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ASoC: dt: sgtl5000.txt: Add description for 'reg' field
[deliverable/linux.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>
f0e8ed85 33#include <linux/ctype.h>
5a0e3ad6 34#include <linux/slab.h>
bec4fa05 35#include <linux/of.h>
474828a4 36#include <sound/ac97_codec.h>
db2a4165 37#include <sound/core.h>
3028eb8c 38#include <sound/jack.h>
db2a4165
FM		 39#include <sound/pcm.h>
40#include <sound/pcm_params.h>
41#include <sound/soc.h>
db2a4165
FM		 42#include <sound/initval.h>
43
a8b1d34f
MB		 44#define CREATE_TRACE_POINTS
45#include <trace/events/asoc.h>
46
f0fba2ad
LG		 47#define NAME_SIZE 32
48
db2a4165
FM		 49static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
50
384c89e2 51#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 52struct dentry *snd_soc_debugfs_root;
53EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
384c89e2
MB		 54#endif
55
c5af3a2e
MB		 56static DEFINE_MUTEX(client_mutex);
57static LIST_HEAD(card_list);
9115171a 58static LIST_HEAD(dai_list);
12a48a8c 59static LIST_HEAD(platform_list);
0d0cf00a 60static LIST_HEAD(codec_list);
c5af3a2e 61
db2a4165
FM		 62/*
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
66 */
67static int pmdown_time = 5000;
68module_param(pmdown_time, int, 0);
69MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
70
2bc9a81e
DP		 71/* returns the minimum number of bytes needed to represent
72 * a particular given value */
73static int min_bytes_needed(unsigned long val)
74{
75 int c = 0;
76 int i;
77
78 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
79 if (val & (1UL << i))
80 break;
81 c = (sizeof val * 8) - c;
82 if (!c || (c % 8))
83 c = (c + 8) / 8;
84 else
85 c /= 8;
86 return c;
87}
88
13fd179f
DP		 89/* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91static int format_register_str(struct snd_soc_codec *codec,
92 unsigned int reg, char *buf, size_t len)
93{
00b317a4
SW		 94 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
95 int regsize = codec->driver->reg_word_size * 2;
13fd179f
DP		 96 int ret;
97 char tmpbuf[len + 1];
98 char regbuf[regsize + 1];
99
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
102 WARN_ON(len > 63);
103
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize + regsize + 2 + 1 != len)
106 return -EINVAL;
107
25032c11 108 ret = snd_soc_read(codec, reg);
13fd179f
DP		 109 if (ret < 0) {
110 memset(regbuf, 'X', regsize);
111 regbuf[regsize] = '\0';
112 } else {
113 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
114 }
115
116 /* prepare the buffer */
117 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf, tmpbuf, len);
120
121 return 0;
122}
123
2624d5fa 124/* codec register dump */
13fd179f
DP		 125static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
126 size_t count, loff_t pos)
2624d5fa 127{
13fd179f 128 int i, step = 1;
2bc9a81e 129 int wordsize, regsize;
13fd179f
DP		 130 int len;
131 size_t total = 0;
132 loff_t p = 0;
2bc9a81e 133
00b317a4
SW		 134 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
135 regsize = codec->driver->reg_word_size * 2;
2624d5fa 136
13fd179f
DP		 137 len = wordsize + regsize + 2 + 1;
138
f0fba2ad 139 if (!codec->driver->reg_cache_size)
2624d5fa
MB		 140 return 0;
141
f0fba2ad
LG		 142 if (codec->driver->reg_cache_step)
143 step = codec->driver->reg_cache_step;
2624d5fa 144
f0fba2ad 145 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
b92d150b 146 if (!snd_soc_codec_readable_register(codec, i))
2624d5fa 147 continue;
f0fba2ad
LG		 148 if (codec->driver->display_register) {
149 count += codec->driver->display_register(codec, buf + count,
2624d5fa 150 PAGE_SIZE - count, i);
5164d74d 151 } else {
13fd179f
DP		 152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
154 if (p >= pos) {
155 if (total + len >= count - 1)
156 break;
157 format_register_str(codec, i, buf + total, len);
158 total += len;
159 }
160 p += len;
5164d74d 161 }
2624d5fa
MB		 162 }
163
13fd179f 164 total = min(total, count - 1);
2624d5fa 165
13fd179f 166 return total;
2624d5fa 167}
13fd179f 168
2624d5fa
MB		 169static ssize_t codec_reg_show(struct device *dev,
170 struct device_attribute *attr, char *buf)
171{
36ae1a96 172 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
f0fba2ad 173
13fd179f 174 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
2624d5fa
MB		 175}
176
177static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
178
dbe21408
MB		 179static ssize_t pmdown_time_show(struct device *dev,
180 struct device_attribute *attr, char *buf)
181{
36ae1a96 182 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
dbe21408 183
f0fba2ad 184 return sprintf(buf, "%ld\n", rtd->pmdown_time);
dbe21408
MB		 185}
186
187static ssize_t pmdown_time_set(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
190{
36ae1a96 191 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
c593b520 192 int ret;
dbe21408 193
c593b520
MB		 194 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
195 if (ret)
196 return ret;
dbe21408
MB		 197
198 return count;
199}
200
201static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
202
2624d5fa
MB		 203#ifdef CONFIG_DEBUG_FS
204static int codec_reg_open_file(struct inode *inode, struct file *file)
205{
206 file->private_data = inode->i_private;
207 return 0;
208}
209
210static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
13fd179f 211 size_t count, loff_t *ppos)
2624d5fa
MB		 212{
213 ssize_t ret;
214 struct snd_soc_codec *codec = file->private_data;
13fd179f
DP		 215 char *buf;
216
217 if (*ppos < 0 || !count)
218 return -EINVAL;
219
220 buf = kmalloc(count, GFP_KERNEL);
2624d5fa
MB		 221 if (!buf)
222 return -ENOMEM;
13fd179f
DP		 223
224 ret = soc_codec_reg_show(codec, buf, count, *ppos);
225 if (ret >= 0) {
226 if (copy_to_user(user_buf, buf, ret)) {
227 kfree(buf);
228 return -EFAULT;
229 }
230 *ppos += ret;
231 }
232
2624d5fa
MB		 233 kfree(buf);
234 return ret;
235}
236
237static ssize_t codec_reg_write_file(struct file *file,
238 const char __user *user_buf, size_t count, loff_t *ppos)
239{
240 char buf[32];
34e268d8 241 size_t buf_size;
2624d5fa
MB		 242 char *start = buf;
243 unsigned long reg, value;
2624d5fa
MB		 244 struct snd_soc_codec *codec = file->private_data;
245
246 buf_size = min(count, (sizeof(buf)-1));
247 if (copy_from_user(buf, user_buf, buf_size))
248 return -EFAULT;
249 buf[buf_size] = 0;
2624d5fa
MB		 250
251 while (*start == ' ')
252 start++;
253 reg = simple_strtoul(start, &start, 16);
2624d5fa
MB		 254 while (*start == ' ')
255 start++;
256 if (strict_strtoul(start, 16, &value))
257 return -EINVAL;
0d51a9cb
MB		 258
259 /* Userspace has been fiddling around behind the kernel's back */
260 add_taint(TAINT_USER);
261
e4f078d8 262 snd_soc_write(codec, reg, value);
2624d5fa
MB		 263 return buf_size;
264}
265
266static const struct file_operations codec_reg_fops = {
267 .open = codec_reg_open_file,
268 .read = codec_reg_read_file,
269 .write = codec_reg_write_file,
6038f373 270 .llseek = default_llseek,
2624d5fa
MB		 271};
272
273static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
274{
d6ce4cf3
JN		 275 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
276
277 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
278 debugfs_card_root);
2624d5fa 279 if (!codec->debugfs_codec_root) {
64e60f9f 280 dev_warn(codec->dev, "Failed to create codec debugfs directory\n");
2624d5fa
MB		 281 return;
282 }
283
aaee8ef1
MB		 284 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
285 &codec->cache_sync);
286 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
287 &codec->cache_only);
288
2624d5fa
MB		 289 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
290 codec->debugfs_codec_root,
291 codec, &codec_reg_fops);
292 if (!codec->debugfs_reg)
64e60f9f 293 dev_warn(codec->dev, "Failed to create codec register debugfs file\n");
2624d5fa 294
8eecaf62 295 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
2624d5fa
MB		 296}
297
298static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
299{
300 debugfs_remove_recursive(codec->debugfs_codec_root);
301}
302
731f1ab2
SG		 303static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
304{
305 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
306
307 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
308 debugfs_card_root);
309 if (!platform->debugfs_platform_root) {
310 dev_warn(platform->dev,
311 "Failed to create platform debugfs directory\n");
312 return;
313 }
314
315 snd_soc_dapm_debugfs_init(&platform->dapm,
316 platform->debugfs_platform_root);
317}
318
319static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
320{
321 debugfs_remove_recursive(platform->debugfs_platform_root);
322}
323
c3c5a19a
MB		 324static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
325 size_t count, loff_t *ppos)
326{
327 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 328 ssize_t len, ret = 0;
c3c5a19a
MB		 329 struct snd_soc_codec *codec;
330
331 if (!buf)
332 return -ENOMEM;
333
2b194f9d
MB		 334 list_for_each_entry(codec, &codec_list, list) {
335 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
336 codec->name);
337 if (len >= 0)
338 ret += len;
339 if (ret > PAGE_SIZE) {
340 ret = PAGE_SIZE;
341 break;
342 }
343 }
c3c5a19a
MB		 344
345 if (ret >= 0)
346 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
347
348 kfree(buf);
349
350 return ret;
351}
352
353static const struct file_operations codec_list_fops = {
354 .read = codec_list_read_file,
355 .llseek = default_llseek,/* read accesses f_pos */
356};
357
f3208780
MB		 358static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
359 size_t count, loff_t *ppos)
360{
361 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 362 ssize_t len, ret = 0;
f3208780
MB		 363 struct snd_soc_dai *dai;
364
365 if (!buf)
366 return -ENOMEM;
367
2b194f9d
MB		 368 list_for_each_entry(dai, &dai_list, list) {
369 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
370 if (len >= 0)
371 ret += len;
372 if (ret > PAGE_SIZE) {
373 ret = PAGE_SIZE;
374 break;
375 }
376 }
f3208780 377
2b194f9d 378 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
f3208780
MB		 379
380 kfree(buf);
381
382 return ret;
383}
384
385static const struct file_operations dai_list_fops = {
386 .read = dai_list_read_file,
387 .llseek = default_llseek,/* read accesses f_pos */
388};
389
19c7ac27
MB		 390static ssize_t platform_list_read_file(struct file *file,
391 char __user *user_buf,
392 size_t count, loff_t *ppos)
393{
394 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 395 ssize_t len, ret = 0;
19c7ac27
MB		 396 struct snd_soc_platform *platform;
397
398 if (!buf)
399 return -ENOMEM;
400
2b194f9d
MB		 401 list_for_each_entry(platform, &platform_list, list) {
402 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
403 platform->name);
404 if (len >= 0)
405 ret += len;
406 if (ret > PAGE_SIZE) {
407 ret = PAGE_SIZE;
408 break;
409 }
410 }
19c7ac27 411
2b194f9d 412 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
19c7ac27
MB		 413
414 kfree(buf);
415
416 return ret;
417}
418
419static const struct file_operations platform_list_fops = {
420 .read = platform_list_read_file,
421 .llseek = default_llseek,/* read accesses f_pos */
422};
423
a6052154
JN		 424static void soc_init_card_debugfs(struct snd_soc_card *card)
425{
426 card->debugfs_card_root = debugfs_create_dir(card->name,
8a9dab1a 427 snd_soc_debugfs_root);
3a45b867 428 if (!card->debugfs_card_root) {
a6052154 429 dev_warn(card->dev,
7c08be84 430 "ASoC: Failed to create card debugfs directory\n");
3a45b867
JN		 431 return;
432 }
433
434 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
435 card->debugfs_card_root,
436 &card->pop_time);
437 if (!card->debugfs_pop_time)
438 dev_warn(card->dev,
439 "Failed to create pop time debugfs file\n");
a6052154
JN		 440}
441
442static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
443{
444 debugfs_remove_recursive(card->debugfs_card_root);
445}
446
2624d5fa
MB		 447#else
448
449static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
450{
451}
452
453static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
454{
455}
b95fccbc 456
731f1ab2
SG		 457static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
458{
459}
460
461static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
462{
463}
464
b95fccbc
AL		 465static inline void soc_init_card_debugfs(struct snd_soc_card *card)
466{
467}
468
469static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
470{
471}
2624d5fa
MB		 472#endif
473
db2a4165
FM		 474#ifdef CONFIG_SND_SOC_AC97_BUS
475/* unregister ac97 codec */
476static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
477{
478 if (codec->ac97->dev.bus)
479 device_unregister(&codec->ac97->dev);
480 return 0;
481}
482
483/* stop no dev release warning */
484static void soc_ac97_device_release(struct device *dev){}
485
486/* register ac97 codec to bus */
487static int soc_ac97_dev_register(struct snd_soc_codec *codec)
488{
489 int err;
490
491 codec->ac97->dev.bus = &ac97_bus_type;
4ac5c61f 492 codec->ac97->dev.parent = codec->card->dev;
db2a4165
FM		 493 codec->ac97->dev.release = soc_ac97_device_release;
494
bb072bf0 495 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
f0fba2ad 496 codec->card->snd_card->number, 0, codec->name);
db2a4165
FM		 497 err = device_register(&codec->ac97->dev);
498 if (err < 0) {
499 snd_printk(KERN_ERR "Can't register ac97 bus\n");
500 codec->ac97->dev.bus = NULL;
501 return err;
502 }
503 return 0;
504}
505#endif
506
6f8ab4ac 507#ifdef CONFIG_PM_SLEEP
db2a4165 508/* powers down audio subsystem for suspend */
6f8ab4ac 509int snd_soc_suspend(struct device *dev)
db2a4165 510{
6f8ab4ac 511 struct snd_soc_card *card = dev_get_drvdata(dev);
2eea392d 512 struct snd_soc_codec *codec;
db2a4165
FM		 513 int i;
514
e3509ff0
DM		 515 /* If the initialization of this soc device failed, there is no codec
516 * associated with it. Just bail out in this case.
517 */
f0fba2ad 518 if (list_empty(&card->codec_dev_list))
e3509ff0
DM		 519 return 0;
520
6ed25978
AG		 521 /* Due to the resume being scheduled into a workqueue we could
522 * suspend before that's finished - wait for it to complete.
