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ASoC: Check for a CODEC before dereferencing in DAPM
[GitHub/mt8127/android_kernel_alcatel_ttab.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 50#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 51struct dentry *snd_soc_debugfs_root;
52EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
384c89e2
MB		 53#endif
54
c5af3a2e
MB		 55static DEFINE_MUTEX(client_mutex);
56static LIST_HEAD(card_list);
9115171a 57static LIST_HEAD(dai_list);
12a48a8c 58static LIST_HEAD(platform_list);
0d0cf00a 59static LIST_HEAD(codec_list);
c5af3a2e 60
f0fba2ad 61static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
c5af3a2e 62
db2a4165
FM		 63/*
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
67 */
68static int pmdown_time = 5000;
69module_param(pmdown_time, int, 0);
70MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
71
2bc9a81e
DP		 72/* returns the minimum number of bytes needed to represent
73 * a particular given value */
74static int min_bytes_needed(unsigned long val)
75{
76 int c = 0;
77 int i;
78
79 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
80 if (val & (1UL << i))
81 break;
82 c = (sizeof val * 8) - c;
83 if (!c || (c % 8))
84 c = (c + 8) / 8;
85 else
86 c /= 8;
87 return c;
88}
89
13fd179f
DP		 90/* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92static int format_register_str(struct snd_soc_codec *codec,
93 unsigned int reg, char *buf, size_t len)
94{
95 int wordsize = codec->driver->reg_word_size * 2;
96 int regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
97 int ret;
98 char tmpbuf[len + 1];
99 char regbuf[regsize + 1];
100
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
103 WARN_ON(len > 63);
104
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize + regsize + 2 + 1 != len)
107 return -EINVAL;
108
109 ret = snd_soc_read(codec , reg);
110 if (ret < 0) {
111 memset(regbuf, 'X', regsize);
112 regbuf[regsize] = '\0';
113 } else {
114 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
115 }
116
117 /* prepare the buffer */
118 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf, tmpbuf, len);
121
122 return 0;
123}
124
2624d5fa 125/* codec register dump */
13fd179f
DP		 126static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
127 size_t count, loff_t pos)
2624d5fa 128{
13fd179f 129 int i, step = 1;
2bc9a81e 130 int wordsize, regsize;
13fd179f
DP		 131 int len;
132 size_t total = 0;
133 loff_t p = 0;
2bc9a81e
DP		 134
135 wordsize = codec->driver->reg_word_size * 2;
136 regsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
2624d5fa 137
13fd179f
DP		 138 len = wordsize + regsize + 2 + 1;
139
f0fba2ad 140 if (!codec->driver->reg_cache_size)
2624d5fa
MB		 141 return 0;
142
f0fba2ad
LG		 143 if (codec->driver->reg_cache_step)
144 step = codec->driver->reg_cache_step;
2624d5fa 145
f0fba2ad 146 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
1500b7b5 147 if (codec->readable_register && !codec->readable_register(codec, i))
2624d5fa 148 continue;
f0fba2ad
LG		 149 if (codec->driver->display_register) {
150 count += codec->driver->display_register(codec, buf + count,
2624d5fa 151 PAGE_SIZE - count, i);
5164d74d 152 } else {
13fd179f
DP		 153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
155 if (p >= pos) {
156 if (total + len >= count - 1)
157 break;
158 format_register_str(codec, i, buf + total, len);
159 total += len;
160 }
161 p += len;
5164d74d 162 }
2624d5fa
MB		 163 }
164
13fd179f 165 total = min(total, count - 1);
2624d5fa 166
13fd179f 167 return total;
2624d5fa 168}
13fd179f 169
2624d5fa
MB		 170static ssize_t codec_reg_show(struct device *dev,
171 struct device_attribute *attr, char *buf)
172{
f0fba2ad
LG		 173 struct snd_soc_pcm_runtime *rtd =
174 container_of(dev, struct snd_soc_pcm_runtime, dev);
175
13fd179f 176 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
2624d5fa
MB		 177}
178
179static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
180
dbe21408
MB		 181static ssize_t pmdown_time_show(struct device *dev,
182 struct device_attribute *attr, char *buf)
183{
f0fba2ad
LG		 184 struct snd_soc_pcm_runtime *rtd =
185 container_of(dev, struct snd_soc_pcm_runtime, dev);
dbe21408 186
f0fba2ad 187 return sprintf(buf, "%ld\n", rtd->pmdown_time);
dbe21408
MB		 188}
189
190static ssize_t pmdown_time_set(struct device *dev,
191 struct device_attribute *attr,
192 const char *buf, size_t count)
193{
f0fba2ad
LG		 194 struct snd_soc_pcm_runtime *rtd =
195 container_of(dev, struct snd_soc_pcm_runtime, dev);
c593b520 196 int ret;
dbe21408 197
c593b520
MB		 198 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
199 if (ret)
200 return ret;
dbe21408
MB		 201
202 return count;
203}
204
205static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
206
2624d5fa
MB		 207#ifdef CONFIG_DEBUG_FS
208static int codec_reg_open_file(struct inode *inode, struct file *file)
209{
210 file->private_data = inode->i_private;
211 return 0;
212}
213
214static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
13fd179f 215 size_t count, loff_t *ppos)
2624d5fa
MB		 216{
217 ssize_t ret;
218 struct snd_soc_codec *codec = file->private_data;
13fd179f
DP		 219 char *buf;
220
221 if (*ppos < 0 || !count)
222 return -EINVAL;
223
224 buf = kmalloc(count, GFP_KERNEL);
2624d5fa
MB		 225 if (!buf)
226 return -ENOMEM;
13fd179f
DP		 227
228 ret = soc_codec_reg_show(codec, buf, count, *ppos);
229 if (ret >= 0) {
230 if (copy_to_user(user_buf, buf, ret)) {
231 kfree(buf);
232 return -EFAULT;
233 }
234 *ppos += ret;
235 }
236
2624d5fa
MB		 237 kfree(buf);
238 return ret;
239}
240
241static ssize_t codec_reg_write_file(struct file *file,
242 const char __user *user_buf, size_t count, loff_t *ppos)
243{
244 char buf[32];
245 int buf_size;
246 char *start = buf;
247 unsigned long reg, value;
248 int step = 1;
249 struct snd_soc_codec *codec = file->private_data;
250
251 buf_size = min(count, (sizeof(buf)-1));
252 if (copy_from_user(buf, user_buf, buf_size))
253 return -EFAULT;
254 buf[buf_size] = 0;
255
f0fba2ad
LG		 256 if (codec->driver->reg_cache_step)
257 step = codec->driver->reg_cache_step;
2624d5fa
MB		 258
259 while (*start == ' ')
260 start++;
261 reg = simple_strtoul(start, &start, 16);
f0fba2ad 262 if ((reg >= codec->driver->reg_cache_size) || (reg % step))
2624d5fa
MB		 263 return -EINVAL;
264 while (*start == ' ')
265 start++;
266 if (strict_strtoul(start, 16, &value))
267 return -EINVAL;
0d51a9cb
MB		 268
269 /* Userspace has been fiddling around behind the kernel's back */
270 add_taint(TAINT_USER);
271
e4f078d8 272 snd_soc_write(codec, reg, value);
2624d5fa
MB		 273 return buf_size;
274}
275
276static const struct file_operations codec_reg_fops = {
277 .open = codec_reg_open_file,
278 .read = codec_reg_read_file,
279 .write = codec_reg_write_file,
6038f373 280 .llseek = default_llseek,
2624d5fa
MB		 281};
282
283static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
284{
d6ce4cf3
JN		 285 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
286
287 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
288 debugfs_card_root);
2624d5fa
MB		 289 if (!codec->debugfs_codec_root) {
290 printk(KERN_WARNING
291 "ASoC: Failed to create codec debugfs directory\n");
292 return;
293 }
294
aaee8ef1
MB		 295 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
296 &codec->cache_sync);
297 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
298 &codec->cache_only);
299
2624d5fa
MB		 300 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
301 codec->debugfs_codec_root,
302 codec, &codec_reg_fops);
303 if (!codec->debugfs_reg)
304 printk(KERN_WARNING
305 "ASoC: Failed to create codec register debugfs file\n");
306
ce6120cc 307 codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
2624d5fa 308 codec->debugfs_codec_root);
ce6120cc 309 if (!codec->dapm.debugfs_dapm)
2624d5fa
MB		 310 printk(KERN_WARNING
311 "Failed to create DAPM debugfs directory\n");
312
ce6120cc 313 snd_soc_dapm_debugfs_init(&codec->dapm);
2624d5fa
MB		 314}
315
316static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
317{
318 debugfs_remove_recursive(codec->debugfs_codec_root);
319}
320
c3c5a19a
MB		 321static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
322 size_t count, loff_t *ppos)
323{
324 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 325 ssize_t len, ret = 0;
c3c5a19a
MB		 326 struct snd_soc_codec *codec;
327
328 if (!buf)
329 return -ENOMEM;
330
2b194f9d
MB		 331 list_for_each_entry(codec, &codec_list, list) {
332 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
333 codec->name);
334 if (len >= 0)
335 ret += len;
336 if (ret > PAGE_SIZE) {
337 ret = PAGE_SIZE;
338 break;
339 }
340 }
c3c5a19a
MB		 341
342 if (ret >= 0)
343 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
344
345 kfree(buf);
346
347 return ret;
348}
349
350static const struct file_operations codec_list_fops = {
351 .read = codec_list_read_file,
352 .llseek = default_llseek,/* read accesses f_pos */
353};
354
f3208780
MB		 355static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
356 size_t count, loff_t *ppos)
357{
358 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 359 ssize_t len, ret = 0;
f3208780
MB		 360 struct snd_soc_dai *dai;
361
362 if (!buf)
363 return -ENOMEM;
364
2b194f9d
MB		 365 list_for_each_entry(dai, &dai_list, list) {
366 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
367 if (len >= 0)
368 ret += len;
369 if (ret > PAGE_SIZE) {
370 ret = PAGE_SIZE;
371 break;
372 }
373 }
f3208780 374
2b194f9d 375 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
f3208780
MB		 376
377 kfree(buf);
378
379 return ret;
380}
381
382static const struct file_operations dai_list_fops = {
383 .read = dai_list_read_file,
384 .llseek = default_llseek,/* read accesses f_pos */
385};
386
19c7ac27
MB		 387static ssize_t platform_list_read_file(struct file *file,
388 char __user *user_buf,
389 size_t count, loff_t *ppos)
390{
391 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 392 ssize_t len, ret = 0;
19c7ac27
MB		 393 struct snd_soc_platform *platform;
394
395 if (!buf)
396 return -ENOMEM;
397
2b194f9d
MB		 398 list_for_each_entry(platform, &platform_list, list) {
399 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
400 platform->name);
401 if (len >= 0)
402 ret += len;
403 if (ret > PAGE_SIZE) {
404 ret = PAGE_SIZE;
405 break;
406 }
407 }
19c7ac27 408
2b194f9d 409 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
19c7ac27
MB		 410
411 kfree(buf);
412
413 return ret;
414}
415
416static const struct file_operations platform_list_fops = {
417 .read = platform_list_read_file,
418 .llseek = default_llseek,/* read accesses f_pos */
419};
420
a6052154
JN		 421static void soc_init_card_debugfs(struct snd_soc_card *card)
422{
423 card->debugfs_card_root = debugfs_create_dir(card->name,
8a9dab1a 424 snd_soc_debugfs_root);
3a45b867 425 if (!card->debugfs_card_root) {
a6052154
JN		 426 dev_warn(card->dev,
427 "ASoC: Failed to create codec debugfs directory\n");
3a45b867
JN		 428 return;
429 }
430
431 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
432 card->debugfs_card_root,
433 &card->pop_time);
434 if (!card->debugfs_pop_time)
435 dev_warn(card->dev,
436 "Failed to create pop time debugfs file\n");
a6052154
JN		 437}
438
439static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
440{
441 debugfs_remove_recursive(card->debugfs_card_root);
442}
443
2624d5fa
MB		 444#else
445
446static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
447{
448}
449
450static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
451{
452}
b95fccbc
AL		 453
454static inline void soc_init_card_debugfs(struct snd_soc_card *card)
455{
456}
457
458static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
459{
460}
2624d5fa
MB		 461#endif
462
db2a4165
FM		 463#ifdef CONFIG_SND_SOC_AC97_BUS
464/* unregister ac97 codec */
465static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
466{
467 if (codec->ac97->dev.bus)
468 device_unregister(&codec->ac97->dev);
469 return 0;
470}
471
472/* stop no dev release warning */
473static void soc_ac97_device_release(struct device *dev){}
474
475/* register ac97 codec to bus */
476static int soc_ac97_dev_register(struct snd_soc_codec *codec)
477{
478 int err;
479
480 codec->ac97->dev.bus = &ac97_bus_type;
4ac5c61f 481 codec->ac97->dev.parent = codec->card->dev;
db2a4165
FM		 482 codec->ac97->dev.release = soc_ac97_device_release;
483
bb072bf0 484 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
f0fba2ad 485 codec->card->snd_card->number, 0, codec->name);
db2a4165
FM		 486 err = device_register(&codec->ac97->dev);
487 if (err < 0) {
488 snd_printk(KERN_ERR "Can't register ac97 bus\n");
489 codec->ac97->dev.bus = NULL;
490 return err;
491 }
492 return 0;
493}
494#endif
495
06f409d7
MB		 496static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
497{
498 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 499 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
500 struct snd_soc_dai *codec_dai = rtd->codec_dai;
06f409d7
MB		 501 int ret;
502
f0fba2ad
LG		 503 if (codec_dai->driver->symmetric_rates || cpu_dai->driver->symmetric_rates ||
504 rtd->dai_link->symmetric_rates) {
505 dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n",
506 rtd->rate);
06f409d7
MB		 507
508 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
509 SNDRV_PCM_HW_PARAM_RATE,
f0fba2ad
LG		 510 rtd->rate,
511 rtd->rate);
06f409d7 512 if (ret < 0) {
f0fba2ad 513 dev_err(&rtd->dev,
06f409d7
MB		 514 "Unable to apply rate symmetry constraint: %d\n", ret);
515 return ret;
516 }
517 }
518
519 return 0;
520}
521
db2a4165
FM		 522/*
523 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
524 * then initialized and any private data can be allocated. This also calls
525 * startup for the cpu DAI, platform, machine and codec DAI.
