soc-core.c 94.2 KB
Newer Older
F
Frank Mandarino 已提交
1 2 3 4
/*
 * soc-core.c  --  ALSA SoC Audio Layer
 *
 * Copyright 2005 Wolfson Microelectronics PLC.
5
 * Copyright 2005 Openedhand Ltd.
6 7
 * Copyright (C) 2010 Slimlogic Ltd.
 * Copyright (C) 2010 Texas Instruments Inc.
8
 *
9
 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 11
 *         with code, comments and ideas from :-
 *         Richard Purdie <richard@openedhand.com>
F
Frank Mandarino 已提交
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  TODO:
 *   o Add hw rules to enforce rates, etc.
 *   o More testing with other codecs/machines.
 *   o Add more codecs and platforms to ensure good API coverage.
 *   o Support TDM on PCM and I2S
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/bitops.h>
31
#include <linux/debugfs.h>
F
Frank Mandarino 已提交
32
#include <linux/platform_device.h>
33
#include <linux/slab.h>
34
#include <sound/ac97_codec.h>
F
Frank Mandarino 已提交
35
#include <sound/core.h>
36
#include <sound/jack.h>
F
Frank Mandarino 已提交
37 38 39 40 41
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

42 43 44
#define CREATE_TRACE_POINTS
#include <trace/events/asoc.h>

45 46
#define NAME_SIZE	32

F
Frank Mandarino 已提交
47 48 49
static DEFINE_MUTEX(pcm_mutex);
static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);

50
#ifdef CONFIG_DEBUG_FS
51 52
struct dentry *snd_soc_debugfs_root;
EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
53 54
#endif

M
Mark Brown 已提交
55 56
static DEFINE_MUTEX(client_mutex);
static LIST_HEAD(card_list);
M
Mark Brown 已提交
57
static LIST_HEAD(dai_list);
M
Mark Brown 已提交
58
static LIST_HEAD(platform_list);
M
Mark Brown 已提交
59
static LIST_HEAD(codec_list);
M
Mark Brown 已提交
60 61 62

static int snd_soc_register_card(struct snd_soc_card *card);
static int snd_soc_unregister_card(struct snd_soc_card *card);
63
static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
M
Mark Brown 已提交
64

F
Frank Mandarino 已提交
65 66 67 68 69 70 71 72 73
/*
 * This is a timeout to do a DAPM powerdown after a stream is closed().
 * It can be used to eliminate pops between different playback streams, e.g.
 * between two audio tracks.
 */
static int pmdown_time = 5000;
module_param(pmdown_time, int, 0);
MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");

74 75 76
/* codec register dump */
static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
{
77
	int ret, i, step = 1, count = 0;
78

79
	if (!codec->driver->reg_cache_size)
80 81
		return 0;

82 83
	if (codec->driver->reg_cache_step)
		step = codec->driver->reg_cache_step;
84 85

	count += sprintf(buf, "%s registers\n", codec->name);
86 87
	for (i = 0; i < codec->driver->reg_cache_size; i += step) {
		if (codec->driver->readable_register && !codec->driver->readable_register(i))
88 89 90 91 92 93
			continue;

		count += sprintf(buf + count, "%2x: ", i);
		if (count >= PAGE_SIZE - 1)
			break;

94 95
		if (codec->driver->display_register) {
			count += codec->driver->display_register(codec, buf + count,
96
							 PAGE_SIZE - count, i);
97 98 99 100 101
		} else {
			/* If the read fails it's almost certainly due to
			 * the register being volatile and the device being
			 * powered off.
			 */
102
			ret = snd_soc_read(codec, i);
103 104 105 106 107 108 109 110 111
			if (ret >= 0)
				count += snprintf(buf + count,
						  PAGE_SIZE - count,
						  "%4x", ret);
			else
				count += snprintf(buf + count,
						  PAGE_SIZE - count,
						  "<no data: %d>", ret);
		}
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129

		if (count >= PAGE_SIZE - 1)
			break;

		count += snprintf(buf + count, PAGE_SIZE - count, "\n");
		if (count >= PAGE_SIZE - 1)
			break;
	}

	/* Truncate count; min() would cause a warning */
	if (count >= PAGE_SIZE)
		count = PAGE_SIZE - 1;

	return count;
}
static ssize_t codec_reg_show(struct device *dev,
	struct device_attribute *attr, char *buf)
{
130 131 132 133
	struct snd_soc_pcm_runtime *rtd =
			container_of(dev, struct snd_soc_pcm_runtime, dev);

	return soc_codec_reg_show(rtd->codec, buf);
134 135 136 137
}

static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);

138 139 140
static ssize_t pmdown_time_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
141 142
	struct snd_soc_pcm_runtime *rtd =
			container_of(dev, struct snd_soc_pcm_runtime, dev);
143

144
	return sprintf(buf, "%ld\n", rtd->pmdown_time);
145 146 147 148 149 150
}

static ssize_t pmdown_time_set(struct device *dev,
			       struct device_attribute *attr,
			       const char *buf, size_t count)
{
151 152
	struct snd_soc_pcm_runtime *rtd =
			container_of(dev, struct snd_soc_pcm_runtime, dev);
153
	int ret;
154

155 156 157
	ret = strict_strtol(buf, 10, &rtd->pmdown_time);
	if (ret)
		return ret;
158 159 160 161 162 163

	return count;
}

static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);

164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200
#ifdef CONFIG_DEBUG_FS
static int codec_reg_open_file(struct inode *inode, struct file *file)
{
	file->private_data = inode->i_private;
	return 0;
}

static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
			       size_t count, loff_t *ppos)
{
	ssize_t ret;
	struct snd_soc_codec *codec = file->private_data;
	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
	ret = soc_codec_reg_show(codec, buf);
	if (ret >= 0)
		ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
	kfree(buf);
	return ret;
}

static ssize_t codec_reg_write_file(struct file *file,
		const char __user *user_buf, size_t count, loff_t *ppos)
{
	char buf[32];
	int buf_size;
	char *start = buf;
	unsigned long reg, value;
	int step = 1;
	struct snd_soc_codec *codec = file->private_data;

	buf_size = min(count, (sizeof(buf)-1));
	if (copy_from_user(buf, user_buf, buf_size))
		return -EFAULT;
	buf[buf_size] = 0;

201 202
	if (codec->driver->reg_cache_step)
		step = codec->driver->reg_cache_step;
203 204 205 206

	while (*start == ' ')
		start++;
	reg = simple_strtoul(start, &start, 16);
207
	if ((reg >= codec->driver->reg_cache_size) || (reg % step))
208 209 210 211 212
		return -EINVAL;
	while (*start == ' ')
		start++;
	if (strict_strtoul(start, 16, &value))
		return -EINVAL;
213 214 215 216

	/* Userspace has been fiddling around behind the kernel's back */
	add_taint(TAINT_USER);

217
	snd_soc_write(codec, reg, value);
218 219 220 221 222 223 224
	return buf_size;
}

static const struct file_operations codec_reg_fops = {
	.open = codec_reg_open_file,
	.read = codec_reg_read_file,
	.write = codec_reg_write_file,
225
	.llseek = default_llseek,
226 227 228 229
};

static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
{
230 231 232 233
	struct dentry *debugfs_card_root = codec->card->debugfs_card_root;

	codec->debugfs_codec_root = debugfs_create_dir(codec->name,
						       debugfs_card_root);
234 235 236 237 238 239 240 241 242 243 244 245 246
	if (!codec->debugfs_codec_root) {
		printk(KERN_WARNING
		       "ASoC: Failed to create codec debugfs directory\n");
		return;
	}

	codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
						 codec->debugfs_codec_root,
						 codec, &codec_reg_fops);
	if (!codec->debugfs_reg)
		printk(KERN_WARNING
		       "ASoC: Failed to create codec register debugfs file\n");

L
Liam Girdwood 已提交
247
	codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
248
						 codec->debugfs_codec_root);
L
Liam Girdwood 已提交
249
	if (!codec->dapm.debugfs_dapm)
250 251 252
		printk(KERN_WARNING
		       "Failed to create DAPM debugfs directory\n");

L
Liam Girdwood 已提交
253
	snd_soc_dapm_debugfs_init(&codec->dapm);
254 255 256 257 258 259 260
}

static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
{
	debugfs_remove_recursive(codec->debugfs_codec_root);
}

261 262 263 264
static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
				    size_t count, loff_t *ppos)
{
	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
265
	ssize_t len, ret = 0;
266 267 268 269 270
	struct snd_soc_codec *codec;

	if (!buf)
		return -ENOMEM;

271 272 273 274 275 276 277 278 279 280
	list_for_each_entry(codec, &codec_list, list) {
		len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
			       codec->name);
		if (len >= 0)
			ret += len;
		if (ret > PAGE_SIZE) {
			ret = PAGE_SIZE;
			break;
		}
	}
281 282 283 284 285 286 287 288 289 290 291 292 293 294

	if (ret >= 0)
		ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);

	kfree(buf);

	return ret;
}

static const struct file_operations codec_list_fops = {
	.read = codec_list_read_file,
	.llseek = default_llseek,/* read accesses f_pos */
};

M
Mark Brown 已提交
295 296 297 298
static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
				  size_t count, loff_t *ppos)
{
	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
299
	ssize_t len, ret = 0;
M
Mark Brown 已提交
300 301 302 303 304
	struct snd_soc_dai *dai;

	if (!buf)
		return -ENOMEM;

305 306 307 308 309 310 311 312 313
	list_for_each_entry(dai, &dai_list, list) {
		len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
		if (len >= 0)
			ret += len;
		if (ret > PAGE_SIZE) {
			ret = PAGE_SIZE;
			break;
		}
	}
M
Mark Brown 已提交
314

315
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
M
Mark Brown 已提交
316 317 318 319 320 321 322 323 324 325 326

	kfree(buf);

	return ret;
}

static const struct file_operations dai_list_fops = {
	.read = dai_list_read_file,
	.llseek = default_llseek,/* read accesses f_pos */
};

327 328 329 330 331
static ssize_t platform_list_read_file(struct file *file,
				       char __user *user_buf,
				       size_t count, loff_t *ppos)
{
	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
332
	ssize_t len, ret = 0;
333 334 335 336 337
	struct snd_soc_platform *platform;

	if (!buf)
		return -ENOMEM;

338 339 340 341 342 343 344 345 346 347
	list_for_each_entry(platform, &platform_list, list) {
		len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
			       platform->name);
		if (len >= 0)
			ret += len;
		if (ret > PAGE_SIZE) {
			ret = PAGE_SIZE;
			break;
		}
	}
348

349
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
350 351 352 353 354 355 356 357 358 359 360

	kfree(buf);

	return ret;
}

static const struct file_operations platform_list_fops = {
	.read = platform_list_read_file,
	.llseek = default_llseek,/* read accesses f_pos */
};

361 362 363
static void soc_init_card_debugfs(struct snd_soc_card *card)
{
	card->debugfs_card_root = debugfs_create_dir(card->name,
364
						     snd_soc_debugfs_root);
365
	if (!card->debugfs_card_root) {
366 367
		dev_warn(card->dev,
			 "ASoC: Failed to create codec debugfs directory\n");
368 369 370 371 372 373 374 375 376
		return;
	}

	card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
						    card->debugfs_card_root,
						    &card->pop_time);
	if (!card->debugfs_pop_time)
		dev_warn(card->dev,
		       "Failed to create pop time debugfs file\n");
377 378 379 380 381 382 383
}

static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
{
	debugfs_remove_recursive(card->debugfs_card_root);
}

384 385 386 387 388 389 390 391 392
#else

static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
{
}

static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
{
}
393 394 395 396 397 398 399 400

static inline void soc_init_card_debugfs(struct snd_soc_card *card)
{
}

static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
{
}
401 402
#endif

F
Frank Mandarino 已提交
403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
#ifdef CONFIG_SND_SOC_AC97_BUS
/* unregister ac97 codec */
static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
{
	if (codec->ac97->dev.bus)
		device_unregister(&codec->ac97->dev);
	return 0;
}

/* stop no dev release warning */
static void soc_ac97_device_release(struct device *dev){}

/* register ac97 codec to bus */
static int soc_ac97_dev_register(struct snd_soc_codec *codec)
{
	int err;

	codec->ac97->dev.bus = &ac97_bus_type;
421
	codec->ac97->dev.parent = codec->card->dev;
F
Frank Mandarino 已提交
422 423
	codec->ac97->dev.release = soc_ac97_device_release;

424
	dev_set_name(&codec->ac97->dev, "%d-%d:%s",
425
		     codec->card->snd_card->number, 0, codec->name);
F
Frank Mandarino 已提交
426 427 428 429 430 431 432 433 434 435
	err = device_register(&codec->ac97->dev);
	if (err < 0) {
		snd_printk(KERN_ERR "Can't register ac97 bus\n");
		codec->ac97->dev.bus = NULL;
		return err;
	}
	return 0;
}
#endif

436 437 438
static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
439 440
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
441 442
	int ret;

443 444 445 446
	if (codec_dai->driver->symmetric_rates || cpu_dai->driver->symmetric_rates ||
			rtd->dai_link->symmetric_rates) {
		dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n",
				rtd->rate);
447 448 449

		ret = snd_pcm_hw_constraint_minmax(substream->runtime,
						   SNDRV_PCM_HW_PARAM_RATE,
450 451
						   rtd->rate,
						   rtd->rate);
452
		if (ret < 0) {
453
			dev_err(&rtd->dev,
454 455 456 457 458 459 460 461
				"Unable to apply rate symmetry constraint: %d\n", ret);
			return ret;
		}
	}

	return 0;
}

F
Frank Mandarino 已提交
462 463 464 465 466 467 468 469 470
/*
 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
 * then initialized and any private data can be allocated. This also calls
 * startup for the cpu DAI, platform, machine and codec DAI.
 */
static int soc_pcm_open(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_pcm_runtime *runtime = substream->runtime;
471 472 473 474 475
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
	struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
F
Frank Mandarino 已提交
476 477 478 479 480
	int ret = 0;

	mutex_lock(&pcm_mutex);

