Merge branch 'for-2.6.37' into for-2.6.38
[linux-2.6-block.git] / sound / soc / soc-core.c
CommitLineData
db2a4165
FM
1/*
2 * soc-core.c -- ALSA SoC Audio Layer
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
0664d888 5 * Copyright 2005 Openedhand Ltd.
f0fba2ad
LG
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
0664d888 8 *
d331124d 9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
0664d888
LG
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
db2a4165
FM
12 *
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.
17 *
db2a4165
FM
18 * TODO:
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
23 */
24
25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/init.h>
28#include <linux/delay.h>
29#include <linux/pm.h>
30#include <linux/bitops.h>
12ef193d 31#include <linux/debugfs.h>
db2a4165 32#include <linux/platform_device.h>
5a0e3ad6 33#include <linux/slab.h>
474828a4 34#include <sound/ac97_codec.h>
db2a4165 35#include <sound/core.h>
3028eb8c 36#include <sound/jack.h>
db2a4165
FM
37#include <sound/pcm.h>
38#include <sound/pcm_params.h>
39#include <sound/soc.h>
db2a4165
FM
40#include <sound/initval.h>
41
a8b1d34f
MB
42#define CREATE_TRACE_POINTS
43#include <trace/events/asoc.h>
44
f0fba2ad
LG
45#define NAME_SIZE 32
46
db2a4165 47static DEFINE_MUTEX(pcm_mutex);
db2a4165
FM
48static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
49
384c89e2
MB
50#ifdef CONFIG_DEBUG_FS
51static struct dentry *debugfs_root;
52#endif
53
c5af3a2e
MB
54static DEFINE_MUTEX(client_mutex);
55static LIST_HEAD(card_list);
9115171a 56static LIST_HEAD(dai_list);
12a48a8c 57static LIST_HEAD(platform_list);
0d0cf00a 58static LIST_HEAD(codec_list);
c5af3a2e
MB
59
60static int snd_soc_register_card(struct snd_soc_card *card);
61static int snd_soc_unregister_card(struct snd_soc_card *card);
f0fba2ad 62static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
c5af3a2e 63
db2a4165
FM
64/*
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
68 */
69static int pmdown_time = 5000;
70module_param(pmdown_time, int, 0);
71MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72
965ac42c
LG
73/*
74 * This function forces any delayed work to be queued and run.
75 */
76static int run_delayed_work(struct delayed_work *dwork)
77{
78 int ret;
79
80 /* cancel any work waiting to be queued. */
81 ret = cancel_delayed_work(dwork);
82
83 /* if there was any work waiting then we run it now and
84 * wait for it's completion */
85 if (ret) {
86 schedule_delayed_work(dwork, 0);
87 flush_scheduled_work();
88 }
89 return ret;
90}
91
2624d5fa
MB
92/* codec register dump */
93static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
94{
5164d74d 95 int ret, i, step = 1, count = 0;
2624d5fa 96
f0fba2ad 97 if (!codec->driver->reg_cache_size)
2624d5fa
MB
98 return 0;
99
f0fba2ad
LG
100 if (codec->driver->reg_cache_step)
101 step = codec->driver->reg_cache_step;
2624d5fa
MB
102
103 count += sprintf(buf, "%s registers\n", codec->name);
f0fba2ad
LG
104 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
105 if (codec->driver->readable_register && !codec->driver->readable_register(i))
2624d5fa
MB
106 continue;
107
108 count += sprintf(buf + count, "%2x: ", i);
109 if (count >= PAGE_SIZE - 1)
110 break;
111
f0fba2ad
LG
112 if (codec->driver->display_register) {
113 count += codec->driver->display_register(codec, buf + count,
2624d5fa 114 PAGE_SIZE - count, i);
5164d74d
MB
115 } else {
116 /* If the read fails it's almost certainly due to
117 * the register being volatile and the device being
118 * powered off.
119 */
f0fba2ad 120 ret = codec->driver->read(codec, i);
5164d74d
MB
121 if (ret >= 0)
122 count += snprintf(buf + count,
123 PAGE_SIZE - count,
124 "%4x", ret);
125 else
126 count += snprintf(buf + count,
127 PAGE_SIZE - count,
128 "<no data: %d>", ret);
129 }
2624d5fa
MB
130
131 if (count >= PAGE_SIZE - 1)
132 break;
133
134 count += snprintf(buf + count, PAGE_SIZE - count, "\n");
135 if (count >= PAGE_SIZE - 1)
136 break;
137 }
138
139 /* Truncate count; min() would cause a warning */
140 if (count >= PAGE_SIZE)
141 count = PAGE_SIZE - 1;
142
143 return count;
144}
145static ssize_t codec_reg_show(struct device *dev,
146 struct device_attribute *attr, char *buf)
147{
f0fba2ad
LG
148 struct snd_soc_pcm_runtime *rtd =
149 container_of(dev, struct snd_soc_pcm_runtime, dev);
150
151 return soc_codec_reg_show(rtd->codec, buf);
2624d5fa
MB
152}
153
154static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
155
dbe21408
MB
156static ssize_t pmdown_time_show(struct device *dev,
157 struct device_attribute *attr, char *buf)
158{
f0fba2ad
LG
159 struct snd_soc_pcm_runtime *rtd =
160 container_of(dev, struct snd_soc_pcm_runtime, dev);
dbe21408 161
f0fba2ad 162 return sprintf(buf, "%ld\n", rtd->pmdown_time);
dbe21408
MB
163}
164
165static ssize_t pmdown_time_set(struct device *dev,
166 struct device_attribute *attr,
167 const char *buf, size_t count)
168{
f0fba2ad
LG
169 struct snd_soc_pcm_runtime *rtd =
170 container_of(dev, struct snd_soc_pcm_runtime, dev);
c593b520 171 int ret;
dbe21408 172
c593b520
MB
173 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
174 if (ret)
175 return ret;
dbe21408
MB
176
177 return count;
178}
179
180static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
181
2624d5fa
MB
182#ifdef CONFIG_DEBUG_FS
183static int codec_reg_open_file(struct inode *inode, struct file *file)
184{
185 file->private_data = inode->i_private;
186 return 0;
187}
188
189static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
190 size_t count, loff_t *ppos)
191{
192 ssize_t ret;
193 struct snd_soc_codec *codec = file->private_data;
194 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
195 if (!buf)
196 return -ENOMEM;
197 ret = soc_codec_reg_show(codec, buf);
198 if (ret >= 0)
199 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
200 kfree(buf);
201 return ret;
202}
203
204static ssize_t codec_reg_write_file(struct file *file,
205 const char __user *user_buf, size_t count, loff_t *ppos)
206{
207 char buf[32];
208 int buf_size;
209 char *start = buf;
210 unsigned long reg, value;
211 int step = 1;
212 struct snd_soc_codec *codec = file->private_data;
213
214 buf_size = min(count, (sizeof(buf)-1));
215 if (copy_from_user(buf, user_buf, buf_size))
216 return -EFAULT;
217 buf[buf_size] = 0;
218
f0fba2ad
LG
219 if (codec->driver->reg_cache_step)
220 step = codec->driver->reg_cache_step;
2624d5fa
MB
221
222 while (*start == ' ')
223 start++;
224 reg = simple_strtoul(start, &start, 16);
f0fba2ad 225 if ((reg >= codec->driver->reg_cache_size) || (reg % step))
2624d5fa
MB
226 return -EINVAL;
227 while (*start == ' ')
228 start++;
229 if (strict_strtoul(start, 16, &value))
230 return -EINVAL;
f0fba2ad 231 codec->driver->write(codec, reg, value);
2624d5fa
MB
232 return buf_size;
233}
234
235static const struct file_operations codec_reg_fops = {
236 .open = codec_reg_open_file,
237 .read = codec_reg_read_file,
238 .write = codec_reg_write_file,
6038f373 239 .llseek = default_llseek,
2624d5fa
MB
240};
241
242static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
243{
d6ce4cf3
JN
244 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
245
246 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
247 debugfs_card_root);
2624d5fa
MB
248 if (!codec->debugfs_codec_root) {
249 printk(KERN_WARNING
250 "ASoC: Failed to create codec debugfs directory\n");
251 return;
252 }
253
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)
258 printk(KERN_WARNING
259 "ASoC: Failed to create codec register debugfs file\n");
260
ce6120cc 261 codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
2624d5fa 262 codec->debugfs_codec_root);
ce6120cc 263 if (!codec->dapm.debugfs_dapm)
2624d5fa
MB
264 printk(KERN_WARNING
265 "Failed to create DAPM debugfs directory\n");
266
ce6120cc 267 snd_soc_dapm_debugfs_init(&codec->dapm);
2624d5fa
MB
268}
269
270static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
271{
272 debugfs_remove_recursive(codec->debugfs_codec_root);
273}
274
c3c5a19a
MB
275static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
276 size_t count, loff_t *ppos)
277{
278 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 279 ssize_t len, ret = 0;
c3c5a19a
MB
280 struct snd_soc_codec *codec;
281
282 if (!buf)
283 return -ENOMEM;
284
2b194f9d
MB
285 list_for_each_entry(codec, &codec_list, list) {
286 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
287 codec->name);
288 if (len >= 0)
289 ret += len;
290 if (ret > PAGE_SIZE) {
291 ret = PAGE_SIZE;
292 break;
293 }
294 }
c3c5a19a
MB
295
296 if (ret >= 0)
297 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
298
299 kfree(buf);
300
301 return ret;
302}
303
304static const struct file_operations codec_list_fops = {
305 .read = codec_list_read_file,
306 .llseek = default_llseek,/* read accesses f_pos */
307};
308
f3208780
MB
309static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
310 size_t count, loff_t *ppos)
311{
312 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 313 ssize_t len, ret = 0;
f3208780
MB
314 struct snd_soc_dai *dai;
315
316 if (!buf)
317 return -ENOMEM;
318
2b194f9d
MB
319 list_for_each_entry(dai, &dai_list, list) {
320 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
321 if (len >= 0)
322 ret += len;
323 if (ret > PAGE_SIZE) {
324 ret = PAGE_SIZE;
325 break;
326 }
327 }
f3208780 328
2b194f9d 329 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
f3208780
MB
330
331 kfree(buf);
332
333 return ret;
334}
335
336static const struct file_operations dai_list_fops = {
337 .read = dai_list_read_file,
338 .llseek = default_llseek,/* read accesses f_pos */
339};
340
19c7ac27
MB
341static ssize_t platform_list_read_file(struct file *file,
342 char __user *user_buf,
343 size_t count, loff_t *ppos)
344{
345 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 346 ssize_t len, ret = 0;
19c7ac27
MB
347 struct snd_soc_platform *platform;
348
349 if (!buf)
350 return -ENOMEM;
351
2b194f9d
MB
352 list_for_each_entry(platform, &platform_list, list) {
353 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
354 platform->name);
355 if (len >= 0)
356 ret += len;
357 if (ret > PAGE_SIZE) {
358 ret = PAGE_SIZE;
359 break;
360 }
361 }
19c7ac27 362
2b194f9d 363 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
19c7ac27
MB
364
365 kfree(buf);
366
367 return ret;
368}
369
370static const struct file_operations platform_list_fops = {
371 .read = platform_list_read_file,
372 .llseek = default_llseek,/* read accesses f_pos */
373};
374
a6052154
JN
375static void soc_init_card_debugfs(struct snd_soc_card *card)
376{
377 card->debugfs_card_root = debugfs_create_dir(card->name,
378 debugfs_root);
3a45b867 379 if (!card->debugfs_card_root) {
a6052154
JN
380 dev_warn(card->dev,
381 "ASoC: Failed to create codec debugfs directory\n");
3a45b867
JN
382 return;
383 }
384
385 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
386 card->debugfs_card_root,
387 &card->pop_time);
388 if (!card->debugfs_pop_time)
389 dev_warn(card->dev,
390 "Failed to create pop time debugfs file\n");
a6052154
JN
391}
392
393static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
394{
395 debugfs_remove_recursive(card->debugfs_card_root);
396}
397
2624d5fa
MB
398#else
399
400static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
401{
402}
403
404static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
405{
406}
b95fccbc
AL
407
408static inline void soc_init_card_debugfs(struct snd_soc_card *card)
409{
410}
411
412static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
413{
414}
2624d5fa
MB
415#endif
416
db2a4165
FM
417#ifdef CONFIG_SND_SOC_AC97_BUS
418/* unregister ac97 codec */
419static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
420{
421 if (codec->ac97->dev.bus)
422 device_unregister(&codec->ac97->dev);
423 return 0;
424}
425
426/* stop no dev release warning */
427static void soc_ac97_device_release(struct device *dev){}
428
429/* register ac97 codec to bus */
430static int soc_ac97_dev_register(struct snd_soc_codec *codec)
431{
432 int err;
433
434 codec->ac97->dev.bus = &ac97_bus_type;
4ac5c61f 435 codec->ac97->dev.parent = codec->card->dev;
db2a4165
FM
436 codec->ac97->dev.release = soc_ac97_device_release;
437
bb072bf0 438 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
f0fba2ad 439 codec->card->snd_card->number, 0, codec->name);
db2a4165
FM
440 err = device_register(&codec->ac97->dev);
441 if (err < 0) {
442 snd_printk(KERN_ERR "Can't register ac97 bus\n");
443 codec->ac97->dev.bus = NULL;
444 return err;
445 }
446 return 0;
447}
448#endif
449
06f409d7
MB
450static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
451{
452 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
453 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
454 struct snd_soc_dai *codec_dai = rtd->codec_dai;
06f409d7
MB
455 int ret;
456
f0fba2ad
LG
457 if (codec_dai->driver->symmetric_rates || cpu_dai->driver->symmetric_rates ||
458 rtd->dai_link->symmetric_rates) {
459 dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n",
460 rtd->rate);
06f409d7
MB
461
462 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
463 SNDRV_PCM_HW_PARAM_RATE,
f0fba2ad
LG
464 rtd->rate,
465 rtd->rate);
06f409d7 466 if (ret < 0) {
f0fba2ad 467 dev_err(&rtd->dev,
06f409d7
MB
468 "Unable to apply rate symmetry constraint: %d\n", ret);
469 return ret;
470 }
471 }
472
473 return 0;
474}
475
db2a4165
FM
476/*
477 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
478 * then initialized and any private data can be allocated. This also calls
479 * startup for the cpu DAI, platform, machine and codec DAI.
