soc-core.c 123.7 KB
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/*
 * soc-core.c  --  ALSA SoC Audio Layer
 *
 * Copyright 2005 Wolfson Microelectronics PLC.
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 * Copyright 2005 Openedhand Ltd.
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 * Copyright (C) 2010 Slimlogic Ltd.
 * Copyright (C) 2010 Texas Instruments Inc.
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 *
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 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
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 *         with code, comments and ideas from :-
 *         Richard Purdie <richard@openedhand.com>
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 *
 *  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>
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#include <linux/debugfs.h>
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#include <linux/platform_device.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/ctype.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/gpio.h>
#include <linux/of_gpio.h>
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#include <sound/ac97_codec.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
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#include <sound/soc-dpcm.h>
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#include <sound/initval.h>

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

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#define NAME_SIZE	32

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#ifdef CONFIG_DEBUG_FS
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struct dentry *snd_soc_debugfs_root;
EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
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#endif

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static DEFINE_MUTEX(client_mutex);
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static LIST_HEAD(platform_list);
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static LIST_HEAD(codec_list);
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static LIST_HEAD(component_list);
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/*
 * 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)");

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struct snd_ac97_reset_cfg {
	struct pinctrl *pctl;
	struct pinctrl_state *pstate_reset;
	struct pinctrl_state *pstate_warm_reset;
	struct pinctrl_state *pstate_run;
	int gpio_sdata;
	int gpio_sync;
	int gpio_reset;
};

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/* returns the minimum number of bytes needed to represent
 * a particular given value */
static int min_bytes_needed(unsigned long val)
{
	int c = 0;
	int i;

	for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
		if (val & (1UL << i))
			break;
	c = (sizeof val * 8) - c;
	if (!c || (c % 8))
		c = (c + 8) / 8;
	else
		c /= 8;
	return c;
}

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/* fill buf which is 'len' bytes with a formatted
 * string of the form 'reg: value\n' */
static int format_register_str(struct snd_soc_codec *codec,
			       unsigned int reg, char *buf, size_t len)
{
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	int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
	int regsize = codec->driver->reg_word_size * 2;
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	int ret;
	char tmpbuf[len + 1];
	char regbuf[regsize + 1];

	/* since tmpbuf is allocated on the stack, warn the callers if they
	 * try to abuse this function */
	WARN_ON(len > 63);

	/* +2 for ': ' and + 1 for '\n' */
	if (wordsize + regsize + 2 + 1 != len)
		return -EINVAL;

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	ret = snd_soc_read(codec, reg);
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	if (ret < 0) {
		memset(regbuf, 'X', regsize);
		regbuf[regsize] = '\0';
	} else {
		snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
	}

	/* prepare the buffer */
	snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
	/* copy it back to the caller without the '\0' */
	memcpy(buf, tmpbuf, len);

	return 0;
}

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/* codec register dump */
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static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
				  size_t count, loff_t pos)
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{
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	int i, step = 1;
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	int wordsize, regsize;
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	int len;
	size_t total = 0;
	loff_t p = 0;
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	wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
	regsize = codec->driver->reg_word_size * 2;
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	len = wordsize + regsize + 2 + 1;

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

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	if (codec->driver->reg_cache_step)
		step = codec->driver->reg_cache_step;
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	for (i = 0; i < codec->driver->reg_cache_size; i += step) {
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		/* only support larger than PAGE_SIZE bytes debugfs
		 * entries for the default case */
		if (p >= pos) {
			if (total + len >= count - 1)
				break;
			format_register_str(codec, i, buf + total, len);
			total += len;
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		}
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		p += len;
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	}

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	total = min(total, count - 1);
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	return total;
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}
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static ssize_t codec_reg_show(struct device *dev,
	struct device_attribute *attr, char *buf)
{
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	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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	return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
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}

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

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static ssize_t pmdown_time_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
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	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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	return sprintf(buf, "%ld\n", rtd->pmdown_time);
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}

static ssize_t pmdown_time_set(struct device *dev,
			       struct device_attribute *attr,
			       const char *buf, size_t count)
{
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	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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	int ret;
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	ret = kstrtol(buf, 10, &rtd->pmdown_time);
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	if (ret)
		return ret;
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	return count;
}

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

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#ifdef CONFIG_DEBUG_FS
static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
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				   size_t count, loff_t *ppos)
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{
	ssize_t ret;
	struct snd_soc_codec *codec = file->private_data;
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	char *buf;

	if (*ppos < 0 || !count)
		return -EINVAL;

	buf = kmalloc(count, GFP_KERNEL);
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	if (!buf)
		return -ENOMEM;
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	ret = soc_codec_reg_show(codec, buf, count, *ppos);
	if (ret >= 0) {
		if (copy_to_user(user_buf, buf, ret)) {
			kfree(buf);
			return -EFAULT;
		}
		*ppos += ret;
	}