526 */
527static int soc_pcm_open(struct snd_pcm_substream *substream)
528{
529 struct snd_soc_pcm_runtime *rtd = substream->private_data;
db2a4165 530 struct snd_pcm_runtime *runtime = substream->runtime;
f0fba2ad
LG		 531 struct snd_soc_platform *platform = rtd->platform;
532 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
533 struct snd_soc_dai *codec_dai = rtd->codec_dai;
534 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
535 struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
db2a4165
FM		 536 int ret = 0;
537
538 mutex_lock(&pcm_mutex);
539
540 /* startup the audio subsystem */
f0fba2ad
LG		 541 if (cpu_dai->driver->ops->startup) {
542 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
db2a4165
FM		 543 if (ret < 0) {
544 printk(KERN_ERR "asoc: can't open interface %s\n",
cb666e5b 545 cpu_dai->name);
db2a4165
FM		 546 goto out;
547 }
548 }
549
f0fba2ad
LG		 550 if (platform->driver->ops->open) {
551 ret = platform->driver->ops->open(substream);
db2a4165
FM		 552 if (ret < 0) {
553 printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
554 goto platform_err;
555 }
556 }
557
f0fba2ad
LG		 558 if (codec_dai->driver->ops->startup) {
559 ret = codec_dai->driver->ops->startup(substream, codec_dai);
db2a4165 560 if (ret < 0) {
cb666e5b
LG		 561 printk(KERN_ERR "asoc: can't open codec %s\n",
562 codec_dai->name);
563 goto codec_dai_err;
db2a4165
FM		 564 }
565 }
566
f0fba2ad
LG		 567 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
568 ret = rtd->dai_link->ops->startup(substream);
db2a4165 569 if (ret < 0) {
f0fba2ad 570 printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
cb666e5b 571 goto machine_err;
db2a4165
FM		 572 }
573 }
574
a00f90f9 575 /* Check that the codec and cpu DAIs are compatible */
db2a4165
FM		 576 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
577 runtime->hw.rate_min =
f0fba2ad
LG		 578 max(codec_dai_drv->playback.rate_min,
579 cpu_dai_drv->playback.rate_min);
db2a4165 580 runtime->hw.rate_max =
f0fba2ad
LG		 581 min(codec_dai_drv->playback.rate_max,
582 cpu_dai_drv->playback.rate_max);
db2a4165 583 runtime->hw.channels_min =
f0fba2ad
LG		 584 max(codec_dai_drv->playback.channels_min,
585 cpu_dai_drv->playback.channels_min);
db2a4165 586 runtime->hw.channels_max =
f0fba2ad
LG		 587 min(codec_dai_drv->playback.channels_max,
588 cpu_dai_drv->playback.channels_max);
cb666e5b 589 runtime->hw.formats =
f0fba2ad 590 codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
cb666e5b 591 runtime->hw.rates =
f0fba2ad
LG		 592 codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
593 if (codec_dai_drv->playback.rates
d9ad6296 594 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad
LG		 595 runtime->hw.rates |= cpu_dai_drv->playback.rates;
596 if (cpu_dai_drv->playback.rates
d9ad6296 597 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad 598 runtime->hw.rates |= codec_dai_drv->playback.rates;
db2a4165
FM		 599 } else {
600 runtime->hw.rate_min =
f0fba2ad
LG		 601 max(codec_dai_drv->capture.rate_min,
602 cpu_dai_drv->capture.rate_min);
db2a4165 603 runtime->hw.rate_max =
f0fba2ad
LG		 604 min(codec_dai_drv->capture.rate_max,
605 cpu_dai_drv->capture.rate_max);
db2a4165 606 runtime->hw.channels_min =
f0fba2ad
LG		 607 max(codec_dai_drv->capture.channels_min,
608 cpu_dai_drv->capture.channels_min);
db2a4165 609 runtime->hw.channels_max =
f0fba2ad
LG		 610 min(codec_dai_drv->capture.channels_max,
611 cpu_dai_drv->capture.channels_max);
cb666e5b 612 runtime->hw.formats =
f0fba2ad 613 codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
cb666e5b 614 runtime->hw.rates =
f0fba2ad
LG		 615 codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
616 if (codec_dai_drv->capture.rates
d9ad6296 617 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad
LG		 618 runtime->hw.rates |= cpu_dai_drv->capture.rates;
619 if (cpu_dai_drv->capture.rates
d9ad6296 620 & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
f0fba2ad 621 runtime->hw.rates |= codec_dai_drv->capture.rates;
db2a4165
FM		 622 }
623
624 snd_pcm_limit_hw_rates(runtime);
625 if (!runtime->hw.rates) {
626 printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
cb666e5b 627 codec_dai->name, cpu_dai->name);
bb1c0478 628 goto config_err;
db2a4165
FM		 629 }
630 if (!runtime->hw.formats) {
631 printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
cb666e5b 632 codec_dai->name, cpu_dai->name);
bb1c0478 633 goto config_err;
db2a4165
FM		 634 }
635 if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
636 printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
f0fba2ad 637 codec_dai->name, cpu_dai->name);
bb1c0478 638 goto config_err;
db2a4165
FM		 639 }
640
06f409d7
MB		 641 /* Symmetry only applies if we've already got an active stream. */
642 if (cpu_dai->active || codec_dai->active) {
643 ret = soc_pcm_apply_symmetry(substream);
644 if (ret != 0)
bb1c0478 645 goto config_err;
06f409d7
MB		 646 }
647
f0fba2ad
LG		 648 pr_debug("asoc: %s <-> %s info:\n",
649 codec_dai->name, cpu_dai->name);
f24368c2
MB		 650 pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
651 pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
652 runtime->hw.channels_max);
653 pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
654 runtime->hw.rate_max);
db2a4165 655
14dc5734 656 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
f0fba2ad
LG		 657 cpu_dai->playback_active++;
658 codec_dai->playback_active++;
14dc5734 659 } else {
f0fba2ad
LG		 660 cpu_dai->capture_active++;
661 codec_dai->capture_active++;
14dc5734
JB		 662 }
663 cpu_dai->active++;
664 codec_dai->active++;
f0fba2ad 665 rtd->codec->active++;
db2a4165
FM		 666 mutex_unlock(&pcm_mutex);
667 return 0;
668
bb1c0478 669config_err:
f0fba2ad
LG		 670 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
671 rtd->dai_link->ops->shutdown(substream);
db2a4165 672
bb1c0478 673machine_err:
f0fba2ad
LG		 674 if (codec_dai->driver->ops->shutdown)
675 codec_dai->driver->ops->shutdown(substream, codec_dai);
bb1c0478 676
cb666e5b 677codec_dai_err:
f0fba2ad
LG		 678 if (platform->driver->ops->close)
679 platform->driver->ops->close(substream);
db2a4165
FM		 680
681platform_err:
f0fba2ad
LG		 682 if (cpu_dai->driver->ops->shutdown)
683 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
db2a4165
FM		 684out:
685 mutex_unlock(&pcm_mutex);
686 return ret;
687}
688
689/*
3a4fa0a2 690 * Power down the audio subsystem pmdown_time msecs after close is called.
db2a4165
FM		 691 * This is to ensure there are no pops or clicks in between any music tracks
692 * due to DAPM power cycling.
693 */
4484bb2e 694static void close_delayed_work(struct work_struct *work)
db2a4165 695{
f0fba2ad
LG		 696 struct snd_soc_pcm_runtime *rtd =
697 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
698 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM		 699
700 mutex_lock(&pcm_mutex);
f0fba2ad
LG		 701
702 pr_debug("pop wq checking: %s status: %s waiting: %s\n",
703 codec_dai->driver->playback.stream_name,
704 codec_dai->playback_active ? "active" : "inactive",
705 codec_dai->pop_wait ? "yes" : "no");
706
707 /* are we waiting on this codec DAI stream */
708 if (codec_dai->pop_wait == 1) {
709 codec_dai->pop_wait = 0;
710 snd_soc_dapm_stream_event(rtd,
711 codec_dai->driver->playback.stream_name,
712 SND_SOC_DAPM_STREAM_STOP);
db2a4165 713 }
f0fba2ad 714
db2a4165
FM		 715 mutex_unlock(&pcm_mutex);
716}
717
718/*
719 * Called by ALSA when a PCM substream is closed. Private data can be
720 * freed here. The cpu DAI, codec DAI, machine and platform are also
721 * shutdown.
722 */
723static int soc_codec_close(struct snd_pcm_substream *substream)
724{
725 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 726 struct snd_soc_platform *platform = rtd->platform;
727 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
728 struct snd_soc_dai *codec_dai = rtd->codec_dai;
729 struct snd_soc_codec *codec = rtd->codec;
db2a4165
FM		 730
731 mutex_lock(&pcm_mutex);
732
14dc5734 733 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
f0fba2ad
LG		 734 cpu_dai->playback_active--;
735 codec_dai->playback_active--;
14dc5734 736 } else {
f0fba2ad
LG		 737 cpu_dai->capture_active--;
738 codec_dai->capture_active--;
db2a4165 739 }
14dc5734
JB		 740
741 cpu_dai->active--;
742 codec_dai->active--;
db2a4165
FM		 743 codec->active--;
744
6010b2da
MB		 745 /* Muting the DAC suppresses artifacts caused during digital
746 * shutdown, for example from stopping clocks.
747 */
748 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
749 snd_soc_dai_digital_mute(codec_dai, 1);
750
f0fba2ad
LG		 751 if (cpu_dai->driver->ops->shutdown)
752 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
db2a4165 753
f0fba2ad
LG		 754 if (codec_dai->driver->ops->shutdown)
755 codec_dai->driver->ops->shutdown(substream, codec_dai);
db2a4165 756
f0fba2ad
LG		 757 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
758 rtd->dai_link->ops->shutdown(substream);
db2a4165 759
f0fba2ad
LG		 760 if (platform->driver->ops->close)
761 platform->driver->ops->close(substream);
762 cpu_dai->runtime = NULL;
db2a4165
FM		 763
764 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
765 /* start delayed pop wq here for playback streams */
cb666e5b 766 codec_dai->pop_wait = 1;
f0fba2ad
LG		 767 schedule_delayed_work(&rtd->delayed_work,
768 msecs_to_jiffies(rtd->pmdown_time));
db2a4165
FM		 769 } else {
770 /* capture streams can be powered down now */
f0fba2ad
LG		 771 snd_soc_dapm_stream_event(rtd,
772 codec_dai->driver->capture.stream_name,
0b4d221b 773 SND_SOC_DAPM_STREAM_STOP);
db2a4165
FM		 774 }
775
776 mutex_unlock(&pcm_mutex);
777 return 0;
778}
779
780/*
781 * Called by ALSA when the PCM substream is prepared, can set format, sample
782 * rate, etc. This function is non atomic and can be called multiple times,
783 * it can refer to the runtime info.
784 */
785static int soc_pcm_prepare(struct snd_pcm_substream *substream)
786{
787 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 788 struct snd_soc_platform *platform = rtd->platform;
789 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
790 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM		 791 int ret = 0;
792
793 mutex_lock(&pcm_mutex);
cb666e5b 794
f0fba2ad
LG		 795 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
796 ret = rtd->dai_link->ops->prepare(substream);
cb666e5b
LG		 797 if (ret < 0) {
798 printk(KERN_ERR "asoc: machine prepare error\n");
799 goto out;
800 }
801 }
802
f0fba2ad
LG		 803 if (platform->driver->ops->prepare) {
804 ret = platform->driver->ops->prepare(substream);
a71a468a
LG		 805 if (ret < 0) {
806 printk(KERN_ERR "asoc: platform prepare error\n");
db2a4165 807 goto out;
a71a468a 808 }
db2a4165
FM		 809 }
810
f0fba2ad
LG		 811 if (codec_dai->driver->ops->prepare) {
812 ret = codec_dai->driver->ops->prepare(substream, codec_dai);
a71a468a
LG		 813 if (ret < 0) {
814 printk(KERN_ERR "asoc: codec DAI prepare error\n");
db2a4165 815 goto out;
a71a468a 816 }
db2a4165
FM		 817 }
818
f0fba2ad
LG		 819 if (cpu_dai->driver->ops->prepare) {
820 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
cb666e5b
LG		 821 if (ret < 0) {
822 printk(KERN_ERR "asoc: cpu DAI prepare error\n");
823 goto out;
824 }
825 }
db2a4165 826
d45f6219
MB		 827 /* cancel any delayed stream shutdown that is pending */
828 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
829 codec_dai->pop_wait) {
830 codec_dai->pop_wait = 0;
f0fba2ad 831 cancel_delayed_work(&rtd->delayed_work);
d45f6219 832 }
db2a4165 833
452c5eaa 834 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
f0fba2ad
LG		 835 snd_soc_dapm_stream_event(rtd,
836 codec_dai->driver->playback.stream_name,
452c5eaa
MB		 837 SND_SOC_DAPM_STREAM_START);
838 else
f0fba2ad
LG		 839 snd_soc_dapm_stream_event(rtd,
840 codec_dai->driver->capture.stream_name,
452c5eaa 841 SND_SOC_DAPM_STREAM_START);
8c6529db 842
452c5eaa 843 snd_soc_dai_digital_mute(codec_dai, 0);
db2a4165
FM		 844
845out:
846 mutex_unlock(&pcm_mutex);
847 return ret;
848}
849
850/*
851 * Called by ALSA when the hardware params are set by application. This
852 * function can also be called multiple times and can allocate buffers
853 * (using snd_pcm_lib_* ). It's non-atomic.
854 */
855static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
856 struct snd_pcm_hw_params *params)
857{
858 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 859 struct snd_soc_platform *platform = rtd->platform;
860 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
861 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM		 862 int ret = 0;
863
864 mutex_lock(&pcm_mutex);
865
f0fba2ad
LG		 866 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
867 ret = rtd->dai_link->ops->hw_params(substream, params);
cb666e5b
LG		 868 if (ret < 0) {
869 printk(KERN_ERR "asoc: machine hw_params failed\n");
db2a4165 870 goto out;
cb666e5b 871 }
db2a4165
FM		 872 }
873
f0fba2ad
LG		 874 if (codec_dai->driver->ops->hw_params) {
875 ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
db2a4165
FM		 876 if (ret < 0) {
877 printk(KERN_ERR "asoc: can't set codec %s hw params\n",
cb666e5b
LG		 878 codec_dai->name);
879 goto codec_err;
db2a4165
FM		 880 }
881 }
882
f0fba2ad
LG		 883 if (cpu_dai->driver->ops->hw_params) {
884 ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
db2a4165 885 if (ret < 0) {
3ff3f64b 886 printk(KERN_ERR "asoc: interface %s hw params failed\n",
cb666e5b 887 cpu_dai->name);
db2a4165
FM		 888 goto interface_err;
889 }
890 }
891
f0fba2ad
LG		 892 if (platform->driver->ops->hw_params) {
893 ret = platform->driver->ops->hw_params(substream, params);
db2a4165 894 if (ret < 0) {
3ff3f64b 895 printk(KERN_ERR "asoc: platform %s hw params failed\n",
db2a4165
FM		 896 platform->name);
897 goto platform_err;
898 }
899 }
900
f0fba2ad 901 rtd->rate = params_rate(params);
06f409d7 902
db2a4165
FM		 903out:
904 mutex_unlock(&pcm_mutex);
905 return ret;
906
db2a4165 907platform_err:
f0fba2ad
LG		 908 if (cpu_dai->driver->ops->hw_free)
909 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
db2a4165
FM		 910
911interface_err:
f0fba2ad
LG		 912 if (codec_dai->driver->ops->hw_free)
913 codec_dai->driver->ops->hw_free(substream, codec_dai);
cb666e5b
LG		 914
915codec_err:
f0fba2ad
LG		 916 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
917 rtd->dai_link->ops->hw_free(substream);
db2a4165
FM		 918
919 mutex_unlock(&pcm_mutex);
920 return ret;
921}
922
923/*
a00f90f9 924 * Frees resources allocated by hw_params, can be called multiple times
db2a4165
FM		 925 */
926static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
927{
928 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 929 struct snd_soc_platform *platform = rtd->platform;
930 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
931 struct snd_soc_dai *codec_dai = rtd->codec_dai;
932 struct snd_soc_codec *codec = rtd->codec;
db2a4165
FM		 933
934 mutex_lock(&pcm_mutex);
935
936 /* apply codec digital mute */
8c6529db
LG		 937 if (!codec->active)
938 snd_soc_dai_digital_mute(codec_dai, 1);
db2a4165
FM		 939
940 /* free any machine hw params */
f0fba2ad
LG		 941 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
942 rtd->dai_link->ops->hw_free(substream);
db2a4165
FM		 943
944 /* free any DMA resources */
f0fba2ad
LG		 945 if (platform->driver->ops->hw_free)
946 platform->driver->ops->hw_free(substream);
db2a4165 947
a00f90f9 948 /* now free hw params for the DAIs */
f0fba2ad
LG		 949 if (codec_dai->driver->ops->hw_free)
950 codec_dai->driver->ops->hw_free(substream, codec_dai);
db2a4165 951
f0fba2ad
LG		 952 if (cpu_dai->driver->ops->hw_free)
953 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
db2a4165
FM		 954
955 mutex_unlock(&pcm_mutex);
956 return 0;
957}
958
959static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
960{
961 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 962 struct snd_soc_platform *platform = rtd->platform;
963 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
964 struct snd_soc_dai *codec_dai = rtd->codec_dai;
db2a4165
FM		 965 int ret;
966
f0fba2ad
LG		 967 if (codec_dai->driver->ops->trigger) {
968 ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
db2a4165
FM		 969 if (ret < 0)
970 return ret;
971 }
972
f0fba2ad
LG		 973 if (platform->driver->ops->trigger) {
974 ret = platform->driver->ops->trigger(substream, cmd);
db2a4165
FM		 975 if (ret < 0)
976 return ret;
977 }
978
f0fba2ad
LG		 979 if (cpu_dai->driver->ops->trigger) {
980 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
db2a4165
FM		 981 if (ret < 0)
982 return ret;
983 }
984 return 0;
985}
986
377b6f62
PU		 987/*
988 * soc level wrapper for pointer callback
258020d0
PU		 989 * If cpu_dai, codec_dai, platform driver has the delay callback, than
990 * the runtime->delay will be updated accordingly.
