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ASoC: Manage WM8731 ACTIVE bit as a supply widget
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / soc / soc-core.c
CommitLineData
db2a4165
FM		 1/*
2 * soc-core.c -- ALSA SoC Audio Layer
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
0664d888 5 * Copyright 2005 Openedhand Ltd.
f0fba2ad
LG		 6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
0664d888 8 *
d331124d 9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
0664d888
LG		 10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
db2a4165
FM		 12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
db2a4165
FM		 18 * TODO:
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
23 */
24
25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/init.h>
28#include <linux/delay.h>
29#include <linux/pm.h>
30#include <linux/bitops.h>
12ef193d 31#include <linux/debugfs.h>
db2a4165 32#include <linux/platform_device.h>
5a0e3ad6 33#include <linux/slab.h>
474828a4 34#include <sound/ac97_codec.h>
db2a4165 35#include <sound/core.h>
3028eb8c 36#include <sound/jack.h>
db2a4165
FM		 37#include <sound/pcm.h>
38#include <sound/pcm_params.h>
39#include <sound/soc.h>
db2a4165
FM		 40#include <sound/initval.h>
41
a8b1d34f
MB		 42#define CREATE_TRACE_POINTS
43#include <trace/events/asoc.h>
44
f0fba2ad
LG		 45#define NAME_SIZE 32
46
db2a4165
FM		 47static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
48
384c89e2 49#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 50struct dentry *snd_soc_debugfs_root;
51EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
384c89e2
MB		 52#endif
53
c5af3a2e
MB		 54static DEFINE_MUTEX(client_mutex);
55static LIST_HEAD(card_list);
9115171a 56static LIST_HEAD(dai_list);
12a48a8c 57static LIST_HEAD(platform_list);
0d0cf00a 58static LIST_HEAD(codec_list);
c5af3a2e 59
ddee627c 60int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
c5af3a2e 61
db2a4165
FM		 62/*
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
66 */
67static int pmdown_time = 5000;
68module_param(pmdown_time, int, 0);
69MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
70
2bc9a81e
DP		 71/* returns the minimum number of bytes needed to represent
72 * a particular given value */
73static int min_bytes_needed(unsigned long val)
74{
75 int c = 0;
76 int i;
77
78 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
79 if (val & (1UL << i))
80 break;
81 c = (sizeof val * 8) - c;
82 if (!c || (c % 8))
83 c = (c + 8) / 8;
84 else
85 c /= 8;
86 return c;
87}
88
13fd179f
DP		 89/* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91static int format_register_str(struct snd_soc_codec *codec,
92 unsigned int reg, char *buf, size_t len)
93{
00b317a4
SW		 94 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
95 int regsize = codec->driver->reg_word_size * 2;
13fd179f
DP		 96 int ret;
97 char tmpbuf[len + 1];
98 char regbuf[regsize + 1];
99
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
102 WARN_ON(len > 63);
103
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize + regsize + 2 + 1 != len)
106 return -EINVAL;
107
108 ret = snd_soc_read(codec , reg);
109 if (ret < 0) {
110 memset(regbuf, 'X', regsize);
111 regbuf[regsize] = '\0';
112 } else {
113 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
114 }
115
116 /* prepare the buffer */
117 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf, tmpbuf, len);
120
121 return 0;
122}
123
2624d5fa 124/* codec register dump */
13fd179f
DP		 125static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
126 size_t count, loff_t pos)
2624d5fa 127{
13fd179f 128 int i, step = 1;
2bc9a81e 129 int wordsize, regsize;
13fd179f
DP		 130 int len;
131 size_t total = 0;
132 loff_t p = 0;
2bc9a81e 133
00b317a4
SW		 134 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
135 regsize = codec->driver->reg_word_size * 2;
2624d5fa 136
13fd179f
DP		 137 len = wordsize + regsize + 2 + 1;
138
f0fba2ad 139 if (!codec->driver->reg_cache_size)
2624d5fa
MB		 140 return 0;
141
f0fba2ad
LG		 142 if (codec->driver->reg_cache_step)
143 step = codec->driver->reg_cache_step;
2624d5fa 144
f0fba2ad 145 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
1500b7b5 146 if (codec->readable_register && !codec->readable_register(codec, i))
2624d5fa 147 continue;
f0fba2ad
LG		 148 if (codec->driver->display_register) {
149 count += codec->driver->display_register(codec, buf + count,
2624d5fa 150 PAGE_SIZE - count, i);
5164d74d 151 } else {
13fd179f
DP		 152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
154 if (p >= pos) {
155 if (total + len >= count - 1)
156 break;
157 format_register_str(codec, i, buf + total, len);
158 total += len;
159 }
160 p += len;
5164d74d 161 }
2624d5fa
MB		 162 }
163
13fd179f 164 total = min(total, count - 1);
2624d5fa 165
13fd179f 166 return total;
2624d5fa 167}
13fd179f 168
2624d5fa
MB		 169static ssize_t codec_reg_show(struct device *dev,
170 struct device_attribute *attr, char *buf)
171{
f0fba2ad
LG		 172 struct snd_soc_pcm_runtime *rtd =
173 container_of(dev, struct snd_soc_pcm_runtime, dev);
174
13fd179f 175 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
2624d5fa
MB		 176}
177
178static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
179
dbe21408
MB		 180static ssize_t pmdown_time_show(struct device *dev,
181 struct device_attribute *attr, char *buf)
182{
f0fba2ad
LG		 183 struct snd_soc_pcm_runtime *rtd =
184 container_of(dev, struct snd_soc_pcm_runtime, dev);
dbe21408 185
f0fba2ad 186 return sprintf(buf, "%ld\n", rtd->pmdown_time);
dbe21408
MB		 187}
188
189static ssize_t pmdown_time_set(struct device *dev,
190 struct device_attribute *attr,
191 const char *buf, size_t count)
192{
f0fba2ad
LG		 193 struct snd_soc_pcm_runtime *rtd =
194 container_of(dev, struct snd_soc_pcm_runtime, dev);
c593b520 195 int ret;
dbe21408 196
c593b520
MB		 197 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
198 if (ret)
199 return ret;
dbe21408
MB		 200
201 return count;
202}
203
204static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
205
2624d5fa
MB		 206#ifdef CONFIG_DEBUG_FS
207static int codec_reg_open_file(struct inode *inode, struct file *file)
208{
209 file->private_data = inode->i_private;
210 return 0;
211}
212
213static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
13fd179f 214 size_t count, loff_t *ppos)
2624d5fa
MB		 215{
216 ssize_t ret;
217 struct snd_soc_codec *codec = file->private_data;
13fd179f
DP		 218 char *buf;
219
220 if (*ppos < 0 || !count)
221 return -EINVAL;
222
223 buf = kmalloc(count, GFP_KERNEL);
2624d5fa
MB		 224 if (!buf)
225 return -ENOMEM;
13fd179f
DP		 226
227 ret = soc_codec_reg_show(codec, buf, count, *ppos);
228 if (ret >= 0) {
229 if (copy_to_user(user_buf, buf, ret)) {
230 kfree(buf);
231 return -EFAULT;
232 }
233 *ppos += ret;
234 }
235
2624d5fa
MB		 236 kfree(buf);
237 return ret;
238}
239
240static ssize_t codec_reg_write_file(struct file *file,
241 const char __user *user_buf, size_t count, loff_t *ppos)
242{
243 char buf[32];
34e268d8 244 size_t buf_size;
2624d5fa
MB		 245 char *start = buf;
246 unsigned long reg, value;
247 int step = 1;
248 struct snd_soc_codec *codec = file->private_data;
249
250 buf_size = min(count, (sizeof(buf)-1));
251 if (copy_from_user(buf, user_buf, buf_size))
252 return -EFAULT;
253 buf[buf_size] = 0;
254
f0fba2ad
LG		 255 if (codec->driver->reg_cache_step)
256 step = codec->driver->reg_cache_step;
2624d5fa
MB		 257
258 while (*start == ' ')
259 start++;
260 reg = simple_strtoul(start, &start, 16);
2624d5fa
MB		 261 while (*start == ' ')
262 start++;
263 if (strict_strtoul(start, 16, &value))
264 return -EINVAL;
0d51a9cb
MB		 265
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER);
268
e4f078d8 269 snd_soc_write(codec, reg, value);
2624d5fa
MB		 270 return buf_size;
271}
272
273static const struct file_operations codec_reg_fops = {
274 .open = codec_reg_open_file,
275 .read = codec_reg_read_file,
276 .write = codec_reg_write_file,
6038f373 277 .llseek = default_llseek,
2624d5fa
MB		 278};
279
280static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
281{
d6ce4cf3
JN		 282 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
283
284 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
285 debugfs_card_root);
2624d5fa
MB		 286 if (!codec->debugfs_codec_root) {
287 printk(KERN_WARNING
288 "ASoC: Failed to create codec debugfs directory\n");
289 return;
290 }
291
aaee8ef1
MB		 292 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
293 &codec->cache_sync);
294 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
295 &codec->cache_only);
296
2624d5fa
MB		 297 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
298 codec->debugfs_codec_root,
299 codec, &codec_reg_fops);
300 if (!codec->debugfs_reg)
301 printk(KERN_WARNING
302 "ASoC: Failed to create codec register debugfs file\n");
303
8eecaf62 304 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
2624d5fa
MB		 305}
306
307static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
308{
309 debugfs_remove_recursive(codec->debugfs_codec_root);
310}
311
c3c5a19a
MB		 312static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
313 size_t count, loff_t *ppos)
314{
315 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 316 ssize_t len, ret = 0;
c3c5a19a
MB		 317 struct snd_soc_codec *codec;
318
319 if (!buf)
320 return -ENOMEM;
321
2b194f9d
MB		 322 list_for_each_entry(codec, &codec_list, list) {
323 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
324 codec->name);
325 if (len >= 0)
326 ret += len;
327 if (ret > PAGE_SIZE) {
328 ret = PAGE_SIZE;
329 break;
330 }
331 }
c3c5a19a
MB		 332
333 if (ret >= 0)
334 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
335
336 kfree(buf);
337
338 return ret;
339}
340
341static const struct file_operations codec_list_fops = {
342 .read = codec_list_read_file,
343 .llseek = default_llseek,/* read accesses f_pos */
344};
345
f3208780
MB		 346static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
347 size_t count, loff_t *ppos)
348{
349 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 350 ssize_t len, ret = 0;
f3208780
MB		 351 struct snd_soc_dai *dai;
352
353 if (!buf)
354 return -ENOMEM;
355
2b194f9d
MB		 356 list_for_each_entry(dai, &dai_list, list) {
357 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
358 if (len >= 0)
359 ret += len;
360 if (ret > PAGE_SIZE) {
361 ret = PAGE_SIZE;
362 break;
363 }
364 }
f3208780 365
2b194f9d 366 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
f3208780
MB		 367
368 kfree(buf);
369
370 return ret;
371}
372
373static const struct file_operations dai_list_fops = {
374 .read = dai_list_read_file,
375 .llseek = default_llseek,/* read accesses f_pos */
376};
377
19c7ac27
MB		 378static ssize_t platform_list_read_file(struct file *file,
379 char __user *user_buf,
380 size_t count, loff_t *ppos)
381{
382 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2b194f9d 383 ssize_t len, ret = 0;
19c7ac27
MB		 384 struct snd_soc_platform *platform;
385
386 if (!buf)
387 return -ENOMEM;
388
2b194f9d
MB		 389 list_for_each_entry(platform, &platform_list, list) {
390 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
391 platform->name);
392 if (len >= 0)
393 ret += len;
394 if (ret > PAGE_SIZE) {
395 ret = PAGE_SIZE;
396 break;
397 }
398 }
19c7ac27 399
2b194f9d 400 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
19c7ac27
MB		 401
402 kfree(buf);
403
404 return ret;
405}
406
407static const struct file_operations platform_list_fops = {
408 .read = platform_list_read_file,
409 .llseek = default_llseek,/* read accesses f_pos */
410};
411
a6052154
JN		 412static void soc_init_card_debugfs(struct snd_soc_card *card)
413{
414 card->debugfs_card_root = debugfs_create_dir(card->name,
8a9dab1a 415 snd_soc_debugfs_root);
3a45b867 416 if (!card->debugfs_card_root) {
a6052154
JN		 417 dev_warn(card->dev,
418 "ASoC: Failed to create codec debugfs directory\n");
3a45b867
JN		 419 return;
420 }
421
422 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
423 card->debugfs_card_root,
424 &card->pop_time);
425 if (!card->debugfs_pop_time)
426 dev_warn(card->dev,
427 "Failed to create pop time debugfs file\n");
a6052154
JN		 428}
429
430static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
431{
432 debugfs_remove_recursive(card->debugfs_card_root);
433}
434
2624d5fa
MB		 435#else
436
437static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
438{
439}
440
441static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
442{
443}
b95fccbc
AL		 444
445static inline void soc_init_card_debugfs(struct snd_soc_card *card)
446{
447}
448
449static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
450{
451}
2624d5fa
MB		 452#endif
453
db2a4165
FM		 454#ifdef CONFIG_SND_SOC_AC97_BUS
455/* unregister ac97 codec */
456static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
457{
458 if (codec->ac97->dev.bus)
459 device_unregister(&codec->ac97->dev);
460 return 0;
461}
462
463/* stop no dev release warning */
464static void soc_ac97_device_release(struct device *dev){}
465
466/* register ac97 codec to bus */
467static int soc_ac97_dev_register(struct snd_soc_codec *codec)
468{
469 int err;
470
471 codec->ac97->dev.bus = &ac97_bus_type;
4ac5c61f 472 codec->ac97->dev.parent = codec->card->dev;
db2a4165
FM		 473 codec->ac97->dev.release = soc_ac97_device_release;
474
bb072bf0 475 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
f0fba2ad 476 codec->card->snd_card->number, 0, codec->name);
db2a4165
FM		 477 err = device_register(&codec->ac97->dev);
478 if (err < 0) {
479 snd_printk(KERN_ERR "Can't register ac97 bus\n");
480 codec->ac97->dev.bus = NULL;
481 return err;
482 }
483 return 0;
484}
485#endif
486
6f8ab4ac 487#ifdef CONFIG_PM_SLEEP
db2a4165 488/* powers down audio subsystem for suspend */
6f8ab4ac 489int snd_soc_suspend(struct device *dev)
db2a4165 490{
6f8ab4ac 491 struct snd_soc_card *card = dev_get_drvdata(dev);
2eea392d 492 struct snd_soc_codec *codec;
db2a4165
FM		 493 int i;
494
e3509ff0
DM		 495 /* If the initialization of this soc device failed, there is no codec
496 * associated with it. Just bail out in this case.
