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;
1127 codec
->cache_sync
= 1;
1130 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
1136 for (i
= 0; i
< card
->num_rtd
; i
++) {
1137 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1139 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1142 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
1143 cpu_dai
->driver
->suspend(cpu_dai
);
1146 if (card
->suspend_post
)
1147 card
->suspend_post(card
);
1151 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
1153 /* deferred resume work, so resume can complete before we finished
1154 * setting our codec back up, which can be very slow on I2C
1156 static void soc_resume_deferred(struct work_struct
*work
)
1158 struct snd_soc_card
*card
=
1159 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
1160 struct snd_soc_codec
*codec
;
1163 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1164 * so userspace apps are blocked from touching us
1167 dev_dbg(card
->dev
, "starting resume work\n");
1169 /* Bring us up into D2 so that DAPM starts enabling things */
1170 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
1172 if (card
->resume_pre
)
1173 card
->resume_pre(card
);
1175 /* resume AC97 DAIs */
1176 for (i
= 0; i
< card
->num_rtd
; i
++) {
1177 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1179 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1182 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1183 cpu_dai
->driver
->resume(cpu_dai
);
1186 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
1187 /* If the CODEC was idle over suspend then it will have been
1188 * left with bias OFF or STANDBY and suspended so we must now
1189 * resume. Otherwise the suspend was suppressed.
1191 if (codec
->driver
->resume
&& codec
->suspended
) {
1192 switch (codec
->dapm
.bias_level
) {
1193 case SND_SOC_BIAS_STANDBY
:
1194 case SND_SOC_BIAS_OFF
:
1195 codec
->driver
->resume(codec
);
1196 codec
->suspended
= 0;
1199 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1205 for (i
= 0; i
< card
->num_rtd
; i
++) {
1206 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1208 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1211 if (driver
->playback
.stream_name
!= NULL
)
1212 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1213 SND_SOC_DAPM_STREAM_RESUME
);
1215 if (driver
->capture
.stream_name
!= NULL
)
1216 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1217 SND_SOC_DAPM_STREAM_RESUME
);
1220 /* unmute any active DACs */
1221 for (i
= 0; i
< card
->num_rtd
; i
++) {
1222 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1223 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1225 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1228 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1229 drv
->ops
->digital_mute(dai
, 0);
1232 for (i
= 0; i
< card
->num_rtd
; i
++) {
1233 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1234 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1236 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1239 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1240 cpu_dai
->driver
->resume(cpu_dai
);
1241 if (platform
->driver
->resume
&& platform
->suspended
) {
1242 platform
->driver
->resume(cpu_dai
);
1243 platform
->suspended
= 0;
1247 if (card
->resume_post
)
1248 card
->resume_post(card
);
1250 dev_dbg(card
->dev
, "resume work completed\n");
1252 /* userspace can access us now we are back as we were before */
1253 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1256 /* powers up audio subsystem after a suspend */
1257 int snd_soc_resume(struct device
*dev
)
1259 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1260 int i
, ac97_control
= 0;
1262 /* AC97 devices might have other drivers hanging off them so
1263 * need to resume immediately. Other drivers don't have that
1264 * problem and may take a substantial amount of time to resume
1265 * due to I/O costs and anti-pop so handle them out of line.
1267 for (i
= 0; i
< card
->num_rtd
; i
++) {
1268 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1269 ac97_control
|= cpu_dai
->driver
->ac97_control
;
1272 dev_dbg(dev
, "Resuming AC97 immediately\n");
1273 soc_resume_deferred(&card
->deferred_resume_work
);
1275 dev_dbg(dev
, "Scheduling resume work\n");
1276 if (!schedule_work(&card
->deferred_resume_work
))
1277 dev_err(dev
, "resume work item may be lost\n");
1282 EXPORT_SYMBOL_GPL(snd_soc_resume
);
1284 #define snd_soc_suspend NULL
1285 #define snd_soc_resume NULL
1288 static struct snd_soc_dai_ops null_dai_ops
= {
1291 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1293 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1294 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1295 struct snd_soc_codec
*codec
;
1296 struct snd_soc_platform
*platform
;
1297 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1298 const char *platform_name
;
1302 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1304 /* do we already have the CPU DAI for this link ? */
1308 /* no, then find CPU DAI from registered DAIs*/
1309 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1310 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1311 rtd
->cpu_dai
= cpu_dai
;
1315 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1316 dai_link
->cpu_dai_name
);
1319 /* do we already have the CODEC for this link ? */
1324 /* no, then find CODEC from registered CODECs*/
1325 list_for_each_entry(codec
, &codec_list
, list
) {
1326 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1329 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1330 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1331 if (codec
->dev
== codec_dai
->dev
&&
1332 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1333 rtd
->codec_dai
= codec_dai
;
1337 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1338 dai_link
->codec_dai_name
);
1343 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1344 dai_link
->codec_name
);
1347 /* do we need a platform? */
1351 /* if there's no platform we match on the empty platform */
1352 platform_name
= dai_link
->platform_name
;
1354 platform_name
= "snd-soc-dummy";
1356 /* no, then find one from the set of registered platforms */
1357 list_for_each_entry(platform
, &platform_list
, list
) {
1358 if (!strcmp(platform
->name
, platform_name
)) {
1359 rtd
->platform
= platform
;
1364 dev_dbg(card
->dev
, "platform %s not registered\n",
1365 dai_link
->platform_name
);
1369 /* mark rtd as complete if we found all 4 of our client devices */
1370 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1377 static void soc_remove_codec(struct snd_soc_codec
*codec
)
1381 if (codec
->driver
->remove
) {
1382 err
= codec
->driver
->remove(codec
);
1385 "asoc: failed to remove %s: %d\n",
1389 /* Make sure all DAPM widgets are freed */
1390 snd_soc_dapm_free(&codec
->dapm
);
1392 soc_cleanup_codec_debugfs(codec
);
1394 list_del(&codec
->card_list
);
1395 module_put(codec
->dev
->driver
->owner
);
1398 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1400 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1401 struct snd_soc_codec
*codec
= rtd
->codec
;
1402 struct snd_soc_platform
*platform
= rtd
->platform
;
1403 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1406 /* unregister the rtd device */
1407 if (rtd
->dev_registered
) {
1408 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1409 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1410 device_unregister(&rtd
->dev
);
