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 soc_init_codec_debugfs(codec
);
1498 if (driver
->dapm_widgets
)
1499 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1500 driver
->num_dapm_widgets
);
1502 if (driver
->probe
) {
1503 ret
= driver
->probe(codec
);
1506 "asoc: failed to probe CODEC %s: %d\n",
1512 if (driver
->controls
)
1513 snd_soc_add_controls(codec
, driver
->controls
,
1514 driver
->num_controls
);
1515 if (driver
->dapm_routes
)
1516 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1517 driver
->num_dapm_routes
);
1519 /* mark codec as probed and add to card codec list */
1521 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1522 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1527 soc_cleanup_codec_debugfs(codec
);
1528 module_put(codec
->dev
->driver
->owner
);
1533 static void rtd_release(struct device
*dev
) {}
1535 static int soc_post_component_init(struct snd_soc_card
*card
,
1536 struct snd_soc_codec
*codec
,
1537 int num
, int dailess
)
1539 struct snd_soc_dai_link
*dai_link
= NULL
;
1540 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1541 struct snd_soc_pcm_runtime
*rtd
;
1542 const char *temp
, *name
;
1546 dai_link
= &card
->dai_link
[num
];
1547 rtd
= &card
->rtd
[num
];
1548 name
= dai_link
->name
;
1550 aux_dev
= &card
->aux_dev
[num
];
1551 rtd
= &card
->rtd_aux
[num
];
1552 name
= aux_dev
->name
;
1556 /* machine controls, routes and widgets are not prefixed */
1557 temp
= codec
->name_prefix
;
1558 codec
->name_prefix
= NULL
;
1560 /* do machine specific initialization */
1561 if (!dailess
&& dai_link
->init
)
1562 ret
= dai_link
->init(rtd
);
1563 else if (dailess
&& aux_dev
->init
)
1564 ret
= aux_dev
->init(&codec
->dapm
);
1566 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1569 codec
->name_prefix
= temp
;
1571 /* Make sure all DAPM widgets are instantiated */
1572 snd_soc_dapm_new_widgets(&codec
->dapm
);
1574 /* register the rtd device */
1576 rtd
->dev
.parent
= card
->dev
;
1577 rtd
->dev
.release
= rtd_release
;
1578 rtd
->dev
.init_name
= name
;
1579 ret
= device_register(&rtd
->dev
);
1582 "asoc: failed to register runtime device: %d\n", ret
);
1585 rtd
->dev_registered
= 1;
1587 /* add DAPM sysfs entries for this codec */
1588 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1591 "asoc: failed to add codec dapm sysfs entries: %d\n",
1594 /* add codec sysfs entries */
1595 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1598 "asoc: failed to add codec sysfs files: %d\n", ret
);
1603 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1605 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1606 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1607 struct snd_soc_codec
*codec
= rtd
->codec
;
1608 struct snd_soc_platform
*platform
= rtd
->platform
;
1609 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1612 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1614 /* config components */
1615 codec_dai
->codec
= codec
;
1616 cpu_dai
->platform
= platform
;
1617 codec_dai
->card
= card
;
1618 cpu_dai
->card
= card
;
1620 /* set default power off timeout */
1621 rtd
->pmdown_time
= pmdown_time
;
1623 /* probe the cpu_dai */
1624 if (!cpu_dai
->probed
) {
1625 if (cpu_dai
->driver
->probe
) {
1626 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1628 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1633 cpu_dai
->probed
= 1;
1634 /* mark cpu_dai as probed and add to card cpu_dai list */
1635 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1638 /* probe the CODEC */
1639 if (!codec
->probed
) {
1640 ret
= soc_probe_codec(card
, codec
);
1645 /* probe the platform */
1646 if (!platform
->probed
) {
1647 if (!try_module_get(platform
->dev
->driver
->owner
))
1650 if (platform
->driver
->probe
) {
1651 ret
= platform
->driver
->probe(platform
);
1653 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1655 module_put(platform
->dev
->driver
->owner
);
1659 /* mark platform as probed and add to card platform list */
1660 platform
->probed
= 1;
1661 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1664 /* probe the CODEC DAI */
1665 if (!codec_dai
->probed
) {
1666 if (codec_dai
->driver
->probe
) {
1667 ret
= codec_dai
->driver
->probe(codec_dai
);
1669 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1675 /* mark cpu_dai as probed and add to card cpu_dai list */
1676 codec_dai
->probed
= 1;
1677 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1680 /* DAPM dai link stream work */
1681 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1683 ret
= soc_post_component_init(card
, codec
, num
, 0);
1687 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1689 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1691 /* create the pcm */
1692 ret
= soc_new_pcm(rtd
, num
);
1694 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1698 /* add platform data for AC97 devices */
1699 if (rtd
->codec_dai
->driver
->ac97_control
)
1700 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1705 #ifdef CONFIG_SND_SOC_AC97_BUS
1706 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1710 /* Only instantiate AC97 if not already done by the adaptor
1711 * for the generic AC97 subsystem.
1713 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1715 * It is possible that the AC97 device is already registered to
1716 * the device subsystem. This happens when the device is created
1717 * via snd_ac97_mixer(). Currently only SoC codec that does so
1718 * is the generic AC97 glue but others migh emerge.
1720 * In those cases we don't try to register the device again.
