2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/slab.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/soc-dapm.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 static struct dentry
*debugfs_root
;
54 static DEFINE_MUTEX(client_mutex
);
55 static LIST_HEAD(card_list
);
56 static LIST_HEAD(dai_list
);
57 static LIST_HEAD(platform_list
);
58 static LIST_HEAD(codec_list
);
60 static int snd_soc_register_card(struct snd_soc_card
*card
);
61 static int snd_soc_unregister_card(struct snd_soc_card
*card
);
62 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
);
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
69 static int pmdown_time
= 5000;
70 module_param(pmdown_time
, int, 0);
71 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
74 * This function forces any delayed work to be queued and run.
76 static int run_delayed_work(struct delayed_work
*dwork
)
80 /* cancel any work waiting to be queued. */
81 ret
= cancel_delayed_work(dwork
);
83 /* if there was any work waiting then we run it now and
84 * wait for it's completion */
86 schedule_delayed_work(dwork
, 0);
87 flush_scheduled_work();
92 /* codec register dump */
93 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
)
95 int ret
, i
, step
= 1, count
= 0;
97 if (!codec
->driver
->reg_cache_size
)
100 if (codec
->driver
->reg_cache_step
)
101 step
= codec
->driver
->reg_cache_step
;
103 count
+= sprintf(buf
, "%s registers\n", codec
->name
);
104 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
105 if (codec
->driver
->readable_register
&& !codec
->driver
->readable_register(i
))
108 count
+= sprintf(buf
+ count
, "%2x: ", i
);
109 if (count
>= PAGE_SIZE
- 1)
112 if (codec
->driver
->display_register
) {
113 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
114 PAGE_SIZE
- count
, i
);
116 /* If the read fails it's almost certainly due to
117 * the register being volatile and the device being
120 ret
= codec
->driver
->read(codec
, i
);
122 count
+= snprintf(buf
+ count
,
126 count
+= snprintf(buf
+ count
,
128 "<no data: %d>", ret
);
131 if (count
>= PAGE_SIZE
- 1)
134 count
+= snprintf(buf
+ count
, PAGE_SIZE
- count
, "\n");
135 if (count
>= PAGE_SIZE
- 1)
139 /* Truncate count; min() would cause a warning */
140 if (count
>= PAGE_SIZE
)
141 count
= PAGE_SIZE
- 1;
145 static ssize_t
codec_reg_show(struct device
*dev
,
146 struct device_attribute
*attr
, char *buf
)
148 struct snd_soc_pcm_runtime
*rtd
=
149 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
151 return soc_codec_reg_show(rtd
->codec
, buf
);
154 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
156 static ssize_t
pmdown_time_show(struct device
*dev
,
157 struct device_attribute
*attr
, char *buf
)
159 struct snd_soc_pcm_runtime
*rtd
=
160 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
162 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
165 static ssize_t
pmdown_time_set(struct device
*dev
,
166 struct device_attribute
*attr
,
167 const char *buf
, size_t count
)
169 struct snd_soc_pcm_runtime
*rtd
=
170 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
173 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
180 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
182 #ifdef CONFIG_DEBUG_FS
183 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
185 file
->private_data
= inode
->i_private
;
189 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
190 size_t count
, loff_t
*ppos
)
193 struct snd_soc_codec
*codec
= file
->private_data
;
194 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
197 ret
= soc_codec_reg_show(codec
, buf
);
199 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
204 static ssize_t
codec_reg_write_file(struct file
*file
,
205 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
210 unsigned long reg
, value
;
212 struct snd_soc_codec
*codec
= file
->private_data
;
214 buf_size
= min(count
, (sizeof(buf
)-1));
215 if (copy_from_user(buf
, user_buf
, buf_size
))
219 if (codec
->driver
->reg_cache_step
)
220 step
= codec
->driver
->reg_cache_step
;
222 while (*start
== ' ')
224 reg
= simple_strtoul(start
, &start
, 16);
225 if ((reg
>= codec
->driver
->reg_cache_size
) || (reg
% step
))
227 while (*start
== ' ')
229 if (strict_strtoul(start
, 16, &value
))
231 codec
->driver
->write(codec
, reg
, value
);
235 static const struct file_operations codec_reg_fops
= {
236 .open
= codec_reg_open_file
,
237 .read
= codec_reg_read_file
,
238 .write
= codec_reg_write_file
,
239 .llseek
= default_llseek
,
242 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
244 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
246 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
248 if (!codec
->debugfs_codec_root
) {
250 "ASoC: Failed to create codec debugfs directory\n");
254 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
255 codec
->debugfs_codec_root
,
256 codec
, &codec_reg_fops
);
257 if (!codec
->debugfs_reg
)
259 "ASoC: Failed to create codec register debugfs file\n");
261 codec
->dapm
.debugfs_dapm
= debugfs_create_dir("dapm",
262 codec
->debugfs_codec_root
);
263 if (!codec
->dapm
.debugfs_dapm
)
265 "Failed to create DAPM debugfs directory\n");
267 snd_soc_dapm_debugfs_init(&codec
->dapm
);
270 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
272 debugfs_remove_recursive(codec
->debugfs_codec_root
);
275 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
276 size_t count
, loff_t
*ppos
)
278 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
279 ssize_t len
, ret
= 0;
280 struct snd_soc_codec
*codec
;
285 list_for_each_entry(codec
, &codec_list
, list
) {
286 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
290 if (ret
> PAGE_SIZE
) {
297 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
304 static const struct file_operations codec_list_fops
= {
305 .read
= codec_list_read_file
,
306 .llseek
= default_llseek
,/* read accesses f_pos */
309 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
310 size_t count
, loff_t
*ppos
)
312 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
313 ssize_t len
, ret
= 0;
314 struct snd_soc_dai
*dai
;
319 list_for_each_entry(dai
, &dai_list
, list
) {
320 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
323 if (ret
> PAGE_SIZE
) {
329 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
336 static const struct file_operations dai_list_fops
= {
337 .read
= dai_list_read_file
,
338 .llseek
= default_llseek
,/* read accesses f_pos */
341 static ssize_t
platform_list_read_file(struct file
*file
,
342 char __user
*user_buf
,
343 size_t count
, loff_t
*ppos
)
345 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
346 ssize_t len
, ret
= 0;
347 struct snd_soc_platform
*platform
;
352 list_for_each_entry(platform
, &platform_list
, list
) {
353 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
357 if (ret
> PAGE_SIZE
) {
363 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
370 static const struct file_operations platform_list_fops
= {
371 .read
= platform_list_read_file
,
372 .llseek
= default_llseek
,/* read accesses f_pos */
375 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
377 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
379 if (!card
->debugfs_card_root
) {
381 "ASoC: Failed to create codec debugfs directory\n");
385 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
386 card
->debugfs_card_root
,
388 if (!card
->debugfs_pop_time
)
390 "Failed to create pop time debugfs file\n");
393 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
395 debugfs_remove_recursive(card
->debugfs_card_root
);
400 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
404 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
408 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
412 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
417 #ifdef CONFIG_SND_SOC_AC97_BUS
418 /* unregister ac97 codec */
419 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
421 if (codec
->ac97
->dev
.bus
)
422 device_unregister(&codec
->ac97
->dev
);
426 /* stop no dev release warning */
427 static void soc_ac97_device_release(struct device
*dev
){}
429 /* register ac97 codec to bus */
430 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
434 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
435 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
436 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
438 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
439 codec
->card
->snd_card
->number
, 0, codec
->name
);
440 err
= device_register(&codec
->ac97
->dev
);
442 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
443 codec
->ac97
->dev
.bus
= NULL
;
450 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
452 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
453 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
454 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
457 if (codec_dai
->driver
->symmetric_rates
|| cpu_dai
->driver
->symmetric_rates
||
458 rtd
->dai_link
->symmetric_rates
) {
459 dev_dbg(&rtd
->dev
, "Symmetry forces %dHz rate\n",
462 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
463 SNDRV_PCM_HW_PARAM_RATE
,
468 "Unable to apply rate symmetry constraint: %d\n", ret
);
477 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
478 * then initialized and any private data can be allocated. This also calls
479 * startup for the cpu DAI, platform, machine and codec DAI.
