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/jack.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/soc.h>
40 #include <sound/initval.h>
42 #define CREATE_TRACE_POINTS
43 #include <trace/events/asoc.h>
47 static DEFINE_MUTEX(pcm_mutex
);
48 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
50 #ifdef CONFIG_DEBUG_FS
51 struct dentry
*snd_soc_debugfs_root
;
52 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
55 static DEFINE_MUTEX(client_mutex
);
56 static LIST_HEAD(card_list
);
57 static LIST_HEAD(dai_list
);
58 static LIST_HEAD(platform_list
);
59 static LIST_HEAD(codec_list
);
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)");
72 /* returns the minimum number of bytes needed to represent
73 * a particular given value */
74 static int min_bytes_needed(unsigned long val
)
79 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
82 c
= (sizeof val
* 8) - c
;
90 /* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92 static int format_register_str(struct snd_soc_codec
*codec
,
93 unsigned int reg
, char *buf
, size_t len
)
95 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
96 int regsize
= codec
->driver
->reg_word_size
* 2;
99 char regbuf
[regsize
+ 1];
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize
+ regsize
+ 2 + 1 != len
)
109 ret
= snd_soc_read(codec
, reg
);
111 memset(regbuf
, 'X', regsize
);
112 regbuf
[regsize
] = '\0';
114 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
117 /* prepare the buffer */
118 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf
, tmpbuf
, len
);
125 /* codec register dump */
126 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
127 size_t count
, loff_t pos
)
130 int wordsize
, regsize
;
135 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
136 regsize
= codec
->driver
->reg_word_size
* 2;
138 len
= wordsize
+ regsize
+ 2 + 1;
140 if (!codec
->driver
->reg_cache_size
)
143 if (codec
->driver
->reg_cache_step
)
144 step
= codec
->driver
->reg_cache_step
;
146 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
147 if (codec
->readable_register
&& !codec
->readable_register(codec
, i
))
149 if (codec
->driver
->display_register
) {
150 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
151 PAGE_SIZE
- count
, i
);
153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
156 if (total
+ len
>= count
- 1)
158 format_register_str(codec
, i
, buf
+ total
, len
);
165 total
= min(total
, count
- 1);
170 static ssize_t
codec_reg_show(struct device
*dev
,
171 struct device_attribute
*attr
, char *buf
)
173 struct snd_soc_pcm_runtime
*rtd
=
174 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
176 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
179 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
181 static ssize_t
pmdown_time_show(struct device
*dev
,
182 struct device_attribute
*attr
, char *buf
)
184 struct snd_soc_pcm_runtime
*rtd
=
185 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
187 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
190 static ssize_t
pmdown_time_set(struct device
*dev
,
191 struct device_attribute
*attr
,
192 const char *buf
, size_t count
)
194 struct snd_soc_pcm_runtime
*rtd
=
195 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
198 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
205 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
207 #ifdef CONFIG_DEBUG_FS
208 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
210 file
->private_data
= inode
->i_private
;
214 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
215 size_t count
, loff_t
*ppos
)
218 struct snd_soc_codec
*codec
= file
->private_data
;
221 if (*ppos
< 0 || !count
)
224 buf
= kmalloc(count
, GFP_KERNEL
);
228 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
230 if (copy_to_user(user_buf
, buf
, ret
)) {
241 static ssize_t
codec_reg_write_file(struct file
*file
,
242 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
247 unsigned long reg
, value
;
249 struct snd_soc_codec
*codec
= file
->private_data
;
251 buf_size
= min(count
, (sizeof(buf
)-1));
252 if (copy_from_user(buf
, user_buf
, buf_size
))
256 if (codec
->driver
->reg_cache_step
)
257 step
= codec
->driver
->reg_cache_step
;
259 while (*start
== ' ')
261 reg
= simple_strtoul(start
, &start
, 16);
262 while (*start
== ' ')
264 if (strict_strtoul(start
, 16, &value
))
267 /* Userspace has been fiddling around behind the kernel's back */
268 add_taint(TAINT_USER
);
270 snd_soc_write(codec
, reg
, value
);
274 static const struct file_operations codec_reg_fops
= {
275 .open
= codec_reg_open_file
,
276 .read
= codec_reg_read_file
,
277 .write
= codec_reg_write_file
,
278 .llseek
= default_llseek
,
281 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
283 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
285 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
287 if (!codec
->debugfs_codec_root
) {
289 "ASoC: Failed to create codec debugfs directory\n");
293 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
295 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
298 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
299 codec
->debugfs_codec_root
,
300 codec
, &codec_reg_fops
);
301 if (!codec
->debugfs_reg
)
303 "ASoC: Failed to create codec register debugfs file\n");
305 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
308 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
310 debugfs_remove_recursive(codec
->debugfs_codec_root
);
313 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
314 size_t count
, loff_t
*ppos
)
316 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
317 ssize_t len
, ret
= 0;
318 struct snd_soc_codec
*codec
;
323 list_for_each_entry(codec
, &codec_list
, list
) {
324 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
328 if (ret
> PAGE_SIZE
) {
335 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
342 static const struct file_operations codec_list_fops
= {
343 .read
= codec_list_read_file
,
344 .llseek
= default_llseek
,/* read accesses f_pos */
347 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
348 size_t count
, loff_t
*ppos
)
350 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
351 ssize_t len
, ret
= 0;
352 struct snd_soc_dai
*dai
;
357 list_for_each_entry(dai
, &dai_list
, list
) {
358 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
361 if (ret
> PAGE_SIZE
) {
367 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
374 static const struct file_operations dai_list_fops
= {
375 .read
= dai_list_read_file
,
376 .llseek
= default_llseek
,/* read accesses f_pos */
379 static ssize_t
platform_list_read_file(struct file
*file
,
380 char __user
*user_buf
,
381 size_t count
, loff_t
*ppos
)
383 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
384 ssize_t len
, ret
= 0;
385 struct snd_soc_platform
*platform
;
390 list_for_each_entry(platform
, &platform_list
, list
) {
391 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
395 if (ret
> PAGE_SIZE
) {
401 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
408 static const struct file_operations platform_list_fops
= {
409 .read
= platform_list_read_file
,
410 .llseek
= default_llseek
,/* read accesses f_pos */
413 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
415 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
416 snd_soc_debugfs_root
);
417 if (!card
->debugfs_card_root
) {
419 "ASoC: Failed to create codec debugfs directory\n");
423 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
424 card
->debugfs_card_root
,
426 if (!card
->debugfs_pop_time
)
428 "Failed to create pop time debugfs file\n");
431 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
433 debugfs_remove_recursive(card
->debugfs_card_root
);
438 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
442 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
446 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
450 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
455 #ifdef CONFIG_SND_SOC_AC97_BUS
456 /* unregister ac97 codec */
457 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
459 if (codec
->ac97
->dev
.bus
)
460 device_unregister(&codec
->ac97
->dev
);
464 /* stop no dev release warning */
465 static void soc_ac97_device_release(struct device
*dev
){}
467 /* register ac97 codec to bus */
468 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
472 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
473 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
474 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
476 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
477 codec
->card
->snd_card
->number
, 0, codec
->name
);
478 err
= device_register(&codec
->ac97
->dev
);
480 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
481 codec
->ac97
->dev
.bus
= NULL
;
488 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
490 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
491 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
492 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
495 if (!codec_dai
->driver
->symmetric_rates
&&
496 !cpu_dai
->driver
->symmetric_rates
&&
497 !rtd
->dai_link
->symmetric_rates
)
500 /* This can happen if multiple streams are starting simultaneously -
501 * the second can need to get its constraints before the first has
502 * picked a rate. Complain and allow the application to carry on.
506 "Not enforcing symmetric_rates due to race\n");
510 dev_dbg(&rtd
->dev
, "Symmetry forces %dHz rate\n", rtd
->rate
);
512 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
513 SNDRV_PCM_HW_PARAM_RATE
,
514 rtd
->rate
, rtd
->rate
);
517 "Unable to apply rate symmetry constraint: %d\n", ret
);
525 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
526 * then initialized and any private data can be allocated. This also calls
527 * startup for the cpu DAI, platform, machine and codec DAI.
