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 | ||
78e45c99 | 151 | static void soc_pcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
bd477c31 LPC |
152 | struct snd_soc_pcm_stream *codec_stream, |
153 | struct snd_soc_pcm_stream *cpu_stream) | |
154 | { | |
78e45c99 LPC |
155 | struct snd_pcm_hardware *hw = &runtime->hw; |
156 | ||
bd477c31 LPC |
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; | |
78e45c99 LPC |
169 | |
170 | snd_pcm_limit_hw_rates(runtime); | |
171 | ||
172 | hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); | |
173 | hw->rate_min = max(hw->rate_min, codec_stream->rate_min); | |
174 | hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); | |
175 | hw->rate_max = min_not_zero(hw->rate_max, codec_stream->rate_max); | |
bd477c31 LPC |
176 | } |
177 | ||
ddee627c LG |
178 | /* |
179 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
180 | * then initialized and any private data can be allocated. This also calls | |
181 | * startup for the cpu DAI, platform, machine and codec DAI. | |
182 | */ | |
183 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
184 | { | |
185 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
186 | struct snd_pcm_runtime *runtime = substream->runtime; | |
187 | struct snd_soc_platform *platform = rtd->platform; | |
188 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
189 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
190 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
191 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
192 | int ret = 0; | |
193 | ||
988e8cc4 NC |
194 | pinctrl_pm_select_default_state(cpu_dai->dev); |
195 | pinctrl_pm_select_default_state(codec_dai->dev); | |
d6652ef8 MB |
196 | pm_runtime_get_sync(cpu_dai->dev); |
197 | pm_runtime_get_sync(codec_dai->dev); | |
198 | pm_runtime_get_sync(platform->dev); | |
199 | ||
b8c0dab9 | 200 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
201 | |
202 | /* startup the audio subsystem */ | |
c5914b0a | 203 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) { |
ddee627c LG |
204 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
205 | if (ret < 0) { | |
103d84a3 LG |
206 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
207 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
208 | goto out; |
209 | } | |
210 | } | |
211 | ||
212 | if (platform->driver->ops && platform->driver->ops->open) { | |
213 | ret = platform->driver->ops->open(substream); | |
214 | if (ret < 0) { | |
103d84a3 LG |
215 | dev_err(platform->dev, "ASoC: can't open platform" |
216 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
217 | goto platform_err; |
218 | } | |
219 | } | |
220 | ||
c5914b0a | 221 | if (codec_dai->driver->ops && codec_dai->driver->ops->startup) { |
ddee627c LG |
222 | ret = codec_dai->driver->ops->startup(substream, codec_dai); |
223 | if (ret < 0) { | |
103d84a3 LG |
224 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
225 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
226 | goto codec_dai_err; |
227 | } | |
228 | } | |
229 | ||
230 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
231 | ret = rtd->dai_link->ops->startup(substream); | |
232 | if (ret < 0) { | |
103d84a3 | 233 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 234 | rtd->dai_link->name, ret); |
ddee627c LG |
235 | goto machine_err; |
236 | } | |
237 | } | |
238 | ||
01d7584c LG |
239 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
240 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
241 | goto dynamic; | |
242 | ||
ddee627c LG |
243 | /* Check that the codec and cpu DAIs are compatible */ |
244 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
78e45c99 | 245 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->playback, |
bd477c31 | 246 | &cpu_dai_drv->playback); |
ddee627c | 247 | } else { |
78e45c99 | 248 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->capture, |
bd477c31 | 249 | &cpu_dai_drv->capture); |
ddee627c LG |
250 | } |
251 | ||
252 | ret = -EINVAL; | |
ddee627c | 253 | if (!runtime->hw.rates) { |
103d84a3 | 254 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
255 | codec_dai->name, cpu_dai->name); |
256 | goto config_err; | |
257 | } | |
258 | if (!runtime->hw.formats) { | |
103d84a3 | 259 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
260 | codec_dai->name, cpu_dai->name); |
261 | goto config_err; | |
262 | } | |
263 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
264 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 265 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
266 | codec_dai->name, cpu_dai->name); |
267 | goto config_err; | |
268 | } | |
269 | ||
58ba9b25 MB |
270 | soc_pcm_apply_msb(substream, codec_dai); |
271 | soc_pcm_apply_msb(substream, cpu_dai); | |
272 | ||
ddee627c | 273 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
274 | if (cpu_dai->active) { |
275 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
276 | if (ret != 0) | |
277 | goto config_err; | |
278 | } | |
279 | ||
280 | if (codec_dai->active) { | |
281 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
282 | if (ret != 0) |
283 | goto config_err; | |
284 | } | |
285 | ||
103d84a3 | 286 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 287 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
288 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
289 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 290 | runtime->hw.channels_max); |
103d84a3 | 291 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
292 | runtime->hw.rate_max); |
293 | ||
01d7584c | 294 | dynamic: |
ddee627c LG |
295 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
296 | cpu_dai->playback_active++; | |
297 | codec_dai->playback_active++; | |
298 | } else { | |
299 | cpu_dai->capture_active++; | |
300 | codec_dai->capture_active++; | |
301 | } | |
302 | cpu_dai->active++; | |
303 | codec_dai->active++; | |
304 | rtd->codec->active++; | |
b8c0dab9 | 305 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
306 | return 0; |
307 | ||
308 | config_err: | |
309 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
310 | rtd->dai_link->ops->shutdown(substream); | |
311 | ||
312 | machine_err: | |
313 | if (codec_dai->driver->ops->shutdown) | |
314 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
315 | ||
316 | codec_dai_err: | |
317 | if (platform->driver->ops && platform->driver->ops->close) | |
318 | platform->driver->ops->close(substream); | |
319 | ||
320 | platform_err: | |
321 | if (cpu_dai->driver->ops->shutdown) | |
322 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
323 | out: | |
b8c0dab9 | 324 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
325 | |
326 | pm_runtime_put(platform->dev); | |
327 | pm_runtime_put(codec_dai->dev); | |
328 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
329 | if (!codec_dai->active) |
330 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
331 | if (!cpu_dai->active) | |
332 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 333 | |
ddee627c LG |
334 | return ret; |
335 | } | |
336 | ||
337 | /* | |
338 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
339 | * This is to ensure there are no pops or clicks in between any music tracks | |
340 | * due to DAPM power cycling. | |
341 | */ | |
342 | static void close_delayed_work(struct work_struct *work) | |
343 | { | |
344 | struct snd_soc_pcm_runtime *rtd = | |
345 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
346 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
347 | ||
b8c0dab9 | 348 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 349 | |
103d84a3 | 350 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
351 | codec_dai->driver->playback.stream_name, |
352 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 353 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
354 | |
355 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
356 | if (rtd->pop_wait == 1) { |
357 | rtd->pop_wait = 0; | |
7bd3a6f3 | 358 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 359 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
360 | } |
361 | ||
b8c0dab9 | 362 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
363 | } |
364 | ||
365 | /* | |
366 | * Called by ALSA when a PCM substream is closed. Private data can be | |
367 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
368 | * shutdown. | |
369 | */ | |
91d5e6b4 | 370 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
371 | { |
372 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
373 | struct snd_soc_platform *platform = rtd->platform; | |
374 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
375 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
376 | struct snd_soc_codec *codec = rtd->codec; | |
377 | ||
b8c0dab9 | 378 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
379 | |
380 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
381 | cpu_dai->playback_active--; | |
382 | codec_dai->playback_active--; | |
383 | } else { | |
384 | cpu_dai->capture_active--; | |
385 | codec_dai->capture_active--; | |
386 | } | |
387 | ||
388 | cpu_dai->active--; | |
389 | codec_dai->active--; | |
390 | codec->active--; | |
391 | ||
17841020 DA |
392 | /* clear the corresponding DAIs rate when inactive */ |
393 | if (!cpu_dai->active) | |
394 | cpu_dai->rate = 0; | |
395 | ||
396 | if (!codec_dai->active) | |
397 | codec_dai->rate = 0; | |
25b76791 | 398 | |
ddee627c LG |
399 | /* Muting the DAC suppresses artifacts caused during digital |
400 | * shutdown, for example from stopping clocks. | |
401 | */ | |
da18396f | 402 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
403 | |
404 | if (cpu_dai->driver->ops->shutdown) | |
405 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
406 | ||
407 | if (codec_dai->driver->ops->shutdown) | |
408 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
409 | ||
410 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
411 | rtd->dai_link->ops->shutdown(substream); | |
412 | ||
413 | if (platform->driver->ops && platform->driver->ops->close) | |
