2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
8 * with code, comments and ideas from :-
9 * Richard Purdie <richard@openedhand.com>
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 * o Add hw rules to enforce rates, etc.
18 * o More testing with other codecs/machines.
19 * o Add more codecs and platforms to ensure good API coverage.
20 * o Support TDM on PCM and I2S
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
28 #include <linux/bitops.h>
29 #include <linux/debugfs.h>
30 #include <linux/platform_device.h>
31 #include <sound/ac97_codec.h>
32 #include <sound/core.h>
33 #include <sound/pcm.h>
34 #include <sound/pcm_params.h>
35 #include <sound/soc.h>
36 #include <sound/soc-dapm.h>
37 #include <sound/initval.h>
39 static DEFINE_MUTEX(pcm_mutex
);
40 static DEFINE_MUTEX(io_mutex
);
41 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
43 #ifdef CONFIG_DEBUG_FS
44 static struct dentry
*debugfs_root
;
47 static DEFINE_MUTEX(client_mutex
);
48 static LIST_HEAD(card_list
);
49 static LIST_HEAD(dai_list
);
50 static LIST_HEAD(platform_list
);
51 static LIST_HEAD(codec_list
);
53 static int snd_soc_register_card(struct snd_soc_card
*card
);
54 static int snd_soc_unregister_card(struct snd_soc_card
*card
);
57 * This is a timeout to do a DAPM powerdown after a stream is closed().
58 * It can be used to eliminate pops between different playback streams, e.g.
59 * between two audio tracks.
61 static int pmdown_time
= 5000;
62 module_param(pmdown_time
, int, 0);
63 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
66 * This function forces any delayed work to be queued and run.
68 static int run_delayed_work(struct delayed_work
*dwork
)
72 /* cancel any work waiting to be queued. */
73 ret
= cancel_delayed_work(dwork
);
75 /* if there was any work waiting then we run it now and
76 * wait for it's completion */
78 schedule_delayed_work(dwork
, 0);
79 flush_scheduled_work();
84 #ifdef CONFIG_SND_SOC_AC97_BUS
85 /* unregister ac97 codec */
86 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
88 if (codec
->ac97
->dev
.bus
)
89 device_unregister(&codec
->ac97
->dev
);
93 /* stop no dev release warning */
94 static void soc_ac97_device_release(struct device
*dev
){}
96 /* register ac97 codec to bus */
97 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
101 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
102 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
103 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
105 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
106 codec
->card
->number
, 0, codec
->name
);
107 err
= device_register(&codec
->ac97
->dev
);
109 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
110 codec
->ac97
->dev
.bus
= NULL
;
117 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
119 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
120 struct snd_soc_device
*socdev
= rtd
->socdev
;
121 struct snd_soc_card
*card
= socdev
->card
;
122 struct snd_soc_dai_link
*machine
= rtd
->dai
;
123 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
124 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
127 if (codec_dai
->symmetric_rates
|| cpu_dai
->symmetric_rates
||
128 machine
->symmetric_rates
) {
129 dev_dbg(card
->dev
, "Symmetry forces %dHz rate\n",
132 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
133 SNDRV_PCM_HW_PARAM_RATE
,
138 "Unable to apply rate symmetry constraint: %d\n", ret
);
147 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
148 * then initialized and any private data can be allocated. This also calls
149 * startup for the cpu DAI, platform, machine and codec DAI.
151 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
153 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
154 struct snd_soc_device
*socdev
= rtd
->socdev
;
155 struct snd_soc_card
*card
= socdev
->card
;
156 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
157 struct snd_soc_dai_link
*machine
= rtd
->dai
;
158 struct snd_soc_platform
*platform
= card
->platform
;
159 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
160 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
163 mutex_lock(&pcm_mutex
);
165 /* startup the audio subsystem */
166 if (cpu_dai
->ops
->startup
) {
167 ret
= cpu_dai
->ops
->startup(substream
, cpu_dai
);
169 printk(KERN_ERR
"asoc: can't open interface %s\n",
175 if (platform
->pcm_ops
->open
) {
176 ret
= platform
->pcm_ops
->open(substream
);
178 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
183 if (codec_dai
->ops
->startup
) {
184 ret
= codec_dai
->ops
->startup(substream
, codec_dai
);
186 printk(KERN_ERR
"asoc: can't open codec %s\n",
192 if (machine
->ops
&& machine
->ops
->startup
) {
193 ret
= machine
->ops
->startup(substream
);
195 printk(KERN_ERR
"asoc: %s startup failed\n", machine
->name
);
200 /* Check that the codec and cpu DAI's are compatible */
201 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
202 runtime
->hw
.rate_min
=
203 max(codec_dai
->playback
.rate_min
,
204 cpu_dai
->playback
.rate_min
);
205 runtime
->hw
.rate_max
=
206 min(codec_dai
->playback
.rate_max
,
207 cpu_dai
->playback
.rate_max
);
208 runtime
->hw
.channels_min
=
209 max(codec_dai
->playback
.channels_min
,
210 cpu_dai
->playback
.channels_min
);
211 runtime
->hw
.channels_max
=
212 min(codec_dai
->playback
.channels_max
,
213 cpu_dai
->playback
.channels_max
);
214 runtime
->hw
.formats
=
215 codec_dai
->playback
.formats
& cpu_dai
->playback
.formats
;
217 codec_dai
->playback
.rates
& cpu_dai
->playback
.rates
;
219 runtime
->hw
.rate_min
=
220 max(codec_dai
->capture
.rate_min
,
221 cpu_dai
->capture
.rate_min
);
222 runtime
->hw
.rate_max
=
223 min(codec_dai
->capture
.rate_max
,
224 cpu_dai
->capture
.rate_max
);
225 runtime
->hw
.channels_min
=
226 max(codec_dai
->capture
.channels_min
,
227 cpu_dai
->capture
.channels_min
);
228 runtime
->hw
.channels_max
=
229 min(codec_dai
->capture
.channels_max
,
230 cpu_dai
->capture
.channels_max
);
231 runtime
->hw
.formats
=
232 codec_dai
->capture
.formats
& cpu_dai
->capture
.formats
;
234 codec_dai
->capture
.rates
& cpu_dai
->capture
.rates
;
237 snd_pcm_limit_hw_rates(runtime
);
238 if (!runtime
->hw
.rates
) {
239 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
240 codec_dai
->name
, cpu_dai
->name
);
243 if (!runtime
->hw
.formats
) {
244 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
245 codec_dai
->name
, cpu_dai
->name
);
248 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
) {
249 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
250 codec_dai
->name
, cpu_dai
->name
);
254 /* Symmetry only applies if we've already got an active stream. */
255 if (cpu_dai
->active
|| codec_dai
->active
) {
256 ret
= soc_pcm_apply_symmetry(substream
);
261 pr_debug("asoc: %s <-> %s info:\n", codec_dai
->name
, cpu_dai
->name
);
262 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
263 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
264 runtime
->hw
.channels_max
);
265 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
266 runtime
->hw
.rate_max
);
268 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
269 cpu_dai
->playback
.active
= codec_dai
->playback
.active
= 1;
271 cpu_dai
->capture
.active
= codec_dai
->capture
.active
= 1;
272 cpu_dai
->active
= codec_dai
->active
= 1;
273 cpu_dai
->runtime
= runtime
;
274 card
->codec
->active
++;
275 mutex_unlock(&pcm_mutex
);
279 if (machine
->ops
&& machine
->ops
->shutdown
)
280 machine
->ops
->shutdown(substream
);
283 if (platform
->pcm_ops
->close
)
284 platform
->pcm_ops
->close(substream
);
287 if (cpu_dai
->ops
->shutdown
)
288 cpu_dai
->ops
->shutdown(substream
, cpu_dai
);
290 mutex_unlock(&pcm_mutex
);
295 * Power down the audio subsystem pmdown_time msecs after close is called.
296 * This is to ensure there are no pops or clicks in between any music tracks
297 * due to DAPM power cycling.
