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> | |
988e8cc4 | 22 | #include <linux/pinctrl/consumer.h> |
d6652ef8 | 23 | #include <linux/pm_runtime.h> |
ddee627c LG |
24 | #include <linux/slab.h> |
25 | #include <linux/workqueue.h> | |
01d7584c | 26 | #include <linux/export.h> |
f86dcef8 | 27 | #include <linux/debugfs.h> |
ddee627c LG |
28 | #include <sound/core.h> |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/soc.h> | |
01d7584c | 32 | #include <sound/soc-dpcm.h> |
ddee627c LG |
33 | #include <sound/initval.h> |
34 | ||
01d7584c LG |
35 | #define DPCM_MAX_BE_USERS 8 |
36 | ||
90996f43 LPC |
37 | /** |
38 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
39 | * @substream: the pcm substream | |
40 | * @hw: the hardware parameters | |
41 | * | |
42 | * Sets the substream runtime hardware parameters. | |
43 | */ | |
44 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
45 | const struct snd_pcm_hardware *hw) | |
46 | { | |
47 | struct snd_pcm_runtime *runtime = substream->runtime; | |
48 | runtime->hw.info = hw->info; | |
49 | runtime->hw.formats = hw->formats; | |
50 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
51 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
52 | runtime->hw.periods_min = hw->periods_min; | |
53 | runtime->hw.periods_max = hw->periods_max; | |
54 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
55 | runtime->hw.fifo_size = hw->fifo_size; | |
56 | return 0; | |
57 | } | |
58 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
59 | ||
01d7584c LG |
60 | /* DPCM stream event, send event to FE and all active BEs. */ |
61 | static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, | |
62 | int event) | |
63 | { | |
64 | struct snd_soc_dpcm *dpcm; | |
65 | ||
66 | list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) { | |
67 | ||
68 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
69 | ||
103d84a3 | 70 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
71 | be->dai_link->name, event, dir); |
72 | ||
73 | snd_soc_dapm_stream_event(be, dir, event); | |
74 | } | |
75 | ||
76 | snd_soc_dapm_stream_event(fe, dir, event); | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
17841020 DA |
81 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
82 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
83 | { |
84 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
85 | int ret; |
86 | ||
17841020 | 87 | if (!soc_dai->driver->symmetric_rates && |
ddee627c LG |
88 | !rtd->dai_link->symmetric_rates) |
89 | return 0; | |
90 | ||
91 | /* This can happen if multiple streams are starting simultaneously - | |
92 | * the second can need to get its constraints before the first has | |
93 | * picked a rate. Complain and allow the application to carry on. | |
94 | */ | |
17841020 DA |
95 | if (!soc_dai->rate) { |
96 | dev_warn(soc_dai->dev, | |
103d84a3 | 97 | "ASoC: Not enforcing symmetric_rates due to race\n"); |
ddee627c LG |
98 | return 0; |
99 | } | |
100 | ||
103d84a3 | 101 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", soc_dai->rate); |
ddee627c LG |
102 | |
103 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
104 | SNDRV_PCM_HW_PARAM_RATE, | |
17841020 | 105 | soc_dai->rate, soc_dai->rate); |
ddee627c | 106 | if (ret < 0) { |
17841020 | 107 | dev_err(soc_dai->dev, |
103d84a3 LG |
108 | "ASoC: Unable to apply rate symmetry constraint: %d\n", |
109 | ret); | |
ddee627c LG |
110 | return ret; |
111 | } | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
58ba9b25 MB |
116 | /* |
117 | * List of sample sizes that might go over the bus for parameter | |
118 | * application. There ought to be a wildcard sample size for things | |
119 | * like the DAC/ADC resolution to use but there isn't right now. | |
120 | */ | |
121 | static int sample_sizes[] = { | |
88e33954 | 122 | 24, 32, |
58ba9b25 MB |
123 | }; |
124 | ||
125 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
126 | struct snd_soc_dai *dai) | |
127 | { | |
128 | int ret, i, bits; | |
129 | ||
130 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
131 | bits = dai->driver->playback.sig_bits; | |
132 | else | |
133 | bits = dai->driver->capture.sig_bits; | |
134 | ||
135 | if (!bits) | |
136 | return; | |
137 | ||
138 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
139 | if (bits >= sample_sizes[i]) |
140 | continue; | |
141 | ||
142 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
143 | sample_sizes[i], bits); | |
58ba9b25 MB |
144 | if (ret != 0) |
145 | dev_warn(dai->dev, | |
103d84a3 | 146 | "ASoC: Failed to set MSB %d/%d: %d\n", |
58ba9b25 MB |
147 | bits, sample_sizes[i], ret); |
148 | } | |
149 | } | |
150 | ||
bd477c31 LPC |
151 | static void soc_pcm_init_runtime_hw(struct snd_pcm_hardware *hw, |
152 | struct snd_soc_pcm_stream *codec_stream, | |
153 | struct snd_soc_pcm_stream *cpu_stream) | |
154 | { | |
155 | hw->rate_min = max(codec_stream->rate_min, cpu_stream->rate_min); | |
156 | hw->rate_max = max(codec_stream->rate_max, cpu_stream->rate_max); | |
157 | hw->channels_min = max(codec_stream->channels_min, | |
158 | cpu_stream->channels_min); | |
159 | hw->channels_max = min(codec_stream->channels_max, | |
160 | cpu_stream->channels_max); | |
161 | hw->formats = codec_stream->formats & cpu_stream->formats; | |
162 | hw->rates = codec_stream->rates & cpu_stream->rates; | |
163 | if (codec_stream->rates | |
164 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
165 | hw->rates |= cpu_stream->rates; | |
166 | if (cpu_stream->rates | |
167 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
168 | hw->rates |= codec_stream->rates; | |
169 | } | |
170 | ||
ddee627c LG |
171 | /* |
172 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
173 | * then initialized and any private data can be allocated. This also calls | |
174 | * startup for the cpu DAI, platform, machine and codec DAI. | |
175 | */ | |
176 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
177 | { | |
178 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
179 | struct snd_pcm_runtime *runtime = substream->runtime; | |
180 | struct snd_soc_platform *platform = rtd->platform; | |
181 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
182 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
183 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
184 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
185 | int ret = 0; | |
186 | ||
988e8cc4 NC |
187 | pinctrl_pm_select_default_state(cpu_dai->dev); |
188 | pinctrl_pm_select_default_state(codec_dai->dev); | |
d6652ef8 MB |
189 | pm_runtime_get_sync(cpu_dai->dev); |
190 | pm_runtime_get_sync(codec_dai->dev); | |
191 | pm_runtime_get_sync(platform->dev); | |
192 | ||
b8c0dab9 | 193 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
194 | |
195 | /* startup the audio subsystem */ | |
c5914b0a | 196 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) { |
ddee627c LG |
197 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
198 | if (ret < 0) { | |
103d84a3 LG |
199 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
200 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
201 | goto out; |
202 | } | |
203 | } | |
204 | ||
205 | if (platform->driver->ops && platform->driver->ops->open) { | |
206 | ret = platform->driver->ops->open(substream); | |
207 | if (ret < 0) { | |
103d84a3 LG |
208 | dev_err(platform->dev, "ASoC: can't open platform" |
209 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
210 | goto platform_err; |
211 | } | |
212 | } | |
213 | ||
c5914b0a | 214 | if (codec_dai->driver->ops && codec_dai->driver->ops->startup) { |
ddee627c LG |
215 | ret = codec_dai->driver->ops->startup(substream, codec_dai); |
216 | if (ret < 0) { | |
103d84a3 LG |
217 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
218 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
219 | goto codec_dai_err; |
220 | } | |
221 | } | |
222 | ||
223 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
224 | ret = rtd->dai_link->ops->startup(substream); | |
225 | if (ret < 0) { | |
103d84a3 | 226 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 227 | rtd->dai_link->name, ret); |
ddee627c LG |
228 | goto machine_err; |
229 | } | |
230 | } | |
231 | ||
01d7584c LG |
232 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
233 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
234 | goto dynamic; | |
235 | ||
ddee627c LG |
236 | /* Check that the codec and cpu DAIs are compatible */ |
237 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
bd477c31 LPC |
238 | soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->playback, |
239 | &cpu_dai_drv->playback); | |
ddee627c | 240 | } else { |
bd477c31 LPC |
241 | soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->capture, |
242 | &cpu_dai_drv->capture); | |
ddee627c LG |
243 | } |
244 | ||
245 | ret = -EINVAL; | |
246 | snd_pcm_limit_hw_rates(runtime); | |
247 | if (!runtime->hw.rates) { | |
103d84a3 | 248 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
249 | codec_dai->name, cpu_dai->name); |
250 | goto config_err; | |
251 | } | |
252 | if (!runtime->hw.formats) { | |
103d84a3 | 253 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
254 | codec_dai->name, cpu_dai->name); |
255 | goto config_err; | |
256 | } | |
257 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
258 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 259 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
260 | codec_dai->name, cpu_dai->name); |
261 | goto config_err; | |
262 | } | |
263 | ||
58ba9b25 MB |
264 | soc_pcm_apply_msb(substream, codec_dai); |
265 | soc_pcm_apply_msb(substream, cpu_dai); | |
266 | ||
ddee627c | 267 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
268 | if (cpu_dai->active) { |
269 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
270 | if (ret != 0) | |
271 | goto config_err; | |
272 | } | |
273 | ||
274 | if (codec_dai->active) { | |
275 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
276 | if (ret != 0) |
277 | goto config_err; | |
278 | } | |
279 | ||
103d84a3 | 280 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 281 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
282 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
283 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 284 | runtime->hw.channels_max); |
103d84a3 | 285 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
286 | runtime->hw.rate_max); |
287 | ||
01d7584c | 288 | dynamic: |
ddee627c LG |
289 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
290 | cpu_dai->playback_active++; | |
291 | codec_dai->playback_active++; | |
292 | } else { | |
293 | cpu_dai->capture_active++; | |