523 */
f0fba2ad
LG		 524 snd_power_lock(card->snd_card);
525 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
526 snd_power_unlock(card->snd_card);
6ed25978
AG		 527
528 /* we're going to block userspace touching us until resume completes */
f0fba2ad 529 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
6ed25978 530
a00f90f9 531 /* mute any active DACs */
f0fba2ad
LG		 532 for (i = 0; i < card->num_rtd; i++) {
533 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
534 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 535
f0fba2ad 536 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 537 continue;
538
f0fba2ad
LG		 539 if (drv->ops->digital_mute && dai->playback_active)
540 drv->ops->digital_mute(dai, 1);
db2a4165
FM		 541 }
542
4ccab3e7 543 /* suspend all pcms */
f0fba2ad
LG		 544 for (i = 0; i < card->num_rtd; i++) {
545 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 546 continue;
547
f0fba2ad 548 snd_pcm_suspend_all(card->rtd[i].pcm);
3efab7dc 549 }
4ccab3e7 550
87506549 551 if (card->suspend_pre)
70b2ac12 552 card->suspend_pre(card);
db2a4165 553
f0fba2ad
LG		 554 for (i = 0; i < card->num_rtd; i++) {
555 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
556 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 557
f0fba2ad 558 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 559 continue;
560
f0fba2ad
LG		 561 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
562 cpu_dai->driver->suspend(cpu_dai);
563 if (platform->driver->suspend && !platform->suspended) {
564 platform->driver->suspend(cpu_dai);
565 platform->suspended = 1;
566 }
db2a4165
FM		 567 }
568
569 /* close any waiting streams and save state */
f0fba2ad 570 for (i = 0; i < card->num_rtd; i++) {
5b84ba26 571 flush_delayed_work_sync(&card->rtd[i].delayed_work);
ce6120cc 572 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
f0fba2ad 573 }
db2a4165 574
f0fba2ad 575 for (i = 0; i < card->num_rtd; i++) {
7bd3a6f3 576 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3efab7dc 577
f0fba2ad 578 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 579 continue;
580
7bd3a6f3
MB		 581 snd_soc_dapm_stream_event(&card->rtd[i],
582 SNDRV_PCM_STREAM_PLAYBACK,
583 codec_dai,
584 SND_SOC_DAPM_STREAM_SUSPEND);
f0fba2ad 585
7bd3a6f3
MB		 586 snd_soc_dapm_stream_event(&card->rtd[i],
587 SNDRV_PCM_STREAM_CAPTURE,
588 codec_dai,
589 SND_SOC_DAPM_STREAM_SUSPEND);
db2a4165
FM		 590 }
591
f0fba2ad 592 /* suspend all CODECs */
2eea392d 593 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 594 /* If there are paths active then the CODEC will be held with
595 * bias _ON and should not be suspended. */
596 if (!codec->suspended && codec->driver->suspend) {
ce6120cc 597 switch (codec->dapm.bias_level) {
f0fba2ad 598 case SND_SOC_BIAS_STANDBY:
125a25da
MB		 599 /*
600 * If the CODEC is capable of idle
601 * bias off then being in STANDBY
602 * means it's doing something,
603 * otherwise fall through.
604 */
605 if (codec->dapm.idle_bias_off) {
606 dev_dbg(codec->dev,
607 "idle_bias_off CODEC on over suspend\n");
608 break;
609 }
f0fba2ad 610 case SND_SOC_BIAS_OFF:
84b315ee 611 codec->driver->suspend(codec);
f0fba2ad 612 codec->suspended = 1;
7be4ba24 613 codec->cache_sync = 1;
f0fba2ad
LG		 614 break;
615 default:
616 dev_dbg(codec->dev, "CODEC is on over suspend\n");
617 break;
618 }
1547aba9
MB		 619 }
620 }
db2a4165 621
f0fba2ad
LG		 622 for (i = 0; i < card->num_rtd; i++) {
623 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 624
f0fba2ad 625 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 626 continue;
627
f0fba2ad
LG		 628 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
629 cpu_dai->driver->suspend(cpu_dai);
db2a4165
FM		 630 }
631
87506549 632 if (card->suspend_post)
70b2ac12 633 card->suspend_post(card);
db2a4165
FM		 634
635 return 0;
636}
6f8ab4ac 637EXPORT_SYMBOL_GPL(snd_soc_suspend);
db2a4165 638
6ed25978
AG		 639/* deferred resume work, so resume can complete before we finished
640 * setting our codec back up, which can be very slow on I2C
641 */
642static void soc_resume_deferred(struct work_struct *work)
db2a4165 643{
f0fba2ad
LG		 644 struct snd_soc_card *card =
645 container_of(work, struct snd_soc_card, deferred_resume_work);
2eea392d 646 struct snd_soc_codec *codec;
db2a4165
FM		 647 int i;
648
6ed25978
AG		 649 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
650 * so userspace apps are blocked from touching us
651 */
652
f0fba2ad 653 dev_dbg(card->dev, "starting resume work\n");
6ed25978 654
9949788b 655 /* Bring us up into D2 so that DAPM starts enabling things */
f0fba2ad 656 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
9949788b 657
87506549 658 if (card->resume_pre)
70b2ac12 659 card->resume_pre(card);
db2a4165 660
f0fba2ad
LG		 661 /* resume AC97 DAIs */
662 for (i = 0; i < card->num_rtd; i++) {
663 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 664
f0fba2ad 665 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 666 continue;
667
f0fba2ad
LG		 668 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
669 cpu_dai->driver->resume(cpu_dai);
670 }
671
2eea392d 672 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 673 /* If the CODEC was idle over suspend then it will have been
674 * left with bias OFF or STANDBY and suspended so we must now
675 * resume. Otherwise the suspend was suppressed.
676 */
677 if (codec->driver->resume && codec->suspended) {
ce6120cc 678 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 679 case SND_SOC_BIAS_STANDBY:
680 case SND_SOC_BIAS_OFF:
681 codec->driver->resume(codec);
682 codec->suspended = 0;
683 break;
684 default:
685 dev_dbg(codec->dev, "CODEC was on over suspend\n");
686 break;
687 }
1547aba9
MB		 688 }
689 }
db2a4165 690
f0fba2ad 691 for (i = 0; i < card->num_rtd; i++) {
7bd3a6f3 692 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
3efab7dc 693
f0fba2ad 694 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 695 continue;
696
7bd3a6f3
MB		 697 snd_soc_dapm_stream_event(&card->rtd[i],
698 SNDRV_PCM_STREAM_PLAYBACK, codec_dai,
699 SND_SOC_DAPM_STREAM_RESUME);
f0fba2ad 700
7bd3a6f3
MB		 701 snd_soc_dapm_stream_event(&card->rtd[i],
702 SNDRV_PCM_STREAM_CAPTURE, codec_dai,
703 SND_SOC_DAPM_STREAM_RESUME);
db2a4165
FM		 704 }
705
3ff3f64b 706 /* unmute any active DACs */
f0fba2ad
LG		 707 for (i = 0; i < card->num_rtd; i++) {
708 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
709 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 710
f0fba2ad 711 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 712 continue;
713
f0fba2ad
LG		 714 if (drv->ops->digital_mute && dai->playback_active)
715 drv->ops->digital_mute(dai, 0);
db2a4165
FM		 716 }
717
f0fba2ad
LG		 718 for (i = 0; i < card->num_rtd; i++) {
719 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
720 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 721
f0fba2ad 722 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 723 continue;
724
f0fba2ad
LG		 725 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
726 cpu_dai->driver->resume(cpu_dai);
727 if (platform->driver->resume && platform->suspended) {
728 platform->driver->resume(cpu_dai);
729 platform->suspended = 0;
730 }
db2a4165
FM		 731 }
732
87506549 733 if (card->resume_post)
70b2ac12 734 card->resume_post(card);
db2a4165 735
f0fba2ad 736 dev_dbg(card->dev, "resume work completed\n");
6ed25978
AG		 737
738 /* userspace can access us now we are back as we were before */
f0fba2ad 739 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
6ed25978
AG		 740}
741
742/* powers up audio subsystem after a suspend */
6f8ab4ac 743int snd_soc_resume(struct device *dev)
6ed25978 744{
6f8ab4ac 745 struct snd_soc_card *card = dev_get_drvdata(dev);
82e14e8b 746 int i, ac97_control = 0;
b9dd94a8 747
5ff1ddf2
EM		 748 /* If the initialization of this soc device failed, there is no codec
749 * associated with it. Just bail out in this case.
750 */
751 if (list_empty(&card->codec_dev_list))
752 return 0;
753
64ab9baa
MB		 754 /* AC97 devices might have other drivers hanging off them so
755 * need to resume immediately. Other drivers don't have that
756 * problem and may take a substantial amount of time to resume
757 * due to I/O costs and anti-pop so handle them out of line.
758 */
f0fba2ad
LG		 759 for (i = 0; i < card->num_rtd; i++) {
760 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
82e14e8b
SW		 761 ac97_control |= cpu_dai->driver->ac97_control;
762 }
763 if (ac97_control) {
764 dev_dbg(dev, "Resuming AC97 immediately\n");
765 soc_resume_deferred(&card->deferred_resume_work);
766 } else {
767 dev_dbg(dev, "Scheduling resume work\n");
768 if (!schedule_work(&card->deferred_resume_work))
769 dev_err(dev, "resume work item may be lost\n");
64ab9baa 770 }
6ed25978 771
db2a4165
FM		 772 return 0;
773}
6f8ab4ac 774EXPORT_SYMBOL_GPL(snd_soc_resume);
db2a4165 775#else
6f8ab4ac
MB		 776#define snd_soc_suspend NULL
777#define snd_soc_resume NULL
db2a4165
FM		 778#endif
779
85e7652d 780static const struct snd_soc_dai_ops null_dai_ops = {
02a06d30
BS		 781};
782
f0fba2ad 783static int soc_bind_dai_link(struct snd_soc_card *card, int num)
db2a4165 784{
f0fba2ad
LG		 785 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
786 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
fe3e78e0 787 struct snd_soc_codec *codec;
435c5e25 788 struct snd_soc_platform *platform;
f0fba2ad 789 struct snd_soc_dai *codec_dai, *cpu_dai;
848dd8be 790 const char *platform_name;
435c5e25 791
f0fba2ad
LG		 792 if (rtd->complete)
793 return 1;
794 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
435c5e25 795
f0fba2ad
LG		 796 /* do we already have the CPU DAI for this link ? */
797 if (rtd->cpu_dai) {
798 goto find_codec;
799 }
800 /* no, then find CPU DAI from registered DAIs*/
801 list_for_each_entry(cpu_dai, &dai_list, list) {
5a504963
SW		 802 if (dai_link->cpu_dai_of_node) {
803 if (cpu_dai->dev->of_node != dai_link->cpu_dai_of_node)
804 continue;
805 } else {
806 if (strcmp(cpu_dai->name, dai_link->cpu_dai_name))
807 continue;
808 }
2610ab77
SW		 809
810 rtd->cpu_dai = cpu_dai;
811 goto find_codec;
435c5e25 812 }
f0fba2ad
LG		 813 dev_dbg(card->dev, "CPU DAI %s not registered\n",
814 dai_link->cpu_dai_name);
6308419a 815
f0fba2ad
LG		 816find_codec:
817 /* do we already have the CODEC for this link ? */
818 if (rtd->codec) {
819 goto find_platform;
820 }
821
822 /* no, then find CODEC from registered CODECs*/
823 list_for_each_entry(codec, &codec_list, list) {
5a504963
SW		 824 if (dai_link->codec_of_node) {
825 if (codec->dev->of_node != dai_link->codec_of_node)
826 continue;
827 } else {
828 if (strcmp(codec->name, dai_link->codec_name))
829 continue;
830 }
2610ab77
SW		 831
832 rtd->codec = codec;
833
834 /*
835 * CODEC found, so find CODEC DAI from registered DAIs from
836 * this CODEC
837 */
838 list_for_each_entry(codec_dai, &dai_list, list) {
839 if (codec->dev == codec_dai->dev &&
840 !strcmp(codec_dai->name,
841 dai_link->codec_dai_name)) {
f0fba2ad 842
2610ab77
SW		 843 rtd->codec_dai = codec_dai;
844 goto find_platform;
845 }
435c5e25 846 }
2610ab77
SW		 847 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
848 dai_link->codec_dai_name);
849
850 goto find_platform;
f0fba2ad
LG		 851 }
852 dev_dbg(card->dev, "CODEC %s not registered\n",
853 dai_link->codec_name);
6b05eda6 854
f0fba2ad 855find_platform:
848dd8be
MB		 856 /* do we need a platform? */
857 if (rtd->platform)
f0fba2ad 858 goto out;
848dd8be
MB		 859
860 /* if there's no platform we match on the empty platform */
861 platform_name = dai_link->platform_name;
5a504963 862 if (!platform_name && !dai_link->platform_of_node)
848dd8be
MB		 863 platform_name = "snd-soc-dummy";
864
865 /* no, then find one from the set of registered platforms */
f0fba2ad 866 list_for_each_entry(platform, &platform_list, list) {
5a504963
SW		 867 if (dai_link->platform_of_node) {
868 if (platform->dev->of_node !=
869 dai_link->platform_of_node)
870 continue;
871 } else {
872 if (strcmp(platform->name, platform_name))
873 continue;
874 }
2610ab77
SW		 875
876 rtd->platform = platform;
877 goto out;
02a06d30
BS		 878 }
879
f0fba2ad
LG		 880 dev_dbg(card->dev, "platform %s not registered\n",
881 dai_link->platform_name);
882 return 0;
883
884out:
885 /* mark rtd as complete if we found all 4 of our client devices */
886 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
887 rtd->complete = 1;
888 card->num_rtd++;
889 }
890 return 1;
891}
892
589c3563
JN		 893static void soc_remove_codec(struct snd_soc_codec *codec)
894{
895 int err;
896
897 if (codec->driver->remove) {
898 err = codec->driver->remove(codec);
899 if (err < 0)
900 dev_err(codec->dev,
901 "asoc: failed to remove %s: %d\n",
902 codec->name, err);
903 }
904
905 /* Make sure all DAPM widgets are freed */
906 snd_soc_dapm_free(&codec->dapm);
907
908 soc_cleanup_codec_debugfs(codec);
909 codec->probed = 0;
910 list_del(&codec->card_list);
911 module_put(codec->dev->driver->owner);
912}
913
0168bf0d 914static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
f0fba2ad
LG		 915{
916 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
