2 * soc-pcm.c -- ALSA SoC PCM
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Authors: Liam Girdwood <lrg@ti.com>
10 * Mark Brown <broonie@opensource.wolfsonmicro.com>
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.
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/delay.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/slab.h>
24 #include <linux/workqueue.h>
25 #include <linux/export.h>
26 #include <linux/debugfs.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dpcm.h>
32 #include <sound/initval.h>
34 #define DPCM_MAX_BE_USERS 8
36 /* DPCM stream event, send event to FE and all active BEs. */
37 static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime
*fe
, int dir
,
40 struct snd_soc_dpcm
*dpcm
;
42 list_for_each_entry(dpcm
, &fe
->dpcm
[dir
].be_clients
, list_be
) {
44 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
46 dev_dbg(be
->dev
, "ASoC: BE %s event %d dir %d\n",
47 be
->dai_link
->name
, event
, dir
);
49 snd_soc_dapm_stream_event(be
, dir
, event
);
52 snd_soc_dapm_stream_event(fe
, dir
, event
);
57 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
,
58 struct snd_soc_dai
*soc_dai
)
60 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
63 if (!soc_dai
->driver
->symmetric_rates
&&
64 !rtd
->dai_link
->symmetric_rates
)
67 /* This can happen if multiple streams are starting simultaneously -
68 * the second can need to get its constraints before the first has
69 * picked a rate. Complain and allow the application to carry on.
72 dev_warn(soc_dai
->dev
,
73 "ASoC: Not enforcing symmetric_rates due to race\n");
77 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %dHz rate\n", soc_dai
->rate
);
79 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
80 SNDRV_PCM_HW_PARAM_RATE
,
81 soc_dai
->rate
, soc_dai
->rate
);
84 "ASoC: Unable to apply rate symmetry constraint: %d\n",
93 * List of sample sizes that might go over the bus for parameter
94 * application. There ought to be a wildcard sample size for things
95 * like the DAC/ADC resolution to use but there isn't right now.
97 static int sample_sizes
[] = {
101 static void soc_pcm_apply_msb(struct snd_pcm_substream
*substream
,
102 struct snd_soc_dai
*dai
)
106 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
107 bits
= dai
->driver
->playback
.sig_bits
;
109 bits
= dai
->driver
->capture
.sig_bits
;
114 for (i
= 0; i
< ARRAY_SIZE(sample_sizes
); i
++) {
115 if (bits
>= sample_sizes
[i
])
118 ret
= snd_pcm_hw_constraint_msbits(substream
->runtime
, 0,
119 sample_sizes
[i
], bits
);
122 "ASoC: Failed to set MSB %d/%d: %d\n",
123 bits
, sample_sizes
[i
], ret
);
128 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
129 * then initialized and any private data can be allocated. This also calls
130 * startup for the cpu DAI, platform, machine and codec DAI.
132 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
134 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
135 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
136 struct snd_soc_platform
*platform
= rtd
->platform
;
137 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
138 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
139 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
140 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
143 pm_runtime_get_sync(cpu_dai
->dev
);
144 pm_runtime_get_sync(codec_dai
->dev
);
145 pm_runtime_get_sync(platform
->dev
);
147 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
149 /* startup the audio subsystem */
150 if (cpu_dai
->driver
->ops
->startup
) {
151 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
153 dev_err(cpu_dai
->dev
, "ASoC: can't open interface"
154 " %s: %d\n", cpu_dai
->name
, ret
);
159 if (platform
->driver
->ops
&& platform
->driver
->ops
->open
) {
160 ret
= platform
->driver
->ops
->open(substream
);
162 dev_err(platform
->dev
, "ASoC: can't open platform"
163 " %s: %d\n", platform
->name
, ret
);
168 if (codec_dai
->driver
->ops
->startup
) {
169 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
171 dev_err(codec_dai
->dev
, "ASoC: can't open codec"
172 " %s: %d\n", codec_dai
->name
, ret
);
177 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
178 ret
= rtd
->dai_link
->ops
->startup(substream
);
180 pr_err("ASoC: %s startup failed: %d\n",
181 rtd
->dai_link
->name
, ret
);
186 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
187 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
)
190 /* Check that the codec and cpu DAIs are compatible */
191 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
192 runtime
->hw
.rate_min
=
193 max(codec_dai_drv
->playback
.rate_min
,
194 cpu_dai_drv
->playback
.rate_min
);
195 runtime
->hw
.rate_max
=
196 min(codec_dai_drv
->playback
.rate_max
,
197 cpu_dai_drv
->playback
.rate_max
);
198 runtime
->hw
.channels_min
=
199 max(codec_dai_drv
->playback
.channels_min
,
200 cpu_dai_drv
->playback
.channels_min
);
201 runtime
->hw
.channels_max
=
202 min(codec_dai_drv
->playback
.channels_max
,
203 cpu_dai_drv
->playback
.channels_max
);
204 runtime
->hw
.formats
=
205 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
207 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
208 if (codec_dai_drv
->playback
.rates
209 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
210 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
211 if (cpu_dai_drv
->playback
.rates
212 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
213 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
215 runtime
->hw
.rate_min
=
216 max(codec_dai_drv
->capture
.rate_min
,
217 cpu_dai_drv
->capture
.rate_min
);
218 runtime
->hw
.rate_max
=
219 min(codec_dai_drv
->capture
.rate_max
,
220 cpu_dai_drv
->capture
.rate_max
);
221 runtime
->hw
.channels_min
=
222 max(codec_dai_drv
->capture
.channels_min
,
223 cpu_dai_drv
->capture
.channels_min
);
224 runtime
->hw
.channels_max
=
225 min(codec_dai_drv
->capture
.channels_max
,
226 cpu_dai_drv
->capture
.channels_max
);
227 runtime
->hw
.formats
=
228 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
230 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
231 if (codec_dai_drv
->capture
.rates
232 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
233 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
234 if (cpu_dai_drv
->capture
.rates
235 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
236 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
240 snd_pcm_limit_hw_rates(runtime
);
241 if (!runtime
->hw
.rates
) {
242 printk(KERN_ERR
"ASoC: %s <-> %s No matching rates\n",
243 codec_dai
->name
, cpu_dai
->name
);
246 if (!runtime
->hw
.formats
) {
247 printk(KERN_ERR
"ASoC: %s <-> %s No matching formats\n",
248 codec_dai
->name
, cpu_dai
->name
);
251 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
||
252 runtime
->hw
.channels_min
> runtime
->hw
.channels_max
) {
253 printk(KERN_ERR
"ASoC: %s <-> %s No matching channels\n",
254 codec_dai
->name
, cpu_dai
->name
);
258 soc_pcm_apply_msb(substream
, codec_dai
);
259 soc_pcm_apply_msb(substream
, cpu_dai
);
261 /* Symmetry only applies if we've already got an active stream. */
262 if (cpu_dai
->active
) {
263 ret
= soc_pcm_apply_symmetry(substream
, cpu_dai
);
268 if (codec_dai
->active
) {
269 ret
= soc_pcm_apply_symmetry(substream
, codec_dai
);
274 pr_debug("ASoC: %s <-> %s info:\n",
275 codec_dai
->name
, cpu_dai
->name
);
276 pr_debug("ASoC: rate mask 0x%x\n", runtime
->hw
.rates
);
277 pr_debug("ASoC: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
278 runtime
->hw
.channels_max
);
279 pr_debug("ASoC: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
280 runtime
->hw
.rate_max
);
283 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
284 cpu_dai
->playback_active
++;
285 codec_dai
->playback_active
++;
287 cpu_dai
->capture_active
++;
288 codec_dai
->capture_active
++;
292 rtd
->codec
->active
++;
293 mutex_unlock(&rtd
->pcm_mutex
);
297 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
298 rtd
->dai_link
->ops
->shutdown(substream
);
301 if (codec_dai
->driver
->ops
->shutdown
)
302 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
305 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
306 platform
->driver
->ops
->close(substream
);
309 if (cpu_dai
->driver
->ops
->shutdown
)
310 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
312 mutex_unlock(&rtd
->pcm_mutex
);
314 pm_runtime_put(platform
->dev
);
315 pm_runtime_put(codec_dai
->dev
);
316 pm_runtime_put(cpu_dai
->dev
);
322 * Power down the audio subsystem pmdown_time msecs after close is called.