414 | platform->driver->ops->close(substream); | |
415 | cpu_dai->runtime = NULL; | |
416 | ||
417 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 418 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 419 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
420 | /* powered down playback stream now */ |
421 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 422 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 423 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
424 | } else { |
425 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 426 | rtd->pop_wait = 1; |
d4e1a73a MB |
427 | queue_delayed_work(system_power_efficient_wq, |
428 | &rtd->delayed_work, | |
429 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 430 | } |
ddee627c LG |
431 | } else { |
432 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 433 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 434 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
435 | } |
436 | ||
b8c0dab9 | 437 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
438 | |
439 | pm_runtime_put(platform->dev); | |
440 | pm_runtime_put(codec_dai->dev); | |
441 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
442 | if (!codec_dai->active) |
443 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
444 | if (!cpu_dai->active) | |
445 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 446 | |
ddee627c LG |
447 | return 0; |
448 | } | |
449 | ||
450 | /* | |
451 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
452 | * rate, etc. This function is non atomic and can be called multiple times, | |
453 | * it can refer to the runtime info. | |
454 | */ | |
455 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
456 | { | |
457 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
458 | struct snd_soc_platform *platform = rtd->platform; | |
459 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
460 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
461 | int ret = 0; | |
462 | ||
b8c0dab9 | 463 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
464 | |
465 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
466 | ret = rtd->dai_link->ops->prepare(substream); | |
467 | if (ret < 0) { | |
103d84a3 LG |
468 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
469 | " %d\n", ret); | |
ddee627c LG |
470 | goto out; |
471 | } | |
472 | } | |
473 | ||
474 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
475 | ret = platform->driver->ops->prepare(substream); | |
476 | if (ret < 0) { | |
103d84a3 LG |
477 | dev_err(platform->dev, "ASoC: platform prepare error:" |
478 | " %d\n", ret); | |
ddee627c LG |
479 | goto out; |
480 | } | |
481 | } | |
482 | ||
c5914b0a | 483 | if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) { |
ddee627c LG |
484 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); |
485 | if (ret < 0) { | |
103d84a3 | 486 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 487 | ret); |
ddee627c LG |
488 | goto out; |
489 | } | |
490 | } | |
491 | ||
c5914b0a | 492 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) { |
ddee627c LG |
493 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
494 | if (ret < 0) { | |
103d84a3 | 495 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 496 | ret); |
ddee627c LG |
497 | goto out; |
498 | } | |
499 | } | |
500 | ||
501 | /* cancel any delayed stream shutdown that is pending */ | |
502 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
503 | rtd->pop_wait) { |
504 | rtd->pop_wait = 0; | |
ddee627c LG |
505 | cancel_delayed_work(&rtd->delayed_work); |
506 | } | |
507 | ||
d9b0951b LG |
508 | snd_soc_dapm_stream_event(rtd, substream->stream, |
509 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 510 | |
da18396f | 511 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
512 | |
513 | out: | |
b8c0dab9 | 514 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
515 | return ret; |
516 | } | |
517 | ||
518 | /* | |
519 | * Called by ALSA when the hardware params are set by application. This | |
520 | * function can also be called multiple times and can allocate buffers | |
521 | * (using snd_pcm_lib_* ). It's non-atomic. | |
522 | */ | |
523 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
524 | struct snd_pcm_hw_params *params) | |
525 | { | |
526 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
527 | struct snd_soc_platform *platform = rtd->platform; | |
528 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
529 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
530 | int ret = 0; | |
531 | ||
b8c0dab9 | 532 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
533 | |
534 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
535 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
536 | if (ret < 0) { | |
103d84a3 LG |
537 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
538 | " failed: %d\n", ret); | |
ddee627c LG |
539 | goto out; |
540 | } | |
541 | } | |
542 | ||
c5914b0a | 543 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_params) { |
ddee627c LG |
544 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); |
545 | if (ret < 0) { | |
103d84a3 LG |
546 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
547 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
548 | goto codec_err; |
549 | } | |
550 | } | |
551 | ||
c5914b0a | 552 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_params) { |
ddee627c LG |
553 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); |
554 | if (ret < 0) { | |
103d84a3 | 555 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 556 | cpu_dai->name, ret); |
ddee627c LG |
557 | goto interface_err; |
558 | } | |
559 | } | |
560 | ||
561 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
562 | ret = platform->driver->ops->hw_params(substream, params); | |
563 | if (ret < 0) { | |
103d84a3 | 564 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 565 | platform->name, ret); |
ddee627c LG |
566 | goto platform_err; |
567 | } | |
568 | } | |
569 | ||
17841020 DA |
570 | /* store the rate for each DAIs */ |
571 | cpu_dai->rate = params_rate(params); | |
572 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
573 | |
574 | out: | |
b8c0dab9 | 575 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
576 | return ret; |
577 | ||
578 | platform_err: | |
c5914b0a | 579 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
580 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
581 | ||
582 | interface_err: | |
c5914b0a | 583 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
584 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
585 | ||
586 | codec_err: | |
587 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
588 | rtd->dai_link->ops->hw_free(substream); | |
589 | ||
b8c0dab9 | 590 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
591 | return ret; |
592 | } | |
593 | ||
594 | /* | |
595 | * Frees resources allocated by hw_params, can be called multiple times | |
596 | */ | |
597 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
598 | { | |
599 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
600 | struct snd_soc_platform *platform = rtd->platform; | |
601 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
602 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
603 | struct snd_soc_codec *codec = rtd->codec; | |
604 | ||
b8c0dab9 | 605 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
606 | |
607 | /* apply codec digital mute */ | |
608 | if (!codec->active) | |
da18396f | 609 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
610 | |
611 | /* free any machine hw params */ | |
612 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
613 | rtd->dai_link->ops->hw_free(substream); | |
614 | ||
615 | /* free any DMA resources */ | |
616 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
617 | platform->driver->ops->hw_free(substream); | |
618 | ||
619 | /* now free hw params for the DAIs */ | |
c5914b0a | 620 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
621 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
622 | ||
c5914b0a | 623 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
624 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
625 | ||
b8c0dab9 | 626 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
627 | return 0; |
628 | } | |
629 | ||
630 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
631 | { | |
632 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
633 | struct snd_soc_platform *platform = rtd->platform; | |
634 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
635 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
636 | int ret; | |
637 | ||
c5914b0a | 638 | if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) { |
ddee627c LG |
639 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); |
640 | if (ret < 0) | |
641 | return ret; | |
642 | } | |
643 | ||
644 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
645 | ret = platform->driver->ops->trigger(substream, cmd); | |
646 | if (ret < 0) | |
647 | return ret; | |
648 | } | |
649 | ||
c5914b0a | 650 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) { |
ddee627c LG |
651 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
652 | if (ret < 0) | |
653 | return ret; | |
654 | } | |
655 | return 0; | |
656 | } | |
657 | ||
45c0a188 MB |
658 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
659 | int cmd) | |
07bf84aa LG |
660 | { |
661 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
662 | struct snd_soc_platform *platform = rtd->platform; | |
663 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
664 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
665 | int ret; | |
666 | ||
c5914b0a MB |
667 | if (codec_dai->driver->ops && |
668 | codec_dai->driver->ops->bespoke_trigger) { | |
07bf84aa LG |
669 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); |
670 | if (ret < 0) | |
671 | return ret; | |
672 | } | |
673 | ||
c5914b0a | 674 | if (platform->driver->ops && platform->driver->bespoke_trigger) { |
07bf84aa LG |
675 | ret = platform->driver->bespoke_trigger(substream, cmd); |
676 | if (ret < 0) | |