299 static void close_delayed_work(struct work_struct
*work
)
301 struct snd_soc_card
*card
= container_of(work
, struct snd_soc_card
,
303 struct snd_soc_codec
*codec
= card
->codec
;
304 struct snd_soc_dai
*codec_dai
;
307 mutex_lock(&pcm_mutex
);
308 for (i
= 0; i
< codec
->num_dai
; i
++) {
309 codec_dai
= &codec
->dai
[i
];
311 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
312 codec_dai
->playback
.stream_name
,
313 codec_dai
->playback
.active
? "active" : "inactive",
314 codec_dai
->pop_wait
? "yes" : "no");
316 /* are we waiting on this codec DAI stream */
317 if (codec_dai
->pop_wait
== 1) {
318 codec_dai
->pop_wait
= 0;
319 snd_soc_dapm_stream_event(codec
,
320 codec_dai
->playback
.stream_name
,
321 SND_SOC_DAPM_STREAM_STOP
);
324 mutex_unlock(&pcm_mutex
);
328 * Called by ALSA when a PCM substream is closed. Private data can be
329 * freed here. The cpu DAI, codec DAI, machine and platform are also
332 static int soc_codec_close(struct snd_pcm_substream
*substream
)
334 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
335 struct snd_soc_device
*socdev
= rtd
->socdev
;
336 struct snd_soc_card
*card
= socdev
->card
;
337 struct snd_soc_dai_link
*machine
= rtd
->dai
;
338 struct snd_soc_platform
*platform
= card
->platform
;
339 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
340 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
341 struct snd_soc_codec
*codec
= card
->codec
;
343 mutex_lock(&pcm_mutex
);
345 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
346 cpu_dai
->playback
.active
= codec_dai
->playback
.active
= 0;
348 cpu_dai
->capture
.active
= codec_dai
->capture
.active
= 0;
350 if (codec_dai
->playback
.active
== 0 &&
351 codec_dai
->capture
.active
== 0) {
352 cpu_dai
->active
= codec_dai
->active
= 0;
356 /* Muting the DAC suppresses artifacts caused during digital
357 * shutdown, for example from stopping clocks.
359 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
360 snd_soc_dai_digital_mute(codec_dai
, 1);
362 if (cpu_dai
->ops
->shutdown
)
363 cpu_dai
->ops
->shutdown(substream
, cpu_dai
);
365 if (codec_dai
->ops
->shutdown
)
366 codec_dai
->ops
->shutdown(substream
, codec_dai
);
368 if (machine
->ops
&& machine
->ops
->shutdown
)
369 machine
->ops
->shutdown(substream
);
371 if (platform
->pcm_ops
->close
)
372 platform
->pcm_ops
->close(substream
);
373 cpu_dai
->runtime
= NULL
;
375 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
376 /* start delayed pop wq here for playback streams */
377 codec_dai
->pop_wait
= 1;
378 schedule_delayed_work(&card
->delayed_work
,
379 msecs_to_jiffies(pmdown_time
));
381 /* capture streams can be powered down now */
382 snd_soc_dapm_stream_event(codec
,
383 codec_dai
->capture
.stream_name
,
384 SND_SOC_DAPM_STREAM_STOP
);
387 mutex_unlock(&pcm_mutex
);
392 * Called by ALSA when the PCM substream is prepared, can set format, sample
393 * rate, etc. This function is non atomic and can be called multiple times,
394 * it can refer to the runtime info.
396 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
398 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
399 struct snd_soc_device
*socdev
= rtd
->socdev
;
400 struct snd_soc_card
*card
= socdev
->card
;
401 struct snd_soc_dai_link
*machine
= rtd
->dai
;
402 struct snd_soc_platform
*platform
= card
->platform
;
403 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
404 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
405 struct snd_soc_codec
*codec
= card
->codec
;
408 mutex_lock(&pcm_mutex
);
410 if (machine
->ops
&& machine
->ops
->prepare
) {
411 ret
= machine
->ops
->prepare(substream
);
413 printk(KERN_ERR
"asoc: machine prepare error\n");
418 if (platform
->pcm_ops
->prepare
) {
419 ret
= platform
->pcm_ops
->prepare(substream
);
421 printk(KERN_ERR
"asoc: platform prepare error\n");
426 if (codec_dai
->ops
->prepare
) {
427 ret
= codec_dai
->ops
->prepare(substream
, codec_dai
);
429 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
434 if (cpu_dai
->ops
->prepare
) {
435 ret
= cpu_dai
->ops
->prepare(substream
, cpu_dai
);
437 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
442 /* cancel any delayed stream shutdown that is pending */
443 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
444 codec_dai
->pop_wait
) {
445 codec_dai
->pop_wait
= 0;
446 cancel_delayed_work(&card
->delayed_work
);
449 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
450 snd_soc_dapm_stream_event(codec
,
451 codec_dai
->playback
.stream_name
,
452 SND_SOC_DAPM_STREAM_START
);
454 snd_soc_dapm_stream_event(codec
,
455 codec_dai
->capture
.stream_name
,
456 SND_SOC_DAPM_STREAM_START
);
458 snd_soc_dai_digital_mute(codec_dai
, 0);
461 mutex_unlock(&pcm_mutex
);
466 * Called by ALSA when the hardware params are set by application. This
467 * function can also be called multiple times and can allocate buffers
468 * (using snd_pcm_lib_* ). It's non-atomic.
470 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
471 struct snd_pcm_hw_params
*params
)
473 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
474 struct snd_soc_device
*socdev
= rtd
->socdev
;
475 struct snd_soc_dai_link
*machine
= rtd
->dai
;
476 struct snd_soc_card
*card
= socdev
->card
;
477 struct snd_soc_platform
*platform
= card
->platform
;
478 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
479 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
482 mutex_lock(&pcm_mutex
);
484 if (machine
->ops
&& machine
->ops
->hw_params
) {
485 ret
= machine
->ops
->hw_params(substream
, params
);
487 printk(KERN_ERR
"asoc: machine hw_params failed\n");
492 if (codec_dai
->ops
->hw_params
) {
493 ret
= codec_dai
->ops
->hw_params(substream
, params
, codec_dai
);
495 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
501 if (cpu_dai
->ops
->hw_params
) {
502 ret
= cpu_dai
->ops
->hw_params(substream
, params
, cpu_dai
);
504 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
510 if (platform
->pcm_ops
->hw_params
) {
511 ret
= platform
->pcm_ops
->hw_params(substream
, params
);
513 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
519 machine
->rate
= params_rate(params
);
522 mutex_unlock(&pcm_mutex
);
526 if (cpu_dai
->ops
->hw_free
)
527 cpu_dai
->ops
->hw_free(substream
, cpu_dai
);
530 if (codec_dai
->ops
->hw_free
)
531 codec_dai
->ops
->hw_free(substream
, codec_dai
);
534 if (machine
->ops
&& machine
->ops
->hw_free
)
535 machine
->ops
->hw_free(substream
);
537 mutex_unlock(&pcm_mutex
);
542 * Free's resources allocated by hw_params, can be called multiple times
544 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
546 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
547 struct snd_soc_device
*socdev
= rtd
->socdev
;
548 struct snd_soc_dai_link
*machine
= rtd
->dai
;
549 struct snd_soc_card
*card
= socdev
->card
;
550 struct snd_soc_platform
*platform
= card
->platform
;
551 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
552 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
553 struct snd_soc_codec
*codec
= card
->codec
;
555 mutex_lock(&pcm_mutex
);
557 /* apply codec digital mute */
559 snd_soc_dai_digital_mute(codec_dai
, 1);
561 /* free any machine hw params */
562 if (machine
->ops
&& machine
->ops
->hw_free
)
563 machine
->ops
->hw_free(substream
);
565 /* free any DMA resources */
566 if (platform
->pcm_ops
->hw_free
)
567 platform
->pcm_ops
->hw_free(substream
);
569 /* now free hw params for the DAI's */
570 if (codec_dai
->ops
->hw_free
)
571 codec_dai
->ops
->hw_free(substream
, codec_dai
);
573 if (cpu_dai
->ops
->hw_free
)
574 cpu_dai
->ops
->hw_free(substream
, cpu_dai
);
576 mutex_unlock(&pcm_mutex
);
580 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
582 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
583 struct snd_soc_device
*socdev
= rtd
->socdev
;
584 struct snd_soc_card
*card
= socdev
->card
;
585 struct snd_soc_dai_link
*machine
= rtd
->dai
;
586 struct snd_soc_platform
*platform
= card
->platform
;
587 struct snd_soc_dai
*cpu_dai
= machine
->cpu_dai
;
588 struct snd_soc_dai
*codec_dai
= machine
->codec_dai
;
591 if (codec_dai
->ops
->trigger
) {
592 ret
= codec_dai
->ops
->trigger(substream
, cmd
, codec_dai
);
597 if (platform
->pcm_ops
->trigger
) {
598 ret
= platform
->pcm_ops
->trigger(substream
, cmd
);
603 if (cpu_dai
->ops
->trigger
) {
604 ret
= cpu_dai
->ops
->trigger(substream
, cmd
, cpu_dai
);
611 /* ASoC PCM operations */
612 static struct snd_pcm_ops soc_pcm_ops
= {
613 .open
= soc_pcm_open
,
614 .close
= soc_codec_close
,
615 .hw_params
= soc_pcm_hw_params
,
616 .hw_free
= soc_pcm_hw_free
,
617 .prepare
= soc_pcm_prepare
,
618 .trigger
= soc_pcm_trigger
,
622 /* powers down audio subsystem for suspend */
623 static int soc_suspend(struct device
*dev
)
625 struct platform_device
*pdev
= to_platform_device(dev
);
626 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
627 struct snd_soc_card
*card
= socdev
->card
;
628 struct snd_soc_platform
*platform
= card
->platform
;
629 struct snd_soc_codec_device
*codec_dev
= socdev
->codec_dev
;
630 struct snd_soc_codec
*codec
= card
->codec
;
633 /* If the initialization of this soc device failed, there is no codec
634 * associated with it. Just bail out in this case.