323 * This is to ensure there are no pops or clicks in between any music tracks
324 * due to DAPM power cycling.
326 static void close_delayed_work(struct work_struct
*work
)
328 struct snd_soc_pcm_runtime
*rtd
=
329 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
330 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
332 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
334 dev_dbg(rtd
->dev
, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
335 codec_dai
->driver
->playback
.stream_name
,
336 codec_dai
->playback_active
? "active" : "inactive",
337 codec_dai
->pop_wait
? "yes" : "no");
339 /* are we waiting on this codec DAI stream */
340 if (codec_dai
->pop_wait
== 1) {
341 codec_dai
->pop_wait
= 0;
342 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_PLAYBACK
,
343 SND_SOC_DAPM_STREAM_STOP
);
346 mutex_unlock(&rtd
->pcm_mutex
);
350 * Called by ALSA when a PCM substream is closed. Private data can be
351 * freed here. The cpu DAI, codec DAI, machine and platform are also
354 static int soc_pcm_close(struct snd_pcm_substream
*substream
)
356 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
357 struct snd_soc_platform
*platform
= rtd
->platform
;
358 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
359 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
360 struct snd_soc_codec
*codec
= rtd
->codec
;
362 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
364 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
365 cpu_dai
->playback_active
--;
366 codec_dai
->playback_active
--;
368 cpu_dai
->capture_active
--;
369 codec_dai
->capture_active
--;
376 /* clear the corresponding DAIs rate when inactive */
377 if (!cpu_dai
->active
)
380 if (!codec_dai
->active
)
383 /* Muting the DAC suppresses artifacts caused during digital
384 * shutdown, for example from stopping clocks.
386 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
387 snd_soc_dai_digital_mute(codec_dai
, 1);
389 if (cpu_dai
->driver
->ops
->shutdown
)
390 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
392 if (codec_dai
->driver
->ops
->shutdown
)
393 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
395 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
396 rtd
->dai_link
->ops
->shutdown(substream
);
398 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
399 platform
->driver
->ops
->close(substream
);
400 cpu_dai
->runtime
= NULL
;
402 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
403 if (!rtd
->pmdown_time
|| codec
->ignore_pmdown_time
||
404 rtd
->dai_link
->ignore_pmdown_time
) {
405 /* powered down playback stream now */
406 snd_soc_dapm_stream_event(rtd
,
407 SNDRV_PCM_STREAM_PLAYBACK
,
408 SND_SOC_DAPM_STREAM_STOP
);
410 /* start delayed pop wq here for playback streams */
411 codec_dai
->pop_wait
= 1;
412 schedule_delayed_work(&rtd
->delayed_work
,
413 msecs_to_jiffies(rtd
->pmdown_time
));
416 /* capture streams can be powered down now */
417 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_CAPTURE
,
418 SND_SOC_DAPM_STREAM_STOP
);
421 mutex_unlock(&rtd
->pcm_mutex
);
423 pm_runtime_put(platform
->dev
);
424 pm_runtime_put(codec_dai
->dev
);
425 pm_runtime_put(cpu_dai
->dev
);
431 * Called by ALSA when the PCM substream is prepared, can set format, sample
432 * rate, etc. This function is non atomic and can be called multiple times,
433 * it can refer to the runtime info.
435 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
437 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
438 struct snd_soc_platform
*platform
= rtd
->platform
;
439 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
440 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
443 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
445 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
446 ret
= rtd
->dai_link
->ops
->prepare(substream
);
448 dev_err(rtd
->card
->dev
, "ASoC: machine prepare error:"
454 if (platform
->driver
->ops
&& platform
->driver
->ops
->prepare
) {
455 ret
= platform
->driver
->ops
->prepare(substream
);
457 dev_err(platform
->dev
, "ASoC: platform prepare error:"
463 if (codec_dai
->driver
->ops
->prepare
) {
464 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
466 dev_err(codec_dai
->dev
, "ASoC: DAI prepare error: %d\n",
472 if (cpu_dai
->driver
->ops
->prepare
) {
473 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
475 dev_err(cpu_dai
->dev
, "ASoC: DAI prepare error: %d\n",
481 /* cancel any delayed stream shutdown that is pending */
482 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
483 codec_dai
->pop_wait
) {
484 codec_dai
->pop_wait
= 0;
485 cancel_delayed_work(&rtd
->delayed_work
);
488 snd_soc_dapm_stream_event(rtd
, substream
->stream
,
489 SND_SOC_DAPM_STREAM_START
);
491 snd_soc_dai_digital_mute(codec_dai
, 0);
494 mutex_unlock(&rtd
->pcm_mutex
);
499 * Called by ALSA when the hardware params are set by application. This
500 * function can also be called multiple times and can allocate buffers
501 * (using snd_pcm_lib_* ). It's non-atomic.
503 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
504 struct snd_pcm_hw_params
*params
)
506 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
507 struct snd_soc_platform
*platform
= rtd
->platform
;
508 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
509 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
512 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
514 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
515 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
517 dev_err(rtd
->card
->dev
, "ASoC: machine hw_params"
518 " failed: %d\n", ret
);
523 if (codec_dai
->driver
->ops
->hw_params
) {
524 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
526 dev_err(codec_dai
->dev
, "ASoC: can't set %s hw params:"
527 " %d\n", codec_dai
->name
, ret
);
532 if (cpu_dai
->driver
->ops
->hw_params
) {
533 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
535 dev_err(cpu_dai
->dev
, "ASoC: %s hw params failed: %d\n",
541 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_params
) {
542 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
544 dev_err(platform
->dev
, "ASoC: %s hw params failed: %d\n",
545 platform
->name
, ret
);
550 /* store the rate for each DAIs */
551 cpu_dai
->rate
= params_rate(params
);
552 codec_dai
->rate
= params_rate(params
);
555 mutex_unlock(&rtd
->pcm_mutex
);
559 if (cpu_dai
->driver
->ops
->hw_free
)
560 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
563 if (codec_dai
->driver
->ops
->hw_free
)
564 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
567 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
568 rtd
->dai_link
->ops
->hw_free(substream
);
570 mutex_unlock(&rtd
->pcm_mutex
);
575 * Frees resources allocated by hw_params, can be called multiple times
577 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
579 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
580 struct snd_soc_platform
*platform
= rtd
->platform
;
581 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
582 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
583 struct snd_soc_codec
*codec
= rtd
->codec
;
585 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
587 /* apply codec digital mute */
589 snd_soc_dai_digital_mute(codec_dai
, 1);
591 /* free any machine hw params */
592 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
593 rtd
->dai_link
->ops
->hw_free(substream
);
595 /* free any DMA resources */
596 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_free
)
597 platform
->driver
->ops
->hw_free(substream
);
599 /* now free hw params for the DAIs */
600 if (codec_dai
->driver
->ops
->hw_free
)
601 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
603 if (cpu_dai
->driver
->ops
->hw_free
)
604 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
606 mutex_unlock(&rtd
->pcm_mutex
);
610 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
612 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
613 struct snd_soc_platform
*platform
= rtd
->platform
;
614 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
615 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
618 if (codec_dai
->driver
->ops
->trigger
) {
619 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
624 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
) {
625 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
630 if (cpu_dai
->driver
->ops
->trigger
) {
631 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
638 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream
*substream
,
641 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
642 struct snd_soc_platform
*platform
= rtd
->platform
;
643 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
644 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
647 if (codec_dai
->driver
->ops
->bespoke_trigger
) {
648 ret
= codec_dai
->driver
->ops
->bespoke_trigger(substream
, cmd
, codec_dai
);
653 if (platform
->driver
->bespoke_trigger
) {
654 ret
= platform
->driver
->bespoke_trigger(substream
, cmd
);
659 if (cpu_dai
->driver
->ops
->bespoke_trigger
) {
660 ret
= cpu_dai
->driver
->ops
->bespoke_trigger(substream
, cmd
, cpu_dai
);
667 * soc level wrapper for pointer callback
668 * If cpu_dai, codec_dai, platform driver has the delay callback, than
669 * the runtime->delay will be updated accordingly.