529 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
531 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
532 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
533 struct snd_soc_platform
*platform
= rtd
->platform
;
534 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
535 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
536 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
537 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
540 mutex_lock(&pcm_mutex
);
542 /* startup the audio subsystem */
543 if (cpu_dai
->driver
->ops
->startup
) {
544 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
546 printk(KERN_ERR
"asoc: can't open interface %s\n",
552 if (platform
->driver
->ops
&& platform
->driver
->ops
->open
) {
553 ret
= platform
->driver
->ops
->open(substream
);
555 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
560 if (codec_dai
->driver
->ops
->startup
) {
561 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
563 printk(KERN_ERR
"asoc: can't open codec %s\n",
569 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
570 ret
= rtd
->dai_link
->ops
->startup(substream
);
572 printk(KERN_ERR
"asoc: %s startup failed\n", rtd
->dai_link
->name
);
577 /* Check that the codec and cpu DAIs are compatible */
578 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
579 runtime
->hw
.rate_min
=
580 max(codec_dai_drv
->playback
.rate_min
,
581 cpu_dai_drv
->playback
.rate_min
);
582 runtime
->hw
.rate_max
=
583 min(codec_dai_drv
->playback
.rate_max
,
584 cpu_dai_drv
->playback
.rate_max
);
585 runtime
->hw
.channels_min
=
586 max(codec_dai_drv
->playback
.channels_min
,
587 cpu_dai_drv
->playback
.channels_min
);
588 runtime
->hw
.channels_max
=
589 min(codec_dai_drv
->playback
.channels_max
,
590 cpu_dai_drv
->playback
.channels_max
);
591 runtime
->hw
.formats
=
592 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
594 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
595 if (codec_dai_drv
->playback
.rates
596 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
597 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
598 if (cpu_dai_drv
->playback
.rates
599 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
600 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
602 runtime
->hw
.rate_min
=
603 max(codec_dai_drv
->capture
.rate_min
,
604 cpu_dai_drv
->capture
.rate_min
);
605 runtime
->hw
.rate_max
=
606 min(codec_dai_drv
->capture
.rate_max
,
607 cpu_dai_drv
->capture
.rate_max
);
608 runtime
->hw
.channels_min
=
609 max(codec_dai_drv
->capture
.channels_min
,
610 cpu_dai_drv
->capture
.channels_min
);
611 runtime
->hw
.channels_max
=
612 min(codec_dai_drv
->capture
.channels_max
,
613 cpu_dai_drv
->capture
.channels_max
);
614 runtime
->hw
.formats
=
615 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
617 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
618 if (codec_dai_drv
->capture
.rates
619 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
620 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
621 if (cpu_dai_drv
->capture
.rates
622 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
623 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
627 snd_pcm_limit_hw_rates(runtime
);
628 if (!runtime
->hw
.rates
) {
629 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
630 codec_dai
->name
, cpu_dai
->name
);
633 if (!runtime
->hw
.formats
) {
634 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
635 codec_dai
->name
, cpu_dai
->name
);
638 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
||
639 runtime
->hw
.channels_min
> runtime
->hw
.channels_max
) {
640 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
641 codec_dai
->name
, cpu_dai
->name
);
645 /* Symmetry only applies if we've already got an active stream. */
646 if (cpu_dai
->active
|| codec_dai
->active
) {
647 ret
= soc_pcm_apply_symmetry(substream
);
652 pr_debug("asoc: %s <-> %s info:\n",
653 codec_dai
->name
, cpu_dai
->name
);
654 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
655 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
656 runtime
->hw
.channels_max
);
657 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
658 runtime
->hw
.rate_max
);
660 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
661 cpu_dai
->playback_active
++;
662 codec_dai
->playback_active
++;
664 cpu_dai
->capture_active
++;
665 codec_dai
->capture_active
++;
669 rtd
->codec
->active
++;
670 mutex_unlock(&pcm_mutex
);
674 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
675 rtd
->dai_link
->ops
->shutdown(substream
);
678 if (codec_dai
->driver
->ops
->shutdown
)
679 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
682 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
683 platform
->driver
->ops
->close(substream
);
686 if (cpu_dai
->driver
->ops
->shutdown
)
687 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
689 mutex_unlock(&pcm_mutex
);
694 * Power down the audio subsystem pmdown_time msecs after close is called.
695 * This is to ensure there are no pops or clicks in between any music tracks
696 * due to DAPM power cycling.
698 static void close_delayed_work(struct work_struct
*work
)
700 struct snd_soc_pcm_runtime
*rtd
=
701 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
702 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
704 mutex_lock(&pcm_mutex
);
706 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
707 codec_dai
->driver
->playback
.stream_name
,
708 codec_dai
->playback_active
? "active" : "inactive",
709 codec_dai
->pop_wait
? "yes" : "no");
711 /* are we waiting on this codec DAI stream */
712 if (codec_dai
->pop_wait
== 1) {
713 codec_dai
->pop_wait
= 0;
714 snd_soc_dapm_stream_event(rtd
,
715 codec_dai
->driver
->playback
.stream_name
,
716 SND_SOC_DAPM_STREAM_STOP
);
719 mutex_unlock(&pcm_mutex
);
723 * Called by ALSA when a PCM substream is closed. Private data can be
724 * freed here. The cpu DAI, codec DAI, machine and platform are also
727 static int soc_codec_close(struct snd_pcm_substream
*substream
)
729 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
730 struct snd_soc_platform
*platform
= rtd
->platform
;
731 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
732 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
733 struct snd_soc_codec
*codec
= rtd
->codec
;
735 mutex_lock(&pcm_mutex
);
737 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
738 cpu_dai
->playback_active
--;
739 codec_dai
->playback_active
--;
741 cpu_dai
->capture_active
--;
742 codec_dai
->capture_active
--;
749 /* Muting the DAC suppresses artifacts caused during digital
750 * shutdown, for example from stopping clocks.
752 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
753 snd_soc_dai_digital_mute(codec_dai
, 1);
755 if (cpu_dai
->driver
->ops
->shutdown
)
756 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
758 if (codec_dai
->driver
->ops
->shutdown
)
759 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
761 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
762 rtd
->dai_link
->ops
->shutdown(substream
);
764 if (platform
->driver
->ops
&& platform
->driver
->ops
->close
)
765 platform
->driver
->ops
->close(substream
);
766 cpu_dai
->runtime
= NULL
;
768 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
769 /* start delayed pop wq here for playback streams */
770 codec_dai
->pop_wait
= 1;
771 schedule_delayed_work(&rtd
->delayed_work
,
772 msecs_to_jiffies(rtd
->pmdown_time
));
774 /* capture streams can be powered down now */
775 snd_soc_dapm_stream_event(rtd
,
776 codec_dai
->driver
->capture
.stream_name
,
777 SND_SOC_DAPM_STREAM_STOP
);
780 mutex_unlock(&pcm_mutex
);
785 * Called by ALSA when the PCM substream is prepared, can set format, sample
786 * rate, etc. This function is non atomic and can be called multiple times,
787 * it can refer to the runtime info.
789 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
791 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
792 struct snd_soc_platform
*platform
= rtd
->platform
;
793 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
794 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
797 mutex_lock(&pcm_mutex
);
799 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
800 ret
= rtd
->dai_link
->ops
->prepare(substream
);
802 printk(KERN_ERR
"asoc: machine prepare error\n");
807 if (platform
->driver
->ops
&& platform
->driver
->ops
->prepare
) {
808 ret
= platform
->driver
->ops
->prepare(substream
);
810 printk(KERN_ERR
"asoc: platform prepare error\n");
815 if (codec_dai
->driver
->ops
->prepare
) {
816 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
818 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
823 if (cpu_dai
->driver
->ops
->prepare
) {
824 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
826 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
831 /* cancel any delayed stream shutdown that is pending */
832 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
833 codec_dai
->pop_wait
) {
834 codec_dai
->pop_wait
= 0;
835 cancel_delayed_work(&rtd
->delayed_work
);
838 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
839 snd_soc_dapm_stream_event(rtd
,
840 codec_dai
->driver
->playback
.stream_name
,
841 SND_SOC_DAPM_STREAM_START
);
843 snd_soc_dapm_stream_event(rtd
,
844 codec_dai
->driver
->capture
.stream_name
,
845 SND_SOC_DAPM_STREAM_START
);
847 snd_soc_dai_digital_mute(codec_dai
, 0);
850 mutex_unlock(&pcm_mutex
);
855 * Called by ALSA when the hardware params are set by application. This
856 * function can also be called multiple times and can allocate buffers
857 * (using snd_pcm_lib_* ). It's non-atomic.
859 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
860 struct snd_pcm_hw_params
*params
)
862 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
863 struct snd_soc_platform
*platform
= rtd
->platform
;
864 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
865 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
868 mutex_lock(&pcm_mutex
);
870 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
871 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
873 printk(KERN_ERR
"asoc: machine hw_params failed\n");
878 if (codec_dai
->driver
->ops
->hw_params
) {
879 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
881 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
887 if (cpu_dai
->driver
->ops
->hw_params
) {
888 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
890 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
896 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_params
) {
897 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
899 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
905 rtd
->rate
= params_rate(params
);
908 mutex_unlock(&pcm_mutex
);
912 if (cpu_dai
->driver
->ops
->hw_free
)
913 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
916 if (codec_dai
->driver
->ops
->hw_free
)
917 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
920 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
921 rtd
->dai_link
->ops
->hw_free(substream
);
923 mutex_unlock(&pcm_mutex
);
928 * Frees resources allocated by hw_params, can be called multiple times
930 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
932 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
933 struct snd_soc_platform
*platform
= rtd
->platform
;
934 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
935 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
936 struct snd_soc_codec
*codec
= rtd
->codec
;
938 mutex_lock(&pcm_mutex
);
940 /* apply codec digital mute */
942 snd_soc_dai_digital_mute(codec_dai
, 1);
944 /* free any machine hw params */
945 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
946 rtd
->dai_link
->ops
->hw_free(substream
);
948 /* free any DMA resources */
949 if (platform
->driver
->ops
&& platform
->driver
->ops
->hw_free
)
950 platform
->driver
->ops
->hw_free(substream
);
952 /* now free hw params for the DAIs */
953 if (codec_dai
->driver
->ops
->hw_free
)
954 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
956 if (cpu_dai
->driver
->ops
->hw_free
)
957 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
959 mutex_unlock(&pcm_mutex
);
963 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
965 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
966 struct snd_soc_platform
*platform
= rtd
->platform
;
967 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
968 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
971 if (codec_dai
->driver
->ops
->trigger
) {
972 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
977 if (platform
->driver
->ops
&& platform
->driver
->ops
->trigger
) {
978 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
983 if (cpu_dai
->driver
->ops
->trigger
) {
984 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
992 * soc level wrapper for pointer callback
993 * If cpu_dai, codec_dai, platform driver has the delay callback, than
994 * the runtime->delay will be updated accordingly.
996 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
998 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
999 struct snd_soc_platform
*platform
= rtd
->platform
;
1000 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1001 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1002 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1003 snd_pcm_uframes_t offset
= 0;
1004 snd_pcm_sframes_t delay
= 0;
1006 if (platform
->driver
->ops
&& platform
->driver
->ops
->pointer
)
1007 offset
= platform
->driver
->ops
->pointer(substream
);
1009 if (cpu_dai
->driver
->ops
->delay
)
1010 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
1012 if (codec_dai
->driver
->ops
->delay
)
1013 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
1015 if (platform
->driver
->delay
)
1016 delay
+= platform
->driver
->delay(substream
, codec_dai
);
1018 runtime
->delay
= delay
;
1023 /* ASoC PCM operations */
1024 static struct snd_pcm_ops soc_pcm_ops
= {
1025 .open
= soc_pcm_open
,
1026 .close
= soc_codec_close
,
1027 .hw_params
= soc_pcm_hw_params
,
1028 .hw_free
= soc_pcm_hw_free
,
1029 .prepare
= soc_pcm_prepare
,
1030 .trigger
= soc_pcm_trigger
,
1031 .pointer
= soc_pcm_pointer
,
1034 #ifdef CONFIG_PM_SLEEP
1035 /* powers down audio subsystem for suspend */
1036 int snd_soc_suspend(struct device
*dev
)
1038 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1039 struct snd_soc_codec
*codec
;
1042 /* If the initialization of this soc device failed, there is no codec
1043 * associated with it. Just bail out in this case.