377b6f62
PU		 991 */
992static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
993{
994 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad
LG		 995 struct snd_soc_platform *platform = rtd->platform;
996 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
997 struct snd_soc_dai *codec_dai = rtd->codec_dai;
258020d0 998 struct snd_pcm_runtime *runtime = substream->runtime;
377b6f62 999 snd_pcm_uframes_t offset = 0;
258020d0 1000 snd_pcm_sframes_t delay = 0;
377b6f62 1001
f0fba2ad
LG		 1002 if (platform->driver->ops->pointer)
1003 offset = platform->driver->ops->pointer(substream);
377b6f62 1004
f0fba2ad
LG		 1005 if (cpu_dai->driver->ops->delay)
1006 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
258020d0 1007
f0fba2ad
LG		 1008 if (codec_dai->driver->ops->delay)
1009 delay += codec_dai->driver->ops->delay(substream, codec_dai);
258020d0 1010
f0fba2ad
LG		 1011 if (platform->driver->delay)
1012 delay += platform->driver->delay(substream, codec_dai);
258020d0
PU		 1013
1014 runtime->delay = delay;
1015
377b6f62
PU		 1016 return offset;
1017}
1018
db2a4165
FM		 1019/* ASoC PCM operations */
1020static struct snd_pcm_ops soc_pcm_ops = {
1021 .open = soc_pcm_open,
1022 .close = soc_codec_close,
1023 .hw_params = soc_pcm_hw_params,
1024 .hw_free = soc_pcm_hw_free,
1025 .prepare = soc_pcm_prepare,
1026 .trigger = soc_pcm_trigger,
377b6f62 1027 .pointer = soc_pcm_pointer,
db2a4165
FM		 1028};
1029
6f8ab4ac 1030#ifdef CONFIG_PM_SLEEP
db2a4165 1031/* powers down audio subsystem for suspend */
6f8ab4ac 1032int snd_soc_suspend(struct device *dev)
db2a4165 1033{
6f8ab4ac 1034 struct snd_soc_card *card = dev_get_drvdata(dev);
2eea392d 1035 struct snd_soc_codec *codec;
db2a4165
FM		 1036 int i;
1037
e3509ff0
DM		 1038 /* If the initialization of this soc device failed, there is no codec
1039 * associated with it. Just bail out in this case.
1040 */
f0fba2ad 1041 if (list_empty(&card->codec_dev_list))
e3509ff0
DM		 1042 return 0;
1043
6ed25978
AG		 1044 /* Due to the resume being scheduled into a workqueue we could
1045 * suspend before that's finished - wait for it to complete.
1046 */
f0fba2ad
LG		 1047 snd_power_lock(card->snd_card);
1048 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
1049 snd_power_unlock(card->snd_card);
6ed25978
AG		 1050
1051 /* we're going to block userspace touching us until resume completes */
f0fba2ad 1052 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
6ed25978 1053
a00f90f9 1054 /* mute any active DACs */
f0fba2ad
LG		 1055 for (i = 0; i < card->num_rtd; i++) {
1056 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1057 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 1058
f0fba2ad 1059 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1060 continue;
1061
f0fba2ad
LG		 1062 if (drv->ops->digital_mute && dai->playback_active)
1063 drv->ops->digital_mute(dai, 1);
db2a4165
FM		 1064 }
1065
4ccab3e7 1066 /* suspend all pcms */
f0fba2ad
LG		 1067 for (i = 0; i < card->num_rtd; i++) {
1068 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1069 continue;
1070
f0fba2ad 1071 snd_pcm_suspend_all(card->rtd[i].pcm);
3efab7dc 1072 }
4ccab3e7 1073
87506549 1074 if (card->suspend_pre)
70b2ac12 1075 card->suspend_pre(card);
db2a4165 1076
f0fba2ad
LG		 1077 for (i = 0; i < card->num_rtd; i++) {
1078 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1079 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 1080
f0fba2ad 1081 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1082 continue;
1083
f0fba2ad
LG		 1084 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
1085 cpu_dai->driver->suspend(cpu_dai);
1086 if (platform->driver->suspend && !platform->suspended) {
1087 platform->driver->suspend(cpu_dai);
1088 platform->suspended = 1;
1089 }
db2a4165
FM		 1090 }
1091
1092 /* close any waiting streams and save state */
f0fba2ad 1093 for (i = 0; i < card->num_rtd; i++) {
5b84ba26 1094 flush_delayed_work_sync(&card->rtd[i].delayed_work);
ce6120cc 1095 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
f0fba2ad 1096 }
db2a4165 1097
f0fba2ad
LG		 1098 for (i = 0; i < card->num_rtd; i++) {
1099 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 1100
f0fba2ad 1101 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1102 continue;
1103
f0fba2ad
LG		 1104 if (driver->playback.stream_name != NULL)
1105 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 1106 SND_SOC_DAPM_STREAM_SUSPEND);
f0fba2ad
LG		 1107
1108 if (driver->capture.stream_name != NULL)
1109 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM		 1110 SND_SOC_DAPM_STREAM_SUSPEND);
1111 }
1112
f0fba2ad 1113 /* suspend all CODECs */
2eea392d 1114 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 1115 /* If there are paths active then the CODEC will be held with
1116 * bias _ON and should not be suspended. */
1117 if (!codec->suspended && codec->driver->suspend) {
ce6120cc 1118 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 1119 case SND_SOC_BIAS_STANDBY:
1120 case SND_SOC_BIAS_OFF:
1121 codec->driver->suspend(codec, PMSG_SUSPEND);
1122 codec->suspended = 1;
1123 break;
1124 default:
1125 dev_dbg(codec->dev, "CODEC is on over suspend\n");
1126 break;
1127 }
1547aba9
MB		 1128 }
1129 }
db2a4165 1130
f0fba2ad
LG		 1131 for (i = 0; i < card->num_rtd; i++) {
1132 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 1133
f0fba2ad 1134 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1135 continue;
1136
f0fba2ad
LG		 1137 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
1138 cpu_dai->driver->suspend(cpu_dai);
db2a4165
FM		 1139 }
1140
87506549 1141 if (card->suspend_post)
70b2ac12 1142 card->suspend_post(card);
db2a4165
FM		 1143
1144 return 0;
1145}
6f8ab4ac 1146EXPORT_SYMBOL_GPL(snd_soc_suspend);
db2a4165 1147
6ed25978
AG		 1148/* deferred resume work, so resume can complete before we finished
1149 * setting our codec back up, which can be very slow on I2C
1150 */
1151static void soc_resume_deferred(struct work_struct *work)
db2a4165 1152{
f0fba2ad
LG		 1153 struct snd_soc_card *card =
1154 container_of(work, struct snd_soc_card, deferred_resume_work);
2eea392d 1155 struct snd_soc_codec *codec;
db2a4165
FM		 1156 int i;
1157
6ed25978
AG		 1158 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
1159 * so userspace apps are blocked from touching us
1160 */
1161
f0fba2ad 1162 dev_dbg(card->dev, "starting resume work\n");
6ed25978 1163
9949788b 1164 /* Bring us up into D2 so that DAPM starts enabling things */
f0fba2ad 1165 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
9949788b 1166
87506549 1167 if (card->resume_pre)
70b2ac12 1168 card->resume_pre(card);
db2a4165 1169
f0fba2ad
LG		 1170 /* resume AC97 DAIs */
1171 for (i = 0; i < card->num_rtd; i++) {
1172 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 1173
f0fba2ad 1174 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1175 continue;
1176
f0fba2ad
LG		 1177 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
1178 cpu_dai->driver->resume(cpu_dai);
1179 }
1180
2eea392d 1181 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 1182 /* If the CODEC was idle over suspend then it will have been
1183 * left with bias OFF or STANDBY and suspended so we must now
1184 * resume. Otherwise the suspend was suppressed.
1185 */
1186 if (codec->driver->resume && codec->suspended) {
ce6120cc 1187 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 1188 case SND_SOC_BIAS_STANDBY:
1189 case SND_SOC_BIAS_OFF:
1190 codec->driver->resume(codec);
1191 codec->suspended = 0;
1192 break;
1193 default:
1194 dev_dbg(codec->dev, "CODEC was on over suspend\n");
1195 break;
1196 }
1547aba9
MB		 1197 }
1198 }
db2a4165 1199
f0fba2ad
LG		 1200 for (i = 0; i < card->num_rtd; i++) {
1201 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 1202
f0fba2ad 1203 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1204 continue;
1205
f0fba2ad
LG		 1206 if (driver->playback.stream_name != NULL)
1207 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 1208 SND_SOC_DAPM_STREAM_RESUME);
f0fba2ad
LG		 1209
1210 if (driver->capture.stream_name != NULL)
1211 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM		 1212 SND_SOC_DAPM_STREAM_RESUME);
1213 }
1214
3ff3f64b 1215 /* unmute any active DACs */
f0fba2ad
LG		 1216 for (i = 0; i < card->num_rtd; i++) {
1217 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
1218 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 1219
f0fba2ad 1220 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1221 continue;
1222
f0fba2ad
LG		 1223 if (drv->ops->digital_mute && dai->playback_active)
1224 drv->ops->digital_mute(dai, 0);
db2a4165
FM		 1225 }
1226
f0fba2ad
LG		 1227 for (i = 0; i < card->num_rtd; i++) {
1228 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1229 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 1230
f0fba2ad 1231 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 1232 continue;
1233
f0fba2ad
LG		 1234 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
1235 cpu_dai->driver->resume(cpu_dai);
1236 if (platform->driver->resume && platform->suspended) {
1237 platform->driver->resume(cpu_dai);
1238 platform->suspended = 0;
1239 }
db2a4165
FM		 1240 }
1241
87506549 1242 if (card->resume_post)
70b2ac12 1243 card->resume_post(card);
db2a4165 1244
f0fba2ad 1245 dev_dbg(card->dev, "resume work completed\n");
6ed25978
AG		 1246
1247 /* userspace can access us now we are back as we were before */
f0fba2ad 1248 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
6ed25978
AG		 1249}
1250
1251/* powers up audio subsystem after a suspend */
6f8ab4ac 1252int snd_soc_resume(struct device *dev)
6ed25978 1253{
6f8ab4ac 1254 struct snd_soc_card *card = dev_get_drvdata(dev);
f0fba2ad 1255 int i;
b9dd94a8 1256
64ab9baa
MB		 1257 /* AC97 devices might have other drivers hanging off them so
1258 * need to resume immediately. Other drivers don't have that
1259 * problem and may take a substantial amount of time to resume
1260 * due to I/O costs and anti-pop so handle them out of line.