671 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
673 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
674 struct snd_soc_platform
*platform
= rtd
->platform
;
675 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
676 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
677 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
678 snd_pcm_uframes_t offset
= 0;
679 snd_pcm_sframes_t delay
= 0;
681 if (platform
->driver
->ops
&& platform
->driver
->ops
->pointer
)
682 offset
= platform
->driver
->ops
->pointer(substream
);
684 if (cpu_dai
->driver
->ops
->delay
)
685 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
687 if (codec_dai
->driver
->ops
->delay
)
688 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
690 if (platform
->driver
->delay
)
691 delay
+= platform
->driver
->delay(substream
, codec_dai
);
693 runtime
->delay
= delay
;
698 /* connect a FE and BE */
699 static int dpcm_be_connect(struct snd_soc_pcm_runtime
*fe
,
700 struct snd_soc_pcm_runtime
*be
, int stream
)
702 struct snd_soc_dpcm
*dpcm
;
704 /* only add new dpcms */
705 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
706 if (dpcm
->be
== be
&& dpcm
->fe
== fe
)
710 dpcm
= kzalloc(sizeof(struct snd_soc_dpcm
), GFP_KERNEL
);
716 be
->dpcm
[stream
].runtime
= fe
->dpcm
[stream
].runtime
;
717 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_NEW
;
718 list_add(&dpcm
->list_be
, &fe
->dpcm
[stream
].be_clients
);
719 list_add(&dpcm
->list_fe
, &be
->dpcm
[stream
].fe_clients
);
721 dev_dbg(fe
->dev
, " connected new DPCM %s path %s %s %s\n",
722 stream
? "capture" : "playback", fe
->dai_link
->name
,
723 stream
? "<-" : "->", be
->dai_link
->name
);
725 #ifdef CONFIG_DEBUG_FS
726 dpcm
->debugfs_state
= debugfs_create_u32(be
->dai_link
->name
, 0644,
727 fe
->debugfs_dpcm_root
, &dpcm
->state
);
732 /* reparent a BE onto another FE */
733 static void dpcm_be_reparent(struct snd_soc_pcm_runtime
*fe
,
734 struct snd_soc_pcm_runtime
*be
, int stream
)
736 struct snd_soc_dpcm
*dpcm
;
737 struct snd_pcm_substream
*fe_substream
, *be_substream
;
739 /* reparent if BE is connected to other FEs */
740 if (!be
->dpcm
[stream
].users
)
743 be_substream
= snd_soc_dpcm_get_substream(be
, stream
);
745 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
749 dev_dbg(fe
->dev
, " reparent %s path %s %s %s\n",
750 stream
? "capture" : "playback",
751 dpcm
->fe
->dai_link
->name
,
752 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
754 fe_substream
= snd_soc_dpcm_get_substream(dpcm
->fe
, stream
);
755 be_substream
->runtime
= fe_substream
->runtime
;
760 /* disconnect a BE and FE */
761 static void dpcm_be_disconnect(struct snd_soc_pcm_runtime
*fe
, int stream
)
763 struct snd_soc_dpcm
*dpcm
, *d
;
765 list_for_each_entry_safe(dpcm
, d
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
766 dev_dbg(fe
->dev
, "ASoC: BE %s disconnect check for %s\n",
767 stream
? "capture" : "playback",
768 dpcm
->be
->dai_link
->name
);
770 if (dpcm
->state
!= SND_SOC_DPCM_LINK_STATE_FREE
)
773 dev_dbg(fe
->dev
, " freed DSP %s path %s %s %s\n",
774 stream
? "capture" : "playback", fe
->dai_link
->name
,
775 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
777 /* BEs still alive need new FE */
778 dpcm_be_reparent(fe
, dpcm
->be
, stream
);
780 #ifdef CONFIG_DEBUG_FS
781 debugfs_remove(dpcm
->debugfs_state
);
783 list_del(&dpcm
->list_be
);
784 list_del(&dpcm
->list_fe
);
789 /* get BE for DAI widget and stream */
790 static struct snd_soc_pcm_runtime
*dpcm_get_be(struct snd_soc_card
*card
,
791 struct snd_soc_dapm_widget
*widget
, int stream
)
793 struct snd_soc_pcm_runtime
*be
;
796 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
797 for (i
= 0; i
< card
->num_links
; i
++) {
800 if (!be
->dai_link
->no_pcm
)
803 if (be
->cpu_dai
->playback_widget
== widget
||
804 be
->codec_dai
->playback_widget
== widget
)
809 for (i
= 0; i
< card
->num_links
; i
++) {
812 if (!be
->dai_link
->no_pcm
)
815 if (be
->cpu_dai
->capture_widget
== widget
||
816 be
->codec_dai
->capture_widget
== widget
)
821 dev_err(card
->dev
, "ASoC: can't get %s BE for %s\n",
822 stream
? "capture" : "playback", widget
->name
);
826 static inline struct snd_soc_dapm_widget
*
827 rtd_get_cpu_widget(struct snd_soc_pcm_runtime
*rtd
, int stream
)
829 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
830 return rtd
->cpu_dai
->playback_widget
;
832 return rtd
->cpu_dai
->capture_widget
;
835 static inline struct snd_soc_dapm_widget
*
836 rtd_get_codec_widget(struct snd_soc_pcm_runtime
*rtd
, int stream
)
838 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
839 return rtd
->codec_dai
->playback_widget
;
841 return rtd
->codec_dai
->capture_widget
;
844 static int widget_in_list(struct snd_soc_dapm_widget_list
*list
,
845 struct snd_soc_dapm_widget
*widget
)
849 for (i
= 0; i
< list
->num_widgets
; i
++) {
850 if (widget
== list
->widgets
[i
])
857 static int dpcm_path_get(struct snd_soc_pcm_runtime
*fe
,
858 int stream
, struct snd_soc_dapm_widget_list
**list_
)
860 struct snd_soc_dai
*cpu_dai
= fe
->cpu_dai
;
861 struct snd_soc_dapm_widget_list
*list
;
864 list
= kzalloc(sizeof(struct snd_soc_dapm_widget_list
) +
865 sizeof(struct snd_soc_dapm_widget
*), GFP_KERNEL
);
869 /* get number of valid DAI paths and their widgets */
870 paths
= snd_soc_dapm_dai_get_connected_widgets(cpu_dai
, stream
, &list
);
872 dev_dbg(fe
->dev
, "ASoC: found %d audio %s paths\n", paths
,
873 stream
? "capture" : "playback");
879 static inline void dpcm_path_put(struct snd_soc_dapm_widget_list
**list
)
884 static int dpcm_prune_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
885 struct snd_soc_dapm_widget_list
**list_
)
887 struct snd_soc_dpcm
*dpcm
;
888 struct snd_soc_dapm_widget_list
*list
= *list_
;
889 struct snd_soc_dapm_widget
*widget
;
892 /* Destroy any old FE <--> BE connections */
893 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
895 /* is there a valid CPU DAI widget for this BE */
896 widget
= rtd_get_cpu_widget(dpcm
->be
, stream
);
898 /* prune the BE if it's no longer in our active list */
899 if (widget
&& widget_in_list(list
, widget
))
902 /* is there a valid CODEC DAI widget for this BE */
903 widget
= rtd_get_codec_widget(dpcm
->be
, stream
);
905 /* prune the BE if it's no longer in our active list */
906 if (widget
&& widget_in_list(list
, widget
))
909 dev_dbg(fe
->dev
, "ASoC: pruning %s BE %s for %s\n",
910 stream
? "capture" : "playback",
911 dpcm
->be
->dai_link
->name
, fe
->dai_link
->name
);
912 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
913 dpcm
->be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
917 dev_dbg(fe
->dev
, "ASoC: found %d old BE paths for pruning\n", prune
);
921 static int dpcm_add_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
922 struct snd_soc_dapm_widget_list
**list_
)
924 struct snd_soc_card
*card
= fe
->card
;
925 struct snd_soc_dapm_widget_list
*list
= *list_
;
926 struct snd_soc_pcm_runtime
*be
;
929 /* Create any new FE <--> BE connections */
930 for (i
= 0; i
< list
->num_widgets
; i
++) {
932 if (list
->widgets
[i
]->id
!= snd_soc_dapm_dai
)
935 /* is there a valid BE rtd for this widget */
936 be
= dpcm_get_be(card
, list
->widgets
[i
], stream
);
938 dev_err(fe
->dev
, "ASoC: no BE found for %s\n",
939 list
->widgets
[i
]->name
);
943 /* make sure BE is a real BE */
944 if (!be
->dai_link
->no_pcm
)
947 /* don't connect if FE is not running */
948 if (!fe
->dpcm
[stream
].runtime
)
951 /* newly connected FE and BE */
952 err
= dpcm_be_connect(fe
, be
, stream
);
954 dev_err(fe
->dev
, "ASoC: can't connect %s\n",
955 list
->widgets
[i
]->name
);
957 } else if (err
== 0) /* already connected */
961 be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
965 dev_dbg(fe
->dev
, "ASoC: found %d new BE paths\n", new);
970 * Find the corresponding BE DAIs that source or sink audio to this
973 static int dpcm_process_paths(struct snd_soc_pcm_runtime
*fe
,
974 int stream
, struct snd_soc_dapm_widget_list
**list
, int new)
977 return dpcm_add_paths(fe
, stream
, list
);
979 return dpcm_prune_paths(fe
, stream