917 struct snd_soc_codec *codec = rtd->codec;
918 struct snd_soc_platform *platform = rtd->platform;
919 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
920 int err;
921
922 /* unregister the rtd device */
923 if (rtd->dev_registered) {
36ae1a96
MB		 924 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
925 device_remove_file(rtd->dev, &dev_attr_codec_reg);
926 device_unregister(rtd->dev);
f0fba2ad
LG		 927 rtd->dev_registered = 0;
928 }
929
930 /* remove the CODEC DAI */
0168bf0d
LG		 931 if (codec_dai && codec_dai->probed &&
932 codec_dai->driver->remove_order == order) {
f0fba2ad
LG		 933 if (codec_dai->driver->remove) {
934 err = codec_dai->driver->remove(codec_dai);
935 if (err < 0)
0837fc62
FE		 936 pr_err("asoc: failed to remove %s: %d\n",
937 codec_dai->name, err);
6b05eda6 938 }
f0fba2ad
LG		 939 codec_dai->probed = 0;
940 list_del(&codec_dai->card_list);
941 }
6b05eda6 942
f0fba2ad 943 /* remove the platform */
0168bf0d
LG		 944 if (platform && platform->probed &&
945 platform->driver->remove_order == order) {
f0fba2ad
LG		 946 if (platform->driver->remove) {
947 err = platform->driver->remove(platform);
948 if (err < 0)
0837fc62
FE		 949 pr_err("asoc: failed to remove %s: %d\n",
950 platform->name, err);
f0fba2ad 951 }
675c496b
LG		 952
953 /* Make sure all DAPM widgets are freed */
954 snd_soc_dapm_free(&platform->dapm);
955
731f1ab2 956 soc_cleanup_platform_debugfs(platform);
f0fba2ad
LG		 957 platform->probed = 0;
958 list_del(&platform->card_list);
959 module_put(platform->dev->driver->owner);
960 }
435c5e25 961
f0fba2ad 962 /* remove the CODEC */
0168bf0d
LG		 963 if (codec && codec->probed &&
964 codec->driver->remove_order == order)
589c3563 965 soc_remove_codec(codec);
db2a4165 966
f0fba2ad 967 /* remove the cpu_dai */
0168bf0d
LG		 968 if (cpu_dai && cpu_dai->probed &&
969 cpu_dai->driver->remove_order == order) {
f0fba2ad
LG		 970 if (cpu_dai->driver->remove) {
971 err = cpu_dai->driver->remove(cpu_dai);
972 if (err < 0)
0837fc62
FE		 973 pr_err("asoc: failed to remove %s: %d\n",
974 cpu_dai->name, err);
db2a4165 975 }
f0fba2ad
LG		 976 cpu_dai->probed = 0;
977 list_del(&cpu_dai->card_list);
978 module_put(cpu_dai->dev->driver->owner);
db2a4165 979 }
f0fba2ad 980}
db2a4165 981
0671fd8e
KM		 982static void soc_remove_dai_links(struct snd_soc_card *card)
983{
0168bf0d 984 int dai, order;
0671fd8e 985
0168bf0d
LG		 986 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
987 order++) {
988 for (dai = 0; dai < card->num_rtd; dai++)
989 soc_remove_dai_link(card, dai, order);
990 }
0671fd8e
KM		 991 card->num_rtd = 0;
992}
993
ead9b919
JN		 994static void soc_set_name_prefix(struct snd_soc_card *card,
995 struct snd_soc_codec *codec)
996{
997 int i;
998
ff819b83 999 if (card->codec_conf == NULL)
ead9b919
JN		 1000 return;
1001
ff819b83
DP		 1002 for (i = 0; i < card->num_configs; i++) {
1003 struct snd_soc_codec_conf *map = &card->codec_conf[i];
ead9b919
JN		 1004 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1005 codec->name_prefix = map->name_prefix;
1006 break;
1007 }
1008 }
1009}
1010
589c3563
JN		 1011static int soc_probe_codec(struct snd_soc_card *card,
1012 struct snd_soc_codec *codec)
1013{
1014 int ret = 0;
89b95ac0 1015 const struct snd_soc_codec_driver *driver = codec->driver;
888df395 1016 struct snd_soc_dai *dai;
589c3563
JN		 1017
1018 codec->card = card;
1019 codec->dapm.card = card;
1020 soc_set_name_prefix(card, codec);
1021
70d29331
JN		 1022 if (!try_module_get(codec->dev->driver->owner))
1023 return -ENODEV;
1024
d5d1e0be
LPC		 1025 soc_init_codec_debugfs(codec);
1026
77530150
LPC		 1027 if (driver->dapm_widgets)
1028 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1029 driver->num_dapm_widgets);
1030
888df395
MB		 1031 /* Create DAPM widgets for each DAI stream */
1032 list_for_each_entry(dai, &dai_list, list) {
1033 if (dai->dev != codec->dev)
1034 continue;
1035
1036 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1037 }
1038
33c5f969
MB		 1039 codec->dapm.idle_bias_off = driver->idle_bias_off;
1040
89b95ac0
MB		 1041 if (driver->probe) {
1042 ret = driver->probe(codec);
589c3563
JN		 1043 if (ret < 0) {
1044 dev_err(codec->dev,
1045 "asoc: failed to probe CODEC %s: %d\n",
1046 codec->name, ret);
70d29331 1047 goto err_probe;
589c3563
JN		 1048 }
1049 }
1050
b7af1daf 1051 if (driver->controls)
022658be 1052 snd_soc_add_codec_controls(codec, driver->controls,
b7af1daf 1053 driver->num_controls);
89b95ac0
MB		 1054 if (driver->dapm_routes)
1055 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1056 driver->num_dapm_routes);
1057
589c3563
JN		 1058 /* mark codec as probed and add to card codec list */
1059 codec->probed = 1;
1060 list_add(&codec->card_list, &card->codec_dev_list);
7be31be8 1061 list_add(&codec->dapm.list, &card->dapm_list);
589c3563 1062
70d29331
JN		 1063 return 0;
1064
1065err_probe:
d5d1e0be 1066 soc_cleanup_codec_debugfs(codec);
70d29331
JN		 1067 module_put(codec->dev->driver->owner);
1068
589c3563
JN		 1069 return ret;
1070}
1071
956245e9
LG		 1072static int soc_probe_platform(struct snd_soc_card *card,
1073 struct snd_soc_platform *platform)
1074{
1075 int ret = 0;
1076 const struct snd_soc_platform_driver *driver = platform->driver;
1077
1078 platform->card = card;
b7950641 1079 platform->dapm.card = card;
956245e9
LG		 1080
1081 if (!try_module_get(platform->dev->driver->owner))
1082 return -ENODEV;
1083
731f1ab2
SG		 1084 soc_init_platform_debugfs(platform);
1085
cb2cf612
LG		 1086 if (driver->dapm_widgets)
1087 snd_soc_dapm_new_controls(&platform->dapm,
1088 driver->dapm_widgets, driver->num_dapm_widgets);
1089
3fec6b6d
SW		 1090 platform->dapm.idle_bias_off = 1;
1091
956245e9
LG		 1092 if (driver->probe) {
1093 ret = driver->probe(platform);
1094 if (ret < 0) {
1095 dev_err(platform->dev,
1096 "asoc: failed to probe platform %s: %d\n",
1097 platform->name, ret);
1098 goto err_probe;
1099 }
1100 }
1101
cb2cf612
LG		 1102 if (driver->controls)
1103 snd_soc_add_platform_controls(platform, driver->controls,
1104 driver->num_controls);
1105 if (driver->dapm_routes)
1106 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1107 driver->num_dapm_routes);
1108
956245e9
LG		 1109 /* mark platform as probed and add to card platform list */
1110 platform->probed = 1;
1111 list_add(&platform->card_list, &card->platform_dev_list);
b7950641 1112 list_add(&platform->dapm.list, &card->dapm_list);
956245e9
LG		 1113
1114 return 0;
1115
1116err_probe:
02db1103 1117 soc_cleanup_platform_debugfs(platform);
956245e9
LG		 1118 module_put(platform->dev->driver->owner);
1119
1120 return ret;
1121}
1122
36ae1a96
MB		 1123static void rtd_release(struct device *dev)
1124{
1125 kfree(dev);
1126}
f0fba2ad 1127
589c3563
JN		 1128static int soc_post_component_init(struct snd_soc_card *card,
1129 struct snd_soc_codec *codec,
1130 int num, int dailess)
1131{
1132 struct snd_soc_dai_link *dai_link = NULL;
1133 struct snd_soc_aux_dev *aux_dev = NULL;
1134 struct snd_soc_pcm_runtime *rtd;
1135 const char *temp, *name;
1136 int ret = 0;
1137
1138 if (!dailess) {
1139 dai_link = &card->dai_link[num];
1140 rtd = &card->rtd[num];
1141 name = dai_link->name;
1142 } else {
1143 aux_dev = &card->aux_dev[num];
1144 rtd = &card->rtd_aux[num];
1145 name = aux_dev->name;
1146 }
0962bb21 1147 rtd->card = card;
589c3563 1148
4b1cfcb4
MB		 1149 /* Make sure all DAPM widgets are instantiated */
1150 snd_soc_dapm_new_widgets(&codec->dapm);
1151
589c3563
JN		 1152 /* machine controls, routes and widgets are not prefixed */
1153 temp = codec->name_prefix;
1154 codec->name_prefix = NULL;
1155
1156 /* do machine specific initialization */
1157 if (!dailess && dai_link->init)
1158 ret = dai_link->init(rtd);
1159 else if (dailess && aux_dev->init)
1160 ret = aux_dev->init(&codec->dapm);
1161 if (ret < 0) {
1162 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1163 return ret;
1164 }
1165 codec->name_prefix = temp;
1166
589c3563
JN		 1167 /* register the rtd device */
1168 rtd->codec = codec;
36ae1a96
MB		 1169
1170 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1171 if (!rtd->dev)
1172 return -ENOMEM;
1173 device_initialize(rtd->dev);
1174 rtd->dev->parent = card->dev;
1175 rtd->dev->release = rtd_release;
1176 rtd->dev->init_name = name;
1177 dev_set_drvdata(rtd->dev, rtd);
b8c0dab9 1178 mutex_init(&rtd->pcm_mutex);
36ae1a96 1179 ret = device_add(rtd->dev);
589c3563
JN		 1180 if (ret < 0) {
1181 dev_err(card->dev,
1182 "asoc: failed to register runtime device: %d\n", ret);
1183 return ret;
1184 }
1185 rtd->dev_registered = 1;
1186
1187 /* add DAPM sysfs entries for this codec */
36ae1a96 1188 ret = snd_soc_dapm_sys_add(rtd->dev);
589c3563
JN		 1189 if (ret < 0)
1190 dev_err(codec->dev,
1191 "asoc: failed to add codec dapm sysfs entries: %d\n",
1192 ret);
1193
1194 /* add codec sysfs entries */
36ae1a96 1195 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
589c3563
JN		 1196 if (ret < 0)
1197 dev_err(codec->dev,
1198 "asoc: failed to add codec sysfs files: %d\n", ret);
1199
1200 return 0;
1201}
1202
0168bf0d 1203static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
f0fba2ad
LG		 1204{
1205 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1206 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1207 struct snd_soc_codec *codec = rtd->codec;
1208 struct snd_soc_platform *platform = rtd->platform;
1209 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1210 int ret;
1211
0168bf0d
LG		 1212 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1213 card->name, num, order);
f0fba2ad
LG		 1214
1215 /* config components */
1216 codec_dai->codec = codec;
f0fba2ad 1217 cpu_dai->platform = platform;
f0fba2ad
LG		 1218 codec_dai->card = card;
1219 cpu_dai->card = card;
1220
1221 /* set default power off timeout */
1222 rtd->pmdown_time = pmdown_time;
1223
1224 /* probe the cpu_dai */
0168bf0d
LG		 1225 if (!cpu_dai->probed &&
1226 cpu_dai->driver->probe_order == order) {
61b61e3c
LG		 1227 if (!try_module_get(cpu_dai->dev->driver->owner))
1228 return -ENODEV;
1229
f0fba2ad
LG		 1230 if (cpu_dai->driver->probe) {
1231 ret = cpu_dai->driver->probe(cpu_dai);
1232 if (ret < 0) {
0837fc62
FE		 1233 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1234 cpu_dai->name, ret);
61b61e3c 1235 module_put(cpu_dai->dev->driver->owner);
f0fba2ad
LG		 1236 return ret;
1237 }
1238 }
1239 cpu_dai->probed = 1;
1c8371d6 1240 /* mark cpu_dai as probed and add to card dai list */
f0fba2ad 1241 list_add(&cpu_dai->card_list, &card->dai_dev_list);
db2a4165
FM		 1242 }
1243
f0fba2ad 1244 /* probe the CODEC */
0168bf0d
LG		 1245 if (!codec->probed &&
1246 codec->driver->probe_order == order) {
589c3563
JN		 1247 ret = soc_probe_codec(card, codec);
1248 if (ret < 0)
1249 return ret;
db2a4165
FM		 1250 }
1251
f0fba2ad 1252 /* probe the platform */
0168bf0d
LG		 1253 if (!platform->probed &&
1254 platform->driver->probe_order == order) {
956245e9
LG		 1255 ret = soc_probe_platform(card, platform);
1256 if (ret < 0)
1257 return ret;
f0fba2ad 1258 }
6ed25978 1259
f0fba2ad 1260 /* probe the CODEC DAI */
0168bf0d 1261 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
f0fba2ad
LG		 1262 if (codec_dai->driver->probe) {
1263 ret = codec_dai->driver->probe(codec_dai);
fe3e78e0 1264 if (ret < 0) {
0837fc62
FE		 1265 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1266 codec_dai->name, ret);
f0fba2ad 1267 return ret;
fe3e78e0
MB		 1268 }
1269 }
f0fba2ad 1270
1c8371d6 1271 /* mark codec_dai as probed and add to card dai list */
f0fba2ad
LG		 1272 codec_dai->probed = 1;
1273 list_add(&codec_dai->card_list, &card->dai_dev_list);
fe3e78e0
MB		 1274 }
1275
0168bf0d
LG		 1276 /* complete DAI probe during last probe */
1277 if (order != SND_SOC_COMP_ORDER_LAST)
1278 return 0;
1279
589c3563
JN		 1280 ret = soc_post_component_init(card, codec, num, 0);
1281 if (ret)
f0fba2ad 1282 return ret;
fe3e78e0 1283
36ae1a96 1284 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
f0fba2ad 1285 if (ret < 0)
0837fc62 1286 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
f0fba2ad 1287
f0fba2ad
LG		 1288 /* create the pcm */
1289 ret = soc_new_pcm(rtd, num);
1290 if (ret < 0) {
0837fc62
FE		 1291 pr_err("asoc: can't create pcm %s :%d\n",
1292 dai_link->stream_name, ret);
f0fba2ad
LG		 1293 return ret;
1294 }
1295
1296 /* add platform data for AC97 devices */
1297 if (rtd->codec_dai->driver->ac97_control)
1298 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1299
1300 return 0;
1301}
1302
fe3e78e0 1303#ifdef CONFIG_SND_SOC_AC97_BUS
f0fba2ad
LG		 1304static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1305{
1306 int ret;
1307
fe3e78e0
MB		 1308 /* Only instantiate AC97 if not already done by the adaptor
1309 * for the generic AC97 subsystem.
1310 */
f0fba2ad 1311 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
0562f788
MW		 1312 /*
1313 * It is possible that the AC97 device is already registered to
1314 * the device subsystem. This happens when the device is created
1315 * via snd_ac97_mixer(). Currently only SoC codec that does so
1316 * is the generic AC97 glue but others migh emerge.
1317 *
1318 * In those cases we don't try to register the device again.