	/* startup the audio subsystem */
481 482
	if (cpu_dai->driver->ops->startup) {
		ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
F
Frank Mandarino 已提交
483 484
		if (ret < 0) {
			printk(KERN_ERR "asoc: can't open interface %s\n",
485
				cpu_dai->name);
F
Frank Mandarino 已提交
486 487 488 489
			goto out;
		}
	}

490 491
	if (platform->driver->ops->open) {
		ret = platform->driver->ops->open(substream);
F
Frank Mandarino 已提交
492 493 494 495 496 497
		if (ret < 0) {
			printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
			goto platform_err;
		}
	}

498 499
	if (codec_dai->driver->ops->startup) {
		ret = codec_dai->driver->ops->startup(substream, codec_dai);
F
Frank Mandarino 已提交
500
		if (ret < 0) {
501 502 503
			printk(KERN_ERR "asoc: can't open codec %s\n",
				codec_dai->name);
			goto codec_dai_err;
F
Frank Mandarino 已提交
504 505 506
		}
	}

507 508
	if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
		ret = rtd->dai_link->ops->startup(substream);
F
Frank Mandarino 已提交
509
		if (ret < 0) {
510
			printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
511
			goto machine_err;
F
Frank Mandarino 已提交
512 513 514
		}
	}

M
Mark Brown 已提交
515
	/* Check that the codec and cpu DAIs are compatible */
F
Frank Mandarino 已提交
516 517
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		runtime->hw.rate_min =
518 519
			max(codec_dai_drv->playback.rate_min,
			    cpu_dai_drv->playback.rate_min);
F
Frank Mandarino 已提交
520
		runtime->hw.rate_max =
521 522
			min(codec_dai_drv->playback.rate_max,
			    cpu_dai_drv->playback.rate_max);
F
Frank Mandarino 已提交
523
		runtime->hw.channels_min =
524 525
			max(codec_dai_drv->playback.channels_min,
				cpu_dai_drv->playback.channels_min);
F
Frank Mandarino 已提交
526
		runtime->hw.channels_max =
527 528
			min(codec_dai_drv->playback.channels_max,
				cpu_dai_drv->playback.channels_max);
529
		runtime->hw.formats =
530
			codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
531
		runtime->hw.rates =
532 533
			codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
		if (codec_dai_drv->playback.rates
534
			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
535 536
			runtime->hw.rates |= cpu_dai_drv->playback.rates;
		if (cpu_dai_drv->playback.rates
537
			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
538
			runtime->hw.rates |= codec_dai_drv->playback.rates;
F
Frank Mandarino 已提交
539 540
	} else {
		runtime->hw.rate_min =
541 542
			max(codec_dai_drv->capture.rate_min,
			    cpu_dai_drv->capture.rate_min);
F
Frank Mandarino 已提交
543
		runtime->hw.rate_max =
544 545
			min(codec_dai_drv->capture.rate_max,
			    cpu_dai_drv->capture.rate_max);
F
Frank Mandarino 已提交
546
		runtime->hw.channels_min =
547 548
			max(codec_dai_drv->capture.channels_min,
				cpu_dai_drv->capture.channels_min);
F
Frank Mandarino 已提交
549
		runtime->hw.channels_max =
550 551
			min(codec_dai_drv->capture.channels_max,
				cpu_dai_drv->capture.channels_max);
552
		runtime->hw.formats =
553
			codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
554
		runtime->hw.rates =
555 556
			codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
		if (codec_dai_drv->capture.rates
557
			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
558 559
			runtime->hw.rates |= cpu_dai_drv->capture.rates;
		if (cpu_dai_drv->capture.rates
560
			   & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
561
			runtime->hw.rates |= codec_dai_drv->capture.rates;
F
Frank Mandarino 已提交
562 563 564 565 566
	}

	snd_pcm_limit_hw_rates(runtime);
	if (!runtime->hw.rates) {
		printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
567
			codec_dai->name, cpu_dai->name);
568
		goto config_err;
F
Frank Mandarino 已提交
569 570 571
	}
	if (!runtime->hw.formats) {
		printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
572
			codec_dai->name, cpu_dai->name);
573
		goto config_err;
F
Frank Mandarino 已提交
574 575 576
	}
	if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
		printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
577
				codec_dai->name, cpu_dai->name);
578
		goto config_err;
F
Frank Mandarino 已提交
579 580
	}

581 582 583 584
	/* Symmetry only applies if we've already got an active stream. */
	if (cpu_dai->active || codec_dai->active) {
		ret = soc_pcm_apply_symmetry(substream);
		if (ret != 0)
585
			goto config_err;
586 587
	}

588 589
	pr_debug("asoc: %s <-> %s info:\n",
			codec_dai->name, cpu_dai->name);
590 591 592 593 594
	pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
	pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
		 runtime->hw.channels_max);
	pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
		 runtime->hw.rate_max);
F
Frank Mandarino 已提交
595

596
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
597 598
		cpu_dai->playback_active++;
		codec_dai->playback_active++;
599
	} else {
600 601
		cpu_dai->capture_active++;
		codec_dai->capture_active++;
602 603 604
	}
	cpu_dai->active++;
	codec_dai->active++;
605
	rtd->codec->active++;
F
Frank Mandarino 已提交
606 607 608
	mutex_unlock(&pcm_mutex);
	return 0;

609
config_err:
610 611
	if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
		rtd->dai_link->ops->shutdown(substream);
F
Frank Mandarino 已提交
612

613
machine_err:
614 615
	if (codec_dai->driver->ops->shutdown)
		codec_dai->driver->ops->shutdown(substream, codec_dai);
616

617
codec_dai_err:
618 619
	if (platform->driver->ops->close)
		platform->driver->ops->close(substream);
F
Frank Mandarino 已提交
620 621

platform_err:
622 623
	if (cpu_dai->driver->ops->shutdown)
		cpu_dai->driver->ops->shutdown(substream, cpu_dai);
F
Frank Mandarino 已提交
624 625 626 627 628 629
out:
	mutex_unlock(&pcm_mutex);
	return ret;
}

/*
630
 * Power down the audio subsystem pmdown_time msecs after close is called.
F
Frank Mandarino 已提交
631 632 633
 * This is to ensure there are no pops or clicks in between any music tracks
 * due to DAPM power cycling.
 */
634
static void close_delayed_work(struct work_struct *work)
F
Frank Mandarino 已提交
635
{
636 637 638
	struct snd_soc_pcm_runtime *rtd =
			container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
F
Frank Mandarino 已提交
639 640

	mutex_lock(&pcm_mutex);
641 642 643 644 645 646 647 648 649 650 651 652

	pr_debug("pop wq checking: %s status: %s waiting: %s\n",
		 codec_dai->driver->playback.stream_name,
		 codec_dai->playback_active ? "active" : "inactive",
		 codec_dai->pop_wait ? "yes" : "no");

	/* are we waiting on this codec DAI stream */
	if (codec_dai->pop_wait == 1) {
		codec_dai->pop_wait = 0;
		snd_soc_dapm_stream_event(rtd,
			codec_dai->driver->playback.stream_name,
			SND_SOC_DAPM_STREAM_STOP);
F
Frank Mandarino 已提交
653
	}
654

F
Frank Mandarino 已提交
655 656 657 658 659 660 661 662 663 664 665
	mutex_unlock(&pcm_mutex);
}

/*
 * Called by ALSA when a PCM substream is closed. Private data can be
 * freed here. The cpu DAI, codec DAI, machine and platform are also
 * shutdown.
 */
static int soc_codec_close(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
666 667 668 669
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = rtd->codec;
F
Frank Mandarino 已提交
670 671 672

	mutex_lock(&pcm_mutex);

673
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
674 675
		cpu_dai->playback_active--;
		codec_dai->playback_active--;
676
	} else {
677 678
		cpu_dai->capture_active--;
		codec_dai->capture_active--;
F
Frank Mandarino 已提交
679
	}
680 681 682

	cpu_dai->active--;
	codec_dai->active--;
F
Frank Mandarino 已提交
683 684
	codec->active--;

685 686 687 688 689 690
	/* Muting the DAC suppresses artifacts caused during digital
	 * shutdown, for example from stopping clocks.
	 */
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		snd_soc_dai_digital_mute(codec_dai, 1);

691 692
	if (cpu_dai->driver->ops->shutdown)
		cpu_dai->driver->ops->shutdown(substream, cpu_dai);
F
Frank Mandarino 已提交
693

694 695
	if (codec_dai->driver->ops->shutdown)
		codec_dai->driver->ops->shutdown(substream, codec_dai);
F
Frank Mandarino 已提交
696

697 698
	if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
		rtd->dai_link->ops->shutdown(substream);
F
Frank Mandarino 已提交
699

700 701 702
	if (platform->driver->ops->close)
		platform->driver->ops->close(substream);
	cpu_dai->runtime = NULL;
F
Frank Mandarino 已提交
703 704 705

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		/* start delayed pop wq here for playback streams */
706
		codec_dai->pop_wait = 1;
707 708
		schedule_delayed_work(&rtd->delayed_work,
			msecs_to_jiffies(rtd->pmdown_time));
F
Frank Mandarino 已提交
709 710
	} else {
		/* capture streams can be powered down now */
711 712
		snd_soc_dapm_stream_event(rtd,
			codec_dai->driver->capture.stream_name,
713
			SND_SOC_DAPM_STREAM_STOP);
F
Frank Mandarino 已提交
714 715 716 717 718 719 720 721 722 723 724 725 726 727
	}

	mutex_unlock(&pcm_mutex);
	return 0;
}

/*
 * Called by ALSA when the PCM substream is prepared, can set format, sample
 * rate, etc.  This function is non atomic and can be called multiple times,
 * it can refer to the runtime info.
 */
static int soc_pcm_prepare(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
728 729 730
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
F
Frank Mandarino 已提交
731 732 733
	int ret = 0;

	mutex_lock(&pcm_mutex);
734

735 736
	if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
		ret = rtd->dai_link->ops->prepare(substream);
737 738 739 740 741 742
		if (ret < 0) {
			printk(KERN_ERR "asoc: machine prepare error\n");
			goto out;
		}
	}

743 744
	if (platform->driver->ops->prepare) {
		ret = platform->driver->ops->prepare(substream);
745 746
		if (ret < 0) {
			printk(KERN_ERR "asoc: platform prepare error\n");
F
Frank Mandarino 已提交
747
			goto out;
748
		}
F
Frank Mandarino 已提交
749 750
	}

751 752
	if (codec_dai->driver->ops->prepare) {
		ret = codec_dai->driver->ops->prepare(substream, codec_dai);
753 754
		if (ret < 0) {
			printk(KERN_ERR "asoc: codec DAI prepare error\n");
F
Frank Mandarino 已提交
755
			goto out;
756
		}
F
Frank Mandarino 已提交
757 758
	}

759 760
	if (cpu_dai->driver->ops->prepare) {
		ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
761 762 763 764 765
		if (ret < 0) {
			printk(KERN_ERR "asoc: cpu DAI prepare error\n");
			goto out;
		}
	}
F
Frank Mandarino 已提交
766

767 768 769 770
	/* cancel any delayed stream shutdown that is pending */
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
	    codec_dai->pop_wait) {
		codec_dai->pop_wait = 0;
771
		cancel_delayed_work(&rtd->delayed_work);
772
	}
F
Frank Mandarino 已提交
773

774
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
775 776
		snd_soc_dapm_stream_event(rtd,
					  codec_dai->driver->playback.stream_name,
777 778
					  SND_SOC_DAPM_STREAM_START);
	else
779 780
		snd_soc_dapm_stream_event(rtd,
					  codec_dai->driver->capture.stream_name,
781
					  SND_SOC_DAPM_STREAM_START);
782

783
	snd_soc_dai_digital_mute(codec_dai, 0);
F
Frank Mandarino 已提交
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798

out:
	mutex_unlock(&pcm_mutex);
	return ret;
}

/*
 * Called by ALSA when the hardware params are set by application. This
 * function can also be called multiple times and can allocate buffers
 * (using snd_pcm_lib_* ). It's non-atomic.
 */
static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
799 800 801
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
F
Frank Mandarino 已提交
802 803 804 805
	int ret = 0;

	mutex_lock(&pcm_mutex);

806 807
	if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
		ret = rtd->dai_link->ops->hw_params(substream, params);
808 809
		if (ret < 0) {
			printk(KERN_ERR "asoc: machine hw_params failed\n");
F
Frank Mandarino 已提交
810
			goto out;
811
		}
F
Frank Mandarino 已提交
812 813
	}

814 815
	if (codec_dai->driver->ops->hw_params) {
		ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
F
Frank Mandarino 已提交
816 817
		if (ret < 0) {
			printk(KERN_ERR "asoc: can't set codec %s hw params\n",
818 819
				codec_dai->name);
			goto codec_err;
F
Frank Mandarino 已提交
820 821 822
		}
	}

823 824
	if (cpu_dai->driver->ops->hw_params) {
		ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
F
Frank Mandarino 已提交
825
		if (ret < 0) {
826
			printk(KERN_ERR "asoc: interface %s hw params failed\n",
827
				cpu_dai->name);
F
Frank Mandarino 已提交
828 829 830 831
			goto interface_err;
		}
	}

832 833
	if (platform->driver->ops->hw_params) {
		ret = platform->driver->ops->hw_params(substream, params);
F
Frank Mandarino 已提交
834
		if (ret < 0) {
835
			printk(KERN_ERR "asoc: platform %s hw params failed\n",
F
Frank Mandarino 已提交
836 837 838 839 840
				platform->name);
			goto platform_err;
		}
	}