497 */
f0fba2ad 498 if (list_empty(&card->codec_dev_list))
e3509ff0
DM		 499 return 0;
500
6ed25978
AG		 501 /* Due to the resume being scheduled into a workqueue we could
502 * suspend before that's finished - wait for it to complete.
503 */
f0fba2ad
LG		 504 snd_power_lock(card->snd_card);
505 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
506 snd_power_unlock(card->snd_card);
6ed25978
AG		 507
508 /* we're going to block userspace touching us until resume completes */
f0fba2ad 509 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
6ed25978 510
a00f90f9 511 /* mute any active DACs */
f0fba2ad
LG		 512 for (i = 0; i < card->num_rtd; i++) {
513 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
514 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 515
f0fba2ad 516 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 517 continue;
518
f0fba2ad
LG		 519 if (drv->ops->digital_mute && dai->playback_active)
520 drv->ops->digital_mute(dai, 1);
db2a4165
FM		 521 }
522
4ccab3e7 523 /* suspend all pcms */
f0fba2ad
LG		 524 for (i = 0; i < card->num_rtd; i++) {
525 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 526 continue;
527
f0fba2ad 528 snd_pcm_suspend_all(card->rtd[i].pcm);
3efab7dc 529 }
4ccab3e7 530
87506549 531 if (card->suspend_pre)
70b2ac12 532 card->suspend_pre(card);
db2a4165 533
f0fba2ad
LG		 534 for (i = 0; i < card->num_rtd; i++) {
535 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
536 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 537
f0fba2ad 538 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 539 continue;
540
f0fba2ad
LG		 541 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
542 cpu_dai->driver->suspend(cpu_dai);
543 if (platform->driver->suspend && !platform->suspended) {
544 platform->driver->suspend(cpu_dai);
545 platform->suspended = 1;
546 }
db2a4165
FM		 547 }
548
549 /* close any waiting streams and save state */
f0fba2ad 550 for (i = 0; i < card->num_rtd; i++) {
5b84ba26 551 flush_delayed_work_sync(&card->rtd[i].delayed_work);
ce6120cc 552 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
f0fba2ad 553 }
db2a4165 554
f0fba2ad
LG		 555 for (i = 0; i < card->num_rtd; i++) {
556 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 557
f0fba2ad 558 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 559 continue;
560
f0fba2ad
LG		 561 if (driver->playback.stream_name != NULL)
562 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 563 SND_SOC_DAPM_STREAM_SUSPEND);
f0fba2ad
LG		 564
565 if (driver->capture.stream_name != NULL)
566 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM		 567 SND_SOC_DAPM_STREAM_SUSPEND);
568 }
569
f0fba2ad 570 /* suspend all CODECs */
2eea392d 571 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 572 /* If there are paths active then the CODEC will be held with
573 * bias _ON and should not be suspended. */
574 if (!codec->suspended && codec->driver->suspend) {
ce6120cc 575 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 576 case SND_SOC_BIAS_STANDBY:
577 case SND_SOC_BIAS_OFF:
578 codec->driver->suspend(codec, PMSG_SUSPEND);
579 codec->suspended = 1;
580 break;
581 default:
582 dev_dbg(codec->dev, "CODEC is on over suspend\n");
583 break;
584 }
1547aba9
MB		 585 }
586 }
db2a4165 587
f0fba2ad
LG		 588 for (i = 0; i < card->num_rtd; i++) {
589 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 590
f0fba2ad 591 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 592 continue;
593
f0fba2ad
LG		 594 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
595 cpu_dai->driver->suspend(cpu_dai);
db2a4165
FM		 596 }
597
87506549 598 if (card->suspend_post)
70b2ac12 599 card->suspend_post(card);
db2a4165
FM		 600
601 return 0;
602}
6f8ab4ac 603EXPORT_SYMBOL_GPL(snd_soc_suspend);
db2a4165 604
6ed25978
AG		 605/* deferred resume work, so resume can complete before we finished
606 * setting our codec back up, which can be very slow on I2C
607 */
608static void soc_resume_deferred(struct work_struct *work)
db2a4165 609{
f0fba2ad
LG		 610 struct snd_soc_card *card =
611 container_of(work, struct snd_soc_card, deferred_resume_work);
2eea392d 612 struct snd_soc_codec *codec;
db2a4165
FM		 613 int i;
614
6ed25978
AG		 615 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
616 * so userspace apps are blocked from touching us
617 */
618
f0fba2ad 619 dev_dbg(card->dev, "starting resume work\n");
6ed25978 620
9949788b 621 /* Bring us up into D2 so that DAPM starts enabling things */
f0fba2ad 622 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
9949788b 623
87506549 624 if (card->resume_pre)
70b2ac12 625 card->resume_pre(card);
db2a4165 626
f0fba2ad
LG		 627 /* resume AC97 DAIs */
628 for (i = 0; i < card->num_rtd; i++) {
629 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
3efab7dc 630
f0fba2ad 631 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 632 continue;
633
f0fba2ad
LG		 634 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
635 cpu_dai->driver->resume(cpu_dai);
636 }
637
2eea392d 638 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
f0fba2ad
LG		 639 /* If the CODEC was idle over suspend then it will have been
640 * left with bias OFF or STANDBY and suspended so we must now
641 * resume. Otherwise the suspend was suppressed.
642 */
643 if (codec->driver->resume && codec->suspended) {
ce6120cc 644 switch (codec->dapm.bias_level) {
f0fba2ad
LG		 645 case SND_SOC_BIAS_STANDBY:
646 case SND_SOC_BIAS_OFF:
647 codec->driver->resume(codec);
648 codec->suspended = 0;
649 break;
650 default:
651 dev_dbg(codec->dev, "CODEC was on over suspend\n");
652 break;
653 }
1547aba9
MB		 654 }
655 }
db2a4165 656
f0fba2ad
LG		 657 for (i = 0; i < card->num_rtd; i++) {
658 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
3efab7dc 659
f0fba2ad 660 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 661 continue;
662
f0fba2ad
LG		 663 if (driver->playback.stream_name != NULL)
664 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
db2a4165 665 SND_SOC_DAPM_STREAM_RESUME);
f0fba2ad
LG		 666
667 if (driver->capture.stream_name != NULL)
668 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
db2a4165
FM		 669 SND_SOC_DAPM_STREAM_RESUME);
670 }
671
3ff3f64b 672 /* unmute any active DACs */
f0fba2ad
LG		 673 for (i = 0; i < card->num_rtd; i++) {
674 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
675 struct snd_soc_dai_driver *drv = dai->driver;
3efab7dc 676
f0fba2ad 677 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 678 continue;
679
f0fba2ad
LG		 680 if (drv->ops->digital_mute && dai->playback_active)
681 drv->ops->digital_mute(dai, 0);
db2a4165
FM		 682 }
683
f0fba2ad
LG		 684 for (i = 0; i < card->num_rtd; i++) {
685 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
686 struct snd_soc_platform *platform = card->rtd[i].platform;
3efab7dc 687
f0fba2ad 688 if (card->rtd[i].dai_link->ignore_suspend)
3efab7dc
MB		 689 continue;
690
f0fba2ad
LG		 691 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
692 cpu_dai->driver->resume(cpu_dai);
693 if (platform->driver->resume && platform->suspended) {
694 platform->driver->resume(cpu_dai);
695 platform->suspended = 0;
696 }
db2a4165
FM		 697 }
698
87506549 699 if (card->resume_post)
70b2ac12 700 card->resume_post(card);
db2a4165 701
f0fba2ad 702 dev_dbg(card->dev, "resume work completed\n");
6ed25978
AG		 703
704 /* userspace can access us now we are back as we were before */
f0fba2ad 705 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
6ed25978
AG		 706}
707
708/* powers up audio subsystem after a suspend */
6f8ab4ac 709int snd_soc_resume(struct device *dev)
6ed25978 710{
6f8ab4ac 711 struct snd_soc_card *card = dev_get_drvdata(dev);
82e14e8b 712 int i, ac97_control = 0;
b9dd94a8 713
64ab9baa
MB		 714 /* AC97 devices might have other drivers hanging off them so
715 * need to resume immediately. Other drivers don't have that
716 * problem and may take a substantial amount of time to resume
717 * due to I/O costs and anti-pop so handle them out of line.
718 */
f0fba2ad
LG		 719 for (i = 0; i < card->num_rtd; i++) {
720 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
82e14e8b
SW		 721 ac97_control |= cpu_dai->driver->ac97_control;
722 }
723 if (ac97_control) {
724 dev_dbg(dev, "Resuming AC97 immediately\n");
725 soc_resume_deferred(&card->deferred_resume_work);
726 } else {
727 dev_dbg(dev, "Scheduling resume work\n");
728 if (!schedule_work(&card->deferred_resume_work))
729 dev_err(dev, "resume work item may be lost\n");
64ab9baa 730 }
6ed25978 731
db2a4165
FM		 732 return 0;
733}
6f8ab4ac 734EXPORT_SYMBOL_GPL(snd_soc_resume);
db2a4165 735#else
6f8ab4ac
MB		 736#define snd_soc_suspend NULL
737#define snd_soc_resume NULL
db2a4165
FM		 738#endif
739
02a06d30
BS		 740static struct snd_soc_dai_ops null_dai_ops = {
741};
742
f0fba2ad 743static int soc_bind_dai_link(struct snd_soc_card *card, int num)
db2a4165 744{
f0fba2ad
LG		 745 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
746 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
fe3e78e0 747 struct snd_soc_codec *codec;
435c5e25 748 struct snd_soc_platform *platform;
f0fba2ad 749 struct snd_soc_dai *codec_dai, *cpu_dai;
848dd8be 750 const char *platform_name;
435c5e25 751
f0fba2ad
LG		 752 if (rtd->complete)
753 return 1;
754 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
435c5e25 755
f0fba2ad
LG		 756 /* do we already have the CPU DAI for this link ? */
757 if (rtd->cpu_dai) {
758 goto find_codec;
759 }
760 /* no, then find CPU DAI from registered DAIs*/
761 list_for_each_entry(cpu_dai, &dai_list, list) {
762 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
f0fba2ad
LG		 763 rtd->cpu_dai = cpu_dai;
764 goto find_codec;
435c5e25 765 }
435c5e25 766 }
f0fba2ad
LG		 767 dev_dbg(card->dev, "CPU DAI %s not registered\n",
768 dai_link->cpu_dai_name);
6308419a 769
f0fba2ad
LG		 770find_codec:
771 /* do we already have the CODEC for this link ? */
772 if (rtd->codec) {
773 goto find_platform;
774 }
775
776 /* no, then find CODEC from registered CODECs*/
777 list_for_each_entry(codec, &codec_list, list) {
778 if (!strcmp(codec->name, dai_link->codec_name)) {
779 rtd->codec = codec;
780
f0fba2ad
LG		 781 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
782 list_for_each_entry(codec_dai, &dai_list, list) {
783 if (codec->dev == codec_dai->dev &&
784 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
785 rtd->codec_dai = codec_dai;
786 goto find_platform;
787 }
435c5e25 788 }
f0fba2ad
LG		 789 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
790 dai_link->codec_dai_name);
791
792 goto find_platform;
435c5e25 793 }
f0fba2ad
LG		 794 }
795 dev_dbg(card->dev, "CODEC %s not registered\n",
796 dai_link->codec_name);
6b05eda6 797
f0fba2ad 798find_platform:
848dd8be
MB		 799 /* do we need a platform? */
800 if (rtd->platform)
f0fba2ad 801 goto out;
848dd8be
MB		 802
803 /* if there's no platform we match on the empty platform */
804 platform_name = dai_link->platform_name;
805 if (!platform_name)
806 platform_name = "snd-soc-dummy";
807
808 /* no, then find one from the set of registered platforms */
f0fba2ad 809 list_for_each_entry(platform, &platform_list, list) {
848dd8be 810 if (!strcmp(platform->name, platform_name)) {
f0fba2ad
LG		 811 rtd->platform = platform;
812 goto out;
813 }
02a06d30
BS		 814 }
815
f0fba2ad
LG		 816 dev_dbg(card->dev, "platform %s not registered\n",
817 dai_link->platform_name);
818 return 0;
819
820out:
821 /* mark rtd as complete if we found all 4 of our client devices */
822 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
823 rtd->complete = 1;
824 card->num_rtd++;
825 }
826 return 1;
827}
828
589c3563
JN		 829static void soc_remove_codec(struct snd_soc_codec *codec)
830{
831 int err;
832
833 if (codec->driver->remove) {
834 err = codec->driver->remove(codec);
