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_dai_stream_valid() - check if a DAI supports the given stream
40 * Returns true if the DAI supports the indicated stream type.
42 static bool snd_soc_dai_stream_valid(struct snd_soc_dai
*dai
, int stream
)
44 struct snd_soc_pcm_stream
*codec_stream
;
46 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
47 codec_stream
= &dai
->driver
->playback
;
49 codec_stream
= &dai
->driver
->capture
;
51 /* If the codec specifies any rate at all, it supports the stream. */
52 return codec_stream
->rates
;
56 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
57 * @rtd: ASoC PCM runtime that is activated
58 * @stream: Direction of the PCM stream
60 * Increments the active count for all the DAIs and components attached to a PCM
61 * runtime. Should typically be called when a stream is opened.
63 * Must be called with the rtd->pcm_mutex being held
65 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime
*rtd
, int stream
)
67 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
70 lockdep_assert_held(&rtd
->pcm_mutex
);
72 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
73 cpu_dai
->playback_active
++;
74 for (i
= 0; i
< rtd
->num_codecs
; i
++)
75 rtd
->codec_dais
[i
]->playback_active
++;
77 cpu_dai
->capture_active
++;
78 for (i
= 0; i
< rtd
->num_codecs
; i
++)
79 rtd
->codec_dais
[i
]->capture_active
++;
83 cpu_dai
->component
->active
++;
84 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
85 rtd
->codec_dais
[i
]->active
++;
86 rtd
->codec_dais
[i
]->component
->active
++;
91 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
92 * @rtd: ASoC PCM runtime that is deactivated
93 * @stream: Direction of the PCM stream
95 * Decrements the active count for all the DAIs and components attached to a PCM
96 * runtime. Should typically be called when a stream is closed.
98 * Must be called with the rtd->pcm_mutex being held
100 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime
*rtd
, int stream
)
102 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
105 lockdep_assert_held(&rtd
->pcm_mutex
);
107 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
108 cpu_dai
->playback_active
--;
109 for (i
= 0; i
< rtd
->num_codecs
; i
++)
110 rtd
->codec_dais
[i
]->playback_active
--;
112 cpu_dai
->capture_active
--;
113 for (i
= 0; i
< rtd
->num_codecs
; i
++)
114 rtd
->codec_dais
[i
]->capture_active
--;
118 cpu_dai
->component
->active
--;
119 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
120 rtd
->codec_dais
[i
]->component
->active
--;
121 rtd
->codec_dais
[i
]->active
--;
126 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
127 * @rtd: The ASoC PCM runtime that should be checked.
129 * This function checks whether the power down delay should be ignored for a
130 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
131 * been configured to ignore the delay, or if none of the components benefits
132 * from having the delay.
134 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime
*rtd
)
139 if (!rtd
->pmdown_time
|| rtd
->dai_link
->ignore_pmdown_time
)
142 for (i
= 0; i
< rtd
->num_codecs
; i
++)
143 ignore
&= rtd
->codec_dais
[i
]->component
->ignore_pmdown_time
;
145 return rtd
->cpu_dai
->component
->ignore_pmdown_time
&& ignore
;
149 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
150 * @substream: the pcm substream
151 * @hw: the hardware parameters
153 * Sets the substream runtime hardware parameters.
155 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
156 const struct snd_pcm_hardware
*hw
)
158 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
159 runtime
->hw
.info
= hw
->info
;
160 runtime
->hw
.formats
= hw
->formats
;
161 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
162 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
163 runtime
->hw
.periods_min
= hw
->periods_min
;
164 runtime
->hw
.periods_max
= hw
->periods_max
;
165 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
166 runtime
->hw
.fifo_size
= hw
->fifo_size
;
169 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
171 /* DPCM stream event, send event to FE and all active BEs. */
172 int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime
*fe
, int dir
,
175 struct snd_soc_dpcm
*dpcm
;
177 list_for_each_entry(dpcm
, &fe
->dpcm
[dir
].be_clients
, list_be
) {
179 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
181 dev_dbg(be
->dev
, "ASoC: BE %s event %d dir %d\n",
182 be
->dai_link
->name
, event
, dir
);
184 snd_soc_dapm_stream_event(be
, dir
, event
);
187 snd_soc_dapm_stream_event(fe
, dir
, event
);
192 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
,
193 struct snd_soc_dai
*soc_dai
)
195 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
198 if (soc_dai
->rate
&& (soc_dai
->driver
->symmetric_rates
||
199 rtd
->dai_link
->symmetric_rates
)) {
200 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %dHz rate\n",
203 ret
= snd_pcm_hw_constraint_single(substream
->runtime
,
204 SNDRV_PCM_HW_PARAM_RATE
,
207 dev_err(soc_dai
->dev
,
208 "ASoC: Unable to apply rate constraint: %d\n",
214 if (soc_dai
->channels
&& (soc_dai
->driver
->symmetric_channels
||
215 rtd
->dai_link
->symmetric_channels
)) {
216 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %d channel(s)\n",
219 ret
= snd_pcm_hw_constraint_single(substream
->runtime
,
220 SNDRV_PCM_HW_PARAM_CHANNELS
,
223 dev_err(soc_dai
->dev
,
224 "ASoC: Unable to apply channel symmetry constraint: %d\n",
230 if (soc_dai
->sample_bits
&& (soc_dai
->driver
->symmetric_samplebits
||
231 rtd
->dai_link
->symmetric_samplebits
)) {
232 dev_dbg(soc_dai
->dev
, "ASoC: Symmetry forces %d sample bits\n",
233 soc_dai
->sample_bits
);
235 ret
= snd_pcm_hw_constraint_single(substream
->runtime
,
236 SNDRV_PCM_HW_PARAM_SAMPLE_BITS
,
237 soc_dai
->sample_bits
);
239 dev_err(soc_dai
->dev
,
240 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
249 static int soc_pcm_params_symmetry(struct snd_pcm_substream
*substream
,
250 struct snd_pcm_hw_params
*params
)
252 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
253 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
254 unsigned int rate
, channels
, sample_bits
, symmetry
, i
;
256 rate
= params_rate(params
);
257 channels
= params_channels(params
);
258 sample_bits
= snd_pcm_format_physical_width(params_format(params
));
260 /* reject unmatched parameters when applying symmetry */
261 symmetry
= cpu_dai
->driver
->symmetric_rates
||
262 rtd
->dai_link
->symmetric_rates
;
264 for (i
= 0; i
< rtd
->num_codecs
; i
++)
265 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_rates
;
267 if (symmetry
&& cpu_dai
->rate
&& cpu_dai
->rate
!= rate
) {
268 dev_err(rtd
->dev
, "ASoC: unmatched rate symmetry: %d - %d\n",
269 cpu_dai
->rate
, rate
);
273 symmetry
= cpu_dai
->driver
->symmetric_channels
||
274 rtd
->dai_link
->symmetric_channels
;
276 for (i
= 0; i
< rtd
->num_codecs
; i
++)
277 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_channels
;
279 if (symmetry
&& cpu_dai
->channels
&& cpu_dai
->channels
!= channels
) {
280 dev_err(rtd
->dev
, "ASoC: unmatched channel symmetry: %d - %d\n",
281 cpu_dai
->channels
, channels
);
285 symmetry
= cpu_dai
->driver
->symmetric_samplebits
||
286 rtd
->dai_link
->symmetric_samplebits
;
288 for (i
= 0; i
< rtd
->num_codecs
; i
++)
289 symmetry
|= rtd
->codec_dais
[i
]->driver
->symmetric_samplebits
;
291 if (symmetry
&& cpu_dai
->sample_bits
&& cpu_dai
->sample_bits
!= sample_bits
) {
292 dev_err(rtd
->dev
, "ASoC: unmatched sample bits symmetry: %d - %d\n",
293 cpu_dai
->sample_bits
, sample_bits
);
300 static bool soc_pcm_has_symmetry(struct snd_pcm_substream
*substream
)
302 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
303 struct snd_soc_dai_driver
*cpu_driver
= rtd
->cpu_dai
->driver
;
304 struct snd_soc_dai_link
*link
= rtd
->dai_link
;
305 unsigned int symmetry
, i
;
307 symmetry
= cpu_driver
->symmetric_rates
|| link
->symmetric_rates
||
308 cpu_driver
->symmetric_channels
|| link
->symmetric_channels
||
309 cpu_driver
->symmetric_samplebits
|| link
->symmetric_samplebits
;
311 for (i
= 0; i
< rtd
->num_codecs
; i
++)
312 symmetry
= symmetry
||
313 rtd
->codec_dais
[i
]->driver
->symmetric_rates
||
314 rtd
->codec_dais
[i
]->driver
->symmetric_channels
||
315 rtd
->codec_dais
[i
]->driver
->symmetric_samplebits
;
320 static void soc_pcm_set_msb(struct snd_pcm_substream
*substream
, int bits
)
322 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
328 ret
= snd_pcm_hw_constraint_msbits(substream
->runtime
, 0, 0, bits
);
330 dev_warn(rtd
->dev
, "ASoC: Failed to set MSB %d: %d\n",
334 static void soc_pcm_apply_msb(struct snd_pcm_substream
*substream
)
336 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
337 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
338 struct snd_soc_dai
*codec_dai
;
340 unsigned int bits
= 0, cpu_bits
;
342 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
343 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
344 codec_dai
= rtd
->codec_dais
[i
];
345 if (codec_dai
->driver
->playback
.sig_bits
== 0) {
349 bits
= max(codec_dai
->driver
->playback
.sig_bits
, bits
);
351 cpu_bits
= cpu_dai
->driver
->playback
.sig_bits
;
353 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
354 codec_dai
= rtd
->codec_dais
[i
];
355 if (codec_dai
->driver
->capture
.sig_bits
== 0) {
359 bits
= max(codec_dai
->driver
->capture
.sig_bits
, bits
);
361 cpu_bits
= cpu_dai
->driver
->capture
.sig_bits
;
364 soc_pcm_set_msb(substream
, bits
);
365 soc_pcm_set_msb(substream
, cpu_bits
);
368 static void soc_pcm_init_runtime_hw(struct snd_pcm_substream
*substream
)
370 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
371 struct snd_pcm_hardware
*hw
= &runtime
->hw
;
372 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
373 struct snd_soc_dai_driver
*cpu_dai_drv
= rtd
->cpu_dai
->driver
;
374 struct snd_soc_dai_driver
*codec_dai_drv
;
375 struct snd_soc_pcm_stream
*codec_stream
;
376 struct snd_soc_pcm_stream
*cpu_stream
;
377 unsigned int chan_min
= 0, chan_max
= UINT_MAX
;
378 unsigned int rate_min
= 0, rate_max
= UINT_MAX
;
379 unsigned int rates
= UINT_MAX
;
380 u64 formats
= ULLONG_MAX
;
383 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
384 cpu_stream
= &cpu_dai_drv
->playback
;
386 cpu_stream
= &cpu_dai_drv
->capture
;
388 /* first calculate min/max only for CODECs in the DAI link */
389 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
392 * Skip CODECs which don't support the current stream type.