1319 */
1320 if (!rtd->codec->ac97_created)
1321 return 0;
f0fba2ad
LG		 1322
1323 ret = soc_ac97_dev_register(rtd->codec);
fe3e78e0 1324 if (ret < 0) {
0837fc62 1325 pr_err("asoc: AC97 device register failed:%d\n", ret);
f0fba2ad 1326 return ret;
fe3e78e0 1327 }
f0fba2ad
LG		 1328
1329 rtd->codec->ac97_registered = 1;
fe3e78e0 1330 }
f0fba2ad
LG		 1331 return 0;
1332}
1333
1334static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1335{
1336 if (codec->ac97_registered) {
1337 soc_ac97_dev_unregister(codec);
1338 codec->ac97_registered = 0;
1339 }
1340}
fe3e78e0
MB		 1341#endif
1342
2eea392d
JN		 1343static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1344{
1345 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
2eea392d 1346 struct snd_soc_codec *codec;
676ad98a 1347 int ret = -ENODEV;
2eea392d
JN		 1348
1349 /* find CODEC from registered CODECs*/
1350 list_for_each_entry(codec, &codec_list, list) {
1351 if (!strcmp(codec->name, aux_dev->codec_name)) {
1352 if (codec->probed) {
1353 dev_err(codec->dev,
1354 "asoc: codec already probed");
1355 ret = -EBUSY;
1356 goto out;
1357 }
676ad98a 1358 goto found;
2eea392d
JN		 1359 }
1360 }
676ad98a
JN		 1361 /* codec not found */
1362 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1363 goto out;
2eea392d 1364
676ad98a 1365found:
589c3563 1366 ret = soc_probe_codec(card, codec);
2eea392d 1367 if (ret < 0)
589c3563 1368 return ret;
2eea392d 1369
589c3563 1370 ret = soc_post_component_init(card, codec, num, 1);
2eea392d
JN		 1371
1372out:
1373 return ret;
1374}
1375
1376static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1377{
1378 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1379 struct snd_soc_codec *codec = rtd->codec;
2eea392d
JN		 1380
1381 /* unregister the rtd device */
1382 if (rtd->dev_registered) {
36ae1a96
MB		 1383 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1384 device_del(rtd->dev);
2eea392d
JN		 1385 rtd->dev_registered = 0;
1386 }
1387
589c3563
JN		 1388 if (codec && codec->probed)
1389 soc_remove_codec(codec);
2eea392d
JN		 1390}
1391
fdf0f54d
DP		 1392static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1393 enum snd_soc_compress_type compress_type)
1394{
1395 int ret;
1396
1397 if (codec->cache_init)
1398 return 0;
1399
1400 /* override the compress_type if necessary */
1401 if (compress_type && codec->compress_type != compress_type)
1402 codec->compress_type = compress_type;
fdf0f54d
DP		 1403 ret = snd_soc_cache_init(codec);
1404 if (ret < 0) {
1405 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1406 ret);
1407 return ret;
1408 }
1409 codec->cache_init = 1;
1410 return 0;
1411}
1412
f0fba2ad
LG		 1413static void snd_soc_instantiate_card(struct snd_soc_card *card)
1414{
fdf0f54d
DP		 1415 struct snd_soc_codec *codec;
1416 struct snd_soc_codec_conf *codec_conf;
1417 enum snd_soc_compress_type compress_type;
75d9ac46 1418 struct snd_soc_dai_link *dai_link;
0168bf0d 1419 int ret, i, order;
fe3e78e0 1420
f0fba2ad 1421 mutex_lock(&card->mutex);
dbe21408 1422
f0fba2ad
LG		 1423 if (card->instantiated) {
1424 mutex_unlock(&card->mutex);
1425 return;
1426 }
fe3e78e0 1427
f0fba2ad
LG		 1428 /* bind DAIs */
1429 for (i = 0; i < card->num_links; i++)
1430 soc_bind_dai_link(card, i);
fe3e78e0 1431
f0fba2ad
LG		 1432 /* bind completed ? */
1433 if (card->num_rtd != card->num_links) {
1434 mutex_unlock(&card->mutex);
1435 return;
1436 }
435c5e25 1437
fdf0f54d
DP		 1438 /* initialize the register cache for each available codec */
1439 list_for_each_entry(codec, &codec_list, list) {
1440 if (codec->cache_init)
1441 continue;
861f2faf
DP		 1442 /* by default we don't override the compress_type */
1443 compress_type = 0;
fdf0f54d
DP		 1444 /* check to see if we need to override the compress_type */
1445 for (i = 0; i < card->num_configs; ++i) {
1446 codec_conf = &card->codec_conf[i];
1447 if (!strcmp(codec->name, codec_conf->dev_name)) {
1448 compress_type = codec_conf->compress_type;
1449 if (compress_type && compress_type
1450 != codec->compress_type)
1451 break;
1452 }
1453 }
fdf0f54d
DP		 1454 ret = snd_soc_init_codec_cache(codec, compress_type);
1455 if (ret < 0) {
1456 mutex_unlock(&card->mutex);
1457 return;
1458 }
1459 }
1460
f0fba2ad
LG		 1461 /* card bind complete so register a sound card */
1462 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1463 card->owner, 0, &card->snd_card);
1464 if (ret < 0) {
0837fc62
FE		 1465 pr_err("asoc: can't create sound card for card %s: %d\n",
1466 card->name, ret);
f0fba2ad
LG		 1467 mutex_unlock(&card->mutex);
1468 return;
1469 }
1470 card->snd_card->dev = card->dev;
1471
e37a4970
MB		 1472 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1473 card->dapm.dev = card->dev;
1474 card->dapm.card = card;
1475 list_add(&card->dapm.list, &card->dapm_list);
1476
d5d1e0be
LPC		 1477#ifdef CONFIG_DEBUG_FS
1478 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1479#endif
1480
88ee1c61 1481#ifdef CONFIG_PM_SLEEP
f0fba2ad
LG		 1482 /* deferred resume work */
1483 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1484#endif
db2a4165 1485
9a841ebb
MB		 1486 if (card->dapm_widgets)
1487 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1488 card->num_dapm_widgets);
1489
f0fba2ad
LG		 1490 /* initialise the sound card only once */
1491 if (card->probe) {
e7361ec4 1492 ret = card->probe(card);
f0fba2ad
LG		 1493 if (ret < 0)
1494 goto card_probe_error;
1495 }
fe3e78e0 1496
0168bf0d
LG		 1497 /* early DAI link probe */
1498 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1499 order++) {
1500 for (i = 0; i < card->num_links; i++) {
1501 ret = soc_probe_dai_link(card, i, order);
1502 if (ret < 0) {
1503 pr_err("asoc: failed to instantiate card %s: %d\n",
321de0d0 1504 card->name, ret);
0168bf0d
LG		 1505 goto probe_dai_err;
1506 }
f0fba2ad
LG		 1507 }
1508 }
db2a4165 1509
2eea392d
JN		 1510 for (i = 0; i < card->num_aux_devs; i++) {
1511 ret = soc_probe_aux_dev(card, i);
1512 if (ret < 0) {
1513 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1514 card->name, ret);
1515 goto probe_aux_dev_err;
1516 }
1517 }
1518
888df395
MB		 1519 snd_soc_dapm_link_dai_widgets(card);
1520
b7af1daf 1521 if (card->controls)
022658be 1522 snd_soc_add_card_controls(card, card->controls, card->num_controls);
b7af1daf 1523
b8ad29de
MB		 1524 if (card->dapm_routes)
1525 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1526 card->num_dapm_routes);
1527
b90d2f90
MB		 1528 snd_soc_dapm_new_widgets(&card->dapm);
1529
75d9ac46
MB		 1530 for (i = 0; i < card->num_links; i++) {
1531 dai_link = &card->dai_link[i];
1532
1533 if (dai_link->dai_fmt) {
1534 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1535 dai_link->dai_fmt);
5e4ba569 1536 if (ret != 0 && ret != -ENOTSUPP)
75d9ac46
MB		 1537 dev_warn(card->rtd[i].codec_dai->dev,
1538 "Failed to set DAI format: %d\n",
1539 ret);
1540
1541 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1542 dai_link->dai_fmt);
5e4ba569 1543 if (ret != 0 && ret != -ENOTSUPP)
75d9ac46
MB		 1544 dev_warn(card->rtd[i].cpu_dai->dev,
1545 "Failed to set DAI format: %d\n",
1546 ret);
1547 }
1548 }
1549
f0fba2ad 1550 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
f0fba2ad 1551 "%s", card->name);
22de71ba
LG		 1552 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1553 "%s", card->long_name ? card->long_name : card->name);
f0e8ed85
MB		 1554 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1555 "%s", card->driver_name ? card->driver_name : card->name);
1556 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1557 switch (card->snd_card->driver[i]) {
1558 case '_':
1559 case '-':
1560 case '\0':
1561 break;
1562 default:
1563 if (!isalnum(card->snd_card->driver[i]))
1564 card->snd_card->driver[i] = '_';
1565 break;
1566 }
1567 }
f0fba2ad 1568
28e9ad92
MB		 1569 if (card->late_probe) {
1570 ret = card->late_probe(card);
1571 if (ret < 0) {
1572 dev_err(card->dev, "%s late_probe() failed: %d\n",
1573 card->name, ret);
1574 goto probe_aux_dev_err;
1575 }
1576 }
1577
2dc00213
MB		 1578 snd_soc_dapm_new_widgets(&card->dapm);
1579
1633281b 1580 if (card->fully_routed)
b05d8dc1 1581 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1633281b
SW		 1582 snd_soc_dapm_auto_nc_codec_pins(codec);
1583
f0fba2ad
LG		 1584 ret = snd_card_register(card->snd_card);
1585 if (ret < 0) {
0837fc62
FE		 1586 pr_err("asoc: failed to register soundcard for %s: %d\n",
1587 card->name, ret);
6b3ed785 1588 goto probe_aux_dev_err;
db2a4165
FM		 1589 }
1590
f0fba2ad
LG		 1591#ifdef CONFIG_SND_SOC_AC97_BUS
1592 /* register any AC97 codecs */
1593 for (i = 0; i < card->num_rtd; i++) {
6b3ed785
AL		 1594 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1595 if (ret < 0) {
0837fc62
FE		 1596 pr_err("asoc: failed to register AC97 %s: %d\n",
1597 card->name, ret);
6b3ed785 1598 while (--i >= 0)
7d8316df 1599 soc_unregister_ac97_dai_link(card->rtd[i].codec);
6b3ed785 1600 goto probe_aux_dev_err;
f0fba2ad 1601 }
6b3ed785 1602 }
f0fba2ad
LG		 1603#endif
1604
1605 card->instantiated = 1;
4f4c0072 1606 snd_soc_dapm_sync(&card->dapm);
f0fba2ad
LG		 1607 mutex_unlock(&card->mutex);
1608 return;
1609
2eea392d
JN		 1610probe_aux_dev_err:
1611 for (i = 0; i < card->num_aux_devs; i++)
1612 soc_remove_aux_dev(card, i);
1613
f0fba2ad 1614probe_dai_err:
0671fd8e 1615 soc_remove_dai_links(card);
f0fba2ad
LG		 1616
1617card_probe_error:
87506549 1618 if (card->remove)
e7361ec4 1619 card->remove(card);
f0fba2ad
LG		 1620
1621 snd_card_free(card->snd_card);
1622
1623 mutex_unlock(&card->mutex);
435c5e25 1624}
db2a4165 1625
435c5e25 1626/*
421f91d2 1627 * Attempt to initialise any uninitialised cards. Must be called with
435c5e25
MB		 1628 * client_mutex.
1629 */
1630static void snd_soc_instantiate_cards(void)
1631{
1632 struct snd_soc_card *card;
1633 list_for_each_entry(card, &card_list, list)
1634 snd_soc_instantiate_card(card);
1635}
1636
1637/* probes a new socdev */
1638static int soc_probe(struct platform_device *pdev)
1639{
f0fba2ad 1640 struct snd_soc_card *card = platform_get_drvdata(pdev);
435c5e25 1641 int ret = 0;
435c5e25 1642
70a7ca34
VK		 1643 /*
1644 * no card, so machine driver should be registering card
1645 * we should not be here in that case so ret error
1646 */
1647 if (!card)
1648 return -EINVAL;
1649
fe4085e8
MB		 1650 dev_warn(&pdev->dev,
1651 "ASoC machine %s should use snd_soc_register_card()\n",
1652 card->name);
1653
435c5e25
MB		 1654 /* Bodge while we unpick instantiation */
1655 card->dev = &pdev->dev;
f0fba2ad 1656
435c5e25
MB		 1657 ret = snd_soc_register_card(card);
1658 if (ret != 0) {
1659 dev_err(&pdev->dev, "Failed to register card\n");
1660 return ret;
1661 }
1662
1663 return 0;
db2a4165
FM		 1664}
1665
b0e26485 1666static int soc_cleanup_card_resources(struct snd_soc_card *card)
db2a4165
FM		 1667{
1668 int i;
db2a4165 1669
b0e26485
VK		 1670 /* make sure any delayed work runs */
1671 for (i = 0; i < card->num_rtd; i++) {
1672 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1673 flush_delayed_work_sync(&rtd->delayed_work);
1674 }
914dc182 1675
b0e26485
VK		 1676 /* remove auxiliary devices */
1677 for (i = 0; i < card->num_aux_devs; i++)
1678 soc_remove_aux_dev(card, i);
db2a4165 1679
b0e26485 1680 /* remove and free each DAI */
0671fd8e 1681 soc_remove_dai_links(card);
2eea392d 1682
b0e26485 1683 soc_cleanup_card_debugfs(card);
f0fba2ad 1684
b0e26485
VK		 1685 /* remove the card */
1686 if (card->remove)
e7361ec4 1687 card->remove(card);
a6052154 1688
0aaae527
LPC		 1689 snd_soc_dapm_free(&card->dapm);
1690
b0e26485
VK		 1691 snd_card_free(card->snd_card);
1692 return 0;
1693
1694}
1695
1696/* removes a socdev */
1697static int soc_remove(struct platform_device *pdev)
1698{
1699 struct snd_soc_card *card = platform_get_drvdata(pdev);
db2a4165 1700
c5af3a2e 1701 snd_soc_unregister_card(card);
db2a4165
FM		 1702 return 0;
1703}
1704
6f8ab4ac 1705int snd_soc_poweroff(struct device *dev)
51737470 1706{
6f8ab4ac 1707 struct snd_soc_card *card = dev_get_drvdata(dev);
f0fba2ad 1708 int i;
51737470
MB		 1709
1710 if (!card->instantiated)
416356fc 1711 return 0;
51737470
MB		 1712
1713 /* Flush out pmdown_time work - we actually do want to run it
1714 * now, we're shutting down so no imminent restart. */
f0fba2ad
LG		 1715 for (i = 0; i < card->num_rtd; i++) {
1716 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
5b84ba26 1717 flush_delayed_work_sync(&rtd->delayed_work);
f0fba2ad 1718 }
51737470 1719
f0fba2ad 1720 snd_soc_dapm_shutdown(card);
416356fc
MB		 1721
1722 return 0;
51737470 1723}
6f8ab4ac 1724EXPORT_SYMBOL_GPL(snd_soc_poweroff);
51737470 1725
6f8ab4ac 1726const struct dev_pm_ops snd_soc_pm_ops = {
b1dd5897
VK		 1727 .suspend = snd_soc_suspend,
1728 .resume = snd_soc_resume,
1729 .freeze = snd_soc_suspend,
1730 .thaw = snd_soc_resume,
6f8ab4ac 1731 .poweroff = snd_soc_poweroff,
b1dd5897 1732 .restore = snd_soc_resume,
416356fc 1733};
deb2607e 1734EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
416356fc 1735
db2a4165
FM		 1736/* ASoC platform driver */
1737static struct platform_driver soc_driver = {
1738 .driver = {
1739 .name = "soc-audio",
8b45a209 1740 .owner = THIS_MODULE,
6f8ab4ac 1741 .pm = &snd_soc_pm_ops,
db2a4165
FM		 1742 },
1743 .probe = soc_probe,
1744 .remove = soc_remove,
db2a4165
FM		 1745};
1746
096e49d5
MB		 1747/**
1748 * snd_soc_codec_volatile_register: Report if a register is volatile.
1749 *
1750 * @codec: CODEC to query.
1751 * @reg: Register to query.
1752 *
1753 * Boolean function indiciating if a CODEC register is volatile.
1754 */
181e055e
MB		 1755int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1756 unsigned int reg)
096e49d5 1757{
1500b7b5
DP		 1758 if (codec->volatile_register)
1759 return codec->volatile_register(codec, reg);
096e49d5
MB		 1760 else
1761 return 0;
1762}
1763EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1764
239c9706
DP		 1765/**
1766 * snd_soc_codec_readable_register: Report if a register is readable.
1767 *
1768 * @codec: CODEC to query.
1769 * @reg: Register to query.
1770 *
1771 * Boolean function indicating if a CODEC register is readable.
1772 */
1773int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1774 unsigned int reg)
1775{
1776 if (codec->readable_register)
1777 return codec->readable_register(codec, reg);
1778 else
63fa0a28 1779 return 1;
239c9706
DP		 1780}
1781EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1782
1783/**
1784 * snd_soc_codec_writable_register: Report if a register is writable.
1785 *
1786 * @codec: CODEC to query.
1787 * @reg: Register to query.
1788 *
1789 * Boolean function indicating if a CODEC register is writable.
1790 */
1791int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1792 unsigned int reg)
1793{
1794 if (codec->writable_register)
1795 return codec->writable_register(codec, reg);
1796 else
63fa0a28 1797 return 1;
239c9706
DP		 1798}
1799EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1800
f1442bc1
LG		 1801int snd_soc_platform_read(struct snd_soc_platform *platform,
1802 unsigned int reg)
1803{
1804 unsigned int ret;
1805
1806 if (!platform->driver->read) {
1807 dev_err(platform->dev, "platform has no read back\n");
1808 return -1;
1809 }
1810
1811 ret = platform->driver->read(platform, reg);
1812 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
a82ce2ae 1813 trace_snd_soc_preg_read(platform, reg, ret);
f1442bc1
LG		 1814
1815 return ret;
1816}
1817EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1818
1819int snd_soc_platform_write(struct snd_soc_platform *platform,
1820 unsigned int reg, unsigned int val)
1821{
1822 if (!platform->driver->write) {
1823 dev_err(platform->dev, "platform has no write back\n");
1824 return -1;
1825 }
1826
1827 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
a82ce2ae 1828 trace_snd_soc_preg_write(platform, reg, val);
f1442bc1
LG		 1829 return platform->driver->write(platform, reg, val);
1830}
1831EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1832
db2a4165
FM		 1833/**
1834 * snd_soc_new_ac97_codec - initailise AC97 device
1835 * @codec: audio codec
1836 * @ops: AC97 bus operations
1837 * @num: AC97 codec number
1838 *
1839 * Initialises AC97 codec resources for use by ad-hoc devices only.