1045 if (list_empty(&card
->codec_dev_list
))
1048 /* Due to the resume being scheduled into a workqueue we could
1049 * suspend before that's finished - wait for it to complete.
1051 snd_power_lock(card
->snd_card
);
1052 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1053 snd_power_unlock(card
->snd_card
);
1055 /* we're going to block userspace touching us until resume completes */
1056 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
1058 /* mute any active DACs */
1059 for (i
= 0; i
< card
->num_rtd
; i
++) {
1060 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1061 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1063 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1066 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1067 drv
->ops
->digital_mute(dai
, 1);
1070 /* suspend all pcms */
1071 for (i
= 0; i
< card
->num_rtd
; i
++) {
1072 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1075 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
1078 if (card
->suspend_pre
)
1079 card
->suspend_pre(card
);
1081 for (i
= 0; i
< card
->num_rtd
; i
++) {
1082 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1083 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1085 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1088 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
1089 cpu_dai
->driver
->suspend(cpu_dai
);
1090 if (platform
->driver
->suspend
&& !platform
->suspended
) {
1091 platform
->driver
->suspend(cpu_dai
);
1092 platform
->suspended
= 1;
1096 /* close any waiting streams and save state */
1097 for (i
= 0; i
< card
->num_rtd
; i
++) {
1098 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
1099 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
1102 for (i
= 0; i
< card
->num_rtd
; i
++) {
1103 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1105 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1108 if (driver
->playback
.stream_name
!= NULL
)
1109 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1110 SND_SOC_DAPM_STREAM_SUSPEND
);
1112 if (driver
->capture
.stream_name
!= NULL
)
1113 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1114 SND_SOC_DAPM_STREAM_SUSPEND
);
1117 /* suspend all CODECs */
1118 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
1119 /* If there are paths active then the CODEC will be held with
1120 * bias _ON and should not be suspended. */
1121 if (!codec
->suspended
&& codec
->driver
->suspend
) {
1122 switch (codec
->dapm
.bias_level
) {
1123 case SND_SOC_BIAS_STANDBY
:
1124 case SND_SOC_BIAS_OFF
:
1125 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
1126 codec
->suspended
= 1;
1129 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
1135 for (i
= 0; i
< card
->num_rtd
; i
++) {
1136 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1138 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1141 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
1142 cpu_dai
->driver
->suspend(cpu_dai
);
1145 if (card
->suspend_post
)
1146 card
->suspend_post(card
);
1150 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
1152 /* deferred resume work, so resume can complete before we finished
1153 * setting our codec back up, which can be very slow on I2C
1155 static void soc_resume_deferred(struct work_struct
*work
)
1157 struct snd_soc_card
*card
=
1158 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
1159 struct snd_soc_codec
*codec
;
1162 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1163 * so userspace apps are blocked from touching us
1166 dev_dbg(card
->dev
, "starting resume work\n");
1168 /* Bring us up into D2 so that DAPM starts enabling things */
1169 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
1171 if (card
->resume_pre
)
1172 card
->resume_pre(card
);
1174 /* resume AC97 DAIs */
1175 for (i
= 0; i
< card
->num_rtd
; i
++) {
1176 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1178 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1181 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1182 cpu_dai
->driver
->resume(cpu_dai
);
1185 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
1186 /* If the CODEC was idle over suspend then it will have been
1187 * left with bias OFF or STANDBY and suspended so we must now
1188 * resume. Otherwise the suspend was suppressed.
1190 if (codec
->driver
->resume
&& codec
->suspended
) {
1191 switch (codec
->dapm
.bias_level
) {
1192 case SND_SOC_BIAS_STANDBY
:
1193 case SND_SOC_BIAS_OFF
:
1194 codec
->driver
->resume(codec
);
1195 codec
->suspended
= 0;
1198 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1204 for (i
= 0; i
< card
->num_rtd
; i
++) {
1205 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1207 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1210 if (driver
->playback
.stream_name
!= NULL
)
1211 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1212 SND_SOC_DAPM_STREAM_RESUME
);
1214 if (driver
->capture
.stream_name
!= NULL
)
1215 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1216 SND_SOC_DAPM_STREAM_RESUME
);
1219 /* unmute any active DACs */
1220 for (i
= 0; i
< card
->num_rtd
; i
++) {
1221 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1222 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1224 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1227 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1228 drv
->ops
->digital_mute(dai
, 0);
1231 for (i
= 0; i
< card
->num_rtd
; i
++) {
1232 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1233 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1235 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1238 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1239 cpu_dai
->driver
->resume(cpu_dai
);
1240 if (platform
->driver
->resume
&& platform
->suspended
) {
1241 platform
->driver
->resume(cpu_dai
);
1242 platform
->suspended
= 0;
1246 if (card
->resume_post
)
1247 card
->resume_post(card
);
1249 dev_dbg(card
->dev
, "resume work completed\n");
1251 /* userspace can access us now we are back as we were before */
1252 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1255 /* powers up audio subsystem after a suspend */
1256 int snd_soc_resume(struct device
*dev
)
1258 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1261 /* AC97 devices might have other drivers hanging off them so
1262 * need to resume immediately. Other drivers don't have that
1263 * problem and may take a substantial amount of time to resume
1264 * due to I/O costs and anti-pop so handle them out of line.
1266 for (i
= 0; i
< card
->num_rtd
; i
++) {
1267 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1268 if (cpu_dai
->driver
->ac97_control
) {
1269 dev_dbg(dev
, "Resuming AC97 immediately\n");
1270 soc_resume_deferred(&card
->deferred_resume_work
);
1272 dev_dbg(dev
, "Scheduling resume work\n");
1273 if (!schedule_work(&card
->deferred_resume_work
))
1274 dev_err(dev
, "resume work item may be lost\n");
1280 EXPORT_SYMBOL_GPL(snd_soc_resume
);
1282 #define snd_soc_suspend NULL
1283 #define snd_soc_resume NULL
1286 static struct snd_soc_dai_ops null_dai_ops
= {
1289 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1291 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1292 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1293 struct snd_soc_codec
*codec
;
1294 struct snd_soc_platform
*platform
;
1295 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1296 const char *platform_name
;
1300 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1302 /* do we already have the CPU DAI for this link ? */
1306 /* no, then find CPU DAI from registered DAIs*/
1307 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1308 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1310 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1313 rtd
->cpu_dai
= cpu_dai
;
1317 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1318 dai_link
->cpu_dai_name
);
1321 /* do we already have the CODEC for this link ? */
1326 /* no, then find CODEC from registered CODECs*/
1327 list_for_each_entry(codec
, &codec_list
, list
) {
1328 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1331 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1332 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1333 if (codec
->dev
== codec_dai
->dev
&&
1334 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1335 rtd
->codec_dai
= codec_dai
;
1339 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1340 dai_link
->codec_dai_name
);
1345 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1346 dai_link
->codec_name
);
1349 /* do we need a platform? */
1353 /* if there's no platform we match on the empty platform */
1354 platform_name
= dai_link
->platform_name
;
1356 platform_name
= "snd-soc-dummy";
1358 /* no, then find one from the set of registered platforms */
1359 list_for_each_entry(platform
, &platform_list
, list
) {
1360 if (!strcmp(platform
->name
, platform_name
)) {
1361 rtd
->platform
= platform
;
1366 dev_dbg(card
->dev
, "platform %s not registered\n",
1367 dai_link
->platform_name
);
1371 /* mark rtd as complete if we found all 4 of our client devices */
1372 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1379 static void soc_remove_codec(struct snd_soc_codec
*codec
)
1383 if (codec
->driver
->remove
) {
1384 err
= codec
->driver
->remove(codec
);
1387 "asoc: failed to remove %s: %d\n",
1391 /* Make sure all DAPM widgets are freed */
1392 snd_soc_dapm_free(&codec
->dapm
);
1394 soc_cleanup_codec_debugfs(codec
);
1396 list_del(&codec
->card_list
);
1397 module_put(codec
->dev
->driver
->owner
);
1400 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1402 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1403 struct snd_soc_codec
*codec
= rtd
->codec
;
1404 struct snd_soc_platform
*platform
= rtd
->platform
;
1405 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1408 /* unregister the rtd device */
1409 if (rtd
->dev_registered
) {
1410 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1411 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1412 device_unregister(&rtd
->dev
);
1413 rtd
->dev_registered
= 0;
1416 /* remove the CODEC DAI */
1417 if (codec_dai
&& codec_dai
->probed
) {
1418 if (codec_dai
->driver
->remove
) {
1419 err
= codec_dai
->driver
->remove(codec_dai
);
1421 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1423 codec_dai
->probed
= 0;
1424 list_del(&codec_dai
->card_list
);
1427 /* remove the platform */
1428 if (platform
&& platform
->probed
) {
1429 if (platform
->driver
->remove
) {
1430 err
= platform
->driver
->remove(platform
);
1432 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1434 platform
->probed
= 0;
1435 list_del(&platform
->card_list
);
1436 module_put(platform
->dev
->driver
->owner
);
1439 /* remove the CODEC */
1440 if (codec
&& codec
->probed
)
1441 soc_remove_codec(codec
);
1443 /* remove the cpu_dai */
1444 if (cpu_dai
&& cpu_dai
->probed
) {
1445 if (cpu_dai
->driver
->remove
) {
1446 err
= cpu_dai
->driver
->remove(cpu_dai
);
1448 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1450 cpu_dai
->probed
= 0;
1451 list_del(&cpu_dai
->card_list
);
1452 module_put(cpu_dai
->dev
->driver
->owner
);
1456 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1460 for (i
= 0; i
< card
->num_rtd
; i
++)
1461 soc_remove_dai_link(card