393 * Otherwise, since the rate, channel, and format values will
394 * zero in that case, we would have no usable settings left,
395 * causing the resulting setup to fail.
396 * At least one CODEC should match, otherwise we should have
397 * bailed out on a higher level, since there would be no
398 * CODEC to support the transfer direction in that case.
400 if (!snd_soc_dai_stream_valid(rtd
->codec_dais
[i
],
404 codec_dai_drv
= rtd
->codec_dais
[i
]->driver
;
405 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
406 codec_stream
= &codec_dai_drv
->playback
;
408 codec_stream
= &codec_dai_drv
->capture
;
409 chan_min
= max(chan_min
, codec_stream
->channels_min
);
410 chan_max
= min(chan_max
, codec_stream
->channels_max
);
411 rate_min
= max(rate_min
, codec_stream
->rate_min
);
412 rate_max
= min_not_zero(rate_max
, codec_stream
->rate_max
);
413 formats
&= codec_stream
->formats
;
414 rates
= snd_pcm_rate_mask_intersect(codec_stream
->rates
, rates
);
418 * chan min/max cannot be enforced if there are multiple CODEC DAIs
419 * connected to a single CPU DAI, use CPU DAI's directly and let
420 * channel allocation be fixed up later
422 if (rtd
->num_codecs
> 1) {
423 chan_min
= cpu_stream
->channels_min
;
424 chan_max
= cpu_stream
->channels_max
;
427 hw
->channels_min
= max(chan_min
, cpu_stream
->channels_min
);
428 hw
->channels_max
= min(chan_max
, cpu_stream
->channels_max
);
430 hw
->formats
&= formats
& cpu_stream
->formats
;
432 hw
->formats
= formats
& cpu_stream
->formats
;
433 hw
->rates
= snd_pcm_rate_mask_intersect(rates
, cpu_stream
->rates
);
435 snd_pcm_limit_hw_rates(runtime
);
437 hw
->rate_min
= max(hw
->rate_min
, cpu_stream
->rate_min
);
438 hw
->rate_min
= max(hw
->rate_min
, rate_min
);
439 hw
->rate_max
= min_not_zero(hw
->rate_max
, cpu_stream
->rate_max
);
440 hw
->rate_max
= min_not_zero(hw
->rate_max
, rate_max
);
444 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
445 * then initialized and any private data can be allocated. This also calls
446 * startup for the cpu DAI, platform, machine and codec DAI.
448 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
450 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
451 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
452 struct snd_soc_platform
*platform
= rtd
->platform
;
453 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
454 struct snd_soc_dai
*codec_dai
;
455 const char *codec_dai_name
= "multicodec";
458 pinctrl_pm_select_default_state(cpu_dai
->dev
);
459 for (i
= 0; i
< rtd
->num_codecs
; i
++)
460 pinctrl_pm_select_default_state(rtd
->codec_dais
[i
]->dev
);
461 pm_runtime_get_sync(cpu_dai
->dev
);
462 for (i
= 0; i
< rtd
->num_codecs
; i
++)
463 pm_runtime_get_sync(rtd
->codec_dais
[i
]->dev
);
464 pm_runtime_get_sync(platform
->dev
);
466 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
468 /* startup the audio subsystem */
469 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->startup
) {
470 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
472 dev_err(cpu_dai
->dev
, "ASoC: can't open interface"
473 " %s: %d\n", cpu_dai
->name
, ret
);
478 if (platform
->driver
->ops
&& platform
->driver
->ops
->open
) {
479 ret
= platform
->driver
->ops
->open(substream
);
481 dev_err(platform
->dev
, "ASoC: can't open platform"
482 " %s: %d\n", platform
->component
.name
, ret
);
487 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
488 codec_dai
= rtd
->codec_dais
[i
];
489 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->startup
) {
490 ret
= codec_dai
->driver
->ops
->startup(substream
,
493 dev_err(codec_dai
->dev
,
494 "ASoC: can't open codec %s: %d\n",
495 codec_dai
->name
, ret
);
500 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
501 codec_dai
->tx_mask
= 0;
503 codec_dai
->rx_mask
= 0;
506 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
507 ret
= rtd
->dai_link
->ops
->startup(substream
);
509 pr_err("ASoC: %s startup failed: %d\n",
510 rtd
->dai_link
->name
, ret
);
515 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
516 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
)
519 /* Check that the codec and cpu DAIs are compatible */
520 soc_pcm_init_runtime_hw(substream
);
522 if (rtd
->num_codecs
== 1)
523 codec_dai_name
= rtd
->codec_dai
->name
;
525 if (soc_pcm_has_symmetry(substream
))
526 runtime
->hw
.info
|= SNDRV_PCM_INFO_JOINT_DUPLEX
;
529 if (!runtime
->hw
.rates
) {
530 printk(KERN_ERR
"ASoC: %s <-> %s No matching rates\n",
531 codec_dai_name
, cpu_dai
->name
);
534 if (!runtime
->hw
.formats
) {
535 printk(KERN_ERR
"ASoC: %s <-> %s No matching formats\n",
536 codec_dai_name
, cpu_dai
->name
);
539 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
||
540 runtime
->hw
.channels_min
> runtime
->hw
.channels_max
) {
541 printk(KERN_ERR
"ASoC: %s <-> %s No matching channels\n",
542 codec_dai_name
, cpu_dai
->name
);
546 soc_pcm_apply_msb(substream
);
548 /* Symmetry only applies if we've already got an active stream. */
549 if (cpu_dai
->active
) {
550 ret
= soc_pcm_apply_symmetry(substream
, cpu_dai
);
555 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
556 if (rtd
->codec_dais
[i
]->active
) {
557 ret
= soc_pcm_apply_symmetry(substream
,
564 pr_debug("ASoC: %s <-> %s info:\n",
565 codec_dai_name
, cpu_dai
->name
);
566 pr_debug("ASoC: rate mask 0x%x\n", runtime
->hw
.rates
);
567 pr_debug("ASoC: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
568 runtime
->hw
.channels_max
);
569 pr_debug("ASoC: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
570 runtime
->hw
.rate_max
);
574 snd_soc_runtime_activate(rtd
, substream
->stream
);
576 mutex_unlock(&rtd
->pcm_mutex
);
580 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
581 rtd
->dai_link
->ops
->shutdown(substream
);
588 codec_dai
= rtd
->codec_dais
[i
];
589 if (codec_dai
->driver
->ops
->shutdown
)
590 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
593 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
594 platform
->driver
->ops
->close(substream
);
597 if (cpu_dai
->driver
->ops
->shutdown
)
598 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
600 mutex_unlock(&rtd
->pcm_mutex
);
602 pm_runtime_mark_last_busy(platform
->dev
);
603 pm_runtime_put_autosuspend(platform
->dev
);
604 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
605 pm_runtime_mark_last_busy(rtd
->codec_dais
[i
]->dev
);
606 pm_runtime_put_autosuspend(rtd
->codec_dais
[i
]->dev
);
609 pm_runtime_mark_last_busy(cpu_dai
->dev
);
610 pm_runtime_put_autosuspend(cpu_dai
->dev
);
611 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
612 if (!rtd
->codec_dais
[i
]->active
)
613 pinctrl_pm_select_sleep_state(rtd
->codec_dais
[i
]->dev
);
615 if (!cpu_dai
->active
)
616 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
622 * Power down the audio subsystem pmdown_time msecs after close is called.
623 * This is to ensure there are no pops or clicks in between any music tracks
624 * due to DAPM power cycling.
626 static void close_delayed_work(struct work_struct
*work
)
628 struct snd_soc_pcm_runtime
*rtd
=
629 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
630 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[0];
632 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
634 dev_dbg(rtd
->dev
, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
635 codec_dai
->driver
->playback
.stream_name
,
636 codec_dai
->playback_active
? "active" : "inactive",
637 rtd
->pop_wait
? "yes" : "no");
639 /* are we waiting on this codec DAI stream */
640 if (rtd
->pop_wait
== 1) {
642 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_PLAYBACK
,
643 SND_SOC_DAPM_STREAM_STOP
);
646 mutex_unlock(&rtd
->pcm_mutex
);
650 * Called by ALSA when a PCM substream is closed. Private data can be
651 * freed here. The cpu DAI, codec DAI, machine and platform are also
654 static int soc_pcm_close(struct snd_pcm_substream
*substream
)
656 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
657 struct snd_soc_platform
*platform
= rtd
->platform
;
658 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
659 struct snd_soc_dai
*codec_dai
;
662 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
664 snd_soc_runtime_deactivate(rtd
, substream
->stream
);
666 /* clear the corresponding DAIs rate when inactive */
667 if (!cpu_dai
->active
)
670 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
671 codec_dai
= rtd
->codec_dais
[i
];
672 if (!codec_dai
->active
)
676 snd_soc_dai_digital_mute(cpu_dai
, 1, substream
->stream
);
678 if (cpu_dai
->driver
->ops
->shutdown
)
679 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
681 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
682 codec_dai
= rtd
->codec_dais
[i
];
683 if (codec_dai
->driver
->ops
->shutdown
)
684 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
687 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
688 rtd
->dai_link
->ops
->shutdown(substream
);
690 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
691 platform
->driver
->ops
->close(substream
);
693 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
694 if (snd_soc_runtime_ignore_pmdown_time(rtd
)) {
695 /* powered down playback stream now */
696 snd_soc_dapm_stream_event(rtd
,
697 SNDRV_PCM_STREAM_PLAYBACK
,
698 SND_SOC_DAPM_STREAM_STOP
);
700 /* start delayed pop wq here for playback streams */
702 queue_delayed_work(system_power_efficient_wq
,
704 msecs_to_jiffies(rtd
->pmdown_time
));
707 /* capture streams can be powered down now */
708 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_CAPTURE
,
709 SND_SOC_DAPM_STREAM_STOP
);
712 mutex_unlock(&rtd
->pcm_mutex
);
714 pm_runtime_mark_last_busy(platform
->dev
);
715 pm_runtime_put_autosuspend(platform
->dev
);
717 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
718 pm_runtime_mark_last_busy(rtd
->codec_dais
[i
]->dev
);
719 pm_runtime_put_autosuspend(rtd
->codec_dais
[i
]->dev
);
722 pm_runtime_mark_last_busy(cpu_dai
->dev
);
723 pm_runtime_put_autosuspend(cpu_dai
->dev
);
725 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
726 if (!rtd
->codec_dais
[i
]->active
)
727 pinctrl_pm_select_sleep_state(rtd
->codec_dais
[i
]->dev
);
729 if (!cpu_dai
->active
)
730 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
736 * Called by ALSA when the PCM substream is prepared, can set format, sample
737 * rate, etc. This function is non atomic and can be called multiple times,
738 * it can refer to the runtime info.
