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); | |
16d7ea91 LPC |
161 | if (hw->formats) |
162 | hw->formats &= codec_stream->formats & cpu_stream->formats; | |
163 | else | |
164 | hw->formats = codec_stream->formats & cpu_stream->formats; | |
bd477c31 LPC |
165 | hw->rates = codec_stream->rates & cpu_stream->rates; |
166 | if (codec_stream->rates | |
167 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
168 | hw->rates |= cpu_stream->rates; | |
169 | if (cpu_stream->rates | |
170 | & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) | |
171 | hw->rates |= codec_stream->rates; | |
78e45c99 | 172 | |
817873f4 LPC |
173 | hw->rate_min = 0; |
174 | hw->rate_max = UINT_MAX; | |
175 | ||
78e45c99 LPC |
176 | snd_pcm_limit_hw_rates(runtime); |
177 | ||
178 | hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); | |
179 | hw->rate_min = max(hw->rate_min, codec_stream->rate_min); | |
180 | hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); | |
181 | hw->rate_max = min_not_zero(hw->rate_max, codec_stream->rate_max); | |
bd477c31 LPC |
182 | } |
183 | ||
ddee627c LG |
184 | /* |
185 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
186 | * then initialized and any private data can be allocated. This also calls | |
187 | * startup for the cpu DAI, platform, machine and codec DAI. | |
188 | */ | |
189 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
190 | { | |
191 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
192 | struct snd_pcm_runtime *runtime = substream->runtime; | |
193 | struct snd_soc_platform *platform = rtd->platform; | |
194 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
195 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
196 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
197 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
198 | int ret = 0; | |
199 | ||
988e8cc4 NC |
200 | pinctrl_pm_select_default_state(cpu_dai->dev); |
201 | pinctrl_pm_select_default_state(codec_dai->dev); | |
d6652ef8 MB |
202 | pm_runtime_get_sync(cpu_dai->dev); |
203 | pm_runtime_get_sync(codec_dai->dev); | |
204 | pm_runtime_get_sync(platform->dev); | |
205 | ||
b8c0dab9 | 206 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
207 | |
208 | /* startup the audio subsystem */ | |
c5914b0a | 209 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) { |
ddee627c LG |
210 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
211 | if (ret < 0) { | |
103d84a3 LG |
212 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
213 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
214 | goto out; |
215 | } | |
216 | } | |
217 | ||
218 | if (platform->driver->ops && platform->driver->ops->open) { | |
219 | ret = platform->driver->ops->open(substream); | |
220 | if (ret < 0) { | |
103d84a3 LG |
221 | dev_err(platform->dev, "ASoC: can't open platform" |
222 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
223 | goto platform_err; |
224 | } | |
225 | } | |
226 | ||
c5914b0a | 227 | if (codec_dai->driver->ops && codec_dai->driver->ops->startup) { |
ddee627c LG |
228 | ret = codec_dai->driver->ops->startup(substream, codec_dai); |
229 | if (ret < 0) { | |
103d84a3 LG |
230 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
231 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
232 | goto codec_dai_err; |
233 | } | |
234 | } | |
235 | ||
236 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
237 | ret = rtd->dai_link->ops->startup(substream); | |
238 | if (ret < 0) { | |
103d84a3 | 239 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 240 | rtd->dai_link->name, ret); |
ddee627c LG |
241 | goto machine_err; |
242 | } | |
243 | } | |
244 | ||
01d7584c LG |
245 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
246 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
247 | goto dynamic; | |
248 | ||
ddee627c LG |
249 | /* Check that the codec and cpu DAIs are compatible */ |
250 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
78e45c99 | 251 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->playback, |
bd477c31 | 252 | &cpu_dai_drv->playback); |
ddee627c | 253 | } else { |
78e45c99 | 254 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->capture, |
bd477c31 | 255 | &cpu_dai_drv->capture); |
ddee627c LG |
256 | } |
257 | ||
258 | ret = -EINVAL; | |
ddee627c | 259 | if (!runtime->hw.rates) { |
103d84a3 | 260 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
261 | codec_dai->name, cpu_dai->name); |
262 | goto config_err; | |
263 | } | |
264 | if (!runtime->hw.formats) { | |
103d84a3 | 265 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
266 | codec_dai->name, cpu_dai->name); |
267 | goto config_err; | |
268 | } | |
269 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
270 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 271 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
272 | codec_dai->name, cpu_dai->name); |
273 | goto config_err; | |
274 | } | |
275 | ||
58ba9b25 MB |
276 | soc_pcm_apply_msb(substream, codec_dai); |
277 | soc_pcm_apply_msb(substream, cpu_dai); | |
278 | ||
ddee627c | 279 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
280 | if (cpu_dai->active) { |
281 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
282 | if (ret != 0) | |
283 | goto config_err; | |
284 | } | |
285 | ||
286 | if (codec_dai->active) { | |
287 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
288 | if (ret != 0) |
289 | goto config_err; | |
290 | } | |
291 | ||
103d84a3 | 292 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 293 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
294 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
295 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 296 | runtime->hw.channels_max); |
103d84a3 | 297 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
298 | runtime->hw.rate_max); |
299 | ||
01d7584c | 300 | dynamic: |
ddee627c LG |
301 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
302 | cpu_dai->playback_active++; | |
303 | codec_dai->playback_active++; | |
304 | } else { | |
305 | cpu_dai->capture_active++; | |
306 | codec_dai->capture_active++; | |
307 | } | |
308 | cpu_dai->active++; | |
309 | codec_dai->active++; | |
310 | rtd->codec->active++; | |
b8c0dab9 | 311 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
312 | return 0; |
313 | ||
314 | config_err: | |
315 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
316 | rtd->dai_link->ops->shutdown(substream); | |
317 | ||
318 | machine_err: | |
319 | if (codec_dai->driver->ops->shutdown) | |
320 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
321 | ||
322 | codec_dai_err: | |
323 | if (platform->driver->ops && platform->driver->ops->close) | |
324 | platform->driver->ops->close(substream); | |
325 | ||
326 | platform_err: | |
327 | if (cpu_dai->driver->ops->shutdown) | |
328 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
329 | out: | |
b8c0dab9 | 330 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
331 | |
332 | pm_runtime_put(platform->dev); | |
333 | pm_runtime_put(codec_dai->dev); | |
334 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
335 | if (!codec_dai->active) |
336 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
337 | if (!cpu_dai->active) | |
338 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 339 | |
ddee627c LG |
340 | return ret; |
341 | } | |
342 | ||
343 | /* | |
344 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
345 | * This is to ensure there are no pops or clicks in between any music tracks | |
346 | * due to DAPM power cycling. | |
347 | */ | |
348 | static void close_delayed_work(struct work_struct *work) | |
349 | { | |
350 | struct snd_soc_pcm_runtime *rtd = | |
351 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
352 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
353 | ||
b8c0dab9 | 354 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 355 | |
103d84a3 | 356 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
357 | codec_dai->driver->playback.stream_name, |
358 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 359 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
360 | |
361 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
362 | if (rtd->pop_wait == 1) { |
363 | rtd->pop_wait = 0; | |
7bd3a6f3 | 364 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 365 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
366 | } |
367 | ||
b8c0dab9 | 368 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
369 | } |
370 | ||
371 | /* | |
372 | * Called by ALSA when a PCM substream is closed. Private data can be | |
373 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
374 | * shutdown. | |
375 | */ | |
91d5e6b4 | 376 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
377 | { |
378 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
379 | struct snd_soc_platform *platform = rtd->platform; | |
380 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
381 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
382 | struct snd_soc_codec *codec = rtd->codec; | |
383 | ||
b8c0dab9 | 384 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
385 | |
386 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
387 | cpu_dai->playback_active--; | |
388 | codec_dai->playback_active--; | |
389 | } else { | |
390 | cpu_dai->capture_active--; | |
391 | codec_dai->capture_active--; | |
392 | } | |
393 | ||
394 | cpu_dai->active--; | |
395 | codec_dai->active--; | |
396 | codec->active--; | |
397 | ||
17841020 DA |
398 | /* clear the corresponding DAIs rate when inactive */ |
399 | if (!cpu_dai->active) | |
400 | cpu_dai->rate = 0; | |
401 | ||
402 | if (!codec_dai->active) | |
403 | codec_dai->rate = 0; | |
25b76791 | 404 | |
ddee627c LG |
405 | /* Muting the DAC suppresses artifacts caused during digital |
406 | * shutdown, for example from stopping clocks. | |
407 | */ | |
da18396f | 408 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
409 | |
410 | if (cpu_dai->driver->ops->shutdown) | |
411 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
412 | ||
413 | if (codec_dai->driver->ops->shutdown) | |
414 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
415 | ||