639 /* Due to the resume being scheduled into a workqueue we could
640 * suspend before that's finished - wait for it to complete.
642 snd_power_lock(codec
->card
);
643 snd_power_wait(codec
->card
, SNDRV_CTL_POWER_D0
);
644 snd_power_unlock(codec
->card
);
646 /* we're going to block userspace touching us until resume completes */
647 snd_power_change_state(codec
->card
, SNDRV_CTL_POWER_D3hot
);
649 /* mute any active DAC's */
650 for (i
= 0; i
< card
->num_links
; i
++) {
651 struct snd_soc_dai
*dai
= card
->dai_link
[i
].codec_dai
;
652 if (dai
->ops
->digital_mute
&& dai
->playback
.active
)
653 dai
->ops
->digital_mute(dai
, 1);
656 /* suspend all pcms */
657 for (i
= 0; i
< card
->num_links
; i
++)
658 snd_pcm_suspend_all(card
->dai_link
[i
].pcm
);
660 if (card
->suspend_pre
)
661 card
->suspend_pre(pdev
, PMSG_SUSPEND
);
663 for (i
= 0; i
< card
->num_links
; i
++) {
664 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
665 if (cpu_dai
->suspend
&& !cpu_dai
->ac97_control
)
666 cpu_dai
->suspend(cpu_dai
);
667 if (platform
->suspend
)
668 platform
->suspend(cpu_dai
);
671 /* close any waiting streams and save state */
672 run_delayed_work(&card
->delayed_work
);
673 codec
->suspend_bias_level
= codec
->bias_level
;
675 for (i
= 0; i
< codec
->num_dai
; i
++) {
676 char *stream
= codec
->dai
[i
].playback
.stream_name
;
678 snd_soc_dapm_stream_event(codec
, stream
,
679 SND_SOC_DAPM_STREAM_SUSPEND
);
680 stream
= codec
->dai
[i
].capture
.stream_name
;
682 snd_soc_dapm_stream_event(codec
, stream
,
683 SND_SOC_DAPM_STREAM_SUSPEND
);
686 if (codec_dev
->suspend
)
687 codec_dev
->suspend(pdev
, PMSG_SUSPEND
);
689 for (i
= 0; i
< card
->num_links
; i
++) {
690 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
691 if (cpu_dai
->suspend
&& cpu_dai
->ac97_control
)
692 cpu_dai
->suspend(cpu_dai
);
695 if (card
->suspend_post
)
696 card
->suspend_post(pdev
, PMSG_SUSPEND
);
701 /* deferred resume work, so resume can complete before we finished
702 * setting our codec back up, which can be very slow on I2C
704 static void soc_resume_deferred(struct work_struct
*work
)
706 struct snd_soc_card
*card
= container_of(work
,
708 deferred_resume_work
);
709 struct snd_soc_device
*socdev
= card
->socdev
;
710 struct snd_soc_platform
*platform
= card
->platform
;
711 struct snd_soc_codec_device
*codec_dev
= socdev
->codec_dev
;
712 struct snd_soc_codec
*codec
= card
->codec
;
713 struct platform_device
*pdev
= to_platform_device(socdev
->dev
);
716 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
717 * so userspace apps are blocked from touching us
720 dev_dbg(socdev
->dev
, "starting resume work\n");
722 if (card
->resume_pre
)
723 card
->resume_pre(pdev
);
725 for (i
= 0; i
< card
->num_links
; i
++) {
726 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
727 if (cpu_dai
->resume
&& cpu_dai
->ac97_control
)
728 cpu_dai
->resume(cpu_dai
);
731 if (codec_dev
->resume
)
732 codec_dev
->resume(pdev
);
734 for (i
= 0; i
< codec
->num_dai
; i
++) {
735 char *stream
= codec
->dai
[i
].playback
.stream_name
;
737 snd_soc_dapm_stream_event(codec
, stream
,
738 SND_SOC_DAPM_STREAM_RESUME
);
739 stream
= codec
->dai
[i
].capture
.stream_name
;
741 snd_soc_dapm_stream_event(codec
, stream
,
742 SND_SOC_DAPM_STREAM_RESUME
);
745 /* unmute any active DACs */
746 for (i
= 0; i
< card
->num_links
; i
++) {
747 struct snd_soc_dai
*dai
= card
->dai_link
[i
].codec_dai
;
748 if (dai
->ops
->digital_mute
&& dai
->playback
.active
)
749 dai
->ops
->digital_mute(dai
, 0);
752 for (i
= 0; i
< card
->num_links
; i
++) {
753 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
754 if (cpu_dai
->resume
&& !cpu_dai
->ac97_control
)
755 cpu_dai
->resume(cpu_dai
);
756 if (platform
->resume
)
757 platform
->resume(cpu_dai
);
760 if (card
->resume_post
)
761 card
->resume_post(pdev
);
763 dev_dbg(socdev
->dev
, "resume work completed\n");
765 /* userspace can access us now we are back as we were before */
766 snd_power_change_state(codec
->card
, SNDRV_CTL_POWER_D0
);
769 /* powers up audio subsystem after a suspend */
770 static int soc_resume(struct device
*dev
)
772 struct platform_device
*pdev
= to_platform_device(dev
);
773 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
774 struct snd_soc_card
*card
= socdev
->card
;
775 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[0].cpu_dai
;
777 /* AC97 devices might have other drivers hanging off them so
778 * need to resume immediately. Other drivers don't have that
779 * problem and may take a substantial amount of time to resume
780 * due to I/O costs and anti-pop so handle them out of line.
782 if (cpu_dai
->ac97_control
) {
783 dev_dbg(socdev
->dev
, "Resuming AC97 immediately\n");
784 soc_resume_deferred(&card
->deferred_resume_work
);
786 dev_dbg(socdev
->dev
, "Scheduling resume work\n");
787 if (!schedule_work(&card
->deferred_resume_work
))
788 dev_err(socdev
->dev
, "resume work item may be lost\n");
795 * snd_soc_suspend_device: Notify core of device suspend
797 * @dev: Device being suspended.
799 * In order to ensure that the entire audio subsystem is suspended in a
800 * coordinated fashion ASoC devices should suspend themselves when
801 * called by ASoC. When the standard kernel suspend process asks the
802 * device to suspend it should call this function to initiate a suspend
803 * of the entire ASoC card.
805 * \note Currently this function is stubbed out.
807 int snd_soc_suspend_device(struct device
*dev
)
811 EXPORT_SYMBOL_GPL(snd_soc_suspend_device
);
814 * snd_soc_resume_device: Notify core of device resume
816 * @dev: Device being resumed.
818 * In order to ensure that the entire audio subsystem is resumed in a
819 * coordinated fashion ASoC devices should resume themselves when called
820 * by ASoC. When the standard kernel resume process asks the device
821 * to resume it should call this function. Once all the components of
822 * the card have notified that they are ready to be resumed the card
825 * \note Currently this function is stubbed out.
827 int snd_soc_resume_device(struct device
*dev
)
831 EXPORT_SYMBOL_GPL(snd_soc_resume_device
);
833 #define soc_suspend NULL
834 #define soc_resume NULL
837 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
839 struct platform_device
*pdev
= container_of(card
->dev
,
840 struct platform_device
,
842 struct snd_soc_codec_device
*codec_dev
= card
->socdev
->codec_dev
;
843 struct snd_soc_platform
*platform
;
844 struct snd_soc_dai
*dai
;
845 int i
, found
, ret
, ac97
;
847 if (card
->instantiated
)
851 list_for_each_entry(platform
, &platform_list
, list
)
852 if (card
->platform
== platform
) {
857 dev_dbg(card
->dev
, "Platform %s not registered\n",
858 card
->platform
->name
);
863 for (i
= 0; i
< card
->num_links
; i
++) {
865 list_for_each_entry(dai
, &dai_list
, list
)
866 if (card
->dai_link
[i
].cpu_dai
== dai
) {
871 dev_dbg(card
->dev
, "DAI %s not registered\n",
872 card
->dai_link
[i
].cpu_dai
->name
);
876 if (card
->dai_link
[i
].cpu_dai
->ac97_control
)
880 /* If we have AC97 in the system then don't wait for the
881 * codec. This will need revisiting if we have to handle
882 * systems with mixed AC97 and non-AC97 parts. Only check for
883 * DAIs currently; we can't do this per link since some AC97
884 * codecs have non-AC97 DAIs.