294 | codec_dai->capture_active++; | |
295 | } | |
296 | cpu_dai->active++; | |
297 | codec_dai->active++; | |
298 | rtd->codec->active++; | |
b8c0dab9 | 299 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
300 | return 0; |
301 | ||
302 | config_err: | |
303 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
304 | rtd->dai_link->ops->shutdown(substream); | |
305 | ||
306 | machine_err: | |
307 | if (codec_dai->driver->ops->shutdown) | |
308 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
309 | ||
310 | codec_dai_err: | |
311 | if (platform->driver->ops && platform->driver->ops->close) | |
312 | platform->driver->ops->close(substream); | |
313 | ||
314 | platform_err: | |
315 | if (cpu_dai->driver->ops->shutdown) | |
316 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
317 | out: | |
b8c0dab9 | 318 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
319 | |
320 | pm_runtime_put(platform->dev); | |
321 | pm_runtime_put(codec_dai->dev); | |
322 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
323 | if (!codec_dai->active) |
324 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
325 | if (!cpu_dai->active) | |
326 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 327 | |
ddee627c LG |
328 | return ret; |
329 | } | |
330 | ||
331 | /* | |
332 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
333 | * This is to ensure there are no pops or clicks in between any music tracks | |
334 | * due to DAPM power cycling. | |
335 | */ | |
336 | static void close_delayed_work(struct work_struct *work) | |
337 | { | |
338 | struct snd_soc_pcm_runtime *rtd = | |
339 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
340 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
341 | ||
b8c0dab9 | 342 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 343 | |
103d84a3 | 344 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
345 | codec_dai->driver->playback.stream_name, |
346 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 347 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
348 | |
349 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
350 | if (rtd->pop_wait == 1) { |
351 | rtd->pop_wait = 0; | |
7bd3a6f3 | 352 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 353 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
354 | } |
355 | ||
b8c0dab9 | 356 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
357 | } |
358 | ||
359 | /* | |
360 | * Called by ALSA when a PCM substream is closed. Private data can be | |
361 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
362 | * shutdown. | |
363 | */ | |
91d5e6b4 | 364 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
365 | { |
366 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
367 | struct snd_soc_platform *platform = rtd->platform; | |
368 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
369 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
370 | struct snd_soc_codec *codec = rtd->codec; | |
371 | ||
b8c0dab9 | 372 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
373 | |
374 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
375 | cpu_dai->playback_active--; | |
376 | codec_dai->playback_active--; | |
377 | } else { | |
378 | cpu_dai->capture_active--; | |
379 | codec_dai->capture_active--; | |
380 | } | |
381 | ||
382 | cpu_dai->active--; | |
383 | codec_dai->active--; | |
384 | codec->active--; | |
385 | ||
17841020 DA |
386 | /* clear the corresponding DAIs rate when inactive */ |
387 | if (!cpu_dai->active) | |
388 | cpu_dai->rate = 0; | |
389 | ||
390 | if (!codec_dai->active) | |
391 | codec_dai->rate = 0; | |
25b76791 | 392 | |
ddee627c LG |
393 | /* Muting the DAC suppresses artifacts caused during digital |
394 | * shutdown, for example from stopping clocks. | |
395 | */ | |
da18396f | 396 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
397 | |
398 | if (cpu_dai->driver->ops->shutdown) | |
399 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
400 | ||
401 | if (codec_dai->driver->ops->shutdown) | |
402 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
403 | ||
404 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
405 | rtd->dai_link->ops->shutdown(substream); | |
406 | ||
407 | if (platform->driver->ops && platform->driver->ops->close) | |
408 | platform->driver->ops->close(substream); | |
409 | cpu_dai->runtime = NULL; | |
410 | ||
411 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 412 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 413 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
414 | /* powered down playback stream now */ |
415 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 416 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 417 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
418 | } else { |
419 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 420 | rtd->pop_wait = 1; |
d4e1a73a MB |
421 | queue_delayed_work(system_power_efficient_wq, |
422 | &rtd->delayed_work, | |
423 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 424 | } |
ddee627c LG |
425 | } else { |
426 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 427 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 428 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
429 | } |
430 | ||
b8c0dab9 | 431 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
432 | |
433 | pm_runtime_put(platform->dev); | |
434 | pm_runtime_put(codec_dai->dev); | |
435 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
436 | if (!codec_dai->active) |
437 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
438 | if (!cpu_dai->active) | |
439 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 440 | |
ddee627c LG |
441 | return 0; |
442 | } | |
443 | ||
444 | /* | |
445 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
446 | * rate, etc. This function is non atomic and can be called multiple times, | |
447 | * it can refer to the runtime info. | |
448 | */ | |
449 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
450 | { | |
451 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
452 | struct snd_soc_platform *platform = rtd->platform; | |
453 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
454 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
455 | int ret = 0; | |
456 | ||
b8c0dab9 | 457 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
458 | |
459 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
460 | ret = rtd->dai_link->ops->prepare(substream); | |
461 | if (ret < 0) { | |
103d84a3 LG |
462 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
463 | " %d\n", ret); | |
ddee627c LG |
464 | goto out; |
465 | } | |
466 | } | |
467 | ||
468 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
469 | ret = platform->driver->ops->prepare(substream); | |
470 | if (ret < 0) { | |
103d84a3 LG |
471 | dev_err(platform->dev, "ASoC: platform prepare error:" |
472 | " %d\n", ret); | |
ddee627c LG |
473 | goto out; |
474 | } | |
475 | } | |
476 | ||
c5914b0a | 477 | if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) { |
ddee627c LG |
478 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); |
479 | if (ret < 0) { | |
103d84a3 | 480 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 481 | ret); |
ddee627c LG |
482 | goto out; |
483 | } | |
484 | } | |
485 | ||
c5914b0a | 486 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) { |
ddee627c LG |
487 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
488 | if (ret < 0) { | |
103d84a3 | 489 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 490 | ret); |
ddee627c LG |
491 | goto out; |
492 | } | |
493 | } | |
494 | ||
495 | /* cancel any delayed stream shutdown that is pending */ | |
496 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
497 | rtd->pop_wait) { |
498 | rtd->pop_wait = 0; | |
ddee627c LG |
499 | cancel_delayed_work(&rtd->delayed_work); |
500 | } | |
501 | ||
d9b0951b LG |
502 | snd_soc_dapm_stream_event(rtd, substream->stream, |
503 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 504 | |
da18396f | 505 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
506 | |
507 | out: | |
b8c0dab9 | 508 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
509 | return ret; |
510 | } | |
511 | ||
512 | /* | |
513 | * Called by ALSA when the hardware params are set by application. This | |
514 | * function can also be called multiple times and can allocate buffers | |
515 | * (using snd_pcm_lib_* ). It's non-atomic. | |
516 | */ | |
517 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
518 | struct snd_pcm_hw_params *params) | |
519 | { | |
520 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
521 | struct snd_soc_platform *platform = rtd->platform; | |
522 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
523 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
524 | int ret = 0; | |
525 | ||
b8c0dab9 | 526 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
527 | |
528 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
529 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
530 | if (ret < 0) { | |
103d84a3 LG |
531 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
532 | " failed: %d\n", ret); | |
ddee627c LG |
533 | goto out; |
534 | } | |
535 | } | |
536 | ||
c5914b0a | 537 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_params) { |
ddee627c LG |
538 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); |
539 | if (ret < 0) { | |
103d84a3 LG |
540 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
541 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
542 | goto codec_err; |
543 | } | |
544 | } | |
545 | ||
c5914b0a | 546 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_params) { |
ddee627c LG |
547 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); |
548 | if (ret < 0) { | |
103d84a3 | 549 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 550 | cpu_dai->name, ret); |
ddee627c LG |
551 | goto interface_err; |
552 | } | |
553 | } | |
554 | ||
555 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
556 | ret = platform->driver->ops->hw_params(substream, params); | |
557 | if (ret < 0) { | |
103d84a3 | 558 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 559 | platform->name, ret); |
ddee627c LG |
560 | goto platform_err; |
561 | } | |
562 | } | |
563 | ||
17841020 DA |
564 | /* store the rate for each DAIs */ |
565 | cpu_dai->rate = params_rate(params); | |
566 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
567 | |
568 | out: | |
b8c0dab9 | 569 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
570 | return ret; |
571 | ||
572 | platform_err: | |
c5914b0a | 573 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
