | } | |
828 | ||
829 | static inline struct snd_soc_dapm_widget * | |
830 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
831 | { | |
832 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
833 | return rtd->cpu_dai->playback_widget; | |
834 | else | |
835 | return rtd->cpu_dai->capture_widget; | |
836 | } | |
837 | ||
838 | static inline struct snd_soc_dapm_widget * | |
839 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
840 | { | |
841 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
842 | return rtd->codec_dai->playback_widget; | |
843 | else | |
844 | return rtd->codec_dai->capture_widget; | |
845 | } | |
846 | ||
847 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
848 | struct snd_soc_dapm_widget *widget) | |
849 | { | |
850 | int i; | |
851 | ||
852 | for (i = 0; i < list->num_widgets; i++) { | |
853 | if (widget == list->widgets[i]) | |
854 | return 1; | |
855 | } | |
856 | ||
857 | return 0; | |
858 | } | |
859 | ||
860 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
861 | int stream, struct snd_soc_dapm_widget_list **list_) | |
862 | { | |
863 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
864 | struct snd_soc_dapm_widget_list *list; | |
865 | int paths; | |
866 | ||
867 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
868 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
869 | if (list == NULL) | |
870 | return -ENOMEM; | |
871 | ||
872 | /* get number of valid DAI paths and their widgets */ | |
873 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
874 | ||
103d84a3 | 875 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
876 | stream ? "capture" : "playback"); |
877 | ||
878 | *list_ = list; | |
879 | return paths; | |
880 | } | |
881 | ||
882 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
883 | { | |
884 | kfree(*list); | |
885 | } | |
886 | ||
887 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
888 | struct snd_soc_dapm_widget_list **list_) | |
889 | { | |
890 | struct snd_soc_dpcm *dpcm; | |
891 | struct snd_soc_dapm_widget_list *list = *list_; | |
892 | struct snd_soc_dapm_widget *widget; | |
893 | int prune = 0; | |
894 | ||
895 | /* Destroy any old FE <--> BE connections */ | |
896 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
897 | ||
898 | /* is there a valid CPU DAI widget for this BE */ | |
899 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
900 | ||
901 | /* prune the BE if it's no longer in our active list */ | |
902 | if (widget && widget_in_list(list, widget)) | |
903 | continue; | |
904 | ||
905 | /* is there a valid CODEC DAI widget for this BE */ | |
906 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
907 | ||
908 | /* prune the BE if it's no longer in our active list */ | |
909 | if (widget && widget_in_list(list, widget)) | |
910 | continue; | |
911 | ||
103d84a3 | 912 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
913 | stream ? "capture" : "playback", |
914 | dpcm->be->dai_link->name, fe->dai_link->name); | |
915 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
916 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
917 | prune++; | |
918 | } | |
919 | ||
103d84a3 | 920 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
921 | return prune; |
922 | } | |
923 | ||
924 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
925 | struct snd_soc_dapm_widget_list **list_) | |
926 | { | |
927 | struct snd_soc_card *card = fe->card; | |
928 | struct snd_soc_dapm_widget_list *list = *list_; | |
929 | struct snd_soc_pcm_runtime *be; | |
930 | int i, new = 0, err; | |
931 | ||
932 | /* Create any new FE <--> BE connections */ | |
933 | for (i = 0; i < list->num_widgets; i++) { | |
934 | ||
4616274d MB |
935 | switch (list->widgets[i]->id) { |
936 | case snd_soc_dapm_dai_in: | |
937 | case snd_soc_dapm_dai_out: | |
938 | break; | |
939 | default: | |
01d7584c | 940 | continue; |
4616274d | 941 | } |
01d7584c LG |
942 | |
943 | /* is there a valid BE rtd for this widget */ | |
944 | be = dpcm_get_be(card, list->widgets[i], stream); | |
945 | if (!be) { | |
103d84a3 | 946 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
947 | list->widgets[i]->name); |
948 | continue; | |
949 | } | |
950 | ||
951 | /* make sure BE is a real BE */ | |
952 | if (!be->dai_link->no_pcm) | |
953 | continue; | |
954 | ||
955 | /* don't connect if FE is not running */ | |
956 | if (!fe->dpcm[stream].runtime) | |
957 | continue; | |
958 | ||
959 | /* newly connected FE and BE */ | |
960 | err = dpcm_be_connect(fe, be, stream); | |
961 | if (err < 0) { | |
103d84a3 | 962 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
963 | list->widgets[i]->name); |
964 | break; | |
965 | } else if (err == 0) /* already connected */ | |
966 | continue; | |
967 | ||
968 | /* new */ | |
969 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
970 | new++; | |
971 | } | |
972 | ||
103d84a3 | 973 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
974 | return new; |
975 | } | |
976 | ||
977 | /* | |
978 | * Find the corresponding BE DAIs that source or sink audio to this | |
979 | * FE substream. | |
980 | */ | |
981 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
982 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
983 | { | |
984 | if (new) | |
985 | return dpcm_add_paths(fe, stream, list); | |
986 | else | |
987 | return dpcm_prune_paths(fe, stream, list); | |
988 | } | |
989 | ||
990 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
991 | { | |
992 | struct snd_soc_dpcm *dpcm; | |
993 | ||
994 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
995 | dpcm->be->dpcm[stream].runtime_update = | |
996 | SND_SOC_DPCM_UPDATE_NO; | |
997 | } | |
998 | ||
999 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1000 | int stream) | |
1001 | { | |
1002 | struct snd_soc_dpcm *dpcm; | |
1003 | ||
1004 | /* disable any enabled and non active backends */ | |
1005 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1006 | ||
1007 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1008 | struct snd_pcm_substream *be_substream = | |
1009 | snd_soc_dpcm_get_substream(be, stream); | |
1010 | ||
1011 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1012 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1013 | stream ? "capture" : "playback", |
1014 | be->dpcm[stream].state); | |
1015 | ||
1016 | if (--be->dpcm[stream].users != 0) | |
1017 | continue; | |
1018 | ||
1019 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1020 | continue; | |
1021 | ||
1022 | soc_pcm_close(be_substream); | |
1023 | be_substream->runtime = NULL; | |
1024 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1029 | { | |
1030 | struct snd_soc_dpcm *dpcm; | |
1031 | int err, count = 0; | |
1032 | ||
1033 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1034 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1035 | ||
