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Linux 4.1-rc1
[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>
741a509f 33#include <linux/pinctrl/consumer.h>
f0e8ed85 34#include <linux/ctype.h>
5a0e3ad6 35#include <linux/slab.h>
bec4fa05 36#include <linux/of.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>
01d7584c 42#include <sound/soc-dpcm.h>
db2a4165
FM		 43#include <sound/initval.h>
44
a8b1d34f
MB		 45#define CREATE_TRACE_POINTS
46#include <trace/events/asoc.h>
47
f0fba2ad
LG		 48#define NAME_SIZE 32
49
384c89e2 50#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 51struct dentry *snd_soc_debugfs_root;
52EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
384c89e2
MB		 53#endif
54
c5af3a2e 55static DEFINE_MUTEX(client_mutex);
12a48a8c 56static LIST_HEAD(platform_list);
0d0cf00a 57static LIST_HEAD(codec_list);
030e79f6 58static LIST_HEAD(component_list);
c5af3a2e 59
db2a4165
FM		 60/*
61 * This is a timeout to do a DAPM powerdown after a stream is closed().
62 * It can be used to eliminate pops between different playback streams, e.g.
63 * between two audio tracks.
64 */
65static int pmdown_time = 5000;
66module_param(pmdown_time, int, 0);
67MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
68
2bc9a81e
DP		 69/* returns the minimum number of bytes needed to represent
70 * a particular given value */
71static int min_bytes_needed(unsigned long val)
72{
73 int c = 0;
74 int i;
75
76 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
77 if (val & (1UL << i))
78 break;
79 c = (sizeof val * 8) - c;
80 if (!c || (c % 8))
81 c = (c + 8) / 8;
82 else
83 c /= 8;
84 return c;
85}
86
13fd179f
DP		 87/* fill buf which is 'len' bytes with a formatted
88 * string of the form 'reg: value\n' */
89static int format_register_str(struct snd_soc_codec *codec,
90 unsigned int reg, char *buf, size_t len)
91{
00b317a4
SW		 92 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
93 int regsize = codec->driver->reg_word_size * 2;
13fd179f
DP		 94 int ret;
95 char tmpbuf[len + 1];
96 char regbuf[regsize + 1];
97
98 /* since tmpbuf is allocated on the stack, warn the callers if they
99 * try to abuse this function */
100 WARN_ON(len > 63);
101
102 /* +2 for ': ' and + 1 for '\n' */
103 if (wordsize + regsize + 2 + 1 != len)
104 return -EINVAL;
105
25032c11 106 ret = snd_soc_read(codec, reg);
13fd179f
DP		 107 if (ret < 0) {
108 memset(regbuf, 'X', regsize);
109 regbuf[regsize] = '\0';
110 } else {
111 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
112 }
113
114 /* prepare the buffer */
115 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
116 /* copy it back to the caller without the '\0' */
117 memcpy(buf, tmpbuf, len);
118
119 return 0;
120}
121
2624d5fa 122/* codec register dump */
13fd179f
DP		 123static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
124 size_t count, loff_t pos)
2624d5fa 125{
13fd179f 126 int i, step = 1;
2bc9a81e 127 int wordsize, regsize;
13fd179f
DP		 128 int len;
129 size_t total = 0;
130 loff_t p = 0;
2bc9a81e 131
00b317a4
SW		 132 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
133 regsize = codec->driver->reg_word_size * 2;
2624d5fa 134
13fd179f
DP		 135 len = wordsize + regsize + 2 + 1;
136
f0fba2ad 137 if (!codec->driver->reg_cache_size)
2624d5fa
MB		 138 return 0;
139
f0fba2ad
LG		 140 if (codec->driver->reg_cache_step)
141 step = codec->driver->reg_cache_step;
2624d5fa 142
f0fba2ad 143 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
20a0ec27
LPC		 144 /* only support larger than PAGE_SIZE bytes debugfs
145 * entries for the default case */
146 if (p >= pos) {
147 if (total + len >= count - 1)
148 break;
149 format_register_str(codec, i, buf + total, len);
150 total += len;
5164d74d 151 }
20a0ec27 152 p += len;
2624d5fa
MB		 153 }
154
13fd179f 155 total = min(total, count - 1);
2624d5fa 156
13fd179f 157 return total;
2624d5fa 158}
13fd179f 159
2624d5fa
MB		 160static ssize_t codec_reg_show(struct device *dev,
161 struct device_attribute *attr, char *buf)
162{
36ae1a96 163 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
f0fba2ad 164
13fd179f 165 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
2624d5fa
MB		 166}
167
168static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
169
dbe21408
MB		 170static ssize_t pmdown_time_show(struct device *dev,
171 struct device_attribute *attr, char *buf)
172{
36ae1a96 173 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
dbe21408 174
f0fba2ad 175 return sprintf(buf, "%ld\n", rtd->pmdown_time);
dbe21408
MB		 176}
177
178static ssize_t pmdown_time_set(struct device *dev,
179 struct device_attribute *attr,
180 const char *buf, size_t count)
181{
36ae1a96 182 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
c593b520 183 int ret;
dbe21408 184
b785a492 185 ret = kstrtol(buf, 10, &rtd->pmdown_time);
c593b520
MB		 186 if (ret)
187 return ret;
dbe21408
MB		 188
189 return count;
190}
191
192static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
193
d29697dc
TI		 194static struct attribute *soc_dev_attrs[] = {
195 &dev_attr_codec_reg.attr,
196 &dev_attr_pmdown_time.attr,
197 NULL
198};
199
200static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
201 struct attribute *attr, int idx)
202{
203 struct device *dev = kobj_to_dev(kobj);
204 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
205
206 if (attr == &dev_attr_pmdown_time.attr)
207 return attr->mode; /* always visible */
208 return rtd->codec ? attr->mode : 0; /* enabled only with codec */
209}
210
211static const struct attribute_group soc_dapm_dev_group = {
212 .attrs = soc_dapm_dev_attrs,
213 .is_visible = soc_dev_attr_is_visible,
214};
215
216static const struct attribute_group soc_dev_roup = {
217 .attrs = soc_dev_attrs,
218 .is_visible = soc_dev_attr_is_visible,
219};
220
221static const struct attribute_group *soc_dev_attr_groups[] = {
222 &soc_dapm_dev_group,
223 &soc_dev_roup,
224 NULL
225};
226
2624d5fa 227#ifdef CONFIG_DEBUG_FS
2624d5fa 228static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
13fd179f 229 size_t count, loff_t *ppos)
2624d5fa
MB		 230{
231 ssize_t ret;
232 struct snd_soc_codec *codec = file->private_data;
13fd179f
DP		 233 char *buf;
234
235 if (*ppos < 0 || !count)
236 return -EINVAL;
237
238 buf = kmalloc(count, GFP_KERNEL);
2624d5fa
MB		 239 if (!buf)
240 return -ENOMEM;
13fd179f
DP		 241
242 ret = soc_codec_reg_show(codec, buf, count, *ppos);
243 if (ret >= 0) {
244 if (copy_to_user(user_buf, buf, ret)) {
245 kfree(buf);
246 return -EFAULT;
247 }
248 *ppos += ret;
249 }
250
2624d5fa
MB		 251 kfree(buf);
252 return ret;
253}
254
255static ssize_t codec_reg_write_file(struct file *file,
256 const char __user *user_buf, size_t count, loff_t *ppos)
257{
258 char buf[32];
34e268d8 259 size_t buf_size;
2624d5fa
MB		 260 char *start = buf;
261 unsigned long reg, value;
2624d5fa 262 struct snd_soc_codec *codec = file->private_data;
b785a492 263 int ret;
2624d5fa
MB		 264
265 buf_size = min(count, (sizeof(buf)-1));
266 if (copy_from_user(buf, user_buf, buf_size))
267 return -EFAULT;
268 buf[buf_size] = 0;
2624d5fa
MB		 269
270 while (*start == ' ')
271 start++;
272 reg = simple_strtoul(start, &start, 16);
2624d5fa
MB		 273 while (*start == ' ')
274 start++;
b785a492
JH		 275 ret = kstrtoul(start, 16, &value);
276 if (ret)
277 return ret;
0d51a9cb
MB		 278
279 /* Userspace has been fiddling around behind the kernel's back */
373d4d09 280 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
0d51a9cb 281
e4f078d8 282 snd_soc_write(codec, reg, value);
2624d5fa
MB		 283 return buf_size;
284}
285
286static const struct file_operations codec_reg_fops = {
234e3405 287 .open = simple_open,
2624d5fa
MB		 288 .read = codec_reg_read_file,
289 .write = codec_reg_write_file,
6038f373 290 .llseek = default_llseek,
2624d5fa
MB		 291};
292
81c7cfd1 293static void soc_init_component_debugfs(struct snd_soc_component *component)
e73f3de5 294{
6553bf06
LPC		 295 if (!component->card->debugfs_card_root)
296 return;
297
81c7cfd1
LPC		 298 if (component->debugfs_prefix) {
299 char *name;
e73f3de5 300
81c7cfd1
LPC		 301 name = kasprintf(GFP_KERNEL, "%s:%s",
302 component->debugfs_prefix, component->name);
303 if (name) {
304 component->debugfs_root = debugfs_create_dir(name,
305 component->card->debugfs_card_root);
306 kfree(name);
307 }
308 } else {
309 component->debugfs_root = debugfs_create_dir(component->name,
310 component->card->debugfs_card_root);
311 }
e73f3de5 312
81c7cfd1
LPC		 313 if (!component->debugfs_root) {
314 dev_warn(component->dev,
315 "ASoC: Failed to create component debugfs directory\n");
316 return;
317 }
e73f3de5 318
81c7cfd1
LPC		 319 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
320 component->debugfs_root);
e73f3de5 321
81c7cfd1
LPC		 322 if (component->init_debugfs)
323 component->init_debugfs(component);
e73f3de5
RK		 324}
325
81c7cfd1 326static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
2624d5fa 327{
81c7cfd1
LPC		 328 debugfs_remove_recursive(component->debugfs_root);
329}
d6ce4cf3 330
81c7cfd1
LPC		 331static void soc_init_codec_debugfs(struct snd_soc_component *component)
332{
333 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
2624d5fa
MB		 334
335 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
81c7cfd1 336 codec->component.debugfs_root,
2624d5fa
MB		 337 codec, &codec_reg_fops);
338 if (!codec->debugfs_reg)
10e8aa9a
MM		 339 dev_warn(codec->dev,
340 "ASoC: Failed to create codec register debugfs file\n");
731f1ab2
SG		 341}
342
c3c5a19a
MB		 343static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
344 size_t count, loff_t *ppos)
345{
346 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 347 ssize_t len, ret = 0;
c3c5a19a
MB		 348 struct snd_soc_codec *codec;
349
350 if (!buf)
351 return -ENOMEM;
352
34e81ab4
LPC		 353 mutex_lock(&client_mutex);
354
2b194f9d
MB		 355 list_for_each_entry(codec, &codec_list, list) {
356 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
f4333203 357 codec->component.name);
2b194f9d
MB		 358 if (len >= 0)
359 ret += len;
360 if (ret > PAGE_SIZE) {
361 ret = PAGE_SIZE;
362 break;
363 }
364 }
c3c5a19a 365
34e81ab4
LPC		 366 mutex_unlock(&client_mutex);
367
c3c5a19a
MB		 368 if (ret >= 0)
369 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
370
371 kfree(buf);
372
373 return ret;
374}
375
376static const struct file_operations codec_list_fops = {
377 .read = codec_list_read_file,
378 .llseek = default_llseek,/* read accesses f_pos */
379};
380
f3208780
MB		 381static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
382 size_t count, loff_t *ppos)
383{
384 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 385 ssize_t len, ret = 0;
1438c2f6 386 struct snd_soc_component *component;
f3208780
MB		 387 struct snd_soc_dai *dai;
388
389 if (!buf)
390 return -ENOMEM;
391
34e81ab4
LPC		 392 mutex_lock(&client_mutex);
393
1438c2f6
LPC		 394 list_for_each_entry(component, &component_list, list) {
395 list_for_each_entry(dai, &component->dai_list, list) {
396 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
397 dai->name);
398 if (len >= 0)
399 ret += len;
400 if (ret > PAGE_SIZE) {
401 ret = PAGE_SIZE;
402 break;
403 }
2b194f9d
MB		 404 }
405 }
f3208780 406
34e81ab4
LPC		 407 mutex_unlock(&client_mutex);
408
2b194f9d 409 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
f3208780
MB		 410
411 kfree(buf);
412
413 return ret;
414}
415
416static const struct file_operations dai_list_fops = {
417 .read = dai_list_read_file,
418 .llseek = default_llseek,/* read accesses f_pos */
419};
420
19c7ac27
MB		 421static ssize_t platform_list_read_file(struct file *file,
422 char __user *user_buf,
423 size_t count, loff_t *ppos)
424{
425 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 426 ssize_t len, ret = 0;
19c7ac27
MB		 427 struct snd_soc_platform *platform;
428
429 if (!buf)
430 return -ENOMEM;
431
34e81ab4
LPC		 432 mutex_lock(&client_mutex);
433
2b194f9d
MB		 434 list_for_each_entry(platform, &platform_list, list) {
435 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
f4333203 436 platform->component.name);
2b194f9d
MB		 437 if (len >= 0)
438 ret += len;
439 if (ret > PAGE_SIZE) {
440 ret = PAGE_SIZE;
441 break;
442 }
443 }
19c7ac27 444
34e81ab4
LPC		 445 mutex_unlock(&client_mutex);
446
2b194f9d 447 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
19c7ac27
MB		 448
449 kfree(buf);
450
451 return ret;
452}
453
454static const struct file_operations platform_list_fops = {
455 .read = platform_list_read_file,
456 .llseek = default_llseek,/* read accesses f_pos */
457};
458
a6052154
JN		 459static void soc_init_card_debugfs(struct snd_soc_card *card)
460{
6553bf06
LPC		 461 if (!snd_soc_debugfs_root)
462 return;
463
a6052154 464 card->debugfs_card_root = debugfs_create_dir(card->name,
8a9dab1a 465 snd_soc_debugfs_root);
3a45b867 466 if (!card->debugfs_card_root) {
a6052154 467 dev_warn(card->dev,
7c08be84 468 "ASoC: Failed to create card debugfs directory\n");
3a45b867
JN		 469 return;
470 }
471
472 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
473 card->debugfs_card_root,
474 &card->pop_time);
475 if (!card->debugfs_pop_time)
476 dev_warn(card->dev,
f110bfc7 477 "ASoC: Failed to create pop time debugfs file\n");
a6052154
JN		 478}
479
480static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
481{
482 debugfs_remove_recursive(card->debugfs_card_root);
483}
484
6553bf06
LPC		 485
486static void snd_soc_debugfs_init(void)
487{
488 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
489 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
490 pr_warn("ASoC: Failed to create debugfs directory\n");
491 snd_soc_debugfs_root = NULL;
492 return;
493 }
494
495 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
496 &codec_list_fops))
497 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
498
499 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
500 &dai_list_fops))
501 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
502
503 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
504 &platform_list_fops))
505 pr_warn("ASoC: Failed to create platform list debugfs file\n");
506}
507
508static void snd_soc_debugfs_exit(void)
509{
510 debugfs_remove_recursive(snd_soc_debugfs_root);
511}
512
2624d5fa
MB		 513#else
514
81c7cfd1 515#define soc_init_codec_debugfs NULL
b95fccbc 516
81c7cfd1
LPC		 517static inline void soc_init_component_debugfs(
518 struct snd_soc_component *component)
731f1ab2
SG		 519{
520}
521
81c7cfd1
LPC		 522static inline void soc_cleanup_component_debugfs(
523 struct snd_soc_component *component)
731f1ab2
SG		 524{
525}
526
b95fccbc
AL		 527static inline void soc_init_card_debugfs(struct snd_soc_card *card)
528{
529}
530
531static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
532{
533}
6553bf06
LPC		 534
535static inline void snd_soc_debugfs_init(void)
536{
537}
538
539static inline void snd_soc_debugfs_exit(void)
540{
541}
542
2624d5fa
MB		 543#endif
544
47c88fff
LG		 545struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
546 const char *dai_link, int stream)
547{
548 int i;
549
550 for (i = 0; i < card->num_links; i++) {
551 if (card->rtd[i].dai_link->no_pcm &&
552 !strcmp(card->rtd[i].dai_link->name, dai_link))
553 return card->rtd[i].pcm->streams[stream].substream;
554 }
f110bfc7 555 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
47c88fff
LG		 556 return NULL;
557}
558EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
559
560struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
561 const char *dai_link)
562{
563 int i;
564
565 for (i = 0; i < card->num_links; i++) {
566 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
567 return &card->rtd[i];
568 }
f110bfc7 569 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
47c88fff
LG		 570 return NULL;
571}
572EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
573
9d58a077
RF		 574static void codec2codec_close_delayed_work(struct work_struct *work)
575{
576 /* Currently nothing to do for c2c links
577 * Since c2c links are internal nodes in the DAPM graph and
578 * don't interface with the outside world or application layer
579 * we don't have to do any special handling on close.