416 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
417 | rtd->dai_link->ops->shutdown(substream); | |
418 | ||
419 | if (platform->driver->ops && platform->driver->ops->close) | |
420 | platform->driver->ops->close(substream); | |
421 | cpu_dai->runtime = NULL; | |
422 | ||
423 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 424 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 425 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
426 | /* powered down playback stream now */ |
427 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 428 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 429 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
430 | } else { |
431 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 432 | rtd->pop_wait = 1; |
d4e1a73a MB |
433 | queue_delayed_work(system_power_efficient_wq, |
434 | &rtd->delayed_work, | |
435 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 436 | } |
ddee627c LG |
437 | } else { |
438 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 439 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 440 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
441 | } |
442 | ||
b8c0dab9 | 443 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
444 | |
445 | pm_runtime_put(platform->dev); | |
446 | pm_runtime_put(codec_dai->dev); | |
447 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
448 | if (!codec_dai->active) |
449 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
450 | if (!cpu_dai->active) | |
451 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 452 | |
ddee627c LG |
453 | return 0; |
454 | } | |
455 | ||
456 | /* | |
457 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
458 | * rate, etc. This function is non atomic and can be called multiple times, | |
459 | * it can refer to the runtime info. | |
460 | */ | |
461 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
462 | { | |
463 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
464 | struct snd_soc_platform *platform = rtd->platform; | |
465 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
466 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
467 | int ret = 0; | |
468 | ||
b8c0dab9 | 469 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
470 | |
471 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
472 | ret = rtd->dai_link->ops->prepare(substream); | |
473 | if (ret < 0) { | |
103d84a3 LG |
474 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
475 | " %d\n", ret); | |
ddee627c LG |
476 | goto out; |
477 | } | |
478 | } | |
479 | ||
480 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
481 | ret = platform->driver->ops->prepare(substream); | |
482 | if (ret < 0) { | |
103d84a3 LG |
483 | dev_err(platform->dev, "ASoC: platform prepare error:" |
484 | " %d\n", ret); | |
ddee627c LG |
485 | goto out; |
486 | } | |
487 | } | |
488 | ||
c5914b0a | 489 | if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) { |
ddee627c LG |
490 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); |
491 | if (ret < 0) { | |
103d84a3 | 492 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 493 | ret); |
ddee627c LG |
494 | goto out; |
495 | } | |
496 | } | |
497 | ||
c5914b0a | 498 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) { |
ddee627c LG |
499 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
500 | if (ret < 0) { | |
103d84a3 | 501 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 502 | ret); |
ddee627c LG |
503 | goto out; |
504 | } | |
505 | } | |
506 | ||
507 | /* cancel any delayed stream shutdown that is pending */ | |
508 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
509 | rtd->pop_wait) { |
510 | rtd->pop_wait = 0; | |
ddee627c LG |
511 | cancel_delayed_work(&rtd->delayed_work); |
512 | } | |
513 | ||
d9b0951b LG |
514 | snd_soc_dapm_stream_event(rtd, substream->stream, |
515 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 516 | |
da18396f | 517 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
518 | |
519 | out: | |
b8c0dab9 | 520 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
521 | return ret; |
522 | } | |
523 | ||
524 | /* | |
525 | * Called by ALSA when the hardware params are set by application. This | |
526 | * function can also be called multiple times and can allocate buffers | |
527 | * (using snd_pcm_lib_* ). It's non-atomic. | |
528 | */ | |
529 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
530 | struct snd_pcm_hw_params *params) | |
531 | { | |
532 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
533 | struct snd_soc_platform *platform = rtd->platform; | |
534 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
535 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
536 | int ret = 0; | |
537 | ||
b8c0dab9 | 538 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
539 | |
540 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { | |
541 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
542 | if (ret < 0) { | |
103d84a3 LG |
543 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
544 | " failed: %d\n", ret); | |
ddee627c LG |
545 | goto out; |
546 | } | |
547 | } | |
548 | ||
c5914b0a | 549 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_params) { |
ddee627c LG |
550 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); |
551 | if (ret < 0) { | |
103d84a3 LG |
552 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
553 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
554 | goto codec_err; |
555 | } | |
556 | } | |
557 | ||
c5914b0a | 558 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_params) { |
ddee627c LG |
559 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); |
560 | if (ret < 0) { | |
103d84a3 | 561 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 562 | cpu_dai->name, ret); |
ddee627c LG |
563 | goto interface_err; |
564 | } | |
565 | } | |
566 | ||
567 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
568 | ret = platform->driver->ops->hw_params(substream, params); | |
569 | if (ret < 0) { | |
103d84a3 | 570 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 571 | platform->name, ret); |
ddee627c LG |
572 | goto platform_err; |
573 | } | |
574 | } | |
575 | ||
17841020 DA |
576 | /* store the rate for each DAIs */ |
577 | cpu_dai->rate = params_rate(params); | |
578 | codec_dai->rate = params_rate(params); | |
ddee627c LG |
579 | |
580 | out: | |
b8c0dab9 | 581 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
582 | return ret; |
583 | ||
584 | platform_err: | |
c5914b0a | 585 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
586 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
587 | ||
588 | interface_err: | |
c5914b0a | 589 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
590 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
591 | ||
592 | codec_err: | |
593 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
594 | rtd->dai_link->ops->hw_free(substream); | |
595 | ||
b8c0dab9 | 596 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
597 | return ret; |
598 | } | |
599 | ||
600 | /* | |
601 | * Frees resources allocated by hw_params, can be called multiple times | |
602 | */ | |
603 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
604 | { | |
605 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
606 | struct snd_soc_platform *platform = rtd->platform; | |
607 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
608 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
609 | struct snd_soc_codec *codec = rtd->codec; | |
610 | ||
b8c0dab9 | 611 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
612 | |
613 | /* apply codec digital mute */ | |
614 | if (!codec->active) | |
da18396f | 615 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
616 | |
617 | /* free any machine hw params */ | |
618 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
619 | rtd->dai_link->ops->hw_free(substream); | |
620 | ||
621 | /* free any DMA resources */ | |
622 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
623 | platform->driver->ops->hw_free(substream); | |
624 | ||
625 | /* now free hw params for the DAIs */ | |
c5914b0a | 626 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
627 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
628 | ||
c5914b0a | 629 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
630 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
631 | ||
b8c0dab9 | 632 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
633 | return 0; |
634 | } | |
635 | ||
636 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
637 | { | |
638 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
639 | struct snd_soc_platform *platform = rtd->platform; | |
640 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
641 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
642 | int ret; | |
643 | ||
c5914b0a | 644 | if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) { |
ddee627c LG |
645 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); |
646 | if (ret < 0) | |
647 | return ret; | |
648 | } | |
649 | ||
650 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
651 | ret = platform->driver->ops->trigger(substream, cmd); | |
652 | if (ret < 0) | |
653 | return ret; | |
654 | } | |
655 | ||
c5914b0a | 656 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) { |
ddee627c LG |
657 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
658 | if (ret < 0) | |
659 | return ret; | |
660 | } | |
661 | return 0; | |
662 | } | |
663 | ||
45c0a188 MB |
664 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
665 | int cmd) | |
07bf84aa LG |
666 | { |
667 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
668 | struct snd_soc_platform *platform = rtd->platform; | |
669 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
670 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
671 | int ret; | |
672 | ||
c5914b0a MB |
673 | if (codec_dai->driver->ops && |
674 | codec_dai->driver->ops->bespoke_trigger) { | |
07bf84aa LG |
675 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); |
676 | if (ret < 0) | |
677 | return ret; | |
678 | } | |
679 | ||
c5914b0a | 680 | if (platform->driver->ops && platform->driver->bespoke_trigger) { |