1036 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1037 | struct snd_pcm_substream *be_substream = | |
1038 | snd_soc_dpcm_get_substream(be, stream); | |
1039 | ||
1040 | /* is this op for this BE ? */ | |
1041 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1042 | continue; | |
1043 | ||
1044 | /* first time the dpcm is open ? */ | |
1045 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1046 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1047 | stream ? "capture" : "playback", |
1048 | be->dpcm[stream].state); | |
1049 | ||
1050 | if (be->dpcm[stream].users++ != 0) | |
1051 | continue; | |
1052 | ||
1053 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1054 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1055 | continue; | |
1056 | ||
103d84a3 | 1057 | dev_dbg(be->dev, "ASoC: open BE %s\n", be->dai_link->name); |
01d7584c LG |
1058 | |
1059 | be_substream->runtime = be->dpcm[stream].runtime; | |
1060 | err = soc_pcm_open(be_substream); | |
1061 | if (err < 0) { | |
103d84a3 | 1062 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1063 | be->dpcm[stream].users--; |
1064 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1065 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1066 | stream ? "capture" : "playback", |
1067 | be->dpcm[stream].state); | |
1068 | ||
1069 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1070 | goto unwind; | |
1071 | } | |
1072 | ||
1073 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1074 | count++; | |
1075 | } | |
1076 | ||
1077 | return count; | |
1078 | ||
1079 | unwind: | |
1080 | /* disable any enabled and non active backends */ | |
1081 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1082 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1083 | struct snd_pcm_substream *be_substream = | |
1084 | snd_soc_dpcm_get_substream(be, stream); | |
1085 | ||
1086 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1087 | continue; | |
1088 | ||
1089 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1090 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1091 | stream ? "capture" : "playback", |
1092 | be->dpcm[stream].state); | |
1093 | ||
1094 | if (--be->dpcm[stream].users != 0) | |
1095 | continue; | |
1096 | ||
1097 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1098 | continue; | |
1099 | ||
1100 | soc_pcm_close(be_substream); | |
1101 | be_substream->runtime = NULL; | |
1102 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1103 | } | |
1104 | ||
1105 | return err; | |
1106 | } | |
1107 | ||
45c0a188 | 1108 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1109 | { |
1110 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1111 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1112 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1113 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1114 | ||
1115 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1116 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1117 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1118 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1119 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1120 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1121 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1122 | } else { | |
1123 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1124 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1125 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1126 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1127 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1128 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1133 | { | |
1134 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1135 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1136 | int stream = fe_substream->stream, ret = 0; | |
1137 | ||
1138 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1139 | ||
1140 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1141 | if (ret < 0) { | |
103d84a3 | 1142 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1143 | goto be_err; |
1144 | } | |
1145 | ||
103d84a3 | 1146 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1147 | |
1148 | /* start the DAI frontend */ | |
1149 | ret = soc_pcm_open(fe_substream); | |
1150 | if (ret < 0) { | |
103d84a3 | 1151 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1152 | goto unwind; |
1153 | } | |
1154 | ||
1155 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1156 | ||
1157 | dpcm_set_fe_runtime(fe_substream); | |
1158 | snd_pcm_limit_hw_rates(runtime); | |
1159 | ||
1160 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1161 | return 0; | |
1162 | ||
1163 | unwind: | |
1164 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1165 | be_err: | |
1166 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1167 | return ret; | |
1168 | } | |
1169 | ||
1170 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1171 | { | |
1172 | struct snd_soc_dpcm *dpcm; | |
1173 | ||
1174 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1175 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1176 | ||
1177 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1178 | struct snd_pcm_substream *be_substream = | |
1179 | snd_soc_dpcm_get_substream(be, stream); | |
1180 | ||
1181 | /* is this op for this BE ? */ | |
1182 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1183 | continue; | |
1184 | ||
1185 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1186 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1187 | stream ? "capture" : "playback", |
1188 | be->dpcm[stream].state); | |
1189 | ||
1190 | if (--be->dpcm[stream].users != 0) | |
1191 | continue; | |
1192 | ||
1193 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1194 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1195 | continue; | |
1196 | ||
103d84a3 | 1197 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1198 | dpcm->fe->dai_link->name); |
1199 | ||
1200 | soc_pcm_close(be_substream); | |
1201 | be_substream->runtime = NULL; | |
1202 | ||
1203 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1204 | } | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1209 | { | |
1210 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1211 | int stream = substream->stream; | |
1212 | ||
1213 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1214 | ||
1215 | /* shutdown the BEs */ | |
1216 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1217 | ||
103d84a3 | 1218 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1219 | |
1220 | /* now shutdown the frontend */ | |
1221 | soc_pcm_close(substream); | |
1222 | ||
1223 | /* run the stream event for each BE */ | |
1224 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1225 | ||