580 */
581}
582
6f8ab4ac 583#ifdef CONFIG_PM_SLEEP
db2a4165 584/* powers down audio subsystem for suspend */
6f8ab4ac 585int snd_soc_suspend(struct device *dev)
db2a4165 586{
6f8ab4ac 587 struct snd_soc_card *card = dev_get_drvdata(dev);
2eea392d 588 struct snd_soc_codec *codec;
88bd870f 589 int i, j;
db2a4165 590
c5599b87
LPC		 591 /* If the card is not initialized yet there is nothing to do */
592 if (!card->instantiated)
e3509ff0
DM		 593 return 0;
594
6ed25978
AG		 595 /* Due to the resume being scheduled into a workqueue we could
596 * suspend before that's finished - wait for it to complete.
597 */
f0fba2ad
LG		 598 snd_power_lock(card->snd_card);
599 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
600 snd_power_unlock(card->snd_card);
6ed25978
AG		 601
602 /* we're going to block userspace touching us until resume completes */
f0fba2ad 603 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
6ed25978 604
a00f90f9 605 /* mute any active DACs */
f0fba2ad 606 for (i = 0; i < card->num_rtd; i++) {
3efab7dc 607
f0fba2ad 608 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 609 continue;
610
88bd870f
BC		 611 for (j = 0; j < card->rtd[i].num_codecs; j++) {
612 struct snd_soc_dai *dai = card->rtd[i].codec_dais[j];
613 struct snd_soc_dai_driver *drv = dai->driver;
614
615 if (drv->ops->digital_mute && dai->playback_active)
616 drv->ops->digital_mute(dai, 1);
617 }
db2a4165
FM		 618 }
619
4ccab3e7 620 /* suspend all pcms */
f0fba2ad
LG		 621 for (i = 0; i < card->num_rtd; i++) {
622 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 623 continue;
624
f0fba2ad 625 snd_pcm_suspend_all(card->rtd[i].pcm);
3efab7dc 626 }
4ccab3e7 627
87506549 628 if (card->suspend_pre)
70b2ac12 629 card->suspend_pre(card);
db2a4165 630
f0fba2ad
LG		 631 for (i = 0; i < card->num_rtd; i++) {
632 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 633
f0fba2ad 634 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 635 continue;
636
bc263214 637 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
f0fba2ad 638 cpu_dai->driver->suspend(cpu_dai);
db2a4165
FM		 639 }
640
37660b6d
LPC		 641 /* close any waiting streams */
642 for (i = 0; i < card->num_rtd; i++)
43829731 643 flush_delayed_work(&card->rtd[i].delayed_work);
db2a4165 644
f0fba2ad 645 for (i = 0; i < card->num_rtd; i++) {
3efab7dc 646
f0fba2ad 647 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 648 continue;
649
7bd3a6f3
MB		 650 snd_soc_dapm_stream_event(&card->rtd[i],
651 SNDRV_PCM_STREAM_PLAYBACK,
7bd3a6f3 652 SND_SOC_DAPM_STREAM_SUSPEND);
f0fba2ad 653
7bd3a6f3
MB		 654 snd_soc_dapm_stream_event(&card->rtd[i],
655 SNDRV_PCM_STREAM_CAPTURE,
7bd3a6f3 656 SND_SOC_DAPM_STREAM_SUSPEND);
db2a4165
FM		 657 }
658
8be4da29
LPC		 659 /* Recheck all endpoints too, their state is affected by suspend */
660 dapm_mark_endpoints_dirty(card);
e2d32ff6
MB		 661 snd_soc_dapm_sync(&card->dapm);
662
f0fba2ad 663 /* suspend all CODECs */
2eea392d 664 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 665 /* If there are paths active then the CODEC will be held with
666 * bias _ON and should not be suspended. */
a8093297 667 if (!codec->suspended) {
ce6120cc 668 switch (codec->dapm.bias_level) {
f0fba2ad 669 case SND_SOC_BIAS_STANDBY:
125a25da
MB		 670 /*
671 * If the CODEC is capable of idle
672 * bias off then being in STANDBY
673 * means it's doing something,
674 * otherwise fall through.
675 */
676 if (codec->dapm.idle_bias_off) {
677 dev_dbg(codec->dev,
10e8aa9a 678 "ASoC: idle_bias_off CODEC on over suspend\n");
125a25da
MB		 679 break;
680 }
a8093297 681
f0fba2ad 682 case SND_SOC_BIAS_OFF:
a8093297
LPC		 683 if (codec->driver->suspend)
684 codec->driver->suspend(codec);
f0fba2ad 685 codec->suspended = 1;
e2c330b9
LPC		 686 if (codec->component.regmap)
687 regcache_mark_dirty(codec->component.regmap);
988e8cc4
NC		 688 /* deactivate pins to sleep state */
689 pinctrl_pm_select_sleep_state(codec->dev);
f0fba2ad
LG		 690 break;
691 default:
10e8aa9a
MM		 692 dev_dbg(codec->dev,
693 "ASoC: CODEC is on over suspend\n");
f0fba2ad
LG		 694 break;
695 }
1547aba9
MB		 696 }
697 }
db2a4165 698
f0fba2ad
LG		 699 for (i = 0; i < card->num_rtd; i++) {
700 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 701
f0fba2ad 702 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 703 continue;
704
bc263214 705 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
f0fba2ad 706 cpu_dai->driver->suspend(cpu_dai);
988e8cc4
NC		 707
708 /* deactivate pins to sleep state */
709 pinctrl_pm_select_sleep_state(cpu_dai->dev);
db2a4165
FM		 710 }
711
87506549 712 if (card->suspend_post)
70b2ac12 713 card->suspend_post(card);
db2a4165
FM		 714
715 return 0;
716}
6f8ab4ac 717EXPORT_SYMBOL_GPL(snd_soc_suspend);
db2a4165 718
6ed25978
AG		 719/* deferred resume work, so resume can complete before we finished
720 * setting our codec back up, which can be very slow on I2C
721 */
722static void soc_resume_deferred(struct work_struct *work)
db2a4165 723{
f0fba2ad
LG		 724 struct snd_soc_card *card =
725 container_of(work, struct snd_soc_card, deferred_resume_work);
2eea392d 726 struct snd_soc_codec *codec;
88bd870f 727 int i, j;
db2a4165 728
6ed25978
AG		 729 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
730 * so userspace apps are blocked from touching us
731 */
732
f110bfc7 733 dev_dbg(card->dev, "ASoC: starting resume work\n");
6ed25978 734
9949788b 735 /* Bring us up into D2 so that DAPM starts enabling things */
f0fba2ad 736 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
9949788b 737
87506549 738 if (card->resume_pre)
70b2ac12 739 card->resume_pre(card);
db2a4165 740
bc263214 741 /* resume control bus DAIs */
f0fba2ad
LG		 742 for (i = 0; i < card->num_rtd; i++) {
743 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 744
f0fba2ad 745 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 746 continue;
747
bc263214 748 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
f0fba2ad
LG		 749 cpu_dai->driver->resume(cpu_dai);
750 }
751
2eea392d 752 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 753 /* If the CODEC was idle over suspend then it will have been
754 * left with bias OFF or STANDBY and suspended so we must now
755 * resume. Otherwise the suspend was suppressed.
756 */
a8093297 757 if (codec->suspended) {
ce6120cc 758 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 759 case SND_SOC_BIAS_STANDBY:
760 case SND_SOC_BIAS_OFF:
a8093297
LPC		 761 if (codec->driver->resume)
762 codec->driver->resume(codec);
f0fba2ad
LG		 763 codec->suspended = 0;
764 break;
765 default:
10e8aa9a
MM		 766 dev_dbg(codec->dev,
767 "ASoC: CODEC was on over suspend\n");
f0fba2ad
LG		 768 break;
769 }
1547aba9
MB		 770 }
771 }
db2a4165 772
f0fba2ad 773 for (i = 0; i < card->num_rtd; i++) {
3efab7dc 774
f0fba2ad 775 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 776 continue;
777
7bd3a6f3 778 snd_soc_dapm_stream_event(&card->rtd[i],
d9b0951b 779 SNDRV_PCM_STREAM_PLAYBACK,
7bd3a6f3 780 SND_SOC_DAPM_STREAM_RESUME);
f0fba2ad 781
7bd3a6f3 782 snd_soc_dapm_stream_event(&card->rtd[i],
d9b0951b 783 SNDRV_PCM_STREAM_CAPTURE,
7bd3a6f3 784 SND_SOC_DAPM_STREAM_RESUME);
db2a4165
FM		 785 }
786
3ff3f64b 787 /* unmute any active DACs */
f0fba2ad 788 for (i = 0; i < card->num_rtd; i++) {
3efab7dc 789
f0fba2ad 790 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 791 continue;
792
88bd870f
BC		 793 for (j = 0; j < card->rtd[i].num_codecs; j++) {
794 struct snd_soc_dai *dai = card->rtd[i].codec_dais[j];
795 struct snd_soc_dai_driver *drv = dai->driver;
796
797 if (drv->ops->digital_mute && dai->playback_active)
798 drv->ops->digital_mute(dai, 0);
799 }
db2a4165
FM		 800 }
801
f0fba2ad
LG		 802 for (i = 0; i < card->num_rtd; i++) {
803 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 804
f0fba2ad 805 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 806 continue;
807
bc263214 808 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
f0fba2ad 809 cpu_dai->driver->resume(cpu_dai);
db2a4165
FM		 810 }
811
87506549 812 if (card->resume_post)
70b2ac12 813 card->resume_post(card);
db2a4165 814
f110bfc7 815 dev_dbg(card->dev, "ASoC: resume work completed\n");
6ed25978
AG		 816
817 /* userspace can access us now we are back as we were before */
f0fba2ad 818 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
e2d32ff6 819
8be4da29
LPC		 820 /* Recheck all endpoints too, their state is affected by suspend */
821 dapm_mark_endpoints_dirty(card);
e2d32ff6 822 snd_soc_dapm_sync(&card->dapm);
6ed25978
AG		 823}
824
825/* powers up audio subsystem after a suspend */
6f8ab4ac 826int snd_soc_resume(struct device *dev)
6ed25978 827{
6f8ab4ac 828 struct snd_soc_card *card = dev_get_drvdata(dev);
bc263214
LPC		 829 bool bus_control = false;
830 int i;
b9dd94a8 831
c5599b87
LPC		 832 /* If the card is not initialized yet there is nothing to do */
833 if (!card->instantiated)
5ff1ddf2
EM		 834 return 0;
835
988e8cc4
NC		 836 /* activate pins from sleep state */
837 for (i = 0; i < card->num_rtd; i++) {
88bd870f
BC		 838 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
839 struct snd_soc_dai **codec_dais = rtd->codec_dais;
840 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
841 int j;
842
988e8cc4
NC		 843 if (cpu_dai->active)
844 pinctrl_pm_select_default_state(cpu_dai->dev);
88bd870f
BC		 845
846 for (j = 0; j < rtd->num_codecs; j++) {
847 struct snd_soc_dai *codec_dai = codec_dais[j];
848 if (codec_dai->active)
849 pinctrl_pm_select_default_state(codec_dai->dev);
850 }
988e8cc4
NC		 851 }
852
bc263214
LPC		 853 /*
854 * DAIs that also act as the control bus master might have other drivers
855 * hanging off them so need to resume immediately. Other drivers don't
856 * have that problem and may take a substantial amount of time to resume
64ab9baa
MB		 857 * due to I/O costs and anti-pop so handle them out of line.