574 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
575 | ||
576 | interface_err: | |
c5914b0a | 577 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
578 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
579 | ||
580 | codec_err: | |
581 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
582 | rtd->dai_link->ops->hw_free(substream); | |
583 | ||
b8c0dab9 | 584 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
585 | return ret; |
586 | } | |
587 | ||
588 | /* | |
589 | * Frees resources allocated by hw_params, can be called multiple times | |
590 | */ | |
591 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
592 | { | |
593 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
594 | struct snd_soc_platform *platform = rtd->platform; | |
595 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
596 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
597 | struct snd_soc_codec *codec = rtd->codec; | |
598 | ||
b8c0dab9 | 599 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
600 | |
601 | /* apply codec digital mute */ | |
602 | if (!codec->active) | |
da18396f | 603 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
604 | |
605 | /* free any machine hw params */ | |
606 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
607 | rtd->dai_link->ops->hw_free(substream); | |
608 | ||
609 | /* free any DMA resources */ | |
610 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
611 | platform->driver->ops->hw_free(substream); | |
612 | ||
613 | /* now free hw params for the DAIs */ | |
c5914b0a | 614 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
615 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
616 | ||
c5914b0a | 617 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
618 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
619 | ||
b8c0dab9 | 620 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
621 | return 0; |
622 | } | |
623 | ||
624 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
625 | { | |
626 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
627 | struct snd_soc_platform *platform = rtd->platform; | |
628 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
629 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
630 | int ret; | |
631 | ||
c5914b0a | 632 | if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) { |
ddee627c LG |
633 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); |
634 | if (ret < 0) | |
635 | return ret; | |
636 | } | |
637 | ||
638 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
639 | ret = platform->driver->ops->trigger(substream, cmd); | |
640 | if (ret < 0) | |
641 | return ret; | |
642 | } | |
643 | ||
c5914b0a | 644 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) { |
ddee627c LG |
645 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
646 | if (ret < 0) | |
647 | return ret; | |
648 | } | |
649 | return 0; | |
650 | } | |
651 | ||
45c0a188 MB |
652 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
653 | int cmd) | |
07bf84aa LG |
654 | { |
655 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
656 | struct snd_soc_platform *platform = rtd->platform; | |
657 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
658 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
659 | int ret; | |
660 | ||
c5914b0a MB |
661 | if (codec_dai->driver->ops && |
662 | codec_dai->driver->ops->bespoke_trigger) { | |
07bf84aa LG |
663 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); |
664 | if (ret < 0) | |
665 | return ret; | |
666 | } | |
667 | ||
c5914b0a | 668 | if (platform->driver->ops && platform->driver->bespoke_trigger) { |
07bf84aa LG |
669 | ret = platform->driver->bespoke_trigger(substream, cmd); |
670 | if (ret < 0) | |
671 | return ret; | |
672 | } | |
673 | ||
c5914b0a | 674 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) { |
07bf84aa LG |
675 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); |
676 | if (ret < 0) | |
677 | return ret; | |
678 | } | |
679 | return 0; | |
680 | } | |
ddee627c LG |
681 | /* |
682 | * soc level wrapper for pointer callback | |
683 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
684 | * the runtime->delay will be updated accordingly. | |
685 | */ | |
686 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
687 | { | |
688 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
689 | struct snd_soc_platform *platform = rtd->platform; | |
690 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
691 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
692 | struct snd_pcm_runtime *runtime = substream->runtime; | |
693 | snd_pcm_uframes_t offset = 0; | |
694 | snd_pcm_sframes_t delay = 0; | |
695 | ||
696 | if (platform->driver->ops && platform->driver->ops->pointer) | |
697 | offset = platform->driver->ops->pointer(substream); | |
698 | ||
c5914b0a | 699 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay) |
ddee627c LG |
700 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
701 | ||
c5914b0a | 702 | if (codec_dai->driver->ops && codec_dai->driver->ops->delay) |
ddee627c LG |
703 | delay += codec_dai->driver->ops->delay(substream, codec_dai); |
704 | ||
705 | if (platform->driver->delay) | |
706 | delay += platform->driver->delay(substream, codec_dai); | |
707 | ||
708 | runtime->delay = delay; | |
709 | ||
710 | return offset; | |
711 | } | |
712 | ||
01d7584c LG |
713 | /* connect a FE and BE */ |
714 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
715 | struct snd_soc_pcm_runtime *be, int stream) | |
716 | { | |
717 | struct snd_soc_dpcm *dpcm; | |
718 | ||
719 | /* only add new dpcms */ | |
720 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
721 | if (dpcm->be == be && dpcm->fe == fe) | |
722 | return 0; | |
723 | } | |
724 | ||
725 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
726 | if (!dpcm) | |
727 | return -ENOMEM; | |
728 | ||
729 | dpcm->be = be; | |
730 | dpcm->fe = fe; | |
731 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
732 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
733 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
734 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
735 | ||
7cc302d2 | 736 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
737 | stream ? "capture" : "playback", fe->dai_link->name, |
738 | stream ? "<-" : "->", be->dai_link->name); | |
739 | ||
f86dcef8 LG |
740 | #ifdef CONFIG_DEBUG_FS |
741 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
742 | fe->debugfs_dpcm_root, &dpcm->state); | |
743 | #endif | |
01d7584c LG |
744 | return 1; |
745 | } | |
746 | ||
747 | /* reparent a BE onto another FE */ | |
748 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
749 | struct snd_soc_pcm_runtime *be, int stream) | |
750 | { | |
751 | struct snd_soc_dpcm *dpcm; | |
752 | struct snd_pcm_substream *fe_substream, *be_substream; | |
753 | ||
754 | /* reparent if BE is connected to other FEs */ | |
755 | if (!be->dpcm[stream].users) | |
756 | return; | |
757 | ||
758 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
759 | ||
760 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
761 | if (dpcm->fe == fe) | |
762 | continue; | |
763 | ||
7cc302d2 | 764 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
765 | stream ? "capture" : "playback", |
766 | dpcm->fe->dai_link->name, | |
767 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
768 | ||
769 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
770 | be_substream->runtime = fe_substream->runtime; | |
771 | break; | |
772 | } | |
773 | } | |
774 | ||
775 | /* disconnect a BE and FE */ | |
776 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
777 | { | |
778 | struct snd_soc_dpcm *dpcm, *d; | |
779 | ||
780 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 781 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
782 | stream ? "capture" : "playback", |
783 | dpcm->be->dai_link->name); | |
784 | ||
785 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
786 | continue; | |
787 | ||
7cc302d2 | 788 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
789 | stream ? "capture" : "playback", fe->dai_link->name, |
790 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
791 | ||
792 | /* BEs still alive need new FE */ | |
793 | dpcm_be_reparent(fe, dpcm->be, stream); | |
794 | ||
f86dcef8 LG |
795 | #ifdef CONFIG_DEBUG_FS |
796 | debugfs_remove(dpcm->debugfs_state); | |
797 | #endif | |
01d7584c LG |
798 | list_del(&dpcm->list_be); |
799 | list_del(&dpcm->list_fe); | |
800 | kfree(dpcm); | |
801 | } | |
802 | } | |
803 | ||
804 | /* get BE for DAI widget and stream */ | |
805 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
806 | struct snd_soc_dapm_widget *widget, int stream) | |
807 | { | |
808 | struct snd_soc_pcm_runtime *be; | |
809 | int i; | |
810 | ||
811 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
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->playback_widget == widget || |
819 | be->codec_dai->playback_widget == widget) | |
820 | return be; | |
821 | } | |
822 | } else { | |
823 | ||
824 | for (i = 0; i < card->num_links; i++) { | |
825 | be = &card->rtd[i]; | |
826 | ||
35ea0655 LG |
827 | if (!be->dai_link->no_pcm) |
828 | continue; | |
829 | ||
01d7584c LG |
830 | if (be->cpu_dai->capture_widget == widget || |
831 | be->codec_dai->capture_widget == widget) | |
832 | return be; | |
833 | } | |
834 | } | |
835 | ||
103d84a3 | 836 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
837 | stream ? "capture" : "playback", widget->name); |
838 | return NULL; | |
839 | } | |
840 | ||
841 | static inline struct snd_soc_dapm_widget * | |
842 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
843 | { | |
844 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
845 | return rtd->cpu_dai->playback_widget; | |
846 | else | |
847 | return rtd->cpu_dai->capture_widget; | |
848 | } | |
849 | ||
850 | static inline struct snd_soc_dapm_widget * | |
851 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
852 | { | |
853 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
854 | return rtd->codec_dai->playback_widget; | |
855 | else | |
856 | return rtd->codec_dai->capture_widget; | |
857 | } | |
858 | ||
859 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
860 | struct snd_soc_dapm_widget *widget) | |
861 | { | |
862 | int i; | |
863 | ||
864 | for (i = 0; i < list->num_widgets; i++) { | |
865 | if (widget == list->widgets[i]) | |
866 | return 1; | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
873 | int stream, struct snd_soc_dapm_widget_list **list_) | |
874 | { | |
875 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
876 | struct snd_soc_dapm_widget_list *list; | |
877 | int paths; | |