1411 rtd
->dev_registered
= 0;
1414 /* remove the CODEC DAI */
1415 if (codec_dai
&& codec_dai
->probed
) {
1416 if (codec_dai
->driver
->remove
) {
1417 err
= codec_dai
->driver
->remove(codec_dai
);
1419 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1421 codec_dai
->probed
= 0;
1422 list_del(&codec_dai
->card_list
);
1425 /* remove the platform */
1426 if (platform
&& platform
->probed
) {
1427 if (platform
->driver
->remove
) {
1428 err
= platform
->driver
->remove(platform
);
1430 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1432 platform
->probed
= 0;
1433 list_del(&platform
->card_list
);
1434 module_put(platform
->dev
->driver
->owner
);
1437 /* remove the CODEC */
1438 if (codec
&& codec
->probed
)
1439 soc_remove_codec(codec
);
1441 /* remove the cpu_dai */
1442 if (cpu_dai
&& cpu_dai
->probed
) {
1443 if (cpu_dai
->driver
->remove
) {
1444 err
= cpu_dai
->driver
->remove(cpu_dai
);
1446 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1448 cpu_dai
->probed
= 0;
1449 list_del(&cpu_dai
->card_list
);
1450 module_put(cpu_dai
->dev
->driver
->owner
);
1454 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1458 for (i
= 0; i
< card
->num_rtd
; i
++)
1459 soc_remove_dai_link(card
, i
);
1464 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1465 struct snd_soc_codec
*codec
)
1469 if (card
->codec_conf
== NULL
)
1472 for (i
= 0; i
< card
->num_configs
; i
++) {
1473 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1474 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1475 codec
->name_prefix
= map
->name_prefix
;
1481 static int soc_probe_codec(struct snd_soc_card
*card
,
1482 struct snd_soc_codec
*codec
)
1485 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1488 codec
->dapm
.card
= card
;
1489 soc_set_name_prefix(card
, codec
);
1491 if (!try_module_get(codec
->dev
->driver
->owner
))
1494 soc_init_codec_debugfs(codec
);
1496 if (driver
->dapm_widgets
)
1497 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1498 driver
->num_dapm_widgets
);
1500 if (driver
->probe
) {
1501 ret
= driver
->probe(codec
);
1504 "asoc: failed to probe CODEC %s: %d\n",
1510 if (driver
->controls
)
1511 snd_soc_add_controls(codec
, driver
->controls
,
1512 driver
->num_controls
);
1513 if (driver
->dapm_routes
)
1514 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1515 driver
->num_dapm_routes
);
1517 /* mark codec as probed and add to card codec list */
1519 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1520 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1525 soc_cleanup_codec_debugfs(codec
);
1526 module_put(codec
->dev
->driver
->owner
);
1531 static void rtd_release(struct device
*dev
) {}
1533 static int soc_post_component_init(struct snd_soc_card
*card
,
1534 struct snd_soc_codec
*codec
,
1535 int num
, int dailess
)
1537 struct snd_soc_dai_link
*dai_link
= NULL
;
1538 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1539 struct snd_soc_pcm_runtime
*rtd
;
1540 const char *temp
, *name
;
1544 dai_link
= &card
->dai_link
[num
];
1545 rtd
= &card
->rtd
[num
];
1546 name
= dai_link
->name
;
1548 aux_dev
= &card
->aux_dev
[num
];
1549 rtd
= &card
->rtd_aux
[num
];
1550 name
= aux_dev
->name
;
1554 /* machine controls, routes and widgets are not prefixed */
1555 temp
= codec
->name_prefix
;
1556 codec
->name_prefix
= NULL
;
1558 /* do machine specific initialization */
1559 if (!dailess
&& dai_link
->init
)
1560 ret
= dai_link
->init(rtd
);
1561 else if (dailess
&& aux_dev
->init
)
1562 ret
= aux_dev
->init(&codec
->dapm
);
1564 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1567 codec
->name_prefix
= temp
;
1569 /* Make sure all DAPM widgets are instantiated */
1570 snd_soc_dapm_new_widgets(&codec
->dapm
);
1572 /* register the rtd device */
1574 rtd
->dev
.parent
= card
->dev
;
1575 rtd
->dev
.release
= rtd_release
;
1576 rtd
->dev
.init_name
= name
;
1577 ret
= device_register(&rtd
->dev
);
1580 "asoc: failed to register runtime device: %d\n", ret
);
1583 rtd
->dev_registered
= 1;
1585 /* add DAPM sysfs entries for this codec */
1586 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1589 "asoc: failed to add codec dapm sysfs entries: %d\n",
1592 /* add codec sysfs entries */
1593 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1596 "asoc: failed to add codec sysfs files: %d\n", ret
);
1601 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1603 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1604 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1605 struct snd_soc_codec
*codec
= rtd
->codec
;
1606 struct snd_soc_platform
*platform
= rtd
->platform
;
1607 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1610 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1612 /* config components */
1613 codec_dai
->codec
= codec
;
1614 cpu_dai
->platform
= platform
;
1615 codec_dai
->card
= card
;
1616 cpu_dai
->card
= card
;
1618 /* set default power off timeout */
1619 rtd
->pmdown_time
= pmdown_time
;
1621 /* probe the cpu_dai */
1622 if (!cpu_dai
->probed
) {
1623 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1626 if (cpu_dai
->driver
->probe
) {
1627 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1629 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1631 module_put(cpu_dai
->dev
->driver
->owner
);
1635 cpu_dai
->probed
= 1;
1636 /* mark cpu_dai as probed and add to card cpu_dai list */
1637 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1640 /* probe the CODEC */
1641 if (!codec
->probed
) {
1642 ret
= soc_probe_codec(card
, codec
);
1647 /* probe the platform */
1648 if (!platform
->probed
) {
1649 if (!try_module_get(platform
->dev
->driver
->owner
))
1652 if (platform
->driver
->probe
) {
1653 ret
= platform
->driver
->probe(platform
);
1655 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1657 module_put(platform
->dev
->driver
->owner
);
1661 /* mark platform as probed and add to card platform list */
1662 platform
->probed
= 1;
1663 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1666 /* probe the CODEC DAI */
1667 if (!codec_dai
->probed
) {
1668 if (codec_dai
->driver
->probe
) {
1669 ret
= codec_dai
->driver
->probe(codec_dai
);
1671 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1677 /* mark cpu_dai as probed and add to card cpu_dai list */
1678 codec_dai
->probed
= 1;
1679 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1682 /* DAPM dai link stream work */
1683 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1685 ret
= soc_post_component_init(card
, codec
, num
, 0);
1689 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1691 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1693 /* create the pcm */
1694 ret
= soc_new_pcm(rtd
, num
);
1696 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1700 /* add platform data for AC97 devices */
1701 if (rtd
->codec_dai
->driver
->ac97_control
)
1702 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1707 #ifdef CONFIG_SND_SOC_AC97_BUS
1708 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1712 /* Only instantiate AC97 if not already done by the adaptor
1713 * for the generic AC97 subsystem.
1715 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1717 * It is possible that the AC97 device is already registered to
1718 * the device subsystem. This happens when the device is created
1719 * via snd_ac97_mixer(). Currently only SoC codec that does so
1720 * is the generic AC97 glue but others migh emerge.
1722 * In those cases we don't try to register the device again.
