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 char codec_root
[128];
240 snprintf(codec_root
, sizeof(codec_root
),
241 "%s.%s", codec
->name
, dev_name(codec
->dev
));
243 snprintf(codec_root
, sizeof(codec_root
),
246 codec
->debugfs_codec_root
= debugfs_create_dir(codec_root
,
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
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0744,
262 codec
->debugfs_codec_root
,
264 if (!codec
->debugfs_pop_time
)
266 "Failed to create pop time debugfs file\n");
268 codec
->debugfs_dapm
= debugfs_create_dir("dapm",
269 codec
->debugfs_codec_root
);
270 if (!codec
->debugfs_dapm
)
272 "Failed to create DAPM debugfs directory\n");
274 snd_soc_dapm_debugfs_init(codec
);
277 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
279 debugfs_remove_recursive(codec
->debugfs_codec_root
);
284 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
288 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
293 #ifdef CONFIG_SND_SOC_AC97_BUS
294 /* unregister ac97 codec */
295 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
297 if (codec
->ac97
->dev
.bus
)
298 device_unregister(&codec
->ac97
->dev
);
302 /* stop no dev release warning */
303 static void soc_ac97_device_release(struct device
*dev
){}
305 /* register ac97 codec to bus */
306 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
310 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
311 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
312 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
314 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
315 codec
->card
->snd_card
->number
, 0, codec
->name
);
316 err
= device_register(&codec
->ac97
->dev
);
318 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
319 codec
->ac97
->dev
.bus
= NULL
;
326 static int soc_pcm_apply_symmetry(struct snd_pcm_substream
*substream
)
328 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
329 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
330 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
333 if (codec_dai
->driver
->symmetric_rates
|| cpu_dai
->driver
->symmetric_rates
||
334 rtd
->dai_link
->symmetric_rates
) {
335 dev_dbg(&rtd
->dev
, "Symmetry forces %dHz rate\n",
338 ret
= snd_pcm_hw_constraint_minmax(substream
->runtime
,
339 SNDRV_PCM_HW_PARAM_RATE
,
344 "Unable to apply rate symmetry constraint: %d\n", ret
);
353 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
354 * then initialized and any private data can be allocated. This also calls
355 * startup for the cpu DAI, platform, machine and codec DAI.
357 static int soc_pcm_open(struct snd_pcm_substream
*substream
)
359 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
360 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
361 struct snd_soc_platform
*platform
= rtd
->platform
;
362 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
363 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
364 struct snd_soc_dai_driver
*cpu_dai_drv
= cpu_dai
->driver
;
365 struct snd_soc_dai_driver
*codec_dai_drv
= codec_dai
->driver
;
368 mutex_lock(&pcm_mutex
);
370 /* startup the audio subsystem */
371 if (cpu_dai
->driver
->ops
->startup
) {
372 ret
= cpu_dai
->driver
->ops
->startup(substream
, cpu_dai
);
374 printk(KERN_ERR
"asoc: can't open interface %s\n",
380 if (platform
->driver
->ops
->open
) {
381 ret
= platform
->driver
->ops
->open(substream
);
383 printk(KERN_ERR
"asoc: can't open platform %s\n", platform
->name
);
388 if (codec_dai
->driver
->ops
->startup
) {
389 ret
= codec_dai
->driver
->ops
->startup(substream
, codec_dai
);
391 printk(KERN_ERR
"asoc: can't open codec %s\n",
397 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->startup
) {
398 ret
= rtd
->dai_link
->ops
->startup(substream
);
400 printk(KERN_ERR
"asoc: %s startup failed\n", rtd
->dai_link
->name
);
405 /* Check that the codec and cpu DAI's are compatible */
406 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
407 runtime
->hw
.rate_min
=
408 max(codec_dai_drv
->playback
.rate_min
,
409 cpu_dai_drv
->playback
.rate_min
);
410 runtime
->hw
.rate_max
=
411 min(codec_dai_drv
->playback
.rate_max
,
412 cpu_dai_drv
->playback
.rate_max
);
413 runtime
->hw
.channels_min
=
414 max(codec_dai_drv
->playback
.channels_min
,
415 cpu_dai_drv
->playback
.channels_min
);
416 runtime
->hw
.channels_max
=
417 min(codec_dai_drv
->playback
.channels_max
,
418 cpu_dai_drv
->playback
.channels_max
);
419 runtime
->hw
.formats
=
420 codec_dai_drv
->playback
.formats
& cpu_dai_drv
->playback
.formats
;
422 codec_dai_drv
->playback
.rates
& cpu_dai_drv
->playback
.rates
;
423 if (codec_dai_drv
->playback
.rates
424 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
425 runtime
->hw
.rates
|= cpu_dai_drv
->playback
.rates
;
426 if (cpu_dai_drv
->playback
.rates
427 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
428 runtime
->hw
.rates
|= codec_dai_drv
->playback
.rates
;
430 runtime
->hw
.rate_min
=
431 max(codec_dai_drv
->capture
.rate_min
,
432 cpu_dai_drv
->capture
.rate_min
);
433 runtime
->hw
.rate_max
=
434 min(codec_dai_drv
->capture
.rate_max
,
435 cpu_dai_drv
->capture
.rate_max
);
436 runtime
->hw
.channels_min
=
437 max(codec_dai_drv
->capture
.channels_min
,
438 cpu_dai_drv
->capture
.channels_min
);
439 runtime
->hw
.channels_max
=
440 min(codec_dai_drv
->capture
.channels_max
,
441 cpu_dai_drv
->capture
.channels_max
);
442 runtime
->hw
.formats
=
443 codec_dai_drv
->capture
.formats
& cpu_dai_drv
->capture
.formats
;
445 codec_dai_drv
->capture
.rates
& cpu_dai_drv
->capture
.rates
;
446 if (codec_dai_drv
->capture
.rates
447 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
448 runtime
->hw
.rates
|= cpu_dai_drv
->capture
.rates
;
449 if (cpu_dai_drv
->capture
.rates
450 & (SNDRV_PCM_RATE_KNOT
| SNDRV_PCM_RATE_CONTINUOUS
))
451 runtime
->hw
.rates
|= codec_dai_drv
->capture
.rates
;
454 snd_pcm_limit_hw_rates(runtime
);
455 if (!runtime
->hw
.rates
) {
456 printk(KERN_ERR
"asoc: %s <-> %s No matching rates\n",
457 codec_dai
->name
, cpu_dai
->name
);
460 if (!runtime
->hw
.formats
) {
461 printk(KERN_ERR
"asoc: %s <-> %s No matching formats\n",
462 codec_dai
->name
, cpu_dai
->name
);
465 if (!runtime
->hw
.channels_min
|| !runtime
->hw
.channels_max
) {
466 printk(KERN_ERR
"asoc: %s <-> %s No matching channels\n",
467 codec_dai
->name
, cpu_dai
->name
);
471 /* Symmetry only applies if we've already got an active stream. */
472 if (cpu_dai
->active
|| codec_dai
->active
) {
473 ret
= soc_pcm_apply_symmetry(substream
);
478 pr_debug("asoc: %s <-> %s info:\n",
479 codec_dai
->name
, cpu_dai
->name
);
480 pr_debug("asoc: rate mask 0x%x\n", runtime
->hw
.rates
);
481 pr_debug("asoc: min ch %d max ch %d\n", runtime
->hw
.channels_min
,
482 runtime
->hw
.channels_max
);
483 pr_debug("asoc: min rate %d max rate %d\n", runtime
->hw
.rate_min
,
484 runtime
->hw
.rate_max
);
486 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
487 cpu_dai
->playback_active
++;
488 codec_dai
->playback_active
++;
490 cpu_dai
->capture_active
++;
491 codec_dai
->capture_active
++;
495 rtd
->codec
->active
++;
496 mutex_unlock(&pcm_mutex
);
500 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
501 rtd
->dai_link
->ops
->shutdown(substream
);
504 if (codec_dai
->driver
->ops
->shutdown
)
505 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
508 if (platform
->driver
->ops
->close
)
509 platform
->driver
->ops
->close(substream
);
512 if (cpu_dai
->driver
->ops
->shutdown
)
513 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
515 mutex_unlock(&pcm_mutex
);
520 * Power down the audio subsystem pmdown_time msecs after close is called.
521 * This is to ensure there are no pops or clicks in between any music tracks
522 * due to DAPM power cycling.