481 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
483 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
484 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
485 struct snd_soc_platform
*platform
= rtd
->platform
;
486 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
487 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
488 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
489 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
492 mutex_lock(&pcm_mutex
);
494 /* startup the audio subsystem */
495 if (cpu_dai
->driver
->ops
->startup
) {
496 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
498 printk(KERN_ERR
"asoc: can't open interface %s\n",
504 if (platform
->driver
->ops
->open
) {
505 ret
= platform
->driver
->ops
->open(substream
);
507 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
512 if (codec_dai
->driver
->ops
->startup
) {
513 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
515 printk(KERN_ERR
"asoc: can't open codec %s\n",
521 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
522 ret
= rtd
->dai_link
->ops
->startup(substream
);
524 printk(KERN_ERR
"asoc: %s startup failed\n", rtd
->dai_link
->name
);
529 /* Check that the codec and cpu DAI's are compatible */
530 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
531 runtime
->hw
.rate_min
=
532 max(codec_dai_drv
->playback
.rate_min
,
533 cpu_dai_drv
->playback
.rate_min
);
534 runtime
->hw
.rate_max
=
535 min(codec_dai_drv
->playback
.rate_max
,
536 cpu_dai_drv
->playback
.rate_max
);
537 runtime
->hw
.channels_min
=
538 max(codec_dai_drv
->playback
.channels_min
,
539 cpu_dai_drv
->playback
.channels_min
);
540 runtime
->hw
.channels_max
=
541 min(codec_dai_drv
->playback
.channels_max
,
542 cpu_dai_drv
->playback
.channels_max
);
543 runtime
->hw
.formats
=
544 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
546 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
547 if (codec_dai_drv
->playback
.rates
548 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
549 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
550 if (cpu_dai_drv
->playback
.rates
551 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
552 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
554 runtime
->hw
.rate_min
=
555 max(codec_dai_drv
->capture
.rate_min
,
556 cpu_dai_drv
->capture
.rate_min
);
557 runtime
->hw
.rate_max
=
558 min(codec_dai_drv
->capture
.rate_max
,
559 cpu_dai_drv
->capture
.rate_max
);
560 runtime
->hw
.channels_min
=
561 max(codec_dai_drv
->capture
.channels_min
,
562 cpu_dai_drv
->capture
.channels_min
);
563 runtime
->hw
.channels_max
=
564 min(codec_dai_drv
->capture
.channels_max
,
565 cpu_dai_drv
->capture
.channels_max
);
566 runtime
->hw
.formats
=
567 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
569 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
570 if (codec_dai_drv
->capture
.rates
571 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
572 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
573 if (cpu_dai_drv
->capture
.rates
574 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
575 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
578 snd_pcm_limit_hw_rates(runtime
);
579 if (!runtime
->hw
.rates
) {
580 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
581 codec_dai
->name
, cpu_dai
->name
);
584 if (!runtime
->hw
.formats
) {
585 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
586 codec_dai
->name
, cpu_dai
->name
);
589 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
) {
590 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
591 codec_dai
->name
, cpu_dai
->name
);
595 /* Symmetry only applies if we've already got an active stream. */
596 if (cpu_dai
->active
|| codec_dai
->active
) {
597 ret
= soc_pcm_apply_symmetry(substream
);
602 pr_debug("asoc: %s <-> %s info:\n",
603 codec_dai
->name
, cpu_dai
->name
);
604 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
605 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
606 runtime
->hw
.channels_max
);
607 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
608 runtime
->hw
.rate_max
);
610 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
611 cpu_dai
->playback_active
++;
612 codec_dai
->playback_active
++;
614 cpu_dai
->capture_active
++;
615 codec_dai
->capture_active
++;
619 rtd
->codec
->active
++;
620 mutex_unlock(&pcm_mutex
);
624 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
625 rtd
->dai_link
->ops
->shutdown(substream
);
628 if (codec_dai
->driver
->ops
->shutdown
)
629 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
632 if (platform
->driver
->ops
->close
)
633 platform
->driver
->ops
->close(substream
);
636 if (cpu_dai
->driver
->ops
->shutdown
)
637 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
639 mutex_unlock(&pcm_mutex
);
644 * Power down the audio subsystem pmdown_time msecs after close is called.
645 * This is to ensure there are no pops or clicks in between any music tracks
646 * due to DAPM power cycling.
648 static void close_delayed_work(struct work_struct
*work
)
650 struct snd_soc_pcm_runtime
*rtd
=
651 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
652 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
654 mutex_lock(&pcm_mutex
);
656 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
657 codec_dai
->driver
->playback
.stream_name
,
658 codec_dai
->playback_active
? "active" : "inactive",
659 codec_dai
->pop_wait
? "yes" : "no");
661 /* are we waiting on this codec DAI stream */
662 if (codec_dai
->pop_wait
== 1) {
663 codec_dai
->pop_wait
= 0;
664 snd_soc_dapm_stream_event(rtd
,
665 codec_dai
->driver
->playback
.stream_name
,
666 SND_SOC_DAPM_STREAM_STOP
);
669 mutex_unlock(&pcm_mutex
);
673 * Called by ALSA when a PCM substream is closed. Private data can be
674 * freed here. The cpu DAI, codec DAI, machine and platform are also
677 static int soc_codec_close(struct snd_pcm_substream
*substream
)
679 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
680 struct snd_soc_platform
*platform
= rtd
->platform
;
681 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
682 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
683 struct snd_soc_codec
*codec
= rtd
->codec
;
685 mutex_lock(&pcm_mutex
);
687 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
688 cpu_dai
->playback_active
--;
689 codec_dai
->playback_active
--;
691 cpu_dai
->capture_active
--;
692 codec_dai
->capture_active
--;
699 /* Muting the DAC suppresses artifacts caused during digital
700 * shutdown, for example from stopping clocks.
702 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
703 snd_soc_dai_digital_mute(codec_dai
, 1);
705 if (cpu_dai
->driver
->ops
->shutdown
)
706 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
708 if (codec_dai
->driver
->ops
->shutdown
)
709 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
711 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
712 rtd
->dai_link
->ops
->shutdown(substream
);
714 if (platform
->driver
->ops
->close
)
715 platform
->driver
->ops
->close(substream
);
716 cpu_dai
->runtime
= NULL
;
718 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
719 /* start delayed pop wq here for playback streams */
720 codec_dai
->pop_wait
= 1;
721 schedule_delayed_work(&rtd
->delayed_work
,
722 msecs_to_jiffies(rtd
->pmdown_time
));
724 /* capture streams can be powered down now */
725 snd_soc_dapm_stream_event(rtd
,
726 codec_dai
->driver
->capture
.stream_name
,
727 SND_SOC_DAPM_STREAM_STOP
);
730 mutex_unlock(&pcm_mutex
);
735 * Called by ALSA when the PCM substream is prepared, can set format, sample
736 * rate, etc. This function is non atomic and can be called multiple times,
737 * it can refer to the runtime info.
739 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
741 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
742 struct snd_soc_platform
*platform
= rtd
->platform
;
743 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
744 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
747 mutex_lock(&pcm_mutex
);
749 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
750 ret
= rtd
->dai_link
->ops
->prepare(substream
);
752 printk(KERN_ERR
"asoc: machine prepare error\n");
757 if (platform
->driver
->ops
->prepare
) {
758 ret
= platform
->driver
->ops
->prepare(substream
);
760 printk(KERN_ERR
"asoc: platform prepare error\n");
765 if (codec_dai
->driver
->ops
->prepare
) {
766 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
768 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
773 if (cpu_dai
->driver
->ops
->prepare
) {
774 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
776 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
781 /* cancel any delayed stream shutdown that is pending */
782 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
783 codec_dai
->pop_wait
) {
784 codec_dai
->pop_wait
= 0;
785 cancel_delayed_work(&rtd
->delayed_work
);
788 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
789 snd_soc_dapm_stream_event(rtd
,
790 codec_dai
->driver
->playback
.stream_name
,
791 SND_SOC_DAPM_STREAM_START
);
793 snd_soc_dapm_stream_event(rtd
,
794 codec_dai
->driver
->capture
.stream_name
,
795 SND_SOC_DAPM_STREAM_START
);
797 snd_soc_dai_digital_mute(codec_dai
, 0);
800 mutex_unlock(&pcm_mutex
);
805 * Called by ALSA when the hardware params are set by application. This
806 * function can also be called multiple times and can allocate buffers
807 * (using snd_pcm_lib_* ). It's non-atomic.
809 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
810 struct snd_pcm_hw_params
*params
)
812 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
813 struct snd_soc_platform
*platform
= rtd
->platform
;
814 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
815 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
818 mutex_lock(&pcm_mutex
);
820 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
821 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
823 printk(KERN_ERR
"asoc: machine hw_params failed\n");
828 if (codec_dai
->driver
->ops
->hw_params
) {
829 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
831 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
837 if (cpu_dai
->driver
->ops
->hw_params
) {
838 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
840 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
846 if (platform
->driver
->ops
->hw_params
) {
847 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
849 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
855 rtd
->rate
= params_rate(params
);
858 mutex_unlock(&pcm_mutex
);
862 if (cpu_dai
->driver
->ops
->hw_free
)
863 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
866 if (codec_dai
->driver
->ops
->hw_free
)
867 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
870 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
871 rtd
->dai_link
->ops
->hw_free(substream
);
873 mutex_unlock(&pcm_mutex
);
878 * Free's resources allocated by hw_params, can be called multiple times
880 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
882 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
883 struct snd_soc_platform
*platform
= rtd
->platform
;
884 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
885 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
886 struct snd_soc_codec
*codec
= rtd
->codec
;
888 mutex_lock(&pcm_mutex
);
890 /* apply codec digital mute */
892 snd_soc_dai_digital_mute(codec_dai
, 1);
894 /* free any machine hw params */
895 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
896 rtd
->dai_link
->ops
->hw_free(substream
);
898 /* free any DMA resources */
899 if (platform
->driver
->ops
->hw_free
)
900 platform
->driver
->ops
->hw_free(substream
);
902 /* now free hw params for the DAI's */
903 if (codec_dai
->driver
->ops
->hw_free
)
904 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
906 if (cpu_dai
->driver
->ops
->hw_free
)
907 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
909 mutex_unlock(&pcm_mutex
);
913 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
915 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
916 struct snd_soc_platform
*platform
= rtd
->platform
;
917 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
918 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
921 if (codec_dai
->driver
->ops
->trigger
) {
922 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
927 if (platform
->driver
->ops
->trigger
) {
928 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
933 if (cpu_dai
->driver
->ops
->trigger
) {
934 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
942 * soc level wrapper for pointer callback
943 * If cpu_dai, codec_dai, platform driver has the delay callback, than
944 * the runtime->delay will be updated accordingly.