1261 */
f0fba2ad
LG		 1262 for (i = 0; i < card->num_rtd; i++) {
1263 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1264 if (cpu_dai->driver->ac97_control) {
1265 dev_dbg(dev, "Resuming AC97 immediately\n");
1266 soc_resume_deferred(&card->deferred_resume_work);
1267 } else {
1268 dev_dbg(dev, "Scheduling resume work\n");
1269 if (!schedule_work(&card->deferred_resume_work))
1270 dev_err(dev, "resume work item may be lost\n");
1271 }
64ab9baa 1272 }
6ed25978 1273
db2a4165
FM		 1274 return 0;
1275}
6f8ab4ac 1276EXPORT_SYMBOL_GPL(snd_soc_resume);
db2a4165 1277#else
6f8ab4ac
MB		 1278#define snd_soc_suspend NULL
1279#define snd_soc_resume NULL
db2a4165
FM		 1280#endif
1281
02a06d30
BS		 1282static struct snd_soc_dai_ops null_dai_ops = {
1283};
1284
f0fba2ad 1285static int soc_bind_dai_link(struct snd_soc_card *card, int num)
db2a4165 1286{
f0fba2ad
LG		 1287 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1288 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
fe3e78e0 1289 struct snd_soc_codec *codec;
435c5e25 1290 struct snd_soc_platform *platform;
f0fba2ad 1291 struct snd_soc_dai *codec_dai, *cpu_dai;
435c5e25 1292
f0fba2ad
LG		 1293 if (rtd->complete)
1294 return 1;
1295 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
435c5e25 1296
f0fba2ad
LG		 1297 /* do we already have the CPU DAI for this link ? */
1298 if (rtd->cpu_dai) {
1299 goto find_codec;
1300 }
1301 /* no, then find CPU DAI from registered DAIs*/
1302 list_for_each_entry(cpu_dai, &dai_list, list) {
1303 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
1304
1305 if (!try_module_get(cpu_dai->dev->driver->owner))
1306 return -ENODEV;
1307
1308 rtd->cpu_dai = cpu_dai;
1309 goto find_codec;
435c5e25 1310 }
435c5e25 1311 }
f0fba2ad
LG		 1312 dev_dbg(card->dev, "CPU DAI %s not registered\n",
1313 dai_link->cpu_dai_name);
6308419a 1314
f0fba2ad
LG		 1315find_codec:
1316 /* do we already have the CODEC for this link ? */
1317 if (rtd->codec) {
1318 goto find_platform;
1319 }
1320
1321 /* no, then find CODEC from registered CODECs*/
1322 list_for_each_entry(codec, &codec_list, list) {
1323 if (!strcmp(codec->name, dai_link->codec_name)) {
1324 rtd->codec = codec;
1325
f0fba2ad
LG		 1326 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
1327 list_for_each_entry(codec_dai, &dai_list, list) {
1328 if (codec->dev == codec_dai->dev &&
1329 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
1330 rtd->codec_dai = codec_dai;
1331 goto find_platform;
1332 }
435c5e25 1333 }
f0fba2ad
LG		 1334 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
1335 dai_link->codec_dai_name);
1336
1337 goto find_platform;
435c5e25 1338 }
f0fba2ad
LG		 1339 }
1340 dev_dbg(card->dev, "CODEC %s not registered\n",
1341 dai_link->codec_name);
6b05eda6 1342
f0fba2ad
LG		 1343find_platform:
1344 /* do we already have the CODEC DAI for this link ? */
1345 if (rtd->platform) {
1346 goto out;
c5af3a2e 1347 }
f0fba2ad
LG		 1348 /* no, then find CPU DAI from registered DAIs*/
1349 list_for_each_entry(platform, &platform_list, list) {
1350 if (!strcmp(platform->name, dai_link->platform_name)) {
f0fba2ad
LG		 1351 rtd->platform = platform;
1352 goto out;
1353 }
02a06d30
BS		 1354 }
1355
f0fba2ad
LG		 1356 dev_dbg(card->dev, "platform %s not registered\n",
1357 dai_link->platform_name);
1358 return 0;
1359
1360out:
1361 /* mark rtd as complete if we found all 4 of our client devices */
1362 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
1363 rtd->complete = 1;
1364 card->num_rtd++;
1365 }
1366 return 1;
1367}
1368
589c3563
JN		 1369static void soc_remove_codec(struct snd_soc_codec *codec)
1370{
1371 int err;
1372
1373 if (codec->driver->remove) {
1374 err = codec->driver->remove(codec);
1375 if (err < 0)
1376 dev_err(codec->dev,
1377 "asoc: failed to remove %s: %d\n",
1378 codec->name, err);
1379 }
1380
1381 /* Make sure all DAPM widgets are freed */
1382 snd_soc_dapm_free(&codec->dapm);
1383
1384 soc_cleanup_codec_debugfs(codec);
1385 codec->probed = 0;
1386 list_del(&codec->card_list);
1387 module_put(codec->dev->driver->owner);
1388}
1389
f0fba2ad
LG		 1390static void soc_remove_dai_link(struct snd_soc_card *card, int num)
1391{
1392 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1393 struct snd_soc_codec *codec = rtd->codec;
1394 struct snd_soc_platform *platform = rtd->platform;
1395 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1396 int err;
1397
1398 /* unregister the rtd device */
1399 if (rtd->dev_registered) {
1400 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
589c3563 1401 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
f0fba2ad
LG		 1402 device_unregister(&rtd->dev);
1403 rtd->dev_registered = 0;
1404 }
1405
1406 /* remove the CODEC DAI */
1407 if (codec_dai && codec_dai->probed) {
1408 if (codec_dai->driver->remove) {
1409 err = codec_dai->driver->remove(codec_dai);
1410 if (err < 0)
1411 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
6b05eda6 1412 }
f0fba2ad
LG		 1413 codec_dai->probed = 0;
1414 list_del(&codec_dai->card_list);
1415 }
6b05eda6 1416
f0fba2ad
LG		 1417 /* remove the platform */
1418 if (platform && platform->probed) {
1419 if (platform->driver->remove) {
1420 err = platform->driver->remove(platform);
1421 if (err < 0)
1422 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
1423 }
1424 platform->probed = 0;
1425 list_del(&platform->card_list);
1426 module_put(platform->dev->driver->owner);
1427 }
435c5e25 1428
f0fba2ad 1429 /* remove the CODEC */
589c3563
JN		 1430 if (codec && codec->probed)
1431 soc_remove_codec(codec);
db2a4165 1432
f0fba2ad
LG		 1433 /* remove the cpu_dai */
1434 if (cpu_dai && cpu_dai->probed) {
1435 if (cpu_dai->driver->remove) {
1436 err = cpu_dai->driver->remove(cpu_dai);
1437 if (err < 0)
1438 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
db2a4165 1439 }
f0fba2ad
LG		 1440 cpu_dai->probed = 0;
1441 list_del(&cpu_dai->card_list);
1442 module_put(cpu_dai->dev->driver->owner);
db2a4165 1443 }
f0fba2ad 1444}
db2a4165 1445
ead9b919
JN		 1446static void soc_set_name_prefix(struct snd_soc_card *card,
1447 struct snd_soc_codec *codec)
1448{
1449 int i;
1450
ff819b83 1451 if (card->codec_conf == NULL)
ead9b919
JN		 1452 return;
1453
ff819b83
DP		 1454 for (i = 0; i < card->num_configs; i++) {
1455 struct snd_soc_codec_conf *map = &card->codec_conf[i];
ead9b919
JN		 1456 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1457 codec->name_prefix = map->name_prefix;
1458 break;
1459 }
1460 }
1461}
1462
589c3563
JN		 1463static int soc_probe_codec(struct snd_soc_card *card,
1464 struct snd_soc_codec *codec)
1465{
1466 int ret = 0;
1467
1468 codec->card = card;
1469 codec->dapm.card = card;
1470 soc_set_name_prefix(card, codec);
1471
70d29331
JN		 1472 if (!try_module_get(codec->dev->driver->owner))
1473 return -ENODEV;
1474
589c3563
JN		 1475 if (codec->driver->probe) {
1476 ret = codec->driver->probe(codec);
1477 if (ret < 0) {
1478 dev_err(codec->dev,
1479 "asoc: failed to probe CODEC %s: %d\n",
1480 codec->name, ret);
70d29331 1481 goto err_probe;
589c3563
JN		 1482 }
1483 }
1484
1485 soc_init_codec_debugfs(codec);
1486
1487 /* mark codec as probed and add to card codec list */
1488 codec->probed = 1;
1489 list_add(&codec->card_list, &card->codec_dev_list);
7be31be8 1490 list_add(&codec->dapm.list, &card->dapm_list);
589c3563 1491
70d29331
JN		 1492 return 0;
1493
1494err_probe:
1495 module_put(codec->dev->driver->owner);
1496
589c3563
JN		 1497 return ret;
1498}
1499
f0fba2ad
LG		 1500static void rtd_release(struct device *dev) {}
1501
589c3563
JN		 1502static int soc_post_component_init(struct snd_soc_card *card,
1503 struct snd_soc_codec *codec,
1504 int num, int dailess)
1505{
1506 struct snd_soc_dai_link *dai_link = NULL;
1507 struct snd_soc_aux_dev *aux_dev = NULL;
1508 struct snd_soc_pcm_runtime *rtd;
1509 const char *temp, *name;
1510 int ret = 0;
1511
1512 if (!dailess) {
1513 dai_link = &card->dai_link[num];
1514 rtd = &card->rtd[num];
1515 name = dai_link->name;
1516 } else {
1517 aux_dev = &card->aux_dev[num];
1518 rtd = &card->rtd_aux[num];
1519 name = aux_dev->name;
1520 }
0962bb21 1521 rtd->card = card;
589c3563
JN		 1522
1523 /* machine controls, routes and widgets are not prefixed */
1524 temp = codec->name_prefix;
1525 codec->name_prefix = NULL;
1526
1527 /* do machine specific initialization */
1528 if (!dailess && dai_link->init)
1529 ret = dai_link->init(rtd);
1530 else if (dailess && aux_dev->init)
1531 ret = aux_dev->init(&codec->dapm);
1532 if (ret < 0) {
1533 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1534 return ret;
1535 }
1536 codec->name_prefix = temp;
1537
1538 /* Make sure all DAPM widgets are instantiated */
1539 snd_soc_dapm_new_widgets(&codec->dapm);
589c3563
JN		 1540
1541 /* register the rtd device */
1542 rtd->codec = codec;
589c3563
JN		 1543 rtd->dev.parent = card->dev;
1544 rtd->dev.release = rtd_release;
1545 rtd->dev.init_name = name;
1546 ret = device_register(&rtd->dev);
1547 if (ret < 0) {
1548 dev_err(card->dev,
1549 "asoc: failed to register runtime device: %d\n", ret);
1550 return ret;
1551 }
1552 rtd->dev_registered = 1;
1553
1554 /* add DAPM sysfs entries for this codec */
1555 ret = snd_soc_dapm_sys_add(&rtd->dev);
1556 if (ret < 0)
1557 dev_err(codec->dev,
1558 "asoc: failed to add codec dapm sysfs entries: %d\n",
1559 ret);
1560
1561 /* add codec sysfs entries */
1562 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1563 if (ret < 0)
1564 dev_err(codec->dev,
1565 "asoc: failed to add codec sysfs files: %d\n", ret);
1566
1567 return 0;
1568}
1569
f0fba2ad
LG		 1570static int soc_probe_dai_link(struct snd_soc_card *card, int num)
1571{
1572 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1573 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1574 struct snd_soc_codec *codec = rtd->codec;
1575 struct snd_soc_platform *platform = rtd->platform;
1576 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1577 int ret;
1578
1579 dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
1580
1581 /* config components */
1582 codec_dai->codec = codec;
f0fba2ad 1583 cpu_dai->platform = platform;
f0fba2ad
LG		 1584 codec_dai->card = card;
1585 cpu_dai->card = card;
1586
1587 /* set default power off timeout */
1588 rtd->pmdown_time = pmdown_time;
1589
1590 /* probe the cpu_dai */
1591 if (!cpu_dai->probed) {
1592 if (cpu_dai->driver->probe) {
1593 ret = cpu_dai->driver->probe(cpu_dai);
1594 if (ret < 0) {
1595 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1596 cpu_dai->name);
1597 return ret;
1598 }
1599 }
1600 cpu_dai->probed = 1;
1601 /* mark cpu_dai as probed and add to card cpu_dai list */
1602 list_add(&cpu_dai->card_list, &card->dai_dev_list);
db2a4165
FM		 1603 }
1604
f0fba2ad
LG		 1605 /* probe the CODEC */
1606 if (!codec->probed) {
589c3563
JN		 1607 ret = soc_probe_codec(card, codec);
1608 if (ret < 0)
1609 return ret;
db2a4165
FM		 1610 }
1611
f0fba2ad
LG		 1612 /* probe the platform */
1613 if (!platform->probed) {
70d29331
JN		 1614 if (!try_module_get(platform->dev->driver->owner))
1615 return -ENODEV;
1616
f0fba2ad
LG		 1617 if (platform->driver->probe) {
1618 ret = platform->driver->probe(platform);
1619 if (ret < 0) {
1620 printk(KERN_ERR "asoc: failed to probe platform %s\n",
1621 platform->name);
70d29331 1622 module_put(platform->dev->driver->owner);
f0fba2ad
LG		 1623 return ret;
1624 }
1625 }
1626 /* mark platform as probed and add to card platform list */
1627 platform->probed = 1;
1628 list_add(&platform->card_list, &card->platform_dev_list);
1629 }
6ed25978 1630
f0fba2ad
LG		 1631 /* probe the CODEC DAI */
1632 if (!codec_dai->probed) {
1633 if (codec_dai->driver->probe) {
1634 ret = codec_dai->driver->probe(codec_dai);
fe3e78e0 1635 if (ret < 0) {
f0fba2ad
LG		 1636 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1637 codec_dai->name);
1638 return ret;
fe3e78e0
MB		 1639 }
1640 }
f0fba2ad
LG		 1641
1642 /* mark cpu_dai as probed and add to card cpu_dai list */
1643 codec_dai->probed = 1;
1644 list_add(&codec_dai->card_list, &card->dai_dev_list);
fe3e78e0
MB		 1645 }
1646
f0fba2ad
LG		 1647 /* DAPM dai link stream work */
1648 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
1649
589c3563
JN		 1650 ret = soc_post_component_init(card, codec, num, 0);
1651 if (ret)
f0fba2ad 1652 return ret;
fe3e78e0 1653
f0fba2ad
LG		 1654 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1655 if (ret < 0)
1656 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1657
f0fba2ad
LG		 1658 /* create the pcm */
1659 ret = soc_new_pcm(rtd, num);
1660 if (ret < 0) {
1661 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1662 return ret;
1663 }
1664
1665 /* add platform data for AC97 devices */
1666 if (rtd->codec_dai->driver->ac97_control)
1667 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1668
1669 return 0;
1670}
1671
fe3e78e0 1672#ifdef CONFIG_SND_SOC_AC97_BUS
f0fba2ad
LG		 1673static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1674{
1675 int ret;
1676
fe3e78e0
MB		 1677 /* Only instantiate AC97 if not already done by the adaptor
1678 * for the generic AC97 subsystem.
1679 */
f0fba2ad 1680 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
0562f788
MW		 1681 /*
1682 * It is possible that the AC97 device is already registered to
1683 * the device subsystem. This happens when the device is created
1684 * via snd_ac97_mixer(). Currently only SoC codec that does so
1685 * is the generic AC97 glue but others migh emerge.
1686 *
1687 * In those cases we don't try to register the device again.
1688 */
1689 if (!rtd->codec->ac97_created)
1690 return 0;
f0fba2ad
LG		 1691
1692 ret = soc_ac97_dev_register(rtd->codec);
fe3e78e0
MB		 1693 if (ret < 0) {
1694 printk(KERN_ERR "asoc: AC97 device register failed\n");
f0fba2ad 1695 return ret;
fe3e78e0 1696 }
f0fba2ad
LG		 1697
1698 rtd->codec->ac97_registered = 1;
fe3e78e0 1699 }
f0fba2ad
LG		 1700 return 0;
1701}
1702
1703static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1704{
1705 if (codec->ac97_registered) {
1706 soc_ac97_dev_unregister(codec);
1707 codec->ac97_registered = 0;
1708 }
1709}
fe3e78e0
MB		 1710#endif
1711
2eea392d
JN		 1712static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1713{
1714 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
2eea392d 1715 struct snd_soc_codec *codec;
676ad98a 1716 int ret = -ENODEV;
2eea392d
JN		 1717
1718 /* find CODEC from registered CODECs*/
1719 list_for_each_entry(codec, &codec_list, list) {
1720 if (!strcmp(codec->name, aux_dev->codec_name)) {
1721 if (codec->probed) {
1722 dev_err(codec->dev,
1723 "asoc: codec already probed");
1724 ret = -EBUSY;
1725 goto out;
1726 }
676ad98a 1727 goto found;
2eea392d
JN		 1728 }
1729 }
676ad98a
JN		 1730 /* codec not found */
1731 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1732 goto out;
2eea392d 1733
676ad98a 1734found:
589c3563 1735 ret = soc_probe_codec(card, codec);
2eea392d 1736 if (ret < 0)
589c3563 1737 return ret;
2eea392d 1738
589c3563 1739 ret = soc_post_component_init(card, codec, num, 1);
2eea392d
JN		 1740
1741out:
1742 return ret;
1743}
1744
1745static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1746{
1747 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1748 struct snd_soc_codec *codec = rtd->codec;
2eea392d
JN		 1749
1750 /* unregister the rtd device */
1751 if (rtd->dev_registered) {
589c3563 1752 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
2eea392d
JN		 1753 device_unregister(&rtd->dev);
1754 rtd->dev_registered = 0;
1755 }
1756
589c3563
JN		 1757 if (codec && codec->probed)
1758 soc_remove_codec(codec);
2eea392d
JN		 1759}
1760
fdf0f54d
DP		 1761static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1762 enum snd_soc_compress_type compress_type)
1763{
1764 int ret;
1765
1766 if (codec->cache_init)
1767 return 0;
1768
1769 /* override the compress_type if necessary */
1770 if (compress_type && codec->compress_type != compress_type)
1771 codec->compress_type = compress_type;
fdf0f54d
DP		 1772 ret = snd_soc_cache_init(codec);
1773 if (ret < 0) {
1774 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1775 ret);
1776 return ret;
1777 }
1778 codec->cache_init = 1;
1779 return 0;
1780}
1781
f0fba2ad
LG		 1782static void snd_soc_instantiate_card(struct snd_soc_card *card)
1783{
fdf0f54d
DP		 1784 struct snd_soc_codec *codec;
1785 struct snd_soc_codec_conf *codec_conf;
1786 enum snd_soc_compress_type compress_type;
f0fba2ad 1787 int ret, i;
fe3e78e0 1788
f0fba2ad 1789 mutex_lock(&card->mutex);
dbe21408 1790
f0fba2ad
LG		 1791 if (card->instantiated) {
1792 mutex_unlock(&card->mutex);
1793 return;
1794 }
fe3e78e0 1795
f0fba2ad
LG		 1796 /* bind DAIs */
1797 for (i = 0; i < card->num_links; i++)
1798 soc_bind_dai_link(card, i);
fe3e78e0 1799
f0fba2ad
LG		 1800 /* bind completed ? */
1801 if (card->num_rtd != card->num_links) {
1802 mutex_unlock(&card->mutex);
1803 return;
1804 }
435c5e25 1805
fdf0f54d
DP		 1806 /* initialize the register cache for each available codec */
1807 list_for_each_entry(codec, &codec_list, list) {
1808 if (codec->cache_init)
1809 continue;
861f2faf
DP		 1810 /* by default we don't override the compress_type */
1811 compress_type = 0;
fdf0f54d
DP		 1812 /* check to see if we need to override the compress_type */
1813 for (i = 0; i < card->num_configs; ++i) {
1814 codec_conf = &card->codec_conf[i];
1815 if (!strcmp(codec->name, codec_conf->dev_name)) {
1816 compress_type = codec_conf->compress_type;
1817 if (compress_type && compress_type
1818 != codec->compress_type)
1819 break;
1820 }
1821 }
fdf0f54d
DP		 1822 ret = snd_soc_init_codec_cache(codec, compress_type);
1823 if (ret < 0) {
1824 mutex_unlock(&card->mutex);
1825 return;
1826 }
1827 }
1828
f0fba2ad
LG		 1829 /* card bind complete so register a sound card */
1830 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1831 card->owner, 0, &card->snd_card);
1832 if (ret < 0) {
1833 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1834 card->name);
1835 mutex_unlock(&card->mutex);
1836 return;
1837 }
1838 card->snd_card->dev = card->dev;
1839
88ee1c61 1840#ifdef CONFIG_PM_SLEEP
f0fba2ad
LG		 1841 /* deferred resume work */
1842 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1843#endif
db2a4165 1844
f0fba2ad
LG		 1845 /* initialise the sound card only once */
1846 if (card->probe) {
e7361ec4 1847 ret = card->probe(card);
f0fba2ad
LG		 1848 if (ret < 0)
1849 goto card_probe_error;
1850 }
fe3e78e0 1851
f0fba2ad
LG		 1852 for (i = 0; i < card->num_links; i++) {
1853 ret = soc_probe_dai_link(card, i);
1854 if (ret < 0) {
321de0d0
MB		 1855 pr_err("asoc: failed to instantiate card %s: %d\n",
1856 card->name, ret);
f0fba2ad
LG		 1857 goto probe_dai_err;
1858 }
1859 }
db2a4165 1860
2eea392d
JN		 1861 for (i = 0; i < card->num_aux_devs; i++) {
1862 ret = soc_probe_aux_dev(card, i);
1863 if (ret < 0) {
1864 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1865 card->name, ret);
1866 goto probe_aux_dev_err;
1867 }
1868 }
1869
f0fba2ad
LG		 1870 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1871 "%s", card->name);
1872 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1873 "%s", card->name);
1874
1875 ret = snd_card_register(card->snd_card);
1876 if (ret < 0) {
1877 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
6b3ed785 1878 goto probe_aux_dev_err;
db2a4165
FM		 1879 }
1880
f0fba2ad
LG		 1881#ifdef CONFIG_SND_SOC_AC97_BUS
1882 /* register any AC97 codecs */
1883 for (i = 0; i < card->num_rtd; i++) {
6b3ed785
AL		 1884 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1885 if (ret < 0) {
1886 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1887 while (--i >= 0)
7d8316df 1888 soc_unregister_ac97_dai_link(card->rtd[i].codec);
6b3ed785 1889 goto probe_aux_dev_err;
f0fba2ad 1890 }
6b3ed785 1891 }
f0fba2ad
LG		 1892#endif
1893
1894 card->instantiated = 1;
1895 mutex_unlock(&card->mutex);
1896 return;
1897
2eea392d
JN		 1898probe_aux_dev_err:
1899 for (i = 0; i < card->num_aux_devs; i++)
1900 soc_remove_aux_dev(card, i);
1901
f0fba2ad
LG		 1902probe_dai_err:
1903 for (i = 0; i < card->num_links; i++)
1904 soc_remove_dai_link(card, i);
1905
1906card_probe_error:
87506549 1907 if (card->remove)
e7361ec4 1908 card->remove(card);
f0fba2ad
LG		 1909
1910 snd_card_free(card->snd_card);
1911
1912 mutex_unlock(&card->mutex);
435c5e25 1913}
db2a4165 1914
435c5e25 1915/*
421f91d2 1916 * Attempt to initialise any uninitialised cards. Must be called with
435c5e25
MB		 1917 * client_mutex.