835 if (err < 0)
836 dev_err(codec->dev,
837 "asoc: failed to remove %s: %d\n",
838 codec->name, err);
839 }
840
841 /* Make sure all DAPM widgets are freed */
842 snd_soc_dapm_free(&codec->dapm);
843
844 soc_cleanup_codec_debugfs(codec);
845 codec->probed = 0;
846 list_del(&codec->card_list);
847 module_put(codec->dev->driver->owner);
848}
849
0168bf0d 850static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
f0fba2ad
LG		 851{
852 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
853 struct snd_soc_codec *codec = rtd->codec;
854 struct snd_soc_platform *platform = rtd->platform;
855 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
856 int err;
857
858 /* unregister the rtd device */
859 if (rtd->dev_registered) {
860 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
589c3563 861 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
f0fba2ad
LG		 862 device_unregister(&rtd->dev);
863 rtd->dev_registered = 0;
864 }
865
866 /* remove the CODEC DAI */
0168bf0d
LG		 867 if (codec_dai && codec_dai->probed &&
868 codec_dai->driver->remove_order == order) {
f0fba2ad
LG		 869 if (codec_dai->driver->remove) {
870 err = codec_dai->driver->remove(codec_dai);
871 if (err < 0)
872 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
6b05eda6 873 }
f0fba2ad
LG		 874 codec_dai->probed = 0;
875 list_del(&codec_dai->card_list);
876 }
6b05eda6 877
f0fba2ad 878 /* remove the platform */
0168bf0d
LG		 879 if (platform && platform->probed &&
880 platform->driver->remove_order == order) {
f0fba2ad
LG		 881 if (platform->driver->remove) {
882 err = platform->driver->remove(platform);
883 if (err < 0)
884 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
885 }
886 platform->probed = 0;
887 list_del(&platform->card_list);
888 module_put(platform->dev->driver->owner);
889 }
435c5e25 890
f0fba2ad 891 /* remove the CODEC */
0168bf0d
LG		 892 if (codec && codec->probed &&
893 codec->driver->remove_order == order)
589c3563 894 soc_remove_codec(codec);
db2a4165 895
f0fba2ad 896 /* remove the cpu_dai */
0168bf0d
LG		 897 if (cpu_dai && cpu_dai->probed &&
898 cpu_dai->driver->remove_order == order) {
f0fba2ad
LG		 899 if (cpu_dai->driver->remove) {
900 err = cpu_dai->driver->remove(cpu_dai);
901 if (err < 0)
902 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
db2a4165 903 }
f0fba2ad
LG		 904 cpu_dai->probed = 0;
905 list_del(&cpu_dai->card_list);
906 module_put(cpu_dai->dev->driver->owner);
db2a4165 907 }
f0fba2ad 908}
db2a4165 909
0671fd8e
KM		 910static void soc_remove_dai_links(struct snd_soc_card *card)
911{
0168bf0d 912 int dai, order;
0671fd8e 913
0168bf0d
LG		 914 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
915 order++) {
916 for (dai = 0; dai < card->num_rtd; dai++)
917 soc_remove_dai_link(card, dai, order);
918 }
0671fd8e
KM		 919 card->num_rtd = 0;
920}
921
ead9b919
JN		 922static void soc_set_name_prefix(struct snd_soc_card *card,
923 struct snd_soc_codec *codec)
924{
925 int i;
926
ff819b83 927 if (card->codec_conf == NULL)
ead9b919
JN		 928 return;
929
ff819b83
DP		 930 for (i = 0; i < card->num_configs; i++) {
931 struct snd_soc_codec_conf *map = &card->codec_conf[i];
ead9b919
JN		 932 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
933 codec->name_prefix = map->name_prefix;
934 break;
935 }
936 }
937}
938
589c3563
JN		 939static int soc_probe_codec(struct snd_soc_card *card,
940 struct snd_soc_codec *codec)
941{
942 int ret = 0;
89b95ac0 943 const struct snd_soc_codec_driver *driver = codec->driver;
589c3563
JN		 944
945 codec->card = card;
946 codec->dapm.card = card;
947 soc_set_name_prefix(card, codec);
948
70d29331
JN		 949 if (!try_module_get(codec->dev->driver->owner))
950 return -ENODEV;
951
d5d1e0be
LPC		 952 soc_init_codec_debugfs(codec);
953
77530150
LPC		 954 if (driver->dapm_widgets)
955 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
956 driver->num_dapm_widgets);
957
89b95ac0
MB		 958 if (driver->probe) {
959 ret = driver->probe(codec);
589c3563
JN		 960 if (ret < 0) {
961 dev_err(codec->dev,
962 "asoc: failed to probe CODEC %s: %d\n",
963 codec->name, ret);
70d29331 964 goto err_probe;
589c3563
JN		 965 }
966 }
967
b7af1daf
MB		 968 if (driver->controls)
969 snd_soc_add_controls(codec, driver->controls,
970 driver->num_controls);
89b95ac0
MB		 971 if (driver->dapm_routes)
972 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
973 driver->num_dapm_routes);
974
589c3563
JN		 975 /* mark codec as probed and add to card codec list */
976 codec->probed = 1;
977 list_add(&codec->card_list, &card->codec_dev_list);
7be31be8 978 list_add(&codec->dapm.list, &card->dapm_list);
589c3563 979
70d29331
JN		 980 return 0;
981
982err_probe:
d5d1e0be 983 soc_cleanup_codec_debugfs(codec);
70d29331
JN		 984 module_put(codec->dev->driver->owner);
985
589c3563
JN		 986 return ret;
987}
988
956245e9
LG		 989static int soc_probe_platform(struct snd_soc_card *card,
990 struct snd_soc_platform *platform)
991{
992 int ret = 0;
993 const struct snd_soc_platform_driver *driver = platform->driver;
994
995 platform->card = card;
996
997 if (!try_module_get(platform->dev->driver->owner))
998 return -ENODEV;
999
1000 if (driver->probe) {
1001 ret = driver->probe(platform);
1002 if (ret < 0) {
1003 dev_err(platform->dev,
1004 "asoc: failed to probe platform %s: %d\n",
1005 platform->name, ret);
1006 goto err_probe;
1007 }
1008 }
1009
1010 /* mark platform as probed and add to card platform list */
1011 platform->probed = 1;
1012 list_add(&platform->card_list, &card->platform_dev_list);
1013
1014 return 0;
1015
1016err_probe:
1017 module_put(platform->dev->driver->owner);
1018
1019 return ret;
1020}
1021
f0fba2ad
LG		 1022static void rtd_release(struct device *dev) {}
1023
589c3563
JN		 1024static int soc_post_component_init(struct snd_soc_card *card,
1025 struct snd_soc_codec *codec,
1026 int num, int dailess)
1027{
1028 struct snd_soc_dai_link *dai_link = NULL;
1029 struct snd_soc_aux_dev *aux_dev = NULL;
1030 struct snd_soc_pcm_runtime *rtd;
1031 const char *temp, *name;
1032 int ret = 0;
1033
1034 if (!dailess) {
1035 dai_link = &card->dai_link[num];
1036 rtd = &card->rtd[num];
1037 name = dai_link->name;
1038 } else {
1039 aux_dev = &card->aux_dev[num];
1040 rtd = &card->rtd_aux[num];
1041 name = aux_dev->name;
1042 }
0962bb21 1043 rtd->card = card;
589c3563
JN		 1044
1045 /* machine controls, routes and widgets are not prefixed */
1046 temp = codec->name_prefix;
1047 codec->name_prefix = NULL;
1048
1049 /* do machine specific initialization */
1050 if (!dailess && dai_link->init)
1051 ret = dai_link->init(rtd);
1052 else if (dailess && aux_dev->init)
1053 ret = aux_dev->init(&codec->dapm);
1054 if (ret < 0) {
1055 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1056 return ret;
1057 }
1058 codec->name_prefix = temp;
1059
1060 /* Make sure all DAPM widgets are instantiated */
1061 snd_soc_dapm_new_widgets(&codec->dapm);
589c3563
JN		 1062
1063 /* register the rtd device */
1064 rtd->codec = codec;
589c3563
JN		 1065 rtd->dev.parent = card->dev;
1066 rtd->dev.release = rtd_release;
1067 rtd->dev.init_name = name;
b8c0dab9 1068 mutex_init(&rtd->pcm_mutex);
589c3563
JN		 1069 ret = device_register(&rtd->dev);
1070 if (ret < 0) {
1071 dev_err(card->dev,
1072 "asoc: failed to register runtime device: %d\n", ret);
1073 return ret;
1074 }
1075 rtd->dev_registered = 1;
1076
1077 /* add DAPM sysfs entries for this codec */
1078 ret = snd_soc_dapm_sys_add(&rtd->dev);
1079 if (ret < 0)
1080 dev_err(codec->dev,
1081 "asoc: failed to add codec dapm sysfs entries: %d\n",
1082 ret);
1083
1084 /* add codec sysfs entries */
1085 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1086 if (ret < 0)
1087 dev_err(codec->dev,
1088 "asoc: failed to add codec sysfs files: %d\n", ret);
1089
1090 return 0;
1091}
1092
0168bf0d 1093static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
f0fba2ad
LG		 1094{
1095 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1096 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1097 struct snd_soc_codec *codec = rtd->codec;
1098 struct snd_soc_platform *platform = rtd->platform;
1099 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1100 int ret;
1101
0168bf0d
LG		 1102 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1103 card->name, num, order);
f0fba2ad
LG		 1104
1105 /* config components */
1106 codec_dai->codec = codec;
f0fba2ad 1107 cpu_dai->platform = platform;
f0fba2ad
LG		 1108 codec_dai->card = card;
1109 cpu_dai->card = card;
1110
1111 /* set default power off timeout */
1112 rtd->pmdown_time = pmdown_time;
1113
1114 /* probe the cpu_dai */
0168bf0d
LG		 1115 if (!cpu_dai->probed &&
1116 cpu_dai->driver->probe_order == order) {
61b61e3c
LG		 1117 if (!try_module_get(cpu_dai->dev->driver->owner))
1118 return -ENODEV;
1119
f0fba2ad
LG		 1120 if (cpu_dai->driver->probe) {
1121 ret = cpu_dai->driver->probe(cpu_dai);
1122 if (ret < 0) {
1123 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1124 cpu_dai->name);
61b61e3c 1125 module_put(cpu_dai->dev->driver->owner);
f0fba2ad
LG		 1126 return ret;
1127 }
1128 }
1129 cpu_dai->probed = 1;
1130 /* mark cpu_dai as probed and add to card cpu_dai list */
1131 list_add(&cpu_dai->card_list, &card->dai_dev_list);
db2a4165
FM		 1132 }
1133
f0fba2ad 1134 /* probe the CODEC */
0168bf0d
LG		 1135 if (!codec->probed &&
1136 codec->driver->probe_order == order) {
589c3563
JN		 1137 ret = soc_probe_codec(card, codec);
1138 if (ret < 0)
1139 return ret;
db2a4165
FM		 1140 }
1141
f0fba2ad 1142 /* probe the platform */
0168bf0d
LG		 1143 if (!platform->probed &&
1144 platform->driver->probe_order == order) {
956245e9
LG		 1145 ret = soc_probe_platform(card, platform);
1146 if (ret < 0)
1147 return ret;
f0fba2ad 1148 }
6ed25978 1149
f0fba2ad 1150 /* probe the CODEC DAI */
0168bf0d 1151 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
f0fba2ad
LG		 1152 if (codec_dai->driver->probe) {
1153 ret = codec_dai->driver->probe(codec_dai);
fe3e78e0 1154 if (ret < 0) {
f0fba2ad
LG		 1155 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1156 codec_dai->name);
1157 return ret;
fe3e78e0
MB		 1158 }
1159 }
f0fba2ad
LG		 1160
1161 /* mark cpu_dai as probed and add to card cpu_dai list */
1162 codec_dai->probed = 1;
1163 list_add(&codec_dai->card_list, &card->dai_dev_list);
fe3e78e0
MB		 1164 }
1165
0168bf0d
LG		 1166 /* complete DAI probe during last probe */
1167 if (order != SND_SOC_COMP_ORDER_LAST)
1168 return 0;
1169
589c3563
JN		 1170 ret = soc_post_component_init(card, codec, num, 0);
1171 if (ret)
f0fba2ad 1172 return ret;
fe3e78e0 1173
f0fba2ad
LG		 1174 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1175 if (ret < 0)
1176 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1177
f0fba2ad
LG		 1178 /* create the pcm */
1179 ret = soc_new_pcm(rtd, num);
1180 if (ret < 0) {
1181 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1182 return ret;
1183 }
1184
1185 /* add platform data for AC97 devices */
1186 if (rtd->codec_dai->driver->ac97_control)
1187 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1188
1189 return 0;
1190}
1191
fe3e78e0 1192#ifdef CONFIG_SND_SOC_AC97_BUS
f0fba2ad
LG		 1193static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1194{
1195 int ret;
1196
fe3e78e0
MB		 1197 /* Only instantiate AC97 if not already done by the adaptor
1198 * for the generic AC97 subsystem.
1199 */
f0fba2ad 1200 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
0562f788
MW		 1201 /*
1202 * It is possible that the AC97 device is already registered to
1203 * the device subsystem. This happens when the device is created
1204 * via snd_ac97_mixer(). Currently only SoC codec that does so
1205 * is the generic AC97 glue but others migh emerge.
1206 *
1207 * In those cases we don't try to register the device again.
