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/pinctrl/consumer.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/slab.h>
25 #include <linux/workqueue.h>
26 #include <linux/export.h>
27 #include <linux/debugfs.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/pcm_params.h>
31 #include <sound/soc.h>
32 #include <sound/soc-dpcm.h>
33 #include <sound/initval.h>
35 #define DPCM_MAX_BE_USERS 8
38 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
39 * @rtd: ASoC PCM runtime that is activated
40 * @stream: Direction of the PCM stream
42 * Increments the active count for all the DAIs and components attached to a PCM
43 * runtime. Should typically be called when a stream is opened.
45 * Must be called with the rtd->pcm_mutex being held
47 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime
*rtd
, int stream
)
49 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
52 lockdep_assert_held(&rtd
->pcm_mutex
);
54 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
55 cpu_dai
->playback_active
++;
56 for (i
= 0; i
< rtd
->num_codecs
; i
++)
57 rtd
->codec_dais
[i
]->playback_active
++;
59 cpu_dai
->capture_active
++;
60 for (i
= 0; i
< rtd
->num_codecs
; i
++)
61 rtd
->codec_dais
[i
]->capture_active
++;
65 cpu_dai
->component
->active
++;
66 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
67 rtd
->codec_dais
[i
]->active
++;
68 rtd
->codec_dais
[i
]->component
->active
++;
73 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
74 * @rtd: ASoC PCM runtime that is deactivated
75 * @stream: Direction of the PCM stream
77 * Decrements the active count for all the DAIs and components attached to a PCM
78 * runtime. Should typically be called when a stream is closed.
80 * Must be called with the rtd->pcm_mutex being held
82 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime
*rtd
, int stream
)
84 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
87 lockdep_assert_held(&rtd
->pcm_mutex
);
89 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
90 cpu_dai
->playback_active
--;
91 for (i
= 0; i
< rtd
->num_codecs
; i
++)
92 rtd
->codec_dais
[i
]->playback_active
--;
94 cpu_dai
->capture_active
--;
95 for (i
= 0; i
< rtd
->num_codecs
; i
++)
96 rtd
->codec_dais
[i
]->capture_active
--;
100 cpu_dai
->component
->active
--;
101 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
102 rtd
->codec_dais
[i
]->component
->active
--;
103 rtd
->codec_dais
[i
]->active
--;
108 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
109 * @rtd: The ASoC PCM runtime that should be checked.
111 * This function checks whether the power down delay should be ignored for a
112 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
113 * been configured to ignore the delay, or if none of the components benefits
114 * from having the delay.
116 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime
*rtd
)
121 if (!rtd
->pmdown_time
|| rtd
->dai_link
->ignore_pmdown_time
)
124 for (i
= 0; i
< rtd
->num_codecs
; i
++)
125 ignore
&= rtd
->codec_dais
[i
]->component
->ignore_pmdown_time
;
127 return rtd
->cpu_dai
->component
->ignore_pmdown_time
&& ignore
;
131 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
132 * @substream: the pcm substream
133 * @hw: the hardware parameters
135 * Sets the substream runtime hardware parameters.
137 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
138 const struct snd_pcm_hardware
*hw
)
140 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
141 runtime
->hw
.info
= hw
->info
;
142 runtime
->hw
.formats
= hw
->formats
;
143 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
144 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
145 runtime
->hw
.periods_min
= hw
->periods_min
;
146 runtime
->hw
.periods_max
= hw
->periods_max
;
147 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
148 runtime
->hw
.fifo_size
= hw
->fifo_size
;
151 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
153 /* DPCM stream event, send event to FE and all active BEs. */
154 int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime
*fe
, int dir
,
157 struct snd_soc_dpcm
*dpcm
;
159 list_for_each_entry(dpcm
, &fe
->dpcm
[dir
].be_clients
, list_be
) {
161 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
163 dev_dbg(be
->dev
, "ASoC: BE %s event %d dir %d\n",
164 be
->dai_link
->name
, event
, dir
);
166 snd_soc_dapm_stream_event(be
, dir
, event
);
169 snd_soc_dapm_stream_event(fe
, dir
, event
);
174 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
,
175 struct snd_soc_dai
*soc_dai
)
177 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
180 if (soc_dai
->rate
&& (soc_dai
->driver
->symmetric_rates
||
181 rtd
->dai_link
->symmetric_rates
)) {
182 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %dHz rate\n",
185 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
186 SNDRV_PCM_HW_PARAM_RATE
,
187 soc_dai
->rate
, soc_dai
->rate
);
189 dev_err(soc_dai
->dev
,
190 "ASoC: Unable to apply rate constraint: %d\n",
196 if (soc_dai
->channels
&& (soc_dai
->driver
->symmetric_channels
||
197 rtd
->dai_link
->symmetric_channels
)) {
198 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %d channel(s)\n",
201 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
202 SNDRV_PCM_HW_PARAM_CHANNELS
,
206 dev_err(soc_dai
->dev
,
207 "ASoC: Unable to apply channel symmetry constraint: %d\n",
213 if (soc_dai
->sample_bits
&& (soc_dai
->driver
->symmetric_samplebits
||
214 rtd
->dai_link
->symmetric_samplebits
)) {
215 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %d sample bits\n",
216 soc_dai
->sample_bits
);
218 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
219 SNDRV_PCM_HW_PARAM_SAMPLE_BITS
,
220 soc_dai
->sample_bits
,
221 soc_dai
->sample_bits
);
223 dev_err(soc_dai
->dev
,
224 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
233 static int soc_pcm_params_symmetry(struct snd_pcm_substream
*substream
,
234 struct snd_pcm_hw_params
*params
)
236 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
237 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
238 unsigned int rate
, channels
, sample_bits
, symmetry
, i
;
240 rate
= params_rate(params
);
241 channels
= params_channels(params
);
242 sample_bits
= snd_pcm_format_physical_width(params_format(params
));
244 /* reject unmatched parameters when applying symmetry */
245 symmetry
= cpu_dai
->driver
->symmetric_rates
||
246 rtd
->dai_link
->symmetric_rates
;
248 for (i
= 0; i
< rtd
->num_codecs
; i
++)
249 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_rates
;
251 if (symmetry
&& cpu_dai
->rate
&& cpu_dai
->rate
!= rate
) {
252 dev_err(rtd
->dev
, "ASoC: unmatched rate symmetry: %d - %d\n",
253 cpu_dai
->rate
, rate
);
257 symmetry
= cpu_dai
->driver
->symmetric_channels
||
258 rtd
->dai_link
->symmetric_channels
;
260 for (i
= 0; i
< rtd
->num_codecs
; i
++)
261 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_channels
;
263 if (symmetry
&& cpu_dai
->channels
&& cpu_dai
->channels
!= channels
) {
264 dev_err(rtd
->dev
, "ASoC: unmatched channel symmetry: %d - %d\n",
265 cpu_dai
->channels
, channels
);
269 symmetry
= cpu_dai
->driver
->symmetric_samplebits
||
270 rtd
->dai_link
->symmetric_samplebits
;
272 for (i
= 0; i
< rtd
->num_codecs
; i
++)
273 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_samplebits
;
275 if (symmetry
&& cpu_dai
->sample_bits
&& cpu_dai
->sample_bits
!= sample_bits
) {
276 dev_err(rtd
->dev
, "ASoC: unmatched sample bits symmetry: %d - %d\n",
277 cpu_dai
->sample_bits
, sample_bits
);
284 static bool soc_pcm_has_symmetry(struct snd_pcm_substream
*substream
)
286 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
287 struct snd_soc_dai_driver
*cpu_driver
= rtd
->cpu_dai
->driver
;
288 struct snd_soc_dai_link
*link
= rtd
->dai_link
;
289 unsigned int symmetry
, i
;
291 symmetry
= cpu_driver
->symmetric_rates
|| link
->symmetric_rates
||
292 cpu_driver
->symmetric_channels
|| link
->symmetric_channels
||
293 cpu_driver
->symmetric_samplebits
|| link
->symmetric_samplebits
;
295 for (i
= 0; i
< rtd
->num_codecs
; i
++)
296 symmetry
= symmetry
||
297 rtd
->codec_dais
[i
]->driver
->symmetric_rates
||
298 rtd
->codec_dais
[i
]->driver
->symmetric_channels
||
299 rtd
->codec_dais
[i
]->driver
->symmetric_samplebits
;
304 static void soc_pcm_set_msb(struct snd_pcm_substream
*substream
, int bits
)
306 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