1918 */
1919static void snd_soc_instantiate_cards(void)
1920{
1921 struct snd_soc_card *card;
1922 list_for_each_entry(card, &card_list, list)
1923 snd_soc_instantiate_card(card);
1924}
1925
1926/* probes a new socdev */
1927static int soc_probe(struct platform_device *pdev)
1928{
f0fba2ad 1929 struct snd_soc_card *card = platform_get_drvdata(pdev);
435c5e25 1930 int ret = 0;
435c5e25 1931
70a7ca34
VK		 1932 /*
1933 * no card, so machine driver should be registering card
1934 * we should not be here in that case so ret error
1935 */
1936 if (!card)
1937 return -EINVAL;
1938
435c5e25
MB		 1939 /* Bodge while we unpick instantiation */
1940 card->dev = &pdev->dev;
f0fba2ad 1941
435c5e25
MB		 1942 ret = snd_soc_register_card(card);
1943 if (ret != 0) {
1944 dev_err(&pdev->dev, "Failed to register card\n");
1945 return ret;
1946 }
1947
1948 return 0;
db2a4165
FM		 1949}
1950
b0e26485 1951static int soc_cleanup_card_resources(struct snd_soc_card *card)
db2a4165
FM		 1952{
1953 int i;
db2a4165 1954
b0e26485
VK		 1955 /* make sure any delayed work runs */
1956 for (i = 0; i < card->num_rtd; i++) {
1957 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1958 flush_delayed_work_sync(&rtd->delayed_work);
1959 }
914dc182 1960
b0e26485
VK		 1961 /* remove auxiliary devices */
1962 for (i = 0; i < card->num_aux_devs; i++)
1963 soc_remove_aux_dev(card, i);
db2a4165 1964
b0e26485
VK		 1965 /* remove and free each DAI */
1966 for (i = 0; i < card->num_rtd; i++)
1967 soc_remove_dai_link(card, i);
2eea392d 1968
b0e26485 1969 soc_cleanup_card_debugfs(card);
f0fba2ad 1970
b0e26485
VK		 1971 /* remove the card */
1972 if (card->remove)
e7361ec4 1973 card->remove(card);
a6052154 1974
b0e26485
VK		 1975 kfree(card->rtd);
1976 snd_card_free(card->snd_card);
1977 return 0;
1978
1979}
1980
1981/* removes a socdev */
1982static int soc_remove(struct platform_device *pdev)
1983{
1984 struct snd_soc_card *card = platform_get_drvdata(pdev);
db2a4165 1985
c5af3a2e 1986 snd_soc_unregister_card(card);
db2a4165
FM		 1987 return 0;
1988}
1989
6f8ab4ac 1990int snd_soc_poweroff(struct device *dev)
51737470 1991{
6f8ab4ac 1992 struct snd_soc_card *card = dev_get_drvdata(dev);
f0fba2ad 1993 int i;
51737470
MB		 1994
1995 if (!card->instantiated)
416356fc 1996 return 0;
51737470
MB		 1997
1998 /* Flush out pmdown_time work - we actually do want to run it
1999 * now, we're shutting down so no imminent restart. */
f0fba2ad
LG		 2000 for (i = 0; i < card->num_rtd; i++) {
2001 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
5b84ba26 2002 flush_delayed_work_sync(&rtd->delayed_work);
f0fba2ad 2003 }
51737470 2004
f0fba2ad 2005 snd_soc_dapm_shutdown(card);
416356fc
MB		 2006
2007 return 0;
51737470 2008}
6f8ab4ac 2009EXPORT_SYMBOL_GPL(snd_soc_poweroff);
51737470 2010
6f8ab4ac
MB		 2011const struct dev_pm_ops snd_soc_pm_ops = {
2012 .suspend = snd_soc_suspend,
2013 .resume = snd_soc_resume,
2014 .poweroff = snd_soc_poweroff,
416356fc
MB		 2015};
2016
db2a4165
FM		 2017/* ASoC platform driver */
2018static struct platform_driver soc_driver = {
2019 .driver = {
2020 .name = "soc-audio",
8b45a209 2021 .owner = THIS_MODULE,
6f8ab4ac 2022 .pm = &snd_soc_pm_ops,
db2a4165
FM		 2023 },
2024 .probe = soc_probe,
2025 .remove = soc_remove,
db2a4165
FM		 2026};
2027
2028/* create a new pcm */
f0fba2ad
LG		 2029static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2030{
2031 struct snd_soc_codec *codec = rtd->codec;
2032 struct snd_soc_platform *platform = rtd->platform;
2033 struct snd_soc_dai *codec_dai = rtd->codec_dai;
2034 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
db2a4165
FM		 2035 struct snd_pcm *pcm;
2036 char new_name[64];
2037 int ret = 0, playback = 0, capture = 0;
2038
db2a4165 2039 /* check client and interface hw capabilities */
40ca1142 2040 snprintf(new_name, sizeof(new_name), "%s %s-%d",
f0fba2ad 2041 rtd->dai_link->stream_name, codec_dai->name, num);
db2a4165 2042
f0fba2ad 2043 if (codec_dai->driver->playback.channels_min)
db2a4165 2044 playback = 1;
f0fba2ad 2045 if (codec_dai->driver->capture.channels_min)
db2a4165
FM		 2046 capture = 1;
2047
f0fba2ad
LG		 2048 dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
2049 ret = snd_pcm_new(rtd->card->snd_card, new_name,
2050 num, playback, capture, &pcm);
db2a4165 2051 if (ret < 0) {
f0fba2ad 2052 printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
db2a4165
FM		 2053 return ret;
2054 }
2055
f0fba2ad 2056 rtd->pcm = pcm;
db2a4165 2057 pcm->private_data = rtd;
f0fba2ad
LG		 2058 soc_pcm_ops.mmap = platform->driver->ops->mmap;
2059 soc_pcm_ops.pointer = platform->driver->ops->pointer;
2060 soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
2061 soc_pcm_ops.copy = platform->driver->ops->copy;
2062 soc_pcm_ops.silence = platform->driver->ops->silence;
2063 soc_pcm_ops.ack = platform->driver->ops->ack;
2064 soc_pcm_ops.page = platform->driver->ops->page;
db2a4165
FM		 2065
2066 if (playback)
2067 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
2068
2069 if (capture)
2070 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
2071
f0fba2ad 2072 ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
db2a4165
FM		 2073 if (ret < 0) {
2074 printk(KERN_ERR "asoc: platform pcm constructor failed\n");
db2a4165
FM		 2075 return ret;
2076 }
2077
f0fba2ad 2078 pcm->private_free = platform->driver->pcm_free;
db2a4165
FM		 2079 printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
2080 cpu_dai->name);
2081 return ret;
2082}
2083
096e49d5
MB		 2084/**
2085 * snd_soc_codec_volatile_register: Report if a register is volatile.
2086 *
2087 * @codec: CODEC to query.
2088 * @reg: Register to query.
2089 *
2090 * Boolean function indiciating if a CODEC register is volatile.
2091 */
181e055e
MB		 2092int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
2093 unsigned int reg)
096e49d5 2094{
1500b7b5
DP		 2095 if (codec->volatile_register)
2096 return codec->volatile_register(codec, reg);
096e49d5
MB		 2097 else
2098 return 0;
2099}
2100EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
2101
db2a4165
FM		 2102/**
2103 * snd_soc_new_ac97_codec - initailise AC97 device
2104 * @codec: audio codec
2105 * @ops: AC97 bus operations
2106 * @num: AC97 codec number
2107 *
2108 * Initialises AC97 codec resources for use by ad-hoc devices only.
2109 */
2110int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2111 struct snd_ac97_bus_ops *ops, int num)
2112{
2113 mutex_lock(&codec->mutex);
2114
2115 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2116 if (codec->ac97 == NULL) {
2117 mutex_unlock(&codec->mutex);
2118 return -ENOMEM;
2119 }
2120
2121 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2122 if (codec->ac97->bus == NULL) {
2123 kfree(codec->ac97);
2124 codec->ac97 = NULL;
2125 mutex_unlock(&codec->mutex);
2126 return -ENOMEM;
2127 }
2128
2129 codec->ac97->bus->ops = ops;
2130 codec->ac97->num = num;
0562f788
MW		 2131
2132 /*
2133 * Mark the AC97 device to be created by us. This way we ensure that the
2134 * device will be registered with the device subsystem later on.
2135 */
2136 codec->ac97_created = 1;
2137
db2a4165
FM		 2138 mutex_unlock(&codec->mutex);
2139 return 0;
2140}
2141EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2142
2143/**
2144 * snd_soc_free_ac97_codec - free AC97 codec device
2145 * @codec: audio codec
2146 *
2147 * Frees AC97 codec device resources.
2148 */
2149void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2150{
2151 mutex_lock(&codec->mutex);
f0fba2ad
LG		 2152#ifdef CONFIG_SND_SOC_AC97_BUS
2153 soc_unregister_ac97_dai_link(codec);
2154#endif
db2a4165
FM		 2155 kfree(codec->ac97->bus);
2156 kfree(codec->ac97);
2157 codec->ac97 = NULL;
0562f788 2158 codec->ac97_created = 0;
db2a4165
FM		 2159 mutex_unlock(&codec->mutex);
2160}
2161EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2162
c3753707
MB		 2163unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2164{
2165 unsigned int ret;
2166
c3acec26 2167 ret = codec->read(codec, reg);
c3753707 2168 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
a8b1d34f 2169 trace_snd_soc_reg_read(codec, reg, ret);
c3753707
MB		 2170
2171 return ret;
2172}
2173EXPORT_SYMBOL_GPL(snd_soc_read);
2174
2175unsigned int snd_soc_write(struct snd_soc_codec *codec,
2176 unsigned int reg, unsigned int val)
2177{
2178 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
a8b1d34f 2179 trace_snd_soc_reg_write(codec, reg, val);
c3acec26 2180 return codec->write(codec, reg, val);
c3753707
MB		 2181}
2182EXPORT_SYMBOL_GPL(snd_soc_write);
2183
db2a4165
FM		 2184/**
2185 * snd_soc_update_bits - update codec register bits
2186 * @codec: audio codec
2187 * @reg: codec register
2188 * @mask: register mask
2189 * @value: new value
2190 *
2191 * Writes new register value.
2192 *
180c329d 2193 * Returns 1 for change, 0 for no change, or negative error code.
db2a4165
FM		 2194 */
2195int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 2196 unsigned int mask, unsigned int value)
db2a4165
FM		 2197{
2198 int change;
46f5822f 2199 unsigned int old, new;
180c329d
TT		 2200 int ret;
2201
2202 ret = snd_soc_read(codec, reg);
2203 if (ret < 0)
2204 return ret;
db2a4165 2205
180c329d 2206 old = ret;
db2a4165
FM		 2207 new = (old & ~mask) | value;
2208 change = old != new;
180c329d
TT		 2209 if (change) {
2210 ret = snd_soc_write(codec, reg, new);
2211 if (ret < 0)
2212 return ret;
2213 }
db2a4165 2214
db2a4165
FM		 2215 return change;
2216}
2217EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2218
6c508c62
EN		 2219/**
2220 * snd_soc_update_bits_locked - update codec register bits
2221 * @codec: audio codec
2222 * @reg: codec register
2223 * @mask: register mask
2224 * @value: new value
2225 *
2226 * Writes new register value, and takes the codec mutex.
2227 *
2228 * Returns 1 for change else 0.
2229 */
dd1b3d53
MB		 2230int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2231 unsigned short reg, unsigned int mask,
2232 unsigned int value)
6c508c62
EN		 2233{
2234 int change;
2235
2236 mutex_lock(&codec->mutex);
2237 change = snd_soc_update_bits(codec, reg, mask, value);
2238 mutex_unlock(&codec->mutex);
2239
2240 return change;
2241}
dd1b3d53 2242EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
6c508c62 2243
db2a4165
FM		 2244/**
2245 * snd_soc_test_bits - test register for change
2246 * @codec: audio codec
2247 * @reg: codec register
2248 * @mask: register mask
2249 * @value: new value
2250 *
2251 * Tests a register with a new value and checks if the new value is
2252 * different from the old value.
2253 *
2254 * Returns 1 for change else 0.
2255 */
2256int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 2257 unsigned int mask, unsigned int value)
db2a4165
FM		 2258{
2259 int change;
46f5822f 2260 unsigned int old, new;
db2a4165 2261
db2a4165
FM		 2262 old = snd_soc_read(codec, reg);
2263 new = (old & ~mask) | value;
2264 change = old != new;
db2a4165
FM		 2265
2266 return change;
2267}
2268EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2269
db2a4165
FM		 2270/**
2271 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2272 * @substream: the pcm substream
2273 * @hw: the hardware parameters
2274 *
2275 * Sets the substream runtime hardware parameters.