1722 if (!rtd
->codec
->ac97_created
)
1725 ret
= soc_ac97_dev_register(rtd
->codec
);
1727 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1731 rtd
->codec
->ac97_registered
= 1;
1736 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1738 if (codec
->ac97_registered
) {
1739 soc_ac97_dev_unregister(codec
);
1740 codec
->ac97_registered
= 0;
1745 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1747 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1748 struct snd_soc_codec
*codec
;
1751 /* find CODEC from registered CODECs*/
1752 list_for_each_entry(codec
, &codec_list
, list
) {
1753 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1754 if (codec
->probed
) {
1756 "asoc: codec already probed");
1763 /* codec not found */
1764 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1768 ret
= soc_probe_codec(card
, codec
);
1772 ret
= soc_post_component_init(card
, codec
, num
, 1);
1778 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1780 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1781 struct snd_soc_codec
*codec
= rtd
->codec
;
1783 /* unregister the rtd device */
1784 if (rtd
->dev_registered
) {
1785 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1786 device_unregister(&rtd
->dev
);
1787 rtd
->dev_registered
= 0;
1790 if (codec
&& codec
->probed
)
1791 soc_remove_codec(codec
);
1794 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1795 enum snd_soc_compress_type compress_type
)
1799 if (codec
->cache_init
)
1802 /* override the compress_type if necessary */
1803 if (compress_type
&& codec
->compress_type
!= compress_type
)
1804 codec
->compress_type
= compress_type
;
1805 ret
= snd_soc_cache_init(codec
);
1807 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1811 codec
->cache_init
= 1;
1815 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1817 struct snd_soc_codec
*codec
;
1818 struct snd_soc_codec_conf
*codec_conf
;
1819 enum snd_soc_compress_type compress_type
;
1822 mutex_lock(&card
->mutex
);
1824 if (card
->instantiated
) {
1825 mutex_unlock(&card
->mutex
);
1830 for (i
= 0; i
< card
->num_links
; i
++)
1831 soc_bind_dai_link(card
, i
);
1833 /* bind completed ? */
1834 if (card
->num_rtd
!= card
->num_links
) {
1835 mutex_unlock(&card
->mutex
);
1839 /* initialize the register cache for each available codec */
1840 list_for_each_entry(codec
, &codec_list
, list
) {
1841 if (codec
->cache_init
)
1843 /* by default we don't override the compress_type */
1845 /* check to see if we need to override the compress_type */
1846 for (i
= 0; i
< card
->num_configs
; ++i
) {
1847 codec_conf
= &card
->codec_conf
[i
];
1848 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1849 compress_type
= codec_conf
->compress_type
;
1850 if (compress_type
&& compress_type
1851 != codec
->compress_type
)
1855 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1857 mutex_unlock(&card
->mutex
);
1862 /* card bind complete so register a sound card */
1863 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1864 card
->owner
, 0, &card
->snd_card
);
1866 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1868 mutex_unlock(&card
->mutex
);
1871 card
->snd_card
->dev
= card
->dev
;
1873 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1874 card
->dapm
.dev
= card
->dev
;
1875 card
->dapm
.card
= card
;
1876 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1878 #ifdef CONFIG_DEBUG_FS
1879 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1882 #ifdef CONFIG_PM_SLEEP
1883 /* deferred resume work */
1884 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1887 if (card
->dapm_widgets
)
1888 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1889 card
->num_dapm_widgets
);
1891 /* initialise the sound card only once */
1893 ret
= card
->probe(card
);
1895 goto card_probe_error
;
1898 for (i
= 0; i
< card
->num_links
; i
++) {
1899 ret
= soc_probe_dai_link(card
, i
);
1901 pr_err("asoc: failed to instantiate card %s: %d\n",
1907 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1908 ret
= soc_probe_aux_dev(card
, i
);
1910 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1912 goto probe_aux_dev_err
;
1916 /* We should have a non-codec control add function but we don't */
1918 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1919 struct snd_soc_codec
,
1922 card
->num_controls
);
1924 if (card
->dapm_routes
)
1925 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1926 card
->num_dapm_routes
);
1928 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1930 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1931 "%s", card
->long_name
? card
->long_name
: card
->name
);
1932 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1933 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1935 if (card
->late_probe
) {
1936 ret
= card
->late_probe(card
);
1938 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1940 goto probe_aux_dev_err
;
1944 ret
= snd_card_register(card
->snd_card
);
1946 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1947 goto probe_aux_dev_err
;
1950 #ifdef CONFIG_SND_SOC_AC97_BUS
1951 /* register any AC97 codecs */
1952 for (i
= 0; i
< card
->num_rtd
; i
++) {
1953 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1955 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1957 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1958 goto probe_aux_dev_err
;
1963 card
->instantiated
= 1;
1964 mutex_unlock(&card
->mutex
);
1968 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1969 soc_remove_aux_dev(card
, i
);
1972 soc_remove_dai_links(card
);
1978 snd_card_free(card
->snd_card
);
1980 mutex_unlock(&card
->mutex
);
1984 * Attempt to initialise any uninitialised cards. Must be called with
1987 static void snd_soc_instantiate_cards(void)
1989 struct snd_soc_card
*card
;
1990 list_for_each_entry(card
, &card_list
, list
)
1991 snd_soc_instantiate_card(card
);
1994 /* probes a new socdev */
1995 static int soc_probe(struct platform_device
*pdev
)
1997 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2001 * no card, so machine driver should be registering card
2002 * we should not be here in that case so ret error
2007 /* Bodge while we unpick instantiation */
2008 card
->dev
= &pdev
->dev
;
2010 ret
= snd_soc_register_card(card
);
2012 dev_err(&pdev
->dev
, "Failed to register card\n");
2019 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2023 /* make sure any delayed work runs */
2024 for (i
= 0; i
< card
->num_rtd
; i
++) {
2025 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2026 flush_delayed_work_sync(&rtd
->delayed_work
);
2029 /* remove auxiliary devices */
2030 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2031 soc_remove_aux_dev(card
, i
);
2033 /* remove and free each DAI */
2034 soc_remove_dai_links(card
);
2036 soc_cleanup_card_debugfs(card
);
2038 /* remove the card */
2042 snd_soc_dapm_free(&card
->dapm
);
2045 snd_card_free(card
->snd_card
);
2050 /* removes a socdev */
2051 static int soc_remove(struct platform_device
*pdev
)
2053 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2055 snd_soc_unregister_card(card
);
2059 int snd_soc_poweroff(struct device
*dev
)
2061 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2064 if (!card
->instantiated
)
2067 /* Flush out pmdown_time work - we actually do want to run it
2068 * now, we're shutting down so no imminent restart. */
2069 for (i
= 0; i
< card
->num_rtd
; i
++) {
2070 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2071 flush_delayed_work_sync(&rtd
->delayed_work
);
2074 snd_soc_dapm_shutdown(card
);
2078 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2080 const struct dev_pm_ops snd_soc_pm_ops
= {
2081 .suspend
= snd_soc_suspend
,
2082 .resume
= snd_soc_resume
,
2083 .poweroff
= snd_soc_poweroff
,
2085 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2087 /* ASoC platform driver */
2088 static struct platform_driver soc_driver
= {
2090 .name
= "soc-audio",
2091 .owner
= THIS_MODULE
,
2092 .pm
= &snd_soc_pm_ops
,
2095 .remove
= soc_remove
,
2098 /* create a new pcm */
2099 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2101 struct snd_soc_codec
*codec
= rtd
->codec
;
2102 struct snd_soc_platform
*platform
= rtd
->platform
;
2103 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
2104 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2105 struct snd_pcm
*pcm
;
2107 int ret
= 0, playback
= 0, capture
= 0;
2109 /* check client and interface hw capabilities */
2110 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2111 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
2113 if (codec_dai
->driver
->playback
.channels_min
)
2115 if (codec_dai
->driver
->capture
.channels_min
)
2118 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
2119 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
2120 num
, playback
, capture
, &pcm
);
2122 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
2127 pcm
->private_data
= rtd
;
2128 if (platform
->driver
->ops
) {
2129 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
2130 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
2131 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
2132 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
2133 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
2134 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
2135 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
2139 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
2142 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
2144 if (platform
->driver
->pcm_new
) {
2145 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
,
2148 pr_err("asoc: platform pcm constructor failed\n");
2153 pcm
->private_free
= platform
->driver
->pcm_free
;
2154 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
2160 * snd_soc_codec_volatile_register: Report if a register is volatile.
