2 * soc-core.c -- ALSA SoC Audio Layer
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 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/slab.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/initval.h>
41 #define CREATE_TRACE_POINTS
42 #include <trace/events/asoc.h>
46 static DEFINE_MUTEX(pcm_mutex
);
47 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
49 #ifdef CONFIG_DEBUG_FS
50 static struct dentry
*debugfs_root
;
53 static DEFINE_MUTEX(client_mutex
);
54 static LIST_HEAD(card_list
);
55 static LIST_HEAD(dai_list
);
56 static LIST_HEAD(platform_list
);
57 static LIST_HEAD(codec_list
);
59 static int snd_soc_register_card(struct snd_soc_card
*card
);
60 static int snd_soc_unregister_card(struct snd_soc_card
*card
);
61 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
73 * This function forces any delayed work to be queued and run.
75 static int run_delayed_work(struct delayed_work
*dwork
)
79 /* cancel any work waiting to be queued. */
80 ret
= cancel_delayed_work(dwork
);
82 /* if there was any work waiting then we run it now and
83 * wait for it's completion */
85 schedule_delayed_work(dwork
, 0);
86 flush_scheduled_work();
91 /* codec register dump */
92 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
)
94 int ret
, i
, step
= 1, count
= 0;
96 if (!codec
->driver
->reg_cache_size
)
99 if (codec
->driver
->reg_cache_step
)
100 step
= codec
->driver
->reg_cache_step
;
102 count
+= sprintf(buf
, "%s registers\n", codec
->name
);
103 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
104 if (codec
->driver
->readable_register
&& !codec
->driver
->readable_register(i
))
107 count
+= sprintf(buf
+ count
, "%2x: ", i
);
108 if (count
>= PAGE_SIZE
- 1)
111 if (codec
->driver
->display_register
) {
112 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
113 PAGE_SIZE
- count
, i
);
115 /* If the read fails it's almost certainly due to
116 * the register being volatile and the device being
119 ret
= codec
->driver
->read(codec
, i
);
121 count
+= snprintf(buf
+ count
,
125 count
+= snprintf(buf
+ count
,
127 "<no data: %d>", ret
);
130 if (count
>= PAGE_SIZE
- 1)
133 count
+= snprintf(buf
+ count
, PAGE_SIZE
- count
, "\n");
134 if (count
>= PAGE_SIZE
- 1)
138 /* Truncate count; min() would cause a warning */
139 if (count
>= PAGE_SIZE
)
140 count
= PAGE_SIZE
- 1;
144 static ssize_t
codec_reg_show(struct device
*dev
,
145 struct device_attribute
*attr
, char *buf
)
147 struct snd_soc_pcm_runtime
*rtd
=
148 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
150 return soc_codec_reg_show(rtd
->codec
, buf
);
153 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
155 static ssize_t
pmdown_time_show(struct device
*dev
,
156 struct device_attribute
*attr
, char *buf
)
158 struct snd_soc_pcm_runtime
*rtd
=
159 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
161 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
164 static ssize_t
pmdown_time_set(struct device
*dev
,
165 struct device_attribute
*attr
,
166 const char *buf
, size_t count
)
168 struct snd_soc_pcm_runtime
*rtd
=
169 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
172 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
179 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
181 #ifdef CONFIG_DEBUG_FS
182 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
184 file
->private_data
= inode
->i_private
;
188 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
189 size_t count
, loff_t
*ppos
)
192 struct snd_soc_codec
*codec
= file
->private_data
;
193 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
196 ret
= soc_codec_reg_show(codec
, buf
);
198 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
203 static ssize_t
codec_reg_write_file(struct file
*file
,
204 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
209 unsigned long reg
, value
;
211 struct snd_soc_codec
*codec
= file
->private_data
;
213 buf_size
= min(count
, (sizeof(buf
)-1));
214 if (copy_from_user(buf
, user_buf
, buf_size
))
218 if (codec
->driver
->reg_cache_step
)
219 step
= codec
->driver
->reg_cache_step
;
221 while (*start
== ' ')
223 reg
= simple_strtoul(start
, &start
, 16);
224 if ((reg
>= codec
->driver
->reg_cache_size
) || (reg
% step
))
226 while (*start
== ' ')
228 if (strict_strtoul(start
, 16, &value
))
230 codec
->driver
->write(codec
, reg
, value
);
234 static const struct file_operations codec_reg_fops
= {
235 .open
= codec_reg_open_file
,
236 .read
= codec_reg_read_file
,
237 .write
= codec_reg_write_file
,
238 .llseek
= default_llseek
,
241 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
243 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
245 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
247 if (!codec
->debugfs_codec_root
) {
249 "ASoC: Failed to create codec debugfs directory\n");
253 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
254 codec
->debugfs_codec_root
,
255 codec
, &codec_reg_fops
);
256 if (!codec
->debugfs_reg
)
258 "ASoC: Failed to create codec register debugfs file\n");
260 codec
->dapm
.debugfs_dapm
= debugfs_create_dir("dapm",
261 codec
->debugfs_codec_root
);
262 if (!codec
->dapm
.debugfs_dapm
)
264 "Failed to create DAPM debugfs directory\n");
266 snd_soc_dapm_debugfs_init(&codec
->dapm
);
269 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
271 debugfs_remove_recursive(codec
->debugfs_codec_root
);
274 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
275 size_t count
, loff_t
*ppos
)
277 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
278 ssize_t len
, ret
= 0;
279 struct snd_soc_codec
*codec
;
284 list_for_each_entry(codec
, &codec_list
, list
) {
285 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
289 if (ret
> PAGE_SIZE
) {
296 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
303 static const struct file_operations codec_list_fops
= {
304 .read
= codec_list_read_file
,
305 .llseek
= default_llseek
,/* read accesses f_pos */
308 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
309 size_t count
, loff_t
*ppos
)
311 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
312 ssize_t len
, ret
= 0;
313 struct snd_soc_dai
*dai
;
318 list_for_each_entry(dai
, &dai_list
, list
) {
319 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
322 if (ret
> PAGE_SIZE
) {
328 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
335 static const struct file_operations dai_list_fops
= {
336 .read
= dai_list_read_file
,
337 .llseek
= default_llseek
,/* read accesses f_pos */
340 static ssize_t
platform_list_read_file(struct file
*file
,
341 char __user
*user_buf
,
342 size_t count
, loff_t
*ppos
)
344 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
345 ssize_t len
, ret
= 0;
346 struct snd_soc_platform
*platform
;
351 list_for_each_entry(platform
, &platform_list
, list
) {
352 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
356 if (ret
> PAGE_SIZE
) {
362 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
369 static const struct file_operations platform_list_fops
= {
370 .read
= platform_list_read_file
,
371 .llseek
= default_llseek
,/* read accesses f_pos */
374 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
376 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
378 if (!card
->debugfs_card_root
) {
380 "ASoC: Failed to create codec debugfs directory\n");
384 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
385 card
->debugfs_card_root
,
387 if (!card
->debugfs_pop_time
)
389 "Failed to create pop time debugfs file\n");
392 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
394 debugfs_remove_recursive(card
->debugfs_card_root
);
399 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
403 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
407 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
411 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
416 #ifdef CONFIG_SND_SOC_AC97_BUS
417 /* unregister ac97 codec */
418 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
420 if (codec
->ac97
->dev
.bus
)
421 device_unregister(&codec
->ac97
->dev
);
425 /* stop no dev release warning */
426 static void soc_ac97_device_release(struct device
*dev
){}
428 /* register ac97 codec to bus */
429 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
433 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
434 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
435 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
437 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
438 codec
->card
->snd_card
->number
, 0, codec
->name
);
439 err
= device_register(&codec
->ac97
->dev
);
441 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
442 codec
->ac97
->dev
.bus
= NULL
;
449 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
451 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
452 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
453 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
456 if (codec_dai
->driver
->symmetric_rates
|| cpu_dai
->driver
->symmetric_rates
||
457 rtd
->dai_link
->symmetric_rates
) {
458 dev_dbg(&rtd
->dev
, "Symmetry forces %dHz rate\n",
461 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
462 SNDRV_PCM_HW_PARAM_RATE
,
467 "Unable to apply rate symmetry constraint: %d\n", ret
);
476 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
477 * then initialized and any private data can be allocated. This also calls
478 * startup for the cpu DAI, platform, machine and codec DAI.