946 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
948 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
949 struct snd_soc_platform
*platform
= rtd
->platform
;
950 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
951 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
952 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
953 snd_pcm_uframes_t offset
= 0;
954 snd_pcm_sframes_t delay
= 0;
956 if (platform
->driver
->ops
->pointer
)
957 offset
= platform
->driver
->ops
->pointer(substream
);
959 if (cpu_dai
->driver
->ops
->delay
)
960 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
962 if (codec_dai
->driver
->ops
->delay
)
963 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
965 if (platform
->driver
->delay
)
966 delay
+= platform
->driver
->delay(substream
, codec_dai
);
968 runtime
->delay
= delay
;
973 /* ASoC PCM operations */
974 static struct snd_pcm_ops soc_pcm_ops
= {
975 .open
= soc_pcm_open
,
976 .close
= soc_codec_close
,
977 .hw_params
= soc_pcm_hw_params
,
978 .hw_free
= soc_pcm_hw_free
,
979 .prepare
= soc_pcm_prepare
,
980 .trigger
= soc_pcm_trigger
,
981 .pointer
= soc_pcm_pointer
,
985 /* powers down audio subsystem for suspend */
986 static int soc_suspend(struct device
*dev
)
988 struct platform_device
*pdev
= to_platform_device(dev
);
989 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
992 /* If the initialization of this soc device failed, there is no codec
993 * associated with it. Just bail out in this case.
995 if (list_empty(&card
->codec_dev_list
))
998 /* Due to the resume being scheduled into a workqueue we could
999 * suspend before that's finished - wait for it to complete.
1001 snd_power_lock(card
->snd_card
);
1002 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1003 snd_power_unlock(card
->snd_card
);
1005 /* we're going to block userspace touching us until resume completes */
1006 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
1008 /* mute any active DAC's */
1009 for (i
= 0; i
< card
->num_rtd
; i
++) {
1010 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1011 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1013 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1016 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1017 drv
->ops
->digital_mute(dai
, 1);
1020 /* suspend all pcms */
1021 for (i
= 0; i
< card
->num_rtd
; i
++) {
1022 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1025 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
1028 if (card
->suspend_pre
)
1029 card
->suspend_pre(pdev
, PMSG_SUSPEND
);
1031 for (i
= 0; i
< card
->num_rtd
; i
++) {
1032 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1033 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1035 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1038 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
1039 cpu_dai
->driver
->suspend(cpu_dai
);
1040 if (platform
->driver
->suspend
&& !platform
->suspended
) {
1041 platform
->driver
->suspend(cpu_dai
);
1042 platform
->suspended
= 1;
1046 /* close any waiting streams and save state */
1047 for (i
= 0; i
< card
->num_rtd
; i
++) {
1048 run_delayed_work(&card
->rtd
[i
].delayed_work
);
1049 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
1052 for (i
= 0; i
< card
->num_rtd
; i
++) {
1053 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1055 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1058 if (driver
->playback
.stream_name
!= NULL
)
1059 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1060 SND_SOC_DAPM_STREAM_SUSPEND
);
1062 if (driver
->capture
.stream_name
!= NULL
)
1063 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1064 SND_SOC_DAPM_STREAM_SUSPEND
);
1067 /* suspend all CODECs */
1068 for (i
= 0; i
< card
->num_rtd
; i
++) {
1069 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
1070 /* If there are paths active then the CODEC will be held with
1071 * bias _ON and should not be suspended. */
1072 if (!codec
->suspended
&& codec
->driver
->suspend
) {
1073 switch (codec
->dapm
.bias_level
) {
1074 case SND_SOC_BIAS_STANDBY
:
1075 case SND_SOC_BIAS_OFF
:
1076 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
1077 codec
->suspended
= 1;
1080 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
1086 for (i
= 0; i
< card
->num_rtd
; i
++) {
1087 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1089 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1092 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
1093 cpu_dai
->driver
->suspend(cpu_dai
);
1096 if (card
->suspend_post
)
1097 card
->suspend_post(pdev
, PMSG_SUSPEND
);
1102 /* deferred resume work, so resume can complete before we finished
1103 * setting our codec back up, which can be very slow on I2C
1105 static void soc_resume_deferred(struct work_struct
*work
)
1107 struct snd_soc_card
*card
=
1108 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
1109 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1112 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1113 * so userspace apps are blocked from touching us
1116 dev_dbg(card
->dev
, "starting resume work\n");
1118 /* Bring us up into D2 so that DAPM starts enabling things */
1119 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
1121 if (card
->resume_pre
)
1122 card
->resume_pre(pdev
);
1124 /* resume AC97 DAIs */
1125 for (i
= 0; i
< card
->num_rtd
; i
++) {
1126 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1128 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1131 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1132 cpu_dai
->driver
->resume(cpu_dai
);
1135 for (i
= 0; i
< card
->num_rtd
; i
++) {
1136 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
1137 /* If the CODEC was idle over suspend then it will have been
1138 * left with bias OFF or STANDBY and suspended so we must now
1139 * resume. Otherwise the suspend was suppressed.
1141 if (codec
->driver
->resume
&& codec
->suspended
) {
1142 switch (codec
->dapm
.bias_level
) {
1143 case SND_SOC_BIAS_STANDBY
:
1144 case SND_SOC_BIAS_OFF
:
1145 codec
->driver
->resume(codec
);
1146 codec
->suspended
= 0;
1149 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1155 for (i
= 0; i
< card
->num_rtd
; i
++) {
1156 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1158 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1161 if (driver
->playback
.stream_name
!= NULL
)
1162 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1163 SND_SOC_DAPM_STREAM_RESUME
);
1165 if (driver
->capture
.stream_name
!= NULL
)
1166 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1167 SND_SOC_DAPM_STREAM_RESUME
);
1170 /* unmute any active DACs */
1171 for (i
= 0; i
< card
->num_rtd
; i
++) {
1172 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1173 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1175 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1178 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1179 drv
->ops
->digital_mute(dai
, 0);
1182 for (i
= 0; i
< card
->num_rtd
; i
++) {
1183 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1184 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1186 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1189 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1190 cpu_dai
->driver
->resume(cpu_dai
);
1191 if (platform
->driver
->resume
&& platform
->suspended
) {
1192 platform
->driver
->resume(cpu_dai
);
1193 platform
->suspended
= 0;
1197 if (card
->resume_post
)
1198 card
->resume_post(pdev
);
1200 dev_dbg(card
->dev
, "resume work completed\n");
1202 /* userspace can access us now we are back as we were before */
1203 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1206 /* powers up audio subsystem after a suspend */
1207 static int soc_resume(struct device
*dev
)
1209 struct platform_device
*pdev
= to_platform_device(dev
);
1210 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1213 /* AC97 devices might have other drivers hanging off them so
1214 * need to resume immediately. Other drivers don't have that
1215 * problem and may take a substantial amount of time to resume
1216 * due to I/O costs and anti-pop so handle them out of line.