, list
);
982 static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime
*fe
, int stream
)
984 struct snd_soc_dpcm
*dpcm
;
986 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
987 dpcm
->be
->dpcm
[stream
].runtime_update
=
988 SND_SOC_DPCM_UPDATE_NO
;
991 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime
*fe
,
994 struct snd_soc_dpcm
*dpcm
;
996 /* disable any enabled and non active backends */
997 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
999 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1000 struct snd_pcm_substream
*be_substream
=
1001 snd_soc_dpcm_get_substream(be
, stream
);
1003 if (be
->dpcm
[stream
].users
== 0)
1004 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1005 stream
? "capture" : "playback",
1006 be
->dpcm
[stream
].state
);
1008 if (--be
->dpcm
[stream
].users
!= 0)
1011 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1014 soc_pcm_close(be_substream
);
1015 be_substream
->runtime
= NULL
;
1016 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1020 static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
1022 struct snd_soc_dpcm
*dpcm
;
1025 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1026 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1028 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1029 struct snd_pcm_substream
*be_substream
=
1030 snd_soc_dpcm_get_substream(be
, stream
);
1032 /* is this op for this BE ? */
1033 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1036 /* first time the dpcm is open ? */
1037 if (be
->dpcm
[stream
].users
== DPCM_MAX_BE_USERS
)
1038 dev_err(be
->dev
, "ASoC: too many users %s at open %d\n",
1039 stream
? "capture" : "playback",
1040 be
->dpcm
[stream
].state
);
1042 if (be
->dpcm
[stream
].users
++ != 0)
1045 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_NEW
) &&
1046 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_CLOSE
))
1049 dev_dbg(be
->dev
, "ASoC: open BE %s\n", be
->dai_link
->name
);
1051 be_substream
->runtime
= be
->dpcm
[stream
].runtime
;
1052 err
= soc_pcm_open(be_substream
);
1054 dev_err(be
->dev
, "ASoC: BE open failed %d\n", err
);
1055 be
->dpcm
[stream
].users
--;
1056 if (be
->dpcm
[stream
].users
< 0)
1057 dev_err(be
->dev
, "ASoC: no users %s at unwind %d\n",
1058 stream
? "capture" : "playback",
1059 be
->dpcm
[stream
].state
);
1061 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1065 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1072 /* disable any enabled and non active backends */
1073 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1074 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1075 struct snd_pcm_substream
*be_substream
=
1076 snd_soc_dpcm_get_substream(be
, stream
);
1078 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1081 if (be
->dpcm
[stream
].users
== 0)
1082 dev_err(be
->dev
, "ASoC: no users %s at close %d\n",
1083 stream
? "capture" : "playback",
1084 be
->dpcm
[stream
].state
);
1086 if (--be
->dpcm
[stream
].users
!= 0)
1089 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1092 soc_pcm_close(be_substream
);
1093 be_substream
->runtime
= NULL
;
1094 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1100 static void dpcm_set_fe_runtime(struct snd_pcm_substream
*substream
)
1102 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1103 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1104 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1105 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
1107 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1108 runtime
->hw
.rate_min
= cpu_dai_drv
->playback
.rate_min
;
1109 runtime
->hw
.rate_max
= cpu_dai_drv
->playback
.rate_max
;
1110 runtime
->hw
.channels_min
= cpu_dai_drv
->playback
.channels_min
;
1111 runtime
->hw
.channels_max
= cpu_dai_drv
->playback
.channels_max
;
1112 runtime
->hw
.formats
&= cpu_dai_drv
->playback
.formats
;
1113 runtime
->hw
.rates
= cpu_dai_drv
->playback
.rates
;
1115 runtime
->hw
.rate_min
= cpu_dai_drv
->capture
.rate_min
;
1116 runtime
->hw
.rate_max
= cpu_dai_drv
->capture
.rate_max
;
1117 runtime
->hw
.channels_min
= cpu_dai_drv
->capture
.channels_min
;
1118 runtime
->hw
.channels_max
= cpu_dai_drv
->capture
.channels_max
;
1119 runtime
->hw
.formats
&= cpu_dai_drv
->capture
.formats
;
1120 runtime
->hw
.rates
= cpu_dai_drv
->capture
.rates
;
1124 static int dpcm_fe_dai_startup(struct snd_pcm_substream
*fe_substream
)
1126 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1127 struct snd_pcm_runtime
*runtime
= fe_substream
->runtime
;
1128 int stream
= fe_substream
->stream
, ret
= 0;
1130 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1132 ret
= dpcm_be_dai_startup(fe
, fe_substream
->stream
);
1134 dev_err(fe
->dev
,"ASoC: failed to start some BEs %d\n", ret
);
1138 dev_dbg(fe
->dev
, "ASoC: open FE %s\n", fe
->dai_link
->name
);
1140 /* start the DAI frontend */
1141 ret
= soc_pcm_open(fe_substream
);
1143 dev_err(fe
->dev
,"ASoC: failed to start FE %d\n", ret
);
1147 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1149 dpcm_set_fe_runtime(fe_substream
);
1150 snd_pcm_limit_hw_rates(runtime
);
1152 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1156 dpcm_be_dai_startup_unwind(fe
, fe_substream
->stream
);
1158 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1162 static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
1164 struct snd_soc_dpcm
*dpcm
;
1166 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1167 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1169 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1170 struct snd_pcm_substream
*be_substream
=
1171 snd_soc_dpcm_get_substream(be
, stream
);
1173 /* is this op for this BE ? */
1174 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1177 if (be
->dpcm
[stream
].users
== 0)
1178 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1179 stream
? "capture" : "playback",
1180 be
->dpcm
[stream
].state
);
1182 if (--be
->dpcm
[stream
].users
!= 0)
1185 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1186 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
))
1189 dev_dbg(be
->dev
, "ASoC: close BE %s\n",
1190 dpcm
->fe
->dai_link
->name
);
1192 soc_pcm_close(be_substream
);
1193 be_substream
->runtime
= NULL
;
1195 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1200 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream
*substream
)
1202 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1203 int stream
= substream
->stream
;
1205 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1207 /* shutdown the BEs */
1208 dpcm_be_dai_shutdown(fe
, substream
->stream
);
1210 dev_dbg(fe
->dev
, "ASoC: close FE %s\n", fe
->dai_link
->name
);
1212 /* now shutdown the frontend */
1213 soc_pcm_close(substream
);
1215 /* run the stream event for each BE */
1216 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_STOP
);
1218 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1219 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1223 static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime
*fe
, int stream
)
1225 struct snd_soc_dpcm
*dpcm
;
1227 /* only hw_params backends that are either sinks or sources
1228 * to this frontend DAI */
1229 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1231 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1232 struct snd_pcm_substream
*be_substream
=
1233 snd_soc_dpcm_get_substream(be
, stream
);
1235 /* is this op for this BE ? */
1236 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1239 /* only free hw when no longer used - check all FEs */
1240 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1243 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1244 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
1245 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1246 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1249 dev_dbg(be
->dev
, "ASoC: hw_free BE %s\n",
1250 dpcm
->fe
->dai_link
->name
);
1252 soc_pcm_hw_free(be_substream
);
1254 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1260 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream
*substream
)
1262 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1263 int err
, stream
= substream
->stream
;
1265 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1266 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1268 dev_dbg(fe
->dev
, "ASoC: hw_free FE %s\n", fe
->dai_link
->name
);
1270 /* call hw_free on the frontend */
1271 err
= soc_pcm_hw_free(substream
);
1273 dev_err(fe
->dev
,"ASoC: hw_free FE %s failed\n",
1274 fe
->dai_link
->name
);
1276 /* only hw_params backends that are either sinks or sources
1277 * to this frontend DAI */
1278 err
= dpcm_be_dai_hw_free(fe
, stream
);
1280 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1281 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1283 mutex_unlock(&fe
->card
->mutex
);
1287 static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime
*fe
, int stream
)
1289 struct snd_soc_dpcm
*dpcm
;
1292 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1294 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1295 struct snd_pcm_substream
*be_substream
=
1296 snd_soc_dpcm_get_substream(be
, stream
);
1298 /* is this op for this BE ? */
1299 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1302 /* only allow hw_params() if no connected FEs are running */
1303 if (!snd_soc_dpcm_can_be_params(fe
, be
, stream
))
1306 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1307 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1308 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
))
1311 dev_dbg(be
->dev
, "ASoC: hw_params BE %s\n",
1312 dpcm
->fe
->dai_link
->name
);
1314 /* copy params for each dpcm */
1315 memcpy(&dpcm
->hw_params
, &fe
->dpcm
[stream
].hw_params
,
1316 sizeof(struct snd_pcm_hw_params
));
1318 /* perform any hw_params fixups */
1319 if (be
->dai_link
->be_hw_params_fixup
) {
1320 ret
= be
->dai_link
->be_hw_params_fixup(be
,
1324 "ASoC: hw_params BE fixup failed %d\n",
1330 ret
= soc_pcm_hw_params(be_substream
, &dpcm
->hw_params
);
1332 dev_err(dpcm
->be
->dev
,
1333 "ASoC: hw_params BE failed %d\n", ret
);
1337 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1342 /* disable any enabled and non active backends */
1343 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1344 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1345 struct snd_pcm_substream
*be_substream
=
1346 snd_soc_dpcm_get_substream(be
, stream
);
1348 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1351 /* only allow hw_free() if no connected FEs are running */
1352 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1355 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1356 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1357 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1358 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1361 soc_pcm_hw_free(be_substream
);
1367 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream
*substream
,
1368 struct snd_pcm_hw_params
*params
)
1370 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1371 int ret
, stream
= substream
->stream
;
1373 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1374 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1376 memcpy(&fe
->dpcm
[substream
->stream
].hw_params
, params
,
1377 sizeof(struct snd_pcm_hw_params
));
1378 ret
= dpcm_be_dai_hw_params(fe
, substream
->stream
);
1380 dev_err(fe
->dev
,"ASoC: hw_params BE failed %d\n", ret
);
1384 dev_dbg(fe
->dev
, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
1385 fe
->dai_link
->name
, params_rate(params
),
1386 params_channels(params
), params_format(params
));
1388 /* call hw_params on the frontend */
1389 ret
= soc_pcm_hw_params(substream
, params
);
1391 dev_err(fe
->dev
,"ASoC: hw_params FE failed %d\n", ret
);
1392 dpcm_be_dai_hw_free(fe
, stream
);
1394 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1397 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1398 mutex_unlock(&fe
->card
->mutex
);
1402 static int dpcm_do_trigger(struct snd_soc_dpcm
*dpcm
,
1403 struct snd_pcm_substream
*substream
, int cmd
)
1407 dev_dbg(dpcm
->be
->dev
, "ASoC: trigger BE %s cmd %d\n",
1408 dpcm
->fe
->dai_link
->name
, cmd
);
1410 ret
= soc_pcm_trigger(substream
, cmd
);
1412 dev_err(dpcm
->be
->dev
,"ASoC: trigger BE failed %d\n", ret
);
1417 static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime
*fe
, int stream
,
1420 struct snd_soc_dpcm
*dpcm
;
1423 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1425 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1426 struct snd_pcm_substream
*be_substream
=
1427 snd_soc_dpcm_get_substream(be
, stream
);
1429 /* is this op for this BE ? */
1430 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1434 case SNDRV_PCM_TRIGGER_START
:
1435 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
1436 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1439 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1443 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1445 case SNDRV_PCM_TRIGGER_RESUME
:
1446 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_SUSPEND
))
1449 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1453 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1455 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
1456 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PAUSED
))
1459 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1463 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1465 case SNDRV_PCM_TRIGGER_STOP
:
1466 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1469 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1472 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1476 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
1478 case SNDRV_PCM_TRIGGER_SUSPEND
:
1479 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
)
1482 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1485 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1489 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_SUSPEND
;
1491 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
1492 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1495 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1498 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1502 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PAUSED
;
1509 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger
);
1511 static int dpcm_fe_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
)
1513 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1514 int stream
= substream
->stream
, ret
;
1515 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
1517 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1520 case SND_SOC_DPCM_TRIGGER_PRE
:
1521 /* call trigger on the frontend before the backend. */
1523 dev_dbg(fe
->dev
, "ASoC: pre trigger FE %s cmd %d\n",
1524 fe
->dai_link
->name
, cmd
);
1526 ret
= soc_pcm_trigger(substream
, cmd
);
1528 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1532 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
1534 case SND_SOC_DPCM_TRIGGER_POST
:
1535 /* call trigger on the frontend after the backend. */
1537 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
1539 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1543 dev_dbg(fe
->dev
, "ASoC: post trigger FE %s cmd %d\n",
1544 fe
->dai_link
->name
, cmd
);
1546 ret
= soc_pcm_trigger(substream
, cmd
);
1548 case SND_SOC_DPCM_TRIGGER_BESPOKE
:
1549 /* bespoke trigger() - handles both FE and BEs */
1551 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd %d\n",
1552 fe
->dai_link
->name
, cmd
);
1554 ret
= soc_pcm_bespoke_trigger(substream
, cmd
);
1556 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1561 dev_err(fe
->dev
, "ASoC: invalid trigger cmd %d for %s\n", cmd
,
1562 fe
->dai_link
->name
);
1568 case SNDRV_PCM_TRIGGER_START
:
1569 case SNDRV_PCM_TRIGGER_RESUME
:
1570 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
1571 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1573 case SNDRV_PCM_TRIGGER_STOP
:
1574 case SNDRV_PCM_TRIGGER_SUSPEND
:
1575 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
