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>
44 static DEFINE_MUTEX(pcm_mutex
);
45 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
47 #ifdef CONFIG_DEBUG_FS
48 static struct dentry
*debugfs_root
;
51 static DEFINE_MUTEX(client_mutex
);
52 static LIST_HEAD(card_list
);
53 static LIST_HEAD(dai_list
);
54 static LIST_HEAD(platform_list
);
55 static LIST_HEAD(codec_list
);
57 static int snd_soc_register_card(struct snd_soc_card
*card
);
58 static int snd_soc_unregister_card(struct snd_soc_card
*card
);
59 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
);
62 * This is a timeout to do a DAPM powerdown after a stream is closed().
63 * It can be used to eliminate pops between different playback streams, e.g.
64 * between two audio tracks.
66 static int pmdown_time
= 5000;
67 module_param(pmdown_time
, int, 0);
68 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
71 * This function forces any delayed work to be queued and run.
73 static int run_delayed_work(struct delayed_work
*dwork
)
77 /* cancel any work waiting to be queued. */
78 ret
= cancel_delayed_work(dwork
);
80 /* if there was any work waiting then we run it now and
81 * wait for it's completion */
83 schedule_delayed_work(dwork
, 0);
84 flush_scheduled_work();
89 /* codec register dump */
90 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
)
92 int ret
, i
, step
= 1, count
= 0;
94 if (!codec
->driver
->reg_cache_size
)
97 if (codec
->driver
->reg_cache_step
)
98 step
= codec
->driver
->reg_cache_step
;
100 count
+= sprintf(buf
, "%s registers\n", codec
->name
);
101 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
102 if (codec
->driver
->readable_register
&& !codec
->driver
->readable_register(i
))
105 count
+= sprintf(buf
+ count
, "%2x: ", i
);
106 if (count
>= PAGE_SIZE
- 1)
109 if (codec
->driver
->display_register
) {
110 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
111 PAGE_SIZE
- count
, i
);
113 /* If the read fails it's almost certainly due to
114 * the register being volatile and the device being
117 ret
= codec
->driver
->read(codec
, i
);
119 count
+= snprintf(buf
+ count
,
123 count
+= snprintf(buf
+ count
,
125 "<no data: %d>", ret
);
128 if (count
>= PAGE_SIZE
- 1)
131 count
+= snprintf(buf
+ count
, PAGE_SIZE
- count
, "\n");
132 if (count
>= PAGE_SIZE
- 1)
136 /* Truncate count; min() would cause a warning */
137 if (count
>= PAGE_SIZE
)
138 count
= PAGE_SIZE
- 1;
142 static ssize_t
codec_reg_show(struct device
*dev
,
143 struct device_attribute
*attr
, char *buf
)
145 struct snd_soc_pcm_runtime
*rtd
=
146 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
148 return soc_codec_reg_show(rtd
->codec
, buf
);
151 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
153 static ssize_t
pmdown_time_show(struct device
*dev
,
154 struct device_attribute
*attr
, char *buf
)
156 struct snd_soc_pcm_runtime
*rtd
=
157 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
159 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
162 static ssize_t
pmdown_time_set(struct device
*dev
,
163 struct device_attribute
*attr
,
164 const char *buf
, size_t count
)
166 struct snd_soc_pcm_runtime
*rtd
=
167 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
169 strict_strtol(buf
, 10, &rtd
->pmdown_time
);
174 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
176 #ifdef CONFIG_DEBUG_FS
177 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
179 file
->private_data
= inode
->i_private
;
183 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
184 size_t count
, loff_t
*ppos
)
187 struct snd_soc_codec
*codec
= file
->private_data
;
188 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
191 ret
= soc_codec_reg_show(codec
, buf
);
193 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
198 static ssize_t
codec_reg_write_file(struct file
*file
,
199 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
204 unsigned long reg
, value
;
206 struct snd_soc_codec
*codec
= file
->private_data
;
208 buf_size
= min(count
, (sizeof(buf
)-1));
209 if (copy_from_user(buf
, user_buf
, buf_size
))
213 if (codec
->driver
->reg_cache_step
)
214 step
= codec
->driver
->reg_cache_step
;
216 while (*start
== ' ')
218 reg
= simple_strtoul(start
, &start
, 16);
219 if ((reg
>= codec
->driver
->reg_cache_size
) || (reg
% step
))
221 while (*start
== ' ')
223 if (strict_strtoul(start
, 16, &value
))
225 codec
->driver
->write(codec
, reg
, value
);
229 static const struct file_operations codec_reg_fops
= {
230 .open
= codec_reg_open_file
,
231 .read
= codec_reg_read_file
,
232 .write
= codec_reg_write_file
,
235 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
237 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
239 if (!codec
->debugfs_codec_root
) {
241 "ASoC: Failed to create codec debugfs directory\n");
245 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
246 codec
->debugfs_codec_root
,
247 codec
, &codec_reg_fops
);
248 if (!codec
->debugfs_reg
)
250 "ASoC: Failed to create codec register debugfs file\n");
252 codec
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
253 codec
->debugfs_codec_root
,
255 if (!codec
->debugfs_pop_time
)
257 "Failed to create pop time debugfs file\n");
259 codec
->debugfs_dapm
= debugfs_create_dir("dapm",
260 codec
->debugfs_codec_root
);
261 if (!codec
->debugfs_dapm
)
263 "Failed to create DAPM debugfs directory\n");
265 snd_soc_dapm_debugfs_init(codec
);
268 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
270 debugfs_remove_recursive(codec
->debugfs_codec_root
);
273 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
274 size_t count
, loff_t
*ppos
)
276 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
277 ssize_t len
, ret
= 0;
278 struct snd_soc_codec
*codec
;
283 list_for_each_entry(codec
, &codec_list
, list
) {
284 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
288 if (ret
> PAGE_SIZE
) {
295 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
302 static const struct file_operations codec_list_fops
= {
303 .read
= codec_list_read_file
,
304 .llseek
= default_llseek
,/* read accesses f_pos */
307 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
308 size_t count
, loff_t
*ppos
)
310 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
311 ssize_t len
, ret
= 0;
312 struct snd_soc_dai
*dai
;
317 list_for_each_entry(dai
, &dai_list
, list
) {
318 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
321 if (ret
> PAGE_SIZE
) {
327 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
334 static const struct file_operations dai_list_fops
= {
335 .read
= dai_list_read_file
,
336 .llseek
= default_llseek
,/* read accesses f_pos */
339 static ssize_t
platform_list_read_file(struct file
*file
,
340 char __user
*user_buf
,
341 size_t count
, loff_t
*ppos
)
343 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
344 ssize_t len
, ret
= 0;
345 struct snd_soc_platform
*platform
;
350 list_for_each_entry(platform
, &platform_list
, list
) {
351 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
355 if (ret
> PAGE_SIZE
) {
361 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
368 static const struct file_operations platform_list_fops
= {
369 .read
= platform_list_read_file
,
370 .llseek
= default_llseek
,/* read accesses f_pos */
375 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
379 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
384 #ifdef CONFIG_SND_SOC_AC97_BUS
385 /* unregister ac97 codec */
386 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
388 if (codec
->ac97
->dev
.bus
)
389 device_unregister(&codec
->ac97
->dev
);
393 /* stop no dev release warning */
394 static void soc_ac97_device_release(struct device
*dev
){}
396 /* register ac97 codec to bus */
397 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
401 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
402 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
403 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
405 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
406 codec
->card
->snd_card
->number
, 0, codec
->name
);
407 err
= device_register(&codec
->ac97
->dev
);
409 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
410 codec
->ac97
->dev
.bus
= NULL
;
417 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
419 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
420 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
421 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
424 if (codec_dai
->driver
->symmetric_rates
|| cpu_dai
->driver
->symmetric_rates
||
425 rtd
->dai_link
->symmetric_rates
) {
426 dev_dbg(&rtd
->dev
, "Symmetry forces %dHz rate\n",
429 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
430 SNDRV_PCM_HW_PARAM_RATE
,
435 "Unable to apply rate symmetry constraint: %d\n", ret
);
444 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
445 * then initialized and any private data can be allocated. This also calls
446 * startup for the cpu DAI, platform, machine and codec DAI.