1724 if (!rtd
->codec
->ac97_created
)
1727 ret
= soc_ac97_dev_register(rtd
->codec
);
1729 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1733 rtd
->codec
->ac97_registered
= 1;
1738 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1740 if (codec
->ac97_registered
) {
1741 soc_ac97_dev_unregister(codec
);
1742 codec
->ac97_registered
= 0;
1747 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1749 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1750 struct snd_soc_codec
*codec
;
1753 /* find CODEC from registered CODECs*/
1754 list_for_each_entry(codec
, &codec_list
, list
) {
1755 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1756 if (codec
->probed
) {
1758 "asoc: codec already probed");
1765 /* codec not found */
1766 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1770 ret
= soc_probe_codec(card
, codec
);
1774 ret
= soc_post_component_init(card
, codec
, num
, 1);
1780 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1782 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1783 struct snd_soc_codec
*codec
= rtd
->codec
;
1785 /* unregister the rtd device */
1786 if (rtd
->dev_registered
) {
1787 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1788 device_unregister(&rtd
->dev
);
1789 rtd
->dev_registered
= 0;
1792 if (codec
&& codec
->probed
)
1793 soc_remove_codec(codec
);
1796 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1797 enum snd_soc_compress_type compress_type
)
1801 if (codec
->cache_init
)
1804 /* override the compress_type if necessary */
1805 if (compress_type
&& codec
->compress_type
!= compress_type
)
1806 codec
->compress_type
= compress_type
;
1807 ret
= snd_soc_cache_init(codec
);
1809 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1813 codec
->cache_init
= 1;
1817 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1819 struct snd_soc_codec
*codec
;
1820 struct snd_soc_codec_conf
*codec_conf
;
1821 enum snd_soc_compress_type compress_type
;
1824 mutex_lock(&card
->mutex
);
1826 if (card
->instantiated
) {
1827 mutex_unlock(&card
->mutex
);
1832 for (i
= 0; i
< card
->num_links
; i
++)
1833 soc_bind_dai_link(card
, i
);
1835 /* bind completed ? */
1836 if (card
->num_rtd
!= card
->num_links
) {
1837 mutex_unlock(&card
->mutex
);
1841 /* initialize the register cache for each available codec */
1842 list_for_each_entry(codec
, &codec_list
, list
) {
1843 if (codec
->cache_init
)
1845 /* by default we don't override the compress_type */
1847 /* check to see if we need to override the compress_type */
1848 for (i
= 0; i
< card
->num_configs
; ++i
) {
1849 codec_conf
= &card
->codec_conf
[i
];
1850 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1851 compress_type
= codec_conf
->compress_type
;
1852 if (compress_type
&& compress_type
1853 != codec
->compress_type
)
1857 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1859 mutex_unlock(&card
->mutex
);
1864 /* card bind complete so register a sound card */
1865 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1866 card
->owner
, 0, &card
->snd_card
);
1868 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1870 mutex_unlock(&card
->mutex
);
1873 card
->snd_card
->dev
= card
->dev
;
1875 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1876 card
->dapm
.dev
= card
->dev
;
1877 card
->dapm
.card
= card
;
1878 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1880 #ifdef CONFIG_DEBUG_FS
1881 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1884 #ifdef CONFIG_PM_SLEEP
1885 /* deferred resume work */
1886 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1889 if (card
->dapm_widgets
)
1890 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1891 card
->num_dapm_widgets
);
1893 /* initialise the sound card only once */
1895 ret
= card
->probe(card
);
1897 goto card_probe_error
;
1900 for (i
= 0; i
< card
->num_links
; i
++) {
1901 ret
= soc_probe_dai_link(card
, i
);
1903 pr_err("asoc: failed to instantiate card %s: %d\n",
1909 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1910 ret
= soc_probe_aux_dev(card
, i
);
1912 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1914 goto probe_aux_dev_err
;
1918 /* We should have a non-codec control add function but we don't */
1920 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1921 struct snd_soc_codec
,
1924 card
->num_controls
);
1926 if (card
->dapm_routes
)
1927 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1928 card
->num_dapm_routes
);
1930 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1932 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1933 "%s", card
->long_name
? card
->long_name
: card
->name
);
1934 if (card
->driver_name
)
1935 strlcpy(card
->snd_card
->driver
, card
->driver_name
,
1936 sizeof(card
->snd_card
->driver
));
1938 if (card
->late_probe
) {
1939 ret
= card
->late_probe(card
);
1941 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1943 goto probe_aux_dev_err
;
1947 ret
= snd_card_register(card
->snd_card
);
1949 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1950 goto probe_aux_dev_err
;
1953 #ifdef CONFIG_SND_SOC_AC97_BUS
1954 /* register any AC97 codecs */
1955 for (i
= 0; i
< card
->num_rtd
; i
++) {
1956 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1958 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1960 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1961 goto probe_aux_dev_err
;
1966 card
->instantiated
= 1;
1967 mutex_unlock(&card
->mutex
);
1971 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1972 soc_remove_aux_dev(card
, i
);
1975 soc_remove_dai_links(card
);
1981 snd_card_free(card
->snd_card
);
1983 mutex_unlock(&card
->mutex
);
1987 * Attempt to initialise any uninitialised cards. Must be called with
1990 static void snd_soc_instantiate_cards(void)
1992 struct snd_soc_card
*card
;
1993 list_for_each_entry(card
, &card_list
, list
)
1994 snd_soc_instantiate_card(card
);
1997 /* probes a new socdev */
1998 static int soc_probe(struct platform_device
*pdev
)
2000 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2004 * no card, so machine driver should be registering card
2005 * we should not be here in that case so ret error
2010 /* Bodge while we unpick instantiation */
2011 card
->dev
= &pdev
->dev
;
2013 ret
= snd_soc_register_card(card
);
2015 dev_err(&pdev
->dev
, "Failed to register card\n");
2022 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2026 /* make sure any delayed work runs */
2027 for (i
= 0; i
< card
->num_rtd
; i
++) {
2028 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2029 flush_delayed_work_sync(&rtd
->delayed_work
);
2032 /* remove auxiliary devices */
2033 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2034 soc_remove_aux_dev(card
, i
);
2036 /* remove and free each DAI */
2037 soc_remove_dai_links(card
);
2039 soc_cleanup_card_debugfs(card
);
2041 /* remove the card */
2045 snd_soc_dapm_free(&card
->dapm
);
2048 snd_card_free(card
->snd_card
);
2053 /* removes a socdev */
2054 static int soc_remove(struct platform_device
*pdev
)
2056 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2058 snd_soc_unregister_card(card
);
2062 int snd_soc_poweroff(struct device
*dev
)
2064 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2067 if (!card
->instantiated
)
2070 /* Flush out pmdown_time work - we actually do want to run it
2071 * now, we're shutting down so no imminent restart. */
2072 for (i
= 0; i
< card
->num_rtd
; i
++) {
2073 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2074 flush_delayed_work_sync(&rtd
->delayed_work
);
2077 snd_soc_dapm_shutdown(card
);
2081 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2083 const struct dev_pm_ops snd_soc_pm_ops
= {
2084 .suspend
= snd_soc_suspend
,
2085 .resume
= snd_soc_resume
,
2086 .poweroff
= snd_soc_poweroff
,
2088 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2090 /* ASoC platform driver */
2091 static struct platform_driver soc_driver
= {
2093 .name
= "soc-audio",
2094 .owner
= THIS_MODULE
,
2095 .pm
= &snd_soc_pm_ops
,
2098 .remove
= soc_remove
,
2101 /* create a new pcm */
2102 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
2104 struct snd_soc_codec
*codec
= rtd
->codec
;
2105 struct snd_soc_platform
*platform
= rtd
->platform
;
2106 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
2107 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2108 struct snd_pcm
*pcm
;
2110 int ret
= 0, playback
= 0, capture
= 0;
2112 /* check client and interface hw capabilities */
2113 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
2114 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
2116 if (codec_dai
->driver
->playback
.channels_min
)
2118 if (codec_dai
->driver
->capture
.channels_min
)
2121 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
2122 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
2123 num
, playback
, capture
, &pcm
);
2125 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
2130 pcm
->private_data
= rtd
;
2131 if (platform
->driver
->ops
) {
2132 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
2133 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
2134 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
2135 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
2136 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
2137 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
2138 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
2142 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
2145 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
2147 if (platform
->driver
->pcm_new
) {
2148 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
,
2151 pr_err("asoc: platform pcm constructor failed\n");
2156 pcm
->private_free
= platform
->driver
->pcm_free
;
2157 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
2163 * snd_soc_codec_volatile_register: Report if a register is volatile.