677 | return ret; | |
678 | } | |
679 | ||
c5914b0a | 680 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) { |
07bf84aa LG |
681 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); |
682 | if (ret < 0) | |
683 | return ret; | |
684 | } | |
685 | return 0; | |
686 | } | |
ddee627c LG |
687 | /* |
688 | * soc level wrapper for pointer callback | |
689 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
690 | * the runtime->delay will be updated accordingly. | |
691 | */ | |
692 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
693 | { | |
694 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
695 | struct snd_soc_platform *platform = rtd->platform; | |
696 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
697 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
698 | struct snd_pcm_runtime *runtime = substream->runtime; | |
699 | snd_pcm_uframes_t offset = 0; | |
700 | snd_pcm_sframes_t delay = 0; | |
701 | ||
702 | if (platform->driver->ops && platform->driver->ops->pointer) | |
703 | offset = platform->driver->ops->pointer(substream); | |
704 | ||
c5914b0a | 705 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay) |
ddee627c LG |
706 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
707 | ||
c5914b0a | 708 | if (codec_dai->driver->ops && codec_dai->driver->ops->delay) |
ddee627c LG |
709 | delay += codec_dai->driver->ops->delay(substream, codec_dai); |
710 | ||
711 | if (platform->driver->delay) | |
712 | delay += platform->driver->delay(substream, codec_dai); | |
713 | ||
714 | runtime->delay = delay; | |
715 | ||
716 | return offset; | |
717 | } | |
718 | ||
01d7584c LG |
719 | /* connect a FE and BE */ |
720 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
721 | struct snd_soc_pcm_runtime *be, int stream) | |
722 | { | |
723 | struct snd_soc_dpcm *dpcm; | |
724 | ||
725 | /* only add new dpcms */ | |
726 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
727 | if (dpcm->be == be && dpcm->fe == fe) | |
728 | return 0; | |
729 | } | |
730 | ||
731 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
732 | if (!dpcm) | |
733 | return -ENOMEM; | |
734 | ||
735 | dpcm->be = be; | |
736 | dpcm->fe = fe; | |
737 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
738 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
739 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
740 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
741 | ||
7cc302d2 | 742 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
743 | stream ? "capture" : "playback", fe->dai_link->name, |
744 | stream ? "<-" : "->", be->dai_link->name); | |
745 | ||
f86dcef8 LG |
746 | #ifdef CONFIG_DEBUG_FS |
747 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
748 | fe->debugfs_dpcm_root, &dpcm->state); | |
749 | #endif | |
01d7584c LG |
750 | return 1; |
751 | } | |
752 | ||
753 | /* reparent a BE onto another FE */ | |
754 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
755 | struct snd_soc_pcm_runtime *be, int stream) | |
756 | { | |
757 | struct snd_soc_dpcm *dpcm; | |
758 | struct snd_pcm_substream *fe_substream, *be_substream; | |
759 | ||
760 | /* reparent if BE is connected to other FEs */ | |
761 | if (!be->dpcm[stream].users) | |
762 | return; | |
763 | ||
764 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
765 | ||
766 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
767 | if (dpcm->fe == fe) | |
768 | continue; | |
769 | ||
7cc302d2 | 770 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
771 | stream ? "capture" : "playback", |
772 | dpcm->fe->dai_link->name, | |
773 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
774 | ||
775 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
776 | be_substream->runtime = fe_substream->runtime; | |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
781 | /* disconnect a BE and FE */ | |
782 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
783 | { | |
784 | struct snd_soc_dpcm *dpcm, *d; | |
785 | ||
786 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 787 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
788 | stream ? "capture" : "playback", |
789 | dpcm->be->dai_link->name); | |
790 | ||
791 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
792 | continue; | |
793 | ||
7cc302d2 | 794 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
795 | stream ? "capture" : "playback", fe->dai_link->name, |
796 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
797 | ||
798 | /* BEs still alive need new FE */ | |
799 | dpcm_be_reparent(fe, dpcm->be, stream); | |
800 | ||
f86dcef8 LG |
801 | #ifdef CONFIG_DEBUG_FS |
802 | debugfs_remove(dpcm->debugfs_state); | |
803 | #endif | |
01d7584c LG |
804 | list_del(&dpcm->list_be); |
805 | list_del(&dpcm->list_fe); | |
806 | kfree(dpcm); | |
807 | } | |
808 | } | |
809 | ||
810 | /* get BE for DAI widget and stream */ | |
811 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
812 | struct snd_soc_dapm_widget *widget, int stream) | |
813 | { | |
814 | struct snd_soc_pcm_runtime *be; | |
815 | int i; | |
816 | ||
817 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
818 | for (i = 0; i < card->num_links; i++) { | |
819 | be = &card->rtd[i]; | |
820 | ||
35ea0655 LG |
821 | if (!be->dai_link->no_pcm) |
822 | continue; | |
823 | ||
01d7584c LG |
824 | if (be->cpu_dai->playback_widget == widget || |
825 | be->codec_dai->playback_widget == widget) | |
826 | return be; | |
827 | } | |
828 | } else { | |
829 | ||
830 | for (i = 0; i < card->num_links; i++) { | |
831 | be = &card->rtd[i]; | |
832 | ||
35ea0655 LG |
833 | if (!be->dai_link->no_pcm) |
834 | continue; | |
835 | ||
01d7584c LG |
836 | if (be->cpu_dai->capture_widget == widget || |
837 | be->codec_dai->capture_widget == widget) | |
838 | return be; | |
839 | } | |
840 | } | |
841 | ||
103d84a3 | 842 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
843 | stream ? "capture" : "playback", widget->name); |
844 | return NULL; | |
845 | } | |
846 | ||
847 | static inline struct snd_soc_dapm_widget * | |
848 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
849 | { | |
850 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
851 | return rtd->cpu_dai->playback_widget; | |
852 | else | |
853 | return rtd->cpu_dai->capture_widget; | |
854 | } | |
855 | ||
856 | static inline struct snd_soc_dapm_widget * | |
857 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
858 | { | |
859 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
860 | return rtd->codec_dai->playback_widget; | |
861 | else | |
862 | return rtd->codec_dai->capture_widget; | |
863 | } | |
864 | ||
865 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
866 | struct snd_soc_dapm_widget *widget) | |
867 | { | |
868 | int i; | |
869 | ||
870 | for (i = 0; i < list->num_widgets; i++) { | |
871 | if (widget == list->widgets[i]) | |
872 | return 1; | |
873 | } | |
874 | ||
875 | return 0; | |
876 | } | |
877 | ||
878 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
879 | int stream, struct snd_soc_dapm_widget_list **list_) | |
880 | { | |
881 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
882 | struct snd_soc_dapm_widget_list *list; | |
883 | int paths; | |
884 | ||
885 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
886 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
887 | if (list == NULL) | |
888 | return -ENOMEM; | |
889 | ||
890 | /* get number of valid DAI paths and their widgets */ | |
891 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
892 | ||
103d84a3 | 893 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
894 | stream ? "capture" : "playback"); |
895 | ||
896 | *list_ = list; | |
897 | return paths; | |
898 | } | |
899 | ||
900 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
901 | { | |
902 | kfree(*list); | |
903 | } | |
904 | ||
905 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
906 | struct snd_soc_dapm_widget_list **list_) | |
907 | { | |
908 | struct snd_soc_dpcm *dpcm; | |
909 | struct snd_soc_dapm_widget_list *list = *list_; | |
910 | struct snd_soc_dapm_widget *widget; | |
911 | int prune = 0; | |
912 | ||
913 | /* Destroy any old FE <--> BE connections */ | |
914 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
915 | ||
916 | /* is there a valid CPU DAI widget for this BE */ | |
917 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
918 | ||
919 | /* prune the BE if it's no longer in our active list */ | |
920 | if (widget && widget_in_list(list, widget)) | |
921 | continue; | |
922 | ||
923 | /* is there a valid CODEC DAI widget for this BE */ | |
924 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
925 | ||
926 | /* prune the BE if it's no longer in our active list */ | |
927 | if (widget && widget_in_list(list, widget)) | |
928 | continue; | |
929 | ||
103d84a3 | 930 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
931 | stream ? "capture" : "playback", |
932 | dpcm->be->dai_link->name, fe->dai_link->name); | |
933 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
934 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
935 | prune++; | |
936 | } | |
937 | ||
103d84a3 | 938 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
939 | return prune; |
940 | } | |
941 | ||
942 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
943 | struct snd_soc_dapm_widget_list **list_) | |
944 | { | |
945 | struct snd_soc_card *card = fe->card; | |
946 | struct snd_soc_dapm_widget_list *list = *list_; | |
947 | struct snd_soc_pcm_runtime *be; | |
948 | int i, new = 0, err; | |
949 | ||
950 | /* Create any new FE <--> BE connections */ | |
951 | for (i = 0; i < list->num_widgets; i++) { | |
952 | ||
4616274d MB |
953 | switch (list->widgets[i]->id) { |
954 | case snd_soc_dapm_dai_in: | |
955 | case snd_soc_dapm_dai_out: | |
956 | break; | |
957 | default: | |
01d7584c | 958 | continue; |
4616274d | 959 | } |
01d7584c LG |
960 | |
961 | /* is there a valid BE rtd for this widget */ | |
962 | be = dpcm_get_be(card, list->widgets[i], stream); | |
963 | if (!be) { | |
103d84a3 | 964 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