480 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
482 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
483 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
484 struct snd_soc_platform
*platform
= rtd
->platform
;
485 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
486 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
487 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
488 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
491 mutex_lock(&pcm_mutex
);
493 /* startup the audio subsystem */
494 if (cpu_dai
->driver
->ops
->startup
) {
495 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
497 printk(KERN_ERR
"asoc: can't open interface %s\n",
503 if (platform
->driver
->ops
->open
) {
504 ret
= platform
->driver
->ops
->open(substream
);
506 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
511 if (codec_dai
->driver
->ops
->startup
) {
512 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
514 printk(KERN_ERR
"asoc: can't open codec %s\n",
520 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
521 ret
= rtd
->dai_link
->ops
->startup(substream
);
523 printk(KERN_ERR
"asoc: %s startup failed\n", rtd
->dai_link
->name
);
528 /* Check that the codec and cpu DAI's are compatible */
529 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
530 runtime
->hw
.rate_min
=
531 max(codec_dai_drv
->playback
.rate_min
,
532 cpu_dai_drv
->playback
.rate_min
);
533 runtime
->hw
.rate_max
=
534 min(codec_dai_drv
->playback
.rate_max
,
535 cpu_dai_drv
->playback
.rate_max
);
536 runtime
->hw
.channels_min
=
537 max(codec_dai_drv
->playback
.channels_min
,
538 cpu_dai_drv
->playback
.channels_min
);
539 runtime
->hw
.channels_max
=
540 min(codec_dai_drv
->playback
.channels_max
,
541 cpu_dai_drv
->playback
.channels_max
);
542 runtime
->hw
.formats
=
543 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
545 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
546 if (codec_dai_drv
->playback
.rates
547 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
548 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
549 if (cpu_dai_drv
->playback
.rates
550 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
551 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
553 runtime
->hw
.rate_min
=
554 max(codec_dai_drv
->capture
.rate_min
,
555 cpu_dai_drv
->capture
.rate_min
);
556 runtime
->hw
.rate_max
=
557 min(codec_dai_drv
->capture
.rate_max
,
558 cpu_dai_drv
->capture
.rate_max
);
559 runtime
->hw
.channels_min
=
560 max(codec_dai_drv
->capture
.channels_min
,
561 cpu_dai_drv
->capture
.channels_min
);
562 runtime
->hw
.channels_max
=
563 min(codec_dai_drv
->capture
.channels_max
,
564 cpu_dai_drv
->capture
.channels_max
);
565 runtime
->hw
.formats
=
566 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
568 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
569 if (codec_dai_drv
->capture
.rates
570 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
571 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
572 if (cpu_dai_drv
->capture
.rates
573 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
574 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
577 snd_pcm_limit_hw_rates(runtime
);
578 if (!runtime
->hw
.rates
) {
579 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
580 codec_dai
->name
, cpu_dai
->name
);
583 if (!runtime
->hw
.formats
) {
584 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
585 codec_dai
->name
, cpu_dai
->name
);
588 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
) {
589 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
590 codec_dai
->name
, cpu_dai
->name
);
594 /* Symmetry only applies if we've already got an active stream. */
595 if (cpu_dai
->active
|| codec_dai
->active
) {
596 ret
= soc_pcm_apply_symmetry(substream
);
601 pr_debug("asoc: %s <-> %s info:\n",
602 codec_dai
->name
, cpu_dai
->name
);
603 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
604 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
605 runtime
->hw
.channels_max
);
606 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
607 runtime
->hw
.rate_max
);
609 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
610 cpu_dai
->playback_active
++;
611 codec_dai
->playback_active
++;
613 cpu_dai
->capture_active
++;
614 codec_dai
->capture_active
++;
618 rtd
->codec
->active
++;
619 mutex_unlock(&pcm_mutex
);
623 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
624 rtd
->dai_link
->ops
->shutdown(substream
);
627 if (codec_dai
->driver
->ops
->shutdown
)
628 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
631 if (platform
->driver
->ops
->close
)
632 platform
->driver
->ops
->close(substream
);
635 if (cpu_dai
->driver
->ops
->shutdown
)
636 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
638 mutex_unlock(&pcm_mutex
);
643 * Power down the audio subsystem pmdown_time msecs after close is called.
644 * This is to ensure there are no pops or clicks in between any music tracks
645 * due to DAPM power cycling.
647 static void close_delayed_work(struct work_struct
*work
)
649 struct snd_soc_pcm_runtime
*rtd
=
650 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
651 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
653 mutex_lock(&pcm_mutex
);
655 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
656 codec_dai
->driver
->playback
.stream_name
,
657 codec_dai
->playback_active
? "active" : "inactive",
658 codec_dai
->pop_wait
? "yes" : "no");
660 /* are we waiting on this codec DAI stream */
661 if (codec_dai
->pop_wait
== 1) {
662 codec_dai
->pop_wait
= 0;
663 snd_soc_dapm_stream_event(rtd
,
664 codec_dai
->driver
->playback
.stream_name
,
665 SND_SOC_DAPM_STREAM_STOP
);
668 mutex_unlock(&pcm_mutex
);
672 * Called by ALSA when a PCM substream is closed. Private data can be
673 * freed here. The cpu DAI, codec DAI, machine and platform are also
676 static int soc_codec_close(struct snd_pcm_substream
*substream
)
678 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
679 struct snd_soc_platform
*platform
= rtd
->platform
;
680 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
681 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
682 struct snd_soc_codec
*codec
= rtd
->codec
;
684 mutex_lock(&pcm_mutex
);
686 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
687 cpu_dai
->playback_active
--;
688 codec_dai
->playback_active
--;
690 cpu_dai
->capture_active
--;
691 codec_dai
->capture_active
--;
698 /* Muting the DAC suppresses artifacts caused during digital
699 * shutdown, for example from stopping clocks.
701 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
702 snd_soc_dai_digital_mute(codec_dai
, 1);
704 if (cpu_dai
->driver
->ops
->shutdown
)
705 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
707 if (codec_dai
->driver
->ops
->shutdown
)
708 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
710 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
711 rtd
->dai_link
->ops
->shutdown(substream
);
713 if (platform
->driver
->ops
->close
)
714 platform
->driver
->ops
->close(substream
);
715 cpu_dai
->runtime
= NULL
;
717 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
718 /* start delayed pop wq here for playback streams */
719 codec_dai
->pop_wait
= 1;
720 schedule_delayed_work(&rtd
->delayed_work
,
721 msecs_to_jiffies(rtd
->pmdown_time
));
723 /* capture streams can be powered down now */
724 snd_soc_dapm_stream_event(rtd
,
725 codec_dai
->driver
->capture
.stream_name
,
726 SND_SOC_DAPM_STREAM_STOP
);
729 mutex_unlock(&pcm_mutex
);
734 * Called by ALSA when the PCM substream is prepared, can set format, sample
735 * rate, etc. This function is non atomic and can be called multiple times,
736 * it can refer to the runtime info.
738 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
740 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
741 struct snd_soc_platform
*platform
= rtd
->platform
;
742 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
743 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
746 mutex_lock(&pcm_mutex
);
748 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
749 ret
= rtd
->dai_link
->ops
->prepare(substream
);
751 printk(KERN_ERR
"asoc: machine prepare error\n");
756 if (platform
->driver
->ops
->prepare
) {
757 ret
= platform
->driver
->ops
->prepare(substream
);
759 printk(KERN_ERR
"asoc: platform prepare error\n");
764 if (codec_dai
->driver
->ops
->prepare
) {
765 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
767 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
772 if (cpu_dai
->driver
->ops
->prepare
) {
773 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
775 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
780 /* cancel any delayed stream shutdown that is pending */
781 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
782 codec_dai
->pop_wait
) {
783 codec_dai
->pop_wait
= 0;
784 cancel_delayed_work(&rtd
->delayed_work
);
787 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
788 snd_soc_dapm_stream_event(rtd
,
789 codec_dai
->driver
->playback
.stream_name
,
790 SND_SOC_DAPM_STREAM_START
);
792 snd_soc_dapm_stream_event(rtd
,
793 codec_dai
->driver
->capture
.stream_name
,
794 SND_SOC_DAPM_STREAM_START
);
796 snd_soc_dai_digital_mute(codec_dai
, 0);
799 mutex_unlock(&pcm_mutex
);
804 * Called by ALSA when the hardware params are set by application. This
805 * function can also be called multiple times and can allocate buffers
806 * (using snd_pcm_lib_* ). It's non-atomic.
808 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
809 struct snd_pcm_hw_params
*params
)
811 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
812 struct snd_soc_platform
*platform
= rtd
->platform
;
813 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
814 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
817 mutex_lock(&pcm_mutex
);
819 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
820 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
822 printk(KERN_ERR
"asoc: machine hw_params failed\n");
827 if (codec_dai
->driver
->ops
->hw_params
) {
828 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
830 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
836 if (cpu_dai
->driver
->ops
->hw_params
) {
837 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
839 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
845 if (platform
->driver
->ops
->hw_params
) {
846 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
848 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
854 rtd
->rate
= params_rate(params
);
857 mutex_unlock(&pcm_mutex
);
861 if (cpu_dai
->driver
->ops
->hw_free
)
862 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
865 if (codec_dai
->driver
->ops
->hw_free
)
866 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
869 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
870 rtd
->dai_link
->ops
->hw_free(substream
);
872 mutex_unlock(&pcm_mutex
);
877 * Free's resources allocated by hw_params, can be called multiple times
879 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
881 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
882 struct snd_soc_platform
*platform
= rtd
->platform
;
883 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
884 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
885 struct snd_soc_codec
*codec
= rtd
->codec
;
887 mutex_lock(&pcm_mutex
);
889 /* apply codec digital mute */
891 snd_soc_dai_digital_mute(codec_dai
, 1);
893 /* free any machine hw params */
894 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
895 rtd
->dai_link
->ops
->hw_free(substream
);
897 /* free any DMA resources */
898 if (platform
->driver
->ops
->hw_free
)
899 platform
->driver
->ops
->hw_free(substream
);
901 /* now free hw params for the DAI's */
902 if (codec_dai
->driver
->ops
->hw_free
)
903 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
905 if (cpu_dai
->driver
->ops
->hw_free
)
906 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
908 mutex_unlock(&pcm_mutex
);
912 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
914 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
915 struct snd_soc_platform
*platform
= rtd
->platform
;
916 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
917 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
920 if (codec_dai
->driver
->ops
->trigger
) {
921 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
926 if (platform
->driver
->ops
->trigger
) {
927 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
932 if (cpu_dai
->driver
->ops
->trigger
) {
933 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
941 * soc level wrapper for pointer callback
942 * If cpu_dai, codec_dai, platform driver has the delay callback, than
943 * the runtime->delay will be updated accordingly.