480 */
481static int soc_pcm_open(struct snd_pcm_substream *substream)
482{
483 struct snd_soc_pcm_runtime *rtd = substream->private_data;
db2a4165 484 struct snd_pcm_runtime *runtime = substream->runtime;
f0fba2ad
LG
485 struct snd_soc_platform *platform = rtd->platform;
486 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
487 struct snd_soc_dai *codec_dai = rtd->codec_dai;
488 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
489 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
db2a4165
FM
490 int ret = 0;
491
492 mutex_lock(&pcm_mutex);
493
494 /* startup the audio subsystem */
f0fba2ad
LG
495 if (cpu_dai->driver->ops->startup) {
496 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
db2a4165
FM
497 if (ret < 0) {
498 printk(KERN_ERR "asoc: can't open interface %s\n",
cb666e5b 499 cpu_dai->name);
db2a4165
FM
500 goto out;
501 }
502 }
503
f0fba2ad
LG
504 if (platform->driver->ops->open) {
505 ret = platform->driver->ops->open(substream);
db2a4165
FM
506 if (ret < 0) {
507 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
508 goto platform_err;
509 }
510 }
511
f0fba2ad
LG
512 if (codec_dai->driver->ops->startup) {
513 ret = codec_dai->driver->ops->startup(substream, codec_dai);
db2a4165 514 if (ret < 0) {
cb666e5b
LG
515 printk(KERN_ERR "asoc: can't open codec %s\n",
516 codec_dai->name);
517 goto codec_dai_err;
db2a4165
FM
518 }
519 }
520
f0fba2ad
LG
521 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
522 ret = rtd->dai_link->ops->startup(substream);
db2a4165 523 if (ret < 0) {
f0fba2ad 524 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
cb666e5b 525 goto machine_err;
db2a4165
FM
526 }
527 }
528
a00f90f9 529 /* Check that the codec and cpu DAIs are compatible */
db2a4165
FM
530 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
531 runtime->hw.rate_min =
f0fba2ad
LG
532 max(codec_dai_drv->playback.rate_min,
533 cpu_dai_drv->playback.rate_min);
db2a4165 534 runtime->hw.rate_max =
f0fba2ad
LG
535 min(codec_dai_drv->playback.rate_max,
536 cpu_dai_drv->playback.rate_max);
db2a4165 537 runtime->hw.channels_min =
f0fba2ad
LG
538 max(codec_dai_drv->playback.channels_min,
539 cpu_dai_drv->playback.channels_min);
db2a4165 540 runtime->hw.channels_max =
f0fba2ad
LG
541 min(codec_dai_drv->playback.channels_max,
542 cpu_dai_drv->playback.channels_max);
cb666e5b 543 runtime->hw.formats =
f0fba2ad 544 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
cb666e5b 545 runtime->hw.rates =
f0fba2ad
LG
546 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
547 if (codec_dai_drv->playback.rates
d9ad6296 548 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad
LG
549 runtime->hw.rates |= cpu_dai_drv->playback.rates;
550 if (cpu_dai_drv->playback.rates
d9ad6296 551 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad 552 runtime->hw.rates |= codec_dai_drv->playback.rates;
db2a4165
FM
553 } else {
554 runtime->hw.rate_min =
f0fba2ad
LG
555 max(codec_dai_drv->capture.rate_min,
556 cpu_dai_drv->capture.rate_min);
db2a4165 557 runtime->hw.rate_max =
f0fba2ad
LG
558 min(codec_dai_drv->capture.rate_max,
559 cpu_dai_drv->capture.rate_max);
db2a4165 560 runtime->hw.channels_min =
f0fba2ad
LG
561 max(codec_dai_drv->capture.channels_min,
562 cpu_dai_drv->capture.channels_min);
db2a4165 563 runtime->hw.channels_max =
f0fba2ad
LG
564 min(codec_dai_drv->capture.channels_max,
565 cpu_dai_drv->capture.channels_max);
cb666e5b 566 runtime->hw.formats =
f0fba2ad 567 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
cb666e5b 568 runtime->hw.rates =
f0fba2ad
LG
569 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
570 if (codec_dai_drv->capture.rates
d9ad6296 571 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad
LG
572 runtime->hw.rates |= cpu_dai_drv->capture.rates;
573 if (cpu_dai_drv->capture.rates
d9ad6296 574 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad 575 runtime->hw.rates |= codec_dai_drv->capture.rates;
db2a4165
FM
576 }
577
578 snd_pcm_limit_hw_rates(runtime);
579 if (!runtime->hw.rates) {
580 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
cb666e5b 581 codec_dai->name, cpu_dai->name);
bb1c0478 582 goto config_err;
db2a4165
FM
583 }
584 if (!runtime->hw.formats) {
585 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
cb666e5b 586 codec_dai->name, cpu_dai->name);
bb1c0478 587 goto config_err;
db2a4165
FM
588 }
589 if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
590 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
f0fba2ad 591 codec_dai->name, cpu_dai->name);
bb1c0478 592 goto config_err;
db2a4165
FM
593 }
594
06f409d7
MB
595 /* Symmetry only applies if we've already got an active stream. */
596 if (cpu_dai->active || codec_dai->active) {
597 ret = soc_pcm_apply_symmetry(substream);
598 if (ret != 0)
bb1c0478 599 goto config_err;
06f409d7
MB
600 }
601
f0fba2ad
LG
602 pr_debug("asoc: %s <-> %s info:\n",
603 codec_dai->name, cpu_dai->name);
f24368c2
MB
604 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
605 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
606 runtime->hw.channels_max);
607 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
608 runtime->hw.rate_max);
db2a4165 609
14dc5734 610 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
f0fba2ad
LG
611 cpu_dai->playback_active++;
612 codec_dai->playback_active++;
14dc5734 613 } else {
f0fba2ad
LG
614 cpu_dai->capture_active++;
615 codec_dai->capture_active++;
14dc5734
JB
616 }
617 cpu_dai->active++;
618 codec_dai->active++;
f0fba2ad 619 rtd->codec->active++;
db2a4165
FM
620 mutex_unlock(&pcm_mutex);
621 return 0;
622
bb1c0478 623config_err:
f0fba2ad
LG
624 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
625 rtd->dai_link->ops->shutdown(substream);
db2a4165 626
bb1c0478 627machine_err:
f0fba2ad
LG
628 if (codec_dai->driver->ops->shutdown)
629 codec_dai->driver->ops->shutdown(substream, codec_dai);
bb1c0478 630
cb666e5b 631codec_dai_err:
f0fba2ad
LG
632 if (platform->driver->ops->close)
633 platform->driver->ops->close(substream);
db2a4165
FM
634
635platform_err:
f0fba2ad
LG
636 if (cpu_dai->driver->ops->shutdown)
637 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
db2a4165
FM
638out:
639 mutex_unlock(&pcm_mutex);
640 return ret;
641}
642
643/*
3a4fa0a2 644 * Power down the audio subsystem pmdown_time msecs after close is called.
db2a4165
FM
645 * This is to ensure there are no pops or clicks in between any music tracks
646 * due to DAPM power cycling.
647 */
4484bb2e 648static void close_delayed_work(struct work_struct *work)
db2a4165 649{
f0fba2ad
LG
650 struct snd_soc_pcm_runtime *rtd =
651 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
652 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM
653
654 mutex_lock(&pcm_mutex);
f0fba2ad
LG
655
656 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
657 codec_dai->driver->playback.stream_name,
658 codec_dai->playback_active ? "active" : "inactive",
659 codec_dai->pop_wait ? "yes" : "no");
660
661 /* are we waiting on this codec DAI stream */
662 if (codec_dai->pop_wait == 1) {
663 codec_dai->pop_wait = 0;
664 snd_soc_dapm_stream_event(rtd,
665 codec_dai->driver->playback.stream_name,
666 SND_SOC_DAPM_STREAM_STOP);
db2a4165 667 }
f0fba2ad 668
db2a4165
FM
669 mutex_unlock(&pcm_mutex);
670}
671
672/*
673 * Called by ALSA when a PCM substream is closed. Private data can be
674 * freed here. The cpu DAI, codec DAI, machine and platform are also
675 * shutdown.
676 */
677static int soc_codec_close(struct snd_pcm_substream *substream)
678{
679 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
680 struct snd_soc_platform *platform = rtd->platform;
681 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
682 struct snd_soc_dai *codec_dai = rtd->codec_dai;
683 struct snd_soc_codec *codec = rtd->codec;
db2a4165
FM
684
685 mutex_lock(&pcm_mutex);
686
14dc5734 687 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
f0fba2ad
LG
688 cpu_dai->playback_active--;
689 codec_dai->playback_active--;
14dc5734 690 } else {
f0fba2ad
LG
691 cpu_dai->capture_active--;
692 codec_dai->capture_active--;
db2a4165 693 }
14dc5734
JB
694
695 cpu_dai->active--;
696 codec_dai->active--;
db2a4165
FM
697 codec->active--;
698
6010b2da
MB
699 /* Muting the DAC suppresses artifacts caused during digital
700 * shutdown, for example from stopping clocks.
701 */
702 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
703 snd_soc_dai_digital_mute(codec_dai, 1);
704
f0fba2ad
LG
705 if (cpu_dai->driver->ops->shutdown)
706 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
db2a4165 707
f0fba2ad
LG
708 if (codec_dai->driver->ops->shutdown)
709 codec_dai->driver->ops->shutdown(substream, codec_dai);
db2a4165 710
f0fba2ad
LG
711 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
712 rtd->dai_link->ops->shutdown(substream);
db2a4165 713
f0fba2ad
LG
714 if (platform->driver->ops->close)
715 platform->driver->ops->close(substream);
716 cpu_dai->runtime = NULL;
db2a4165
FM
717
718 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
719 /* start delayed pop wq here for playback streams */
cb666e5b 720 codec_dai->pop_wait = 1;
f0fba2ad
LG
721 schedule_delayed_work(&rtd->delayed_work,
722 msecs_to_jiffies(rtd->pmdown_time));
db2a4165
FM
723 } else {
724 /* capture streams can be powered down now */
f0fba2ad
LG
725 snd_soc_dapm_stream_event(rtd,
726 codec_dai->driver->capture.stream_name,
0b4d221b 727 SND_SOC_DAPM_STREAM_STOP);
db2a4165
FM
728 }
729
730 mutex_unlock(&pcm_mutex);
731 return 0;
732}
733
734/*
735 * Called by ALSA when the PCM substream is prepared, can set format, sample
736 * rate, etc. This function is non atomic and can be called multiple times,
737 * it can refer to the runtime info.
738 */
739static int soc_pcm_prepare(struct snd_pcm_substream *substream)
740{
741 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
742 struct snd_soc_platform *platform = rtd->platform;
743 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
744 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM
745 int ret = 0;
746
747 mutex_lock(&pcm_mutex);
cb666e5b 748
f0fba2ad
LG
749 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
750 ret = rtd->dai_link->ops->prepare(substream);
cb666e5b
LG
751 if (ret < 0) {
752 printk(KERN_ERR "asoc: machine prepare error\n");
753 goto out;
754 }
755 }
756
f0fba2ad
LG
757 if (platform->driver->ops->prepare) {
758 ret = platform->driver->ops->prepare(substream);
a71a468a
LG
759 if (ret < 0) {
760 printk(KERN_ERR "asoc: platform prepare error\n");
db2a4165 761 goto out;
a71a468a 762 }
db2a4165
FM
763 }
764
f0fba2ad
LG
765 if (codec_dai->driver->ops->prepare) {
766 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
a71a468a
LG
767 if (ret < 0) {
768 printk(KERN_ERR "asoc: codec DAI prepare error\n");
db2a4165 769 goto out;
a71a468a 770 }
db2a4165
FM
771 }
772
f0fba2ad
LG
773 if (cpu_dai->driver->ops->prepare) {
774 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
cb666e5b
LG
775 if (ret < 0) {
776 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
777 goto out;
778 }
779 }
db2a4165 780
d45f6219
MB
781 /* cancel any delayed stream shutdown that is pending */
782 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
783 codec_dai->pop_wait) {
784 codec_dai->pop_wait = 0;
f0fba2ad 785 cancel_delayed_work(&rtd->delayed_work);
d45f6219 786 }
db2a4165 787
452c5eaa 788 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
f0fba2ad
LG
789 snd_soc_dapm_stream_event(rtd,
790 codec_dai->driver->playback.stream_name,
452c5eaa
MB
791 SND_SOC_DAPM_STREAM_START);
792 else
f0fba2ad
LG
793 snd_soc_dapm_stream_event(rtd,
794 codec_dai->driver->capture.stream_name,
452c5eaa 795 SND_SOC_DAPM_STREAM_START);
8c6529db 796
452c5eaa 797 snd_soc_dai_digital_mute(codec_dai, 0);
db2a4165
FM
798
799out:
800 mutex_unlock(&pcm_mutex);
801 return ret;
802}
803
804/*
805 * Called by ALSA when the hardware params are set by application. This
806 * function can also be called multiple times and can allocate buffers
807 * (using snd_pcm_lib_* ). It's non-atomic.
808 */
809static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
810 struct snd_pcm_hw_params *params)
811{
812 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
813 struct snd_soc_platform *platform = rtd->platform;
814 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
815 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM
816 int ret = 0;
817
818 mutex_lock(&pcm_mutex);
819
f0fba2ad
LG
820 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
821 ret = rtd->dai_link->ops->hw_params(substream, params);
cb666e5b
LG
822 if (ret < 0) {
823 printk(KERN_ERR "asoc: machine hw_params failed\n");
db2a4165 824 goto out;
cb666e5b 825 }
db2a4165
FM
826 }
827
f0fba2ad
LG
828 if (codec_dai->driver->ops->hw_params) {
829 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
db2a4165
FM
830 if (ret < 0) {
831 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
cb666e5b
LG
832 codec_dai->name);
833 goto codec_err;
db2a4165
FM
834 }
835 }
836
f0fba2ad
LG
837 if (cpu_dai->driver->ops->hw_params) {
838 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
db2a4165 839 if (ret < 0) {
3ff3f64b 840 printk(KERN_ERR "asoc: interface %s hw params failed\n",
cb666e5b 841 cpu_dai->name);
db2a4165
FM
842 goto interface_err;
843 }
844 }
845
f0fba2ad
LG
846 if (platform->driver->ops->hw_params) {
847 ret = platform->driver->ops->hw_params(substream, params);
db2a4165 848 if (ret < 0) {
3ff3f64b 849 printk(KERN_ERR "asoc: platform %s hw params failed\n",
db2a4165
FM
850 platform->name);
851 goto platform_err;
852 }
853 }
854
f0fba2ad 855 rtd->rate = params_rate(params);
06f409d7 856
db2a4165
FM
857out:
858 mutex_unlock(&pcm_mutex);
859 return ret;
860
db2a4165 861platform_err:
f0fba2ad
LG
862 if (cpu_dai->driver->ops->hw_free)
863 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
db2a4165
FM
864
865interface_err:
f0fba2ad
LG
866 if (codec_dai->driver->ops->hw_free)
867 codec_dai->driver->ops->hw_free(substream, codec_dai);
cb666e5b
LG
868
869codec_err:
f0fba2ad
LG
870 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
871 rtd->dai_link->ops->hw_free(substream);
db2a4165
FM
872
873 mutex_unlock(&pcm_mutex);
874 return ret;
875}
876
877/*
a00f90f9 878 * Frees resources allocated by hw_params, can be called multiple times
db2a4165
FM
879 */
880static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
881{
882 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
883 struct snd_soc_platform *platform = rtd->platform;
884 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
885 struct snd_soc_dai *codec_dai = rtd->codec_dai;
886 struct snd_soc_codec *codec = rtd->codec;
db2a4165
FM
887
888 mutex_lock(&pcm_mutex);
889
890 /* apply codec digital mute */
8c6529db
LG
891 if (!codec->active)
892 snd_soc_dai_digital_mute(codec_dai, 1);
db2a4165
FM
893
894 /* free any machine hw params */
f0fba2ad
LG
895 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
896 rtd->dai_link->ops->hw_free(substream);
db2a4165
FM
897
898 /* free any DMA resources */
f0fba2ad
LG
899 if (platform->driver->ops->hw_free)
900 platform->driver->ops->hw_free(substream);
db2a4165 901
a00f90f9 902 /* now free hw params for the DAIs */
f0fba2ad
LG
903 if (codec_dai->driver->ops->hw_free)
904 codec_dai->driver->ops->hw_free(substream, codec_dai);
db2a4165 905
f0fba2ad
LG
906 if (cpu_dai->driver->ops->hw_free)
907 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
db2a4165
FM
908
909 mutex_unlock(&pcm_mutex);
910 return 0;
911}
912
913static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
914{
915 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
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;
db2a4165
FM
919 int ret;
920
f0fba2ad
LG
921 if (codec_dai->driver->ops->trigger) {
922 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
db2a4165
FM
923 if (ret < 0)
924 return ret;
925 }
926
f0fba2ad
LG
927 if (platform->driver->ops->trigger) {
928 ret = platform->driver->ops->trigger(substream, cmd);
db2a4165
FM
929 if (ret < 0)
930 return ret;
931 }
932
f0fba2ad
LG
933 if (cpu_dai->driver->ops->trigger) {
934 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
db2a4165
FM
935 if (ret < 0)
936 return ret;
937 }
938 return 0;
939}
940
377b6f62
PU
941/*
942 * soc level wrapper for pointer callback
258020d0
PU
943 * If cpu_dai, codec_dai, platform driver has the delay callback, than
944 * the runtime->delay will be updated accordingly.