524 static void close_delayed_work(struct work_struct
*work
)
526 struct snd_soc_pcm_runtime
*rtd
=
527 container_of(work
, struct snd_soc_pcm_runtime
, delayed_work
.work
);
528 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
530 mutex_lock(&pcm_mutex
);
532 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
533 codec_dai
->driver
->playback
.stream_name
,
534 codec_dai
->playback_active
? "active" : "inactive",
535 codec_dai
->pop_wait
? "yes" : "no");
537 /* are we waiting on this codec DAI stream */
538 if (codec_dai
->pop_wait
== 1) {
539 codec_dai
->pop_wait
= 0;
540 snd_soc_dapm_stream_event(rtd
,
541 codec_dai
->driver
->playback
.stream_name
,
542 SND_SOC_DAPM_STREAM_STOP
);
545 mutex_unlock(&pcm_mutex
);
549 * Called by ALSA when a PCM substream is closed. Private data can be
550 * freed here. The cpu DAI, codec DAI, machine and platform are also
553 static int soc_codec_close(struct snd_pcm_substream
*substream
)
555 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
556 struct snd_soc_platform
*platform
= rtd
->platform
;
557 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
558 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
559 struct snd_soc_codec
*codec
= rtd
->codec
;
561 mutex_lock(&pcm_mutex
);
563 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
564 cpu_dai
->playback_active
--;
565 codec_dai
->playback_active
--;
567 cpu_dai
->capture_active
--;
568 codec_dai
->capture_active
--;
575 /* Muting the DAC suppresses artifacts caused during digital
576 * shutdown, for example from stopping clocks.
578 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
579 snd_soc_dai_digital_mute(codec_dai
, 1);
581 if (cpu_dai
->driver
->ops
->shutdown
)
582 cpu_dai
->driver
->ops
->shutdown(substream
, cpu_dai
);
584 if (codec_dai
->driver
->ops
->shutdown
)
585 codec_dai
->driver
->ops
->shutdown(substream
, codec_dai
);
587 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->shutdown
)
588 rtd
->dai_link
->ops
->shutdown(substream
);
590 if (platform
->driver
->ops
->close
)
591 platform
->driver
->ops
->close(substream
);
592 cpu_dai
->runtime
= NULL
;
594 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
595 /* start delayed pop wq here for playback streams */
596 codec_dai
->pop_wait
= 1;
597 schedule_delayed_work(&rtd
->delayed_work
,
598 msecs_to_jiffies(rtd
->pmdown_time
));
600 /* capture streams can be powered down now */
601 snd_soc_dapm_stream_event(rtd
,
602 codec_dai
->driver
->capture
.stream_name
,
603 SND_SOC_DAPM_STREAM_STOP
);
606 mutex_unlock(&pcm_mutex
);
611 * Called by ALSA when the PCM substream is prepared, can set format, sample
612 * rate, etc. This function is non atomic and can be called multiple times,
613 * it can refer to the runtime info.
615 static int soc_pcm_prepare(struct snd_pcm_substream
*substream
)
617 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
618 struct snd_soc_platform
*platform
= rtd
->platform
;
619 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
620 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
623 mutex_lock(&pcm_mutex
);
625 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->prepare
) {
626 ret
= rtd
->dai_link
->ops
->prepare(substream
);
628 printk(KERN_ERR
"asoc: machine prepare error\n");
633 if (platform
->driver
->ops
->prepare
) {
634 ret
= platform
->driver
->ops
->prepare(substream
);
636 printk(KERN_ERR
"asoc: platform prepare error\n");
641 if (codec_dai
->driver
->ops
->prepare
) {
642 ret
= codec_dai
->driver
->ops
->prepare(substream
, codec_dai
);
644 printk(KERN_ERR
"asoc: codec DAI prepare error\n");
649 if (cpu_dai
->driver
->ops
->prepare
) {
650 ret
= cpu_dai
->driver
->ops
->prepare(substream
, cpu_dai
);
652 printk(KERN_ERR
"asoc: cpu DAI prepare error\n");
657 /* cancel any delayed stream shutdown that is pending */
658 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
&&
659 codec_dai
->pop_wait
) {
660 codec_dai
->pop_wait
= 0;
661 cancel_delayed_work(&rtd
->delayed_work
);
664 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
665 snd_soc_dapm_stream_event(rtd
,
666 codec_dai
->driver
->playback
.stream_name
,
667 SND_SOC_DAPM_STREAM_START
);
669 snd_soc_dapm_stream_event(rtd
,
670 codec_dai
->driver
->capture
.stream_name
,
671 SND_SOC_DAPM_STREAM_START
);
673 snd_soc_dai_digital_mute(codec_dai
, 0);
676 mutex_unlock(&pcm_mutex
);
681 * Called by ALSA when the hardware params are set by application. This
682 * function can also be called multiple times and can allocate buffers
683 * (using snd_pcm_lib_* ). It's non-atomic.
685 static int soc_pcm_hw_params(struct snd_pcm_substream
*substream
,
686 struct snd_pcm_hw_params
*params
)
688 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
689 struct snd_soc_platform
*platform
= rtd
->platform
;
690 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
691 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
694 mutex_lock(&pcm_mutex
);
696 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_params
) {
697 ret
= rtd
->dai_link
->ops
->hw_params(substream
, params
);
699 printk(KERN_ERR
"asoc: machine hw_params failed\n");
704 if (codec_dai
->driver
->ops
->hw_params
) {
705 ret
= codec_dai
->driver
->ops
->hw_params(substream
, params
, codec_dai
);
707 printk(KERN_ERR
"asoc: can't set codec %s hw params\n",
713 if (cpu_dai
->driver
->ops
->hw_params
) {
714 ret
= cpu_dai
->driver
->ops
->hw_params(substream
, params
, cpu_dai
);
716 printk(KERN_ERR
"asoc: interface %s hw params failed\n",
722 if (platform
->driver
->ops
->hw_params
) {
723 ret
= platform
->driver
->ops
->hw_params(substream
, params
);
725 printk(KERN_ERR
"asoc: platform %s hw params failed\n",
731 rtd
->rate
= params_rate(params
);
734 mutex_unlock(&pcm_mutex
);
738 if (cpu_dai
->driver
->ops
->hw_free
)
739 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
742 if (codec_dai
->driver
->ops
->hw_free
)
743 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
746 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
747 rtd
->dai_link
->ops
->hw_free(substream
);
749 mutex_unlock(&pcm_mutex
);
754 * Free's resources allocated by hw_params, can be called multiple times
756 static int soc_pcm_hw_free(struct snd_pcm_substream
*substream
)
758 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
759 struct snd_soc_platform
*platform
= rtd
->platform
;
760 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
761 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
762 struct snd_soc_codec
*codec
= rtd
->codec
;
764 mutex_lock(&pcm_mutex
);
766 /* apply codec digital mute */
768 snd_soc_dai_digital_mute(codec_dai
, 1);
770 /* free any machine hw params */
771 if (rtd
->dai_link
->ops
&& rtd
->dai_link
->ops
->hw_free
)
772 rtd
->dai_link
->ops
->hw_free(substream
);
774 /* free any DMA resources */
775 if (platform
->driver
->ops
->hw_free
)
776 platform
->driver
->ops
->hw_free(substream
);
778 /* now free hw params for the DAI's */
779 if (codec_dai
->driver
->ops
->hw_free
)
780 codec_dai
->driver
->ops
->hw_free(substream
, codec_dai
);
782 if (cpu_dai
->driver
->ops
->hw_free
)
783 cpu_dai
->driver
->ops
->hw_free(substream
, cpu_dai
);
785 mutex_unlock(&pcm_mutex
);
789 static int soc_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
791 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
792 struct snd_soc_platform
*platform
= rtd
->platform
;
793 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
794 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
797 if (codec_dai
->driver
->ops
->trigger
) {
798 ret
= codec_dai
->driver
->ops
->trigger(substream
, cmd
, codec_dai
);
803 if (platform
->driver
->ops
->trigger
) {
804 ret
= platform
->driver
->ops
->trigger(substream
, cmd
);
809 if (cpu_dai
->driver
->ops
->trigger
) {
810 ret
= cpu_dai
->driver
->ops
->trigger(substream
, cmd
, cpu_dai
);
818 * soc level wrapper for pointer callback
819 * If cpu_dai, codec_dai, platform driver has the delay callback, than
820 * the runtime->delay will be updated accordingly.
822 static snd_pcm_uframes_t
soc_pcm_pointer(struct snd_pcm_substream
*substream
)
824 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
825 struct snd_soc_platform
*platform
= rtd
->platform
;
826 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
827 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
828 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
829 snd_pcm_uframes_t offset
= 0;
830 snd_pcm_sframes_t delay
= 0;
832 if (platform
->driver
->ops
->pointer
)
833 offset
= platform
->driver
->ops
->pointer(substream
);
835 if (cpu_dai
->driver
->ops
->delay
)
836 delay
+= cpu_dai
->driver
->ops
->delay(substream
, cpu_dai
);
838 if (codec_dai
->driver
->ops
->delay
)
839 delay
+= codec_dai
->driver
->ops
->delay(substream
, codec_dai
);
841 if (platform
->driver
->delay
)
842 delay
+= platform
->driver
->delay(substream
, codec_dai
);
844 runtime
->delay
= delay
;
849 /* ASoC PCM operations */
850 static struct snd_pcm_ops soc_pcm_ops
= {
851 .open
= soc_pcm_open
,
852 .close
= soc_codec_close
,
853 .hw_params
= soc_pcm_hw_params
,
854 .hw_free
= soc_pcm_hw_free
,
855 .prepare
= soc_pcm_prepare
,
856 .trigger
= soc_pcm_trigger
,
857 .pointer
= soc_pcm_pointer
,
861 /* powers down audio subsystem for suspend */
862 static int soc_suspend(struct device
*dev
)
864 struct platform_device
*pdev
= to_platform_device(dev
);
865 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
868 /* If the initialization of this soc device failed, there is no codec
869 * associated with it. Just bail out in this case.