2165 * @codec: CODEC to query.
2166 * @reg: Register to query.
2168 * Boolean function indiciating if a CODEC register is volatile.
2170 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
2173 if (codec
->volatile_register
)
2174 return codec
->volatile_register(codec
, reg
);
2178 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
2181 * snd_soc_codec_readable_register: Report if a register is readable.
2183 * @codec: CODEC to query.
2184 * @reg: Register to query.
2186 * Boolean function indicating if a CODEC register is readable.
2188 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
2191 if (codec
->readable_register
)
2192 return codec
->readable_register(codec
, reg
);
2196 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
2199 * snd_soc_codec_writable_register: Report if a register is writable.
2201 * @codec: CODEC to query.
2202 * @reg: Register to query.
2204 * Boolean function indicating if a CODEC register is writable.
2206 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2209 if (codec
->writable_register
)
2210 return codec
->writable_register(codec
, reg
);
2214 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2217 * snd_soc_new_ac97_codec - initailise AC97 device
2218 * @codec: audio codec
2219 * @ops: AC97 bus operations
2220 * @num: AC97 codec number
2222 * Initialises AC97 codec resources for use by ad-hoc devices only.
2224 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2225 struct snd_ac97_bus_ops
*ops
, int num
)
2227 mutex_lock(&codec
->mutex
);
2229 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2230 if (codec
->ac97
== NULL
) {
2231 mutex_unlock(&codec
->mutex
);
2235 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2236 if (codec
->ac97
->bus
== NULL
) {
2239 mutex_unlock(&codec
->mutex
);
2243 codec
->ac97
->bus
->ops
= ops
;
2244 codec
->ac97
->num
= num
;
2247 * Mark the AC97 device to be created by us. This way we ensure that the
2248 * device will be registered with the device subsystem later on.
2250 codec
->ac97_created
= 1;
2252 mutex_unlock(&codec
->mutex
);
2255 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2258 * snd_soc_free_ac97_codec - free AC97 codec device
2259 * @codec: audio codec
2261 * Frees AC97 codec device resources.
2263 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2265 mutex_lock(&codec
->mutex
);
2266 #ifdef CONFIG_SND_SOC_AC97_BUS
2267 soc_unregister_ac97_dai_link(codec
);
2269 kfree(codec
->ac97
->bus
);
2272 codec
->ac97_created
= 0;
2273 mutex_unlock(&codec
->mutex
);
2275 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2277 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2281 ret
= codec
->read(codec
, reg
);
2282 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2283 trace_snd_soc_reg_read(codec
, reg
, ret
);
2287 EXPORT_SYMBOL_GPL(snd_soc_read
);
2289 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2290 unsigned int reg
, unsigned int val
)
2292 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2293 trace_snd_soc_reg_write(codec
, reg
, val
);
2294 return codec
->write(codec
, reg
, val
);
2296 EXPORT_SYMBOL_GPL(snd_soc_write
);
2298 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2299 unsigned int reg
, const void *data
, size_t len
)
2301 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2303 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2306 * snd_soc_update_bits - update codec register bits
2307 * @codec: audio codec
2308 * @reg: codec register
2309 * @mask: register mask
2312 * Writes new register value.
2314 * Returns 1 for change, 0 for no change, or negative error code.
2316 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2317 unsigned int mask
, unsigned int value
)
2320 unsigned int old
, new;
2323 ret
= snd_soc_read(codec
, reg
);
2328 new = (old
& ~mask
) | value
;
2329 change
= old
!= new;
2331 ret
= snd_soc_write(codec
, reg
, new);
2338 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2341 * snd_soc_update_bits_locked - update codec register bits
2342 * @codec: audio codec
2343 * @reg: codec register
2344 * @mask: register mask
2347 * Writes new register value, and takes the codec mutex.
2349 * Returns 1 for change else 0.
2351 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2352 unsigned short reg
, unsigned int mask
,
2357 mutex_lock(&codec
->mutex
);
2358 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2359 mutex_unlock(&codec
->mutex
);
2363 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2366 * snd_soc_test_bits - test register for change
2367 * @codec: audio codec
2368 * @reg: codec register
2369 * @mask: register mask
2372 * Tests a register with a new value and checks if the new value is
2373 * different from the old value.
2375 * Returns 1 for change else 0.
2377 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2378 unsigned int mask
, unsigned int value
)
2381 unsigned int old
, new;
2383 old
= snd_soc_read(codec
, reg
);
2384 new = (old
& ~mask
) | value
;
2385 change
= old
!= new;
2389 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2392 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2393 * @substream: the pcm substream
2394 * @hw: the hardware parameters
2396 * Sets the substream runtime hardware parameters.
2398 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2399 const struct snd_pcm_hardware
*hw
)
2401 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2402 runtime
->hw
.info
= hw
->info
;
2403 runtime
->hw
.formats
= hw
->formats
;
2404 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2405 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2406 runtime
->hw
.periods_min
= hw
->periods_min
;
2407 runtime
->hw
.periods_max
= hw
->periods_max
;
2408 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2409 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2412 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2415 * snd_soc_cnew - create new control
2416 * @_template: control template
2417 * @data: control private data
2418 * @long_name: control long name
2419 * @prefix: control name prefix
2421 * Create a new mixer control from a template control.
2423 * Returns 0 for success, else error.
2425 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2426 void *data
, char *long_name
,
2429 struct snd_kcontrol_new
template;
2430 struct snd_kcontrol
*kcontrol
;
2434 memcpy(&template, _template
, sizeof(template));
2438 long_name
= template.name
;
2441 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2442 name
= kmalloc(name_len
, GFP_ATOMIC
);
2446 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2448 template.name
= name
;
2450 template.name
= long_name
;
2453 kcontrol
= snd_ctl_new1(&template, data
);
2459 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2462 * snd_soc_add_controls - add an array of controls to a codec.
2463 * Convienience function to add a list of controls. Many codecs were
2464 * duplicating this code.
2466 * @codec: codec to add controls to
2467 * @controls: array of controls to add
2468 * @num_controls: number of elements in the array
2470 * Return 0 for success, else error.
2472 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2473 const struct snd_kcontrol_new
*controls
, int num_controls
)
2475 struct snd_card
*card
= codec
->card
->snd_card
;
2478 for (i
= 0; i
< num_controls
; i
++) {
2479 const struct snd_kcontrol_new
*control
= &controls
[i
];
2480 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
2482 codec
->name_prefix
));
2484 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2485 codec
->name
, control
->name
, err
);
2492 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2495 * snd_soc_info_enum_double - enumerated double mixer info callback
2496 * @kcontrol: mixer control
2497 * @uinfo: control element information
2499 * Callback to provide information about a double enumerated
2502 * Returns 0 for success.