312 ret
= snd_pcm_hw_constraint_msbits(substream
->runtime
, 0, 0, bits
);
314 dev_warn(rtd
->dev
, "ASoC: Failed to set MSB %d: %d\n",
318 static void soc_pcm_apply_msb(struct snd_pcm_substream
*substream
)
320 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
321 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
322 struct snd_soc_dai
*codec_dai
;
324 unsigned int bits
= 0, cpu_bits
;
326 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
327 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
328 codec_dai
= rtd
->codec_dais
[i
];
329 if (codec_dai
->driver
->playback
.sig_bits
== 0) {
333 bits
= max(codec_dai
->driver
->playback
.sig_bits
, bits
);
335 cpu_bits
= cpu_dai
->driver
->playback
.sig_bits
;
337 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
338 codec_dai
= rtd
->codec_dais
[i
];
339 if (codec_dai
->driver
->capture
.sig_bits
== 0) {
343 bits
= max(codec_dai
->driver
->capture
.sig_bits
, bits
);
345 cpu_bits
= cpu_dai
->driver
->capture
.sig_bits
;
348 soc_pcm_set_msb(substream
, bits
);
349 soc_pcm_set_msb(substream
, cpu_bits
);
352 static void soc_pcm_init_runtime_hw(struct snd_pcm_substream
*substream
)
354 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
355 struct snd_pcm_hardware
*hw
= &runtime
->hw
;
356 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
357 struct snd_soc_dai_driver
*cpu_dai_drv
= rtd
->cpu_dai
->driver
;
358 struct snd_soc_dai_driver
*codec_dai_drv
;
359 struct snd_soc_pcm_stream
*codec_stream
;
360 struct snd_soc_pcm_stream
*cpu_stream
;
361 unsigned int chan_min
= 0, chan_max
= UINT_MAX
;
362 unsigned int rate_min
= 0, rate_max
= UINT_MAX
;
363 unsigned int rates
= UINT_MAX
;
364 u64 formats
= ULLONG_MAX
;
367 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
368 cpu_stream
= &cpu_dai_drv
->playback
;
370 cpu_stream
= &cpu_dai_drv
->capture
;
372 /* first calculate min/max only for CODECs in the DAI link */
373 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
374 codec_dai_drv
= rtd
->codec_dais
[i
]->driver
;
375 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
376 codec_stream
= &codec_dai_drv
->playback
;
378 codec_stream
= &codec_dai_drv
->capture
;
379 chan_min
= max(chan_min
, codec_stream
->channels_min
);
380 chan_max
= min(chan_max
, codec_stream
->channels_max
);
381 rate_min
= max(rate_min
, codec_stream
->rate_min
);
382 rate_max
= min_not_zero(rate_max
, codec_stream
->rate_max
);
383 formats
&= codec_stream
->formats
;
384 rates
= snd_pcm_rate_mask_intersect(codec_stream
->rates
, rates
);
388 * chan min/max cannot be enforced if there are multiple CODEC DAIs
389 * connected to a single CPU DAI, use CPU DAI's directly and let
390 * channel allocation be fixed up later
392 if (rtd
->num_codecs
> 1) {
393 chan_min
= cpu_stream
->channels_min
;
394 chan_max
= cpu_stream
->channels_max
;
397 hw
->channels_min
= max(chan_min
, cpu_stream
->channels_min
);
398 hw
->channels_max
= min(chan_max
, cpu_stream
->channels_max
);
400 hw
->formats
&= formats
& cpu_stream
->formats
;
402 hw
->formats
= formats
& cpu_stream
->formats
;
403 hw
->rates
= snd_pcm_rate_mask_intersect(rates
, cpu_stream
->rates
);
405 snd_pcm_limit_hw_rates(runtime
);
407 hw
->rate_min
= max(hw
->rate_min
, cpu_stream
->rate_min
);
408 hw
->rate_min
= max(hw
->rate_min
, rate_min
);
409 hw
->rate_max
= min_not_zero(hw
->rate_max
, cpu_stream
->rate_max
);
410 hw
->rate_max
= min_not_zero(hw
->rate_max
, rate_max
);
414 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
415 * then initialized and any private data can be allocated. This also calls
416 * startup for the cpu DAI, platform, machine and codec DAI.
418 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
420 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
421 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
422 struct snd_soc_platform
*platform
= rtd
->platform
;
423 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
424 struct snd_soc_dai
*codec_dai
;
425 const char *codec_dai_name
= "multicodec";
428 pinctrl_pm_select_default_state(cpu_dai
->dev
);
429 for (i
= 0; i
< rtd
->num_codecs
; i
++)
430 pinctrl_pm_select_default_state(rtd
->codec_dais
[i
]->dev
);
431 pm_runtime_get_sync(cpu_dai
->dev
);
432 for (i
= 0; i
< rtd
->num_codecs
; i
++)
433 pm_runtime_get_sync(rtd
->codec_dais
[i
]->dev
);
434 pm_runtime_get_sync(platform
->dev
);
436 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
438 /* startup the audio subsystem */
439 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->startup
) {
440 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
442 dev_err(cpu_dai
->dev
, "ASoC: can't open interface"
443 " %s: %d\n", cpu_dai
->name
, ret
);
448 if (platform
->driver
->ops
&& platform
->driver
->ops
->open
) {
449 ret
= platform
->driver
->ops
->open(substream
);
451 dev_err(platform
->dev
, "ASoC: can't open platform"
452 " %s: %d\n", platform
->component
.name
, ret
);
457 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
458 codec_dai
= rtd
->codec_dais
[i
];
459 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->startup
) {
460 ret
= codec_dai
->driver
->ops
->startup(substream
,
463 dev_err(codec_dai
->dev
,
464 "ASoC: can't open codec %s: %d\n",
465 codec_dai
->name
, ret
);
470 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
471 codec_dai
->tx_mask
= 0;
473 codec_dai
->rx_mask
= 0;
476 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
477 ret
= rtd
->dai_link
->ops
->startup(substream
);
479 pr_err("ASoC: %s startup failed: %d\n",
480 rtd
->dai_link
->name
, ret
);
485 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
486 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
)
489 /* Check that the codec and cpu DAIs are compatible */
490 soc_pcm_init_runtime_hw(substream
);
492 if (rtd
->num_codecs
== 1)
493 codec_dai_name
= rtd
->codec_dai
->name
;
495 if (soc_pcm_has_symmetry(substream
))
496 runtime
->hw
.info
|= SNDRV_PCM_INFO_JOINT_DUPLEX
;
499 if (!runtime
->hw
.rates
) {
500 printk(KERN_ERR
"ASoC: %s <-> %s No matching rates\n",
501 codec_dai_name
, cpu_dai
->name
);
504 if (!runtime
->hw
.formats
) {
505 printk(KERN_ERR
"ASoC: %s <-> %s No matching formats\n",
506 codec_dai_name
, cpu_dai
->name
);
509 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
||
510 runtime
->hw
.channels_min
> runtime
->hw
.channels_max
) {
511 printk(KERN_ERR
"ASoC: %s <-> %s No matching channels\n",
512 codec_dai_name
, cpu_dai
->name
);
516 soc_pcm_apply_msb(substream
);
518 /* Symmetry only applies if we've already got an active stream. */
519 if (cpu_dai
->active
) {
520 ret
= soc_pcm_apply_symmetry(substream
, cpu_dai
);
525 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
526 if (rtd
->codec_dais
[i
]->active
) {
527 ret
= soc_pcm_apply_symmetry(substream
,
534 pr_debug("ASoC: %s <-> %s info:\n",
535 codec_dai_name
, cpu_dai
->name
);
536 pr_debug("ASoC: rate mask 0x%x\n", runtime
->hw
.rates
);
537 pr_debug("ASoC: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
538 runtime
->hw
.channels_max
);
539 pr_debug("ASoC: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
540 runtime
->hw
.rate_max
);
544 snd_soc_runtime_activate(rtd
, substream
->stream
);
546 mutex_unlock(&rtd
->pcm_mutex
);
550 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
551 rtd
->dai_link
->ops
->shutdown(substream
);
558 codec_dai
= rtd
->codec_dais
[i
];
559 if (codec_dai
->driver
->ops
->shutdown
)
560 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
563 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
564 platform
->driver
->ops
->close(substream
);
567 if (cpu_dai
->driver
->ops
->shutdown
)
568 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
570 mutex_unlock(&rtd
->pcm_mutex
);
572 pm_runtime_put(platform
->dev
);
573 for (i
= 0; i
< rtd
->num_codecs
; i
++)
574 pm_runtime_put(rtd
->codec_dais
[i
]->dev
);
575 pm_runtime_put(cpu_dai
->dev
);
576 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
577 if (!rtd
->codec_dais
[i
]->active
)
578 pinctrl_pm_select_sleep_state(rtd
->codec_dais
[i
]->dev
);
580 if (!cpu_dai
->active
)
581 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
587 * Power down the audio subsystem pmdown_time msecs after close is called.
588 * This is to ensure there are no pops or clicks in between any music tracks
589 * due to DAPM power cycling.