, i
);
1466 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1467 struct snd_soc_codec
*codec
)
1471 if (card
->codec_conf
== NULL
)
1474 for (i
= 0; i
< card
->num_configs
; i
++) {
1475 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1476 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1477 codec
->name_prefix
= map
->name_prefix
;
1483 static int soc_probe_codec(struct snd_soc_card
*card
,
1484 struct snd_soc_codec
*codec
)
1487 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1490 codec
->dapm
.card
= card
;
1491 soc_set_name_prefix(card
, codec
);
1493 if (!try_module_get(codec
->dev
->driver
->owner
))
1496 if (driver
->probe
) {
1497 ret
= driver
->probe(codec
);
1500 "asoc: failed to probe CODEC %s: %d\n",
1506 if (driver
->controls
)
1507 snd_soc_add_controls(codec
, driver
->controls
,
1508 driver
->num_controls
);
1509 if (driver
->dapm_widgets
)
1510 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1511 driver
->num_dapm_widgets
);
1512 if (driver
->dapm_routes
)
1513 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1514 driver
->num_dapm_routes
);
1516 soc_init_codec_debugfs(codec
);
1518 /* mark codec as probed and add to card codec list */
1520 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1521 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1526 module_put(codec
->dev
->driver
->owner
);
1531 static void rtd_release(struct device
*dev
) {}
1533 static int soc_post_component_init(struct snd_soc_card
*card
,
1534 struct snd_soc_codec
*codec
,
1535 int num
, int dailess
)
1537 struct snd_soc_dai_link
*dai_link
= NULL
;
1538 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1539 struct snd_soc_pcm_runtime
*rtd
;
1540 const char *temp
, *name
;
1544 dai_link
= &card
->dai_link
[num
];
1545 rtd
= &card
->rtd
[num
];
1546 name
= dai_link
->name
;
1548 aux_dev
= &card
->aux_dev
[num
];
1549 rtd
= &card
->rtd_aux
[num
];
1550 name
= aux_dev
->name
;
1554 /* machine controls, routes and widgets are not prefixed */
1555 temp
= codec
->name_prefix
;
1556 codec
->name_prefix
= NULL
;
1558 /* do machine specific initialization */
1559 if (!dailess
&& dai_link
->init
)
1560 ret
= dai_link
->init(rtd
);
1561 else if (dailess
&& aux_dev
->init
)
1562 ret
= aux_dev
->init(&codec
->dapm
);
1564 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1567 codec
->name_prefix
= temp
;
1569 /* Make sure all DAPM widgets are instantiated */
1570 snd_soc_dapm_new_widgets(&codec
->dapm
);
1572 /* register the rtd device */
1574 rtd
->dev
.parent
= card
->dev
;
1575 rtd
->dev
.release
= rtd_release
;
1576 rtd
->dev
.init_name
= name
;
1577 ret
= device_register(&rtd
->dev
);
1580 "asoc: failed to register runtime device: %d\n", ret
);
1583 rtd
->dev_registered
= 1;
1585 /* add DAPM sysfs entries for this codec */
1586 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1589 "asoc: failed to add codec dapm sysfs entries: %d\n",
1592 /* add codec sysfs entries */
1593 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1596 "asoc: failed to add codec sysfs files: %d\n", ret
);
1601 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1603 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1604 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1605 struct snd_soc_codec
*codec
= rtd
->codec
;
1606 struct snd_soc_platform
*platform
= rtd
->platform
;
1607 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1610 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1612 /* config components */
1613 codec_dai
->codec
= codec
;
1614 cpu_dai
->platform
= platform
;
1615 codec_dai
->card
= card
;
1616 cpu_dai
->card
= card
;
1618 /* set default power off timeout */
1619 rtd
->pmdown_time
= pmdown_time
;
1621 /* probe the cpu_dai */
1622 if (!cpu_dai
->probed
) {
1623 if (cpu_dai
->driver
->probe
) {
1624 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1626 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1631 cpu_dai
->probed
= 1;
1632 /* mark cpu_dai as probed and add to card cpu_dai list */
1633 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1636 /* probe the CODEC */
1637 if (!codec
->probed
) {
1638 ret
= soc_probe_codec(card
, codec
);
1643 /* probe the platform */
1644 if (!platform
->probed
) {
1645 if (!try_module_get(platform
->dev
->driver
->owner
))
1648 if (platform
->driver
->probe
) {
1649 ret
= platform
->driver
->probe(platform
);
1651 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1653 module_put(platform
->dev
->driver
->owner
);
1657 /* mark platform as probed and add to card platform list */
1658 platform
->probed
= 1;
1659 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1662 /* probe the CODEC DAI */
1663 if (!codec_dai
->probed
) {
1664 if (codec_dai
->driver
->probe
) {
1665 ret
= codec_dai
->driver
->probe(codec_dai
);
1667 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1673 /* mark cpu_dai as probed and add to card cpu_dai list */
1674 codec_dai
->probed
= 1;
1675 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1678 /* DAPM dai link stream work */
1679 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1681 ret
= soc_post_component_init(card
, codec
, num
, 0);
1685 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1687 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1689 /* create the pcm */
1690 ret
= soc_new_pcm(rtd
, num
);
1692 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1696 /* add platform data for AC97 devices */
1697 if (rtd
->codec_dai
->driver
->ac97_control
)
1698 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1703 #ifdef CONFIG_SND_SOC_AC97_BUS
1704 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1708 /* Only instantiate AC97 if not already done by the adaptor
1709 * for the generic AC97 subsystem.
1711 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1713 * It is possible that the AC97 device is already registered to
1714 * the device subsystem. This happens when the device is created
1715 * via snd_ac97_mixer(). Currently only SoC codec that does so
1716 * is the generic AC97 glue but others migh emerge.
1718 * In those cases we don't try to register the device again.
1720 if (!rtd
->codec
->ac97_created
)
1723 ret
= soc_ac97_dev_register(rtd
->codec
);
1725 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1729 rtd
->codec
->ac97_registered
= 1;
1734 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1736 if (codec
->ac97_registered
) {
1737 soc_ac97_dev_unregister(codec
);
1738 codec
->ac97_registered
= 0;
1743 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1745 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1746 struct snd_soc_codec
*codec
;
1749 /* find CODEC from registered CODECs*/
1750 list_for_each_entry(codec
, &codec_list
, list
) {
1751 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1752 if (codec
->probed
) {
1754 "asoc: codec already probed");
1761 /* codec not found */
1762 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1766 ret
= soc_probe_codec(card
, codec
);
1770 ret
= soc_post_component_init(card
, codec
, num
, 1);
1776 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1778 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1779 struct snd_soc_codec
*codec
= rtd
->codec
;
1781 /* unregister the rtd device */
1782 if (rtd
->dev_registered
) {
1783 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1784 device_unregister(&rtd
->dev
);
1785 rtd
->dev_registered
= 0;
1788 if (codec
&& codec
->probed
)
1789 soc_remove_codec(codec
);
1792 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1793 enum snd_soc_compress_type compress_type
)
1797 if (codec
->cache_init
)
1800 /* override the compress_type if necessary */
1801 if (compress_type
&& codec
->compress_type
!= compress_type
)
1802 codec
->compress_type
= compress_type
;
1803 ret
= snd_soc_cache_init(codec
);
1805 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1809 codec
->cache_init
= 1;
1813 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1815 struct snd_soc_codec
*codec
;
1816 struct snd_soc_codec_conf
*codec_conf
;
1817 enum snd_soc_compress_type compress_type
;
1820 mutex_lock(&card
->mutex
);
1822 if (card
->instantiated
) {
1823 mutex_unlock(&card
->mutex
);
1828 for (i
= 0; i
< card
->num_links
; i
++)
1829 soc_bind_dai_link(card
, i
);
1831 /* bind completed ? */
1832 if (card
->num_rtd
!= card
->num_links
) {
1833 mutex_unlock(&card
->mutex
);
1837 /* initialize the register cache for each available codec */
1838 list_for_each_entry(codec
, &codec_list
, list
) {
1839 if (codec
->cache_init
)
1841 /* by default we don't override the compress_type */
1843 /* check to see if we need to override the compress_type */
1844 for (i
= 0; i
< card
->num_configs
; ++i
) {
1845 codec_conf
= &card
->codec_conf
[i
];
1846 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1847 compress_type
= codec_conf
->compress_type
;
1848 if (compress_type
&& compress_type
1849 != codec
->compress_type
)
1853 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1855 mutex_unlock(&card
->mutex
);
1860 /* card bind complete so register a sound card */
1861 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1862 card
->owner
, 0, &card
->snd_card
);
1864 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1866 mutex_unlock(&card
->mutex
);
1869 card
->snd_card
->dev
= card
->dev
;
1871 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1872 card
->dapm
.dev
= card
->dev
;
1873 card
->dapm
.card
= card
;
1874 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1876 #ifdef CONFIG_PM_SLEEP
1877 /* deferred resume work */
1878 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1881 if (card
->dapm_widgets
)
1882 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1883 card
->num_dapm_widgets
);
1885 /* initialise the sound card only once */
1887 ret
= card
->probe(card
);
1889 goto card_probe_error
;
1892 for (i
= 0; i
< card
->num_links
; i
++) {
1893 ret
= soc_probe_dai_link(card
, i
);
1895 pr_err("asoc: failed to instantiate card %s: %d\n",
1901 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1902 ret
= soc_probe_aux_dev(card
, i
);
1904 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1906 goto probe_aux_dev_err
;
1910 /* We should have a non-codec control add function but we don't */
1912 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1913 struct snd_soc_codec
,
1916 card
->num_controls
);
1918 if (card
->dapm_routes
)
1919 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1920 card
->num_dapm_routes
);
1922 #ifdef CONFIG_DEBUG_FS
1923 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1926 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1928 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1931 if (card
->late_probe
) {
1932 ret
= card
->late_probe(card
);
1934 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1936 goto probe_aux_dev_err
;
1940 ret
= snd_card_register(card
->snd_card
);
1942 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1943 goto probe_aux_dev_err
;
1946 #ifdef CONFIG_SND_SOC_AC97_BUS
1947 /* register any AC97 codecs */
1948 for (i
= 0; i
< card
->num_rtd
; i
++) {
1949 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1951 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1953 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1954 goto probe_aux_dev_err