841
	rtd->rate = params_rate(params);
842

F
Frank Mandarino 已提交
843 844 845 846 847
out:
	mutex_unlock(&pcm_mutex);
	return ret;

platform_err:
848 849
	if (cpu_dai->driver->ops->hw_free)
		cpu_dai->driver->ops->hw_free(substream, cpu_dai);
F
Frank Mandarino 已提交
850 851

interface_err:
852 853
	if (codec_dai->driver->ops->hw_free)
		codec_dai->driver->ops->hw_free(substream, codec_dai);
854 855

codec_err:
856 857
	if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
		rtd->dai_link->ops->hw_free(substream);
F
Frank Mandarino 已提交
858 859 860 861 862 863

	mutex_unlock(&pcm_mutex);
	return ret;
}

/*
M
Mark Brown 已提交
864
 * Frees resources allocated by hw_params, can be called multiple times
F
Frank Mandarino 已提交
865 866 867 868
 */
static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
869 870 871 872
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = rtd->codec;
F
Frank Mandarino 已提交
873 874 875 876

	mutex_lock(&pcm_mutex);

	/* apply codec digital mute */
877 878
	if (!codec->active)
		snd_soc_dai_digital_mute(codec_dai, 1);
F
Frank Mandarino 已提交
879 880

	/* free any machine hw params */
881 882
	if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
		rtd->dai_link->ops->hw_free(substream);
F
Frank Mandarino 已提交
883 884

	/* free any DMA resources */
885 886
	if (platform->driver->ops->hw_free)
		platform->driver->ops->hw_free(substream);
F
Frank Mandarino 已提交
887

M
Mark Brown 已提交
888
	/* now free hw params for the DAIs  */
889 890
	if (codec_dai->driver->ops->hw_free)
		codec_dai->driver->ops->hw_free(substream, codec_dai);
F
Frank Mandarino 已提交
891

892 893
	if (cpu_dai->driver->ops->hw_free)
		cpu_dai->driver->ops->hw_free(substream, cpu_dai);
F
Frank Mandarino 已提交
894 895 896 897 898 899 900 901

	mutex_unlock(&pcm_mutex);
	return 0;
}

static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
902 903 904
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
F
Frank Mandarino 已提交
905 906
	int ret;

907 908
	if (codec_dai->driver->ops->trigger) {
		ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
F
Frank Mandarino 已提交
909 910 911 912
		if (ret < 0)
			return ret;
	}

913 914
	if (platform->driver->ops->trigger) {
		ret = platform->driver->ops->trigger(substream, cmd);
F
Frank Mandarino 已提交
915 916 917 918
		if (ret < 0)
			return ret;
	}

919 920
	if (cpu_dai->driver->ops->trigger) {
		ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
F
Frank Mandarino 已提交
921 922 923 924 925 926
		if (ret < 0)
			return ret;
	}
	return 0;
}

927 928
/*
 * soc level wrapper for pointer callback
929 930
 * If cpu_dai, codec_dai, platform driver has the delay callback, than
 * the runtime->delay will be updated accordingly.
931 932 933 934
 */
static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
935 936 937
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
938
	struct snd_pcm_runtime *runtime = substream->runtime;
939
	snd_pcm_uframes_t offset = 0;
940
	snd_pcm_sframes_t delay = 0;
941

942 943
	if (platform->driver->ops->pointer)
		offset = platform->driver->ops->pointer(substream);
944

945 946
	if (cpu_dai->driver->ops->delay)
		delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
947

948 949
	if (codec_dai->driver->ops->delay)
		delay += codec_dai->driver->ops->delay(substream, codec_dai);
950

951 952
	if (platform->driver->delay)
		delay += platform->driver->delay(substream, codec_dai);
953 954 955

	runtime->delay = delay;

956 957 958
	return offset;
}

F
Frank Mandarino 已提交
959 960 961 962 963 964 965 966
/* ASoC PCM operations */
static struct snd_pcm_ops soc_pcm_ops = {
	.open		= soc_pcm_open,
	.close		= soc_codec_close,
	.hw_params	= soc_pcm_hw_params,
	.hw_free	= soc_pcm_hw_free,
	.prepare	= soc_pcm_prepare,
	.trigger	= soc_pcm_trigger,
967
	.pointer	= soc_pcm_pointer,
F
Frank Mandarino 已提交
968 969 970 971
};

#ifdef CONFIG_PM
/* powers down audio subsystem for suspend */
M
Mark Brown 已提交
972
static int soc_suspend(struct device *dev)
F
Frank Mandarino 已提交
973
{
M
Mark Brown 已提交
974
	struct platform_device *pdev = to_platform_device(dev);
975
	struct snd_soc_card *card = platform_get_drvdata(pdev);
976
	struct snd_soc_codec *codec;
F
Frank Mandarino 已提交
977 978
	int i;

979 980 981
	/* If the initialization of this soc device failed, there is no codec
	 * associated with it. Just bail out in this case.
	 */
982
	if (list_empty(&card->codec_dev_list))
983 984
		return 0;

985 986 987
	/* Due to the resume being scheduled into a workqueue we could
	* suspend before that's finished - wait for it to complete.
	 */
988 989 990
	snd_power_lock(card->snd_card);
	snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
	snd_power_unlock(card->snd_card);
991 992

	/* we're going to block userspace touching us until resume completes */
993
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
994

M
Mark Brown 已提交
995
	/* mute any active DACs */
996 997 998
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *dai = card->rtd[i].codec_dai;
		struct snd_soc_dai_driver *drv = dai->driver;
999

1000
		if (card->rtd[i].dai_link->ignore_suspend)
1001 1002
			continue;

1003 1004
		if (drv->ops->digital_mute && dai->playback_active)
			drv->ops->digital_mute(dai, 1);
F
Frank Mandarino 已提交
1005 1006
	}

1007
	/* suspend all pcms */
1008 1009
	for (i = 0; i < card->num_rtd; i++) {
		if (card->rtd[i].dai_link->ignore_suspend)
1010 1011
			continue;

1012
		snd_pcm_suspend_all(card->rtd[i].pcm);
1013
	}
1014

1015
	if (card->suspend_pre)
M
Mark Brown 已提交
1016
		card->suspend_pre(pdev, PMSG_SUSPEND);
F
Frank Mandarino 已提交
1017

1018 1019 1020
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
		struct snd_soc_platform *platform = card->rtd[i].platform;
1021

1022
		if (card->rtd[i].dai_link->ignore_suspend)
1023 1024
			continue;

1025 1026 1027 1028 1029 1030
		if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
			cpu_dai->driver->suspend(cpu_dai);
		if (platform->driver->suspend && !platform->suspended) {
			platform->driver->suspend(cpu_dai);
			platform->suspended = 1;
		}
F
Frank Mandarino 已提交
1031 1032 1033
	}

	/* close any waiting streams and save state */
1034
	for (i = 0; i < card->num_rtd; i++) {
1035
		flush_delayed_work_sync(&card->rtd[i].delayed_work);
L
Liam Girdwood 已提交
1036
		card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
1037
	}
F
Frank Mandarino 已提交
1038

1039 1040
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1041

1042
		if (card->rtd[i].dai_link->ignore_suspend)
1043 1044
			continue;

1045 1046
		if (driver->playback.stream_name != NULL)
			snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
F
Frank Mandarino 已提交
1047
				SND_SOC_DAPM_STREAM_SUSPEND);
1048 1049 1050

		if (driver->capture.stream_name != NULL)
			snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
F
Frank Mandarino 已提交
1051 1052 1053
				SND_SOC_DAPM_STREAM_SUSPEND);
	}

1054
	/* suspend all CODECs */
1055
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1056 1057 1058
		/* If there are paths active then the CODEC will be held with
		 * bias _ON and should not be suspended. */
		if (!codec->suspended && codec->driver->suspend) {
L
Liam Girdwood 已提交
1059
			switch (codec->dapm.bias_level) {
1060 1061 1062 1063 1064 1065 1066 1067 1068
			case SND_SOC_BIAS_STANDBY:
			case SND_SOC_BIAS_OFF:
				codec->driver->suspend(codec, PMSG_SUSPEND);
				codec->suspended = 1;
				break;
			default:
				dev_dbg(codec->dev, "CODEC is on over suspend\n");
				break;
			}
1069 1070
		}
	}
F
Frank Mandarino 已提交
1071

1072 1073
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1074

1075
		if (card->rtd[i].dai_link->ignore_suspend)
1076 1077
			continue;

1078 1079
		if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
			cpu_dai->driver->suspend(cpu_dai);
F
Frank Mandarino 已提交
1080 1081
	}

1082
	if (card->suspend_post)
M
Mark Brown 已提交
1083
		card->suspend_post(pdev, PMSG_SUSPEND);
F
Frank Mandarino 已提交
1084 1085 1086 1087

	return 0;
}

1088 1089 1090 1091
/* deferred resume work, so resume can complete before we finished
 * setting our codec back up, which can be very slow on I2C
 */
static void soc_resume_deferred(struct work_struct *work)
F
Frank Mandarino 已提交
1092
{
1093 1094 1095
	struct snd_soc_card *card =
			container_of(work, struct snd_soc_card, deferred_resume_work);
	struct platform_device *pdev = to_platform_device(card->dev);
1096
	struct snd_soc_codec *codec;
F
Frank Mandarino 已提交
1097 1098
	int i;

1099 1100 1101 1102
	/* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
	 * so userspace apps are blocked from touching us
	 */

1103
	dev_dbg(card->dev, "starting resume work\n");
1104

1105
	/* Bring us up into D2 so that DAPM starts enabling things */
1106
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
1107

1108 1109
	if (card->resume_pre)
		card->resume_pre(pdev);
F
Frank Mandarino 已提交
1110

1111 1112 1113
	/* resume AC97 DAIs */
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
1114

1115
		if (card->rtd[i].dai_link->ignore_suspend)
1116 1117
			continue;

1118 1119 1120 1121
		if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
			cpu_dai->driver->resume(cpu_dai);
	}

1122
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
1123 1124 1125 1126 1127
		/* If the CODEC was idle over suspend then it will have been
		 * left with bias OFF or STANDBY and suspended so we must now
		 * resume.  Otherwise the suspend was suppressed.
		 */
		if (codec->driver->resume && codec->suspended) {
L
Liam Girdwood 已提交
1128
			switch (codec->dapm.bias_level) {
1129 1130 1131 1132 1133 1134 1135 1136 1137
			case SND_SOC_BIAS_STANDBY:
			case SND_SOC_BIAS_OFF:
				codec->driver->resume(codec);
				codec->suspended = 0;
				break;
			default:
				dev_dbg(codec->dev, "CODEC was on over suspend\n");
				break;
			}
1138 1139
		}
	}
F
Frank Mandarino 已提交
1140

1141 1142
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
1143

1144
		if (card->rtd[i].dai_link->ignore_suspend)
1145 1146
			continue;

1147 1148
		if (driver->playback.stream_name != NULL)
			snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
F
Frank Mandarino 已提交
1149
				SND_SOC_DAPM_STREAM_RESUME);
1150 1151 1152

		if (driver->capture.stream_name != NULL)
			snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
F
Frank Mandarino 已提交
1153 1154 1155
				SND_SOC_DAPM_STREAM_RESUME);
	}

1156
	/* unmute any active DACs */
1157 1158 1159
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *dai = card->rtd[i].codec_dai;
		struct snd_soc_dai_driver *drv = dai->driver;
1160

1161
		if (card->rtd[i].dai_link->ignore_suspend)
1162 1163
			continue;

1164 1165
		if (drv->ops->digital_mute && dai->playback_active)
			drv->ops->digital_mute(dai, 0);
F
Frank Mandarino 已提交
1166 1167
	}

1168 1169 1170
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
		struct snd_soc_platform *platform = card->rtd[i].platform;
1171

1172
		if (card->rtd[i].dai_link->ignore_suspend)
1173 1174
			continue;

1175 1176 1177 1178 1179 1180
		if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
			cpu_dai->driver->resume(cpu_dai);
		if (platform->driver->resume && platform->suspended) {
			platform->driver->resume(cpu_dai);
			platform->suspended = 0;
		}
F
Frank Mandarino 已提交
1181 1182
	}

1183 1184
	if (card->resume_post)
		card->resume_post(pdev);
F
Frank Mandarino 已提交
1185

1186
	dev_dbg(card->dev, "resume work completed\n");
1187 1188

	/* userspace can access us now we are back as we were before */
1189
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
1190 1191 1192
}

/* powers up audio subsystem after a suspend */
M
Mark Brown 已提交
1193
static int soc_resume(struct device *dev)
1194
{
M
Mark Brown 已提交
1195
	struct platform_device *pdev = to_platform_device(dev);
1196 1197
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	int i;
1198

1199 1200 1201 1202 1203
	/* AC97 devices might have other drivers hanging off them so
	 * need to resume immediately.  Other drivers don't have that
	 * problem and may take a substantial amount of time to resume
	 * due to I/O costs and anti-pop so handle them out of line.
	 */
1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
		if (cpu_dai->driver->ac97_control) {
			dev_dbg(dev, "Resuming AC97 immediately\n");
			soc_resume_deferred(&card->deferred_resume_work);
		} else {
			dev_dbg(dev, "Scheduling resume work\n");
			if (!schedule_work(&card->deferred_resume_work))
				dev_err(dev, "resume work item may be lost\n");
		}
1214
	}
1215

F
Frank Mandarino 已提交
1216 1217 1218 1219 1220 1221 1222
	return 0;
}
#else
#define soc_suspend	NULL
#define soc_resume	NULL
#endif

1223 1224 1225
static struct snd_soc_dai_ops null_dai_ops = {
};

1226
static int soc_bind_dai_link(struct snd_soc_card *card, int num)
F
Frank Mandarino 已提交
1227
{
1228 1229
	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
M
Mark Brown 已提交
1230
	struct snd_soc_codec *codec;
1231
	struct snd_soc_platform *platform;
1232
	struct snd_soc_dai *codec_dai, *cpu_dai;
1233

1234 1235 1236
	if (rtd->complete)
		return 1;
	dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
1237