07bf84aa LG |
681 | ret = platform->driver->bespoke_trigger(substream, cmd); |
682 | if (ret < 0) | |
683 | return ret; | |
684 | } | |
685 | ||
c5914b0a | 686 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) { |
07bf84aa LG |
687 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); |
688 | if (ret < 0) | |
689 | return ret; | |
690 | } | |
691 | return 0; | |
692 | } | |
ddee627c LG |
693 | /* |
694 | * soc level wrapper for pointer callback | |
695 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
696 | * the runtime->delay will be updated accordingly. | |
697 | */ | |
698 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
699 | { | |
700 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
701 | struct snd_soc_platform *platform = rtd->platform; | |
702 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
703 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
704 | struct snd_pcm_runtime *runtime = substream->runtime; | |
705 | snd_pcm_uframes_t offset = 0; | |
706 | snd_pcm_sframes_t delay = 0; | |
707 | ||
708 | if (platform->driver->ops && platform->driver->ops->pointer) | |
709 | offset = platform->driver->ops->pointer(substream); | |
710 | ||
c5914b0a | 711 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay) |
ddee627c LG |
712 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
713 | ||
c5914b0a | 714 | if (codec_dai->driver->ops && codec_dai->driver->ops->delay) |
ddee627c LG |
715 | delay += codec_dai->driver->ops->delay(substream, codec_dai); |
716 | ||
717 | if (platform->driver->delay) | |
718 | delay += platform->driver->delay(substream, codec_dai); | |
719 | ||
720 | runtime->delay = delay; | |
721 | ||
722 | return offset; | |
723 | } | |
724 | ||
01d7584c LG |
725 | /* connect a FE and BE */ |
726 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
727 | struct snd_soc_pcm_runtime *be, int stream) | |
728 | { | |
729 | struct snd_soc_dpcm *dpcm; | |
730 | ||
731 | /* only add new dpcms */ | |
732 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
733 | if (dpcm->be == be && dpcm->fe == fe) | |
734 | return 0; | |
735 | } | |
736 | ||
737 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
738 | if (!dpcm) | |
739 | return -ENOMEM; | |
740 | ||
741 | dpcm->be = be; | |
742 | dpcm->fe = fe; | |
743 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
744 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
745 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
746 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
747 | ||
7cc302d2 | 748 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
749 | stream ? "capture" : "playback", fe->dai_link->name, |
750 | stream ? "<-" : "->", be->dai_link->name); | |
751 | ||
f86dcef8 LG |
752 | #ifdef CONFIG_DEBUG_FS |
753 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
754 | fe->debugfs_dpcm_root, &dpcm->state); | |
755 | #endif | |
01d7584c LG |
756 | return 1; |
757 | } | |
758 | ||
759 | /* reparent a BE onto another FE */ | |
760 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
761 | struct snd_soc_pcm_runtime *be, int stream) | |
762 | { | |
763 | struct snd_soc_dpcm *dpcm; | |
764 | struct snd_pcm_substream *fe_substream, *be_substream; | |
765 | ||
766 | /* reparent if BE is connected to other FEs */ | |
767 | if (!be->dpcm[stream].users) | |
768 | return; | |
769 | ||
770 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
771 | ||
772 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
773 | if (dpcm->fe == fe) | |
774 | continue; | |
775 | ||
7cc302d2 | 776 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
777 | stream ? "capture" : "playback", |
778 | dpcm->fe->dai_link->name, | |
779 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
780 | ||
781 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
782 | be_substream->runtime = fe_substream->runtime; | |
783 | break; | |
784 | } | |
785 | } | |
786 | ||
787 | /* disconnect a BE and FE */ | |
788 | static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) | |
789 | { | |
790 | struct snd_soc_dpcm *dpcm, *d; | |
791 | ||
792 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 793 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
794 | stream ? "capture" : "playback", |
795 | dpcm->be->dai_link->name); | |
796 | ||
797 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
798 | continue; | |
799 | ||
7cc302d2 | 800 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
801 | stream ? "capture" : "playback", fe->dai_link->name, |
802 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
803 | ||
804 | /* BEs still alive need new FE */ | |
805 | dpcm_be_reparent(fe, dpcm->be, stream); | |
806 | ||
f86dcef8 LG |
807 | #ifdef CONFIG_DEBUG_FS |
808 | debugfs_remove(dpcm->debugfs_state); | |
809 | #endif | |
01d7584c LG |
810 | list_del(&dpcm->list_be); |
811 | list_del(&dpcm->list_fe); | |
812 | kfree(dpcm); | |
813 | } | |
814 | } | |
815 | ||
816 | /* get BE for DAI widget and stream */ | |
817 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
818 | struct snd_soc_dapm_widget *widget, int stream) | |
819 | { | |
820 | struct snd_soc_pcm_runtime *be; | |
821 | int i; | |
822 | ||
823 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
824 | for (i = 0; i < card->num_links; i++) { | |
825 | be = &card->rtd[i]; | |
826 | ||
35ea0655 LG |
827 | if (!be->dai_link->no_pcm) |
828 | continue; | |
829 | ||
01d7584c LG |
830 | if (be->cpu_dai->playback_widget == widget || |
831 | be->codec_dai->playback_widget == widget) | |
832 | return be; | |
833 | } | |
834 | } else { | |
835 | ||
836 | for (i = 0; i < card->num_links; i++) { | |
837 | be = &card->rtd[i]; | |
838 | ||
35ea0655 LG |
839 | if (!be->dai_link->no_pcm) |
840 | continue; | |
841 | ||
01d7584c LG |
842 | if (be->cpu_dai->capture_widget == widget || |
843 | be->codec_dai->capture_widget == widget) | |
844 | return be; | |
845 | } | |
846 | } | |
847 | ||
103d84a3 | 848 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
849 | stream ? "capture" : "playback", widget->name); |
850 | return NULL; | |
851 | } | |
852 | ||
853 | static inline struct snd_soc_dapm_widget * | |
854 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
855 | { | |
856 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
857 | return rtd->cpu_dai->playback_widget; | |
858 | else | |
859 | return rtd->cpu_dai->capture_widget; | |
860 | } | |
861 | ||
862 | static inline struct snd_soc_dapm_widget * | |
863 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
864 | { | |
865 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
866 | return rtd->codec_dai->playback_widget; | |
867 | else | |
868 | return rtd->codec_dai->capture_widget; | |
869 | } | |
870 | ||
871 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
872 | struct snd_soc_dapm_widget *widget) | |
873 | { | |
874 | int i; | |
875 | ||
876 | for (i = 0; i < list->num_widgets; i++) { | |
877 | if (widget == list->widgets[i]) | |
878 | return 1; | |
879 | } | |
880 | ||
881 | return 0; | |
882 | } | |
883 | ||
884 | static int dpcm_path_get(struct snd_soc_pcm_runtime *fe, | |
885 | int stream, struct snd_soc_dapm_widget_list **list_) | |
886 | { | |
887 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
888 | struct snd_soc_dapm_widget_list *list; | |
889 | int paths; | |
890 | ||
891 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
892 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
893 | if (list == NULL) | |
894 | return -ENOMEM; | |
895 | ||
896 | /* get number of valid DAI paths and their widgets */ | |
897 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
898 | ||
103d84a3 | 899 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
900 | stream ? "capture" : "playback"); |
901 | ||
902 | *list_ = list; | |
903 | return paths; | |
904 | } | |
905 | ||
906 | static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list) | |
907 | { | |
908 | kfree(*list); | |
909 | } | |
910 | ||
911 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
912 | struct snd_soc_dapm_widget_list **list_) | |
913 | { | |
914 | struct snd_soc_dpcm *dpcm; | |
915 | struct snd_soc_dapm_widget_list *list = *list_; | |
916 | struct snd_soc_dapm_widget *widget; | |
917 | int prune = 0; | |
918 | ||
919 | /* Destroy any old FE <--> BE connections */ | |
920 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
921 | ||
922 | /* is there a valid CPU DAI widget for this BE */ | |
923 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
924 | ||
925 | /* prune the BE if it's no longer in our active list */ | |
926 | if (widget && widget_in_list(list, widget)) | |
927 | continue; | |
928 | ||
929 | /* is there a valid CODEC DAI widget for this BE */ | |
930 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
931 | ||
932 | /* prune the BE if it's no longer in our active list */ | |
933 | if (widget && widget_in_list(list, widget)) | |
934 | continue; | |
935 | ||
103d84a3 | 936 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
937 | stream ? "capture" : "playback", |
938 | dpcm->be->dai_link->name, fe->dai_link->name); | |
939 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
940 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
941 | prune++; | |
942 | } | |
943 | ||
103d84a3 | 944 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
945 | return prune; |
946 | } | |
947 | ||
948 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
949 | struct snd_soc_dapm_widget_list **list_) | |
950 | { | |
951 | struct snd_soc_card *card = fe->card; | |
952 | struct snd_soc_dapm_widget_list *list = *list_; | |
953 | struct snd_soc_pcm_runtime *be; | |
954 | int i, new = 0, err; | |
955 | ||
956 | /* Create any new FE <--> BE connections */ | |
957 | for (i = 0; i < list->num_widgets; i++) { | |
958 | ||
4616274d MB |
959 | switch (list->widgets[i]->id) { |
960 | case snd_soc_dapm_dai_in: | |
961 | case snd_soc_dapm_dai_out: | |
962 | break; | |
963 | default: | |
01d7584c | 964 | continue; |
4616274d | 965 | } |
01d7584c LG |
966 | |
967 | /* is there a valid BE rtd for this widget */ | |
968 | be = dpcm_get_be(card, list->widgets[i], stream); | |