;
1959 card
->instantiated
= 1;
1960 mutex_unlock(&card
->mutex
);
1964 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1965 soc_remove_aux_dev(card
, i
);
1968 soc_remove_dai_links(card
);
1974 snd_card_free(card
->snd_card
);
1976 mutex_unlock(&card
->mutex
);
1980 * Attempt to initialise any uninitialised cards. Must be called with
1983 static void snd_soc_instantiate_cards(void)
1985 struct snd_soc_card
*card
;
1986 list_for_each_entry(card
, &card_list
, list
)
1987 snd_soc_instantiate_card(card
);
1990 /* probes a new socdev */
1991 static int soc_probe(struct platform_device
*pdev
)
1993 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1997 * no card, so machine driver should be registering card
1998 * we should not be here in that case so ret error
2003 /* Bodge while we unpick instantiation */
2004 card
->dev
= &pdev
->dev
;
2006 ret
= snd_soc_register_card(card
);
2008 dev_err(&pdev
->dev
, "Failed to register card\n");
2015 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2019 /* make sure any delayed work runs */
2020 for (i
= 0; i
< card
->num_rtd
; i
++) {
2021 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2022 flush_delayed_work_sync(&rtd
->delayed_work
);
2025 /* remove auxiliary devices */
2026 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2027 soc_remove_aux_dev(card
, i
);
2029 /* remove and free each DAI */
2030 soc_remove_dai_links(card
);
2032 soc_cleanup_card_debugfs(card
);
2034 /* remove the card */
2038 snd_soc_dapm_free(&card
->dapm
);
2041 snd_card_free(card
->snd_card
);
2046 /* removes a socdev */
2047 static int soc_remove(struct platform_device
*pdev
)
2049 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2051 snd_soc_unregister_card(card
);
2055 int snd_soc_poweroff(struct device
*dev
)
2057 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2060 if (!card
->instantiated
)
2063 /* Flush out pmdown_time work - we actually do want to run it
2064 * now, we're shutting down so no imminent restart. */
2065 for (i
= 0; i
< card
->num_rtd
; i
++) {
2066 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2067 flush_delayed_work_sync(&rtd
->delayed_work
);
2070 snd_soc_dapm_shutdown(card
);
2074 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2076 const struct dev_pm_ops snd_soc_pm_ops
= {
2077 .suspend
= snd_soc_suspend
,
2078 .resume
= snd_soc_resume
,
2079 .poweroff
= snd_soc_poweroff
,
2081 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2083 /* ASoC platform driver */
2084 static struct platform_driver soc_driver
= {
2086 .name
= "soc-audio",
2087 .owner
= THIS_MODULE
,
2088 .pm
= &snd_soc_pm_ops
,
2091 .remove
= soc_remove
,
2094 /* create a new pcm */
2095 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2097 struct snd_soc_codec
*codec
= rtd
->codec
;
2098 struct snd_soc_platform
*platform
= rtd
->platform
;
2099 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
2100 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2101 struct snd_pcm
*pcm
;
2103 int ret
= 0, playback
= 0, capture
= 0;
2105 /* check client and interface hw capabilities */
2106 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2107 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
2109 if (codec_dai
->driver
->playback
.channels_min
)
2111 if (codec_dai
->driver
->capture
.channels_min
)
2114 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
2115 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
2116 num
, playback
, capture
, &pcm
);
2118 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
2123 pcm
->private_data
= rtd
;
2124 if (platform
->driver
->ops
) {
2125 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
2126 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
2127 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
2128 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
2129 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
2130 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
2131 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
2135 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
2138 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
2140 if (platform
->driver
->pcm_new
) {
2141 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
,
2144 pr_err("asoc: platform pcm constructor failed\n");
2149 pcm
->private_free
= platform
->driver
->pcm_free
;
2150 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
2156 * snd_soc_codec_volatile_register: Report if a register is volatile.
2158 * @codec: CODEC to query.
2159 * @reg: Register to query.
2161 * Boolean function indiciating if a CODEC register is volatile.
2163 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
2166 if (codec
->volatile_register
)
2167 return codec
->volatile_register(codec
, reg
);
2171 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
2174 * snd_soc_codec_readable_register: Report if a register is readable.
2176 * @codec: CODEC to query.
2177 * @reg: Register to query.
2179 * Boolean function indicating if a CODEC register is readable.
2181 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
2184 if (codec
->readable_register
)
2185 return codec
->readable_register(codec
, reg
);
2189 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
2192 * snd_soc_codec_writable_register: Report if a register is writable.
2194 * @codec: CODEC to query.
2195 * @reg: Register to query.
2197 * Boolean function indicating if a CODEC register is writable.
2199 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2202 if (codec
->writable_register
)
2203 return codec
->writable_register(codec
, reg
);
2207 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2210 * snd_soc_new_ac97_codec - initailise AC97 device
2211 * @codec: audio codec
2212 * @ops: AC97 bus operations
2213 * @num: AC97 codec number
2215 * Initialises AC97 codec resources for use by ad-hoc devices only.
2217 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2218 struct snd_ac97_bus_ops
*ops
, int num
)
2220 mutex_lock(&codec
->mutex
);
2222 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2223 if (codec
->ac97
== NULL
) {
2224 mutex_unlock(&codec
->mutex
);
2228 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2229 if (codec
->ac97
->bus
== NULL
) {
2232 mutex_unlock(&codec
->mutex
);
2236 codec
->ac97
->bus
->ops
= ops
;
2237 codec
->ac97
->num
= num
;
2240 * Mark the AC97 device to be created by us. This way we ensure that the
2241 * device will be registered with the device subsystem later on.
2243 codec
->ac97_created
= 1;
2245 mutex_unlock(&codec
->mutex
);
2248 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2251 * snd_soc_free_ac97_codec - free AC97 codec device
2252 * @codec: audio codec
2254 * Frees AC97 codec device resources.
2256 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2258 mutex_lock(&codec
->mutex
);
2259 #ifdef CONFIG_SND_SOC_AC97_BUS
2260 soc_unregister_ac97_dai_link(codec
);
2262 kfree(codec
->ac97
->bus
);
2265 codec
->ac97_created
= 0;
2266 mutex_unlock(&codec
->mutex
);
2268 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2270 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2274 ret
= codec
->read(codec
, reg
);
2275 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2276 trace_snd_soc_reg_read(codec
, reg
, ret
);
2280 EXPORT_SYMBOL_GPL(snd_soc_read
);
2282 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2283 unsigned int reg
, unsigned int val
)
2285 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2286 trace_snd_soc_reg_write(codec
, reg
, val
);
2287 return codec
->write(codec
, reg
, val
);
2289 EXPORT_SYMBOL_GPL(snd_soc_write
);
2291 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2292 unsigned int reg
, const void *data
, size_t len
)
2294 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2296 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2299 * snd_soc_update_bits - update codec register bits
2300 * @codec: audio codec
2301 * @reg: codec register
2302 * @mask: register mask
2305 * Writes new register value.
2307 * Returns 1 for change, 0 for no change, or negative error code.
2309 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2310 unsigned int mask
, unsigned int value
)
2313 unsigned int old
, new;
2316 ret
= snd_soc_read(codec
, reg
);
2321 new = (old
& ~mask
) | value
;
2322 change
= old
!= new;
2324 ret
= snd_soc_write(codec
, reg
, new);
2331 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2334 * snd_soc_update_bits_locked - update codec register bits
2335 * @codec: audio codec
2336 * @reg: codec register
2337 * @mask: register mask
2340 * Writes new register value, and takes the codec mutex.
2342 * Returns 1 for change else 0.
2344 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2345 unsigned short reg
, unsigned int mask
,
2350 mutex_lock(&codec
->mutex
);
2351 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2352 mutex_unlock(&codec
->mutex
);
2356 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2359 * snd_soc_test_bits - test register for change
2360 * @codec: audio codec
2361 * @reg: codec register
2362 * @mask: register mask
2365 * Tests a register with a new value and checks if the new value is
2366 * different from the old value.
2368 * Returns 1 for change else 0.
2370 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2371 unsigned int mask
, unsigned int value
)
2374 unsigned int old
, new;
2376 old
= snd_soc_read(codec
, reg
);
2377 new = (old
& ~mask
) | value
;
2378 change
= old
!= new;
2382 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2385 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2386 * @substream: the pcm substream
2387 * @hw: the hardware parameters
2389 * Sets the substream runtime hardware parameters.
2391 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2392 const struct snd_pcm_hardware
*hw
)
2394 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2395 runtime
->hw
.info
= hw
->info
;
2396 runtime
->hw
.formats
= hw
->formats
;
2397 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2398 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2399 runtime
->hw
.periods_min
= hw
->periods_min
;
2400 runtime
->hw
.periods_max
= hw
->periods_max
;
2401 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2402 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2405 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2408 * snd_soc_cnew - create new control
2409 * @_template: control template
2410 * @data: control private data
2411 * @long_name: control long name
2412 * @prefix: control name prefix
2414 * Create a new mixer control from a template control.
2416 * Returns 0 for success, else error.
2418 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2419 void *data
, char *long_name
,
2422 struct snd_kcontrol_new
template;
2423 struct snd_kcontrol
*kcontrol
;
2427 memcpy(&template, _template
, sizeof(template));
2431 long_name
= template.name
;
2434 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2435 name
= kmalloc(name_len
, GFP_ATOMIC
);
2439 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2441 template.name
= name
;
2443 template.name
= long_name
;
2446 kcontrol
= snd_ctl_new1(&template, data
);
2452 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2455 * snd_soc_add_controls - add an array of controls to a codec.