2162 * @codec: CODEC to query.
2163 * @reg: Register to query.
2165 * Boolean function indiciating if a CODEC register is volatile.
2167 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
2170 if (codec
->volatile_register
)
2171 return codec
->volatile_register(codec
, reg
);
2175 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
2178 * snd_soc_codec_readable_register: Report if a register is readable.
2180 * @codec: CODEC to query.
2181 * @reg: Register to query.
2183 * Boolean function indicating if a CODEC register is readable.
2185 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
2188 if (codec
->readable_register
)
2189 return codec
->readable_register(codec
, reg
);
2193 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
2196 * snd_soc_codec_writable_register: Report if a register is writable.
2198 * @codec: CODEC to query.
2199 * @reg: Register to query.
2201 * Boolean function indicating if a CODEC register is writable.
2203 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2206 if (codec
->writable_register
)
2207 return codec
->writable_register(codec
, reg
);
2211 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2214 * snd_soc_new_ac97_codec - initailise AC97 device
2215 * @codec: audio codec
2216 * @ops: AC97 bus operations
2217 * @num: AC97 codec number
2219 * Initialises AC97 codec resources for use by ad-hoc devices only.
2221 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2222 struct snd_ac97_bus_ops
*ops
, int num
)
2224 mutex_lock(&codec
->mutex
);
2226 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2227 if (codec
->ac97
== NULL
) {
2228 mutex_unlock(&codec
->mutex
);
2232 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2233 if (codec
->ac97
->bus
== NULL
) {
2236 mutex_unlock(&codec
->mutex
);
2240 codec
->ac97
->bus
->ops
= ops
;
2241 codec
->ac97
->num
= num
;
2244 * Mark the AC97 device to be created by us. This way we ensure that the
2245 * device will be registered with the device subsystem later on.
2247 codec
->ac97_created
= 1;
2249 mutex_unlock(&codec
->mutex
);
2252 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2255 * snd_soc_free_ac97_codec - free AC97 codec device
2256 * @codec: audio codec
2258 * Frees AC97 codec device resources.
2260 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2262 mutex_lock(&codec
->mutex
);
2263 #ifdef CONFIG_SND_SOC_AC97_BUS
2264 soc_unregister_ac97_dai_link(codec
);
2266 kfree(codec
->ac97
->bus
);
2269 codec
->ac97_created
= 0;
2270 mutex_unlock(&codec
->mutex
);
2272 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2274 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2278 ret
= codec
->read(codec
, reg
);
2279 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2280 trace_snd_soc_reg_read(codec
, reg
, ret
);
2284 EXPORT_SYMBOL_GPL(snd_soc_read
);
2286 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2287 unsigned int reg
, unsigned int val
)
2289 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2290 trace_snd_soc_reg_write(codec
, reg
, val
);
2291 return codec
->write(codec
, reg
, val
);
2293 EXPORT_SYMBOL_GPL(snd_soc_write
);
2295 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2296 unsigned int reg
, const void *data
, size_t len
)
2298 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2300 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2303 * snd_soc_update_bits - update codec register bits
2304 * @codec: audio codec
2305 * @reg: codec register
2306 * @mask: register mask
2309 * Writes new register value.
2311 * Returns 1 for change, 0 for no change, or negative error code.
2313 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2314 unsigned int mask
, unsigned int value
)
2317 unsigned int old
, new;
2320 ret
= snd_soc_read(codec
, reg
);
2325 new = (old
& ~mask
) | value
;
2326 change
= old
!= new;
2328 ret
= snd_soc_write(codec
, reg
, new);
2335 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2338 * snd_soc_update_bits_locked - update codec register bits
2339 * @codec: audio codec
2340 * @reg: codec register
2341 * @mask: register mask
2344 * Writes new register value, and takes the codec mutex.
2346 * Returns 1 for change else 0.
2348 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2349 unsigned short reg
, unsigned int mask
,
2354 mutex_lock(&codec
->mutex
);
2355 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2356 mutex_unlock(&codec
->mutex
);
2360 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2363 * snd_soc_test_bits - test register for change
2364 * @codec: audio codec
2365 * @reg: codec register
2366 * @mask: register mask
2369 * Tests a register with a new value and checks if the new value is
2370 * different from the old value.
2372 * Returns 1 for change else 0.
2374 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2375 unsigned int mask
, unsigned int value
)
2378 unsigned int old
, new;
2380 old
= snd_soc_read(codec
, reg
);
2381 new = (old
& ~mask
) | value
;
2382 change
= old
!= new;
2386 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2389 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2390 * @substream: the pcm substream
2391 * @hw: the hardware parameters
2393 * Sets the substream runtime hardware parameters.
2395 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2396 const struct snd_pcm_hardware
*hw
)
2398 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2399 runtime
->hw
.info
= hw
->info
;
2400 runtime
->hw
.formats
= hw
->formats
;
2401 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2402 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2403 runtime
->hw
.periods_min
= hw
->periods_min
;
2404 runtime
->hw
.periods_max
= hw
->periods_max
;
2405 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2406 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2409 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2412 * snd_soc_cnew - create new control
2413 * @_template: control template
2414 * @data: control private data
2415 * @long_name: control long name
2416 * @prefix: control name prefix
2418 * Create a new mixer control from a template control.