377b6f62
PU
945 */
946static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
947{
948 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG
949 struct snd_soc_platform *platform = rtd->platform;
950 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
951 struct snd_soc_dai *codec_dai = rtd->codec_dai;
258020d0 952 struct snd_pcm_runtime *runtime = substream->runtime;
377b6f62 953 snd_pcm_uframes_t offset = 0;
258020d0 954 snd_pcm_sframes_t delay = 0;
377b6f62 955
f0fba2ad
LG
956 if (platform->driver->ops->pointer)
957 offset = platform->driver->ops->pointer(substream);
377b6f62 958
f0fba2ad
LG
959 if (cpu_dai->driver->ops->delay)
960 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
258020d0 961
f0fba2ad
LG
962 if (codec_dai->driver->ops->delay)
963 delay += codec_dai->driver->ops->delay(substream, codec_dai);
258020d0 964
f0fba2ad
LG
965 if (platform->driver->delay)
966 delay += platform->driver->delay(substream, codec_dai);
258020d0
PU
967
968 runtime->delay = delay;
969
377b6f62
PU
970 return offset;
971}
972
db2a4165
FM
973/* ASoC PCM operations */
974static struct snd_pcm_ops soc_pcm_ops = {
975 .open = soc_pcm_open,
976 .close = soc_codec_close,
977 .hw_params = soc_pcm_hw_params,
978 .hw_free = soc_pcm_hw_free,
979 .prepare = soc_pcm_prepare,
980 .trigger = soc_pcm_trigger,
377b6f62 981 .pointer = soc_pcm_pointer,
db2a4165
FM
982};
983
984#ifdef CONFIG_PM
985/* powers down audio subsystem for suspend */
416356fc 986static int soc_suspend(struct device *dev)
db2a4165 987{
416356fc 988 struct platform_device *pdev = to_platform_device(dev);
f0fba2ad 989 struct snd_soc_card *card = platform_get_drvdata(pdev);
2eea392d 990 struct snd_soc_codec *codec;
db2a4165
FM
991 int i;
992
e3509ff0
DM
993 /* If the initialization of this soc device failed, there is no codec
994 * associated with it. Just bail out in this case.
995 */
f0fba2ad 996 if (list_empty(&card->codec_dev_list))
e3509ff0
DM
997 return 0;
998
6ed25978
AG
999 /* Due to the resume being scheduled into a workqueue we could
1000 * suspend before that's finished - wait for it to complete.
1001 */
f0fba2ad
LG
1002 snd_power_lock(card->snd_card);
1003 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
1004 snd_power_unlock(card->snd_card);
6ed25978
AG
1005
1006 /* we're going to block userspace touching us until resume completes */
f0fba2ad 1007 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
6ed25978 1008
a00f90f9 1009 /* mute any active DACs */
f0fba2ad
LG
1010 for (i = 0; i < card->num_rtd; i++) {
1011 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1012 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 1013
f0fba2ad 1014 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1015 continue;
1016
f0fba2ad
LG
1017 if (drv->ops->digital_mute && dai->playback_active)
1018 drv->ops->digital_mute(dai, 1);
db2a4165
FM
1019 }
1020
4ccab3e7 1021 /* suspend all pcms */
f0fba2ad
LG
1022 for (i = 0; i < card->num_rtd; i++) {
1023 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1024 continue;
1025
f0fba2ad 1026 snd_pcm_suspend_all(card->rtd[i].pcm);
3efab7dc 1027 }
4ccab3e7 1028
87506549 1029 if (card->suspend_pre)
416356fc 1030 card->suspend_pre(pdev, PMSG_SUSPEND);
db2a4165 1031
f0fba2ad
LG
1032 for (i = 0; i < card->num_rtd; i++) {
1033 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1034 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 1035
f0fba2ad 1036 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1037 continue;
1038
f0fba2ad
LG
1039 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
1040 cpu_dai->driver->suspend(cpu_dai);
1041 if (platform->driver->suspend && !platform->suspended) {
1042 platform->driver->suspend(cpu_dai);
1043 platform->suspended = 1;
1044 }
db2a4165
FM
1045 }
1046
1047 /* close any waiting streams and save state */
f0fba2ad
LG
1048 for (i = 0; i < card->num_rtd; i++) {
1049 run_delayed_work(&card->rtd[i].delayed_work);
ce6120cc 1050 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
f0fba2ad 1051 }
db2a4165 1052
f0fba2ad
LG
1053 for (i = 0; i < card->num_rtd; i++) {
1054 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 1055
f0fba2ad 1056 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1057 continue;
1058
f0fba2ad
LG
1059 if (driver->playback.stream_name != NULL)
1060 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 1061 SND_SOC_DAPM_STREAM_SUSPEND);
f0fba2ad
LG
1062
1063 if (driver->capture.stream_name != NULL)
1064 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM
1065 SND_SOC_DAPM_STREAM_SUSPEND);
1066 }
1067
f0fba2ad 1068 /* suspend all CODECs */
2eea392d 1069 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG
1070 /* If there are paths active then the CODEC will be held with
1071 * bias _ON and should not be suspended. */
1072 if (!codec->suspended && codec->driver->suspend) {
ce6120cc 1073 switch (codec->dapm.bias_level) {
f0fba2ad
LG
1074 case SND_SOC_BIAS_STANDBY:
1075 case SND_SOC_BIAS_OFF:
1076 codec->driver->suspend(codec, PMSG_SUSPEND);
1077 codec->suspended = 1;
1078 break;
1079 default:
1080 dev_dbg(codec->dev, "CODEC is on over suspend\n");
1081 break;
1082 }
1547aba9
MB
1083 }
1084 }
db2a4165 1085
f0fba2ad
LG
1086 for (i = 0; i < card->num_rtd; i++) {
1087 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 1088
f0fba2ad 1089 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1090 continue;
1091
f0fba2ad
LG
1092 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
1093 cpu_dai->driver->suspend(cpu_dai);
db2a4165
FM
1094 }
1095
87506549 1096 if (card->suspend_post)
416356fc 1097 card->suspend_post(pdev, PMSG_SUSPEND);
db2a4165
FM
1098
1099 return 0;
1100}
1101
6ed25978
AG
1102/* deferred resume work, so resume can complete before we finished
1103 * setting our codec back up, which can be very slow on I2C
1104 */
1105static void soc_resume_deferred(struct work_struct *work)
db2a4165 1106{
f0fba2ad
LG
1107 struct snd_soc_card *card =
1108 container_of(work, struct snd_soc_card, deferred_resume_work);
1109 struct platform_device *pdev = to_platform_device(card->dev);
2eea392d 1110 struct snd_soc_codec *codec;
db2a4165
FM
1111 int i;
1112
6ed25978
AG
1113 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1114 * so userspace apps are blocked from touching us
1115 */
1116
f0fba2ad 1117 dev_dbg(card->dev, "starting resume work\n");
6ed25978 1118
9949788b 1119 /* Bring us up into D2 so that DAPM starts enabling things */
f0fba2ad 1120 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
9949788b 1121
87506549
MB
1122 if (card->resume_pre)
1123 card->resume_pre(pdev);
db2a4165 1124
f0fba2ad
LG
1125 /* resume AC97 DAIs */
1126 for (i = 0; i < card->num_rtd; i++) {
1127 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 1128
f0fba2ad 1129 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1130 continue;
1131
f0fba2ad
LG
1132 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
1133 cpu_dai->driver->resume(cpu_dai);
1134 }
1135
2eea392d 1136 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG
1137 /* If the CODEC was idle over suspend then it will have been
1138 * left with bias OFF or STANDBY and suspended so we must now
1139 * resume. Otherwise the suspend was suppressed.
1140 */
1141 if (codec->driver->resume && codec->suspended) {
ce6120cc 1142 switch (codec->dapm.bias_level) {
f0fba2ad
LG
1143 case SND_SOC_BIAS_STANDBY:
1144 case SND_SOC_BIAS_OFF:
1145 codec->driver->resume(codec);
1146 codec->suspended = 0;
1147 break;
1148 default:
1149 dev_dbg(codec->dev, "CODEC was on over suspend\n");
1150 break;
1151 }
1547aba9
MB
1152 }
1153 }
db2a4165 1154
f0fba2ad
LG
1155 for (i = 0; i < card->num_rtd; i++) {
1156 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 1157
f0fba2ad 1158 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1159 continue;
1160
f0fba2ad
LG
1161 if (driver->playback.stream_name != NULL)
1162 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 1163 SND_SOC_DAPM_STREAM_RESUME);
f0fba2ad
LG
1164
1165 if (driver->capture.stream_name != NULL)
1166 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM
1167 SND_SOC_DAPM_STREAM_RESUME);
1168 }
1169
3ff3f64b 1170 /* unmute any active DACs */
f0fba2ad
LG
1171 for (i = 0; i < card->num_rtd; i++) {
1172 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1173 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 1174
f0fba2ad 1175 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1176 continue;
1177
f0fba2ad
LG
1178 if (drv->ops->digital_mute && dai->playback_active)
1179 drv->ops->digital_mute(dai, 0);
db2a4165
FM
1180 }
1181
f0fba2ad
LG
1182 for (i = 0; i < card->num_rtd; i++) {
1183 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1184 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 1185
f0fba2ad 1186 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB
1187 continue;
1188
f0fba2ad
LG
1189 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
1190 cpu_dai->driver->resume(cpu_dai);
1191 if (platform->driver->resume && platform->suspended) {
1192 platform->driver->resume(cpu_dai);
1193 platform->suspended = 0;
1194 }
db2a4165
FM
1195 }
1196
87506549
MB
1197 if (card->resume_post)
1198 card->resume_post(pdev);
db2a4165 1199
f0fba2ad 1200 dev_dbg(card->dev, "resume work completed\n");
6ed25978
AG
1201
1202 /* userspace can access us now we are back as we were before */
f0fba2ad 1203 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
6ed25978
AG
1204}
1205
1206/* powers up audio subsystem after a suspend */
416356fc 1207static int soc_resume(struct device *dev)
6ed25978 1208{
416356fc 1209 struct platform_device *pdev = to_platform_device(dev);
f0fba2ad
LG
1210 struct snd_soc_card *card = platform_get_drvdata(pdev);
1211 int i;
b9dd94a8 1212
64ab9baa
MB
1213 /* AC97 devices might have other drivers hanging off them so
1214 * need to resume immediately. Other drivers don't have that
1215 * problem and may take a substantial amount of time to resume
1216 * due to I/O costs and anti-pop so handle them out of line.