858 */
f0fba2ad
LG		 859 for (i = 0; i < card->num_rtd; i++) {
860 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
bc263214 861 bus_control |= cpu_dai->driver->bus_control;
82e14e8b 862 }
bc263214
LPC		 863 if (bus_control) {
864 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
82e14e8b
SW		 865 soc_resume_deferred(&card->deferred_resume_work);
866 } else {
f110bfc7 867 dev_dbg(dev, "ASoC: Scheduling resume work\n");
82e14e8b 868 if (!schedule_work(&card->deferred_resume_work))
f110bfc7 869 dev_err(dev, "ASoC: resume work item may be lost\n");
64ab9baa 870 }
6ed25978 871
db2a4165
FM		 872 return 0;
873}
6f8ab4ac 874EXPORT_SYMBOL_GPL(snd_soc_resume);
db2a4165 875#else
6f8ab4ac
MB		 876#define snd_soc_suspend NULL
877#define snd_soc_resume NULL
db2a4165
FM		 878#endif
879
85e7652d 880static const struct snd_soc_dai_ops null_dai_ops = {
02a06d30
BS		 881};
882
65d9361f
LPC		 883static struct snd_soc_component *soc_find_component(
884 const struct device_node *of_node, const char *name)
12023a9a 885{
65d9361f 886 struct snd_soc_component *component;
12023a9a 887
34e81ab4
LPC		 888 lockdep_assert_held(&client_mutex);
889
65d9361f
LPC		 890 list_for_each_entry(component, &component_list, list) {
891 if (of_node) {
892 if (component->dev->of_node == of_node)
893 return component;
894 } else if (strcmp(component->name, name) == 0) {
895 return component;
12023a9a 896 }
12023a9a
MLC		 897 }
898
899 return NULL;
900}
901
14621c7e
LPC		 902static struct snd_soc_dai *snd_soc_find_dai(
903 const struct snd_soc_dai_link_component *dlc)
12023a9a 904{
14621c7e
LPC		 905 struct snd_soc_component *component;
906 struct snd_soc_dai *dai;
12023a9a 907
34e81ab4
LPC		 908 lockdep_assert_held(&client_mutex);
909
14621c7e
LPC		 910 /* Find CPU DAI from registered DAIs*/
911 list_for_each_entry(component, &component_list, list) {
912 if (dlc->of_node && component->dev->of_node != dlc->of_node)
913 continue;
1ffae361 914 if (dlc->name && strcmp(component->name, dlc->name))
14621c7e
LPC		 915 continue;
916 list_for_each_entry(dai, &component->dai_list, list) {
917 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
12023a9a 918 continue;
12023a9a 919
14621c7e 920 return dai;
12023a9a
MLC		 921 }
922 }
923
924 return NULL;
925}
926
f0fba2ad 927static int soc_bind_dai_link(struct snd_soc_card *card, int num)
db2a4165 928{
f0fba2ad
LG		 929 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
930 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
88bd870f 931 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
14621c7e 932 struct snd_soc_dai_link_component cpu_dai_component;
88bd870f 933 struct snd_soc_dai **codec_dais = rtd->codec_dais;
435c5e25 934 struct snd_soc_platform *platform;
848dd8be 935 const char *platform_name;
88bd870f 936 int i;
435c5e25 937
f110bfc7 938 dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
435c5e25 939
14621c7e
LPC		 940 cpu_dai_component.name = dai_link->cpu_name;
941 cpu_dai_component.of_node = dai_link->cpu_of_node;
942 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
943 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
b19e6e7b 944 if (!rtd->cpu_dai) {
f110bfc7 945 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
b19e6e7b
MB		 946 dai_link->cpu_dai_name);
947 return -EPROBE_DEFER;
f0fba2ad
LG		 948 }
949
88bd870f 950 rtd->num_codecs = dai_link->num_codecs;
848dd8be 951
88bd870f
BC		 952 /* Find CODEC from registered CODECs */
953 for (i = 0; i < rtd->num_codecs; i++) {
14621c7e 954 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
88bd870f
BC		 955 if (!codec_dais[i]) {
956 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
957 codecs[i].dai_name);
958 return -EPROBE_DEFER;
959 }
12023a9a
MLC		 960 }
961
88bd870f
BC		 962 /* Single codec links expect codec and codec_dai in runtime data */
963 rtd->codec_dai = codec_dais[0];
964 rtd->codec = rtd->codec_dai->codec;
965
848dd8be
MB		 966 /* if there's no platform we match on the empty platform */
967 platform_name = dai_link->platform_name;
5a504963 968 if (!platform_name && !dai_link->platform_of_node)
848dd8be
MB		 969 platform_name = "snd-soc-dummy";
970
b19e6e7b 971 /* find one from the set of registered platforms */
f0fba2ad 972 list_for_each_entry(platform, &platform_list, list) {
5a504963
SW		 973 if (dai_link->platform_of_node) {
974 if (platform->dev->of_node !=
975 dai_link->platform_of_node)
976 continue;
977 } else {
f4333203 978 if (strcmp(platform->component.name, platform_name))
5a504963
SW		 979 continue;
980 }
2610ab77
SW		 981
982 rtd->platform = platform;
02a06d30 983 }
b19e6e7b 984 if (!rtd->platform) {
f110bfc7 985 dev_err(card->dev, "ASoC: platform %s not registered\n",
f0fba2ad 986 dai_link->platform_name);
b19e6e7b 987 return -EPROBE_DEFER;
f0fba2ad 988 }
b19e6e7b
MB		 989
990 card->num_rtd++;
991
992 return 0;
f0fba2ad
LG		 993}
994
f1d45cc3 995static void soc_remove_component(struct snd_soc_component *component)
d12cd198 996{
70090bbb
LPC		 997 if (!component->probed)
998 return;
d12cd198 999
f1d45cc3
LPC		 1000 /* This is a HACK and will be removed soon */
1001 if (component->codec)
1002 list_del(&component->codec->card_list);
589c3563 1003
f1d45cc3
LPC		 1004 if (component->remove)
1005 component->remove(component);
589c3563 1006
f1d45cc3 1007 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
589c3563 1008
f1d45cc3
LPC		 1009 soc_cleanup_component_debugfs(component);
1010 component->probed = 0;
1011 module_put(component->dev->driver->owner);
589c3563
JN		 1012}
1013
e60cd14f 1014static void soc_remove_dai(struct snd_soc_dai *dai, int order)
f0fba2ad 1015{
f0fba2ad
LG		 1016 int err;
1017
e60cd14f
LPC		 1018 if (dai && dai->probed &&
1019 dai->driver->remove_order == order) {
1020 if (dai->driver->remove) {
1021 err = dai->driver->remove(dai);
f0fba2ad 1022 if (err < 0)
e60cd14f 1023 dev_err(dai->dev,
f110bfc7 1024 "ASoC: failed to remove %s: %d\n",
e60cd14f 1025 dai->name, err);
6b05eda6 1026 }
e60cd14f 1027 dai->probed = 0;
f0fba2ad 1028 }
b0aa88af
MLC		 1029}
1030
1031static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
1032{
1033 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
e60cd14f 1034 int i;
b0aa88af
MLC		 1035
1036 /* unregister the rtd device */
1037 if (rtd->dev_registered) {
b0aa88af
MLC		 1038 device_unregister(rtd->dev);
1039 rtd->dev_registered = 0;
1040 }
1041
1042 /* remove the CODEC DAI */
88bd870f 1043 for (i = 0; i < rtd->num_codecs; i++)
e60cd14f 1044 soc_remove_dai(rtd->codec_dais[i], order);
6b05eda6 1045
e60cd14f 1046 soc_remove_dai(rtd->cpu_dai, order);
f0fba2ad 1047}
db2a4165 1048
62ae68fa
SW		 1049static void soc_remove_link_components(struct snd_soc_card *card, int num,
1050 int order)
1051{
1052 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1053 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
62ae68fa 1054 struct snd_soc_platform *platform = rtd->platform;
61aca564 1055 struct snd_soc_component *component;
88bd870f 1056 int i;
62ae68fa
SW		 1057
1058 /* remove the platform */
70090bbb 1059 if (platform && platform->component.driver->remove_order == order)
f1d45cc3 1060 soc_remove_component(&platform->component);
62ae68fa
SW		 1061
1062 /* remove the CODEC-side CODEC */
88bd870f 1063 for (i = 0; i < rtd->num_codecs; i++) {
61aca564 1064 component = rtd->codec_dais[i]->component;
70090bbb 1065 if (component->driver->remove_order == order)
61aca564 1066 soc_remove_component(component);
62ae68fa
SW		 1067 }
1068
1069 /* remove any CPU-side CODEC */
1070 if (cpu_dai) {
70090bbb 1071 if (cpu_dai->component->driver->remove_order == order)
61aca564 1072 soc_remove_component(cpu_dai->component);
62ae68fa
SW		 1073 }
1074}
1075
0671fd8e
KM		 1076static void soc_remove_dai_links(struct snd_soc_card *card)
1077{
0168bf0d 1078 int dai, order;
0671fd8e 1079
0168bf0d
LG		 1080 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1081 order++) {
1082 for (dai = 0; dai < card->num_rtd; dai++)
62ae68fa
SW		 1083 soc_remove_link_dais(card, dai, order);
1084 }
1085
1086 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1087 order++) {
1088 for (dai = 0; dai < card->num_rtd; dai++)
1089 soc_remove_link_components(card, dai, order);
0168bf0d 1090 }
62ae68fa 1091
0671fd8e
KM		 1092 card->num_rtd = 0;
1093}
1094
ead9b919 1095static void soc_set_name_prefix(struct snd_soc_card *card,
94f99c87 1096 struct snd_soc_component *component)
ead9b919
JN		 1097{
1098 int i;
1099
ff819b83 1100 if (card->codec_conf == NULL)
ead9b919
JN		 1101 return;
1102
ff819b83
DP		 1103 for (i = 0; i < card->num_configs; i++) {
1104 struct snd_soc_codec_conf *map = &card->codec_conf[i];
94f99c87 1105 if (map->of_node && component->dev->of_node != map->of_node)
3ca041ed 1106 continue;
94f99c87 1107 if (map->dev_name && strcmp(component->name, map->dev_name))
3ca041ed 1108 continue;
94f99c87 1109 component->name_prefix = map->name_prefix;
3ca041ed 1110 break;
ead9b919
JN		 1111 }
1112}
1113
f1d45cc3
LPC		 1114static int soc_probe_component(struct snd_soc_card *card,
1115 struct snd_soc_component *component)
589c3563 1116{
f1d45cc3 1117 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
888df395 1118 struct snd_soc_dai *dai;
f1d45cc3 1119 int ret;
589c3563 1120
70090bbb
LPC		 1121 if (component->probed)
1122 return 0;
589c3563 1123
f1d45cc3
LPC		 1124 component->card = card;
1125 dapm->card = card;
1126 soc_set_name_prefix(card, component);
589c3563 1127
f1d45cc3 1128 if (!try_module_get(component->dev->driver->owner))
70d29331
JN		 1129 return -ENODEV;
1130
f1d45cc3 1131 soc_init_component_debugfs(component);
d5d1e0be 1132
f1d45cc3
LPC		 1133 if (component->dapm_widgets) {
1134 ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
1135 component->num_dapm_widgets);
b318ad50
NP		 1136
1137 if (ret != 0) {
f1d45cc3 1138 dev_err(component->dev,
b318ad50
NP		 1139 "Failed to create new controls %d\n", ret);
1140 goto err_probe;
1141 }
1142 }
77530150 1143
0634814f
LPC		 1144 list_for_each_entry(dai, &component->dai_list, list) {
1145 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
261edc70 1146 if (ret != 0) {
0634814f 1147 dev_err(component->dev,
261edc70
NP		 1148 "Failed to create DAI widgets %d\n", ret);
1149 goto err_probe;
1150 }
1151 }
888df395 1152
f1d45cc3
LPC		 1153 if (component->probe) {
1154 ret = component->probe(component);
589c3563 1155 if (ret < 0) {
f1d45cc3
LPC		 1156 dev_err(component->dev,
1157 "ASoC: failed to probe component %d\n", ret);
70d29331 1158 goto err_probe;
589c3563 1159 }
cb2cf612 1160
f1d45cc3
LPC		 1161 WARN(dapm->idle_bias_off &&
1162 dapm->bias_level != SND_SOC_BIAS_OFF,
1163 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1164 component->name);
be09ad90
LG		 1165 }
1166
f1d45cc3
LPC		 1167 if (component->controls)
1168 snd_soc_add_component_controls(component, component->controls,
1169 component->num_controls);
1170 if (component->dapm_routes)
1171 snd_soc_dapm_add_routes(dapm, component->dapm_routes,
1172 component->num_dapm_routes);
3fec6b6d 1173
f1d45cc3
LPC		 1174 component->probed = 1;
1175 list_add(&dapm->list, &card->dapm_list);
cb2cf612 1176
f1d45cc3
LPC		 1177 /* This is a HACK and will be removed soon */
1178 if (component->codec)
1179 list_add(&component->codec->card_list, &card->codec_dev_list);
956245e9
LG		 1180
1181 return 0;
1182
1183err_probe:
f1d45cc3
LPC		 1184 soc_cleanup_component_debugfs(component);
1185 module_put(component->dev->driver->owner);
956245e9
LG		 1186
1187 return ret;
1188}
1189
36ae1a96
MB		 1190static void rtd_release(struct device *dev)
1191{
1192 kfree(dev);
1193}
f0fba2ad 1194
5f3484ac
LPC		 1195static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1196 const char *name)
503ae5e0 1197{
589c3563
JN		 1198 int ret = 0;
1199
589c3563 1200 /* register the rtd device */
36ae1a96
MB		 1201 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1202 if (!rtd->dev)
1203 return -ENOMEM;
1204 device_initialize(rtd->dev);
5f3484ac 1205 rtd->dev->parent = rtd->card->dev;
36ae1a96 1206 rtd->dev->release = rtd_release;
d29697dc 1207 rtd->dev->groups = soc_dev_attr_groups;
f294afed 1208 dev_set_name(rtd->dev, "%s", name);
36ae1a96 1209 dev_set_drvdata(rtd->dev, rtd);
b8c0dab9 1210 mutex_init(&rtd->pcm_mutex);
01d7584c
LG		 1211 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1212 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1213 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1214 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
36ae1a96 1215 ret = device_add(rtd->dev);
589c3563 1216 if (ret < 0) {
865df9cb
CL		 1217 /* calling put_device() here to free the rtd->dev */
1218 put_device(rtd->dev);
5f3484ac 1219 dev_err(rtd->card->dev,
f110bfc7 1220 "ASoC: failed to register runtime device: %d\n", ret);
589c3563
JN		 1221 return ret;
1222 }
1223 rtd->dev_registered = 1;
589c3563
JN		 1224 return 0;
1225}
1226
62ae68fa
SW		 1227static int soc_probe_link_components(struct snd_soc_card *card, int num,
1228 int order)
1229{
1230 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
62ae68fa 1231 struct snd_soc_platform *platform = rtd->platform;
f1d45cc3 1232 struct snd_soc_component *component;
88bd870f 1233 int i, ret;
62ae68fa
SW		 1234
1235 /* probe the CPU-side component, if it is a CODEC */
61aca564 1236 component = rtd->cpu_dai->component;
70090bbb 1237 if (component->driver->probe_order == order) {
61aca564 1238 ret = soc_probe_component(card, component);
62ae68fa
SW		 1239 if (ret < 0)
1240 return ret;
1241 }
1242
88bd870f
BC		 1243 /* probe the CODEC-side components */
1244 for (i = 0; i < rtd->num_codecs; i++) {
61aca564 1245 component = rtd->codec_dais[i]->component;
70090bbb 1246 if (component->driver->probe_order == order) {
f1d45cc3 1247 ret = soc_probe_component(card, component);
88bd870f
BC		 1248 if (ret < 0)
1249 return ret;
1250 }
62ae68fa
SW		 1251 }
1252
1253 /* probe the platform */
70090bbb 1254 if (platform->component.driver->probe_order == order) {
f1d45cc3 1255 ret = soc_probe_component(card, &platform->component);
62ae68fa
SW		 1256 if (ret < 0)
1257 return ret;
1258 }
1259
1260 return 0;
1261}
1262
8e2be562 1263static int soc_probe_dai(struct snd_soc_dai *dai, int order)
b0aa88af
MLC		 1264{
1265 int ret;
1266
8e2be562
LPC		 1267 if (!dai->probed && dai->driver->probe_order == order) {
1268 if (dai->driver->probe) {
1269 ret = dai->driver->probe(dai);
b0aa88af 1270 if (ret < 0) {
8e2be562
LPC		 1271 dev_err(dai->dev,
1272 "ASoC: failed to probe DAI %s: %d\n",
1273 dai->name, ret);
b0aa88af
MLC		 1274 return ret;
1275 }
1276 }
1277
8e2be562 1278 dai->probed = 1;
b0aa88af
MLC		 1279 }
1280
1281 return 0;
1282}
1283
2436a723
MLC		 1284static int soc_link_dai_widgets(struct snd_soc_card *card,
1285 struct snd_soc_dai_link *dai_link,
3f901a02 1286 struct snd_soc_pcm_runtime *rtd)
2436a723 1287{
3f901a02
BC		 1288 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1289 struct snd_soc_dai *codec_dai = rtd->codec_dai;
2436a723
MLC		 1290 struct snd_soc_dapm_widget *play_w, *capture_w;
1291 int ret;
1292
88bd870f
BC		 1293 if (rtd->num_codecs > 1)
1294 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1295
2436a723
MLC		 1296 /* link the DAI widgets */
1297 play_w = codec_dai->playback_widget;
1298 capture_w = cpu_dai->capture_widget;
1299 if (play_w && capture_w) {
1300 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
c6615082
NO		 1301 dai_link->num_params, capture_w,
1302 play_w);
2436a723
MLC		 1303 if (ret != 0) {
1304 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1305 play_w->name, capture_w->name, ret);
1306 return ret;
1307 }
1308 }
1309
1310 play_w = cpu_dai->playback_widget;
1311 capture_w = codec_dai->capture_widget;
1312 if (play_w && capture_w) {
1313 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
c6615082
NO		 1314 dai_link->num_params, capture_w,
1315 play_w);
2436a723
MLC		 1316 if (ret != 0) {
1317 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1318 play_w->name, capture_w->name, ret);
1319 return ret;
1320 }
1321 }
1322
1323 return 0;
1324}
1325
62ae68fa 1326static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
f0fba2ad
LG		 1327{
1328 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1329 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
c74184ed 1330 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
88bd870f 1331 int i, ret;
f0fba2ad 1332
f110bfc7 1333 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
0168bf0d 1334 card->name, num, order);
f0fba2ad 1335
f0fba2ad
LG		 1336 /* set default power off timeout */
1337 rtd->pmdown_time = pmdown_time;
1338
8e2be562
LPC		 1339 ret = soc_probe_dai(cpu_dai, order);
1340 if (ret)
1341 return ret;
db2a4165 1342
f0fba2ad 1343 /* probe the CODEC DAI */
88bd870f 1344 for (i = 0; i < rtd->num_codecs; i++) {
8e2be562 1345 ret = soc_probe_dai(rtd->codec_dais[i], order);
88bd870f
BC		 1346 if (ret)
1347 return ret;
1348 }
fe3e78e0 1349
0168bf0d
LG		 1350 /* complete DAI probe during last probe */
1351 if (order != SND_SOC_COMP_ORDER_LAST)
1352 return 0;
1353
5f3484ac
LPC		 1354 /* do machine specific initialization */
1355 if (dai_link->init) {
1356 ret = dai_link->init(rtd);
1357 if (ret < 0) {
1358 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1359 dai_link->name, ret);
1360 return ret;
1361 }
1362 }
1363
a5053a8e
KM		 1364 if (dai_link->dai_fmt)
1365 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1366
5f3484ac 1367 ret = soc_post_component_init(rtd, dai_link->name);
589c3563 1368 if (ret)
f0fba2ad 1369 return ret;
fe3e78e0 1370
5f3484ac
LPC		 1371#ifdef CONFIG_DEBUG_FS
1372 /* add DPCM sysfs entries */
2e55b90a
LPC		 1373 if (dai_link->dynamic)
1374 soc_dpcm_debugfs_add(rtd);
5f3484ac
LPC		 1375#endif
1376
1245b700
NK		 1377 if (cpu_dai->driver->compress_dai) {
1378 /*create compress_device"*/
1379 ret = soc_new_compress(rtd, num);
c74184ed 1380 if (ret < 0) {
f110bfc7 1381 dev_err(card->dev, "ASoC: can't create compress %s\n",
1245b700 1382 dai_link->stream_name);
c74184ed
MB		 1383 return ret;
1384 }
1385 } else {
1245b700
NK		 1386
1387 if (!dai_link->params) {
1388 /* create the pcm */
1389 ret = soc_new_pcm(rtd, num);
1390 if (ret < 0) {
f110bfc7 1391 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1245b700 1392 dai_link->stream_name, ret);
c74184ed
MB		 1393 return ret;
1394 }
1245b700 1395 } else {
9d58a077
RF		 1396 INIT_DELAYED_WORK(&rtd->delayed_work,
1397 codec2codec_close_delayed_work);
1398
1245b700 1399 /* link the DAI widgets */
3f901a02 1400 ret = soc_link_dai_widgets(card, dai_link, rtd);
2436a723
MLC		 1401 if (ret)
1402 return ret;
c74184ed 1403 }
f0fba2ad
LG		 1404 }
1405
f0fba2ad
LG		 1406 return 0;
1407}
1408
44c69bb1 1409static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
3ca041ed 1410{
44c69bb1 1411 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
3ca041ed 1412 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
65d9361f 1413 const char *name = aux_dev->codec_name;
3ca041ed 1414
65d9361f
LPC		 1415 rtd->component = soc_find_component(aux_dev->codec_of_node, name);
1416 if (!rtd->component) {
3ca041ed 1417 if (aux_dev->codec_of_node)
65d9361f 1418 name = of_node_full_name(aux_dev->codec_of_node);
3ca041ed 1419
65d9361f 1420 dev_err(card->dev, "ASoC: %s not registered\n", name);
3ca041ed
SR		 1421 return -EPROBE_DEFER;
1422 }
fb099cb7 1423
65d9361f
LPC		 1424 /*
1425 * Some places still reference rtd->codec, so we have to keep that
1426 * initialized if the component is a CODEC. Once all those references
1427 * have been removed, this code can be removed as well.