591 static void close_delayed_work(struct work_struct
*work
)
593 struct snd_soc_pcm_runtime
*rtd
=
594 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
595 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[0];
597 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
599 dev_dbg(rtd
->dev
, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
600 codec_dai
->driver
->playback
.stream_name
,
601 codec_dai
->playback_active
? "active" : "inactive",
602 rtd
->pop_wait
? "yes" : "no");
604 /* are we waiting on this codec DAI stream */
605 if (rtd
->pop_wait
== 1) {
607 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_PLAYBACK
,
608 SND_SOC_DAPM_STREAM_STOP
);
611 mutex_unlock(&rtd
->pcm_mutex
);
615 * Called by ALSA when a PCM substream is closed. Private data can be
616 * freed here. The cpu DAI, codec DAI, machine and platform are also
619 static int soc_pcm_close(struct snd_pcm_substream
*substream
)
621 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
622 struct snd_soc_platform
*platform
= rtd
->platform
;
623 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
624 struct snd_soc_dai
*codec_dai
;
627 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
629 snd_soc_runtime_deactivate(rtd
, substream
->stream
);
631 /* clear the corresponding DAIs rate when inactive */
632 if (!cpu_dai
->active
)
635 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
636 codec_dai
= rtd
->codec_dais
[i
];
637 if (!codec_dai
->active
)
641 snd_soc_dai_digital_mute(cpu_dai
, 1, substream
->stream
);
643 if (cpu_dai
->driver
->ops
->shutdown
)
644 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
646 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
647 codec_dai
= rtd
->codec_dais
[i
];
648 if (codec_dai
->driver
->ops
->shutdown
)
649 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
652 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
653 rtd
->dai_link
->ops
->shutdown(substream
);
655 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
656 platform
->driver
->ops
->close(substream
);
658 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
659 if (snd_soc_runtime_ignore_pmdown_time(rtd
)) {
660 /* powered down playback stream now */
661 snd_soc_dapm_stream_event(rtd
,
662 SNDRV_PCM_STREAM_PLAYBACK
,
663 SND_SOC_DAPM_STREAM_STOP
);
665 /* start delayed pop wq here for playback streams */
667 queue_delayed_work(system_power_efficient_wq
,
669 msecs_to_jiffies(rtd
->pmdown_time
));
672 /* capture streams can be powered down now */
673 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_CAPTURE
,
674 SND_SOC_DAPM_STREAM_STOP
);
677 mutex_unlock(&rtd
->pcm_mutex
);
679 pm_runtime_put(platform
->dev
);
680 for (i
= 0; i
< rtd
->num_codecs
; i
++)
681 pm_runtime_put(rtd
->codec_dais
[i
]->dev
);
682 pm_runtime_put(cpu_dai
->dev
);
683 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
684 if (!rtd
->codec_dais
[i
]->active
)
685 pinctrl_pm_select_sleep_state(rtd
->codec_dais
[i
]->dev
);
687 if (!cpu_dai
->active
)
688 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
694 * Called by ALSA when the PCM substream is prepared, can set format, sample
695 * rate, etc. This function is non atomic and can be called multiple times,
696 * it can refer to the runtime info.
698 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
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
;
706 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
708 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
709 ret
= rtd
->dai_link
->ops
->prepare(substream
);
711 dev_err(rtd
->card
->dev
, "ASoC: machine prepare error:"
717 if (platform
->driver
->ops
&& platform
->driver
->ops
->prepare
) {
718 ret
= platform
->driver
->ops
->prepare(substream
);
720 dev_err(platform
->dev
, "ASoC: platform prepare error:"
726 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
727 codec_dai
= rtd
->codec_dais
[i
];
728 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->prepare
) {
729 ret
= codec_dai
->driver
->ops
->prepare(substream
,
732 dev_err(codec_dai
->dev
,
733 "ASoC: codec DAI prepare error: %d\n",
740 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->prepare
) {
741 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
743 dev_err(cpu_dai
->dev
,
744 "ASoC: cpu DAI prepare error: %d\n", ret
);
749 /* cancel any delayed stream shutdown that is pending */
750 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
753 cancel_delayed_work(&rtd
->delayed_work
);
756 snd_soc_dapm_stream_event(rtd
, substream
->stream
,
757 SND_SOC_DAPM_STREAM_START
);
759 for (i
= 0; i
< rtd
->num_codecs
; i
++)
760 snd_soc_dai_digital_mute(rtd
->codec_dais
[i
], 0,
762 snd_soc_dai_digital_mute(cpu_dai
, 0, substream
->stream
);
765 mutex_unlock(&rtd
->pcm_mutex
);
769 static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params
*params
,
772 struct snd_interval
*interval
;
773 int channels
= hweight_long(mask
);
775 interval
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
776 interval
->min
= channels
;
777 interval
->max
= channels
;
780 int soc_dai_hw_params(struct snd_pcm_substream
*substream
,
781 struct snd_pcm_hw_params
*params
,
782 struct snd_soc_dai
*dai
)
786 if (dai
->driver
->ops
&& dai
->driver
->ops
->hw_params
) {
787 ret
= dai
->driver
->ops
->hw_params(substream
, params
, dai
);
789 dev_err(dai
->dev
, "ASoC: can't set %s hw params: %d\n",
799 * Called by ALSA when the hardware params are set by application. This
800 * function can also be called multiple times and can allocate buffers
801 * (using snd_pcm_lib_* ). It's non-atomic.
803 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
804 struct snd_pcm_hw_params
*params
)
806 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
807 struct snd_soc_platform
*platform
= rtd
->platform
;
808 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
811 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
813 ret
= soc_pcm_params_symmetry(substream
, params
);
817 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
818 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
820 dev_err(rtd
->card
->dev
, "ASoC: machine hw_params"
821 " failed: %d\n", ret
);
826 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
827 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
828 struct snd_pcm_hw_params codec_params
;
830 /* copy params for each codec */
831 codec_params
= *params
;
833 /* fixup params based on TDM slot masks */
834 if (codec_dai
->tx_mask
)
835 soc_pcm_codec_params_fixup(&codec_params
,
837 if (codec_dai
->rx_mask
)
838 soc_pcm_codec_params_fixup(&codec_params
,
841 ret
= soc_dai_hw_params(substream
, &codec_params
, codec_dai
);
845 codec_dai
->rate
= params_rate(&codec_params
);
846 codec_dai
->channels
= params_channels(&codec_params
);
847 codec_dai
->sample_bits
= snd_pcm_format_physical_width(
848 params_format(&codec_params
));
851 ret
= soc_dai_hw_params(substream
, params
, cpu_dai
);
855 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_params
) {
856 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
858 dev_err(platform
->dev
, "ASoC: %s hw params failed: %d\n",
859 platform
->component
.name
, ret
);
864 /* store the parameters for each DAIs */
865 cpu_dai
->rate
= params_rate(params
);
866 cpu_dai
->channels
= params_channels(params
);
867 cpu_dai
->sample_bits
=
868 snd_pcm_format_physical_width(params_format(params
));
871 mutex_unlock(&rtd
->pcm_mutex
);
875 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->hw_free
)
876 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
883 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
884 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->hw_free
)
885 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
889 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
890 rtd
->dai_link
->ops
->hw_free(substream
);
892 mutex_unlock(&rtd
->pcm_mutex
);
897 * Frees resources allocated by hw_params, can be called multiple times
899 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
901 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
902 struct snd_soc_platform
*platform
= rtd
->platform
;
903 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
904 struct snd_soc_dai
*codec_dai
;
905 bool playback
= substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
;
908 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
910 /* clear the corresponding DAIs parameters when going to be inactive */
911 if (cpu_dai
->active
== 1) {
913 cpu_dai
->channels
= 0;
914 cpu_dai
->sample_bits
= 0;
917 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
918 codec_dai
= rtd
->codec_dais
[i
];
919 if (codec_dai
->active
== 1) {
921 codec_dai
->channels
= 0;
922 codec_dai
->sample_bits
= 0;
926 /* apply codec digital mute */
927 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
928 if ((playback
&& rtd
->codec_dais
[i
]->playback_active
== 1) ||
929 (!playback
&& rtd
->codec_dais
[i
]->capture_active
== 1))
930 snd_soc_dai_digital_mute(rtd
->codec_dais
[i
], 1,
934 /* free any machine hw params */
935 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
936 rtd
->dai_link
->ops
->hw_free(substream
);
938 /* free any DMA resources */
939 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_free
)
940 platform
->driver
->ops
->hw_free(substream
);
942 /* now free hw params for the DAIs */
943 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
944 codec_dai
= rtd
->codec_dais
[i
];
945 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->hw_free
)
946 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
949 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->hw_free
)
950 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
952 mutex_unlock(&rtd
->pcm_mutex
);
956 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
958 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
959 struct snd_soc_platform
*platform
= rtd
->platform
;
960 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
961 struct snd_soc_dai
*codec_dai
;
964 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
965 codec_dai
= rtd
->codec_dais
[i
];
966 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->trigger
) {
967 ret
= codec_dai
->driver
->ops
->trigger(substream
,
974 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
) {
975 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
980 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->trigger
) {
981 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
986 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->trigger
) {
987 ret
= rtd
->dai_link
->ops
->trigger(substream
, cmd
);
995 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream
*substream
,
998 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
999 struct snd_soc_platform
*platform
= rtd
->platform
;
1000 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1001 struct snd_soc_dai
*codec_dai
;
1004 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1005 codec_dai
= rtd
->codec_dais
[i
];
1006 if (codec_dai
->driver
->ops
&&
1007 codec_dai
->driver
->ops
->bespoke_trigger
) {
1008 ret
= codec_dai
->driver
->ops
->bespoke_trigger(substream
,
1015 if (platform
->driver
->bespoke_trigger
) {
1016 ret
= platform
->driver
->bespoke_trigger(substream
, cmd
);
1021 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->bespoke_trigger
) {
1022 ret
= cpu_dai
->driver
->ops
->bespoke_trigger(substream
, cmd
, cpu_dai
);
1029 * soc level wrapper for pointer callback
1030 * If cpu_dai, codec_dai, platform driver has the delay callback, than
1031 * the runtime->delay will be updated accordingly.