878 | ||
879 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
880 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
881 | if (list == NULL) | |
882 | return -ENOMEM; | |
883 | ||
884 | /* get number of valid DAI paths and their widgets */ | |
885 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
886 | ||
103d84a3 | 887 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
888 | stream ? "capture" : "playback"); |
889 | ||
890 | *list_ = list; | |
891 | return paths; | |
892 | } | |
893 | ||
894 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
895 | { | |
896 | kfree(*list); | |
897 | } | |
898 | ||
899 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
900 | struct snd_soc_dapm_widget_list **list_) | |
901 | { | |
902 | struct snd_soc_dpcm *dpcm; | |
903 | struct snd_soc_dapm_widget_list *list = *list_; | |
904 | struct snd_soc_dapm_widget *widget; | |
905 | int prune = 0; | |
906 | ||
907 | /* Destroy any old FE <--> BE connections */ | |
908 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
909 | ||
910 | /* is there a valid CPU DAI widget for this BE */ | |
911 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
912 | ||
913 | /* prune the BE if it's no longer in our active list */ | |
914 | if (widget && widget_in_list(list, widget)) | |
915 | continue; | |
916 | ||
917 | /* is there a valid CODEC DAI widget for this BE */ | |
918 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
919 | ||
920 | /* prune the BE if it's no longer in our active list */ | |
921 | if (widget && widget_in_list(list, widget)) | |
922 | continue; | |
923 | ||
103d84a3 | 924 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
925 | stream ? "capture" : "playback", |
926 | dpcm->be->dai_link->name, fe->dai_link->name); | |
927 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
928 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
929 | prune++; | |
930 | } | |
931 | ||
103d84a3 | 932 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
933 | return prune; |
934 | } | |
935 | ||
936 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
937 | struct snd_soc_dapm_widget_list **list_) | |
938 | { | |
939 | struct snd_soc_card *card = fe->card; | |
940 | struct snd_soc_dapm_widget_list *list = *list_; | |
941 | struct snd_soc_pcm_runtime *be; | |
942 | int i, new = 0, err; | |
943 | ||
944 | /* Create any new FE <--> BE connections */ | |
945 | for (i = 0; i < list->num_widgets; i++) { | |
946 | ||
4616274d MB |
947 | switch (list->widgets[i]->id) { |
948 | case snd_soc_dapm_dai_in: | |
949 | case snd_soc_dapm_dai_out: | |
950 | break; | |
951 | default: | |
01d7584c | 952 | continue; |
4616274d | 953 | } |
01d7584c LG |
954 | |
955 | /* is there a valid BE rtd for this widget */ | |
956 | be = dpcm_get_be(card, list->widgets[i], stream); | |
957 | if (!be) { | |
103d84a3 | 958 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
959 | list->widgets[i]->name); |
960 | continue; | |
961 | } | |
962 | ||
963 | /* make sure BE is a real BE */ | |
964 | if (!be->dai_link->no_pcm) | |
965 | continue; | |
966 | ||
967 | /* don't connect if FE is not running */ | |
968 | if (!fe->dpcm[stream].runtime) | |
969 | continue; | |
970 | ||
971 | /* newly connected FE and BE */ | |
972 | err = dpcm_be_connect(fe, be, stream); | |
973 | if (err < 0) { | |
103d84a3 | 974 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
975 | list->widgets[i]->name); |
976 | break; | |
977 | } else if (err == 0) /* already connected */ | |
978 | continue; | |
979 | ||
980 | /* new */ | |
981 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
982 | new++; | |
983 | } | |
984 | ||
103d84a3 | 985 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
986 | return new; |
987 | } | |
988 | ||
989 | /* | |
990 | * Find the corresponding BE DAIs that source or sink audio to this | |
991 | * FE substream. | |
992 | */ | |
993 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
994 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
995 | { | |
996 | if (new) | |
997 | return dpcm_add_paths(fe, stream, list); | |
998 | else | |
999 | return dpcm_prune_paths(fe, stream, list); | |
1000 | } | |
1001 | ||
1002 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
1003 | { | |
1004 | struct snd_soc_dpcm *dpcm; | |
1005 | ||
1006 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1007 | dpcm->be->dpcm[stream].runtime_update = | |
1008 | SND_SOC_DPCM_UPDATE_NO; | |
1009 | } | |
1010 | ||
1011 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1012 | int stream) | |
1013 | { | |
1014 | struct snd_soc_dpcm *dpcm; | |
1015 | ||
1016 | /* disable any enabled and non active backends */ | |
1017 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1018 | ||
1019 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1020 | struct snd_pcm_substream *be_substream = | |
1021 | snd_soc_dpcm_get_substream(be, stream); | |
1022 | ||
1023 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1024 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1025 | stream ? "capture" : "playback", |
1026 | be->dpcm[stream].state); | |
1027 | ||
1028 | if (--be->dpcm[stream].users != 0) | |
1029 | continue; | |
1030 | ||
1031 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1032 | continue; | |
1033 | ||
1034 | soc_pcm_close(be_substream); | |
1035 | be_substream->runtime = NULL; | |
1036 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1041 | { | |
1042 | struct snd_soc_dpcm *dpcm; | |
1043 | int err, count = 0; | |
1044 | ||
1045 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1046 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1047 | ||
1048 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1049 | struct snd_pcm_substream *be_substream = | |
1050 | snd_soc_dpcm_get_substream(be, stream); | |
1051 | ||
2062b4c5 RKAL |
1052 | if (!be_substream) { |
1053 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1054 | stream ? "capture" : "playback"); | |
1055 | continue; | |
1056 | } | |
1057 | ||
01d7584c LG |
1058 | /* is this op for this BE ? */ |
1059 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1060 | continue; | |
1061 | ||
1062 | /* first time the dpcm is open ? */ | |
1063 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1064 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1065 | stream ? "capture" : "playback", |
1066 | be->dpcm[stream].state); | |
1067 | ||
1068 | if (be->dpcm[stream].users++ != 0) | |
1069 | continue; | |
1070 | ||
1071 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1072 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1073 | continue; | |
1074 | ||
2062b4c5 RKAL |
1075 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1076 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c LG |
1077 | |
1078 | be_substream->runtime = be->dpcm[stream].runtime; | |
1079 | err = soc_pcm_open(be_substream); | |
1080 | if (err < 0) { | |
103d84a3 | 1081 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1082 | be->dpcm[stream].users--; |
1083 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1084 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1085 | stream ? "capture" : "playback", |
1086 | be->dpcm[stream].state); | |
1087 | ||
1088 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1089 | goto unwind; | |
1090 | } | |
1091 | ||
1092 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1093 | count++; | |
1094 | } | |
1095 | ||
1096 | return count; | |
1097 | ||
1098 | unwind: | |
1099 | /* disable any enabled and non active backends */ | |
1100 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1101 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1102 | struct snd_pcm_substream *be_substream = | |
1103 | snd_soc_dpcm_get_substream(be, stream); | |
1104 | ||
1105 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1106 | continue; | |
1107 | ||
1108 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1109 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1110 | stream ? "capture" : "playback", |
1111 | be->dpcm[stream].state); | |
1112 | ||
1113 | if (--be->dpcm[stream].users != 0) | |
1114 | continue; | |
1115 | ||
1116 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1117 | continue; | |
1118 | ||
1119 | soc_pcm_close(be_substream); | |
1120 | be_substream->runtime = NULL; | |
1121 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1122 | } | |
1123 | ||
1124 | return err; | |
1125 | } | |
1126 | ||
45c0a188 | 1127 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1128 | { |
1129 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1130 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1131 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1132 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1133 | ||
1134 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1135 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1136 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1137 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1138 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1139 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1140 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1141 | } else { | |
1142 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1143 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1144 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1145 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1146 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1147 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1152 | { | |
1153 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1154 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1155 | int stream = fe_substream->stream, ret = 0; | |
1156 | ||
1157 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1158 | ||
1159 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1160 | if (ret < 0) { | |
103d84a3 | 1161 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1162 | goto be_err; |
1163 | } | |
1164 | ||
103d84a3 | 1165 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1166 | |
1167 | /* start the DAI frontend */ | |
1168 | ret = soc_pcm_open(fe_substream); | |
1169 | if (ret < 0) { | |
103d84a3 | 1170 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1171 | goto unwind; |
1172 | } | |
1173 | ||
1174 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1175 | ||
1176 | dpcm_set_fe_runtime(fe_substream); | |
1177 | snd_pcm_limit_hw_rates(runtime); | |
1178 | ||
1179 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1180 | return 0; | |
1181 | ||
1182 | unwind: | |
1183 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1184 | be_err: | |