740 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
742 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
743 struct snd_soc_platform
*platform
= rtd
->platform
;
744 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
745 struct snd_soc_dai
*codec_dai
;
748 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
750 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
751 ret
= rtd
->dai_link
->ops
->prepare(substream
);
753 dev_err(rtd
->card
->dev
, "ASoC: machine prepare error:"
759 if (platform
->driver
->ops
&& platform
->driver
->ops
->prepare
) {
760 ret
= platform
->driver
->ops
->prepare(substream
);
762 dev_err(platform
->dev
, "ASoC: platform prepare error:"
768 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
769 codec_dai
= rtd
->codec_dais
[i
];
770 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->prepare
) {
771 ret
= codec_dai
->driver
->ops
->prepare(substream
,
774 dev_err(codec_dai
->dev
,
775 "ASoC: codec DAI prepare error: %d\n",
782 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->prepare
) {
783 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
785 dev_err(cpu_dai
->dev
,
786 "ASoC: cpu DAI prepare error: %d\n", ret
);
791 /* cancel any delayed stream shutdown that is pending */
792 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
795 cancel_delayed_work(&rtd
->delayed_work
);
798 snd_soc_dapm_stream_event(rtd
, substream
->stream
,
799 SND_SOC_DAPM_STREAM_START
);
801 for (i
= 0; i
< rtd
->num_codecs
; i
++)
802 snd_soc_dai_digital_mute(rtd
->codec_dais
[i
], 0,
804 snd_soc_dai_digital_mute(cpu_dai
, 0, substream
->stream
);
807 mutex_unlock(&rtd
->pcm_mutex
);
811 static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params
*params
,
814 struct snd_interval
*interval
;
815 int channels
= hweight_long(mask
);
817 interval
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
818 interval
->min
= channels
;
819 interval
->max
= channels
;
822 int soc_dai_hw_params(struct snd_pcm_substream
*substream
,
823 struct snd_pcm_hw_params
*params
,
824 struct snd_soc_dai
*dai
)
828 if (dai
->driver
->ops
&& dai
->driver
->ops
->hw_params
) {
829 ret
= dai
->driver
->ops
->hw_params(substream
, params
, dai
);
831 dev_err(dai
->dev
, "ASoC: can't set %s hw params: %d\n",
841 * Called by ALSA when the hardware params are set by application. This
842 * function can also be called multiple times and can allocate buffers
843 * (using snd_pcm_lib_* ). It's non-atomic.
845 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
846 struct snd_pcm_hw_params
*params
)
848 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
849 struct snd_soc_platform
*platform
= rtd
->platform
;
850 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
853 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
855 ret
= soc_pcm_params_symmetry(substream
, params
);
859 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
860 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
862 dev_err(rtd
->card
->dev
, "ASoC: machine hw_params"
863 " failed: %d\n", ret
);
868 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
869 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
870 struct snd_pcm_hw_params codec_params
;
873 * Skip CODECs which don't support the current stream type,
874 * the idea being that if a CODEC is not used for the currently
875 * set up transfer direction, it should not need to be
876 * configured, especially since the configuration used might
877 * not even be supported by that CODEC. There may be cases
878 * however where a CODEC needs to be set up although it is
879 * actually not being used for the transfer, e.g. if a
880 * capture-only CODEC is acting as an LRCLK and/or BCLK master
881 * for the DAI link including a playback-only CODEC.
882 * If this becomes necessary, we will have to augment the
883 * machine driver setup with information on how to act, so
884 * we can do the right thing here.
886 if (!snd_soc_dai_stream_valid(codec_dai
, substream
->stream
))
889 /* copy params for each codec */
890 codec_params
= *params
;
892 /* fixup params based on TDM slot masks */
893 if (codec_dai
->tx_mask
)
894 soc_pcm_codec_params_fixup(&codec_params
,
896 if (codec_dai
->rx_mask
)
897 soc_pcm_codec_params_fixup(&codec_params
,
900 ret
= soc_dai_hw_params(substream
, &codec_params
, codec_dai
);
904 codec_dai
->rate
= params_rate(&codec_params
);
905 codec_dai
->channels
= params_channels(&codec_params
);
906 codec_dai
->sample_bits
= snd_pcm_format_physical_width(
907 params_format(&codec_params
));
910 ret
= soc_dai_hw_params(substream
, params
, cpu_dai
);
914 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_params
) {
915 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
917 dev_err(platform
->dev
, "ASoC: %s hw params failed: %d\n",
918 platform
->component
.name
, ret
);
923 /* store the parameters for each DAIs */
924 cpu_dai
->rate
= params_rate(params
);
925 cpu_dai
->channels
= params_channels(params
);
926 cpu_dai
->sample_bits
=
927 snd_pcm_format_physical_width(params_format(params
));
930 mutex_unlock(&rtd
->pcm_mutex
);
934 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->hw_free
)
935 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
942 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
943 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->hw_free
)
944 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
948 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
949 rtd
->dai_link
->ops
->hw_free(substream
);
951 mutex_unlock(&rtd
->pcm_mutex
);
956 * Frees resources allocated by hw_params, can be called multiple times
958 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
960 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
961 struct snd_soc_platform
*platform
= rtd
->platform
;
962 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
963 struct snd_soc_dai
*codec_dai
;
964 bool playback
= substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
;
967 mutex_lock_nested(&rtd
->pcm_mutex
, rtd
->pcm_subclass
);
969 /* clear the corresponding DAIs parameters when going to be inactive */
970 if (cpu_dai
->active
== 1) {
972 cpu_dai
->channels
= 0;
973 cpu_dai
->sample_bits
= 0;
976 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
977 codec_dai
= rtd
->codec_dais
[i
];
978 if (codec_dai
->active
== 1) {
980 codec_dai
->channels
= 0;
981 codec_dai
->sample_bits
= 0;
985 /* apply codec digital mute */
986 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
987 if ((playback
&& rtd
->codec_dais
[i
]->playback_active
== 1) ||
988 (!playback
&& rtd
->codec_dais
[i
]->capture_active
== 1))
989 snd_soc_dai_digital_mute(rtd
->codec_dais
[i
], 1,
993 /* free any machine hw params */
994 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
995 rtd
->dai_link
->ops
->hw_free(substream
);
997 /* free any DMA resources */
998 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_free
)
999 platform
->driver
->ops
->hw_free(substream
);
1001 /* now free hw params for the DAIs */
1002 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1003 codec_dai
= rtd
->codec_dais
[i
];
1004 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->hw_free
)
1005 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
1008 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->hw_free
)
1009 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
1011 mutex_unlock(&rtd
->pcm_mutex
);
1015 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
1017 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1018 struct snd_soc_platform
*platform
= rtd
->platform
;
1019 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1020 struct snd_soc_dai
*codec_dai
;
1023 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1024 codec_dai
= rtd
->codec_dais
[i
];
1025 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->trigger
) {
1026 ret
= codec_dai
->driver
->ops
->trigger(substream
,
1033 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
) {
1034 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
1039 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->trigger
) {
1040 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
1045 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->trigger
) {
1046 ret
= rtd
->dai_link
->ops
->trigger(substream
, cmd
);
1054 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream
*substream
,
1057 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1058 struct snd_soc_platform
*platform
= rtd
->platform
;
1059 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1060 struct snd_soc_dai
*codec_dai
;
1063 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1064 codec_dai
= rtd
->codec_dais
[i
];
1065 if (codec_dai
->driver
->ops
&&
1066 codec_dai
->driver
->ops
->bespoke_trigger
) {
1067 ret
= codec_dai
->driver
->ops
->bespoke_trigger(substream
,
1074 if (platform
->driver
->bespoke_trigger
) {
1075 ret
= platform
->driver
->bespoke_trigger(substream
, cmd
);
1080 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->bespoke_trigger
) {
1081 ret
= cpu_dai
->driver
->ops
->bespoke_trigger(substream
, cmd
, cpu_dai
);
1088 * soc level wrapper for pointer callback
1089 * If cpu_dai, codec_dai, platform driver has the delay callback, than
1090 * the runtime->delay will be updated accordingly.