1840 */
1841int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1842 struct snd_ac97_bus_ops *ops, int num)
1843{
1844 mutex_lock(&codec->mutex);
1845
1846 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1847 if (codec->ac97 == NULL) {
1848 mutex_unlock(&codec->mutex);
1849 return -ENOMEM;
1850 }
1851
1852 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1853 if (codec->ac97->bus == NULL) {
1854 kfree(codec->ac97);
1855 codec->ac97 = NULL;
1856 mutex_unlock(&codec->mutex);
1857 return -ENOMEM;
1858 }
1859
1860 codec->ac97->bus->ops = ops;
1861 codec->ac97->num = num;
0562f788
MW		 1862
1863 /*
1864 * Mark the AC97 device to be created by us. This way we ensure that the
1865 * device will be registered with the device subsystem later on.
1866 */
1867 codec->ac97_created = 1;
1868
db2a4165
FM		 1869 mutex_unlock(&codec->mutex);
1870 return 0;
1871}
1872EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1873
1874/**
1875 * snd_soc_free_ac97_codec - free AC97 codec device
1876 * @codec: audio codec
1877 *
1878 * Frees AC97 codec device resources.
1879 */
1880void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1881{
1882 mutex_lock(&codec->mutex);
f0fba2ad
LG		 1883#ifdef CONFIG_SND_SOC_AC97_BUS
1884 soc_unregister_ac97_dai_link(codec);
1885#endif
db2a4165
FM		 1886 kfree(codec->ac97->bus);
1887 kfree(codec->ac97);
1888 codec->ac97 = NULL;
0562f788 1889 codec->ac97_created = 0;
db2a4165
FM		 1890 mutex_unlock(&codec->mutex);
1891}
1892EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1893
c3753707
MB		 1894unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1895{
1896 unsigned int ret;
1897
c3acec26 1898 ret = codec->read(codec, reg);
c3753707 1899 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
a8b1d34f 1900 trace_snd_soc_reg_read(codec, reg, ret);
c3753707
MB		 1901
1902 return ret;
1903}
1904EXPORT_SYMBOL_GPL(snd_soc_read);
1905
1906unsigned int snd_soc_write(struct snd_soc_codec *codec,
1907 unsigned int reg, unsigned int val)
1908{
1909 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
a8b1d34f 1910 trace_snd_soc_reg_write(codec, reg, val);
c3acec26 1911 return codec->write(codec, reg, val);
c3753707
MB		 1912}
1913EXPORT_SYMBOL_GPL(snd_soc_write);
1914
5fb609d4
DP		 1915unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1916 unsigned int reg, const void *data, size_t len)
1917{
1918 return codec->bulk_write_raw(codec, reg, data, len);
1919}
1920EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1921
db2a4165
FM		 1922/**
1923 * snd_soc_update_bits - update codec register bits
1924 * @codec: audio codec
1925 * @reg: codec register
1926 * @mask: register mask
1927 * @value: new value
1928 *
1929 * Writes new register value.
1930 *
180c329d 1931 * Returns 1 for change, 0 for no change, or negative error code.
db2a4165
FM		 1932 */
1933int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 1934 unsigned int mask, unsigned int value)
db2a4165 1935{
8a713da8 1936 bool change;
46f5822f 1937 unsigned int old, new;
180c329d
TT		 1938 int ret;
1939
8a713da8
MB		 1940 if (codec->using_regmap) {
1941 ret = regmap_update_bits_check(codec->control_data, reg,
1942 mask, value, &change);
1943 } else {
1944 ret = snd_soc_read(codec, reg);
180c329d
TT		 1945 if (ret < 0)
1946 return ret;
8a713da8
MB		 1947
1948 old = ret;
1949 new = (old & ~mask) | (value & mask);
1950 change = old != new;
1951 if (change)
1952 ret = snd_soc_write(codec, reg, new);
180c329d 1953 }
db2a4165 1954
8a713da8
MB		 1955 if (ret < 0)
1956 return ret;
1957
db2a4165
FM		 1958 return change;
1959}
1960EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1961
6c508c62
EN		 1962/**
1963 * snd_soc_update_bits_locked - update codec register bits
1964 * @codec: audio codec
1965 * @reg: codec register
1966 * @mask: register mask
1967 * @value: new value
1968 *
1969 * Writes new register value, and takes the codec mutex.
1970 *
1971 * Returns 1 for change else 0.
1972 */
dd1b3d53
MB		 1973int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1974 unsigned short reg, unsigned int mask,
1975 unsigned int value)
6c508c62
EN		 1976{
1977 int change;
1978
1979 mutex_lock(&codec->mutex);
1980 change = snd_soc_update_bits(codec, reg, mask, value);
1981 mutex_unlock(&codec->mutex);
1982
1983 return change;
1984}
dd1b3d53 1985EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
6c508c62 1986
db2a4165
FM		 1987/**
1988 * snd_soc_test_bits - test register for change
1989 * @codec: audio codec
1990 * @reg: codec register
1991 * @mask: register mask
1992 * @value: new value
1993 *
1994 * Tests a register with a new value and checks if the new value is
1995 * different from the old value.
1996 *
1997 * Returns 1 for change else 0.
1998 */
1999int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 2000 unsigned int mask, unsigned int value)
db2a4165
FM		 2001{
2002 int change;
46f5822f 2003 unsigned int old, new;
db2a4165 2004
db2a4165
FM		 2005 old = snd_soc_read(codec, reg);
2006 new = (old & ~mask) | value;
2007 change = old != new;
db2a4165
FM		 2008
2009 return change;
2010}
2011EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2012
db2a4165
FM		 2013/**
2014 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2015 * @substream: the pcm substream
2016 * @hw: the hardware parameters
2017 *
2018 * Sets the substream runtime hardware parameters.
2019 */
2020int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2021 const struct snd_pcm_hardware *hw)
2022{
2023 struct snd_pcm_runtime *runtime = substream->runtime;
2024 runtime->hw.info = hw->info;
2025 runtime->hw.formats = hw->formats;
2026 runtime->hw.period_bytes_min = hw->period_bytes_min;
2027 runtime->hw.period_bytes_max = hw->period_bytes_max;
2028 runtime->hw.periods_min = hw->periods_min;
2029 runtime->hw.periods_max = hw->periods_max;
2030 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2031 runtime->hw.fifo_size = hw->fifo_size;
2032 return 0;
2033}
2034EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2035
2036/**
2037 * snd_soc_cnew - create new control
2038 * @_template: control template
2039 * @data: control private data
ac11a2b3 2040 * @long_name: control long name
efb7ac3f 2041 * @prefix: control name prefix
db2a4165
FM		 2042 *
2043 * Create a new mixer control from a template control.
2044 *
2045 * Returns 0 for success, else error.
2046 */
2047struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
3056557f 2048 void *data, const char *long_name,
efb7ac3f 2049 const char *prefix)
db2a4165
FM		 2050{
2051 struct snd_kcontrol_new template;
efb7ac3f
MB		 2052 struct snd_kcontrol *kcontrol;
2053 char *name = NULL;
2054 int name_len;
db2a4165
FM		 2055
2056 memcpy(&template, _template, sizeof(template));
db2a4165
FM		 2057 template.index = 0;
2058
efb7ac3f
MB		 2059 if (!long_name)
2060 long_name = template.name;
2061
2062 if (prefix) {
2063 name_len = strlen(long_name) + strlen(prefix) + 2;
57cf9d45 2064 name = kmalloc(name_len, GFP_KERNEL);
efb7ac3f
MB		 2065 if (!name)
2066 return NULL;
2067
2068 snprintf(name, name_len, "%s %s", prefix, long_name);
2069
2070 template.name = name;
2071 } else {
2072 template.name = long_name;
2073 }
2074
2075 kcontrol = snd_ctl_new1(&template, data);
2076
2077 kfree(name);
2078
2079 return kcontrol;
db2a4165
FM		 2080}
2081EXPORT_SYMBOL_GPL(snd_soc_cnew);
2082
022658be
LG		 2083static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2084 const struct snd_kcontrol_new *controls, int num_controls,
2085 const char *prefix, void *data)
2086{
2087 int err, i;
2088
2089 for (i = 0; i < num_controls; i++) {
2090 const struct snd_kcontrol_new *control = &controls[i];
2091 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2092 control->name, prefix));
2093 if (err < 0) {
2094 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2095 return err;
2096 }
2097 }
2098
2099 return 0;
2100}
2101
3e8e1952 2102/**
022658be
LG		 2103 * snd_soc_add_codec_controls - add an array of controls to a codec.
2104 * Convenience function to add a list of controls. Many codecs were
3e8e1952
IM		 2105 * duplicating this code.
2106 *
2107 * @codec: codec to add controls to
2108 * @controls: array of controls to add
2109 * @num_controls: number of elements in the array
2110 *
2111 * Return 0 for success, else error.
2112 */
022658be 2113int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
3e8e1952
IM		 2114 const struct snd_kcontrol_new *controls, int num_controls)
2115{
f0fba2ad 2116 struct snd_card *card = codec->card->snd_card;
3e8e1952 2117
022658be
LG		 2118 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2119 codec->name_prefix, codec);
3e8e1952 2120}
022658be 2121EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
3e8e1952 2122
a491a5c8
LG		 2123/**
2124 * snd_soc_add_platform_controls - add an array of controls to a platform.
022658be 2125 * Convenience function to add a list of controls.
a491a5c8
LG		 2126 *
2127 * @platform: platform to add controls to
2128 * @controls: array of controls to add
2129 * @num_controls: number of elements in the array
2130 *
2131 * Return 0 for success, else error.
2132 */
2133int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2134 const struct snd_kcontrol_new *controls, int num_controls)
2135{
2136 struct snd_card *card = platform->card->snd_card;
a491a5c8 2137
022658be
LG		 2138 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2139 NULL, platform);
a491a5c8
LG		 2140}
2141EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2142
022658be
LG		 2143/**
2144 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2145 * Convenience function to add a list of controls.
2146 *
2147 * @soc_card: SoC card to add controls to
2148 * @controls: array of controls to add
2149 * @num_controls: number of elements in the array
2150 *
2151 * Return 0 for success, else error.
2152 */
2153int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2154 const struct snd_kcontrol_new *controls, int num_controls)
2155{
2156 struct snd_card *card = soc_card->snd_card;
2157
2158 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2159 NULL, soc_card);
2160}
2161EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2162
2163/**
2164 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2165 * Convienience function to add a list of controls.
2166 *
2167 * @dai: DAI to add controls to
2168 * @controls: array of controls to add
2169 * @num_controls: number of elements in the array
2170 *
2171 * Return 0 for success, else error.
2172 */
2173int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2174 const struct snd_kcontrol_new *controls, int num_controls)
2175{
2176 struct snd_card *card = dai->card->snd_card;
2177
2178 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2179 NULL, dai);
2180}
2181EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2182
db2a4165
FM		 2183/**
2184 * snd_soc_info_enum_double - enumerated double mixer info callback
2185 * @kcontrol: mixer control
2186 * @uinfo: control element information
2187 *
2188 * Callback to provide information about a double enumerated
2189 * mixer control.
2190 *
2191 * Returns 0 for success.
2192 */
2193int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2194 struct snd_ctl_elem_info *uinfo)
2195{
2196 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2197
2198 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2199 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
f8ba0b7b 2200 uinfo->value.enumerated.items = e->max;
db2a4165 2201
f8ba0b7b
JS		 2202 if (uinfo->value.enumerated.item > e->max - 1)
2203 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 2204 strcpy(uinfo->value.enumerated.name,
2205 e->texts[uinfo->value.enumerated.item]);
2206 return 0;
2207}
2208EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2209
2210/**
2211 * snd_soc_get_enum_double - enumerated double mixer get callback
2212 * @kcontrol: mixer control
ac11a2b3 2213 * @ucontrol: control element information
db2a4165
FM		 2214 *
2215 * Callback to get the value of a double enumerated mixer.
2216 *
2217 * Returns 0 for success.
2218 */
2219int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2220 struct snd_ctl_elem_value *ucontrol)
2221{
2222 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2223 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2224 unsigned int val, bitmask;
db2a4165 2225
f8ba0b7b 2226 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165
FM		 2227 ;
2228 val = snd_soc_read(codec, e->reg);
3ff3f64b
MB		 2229 ucontrol->value.enumerated.item[0]
2230 = (val >> e->shift_l) & (bitmask - 1);
db2a4165
FM		 2231 if (e->shift_l != e->shift_r)
2232 ucontrol->value.enumerated.item[1] =
2233 (val >> e->shift_r) & (bitmask - 1);
2234
2235 return 0;
2236}
2237EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2238
2239/**
2240 * snd_soc_put_enum_double - enumerated double mixer put callback
2241 * @kcontrol: mixer control
ac11a2b3 2242 * @ucontrol: control element information
db2a4165
FM		 2243 *
2244 * Callback to set the value of a double enumerated mixer.
2245 *
2246 * Returns 0 for success.
2247 */
2248int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2249 struct snd_ctl_elem_value *ucontrol)
2250{
2251 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2252 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2253 unsigned int val;
2254 unsigned int mask, bitmask;
db2a4165 2255
f8ba0b7b 2256 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165 2257 ;
f8ba0b7b 2258 if (ucontrol->value.enumerated.item[0] > e->max - 1)
db2a4165
FM		 2259 return -EINVAL;
2260 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2261 mask = (bitmask - 1) << e->shift_l;
2262 if (e->shift_l != e->shift_r) {
f8ba0b7b 2263 if (ucontrol->value.enumerated.item[1] > e->max - 1)
db2a4165
FM		 2264 return -EINVAL;
2265 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2266 mask |= (bitmask - 1) << e->shift_r;
2267 }
2268
6c508c62 2269 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
db2a4165
FM		 2270}
2271EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2272
2e72f8e3
PU		 2273/**
2274 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2275 * @kcontrol: mixer control
2276 * @ucontrol: control element information
2277 *
2278 * Callback to get the value of a double semi enumerated mixer.
2279 *
2280 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2281 * used for handling bitfield coded enumeration for example.
2282 *
2283 * Returns 0 for success.
2284 */
2285int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2286 struct snd_ctl_elem_value *ucontrol)
2287{
2288 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2289 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2290 unsigned int reg_val, val, mux;
2e72f8e3
PU		 2291
2292 reg_val = snd_soc_read(codec, e->reg);
2293 val = (reg_val >> e->shift_l) & e->mask;
2294 for (mux = 0; mux < e->max; mux++) {
2295 if (val == e->values[mux])
2296 break;
2297 }
2298 ucontrol->value.enumerated.item[0] = mux;
2299 if (e->shift_l != e->shift_r) {
2300 val = (reg_val >> e->shift_r) & e->mask;
2301 for (mux = 0; mux < e->max; mux++) {
2302 if (val == e->values[mux])
2303 break;
2304 }
2305 ucontrol->value.enumerated.item[1] = mux;
2306 }
2307
2308 return 0;
2309}
2310EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2311
2312/**
2313 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2314 * @kcontrol: mixer control
2315 * @ucontrol: control element information
2316 *
2317 * Callback to set the value of a double semi enumerated mixer.
2318 *
2319 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2320 * used for handling bitfield coded enumeration for example.
2321 *
2322 * Returns 0 for success.