1185 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1186 | return ret; | |
1187 | } | |
1188 | ||
1189 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1190 | { | |
1191 | struct snd_soc_dpcm *dpcm; | |
1192 | ||
1193 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1194 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1195 | ||
1196 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1197 | struct snd_pcm_substream *be_substream = | |
1198 | snd_soc_dpcm_get_substream(be, stream); | |
1199 | ||
1200 | /* is this op for this BE ? */ | |
1201 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1202 | continue; | |
1203 | ||
1204 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1205 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1206 | stream ? "capture" : "playback", |
1207 | be->dpcm[stream].state); | |
1208 | ||
1209 | if (--be->dpcm[stream].users != 0) | |
1210 | continue; | |
1211 | ||
1212 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1213 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1214 | continue; | |
1215 | ||
103d84a3 | 1216 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1217 | dpcm->fe->dai_link->name); |
1218 | ||
1219 | soc_pcm_close(be_substream); | |
1220 | be_substream->runtime = NULL; | |
1221 | ||
1222 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1223 | } | |
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1228 | { | |
1229 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1230 | int stream = substream->stream; | |
1231 | ||
1232 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1233 | ||
1234 | /* shutdown the BEs */ | |
1235 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1236 | ||
103d84a3 | 1237 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1238 | |
1239 | /* now shutdown the frontend */ | |
1240 | soc_pcm_close(substream); | |
1241 | ||
1242 | /* run the stream event for each BE */ | |
1243 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1244 | ||
1245 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1246 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1251 | { | |
1252 | struct snd_soc_dpcm *dpcm; | |
1253 | ||
1254 | /* only hw_params backends that are either sinks or sources | |
1255 | * to this frontend DAI */ | |
1256 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1257 | ||
1258 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1259 | struct snd_pcm_substream *be_substream = | |
1260 | snd_soc_dpcm_get_substream(be, stream); | |
1261 | ||
1262 | /* is this op for this BE ? */ | |
1263 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1264 | continue; | |
1265 | ||
1266 | /* only free hw when no longer used - check all FEs */ | |
1267 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1268 | continue; | |
1269 | ||
1270 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1271 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1272 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1273 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1274 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1275 | continue; | |
1276 | ||
103d84a3 | 1277 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1278 | dpcm->fe->dai_link->name); |
1279 | ||
1280 | soc_pcm_hw_free(be_substream); | |
1281 | ||
1282 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1283 | } | |
1284 | ||
1285 | return 0; | |
1286 | } | |
1287 | ||
45c0a188 | 1288 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1289 | { |
1290 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1291 | int err, stream = substream->stream; | |
1292 | ||
1293 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1294 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1295 | ||
103d84a3 | 1296 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1297 | |
1298 | /* call hw_free on the frontend */ | |
1299 | err = soc_pcm_hw_free(substream); | |
1300 | if (err < 0) | |
103d84a3 | 1301 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1302 | fe->dai_link->name); |
1303 | ||
1304 | /* only hw_params backends that are either sinks or sources | |
1305 | * to this frontend DAI */ | |
1306 | err = dpcm_be_dai_hw_free(fe, stream); | |
1307 | ||
1308 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1309 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1310 | ||
1311 | mutex_unlock(&fe->card->mutex); | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1316 | { | |
1317 | struct snd_soc_dpcm *dpcm; | |
1318 | int ret; | |
1319 | ||
1320 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1321 | ||
1322 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1323 | struct snd_pcm_substream *be_substream = | |
1324 | snd_soc_dpcm_get_substream(be, stream); | |
1325 | ||
1326 | /* is this op for this BE ? */ | |
1327 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1328 | continue; | |
1329 | ||
1330 | /* only allow hw_params() if no connected FEs are running */ | |
1331 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1332 | continue; | |
1333 | ||
1334 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1335 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1336 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1337 | continue; | |
1338 | ||
103d84a3 | 1339 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1340 | dpcm->fe->dai_link->name); |
1341 | ||
1342 | /* copy params for each dpcm */ | |
1343 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1344 | sizeof(struct snd_pcm_hw_params)); | |
1345 | ||
1346 | /* perform any hw_params fixups */ | |
1347 | if (be->dai_link->be_hw_params_fixup) { | |
1348 | ret = be->dai_link->be_hw_params_fixup(be, | |
1349 | &dpcm->hw_params); | |
1350 | if (ret < 0) { | |
1351 | dev_err(be->dev, | |
103d84a3 | 1352 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1353 | ret); |
1354 | goto unwind; | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1359 | if (ret < 0) { | |
1360 | dev_err(dpcm->be->dev, | |
103d84a3 | 1361 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1362 | goto unwind; |
1363 | } | |
1364 | ||
1365 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1366 | } | |
1367 | return 0; | |
1368 | ||
1369 | unwind: | |
1370 | /* disable any enabled and non active backends */ | |
1371 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1372 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1373 | struct snd_pcm_substream *be_substream = | |
1374 | snd_soc_dpcm_get_substream(be, stream); | |
1375 | ||
1376 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1377 | continue; | |
1378 | ||
1379 | /* only allow hw_free() if no connected FEs are running */ | |
1380 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1381 | continue; | |
1382 | ||
1383 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1384 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1385 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1386 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1387 | continue; | |
1388 | ||
1389 | soc_pcm_hw_free(be_substream); | |
1390 | } | |
1391 | ||
1392 | return ret; | |
1393 | } | |
1394 | ||
45c0a188 MB |
1395 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1396 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1397 | { |
1398 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1399 | int ret, stream = substream->stream; | |
1400 | ||
1401 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1402 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1403 | ||
1404 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1405 | sizeof(struct snd_pcm_hw_params)); | |
1406 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1407 | if (ret < 0) { | |
103d84a3 | 1408 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1409 | goto out; |
1410 | } | |
1411 | ||
103d84a3 | 1412 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1413 | fe->dai_link->name, params_rate(params), |
1414 | params_channels(params), params_format(params)); | |
1415 | ||
1416 | /* call hw_params on the frontend */ | |
1417 | ret = soc_pcm_hw_params(substream, params); | |
1418 | if (ret < 0) { | |
103d84a3 | 1419 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1420 | dpcm_be_dai_hw_free(fe, stream); |
1421 | } else | |
1422 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1423 | ||
1424 | out: | |
1425 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1426 | mutex_unlock(&fe->card->mutex); | |
1427 | return ret; | |
1428 | } | |
1429 | ||
1430 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1431 | struct snd_pcm_substream *substream, int cmd) | |
1432 | { | |
1433 | int ret; | |
1434 | ||
103d84a3 | 1435 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1436 | dpcm->fe->dai_link->name, cmd); |
1437 | ||
1438 | ret = soc_pcm_trigger(substream, cmd); | |
1439 | if (ret < 0) | |
103d84a3 | 1440 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1441 | |
1442 | return ret; | |
1443 | } | |
1444 | ||
45c0a188 MB |
1445 | static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
1446 | int cmd) | |
01d7584c LG |
1447 | { |
1448 | struct snd_soc_dpcm *dpcm; | |
1449 | int ret = 0; | |
1450 | ||
1451 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1452 | ||
1453 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1454 | struct snd_pcm_substream *be_substream = | |
1455 | snd_soc_dpcm_get_substream(be, stream); | |
1456 | ||
1457 | /* is this op for this BE ? */ | |
1458 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1459 | continue; | |
1460 | ||
1461 | switch (cmd) { | |
1462 | case SNDRV_PCM_TRIGGER_START: | |
1463 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1464 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1465 | continue; | |
1466 | ||
1467 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1468 | if (ret) | |
1469 | return ret; | |
1470 | ||
1471 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1472 | break; | |
1473 | case SNDRV_PCM_TRIGGER_RESUME: | |
1474 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1475 | continue; | |
1476 | ||
1477 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1478 | if (ret) | |
1479 | return ret; | |
1480 | ||
1481 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1482 | break; | |
1483 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1484 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1485 | continue; | |
1486 | ||
1487 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1488 | if (ret) | |
1489 | return ret; | |
1490 | ||
1491 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1492 | break; | |
1493 | case SNDRV_PCM_TRIGGER_STOP: | |
1494 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1495 | continue; | |