1218 for (i
= 0; i
< card
->num_rtd
; i
++) {
1219 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1220 if (cpu_dai
->driver
->ac97_control
) {
1221 dev_dbg(dev
, "Resuming AC97 immediately\n");
1222 soc_resume_deferred(&card
->deferred_resume_work
);
1224 dev_dbg(dev
, "Scheduling resume work\n");
1225 if (!schedule_work(&card
->deferred_resume_work
))
1226 dev_err(dev
, "resume work item may be lost\n");
1233 #define soc_suspend NULL
1234 #define soc_resume NULL
1237 static struct snd_soc_dai_ops null_dai_ops
= {
1240 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1242 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1243 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1244 struct snd_soc_codec
*codec
;
1245 struct snd_soc_platform
*platform
;
1246 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1250 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1252 /* do we already have the CPU DAI for this link ? */
1256 /* no, then find CPU DAI from registered DAIs*/
1257 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1258 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1260 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1263 rtd
->cpu_dai
= cpu_dai
;
1267 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1268 dai_link
->cpu_dai_name
);
1271 /* do we already have the CODEC for this link ? */
1276 /* no, then find CODEC from registered CODECs*/
1277 list_for_each_entry(codec
, &codec_list
, list
) {
1278 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1281 if (!try_module_get(codec
->dev
->driver
->owner
))
1284 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1285 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1286 if (codec
->dev
== codec_dai
->dev
&&
1287 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1288 rtd
->codec_dai
= codec_dai
;
1292 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1293 dai_link
->codec_dai_name
);
1298 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1299 dai_link
->codec_name
);
1302 /* do we already have the CODEC DAI for this link ? */
1303 if (rtd
->platform
) {
1306 /* no, then find CPU DAI from registered DAIs*/
1307 list_for_each_entry(platform
, &platform_list
, list
) {
1308 if (!strcmp(platform
->name
, dai_link
->platform_name
)) {
1310 if (!try_module_get(platform
->dev
->driver
->owner
))
1313 rtd
->platform
= platform
;
1318 dev_dbg(card
->dev
, "platform %s not registered\n",
1319 dai_link
->platform_name
);
1323 /* mark rtd as complete if we found all 4 of our client devices */
1324 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1331 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1333 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1334 struct snd_soc_codec
*codec
= rtd
->codec
;
1335 struct snd_soc_platform
*platform
= rtd
->platform
;
1336 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1339 /* unregister the rtd device */
1340 if (rtd
->dev_registered
) {
1341 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1342 device_unregister(&rtd
->dev
);
1343 rtd
->dev_registered
= 0;
1346 /* remove the CODEC DAI */
1347 if (codec_dai
&& codec_dai
->probed
) {
1348 if (codec_dai
->driver
->remove
) {
1349 err
= codec_dai
->driver
->remove(codec_dai
);
1351 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1353 codec_dai
->probed
= 0;
1354 list_del(&codec_dai
->card_list
);
1357 /* remove the platform */
1358 if (platform
&& platform
->probed
) {
1359 if (platform
->driver
->remove
) {
1360 err
= platform
->driver
->remove(platform
);
1362 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1364 platform
->probed
= 0;
1365 list_del(&platform
->card_list
);
1366 module_put(platform
->dev
->driver
->owner
);
1369 /* remove the CODEC */
1370 if (codec
&& codec
->probed
) {
1371 if (codec
->driver
->remove
) {
1372 err
= codec
->driver
->remove(codec
);
1374 printk(KERN_ERR
"asoc: failed to remove %s\n", codec
->name
);
1377 /* Make sure all DAPM widgets are freed */
1378 snd_soc_dapm_free(&codec
->dapm
);
1380 soc_cleanup_codec_debugfs(codec
);
1381 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1383 list_del(&codec
->card_list
);
1384 module_put(codec
->dev
->driver
->owner
);
1387 /* remove the cpu_dai */
1388 if (cpu_dai
&& cpu_dai
->probed
) {
1389 if (cpu_dai
->driver
->remove
) {
1390 err
= cpu_dai
->driver
->remove(cpu_dai
);
1392 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1394 cpu_dai
->probed
= 0;
1395 list_del(&cpu_dai
->card_list
);
1396 module_put(cpu_dai
->dev
->driver
->owner
);
1400 static void rtd_release(struct device
*dev
) {}
1402 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1404 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1405 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1406 struct snd_soc_codec
*codec
= rtd
->codec
;
1407 struct snd_soc_platform
*platform
= rtd
->platform
;
1408 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1411 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1413 /* config components */
1414 codec_dai
->codec
= codec
;
1416 cpu_dai
->platform
= platform
;
1418 rtd
->dev
.parent
= card
->dev
;
1419 codec_dai
->card
= card
;
1420 cpu_dai
->card
= card
;
1422 /* set default power off timeout */
1423 rtd
->pmdown_time
= pmdown_time
;
1425 /* probe the cpu_dai */
1426 if (!cpu_dai
->probed
) {
1427 if (cpu_dai
->driver
->probe
) {
1428 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1430 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1435 cpu_dai
->probed
= 1;
1436 /* mark cpu_dai as probed and add to card cpu_dai list */
1437 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1440 /* probe the CODEC */
1441 if (!codec
->probed
) {
1442 codec
->dapm
.card
= card
;
1443 if (codec
->driver
->probe
) {
1444 ret
= codec
->driver
->probe(codec
);
1446 printk(KERN_ERR
"asoc: failed to probe CODEC %s\n",
1452 soc_init_codec_debugfs(codec
);
1454 /* mark codec as probed and add to card codec list */
1456 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1459 /* probe the platform */
1460 if (!platform
->probed
) {
1461 if (platform
->driver
->probe
) {
1462 ret
= platform
->driver
->probe(platform
);
1464 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1469 /* mark platform as probed and add to card platform list */
1470 platform
->probed
= 1;
1471 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1474 /* probe the CODEC DAI */
1475 if (!codec_dai
->probed
) {
1476 if (codec_dai
->driver
->probe
) {
1477 ret
= codec_dai
->driver
->probe(codec_dai
);
1479 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1485 /* mark cpu_dai as probed and add to card cpu_dai list */
1486 codec_dai
->probed
= 1;
1487 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1490 /* DAPM dai link stream work */
1491 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1493 /* now that all clients have probed, initialise the DAI link */
1494 if (dai_link
->init
) {
1495 ret
= dai_link
->init(rtd
);
1497 printk(KERN_ERR
"asoc: failed to init %s\n", dai_link
->stream_name
);
1502 /* Make sure all DAPM widgets are instantiated */
1503 snd_soc_dapm_new_widgets(&codec
->dapm
);
1504 snd_soc_dapm_sync(&codec
->dapm
);
1506 /* register the rtd device */
1507 rtd
->dev
.release
= rtd_release
;
1508 rtd
->dev
.init_name
= dai_link
->name
;
1509 ret
= device_register(&rtd
->dev
);
1511 printk(KERN_ERR
"asoc: failed to register DAI runtime device %d\n", ret
);
1515 rtd
->dev_registered
= 1;
1516 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1518 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1520 /* add DAPM sysfs entries for this codec */
1521 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1523 printk(KERN_WARNING
"asoc: failed to add codec dapm sysfs entries\n");
1525 /* add codec sysfs entries */
1526 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1528 printk(KERN_WARNING
"asoc: failed to add codec sysfs files\n");
1530 /* create the pcm */
1531 ret
= soc_new_pcm(rtd
, num
);
1533 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1537 /* add platform data for AC97 devices */
1538 if (rtd
->codec_dai
->driver
->ac97_control
)
1539 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1544 #ifdef CONFIG_SND_SOC_AC97_BUS
1545 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1549 /* Only instantiate AC97 if not already done by the adaptor
1550 * for the generic AC97 subsystem.
1552 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1554 * It is possible that the AC97 device is already registered to
1555 * the device subsystem. This happens when the device is created
1556 * via snd_ac97_mixer(). Currently only SoC codec that does so
1557 * is the generic AC97 glue but others migh emerge.
1559 * In those cases we don't try to register the device again.