2504 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2505 struct snd_ctl_elem_info
*uinfo
)
2507 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2509 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2510 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2511 uinfo
->value
.enumerated
.items
= e
->max
;
2513 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2514 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2515 strcpy(uinfo
->value
.enumerated
.name
,
2516 e
->texts
[uinfo
->value
.enumerated
.item
]);
2519 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2522 * snd_soc_get_enum_double - enumerated double mixer get callback
2523 * @kcontrol: mixer control
2524 * @ucontrol: control element information
2526 * Callback to get the value of a double enumerated mixer.
2528 * Returns 0 for success.
2530 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2531 struct snd_ctl_elem_value
*ucontrol
)
2533 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2534 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2535 unsigned int val
, bitmask
;
2537 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2539 val
= snd_soc_read(codec
, e
->reg
);
2540 ucontrol
->value
.enumerated
.item
[0]
2541 = (val
>> e
->shift_l
) & (bitmask
- 1);
2542 if (e
->shift_l
!= e
->shift_r
)
2543 ucontrol
->value
.enumerated
.item
[1] =
2544 (val
>> e
->shift_r
) & (bitmask
- 1);
2548 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2551 * snd_soc_put_enum_double - enumerated double mixer put callback
2552 * @kcontrol: mixer control
2553 * @ucontrol: control element information
2555 * Callback to set the value of a double enumerated mixer.
2557 * Returns 0 for success.
2559 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2560 struct snd_ctl_elem_value
*ucontrol
)
2562 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2563 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2565 unsigned int mask
, bitmask
;
2567 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2569 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2571 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2572 mask
= (bitmask
- 1) << e
->shift_l
;
2573 if (e
->shift_l
!= e
->shift_r
) {
2574 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2576 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2577 mask
|= (bitmask
- 1) << e
->shift_r
;
2580 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2582 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2585 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2586 * @kcontrol: mixer control
2587 * @ucontrol: control element information
2589 * Callback to get the value of a double semi enumerated mixer.
2591 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2592 * used for handling bitfield coded enumeration for example.
2594 * Returns 0 for success.
2596 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2597 struct snd_ctl_elem_value
*ucontrol
)
2599 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2600 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2601 unsigned int reg_val
, val
, mux
;
2603 reg_val
= snd_soc_read(codec
, e
->reg
);
2604 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2605 for (mux
= 0; mux
< e
->max
; mux
++) {
2606 if (val
== e
->values
[mux
])
2609 ucontrol
->value
.enumerated
.item
[0] = mux
;
2610 if (e
->shift_l
!= e
->shift_r
) {
2611 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2612 for (mux
= 0; mux
< e
->max
; mux
++) {
2613 if (val
== e
->values
[mux
])
2616 ucontrol
->value
.enumerated
.item
[1] = mux
;
2621 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2624 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2625 * @kcontrol: mixer control
2626 * @ucontrol: control element information
2628 * Callback to set the value of a double semi enumerated mixer.
2630 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2631 * used for handling bitfield coded enumeration for example.
2633 * Returns 0 for success.
2635 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2636 struct snd_ctl_elem_value
*ucontrol
)
2638 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2639 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2643 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2645 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2646 mask
= e
->mask
<< e
->shift_l
;
2647 if (e
->shift_l
!= e
->shift_r
) {
2648 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2650 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2651 mask
|= e
->mask
<< e
->shift_r
;
2654 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2656 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2659 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2660 * @kcontrol: mixer control
2661 * @uinfo: control element information
2663 * Callback to provide information about an external enumerated
2666 * Returns 0 for success.
2668 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2669 struct snd_ctl_elem_info
*uinfo
)
2671 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2673 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2675 uinfo
->value
.enumerated
.items
= e
->max
;
2677 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2678 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2679 strcpy(uinfo
->value
.enumerated
.name
,
2680 e
->texts
[uinfo
->value
.enumerated
.item
]);
2683 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2686 * snd_soc_info_volsw_ext - external single mixer info callback
2687 * @kcontrol: mixer control
2688 * @uinfo: control element information
2690 * Callback to provide information about a single external mixer control.
2692 * Returns 0 for success.
2694 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2695 struct snd_ctl_elem_info
*uinfo
)
2697 int max
= kcontrol
->private_value
;
2699 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2700 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2702 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2705 uinfo
->value
.integer
.min
= 0;
2706 uinfo
->value
.integer
.max
= max
;
2709 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2712 * snd_soc_info_volsw - single mixer info callback
2713 * @kcontrol: mixer control
2714 * @uinfo: control element information
2716 * Callback to provide information about a single mixer control.
2718 * Returns 0 for success.
2720 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2721 struct snd_ctl_elem_info
*uinfo
)
2723 struct soc_mixer_control
*mc
=
2724 (struct soc_mixer_control
*)kcontrol
->private_value
;
2726 unsigned int shift
= mc
->shift
;
2727 unsigned int rshift
= mc
->rshift
;
2729 if (!mc
->platform_max
)
2730 mc
->platform_max
= mc
->max
;
2731 platform_max
= mc
->platform_max
;
2733 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2734 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2736 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2738 uinfo
->count
= shift
== rshift
? 1 : 2;
2739 uinfo
->value
.integer
.min
= 0;
2740 uinfo
->value
.integer
.max
= platform_max
;
2743 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2746 * snd_soc_get_volsw - single mixer get callback
2747 * @kcontrol: mixer control
2748 * @ucontrol: control element information
2750 * Callback to get the value of a single mixer control.
2752 * Returns 0 for success.
2754 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2755 struct snd_ctl_elem_value
*ucontrol
)
2757 struct soc_mixer_control
*mc
=
2758 (struct soc_mixer_control
*)kcontrol
->private_value
;
2759 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2760 unsigned int reg
= mc
->reg
;
2761 unsigned int shift
= mc
->shift
;
2762 unsigned int rshift
= mc
->rshift
;
2764 unsigned int mask
= (1 << fls(max
)) - 1;
2765 unsigned int invert
= mc
->invert
;
2767 ucontrol
->value
.integer
.value
[0] =
2768 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2769 if (shift
!= rshift
)
2770 ucontrol
->value
.integer
.value
[1] =
2771 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2773 ucontrol
->value
.integer
.value
[0] =
2774 max
- ucontrol
->value
.integer
.value
[0];
2775 if (shift
!= rshift
)
2776 ucontrol
->value
.integer
.value
[1] =
2777 max
- ucontrol
->value
.integer
.value
[1];
2782 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2785 * snd_soc_put_volsw - single mixer put callback
2786 * @kcontrol: mixer control
2787 * @ucontrol: control element information
2789 * Callback to set the value of a single mixer control.
2791 * Returns 0 for success.
2793 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2794 struct snd_ctl_elem_value
*ucontrol
)
2796 struct soc_mixer_control
*mc
=
2797 (struct soc_mixer_control
*)kcontrol
->private_value
;
2798 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2799 unsigned int reg
= mc
->reg
;
2800 unsigned int shift
= mc
->shift
;
2801 unsigned int rshift
= mc
->rshift
;
2803 unsigned int mask
= (1 << fls(max
)) - 1;
2804 unsigned int invert
= mc
->invert
;
2805 unsigned int val
, val2
, val_mask
;
2807 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2810 val_mask
= mask
<< shift
;
2812 if (shift
!= rshift
) {
2813 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2816 val_mask
|= mask
<< rshift
;
2817 val
|= val2
<< rshift
;
2819 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2821 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2824 * snd_soc_info_volsw_2r - double mixer info callback
2825 * @kcontrol: mixer control
2826 * @uinfo: control element information
2828 * Callback to provide information about a double mixer control that
2829 * spans 2 codec registers.