1226 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1227 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1232 | { | |
1233 | struct snd_soc_dpcm *dpcm; | |
1234 | ||
1235 | /* only hw_params backends that are either sinks or sources | |
1236 | * to this frontend DAI */ | |
1237 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1238 | ||
1239 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1240 | struct snd_pcm_substream *be_substream = | |
1241 | snd_soc_dpcm_get_substream(be, stream); | |
1242 | ||
1243 | /* is this op for this BE ? */ | |
1244 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1245 | continue; | |
1246 | ||
1247 | /* only free hw when no longer used - check all FEs */ | |
1248 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1249 | continue; | |
1250 | ||
1251 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1252 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1253 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1254 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1255 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1256 | continue; | |
1257 | ||
103d84a3 | 1258 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1259 | dpcm->fe->dai_link->name); |
1260 | ||
1261 | soc_pcm_hw_free(be_substream); | |
1262 | ||
1263 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1264 | } | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
45c0a188 | 1269 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1270 | { |
1271 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1272 | int err, stream = substream->stream; | |
1273 | ||
1274 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1275 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1276 | ||
103d84a3 | 1277 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1278 | |
1279 | /* call hw_free on the frontend */ | |
1280 | err = soc_pcm_hw_free(substream); | |
1281 | if (err < 0) | |
103d84a3 | 1282 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1283 | fe->dai_link->name); |
1284 | ||
1285 | /* only hw_params backends that are either sinks or sources | |
1286 | * to this frontend DAI */ | |
1287 | err = dpcm_be_dai_hw_free(fe, stream); | |
1288 | ||
1289 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1290 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1291 | ||
1292 | mutex_unlock(&fe->card->mutex); | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1297 | { | |
1298 | struct snd_soc_dpcm *dpcm; | |
1299 | int ret; | |
1300 | ||
1301 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1302 | ||
1303 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1304 | struct snd_pcm_substream *be_substream = | |
1305 | snd_soc_dpcm_get_substream(be, stream); | |
1306 | ||
1307 | /* is this op for this BE ? */ | |
1308 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1309 | continue; | |
1310 | ||
1311 | /* only allow hw_params() if no connected FEs are running */ | |
1312 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1313 | continue; | |
1314 | ||
1315 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1316 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1317 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1318 | continue; | |
1319 | ||
103d84a3 | 1320 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1321 | dpcm->fe->dai_link->name); |
1322 | ||
1323 | /* copy params for each dpcm */ | |
1324 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1325 | sizeof(struct snd_pcm_hw_params)); | |
1326 | ||
1327 | /* perform any hw_params fixups */ | |
1328 | if (be->dai_link->be_hw_params_fixup) { | |
1329 | ret = be->dai_link->be_hw_params_fixup(be, | |
1330 | &dpcm->hw_params); | |
1331 | if (ret < 0) { | |
1332 | dev_err(be->dev, | |
103d84a3 | 1333 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1334 | ret); |
1335 | goto unwind; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1340 | if (ret < 0) { | |
1341 | dev_err(dpcm->be->dev, | |
103d84a3 | 1342 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1343 | goto unwind; |
1344 | } | |
1345 | ||
1346 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1347 | } | |
1348 | return 0; | |
1349 | ||
1350 | unwind: | |
1351 | /* disable any enabled and non active backends */ | |
1352 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1353 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1354 | struct snd_pcm_substream *be_substream = | |
1355 | snd_soc_dpcm_get_substream(be, stream); | |
1356 | ||
1357 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1358 | continue; | |
1359 | ||
1360 | /* only allow hw_free() if no connected FEs are running */ | |
1361 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1362 | continue; | |
1363 | ||
1364 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1365 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1366 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1367 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1368 | continue; | |
1369 | ||
1370 | soc_pcm_hw_free(be_substream); | |
1371 | } | |
1372 | ||
1373 | return ret; | |
1374 | } | |
1375 | ||
45c0a188 MB |
1376 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1377 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1378 | { |
1379 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1380 | int ret, stream = substream->stream; | |
1381 | ||
1382 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1383 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1384 | ||
1385 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1386 | sizeof(struct snd_pcm_hw_params)); | |
1387 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1388 | if (ret < 0) { | |
103d84a3 | 1389 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1390 | goto out; |
1391 | } | |
1392 | ||
103d84a3 | 1393 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1394 | fe->dai_link->name, params_rate(params), |
1395 | params_channels(params), params_format(params)); | |
1396 | ||
1397 | /* call hw_params on the frontend */ | |
1398 | ret = soc_pcm_hw_params(substream, params); | |
1399 | if (ret < 0) { | |
103d84a3 | 1400 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1401 | dpcm_be_dai_hw_free(fe, stream); |
1402 | } else | |
1403 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1404 | ||
1405 | out: | |
1406 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1407 | mutex_unlock(&fe->card->mutex); | |
1408 | return ret; | |
1409 | } | |
1410 | ||
1411 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1412 | struct snd_pcm_substream *substream, int cmd) | |
1413 | { | |
1414 | int ret; | |
1415 | ||
103d84a3 | 1416 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1417 | dpcm->fe->dai_link->name, cmd); |