965 | list->widgets[i]->name); |
966 | continue; | |
967 | } | |
968 | ||
969 | /* make sure BE is a real BE */ | |
970 | if (!be->dai_link->no_pcm) | |
971 | continue; | |
972 | ||
973 | /* don't connect if FE is not running */ | |
974 | if (!fe->dpcm[stream].runtime) | |
975 | continue; | |
976 | ||
977 | /* newly connected FE and BE */ | |
978 | err = dpcm_be_connect(fe, be, stream); | |
979 | if (err < 0) { | |
103d84a3 | 980 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
981 | list->widgets[i]->name); |
982 | break; | |
983 | } else if (err == 0) /* already connected */ | |
984 | continue; | |
985 | ||
986 | /* new */ | |
987 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
988 | new++; | |
989 | } | |
990 | ||
103d84a3 | 991 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
992 | return new; |
993 | } | |
994 | ||
995 | /* | |
996 | * Find the corresponding BE DAIs that source or sink audio to this | |
997 | * FE substream. | |
998 | */ | |
999 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
1000 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
1001 | { | |
1002 | if (new) | |
1003 | return dpcm_add_paths(fe, stream, list); | |
1004 | else | |
1005 | return dpcm_prune_paths(fe, stream, list); | |
1006 | } | |
1007 | ||
1008 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
1009 | { | |
1010 | struct snd_soc_dpcm *dpcm; | |
1011 | ||
1012 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1013 | dpcm->be->dpcm[stream].runtime_update = | |
1014 | SND_SOC_DPCM_UPDATE_NO; | |
1015 | } | |
1016 | ||
1017 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1018 | int stream) | |
1019 | { | |
1020 | struct snd_soc_dpcm *dpcm; | |
1021 | ||
1022 | /* disable any enabled and non active backends */ | |
1023 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1024 | ||
1025 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1026 | struct snd_pcm_substream *be_substream = | |
1027 | snd_soc_dpcm_get_substream(be, stream); | |
1028 | ||
1029 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1030 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1031 | stream ? "capture" : "playback", |
1032 | be->dpcm[stream].state); | |
1033 | ||
1034 | if (--be->dpcm[stream].users != 0) | |
1035 | continue; | |
1036 | ||
1037 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1038 | continue; | |
1039 | ||
1040 | soc_pcm_close(be_substream); | |
1041 | be_substream->runtime = NULL; | |
1042 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1047 | { | |
1048 | struct snd_soc_dpcm *dpcm; | |
1049 | int err, count = 0; | |
1050 | ||
1051 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1052 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1053 | ||
1054 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1055 | struct snd_pcm_substream *be_substream = | |
1056 | snd_soc_dpcm_get_substream(be, stream); | |
1057 | ||
2062b4c5 RKAL |
1058 | if (!be_substream) { |
1059 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1060 | stream ? "capture" : "playback"); | |
1061 | continue; | |
1062 | } | |
1063 | ||
01d7584c LG |
1064 | /* is this op for this BE ? */ |
1065 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1066 | continue; | |
1067 | ||
1068 | /* first time the dpcm is open ? */ | |
1069 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1070 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1071 | stream ? "capture" : "playback", |
1072 | be->dpcm[stream].state); | |
1073 | ||
1074 | if (be->dpcm[stream].users++ != 0) | |
1075 | continue; | |
1076 | ||
1077 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1078 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1079 | continue; | |
1080 | ||
2062b4c5 RKAL |
1081 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1082 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c LG |
1083 | |
1084 | be_substream->runtime = be->dpcm[stream].runtime; | |
1085 | err = soc_pcm_open(be_substream); | |
1086 | if (err < 0) { | |
103d84a3 | 1087 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1088 | be->dpcm[stream].users--; |
1089 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1090 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1091 | stream ? "capture" : "playback", |
1092 | be->dpcm[stream].state); | |
1093 | ||
1094 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1095 | goto unwind; | |
1096 | } | |
1097 | ||
1098 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1099 | count++; | |
1100 | } | |
1101 | ||
1102 | return count; | |
1103 | ||
1104 | unwind: | |
1105 | /* disable any enabled and non active backends */ | |
1106 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1107 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1108 | struct snd_pcm_substream *be_substream = | |
1109 | snd_soc_dpcm_get_substream(be, stream); | |
1110 | ||
1111 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1112 | continue; | |
1113 | ||
1114 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1115 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1116 | stream ? "capture" : "playback", |
1117 | be->dpcm[stream].state); | |
1118 | ||
1119 | if (--be->dpcm[stream].users != 0) | |
1120 | continue; | |
1121 | ||
1122 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1123 | continue; | |
1124 | ||
1125 | soc_pcm_close(be_substream); | |
1126 | be_substream->runtime = NULL; | |
1127 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1128 | } | |
1129 | ||
1130 | return err; | |
1131 | } | |
1132 | ||
45c0a188 | 1133 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1134 | { |
1135 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1136 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1137 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1138 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1139 | ||
1140 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1141 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1142 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1143 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1144 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1145 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1146 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1147 | } else { | |
1148 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1149 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1150 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1151 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1152 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1153 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1158 | { | |
1159 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1160 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1161 | int stream = fe_substream->stream, ret = 0; | |
1162 | ||
1163 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1164 | ||
1165 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1166 | if (ret < 0) { | |
103d84a3 | 1167 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1168 | goto be_err; |
1169 | } | |
1170 | ||
103d84a3 | 1171 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1172 | |
1173 | /* start the DAI frontend */ | |
1174 | ret = soc_pcm_open(fe_substream); | |
1175 | if (ret < 0) { | |
103d84a3 | 1176 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1177 | goto unwind; |
1178 | } | |
1179 | ||
1180 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1181 | ||
1182 | dpcm_set_fe_runtime(fe_substream); | |
1183 | snd_pcm_limit_hw_rates(runtime); | |
1184 | ||
1185 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1186 | return 0; | |
1187 | ||
1188 | unwind: | |
1189 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1190 | be_err: | |
1191 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1192 | return ret; | |
1193 | } | |
1194 | ||
1195 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1196 | { | |
1197 | struct snd_soc_dpcm *dpcm; | |
1198 | ||
1199 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1200 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1201 | ||
1202 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1203 | struct snd_pcm_substream *be_substream = | |
1204 | snd_soc_dpcm_get_substream(be, stream); | |
1205 | ||
1206 | /* is this op for this BE ? */ | |
1207 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1208 | continue; | |
1209 | ||
1210 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1211 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1212 | stream ? "capture" : "playback", |
1213 | be->dpcm[stream].state); | |
1214 | ||
1215 | if (--be->dpcm[stream].users != 0) | |
1216 | continue; | |
1217 | ||
1218 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1219 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1220 | continue; | |
1221 | ||
103d84a3 | 1222 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1223 | dpcm->fe->dai_link->name); |
1224 | ||
1225 | soc_pcm_close(be_substream); | |
1226 | be_substream->runtime = NULL; | |
1227 | ||
1228 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1229 | } | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1234 | { | |
1235 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1236 | int stream = substream->stream; | |
1237 | ||
1238 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1239 | ||
1240 | /* shutdown the BEs */ | |
1241 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1242 | ||
103d84a3 | 1243 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1244 | |
1245 | /* now shutdown the frontend */ | |
1246 | soc_pcm_close(substream); | |
1247 | ||
1248 | /* run the stream event for each BE */ | |
1249 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1250 | ||
1251 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1252 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1257 | { | |
1258 | struct snd_soc_dpcm *dpcm; | |
1259 | ||
1260 | /* only hw_params backends that are either sinks or sources | |
1261 | * to this frontend DAI */ | |
1262 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1263 | ||