887 for (i
= 0; i
< card
->num_links
; i
++) {
889 list_for_each_entry(dai
, &dai_list
, list
)
890 if (card
->dai_link
[i
].codec_dai
== dai
) {
895 dev_dbg(card
->dev
, "DAI %s not registered\n",
896 card
->dai_link
[i
].codec_dai
->name
);
901 /* Note that we do not current check for codec components */
903 dev_dbg(card
->dev
, "All components present, instantiating\n");
905 /* Found everything, bring it up */
907 ret
= card
->probe(pdev
);
912 for (i
= 0; i
< card
->num_links
; i
++) {
913 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
914 if (cpu_dai
->probe
) {
915 ret
= cpu_dai
->probe(pdev
, cpu_dai
);
921 if (codec_dev
->probe
) {
922 ret
= codec_dev
->probe(pdev
);
927 if (platform
->probe
) {
928 ret
= platform
->probe(pdev
);
933 /* DAPM stream work */
934 INIT_DELAYED_WORK(&card
->delayed_work
, close_delayed_work
);
936 /* deferred resume work */
937 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
940 card
->instantiated
= 1;
945 if (codec_dev
->remove
)
946 codec_dev
->remove(pdev
);
949 for (i
--; i
>= 0; i
--) {
950 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
952 cpu_dai
->remove(pdev
, cpu_dai
);
960 * Attempt to initialise any uninitalised cards. Must be called with
963 static void snd_soc_instantiate_cards(void)
965 struct snd_soc_card
*card
;
966 list_for_each_entry(card
, &card_list
, list
)
967 snd_soc_instantiate_card(card
);
970 /* probes a new socdev */
971 static int soc_probe(struct platform_device
*pdev
)
974 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
975 struct snd_soc_card
*card
= socdev
->card
;
977 /* Bodge while we push things out of socdev */
978 card
->socdev
= socdev
;
980 /* Bodge while we unpick instantiation */
981 card
->dev
= &pdev
->dev
;
982 ret
= snd_soc_register_card(card
);
984 dev_err(&pdev
->dev
, "Failed to register card\n");
991 /* removes a socdev */
992 static int soc_remove(struct platform_device
*pdev
)
995 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
996 struct snd_soc_card
*card
= socdev
->card
;
997 struct snd_soc_platform
*platform
= card
->platform
;
998 struct snd_soc_codec_device
*codec_dev
= socdev
->codec_dev
;
1000 if (!card
->instantiated
)
1003 run_delayed_work(&card
->delayed_work
);
1005 if (platform
->remove
)
1006 platform
->remove(pdev
);
1008 if (codec_dev
->remove
)
1009 codec_dev
->remove(pdev
);
1011 for (i
= 0; i
< card
->num_links
; i
++) {
1012 struct snd_soc_dai
*cpu_dai
= card
->dai_link
[i
].cpu_dai
;
1013 if (cpu_dai
->remove
)
1014 cpu_dai
->remove(pdev
, cpu_dai
);
1020 snd_soc_unregister_card(card
);
1025 static int soc_poweroff(struct device
*dev
)
1027 struct platform_device
*pdev
= to_platform_device(dev
);
1028 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
1029 struct snd_soc_card
*card
= socdev
->card
;
1031 if (!card
->instantiated
)
1034 /* Flush out pmdown_time work - we actually do want to run it
1035 * now, we're shutting down so no imminent restart. */
1036 run_delayed_work(&card
->delayed_work
);
1038 snd_soc_dapm_shutdown(socdev
);
1043 static struct dev_pm_ops soc_pm_ops
= {
1044 .suspend
= soc_suspend
,
1045 .resume
= soc_resume
,
1046 .poweroff
= soc_poweroff
,
1049 /* ASoC platform driver */
1050 static struct platform_driver soc_driver
= {
1052 .name
= "soc-audio",
1053 .owner
= THIS_MODULE
,
1057 .remove
= soc_remove
,
1060 /* create a new pcm */
1061 static int soc_new_pcm(struct snd_soc_device
*socdev
,
1062 struct snd_soc_dai_link
*dai_link
, int num
)
1064 struct snd_soc_card
*card
= socdev
->card
;
1065 struct snd_soc_codec
*codec
= card
->codec
;
1066 struct snd_soc_platform
*platform
= card
->platform
;
1067 struct snd_soc_dai
*codec_dai
= dai_link
->codec_dai
;
1068 struct snd_soc_dai
*cpu_dai
= dai_link
->cpu_dai
;
1069 struct snd_soc_pcm_runtime
*rtd
;
1070 struct snd_pcm
*pcm
;
1072 int ret
= 0, playback
= 0, capture
= 0;
1074 rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
), GFP_KERNEL
);
1078 rtd
->dai
= dai_link
;
1079 rtd
->socdev
= socdev
;
1080 codec_dai
->codec
= card
->codec
;
1082 /* check client and interface hw capabilities */
1083 sprintf(new_name
, "%s %s-%d", dai_link
->stream_name
, codec_dai
->name
,
1086 if (codec_dai
->playback
.channels_min
)
1088 if (codec_dai
->capture
.channels_min
)
1091 ret
= snd_pcm_new(codec
->card
, new_name
, codec
->pcm_devs
++, playback
,
1094 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n",
1100 dai_link
->pcm
= pcm
;
1101 pcm
->private_data
= rtd
;
1102 soc_pcm_ops
.mmap
= platform
->pcm_ops
->mmap
;
1103 soc_pcm_ops
.pointer
= platform
->pcm_ops
->pointer
;
1104 soc_pcm_ops
.ioctl
= platform
->pcm_ops
->ioctl
;
1105 soc_pcm_ops
.copy
= platform
->pcm_ops
->copy
;
1106 soc_pcm_ops
.silence
= platform
->pcm_ops
->silence
;
1107 soc_pcm_ops
.ack
= platform
->pcm_ops
->ack
;
1108 soc_pcm_ops
.page
= platform
->pcm_ops
->page
;
1111 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
1114 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
1116 ret
= platform
->pcm_new(codec
->card
, codec_dai
, pcm
);
1118 printk(KERN_ERR
"asoc: platform pcm constructor failed\n");
1123 pcm
->private_free
= platform
->pcm_free
;
1124 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
1130 * snd_soc_codec_volatile_register: Report if a register is volatile.
1132 * @codec: CODEC to query.
1133 * @reg: Register to query.
1135 * Boolean function indiciating if a CODEC register is volatile.