1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
	/* do we already have the CPU DAI for this link ? */
	if (rtd->cpu_dai) {
		goto find_codec;
	}
	/* no, then find CPU DAI from registered DAIs*/
	list_for_each_entry(cpu_dai, &dai_list, list) {
		if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {

			if (!try_module_get(cpu_dai->dev->driver->owner))
				return -ENODEV;

			rtd->cpu_dai = cpu_dai;
			goto find_codec;
1251 1252
		}
	}
1253 1254
	dev_dbg(card->dev, "CPU DAI %s not registered\n",
			dai_link->cpu_dai_name);
1255

1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
find_codec:
	/* do we already have the CODEC for this link ? */
	if (rtd->codec) {
		goto find_platform;
	}

	/* no, then find CODEC from registered CODECs*/
	list_for_each_entry(codec, &codec_list, list) {
		if (!strcmp(codec->name, dai_link->codec_name)) {
			rtd->codec = codec;

			/* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
			list_for_each_entry(codec_dai, &dai_list, list) {
				if (codec->dev == codec_dai->dev &&
						!strcmp(codec_dai->name, dai_link->codec_dai_name)) {
					rtd->codec_dai = codec_dai;
					goto find_platform;
				}
1274
			}
1275 1276 1277 1278
			dev_dbg(card->dev, "CODEC DAI %s not registered\n",
					dai_link->codec_dai_name);

			goto find_platform;
1279
		}
1280 1281 1282
	}
	dev_dbg(card->dev, "CODEC %s not registered\n",
			dai_link->codec_name);
1283

1284 1285 1286 1287
find_platform:
	/* do we already have the CODEC DAI for this link ? */
	if (rtd->platform) {
		goto out;
M
Mark Brown 已提交
1288
	}
1289 1290 1291 1292 1293 1294
	/* no, then find CPU DAI from registered DAIs*/
	list_for_each_entry(platform, &platform_list, list) {
		if (!strcmp(platform->name, dai_link->platform_name)) {
			rtd->platform = platform;
			goto out;
		}
1295 1296
	}

1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
	dev_dbg(card->dev, "platform %s not registered\n",
			dai_link->platform_name);
	return 0;

out:
	/* mark rtd as complete if we found all 4 of our client devices */
	if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
		rtd->complete = 1;
		card->num_rtd++;
	}
	return 1;
}

1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
static void soc_remove_codec(struct snd_soc_codec *codec)
{
	int err;

	if (codec->driver->remove) {
		err = codec->driver->remove(codec);
		if (err < 0)
			dev_err(codec->dev,
				"asoc: failed to remove %s: %d\n",
				codec->name, err);
	}

	/* Make sure all DAPM widgets are freed */
	snd_soc_dapm_free(&codec->dapm);

	soc_cleanup_codec_debugfs(codec);
	codec->probed = 0;
	list_del(&codec->card_list);
	module_put(codec->dev->driver->owner);
}

1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
static void soc_remove_dai_link(struct snd_soc_card *card, int num)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
	int err;

	/* unregister the rtd device */
	if (rtd->dev_registered) {
		device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
1342
		device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
		device_unregister(&rtd->dev);
		rtd->dev_registered = 0;
	}

	/* remove the CODEC DAI */
	if (codec_dai && codec_dai->probed) {
		if (codec_dai->driver->remove) {
			err = codec_dai->driver->remove(codec_dai);
			if (err < 0)
				printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
1353
		}
1354 1355 1356
		codec_dai->probed = 0;
		list_del(&codec_dai->card_list);
	}
1357

1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368
	/* remove the platform */
	if (platform && platform->probed) {
		if (platform->driver->remove) {
			err = platform->driver->remove(platform);
			if (err < 0)
				printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
		}
		platform->probed = 0;
		list_del(&platform->card_list);
		module_put(platform->dev->driver->owner);
	}
1369

1370
	/* remove the CODEC */
1371 1372
	if (codec && codec->probed)
		soc_remove_codec(codec);
F
Frank Mandarino 已提交
1373

1374 1375 1376 1377 1378 1379
	/* remove the cpu_dai */
	if (cpu_dai && cpu_dai->probed) {
		if (cpu_dai->driver->remove) {
			err = cpu_dai->driver->remove(cpu_dai);
			if (err < 0)
				printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
F
Frank Mandarino 已提交
1380
		}
1381 1382 1383
		cpu_dai->probed = 0;
		list_del(&cpu_dai->card_list);
		module_put(cpu_dai->dev->driver->owner);
F
Frank Mandarino 已提交
1384
	}
1385
}
F
Frank Mandarino 已提交
1386

1387 1388 1389 1390 1391
static void soc_set_name_prefix(struct snd_soc_card *card,
				struct snd_soc_codec *codec)
{
	int i;

1392
	if (card->codec_conf == NULL)
1393 1394
		return;

1395 1396
	for (i = 0; i < card->num_configs; i++) {
		struct snd_soc_codec_conf *map = &card->codec_conf[i];
1397 1398 1399 1400 1401 1402 1403
		if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
			codec->name_prefix = map->name_prefix;
			break;
		}
	}
}

1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425
static int soc_probe_codec(struct snd_soc_card *card,
			   struct snd_soc_codec *codec)
{
	int ret = 0;

	codec->card = card;
	codec->dapm.card = card;
	soc_set_name_prefix(card, codec);

	if (codec->driver->probe) {
		ret = codec->driver->probe(codec);
		if (ret < 0) {
			dev_err(codec->dev,
				"asoc: failed to probe CODEC %s: %d\n",
				codec->name, ret);
			return ret;
		}
	}

	soc_init_codec_debugfs(codec);

	/* mark codec as probed and add to card codec list */
1426 1427 1428
	if (!try_module_get(codec->dev->driver->owner))
		return -ENODEV;

1429 1430
	codec->probed = 1;
	list_add(&codec->card_list, &card->codec_dev_list);
1431
	list_add(&codec->dapm.list, &card->dapm_list);
1432 1433 1434 1435

	return ret;
}

1436 1437
static void rtd_release(struct device *dev) {}

1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
static int soc_post_component_init(struct snd_soc_card *card,
				   struct snd_soc_codec *codec,
				   int num, int dailess)
{
	struct snd_soc_dai_link *dai_link = NULL;
	struct snd_soc_aux_dev *aux_dev = NULL;
	struct snd_soc_pcm_runtime *rtd;
	const char *temp, *name;
	int ret = 0;

	if (!dailess) {
		dai_link = &card->dai_link[num];
		rtd = &card->rtd[num];
		name = dai_link->name;
	} else {
		aux_dev = &card->aux_dev[num];
		rtd = &card->rtd_aux[num];
		name = aux_dev->name;
	}

	/* machine controls, routes and widgets are not prefixed */
	temp = codec->name_prefix;
	codec->name_prefix = NULL;

	/* do machine specific initialization */
	if (!dailess && dai_link->init)
		ret = dai_link->init(rtd);
	else if (dailess && aux_dev->init)
		ret = aux_dev->init(&codec->dapm);
	if (ret < 0) {
		dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
		return ret;
	}
	codec->name_prefix = temp;

	/* Make sure all DAPM widgets are instantiated */
	snd_soc_dapm_new_widgets(&codec->dapm);
	snd_soc_dapm_sync(&codec->dapm);

	/* register the rtd device */
	rtd->codec = codec;
	rtd->card = card;
	rtd->dev.parent = card->dev;
	rtd->dev.release = rtd_release;
	rtd->dev.init_name = name;
	ret = device_register(&rtd->dev);
	if (ret < 0) {
		dev_err(card->dev,
			"asoc: failed to register runtime device: %d\n", ret);
		return ret;
	}
	rtd->dev_registered = 1;

	/* add DAPM sysfs entries for this codec */
	ret = snd_soc_dapm_sys_add(&rtd->dev);
	if (ret < 0)
		dev_err(codec->dev,
			"asoc: failed to add codec dapm sysfs entries: %d\n",
			ret);

	/* add codec sysfs entries */
	ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
	if (ret < 0)
		dev_err(codec->dev,
			"asoc: failed to add codec sysfs files: %d\n", ret);

	return 0;
}

1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
static int soc_probe_dai_link(struct snd_soc_card *card, int num)
{
	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
	int ret;

	dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);

	/* config components */
	codec_dai->codec = codec;
	cpu_dai->platform = platform;
	codec_dai->card = card;
	cpu_dai->card = card;

	/* set default power off timeout */
	rtd->pmdown_time = pmdown_time;

	/* probe the cpu_dai */
	if (!cpu_dai->probed) {
		if (cpu_dai->driver->probe) {
			ret = cpu_dai->driver->probe(cpu_dai);
			if (ret < 0) {
				printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
						cpu_dai->name);
				return ret;
			}
		}
		cpu_dai->probed = 1;
		/* mark cpu_dai as probed and add to card cpu_dai list */
		list_add(&cpu_dai->card_list, &card->dai_dev_list);
F
Frank Mandarino 已提交
1540 1541
	}

1542 1543
	/* probe the CODEC */
	if (!codec->probed) {
1544 1545 1546
		ret = soc_probe_codec(card, codec);
		if (ret < 0)
			return ret;
F
Frank Mandarino 已提交
1547 1548
	}

1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
	/* probe the platform */
	if (!platform->probed) {
		if (platform->driver->probe) {
			ret = platform->driver->probe(platform);
			if (ret < 0) {
				printk(KERN_ERR "asoc: failed to probe platform %s\n",
						platform->name);
				return ret;
			}
		}
		/* mark platform as probed and add to card platform list */
1560 1561 1562 1563

		if (!try_module_get(platform->dev->driver->owner))
			return -ENODEV;

1564 1565 1566
		platform->probed = 1;
		list_add(&platform->card_list, &card->platform_dev_list);
	}
1567

1568 1569 1570 1571
	/* probe the CODEC DAI */
	if (!codec_dai->probed) {
		if (codec_dai->driver->probe) {
			ret = codec_dai->driver->probe(codec_dai);
M
Mark Brown 已提交
1572
			if (ret < 0) {
1573 1574 1575
				printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
						codec_dai->name);
				return ret;
M
Mark Brown 已提交
1576 1577
			}
		}
1578 1579 1580 1581

		/* mark cpu_dai as probed and add to card cpu_dai list */
		codec_dai->probed = 1;
		list_add(&codec_dai->card_list, &card->dai_dev_list);
M
Mark Brown 已提交
1582 1583
	}

1584 1585 1586
	/* DAPM dai link stream work */
	INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);

1587 1588
	ret = soc_post_component_init(card, codec, num, 0);
	if (ret)
1589
		return ret;
M
Mark Brown 已提交
1590

1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608
	ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
	if (ret < 0)
		printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");

	/* create the pcm */
	ret = soc_new_pcm(rtd, num);
	if (ret < 0) {
		printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
		return ret;
	}

	/* add platform data for AC97 devices */
	if (rtd->codec_dai->driver->ac97_control)
		snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);

	return 0;
}

M
Mark Brown 已提交
1609
#ifdef CONFIG_SND_SOC_AC97_BUS
1610 1611 1612 1613
static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
{
	int ret;

M
Mark Brown 已提交
1614 1615 1616
	/* Only instantiate AC97 if not already done by the adaptor
	 * for the generic AC97 subsystem.
	 */
1617
	if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1618 1619 1620 1621 1622 1623 1624 1625 1626 1627
		/*
		 * It is possible that the AC97 device is already registered to
		 * the device subsystem. This happens when the device is created
		 * via snd_ac97_mixer(). Currently only SoC codec that does so
		 * is the generic AC97 glue but others migh emerge.
		 *
		 * In those cases we don't try to register the device again.
		 */
		if (!rtd->codec->ac97_created)
			return 0;
1628 1629

		ret = soc_ac97_dev_register(rtd->codec);
M
Mark Brown 已提交
1630 1631
		if (ret < 0) {
			printk(KERN_ERR "asoc: AC97 device register failed\n");
1632
			return ret;
M
Mark Brown 已提交
1633
		}
1634 1635

		rtd->codec->ac97_registered = 1;
M
Mark Brown 已提交
1636
	}
1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
	return 0;
}

static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
{
	if (codec->ac97_registered) {
		soc_ac97_dev_unregister(codec);
		codec->ac97_registered = 0;
	}
}
M
Mark Brown 已提交
1647 1648
#endif

1649 1650 1651 1652
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
{
	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
	struct snd_soc_codec *codec;
1653
	int ret = -ENODEV;
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663

	/* find CODEC from registered CODECs*/
	list_for_each_entry(codec, &codec_list, list) {
		if (!strcmp(codec->name, aux_dev->codec_name)) {
			if (codec->probed) {
				dev_err(codec->dev,
					"asoc: codec already probed");
				ret = -EBUSY;
				goto out;
			}
1664
			goto found;
1665 1666
		}
	}
1667 1668 1669
	/* codec not found */
	dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
	goto out;
1670

1671
found:
1672 1673 1674
	if (!try_module_get(codec->dev->driver->owner))
		return -ENODEV;

1675
	ret = soc_probe_codec(card, codec);
1676
	if (ret < 0)
1677
		return ret;
1678

1679
	ret = soc_post_component_init(card, codec, num, 1);
1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691

out:
	return ret;
}

static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
	struct snd_soc_codec *codec = rtd->codec;

	/* unregister the rtd device */
	if (rtd->dev_registered) {
1692
		device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1693 1694 1695 1696
		device_unregister(&rtd->dev);
		rtd->dev_registered = 0;
	}

1697 1698
	if (codec && codec->probed)
		soc_remove_codec(codec);
1699 1700
}

1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
				    enum snd_soc_compress_type compress_type)
{
	int ret;

	if (codec->cache_init)
		return 0;

	/* override the compress_type if necessary */
	if (compress_type && codec->compress_type != compress_type)
		codec->compress_type = compress_type;
	ret = snd_soc_cache_init(codec);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cache compression type: %d\n",
			ret);
		return ret;
	}
	codec->cache_init = 1;
	return 0;
}

1722 1723 1724
static void snd_soc_instantiate_card(struct snd_soc_card *card)
{
	struct platform_device *pdev = to_platform_device(card->dev);
1725 1726 1727
	struct snd_soc_codec *codec;
	struct snd_soc_codec_conf *codec_conf;
	enum snd_soc_compress_type compress_type;
1728
	int ret, i;
M
Mark Brown 已提交
1729