871 if (list_empty(&card
->codec_dev_list
))
874 /* Due to the resume being scheduled into a workqueue we could
875 * suspend before that's finished - wait for it to complete.
877 snd_power_lock(card
->snd_card
);
878 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
879 snd_power_unlock(card
->snd_card
);
881 /* we're going to block userspace touching us until resume completes */
882 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
884 /* mute any active DAC's */
885 for (i
= 0; i
< card
->num_rtd
; i
++) {
886 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
887 struct snd_soc_dai_driver
*drv
= dai
->driver
;
889 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
892 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
893 drv
->ops
->digital_mute(dai
, 1);
896 /* suspend all pcms */
897 for (i
= 0; i
< card
->num_rtd
; i
++) {
898 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
901 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
904 if (card
->suspend_pre
)
905 card
->suspend_pre(pdev
, PMSG_SUSPEND
);
907 for (i
= 0; i
< card
->num_rtd
; i
++) {
908 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
909 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
911 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
914 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
915 cpu_dai
->driver
->suspend(cpu_dai
);
916 if (platform
->driver
->suspend
&& !platform
->suspended
) {
917 platform
->driver
->suspend(cpu_dai
);
918 platform
->suspended
= 1;
922 /* close any waiting streams and save state */
923 for (i
= 0; i
< card
->num_rtd
; i
++) {
924 run_delayed_work(&card
->rtd
[i
].delayed_work
);
925 card
->rtd
[i
].codec
->suspend_bias_level
= card
->rtd
[i
].codec
->bias_level
;
928 for (i
= 0; i
< card
->num_rtd
; i
++) {
929 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
931 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
934 if (driver
->playback
.stream_name
!= NULL
)
935 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
936 SND_SOC_DAPM_STREAM_SUSPEND
);
938 if (driver
->capture
.stream_name
!= NULL
)
939 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
940 SND_SOC_DAPM_STREAM_SUSPEND
);
943 /* suspend all CODECs */
944 for (i
= 0; i
< card
->num_rtd
; i
++) {
945 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
946 /* If there are paths active then the CODEC will be held with
947 * bias _ON and should not be suspended. */
948 if (!codec
->suspended
&& codec
->driver
->suspend
) {
949 switch (codec
->bias_level
) {
950 case SND_SOC_BIAS_STANDBY
:
951 case SND_SOC_BIAS_OFF
:
952 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
953 codec
->suspended
= 1;
956 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
962 for (i
= 0; i
< card
->num_rtd
; i
++) {
963 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
965 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
968 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
969 cpu_dai
->driver
->suspend(cpu_dai
);
972 if (card
->suspend_post
)
973 card
->suspend_post(pdev
, PMSG_SUSPEND
);
978 /* deferred resume work, so resume can complete before we finished
979 * setting our codec back up, which can be very slow on I2C
981 static void soc_resume_deferred(struct work_struct
*work
)
983 struct snd_soc_card
*card
=
984 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
985 struct platform_device
*pdev
= to_platform_device(card
->dev
);
988 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
989 * so userspace apps are blocked from touching us
992 dev_dbg(card
->dev
, "starting resume work\n");
994 /* Bring us up into D2 so that DAPM starts enabling things */
995 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
997 if (card
->resume_pre
)
998 card
->resume_pre(pdev
);
1000 /* resume AC97 DAIs */
1001 for (i
= 0; i
< card
->num_rtd
; i
++) {
1002 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1004 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1007 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
1008 cpu_dai
->driver
->resume(cpu_dai
);
1011 for (i
= 0; i
< card
->num_rtd
; i
++) {
1012 struct snd_soc_codec
*codec
= card
->rtd
[i
].codec
;
1013 /* If the CODEC was idle over suspend then it will have been
1014 * left with bias OFF or STANDBY and suspended so we must now
1015 * resume. Otherwise the suspend was suppressed.
1017 if (codec
->driver
->resume
&& codec
->suspended
) {
1018 switch (codec
->bias_level
) {
1019 case SND_SOC_BIAS_STANDBY
:
1020 case SND_SOC_BIAS_OFF
:
1021 codec
->driver
->resume(codec
);
1022 codec
->suspended
= 0;
1025 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
1031 for (i
= 0; i
< card
->num_rtd
; i
++) {
1032 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
1034 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1037 if (driver
->playback
.stream_name
!= NULL
)
1038 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
1039 SND_SOC_DAPM_STREAM_RESUME
);
1041 if (driver
->capture
.stream_name
!= NULL
)
1042 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
1043 SND_SOC_DAPM_STREAM_RESUME
);
1046 /* unmute any active DACs */
1047 for (i
= 0; i
< card
->num_rtd
; i
++) {
1048 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
1049 struct snd_soc_dai_driver
*drv
= dai
->driver
;
1051 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1054 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
1055 drv
->ops
->digital_mute(dai
, 0);
1058 for (i
= 0; i
< card
->num_rtd
; i
++) {
1059 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1060 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
1062 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
1065 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
1066 cpu_dai
->driver
->resume(cpu_dai
);
1067 if (platform
->driver
->resume
&& platform
->suspended
) {
1068 platform
->driver
->resume(cpu_dai
);
1069 platform
->suspended
= 0;
1073 if (card
->resume_post
)
1074 card
->resume_post(pdev
);
1076 dev_dbg(card
->dev
, "resume work completed\n");
1078 /* userspace can access us now we are back as we were before */
1079 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
1082 /* powers up audio subsystem after a suspend */
1083 static int soc_resume(struct device
*dev
)
1085 struct platform_device
*pdev
= to_platform_device(dev
);
1086 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1089 /* AC97 devices might have other drivers hanging off them so
1090 * need to resume immediately. Other drivers don't have that
1091 * problem and may take a substantial amount of time to resume
1092 * due to I/O costs and anti-pop so handle them out of line.