1217 */
f0fba2ad
LG
1218 for (i = 0; i < card->num_rtd; i++) {
1219 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1220 if (cpu_dai->driver->ac97_control) {
1221 dev_dbg(dev, "Resuming AC97 immediately\n");
1222 soc_resume_deferred(&card->deferred_resume_work);
1223 } else {
1224 dev_dbg(dev, "Scheduling resume work\n");
1225 if (!schedule_work(&card->deferred_resume_work))
1226 dev_err(dev, "resume work item may be lost\n");
1227 }
64ab9baa 1228 }
6ed25978 1229
db2a4165
FM
1230 return 0;
1231}
db2a4165
FM
1232#else
1233#define soc_suspend NULL
1234#define soc_resume NULL
1235#endif
1236
02a06d30
BS
1237static struct snd_soc_dai_ops null_dai_ops = {
1238};
1239
f0fba2ad 1240static int soc_bind_dai_link(struct snd_soc_card *card, int num)
db2a4165 1241{
f0fba2ad
LG
1242 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1243 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
fe3e78e0 1244 struct snd_soc_codec *codec;
435c5e25 1245 struct snd_soc_platform *platform;
f0fba2ad 1246 struct snd_soc_dai *codec_dai, *cpu_dai;
435c5e25 1247
f0fba2ad
LG
1248 if (rtd->complete)
1249 return 1;
1250 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
435c5e25 1251
f0fba2ad
LG
1252 /* do we already have the CPU DAI for this link ? */
1253 if (rtd->cpu_dai) {
1254 goto find_codec;
1255 }
1256 /* no, then find CPU DAI from registered DAIs*/
1257 list_for_each_entry(cpu_dai, &dai_list, list) {
1258 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
1259
1260 if (!try_module_get(cpu_dai->dev->driver->owner))
1261 return -ENODEV;
1262
1263 rtd->cpu_dai = cpu_dai;
1264 goto find_codec;
435c5e25 1265 }
435c5e25 1266 }
f0fba2ad
LG
1267 dev_dbg(card->dev, "CPU DAI %s not registered\n",
1268 dai_link->cpu_dai_name);
6308419a 1269
f0fba2ad
LG
1270find_codec:
1271 /* do we already have the CODEC for this link ? */
1272 if (rtd->codec) {
1273 goto find_platform;
1274 }
1275
1276 /* no, then find CODEC from registered CODECs*/
1277 list_for_each_entry(codec, &codec_list, list) {
1278 if (!strcmp(codec->name, dai_link->codec_name)) {
1279 rtd->codec = codec;
1280
1281 if (!try_module_get(codec->dev->driver->owner))
1282 return -ENODEV;
1283
1284 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1285 list_for_each_entry(codec_dai, &dai_list, list) {
1286 if (codec->dev == codec_dai->dev &&
1287 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
1288 rtd->codec_dai = codec_dai;
1289 goto find_platform;
1290 }
435c5e25 1291 }
f0fba2ad
LG
1292 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
1293 dai_link->codec_dai_name);
1294
1295 goto find_platform;
435c5e25 1296 }
f0fba2ad
LG
1297 }
1298 dev_dbg(card->dev, "CODEC %s not registered\n",
1299 dai_link->codec_name);
6b05eda6 1300
f0fba2ad
LG
1301find_platform:
1302 /* do we already have the CODEC DAI for this link ? */
1303 if (rtd->platform) {
1304 goto out;
c5af3a2e 1305 }
f0fba2ad
LG
1306 /* no, then find CPU DAI from registered DAIs*/
1307 list_for_each_entry(platform, &platform_list, list) {
1308 if (!strcmp(platform->name, dai_link->platform_name)) {
c5af3a2e 1309
f0fba2ad
LG
1310 if (!try_module_get(platform->dev->driver->owner))
1311 return -ENODEV;
1312
1313 rtd->platform = platform;
1314 goto out;
1315 }
02a06d30
BS
1316 }
1317
f0fba2ad
LG
1318 dev_dbg(card->dev, "platform %s not registered\n",
1319 dai_link->platform_name);
1320 return 0;
1321
1322out:
1323 /* mark rtd as complete if we found all 4 of our client devices */
1324 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
1325 rtd->complete = 1;
1326 card->num_rtd++;
1327 }
1328 return 1;
1329}
1330
589c3563
JN
1331static void soc_remove_codec(struct snd_soc_codec *codec)
1332{
1333 int err;
1334
1335 if (codec->driver->remove) {
1336 err = codec->driver->remove(codec);
1337 if (err < 0)
1338 dev_err(codec->dev,
1339 "asoc: failed to remove %s: %d\n",
1340 codec->name, err);
1341 }
1342
1343 /* Make sure all DAPM widgets are freed */
1344 snd_soc_dapm_free(&codec->dapm);
1345
1346 soc_cleanup_codec_debugfs(codec);
1347 codec->probed = 0;
1348 list_del(&codec->card_list);
1349 module_put(codec->dev->driver->owner);
1350}
1351
f0fba2ad
LG
1352static void soc_remove_dai_link(struct snd_soc_card *card, int num)
1353{
1354 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1355 struct snd_soc_codec *codec = rtd->codec;
1356 struct snd_soc_platform *platform = rtd->platform;
1357 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1358 int err;
1359
1360 /* unregister the rtd device */
1361 if (rtd->dev_registered) {
1362 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
589c3563 1363 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
f0fba2ad
LG
1364 device_unregister(&rtd->dev);
1365 rtd->dev_registered = 0;
1366 }
1367
1368 /* remove the CODEC DAI */
1369 if (codec_dai && codec_dai->probed) {
1370 if (codec_dai->driver->remove) {
1371 err = codec_dai->driver->remove(codec_dai);
1372 if (err < 0)
1373 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
6b05eda6 1374 }
f0fba2ad
LG
1375 codec_dai->probed = 0;
1376 list_del(&codec_dai->card_list);
1377 }
6b05eda6 1378
f0fba2ad
LG
1379 /* remove the platform */
1380 if (platform && platform->probed) {
1381 if (platform->driver->remove) {
1382 err = platform->driver->remove(platform);
1383 if (err < 0)
1384 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
1385 }
1386 platform->probed = 0;
1387 list_del(&platform->card_list);
1388 module_put(platform->dev->driver->owner);
1389 }
435c5e25 1390
f0fba2ad 1391 /* remove the CODEC */
589c3563
JN
1392 if (codec && codec->probed)
1393 soc_remove_codec(codec);
db2a4165 1394
f0fba2ad
LG
1395 /* remove the cpu_dai */
1396 if (cpu_dai && cpu_dai->probed) {
1397 if (cpu_dai->driver->remove) {
1398 err = cpu_dai->driver->remove(cpu_dai);
1399 if (err < 0)
1400 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
db2a4165 1401 }
f0fba2ad
LG
1402 cpu_dai->probed = 0;
1403 list_del(&cpu_dai->card_list);
1404 module_put(cpu_dai->dev->driver->owner);
db2a4165 1405 }
f0fba2ad 1406}
db2a4165 1407
ead9b919
JN
1408static void soc_set_name_prefix(struct snd_soc_card *card,
1409 struct snd_soc_codec *codec)
1410{
1411 int i;
1412
ff819b83 1413 if (card->codec_conf == NULL)
ead9b919
JN
1414 return;
1415
ff819b83
DP
1416 for (i = 0; i < card->num_configs; i++) {
1417 struct snd_soc_codec_conf *map = &card->codec_conf[i];
ead9b919
JN
1418 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1419 codec->name_prefix = map->name_prefix;
1420 break;
1421 }
1422 }
1423}
1424
589c3563
JN
1425static int soc_probe_codec(struct snd_soc_card *card,
1426 struct snd_soc_codec *codec)
1427{
1428 int ret = 0;
1429
1430 codec->card = card;
1431 codec->dapm.card = card;
1432 soc_set_name_prefix(card, codec);
1433
1434 if (codec->driver->probe) {
1435 ret = codec->driver->probe(codec);
1436 if (ret < 0) {
1437 dev_err(codec->dev,
1438 "asoc: failed to probe CODEC %s: %d\n",
1439 codec->name, ret);
1440 return ret;
1441 }
1442 }
1443
1444 soc_init_codec_debugfs(codec);
1445
1446 /* mark codec as probed and add to card codec list */
1447 codec->probed = 1;
1448 list_add(&codec->card_list, &card->codec_dev_list);
1449
1450 return ret;
1451}
1452
f0fba2ad
LG
1453static void rtd_release(struct device *dev) {}
1454
589c3563
JN
1455static int soc_post_component_init(struct snd_soc_card *card,
1456 struct snd_soc_codec *codec,
1457 int num, int dailess)
1458{
1459 struct snd_soc_dai_link *dai_link = NULL;
1460 struct snd_soc_aux_dev *aux_dev = NULL;
1461 struct snd_soc_pcm_runtime *rtd;
1462 const char *temp, *name;
1463 int ret = 0;
1464
1465 if (!dailess) {
1466 dai_link = &card->dai_link[num];
1467 rtd = &card->rtd[num];
1468 name = dai_link->name;
1469 } else {
1470 aux_dev = &card->aux_dev[num];
1471 rtd = &card->rtd_aux[num];
1472 name = aux_dev->name;
1473 }
1474
1475 /* machine controls, routes and widgets are not prefixed */
1476 temp = codec->name_prefix;
1477 codec->name_prefix = NULL;
1478
1479 /* do machine specific initialization */
1480 if (!dailess && dai_link->init)
1481 ret = dai_link->init(rtd);
1482 else if (dailess && aux_dev->init)
1483 ret = aux_dev->init(&codec->dapm);
1484 if (ret < 0) {
1485 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1486 return ret;
1487 }
1488 codec->name_prefix = temp;
1489
1490 /* Make sure all DAPM widgets are instantiated */
1491 snd_soc_dapm_new_widgets(&codec->dapm);
1492 snd_soc_dapm_sync(&codec->dapm);
1493
1494 /* register the rtd device */
1495 rtd->codec = codec;
1496 rtd->card = card;
1497 rtd->dev.parent = card->dev;
1498 rtd->dev.release = rtd_release;
1499 rtd->dev.init_name = name;
1500 ret = device_register(&rtd->dev);
1501 if (ret < 0) {
1502 dev_err(card->dev,
1503 "asoc: failed to register runtime device: %d\n", ret);
1504 return ret;
1505 }
1506 rtd->dev_registered = 1;
1507
1508 /* add DAPM sysfs entries for this codec */
1509 ret = snd_soc_dapm_sys_add(&rtd->dev);
1510 if (ret < 0)
1511 dev_err(codec->dev,
1512 "asoc: failed to add codec dapm sysfs entries: %d\n",
1513 ret);
1514
1515 /* add codec sysfs entries */
1516 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1517 if (ret < 0)
1518 dev_err(codec->dev,
1519 "asoc: failed to add codec sysfs files: %d\n", ret);
1520
1521 return 0;
1522}
1523
f0fba2ad
LG
1524static int soc_probe_dai_link(struct snd_soc_card *card, int num)
1525{
1526 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1527 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1528 struct snd_soc_codec *codec = rtd->codec;
1529 struct snd_soc_platform *platform = rtd->platform;
1530 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1531 int ret;
1532
1533 dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
1534
1535 /* config components */
1536 codec_dai->codec = codec;
f0fba2ad 1537 cpu_dai->platform = platform;
f0fba2ad
LG
1538 codec_dai->card = card;
1539 cpu_dai->card = card;
1540
1541 /* set default power off timeout */
1542 rtd->pmdown_time = pmdown_time;
1543
1544 /* probe the cpu_dai */
1545 if (!cpu_dai->probed) {
1546 if (cpu_dai->driver->probe) {
1547 ret = cpu_dai->driver->probe(cpu_dai);
1548 if (ret < 0) {
1549 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1550 cpu_dai->name);
1551 return ret;
1552 }
1553 }
1554 cpu_dai->probed = 1;
1555 /* mark cpu_dai as probed and add to card cpu_dai list */
1556 list_add(&cpu_dai->card_list, &card->dai_dev_list);
db2a4165
FM
1557 }
1558
f0fba2ad
LG
1559 /* probe the CODEC */
1560 if (!codec->probed) {
589c3563
JN
1561 ret = soc_probe_codec(card, codec);
1562 if (ret < 0)
1563 return ret;
db2a4165
FM
1564 }
1565
f0fba2ad
LG
1566 /* probe the platform */
1567 if (!platform->probed) {
1568 if (platform->driver->probe) {
1569 ret = platform->driver->probe(platform);
1570 if (ret < 0) {
1571 printk(KERN_ERR "asoc: failed to probe platform %s\n",
1572 platform->name);
1573 return ret;
1574 }
1575 }
1576 /* mark platform as probed and add to card platform list */
1577 platform->probed = 1;
1578 list_add(&platform->card_list, &card->platform_dev_list);
1579 }
6ed25978 1580
f0fba2ad
LG
1581 /* probe the CODEC DAI */
1582 if (!codec_dai->probed) {
1583 if (codec_dai->driver->probe) {
1584 ret = codec_dai->driver->probe(codec_dai);
fe3e78e0 1585 if (ret < 0) {
f0fba2ad
LG
1586 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1587 codec_dai->name);
1588 return ret;
fe3e78e0
MB
1589 }
1590 }
f0fba2ad
LG
1591
1592 /* mark cpu_dai as probed and add to card cpu_dai list */
1593 codec_dai->probed = 1;
1594 list_add(&codec_dai->card_list, &card->dai_dev_list);
fe3e78e0
MB
1595 }
1596
f0fba2ad
LG
1597 /* DAPM dai link stream work */
1598 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
1599
589c3563
JN
1600 ret = soc_post_component_init(card, codec, num, 0);
1601 if (ret)
f0fba2ad 1602 return ret;
fe3e78e0 1603
f0fba2ad
LG
1604 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1605 if (ret < 0)
1606 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1607
f0fba2ad
LG
1608 /* create the pcm */
1609 ret = soc_new_pcm(rtd, num);
1610 if (ret < 0) {
1611 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1612 return ret;
1613 }
1614
1615 /* add platform data for AC97 devices */
1616 if (rtd->codec_dai->driver->ac97_control)
1617 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1618
1619 return 0;
1620}
1621
fe3e78e0 1622#ifdef CONFIG_SND_SOC_AC97_BUS
f0fba2ad
LG
1623static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1624{
1625 int ret;
1626
fe3e78e0
MB
1627 /* Only instantiate AC97 if not already done by the adaptor
1628 * for the generic AC97 subsystem.
1629 */
f0fba2ad 1630 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
0562f788
MW
1631 /*
1632 * It is possible that the AC97 device is already registered to
1633 * the device subsystem. This happens when the device is created
1634 * via snd_ac97_mixer(). Currently only SoC codec that does so
1635 * is the generic AC97 glue but others migh emerge.
1636 *
1637 * In those cases we don't try to register the device again.
1638 */
1639 if (!rtd->codec->ac97_created)
1640 return 0;
f0fba2ad
LG
1641
1642 ret = soc_ac97_dev_register(rtd->codec);
fe3e78e0
MB
1643 if (ret < 0) {
1644 printk(KERN_ERR "asoc: AC97 device register failed\n");
f0fba2ad 1645 return ret;
fe3e78e0 1646 }
f0fba2ad
LG
1647
1648 rtd->codec->ac97_registered = 1;
fe3e78e0 1649 }
f0fba2ad
LG
1650 return 0;
1651}
1652
1653static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1654{
1655 if (codec->ac97_registered) {
1656 soc_ac97_dev_unregister(codec);
1657 codec->ac97_registered = 0;
1658 }
1659}
fe3e78e0
MB
1660#endif
1661
2eea392d
JN
1662static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1663{
1664 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
2eea392d 1665 struct snd_soc_codec *codec;
676ad98a 1666 int ret = -ENODEV;
2eea392d
JN
1667
1668 /* find CODEC from registered CODECs*/
1669 list_for_each_entry(codec, &codec_list, list) {
1670 if (!strcmp(codec->name, aux_dev->codec_name)) {
1671 if (codec->probed) {
1672 dev_err(codec->dev,
1673 "asoc: codec already probed");
1674 ret = -EBUSY;
1675 goto out;
1676 }
676ad98a 1677 goto found;
2eea392d
JN
1678 }
1679 }
676ad98a
JN
1680 /* codec not found */
1681 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1682 goto out;
2eea392d 1683
676ad98a 1684found:
2eea392d
JN
1685 if (!try_module_get(codec->dev->driver->owner))
1686 return -ENODEV;
1687
589c3563 1688 ret = soc_probe_codec(card, codec);
2eea392d 1689 if (ret < 0)
589c3563 1690 return ret;
2eea392d 1691
589c3563 1692 ret = soc_post_component_init(card, codec, num, 1);
2eea392d
JN
1693
1694out:
1695 return ret;
1696}
1697
1698static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1699{
1700 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1701 struct snd_soc_codec *codec = rtd->codec;
2eea392d
JN
1702
1703 /* unregister the rtd device */
1704 if (rtd->dev_registered) {
589c3563 1705 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
2eea392d
JN
1706 device_unregister(&rtd->dev);
1707 rtd->dev_registered = 0;
1708 }
1709
589c3563
JN
1710 if (codec && codec->probed)
1711 soc_remove_codec(codec);
2eea392d
JN
1712}
1713
fdf0f54d
DP
1714static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1715 enum snd_soc_compress_type compress_type)
1716{
1717 int ret;
1718
1719 if (codec->cache_init)
1720 return 0;
1721
1722 /* override the compress_type if necessary */
1723 if (compress_type && codec->compress_type != compress_type)
1724 codec->compress_type = compress_type;
fdf0f54d
DP
1725 ret = snd_soc_cache_init(codec);
1726 if (ret < 0) {
1727 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1728 ret);
1729 return ret;
1730 }
1731 codec->cache_init = 1;
1732 return 0;
1733}
1734
f0fba2ad
LG
1735static void snd_soc_instantiate_card(struct snd_soc_card *card)
1736{
1737 struct platform_device *pdev = to_platform_device(card->dev);
fdf0f54d
DP
1738 struct snd_soc_codec *codec;
1739 struct snd_soc_codec_conf *codec_conf;
1740 enum snd_soc_compress_type compress_type;
f0fba2ad 1741 int ret, i;
fe3e78e0 1742
f0fba2ad 1743 mutex_lock(&card->mutex);
dbe21408 1744
f0fba2ad
LG
1745 if (card->instantiated) {
1746 mutex_unlock(&card->mutex);
1747 return;
1748 }
fe3e78e0 1749
f0fba2ad
LG
1750 /* bind DAIs */
1751 for (i = 0; i < card->num_links; i++)
1752 soc_bind_dai_link(card, i);
fe3e78e0 1753
f0fba2ad
LG
1754 /* bind completed ? */
1755 if (card->num_rtd != card->num_links) {
1756 mutex_unlock(&card->mutex);
1757 return;
1758 }
435c5e25 1759
fdf0f54d
DP
1760 /* initialize the register cache for each available codec */
1761 list_for_each_entry(codec, &codec_list, list) {
1762 if (codec->cache_init)
1763 continue;
1764 /* check to see if we need to override the compress_type */
1765 for (i = 0; i < card->num_configs; ++i) {
1766 codec_conf = &card->codec_conf[i];
1767 if (!strcmp(codec->name, codec_conf->dev_name)) {
1768 compress_type = codec_conf->compress_type;
1769 if (compress_type && compress_type
1770 != codec->compress_type)
1771 break;
1772 }
1773 }
1774 if (i == card->num_configs) {
1775 /* no need to override the compress_type so
1776 * go ahead and do the standard thing */
1777 ret = snd_soc_init_codec_cache(codec, 0);
1778 if (ret < 0) {
1779 mutex_unlock(&card->mutex);
1780 return;
1781 }
1782 continue;
1783 }
1784 /* override the compress_type with the one supplied in
1785 * the machine driver */
1786 ret = snd_soc_init_codec_cache(codec, compress_type);
1787 if (ret < 0) {
1788 mutex_unlock(&card->mutex);
1789 return;
1790 }
1791 }
1792
f0fba2ad
LG
1793 /* card bind complete so register a sound card */
1794 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1795 card->owner, 0, &card->snd_card);
1796 if (ret < 0) {
1797 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1798 card->name);
1799 mutex_unlock(&card->mutex);
1800 return;
1801 }
1802 card->snd_card->dev = card->dev;
1803
1804#ifdef CONFIG_PM
1805 /* deferred resume work */
1806 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1807#endif
db2a4165 1808
f0fba2ad
LG
1809 /* initialise the sound card only once */
1810 if (card->probe) {
1811 ret = card->probe(pdev);
1812 if (ret < 0)
1813 goto card_probe_error;
1814 }
fe3e78e0 1815
f0fba2ad
LG
1816 for (i = 0; i < card->num_links; i++) {
1817 ret = soc_probe_dai_link(card, i);
1818 if (ret < 0) {
321de0d0
MB
1819 pr_err("asoc: failed to instantiate card %s: %d\n",
1820 card->name, ret);
f0fba2ad
LG
1821 goto probe_dai_err;
1822 }
1823 }
db2a4165 1824
2eea392d
JN
1825 for (i = 0; i < card->num_aux_devs; i++) {
1826 ret = soc_probe_aux_dev(card, i);
1827 if (ret < 0) {
1828 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1829 card->name, ret);
1830 goto probe_aux_dev_err;
1831 }
1832 }
1833
f0fba2ad
LG
1834 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1835 "%s", card->name);
1836 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1837 "%s", card->name);
1838
1839 ret = snd_card_register(card->snd_card);
1840 if (ret < 0) {
1841 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
6b3ed785 1842 goto probe_aux_dev_err;
db2a4165
FM
1843 }
1844
f0fba2ad
LG
1845#ifdef CONFIG_SND_SOC_AC97_BUS
1846 /* register any AC97 codecs */
1847 for (i = 0; i < card->num_rtd; i++) {
6b3ed785
AL
1848 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1849 if (ret < 0) {
1850 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1851 while (--i >= 0)
1852 soc_unregister_ac97_dai_link(&card->rtd[i]);
1853 goto probe_aux_dev_err;
f0fba2ad 1854 }
6b3ed785 1855 }
f0fba2ad
LG
1856#endif
1857
1858 card->instantiated = 1;
1859 mutex_unlock(&card->mutex);
1860 return;
1861
2eea392d
JN
1862probe_aux_dev_err:
1863 for (i = 0; i < card->num_aux_devs; i++)
1864 soc_remove_aux_dev(card, i);
1865
f0fba2ad
LG
1866probe_dai_err:
1867 for (i = 0; i < card->num_links; i++)
1868 soc_remove_dai_link(card, i);
1869
1870card_probe_error:
87506549
MB
1871 if (card->remove)
1872 card->remove(pdev);
f0fba2ad
LG
1873
1874 snd_card_free(card->snd_card);
1875
1876 mutex_unlock(&card->mutex);
435c5e25 1877}
db2a4165 1878
435c5e25 1879/*
421f91d2 1880 * Attempt to initialise any uninitialised cards. Must be called with
435c5e25
MB
1881 * client_mutex.