1208 */
1209 if (!rtd->codec->ac97_created)
1210 return 0;
f0fba2ad
LG		 1211
1212 ret = soc_ac97_dev_register(rtd->codec);
fe3e78e0
MB		 1213 if (ret < 0) {
1214 printk(KERN_ERR "asoc: AC97 device register failed\n");
f0fba2ad 1215 return ret;
fe3e78e0 1216 }
f0fba2ad
LG		 1217
1218 rtd->codec->ac97_registered = 1;
fe3e78e0 1219 }
f0fba2ad
LG		 1220 return 0;
1221}
1222
1223static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1224{
1225 if (codec->ac97_registered) {
1226 soc_ac97_dev_unregister(codec);
1227 codec->ac97_registered = 0;
1228 }
1229}
fe3e78e0
MB		 1230#endif
1231
2eea392d
JN		 1232static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1233{
1234 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
2eea392d 1235 struct snd_soc_codec *codec;
676ad98a 1236 int ret = -ENODEV;
2eea392d
JN		 1237
1238 /* find CODEC from registered CODECs*/
1239 list_for_each_entry(codec, &codec_list, list) {
1240 if (!strcmp(codec->name, aux_dev->codec_name)) {
1241 if (codec->probed) {
1242 dev_err(codec->dev,
1243 "asoc: codec already probed");
1244 ret = -EBUSY;
1245 goto out;
1246 }
676ad98a 1247 goto found;
2eea392d
JN		 1248 }
1249 }
676ad98a
JN		 1250 /* codec not found */
1251 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1252 goto out;
2eea392d 1253
676ad98a 1254found:
589c3563 1255 ret = soc_probe_codec(card, codec);
2eea392d 1256 if (ret < 0)
589c3563 1257 return ret;
2eea392d 1258
589c3563 1259 ret = soc_post_component_init(card, codec, num, 1);
2eea392d
JN		 1260
1261out:
1262 return ret;
1263}
1264
1265static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1266{
1267 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1268 struct snd_soc_codec *codec = rtd->codec;
2eea392d
JN		 1269
1270 /* unregister the rtd device */
1271 if (rtd->dev_registered) {
589c3563 1272 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
2eea392d
JN		 1273 device_unregister(&rtd->dev);
1274 rtd->dev_registered = 0;
1275 }
1276
589c3563
JN		 1277 if (codec && codec->probed)
1278 soc_remove_codec(codec);
2eea392d
JN		 1279}
1280
fdf0f54d
DP		 1281static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1282 enum snd_soc_compress_type compress_type)
1283{
1284 int ret;
1285
1286 if (codec->cache_init)
1287 return 0;
1288
1289 /* override the compress_type if necessary */
1290 if (compress_type && codec->compress_type != compress_type)
1291 codec->compress_type = compress_type;
fdf0f54d
DP		 1292 ret = snd_soc_cache_init(codec);
1293 if (ret < 0) {
1294 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1295 ret);
1296 return ret;
1297 }
1298 codec->cache_init = 1;
1299 return 0;
1300}
1301
f0fba2ad
LG		 1302static void snd_soc_instantiate_card(struct snd_soc_card *card)
1303{
fdf0f54d
DP		 1304 struct snd_soc_codec *codec;
1305 struct snd_soc_codec_conf *codec_conf;
1306 enum snd_soc_compress_type compress_type;
0168bf0d 1307 int ret, i, order;
fe3e78e0 1308
f0fba2ad 1309 mutex_lock(&card->mutex);
dbe21408 1310
f0fba2ad
LG		 1311 if (card->instantiated) {
1312 mutex_unlock(&card->mutex);
1313 return;
1314 }
fe3e78e0 1315
f0fba2ad
LG		 1316 /* bind DAIs */
1317 for (i = 0; i < card->num_links; i++)
1318 soc_bind_dai_link(card, i);
fe3e78e0 1319
f0fba2ad
LG		 1320 /* bind completed ? */
1321 if (card->num_rtd != card->num_links) {
1322 mutex_unlock(&card->mutex);
1323 return;
1324 }
435c5e25 1325
fdf0f54d
DP		 1326 /* initialize the register cache for each available codec */
1327 list_for_each_entry(codec, &codec_list, list) {
1328 if (codec->cache_init)
1329 continue;
861f2faf
DP		 1330 /* by default we don't override the compress_type */
1331 compress_type = 0;
fdf0f54d
DP		 1332 /* check to see if we need to override the compress_type */
1333 for (i = 0; i < card->num_configs; ++i) {
1334 codec_conf = &card->codec_conf[i];
1335 if (!strcmp(codec->name, codec_conf->dev_name)) {
1336 compress_type = codec_conf->compress_type;
1337 if (compress_type && compress_type
1338 != codec->compress_type)
1339 break;
1340 }
1341 }
fdf0f54d
DP		 1342 ret = snd_soc_init_codec_cache(codec, compress_type);
1343 if (ret < 0) {
1344 mutex_unlock(&card->mutex);
1345 return;
1346 }
1347 }
1348
f0fba2ad
LG		 1349 /* card bind complete so register a sound card */
1350 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1351 card->owner, 0, &card->snd_card);
1352 if (ret < 0) {
1353 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1354 card->name);
1355 mutex_unlock(&card->mutex);
1356 return;
1357 }
1358 card->snd_card->dev = card->dev;
1359
e37a4970
MB		 1360 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1361 card->dapm.dev = card->dev;
1362 card->dapm.card = card;
1363 list_add(&card->dapm.list, &card->dapm_list);
1364
d5d1e0be
LPC		 1365#ifdef CONFIG_DEBUG_FS
1366 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1367#endif
1368
88ee1c61 1369#ifdef CONFIG_PM_SLEEP
f0fba2ad
LG		 1370 /* deferred resume work */
1371 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1372#endif
db2a4165 1373
9a841ebb
MB		 1374 if (card->dapm_widgets)
1375 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1376 card->num_dapm_widgets);
1377
f0fba2ad
LG		 1378 /* initialise the sound card only once */
1379 if (card->probe) {
e7361ec4 1380 ret = card->probe(card);
f0fba2ad
LG		 1381 if (ret < 0)
1382 goto card_probe_error;
1383 }
fe3e78e0 1384
0168bf0d
LG		 1385 /* early DAI link probe */
1386 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1387 order++) {
1388 for (i = 0; i < card->num_links; i++) {
1389 ret = soc_probe_dai_link(card, i, order);
1390 if (ret < 0) {
1391 pr_err("asoc: failed to instantiate card %s: %d\n",
321de0d0 1392 card->name, ret);
0168bf0d
LG		 1393 goto probe_dai_err;
1394 }
f0fba2ad
LG		 1395 }
1396 }
db2a4165 1397
2eea392d
JN		 1398 for (i = 0; i < card->num_aux_devs; i++) {
1399 ret = soc_probe_aux_dev(card, i);
1400 if (ret < 0) {
1401 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1402 card->name, ret);
1403 goto probe_aux_dev_err;
1404 }
1405 }
1406
b7af1daf
MB		 1407 /* We should have a non-codec control add function but we don't */
1408 if (card->controls)
1409 snd_soc_add_controls(list_first_entry(&card->codec_dev_list,
1410 struct snd_soc_codec,
1411 card_list),
1412 card->controls,
1413 card->num_controls);
1414
b8ad29de
MB		 1415 if (card->dapm_routes)
1416 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1417 card->num_dapm_routes);
1418
f0fba2ad 1419 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
f0fba2ad 1420 "%s", card->name);
22de71ba
LG		 1421 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1422 "%s", card->long_name ? card->long_name : card->name);
1423 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2b39535b 1424 "%s", card->driver_name ? card->driver_name : card->name);
f0fba2ad 1425
28e9ad92
MB		 1426 if (card->late_probe) {
1427 ret = card->late_probe(card);
1428 if (ret < 0) {
1429 dev_err(card->dev, "%s late_probe() failed: %d\n",
1430 card->name, ret);
1431 goto probe_aux_dev_err;
1432 }
1433 }
1434
f0fba2ad
LG		 1435 ret = snd_card_register(card->snd_card);
1436 if (ret < 0) {
1437 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
6b3ed785 1438 goto probe_aux_dev_err;
db2a4165
FM		 1439 }
1440
f0fba2ad
LG		 1441#ifdef CONFIG_SND_SOC_AC97_BUS
1442 /* register any AC97 codecs */
1443 for (i = 0; i < card->num_rtd; i++) {
6b3ed785
AL		 1444 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1445 if (ret < 0) {
1446 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1447 while (--i >= 0)
7d8316df 1448 soc_unregister_ac97_dai_link(card->rtd[i].codec);
6b3ed785 1449 goto probe_aux_dev_err;
f0fba2ad 1450 }
6b3ed785 1451 }
f0fba2ad
LG		 1452#endif
1453
1454 card->instantiated = 1;
1455 mutex_unlock(&card->mutex);
1456 return;
1457
2eea392d
JN		 1458probe_aux_dev_err:
1459 for (i = 0; i < card->num_aux_devs; i++)
1460 soc_remove_aux_dev(card, i);
1461
f0fba2ad 1462probe_dai_err:
0671fd8e 1463 soc_remove_dai_links(card);
f0fba2ad
LG		 1464
1465card_probe_error:
87506549 1466 if (card->remove)
e7361ec4 1467 card->remove(card);
f0fba2ad
LG		 1468
1469 snd_card_free(card->snd_card);
1470
1471 mutex_unlock(&card->mutex);
435c5e25 1472}
db2a4165 1473
435c5e25 1474/*
421f91d2 1475 * Attempt to initialise any uninitialised cards. Must be called with
435c5e25
MB		 1476 * client_mutex.
1477 */
1478static void snd_soc_instantiate_cards(void)
1479{
1480 struct snd_soc_card *card;
1481 list_for_each_entry(card, &card_list, list)
1482 snd_soc_instantiate_card(card);
1483}
1484
1485/* probes a new socdev */
1486static int soc_probe(struct platform_device *pdev)
1487{
f0fba2ad 1488 struct snd_soc_card *card = platform_get_drvdata(pdev);
435c5e25 1489 int ret = 0;
435c5e25 1490
70a7ca34
VK		 1491 /*
1492 * no card, so machine driver should be registering card
1493 * we should not be here in that case so ret error
1494 */
1495 if (!card)
1496 return -EINVAL;
1497
435c5e25
MB		 1498 /* Bodge while we unpick instantiation */
1499 card->dev = &pdev->dev;
f0fba2ad 1500
435c5e25
MB		 1501 ret = snd_soc_register_card(card);
1502 if (ret != 0) {
1503 dev_err(&pdev->dev, "Failed to register card\n");
1504 return ret;
1505 }
1506
1507 return 0;
db2a4165
FM		 1508}
1509
b0e26485 1510static int soc_cleanup_card_resources(struct snd_soc_card *card)
db2a4165
FM		 1511{
1512 int i;
db2a4165 1513
b0e26485
VK		 1514 /* make sure any delayed work runs */
1515 for (i = 0; i < card->num_rtd; i++) {
1516 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1517 flush_delayed_work_sync(&rtd->delayed_work);
1518 }
914dc182 1519
b0e26485
VK		 1520 /* remove auxiliary devices */
1521 for (i = 0; i < card->num_aux_devs; i++)
1522 soc_remove_aux_dev(card, i);
db2a4165 1523
b0e26485 1524 /* remove and free each DAI */
0671fd8e 1525 soc_remove_dai_links(card);
2eea392d 1526
b0e26485 1527 soc_cleanup_card_debugfs(card);
f0fba2ad 1528
b0e26485
VK		 1529 /* remove the card */
1530 if (card->remove)
e7361ec4 1531 card->remove(card);
a6052154 1532
0aaae527
LPC		 1533 snd_soc_dapm_free(&card->dapm);
1534
b0e26485
VK		 1535 kfree(card->rtd);
1536 snd_card_free(card->snd_card);
1537 return 0;
1538
1539}
1540
1541/* removes a socdev */
1542static int soc_remove(struct platform_device *pdev)
1543{
1544 struct snd_soc_card *card = platform_get_drvdata(pdev);
db2a4165 1545
c5af3a2e 1546 snd_soc_unregister_card(card);
db2a4165
FM		 1547 return 0;
1548}
1549
6f8ab4ac 1550int snd_soc_poweroff(struct device *dev)
51737470 1551{
6f8ab4ac 1552 struct snd_soc_card *card = dev_get_drvdata(dev);
f0fba2ad 1553 int i;
51737470
MB		 1554
1555 if (!card->instantiated)
416356fc 1556 return 0;
51737470
MB		 1557
1558 /* Flush out pmdown_time work - we actually do want to run it
1559 * now, we're shutting down so no imminent restart. */
f0fba2ad
LG		 1560 for (i = 0; i < card->num_rtd; i++) {
1561 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
5b84ba26 1562 flush_delayed_work_sync(&rtd->delayed_work);
f0fba2ad 1563 }
51737470 1564
f0fba2ad 1565 snd_soc_dapm_shutdown(card);
416356fc
MB		 1566
1567 return 0;
51737470 1568}
6f8ab4ac 1569EXPORT_SYMBOL_GPL(snd_soc_poweroff);
51737470 1570
6f8ab4ac
MB		 1571const struct dev_pm_ops snd_soc_pm_ops = {
1572 .suspend = snd_soc_suspend,
1573 .resume = snd_soc_resume,
1574 .poweroff = snd_soc_poweroff,
416356fc 1575};
deb2607e 1576EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
416356fc 1577
db2a4165
FM		 1578/* ASoC platform driver */
1579static struct platform_driver soc_driver = {
1580 .driver = {
1581 .name = "soc-audio",
8b45a209 1582 .owner = THIS_MODULE,
6f8ab4ac 1583 .pm = &snd_soc_pm_ops,
db2a4165
FM		 1584 },
1585 .probe = soc_probe,
1586 .remove = soc_remove,
db2a4165
FM		 1587};
1588
096e49d5
MB		 1589/**
1590 * snd_soc_codec_volatile_register: Report if a register is volatile.
1591 *
1592 * @codec: CODEC to query.
1593 * @reg: Register to query.
1594 *
1595 * Boolean function indiciating if a CODEC register is volatile.
1596 */
181e055e
MB		 1597int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1598 unsigned int reg)
096e49d5 1599{
1500b7b5
DP		 1600 if (codec->volatile_register)
1601 return codec->volatile_register(codec, reg);
096e49d5
MB		 1602 else
1603 return 0;
1604}
1605EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1606
239c9706
DP		 1607/**
1608 * snd_soc_codec_readable_register: Report if a register is readable.
1609 *
1610 * @codec: CODEC to query.
1611 * @reg: Register to query.
1612 *
1613 * Boolean function indicating if a CODEC register is readable.
1614 */
1615int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1616 unsigned int reg)
1617{
1618 if (codec->readable_register)
1619 return codec->readable_register(codec, reg);
1620 else
1621 return 0;
1622}
1623EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1624
1625/**
1626 * snd_soc_codec_writable_register: Report if a register is writable.
1627 *
1628 * @codec: CODEC to query.
1629 * @reg: Register to query.
1630 *
1631 * Boolean function indicating if a CODEC register is writable.
1632 */
1633int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1634 unsigned int reg)
1635{
1636 if (codec->writable_register)
1637 return codec->writable_register(codec, reg);
1638 else
1639 return 0;
1640}
1641EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1642
f1442bc1
LG		 1643int snd_soc_platform_read(struct snd_soc_platform *platform,
1644 unsigned int reg)
1645{
1646 unsigned int ret;
1647
1648 if (!platform->driver->read) {
1649 dev_err(platform->dev, "platform has no read back\n");
1650 return -1;
1651 }
1652
1653 ret = platform->driver->read(platform, reg);
1654 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1655
1656 return ret;
1657}
1658EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1659
1660int snd_soc_platform_write(struct snd_soc_platform *platform,
1661 unsigned int reg, unsigned int val)
1662{
1663 if (!platform->driver->write) {
1664 dev_err(platform->dev, "platform has no write back\n");
1665 return -1;
1666 }
1667
1668 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1669 return platform->driver->write(platform, reg, val);
1670}
1671EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1672
db2a4165
FM		 1673/**
1674 * snd_soc_new_ac97_codec - initailise AC97 device
1675 * @codec: audio codec
1676 * @ops: AC97 bus operations
1677 * @num: AC97 codec number
1678 *
1679 * Initialises AC97 codec resources for use by ad-hoc devices only.