945 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
947 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
948 struct snd_soc_platform
*platform
= rtd
->platform
;
949 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
950 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
951 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
952 snd_pcm_uframes_t offset
= 0;
953 snd_pcm_sframes_t delay
= 0;
955 if (platform
->driver
->ops
->pointer
)
956 offset
= platform
->driver
->ops
->pointer(substream
);
958 if (cpu_dai
->driver
->ops
->delay
)
959 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
961 if (codec_dai
->driver
->ops
->delay
)
962 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
964 if (platform
->driver
->delay
)
965 delay
+= platform
->driver
->delay(substream
, codec_dai
);
967 runtime
->delay
= delay
;
972 /* ASoC PCM operations */
973 static struct snd_pcm_ops soc_pcm_ops
= {
974 .open
= soc_pcm_open
,
975 .close
= soc_codec_close
,
976 .hw_params
= soc_pcm_hw_params
,
977 .hw_free
= soc_pcm_hw_free
,
978 .prepare
= soc_pcm_prepare
,
979 .trigger
= soc_pcm_trigger
,
980 .pointer
= soc_pcm_pointer
,
984 /* powers down audio subsystem for suspend */
985 static int soc_suspend(struct device
*dev
)
987 struct platform_device
*pdev
= to_platform_device(dev
);
988 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
989 struct snd_soc_codec
*codec
;
992 /* If the initialization of this soc device failed, there is no codec
993 * associated with it. Just bail out in this case.
995 if (list_empty(&card
->codec_dev_list
))
998 /* Due to the resume being scheduled into a workqueue we could
999 * suspend before that's finished - wait for it to complete.
1001 snd_power_lock(card
->snd_card
);
1002 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1003 snd_power_unlock(card
->snd_card
);
1005 /* we're going to block userspace touching us until resume completes */
1006 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
1008 /* mute any active DAC's */
1009 for (i
= 0; i
< card
->num_rtd
; i
++) {
1010 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1011 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1013 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1016 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1017 drv
->ops
->digital_mute(dai
, 1);
1020 /* suspend all pcms */
1021 for (i
= 0; i
< card
->num_rtd
; i
++) {
1022 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1025 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
1028 if (card
->suspend_pre
)
1029 card
->suspend_pre(pdev
, PMSG_SUSPEND
);
1031 for (i
= 0; i
< card
->num_rtd
; i
++) {
1032 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1033 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1035 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1038 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
1039 cpu_dai
->driver
->suspend(cpu_dai
);
1040 if (platform
->driver
->suspend
&& !platform
->suspended
) {
1041 platform
->driver
->suspend(cpu_dai
);
1042 platform
->suspended
= 1;
1046 /* close any waiting streams and save state */
1047 for (i
= 0; i
< card
->num_rtd
; i
++) {
1048 run_delayed_work(&card
->rtd
[i
].delayed_work
);
1049 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
1052 for (i
= 0; i
< card
->num_rtd
; i
++) {
1053 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1055 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1058 if (driver
->playback
.stream_name
!= NULL
)
1059 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1060 SND_SOC_DAPM_STREAM_SUSPEND
);
1062 if (driver
->capture
.stream_name
!= NULL
)
1063 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1064 SND_SOC_DAPM_STREAM_SUSPEND
);
1067 /* suspend all CODECs */
1068 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
1069 /* If there are paths active then the CODEC will be held with
1070 * bias _ON and should not be suspended. */
1071 if (!codec
->suspended
&& codec
->driver
->suspend
) {
1072 switch (codec
->dapm
.bias_level
) {
1073 case SND_SOC_BIAS_STANDBY
:
1074 case SND_SOC_BIAS_OFF
:
1075 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
1076 codec
->suspended
= 1;
1079 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
1085 for (i
= 0; i
< card
->num_rtd
; i
++) {
1086 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1088 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1091 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
1092 cpu_dai
->driver
->suspend(cpu_dai
);
1095 if (card
->suspend_post
)
1096 card
->suspend_post(pdev
, PMSG_SUSPEND
);
1101 /* deferred resume work, so resume can complete before we finished
1102 * setting our codec back up, which can be very slow on I2C
1104 static void soc_resume_deferred(struct work_struct
*work
)
1106 struct snd_soc_card
*card
=
1107 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
1108 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1109 struct snd_soc_codec
*codec
;
1112 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1113 * so userspace apps are blocked from touching us
1116 dev_dbg(card
->dev
, "starting resume work\n");
1118 /* Bring us up into D2 so that DAPM starts enabling things */
1119 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
1121 if (card
->resume_pre
)
1122 card
->resume_pre(pdev
);
1124 /* resume AC97 DAIs */
1125 for (i
= 0; i
< card
->num_rtd
; i
++) {
1126 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1128 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1131 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1132 cpu_dai
->driver
->resume(cpu_dai
);
1135 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
1136 /* If the CODEC was idle over suspend then it will have been
1137 * left with bias OFF or STANDBY and suspended so we must now
1138 * resume. Otherwise the suspend was suppressed.
1140 if (codec
->driver
->resume
&& codec
->suspended
) {
1141 switch (codec
->dapm
.bias_level
) {
1142 case SND_SOC_BIAS_STANDBY
:
1143 case SND_SOC_BIAS_OFF
:
1144 codec
->driver
->resume(codec
);
1145 codec
->suspended
= 0;
1148 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1154 for (i
= 0; i
< card
->num_rtd
; i
++) {
1155 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1157 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1160 if (driver
->playback
.stream_name
!= NULL
)
1161 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1162 SND_SOC_DAPM_STREAM_RESUME
);
1164 if (driver
->capture
.stream_name
!= NULL
)
1165 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1166 SND_SOC_DAPM_STREAM_RESUME
);
1169 /* unmute any active DACs */
1170 for (i
= 0; i
< card
->num_rtd
; i
++) {
1171 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1172 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1174 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1177 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1178 drv
->ops
->digital_mute(dai
, 0);
1181 for (i
= 0; i
< card
->num_rtd
; i
++) {
1182 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1183 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1185 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1188 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1189 cpu_dai
->driver
->resume(cpu_dai
);
1190 if (platform
->driver
->resume
&& platform
->suspended
) {
1191 platform
->driver
->resume(cpu_dai
);
1192 platform
->suspended
= 0;
1196 if (card
->resume_post
)
1197 card
->resume_post(pdev
);
1199 dev_dbg(card
->dev
, "resume work completed\n");
1201 /* userspace can access us now we are back as we were before */
1202 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1205 /* powers up audio subsystem after a suspend */
1206 static int soc_resume(struct device
*dev
)
1208 struct platform_device
*pdev
= to_platform_device(dev
);
1209 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1212 /* AC97 devices might have other drivers hanging off them so
1213 * need to resume immediately. Other drivers don't have that
1214 * problem and may take a substantial amount of time to resume
1215 * due to I/O costs and anti-pop so handle them out of line.