1094 for (i
= 0; i
< card
->num_rtd
; i
++) {
1095 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1096 if (cpu_dai
->driver
->ac97_control
) {
1097 dev_dbg(dev
, "Resuming AC97 immediately\n");
1098 soc_resume_deferred(&card
->deferred_resume_work
);
1100 dev_dbg(dev
, "Scheduling resume work\n");
1101 if (!schedule_work(&card
->deferred_resume_work
))
1102 dev_err(dev
, "resume work item may be lost\n");
1109 #define soc_suspend NULL
1110 #define soc_resume NULL
1113 static struct snd_soc_dai_ops null_dai_ops
= {
1116 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
1118 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1119 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1120 struct snd_soc_codec
*codec
;
1121 struct snd_soc_platform
*platform
;
1122 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
1126 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
1128 /* do we already have the CPU DAI for this link ? */
1132 /* no, then find CPU DAI from registered DAIs*/
1133 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
1134 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
1136 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1139 rtd
->cpu_dai
= cpu_dai
;
1143 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
1144 dai_link
->cpu_dai_name
);
1147 /* do we already have the CODEC for this link ? */
1152 /* no, then find CODEC from registered CODECs*/
1153 list_for_each_entry(codec
, &codec_list
, list
) {
1154 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
1157 if (!try_module_get(codec
->dev
->driver
->owner
))
1160 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1161 list_for_each_entry(codec_dai
, &dai_list
, list
) {
1162 if (codec
->dev
== codec_dai
->dev
&&
1163 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
1164 rtd
->codec_dai
= codec_dai
;
1168 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
1169 dai_link
->codec_dai_name
);
1174 dev_dbg(card
->dev
, "CODEC %s not registered\n",
1175 dai_link
->codec_name
);
1178 /* do we already have the CODEC DAI for this link ? */
1179 if (rtd
->platform
) {
1182 /* no, then find CPU DAI from registered DAIs*/
1183 list_for_each_entry(platform
, &platform_list
, list
) {
1184 if (!strcmp(platform
->name
, dai_link
->platform_name
)) {
1186 if (!try_module_get(platform
->dev
->driver
->owner
))
1189 rtd
->platform
= platform
;
1194 dev_dbg(card
->dev
, "platform %s not registered\n",
1195 dai_link
->platform_name
);
1199 /* mark rtd as complete if we found all 4 of our client devices */
1200 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
1207 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
)
1209 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1210 struct snd_soc_codec
*codec
= rtd
->codec
;
1211 struct snd_soc_platform
*platform
= rtd
->platform
;
1212 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1215 /* unregister the rtd device */
1216 if (rtd
->dev_registered
) {
1217 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1218 device_unregister(&rtd
->dev
);
1219 rtd
->dev_registered
= 0;
1222 /* remove the CODEC DAI */
1223 if (codec_dai
&& codec_dai
->probed
) {
1224 if (codec_dai
->driver
->remove
) {
1225 err
= codec_dai
->driver
->remove(codec_dai
);
1227 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
1229 codec_dai
->probed
= 0;
1230 list_del(&codec_dai
->card_list
);
1233 /* remove the platform */
1234 if (platform
&& platform
->probed
) {
1235 if (platform
->driver
->remove
) {
1236 err
= platform
->driver
->remove(platform
);
1238 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
1240 platform
->probed
= 0;
1241 list_del(&platform
->card_list
);
1242 module_put(platform
->dev
->driver
->owner
);
1245 /* remove the CODEC */
1246 if (codec
&& codec
->probed
) {
1247 if (codec
->driver
->remove
) {
1248 err
= codec
->driver
->remove(codec
);
1250 printk(KERN_ERR
"asoc: failed to remove %s\n", codec
->name
);
1253 /* Make sure all DAPM widgets are freed */
1254 snd_soc_dapm_free(codec
);
1256 soc_cleanup_codec_debugfs(codec
);
1257 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1259 list_del(&codec
->card_list
);
1260 module_put(codec
->dev
->driver
->owner
);
1263 /* remove the cpu_dai */
1264 if (cpu_dai
&& cpu_dai
->probed
) {
1265 if (cpu_dai
->driver
->remove
) {
1266 err
= cpu_dai
->driver
->remove(cpu_dai
);
1268 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
1270 cpu_dai
->probed
= 0;
1271 list_del(&cpu_dai
->card_list
);
1272 module_put(cpu_dai
->dev
->driver
->owner
);
1276 static void rtd_release(struct device
*dev
) {}
1278 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
)
1280 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1281 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1282 struct snd_soc_codec
*codec
= rtd
->codec
;
1283 struct snd_soc_platform
*platform
= rtd
->platform
;
1284 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1287 dev_dbg(card
->dev
, "probe %s dai link %d\n", card
->name
, num
);
1289 /* config components */
1290 codec_dai
->codec
= codec
;
1292 cpu_dai
->platform
= platform
;
1294 rtd
->dev
.parent
= card
->dev
;
1295 codec_dai
->card
= card
;
1296 cpu_dai
->card
= card
;
1298 /* set default power off timeout */
1299 rtd
->pmdown_time
= pmdown_time
;
1301 /* probe the cpu_dai */
1302 if (!cpu_dai
->probed
) {
1303 if (cpu_dai
->driver
->probe
) {
1304 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1306 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1311 cpu_dai
->probed
= 1;
1312 /* mark cpu_dai as probed and add to card cpu_dai list */
1313 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1316 /* probe the CODEC */
1317 if (!codec
->probed
) {
1318 if (codec
->driver
->probe
) {
1319 ret
= codec
->driver
->probe(codec
);
1321 printk(KERN_ERR
"asoc: failed to probe CODEC %s\n",
1326 /* mark codec as probed and add to card codec list */
1328 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1331 /* probe the platform */
1332 if (!platform
->probed
) {
1333 if (platform
->driver
->probe
) {
1334 ret
= platform
->driver
->probe(platform
);
1336 printk(KERN_ERR
"asoc: failed to probe platform %s\n",
1341 /* mark platform as probed and add to card platform list */
1342 platform
->probed
= 1;
1343 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1346 /* probe the CODEC DAI */
1347 if (!codec_dai
->probed
) {
1348 if (codec_dai
->driver
->probe
) {
1349 ret
= codec_dai
->driver
->probe(codec_dai
);
1351 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1357 /* mark cpu_dai as probed and add to card cpu_dai list */
1358 codec_dai
->probed
= 1;
1359 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1362 /* DAPM dai link stream work */
1363 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
1365 /* now that all clients have probed, initialise the DAI link */
1366 if (dai_link
->init
) {
1367 ret
= dai_link
->init(rtd
);
1369 printk(KERN_ERR
"asoc: failed to init %s\n", dai_link
->stream_name
);
1374 /* Make sure all DAPM widgets are instantiated */
1375 snd_soc_dapm_new_widgets(codec
);
1376 snd_soc_dapm_sync(codec
);
1378 /* register the rtd device */
1379 rtd
->dev
.init_name
= rtd
->dai_link
->stream_name
;
1380 rtd
->dev
.release
= rtd_release
;
1381 rtd
->dev
.init_name
= dai_link
->name
;
1382 ret
= device_register(&rtd
->dev
);
1384 printk(KERN_ERR
"asoc: failed to register DAI runtime device %d\n", ret
);
1388 rtd
->dev_registered
= 1;
1389 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1391 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1393 /* add DAPM sysfs entries for this codec */
1394 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1396 printk(KERN_WARNING
"asoc: failed to add codec dapm sysfs entries\n");
1398 /* add codec sysfs entries */
1399 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1401 printk(KERN_WARNING
"asoc: failed to add codec sysfs files\n");
1403 soc_init_codec_debugfs(codec
);
1405 /* create the pcm */
1406 ret
= soc_new_pcm(rtd
, num
);
1408 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1412 /* add platform data for AC97 devices */
1413 if (rtd
->codec_dai
->driver
->ac97_control
)
1414 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1419 #ifdef CONFIG_SND_SOC_AC97_BUS
1420 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1424 /* Only instantiate AC97 if not already done by the adaptor
1425 * for the generic AC97 subsystem.
1427 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1429 ret
= soc_ac97_dev_register(rtd
->codec
);
1431 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1435 rtd
->codec
->ac97_registered
= 1;
1440 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1442 if (codec
->ac97_registered
) {
1443 soc_ac97_dev_unregister(codec
);
1444 codec
->ac97_registered
= 0;
1449 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1451 struct platform_device
*pdev
= to_platform_device(card
->dev
);
1454 mutex_lock(&card
->mutex
);
1456 if (card
->instantiated
) {
1457 mutex_unlock(&card
->mutex
);
1462 for (i
= 0; i
< card
->num_links
; i
++)
1463 soc_bind_dai_link(card
, i
);
1465 /* bind completed ? */
1466 if (card
->num_rtd
!= card
->num_links
) {
1467 mutex_unlock(&card
->mutex
);
1471 /* card bind complete so register a sound card */
1472 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1473 card
->owner
, 0, &card
->snd_card
);
1475 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1477 mutex_unlock(&card
->mutex
);
1480 card
->snd_card
->dev
= card
->dev
;
1483 /* deferred resume work */
1484 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1487 /* initialise the sound card only once */
1489 ret
= card
->probe(pdev
);
1491 goto card_probe_error
;
1494 for (i
= 0; i
< card
->num_links
; i
++) {
1495 ret
= soc_probe_dai_link(card
, i
);
1497 printk(KERN_ERR
"asoc: failed to instanciate card %s\n", card
->name
);
1502 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1504 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1507 ret
= snd_card_register(card
->snd_card
);
1509 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1513 #ifdef CONFIG_SND_SOC_AC97_BUS
1514 /* register any AC97 codecs */
1515 for (i
= 0; i
< card
->num_rtd
; i
++) {
1516 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1518 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1524 card
->instantiated
= 1;
1525 mutex_unlock(&card
->mutex
);
1529 for (i
= 0; i
< card
->num_links
; i
++)
1530 soc_remove_dai_link(card
, i
);
1536 snd_card_free(card
->snd_card
);
1538 mutex_unlock(&card
->mutex