2420 * Returns 0 for success, else error.
2422 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2423 void *data
, char *long_name
,
2426 struct snd_kcontrol_new
template;
2427 struct snd_kcontrol
*kcontrol
;
2431 memcpy(&template, _template
, sizeof(template));
2435 long_name
= template.name
;
2438 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2439 name
= kmalloc(name_len
, GFP_ATOMIC
);
2443 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2445 template.name
= name
;
2447 template.name
= long_name
;
2450 kcontrol
= snd_ctl_new1(&template, data
);
2456 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2459 * snd_soc_add_controls - add an array of controls to a codec.
2460 * Convienience function to add a list of controls. Many codecs were
2461 * duplicating this code.
2463 * @codec: codec to add controls to
2464 * @controls: array of controls to add
2465 * @num_controls: number of elements in the array
2467 * Return 0 for success, else error.
2469 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2470 const struct snd_kcontrol_new
*controls
, int num_controls
)
2472 struct snd_card
*card
= codec
->card
->snd_card
;
2475 for (i
= 0; i
< num_controls
; i
++) {
2476 const struct snd_kcontrol_new
*control
= &controls
[i
];
2477 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
2479 codec
->name_prefix
));
2481 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2482 codec
->name
, control
->name
, err
);
2489 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2492 * snd_soc_info_enum_double - enumerated double mixer info callback
2493 * @kcontrol: mixer control
2494 * @uinfo: control element information
2496 * Callback to provide information about a double enumerated
2499 * Returns 0 for success.
2501 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2502 struct snd_ctl_elem_info
*uinfo
)
2504 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2506 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2507 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2508 uinfo
->value
.enumerated
.items
= e
->max
;
2510 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2511 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2512 strcpy(uinfo
->value
.enumerated
.name
,
2513 e
->texts
[uinfo
->value
.enumerated
.item
]);
2516 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2519 * snd_soc_get_enum_double - enumerated double mixer get callback
2520 * @kcontrol: mixer control
2521 * @ucontrol: control element information
2523 * Callback to get the value of a double enumerated mixer.
2525 * Returns 0 for success.
2527 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2528 struct snd_ctl_elem_value
*ucontrol
)
2530 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2531 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2532 unsigned int val
, bitmask
;
2534 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2536 val
= snd_soc_read(codec
, e
->reg
);
2537 ucontrol
->value
.enumerated
.item
[0]
2538 = (val
>> e
->shift_l
) & (bitmask
- 1);
2539 if (e
->shift_l
!= e
->shift_r
)
2540 ucontrol
->value
.enumerated
.item
[1] =
2541 (val
>> e
->shift_r
) & (bitmask
- 1);
2545 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2548 * snd_soc_put_enum_double - enumerated double mixer put callback
2549 * @kcontrol: mixer control
2550 * @ucontrol: control element information
2552 * Callback to set the value of a double enumerated mixer.
2554 * Returns 0 for success.
2556 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2557 struct snd_ctl_elem_value
*ucontrol
)
2559 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2560 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2562 unsigned int mask
, bitmask
;
2564 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2566 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2568 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2569 mask
= (bitmask
- 1) << e
->shift_l
;
2570 if (e
->shift_l
!= e
->shift_r
) {
2571 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2573 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2574 mask
|= (bitmask
- 1) << e
->shift_r
;
2577 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2579 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2582 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2583 * @kcontrol: mixer control
2584 * @ucontrol: control element information
2586 * Callback to get the value of a double semi enumerated mixer.
2588 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2589 * used for handling bitfield coded enumeration for example.
2591 * Returns 0 for success.
2593 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2594 struct snd_ctl_elem_value
*ucontrol
)
2596 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2597 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2598 unsigned int reg_val
, val
, mux
;
2600 reg_val
= snd_soc_read(codec
, e
->reg
);
2601 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2602 for (mux
= 0; mux
< e
->max
; mux
++) {
2603 if (val
== e
->values
[mux
])
2606 ucontrol
->value
.enumerated
.item
[0] = mux
;
2607 if (e
->shift_l
!= e
->shift_r
) {
2608 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2609 for (mux
= 0; mux
< e
->max
; mux
++) {
2610 if (val
== e
->values
[mux
])
2613 ucontrol
->value
.enumerated
.item
[1] = mux
;
2618 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2621 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2622 * @kcontrol: mixer control
2623 * @ucontrol: control element information
2625 * Callback to set the value of a double semi enumerated mixer.
2627 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2628 * used for handling bitfield coded enumeration for example.
2630 * Returns 0 for success.
2632 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2633 struct snd_ctl_elem_value
*ucontrol
)
2635 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2636 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2640 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2642 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2643 mask
= e
->mask
<< e
->shift_l
;
2644 if (e
->shift_l
!= e
->shift_r
) {
2645 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2647 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2648 mask
|= e
->mask
<< e
->shift_r
;
2651 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2653 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2656 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2657 * @kcontrol: mixer control
2658 * @uinfo: control element information
2660 * Callback to provide information about an external enumerated
2663 * Returns 0 for success.
2665 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2666 struct snd_ctl_elem_info
*uinfo
)
2668 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2670 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2672 uinfo
->value
.enumerated
.items
= e
->max
;
2674 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2675 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2676 strcpy(uinfo
->value
.enumerated
.name
,
2677 e
->texts
[uinfo
->value
.enumerated
.item
]);
2680 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2683 * snd_soc_info_volsw_ext - external single mixer info callback
2684 * @kcontrol: mixer control
2685 * @uinfo: control element information
2687 * Callback to provide information about a single external mixer control.
2689 * Returns 0 for success.
2691 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2692 struct snd_ctl_elem_info
*uinfo
)
2694 int max
= kcontrol
->private_value
;
2696 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2697 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2699 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2702 uinfo
->value
.integer
.min
= 0;
2703 uinfo
->value
.integer
.max
= max
;
2706 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2709 * snd_soc_info_volsw - single mixer info callback
2710 * @kcontrol: mixer control
2711 * @uinfo: control element information
2713 * Callback to provide information about a single mixer control.