1576 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
1581 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1585 static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime
*fe
, int stream
)
1587 struct snd_soc_dpcm
*dpcm
;
1590 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1592 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1593 struct snd_pcm_substream
*be_substream
=
1594 snd_soc_dpcm_get_substream(be
, stream
);
1596 /* is this op for this BE ? */
1597 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1600 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1601 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1604 dev_dbg(be
->dev
, "ASoC: prepare BE %s\n",
1605 dpcm
->fe
->dai_link
->name
);
1607 ret
= soc_pcm_prepare(be_substream
);
1609 dev_err(be
->dev
, "ASoC: backend prepare failed %d\n",
1614 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
1619 static int dpcm_fe_dai_prepare(struct snd_pcm_substream
*substream
)
1621 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1622 int stream
= substream
->stream
, ret
= 0;
1624 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1626 dev_dbg(fe
->dev
, "ASoC: prepare FE %s\n", fe
->dai_link
->name
);
1628 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1630 /* there is no point preparing this FE if there are no BEs */
1631 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
1632 dev_err(fe
->dev
, "ASoC: no backend DAIs enabled for %s\n",
1633 fe
->dai_link
->name
);
1638 ret
= dpcm_be_dai_prepare(fe
, substream
->stream
);
1642 /* call prepare on the frontend */
1643 ret
= soc_pcm_prepare(substream
);
1645 dev_err(fe
->dev
,"ASoC: prepare FE %s failed\n",
1646 fe
->dai_link
->name
);
1650 /* run the stream event for each BE */
1651 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_START
);
1652 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
1655 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1656 mutex_unlock(&fe
->card
->mutex
);
1661 static int soc_pcm_ioctl(struct snd_pcm_substream
*substream
,
1662 unsigned int cmd
, void *arg
)
1664 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1665 struct snd_soc_platform
*platform
= rtd
->platform
;
1667 if (platform
->driver
->ops
->ioctl
)
1668 return platform
->driver
->ops
->ioctl(substream
, cmd
, arg
);
1669 return snd_pcm_lib_ioctl(substream
, cmd
, arg
);
1672 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
1674 struct snd_pcm_substream
*substream
=
1675 snd_soc_dpcm_get_substream(fe
, stream
);
1676 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
1679 dev_dbg(fe
->dev
, "ASoC: runtime %s close on FE %s\n",
1680 stream
? "capture" : "playback", fe
->dai_link
->name
);
1682 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
1683 /* call bespoke trigger - FE takes care of all BE triggers */
1684 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd stop\n",
1685 fe
->dai_link
->name
);
1687 err
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_STOP
);
1689 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
1691 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd stop\n",
1692 fe
->dai_link
->name
);
1694 err
= dpcm_be_dai_trigger(fe
, stream
, SNDRV_PCM_TRIGGER_STOP
);
1696 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
1699 err
= dpcm_be_dai_hw_free(fe
, stream
);
1701 dev_err(fe
->dev
,"ASoC: hw_free FE failed %d\n", err
);
1703 err
= dpcm_be_dai_shutdown(fe
, stream
);
1705 dev_err(fe
->dev
,"ASoC: shutdown FE failed %d\n", err
);
1707 /* run the stream event for each BE */
1708 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
1713 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
1715 struct snd_pcm_substream
*substream
=
1716 snd_soc_dpcm_get_substream(fe
, stream
);
1717 struct snd_soc_dpcm
*dpcm
;
1718 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
1721 dev_dbg(fe
->dev
, "ASoC: runtime %s open on FE %s\n",
1722 stream
? "capture" : "playback", fe
->dai_link
->name
);
1724 /* Only start the BE if the FE is ready */
1725 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_FREE
||
1726 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_CLOSE
)
1729 /* startup must always be called for new BEs */
1730 ret
= dpcm_be_dai_startup(fe
, stream
);
1736 /* keep going if FE state is > open */
1737 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_OPEN
)
1740 ret
= dpcm_be_dai_hw_params(fe
, stream
);
1746 /* keep going if FE state is > hw_params */
1747 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_PARAMS
)
1751 ret
= dpcm_be_dai_prepare(fe
, stream
);
1757 /* run the stream event for each BE */
1758 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
1760 /* keep going if FE state is > prepare */
1761 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_PREPARE
||
1762 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_STOP
)
1765 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
1766 /* call trigger on the frontend - FE takes care of all BE triggers */
1767 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd start\n",
1768 fe
->dai_link
->name
);
1770 ret
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_START
);
1772 dev_err(fe
->dev
,"ASoC: bespoke trigger FE failed %d\n", ret
);
1776 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd start\n",
1777 fe
->dai_link
->name
);
1779 ret
= dpcm_be_dai_trigger(fe
, stream
,
1780 SNDRV_PCM_TRIGGER_START
);
1782 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1790 dpcm_be_dai_hw_free(fe
, stream
);
1792 dpcm_be_dai_shutdown(fe
, stream
);
1794 /* disconnect any non started BEs */
1795 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1796 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1797 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1798 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
1804 static int dpcm_run_new_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
1808 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1809 ret
= dpcm_run_update_startup(fe
, stream
);
1811 dev_err(fe
->dev
, "ASoC: failed to startup some BEs\n");
1812 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1817 static int dpcm_run_old_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
1821 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1822 ret
= dpcm_run_update_shutdown(fe
, stream
);
1824 dev_err(fe
->dev
, "ASoC: failed to shutdown some BEs\n");
1825 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
1830 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
1833 int soc_dpcm_runtime_update(struct snd_soc_dapm_widget
*widget
)
1835 struct snd_soc_card
*card
;
1836 int i
, old
, new, paths
;
1839 card
= widget
->codec
->card
;
1840 else if (widget
->platform
)
1841 card
= widget
->platform
->card
;
1845 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1846 for (i
= 0; i
< card
->num_rtd
; i
++) {
1847 struct snd_soc_dapm_widget_list
*list
;
1848 struct snd_soc_pcm_runtime
*fe
= &card
->rtd
[i
];
1850 /* make sure link is FE */
1851 if (!fe
->dai_link
->dynamic
)
1854 /* only check active links */
1855 if (!fe
->cpu_dai
->active
)
1858 /* DAPM sync will call this to update DSP paths */
1859 dev_dbg(fe
->dev
, "ASoC: DPCM runtime update for FE %s\n",
1860 fe
->dai_link
->name
);
1862 /* skip if FE doesn't have playback capability */
1863 if (!fe
->cpu_dai
->driver
->playback
.channels_min
)
1866 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
);
1868 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
1869 fe
->dai_link
->name
, "playback");
1870 mutex_unlock(&card
->mutex
);
1874 /* update any new playback paths */
1875 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 1);
1877 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1878 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1879 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1882 /* update any old playback paths */
1883 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 0);
1885 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1886 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1887 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