1264 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1265 | struct snd_pcm_substream *be_substream = | |
1266 | snd_soc_dpcm_get_substream(be, stream); | |
1267 | ||
1268 | /* is this op for this BE ? */ | |
1269 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1270 | continue; | |
1271 | ||
1272 | /* only free hw when no longer used - check all FEs */ | |
1273 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1274 | continue; | |
1275 | ||
1276 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1277 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1278 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1279 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1280 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1281 | continue; | |
1282 | ||
103d84a3 | 1283 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1284 | dpcm->fe->dai_link->name); |
1285 | ||
1286 | soc_pcm_hw_free(be_substream); | |
1287 | ||
1288 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1289 | } | |
1290 | ||
1291 | return 0; | |
1292 | } | |
1293 | ||
45c0a188 | 1294 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1295 | { |
1296 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1297 | int err, stream = substream->stream; | |
1298 | ||
1299 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1300 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1301 | ||
103d84a3 | 1302 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1303 | |
1304 | /* call hw_free on the frontend */ | |
1305 | err = soc_pcm_hw_free(substream); | |
1306 | if (err < 0) | |
103d84a3 | 1307 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1308 | fe->dai_link->name); |
1309 | ||
1310 | /* only hw_params backends that are either sinks or sources | |
1311 | * to this frontend DAI */ | |
1312 | err = dpcm_be_dai_hw_free(fe, stream); | |
1313 | ||
1314 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1315 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1316 | ||
1317 | mutex_unlock(&fe->card->mutex); | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1322 | { | |
1323 | struct snd_soc_dpcm *dpcm; | |
1324 | int ret; | |
1325 | ||
1326 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1327 | ||
1328 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1329 | struct snd_pcm_substream *be_substream = | |
1330 | snd_soc_dpcm_get_substream(be, stream); | |
1331 | ||
1332 | /* is this op for this BE ? */ | |
1333 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1334 | continue; | |
1335 | ||
1336 | /* only allow hw_params() if no connected FEs are running */ | |
1337 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1338 | continue; | |
1339 | ||
1340 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1341 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1342 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1343 | continue; | |
1344 | ||
103d84a3 | 1345 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1346 | dpcm->fe->dai_link->name); |
1347 | ||
1348 | /* copy params for each dpcm */ | |
1349 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1350 | sizeof(struct snd_pcm_hw_params)); | |
1351 | ||
1352 | /* perform any hw_params fixups */ | |
1353 | if (be->dai_link->be_hw_params_fixup) { | |
1354 | ret = be->dai_link->be_hw_params_fixup(be, | |
1355 | &dpcm->hw_params); | |
1356 | if (ret < 0) { | |
1357 | dev_err(be->dev, | |
103d84a3 | 1358 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1359 | ret); |
1360 | goto unwind; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1365 | if (ret < 0) { | |
1366 | dev_err(dpcm->be->dev, | |
103d84a3 | 1367 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1368 | goto unwind; |
1369 | } | |
1370 | ||
1371 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1372 | } | |
1373 | return 0; | |
1374 | ||
1375 | unwind: | |
1376 | /* disable any enabled and non active backends */ | |
1377 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1378 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1379 | struct snd_pcm_substream *be_substream = | |
1380 | snd_soc_dpcm_get_substream(be, stream); | |
1381 | ||
1382 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1383 | continue; | |
1384 | ||
1385 | /* only allow hw_free() if no connected FEs are running */ | |
1386 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1387 | continue; | |
1388 | ||
1389 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1390 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1391 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1392 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1393 | continue; | |
1394 | ||
1395 | soc_pcm_hw_free(be_substream); | |
1396 | } | |
1397 | ||
1398 | return ret; | |
1399 | } | |
1400 | ||
45c0a188 MB |
1401 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1402 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1403 | { |
1404 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1405 | int ret, stream = substream->stream; | |
1406 | ||
1407 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1408 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1409 | ||
1410 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1411 | sizeof(struct snd_pcm_hw_params)); | |
1412 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1413 | if (ret < 0) { | |
103d84a3 | 1414 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1415 | goto out; |
1416 | } | |
1417 | ||
103d84a3 | 1418 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1419 | fe->dai_link->name, params_rate(params), |
1420 | params_channels(params), params_format(params)); | |
1421 | ||
1422 | /* call hw_params on the frontend */ | |
1423 | ret = soc_pcm_hw_params(substream, params); | |
1424 | if (ret < 0) { | |
103d84a3 | 1425 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1426 | dpcm_be_dai_hw_free(fe, stream); |
1427 | } else | |
1428 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1429 | ||
1430 | out: | |
1431 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1432 | mutex_unlock(&fe->card->mutex); | |
1433 | return ret; | |
1434 | } | |
1435 | ||
1436 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1437 | struct snd_pcm_substream *substream, int cmd) | |
1438 | { | |
1439 | int ret; | |
1440 | ||
103d84a3 | 1441 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1442 | dpcm->fe->dai_link->name, cmd); |
1443 | ||
1444 | ret = soc_pcm_trigger(substream, cmd); | |
1445 | if (ret < 0) | |
103d84a3 | 1446 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1447 | |
1448 | return ret; | |
1449 | } | |
1450 | ||
45c0a188 MB |
1451 | static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
1452 | int cmd) | |
01d7584c LG |
1453 | { |
1454 | struct snd_soc_dpcm *dpcm; | |
1455 | int ret = 0; | |
1456 | ||
1457 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1458 | ||
1459 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1460 | struct snd_pcm_substream *be_substream = | |
1461 | snd_soc_dpcm_get_substream(be, stream); | |
1462 | ||
1463 | /* is this op for this BE ? */ | |
1464 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1465 | continue; | |
1466 | ||
1467 | switch (cmd) { | |
1468 | case SNDRV_PCM_TRIGGER_START: | |
1469 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1470 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1471 | continue; | |
1472 | ||
1473 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1474 | if (ret) | |
1475 | return ret; | |
1476 | ||
1477 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1478 | break; | |
1479 | case SNDRV_PCM_TRIGGER_RESUME: | |
1480 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1481 | continue; | |
1482 | ||
1483 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1484 | if (ret) | |
1485 | return ret; | |
1486 | ||
1487 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1488 | break; | |
1489 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1490 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1491 | continue; | |
1492 | ||
1493 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1494 | if (ret) | |
1495 | return ret; | |
1496 | ||
1497 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1498 | break; | |
1499 | case SNDRV_PCM_TRIGGER_STOP: | |
1500 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1501 | continue; | |
1502 | ||
1503 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1504 | continue; | |
1505 | ||
1506 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1507 | if (ret) | |
1508 | return ret; | |
1509 | ||
1510 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1511 | break; | |
1512 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1513 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1514 | continue; | |
1515 | ||
1516 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1517 | continue; | |
1518 | ||
1519 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1520 | if (ret) | |
1521 | return ret; | |
1522 | ||
1523 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1524 | break; | |
1525 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1526 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1527 | continue; | |
1528 | ||
1529 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1530 | continue; | |
1531 | ||
1532 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1533 | if (ret) | |
1534 | return ret; | |
1535 | ||
1536 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1537 | break; | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | return ret; | |
1542 | } | |
1543 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1544 | ||
45c0a188 | 1545 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1546 | { |
1547 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1548 | int stream = substream->stream, ret; | |
1549 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1550 | ||
1551 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1552 | ||
1553 | switch (trigger) { | |
1554 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1555 | /* call trigger on the frontend before the backend. */ | |