1680 */
1681int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1682 struct snd_ac97_bus_ops *ops, int num)
1683{
1684 mutex_lock(&codec->mutex);
1685
1686 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1687 if (codec->ac97 == NULL) {
1688 mutex_unlock(&codec->mutex);
1689 return -ENOMEM;
1690 }
1691
1692 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1693 if (codec->ac97->bus == NULL) {
1694 kfree(codec->ac97);
1695 codec->ac97 = NULL;
1696 mutex_unlock(&codec->mutex);
1697 return -ENOMEM;
1698 }
1699
1700 codec->ac97->bus->ops = ops;
1701 codec->ac97->num = num;
0562f788
MW		 1702
1703 /*
1704 * Mark the AC97 device to be created by us. This way we ensure that the
1705 * device will be registered with the device subsystem later on.
1706 */
1707 codec->ac97_created = 1;
1708
db2a4165
FM		 1709 mutex_unlock(&codec->mutex);
1710 return 0;
1711}
1712EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1713
1714/**
1715 * snd_soc_free_ac97_codec - free AC97 codec device
1716 * @codec: audio codec
1717 *
1718 * Frees AC97 codec device resources.
1719 */
1720void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1721{
1722 mutex_lock(&codec->mutex);
f0fba2ad
LG		 1723#ifdef CONFIG_SND_SOC_AC97_BUS
1724 soc_unregister_ac97_dai_link(codec);
1725#endif
db2a4165
FM		 1726 kfree(codec->ac97->bus);
1727 kfree(codec->ac97);
1728 codec->ac97 = NULL;
0562f788 1729 codec->ac97_created = 0;
db2a4165
FM		 1730 mutex_unlock(&codec->mutex);
1731}
1732EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1733
c3753707
MB		 1734unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1735{
1736 unsigned int ret;
1737
c3acec26 1738 ret = codec->read(codec, reg);
c3753707 1739 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
a8b1d34f 1740 trace_snd_soc_reg_read(codec, reg, ret);
c3753707
MB		 1741
1742 return ret;
1743}
1744EXPORT_SYMBOL_GPL(snd_soc_read);
1745
1746unsigned int snd_soc_write(struct snd_soc_codec *codec,
1747 unsigned int reg, unsigned int val)
1748{
1749 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
a8b1d34f 1750 trace_snd_soc_reg_write(codec, reg, val);
c3acec26 1751 return codec->write(codec, reg, val);
c3753707
MB		 1752}
1753EXPORT_SYMBOL_GPL(snd_soc_write);
1754
5fb609d4
DP		 1755unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1756 unsigned int reg, const void *data, size_t len)
1757{
1758 return codec->bulk_write_raw(codec, reg, data, len);
1759}
1760EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1761
db2a4165
FM		 1762/**
1763 * snd_soc_update_bits - update codec register bits
1764 * @codec: audio codec
1765 * @reg: codec register
1766 * @mask: register mask
1767 * @value: new value
1768 *
1769 * Writes new register value.
1770 *
180c329d 1771 * Returns 1 for change, 0 for no change, or negative error code.
db2a4165
FM		 1772 */
1773int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 1774 unsigned int mask, unsigned int value)
db2a4165
FM		 1775{
1776 int change;
46f5822f 1777 unsigned int old, new;
180c329d
TT		 1778 int ret;
1779
1780 ret = snd_soc_read(codec, reg);
1781 if (ret < 0)
1782 return ret;
db2a4165 1783
180c329d 1784 old = ret;
78bf3c9a 1785 new = (old & ~mask) | (value & mask);
db2a4165 1786 change = old != new;
180c329d
TT		 1787 if (change) {
1788 ret = snd_soc_write(codec, reg, new);
1789 if (ret < 0)
1790 return ret;
1791 }
db2a4165 1792
db2a4165
FM		 1793 return change;
1794}
1795EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1796
6c508c62
EN		 1797/**
1798 * snd_soc_update_bits_locked - update codec register bits
1799 * @codec: audio codec
1800 * @reg: codec register
1801 * @mask: register mask
1802 * @value: new value
1803 *
1804 * Writes new register value, and takes the codec mutex.
1805 *
1806 * Returns 1 for change else 0.
1807 */
dd1b3d53
MB		 1808int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1809 unsigned short reg, unsigned int mask,
1810 unsigned int value)
6c508c62
EN		 1811{
1812 int change;
1813
1814 mutex_lock(&codec->mutex);
1815 change = snd_soc_update_bits(codec, reg, mask, value);
1816 mutex_unlock(&codec->mutex);
1817
1818 return change;
1819}
dd1b3d53 1820EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
6c508c62 1821
db2a4165
FM		 1822/**
1823 * snd_soc_test_bits - test register for change
1824 * @codec: audio codec
1825 * @reg: codec register
1826 * @mask: register mask
1827 * @value: new value
1828 *
1829 * Tests a register with a new value and checks if the new value is
1830 * different from the old value.
1831 *
1832 * Returns 1 for change else 0.
1833 */
1834int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
46f5822f 1835 unsigned int mask, unsigned int value)
db2a4165
FM		 1836{
1837 int change;
46f5822f 1838 unsigned int old, new;
db2a4165 1839
db2a4165
FM		 1840 old = snd_soc_read(codec, reg);
1841 new = (old & ~mask) | value;
1842 change = old != new;
db2a4165
FM		 1843
1844 return change;
1845}
1846EXPORT_SYMBOL_GPL(snd_soc_test_bits);
1847
db2a4165
FM		 1848/**
1849 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1850 * @substream: the pcm substream
1851 * @hw: the hardware parameters
1852 *
1853 * Sets the substream runtime hardware parameters.
1854 */
1855int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
1856 const struct snd_pcm_hardware *hw)
1857{
1858 struct snd_pcm_runtime *runtime = substream->runtime;
1859 runtime->hw.info = hw->info;
1860 runtime->hw.formats = hw->formats;
1861 runtime->hw.period_bytes_min = hw->period_bytes_min;
1862 runtime->hw.period_bytes_max = hw->period_bytes_max;
1863 runtime->hw.periods_min = hw->periods_min;
1864 runtime->hw.periods_max = hw->periods_max;
1865 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
1866 runtime->hw.fifo_size = hw->fifo_size;
1867 return 0;
1868}
1869EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
1870
1871/**
1872 * snd_soc_cnew - create new control
1873 * @_template: control template
1874 * @data: control private data
ac11a2b3 1875 * @long_name: control long name
efb7ac3f 1876 * @prefix: control name prefix
db2a4165
FM		 1877 *
1878 * Create a new mixer control from a template control.
1879 *
1880 * Returns 0 for success, else error.
1881 */
1882struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
efb7ac3f
MB		 1883 void *data, char *long_name,
1884 const char *prefix)
db2a4165
FM		 1885{
1886 struct snd_kcontrol_new template;
efb7ac3f
MB		 1887 struct snd_kcontrol *kcontrol;
1888 char *name = NULL;
1889 int name_len;
db2a4165
FM		 1890
1891 memcpy(&template, _template, sizeof(template));
db2a4165
FM		 1892 template.index = 0;
1893
efb7ac3f
MB		 1894 if (!long_name)
1895 long_name = template.name;
1896
1897 if (prefix) {
1898 name_len = strlen(long_name) + strlen(prefix) + 2;
1899 name = kmalloc(name_len, GFP_ATOMIC);
1900 if (!name)
1901 return NULL;
1902
1903 snprintf(name, name_len, "%s %s", prefix, long_name);
1904
1905 template.name = name;
1906 } else {
1907 template.name = long_name;
1908 }
1909
1910 kcontrol = snd_ctl_new1(&template, data);
1911
1912 kfree(name);
1913
1914 return kcontrol;
db2a4165
FM		 1915}
1916EXPORT_SYMBOL_GPL(snd_soc_cnew);
1917
3e8e1952
IM		 1918/**
1919 * snd_soc_add_controls - add an array of controls to a codec.
1920 * Convienience function to add a list of controls. Many codecs were
1921 * duplicating this code.
1922 *
1923 * @codec: codec to add controls to
1924 * @controls: array of controls to add
1925 * @num_controls: number of elements in the array
1926 *
1927 * Return 0 for success, else error.
1928 */
1929int snd_soc_add_controls(struct snd_soc_codec *codec,
1930 const struct snd_kcontrol_new *controls, int num_controls)
1931{
f0fba2ad 1932 struct snd_card *card = codec->card->snd_card;
3e8e1952
IM		 1933 int err, i;
1934
1935 for (i = 0; i < num_controls; i++) {
1936 const struct snd_kcontrol_new *control = &controls[i];
efb7ac3f
MB		 1937 err = snd_ctl_add(card, snd_soc_cnew(control, codec,
1938 control->name,
1939 codec->name_prefix));
3e8e1952 1940 if (err < 0) {
082100dc 1941 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
efb7ac3f 1942 codec->name, control->name, err);
3e8e1952
IM		 1943 return err;
1944 }
1945 }
1946
1947 return 0;
1948}
1949EXPORT_SYMBOL_GPL(snd_soc_add_controls);
1950
db2a4165
FM		 1951/**
1952 * snd_soc_info_enum_double - enumerated double mixer info callback
1953 * @kcontrol: mixer control
1954 * @uinfo: control element information
1955 *
1956 * Callback to provide information about a double enumerated
1957 * mixer control.
1958 *
1959 * Returns 0 for success.
1960 */
1961int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
1962 struct snd_ctl_elem_info *uinfo)
1963{
1964 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
1965
1966 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1967 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
f8ba0b7b 1968 uinfo->value.enumerated.items = e->max;
db2a4165 1969
f8ba0b7b
JS		 1970 if (uinfo->value.enumerated.item > e->max - 1)
1971 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 1972 strcpy(uinfo->value.enumerated.name,
1973 e->texts[uinfo->value.enumerated.item]);
1974 return 0;
1975}
1976EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
1977
1978/**
1979 * snd_soc_get_enum_double - enumerated double mixer get callback
1980 * @kcontrol: mixer control
ac11a2b3 1981 * @ucontrol: control element information
db2a4165
FM		 1982 *
1983 * Callback to get the value of a double enumerated mixer.
1984 *
1985 * Returns 0 for success.
1986 */
1987int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
1988 struct snd_ctl_elem_value *ucontrol)
1989{
1990 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
1991 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 1992 unsigned int val, bitmask;
db2a4165 1993
f8ba0b7b 1994 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165
FM		 1995 ;
1996 val = snd_soc_read(codec, e->reg);
3ff3f64b
MB		 1997 ucontrol->value.enumerated.item[0]
1998 = (val >> e->shift_l) & (bitmask - 1);
db2a4165
FM		 1999 if (e->shift_l != e->shift_r)
2000 ucontrol->value.enumerated.item[1] =
2001 (val >> e->shift_r) & (bitmask - 1);
2002
2003 return 0;
2004}
2005EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2006
2007/**
2008 * snd_soc_put_enum_double - enumerated double mixer put callback
2009 * @kcontrol: mixer control
ac11a2b3 2010 * @ucontrol: control element information
db2a4165
FM		 2011 *
2012 * Callback to set the value of a double enumerated mixer.
2013 *
2014 * Returns 0 for success.
2015 */
2016int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2017 struct snd_ctl_elem_value *ucontrol)
2018{
2019 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2020 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2021 unsigned int val;
2022 unsigned int mask, bitmask;
db2a4165 2023
f8ba0b7b 2024 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
db2a4165 2025 ;
f8ba0b7b 2026 if (ucontrol->value.enumerated.item[0] > e->max - 1)
db2a4165
FM		 2027 return -EINVAL;
2028 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2029 mask = (bitmask - 1) << e->shift_l;
2030 if (e->shift_l != e->shift_r) {
f8ba0b7b 2031 if (ucontrol->value.enumerated.item[1] > e->max - 1)
db2a4165
FM		 2032 return -EINVAL;
2033 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2034 mask |= (bitmask - 1) << e->shift_r;
2035 }
2036
6c508c62 2037 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
db2a4165
FM		 2038}
2039EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2040
2e72f8e3
PU		 2041/**
2042 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2043 * @kcontrol: mixer control
2044 * @ucontrol: control element information
2045 *
2046 * Callback to get the value of a double semi enumerated mixer.
2047 *
2048 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2049 * used for handling bitfield coded enumeration for example.
2050 *
2051 * Returns 0 for success.
2052 */
2053int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2054 struct snd_ctl_elem_value *ucontrol)
2055{
2056 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2057 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f 2058 unsigned int reg_val, val, mux;
2e72f8e3
PU		 2059
2060 reg_val = snd_soc_read(codec, e->reg);
2061 val = (reg_val >> e->shift_l) & e->mask;
2062 for (mux = 0; mux < e->max; mux++) {
2063 if (val == e->values[mux])
2064 break;
2065 }
2066 ucontrol->value.enumerated.item[0] = mux;
2067 if (e->shift_l != e->shift_r) {
2068 val = (reg_val >> e->shift_r) & e->mask;
2069 for (mux = 0; mux < e->max; mux++) {
2070 if (val == e->values[mux])
2071 break;
2072 }
2073 ucontrol->value.enumerated.item[1] = mux;
2074 }
2075
2076 return 0;
2077}
2078EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2079
2080/**
2081 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2082 * @kcontrol: mixer control
2083 * @ucontrol: control element information
2084 *
2085 * Callback to set the value of a double semi enumerated mixer.
2086 *
2087 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2088 * used for handling bitfield coded enumeration for example.
2089 *
2090 * Returns 0 for success.
2091 */
2092int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2093 struct snd_ctl_elem_value *ucontrol)
2094{
2095 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
74155556 2096 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46f5822f
DR		 2097 unsigned int val;
2098 unsigned int mask;
2e72f8e3
PU		 2099
2100 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2101 return -EINVAL;
2102 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2103 mask = e->mask << e->shift_l;
2104 if (e->shift_l != e->shift_r) {
2105 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2106 return -EINVAL;
2107 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2108 mask |= e->mask << e->shift_r;
2109 }
2110
6c508c62 2111 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2e72f8e3
PU		 2112}
2113EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2114
db2a4165
FM		 2115/**
2116 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2117 * @kcontrol: mixer control
2118 * @uinfo: control element information
2119 *
2120 * Callback to provide information about an external enumerated
2121 * single mixer.