2715 * Returns 0 for success.
2717 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2718 struct snd_ctl_elem_info
*uinfo
)
2720 struct soc_mixer_control
*mc
=
2721 (struct soc_mixer_control
*)kcontrol
->private_value
;
2723 unsigned int shift
= mc
->shift
;
2724 unsigned int rshift
= mc
->rshift
;
2726 if (!mc
->platform_max
)
2727 mc
->platform_max
= mc
->max
;
2728 platform_max
= mc
->platform_max
;
2730 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2731 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2733 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2735 uinfo
->count
= shift
== rshift
? 1 : 2;
2736 uinfo
->value
.integer
.min
= 0;
2737 uinfo
->value
.integer
.max
= platform_max
;
2740 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2743 * snd_soc_get_volsw - single mixer get callback
2744 * @kcontrol: mixer control
2745 * @ucontrol: control element information
2747 * Callback to get the value of a single mixer control.
2749 * Returns 0 for success.
2751 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2752 struct snd_ctl_elem_value
*ucontrol
)
2754 struct soc_mixer_control
*mc
=
2755 (struct soc_mixer_control
*)kcontrol
->private_value
;
2756 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2757 unsigned int reg
= mc
->reg
;
2758 unsigned int shift
= mc
->shift
;
2759 unsigned int rshift
= mc
->rshift
;
2761 unsigned int mask
= (1 << fls(max
)) - 1;
2762 unsigned int invert
= mc
->invert
;
2764 ucontrol
->value
.integer
.value
[0] =
2765 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2766 if (shift
!= rshift
)
2767 ucontrol
->value
.integer
.value
[1] =
2768 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2770 ucontrol
->value
.integer
.value
[0] =
2771 max
- ucontrol
->value
.integer
.value
[0];
2772 if (shift
!= rshift
)
2773 ucontrol
->value
.integer
.value
[1] =
2774 max
- ucontrol
->value
.integer
.value
[1];
2779 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2782 * snd_soc_put_volsw - single mixer put callback
2783 * @kcontrol: mixer control
2784 * @ucontrol: control element information
2786 * Callback to set the value of a single mixer control.
2788 * Returns 0 for success.
2790 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2791 struct snd_ctl_elem_value
*ucontrol
)
2793 struct soc_mixer_control
*mc
=
2794 (struct soc_mixer_control
*)kcontrol
->private_value
;
2795 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2796 unsigned int reg
= mc
->reg
;
2797 unsigned int shift
= mc
->shift
;
2798 unsigned int rshift
= mc
->rshift
;
2800 unsigned int mask
= (1 << fls(max
)) - 1;
2801 unsigned int invert
= mc
->invert
;
2802 unsigned int val
, val2
, val_mask
;
2804 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2807 val_mask
= mask
<< shift
;
2809 if (shift
!= rshift
) {
2810 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2813 val_mask
|= mask
<< rshift
;
2814 val
|= val2
<< rshift
;
2816 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2818 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2821 * snd_soc_info_volsw_2r - double mixer info callback
2822 * @kcontrol: mixer control
2823 * @uinfo: control element information
2825 * Callback to provide information about a double mixer control that
2826 * spans 2 codec registers.
2828 * Returns 0 for success.
2830 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2831 struct snd_ctl_elem_info
*uinfo
)
2833 struct soc_mixer_control
*mc
=
2834 (struct soc_mixer_control
*)kcontrol
->private_value
;
2837 if (!mc
->platform_max
)
2838 mc
->platform_max
= mc
->max
;
2839 platform_max
= mc
->platform_max
;
2841 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2842 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2844 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2847 uinfo
->value
.integer
.min
= 0;
2848 uinfo
->value
.integer
.max
= platform_max
;
2851 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2854 * snd_soc_get_volsw_2r - double mixer get callback
2855 * @kcontrol: mixer control
2856 * @ucontrol: control element information
2858 * Callback to get the value of a double mixer control that spans 2 registers.
2860 * Returns 0 for success.
2862 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2863 struct snd_ctl_elem_value
*ucontrol
)
2865 struct soc_mixer_control
*mc
=
2866 (struct soc_mixer_control
*)kcontrol
->private_value
;
2867 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2868 unsigned int reg
= mc
->reg
;
2869 unsigned int reg2
= mc
->rreg
;
2870 unsigned int shift
= mc
->shift
;
2872 unsigned int mask
= (1 << fls(max
)) - 1;
2873 unsigned int invert
= mc
->invert
;
2875 ucontrol
->value
.integer
.value
[0] =
2876 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2877 ucontrol
->value
.integer
.value
[1] =
2878 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2880 ucontrol
->value
.integer
.value
[0] =
2881 max
- ucontrol
->value
.integer
.value
[0];
2882 ucontrol
->value
.integer
.value
[1] =
2883 max
- ucontrol
->value
.integer
.value
[1];
2888 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2891 * snd_soc_put_volsw_2r - double mixer set callback
2892 * @kcontrol: mixer control
2893 * @ucontrol: control element information
2895 * Callback to set the value of a double mixer control that spans 2 registers.
2897 * Returns 0 for success.
2899 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2900 struct snd_ctl_elem_value
*ucontrol
)
2902 struct soc_mixer_control
*mc
=
2903 (struct soc_mixer_control
*)kcontrol
->private_value
;
2904 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2905 unsigned int reg
= mc
->reg
;
2906 unsigned int reg2
= mc
->rreg
;
2907 unsigned int shift
= mc
->shift
;
2909 unsigned int mask
= (1 << fls(max
)) - 1;
2910 unsigned int invert
= mc
->invert
;
2912 unsigned int val
, val2
, val_mask
;
2914 val_mask
= mask
<< shift
;
2915 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2916 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2924 val2
= val2
<< shift
;
2926 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2930 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2933 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2936 * snd_soc_info_volsw_s8 - signed mixer info callback
2937 * @kcontrol: mixer control
2938 * @uinfo: control element information
2940 * Callback to provide information about a signed mixer control.
2942 * Returns 0 for success.