1891 /* skip if FE doesn't have capture capability */
1892 if (!fe
->cpu_dai
->driver
->capture
.channels_min
)
1895 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
);
1897 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
1898 fe
->dai_link
->name
, "capture");
1899 mutex_unlock(&card
->mutex
);
1903 /* update any new capture paths */
1904 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 1);
1906 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1907 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1908 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1911 /* update any old capture paths */
1912 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 0);
1914 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1915 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1916 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
1919 dpcm_path_put(&list
);
1922 mutex_unlock(&card
->mutex
);
1925 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime
*fe
, int mute
)
1927 struct snd_soc_dpcm
*dpcm
;
1928 struct list_head
*clients
=
1929 &fe
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
;
1931 list_for_each_entry(dpcm
, clients
, list_be
) {
1933 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1934 struct snd_soc_dai
*dai
= be
->codec_dai
;
1935 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1937 if (be
->dai_link
->ignore_suspend
)
1940 dev_dbg(be
->dev
, "ASoC: BE digital mute %s\n", be
->dai_link
->name
);
1942 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1943 drv
->ops
->digital_mute(dai
, mute
);
1949 static int dpcm_fe_dai_open(struct snd_pcm_substream
*fe_substream
)
1951 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1952 struct snd_soc_dpcm
*dpcm
;
1953 struct snd_soc_dapm_widget_list
*list
;
1955 int stream
= fe_substream
->stream
;
1957 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1958 fe
->dpcm
[stream
].runtime
= fe_substream
->runtime
;
1960 if (dpcm_path_get(fe
, stream
, &list
) <= 0) {
1961 dev_dbg(fe
->dev
, "ASoC: %s no valid %s route\n",
1962 fe
->dai_link
->name
, stream
? "capture" : "playback");
1965 /* calculate valid and active FE <-> BE dpcms */
1966 dpcm_process_paths(fe
, stream
, &list
, 1);
1968 ret
= dpcm_fe_dai_startup(fe_substream
);
1970 /* clean up all links */
1971 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
1972 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
1974 dpcm_be_disconnect(fe
, stream
);
1975 fe
->dpcm
[stream
].runtime
= NULL
;
1978 dpcm_clear_pending_state(fe
, stream
);
1979 dpcm_path_put(&list
);
1980 mutex_unlock(&fe
->card
->mutex
);
1984 static int dpcm_fe_dai_close(struct snd_pcm_substream
*fe_substream
)
1986 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1987 struct snd_soc_dpcm
*dpcm
;
1988 int stream
= fe_substream
->stream
, ret
;
1990 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1991 ret
= dpcm_fe_dai_shutdown(fe_substream
);
1993 /* mark FE's links ready to prune */
1994 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
1995 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
1997 dpcm_be_disconnect(fe
, stream
);
1999 fe
->dpcm
[stream
].runtime
= NULL
;
2000 mutex_unlock(&fe
->card
->mutex
);
2004 /* create a new pcm */
2005 int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2007 struct snd_soc_platform
*platform
= rtd
->platform
;
2008 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
2009 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2010 struct snd_pcm
*pcm
;
2012 int ret
= 0, playback
= 0, capture
= 0;
2014 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
) {
2015 if (cpu_dai
->driver
->playback
.channels_min
)
2017 if (cpu_dai
->driver
->capture
.channels_min
)
2020 if (codec_dai
->driver
->playback
.channels_min
)
2022 if (codec_dai
->driver
->capture
.channels_min
)
2026 /* create the PCM */
2027 if (rtd
->dai_link
->no_pcm
) {
2028 snprintf(new_name
, sizeof(new_name
), "(%s)",
2029 rtd
->dai_link
->stream_name
);
2031 ret
= snd_pcm_new_internal(rtd
->card
->snd_card
, new_name
, num
,
2032 playback
, capture
, &pcm
);
2034 if (rtd
->dai_link
->dynamic
)
2035 snprintf(new_name
, sizeof(new_name
), "%s (*)",
2036 rtd
->dai_link
->stream_name
);
2038 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2039 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
2041 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
, num
, playback
,
2045 dev_err(rtd
->card
->dev
, "ASoC: can't create pcm for %s\n",
2046 rtd
->dai_link
->name
);
2049 dev_dbg(rtd
->card
->dev
, "ASoC: registered pcm #%d %s\n",num
, new_name
);
2051 /* DAPM dai link stream work */
2052 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
2055 pcm
->private_data
= rtd
;
2057 if (rtd
->dai_link
->no_pcm
) {
2059 pcm
->streams
[SNDRV_PCM_STREAM_PLAYBACK
].substream
->private_data
= rtd
;
2061 pcm
->streams
[SNDRV_PCM_STREAM_CAPTURE
].substream
->private_data
= rtd
;
2065 /* ASoC PCM operations */
2066 if (rtd
->dai_link
->dynamic
) {
2067 rtd
->ops
.open
= dpcm_fe_dai_open
;
2068 rtd
->ops
.hw_params
= dpcm_fe_dai_hw_params
;
2069 rtd
->ops
.prepare
= dpcm_fe_dai_prepare
;
2070 rtd
->ops
.trigger
= dpcm_fe_dai_trigger
;
2071 rtd
->ops
.hw_free
= dpcm_fe_dai_hw_free
;
2072 rtd
->ops
.close
= dpcm_fe_dai_close
;
2073 rtd
->ops
.pointer
= soc_pcm_pointer
;
2074 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2076 rtd
->ops
.open
= soc_pcm_open
;
2077 rtd
->ops
.hw_params
= soc_pcm_hw_params
;
2078 rtd
->ops
.prepare
= soc_pcm_prepare
;
2079 rtd
->ops
.trigger
= soc_pcm_trigger
;
2080 rtd
->ops
.hw_free
= soc_pcm_hw_free
;
2081 rtd
->ops
.close
= soc_pcm_close
;
2082 rtd
->ops
.pointer
= soc_pcm_pointer
;
2083 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2086 if (platform
->driver
->ops
) {
2087 rtd
->ops
.ack
= platform
->driver
->ops
->ack
;
2088 rtd
->ops
.copy
= platform
->driver
->ops
->copy
;
2089 rtd
->ops
.silence
= platform
->driver
->ops
->silence
;
2090 rtd
->ops
.page
= platform
->driver
->ops
->page
;
2091 rtd
->ops
.mmap
= platform
->driver
->ops
->mmap
;
2095 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &rtd
->ops
);
2098 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &rtd
->ops
);
2100 if (platform
->driver
->pcm_new
) {
2101 ret
= platform
->driver
->pcm_new(rtd
);
2103 dev_err(platform
->dev
,
2104 "ASoC: pcm constructor failed: %d\n",
2110 pcm
->private_free
= platform
->driver
->pcm_free
;
2112 dev_info(rtd
->card
->dev
, " %s <-> %s mapping ok\n", codec_dai
->name
,
2117 /* is the current PCM operation for this FE ? */
2118 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2120 if (fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
)
2124 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update
);
2126 /* is the current PCM operation for this BE ? */
2127 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime
*fe
,
2128 struct snd_soc_pcm_runtime
*be
, int stream
)
2130 if ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
) ||
2131 ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_BE
) &&
2132 be
->dpcm
[stream
].runtime_update
))
2136 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update
);
2138 /* get the substream for this BE */
2139 struct snd_pcm_substream
*
2140 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime
*be
, int stream
)
2142 return be
->pcm
->streams
[stream
].substream
;
2144 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream
);
2146 /* get the BE runtime state */
2147 enum snd_soc_dpcm_state
2148 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime
*be
, int stream
)
2150 return be
->dpcm
[stream
].state
;
2152 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state
);
2154 /* set the BE runtime state */
2155 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime
*be
,
2156 int stream
, enum snd_soc_dpcm_state state
)
2158 be
->dpcm
[stream
].state
= state
;
2160 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state
);
2163 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
2164 * are not running, paused or suspended for the specified stream direction.