2122 *
2123 * Returns 0 for success.
2124 */
2125int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2126 struct snd_ctl_elem_info *uinfo)
2127{
2128 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2129
2130 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2131 uinfo->count = 1;
f8ba0b7b 2132 uinfo->value.enumerated.items = e->max;
db2a4165 2133
f8ba0b7b
JS		 2134 if (uinfo->value.enumerated.item > e->max - 1)
2135 uinfo->value.enumerated.item = e->max - 1;
db2a4165
FM		 2136 strcpy(uinfo->value.enumerated.name,
2137 e->texts[uinfo->value.enumerated.item]);
2138 return 0;
2139}
2140EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2141
2142/**
2143 * snd_soc_info_volsw_ext - external single mixer info callback
2144 * @kcontrol: mixer control
2145 * @uinfo: control element information
2146 *
2147 * Callback to provide information about a single external mixer control.
2148 *
2149 * Returns 0 for success.
2150 */
2151int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2152 struct snd_ctl_elem_info *uinfo)
2153{
a7a4ac86
PZ		 2154 int max = kcontrol->private_value;
2155
fd5dfad9 2156 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2157 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2158 else
2159 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2160
db2a4165
FM		 2161 uinfo->count = 1;
2162 uinfo->value.integer.min = 0;
a7a4ac86 2163 uinfo->value.integer.max = max;
db2a4165
FM		 2164 return 0;
2165}
2166EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2167
db2a4165
FM		 2168/**
2169 * snd_soc_info_volsw - single mixer info callback
2170 * @kcontrol: mixer control
2171 * @uinfo: control element information
2172 *
2173 * Callback to provide information about a single mixer control.
2174 *
2175 * Returns 0 for success.
2176 */
2177int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2178 struct snd_ctl_elem_info *uinfo)
2179{
4eaa9819
JS		 2180 struct soc_mixer_control *mc =
2181 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2182 int platform_max;
762b8df7 2183 unsigned int shift = mc->shift;
815ecf8d 2184 unsigned int rshift = mc->rshift;
db2a4165 2185
d11bb4a9
PU		 2186 if (!mc->platform_max)
2187 mc->platform_max = mc->max;
2188 platform_max = mc->platform_max;
2189
2190 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2191 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2192 else
2193 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2194
db2a4165
FM		 2195 uinfo->count = shift == rshift ? 1 : 2;
2196 uinfo->value.integer.min = 0;
d11bb4a9 2197 uinfo->value.integer.max = platform_max;
db2a4165
FM		 2198 return 0;
2199}
2200EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2201
2202/**
2203 * snd_soc_get_volsw - single mixer get callback
2204 * @kcontrol: mixer control
ac11a2b3 2205 * @ucontrol: control element information
db2a4165
FM		 2206 *
2207 * Callback to get the value of a single mixer control.
2208 *
2209 * Returns 0 for success.
2210 */
2211int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2212 struct snd_ctl_elem_value *ucontrol)
2213{
4eaa9819
JS		 2214 struct soc_mixer_control *mc =
2215 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2216 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2217 unsigned int reg = mc->reg;
2218 unsigned int shift = mc->shift;
2219 unsigned int rshift = mc->rshift;
4eaa9819 2220 int max = mc->max;
815ecf8d
JS		 2221 unsigned int mask = (1 << fls(max)) - 1;
2222 unsigned int invert = mc->invert;
db2a4165
FM		 2223
2224 ucontrol->value.integer.value[0] =
2225 (snd_soc_read(codec, reg) >> shift) & mask;
2226 if (shift != rshift)
2227 ucontrol->value.integer.value[1] =
2228 (snd_soc_read(codec, reg) >> rshift) & mask;
2229 if (invert) {
2230 ucontrol->value.integer.value[0] =
a7a4ac86 2231 max - ucontrol->value.integer.value[0];
db2a4165
FM		 2232 if (shift != rshift)
2233 ucontrol->value.integer.value[1] =
a7a4ac86 2234 max - ucontrol->value.integer.value[1];
db2a4165
FM		 2235 }
2236
2237 return 0;
2238}
2239EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2240
2241/**
2242 * snd_soc_put_volsw - single mixer put callback
2243 * @kcontrol: mixer control
ac11a2b3 2244 * @ucontrol: control element information
db2a4165
FM		 2245 *
2246 * Callback to set the value of a single mixer control.
2247 *
2248 * Returns 0 for success.
2249 */
2250int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2251 struct snd_ctl_elem_value *ucontrol)
2252{
4eaa9819
JS		 2253 struct soc_mixer_control *mc =
2254 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2255 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2256 unsigned int reg = mc->reg;
2257 unsigned int shift = mc->shift;
2258 unsigned int rshift = mc->rshift;
4eaa9819 2259 int max = mc->max;
815ecf8d
JS		 2260 unsigned int mask = (1 << fls(max)) - 1;
2261 unsigned int invert = mc->invert;
46f5822f 2262 unsigned int val, val2, val_mask;
db2a4165
FM		 2263
2264 val = (ucontrol->value.integer.value[0] & mask);
2265 if (invert)
a7a4ac86 2266 val = max - val;
db2a4165
FM		 2267 val_mask = mask << shift;
2268 val = val << shift;
2269 if (shift != rshift) {
2270 val2 = (ucontrol->value.integer.value[1] & mask);
2271 if (invert)
a7a4ac86 2272 val2 = max - val2;
db2a4165
FM		 2273 val_mask |= mask << rshift;
2274 val |= val2 << rshift;
2275 }
6c508c62 2276 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
db2a4165
FM		 2277}
2278EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2279
2280/**
2281 * snd_soc_info_volsw_2r - double mixer info callback
2282 * @kcontrol: mixer control
2283 * @uinfo: control element information
2284 *
2285 * Callback to provide information about a double mixer control that
2286 * spans 2 codec registers.
2287 *
2288 * Returns 0 for success.
2289 */
2290int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2291 struct snd_ctl_elem_info *uinfo)
2292{
4eaa9819
JS		 2293 struct soc_mixer_control *mc =
2294 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2295 int platform_max;
a7a4ac86 2296
d11bb4a9
PU		 2297 if (!mc->platform_max)
2298 mc->platform_max = mc->max;
2299 platform_max = mc->platform_max;
2300
2301 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
a7a4ac86
PZ		 2302 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2303 else
2304 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
db2a4165 2305
db2a4165
FM		 2306 uinfo->count = 2;
2307 uinfo->value.integer.min = 0;
d11bb4a9 2308 uinfo->value.integer.max = platform_max;
db2a4165
FM		 2309 return 0;
2310}
2311EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2312
2313/**
2314 * snd_soc_get_volsw_2r - double mixer get callback
2315 * @kcontrol: mixer control
ac11a2b3 2316 * @ucontrol: control element information
db2a4165
FM		 2317 *
2318 * Callback to get the value of a double mixer control that spans 2 registers.
2319 *
2320 * Returns 0 for success.
2321 */
2322int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2323 struct snd_ctl_elem_value *ucontrol)
2324{
4eaa9819
JS		 2325 struct soc_mixer_control *mc =
2326 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2327 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2328 unsigned int reg = mc->reg;
2329 unsigned int reg2 = mc->rreg;
2330 unsigned int shift = mc->shift;
4eaa9819 2331 int max = mc->max;
46f5822f 2332 unsigned int mask = (1 << fls(max)) - 1;
815ecf8d 2333 unsigned int invert = mc->invert;
db2a4165
FM		 2334
2335 ucontrol->value.integer.value[0] =
2336 (snd_soc_read(codec, reg) >> shift) & mask;
2337 ucontrol->value.integer.value[1] =
2338 (snd_soc_read(codec, reg2) >> shift) & mask;
2339 if (invert) {
2340 ucontrol->value.integer.value[0] =
a7a4ac86 2341 max - ucontrol->value.integer.value[0];
db2a4165 2342 ucontrol->value.integer.value[1] =
a7a4ac86 2343 max - ucontrol->value.integer.value[1];
db2a4165
FM		 2344 }
2345
2346 return 0;
2347}
2348EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2349
2350/**
2351 * snd_soc_put_volsw_2r - double mixer set callback
2352 * @kcontrol: mixer control
ac11a2b3 2353 * @ucontrol: control element information
db2a4165
FM		 2354 *
2355 * Callback to set the value of a double mixer control that spans 2 registers.
2356 *
2357 * Returns 0 for success.
2358 */
2359int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2360 struct snd_ctl_elem_value *ucontrol)
2361{
4eaa9819
JS		 2362 struct soc_mixer_control *mc =
2363 (struct soc_mixer_control *)kcontrol->private_value;
db2a4165 2364 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d
JS		 2365 unsigned int reg = mc->reg;
2366 unsigned int reg2 = mc->rreg;
2367 unsigned int shift = mc->shift;
4eaa9819 2368 int max = mc->max;
815ecf8d
JS		 2369 unsigned int mask = (1 << fls(max)) - 1;
2370 unsigned int invert = mc->invert;
db2a4165 2371 int err;
46f5822f 2372 unsigned int val, val2, val_mask;
db2a4165
FM		 2373
2374 val_mask = mask << shift;
2375 val = (ucontrol->value.integer.value[0] & mask);
2376 val2 = (ucontrol->value.integer.value[1] & mask);
2377
2378 if (invert) {
a7a4ac86
PZ		 2379 val = max - val;
2380 val2 = max - val2;
db2a4165
FM		 2381 }
2382
2383 val = val << shift;
2384 val2 = val2 << shift;
2385
6c508c62 2386 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
3ff3f64b 2387 if (err < 0)
db2a4165
FM		 2388 return err;
2389
6c508c62 2390 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
db2a4165
FM		 2391 return err;
2392}
2393EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2394
e13ac2e9
MB		 2395/**
2396 * snd_soc_info_volsw_s8 - signed mixer info callback
2397 * @kcontrol: mixer control
2398 * @uinfo: control element information
2399 *
2400 * Callback to provide information about a signed mixer control.
2401 *
2402 * Returns 0 for success.
2403 */
2404int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2405 struct snd_ctl_elem_info *uinfo)
2406{
4eaa9819
JS		 2407 struct soc_mixer_control *mc =
2408 (struct soc_mixer_control *)kcontrol->private_value;
d11bb4a9 2409 int platform_max;
4eaa9819 2410 int min = mc->min;
e13ac2e9 2411
d11bb4a9
PU		 2412 if (!mc->platform_max)
2413 mc->platform_max = mc->max;
2414 platform_max = mc->platform_max;
2415
e13ac2e9
MB		 2416 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2417 uinfo->count = 2;
2418 uinfo->value.integer.min = 0;
d11bb4a9 2419 uinfo->value.integer.max = platform_max - min;
e13ac2e9
MB		 2420 return 0;
2421}
2422EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2423
2424/**
2425 * snd_soc_get_volsw_s8 - signed mixer get callback
2426 * @kcontrol: mixer control
ac11a2b3 2427 * @ucontrol: control element information
e13ac2e9
MB		 2428 *
2429 * Callback to get the value of a signed mixer control.
2430 *
2431 * Returns 0 for success.
2432 */
2433int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2434 struct snd_ctl_elem_value *ucontrol)
2435{
4eaa9819
JS		 2436 struct soc_mixer_control *mc =
2437 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2438 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2439 unsigned int reg = mc->reg;
4eaa9819 2440 int min = mc->min;
e13ac2e9
MB		 2441 int val = snd_soc_read(codec, reg);
2442
2443 ucontrol->value.integer.value[0] =
2444 ((signed char)(val & 0xff))-min;
2445 ucontrol->value.integer.value[1] =
2446 ((signed char)((val >> 8) & 0xff))-min;
2447 return 0;
2448}
2449EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2450
2451/**
2452 * snd_soc_put_volsw_sgn - signed mixer put callback
2453 * @kcontrol: mixer control
ac11a2b3 2454 * @ucontrol: control element information
e13ac2e9
MB		 2455 *
2456 * Callback to set the value of a signed mixer control.
2457 *
2458 * Returns 0 for success.
2459 */
2460int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2461 struct snd_ctl_elem_value *ucontrol)
2462{
4eaa9819
JS		 2463 struct soc_mixer_control *mc =
2464 (struct soc_mixer_control *)kcontrol->private_value;
e13ac2e9 2465 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
815ecf8d 2466 unsigned int reg = mc->reg;
4eaa9819 2467 int min = mc->min;
46f5822f 2468 unsigned int val;
e13ac2e9
MB		 2469
2470 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2471 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2472
6c508c62 2473 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
e13ac2e9
MB		 2474}
2475EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2476
637d3847
PU		 2477/**
2478 * snd_soc_limit_volume - Set new limit to an existing volume control.
2479 *
2480 * @codec: where to look for the control
2481 * @name: Name of the control
2482 * @max: new maximum limit
2483 *
2484 * Return 0 for success, else error.
2485 */
2486int snd_soc_limit_volume(struct snd_soc_codec *codec,
2487 const char *name, int max)
2488{
f0fba2ad 2489 struct snd_card *card = codec->card->snd_card;
637d3847
PU		 2490 struct snd_kcontrol *kctl;
2491 struct soc_mixer_control *mc;
2492 int found = 0;
2493 int ret = -EINVAL;
2494
2495 /* Sanity check for name and max */
2496 if (unlikely(!name || max <= 0))
2497 return -EINVAL;
2498
2499 list_for_each_entry(kctl, &card->controls, list) {
2500 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2501 found = 1;
2502 break;
2503 }
2504 }
2505 if (found) {
2506 mc = (struct soc_mixer_control *)kctl->private_value;
2507 if (max <= mc->max) {
d11bb4a9 2508 mc->platform_max = max;
637d3847
PU		 2509 ret = 0;
2510 }
2511 }
2512 return ret;
2513}
2514EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2515
b6f4bb38 2516/**
2517 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2518 * mixer info callback
2519 * @kcontrol: mixer control
2520 * @uinfo: control element information
2521 *
2522 * Returns 0 for success.