2323 */
2324int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2325 struct snd_ctl_elem_value *ucontrol)
2326{
2327 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2328 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2329 unsigned int val;
2330 unsigned int mask;
2e72f8e3
PU		 2331
2332 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2333 return -EINVAL;
2334 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2335 mask = e->mask << e->shift_l;
2336 if (e->shift_l != e->shift_r) {
2337 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2338 return -EINVAL;
2339 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2340 mask |= e->mask << e->shift_r;
2341 }
2342
6c508c62 2343 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2e72f8e3
PU		 2344}
2345EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2346
db2a4165
FM		 2347/**
2348 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2349 * @kcontrol: mixer control
2350 * @uinfo: control element information
2351 *
2352 * Callback to provide information about an external enumerated
2353 * single mixer.
2354 *
2355 * Returns 0 for success.
2356 */
2357int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2358 struct snd_ctl_elem_info *uinfo)
2359{
2360 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2361
2362 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2363 uinfo->count = 1;
f8ba0b7b 2364 uinfo->value.enumerated.items = e->max;
db2a4165 2365
f8ba0b7b
JS		 2366 if (uinfo->value.enumerated.item > e->max - 1)
2367 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 2368 strcpy(uinfo->value.enumerated.name,
2369 e->texts[uinfo->value.enumerated.item]);
2370 return 0;
2371}
2372EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2373
2374/**
2375 * snd_soc_info_volsw_ext - external single mixer info callback
2376 * @kcontrol: mixer control
2377 * @uinfo: control element information
2378 *
2379 * Callback to provide information about a single external mixer control.
2380 *
2381 * Returns 0 for success.
2382 */
2383int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2384 struct snd_ctl_elem_info *uinfo)
2385{
a7a4ac86
PZ		 2386 int max = kcontrol->private_value;
2387
fd5dfad9 2388 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2389 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2390 else
2391 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2392
db2a4165
FM		 2393 uinfo->count = 1;
2394 uinfo->value.integer.min = 0;
a7a4ac86 2395 uinfo->value.integer.max = max;
db2a4165
FM		 2396 return 0;
2397}
2398EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2399
db2a4165
FM		 2400/**
2401 * snd_soc_info_volsw - single mixer info callback
2402 * @kcontrol: mixer control
2403 * @uinfo: control element information
2404 *
e8f5a103
PU		 2405 * Callback to provide information about a single mixer control, or a double
2406 * mixer control that spans 2 registers.
db2a4165
FM		 2407 *
2408 * Returns 0 for success.
2409 */
2410int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2411 struct snd_ctl_elem_info *uinfo)
2412{
4eaa9819
JS		 2413 struct soc_mixer_control *mc =
2414 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2415 int platform_max;
db2a4165 2416
d11bb4a9
PU		 2417 if (!mc->platform_max)
2418 mc->platform_max = mc->max;
2419 platform_max = mc->platform_max;
2420
2421 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2422 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2423 else
2424 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2425
e8f5a103 2426 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
db2a4165 2427 uinfo->value.integer.min = 0;
d11bb4a9 2428 uinfo->value.integer.max = platform_max;
db2a4165
FM		 2429 return 0;
2430}
2431EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2432
2433/**
2434 * snd_soc_get_volsw - single mixer get callback
2435 * @kcontrol: mixer control
ac11a2b3 2436 * @ucontrol: control element information
db2a4165 2437 *
f7915d99
PU		 2438 * Callback to get the value of a single mixer control, or a double mixer
2439 * control that spans 2 registers.
db2a4165
FM		 2440 *
2441 * Returns 0 for success.
2442 */
2443int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2444 struct snd_ctl_elem_value *ucontrol)
2445{
4eaa9819
JS		 2446 struct soc_mixer_control *mc =
2447 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2448 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2449 unsigned int reg = mc->reg;
f7915d99 2450 unsigned int reg2 = mc->rreg;
815ecf8d
JS		 2451 unsigned int shift = mc->shift;
2452 unsigned int rshift = mc->rshift;
4eaa9819 2453 int max = mc->max;
815ecf8d
JS		 2454 unsigned int mask = (1 << fls(max)) - 1;
2455 unsigned int invert = mc->invert;
db2a4165
FM		 2456
2457 ucontrol->value.integer.value[0] =
2458 (snd_soc_read(codec, reg) >> shift) & mask;
f7915d99 2459 if (invert)
db2a4165 2460 ucontrol->value.integer.value[0] =
a7a4ac86 2461 max - ucontrol->value.integer.value[0];
f7915d99
PU		 2462
2463 if (snd_soc_volsw_is_stereo(mc)) {
2464 if (reg == reg2)
2465 ucontrol->value.integer.value[1] =
2466 (snd_soc_read(codec, reg) >> rshift) & mask;
2467 else
2468 ucontrol->value.integer.value[1] =
2469 (snd_soc_read(codec, reg2) >> shift) & mask;
2470 if (invert)
db2a4165 2471 ucontrol->value.integer.value[1] =
a7a4ac86 2472 max - ucontrol->value.integer.value[1];
db2a4165
FM		 2473 }
2474
2475 return 0;
2476}
2477EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2478
2479/**
2480 * snd_soc_put_volsw - single mixer put callback
2481 * @kcontrol: mixer control
ac11a2b3 2482 * @ucontrol: control element information
db2a4165 2483 *
974815ba
PU		 2484 * Callback to set the value of a single mixer control, or a double mixer
2485 * control that spans 2 registers.
db2a4165
FM		 2486 *
2487 * Returns 0 for success.
2488 */
2489int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2490 struct snd_ctl_elem_value *ucontrol)
2491{
4eaa9819
JS		 2492 struct soc_mixer_control *mc =
2493 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2494 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2495 unsigned int reg = mc->reg;
974815ba 2496 unsigned int reg2 = mc->rreg;
815ecf8d
JS		 2497 unsigned int shift = mc->shift;
2498 unsigned int rshift = mc->rshift;
4eaa9819 2499 int max = mc->max;
815ecf8d
JS		 2500 unsigned int mask = (1 << fls(max)) - 1;
2501 unsigned int invert = mc->invert;
974815ba
PU		 2502 int err;
2503 bool type_2r = 0;
2504 unsigned int val2 = 0;
2505 unsigned int val, val_mask;
db2a4165
FM		 2506
2507 val = (ucontrol->value.integer.value[0] & mask);
2508 if (invert)
a7a4ac86 2509 val = max - val;
db2a4165
FM		 2510 val_mask = mask << shift;
2511 val = val << shift;
974815ba 2512 if (snd_soc_volsw_is_stereo(mc)) {
db2a4165
FM		 2513 val2 = (ucontrol->value.integer.value[1] & mask);
2514 if (invert)
a7a4ac86 2515 val2 = max - val2;
974815ba
PU		 2516 if (reg == reg2) {
2517 val_mask |= mask << rshift;
2518 val |= val2 << rshift;
2519 } else {
2520 val2 = val2 << shift;
2521 type_2r = 1;
2522 }
db2a4165 2523 }
6c508c62 2524 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3ff3f64b 2525 if (err < 0)
db2a4165
FM		 2526 return err;
2527
974815ba
PU		 2528 if (type_2r)
2529 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2530
db2a4165
FM		 2531 return err;
2532}
974815ba 2533EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
db2a4165 2534
e13ac2e9
MB		 2535/**
2536 * snd_soc_info_volsw_s8 - signed mixer info callback
2537 * @kcontrol: mixer control
2538 * @uinfo: control element information
2539 *
2540 * Callback to provide information about a signed mixer control.
2541 *
2542 * Returns 0 for success.
2543 */
2544int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2545 struct snd_ctl_elem_info *uinfo)
2546{
4eaa9819
JS		 2547 struct soc_mixer_control *mc =
2548 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2549 int platform_max;
4eaa9819 2550 int min = mc->min;
e13ac2e9 2551
d11bb4a9
PU		 2552 if (!mc->platform_max)
2553 mc->platform_max = mc->max;
2554 platform_max = mc->platform_max;
2555
e13ac2e9
MB		 2556 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2557 uinfo->count = 2;
2558 uinfo->value.integer.min = 0;
d11bb4a9 2559 uinfo->value.integer.max = platform_max - min;
e13ac2e9
MB		 2560 return 0;
2561}
2562EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2563
2564/**
2565 * snd_soc_get_volsw_s8 - signed mixer get callback
2566 * @kcontrol: mixer control
ac11a2b3 2567 * @ucontrol: control element information
e13ac2e9
MB		 2568 *
2569 * Callback to get the value of a signed mixer control.
2570 *
2571 * Returns 0 for success.
2572 */
2573int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2574 struct snd_ctl_elem_value *ucontrol)
2575{
4eaa9819
JS		 2576 struct soc_mixer_control *mc =
2577 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2578 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2579 unsigned int reg = mc->reg;
4eaa9819 2580 int min = mc->min;
e13ac2e9
MB		 2581 int val = snd_soc_read(codec, reg);
2582
2583 ucontrol->value.integer.value[0] =
2584 ((signed char)(val & 0xff))-min;
2585 ucontrol->value.integer.value[1] =
2586 ((signed char)((val >> 8) & 0xff))-min;
2587 return 0;
2588}
2589EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2590
2591/**
2592 * snd_soc_put_volsw_sgn - signed mixer put callback
2593 * @kcontrol: mixer control
ac11a2b3 2594 * @ucontrol: control element information
e13ac2e9
MB		 2595 *
2596 * Callback to set the value of a signed mixer control.
2597 *
2598 * Returns 0 for success.
2599 */
2600int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2601 struct snd_ctl_elem_value *ucontrol)
2602{
4eaa9819
JS		 2603 struct soc_mixer_control *mc =
2604 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2605 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2606 unsigned int reg = mc->reg;
4eaa9819 2607 int min = mc->min;
46f5822f 2608 unsigned int val;
e13ac2e9
MB		 2609
2610 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2611 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2612
6c508c62 2613 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
e13ac2e9
MB		 2614}
2615EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2616
637d3847
PU		 2617/**
2618 * snd_soc_limit_volume - Set new limit to an existing volume control.
2619 *
2620 * @codec: where to look for the control
2621 * @name: Name of the control
2622 * @max: new maximum limit
2623 *
2624 * Return 0 for success, else error.
2625 */
2626int snd_soc_limit_volume(struct snd_soc_codec *codec,
2627 const char *name, int max)
2628{
f0fba2ad 2629 struct snd_card *card = codec->card->snd_card;
637d3847
PU		 2630 struct snd_kcontrol *kctl;
2631 struct soc_mixer_control *mc;
2632 int found = 0;
2633 int ret = -EINVAL;
2634
2635 /* Sanity check for name and max */
2636 if (unlikely(!name || max <= 0))
2637 return -EINVAL;
2638
2639 list_for_each_entry(kctl, &card->controls, list) {
2640 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2641 found = 1;
2642 break;
2643 }
2644 }
2645 if (found) {
2646 mc = (struct soc_mixer_control *)kctl->private_value;
2647 if (max <= mc->max) {
d11bb4a9 2648 mc->platform_max = max;
637d3847
PU		 2649 ret = 0;
2650 }
2651 }
2652 return ret;
2653}
2654EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2655
b6f4bb38 2656/**
2657 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2658 * mixer info callback
2659 * @kcontrol: mixer control
2660 * @uinfo: control element information
2661 *
2662 * Returns 0 for success.
2663 */
2664int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2665 struct snd_ctl_elem_info *uinfo)
2666{
2667 struct soc_mixer_control *mc =
2668 (struct soc_mixer_control *)kcontrol->private_value;
2669 int max = mc->max;
2670 int min = mc->min;
2671
2672 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2673 uinfo->count = 2;
2674 uinfo->value.integer.min = 0;
2675 uinfo->value.integer.max = max-min;
2676
2677 return 0;
2678}
2679EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2680
2681/**
2682 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2683 * mixer get callback
2684 * @kcontrol: mixer control
2685 * @uinfo: control element information
2686 *
2687 * Returns 0 for success.
2688 */
2689int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2690 struct snd_ctl_elem_value *ucontrol)
2691{
2692 struct soc_mixer_control *mc =
2693 (struct soc_mixer_control *)kcontrol->private_value;
2694 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2695 unsigned int mask = (1<<mc->shift)-1;
2696 int min = mc->min;
2697 int val = snd_soc_read(codec, mc->reg) & mask;
2698 int valr = snd_soc_read(codec, mc->rreg) & mask;
2699
20630c7f
SL		 2700 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2701 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
b6f4bb38 2702 return 0;
2703}
2704EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2705
2706/**
2707 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2708 * mixer put callback
2709 * @kcontrol: mixer control
2710 * @uinfo: control element information
2711 *
2712 * Returns 0 for success.
2713 */
2714int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2715 struct snd_ctl_elem_value *ucontrol)
2716{
2717 struct soc_mixer_control *mc =
2718 (struct soc_mixer_control *)kcontrol->private_value;
2719 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2720 unsigned int mask = (1<<mc->shift)-1;
2721 int min = mc->min;
2722 int ret;
2723 unsigned int val, valr, oval, ovalr;
2724
2725 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2726 val &= mask;
2727 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2728 valr &= mask;
2729
2730 oval = snd_soc_read(codec, mc->reg) & mask;
2731 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2732
2733 ret = 0;
2734 if (oval != val) {
2735 ret = snd_soc_write(codec, mc->reg, val);
2736 if (ret < 0)
f1df5aec 2737 return ret;
b6f4bb38 2738 }
2739 if (ovalr != valr) {
2740 ret = snd_soc_write(codec, mc->rreg, valr);
2741 if (ret < 0)
f1df5aec 2742 return ret;
b6f4bb38 2743 }
2744
2745 return 0;
2746}
2747EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2748
71d08516
MB		 2749int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
2750 struct snd_ctl_elem_info *uinfo)
2751{
2752 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2753 struct soc_bytes *params = (void *)kcontrol->private_value;
2754
2755 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
2756 uinfo->count = params->num_regs * codec->val_bytes;
2757
2758 return 0;
2759}
2760EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
2761
2762int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
2763 struct snd_ctl_elem_value *ucontrol)
2764{
2765 struct soc_bytes *params = (void *)kcontrol->private_value;
2766 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2767 int ret;
2768
2769 if (codec->using_regmap)
2770 ret = regmap_raw_read(codec->control_data, params->base,
2771 ucontrol->value.bytes.data,
2772 params->num_regs * codec->val_bytes);
2773 else
2774 ret = -EINVAL;
2775
f831b055
MB		 2776 /* Hide any masked bytes to ensure consistent data reporting */
2777 if (ret == 0 && params->mask) {
2778 switch (codec->val_bytes) {
2779 case 1:
2780 ucontrol->value.bytes.data[0] &= ~params->mask;
2781 break;
2782 case 2:
2783 ((u16 *)(&ucontrol->value.bytes.data))[0]
2784 &= ~params->mask;
2785 break;
2786 case 4:
2787 ((u32 *)(&ucontrol->value.bytes.data))[0]
2788 &= ~params->mask;
2789 break;
2790 default:
2791 return -EINVAL;
2792 }
2793 }
2794
71d08516
MB		 2795 return ret;
2796}
2797EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
2798
2799int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
2800 struct snd_ctl_elem_value *ucontrol)
2801{
2802 struct soc_bytes *params = (void *)kcontrol->private_value;
2803 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
f831b055
MB		 2804 int ret, len;
2805 unsigned int val;
2806 void *data;
71d08516 2807
f831b055
MB		 2808 if (!codec->using_regmap)
2809 return -EINVAL;
2810
2811 data = ucontrol->value.bytes.data;
2812 len = params->num_regs * codec->val_bytes;
2813
2814 /*
2815 * If we've got a mask then we need to preserve the register
2816 * bits. We shouldn't modify the incoming data so take a
2817 * copy.