1882 */
1883static void snd_soc_instantiate_cards(void)
1884{
1885 struct snd_soc_card *card;
1886 list_for_each_entry(card, &card_list, list)
1887 snd_soc_instantiate_card(card);
1888}
1889
1890/* probes a new socdev */
1891static int soc_probe(struct platform_device *pdev)
1892{
f0fba2ad 1893 struct snd_soc_card *card = platform_get_drvdata(pdev);
435c5e25 1894 int ret = 0;
435c5e25
MB
1895
1896 /* Bodge while we unpick instantiation */
1897 card->dev = &pdev->dev;
f0fba2ad
LG
1898 INIT_LIST_HEAD(&card->dai_dev_list);
1899 INIT_LIST_HEAD(&card->codec_dev_list);
1900 INIT_LIST_HEAD(&card->platform_dev_list);
1901
a6052154
JN
1902 soc_init_card_debugfs(card);
1903
435c5e25
MB
1904 ret = snd_soc_register_card(card);
1905 if (ret != 0) {
1906 dev_err(&pdev->dev, "Failed to register card\n");
1907 return ret;
1908 }
1909
1910 return 0;
db2a4165
FM
1911}
1912
1913/* removes a socdev */
1914static int soc_remove(struct platform_device *pdev)
1915{
f0fba2ad 1916 struct snd_soc_card *card = platform_get_drvdata(pdev);
db2a4165 1917 int i;
db2a4165 1918
f0fba2ad 1919 if (card->instantiated) {
914dc182 1920
f0fba2ad
LG
1921 /* make sure any delayed work runs */
1922 for (i = 0; i < card->num_rtd; i++) {
1923 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1924 run_delayed_work(&rtd->delayed_work);
b2dfa62c 1925 }
db2a4165 1926
2eea392d
JN
1927 /* remove auxiliary devices */
1928 for (i = 0; i < card->num_aux_devs; i++)
1929 soc_remove_aux_dev(card, i);
1930
f0fba2ad
LG
1931 /* remove and free each DAI */
1932 for (i = 0; i < card->num_rtd; i++)
1933 soc_remove_dai_link(card, i);
1934
a6052154
JN
1935 soc_cleanup_card_debugfs(card);
1936
f0fba2ad 1937 /* remove the card */
b2dfa62c
GL
1938 if (card->remove)
1939 card->remove(pdev);
db2a4165 1940
f0fba2ad
LG
1941 kfree(card->rtd);
1942 snd_card_free(card->snd_card);
1943 }
c5af3a2e 1944 snd_soc_unregister_card(card);
db2a4165
FM
1945 return 0;
1946}
1947
416356fc 1948static int soc_poweroff(struct device *dev)
51737470 1949{
416356fc 1950 struct platform_device *pdev = to_platform_device(dev);
f0fba2ad
LG
1951 struct snd_soc_card *card = platform_get_drvdata(pdev);
1952 int i;
51737470
MB
1953
1954 if (!card->instantiated)
416356fc 1955 return 0;
51737470
MB
1956
1957 /* Flush out pmdown_time work - we actually do want to run it
1958 * now, we're shutting down so no imminent restart. */
f0fba2ad
LG
1959 for (i = 0; i < card->num_rtd; i++) {
1960 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1961 run_delayed_work(&rtd->delayed_work);
1962 }
51737470 1963
f0fba2ad 1964 snd_soc_dapm_shutdown(card);
416356fc
MB
1965
1966 return 0;
51737470
MB
1967}
1968
47145210 1969static const struct dev_pm_ops soc_pm_ops = {
416356fc
MB
1970 .suspend = soc_suspend,
1971 .resume = soc_resume,
1972 .poweroff = soc_poweroff,
1973};
1974
db2a4165
FM
1975/* ASoC platform driver */
1976static struct platform_driver soc_driver = {
1977 .driver = {
1978 .name = "soc-audio",
8b45a209 1979 .owner = THIS_MODULE,
416356fc 1980 .pm = &soc_pm_ops,
db2a4165
FM
1981 },
1982 .probe = soc_probe,
1983 .remove = soc_remove,
db2a4165
FM
1984};
1985
1986/* create a new pcm */
f0fba2ad
LG
1987static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
1988{
1989 struct snd_soc_codec *codec = rtd->codec;
1990 struct snd_soc_platform *platform = rtd->platform;
1991 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1992 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
db2a4165
FM
1993 struct snd_pcm *pcm;
1994 char new_name[64];
1995 int ret = 0, playback = 0, capture = 0;
1996
db2a4165 1997 /* check client and interface hw capabilities */
40ca1142 1998 snprintf(new_name, sizeof(new_name), "%s %s-%d",
f0fba2ad 1999 rtd->dai_link->stream_name, codec_dai->name, num);
db2a4165 2000
f0fba2ad 2001 if (codec_dai->driver->playback.channels_min)
db2a4165 2002 playback = 1;
f0fba2ad 2003 if (codec_dai->driver->capture.channels_min)
db2a4165
FM
2004 capture = 1;
2005
f0fba2ad
LG
2006 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
2007 ret = snd_pcm_new(rtd->card->snd_card, new_name,
2008 num, playback, capture, &pcm);
db2a4165 2009 if (ret < 0) {
f0fba2ad 2010 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
db2a4165
FM
2011 return ret;
2012 }
2013
f0fba2ad 2014 rtd->pcm = pcm;
db2a4165 2015 pcm->private_data = rtd;
f0fba2ad
LG
2016 soc_pcm_ops.mmap = platform->driver->ops->mmap;
2017 soc_pcm_ops.pointer = platform->driver->ops->pointer;
2018 soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
2019 soc_pcm_ops.copy = platform->driver->ops->copy;
2020 soc_pcm_ops.silence = platform->driver->ops->silence;
2021 soc_pcm_ops.ack = platform->driver->ops->ack;
2022 soc_pcm_ops.page = platform->driver->ops->page;
db2a4165
FM
2023
2024 if (playback)
2025 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
2026
2027 if (capture)
2028 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
2029
f0fba2ad 2030 ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
db2a4165
FM
2031 if (ret < 0) {
2032 printk(KERN_ERR "asoc: platform pcm constructor failed\n");
db2a4165
FM
2033 return ret;
2034 }
2035
f0fba2ad 2036 pcm->private_free = platform->driver->pcm_free;
db2a4165
FM
2037 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
2038 cpu_dai->name);
2039 return ret;
2040}
2041
096e49d5
MB
2042/**
2043 * snd_soc_codec_volatile_register: Report if a register is volatile.
2044 *
2045 * @codec: CODEC to query.
2046 * @reg: Register to query.
2047 *
2048 * Boolean function indiciating if a CODEC register is volatile.
2049 */
2050int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
2051{
f0fba2ad
LG
2052 if (codec->driver->volatile_register)
2053 return codec->driver->volatile_register(reg);
096e49d5
MB
2054 else
2055 return 0;
2056}
2057EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2058
db2a4165
FM
2059/**
2060 * snd_soc_new_ac97_codec - initailise AC97 device
2061 * @codec: audio codec
2062 * @ops: AC97 bus operations
2063 * @num: AC97 codec number
2064 *
2065 * Initialises AC97 codec resources for use by ad-hoc devices only.
2066 */
2067int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2068 struct snd_ac97_bus_ops *ops, int num)
2069{
2070 mutex_lock(&codec->mutex);
2071
2072 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2073 if (codec->ac97 == NULL) {
2074 mutex_unlock(&codec->mutex);
2075 return -ENOMEM;
2076 }
2077
2078 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2079 if (codec->ac97->bus == NULL) {
2080 kfree(codec->ac97);
2081 codec->ac97 = NULL;
2082 mutex_unlock(&codec->mutex);
2083 return -ENOMEM;
2084 }
2085
2086 codec->ac97->bus->ops = ops;
2087 codec->ac97->num = num;
0562f788
MW
2088
2089 /*
2090 * Mark the AC97 device to be created by us. This way we ensure that the
2091 * device will be registered with the device subsystem later on.
2092 */
2093 codec->ac97_created = 1;
2094
db2a4165
FM
2095 mutex_unlock(&codec->mutex);
2096 return 0;
2097}
2098EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2099
2100/**
2101 * snd_soc_free_ac97_codec - free AC97 codec device
2102 * @codec: audio codec
2103 *
2104 * Frees AC97 codec device resources.
2105 */
2106void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2107{
2108 mutex_lock(&codec->mutex);
f0fba2ad
LG
2109#ifdef CONFIG_SND_SOC_AC97_BUS
2110 soc_unregister_ac97_dai_link(codec);
2111#endif
db2a4165
FM
2112 kfree(codec->ac97->bus);
2113 kfree(codec->ac97);
2114 codec->ac97 = NULL;
0562f788 2115 codec->ac97_created = 0;
db2a4165
FM
2116 mutex_unlock(&codec->mutex);
2117}
2118EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2119
c3753707
MB
2120unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2121{
2122 unsigned int ret;
2123
c3acec26 2124 ret = codec->read(codec, reg);
c3753707 2125 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
a8b1d34f 2126 trace_snd_soc_reg_read(codec, reg, ret);
c3753707
MB
2127
2128 return ret;
2129}
2130EXPORT_SYMBOL_GPL(snd_soc_read);
2131
2132unsigned int snd_soc_write(struct snd_soc_codec *codec,
2133 unsigned int reg, unsigned int val)
2134{
2135 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
a8b1d34f 2136 trace_snd_soc_reg_write(codec, reg, val);
c3acec26 2137 return codec->write(codec, reg, val);
c3753707
MB
2138}
2139EXPORT_SYMBOL_GPL(snd_soc_write);
2140
db2a4165
FM
2141/**
2142 * snd_soc_update_bits - update codec register bits
2143 * @codec: audio codec
2144 * @reg: codec register
2145 * @mask: register mask
2146 * @value: new value
2147 *
2148 * Writes new register value.
2149 *
2150 * Returns 1 for change else 0.
2151 */
2152int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 2153 unsigned int mask, unsigned int value)
db2a4165
FM
2154{
2155 int change;
46f5822f 2156 unsigned int old, new;
db2a4165 2157
db2a4165
FM
2158 old = snd_soc_read(codec, reg);
2159 new = (old & ~mask) | value;
2160 change = old != new;
2161 if (change)
2162 snd_soc_write(codec, reg, new);
2163
db2a4165
FM
2164 return change;
2165}
2166EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2167
6c508c62
EN
2168/**
2169 * snd_soc_update_bits_locked - update codec register bits
2170 * @codec: audio codec
2171 * @reg: codec register
2172 * @mask: register mask
2173 * @value: new value
2174 *
2175 * Writes new register value, and takes the codec mutex.
2176 *
2177 * Returns 1 for change else 0.
2178 */
dd1b3d53
MB
2179int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2180 unsigned short reg, unsigned int mask,
2181 unsigned int value)
6c508c62
EN
2182{
2183 int change;
2184
2185 mutex_lock(&codec->mutex);
2186 change = snd_soc_update_bits(codec, reg, mask, value);
2187 mutex_unlock(&codec->mutex);
2188
2189 return change;
2190}
dd1b3d53 2191EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
6c508c62 2192
db2a4165
FM
2193/**
2194 * snd_soc_test_bits - test register for change
2195 * @codec: audio codec
2196 * @reg: codec register
2197 * @mask: register mask
2198 * @value: new value
2199 *
2200 * Tests a register with a new value and checks if the new value is
2201 * different from the old value.
2202 *
2203 * Returns 1 for change else 0.
2204 */
2205int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 2206 unsigned int mask, unsigned int value)
db2a4165
FM
2207{
2208 int change;
46f5822f 2209 unsigned int old, new;
db2a4165 2210
db2a4165
FM
2211 old = snd_soc_read(codec, reg);
2212 new = (old & ~mask) | value;
2213 change = old != new;
db2a4165
FM
2214
2215 return change;
2216}
2217EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2218
db2a4165
FM
2219/**
2220 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2221 * @substream: the pcm substream
2222 * @hw: the hardware parameters
2223 *
2224 * Sets the substream runtime hardware parameters.