448 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
450 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
451 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
452 struct snd_soc_platform
*platform
= rtd
->platform
;
453 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
454 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
455 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
456 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
459 mutex_lock(&pcm_mutex
);
461 /* startup the audio subsystem */
462 if (cpu_dai
->driver
->ops
->startup
) {
463 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
465 printk(KERN_ERR
"asoc: can't open interface %s\n",
471 if (platform
->driver
->ops
->open
) {
472 ret
= platform
->driver
->ops
->open(substream
);
474 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
479 if (codec_dai
->driver
->ops
->startup
) {
480 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
482 printk(KERN_ERR
"asoc: can't open codec %s\n",
488 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
489 ret
= rtd
->dai_link
->ops
->startup(substream
);
491 printk(KERN_ERR
"asoc: %s startup failed\n", rtd
->dai_link
->name
);
496 /* Check that the codec and cpu DAI's are compatible */
497 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
498 runtime
->hw
.rate_min
=
499 max(codec_dai_drv
->playback
.rate_min
,
500 cpu_dai_drv
->playback
.rate_min
);
501 runtime
->hw
.rate_max
=
502 min(codec_dai_drv
->playback
.rate_max
,
503 cpu_dai_drv
->playback
.rate_max
);
504 runtime
->hw
.channels_min
=
505 max(codec_dai_drv
->playback
.channels_min
,
506 cpu_dai_drv
->playback
.channels_min
);
507 runtime
->hw
.channels_max
=
508 min(codec_dai_drv
->playback
.channels_max
,
509 cpu_dai_drv
->playback
.channels_max
);
510 runtime
->hw
.formats
=
511 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
513 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
514 if (codec_dai_drv
->playback
.rates
515 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
516 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
517 if (cpu_dai_drv
->playback
.rates
518 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
519 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
521 runtime
->hw
.rate_min
=
522 max(codec_dai_drv
->capture
.rate_min
,
523 cpu_dai_drv
->capture
.rate_min
);
524 runtime
->hw
.rate_max
=
525 min(codec_dai_drv
->capture
.rate_max
,
526 cpu_dai_drv
->capture
.rate_max
);
527 runtime
->hw
.channels_min
=
528 max(codec_dai_drv
->capture
.channels_min
,
529 cpu_dai_drv
->capture
.channels_min
);
530 runtime
->hw
.channels_max
=
531 min(codec_dai_drv
->capture
.channels_max
,
532 cpu_dai_drv
->capture
.channels_max
);
533 runtime
->hw
.formats
=
534 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
536 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
537 if (codec_dai_drv
->capture
.rates
538 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
539 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
540 if (cpu_dai_drv
->capture
.rates
541 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
542 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
545 snd_pcm_limit_hw_rates(runtime
);
546 if (!runtime
->hw
.rates
) {
547 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
548 codec_dai
->name
, cpu_dai
->name
);
551 if (!runtime
->hw
.formats
) {
552 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
553 codec_dai
->name
, cpu_dai
->name
);
556 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
) {
557 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
558 codec_dai
->name
, cpu_dai
->name
);
562 /* Symmetry only applies if we've already got an active stream. */
563 if (cpu_dai
->active
|| codec_dai
->active
) {
564 ret
= soc_pcm_apply_symmetry(substream
);
569 pr_debug("asoc: %s <-> %s info:\n",
570 codec_dai
->name
, cpu_dai
->name
);
571 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
572 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
573 runtime
->hw
.channels_max
);
574 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
575 runtime
->hw
.rate_max
);
577 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
578 cpu_dai
->playback_active
++;
579 codec_dai
->playback_active
++;
581 cpu_dai
->capture_active
++;
582 codec_dai
->capture_active
++;
586 rtd
->codec
->active
++;
587 mutex_unlock(&pcm_mutex
);
591 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
592 rtd
->dai_link
->ops
->shutdown(substream
);
595 if (codec_dai
->driver
->ops
->shutdown
)
596 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
599 if (platform
->driver
->ops
->close
)
600 platform
->driver
->ops
->close(substream
);
603 if (cpu_dai
->driver
->ops
->shutdown
)
604 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
606 mutex_unlock(&pcm_mutex
);
611 * Power down the audio subsystem pmdown_time msecs after close is called.
612 * This is to ensure there are no pops or clicks in between any music tracks
613 * due to DAPM power cycling.
615 static void close_delayed_work(struct work_struct
*work
)
617 struct snd_soc_pcm_runtime
*rtd
=
618 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
619 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
621 mutex_lock(&pcm_mutex
);
623 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
624 codec_dai
->driver
->playback
.stream_name
,
625 codec_dai
->playback_active
? "active" : "inactive",
626 codec_dai
->pop_wait
? "yes" : "no");
628 /* are we waiting on this codec DAI stream */
629 if (codec_dai
->pop_wait
== 1) {
630 codec_dai
->pop_wait
= 0;
631 snd_soc_dapm_stream_event(rtd
,
632 codec_dai
->driver
->playback
.stream_name
,
633 SND_SOC_DAPM_STREAM_STOP
);
636 mutex_unlock(&pcm_mutex
);
640 * Called by ALSA when a PCM substream is closed. Private data can be
641 * freed here. The cpu DAI, codec DAI, machine and platform are also
644 static int soc_codec_close(struct snd_pcm_substream
*substream
)
646 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
647 struct snd_soc_platform
*platform
= rtd
->platform
;
648 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
649 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
650 struct snd_soc_codec
*codec
= rtd
->codec
;
652 mutex_lock(&pcm_mutex
);
654 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
655 cpu_dai
->playback_active
--;
656 codec_dai
->playback_active
--;
658 cpu_dai
->capture_active
--;
659 codec_dai
->capture_active
--;
666 /* Muting the DAC suppresses artifacts caused during digital
667 * shutdown, for example from stopping clocks.
669 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
670 snd_soc_dai_digital_mute(codec_dai
, 1);
672 if (cpu_dai
->driver
->ops
->shutdown
)
673 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
675 if (codec_dai
->driver
->ops
->shutdown
)
676 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
678 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
679 rtd
->dai_link
->ops
->shutdown(substream
);
681 if (platform
->driver
->ops
->close
)
682 platform
->driver
->ops
->close(substream
);
683 cpu_dai
->runtime
= NULL
;
685 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
686 /* start delayed pop wq here for playback streams */
687 codec_dai
->pop_wait
= 1;
688 schedule_delayed_work(&rtd
->delayed_work
,
689 msecs_to_jiffies(rtd
->pmdown_time
));
691 /* capture streams can be powered down now */
692 snd_soc_dapm_stream_event(rtd
,
693 codec_dai
->driver
->capture
.stream_name
,
694 SND_SOC_DAPM_STREAM_STOP
);
697 mutex_unlock(&pcm_mutex
);
702 * Called by ALSA when the PCM substream is prepared, can set format, sample
703 * rate, etc. This function is non atomic and can be called multiple times,
704 * it can refer to the runtime info.
706 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
708 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
709 struct snd_soc_platform
*platform
= rtd
->platform
;
710 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
711 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
714 mutex_lock(&pcm_mutex
);
716 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
717 ret
= rtd
->dai_link
->ops
->prepare(substream
);
719 printk(KERN_ERR
"asoc: machine prepare error\n");
724 if (platform
->driver
->ops
->prepare
) {
725 ret
= platform
->driver
->ops
->prepare(substream
);
727 printk(KERN_ERR
"asoc: platform prepare error\n");
732 if (codec_dai
->driver
->ops
->prepare
) {
733 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
735 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
740 if (cpu_dai
->driver
->ops
->prepare
) {
741 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
743 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
748 /* cancel any delayed stream shutdown that is pending */
749 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
750 codec_dai
->pop_wait
) {
751 codec_dai
->pop_wait
= 0;
752 cancel_delayed_work(&rtd
->delayed_work
);
755 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
756 snd_soc_dapm_stream_event(rtd
,
757 codec_dai
->driver
->playback
.stream_name
,
758 SND_SOC_DAPM_STREAM_START
);
760 snd_soc_dapm_stream_event(rtd
,
761 codec_dai
->driver
->capture
.stream_name
,
762 SND_SOC_DAPM_STREAM_START
);
764 snd_soc_dai_digital_mute(codec_dai
, 0);
767 mutex_unlock(&pcm_mutex
);
772 * Called by ALSA when the hardware params are set by application. This
773 * function can also be called multiple times and can allocate buffers
774 * (using snd_pcm_lib_* ). It's non-atomic.
776 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
777 struct snd_pcm_hw_params
*params
)
779 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
780 struct snd_soc_platform
*platform
= rtd
->platform
;
781 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
782 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
785 mutex_lock(&pcm_mutex
);
787 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
788 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
790 printk(KERN_ERR
"asoc: machine hw_params failed\n");
795 if (codec_dai
->driver
->ops
->hw_params
) {
796 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
798 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
804 if (cpu_dai
->driver
->ops
->hw_params
) {
805 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
807 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
813 if (platform
->driver
->ops
->hw_params
) {
814 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
816 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
822 rtd
->rate
= params_rate(params
);
825 mutex_unlock(&pcm_mutex
);
829 if (cpu_dai
->driver
->ops
->hw_free
)
830 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
833 if (codec_dai
->driver
->ops
->hw_free
)
834 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
837 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
838 rtd
->dai_link
->ops
->hw_free(substream
);
840 mutex_unlock(&pcm_mutex
);
845 * Free's resources allocated by hw_params, can be called multiple times
847 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
849 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
850 struct snd_soc_platform
*platform
= rtd
->platform
;
851 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
852 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
853 struct snd_soc_codec
*codec
= rtd
->codec
;
855 mutex_lock(&pcm_mutex
);
857 /* apply codec digital mute */
859 snd_soc_dai_digital_mute(codec_dai
, 1);
861 /* free any machine hw params */
862 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
863 rtd
->dai_link
->ops
->hw_free(substream
);
865 /* free any DMA resources */
866 if (platform
->driver
->ops
->hw_free
)
867 platform
->driver
->ops
->hw_free(substream
);
869 /* now free hw params for the DAI's */
870 if (codec_dai
->driver
->ops
->hw_free
)
871 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
873 if (cpu_dai
->driver
->ops
->hw_free
)
874 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
876 mutex_unlock(&pcm_mutex
);
880 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
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
;
888 if (codec_dai
->driver
->ops
->trigger
) {
889 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
894 if (platform
->driver
->ops
->trigger
) {
895 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
900 if (cpu_dai
->driver
->ops
->trigger
) {
901 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
909 * soc level wrapper for pointer callback
910 * If cpu_dai, codec_dai, platform driver has the delay callback, than
911 * the runtime->delay will be updated accordingly.