1561 if (!rtd
->codec
->ac97_created
)
1564 ret
= soc_ac97_dev_register(rtd
->codec
);
1566 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1570 rtd
->codec
->ac97_registered
= 1;
1575 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1577 if (codec
->ac97_registered
) {
1578 soc_ac97_dev_unregister(codec
);
1579 codec
->ac97_registered
= 0;
1584 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1586 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1589 mutex_lock(&card
->mutex
);
1591 if (card
->instantiated
) {
1592 mutex_unlock(&card
->mutex
);
1597 for (i
= 0; i
< card
->num_links
; i
++)
1598 soc_bind_dai_link(card
, i
);
1600 /* bind completed ? */
1601 if (card
->num_rtd
!= card
->num_links
) {
1602 mutex_unlock(&card
->mutex
);
1606 /* card bind complete so register a sound card */
1607 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1608 card
->owner
, 0, &card
->snd_card
);
1610 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1612 mutex_unlock(&card
->mutex
);
1615 card
->snd_card
->dev
= card
->dev
;
1618 /* deferred resume work */
1619 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1622 /* initialise the sound card only once */
1624 ret
= card
->probe(pdev
);
1626 goto card_probe_error
;
1629 for (i
= 0; i
< card
->num_links
; i
++) {
1630 ret
= soc_probe_dai_link(card
, i
);
1632 pr_err("asoc: failed to instantiate card %s: %d\n",
1638 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1640 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1643 ret
= snd_card_register(card
->snd_card
);
1645 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1649 #ifdef CONFIG_SND_SOC_AC97_BUS
1650 /* register any AC97 codecs */
1651 for (i
= 0; i
< card
->num_rtd
; i
++) {
1652 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1654 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1660 card
->instantiated
= 1;
1661 mutex_unlock(&card
->mutex
);
1665 for (i
= 0; i
< card
->num_links
; i
++)
1666 soc_remove_dai_link(card
, i
);
1672 snd_card_free(card
->snd_card
);
1674 mutex_unlock(&card
->mutex
);
1678 * Attempt to initialise any uninitialised cards. Must be called with
1681 static void snd_soc_instantiate_cards(void)
1683 struct snd_soc_card
*card
;
1684 list_for_each_entry(card
, &card_list
, list
)
1685 snd_soc_instantiate_card(card
);
1688 /* probes a new socdev */
1689 static int soc_probe(struct platform_device
*pdev
)
1691 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1694 /* Bodge while we unpick instantiation */
1695 card
->dev
= &pdev
->dev
;
1696 INIT_LIST_HEAD(&card
->dai_dev_list
);
1697 INIT_LIST_HEAD(&card
->codec_dev_list
);
1698 INIT_LIST_HEAD(&card
->platform_dev_list
);
1700 soc_init_card_debugfs(card
);
1702 ret
= snd_soc_register_card(card
);
1704 dev_err(&pdev
->dev
, "Failed to register card\n");
1711 /* removes a socdev */
1712 static int soc_remove(struct platform_device
*pdev
)
1714 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1717 if (card
->instantiated
) {
1719 /* make sure any delayed work runs */
1720 for (i
= 0; i
< card
->num_rtd
; i
++) {
1721 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1722 run_delayed_work(&rtd
->delayed_work
);
1725 /* remove and free each DAI */
1726 for (i
= 0; i
< card
->num_rtd
; i
++)
1727 soc_remove_dai_link(card
, i
);
1729 soc_cleanup_card_debugfs(card
);
1731 /* remove the card */
1736 snd_card_free(card
->snd_card
);
1738 snd_soc_unregister_card(card
);
1742 static int soc_poweroff(struct device
*dev
)
1744 struct platform_device
*pdev
= to_platform_device(dev
);
1745 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1748 if (!card
->instantiated
)
1751 /* Flush out pmdown_time work - we actually do want to run it
1752 * now, we're shutting down so no imminent restart. */
1753 for (i
= 0; i
< card
->num_rtd
; i
++) {
1754 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1755 run_delayed_work(&rtd
->delayed_work
);
1758 snd_soc_dapm_shutdown(card
);
1763 static const struct dev_pm_ops soc_pm_ops
= {
1764 .suspend
= soc_suspend
,
1765 .resume
= soc_resume
,
1766 .poweroff
= soc_poweroff
,
1769 /* ASoC platform driver */
1770 static struct platform_driver soc_driver
= {
1772 .name
= "soc-audio",
1773 .owner
= THIS_MODULE
,
1777 .remove
= soc_remove
,
1780 /* create a new pcm */
1781 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
1783 struct snd_soc_codec
*codec
= rtd
->codec
;
1784 struct snd_soc_platform
*platform
= rtd
->platform
;
1785 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1786 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1787 struct snd_pcm
*pcm
;
1789 int ret
= 0, playback
= 0, capture
= 0;
1791 /* check client and interface hw capabilities */
1792 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
1793 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
1795 if (codec_dai
->driver
->playback
.channels_min
)
1797 if (codec_dai
->driver
->capture
.channels_min
)
1800 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
1801 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
1802 num
, playback
, capture
, &pcm
);
1804 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
1809 pcm
->private_data
= rtd
;
1810 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
1811 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
1812 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
1813 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
1814 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
1815 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
1816 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
1819 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
1822 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
1824 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
, codec_dai
, pcm
);
1826 printk(KERN_ERR
"asoc: platform pcm constructor failed\n");
1830 pcm
->private_free
= platform
->driver
->pcm_free
;
1831 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
1837 * snd_soc_codec_volatile_register: Report if a register is volatile.
1839 * @codec: CODEC to query.
1840 * @reg: Register to query.
1842 * Boolean function indiciating if a CODEC register is volatile.
1844 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
, int reg
)
1846 if (codec
->driver
->volatile_register
)
1847 return codec
->driver
->volatile_register(reg
);
1851 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1854 * snd_soc_new_ac97_codec - initailise AC97 device
1855 * @codec: audio codec
1856 * @ops: AC97 bus operations
1857 * @num: AC97 codec number
1859 * Initialises AC97 codec resources for use by ad-hoc devices only.
1861 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1862 struct snd_ac97_bus_ops
*ops
, int num
)
1864 mutex_lock(&codec
->mutex
);
1866 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1867 if (codec
->ac97
== NULL
) {
1868 mutex_unlock(&codec
->mutex
);
1872 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1873 if (codec
->ac97
->bus
== NULL
) {
1876 mutex_unlock(&codec
->mutex
);
1880 codec
->ac97
->bus
->ops
= ops
;
1881 codec
->ac97
->num
= num
;
1884 * Mark the AC97 device to be created by us. This way we ensure that the
1885 * device will be registered with the device subsystem later on.
1887 codec
->ac97_created
= 1;
1889 mutex_unlock(&codec
->mutex
);
1892 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1895 * snd_soc_free_ac97_codec - free AC97 codec device
1896 * @codec: audio codec
1898 * Frees AC97 codec device resources.
1900 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1902 mutex_lock(&codec
->mutex
);
1903 #ifdef CONFIG_SND_SOC_AC97_BUS
1904 soc_unregister_ac97_dai_link(codec
);
1906 kfree(codec
->ac97
->bus
);
1909 codec
->ac97_created
= 0;
1910 mutex_unlock(&codec
->mutex
);
1912 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1914 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1918 ret
= codec
->driver
->read(codec
, reg
);
1919 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1920 trace_snd_soc_reg_read(codec
, reg
, ret
);
1924 EXPORT_SYMBOL_GPL(snd_soc_read
);
1926 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1927 unsigned int reg
, unsigned int val
)
1929 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1930 trace_snd_soc_reg_write(codec
, reg
, val
);
1931 return codec
->driver
->write(codec
, reg
, val
);
1933 EXPORT_SYMBOL_GPL(snd_soc_write
);
1936 * snd_soc_update_bits - update codec register bits
1937 * @codec: audio codec
1938 * @reg: codec register
1939 * @mask: register mask
1942 * Writes new register value.
1944 * Returns 1 for change else 0.
1946 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1947 unsigned int mask
, unsigned int value
)
1950 unsigned int old
, new;
1952 old
= snd_soc_read(codec
, reg
);
1953 new = (old
& ~mask
) | value
;
1954 change
= old
!= new;
1956 snd_soc_write(codec
, reg
, new);
1960 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1963 * snd_soc_update_bits_locked - update codec register bits
1964 * @codec: audio codec
1965 * @reg: codec register
1966 * @mask: register mask
1969 * Writes new register value, and takes the codec mutex.
1971 * Returns 1 for change else 0.
1973 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1974 unsigned short reg
, unsigned int mask
,
1979 mutex_lock(&codec
->mutex
);
1980 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1981 mutex_unlock(&codec
->mutex
);
1985 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1988 * snd_soc_test_bits - test register for change
1989 * @codec: audio codec
1990 * @reg: codec register
1991 * @mask: register mask
1994 * Tests a register with a new value and checks if the new value is
1995 * different from the old value.
1997 * Returns 1 for change else 0.
1999 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2000 unsigned int mask
, unsigned int value
)
2003 unsigned int old
, new;
2005 old
= snd_soc_read(codec
, reg
);
2006 new = (old
& ~mask
) | value
;
2007 change
= old
!= new;
2011 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2014 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2015 * @substream: the pcm substream
2016 * @hw: the hardware parameters
2018 * Sets the substream runtime hardware parameters.
2020 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2021 const struct snd_pcm_hardware
*hw
)
2023 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2024 runtime
->hw
.info
= hw
->info
;
2025 runtime
->hw
.formats
= hw
->formats
;
2026 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2027 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2028 runtime
->hw
.periods_min
= hw
->periods_min
;
2029 runtime
->hw
.periods_max
= hw
->periods_max
;
2030 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2031 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2034 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2037 * snd_soc_cnew - create new control
2038 * @_template: control template
2039 * @data: control private data
2040 * @long_name: control long name
2042 * Create a new mixer control from a template control.
2044 * Returns 0 for success, else error.
2046 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2047 void *data
, char *long_name
)
2049 struct snd_kcontrol_new
template;
2051 memcpy(&template, _template
, sizeof(template));
2053 template.name
= long_name
;
2056 return snd_ctl_new1(&template, data
);
2058 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2061 * snd_soc_add_controls - add an array of controls to a codec.
2062 * Convienience function to add a list of controls. Many codecs were
2063 * duplicating this code.
2065 * @codec: codec to add controls to
2066 * @controls: array of controls to add
2067 * @num_controls: number of elements in the array
2069 * Return 0 for success, else error.
2071 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2072 const struct snd_kcontrol_new
*controls
, int num_controls
)
2074 struct snd_card
*card
= codec
->card
->snd_card
;
2077 for (i
= 0; i
< num_controls
; i
++) {
2078 const struct snd_kcontrol_new
*control
= &controls
[i
];
2079 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
, NULL
));
2081 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2082 codec
->name
, control
->name
, err
);
2089 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2092 * snd_soc_info_enum_double - enumerated double mixer info callback
2093 * @kcontrol: mixer control
2094 * @uinfo: control element information
2096 * Callback to provide information about a double enumerated
2099 * Returns 0 for success.