1137 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
, int reg
)
1139 if (codec
->volatile_register
)
1140 return codec
->volatile_register(reg
);
1144 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1146 /* codec register dump */
1147 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
)
1149 int i
, step
= 1, count
= 0;
1151 if (!codec
->reg_cache_size
)
1154 if (codec
->reg_cache_step
)
1155 step
= codec
->reg_cache_step
;
1157 count
+= sprintf(buf
, "%s registers\n", codec
->name
);
1158 for (i
= 0; i
< codec
->reg_cache_size
; i
+= step
) {
1159 if (codec
->readable_register
&& !codec
->readable_register(i
))
1162 count
+= sprintf(buf
+ count
, "%2x: ", i
);
1163 if (count
>= PAGE_SIZE
- 1)
1166 if (codec
->display_register
)
1167 count
+= codec
->display_register(codec
, buf
+ count
,
1168 PAGE_SIZE
- count
, i
);
1170 count
+= snprintf(buf
+ count
, PAGE_SIZE
- count
,
1171 "%4x", codec
->read(codec
, i
));
1173 if (count
>= PAGE_SIZE
- 1)
1176 count
+= snprintf(buf
+ count
, PAGE_SIZE
- count
, "\n");
1177 if (count
>= PAGE_SIZE
- 1)
1181 /* Truncate count; min() would cause a warning */
1182 if (count
>= PAGE_SIZE
)
1183 count
= PAGE_SIZE
- 1;
1187 static ssize_t
codec_reg_show(struct device
*dev
,
1188 struct device_attribute
*attr
, char *buf
)
1190 struct snd_soc_device
*devdata
= dev_get_drvdata(dev
);
1191 return soc_codec_reg_show(devdata
->card
->codec
, buf
);
1194 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
1196 #ifdef CONFIG_DEBUG_FS
1197 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
1199 file
->private_data
= inode
->i_private
;
1203 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
1204 size_t count
, loff_t
*ppos
)
1207 struct snd_soc_codec
*codec
= file
->private_data
;
1208 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1211 ret
= soc_codec_reg_show(codec
, buf
);
1213 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1218 static ssize_t
codec_reg_write_file(struct file
*file
,
1219 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
1224 unsigned long reg
, value
;
1226 struct snd_soc_codec
*codec
= file
->private_data
;
1228 buf_size
= min(count
, (sizeof(buf
)-1));
1229 if (copy_from_user(buf
, user_buf
, buf_size
))
1233 if (codec
->reg_cache_step
)
1234 step
= codec
->reg_cache_step
;
1236 while (*start
== ' ')
1238 reg
= simple_strtoul(start
, &start
, 16);
1239 if ((reg
>= codec
->reg_cache_size
) || (reg
% step
))
1241 while (*start
== ' ')
1243 if (strict_strtoul(start
, 16, &value
))
1245 codec
->write(codec
, reg
, value
);
1249 static const struct file_operations codec_reg_fops
= {
1250 .open
= codec_reg_open_file
,
1251 .read
= codec_reg_read_file
,
1252 .write
= codec_reg_write_file
,
1255 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
1257 char codec_root
[128];
1259 snprintf(codec_root
, sizeof(codec_root
),
1260 "%s-%s", dev_name(codec
->socdev
->dev
), codec
->name
);
1262 codec
->debugfs_codec_root
= debugfs_create_dir(codec_root
,
1264 if (!codec
->debugfs_codec_root
) {
1266 "ASoC: Failed to create codec debugfs directory\n");
1270 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
1271 codec
->debugfs_codec_root
,
1272 codec
, &codec_reg_fops
);
1273 if (!codec
->debugfs_reg
)
1275 "ASoC: Failed to create codec register debugfs file\n");
1277 codec
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0744,
1278 codec
->debugfs_codec_root
,
1280 if (!codec
->debugfs_pop_time
)
1282 "Failed to create pop time debugfs file\n");
1284 codec
->debugfs_dapm
= debugfs_create_dir("dapm",
1285 codec
->debugfs_codec_root
);
1286 if (!codec
->debugfs_dapm
)
1288 "Failed to create DAPM debugfs directory\n");
1290 snd_soc_dapm_debugfs_init(codec
);
1293 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
1295 debugfs_remove_recursive(codec
->debugfs_codec_root
);
1300 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
1304 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
1310 * snd_soc_new_ac97_codec - initailise AC97 device
1311 * @codec: audio codec
1312 * @ops: AC97 bus operations
1313 * @num: AC97 codec number
1315 * Initialises AC97 codec resources for use by ad-hoc devices only.
1317 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1318 struct snd_ac97_bus_ops
*ops
, int num
)
1320 mutex_lock(&codec
->mutex
);
1322 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1323 if (codec
->ac97
== NULL
) {
1324 mutex_unlock(&codec
->mutex
);
1328 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1329 if (codec
->ac97
->bus
== NULL
) {
1332 mutex_unlock(&codec
->mutex
);
1336 codec
->ac97
->bus
->ops
= ops
;
1337 codec
->ac97
->num
= num
;
1338 mutex_unlock(&codec
->mutex
);
1341 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1344 * snd_soc_free_ac97_codec - free AC97 codec device
1345 * @codec: audio codec
1347 * Frees AC97 codec device resources.
1349 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1351 mutex_lock(&codec
->mutex
);
1352 kfree(codec
->ac97
->bus
);
1355 mutex_unlock(&codec
->mutex
);
1357 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1360 * snd_soc_update_bits - update codec register bits
1361 * @codec: audio codec
1362 * @reg: codec register
1363 * @mask: register mask
1366 * Writes new register value.
1368 * Returns 1 for change else 0.
1370 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1371 unsigned int mask
, unsigned int value
)
1374 unsigned int old
, new;
1376 mutex_lock(&io_mutex
);
1377 old
= snd_soc_read(codec
, reg
);
1378 new = (old
& ~mask
) | value
;
1379 change
= old
!= new;
1381 snd_soc_write(codec
, reg
, new);
1383 mutex_unlock(&io_mutex
);
1386 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1389 * snd_soc_test_bits - test register for change
1390 * @codec: audio codec
1391 * @reg: codec register
1392 * @mask: register mask
1395 * Tests a register with a new value and checks if the new value is
1396 * different from the old value.
1398 * Returns 1 for change else 0.
1400 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1401 unsigned int mask
, unsigned int value
)
1404 unsigned int old
, new;
1406 mutex_lock(&io_mutex
);
1407 old
= snd_soc_read(codec
, reg
);
1408 new = (old
& ~mask
) | value
;
1409 change
= old
!= new;
1410 mutex_unlock(&io_mutex
);
1414 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1417 * snd_soc_new_pcms - create new sound card and pcms
1418 * @socdev: the SoC audio device
1419 * @idx: ALSA card index
1420 * @xid: card identification
1422 * Create a new sound card based upon the codec and interface pcms.
1424 * Returns 0 for success, else error.
1426 int snd_soc_new_pcms(struct snd_soc_device
*socdev
, int idx
, const char *xid
)
1428 struct snd_soc_card
*card
= socdev
->card
;
1429 struct snd_soc_codec
*codec
= card
->codec
;
1432 mutex_lock(&codec
->mutex
);
1434 /* register a sound card */
1435 ret
= snd_card_create(idx
, xid
, codec
->owner
, 0, &codec
->card
);
1437 printk(KERN_ERR
"asoc: can't create sound card for codec %s\n",
1439 mutex_unlock(&codec
->mutex
);
1443 codec
->socdev
= socdev
;
1444 codec
->card
->dev
= socdev
->dev
;
1445 codec
->card
->private_data
= codec
;
1446 strncpy(codec
->card
->driver
, codec
->name
, sizeof(codec
->card
->driver
));
1448 /* create the pcms */
1449 for (i
= 0; i
< card
->num_links
; i
++) {
1450 ret
= soc_new_pcm(socdev
, &card
->dai_link
[i
], i
);
1452 printk(KERN_ERR
"asoc: can't create pcm %s\n",
1453 card
->dai_link
[i
].stream_name
);
1454 mutex_unlock(&codec
->mutex
);
1459 mutex_unlock(&codec
->mutex
);
1462 EXPORT_SYMBOL_GPL(snd_soc_new_pcms
);
1465 * snd_soc_init_card - register sound card
1466 * @socdev: the SoC audio device
1468 * Register a SoC sound card. Also registers an AC97 device if the
1469 * codec is AC97 for ad hoc devices.
1471 * Returns 0 for success, else error.
1473 int snd_soc_init_card(struct snd_soc_device
*socdev
)
1475 struct snd_soc_card
*card
= socdev
->card
;
1476 struct snd_soc_codec
*codec
= card
->codec
;
1477 int ret
= 0, i
, ac97
= 0, err
= 0;
1479 for (i
= 0; i
< card
->num_links
; i
++) {
1480 if (card
->dai_link
[i
].init
) {
1481 err
= card
->dai_link
[i
].init(codec
);
1483 printk(KERN_ERR
"asoc: failed to init %s\n",
1484 card
->dai_link
[i
].stream_name
);
1488 if (card
->dai_link
[i
].codec_dai
->ac97_control
) {
1490 snd_ac97_dev_add_pdata(codec
->ac97
,
1491 card
->dai_link
[i
].cpu_dai
->ac97_pdata
);
1494 snprintf(codec
->card
->shortname
, sizeof(codec
->card
->shortname
),
1496 snprintf(codec
->card
->longname
, sizeof(codec
->card
->longname
),
1497 "%s (%s)", card
->name
, codec
->name
);
1499 /* Make sure all DAPM widgets are instantiated */
1500 snd_soc_dapm_new_widgets(codec
);
1502 ret
= snd_card_register(codec
->card
);
1504 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n",
1509 mutex_lock(&codec
->mutex
);
1510 #ifdef CONFIG_SND_SOC_AC97_BUS
1511 /* Only instantiate AC97 if not already done by the adaptor
1512 * for the generic AC97 subsystem.
1514 if (ac97
&& strcmp(codec
->name
, "AC97") != 0) {
1515 ret
= soc_ac97_dev_register(codec
);
1517 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1518 snd_card_free(codec
->card
);
1519 mutex_unlock(&codec
->mutex
);
1525 err
= snd_soc_dapm_sys_add(socdev
->dev
);
1527 printk(KERN_WARNING
"asoc: failed to add dapm sysfs entries\n");
1529 err
= device_create_file(socdev
->dev
, &dev_attr_codec_reg
);
1531 printk(KERN_WARNING
"asoc: failed to add codec sysfs files\n");
1533 soc_init_codec_debugfs(codec
);
1534 mutex_unlock(&codec
->mutex
);
1539 EXPORT_SYMBOL_GPL(snd_soc_init_card
);
1542 * snd_soc_free_pcms - free sound card and pcms
1543 * @socdev: the SoC audio device
1545 * Frees sound card and pcms associated with the socdev.