913 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
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
;
919 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
920 snd_pcm_uframes_t offset
= 0;
921 snd_pcm_sframes_t delay
= 0;
923 if (platform
->driver
->ops
->pointer
)
924 offset
= platform
->driver
->ops
->pointer(substream
);
926 if (cpu_dai
->driver
->ops
->delay
)
927 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
929 if (codec_dai
->driver
->ops
->delay
)
930 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
932 if (platform
->driver
->delay
)
933 delay
+= platform
->driver
->delay(substream
, codec_dai
);
935 runtime
->delay
= delay
;
940 /* ASoC PCM operations */
941 static struct snd_pcm_ops soc_pcm_ops
= {
942 .open
= soc_pcm_open
,
943 .close
= soc_codec_close
,
944 .hw_params
= soc_pcm_hw_params
,
945 .hw_free
= soc_pcm_hw_free
,
946 .prepare
= soc_pcm_prepare
,
947 .trigger
= soc_pcm_trigger
,
948 .pointer
= soc_pcm_pointer
,
952 /* powers down audio subsystem for suspend */
953 static int soc_suspend(struct device
*dev
)
955 struct platform_device
*pdev
= to_platform_device(dev
);
956 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
959 /* If the initialization of this soc device failed, there is no codec
960 * associated with it. Just bail out in this case.
962 if (list_empty(&card
->codec_dev_list
))
965 /* Due to the resume being scheduled into a workqueue we could
966 * suspend before that's finished - wait for it to complete.
968 snd_power_lock(card
->snd_card
);
969 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
970 snd_power_unlock(card
->snd_card
);
972 /* we're going to block userspace touching us until resume completes */
973 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
975 /* mute any active DAC's */
976 for (i
= 0; i
< card
->num_rtd
; i
++) {
977 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
978 struct snd_soc_dai_driver
*drv
= dai
->driver
;
980 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
983 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
984 drv
->ops
->digital_mute(dai
, 1);
987 /* suspend all pcms */
988 for (i
= 0; i
< card
->num_rtd
; i
++) {
989 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
992 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
995 if (card
->suspend_pre
)
996 card
->suspend_pre(pdev
, PMSG_SUSPEND
);
998 for (i
= 0; i
< card
->num_rtd
; i
++) {
999 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1000 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1002 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1005 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
1006 cpu_dai
->driver
->suspend(cpu_dai
);
1007 if (platform
->driver
->suspend
&& !platform
->suspended
) {
1008 platform
->driver
->suspend(cpu_dai
);
1009 platform
->suspended
= 1;
1013 /* close any waiting streams and save state */
1014 for (i
= 0; i
< card
->num_rtd
; i
++) {
1015 run_delayed_work(&card
->rtd
[i
].delayed_work
);
1016 card
->rtd
[i
].codec
->suspend_bias_level
= card
->rtd
[i
].codec
->bias_level
;
1019 for (i
= 0; i
< card
->num_rtd
; i
++) {
1020 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1022 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1025 if (driver
->playback
.stream_name
!= NULL
)
1026 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1027 SND_SOC_DAPM_STREAM_SUSPEND
);
1029 if (driver
->capture
.stream_name
!= NULL
)
1030 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1031 SND_SOC_DAPM_STREAM_SUSPEND
);
1034 /* suspend all CODECs */
1035 for (i
= 0; i
< card
->num_rtd
; i
++) {
1036 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
1037 /* If there are paths active then the CODEC will be held with
1038 * bias _ON and should not be suspended. */
1039 if (!codec
->suspended
&& codec
->driver
->suspend
) {
1040 switch (codec
->bias_level
) {
1041 case SND_SOC_BIAS_STANDBY
:
1042 case SND_SOC_BIAS_OFF
:
1043 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
1044 codec
->suspended
= 1;
1047 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
1053 for (i
= 0; i
< card
->num_rtd
; i
++) {
1054 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1056 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1059 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
1060 cpu_dai
->driver
->suspend(cpu_dai
);
1063 if (card
->suspend_post
)
1064 card
->suspend_post(pdev
, PMSG_SUSPEND
);
1069 /* deferred resume work, so resume can complete before we finished
1070 * setting our codec back up, which can be very slow on I2C
1072 static void soc_resume_deferred(struct work_struct
*work
)
1074 struct snd_soc_card
*card
=
1075 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
1076 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1079 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1080 * so userspace apps are blocked from touching us
1083 dev_dbg(card
->dev
, "starting resume work\n");
1085 /* Bring us up into D2 so that DAPM starts enabling things */
1086 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
1088 if (card
->resume_pre
)
1089 card
->resume_pre(pdev
);
1091 /* resume AC97 DAIs */
1092 for (i
= 0; i
< card
->num_rtd
; i
++) {
1093 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1095 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1098 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1099 cpu_dai
->driver
->resume(cpu_dai
);
1102 for (i
= 0; i
< card
->num_rtd
; i
++) {
1103 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
1104 /* If the CODEC was idle over suspend then it will have been
1105 * left with bias OFF or STANDBY and suspended so we must now
1106 * resume. Otherwise the suspend was suppressed.
1108 if (codec
->driver
->resume
&& codec
->suspended
) {
1109 switch (codec
->bias_level
) {
1110 case SND_SOC_BIAS_STANDBY
:
1111 case SND_SOC_BIAS_OFF
:
1112 codec
->driver
->resume(codec
);
1113 codec
->suspended
= 0;
1116 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1122 for (i
= 0; i
< card
->num_rtd
; i
++) {
1123 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1125 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1128 if (driver
->playback
.stream_name
!= NULL
)
1129 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1130 SND_SOC_DAPM_STREAM_RESUME
);
1132 if (driver
->capture
.stream_name
!= NULL
)
1133 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1134 SND_SOC_DAPM_STREAM_RESUME
);
1137 /* unmute any active DACs */
1138 for (i
= 0; i
< card
->num_rtd
; i
++) {
1139 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1140 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1142 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1145 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1146 drv
->ops
->digital_mute(dai
, 0);
1149 for (i
= 0; i
< card
->num_rtd
; i
++) {
1150 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1151 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1153 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1156 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1157 cpu_dai
->driver
->resume(cpu_dai
);
1158 if (platform
->driver
->resume
&& platform
->suspended
) {
1159 platform
->driver
->resume(cpu_dai
);
1160 platform
->suspended
= 0;
1164 if (card
->resume_post
)
1165 card
->resume_post(pdev
);
1167 dev_dbg(card
->dev
, "resume work completed\n");
1169 /* userspace can access us now we are back as we were before */
1170 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1173 /* powers up audio subsystem after a suspend */
1174 static int soc_resume(struct device
*dev
)
1176 struct platform_device
*pdev
= to_platform_device(dev
);
1177 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1180 /* AC97 devices might have other drivers hanging off them so
1181 * need to resume immediately. Other drivers don't have that
1182 * problem and may take a substantial amount of time to resume
1183 * due to I/O costs and anti-pop so handle them out of line.