1418 | ||
1419 | ret = soc_pcm_trigger(substream, cmd); | |
1420 | if (ret < 0) | |
103d84a3 | 1421 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1422 | |
1423 | return ret; | |
1424 | } | |
1425 | ||
45c0a188 MB |
1426 | static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
1427 | int cmd) | |
01d7584c LG |
1428 | { |
1429 | struct snd_soc_dpcm *dpcm; | |
1430 | int ret = 0; | |
1431 | ||
1432 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1433 | ||
1434 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1435 | struct snd_pcm_substream *be_substream = | |
1436 | snd_soc_dpcm_get_substream(be, stream); | |
1437 | ||
1438 | /* is this op for this BE ? */ | |
1439 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1440 | continue; | |
1441 | ||
1442 | switch (cmd) { | |
1443 | case SNDRV_PCM_TRIGGER_START: | |
1444 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1445 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1446 | continue; | |
1447 | ||
1448 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1449 | if (ret) | |
1450 | return ret; | |
1451 | ||
1452 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1453 | break; | |
1454 | case SNDRV_PCM_TRIGGER_RESUME: | |
1455 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1456 | continue; | |
1457 | ||
1458 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1459 | if (ret) | |
1460 | return ret; | |
1461 | ||
1462 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1463 | break; | |
1464 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1465 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1466 | continue; | |
1467 | ||
1468 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1469 | if (ret) | |
1470 | return ret; | |
1471 | ||
1472 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1473 | break; | |
1474 | case SNDRV_PCM_TRIGGER_STOP: | |
1475 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1476 | continue; | |
1477 | ||
1478 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1479 | continue; | |
1480 | ||
1481 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1482 | if (ret) | |
1483 | return ret; | |
1484 | ||
1485 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1486 | break; | |
1487 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1488 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1489 | continue; | |
1490 | ||
1491 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1492 | continue; | |
1493 | ||
1494 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1495 | if (ret) | |
1496 | return ret; | |
1497 | ||
1498 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1499 | break; | |
1500 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1501 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1502 | continue; | |
1503 | ||
1504 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1505 | continue; | |
1506 | ||
1507 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1508 | if (ret) | |
1509 | return ret; | |
1510 | ||
1511 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1512 | break; | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | return ret; | |
1517 | } | |
1518 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1519 | ||
45c0a188 | 1520 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1521 | { |
1522 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1523 | int stream = substream->stream, ret; | |
1524 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1525 | ||
1526 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1527 | ||
1528 | switch (trigger) { | |
1529 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1530 | /* call trigger on the frontend before the backend. */ | |
1531 | ||
103d84a3 | 1532 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1533 | fe->dai_link->name, cmd); |
1534 | ||
1535 | ret = soc_pcm_trigger(substream, cmd); | |
1536 | if (ret < 0) { | |
103d84a3 | 1537 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1538 | goto out; |
1539 | } | |
1540 | ||
1541 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1542 | break; | |
1543 | case SND_SOC_DPCM_TRIGGER_POST: | |
1544 | /* call trigger on the frontend after the backend. */ | |
1545 | ||
1546 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1547 | if (ret < 0) { | |
103d84a3 | 1548 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1549 | goto out; |
1550 | } | |
1551 | ||
103d84a3 | 1552 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1553 | fe->dai_link->name, cmd); |
1554 | ||
1555 | ret = soc_pcm_trigger(substream, cmd); | |
1556 | break; | |
07bf84aa LG |
1557 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1558 | /* bespoke trigger() - handles both FE and BEs */ | |
1559 | ||
103d84a3 | 1560 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1561 | fe->dai_link->name, cmd); |
1562 | ||
1563 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1564 | if (ret < 0) { | |
103d84a3 | 1565 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1566 | goto out; |
1567 | } | |
1568 | break; | |
01d7584c | 1569 | default: |
103d84a3 | 1570 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1571 | fe->dai_link->name); |
1572 | ret = -EINVAL; | |
1573 | goto out; | |
1574 | } | |
1575 | ||
1576 | switch (cmd) { | |
1577 | case SNDRV_PCM_TRIGGER_START: | |
1578 | case SNDRV_PCM_TRIGGER_RESUME: | |
1579 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1580 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1581 | break; | |
1582 | case SNDRV_PCM_TRIGGER_STOP: | |
1583 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1584 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1585 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1586 | break; | |
1587 | } | |
1588 | ||
1589 | out: | |
1590 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1591 | return ret; | |
1592 | } | |
1593 | ||
1594 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1595 | { | |
1596 | struct snd_soc_dpcm *dpcm; | |
1597 | int ret = 0; | |
1598 | ||
1599 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1600 | ||
1601 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1602 | struct snd_pcm_substream *be_substream = | |
1603 | snd_soc_dpcm_get_substream(be, stream); | |
1604 | ||
1605 | /* is this op for this BE ? */ | |
1606 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1607 | continue; | |
1608 | ||
1609 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1610 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1611 | continue; | |
1612 | ||
103d84a3 | 1613 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1614 | dpcm->fe->dai_link->name); |
1615 | ||
1616 | ret = soc_pcm_prepare(be_substream); | |
1617 | if (ret < 0) { | |
103d84a3 | 1618 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1619 | ret); |