);
1542 * Attempt to initialise any uninitalised cards. Must be called with
1545 static void snd_soc_instantiate_cards(void)
1547 struct snd_soc_card
*card
;
1548 list_for_each_entry(card
, &card_list
, list
)
1549 snd_soc_instantiate_card(card
);
1552 /* probes a new socdev */
1553 static int soc_probe(struct platform_device
*pdev
)
1555 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1558 /* Bodge while we unpick instantiation */
1559 card
->dev
= &pdev
->dev
;
1560 INIT_LIST_HEAD(&card
->dai_dev_list
);
1561 INIT_LIST_HEAD(&card
->codec_dev_list
);
1562 INIT_LIST_HEAD(&card
->platform_dev_list
);
1564 ret
= snd_soc_register_card(card
);
1566 dev_err(&pdev
->dev
, "Failed to register card\n");
1573 /* removes a socdev */
1574 static int soc_remove(struct platform_device
*pdev
)
1576 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1579 if (card
->instantiated
) {
1581 /* make sure any delayed work runs */
1582 for (i
= 0; i
< card
->num_rtd
; i
++) {
1583 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1584 run_delayed_work(&rtd
->delayed_work
);
1587 /* remove and free each DAI */
1588 for (i
= 0; i
< card
->num_rtd
; i
++)
1589 soc_remove_dai_link(card
, i
);
1591 /* remove the card */
1596 snd_card_free(card
->snd_card
);
1598 snd_soc_unregister_card(card
);
1602 static int soc_poweroff(struct device
*dev
)
1604 struct platform_device
*pdev
= to_platform_device(dev
);
1605 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1608 if (!card
->instantiated
)
1611 /* Flush out pmdown_time work - we actually do want to run it
1612 * now, we're shutting down so no imminent restart. */
1613 for (i
= 0; i
< card
->num_rtd
; i
++) {
1614 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1615 run_delayed_work(&rtd
->delayed_work
);
1618 snd_soc_dapm_shutdown(card
);
1623 static const struct dev_pm_ops soc_pm_ops
= {
1624 .suspend
= soc_suspend
,
1625 .resume
= soc_resume
,
1626 .poweroff
= soc_poweroff
,
1629 /* ASoC platform driver */
1630 static struct platform_driver soc_driver
= {
1632 .name
= "soc-audio",
1633 .owner
= THIS_MODULE
,
1637 .remove
= soc_remove
,
1640 /* create a new pcm */
1641 static int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
)
1643 struct snd_soc_codec
*codec
= rtd
->codec
;
1644 struct snd_soc_platform
*platform
= rtd
->platform
;
1645 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1646 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1647 struct snd_pcm
*pcm
;
1649 int ret
= 0, playback
= 0, capture
= 0;
1651 /* check client and interface hw capabilities */
1652 snprintf(new_name
, sizeof(new_name
), "%s %s-%d",
1653 rtd
->dai_link
->stream_name
, codec_dai
->name
, num
);
1655 if (codec_dai
->driver
->playback
.channels_min
)
1657 if (codec_dai
->driver
->capture
.channels_min
)
1660 dev_dbg(rtd
->card
->dev
, "registered pcm #%d %s\n",num
,new_name
);
1661 ret
= snd_pcm_new(rtd
->card
->snd_card
, new_name
,
1662 num
, playback
, capture
, &pcm
);
1664 printk(KERN_ERR
"asoc: can't create pcm for codec %s\n", codec
->name
);
1669 pcm
->private_data
= rtd
;
1670 soc_pcm_ops
.mmap
= platform
->driver
->ops
->mmap
;
1671 soc_pcm_ops
.pointer
= platform
->driver
->ops
->pointer
;
1672 soc_pcm_ops
.ioctl
= platform
->driver
->ops
->ioctl
;
1673 soc_pcm_ops
.copy
= platform
->driver
->ops
->copy
;
1674 soc_pcm_ops
.silence
= platform
->driver
->ops
->silence
;
1675 soc_pcm_ops
.ack
= platform
->driver
->ops
->ack
;
1676 soc_pcm_ops
.page
= platform
->driver
->ops
->page
;
1679 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &soc_pcm_ops
);
1682 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &soc_pcm_ops
);
1684 ret
= platform
->driver
->pcm_new(rtd
->card
->snd_card
, codec_dai
, pcm
);
1686 printk(KERN_ERR
"asoc: platform pcm constructor failed\n");
1690 pcm
->private_free
= platform
->driver
->pcm_free
;
1691 printk(KERN_INFO
"asoc: %s <-> %s mapping ok\n", codec_dai
->name
,
1697 * snd_soc_codec_volatile_register: Report if a register is volatile.
1699 * @codec: CODEC to query.
1700 * @reg: Register to query.
1702 * Boolean function indiciating if a CODEC register is volatile.
1704 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
, int reg
)
1706 if (codec
->driver
->volatile_register
)
1707 return codec
->driver
->volatile_register(reg
);
1711 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1714 * snd_soc_new_ac97_codec - initailise AC97 device
1715 * @codec: audio codec
1716 * @ops: AC97 bus operations
1717 * @num: AC97 codec number
1719 * Initialises AC97 codec resources for use by ad-hoc devices only.
1721 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1722 struct snd_ac97_bus_ops
*ops
, int num
)
1724 mutex_lock(&codec
->mutex
);
1726 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1727 if (codec
->ac97
== NULL
) {
1728 mutex_unlock(&codec
->mutex
);
1732 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1733 if (codec
->ac97
->bus
== NULL
) {
1736 mutex_unlock(&codec
->mutex
);
1740 codec
->ac97
->bus
->ops
= ops
;
1741 codec
->ac97
->num
= num
;
1742 mutex_unlock(&codec
->mutex
);
1745 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1748 * snd_soc_free_ac97_codec - free AC97 codec device
1749 * @codec: audio codec
1751 * Frees AC97 codec device resources.
1753 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1755 mutex_lock(&codec
->mutex
);
1756 #ifdef CONFIG_SND_SOC_AC97_BUS
1757 soc_unregister_ac97_dai_link(codec
);
1759 kfree(codec
->ac97
->bus
);
1762 mutex_unlock(&codec
->mutex
);
1764 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1767 * snd_soc_update_bits - update codec register bits
1768 * @codec: audio codec
1769 * @reg: codec register
1770 * @mask: register mask
1773 * Writes new register value.
1775 * Returns 1 for change else 0.
1777 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1778 unsigned int mask
, unsigned int value
)
1781 unsigned int old
, new;
1783 old
= snd_soc_read(codec
, reg
);
1784 new = (old
& ~mask
) | value
;
1785 change
= old
!= new;
1787 snd_soc_write(codec
, reg
, new);
1791 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1794 * snd_soc_update_bits_locked - update codec register bits
1795 * @codec: audio codec
1796 * @reg: codec register
1797 * @mask: register mask
1800 * Writes new register value, and takes the codec mutex.
1802 * Returns 1 for change else 0.
1804 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1805 unsigned short reg
, unsigned int mask
,
1810 mutex_lock(&codec
->mutex
);
1811 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1812 mutex_unlock(&codec
->mutex
);
1816 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1819 * snd_soc_test_bits - test register for change
1820 * @codec: audio codec
1821 * @reg: codec register
1822 * @mask: register mask
1825 * Tests a register with a new value and checks if the new value is
1826 * different from the old value.
1828 * Returns 1 for change else 0.
1830 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1831 unsigned int mask
, unsigned int value
)
1834 unsigned int old
, new;
1836 old
= snd_soc_read(codec
, reg
);
1837 new = (old
& ~mask
) | value
;
1838 change
= old
!= new;
1842 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1845 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1846 * @substream: the pcm substream
1847 * @hw: the hardware parameters
1849 * Sets the substream runtime hardware parameters.
1851 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1852 const struct snd_pcm_hardware
*hw
)
1854 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1855 runtime
->hw
.info
= hw
->info
;
1856 runtime
->hw
.formats
= hw
->formats
;
1857 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1858 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1859 runtime
->hw
.periods_min
= hw
->periods_min
;
1860 runtime
->hw
.periods_max
= hw
->periods_max
;
1861 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1862 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1865 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1868 * snd_soc_cnew - create new control
1869 * @_template: control template
1870 * @data: control private data
1871 * @long_name: control long name
1873 * Create a new mixer control from a template control.
1875 * Returns 0 for success, else error.
1877 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1878 void *data
, char *long_name
)
1880 struct snd_kcontrol_new
template;
1882 memcpy(&template, _template
, sizeof(template));
1884 template.name
= long_name
;
1887 return snd_ctl_new1(&template, data
);
1889 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1892 * snd_soc_add_controls - add an array of controls to a codec.
1893 * Convienience function to add a list of controls. Many codecs were
1894 * duplicating this code.
1896 * @codec: codec to add controls to
1897 * @controls: array of controls to add
1898 * @num_controls: number of elements in the array
1900 * Return 0 for success, else error.
1902 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
1903 const struct snd_kcontrol_new
*controls
, int num_controls
)
1905 struct snd_card
*card
= codec
->card
->snd_card
;
1908 for (i
= 0; i
< num_controls
; i
++) {
1909 const struct snd_kcontrol_new
*control
= &controls
[i
];
1910 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
, NULL
));
1912 dev_err(codec
->dev
, "%s: Failed to add %s\n",
1913 codec
->name
, control
->name
);
1920 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
1923 * snd_soc_info_enum_double - enumerated double mixer info callback
1924 * @kcontrol: mixer control
1925 * @uinfo: control element information
1927 * Callback to provide information about a double enumerated
1930 * Returns 0 for success.
1932 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
1933 struct snd_ctl_elem_info
*uinfo
)
1935 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1937 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
1938 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
1939 uinfo
->value
.enumerated
.items
= e
->max
;
1941 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
1942 uinfo
->value
.enumerated
.item
= e
->max
- 1;
1943 strcpy(uinfo
->value
.enumerated
.name
,
1944 e
->texts
[uinfo
->value
.enumerated
.item
]);
1947 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
1950 * snd_soc_get_enum_double - enumerated double mixer get callback
1951 * @kcontrol: mixer control
1952 * @ucontrol: control element information
1954 * Callback to get the value of a double enumerated mixer.
1956 * Returns 0 for success.