969 | if (!be) { | |
103d84a3 | 970 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
971 | list->widgets[i]->name); |
972 | continue; | |
973 | } | |
974 | ||
975 | /* make sure BE is a real BE */ | |
976 | if (!be->dai_link->no_pcm) | |
977 | continue; | |
978 | ||
979 | /* don't connect if FE is not running */ | |
980 | if (!fe->dpcm[stream].runtime) | |
981 | continue; | |
982 | ||
983 | /* newly connected FE and BE */ | |
984 | err = dpcm_be_connect(fe, be, stream); | |
985 | if (err < 0) { | |
103d84a3 | 986 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
987 | list->widgets[i]->name); |
988 | break; | |
989 | } else if (err == 0) /* already connected */ | |
990 | continue; | |
991 | ||
992 | /* new */ | |
993 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
994 | new++; | |
995 | } | |
996 | ||
103d84a3 | 997 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
998 | return new; |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * Find the corresponding BE DAIs that source or sink audio to this | |
1003 | * FE substream. | |
1004 | */ | |
1005 | static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, | |
1006 | int stream, struct snd_soc_dapm_widget_list **list, int new) | |
1007 | { | |
1008 | if (new) | |
1009 | return dpcm_add_paths(fe, stream, list); | |
1010 | else | |
1011 | return dpcm_prune_paths(fe, stream, list); | |
1012 | } | |
1013 | ||
1014 | static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) | |
1015 | { | |
1016 | struct snd_soc_dpcm *dpcm; | |
1017 | ||
1018 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1019 | dpcm->be->dpcm[stream].runtime_update = | |
1020 | SND_SOC_DPCM_UPDATE_NO; | |
1021 | } | |
1022 | ||
1023 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1024 | int stream) | |
1025 | { | |
1026 | struct snd_soc_dpcm *dpcm; | |
1027 | ||
1028 | /* disable any enabled and non active backends */ | |
1029 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1030 | ||
1031 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1032 | struct snd_pcm_substream *be_substream = | |
1033 | snd_soc_dpcm_get_substream(be, stream); | |
1034 | ||
1035 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1036 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1037 | stream ? "capture" : "playback", |
1038 | be->dpcm[stream].state); | |
1039 | ||
1040 | if (--be->dpcm[stream].users != 0) | |
1041 | continue; | |
1042 | ||
1043 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1044 | continue; | |
1045 | ||
1046 | soc_pcm_close(be_substream); | |
1047 | be_substream->runtime = NULL; | |
1048 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1053 | { | |
1054 | struct snd_soc_dpcm *dpcm; | |
1055 | int err, count = 0; | |
1056 | ||
1057 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1058 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1059 | ||
1060 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1061 | struct snd_pcm_substream *be_substream = | |
1062 | snd_soc_dpcm_get_substream(be, stream); | |
1063 | ||
2062b4c5 RKAL |
1064 | if (!be_substream) { |
1065 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1066 | stream ? "capture" : "playback"); | |
1067 | continue; | |
1068 | } | |
1069 | ||
01d7584c LG |
1070 | /* is this op for this BE ? */ |
1071 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1072 | continue; | |
1073 | ||
1074 | /* first time the dpcm is open ? */ | |
1075 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1076 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1077 | stream ? "capture" : "playback", |
1078 | be->dpcm[stream].state); | |
1079 | ||
1080 | if (be->dpcm[stream].users++ != 0) | |
1081 | continue; | |
1082 | ||
1083 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1084 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1085 | continue; | |
1086 | ||
2062b4c5 RKAL |
1087 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1088 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c LG |
1089 | |
1090 | be_substream->runtime = be->dpcm[stream].runtime; | |
1091 | err = soc_pcm_open(be_substream); | |
1092 | if (err < 0) { | |
103d84a3 | 1093 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1094 | be->dpcm[stream].users--; |
1095 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1096 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1097 | stream ? "capture" : "playback", |
1098 | be->dpcm[stream].state); | |
1099 | ||
1100 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1101 | goto unwind; | |
1102 | } | |
1103 | ||
1104 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1105 | count++; | |
1106 | } | |
1107 | ||
1108 | return count; | |
1109 | ||
1110 | unwind: | |
1111 | /* disable any enabled and non active backends */ | |
1112 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1113 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1114 | struct snd_pcm_substream *be_substream = | |
1115 | snd_soc_dpcm_get_substream(be, stream); | |
1116 | ||
1117 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1118 | continue; | |
1119 | ||
1120 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1121 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1122 | stream ? "capture" : "playback", |
1123 | be->dpcm[stream].state); | |
1124 | ||
1125 | if (--be->dpcm[stream].users != 0) | |
1126 | continue; | |
1127 | ||
1128 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1129 | continue; | |
1130 | ||
1131 | soc_pcm_close(be_substream); | |
1132 | be_substream->runtime = NULL; | |
1133 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1134 | } | |
1135 | ||
1136 | return err; | |
1137 | } | |
1138 | ||
45c0a188 | 1139 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1140 | { |
1141 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1142 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1143 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1144 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1145 | ||
1146 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1147 | runtime->hw.rate_min = cpu_dai_drv->playback.rate_min; | |
1148 | runtime->hw.rate_max = cpu_dai_drv->playback.rate_max; | |
1149 | runtime->hw.channels_min = cpu_dai_drv->playback.channels_min; | |
1150 | runtime->hw.channels_max = cpu_dai_drv->playback.channels_max; | |
1151 | runtime->hw.formats &= cpu_dai_drv->playback.formats; | |
1152 | runtime->hw.rates = cpu_dai_drv->playback.rates; | |
1153 | } else { | |
1154 | runtime->hw.rate_min = cpu_dai_drv->capture.rate_min; | |
1155 | runtime->hw.rate_max = cpu_dai_drv->capture.rate_max; | |
1156 | runtime->hw.channels_min = cpu_dai_drv->capture.channels_min; | |
1157 | runtime->hw.channels_max = cpu_dai_drv->capture.channels_max; | |
1158 | runtime->hw.formats &= cpu_dai_drv->capture.formats; | |
1159 | runtime->hw.rates = cpu_dai_drv->capture.rates; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1164 | { | |
1165 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1166 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1167 | int stream = fe_substream->stream, ret = 0; | |
1168 | ||
1169 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1170 | ||
1171 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1172 | if (ret < 0) { | |
103d84a3 | 1173 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1174 | goto be_err; |
1175 | } | |
1176 | ||
103d84a3 | 1177 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1178 | |
1179 | /* start the DAI frontend */ | |
1180 | ret = soc_pcm_open(fe_substream); | |
1181 | if (ret < 0) { | |
103d84a3 | 1182 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1183 | goto unwind; |
1184 | } | |
1185 | ||
1186 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1187 | ||
1188 | dpcm_set_fe_runtime(fe_substream); | |
1189 | snd_pcm_limit_hw_rates(runtime); | |
1190 | ||
1191 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1192 | return 0; | |
1193 | ||
1194 | unwind: | |
1195 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1196 | be_err: | |
1197 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1198 | return ret; | |
1199 | } | |
1200 | ||
1201 | static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) | |
1202 | { | |
1203 | struct snd_soc_dpcm *dpcm; | |
1204 | ||
1205 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1206 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1207 | ||
1208 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1209 | struct snd_pcm_substream *be_substream = | |
1210 | snd_soc_dpcm_get_substream(be, stream); | |
1211 | ||
1212 | /* is this op for this BE ? */ | |
1213 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1214 | continue; | |
1215 | ||
1216 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1217 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1218 | stream ? "capture" : "playback", |
1219 | be->dpcm[stream].state); | |
1220 | ||
1221 | if (--be->dpcm[stream].users != 0) | |
1222 | continue; | |
1223 | ||
1224 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1225 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1226 | continue; | |
1227 | ||
103d84a3 | 1228 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1229 | dpcm->fe->dai_link->name); |
1230 | ||
1231 | soc_pcm_close(be_substream); | |
1232 | be_substream->runtime = NULL; | |
1233 | ||
1234 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1235 | } | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1240 | { | |
1241 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1242 | int stream = substream->stream; | |
1243 | ||
1244 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1245 | ||
1246 | /* shutdown the BEs */ | |
1247 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1248 | ||
103d84a3 | 1249 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1250 | |
1251 | /* now shutdown the frontend */ | |
1252 | soc_pcm_close(substream); | |
1253 | ||
1254 | /* run the stream event for each BE */ | |
1255 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1256 | ||
1257 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1258 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) | |