1033 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
1035 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1036 struct snd_soc_platform
*platform
= rtd
->platform
;
1037 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1038 struct snd_soc_dai
*codec_dai
;
1039 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1040 snd_pcm_uframes_t offset
= 0;
1041 snd_pcm_sframes_t delay
= 0;
1042 snd_pcm_sframes_t codec_delay
= 0;
1045 if (platform
->driver
->ops
&& platform
->driver
->ops
->pointer
)
1046 offset
= platform
->driver
->ops
->pointer(substream
);
1048 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->delay
)
1049 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
1051 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1052 codec_dai
= rtd
->codec_dais
[i
];
1053 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->delay
)
1054 codec_delay
= max(codec_delay
,
1055 codec_dai
->driver
->ops
->delay(substream
,
1058 delay
+= codec_delay
;
1061 * None of the existing platform drivers implement delay(), so
1062 * for now the codec_dai of first multicodec entry is used
1064 if (platform
->driver
->delay
)
1065 delay
+= platform
->driver
->delay(substream
, rtd
->codec_dais
[0]);
1067 runtime
->delay
= delay
;
1072 /* connect a FE and BE */
1073 static int dpcm_be_connect(struct snd_soc_pcm_runtime
*fe
,
1074 struct snd_soc_pcm_runtime
*be
, int stream
)
1076 struct snd_soc_dpcm
*dpcm
;
1078 /* only add new dpcms */
1079 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1080 if (dpcm
->be
== be
&& dpcm
->fe
== fe
)
1084 dpcm
= kzalloc(sizeof(struct snd_soc_dpcm
), GFP_KERNEL
);
1090 be
->dpcm
[stream
].runtime
= fe
->dpcm
[stream
].runtime
;
1091 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_NEW
;
1092 list_add(&dpcm
->list_be
, &fe
->dpcm
[stream
].be_clients
);
1093 list_add(&dpcm
->list_fe
, &be
->dpcm
[stream
].fe_clients
);
1095 dev_dbg(fe
->dev
, "connected new DPCM %s path %s %s %s\n",
1096 stream
? "capture" : "playback", fe
->dai_link
->name
,
1097 stream
? "<-" : "->", be
->dai_link
->name
);
1099 #ifdef CONFIG_DEBUG_FS
1100 dpcm
->debugfs_state
= debugfs_create_u32(be
->dai_link
->name
, 0644,
1101 fe
->debugfs_dpcm_root
, &dpcm
->state
);
1106 /* reparent a BE onto another FE */
1107 static void dpcm_be_reparent(struct snd_soc_pcm_runtime
*fe
,
1108 struct snd_soc_pcm_runtime
*be
, int stream
)
1110 struct snd_soc_dpcm
*dpcm
;
1111 struct snd_pcm_substream
*fe_substream
, *be_substream
;
1113 /* reparent if BE is connected to other FEs */
1114 if (!be
->dpcm
[stream
].users
)
1117 be_substream
= snd_soc_dpcm_get_substream(be
, stream
);
1119 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
1123 dev_dbg(fe
->dev
, "reparent %s path %s %s %s\n",
1124 stream
? "capture" : "playback",
1125 dpcm
->fe
->dai_link
->name
,
1126 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
1128 fe_substream
= snd_soc_dpcm_get_substream(dpcm
->fe
, stream
);
1129 be_substream
->runtime
= fe_substream
->runtime
;
1134 /* disconnect a BE and FE */
1135 void dpcm_be_disconnect(struct snd_soc_pcm_runtime
*fe
, int stream
)
1137 struct snd_soc_dpcm
*dpcm
, *d
;
1139 list_for_each_entry_safe(dpcm
, d
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1140 dev_dbg(fe
->dev
, "ASoC: BE %s disconnect check for %s\n",
1141 stream
? "capture" : "playback",
1142 dpcm
->be
->dai_link
->name
);
1144 if (dpcm
->state
!= SND_SOC_DPCM_LINK_STATE_FREE
)
1147 dev_dbg(fe
->dev
, "freed DSP %s path %s %s %s\n",
1148 stream
? "capture" : "playback", fe
->dai_link
->name
,
1149 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
1151 /* BEs still alive need new FE */
1152 dpcm_be_reparent(fe
, dpcm
->be
, stream
);
1154 #ifdef CONFIG_DEBUG_FS
1155 debugfs_remove(dpcm
->debugfs_state
);
1157 list_del(&dpcm
->list_be
);
1158 list_del(&dpcm
->list_fe
);
1163 /* get BE for DAI widget and stream */
1164 static struct snd_soc_pcm_runtime
*dpcm_get_be(struct snd_soc_card
*card
,
1165 struct snd_soc_dapm_widget
*widget
, int stream
)
1167 struct snd_soc_pcm_runtime
*be
;
1170 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1171 for (i
= 0; i
< card
->num_links
; i
++) {
1174 if (!be
->dai_link
->no_pcm
)
1177 if (be
->cpu_dai
->playback_widget
== widget
)
1180 for (j
= 0; j
< be
->num_codecs
; j
++) {
1181 struct snd_soc_dai
*dai
= be
->codec_dais
[j
];
1182 if (dai
->playback_widget
== widget
)
1188 for (i
= 0; i
< card
->num_links
; i
++) {
1191 if (!be
->dai_link
->no_pcm
)
1194 if (be
->cpu_dai
->capture_widget
== widget
)
1197 for (j
= 0; j
< be
->num_codecs
; j
++) {
1198 struct snd_soc_dai
*dai
= be
->codec_dais
[j
];
1199 if (dai
->capture_widget
== widget
)
1205 dev_err(card
->dev
, "ASoC: can't get %s BE for %s\n",
1206 stream
? "capture" : "playback", widget
->name
);
1210 static inline struct snd_soc_dapm_widget
*
1211 dai_get_widget(struct snd_soc_dai
*dai
, int stream
)
1213 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1214 return dai
->playback_widget
;
1216 return dai
->capture_widget
;
1219 static int widget_in_list(struct snd_soc_dapm_widget_list
*list
,
1220 struct snd_soc_dapm_widget
*widget
)
1224 for (i
= 0; i
< list
->num_widgets
; i
++) {
1225 if (widget
== list
->widgets
[i
])
1232 int dpcm_path_get(struct snd_soc_pcm_runtime
*fe
,
1233 int stream
, struct snd_soc_dapm_widget_list
**list_
)
1235 struct snd_soc_dai
*cpu_dai
= fe
->cpu_dai
;
1236 struct snd_soc_dapm_widget_list
*list
;
1239 list
= kzalloc(sizeof(struct snd_soc_dapm_widget_list
) +
1240 sizeof(struct snd_soc_dapm_widget
*), GFP_KERNEL
);
1244 /* get number of valid DAI paths and their widgets */
1245 paths
= snd_soc_dapm_dai_get_connected_widgets(cpu_dai
, stream
, &list
);
1247 dev_dbg(fe
->dev
, "ASoC: found %d audio %s paths\n", paths
,
1248 stream
? "capture" : "playback");
1254 static int dpcm_prune_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
1255 struct snd_soc_dapm_widget_list
**list_
)
1257 struct snd_soc_dpcm
*dpcm
;
1258 struct snd_soc_dapm_widget_list
*list
= *list_
;
1259 struct snd_soc_dapm_widget
*widget
;
1262 /* Destroy any old FE <--> BE connections */
1263 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1266 /* is there a valid CPU DAI widget for this BE */
1267 widget
= dai_get_widget(dpcm
->be
->cpu_dai
, stream
);
1269 /* prune the BE if it's no longer in our active list */
1270 if (widget
&& widget_in_list(list
, widget
))
1273 /* is there a valid CODEC DAI widget for this BE */
1274 for (i
= 0; i
< dpcm
->be
->num_codecs
; i
++) {
1275 struct snd_soc_dai
*dai
= dpcm
->be
->codec_dais
[i
];
1276 widget
= dai_get_widget(dai
, stream
);
1278 /* prune the BE if it's no longer in our active list */
1279 if (widget
&& widget_in_list(list
, widget
))
1283 dev_dbg(fe
->dev
, "ASoC: pruning %s BE %s for %s\n",
1284 stream
? "capture" : "playback",
1285 dpcm
->be
->dai_link
->name
, fe
->dai_link
->name
);
1286 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
1287 dpcm
->be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1291 dev_dbg(fe
->dev
, "ASoC: found %d old BE paths for pruning\n", prune
);
1295 static int dpcm_add_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
1296 struct snd_soc_dapm_widget_list
**list_
)
1298 struct snd_soc_card
*card
= fe
->card
;
1299 struct snd_soc_dapm_widget_list
*list
= *list_
;
1300 struct snd_soc_pcm_runtime
*be
;
1301 int i
, new = 0, err
;
1303 /* Create any new FE <--> BE connections */
1304 for (i
= 0; i
< list
->num_widgets
; i
++) {
1306 switch (list
->widgets
[i
]->id
) {
1307 case snd_soc_dapm_dai_in
:
1308 case snd_soc_dapm_dai_out
:
1314 /* is there a valid BE rtd for this widget */
1315 be
= dpcm_get_be(card
, list
->widgets
[i
], stream
);
1317 dev_err(fe
->dev
, "ASoC: no BE found for %s\n",
1318 list
->widgets
[i
]->name
);
1322 /* make sure BE is a real BE */
1323 if (!be
->dai_link
->no_pcm
)
1326 /* don't connect if FE is not running */
1327 if (!fe
->dpcm
[stream
].runtime
&& !fe
->fe_compr
)
1330 /* newly connected FE and BE */
1331 err
= dpcm_be_connect(fe
, be
, stream
);
1333 dev_err(fe
->dev
, "ASoC: can't connect %s\n",
1334 list
->widgets
[i
]->name
);
1336 } else if (err
== 0) /* already connected */
1340 be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1344 dev_dbg(fe
->dev
, "ASoC: found %d new BE paths\n", new);
1349 * Find the corresponding BE DAIs that source or sink audio to this
1352 int dpcm_process_paths(struct snd_soc_pcm_runtime
*fe
,
1353 int stream
, struct snd_soc_dapm_widget_list
**list
, int new)
1356 return dpcm_add_paths(fe
, stream
, list
);
1358 return dpcm_prune_paths(fe
, stream
, list
);
1361 void dpcm_clear_pending_state(struct snd_soc_pcm_runtime
*fe
, int stream
)
1363 struct snd_soc_dpcm
*dpcm
;
1365 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
1366 dpcm
->be
->dpcm
[stream
].runtime_update
=
1367 SND_SOC_DPCM_UPDATE_NO
;
1370 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime
*fe
,
1373 struct snd_soc_dpcm
*dpcm
;
1375 /* disable any enabled and non active backends */
1376 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1378 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1379 struct snd_pcm_substream
*be_substream
=
1380 snd_soc_dpcm_get_substream(be
, stream
);
1382 if (be
->dpcm
[stream
].users
== 0)
1383 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1384 stream
? "capture" : "playback",
1385 be
->dpcm
[stream
].state
);
1387 if (--be
->dpcm
[stream
].users
!= 0)
1390 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1393 soc_pcm_close(be_substream
);
1394 be_substream
->runtime
= NULL
;
1395 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1399 int dpcm_be_dai_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
1401 struct snd_soc_dpcm
*dpcm
;
1404 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1405 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1407 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1408 struct snd_pcm_substream