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	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];
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	size_t buf_size;
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	char *start = buf;
	unsigned long reg, value;
	struct snd_soc_codec *codec = file->private_data;
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	int ret;
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	buf_size = min(count, (sizeof(buf)-1));
	if (copy_from_user(buf, user_buf, buf_size))
		return -EFAULT;
	buf[buf_size] = 0;

	while (*start == ' ')
		start++;
	reg = simple_strtoul(start, &start, 16);
	while (*start == ' ')
		start++;
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	ret = kstrtoul(start, 16, &value);
	if (ret)
		return ret;
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	/* Userspace has been fiddling around behind the kernel's back */
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	add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
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	snd_soc_write(codec, reg, value);
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	return buf_size;
}

static const struct file_operations codec_reg_fops = {
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	.open = simple_open,
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	.read = codec_reg_read_file,
	.write = codec_reg_write_file,
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	.llseek = default_llseek,
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};

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static struct dentry *soc_debugfs_create_dir(struct dentry *parent,
	const char *fmt, ...)
{
	struct dentry *de;
	va_list ap;
	char *s;

	va_start(ap, fmt);
	s = kvasprintf(GFP_KERNEL, fmt, ap);
	va_end(ap);

	if (!s)
		return NULL;

	de = debugfs_create_dir(s, parent);
	kfree(s);

	return de;
}

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static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
{
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	struct dentry *debugfs_card_root = codec->component.card->debugfs_card_root;
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	codec->debugfs_codec_root = soc_debugfs_create_dir(debugfs_card_root,
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						"codec:%s",
						codec->component.name);
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	if (!codec->debugfs_codec_root) {
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		dev_warn(codec->dev,
			"ASoC: Failed to create codec debugfs directory\n");
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		return;
	}

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	debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
			    &codec->cache_sync);
	debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
			    &codec->cache_only);

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

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

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static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
{
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	struct dentry *debugfs_card_root = platform->component.card->debugfs_card_root;
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	platform->debugfs_platform_root = soc_debugfs_create_dir(debugfs_card_root,
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						"platform:%s",
						platform->component.name);
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	if (!platform->debugfs_platform_root) {
		dev_warn(platform->dev,
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			"ASoC: Failed to create platform debugfs directory\n");
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		return;
	}

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	snd_soc_dapm_debugfs_init(&platform->component.dapm,
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		platform->debugfs_platform_root);
}

static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
{
	debugfs_remove_recursive(platform->debugfs_platform_root);
}

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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);
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	ssize_t len, ret = 0;
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	struct snd_soc_codec *codec;

	if (!buf)
		return -ENOMEM;

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	list_for_each_entry(codec, &codec_list, list) {
		len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
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			       codec->component.name);
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		if (len >= 0)
			ret += len;
		if (ret > PAGE_SIZE) {
			ret = PAGE_SIZE;
			break;
		}
	}
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	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 */
};

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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);
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	ssize_t len, ret = 0;
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	struct snd_soc_component *component;
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	struct snd_soc_dai *dai;

	if (!buf)
		return -ENOMEM;

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	list_for_each_entry(component, &component_list, list) {
		list_for_each_entry(dai, &component->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;
			}
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		}
	}
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	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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	kfree(buf);

	return ret;
}

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

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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);
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	ssize_t len, ret = 0;
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	struct snd_soc_platform *platform;

	if (!buf)
		return -ENOMEM;

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	list_for_each_entry(platform, &platform_list, list) {
		len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
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			       platform->component.name);
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		if (len >= 0)
			ret += len;
		if (ret > PAGE_SIZE) {
			ret = PAGE_SIZE;
			break;
		}
	}
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	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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	kfree(buf);

	return ret;
}

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

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static void soc_init_card_debugfs(struct snd_soc_card *card)
{
	card->debugfs_card_root = debugfs_create_dir(card->name,
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						     snd_soc_debugfs_root);
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	if (!card->debugfs_card_root) {
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		dev_warn(card->dev,
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			 "ASoC: Failed to create card debugfs directory\n");
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		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,
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		       "ASoC: Failed to create pop time debugfs file\n");
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}

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

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#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)
{
}
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static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
{
}

static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
{
}

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

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

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struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
		const char *dai_link, int stream)
{
	int i;

	for (i = 0; i < card->num_links; i++) {
		if (card->rtd[i].dai_link->no_pcm &&
			!strcmp(card->rtd[i].dai_link->name, dai_link))
			return card->rtd[i].pcm->streams[stream].substream;
	}
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	dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
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	return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);

struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
		const char *dai_link)
{
	int i;

	for (i = 0; i < card->num_links; i++) {
		if (!strcmp(card->rtd[i].dai_link->name, dai_link))
			return &card->rtd[i];
	}
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	dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
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	return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);