1263 | { | |
1264 | struct snd_soc_dpcm *dpcm; | |
1265 | ||
1266 | /* only hw_params backends that are either sinks or sources | |
1267 | * to this frontend DAI */ | |
1268 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1269 | ||
1270 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1271 | struct snd_pcm_substream *be_substream = | |
1272 | snd_soc_dpcm_get_substream(be, stream); | |
1273 | ||
1274 | /* is this op for this BE ? */ | |
1275 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1276 | continue; | |
1277 | ||
1278 | /* only free hw when no longer used - check all FEs */ | |
1279 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1280 | continue; | |
1281 | ||
1282 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1283 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1284 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1285 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1286 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1287 | continue; | |
1288 | ||
103d84a3 | 1289 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1290 | dpcm->fe->dai_link->name); |
1291 | ||
1292 | soc_pcm_hw_free(be_substream); | |
1293 | ||
1294 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1295 | } | |
1296 | ||
1297 | return 0; | |
1298 | } | |
1299 | ||
45c0a188 | 1300 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1301 | { |
1302 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1303 | int err, stream = substream->stream; | |
1304 | ||
1305 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1306 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1307 | ||
103d84a3 | 1308 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1309 | |
1310 | /* call hw_free on the frontend */ | |
1311 | err = soc_pcm_hw_free(substream); | |
1312 | if (err < 0) | |
103d84a3 | 1313 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1314 | fe->dai_link->name); |
1315 | ||
1316 | /* only hw_params backends that are either sinks or sources | |
1317 | * to this frontend DAI */ | |
1318 | err = dpcm_be_dai_hw_free(fe, stream); | |
1319 | ||
1320 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1321 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1322 | ||
1323 | mutex_unlock(&fe->card->mutex); | |
1324 | return 0; | |
1325 | } | |
1326 | ||
1327 | static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) | |
1328 | { | |
1329 | struct snd_soc_dpcm *dpcm; | |
1330 | int ret; | |
1331 | ||
1332 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1333 | ||
1334 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1335 | struct snd_pcm_substream *be_substream = | |
1336 | snd_soc_dpcm_get_substream(be, stream); | |
1337 | ||
1338 | /* is this op for this BE ? */ | |
1339 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1340 | continue; | |
1341 | ||
1342 | /* only allow hw_params() if no connected FEs are running */ | |
1343 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1344 | continue; | |
1345 | ||
1346 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1347 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1348 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1349 | continue; | |
1350 | ||
103d84a3 | 1351 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1352 | dpcm->fe->dai_link->name); |
1353 | ||
1354 | /* copy params for each dpcm */ | |
1355 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1356 | sizeof(struct snd_pcm_hw_params)); | |
1357 | ||
1358 | /* perform any hw_params fixups */ | |
1359 | if (be->dai_link->be_hw_params_fixup) { | |
1360 | ret = be->dai_link->be_hw_params_fixup(be, | |
1361 | &dpcm->hw_params); | |
1362 | if (ret < 0) { | |
1363 | dev_err(be->dev, | |
103d84a3 | 1364 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1365 | ret); |
1366 | goto unwind; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1371 | if (ret < 0) { | |
1372 | dev_err(dpcm->be->dev, | |
103d84a3 | 1373 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1374 | goto unwind; |
1375 | } | |
1376 | ||
1377 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1378 | } | |
1379 | return 0; | |
1380 | ||
1381 | unwind: | |
1382 | /* disable any enabled and non active backends */ | |
1383 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1384 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1385 | struct snd_pcm_substream *be_substream = | |
1386 | snd_soc_dpcm_get_substream(be, stream); | |
1387 | ||
1388 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1389 | continue; | |
1390 | ||
1391 | /* only allow hw_free() if no connected FEs are running */ | |
1392 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1393 | continue; | |
1394 | ||
1395 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1396 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1397 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1398 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1399 | continue; | |
1400 | ||
1401 | soc_pcm_hw_free(be_substream); | |
1402 | } | |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
45c0a188 MB |
1407 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1408 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1409 | { |
1410 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1411 | int ret, stream = substream->stream; | |
1412 | ||
1413 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1414 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1415 | ||
1416 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1417 | sizeof(struct snd_pcm_hw_params)); | |
1418 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1419 | if (ret < 0) { | |
103d84a3 | 1420 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1421 | goto out; |
1422 | } | |
1423 | ||
103d84a3 | 1424 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1425 | fe->dai_link->name, params_rate(params), |
1426 | params_channels(params), params_format(params)); | |
1427 | ||
1428 | /* call hw_params on the frontend */ | |
1429 | ret = soc_pcm_hw_params(substream, params); | |
1430 | if (ret < 0) { | |
103d84a3 | 1431 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1432 | dpcm_be_dai_hw_free(fe, stream); |
1433 | } else | |
1434 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1435 | ||
1436 | out: | |
1437 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1438 | mutex_unlock(&fe->card->mutex); | |
1439 | return ret; | |
1440 | } | |
1441 | ||
1442 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1443 | struct snd_pcm_substream *substream, int cmd) | |
1444 | { | |
1445 | int ret; | |
1446 | ||
103d84a3 | 1447 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1448 | dpcm->fe->dai_link->name, cmd); |
1449 | ||
1450 | ret = soc_pcm_trigger(substream, cmd); | |
1451 | if (ret < 0) | |
103d84a3 | 1452 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1453 | |
1454 | return ret; | |
1455 | } | |
1456 | ||
45c0a188 MB |
1457 | static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
1458 | int cmd) | |
01d7584c LG |
1459 | { |
1460 | struct snd_soc_dpcm *dpcm; | |
1461 | int ret = 0; | |
1462 | ||
1463 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1464 | ||
1465 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1466 | struct snd_pcm_substream *be_substream = | |
1467 | snd_soc_dpcm_get_substream(be, stream); | |
1468 | ||
1469 | /* is this op for this BE ? */ | |
1470 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1471 | continue; | |
1472 | ||
1473 | switch (cmd) { | |
1474 | case SNDRV_PCM_TRIGGER_START: | |
1475 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1476 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1477 | continue; | |
1478 | ||
1479 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1480 | if (ret) | |
1481 | return ret; | |
1482 | ||
1483 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1484 | break; | |
1485 | case SNDRV_PCM_TRIGGER_RESUME: | |
1486 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1487 | continue; | |
1488 | ||
1489 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1490 | if (ret) | |
1491 | return ret; | |
1492 | ||
1493 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1494 | break; | |
1495 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1496 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1497 | continue; | |
1498 | ||
1499 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1500 | if (ret) | |
1501 | return ret; | |
1502 | ||
1503 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1504 | break; | |
1505 | case SNDRV_PCM_TRIGGER_STOP: | |
1506 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1507 | continue; | |
1508 | ||
1509 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1510 | continue; | |
1511 | ||
1512 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1513 | if (ret) | |
1514 | return ret; | |
1515 | ||
1516 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1517 | break; | |
1518 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1519 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1520 | continue; | |
1521 | ||
1522 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1523 | continue; | |
1524 | ||
1525 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1526 | if (ret) | |
1527 | return ret; | |
1528 | ||
1529 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1530 | break; | |
1531 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1532 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1533 | continue; | |
1534 | ||
1535 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1536 | continue; | |
1537 | ||
1538 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1539 | if (ret) | |
1540 | return ret; | |
1541 | ||
1542 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1543 | break; | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | return ret; | |
1548 | } | |
1549 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1550 | ||
45c0a188 | 1551 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1552 | { |
1553 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1554 | int stream = substream->stream, ret; | |
1555 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1556 | ||