2944 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2945 struct snd_ctl_elem_info
*uinfo
)
2947 struct soc_mixer_control
*mc
=
2948 (struct soc_mixer_control
*)kcontrol
->private_value
;
2952 if (!mc
->platform_max
)
2953 mc
->platform_max
= mc
->max
;
2954 platform_max
= mc
->platform_max
;
2956 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2958 uinfo
->value
.integer
.min
= 0;
2959 uinfo
->value
.integer
.max
= platform_max
- min
;
2962 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2965 * snd_soc_get_volsw_s8 - signed mixer get callback
2966 * @kcontrol: mixer control
2967 * @ucontrol: control element information
2969 * Callback to get the value of a signed mixer control.
2971 * Returns 0 for success.
2973 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2974 struct snd_ctl_elem_value
*ucontrol
)
2976 struct soc_mixer_control
*mc
=
2977 (struct soc_mixer_control
*)kcontrol
->private_value
;
2978 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2979 unsigned int reg
= mc
->reg
;
2981 int val
= snd_soc_read(codec
, reg
);
2983 ucontrol
->value
.integer
.value
[0] =
2984 ((signed char)(val
& 0xff))-min
;
2985 ucontrol
->value
.integer
.value
[1] =
2986 ((signed char)((val
>> 8) & 0xff))-min
;
2989 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2992 * snd_soc_put_volsw_sgn - signed mixer put callback
2993 * @kcontrol: mixer control
2994 * @ucontrol: control element information
2996 * Callback to set the value of a signed mixer control.
2998 * Returns 0 for success.
3000 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
3001 struct snd_ctl_elem_value
*ucontrol
)
3003 struct soc_mixer_control
*mc
=
3004 (struct soc_mixer_control
*)kcontrol
->private_value
;
3005 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3006 unsigned int reg
= mc
->reg
;
3010 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
3011 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
3013 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
3015 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
3018 * snd_soc_limit_volume - Set new limit to an existing volume control.
3020 * @codec: where to look for the control
3021 * @name: Name of the control
3022 * @max: new maximum limit
3024 * Return 0 for success, else error.
3026 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3027 const char *name
, int max
)
3029 struct snd_card
*card
= codec
->card
->snd_card
;
3030 struct snd_kcontrol
*kctl
;
3031 struct soc_mixer_control
*mc
;
3035 /* Sanity check for name and max */
3036 if (unlikely(!name
|| max
<= 0))
3039 list_for_each_entry(kctl
, &card
->controls
, list
) {
3040 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3046 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3047 if (max
<= mc
->max
) {
3048 mc
->platform_max
= max
;
3054 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3057 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
3058 * mixer info callback
3059 * @kcontrol: mixer control
3060 * @uinfo: control element information
3062 * Returns 0 for success.
3064 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3065 struct snd_ctl_elem_info
*uinfo
)
3067 struct soc_mixer_control
*mc
=
3068 (struct soc_mixer_control
*)kcontrol
->private_value
;
3072 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3074 uinfo
->value
.integer
.min
= 0;
3075 uinfo
->value
.integer
.max
= max
-min
;
3079 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
3082 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
3083 * mixer get callback
3084 * @kcontrol: mixer control
3085 * @uinfo: control element information
3087 * Returns 0 for success.
3089 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3090 struct snd_ctl_elem_value
*ucontrol
)
3092 struct soc_mixer_control
*mc
=
3093 (struct soc_mixer_control
*)kcontrol
->private_value
;
3094 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3095 unsigned int mask
= (1<<mc
->shift
)-1;
3097 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
3098 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3100 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
3101 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
3104 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
3107 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
3108 * mixer put callback
3109 * @kcontrol: mixer control
3110 * @uinfo: control element information
3112 * Returns 0 for success.
3114 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3115 struct snd_ctl_elem_value
*ucontrol
)
3117 struct soc_mixer_control
*mc
=
3118 (struct soc_mixer_control
*)kcontrol
->private_value
;
3119 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3120 unsigned int mask
= (1<<mc
->shift
)-1;
3123 unsigned int val
, valr
, oval
, ovalr
;
3125 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
3127 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
3130 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
3131 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3135 ret
= snd_soc_write(codec
, mc
->reg
, val
);
3139 if (ovalr
!= valr
) {
3140 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
3147 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
3150 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3152 * @clk_id: DAI specific clock ID
3153 * @freq: new clock frequency in Hz
3154 * @dir: new clock direction - input/output.
3156 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3158 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3159 unsigned int freq
, int dir
)
3161 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3162 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3163 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3164 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
,
3169 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3172 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3174 * @clk_id: DAI specific clock ID
3175 * @freq: new clock frequency in Hz
3176 * @dir: new clock direction - input/output.
3178 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3180 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3181 unsigned int freq
, int dir
)
3183 if (codec
->driver
->set_sysclk
)
3184 return codec
->driver
->set_sysclk(codec
, clk_id
, freq
, dir
);
3188 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3191 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3193 * @div_id: DAI specific clock divider ID
3194 * @div: new clock divisor.
3196 * Configures the clock dividers. This is used to derive the best DAI bit and
3197 * frame clocks from the system or master clock. It's best to set the DAI bit
3198 * and frame clocks as low as possible to save system power.
3200 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3201 int div_id
, int div
)
3203 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3204 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3208 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3211 * snd_soc_dai_set_pll - configure DAI PLL.
3213 * @pll_id: DAI specific PLL ID
3214 * @source: DAI specific source for the PLL
3215 * @freq_in: PLL input clock frequency in Hz
3216 * @freq_out: requested PLL output clock frequency in Hz
3218 * Configures and enables PLL to generate output clock based on input clock.
3220 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3221 unsigned int freq_in
, unsigned int freq_out
)
3223 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3224 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3226 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3227 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3232 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3235 * snd_soc_codec_set_pll - configure codec PLL.
3237 * @pll_id: DAI specific PLL ID
3238 * @source: DAI specific source for the PLL
3239 * @freq_in: PLL input clock frequency in Hz
3240 * @freq_out: requested PLL output clock frequency in Hz
3242 * Configures and enables PLL to generate output clock based on input clock.
3244 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3245 unsigned int freq_in
, unsigned int freq_out
)
3247 if (codec
->driver
->set_pll
)
3248 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3253 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3256 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3258 * @fmt: SND_SOC_DAIFMT_ format value.
3260 * Configures the DAI hardware format and clocking.