2166 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime
*fe
,
2167 struct snd_soc_pcm_runtime
*be
, int stream
)
2169 struct snd_soc_dpcm
*dpcm
;
2172 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2177 state
= dpcm
->fe
->dpcm
[stream
].state
;
2178 if (state
== SND_SOC_DPCM_STATE_START
||
2179 state
== SND_SOC_DPCM_STATE_PAUSED
||
2180 state
== SND_SOC_DPCM_STATE_SUSPEND
)
2184 /* it's safe to free/stop this BE DAI */
2187 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop
);
2190 * We can only change hw params a BE DAI if any of it's FE are not prepared,
2191 * running, paused or suspended for the specified stream direction.
2193 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime
*fe
,
2194 struct snd_soc_pcm_runtime
*be
, int stream
)
2196 struct snd_soc_dpcm
*dpcm
;
2199 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2204 state
= dpcm
->fe
->dpcm
[stream
].state
;
2205 if (state
== SND_SOC_DPCM_STATE_START
||
2206 state
== SND_SOC_DPCM_STATE_PAUSED
||
2207 state
== SND_SOC_DPCM_STATE_SUSPEND
||
2208 state
== SND_SOC_DPCM_STATE_PREPARE
)
2212 /* it's safe to change hw_params */
2215 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params
);
2217 int snd_soc_platform_trigger(struct snd_pcm_substream
*substream
,
2218 int cmd
, struct snd_soc_platform
*platform
)
2220 if (platform
->driver
->ops
->trigger
)
2221 return platform
->driver
->ops
->trigger(substream
, cmd
);
2224 EXPORT_SYMBOL_GPL(snd_soc_platform_trigger
);
2226 #ifdef CONFIG_DEBUG_FS
2227 static char *dpcm_state_string(enum snd_soc_dpcm_state state
)
2230 case SND_SOC_DPCM_STATE_NEW
:
2232 case SND_SOC_DPCM_STATE_OPEN
:
2234 case SND_SOC_DPCM_STATE_HW_PARAMS
:
2236 case SND_SOC_DPCM_STATE_PREPARE
:
2238 case SND_SOC_DPCM_STATE_START
:
2240 case SND_SOC_DPCM_STATE_STOP
:
2242 case SND_SOC_DPCM_STATE_SUSPEND
:
2244 case SND_SOC_DPCM_STATE_PAUSED
:
2246 case SND_SOC_DPCM_STATE_HW_FREE
:
2248 case SND_SOC_DPCM_STATE_CLOSE
:
2255 static ssize_t
dpcm_show_state(struct snd_soc_pcm_runtime
*fe
,
2256 int stream
, char *buf
, size_t size
)
2258 struct snd_pcm_hw_params
*params
= &fe
->dpcm
[stream
].hw_params
;
2259 struct snd_soc_dpcm
*dpcm
;
2263 offset
+= snprintf(buf
+ offset
, size
- offset
,
2264 "[%s - %s]\n", fe
->dai_link
->name
,
2265 stream
? "Capture" : "Playback");
2267 offset
+= snprintf(buf
+ offset
, size
- offset
, "State: %s\n",
2268 dpcm_state_string(fe
->dpcm
[stream
].state
));
2270 if ((fe
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2271 (fe
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2272 offset
+= snprintf(buf
+ offset
, size
- offset
,
2274 "Format = %s, Channels = %d, Rate = %d\n",
2275 snd_pcm_format_name(params_format(params
)),
2276 params_channels(params
),
2277 params_rate(params
));
2280 offset
+= snprintf(buf
+ offset
, size
- offset
, "Backends:\n");
2282 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
2283 offset
+= snprintf(buf
+ offset
, size
- offset
,
2284 " No active DSP links\n");
2288 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2289 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2290 params
= &dpcm
->hw_params
;
2292 offset
+= snprintf(buf
+ offset
, size
- offset
,
2293 "- %s\n", be
->dai_link
->name
);
2295 offset
+= snprintf(buf
+ offset
, size
- offset
,
2297 dpcm_state_string(be
->dpcm
[stream
].state
));
2299 if ((be
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2300 (be
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2301 offset
+= snprintf(buf
+ offset
, size
- offset
,
2302 " Hardware Params: "
2303 "Format = %s, Channels = %d, Rate = %d\n",
2304 snd_pcm_format_name(params_format(params
)),
2305 params_channels(params
),
2306 params_rate(params
));
2313 static ssize_t
dpcm_state_read_file(struct file
*file
, char __user
*user_buf
,
2314 size_t count
, loff_t
*ppos
)
2316 struct snd_soc_pcm_runtime
*fe
= file
->private_data
;
2317 ssize_t out_count
= PAGE_SIZE
, offset
= 0, ret
= 0;
2320 buf
= kmalloc(out_count
, GFP_KERNEL
);
2324 if (fe
->cpu_dai
->driver
->playback
.channels_min
)
2325 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
,
2326 buf
+ offset
, out_count
- offset
);
2328 if (fe
->cpu_dai
->driver
->capture
.channels_min
)
2329 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_CAPTURE
,
2330 buf
+ offset
, out_count
- offset
);
2332 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, offset
);
2338 static const struct file_operations dpcm_state_fops
= {
2339 .open
= simple_open
,
2340 .read
= dpcm_state_read_file
,
2341 .llseek
= default_llseek
,
2344 int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime
*rtd
)
2349 rtd
->debugfs_dpcm_root
= debugfs_create_dir(rtd
->dai_link
->name
,
2350 rtd
->card
->debugfs_card_root
);
2351 if (!rtd
->debugfs_dpcm_root
) {
2353 "ASoC: Failed to create dpcm debugfs directory %s\n",
2354 rtd
->dai_link
->name
);
2358 rtd
->debugfs_dpcm_state
= debugfs_create_file("state", 0444,
2359 rtd
->debugfs_dpcm_root
,
2360 rtd
, &dpcm_state_fops
);