1185 for (i
= 0; i
< card
->num_rtd
; i
++) {
1186 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1187 if (cpu_dai
->driver
->ac97_control
) {
1188 dev_dbg(dev
, "Resuming AC97 immediately\n");
1189 soc_resume_deferred(&card
->deferred_resume_work
);
1191 dev_dbg(dev
, "Scheduling resume work\n");
1192 if (!schedule_work(&card
->deferred_resume_work
))
1193 dev_err(dev
, "resume work item may be lost\n");
1200 #define soc_suspend NULL
1201 #define soc_resume NULL
1204 static struct snd_soc_dai_ops null_dai_ops
= {
1207 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1209 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1210 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1211 struct snd_soc_codec
*codec
;
1212 struct snd_soc_platform
*platform
;
1213 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1217 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1219 /* do we already have the CPU DAI for this link ? */
1223 /* no, then find CPU DAI from registered DAIs*/
1224 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1225 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1227 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1230 rtd
->cpu_dai
= cpu_dai
;
1234 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1235 dai_link
->cpu_dai_name
);
1238 /* do we already have the CODEC for this link ? */
1243 /* no, then find CODEC from registered CODECs*/
1244 list_for_each_entry(codec
, &codec_list
, list
) {
1245 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1248 if (!try_module_get(codec
->dev
->driver
->owner
))
1251 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1252 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1253 if (codec
->dev
== codec_dai
->dev
&&
1254 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1255 rtd
->codec_dai
= codec_dai
;
1259 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1260 dai_link
->codec_dai_name
);
1265 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1266 dai_link
->codec_name
);
1269 /* do we already have the CODEC DAI for this link ? */
1270 if (rtd
->platform
) {
1273 /* no, then find CPU DAI from registered DAIs*/
1274 list_for_each_entry(platform
, &platform_list
, list
) {
1275 if (!strcmp(platform
->name
, dai_link
->platform_name
)) {
1277 if (!try_module_get(platform
->dev
->driver
->owner
))
1280 rtd
->platform
= platform
;
1285 dev_dbg(card
->dev
, "platform %s not registered\n",
1286 dai_link
->platform_name
);
1290 /* mark rtd as complete if we found all 4 of our client devices */
1291 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1298 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1300 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1301 struct snd_soc_codec
*codec
= rtd
->codec
;
1302 struct snd_soc_platform
*platform
= rtd
->platform
;
1303 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1306 /* unregister the rtd device */
1307 if (rtd
->dev_registered
) {
1308 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1309 device_unregister(&rtd
->dev
);
1310 rtd
->dev_registered
= 0;
1313 /* remove the CODEC DAI */
1314 if (codec_dai
&& codec_dai
->probed
) {
1315 if (codec_dai
->driver
->remove
) {
1316 err
= codec_dai
->driver
->remove(codec_dai
);
1318 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1320 codec_dai
->probed
= 0;
1321 list_del(&codec_dai
->card_list
);
1324 /* remove the platform */
1325 if (platform
&& platform
->probed
) {
1326 if (platform
->driver
->remove
) {
1327 err
= platform
->driver
->remove(platform
);
1329 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1331 platform
->probed
= 0;
1332 list_del(&platform
->card_list
);
1333 module_put(platform
->dev
->driver
->owner
);
1336 /* remove the CODEC */
1337 if (codec
&& codec
->probed
) {
1338 if (codec
->driver
->remove
) {
1339 err
= codec
->driver
->remove(codec
);
1341 printk(KERN_ERR
"asoc: failed to remove %s\n", codec
->name
);
1344 /* Make sure all DAPM widgets are freed */
1345 snd_soc_dapm_free(codec
);
1347 soc_cleanup_codec_debugfs(codec
);
1348 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1350 list_del(&codec
->card_list
);
1351 module_put(codec
->dev
->driver
->owner
);
1354 /* remove the cpu_dai */
1355 if (cpu_dai
&& cpu_dai
->probed
) {
1356 if (cpu_dai
->driver
->remove
) {
1357 err
= cpu_dai
->driver
->remove(cpu_dai
);
1359 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1361 cpu_dai
->probed
= 0;
1362 list_del(&cpu_dai
->card_list
);
1363 module_put(cpu_dai
->dev
->driver
->owner
);
1367 static void rtd_release(struct device
*dev
) {}
1369 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1371 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1372 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1373 struct snd_soc_codec
*codec
= rtd
->codec
;
1374 struct snd_soc_platform
*platform
= rtd
->platform
;
1375 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1378 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1380 /* config components */
1381 codec_dai
->codec
= codec
;
1383 cpu_dai
->platform
= platform
;
1385 rtd
->dev
.parent
= card
->dev
;
1386 codec_dai
->card
= card
;
1387 cpu_dai
->card
= card
;
1389 /* set default power off timeout */
1390 rtd
->pmdown_time
= pmdown_time
;
1392 /* probe the cpu_dai */
1393 if (!cpu_dai
->probed
) {
1394 if (cpu_dai
->driver
->probe
) {
1395 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1397 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1402 cpu_dai
->probed
= 1;
1403 /* mark cpu_dai as probed and add to card cpu_dai list */
1404 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1407 /* probe the CODEC */
1408 if (!codec
->probed
) {
1409 if (codec
->driver
->probe
) {
1410 ret
= codec
->driver
->probe(codec
);
1412 printk(KERN_ERR
"asoc: failed to probe CODEC %s\n",
1418 soc_init_codec_debugfs(codec
);
1420 /* mark codec as probed and add to card codec list */
1422 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1425 /* probe the platform */
1426 if (!platform
->probed
) {
1427 if (platform
->driver
->probe
) {
1428 ret
= platform
->driver
->probe(platform
);
1430 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1435 /* mark platform as probed and add to card platform list */
1436 platform
->probed
= 1;
1437 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1440 /* probe the CODEC DAI */
1441 if (!codec_dai
->probed
) {
1442 if (codec_dai
->driver
->probe
) {
1443 ret
= codec_dai
->driver
->probe(codec_dai
);
1445 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1451 /* mark cpu_dai as probed and add to card cpu_dai list */
1452 codec_dai
->probed
= 1;
1453 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1456 /* DAPM dai link stream work */
1457 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1459 /* now that all clients have probed, initialise the DAI link */
1460 if (dai_link
->init
) {
1461 ret
= dai_link
->init(rtd
);
1463 printk(KERN_ERR
"asoc: failed to init %s\n", dai_link
->stream_name
);
1468 /* Make sure all DAPM widgets are instantiated */
1469 snd_soc_dapm_new_widgets(codec
);
1470 snd_soc_dapm_sync(codec
);
1472 /* register the rtd device */
1473 rtd
->dev
.release
= rtd_release
;
1474 rtd
->dev
.init_name
= dai_link
->name
;
1475 ret
= device_register(&rtd
->dev
);
1477 printk(KERN_ERR
"asoc: failed to register DAI runtime device %d\n", ret
);
1481 rtd
->dev_registered
= 1;
1482 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1484 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1486 /* add DAPM sysfs entries for this codec */
1487 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1489 printk(KERN_WARNING
"asoc: failed to add codec dapm sysfs entries\n");
1491 /* add codec sysfs entries */
1492 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1494 printk(KERN_WARNING
"asoc: failed to add codec sysfs files\n");
1496 /* create the pcm */
1497 ret
= soc_new_pcm(rtd
, num
);
1499 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1503 /* add platform data for AC97 devices */
1504 if (rtd
->codec_dai
->driver
->ac97_control
)
1505 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1510 #ifdef CONFIG_SND_SOC_AC97_BUS
1511 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1515 /* Only instantiate AC97 if not already done by the adaptor
1516 * for the generic AC97 subsystem.
1518 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1520 * It is possible that the AC97 device is already registered to
1521 * the device subsystem. This happens when the device is created
1522 * via snd_ac97_mixer(). Currently only SoC codec that does so
1523 * is the generic AC97 glue but others migh emerge.
1525 * In those cases we don't try to register the device again.