1546 * Also unregister the codec if it is an AC97 device.
1548 void snd_soc_free_pcms(struct snd_soc_device
*socdev
)
1550 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
1551 #ifdef CONFIG_SND_SOC_AC97_BUS
1552 struct snd_soc_dai
*codec_dai
;
1556 mutex_lock(&codec
->mutex
);
1557 soc_cleanup_codec_debugfs(codec
);
1558 #ifdef CONFIG_SND_SOC_AC97_BUS
1559 for (i
= 0; i
< codec
->num_dai
; i
++) {
1560 codec_dai
= &codec
->dai
[i
];
1561 if (codec_dai
->ac97_control
&& codec
->ac97
&&
1562 strcmp(codec
->name
, "AC97") != 0) {
1563 soc_ac97_dev_unregister(codec
);
1571 snd_card_free(codec
->card
);
1572 device_remove_file(socdev
->dev
, &dev_attr_codec_reg
);
1573 mutex_unlock(&codec
->mutex
);
1575 EXPORT_SYMBOL_GPL(snd_soc_free_pcms
);
1578 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1579 * @substream: the pcm substream
1580 * @hw: the hardware parameters
1582 * Sets the substream runtime hardware parameters.
1584 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1585 const struct snd_pcm_hardware
*hw
)
1587 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1588 runtime
->hw
.info
= hw
->info
;
1589 runtime
->hw
.formats
= hw
->formats
;
1590 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1591 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1592 runtime
->hw
.periods_min
= hw
->periods_min
;
1593 runtime
->hw
.periods_max
= hw
->periods_max
;
1594 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1595 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1598 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1601 * snd_soc_cnew - create new control
1602 * @_template: control template
1603 * @data: control private data
1604 * @long_name: control long name
1606 * Create a new mixer control from a template control.
1608 * Returns 0 for success, else error.
1610 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1611 void *data
, char *long_name
)
1613 struct snd_kcontrol_new
template;
1615 memcpy(&template, _template
, sizeof(template));
1617 template.name
= long_name
;
1620 return snd_ctl_new1(&template, data
);
1622 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1625 * snd_soc_add_controls - add an array of controls to a codec.
1626 * Convienience function to add a list of controls. Many codecs were
1627 * duplicating this code.
1629 * @codec: codec to add controls to
1630 * @controls: array of controls to add
1631 * @num_controls: number of elements in the array
1633 * Return 0 for success, else error.
1635 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
1636 const struct snd_kcontrol_new
*controls
, int num_controls
)
1638 struct snd_card
*card
= codec
->card
;
1641 for (i
= 0; i
< num_controls
; i
++) {
1642 const struct snd_kcontrol_new
*control
= &controls
[i
];
1643 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
, NULL
));
1645 dev_err(codec
->dev
, "%s: Failed to add %s\n",
1646 codec
->name
, control
->name
);
1653 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
1656 * snd_soc_info_enum_double - enumerated double mixer info callback
1657 * @kcontrol: mixer control
1658 * @uinfo: control element information
1660 * Callback to provide information about a double enumerated
1663 * Returns 0 for success.
1665 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
1666 struct snd_ctl_elem_info
*uinfo
)
1668 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1670 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
1671 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
1672 uinfo
->value
.enumerated
.items
= e
->max
;
1674 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
1675 uinfo
->value
.enumerated
.item
= e
->max
- 1;
1676 strcpy(uinfo
->value
.enumerated
.name
,
1677 e
->texts
[uinfo
->value
.enumerated
.item
]);
1680 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
1683 * snd_soc_get_enum_double - enumerated double mixer get callback
1684 * @kcontrol: mixer control
1685 * @ucontrol: control element information
1687 * Callback to get the value of a double enumerated mixer.
1689 * Returns 0 for success.
1691 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
1692 struct snd_ctl_elem_value
*ucontrol
)
1694 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1695 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1696 unsigned int val
, bitmask
;
1698 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1700 val
= snd_soc_read(codec
, e
->reg
);
1701 ucontrol
->value
.enumerated
.item
[0]
1702 = (val
>> e
->shift_l
) & (bitmask
- 1);
1703 if (e
->shift_l
!= e
->shift_r
)
1704 ucontrol
->value
.enumerated
.item
[1] =
1705 (val
>> e
->shift_r
) & (bitmask
- 1);
1709 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
1712 * snd_soc_put_enum_double - enumerated double mixer put callback
1713 * @kcontrol: mixer control
1714 * @ucontrol: control element information
1716 * Callback to set the value of a double enumerated mixer.
1718 * Returns 0 for success.
1720 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
1721 struct snd_ctl_elem_value
*ucontrol
)
1723 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1724 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1726 unsigned int mask
, bitmask
;
1728 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1730 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
1732 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
1733 mask
= (bitmask
- 1) << e
->shift_l
;
1734 if (e
->shift_l
!= e
->shift_r
) {
1735 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
1737 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
1738 mask
|= (bitmask
- 1) << e
->shift_r
;
1741 return snd_soc_update_bits(codec
, e
->reg
, mask
, val
);
1743 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
1746 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
1747 * @kcontrol: mixer control
1748 * @ucontrol: control element information
1750 * Callback to get the value of a double semi enumerated mixer.
1752 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1753 * used for handling bitfield coded enumeration for example.
1755 * Returns 0 for success.
1757 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
1758 struct snd_ctl_elem_value
*ucontrol
)
1760 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1761 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1762 unsigned int reg_val
, val
, mux
;
1764 reg_val
= snd_soc_read(codec
, e
->reg
);
1765 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
1766 for (mux
= 0; mux
< e
->max
; mux
++) {
1767 if (val
== e
->values
[mux
])
1770 ucontrol
->value
.enumerated
.item
[0] = mux
;
1771 if (e
->shift_l
!= e
->shift_r
) {
1772 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
1773 for (mux
= 0; mux
< e
->max
; mux
++) {
1774 if (val
== e
->values
[mux
])
1777 ucontrol
->value
.enumerated
.item
[1] = mux
;
1782 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
1785 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
1786 * @kcontrol: mixer control
1787 * @ucontrol: control element information
1789 * Callback to set the value of a double semi enumerated mixer.
1791 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1792 * used for handling bitfield coded enumeration for example.
1794 * Returns 0 for success.
1796 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
1797 struct snd_ctl_elem_value
*ucontrol
)
1799 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1800 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1804 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
1806 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
1807 mask
= e
->mask
<< e
->shift_l
;
1808 if (e
->shift_l
!= e
->shift_r
) {
1809 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
1811 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
1812 mask
|= e
->mask
<< e
->shift_r
;
1815 return snd_soc_update_bits(codec
, e
->reg
, mask
, val
);
1817 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
1820 * snd_soc_info_enum_ext - external enumerated single mixer info callback
1821 * @kcontrol: mixer control
1822 * @uinfo: control element information
1824 * Callback to provide information about an external enumerated
1827 * Returns 0 for success.
1829 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
1830 struct snd_ctl_elem_info
*uinfo
)
1832 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1834 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
1836 uinfo
->value
.enumerated
.items
= e
->max
;
1838 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
1839 uinfo
->value
.enumerated
.item
= e
->max
- 1;
1840 strcpy(uinfo
->value
.enumerated
.name
,
1841 e
->texts
[uinfo
->value
.enumerated
.item
]);
1844 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
1847 * snd_soc_info_volsw_ext - external single mixer info callback
1848 * @kcontrol: mixer control
1849 * @uinfo: control element information
1851 * Callback to provide information about a single external mixer control.
1853 * Returns 0 for success.
1855 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
1856 struct snd_ctl_elem_info
*uinfo
)
1858 int max
= kcontrol
->private_value
;
1860 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
1861 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
1863 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
1866 uinfo
->value
.integer
.min
= 0;
1867 uinfo
->value
.integer
.max
= max
;
1870 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
1873 * snd_soc_info_volsw - single mixer info callback
1874 * @kcontrol: mixer control
1875 * @uinfo: control element information
1877 * Callback to provide information about a single mixer control.
1879 * Returns 0 for success.