1428 */
1429 rtd->codec = rtd->component->codec;
1430
44c69bb1 1431 return 0;
b19e6e7b
MB		 1432}
1433
2eea392d
JN		 1434static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1435{
44c69bb1 1436 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
2eea392d 1437 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
44c69bb1 1438 int ret;
3ca041ed 1439
65d9361f 1440 ret = soc_probe_component(card, rtd->component);
2eea392d 1441 if (ret < 0)
589c3563 1442 return ret;
2eea392d 1443
5f3484ac
LPC		 1444 /* do machine specific initialization */
1445 if (aux_dev->init) {
57bf7726 1446 ret = aux_dev->init(rtd->component);
5f3484ac
LPC		 1447 if (ret < 0) {
1448 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1449 aux_dev->name, ret);
1450 return ret;
1451 }
1452 }
2eea392d 1453
5f3484ac 1454 return soc_post_component_init(rtd, aux_dev->name);
2eea392d
JN		 1455}
1456
1457static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1458{
1459 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
65d9361f 1460 struct snd_soc_component *component = rtd->component;
2eea392d
JN		 1461
1462 /* unregister the rtd device */
1463 if (rtd->dev_registered) {
d3bf1561 1464 device_unregister(rtd->dev);
2eea392d
JN		 1465 rtd->dev_registered = 0;
1466 }
1467
65d9361f
LPC		 1468 if (component && component->probed)
1469 soc_remove_component(component);
2eea392d
JN		 1470}
1471
f90fb3f7 1472static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
fdf0f54d
DP		 1473{
1474 int ret;
1475
1476 if (codec->cache_init)
1477 return 0;
1478
fdf0f54d
DP		 1479 ret = snd_soc_cache_init(codec);
1480 if (ret < 0) {
10e8aa9a
MM		 1481 dev_err(codec->dev,
1482 "ASoC: Failed to set cache compression type: %d\n",
1483 ret);
fdf0f54d
DP		 1484 return ret;
1485 }
1486 codec->cache_init = 1;
1487 return 0;
1488}
1489
ce64c8b9
LPC		 1490/**
1491 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1492 * @rtd: The runtime for which the DAI link format should be changed
1493 * @dai_fmt: The new DAI link format
1494 *
1495 * This function updates the DAI link format for all DAIs connected to the DAI
1496 * link for the specified runtime.
1497 *
1498 * Note: For setups with a static format set the dai_fmt field in the
1499 * corresponding snd_dai_link struct instead of using this function.
1500 *
1501 * Returns 0 on success, otherwise a negative error code.
1502 */
1503int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1504 unsigned int dai_fmt)
1505{
1506 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1507 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1508 unsigned int i;
1509 int ret;
1510
1511 for (i = 0; i < rtd->num_codecs; i++) {
1512 struct snd_soc_dai *codec_dai = codec_dais[i];
1513
1514 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1515 if (ret != 0 && ret != -ENOTSUPP) {
1516 dev_warn(codec_dai->dev,
1517 "ASoC: Failed to set DAI format: %d\n", ret);
1518 return ret;
1519 }
1520 }
1521
1522 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1523 if (cpu_dai->codec) {
1524 unsigned int inv_dai_fmt;
1525
1526 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1527 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1528 case SND_SOC_DAIFMT_CBM_CFM:
1529 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1530 break;
1531 case SND_SOC_DAIFMT_CBM_CFS:
1532 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1533 break;
1534 case SND_SOC_DAIFMT_CBS_CFM:
1535 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1536 break;
1537 case SND_SOC_DAIFMT_CBS_CFS:
1538 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1539 break;
1540 }
1541
1542 dai_fmt = inv_dai_fmt;
1543 }
1544
1545 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1546 if (ret != 0 && ret != -ENOTSUPP) {
1547 dev_warn(cpu_dai->dev,
1548 "ASoC: Failed to set DAI format: %d\n", ret);
1549 return ret;
1550 }
1551
1552 return 0;
1553}
ddaca25a 1554EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
ce64c8b9 1555
b19e6e7b 1556static int snd_soc_instantiate_card(struct snd_soc_card *card)
f0fba2ad 1557{
fdf0f54d 1558 struct snd_soc_codec *codec;
ce64c8b9 1559 int ret, i, order;
fe3e78e0 1560
34e81ab4 1561 mutex_lock(&client_mutex);
01b9d99a 1562 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
dbe21408 1563
f0fba2ad 1564 /* bind DAIs */
b19e6e7b
MB		 1565 for (i = 0; i < card->num_links; i++) {
1566 ret = soc_bind_dai_link(card, i);
1567 if (ret != 0)
1568 goto base_error;
1569 }
fe3e78e0 1570
44c69bb1 1571 /* bind aux_devs too */
b19e6e7b 1572 for (i = 0; i < card->num_aux_devs; i++) {
44c69bb1 1573 ret = soc_bind_aux_dev(card, i);
b19e6e7b
MB		 1574 if (ret != 0)
1575 goto base_error;
f0fba2ad 1576 }
435c5e25 1577
fdf0f54d
DP		 1578 /* initialize the register cache for each available codec */
1579 list_for_each_entry(codec, &codec_list, list) {
1580 if (codec->cache_init)
1581 continue;
f90fb3f7 1582 ret = snd_soc_init_codec_cache(codec);
b19e6e7b
MB		 1583 if (ret < 0)
1584 goto base_error;
fdf0f54d
DP		 1585 }
1586
f0fba2ad 1587 /* card bind complete so register a sound card */
102b5a8d 1588 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
f0fba2ad
LG		 1589 card->owner, 0, &card->snd_card);
1590 if (ret < 0) {
10e8aa9a
MM		 1591 dev_err(card->dev,
1592 "ASoC: can't create sound card for card %s: %d\n",
1593 card->name, ret);
b19e6e7b 1594 goto base_error;
f0fba2ad 1595 }
f0fba2ad 1596
0757d834
LPC		 1597 soc_init_card_debugfs(card);
1598
e37a4970
MB		 1599 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1600 card->dapm.dev = card->dev;
1601 card->dapm.card = card;
1602 list_add(&card->dapm.list, &card->dapm_list);
1603
d5d1e0be
LPC		 1604#ifdef CONFIG_DEBUG_FS
1605 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1606#endif
1607
88ee1c61 1608#ifdef CONFIG_PM_SLEEP
f0fba2ad
LG		 1609 /* deferred resume work */
1610 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1611#endif
db2a4165 1612
9a841ebb
MB		 1613 if (card->dapm_widgets)
1614 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1615 card->num_dapm_widgets);
1616
f23e860e
NC		 1617 if (card->of_dapm_widgets)
1618 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
1619 card->num_of_dapm_widgets);
1620
f0fba2ad
LG		 1621 /* initialise the sound card only once */
1622 if (card->probe) {
e7361ec4 1623 ret = card->probe(card);
f0fba2ad
LG		 1624 if (ret < 0)
1625 goto card_probe_error;
1626 }
fe3e78e0 1627
62ae68fa 1628 /* probe all components used by DAI links on this card */
0168bf0d
LG		 1629 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1630 order++) {
1631 for (i = 0; i < card->num_links; i++) {
62ae68fa 1632 ret = soc_probe_link_components(card, i, order);
0168bf0d 1633 if (ret < 0) {
f110bfc7
LG		 1634 dev_err(card->dev,
1635 "ASoC: failed to instantiate card %d\n",
1636 ret);
62ae68fa
SW		 1637 goto probe_dai_err;
1638 }
1639 }
1640 }
1641
1642 /* probe all DAI links on this card */
1643 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1644 order++) {
1645 for (i = 0; i < card->num_links; i++) {
1646 ret = soc_probe_link_dais(card, i, order);
1647 if (ret < 0) {
f110bfc7
LG		 1648 dev_err(card->dev,
1649 "ASoC: failed to instantiate card %d\n",
1650 ret);
0168bf0d
LG		 1651 goto probe_dai_err;
1652 }
f0fba2ad
LG		 1653 }
1654 }
db2a4165 1655
2eea392d
JN		 1656 for (i = 0; i < card->num_aux_devs; i++) {
1657 ret = soc_probe_aux_dev(card, i);
1658 if (ret < 0) {
f110bfc7
LG		 1659 dev_err(card->dev,
1660 "ASoC: failed to add auxiliary devices %d\n",
1661 ret);
2eea392d
JN		 1662 goto probe_aux_dev_err;
1663 }
1664 }
1665
888df395 1666 snd_soc_dapm_link_dai_widgets(card);
b893ea5f 1667 snd_soc_dapm_connect_dai_link_widgets(card);
888df395 1668
b7af1daf 1669 if (card->controls)
022658be 1670 snd_soc_add_card_controls(card, card->controls, card->num_controls);
b7af1daf 1671
b8ad29de
MB		 1672 if (card->dapm_routes)
1673 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1674 card->num_dapm_routes);
1675
f23e860e
NC		 1676 if (card->of_dapm_routes)
1677 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
1678 card->num_of_dapm_routes);
75d9ac46 1679
f0fba2ad 1680 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
f0fba2ad 1681 "%s", card->name);
22de71ba
LG		 1682 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1683 "%s", card->long_name ? card->long_name : card->name);
f0e8ed85
MB		 1684 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1685 "%s", card->driver_name ? card->driver_name : card->name);
1686 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1687 switch (card->snd_card->driver[i]) {
1688 case '_':
1689 case '-':
1690 case '\0':
1691 break;
1692 default:
1693 if (!isalnum(card->snd_card->driver[i]))
1694 card->snd_card->driver[i] = '_';
1695 break;
1696 }
1697 }
f0fba2ad 1698
28e9ad92
MB		 1699 if (card->late_probe) {
1700 ret = card->late_probe(card);
1701 if (ret < 0) {
f110bfc7 1702 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
28e9ad92
MB		 1703 card->name, ret);
1704 goto probe_aux_dev_err;
1705 }
1706 }
1707
824ef826 1708 snd_soc_dapm_new_widgets(card);
8c193b8d 1709
f0fba2ad
LG		 1710 ret = snd_card_register(card->snd_card);
1711 if (ret < 0) {
f110bfc7
LG		 1712 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
1713 ret);
6b3ed785 1714 goto probe_aux_dev_err;
db2a4165
FM		 1715 }
1716
f0fba2ad 1717 card->instantiated = 1;
4f4c0072 1718 snd_soc_dapm_sync(&card->dapm);
f0fba2ad 1719 mutex_unlock(&card->mutex);
34e81ab4 1720 mutex_unlock(&client_mutex);
b19e6e7b
MB		 1721
1722 return 0;
f0fba2ad 1723
2eea392d
JN		 1724probe_aux_dev_err:
1725 for (i = 0; i < card->num_aux_devs; i++)
1726 soc_remove_aux_dev(card, i);
1727
f0fba2ad 1728probe_dai_err:
0671fd8e 1729 soc_remove_dai_links(card);
f0fba2ad
LG		 1730
1731card_probe_error:
87506549 1732 if (card->remove)
e7361ec4 1733 card->remove(card);
f0fba2ad 1734
0757d834 1735 soc_cleanup_card_debugfs(card);
f0fba2ad
LG		 1736 snd_card_free(card->snd_card);
1737
b19e6e7b 1738base_error:
f0fba2ad 1739 mutex_unlock(&card->mutex);
34e81ab4 1740 mutex_unlock(&client_mutex);
db2a4165 1741
b19e6e7b 1742 return ret;
435c5e25
MB		 1743}
1744
1745/* probes a new socdev */
1746static int soc_probe(struct platform_device *pdev)
1747{
f0fba2ad 1748 struct snd_soc_card *card = platform_get_drvdata(pdev);
435c5e25 1749
70a7ca34
VK		 1750 /*
1751 * no card, so machine driver should be registering card
1752 * we should not be here in that case so ret error
1753 */
1754 if (!card)
1755 return -EINVAL;
1756
fe4085e8 1757 dev_warn(&pdev->dev,
f110bfc7 1758 "ASoC: machine %s should use snd_soc_register_card()\n",
fe4085e8
MB		 1759 card->name);
1760
435c5e25
MB		 1761 /* Bodge while we unpick instantiation */
1762 card->dev = &pdev->dev;
f0fba2ad 1763
28d528c8 1764 return snd_soc_register_card(card);
db2a4165
FM		 1765}
1766
b0e26485 1767static int soc_cleanup_card_resources(struct snd_soc_card *card)
db2a4165
FM		 1768{
1769 int i;
db2a4165 1770
b0e26485
VK		 1771 /* make sure any delayed work runs */
1772 for (i = 0; i < card->num_rtd; i++) {
1773 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
43829731 1774 flush_delayed_work(&rtd->delayed_work);
b0e26485 1775 }
914dc182 1776
b0e26485
VK		 1777 /* remove auxiliary devices */
1778 for (i = 0; i < card->num_aux_devs; i++)
1779 soc_remove_aux_dev(card, i);
db2a4165 1780
b0e26485 1781 /* remove and free each DAI */
0671fd8e 1782 soc_remove_dai_links(card);
2eea392d 1783
b0e26485 1784 soc_cleanup_card_debugfs(card);
f0fba2ad 1785
b0e26485
VK		 1786 /* remove the card */
1787 if (card->remove)
e7361ec4 1788 card->remove(card);
a6052154 1789
0aaae527
LPC		 1790 snd_soc_dapm_free(&card->dapm);
1791
b0e26485
VK		 1792 snd_card_free(card->snd_card);
1793 return 0;
1794
1795}
1796
1797/* removes a socdev */
1798static int soc_remove(struct platform_device *pdev)
1799{
1800 struct snd_soc_card *card = platform_get_drvdata(pdev);
db2a4165 1801
c5af3a2e 1802 snd_soc_unregister_card(card);
db2a4165
FM		 1803 return 0;
1804}
1805
6f8ab4ac 1806int snd_soc_poweroff(struct device *dev)
51737470 1807{
6f8ab4ac 1808 struct snd_soc_card *card = dev_get_drvdata(dev);
f0fba2ad 1809 int i;
51737470
MB		 1810
1811 if (!card->instantiated)
416356fc 1812 return 0;
51737470
MB		 1813
1814 /* Flush out pmdown_time work - we actually do want to run it
1815 * now, we're shutting down so no imminent restart. */
f0fba2ad
LG		 1816 for (i = 0; i < card->num_rtd; i++) {
1817 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
43829731 1818 flush_delayed_work(&rtd->delayed_work);
f0fba2ad 1819 }
51737470 1820
f0fba2ad 1821 snd_soc_dapm_shutdown(card);
416356fc 1822
988e8cc4
NC		 1823 /* deactivate pins to sleep state */
1824 for (i = 0; i < card->num_rtd; i++) {
88bd870f
BC		 1825 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1826 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1827 int j;
1828
988e8cc4 1829 pinctrl_pm_select_sleep_state(cpu_dai->dev);
88bd870f
BC		 1830 for (j = 0; j < rtd->num_codecs; j++) {
1831 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
1832 pinctrl_pm_select_sleep_state(codec_dai->dev);
1833 }
988e8cc4
NC		 1834 }
1835
416356fc 1836 return 0;
51737470 1837}
6f8ab4ac 1838EXPORT_SYMBOL_GPL(snd_soc_poweroff);
51737470 1839
6f8ab4ac 1840const struct dev_pm_ops snd_soc_pm_ops = {
b1dd5897
VK		 1841 .suspend = snd_soc_suspend,
1842 .resume = snd_soc_resume,
1843 .freeze = snd_soc_suspend,
1844 .thaw = snd_soc_resume,
6f8ab4ac 1845 .poweroff = snd_soc_poweroff,
b1dd5897 1846 .restore = snd_soc_resume,
416356fc 1847};
deb2607e 1848EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
416356fc 1849
db2a4165
FM		 1850/* ASoC platform driver */
1851static struct platform_driver soc_driver = {
1852 .driver = {
1853 .name = "soc-audio",
6f8ab4ac 1854 .pm = &snd_soc_pm_ops,
db2a4165
FM		 1855 },
1856 .probe = soc_probe,
1857 .remove = soc_remove,
db2a4165
FM		 1858};
1859
db2a4165
FM		 1860/**
1861 * snd_soc_cnew - create new control
1862 * @_template: control template
1863 * @data: control private data
ac11a2b3 1864 * @long_name: control long name
efb7ac3f 1865 * @prefix: control name prefix
db2a4165
FM		 1866 *
1867 * Create a new mixer control from a template control.