1092 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
1094 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1095 struct snd_soc_platform
*platform
= rtd
->platform
;
1096 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1097 struct snd_soc_dai
*codec_dai
;
1098 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1099 snd_pcm_uframes_t offset
= 0;
1100 snd_pcm_sframes_t delay
= 0;
1101 snd_pcm_sframes_t codec_delay
= 0;
1104 if (platform
->driver
->ops
&& platform
->driver
->ops
->pointer
)
1105 offset
= platform
->driver
->ops
->pointer(substream
);
1107 if (cpu_dai
->driver
->ops
&& cpu_dai
->driver
->ops
->delay
)
1108 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
1110 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1111 codec_dai
= rtd
->codec_dais
[i
];
1112 if (codec_dai
->driver
->ops
&& codec_dai
->driver
->ops
->delay
)
1113 codec_delay
= max(codec_delay
,
1114 codec_dai
->driver
->ops
->delay(substream
,
1117 delay
+= codec_delay
;
1120 * None of the existing platform drivers implement delay(), so
1121 * for now the codec_dai of first multicodec entry is used
1123 if (platform
->driver
->delay
)
1124 delay
+= platform
->driver
->delay(substream
, rtd
->codec_dais
[0]);
1126 runtime
->delay
= delay
;
1131 /* connect a FE and BE */
1132 static int dpcm_be_connect(struct snd_soc_pcm_runtime
*fe
,
1133 struct snd_soc_pcm_runtime
*be
, int stream
)
1135 struct snd_soc_dpcm
*dpcm
;
1137 /* only add new dpcms */
1138 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1139 if (dpcm
->be
== be
&& dpcm
->fe
== fe
)
1143 dpcm
= kzalloc(sizeof(struct snd_soc_dpcm
), GFP_KERNEL
);
1149 be
->dpcm
[stream
].runtime
= fe
->dpcm
[stream
].runtime
;
1150 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_NEW
;
1151 list_add(&dpcm
->list_be
, &fe
->dpcm
[stream
].be_clients
);
1152 list_add(&dpcm
->list_fe
, &be
->dpcm
[stream
].fe_clients
);
1154 dev_dbg(fe
->dev
, "connected new DPCM %s path %s %s %s\n",
1155 stream
? "capture" : "playback", fe
->dai_link
->name
,
1156 stream
? "<-" : "->", be
->dai_link
->name
);
1158 #ifdef CONFIG_DEBUG_FS
1159 if (fe
->debugfs_dpcm_root
)
1160 dpcm
->debugfs_state
= debugfs_create_u32(be
->dai_link
->name
, 0644,
1161 fe
->debugfs_dpcm_root
, &dpcm
->state
);
1166 /* reparent a BE onto another FE */
1167 static void dpcm_be_reparent(struct snd_soc_pcm_runtime
*fe
,
1168 struct snd_soc_pcm_runtime
*be
, int stream
)
1170 struct snd_soc_dpcm
*dpcm
;
1171 struct snd_pcm_substream
*fe_substream
, *be_substream
;
1173 /* reparent if BE is connected to other FEs */
1174 if (!be
->dpcm
[stream
].users
)
1177 be_substream
= snd_soc_dpcm_get_substream(be
, stream
);
1179 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
1183 dev_dbg(fe
->dev
, "reparent %s path %s %s %s\n",
1184 stream
? "capture" : "playback",
1185 dpcm
->fe
->dai_link
->name
,
1186 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
1188 fe_substream
= snd_soc_dpcm_get_substream(dpcm
->fe
, stream
);
1189 be_substream
->runtime
= fe_substream
->runtime
;
1194 /* disconnect a BE and FE */
1195 void dpcm_be_disconnect(struct snd_soc_pcm_runtime
*fe
, int stream
)
1197 struct snd_soc_dpcm
*dpcm
, *d
;
1199 list_for_each_entry_safe(dpcm
, d
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1200 dev_dbg(fe
->dev
, "ASoC: BE %s disconnect check for %s\n",
1201 stream
? "capture" : "playback",
1202 dpcm
->be
->dai_link
->name
);
1204 if (dpcm
->state
!= SND_SOC_DPCM_LINK_STATE_FREE
)
1207 dev_dbg(fe
->dev
, "freed DSP %s path %s %s %s\n",
1208 stream
? "capture" : "playback", fe
->dai_link
->name
,
1209 stream
? "<-" : "->", dpcm
->be
->dai_link
->name
);
1211 /* BEs still alive need new FE */
1212 dpcm_be_reparent(fe
, dpcm
->be
, stream
);
1214 #ifdef CONFIG_DEBUG_FS
1215 debugfs_remove(dpcm
->debugfs_state
);
1217 list_del(&dpcm
->list_be
);
1218 list_del(&dpcm
->list_fe
);
1223 /* get BE for DAI widget and stream */
1224 static struct snd_soc_pcm_runtime
*dpcm_get_be(struct snd_soc_card
*card
,
1225 struct snd_soc_dapm_widget
*widget
, int stream
)
1227 struct snd_soc_pcm_runtime
*be
;
1230 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1231 list_for_each_entry(be
, &card
->rtd_list
, list
) {
1233 if (!be
->dai_link
->no_pcm
)
1236 if (be
->cpu_dai
->playback_widget
== widget
)
1239 for (i
= 0; i
< be
->num_codecs
; i
++) {
1240 struct snd_soc_dai
*dai
= be
->codec_dais
[i
];
1241 if (dai
->playback_widget
== widget
)
1247 list_for_each_entry(be
, &card
->rtd_list
, list
) {
1249 if (!be
->dai_link
->no_pcm
)
1252 if (be
->cpu_dai
->capture_widget
== widget
)
1255 for (i
= 0; i
< be
->num_codecs
; i
++) {
1256 struct snd_soc_dai
*dai
= be
->codec_dais
[i
];
1257 if (dai
->capture_widget
== widget
)
1263 dev_err(card
->dev
, "ASoC: can't get %s BE for %s\n",
1264 stream
? "capture" : "playback", widget
->name
);
1268 static inline struct snd_soc_dapm_widget
*
1269 dai_get_widget(struct snd_soc_dai
*dai
, int stream
)
1271 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1272 return dai
->playback_widget
;
1274 return dai
->capture_widget
;
1277 static int widget_in_list(struct snd_soc_dapm_widget_list
*list
,
1278 struct snd_soc_dapm_widget
*widget
)
1282 for (i
= 0; i
< list
->num_widgets
; i
++) {
1283 if (widget
== list
->widgets
[i
])
1290 int dpcm_path_get(struct snd_soc_pcm_runtime
*fe
,
1291 int stream
, struct snd_soc_dapm_widget_list
**list
)
1293 struct snd_soc_dai
*cpu_dai
= fe
->cpu_dai
;
1296 /* get number of valid DAI paths and their widgets */
1297 paths
= snd_soc_dapm_dai_get_connected_widgets(cpu_dai
, stream
, list
);
1299 dev_dbg(fe
->dev
, "ASoC: found %d audio %s paths\n", paths
,
1300 stream
? "capture" : "playback");
1305 static int dpcm_prune_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
1306 struct snd_soc_dapm_widget_list
**list_
)
1308 struct snd_soc_dpcm
*dpcm
;
1309 struct snd_soc_dapm_widget_list
*list
= *list_
;
1310 struct snd_soc_dapm_widget
*widget
;
1313 /* Destroy any old FE <--> BE connections */
1314 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1317 /* is there a valid CPU DAI widget for this BE */
1318 widget
= dai_get_widget(dpcm
->be
->cpu_dai
, stream
);
1320 /* prune the BE if it's no longer in our active list */
1321 if (widget
&& widget_in_list(list
, widget
))
1324 /* is there a valid CODEC DAI widget for this BE */
1325 for (i
= 0; i
< dpcm
->be
->num_codecs
; i
++) {
1326 struct snd_soc_dai
*dai
= dpcm
->be
->codec_dais
[i
];
1327 widget
= dai_get_widget(dai
, stream
);
1329 /* prune the BE if it's no longer in our active list */
1330 if (widget
&& widget_in_list(list
, widget
))
1334 dev_dbg(fe
->dev
, "ASoC: pruning %s BE %s for %s\n",
1335 stream
? "capture" : "playback",
1336 dpcm
->be
->dai_link
->name
, fe
->dai_link
->name
);
1337 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
1338 dpcm
->be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1342 dev_dbg(fe
->dev
, "ASoC: found %d old BE paths for pruning\n", prune
);
1346 static int dpcm_add_paths(struct snd_soc_pcm_runtime
*fe
, int stream
,
1347 struct snd_soc_dapm_widget_list
**list_
)
1349 struct snd_soc_card
*card
= fe
->card
;
1350 struct snd_soc_dapm_widget_list
*list
= *list_
;
1351 struct snd_soc_pcm_runtime
*be
;
1352 int i
, new = 0, err
;
1354 /* Create any new FE <--> BE connections */
1355 for (i
= 0; i
< list
->num_widgets
; i
++) {
1357 switch (list
->widgets
[i
]->id
) {
1358 case snd_soc_dapm_dai_in
:
1359 if (stream
!= SNDRV_PCM_STREAM_PLAYBACK
)
1362 case snd_soc_dapm_dai_out
:
1363 if (stream
!= SNDRV_PCM_STREAM_CAPTURE
)
1370 /* is there a valid BE rtd for this widget */
1371 be
= dpcm_get_be(card
, list
->widgets
[i
], stream
);
1373 dev_err(fe
->dev
, "ASoC: no BE found for %s\n",
1374 list
->widgets
[i
]->name
);
1378 /* make sure BE is a real BE */
1379 if (!be
->dai_link
->no_pcm
)
1382 /* don't connect if FE is not running */
1383 if (!fe
->dpcm
[stream
].runtime
&& !fe
->fe_compr
)
1386 /* newly connected FE and BE */
1387 err
= dpcm_be_connect(fe
, be
, stream
);
1389 dev_err(fe
->dev
, "ASoC: can't connect %s\n",
1390 list
->widgets
[i
]->name
);
1392 } else if (err
== 0) /* already connected */
1396 be
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_BE
;
1400 dev_dbg(fe
->dev
, "ASoC: found %d new BE paths\n", new);
1405 * Find the corresponding BE DAIs that source or sink audio to this
1408 int dpcm_process_paths(struct snd_soc_pcm_runtime
*fe
,
1409 int stream
, struct snd_soc_dapm_widget_list
**list
, int new)
1412 return dpcm_add_paths(fe
, stream
, list
);
1414 return dpcm_prune_paths(fe
, stream
, list
);
1417 void dpcm_clear_pending_state(struct snd_soc_pcm_runtime
*fe
, int stream
)
1419 struct snd_soc_dpcm
*dpcm
;
1421 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
1422 dpcm
->be
->dpcm
[stream
].runtime_update
=
1423 SND_SOC_DPCM_UPDATE_NO
;
1426 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime
*fe
,
1429 struct snd_soc_dpcm
*dpcm
;
1431 /* disable any enabled and non active backends */
1432 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1434 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1435 struct snd_pcm_substream
*be_substream
=
1436 snd_soc_dpcm_get_substream(be
, stream
);
1438 if (be
->dpcm
[stream
].users
== 0)
1439 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1440 stream
? "capture" : "playback",
1441 be
->dpcm
[stream
].state
);
1443 if (--be
->dpcm
[stream
].users
!= 0)
1446 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1449 soc_pcm_close(be_substream
);
1450 be_substream
->runtime
= NULL
;
1451 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1455 int dpcm_be_dai_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
1457 struct snd_soc_dpcm
*dpcm
;
1460 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1461 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1463 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1464 struct snd_pcm_substream
*be_substream
=
1465 snd_soc_dpcm_get_substream(be
, stream
);
1467 if (!be_substream
) {
1468 dev_err(be
->dev
, "ASoC: no backend %s stream\n",
1469 stream
? "capture" : "playback");
1473 /* is this op for this BE ? */
1474 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1477 /* first time the dpcm is open ? */
1478 if (be
->dpcm
[stream
].users
== DPCM_MAX_BE_USERS
)
1479 dev_err(be
->dev
, "ASoC: too many users %s at open %d\n",
1480 stream
? "capture" : "playback",
1481 be
->dpcm
[stream
].state
);
1483 if (be
->dpcm
[stream
].users
++ != 0)
1486 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_NEW
) &&
1487 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_CLOSE
))
1490 dev_dbg(be
->dev