1527 if (!rtd
->codec
->ac97_created
)
1530 ret
= soc_ac97_dev_register(rtd
->codec
);
1532 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1536 rtd
->codec
->ac97_registered
= 1;
1541 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1543 if (codec
->ac97_registered
) {
1544 soc_ac97_dev_unregister(codec
);
1545 codec
->ac97_registered
= 0;
1550 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1552 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1555 mutex_lock(&card
->mutex
);
1557 if (card
->instantiated
) {
1558 mutex_unlock(&card
->mutex
);
1563 for (i
= 0; i
< card
->num_links
; i
++)
1564 soc_bind_dai_link(card
, i
);
1566 /* bind completed ? */
1567 if (card
->num_rtd
!= card
->num_links
) {
1568 mutex_unlock(&card
->mutex
);
1572 /* card bind complete so register a sound card */
1573 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1574 card
->owner
, 0, &card
->snd_card
);
1576 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1578 mutex_unlock(&card
->mutex
);
1581 card
->snd_card
->dev
= card
->dev
;
1584 /* deferred resume work */
1585 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1588 /* initialise the sound card only once */
1590 ret
= card
->probe(pdev
);
1592 goto card_probe_error
;
1595 for (i
= 0; i
< card
->num_links
; i
++) {
1596 ret
= soc_probe_dai_link(card
, i
);
1598 pr_err("asoc: failed to instantiate card %s: %d\n",
1604 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1606 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1609 ret
= snd_card_register(card
->snd_card
);
1611 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1615 #ifdef CONFIG_SND_SOC_AC97_BUS
1616 /* register any AC97 codecs */
1617 for (i
= 0; i
< card
->num_rtd
; i
++) {
1618 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1620 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1626 card
->instantiated
= 1;
1627 mutex_unlock(&card
->mutex
);
1631 for (i
= 0; i
< card
->num_links
; i
++)
1632 soc_remove_dai_link(card
, i
);
1638 snd_card_free(card
->snd_card
);
1640 mutex_unlock(&card
->mutex
);
1644 * Attempt to initialise any uninitialised cards. Must be called with
1647 static void snd_soc_instantiate_cards(void)
1649 struct snd_soc_card
*card
;
1650 list_for_each_entry(card
, &card_list
, list
)
1651 snd_soc_instantiate_card(card
);
1654 /* probes a new socdev */
1655 static int soc_probe(struct platform_device
*pdev
)
1657 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1660 /* Bodge while we unpick instantiation */
1661 card
->dev
= &pdev
->dev
;
1662 INIT_LIST_HEAD(&card
->dai_dev_list
);
1663 INIT_LIST_HEAD(&card
->codec_dev_list
);
1664 INIT_LIST_HEAD(&card
->platform_dev_list
);
1666 ret
= snd_soc_register_card(card
);
1668 dev_err(&pdev
->dev
, "Failed to register card\n");
1675 /* removes a socdev */
1676 static int soc_remove(struct platform_device
*pdev
)
1678 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1681 if (card
->instantiated
) {
1683 /* make sure any delayed work runs */
1684 for (i
= 0; i
< card
->num_rtd
; i
++) {
1685 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1686 run_delayed_work(&rtd
->delayed_work
);
1689 /* remove and free each DAI */
1690 for (i
= 0; i
< card
->num_rtd
; i
++)
1691 soc_remove_dai_link(card
, i
);
1693 /* remove the card */
1698 snd_card_free(card
->snd_card
);
1700 snd_soc_unregister_card(card
);
1704 static int soc_poweroff(struct device
*dev
)
1706 struct platform_device
*pdev
= to_platform_device(dev
);
1707 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1710 if (!card
->instantiated
)
1713 /* Flush out pmdown_time work - we actually do want to run it
1714 * now, we're shutting down so no imminent restart. */
1715 for (i
= 0; i
< card
->num_rtd
; i
++) {
1716 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1717 run_delayed_work(&rtd
->delayed_work
);
1720 snd_soc_dapm_shutdown(card
);
1725 static const struct dev_pm_ops soc_pm_ops
= {
1726 .suspend
= soc_suspend
,
1727 .resume
= soc_resume
,
1728 .poweroff
= soc_poweroff
,
1731 /* ASoC platform driver */
1732 static struct platform_driver soc_driver
= {
1734 .name
= "soc-audio",
1735 .owner
= THIS_MODULE
,
1739 .remove
= soc_remove
,
1742 /* create a new pcm */
1743 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
1745 struct snd_soc_codec
*codec
= rtd
->codec
;
1746 struct snd_soc_platform
*platform
= rtd
->platform
;
1747 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1748 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1749 struct snd_pcm
*pcm
;
1751 int ret
= 0, playback
= 0, capture
= 0;
1753 /* check client and interface hw capabilities */
1754 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
1755 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
1757 if (codec_dai
->driver
->playback
.channels_min
)
1759 if (codec_dai
->driver
->capture
.channels_min
)
1762 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
1763 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
1764 num
, playback
, capture
, &pcm
);
1766 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
1771 pcm
->private_data
= rtd
;
1772 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
1773 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
1774 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
1775 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
1776 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
1777 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
1778 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
1781 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
1784 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
1786 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
, codec_dai
, pcm
);
1788 printk(KERN_ERR
"asoc: platform pcm constructor failed\n");
1792 pcm
->private_free
= platform
->driver
->pcm_free
;
1793 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
1799 * snd_soc_codec_volatile_register: Report if a register is volatile.
1801 * @codec: CODEC to query.
1802 * @reg: Register to query.
1804 * Boolean function indiciating if a CODEC register is volatile.
1806 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
, int reg
)
1808 if (codec
->driver
->volatile_register
)
1809 return codec
->driver
->volatile_register(reg
);
1813 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1816 * snd_soc_new_ac97_codec - initailise AC97 device
1817 * @codec: audio codec
1818 * @ops: AC97 bus operations
1819 * @num: AC97 codec number
1821 * Initialises AC97 codec resources for use by ad-hoc devices only.
1823 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1824 struct snd_ac97_bus_ops
*ops
, int num
)
1826 mutex_lock(&codec
->mutex
);
1828 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1829 if (codec
->ac97
== NULL
) {
1830 mutex_unlock(&codec
->mutex
);
1834 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1835 if (codec
->ac97
->bus
== NULL
) {
1838 mutex_unlock(&codec
->mutex
);
1842 codec
->ac97
->bus
->ops
= ops
;
1843 codec
->ac97
->num
= num
;
1846 * Mark the AC97 device to be created by us. This way we ensure that the
1847 * device will be registered with the device subsystem later on.
1849 codec
->ac97_created
= 1;
1851 mutex_unlock(&codec
->mutex
);
1854 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1857 * snd_soc_free_ac97_codec - free AC97 codec device
1858 * @codec: audio codec
1860 * Frees AC97 codec device resources.
1862 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1864 mutex_lock(&codec
->mutex
);
1865 #ifdef CONFIG_SND_SOC_AC97_BUS
1866 soc_unregister_ac97_dai_link(codec
);
1868 kfree(codec
->ac97
->bus
);
1871 codec
->ac97_created
= 0;
1872 mutex_unlock(&codec
->mutex
);
1874 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1877 * snd_soc_update_bits - update codec register bits
1878 * @codec: audio codec
1879 * @reg: codec register
1880 * @mask: register mask
1883 * Writes new register value.
1885 * Returns 1 for change else 0.
1887 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1888 unsigned int mask
, unsigned int value
)
1891 unsigned int old
, new;
1893 old
= snd_soc_read(codec
, reg
);
1894 new = (old
& ~mask
) | value
;
1895 change
= old
!= new;
1897 snd_soc_write(codec
, reg
, new);
1901 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1904 * snd_soc_update_bits_locked - update codec register bits
1905 * @codec: audio codec
1906 * @reg: codec register
1907 * @mask: register mask
1910 * Writes new register value, and takes the codec mutex.
1912 * Returns 1 for change else 0.
1914 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1915 unsigned short reg
, unsigned int mask
,
1920 mutex_lock(&codec
->mutex
);
1921 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1922 mutex_unlock(&codec
->mutex
);
1926 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1929 * snd_soc_test_bits - test register for change
1930 * @codec: audio codec
1931 * @reg: codec register
1932 * @mask: register mask
1935 * Tests a register with a new value and checks if the new value is
1936 * different from the old value.
1938 * Returns 1 for change else 0.
1940 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1941 unsigned int mask
, unsigned int value
)
1944 unsigned int old
, new;
1946 old
= snd_soc_read(codec
, reg
);
1947 new = (old
& ~mask
) | value
;
1948 change
= old
!= new;
1952 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1955 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1956 * @substream: the pcm substream
1957 * @hw: the hardware parameters
1959 * Sets the substream runtime hardware parameters.
1961 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1962 const struct snd_pcm_hardware
*hw
)
1964 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1965 runtime
->hw
.info
= hw
->info
;
1966 runtime
->hw
.formats
= hw
->formats
;
1967 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1968 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1969 runtime
->hw
.periods_min
= hw
->periods_min
;
1970 runtime
->hw
.periods_max
= hw
->periods_max
;
1971 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1972 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1975 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1978 * snd_soc_cnew - create new control
1979 * @_template: control template
1980 * @data: control private data
1981 * @long_name: control long name
1983 * Create a new mixer control from a template control.
1985 * Returns 0 for success, else error.
1987 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1988 void *data
, char *long_name
)
1990 struct snd_kcontrol_new
template;
1992 memcpy(&template, _template
, sizeof(template));
1994 template.name
= long_name
;
1997 return snd_ctl_new1(&template, data
);
1999 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2002 * snd_soc_add_controls - add an array of controls to a codec.
2003 * Convienience function to add a list of controls. Many codecs were
2004 * duplicating this code.
2006 * @codec: codec to add controls to
2007 * @controls: array of controls to add
2008 * @num_controls: number of elements in the array
2010 * Return 0 for success, else error.
2012 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2013 const struct snd_kcontrol_new
*controls
, int num_controls
)
2015 struct snd_card
*card
= codec
->card
->snd_card
;
2018 for (i
= 0; i
< num_controls
; i
++) {
2019 const struct snd_kcontrol_new
*control
= &controls
[i
];
2020 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
, NULL
));
2022 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2023 codec
->name
, control
->name
, err
);
2030 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2033 * snd_soc_info_enum_double - enumerated double mixer info callback
2034 * @kcontrol: mixer control
2035 * @uinfo: control element information
2037 * Callback to provide information about a double enumerated
2040 * Returns 0 for success.
2042 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2043 struct snd_ctl_elem_info
*uinfo
)
2045 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2047 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2048 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2049 uinfo
->value
.enumerated
.items
= e
->max
;
2051 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2052 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2053 strcpy(uinfo
->value
.enumerated
.name
,
2054 e
->texts
[uinfo
->value
.enumerated
.item
]);
2057 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2060 * snd_soc_get_enum_double - enumerated double mixer get callback
2061 * @kcontrol: mixer control
2062 * @ucontrol: control element information
2064 * Callback to get the value of a double enumerated mixer.
2066 * Returns 0 for success.