1496 | ||
1497 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1498 | continue; | |
1499 | ||
1500 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1501 | if (ret) | |
1502 | return ret; | |
1503 | ||
1504 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1505 | break; | |
1506 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1507 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1508 | continue; | |
1509 | ||
1510 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1511 | continue; | |
1512 | ||
1513 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1514 | if (ret) | |
1515 | return ret; | |
1516 | ||
1517 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1518 | break; | |
1519 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1520 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1521 | continue; | |
1522 | ||
1523 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1524 | continue; | |
1525 | ||
1526 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1527 | if (ret) | |
1528 | return ret; | |
1529 | ||
1530 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1531 | break; | |
1532 | } | |
1533 | } | |
1534 | ||
1535 | return ret; | |
1536 | } | |
1537 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1538 | ||
45c0a188 | 1539 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1540 | { |
1541 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1542 | int stream = substream->stream, ret; | |
1543 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1544 | ||
1545 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1546 | ||
1547 | switch (trigger) { | |
1548 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1549 | /* call trigger on the frontend before the backend. */ | |
1550 | ||
103d84a3 | 1551 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1552 | fe->dai_link->name, cmd); |
1553 | ||
1554 | ret = soc_pcm_trigger(substream, cmd); | |
1555 | if (ret < 0) { | |
103d84a3 | 1556 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1557 | goto out; |
1558 | } | |
1559 | ||
1560 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1561 | break; | |
1562 | case SND_SOC_DPCM_TRIGGER_POST: | |
1563 | /* call trigger on the frontend after the backend. */ | |
1564 | ||
1565 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1566 | if (ret < 0) { | |
103d84a3 | 1567 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1568 | goto out; |
1569 | } | |
1570 | ||
103d84a3 | 1571 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1572 | fe->dai_link->name, cmd); |
1573 | ||
1574 | ret = soc_pcm_trigger(substream, cmd); | |
1575 | break; | |
07bf84aa LG |
1576 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1577 | /* bespoke trigger() - handles both FE and BEs */ | |
1578 | ||
103d84a3 | 1579 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1580 | fe->dai_link->name, cmd); |
1581 | ||
1582 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1583 | if (ret < 0) { | |
103d84a3 | 1584 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1585 | goto out; |
1586 | } | |
1587 | break; | |
01d7584c | 1588 | default: |
103d84a3 | 1589 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1590 | fe->dai_link->name); |
1591 | ret = -EINVAL; | |
1592 | goto out; | |
1593 | } | |
1594 | ||
1595 | switch (cmd) { | |
1596 | case SNDRV_PCM_TRIGGER_START: | |
1597 | case SNDRV_PCM_TRIGGER_RESUME: | |
1598 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1599 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1600 | break; | |
1601 | case SNDRV_PCM_TRIGGER_STOP: | |
1602 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1603 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1604 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1605 | break; | |
1606 | } | |
1607 | ||
1608 | out: | |
1609 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1610 | return ret; | |
1611 | } | |
1612 | ||
1613 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1614 | { | |
1615 | struct snd_soc_dpcm *dpcm; | |
1616 | int ret = 0; | |
1617 | ||
1618 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1619 | ||
1620 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1621 | struct snd_pcm_substream *be_substream = | |
1622 | snd_soc_dpcm_get_substream(be, stream); | |
1623 | ||
1624 | /* is this op for this BE ? */ | |
1625 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1626 | continue; | |
1627 | ||
1628 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1629 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1630 | continue; | |
1631 | ||
103d84a3 | 1632 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1633 | dpcm->fe->dai_link->name); |
1634 | ||
1635 | ret = soc_pcm_prepare(be_substream); | |
1636 | if (ret < 0) { | |
103d84a3 | 1637 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1638 | ret); |
1639 | break; | |
1640 | } | |
1641 | ||
1642 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1643 | } | |
1644 | return ret; | |
1645 | } | |
1646 | ||
45c0a188 | 1647 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1648 | { |
1649 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1650 | int stream = substream->stream, ret = 0; | |
1651 | ||
1652 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1653 | ||
103d84a3 | 1654 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1655 | |
1656 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1657 | ||
1658 | /* there is no point preparing this FE if there are no BEs */ | |
1659 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1660 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1661 | fe->dai_link->name); |
1662 | ret = -EINVAL; | |
1663 | goto out; | |
1664 | } | |
1665 | ||
1666 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1667 | if (ret < 0) | |
1668 | goto out; | |
1669 | ||
1670 | /* call prepare on the frontend */ | |
1671 | ret = soc_pcm_prepare(substream); | |
1672 | if (ret < 0) { | |
103d84a3 | 1673 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1674 | fe->dai_link->name); |
1675 | goto out; | |
1676 | } | |
1677 | ||
1678 | /* run the stream event for each BE */ | |
1679 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1680 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1681 | ||
1682 | out: | |
1683 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1684 | mutex_unlock(&fe->card->mutex); | |
1685 | ||
1686 | return ret; | |
1687 | } | |
1688 | ||
be3f3f2c LG |
1689 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1690 | unsigned int cmd, void *arg) | |
1691 | { | |
1692 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1693 | struct snd_soc_platform *platform = rtd->platform; | |
1694 | ||
c5914b0a | 1695 | if (platform->driver->ops && platform->driver->ops->ioctl) |
be3f3f2c LG |
1696 | return platform->driver->ops->ioctl(substream, cmd, arg); |
1697 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1698 | } | |
1699 | ||
618dae11 LG |
1700 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1701 | { | |
07bf84aa LG |
1702 | struct snd_pcm_substream *substream = |
1703 | snd_soc_dpcm_get_substream(fe, stream); | |
1704 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1705 | int err; |
1706 | ||
103d84a3 | 1707 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1708 | stream ? "capture" : "playback", fe->dai_link->name); |
1709 | ||
07bf84aa LG |
1710 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1711 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1712 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1713 | fe->dai_link->name); |
1714 | ||
1715 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1716 | if (err < 0) | |
103d84a3 | 1717 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1718 | } else { |
103d84a3 | 1719 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1720 | fe->dai_link->name); |
1721 | ||
1722 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1723 | if (err < 0) | |
103d84a3 | 1724 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1725 | } |
618dae11 LG |
1726 | |
1727 | err = dpcm_be_dai_hw_free(fe, stream); | |
1728 | if (err < 0) | |
103d84a3 | 1729 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1730 | |
1731 | err = dpcm_be_dai_shutdown(fe, stream); | |
1732 | if (err < 0) | |
103d84a3 | 1733 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1734 | |
1735 | /* run the stream event for each BE */ | |
1736 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1737 | ||
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1742 | { | |
07bf84aa LG |
1743 | struct snd_pcm_substream *substream = |
1744 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1745 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1746 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1747 | int ret; |
1748 | ||
103d84a3 | 1749 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1750 | stream ? "capture" : "playback", fe->dai_link->name); |
1751 | ||
1752 | /* Only start the BE if the FE is ready */ | |
1753 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1754 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1755 | return -EINVAL; | |
1756 | ||
1757 | /* startup must always be called for new BEs */ | |
1758 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1759 | if (ret < 0) |
618dae11 | 1760 | goto disconnect; |
618dae11 LG |
1761 | |
1762 | /* keep going if FE state is > open */ | |
1763 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1764 | return 0; | |
01d7584c | 1765 | |
618dae11 | 1766 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1767 | if (ret < 0) |
618dae11 | 1768 | goto close; |
618dae11 LG |
1769 | |
1770 | /* keep going if FE state is > hw_params */ | |
1771 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1772 | return 0; | |
1773 | ||
1774 | ||
1775 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1776 | if (ret < 0) |
618dae11 | 1777 | goto hw_free; |
618dae11 LG |
1778 | |
1779 | /* run the stream event for each BE */ | |
1780 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1781 | ||
1782 | /* keep going if FE state is > prepare */ | |
1783 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1784 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1785 | return 0; | |
1786 | ||
07bf84aa LG |
1787 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1788 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1789 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1790 | fe->dai_link->name); |
618dae11 | 1791 | |
07bf84aa LG |
1792 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1793 | if (ret < 0) { | |