1557 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1558 | ||
1559 | switch (trigger) { | |
1560 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1561 | /* call trigger on the frontend before the backend. */ | |
1562 | ||
103d84a3 | 1563 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1564 | fe->dai_link->name, cmd); |
1565 | ||
1566 | ret = soc_pcm_trigger(substream, cmd); | |
1567 | if (ret < 0) { | |
103d84a3 | 1568 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1569 | goto out; |
1570 | } | |
1571 | ||
1572 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1573 | break; | |
1574 | case SND_SOC_DPCM_TRIGGER_POST: | |
1575 | /* call trigger on the frontend after the backend. */ | |
1576 | ||
1577 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1578 | if (ret < 0) { | |
103d84a3 | 1579 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1580 | goto out; |
1581 | } | |
1582 | ||
103d84a3 | 1583 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1584 | fe->dai_link->name, cmd); |
1585 | ||
1586 | ret = soc_pcm_trigger(substream, cmd); | |
1587 | break; | |
07bf84aa LG |
1588 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1589 | /* bespoke trigger() - handles both FE and BEs */ | |
1590 | ||
103d84a3 | 1591 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1592 | fe->dai_link->name, cmd); |
1593 | ||
1594 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1595 | if (ret < 0) { | |
103d84a3 | 1596 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1597 | goto out; |
1598 | } | |
1599 | break; | |
01d7584c | 1600 | default: |
103d84a3 | 1601 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1602 | fe->dai_link->name); |
1603 | ret = -EINVAL; | |
1604 | goto out; | |
1605 | } | |
1606 | ||
1607 | switch (cmd) { | |
1608 | case SNDRV_PCM_TRIGGER_START: | |
1609 | case SNDRV_PCM_TRIGGER_RESUME: | |
1610 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1611 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1612 | break; | |
1613 | case SNDRV_PCM_TRIGGER_STOP: | |
1614 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1615 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1616 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1617 | break; | |
1618 | } | |
1619 | ||
1620 | out: | |
1621 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1622 | return ret; | |
1623 | } | |
1624 | ||
1625 | static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) | |
1626 | { | |
1627 | struct snd_soc_dpcm *dpcm; | |
1628 | int ret = 0; | |
1629 | ||
1630 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1631 | ||
1632 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1633 | struct snd_pcm_substream *be_substream = | |
1634 | snd_soc_dpcm_get_substream(be, stream); | |
1635 | ||
1636 | /* is this op for this BE ? */ | |
1637 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1638 | continue; | |
1639 | ||
1640 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1641 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1642 | continue; | |
1643 | ||
103d84a3 | 1644 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1645 | dpcm->fe->dai_link->name); |
1646 | ||
1647 | ret = soc_pcm_prepare(be_substream); | |
1648 | if (ret < 0) { | |
103d84a3 | 1649 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1650 | ret); |
1651 | break; | |
1652 | } | |
1653 | ||
1654 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1655 | } | |
1656 | return ret; | |
1657 | } | |
1658 | ||
45c0a188 | 1659 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1660 | { |
1661 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1662 | int stream = substream->stream, ret = 0; | |
1663 | ||
1664 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1665 | ||
103d84a3 | 1666 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1667 | |
1668 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1669 | ||
1670 | /* there is no point preparing this FE if there are no BEs */ | |
1671 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1672 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1673 | fe->dai_link->name); |
1674 | ret = -EINVAL; | |
1675 | goto out; | |
1676 | } | |
1677 | ||
1678 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1679 | if (ret < 0) | |
1680 | goto out; | |
1681 | ||
1682 | /* call prepare on the frontend */ | |
1683 | ret = soc_pcm_prepare(substream); | |
1684 | if (ret < 0) { | |
103d84a3 | 1685 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1686 | fe->dai_link->name); |
1687 | goto out; | |
1688 | } | |
1689 | ||
1690 | /* run the stream event for each BE */ | |
1691 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1692 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1693 | ||
1694 | out: | |
1695 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1696 | mutex_unlock(&fe->card->mutex); | |
1697 | ||
1698 | return ret; | |
1699 | } | |
1700 | ||
be3f3f2c LG |
1701 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1702 | unsigned int cmd, void *arg) | |
1703 | { | |
1704 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1705 | struct snd_soc_platform *platform = rtd->platform; | |
1706 | ||
c5914b0a | 1707 | if (platform->driver->ops && platform->driver->ops->ioctl) |
be3f3f2c LG |
1708 | return platform->driver->ops->ioctl(substream, cmd, arg); |
1709 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1710 | } | |
1711 | ||
618dae11 LG |
1712 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1713 | { | |
07bf84aa LG |
1714 | struct snd_pcm_substream *substream = |
1715 | snd_soc_dpcm_get_substream(fe, stream); | |
1716 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1717 | int err; |
1718 | ||
103d84a3 | 1719 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1720 | stream ? "capture" : "playback", fe->dai_link->name); |
1721 | ||
07bf84aa LG |
1722 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1723 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1724 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1725 | fe->dai_link->name); |
1726 | ||
1727 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1728 | if (err < 0) | |
103d84a3 | 1729 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1730 | } else { |
103d84a3 | 1731 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1732 | fe->dai_link->name); |
1733 | ||
1734 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1735 | if (err < 0) | |
103d84a3 | 1736 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1737 | } |
618dae11 LG |
1738 | |
1739 | err = dpcm_be_dai_hw_free(fe, stream); | |
1740 | if (err < 0) | |
103d84a3 | 1741 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1742 | |
1743 | err = dpcm_be_dai_shutdown(fe, stream); | |
1744 | if (err < 0) | |
103d84a3 | 1745 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1746 | |
1747 | /* run the stream event for each BE */ | |
1748 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1749 | ||
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1754 | { | |
07bf84aa LG |
1755 | struct snd_pcm_substream *substream = |
1756 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1757 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1758 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1759 | int ret; |
1760 | ||
103d84a3 | 1761 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1762 | stream ? "capture" : "playback", fe->dai_link->name); |
1763 | ||
1764 | /* Only start the BE if the FE is ready */ | |
1765 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1766 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1767 | return -EINVAL; | |
1768 | ||
1769 | /* startup must always be called for new BEs */ | |
1770 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1771 | if (ret < 0) |
618dae11 | 1772 | goto disconnect; |
618dae11 LG |
1773 | |
1774 | /* keep going if FE state is > open */ | |
1775 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1776 | return 0; | |
01d7584c | 1777 | |
618dae11 | 1778 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1779 | if (ret < 0) |
618dae11 | 1780 | goto close; |
618dae11 LG |
1781 | |
1782 | /* keep going if FE state is > hw_params */ | |
1783 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1784 | return 0; | |
1785 | ||
1786 | ||
1787 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1788 | if (ret < 0) |
618dae11 | 1789 | goto hw_free; |
618dae11 LG |
1790 | |
1791 | /* run the stream event for each BE */ | |
1792 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1793 | ||
1794 | /* keep going if FE state is > prepare */ | |
1795 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1796 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1797 | return 0; | |
1798 | ||
07bf84aa LG |
1799 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1800 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1801 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1802 | fe->dai_link->name); |
618dae11 | 1803 | |
07bf84aa LG |
1804 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1805 | if (ret < 0) { | |
103d84a3 | 1806 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1807 | goto hw_free; |
1808 | } | |
1809 | } else { | |
103d84a3 | 1810 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1811 | fe->dai_link->name); |
1812 | ||
1813 | ret = dpcm_be_dai_trigger(fe, stream, | |
1814 | SNDRV_PCM_TRIGGER_START); | |
1815 | if (ret < 0) { | |
103d84a3 | 1816 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1817 | goto hw_free; |
1818 | } | |
618dae11 LG |
1819 | } |
1820 | ||
1821 | return 0; | |
1822 | ||
1823 | hw_free: | |
1824 | dpcm_be_dai_hw_free(fe, stream); | |
1825 | close: | |
1826 | dpcm_be_dai_shutdown(fe, stream); | |
1827 | disconnect: | |
1828 | /* disconnect any non started BEs */ | |
1829 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1830 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1831 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1832 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1833 | } | |
1834 | ||
1835 | return ret; | |
1836 | } | |
1837 | ||
1838 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1839 | { | |