1868 *
1869 * Returns 0 for success, else error.
1870 */
1871struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
3056557f 1872 void *data, const char *long_name,
efb7ac3f 1873 const char *prefix)
db2a4165
FM		 1874{
1875 struct snd_kcontrol_new template;
efb7ac3f
MB		 1876 struct snd_kcontrol *kcontrol;
1877 char *name = NULL;
db2a4165
FM		 1878
1879 memcpy(&template, _template, sizeof(template));
db2a4165
FM		 1880 template.index = 0;
1881
efb7ac3f
MB		 1882 if (!long_name)
1883 long_name = template.name;
1884
1885 if (prefix) {
2b581074 1886 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
efb7ac3f
MB		 1887 if (!name)
1888 return NULL;
1889
efb7ac3f
MB		 1890 template.name = name;
1891 } else {
1892 template.name = long_name;
1893 }
1894
1895 kcontrol = snd_ctl_new1(&template, data);
1896
1897 kfree(name);
1898
1899 return kcontrol;
db2a4165
FM		 1900}
1901EXPORT_SYMBOL_GPL(snd_soc_cnew);
1902
022658be
LG		 1903static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
1904 const struct snd_kcontrol_new *controls, int num_controls,
1905 const char *prefix, void *data)
1906{
1907 int err, i;
1908
1909 for (i = 0; i < num_controls; i++) {
1910 const struct snd_kcontrol_new *control = &controls[i];
1911 err = snd_ctl_add(card, snd_soc_cnew(control, data,
1912 control->name, prefix));
1913 if (err < 0) {
f110bfc7
LG		 1914 dev_err(dev, "ASoC: Failed to add %s: %d\n",
1915 control->name, err);
022658be
LG		 1916 return err;
1917 }
1918 }
1919
1920 return 0;
1921}
1922
4fefd698
DP		 1923struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
1924 const char *name)
1925{
1926 struct snd_card *card = soc_card->snd_card;
1927 struct snd_kcontrol *kctl;
1928
1929 if (unlikely(!name))
1930 return NULL;
1931
1932 list_for_each_entry(kctl, &card->controls, list)
1933 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
1934 return kctl;
1935 return NULL;
1936}
1937EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
1938
0f2780ad
LPC		 1939/**
1940 * snd_soc_add_component_controls - Add an array of controls to a component.
1941 *
1942 * @component: Component to add controls to
1943 * @controls: Array of controls to add
1944 * @num_controls: Number of elements in the array
1945 *
1946 * Return: 0 for success, else error.
1947 */
1948int snd_soc_add_component_controls(struct snd_soc_component *component,
1949 const struct snd_kcontrol_new *controls, unsigned int num_controls)
1950{
1951 struct snd_card *card = component->card->snd_card;
1952
1953 return snd_soc_add_controls(card, component->dev, controls,
1954 num_controls, component->name_prefix, component);
1955}
1956EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
1957
3e8e1952 1958/**
022658be
LG		 1959 * snd_soc_add_codec_controls - add an array of controls to a codec.
1960 * Convenience function to add a list of controls. Many codecs were
3e8e1952
IM		 1961 * duplicating this code.
1962 *
1963 * @codec: codec to add controls to
1964 * @controls: array of controls to add
1965 * @num_controls: number of elements in the array
1966 *
1967 * Return 0 for success, else error.
1968 */
022658be 1969int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
0f2780ad 1970 const struct snd_kcontrol_new *controls, unsigned int num_controls)
3e8e1952 1971{
0f2780ad
LPC		 1972 return snd_soc_add_component_controls(&codec->component, controls,
1973 num_controls);
3e8e1952 1974}
022658be 1975EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
3e8e1952 1976
a491a5c8
LG		 1977/**
1978 * snd_soc_add_platform_controls - add an array of controls to a platform.
022658be 1979 * Convenience function to add a list of controls.
a491a5c8
LG		 1980 *
1981 * @platform: platform to add controls to
1982 * @controls: array of controls to add
1983 * @num_controls: number of elements in the array
1984 *
1985 * Return 0 for success, else error.
1986 */
1987int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
0f2780ad 1988 const struct snd_kcontrol_new *controls, unsigned int num_controls)
a491a5c8 1989{
0f2780ad
LPC		 1990 return snd_soc_add_component_controls(&platform->component, controls,
1991 num_controls);
a491a5c8
LG		 1992}
1993EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
1994
022658be
LG		 1995/**
1996 * snd_soc_add_card_controls - add an array of controls to a SoC card.
1997 * Convenience function to add a list of controls.
1998 *
1999 * @soc_card: SoC card to add controls to
2000 * @controls: array of controls to add
2001 * @num_controls: number of elements in the array
2002 *
2003 * Return 0 for success, else error.
2004 */
2005int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2006 const struct snd_kcontrol_new *controls, int num_controls)
2007{
2008 struct snd_card *card = soc_card->snd_card;
2009
2010 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2011 NULL, soc_card);
2012}
2013EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2014
2015/**
2016 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2017 * Convienience function to add a list of controls.
2018 *
2019 * @dai: DAI to add controls to
2020 * @controls: array of controls to add
2021 * @num_controls: number of elements in the array
2022 *
2023 * Return 0 for success, else error.
2024 */
2025int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2026 const struct snd_kcontrol_new *controls, int num_controls)
2027{
313665b9 2028 struct snd_card *card = dai->component->card->snd_card;
022658be
LG		 2029
2030 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2031 NULL, dai);
2032}
2033EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2034
8c6529db
LG		 2035/**
2036 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2037 * @dai: DAI
2038 * @clk_id: DAI specific clock ID
2039 * @freq: new clock frequency in Hz
2040 * @dir: new clock direction - input/output.
2041 *
2042 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2043 */
2044int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2045 unsigned int freq, int dir)
2046{
f0fba2ad
LG		 2047 if (dai->driver && dai->driver->ops->set_sysclk)
2048 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
ec4ee52a 2049 else if (dai->codec && dai->codec->driver->set_sysclk)
da1c6ea6 2050 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
ec4ee52a 2051 freq, dir);
8c6529db 2052 else
1104a9c8 2053 return -ENOTSUPP;
8c6529db
LG		 2054}
2055EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2056
ec4ee52a
MB		 2057/**
2058 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2059 * @codec: CODEC
2060 * @clk_id: DAI specific clock ID
da1c6ea6 2061 * @source: Source for the clock
ec4ee52a
MB		 2062 * @freq: new clock frequency in Hz
2063 * @dir: new clock direction - input/output.
2064 *
2065 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2066 */
2067int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
da1c6ea6 2068 int source, unsigned int freq, int dir)
ec4ee52a
MB		 2069{
2070 if (codec->driver->set_sysclk)
da1c6ea6
MB		 2071 return codec->driver->set_sysclk(codec, clk_id, source,
2072 freq, dir);
ec4ee52a 2073 else
1104a9c8 2074 return -ENOTSUPP;
ec4ee52a
MB		 2075}
2076EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2077
8c6529db
LG		 2078/**
2079 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2080 * @dai: DAI
ac11a2b3 2081 * @div_id: DAI specific clock divider ID
8c6529db
LG		 2082 * @div: new clock divisor.
2083 *
2084 * Configures the clock dividers. This is used to derive the best DAI bit and
2085 * frame clocks from the system or master clock. It's best to set the DAI bit
2086 * and frame clocks as low as possible to save system power.
2087 */
2088int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2089 int div_id, int div)
2090{
f0fba2ad
LG		 2091 if (dai->driver && dai->driver->ops->set_clkdiv)
2092 return dai->driver->ops->set_clkdiv(dai, div_id, div);
8c6529db
LG		 2093 else
2094 return -EINVAL;
2095}
2096EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2097
2098/**
2099 * snd_soc_dai_set_pll - configure DAI PLL.
2100 * @dai: DAI
2101 * @pll_id: DAI specific PLL ID
85488037 2102 * @source: DAI specific source for the PLL
8c6529db
LG		 2103 * @freq_in: PLL input clock frequency in Hz
2104 * @freq_out: requested PLL output clock frequency in Hz
2105 *
2106 * Configures and enables PLL to generate output clock based on input clock.
2107 */
85488037
MB		 2108int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2109 unsigned int freq_in, unsigned int freq_out)
8c6529db 2110{
f0fba2ad
LG		 2111 if (dai->driver && dai->driver->ops->set_pll)
2112 return dai->driver->ops->set_pll(dai, pll_id, source,
85488037 2113 freq_in, freq_out);
ec4ee52a
MB		 2114 else if (dai->codec && dai->codec->driver->set_pll)
2115 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2116 freq_in, freq_out);
8c6529db
LG		 2117 else
2118 return -EINVAL;
2119}
2120EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2121
ec4ee52a
MB		 2122/*
2123 * snd_soc_codec_set_pll - configure codec PLL.
2124 * @codec: CODEC
2125 * @pll_id: DAI specific PLL ID
2126 * @source: DAI specific source for the PLL
2127 * @freq_in: PLL input clock frequency in Hz
2128 * @freq_out: requested PLL output clock frequency in Hz
2129 *
2130 * Configures and enables PLL to generate output clock based on input clock.
2131 */
2132int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2133 unsigned int freq_in, unsigned int freq_out)
2134{
2135 if (codec->driver->set_pll)
2136 return codec->driver->set_pll(codec, pll_id, source,
2137 freq_in, freq_out);
2138 else
2139 return -EINVAL;
2140}
2141EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2142
e54cf76b
LG		 2143/**
2144 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2145 * @dai: DAI
2146 * @ratio Ratio of BCLK to Sample rate.
2147 *
2148 * Configures the DAI for a preset BCLK to sample rate ratio.
2149 */
2150int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2151{
2152 if (dai->driver && dai->driver->ops->set_bclk_ratio)
2153 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2154 else
2155 return -EINVAL;
2156}
2157EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2158
8c6529db
LG		 2159/**
2160 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2161 * @dai: DAI
8c6529db
LG		 2162 * @fmt: SND_SOC_DAIFMT_ format value.
2163 *
2164 * Configures the DAI hardware format and clocking.
2165 */
2166int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2167{
5e4ba569 2168 if (dai->driver == NULL)
8c6529db 2169 return -EINVAL;
5e4ba569
SG		 2170 if (dai->driver->ops->set_fmt == NULL)
2171 return -ENOTSUPP;
2172 return dai->driver->ops->set_fmt(dai, fmt);
8c6529db
LG		 2173}
2174EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2175
89c67857 2176/**
e5c21514 2177 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
89c67857
XL		 2178 * @slots: Number of slots in use.
2179 * @tx_mask: bitmask representing active TX slots.
2180 * @rx_mask: bitmask representing active RX slots.
2181 *
2182 * Generates the TDM tx and rx slot default masks for DAI.
2183 */
e5c21514 2184static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
89c67857
XL		 2185 unsigned int *tx_mask,
2186 unsigned int *rx_mask)
2187{
2188 if (*tx_mask || *rx_mask)
2189 return 0;
2190
2191 if (!slots)
2192 return -EINVAL;
2193
2194 *tx_mask = (1 << slots) - 1;
2195 *rx_mask = (1 << slots) - 1;
2196
2197 return 0;
2198}
2199
8c6529db 2200/**
e46c9366
LPC		 2201 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2202 * @dai: The DAI to configure
a5479e38
DR		 2203 * @tx_mask: bitmask representing active TX slots.
2204 * @rx_mask: bitmask representing active RX slots.
8c6529db 2205 * @slots: Number of slots in use.
a5479e38 2206 * @slot_width: Width in bits for each slot.
8c6529db 2207 *
e46c9366
LPC		 2208 * This function configures the specified DAI for TDM operation. @slot contains
2209 * the total number of slots of the TDM stream and @slot_with the width of each
2210 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2211 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2212 * DAI should write to or read from. If a bit is set the corresponding slot is
2213 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2214 * the first slot, bit 1 to the second slot and so on. The first active slot
2215 * maps to the first channel of the DAI, the second active slot to the second
2216 * channel and so on.
2217 *
2218 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2219 * @rx_mask and @slot_width will be ignored.
2220 *
2221 * Returns 0 on success, a negative error code otherwise.
8c6529db
LG		 2222 */
2223int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
a5479e38 2224 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
8c6529db 2225{
e5c21514
XL		 2226 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
2227 dai->driver->ops->xlate_tdm_slot_mask(slots,
89c67857
XL		 2228 &tx_mask, &rx_mask);
2229 else
e5c21514 2230 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
89c67857 2231
88bd870f
BC		 2232 dai->tx_mask = tx_mask;
2233 dai->rx_mask = rx_mask;
2234
f0fba2ad
LG		 2235 if (dai->driver && dai->driver->ops->set_tdm_slot)
2236 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
a5479e38 2237 slots, slot_width);
8c6529db 2238 else
b2cbb6e1 2239 return -ENOTSUPP;
8c6529db
LG		 2240}
2241EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2242
472df3cb
BS		 2243/**
2244 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2245 * @dai: DAI
2246 * @tx_num: how many TX channels
2247 * @tx_slot: pointer to an array which imply the TX slot number channel
2248 * 0~num-1 uses
2249 * @rx_num: how many RX channels
2250 * @rx_slot: pointer to an array which imply the RX slot number channel
2251 * 0~num-1 uses
2252 *
2253 * configure the relationship between channel number and TDM slot number.
2254 */
2255int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2256 unsigned int tx_num, unsigned int *tx_slot,
2257 unsigned int rx_num, unsigned int *rx_slot)
2258{
f0fba2ad
LG		 2259 if (dai->driver && dai->driver->ops->set_channel_map)
2260 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
472df3cb
BS		 2261 rx_num, rx_slot);
2262 else
2263 return -EINVAL;
2264}
2265EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2266
8c6529db
LG		 2267/**
2268 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2269 * @dai: DAI
2270 * @tristate: tristate enable
2271 *
2272 * Tristates the DAI so that others can use it.
2273 */
2274int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2275{
f0fba2ad
LG		 2276 if (dai->driver && dai->driver->ops->set_tristate)
2277 return dai->driver->ops->set_tristate(dai, tristate);
8c6529db
LG		 2278 else
2279 return -EINVAL;
2280}
2281EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2282
2283/**
2284 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2285 * @dai: DAI
2286 * @mute: mute enable
da18396f 2287 * @direction: stream to mute
8c6529db
LG		 2288 *
2289 * Mutes the DAI DAC.