103d84a3 | 1794 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1795 | goto hw_free; |
1796 | } | |
1797 | } else { | |
103d84a3 | 1798 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1799 | fe->dai_link->name); |
1800 | ||
1801 | ret = dpcm_be_dai_trigger(fe, stream, | |
1802 | SNDRV_PCM_TRIGGER_START); | |
1803 | if (ret < 0) { | |
103d84a3 | 1804 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1805 | goto hw_free; |
1806 | } | |
618dae11 LG |
1807 | } |
1808 | ||
1809 | return 0; | |
1810 | ||
1811 | hw_free: | |
1812 | dpcm_be_dai_hw_free(fe, stream); | |
1813 | close: | |
1814 | dpcm_be_dai_shutdown(fe, stream); | |
1815 | disconnect: | |
1816 | /* disconnect any non started BEs */ | |
1817 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1818 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1819 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1820 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1821 | } | |
1822 | ||
1823 | return ret; | |
1824 | } | |
1825 | ||
1826 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1827 | { | |
1828 | int ret; | |
1829 | ||
1830 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1831 | ret = dpcm_run_update_startup(fe, stream); | |
1832 | if (ret < 0) | |
103d84a3 | 1833 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1834 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1835 | ||
1836 | return ret; | |
1837 | } | |
1838 | ||
1839 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1840 | { | |
1841 | int ret; | |
1842 | ||
1843 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1844 | ret = dpcm_run_update_shutdown(fe, stream); | |
1845 | if (ret < 0) | |
103d84a3 | 1846 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1847 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1848 | ||
1849 | return ret; | |
1850 | } | |
1851 | ||
1852 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1853 | * any DAI links. | |
1854 | */ | |
c3f48ae6 | 1855 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 1856 | { |
618dae11 LG |
1857 | int i, old, new, paths; |
1858 | ||
618dae11 LG |
1859 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
1860 | for (i = 0; i < card->num_rtd; i++) { | |
1861 | struct snd_soc_dapm_widget_list *list; | |
1862 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1863 | ||
1864 | /* make sure link is FE */ | |
1865 | if (!fe->dai_link->dynamic) | |
1866 | continue; | |
1867 | ||
1868 | /* only check active links */ | |
1869 | if (!fe->cpu_dai->active) | |
1870 | continue; | |
1871 | ||
1872 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1873 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1874 | fe->dai_link->name); |
1875 | ||
1876 | /* skip if FE doesn't have playback capability */ | |
1877 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1878 | goto capture; | |
1879 | ||
1880 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1881 | if (paths < 0) { | |
103d84a3 | 1882 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1883 | fe->dai_link->name, "playback"); |
1884 | mutex_unlock(&card->mutex); | |
1885 | return paths; | |
1886 | } | |
1887 | ||
1888 | /* update any new playback paths */ | |
1889 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1890 | if (new) { | |
1891 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1892 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1893 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1894 | } | |
1895 | ||
1896 | /* update any old playback paths */ | |
1897 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1898 | if (old) { | |
1899 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1900 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1901 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1902 | } | |
1903 | ||
1904 | capture: | |
1905 | /* skip if FE doesn't have capture capability */ | |
1906 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1907 | continue; | |
1908 | ||
1909 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1910 | if (paths < 0) { | |
103d84a3 | 1911 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1912 | fe->dai_link->name, "capture"); |
1913 | mutex_unlock(&card->mutex); | |
1914 | return paths; | |
1915 | } | |
1916 | ||
1917 | /* update any new capture paths */ | |
1918 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1919 | if (new) { | |
1920 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1921 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1922 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1923 | } | |
1924 | ||
1925 | /* update any old capture paths */ | |
1926 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1927 | if (old) { | |
1928 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1929 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1930 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1931 | } | |
1932 | ||
1933 | dpcm_path_put(&list); | |
1934 | } | |
1935 | ||
1936 | mutex_unlock(&card->mutex); | |
1937 | return 0; | |
1938 | } | |
01d7584c LG |
1939 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1940 | { | |
1941 | struct snd_soc_dpcm *dpcm; | |
1942 | struct list_head *clients = | |
1943 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1944 | ||
1945 | list_for_each_entry(dpcm, clients, list_be) { | |
1946 | ||
1947 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1948 | struct snd_soc_dai *dai = be->codec_dai; | |
1949 | struct snd_soc_dai_driver *drv = dai->driver; | |
1950 | ||
1951 | if (be->dai_link->ignore_suspend) | |
1952 | continue; | |
1953 | ||
103d84a3 | 1954 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c | 1955 | |
c5914b0a MB |
1956 | if (drv->ops && drv->ops->digital_mute && dai->playback_active) |
1957 | drv->ops->digital_mute(dai, mute); | |
01d7584c LG |
1958 | } |
1959 | ||
1960 | return 0; | |
1961 | } | |
1962 | ||
45c0a188 | 1963 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1964 | { |
1965 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1966 | struct snd_soc_dpcm *dpcm; | |
1967 | struct snd_soc_dapm_widget_list *list; | |
1968 | int ret; | |
1969 | int stream = fe_substream->stream; | |
1970 | ||
1971 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1972 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1973 | ||
1974 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
103d84a3 | 1975 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 1976 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
1977 | } |
1978 | ||
1979 | /* calculate valid and active FE <-> BE dpcms */ | |
1980 | dpcm_process_paths(fe, stream, &list, 1); | |
1981 | ||
1982 | ret = dpcm_fe_dai_startup(fe_substream); | |
1983 | if (ret < 0) { | |
1984 | /* clean up all links */ | |
1985 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1986 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1987 | ||
1988 | dpcm_be_disconnect(fe, stream); | |
1989 | fe->dpcm[stream].runtime = NULL; | |
1990 | } | |
1991 | ||
1992 | dpcm_clear_pending_state(fe, stream); | |
1993 | dpcm_path_put(&list); | |
1994 | mutex_unlock(&fe->card->mutex); | |
1995 | return ret; | |
1996 | } | |
1997 | ||
45c0a188 | 1998 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1999 | { |
2000 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2001 | struct snd_soc_dpcm *dpcm; | |
2002 | int stream = fe_substream->stream, ret; | |
2003 | ||
2004 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2005 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
2006 | ||
2007 | /* mark FE's links ready to prune */ | |
2008 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2009 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2010 | ||
2011 | dpcm_be_disconnect(fe, stream); | |
2012 | ||
2013 | fe->dpcm[stream].runtime = NULL; | |
2014 | mutex_unlock(&fe->card->mutex); | |
2015 | return ret; | |
2016 | } | |
2017 | ||
ddee627c LG |
2018 | /* create a new pcm */ |
2019 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2020 | { | |
ddee627c LG |
2021 | struct snd_soc_platform *platform = rtd->platform; |
2022 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2023 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2024 | struct snd_pcm *pcm; | |
2025 | char new_name[64]; | |
2026 | int ret = 0, playback = 0, capture = 0; | |
2027 | ||
01d7584c LG |
2028 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
2029 | if (cpu_dai->driver->playback.channels_min) | |
2030 | playback = 1; | |
2031 | if (cpu_dai->driver->capture.channels_min) | |
2032 | capture = 1; | |
2033 | } else { | |
05679092 MB |
2034 | if (codec_dai->driver->playback.channels_min && |
2035 | cpu_dai->driver->playback.channels_min) | |
01d7584c | 2036 | playback = 1; |
05679092 MB |
2037 | if (codec_dai->driver->capture.channels_min && |
2038 | cpu_dai->driver->capture.channels_min) | |
01d7584c LG |
2039 | capture = 1; |
2040 | } | |
2041 | ||
d6bead02 FE |
2042 | if (rtd->dai_link->playback_only) { |
2043 | playback = 1; | |
2044 | capture = 0; | |
2045 | } | |
2046 | ||
2047 | if (rtd->dai_link->capture_only) { | |
2048 | playback = 0; | |
2049 | capture = 1; | |
2050 | } | |
2051 | ||
01d7584c LG |
2052 | /* create the PCM */ |
2053 | if (rtd->dai_link->no_pcm) { | |
2054 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2055 | rtd->dai_link->stream_name); | |
2056 | ||
2057 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2058 | playback, capture, &pcm); | |
2059 | } else { | |
2060 | if (rtd->dai_link->dynamic) | |
2061 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2062 | rtd->dai_link->stream_name); | |
2063 | else | |
2064 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2065 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2066 | ||
2067 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2068 | capture, &pcm); | |
2069 | } | |
ddee627c | 2070 | if (ret < 0) { |
103d84a3 | 2071 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2072 | rtd->dai_link->name); |
ddee627c LG |
2073 | return ret; |
2074 | } | |
103d84a3 | 2075 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2076 | |
2077 | /* DAPM dai link stream work */ | |
2078 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2079 | ||
2080 | rtd->pcm = pcm; | |
2081 | pcm->private_data = rtd; | |
01d7584c LG |
2082 | |
2083 | if (rtd->dai_link->no_pcm) { | |
2084 | if (playback) | |
2085 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2086 | if (capture) | |
2087 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2088 | goto out; | |
2089 | } | |
2090 | ||
2091 | /* ASoC PCM operations */ | |
2092 | if (rtd->dai_link->dynamic) { | |
2093 | rtd->ops.open = dpcm_fe_dai_open; | |