1881 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
1882 struct snd_ctl_elem_info
*uinfo
)
1884 struct soc_mixer_control
*mc
=
1885 (struct soc_mixer_control
*)kcontrol
->private_value
;
1887 unsigned int shift
= mc
->shift
;
1888 unsigned int rshift
= mc
->rshift
;
1890 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
1891 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
1893 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
1895 uinfo
->count
= shift
== rshift
? 1 : 2;
1896 uinfo
->value
.integer
.min
= 0;
1897 uinfo
->value
.integer
.max
= max
;
1900 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
1903 * snd_soc_get_volsw - single mixer get callback
1904 * @kcontrol: mixer control
1905 * @ucontrol: control element information
1907 * Callback to get the value of a single mixer control.
1909 * Returns 0 for success.
1911 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
1912 struct snd_ctl_elem_value
*ucontrol
)
1914 struct soc_mixer_control
*mc
=
1915 (struct soc_mixer_control
*)kcontrol
->private_value
;
1916 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1917 unsigned int reg
= mc
->reg
;
1918 unsigned int shift
= mc
->shift
;
1919 unsigned int rshift
= mc
->rshift
;
1921 unsigned int mask
= (1 << fls(max
)) - 1;
1922 unsigned int invert
= mc
->invert
;
1924 ucontrol
->value
.integer
.value
[0] =
1925 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
1926 if (shift
!= rshift
)
1927 ucontrol
->value
.integer
.value
[1] =
1928 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
1930 ucontrol
->value
.integer
.value
[0] =
1931 max
- ucontrol
->value
.integer
.value
[0];
1932 if (shift
!= rshift
)
1933 ucontrol
->value
.integer
.value
[1] =
1934 max
- ucontrol
->value
.integer
.value
[1];
1939 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
1942 * snd_soc_put_volsw - single mixer put callback
1943 * @kcontrol: mixer control
1944 * @ucontrol: control element information
1946 * Callback to set the value of a single mixer control.
1948 * Returns 0 for success.
1950 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
1951 struct snd_ctl_elem_value
*ucontrol
)
1953 struct soc_mixer_control
*mc
=
1954 (struct soc_mixer_control
*)kcontrol
->private_value
;
1955 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1956 unsigned int reg
= mc
->reg
;
1957 unsigned int shift
= mc
->shift
;
1958 unsigned int rshift
= mc
->rshift
;
1960 unsigned int mask
= (1 << fls(max
)) - 1;
1961 unsigned int invert
= mc
->invert
;
1962 unsigned int val
, val2
, val_mask
;
1964 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
1967 val_mask
= mask
<< shift
;
1969 if (shift
!= rshift
) {
1970 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
1973 val_mask
|= mask
<< rshift
;
1974 val
|= val2
<< rshift
;
1976 return snd_soc_update_bits(codec
, reg
, val_mask
, val
);
1978 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
1981 * snd_soc_info_volsw_2r - double mixer info callback
1982 * @kcontrol: mixer control
1983 * @uinfo: control element information
1985 * Callback to provide information about a double mixer control that
1986 * spans 2 codec registers.
1988 * Returns 0 for success.
1990 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
1991 struct snd_ctl_elem_info
*uinfo
)
1993 struct soc_mixer_control
*mc
=
1994 (struct soc_mixer_control
*)kcontrol
->private_value
;
1997 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
1998 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2000 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2003 uinfo
->value
.integer
.min
= 0;
2004 uinfo
->value
.integer
.max
= max
;
2007 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2010 * snd_soc_get_volsw_2r - double mixer get callback
2011 * @kcontrol: mixer control
2012 * @ucontrol: control element information
2014 * Callback to get the value of a double mixer control that spans 2 registers.
2016 * Returns 0 for success.
2018 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2019 struct snd_ctl_elem_value
*ucontrol
)
2021 struct soc_mixer_control
*mc
=
2022 (struct soc_mixer_control
*)kcontrol
->private_value
;
2023 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2024 unsigned int reg
= mc
->reg
;
2025 unsigned int reg2
= mc
->rreg
;
2026 unsigned int shift
= mc
->shift
;
2028 unsigned int mask
= (1 << fls(max
)) - 1;
2029 unsigned int invert
= mc
->invert
;
2031 ucontrol
->value
.integer
.value
[0] =
2032 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2033 ucontrol
->value
.integer
.value
[1] =
2034 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2036 ucontrol
->value
.integer
.value
[0] =
2037 max
- ucontrol
->value
.integer
.value
[0];
2038 ucontrol
->value
.integer
.value
[1] =
2039 max
- ucontrol
->value
.integer
.value
[1];
2044 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2047 * snd_soc_put_volsw_2r - double mixer set callback
2048 * @kcontrol: mixer control
2049 * @ucontrol: control element information
2051 * Callback to set the value of a double mixer control that spans 2 registers.
2053 * Returns 0 for success.
2055 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2056 struct snd_ctl_elem_value
*ucontrol
)
2058 struct soc_mixer_control
*mc
=
2059 (struct soc_mixer_control
*)kcontrol
->private_value
;
2060 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2061 unsigned int reg
= mc
->reg
;
2062 unsigned int reg2
= mc
->rreg
;
2063 unsigned int shift
= mc
->shift
;
2065 unsigned int mask
= (1 << fls(max
)) - 1;
2066 unsigned int invert
= mc
->invert
;
2068 unsigned int val
, val2
, val_mask
;
2070 val_mask
= mask
<< shift
;
2071 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2072 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2080 val2
= val2
<< shift
;
2082 err
= snd_soc_update_bits(codec
, reg
, val_mask
, val
);
2086 err
= snd_soc_update_bits(codec
, reg2
, val_mask
, val2
);
2089 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2092 * snd_soc_info_volsw_s8 - signed mixer info callback
2093 * @kcontrol: mixer control
2094 * @uinfo: control element information
2096 * Callback to provide information about a signed mixer control.
2098 * Returns 0 for success.
2100 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2101 struct snd_ctl_elem_info
*uinfo
)
2103 struct soc_mixer_control
*mc
=
2104 (struct soc_mixer_control
*)kcontrol
->private_value
;
2108 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2110 uinfo
->value
.integer
.min
= 0;
2111 uinfo
->value
.integer
.max
= max
-min
;
2114 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2117 * snd_soc_get_volsw_s8 - signed mixer get callback
2118 * @kcontrol: mixer control
2119 * @ucontrol: control element information
2121 * Callback to get the value of a signed mixer control.
2123 * Returns 0 for success.
2125 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2126 struct snd_ctl_elem_value
*ucontrol
)
2128 struct soc_mixer_control
*mc
=
2129 (struct soc_mixer_control
*)kcontrol
->private_value
;
2130 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2131 unsigned int reg
= mc
->reg
;
2133 int val
= snd_soc_read(codec
, reg
);
2135 ucontrol
->value
.integer
.value
[0] =
2136 ((signed char)(val
& 0xff))-min
;
2137 ucontrol
->value
.integer
.value
[1] =
2138 ((signed char)((val
>> 8) & 0xff))-min
;
2141 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2144 * snd_soc_put_volsw_sgn - signed mixer put callback
2145 * @kcontrol: mixer control
2146 * @ucontrol: control element information
2148 * Callback to set the value of a signed mixer control.
2150 * Returns 0 for success.
2152 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2153 struct snd_ctl_elem_value
*ucontrol
)
2155 struct soc_mixer_control
*mc
=
2156 (struct soc_mixer_control
*)kcontrol
->private_value
;
2157 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2158 unsigned int reg
= mc
->reg
;
2162 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2163 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2165 return snd_soc_update_bits(codec
, reg
, 0xffff, val
);
2167 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2170 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2172 * @clk_id: DAI specific clock ID
2173 * @freq: new clock frequency in Hz
2174 * @dir: new clock direction - input/output.
2176 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2178 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2179 unsigned int freq
, int dir
)
2181 if (dai
->ops
&& dai
->ops
->set_sysclk
)
2182 return dai
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2186 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2189 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2191 * @div_id: DAI specific clock divider ID
2192 * @div: new clock divisor.
2194 * Configures the clock dividers. This is used to derive the best DAI bit and
2195 * frame clocks from the system or master clock. It's best to set the DAI bit
2196 * and frame clocks as low as possible to save system power.
2198 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2199 int div_id
, int div
)
2201 if (dai
->ops
&& dai
->ops
->set_clkdiv
)
2202 return dai
->ops
->set_clkdiv(dai
, div_id
, div
);
2206 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2209 * snd_soc_dai_set_pll - configure DAI PLL.
2211 * @pll_id: DAI specific PLL ID
2212 * @source: DAI specific source for the PLL
2213 * @freq_in: PLL input clock frequency in Hz
2214 * @freq_out: requested PLL output clock frequency in Hz
2216 * Configures and enables PLL to generate output clock based on input clock.