, "ASoC: open %s BE %s\n",
1491 stream
? "capture" : "playback", be
->dai_link
->name
);
1493 be_substream
->runtime
= be
->dpcm
[stream
].runtime
;
1494 err
= soc_pcm_open(be_substream
);
1496 dev_err(be
->dev
, "ASoC: BE open failed %d\n", err
);
1497 be
->dpcm
[stream
].users
--;
1498 if (be
->dpcm
[stream
].users
< 0)
1499 dev_err(be
->dev
, "ASoC: no users %s at unwind %d\n",
1500 stream
? "capture" : "playback",
1501 be
->dpcm
[stream
].state
);
1503 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1507 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1514 /* disable any enabled and non active backends */
1515 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1516 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1517 struct snd_pcm_substream
*be_substream
=
1518 snd_soc_dpcm_get_substream(be
, stream
);
1520 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1523 if (be
->dpcm
[stream
].users
== 0)
1524 dev_err(be
->dev
, "ASoC: no users %s at close %d\n",
1525 stream
? "capture" : "playback",
1526 be
->dpcm
[stream
].state
);
1528 if (--be
->dpcm
[stream
].users
!= 0)
1531 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
)
1534 soc_pcm_close(be_substream
);
1535 be_substream
->runtime
= NULL
;
1536 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1542 static void dpcm_init_runtime_hw(struct snd_pcm_runtime
*runtime
,
1543 struct snd_soc_pcm_stream
*stream
,
1546 runtime
->hw
.rate_min
= stream
->rate_min
;
1547 runtime
->hw
.rate_max
= stream
->rate_max
;
1548 runtime
->hw
.channels_min
= stream
->channels_min
;
1549 runtime
->hw
.channels_max
= stream
->channels_max
;
1550 if (runtime
->hw
.formats
)
1551 runtime
->hw
.formats
&= formats
& stream
->formats
;
1553 runtime
->hw
.formats
= formats
& stream
->formats
;
1554 runtime
->hw
.rates
= stream
->rates
;
1557 static u64
dpcm_runtime_base_format(struct snd_pcm_substream
*substream
)
1559 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1560 struct snd_soc_dpcm
*dpcm
;
1561 u64 formats
= ULLONG_MAX
;
1562 int stream
= substream
->stream
;
1564 if (!fe
->dai_link
->dpcm_merged_format
)
1568 * It returns merged BE codec format
1569 * if FE want to use it (= dpcm_merged_format)
1572 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1573 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1574 struct snd_soc_dai_driver
*codec_dai_drv
;
1575 struct snd_soc_pcm_stream
*codec_stream
;
1578 for (i
= 0; i
< be
->num_codecs
; i
++) {
1579 codec_dai_drv
= be
->codec_dais
[i
]->driver
;
1580 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1581 codec_stream
= &codec_dai_drv
->playback
;
1583 codec_stream
= &codec_dai_drv
->capture
;
1585 formats
&= codec_stream
->formats
;
1592 static void dpcm_set_fe_runtime(struct snd_pcm_substream
*substream
)
1594 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1595 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1596 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1597 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
1598 u64 format
= dpcm_runtime_base_format(substream
);
1600 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1601 dpcm_init_runtime_hw(runtime
, &cpu_dai_drv
->playback
, format
);
1603 dpcm_init_runtime_hw(runtime
, &cpu_dai_drv
->capture
, format
);
1606 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream
*substream
, int cmd
);
1608 /* Set FE's runtime_update state; the state is protected via PCM stream lock
1609 * for avoiding the race with trigger callback.
1610 * If the state is unset and a trigger is pending while the previous operation,
1611 * process the pending trigger action here.
1613 static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime
*fe
,
1614 int stream
, enum snd_soc_dpcm_update state
)
1616 struct snd_pcm_substream
*substream
=
1617 snd_soc_dpcm_get_substream(fe
, stream
);
1619 snd_pcm_stream_lock_irq(substream
);
1620 if (state
== SND_SOC_DPCM_UPDATE_NO
&& fe
->dpcm
[stream
].trigger_pending
) {
1621 dpcm_fe_dai_do_trigger(substream
,
1622 fe
->dpcm
[stream
].trigger_pending
- 1);
1623 fe
->dpcm
[stream
].trigger_pending
= 0;
1625 fe
->dpcm
[stream
].runtime_update
= state
;
1626 snd_pcm_stream_unlock_irq(substream
);
1629 static int dpcm_apply_symmetry(struct snd_pcm_substream
*fe_substream
,
1632 struct snd_soc_dpcm
*dpcm
;
1633 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1634 struct snd_soc_dai
*fe_cpu_dai
= fe
->cpu_dai
;
1637 /* apply symmetry for FE */
1638 if (soc_pcm_has_symmetry(fe_substream
))
1639 fe_substream
->runtime
->hw
.info
|= SNDRV_PCM_INFO_JOINT_DUPLEX
;
1641 /* Symmetry only applies if we've got an active stream. */
1642 if (fe_cpu_dai
->active
) {
1643 err
= soc_pcm_apply_symmetry(fe_substream
, fe_cpu_dai
);
1648 /* apply symmetry for BE */
1649 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1650 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1651 struct snd_pcm_substream
*be_substream
=
1652 snd_soc_dpcm_get_substream(be
, stream
);
1653 struct snd_soc_pcm_runtime
*rtd
= be_substream
->private_data
;
1656 if (soc_pcm_has_symmetry(be_substream
))
1657 be_substream
->runtime
->hw
.info
|= SNDRV_PCM_INFO_JOINT_DUPLEX
;
1659 /* Symmetry only applies if we've got an active stream. */
1660 if (rtd
->cpu_dai
->active
) {
1661 err
= soc_pcm_apply_symmetry(be_substream
, rtd
->cpu_dai
);
1666 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1667 if (rtd
->codec_dais
[i
]->active
) {
1668 err
= soc_pcm_apply_symmetry(be_substream
,
1669 rtd
->codec_dais
[i
]);
1679 static int dpcm_fe_dai_startup(struct snd_pcm_substream
*fe_substream
)
1681 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
1682 struct snd_pcm_runtime
*runtime
= fe_substream
->runtime
;
1683 int stream
= fe_substream
->stream
, ret
= 0;
1685 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1687 ret
= dpcm_be_dai_startup(fe
, fe_substream
->stream
);
1689 dev_err(fe
->dev
,"ASoC: failed to start some BEs %d\n", ret
);
1693 dev_dbg(fe
->dev
, "ASoC: open FE %s\n", fe
->dai_link
->name
);
1695 /* start the DAI frontend */
1696 ret
= soc_pcm_open(fe_substream
);
1698 dev_err(fe
->dev
,"ASoC: failed to start FE %d\n", ret
);
1702 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_OPEN
;
1704 dpcm_set_fe_runtime(fe_substream
);
1705 snd_pcm_limit_hw_rates(runtime
);
1707 ret
= dpcm_apply_symmetry(fe_substream
, stream
);
1709 dev_err(fe
->dev
, "ASoC: failed to apply dpcm symmetry %d\n",
1714 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1718 dpcm_be_dai_startup_unwind(fe
, fe_substream
->stream
);
1720 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1724 int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
1726 struct snd_soc_dpcm
*dpcm
;
1728 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1729 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1731 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1732 struct snd_pcm_substream
*be_substream
=
1733 snd_soc_dpcm_get_substream(be
, stream
);
1735 /* is this op for this BE ? */
1736 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1739 if (be
->dpcm
[stream
].users
== 0)
1740 dev_err(be
->dev
, "ASoC: no users %s at close - state %d\n",
1741 stream
? "capture" : "playback",
1742 be
->dpcm
[stream
].state
);
1744 if (--be
->dpcm
[stream
].users
!= 0)
1747 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1748 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
))
1751 dev_dbg(be
->dev
, "ASoC: close BE %s\n",
1752 dpcm
->fe
->dai_link
->name
);
1754 soc_pcm_close(be_substream
);
1755 be_substream
->runtime
= NULL
;
1757 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1762 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream
*substream
)
1764 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1765 int stream
= substream
->stream
;
1767 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1769 /* shutdown the BEs */
1770 dpcm_be_dai_shutdown(fe
, substream
->stream
);
1772 dev_dbg(fe
->dev
, "ASoC: close FE %s\n", fe
->dai_link
->name
);
1774 /* now shutdown the frontend */
1775 soc_pcm_close(substream
);
1777 /* run the stream event for each BE */
1778 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_STOP
);
1780 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_CLOSE
;
1781 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1785 int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime
*fe
, int stream
)
1787 struct snd_soc_dpcm
*dpcm
;
1789 /* only hw_params backends that are either sinks or sources
1790 * to this frontend DAI */
1791 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1793 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1794 struct snd_pcm_substream
*be_substream
=
1795 snd_soc_dpcm_get_substream(be
, stream
);
1797 /* is this op for this BE ? */
1798 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1801 /* only free hw when no longer used - check all FEs */
1802 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1805 /* do not free hw if this BE is used by other FE */
1806 if (be
->dpcm
[stream
].users
> 1)
1809 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1810 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
1811 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1812 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PAUSED
) &&
1813 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
) &&
1814 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_SUSPEND
))
1817 dev_dbg(be
->dev
, "ASoC: hw_free BE %s\n",
1818 dpcm
->fe
->dai_link
->name
);
1820 soc_pcm_hw_free(be_substream
);
1822 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1828 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream
*substream
)
1830 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1831 int err
, stream
= substream
->stream
;
1833 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1834 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1836 dev_dbg(fe
->dev
, "ASoC: hw_free FE %s\n", fe
->dai_link
->name
);
1838 /* call hw_free on the frontend */
1839 err
= soc_pcm_hw_free(substream
);
1841 dev_err(fe
->dev
,"ASoC: hw_free FE %s failed\n",
1842 fe
->dai_link
->name
);
1844 /* only hw_params backends that are either sinks or sources
1845 * to this frontend DAI */
1846 err
= dpcm_be_dai_hw_free(fe
, stream
);
1848 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_FREE
;
1849 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1851 mutex_unlock(&fe
->card
->mutex
);
1855 int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime
*fe
, int stream
)
1857 struct snd_soc_dpcm
*dpcm
;
1860 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1862 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1863 struct snd_pcm_substream