1217 for (i
= 0; i
< card
->num_rtd
; i
++) {
1218 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1219 if (cpu_dai
->driver
->ac97_control
) {
1220 dev_dbg(dev
, "Resuming AC97 immediately\n");
1221 soc_resume_deferred(&card
->deferred_resume_work
);
1223 dev_dbg(dev
, "Scheduling resume work\n");
1224 if (!schedule_work(&card
->deferred_resume_work
))
1225 dev_err(dev
, "resume work item may be lost\n");
1232 #define soc_suspend NULL
1233 #define soc_resume NULL
1236 static struct snd_soc_dai_ops null_dai_ops
= {
1239 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1241 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1242 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1243 struct snd_soc_codec
*codec
;
1244 struct snd_soc_platform
*platform
;
1245 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1249 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1251 /* do we already have the CPU DAI for this link ? */
1255 /* no, then find CPU DAI from registered DAIs*/
1256 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1257 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1259 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1262 rtd
->cpu_dai
= cpu_dai
;
1266 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1267 dai_link
->cpu_dai_name
);
1270 /* do we already have the CODEC for this link ? */
1275 /* no, then find CODEC from registered CODECs*/
1276 list_for_each_entry(codec
, &codec_list
, list
) {
1277 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1280 if (!try_module_get(codec
->dev
->driver
->owner
))
1283 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1284 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1285 if (codec
->dev
== codec_dai
->dev
&&
1286 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1287 rtd
->codec_dai
= codec_dai
;
1291 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1292 dai_link
->codec_dai_name
);
1297 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1298 dai_link
->codec_name
);
1301 /* do we already have the CODEC DAI for this link ? */
1302 if (rtd
->platform
) {
1305 /* no, then find CPU DAI from registered DAIs*/
1306 list_for_each_entry(platform
, &platform_list
, list
) {
1307 if (!strcmp(platform
->name
, dai_link
->platform_name
)) {
1309 if (!try_module_get(platform
->dev
->driver
->owner
))
1312 rtd
->platform
= platform
;
1317 dev_dbg(card
->dev
, "platform %s not registered\n",
1318 dai_link
->platform_name
);
1322 /* mark rtd as complete if we found all 4 of our client devices */
1323 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1330 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1332 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1333 struct snd_soc_codec
*codec
= rtd
->codec
;
1334 struct snd_soc_platform
*platform
= rtd
->platform
;
1335 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1338 /* unregister the rtd device */
1339 if (rtd
->dev_registered
) {
1340 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1341 device_unregister(&rtd
->dev
);
1342 rtd
->dev_registered
= 0;
1345 /* remove the CODEC DAI */
1346 if (codec_dai
&& codec_dai
->probed
) {
1347 if (codec_dai
->driver
->remove
) {
1348 err
= codec_dai
->driver
->remove(codec_dai
);
1350 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1352 codec_dai
->probed
= 0;
1353 list_del(&codec_dai
->card_list
);
1356 /* remove the platform */
1357 if (platform
&& platform
->probed
) {
1358 if (platform
->driver
->remove
) {
1359 err
= platform
->driver
->remove(platform
);
1361 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1363 platform
->probed
= 0;
1364 list_del(&platform
->card_list
);
1365 module_put(platform
->dev
->driver
->owner
);
1368 /* remove the CODEC */
1369 if (codec
&& codec
->probed
) {
1370 if (codec
->driver
->remove
) {
1371 err
= codec
->driver
->remove(codec
);
1373 printk(KERN_ERR
"asoc: failed to remove %s\n", codec
->name
);
1376 /* Make sure all DAPM widgets are freed */
1377 snd_soc_dapm_free(&codec
->dapm
);
1379 soc_cleanup_codec_debugfs(codec
);
1380 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1382 list_del(&codec
->card_list
);
1383 module_put(codec
->dev
->driver
->owner
);
1386 /* remove the cpu_dai */
1387 if (cpu_dai
&& cpu_dai
->probed
) {
1388 if (cpu_dai
->driver
->remove
) {
1389 err
= cpu_dai
->driver
->remove(cpu_dai
);
1391 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1393 cpu_dai
->probed
= 0;
1394 list_del(&cpu_dai
->card_list
);
1395 module_put(cpu_dai
->dev
->driver
->owner
);
1399 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1400 struct snd_soc_codec
*codec
)
1404 if (card
->prefix_map
== NULL
)
1407 for (i
= 0; i
< card
->num_prefixes
; i
++) {
1408 struct snd_soc_prefix_map
*map
= &card
->prefix_map
[i
];
1409 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1410 codec
->name_prefix
= map
->name_prefix
;
1416 static void rtd_release(struct device
*dev
) {}
1418 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1420 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1421 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1422 struct snd_soc_codec
*codec
= rtd
->codec
;
1423 struct snd_soc_platform
*platform
= rtd
->platform
;
1424 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1428 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1430 /* config components */
1431 codec_dai
->codec
= codec
;
1433 cpu_dai
->platform
= platform
;
1435 rtd
->dev
.parent
= card
->dev
;
1436 codec_dai
->card
= card
;
1437 cpu_dai
->card
= card
;
1439 /* set default power off timeout */
1440 rtd
->pmdown_time
= pmdown_time
;
1442 /* probe the cpu_dai */
1443 if (!cpu_dai
->probed
) {
1444 if (cpu_dai
->driver
->probe
) {
1445 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1447 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1452 cpu_dai
->probed
= 1;
1453 /* mark cpu_dai as probed and add to card cpu_dai list */
1454 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1457 /* probe the CODEC */
1458 if (!codec
->probed
) {
1459 codec
->dapm
.card
= card
;
1460 soc_set_name_prefix(card
, codec
);
1461 if (codec
->driver
->probe
) {
1462 ret
= codec
->driver
->probe(codec
);
1464 printk(KERN_ERR
"asoc: failed to probe CODEC %s\n",
1470 soc_init_codec_debugfs(codec
);
1472 /* mark codec as probed and add to card codec list */
1474 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1477 /* probe the platform */
1478 if (!platform
->probed
) {
1479 if (platform
->driver
->probe
) {
1480 ret
= platform
->driver
->probe(platform
);
1482 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1487 /* mark platform as probed and add to card platform list */
1488 platform
->probed
= 1;
1489 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1492 /* probe the CODEC DAI */
1493 if (!codec_dai
->probed
) {
1494 if (codec_dai
->driver
->probe
) {
1495 ret
= codec_dai
->driver
->probe(codec_dai
);
1497 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1503 /* mark cpu_dai as probed and add to card cpu_dai list */
1504 codec_dai
->probed
= 1;
1505 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1508 /* DAPM dai link stream work */
1509 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1511 /* now that all clients have probed, initialise the DAI link */
1512 if (dai_link
->init
) {
1513 /* machine controls, routes and widgets are not prefixed */
1514 temp
= rtd
->codec
->name_prefix
;
1515 rtd
->codec
->name_prefix
= NULL
;
1516 ret
= dai_link
->init(rtd
);
1518 printk(KERN_ERR
"asoc: failed to init %s\n", dai_link
->stream_name
);
1521 rtd
->codec
->name_prefix
= temp
;
1524 /* Make sure all DAPM widgets are instantiated */
1525 snd_soc_dapm_new_widgets(&codec
->dapm
);
1526 snd_soc_dapm_sync(&codec
->dapm
);
1528 /* register the rtd device */
1529 rtd
->dev
.release
= rtd_release
;
1530 rtd
->dev
.init_name
= dai_link
->name
;
1531 ret
= device_register(&rtd
->dev
);
1533 printk(KERN_ERR
"asoc: failed to register DAI runtime device %d\n", ret
);
1537 rtd
->dev_registered
= 1;
1538 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1540 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1542 /* add DAPM sysfs entries for this codec */
1543 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1545 printk(KERN_WARNING
"asoc: failed to add codec dapm sysfs entries\n");
1547 /* add codec sysfs entries */
1548 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1550 printk(KERN_WARNING
"asoc: failed to add codec sysfs files\n");
1552 /* create the pcm */
1553 ret
= soc_new_pcm(rtd
, num
);
1555 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1559 /* add platform data for AC97 devices */
1560 if (rtd
->codec_dai
->driver
->ac97_control
)
1561 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1566 #ifdef CONFIG_SND_SOC_AC97_BUS
1567 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1571 /* Only instantiate AC97 if not already done by the adaptor
1572 * for the generic AC97 subsystem.
1574 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1576 * It is possible that the AC97 device is already registered to
1577 * the device subsystem. This happens when the device is created
1578 * via snd_ac97_mixer(). Currently only SoC codec that does so
1579 * is the generic AC97 glue but others migh emerge.
1581 * In those cases we don't try to register the device again.
1583 if (!rtd
->codec
->ac97_created
)
1586 ret
= soc_ac97_dev_register(rtd
->codec
);
1588 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1592 rtd
->codec
->ac97_registered
= 1;
1597 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1599 if (codec
->ac97_registered
) {
1600 soc_ac97_dev_unregister(codec
);
1601 codec
->ac97_registered
= 0;
1606 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1608 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1609 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1610 struct snd_soc_codec
*codec
;
1614 /* find CODEC from registered CODECs*/
1615 list_for_each_entry(codec
, &codec_list
, list
) {
1616 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1617 if (codec
->probed
) {
1619 "asoc: codec already probed");
1627 if (!try_module_get(codec
->dev
->driver
->owner
))
1631 codec
->dapm
.card
= card
;
1633 soc_set_name_prefix(card
, codec
);
1634 if (codec
->driver
->probe
) {
1635 ret
= codec
->driver
->probe(codec
);
1637 dev_err(codec
->dev
, "asoc: failed to probe CODEC");
1642 soc_init_codec_debugfs(codec
);
1644 /* mark codec as probed and add to card codec list */
1646 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1648 /* now that all clients have probed, initialise the DAI link */
1649 if (aux_dev
->init
) {
1650 /* machine controls, routes and widgets are not prefixed */
1651 temp
= codec
->name_prefix
;
1652 codec
->name_prefix
= NULL
;
1653 ret
= aux_dev
->init(&codec
->dapm
);
1656 "asoc: failed to init %s\n", aux_dev
->name
);
1659 codec
->name_prefix
= temp
;
1662 /* Make sure all DAPM widgets are instantiated */
1663 snd_soc_dapm_new_widgets(&codec
->dapm
);
1664 snd_soc_dapm_sync(&codec
->dapm
);
1666 /* register the rtd device */
1669 rtd
->dev
.parent
= card
->dev
;
1670 rtd
->dev
.release
= rtd_release
;
1671 rtd
->dev
.init_name
= aux_dev
->name
;
1672 ret
= device_register(&rtd
->dev
);
1675 "asoc: failed to register aux runtime device %d\n",
1679 rtd
->dev_registered
= 1;
1681 /* add DAPM sysfs entries for this codec */
1682 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1685 "asoc: failed to add codec dapm sysfs entries\n");
1687 /* add codec sysfs entries */
1688 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1690 dev_err(codec
->dev
, "asoc: failed to add codec sysfs files\n");
1696 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1698 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1699 struct snd_soc_codec
*codec
= rtd
->codec
;
1702 /* unregister the rtd device */
1703 if (rtd
->dev_registered
) {
1704 device_unregister(&rtd
->dev
);
1705 rtd
->dev_registered
= 0;
1708 /* remove the CODEC */