1730
	mutex_lock(&card->mutex);
1731

1732 1733 1734 1735
	if (card->instantiated) {
		mutex_unlock(&card->mutex);
		return;
	}
M
Mark Brown 已提交
1736

1737 1738 1739
	/* bind DAIs */
	for (i = 0; i < card->num_links; i++)
		soc_bind_dai_link(card, i);
M
Mark Brown 已提交
1740

1741 1742 1743 1744 1745
	/* bind completed ? */
	if (card->num_rtd != card->num_links) {
		mutex_unlock(&card->mutex);
		return;
	}
1746

1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779
	/* initialize the register cache for each available codec */
	list_for_each_entry(codec, &codec_list, list) {
		if (codec->cache_init)
			continue;
		/* check to see if we need to override the compress_type */
		for (i = 0; i < card->num_configs; ++i) {
			codec_conf = &card->codec_conf[i];
			if (!strcmp(codec->name, codec_conf->dev_name)) {
				compress_type = codec_conf->compress_type;
				if (compress_type && compress_type
				    != codec->compress_type)
					break;
			}
		}
		if (i == card->num_configs) {
			/* no need to override the compress_type so
			 * go ahead and do the standard thing */
			ret = snd_soc_init_codec_cache(codec, 0);
			if (ret < 0) {
				mutex_unlock(&card->mutex);
				return;
			}
			continue;
		}
		/* override the compress_type with the one supplied in
		 * the machine driver */
		ret = snd_soc_init_codec_cache(codec, compress_type);
		if (ret < 0) {
			mutex_unlock(&card->mutex);
			return;
		}
	}

1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794
	/* card bind complete so register a sound card */
	ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
			card->owner, 0, &card->snd_card);
	if (ret < 0) {
		printk(KERN_ERR "asoc: can't create sound card for card %s\n",
			card->name);
		mutex_unlock(&card->mutex);
		return;
	}
	card->snd_card->dev = card->dev;

#ifdef CONFIG_PM
	/* deferred resume work */
	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
F
Frank Mandarino 已提交
1795

1796 1797 1798 1799 1800 1801
	/* initialise the sound card only once */
	if (card->probe) {
		ret = card->probe(pdev);
		if (ret < 0)
			goto card_probe_error;
	}
M
Mark Brown 已提交
1802

1803 1804 1805
	for (i = 0; i < card->num_links; i++) {
		ret = soc_probe_dai_link(card, i);
		if (ret < 0) {
1806 1807
			pr_err("asoc: failed to instantiate card %s: %d\n",
			       card->name, ret);
1808 1809 1810
			goto probe_dai_err;
		}
	}
F
Frank Mandarino 已提交
1811

1812 1813 1814 1815 1816 1817 1818 1819 1820
	for (i = 0; i < card->num_aux_devs; i++) {
		ret = soc_probe_aux_dev(card, i);
		if (ret < 0) {
			pr_err("asoc: failed to add auxiliary devices %s: %d\n",
			       card->name, ret);
			goto probe_aux_dev_err;
		}
	}

1821 1822 1823 1824 1825 1826 1827 1828
	snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
		 "%s",  card->name);
	snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
		 "%s", card->name);

	ret = snd_card_register(card->snd_card);
	if (ret < 0) {
		printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
1829
		goto probe_aux_dev_err;
F
Frank Mandarino 已提交
1830 1831
	}

1832 1833 1834
#ifdef CONFIG_SND_SOC_AC97_BUS
	/* register any AC97 codecs */
	for (i = 0; i < card->num_rtd; i++) {
1835 1836 1837 1838
		ret = soc_register_ac97_dai_link(&card->rtd[i]);
		if (ret < 0) {
			printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
			while (--i >= 0)
M
Mark Brown 已提交
1839
				soc_unregister_ac97_dai_link(card->rtd[i].codec);
1840
			goto probe_aux_dev_err;
1841
		}
1842
	}
1843 1844 1845 1846 1847 1848
#endif

	card->instantiated = 1;
	mutex_unlock(&card->mutex);
	return;

1849 1850 1851 1852
probe_aux_dev_err:
	for (i = 0; i < card->num_aux_devs; i++)
		soc_remove_aux_dev(card, i);

1853 1854 1855 1856 1857
probe_dai_err:
	for (i = 0; i < card->num_links; i++)
		soc_remove_dai_link(card, i);

card_probe_error:
1858 1859
	if (card->remove)
		card->remove(pdev);
1860 1861 1862 1863

	snd_card_free(card->snd_card);

	mutex_unlock(&card->mutex);
1864
}
F
Frank Mandarino 已提交
1865

1866
/*
1867
 * Attempt to initialise any uninitialised cards.  Must be called with
1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879
 * client_mutex.
 */
static void snd_soc_instantiate_cards(void)
{
	struct snd_soc_card *card;
	list_for_each_entry(card, &card_list, list)
		snd_soc_instantiate_card(card);
}

/* probes a new socdev */
static int soc_probe(struct platform_device *pdev)
{
1880
	struct snd_soc_card *card = platform_get_drvdata(pdev);
1881 1882 1883 1884
	int ret = 0;

	/* Bodge while we unpick instantiation */
	card->dev = &pdev->dev;
1885 1886 1887
	INIT_LIST_HEAD(&card->dai_dev_list);
	INIT_LIST_HEAD(&card->codec_dev_list);
	INIT_LIST_HEAD(&card->platform_dev_list);
1888
	INIT_LIST_HEAD(&card->widgets);
1889
	INIT_LIST_HEAD(&card->paths);
1890
	INIT_LIST_HEAD(&card->dapm_list);
1891

1892 1893
	soc_init_card_debugfs(card);

1894 1895 1896 1897 1898 1899 1900
	ret = snd_soc_register_card(card);
	if (ret != 0) {
		dev_err(&pdev->dev, "Failed to register card\n");
		return ret;
	}

	return 0;
F
Frank Mandarino 已提交
1901 1902 1903 1904 1905
}

/* removes a socdev */
static int soc_remove(struct platform_device *pdev)
{
1906
	struct snd_soc_card *card = platform_get_drvdata(pdev);
F
Frank Mandarino 已提交
1907 1908
	int i;

1909
		if (card->instantiated) {
1910

1911 1912 1913
		/* make sure any delayed work runs */
		for (i = 0; i < card->num_rtd; i++) {
			struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1914
			flush_delayed_work_sync(&rtd->delayed_work);
1915
		}
F
Frank Mandarino 已提交
1916

1917 1918 1919 1920
		/* remove auxiliary devices */
		for (i = 0; i < card->num_aux_devs; i++)
			soc_remove_aux_dev(card, i);

1921 1922 1923 1924
		/* remove and free each DAI */
		for (i = 0; i < card->num_rtd; i++)
			soc_remove_dai_link(card, i);

1925 1926
		soc_cleanup_card_debugfs(card);

1927
		/* remove the card */
1928 1929
		if (card->remove)
			card->remove(pdev);
F
Frank Mandarino 已提交
1930

1931 1932 1933
		kfree(card->rtd);
		snd_card_free(card->snd_card);
	}
M
Mark Brown 已提交
1934
	snd_soc_unregister_card(card);
F
Frank Mandarino 已提交
1935 1936 1937
	return 0;
}

M
Mark Brown 已提交
1938
static int soc_poweroff(struct device *dev)
M
Mark Brown 已提交
1939
{
M
Mark Brown 已提交
1940
	struct platform_device *pdev = to_platform_device(dev);
1941 1942
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	int i;
M
Mark Brown 已提交
1943 1944

	if (!card->instantiated)
M
Mark Brown 已提交
1945
		return 0;
M
Mark Brown 已提交
1946 1947 1948

	/* Flush out pmdown_time work - we actually do want to run it
	 * now, we're shutting down so no imminent restart. */
1949 1950
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1951
		flush_delayed_work_sync(&rtd->delayed_work);
1952
	}
M
Mark Brown 已提交
1953

1954
	snd_soc_dapm_shutdown(card);
M
Mark Brown 已提交
1955 1956

	return 0;
M
Mark Brown 已提交
1957 1958
}

1959
static const struct dev_pm_ops soc_pm_ops = {
M
Mark Brown 已提交
1960 1961 1962 1963 1964
	.suspend = soc_suspend,
	.resume = soc_resume,
	.poweroff = soc_poweroff,
};

F
Frank Mandarino 已提交
1965 1966 1967 1968
/* ASoC platform driver */
static struct platform_driver soc_driver = {
	.driver		= {
		.name		= "soc-audio",
1969
		.owner		= THIS_MODULE,
M
Mark Brown 已提交
1970
		.pm		= &soc_pm_ops,
F
Frank Mandarino 已提交
1971 1972 1973 1974 1975 1976
	},
	.probe		= soc_probe,
	.remove		= soc_remove,
};

/* create a new pcm */
1977 1978 1979 1980 1981 1982
static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
F
Frank Mandarino 已提交
1983 1984 1985 1986 1987
	struct snd_pcm *pcm;
	char new_name[64];
	int ret = 0, playback = 0, capture = 0;

	/* check client and interface hw capabilities */
1988
	snprintf(new_name, sizeof(new_name), "%s %s-%d",
1989
			rtd->dai_link->stream_name, codec_dai->name, num);
F
Frank Mandarino 已提交
1990

1991
	if (codec_dai->driver->playback.channels_min)
F
Frank Mandarino 已提交
1992
		playback = 1;
1993
	if (codec_dai->driver->capture.channels_min)
F
Frank Mandarino 已提交
1994 1995
		capture = 1;

1996 1997 1998
	dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
	ret = snd_pcm_new(rtd->card->snd_card, new_name,
			num, playback, capture, &pcm);
F
Frank Mandarino 已提交
1999
	if (ret < 0) {
2000
		printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
F
Frank Mandarino 已提交
2001 2002 2003
		return ret;
	}

2004
	rtd->pcm = pcm;
F
Frank Mandarino 已提交
2005
	pcm->private_data = rtd;
2006 2007 2008 2009 2010 2011 2012
	soc_pcm_ops.mmap = platform->driver->ops->mmap;
	soc_pcm_ops.pointer = platform->driver->ops->pointer;
	soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
	soc_pcm_ops.copy = platform->driver->ops->copy;
	soc_pcm_ops.silence = platform->driver->ops->silence;
	soc_pcm_ops.ack = platform->driver->ops->ack;
	soc_pcm_ops.page = platform->driver->ops->page;
F
Frank Mandarino 已提交
2013 2014 2015 2016 2017 2018 2019

	if (playback)
		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);

	if (capture)
		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);

2020
	ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
F
Frank Mandarino 已提交
2021 2022 2023 2024 2025
	if (ret < 0) {
		printk(KERN_ERR "asoc: platform pcm constructor failed\n");
		return ret;
	}

2026
	pcm->private_free = platform->driver->pcm_free;
F
Frank Mandarino 已提交
2027 2028 2029 2030 2031
	printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
		cpu_dai->name);
	return ret;
}

2032 2033 2034 2035 2036 2037 2038 2039 2040 2041
/**
 * snd_soc_codec_volatile_register: Report if a register is volatile.
 *
 * @codec: CODEC to query.
 * @reg: Register to query.
 *
 * Boolean function indiciating if a CODEC register is volatile.
 */
int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
{
2042 2043
	if (codec->driver->volatile_register)
		return codec->driver->volatile_register(reg);
2044 2045 2046 2047 2048
	else
		return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);

F
Frank Mandarino 已提交
2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077
/**
 * snd_soc_new_ac97_codec - initailise AC97 device
 * @codec: audio codec
 * @ops: AC97 bus operations
 * @num: AC97 codec number
 *
 * Initialises AC97 codec resources for use by ad-hoc devices only.
 */
int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
	struct snd_ac97_bus_ops *ops, int num)
{
	mutex_lock(&codec->mutex);

	codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
	if (codec->ac97 == NULL) {
		mutex_unlock(&codec->mutex);
		return -ENOMEM;
	}

	codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
	if (codec->ac97->bus == NULL) {
		kfree(codec->ac97);
		codec->ac97 = NULL;
		mutex_unlock(&codec->mutex);
		return -ENOMEM;
	}

	codec->ac97->bus->ops = ops;
	codec->ac97->num = num;
2078 2079 2080 2081 2082 2083 2084

	/*
	 * Mark the AC97 device to be created by us. This way we ensure that the
	 * device will be registered with the device subsystem later on.
	 */
	codec->ac97_created = 1;

F
Frank Mandarino 已提交
2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098
	mutex_unlock(&codec->mutex);
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);

/**
 * snd_soc_free_ac97_codec - free AC97 codec device
 * @codec: audio codec
 *
 * Frees AC97 codec device resources.
 */
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
{
	mutex_lock(&codec->mutex);
2099 2100 2101
#ifdef CONFIG_SND_SOC_AC97_BUS
	soc_unregister_ac97_dai_link(codec);
#endif
F
Frank Mandarino 已提交
2102 2103 2104
	kfree(codec->ac97->bus);
	kfree(codec->ac97);
	codec->ac97 = NULL;
2105
	codec->ac97_created = 0;
F
Frank Mandarino 已提交
2106 2107 2108 2109
	mutex_unlock(&codec->mutex);
}
EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);

2110 2111 2112 2113
unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
{
	unsigned int ret;

2114
	ret = codec->read(codec, reg);
2115
	dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2116
	trace_snd_soc_reg_read(codec, reg, ret);
2117 2118 2119 2120 2121 2122 2123 2124 2125

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_read);

unsigned int snd_soc_write(struct snd_soc_codec *codec,
			   unsigned int reg, unsigned int val)
{
	dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2126
	trace_snd_soc_reg_write(codec, reg, val);
2127
	return codec->write(codec, reg, val);
2128 2129 2130
}
EXPORT_SYMBOL_GPL(snd_soc_write);