2068 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2069 struct snd_ctl_elem_value
*ucontrol
)
2071 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2072 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2073 unsigned int val
, bitmask
;
2075 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2077 val
= snd_soc_read(codec
, e
->reg
);
2078 ucontrol
->value
.enumerated
.item
[0]
2079 = (val
>> e
->shift_l
) & (bitmask
- 1);
2080 if (e
->shift_l
!= e
->shift_r
)
2081 ucontrol
->value
.enumerated
.item
[1] =
2082 (val
>> e
->shift_r
) & (bitmask
- 1);
2086 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2089 * snd_soc_put_enum_double - enumerated double mixer put callback
2090 * @kcontrol: mixer control
2091 * @ucontrol: control element information
2093 * Callback to set the value of a double enumerated mixer.
2095 * Returns 0 for success.
2097 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2098 struct snd_ctl_elem_value
*ucontrol
)
2100 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2101 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2103 unsigned int mask
, bitmask
;
2105 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2107 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2109 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2110 mask
= (bitmask
- 1) << e
->shift_l
;
2111 if (e
->shift_l
!= e
->shift_r
) {
2112 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2114 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2115 mask
|= (bitmask
- 1) << e
->shift_r
;
2118 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2120 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2123 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2124 * @kcontrol: mixer control
2125 * @ucontrol: control element information
2127 * Callback to get the value of a double semi enumerated mixer.
2129 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2130 * used for handling bitfield coded enumeration for example.
2132 * Returns 0 for success.
2134 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2135 struct snd_ctl_elem_value
*ucontrol
)
2137 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2138 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2139 unsigned int reg_val
, val
, mux
;
2141 reg_val
= snd_soc_read(codec
, e
->reg
);
2142 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2143 for (mux
= 0; mux
< e
->max
; mux
++) {
2144 if (val
== e
->values
[mux
])
2147 ucontrol
->value
.enumerated
.item
[0] = mux
;
2148 if (e
->shift_l
!= e
->shift_r
) {
2149 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2150 for (mux
= 0; mux
< e
->max
; mux
++) {
2151 if (val
== e
->values
[mux
])
2154 ucontrol
->value
.enumerated
.item
[1] = mux
;
2159 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2162 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2163 * @kcontrol: mixer control
2164 * @ucontrol: control element information
2166 * Callback to set the value of a double semi enumerated mixer.
2168 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2169 * used for handling bitfield coded enumeration for example.
2171 * Returns 0 for success.
2173 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2174 struct snd_ctl_elem_value
*ucontrol
)
2176 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2177 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2181 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2183 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2184 mask
= e
->mask
<< e
->shift_l
;
2185 if (e
->shift_l
!= e
->shift_r
) {
2186 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2188 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2189 mask
|= e
->mask
<< e
->shift_r
;
2192 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2194 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2197 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2198 * @kcontrol: mixer control
2199 * @uinfo: control element information
2201 * Callback to provide information about an external enumerated
2204 * Returns 0 for success.
2206 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2207 struct snd_ctl_elem_info
*uinfo
)
2209 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2211 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2213 uinfo
->value
.enumerated
.items
= e
->max
;
2215 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2216 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2217 strcpy(uinfo
->value
.enumerated
.name
,
2218 e
->texts
[uinfo
->value
.enumerated
.item
]);
2221 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2224 * snd_soc_info_volsw_ext - external single mixer info callback
2225 * @kcontrol: mixer control
2226 * @uinfo: control element information
2228 * Callback to provide information about a single external mixer control.
2230 * Returns 0 for success.
2232 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2233 struct snd_ctl_elem_info
*uinfo
)
2235 int max
= kcontrol
->private_value
;
2237 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2238 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2240 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2243 uinfo
->value
.integer
.min
= 0;
2244 uinfo
->value
.integer
.max
= max
;
2247 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2250 * snd_soc_info_volsw - single mixer info callback
2251 * @kcontrol: mixer control
2252 * @uinfo: control element information
2254 * Callback to provide information about a single mixer control.
2256 * Returns 0 for success.
2258 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2259 struct snd_ctl_elem_info
*uinfo
)
2261 struct soc_mixer_control
*mc
=
2262 (struct soc_mixer_control
*)kcontrol
->private_value
;
2264 unsigned int shift
= mc
->shift
;
2265 unsigned int rshift
= mc
->rshift
;
2267 if (!mc
->platform_max
)
2268 mc
->platform_max
= mc
->max
;
2269 platform_max
= mc
->platform_max
;
2271 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2272 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2274 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2276 uinfo
->count
= shift
== rshift
? 1 : 2;
2277 uinfo
->value
.integer
.min
= 0;
2278 uinfo
->value
.integer
.max
= platform_max
;
2281 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2284 * snd_soc_get_volsw - single mixer get callback
2285 * @kcontrol: mixer control
2286 * @ucontrol: control element information
2288 * Callback to get the value of a single mixer control.
2290 * Returns 0 for success.
2292 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2293 struct snd_ctl_elem_value
*ucontrol
)
2295 struct soc_mixer_control
*mc
=
2296 (struct soc_mixer_control
*)kcontrol
->private_value
;
2297 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2298 unsigned int reg
= mc
->reg
;
2299 unsigned int shift
= mc
->shift
;
2300 unsigned int rshift
= mc
->rshift
;
2302 unsigned int mask
= (1 << fls(max
)) - 1;
2303 unsigned int invert
= mc
->invert
;
2305 ucontrol
->value
.integer
.value
[0] =
2306 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2307 if (shift
!= rshift
)
2308 ucontrol
->value
.integer
.value
[1] =
2309 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2311 ucontrol
->value
.integer
.value
[0] =
2312 max
- ucontrol
->value
.integer
.value
[0];
2313 if (shift
!= rshift
)
2314 ucontrol
->value
.integer
.value
[1] =
2315 max
- ucontrol
->value
.integer
.value
[1];
2320 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2323 * snd_soc_put_volsw - single mixer put callback
2324 * @kcontrol: mixer control
2325 * @ucontrol: control element information
2327 * Callback to set the value of a single mixer control.
2329 * Returns 0 for success.
2331 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2332 struct snd_ctl_elem_value
*ucontrol
)
2334 struct soc_mixer_control
*mc
=
2335 (struct soc_mixer_control
*)kcontrol
->private_value
;
2336 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2337 unsigned int reg
= mc
->reg
;
2338 unsigned int shift
= mc
->shift
;
2339 unsigned int rshift
= mc
->rshift
;
2341 unsigned int mask
= (1 << fls(max
)) - 1;
2342 unsigned int invert
= mc
->invert
;
2343 unsigned int val
, val2
, val_mask
;
2345 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2348 val_mask
= mask
<< shift
;
2350 if (shift
!= rshift
) {
2351 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2354 val_mask
|= mask
<< rshift
;
2355 val
|= val2
<< rshift
;
2357 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2359 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2362 * snd_soc_info_volsw_2r - double mixer info callback
2363 * @kcontrol: mixer control
2364 * @uinfo: control element information
2366 * Callback to provide information about a double mixer control that
2367 * spans 2 codec registers.
2369 * Returns 0 for success.
2371 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2372 struct snd_ctl_elem_info
*uinfo
)
2374 struct soc_mixer_control
*mc
=
2375 (struct soc_mixer_control
*)kcontrol
->private_value
;
2378 if (!mc
->platform_max
)
2379 mc
->platform_max
= mc
->max
;
2380 platform_max
= mc
->platform_max
;
2382 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2383 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2385 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2388 uinfo
->value
.integer
.min
= 0;
2389 uinfo
->value
.integer
.max
= platform_max
;
2392 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2395 * snd_soc_get_volsw_2r - double mixer get callback
2396 * @kcontrol: mixer control
2397 * @ucontrol: control element information
2399 * Callback to get the value of a double mixer control that spans 2 registers.
2401 * Returns 0 for success.
2403 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2404 struct snd_ctl_elem_value
*ucontrol
)
2406 struct soc_mixer_control
*mc
=
2407 (struct soc_mixer_control
*)kcontrol
->private_value
;
2408 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2409 unsigned int reg
= mc
->reg
;
2410 unsigned int reg2
= mc
->rreg
;
2411 unsigned int shift
= mc
->shift
;
2413 unsigned int mask
= (1 << fls(max
)) - 1;
2414 unsigned int invert
= mc
->invert
;
2416 ucontrol
->value
.integer
.value
[0] =
2417 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2418 ucontrol
->value
.integer
.value
[1] =
2419 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2421 ucontrol
->value
.integer
.value
[0] =
2422 max
- ucontrol
->value
.integer
.value
[0];
2423 ucontrol
->value
.integer
.value
[1] =
2424 max
- ucontrol
->value
.integer
.value
[1];
2429 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2432 * snd_soc_put_volsw_2r - double mixer set callback
2433 * @kcontrol: mixer control
2434 * @ucontrol: control element information
2436 * Callback to set the value of a double mixer control that spans 2 registers.
2438 * Returns 0 for success.