1709 if (codec
&& codec
->probed
) {
1710 if (codec
->driver
->remove
) {
1711 err
= codec
->driver
->remove(codec
);
1714 "asoc: failed to remove %s\n",
1718 /* Make sure all DAPM widgets are freed */
1719 snd_soc_dapm_free(&codec
->dapm
);
1721 soc_cleanup_codec_debugfs(codec
);
1722 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1724 list_del(&codec
->card_list
);
1725 module_put(codec
->dev
->driver
->owner
);
1729 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1731 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1734 mutex_lock(&card
->mutex
);
1736 if (card
->instantiated
) {
1737 mutex_unlock(&card
->mutex
);
1742 for (i
= 0; i
< card
->num_links
; i
++)
1743 soc_bind_dai_link(card
, i
);
1745 /* bind completed ? */
1746 if (card
->num_rtd
!= card
->num_links
) {
1747 mutex_unlock(&card
->mutex
);
1751 /* card bind complete so register a sound card */
1752 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1753 card
->owner
, 0, &card
->snd_card
);
1755 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1757 mutex_unlock(&card
->mutex
);
1760 card
->snd_card
->dev
= card
->dev
;
1763 /* deferred resume work */
1764 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1767 /* initialise the sound card only once */
1769 ret
= card
->probe(pdev
);
1771 goto card_probe_error
;
1774 for (i
= 0; i
< card
->num_links
; i
++) {
1775 ret
= soc_probe_dai_link(card
, i
);
1777 pr_err("asoc: failed to instantiate card %s: %d\n",
1783 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1784 ret
= soc_probe_aux_dev(card
, i
);
1786 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1788 goto probe_aux_dev_err
;
1792 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1794 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1797 ret
= snd_card_register(card
->snd_card
);
1799 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1803 #ifdef CONFIG_SND_SOC_AC97_BUS
1804 /* register any AC97 codecs */
1805 for (i
= 0; i
< card
->num_rtd
; i
++) {
1806 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1808 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1814 card
->instantiated
= 1;
1815 mutex_unlock(&card
->mutex
);
1819 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1820 soc_remove_aux_dev(card
, i
);
1823 for (i
= 0; i
< card
->num_links
; i
++)
1824 soc_remove_dai_link(card
, i
);
1830 snd_card_free(card
->snd_card
);
1832 mutex_unlock(&card
->mutex
);
1836 * Attempt to initialise any uninitialised cards. Must be called with
1839 static void snd_soc_instantiate_cards(void)
1841 struct snd_soc_card
*card
;
1842 list_for_each_entry(card
, &card_list
, list
)
1843 snd_soc_instantiate_card(card
);
1846 /* probes a new socdev */
1847 static int soc_probe(struct platform_device
*pdev
)
1849 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1852 /* Bodge while we unpick instantiation */
1853 card
->dev
= &pdev
->dev
;
1854 INIT_LIST_HEAD(&card
->dai_dev_list
);
1855 INIT_LIST_HEAD(&card
->codec_dev_list
);
1856 INIT_LIST_HEAD(&card
->platform_dev_list
);
1858 soc_init_card_debugfs(card
);
1860 ret
= snd_soc_register_card(card
);
1862 dev_err(&pdev
->dev
, "Failed to register card\n");
1869 /* removes a socdev */
1870 static int soc_remove(struct platform_device
*pdev
)
1872 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1875 if (card
->instantiated
) {
1877 /* make sure any delayed work runs */
1878 for (i
= 0; i
< card
->num_rtd
; i
++) {
1879 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1880 run_delayed_work(&rtd
->delayed_work
);
1883 /* remove auxiliary devices */
1884 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1885 soc_remove_aux_dev(card
, i
);
1887 /* remove and free each DAI */
1888 for (i
= 0; i
< card
->num_rtd
; i
++)
1889 soc_remove_dai_link(card
, i
);
1891 soc_cleanup_card_debugfs(card
);
1893 /* remove the card */
1898 snd_card_free(card
->snd_card
);
1900 snd_soc_unregister_card(card
);
1904 static int soc_poweroff(struct device
*dev
)
1906 struct platform_device
*pdev
= to_platform_device(dev
);
1907 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1910 if (!card
->instantiated
)
1913 /* Flush out pmdown_time work - we actually do want to run it
1914 * now, we're shutting down so no imminent restart. */
1915 for (i
= 0; i
< card
->num_rtd
; i
++) {
1916 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1917 run_delayed_work(&rtd
->delayed_work
);
1920 snd_soc_dapm_shutdown(card
);
1925 static const struct dev_pm_ops soc_pm_ops
= {
1926 .suspend
= soc_suspend
,
1927 .resume
= soc_resume
,
1928 .poweroff
= soc_poweroff
,
1931 /* ASoC platform driver */
1932 static struct platform_driver soc_driver
= {
1934 .name
= "soc-audio",
1935 .owner
= THIS_MODULE
,
1939 .remove
= soc_remove
,
1942 /* create a new pcm */
1943 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
1945 struct snd_soc_codec
*codec
= rtd
->codec
;
1946 struct snd_soc_platform
*platform
= rtd
->platform
;
1947 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1948 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1949 struct snd_pcm
*pcm
;
1951 int ret
= 0, playback
= 0, capture
= 0;
1953 /* check client and interface hw capabilities */
1954 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
1955 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
1957 if (codec_dai
->driver
->playback
.channels_min
)
1959 if (codec_dai
->driver
->capture
.channels_min
)
1962 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
1963 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
1964 num
, playback
, capture
, &pcm
);
1966 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
1971 pcm
->private_data
= rtd
;
1972 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
1973 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
1974 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
1975 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
1976 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
1977 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
1978 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
1981 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
1984 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
1986 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
, codec_dai
, pcm
);
1988 printk(KERN_ERR
"asoc: platform pcm constructor failed\n");
1992 pcm
->private_free
= platform
->driver
->pcm_free
;
1993 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
1999 * snd_soc_codec_volatile_register: Report if a register is volatile.
2001 * @codec: CODEC to query.
2002 * @reg: Register to query.
2004 * Boolean function indiciating if a CODEC register is volatile.
2006 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
, int reg
)
2008 if (codec
->driver
->volatile_register
)
2009 return codec
->driver
->volatile_register(reg
);
2013 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
2016 * snd_soc_new_ac97_codec - initailise AC97 device
2017 * @codec: audio codec
2018 * @ops: AC97 bus operations
2019 * @num: AC97 codec number
2021 * Initialises AC97 codec resources for use by ad-hoc devices only.
2023 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2024 struct snd_ac97_bus_ops
*ops
, int num
)
2026 mutex_lock(&codec
->mutex
);
2028 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2029 if (codec
->ac97
== NULL
) {
2030 mutex_unlock(&codec
->mutex
);
2034 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2035 if (codec
->ac97
->bus
== NULL
) {
2038 mutex_unlock(&codec
->mutex
);
2042 codec
->ac97
->bus
->ops
= ops
;
2043 codec
->ac97
->num
= num
;
2046 * Mark the AC97 device to be created by us. This way we ensure that the
2047 * device will be registered with the device subsystem later on.
2049 codec
->ac97_created
= 1;
2051 mutex_unlock(&codec
->mutex
);
2054 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2057 * snd_soc_free_ac97_codec - free AC97 codec device
2058 * @codec: audio codec
2060 * Frees AC97 codec device resources.
2062 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2064 mutex_lock(&codec
->mutex
);
2065 #ifdef CONFIG_SND_SOC_AC97_BUS
2066 soc_unregister_ac97_dai_link(codec
);
2068 kfree(codec
->ac97
->bus
);
2071 codec
->ac97_created
= 0;
2072 mutex_unlock(&codec
->mutex
);
2074 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2076 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2080 ret
= codec
->driver
->read(codec
, reg
);
2081 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2082 trace_snd_soc_reg_read(codec
, reg
, ret
);
2086 EXPORT_SYMBOL_GPL(snd_soc_read
);
2088 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2089 unsigned int reg
, unsigned int val
)
2091 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2092 trace_snd_soc_reg_write(codec
, reg
, val
);
2093 return codec
->driver
->write(codec
, reg
, val
);
2095 EXPORT_SYMBOL_GPL(snd_soc_write
);
2098 * snd_soc_update_bits - update codec register bits
2099 * @codec: audio codec
2100 * @reg: codec register
2101 * @mask: register mask
2104 * Writes new register value.
2106 * Returns 1 for change else 0.
2108 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2109 unsigned int mask
, unsigned int value
)
2112 unsigned int old
, new;
2114 old
= snd_soc_read(codec
, reg
);
2115 new = (old
& ~mask
) | value
;
2116 change
= old
!= new;
2118 snd_soc_write(codec
, reg
, new);
2122 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2125 * snd_soc_update_bits_locked - update codec register bits
2126 * @codec: audio codec
2127 * @reg: codec register
2128 * @mask: register mask
2131 * Writes new register value, and takes the codec mutex.
2133 * Returns 1 for change else 0.
2135 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2136 unsigned short reg
, unsigned int mask
,
2141 mutex_lock(&codec
->mutex
);
2142 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2143 mutex_unlock(&codec
->mutex
);
2147 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2150 * snd_soc_test_bits - test register for change
2151 * @codec: audio codec
2152 * @reg: codec register
2153 * @mask: register mask
2156 * Tests a register with a new value and checks if the new value is
2157 * different from the old value.
2159 * Returns 1 for change else 0.
2161 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2162 unsigned int mask
, unsigned int value
)
2165 unsigned int old
, new;
2167 old
= snd_soc_read(codec
, reg
);
2168 new = (old
& ~mask
) | value
;
2169 change
= old
!= new;
2173 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2176 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2177 * @substream: the pcm substream
2178 * @hw: the hardware parameters
2180 * Sets the substream runtime hardware parameters.
2182 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2183 const struct snd_pcm_hardware
*hw
)
2185 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2186 runtime
->hw
.info
= hw
->info
;
2187 runtime
->hw
.formats
= hw
->formats
;
2188 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2189 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2190 runtime
->hw
.periods_min
= hw
->periods_min
;
2191 runtime
->hw
.periods_max
= hw
->periods_max
;
2192 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2193 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2196 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2199 * snd_soc_cnew - create new control
2200 * @_template: control template
2201 * @data: control private data
2202 * @long_name: control long name
2204 * Create a new mixer control from a template control.
2206 * Returns 0 for success, else error.
2208 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2209 void *data
, char *long_name
)
2211 struct snd_kcontrol_new
template;
2213 memcpy(&template, _template
, sizeof(template));
2215 template.name
= long_name
;
2218 return snd_ctl_new1(&template, data
);
2220 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2223 * snd_soc_add_controls - add an array of controls to a codec.