2101 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2102 struct snd_ctl_elem_info
*uinfo
)
2104 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2106 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2107 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2108 uinfo
->value
.enumerated
.items
= e
->max
;
2110 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2111 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2112 strcpy(uinfo
->value
.enumerated
.name
,
2113 e
->texts
[uinfo
->value
.enumerated
.item
]);
2116 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2119 * snd_soc_get_enum_double - enumerated double mixer get callback
2120 * @kcontrol: mixer control
2121 * @ucontrol: control element information
2123 * Callback to get the value of a double enumerated mixer.
2125 * Returns 0 for success.
2127 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2128 struct snd_ctl_elem_value
*ucontrol
)
2130 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2131 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2132 unsigned int val
, bitmask
;
2134 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2136 val
= snd_soc_read(codec
, e
->reg
);
2137 ucontrol
->value
.enumerated
.item
[0]
2138 = (val
>> e
->shift_l
) & (bitmask
- 1);
2139 if (e
->shift_l
!= e
->shift_r
)
2140 ucontrol
->value
.enumerated
.item
[1] =
2141 (val
>> e
->shift_r
) & (bitmask
- 1);
2145 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2148 * snd_soc_put_enum_double - enumerated double mixer put callback
2149 * @kcontrol: mixer control
2150 * @ucontrol: control element information
2152 * Callback to set the value of a double enumerated mixer.
2154 * Returns 0 for success.
2156 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2157 struct snd_ctl_elem_value
*ucontrol
)
2159 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2160 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2162 unsigned int mask
, bitmask
;
2164 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2166 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2168 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2169 mask
= (bitmask
- 1) << e
->shift_l
;
2170 if (e
->shift_l
!= e
->shift_r
) {
2171 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2173 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2174 mask
|= (bitmask
- 1) << e
->shift_r
;
2177 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2179 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2182 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2183 * @kcontrol: mixer control
2184 * @ucontrol: control element information
2186 * Callback to get the value of a double semi enumerated mixer.
2188 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2189 * used for handling bitfield coded enumeration for example.
2191 * Returns 0 for success.
2193 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2194 struct snd_ctl_elem_value
*ucontrol
)
2196 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2197 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2198 unsigned int reg_val
, val
, mux
;
2200 reg_val
= snd_soc_read(codec
, e
->reg
);
2201 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2202 for (mux
= 0; mux
< e
->max
; mux
++) {
2203 if (val
== e
->values
[mux
])
2206 ucontrol
->value
.enumerated
.item
[0] = mux
;
2207 if (e
->shift_l
!= e
->shift_r
) {
2208 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2209 for (mux
= 0; mux
< e
->max
; mux
++) {
2210 if (val
== e
->values
[mux
])
2213 ucontrol
->value
.enumerated
.item
[1] = mux
;
2218 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2221 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2222 * @kcontrol: mixer control
2223 * @ucontrol: control element information
2225 * Callback to set the value of a double semi enumerated mixer.
2227 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2228 * used for handling bitfield coded enumeration for example.
2230 * Returns 0 for success.
2232 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2233 struct snd_ctl_elem_value
*ucontrol
)
2235 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2236 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2240 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2242 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2243 mask
= e
->mask
<< e
->shift_l
;
2244 if (e
->shift_l
!= e
->shift_r
) {
2245 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2247 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2248 mask
|= e
->mask
<< e
->shift_r
;
2251 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2253 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2256 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2257 * @kcontrol: mixer control
2258 * @uinfo: control element information
2260 * Callback to provide information about an external enumerated
2263 * Returns 0 for success.
2265 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2266 struct snd_ctl_elem_info
*uinfo
)
2268 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2270 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2272 uinfo
->value
.enumerated
.items
= e
->max
;
2274 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2275 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2276 strcpy(uinfo
->value
.enumerated
.name
,
2277 e
->texts
[uinfo
->value
.enumerated
.item
]);
2280 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2283 * snd_soc_info_volsw_ext - external single mixer info callback
2284 * @kcontrol: mixer control
2285 * @uinfo: control element information
2287 * Callback to provide information about a single external mixer control.
2289 * Returns 0 for success.
2291 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2292 struct snd_ctl_elem_info
*uinfo
)
2294 int max
= kcontrol
->private_value
;
2296 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2297 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2299 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2302 uinfo
->value
.integer
.min
= 0;
2303 uinfo
->value
.integer
.max
= max
;
2306 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2309 * snd_soc_info_volsw - single mixer info callback
2310 * @kcontrol: mixer control
2311 * @uinfo: control element information
2313 * Callback to provide information about a single mixer control.
2315 * Returns 0 for success.
2317 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2318 struct snd_ctl_elem_info
*uinfo
)
2320 struct soc_mixer_control
*mc
=
2321 (struct soc_mixer_control
*)kcontrol
->private_value
;
2323 unsigned int shift
= mc
->shift
;
2324 unsigned int rshift
= mc
->rshift
;
2326 if (!mc
->platform_max
)
2327 mc
->platform_max
= mc
->max
;
2328 platform_max
= mc
->platform_max
;
2330 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2331 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2333 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2335 uinfo
->count
= shift
== rshift
? 1 : 2;
2336 uinfo
->value
.integer
.min
= 0;
2337 uinfo
->value
.integer
.max
= platform_max
;
2340 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2343 * snd_soc_get_volsw - single mixer get callback
2344 * @kcontrol: mixer control
2345 * @ucontrol: control element information
2347 * Callback to get the value of a single mixer control.
2349 * Returns 0 for success.
2351 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2352 struct snd_ctl_elem_value
*ucontrol
)
2354 struct soc_mixer_control
*mc
=
2355 (struct soc_mixer_control
*)kcontrol
->private_value
;
2356 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2357 unsigned int reg
= mc
->reg
;
2358 unsigned int shift
= mc
->shift
;
2359 unsigned int rshift
= mc
->rshift
;
2361 unsigned int mask
= (1 << fls(max
)) - 1;
2362 unsigned int invert
= mc
->invert
;
2364 ucontrol
->value
.integer
.value
[0] =
2365 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2366 if (shift
!= rshift
)
2367 ucontrol
->value
.integer
.value
[1] =
2368 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2370 ucontrol
->value
.integer
.value
[0] =
2371 max
- ucontrol
->value
.integer
.value
[0];
2372 if (shift
!= rshift
)
2373 ucontrol
->value
.integer
.value
[1] =
2374 max
- ucontrol
->value
.integer
.value
[1];
2379 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2382 * snd_soc_put_volsw - single mixer put callback
2383 * @kcontrol: mixer control
2384 * @ucontrol: control element information
2386 * Callback to set the value of a single mixer control.
2388 * Returns 0 for success.
2390 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2391 struct snd_ctl_elem_value
*ucontrol
)
2393 struct soc_mixer_control
*mc
=
2394 (struct soc_mixer_control
*)kcontrol
->private_value
;
2395 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2396 unsigned int reg
= mc
->reg
;
2397 unsigned int shift
= mc
->shift
;
2398 unsigned int rshift
= mc
->rshift
;
2400 unsigned int mask
= (1 << fls(max
)) - 1;
2401 unsigned int invert
= mc
->invert
;
2402 unsigned int val
, val2
, val_mask
;
2404 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2407 val_mask
= mask
<< shift
;
2409 if (shift
!= rshift
) {
2410 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2413 val_mask
|= mask
<< rshift
;
2414 val
|= val2
<< rshift
;
2416 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2418 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2421 * snd_soc_info_volsw_2r - double mixer info callback
2422 * @kcontrol: mixer control
2423 * @uinfo: control element information
2425 * Callback to provide information about a double mixer control that
2426 * spans 2 codec registers.
2428 * Returns 0 for success.
2430 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2431 struct snd_ctl_elem_info
*uinfo
)
2433 struct soc_mixer_control
*mc
=
2434 (struct soc_mixer_control
*)kcontrol
->private_value
;
2437 if (!mc
->platform_max
)
2438 mc
->platform_max
= mc
->max
;
2439 platform_max
= mc
->platform_max
;
2441 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2442 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2444 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2447 uinfo
->value
.integer
.min
= 0;
2448 uinfo
->value
.integer
.max
= platform_max
;
2451 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2454 * snd_soc_get_volsw_2r - double mixer get callback
2455 * @kcontrol: mixer control
2456 * @ucontrol: control element information
2458 * Callback to get the value of a double mixer control that spans 2 registers.
2460 * Returns 0 for success.
2462 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2463 struct snd_ctl_elem_value
*ucontrol
)
2465 struct soc_mixer_control
*mc
=
2466 (struct soc_mixer_control
*)kcontrol
->private_value
;
2467 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2468 unsigned int reg
= mc
->reg
;
2469 unsigned int reg2
= mc
->rreg
;
2470 unsigned int shift
= mc
->shift
;
2472 unsigned int mask
= (1 << fls(max
)) - 1;
2473 unsigned int invert
= mc
->invert
;
2475 ucontrol
->value
.integer
.value
[0] =
2476 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2477 ucontrol
->value
.integer
.value
[1] =
2478 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2480 ucontrol
->value
.integer
.value
[0] =
2481 max
- ucontrol
->value
.integer
.value
[0];
2482 ucontrol
->value
.integer
.value
[1] =
2483 max
- ucontrol
->value
.integer
.value
[1];
2488 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2491 * snd_soc_put_volsw_2r - double mixer set callback
2492 * @kcontrol: mixer control
2493 * @ucontrol: control element information
2495 * Callback to set the value of a double mixer control that spans 2 registers.