*be_substream
=
1409 snd_soc_dpcm_get_substream(be
, stream
);
1411 if (!be_substream
) {
1412 dev_err(be
->dev
, "ASoC: no backend %s stream\n",
1413 stream
? "capture" : "playback");
1417 /* is this op for this BE ? */
1418 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1421 /* first time the dpcm is open ? */
1422 if (be
->dpcm
[stream
].users
== DPCM_MAX_BE_USERS
)
1423 dev_err(be
->dev
, "ASoC: too many users %s at open %d\n",
1424 stream
? "capture" : "playback",
1425 be
->dpcm
[stream
].state
);
1427 if (be
->dpcm
[stream
].users
++ != 0)
1430 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_NEW
) &&
1431 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_CLOSE
))
1434 dev_dbg(be
->dev
, "ASoC: open %s BE %s\n",
1435 stream
? "capture" : "playback", be
->dai_link
->name
);
1437 be_substream
->runtime
= be
->dpcm
[stream
].runtime
;
1438 err
= soc_pcm_open(be_substream
);
1440 dev_err(be
->dev
, "ASoC: BE open failed %d\n", err
);
1441 be
->dpcm
[stream
].users
--;
1442 if (be
->dpcm
[stream
].users
< 0)
1443 dev_err(be
->dev
, "ASoC: no users %s at unwind %d\n",
1444 stream
? "capture" : "playback",
1445 be
->dpcm
[stream
].state
);
1447 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1451 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1458 /* disable any enabled and non active backends */
1459 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1460 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1461 struct snd_pcm_substream
*be_substream
=
1462 snd_soc_dpcm_get_substream(be
, stream
);
1464 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1467 if (be
->dpcm
[stream
].users
== 0)
1468 dev_err(be
->dev
, "ASoC: no users %s at close %d\n",
1469 stream
? "capture" : "playback",
1470 be
->dpcm
[stream
].state
);
1472 if (--be
->dpcm
[stream
].users
!= 0)
1475 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1478 soc_pcm_close(be_substream
);
1479 be_substream
->runtime
= NULL
;
1480 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1486 static void dpcm_init_runtime_hw(struct snd_pcm_runtime
*runtime
,
1487 struct snd_soc_pcm_stream
*stream
)
1489 runtime
->hw
.rate_min
= stream
->rate_min
;
1490 runtime
->hw
.rate_max
= stream
->rate_max
;
1491 runtime
->hw
.channels_min
= stream
->channels_min
;
1492 runtime
->hw
.channels_max
= stream
->channels_max
;
1493 if (runtime
->hw
.formats
)
1494 runtime
->hw
.formats
&= stream
->formats
;
1496 runtime
->hw
.formats
= stream
->formats
;
1497 runtime
->hw
.rates
= stream
->rates
;
1500 static void dpcm_set_fe_runtime(struct snd_pcm_substream
*substream
)
1502 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1503 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1504 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1505 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
1507 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1508 dpcm_init_runtime_hw(runtime
, &cpu_dai_drv
->playback
);
1510 dpcm_init_runtime_hw(runtime
, &cpu_dai_drv
->capture
);
1513 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream
*substream
, int cmd
);
1515 /* Set FE's runtime_update state; the state is protected via PCM stream lock
1516 * for avoiding the race with trigger callback.
1517 * If the state is unset and a trigger is pending while the previous operation,
1518 * process the pending trigger action here.
1520 static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime
*fe
,
1521 int stream
, enum snd_soc_dpcm_update state
)
1523 struct snd_pcm_substream
*substream
=
1524 snd_soc_dpcm_get_substream(fe
, stream
);
1526 snd_pcm_stream_lock_irq(substream
);
1527 if (state
== SND_SOC_DPCM_UPDATE_NO
&& fe
->dpcm
[stream
].trigger_pending
) {
1528 dpcm_fe_dai_do_trigger(substream
,
1529 fe
->dpcm
[stream
].trigger_pending
- 1);
1530 fe
->dpcm
[stream
].trigger_pending
= 0;
1532 fe
->dpcm
[stream
].runtime_update
= state
;
1533 snd_pcm_stream_unlock_irq(substream
);
1536 static int dpcm_fe_dai_startup(struct snd_pcm_substream
*fe_substream
)
1538 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1539 struct snd_pcm_runtime
*runtime
= fe_substream
->runtime
;
1540 int stream
= fe_substream
->stream
, ret
= 0;
1542 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1544 ret
= dpcm_be_dai_startup(fe
, fe_substream
->stream
);
1546 dev_err(fe
->dev
,"ASoC: failed to start some BEs %d\n", ret
);
1550 dev_dbg(fe
->dev
, "ASoC: open FE %s\n", fe
->dai_link
->name
);
1552 /* start the DAI frontend */
1553 ret
= soc_pcm_open(fe_substream
);
1555 dev_err(fe
->dev
,"ASoC: failed to start FE %d\n", ret
);
1559 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1561 dpcm_set_fe_runtime(fe_substream
);
1562 snd_pcm_limit_hw_rates(runtime
);
1564 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1568 dpcm_be_dai_startup_unwind(fe
, fe_substream
->stream
);
1570 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1574 int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
1576 struct snd_soc_dpcm
*dpcm
;
1578 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1579 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1581 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1582 struct snd_pcm_substream
*be_substream
=
1583 snd_soc_dpcm_get_substream(be
, stream
);
1585 /* is this op for this BE ? */
1586 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1589 if (be
->dpcm
[stream
].users
== 0)
1590 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1591 stream
? "capture" : "playback",
1592 be
->dpcm
[stream
].state
);
1594 if (--be
->dpcm
[stream
].users
!= 0)
1597 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1598 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
))
1601 dev_dbg(be
->dev
, "ASoC: close BE %s\n",
1602 dpcm
->fe
->dai_link
->name
);
1604 soc_pcm_close(be_substream
);
1605 be_substream
->runtime
= NULL
;
1607 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1612 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream
*substream
)
1614 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1615 int stream
= substream
->stream
;
1617 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1619 /* shutdown the BEs */
1620 dpcm_be_dai_shutdown(fe
, substream
->stream
);
1622 dev_dbg(fe
->dev
, "ASoC: close FE %s\n", fe
->dai_link
->name
);
1624 /* now shutdown the frontend */
1625 soc_pcm_close(substream
);
1627 /* run the stream event for each BE */
1628 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_STOP
);
1630 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1631 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1635 int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime
*fe
, int stream
)
1637 struct snd_soc_dpcm
*dpcm
;
1639 /* only hw_params backends that are either sinks or sources
1640 * to this frontend DAI */
1641 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1643 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1644 struct snd_pcm_substream
*be_substream
=
1645 snd_soc_dpcm_get_substream(be
, stream
);
1647 /* is this op for this BE ? */
1648 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1651 /* only free hw when no longer used - check all FEs */
1652 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1655 /* do not free hw if this BE is used by other FE */
1656 if (be
->dpcm
[stream
].users
> 1)
1659 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1660 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
1661 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1662 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PAUSED
) &&
1663 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1666 dev_dbg(be
->dev
, "ASoC: hw_free BE %s\n",
1667 dpcm
->fe
->dai_link
->name
);
1669 soc_pcm_hw_free(be_substream
);
1671 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1677 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream
*substream
)
1679 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1680 int err
, stream
= substream
->stream
;
1682 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1683 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1685 dev_dbg(fe
->dev
, "ASoC: hw_free FE %s\n", fe
->dai_link
->name
);
1687 /* call hw_free on the frontend */
1688 err
= soc_pcm_hw_free(substream
);
1690 dev_err(fe
->dev
,"ASoC: hw_free FE %s failed\n",
1691 fe
->dai_link
->name
);
1693 /* only hw_params backends that are either sinks or sources
1694 * to this frontend DAI */
1695 err
= dpcm_be_dai_hw_free(fe
, stream
);
1697 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1698 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1700 mutex_unlock(&fe
->card
->mutex
);
1704 int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime
*fe
, int stream
)
1706 struct snd_soc_dpcm
*dpcm
;
1709 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1711 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1712 struct snd_pcm_substream
*be_substream
=
1713 snd_soc_dpcm_get_substream(be
, stream
);
1715 /* is this op for this BE ? */
1716 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1719 /* only allow hw_params() if no connected FEs are running */
1720 if (!snd_soc_dpcm_can_be_params(fe
, be
, stream
))
1723 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1724 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1725 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
))
1728 dev_dbg(be
->dev
, "ASoC: hw_params BE %s\n",
1729 dpcm
->fe
->dai_link
->name
);
1731 /* copy params for each dpcm */
1732 memcpy(&dpcm
->hw_params
, &fe
->dpcm
[stream
].hw_params
,
1733 sizeof(struct snd_pcm_hw_params
));
1735 /* perform any hw_params fixups */
1736 if (be
->dai_link
->be_hw_params_fixup
) {
1737 ret
= be
->dai_link
->be_hw_params_fixup(be
,
1741 "ASoC: hw_params BE fixup failed %d\n",
1747 ret
= soc_pcm_hw_params(be_substream
, &dpcm
->hw_params
);
1749 dev_err(dpcm
->be
->dev
,