2818 */
2819 if (params->mask) {
2820 ret = regmap_read(codec->control_data, params->base, &val);
2821 if (ret != 0)
2822 return ret;
2823
2824 val &= params->mask;
2825
2826 data = kmemdup(data, len, GFP_KERNEL);
2827 if (!data)
2828 return -ENOMEM;
2829
2830 switch (codec->val_bytes) {
2831 case 1:
2832 ((u8 *)data)[0] &= ~params->mask;
2833 ((u8 *)data)[0] |= val;
2834 break;
2835 case 2:
2836 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
2837 ((u16 *)data)[0] |= cpu_to_be16(val);
2838 break;
2839 case 4:
2840 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
2841 ((u32 *)data)[0] |= cpu_to_be32(val);
2842 break;
2843 default:
2844 return -EINVAL;
2845 }
2846 }
2847
2848 ret = regmap_raw_write(codec->control_data, params->base,
2849 data, len);
2850
2851 if (params->mask)
2852 kfree(data);
71d08516
MB		 2853
2854 return ret;
2855}
2856EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
2857
8c6529db
LG		 2858/**
2859 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2860 * @dai: DAI
2861 * @clk_id: DAI specific clock ID
2862 * @freq: new clock frequency in Hz
2863 * @dir: new clock direction - input/output.
2864 *
2865 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2866 */
2867int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2868 unsigned int freq, int dir)
2869{
f0fba2ad
LG		 2870 if (dai->driver && dai->driver->ops->set_sysclk)
2871 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
ec4ee52a 2872 else if (dai->codec && dai->codec->driver->set_sysclk)
da1c6ea6 2873 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
ec4ee52a 2874 freq, dir);
8c6529db
LG		 2875 else
2876 return -EINVAL;
2877}
2878EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2879
ec4ee52a
MB		 2880/**
2881 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2882 * @codec: CODEC
2883 * @clk_id: DAI specific clock ID
da1c6ea6 2884 * @source: Source for the clock
ec4ee52a
MB		 2885 * @freq: new clock frequency in Hz
2886 * @dir: new clock direction - input/output.
2887 *
2888 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2889 */
2890int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
da1c6ea6 2891 int source, unsigned int freq, int dir)
ec4ee52a
MB		 2892{
2893 if (codec->driver->set_sysclk)
da1c6ea6
MB		 2894 return codec->driver->set_sysclk(codec, clk_id, source,
2895 freq, dir);
ec4ee52a
MB		 2896 else
2897 return -EINVAL;
2898}
2899EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2900
8c6529db
LG		 2901/**
2902 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2903 * @dai: DAI
ac11a2b3 2904 * @div_id: DAI specific clock divider ID
8c6529db
LG		 2905 * @div: new clock divisor.
2906 *
2907 * Configures the clock dividers. This is used to derive the best DAI bit and
2908 * frame clocks from the system or master clock. It's best to set the DAI bit
2909 * and frame clocks as low as possible to save system power.
2910 */
2911int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2912 int div_id, int div)
2913{
f0fba2ad
LG		 2914 if (dai->driver && dai->driver->ops->set_clkdiv)
2915 return dai->driver->ops->set_clkdiv(dai, div_id, div);
8c6529db
LG		 2916 else
2917 return -EINVAL;
2918}
2919EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2920
2921/**
2922 * snd_soc_dai_set_pll - configure DAI PLL.
2923 * @dai: DAI
2924 * @pll_id: DAI specific PLL ID
85488037 2925 * @source: DAI specific source for the PLL
8c6529db
LG		 2926 * @freq_in: PLL input clock frequency in Hz
2927 * @freq_out: requested PLL output clock frequency in Hz
2928 *
2929 * Configures and enables PLL to generate output clock based on input clock.
2930 */
85488037
MB		 2931int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2932 unsigned int freq_in, unsigned int freq_out)
8c6529db 2933{
f0fba2ad
LG		 2934 if (dai->driver && dai->driver->ops->set_pll)
2935 return dai->driver->ops->set_pll(dai, pll_id, source,
85488037 2936 freq_in, freq_out);
ec4ee52a
MB		 2937 else if (dai->codec && dai->codec->driver->set_pll)
2938 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2939 freq_in, freq_out);
8c6529db
LG		 2940 else
2941 return -EINVAL;
2942}
2943EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2944
ec4ee52a
MB		 2945/*
2946 * snd_soc_codec_set_pll - configure codec PLL.
2947 * @codec: CODEC
2948 * @pll_id: DAI specific PLL ID
2949 * @source: DAI specific source for the PLL
2950 * @freq_in: PLL input clock frequency in Hz
2951 * @freq_out: requested PLL output clock frequency in Hz
2952 *
2953 * Configures and enables PLL to generate output clock based on input clock.
2954 */
2955int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2956 unsigned int freq_in, unsigned int freq_out)
2957{
2958 if (codec->driver->set_pll)
2959 return codec->driver->set_pll(codec, pll_id, source,
2960 freq_in, freq_out);
2961 else
2962 return -EINVAL;
2963}
2964EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2965
8c6529db
LG		 2966/**
2967 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2968 * @dai: DAI
8c6529db
LG		 2969 * @fmt: SND_SOC_DAIFMT_ format value.
2970 *
2971 * Configures the DAI hardware format and clocking.
2972 */
2973int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2974{
5e4ba569 2975 if (dai->driver == NULL)
8c6529db 2976 return -EINVAL;
5e4ba569
SG		 2977 if (dai->driver->ops->set_fmt == NULL)
2978 return -ENOTSUPP;
2979 return dai->driver->ops->set_fmt(dai, fmt);
8c6529db
LG		 2980}
2981EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2982
2983/**
2984 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2985 * @dai: DAI
a5479e38
DR		 2986 * @tx_mask: bitmask representing active TX slots.
2987 * @rx_mask: bitmask representing active RX slots.
8c6529db 2988 * @slots: Number of slots in use.
a5479e38 2989 * @slot_width: Width in bits for each slot.
8c6529db
LG		 2990 *
2991 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2992 * specific.
2993 */
2994int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
a5479e38 2995 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
8c6529db 2996{
f0fba2ad
LG		 2997 if (dai->driver && dai->driver->ops->set_tdm_slot)
2998 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
a5479e38 2999 slots, slot_width);
8c6529db
LG		 3000 else
3001 return -EINVAL;
3002}
3003EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3004
472df3cb
BS		 3005/**
3006 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3007 * @dai: DAI
3008 * @tx_num: how many TX channels
3009 * @tx_slot: pointer to an array which imply the TX slot number channel
3010 * 0~num-1 uses
3011 * @rx_num: how many RX channels
3012 * @rx_slot: pointer to an array which imply the RX slot number channel
3013 * 0~num-1 uses
3014 *
3015 * configure the relationship between channel number and TDM slot number.
3016 */
3017int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3018 unsigned int tx_num, unsigned int *tx_slot,
3019 unsigned int rx_num, unsigned int *rx_slot)
3020{
f0fba2ad
LG		 3021 if (dai->driver && dai->driver->ops->set_channel_map)
3022 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
472df3cb
BS		 3023 rx_num, rx_slot);
3024 else
3025 return -EINVAL;
3026}
3027EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3028
8c6529db
LG		 3029/**
3030 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3031 * @dai: DAI
3032 * @tristate: tristate enable
3033 *
3034 * Tristates the DAI so that others can use it.
3035 */
3036int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3037{
f0fba2ad
LG		 3038 if (dai->driver && dai->driver->ops->set_tristate)
3039 return dai->driver->ops->set_tristate(dai, tristate);
8c6529db
LG		 3040 else
3041 return -EINVAL;
3042}
3043EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3044
3045/**
3046 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3047 * @dai: DAI
3048 * @mute: mute enable
3049 *
3050 * Mutes the DAI DAC.
3051 */
3052int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3053{
f0fba2ad
LG		 3054 if (dai->driver && dai->driver->ops->digital_mute)
3055 return dai->driver->ops->digital_mute(dai, mute);
8c6529db
LG		 3056 else
3057 return -EINVAL;
3058}
3059EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3060
c5af3a2e
MB		 3061/**
3062 * snd_soc_register_card - Register a card with the ASoC core
3063 *
ac11a2b3 3064 * @card: Card to register
c5af3a2e 3065 *
c5af3a2e 3066 */
70a7ca34 3067int snd_soc_register_card(struct snd_soc_card *card)
c5af3a2e 3068{
f0fba2ad
LG		 3069 int i;
3070
c5af3a2e
MB		 3071 if (!card->name || !card->dev)
3072 return -EINVAL;
3073
5a504963
SW		 3074 for (i = 0; i < card->num_links; i++) {
3075 struct snd_soc_dai_link *link = &card->dai_link[i];
3076
3077 /*
3078 * Codec must be specified by 1 of name or OF node,
3079 * not both or neither.
3080 */
3081 if (!!link->codec_name == !!link->codec_of_node) {
3082 dev_err(card->dev,
3b09bb82
LG		 3083 "Neither/both codec name/of_node are set for %s\n",
3084 link->name);
5a504963
SW		 3085 return -EINVAL;
3086 }
3087
3088 /*
3089 * Platform may be specified by either name or OF node, but
3090 * can be left unspecified, and a dummy platform will be used.
3091 */
3092 if (link->platform_name && link->platform_of_node) {
3093 dev_err(card->dev,
3b09bb82 3094 "Both platform name/of_node are set for %s\n", link->name);
5a504963
SW		 3095 return -EINVAL;
3096 }
3097
3098 /*
3099 * CPU DAI must be specified by 1 of name or OF node,
3100 * not both or neither.
3101 */
3102 if (!!link->cpu_dai_name == !!link->cpu_dai_of_node) {
3103 dev_err(card->dev,
3b09bb82
LG		 3104 "Neither/both cpu_dai name/of_node are set for %s\n",
3105 link->name);
5a504963
SW		 3106 return -EINVAL;
3107 }
3108 }
3109
ed77cc12
MB		 3110 dev_set_drvdata(card->dev, card);
3111
111c6419
SW		 3112 snd_soc_initialize_card_lists(card);
3113
150dd2f8
VK		 3114 soc_init_card_debugfs(card);
3115
181a6892
MB		 3116 card->rtd = devm_kzalloc(card->dev,
3117 sizeof(struct snd_soc_pcm_runtime) *
3118 (card->num_links + card->num_aux_devs),
3119 GFP_KERNEL);
f0fba2ad
LG		 3120 if (card->rtd == NULL)
3121 return -ENOMEM;
a7dbb603 3122 card->num_rtd = 0;
2eea392d 3123 card->rtd_aux = &card->rtd[card->num_links];
f0fba2ad
LG		 3124
3125 for (i = 0; i < card->num_links; i++)
3126 card->rtd[i].dai_link = &card->dai_link[i];
3127
c5af3a2e 3128 INIT_LIST_HEAD(&card->list);
db432b41 3129 INIT_LIST_HEAD(&card->dapm_dirty);
c5af3a2e 3130 card->instantiated = 0;
f0fba2ad 3131 mutex_init(&card->mutex);
c5af3a2e
MB		 3132
3133 mutex_lock(&client_mutex);
3134 list_add(&card->list, &card_list);
435c5e25 3135 snd_soc_instantiate_cards();
c5af3a2e
MB		 3136 mutex_unlock(&client_mutex);
3137
3138 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3139
3140 return 0;
3141}
70a7ca34 3142EXPORT_SYMBOL_GPL(snd_soc_register_card);
c5af3a2e
MB		 3143
3144/**
3145 * snd_soc_unregister_card - Unregister a card with the ASoC core
3146 *
ac11a2b3 3147 * @card: Card to unregister
c5af3a2e 3148 *
c5af3a2e 3149 */
70a7ca34 3150int snd_soc_unregister_card(struct snd_soc_card *card)
c5af3a2e 3151{
b0e26485
VK		 3152 if (card->instantiated)
3153 soc_cleanup_card_resources(card);
c5af3a2e
MB		 3154 mutex_lock(&client_mutex);
3155 list_del(&card->list);
3156 mutex_unlock(&client_mutex);
c5af3a2e
MB		 3157 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3158
3159 return 0;
3160}
70a7ca34 3161EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
c5af3a2e 3162
f0fba2ad
LG		 3163/*
3164 * Simplify DAI link configuration by removing ".-1" from device names
3165 * and sanitizing names.
3166 */
0b9a214a 3167static char *fmt_single_name(struct device *dev, int *id)
f0fba2ad
LG		 3168{
3169 char *found, name[NAME_SIZE];
3170 int id1, id2;
3171
3172 if (dev_name(dev) == NULL)
3173 return NULL;
3174
58818a77 3175 strlcpy(name, dev_name(dev), NAME_SIZE);
f0fba2ad
LG		 3176
3177 /* are we a "%s.%d" name (platform and SPI components) */
3178 found = strstr(name, dev->driver->name);
3179 if (found) {
3180 /* get ID */
3181 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3182
3183 /* discard ID from name if ID == -1 */
3184 if (*id == -1)
3185 found[strlen(dev->driver->name)] = '\0';
3186 }
3187
3188 } else {
3189 /* I2C component devices are named "bus-addr" */
3190 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3191 char tmp[NAME_SIZE];
3192
3193 /* create unique ID number from I2C addr and bus */
05899446 3194 *id = ((id1 & 0xffff) << 16) + id2;
f0fba2ad
LG		 3195
3196 /* sanitize component name for DAI link creation */
3197 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
58818a77 3198 strlcpy(name, tmp, NAME_SIZE);
f0fba2ad
LG		 3199 } else
3200 *id = 0;
3201 }
3202
3203 return kstrdup(name, GFP_KERNEL);
3204}
3205
3206/*
3207 * Simplify DAI link naming for single devices with multiple DAIs by removing
3208 * any ".-1" and using the DAI name (instead of device name).