1958 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
1959 struct snd_ctl_elem_value
*ucontrol
)
1961 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1962 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1963 unsigned int val
, bitmask
;
1965 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1967 val
= snd_soc_read(codec
, e
->reg
);
1968 ucontrol
->value
.enumerated
.item
[0]
1969 = (val
>> e
->shift_l
) & (bitmask
- 1);
1970 if (e
->shift_l
!= e
->shift_r
)
1971 ucontrol
->value
.enumerated
.item
[1] =
1972 (val
>> e
->shift_r
) & (bitmask
- 1);
1976 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
1979 * snd_soc_put_enum_double - enumerated double mixer put callback
1980 * @kcontrol: mixer control
1981 * @ucontrol: control element information
1983 * Callback to set the value of a double enumerated mixer.
1985 * Returns 0 for success.
1987 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
1988 struct snd_ctl_elem_value
*ucontrol
)
1990 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1991 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1993 unsigned int mask
, bitmask
;
1995 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1997 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
1999 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2000 mask
= (bitmask
- 1) << e
->shift_l
;
2001 if (e
->shift_l
!= e
->shift_r
) {
2002 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2004 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2005 mask
|= (bitmask
- 1) << e
->shift_r
;
2008 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2010 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2013 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2014 * @kcontrol: mixer control
2015 * @ucontrol: control element information
2017 * Callback to get the value of a double semi enumerated mixer.
2019 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2020 * used for handling bitfield coded enumeration for example.
2022 * Returns 0 for success.
2024 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2025 struct snd_ctl_elem_value
*ucontrol
)
2027 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2028 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2029 unsigned int reg_val
, val
, mux
;
2031 reg_val
= snd_soc_read(codec
, e
->reg
);
2032 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2033 for (mux
= 0; mux
< e
->max
; mux
++) {
2034 if (val
== e
->values
[mux
])
2037 ucontrol
->value
.enumerated
.item
[0] = mux
;
2038 if (e
->shift_l
!= e
->shift_r
) {
2039 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2040 for (mux
= 0; mux
< e
->max
; mux
++) {
2041 if (val
== e
->values
[mux
])
2044 ucontrol
->value
.enumerated
.item
[1] = mux
;
2049 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2052 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2053 * @kcontrol: mixer control
2054 * @ucontrol: control element information
2056 * Callback to set the value of a double semi enumerated mixer.
2058 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2059 * used for handling bitfield coded enumeration for example.
2061 * Returns 0 for success.
2063 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2064 struct snd_ctl_elem_value
*ucontrol
)
2066 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2067 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2071 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2073 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2074 mask
= e
->mask
<< e
->shift_l
;
2075 if (e
->shift_l
!= e
->shift_r
) {
2076 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2078 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2079 mask
|= e
->mask
<< e
->shift_r
;
2082 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2084 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2087 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2088 * @kcontrol: mixer control
2089 * @uinfo: control element information
2091 * Callback to provide information about an external enumerated
2094 * Returns 0 for success.
2096 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2097 struct snd_ctl_elem_info
*uinfo
)
2099 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2101 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2103 uinfo
->value
.enumerated
.items
= e
->max
;
2105 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2106 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2107 strcpy(uinfo
->value
.enumerated
.name
,
2108 e
->texts
[uinfo
->value
.enumerated
.item
]);
2111 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2114 * snd_soc_info_volsw_ext - external single mixer info callback
2115 * @kcontrol: mixer control
2116 * @uinfo: control element information
2118 * Callback to provide information about a single external mixer control.
2120 * Returns 0 for success.
2122 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2123 struct snd_ctl_elem_info
*uinfo
)
2125 int max
= kcontrol
->private_value
;
2127 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2128 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2130 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2133 uinfo
->value
.integer
.min
= 0;
2134 uinfo
->value
.integer
.max
= max
;
2137 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2140 * snd_soc_info_volsw - single mixer info callback
2141 * @kcontrol: mixer control
2142 * @uinfo: control element information
2144 * Callback to provide information about a single mixer control.
2146 * Returns 0 for success.
2148 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2149 struct snd_ctl_elem_info
*uinfo
)
2151 struct soc_mixer_control
*mc
=
2152 (struct soc_mixer_control
*)kcontrol
->private_value
;
2154 unsigned int shift
= mc
->shift
;
2155 unsigned int rshift
= mc
->rshift
;
2157 if (!mc
->platform_max
)
2158 mc
->platform_max
= mc
->max
;
2159 platform_max
= mc
->platform_max
;
2161 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2162 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2164 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2166 uinfo
->count
= shift
== rshift
? 1 : 2;
2167 uinfo
->value
.integer
.min
= 0;
2168 uinfo
->value
.integer
.max
= platform_max
;
2171 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2174 * snd_soc_get_volsw - single mixer get callback
2175 * @kcontrol: mixer control
2176 * @ucontrol: control element information
2178 * Callback to get the value of a single mixer control.
2180 * Returns 0 for success.
2182 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2183 struct snd_ctl_elem_value
*ucontrol
)
2185 struct soc_mixer_control
*mc
=
2186 (struct soc_mixer_control
*)kcontrol
->private_value
;
2187 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2188 unsigned int reg
= mc
->reg
;
2189 unsigned int shift
= mc
->shift
;
2190 unsigned int rshift
= mc
->rshift
;
2192 unsigned int mask
= (1 << fls(max
)) - 1;
2193 unsigned int invert
= mc
->invert
;
2195 ucontrol
->value
.integer
.value
[0] =
2196 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2197 if (shift
!= rshift
)
2198 ucontrol
->value
.integer
.value
[1] =
2199 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2201 ucontrol
->value
.integer
.value
[0] =
2202 max
- ucontrol
->value
.integer
.value
[0];
2203 if (shift
!= rshift
)
2204 ucontrol
->value
.integer
.value
[1] =
2205 max
- ucontrol
->value
.integer
.value
[1];
2210 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2213 * snd_soc_put_volsw - single mixer put callback
2214 * @kcontrol: mixer control
2215 * @ucontrol: control element information
2217 * Callback to set the value of a single mixer control.
2219 * Returns 0 for success.
2221 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2222 struct snd_ctl_elem_value
*ucontrol
)
2224 struct soc_mixer_control
*mc
=
2225 (struct soc_mixer_control
*)kcontrol
->private_value
;
2226 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2227 unsigned int reg
= mc
->reg
;
2228 unsigned int shift
= mc
->shift
;
2229 unsigned int rshift
= mc
->rshift
;
2231 unsigned int mask
= (1 << fls(max
)) - 1;
2232 unsigned int invert
= mc
->invert
;
2233 unsigned int val
, val2
, val_mask
;
2235 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2238 val_mask
= mask
<< shift
;
2240 if (shift
!= rshift
) {
2241 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2244 val_mask
|= mask
<< rshift
;
2245 val
|= val2
<< rshift
;
2247 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2249 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2252 * snd_soc_info_volsw_2r - double mixer info callback
2253 * @kcontrol: mixer control
2254 * @uinfo: control element information
2256 * Callback to provide information about a double mixer control that
2257 * spans 2 codec registers.
2259 * Returns 0 for success.
2261 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2262 struct snd_ctl_elem_info
*uinfo
)
2264 struct soc_mixer_control
*mc
=
2265 (struct soc_mixer_control
*)kcontrol
->private_value
;
2268 if (!mc
->platform_max
)
2269 mc
->platform_max
= mc
->max
;
2270 platform_max
= mc
->platform_max
;
2272 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2273 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2275 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2278 uinfo
->value
.integer
.min
= 0;
2279 uinfo
->value
.integer
.max
= platform_max
;
2282 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2285 * snd_soc_get_volsw_2r - double mixer get callback
2286 * @kcontrol: mixer control
2287 * @ucontrol: control element information
2289 * Callback to get the value of a double mixer control that spans 2 registers.
2291 * Returns 0 for success.
2293 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2294 struct snd_ctl_elem_value
*ucontrol
)
2296 struct soc_mixer_control
*mc
=
2297 (struct soc_mixer_control
*)kcontrol
->private_value
;
2298 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2299 unsigned int reg
= mc
->reg
;
2300 unsigned int reg2
= mc
->rreg
;
2301 unsigned int shift
= mc
->shift
;
2303 unsigned int mask
= (1 << fls(max
)) - 1;
2304 unsigned int invert
= mc
->invert
;
2306 ucontrol
->value
.integer
.value
[0] =
2307 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2308 ucontrol
->value
.integer
.value
[1] =
2309 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2311 ucontrol
->value
.integer
.value
[0] =
2312 max
- ucontrol
->value
.integer
.value
[0];
2313 ucontrol
->value
.integer
.value
[1] =
2314 max
- ucontrol
->value
.integer
.value
[1];
2319 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2322 * snd_soc_put_volsw_2r - double mixer set callback
2323 * @kcontrol: mixer control
2324 * @ucontrol: control element information
2326 * Callback to set the value of a double mixer control that spans 2 registers.
2328 * Returns 0 for success.