2218 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2219 unsigned int freq_in
, unsigned int freq_out
)
2221 if (dai
->ops
&& dai
->ops
->set_pll
)
2222 return dai
->ops
->set_pll(dai
, pll_id
, source
,
2227 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2230 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2232 * @fmt: SND_SOC_DAIFMT_ format value.
2234 * Configures the DAI hardware format and clocking.
2236 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2238 if (dai
->ops
&& dai
->ops
->set_fmt
)
2239 return dai
->ops
->set_fmt(dai
, fmt
);
2243 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2246 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2248 * @tx_mask: bitmask representing active TX slots.
2249 * @rx_mask: bitmask representing active RX slots.
2250 * @slots: Number of slots in use.
2251 * @slot_width: Width in bits for each slot.
2253 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2256 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2257 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2259 if (dai
->ops
&& dai
->ops
->set_tdm_slot
)
2260 return dai
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2265 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2268 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2270 * @tx_num: how many TX channels
2271 * @tx_slot: pointer to an array which imply the TX slot number channel
2273 * @rx_num: how many RX channels
2274 * @rx_slot: pointer to an array which imply the RX slot number channel
2277 * configure the relationship between channel number and TDM slot number.
2279 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2280 unsigned int tx_num
, unsigned int *tx_slot
,
2281 unsigned int rx_num
, unsigned int *rx_slot
)
2283 if (dai
->ops
&& dai
->ops
->set_channel_map
)
2284 return dai
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2289 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2292 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2294 * @tristate: tristate enable
2296 * Tristates the DAI so that others can use it.
2298 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2300 if (dai
->ops
&& dai
->ops
->set_tristate
)
2301 return dai
->ops
->set_tristate(dai
, tristate
);
2305 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2308 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2310 * @mute: mute enable
2312 * Mutes the DAI DAC.
2314 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2316 if (dai
->ops
&& dai
->ops
->digital_mute
)
2317 return dai
->ops
->digital_mute(dai
, mute
);
2321 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2324 * snd_soc_register_card - Register a card with the ASoC core
2326 * @card: Card to register
2328 * Note that currently this is an internal only function: it will be
2329 * exposed to machine drivers after further backporting of ASoC v2
2330 * registration APIs.
2332 static int snd_soc_register_card(struct snd_soc_card
*card
)
2334 if (!card
->name
|| !card
->dev
)
2337 INIT_LIST_HEAD(&card
->list
);
2338 card
->instantiated
= 0;
2340 mutex_lock(&client_mutex
);
2341 list_add(&card
->list
, &card_list
);
2342 snd_soc_instantiate_cards();
2343 mutex_unlock(&client_mutex
);
2345 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2351 * snd_soc_unregister_card - Unregister a card with the ASoC core
2353 * @card: Card to unregister
2355 * Note that currently this is an internal only function: it will be
2356 * exposed to machine drivers after further backporting of ASoC v2
2357 * registration APIs.
2359 static int snd_soc_unregister_card(struct snd_soc_card
*card
)
2361 mutex_lock(&client_mutex
);
2362 list_del(&card
->list
);
2363 mutex_unlock(&client_mutex
);
2365 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2370 static struct snd_soc_dai_ops null_dai_ops
= {
2374 * snd_soc_register_dai - Register a DAI with the ASoC core
2376 * @dai: DAI to register
2378 int snd_soc_register_dai(struct snd_soc_dai
*dai
)
2383 /* The device should become mandatory over time */
2385 printk(KERN_WARNING
"No device for DAI %s\n", dai
->name
);
2388 dai
->ops
= &null_dai_ops
;
2390 INIT_LIST_HEAD(&dai
->list
);
2392 mutex_lock(&client_mutex
);
2393 list_add(&dai
->list
, &dai_list
);
2394 snd_soc_instantiate_cards();
2395 mutex_unlock(&client_mutex
);
2397 pr_debug("Registered DAI '%s'\n", dai
->name
);
2401 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
2404 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
2406 * @dai: DAI to unregister
2408 void snd_soc_unregister_dai(struct snd_soc_dai
*dai
)
2410 mutex_lock(&client_mutex
);
2411 list_del(&dai
->list
);
2412 mutex_unlock(&client_mutex
);
2414 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
2416 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
2419 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
2421 * @dai: Array of DAIs to register
2422 * @count: Number of DAIs
2424 int snd_soc_register_dais(struct snd_soc_dai
*dai
, size_t count
)
2428 for (i
= 0; i
< count
; i
++) {
2429 ret
= snd_soc_register_dai(&dai
[i
]);
2437 for (i
--; i
>= 0; i
--)
2438 snd_soc_unregister_dai(&dai
[i
]);
2442 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
2445 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
2447 * @dai: Array of DAIs to unregister
2448 * @count: Number of DAIs
2450 void snd_soc_unregister_dais(struct snd_soc_dai
*dai
, size_t count
)
2454 for (i
= 0; i
< count
; i
++)
2455 snd_soc_unregister_dai(&dai
[i
]);
2457 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
2460 * snd_soc_register_platform - Register a platform with the ASoC core
2462 * @platform: platform to register
2464 int snd_soc_register_platform(struct snd_soc_platform
*platform
)
2466 if (!platform
->name
)
2469 INIT_LIST_HEAD(&platform
->list
);
2471 mutex_lock(&client_mutex
);
2472 list_add(&platform
->list
, &platform_list
);
2473 snd_soc_instantiate_cards();
2474 mutex_unlock(&client_mutex
);
2476 pr_debug("Registered platform '%s'\n", platform
->name
);
2480 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
2483 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2485 * @platform: platform to unregister
2487 void snd_soc_unregister_platform(struct snd_soc_platform
*platform
)
2489 mutex_lock(&client_mutex
);
2490 list_del(&platform
->list
);
2491 mutex_unlock(&client_mutex
);
2493 pr_debug("Unregistered platform '%s'\n", platform
->name
);
2495 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
2497 static u64 codec_format_map
[] = {
2498 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
2499 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
2500 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
2501 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
2502 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
2503 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
2504 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2505 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2506 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
2507 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
2508 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
2509 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
2510 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
2511 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
2512 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2513 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
2516 /* Fix up the DAI formats for endianness: codecs don't actually see
2517 * the endianness of the data but we're using the CPU format
2518 * definitions which do need to include endianness so we ensure that
2519 * codec DAIs always have both big and little endian variants set.
2521 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
2525 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
2526 if (stream
->formats
& codec_format_map
[i
])
2527 stream
->formats
|= codec_format_map
[i
];
2531 * snd_soc_register_codec - Register a codec with the ASoC core
2533 * @codec: codec to register
2535 int snd_soc_register_codec(struct snd_soc_codec
*codec
)
2542 /* The device should become mandatory over time */
2544 printk(KERN_WARNING
"No device for codec %s\n", codec
->name
);
2546 INIT_LIST_HEAD(&codec
->list
);
2548 for (i
= 0; i
< codec
->num_dai
; i
++) {
2549 fixup_codec_formats(&codec
->dai
[i
].playback
);
2550 fixup_codec_formats(&codec
->dai
[i
].capture
);
2553 mutex_lock(&client_mutex
);
2554 list_add(&codec
->list
, &codec_list
);
2555 snd_soc_instantiate_cards();
2556 mutex_unlock(&client_mutex
);
2558 pr_debug("Registered codec '%s'\n", codec
->name
);
2562 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
2565 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
2567 * @codec: codec to unregister
2569 void snd_soc_unregister_codec(struct snd_soc_codec
*codec
)
2571 mutex_lock(&client_mutex
);
2572 list_del(&codec
->list
);
2573 mutex_unlock(&client_mutex
);
2575 pr_debug("Unregistered codec '%s'\n", codec
->name
);
2577 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
2579 static int __init
snd_soc_init(void)
2581 #ifdef CONFIG_DEBUG_FS
2582 debugfs_root
= debugfs_create_dir("asoc", NULL
);
2583 if (IS_ERR(debugfs_root
) || !debugfs_root
) {
2585 "ASoC: Failed to create debugfs directory\n");
2586 debugfs_root
= NULL
;
2590 return platform_driver_register(&soc_driver
);
2593 static void __exit
snd_soc_exit(void)
2595 #ifdef CONFIG_DEBUG_FS
2596 debugfs_remove_recursive(debugfs_root
);
2598 platform_driver_unregister(&soc_driver
);
2601 module_init(snd_soc_init
);
2602 module_exit(snd_soc_exit
);
2604 /* Module information */
2605 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2606 MODULE_DESCRIPTION("ALSA SoC Core");
2607 MODULE_LICENSE("GPL");
2608 MODULE_ALIAS("platform:soc-audio");