2225 */
2226int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2227 const struct snd_pcm_hardware *hw)
2228{
2229 struct snd_pcm_runtime *runtime = substream->runtime;
2230 runtime->hw.info = hw->info;
2231 runtime->hw.formats = hw->formats;
2232 runtime->hw.period_bytes_min = hw->period_bytes_min;
2233 runtime->hw.period_bytes_max = hw->period_bytes_max;
2234 runtime->hw.periods_min = hw->periods_min;
2235 runtime->hw.periods_max = hw->periods_max;
2236 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2237 runtime->hw.fifo_size = hw->fifo_size;
2238 return 0;
2239}
2240EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2241
2242/**
2243 * snd_soc_cnew - create new control
2244 * @_template: control template
2245 * @data: control private data
ac11a2b3 2246 * @long_name: control long name
db2a4165
FM
2247 *
2248 * Create a new mixer control from a template control.
2249 *
2250 * Returns 0 for success, else error.
2251 */
2252struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2253 void *data, char *long_name)
2254{
2255 struct snd_kcontrol_new template;
2256
2257 memcpy(&template, _template, sizeof(template));
2258 if (long_name)
2259 template.name = long_name;
db2a4165
FM
2260 template.index = 0;
2261
2262 return snd_ctl_new1(&template, data);
2263}
2264EXPORT_SYMBOL_GPL(snd_soc_cnew);
2265
3e8e1952
IM
2266/**
2267 * snd_soc_add_controls - add an array of controls to a codec.
2268 * Convienience function to add a list of controls. Many codecs were
2269 * duplicating this code.
2270 *
2271 * @codec: codec to add controls to
2272 * @controls: array of controls to add
2273 * @num_controls: number of elements in the array
2274 *
2275 * Return 0 for success, else error.
2276 */
2277int snd_soc_add_controls(struct snd_soc_codec *codec,
2278 const struct snd_kcontrol_new *controls, int num_controls)
2279{
f0fba2ad 2280 struct snd_card *card = codec->card->snd_card;
ead9b919 2281 char prefixed_name[44], *name;
3e8e1952
IM
2282 int err, i;
2283
2284 for (i = 0; i < num_controls; i++) {
2285 const struct snd_kcontrol_new *control = &controls[i];
ead9b919
JN
2286 if (codec->name_prefix) {
2287 snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
2288 codec->name_prefix, control->name);
2289 name = prefixed_name;
2290 } else {
2291 name = control->name;
2292 }
2293 err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
3e8e1952 2294 if (err < 0) {
082100dc 2295 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
ead9b919 2296 codec->name, name, err);
3e8e1952
IM
2297 return err;
2298 }
2299 }
2300
2301 return 0;
2302}
2303EXPORT_SYMBOL_GPL(snd_soc_add_controls);
2304
db2a4165
FM
2305/**
2306 * snd_soc_info_enum_double - enumerated double mixer info callback
2307 * @kcontrol: mixer control
2308 * @uinfo: control element information
2309 *
2310 * Callback to provide information about a double enumerated
2311 * mixer control.
2312 *
2313 * Returns 0 for success.
2314 */
2315int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2316 struct snd_ctl_elem_info *uinfo)
2317{
2318 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2319
2320 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2321 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
f8ba0b7b 2322 uinfo->value.enumerated.items = e->max;
db2a4165 2323
f8ba0b7b
JS
2324 if (uinfo->value.enumerated.item > e->max - 1)
2325 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM
2326 strcpy(uinfo->value.enumerated.name,
2327 e->texts[uinfo->value.enumerated.item]);
2328 return 0;
2329}
2330EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2331
2332/**
2333 * snd_soc_get_enum_double - enumerated double mixer get callback
2334 * @kcontrol: mixer control
ac11a2b3 2335 * @ucontrol: control element information
db2a4165
FM
2336 *
2337 * Callback to get the value of a double enumerated mixer.
2338 *
2339 * Returns 0 for success.
2340 */
2341int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2342 struct snd_ctl_elem_value *ucontrol)
2343{
2344 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2345 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2346 unsigned int val, bitmask;
db2a4165 2347
f8ba0b7b 2348 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165
FM
2349 ;
2350 val = snd_soc_read(codec, e->reg);
3ff3f64b
MB
2351 ucontrol->value.enumerated.item[0]
2352 = (val >> e->shift_l) & (bitmask - 1);
db2a4165
FM
2353 if (e->shift_l != e->shift_r)
2354 ucontrol->value.enumerated.item[1] =
2355 (val >> e->shift_r) & (bitmask - 1);
2356
2357 return 0;
2358}
2359EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2360
2361/**
2362 * snd_soc_put_enum_double - enumerated double mixer put callback
2363 * @kcontrol: mixer control
ac11a2b3 2364 * @ucontrol: control element information
db2a4165
FM
2365 *
2366 * Callback to set the value of a double enumerated mixer.
2367 *
2368 * Returns 0 for success.
2369 */
2370int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2371 struct snd_ctl_elem_value *ucontrol)
2372{
2373 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2374 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR
2375 unsigned int val;
2376 unsigned int mask, bitmask;
db2a4165 2377
f8ba0b7b 2378 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165 2379 ;
f8ba0b7b 2380 if (ucontrol->value.enumerated.item[0] > e->max - 1)
db2a4165
FM
2381 return -EINVAL;
2382 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2383 mask = (bitmask - 1) << e->shift_l;
2384 if (e->shift_l != e->shift_r) {
f8ba0b7b 2385 if (ucontrol->value.enumerated.item[1] > e->max - 1)
db2a4165
FM
2386 return -EINVAL;
2387 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2388 mask |= (bitmask - 1) << e->shift_r;
2389 }
2390
6c508c62 2391 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
db2a4165
FM
2392}
2393EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2394
2e72f8e3
PU
2395/**
2396 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2397 * @kcontrol: mixer control
2398 * @ucontrol: control element information
2399 *
2400 * Callback to get the value of a double semi enumerated mixer.
2401 *
2402 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2403 * used for handling bitfield coded enumeration for example.
2404 *
2405 * Returns 0 for success.
2406 */
2407int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2408 struct snd_ctl_elem_value *ucontrol)
2409{
2410 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2411 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2412 unsigned int reg_val, val, mux;
2e72f8e3
PU
2413
2414 reg_val = snd_soc_read(codec, e->reg);
2415 val = (reg_val >> e->shift_l) & e->mask;
2416 for (mux = 0; mux < e->max; mux++) {
2417 if (val == e->values[mux])
2418 break;
2419 }
2420 ucontrol->value.enumerated.item[0] = mux;
2421 if (e->shift_l != e->shift_r) {
2422 val = (reg_val >> e->shift_r) & e->mask;
2423 for (mux = 0; mux < e->max; mux++) {
2424 if (val == e->values[mux])
2425 break;
2426 }
2427 ucontrol->value.enumerated.item[1] = mux;
2428 }
2429
2430 return 0;
2431}
2432EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2433
2434/**
2435 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2436 * @kcontrol: mixer control
2437 * @ucontrol: control element information
2438 *
2439 * Callback to set the value of a double semi enumerated mixer.
2440 *
2441 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2442 * used for handling bitfield coded enumeration for example.
2443 *
2444 * Returns 0 for success.
2445 */
2446int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2447 struct snd_ctl_elem_value *ucontrol)
2448{
2449 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2450 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR
2451 unsigned int val;
2452 unsigned int mask;
2e72f8e3
PU
2453
2454 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2455 return -EINVAL;
2456 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2457 mask = e->mask << e->shift_l;
2458 if (e->shift_l != e->shift_r) {
2459 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2460 return -EINVAL;
2461 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2462 mask |= e->mask << e->shift_r;
2463 }
2464
6c508c62 2465 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2e72f8e3
PU
2466}
2467EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2468
db2a4165
FM
2469/**
2470 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2471 * @kcontrol: mixer control
2472 * @uinfo: control element information
2473 *
2474 * Callback to provide information about an external enumerated
2475 * single mixer.
2476 *
2477 * Returns 0 for success.
2478 */
2479int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2480 struct snd_ctl_elem_info *uinfo)
2481{
2482 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2483
2484 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2485 uinfo->count = 1;
f8ba0b7b 2486 uinfo->value.enumerated.items = e->max;
db2a4165 2487
f8ba0b7b
JS
2488 if (uinfo->value.enumerated.item > e->max - 1)
2489 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM
2490 strcpy(uinfo->value.enumerated.name,
2491 e->texts[uinfo->value.enumerated.item]);
2492 return 0;
2493}
2494EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2495
2496/**
2497 * snd_soc_info_volsw_ext - external single mixer info callback
2498 * @kcontrol: mixer control
2499 * @uinfo: control element information
2500 *
2501 * Callback to provide information about a single external mixer control.
2502 *
2503 * Returns 0 for success.
2504 */
2505int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2506 struct snd_ctl_elem_info *uinfo)
2507{
a7a4ac86
PZ
2508 int max = kcontrol->private_value;
2509
fd5dfad9 2510 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ
2511 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2512 else
2513 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2514
db2a4165
FM
2515 uinfo->count = 1;
2516 uinfo->value.integer.min = 0;
a7a4ac86 2517 uinfo->value.integer.max = max;
db2a4165
FM
2518 return 0;
2519}
2520EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2521
db2a4165
FM
2522/**
2523 * snd_soc_info_volsw - single mixer info callback
2524 * @kcontrol: mixer control
2525 * @uinfo: control element information
2526 *
2527 * Callback to provide information about a single mixer control.
2528 *
2529 * Returns 0 for success.
2530 */
2531int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2532 struct snd_ctl_elem_info *uinfo)
2533{
4eaa9819
JS
2534 struct soc_mixer_control *mc =
2535 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2536 int platform_max;
762b8df7 2537 unsigned int shift = mc->shift;
815ecf8d 2538 unsigned int rshift = mc->rshift;
db2a4165 2539
d11bb4a9
PU
2540 if (!mc->platform_max)
2541 mc->platform_max = mc->max;
2542 platform_max = mc->platform_max;
2543
2544 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ
2545 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2546 else
2547 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2548
db2a4165
FM
2549 uinfo->count = shift == rshift ? 1 : 2;
2550 uinfo->value.integer.min = 0;
d11bb4a9 2551 uinfo->value.integer.max = platform_max;
db2a4165
FM
2552 return 0;
2553}
2554EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2555
2556/**
2557 * snd_soc_get_volsw - single mixer get callback
2558 * @kcontrol: mixer control
ac11a2b3 2559 * @ucontrol: control element information
db2a4165
FM
2560 *
2561 * Callback to get the value of a single mixer control.
2562 *
2563 * Returns 0 for success.
2564 */
2565int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2566 struct snd_ctl_elem_value *ucontrol)
2567{
4eaa9819
JS
2568 struct soc_mixer_control *mc =
2569 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2570 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS
2571 unsigned int reg = mc->reg;
2572 unsigned int shift = mc->shift;
2573 unsigned int rshift = mc->rshift;
4eaa9819 2574 int max = mc->max;
815ecf8d
JS
2575 unsigned int mask = (1 << fls(max)) - 1;
2576 unsigned int invert = mc->invert;
db2a4165
FM
2577
2578 ucontrol->value.integer.value[0] =
2579 (snd_soc_read(codec, reg) >> shift) & mask;
2580 if (shift != rshift)
2581 ucontrol->value.integer.value[1] =
2582 (snd_soc_read(codec, reg) >> rshift) & mask;
2583 if (invert) {
2584 ucontrol->value.integer.value[0] =
a7a4ac86 2585 max - ucontrol->value.integer.value[0];
db2a4165
FM
2586 if (shift != rshift)
2587 ucontrol->value.integer.value[1] =
a7a4ac86 2588 max - ucontrol->value.integer.value[1];
db2a4165
FM
2589 }
2590
2591 return 0;
2592}
2593EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2594
2595/**
2596 * snd_soc_put_volsw - single mixer put callback
2597 * @kcontrol: mixer control
ac11a2b3 2598 * @ucontrol: control element information
db2a4165
FM
2599 *
2600 * Callback to set the value of a single mixer control.
2601 *
2602 * Returns 0 for success.
2603 */
2604int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2605 struct snd_ctl_elem_value *ucontrol)
2606{
4eaa9819
JS
2607 struct soc_mixer_control *mc =
2608 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2609 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS
2610 unsigned int reg = mc->reg;
2611 unsigned int shift = mc->shift;
2612 unsigned int rshift = mc->rshift;
4eaa9819 2613 int max = mc->max;
815ecf8d
JS
2614 unsigned int mask = (1 << fls(max)) - 1;
2615 unsigned int invert = mc->invert;
46f5822f 2616 unsigned int val, val2, val_mask;
db2a4165
FM
2617
2618 val = (ucontrol->value.integer.value[0] & mask);
2619 if (invert)
a7a4ac86 2620 val = max - val;
db2a4165
FM
2621 val_mask = mask << shift;
2622 val = val << shift;
2623 if (shift != rshift) {
2624 val2 = (ucontrol->value.integer.value[1] & mask);
2625 if (invert)
a7a4ac86 2626 val2 = max - val2;
db2a4165
FM
2627 val_mask |= mask << rshift;
2628 val |= val2 << rshift;
2629 }
6c508c62 2630 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
db2a4165
FM
2631}
2632EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2633
2634/**
2635 * snd_soc_info_volsw_2r - double mixer info callback
2636 * @kcontrol: mixer control
2637 * @uinfo: control element information
2638 *
2639 * Callback to provide information about a double mixer control that
2640 * spans 2 codec registers.
2641 *
2642 * Returns 0 for success.
2643 */
2644int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2645 struct snd_ctl_elem_info *uinfo)
2646{
4eaa9819
JS
2647 struct soc_mixer_control *mc =
2648 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2649 int platform_max;
a7a4ac86 2650
d11bb4a9
PU
2651 if (!mc->platform_max)
2652 mc->platform_max = mc->max;
2653 platform_max = mc->platform_max;
2654
2655 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ
2656 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2657 else
2658 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2659
db2a4165
FM
2660 uinfo->count = 2;
2661 uinfo->value.integer.min = 0;
d11bb4a9 2662 uinfo->value.integer.max = platform_max;
db2a4165
FM
2663 return 0;
2664}
2665EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2666
2667/**
2668 * snd_soc_get_volsw_2r - double mixer get callback
2669 * @kcontrol: mixer control
ac11a2b3 2670 * @ucontrol: control element information
db2a4165
FM
2671 *
2672 * Callback to get the value of a double mixer control that spans 2 registers.
2673 *
2674 * Returns 0 for success.
2675 */
2676int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2677 struct snd_ctl_elem_value *ucontrol)
2678{
4eaa9819
JS
2679 struct soc_mixer_control *mc =
2680 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2681 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS
2682 unsigned int reg = mc->reg;
2683 unsigned int reg2 = mc->rreg;
2684 unsigned int shift = mc->shift;
4eaa9819 2685 int max = mc->max;
46f5822f 2686 unsigned int mask = (1 << fls(max)) - 1;
815ecf8d 2687 unsigned int invert = mc->invert;
db2a4165
FM
2688
2689 ucontrol->value.integer.value[0] =
2690 (snd_soc_read(codec, reg) >> shift) & mask;
2691 ucontrol->value.integer.value[1] =
2692 (snd_soc_read(codec, reg2) >> shift) & mask;
2693 if (invert) {
2694 ucontrol->value.integer.value[0] =
a7a4ac86 2695 max - ucontrol->value.integer.value[0];
db2a4165 2696 ucontrol->value.integer.value[1] =
a7a4ac86 2697 max - ucontrol->value.integer.value[1];
db2a4165
FM
2698 }
2699
2700 return 0;
2701}
2702EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2703
2704/**
2705 * snd_soc_put_volsw_2r - double mixer set callback
2706 * @kcontrol: mixer control
ac11a2b3 2707 * @ucontrol: control element information
db2a4165
FM
2708 *
2709 * Callback to set the value of a double mixer control that spans 2 registers.