1750 "ASoC: hw_params BE failed %d\n", ret
);
1754 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1759 /* disable any enabled and non active backends */
1760 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1761 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1762 struct snd_pcm_substream
*be_substream
=
1763 snd_soc_dpcm_get_substream(be
, stream
);
1765 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1768 /* only allow hw_free() if no connected FEs are running */
1769 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1772 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1773 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1774 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1775 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1778 soc_pcm_hw_free(be_substream
);
1784 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream
*substream
,
1785 struct snd_pcm_hw_params
*params
)
1787 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1788 int ret
, stream
= substream
->stream
;
1790 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1791 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1793 memcpy(&fe
->dpcm
[substream
->stream
].hw_params
, params
,
1794 sizeof(struct snd_pcm_hw_params
));
1795 ret
= dpcm_be_dai_hw_params(fe
, substream
->stream
);
1797 dev_err(fe
->dev
,"ASoC: hw_params BE failed %d\n", ret
);
1801 dev_dbg(fe
->dev
, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
1802 fe
->dai_link
->name
, params_rate(params
),
1803 params_channels(params
), params_format(params
));
1805 /* call hw_params on the frontend */
1806 ret
= soc_pcm_hw_params(substream
, params
);
1808 dev_err(fe
->dev
,"ASoC: hw_params FE failed %d\n", ret
);
1809 dpcm_be_dai_hw_free(fe
, stream
);
1811 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1814 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1815 mutex_unlock(&fe
->card
->mutex
);
1819 static int dpcm_do_trigger(struct snd_soc_dpcm
*dpcm
,
1820 struct snd_pcm_substream
*substream
, int cmd
)
1824 dev_dbg(dpcm
->be
->dev
, "ASoC: trigger BE %s cmd %d\n",
1825 dpcm
->fe
->dai_link
->name
, cmd
);
1827 ret
= soc_pcm_trigger(substream
, cmd
);
1829 dev_err(dpcm
->be
->dev
,"ASoC: trigger BE failed %d\n", ret
);
1834 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime
*fe
, int stream
,
1837 struct snd_soc_dpcm
*dpcm
;
1840 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1842 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1843 struct snd_pcm_substream
*be_substream
=
1844 snd_soc_dpcm_get_substream(be
, stream
);
1846 /* is this op for this BE ? */
1847 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1851 case SNDRV_PCM_TRIGGER_START
:
1852 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
1853 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1856 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1860 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1862 case SNDRV_PCM_TRIGGER_RESUME
:
1863 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_SUSPEND
))
1866 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1870 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1872 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
1873 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PAUSED
))
1876 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1880 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1882 case SNDRV_PCM_TRIGGER_STOP
:
1883 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1886 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1889 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1893 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
1895 case SNDRV_PCM_TRIGGER_SUSPEND
:
1896 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1899 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1902 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1906 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_SUSPEND
;
1908 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
1909 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
1912 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1915 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
1919 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PAUSED
;
1926 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger
);
1928 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream
*substream
, int cmd
)
1930 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1931 int stream
= substream
->stream
, ret
;
1932 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
1934 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
1937 case SND_SOC_DPCM_TRIGGER_PRE
:
1938 /* call trigger on the frontend before the backend. */
1940 dev_dbg(fe
->dev
, "ASoC: pre trigger FE %s cmd %d\n",
1941 fe
->dai_link
->name
, cmd
);
1943 ret
= soc_pcm_trigger(substream
, cmd
);
1945 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1949 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
1951 case SND_SOC_DPCM_TRIGGER_POST
:
1952 /* call trigger on the frontend after the backend. */
1954 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
1956 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1960 dev_dbg(fe
->dev
, "ASoC: post trigger FE %s cmd %d\n",
1961 fe
->dai_link
->name
, cmd
);
1963 ret
= soc_pcm_trigger(substream
, cmd
);
1965 case SND_SOC_DPCM_TRIGGER_BESPOKE
:
1966 /* bespoke trigger() - handles both FE and BEs */
1968 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd %d\n",
1969 fe
->dai_link
->name
, cmd
);
1971 ret
= soc_pcm_bespoke_trigger(substream
, cmd
);
1973 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
1978 dev_err(fe
->dev
, "ASoC: invalid trigger cmd %d for %s\n", cmd
,
1979 fe
->dai_link
->name
);
1985 case SNDRV_PCM_TRIGGER_START
:
1986 case SNDRV_PCM_TRIGGER_RESUME
:
1987 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
1988 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
1990 case SNDRV_PCM_TRIGGER_STOP
:
1991 case SNDRV_PCM_TRIGGER_SUSPEND
:
1992 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
1993 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
1998 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
2002 static int dpcm_fe_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
)
2004 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
2005 int stream
= substream
->stream
;
2007 /* if FE's runtime_update is already set, we're in race;
2008 * process this trigger later at exit
2010 if (fe
->dpcm
[stream
].runtime_update
!= SND_SOC_DPCM_UPDATE_NO
) {
2011 fe
->dpcm
[stream
].trigger_pending
= cmd
+ 1;
2012 return 0; /* delayed, assuming it's successful */
2015 /* we're alone, let's trigger */
2016 return dpcm_fe_dai_do_trigger(substream
, cmd
);
2019 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime
*fe
, int stream
)
2021 struct snd_soc_dpcm
*dpcm
;
2024 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2026 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2027 struct snd_pcm_substream
*be_substream
=
2028 snd_soc_dpcm_get_substream(be
, stream
);
2030 /* is this op for this BE ? */
2031 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
2034 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2035 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
2038 dev_dbg(be
->dev
, "ASoC: prepare BE %s\n",
2039 dpcm
->fe
->dai_link
->name
);
2041 ret
= soc_pcm_prepare(be_substream
);
2043 dev_err(be
->dev
, "ASoC: backend prepare failed %d\n",
2048 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
2053 static int dpcm_fe_dai_prepare(struct snd_pcm_substream
*substream
)
2055 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
2056 int stream
= substream
->stream
, ret
= 0;
2058 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2060 dev_dbg(fe
->dev
, "ASoC: prepare FE %s\n", fe
->dai_link
->name
);
2062 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
2064 /* there is no point preparing this FE if there are no BEs */
2065 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
2066 dev_err(fe
->dev
, "ASoC: no backend DAIs enabled for %s\n",
2067 fe
->dai_link
->name
);
2072 ret
= dpcm_be_dai_prepare(fe
, substream
->stream
);
2076 /* call prepare on the frontend */
2077 ret
= soc_pcm_prepare(substream
);
2079 dev_err(fe
->dev
,"ASoC: prepare FE %s failed\n",
2080 fe
->dai_link
->name
);
2084 /* run the stream event for each BE */
2085 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_START
);
2086 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
2089 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2090 mutex_unlock(&fe
->card
->mutex
);
2095 static int soc_pcm_ioctl(struct snd_pcm_substream
*substream
,
2096 unsigned int cmd
, void *arg
)
2098 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
2099 struct snd_soc_platform
*platform
= rtd
->platform
;
2101 if (platform
->driver
->ops
&& platform
->driver
->ops
->ioctl
)
2102 return platform
->driver
->ops
->ioctl(substream
, cmd
, arg
);
2103 return snd_pcm_lib_ioctl(substream
, cmd
, arg
);
2106 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
2108 struct snd_pcm_substream
*substream
=
2109 snd_soc_dpcm_get_substream(fe
, stream
);
2110 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
2113 dev_dbg(fe
->dev
, "ASoC: runtime %s close on FE %s\n",
2114 stream
? "capture" : "playback", fe
->dai_link
->name
);
2116 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
2117 /* call bespoke trigger - FE takes care of all BE triggers */
2118 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd stop\n",
2119 fe
->dai_link
->name
);
2121 err
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_STOP
);
2123 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
2125 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd stop\n",
2126 fe
->dai_link
->name
);
2128 err
= dpcm_be_dai_trigger(fe
, stream
, SNDRV_PCM_TRIGGER_STOP
);