2276 */
2277int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2278 const struct snd_pcm_hardware *hw)
2279{
2280 struct snd_pcm_runtime *runtime = substream->runtime;
2281 runtime->hw.info = hw->info;
2282 runtime->hw.formats = hw->formats;
2283 runtime->hw.period_bytes_min = hw->period_bytes_min;
2284 runtime->hw.period_bytes_max = hw->period_bytes_max;
2285 runtime->hw.periods_min = hw->periods_min;
2286 runtime->hw.periods_max = hw->periods_max;
2287 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2288 runtime->hw.fifo_size = hw->fifo_size;
2289 return 0;
2290}
2291EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2292
2293/**
2294 * snd_soc_cnew - create new control
2295 * @_template: control template
2296 * @data: control private data
ac11a2b3 2297 * @long_name: control long name
db2a4165
FM		 2298 *
2299 * Create a new mixer control from a template control.
2300 *
2301 * Returns 0 for success, else error.
2302 */
2303struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2304 void *data, char *long_name)
2305{
2306 struct snd_kcontrol_new template;
2307
2308 memcpy(&template, _template, sizeof(template));
2309 if (long_name)
2310 template.name = long_name;
db2a4165
FM		 2311 template.index = 0;
2312
2313 return snd_ctl_new1(&template, data);
2314}
2315EXPORT_SYMBOL_GPL(snd_soc_cnew);
2316
3e8e1952
IM		 2317/**
2318 * snd_soc_add_controls - add an array of controls to a codec.
2319 * Convienience function to add a list of controls. Many codecs were
2320 * duplicating this code.
2321 *
2322 * @codec: codec to add controls to
2323 * @controls: array of controls to add
2324 * @num_controls: number of elements in the array
2325 *
2326 * Return 0 for success, else error.
2327 */
2328int snd_soc_add_controls(struct snd_soc_codec *codec,
2329 const struct snd_kcontrol_new *controls, int num_controls)
2330{
f0fba2ad 2331 struct snd_card *card = codec->card->snd_card;
ead9b919 2332 char prefixed_name[44], *name;
3e8e1952
IM		 2333 int err, i;
2334
2335 for (i = 0; i < num_controls; i++) {
2336 const struct snd_kcontrol_new *control = &controls[i];
ead9b919
JN		 2337 if (codec->name_prefix) {
2338 snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
2339 codec->name_prefix, control->name);
2340 name = prefixed_name;
2341 } else {
2342 name = control->name;
2343 }
2344 err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
3e8e1952 2345 if (err < 0) {
082100dc 2346 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
ead9b919 2347 codec->name, name, err);
3e8e1952
IM		 2348 return err;
2349 }
2350 }
2351
2352 return 0;
2353}
2354EXPORT_SYMBOL_GPL(snd_soc_add_controls);
2355
db2a4165
FM		 2356/**
2357 * snd_soc_info_enum_double - enumerated double mixer info callback
2358 * @kcontrol: mixer control
2359 * @uinfo: control element information
2360 *
2361 * Callback to provide information about a double enumerated
2362 * mixer control.
2363 *
2364 * Returns 0 for success.
2365 */
2366int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2367 struct snd_ctl_elem_info *uinfo)
2368{
2369 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2370
2371 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2372 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
f8ba0b7b 2373 uinfo->value.enumerated.items = e->max;
db2a4165 2374
f8ba0b7b
JS		 2375 if (uinfo->value.enumerated.item > e->max - 1)
2376 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 2377 strcpy(uinfo->value.enumerated.name,
2378 e->texts[uinfo->value.enumerated.item]);
2379 return 0;
2380}
2381EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2382
2383/**
2384 * snd_soc_get_enum_double - enumerated double mixer get callback
2385 * @kcontrol: mixer control
ac11a2b3 2386 * @ucontrol: control element information
db2a4165
FM		 2387 *
2388 * Callback to get the value of a double enumerated mixer.
2389 *
2390 * Returns 0 for success.
2391 */
2392int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2393 struct snd_ctl_elem_value *ucontrol)
2394{
2395 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2396 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2397 unsigned int val, bitmask;
db2a4165 2398
f8ba0b7b 2399 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165
FM		 2400 ;
2401 val = snd_soc_read(codec, e->reg);
3ff3f64b
MB		 2402 ucontrol->value.enumerated.item[0]
2403 = (val >> e->shift_l) & (bitmask - 1);
db2a4165
FM		 2404 if (e->shift_l != e->shift_r)
2405 ucontrol->value.enumerated.item[1] =
2406 (val >> e->shift_r) & (bitmask - 1);
2407
2408 return 0;
2409}
2410EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2411
2412/**
2413 * snd_soc_put_enum_double - enumerated double mixer put callback
2414 * @kcontrol: mixer control
ac11a2b3 2415 * @ucontrol: control element information
db2a4165
FM		 2416 *
2417 * Callback to set the value of a double enumerated mixer.
2418 *
2419 * Returns 0 for success.
2420 */
2421int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2422 struct snd_ctl_elem_value *ucontrol)
2423{
2424 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2425 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2426 unsigned int val;
2427 unsigned int mask, bitmask;
db2a4165 2428
f8ba0b7b 2429 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165 2430 ;
f8ba0b7b 2431 if (ucontrol->value.enumerated.item[0] > e->max - 1)
db2a4165
FM		 2432 return -EINVAL;
2433 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2434 mask = (bitmask - 1) << e->shift_l;
2435 if (e->shift_l != e->shift_r) {
f8ba0b7b 2436 if (ucontrol->value.enumerated.item[1] > e->max - 1)
db2a4165
FM		 2437 return -EINVAL;
2438 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2439 mask |= (bitmask - 1) << e->shift_r;
2440 }
2441
6c508c62 2442 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
db2a4165
FM		 2443}
2444EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2445
2e72f8e3
PU		 2446/**
2447 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2448 * @kcontrol: mixer control
2449 * @ucontrol: control element information
2450 *
2451 * Callback to get the value of a double semi enumerated mixer.
2452 *
2453 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2454 * used for handling bitfield coded enumeration for example.
2455 *
2456 * Returns 0 for success.
2457 */
2458int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2459 struct snd_ctl_elem_value *ucontrol)
2460{
2461 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2462 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2463 unsigned int reg_val, val, mux;
2e72f8e3
PU		 2464
2465 reg_val = snd_soc_read(codec, e->reg);
2466 val = (reg_val >> e->shift_l) & e->mask;
2467 for (mux = 0; mux < e->max; mux++) {
2468 if (val == e->values[mux])
2469 break;
2470 }
2471 ucontrol->value.enumerated.item[0] = mux;
2472 if (e->shift_l != e->shift_r) {
2473 val = (reg_val >> e->shift_r) & e->mask;
2474 for (mux = 0; mux < e->max; mux++) {
2475 if (val == e->values[mux])
2476 break;
2477 }
2478 ucontrol->value.enumerated.item[1] = mux;
2479 }
2480
2481 return 0;
2482}
2483EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2484
2485/**
2486 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2487 * @kcontrol: mixer control
2488 * @ucontrol: control element information
2489 *
2490 * Callback to set the value of a double semi enumerated mixer.
2491 *
2492 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2493 * used for handling bitfield coded enumeration for example.
2494 *
2495 * Returns 0 for success.
2496 */
2497int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2498 struct snd_ctl_elem_value *ucontrol)
2499{
2500 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2501 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2502 unsigned int val;
2503 unsigned int mask;
2e72f8e3
PU		 2504
2505 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2506 return -EINVAL;
2507 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2508 mask = e->mask << e->shift_l;
2509 if (e->shift_l != e->shift_r) {
2510 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2511 return -EINVAL;
2512 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2513 mask |= e->mask << e->shift_r;
2514 }
2515
6c508c62 2516 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2e72f8e3
PU		 2517}
2518EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2519
db2a4165
FM		 2520/**
2521 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2522 * @kcontrol: mixer control
2523 * @uinfo: control element information
2524 *
2525 * Callback to provide information about an external enumerated
2526 * single mixer.
2527 *
2528 * Returns 0 for success.
2529 */
2530int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2531 struct snd_ctl_elem_info *uinfo)
2532{
2533 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2534
2535 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2536 uinfo->count = 1;
f8ba0b7b 2537 uinfo->value.enumerated.items = e->max;
db2a4165 2538
f8ba0b7b
JS		 2539 if (uinfo->value.enumerated.item > e->max - 1)
2540 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 2541 strcpy(uinfo->value.enumerated.name,
2542 e->texts[uinfo->value.enumerated.item]);
2543 return 0;
2544}
2545EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2546
2547/**
2548 * snd_soc_info_volsw_ext - external single mixer info callback
2549 * @kcontrol: mixer control
2550 * @uinfo: control element information
2551 *
2552 * Callback to provide information about a single external mixer control.
2553 *
2554 * Returns 0 for success.
2555 */
2556int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2557 struct snd_ctl_elem_info *uinfo)
2558{
a7a4ac86
PZ		 2559 int max = kcontrol->private_value;
2560
fd5dfad9 2561 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2562 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2563 else
2564 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2565
db2a4165
FM		 2566 uinfo->count = 1;
2567 uinfo->value.integer.min = 0;
a7a4ac86 2568 uinfo->value.integer.max = max;
db2a4165
FM		 2569 return 0;
2570}
2571EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2572
db2a4165
FM		 2573/**
2574 * snd_soc_info_volsw - single mixer info callback
2575 * @kcontrol: mixer control
2576 * @uinfo: control element information
2577 *
2578 * Callback to provide information about a single mixer control.
2579 *
2580 * Returns 0 for success.
2581 */
2582int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2583 struct snd_ctl_elem_info *uinfo)
2584{
4eaa9819
JS		 2585 struct soc_mixer_control *mc =
2586 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2587 int platform_max;
762b8df7 2588 unsigned int shift = mc->shift;
815ecf8d 2589 unsigned int rshift = mc->rshift;
db2a4165 2590
d11bb4a9
PU		 2591 if (!mc->platform_max)
2592 mc->platform_max = mc->max;
2593 platform_max = mc->platform_max;
2594
2595 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2596 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2597 else
2598 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2599
db2a4165
FM		 2600 uinfo->count = shift == rshift ? 1 : 2;
2601 uinfo->value.integer.min = 0;
d11bb4a9 2602 uinfo->value.integer.max = platform_max;
db2a4165
FM		 2603 return 0;
2604}
2605EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2606
2607/**
2608 * snd_soc_get_volsw - single mixer get callback
2609 * @kcontrol: mixer control
ac11a2b3 2610 * @ucontrol: control element information
db2a4165
FM		 2611 *
2612 * Callback to get the value of a single mixer control.
2613 *
2614 * Returns 0 for success.
2615 */
2616int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2617 struct snd_ctl_elem_value *ucontrol)
2618{
4eaa9819
JS		 2619 struct soc_mixer_control *mc =
2620 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2621 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2622 unsigned int reg = mc->reg;
2623 unsigned int shift = mc->shift;
2624 unsigned int rshift = mc->rshift;
4eaa9819 2625 int max = mc->max;
815ecf8d
JS		 2626 unsigned int mask = (1 << fls(max)) - 1;
2627 unsigned int invert = mc->invert;
db2a4165
FM		 2628
2629 ucontrol->value.integer.value[0] =
2630 (snd_soc_read(codec, reg) >> shift) & mask;
2631 if (shift != rshift)
2632 ucontrol->value.integer.value[1] =
2633 (snd_soc_read(codec, reg) >> rshift) & mask;
2634 if (invert) {
2635 ucontrol->value.integer.value[0] =
a7a4ac86 2636 max - ucontrol->value.integer.value[0];
db2a4165
FM		 2637 if (shift != rshift)
2638 ucontrol->value.integer.value[1] =
a7a4ac86 2639 max - ucontrol->value.integer.value[1];
db2a4165
FM		 2640 }
2641
2642 return 0;
2643}
2644EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2645
2646/**
2647 * snd_soc_put_volsw - single mixer put callback
2648 * @kcontrol: mixer control
ac11a2b3 2649 * @ucontrol: control element information
db2a4165
FM		 2650 *
2651 * Callback to set the value of a single mixer control.
2652 *
2653 * Returns 0 for success.
2654 */
2655int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2656 struct snd_ctl_elem_value *ucontrol)
2657{
4eaa9819
JS		 2658 struct soc_mixer_control *mc =
2659 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2660 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2661 unsigned int reg = mc->reg;
2662 unsigned int shift = mc->shift;
2663 unsigned int rshift = mc->rshift;
4eaa9819 2664 int max = mc->max;
815ecf8d
JS		 2665 unsigned int mask = (1 << fls(max)) - 1;
2666 unsigned int invert = mc->invert;
46f5822f 2667 unsigned int val, val2, val_mask;
db2a4165
FM		 2668
2669 val = (ucontrol->value.integer.value[0] & mask);
2670 if (invert)
a7a4ac86 2671 val = max - val;
db2a4165
FM		 2672 val_mask = mask << shift;
2673 val = val << shift;
2674 if (shift != rshift) {
2675 val2 = (ucontrol->value.integer.value[1] & mask);
2676 if (invert)
a7a4ac86 2677 val2 = max - val2;
db2a4165
FM		 2678 val_mask |= mask << rshift;
2679 val |= val2 << rshift;
2680 }
6c508c62 2681 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
db2a4165
FM		 2682}
2683EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2684
2685/**
2686 * snd_soc_info_volsw_2r - double mixer info callback
2687 * @kcontrol: mixer control
2688 * @uinfo: control element information
2689 *
2690 * Callback to provide information about a double mixer control that
2691 * spans 2 codec registers.
2692 *
2693 * Returns 0 for success.
2694 */
2695int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2696 struct snd_ctl_elem_info *uinfo)
2697{
4eaa9819
JS		 2698 struct soc_mixer_control *mc =
2699 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2700 int platform_max;
a7a4ac86 2701
d11bb4a9
PU		 2702 if (!mc->platform_max)
2703 mc->platform_max = mc->max;
2704 platform_max = mc->platform_max;
2705
2706 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2707 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2708 else
2709 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2710
db2a4165
FM		 2711 uinfo->count = 2;
2712 uinfo->value.integer.min = 0;
d11bb4a9 2713 uinfo->value.integer.max = platform_max;
db2a4165
FM		 2714 return 0;
2715}
2716EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2717
2718/**
2719 * snd_soc_get_volsw_2r - double mixer get callback
2720 * @kcontrol: mixer control
ac11a2b3 2721 * @ucontrol: control element information
db2a4165
FM		 2722 *
2723 * Callback to get the value of a double mixer control that spans 2 registers.
2724 *
2725 * Returns 0 for success.
2726 */
2727int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2728 struct snd_ctl_elem_value *ucontrol)
2729{
4eaa9819
JS		 2730 struct soc_mixer_control *mc =
2731 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2732 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2733 unsigned int reg = mc->reg;
2734 unsigned int reg2 = mc->rreg;
2735 unsigned int shift = mc->shift;
4eaa9819 2736 int max = mc->max;
46f5822f 2737 unsigned int mask = (1 << fls(max)) - 1;
815ecf8d 2738 unsigned int invert = mc->invert;
db2a4165
FM		 2739
2740 ucontrol->value.integer.value[0] =
2741 (snd_soc_read(codec, reg) >> shift) & mask;
2742 ucontrol->value.integer.value[1] =
2743 (snd_soc_read(codec, reg2) >> shift) & mask;
2744 if (invert) {
2745 ucontrol->value.integer.value[0] =
a7a4ac86 2746 max - ucontrol->value.integer.value[0];
db2a4165 2747 ucontrol->value.integer.value[1] =
a7a4ac86 2748 max - ucontrol->value.integer.value[1];
db2a4165
FM		 2749 }
2750
2751 return 0;
2752}
2753EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2754
2755/**
2756 * snd_soc_put_volsw_2r - double mixer set callback
2757 * @kcontrol: mixer control
ac11a2b3 2758 * @ucontrol: control element information
db2a4165
FM		 2759 *
2760 * Callback to set the value of a double mixer control that spans 2 registers.