2224 * Convienience function to add a list of controls. Many codecs were
2225 * duplicating this code.
2227 * @codec: codec to add controls to
2228 * @controls: array of controls to add
2229 * @num_controls: number of elements in the array
2231 * Return 0 for success, else error.
2233 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2234 const struct snd_kcontrol_new
*controls
, int num_controls
)
2236 struct snd_card
*card
= codec
->card
->snd_card
;
2237 char prefixed_name
[44], *name
;
2240 for (i
= 0; i
< num_controls
; i
++) {
2241 const struct snd_kcontrol_new
*control
= &controls
[i
];
2242 if (codec
->name_prefix
) {
2243 snprintf(prefixed_name
, sizeof(prefixed_name
), "%s %s",
2244 codec
->name_prefix
, control
->name
);
2245 name
= prefixed_name
;
2247 name
= control
->name
;
2249 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
, name
));
2251 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2252 codec
->name
, name
, err
);
2259 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2262 * snd_soc_info_enum_double - enumerated double mixer info callback
2263 * @kcontrol: mixer control
2264 * @uinfo: control element information
2266 * Callback to provide information about a double enumerated
2269 * Returns 0 for success.
2271 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2272 struct snd_ctl_elem_info
*uinfo
)
2274 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2276 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2277 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2278 uinfo
->value
.enumerated
.items
= e
->max
;
2280 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2281 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2282 strcpy(uinfo
->value
.enumerated
.name
,
2283 e
->texts
[uinfo
->value
.enumerated
.item
]);
2286 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2289 * snd_soc_get_enum_double - enumerated double mixer get callback
2290 * @kcontrol: mixer control
2291 * @ucontrol: control element information
2293 * Callback to get the value of a double enumerated mixer.
2295 * Returns 0 for success.
2297 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2298 struct snd_ctl_elem_value
*ucontrol
)
2300 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2301 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2302 unsigned int val
, bitmask
;
2304 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2306 val
= snd_soc_read(codec
, e
->reg
);
2307 ucontrol
->value
.enumerated
.item
[0]
2308 = (val
>> e
->shift_l
) & (bitmask
- 1);
2309 if (e
->shift_l
!= e
->shift_r
)
2310 ucontrol
->value
.enumerated
.item
[1] =
2311 (val
>> e
->shift_r
) & (bitmask
- 1);
2315 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2318 * snd_soc_put_enum_double - enumerated double mixer put callback
2319 * @kcontrol: mixer control
2320 * @ucontrol: control element information
2322 * Callback to set the value of a double enumerated mixer.
2324 * Returns 0 for success.
2326 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2327 struct snd_ctl_elem_value
*ucontrol
)
2329 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2330 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2332 unsigned int mask
, bitmask
;
2334 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2336 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2338 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2339 mask
= (bitmask
- 1) << e
->shift_l
;
2340 if (e
->shift_l
!= e
->shift_r
) {
2341 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2343 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2344 mask
|= (bitmask
- 1) << e
->shift_r
;
2347 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2349 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2352 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2353 * @kcontrol: mixer control
2354 * @ucontrol: control element information
2356 * Callback to get the value of a double semi enumerated mixer.
2358 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2359 * used for handling bitfield coded enumeration for example.
2361 * Returns 0 for success.
2363 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2364 struct snd_ctl_elem_value
*ucontrol
)
2366 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2367 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2368 unsigned int reg_val
, val
, mux
;
2370 reg_val
= snd_soc_read(codec
, e
->reg
);
2371 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2372 for (mux
= 0; mux
< e
->max
; mux
++) {
2373 if (val
== e
->values
[mux
])
2376 ucontrol
->value
.enumerated
.item
[0] = mux
;
2377 if (e
->shift_l
!= e
->shift_r
) {
2378 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2379 for (mux
= 0; mux
< e
->max
; mux
++) {
2380 if (val
== e
->values
[mux
])
2383 ucontrol
->value
.enumerated
.item
[1] = mux
;
2388 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2391 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2392 * @kcontrol: mixer control
2393 * @ucontrol: control element information
2395 * Callback to set the value of a double semi enumerated mixer.
2397 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2398 * used for handling bitfield coded enumeration for example.
2400 * Returns 0 for success.
2402 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2403 struct snd_ctl_elem_value
*ucontrol
)
2405 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2406 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2410 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2412 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2413 mask
= e
->mask
<< e
->shift_l
;
2414 if (e
->shift_l
!= e
->shift_r
) {
2415 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2417 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2418 mask
|= e
->mask
<< e
->shift_r
;
2421 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2423 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2426 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2427 * @kcontrol: mixer control
2428 * @uinfo: control element information
2430 * Callback to provide information about an external enumerated
2433 * Returns 0 for success.
2435 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2436 struct snd_ctl_elem_info
*uinfo
)
2438 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2440 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2442 uinfo
->value
.enumerated
.items
= e
->max
;
2444 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2445 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2446 strcpy(uinfo
->value
.enumerated
.name
,
2447 e
->texts
[uinfo
->value
.enumerated
.item
]);
2450 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2453 * snd_soc_info_volsw_ext - external single mixer info callback
2454 * @kcontrol: mixer control
2455 * @uinfo: control element information
2457 * Callback to provide information about a single external mixer control.
2459 * Returns 0 for success.
2461 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2462 struct snd_ctl_elem_info
*uinfo
)
2464 int max
= kcontrol
->private_value
;
2466 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2467 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2469 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2472 uinfo
->value
.integer
.min
= 0;
2473 uinfo
->value
.integer
.max
= max
;
2476 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2479 * snd_soc_info_volsw - single mixer info callback
2480 * @kcontrol: mixer control
2481 * @uinfo: control element information
2483 * Callback to provide information about a single mixer control.
2485 * Returns 0 for success.
2487 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2488 struct snd_ctl_elem_info
*uinfo
)
2490 struct soc_mixer_control
*mc
=
2491 (struct soc_mixer_control
*)kcontrol
->private_value
;
2493 unsigned int shift
= mc
->shift
;
2494 unsigned int rshift
= mc
->rshift
;
2496 if (!mc
->platform_max
)
2497 mc
->platform_max
= mc
->max
;
2498 platform_max
= mc
->platform_max
;
2500 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2501 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2503 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2505 uinfo
->count
= shift
== rshift
? 1 : 2;
2506 uinfo
->value
.integer
.min
= 0;
2507 uinfo
->value
.integer
.max
= platform_max
;
2510 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2513 * snd_soc_get_volsw - single mixer get callback
2514 * @kcontrol: mixer control
2515 * @ucontrol: control element information
2517 * Callback to get the value of a single mixer control.
2519 * Returns 0 for success.
2521 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2522 struct snd_ctl_elem_value
*ucontrol
)
2524 struct soc_mixer_control
*mc
=
2525 (struct soc_mixer_control
*)kcontrol
->private_value
;
2526 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2527 unsigned int reg
= mc
->reg
;
2528 unsigned int shift
= mc
->shift
;
2529 unsigned int rshift
= mc
->rshift
;
2531 unsigned int mask
= (1 << fls(max
)) - 1;
2532 unsigned int invert
= mc
->invert
;
2534 ucontrol
->value
.integer
.value
[0] =
2535 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2536 if (shift
!= rshift
)
2537 ucontrol
->value
.integer
.value
[1] =
2538 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2540 ucontrol
->value
.integer
.value
[0] =
2541 max
- ucontrol
->value
.integer
.value
[0];
2542 if (shift
!= rshift
)
2543 ucontrol
->value
.integer
.value
[1] =
2544 max
- ucontrol
->value
.integer
.value
[1];
2549 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2552 * snd_soc_put_volsw - single mixer put callback
2553 * @kcontrol: mixer control
2554 * @ucontrol: control element information
2556 * Callback to set the value of a single mixer control.
2558 * Returns 0 for success.
2560 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2561 struct snd_ctl_elem_value
*ucontrol
)
2563 struct soc_mixer_control
*mc
=
2564 (struct soc_mixer_control
*)kcontrol
->private_value
;
2565 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2566 unsigned int reg
= mc
->reg
;
2567 unsigned int shift
= mc
->shift
;
2568 unsigned int rshift
= mc
->rshift
;
2570 unsigned int mask
= (1 << fls(max
)) - 1;
2571 unsigned int invert
= mc
->invert
;
2572 unsigned int val
, val2
, val_mask
;
2574 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2577 val_mask
= mask
<< shift
;
2579 if (shift
!= rshift
) {
2580 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2583 val_mask
|= mask
<< rshift
;
2584 val
|= val2
<< rshift
;
2586 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2588 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2591 * snd_soc_info_volsw_2r - double mixer info callback
2592 * @kcontrol: mixer control
2593 * @uinfo: control element information
2595 * Callback to provide information about a double mixer control that
2596 * spans 2 codec registers.
2598 * Returns 0 for success.
2600 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2601 struct snd_ctl_elem_info
*uinfo
)
2603 struct soc_mixer_control
*mc
=
2604 (struct soc_mixer_control
*)kcontrol
->private_value
;
2607 if (!mc
->platform_max
)
2608 mc
->platform_max
= mc
->max
;
2609 platform_max
= mc
->platform_max
;
2611 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2612 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2614 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2617 uinfo
->value
.integer
.min
= 0;
2618 uinfo
->value
.integer
.max
= platform_max
;
2621 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2624 * snd_soc_get_volsw_2r - double mixer get callback
2625 * @kcontrol: mixer control
2626 * @ucontrol: control element information
2628 * Callback to get the value of a double mixer control that spans 2 registers.