2290 */
da18396f
MB		 2291int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2292 int direction)
8c6529db 2293{
da18396f
MB		 2294 if (!dai->driver)
2295 return -ENOTSUPP;
2296
2297 if (dai->driver->ops->mute_stream)
2298 return dai->driver->ops->mute_stream(dai, mute, direction);
2299 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2300 dai->driver->ops->digital_mute)
f0fba2ad 2301 return dai->driver->ops->digital_mute(dai, mute);
8c6529db 2302 else
04570c62 2303 return -ENOTSUPP;
8c6529db
LG		 2304}
2305EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2306
88bd870f
BC		 2307static int snd_soc_init_multicodec(struct snd_soc_card *card,
2308 struct snd_soc_dai_link *dai_link)
2309{
2310 /* Legacy codec/codec_dai link is a single entry in multicodec */
2311 if (dai_link->codec_name || dai_link->codec_of_node ||
2312 dai_link->codec_dai_name) {
2313 dai_link->num_codecs = 1;
2314
2315 dai_link->codecs = devm_kzalloc(card->dev,
2316 sizeof(struct snd_soc_dai_link_component),
2317 GFP_KERNEL);
2318 if (!dai_link->codecs)
2319 return -ENOMEM;
2320
2321 dai_link->codecs[0].name = dai_link->codec_name;
2322 dai_link->codecs[0].of_node = dai_link->codec_of_node;
2323 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
2324 }
2325
2326 if (!dai_link->codecs) {
2327 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
2328 return -EINVAL;
2329 }
2330
2331 return 0;
2332}
2333
c5af3a2e
MB		 2334/**
2335 * snd_soc_register_card - Register a card with the ASoC core
2336 *
ac11a2b3 2337 * @card: Card to register
c5af3a2e 2338 *
c5af3a2e 2339 */
70a7ca34 2340int snd_soc_register_card(struct snd_soc_card *card)
c5af3a2e 2341{
88bd870f 2342 int i, j, ret;
f0fba2ad 2343
c5af3a2e
MB		 2344 if (!card->name || !card->dev)
2345 return -EINVAL;
2346
5a504963
SW		 2347 for (i = 0; i < card->num_links; i++) {
2348 struct snd_soc_dai_link *link = &card->dai_link[i];
2349
88bd870f
BC		 2350 ret = snd_soc_init_multicodec(card, link);
2351 if (ret) {
2352 dev_err(card->dev, "ASoC: failed to init multicodec\n");
2353 return ret;
5a504963 2354 }
88bd870f
BC		 2355
2356 for (j = 0; j < link->num_codecs; j++) {
2357 /*
2358 * Codec must be specified by 1 of name or OF node,
2359 * not both or neither.
2360 */
2361 if (!!link->codecs[j].name ==
2362 !!link->codecs[j].of_node) {
2363 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
2364 link->name);
2365 return -EINVAL;
2366 }
2367 /* Codec DAI name must be specified */
2368 if (!link->codecs[j].dai_name) {
2369 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
2370 link->name);
2371 return -EINVAL;
2372 }
bc92657a 2373 }
5a504963
SW		 2374
2375 /*
2376 * Platform may be specified by either name or OF node, but
2377 * can be left unspecified, and a dummy platform will be used.
2378 */
2379 if (link->platform_name && link->platform_of_node) {
10e8aa9a
MM		 2380 dev_err(card->dev,
2381 "ASoC: Both platform name/of_node are set for %s\n",
2382 link->name);
5a504963
SW		 2383 return -EINVAL;
2384 }
2385
2386 /*
bc92657a
SW		 2387 * CPU device may be specified by either name or OF node, but
2388 * can be left unspecified, and will be matched based on DAI
2389 * name alone..
2390 */
2391 if (link->cpu_name && link->cpu_of_node) {
10e8aa9a
MM		 2392 dev_err(card->dev,
2393 "ASoC: Neither/both cpu name/of_node are set for %s\n",
2394 link->name);
bc92657a
SW		 2395 return -EINVAL;
2396 }
2397 /*
2398 * At least one of CPU DAI name or CPU device name/node must be
2399 * specified
5a504963 2400 */
bc92657a
SW		 2401 if (!link->cpu_dai_name &&
2402 !(link->cpu_name || link->cpu_of_node)) {
10e8aa9a
MM		 2403 dev_err(card->dev,
2404 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
2405 link->name);
5a504963
SW		 2406 return -EINVAL;
2407 }
2408 }
2409
ed77cc12
MB		 2410 dev_set_drvdata(card->dev, card);
2411
111c6419
SW		 2412 snd_soc_initialize_card_lists(card);
2413
181a6892
MB		 2414 card->rtd = devm_kzalloc(card->dev,
2415 sizeof(struct snd_soc_pcm_runtime) *
2416 (card->num_links + card->num_aux_devs),
2417 GFP_KERNEL);
f0fba2ad
LG		 2418 if (card->rtd == NULL)
2419 return -ENOMEM;
a7dbb603 2420 card->num_rtd = 0;
2eea392d 2421 card->rtd_aux = &card->rtd[card->num_links];
f0fba2ad 2422
5f3484ac
LPC		 2423 for (i = 0; i < card->num_links; i++) {
2424 card->rtd[i].card = card;
f0fba2ad 2425 card->rtd[i].dai_link = &card->dai_link[i];
88bd870f
BC		 2426 card->rtd[i].codec_dais = devm_kzalloc(card->dev,
2427 sizeof(struct snd_soc_dai *) *
2428 (card->rtd[i].dai_link->num_codecs),
2429 GFP_KERNEL);
2430 if (card->rtd[i].codec_dais == NULL)
2431 return -ENOMEM;
5f3484ac
LPC		 2432 }
2433
2434 for (i = 0; i < card->num_aux_devs; i++)
2435 card->rtd_aux[i].card = card;
f0fba2ad 2436
db432b41 2437 INIT_LIST_HEAD(&card->dapm_dirty);
c5af3a2e 2438 card->instantiated = 0;
f0fba2ad 2439 mutex_init(&card->mutex);
a73fb2df 2440 mutex_init(&card->dapm_mutex);
c5af3a2e 2441
b19e6e7b
MB		 2442 ret = snd_soc_instantiate_card(card);
2443 if (ret != 0)
4e2576bd 2444 return ret;
c5af3a2e 2445
988e8cc4
NC		 2446 /* deactivate pins to sleep state */
2447 for (i = 0; i < card->num_rtd; i++) {
88bd870f
BC		 2448 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2449 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2450 int j;
2451
2452 for (j = 0; j < rtd->num_codecs; j++) {
2453 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
2454 if (!codec_dai->active)
2455 pinctrl_pm_select_sleep_state(codec_dai->dev);
2456 }
2457
988e8cc4
NC		 2458 if (!cpu_dai->active)
2459 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2460 }
2461
b19e6e7b 2462 return ret;
c5af3a2e 2463}
70a7ca34 2464EXPORT_SYMBOL_GPL(snd_soc_register_card);
c5af3a2e
MB		 2465
2466/**
2467 * snd_soc_unregister_card - Unregister a card with the ASoC core
2468 *
ac11a2b3 2469 * @card: Card to unregister
c5af3a2e 2470 *
c5af3a2e 2471 */
70a7ca34 2472int snd_soc_unregister_card(struct snd_soc_card *card)
c5af3a2e 2473{
01e0df66
LPC		 2474 if (card->instantiated) {
2475 card->instantiated = false;
1c325f77 2476 snd_soc_dapm_shutdown(card);
b0e26485 2477 soc_cleanup_card_resources(card);
8f6f9b29 2478 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
01e0df66 2479 }
c5af3a2e
MB		 2480
2481 return 0;
2482}
70a7ca34 2483EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
c5af3a2e 2484
f0fba2ad
LG		 2485/*
2486 * Simplify DAI link configuration by removing ".-1" from device names
2487 * and sanitizing names.
2488 */
0b9a214a 2489static char *fmt_single_name(struct device *dev, int *id)
f0fba2ad
LG		 2490{
2491 char *found, name[NAME_SIZE];
2492 int id1, id2;
2493
2494 if (dev_name(dev) == NULL)
2495 return NULL;
2496
58818a77 2497 strlcpy(name, dev_name(dev), NAME_SIZE);
f0fba2ad
LG		 2498
2499 /* are we a "%s.%d" name (platform and SPI components) */
2500 found = strstr(name, dev->driver->name);
2501 if (found) {
2502 /* get ID */
2503 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2504
2505 /* discard ID from name if ID == -1 */
2506 if (*id == -1)
2507 found[strlen(dev->driver->name)] = '\0';
2508 }
2509
2510 } else {
2511 /* I2C component devices are named "bus-addr" */
2512 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2513 char tmp[NAME_SIZE];
2514
2515 /* create unique ID number from I2C addr and bus */
05899446 2516 *id = ((id1 & 0xffff) << 16) + id2;
f0fba2ad
LG		 2517
2518 /* sanitize component name for DAI link creation */
2519 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
58818a77 2520 strlcpy(name, tmp, NAME_SIZE);
f0fba2ad
LG		 2521 } else
2522 *id = 0;
2523 }
2524
2525 return kstrdup(name, GFP_KERNEL);
2526}
2527
2528/*
2529 * Simplify DAI link naming for single devices with multiple DAIs by removing
2530 * any ".-1" and using the DAI name (instead of device name).
2531 */
2532static inline char *fmt_multiple_name(struct device *dev,
2533 struct snd_soc_dai_driver *dai_drv)
2534{
2535 if (dai_drv->name == NULL) {
10e8aa9a
MM		 2536 dev_err(dev,
2537 "ASoC: error - multiple DAI %s registered with no name\n",
2538 dev_name(dev));
f0fba2ad
LG		 2539 return NULL;
2540 }
2541
2542 return kstrdup(dai_drv->name, GFP_KERNEL);
2543}
2544
9115171a 2545/**
32c9ba54 2546 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
9115171a 2547 *
32c9ba54 2548 * @component: The component for which the DAIs should be unregistered
9115171a 2549 */
32c9ba54 2550static void snd_soc_unregister_dais(struct snd_soc_component *component)
9115171a 2551{
5c1d5f09 2552 struct snd_soc_dai *dai, *_dai;
9115171a 2553
5c1d5f09 2554 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
32c9ba54
LPC		 2555 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2556 dai->name);
5c1d5f09 2557 list_del(&dai->list);
32c9ba54 2558 kfree(dai->name);
f0fba2ad 2559 kfree(dai);
f0fba2ad 2560 }
9115171a 2561}
9115171a
MB		 2562
2563/**
32c9ba54 2564 * snd_soc_register_dais - Register a DAI with the ASoC core
9115171a 2565 *
6106d129
LPC		 2566 * @component: The component the DAIs are registered for
2567 * @dai_drv: DAI driver to use for the DAIs
ac11a2b3 2568 * @count: Number of DAIs
32c9ba54
LPC		 2569 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2570 * parent's name.
9115171a 2571 */
6106d129 2572static int snd_soc_register_dais(struct snd_soc_component *component,
bb13109d
LPC		 2573 struct snd_soc_dai_driver *dai_drv, size_t count,
2574 bool legacy_dai_naming)
9115171a 2575{
6106d129 2576 struct device *dev = component->dev;
f0fba2ad 2577 struct snd_soc_dai *dai;
32c9ba54
LPC		 2578 unsigned int i;
2579 int ret;
f0fba2ad 2580
f110bfc7 2581 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
9115171a 2582
bb13109d
LPC		 2583 component->dai_drv = dai_drv;
2584 component->num_dai = count;
2585
9115171a 2586 for (i = 0; i < count; i++) {
f0fba2ad
LG		 2587
2588 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
c46e0079
AL		 2589 if (dai == NULL) {
2590 ret = -ENOMEM;
2591 goto err;
2592 }
f0fba2ad 2593
32c9ba54
LPC		 2594 /*
2595 * Back in the old days when we still had component-less DAIs,
2596 * instead of having a static name, component-less DAIs would
2597 * inherit the name of the parent device so it is possible to
2598 * register multiple instances of the DAI. We still need to keep
2599 * the same naming style even though those DAIs are not
2600 * component-less anymore.
2601 */
2602 if (count == 1 && legacy_dai_naming) {
2603 dai->name = fmt_single_name(dev, &dai->id);
2604 } else {
2605 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
2606 if (dai_drv[i].id)
2607 dai->id = dai_drv[i].id;
2608 else
2609 dai->id = i;
2610 }
f0fba2ad
LG		 2611 if (dai->name == NULL) {
2612 kfree(dai);
32c9ba54 2613 ret = -ENOMEM;
9115171a 2614 goto err;
f0fba2ad
LG		 2615 }
2616
6106d129 2617 dai->component = component;
f0fba2ad 2618 dai->dev = dev;
f0fba2ad
LG		 2619 dai->driver = &dai_drv[i];
2620 if (!dai->driver->ops)
2621 dai->driver->ops = &null_dai_ops;
2622
1438c2f6 2623 list_add(&dai->list, &component->dai_list);
054880fe 2624
32c9ba54 2625 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
9115171a
MB		 2626 }
2627
2628 return 0;
2629
2630err:
32c9ba54 2631 snd_soc_unregister_dais(component);
9115171a
MB		 2632
2633 return ret;
2634}
9115171a 2635
14e8bdeb
LPC		 2636static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
2637 enum snd_soc_dapm_type type, int subseq)
d191bd8d 2638{
14e8bdeb 2639 struct snd_soc_component *component = dapm->component;
d191bd8d 2640
14e8bdeb
LPC		 2641 component->driver->seq_notifier(component, type, subseq);
2642}
d191bd8d 2643
14e8bdeb
LPC		 2644static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
2645 int event)
2646{
2647 struct snd_soc_component *component = dapm->component;
d191bd8d 2648
14e8bdeb
LPC		 2649 return component->driver->stream_event(component, event);
2650}
e2c330b9 2651
bb13109d
LPC		 2652static int snd_soc_component_initialize(struct snd_soc_component *component,
2653 const struct snd_soc_component_driver *driver, struct device *dev)
d191bd8d 2654{
ce0fc93a
LPC		 2655 struct snd_soc_dapm_context *dapm;
2656
bb13109d
LPC		 2657 component->name = fmt_single_name(dev, &component->id);
2658 if (!component->name) {
2659 dev_err(dev, "ASoC: Failed to allocate name\n");
d191bd8d
KM		 2660 return -ENOMEM;
2661 }
2662
bb13109d
LPC		 2663 component->dev = dev;
2664 component->driver = driver;
61aca564
LPC		 2665 component->probe = component->driver->probe;
2666 component->remove = component->driver->remove;
d191bd8d 2667
ce0fc93a
LPC		 2668 if (!component->dapm_ptr)
2669 component->dapm_ptr = &component->dapm;
2670
2671 dapm = component->dapm_ptr;
2672 dapm->dev = dev;
2673 dapm->component = component;
2674 dapm->bias_level = SND_SOC_BIAS_OFF;
5819c2fa 2675 dapm->idle_bias_off = true;
14e8bdeb
LPC		 2676 if (driver->seq_notifier)
2677 dapm->seq_notifier = snd_soc_component_seq_notifier;
2678 if (driver->stream_event)
2679 dapm->stream_event = snd_soc_component_stream_event;
d191bd8d 2680
61aca564
LPC		 2681 component->controls = driver->controls;
2682 component->num_controls = driver->num_controls;
2683 component->dapm_widgets = driver->dapm_widgets;
2684 component->num_dapm_widgets = driver->num_dapm_widgets;
2685 component->dapm_routes = driver->dapm_routes;
2686 component->num_dapm_routes = driver->num_dapm_routes;
2687
bb13109d
LPC		 2688 INIT_LIST_HEAD(&component->dai_list);
2689 mutex_init(&component->io_mutex);
d191bd8d 2690
bb13109d
LPC		 2691 return 0;
2692}
d191bd8d 2693
20feb881 2694static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
886f5692 2695{
20feb881
LPC		 2696 int val_bytes = regmap_get_val_bytes(component->regmap);
2697
2698 /* Errors are legitimate for non-integer byte multiples */
2699 if (val_bytes > 0)
2700 component->val_bytes = val_bytes;
2701}
2702
e874bf5f
LPC		 2703#ifdef CONFIG_REGMAP
2704
20feb881
LPC		 2705/**
2706 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2707 * @component: The component for which to initialize the regmap instance
2708 * @regmap: The regmap instance that should be used by the component
2709 *
2710 * This function allows deferred assignment of the regmap instance that is
2711 * associated with the component. Only use this if the regmap instance is not
2712 * yet ready when the component is registered. The function must also be called
2713 * before the first IO attempt of the component.