1840 | int ret; | |
1841 | ||
1842 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1843 | ret = dpcm_run_update_startup(fe, stream); | |
1844 | if (ret < 0) | |
103d84a3 | 1845 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1846 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1847 | ||
1848 | return ret; | |
1849 | } | |
1850 | ||
1851 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1852 | { | |
1853 | int ret; | |
1854 | ||
1855 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1856 | ret = dpcm_run_update_shutdown(fe, stream); | |
1857 | if (ret < 0) | |
103d84a3 | 1858 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1859 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1860 | ||
1861 | return ret; | |
1862 | } | |
1863 | ||
1864 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1865 | * any DAI links. | |
1866 | */ | |
c3f48ae6 | 1867 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 1868 | { |
618dae11 LG |
1869 | int i, old, new, paths; |
1870 | ||
618dae11 LG |
1871 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
1872 | for (i = 0; i < card->num_rtd; i++) { | |
1873 | struct snd_soc_dapm_widget_list *list; | |
1874 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1875 | ||
1876 | /* make sure link is FE */ | |
1877 | if (!fe->dai_link->dynamic) | |
1878 | continue; | |
1879 | ||
1880 | /* only check active links */ | |
1881 | if (!fe->cpu_dai->active) | |
1882 | continue; | |
1883 | ||
1884 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1885 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1886 | fe->dai_link->name); |
1887 | ||
1888 | /* skip if FE doesn't have playback capability */ | |
1889 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1890 | goto capture; | |
1891 | ||
1892 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1893 | if (paths < 0) { | |
103d84a3 | 1894 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1895 | fe->dai_link->name, "playback"); |
1896 | mutex_unlock(&card->mutex); | |
1897 | return paths; | |
1898 | } | |
1899 | ||
1900 | /* update any new playback paths */ | |
1901 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
1902 | if (new) { | |
1903 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1904 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1905 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1906 | } | |
1907 | ||
1908 | /* update any old playback paths */ | |
1909 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
1910 | if (old) { | |
1911 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1912 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1913 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
1914 | } | |
1915 | ||
1916 | capture: | |
1917 | /* skip if FE doesn't have capture capability */ | |
1918 | if (!fe->cpu_dai->driver->capture.channels_min) | |
1919 | continue; | |
1920 | ||
1921 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
1922 | if (paths < 0) { | |
103d84a3 | 1923 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1924 | fe->dai_link->name, "capture"); |
1925 | mutex_unlock(&card->mutex); | |
1926 | return paths; | |
1927 | } | |
1928 | ||
1929 | /* update any new capture paths */ | |
1930 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
1931 | if (new) { | |
1932 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1933 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1934 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1935 | } | |
1936 | ||
1937 | /* update any old capture paths */ | |
1938 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
1939 | if (old) { | |
1940 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1941 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1942 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
1943 | } | |
1944 | ||
1945 | dpcm_path_put(&list); | |
1946 | } | |
1947 | ||
1948 | mutex_unlock(&card->mutex); | |
1949 | return 0; | |
1950 | } | |
01d7584c LG |
1951 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
1952 | { | |
1953 | struct snd_soc_dpcm *dpcm; | |
1954 | struct list_head *clients = | |
1955 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
1956 | ||
1957 | list_for_each_entry(dpcm, clients, list_be) { | |
1958 | ||
1959 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1960 | struct snd_soc_dai *dai = be->codec_dai; | |
1961 | struct snd_soc_dai_driver *drv = dai->driver; | |
1962 | ||
1963 | if (be->dai_link->ignore_suspend) | |
1964 | continue; | |
1965 | ||
103d84a3 | 1966 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c | 1967 | |
c5914b0a MB |
1968 | if (drv->ops && drv->ops->digital_mute && dai->playback_active) |
1969 | drv->ops->digital_mute(dai, mute); | |
01d7584c LG |
1970 | } |
1971 | ||
1972 | return 0; | |
1973 | } | |
1974 | ||
45c0a188 | 1975 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
1976 | { |
1977 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1978 | struct snd_soc_dpcm *dpcm; | |
1979 | struct snd_soc_dapm_widget_list *list; | |
1980 | int ret; | |
1981 | int stream = fe_substream->stream; | |
1982 | ||
1983 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1984 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
1985 | ||
1986 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
103d84a3 | 1987 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 1988 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
1989 | } |
1990 | ||
1991 | /* calculate valid and active FE <-> BE dpcms */ | |
1992 | dpcm_process_paths(fe, stream, &list, 1); | |
1993 | ||
1994 | ret = dpcm_fe_dai_startup(fe_substream); | |
1995 | if (ret < 0) { | |
1996 | /* clean up all links */ | |
1997 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1998 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1999 | ||
2000 | dpcm_be_disconnect(fe, stream); | |
2001 | fe->dpcm[stream].runtime = NULL; | |
2002 | } | |
2003 | ||
2004 | dpcm_clear_pending_state(fe, stream); | |
2005 | dpcm_path_put(&list); | |
2006 | mutex_unlock(&fe->card->mutex); | |
2007 | return ret; | |
2008 | } | |
2009 | ||
45c0a188 | 2010 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2011 | { |
2012 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2013 | struct snd_soc_dpcm *dpcm; | |
2014 | int stream = fe_substream->stream, ret; | |
2015 | ||
2016 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2017 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
2018 | ||
2019 | /* mark FE's links ready to prune */ | |
2020 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2021 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2022 | ||
2023 | dpcm_be_disconnect(fe, stream); | |
2024 | ||
2025 | fe->dpcm[stream].runtime = NULL; | |
2026 | mutex_unlock(&fe->card->mutex); | |
2027 | return ret; | |
2028 | } | |
2029 | ||
ddee627c LG |
2030 | /* create a new pcm */ |
2031 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2032 | { | |
ddee627c LG |
2033 | struct snd_soc_platform *platform = rtd->platform; |
2034 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2035 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2036 | struct snd_pcm *pcm; | |
2037 | char new_name[64]; | |
2038 | int ret = 0, playback = 0, capture = 0; | |
2039 | ||
01d7584c | 2040 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
1e9de42f LG |
2041 | playback = rtd->dai_link->dpcm_playback; |
2042 | capture = rtd->dai_link->dpcm_capture; | |
01d7584c | 2043 | } else { |
05679092 MB |
2044 | if (codec_dai->driver->playback.channels_min && |
2045 | cpu_dai->driver->playback.channels_min) | |
01d7584c | 2046 | playback = 1; |
05679092 MB |
2047 | if (codec_dai->driver->capture.channels_min && |
2048 | cpu_dai->driver->capture.channels_min) | |
01d7584c LG |
2049 | capture = 1; |
2050 | } | |
2051 | ||
d6bead02 FE |
2052 | if (rtd->dai_link->playback_only) { |
2053 | playback = 1; | |
2054 | capture = 0; | |
2055 | } | |
2056 | ||
2057 | if (rtd->dai_link->capture_only) { | |
2058 | playback = 0; | |
2059 | capture = 1; | |
2060 | } | |
2061 | ||
01d7584c LG |
2062 | /* create the PCM */ |
2063 | if (rtd->dai_link->no_pcm) { | |
2064 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2065 | rtd->dai_link->stream_name); | |
2066 | ||
2067 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2068 | playback, capture, &pcm); | |
2069 | } else { | |
2070 | if (rtd->dai_link->dynamic) | |
2071 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2072 | rtd->dai_link->stream_name); | |
2073 | else | |
2074 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2075 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2076 | ||
2077 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2078 | capture, &pcm); | |
2079 | } | |
ddee627c | 2080 | if (ret < 0) { |
103d84a3 | 2081 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2082 | rtd->dai_link->name); |
ddee627c LG |
2083 | return ret; |
2084 | } | |
103d84a3 | 2085 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2086 | |
2087 | /* DAPM dai link stream work */ | |
2088 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2089 | ||
2090 | rtd->pcm = pcm; | |
2091 | pcm->private_data = rtd; | |
01d7584c LG |
2092 | |
2093 | if (rtd->dai_link->no_pcm) { | |
2094 | if (playback) | |
2095 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2096 | if (capture) | |
2097 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2098 | goto out; | |
2099 | } | |
2100 | ||
2101 | /* ASoC PCM operations */ | |
2102 | if (rtd->dai_link->dynamic) { | |
2103 | rtd->ops.open = dpcm_fe_dai_open; | |
2104 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2105 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2106 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2107 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2108 | rtd->ops.close = dpcm_fe_dai_close; | |
2109 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2110 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2111 | } else { |
2112 | rtd->ops.open = soc_pcm_open; | |
2113 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2114 | rtd->ops.prepare = soc_pcm_prepare; | |