3262 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3264 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
3265 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3269 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3272 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3274 * @tx_mask: bitmask representing active TX slots.
3275 * @rx_mask: bitmask representing active RX slots.
3276 * @slots: Number of slots in use.
3277 * @slot_width: Width in bits for each slot.
3279 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3282 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3283 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3285 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3286 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3291 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3294 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3296 * @tx_num: how many TX channels
3297 * @tx_slot: pointer to an array which imply the TX slot number channel
3299 * @rx_num: how many RX channels
3300 * @rx_slot: pointer to an array which imply the RX slot number channel
3303 * configure the relationship between channel number and TDM slot number.
3305 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3306 unsigned int tx_num
, unsigned int *tx_slot
,
3307 unsigned int rx_num
, unsigned int *rx_slot
)
3309 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3310 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3315 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3318 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3320 * @tristate: tristate enable
3322 * Tristates the DAI so that others can use it.
3324 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3326 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3327 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3331 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3334 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3336 * @mute: mute enable
3338 * Mutes the DAI DAC.
3340 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3342 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3343 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3347 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3350 * snd_soc_register_card - Register a card with the ASoC core
3352 * @card: Card to register
3355 int snd_soc_register_card(struct snd_soc_card
*card
)
3359 if (!card
->name
|| !card
->dev
)
3362 dev_set_drvdata(card
->dev
, card
);
3364 snd_soc_initialize_card_lists(card
);
3366 soc_init_card_debugfs(card
);
3368 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
3369 (card
->num_links
+ card
->num_aux_devs
),
3371 if (card
->rtd
== NULL
)
3373 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3375 for (i
= 0; i
< card
->num_links
; i
++)
3376 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3378 INIT_LIST_HEAD(&card
->list
);
3379 card
->instantiated
= 0;
3380 mutex_init(&card
->mutex
);
3382 mutex_lock(&client_mutex
);
3383 list_add(&card
->list
, &card_list
);
3384 snd_soc_instantiate_cards();
3385 mutex_unlock(&client_mutex
);
3387 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
3391 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3394 * snd_soc_unregister_card - Unregister a card with the ASoC core
3396 * @card: Card to unregister
3399 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3401 if (card
->instantiated
)
3402 soc_cleanup_card_resources(card
);
3403 mutex_lock(&client_mutex
);
3404 list_del(&card
->list
);
3405 mutex_unlock(&client_mutex
);
3406 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3410 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3413 * Simplify DAI link configuration by removing ".-1" from device names
3414 * and sanitizing names.
3416 static char *fmt_single_name(struct device
*dev
, int *id
)
3418 char *found
, name
[NAME_SIZE
];
3421 if (dev_name(dev
) == NULL
)
3424 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3426 /* are we a "%s.%d" name (platform and SPI components) */
3427 found
= strstr(name
, dev
->driver
->name
);
3430 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3432 /* discard ID from name if ID == -1 */
3434 found
[strlen(dev
->driver
->name
)] = '\0';
3438 /* I2C component devices are named "bus-addr" */
3439 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3440 char tmp
[NAME_SIZE
];
3442 /* create unique ID number from I2C addr and bus */
3443 *id
= ((id1
& 0xffff) << 16) + id2
;
3445 /* sanitize component name for DAI link creation */
3446 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3447 strlcpy(name
, tmp
, NAME_SIZE
);
3452 return kstrdup(name
, GFP_KERNEL
);
3456 * Simplify DAI link naming for single devices with multiple DAIs by removing
3457 * any ".-1" and using the DAI name (instead of device name).
3459 static inline char *fmt_multiple_name(struct device
*dev
,
3460 struct snd_soc_dai_driver
*dai_drv
)
3462 if (dai_drv
->name
== NULL
) {
3463 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
3468 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3472 * snd_soc_register_dai - Register a DAI with the ASoC core
3474 * @dai: DAI to register
3476 int snd_soc_register_dai(struct device
*dev
,
3477 struct snd_soc_dai_driver
*dai_drv
)
3479 struct snd_soc_dai
*dai
;
3481 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3483 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3487 /* create DAI component name */
3488 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3489 if (dai
->name
== NULL
) {
3495 dai
->driver
= dai_drv
;
3496 if (!dai
->driver
->ops
)
3497 dai
->driver
->ops
= &null_dai_ops
;
3499 mutex_lock(&client_mutex
);
3500 list_add(&dai
->list
, &dai_list
);
3501 snd_soc_instantiate_cards();
3502 mutex_unlock(&client_mutex
);
3504 pr_debug("Registered DAI '%s'\n", dai
->name
);
3508 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3511 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3513 * @dai: DAI to unregister
3515 void snd_soc_unregister_dai(struct device
*dev
)
3517 struct snd_soc_dai
*dai
;
3519 list_for_each_entry(dai
, &dai_list
, list
) {
3520 if (dev
== dai
->dev
)
3526 mutex_lock(&client_mutex
);
3527 list_del(&dai
->list
);
3528 mutex_unlock(&client_mutex
);
3530 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3534 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3537 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3539 * @dai: Array of DAIs to register
3540 * @count: Number of DAIs
3542 int snd_soc_register_dais(struct device
*dev
,
3543 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3545 struct snd_soc_dai
*dai
;
3548 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3550 for (i
= 0; i
< count
; i
++) {
3552 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3558 /* create DAI component name */
3559 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3560 if (dai
->name
== NULL
) {
3567 dai
->driver
= &dai_drv
[i
];
3568 if (dai
->driver
->id
)
3569 dai
->id
= dai
->driver
->id
;
3572 if (!dai
->driver
->ops
)
3573 dai
->driver
->ops
= &null_dai_ops
;
3575 mutex_lock(&client_mutex
);
3576 list_add(&dai
->list
, &dai_list
);
3577 mutex_unlock(&client_mutex
);
3579 pr_debug("Registered DAI '%s'\n", dai
->name
);
3582 mutex_lock(&client_mutex
);
3583 snd_soc_instantiate_cards();
3584 mutex_unlock(&client_mutex
);
3588 for (i
--; i
>= 0; i
--)
3589 snd_soc_unregister_dai(dev
);
3593 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3596 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3598 * @dai: Array of DAIs to unregister
3599 * @count: Number of DAIs
3601 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3605 for (i
= 0; i
< count
; i
++)
3606 snd_soc_unregister_dai(dev
);
3608 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3611 * snd_soc_register_platform - Register a platform with the ASoC core
3613 * @platform: platform to register
3615 int snd_soc_register_platform(struct device
*dev
,
3616 struct snd_soc_platform_driver
*platform_drv
)
3618 struct snd_soc_platform
*platform
;
3620 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3622 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3623 if (platform
== NULL
)
3626 /* create platform component name */
3627 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3628 if (platform
->name
== NULL
) {
3633 platform
->dev
= dev
;
3634 platform
->driver
= platform_drv
;
3636 mutex_lock(&client_mutex
);
3637 list_add(&platform
->list
, &platform_list
);
3638 snd_soc_instantiate_cards();
3639 mutex_unlock(&client_mutex
);
3641 pr_debug("Registered platform '%s'\n", platform
->name
);
3645 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3648 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3650 * @platform: platform to unregister
3652 void snd_soc_unregister_platform(struct device
*dev
)
3654 struct snd_soc_platform
*platform
;
3656 list_for_each_entry(platform
, &platform_list
, list
) {
3657 if (dev
== platform
->dev
)
3663 mutex_lock(&client_mutex
);
3664 list_del(&platform
->list
);
3665 mutex_unlock(&client_mutex
);
3667 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3668 kfree(platform
->name
);
3671 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3673 static u64 codec_format_map
[] = {
3674 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3675 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3676 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3677 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3678 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3679 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3680 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3681 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3682 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3683 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3684 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3685 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3686 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3687 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3688 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3689 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3692 /* Fix up the DAI formats for endianness: codecs don't actually see
3693 * the endianness of the data but we're using the CPU format
3694 * definitions which do need to include endianness so we ensure that
3695 * codec DAIs always have both big and little endian variants set.