1556 | ||
103d84a3 | 1557 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1558 | fe->dai_link->name, cmd); |
1559 | ||
1560 | ret = soc_pcm_trigger(substream, cmd); | |
1561 | if (ret < 0) { | |
103d84a3 | 1562 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1563 | goto out; |
1564 | } | |
1565 | ||
1566 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1567 | break; | |
1568 | case SND_SOC_DPCM_TRIGGER_POST: | |
1569 | /* call trigger on the frontend after the backend. */ | |
1570 | ||
1571 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1572 | if (ret < 0) { | |
103d84a3 | 1573 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1574 | goto out; |
1575 | } | |
1576 | ||
103d84a3 | 1577 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1578 | fe->dai_link->name, cmd); |
1579 | ||
1580 | ret = soc_pcm_trigger(substream, cmd); | |
1581 | break; | |
07bf84aa LG |
1582 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1583 | /* bespoke trigger() - handles both FE and BEs */ | |
1584 | ||
103d84a3 | 1585 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1586 | fe->dai_link->name, cmd); |
1587 | ||
1588 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1589 | if (ret < 0) { | |
103d84a3 | 1590 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1591 | goto out; |
1592 | } | |
1593 | break; | |
01d7584c | 1594 | default: |
103d84a3 | 1595 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1596 | fe->dai_link->name); |
1597 | ret = -EINVAL; | |
1598 | goto out; | |
1599 | } | |
1600 | ||
1601 | switch (cmd) { | |
1602 | case SNDRV_PCM_TRIGGER_START: | |
1603 | case SNDRV_PCM_TRIGGER_RESUME: | |
1604 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1605 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1606 | break; | |
1607 | case SNDRV_PCM_TRIGGER_STOP: | |
1608 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1609 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1610 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1611 | break; | |
1612 | } | |
1613 | ||
1614 | out: | |
1615 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1616 | return ret; | |
1617 | } | |
1618 | ||
1619 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1620 | { | |
1621 | struct snd_soc_dpcm *dpcm; | |
1622 | int ret = 0; | |
1623 | ||
1624 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1625 | ||
1626 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1627 | struct snd_pcm_substream *be_substream = | |
1628 | snd_soc_dpcm_get_substream(be, stream); | |
1629 | ||
1630 | /* is this op for this BE ? */ | |
1631 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1632 | continue; | |
1633 | ||
1634 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1635 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1636 | continue; | |
1637 | ||
103d84a3 | 1638 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1639 | dpcm->fe->dai_link->name); |
1640 | ||
1641 | ret = soc_pcm_prepare(be_substream); | |
1642 | if (ret < 0) { | |
103d84a3 | 1643 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1644 | ret); |
1645 | break; | |
1646 | } | |
1647 | ||
1648 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1649 | } | |
1650 | return ret; | |
1651 | } | |
1652 | ||
45c0a188 | 1653 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1654 | { |
1655 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1656 | int stream = substream->stream, ret = 0; | |
1657 | ||
1658 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1659 | ||
103d84a3 | 1660 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1661 | |
1662 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1663 | ||
1664 | /* there is no point preparing this FE if there are no BEs */ | |
1665 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1666 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1667 | fe->dai_link->name); |
1668 | ret = -EINVAL; | |
1669 | goto out; | |
1670 | } | |
1671 | ||
1672 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1673 | if (ret < 0) | |
1674 | goto out; | |
1675 | ||
1676 | /* call prepare on the frontend */ | |
1677 | ret = soc_pcm_prepare(substream); | |
1678 | if (ret < 0) { | |
103d84a3 | 1679 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1680 | fe->dai_link->name); |
1681 | goto out; | |
1682 | } | |
1683 | ||
1684 | /* run the stream event for each BE */ | |
1685 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1686 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1687 | ||
1688 | out: | |
1689 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1690 | mutex_unlock(&fe->card->mutex); | |
1691 | ||
1692 | return ret; | |
1693 | } | |
1694 | ||
be3f3f2c LG |
1695 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1696 | unsigned int cmd, void *arg) | |
1697 | { | |
1698 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1699 | struct snd_soc_platform *platform = rtd->platform; | |
1700 | ||
c5914b0a | 1701 | if (platform->driver->ops && platform->driver->ops->ioctl) |
be3f3f2c LG |
1702 | return platform->driver->ops->ioctl(substream, cmd, arg); |
1703 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1704 | } | |
1705 | ||
618dae11 LG |
1706 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1707 | { | |
07bf84aa LG |
1708 | struct snd_pcm_substream *substream = |
1709 | snd_soc_dpcm_get_substream(fe, stream); | |
1710 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1711 | int err; |
1712 | ||
103d84a3 | 1713 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1714 | stream ? "capture" : "playback", fe->dai_link->name); |
1715 | ||
07bf84aa LG |
1716 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1717 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1718 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1719 | fe->dai_link->name); |
1720 | ||
1721 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1722 | if (err < 0) | |
103d84a3 | 1723 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1724 | } else { |
103d84a3 | 1725 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1726 | fe->dai_link->name); |
1727 | ||
1728 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1729 | if (err < 0) | |
103d84a3 | 1730 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1731 | } |
618dae11 LG |
1732 | |
1733 | err = dpcm_be_dai_hw_free(fe, stream); | |
1734 | if (err < 0) | |
103d84a3 | 1735 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1736 | |
1737 | err = dpcm_be_dai_shutdown(fe, stream); | |
1738 | if (err < 0) | |
103d84a3 | 1739 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1740 | |
1741 | /* run the stream event for each BE */ | |
1742 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1743 | ||
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1748 | { | |
07bf84aa LG |
1749 | struct snd_pcm_substream *substream = |
1750 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1751 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1752 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1753 | int ret; |
1754 | ||
103d84a3 | 1755 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1756 | stream ? "capture" : "playback", fe->dai_link->name); |
1757 | ||
1758 | /* Only start the BE if the FE is ready */ | |
1759 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1760 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1761 | return -EINVAL; | |
1762 | ||
1763 | /* startup must always be called for new BEs */ | |
1764 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1765 | if (ret < 0) |
618dae11 | 1766 | goto disconnect; |
618dae11 LG |
1767 | |
1768 | /* keep going if FE state is > open */ | |
1769 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1770 | return 0; | |
01d7584c | 1771 | |
618dae11 | 1772 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1773 | if (ret < 0) |
618dae11 | 1774 | goto close; |
618dae11 LG |
1775 | |
1776 | /* keep going if FE state is > hw_params */ | |
1777 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1778 | return 0; | |
1779 | ||
1780 | ||
1781 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1782 | if (ret < 0) |
618dae11 | 1783 | goto hw_free; |
618dae11 LG |
1784 | |
1785 | /* run the stream event for each BE */ | |
1786 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1787 | ||
1788 | /* keep going if FE state is > prepare */ | |
1789 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1790 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1791 | return 0; | |
1792 | ||
07bf84aa LG |
1793 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1794 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1795 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1796 | fe->dai_link->name); |
618dae11 | 1797 | |
07bf84aa LG |
1798 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1799 | if (ret < 0) { | |
103d84a3 | 1800 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1801 | goto hw_free; |
1802 | } | |
1803 | } else { | |
103d84a3 | 1804 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1805 | fe->dai_link->name); |
1806 | ||
1807 | ret = dpcm_be_dai_trigger(fe, stream, | |
1808 | SNDRV_PCM_TRIGGER_START); | |
1809 | if (ret < 0) { | |
103d84a3 | 1810 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1811 | goto hw_free; |
1812 | } | |
618dae11 LG |
1813 | } |
1814 | ||
1815 | return 0; | |
1816 | ||
1817 | hw_free: | |
1818 | dpcm_be_dai_hw_free(fe, stream); | |
1819 | close: | |
1820 | dpcm_be_dai_shutdown(fe, stream); | |
1821 | disconnect: | |
1822 | /* disconnect any non started BEs */ | |
1823 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1824 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1825 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1826 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1827 | } | |
1828 | ||
1829 | return ret; | |
1830 | } | |
1831 | ||
1832 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1833 | { | |
1834 | int ret; | |
1835 | ||
1836 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1837 | ret = dpcm_run_update_startup(fe, stream); | |