2523 */
2524int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2525 struct snd_ctl_elem_info *uinfo)
2526{
2527 struct soc_mixer_control *mc =
2528 (struct soc_mixer_control *)kcontrol->private_value;
2529 int max = mc->max;
2530 int min = mc->min;
2531
2532 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2533 uinfo->count = 2;
2534 uinfo->value.integer.min = 0;
2535 uinfo->value.integer.max = max-min;
2536
2537 return 0;
2538}
2539EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2540
2541/**
2542 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2543 * mixer get callback
2544 * @kcontrol: mixer control
2545 * @uinfo: control element information
2546 *
2547 * Returns 0 for success.
2548 */
2549int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2550 struct snd_ctl_elem_value *ucontrol)
2551{
2552 struct soc_mixer_control *mc =
2553 (struct soc_mixer_control *)kcontrol->private_value;
2554 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2555 unsigned int mask = (1<<mc->shift)-1;
2556 int min = mc->min;
2557 int val = snd_soc_read(codec, mc->reg) & mask;
2558 int valr = snd_soc_read(codec, mc->rreg) & mask;
2559
20630c7f
SL		 2560 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2561 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
b6f4bb38 2562 return 0;
2563}
2564EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2565
2566/**
2567 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2568 * mixer put callback
2569 * @kcontrol: mixer control
2570 * @uinfo: control element information
2571 *
2572 * Returns 0 for success.
2573 */
2574int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2575 struct snd_ctl_elem_value *ucontrol)
2576{
2577 struct soc_mixer_control *mc =
2578 (struct soc_mixer_control *)kcontrol->private_value;
2579 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2580 unsigned int mask = (1<<mc->shift)-1;
2581 int min = mc->min;
2582 int ret;
2583 unsigned int val, valr, oval, ovalr;
2584
2585 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2586 val &= mask;
2587 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2588 valr &= mask;
2589
2590 oval = snd_soc_read(codec, mc->reg) & mask;
2591 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2592
2593 ret = 0;
2594 if (oval != val) {
2595 ret = snd_soc_write(codec, mc->reg, val);
2596 if (ret < 0)
f1df5aec 2597 return ret;
b6f4bb38 2598 }
2599 if (ovalr != valr) {
2600 ret = snd_soc_write(codec, mc->rreg, valr);
2601 if (ret < 0)
f1df5aec 2602 return ret;
b6f4bb38 2603 }
2604
2605 return 0;
2606}
2607EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2608
8c6529db
LG		 2609/**
2610 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2611 * @dai: DAI
2612 * @clk_id: DAI specific clock ID
2613 * @freq: new clock frequency in Hz
2614 * @dir: new clock direction - input/output.
2615 *
2616 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2617 */
2618int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2619 unsigned int freq, int dir)
2620{
f0fba2ad
LG		 2621 if (dai->driver && dai->driver->ops->set_sysclk)
2622 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
ec4ee52a
MB		 2623 else if (dai->codec && dai->codec->driver->set_sysclk)
2624 return dai->codec->driver->set_sysclk(dai->codec, clk_id,
2625 freq, dir);
8c6529db
LG		 2626 else
2627 return -EINVAL;
2628}
2629EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2630
ec4ee52a
MB		 2631/**
2632 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2633 * @codec: CODEC
2634 * @clk_id: DAI specific clock ID
2635 * @freq: new clock frequency in Hz
2636 * @dir: new clock direction - input/output.
2637 *
2638 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2639 */
2640int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2641 unsigned int freq, int dir)
2642{
2643 if (codec->driver->set_sysclk)
2644 return codec->driver->set_sysclk(codec, clk_id, freq, dir);
2645 else
2646 return -EINVAL;
2647}
2648EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2649
8c6529db
LG		 2650/**
2651 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2652 * @dai: DAI
ac11a2b3 2653 * @div_id: DAI specific clock divider ID
8c6529db
LG		 2654 * @div: new clock divisor.
2655 *
2656 * Configures the clock dividers. This is used to derive the best DAI bit and
2657 * frame clocks from the system or master clock. It's best to set the DAI bit
2658 * and frame clocks as low as possible to save system power.
2659 */
2660int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2661 int div_id, int div)
2662{
f0fba2ad
LG		 2663 if (dai->driver && dai->driver->ops->set_clkdiv)
2664 return dai->driver->ops->set_clkdiv(dai, div_id, div);
8c6529db
LG		 2665 else
2666 return -EINVAL;
2667}
2668EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2669
2670/**
2671 * snd_soc_dai_set_pll - configure DAI PLL.
2672 * @dai: DAI
2673 * @pll_id: DAI specific PLL ID
85488037 2674 * @source: DAI specific source for the PLL
8c6529db
LG		 2675 * @freq_in: PLL input clock frequency in Hz
2676 * @freq_out: requested PLL output clock frequency in Hz
2677 *
2678 * Configures and enables PLL to generate output clock based on input clock.
2679 */
85488037
MB		 2680int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2681 unsigned int freq_in, unsigned int freq_out)
8c6529db 2682{
f0fba2ad
LG		 2683 if (dai->driver && dai->driver->ops->set_pll)
2684 return dai->driver->ops->set_pll(dai, pll_id, source,
85488037 2685 freq_in, freq_out);
ec4ee52a
MB		 2686 else if (dai->codec && dai->codec->driver->set_pll)
2687 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2688 freq_in, freq_out);
8c6529db
LG		 2689 else
2690 return -EINVAL;
2691}
2692EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2693
ec4ee52a
MB		 2694/*
2695 * snd_soc_codec_set_pll - configure codec PLL.
2696 * @codec: CODEC
2697 * @pll_id: DAI specific PLL ID
2698 * @source: DAI specific source for the PLL
2699 * @freq_in: PLL input clock frequency in Hz
2700 * @freq_out: requested PLL output clock frequency in Hz
2701 *
2702 * Configures and enables PLL to generate output clock based on input clock.
2703 */
2704int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2705 unsigned int freq_in, unsigned int freq_out)
2706{
2707 if (codec->driver->set_pll)
2708 return codec->driver->set_pll(codec, pll_id, source,
2709 freq_in, freq_out);
2710 else
2711 return -EINVAL;
2712}
2713EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2714
8c6529db
LG		 2715/**
2716 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2717 * @dai: DAI
8c6529db
LG		 2718 * @fmt: SND_SOC_DAIFMT_ format value.
2719 *
2720 * Configures the DAI hardware format and clocking.
2721 */
2722int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2723{
f0fba2ad
LG		 2724 if (dai->driver && dai->driver->ops->set_fmt)
2725 return dai->driver->ops->set_fmt(dai, fmt);
8c6529db
LG		 2726 else
2727 return -EINVAL;
2728}
2729EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2730
2731/**
2732 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2733 * @dai: DAI
a5479e38
DR		 2734 * @tx_mask: bitmask representing active TX slots.
2735 * @rx_mask: bitmask representing active RX slots.
8c6529db 2736 * @slots: Number of slots in use.
a5479e38 2737 * @slot_width: Width in bits for each slot.
8c6529db
LG		 2738 *
2739 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2740 * specific.
2741 */
2742int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
a5479e38 2743 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
8c6529db 2744{
f0fba2ad
LG		 2745 if (dai->driver && dai->driver->ops->set_tdm_slot)
2746 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
a5479e38 2747 slots, slot_width);
8c6529db
LG		 2748 else
2749 return -EINVAL;
2750}
2751EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2752
472df3cb
BS		 2753/**
2754 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2755 * @dai: DAI
2756 * @tx_num: how many TX channels
2757 * @tx_slot: pointer to an array which imply the TX slot number channel
2758 * 0~num-1 uses
2759 * @rx_num: how many RX channels
2760 * @rx_slot: pointer to an array which imply the RX slot number channel
2761 * 0~num-1 uses
2762 *
2763 * configure the relationship between channel number and TDM slot number.
2764 */
2765int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2766 unsigned int tx_num, unsigned int *tx_slot,
2767 unsigned int rx_num, unsigned int *rx_slot)
2768{
f0fba2ad
LG		 2769 if (dai->driver && dai->driver->ops->set_channel_map)
2770 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
472df3cb
BS		 2771 rx_num, rx_slot);
2772 else
2773 return -EINVAL;
2774}
2775EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2776
8c6529db
LG		 2777/**
2778 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2779 * @dai: DAI
2780 * @tristate: tristate enable
2781 *
2782 * Tristates the DAI so that others can use it.
2783 */
2784int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2785{
f0fba2ad
LG		 2786 if (dai->driver && dai->driver->ops->set_tristate)
2787 return dai->driver->ops->set_tristate(dai, tristate);
8c6529db
LG		 2788 else
2789 return -EINVAL;
2790}
2791EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2792
2793/**
2794 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2795 * @dai: DAI
2796 * @mute: mute enable
2797 *
2798 * Mutes the DAI DAC.
2799 */
2800int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
2801{
f0fba2ad
LG		 2802 if (dai->driver && dai->driver->ops->digital_mute)
2803 return dai->driver->ops->digital_mute(dai, mute);
8c6529db
LG		 2804 else
2805 return -EINVAL;
2806}
2807EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2808
c5af3a2e
MB		 2809/**
2810 * snd_soc_register_card - Register a card with the ASoC core
2811 *
ac11a2b3 2812 * @card: Card to register
c5af3a2e 2813 *
c5af3a2e 2814 */
70a7ca34 2815int snd_soc_register_card(struct snd_soc_card *card)
c5af3a2e 2816{
f0fba2ad
LG		 2817 int i;
2818
c5af3a2e
MB		 2819 if (!card->name || !card->dev)
2820 return -EINVAL;
2821
ed77cc12
MB		 2822 dev_set_drvdata(card->dev, card);
2823
111c6419
SW		 2824 snd_soc_initialize_card_lists(card);
2825
150dd2f8
VK		 2826 soc_init_card_debugfs(card);
2827
2eea392d
JN		 2828 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
2829 (card->num_links + card->num_aux_devs),
2830 GFP_KERNEL);
f0fba2ad
LG		 2831 if (card->rtd == NULL)
2832 return -ENOMEM;
2eea392d 2833 card->rtd_aux = &card->rtd[card->num_links];
f0fba2ad
LG		 2834
2835 for (i = 0; i < card->num_links; i++)
2836 card->rtd[i].dai_link = &card->dai_link[i];
2837
c5af3a2e
MB		 2838 INIT_LIST_HEAD(&card->list);
2839 card->instantiated = 0;
f0fba2ad 2840 mutex_init(&card->mutex);
c5af3a2e
MB		 2841
2842 mutex_lock(&client_mutex);
2843 list_add(&card->list, &card_list);
435c5e25 2844 snd_soc_instantiate_cards();
c5af3a2e
MB		 2845 mutex_unlock(&client_mutex);
2846
2847 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
2848
2849 return 0;
2850}
70a7ca34 2851EXPORT_SYMBOL_GPL(snd_soc_register_card);
c5af3a2e
MB		 2852
2853/**
2854 * snd_soc_unregister_card - Unregister a card with the ASoC core
2855 *
ac11a2b3 2856 * @card: Card to unregister
c5af3a2e 2857 *
c5af3a2e 2858 */
70a7ca34 2859int snd_soc_unregister_card(struct snd_soc_card *card)
c5af3a2e 2860{
b0e26485
VK		 2861 if (card->instantiated)
2862 soc_cleanup_card_resources(card);
c5af3a2e
MB		 2863 mutex_lock(&client_mutex);
2864 list_del(&card->list);
2865 mutex_unlock(&client_mutex);
c5af3a2e
MB		 2866 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
2867
2868 return 0;
2869}
70a7ca34 2870EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
c5af3a2e 2871
f0fba2ad
LG		 2872/*
2873 * Simplify DAI link configuration by removing ".-1" from device names
2874 * and sanitizing names.
2875 */
0b9a214a 2876static char *fmt_single_name(struct device *dev, int *id)
f0fba2ad
LG		 2877{
2878 char *found, name[NAME_SIZE];
2879 int id1, id2;
2880
2881 if (dev_name(dev) == NULL)
2882 return NULL;
2883
58818a77 2884 strlcpy(name, dev_name(dev), NAME_SIZE);
f0fba2ad
LG		 2885
2886 /* are we a "%s.%d" name (platform and SPI components) */
2887 found = strstr(name, dev->driver->name);
2888 if (found) {
2889 /* get ID */
2890 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2891
2892 /* discard ID from name if ID == -1 */
2893 if (*id == -1)
2894 found[strlen(dev->driver->name)] = '\0';
2895 }
2896
2897 } else {
2898 /* I2C component devices are named "bus-addr" */
2899 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2900 char tmp[NAME_SIZE];
2901
2902 /* create unique ID number from I2C addr and bus */
05899446 2903 *id = ((id1 & 0xffff) << 16) + id2;
f0fba2ad
LG		 2904
2905 /* sanitize component name for DAI link creation */
2906 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
58818a77 2907 strlcpy(name, tmp, NAME_SIZE);
f0fba2ad
LG		 2908 } else
2909 *id = 0;
2910 }
2911
2912 return kstrdup(name, GFP_KERNEL);
2913}
2914
2915/*
2916 * Simplify DAI link naming for single devices with multiple DAIs by removing
2917 * any ".-1" and using the DAI name (instead of device name).