1620 | break; | |
1621 | } | |
1622 | ||
1623 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1624 | } | |
1625 | return ret; | |
1626 | } | |
1627 | ||
45c0a188 | 1628 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1629 | { |
1630 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1631 | int stream = substream->stream, ret = 0; | |
1632 | ||
1633 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1634 | ||
103d84a3 | 1635 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1636 | |
1637 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1638 | ||
1639 | /* there is no point preparing this FE if there are no BEs */ | |
1640 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1641 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1642 | fe->dai_link->name); |
1643 | ret = -EINVAL; | |
1644 | goto out; | |
1645 | } | |
1646 | ||
1647 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1648 | if (ret < 0) | |
1649 | goto out; | |
1650 | ||
1651 | /* call prepare on the frontend */ | |
1652 | ret = soc_pcm_prepare(substream); | |
1653 | if (ret < 0) { | |
103d84a3 | 1654 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1655 | fe->dai_link->name); |
1656 | goto out; | |
1657 | } | |
1658 | ||
1659 | /* run the stream event for each BE */ | |
1660 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1661 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1662 | ||
1663 | out: | |
1664 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1665 | mutex_unlock(&fe->card->mutex); | |
1666 | ||
1667 | return ret; | |
1668 | } | |
1669 | ||
be3f3f2c LG |
1670 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1671 | unsigned int cmd, void *arg) | |
1672 | { | |
1673 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1674 | struct snd_soc_platform *platform = rtd->platform; | |
1675 | ||
1676 | if (platform->driver->ops->ioctl) | |
1677 | return platform->driver->ops->ioctl(substream, cmd, arg); | |
1678 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1679 | } | |
1680 | ||
618dae11 LG |
1681 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1682 | { | |
07bf84aa LG |
1683 | struct snd_pcm_substream *substream = |
1684 | snd_soc_dpcm_get_substream(fe, stream); | |
1685 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1686 | int err; |
1687 | ||
103d84a3 | 1688 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1689 | stream ? "capture" : "playback", fe->dai_link->name); |
1690 | ||
07bf84aa LG |
1691 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1692 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1693 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1694 | fe->dai_link->name); |
1695 | ||
1696 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1697 | if (err < 0) | |
103d84a3 | 1698 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1699 | } else { |
103d84a3 | 1700 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1701 | fe->dai_link->name); |
1702 | ||
1703 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1704 | if (err < 0) | |
103d84a3 | 1705 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1706 | } |
618dae11 LG |
1707 | |
1708 | err = dpcm_be_dai_hw_free(fe, stream); | |
1709 | if (err < 0) | |
103d84a3 | 1710 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1711 | |
1712 | err = dpcm_be_dai_shutdown(fe, stream); | |
1713 | if (err < 0) | |
103d84a3 | 1714 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1715 | |
1716 | /* run the stream event for each BE */ | |
1717 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1718 | ||
1719 | return 0; | |
1720 | } | |
1721 | ||
1722 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1723 | { | |
07bf84aa LG |
1724 | struct snd_pcm_substream *substream = |
1725 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1726 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1727 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1728 | int ret; |
1729 | ||
103d84a3 | 1730 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1731 | stream ? "capture" : "playback", fe->dai_link->name); |
1732 | ||
1733 | /* Only start the BE if the FE is ready */ | |
1734 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1735 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1736 | return -EINVAL; | |
1737 | ||
1738 | /* startup must always be called for new BEs */ | |
1739 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1740 | if (ret < 0) |
618dae11 | 1741 | goto disconnect; |
618dae11 LG |
1742 | |
1743 | /* keep going if FE state is > open */ | |
1744 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1745 | return 0; | |
01d7584c | 1746 | |
618dae11 | 1747 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1748 | if (ret < 0) |
618dae11 | 1749 | goto close; |
618dae11 LG |
1750 | |
1751 | /* keep going if FE state is > hw_params */ | |
1752 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1753 | return 0; | |
1754 | ||
1755 | ||
1756 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1757 | if (ret < 0) |
618dae11 | 1758 | goto hw_free; |
618dae11 LG |
1759 | |
1760 | /* run the stream event for each BE */ | |
1761 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1762 | ||
1763 | /* keep going if FE state is > prepare */ | |
1764 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1765 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1766 | return 0; | |
1767 | ||
07bf84aa LG |
1768 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1769 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1770 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1771 | fe->dai_link->name); |
618dae11 | 1772 | |
07bf84aa LG |
1773 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1774 | if (ret < 0) { | |
103d84a3 | 1775 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1776 | goto hw_free; |
1777 | } | |
1778 | } else { | |
103d84a3 | 1779 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1780 | fe->dai_link->name); |
1781 | ||
1782 | ret = dpcm_be_dai_trigger(fe, stream, | |
1783 | SNDRV_PCM_TRIGGER_START); | |
1784 | if (ret < 0) { | |
103d84a3 | 1785 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1786 | goto hw_free; |
1787 | } | |
618dae11 LG |
1788 | } |
1789 | ||
1790 | return 0; | |
1791 | ||
1792 | hw_free: | |
1793 | dpcm_be_dai_hw_free(fe, stream); | |
1794 | close: | |
1795 | dpcm_be_dai_shutdown(fe, stream); | |
1796 | disconnect: | |
1797 | /* disconnect any non started BEs */ | |
1798 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1799 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1800 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1801 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1802 | } | |
1803 | ||
1804 | return ret; | |
1805 | } | |
1806 | ||