2831 * Returns 0 for success.
2833 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2834 struct snd_ctl_elem_info
*uinfo
)
2836 struct soc_mixer_control
*mc
=
2837 (struct soc_mixer_control
*)kcontrol
->private_value
;
2840 if (!mc
->platform_max
)
2841 mc
->platform_max
= mc
->max
;
2842 platform_max
= mc
->platform_max
;
2844 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2845 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2847 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2850 uinfo
->value
.integer
.min
= 0;
2851 uinfo
->value
.integer
.max
= platform_max
;
2854 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2857 * snd_soc_get_volsw_2r - double mixer get callback
2858 * @kcontrol: mixer control
2859 * @ucontrol: control element information
2861 * Callback to get the value of a double mixer control that spans 2 registers.
2863 * Returns 0 for success.
2865 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2866 struct snd_ctl_elem_value
*ucontrol
)
2868 struct soc_mixer_control
*mc
=
2869 (struct soc_mixer_control
*)kcontrol
->private_value
;
2870 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2871 unsigned int reg
= mc
->reg
;
2872 unsigned int reg2
= mc
->rreg
;
2873 unsigned int shift
= mc
->shift
;
2875 unsigned int mask
= (1 << fls(max
)) - 1;
2876 unsigned int invert
= mc
->invert
;
2878 ucontrol
->value
.integer
.value
[0] =
2879 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2880 ucontrol
->value
.integer
.value
[1] =
2881 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2883 ucontrol
->value
.integer
.value
[0] =
2884 max
- ucontrol
->value
.integer
.value
[0];
2885 ucontrol
->value
.integer
.value
[1] =
2886 max
- ucontrol
->value
.integer
.value
[1];
2891 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2894 * snd_soc_put_volsw_2r - double mixer set callback
2895 * @kcontrol: mixer control
2896 * @ucontrol: control element information
2898 * Callback to set the value of a double mixer control that spans 2 registers.
2900 * Returns 0 for success.
2902 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2903 struct snd_ctl_elem_value
*ucontrol
)
2905 struct soc_mixer_control
*mc
=
2906 (struct soc_mixer_control
*)kcontrol
->private_value
;
2907 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2908 unsigned int reg
= mc
->reg
;
2909 unsigned int reg2
= mc
->rreg
;
2910 unsigned int shift
= mc
->shift
;
2912 unsigned int mask
= (1 << fls(max
)) - 1;
2913 unsigned int invert
= mc
->invert
;
2915 unsigned int val
, val2
, val_mask
;
2917 val_mask
= mask
<< shift
;
2918 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2919 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2927 val2
= val2
<< shift
;
2929 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2933 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2936 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2939 * snd_soc_info_volsw_s8 - signed mixer info callback
2940 * @kcontrol: mixer control
2941 * @uinfo: control element information
2943 * Callback to provide information about a signed mixer control.
2945 * Returns 0 for success.
2947 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2948 struct snd_ctl_elem_info
*uinfo
)
2950 struct soc_mixer_control
*mc
=
2951 (struct soc_mixer_control
*)kcontrol
->private_value
;
2955 if (!mc
->platform_max
)
2956 mc
->platform_max
= mc
->max
;
2957 platform_max
= mc
->platform_max
;
2959 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2961 uinfo
->value
.integer
.min
= 0;
2962 uinfo
->value
.integer
.max
= platform_max
- min
;
2965 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2968 * snd_soc_get_volsw_s8 - signed mixer get callback
2969 * @kcontrol: mixer control
2970 * @ucontrol: control element information
2972 * Callback to get the value of a signed mixer control.
2974 * Returns 0 for success.
2976 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2977 struct snd_ctl_elem_value
*ucontrol
)
2979 struct soc_mixer_control
*mc
=
2980 (struct soc_mixer_control
*)kcontrol
->private_value
;
2981 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2982 unsigned int reg
= mc
->reg
;
2984 int val
= snd_soc_read(codec
, reg
);
2986 ucontrol
->value
.integer
.value
[0] =
2987 ((signed char)(val
& 0xff))-min
;
2988 ucontrol
->value
.integer
.value
[1] =
2989 ((signed char)((val
>> 8) & 0xff))-min
;
2992 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2995 * snd_soc_put_volsw_sgn - signed mixer put callback
2996 * @kcontrol: mixer control
2997 * @ucontrol: control element information
2999 * Callback to set the value of a signed mixer control.
3001 * Returns 0 for success.
3003 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
3004 struct snd_ctl_elem_value
*ucontrol
)
3006 struct soc_mixer_control
*mc
=
3007 (struct soc_mixer_control
*)kcontrol
->private_value
;
3008 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3009 unsigned int reg
= mc
->reg
;
3013 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
3014 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
3016 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
3018 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
3021 * snd_soc_limit_volume - Set new limit to an existing volume control.
3023 * @codec: where to look for the control
3024 * @name: Name of the control
3025 * @max: new maximum limit
3027 * Return 0 for success, else error.
3029 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3030 const char *name
, int max
)
3032 struct snd_card
*card
= codec
->card
->snd_card
;
3033 struct snd_kcontrol
*kctl
;
3034 struct soc_mixer_control
*mc
;
3038 /* Sanity check for name and max */
3039 if (unlikely(!name
|| max
<= 0))
3042 list_for_each_entry(kctl
, &card
->controls
, list
) {
3043 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3049 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3050 if (max
<= mc
->max
) {
3051 mc
->platform_max
= max
;
3057 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3060 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
3061 * mixer info callback
3062 * @kcontrol: mixer control
3063 * @uinfo: control element information
3065 * Returns 0 for success.
3067 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3068 struct snd_ctl_elem_info
*uinfo
)
3070 struct soc_mixer_control
*mc
=
3071 (struct soc_mixer_control
*)kcontrol
->private_value
;
3075 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3077 uinfo
->value
.integer
.min
= 0;
3078 uinfo
->value
.integer
.max
= max
-min
;
3082 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
3085 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
3086 * mixer get callback
3087 * @kcontrol: mixer control
3088 * @uinfo: control element information
3090 * Returns 0 for success.
3092 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3093 struct snd_ctl_elem_value
*ucontrol
)
3095 struct soc_mixer_control
*mc
=
3096 (struct soc_mixer_control
*)kcontrol
->private_value
;
3097 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3098 unsigned int mask
= (1<<mc
->shift
)-1;
3100 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
3101 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3103 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
3104 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
3107 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
3110 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
3111 * mixer put callback
3112 * @kcontrol: mixer control
3113 * @uinfo: control element information
3115 * Returns 0 for success.
3117 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
3118 struct snd_ctl_elem_value
*ucontrol
)
3120 struct soc_mixer_control
*mc
=
3121 (struct soc_mixer_control
*)kcontrol
->private_value
;
3122 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3123 unsigned int mask
= (1<<mc
->shift
)-1;
3126 unsigned int val
, valr
, oval
, ovalr
;
3128 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
3130 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
3133 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
3134 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
3138 ret
= snd_soc_write(codec
, mc
->reg
, val
);
3142 if (ovalr
!= valr
) {
3143 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
3150 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
3153 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3155 * @clk_id: DAI specific clock ID
3156 * @freq: new clock frequency in Hz
3157 * @dir: new clock direction - input/output.