2918 */
2919static inline char *fmt_multiple_name(struct device *dev,
2920 struct snd_soc_dai_driver *dai_drv)
2921{
2922 if (dai_drv->name == NULL) {
2923 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
2924 dev_name(dev));
2925 return NULL;
2926 }
2927
2928 return kstrdup(dai_drv->name, GFP_KERNEL);
2929}
2930
9115171a
MB		 2931/**
2932 * snd_soc_register_dai - Register a DAI with the ASoC core
2933 *
ac11a2b3 2934 * @dai: DAI to register
9115171a 2935 */
f0fba2ad
LG		 2936int snd_soc_register_dai(struct device *dev,
2937 struct snd_soc_dai_driver *dai_drv)
9115171a 2938{
f0fba2ad
LG		 2939 struct snd_soc_dai *dai;
2940
2941 dev_dbg(dev, "dai register %s\n", dev_name(dev));
9115171a 2942
f0fba2ad
LG		 2943 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2944 if (dai == NULL)
a7393623 2945 return -ENOMEM;
9115171a 2946
f0fba2ad
LG		 2947 /* create DAI component name */
2948 dai->name = fmt_single_name(dev, &dai->id);
2949 if (dai->name == NULL) {
2950 kfree(dai);
2951 return -ENOMEM;
2952 }
6335d055 2953
f0fba2ad
LG		 2954 dai->dev = dev;
2955 dai->driver = dai_drv;
2956 if (!dai->driver->ops)
2957 dai->driver->ops = &null_dai_ops;
9115171a
MB		 2958
2959 mutex_lock(&client_mutex);
2960 list_add(&dai->list, &dai_list);
435c5e25 2961 snd_soc_instantiate_cards();
9115171a
MB		 2962 mutex_unlock(&client_mutex);
2963
2964 pr_debug("Registered DAI '%s'\n", dai->name);
2965
2966 return 0;
2967}
2968EXPORT_SYMBOL_GPL(snd_soc_register_dai);
2969
2970/**
2971 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
2972 *
ac11a2b3 2973 * @dai: DAI to unregister
9115171a 2974 */
f0fba2ad 2975void snd_soc_unregister_dai(struct device *dev)
9115171a 2976{
f0fba2ad
LG		 2977 struct snd_soc_dai *dai;
2978
2979 list_for_each_entry(dai, &dai_list, list) {
2980 if (dev == dai->dev)
2981 goto found;
2982 }
2983 return;
2984
2985found:
9115171a
MB		 2986 mutex_lock(&client_mutex);
2987 list_del(&dai->list);
2988 mutex_unlock(&client_mutex);
2989
2990 pr_debug("Unregistered DAI '%s'\n", dai->name);
f0fba2ad
LG		 2991 kfree(dai->name);
2992 kfree(dai);
9115171a
MB		 2993}
2994EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
2995
2996/**
2997 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
2998 *
ac11a2b3
MB		 2999 * @dai: Array of DAIs to register
3000 * @count: Number of DAIs
9115171a 3001 */
f0fba2ad
LG		 3002int snd_soc_register_dais(struct device *dev,
3003 struct snd_soc_dai_driver *dai_drv, size_t count)
9115171a 3004{
f0fba2ad
LG		 3005 struct snd_soc_dai *dai;
3006 int i, ret = 0;
3007
720ffa4c 3008 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
9115171a
MB		 3009
3010 for (i = 0; i < count; i++) {
f0fba2ad
LG		 3011
3012 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
c46e0079
AL		 3013 if (dai == NULL) {
3014 ret = -ENOMEM;
3015 goto err;
3016 }
f0fba2ad
LG		 3017
3018 /* create DAI component name */
3019 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3020 if (dai->name == NULL) {
3021 kfree(dai);
3022 ret = -EINVAL;
9115171a 3023 goto err;
f0fba2ad
LG		 3024 }
3025
3026 dai->dev = dev;
f0fba2ad 3027 dai->driver = &dai_drv[i];
0f9141c9
MB		 3028 if (dai->driver->id)
3029 dai->id = dai->driver->id;
3030 else
3031 dai->id = i;
f0fba2ad
LG		 3032 if (!dai->driver->ops)
3033 dai->driver->ops = &null_dai_ops;
3034
3035 mutex_lock(&client_mutex);
3036 list_add(&dai->list, &dai_list);
3037 mutex_unlock(&client_mutex);
3038
3039 pr_debug("Registered DAI '%s'\n", dai->name);
9115171a
MB		 3040 }
3041
1dcb4f38 3042 mutex_lock(&client_mutex);
f0fba2ad 3043 snd_soc_instantiate_cards();
1dcb4f38 3044 mutex_unlock(&client_mutex);
9115171a
MB		 3045 return 0;
3046
3047err:
3048 for (i--; i >= 0; i--)
f0fba2ad 3049 snd_soc_unregister_dai(dev);
9115171a
MB		 3050
3051 return ret;
3052}
3053EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3054
3055/**
3056 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3057 *
ac11a2b3
MB		 3058 * @dai: Array of DAIs to unregister
3059 * @count: Number of DAIs
9115171a 3060 */
f0fba2ad 3061void snd_soc_unregister_dais(struct device *dev, size_t count)
9115171a
MB		 3062{
3063 int i;
3064
3065 for (i = 0; i < count; i++)
f0fba2ad 3066 snd_soc_unregister_dai(dev);
9115171a
MB		 3067}
3068EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3069
12a48a8c
MB		 3070/**
3071 * snd_soc_register_platform - Register a platform with the ASoC core
3072 *
ac11a2b3 3073 * @platform: platform to register
12a48a8c 3074 */
f0fba2ad
LG		 3075int snd_soc_register_platform(struct device *dev,
3076 struct snd_soc_platform_driver *platform_drv)
12a48a8c 3077{
f0fba2ad
LG		 3078 struct snd_soc_platform *platform;
3079
3080 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3081
3082 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3083 if (platform == NULL)
a7393623 3084 return -ENOMEM;
f0fba2ad
LG		 3085
3086 /* create platform component name */
3087 platform->name = fmt_single_name(dev, &platform->id);
3088 if (platform->name == NULL) {
3089 kfree(platform);
3090 return -ENOMEM;
3091 }
12a48a8c 3092
f0fba2ad
LG		 3093 platform->dev = dev;
3094 platform->driver = platform_drv;
12a48a8c
MB		 3095
3096 mutex_lock(&client_mutex);
3097 list_add(&platform->list, &platform_list);
435c5e25 3098 snd_soc_instantiate_cards();
12a48a8c
MB		 3099 mutex_unlock(&client_mutex);
3100
3101 pr_debug("Registered platform '%s'\n", platform->name);
3102
3103 return 0;
3104}
3105EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3106
3107/**
3108 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3109 *
ac11a2b3 3110 * @platform: platform to unregister
12a48a8c 3111 */
f0fba2ad 3112void snd_soc_unregister_platform(struct device *dev)
12a48a8c 3113{
f0fba2ad
LG		 3114 struct snd_soc_platform *platform;
3115
3116 list_for_each_entry(platform, &platform_list, list) {
3117 if (dev == platform->dev)
3118 goto found;
3119 }
3120 return;
3121
3122found:
12a48a8c
MB		 3123 mutex_lock(&client_mutex);
3124 list_del(&platform->list);
3125 mutex_unlock(&client_mutex);
3126
3127 pr_debug("Unregistered platform '%s'\n", platform->name);
f0fba2ad
LG		 3128 kfree(platform->name);
3129 kfree(platform);
12a48a8c
MB		 3130}
3131EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3132
151ab22c
MB		 3133static u64 codec_format_map[] = {
3134 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3135 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3136 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3137 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3138 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3139 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3140 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3141 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3142 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3143 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3144 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3145 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3146 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3147 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3148 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3149 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3150};
3151
3152/* Fix up the DAI formats for endianness: codecs don't actually see
3153 * the endianness of the data but we're using the CPU format
3154 * definitions which do need to include endianness so we ensure that
3155 * codec DAIs always have both big and little endian variants set.
3156 */
3157static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3158{
3159 int i;
3160
3161 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3162 if (stream->formats & codec_format_map[i])
3163 stream->formats |= codec_format_map[i];
3164}
3165
0d0cf00a
MB		 3166/**
3167 * snd_soc_register_codec - Register a codec with the ASoC core
3168 *
ac11a2b3 3169 * @codec: codec to register
0d0cf00a 3170 */
f0fba2ad 3171int snd_soc_register_codec(struct device *dev,
001ae4c0
MB		 3172 const struct snd_soc_codec_driver *codec_drv,
3173 struct snd_soc_dai_driver *dai_drv,
3174 int num_dai)
0d0cf00a 3175{
3335ddca 3176 size_t reg_size;
f0fba2ad
LG		 3177 struct snd_soc_codec *codec;
3178 int ret, i;
151ab22c 3179
f0fba2ad
LG		 3180 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3181
3182 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3183 if (codec == NULL)
3184 return -ENOMEM;
0d0cf00a 3185
f0fba2ad
LG		 3186 /* create CODEC component name */
3187 codec->name = fmt_single_name(dev, &codec->id);
3188 if (codec->name == NULL) {
3189 kfree(codec);
3190 return -ENOMEM;
3191 }
3192
23bbce34
DP		 3193 if (codec_drv->compress_type)
3194 codec->compress_type = codec_drv->compress_type;
3195 else
3196 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3197
c3acec26
MB		 3198 codec->write = codec_drv->write;
3199 codec->read = codec_drv->read;
1500b7b5
DP		 3200 codec->volatile_register = codec_drv->volatile_register;
3201 codec->readable_register = codec_drv->readable_register;
8020454c 3202 codec->writable_register = codec_drv->writable_register;
ce6120cc
LG		 3203 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3204 codec->dapm.dev = dev;
3205 codec->dapm.codec = codec;
474b62d6 3206 codec->dapm.seq_notifier = codec_drv->seq_notifier;
7a30a3db
DP		 3207 codec->dev = dev;
3208 codec->driver = codec_drv;
3209 codec->num_dai = num_dai;
3210 mutex_init(&codec->mutex);
ce6120cc 3211
f0fba2ad
LG		 3212 /* allocate CODEC register cache */
3213 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3335ddca 3214 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
aea170a0 3215 codec->reg_size = reg_size;
3335ddca
DP		 3216 /* it is necessary to make a copy of the default register cache
3217 * because in the case of using a compression type that requires
3218 * the default register cache to be marked as __devinitconst the
3219 * kernel might have freed the array by the time we initialize
3220 * the cache.
3221 */
2aa86323
DP		 3222 if (codec_drv->reg_cache_default) {
3223 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3224 reg_size, GFP_KERNEL);
3225 if (!codec->reg_def_copy) {
3226 ret = -ENOMEM;
3227 goto fail;
3228 }
f0fba2ad 3229 }
151ab22c
MB		 3230 }
3231
1500b7b5
DP		 3232 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3233 if (!codec->volatile_register)
3234 codec->volatile_register = snd_soc_default_volatile_register;
3235 if (!codec->readable_register)
3236 codec->readable_register = snd_soc_default_readable_register;
8020454c
DP		 3237 if (!codec->writable_register)
3238 codec->writable_register = snd_soc_default_writable_register;
1500b7b5
DP		 3239 }
3240
f0fba2ad
LG		 3241 for (i = 0; i < num_dai; i++) {
3242 fixup_codec_formats(&dai_drv[i].playback);
3243 fixup_codec_formats(&dai_drv[i].capture);
3244 }
3245
26b01ccd
MB		 3246 /* register any DAIs */
3247 if (num_dai) {
3248 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3249 if (ret < 0)
fdf0f54d 3250 goto fail;
26b01ccd 3251 }
f0fba2ad 3252
0d0cf00a
MB		 3253 mutex_lock(&client_mutex);
3254 list_add(&codec->list, &codec_list);
3255 snd_soc_instantiate_cards();
3256 mutex_unlock(&client_mutex);
3257
3258 pr_debug("Registered codec '%s'\n", codec->name);
0d0cf00a 3259 return 0;
f0fba2ad 3260
fdf0f54d 3261fail:
3335ddca
DP		 3262 kfree(codec->reg_def_copy);
3263 codec->reg_def_copy = NULL;
f0fba2ad
LG		 3264 kfree(codec->name);
3265 kfree(codec);
3266 return ret;
0d0cf00a
MB		 3267}
3268EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3269
3270/**
3271 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3272 *
ac11a2b3 3273 * @codec: codec to unregister
0d0cf00a 3274 */
f0fba2ad 3275void snd_soc_unregister_codec(struct device *dev)
0d0cf00a 3276{
f0fba2ad
LG		 3277 struct snd_soc_codec *codec;
3278 int i;
3279
3280 list_for_each_entry(codec, &codec_list, list) {
3281 if (dev == codec->dev)
3282 goto found;
3283 }
3284 return;
3285
3286found:
26b01ccd
MB		 3287 if (codec->num_dai)
3288 for (i = 0; i < codec->num_dai; i++)
3289 snd_soc_unregister_dai(dev);
f0fba2ad 3290
0d0cf00a
MB		 3291 mutex_lock(&client_mutex);
3292 list_del(&codec->list);
3293 mutex_unlock(&client_mutex);
3294
3295 pr_debug("Unregistered codec '%s'\n", codec->name);
f0fba2ad 3296
7a30a3db 3297 snd_soc_cache_exit(codec);
3335ddca 3298 kfree(codec->reg_def_copy);
1aafcd4d 3299 kfree(codec->name);
f0fba2ad 3300 kfree(codec);
0d0cf00a
MB		 3301}
3302EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3303
c9b3a40f 3304static int __init snd_soc_init(void)
db2a4165 3305{
384c89e2 3306#ifdef CONFIG_DEBUG_FS
8a9dab1a
MB		 3307 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3308 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
384c89e2
MB		 3309 printk(KERN_WARNING
3310 "ASoC: Failed to create debugfs directory\n");
8a9dab1a 3311 snd_soc_debugfs_root = NULL;
384c89e2 3312 }
c3c5a19a 3313
8a9dab1a 3314 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
c3c5a19a
MB		 3315 &codec_list_fops))
3316 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3317
8a9dab1a 3318 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
f3208780
MB		 3319 &dai_list_fops))
3320 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
19c7ac27 3321
8a9dab1a 3322 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
19c7ac27
MB		 3323 &platform_list_fops))
3324 pr_warn("ASoC: Failed to create platform list debugfs file\n");
384c89e2
MB		 3325#endif
3326
fb257897
MB		 3327 snd_soc_util_init();
3328
db2a4165
FM		 3329 return platform_driver_register(&soc_driver);
3330}
4abe8e16 3331module_init(snd_soc_init);
db2a4165 3332
7d8c16a6 3333static void __exit snd_soc_exit(void)
db2a4165 3334{
fb257897
MB		 3335 snd_soc_util_exit();
3336
384c89e2 3337#ifdef CONFIG_DEBUG_FS
8a9dab1a 3338 debugfs_remove_recursive(snd_soc_debugfs_root);
384c89e2 3339#endif
3ff3f64b 3340 platform_driver_unregister(&soc_driver);
db2a4165 3341}
db2a4165
FM		 3342module_exit(snd_soc_exit);
3343
3344/* Module information */
d331124d 3345MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
db2a4165
FM		 3346MODULE_DESCRIPTION("ALSA SoC Core");
3347MODULE_LICENSE("GPL");
8b45a209 3348MODULE_ALIAS("platform:soc-audio");
kernel source for telekom puls (alcatel/mediatek)