*be_substream
=
1864 snd_soc_dpcm_get_substream(be
, stream
);
1866 /* is this op for this BE ? */
1867 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1870 /* only allow hw_params() if no connected FEs are running */
1871 if (!snd_soc_dpcm_can_be_params(fe
, be
, stream
))
1874 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1875 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1876 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
))
1879 dev_dbg(be
->dev
, "ASoC: hw_params BE %s\n",
1880 dpcm
->fe
->dai_link
->name
);
1882 /* copy params for each dpcm */
1883 memcpy(&dpcm
->hw_params
, &fe
->dpcm
[stream
].hw_params
,
1884 sizeof(struct snd_pcm_hw_params
));
1886 /* perform any hw_params fixups */
1887 if (be
->dai_link
->be_hw_params_fixup
) {
1888 ret
= be
->dai_link
->be_hw_params_fixup(be
,
1892 "ASoC: hw_params BE fixup failed %d\n",
1898 ret
= soc_pcm_hw_params(be_substream
, &dpcm
->hw_params
);
1900 dev_err(dpcm
->be
->dev
,
1901 "ASoC: hw_params BE failed %d\n", ret
);
1905 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1910 /* disable any enabled and non active backends */
1911 list_for_each_entry_continue_reverse(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1912 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1913 struct snd_pcm_substream
*be_substream
=
1914 snd_soc_dpcm_get_substream(be
, stream
);
1916 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
1919 /* only allow hw_free() if no connected FEs are running */
1920 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
1923 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_OPEN
) &&
1924 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
1925 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_FREE
) &&
1926 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
1929 soc_pcm_hw_free(be_substream
);
1935 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream
*substream
,
1936 struct snd_pcm_hw_params
*params
)
1938 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
1939 int ret
, stream
= substream
->stream
;
1941 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
1942 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
1944 memcpy(&fe
->dpcm
[substream
->stream
].hw_params
, params
,
1945 sizeof(struct snd_pcm_hw_params
));
1946 ret
= dpcm_be_dai_hw_params(fe
, substream
->stream
);
1948 dev_err(fe
->dev
,"ASoC: hw_params BE failed %d\n", ret
);
1952 dev_dbg(fe
->dev
, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
1953 fe
->dai_link
->name
, params_rate(params
),
1954 params_channels(params
), params_format(params
));
1956 /* call hw_params on the frontend */
1957 ret
= soc_pcm_hw_params(substream
, params
);
1959 dev_err(fe
->dev
,"ASoC: hw_params FE failed %d\n", ret
);
1960 dpcm_be_dai_hw_free(fe
, stream
);
1962 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_HW_PARAMS
;
1965 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
1966 mutex_unlock(&fe
->card
->mutex
);
1970 static int dpcm_do_trigger(struct snd_soc_dpcm
*dpcm
,
1971 struct snd_pcm_substream
*substream
, int cmd
)
1975 dev_dbg(dpcm
->be
->dev
, "ASoC: trigger BE %s cmd %d\n",
1976 dpcm
->fe
->dai_link
->name
, cmd
);
1978 ret
= soc_pcm_trigger(substream
, cmd
);
1980 dev_err(dpcm
->be
->dev
,"ASoC: trigger BE failed %d\n", ret
);
1985 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime
*fe
, int stream
,
1988 struct snd_soc_dpcm
*dpcm
;
1991 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
1993 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
1994 struct snd_pcm_substream
*be_substream
=
1995 snd_soc_dpcm_get_substream(be
, stream
);
1997 /* is this op for this BE ? */
1998 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
2002 case SNDRV_PCM_TRIGGER_START
:
2003 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PREPARE
) &&
2004 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
))
2007 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2011 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
2013 case SNDRV_PCM_TRIGGER_RESUME
:
2014 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_SUSPEND
))
2017 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2021 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
2023 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
2024 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_PAUSED
))
2027 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2031 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
2033 case SNDRV_PCM_TRIGGER_STOP
:
2034 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
2037 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
2040 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2044 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
2046 case SNDRV_PCM_TRIGGER_SUSPEND
:
2047 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
2050 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
2053 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2057 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_SUSPEND
;
2059 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
2060 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
2063 if (!snd_soc_dpcm_can_be_free_stop(fe
, be
, stream
))
2066 ret
= dpcm_do_trigger(dpcm
, be_substream
, cmd
);
2070 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PAUSED
;
2077 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger
);
2079 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream
*substream
, int cmd
)
2081 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
2082 int stream
= substream
->stream
, ret
;
2083 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
2085 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_FE
;
2088 case SND_SOC_DPCM_TRIGGER_PRE
:
2089 /* call trigger on the frontend before the backend. */
2091 dev_dbg(fe
->dev
, "ASoC: pre trigger FE %s cmd %d\n",
2092 fe
->dai_link
->name
, cmd
);
2094 ret
= soc_pcm_trigger(substream
, cmd
);
2096 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
2100 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
2102 case SND_SOC_DPCM_TRIGGER_POST
:
2103 /* call trigger on the frontend after the backend. */
2105 ret
= dpcm_be_dai_trigger(fe
, substream
->stream
, cmd
);
2107 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
2111 dev_dbg(fe
->dev
, "ASoC: post trigger FE %s cmd %d\n",
2112 fe
->dai_link
->name
, cmd
);
2114 ret
= soc_pcm_trigger(substream
, cmd
);
2116 case SND_SOC_DPCM_TRIGGER_BESPOKE
:
2117 /* bespoke trigger() - handles both FE and BEs */
2119 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd %d\n",
2120 fe
->dai_link
->name
, cmd
);
2122 ret
= soc_pcm_bespoke_trigger(substream
, cmd
);
2124 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
2129 dev_err(fe
->dev
, "ASoC: invalid trigger cmd %d for %s\n", cmd
,
2130 fe
->dai_link
->name
);
2136 case SNDRV_PCM_TRIGGER_START
:
2137 case SNDRV_PCM_TRIGGER_RESUME
:
2138 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
2139 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_START
;
2141 case SNDRV_PCM_TRIGGER_STOP
:
2142 case SNDRV_PCM_TRIGGER_SUSPEND
:
2143 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
2144 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_STOP
;
2149 fe
->dpcm
[stream
].runtime_update
= SND_SOC_DPCM_UPDATE_NO
;
2153 static int dpcm_fe_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
)
2155 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
2156 int stream
= substream
->stream
;
2158 /* if FE's runtime_update is already set, we're in race;
2159 * process this trigger later at exit
2161 if (fe
->dpcm
[stream
].runtime_update
!= SND_SOC_DPCM_UPDATE_NO
) {
2162 fe
->dpcm
[stream
].trigger_pending
= cmd
+ 1;
2163 return 0; /* delayed, assuming it's successful */
2166 /* we're alone, let's trigger */
2167 return dpcm_fe_dai_do_trigger(substream
, cmd
);
2170 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime
*fe
, int stream
)
2172 struct snd_soc_dpcm
*dpcm
;
2175 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2177 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2178 struct snd_pcm_substream
*be_substream
=
2179 snd_soc_dpcm_get_substream(be
, stream
);
2181 /* is this op for this BE ? */
2182 if (!snd_soc_dpcm_be_can_update(fe
, be
, stream
))
2185 if ((be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2186 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_STOP
) &&
2187 (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_SUSPEND
))
2190 dev_dbg(be
->dev
, "ASoC: prepare BE %s\n",
2191 dpcm
->fe
->dai_link
->name
);
2193 ret
= soc_pcm_prepare(be_substream
);
2195 dev_err(be
->dev
, "ASoC: backend prepare failed %d\n",
2200 be
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
2205 static int dpcm_fe_dai_prepare(struct snd_pcm_substream
*substream
)
2207 struct snd_soc_pcm_runtime
*fe
= substream
->private_data
;
2208 int stream
= substream
->stream
, ret
= 0;
2210 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2212 dev_dbg(fe
->dev
, "ASoC: prepare FE %s\n", fe
->dai_link
->name
);
2214 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_FE
);
2216 /* there is no point preparing this FE if there are no BEs */
2217 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
2218 dev_err(fe
->dev
, "ASoC: no backend DAIs enabled for %s\n",
2219 fe
->dai_link
->name
);
2224 ret
= dpcm_be_dai_prepare(fe
, substream
->stream
);
2228 /* call prepare on the frontend */
2229 ret
= soc_pcm_prepare(substream
);
2231 dev_err(fe
->dev
,"ASoC: prepare FE %s failed\n",
2232 fe
->dai_link
->name
);
2236 /* run the stream event for each BE */
2237 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_START
);
2238 fe
->dpcm
[stream
].state
= SND_SOC_DPCM_STATE_PREPARE
;
2241 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2242 mutex_unlock(&fe
->card
->mutex
);
2247 static int soc_pcm_ioctl(struct snd_pcm_substream
*substream
,
2248 unsigned int cmd
, void *arg
)
2250 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
2251 struct snd_soc_platform
*platform
= rtd
->platform
;
2253 if (platform
->driver
->ops
&& platform
->driver
->ops
->ioctl
)
2254 return platform
->driver
->ops
->ioctl(substream
, cmd
, arg
);
2255 return snd_pcm_lib_ioctl(substream
, cmd
, arg
);
2258 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime
*fe
, int stream
)
2260 struct snd_pcm_substream
*substream
=
2261 snd_soc_dpcm_get_substream(fe
, stream
);
2262 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
2265 dev_dbg(fe
->dev
, "ASoC: runtime %s close on FE %s\n",
2266 stream
? "capture" : "playback", fe
->dai_link
->name
);