1838 | if (ret < 0) | |
103d84a3 | 1839 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1840 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1841 | ||
1842 | return ret; | |
1843 | } | |
1844 | ||
1845 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1846 | { | |
1847 | int ret; | |
1848 | ||
1849 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1850 | ret = dpcm_run_update_shutdown(fe, stream); | |
1851 | if (ret < 0) | |
103d84a3 | 1852 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1853 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1854 | ||
1855 | return ret; | |
1856 | } | |
1857 | ||
1858 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1859 | * any DAI links. | |
1860 | */ | |
c3f48ae6 | 1861 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 1862 | { |
618dae11 LG |
1863 | int i, old, new, paths; |
1864 | ||
618dae11 LG |
1865 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
1866 | for (i = 0; i < card->num_rtd; i++) { | |
1867 | struct snd_soc_dapm_widget_list *list; | |
1868 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1869 | ||
1870 | /* make sure link is FE */ | |
1871 | if (!fe->dai_link->dynamic) | |
1872 | continue; | |
1873 | ||
1874 | /* only check active links */ | |
1875 | if (!fe->cpu_dai->active) | |
1876 | continue; | |
1877 | ||
1878 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1879 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1880 | fe->dai_link->name); |
1881 | ||
1882 | /* skip if FE doesn't have playback capability */ | |
1883 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1884 | goto capture; | |
1885 | ||
1886 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1887 | if (paths < 0) { | |
103d84a3 | 1888 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1889 | fe->dai_link->name, "playback"); |
1890 | mutex_unlock(&card->mutex); | |
1891 | return paths; | |
1892 | } | |
1893 | ||
1894 | /* update any new playback paths */ | |
1895 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1896 | if (new) { | |
1897 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1898 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1899 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1900 | } | |
1901 | ||
1902 | /* update any old playback paths */ | |
1903 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1904 | if (old) { | |
1905 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1906 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1907 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1908 | } | |
1909 | ||
1910 | capture: | |
1911 | /* skip if FE doesn't have capture capability */ | |
1912 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1913 | continue; | |
1914 | ||
1915 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1916 | if (paths < 0) { | |
103d84a3 | 1917 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1918 | fe->dai_link->name, "capture"); |
1919 | mutex_unlock(&card->mutex); | |
1920 | return paths; | |
1921 | } | |
1922 | ||
1923 | /* update any new capture paths */ | |
1924 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1925 | if (new) { | |
1926 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1927 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1928 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1929 | } | |
1930 | ||
1931 | /* update any old capture paths */ | |
1932 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1933 | if (old) { | |
1934 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1935 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1936 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1937 | } | |
1938 | ||
1939 | dpcm_path_put(&list); | |
1940 | } | |
1941 | ||
1942 | mutex_unlock(&card->mutex); | |
1943 | return 0; | |
1944 | } | |
01d7584c LG |
1945 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1946 | { | |
1947 | struct snd_soc_dpcm *dpcm; | |
1948 | struct list_head *clients = | |
1949 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1950 | ||
1951 | list_for_each_entry(dpcm, clients, list_be) { | |
1952 | ||
1953 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1954 | struct snd_soc_dai *dai = be->codec_dai; | |
1955 | struct snd_soc_dai_driver *drv = dai->driver; | |
1956 | ||
1957 | if (be->dai_link->ignore_suspend) | |
1958 | continue; | |
1959 | ||
103d84a3 | 1960 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c | 1961 | |
c5914b0a MB |
1962 | if (drv->ops && drv->ops->digital_mute && dai->playback_active) |
1963 | drv->ops->digital_mute(dai, mute); | |
01d7584c LG |
1964 | } |
1965 | ||
1966 | return 0; | |
1967 | } | |
1968 | ||
45c0a188 | 1969 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1970 | { |
1971 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1972 | struct snd_soc_dpcm *dpcm; | |
1973 | struct snd_soc_dapm_widget_list *list; | |
1974 | int ret; | |
1975 | int stream = fe_substream->stream; | |
1976 | ||
1977 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1978 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1979 | ||
1980 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
103d84a3 | 1981 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 1982 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
1983 | } |
1984 | ||
1985 | /* calculate valid and active FE <-> BE dpcms */ | |
1986 | dpcm_process_paths(fe, stream, &list, 1); | |
1987 | ||
1988 | ret = dpcm_fe_dai_startup(fe_substream); | |
1989 | if (ret < 0) { | |
1990 | /* clean up all links */ | |
1991 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1992 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1993 | ||
1994 | dpcm_be_disconnect(fe, stream); | |
1995 | fe->dpcm[stream].runtime = NULL; | |
1996 | } | |
1997 | ||
1998 | dpcm_clear_pending_state(fe, stream); | |
1999 | dpcm_path_put(&list); | |
2000 | mutex_unlock(&fe->card->mutex); | |
2001 | return ret; | |
2002 | } | |
2003 | ||
45c0a188 | 2004 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2005 | { |
2006 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2007 | struct snd_soc_dpcm *dpcm; | |
2008 | int stream = fe_substream->stream, ret; | |
2009 | ||
2010 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2011 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
2012 | ||
2013 | /* mark FE's links ready to prune */ | |
2014 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2015 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2016 | ||
2017 | dpcm_be_disconnect(fe, stream); | |
2018 | ||
2019 | fe->dpcm[stream].runtime = NULL; | |
2020 | mutex_unlock(&fe->card->mutex); | |
2021 | return ret; | |
2022 | } | |
2023 | ||
ddee627c LG |
2024 | /* create a new pcm */ |
2025 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2026 | { | |
ddee627c LG |
2027 | struct snd_soc_platform *platform = rtd->platform; |
2028 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2029 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2030 | struct snd_pcm *pcm; | |
2031 | char new_name[64]; | |
2032 | int ret = 0, playback = 0, capture = 0; | |
2033 | ||
01d7584c LG |
2034 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
2035 | if (cpu_dai->driver->playback.channels_min) | |
2036 | playback = 1; | |
2037 | if (cpu_dai->driver->capture.channels_min) | |
2038 | capture = 1; | |
2039 | } else { | |
05679092 MB |
2040 | if (codec_dai->driver->playback.channels_min && |
2041 | cpu_dai->driver->playback.channels_min) | |
01d7584c | 2042 | playback = 1; |
05679092 MB |
2043 | if (codec_dai->driver->capture.channels_min && |
2044 | cpu_dai->driver->capture.channels_min) | |
01d7584c LG |
2045 | capture = 1; |
2046 | } | |
2047 | ||
d6bead02 FE |
2048 | if (rtd->dai_link->playback_only) { |
2049 | playback = 1; | |
2050 | capture = 0; | |
2051 | } | |
2052 | ||
2053 | if (rtd->dai_link->capture_only) { | |
2054 | playback = 0; | |
2055 | capture = 1; | |
2056 | } | |
2057 | ||
01d7584c LG |
2058 | /* create the PCM */ |
2059 | if (rtd->dai_link->no_pcm) { | |
2060 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2061 | rtd->dai_link->stream_name); | |
2062 | ||
2063 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2064 | playback, capture, &pcm); | |
2065 | } else { | |
2066 | if (rtd->dai_link->dynamic) | |
2067 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2068 | rtd->dai_link->stream_name); | |
2069 | else | |
2070 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2071 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2072 | ||
2073 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2074 | capture, &pcm); | |
2075 | } | |
ddee627c | 2076 | if (ret < 0) { |
103d84a3 | 2077 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2078 | rtd->dai_link->name); |
ddee627c LG |
2079 | return ret; |
2080 | } | |
103d84a3 | 2081 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2082 | |
2083 | /* DAPM dai link stream work */ | |
2084 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2085 | ||
2086 | rtd->pcm = pcm; | |
2087 | pcm->private_data = rtd; | |
01d7584c LG |
2088 | |
2089 | if (rtd->dai_link->no_pcm) { | |
2090 | if (playback) | |
2091 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2092 | if (capture) | |
2093 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2094 | goto out; | |
2095 | } | |
2096 | ||
2097 | /* ASoC PCM operations */ | |
2098 | if (rtd->dai_link->dynamic) { | |
2099 | rtd->ops.open = dpcm_fe_dai_open; | |
2100 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2101 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2102 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2103 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2104 | rtd->ops.close = dpcm_fe_dai_close; | |
2105 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2106 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2107 | } else { |
2108 | rtd->ops.open = soc_pcm_open; | |
2109 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2110 | rtd->ops.prepare = soc_pcm_prepare; | |
2111 | rtd->ops.trigger = soc_pcm_trigger; | |
2112 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2113 | rtd->ops.close = soc_pcm_close; | |