3159 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3161 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3162 unsigned int freq
, int dir
)
3164 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3165 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3166 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3167 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
,
3172 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3175 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3177 * @clk_id: DAI specific clock ID
3178 * @freq: new clock frequency in Hz
3179 * @dir: new clock direction - input/output.
3181 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3183 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3184 unsigned int freq
, int dir
)
3186 if (codec
->driver
->set_sysclk
)
3187 return codec
->driver
->set_sysclk(codec
, clk_id
, freq
, dir
);
3191 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3194 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3196 * @div_id: DAI specific clock divider ID
3197 * @div: new clock divisor.
3199 * Configures the clock dividers. This is used to derive the best DAI bit and
3200 * frame clocks from the system or master clock. It's best to set the DAI bit
3201 * and frame clocks as low as possible to save system power.
3203 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3204 int div_id
, int div
)
3206 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3207 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3211 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3214 * snd_soc_dai_set_pll - configure DAI PLL.
3216 * @pll_id: DAI specific PLL ID
3217 * @source: DAI specific source for the PLL
3218 * @freq_in: PLL input clock frequency in Hz
3219 * @freq_out: requested PLL output clock frequency in Hz
3221 * Configures and enables PLL to generate output clock based on input clock.
3223 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3224 unsigned int freq_in
, unsigned int freq_out
)
3226 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3227 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3229 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3230 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3235 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3238 * snd_soc_codec_set_pll - configure codec PLL.
3240 * @pll_id: DAI specific PLL ID
3241 * @source: DAI specific source for the PLL
3242 * @freq_in: PLL input clock frequency in Hz
3243 * @freq_out: requested PLL output clock frequency in Hz
3245 * Configures and enables PLL to generate output clock based on input clock.
3247 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3248 unsigned int freq_in
, unsigned int freq_out
)
3250 if (codec
->driver
->set_pll
)
3251 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3256 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3259 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3261 * @fmt: SND_SOC_DAIFMT_ format value.
3263 * Configures the DAI hardware format and clocking.
3265 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3267 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
3268 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3272 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3275 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3277 * @tx_mask: bitmask representing active TX slots.
3278 * @rx_mask: bitmask representing active RX slots.
3279 * @slots: Number of slots in use.
3280 * @slot_width: Width in bits for each slot.
3282 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3285 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3286 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3288 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3289 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3294 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3297 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3299 * @tx_num: how many TX channels
3300 * @tx_slot: pointer to an array which imply the TX slot number channel
3302 * @rx_num: how many RX channels
3303 * @rx_slot: pointer to an array which imply the RX slot number channel
3306 * configure the relationship between channel number and TDM slot number.
3308 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3309 unsigned int tx_num
, unsigned int *tx_slot
,
3310 unsigned int rx_num
, unsigned int *rx_slot
)
3312 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3313 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3318 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3321 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3323 * @tristate: tristate enable
3325 * Tristates the DAI so that others can use it.
3327 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3329 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3330 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3334 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3337 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3339 * @mute: mute enable
3341 * Mutes the DAI DAC.
3343 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3345 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3346 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3350 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3353 * snd_soc_register_card - Register a card with the ASoC core
3355 * @card: Card to register
3358 int snd_soc_register_card(struct snd_soc_card
*card
)
3362 if (!card
->name
|| !card
->dev
)
3365 dev_set_drvdata(card
->dev
, card
);
3367 snd_soc_initialize_card_lists(card
);
3369 soc_init_card_debugfs(card
);
3371 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
3372 (card
->num_links
+ card
->num_aux_devs
),
3374 if (card
->rtd
== NULL
)
3376 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3378 for (i
= 0; i
< card
->num_links
; i
++)
3379 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3381 INIT_LIST_HEAD(&card
->list
);
3382 card
->instantiated
= 0;
3383 mutex_init(&card
->mutex
);
3385 mutex_lock(&client_mutex
);
3386 list_add(&card
->list
, &card_list
);
3387 snd_soc_instantiate_cards();
3388 mutex_unlock(&client_mutex
);
3390 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
3394 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3397 * snd_soc_unregister_card - Unregister a card with the ASoC core
3399 * @card: Card to unregister
3402 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3404 if (card
->instantiated
)
3405 soc_cleanup_card_resources(card
);
3406 mutex_lock(&client_mutex
);
3407 list_del(&card
->list
);
3408 mutex_unlock(&client_mutex
);
3409 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3413 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3416 * Simplify DAI link configuration by removing ".-1" from device names
3417 * and sanitizing names.
3419 static char *fmt_single_name(struct device
*dev
, int *id
)
3421 char *found
, name
[NAME_SIZE
];
3424 if (dev_name(dev
) == NULL
)
3427 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3429 /* are we a "%s.%d" name (platform and SPI components) */
3430 found
= strstr(name
, dev
->driver
->name
);
3433 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3435 /* discard ID from name if ID == -1 */
3437 found
[strlen(dev
->driver
->name
)] = '\0';
3441 /* I2C component devices are named "bus-addr" */
3442 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3443 char tmp
[NAME_SIZE
];
3445 /* create unique ID number from I2C addr and bus */
3446 *id
= ((id1
& 0xffff) << 16) + id2
;
3448 /* sanitize component name for DAI link creation */
3449 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3450 strlcpy(name
, tmp
, NAME_SIZE
);
3455 return kstrdup(name
, GFP_KERNEL
);
3459 * Simplify DAI link naming for single devices with multiple DAIs by removing
3460 * any ".-1" and using the DAI name (instead of device name).