2714 */
2715void snd_soc_component_init_regmap(struct snd_soc_component *component,
2716 struct regmap *regmap)
2717{
2718 component->regmap = regmap;
2719 snd_soc_component_setup_regmap(component);
886f5692 2720}
20feb881
LPC		 2721EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
2722
2723/**
2724 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2725 * @component: The component for which to de-initialize the regmap instance
2726 *
2727 * Calls regmap_exit() on the regmap instance associated to the component and
2728 * removes the regmap instance from the component.
2729 *
2730 * This function should only be used if snd_soc_component_init_regmap() was used
2731 * to initialize the regmap instance.
2732 */
2733void snd_soc_component_exit_regmap(struct snd_soc_component *component)
2734{
2735 regmap_exit(component->regmap);
2736 component->regmap = NULL;
2737}
2738EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
886f5692 2739
e874bf5f 2740#endif
886f5692 2741
bb13109d
LPC		 2742static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
2743{
20feb881
LPC		 2744 if (!component->write && !component->read) {
2745 if (!component->regmap)
2746 component->regmap = dev_get_regmap(component->dev, NULL);
2747 if (component->regmap)
2748 snd_soc_component_setup_regmap(component);
2749 }
886f5692 2750
bb13109d
LPC		 2751 list_add(&component->list, &component_list);
2752}
d191bd8d 2753
bb13109d
LPC		 2754static void snd_soc_component_add(struct snd_soc_component *component)
2755{
d191bd8d 2756 mutex_lock(&client_mutex);
bb13109d 2757 snd_soc_component_add_unlocked(component);
d191bd8d 2758 mutex_unlock(&client_mutex);
bb13109d 2759}
d191bd8d 2760
bb13109d
LPC		 2761static void snd_soc_component_cleanup(struct snd_soc_component *component)
2762{
2763 snd_soc_unregister_dais(component);
2764 kfree(component->name);
2765}
d191bd8d 2766
bb13109d
LPC		 2767static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
2768{
2769 list_del(&component->list);
2770}
d191bd8d 2771
d191bd8d
KM		 2772int snd_soc_register_component(struct device *dev,
2773 const struct snd_soc_component_driver *cmpnt_drv,
2774 struct snd_soc_dai_driver *dai_drv,
2775 int num_dai)
2776{
2777 struct snd_soc_component *cmpnt;
bb13109d 2778 int ret;
d191bd8d 2779
bb13109d 2780 cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
d191bd8d
KM		 2781 if (!cmpnt) {
2782 dev_err(dev, "ASoC: Failed to allocate memory\n");
2783 return -ENOMEM;
2784 }
2785
bb13109d
LPC		 2786 ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
2787 if (ret)
2788 goto err_free;
2789
3d59400f 2790 cmpnt->ignore_pmdown_time = true;
98e639fb 2791 cmpnt->registered_as_component = true;
3d59400f 2792
bb13109d
LPC		 2793 ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
2794 if (ret < 0) {
f42cf8d6 2795 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
bb13109d
LPC		 2796 goto err_cleanup;
2797 }
d191bd8d 2798
bb13109d 2799 snd_soc_component_add(cmpnt);
4da53393 2800
bb13109d 2801 return 0;
4da53393 2802
bb13109d
LPC		 2803err_cleanup:
2804 snd_soc_component_cleanup(cmpnt);
2805err_free:
2806 kfree(cmpnt);
2807 return ret;
4da53393 2808}
bb13109d 2809EXPORT_SYMBOL_GPL(snd_soc_register_component);
4da53393 2810
d191bd8d
KM		 2811/**
2812 * snd_soc_unregister_component - Unregister a component from the ASoC core
2813 *
2814 */
2815void snd_soc_unregister_component(struct device *dev)
2816{
2817 struct snd_soc_component *cmpnt;
2818
34e81ab4 2819 mutex_lock(&client_mutex);
d191bd8d 2820 list_for_each_entry(cmpnt, &component_list, list) {
98e639fb 2821 if (dev == cmpnt->dev && cmpnt->registered_as_component)
d191bd8d
KM		 2822 goto found;
2823 }
34e81ab4 2824 mutex_unlock(&client_mutex);
d191bd8d
KM		 2825 return;
2826
2827found:
34e81ab4
LPC		 2828 snd_soc_component_del_unlocked(cmpnt);
2829 mutex_unlock(&client_mutex);
bb13109d
LPC		 2830 snd_soc_component_cleanup(cmpnt);
2831 kfree(cmpnt);
d191bd8d
KM		 2832}
2833EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
d191bd8d 2834
f1d45cc3 2835static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
e2c330b9
LPC		 2836{
2837 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
d191bd8d 2838
f1d45cc3 2839 return platform->driver->probe(platform);
e2c330b9
LPC		 2840}
2841
f1d45cc3 2842static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
e2c330b9
LPC		 2843{
2844 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
2845
f1d45cc3 2846 platform->driver->remove(platform);
d191bd8d 2847}
d191bd8d 2848
12a48a8c 2849/**
71a45cda
LPC		 2850 * snd_soc_add_platform - Add a platform to the ASoC core
2851 * @dev: The parent device for the platform
2852 * @platform: The platform to add
2853 * @platform_driver: The driver for the platform
12a48a8c 2854 */
71a45cda 2855int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
d79e57db 2856 const struct snd_soc_platform_driver *platform_drv)
12a48a8c 2857{
b37f1d12
LPC		 2858 int ret;
2859
bb13109d
LPC		 2860 ret = snd_soc_component_initialize(&platform->component,
2861 &platform_drv->component_driver, dev);
2862 if (ret)
2863 return ret;
12a48a8c 2864
f0fba2ad
LG		 2865 platform->dev = dev;
2866 platform->driver = platform_drv;
f1d45cc3
LPC		 2867
2868 if (platform_drv->probe)
2869 platform->component.probe = snd_soc_platform_drv_probe;
2870 if (platform_drv->remove)
2871 platform->component.remove = snd_soc_platform_drv_remove;
12a48a8c 2872
81c7cfd1
LPC		 2873#ifdef CONFIG_DEBUG_FS
2874 platform->component.debugfs_prefix = "platform";
2875#endif
12a48a8c
MB		 2876
2877 mutex_lock(&client_mutex);
bb13109d 2878 snd_soc_component_add_unlocked(&platform->component);
12a48a8c
MB		 2879 list_add(&platform->list, &platform_list);
2880 mutex_unlock(&client_mutex);
2881
f4333203
LPC		 2882 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
2883 platform->component.name);
12a48a8c
MB		 2884
2885 return 0;
2886}
71a45cda 2887EXPORT_SYMBOL_GPL(snd_soc_add_platform);
12a48a8c
MB		 2888
2889/**
71a45cda 2890 * snd_soc_register_platform - Register a platform with the ASoC core
12a48a8c 2891 *
71a45cda 2892 * @platform: platform to register
12a48a8c 2893 */
71a45cda
LPC		 2894int snd_soc_register_platform(struct device *dev,
2895 const struct snd_soc_platform_driver *platform_drv)
12a48a8c 2896{
f0fba2ad 2897 struct snd_soc_platform *platform;
71a45cda 2898 int ret;
f0fba2ad 2899
71a45cda 2900 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
f0fba2ad 2901
71a45cda
LPC		 2902 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
2903 if (platform == NULL)
2904 return -ENOMEM;
2905
2906 ret = snd_soc_add_platform(dev, platform, platform_drv);
2907 if (ret)
2908 kfree(platform);
2909
2910 return ret;
2911}
2912EXPORT_SYMBOL_GPL(snd_soc_register_platform);
2913
2914/**
2915 * snd_soc_remove_platform - Remove a platform from the ASoC core
2916 * @platform: the platform to remove
2917 */
2918void snd_soc_remove_platform(struct snd_soc_platform *platform)
2919{
b37f1d12 2920
12a48a8c
MB		 2921 mutex_lock(&client_mutex);
2922 list_del(&platform->list);
bb13109d 2923 snd_soc_component_del_unlocked(&platform->component);
12a48a8c
MB		 2924 mutex_unlock(&client_mutex);
2925
71a45cda 2926 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
f4333203 2927 platform->component.name);
decc27b0
DM		 2928
2929 snd_soc_component_cleanup(&platform->component);
71a45cda
LPC		 2930}
2931EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
2932
2933struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
2934{
2935 struct snd_soc_platform *platform;
2936
34e81ab4 2937 mutex_lock(&client_mutex);
71a45cda 2938 list_for_each_entry(platform, &platform_list, list) {
34e81ab4
LPC		 2939 if (dev == platform->dev) {
2940 mutex_unlock(&client_mutex);
71a45cda 2941 return platform;
34e81ab4 2942 }
71a45cda 2943 }
34e81ab4 2944 mutex_unlock(&client_mutex);
71a45cda
LPC		 2945
2946 return NULL;
2947}
2948EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
2949
2950/**
2951 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2952 *
2953 * @platform: platform to unregister
2954 */
2955void snd_soc_unregister_platform(struct device *dev)
2956{
2957 struct snd_soc_platform *platform;
2958
2959 platform = snd_soc_lookup_platform(dev);
2960 if (!platform)
2961 return;
2962
2963 snd_soc_remove_platform(platform);
f0fba2ad 2964 kfree(platform);
12a48a8c
MB		 2965}
2966EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
2967
151ab22c
MB		 2968static u64 codec_format_map[] = {
2969 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
2970 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
2971 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
2972 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
2973 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
2974 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
2975 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
2976 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
2977 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
2978 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
2979 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
2980 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
2981 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
2982 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
2983 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2984 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
2985};
2986
2987/* Fix up the DAI formats for endianness: codecs don't actually see
2988 * the endianness of the data but we're using the CPU format
2989 * definitions which do need to include endianness so we ensure that
2990 * codec DAIs always have both big and little endian variants set.
2991 */
2992static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
2993{
2994 int i;
2995
2996 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
2997 if (stream->formats & codec_format_map[i])
2998 stream->formats |= codec_format_map[i];
2999}
3000
f1d45cc3
LPC		 3001static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3002{
3003 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3004
3005 return codec->driver->probe(codec);
3006}
3007
3008static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3009{
3010 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3011
3012 codec->driver->remove(codec);
3013}
3014
e2c330b9
LPC		 3015static int snd_soc_codec_drv_write(struct snd_soc_component *component,
3016 unsigned int reg, unsigned int val)
3017{
3018 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3019
3020 return codec->driver->write(codec, reg, val);
3021}
3022
3023static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3024 unsigned int reg, unsigned int *val)
3025{
3026 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3027
3028 *val = codec->driver->read(codec, reg);
3029
3030 return 0;
3031}
3032
68f831c2
LPC		 3033static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3034 enum snd_soc_bias_level level)
3035{
3036 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3037
3038 return codec->driver->set_bias_level(codec, level);
3039}
3040
0d0cf00a
MB		 3041/**
3042 * snd_soc_register_codec - Register a codec with the ASoC core
3043 *
ac11a2b3 3044 * @codec: codec to register
0d0cf00a 3045 */
f0fba2ad 3046int snd_soc_register_codec(struct device *dev,
001ae4c0
MB		 3047 const struct snd_soc_codec_driver *codec_drv,
3048 struct snd_soc_dai_driver *dai_drv,
3049 int num_dai)
0d0cf00a 3050{
f0fba2ad 3051 struct snd_soc_codec *codec;
bb13109d 3052 struct snd_soc_dai *dai;
f0fba2ad 3053 int ret, i;
151ab22c 3054
f0fba2ad
LG		 3055 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3056
3057 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3058 if (codec == NULL)
3059 return -ENOMEM;
0d0cf00a 3060
ce0fc93a 3061 codec->component.dapm_ptr = &codec->dapm;
f1d45cc3 3062 codec->component.codec = codec;
ce0fc93a 3063
bb13109d
LPC		 3064 ret = snd_soc_component_initialize(&codec->component,
3065 &codec_drv->component_driver, dev);
3066 if (ret)
3067 goto err_free;
f0fba2ad 3068
f1d45cc3
LPC		 3069 if (codec_drv->controls) {
3070 codec->component.controls = codec_drv->controls;
3071 codec->component.num_controls = codec_drv->num_controls;
3072 }
3073 if (codec_drv->dapm_widgets) {
3074 codec->component.dapm_widgets = codec_drv->dapm_widgets;
3075 codec->component.num_dapm_widgets = codec_drv->num_dapm_widgets;
3076 }
3077 if (codec_drv->dapm_routes) {
3078 codec->component.dapm_routes = codec_drv->dapm_routes;
3079 codec->component.num_dapm_routes = codec_drv->num_dapm_routes;
3080 }
3081
3082 if (codec_drv->probe)
3083 codec->component.probe = snd_soc_codec_drv_probe;
3084 if (codec_drv->remove)
3085 codec->component.remove = snd_soc_codec_drv_remove;
e2c330b9
LPC		 3086 if (codec_drv->write)
3087 codec->component.write = snd_soc_codec_drv_write;
3088 if (codec_drv->read)
3089 codec->component.read = snd_soc_codec_drv_read;
3d59400f 3090 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
5819c2fa 3091 codec->dapm.idle_bias_off = codec_drv->idle_bias_off;
86dbf2ac 3092 codec->dapm.suspend_bias_off = codec_drv->suspend_bias_off;
14e8bdeb
LPC		 3093 if (codec_drv->seq_notifier)
3094 codec->dapm.seq_notifier = codec_drv->seq_notifier;
68f831c2
LPC		 3095 if (codec_drv->set_bias_level)
3096 codec->dapm.set_bias_level = snd_soc_codec_set_bias_level;
7a30a3db
DP		 3097 codec->dev = dev;
3098 codec->driver = codec_drv;
e2c330b9 3099 codec->component.val_bytes = codec_drv->reg_word_size;
ce6120cc 3100
81c7cfd1
LPC		 3101#ifdef CONFIG_DEBUG_FS
3102 codec->component.init_debugfs = soc_init_codec_debugfs;
3103 codec->component.debugfs_prefix = "codec";
3104#endif
3105
886f5692
LPC		 3106 if (codec_drv->get_regmap)
3107 codec->component.regmap = codec_drv->get_regmap(dev);
a39f75f7 3108
f0fba2ad
LG		 3109 for (i = 0; i < num_dai; i++) {
3110 fixup_codec_formats(&dai_drv[i].playback);
3111 fixup_codec_formats(&dai_drv[i].capture);
3112 }
3113
bb13109d 3114 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
5acd7dfb 3115 if (ret < 0) {
f42cf8d6 3116 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
bb13109d 3117 goto err_cleanup;
26b01ccd 3118 }
f0fba2ad 3119
bb13109d
LPC		 3120 list_for_each_entry(dai, &codec->component.dai_list, list)
3121 dai->codec = codec;
f0fba2ad 3122
e1328a83 3123 mutex_lock(&client_mutex);
bb13109d 3124 snd_soc_component_add_unlocked(&codec->component);
054880fe 3125 list_add(&codec->list, &codec_list);
e1328a83
KM		 3126 mutex_unlock(&client_mutex);
3127
f4333203
LPC		 3128 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3129 codec->component.name);
0d0cf00a 3130 return 0;
f0fba2ad 3131
bb13109d
LPC		 3132err_cleanup:
3133 snd_soc_component_cleanup(&codec->component);
3134err_free:
f0fba2ad
LG		 3135 kfree(codec);
3136 return ret;
0d0cf00a
MB		 3137}
3138EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3139
3140/**
3141 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3142 *
ac11a2b3 3143 * @codec: codec to unregister
0d0cf00a 3144 */
f0fba2ad 3145void snd_soc_unregister_codec(struct device *dev)
0d0cf00a 3146{
f0fba2ad 3147 struct snd_soc_codec *codec;
f0fba2ad 3148
34e81ab4 3149 mutex_lock(&client_mutex);
f0fba2ad
LG		 3150 list_for_each_entry(codec, &codec_list, list) {
3151 if (dev == codec->dev)
3152 goto found;
3153 }
34e81ab4 3154 mutex_unlock(&client_mutex);
f0fba2ad
LG		 3155 return;
3156
3157found:
0d0cf00a 3158 list_del(&codec->list);
bb13109d 3159 snd_soc_component_del_unlocked(&codec->component);
0d0cf00a
MB		 3160 mutex_unlock(&client_mutex);
3161
f4333203
LPC		 3162 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3163 codec->component.name);
f0fba2ad 3164
bb13109d 3165 snd_soc_component_cleanup(&codec->component);
7a30a3db 3166 snd_soc_cache_exit(codec);
f0fba2ad 3167 kfree(codec);
0d0cf00a
MB		 3168}
3169EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3170
bec4fa05
SW		 3171/* Retrieve a card's name from device tree */
3172int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3173 const char *propname)
3174{
7e07e7c0 3175 struct device_node *np;
bec4fa05
SW		 3176 int ret;
3177
7e07e7c0
TB		 3178 if (!card->dev) {
3179 pr_err("card->dev is not set before calling %s\n", __func__);
3180 return -EINVAL;
3181 }
3182
3183 np = card->dev->of_node;
3184
bec4fa05
SW		 3185 ret = of_property_read_string_index(np, propname, 0, &card->name);
3186 /*
3187 * EINVAL means the property does not exist. This is fine providing
3188 * card->name was previously set, which is checked later in
3189 * snd_soc_register_card.