1807 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1808 | { | |
1809 | int ret; | |
1810 | ||
1811 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1812 | ret = dpcm_run_update_startup(fe, stream); | |
1813 | if (ret < 0) | |
103d84a3 | 1814 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1815 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1816 | ||
1817 | return ret; | |
1818 | } | |
1819 | ||
1820 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1821 | { | |
1822 | int ret; | |
1823 | ||
1824 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1825 | ret = dpcm_run_update_shutdown(fe, stream); | |
1826 | if (ret < 0) | |
103d84a3 | 1827 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1828 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1829 | ||
1830 | return ret; | |
1831 | } | |
1832 | ||
1833 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1834 | * any DAI links. | |
1835 | */ | |
c3f48ae6 | 1836 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 1837 | { |
618dae11 LG |
1838 | int i, old, new, paths; |
1839 | ||
618dae11 LG |
1840 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
1841 | for (i = 0; i < card->num_rtd; i++) { | |
1842 | struct snd_soc_dapm_widget_list *list; | |
1843 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1844 | ||
1845 | /* make sure link is FE */ | |
1846 | if (!fe->dai_link->dynamic) | |
1847 | continue; | |
1848 | ||
1849 | /* only check active links */ | |
1850 | if (!fe->cpu_dai->active) | |
1851 | continue; | |
1852 | ||
1853 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1854 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1855 | fe->dai_link->name); |
1856 | ||
1857 | /* skip if FE doesn't have playback capability */ | |
1858 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1859 | goto capture; | |
1860 | ||
1861 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1862 | if (paths < 0) { | |
103d84a3 | 1863 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1864 | fe->dai_link->name, "playback"); |
1865 | mutex_unlock(&card->mutex); | |
1866 | return paths; | |
1867 | } | |
1868 | ||
1869 | /* update any new playback paths */ | |
1870 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1871 | if (new) { | |
1872 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1873 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1874 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1875 | } | |
1876 | ||
1877 | /* update any old playback paths */ | |
1878 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1879 | if (old) { | |
1880 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1881 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1882 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1883 | } | |
1884 | ||
1885 | capture: | |
1886 | /* skip if FE doesn't have capture capability */ | |
1887 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1888 | continue; | |
1889 | ||
1890 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1891 | if (paths < 0) { | |
103d84a3 | 1892 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1893 | fe->dai_link->name, "capture"); |
1894 | mutex_unlock(&card->mutex); | |
1895 | return paths; | |
1896 | } | |
1897 | ||
1898 | /* update any new capture paths */ | |
1899 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1900 | if (new) { | |
1901 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1902 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1903 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1904 | } | |
1905 | ||
1906 | /* update any old capture paths */ | |
1907 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1908 | if (old) { | |
1909 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1910 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1911 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1912 | } | |
1913 | ||
1914 | dpcm_path_put(&list); | |
1915 | } | |
1916 | ||
1917 | mutex_unlock(&card->mutex); | |
1918 | return 0; | |
1919 | } | |
01d7584c LG |
1920 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1921 | { | |
1922 | struct snd_soc_dpcm *dpcm; | |
1923 | struct list_head *clients = | |
1924 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1925 | ||
1926 | list_for_each_entry(dpcm, clients, list_be) { | |
1927 | ||
1928 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1929 | struct snd_soc_dai *dai = be->codec_dai; | |
1930 | struct snd_soc_dai_driver *drv = dai->driver; | |
1931 | ||
1932 | if (be->dai_link->ignore_suspend) | |
1933 | continue; | |
1934 | ||
103d84a3 | 1935 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c LG |
1936 | |
1937 | if (drv->ops->digital_mute && dai->playback_active) | |
1938 | drv->ops->digital_mute(dai, mute); | |
1939 | } | |
1940 | ||
1941 | return 0; | |
1942 | } | |
1943 | ||
45c0a188 | 1944 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1945 | { |
1946 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1947 | struct snd_soc_dpcm *dpcm; | |
1948 | struct snd_soc_dapm_widget_list *list; | |
1949 | int ret; | |
1950 | int stream = fe_substream->stream; | |
1951 | ||
1952 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1953 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1954 | ||
1955 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
103d84a3 | 1956 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 1957 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
1958 | } |
1959 | ||
1960 | /* calculate valid and active FE <-> BE dpcms */ | |
1961 | dpcm_process_paths(fe, stream, &list, 1); | |
1962 | ||
1963 | ret = dpcm_fe_dai_startup(fe_substream); | |
1964 | if (ret < 0) { | |
1965 | /* clean up all links */ | |
1966 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1967 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1968 | ||
1969 | dpcm_be_disconnect(fe, stream); | |
1970 | fe->dpcm[stream].runtime = NULL; | |
1971 | } | |
1972 | ||
1973 | dpcm_clear_pending_state(fe, stream); | |
1974 | dpcm_path_put(&list); | |
1975 | mutex_unlock(&fe->card->mutex); | |
1976 | return ret; | |
1977 | } | |
1978 | ||
45c0a188 | 1979 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1980 | { |
1981 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1982 | struct snd_soc_dpcm *dpcm; | |
1983 | int stream = fe_substream->stream, ret; | |
1984 | ||
1985 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1986 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
1987 | ||
1988 | /* mark FE's links ready to prune */ | |
1989 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1990 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1991 | ||
1992 | dpcm_be_disconnect(fe, stream); | |
1993 | ||
1994 | fe->dpcm[stream].runtime = NULL; | |
1995 | mutex_unlock(&fe->card->mutex); | |