F
Frank Mandarino 已提交
2131 2132 2133 2134 2135 2136 2137 2138 2139
/**
 * snd_soc_update_bits - update codec register bits
 * @codec: audio codec
 * @reg: codec register
 * @mask: register mask
 * @value: new value
 *
 * Writes new register value.
 *
2140
 * Returns 1 for change, 0 for no change, or negative error code.
F
Frank Mandarino 已提交
2141 2142
 */
int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2143
				unsigned int mask, unsigned int value)
F
Frank Mandarino 已提交
2144 2145
{
	int change;
2146
	unsigned int old, new;
2147 2148 2149 2150 2151
	int ret;

	ret = snd_soc_read(codec, reg);
	if (ret < 0)
		return ret;
F
Frank Mandarino 已提交
2152

2153
	old = ret;
F
Frank Mandarino 已提交
2154 2155
	new = (old & ~mask) | value;
	change = old != new;
2156 2157 2158 2159 2160
	if (change) {
		ret = snd_soc_write(codec, reg, new);
		if (ret < 0)
			return ret;
	}
F
Frank Mandarino 已提交
2161 2162 2163 2164 2165

	return change;
}
EXPORT_SYMBOL_GPL(snd_soc_update_bits);

2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176
/**
 * snd_soc_update_bits_locked - update codec register bits
 * @codec: audio codec
 * @reg: codec register
 * @mask: register mask
 * @value: new value
 *
 * Writes new register value, and takes the codec mutex.
 *
 * Returns 1 for change else 0.
 */
2177 2178 2179
int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
			       unsigned short reg, unsigned int mask,
			       unsigned int value)
2180 2181 2182 2183 2184 2185 2186 2187 2188
{
	int change;

	mutex_lock(&codec->mutex);
	change = snd_soc_update_bits(codec, reg, mask, value);
	mutex_unlock(&codec->mutex);

	return change;
}
2189
EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2190

F
Frank Mandarino 已提交
2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
/**
 * snd_soc_test_bits - test register for change
 * @codec: audio codec
 * @reg: codec register
 * @mask: register mask
 * @value: new value
 *
 * Tests a register with a new value and checks if the new value is
 * different from the old value.
 *
 * Returns 1 for change else 0.
 */
int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2204
				unsigned int mask, unsigned int value)
F
Frank Mandarino 已提交
2205 2206
{
	int change;
2207
	unsigned int old, new;
F
Frank Mandarino 已提交
2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243

	old = snd_soc_read(codec, reg);
	new = (old & ~mask) | value;
	change = old != new;

	return change;
}
EXPORT_SYMBOL_GPL(snd_soc_test_bits);

/**
 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
 * @substream: the pcm substream
 * @hw: the hardware parameters
 *
 * Sets the substream runtime hardware parameters.
 */
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
	const struct snd_pcm_hardware *hw)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	runtime->hw.info = hw->info;
	runtime->hw.formats = hw->formats;
	runtime->hw.period_bytes_min = hw->period_bytes_min;
	runtime->hw.period_bytes_max = hw->period_bytes_max;
	runtime->hw.periods_min = hw->periods_min;
	runtime->hw.periods_max = hw->periods_max;
	runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
	runtime->hw.fifo_size = hw->fifo_size;
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);

/**
 * snd_soc_cnew - create new control
 * @_template: control template
 * @data: control private data
M
Mark Brown 已提交
2244
 * @long_name: control long name
F
Frank Mandarino 已提交
2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263
 *
 * Create a new mixer control from a template control.
 *
 * Returns 0 for success, else error.
 */
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
	void *data, char *long_name)
{
	struct snd_kcontrol_new template;

	memcpy(&template, _template, sizeof(template));
	if (long_name)
		template.name = long_name;
	template.index = 0;

	return snd_ctl_new1(&template, data);
}
EXPORT_SYMBOL_GPL(snd_soc_cnew);

I
Ian Molton 已提交
2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
/**
 * snd_soc_add_controls - add an array of controls to a codec.
 * Convienience function to add a list of controls. Many codecs were
 * duplicating this code.
 *
 * @codec: codec to add controls to
 * @controls: array of controls to add
 * @num_controls: number of elements in the array
 *
 * Return 0 for success, else error.
 */
int snd_soc_add_controls(struct snd_soc_codec *codec,
	const struct snd_kcontrol_new *controls, int num_controls)
{
2278
	struct snd_card *card = codec->card->snd_card;
2279
	char prefixed_name[44], *name;
I
Ian Molton 已提交
2280 2281 2282 2283
	int err, i;

	for (i = 0; i < num_controls; i++) {
		const struct snd_kcontrol_new *control = &controls[i];
2284 2285 2286 2287 2288 2289 2290 2291
		if (codec->name_prefix) {
			snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
				 codec->name_prefix, control->name);
			name = prefixed_name;
		} else {
			name = control->name;
		}
		err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
I
Ian Molton 已提交
2292
		if (err < 0) {
2293
			dev_err(codec->dev, "%s: Failed to add %s: %d\n",
2294
				codec->name, name, err);
I
Ian Molton 已提交
2295 2296 2297 2298 2299 2300 2301 2302
			return err;
		}
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_add_controls);

F
Frank Mandarino 已提交
2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319
/**
 * snd_soc_info_enum_double - enumerated double mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a double enumerated
 * mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2320
	uinfo->value.enumerated.items = e->max;
F
Frank Mandarino 已提交
2321

2322 2323
	if (uinfo->value.enumerated.item > e->max - 1)
		uinfo->value.enumerated.item = e->max - 1;
F
Frank Mandarino 已提交
2324 2325 2326 2327 2328 2329 2330 2331 2332
	strcpy(uinfo->value.enumerated.name,
		e->texts[uinfo->value.enumerated.item]);
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);

/**
 * snd_soc_get_enum_double - enumerated double mixer get callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2333
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2334 2335 2336 2337 2338 2339 2340 2341 2342 2343
 *
 * Callback to get the value of a double enumerated mixer.
 *
 * Returns 0 for success.
 */
int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2344
	unsigned int val, bitmask;
F
Frank Mandarino 已提交
2345

2346
	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
F
Frank Mandarino 已提交
2347 2348
		;
	val = snd_soc_read(codec, e->reg);
2349 2350
	ucontrol->value.enumerated.item[0]
		= (val >> e->shift_l) & (bitmask - 1);
F
Frank Mandarino 已提交
2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361
	if (e->shift_l != e->shift_r)
		ucontrol->value.enumerated.item[1] =
			(val >> e->shift_r) & (bitmask - 1);

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);

/**
 * snd_soc_put_enum_double - enumerated double mixer put callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2362
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2363 2364 2365 2366 2367 2368 2369 2370 2371 2372
 *
 * Callback to set the value of a double enumerated mixer.
 *
 * Returns 0 for success.
 */
int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2373 2374
	unsigned int val;
	unsigned int mask, bitmask;
F
Frank Mandarino 已提交
2375

2376
	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
F
Frank Mandarino 已提交
2377
		;
2378
	if (ucontrol->value.enumerated.item[0] > e->max - 1)
F
Frank Mandarino 已提交
2379 2380 2381 2382
		return -EINVAL;
	val = ucontrol->value.enumerated.item[0] << e->shift_l;
	mask = (bitmask - 1) << e->shift_l;
	if (e->shift_l != e->shift_r) {
2383
		if (ucontrol->value.enumerated.item[1] > e->max - 1)
F
Frank Mandarino 已提交
2384 2385 2386 2387 2388
			return -EINVAL;
		val |= ucontrol->value.enumerated.item[1] << e->shift_r;
		mask |= (bitmask - 1) << e->shift_r;
	}

2389
	return snd_soc_update_bits_locked(codec, e->reg, mask, val);
F
Frank Mandarino 已提交
2390 2391 2392
}
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);

P
Peter Ujfalusi 已提交
2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408
/**
 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to get the value of a double semi enumerated mixer.
 *
 * Semi enumerated mixer: the enumerated items are referred as values. Can be
 * used for handling bitfield coded enumeration for example.
 *
 * Returns 0 for success.
 */
int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2409
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2410
	unsigned int reg_val, val, mux;
P
Peter Ujfalusi 已提交
2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447

	reg_val = snd_soc_read(codec, e->reg);
	val = (reg_val >> e->shift_l) & e->mask;
	for (mux = 0; mux < e->max; mux++) {
		if (val == e->values[mux])
			break;
	}
	ucontrol->value.enumerated.item[0] = mux;
	if (e->shift_l != e->shift_r) {
		val = (reg_val >> e->shift_r) & e->mask;
		for (mux = 0; mux < e->max; mux++) {
			if (val == e->values[mux])
				break;
		}
		ucontrol->value.enumerated.item[1] = mux;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);

/**
 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to set the value of a double semi enumerated mixer.
 *
 * Semi enumerated mixer: the enumerated items are referred as values. Can be
 * used for handling bitfield coded enumeration for example.
 *
 * Returns 0 for success.
 */
int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2448
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2449 2450
	unsigned int val;
	unsigned int mask;
P
Peter Ujfalusi 已提交
2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462

	if (ucontrol->value.enumerated.item[0] > e->max - 1)
		return -EINVAL;
	val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
	mask = e->mask << e->shift_l;
	if (e->shift_l != e->shift_r) {
		if (ucontrol->value.enumerated.item[1] > e->max - 1)
			return -EINVAL;
		val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
		mask |= e->mask << e->shift_r;
	}

2463
	return snd_soc_update_bits_locked(codec, e->reg, mask, val);
P
Peter Ujfalusi 已提交
2464 2465 2466
}
EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);

F
Frank Mandarino 已提交
2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483
/**
 * snd_soc_info_enum_ext - external enumerated single mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about an external enumerated
 * single mixer.
 *
 * Returns 0 for success.
 */
int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
2484
	uinfo->value.enumerated.items = e->max;
F
Frank Mandarino 已提交
2485

2486 2487
	if (uinfo->value.enumerated.item > e->max - 1)
		uinfo->value.enumerated.item = e->max - 1;
F
Frank Mandarino 已提交
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505
	strcpy(uinfo->value.enumerated.name,
		e->texts[uinfo->value.enumerated.item]);
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);

/**
 * snd_soc_info_volsw_ext - external single mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a single external mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
P
Philipp Zabel 已提交
2506 2507
	int max = kcontrol->private_value;

2508
	if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
P
Philipp Zabel 已提交
2509 2510 2511
		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	else
		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
F
Frank Mandarino 已提交
2512 2513 2514

	uinfo->count = 1;
	uinfo->value.integer.min = 0;
P
Philipp Zabel 已提交
2515
	uinfo->value.integer.max = max;
F
Frank Mandarino 已提交
2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);

/**
 * snd_soc_info_volsw - single mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a single mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
2532 2533
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2534
	int platform_max;
2535
	unsigned int shift = mc->shift;
2536
	unsigned int rshift = mc->rshift;
F
Frank Mandarino 已提交
2537

2538 2539 2540 2541 2542
	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
P
Philipp Zabel 已提交
2543 2544 2545 2546
		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	else
		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

F
Frank Mandarino 已提交
2547 2548
	uinfo->count = shift == rshift ? 1 : 2;
	uinfo->value.integer.min = 0;
2549
	uinfo->value.integer.max = platform_max;
F
Frank Mandarino 已提交
2550 2551 2552 2553 2554 2555 2556
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw);

/**
 * snd_soc_get_volsw - single mixer get callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2557
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2558 2559 2560 2561 2562 2563 2564 2565
 *
 * Callback to get the value of a single mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2566 2567
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
F
Frank Mandarino 已提交
2568
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2569 2570 2571
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2572
	int max = mc->max;
2573 2574
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
F
Frank Mandarino 已提交
2575 2576 2577 2578 2579 2580 2581 2582

	ucontrol->value.integer.value[0] =
		(snd_soc_read(codec, reg) >> shift) & mask;
	if (shift != rshift)
		ucontrol->value.integer.value[1] =
			(snd_soc_read(codec, reg) >> rshift) & mask;
	if (invert) {
		ucontrol->value.integer.value[0] =
P
Philipp Zabel 已提交
2583
			max - ucontrol->value.integer.value[0];
F
Frank Mandarino 已提交
2584 2585
		if (shift != rshift)
			ucontrol->value.integer.value[1] =
P
Philipp Zabel 已提交
2586
				max - ucontrol->value.integer.value[1];
F
Frank Mandarino 已提交
2587 2588 2589 2590 2591 2592 2593 2594 2595
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw);

/**
 * snd_soc_put_volsw - single mixer put callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2596
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2597 2598 2599 2600 2601 2602 2603 2604
 *
 * Callback to set the value of a single mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2605 2606
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
F
Frank Mandarino 已提交
2607
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2608 2609 2610
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2611
	int max = mc->max;
2612 2613
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
2614
	unsigned int val, val2, val_mask;
F
Frank Mandarino 已提交
2615 2616 2617

	val = (ucontrol->value.integer.value[0] & mask);
	if (invert)
P
Philipp Zabel 已提交
2618
		val = max - val;
F
Frank Mandarino 已提交
2619 2620 2621 2622 2623
	val_mask = mask << shift;
	val = val << shift;
	if (shift != rshift) {
		val2 = (ucontrol->value.integer.value[1] & mask);
		if (invert)
P
Philipp Zabel 已提交
2624
			val2 = max - val2;
F
Frank Mandarino 已提交
2625 2626 2627
		val_mask |= mask << rshift;
		val |= val2 << rshift;
	}
2628
	return snd_soc_update_bits_locked(codec, reg, val_mask, val);
F
Frank Mandarino 已提交
2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw);

/**
 * snd_soc_info_volsw_2r - double mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a double mixer control that
 * spans 2 codec registers.
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
2645 2646
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2647
	int platform_max;
P
Philipp Zabel 已提交
2648