2456 * Convienience function to add a list of controls. Many codecs were
2457 * duplicating this code.
2459 * @codec: codec to add controls to
2460 * @controls: array of controls to add
2461 * @num_controls: number of elements in the array
2463 * Return 0 for success, else error.
2465 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2466 const struct snd_kcontrol_new
*controls
, int num_controls
)
2468 struct snd_card
*card
= codec
->card
->snd_card
;
2471 for (i
= 0; i
< num_controls
; i
++) {
2472 const struct snd_kcontrol_new
*control
= &controls
[i
];
2473 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
2475 codec
->name_prefix
));
2477 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2478 codec
->name
, control
->name
, err
);
2485 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2488 * snd_soc_info_enum_double - enumerated double mixer info callback
2489 * @kcontrol: mixer control
2490 * @uinfo: control element information
2492 * Callback to provide information about a double enumerated
2495 * Returns 0 for success.
2497 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2498 struct snd_ctl_elem_info
*uinfo
)
2500 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2502 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2503 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2504 uinfo
->value
.enumerated
.items
= e
->max
;
2506 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2507 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2508 strcpy(uinfo
->value
.enumerated
.name
,
2509 e
->texts
[uinfo
->value
.enumerated
.item
]);
2512 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2515 * snd_soc_get_enum_double - enumerated double mixer get callback
2516 * @kcontrol: mixer control
2517 * @ucontrol: control element information
2519 * Callback to get the value of a double enumerated mixer.
2521 * Returns 0 for success.
2523 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2524 struct snd_ctl_elem_value
*ucontrol
)
2526 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2527 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2528 unsigned int val
, bitmask
;
2530 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2532 val
= snd_soc_read(codec
, e
->reg
);
2533 ucontrol
->value
.enumerated
.item
[0]
2534 = (val
>> e
->shift_l
) & (bitmask
- 1);
2535 if (e
->shift_l
!= e
->shift_r
)
2536 ucontrol
->value
.enumerated
.item
[1] =
2537 (val
>> e
->shift_r
) & (bitmask
- 1);
2541 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2544 * snd_soc_put_enum_double - enumerated double mixer put callback
2545 * @kcontrol: mixer control
2546 * @ucontrol: control element information
2548 * Callback to set the value of a double enumerated mixer.
2550 * Returns 0 for success.
2552 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2553 struct snd_ctl_elem_value
*ucontrol
)
2555 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2556 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2558 unsigned int mask
, bitmask
;
2560 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2562 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2564 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2565 mask
= (bitmask
- 1) << e
->shift_l
;
2566 if (e
->shift_l
!= e
->shift_r
) {
2567 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2569 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2570 mask
|= (bitmask
- 1) << e
->shift_r
;
2573 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2575 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2578 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2579 * @kcontrol: mixer control
2580 * @ucontrol: control element information
2582 * Callback to get the value of a double semi enumerated mixer.
2584 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2585 * used for handling bitfield coded enumeration for example.
2587 * Returns 0 for success.
2589 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2590 struct snd_ctl_elem_value
*ucontrol
)
2592 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2593 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2594 unsigned int reg_val
, val
, mux
;
2596 reg_val
= snd_soc_read(codec
, e
->reg
);
2597 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2598 for (mux
= 0; mux
< e
->max
; mux
++) {
2599 if (val
== e
->values
[mux
])
2602 ucontrol
->value
.enumerated
.item
[0] = mux
;
2603 if (e
->shift_l
!= e
->shift_r
) {
2604 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2605 for (mux
= 0; mux
< e
->max
; mux
++) {
2606 if (val
== e
->values
[mux
])
2609 ucontrol
->value
.enumerated
.item
[1] = mux
;
2614 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2617 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2618 * @kcontrol: mixer control
2619 * @ucontrol: control element information
2621 * Callback to set the value of a double semi enumerated mixer.
2623 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2624 * used for handling bitfield coded enumeration for example.
2626 * Returns 0 for success.
2628 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2629 struct snd_ctl_elem_value
*ucontrol
)
2631 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2632 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2636 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2638 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2639 mask
= e
->mask
<< e
->shift_l
;
2640 if (e
->shift_l
!= e
->shift_r
) {
2641 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2643 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2644 mask
|= e
->mask
<< e
->shift_r
;
2647 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2649 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2652 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2653 * @kcontrol: mixer control
2654 * @uinfo: control element information
2656 * Callback to provide information about an external enumerated
2659 * Returns 0 for success.
2661 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2662 struct snd_ctl_elem_info
*uinfo
)
2664 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2666 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2668 uinfo
->value
.enumerated
.items
= e
->max
;
2670 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2671 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2672 strcpy(uinfo
->value
.enumerated
.name
,
2673 e
->texts
[uinfo
->value
.enumerated
.item
]);
2676 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2679 * snd_soc_info_volsw_ext - external single mixer info callback
2680 * @kcontrol: mixer control
2681 * @uinfo: control element information
2683 * Callback to provide information about a single external mixer control.
2685 * Returns 0 for success.
2687 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2688 struct snd_ctl_elem_info
*uinfo
)
2690 int max
= kcontrol
->private_value
;
2692 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2693 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2695 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2698 uinfo
->value
.integer
.min
= 0;
2699 uinfo
->value
.integer
.max
= max
;
2702 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2705 * snd_soc_info_volsw - single mixer info callback
2706 * @kcontrol: mixer control
2707 * @uinfo: control element information
2709 * Callback to provide information about a single mixer control.
2711 * Returns 0 for success.
2713 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2714 struct snd_ctl_elem_info
*uinfo
)
2716 struct soc_mixer_control
*mc
=
2717 (struct soc_mixer_control
*)kcontrol
->private_value
;
2719 unsigned int shift
= mc
->shift
;
2720 unsigned int rshift
= mc
->rshift
;
2722 if (!mc
->platform_max
)
2723 mc
->platform_max
= mc
->max
;
2724 platform_max
= mc
->platform_max
;
2726 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2727 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2729 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2731 uinfo
->count
= shift
== rshift
? 1 : 2;
2732 uinfo
->value
.integer
.min
= 0;
2733 uinfo
->value
.integer
.max
= platform_max
;
2736 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2739 * snd_soc_get_volsw - single mixer get callback
2740 * @kcontrol: mixer control
2741 * @ucontrol: control element information
2743 * Callback to get the value of a single mixer control.
2745 * Returns 0 for success.
2747 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2748 struct snd_ctl_elem_value
*ucontrol
)
2750 struct soc_mixer_control
*mc
=
2751 (struct soc_mixer_control
*)kcontrol
->private_value
;
2752 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2753 unsigned int reg
= mc
->reg
;
2754 unsigned int shift
= mc
->shift
;
2755 unsigned int rshift
= mc
->rshift
;
2757 unsigned int mask
= (1 << fls(max
)) - 1;
2758 unsigned int invert
= mc
->invert
;
2760 ucontrol
->value
.integer
.value
[0] =
2761 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2762 if (shift
!= rshift
)
2763 ucontrol
->value
.integer
.value
[1] =
2764 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2766 ucontrol
->value
.integer
.value
[0] =
2767 max
- ucontrol
->value
.integer
.value
[0];
2768 if (shift
!= rshift
)
2769 ucontrol
->value
.integer
.value
[1] =
2770 max
- ucontrol
->value
.integer
.value
[1];
2775 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2778 * snd_soc_put_volsw - single mixer put callback
2779 * @kcontrol: mixer control
2780 * @ucontrol: control element information
2782 * Callback to set the value of a single mixer control.
2784 * Returns 0 for success.
2786 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2787 struct snd_ctl_elem_value
*ucontrol
)
2789 struct soc_mixer_control
*mc
=
2790 (struct soc_mixer_control
*)kcontrol
->private_value
;
2791 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2792 unsigned int reg
= mc
->reg
;
2793 unsigned int shift
= mc
->shift
;
2794 unsigned int rshift
= mc
->rshift
;
2796 unsigned int mask
= (1 << fls(max
)) - 1;
2797 unsigned int invert
= mc
->invert
;
2798 unsigned int val
, val2
, val_mask
;
2800 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2803 val_mask
= mask
<< shift
;
2805 if (shift
!= rshift
) {
2806 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2809 val_mask
|= mask
<< rshift
;
2810 val
|= val2
<< rshift
;
2812 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2814 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2817 * snd_soc_info_volsw_2r - double mixer info callback
2818 * @kcontrol: mixer control
2819 * @uinfo: control element information
2821 * Callback to provide information about a double mixer control that
2822 * spans 2 codec registers.
2824 * Returns 0 for success.
2826 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2827 struct snd_ctl_elem_info
*uinfo
)
2829 struct soc_mixer_control
*mc
=
2830 (struct soc_mixer_control
*)kcontrol
->private_value
;
2833 if (!mc
->platform_max
)
2834 mc
->platform_max
= mc
->max
;
2835 platform_max
= mc
->platform_max
;
2837 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2838 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2840 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2843 uinfo
->value
.integer
.min
= 0;
2844 uinfo
->value
.integer
.max
= platform_max
;
2847 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2850 * snd_soc_get_volsw_2r - double mixer get callback
2851 * @kcontrol: mixer control
2852 * @ucontrol: control element information
2854 * Callback to get the value of a double mixer control that spans 2 registers.
2856 * Returns 0 for success.
2858 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2859 struct snd_ctl_elem_value
*ucontrol
)
2861 struct soc_mixer_control
*mc
=
2862 (struct soc_mixer_control
*)kcontrol
->private_value
;
2863 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2864 unsigned int reg
= mc
->reg
;
2865 unsigned int reg2
= mc
->rreg
;
2866 unsigned int shift
= mc
->shift
;
2868 unsigned int mask
= (1 << fls(max
)) - 1;
2869 unsigned int invert
= mc
->invert
;
2871 ucontrol
->value
.integer
.value
[0] =
2872 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2873 ucontrol
->value
.integer
.value
[1] =
2874 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2876 ucontrol
->value
.integer
.value
[0] =
2877 max
- ucontrol
->value
.integer
.value
[0];
2878 ucontrol
->value
.integer
.value
[1] =
2879 max
- ucontrol
->value
.integer
.value
[1];
2884 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2887 * snd_soc_put_volsw_2r - double mixer set callback
2888 * @kcontrol: mixer control
2889 * @ucontrol: control element information
2891 * Callback to set the value of a double mixer control that spans 2 registers.