2761 *
2762 * Returns 0 for success.
2763 */
2764int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2765 struct snd_ctl_elem_value *ucontrol)
2766{
4eaa9819
JS		 2767 struct soc_mixer_control *mc =
2768 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2769 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2770 unsigned int reg = mc->reg;
2771 unsigned int reg2 = mc->rreg;
2772 unsigned int shift = mc->shift;
4eaa9819 2773 int max = mc->max;
815ecf8d
JS		 2774 unsigned int mask = (1 << fls(max)) - 1;
2775 unsigned int invert = mc->invert;
db2a4165 2776 int err;
46f5822f 2777 unsigned int val, val2, val_mask;
db2a4165
FM		 2778
2779 val_mask = mask << shift;
2780 val = (ucontrol->value.integer.value[0] & mask);
2781 val2 = (ucontrol->value.integer.value[1] & mask);
2782
2783 if (invert) {
a7a4ac86
PZ		 2784 val = max - val;
2785 val2 = max - val2;
db2a4165
FM		 2786 }
2787
2788 val = val << shift;
2789 val2 = val2 << shift;
2790
6c508c62 2791 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3ff3f64b 2792 if (err < 0)
db2a4165
FM		 2793 return err;
2794
6c508c62 2795 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
db2a4165
FM		 2796 return err;
2797}
2798EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2799
e13ac2e9
MB		 2800/**
2801 * snd_soc_info_volsw_s8 - signed mixer info callback
2802 * @kcontrol: mixer control
2803 * @uinfo: control element information
2804 *
2805 * Callback to provide information about a signed mixer control.
2806 *
2807 * Returns 0 for success.
2808 */
2809int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2810 struct snd_ctl_elem_info *uinfo)
2811{
4eaa9819
JS		 2812 struct soc_mixer_control *mc =
2813 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2814 int platform_max;
4eaa9819 2815 int min = mc->min;
e13ac2e9 2816
d11bb4a9
PU		 2817 if (!mc->platform_max)
2818 mc->platform_max = mc->max;
2819 platform_max = mc->platform_max;
2820
e13ac2e9
MB		 2821 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2822 uinfo->count = 2;
2823 uinfo->value.integer.min = 0;
d11bb4a9 2824 uinfo->value.integer.max = platform_max - min;
e13ac2e9
MB		 2825 return 0;
2826}
2827EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2828
2829/**
2830 * snd_soc_get_volsw_s8 - signed mixer get callback
2831 * @kcontrol: mixer control
ac11a2b3 2832 * @ucontrol: control element information
e13ac2e9
MB		 2833 *
2834 * Callback to get the value of a signed mixer control.
2835 *
2836 * Returns 0 for success.
2837 */
2838int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2839 struct snd_ctl_elem_value *ucontrol)
2840{
4eaa9819
JS		 2841 struct soc_mixer_control *mc =
2842 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2843 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2844 unsigned int reg = mc->reg;
4eaa9819 2845 int min = mc->min;
e13ac2e9
MB		 2846 int val = snd_soc_read(codec, reg);
2847
2848 ucontrol->value.integer.value[0] =
2849 ((signed char)(val & 0xff))-min;
2850 ucontrol->value.integer.value[1] =
2851 ((signed char)((val >> 8) & 0xff))-min;
2852 return 0;
2853}
2854EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2855
2856/**
2857 * snd_soc_put_volsw_sgn - signed mixer put callback
2858 * @kcontrol: mixer control
ac11a2b3 2859 * @ucontrol: control element information
e13ac2e9
MB		 2860 *
2861 * Callback to set the value of a signed mixer control.
2862 *
2863 * Returns 0 for success.
2864 */
2865int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2866 struct snd_ctl_elem_value *ucontrol)
2867{
4eaa9819
JS		 2868 struct soc_mixer_control *mc =
2869 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2870 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2871 unsigned int reg = mc->reg;
4eaa9819 2872 int min = mc->min;
46f5822f 2873 unsigned int val;
e13ac2e9
MB		 2874
2875 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2876 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2877
6c508c62 2878 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
e13ac2e9
MB		 2879}
2880EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2881
637d3847
PU		 2882/**
2883 * snd_soc_limit_volume - Set new limit to an existing volume control.
2884 *
2885 * @codec: where to look for the control
2886 * @name: Name of the control
2887 * @max: new maximum limit
2888 *
2889 * Return 0 for success, else error.
2890 */
2891int snd_soc_limit_volume(struct snd_soc_codec *codec,
2892 const char *name, int max)
2893{
f0fba2ad 2894 struct snd_card *card = codec->card->snd_card;
637d3847
PU		 2895 struct snd_kcontrol *kctl;
2896 struct soc_mixer_control *mc;
2897 int found = 0;
2898 int ret = -EINVAL;
2899
2900 /* Sanity check for name and max */
2901 if (unlikely(!name || max <= 0))
2902 return -EINVAL;
2903
2904 list_for_each_entry(kctl, &card->controls, list) {
2905 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2906 found = 1;
2907 break;
2908 }
2909 }
2910 if (found) {
2911 mc = (struct soc_mixer_control *)kctl->private_value;
2912 if (max <= mc->max) {
d11bb4a9 2913 mc->platform_max = max;
637d3847
PU		 2914 ret = 0;
2915 }
2916 }
2917 return ret;
2918}
2919EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2920
b6f4bb38 2921/**
2922 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2923 * mixer info callback
2924 * @kcontrol: mixer control
2925 * @uinfo: control element information
2926 *
2927 * Returns 0 for success.
2928 */
2929int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2930 struct snd_ctl_elem_info *uinfo)
2931{
2932 struct soc_mixer_control *mc =
2933 (struct soc_mixer_control *)kcontrol->private_value;
2934 int max = mc->max;
2935 int min = mc->min;
2936
2937 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2938 uinfo->count = 2;
2939 uinfo->value.integer.min = 0;
2940 uinfo->value.integer.max = max-min;
2941
2942 return 0;
2943}
2944EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2945
2946/**
2947 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2948 * mixer get callback
2949 * @kcontrol: mixer control
2950 * @uinfo: control element information
2951 *
2952 * Returns 0 for success.
2953 */
2954int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2955 struct snd_ctl_elem_value *ucontrol)
2956{
2957 struct soc_mixer_control *mc =
2958 (struct soc_mixer_control *)kcontrol->private_value;
2959 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2960 unsigned int mask = (1<<mc->shift)-1;
2961 int min = mc->min;
2962 int val = snd_soc_read(codec, mc->reg) & mask;
2963 int valr = snd_soc_read(codec, mc->rreg) & mask;
2964
20630c7f
SL		 2965 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2966 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
b6f4bb38 2967 return 0;
2968}
2969EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2970
2971/**
2972 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2973 * mixer put callback
2974 * @kcontrol: mixer control
2975 * @uinfo: control element information
2976 *
2977 * Returns 0 for success.
2978 */
2979int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2980 struct snd_ctl_elem_value *ucontrol)
2981{
2982 struct soc_mixer_control *mc =
2983 (struct soc_mixer_control *)kcontrol->private_value;
2984 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2985 unsigned int mask = (1<<mc->shift)-1;
2986 int min = mc->min;
2987 int ret;
2988 unsigned int val, valr, oval, ovalr;
2989
2990 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2991 val &= mask;
2992 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2993 valr &= mask;
2994
2995 oval = snd_soc_read(codec, mc->reg) & mask;
2996 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2997
2998 ret = 0;
2999 if (oval != val) {
3000 ret = snd_soc_write(codec, mc->reg, val);
3001 if (ret < 0)
f1df5aec 3002 return ret;
b6f4bb38 3003 }
3004 if (ovalr != valr) {
3005 ret = snd_soc_write(codec, mc->rreg, valr);
3006 if (ret < 0)
f1df5aec 3007 return ret;
b6f4bb38 3008 }
3009
3010 return 0;
3011}
3012EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
3013
8c6529db
LG		 3014/**
3015 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3016 * @dai: DAI
3017 * @clk_id: DAI specific clock ID
3018 * @freq: new clock frequency in Hz
3019 * @dir: new clock direction - input/output.
3020 *
3021 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3022 */
3023int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3024 unsigned int freq, int dir)
3025{
f0fba2ad
LG		 3026 if (dai->driver && dai->driver->ops->set_sysclk)
3027 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
8c6529db
LG		 3028 else
3029 return -EINVAL;
3030}
3031EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3032
3033/**
3034 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3035 * @dai: DAI
ac11a2b3 3036 * @div_id: DAI specific clock divider ID
8c6529db
LG		 3037 * @div: new clock divisor.
3038 *
3039 * Configures the clock dividers. This is used to derive the best DAI bit and
3040 * frame clocks from the system or master clock. It's best to set the DAI bit
3041 * and frame clocks as low as possible to save system power.
3042 */
3043int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3044 int div_id, int div)
3045{
f0fba2ad
LG		 3046 if (dai->driver && dai->driver->ops->set_clkdiv)
3047 return dai->driver->ops->set_clkdiv(dai, div_id, div);
8c6529db
LG		 3048 else
3049 return -EINVAL;
3050}
3051EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3052
3053/**
3054 * snd_soc_dai_set_pll - configure DAI PLL.
3055 * @dai: DAI
3056 * @pll_id: DAI specific PLL ID
85488037 3057 * @source: DAI specific source for the PLL
8c6529db
LG		 3058 * @freq_in: PLL input clock frequency in Hz
3059 * @freq_out: requested PLL output clock frequency in Hz
3060 *
3061 * Configures and enables PLL to generate output clock based on input clock.
3062 */
85488037
MB		 3063int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3064 unsigned int freq_in, unsigned int freq_out)
8c6529db 3065{
f0fba2ad
LG		 3066 if (dai->driver && dai->driver->ops->set_pll)
3067 return dai->driver->ops->set_pll(dai, pll_id, source,
85488037 3068 freq_in, freq_out);
8c6529db
LG		 3069 else
3070 return -EINVAL;
3071}
3072EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3073
3074/**
3075 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3076 * @dai: DAI
8c6529db
LG		 3077 * @fmt: SND_SOC_DAIFMT_ format value.
3078 *
3079 * Configures the DAI hardware format and clocking.
3080 */
3081int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3082{
f0fba2ad
LG		 3083 if (dai->driver && dai->driver->ops->set_fmt)
3084 return dai->driver->ops->set_fmt(dai, fmt);
8c6529db
LG		 3085 else
3086 return -EINVAL;
3087}
3088EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3089
3090/**
3091 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3092 * @dai: DAI
a5479e38
DR		 3093 * @tx_mask: bitmask representing active TX slots.
3094 * @rx_mask: bitmask representing active RX slots.
8c6529db 3095 * @slots: Number of slots in use.
a5479e38 3096 * @slot_width: Width in bits for each slot.
8c6529db
LG		 3097 *
3098 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3099 * specific.
3100 */
3101int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
a5479e38 3102 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
8c6529db 3103{
f0fba2ad
LG		 3104 if (dai->driver && dai->driver->ops->set_tdm_slot)
3105 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
a5479e38 3106 slots, slot_width);
8c6529db
LG		 3107 else
3108 return -EINVAL;
3109}
3110EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3111
472df3cb
BS		 3112/**
3113 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3114 * @dai: DAI
3115 * @tx_num: how many TX channels
3116 * @tx_slot: pointer to an array which imply the TX slot number channel
3117 * 0~num-1 uses
3118 * @rx_num: how many RX channels
3119 * @rx_slot: pointer to an array which imply the RX slot number channel
3120 * 0~num-1 uses
3121 *
3122 * configure the relationship between channel number and TDM slot number.
3123 */
3124int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3125 unsigned int tx_num, unsigned int *tx_slot,
3126 unsigned int rx_num, unsigned int *rx_slot)
3127{
f0fba2ad
LG		 3128 if (dai->driver && dai->driver->ops->set_channel_map)
3129 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
472df3cb
BS		 3130 rx_num, rx_slot);
3131 else
3132 return -EINVAL;
3133}
3134EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3135
8c6529db
LG		 3136/**
3137 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3138 * @dai: DAI
3139 * @tristate: tristate enable
3140 *
3141 * Tristates the DAI so that others can use it.
3142 */
3143int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3144{
f0fba2ad
LG		 3145 if (dai->driver && dai->driver->ops->set_tristate)
3146 return dai->driver->ops->set_tristate(dai, tristate);
8c6529db
LG		 3147 else
3148 return -EINVAL;
3149}
3150EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3151
3152/**
3153 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3154 * @dai: DAI
3155 * @mute: mute enable
3156 *
3157 * Mutes the DAI DAC.
3158 */
3159int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3160{
f0fba2ad
LG		 3161 if (dai->driver && dai->driver->ops->digital_mute)
3162 return dai->driver->ops->digital_mute(dai, mute);
8c6529db
LG		 3163 else
3164 return -EINVAL;
3165}
3166EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3167
c5af3a2e
MB		 3168/**
3169 * snd_soc_register_card - Register a card with the ASoC core
3170 *
ac11a2b3 3171 * @card: Card to register
c5af3a2e 3172 *
c5af3a2e 3173 */
70a7ca34 3174int snd_soc_register_card(struct snd_soc_card *card)
c5af3a2e 3175{
f0fba2ad
LG		 3176 int i;
3177
c5af3a2e
MB		 3178 if (!card->name || !card->dev)
3179 return -EINVAL;
3180
111c6419
SW		 3181 snd_soc_initialize_card_lists(card);
3182
150dd2f8
VK		 3183 soc_init_card_debugfs(card);
3184
2eea392d
JN		 3185 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
3186 (card->num_links + card->num_aux_devs),
3187 GFP_KERNEL);
f0fba2ad
LG		 3188 if (card->rtd == NULL)
3189 return -ENOMEM;
2eea392d 3190 card->rtd_aux = &card->rtd[card->num_links];
f0fba2ad
LG		 3191
3192 for (i = 0; i < card->num_links; i++)
3193 card->rtd[i].dai_link = &card->dai_link[i];
3194
c5af3a2e
MB		 3195 INIT_LIST_HEAD(&card->list);
3196 card->instantiated = 0;
f0fba2ad 3197 mutex_init(&card->mutex);
c5af3a2e
MB		 3198
3199 mutex_lock(&client_mutex);
3200 list_add(&card->list, &card_list);
435c5e25 3201 snd_soc_instantiate_cards();
c5af3a2e
MB		 3202 mutex_unlock(&client_mutex);
3203
3204 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3205
3206 return 0;
3207}
70a7ca34 3208EXPORT_SYMBOL_GPL(snd_soc_register_card);
c5af3a2e
MB		 3209
3210/**
3211 * snd_soc_unregister_card - Unregister a card with the ASoC core
3212 *
ac11a2b3 3213 * @card: Card to unregister
c5af3a2e 3214 *
c5af3a2e 3215 */
70a7ca34 3216int snd_soc_unregister_card(struct snd_soc_card *card)
c5af3a2e 3217{
b0e26485
VK		 3218 if (card->instantiated)
3219 soc_cleanup_card_resources(card);
c5af3a2e
MB		 3220 mutex_lock(&client_mutex);
3221 list_del(&card->list);
3222 mutex_unlock(&client_mutex);
c5af3a2e
MB		 3223 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3224
3225 return 0;
3226}
70a7ca34 3227EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
c5af3a2e 3228
f0fba2ad
LG		 3229/*
3230 * Simplify DAI link configuration by removing ".-1" from device names
3231 * and sanitizing names.