2440 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2441 struct snd_ctl_elem_value
*ucontrol
)
2443 struct soc_mixer_control
*mc
=
2444 (struct soc_mixer_control
*)kcontrol
->private_value
;
2445 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2446 unsigned int reg
= mc
->reg
;
2447 unsigned int reg2
= mc
->rreg
;
2448 unsigned int shift
= mc
->shift
;
2450 unsigned int mask
= (1 << fls(max
)) - 1;
2451 unsigned int invert
= mc
->invert
;
2453 unsigned int val
, val2
, val_mask
;
2455 val_mask
= mask
<< shift
;
2456 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2457 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2465 val2
= val2
<< shift
;
2467 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2471 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2474 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2477 * snd_soc_info_volsw_s8 - signed mixer info callback
2478 * @kcontrol: mixer control
2479 * @uinfo: control element information
2481 * Callback to provide information about a signed mixer control.
2483 * Returns 0 for success.
2485 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2486 struct snd_ctl_elem_info
*uinfo
)
2488 struct soc_mixer_control
*mc
=
2489 (struct soc_mixer_control
*)kcontrol
->private_value
;
2493 if (!mc
->platform_max
)
2494 mc
->platform_max
= mc
->max
;
2495 platform_max
= mc
->platform_max
;
2497 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2499 uinfo
->value
.integer
.min
= 0;
2500 uinfo
->value
.integer
.max
= platform_max
- min
;
2503 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2506 * snd_soc_get_volsw_s8 - signed mixer get callback
2507 * @kcontrol: mixer control
2508 * @ucontrol: control element information
2510 * Callback to get the value of a signed mixer control.
2512 * Returns 0 for success.
2514 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2515 struct snd_ctl_elem_value
*ucontrol
)
2517 struct soc_mixer_control
*mc
=
2518 (struct soc_mixer_control
*)kcontrol
->private_value
;
2519 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2520 unsigned int reg
= mc
->reg
;
2522 int val
= snd_soc_read(codec
, reg
);
2524 ucontrol
->value
.integer
.value
[0] =
2525 ((signed char)(val
& 0xff))-min
;
2526 ucontrol
->value
.integer
.value
[1] =
2527 ((signed char)((val
>> 8) & 0xff))-min
;
2530 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2533 * snd_soc_put_volsw_sgn - signed mixer put callback
2534 * @kcontrol: mixer control
2535 * @ucontrol: control element information
2537 * Callback to set the value of a signed mixer control.
2539 * Returns 0 for success.
2541 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2542 struct snd_ctl_elem_value
*ucontrol
)
2544 struct soc_mixer_control
*mc
=
2545 (struct soc_mixer_control
*)kcontrol
->private_value
;
2546 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2547 unsigned int reg
= mc
->reg
;
2551 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2552 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2554 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2556 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2559 * snd_soc_limit_volume - Set new limit to an existing volume control.
2561 * @codec: where to look for the control
2562 * @name: Name of the control
2563 * @max: new maximum limit
2565 * Return 0 for success, else error.
2567 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2568 const char *name
, int max
)
2570 struct snd_card
*card
= codec
->card
->snd_card
;
2571 struct snd_kcontrol
*kctl
;
2572 struct soc_mixer_control
*mc
;
2576 /* Sanity check for name and max */
2577 if (unlikely(!name
|| max
<= 0))
2580 list_for_each_entry(kctl
, &card
->controls
, list
) {
2581 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2587 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2588 if (max
<= mc
->max
) {
2589 mc
->platform_max
= max
;
2595 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2598 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2599 * mixer info callback
2600 * @kcontrol: mixer control
2601 * @uinfo: control element information
2603 * Returns 0 for success.
2605 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2606 struct snd_ctl_elem_info
*uinfo
)
2608 struct soc_mixer_control
*mc
=
2609 (struct soc_mixer_control
*)kcontrol
->private_value
;
2613 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2615 uinfo
->value
.integer
.min
= 0;
2616 uinfo
->value
.integer
.max
= max
-min
;
2620 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2623 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2624 * mixer get callback
2625 * @kcontrol: mixer control
2626 * @uinfo: control element information
2628 * Returns 0 for success.
2630 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2631 struct snd_ctl_elem_value
*ucontrol
)
2633 struct soc_mixer_control
*mc
=
2634 (struct soc_mixer_control
*)kcontrol
->private_value
;
2635 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2636 unsigned int mask
= (1<<mc
->shift
)-1;
2638 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2639 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2641 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2642 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2645 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2648 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2649 * mixer put callback
2650 * @kcontrol: mixer control
2651 * @uinfo: control element information
2653 * Returns 0 for success.
2655 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2656 struct snd_ctl_elem_value
*ucontrol
)
2658 struct soc_mixer_control
*mc
=
2659 (struct soc_mixer_control
*)kcontrol
->private_value
;
2660 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2661 unsigned int mask
= (1<<mc
->shift
)-1;
2664 unsigned int val
, valr
, oval
, ovalr
;
2666 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2668 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2671 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2672 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2676 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2680 if (ovalr
!= valr
) {
2681 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2688 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2691 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2693 * @clk_id: DAI specific clock ID
2694 * @freq: new clock frequency in Hz
2695 * @dir: new clock direction - input/output.
2697 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2699 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2700 unsigned int freq
, int dir
)
2702 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2703 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2707 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2710 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2712 * @div_id: DAI specific clock divider ID
2713 * @div: new clock divisor.
2715 * Configures the clock dividers. This is used to derive the best DAI bit and
2716 * frame clocks from the system or master clock. It's best to set the DAI bit
2717 * and frame clocks as low as possible to save system power.
2719 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2720 int div_id
, int div
)
2722 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2723 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2727 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2730 * snd_soc_dai_set_pll - configure DAI PLL.
2732 * @pll_id: DAI specific PLL ID
2733 * @source: DAI specific source for the PLL
2734 * @freq_in: PLL input clock frequency in Hz
2735 * @freq_out: requested PLL output clock frequency in Hz
2737 * Configures and enables PLL to generate output clock based on input clock.
2739 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2740 unsigned int freq_in
, unsigned int freq_out
)
2742 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2743 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2748 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2751 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2753 * @fmt: SND_SOC_DAIFMT_ format value.
2755 * Configures the DAI hardware format and clocking.
2757 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2759 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2760 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2764 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2767 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2769 * @tx_mask: bitmask representing active TX slots.
2770 * @rx_mask: bitmask representing active RX slots.
2771 * @slots: Number of slots in use.
2772 * @slot_width: Width in bits for each slot.
2774 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2777 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2778 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2780 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2781 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2786 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2789 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2791 * @tx_num: how many TX channels
2792 * @tx_slot: pointer to an array which imply the TX slot number channel
2794 * @rx_num: how many RX channels
2795 * @rx_slot: pointer to an array which imply the RX slot number channel
2798 * configure the relationship between channel number and TDM slot number.
2800 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2801 unsigned int tx_num
, unsigned int *tx_slot
,
2802 unsigned int rx_num
, unsigned int *rx_slot
)
2804 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2805 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2810 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2813 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2815 * @tristate: tristate enable
2817 * Tristates the DAI so that others can use it.
2819 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2821 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2822 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2826 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2829 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2831 * @mute: mute enable
2833 * Mutes the DAI DAC.
2835 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2837 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2838 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2842 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2845 * snd_soc_register_card - Register a card with the ASoC core
2847 * @card: Card to register
2849 * Note that currently this is an internal only function: it will be
2850 * exposed to machine drivers after further backporting of ASoC v2
2851 * registration APIs.
2853 static int snd_soc_register_card(struct snd_soc_card
*card
)
2857 if (!card
->name
|| !card
->dev
)
2860 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) * card
->num_links
,
2862 if (card
->rtd
== NULL
)
2865 for (i
= 0; i
< card
->num_links
; i
++)
2866 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2868 INIT_LIST_HEAD(&card
->list
);
2869 card
->instantiated
= 0;
2870 mutex_init(&card
->mutex
);
2872 mutex_lock(&client_mutex
);
2873 list_add(&card
->list
, &card_list
);
2874 snd_soc_instantiate_cards();
2875 mutex_unlock(&client_mutex
);
2877 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2883 * snd_soc_unregister_card - Unregister a card with the ASoC core
2885 * @card: Card to unregister
2887 * Note that currently this is an internal only function: it will be
2888 * exposed to machine drivers after further backporting of ASoC v2
2889 * registration APIs.
2891 static int snd_soc_unregister_card(struct snd_soc_card
*card
)
2893 mutex_lock(&client_mutex
);
2894 list_del(&card
->list
);
2895 mutex_unlock(&client_mutex
);
2896 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2902 * Simplify DAI link configuration by removing ".-1" from device names
2903 * and sanitizing names.