2893 * Returns 0 for success.
2895 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2896 struct snd_ctl_elem_value
*ucontrol
)
2898 struct soc_mixer_control
*mc
=
2899 (struct soc_mixer_control
*)kcontrol
->private_value
;
2900 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2901 unsigned int reg
= mc
->reg
;
2902 unsigned int reg2
= mc
->rreg
;
2903 unsigned int shift
= mc
->shift
;
2905 unsigned int mask
= (1 << fls(max
)) - 1;
2906 unsigned int invert
= mc
->invert
;
2908 unsigned int val
, val2
, val_mask
;
2910 val_mask
= mask
<< shift
;
2911 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2912 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2920 val2
= val2
<< shift
;
2922 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2926 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2929 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2932 * snd_soc_info_volsw_s8 - signed mixer info callback
2933 * @kcontrol: mixer control
2934 * @uinfo: control element information
2936 * Callback to provide information about a signed mixer control.
2938 * Returns 0 for success.
2940 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2941 struct snd_ctl_elem_info
*uinfo
)
2943 struct soc_mixer_control
*mc
=
2944 (struct soc_mixer_control
*)kcontrol
->private_value
;
2948 if (!mc
->platform_max
)
2949 mc
->platform_max
= mc
->max
;
2950 platform_max
= mc
->platform_max
;
2952 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2954 uinfo
->value
.integer
.min
= 0;
2955 uinfo
->value
.integer
.max
= platform_max
- min
;
2958 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2961 * snd_soc_get_volsw_s8 - signed mixer get callback
2962 * @kcontrol: mixer control
2963 * @ucontrol: control element information
2965 * Callback to get the value of a signed mixer control.
2967 * Returns 0 for success.
2969 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2970 struct snd_ctl_elem_value
*ucontrol
)
2972 struct soc_mixer_control
*mc
=
2973 (struct soc_mixer_control
*)kcontrol
->private_value
;
2974 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2975 unsigned int reg
= mc
->reg
;
2977 int val
= snd_soc_read(codec
, reg
);
2979 ucontrol
->value
.integer
.value
[0] =
2980 ((signed char)(val
& 0xff))-min
;
2981 ucontrol
->value
.integer
.value
[1] =
2982 ((signed char)((val
>> 8) & 0xff))-min
;
2985 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2988 * snd_soc_put_volsw_sgn - signed mixer put callback
2989 * @kcontrol: mixer control
2990 * @ucontrol: control element information
2992 * Callback to set the value of a signed mixer control.
2994 * Returns 0 for success.
2996 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2997 struct snd_ctl_elem_value
*ucontrol
)
2999 struct soc_mixer_control
*mc
=
3000 (struct soc_mixer_control
*)kcontrol
->private_value
;
3001 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3002 unsigned int reg
= mc
->reg
;
3006 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
3007 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
3009 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
3011 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
3014 * snd_soc_limit_volume - Set new limit to an existing volume control.
3016 * @codec: where to look for the control
3017 * @name: Name of the control
3018 * @max: new maximum limit
3020 * Return 0 for success, else error.
3022 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3023 const char *name
, int max
)
3025 struct snd_card
*card
= codec
->card
->snd_card
;
3026 struct snd_kcontrol
*kctl
;
3027 struct soc_mixer_control
*mc
;
3031 /* Sanity check for name and max */
3032 if (unlikely(!name
|| max
<= 0))
3035 list_for_each_entry(kctl
, &card
->controls
, list
) {
3036 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3042 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3043 if (max
<= mc
->max
) {
3044 mc
->platform_max
= max
;
3050 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3053 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
3054 * mixer info callback
3055 * @kcontrol: mixer control
3056 * @uinfo: control element information
3058 * Returns 0 for success.
3060 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3061 struct snd_ctl_elem_info
*uinfo
)
3063 struct soc_mixer_control
*mc
=
3064 (struct soc_mixer_control
*)kcontrol
->private_value
;
3068 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3070 uinfo
->value
.integer
.min
= 0;
3071 uinfo
->value
.integer
.max
= max
-min
;
3075 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
3078 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
3079 * mixer get callback
3080 * @kcontrol: mixer control
3081 * @uinfo: control element information
3083 * Returns 0 for success.
3085 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3086 struct snd_ctl_elem_value
*ucontrol
)
3088 struct soc_mixer_control
*mc
=
3089 (struct soc_mixer_control
*)kcontrol
->private_value
;
3090 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3091 unsigned int mask
= (1<<mc
->shift
)-1;
3093 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
3094 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3096 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
3097 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
3100 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
3103 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
3104 * mixer put callback
3105 * @kcontrol: mixer control
3106 * @uinfo: control element information
3108 * Returns 0 for success.
3110 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3111 struct snd_ctl_elem_value
*ucontrol
)
3113 struct soc_mixer_control
*mc
=
3114 (struct soc_mixer_control
*)kcontrol
->private_value
;
3115 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3116 unsigned int mask
= (1<<mc
->shift
)-1;
3119 unsigned int val
, valr
, oval
, ovalr
;
3121 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
3123 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
3126 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
3127 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3131 ret
= snd_soc_write(codec
, mc
->reg
, val
);
3135 if (ovalr
!= valr
) {
3136 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
3143 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
3146 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3148 * @clk_id: DAI specific clock ID
3149 * @freq: new clock frequency in Hz
3150 * @dir: new clock direction - input/output.
3152 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3154 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3155 unsigned int freq
, int dir
)
3157 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3158 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3159 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3160 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
,
3165 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3168 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3170 * @clk_id: DAI specific clock ID
3171 * @freq: new clock frequency in Hz
3172 * @dir: new clock direction - input/output.
3174 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3176 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3177 unsigned int freq
, int dir
)
3179 if (codec
->driver
->set_sysclk
)
3180 return codec
->driver
->set_sysclk(codec
, clk_id
, freq
, dir
);
3184 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3187 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3189 * @div_id: DAI specific clock divider ID
3190 * @div: new clock divisor.
3192 * Configures the clock dividers. This is used to derive the best DAI bit and
3193 * frame clocks from the system or master clock. It's best to set the DAI bit
3194 * and frame clocks as low as possible to save system power.
3196 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3197 int div_id
, int div
)
3199 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3200 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3204 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3207 * snd_soc_dai_set_pll - configure DAI PLL.
3209 * @pll_id: DAI specific PLL ID
3210 * @source: DAI specific source for the PLL
3211 * @freq_in: PLL input clock frequency in Hz
3212 * @freq_out: requested PLL output clock frequency in Hz
3214 * Configures and enables PLL to generate output clock based on input clock.
3216 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3217 unsigned int freq_in
, unsigned int freq_out
)
3219 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3220 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3222 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3223 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3228 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3231 * snd_soc_codec_set_pll - configure codec PLL.
3233 * @pll_id: DAI specific PLL ID
3234 * @source: DAI specific source for the PLL
3235 * @freq_in: PLL input clock frequency in Hz
3236 * @freq_out: requested PLL output clock frequency in Hz
3238 * Configures and enables PLL to generate output clock based on input clock.
3240 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3241 unsigned int freq_in
, unsigned int freq_out
)
3243 if (codec
->driver
->set_pll
)
3244 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3249 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3252 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3254 * @fmt: SND_SOC_DAIFMT_ format value.
3256 * Configures the DAI hardware format and clocking.
3258 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3260 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
3261 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3265 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3268 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3270 * @tx_mask: bitmask representing active TX slots.
3271 * @rx_mask: bitmask representing active RX slots.
3272 * @slots: Number of slots in use.
3273 * @slot_width: Width in bits for each slot.
3275 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3278 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3279 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3281 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3282 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3287 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3290 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3292 * @tx_num: how many TX channels
3293 * @tx_slot: pointer to an array which imply the TX slot number channel
3295 * @rx_num: how many RX channels
3296 * @rx_slot: pointer to an array which imply the RX slot number channel
3299 * configure the relationship between channel number and TDM slot number.
3301 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3302 unsigned int tx_num
, unsigned int *tx_slot
,
3303 unsigned int rx_num
, unsigned int *rx_slot
)
3305 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3306 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3311 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3314 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3316 * @tristate: tristate enable
3318 * Tristates the DAI so that others can use it.
3320 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3322 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3323 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3327 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3330 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3332 * @mute: mute enable
3334 * Mutes the DAI DAC.
3336 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3338 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3339 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3343 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3346 * snd_soc_register_card - Register a card with the ASoC core
3348 * @card: Card to register
3351 int snd_soc_register_card(struct snd_soc_card
*card
)
3355 if (!card
->name
|| !card
->dev
)
3358 snd_soc_initialize_card_lists(card
);
3360 soc_init_card_debugfs(card
);
3362 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
3363 (card
->num_links
+ card
->num_aux_devs
),
3365 if (card
->rtd
== NULL
)
3367 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3369 for (i
= 0; i
< card
->num_links
; i
++)
3370 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3372 INIT_LIST_HEAD(&card
->list
);
3373 card
->instantiated
= 0;
3374 mutex_init(&card
->mutex
);
3376 mutex_lock(&client_mutex
);
3377 list_add(&card
->list
, &card_list
);
3378 snd_soc_instantiate_cards();
3379 mutex_unlock(&client_mutex
);
3381 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
3385 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3388 * snd_soc_unregister_card - Unregister a card with the ASoC core
3390 * @card: Card to unregister
3393 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3395 if (card
->instantiated
)
3396 soc_cleanup_card_resources(card
);
3397 mutex_lock(&client_mutex
);
3398 list_del(&card
->list
);
3399 mutex_unlock(&client_mutex
);
3400 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3404 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3407 * Simplify DAI link configuration by removing ".-1" from device names
3408 * and sanitizing names.