2630 * Returns 0 for success.
2632 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2633 struct snd_ctl_elem_value
*ucontrol
)
2635 struct soc_mixer_control
*mc
=
2636 (struct soc_mixer_control
*)kcontrol
->private_value
;
2637 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2638 unsigned int reg
= mc
->reg
;
2639 unsigned int reg2
= mc
->rreg
;
2640 unsigned int shift
= mc
->shift
;
2642 unsigned int mask
= (1 << fls(max
)) - 1;
2643 unsigned int invert
= mc
->invert
;
2645 ucontrol
->value
.integer
.value
[0] =
2646 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2647 ucontrol
->value
.integer
.value
[1] =
2648 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2650 ucontrol
->value
.integer
.value
[0] =
2651 max
- ucontrol
->value
.integer
.value
[0];
2652 ucontrol
->value
.integer
.value
[1] =
2653 max
- ucontrol
->value
.integer
.value
[1];
2658 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2661 * snd_soc_put_volsw_2r - double mixer set callback
2662 * @kcontrol: mixer control
2663 * @ucontrol: control element information
2665 * Callback to set the value of a double mixer control that spans 2 registers.
2667 * Returns 0 for success.
2669 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2670 struct snd_ctl_elem_value
*ucontrol
)
2672 struct soc_mixer_control
*mc
=
2673 (struct soc_mixer_control
*)kcontrol
->private_value
;
2674 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2675 unsigned int reg
= mc
->reg
;
2676 unsigned int reg2
= mc
->rreg
;
2677 unsigned int shift
= mc
->shift
;
2679 unsigned int mask
= (1 << fls(max
)) - 1;
2680 unsigned int invert
= mc
->invert
;
2682 unsigned int val
, val2
, val_mask
;
2684 val_mask
= mask
<< shift
;
2685 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2686 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2694 val2
= val2
<< shift
;
2696 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2700 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2703 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2706 * snd_soc_info_volsw_s8 - signed mixer info callback
2707 * @kcontrol: mixer control
2708 * @uinfo: control element information
2710 * Callback to provide information about a signed mixer control.
2712 * Returns 0 for success.
2714 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2715 struct snd_ctl_elem_info
*uinfo
)
2717 struct soc_mixer_control
*mc
=
2718 (struct soc_mixer_control
*)kcontrol
->private_value
;
2722 if (!mc
->platform_max
)
2723 mc
->platform_max
= mc
->max
;
2724 platform_max
= mc
->platform_max
;
2726 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2728 uinfo
->value
.integer
.min
= 0;
2729 uinfo
->value
.integer
.max
= platform_max
- min
;
2732 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2735 * snd_soc_get_volsw_s8 - signed mixer get callback
2736 * @kcontrol: mixer control
2737 * @ucontrol: control element information
2739 * Callback to get the value of a signed mixer control.
2741 * Returns 0 for success.
2743 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2744 struct snd_ctl_elem_value
*ucontrol
)
2746 struct soc_mixer_control
*mc
=
2747 (struct soc_mixer_control
*)kcontrol
->private_value
;
2748 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2749 unsigned int reg
= mc
->reg
;
2751 int val
= snd_soc_read(codec
, reg
);
2753 ucontrol
->value
.integer
.value
[0] =
2754 ((signed char)(val
& 0xff))-min
;
2755 ucontrol
->value
.integer
.value
[1] =
2756 ((signed char)((val
>> 8) & 0xff))-min
;
2759 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2762 * snd_soc_put_volsw_sgn - signed mixer put callback
2763 * @kcontrol: mixer control
2764 * @ucontrol: control element information
2766 * Callback to set the value of a signed mixer control.
2768 * Returns 0 for success.
2770 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2771 struct snd_ctl_elem_value
*ucontrol
)
2773 struct soc_mixer_control
*mc
=
2774 (struct soc_mixer_control
*)kcontrol
->private_value
;
2775 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2776 unsigned int reg
= mc
->reg
;
2780 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2781 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2783 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2785 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2788 * snd_soc_limit_volume - Set new limit to an existing volume control.
2790 * @codec: where to look for the control
2791 * @name: Name of the control
2792 * @max: new maximum limit
2794 * Return 0 for success, else error.
2796 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2797 const char *name
, int max
)
2799 struct snd_card
*card
= codec
->card
->snd_card
;
2800 struct snd_kcontrol
*kctl
;
2801 struct soc_mixer_control
*mc
;
2805 /* Sanity check for name and max */
2806 if (unlikely(!name
|| max
<= 0))
2809 list_for_each_entry(kctl
, &card
->controls
, list
) {
2810 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2816 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2817 if (max
<= mc
->max
) {
2818 mc
->platform_max
= max
;
2824 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2827 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2828 * mixer info callback
2829 * @kcontrol: mixer control
2830 * @uinfo: control element information
2832 * Returns 0 for success.
2834 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2835 struct snd_ctl_elem_info
*uinfo
)
2837 struct soc_mixer_control
*mc
=
2838 (struct soc_mixer_control
*)kcontrol
->private_value
;
2842 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2844 uinfo
->value
.integer
.min
= 0;
2845 uinfo
->value
.integer
.max
= max
-min
;
2849 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2852 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2853 * mixer get callback
2854 * @kcontrol: mixer control
2855 * @uinfo: control element information
2857 * Returns 0 for success.
2859 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2860 struct snd_ctl_elem_value
*ucontrol
)
2862 struct soc_mixer_control
*mc
=
2863 (struct soc_mixer_control
*)kcontrol
->private_value
;
2864 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2865 unsigned int mask
= (1<<mc
->shift
)-1;
2867 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2868 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2870 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2871 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2874 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2877 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2878 * mixer put callback
2879 * @kcontrol: mixer control
2880 * @uinfo: control element information
2882 * Returns 0 for success.
2884 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2885 struct snd_ctl_elem_value
*ucontrol
)
2887 struct soc_mixer_control
*mc
=
2888 (struct soc_mixer_control
*)kcontrol
->private_value
;
2889 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2890 unsigned int mask
= (1<<mc
->shift
)-1;
2893 unsigned int val
, valr
, oval
, ovalr
;
2895 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2897 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2900 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2901 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2905 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2909 if (ovalr
!= valr
) {
2910 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2917 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2920 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2922 * @clk_id: DAI specific clock ID
2923 * @freq: new clock frequency in Hz
2924 * @dir: new clock direction - input/output.
2926 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2928 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2929 unsigned int freq
, int dir
)
2931 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2932 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2936 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2939 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2941 * @div_id: DAI specific clock divider ID
2942 * @div: new clock divisor.
2944 * Configures the clock dividers. This is used to derive the best DAI bit and
2945 * frame clocks from the system or master clock. It's best to set the DAI bit
2946 * and frame clocks as low as possible to save system power.
2948 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2949 int div_id
, int div
)
2951 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2952 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2956 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2959 * snd_soc_dai_set_pll - configure DAI PLL.
2961 * @pll_id: DAI specific PLL ID
2962 * @source: DAI specific source for the PLL
2963 * @freq_in: PLL input clock frequency in Hz
2964 * @freq_out: requested PLL output clock frequency in Hz
2966 * Configures and enables PLL to generate output clock based on input clock.
2968 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2969 unsigned int freq_in
, unsigned int freq_out
)
2971 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2972 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2977 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2980 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2982 * @fmt: SND_SOC_DAIFMT_ format value.
2984 * Configures the DAI hardware format and clocking.
2986 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2988 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2989 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2993 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2996 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2998 * @tx_mask: bitmask representing active TX slots.
2999 * @rx_mask: bitmask representing active RX slots.
3000 * @slots: Number of slots in use.
3001 * @slot_width: Width in bits for each slot.
3003 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3006 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3007 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3009 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3010 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3015 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3018 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3020 * @tx_num: how many TX channels
3021 * @tx_slot: pointer to an array which imply the TX slot number channel
3023 * @rx_num: how many RX channels
3024 * @rx_slot: pointer to an array which imply the RX slot number channel
3027 * configure the relationship between channel number and TDM slot number.
3029 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3030 unsigned int tx_num
, unsigned int *tx_slot
,
3031 unsigned int rx_num
, unsigned int *rx_slot
)
3033 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3034 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3039 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3042 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3044 * @tristate: tristate enable
3046 * Tristates the DAI so that others can use it.
3048 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3050 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3051 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3055 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3058 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3060 * @mute: mute enable
3062 * Mutes the DAI DAC.
3064 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3066 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3067 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3071 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3074 * snd_soc_register_card - Register a card with the ASoC core
3076 * @card: Card to register
3078 * Note that currently this is an internal only function: it will be
3079 * exposed to machine drivers after further backporting of ASoC v2
3080 * registration APIs.
3082 static int snd_soc_register_card(struct snd_soc_card
*card
)
3086 if (!card
->name
|| !card
->dev
)
3089 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
3090 (card
->num_links
+ card
->num_aux_devs
),
3092 if (card
->rtd
== NULL
)
3094 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3096 for (i
= 0; i
< card
->num_links
; i
++)
3097 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3099 INIT_LIST_HEAD(&card
->list
);
3100 card
->instantiated
= 0;
3101 mutex_init(&card
->mutex
);
3103 mutex_lock(&client_mutex
);
3104 list_add(&card
->list
, &card_list
);
3105 snd_soc_instantiate_cards();
3106 mutex_unlock(&client_mutex
);
3108 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
3114 * snd_soc_unregister_card - Unregister a card with the ASoC core
3116 * @card: Card to unregister
3118 * Note that currently this is an internal only function: it will be
3119 * exposed to machine drivers after further backporting of ASoC v2
3120 * registration APIs.