3232 */
0b9a214a 3233static char *fmt_single_name(struct device *dev, int *id)
f0fba2ad
LG		 3234{
3235 char *found, name[NAME_SIZE];
3236 int id1, id2;
3237
3238 if (dev_name(dev) == NULL)
3239 return NULL;
3240
58818a77 3241 strlcpy(name, dev_name(dev), NAME_SIZE);
f0fba2ad
LG		 3242
3243 /* are we a "%s.%d" name (platform and SPI components) */
3244 found = strstr(name, dev->driver->name);
3245 if (found) {
3246 /* get ID */
3247 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3248
3249 /* discard ID from name if ID == -1 */
3250 if (*id == -1)
3251 found[strlen(dev->driver->name)] = '\0';
3252 }
3253
3254 } else {
3255 /* I2C component devices are named "bus-addr" */
3256 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3257 char tmp[NAME_SIZE];
3258
3259 /* create unique ID number from I2C addr and bus */
05899446 3260 *id = ((id1 & 0xffff) << 16) + id2;
f0fba2ad
LG		 3261
3262 /* sanitize component name for DAI link creation */
3263 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
58818a77 3264 strlcpy(name, tmp, NAME_SIZE);
f0fba2ad
LG		 3265 } else
3266 *id = 0;
3267 }
3268
3269 return kstrdup(name, GFP_KERNEL);
3270}
3271
3272/*
3273 * Simplify DAI link naming for single devices with multiple DAIs by removing
3274 * any ".-1" and using the DAI name (instead of device name).
3275 */
3276static inline char *fmt_multiple_name(struct device *dev,
3277 struct snd_soc_dai_driver *dai_drv)
3278{
3279 if (dai_drv->name == NULL) {
3280 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
3281 dev_name(dev));
3282 return NULL;
3283 }
3284
3285 return kstrdup(dai_drv->name, GFP_KERNEL);
3286}
3287
9115171a
MB		 3288/**
3289 * snd_soc_register_dai - Register a DAI with the ASoC core
3290 *
ac11a2b3 3291 * @dai: DAI to register
9115171a 3292 */
f0fba2ad
LG		 3293int snd_soc_register_dai(struct device *dev,
3294 struct snd_soc_dai_driver *dai_drv)
9115171a 3295{
f0fba2ad
LG		 3296 struct snd_soc_dai *dai;
3297
3298 dev_dbg(dev, "dai register %s\n", dev_name(dev));
9115171a 3299
f0fba2ad
LG		 3300 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3301 if (dai == NULL)
3302 return -ENOMEM;
9115171a 3303
f0fba2ad
LG		 3304 /* create DAI component name */
3305 dai->name = fmt_single_name(dev, &dai->id);
3306 if (dai->name == NULL) {
3307 kfree(dai);
3308 return -ENOMEM;
3309 }
6335d055 3310
f0fba2ad
LG		 3311 dai->dev = dev;
3312 dai->driver = dai_drv;
3313 if (!dai->driver->ops)
3314 dai->driver->ops = &null_dai_ops;
9115171a
MB		 3315
3316 mutex_lock(&client_mutex);
3317 list_add(&dai->list, &dai_list);
435c5e25 3318 snd_soc_instantiate_cards();
9115171a
MB		 3319 mutex_unlock(&client_mutex);
3320
3321 pr_debug("Registered DAI '%s'\n", dai->name);
3322
3323 return 0;
3324}
3325EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3326
3327/**
3328 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3329 *
ac11a2b3 3330 * @dai: DAI to unregister
9115171a 3331 */
f0fba2ad 3332void snd_soc_unregister_dai(struct device *dev)
9115171a 3333{
f0fba2ad
LG		 3334 struct snd_soc_dai *dai;
3335
3336 list_for_each_entry(dai, &dai_list, list) {
3337 if (dev == dai->dev)
3338 goto found;
3339 }
3340 return;
3341
3342found:
9115171a
MB		 3343 mutex_lock(&client_mutex);
3344 list_del(&dai->list);
3345 mutex_unlock(&client_mutex);
3346
3347 pr_debug("Unregistered DAI '%s'\n", dai->name);
f0fba2ad
LG		 3348 kfree(dai->name);
3349 kfree(dai);
9115171a
MB		 3350}
3351EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3352
3353/**
3354 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3355 *
ac11a2b3
MB		 3356 * @dai: Array of DAIs to register
3357 * @count: Number of DAIs
9115171a 3358 */
f0fba2ad
LG		 3359int snd_soc_register_dais(struct device *dev,
3360 struct snd_soc_dai_driver *dai_drv, size_t count)
9115171a 3361{
f0fba2ad
LG		 3362 struct snd_soc_dai *dai;
3363 int i, ret = 0;
3364
720ffa4c 3365 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
9115171a
MB		 3366
3367 for (i = 0; i < count; i++) {
f0fba2ad
LG		 3368
3369 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
c46e0079
AL		 3370 if (dai == NULL) {
3371 ret = -ENOMEM;
3372 goto err;
3373 }
f0fba2ad
LG		 3374
3375 /* create DAI component name */
3376 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3377 if (dai->name == NULL) {
3378 kfree(dai);
3379 ret = -EINVAL;
9115171a 3380 goto err;
f0fba2ad
LG		 3381 }
3382
3383 dai->dev = dev;
f0fba2ad 3384 dai->driver = &dai_drv[i];
0f9141c9
MB		 3385 if (dai->driver->id)
3386 dai->id = dai->driver->id;
3387 else
3388 dai->id = i;
f0fba2ad
LG		 3389 if (!dai->driver->ops)
3390 dai->driver->ops = &null_dai_ops;
3391
3392 mutex_lock(&client_mutex);
3393 list_add(&dai->list, &dai_list);
3394 mutex_unlock(&client_mutex);
3395
3396 pr_debug("Registered DAI '%s'\n", dai->name);
9115171a
MB		 3397 }
3398
1dcb4f38 3399 mutex_lock(&client_mutex);
f0fba2ad 3400 snd_soc_instantiate_cards();
1dcb4f38 3401 mutex_unlock(&client_mutex);
9115171a
MB		 3402 return 0;
3403
3404err:
3405 for (i--; i >= 0; i--)
f0fba2ad 3406 snd_soc_unregister_dai(dev);
9115171a
MB		 3407
3408 return ret;
3409}
3410EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3411
3412/**
3413 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3414 *
ac11a2b3
MB		 3415 * @dai: Array of DAIs to unregister
3416 * @count: Number of DAIs
9115171a 3417 */
f0fba2ad 3418void snd_soc_unregister_dais(struct device *dev, size_t count)
9115171a
MB		 3419{
3420 int i;
3421
3422 for (i = 0; i < count; i++)
f0fba2ad 3423 snd_soc_unregister_dai(dev);
9115171a
MB		 3424}
3425EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3426
12a48a8c
MB		 3427/**
3428 * snd_soc_register_platform - Register a platform with the ASoC core
3429 *
ac11a2b3 3430 * @platform: platform to register
12a48a8c 3431 */
f0fba2ad
LG		 3432int snd_soc_register_platform(struct device *dev,
3433 struct snd_soc_platform_driver *platform_drv)
12a48a8c 3434{
f0fba2ad
LG		 3435 struct snd_soc_platform *platform;
3436
3437 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3438
3439 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3440 if (platform == NULL)
3441 return -ENOMEM;
3442
3443 /* create platform component name */
3444 platform->name = fmt_single_name(dev, &platform->id);
3445 if (platform->name == NULL) {
3446 kfree(platform);
3447 return -ENOMEM;
3448 }
12a48a8c 3449
f0fba2ad
LG		 3450 platform->dev = dev;
3451 platform->driver = platform_drv;
12a48a8c
MB		 3452
3453 mutex_lock(&client_mutex);
3454 list_add(&platform->list, &platform_list);
435c5e25 3455 snd_soc_instantiate_cards();
12a48a8c
MB		 3456 mutex_unlock(&client_mutex);
3457
3458 pr_debug("Registered platform '%s'\n", platform->name);
3459
3460 return 0;
3461}
3462EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3463
3464/**
3465 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3466 *
ac11a2b3 3467 * @platform: platform to unregister
12a48a8c 3468 */
f0fba2ad 3469void snd_soc_unregister_platform(struct device *dev)
12a48a8c 3470{
f0fba2ad
LG		 3471 struct snd_soc_platform *platform;
3472
3473 list_for_each_entry(platform, &platform_list, list) {
3474 if (dev == platform->dev)
3475 goto found;
3476 }
3477 return;
3478
3479found:
12a48a8c
MB		 3480 mutex_lock(&client_mutex);
3481 list_del(&platform->list);
3482 mutex_unlock(&client_mutex);
3483
3484 pr_debug("Unregistered platform '%s'\n", platform->name);
f0fba2ad
LG		 3485 kfree(platform->name);
3486 kfree(platform);
12a48a8c
MB		 3487}
3488EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3489
151ab22c
MB		 3490static u64 codec_format_map[] = {
3491 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3492 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3493 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3494 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3495 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3496 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3497 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3498 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3499 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3500 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3501 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3502 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3503 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3504 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3505 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3506 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3507};
3508
3509/* Fix up the DAI formats for endianness: codecs don't actually see
3510 * the endianness of the data but we're using the CPU format
3511 * definitions which do need to include endianness so we ensure that
3512 * codec DAIs always have both big and little endian variants set.
3513 */
3514static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3515{
3516 int i;
3517
3518 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3519 if (stream->formats & codec_format_map[i])
3520 stream->formats |= codec_format_map[i];
3521}
3522
0d0cf00a
MB		 3523/**
3524 * snd_soc_register_codec - Register a codec with the ASoC core
3525 *
ac11a2b3 3526 * @codec: codec to register
0d0cf00a 3527 */
f0fba2ad 3528int snd_soc_register_codec(struct device *dev,
001ae4c0
MB		 3529 const struct snd_soc_codec_driver *codec_drv,
3530 struct snd_soc_dai_driver *dai_drv,
3531 int num_dai)
0d0cf00a 3532{
3335ddca 3533 size_t reg_size;
f0fba2ad
LG		 3534 struct snd_soc_codec *codec;
3535 int ret, i;
151ab22c 3536
f0fba2ad
LG		 3537 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3538
3539 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3540 if (codec == NULL)
3541 return -ENOMEM;
0d0cf00a 3542
f0fba2ad
LG		 3543 /* create CODEC component name */
3544 codec->name = fmt_single_name(dev, &codec->id);
3545 if (codec->name == NULL) {
3546 kfree(codec);
3547 return -ENOMEM;
3548 }
3549
23bbce34
DP		 3550 if (codec_drv->compress_type)
3551 codec->compress_type = codec_drv->compress_type;
3552 else
3553 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3554
c3acec26
MB		 3555 codec->write = codec_drv->write;
3556 codec->read = codec_drv->read;
1500b7b5
DP		 3557 codec->volatile_register = codec_drv->volatile_register;
3558 codec->readable_register = codec_drv->readable_register;
ce6120cc
LG		 3559 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3560 codec->dapm.dev = dev;
3561 codec->dapm.codec = codec;
474b62d6 3562 codec->dapm.seq_notifier = codec_drv->seq_notifier;
7a30a3db
DP		 3563 codec->dev = dev;
3564 codec->driver = codec_drv;
3565 codec->num_dai = num_dai;
3566 mutex_init(&codec->mutex);
ce6120cc 3567
f0fba2ad
LG		 3568 /* allocate CODEC register cache */
3569 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3335ddca 3570 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
aea170a0 3571 codec->reg_size = reg_size;
3335ddca
DP		 3572 /* it is necessary to make a copy of the default register cache
3573 * because in the case of using a compression type that requires
3574 * the default register cache to be marked as __devinitconst the
3575 * kernel might have freed the array by the time we initialize
3576 * the cache.
3577 */
2aa86323
DP		 3578 if (codec_drv->reg_cache_default) {
3579 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3580 reg_size, GFP_KERNEL);
3581 if (!codec->reg_def_copy) {
3582 ret = -ENOMEM;
3583 goto fail;
3584 }
f0fba2ad 3585 }
151ab22c
MB		 3586 }
3587
1500b7b5
DP		 3588 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3589 if (!codec->volatile_register)
3590 codec->volatile_register = snd_soc_default_volatile_register;
3591 if (!codec->readable_register)
3592 codec->readable_register = snd_soc_default_readable_register;
3593 }
3594
f0fba2ad
LG		 3595 for (i = 0; i < num_dai; i++) {
3596 fixup_codec_formats(&dai_drv[i].playback);
3597 fixup_codec_formats(&dai_drv[i].capture);
3598 }
3599
26b01ccd
MB		 3600 /* register any DAIs */
3601 if (num_dai) {
3602 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3603 if (ret < 0)
fdf0f54d 3604 goto fail;
26b01ccd 3605 }
f0fba2ad 3606
0d0cf00a
MB		 3607 mutex_lock(&client_mutex);
3608 list_add(&codec->list, &codec_list);
3609 snd_soc_instantiate_cards();
3610 mutex_unlock(&client_mutex);
3611
3612 pr_debug("Registered codec '%s'\n", codec->name);
0d0cf00a 3613 return 0;
f0fba2ad 3614
fdf0f54d 3615fail:
3335ddca
DP		 3616 kfree(codec->reg_def_copy);
3617 codec->reg_def_copy = NULL;
f0fba2ad
LG		 3618 kfree(codec->name);
3619 kfree(codec);
3620 return ret;
0d0cf00a
MB		 3621}
3622EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3623
3624/**
3625 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3626 *
ac11a2b3 3627 * @codec: codec to unregister
0d0cf00a 3628 */
f0fba2ad 3629void snd_soc_unregister_codec(struct device *dev)
0d0cf00a 3630{
f0fba2ad
LG		 3631 struct snd_soc_codec *codec;
3632 int i;
3633
3634 list_for_each_entry(codec, &codec_list, list) {
3635 if (dev == codec->dev)
3636 goto found;
3637 }
3638 return;
3639
3640found:
26b01ccd
MB		 3641 if (codec->num_dai)
3642 for (i = 0; i < codec->num_dai; i++)
3643 snd_soc_unregister_dai(dev);
f0fba2ad 3644
0d0cf00a
MB		 3645 mutex_lock(&client_mutex);
3646 list_del(&codec->list);
3647 mutex_unlock(&client_mutex);
3648
3649 pr_debug("Unregistered codec '%s'\n", codec->name);
f0fba2ad 3650
7a30a3db 3651 snd_soc_cache_exit(codec);
3335ddca 3652 kfree(codec->reg_def_copy);
1aafcd4d 3653 kfree(codec->name);
f0fba2ad 3654 kfree(codec);
0d0cf00a
MB		 3655}
3656EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3657
c9b3a40f 3658static int __init snd_soc_init(void)
db2a4165 3659{
384c89e2 3660#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 3661 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3662 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
384c89e2
MB		 3663 printk(KERN_WARNING
3664 "ASoC: Failed to create debugfs directory\n");
8a9dab1a 3665 snd_soc_debugfs_root = NULL;
384c89e2 3666 }
c3c5a19a 3667
8a9dab1a 3668 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
c3c5a19a
MB		 3669 &codec_list_fops))
3670 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3671
8a9dab1a 3672 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
f3208780
MB		 3673 &dai_list_fops))
3674 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
19c7ac27 3675
8a9dab1a 3676 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
19c7ac27
MB		 3677 &platform_list_fops))
3678 pr_warn("ASoC: Failed to create platform list debugfs file\n");
384c89e2
MB		 3679#endif
3680
db2a4165
FM		 3681 return platform_driver_register(&soc_driver);
3682}
4abe8e16 3683module_init(snd_soc_init);
db2a4165 3684
7d8c16a6 3685static void __exit snd_soc_exit(void)
db2a4165 3686{
384c89e2 3687#ifdef CONFIG_DEBUG_FS
8a9dab1a 3688 debugfs_remove_recursive(snd_soc_debugfs_root);
384c89e2 3689#endif
3ff3f64b 3690 platform_driver_unregister(&soc_driver);
db2a4165 3691}
db2a4165
FM		 3692module_exit(snd_soc_exit);
3693
3694/* Module information */
d331124d 3695MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
db2a4165
FM		 3696MODULE_DESCRIPTION("ALSA SoC Core");
3697MODULE_LICENSE("GPL");
8b45a209 3698MODULE_ALIAS("platform:soc-audio");
kernel source for telekom puls (alcatel/mediatek)