1996 | return ret; | |
1997 | } | |
1998 | ||
ddee627c LG |
1999 | /* create a new pcm */ |
2000 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2001 | { | |
ddee627c LG |
2002 | struct snd_soc_platform *platform = rtd->platform; |
2003 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2004 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2005 | struct snd_pcm *pcm; | |
2006 | char new_name[64]; | |
2007 | int ret = 0, playback = 0, capture = 0; | |
2008 | ||
01d7584c LG |
2009 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
2010 | if (cpu_dai->driver->playback.channels_min) | |
2011 | playback = 1; | |
2012 | if (cpu_dai->driver->capture.channels_min) | |
2013 | capture = 1; | |
2014 | } else { | |
05679092 MB |
2015 | if (codec_dai->driver->playback.channels_min && |
2016 | cpu_dai->driver->playback.channels_min) | |
01d7584c | 2017 | playback = 1; |
05679092 MB |
2018 | if (codec_dai->driver->capture.channels_min && |
2019 | cpu_dai->driver->capture.channels_min) | |
01d7584c LG |
2020 | capture = 1; |
2021 | } | |
2022 | ||
d6bead02 FE |
2023 | if (rtd->dai_link->playback_only) { |
2024 | playback = 1; | |
2025 | capture = 0; | |
2026 | } | |
2027 | ||
2028 | if (rtd->dai_link->capture_only) { | |
2029 | playback = 0; | |
2030 | capture = 1; | |
2031 | } | |
2032 | ||
01d7584c LG |
2033 | /* create the PCM */ |
2034 | if (rtd->dai_link->no_pcm) { | |
2035 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2036 | rtd->dai_link->stream_name); | |
2037 | ||
2038 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2039 | playback, capture, &pcm); | |
2040 | } else { | |
2041 | if (rtd->dai_link->dynamic) | |
2042 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2043 | rtd->dai_link->stream_name); | |
2044 | else | |
2045 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2046 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2047 | ||
2048 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2049 | capture, &pcm); | |
2050 | } | |
ddee627c | 2051 | if (ret < 0) { |
103d84a3 | 2052 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2053 | rtd->dai_link->name); |
ddee627c LG |
2054 | return ret; |
2055 | } | |
103d84a3 | 2056 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2057 | |
2058 | /* DAPM dai link stream work */ | |
2059 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2060 | ||
2061 | rtd->pcm = pcm; | |
2062 | pcm->private_data = rtd; | |
01d7584c LG |
2063 | |
2064 | if (rtd->dai_link->no_pcm) { | |
2065 | if (playback) | |
2066 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2067 | if (capture) | |
2068 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2069 | goto out; | |
2070 | } | |
2071 | ||
2072 | /* ASoC PCM operations */ | |
2073 | if (rtd->dai_link->dynamic) { | |
2074 | rtd->ops.open = dpcm_fe_dai_open; | |
2075 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2076 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2077 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2078 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2079 | rtd->ops.close = dpcm_fe_dai_close; | |
2080 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2081 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2082 | } else { |
2083 | rtd->ops.open = soc_pcm_open; | |
2084 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2085 | rtd->ops.prepare = soc_pcm_prepare; | |
2086 | rtd->ops.trigger = soc_pcm_trigger; | |
2087 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2088 | rtd->ops.close = soc_pcm_close; | |
2089 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2090 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2091 | } |
2092 | ||
ddee627c | 2093 | if (platform->driver->ops) { |
01d7584c LG |
2094 | rtd->ops.ack = platform->driver->ops->ack; |
2095 | rtd->ops.copy = platform->driver->ops->copy; | |
2096 | rtd->ops.silence = platform->driver->ops->silence; | |
2097 | rtd->ops.page = platform->driver->ops->page; | |
2098 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2099 | } |
2100 | ||
2101 | if (playback) | |
01d7584c | 2102 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2103 | |
2104 | if (capture) | |
01d7584c | 2105 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2106 | |
2107 | if (platform->driver->pcm_new) { | |
2108 | ret = platform->driver->pcm_new(rtd); | |
2109 | if (ret < 0) { | |
b1bc7b3c MB |
2110 | dev_err(platform->dev, |
2111 | "ASoC: pcm constructor failed: %d\n", | |
2112 | ret); | |
ddee627c LG |
2113 | return ret; |
2114 | } | |
2115 | } | |
2116 | ||
2117 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2118 | out: |
5cb9b748 | 2119 | dev_info(rtd->card->dev, " %s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2120 | cpu_dai->name); |
2121 | return ret; | |
2122 | } | |
01d7584c LG |
2123 | |
2124 | /* is the current PCM operation for this FE ? */ | |
2125 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2126 | { | |
2127 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2128 | return 1; | |
2129 | return 0; | |
2130 | } | |
2131 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2132 | ||
2133 | /* is the current PCM operation for this BE ? */ | |
2134 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2135 | struct snd_soc_pcm_runtime *be, int stream) | |
2136 | { | |
2137 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2138 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2139 | be->dpcm[stream].runtime_update)) | |
2140 | return 1; | |
2141 | return 0; | |
2142 | } | |
2143 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2144 | ||
2145 | /* get the substream for this BE */ | |
2146 | struct snd_pcm_substream * | |
2147 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2148 | { | |
2149 | return be->pcm->streams[stream].substream; | |
2150 | } | |
2151 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2152 | ||
2153 | /* get the BE runtime state */ | |
2154 | enum snd_soc_dpcm_state | |
2155 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2156 | { | |
2157 | return be->dpcm[stream].state; | |
2158 | } | |
2159 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2160 | ||
2161 | /* set the BE runtime state */ | |
2162 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2163 | int stream, enum snd_soc_dpcm_state state) | |
2164 | { | |
2165 | be->dpcm[stream].state = state; | |
2166 | } | |
2167 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2168 | ||
2169 | /* | |
2170 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2171 | * are not running, paused or suspended for the specified stream direction. | |
2172 | */ | |
2173 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2174 | struct snd_soc_pcm_runtime *be, int stream) | |
2175 | { | |
2176 | struct snd_soc_dpcm *dpcm; | |