2710 *
2711 * Returns 0 for success.
2712 */
2713int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2714 struct snd_ctl_elem_value *ucontrol)
2715{
4eaa9819
JS
2716 struct soc_mixer_control *mc =
2717 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2718 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS
2719 unsigned int reg = mc->reg;
2720 unsigned int reg2 = mc->rreg;
2721 unsigned int shift = mc->shift;
4eaa9819 2722 int max = mc->max;
815ecf8d
JS
2723 unsigned int mask = (1 << fls(max)) - 1;
2724 unsigned int invert = mc->invert;
db2a4165 2725 int err;
46f5822f 2726 unsigned int val, val2, val_mask;
db2a4165
FM
2727
2728 val_mask = mask << shift;
2729 val = (ucontrol->value.integer.value[0] & mask);
2730 val2 = (ucontrol->value.integer.value[1] & mask);
2731
2732 if (invert) {
a7a4ac86
PZ
2733 val = max - val;
2734 val2 = max - val2;
db2a4165
FM
2735 }
2736
2737 val = val << shift;
2738 val2 = val2 << shift;
2739
6c508c62 2740 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3ff3f64b 2741 if (err < 0)
db2a4165
FM
2742 return err;
2743
6c508c62 2744 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
db2a4165
FM
2745 return err;
2746}
2747EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2748
e13ac2e9
MB
2749/**
2750 * snd_soc_info_volsw_s8 - signed mixer info callback
2751 * @kcontrol: mixer control
2752 * @uinfo: control element information
2753 *
2754 * Callback to provide information about a signed mixer control.
2755 *
2756 * Returns 0 for success.
2757 */
2758int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2759 struct snd_ctl_elem_info *uinfo)
2760{
4eaa9819
JS
2761 struct soc_mixer_control *mc =
2762 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2763 int platform_max;
4eaa9819 2764 int min = mc->min;
e13ac2e9 2765
d11bb4a9
PU
2766 if (!mc->platform_max)
2767 mc->platform_max = mc->max;
2768 platform_max = mc->platform_max;
2769
e13ac2e9
MB
2770 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2771 uinfo->count = 2;
2772 uinfo->value.integer.min = 0;
d11bb4a9 2773 uinfo->value.integer.max = platform_max - min;
e13ac2e9
MB
2774 return 0;
2775}
2776EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2777
2778/**
2779 * snd_soc_get_volsw_s8 - signed mixer get callback
2780 * @kcontrol: mixer control
ac11a2b3 2781 * @ucontrol: control element information
e13ac2e9
MB
2782 *
2783 * Callback to get the value of a signed mixer control.
2784 *
2785 * Returns 0 for success.
2786 */
2787int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2788 struct snd_ctl_elem_value *ucontrol)
2789{
4eaa9819
JS
2790 struct soc_mixer_control *mc =
2791 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2792 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2793 unsigned int reg = mc->reg;
4eaa9819 2794 int min = mc->min;
e13ac2e9
MB
2795 int val = snd_soc_read(codec, reg);
2796
2797 ucontrol->value.integer.value[0] =
2798 ((signed char)(val & 0xff))-min;
2799 ucontrol->value.integer.value[1] =
2800 ((signed char)((val >> 8) & 0xff))-min;
2801 return 0;
2802}
2803EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2804
2805/**
2806 * snd_soc_put_volsw_sgn - signed mixer put callback
2807 * @kcontrol: mixer control
ac11a2b3 2808 * @ucontrol: control element information
e13ac2e9
MB
2809 *
2810 * Callback to set the value of a signed mixer control.
2811 *
2812 * Returns 0 for success.
2813 */
2814int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2815 struct snd_ctl_elem_value *ucontrol)
2816{
4eaa9819
JS
2817 struct soc_mixer_control *mc =
2818 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2819 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2820 unsigned int reg = mc->reg;
4eaa9819 2821 int min = mc->min;
46f5822f 2822 unsigned int val;
e13ac2e9
MB
2823
2824 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2825 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2826
6c508c62 2827 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
e13ac2e9
MB
2828}
2829EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2830
637d3847
PU
2831/**
2832 * snd_soc_limit_volume - Set new limit to an existing volume control.
2833 *
2834 * @codec: where to look for the control
2835 * @name: Name of the control
2836 * @max: new maximum limit
2837 *
2838 * Return 0 for success, else error.
2839 */
2840int snd_soc_limit_volume(struct snd_soc_codec *codec,
2841 const char *name, int max)
2842{
f0fba2ad 2843 struct snd_card *card = codec->card->snd_card;
637d3847
PU
2844 struct snd_kcontrol *kctl;
2845 struct soc_mixer_control *mc;
2846 int found = 0;
2847 int ret = -EINVAL;
2848
2849 /* Sanity check for name and max */
2850 if (unlikely(!name || max <= 0))
2851 return -EINVAL;
2852
2853 list_for_each_entry(kctl, &card->controls, list) {
2854 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2855 found = 1;
2856 break;
2857 }
2858 }
2859 if (found) {
2860 mc = (struct soc_mixer_control *)kctl->private_value;
2861 if (max <= mc->max) {
d11bb4a9 2862 mc->platform_max = max;
637d3847
PU
2863 ret = 0;
2864 }
2865 }
2866 return ret;
2867}
2868EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2869
b6f4bb38 2870/**
2871 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2872 * mixer info callback
2873 * @kcontrol: mixer control
2874 * @uinfo: control element information
2875 *
2876 * Returns 0 for success.
2877 */
2878int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2879 struct snd_ctl_elem_info *uinfo)
2880{
2881 struct soc_mixer_control *mc =
2882 (struct soc_mixer_control *)kcontrol->private_value;
2883 int max = mc->max;
2884 int min = mc->min;
2885
2886 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2887 uinfo->count = 2;
2888 uinfo->value.integer.min = 0;
2889 uinfo->value.integer.max = max-min;
2890
2891 return 0;
2892}
2893EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2894
2895/**
2896 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2897 * mixer get callback
2898 * @kcontrol: mixer control
2899 * @uinfo: control element information
2900 *
2901 * Returns 0 for success.
2902 */
2903int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2904 struct snd_ctl_elem_value *ucontrol)
2905{
2906 struct soc_mixer_control *mc =
2907 (struct soc_mixer_control *)kcontrol->private_value;
2908 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2909 unsigned int mask = (1<<mc->shift)-1;
2910 int min = mc->min;
2911 int val = snd_soc_read(codec, mc->reg) & mask;
2912 int valr = snd_soc_read(codec, mc->rreg) & mask;
2913
20630c7f
SL
2914 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2915 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
b6f4bb38 2916 return 0;
2917}
2918EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2919
2920/**
2921 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2922 * mixer put callback
2923 * @kcontrol: mixer control
2924 * @uinfo: control element information
2925 *
2926 * Returns 0 for success.
2927 */
2928int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2929 struct snd_ctl_elem_value *ucontrol)
2930{
2931 struct soc_mixer_control *mc =
2932 (struct soc_mixer_control *)kcontrol->private_value;
2933 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2934 unsigned int mask = (1<<mc->shift)-1;
2935 int min = mc->min;
2936 int ret;
2937 unsigned int val, valr, oval, ovalr;
2938
2939 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2940 val &= mask;
2941 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2942 valr &= mask;
2943
2944 oval = snd_soc_read(codec, mc->reg) & mask;
2945 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2946
2947 ret = 0;
2948 if (oval != val) {
2949 ret = snd_soc_write(codec, mc->reg, val);
2950 if (ret < 0)
f1df5aec 2951 return ret;
b6f4bb38 2952 }
2953 if (ovalr != valr) {
2954 ret = snd_soc_write(codec, mc->rreg, valr);
2955 if (ret < 0)
f1df5aec 2956 return ret;
b6f4bb38 2957 }
2958
2959 return 0;
2960}
2961EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2962
8c6529db
LG
2963/**
2964 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2965 * @dai: DAI
2966 * @clk_id: DAI specific clock ID
2967 * @freq: new clock frequency in Hz
2968 * @dir: new clock direction - input/output.
2969 *
2970 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2971 */
2972int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2973 unsigned int freq, int dir)
2974{
f0fba2ad
LG
2975 if (dai->driver && dai->driver->ops->set_sysclk)
2976 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
8c6529db
LG
2977 else
2978 return -EINVAL;
2979}
2980EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2981
2982/**
2983 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2984 * @dai: DAI
ac11a2b3 2985 * @div_id: DAI specific clock divider ID
8c6529db
LG
2986 * @div: new clock divisor.
2987 *
2988 * Configures the clock dividers. This is used to derive the best DAI bit and
2989 * frame clocks from the system or master clock. It's best to set the DAI bit
2990 * and frame clocks as low as possible to save system power.
2991 */
2992int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2993 int div_id, int div)
2994{
f0fba2ad
LG
2995 if (dai->driver && dai->driver->ops->set_clkdiv)
2996 return dai->driver->ops->set_clkdiv(dai, div_id, div);
8c6529db
LG
2997 else
2998 return -EINVAL;
2999}
3000EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3001
3002/**
3003 * snd_soc_dai_set_pll - configure DAI PLL.
3004 * @dai: DAI
3005 * @pll_id: DAI specific PLL ID
85488037 3006 * @source: DAI specific source for the PLL
8c6529db
LG
3007 * @freq_in: PLL input clock frequency in Hz
3008 * @freq_out: requested PLL output clock frequency in Hz
3009 *
3010 * Configures and enables PLL to generate output clock based on input clock.
3011 */
85488037
MB
3012int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3013 unsigned int freq_in, unsigned int freq_out)
8c6529db 3014{
f0fba2ad
LG
3015 if (dai->driver && dai->driver->ops->set_pll)
3016 return dai->driver->ops->set_pll(dai, pll_id, source,
85488037 3017 freq_in, freq_out);
8c6529db
LG
3018 else
3019 return -EINVAL;
3020}
3021EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3022
3023/**
3024 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3025 * @dai: DAI
8c6529db
LG
3026 * @fmt: SND_SOC_DAIFMT_ format value.
3027 *
3028 * Configures the DAI hardware format and clocking.
3029 */
3030int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3031{
f0fba2ad
LG
3032 if (dai->driver && dai->driver->ops->set_fmt)
3033 return dai->driver->ops->set_fmt(dai, fmt);
8c6529db
LG
3034 else
3035 return -EINVAL;
3036}
3037EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3038
3039/**
3040 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3041 * @dai: DAI
a5479e38
DR
3042 * @tx_mask: bitmask representing active TX slots.
3043 * @rx_mask: bitmask representing active RX slots.
8c6529db 3044 * @slots: Number of slots in use.
a5479e38 3045 * @slot_width: Width in bits for each slot.
8c6529db
LG
3046 *
3047 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3048 * specific.
3049 */
3050int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
a5479e38 3051 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
8c6529db 3052{
f0fba2ad
LG
3053 if (dai->driver && dai->driver->ops->set_tdm_slot)
3054 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
a5479e38 3055 slots, slot_width);
8c6529db
LG
3056 else
3057 return -EINVAL;
3058}
3059EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3060
472df3cb
BS
3061/**
3062 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3063 * @dai: DAI
3064 * @tx_num: how many TX channels
3065 * @tx_slot: pointer to an array which imply the TX slot number channel
3066 * 0~num-1 uses
3067 * @rx_num: how many RX channels
3068 * @rx_slot: pointer to an array which imply the RX slot number channel
3069 * 0~num-1 uses
3070 *
3071 * configure the relationship between channel number and TDM slot number.
3072 */
3073int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3074 unsigned int tx_num, unsigned int *tx_slot,
3075 unsigned int rx_num, unsigned int *rx_slot)
3076{
f0fba2ad
LG
3077 if (dai->driver && dai->driver->ops->set_channel_map)
3078 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
472df3cb
BS
3079 rx_num, rx_slot);
3080 else
3081 return -EINVAL;
3082}
3083EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3084
8c6529db
LG
3085/**
3086 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3087 * @dai: DAI
3088 * @tristate: tristate enable
3089 *
3090 * Tristates the DAI so that others can use it.
3091 */
3092int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3093{
f0fba2ad
LG
3094 if (dai->driver && dai->driver->ops->set_tristate)
3095 return dai->driver->ops->set_tristate(dai, tristate);
8c6529db
LG
3096 else
3097 return -EINVAL;
3098}
3099EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3100
3101/**
3102 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3103 * @dai: DAI
3104 * @mute: mute enable
3105 *
3106 * Mutes the DAI DAC.
3107 */
3108int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3109{
f0fba2ad
LG
3110 if (dai->driver && dai->driver->ops->digital_mute)
3111 return dai->driver->ops->digital_mute(dai, mute);
8c6529db
LG
3112 else
3113 return -EINVAL;
3114}
3115EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3116
c5af3a2e
MB
3117/**
3118 * snd_soc_register_card - Register a card with the ASoC core
3119 *
ac11a2b3 3120 * @card: Card to register
c5af3a2e
MB
3121 *
3122 * Note that currently this is an internal only function: it will be
3123 * exposed to machine drivers after further backporting of ASoC v2
3124 * registration APIs.
3125 */
3126static int snd_soc_register_card(struct snd_soc_card *card)
3127{
f0fba2ad
LG
3128 int i;
3129
c5af3a2e
MB
3130 if (!card->name || !card->dev)
3131 return -EINVAL;
3132
2eea392d
JN
3133 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
3134 (card->num_links + card->num_aux_devs),
3135 GFP_KERNEL);
f0fba2ad
LG
3136 if (card->rtd == NULL)
3137 return -ENOMEM;
2eea392d 3138 card->rtd_aux = &card->rtd[card->num_links];
f0fba2ad
LG
3139
3140 for (i = 0; i < card->num_links; i++)
3141 card->rtd[i].dai_link = &card->dai_link[i];
3142
c5af3a2e
MB
3143 INIT_LIST_HEAD(&card->list);
3144 card->instantiated = 0;
f0fba2ad 3145 mutex_init(&card->mutex);
c5af3a2e
MB
3146
3147 mutex_lock(&client_mutex);
3148 list_add(&card->list, &card_list);
435c5e25 3149 snd_soc_instantiate_cards();
c5af3a2e
MB
3150 mutex_unlock(&client_mutex);
3151
3152 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3153
3154 return 0;
3155}
3156
3157/**
3158 * snd_soc_unregister_card - Unregister a card with the ASoC core
3159 *
ac11a2b3 3160 * @card: Card to unregister
c5af3a2e
MB
3161 *
3162 * Note that currently this is an internal only function: it will be
3163 * exposed to machine drivers after further backporting of ASoC v2
3164 * registration APIs.
3165 */
3166static int snd_soc_unregister_card(struct snd_soc_card *card)
3167{
3168 mutex_lock(&client_mutex);
3169 list_del(&card->list);
3170 mutex_unlock(&client_mutex);
c5af3a2e
MB
3171 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3172
3173 return 0;
3174}
3175
f0fba2ad
LG
3176/*
3177 * Simplify DAI link configuration by removing ".-1" from device names
3178 * and sanitizing names.