3697 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3701 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3702 if (stream
->formats
& codec_format_map
[i
])
3703 stream
->formats
|= codec_format_map
[i
];
3707 * snd_soc_register_codec - Register a codec with the ASoC core
3709 * @codec: codec to register
3711 int snd_soc_register_codec(struct device
*dev
,
3712 const struct snd_soc_codec_driver
*codec_drv
,
3713 struct snd_soc_dai_driver
*dai_drv
,
3717 struct snd_soc_codec
*codec
;
3720 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3722 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3726 /* create CODEC component name */
3727 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3728 if (codec
->name
== NULL
) {
3733 if (codec_drv
->compress_type
)
3734 codec
->compress_type
= codec_drv
->compress_type
;
3736 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3738 codec
->write
= codec_drv
->write
;
3739 codec
->read
= codec_drv
->read
;
3740 codec
->volatile_register
= codec_drv
->volatile_register
;
3741 codec
->readable_register
= codec_drv
->readable_register
;
3742 codec
->writable_register
= codec_drv
->writable_register
;
3743 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3744 codec
->dapm
.dev
= dev
;
3745 codec
->dapm
.codec
= codec
;
3746 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3748 codec
->driver
= codec_drv
;
3749 codec
->num_dai
= num_dai
;
3750 mutex_init(&codec
->mutex
);
3752 /* allocate CODEC register cache */
3753 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3754 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3755 codec
->reg_size
= reg_size
;
3756 /* it is necessary to make a copy of the default register cache
3757 * because in the case of using a compression type that requires
3758 * the default register cache to be marked as __devinitconst the
3759 * kernel might have freed the array by the time we initialize
3762 if (codec_drv
->reg_cache_default
) {
3763 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3764 reg_size
, GFP_KERNEL
);
3765 if (!codec
->reg_def_copy
) {
3772 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3773 if (!codec
->volatile_register
)
3774 codec
->volatile_register
= snd_soc_default_volatile_register
;
3775 if (!codec
->readable_register
)
3776 codec
->readable_register
= snd_soc_default_readable_register
;
3777 if (!codec
->writable_register
)
3778 codec
->writable_register
= snd_soc_default_writable_register
;
3781 for (i
= 0; i
< num_dai
; i
++) {
3782 fixup_codec_formats(&dai_drv
[i
].playback
);
3783 fixup_codec_formats(&dai_drv
[i
].capture
);
3786 /* register any DAIs */
3788 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3793 mutex_lock(&client_mutex
);
3794 list_add(&codec
->list
, &codec_list
);
3795 snd_soc_instantiate_cards();
3796 mutex_unlock(&client_mutex
);
3798 pr_debug("Registered codec '%s'\n", codec
->name
);
3802 kfree(codec
->reg_def_copy
);
3803 codec
->reg_def_copy
= NULL
;
3808 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3811 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3813 * @codec: codec to unregister
3815 void snd_soc_unregister_codec(struct device
*dev
)
3817 struct snd_soc_codec
*codec
;
3820 list_for_each_entry(codec
, &codec_list
, list
) {
3821 if (dev
== codec
->dev
)
3828 for (i
= 0; i
< codec
->num_dai
; i
++)
3829 snd_soc_unregister_dai(dev
);
3831 mutex_lock(&client_mutex
);
3832 list_del(&codec
->list
);
3833 mutex_unlock(&client_mutex
);
3835 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3837 snd_soc_cache_exit(codec
);
3838 kfree(codec
->reg_def_copy
);
3842 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3844 static int __init
snd_soc_init(void)
3846 #ifdef CONFIG_DEBUG_FS
3847 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3848 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3850 "ASoC: Failed to create debugfs directory\n");
3851 snd_soc_debugfs_root
= NULL
;
3854 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3856 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3858 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3860 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3862 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3863 &platform_list_fops
))
3864 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3867 snd_soc_util_init();
3869 return platform_driver_register(&soc_driver
);
3871 module_init(snd_soc_init
);
3873 static void __exit
snd_soc_exit(void)
3875 snd_soc_util_exit();
3877 #ifdef CONFIG_DEBUG_FS
3878 debugfs_remove_recursive(snd_soc_debugfs_root
);
3880 platform_driver_unregister(&soc_driver
);
3882 module_exit(snd_soc_exit
);
3884 /* Module information */
3885 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3886 MODULE_DESCRIPTION("ALSA SoC Core");
3887 MODULE_LICENSE("GPL");
3888 MODULE_ALIAS("platform:soc-audio");