2268 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
2269 /* call bespoke trigger - FE takes care of all BE triggers */
2270 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd stop\n",
2271 fe
->dai_link
->name
);
2273 err
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_STOP
);
2275 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
2277 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd stop\n",
2278 fe
->dai_link
->name
);
2280 err
= dpcm_be_dai_trigger(fe
, stream
, SNDRV_PCM_TRIGGER_STOP
);
2282 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", err
);
2285 err
= dpcm_be_dai_hw_free(fe
, stream
);
2287 dev_err(fe
->dev
,"ASoC: hw_free FE failed %d\n", err
);
2289 err
= dpcm_be_dai_shutdown(fe
, stream
);
2291 dev_err(fe
->dev
,"ASoC: shutdown FE failed %d\n", err
);
2293 /* run the stream event for each BE */
2294 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
2299 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime
*fe
, int stream
)
2301 struct snd_pcm_substream
*substream
=
2302 snd_soc_dpcm_get_substream(fe
, stream
);
2303 struct snd_soc_dpcm
*dpcm
;
2304 enum snd_soc_dpcm_trigger trigger
= fe
->dai_link
->trigger
[stream
];
2307 dev_dbg(fe
->dev
, "ASoC: runtime %s open on FE %s\n",
2308 stream
? "capture" : "playback", fe
->dai_link
->name
);
2310 /* Only start the BE if the FE is ready */
2311 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_FREE
||
2312 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_CLOSE
)
2315 /* startup must always be called for new BEs */
2316 ret
= dpcm_be_dai_startup(fe
, stream
);
2320 /* keep going if FE state is > open */
2321 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_OPEN
)
2324 ret
= dpcm_be_dai_hw_params(fe
, stream
);
2328 /* keep going if FE state is > hw_params */
2329 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_HW_PARAMS
)
2333 ret
= dpcm_be_dai_prepare(fe
, stream
);
2337 /* run the stream event for each BE */
2338 dpcm_dapm_stream_event(fe
, stream
, SND_SOC_DAPM_STREAM_NOP
);
2340 /* keep going if FE state is > prepare */
2341 if (fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_PREPARE
||
2342 fe
->dpcm
[stream
].state
== SND_SOC_DPCM_STATE_STOP
)
2345 if (trigger
== SND_SOC_DPCM_TRIGGER_BESPOKE
) {
2346 /* call trigger on the frontend - FE takes care of all BE triggers */
2347 dev_dbg(fe
->dev
, "ASoC: bespoke trigger FE %s cmd start\n",
2348 fe
->dai_link
->name
);
2350 ret
= soc_pcm_bespoke_trigger(substream
, SNDRV_PCM_TRIGGER_START
);
2352 dev_err(fe
->dev
,"ASoC: bespoke trigger FE failed %d\n", ret
);
2356 dev_dbg(fe
->dev
, "ASoC: trigger FE %s cmd start\n",
2357 fe
->dai_link
->name
);
2359 ret
= dpcm_be_dai_trigger(fe
, stream
,
2360 SNDRV_PCM_TRIGGER_START
);
2362 dev_err(fe
->dev
,"ASoC: trigger FE failed %d\n", ret
);
2370 dpcm_be_dai_hw_free(fe
, stream
);
2372 dpcm_be_dai_shutdown(fe
, stream
);
2374 /* disconnect any non started BEs */
2375 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2376 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2377 if (be
->dpcm
[stream
].state
!= SND_SOC_DPCM_STATE_START
)
2378 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2384 static int dpcm_run_new_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2388 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_BE
);
2389 ret
= dpcm_run_update_startup(fe
, stream
);
2391 dev_err(fe
->dev
, "ASoC: failed to startup some BEs\n");
2392 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2397 static int dpcm_run_old_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2401 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_BE
);
2402 ret
= dpcm_run_update_shutdown(fe
, stream
);
2404 dev_err(fe
->dev
, "ASoC: failed to shutdown some BEs\n");
2405 dpcm_set_fe_update_state(fe
, stream
, SND_SOC_DPCM_UPDATE_NO
);
2410 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2413 int soc_dpcm_runtime_update(struct snd_soc_card
*card
)
2415 struct snd_soc_pcm_runtime
*fe
;
2416 int old
, new, paths
;
2418 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2419 list_for_each_entry(fe
, &card
->rtd_list
, list
) {
2420 struct snd_soc_dapm_widget_list
*list
;
2422 /* make sure link is FE */
2423 if (!fe
->dai_link
->dynamic
)
2426 /* only check active links */
2427 if (!fe
->cpu_dai
->active
)
2430 /* DAPM sync will call this to update DSP paths */
2431 dev_dbg(fe
->dev
, "ASoC: DPCM runtime update for FE %s\n",
2432 fe
->dai_link
->name
);
2434 /* skip if FE doesn't have playback capability */
2435 if (!fe
->cpu_dai
->driver
->playback
.channels_min
2436 || !fe
->codec_dai
->driver
->playback
.channels_min
)
2439 /* skip if FE isn't currently playing */
2440 if (!fe
->cpu_dai
->playback_active
2441 || !fe
->codec_dai
->playback_active
)
2444 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
);
2446 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
2447 fe
->dai_link
->name
, "playback");
2448 mutex_unlock(&card
->mutex
);
2452 /* update any new playback paths */
2453 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 1);
2455 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2456 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2457 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2460 /* update any old playback paths */
2461 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_PLAYBACK
, &list
, 0);
2463 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2464 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2465 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_PLAYBACK
);
2468 dpcm_path_put(&list
);
2470 /* skip if FE doesn't have capture capability */
2471 if (!fe
->cpu_dai
->driver
->capture
.channels_min
2472 || !fe
->codec_dai
->driver
->capture
.channels_min
)
2475 /* skip if FE isn't currently capturing */
2476 if (!fe
->cpu_dai
->capture_active
2477 || !fe
->codec_dai
->capture_active
)
2480 paths
= dpcm_path_get(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
);
2482 dev_warn(fe
->dev
, "ASoC: %s no valid %s path\n",
2483 fe
->dai_link
->name
, "capture");
2484 mutex_unlock(&card
->mutex
);
2488 /* update any new capture paths */
2489 new = dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 1);
2491 dpcm_run_new_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2492 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2493 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2496 /* update any old capture paths */
2497 old
= dpcm_process_paths(fe
, SNDRV_PCM_STREAM_CAPTURE
, &list
, 0);
2499 dpcm_run_old_update(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2500 dpcm_clear_pending_state(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2501 dpcm_be_disconnect(fe
, SNDRV_PCM_STREAM_CAPTURE
);
2504 dpcm_path_put(&list
);
2507 mutex_unlock(&card
->mutex
);
2510 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime
*fe
, int mute
)
2512 struct snd_soc_dpcm
*dpcm
;
2513 struct list_head
*clients
=
2514 &fe
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
;
2516 list_for_each_entry(dpcm
, clients
, list_be
) {
2518 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2521 if (be
->dai_link
->ignore_suspend
)
2524 for (i
= 0; i
< be
->num_codecs
; i
++) {
2525 struct snd_soc_dai
*dai
= be
->codec_dais
[i
];
2526 struct snd_soc_dai_driver
*drv
= dai
->driver
;
2528 dev_dbg(be
->dev
, "ASoC: BE digital mute %s\n",
2529 be
->dai_link
->name
);
2531 if (drv
->ops
&& drv
->ops
->digital_mute
&&
2532 dai
->playback_active
)
2533 drv
->ops
->digital_mute(dai
, mute
);
2540 static int dpcm_fe_dai_open(struct snd_pcm_substream
*fe_substream
)
2542 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
2543 struct snd_soc_dpcm
*dpcm
;
2544 struct snd_soc_dapm_widget_list
*list
;
2546 int stream
= fe_substream
->stream
;
2548 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2549 fe
->dpcm
[stream
].runtime
= fe_substream
->runtime
;
2551 ret
= dpcm_path_get(fe
, stream
, &list
);
2553 mutex_unlock(&fe
->card
->mutex
);
2555 } else if (ret
== 0) {
2556 dev_dbg(fe
->dev
, "ASoC: %s no valid %s route\n",
2557 fe
->dai_link
->name
, stream
? "capture" : "playback");
2560 /* calculate valid and active FE <-> BE dpcms */
2561 dpcm_process_paths(fe
, stream
, &list
, 1);
2563 ret
= dpcm_fe_dai_startup(fe_substream
);
2565 /* clean up all links */
2566 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
2567 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2569 dpcm_be_disconnect(fe
, stream
);
2570 fe
->dpcm
[stream
].runtime
= NULL
;
2573 dpcm_clear_pending_state(fe
, stream
);
2574 dpcm_path_put(&list
);
2575 mutex_unlock(&fe
->card
->mutex
);
2579 static int dpcm_fe_dai_close(struct snd_pcm_substream
*fe_substream
)
2581 struct snd_soc_pcm_runtime
*fe
= fe_substream
->private_data
;
2582 struct snd_soc_dpcm
*dpcm
;
2583 int stream
= fe_substream
->stream
, ret
;
2585 mutex_lock_nested(&fe
->card
->mutex
, SND_SOC_CARD_CLASS_RUNTIME
);
2586 ret
= dpcm_fe_dai_shutdown(fe_substream
);
2588 /* mark FE's links ready to prune */
2589 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
)
2590 dpcm
->state
= SND_SOC_DPCM_LINK_STATE_FREE
;
2592 dpcm_be_disconnect(fe
, stream
);
2594 fe
->dpcm
[stream
].runtime
= NULL
;
2595 mutex_unlock(&fe
->card
->mutex
);
2599 /* create a new pcm */
2600 int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2602 struct snd_soc_platform
*platform
= rtd
->platform
;
2603 struct snd_soc_dai
*codec_dai
;
2604 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2605 struct snd_pcm
*pcm
;
2607 int ret
= 0, playback
= 0, capture
= 0;
2610 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->no_pcm
) {
2611 playback
= rtd
->dai_link
->dpcm_playback
;
2612 capture
= rtd
->dai_link
->dpcm_capture
;
2614 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2615 codec_dai
= rtd
->codec_dais
[i
];
2616 if (codec_dai
->driver
->playback
.channels_min
)
2618 if (codec_dai
->driver
->capture
.channels_min
)
2622 capture
= capture
&& cpu_dai
->driver
->capture
.channels_min
;
2623 playback
= playback
&& cpu_dai
->driver
->playback
.channels_min
;
2626 if (rtd
->dai_link
->playback_only
) {
2631 if (rtd
->dai_link
->capture_only
) {
2636 /* create the PCM */
2637 if (rtd
->dai_link
->no_pcm
) {
2638 snprintf(new_name
, sizeof(new_name
), "(%s)",
2639 rtd
->dai_link
->stream_name
);
2641 ret
= snd_pcm_new_internal(rtd
->card
->snd_card
, new_name
, num
,
2642 playback
, capture
, &pcm
);
2644 if (rtd
->dai_link
->dynamic
)
2645 snprintf(new_name
, sizeof(new_name
), "%s (*)",
2646 rtd
->dai_link
->stream_name
);
2648 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2649 rtd
->dai_link
->stream_name
,
2650 (rtd
->num_codecs
> 1) ?