2177 | int state; | |
2178 | ||
2179 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2180 | ||
2181 | if (dpcm->fe == fe) | |
2182 | continue; | |
2183 | ||
2184 | state = dpcm->fe->dpcm[stream].state; | |
2185 | if (state == SND_SOC_DPCM_STATE_START || | |
2186 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2187 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2188 | return 0; | |
2189 | } | |
2190 | ||
2191 | /* it's safe to free/stop this BE DAI */ | |
2192 | return 1; | |
2193 | } | |
2194 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2195 | ||
2196 | /* | |
2197 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2198 | * running, paused or suspended for the specified stream direction. | |
2199 | */ | |
2200 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2201 | struct snd_soc_pcm_runtime *be, int stream) | |
2202 | { | |
2203 | struct snd_soc_dpcm *dpcm; | |
2204 | int state; | |
2205 | ||
2206 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2207 | ||
2208 | if (dpcm->fe == fe) | |
2209 | continue; | |
2210 | ||
2211 | state = dpcm->fe->dpcm[stream].state; | |
2212 | if (state == SND_SOC_DPCM_STATE_START || | |
2213 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2214 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2215 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2216 | return 0; | |
2217 | } | |
2218 | ||
2219 | /* it's safe to change hw_params */ | |
2220 | return 1; | |
2221 | } | |
2222 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2223 | |
07bf84aa LG |
2224 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2225 | int cmd, struct snd_soc_platform *platform) | |
2226 | { | |
2227 | if (platform->driver->ops->trigger) | |
2228 | return platform->driver->ops->trigger(substream, cmd); | |
2229 | return 0; | |
2230 | } | |
2231 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2232 | ||
f86dcef8 LG |
2233 | #ifdef CONFIG_DEBUG_FS |
2234 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2235 | { | |
2236 | switch (state) { | |
2237 | case SND_SOC_DPCM_STATE_NEW: | |
2238 | return "new"; | |
2239 | case SND_SOC_DPCM_STATE_OPEN: | |
2240 | return "open"; | |
2241 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2242 | return "hw_params"; | |
2243 | case SND_SOC_DPCM_STATE_PREPARE: | |
2244 | return "prepare"; | |
2245 | case SND_SOC_DPCM_STATE_START: | |
2246 | return "start"; | |
2247 | case SND_SOC_DPCM_STATE_STOP: | |
2248 | return "stop"; | |
2249 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2250 | return "suspend"; | |
2251 | case SND_SOC_DPCM_STATE_PAUSED: | |
2252 | return "paused"; | |
2253 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2254 | return "hw_free"; | |
2255 | case SND_SOC_DPCM_STATE_CLOSE: | |
2256 | return "close"; | |
2257 | } | |
2258 | ||
2259 | return "unknown"; | |
2260 | } | |
2261 | ||
f86dcef8 LG |
2262 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2263 | int stream, char *buf, size_t size) | |
2264 | { | |
2265 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2266 | struct snd_soc_dpcm *dpcm; | |
2267 | ssize_t offset = 0; | |
2268 | ||
2269 | /* FE state */ | |
2270 | offset += snprintf(buf + offset, size - offset, | |
2271 | "[%s - %s]\n", fe->dai_link->name, | |
2272 | stream ? "Capture" : "Playback"); | |
2273 | ||
2274 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2275 | dpcm_state_string(fe->dpcm[stream].state)); | |
2276 | ||
2277 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2278 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2279 | offset += snprintf(buf + offset, size - offset, | |
2280 | "Hardware Params: " | |
2281 | "Format = %s, Channels = %d, Rate = %d\n", | |
2282 | snd_pcm_format_name(params_format(params)), | |
2283 | params_channels(params), | |
2284 | params_rate(params)); | |
2285 | ||
2286 | /* BEs state */ | |
2287 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2288 | ||
2289 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2290 | offset += snprintf(buf + offset, size - offset, | |
2291 | " No active DSP links\n"); | |
2292 | goto out; | |
2293 | } | |
2294 | ||
2295 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2296 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2297 | params = &dpcm->hw_params; | |
2298 | ||
2299 | offset += snprintf(buf + offset, size - offset, | |
2300 | "- %s\n", be->dai_link->name); | |
2301 | ||
2302 | offset += snprintf(buf + offset, size - offset, | |
2303 | " State: %s\n", | |
2304 | dpcm_state_string(be->dpcm[stream].state)); | |
2305 | ||
2306 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2307 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2308 | offset += snprintf(buf + offset, size - offset, | |
2309 | " Hardware Params: " | |
2310 | "Format = %s, Channels = %d, Rate = %d\n", | |
2311 | snd_pcm_format_name(params_format(params)), | |
2312 | params_channels(params), | |
2313 | params_rate(params)); | |
2314 | } | |
2315 | ||
2316 | out: | |
2317 | return offset; | |
2318 | } | |
2319 | ||
2320 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2321 | size_t count, loff_t *ppos) | |
2322 | { | |
2323 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2324 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2325 | char *buf; | |
2326 | ||
2327 | buf = kmalloc(out_count, GFP_KERNEL); | |
2328 | if (!buf) | |
2329 | return -ENOMEM; | |
2330 | ||
2331 | if (fe->cpu_dai->driver->playback.channels_min) | |
2332 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2333 | buf + offset, out_count - offset); | |
2334 | ||
2335 | if (fe->cpu_dai->driver->capture.channels_min) | |
2336 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2337 | buf + offset, out_count - offset); | |
2338 | ||
f57b8488 | 2339 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2340 | |
f57b8488 LG |
2341 | kfree(buf); |
2342 | return ret; | |
f86dcef8 LG |
2343 | } |
2344 | ||
2345 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2346 | .open = simple_open, |
f86dcef8 LG |
2347 | .read = dpcm_state_read_file, |
2348 | .llseek = default_llseek, | |
2349 | }; | |
2350 | ||
2351 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2352 | { | |
b3bba9a1 MB |
2353 | if (!rtd->dai_link) |
2354 | return 0; | |
2355 | ||
f86dcef8 LG |
2356 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2357 | rtd->card->debugfs_card_root); | |
2358 | if (!rtd->debugfs_dpcm_root) { | |
2359 | dev_dbg(rtd->dev, | |
2360 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2361 | rtd->dai_link->name); | |
2362 | return -EINVAL; | |
2363 | } | |
2364 | ||
f57b8488 | 2365 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2366 | rtd->debugfs_dpcm_root, |
2367 | rtd, &dpcm_state_fops); | |
2368 | ||
2369 | return 0; | |
2370 | } | |
2371 | #endif |