3410 static char *fmt_single_name(struct device
*dev
, int *id
)
3412 char *found
, name
[NAME_SIZE
];
3415 if (dev_name(dev
) == NULL
)
3418 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3420 /* are we a "%s.%d" name (platform and SPI components) */
3421 found
= strstr(name
, dev
->driver
->name
);
3424 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3426 /* discard ID from name if ID == -1 */
3428 found
[strlen(dev
->driver
->name
)] = '\0';
3432 /* I2C component devices are named "bus-addr" */
3433 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3434 char tmp
[NAME_SIZE
];
3436 /* create unique ID number from I2C addr and bus */
3437 *id
= ((id1
& 0xffff) << 16) + id2
;
3439 /* sanitize component name for DAI link creation */
3440 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3441 strlcpy(name
, tmp
, NAME_SIZE
);
3446 return kstrdup(name
, GFP_KERNEL
);
3450 * Simplify DAI link naming for single devices with multiple DAIs by removing
3451 * any ".-1" and using the DAI name (instead of device name).
3453 static inline char *fmt_multiple_name(struct device
*dev
,
3454 struct snd_soc_dai_driver
*dai_drv
)
3456 if (dai_drv
->name
== NULL
) {
3457 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
3462 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3466 * snd_soc_register_dai - Register a DAI with the ASoC core
3468 * @dai: DAI to register
3470 int snd_soc_register_dai(struct device
*dev
,
3471 struct snd_soc_dai_driver
*dai_drv
)
3473 struct snd_soc_dai
*dai
;
3475 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3477 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3481 /* create DAI component name */
3482 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3483 if (dai
->name
== NULL
) {
3489 dai
->driver
= dai_drv
;
3490 if (!dai
->driver
->ops
)
3491 dai
->driver
->ops
= &null_dai_ops
;
3493 mutex_lock(&client_mutex
);
3494 list_add(&dai
->list
, &dai_list
);
3495 snd_soc_instantiate_cards();
3496 mutex_unlock(&client_mutex
);
3498 pr_debug("Registered DAI '%s'\n", dai
->name
);
3502 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3505 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3507 * @dai: DAI to unregister
3509 void snd_soc_unregister_dai(struct device
*dev
)
3511 struct snd_soc_dai
*dai
;
3513 list_for_each_entry(dai
, &dai_list
, list
) {
3514 if (dev
== dai
->dev
)
3520 mutex_lock(&client_mutex
);
3521 list_del(&dai
->list
);
3522 mutex_unlock(&client_mutex
);
3524 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3528 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3531 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3533 * @dai: Array of DAIs to register
3534 * @count: Number of DAIs
3536 int snd_soc_register_dais(struct device
*dev
,
3537 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3539 struct snd_soc_dai
*dai
;
3542 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3544 for (i
= 0; i
< count
; i
++) {
3546 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3552 /* create DAI component name */
3553 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3554 if (dai
->name
== NULL
) {
3561 dai
->driver
= &dai_drv
[i
];
3562 if (dai
->driver
->id
)
3563 dai
->id
= dai
->driver
->id
;
3566 if (!dai
->driver
->ops
)
3567 dai
->driver
->ops
= &null_dai_ops
;
3569 mutex_lock(&client_mutex
);
3570 list_add(&dai
->list
, &dai_list
);
3571 mutex_unlock(&client_mutex
);
3573 pr_debug("Registered DAI '%s'\n", dai
->name
);
3576 mutex_lock(&client_mutex
);
3577 snd_soc_instantiate_cards();
3578 mutex_unlock(&client_mutex
);
3582 for (i
--; i
>= 0; i
--)
3583 snd_soc_unregister_dai(dev
);
3587 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3590 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3592 * @dai: Array of DAIs to unregister
3593 * @count: Number of DAIs
3595 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3599 for (i
= 0; i
< count
; i
++)
3600 snd_soc_unregister_dai(dev
);
3602 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3605 * snd_soc_register_platform - Register a platform with the ASoC core
3607 * @platform: platform to register
3609 int snd_soc_register_platform(struct device
*dev
,
3610 struct snd_soc_platform_driver
*platform_drv
)
3612 struct snd_soc_platform
*platform
;
3614 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3616 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3617 if (platform
== NULL
)
3620 /* create platform component name */
3621 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3622 if (platform
->name
== NULL
) {
3627 platform
->dev
= dev
;
3628 platform
->driver
= platform_drv
;
3630 mutex_lock(&client_mutex
);
3631 list_add(&platform
->list
, &platform_list
);
3632 snd_soc_instantiate_cards();
3633 mutex_unlock(&client_mutex
);
3635 pr_debug("Registered platform '%s'\n", platform
->name
);
3639 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3642 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3644 * @platform: platform to unregister
3646 void snd_soc_unregister_platform(struct device
*dev
)
3648 struct snd_soc_platform
*platform
;
3650 list_for_each_entry(platform
, &platform_list
, list
) {
3651 if (dev
== platform
->dev
)
3657 mutex_lock(&client_mutex
);
3658 list_del(&platform
->list
);
3659 mutex_unlock(&client_mutex
);
3661 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3662 kfree(platform
->name
);
3665 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3667 static u64 codec_format_map
[] = {
3668 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3669 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3670 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3671 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3672 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3673 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3674 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3675 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3676 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3677 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3678 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3679 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3680 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3681 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3682 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3683 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3686 /* Fix up the DAI formats for endianness: codecs don't actually see
3687 * the endianness of the data but we're using the CPU format
3688 * definitions which do need to include endianness so we ensure that
3689 * codec DAIs always have both big and little endian variants set.
3691 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3695 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3696 if (stream
->formats
& codec_format_map
[i
])
3697 stream
->formats
|= codec_format_map
[i
];
3701 * snd_soc_register_codec - Register a codec with the ASoC core
3703 * @codec: codec to register
3705 int snd_soc_register_codec(struct device
*dev
,
3706 const struct snd_soc_codec_driver
*codec_drv
,
3707 struct snd_soc_dai_driver
*dai_drv
,
3711 struct snd_soc_codec
*codec
;
3714 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3716 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3720 /* create CODEC component name */
3721 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3722 if (codec
->name
== NULL
) {
3727 if (codec_drv
->compress_type
)
3728 codec
->compress_type
= codec_drv
->compress_type
;
3730 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3732 codec
->write
= codec_drv
->write
;
3733 codec
->read
= codec_drv
->read
;
3734 codec
->volatile_register
= codec_drv
->volatile_register
;
3735 codec
->readable_register
= codec_drv
->readable_register
;
3736 codec
->writable_register
= codec_drv
->writable_register
;
3737 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3738 codec
->dapm
.dev
= dev
;
3739 codec
->dapm
.codec
= codec
;
3740 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3742 codec
->driver
= codec_drv
;
3743 codec
->num_dai
= num_dai
;
3744 mutex_init(&codec
->mutex
);
3746 /* allocate CODEC register cache */
3747 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3748 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3749 codec
->reg_size
= reg_size
;
3750 /* it is necessary to make a copy of the default register cache
3751 * because in the case of using a compression type that requires
3752 * the default register cache to be marked as __devinitconst the
3753 * kernel might have freed the array by the time we initialize
3756 if (codec_drv
->reg_cache_default
) {
3757 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3758 reg_size
, GFP_KERNEL
);
3759 if (!codec
->reg_def_copy
) {
3766 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3767 if (!codec
->volatile_register
)
3768 codec
->volatile_register
= snd_soc_default_volatile_register
;
3769 if (!codec
->readable_register
)
3770 codec
->readable_register
= snd_soc_default_readable_register
;
3771 if (!codec
->writable_register
)
3772 codec
->writable_register
= snd_soc_default_writable_register
;
3775 for (i
= 0; i
< num_dai
; i
++) {
3776 fixup_codec_formats(&dai_drv
[i
].playback
);
3777 fixup_codec_formats(&dai_drv
[i
].capture
);
3780 /* register any DAIs */
3782 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3787 mutex_lock(&client_mutex
);
3788 list_add(&codec
->list
, &codec_list
);
3789 snd_soc_instantiate_cards();
3790 mutex_unlock(&client_mutex
);
3792 pr_debug("Registered codec '%s'\n", codec
->name
);
3796 kfree(codec
->reg_def_copy
);
3797 codec
->reg_def_copy
= NULL
;
3802 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3805 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3807 * @codec: codec to unregister
3809 void snd_soc_unregister_codec(struct device
*dev
)
3811 struct snd_soc_codec
*codec
;
3814 list_for_each_entry(codec
, &codec_list
, list
) {
3815 if (dev
== codec
->dev
)
3822 for (i
= 0; i
< codec
->num_dai
; i
++)
3823 snd_soc_unregister_dai(dev
);
3825 mutex_lock(&client_mutex
);
3826 list_del(&codec
->list
);
3827 mutex_unlock(&client_mutex
);
3829 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3831 snd_soc_cache_exit(codec
);
3832 kfree(codec
->reg_def_copy
);
3836 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3838 static int __init
snd_soc_init(void)
3840 #ifdef CONFIG_DEBUG_FS
3841 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3842 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3844 "ASoC: Failed to create debugfs directory\n");
3845 snd_soc_debugfs_root
= NULL
;
3848 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3850 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3852 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3854 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3856 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3857 &platform_list_fops
))
3858 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3861 snd_soc_util_init();
3863 return platform_driver_register(&soc_driver
);
3865 module_init(snd_soc_init
);
3867 static void __exit
snd_soc_exit(void)
3869 snd_soc_util_exit();
3871 #ifdef CONFIG_DEBUG_FS
3872 debugfs_remove_recursive(snd_soc_debugfs_root
);
3874 platform_driver_unregister(&soc_driver
);
3876 module_exit(snd_soc_exit
);
3878 /* Module information */
3879 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3880 MODULE_DESCRIPTION("ALSA SoC Core");
3881 MODULE_LICENSE("GPL");
3882 MODULE_ALIAS("platform:soc-audio");