2130 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
2133 err
= dpcm_be_dai_hw_free(fe
, stream
);
2135 dev_err(fe
->dev
,"ASoC: hw_free FE failed %d\n", err
);
2137 err
= dpcm_be_dai_shutdown(fe
, stream
);
2139 dev_err(fe
->dev
,"ASoC: shutdown FE failed %d\n", err
);
2141 /* run the stream event for each BE */
2142 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
2147 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
2149 struct snd_pcm_substream
*substream
=
2150 snd_soc_dpcm_get_substream(fe
, stream
);
2151 struct snd_soc_dpcm
*dpcm
;
2152 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
2155 dev_dbg(fe
->dev
, "ASoC: runtime %s open on FE %s\n",
2156 stream
? "capture" : "playback", fe
->dai_link
->name
);
2158 /* Only start the BE if the FE is ready */
2159 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_FREE
||
2160 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_CLOSE
)
2163 /* startup must always be called for new BEs */
2164 ret
= dpcm_be_dai_startup(fe
, stream
);
2168 /* keep going if FE state is > open */
2169 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_OPEN
)
2172 ret
= dpcm_be_dai_hw_params(fe
, stream
);
2176 /* keep going if FE state is > hw_params */
2177 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_PARAMS
)
2181 ret
= dpcm_be_dai_prepare(fe
, stream
);
2185 /* run the stream event for each BE */
2186 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
2188 /* keep going if FE state is > prepare */
2189 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_PREPARE
||
2190 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_STOP
)
2193 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
2194 /* call trigger on the frontend - FE takes care of all BE triggers */
2195 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd start\n",
2196 fe
->dai_link
->name
);
2198 ret
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_START
);
2200 dev_err(fe
->dev
,"ASoC: bespoke trigger FE failed %d\n", ret
);
2204 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd start\n",
2205 fe
->dai_link
->name
);
2207 ret
= dpcm_be_dai_trigger(fe
, stream
,
2208 SNDRV_PCM_TRIGGER_START
);
2210 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
2218 dpcm_be_dai_hw_free(fe
, stream
);
2220 dpcm_be_dai_shutdown(fe
, stream
);
2222 /* disconnect any non started BEs */
2223 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2224 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2225 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
2226 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2232 static int dpcm_run_new_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2236 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_BE
);
2237 ret
= dpcm_run_update_startup(fe
, stream
);
2239 dev_err(fe
->dev
, "ASoC: failed to startup some BEs\n");
2240 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2245 static int dpcm_run_old_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2249 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_BE
);
2250 ret
= dpcm_run_update_shutdown(fe
, stream
);
2252 dev_err(fe
->dev
, "ASoC: failed to shutdown some BEs\n");
2253 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2258 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2261 int soc_dpcm_runtime_update(struct snd_soc_card
*card
)
2263 int i
, old
, new, paths
;
2265 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2266 for (i
= 0; i
< card
->num_rtd
; i
++) {
2267 struct snd_soc_dapm_widget_list
*list
;
2268 struct snd_soc_pcm_runtime
*fe
= &card
->rtd
[i
];
2270 /* make sure link is FE */
2271 if (!fe
->dai_link
->dynamic
)
2274 /* only check active links */
2275 if (!fe
->cpu_dai
->active
)
2278 /* DAPM sync will call this to update DSP paths */
2279 dev_dbg(fe
->dev
, "ASoC: DPCM runtime update for FE %s\n",
2280 fe
->dai_link
->name
);
2282 /* skip if FE doesn't have playback capability */
2283 if (!fe
->cpu_dai
->driver
->playback
.channels_min
2284 || !fe
->codec_dai
->driver
->playback
.channels_min
)
2287 /* skip if FE isn't currently playing */
2288 if (!fe
->cpu_dai
->playback_active
2289 || !fe
->codec_dai
->playback_active
)
2292 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
);
2294 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
2295 fe
->dai_link
->name
, "playback");
2296 mutex_unlock(&card
->mutex
);
2300 /* update any new playback paths */
2301 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 1);
2303 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2304 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2305 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2308 /* update any old playback paths */
2309 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 0);
2311 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2312 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2313 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2316 dpcm_path_put(&list
);
2318 /* skip if FE doesn't have capture capability */
2319 if (!fe
->cpu_dai
->driver
->capture
.channels_min
2320 || !fe
->codec_dai
->driver
->capture
.channels_min
)
2323 /* skip if FE isn't currently capturing */
2324 if (!fe
->cpu_dai
->capture_active
2325 || !fe
->codec_dai
->capture_active
)
2328 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
);
2330 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
2331 fe
->dai_link
->name
, "capture");
2332 mutex_unlock(&card
->mutex
);
2336 /* update any new capture paths */
2337 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 1);
2339 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2340 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2341 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2344 /* update any old capture paths */
2345 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 0);
2347 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2348 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2349 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2352 dpcm_path_put(&list
);
2355 mutex_unlock(&card
->mutex
);
2358 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime
*fe
, int mute
)
2360 struct snd_soc_dpcm
*dpcm
;
2361 struct list_head
*clients
=
2362 &fe
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
;
2364 list_for_each_entry(dpcm
, clients
, list_be
) {
2366 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2369 if (be
->dai_link
->ignore_suspend
)
2372 for (i
= 0; i
< be
->num_codecs
; i
++) {
2373 struct snd_soc_dai
*dai
= be
->codec_dais
[i
];
2374 struct snd_soc_dai_driver
*drv
= dai
->driver
;
2376 dev_dbg(be
->dev
, "ASoC: BE digital mute %s\n",
2377 be
->dai_link
->name
);
2379 if (drv
->ops
&& drv
->ops
->digital_mute
&&
2380 dai
->playback_active
)
2381 drv
->ops
->digital_mute(dai
, mute
);
2388 static int dpcm_fe_dai_open(struct snd_pcm_substream
*fe_substream
)
2390 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
2391 struct snd_soc_dpcm
*dpcm
;
2392 struct snd_soc_dapm_widget_list
*list
;
2394 int stream
= fe_substream
->stream
;
2396 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2397 fe
->dpcm
[stream
].runtime
= fe_substream
->runtime
;
2399 ret
= dpcm_path_get(fe
, stream
, &list
);
2401 mutex_unlock(&fe
->card
->mutex
);
2403 } else if (ret
== 0) {
2404 dev_dbg(fe
->dev
, "ASoC: %s no valid %s route\n",
2405 fe
->dai_link
->name
, stream
? "capture" : "playback");
2408 /* calculate valid and active FE <-> BE dpcms */
2409 dpcm_process_paths(fe
, stream
, &list
, 1);
2411 ret
= dpcm_fe_dai_startup(fe_substream
);
2413 /* clean up all links */
2414 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
2415 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2417 dpcm_be_disconnect(fe
, stream
);
2418 fe
->dpcm
[stream
].runtime
= NULL
;
2421 dpcm_clear_pending_state(fe
, stream
);
2422 dpcm_path_put(&list
);
2423 mutex_unlock(&fe
->card
->mutex
);
2427 static int dpcm_fe_dai_close(struct snd_pcm_substream
*fe_substream
)
2429 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
2430 struct snd_soc_dpcm
*dpcm
;
2431 int stream
= fe_substream
->stream
, ret
;
2433 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2434 ret
= dpcm_fe_dai_shutdown(fe_substream
);
2436 /* mark FE's links ready to prune */
2437 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
2438 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2440 dpcm_be_disconnect(fe
, stream
);
2442 fe
->dpcm
[stream
].runtime
= NULL
;
2443 mutex_unlock(&fe
->card
->mutex
);
2447 /* create a new pcm */
2448 int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2450 struct snd_soc_platform
*platform
= rtd
->platform
;
2451 struct snd_soc_dai
*codec_dai
;
2452 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2453 struct snd_pcm
*pcm
;
2455 int ret
= 0, playback
= 0, capture
= 0;
2458 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
) {
2459 playback
= rtd
->dai_link
->dpcm_playback
;
2460 capture
= rtd
->dai_link
->dpcm_capture
;
2462 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2463 codec_dai
= rtd
->codec_dais
[i
];
2464 if (codec_dai
->driver
->playback
.channels_min
)
2466 if (codec_dai
->driver
->capture
.channels_min
)
2470 capture
= capture
&& cpu_dai
->driver
->capture
.channels_min
;
2471 playback
= playback
&& cpu_dai
->driver
->playback
.channels_min
;
2474 if (rtd
->dai_link
->playback_only
) {
2479 if (rtd
->dai_link
->capture_only
) {
2484 /* create the PCM */
2485 if (rtd
->dai_link
->no_pcm
) {
2486 snprintf(new_name
, sizeof(new_name
), "(%s)",
2487 rtd
->dai_link
->stream_name
);
2489 ret
= snd_pcm_new_internal(rtd
->card
->snd_card
, new_name
, num
,
2490 playback
, capture
, &pcm
);
2492 if (rtd
->dai_link
->dynamic
)
2493 snprintf(new_name
, sizeof(new_name
), "%s (*)",
2494 rtd
->dai_link
->stream_name
);
2496 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2497 rtd
->dai_link
->stream_name
,
2498 (rtd
->num_codecs
> 1) ?