3122 static int snd_soc_unregister_card(struct snd_soc_card
*card
)
3124 mutex_lock(&client_mutex
);
3125 list_del(&card
->list
);
3126 mutex_unlock(&client_mutex
);
3127 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3133 * Simplify DAI link configuration by removing ".-1" from device names
3134 * and sanitizing names.
3136 static inline char *fmt_single_name(struct device
*dev
, int *id
)
3138 char *found
, name
[NAME_SIZE
];
3141 if (dev_name(dev
) == NULL
)
3144 strncpy(name
, dev_name(dev
), NAME_SIZE
);
3146 /* are we a "%s.%d" name (platform and SPI components) */
3147 found
= strstr(name
, dev
->driver
->name
);
3150 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3152 /* discard ID from name if ID == -1 */
3154 found
[strlen(dev
->driver
->name
)] = '\0';
3158 /* I2C component devices are named "bus-addr" */
3159 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3160 char tmp
[NAME_SIZE
];
3162 /* create unique ID number from I2C addr and bus */
3163 *id
= ((id1
& 0xffff) << 16) + id2
;
3165 /* sanitize component name for DAI link creation */
3166 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3167 strncpy(name
, tmp
, NAME_SIZE
);
3172 return kstrdup(name
, GFP_KERNEL
);
3176 * Simplify DAI link naming for single devices with multiple DAIs by removing
3177 * any ".-1" and using the DAI name (instead of device name).
3179 static inline char *fmt_multiple_name(struct device
*dev
,
3180 struct snd_soc_dai_driver
*dai_drv
)
3182 if (dai_drv
->name
== NULL
) {
3183 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
3188 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3192 * snd_soc_register_dai - Register a DAI with the ASoC core
3194 * @dai: DAI to register
3196 int snd_soc_register_dai(struct device
*dev
,
3197 struct snd_soc_dai_driver
*dai_drv
)
3199 struct snd_soc_dai
*dai
;
3201 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3203 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3207 /* create DAI component name */
3208 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3209 if (dai
->name
== NULL
) {
3215 dai
->driver
= dai_drv
;
3216 if (!dai
->driver
->ops
)
3217 dai
->driver
->ops
= &null_dai_ops
;
3219 mutex_lock(&client_mutex
);
3220 list_add(&dai
->list
, &dai_list
);
3221 snd_soc_instantiate_cards();
3222 mutex_unlock(&client_mutex
);
3224 pr_debug("Registered DAI '%s'\n", dai
->name
);
3228 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3231 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3233 * @dai: DAI to unregister
3235 void snd_soc_unregister_dai(struct device
*dev
)
3237 struct snd_soc_dai
*dai
;
3239 list_for_each_entry(dai
, &dai_list
, list
) {
3240 if (dev
== dai
->dev
)
3246 mutex_lock(&client_mutex
);
3247 list_del(&dai
->list
);
3248 mutex_unlock(&client_mutex
);
3250 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3254 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3257 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3259 * @dai: Array of DAIs to register
3260 * @count: Number of DAIs
3262 int snd_soc_register_dais(struct device
*dev
,
3263 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3265 struct snd_soc_dai
*dai
;
3268 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3270 for (i
= 0; i
< count
; i
++) {
3272 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3278 /* create DAI component name */
3279 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3280 if (dai
->name
== NULL
) {
3287 dai
->driver
= &dai_drv
[i
];
3288 if (dai
->driver
->id
)
3289 dai
->id
= dai
->driver
->id
;
3292 if (!dai
->driver
->ops
)
3293 dai
->driver
->ops
= &null_dai_ops
;
3295 mutex_lock(&client_mutex
);
3296 list_add(&dai
->list
, &dai_list
);
3297 mutex_unlock(&client_mutex
);
3299 pr_debug("Registered DAI '%s'\n", dai
->name
);
3302 snd_soc_instantiate_cards();
3306 for (i
--; i
>= 0; i
--)
3307 snd_soc_unregister_dai(dev
);
3311 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3314 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3316 * @dai: Array of DAIs to unregister
3317 * @count: Number of DAIs
3319 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3323 for (i
= 0; i
< count
; i
++)
3324 snd_soc_unregister_dai(dev
);
3326 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3329 * snd_soc_register_platform - Register a platform with the ASoC core
3331 * @platform: platform to register
3333 int snd_soc_register_platform(struct device
*dev
,
3334 struct snd_soc_platform_driver
*platform_drv
)
3336 struct snd_soc_platform
*platform
;
3338 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3340 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3341 if (platform
== NULL
)
3344 /* create platform component name */
3345 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3346 if (platform
->name
== NULL
) {
3351 platform
->dev
= dev
;
3352 platform
->driver
= platform_drv
;
3354 mutex_lock(&client_mutex
);
3355 list_add(&platform
->list
, &platform_list
);
3356 snd_soc_instantiate_cards();
3357 mutex_unlock(&client_mutex
);
3359 pr_debug("Registered platform '%s'\n", platform
->name
);
3363 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3366 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3368 * @platform: platform to unregister
3370 void snd_soc_unregister_platform(struct device
*dev
)
3372 struct snd_soc_platform
*platform
;
3374 list_for_each_entry(platform
, &platform_list
, list
) {
3375 if (dev
== platform
->dev
)
3381 mutex_lock(&client_mutex
);
3382 list_del(&platform
->list
);
3383 mutex_unlock(&client_mutex
);
3385 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3386 kfree(platform
->name
);
3389 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3391 static u64 codec_format_map
[] = {
3392 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3393 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3394 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3395 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3396 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3397 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3398 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3399 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3400 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3401 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3402 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3403 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3404 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3405 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3406 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3407 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3410 /* Fix up the DAI formats for endianness: codecs don't actually see
3411 * the endianness of the data but we're using the CPU format
3412 * definitions which do need to include endianness so we ensure that
3413 * codec DAIs always have both big and little endian variants set.
3415 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3419 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3420 if (stream
->formats
& codec_format_map
[i
])
3421 stream
->formats
|= codec_format_map
[i
];
3425 * snd_soc_register_codec - Register a codec with the ASoC core
3427 * @codec: codec to register
3429 int snd_soc_register_codec(struct device
*dev
,
3430 struct snd_soc_codec_driver
*codec_drv
,
3431 struct snd_soc_dai_driver
*dai_drv
, int num_dai
)
3433 struct snd_soc_codec
*codec
;
3436 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3438 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3442 /* create CODEC component name */
3443 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3444 if (codec
->name
== NULL
) {
3449 INIT_LIST_HEAD(&codec
->dapm
.widgets
);
3450 INIT_LIST_HEAD(&codec
->dapm
.paths
);
3451 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3452 codec
->dapm
.dev
= dev
;
3453 codec
->dapm
.codec
= codec
;
3455 codec
->driver
= codec_drv
;
3456 codec
->num_dai
= num_dai
;
3457 mutex_init(&codec
->mutex
);
3459 /* allocate CODEC register cache */
3460 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3461 ret
= snd_soc_cache_init(codec
);
3463 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
3469 for (i
= 0; i
< num_dai
; i
++) {
3470 fixup_codec_formats(&dai_drv
[i
].playback
);
3471 fixup_codec_formats(&dai_drv
[i
].capture
);
3474 /* register any DAIs */
3476 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3481 mutex_lock(&client_mutex
);
3482 list_add(&codec
->list
, &codec_list
);
3483 snd_soc_instantiate_cards();
3484 mutex_unlock(&client_mutex
);
3486 pr_debug("Registered codec '%s'\n", codec
->name
);
3490 snd_soc_cache_exit(codec
);
3496 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3499 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3501 * @codec: codec to unregister
3503 void snd_soc_unregister_codec(struct device
*dev
)
3505 struct snd_soc_codec
*codec
;
3508 list_for_each_entry(codec
, &codec_list
, list
) {
3509 if (dev
== codec
->dev
)
3516 for (i
= 0; i
< codec
->num_dai
; i
++)
3517 snd_soc_unregister_dai(dev
);
3519 mutex_lock(&client_mutex
);
3520 list_del(&codec
->list
);
3521 mutex_unlock(&client_mutex
);
3523 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3525 snd_soc_cache_exit(codec
);
3529 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3531 static int __init
snd_soc_init(void)
3533 #ifdef CONFIG_DEBUG_FS
3534 debugfs_root
= debugfs_create_dir("asoc", NULL
);
3535 if (IS_ERR(debugfs_root
) || !debugfs_root
) {
3537 "ASoC: Failed to create debugfs directory\n");
3538 debugfs_root
= NULL
;
3541 if (!debugfs_create_file("codecs", 0444, debugfs_root
, NULL
,
3543 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3545 if (!debugfs_create_file("dais", 0444, debugfs_root
, NULL
,
3547 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3549 if (!debugfs_create_file("platforms", 0444, debugfs_root
, NULL
,
3550 &platform_list_fops
))
3551 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3554 return platform_driver_register(&soc_driver
);
3556 module_init(snd_soc_init
);
3558 static void __exit
snd_soc_exit(void)
3560 #ifdef CONFIG_DEBUG_FS
3561 debugfs_remove_recursive(debugfs_root
);
3563 platform_driver_unregister(&soc_driver
);
3565 module_exit(snd_soc_exit
);
3567 /* Module information */
3568 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3569 MODULE_DESCRIPTION("ALSA SoC Core");
3570 MODULE_LICENSE("GPL");
3571 MODULE_ALIAS("platform:soc-audio");