2094 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2095 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2096 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2097 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2098 | rtd->ops.close = dpcm_fe_dai_close; | |
2099 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2100 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2101 | } else { |
2102 | rtd->ops.open = soc_pcm_open; | |
2103 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2104 | rtd->ops.prepare = soc_pcm_prepare; | |
2105 | rtd->ops.trigger = soc_pcm_trigger; | |
2106 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2107 | rtd->ops.close = soc_pcm_close; | |
2108 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2109 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2110 | } |
2111 | ||
ddee627c | 2112 | if (platform->driver->ops) { |
01d7584c LG |
2113 | rtd->ops.ack = platform->driver->ops->ack; |
2114 | rtd->ops.copy = platform->driver->ops->copy; | |
2115 | rtd->ops.silence = platform->driver->ops->silence; | |
2116 | rtd->ops.page = platform->driver->ops->page; | |
2117 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2118 | } |
2119 | ||
2120 | if (playback) | |
01d7584c | 2121 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2122 | |
2123 | if (capture) | |
01d7584c | 2124 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2125 | |
2126 | if (platform->driver->pcm_new) { | |
2127 | ret = platform->driver->pcm_new(rtd); | |
2128 | if (ret < 0) { | |
b1bc7b3c MB |
2129 | dev_err(platform->dev, |
2130 | "ASoC: pcm constructor failed: %d\n", | |
2131 | ret); | |
ddee627c LG |
2132 | return ret; |
2133 | } | |
2134 | } | |
2135 | ||
2136 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2137 | out: |
7cc302d2 | 2138 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2139 | cpu_dai->name); |
2140 | return ret; | |
2141 | } | |
01d7584c LG |
2142 | |
2143 | /* is the current PCM operation for this FE ? */ | |
2144 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2145 | { | |
2146 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2147 | return 1; | |
2148 | return 0; | |
2149 | } | |
2150 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2151 | ||
2152 | /* is the current PCM operation for this BE ? */ | |
2153 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2154 | struct snd_soc_pcm_runtime *be, int stream) | |
2155 | { | |
2156 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2157 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2158 | be->dpcm[stream].runtime_update)) | |
2159 | return 1; | |
2160 | return 0; | |
2161 | } | |
2162 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2163 | ||
2164 | /* get the substream for this BE */ | |
2165 | struct snd_pcm_substream * | |
2166 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2167 | { | |
2168 | return be->pcm->streams[stream].substream; | |
2169 | } | |
2170 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2171 | ||
2172 | /* get the BE runtime state */ | |
2173 | enum snd_soc_dpcm_state | |
2174 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2175 | { | |
2176 | return be->dpcm[stream].state; | |
2177 | } | |
2178 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2179 | ||
2180 | /* set the BE runtime state */ | |
2181 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2182 | int stream, enum snd_soc_dpcm_state state) | |
2183 | { | |
2184 | be->dpcm[stream].state = state; | |
2185 | } | |
2186 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2187 | ||
2188 | /* | |
2189 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2190 | * are not running, paused or suspended for the specified stream direction. | |
2191 | */ | |
2192 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2193 | struct snd_soc_pcm_runtime *be, int stream) | |
2194 | { | |
2195 | struct snd_soc_dpcm *dpcm; | |
2196 | int state; | |
2197 | ||
2198 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2199 | ||
2200 | if (dpcm->fe == fe) | |
2201 | continue; | |
2202 | ||
2203 | state = dpcm->fe->dpcm[stream].state; | |
2204 | if (state == SND_SOC_DPCM_STATE_START || | |
2205 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2206 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2207 | return 0; | |
2208 | } | |
2209 | ||
2210 | /* it's safe to free/stop this BE DAI */ | |
2211 | return 1; | |
2212 | } | |
2213 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2214 | ||
2215 | /* | |
2216 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2217 | * running, paused or suspended for the specified stream direction. | |
2218 | */ | |
2219 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2220 | struct snd_soc_pcm_runtime *be, int stream) | |
2221 | { | |
2222 | struct snd_soc_dpcm *dpcm; | |
2223 | int state; | |
2224 | ||
2225 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2226 | ||
2227 | if (dpcm->fe == fe) | |
2228 | continue; | |
2229 | ||
2230 | state = dpcm->fe->dpcm[stream].state; | |
2231 | if (state == SND_SOC_DPCM_STATE_START || | |
2232 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2233 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2234 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | /* it's safe to change hw_params */ | |
2239 | return 1; | |
2240 | } | |
2241 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2242 | |
07bf84aa LG |
2243 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2244 | int cmd, struct snd_soc_platform *platform) | |
2245 | { | |
c5914b0a | 2246 | if (platform->driver->ops && platform->driver->ops->trigger) |
07bf84aa LG |
2247 | return platform->driver->ops->trigger(substream, cmd); |
2248 | return 0; | |
2249 | } | |
2250 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2251 | ||
f86dcef8 LG |
2252 | #ifdef CONFIG_DEBUG_FS |
2253 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2254 | { | |
2255 | switch (state) { | |
2256 | case SND_SOC_DPCM_STATE_NEW: | |
2257 | return "new"; | |
2258 | case SND_SOC_DPCM_STATE_OPEN: | |
2259 | return "open"; | |
2260 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2261 | return "hw_params"; | |
2262 | case SND_SOC_DPCM_STATE_PREPARE: | |
2263 | return "prepare"; | |
2264 | case SND_SOC_DPCM_STATE_START: | |
2265 | return "start"; | |
2266 | case SND_SOC_DPCM_STATE_STOP: | |
2267 | return "stop"; | |
2268 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2269 | return "suspend"; | |
2270 | case SND_SOC_DPCM_STATE_PAUSED: | |
2271 | return "paused"; | |
2272 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2273 | return "hw_free"; | |
2274 | case SND_SOC_DPCM_STATE_CLOSE: | |
2275 | return "close"; | |
2276 | } | |
2277 | ||
2278 | return "unknown"; | |
2279 | } | |
2280 | ||
f86dcef8 LG |
2281 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2282 | int stream, char *buf, size_t size) | |
2283 | { | |
2284 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2285 | struct snd_soc_dpcm *dpcm; | |
2286 | ssize_t offset = 0; | |
2287 | ||
2288 | /* FE state */ | |
2289 | offset += snprintf(buf + offset, size - offset, | |
2290 | "[%s - %s]\n", fe->dai_link->name, | |
2291 | stream ? "Capture" : "Playback"); | |
2292 | ||
2293 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2294 | dpcm_state_string(fe->dpcm[stream].state)); | |
2295 | ||
2296 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2297 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2298 | offset += snprintf(buf + offset, size - offset, | |
2299 | "Hardware Params: " | |
2300 | "Format = %s, Channels = %d, Rate = %d\n", | |
2301 | snd_pcm_format_name(params_format(params)), | |
2302 | params_channels(params), | |
2303 | params_rate(params)); | |
2304 | ||
2305 | /* BEs state */ | |
2306 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2307 | ||
2308 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2309 | offset += snprintf(buf + offset, size - offset, | |
2310 | " No active DSP links\n"); | |
2311 | goto out; | |
2312 | } | |
2313 | ||
2314 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2315 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2316 | params = &dpcm->hw_params; | |
2317 | ||
2318 | offset += snprintf(buf + offset, size - offset, | |
2319 | "- %s\n", be->dai_link->name); | |
2320 | ||
2321 | offset += snprintf(buf + offset, size - offset, | |
2322 | " State: %s\n", | |
2323 | dpcm_state_string(be->dpcm[stream].state)); | |
2324 | ||
2325 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2326 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2327 | offset += snprintf(buf + offset, size - offset, | |
2328 | " Hardware Params: " | |
2329 | "Format = %s, Channels = %d, Rate = %d\n", | |
2330 | snd_pcm_format_name(params_format(params)), | |
2331 | params_channels(params), | |
2332 | params_rate(params)); | |
2333 | } | |
2334 | ||
2335 | out: | |
2336 | return offset; | |
2337 | } | |
2338 | ||
2339 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2340 | size_t count, loff_t *ppos) | |
2341 | { | |
2342 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2343 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2344 | char *buf; | |
2345 | ||
2346 | buf = kmalloc(out_count, GFP_KERNEL); | |
2347 | if (!buf) | |
2348 | return -ENOMEM; | |
2349 | ||
2350 | if (fe->cpu_dai->driver->playback.channels_min) | |
2351 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2352 | buf + offset, out_count - offset); | |
2353 | ||
2354 | if (fe->cpu_dai->driver->capture.channels_min) | |
2355 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2356 | buf + offset, out_count - offset); | |
2357 | ||
f57b8488 | 2358 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2359 | |
f57b8488 LG |
2360 | kfree(buf); |
2361 | return ret; | |
f86dcef8 LG |
2362 | } |
2363 | ||
2364 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2365 | .open = simple_open, |
f86dcef8 LG |
2366 | .read = dpcm_state_read_file, |
2367 | .llseek = default_llseek, | |
2368 | }; | |
2369 | ||
2370 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2371 | { | |
b3bba9a1 MB |
2372 | if (!rtd->dai_link) |
2373 | return 0; | |
2374 | ||
f86dcef8 LG |
2375 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2376 | rtd->card->debugfs_card_root); | |
2377 | if (!rtd->debugfs_dpcm_root) { | |
2378 | dev_dbg(rtd->dev, | |
2379 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2380 | rtd->dai_link->name); | |
2381 | return -EINVAL; | |
2382 | } | |
2383 | ||
f57b8488 | 2384 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2385 | rtd->debugfs_dpcm_root, |
2386 | rtd, &dpcm_state_fops); | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | #endif |