3179 */
0b9a214a 3180static char *fmt_single_name(struct device *dev, int *id)
f0fba2ad
LG
3181{
3182 char *found, name[NAME_SIZE];
3183 int id1, id2;
3184
3185 if (dev_name(dev) == NULL)
3186 return NULL;
3187
58818a77 3188 strlcpy(name, dev_name(dev), NAME_SIZE);
f0fba2ad
LG
3189
3190 /* are we a "%s.%d" name (platform and SPI components) */
3191 found = strstr(name, dev->driver->name);
3192 if (found) {
3193 /* get ID */
3194 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3195
3196 /* discard ID from name if ID == -1 */
3197 if (*id == -1)
3198 found[strlen(dev->driver->name)] = '\0';
3199 }
3200
3201 } else {
3202 /* I2C component devices are named "bus-addr" */
3203 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3204 char tmp[NAME_SIZE];
3205
3206 /* create unique ID number from I2C addr and bus */
05899446 3207 *id = ((id1 & 0xffff) << 16) + id2;
f0fba2ad
LG
3208
3209 /* sanitize component name for DAI link creation */
3210 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
58818a77 3211 strlcpy(name, tmp, NAME_SIZE);
f0fba2ad
LG
3212 } else
3213 *id = 0;
3214 }
3215
3216 return kstrdup(name, GFP_KERNEL);
3217}
3218
3219/*
3220 * Simplify DAI link naming for single devices with multiple DAIs by removing
3221 * any ".-1" and using the DAI name (instead of device name).
3222 */
3223static inline char *fmt_multiple_name(struct device *dev,
3224 struct snd_soc_dai_driver *dai_drv)
3225{
3226 if (dai_drv->name == NULL) {
3227 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
3228 dev_name(dev));
3229 return NULL;
3230 }
3231
3232 return kstrdup(dai_drv->name, GFP_KERNEL);
3233}
3234
9115171a
MB
3235/**
3236 * snd_soc_register_dai - Register a DAI with the ASoC core
3237 *
ac11a2b3 3238 * @dai: DAI to register
9115171a 3239 */
f0fba2ad
LG
3240int snd_soc_register_dai(struct device *dev,
3241 struct snd_soc_dai_driver *dai_drv)
9115171a 3242{
f0fba2ad
LG
3243 struct snd_soc_dai *dai;
3244
3245 dev_dbg(dev, "dai register %s\n", dev_name(dev));
9115171a 3246
f0fba2ad
LG
3247 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3248 if (dai == NULL)
3249 return -ENOMEM;
9115171a 3250
f0fba2ad
LG
3251 /* create DAI component name */
3252 dai->name = fmt_single_name(dev, &dai->id);
3253 if (dai->name == NULL) {
3254 kfree(dai);
3255 return -ENOMEM;
3256 }
6335d055 3257
f0fba2ad
LG
3258 dai->dev = dev;
3259 dai->driver = dai_drv;
3260 if (!dai->driver->ops)
3261 dai->driver->ops = &null_dai_ops;
9115171a
MB
3262
3263 mutex_lock(&client_mutex);
3264 list_add(&dai->list, &dai_list);
435c5e25 3265 snd_soc_instantiate_cards();
9115171a
MB
3266 mutex_unlock(&client_mutex);
3267
3268 pr_debug("Registered DAI '%s'\n", dai->name);
3269
3270 return 0;
3271}
3272EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3273
3274/**
3275 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3276 *
ac11a2b3 3277 * @dai: DAI to unregister
9115171a 3278 */
f0fba2ad 3279void snd_soc_unregister_dai(struct device *dev)
9115171a 3280{
f0fba2ad
LG
3281 struct snd_soc_dai *dai;
3282
3283 list_for_each_entry(dai, &dai_list, list) {
3284 if (dev == dai->dev)
3285 goto found;
3286 }
3287 return;
3288
3289found:
9115171a
MB
3290 mutex_lock(&client_mutex);
3291 list_del(&dai->list);
3292 mutex_unlock(&client_mutex);
3293
3294 pr_debug("Unregistered DAI '%s'\n", dai->name);
f0fba2ad
LG
3295 kfree(dai->name);
3296 kfree(dai);
9115171a
MB
3297}
3298EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3299
3300/**
3301 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3302 *
ac11a2b3
MB
3303 * @dai: Array of DAIs to register
3304 * @count: Number of DAIs
9115171a 3305 */
f0fba2ad
LG
3306int snd_soc_register_dais(struct device *dev,
3307 struct snd_soc_dai_driver *dai_drv, size_t count)
9115171a 3308{
f0fba2ad
LG
3309 struct snd_soc_dai *dai;
3310 int i, ret = 0;
3311
720ffa4c 3312 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
9115171a
MB
3313
3314 for (i = 0; i < count; i++) {
f0fba2ad
LG
3315
3316 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
c46e0079
AL
3317 if (dai == NULL) {
3318 ret = -ENOMEM;
3319 goto err;
3320 }
f0fba2ad
LG
3321
3322 /* create DAI component name */
3323 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3324 if (dai->name == NULL) {
3325 kfree(dai);
3326 ret = -EINVAL;
9115171a 3327 goto err;
f0fba2ad
LG
3328 }
3329
3330 dai->dev = dev;
f0fba2ad 3331 dai->driver = &dai_drv[i];
0f9141c9
MB
3332 if (dai->driver->id)
3333 dai->id = dai->driver->id;
3334 else
3335 dai->id = i;
f0fba2ad
LG
3336 if (!dai->driver->ops)
3337 dai->driver->ops = &null_dai_ops;
3338
3339 mutex_lock(&client_mutex);
3340 list_add(&dai->list, &dai_list);
3341 mutex_unlock(&client_mutex);
3342
3343 pr_debug("Registered DAI '%s'\n", dai->name);
9115171a
MB
3344 }
3345
1dcb4f38 3346 mutex_lock(&client_mutex);
f0fba2ad 3347 snd_soc_instantiate_cards();
1dcb4f38 3348 mutex_unlock(&client_mutex);
9115171a
MB
3349 return 0;
3350
3351err:
3352 for (i--; i >= 0; i--)
f0fba2ad 3353 snd_soc_unregister_dai(dev);
9115171a
MB
3354
3355 return ret;
3356}
3357EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3358
3359/**
3360 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3361 *
ac11a2b3
MB
3362 * @dai: Array of DAIs to unregister
3363 * @count: Number of DAIs
9115171a 3364 */
f0fba2ad 3365void snd_soc_unregister_dais(struct device *dev, size_t count)
9115171a
MB
3366{
3367 int i;
3368
3369 for (i = 0; i < count; i++)
f0fba2ad 3370 snd_soc_unregister_dai(dev);
9115171a
MB
3371}
3372EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3373
12a48a8c
MB
3374/**
3375 * snd_soc_register_platform - Register a platform with the ASoC core
3376 *
ac11a2b3 3377 * @platform: platform to register
12a48a8c 3378 */
f0fba2ad
LG
3379int snd_soc_register_platform(struct device *dev,
3380 struct snd_soc_platform_driver *platform_drv)
12a48a8c 3381{
f0fba2ad
LG
3382 struct snd_soc_platform *platform;
3383
3384 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3385
3386 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3387 if (platform == NULL)
3388 return -ENOMEM;
3389
3390 /* create platform component name */
3391 platform->name = fmt_single_name(dev, &platform->id);
3392 if (platform->name == NULL) {
3393 kfree(platform);
3394 return -ENOMEM;
3395 }
12a48a8c 3396
f0fba2ad
LG
3397 platform->dev = dev;
3398 platform->driver = platform_drv;
12a48a8c
MB
3399
3400 mutex_lock(&client_mutex);
3401 list_add(&platform->list, &platform_list);
435c5e25 3402 snd_soc_instantiate_cards();
12a48a8c
MB
3403 mutex_unlock(&client_mutex);
3404
3405 pr_debug("Registered platform '%s'\n", platform->name);
3406
3407 return 0;
3408}
3409EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3410
3411/**
3412 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3413 *
ac11a2b3 3414 * @platform: platform to unregister
12a48a8c 3415 */
f0fba2ad 3416void snd_soc_unregister_platform(struct device *dev)
12a48a8c 3417{
f0fba2ad
LG
3418 struct snd_soc_platform *platform;
3419
3420 list_for_each_entry(platform, &platform_list, list) {
3421 if (dev == platform->dev)
3422 goto found;
3423 }
3424 return;
3425
3426found:
12a48a8c
MB
3427 mutex_lock(&client_mutex);
3428 list_del(&platform->list);
3429 mutex_unlock(&client_mutex);
3430
3431 pr_debug("Unregistered platform '%s'\n", platform->name);
f0fba2ad
LG
3432 kfree(platform->name);
3433 kfree(platform);
12a48a8c
MB
3434}
3435EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3436
151ab22c
MB
3437static u64 codec_format_map[] = {
3438 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3439 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3440 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3441 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3442 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3443 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3444 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3445 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3446 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3447 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3448 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3449 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3450 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3451 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3452 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3453 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3454};
3455
3456/* Fix up the DAI formats for endianness: codecs don't actually see
3457 * the endianness of the data but we're using the CPU format
3458 * definitions which do need to include endianness so we ensure that
3459 * codec DAIs always have both big and little endian variants set.
3460 */
3461static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3462{
3463 int i;
3464
3465 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3466 if (stream->formats & codec_format_map[i])
3467 stream->formats |= codec_format_map[i];
3468}
3469
0d0cf00a
MB
3470/**
3471 * snd_soc_register_codec - Register a codec with the ASoC core
3472 *
ac11a2b3 3473 * @codec: codec to register
0d0cf00a 3474 */
f0fba2ad 3475int snd_soc_register_codec(struct device *dev,
001ae4c0
MB
3476 const struct snd_soc_codec_driver *codec_drv,
3477 struct snd_soc_dai_driver *dai_drv,
3478 int num_dai)
0d0cf00a 3479{
3335ddca 3480 size_t reg_size;
f0fba2ad
LG
3481 struct snd_soc_codec *codec;
3482 int ret, i;
151ab22c 3483
f0fba2ad
LG
3484 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3485
3486 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3487 if (codec == NULL)
3488 return -ENOMEM;
0d0cf00a 3489
f0fba2ad
LG
3490 /* create CODEC component name */
3491 codec->name = fmt_single_name(dev, &codec->id);
3492 if (codec->name == NULL) {
3493 kfree(codec);
3494 return -ENOMEM;
3495 }
3496
23bbce34
DP
3497 if (codec_drv->compress_type)
3498 codec->compress_type = codec_drv->compress_type;
3499 else
3500 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3501
ce6120cc
LG
3502 INIT_LIST_HEAD(&codec->dapm.widgets);
3503 INIT_LIST_HEAD(&codec->dapm.paths);
c3acec26
MB
3504 codec->write = codec_drv->write;
3505 codec->read = codec_drv->read;
ce6120cc
LG
3506 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3507 codec->dapm.dev = dev;
3508 codec->dapm.codec = codec;
7a30a3db
DP
3509 codec->dev = dev;
3510 codec->driver = codec_drv;
3511 codec->num_dai = num_dai;
3512 mutex_init(&codec->mutex);
ce6120cc 3513
f0fba2ad
LG
3514 /* allocate CODEC register cache */
3515 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3335ddca
DP
3516 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3517 /* it is necessary to make a copy of the default register cache
3518 * because in the case of using a compression type that requires
3519 * the default register cache to be marked as __devinitconst the
3520 * kernel might have freed the array by the time we initialize
3521 * the cache.
3522 */
3523 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3524 reg_size, GFP_KERNEL);
3525 if (!codec->reg_def_copy) {
3526 ret = -ENOMEM;
fdf0f54d 3527 goto fail;
f0fba2ad 3528 }
151ab22c
MB
3529 }
3530
f0fba2ad
LG
3531 for (i = 0; i < num_dai; i++) {
3532 fixup_codec_formats(&dai_drv[i].playback);
3533 fixup_codec_formats(&dai_drv[i].capture);
3534 }
3535
26b01ccd
MB
3536 /* register any DAIs */
3537 if (num_dai) {
3538 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3539 if (ret < 0)
fdf0f54d 3540 goto fail;
26b01ccd 3541 }
f0fba2ad 3542
0d0cf00a
MB
3543 mutex_lock(&client_mutex);
3544 list_add(&codec->list, &codec_list);
3545 snd_soc_instantiate_cards();
3546 mutex_unlock(&client_mutex);
3547
3548 pr_debug("Registered codec '%s'\n", codec->name);
0d0cf00a 3549 return 0;
f0fba2ad 3550
fdf0f54d 3551fail:
3335ddca
DP
3552 kfree(codec->reg_def_copy);
3553 codec->reg_def_copy = NULL;
f0fba2ad
LG
3554 kfree(codec->name);
3555 kfree(codec);
3556 return ret;
0d0cf00a
MB
3557}
3558EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3559
3560/**
3561 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3562 *
ac11a2b3 3563 * @codec: codec to unregister
0d0cf00a 3564 */
f0fba2ad 3565void snd_soc_unregister_codec(struct device *dev)
0d0cf00a 3566{
f0fba2ad
LG
3567 struct snd_soc_codec *codec;
3568 int i;
3569
3570 list_for_each_entry(codec, &codec_list, list) {
3571 if (dev == codec->dev)
3572 goto found;
3573 }
3574 return;
3575
3576found:
26b01ccd
MB
3577 if (codec->num_dai)
3578 for (i = 0; i < codec->num_dai; i++)
3579 snd_soc_unregister_dai(dev);
f0fba2ad 3580
0d0cf00a
MB
3581 mutex_lock(&client_mutex);
3582 list_del(&codec->list);
3583 mutex_unlock(&client_mutex);
3584
3585 pr_debug("Unregistered codec '%s'\n", codec->name);
f0fba2ad 3586
7a30a3db 3587 snd_soc_cache_exit(codec);
3335ddca 3588 kfree(codec->reg_def_copy);
1aafcd4d 3589 kfree(codec->name);
f0fba2ad 3590 kfree(codec);
0d0cf00a
MB
3591}
3592EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3593
c9b3a40f 3594static int __init snd_soc_init(void)
db2a4165 3595{
384c89e2
MB
3596#ifdef CONFIG_DEBUG_FS
3597 debugfs_root = debugfs_create_dir("asoc", NULL);
3598 if (IS_ERR(debugfs_root) || !debugfs_root) {
3599 printk(KERN_WARNING
3600 "ASoC: Failed to create debugfs directory\n");
3601 debugfs_root = NULL;
3602 }
c3c5a19a
MB
3603
3604 if (!debugfs_create_file("codecs", 0444, debugfs_root, NULL,
3605 &codec_list_fops))
3606 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3607
f3208780
MB
3608 if (!debugfs_create_file("dais", 0444, debugfs_root, NULL,
3609 &dai_list_fops))
3610 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
19c7ac27
MB
3611
3612 if (!debugfs_create_file("platforms", 0444, debugfs_root, NULL,
3613 &platform_list_fops))
3614 pr_warn("ASoC: Failed to create platform list debugfs file\n");
384c89e2
MB
3615#endif
3616
db2a4165
FM
3617 return platform_driver_register(&soc_driver);
3618}
4abe8e16 3619module_init(snd_soc_init);
db2a4165 3620
7d8c16a6 3621static void __exit snd_soc_exit(void)
db2a4165 3622{
384c89e2
MB
3623#ifdef CONFIG_DEBUG_FS
3624 debugfs_remove_recursive(debugfs_root);
3625#endif
3ff3f64b 3626 platform_driver_unregister(&soc_driver);
db2a4165 3627}
db2a4165
FM
3628module_exit(snd_soc_exit);
3629
3630/* Module information */
d331124d 3631MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
db2a4165
FM
3632MODULE_DESCRIPTION("ALSA SoC Core");
3633MODULE_LICENSE("GPL");
8b45a209 3634MODULE_ALIAS("platform:soc-audio");