2497 * Returns 0 for success.
2499 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2500 struct snd_ctl_elem_value
*ucontrol
)
2502 struct soc_mixer_control
*mc
=
2503 (struct soc_mixer_control
*)kcontrol
->private_value
;
2504 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2505 unsigned int reg
= mc
->reg
;
2506 unsigned int reg2
= mc
->rreg
;
2507 unsigned int shift
= mc
->shift
;
2509 unsigned int mask
= (1 << fls(max
)) - 1;
2510 unsigned int invert
= mc
->invert
;
2512 unsigned int val
, val2
, val_mask
;
2514 val_mask
= mask
<< shift
;
2515 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2516 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2524 val2
= val2
<< shift
;
2526 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2530 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2533 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2536 * snd_soc_info_volsw_s8 - signed mixer info callback
2537 * @kcontrol: mixer control
2538 * @uinfo: control element information
2540 * Callback to provide information about a signed mixer control.
2542 * Returns 0 for success.
2544 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2545 struct snd_ctl_elem_info
*uinfo
)
2547 struct soc_mixer_control
*mc
=
2548 (struct soc_mixer_control
*)kcontrol
->private_value
;
2552 if (!mc
->platform_max
)
2553 mc
->platform_max
= mc
->max
;
2554 platform_max
= mc
->platform_max
;
2556 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2558 uinfo
->value
.integer
.min
= 0;
2559 uinfo
->value
.integer
.max
= platform_max
- min
;
2562 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2565 * snd_soc_get_volsw_s8 - signed mixer get callback
2566 * @kcontrol: mixer control
2567 * @ucontrol: control element information
2569 * Callback to get the value of a signed mixer control.
2571 * Returns 0 for success.
2573 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2574 struct snd_ctl_elem_value
*ucontrol
)
2576 struct soc_mixer_control
*mc
=
2577 (struct soc_mixer_control
*)kcontrol
->private_value
;
2578 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2579 unsigned int reg
= mc
->reg
;
2581 int val
= snd_soc_read(codec
, reg
);
2583 ucontrol
->value
.integer
.value
[0] =
2584 ((signed char)(val
& 0xff))-min
;
2585 ucontrol
->value
.integer
.value
[1] =
2586 ((signed char)((val
>> 8) & 0xff))-min
;
2589 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2592 * snd_soc_put_volsw_sgn - signed mixer put callback
2593 * @kcontrol: mixer control
2594 * @ucontrol: control element information
2596 * Callback to set the value of a signed mixer control.
2598 * Returns 0 for success.
2600 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2601 struct snd_ctl_elem_value
*ucontrol
)
2603 struct soc_mixer_control
*mc
=
2604 (struct soc_mixer_control
*)kcontrol
->private_value
;
2605 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2606 unsigned int reg
= mc
->reg
;
2610 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2611 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2613 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2615 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2618 * snd_soc_limit_volume - Set new limit to an existing volume control.
2620 * @codec: where to look for the control
2621 * @name: Name of the control
2622 * @max: new maximum limit
2624 * Return 0 for success, else error.
2626 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2627 const char *name
, int max
)
2629 struct snd_card
*card
= codec
->card
->snd_card
;
2630 struct snd_kcontrol
*kctl
;
2631 struct soc_mixer_control
*mc
;
2635 /* Sanity check for name and max */
2636 if (unlikely(!name
|| max
<= 0))
2639 list_for_each_entry(kctl
, &card
->controls
, list
) {
2640 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2646 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2647 if (max
<= mc
->max
) {
2648 mc
->platform_max
= max
;
2654 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2657 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2658 * mixer info callback
2659 * @kcontrol: mixer control
2660 * @uinfo: control element information
2662 * Returns 0 for success.
2664 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2665 struct snd_ctl_elem_info
*uinfo
)
2667 struct soc_mixer_control
*mc
=
2668 (struct soc_mixer_control
*)kcontrol
->private_value
;
2672 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2674 uinfo
->value
.integer
.min
= 0;
2675 uinfo
->value
.integer
.max
= max
-min
;
2679 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2682 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2683 * mixer get callback
2684 * @kcontrol: mixer control
2685 * @uinfo: control element information
2687 * Returns 0 for success.
2689 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2690 struct snd_ctl_elem_value
*ucontrol
)
2692 struct soc_mixer_control
*mc
=
2693 (struct soc_mixer_control
*)kcontrol
->private_value
;
2694 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2695 unsigned int mask
= (1<<mc
->shift
)-1;
2697 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2698 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2700 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2701 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2704 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2707 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2708 * mixer put callback
2709 * @kcontrol: mixer control
2710 * @uinfo: control element information
2712 * Returns 0 for success.
2714 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2715 struct snd_ctl_elem_value
*ucontrol
)
2717 struct soc_mixer_control
*mc
=
2718 (struct soc_mixer_control
*)kcontrol
->private_value
;
2719 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2720 unsigned int mask
= (1<<mc
->shift
)-1;
2723 unsigned int val
, valr
, oval
, ovalr
;
2725 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2727 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2730 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2731 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2735 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2739 if (ovalr
!= valr
) {
2740 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2747 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2750 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2752 * @clk_id: DAI specific clock ID
2753 * @freq: new clock frequency in Hz
2754 * @dir: new clock direction - input/output.
2756 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2758 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2759 unsigned int freq
, int dir
)
2761 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2762 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2766 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2769 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2771 * @div_id: DAI specific clock divider ID
2772 * @div: new clock divisor.
2774 * Configures the clock dividers. This is used to derive the best DAI bit and
2775 * frame clocks from the system or master clock. It's best to set the DAI bit
2776 * and frame clocks as low as possible to save system power.
2778 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2779 int div_id
, int div
)
2781 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2782 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2786 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2789 * snd_soc_dai_set_pll - configure DAI PLL.
2791 * @pll_id: DAI specific PLL ID
2792 * @source: DAI specific source for the PLL
2793 * @freq_in: PLL input clock frequency in Hz
2794 * @freq_out: requested PLL output clock frequency in Hz
2796 * Configures and enables PLL to generate output clock based on input clock.
2798 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2799 unsigned int freq_in
, unsigned int freq_out
)
2801 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2802 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2807 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2810 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2812 * @fmt: SND_SOC_DAIFMT_ format value.
2814 * Configures the DAI hardware format and clocking.
2816 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2818 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2819 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2823 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2826 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2828 * @tx_mask: bitmask representing active TX slots.
2829 * @rx_mask: bitmask representing active RX slots.
2830 * @slots: Number of slots in use.
2831 * @slot_width: Width in bits for each slot.
2833 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2836 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2837 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2839 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2840 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2845 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2848 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2850 * @tx_num: how many TX channels
2851 * @tx_slot: pointer to an array which imply the TX slot number channel
2853 * @rx_num: how many RX channels
2854 * @rx_slot: pointer to an array which imply the RX slot number channel
2857 * configure the relationship between channel number and TDM slot number.
2859 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2860 unsigned int tx_num
, unsigned int *tx_slot
,
2861 unsigned int rx_num
, unsigned int *rx_slot
)
2863 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2864 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2869 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2872 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2874 * @tristate: tristate enable
2876 * Tristates the DAI so that others can use it.
2878 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2880 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2881 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2885 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2888 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2890 * @mute: mute enable
2892 * Mutes the DAI DAC.
2894 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2896 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2897 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2901 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2904 * snd_soc_register_card - Register a card with the ASoC core
2906 * @card: Card to register
2908 * Note that currently this is an internal only function: it will be
2909 * exposed to machine drivers after further backporting of ASoC v2
2910 * registration APIs.
2912 static int snd_soc_register_card(struct snd_soc_card
*card
)
2916 if (!card
->name
|| !card
->dev
)
2919 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) * card
->num_links
,
2921 if (card
->rtd
== NULL
)
2924 for (i
= 0; i
< card
->num_links
; i
++)
2925 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2927 INIT_LIST_HEAD(&card
->list
);
2928 card
->instantiated
= 0;
2929 mutex_init(&card
->mutex
);
2931 mutex_lock(&client_mutex
);
2932 list_add(&card
->list
, &card_list
);
2933 snd_soc_instantiate_cards();
2934 mutex_unlock(&client_mutex
);
2936 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2942 * snd_soc_unregister_card - Unregister a card with the ASoC core
2944 * @card: Card to unregister
2946 * Note that currently this is an internal only function: it will be
2947 * exposed to machine drivers after further backporting of ASoC v2
2948 * registration APIs.
2950 static int snd_soc_unregister_card(struct snd_soc_card
*card
)
2952 mutex_lock(&client_mutex
);
2953 list_del(&card
->list
);
2954 mutex_unlock(&client_mutex
);
2955 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2961 * Simplify DAI link configuration by removing ".-1" from device names
2962 * and sanitizing names.