2649 2650 2651 2652 2653
	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
P
Philipp Zabel 已提交
2654 2655 2656
		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	else
		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
F
Frank Mandarino 已提交
2657 2658 2659

	uinfo->count = 2;
	uinfo->value.integer.min = 0;
2660
	uinfo->value.integer.max = platform_max;
F
Frank Mandarino 已提交
2661 2662 2663 2664 2665 2666 2667
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);

/**
 * snd_soc_get_volsw_2r - double mixer get callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2668
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2669 2670 2671 2672 2673 2674 2675 2676
 *
 * Callback to get the value of a double mixer control that spans 2 registers.
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2677 2678
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
F
Frank Mandarino 已提交
2679
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2680 2681 2682
	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
2683
	int max = mc->max;
2684
	unsigned int mask = (1 << fls(max)) - 1;
2685
	unsigned int invert = mc->invert;
F
Frank Mandarino 已提交
2686 2687 2688 2689 2690 2691 2692

	ucontrol->value.integer.value[0] =
		(snd_soc_read(codec, reg) >> shift) & mask;
	ucontrol->value.integer.value[1] =
		(snd_soc_read(codec, reg2) >> shift) & mask;
	if (invert) {
		ucontrol->value.integer.value[0] =
P
Philipp Zabel 已提交
2693
			max - ucontrol->value.integer.value[0];
F
Frank Mandarino 已提交
2694
		ucontrol->value.integer.value[1] =
P
Philipp Zabel 已提交
2695
			max - ucontrol->value.integer.value[1];
F
Frank Mandarino 已提交
2696 2697 2698 2699 2700 2701 2702 2703 2704
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);

/**
 * snd_soc_put_volsw_2r - double mixer set callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2705
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2706 2707 2708 2709 2710 2711 2712 2713
 *
 * Callback to set the value of a double mixer control that spans 2 registers.
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2714 2715
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
F
Frank Mandarino 已提交
2716
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2717 2718 2719
	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
2720
	int max = mc->max;
2721 2722
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
F
Frank Mandarino 已提交
2723
	int err;
2724
	unsigned int val, val2, val_mask;
F
Frank Mandarino 已提交
2725 2726 2727 2728 2729 2730

	val_mask = mask << shift;
	val = (ucontrol->value.integer.value[0] & mask);
	val2 = (ucontrol->value.integer.value[1] & mask);

	if (invert) {
P
Philipp Zabel 已提交
2731 2732
		val = max - val;
		val2 = max - val2;
F
Frank Mandarino 已提交
2733 2734 2735 2736 2737
	}

	val = val << shift;
	val2 = val2 << shift;

2738
	err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2739
	if (err < 0)
F
Frank Mandarino 已提交
2740 2741
		return err;

2742
	err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
F
Frank Mandarino 已提交
2743 2744 2745 2746
	return err;
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);

2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
/**
 * snd_soc_info_volsw_s8 - signed mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a signed mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
2759 2760
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2761
	int platform_max;
2762
	int min = mc->min;
2763

2764 2765 2766 2767
	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

2768 2769 2770
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
2771
	uinfo->value.integer.max = platform_max - min;
2772 2773 2774 2775 2776 2777 2778
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);

/**
 * snd_soc_get_volsw_s8 - signed mixer get callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2779
 * @ucontrol: control element information
2780 2781 2782 2783 2784 2785 2786 2787
 *
 * Callback to get the value of a signed mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2788 2789
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2790
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2791
	unsigned int reg = mc->reg;
2792
	int min = mc->min;
2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805
	int val = snd_soc_read(codec, reg);

	ucontrol->value.integer.value[0] =
		((signed char)(val & 0xff))-min;
	ucontrol->value.integer.value[1] =
		((signed char)((val >> 8) & 0xff))-min;
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);

/**
 * snd_soc_put_volsw_sgn - signed mixer put callback
 * @kcontrol: mixer control
M
Mark Brown 已提交
2806
 * @ucontrol: control element information
2807 2808 2809 2810 2811 2812 2813 2814
 *
 * Callback to set the value of a signed mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2815 2816
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2817
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2818
	unsigned int reg = mc->reg;
2819
	int min = mc->min;
2820
	unsigned int val;
2821 2822 2823 2824

	val = (ucontrol->value.integer.value[0]+min) & 0xff;
	val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;

2825
	return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2826 2827 2828
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);

2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840
/**
 * snd_soc_limit_volume - Set new limit to an existing volume control.
 *
 * @codec: where to look for the control
 * @name: Name of the control
 * @max: new maximum limit
 *
 * Return 0 for success, else error.
 */
int snd_soc_limit_volume(struct snd_soc_codec *codec,
	const char *name, int max)
{
2841
	struct snd_card *card = codec->card->snd_card;
2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859
	struct snd_kcontrol *kctl;
	struct soc_mixer_control *mc;
	int found = 0;
	int ret = -EINVAL;

	/* Sanity check for name and max */
	if (unlikely(!name || max <= 0))
		return -EINVAL;

	list_for_each_entry(kctl, &card->controls, list) {
		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
			found = 1;
			break;
		}
	}
	if (found) {
		mc = (struct soc_mixer_control *)kctl->private_value;
		if (max <= mc->max) {
2860
			mc->platform_max = max;
2861 2862 2863 2864 2865 2866 2867
			ret = 0;
		}
	}
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_limit_volume);

2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911
/**
 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
 *  mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_info *uinfo)
{
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	int max = mc->max;
	int min = mc->min;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = max-min;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);

/**
 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
 *  mixer get callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	unsigned int mask = (1<<mc->shift)-1;
	int min = mc->min;
	int val = snd_soc_read(codec, mc->reg) & mask;
	int valr = snd_soc_read(codec, mc->rreg) & mask;

2912 2913
	ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
	ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);

/**
 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
 *  mixer put callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	unsigned int mask = (1<<mc->shift)-1;
	int min = mc->min;
	int ret;
	unsigned int val, valr, oval, ovalr;

	val = ((ucontrol->value.integer.value[0]+min) & 0xff);
	val &= mask;
	valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
	valr &= mask;

	oval = snd_soc_read(codec, mc->reg) & mask;
	ovalr = snd_soc_read(codec, mc->rreg) & mask;

	ret = 0;
	if (oval != val) {
		ret = snd_soc_write(codec, mc->reg, val);
		if (ret < 0)
2949
			return ret;
2950 2951 2952 2953
	}
	if (ovalr != valr) {
		ret = snd_soc_write(codec, mc->rreg, valr);
		if (ret < 0)
2954
			return ret;
2955 2956 2957 2958 2959 2960
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);

2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972
/**
 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
 * @dai: DAI
 * @clk_id: DAI specific clock ID
 * @freq: new clock frequency in Hz
 * @dir: new clock direction - input/output.
 *
 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
 */
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
	unsigned int freq, int dir)
{
2973 2974
	if (dai->driver && dai->driver->ops->set_sysclk)
		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2975 2976 2977 2978 2979 2980 2981 2982
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);

/**
 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
 * @dai: DAI
M
Mark Brown 已提交
2983
 * @div_id: DAI specific clock divider ID
2984 2985 2986 2987 2988 2989 2990 2991 2992
 * @div: new clock divisor.
 *
 * Configures the clock dividers. This is used to derive the best DAI bit and
 * frame clocks from the system or master clock. It's best to set the DAI bit
 * and frame clocks as low as possible to save system power.
 */
int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
	int div_id, int div)
{
2993 2994
	if (dai->driver && dai->driver->ops->set_clkdiv)
		return dai->driver->ops->set_clkdiv(dai, div_id, div);
2995 2996 2997 2998 2999 3000 3001 3002 3003
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);

/**
 * snd_soc_dai_set_pll - configure DAI PLL.
 * @dai: DAI
 * @pll_id: DAI specific PLL ID
3004
 * @source: DAI specific source for the PLL
3005 3006 3007 3008 3009
 * @freq_in: PLL input clock frequency in Hz
 * @freq_out: requested PLL output clock frequency in Hz
 *
 * Configures and enables PLL to generate output clock based on input clock.
 */
3010 3011
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
	unsigned int freq_in, unsigned int freq_out)
3012
{
3013 3014
	if (dai->driver && dai->driver->ops->set_pll)
		return dai->driver->ops->set_pll(dai, pll_id, source,
3015
					 freq_in, freq_out);
3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);

/**
 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
 * @dai: DAI
 * @fmt: SND_SOC_DAIFMT_ format value.
 *
 * Configures the DAI hardware format and clocking.
 */
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
3030 3031
	if (dai->driver && dai->driver->ops->set_fmt)
		return dai->driver->ops->set_fmt(dai, fmt);
3032 3033 3034 3035 3036 3037 3038 3039
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);

/**
 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
 * @dai: DAI
3040 3041
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
3042
 * @slots: Number of slots in use.
3043
 * @slot_width: Width in bits for each slot.
3044 3045 3046 3047 3048
 *
 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
 * specific.
 */
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3049
	unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3050
{
3051 3052
	if (dai->driver && dai->driver->ops->set_tdm_slot)
		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3053
				slots, slot_width);
3054 3055 3056 3057 3058
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);

3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074
/**
 * snd_soc_dai_set_channel_map - configure DAI audio channel map
 * @dai: DAI
 * @tx_num: how many TX channels
 * @tx_slot: pointer to an array which imply the TX slot number channel
 *           0~num-1 uses
 * @rx_num: how many RX channels
 * @rx_slot: pointer to an array which imply the RX slot number channel
 *           0~num-1 uses
 *
 * configure the relationship between channel number and TDM slot number.
 */
int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
	unsigned int tx_num, unsigned int *tx_slot,
	unsigned int rx_num, unsigned int *rx_slot)
{
3075 3076
	if (dai->driver && dai->driver->ops->set_channel_map)
		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3077 3078 3079 3080 3081 3082
			rx_num, rx_slot);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);

3083 3084 3085 3086 3087 3088 3089 3090 3091
/**
 * snd_soc_dai_set_tristate - configure DAI system or master clock.
 * @dai: DAI
 * @tristate: tristate enable
 *
 * Tristates the DAI so that others can use it.
 */
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
{
3092 3093
	if (dai->driver && dai->driver->ops->set_tristate)
		return dai->driver->ops->set_tristate(dai, tristate);
3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);

/**
 * snd_soc_dai_digital_mute - configure DAI system or master clock.
 * @dai: DAI
 * @mute: mute enable
 *
 * Mutes the DAI DAC.
 */
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
{
3108 3109
	if (dai->driver && dai->driver->ops->digital_mute)
		return dai->driver->ops->digital_mute(dai, mute);
3110 3111 3112 3113 3114
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);

M
Mark Brown 已提交
3115 3116 3117
/**
 * snd_soc_register_card - Register a card with the ASoC core
 *
M
Mark Brown 已提交
3118
 * @card: Card to register
M
Mark Brown 已提交
3119 3120 3121 3122 3123 3124 3125
 *
 * Note that currently this is an internal only function: it will be
 * exposed to machine drivers after further backporting of ASoC v2
 * registration APIs.
 */
static int snd_soc_register_card(struct snd_soc_card *card)
{
3126 3127
	int i;

M
Mark Brown 已提交
3128 3129 3130
	if (!card->name || !card->dev)
		return -EINVAL;

3131 3132 3133
	card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
			    (card->num_links + card->num_aux_devs),
			    GFP_KERNEL);
3134 3135
	if (card->rtd == NULL)
		return -ENOMEM;
3136
	card->rtd_aux = &card->rtd[card->num_links];
3137 3138 3139 3140

	for (i = 0; i < card->num_links; i++)
		card->rtd[i].dai_link = &card->dai_link[i];

M
Mark Brown 已提交
3141 3142
	INIT_LIST_HEAD(&card->list);
	card->instantiated = 0;
3143
	mutex_init(&card->mutex);
M
Mark Brown 已提交
3144 3145 3146

	mutex_lock(&client_mutex);
	list_add(&card->list, &card_list);
3147
	snd_soc_instantiate_cards();
M
Mark Brown 已提交
3148 3149 3150 3151 3152 3153 3154 3155 3156 3157
	mutex_unlock(&client_mutex);

	dev_dbg(card->dev, "Registered card '%s'\n", card->name);

	return 0;
}

/**
 * snd_soc_unregister_card - Unregister a card with the ASoC core
 *
M
Mark Brown 已提交
3158
 * @card: Card to unregister
M
Mark Brown 已提交
3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
 *
 * Note that currently this is an internal only function: it will be
 * exposed to machine drivers after further backporting of ASoC v2
 * registration APIs.
 */
static int snd_soc_unregister_card(struct snd_soc_card *card)
{
	mutex_lock(&client_mutex);
	list_del(&card->list);
	mutex_unlock(&client_mutex);
	dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);

	return 0;
}

3174 3175 3176 3177
/*
 * Simplify DAI link configuration by removing ".-1" from device names
 * and sanitizing names.
 */
3178
static char *fmt_single_name(struct device *dev, int *id)
3179 3180 3181 3182 3183 3184 3185
{
	char *found, name[NAME_SIZE];
	int id1, id2;

	if (dev_name(dev) == NULL)
		return NULL;

3186
	strlcpy(name, dev_name(dev), NAME_SIZE);
3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204

	/* are we a "%s.%d" name (platform and SPI components) */
	found = strstr(name, dev->driver->name);
	if (found) {
		/* get ID */
		if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {

			/* discard ID from name if ID == -1 */
			if (*id == -1)
				found[strlen(dev->driver->name)] = '\0';
		}

	} else {
		/* I2C component devices are named "bus-addr"  */
		if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
			char tmp[NAME_SIZE];

			/* create unique ID number from I2C addr and bus */
3205
			*id = ((id1 & 0xffff) << 16) + id2;
3206 3207 3208