2114 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2115 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2116 | } |
2117 | ||
ddee627c | 2118 | if (platform->driver->ops) { |
01d7584c LG |
2119 | rtd->ops.ack = platform->driver->ops->ack; |
2120 | rtd->ops.copy = platform->driver->ops->copy; | |
2121 | rtd->ops.silence = platform->driver->ops->silence; | |
2122 | rtd->ops.page = platform->driver->ops->page; | |
2123 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2124 | } |
2125 | ||
2126 | if (playback) | |
01d7584c | 2127 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2128 | |
2129 | if (capture) | |
01d7584c | 2130 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2131 | |
2132 | if (platform->driver->pcm_new) { | |
2133 | ret = platform->driver->pcm_new(rtd); | |
2134 | if (ret < 0) { | |
b1bc7b3c MB |
2135 | dev_err(platform->dev, |
2136 | "ASoC: pcm constructor failed: %d\n", | |
2137 | ret); | |
ddee627c LG |
2138 | return ret; |
2139 | } | |
2140 | } | |
2141 | ||
2142 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2143 | out: |
7cc302d2 | 2144 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2145 | cpu_dai->name); |
2146 | return ret; | |
2147 | } | |
01d7584c LG |
2148 | |
2149 | /* is the current PCM operation for this FE ? */ | |
2150 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2151 | { | |
2152 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2153 | return 1; | |
2154 | return 0; | |
2155 | } | |
2156 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2157 | ||
2158 | /* is the current PCM operation for this BE ? */ | |
2159 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2160 | struct snd_soc_pcm_runtime *be, int stream) | |
2161 | { | |
2162 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2163 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2164 | be->dpcm[stream].runtime_update)) | |
2165 | return 1; | |
2166 | return 0; | |
2167 | } | |
2168 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2169 | ||
2170 | /* get the substream for this BE */ | |
2171 | struct snd_pcm_substream * | |
2172 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2173 | { | |
2174 | return be->pcm->streams[stream].substream; | |
2175 | } | |
2176 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2177 | ||
2178 | /* get the BE runtime state */ | |
2179 | enum snd_soc_dpcm_state | |
2180 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2181 | { | |
2182 | return be->dpcm[stream].state; | |
2183 | } | |
2184 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2185 | ||
2186 | /* set the BE runtime state */ | |
2187 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2188 | int stream, enum snd_soc_dpcm_state state) | |
2189 | { | |
2190 | be->dpcm[stream].state = state; | |
2191 | } | |
2192 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2193 | ||
2194 | /* | |
2195 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2196 | * are not running, paused or suspended for the specified stream direction. | |
2197 | */ | |
2198 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2199 | struct snd_soc_pcm_runtime *be, int stream) | |
2200 | { | |
2201 | struct snd_soc_dpcm *dpcm; | |
2202 | int state; | |
2203 | ||
2204 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2205 | ||
2206 | if (dpcm->fe == fe) | |
2207 | continue; | |
2208 | ||
2209 | state = dpcm->fe->dpcm[stream].state; | |
2210 | if (state == SND_SOC_DPCM_STATE_START || | |
2211 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2212 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2213 | return 0; | |
2214 | } | |
2215 | ||
2216 | /* it's safe to free/stop this BE DAI */ | |
2217 | return 1; | |
2218 | } | |
2219 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2220 | ||
2221 | /* | |
2222 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2223 | * running, paused or suspended for the specified stream direction. | |
2224 | */ | |
2225 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2226 | struct snd_soc_pcm_runtime *be, int stream) | |
2227 | { | |
2228 | struct snd_soc_dpcm *dpcm; | |
2229 | int state; | |
2230 | ||
2231 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2232 | ||
2233 | if (dpcm->fe == fe) | |
2234 | continue; | |
2235 | ||
2236 | state = dpcm->fe->dpcm[stream].state; | |
2237 | if (state == SND_SOC_DPCM_STATE_START || | |
2238 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2239 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2240 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2241 | return 0; | |
2242 | } | |
2243 | ||
2244 | /* it's safe to change hw_params */ | |
2245 | return 1; | |
2246 | } | |
2247 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2248 | |
07bf84aa LG |
2249 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2250 | int cmd, struct snd_soc_platform *platform) | |
2251 | { | |
c5914b0a | 2252 | if (platform->driver->ops && platform->driver->ops->trigger) |
07bf84aa LG |
2253 | return platform->driver->ops->trigger(substream, cmd); |
2254 | return 0; | |
2255 | } | |
2256 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2257 | ||
f86dcef8 LG |
2258 | #ifdef CONFIG_DEBUG_FS |
2259 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2260 | { | |
2261 | switch (state) { | |
2262 | case SND_SOC_DPCM_STATE_NEW: | |
2263 | return "new"; | |
2264 | case SND_SOC_DPCM_STATE_OPEN: | |
2265 | return "open"; | |
2266 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2267 | return "hw_params"; | |
2268 | case SND_SOC_DPCM_STATE_PREPARE: | |
2269 | return "prepare"; | |
2270 | case SND_SOC_DPCM_STATE_START: | |
2271 | return "start"; | |
2272 | case SND_SOC_DPCM_STATE_STOP: | |
2273 | return "stop"; | |
2274 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2275 | return "suspend"; | |
2276 | case SND_SOC_DPCM_STATE_PAUSED: | |
2277 | return "paused"; | |
2278 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2279 | return "hw_free"; | |
2280 | case SND_SOC_DPCM_STATE_CLOSE: | |
2281 | return "close"; | |
2282 | } | |
2283 | ||
2284 | return "unknown"; | |
2285 | } | |
2286 | ||
f86dcef8 LG |
2287 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2288 | int stream, char *buf, size_t size) | |
2289 | { | |
2290 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2291 | struct snd_soc_dpcm *dpcm; | |
2292 | ssize_t offset = 0; | |
2293 | ||
2294 | /* FE state */ | |
2295 | offset += snprintf(buf + offset, size - offset, | |
2296 | "[%s - %s]\n", fe->dai_link->name, | |
2297 | stream ? "Capture" : "Playback"); | |
2298 | ||
2299 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2300 | dpcm_state_string(fe->dpcm[stream].state)); | |
2301 | ||
2302 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2303 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2304 | offset += snprintf(buf + offset, size - offset, | |
2305 | "Hardware Params: " | |
2306 | "Format = %s, Channels = %d, Rate = %d\n", | |
2307 | snd_pcm_format_name(params_format(params)), | |
2308 | params_channels(params), | |
2309 | params_rate(params)); | |
2310 | ||
2311 | /* BEs state */ | |
2312 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2313 | ||
2314 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2315 | offset += snprintf(buf + offset, size - offset, | |
2316 | " No active DSP links\n"); | |
2317 | goto out; | |
2318 | } | |
2319 | ||
2320 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2321 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2322 | params = &dpcm->hw_params; | |
2323 | ||
2324 | offset += snprintf(buf + offset, size - offset, | |
2325 | "- %s\n", be->dai_link->name); | |
2326 | ||
2327 | offset += snprintf(buf + offset, size - offset, | |
2328 | " State: %s\n", | |
2329 | dpcm_state_string(be->dpcm[stream].state)); | |
2330 | ||
2331 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2332 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2333 | offset += snprintf(buf + offset, size - offset, | |
2334 | " Hardware Params: " | |
2335 | "Format = %s, Channels = %d, Rate = %d\n", | |
2336 | snd_pcm_format_name(params_format(params)), | |
2337 | params_channels(params), | |
2338 | params_rate(params)); | |
2339 | } | |
2340 | ||
2341 | out: | |
2342 | return offset; | |
2343 | } | |
2344 | ||
2345 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2346 | size_t count, loff_t *ppos) | |
2347 | { | |
2348 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2349 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2350 | char *buf; | |
2351 | ||
2352 | buf = kmalloc(out_count, GFP_KERNEL); | |
2353 | if (!buf) | |
2354 | return -ENOMEM; | |
2355 | ||
2356 | if (fe->cpu_dai->driver->playback.channels_min) | |
2357 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2358 | buf + offset, out_count - offset); | |
2359 | ||
2360 | if (fe->cpu_dai->driver->capture.channels_min) | |
2361 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2362 | buf + offset, out_count - offset); | |
2363 | ||
f57b8488 | 2364 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2365 | |
f57b8488 LG |
2366 | kfree(buf); |
2367 | return ret; | |
f86dcef8 LG |
2368 | } |
2369 | ||
2370 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2371 | .open = simple_open, |
f86dcef8 LG |
2372 | .read = dpcm_state_read_file, |
2373 | .llseek = default_llseek, | |
2374 | }; | |
2375 | ||
2376 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2377 | { | |
b3bba9a1 MB |
2378 | if (!rtd->dai_link) |
2379 | return 0; | |
2380 | ||
f86dcef8 LG |
2381 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2382 | rtd->card->debugfs_card_root); | |
2383 | if (!rtd->debugfs_dpcm_root) { | |
2384 | dev_dbg(rtd->dev, | |
2385 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2386 | rtd->dai_link->name); | |
2387 | return -EINVAL; | |
2388 | } | |
2389 | ||
f57b8488 | 2390 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2391 | rtd->debugfs_dpcm_root, |
2392 | rtd, &dpcm_state_fops); | |
2393 | ||
2394 | return 0; | |
2395 | } | |
2396 | #endif |