3190 */
3191 if (ret < 0 && ret != -EINVAL) {
3192 dev_err(card->dev,
f110bfc7 3193 "ASoC: Property '%s' could not be read: %d\n",
bec4fa05
SW		 3194 propname, ret);
3195 return ret;
3196 }
3197
3198 return 0;
3199}
3200EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3201
9a6d4860
XL		 3202static const struct snd_soc_dapm_widget simple_widgets[] = {
3203 SND_SOC_DAPM_MIC("Microphone", NULL),
3204 SND_SOC_DAPM_LINE("Line", NULL),
3205 SND_SOC_DAPM_HP("Headphone", NULL),
3206 SND_SOC_DAPM_SPK("Speaker", NULL),
3207};
3208
3209int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3210 const char *propname)
3211{
3212 struct device_node *np = card->dev->of_node;
3213 struct snd_soc_dapm_widget *widgets;
3214 const char *template, *wname;
3215 int i, j, num_widgets, ret;
3216
3217 num_widgets = of_property_count_strings(np, propname);
3218 if (num_widgets < 0) {
3219 dev_err(card->dev,
3220 "ASoC: Property '%s' does not exist\n", propname);
3221 return -EINVAL;
3222 }
3223 if (num_widgets & 1) {
3224 dev_err(card->dev,
3225 "ASoC: Property '%s' length is not even\n", propname);
3226 return -EINVAL;
3227 }
3228
3229 num_widgets /= 2;
3230 if (!num_widgets) {
3231 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3232 propname);
3233 return -EINVAL;
3234 }
3235
3236 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3237 GFP_KERNEL);
3238 if (!widgets) {
3239 dev_err(card->dev,
3240 "ASoC: Could not allocate memory for widgets\n");
3241 return -ENOMEM;
3242 }
3243
3244 for (i = 0; i < num_widgets; i++) {
3245 ret = of_property_read_string_index(np, propname,
3246 2 * i, &template);
3247 if (ret) {
3248 dev_err(card->dev,
3249 "ASoC: Property '%s' index %d read error:%d\n",
3250 propname, 2 * i, ret);
3251 return -EINVAL;
3252 }
3253
3254 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3255 if (!strncmp(template, simple_widgets[j].name,
3256 strlen(simple_widgets[j].name))) {
3257 widgets[i] = simple_widgets[j];
3258 break;
3259 }
3260 }
3261
3262 if (j >= ARRAY_SIZE(simple_widgets)) {
3263 dev_err(card->dev,
3264 "ASoC: DAPM widget '%s' is not supported\n",
3265 template);
3266 return -EINVAL;
3267 }
3268
3269 ret = of_property_read_string_index(np, propname,
3270 (2 * i) + 1,
3271 &wname);
3272 if (ret) {
3273 dev_err(card->dev,
3274 "ASoC: Property '%s' index %d read error:%d\n",
3275 propname, (2 * i) + 1, ret);
3276 return -EINVAL;
3277 }
3278
3279 widgets[i].name = wname;
3280 }
3281
f23e860e
NC		 3282 card->of_dapm_widgets = widgets;
3283 card->num_of_dapm_widgets = num_widgets;
9a6d4860
XL		 3284
3285 return 0;
3286}
3287EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
3288
89c67857
XL		 3289int snd_soc_of_parse_tdm_slot(struct device_node *np,
3290 unsigned int *slots,
3291 unsigned int *slot_width)
3292{
3293 u32 val;
3294 int ret;
3295
3296 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3297 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3298 if (ret)
3299 return ret;
3300
3301 if (slots)
3302 *slots = val;
3303 }
3304
3305 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3306 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3307 if (ret)
3308 return ret;
3309
3310 if (slot_width)
3311 *slot_width = val;
3312 }
3313
3314 return 0;
3315}
3316EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3317
a4a54dd5
SW		 3318int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3319 const char *propname)
3320{
3321 struct device_node *np = card->dev->of_node;
e3b1e6a1 3322 int num_routes;
a4a54dd5
SW		 3323 struct snd_soc_dapm_route *routes;
3324 int i, ret;
3325
3326 num_routes = of_property_count_strings(np, propname);
c34ce320 3327 if (num_routes < 0 || num_routes & 1) {
10e8aa9a
MM		 3328 dev_err(card->dev,
3329 "ASoC: Property '%s' does not exist or its length is not even\n",
3330 propname);
a4a54dd5
SW		 3331 return -EINVAL;
3332 }
3333 num_routes /= 2;
3334 if (!num_routes) {
f110bfc7 3335 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
a4a54dd5
SW		 3336 propname);
3337 return -EINVAL;
3338 }
3339
e3b1e6a1 3340 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
a4a54dd5
SW		 3341 GFP_KERNEL);
3342 if (!routes) {
3343 dev_err(card->dev,
f110bfc7 3344 "ASoC: Could not allocate DAPM route table\n");
a4a54dd5
SW		 3345 return -EINVAL;
3346 }
3347
3348 for (i = 0; i < num_routes; i++) {
3349 ret = of_property_read_string_index(np, propname,
e3b1e6a1 3350 2 * i, &routes[i].sink);
a4a54dd5 3351 if (ret) {
c871bd0b
MB		 3352 dev_err(card->dev,
3353 "ASoC: Property '%s' index %d could not be read: %d\n",
3354 propname, 2 * i, ret);
a4a54dd5
SW		 3355 return -EINVAL;
3356 }
3357 ret = of_property_read_string_index(np, propname,
e3b1e6a1 3358 (2 * i) + 1, &routes[i].source);
a4a54dd5
SW		 3359 if (ret) {
3360 dev_err(card->dev,
c871bd0b
MB		 3361 "ASoC: Property '%s' index %d could not be read: %d\n",
3362 propname, (2 * i) + 1, ret);
a4a54dd5
SW		 3363 return -EINVAL;
3364 }
3365 }
3366
f23e860e
NC		 3367 card->num_of_dapm_routes = num_routes;
3368 card->of_dapm_routes = routes;
a4a54dd5
SW		 3369
3370 return 0;
3371}
3372EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3373
a7930ed4 3374unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
389cb834
JS		 3375 const char *prefix,
3376 struct device_node **bitclkmaster,
3377 struct device_node **framemaster)
a7930ed4
KM		 3378{
3379 int ret, i;
3380 char prop[128];
3381 unsigned int format = 0;
3382 int bit, frame;
3383 const char *str;
3384 struct {
3385 char *name;
3386 unsigned int val;
3387 } of_fmt_table[] = {
3388 { "i2s", SND_SOC_DAIFMT_I2S },
3389 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3390 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3391 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3392 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3393 { "ac97", SND_SOC_DAIFMT_AC97 },
3394 { "pdm", SND_SOC_DAIFMT_PDM},
3395 { "msb", SND_SOC_DAIFMT_MSB },
3396 { "lsb", SND_SOC_DAIFMT_LSB },
a7930ed4
KM		 3397 };
3398
3399 if (!prefix)
3400 prefix = "";
3401
3402 /*
3403 * check "[prefix]format = xxx"
3404 * SND_SOC_DAIFMT_FORMAT_MASK area
3405 */
3406 snprintf(prop, sizeof(prop), "%sformat", prefix);
3407 ret = of_property_read_string(np, prop, &str);
3408 if (ret == 0) {
3409 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3410 if (strcmp(str, of_fmt_table[i].name) == 0) {
3411 format |= of_fmt_table[i].val;
3412 break;
3413 }
3414 }
3415 }
3416
3417 /*
8c2d6a9f 3418 * check "[prefix]continuous-clock"
a7930ed4
KM		 3419 * SND_SOC_DAIFMT_CLOCK_MASK area
3420 */
8c2d6a9f
KM		 3421 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3422 if (of_get_property(np, prop, NULL))
3423 format |= SND_SOC_DAIFMT_CONT;
3424 else
3425 format |= SND_SOC_DAIFMT_GATED;
a7930ed4
KM		 3426
3427 /*
3428 * check "[prefix]bitclock-inversion"
3429 * check "[prefix]frame-inversion"
3430 * SND_SOC_DAIFMT_INV_MASK area
3431 */
3432 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3433 bit = !!of_get_property(np, prop, NULL);
3434
3435 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3436 frame = !!of_get_property(np, prop, NULL);
3437
3438 switch ((bit << 4) + frame) {
3439 case 0x11:
3440 format |= SND_SOC_DAIFMT_IB_IF;
3441 break;
3442 case 0x10:
3443 format |= SND_SOC_DAIFMT_IB_NF;
3444 break;
3445 case 0x01:
3446 format |= SND_SOC_DAIFMT_NB_IF;
3447 break;
3448 default:
3449 /* SND_SOC_DAIFMT_NB_NF is default */
3450 break;
3451 }
3452
3453 /*
3454 * check "[prefix]bitclock-master"
3455 * check "[prefix]frame-master"
3456 * SND_SOC_DAIFMT_MASTER_MASK area
3457 */
3458 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
3459 bit = !!of_get_property(np, prop, NULL);
389cb834
JS		 3460 if (bit && bitclkmaster)
3461 *bitclkmaster = of_parse_phandle(np, prop, 0);
a7930ed4
KM		 3462
3463 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
3464 frame = !!of_get_property(np, prop, NULL);
389cb834
JS		 3465 if (frame && framemaster)
3466 *framemaster = of_parse_phandle(np, prop, 0);
a7930ed4
KM		 3467
3468 switch ((bit << 4) + frame) {
3469 case 0x11:
3470 format |= SND_SOC_DAIFMT_CBM_CFM;
3471 break;
3472 case 0x10:
3473 format |= SND_SOC_DAIFMT_CBM_CFS;
3474 break;
3475 case 0x01:
3476 format |= SND_SOC_DAIFMT_CBS_CFM;
3477 break;
3478 default:
3479 format |= SND_SOC_DAIFMT_CBS_CFS;
3480 break;
3481 }
3482
3483 return format;
3484}
3485EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
3486
93b0f3ee
JFM		 3487static int snd_soc_get_dai_name(struct of_phandle_args *args,
3488 const char **dai_name)
cb470087
KM		 3489{
3490 struct snd_soc_component *pos;
93b0f3ee 3491 int ret = -EPROBE_DEFER;
cb470087
KM		 3492
3493 mutex_lock(&client_mutex);
3494 list_for_each_entry(pos, &component_list, list) {
93b0f3ee 3495 if (pos->dev->of_node != args->np)
cb470087
KM		 3496 continue;
3497
6833c452 3498 if (pos->driver->of_xlate_dai_name) {
93b0f3ee
JFM		 3499 ret = pos->driver->of_xlate_dai_name(pos,
3500 args,
3501 dai_name);
6833c452
KM		 3502 } else {
3503 int id = -1;
3504
93b0f3ee 3505 switch (args->args_count) {
6833c452
KM		 3506 case 0:
3507 id = 0; /* same as dai_drv[0] */
3508 break;
3509 case 1:
93b0f3ee 3510 id = args->args[0];
6833c452
KM		 3511 break;
3512 default:
3513 /* not supported */
3514 break;
3515 }
3516
3517 if (id < 0 || id >= pos->num_dai) {
3518 ret = -EINVAL;
3dcba280 3519 continue;
6833c452 3520 }
e41975ed
XL		 3521
3522 ret = 0;
3523
3524 *dai_name = pos->dai_drv[id].name;
3525 if (!*dai_name)
3526 *dai_name = pos->name;
cb470087
KM		 3527 }
3528
cb470087
KM		 3529 break;
3530 }
3531 mutex_unlock(&client_mutex);
93b0f3ee
JFM		 3532 return ret;
3533}
3534
3535int snd_soc_of_get_dai_name(struct device_node *of_node,
3536 const char **dai_name)
3537{
3538 struct of_phandle_args args;
3539 int ret;
3540
3541 ret = of_parse_phandle_with_args(of_node, "sound-dai",
3542 "#sound-dai-cells", 0, &args);
3543 if (ret)
3544 return ret;
3545
3546 ret = snd_soc_get_dai_name(&args, dai_name);
cb470087
KM		 3547
3548 of_node_put(args.np);
3549
3550 return ret;
3551}
3552EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
3553
93b0f3ee
JFM		 3554/*
3555 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3556 * @dev: Card device
3557 * @of_node: Device node
3558 * @dai_link: DAI link
3559 *
3560 * Builds an array of CODEC DAI components from the DAI link property
3561 * 'sound-dai'.
3562 * The array is set in the DAI link and the number of DAIs is set accordingly.
3563 * The device nodes in the array (of_node) must be dereferenced by the caller.
3564 *
3565 * Returns 0 for success
3566 */
3567int snd_soc_of_get_dai_link_codecs(struct device *dev,
3568 struct device_node *of_node,
3569 struct snd_soc_dai_link *dai_link)
3570{
3571 struct of_phandle_args args;
3572 struct snd_soc_dai_link_component *component;
3573 char *name;
3574 int index, num_codecs, ret;
3575
3576 /* Count the number of CODECs */
3577 name = "sound-dai";
3578 num_codecs = of_count_phandle_with_args(of_node, name,
3579 "#sound-dai-cells");
3580 if (num_codecs <= 0) {
3581 if (num_codecs == -ENOENT)
3582 dev_err(dev, "No 'sound-dai' property\n");
3583 else
3584 dev_err(dev, "Bad phandle in 'sound-dai'\n");
3585 return num_codecs;
3586 }
3587 component = devm_kzalloc(dev,
3588 sizeof *component * num_codecs,
3589 GFP_KERNEL);
3590 if (!component)
3591 return -ENOMEM;
3592 dai_link->codecs = component;
3593 dai_link->num_codecs = num_codecs;
3594
3595 /* Parse the list */
3596 for (index = 0, component = dai_link->codecs;
3597 index < dai_link->num_codecs;
3598 index++, component++) {
3599 ret = of_parse_phandle_with_args(of_node, name,
3600 "#sound-dai-cells",
3601 index, &args);
3602 if (ret)
3603 goto err;
3604 component->of_node = args.np;
3605 ret = snd_soc_get_dai_name(&args, &component->dai_name);
3606 if (ret < 0)
3607 goto err;
3608 }
3609 return 0;
3610err:
3611 for (index = 0, component = dai_link->codecs;
3612 index < dai_link->num_codecs;
3613 index++, component++) {
3614 if (!component->of_node)
3615 break;
3616 of_node_put(component->of_node);
3617 component->of_node = NULL;
3618 }
3619 dai_link->codecs = NULL;
3620 dai_link->num_codecs = 0;
3621 return ret;
3622}
3623EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
3624
c9b3a40f 3625static int __init snd_soc_init(void)
db2a4165 3626{
6553bf06 3627 snd_soc_debugfs_init();
fb257897
MB		 3628 snd_soc_util_init();
3629
db2a4165
FM		 3630 return platform_driver_register(&soc_driver);
3631}
4abe8e16 3632module_init(snd_soc_init);
db2a4165 3633
7d8c16a6 3634static void __exit snd_soc_exit(void)
db2a4165 3635{
fb257897 3636 snd_soc_util_exit();
6553bf06 3637 snd_soc_debugfs_exit();
fb257897 3638
384c89e2 3639#ifdef CONFIG_DEBUG_FS
384c89e2 3640#endif
3ff3f64b 3641 platform_driver_unregister(&soc_driver);
db2a4165 3642}
db2a4165
FM		 3643module_exit(snd_soc_exit);
3644
3645/* Module information */
d331124d 3646MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
db2a4165
FM		 3647MODULE_DESCRIPTION("ALSA SoC Core");
3648MODULE_LICENSE("GPL");
8b45a209 3649MODULE_ALIAS("platform:soc-audio");
Linux kernel - Deliverables
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