2115 | rtd->ops.trigger = soc_pcm_trigger; | |
2116 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2117 | rtd->ops.close = soc_pcm_close; | |
2118 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2119 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2120 | } |
2121 | ||
ddee627c | 2122 | if (platform->driver->ops) { |
01d7584c LG |
2123 | rtd->ops.ack = platform->driver->ops->ack; |
2124 | rtd->ops.copy = platform->driver->ops->copy; | |
2125 | rtd->ops.silence = platform->driver->ops->silence; | |
2126 | rtd->ops.page = platform->driver->ops->page; | |
2127 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2128 | } |
2129 | ||
2130 | if (playback) | |
01d7584c | 2131 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2132 | |
2133 | if (capture) | |
01d7584c | 2134 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2135 | |
2136 | if (platform->driver->pcm_new) { | |
2137 | ret = platform->driver->pcm_new(rtd); | |
2138 | if (ret < 0) { | |
b1bc7b3c MB |
2139 | dev_err(platform->dev, |
2140 | "ASoC: pcm constructor failed: %d\n", | |
2141 | ret); | |
ddee627c LG |
2142 | return ret; |
2143 | } | |
2144 | } | |
2145 | ||
2146 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2147 | out: |
7cc302d2 | 2148 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2149 | cpu_dai->name); |
2150 | return ret; | |
2151 | } | |
01d7584c LG |
2152 | |
2153 | /* is the current PCM operation for this FE ? */ | |
2154 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2155 | { | |
2156 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2157 | return 1; | |
2158 | return 0; | |
2159 | } | |
2160 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2161 | ||
2162 | /* is the current PCM operation for this BE ? */ | |
2163 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2164 | struct snd_soc_pcm_runtime *be, int stream) | |
2165 | { | |
2166 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2167 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2168 | be->dpcm[stream].runtime_update)) | |
2169 | return 1; | |
2170 | return 0; | |
2171 | } | |
2172 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2173 | ||
2174 | /* get the substream for this BE */ | |
2175 | struct snd_pcm_substream * | |
2176 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2177 | { | |
2178 | return be->pcm->streams[stream].substream; | |
2179 | } | |
2180 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2181 | ||
2182 | /* get the BE runtime state */ | |
2183 | enum snd_soc_dpcm_state | |
2184 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2185 | { | |
2186 | return be->dpcm[stream].state; | |
2187 | } | |
2188 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2189 | ||
2190 | /* set the BE runtime state */ | |
2191 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2192 | int stream, enum snd_soc_dpcm_state state) | |
2193 | { | |
2194 | be->dpcm[stream].state = state; | |
2195 | } | |
2196 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2197 | ||
2198 | /* | |
2199 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2200 | * are not running, paused or suspended for the specified stream direction. | |
2201 | */ | |
2202 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2203 | struct snd_soc_pcm_runtime *be, int stream) | |
2204 | { | |
2205 | struct snd_soc_dpcm *dpcm; | |
2206 | int state; | |
2207 | ||
2208 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2209 | ||
2210 | if (dpcm->fe == fe) | |
2211 | continue; | |
2212 | ||
2213 | state = dpcm->fe->dpcm[stream].state; | |
2214 | if (state == SND_SOC_DPCM_STATE_START || | |
2215 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2216 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2217 | return 0; | |
2218 | } | |
2219 | ||
2220 | /* it's safe to free/stop this BE DAI */ | |
2221 | return 1; | |
2222 | } | |
2223 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2224 | ||
2225 | /* | |
2226 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2227 | * running, paused or suspended for the specified stream direction. | |
2228 | */ | |
2229 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2230 | struct snd_soc_pcm_runtime *be, int stream) | |
2231 | { | |
2232 | struct snd_soc_dpcm *dpcm; | |
2233 | int state; | |
2234 | ||
2235 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2236 | ||
2237 | if (dpcm->fe == fe) | |
2238 | continue; | |
2239 | ||
2240 | state = dpcm->fe->dpcm[stream].state; | |
2241 | if (state == SND_SOC_DPCM_STATE_START || | |
2242 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2243 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2244 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2245 | return 0; | |
2246 | } | |
2247 | ||
2248 | /* it's safe to change hw_params */ | |
2249 | return 1; | |
2250 | } | |
2251 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2252 | |
07bf84aa LG |
2253 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2254 | int cmd, struct snd_soc_platform *platform) | |
2255 | { | |
c5914b0a | 2256 | if (platform->driver->ops && platform->driver->ops->trigger) |
07bf84aa LG |
2257 | return platform->driver->ops->trigger(substream, cmd); |
2258 | return 0; | |
2259 | } | |
2260 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2261 | ||
f86dcef8 LG |
2262 | #ifdef CONFIG_DEBUG_FS |
2263 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2264 | { | |
2265 | switch (state) { | |
2266 | case SND_SOC_DPCM_STATE_NEW: | |
2267 | return "new"; | |
2268 | case SND_SOC_DPCM_STATE_OPEN: | |
2269 | return "open"; | |
2270 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2271 | return "hw_params"; | |
2272 | case SND_SOC_DPCM_STATE_PREPARE: | |
2273 | return "prepare"; | |
2274 | case SND_SOC_DPCM_STATE_START: | |
2275 | return "start"; | |
2276 | case SND_SOC_DPCM_STATE_STOP: | |
2277 | return "stop"; | |
2278 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2279 | return "suspend"; | |
2280 | case SND_SOC_DPCM_STATE_PAUSED: | |
2281 | return "paused"; | |
2282 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2283 | return "hw_free"; | |
2284 | case SND_SOC_DPCM_STATE_CLOSE: | |
2285 | return "close"; | |
2286 | } | |
2287 | ||
2288 | return "unknown"; | |
2289 | } | |
2290 | ||
f86dcef8 LG |
2291 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2292 | int stream, char *buf, size_t size) | |
2293 | { | |
2294 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2295 | struct snd_soc_dpcm *dpcm; | |
2296 | ssize_t offset = 0; | |
2297 | ||
2298 | /* FE state */ | |
2299 | offset += snprintf(buf + offset, size - offset, | |
2300 | "[%s - %s]\n", fe->dai_link->name, | |
2301 | stream ? "Capture" : "Playback"); | |
2302 | ||
2303 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2304 | dpcm_state_string(fe->dpcm[stream].state)); | |
2305 | ||
2306 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2307 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2308 | offset += snprintf(buf + offset, size - offset, | |
2309 | "Hardware Params: " | |
2310 | "Format = %s, Channels = %d, Rate = %d\n", | |
2311 | snd_pcm_format_name(params_format(params)), | |
2312 | params_channels(params), | |
2313 | params_rate(params)); | |
2314 | ||
2315 | /* BEs state */ | |
2316 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2317 | ||
2318 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2319 | offset += snprintf(buf + offset, size - offset, | |
2320 | " No active DSP links\n"); | |
2321 | goto out; | |
2322 | } | |
2323 | ||
2324 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2325 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2326 | params = &dpcm->hw_params; | |
2327 | ||
2328 | offset += snprintf(buf + offset, size - offset, | |
2329 | "- %s\n", be->dai_link->name); | |
2330 | ||
2331 | offset += snprintf(buf + offset, size - offset, | |
2332 | " State: %s\n", | |
2333 | dpcm_state_string(be->dpcm[stream].state)); | |
2334 | ||
2335 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2336 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2337 | offset += snprintf(buf + offset, size - offset, | |
2338 | " Hardware Params: " | |
2339 | "Format = %s, Channels = %d, Rate = %d\n", | |
2340 | snd_pcm_format_name(params_format(params)), | |
2341 | params_channels(params), | |
2342 | params_rate(params)); | |
2343 | } | |
2344 | ||
2345 | out: | |
2346 | return offset; | |
2347 | } | |
2348 | ||
2349 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2350 | size_t count, loff_t *ppos) | |
2351 | { | |
2352 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2353 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2354 | char *buf; | |
2355 | ||
2356 | buf = kmalloc(out_count, GFP_KERNEL); | |
2357 | if (!buf) | |
2358 | return -ENOMEM; | |
2359 | ||
2360 | if (fe->cpu_dai->driver->playback.channels_min) | |
2361 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2362 | buf + offset, out_count - offset); | |
2363 | ||
2364 | if (fe->cpu_dai->driver->capture.channels_min) | |
2365 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2366 | buf + offset, out_count - offset); | |
2367 | ||
f57b8488 | 2368 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2369 | |
f57b8488 LG |
2370 | kfree(buf); |
2371 | return ret; | |
f86dcef8 LG |
2372 | } |
2373 | ||
2374 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2375 | .open = simple_open, |
f86dcef8 LG |
2376 | .read = dpcm_state_read_file, |
2377 | .llseek = default_llseek, | |
2378 | }; | |
2379 | ||
2380 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2381 | { | |
b3bba9a1 MB |
2382 | if (!rtd->dai_link) |
2383 | return 0; | |
2384 | ||
f86dcef8 LG |
2385 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2386 | rtd->card->debugfs_card_root); | |
2387 | if (!rtd->debugfs_dpcm_root) { | |
2388 | dev_dbg(rtd->dev, | |
2389 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2390 | rtd->dai_link->name); | |
2391 | return -EINVAL; | |
2392 | } | |
2393 | ||
f57b8488 | 2394 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2395 | rtd->debugfs_dpcm_root, |
2396 | rtd, &dpcm_state_fops); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | #endif |