3462 static inline char *fmt_multiple_name(struct device
*dev
,
3463 struct snd_soc_dai_driver
*dai_drv
)
3465 if (dai_drv
->name
== NULL
) {
3466 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
3471 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3475 * snd_soc_register_dai - Register a DAI with the ASoC core
3477 * @dai: DAI to register
3479 int snd_soc_register_dai(struct device
*dev
,
3480 struct snd_soc_dai_driver
*dai_drv
)
3482 struct snd_soc_dai
*dai
;
3484 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3486 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3490 /* create DAI component name */
3491 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3492 if (dai
->name
== NULL
) {
3498 dai
->driver
= dai_drv
;
3499 if (!dai
->driver
->ops
)
3500 dai
->driver
->ops
= &null_dai_ops
;
3502 mutex_lock(&client_mutex
);
3503 list_add(&dai
->list
, &dai_list
);
3504 snd_soc_instantiate_cards();
3505 mutex_unlock(&client_mutex
);
3507 pr_debug("Registered DAI '%s'\n", dai
->name
);
3511 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3514 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3516 * @dai: DAI to unregister
3518 void snd_soc_unregister_dai(struct device
*dev
)
3520 struct snd_soc_dai
*dai
;
3522 list_for_each_entry(dai
, &dai_list
, list
) {
3523 if (dev
== dai
->dev
)
3529 mutex_lock(&client_mutex
);
3530 list_del(&dai
->list
);
3531 mutex_unlock(&client_mutex
);
3533 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3537 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3540 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3542 * @dai: Array of DAIs to register
3543 * @count: Number of DAIs
3545 int snd_soc_register_dais(struct device
*dev
,
3546 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3548 struct snd_soc_dai
*dai
;
3551 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3553 for (i
= 0; i
< count
; i
++) {
3555 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3561 /* create DAI component name */
3562 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3563 if (dai
->name
== NULL
) {
3570 dai
->driver
= &dai_drv
[i
];
3571 if (dai
->driver
->id
)
3572 dai
->id
= dai
->driver
->id
;
3575 if (!dai
->driver
->ops
)
3576 dai
->driver
->ops
= &null_dai_ops
;
3578 mutex_lock(&client_mutex
);
3579 list_add(&dai
->list
, &dai_list
);
3580 mutex_unlock(&client_mutex
);
3582 pr_debug("Registered DAI '%s'\n", dai
->name
);
3585 mutex_lock(&client_mutex
);
3586 snd_soc_instantiate_cards();
3587 mutex_unlock(&client_mutex
);
3591 for (i
--; i
>= 0; i
--)
3592 snd_soc_unregister_dai(dev
);
3596 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3599 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3601 * @dai: Array of DAIs to unregister
3602 * @count: Number of DAIs
3604 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3608 for (i
= 0; i
< count
; i
++)
3609 snd_soc_unregister_dai(dev
);
3611 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3614 * snd_soc_register_platform - Register a platform with the ASoC core
3616 * @platform: platform to register
3618 int snd_soc_register_platform(struct device
*dev
,
3619 struct snd_soc_platform_driver
*platform_drv
)
3621 struct snd_soc_platform
*platform
;
3623 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3625 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3626 if (platform
== NULL
)
3629 /* create platform component name */
3630 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3631 if (platform
->name
== NULL
) {
3636 platform
->dev
= dev
;
3637 platform
->driver
= platform_drv
;
3639 mutex_lock(&client_mutex
);
3640 list_add(&platform
->list
, &platform_list
);
3641 snd_soc_instantiate_cards();
3642 mutex_unlock(&client_mutex
);
3644 pr_debug("Registered platform '%s'\n", platform
->name
);
3648 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3651 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3653 * @platform: platform to unregister
3655 void snd_soc_unregister_platform(struct device
*dev
)
3657 struct snd_soc_platform
*platform
;
3659 list_for_each_entry(platform
, &platform_list
, list
) {
3660 if (dev
== platform
->dev
)
3666 mutex_lock(&client_mutex
);
3667 list_del(&platform
->list
);
3668 mutex_unlock(&client_mutex
);
3670 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3671 kfree(platform
->name
);
3674 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3676 static u64 codec_format_map
[] = {
3677 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3678 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3679 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3680 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3681 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3682 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3683 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3684 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3685 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3686 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3687 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3688 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3689 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3690 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3691 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3692 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3695 /* Fix up the DAI formats for endianness: codecs don't actually see
3696 * the endianness of the data but we're using the CPU format
3697 * definitions which do need to include endianness so we ensure that
3698 * codec DAIs always have both big and little endian variants set.
3700 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3704 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3705 if (stream
->formats
& codec_format_map
[i
])
3706 stream
->formats
|= codec_format_map
[i
];
3710 * snd_soc_register_codec - Register a codec with the ASoC core
3712 * @codec: codec to register
3714 int snd_soc_register_codec(struct device
*dev
,
3715 const struct snd_soc_codec_driver
*codec_drv
,
3716 struct snd_soc_dai_driver
*dai_drv
,
3720 struct snd_soc_codec
*codec
;
3723 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3725 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3729 /* create CODEC component name */
3730 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3731 if (codec
->name
== NULL
) {
3736 if (codec_drv
->compress_type
)
3737 codec
->compress_type
= codec_drv
->compress_type
;
3739 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3741 codec
->write
= codec_drv
->write
;
3742 codec
->read
= codec_drv
->read
;
3743 codec
->volatile_register
= codec_drv
->volatile_register
;
3744 codec
->readable_register
= codec_drv
->readable_register
;
3745 codec
->writable_register
= codec_drv
->writable_register
;
3746 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3747 codec
->dapm
.dev
= dev
;
3748 codec
->dapm
.codec
= codec
;
3749 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3751 codec
->driver
= codec_drv
;
3752 codec
->num_dai
= num_dai
;
3753 mutex_init(&codec
->mutex
);
3755 /* allocate CODEC register cache */
3756 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3757 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3758 codec
->reg_size
= reg_size
;
3759 /* it is necessary to make a copy of the default register cache
3760 * because in the case of using a compression type that requires
3761 * the default register cache to be marked as __devinitconst the
3762 * kernel might have freed the array by the time we initialize
3765 if (codec_drv
->reg_cache_default
) {
3766 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3767 reg_size
, GFP_KERNEL
);
3768 if (!codec
->reg_def_copy
) {
3775 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3776 if (!codec
->volatile_register
)
3777 codec
->volatile_register
= snd_soc_default_volatile_register
;
3778 if (!codec
->readable_register
)
3779 codec
->readable_register
= snd_soc_default_readable_register
;
3780 if (!codec
->writable_register
)
3781 codec
->writable_register
= snd_soc_default_writable_register
;
3784 for (i
= 0; i
< num_dai
; i
++) {
3785 fixup_codec_formats(&dai_drv
[i
].playback
);
3786 fixup_codec_formats(&dai_drv
[i
].capture
);
3789 /* register any DAIs */
3791 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3796 mutex_lock(&client_mutex
);
3797 list_add(&codec
->list
, &codec_list
);
3798 snd_soc_instantiate_cards();
3799 mutex_unlock(&client_mutex
);
3801 pr_debug("Registered codec '%s'\n", codec
->name
);
3805 kfree(codec
->reg_def_copy
);
3806 codec
->reg_def_copy
= NULL
;
3811 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3814 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3816 * @codec: codec to unregister
3818 void snd_soc_unregister_codec(struct device
*dev
)
3820 struct snd_soc_codec
*codec
;
3823 list_for_each_entry(codec
, &codec_list
, list
) {
3824 if (dev
== codec
->dev
)
3831 for (i
= 0; i
< codec
->num_dai
; i
++)
3832 snd_soc_unregister_dai(dev
);
3834 mutex_lock(&client_mutex
);
3835 list_del(&codec
->list
);
3836 mutex_unlock(&client_mutex
);
3838 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3840 snd_soc_cache_exit(codec
);
3841 kfree(codec
->reg_def_copy
);
3845 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3847 static int __init
snd_soc_init(void)
3849 #ifdef CONFIG_DEBUG_FS
3850 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3851 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3853 "ASoC: Failed to create debugfs directory\n");
3854 snd_soc_debugfs_root
= NULL
;
3857 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3859 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3861 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3863 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3865 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3866 &platform_list_fops
))
3867 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3870 snd_soc_util_init();
3872 return platform_driver_register(&soc_driver
);
3874 module_init(snd_soc_init
);
3876 static void __exit
snd_soc_exit(void)
3878 snd_soc_util_exit();
3880 #ifdef CONFIG_DEBUG_FS
3881 debugfs_remove_recursive(snd_soc_debugfs_root
);
3883 platform_driver_unregister(&soc_driver
);
3885 module_exit(snd_soc_exit
);
3887 /* Module information */
3888 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3889 MODULE_DESCRIPTION("ALSA SoC Core");
3890 MODULE_LICENSE("GPL");
3891 MODULE_ALIAS("platform:soc-audio");