2499 "multicodec" : rtd
->codec_dai
->name
, num
);
2501 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
, num
, playback
,
2505 dev_err(rtd
->card
->dev
, "ASoC: can't create pcm for %s\n",
2506 rtd
->dai_link
->name
);
2509 dev_dbg(rtd
->card
->dev
, "ASoC: registered pcm #%d %s\n",num
, new_name
);
2511 /* DAPM dai link stream work */
2512 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
2515 pcm
->private_data
= rtd
;
2517 if (rtd
->dai_link
->no_pcm
) {
2519 pcm
->streams
[SNDRV_PCM_STREAM_PLAYBACK
].substream
->private_data
= rtd
;
2521 pcm
->streams
[SNDRV_PCM_STREAM_CAPTURE
].substream
->private_data
= rtd
;
2525 /* ASoC PCM operations */
2526 if (rtd
->dai_link
->dynamic
) {
2527 rtd
->ops
.open
= dpcm_fe_dai_open
;
2528 rtd
->ops
.hw_params
= dpcm_fe_dai_hw_params
;
2529 rtd
->ops
.prepare
= dpcm_fe_dai_prepare
;
2530 rtd
->ops
.trigger
= dpcm_fe_dai_trigger
;
2531 rtd
->ops
.hw_free
= dpcm_fe_dai_hw_free
;
2532 rtd
->ops
.close
= dpcm_fe_dai_close
;
2533 rtd
->ops
.pointer
= soc_pcm_pointer
;
2534 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2536 rtd
->ops
.open
= soc_pcm_open
;
2537 rtd
->ops
.hw_params
= soc_pcm_hw_params
;
2538 rtd
->ops
.prepare
= soc_pcm_prepare
;
2539 rtd
->ops
.trigger
= soc_pcm_trigger
;
2540 rtd
->ops
.hw_free
= soc_pcm_hw_free
;
2541 rtd
->ops
.close
= soc_pcm_close
;
2542 rtd
->ops
.pointer
= soc_pcm_pointer
;
2543 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2546 if (platform
->driver
->ops
) {
2547 rtd
->ops
.ack
= platform
->driver
->ops
->ack
;
2548 rtd
->ops
.copy
= platform
->driver
->ops
->copy
;
2549 rtd
->ops
.silence
= platform
->driver
->ops
->silence
;
2550 rtd
->ops
.page
= platform
->driver
->ops
->page
;
2551 rtd
->ops
.mmap
= platform
->driver
->ops
->mmap
;
2555 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &rtd
->ops
);
2558 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &rtd
->ops
);
2560 if (platform
->driver
->pcm_new
) {
2561 ret
= platform
->driver
->pcm_new(rtd
);
2563 dev_err(platform
->dev
,
2564 "ASoC: pcm constructor failed: %d\n",
2570 pcm
->private_free
= platform
->driver
->pcm_free
;
2572 dev_info(rtd
->card
->dev
, "%s <-> %s mapping ok\n",
2573 (rtd
->num_codecs
> 1) ? "multicodec" : rtd
->codec_dai
->name
,
2578 /* is the current PCM operation for this FE ? */
2579 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2581 if (fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
)
2585 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update
);
2587 /* is the current PCM operation for this BE ? */
2588 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime
*fe
,
2589 struct snd_soc_pcm_runtime
*be
, int stream
)
2591 if ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
) ||
2592 ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_BE
) &&
2593 be
->dpcm
[stream
].runtime_update
))
2597 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update
);
2599 /* get the substream for this BE */
2600 struct snd_pcm_substream
*
2601 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime
*be
, int stream
)
2603 return be
->pcm
->streams
[stream
].substream
;
2605 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream
);
2607 /* get the BE runtime state */
2608 enum snd_soc_dpcm_state
2609 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime
*be
, int stream
)
2611 return be
->dpcm
[stream
].state
;
2613 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state
);
2615 /* set the BE runtime state */
2616 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime
*be
,
2617 int stream
, enum snd_soc_dpcm_state state
)
2619 be
->dpcm
[stream
].state
= state
;
2621 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state
);
2624 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
2625 * are not running, paused or suspended for the specified stream direction.
2627 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime
*fe
,
2628 struct snd_soc_pcm_runtime
*be
, int stream
)
2630 struct snd_soc_dpcm
*dpcm
;
2633 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2638 state
= dpcm
->fe
->dpcm
[stream
].state
;
2639 if (state
== SND_SOC_DPCM_STATE_START
||
2640 state
== SND_SOC_DPCM_STATE_PAUSED
||
2641 state
== SND_SOC_DPCM_STATE_SUSPEND
)
2645 /* it's safe to free/stop this BE DAI */
2648 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop
);
2651 * We can only change hw params a BE DAI if any of it's FE are not prepared,
2652 * running, paused or suspended for the specified stream direction.
2654 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime
*fe
,
2655 struct snd_soc_pcm_runtime
*be
, int stream
)
2657 struct snd_soc_dpcm
*dpcm
;
2660 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2665 state
= dpcm
->fe
->dpcm
[stream
].state
;
2666 if (state
== SND_SOC_DPCM_STATE_START
||
2667 state
== SND_SOC_DPCM_STATE_PAUSED
||
2668 state
== SND_SOC_DPCM_STATE_SUSPEND
||
2669 state
== SND_SOC_DPCM_STATE_PREPARE
)
2673 /* it's safe to change hw_params */
2676 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params
);
2678 int snd_soc_platform_trigger(struct snd_pcm_substream
*substream
,
2679 int cmd
, struct snd_soc_platform
*platform
)
2681 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
)
2682 return platform
->driver
->ops
->trigger(substream
, cmd
);
2685 EXPORT_SYMBOL_GPL(snd_soc_platform_trigger
);
2687 #ifdef CONFIG_DEBUG_FS
2688 static char *dpcm_state_string(enum snd_soc_dpcm_state state
)
2691 case SND_SOC_DPCM_STATE_NEW
:
2693 case SND_SOC_DPCM_STATE_OPEN
:
2695 case SND_SOC_DPCM_STATE_HW_PARAMS
:
2697 case SND_SOC_DPCM_STATE_PREPARE
:
2699 case SND_SOC_DPCM_STATE_START
:
2701 case SND_SOC_DPCM_STATE_STOP
:
2703 case SND_SOC_DPCM_STATE_SUSPEND
:
2705 case SND_SOC_DPCM_STATE_PAUSED
:
2707 case SND_SOC_DPCM_STATE_HW_FREE
:
2709 case SND_SOC_DPCM_STATE_CLOSE
:
2716 static ssize_t
dpcm_show_state(struct snd_soc_pcm_runtime
*fe
,
2717 int stream
, char *buf
, size_t size
)
2719 struct snd_pcm_hw_params
*params
= &fe
->dpcm
[stream
].hw_params
;
2720 struct snd_soc_dpcm
*dpcm
;
2724 offset
+= snprintf(buf
+ offset
, size
- offset
,
2725 "[%s - %s]\n", fe
->dai_link
->name
,
2726 stream
? "Capture" : "Playback");
2728 offset
+= snprintf(buf
+ offset
, size
- offset
, "State: %s\n",
2729 dpcm_state_string(fe
->dpcm
[stream
].state
));
2731 if ((fe
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2732 (fe
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2733 offset
+= snprintf(buf
+ offset
, size
- offset
,
2735 "Format = %s, Channels = %d, Rate = %d\n",
2736 snd_pcm_format_name(params_format(params
)),
2737 params_channels(params
),
2738 params_rate(params
));
2741 offset
+= snprintf(buf
+ offset
, size
- offset
, "Backends:\n");
2743 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
2744 offset
+= snprintf(buf
+ offset
, size
- offset
,
2745 " No active DSP links\n");
2749 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2750 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2751 params
= &dpcm
->hw_params
;
2753 offset
+= snprintf(buf
+ offset
, size
- offset
,
2754 "- %s\n", be
->dai_link
->name
);
2756 offset
+= snprintf(buf
+ offset
, size
- offset
,
2758 dpcm_state_string(be
->dpcm
[stream
].state
));
2760 if ((be
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2761 (be
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2762 offset
+= snprintf(buf
+ offset
, size
- offset
,
2763 " Hardware Params: "
2764 "Format = %s, Channels = %d, Rate = %d\n",
2765 snd_pcm_format_name(params_format(params
)),
2766 params_channels(params
),
2767 params_rate(params
));
2774 static ssize_t
dpcm_state_read_file(struct file
*file
, char __user
*user_buf
,
2775 size_t count
, loff_t
*ppos
)
2777 struct snd_soc_pcm_runtime
*fe
= file
->private_data
;
2778 ssize_t out_count
= PAGE_SIZE
, offset
= 0, ret
= 0;
2781 buf
= kmalloc(out_count
, GFP_KERNEL
);
2785 if (fe
->cpu_dai
->driver
->playback
.channels_min
)
2786 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
,
2787 buf
+ offset
, out_count
- offset
);
2789 if (fe
->cpu_dai
->driver
->capture
.channels_min
)
2790 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_CAPTURE
,
2791 buf
+ offset
, out_count
- offset
);
2793 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, offset
);
2799 static const struct file_operations dpcm_state_fops
= {
2800 .open
= simple_open
,
2801 .read
= dpcm_state_read_file
,
2802 .llseek
= default_llseek
,
2805 int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime
*rtd
)
2810 rtd
->debugfs_dpcm_root
= debugfs_create_dir(rtd
->dai_link
->name
,
2811 rtd
->card
->debugfs_card_root
);
2812 if (!rtd
->debugfs_dpcm_root
) {
2814 "ASoC: Failed to create dpcm debugfs directory %s\n",
2815 rtd
->dai_link
->name
);
2819 rtd
->debugfs_dpcm_state
= debugfs_create_file("state", 0444,
2820 rtd
->debugfs_dpcm_root
,
2821 rtd
, &dpcm_state_fops
);