2330 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2331 struct snd_ctl_elem_value
*ucontrol
)
2333 struct soc_mixer_control
*mc
=
2334 (struct soc_mixer_control
*)kcontrol
->private_value
;
2335 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2336 unsigned int reg
= mc
->reg
;
2337 unsigned int reg2
= mc
->rreg
;
2338 unsigned int shift
= mc
->shift
;
2340 unsigned int mask
= (1 << fls(max
)) - 1;
2341 unsigned int invert
= mc
->invert
;
2343 unsigned int val
, val2
, val_mask
;
2345 val_mask
= mask
<< shift
;
2346 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2347 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2355 val2
= val2
<< shift
;
2357 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2361 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2364 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2367 * snd_soc_info_volsw_s8 - signed mixer info callback
2368 * @kcontrol: mixer control
2369 * @uinfo: control element information
2371 * Callback to provide information about a signed mixer control.
2373 * Returns 0 for success.
2375 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2376 struct snd_ctl_elem_info
*uinfo
)
2378 struct soc_mixer_control
*mc
=
2379 (struct soc_mixer_control
*)kcontrol
->private_value
;
2383 if (!mc
->platform_max
)
2384 mc
->platform_max
= mc
->max
;
2385 platform_max
= mc
->platform_max
;
2387 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2389 uinfo
->value
.integer
.min
= 0;
2390 uinfo
->value
.integer
.max
= platform_max
- min
;
2393 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2396 * snd_soc_get_volsw_s8 - signed mixer get callback
2397 * @kcontrol: mixer control
2398 * @ucontrol: control element information
2400 * Callback to get the value of a signed mixer control.
2402 * Returns 0 for success.
2404 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2405 struct snd_ctl_elem_value
*ucontrol
)
2407 struct soc_mixer_control
*mc
=
2408 (struct soc_mixer_control
*)kcontrol
->private_value
;
2409 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2410 unsigned int reg
= mc
->reg
;
2412 int val
= snd_soc_read(codec
, reg
);
2414 ucontrol
->value
.integer
.value
[0] =
2415 ((signed char)(val
& 0xff))-min
;
2416 ucontrol
->value
.integer
.value
[1] =
2417 ((signed char)((val
>> 8) & 0xff))-min
;
2420 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2423 * snd_soc_put_volsw_sgn - signed mixer put callback
2424 * @kcontrol: mixer control
2425 * @ucontrol: control element information
2427 * Callback to set the value of a signed mixer control.
2429 * Returns 0 for success.
2431 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2432 struct snd_ctl_elem_value
*ucontrol
)
2434 struct soc_mixer_control
*mc
=
2435 (struct soc_mixer_control
*)kcontrol
->private_value
;
2436 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2437 unsigned int reg
= mc
->reg
;
2441 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2442 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2444 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2446 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2449 * snd_soc_limit_volume - Set new limit to an existing volume control.
2451 * @codec: where to look for the control
2452 * @name: Name of the control
2453 * @max: new maximum limit
2455 * Return 0 for success, else error.
2457 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2458 const char *name
, int max
)
2460 struct snd_card
*card
= codec
->card
->snd_card
;
2461 struct snd_kcontrol
*kctl
;
2462 struct soc_mixer_control
*mc
;
2466 /* Sanity check for name and max */
2467 if (unlikely(!name
|| max
<= 0))
2470 list_for_each_entry(kctl
, &card
->controls
, list
) {
2471 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2477 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2478 if (max
<= mc
->max
) {
2479 mc
->platform_max
= max
;
2485 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2488 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2489 * mixer info callback
2490 * @kcontrol: mixer control
2491 * @uinfo: control element information
2493 * Returns 0 for success.
2495 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2496 struct snd_ctl_elem_info
*uinfo
)
2498 struct soc_mixer_control
*mc
=
2499 (struct soc_mixer_control
*)kcontrol
->private_value
;
2503 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2505 uinfo
->value
.integer
.min
= 0;
2506 uinfo
->value
.integer
.max
= max
-min
;
2510 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2513 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2514 * mixer get callback
2515 * @kcontrol: mixer control
2516 * @uinfo: control element information
2518 * Returns 0 for success.
2520 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2521 struct snd_ctl_elem_value
*ucontrol
)
2523 struct soc_mixer_control
*mc
=
2524 (struct soc_mixer_control
*)kcontrol
->private_value
;
2525 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2526 unsigned int mask
= (1<<mc
->shift
)-1;
2528 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2529 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2531 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2532 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2535 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2538 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2539 * mixer put callback
2540 * @kcontrol: mixer control
2541 * @uinfo: control element information
2543 * Returns 0 for success.
2545 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2546 struct snd_ctl_elem_value
*ucontrol
)
2548 struct soc_mixer_control
*mc
=
2549 (struct soc_mixer_control
*)kcontrol
->private_value
;
2550 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2551 unsigned int mask
= (1<<mc
->shift
)-1;
2554 unsigned int val
, valr
, oval
, ovalr
;
2556 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2558 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2561 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2562 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2566 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2570 if (ovalr
!= valr
) {
2571 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2578 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2581 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2583 * @clk_id: DAI specific clock ID
2584 * @freq: new clock frequency in Hz
2585 * @dir: new clock direction - input/output.
2587 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2589 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2590 unsigned int freq
, int dir
)
2592 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2593 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2597 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2600 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2602 * @div_id: DAI specific clock divider ID
2603 * @div: new clock divisor.
2605 * Configures the clock dividers. This is used to derive the best DAI bit and
2606 * frame clocks from the system or master clock. It's best to set the DAI bit
2607 * and frame clocks as low as possible to save system power.
2609 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2610 int div_id
, int div
)
2612 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2613 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2617 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2620 * snd_soc_dai_set_pll - configure DAI PLL.
2622 * @pll_id: DAI specific PLL ID
2623 * @source: DAI specific source for the PLL
2624 * @freq_in: PLL input clock frequency in Hz
2625 * @freq_out: requested PLL output clock frequency in Hz
2627 * Configures and enables PLL to generate output clock based on input clock.
2629 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2630 unsigned int freq_in
, unsigned int freq_out
)
2632 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2633 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2638 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2641 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2643 * @fmt: SND_SOC_DAIFMT_ format value.
2645 * Configures the DAI hardware format and clocking.
2647 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2649 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2650 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2654 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2657 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2659 * @tx_mask: bitmask representing active TX slots.
2660 * @rx_mask: bitmask representing active RX slots.
2661 * @slots: Number of slots in use.
2662 * @slot_width: Width in bits for each slot.
2664 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2667 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2668 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2670 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2671 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2676 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2679 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2681 * @tx_num: how many TX channels
2682 * @tx_slot: pointer to an array which imply the TX slot number channel
2684 * @rx_num: how many RX channels
2685 * @rx_slot: pointer to an array which imply the RX slot number channel
2688 * configure the relationship between channel number and TDM slot number.
2690 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2691 unsigned int tx_num
, unsigned int *tx_slot
,
2692 unsigned int rx_num
, unsigned int *rx_slot
)
2694 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2695 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2700 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2703 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2705 * @tristate: tristate enable
2707 * Tristates the DAI so that others can use it.
2709 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2711 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2712 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2716 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2719 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2721 * @mute: mute enable
2723 * Mutes the DAI DAC.
2725 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2727 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2728 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2732 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2735 * snd_soc_register_card - Register a card with the ASoC core
2737 * @card: Card to register
2739 * Note that currently this is an internal only function: it will be
2740 * exposed to machine drivers after further backporting of ASoC v2
2741 * registration APIs.
2743 static int snd_soc_register_card(struct snd_soc_card
*card
)
2747 if (!card
->name
|| !card
->dev
)
2750 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) * card
->num_links
,
2752 if (card
->rtd
== NULL
)
2755 for (i
= 0; i
< card
->num_links
; i
++)
2756 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2758 INIT_LIST_HEAD(&card
->list
);
2759 card
->instantiated
= 0;
2760 mutex_init(&card
->mutex
);
2762 mutex_lock(&client_mutex
);
2763 list_add(&card
->list
, &card_list
);
2764 snd_soc_instantiate_cards();
2765 mutex_unlock(&client_mutex
);
2767 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2773 * snd_soc_unregister_card - Unregister a card with the ASoC core
2775 * @card: Card to unregister
2777 * Note that currently this is an internal only function: it will be
2778 * exposed to machine drivers after further backporting of ASoC v2
2779 * registration APIs.
2781 static int snd_soc_unregister_card(struct snd_soc_card
*card
)
2783 mutex_lock(&client_mutex
);
2784 list_del(&card
->list
);
2785 mutex_unlock(&client_mutex
);
2786 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2792 * Simplify DAI link configuration by removing ".-1" from device names
2793 * and sanitizing names.