2651 "multicodec" : rtd
->codec_dai
->name
, num
);
2653 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
, num
, playback
,
2657 dev_err(rtd
->card
->dev
, "ASoC: can't create pcm for %s\n",
2658 rtd
->dai_link
->name
);
2661 dev_dbg(rtd
->card
->dev
, "ASoC: registered pcm #%d %s\n",num
, new_name
);
2663 /* DAPM dai link stream work */
2664 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
2666 pcm
->nonatomic
= rtd
->dai_link
->nonatomic
;
2668 pcm
->private_data
= rtd
;
2670 if (rtd
->dai_link
->no_pcm
) {
2672 pcm
->streams
[SNDRV_PCM_STREAM_PLAYBACK
].substream
->private_data
= rtd
;
2674 pcm
->streams
[SNDRV_PCM_STREAM_CAPTURE
].substream
->private_data
= rtd
;
2678 /* ASoC PCM operations */
2679 if (rtd
->dai_link
->dynamic
) {
2680 rtd
->ops
.open
= dpcm_fe_dai_open
;
2681 rtd
->ops
.hw_params
= dpcm_fe_dai_hw_params
;
2682 rtd
->ops
.prepare
= dpcm_fe_dai_prepare
;
2683 rtd
->ops
.trigger
= dpcm_fe_dai_trigger
;
2684 rtd
->ops
.hw_free
= dpcm_fe_dai_hw_free
;
2685 rtd
->ops
.close
= dpcm_fe_dai_close
;
2686 rtd
->ops
.pointer
= soc_pcm_pointer
;
2687 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2689 rtd
->ops
.open
= soc_pcm_open
;
2690 rtd
->ops
.hw_params
= soc_pcm_hw_params
;
2691 rtd
->ops
.prepare
= soc_pcm_prepare
;
2692 rtd
->ops
.trigger
= soc_pcm_trigger
;
2693 rtd
->ops
.hw_free
= soc_pcm_hw_free
;
2694 rtd
->ops
.close
= soc_pcm_close
;
2695 rtd
->ops
.pointer
= soc_pcm_pointer
;
2696 rtd
->ops
.ioctl
= soc_pcm_ioctl
;
2699 if (platform
->driver
->ops
) {
2700 rtd
->ops
.ack
= platform
->driver
->ops
->ack
;
2701 rtd
->ops
.copy
= platform
->driver
->ops
->copy
;
2702 rtd
->ops
.silence
= platform
->driver
->ops
->silence
;
2703 rtd
->ops
.page
= platform
->driver
->ops
->page
;
2704 rtd
->ops
.mmap
= platform
->driver
->ops
->mmap
;
2708 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &rtd
->ops
);
2711 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &rtd
->ops
);
2713 if (platform
->driver
->pcm_new
) {
2714 ret
= platform
->driver
->pcm_new(rtd
);
2716 dev_err(platform
->dev
,
2717 "ASoC: pcm constructor failed: %d\n",
2723 pcm
->private_free
= platform
->driver
->pcm_free
;
2725 dev_info(rtd
->card
->dev
, "%s <-> %s mapping ok\n",
2726 (rtd
->num_codecs
> 1) ? "multicodec" : rtd
->codec_dai
->name
,
2731 /* is the current PCM operation for this FE ? */
2732 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime
*fe
, int stream
)
2734 if (fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
)
2738 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update
);
2740 /* is the current PCM operation for this BE ? */
2741 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime
*fe
,
2742 struct snd_soc_pcm_runtime
*be
, int stream
)
2744 if ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_FE
) ||
2745 ((fe
->dpcm
[stream
].runtime_update
== SND_SOC_DPCM_UPDATE_BE
) &&
2746 be
->dpcm
[stream
].runtime_update
))
2750 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update
);
2752 /* get the substream for this BE */
2753 struct snd_pcm_substream
*
2754 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime
*be
, int stream
)
2756 return be
->pcm
->streams
[stream
].substream
;
2758 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream
);
2760 /* get the BE runtime state */
2761 enum snd_soc_dpcm_state
2762 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime
*be
, int stream
)
2764 return be
->dpcm
[stream
].state
;
2766 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state
);
2768 /* set the BE runtime state */
2769 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime
*be
,
2770 int stream
, enum snd_soc_dpcm_state state
)
2772 be
->dpcm
[stream
].state
= state
;
2774 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state
);
2777 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
2778 * are not running, paused or suspended for the specified stream direction.
2780 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime
*fe
,
2781 struct snd_soc_pcm_runtime
*be
, int stream
)
2783 struct snd_soc_dpcm
*dpcm
;
2786 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2791 state
= dpcm
->fe
->dpcm
[stream
].state
;
2792 if (state
== SND_SOC_DPCM_STATE_START
||
2793 state
== SND_SOC_DPCM_STATE_PAUSED
||
2794 state
== SND_SOC_DPCM_STATE_SUSPEND
)
2798 /* it's safe to free/stop this BE DAI */
2801 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop
);
2804 * We can only change hw params a BE DAI if any of it's FE are not prepared,
2805 * running, paused or suspended for the specified stream direction.
2807 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime
*fe
,
2808 struct snd_soc_pcm_runtime
*be
, int stream
)
2810 struct snd_soc_dpcm
*dpcm
;
2813 list_for_each_entry(dpcm
, &be
->dpcm
[stream
].fe_clients
, list_fe
) {
2818 state
= dpcm
->fe
->dpcm
[stream
].state
;
2819 if (state
== SND_SOC_DPCM_STATE_START
||
2820 state
== SND_SOC_DPCM_STATE_PAUSED
||
2821 state
== SND_SOC_DPCM_STATE_SUSPEND
||
2822 state
== SND_SOC_DPCM_STATE_PREPARE
)
2826 /* it's safe to change hw_params */
2829 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params
);
2831 int snd_soc_platform_trigger(struct snd_pcm_substream
*substream
,
2832 int cmd
, struct snd_soc_platform
*platform
)
2834 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
)
2835 return platform
->driver
->ops
->trigger(substream
, cmd
);
2838 EXPORT_SYMBOL_GPL(snd_soc_platform_trigger
);
2840 #ifdef CONFIG_DEBUG_FS
2841 static char *dpcm_state_string(enum snd_soc_dpcm_state state
)
2844 case SND_SOC_DPCM_STATE_NEW
:
2846 case SND_SOC_DPCM_STATE_OPEN
:
2848 case SND_SOC_DPCM_STATE_HW_PARAMS
:
2850 case SND_SOC_DPCM_STATE_PREPARE
:
2852 case SND_SOC_DPCM_STATE_START
:
2854 case SND_SOC_DPCM_STATE_STOP
:
2856 case SND_SOC_DPCM_STATE_SUSPEND
:
2858 case SND_SOC_DPCM_STATE_PAUSED
:
2860 case SND_SOC_DPCM_STATE_HW_FREE
:
2862 case SND_SOC_DPCM_STATE_CLOSE
:
2869 static ssize_t
dpcm_show_state(struct snd_soc_pcm_runtime
*fe
,
2870 int stream
, char *buf
, size_t size
)
2872 struct snd_pcm_hw_params
*params
= &fe
->dpcm
[stream
].hw_params
;
2873 struct snd_soc_dpcm
*dpcm
;
2877 offset
+= snprintf(buf
+ offset
, size
- offset
,
2878 "[%s - %s]\n", fe
->dai_link
->name
,
2879 stream
? "Capture" : "Playback");
2881 offset
+= snprintf(buf
+ offset
, size
- offset
, "State: %s\n",
2882 dpcm_state_string(fe
->dpcm
[stream
].state
));
2884 if ((fe
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2885 (fe
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2886 offset
+= snprintf(buf
+ offset
, size
- offset
,
2888 "Format = %s, Channels = %d, Rate = %d\n",
2889 snd_pcm_format_name(params_format(params
)),
2890 params_channels(params
),
2891 params_rate(params
));
2894 offset
+= snprintf(buf
+ offset
, size
- offset
, "Backends:\n");
2896 if (list_empty(&fe
->dpcm
[stream
].be_clients
)) {
2897 offset
+= snprintf(buf
+ offset
, size
- offset
,
2898 " No active DSP links\n");
2902 list_for_each_entry(dpcm
, &fe
->dpcm
[stream
].be_clients
, list_be
) {
2903 struct snd_soc_pcm_runtime
*be
= dpcm
->be
;
2904 params
= &dpcm
->hw_params
;
2906 offset
+= snprintf(buf
+ offset
, size
- offset
,
2907 "- %s\n", be
->dai_link
->name
);
2909 offset
+= snprintf(buf
+ offset
, size
- offset
,
2911 dpcm_state_string(be
->dpcm
[stream
].state
));
2913 if ((be
->dpcm
[stream
].state
>= SND_SOC_DPCM_STATE_HW_PARAMS
) &&
2914 (be
->dpcm
[stream
].state
<= SND_SOC_DPCM_STATE_STOP
))
2915 offset
+= snprintf(buf
+ offset
, size
- offset
,
2916 " Hardware Params: "
2917 "Format = %s, Channels = %d, Rate = %d\n",
2918 snd_pcm_format_name(params_format(params
)),
2919 params_channels(params
),
2920 params_rate(params
));
2927 static ssize_t
dpcm_state_read_file(struct file
*file
, char __user
*user_buf
,
2928 size_t count
, loff_t
*ppos
)
2930 struct snd_soc_pcm_runtime
*fe
= file
->private_data
;
2931 ssize_t out_count
= PAGE_SIZE
, offset
= 0, ret
= 0;
2934 buf
= kmalloc(out_count
, GFP_KERNEL
);
2938 if (fe
->cpu_dai
->driver
->playback
.channels_min
)
2939 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_PLAYBACK
,
2940 buf
+ offset
, out_count
- offset
);
2942 if (fe
->cpu_dai
->driver
->capture
.channels_min
)
2943 offset
+= dpcm_show_state(fe
, SNDRV_PCM_STREAM_CAPTURE
,
2944 buf
+ offset
, out_count
- offset
);
2946 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, offset
);
2952 static const struct file_operations dpcm_state_fops
= {
2953 .open
= simple_open
,
2954 .read
= dpcm_state_read_file
,
2955 .llseek
= default_llseek
,
2958 void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime
*rtd
)
2963 if (!rtd
->card
->debugfs_card_root
)
2966 rtd
->debugfs_dpcm_root
= debugfs_create_dir(rtd
->dai_link
->name
,
2967 rtd
->card
->debugfs_card_root
);
2968 if (!rtd
->debugfs_dpcm_root
) {
2970 "ASoC: Failed to create dpcm debugfs directory %s\n",
2971 rtd
->dai_link
->name
);
2975 rtd
->debugfs_dpcm_state
= debugfs_create_file("state", 0444,
2976 rtd
->debugfs_dpcm_root
,
2977 rtd
, &dpcm_state_fops
);