			/* sanitize component name for DAI link creation */
			snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3209
			strlcpy(name, tmp, NAME_SIZE);
3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232
		} else
			*id = 0;
	}

	return kstrdup(name, GFP_KERNEL);
}

/*
 * Simplify DAI link naming for single devices with multiple DAIs by removing
 * any ".-1" and using the DAI name (instead of device name).
 */
static inline char *fmt_multiple_name(struct device *dev,
		struct snd_soc_dai_driver *dai_drv)
{
	if (dai_drv->name == NULL) {
		printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
				dev_name(dev));
		return NULL;
	}

	return kstrdup(dai_drv->name, GFP_KERNEL);
}

M
Mark Brown 已提交
3233 3234 3235
/**
 * snd_soc_register_dai - Register a DAI with the ASoC core
 *
M
Mark Brown 已提交
3236
 * @dai: DAI to register
M
Mark Brown 已提交
3237
 */
3238 3239
int snd_soc_register_dai(struct device *dev,
		struct snd_soc_dai_driver *dai_drv)
M
Mark Brown 已提交
3240
{
3241 3242 3243
	struct snd_soc_dai *dai;

	dev_dbg(dev, "dai register %s\n", dev_name(dev));
M
Mark Brown 已提交
3244

3245 3246 3247
	dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
	if (dai == NULL)
			return -ENOMEM;
M
Mark Brown 已提交
3248

3249 3250 3251 3252 3253 3254
	/* create DAI component name */
	dai->name = fmt_single_name(dev, &dai->id);
	if (dai->name == NULL) {
		kfree(dai);
		return -ENOMEM;
	}
3255

3256 3257 3258 3259
	dai->dev = dev;
	dai->driver = dai_drv;
	if (!dai->driver->ops)
		dai->driver->ops = &null_dai_ops;
M
Mark Brown 已提交
3260 3261 3262

	mutex_lock(&client_mutex);
	list_add(&dai->list, &dai_list);
3263
	snd_soc_instantiate_cards();
M
Mark Brown 已提交
3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274
	mutex_unlock(&client_mutex);

	pr_debug("Registered DAI '%s'\n", dai->name);

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_register_dai);

/**
 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
 *
M
Mark Brown 已提交
3275
 * @dai: DAI to unregister
M
Mark Brown 已提交
3276
 */
3277
void snd_soc_unregister_dai(struct device *dev)
M
Mark Brown 已提交
3278
{
3279 3280 3281 3282 3283 3284 3285 3286 3287
	struct snd_soc_dai *dai;

	list_for_each_entry(dai, &dai_list, list) {
		if (dev == dai->dev)
			goto found;
	}
	return;

found:
M
Mark Brown 已提交
3288 3289 3290 3291 3292
	mutex_lock(&client_mutex);
	list_del(&dai->list);
	mutex_unlock(&client_mutex);

	pr_debug("Unregistered DAI '%s'\n", dai->name);
3293 3294
	kfree(dai->name);
	kfree(dai);
M
Mark Brown 已提交
3295 3296 3297 3298 3299 3300
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);

/**
 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
 *
M
Mark Brown 已提交
3301 3302
 * @dai: Array of DAIs to register
 * @count: Number of DAIs
M
Mark Brown 已提交
3303
 */
3304 3305
int snd_soc_register_dais(struct device *dev,
		struct snd_soc_dai_driver *dai_drv, size_t count)
M
Mark Brown 已提交
3306
{
3307 3308 3309
	struct snd_soc_dai *dai;
	int i, ret = 0;

3310
	dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
M
Mark Brown 已提交
3311 3312

	for (i = 0; i < count; i++) {
3313 3314

		dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3315 3316 3317 3318
		if (dai == NULL) {
			ret = -ENOMEM;
			goto err;
		}
3319 3320 3321 3322 3323 3324

		/* create DAI component name */
		dai->name = fmt_multiple_name(dev, &dai_drv[i]);
		if (dai->name == NULL) {
			kfree(dai);
			ret = -EINVAL;
M
Mark Brown 已提交
3325
			goto err;
3326 3327 3328 3329
		}

		dai->dev = dev;
		dai->driver = &dai_drv[i];
3330 3331 3332 3333
		if (dai->driver->id)
			dai->id = dai->driver->id;
		else
			dai->id = i;
3334 3335 3336 3337 3338 3339 3340 3341
		if (!dai->driver->ops)
			dai->driver->ops = &null_dai_ops;

		mutex_lock(&client_mutex);
		list_add(&dai->list, &dai_list);
		mutex_unlock(&client_mutex);

		pr_debug("Registered DAI '%s'\n", dai->name);
M
Mark Brown 已提交
3342 3343
	}

3344
	mutex_lock(&client_mutex);
3345
	snd_soc_instantiate_cards();
3346
	mutex_unlock(&client_mutex);
M
Mark Brown 已提交
3347 3348 3349 3350
	return 0;

err:
	for (i--; i >= 0; i--)
3351
		snd_soc_unregister_dai(dev);
M
Mark Brown 已提交
3352 3353 3354 3355 3356 3357 3358 3359

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_register_dais);

/**
 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
 *
M
Mark Brown 已提交
3360 3361
 * @dai: Array of DAIs to unregister
 * @count: Number of DAIs
M
Mark Brown 已提交
3362
 */
3363
void snd_soc_unregister_dais(struct device *dev, size_t count)
M
Mark Brown 已提交
3364 3365 3366 3367
{
	int i;

	for (i = 0; i < count; i++)
3368
		snd_soc_unregister_dai(dev);
M
Mark Brown 已提交
3369 3370 3371
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);

M
Mark Brown 已提交
3372 3373 3374
/**
 * snd_soc_register_platform - Register a platform with the ASoC core
 *
M
Mark Brown 已提交
3375
 * @platform: platform to register
M
Mark Brown 已提交
3376
 */
3377 3378
int snd_soc_register_platform(struct device *dev,
		struct snd_soc_platform_driver *platform_drv)
M
Mark Brown 已提交
3379
{
3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393
	struct snd_soc_platform *platform;

	dev_dbg(dev, "platform register %s\n", dev_name(dev));

	platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
	if (platform == NULL)
			return -ENOMEM;

	/* create platform component name */
	platform->name = fmt_single_name(dev, &platform->id);
	if (platform->name == NULL) {
		kfree(platform);
		return -ENOMEM;
	}
M
Mark Brown 已提交
3394

3395 3396
	platform->dev = dev;
	platform->driver = platform_drv;
M
Mark Brown 已提交
3397 3398 3399

	mutex_lock(&client_mutex);
	list_add(&platform->list, &platform_list);
3400
	snd_soc_instantiate_cards();
M
Mark Brown 已提交
3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411
	mutex_unlock(&client_mutex);

	pr_debug("Registered platform '%s'\n", platform->name);

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_register_platform);

/**
 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
 *
M
Mark Brown 已提交
3412
 * @platform: platform to unregister
M
Mark Brown 已提交
3413
 */
3414
void snd_soc_unregister_platform(struct device *dev)
M
Mark Brown 已提交
3415
{
3416 3417 3418 3419 3420 3421 3422 3423 3424
	struct snd_soc_platform *platform;

	list_for_each_entry(platform, &platform_list, list) {
		if (dev == platform->dev)
			goto found;
	}
	return;

found:
M
Mark Brown 已提交
3425 3426 3427 3428 3429
	mutex_lock(&client_mutex);
	list_del(&platform->list);
	mutex_unlock(&client_mutex);

	pr_debug("Unregistered platform '%s'\n", platform->name);
3430 3431
	kfree(platform->name);
	kfree(platform);
M
Mark Brown 已提交
3432 3433 3434
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);

3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467
static u64 codec_format_map[] = {
	SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
	SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
	SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
	SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
	SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
	SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
	SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
	SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
	SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
	SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
	SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
	SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
	SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
	SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
	SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
	| SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
};

/* Fix up the DAI formats for endianness: codecs don't actually see
 * the endianness of the data but we're using the CPU format
 * definitions which do need to include endianness so we ensure that
 * codec DAIs always have both big and little endian variants set.
 */
static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
		if (stream->formats & codec_format_map[i])
			stream->formats |= codec_format_map[i];
}

M
Mark Brown 已提交
3468 3469 3470
/**
 * snd_soc_register_codec - Register a codec with the ASoC core
 *
M
Mark Brown 已提交
3471
 * @codec: codec to register
M
Mark Brown 已提交
3472
 */
3473
int snd_soc_register_codec(struct device *dev,
3474 3475 3476
			   const struct snd_soc_codec_driver *codec_drv,
			   struct snd_soc_dai_driver *dai_drv,
			   int num_dai)
M
Mark Brown 已提交
3477
{
3478
	size_t reg_size;
3479 3480
	struct snd_soc_codec *codec;
	int ret, i;
3481

3482 3483 3484 3485 3486
	dev_dbg(dev, "codec register %s\n", dev_name(dev));

	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
	if (codec == NULL)
		return -ENOMEM;
M
Mark Brown 已提交
3487

3488 3489 3490 3491 3492 3493 3494
	/* create CODEC component name */
	codec->name = fmt_single_name(dev, &codec->id);
	if (codec->name == NULL) {
		kfree(codec);
		return -ENOMEM;
	}

3495 3496 3497 3498 3499
	if (codec_drv->compress_type)
		codec->compress_type = codec_drv->compress_type;
	else
		codec->compress_type = SND_SOC_FLAT_COMPRESSION;

3500 3501
	codec->write = codec_drv->write;
	codec->read = codec_drv->read;
L
Liam Girdwood 已提交
3502 3503 3504
	codec->dapm.bias_level = SND_SOC_BIAS_OFF;
	codec->dapm.dev = dev;
	codec->dapm.codec = codec;
3505 3506 3507 3508
	codec->dev = dev;
	codec->driver = codec_drv;
	codec->num_dai = num_dai;
	mutex_init(&codec->mutex);
L
Liam Girdwood 已提交
3509

3510 3511
	/* allocate CODEC register cache */
	if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3512 3513 3514 3515 3516 3517 3518
		reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
		/* it is necessary to make a copy of the default register cache
		 * because in the case of using a compression type that requires
		 * the default register cache to be marked as __devinitconst the
		 * kernel might have freed the array by the time we initialize
		 * the cache.
		 */
3519 3520 3521 3522 3523 3524 3525
		if (codec_drv->reg_cache_default) {
			codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
						      reg_size, GFP_KERNEL);
			if (!codec->reg_def_copy) {
				ret = -ENOMEM;
				goto fail;
			}
3526
		}
3527 3528
	}

3529 3530 3531 3532 3533
	for (i = 0; i < num_dai; i++) {
		fixup_codec_formats(&dai_drv[i].playback);
		fixup_codec_formats(&dai_drv[i].capture);
	}

3534 3535 3536 3537
	/* register any DAIs */
	if (num_dai) {
		ret = snd_soc_register_dais(dev, dai_drv, num_dai);
		if (ret < 0)
3538
			goto fail;
3539
	}
3540

M
Mark Brown 已提交
3541 3542 3543 3544 3545 3546 3547
	mutex_lock(&client_mutex);
	list_add(&codec->list, &codec_list);
	snd_soc_instantiate_cards();
	mutex_unlock(&client_mutex);

	pr_debug("Registered codec '%s'\n", codec->name);
	return 0;
3548

3549
fail:
3550 3551
	kfree(codec->reg_def_copy);
	codec->reg_def_copy = NULL;
3552 3553 3554
	kfree(codec->name);
	kfree(codec);
	return ret;
M
Mark Brown 已提交
3555 3556 3557 3558 3559 3560
}
EXPORT_SYMBOL_GPL(snd_soc_register_codec);

/**
 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
 *
M
Mark Brown 已提交
3561
 * @codec: codec to unregister
M
Mark Brown 已提交
3562
 */
3563
void snd_soc_unregister_codec(struct device *dev)
M
Mark Brown 已提交
3564
{
3565 3566 3567 3568 3569 3570 3571 3572 3573 3574
	struct snd_soc_codec *codec;
	int i;

	list_for_each_entry(codec, &codec_list, list) {
		if (dev == codec->dev)
			goto found;
	}
	return;

found:
3575 3576 3577
	if (codec->num_dai)
		for (i = 0; i < codec->num_dai; i++)
			snd_soc_unregister_dai(dev);
3578

M
Mark Brown 已提交
3579 3580 3581 3582 3583
	mutex_lock(&client_mutex);
	list_del(&codec->list);
	mutex_unlock(&client_mutex);

	pr_debug("Unregistered codec '%s'\n", codec->name);
3584

3585
	snd_soc_cache_exit(codec);
3586
	kfree(codec->reg_def_copy);
3587
	kfree(codec->name);
3588
	kfree(codec);
M
Mark Brown 已提交
3589 3590 3591
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);

3592
static int __init snd_soc_init(void)
F
Frank Mandarino 已提交
3593
{
3594
#ifdef CONFIG_DEBUG_FS
3595 3596
	snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
	if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3597 3598
		printk(KERN_WARNING
		       "ASoC: Failed to create debugfs directory\n");
3599
		snd_soc_debugfs_root = NULL;
3600
	}
3601

3602
	if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3603 3604 3605
				 &codec_list_fops))
		pr_warn("ASoC: Failed to create CODEC list debugfs file\n");

3606
	if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
M
Mark Brown 已提交
3607 3608
				 &dai_list_fops))
		pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3609

3610
	if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3611 3612
				 &platform_list_fops))
		pr_warn("ASoC: Failed to create platform list debugfs file\n");
3613 3614
#endif

F
Frank Mandarino 已提交
3615 3616
	return platform_driver_register(&soc_driver);
}
3617
module_init(snd_soc_init);
F
Frank Mandarino 已提交
3618

M
Mark Brown 已提交
3619
static void __exit snd_soc_exit(void)
F
Frank Mandarino 已提交
3620
{
3621
#ifdef CONFIG_DEBUG_FS
3622
	debugfs_remove_recursive(snd_soc_debugfs_root);
3623
#endif
3624
	platform_driver_unregister(&soc_driver);
F
Frank Mandarino 已提交
3625 3626 3627 3628
}
module_exit(snd_soc_exit);

/* Module information */
3629
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
F
Frank Mandarino 已提交
3630 3631
MODULE_DESCRIPTION("ALSA SoC Core");
MODULE_LICENSE("GPL");
3632
MODULE_ALIAS("platform:soc-audio");