2795 static inline char *fmt_single_name(struct device
*dev
, int *id
)
2797 char *found
, name
[NAME_SIZE
];
2800 if (dev_name(dev
) == NULL
)
2803 strncpy(name
, dev_name(dev
), NAME_SIZE
);
2805 /* are we a "%s.%d" name (platform and SPI components) */
2806 found
= strstr(name
, dev
->driver
->name
);
2809 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2811 /* discard ID from name if ID == -1 */
2813 found
[strlen(dev
->driver
->name
)] = '\0';
2817 /* I2C component devices are named "bus-addr" */
2818 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2819 char tmp
[NAME_SIZE
];
2821 /* create unique ID number from I2C addr and bus */
2822 *id
= ((id1
&& 0xffff) << 16) + id2
;
2824 /* sanitize component name for DAI link creation */
2825 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2826 strncpy(name
, tmp
, NAME_SIZE
);
2831 return kstrdup(name
, GFP_KERNEL
);
2835 * Simplify DAI link naming for single devices with multiple DAIs by removing
2836 * any ".-1" and using the DAI name (instead of device name).
2838 static inline char *fmt_multiple_name(struct device
*dev
,
2839 struct snd_soc_dai_driver
*dai_drv
)
2841 if (dai_drv
->name
== NULL
) {
2842 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2847 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2851 * snd_soc_register_dai - Register a DAI with the ASoC core
2853 * @dai: DAI to register
2855 int snd_soc_register_dai(struct device
*dev
,
2856 struct snd_soc_dai_driver
*dai_drv
)
2858 struct snd_soc_dai
*dai
;
2860 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
2862 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2866 /* create DAI component name */
2867 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2868 if (dai
->name
== NULL
) {
2874 dai
->driver
= dai_drv
;
2875 if (!dai
->driver
->ops
)
2876 dai
->driver
->ops
= &null_dai_ops
;
2878 mutex_lock(&client_mutex
);
2879 list_add(&dai
->list
, &dai_list
);
2880 snd_soc_instantiate_cards();
2881 mutex_unlock(&client_mutex
);
2883 pr_debug("Registered DAI '%s'\n", dai
->name
);
2887 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
2890 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
2892 * @dai: DAI to unregister
2894 void snd_soc_unregister_dai(struct device
*dev
)
2896 struct snd_soc_dai
*dai
;
2898 list_for_each_entry(dai
, &dai_list
, list
) {
2899 if (dev
== dai
->dev
)
2905 mutex_lock(&client_mutex
);
2906 list_del(&dai
->list
);
2907 mutex_unlock(&client_mutex
);
2909 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
2913 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
2916 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
2918 * @dai: Array of DAIs to register
2919 * @count: Number of DAIs
2921 int snd_soc_register_dais(struct device
*dev
,
2922 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
2924 struct snd_soc_dai
*dai
;
2927 dev_dbg(dev
, "dai register %s #%d\n", dev_name(dev
), count
);
2929 for (i
= 0; i
< count
; i
++) {
2931 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2935 /* create DAI component name */
2936 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
2937 if (dai
->name
== NULL
) {
2945 dai
->driver
= &dai_drv
[i
];
2946 if (!dai
->driver
->ops
)
2947 dai
->driver
->ops
= &null_dai_ops
;
2949 mutex_lock(&client_mutex
);
2950 list_add(&dai
->list
, &dai_list
);
2951 mutex_unlock(&client_mutex
);
2953 pr_debug("Registered DAI '%s'\n", dai
->name
);
2956 snd_soc_instantiate_cards();
2960 for (i
--; i
>= 0; i
--)
2961 snd_soc_unregister_dai(dev
);
2965 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
2968 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
2970 * @dai: Array of DAIs to unregister
2971 * @count: Number of DAIs
2973 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
2977 for (i
= 0; i
< count
; i
++)
2978 snd_soc_unregister_dai(dev
);
2980 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
2983 * snd_soc_register_platform - Register a platform with the ASoC core
2985 * @platform: platform to register
2987 int snd_soc_register_platform(struct device
*dev
,
2988 struct snd_soc_platform_driver
*platform_drv
)
2990 struct snd_soc_platform
*platform
;
2992 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
2994 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
2995 if (platform
== NULL
)
2998 /* create platform component name */
2999 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3000 if (platform
->name
== NULL
) {
3005 platform
->dev
= dev
;
3006 platform
->driver
= platform_drv
;
3008 mutex_lock(&client_mutex
);
3009 list_add(&platform
->list
, &platform_list
);
3010 snd_soc_instantiate_cards();
3011 mutex_unlock(&client_mutex
);
3013 pr_debug("Registered platform '%s'\n", platform
->name
);
3017 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3020 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3022 * @platform: platform to unregister
3024 void snd_soc_unregister_platform(struct device
*dev
)
3026 struct snd_soc_platform
*platform
;
3028 list_for_each_entry(platform
, &platform_list
, list
) {
3029 if (dev
== platform
->dev
)
3035 mutex_lock(&client_mutex
);
3036 list_del(&platform
->list
);
3037 mutex_unlock(&client_mutex
);
3039 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3040 kfree(platform
->name
);
3043 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3045 static u64 codec_format_map
[] = {
3046 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3047 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3048 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3049 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3050 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3051 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3052 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3053 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3054 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3055 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3056 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3057 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3058 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3059 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3060 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3061 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3064 /* Fix up the DAI formats for endianness: codecs don't actually see
3065 * the endianness of the data but we're using the CPU format
3066 * definitions which do need to include endianness so we ensure that
3067 * codec DAIs always have both big and little endian variants set.
3069 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3073 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3074 if (stream
->formats
& codec_format_map
[i
])
3075 stream
->formats
|= codec_format_map
[i
];
3079 * snd_soc_register_codec - Register a codec with the ASoC core
3081 * @codec: codec to register
3083 int snd_soc_register_codec(struct device
*dev
,
3084 struct snd_soc_codec_driver
*codec_drv
,
3085 struct snd_soc_dai_driver
*dai_drv
, int num_dai
)
3087 struct snd_soc_codec
*codec
;
3090 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3092 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3096 /* create CODEC component name */
3097 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3098 if (codec
->name
== NULL
) {
3103 /* allocate CODEC register cache */
3104 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3106 if (codec_drv
->reg_cache_default
)
3107 codec
->reg_cache
= kmemdup(codec_drv
->reg_cache_default
,
3108 codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
, GFP_KERNEL
);
3110 codec
->reg_cache
= kzalloc(codec_drv
->reg_cache_size
*
3111 codec_drv
->reg_word_size
, GFP_KERNEL
);
3113 if (codec
->reg_cache
== NULL
) {
3121 codec
->driver
= codec_drv
;
3122 codec
->bias_level
= SND_SOC_BIAS_OFF
;
3123 codec
->num_dai
= num_dai
;
3124 mutex_init(&codec
->mutex
);
3125 INIT_LIST_HEAD(&codec
->dapm_widgets
);
3126 INIT_LIST_HEAD(&codec
->dapm_paths
);
3128 for (i
= 0; i
< num_dai
; i
++) {
3129 fixup_codec_formats(&dai_drv
[i
].playback
);
3130 fixup_codec_formats(&dai_drv
[i
].capture
);
3134 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3138 mutex_lock(&client_mutex
);
3139 list_add(&codec
->list
, &codec_list
);
3140 snd_soc_instantiate_cards();
3141 mutex_unlock(&client_mutex
);
3143 pr_debug("Registered codec '%s'\n", codec
->name
);
3147 for (i
--; i
>= 0; i
--)
3148 snd_soc_unregister_dai(dev
);
3150 if (codec
->reg_cache
)
3151 kfree(codec
->reg_cache
);
3156 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3159 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3161 * @codec: codec to unregister
3163 void snd_soc_unregister_codec(struct device
*dev
)
3165 struct snd_soc_codec
*codec
;
3168 list_for_each_entry(codec
, &codec_list
, list
) {
3169 if (dev
== codec
->dev
)
3175 for (i
= 0; i
< codec
->num_dai
; i
++)
3176 snd_soc_unregister_dai(dev
);
3178 mutex_lock(&client_mutex
);
3179 list_del(&codec
->list
);
3180 mutex_unlock(&client_mutex
);
3182 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3184 if (codec
->reg_cache
)
3185 kfree(codec
->reg_cache
);
3188 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3190 static int __init
snd_soc_init(void)
3192 #ifdef CONFIG_DEBUG_FS
3193 debugfs_root
= debugfs_create_dir("asoc", NULL
);
3194 if (IS_ERR(debugfs_root
) || !debugfs_root
) {
3196 "ASoC: Failed to create debugfs directory\n");
3197 debugfs_root
= NULL
;
3201 return platform_driver_register(&soc_driver
);
3204 static void __exit
snd_soc_exit(void)
3206 #ifdef CONFIG_DEBUG_FS
3207 debugfs_remove_recursive(debugfs_root
);
3209 platform_driver_unregister(&soc_driver
);
3212 module_init(snd_soc_init
);
3213 module_exit(snd_soc_exit
);
3215 /* Module information */
3216 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3217 MODULE_DESCRIPTION("ALSA SoC Core");
3218 MODULE_LICENSE("GPL");
3219 MODULE_ALIAS("platform:soc-audio");