2964 static inline char *fmt_single_name(struct device
*dev
, int *id
)
2966 char *found
, name
[NAME_SIZE
];
2969 if (dev_name(dev
) == NULL
)
2972 strncpy(name
, dev_name(dev
), NAME_SIZE
);
2974 /* are we a "%s.%d" name (platform and SPI components) */
2975 found
= strstr(name
, dev
->driver
->name
);
2978 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2980 /* discard ID from name if ID == -1 */
2982 found
[strlen(dev
->driver
->name
)] = '\0';
2986 /* I2C component devices are named "bus-addr" */
2987 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2988 char tmp
[NAME_SIZE
];
2990 /* create unique ID number from I2C addr and bus */
2991 *id
= ((id1
& 0xffff) << 16) + id2
;
2993 /* sanitize component name for DAI link creation */
2994 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2995 strncpy(name
, tmp
, NAME_SIZE
);
3000 return kstrdup(name
, GFP_KERNEL
);
3004 * Simplify DAI link naming for single devices with multiple DAIs by removing
3005 * any ".-1" and using the DAI name (instead of device name).
3007 static inline char *fmt_multiple_name(struct device
*dev
,
3008 struct snd_soc_dai_driver
*dai_drv
)
3010 if (dai_drv
->name
== NULL
) {
3011 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
3016 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3020 * snd_soc_register_dai - Register a DAI with the ASoC core
3022 * @dai: DAI to register
3024 int snd_soc_register_dai(struct device
*dev
,
3025 struct snd_soc_dai_driver
*dai_drv
)
3027 struct snd_soc_dai
*dai
;
3029 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3031 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3035 /* create DAI component name */
3036 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3037 if (dai
->name
== NULL
) {
3043 dai
->driver
= dai_drv
;
3044 if (!dai
->driver
->ops
)
3045 dai
->driver
->ops
= &null_dai_ops
;
3047 mutex_lock(&client_mutex
);
3048 list_add(&dai
->list
, &dai_list
);
3049 snd_soc_instantiate_cards();
3050 mutex_unlock(&client_mutex
);
3052 pr_debug("Registered DAI '%s'\n", dai
->name
);
3056 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3059 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3061 * @dai: DAI to unregister
3063 void snd_soc_unregister_dai(struct device
*dev
)
3065 struct snd_soc_dai
*dai
;
3067 list_for_each_entry(dai
, &dai_list
, list
) {
3068 if (dev
== dai
->dev
)
3074 mutex_lock(&client_mutex
);
3075 list_del(&dai
->list
);
3076 mutex_unlock(&client_mutex
);
3078 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3082 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3085 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3087 * @dai: Array of DAIs to register
3088 * @count: Number of DAIs
3090 int snd_soc_register_dais(struct device
*dev
,
3091 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3093 struct snd_soc_dai
*dai
;
3096 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3098 for (i
= 0; i
< count
; i
++) {
3100 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3106 /* create DAI component name */
3107 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3108 if (dai
->name
== NULL
) {
3115 dai
->driver
= &dai_drv
[i
];
3116 if (dai
->driver
->id
)
3117 dai
->id
= dai
->driver
->id
;
3120 if (!dai
->driver
->ops
)
3121 dai
->driver
->ops
= &null_dai_ops
;
3123 mutex_lock(&client_mutex
);
3124 list_add(&dai
->list
, &dai_list
);
3125 mutex_unlock(&client_mutex
);
3127 pr_debug("Registered DAI '%s'\n", dai
->name
);
3130 snd_soc_instantiate_cards();
3134 for (i
--; i
>= 0; i
--)
3135 snd_soc_unregister_dai(dev
);
3139 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3142 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3144 * @dai: Array of DAIs to unregister
3145 * @count: Number of DAIs
3147 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3151 for (i
= 0; i
< count
; i
++)
3152 snd_soc_unregister_dai(dev
);
3154 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3157 * snd_soc_register_platform - Register a platform with the ASoC core
3159 * @platform: platform to register
3161 int snd_soc_register_platform(struct device
*dev
,
3162 struct snd_soc_platform_driver
*platform_drv
)
3164 struct snd_soc_platform
*platform
;
3166 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3168 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3169 if (platform
== NULL
)
3172 /* create platform component name */
3173 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3174 if (platform
->name
== NULL
) {
3179 platform
->dev
= dev
;
3180 platform
->driver
= platform_drv
;
3182 mutex_lock(&client_mutex
);
3183 list_add(&platform
->list
, &platform_list
);
3184 snd_soc_instantiate_cards();
3185 mutex_unlock(&client_mutex
);
3187 pr_debug("Registered platform '%s'\n", platform
->name
);
3191 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3194 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3196 * @platform: platform to unregister
3198 void snd_soc_unregister_platform(struct device
*dev
)
3200 struct snd_soc_platform
*platform
;
3202 list_for_each_entry(platform
, &platform_list
, list
) {
3203 if (dev
== platform
->dev
)
3209 mutex_lock(&client_mutex
);
3210 list_del(&platform
->list
);
3211 mutex_unlock(&client_mutex
);
3213 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3214 kfree(platform
->name
);
3217 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3219 static u64 codec_format_map
[] = {
3220 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3221 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3222 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3223 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3224 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3225 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3226 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3227 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3228 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3229 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3230 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3231 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3232 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3233 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3234 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3235 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3238 /* Fix up the DAI formats for endianness: codecs don't actually see
3239 * the endianness of the data but we're using the CPU format
3240 * definitions which do need to include endianness so we ensure that
3241 * codec DAIs always have both big and little endian variants set.
3243 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3247 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3248 if (stream
->formats
& codec_format_map
[i
])
3249 stream
->formats
|= codec_format_map
[i
];
3253 * snd_soc_register_codec - Register a codec with the ASoC core
3255 * @codec: codec to register
3257 int snd_soc_register_codec(struct device
*dev
,
3258 struct snd_soc_codec_driver
*codec_drv
,
3259 struct snd_soc_dai_driver
*dai_drv
, int num_dai
)
3261 struct snd_soc_codec
*codec
;
3264 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3266 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3270 /* create CODEC component name */
3271 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3272 if (codec
->name
== NULL
) {
3277 INIT_LIST_HEAD(&codec
->dapm
.widgets
);
3278 INIT_LIST_HEAD(&codec
->dapm
.paths
);
3279 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3280 codec
->dapm
.dev
= dev
;
3281 codec
->dapm
.codec
= codec
;
3283 codec
->driver
= codec_drv
;
3284 codec
->num_dai
= num_dai
;
3285 mutex_init(&codec
->mutex
);
3287 /* allocate CODEC register cache */
3288 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3289 ret
= snd_soc_cache_init(codec
);
3291 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
3297 for (i
= 0; i
< num_dai
; i
++) {
3298 fixup_codec_formats(&dai_drv
[i
].playback
);
3299 fixup_codec_formats(&dai_drv
[i
].capture
);
3302 /* register any DAIs */
3304 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3309 mutex_lock(&client_mutex
);
3310 list_add(&codec
->list
, &codec_list
);
3311 snd_soc_instantiate_cards();
3312 mutex_unlock(&client_mutex
);
3314 pr_debug("Registered codec '%s'\n", codec
->name
);
3318 snd_soc_cache_exit(codec
);
3324 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3327 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3329 * @codec: codec to unregister
3331 void snd_soc_unregister_codec(struct device
*dev
)
3333 struct snd_soc_codec
*codec
;
3336 list_for_each_entry(codec
, &codec_list
, list
) {
3337 if (dev
== codec
->dev
)
3344 for (i
= 0; i
< codec
->num_dai
; i
++)
3345 snd_soc_unregister_dai(dev
);
3347 mutex_lock(&client_mutex
);
3348 list_del(&codec
->list
);
3349 mutex_unlock(&client_mutex
);
3351 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3353 snd_soc_cache_exit(codec
);
3357 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3359 static int __init
snd_soc_init(void)
3361 #ifdef CONFIG_DEBUG_FS
3362 debugfs_root
= debugfs_create_dir("asoc", NULL
);
3363 if (IS_ERR(debugfs_root
) || !debugfs_root
) {
3365 "ASoC: Failed to create debugfs directory\n");
3366 debugfs_root
= NULL
;
3369 if (!debugfs_create_file("codecs", 0444, debugfs_root
, NULL
,
3371 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3373 if (!debugfs_create_file("dais", 0444, debugfs_root
, NULL
,
3375 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3377 if (!debugfs_create_file("platforms", 0444, debugfs_root
, NULL
,
3378 &platform_list_fops
))
3379 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3382 return platform_driver_register(&soc_driver
);
3384 module_init(snd_soc_init
);
3386 static void __exit
snd_soc_exit(void)
3388 #ifdef CONFIG_DEBUG_FS
3389 debugfs_remove_recursive(debugfs_root
);
3391 platform_driver_unregister(&soc_driver
);
3393 module_exit(snd_soc_exit
);
3395 /* Module information */
3396 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3397 MODULE_DESCRIPTION("ALSA SoC Core");
3398 MODULE_LICENSE("GPL");
3399 MODULE_ALIAS("platform:soc-audio");