3209 */
3210static inline char *fmt_multiple_name(struct device *dev,
3211 struct snd_soc_dai_driver *dai_drv)
3212{
3213 if (dai_drv->name == NULL) {
0837fc62 3214 pr_err("asoc: error - multiple DAI %s registered with no name\n",
f0fba2ad
LG		 3215 dev_name(dev));
3216 return NULL;
3217 }
3218
3219 return kstrdup(dai_drv->name, GFP_KERNEL);
3220}
3221
9115171a
MB		 3222/**
3223 * snd_soc_register_dai - Register a DAI with the ASoC core
3224 *
ac11a2b3 3225 * @dai: DAI to register
9115171a 3226 */
f0fba2ad
LG		 3227int snd_soc_register_dai(struct device *dev,
3228 struct snd_soc_dai_driver *dai_drv)
9115171a 3229{
f0fba2ad
LG		 3230 struct snd_soc_dai *dai;
3231
3232 dev_dbg(dev, "dai register %s\n", dev_name(dev));
9115171a 3233
f0fba2ad
LG		 3234 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3235 if (dai == NULL)
a7393623 3236 return -ENOMEM;
9115171a 3237
f0fba2ad
LG		 3238 /* create DAI component name */
3239 dai->name = fmt_single_name(dev, &dai->id);
3240 if (dai->name == NULL) {
3241 kfree(dai);
3242 return -ENOMEM;
3243 }
6335d055 3244
f0fba2ad
LG		 3245 dai->dev = dev;
3246 dai->driver = dai_drv;
3247 if (!dai->driver->ops)
3248 dai->driver->ops = &null_dai_ops;
9115171a
MB		 3249
3250 mutex_lock(&client_mutex);
3251 list_add(&dai->list, &dai_list);
435c5e25 3252 snd_soc_instantiate_cards();
9115171a
MB		 3253 mutex_unlock(&client_mutex);
3254
3255 pr_debug("Registered DAI '%s'\n", dai->name);
3256
3257 return 0;
3258}
3259EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3260
3261/**
3262 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3263 *
ac11a2b3 3264 * @dai: DAI to unregister
9115171a 3265 */
f0fba2ad 3266void snd_soc_unregister_dai(struct device *dev)
9115171a 3267{
f0fba2ad
LG		 3268 struct snd_soc_dai *dai;
3269
3270 list_for_each_entry(dai, &dai_list, list) {
3271 if (dev == dai->dev)
3272 goto found;
3273 }
3274 return;
3275
3276found:
9115171a
MB		 3277 mutex_lock(&client_mutex);
3278 list_del(&dai->list);
3279 mutex_unlock(&client_mutex);
3280
3281 pr_debug("Unregistered DAI '%s'\n", dai->name);
f0fba2ad
LG		 3282 kfree(dai->name);
3283 kfree(dai);
9115171a
MB		 3284}
3285EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3286
3287/**
3288 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3289 *
ac11a2b3
MB		 3290 * @dai: Array of DAIs to register
3291 * @count: Number of DAIs
9115171a 3292 */
f0fba2ad
LG		 3293int snd_soc_register_dais(struct device *dev,
3294 struct snd_soc_dai_driver *dai_drv, size_t count)
9115171a 3295{
f0fba2ad
LG		 3296 struct snd_soc_dai *dai;
3297 int i, ret = 0;
3298
720ffa4c 3299 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
9115171a
MB		 3300
3301 for (i = 0; i < count; i++) {
f0fba2ad
LG		 3302
3303 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
c46e0079
AL		 3304 if (dai == NULL) {
3305 ret = -ENOMEM;
3306 goto err;
3307 }
f0fba2ad
LG		 3308
3309 /* create DAI component name */
3310 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3311 if (dai->name == NULL) {
3312 kfree(dai);
3313 ret = -EINVAL;
9115171a 3314 goto err;
f0fba2ad
LG		 3315 }
3316
3317 dai->dev = dev;
f0fba2ad 3318 dai->driver = &dai_drv[i];
0f9141c9
MB		 3319 if (dai->driver->id)
3320 dai->id = dai->driver->id;
3321 else
3322 dai->id = i;
f0fba2ad
LG		 3323 if (!dai->driver->ops)
3324 dai->driver->ops = &null_dai_ops;
3325
3326 mutex_lock(&client_mutex);
3327 list_add(&dai->list, &dai_list);
3328 mutex_unlock(&client_mutex);
3329
3330 pr_debug("Registered DAI '%s'\n", dai->name);
9115171a
MB		 3331 }
3332
1dcb4f38 3333 mutex_lock(&client_mutex);
f0fba2ad 3334 snd_soc_instantiate_cards();
1dcb4f38 3335 mutex_unlock(&client_mutex);
9115171a
MB		 3336 return 0;
3337
3338err:
3339 for (i--; i >= 0; i--)
f0fba2ad 3340 snd_soc_unregister_dai(dev);
9115171a
MB		 3341
3342 return ret;
3343}
3344EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3345
3346/**
3347 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3348 *
ac11a2b3
MB		 3349 * @dai: Array of DAIs to unregister
3350 * @count: Number of DAIs
9115171a 3351 */
f0fba2ad 3352void snd_soc_unregister_dais(struct device *dev, size_t count)
9115171a
MB		 3353{
3354 int i;
3355
3356 for (i = 0; i < count; i++)
f0fba2ad 3357 snd_soc_unregister_dai(dev);
9115171a
MB		 3358}
3359EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3360
12a48a8c
MB		 3361/**
3362 * snd_soc_register_platform - Register a platform with the ASoC core
3363 *
ac11a2b3 3364 * @platform: platform to register
12a48a8c 3365 */
f0fba2ad
LG		 3366int snd_soc_register_platform(struct device *dev,
3367 struct snd_soc_platform_driver *platform_drv)
12a48a8c 3368{
f0fba2ad
LG		 3369 struct snd_soc_platform *platform;
3370
3371 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3372
3373 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3374 if (platform == NULL)
a7393623 3375 return -ENOMEM;
f0fba2ad
LG		 3376
3377 /* create platform component name */
3378 platform->name = fmt_single_name(dev, &platform->id);
3379 if (platform->name == NULL) {
3380 kfree(platform);
3381 return -ENOMEM;
3382 }
12a48a8c 3383
f0fba2ad
LG		 3384 platform->dev = dev;
3385 platform->driver = platform_drv;
b7950641
LG		 3386 platform->dapm.dev = dev;
3387 platform->dapm.platform = platform;
64a648c2 3388 platform->dapm.stream_event = platform_drv->stream_event;
cc22d37e 3389 mutex_init(&platform->mutex);
12a48a8c
MB		 3390
3391 mutex_lock(&client_mutex);
3392 list_add(&platform->list, &platform_list);
435c5e25 3393 snd_soc_instantiate_cards();
12a48a8c
MB		 3394 mutex_unlock(&client_mutex);
3395
3396 pr_debug("Registered platform '%s'\n", platform->name);
3397
3398 return 0;
3399}
3400EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3401
3402/**
3403 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3404 *
ac11a2b3 3405 * @platform: platform to unregister
12a48a8c 3406 */
f0fba2ad 3407void snd_soc_unregister_platform(struct device *dev)
12a48a8c 3408{
f0fba2ad
LG		 3409 struct snd_soc_platform *platform;
3410
3411 list_for_each_entry(platform, &platform_list, list) {
3412 if (dev == platform->dev)
3413 goto found;
3414 }
3415 return;
3416
3417found:
12a48a8c
MB		 3418 mutex_lock(&client_mutex);
3419 list_del(&platform->list);
3420 mutex_unlock(&client_mutex);
3421
3422 pr_debug("Unregistered platform '%s'\n", platform->name);
f0fba2ad
LG		 3423 kfree(platform->name);
3424 kfree(platform);
12a48a8c
MB		 3425}
3426EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3427
151ab22c
MB		 3428static u64 codec_format_map[] = {
3429 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3430 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3431 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3432 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3433 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3434 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3435 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3436 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3437 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3438 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3439 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3440 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3441 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3442 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3443 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3444 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3445};
3446
3447/* Fix up the DAI formats for endianness: codecs don't actually see
3448 * the endianness of the data but we're using the CPU format
3449 * definitions which do need to include endianness so we ensure that
3450 * codec DAIs always have both big and little endian variants set.
3451 */
3452static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3453{
3454 int i;
3455
3456 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3457 if (stream->formats & codec_format_map[i])
3458 stream->formats |= codec_format_map[i];
3459}
3460
0d0cf00a
MB		 3461/**
3462 * snd_soc_register_codec - Register a codec with the ASoC core
3463 *
ac11a2b3 3464 * @codec: codec to register
0d0cf00a 3465 */
f0fba2ad 3466int snd_soc_register_codec(struct device *dev,
001ae4c0
MB		 3467 const struct snd_soc_codec_driver *codec_drv,
3468 struct snd_soc_dai_driver *dai_drv,
3469 int num_dai)
0d0cf00a 3470{
3335ddca 3471 size_t reg_size;
f0fba2ad
LG		 3472 struct snd_soc_codec *codec;
3473 int ret, i;
151ab22c 3474
f0fba2ad
LG		 3475 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3476
3477 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3478 if (codec == NULL)
3479 return -ENOMEM;
0d0cf00a 3480
f0fba2ad
LG		 3481 /* create CODEC component name */
3482 codec->name = fmt_single_name(dev, &codec->id);
3483 if (codec->name == NULL) {
3484 kfree(codec);
3485 return -ENOMEM;
3486 }
3487
23bbce34
DP		 3488 if (codec_drv->compress_type)
3489 codec->compress_type = codec_drv->compress_type;
3490 else
3491 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3492
c3acec26
MB		 3493 codec->write = codec_drv->write;
3494 codec->read = codec_drv->read;
1500b7b5
DP		 3495 codec->volatile_register = codec_drv->volatile_register;
3496 codec->readable_register = codec_drv->readable_register;
8020454c 3497 codec->writable_register = codec_drv->writable_register;
5124e69e 3498 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
ce6120cc
LG		 3499 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3500 codec->dapm.dev = dev;
3501 codec->dapm.codec = codec;
474b62d6 3502 codec->dapm.seq_notifier = codec_drv->seq_notifier;
64a648c2 3503 codec->dapm.stream_event = codec_drv->stream_event;
7a30a3db
DP		 3504 codec->dev = dev;
3505 codec->driver = codec_drv;
3506 codec->num_dai = num_dai;
3507 mutex_init(&codec->mutex);
ce6120cc 3508
f0fba2ad
LG		 3509 /* allocate CODEC register cache */
3510 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3335ddca 3511 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
aea170a0 3512 codec->reg_size = reg_size;
3335ddca
DP		 3513 /* it is necessary to make a copy of the default register cache
3514 * because in the case of using a compression type that requires
3515 * the default register cache to be marked as __devinitconst the
3516 * kernel might have freed the array by the time we initialize
3517 * the cache.
3518 */
2aa86323
DP		 3519 if (codec_drv->reg_cache_default) {
3520 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3521 reg_size, GFP_KERNEL);
3522 if (!codec->reg_def_copy) {
3523 ret = -ENOMEM;
3524 goto fail;
3525 }
f0fba2ad 3526 }
151ab22c
MB		 3527 }
3528
1500b7b5
DP		 3529 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3530 if (!codec->volatile_register)
3531 codec->volatile_register = snd_soc_default_volatile_register;
3532 if (!codec->readable_register)
3533 codec->readable_register = snd_soc_default_readable_register;
8020454c
DP		 3534 if (!codec->writable_register)
3535 codec->writable_register = snd_soc_default_writable_register;
1500b7b5
DP		 3536 }
3537
f0fba2ad
LG		 3538 for (i = 0; i < num_dai; i++) {
3539 fixup_codec_formats(&dai_drv[i].playback);
3540 fixup_codec_formats(&dai_drv[i].capture);
3541 }
3542
26b01ccd
MB		 3543 /* register any DAIs */
3544 if (num_dai) {
3545 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3546 if (ret < 0)
fdf0f54d 3547 goto fail;
26b01ccd 3548 }
f0fba2ad 3549
0d0cf00a
MB		 3550 mutex_lock(&client_mutex);
3551 list_add(&codec->list, &codec_list);
3552 snd_soc_instantiate_cards();
3553 mutex_unlock(&client_mutex);
3554
3555 pr_debug("Registered codec '%s'\n", codec->name);
0d0cf00a 3556 return 0;
f0fba2ad 3557
fdf0f54d 3558fail:
3335ddca
DP		 3559 kfree(codec->reg_def_copy);
3560 codec->reg_def_copy = NULL;
f0fba2ad
LG		 3561 kfree(codec->name);
3562 kfree(codec);
3563 return ret;
0d0cf00a
MB		 3564}
3565EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3566
3567/**
3568 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3569 *
ac11a2b3 3570 * @codec: codec to unregister
0d0cf00a 3571 */
f0fba2ad 3572void snd_soc_unregister_codec(struct device *dev)
0d0cf00a 3573{
f0fba2ad
LG		 3574 struct snd_soc_codec *codec;
3575 int i;
3576
3577 list_for_each_entry(codec, &codec_list, list) {
3578 if (dev == codec->dev)
3579 goto found;
3580 }
3581 return;
3582
3583found:
26b01ccd
MB		 3584 if (codec->num_dai)
3585 for (i = 0; i < codec->num_dai; i++)
3586 snd_soc_unregister_dai(dev);
f0fba2ad 3587
0d0cf00a
MB		 3588 mutex_lock(&client_mutex);
3589 list_del(&codec->list);
3590 mutex_unlock(&client_mutex);
3591
3592 pr_debug("Unregistered codec '%s'\n", codec->name);
f0fba2ad 3593
7a30a3db 3594 snd_soc_cache_exit(codec);
3335ddca 3595 kfree(codec->reg_def_copy);
1aafcd4d 3596 kfree(codec->name);
f0fba2ad 3597 kfree(codec);
0d0cf00a
MB		 3598}
3599EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3600
bec4fa05
SW		 3601/* Retrieve a card's name from device tree */
3602int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3603 const char *propname)
3604{
3605 struct device_node *np = card->dev->of_node;
3606 int ret;
3607
3608 ret = of_property_read_string_index(np, propname, 0, &card->name);
3609 /*
3610 * EINVAL means the property does not exist. This is fine providing
3611 * card->name was previously set, which is checked later in
3612 * snd_soc_register_card.
3613 */
3614 if (ret < 0 && ret != -EINVAL) {
3615 dev_err(card->dev,
3616 "Property '%s' could not be read: %d\n",
3617 propname, ret);
3618 return ret;
3619 }
3620
3621 return 0;
3622}
3623EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3624
a4a54dd5
SW		 3625int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3626 const char *propname)
3627{
3628 struct device_node *np = card->dev->of_node;
3629 int num_routes;
3630 struct snd_soc_dapm_route *routes;
3631 int i, ret;
3632
3633 num_routes = of_property_count_strings(np, propname);
3634 if (num_routes & 1) {
3635 dev_err(card->dev,
3636 "Property '%s's length is not even\n",
3637 propname);
3638 return -EINVAL;
3639 }
3640 num_routes /= 2;
3641 if (!num_routes) {
3642 dev_err(card->dev,
3643 "Property '%s's length is zero\n",
3644 propname);
3645 return -EINVAL;
3646 }
3647
3648 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3649 GFP_KERNEL);
3650 if (!routes) {
3651 dev_err(card->dev,
3652 "Could not allocate DAPM route table\n");
3653 return -EINVAL;
3654 }
3655
3656 for (i = 0; i < num_routes; i++) {
3657 ret = of_property_read_string_index(np, propname,
3658 2 * i, &routes[i].sink);
3659 if (ret) {
3660 dev_err(card->dev,
3661 "Property '%s' index %d could not be read: %d\n",
3662 propname, 2 * i, ret);
3663 return -EINVAL;
3664 }
3665 ret = of_property_read_string_index(np, propname,
3666 (2 * i) + 1, &routes[i].source);
3667 if (ret) {
3668 dev_err(card->dev,
3669 "Property '%s' index %d could not be read: %d\n",
3670 propname, (2 * i) + 1, ret);
3671 return -EINVAL;
3672 }
3673 }
3674
3675 card->num_dapm_routes = num_routes;
3676 card->dapm_routes = routes;
3677
3678 return 0;
3679}
3680EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3681
c9b3a40f 3682static int __init snd_soc_init(void)
db2a4165 3683{
384c89e2 3684#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 3685 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3686 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
0837fc62 3687 pr_warn("ASoC: Failed to create debugfs directory\n");
8a9dab1a 3688 snd_soc_debugfs_root = NULL;
384c89e2 3689 }
c3c5a19a 3690
8a9dab1a 3691 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
c3c5a19a
MB		 3692 &codec_list_fops))
3693 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3694
8a9dab1a 3695 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
f3208780
MB		 3696 &dai_list_fops))
3697 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
19c7ac27 3698
8a9dab1a 3699 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
19c7ac27
MB		 3700 &platform_list_fops))
3701 pr_warn("ASoC: Failed to create platform list debugfs file\n");
384c89e2
MB		 3702#endif
3703
fb257897
MB		 3704 snd_soc_util_init();
3705
db2a4165
FM		 3706 return platform_driver_register(&soc_driver);
3707}
4abe8e16 3708module_init(snd_soc_init);
db2a4165 3709
7d8c16a6 3710static void __exit snd_soc_exit(void)
db2a4165 3711{
fb257897
MB		 3712 snd_soc_util_exit();
3713
384c89e2 3714#ifdef CONFIG_DEBUG_FS
8a9dab1a 3715 debugfs_remove_recursive(snd_soc_debugfs_root);
384c89e2 3716#endif
3ff3f64b 3717 platform_driver_unregister(&soc_driver);
db2a4165 3718}
db2a4165
FM		 3719module_exit(snd_soc_exit);
3720
3721/* Module information */
d331124d 3722MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
db2a4165
FM		 3723MODULE_DESCRIPTION("ALSA SoC Core");
3724MODULE_LICENSE("GPL");
8b45a209 3725MODULE_ALIAS("platform:soc-audio");
Linux kernel - Deliverables
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