2905 static inline char *fmt_single_name(struct device
*dev
, int *id
)
2907 char *found
, name
[NAME_SIZE
];
2910 if (dev_name(dev
) == NULL
)
2913 strncpy(name
, dev_name(dev
), NAME_SIZE
);
2915 /* are we a "%s.%d" name (platform and SPI components) */
2916 found
= strstr(name
, dev
->driver
->name
);
2919 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2921 /* discard ID from name if ID == -1 */
2923 found
[strlen(dev
->driver
->name
)] = '\0';
2927 /* I2C component devices are named "bus-addr" */
2928 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2929 char tmp
[NAME_SIZE
];
2931 /* create unique ID number from I2C addr and bus */
2932 *id
= ((id1
&& 0xffff) << 16) + id2
;
2934 /* sanitize component name for DAI link creation */
2935 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2936 strncpy(name
, tmp
, NAME_SIZE
);
2941 return kstrdup(name
, GFP_KERNEL
);
2945 * Simplify DAI link naming for single devices with multiple DAIs by removing
2946 * any ".-1" and using the DAI name (instead of device name).
2948 static inline char *fmt_multiple_name(struct device
*dev
,
2949 struct snd_soc_dai_driver
*dai_drv
)
2951 if (dai_drv
->name
== NULL
) {
2952 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2957 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2961 * snd_soc_register_dai - Register a DAI with the ASoC core
2963 * @dai: DAI to register
2965 int snd_soc_register_dai(struct device
*dev
,
2966 struct snd_soc_dai_driver
*dai_drv
)
2968 struct snd_soc_dai
*dai
;
2970 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
2972 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2976 /* create DAI component name */
2977 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2978 if (dai
->name
== NULL
) {
2984 dai
->driver
= dai_drv
;
2985 if (!dai
->driver
->ops
)
2986 dai
->driver
->ops
= &null_dai_ops
;
2988 mutex_lock(&client_mutex
);
2989 list_add(&dai
->list
, &dai_list
);
2990 snd_soc_instantiate_cards();
2991 mutex_unlock(&client_mutex
);
2993 pr_debug("Registered DAI '%s'\n", dai
->name
);
2997 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3000 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3002 * @dai: DAI to unregister
3004 void snd_soc_unregister_dai(struct device
*dev
)
3006 struct snd_soc_dai
*dai
;
3008 list_for_each_entry(dai
, &dai_list
, list
) {
3009 if (dev
== dai
->dev
)
3015 mutex_lock(&client_mutex
);
3016 list_del(&dai
->list
);
3017 mutex_unlock(&client_mutex
);
3019 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3023 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3026 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3028 * @dai: Array of DAIs to register
3029 * @count: Number of DAIs
3031 int snd_soc_register_dais(struct device
*dev
,
3032 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3034 struct snd_soc_dai
*dai
;
3037 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3039 for (i
= 0; i
< count
; i
++) {
3041 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3045 /* create DAI component name */
3046 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3047 if (dai
->name
== NULL
) {
3055 dai
->driver
= &dai_drv
[i
];
3056 if (!dai
->driver
->ops
)
3057 dai
->driver
->ops
= &null_dai_ops
;
3059 mutex_lock(&client_mutex
);
3060 list_add(&dai
->list
, &dai_list
);
3061 mutex_unlock(&client_mutex
);
3063 pr_debug("Registered DAI '%s'\n", dai
->name
);
3066 snd_soc_instantiate_cards();
3070 for (i
--; i
>= 0; i
--)
3071 snd_soc_unregister_dai(dev
);
3075 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3078 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3080 * @dai: Array of DAIs to unregister
3081 * @count: Number of DAIs
3083 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3087 for (i
= 0; i
< count
; i
++)
3088 snd_soc_unregister_dai(dev
);
3090 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3093 * snd_soc_register_platform - Register a platform with the ASoC core
3095 * @platform: platform to register
3097 int snd_soc_register_platform(struct device
*dev
,
3098 struct snd_soc_platform_driver
*platform_drv
)
3100 struct snd_soc_platform
*platform
;
3102 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3104 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3105 if (platform
== NULL
)
3108 /* create platform component name */
3109 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3110 if (platform
->name
== NULL
) {
3115 platform
->dev
= dev
;
3116 platform
->driver
= platform_drv
;
3118 mutex_lock(&client_mutex
);
3119 list_add(&platform
->list
, &platform_list
);
3120 snd_soc_instantiate_cards();
3121 mutex_unlock(&client_mutex
);
3123 pr_debug("Registered platform '%s'\n", platform
->name
);
3127 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3130 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3132 * @platform: platform to unregister
3134 void snd_soc_unregister_platform(struct device
*dev
)
3136 struct snd_soc_platform
*platform
;
3138 list_for_each_entry(platform
, &platform_list
, list
) {
3139 if (dev
== platform
->dev
)
3145 mutex_lock(&client_mutex
);
3146 list_del(&platform
->list
);
3147 mutex_unlock(&client_mutex
);
3149 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3150 kfree(platform
->name
);
3153 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3155 static u64 codec_format_map
[] = {
3156 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3157 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3158 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3159 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3160 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3161 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3162 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3163 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3164 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3165 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3166 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3167 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3168 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3169 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3170 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3171 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3174 /* Fix up the DAI formats for endianness: codecs don't actually see
3175 * the endianness of the data but we're using the CPU format
3176 * definitions which do need to include endianness so we ensure that
3177 * codec DAIs always have both big and little endian variants set.
3179 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3183 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3184 if (stream
->formats
& codec_format_map
[i
])
3185 stream
->formats
|= codec_format_map
[i
];
3189 * snd_soc_register_codec - Register a codec with the ASoC core
3191 * @codec: codec to register
3193 int snd_soc_register_codec(struct device
*dev
,
3194 struct snd_soc_codec_driver
*codec_drv
,
3195 struct snd_soc_dai_driver
*dai_drv
, int num_dai
)
3197 struct snd_soc_codec
*codec
;
3200 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3202 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3206 /* create CODEC component name */
3207 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3208 if (codec
->name
== NULL
) {
3213 /* allocate CODEC register cache */
3214 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3216 if (codec_drv
->reg_cache_default
)
3217 codec
->reg_cache
= kmemdup(codec_drv
->reg_cache_default
,
3218 codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
, GFP_KERNEL
);
3220 codec
->reg_cache
= kzalloc(codec_drv
->reg_cache_size
*
3221 codec_drv
->reg_word_size
, GFP_KERNEL
);
3223 if (codec
->reg_cache
== NULL
) {
3231 codec
->driver
= codec_drv
;
3232 codec
->bias_level
= SND_SOC_BIAS_OFF
;
3233 codec
->num_dai
= num_dai
;
3234 mutex_init(&codec
->mutex
);
3235 INIT_LIST_HEAD(&codec
->dapm_widgets
);
3236 INIT_LIST_HEAD(&codec
->dapm_paths
);
3238 for (i
= 0; i
< num_dai
; i
++) {
3239 fixup_codec_formats(&dai_drv
[i
].playback
);
3240 fixup_codec_formats(&dai_drv
[i
].capture
);
3243 /* register any DAIs */
3245 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3250 mutex_lock(&client_mutex
);
3251 list_add(&codec
->list
, &codec_list
);
3252 snd_soc_instantiate_cards();
3253 mutex_unlock(&client_mutex
);
3255 pr_debug("Registered codec '%s'\n", codec
->name
);
3259 for (i
--; i
>= 0; i
--)
3260 snd_soc_unregister_dai(dev
);
3262 if (codec
->reg_cache
)
3263 kfree(codec
->reg_cache
);
3268 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3271 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3273 * @codec: codec to unregister
3275 void snd_soc_unregister_codec(struct device
*dev
)
3277 struct snd_soc_codec
*codec
;
3280 list_for_each_entry(codec
, &codec_list
, list
) {
3281 if (dev
== codec
->dev
)
3288 for (i
= 0; i
< codec
->num_dai
; i
++)
3289 snd_soc_unregister_dai(dev
);
3291 mutex_lock(&client_mutex
);
3292 list_del(&codec
->list
);
3293 mutex_unlock(&client_mutex
);
3295 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3297 if (codec
->reg_cache
)
3298 kfree(codec
->reg_cache
);
3301 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3303 static int __init
snd_soc_init(void)
3305 #ifdef CONFIG_DEBUG_FS
3306 debugfs_root
= debugfs_create_dir("asoc", NULL
);
3307 if (IS_ERR(debugfs_root
) || !debugfs_root
) {
3309 "ASoC: Failed to create debugfs directory\n");
3310 debugfs_root
= NULL
;
3313 if (!debugfs_create_file("codecs", 0444, debugfs_root
, NULL
,
3315 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3317 if (!debugfs_create_file("dais", 0444, debugfs_root
, NULL
,
3319 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3321 if (!debugfs_create_file("platforms", 0444, debugfs_root
, NULL
,
3322 &platform_list_fops
))
3323 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3326 return platform_driver_register(&soc_driver
);
3328 module_init(snd_soc_init
);
3330 static void __exit
snd_soc_exit(void)
3332 #ifdef CONFIG_DEBUG_FS
3333 debugfs_remove_recursive(debugfs_root
);
3335 platform_driver_unregister(&soc_driver
);
3337 module_exit(snd_soc_exit
);
3339 /* Module information */
3340 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3341 MODULE_DESCRIPTION("ALSA SoC Core");
3342 MODULE_LICENSE("GPL");
3343 MODULE_ALIAS("platform:soc-audio");