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#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;
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	codec->ac97->dev.parent = codec->component.card->dev;
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	codec->ac97->dev.release = soc_ac97_device_release;

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	dev_set_name(&codec->ac97->dev, "%d-%d:%s",
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		     codec->component.card->snd_card->number, 0,
		     codec->component.name);
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	err = device_register(&codec->ac97->dev);
	if (err < 0) {
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		dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
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		codec->ac97->dev.bus = NULL;
		return err;
	}
	return 0;
}
#endif

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static void codec2codec_close_delayed_work(struct work_struct *work)
{
	/* Currently nothing to do for c2c links
	 * Since c2c links are internal nodes in the DAPM graph and
	 * don't interface with the outside world or application layer
	 * we don't have to do any special handling on close.
	 */
}

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#ifdef CONFIG_PM_SLEEP
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/* powers down audio subsystem for suspend */
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int snd_soc_suspend(struct device *dev)
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{
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	struct snd_soc_card *card = dev_get_drvdata(dev);
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	struct snd_soc_codec *codec;
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	int i, j;
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	/* If the initialization of this soc device failed, there is no codec
	 * associated with it. Just bail out in this case.
	 */
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	if (list_empty(&card->codec_dev_list))
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		return 0;

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	/* Due to the resume being scheduled into a workqueue we could
	* suspend before that's finished - wait for it to complete.
	 */
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	snd_power_lock(card->snd_card);
	snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
	snd_power_unlock(card->snd_card);
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	/* we're going to block userspace touching us until resume completes */
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	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
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	/* mute any active DACs */
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	for (i = 0; i < card->num_rtd; i++) {
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		if (card->rtd[i].dai_link->ignore_suspend)
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			continue;

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		for (j = 0; j < card->rtd[i].num_codecs; j++) {
			struct snd_soc_dai *dai = card->rtd[i].codec_dais[j];
			struct snd_soc_dai_driver *drv = dai->driver;

			if (drv->ops->digital_mute && dai->playback_active)
				drv->ops->digital_mute(dai, 1);
		}
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	}

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

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		snd_pcm_suspend_all(card->rtd[i].pcm);
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	}
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	if (card->suspend_pre)
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		card->suspend_pre(card);
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	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;
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		if (card->rtd[i].dai_link->ignore_suspend)
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			continue;

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		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;
		}
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	}

	/* close any waiting streams and save state */
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	for (i = 0; i < card->num_rtd; i++) {
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		struct snd_soc_dai **codec_dais = card->rtd[i].codec_dais;
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		flush_delayed_work(&card->rtd[i].delayed_work);
643 644 645 646
		for (j = 0; j < card->rtd[i].num_codecs; j++) {
			codec_dais[j]->codec->dapm.suspend_bias_level =
					codec_dais[j]->codec->dapm.bias_level;
		}
647
	}
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648

649
	for (i = 0; i < card->num_rtd; i++) {
650

651
		if (card->rtd[i].dai_link->ignore_suspend)
652 653
			continue;

654 655 656
		snd_soc_dapm_stream_event(&card->rtd[i],
					  SNDRV_PCM_STREAM_PLAYBACK,
					  SND_SOC_DAPM_STREAM_SUSPEND);
657

658 659 660
		snd_soc_dapm_stream_event(&card->rtd[i],
					  SNDRV_PCM_STREAM_CAPTURE,
					  SND_SOC_DAPM_STREAM_SUSPEND);
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661 662
	}

663 664 665 666
	/* Recheck all analogue paths too */
	dapm_mark_io_dirty(&card->dapm);
	snd_soc_dapm_sync(&card->dapm);

667
	/* suspend all CODECs */
668
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
669 670 671
		/* 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) {
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672
			switch (codec->dapm.bias_level) {
673
			case SND_SOC_BIAS_STANDBY:
674 675 676 677 678 679 680 681
				/*
				 * If the CODEC is capable of idle
				 * bias off then being in STANDBY
				 * means it's doing something,
				 * otherwise fall through.
				 */
				if (codec->dapm.idle_bias_off) {
					dev_dbg(codec->dev,
682
						"ASoC: idle_bias_off CODEC on over suspend\n");
683 684
					break;
				}
685
			case SND_SOC_BIAS_OFF:
686
				codec->driver->suspend(codec);
687
				codec->suspended = 1;
688
				codec->cache_sync = 1;
689 690
				if (codec->component.regmap)
					regcache_mark_dirty(codec->component.regmap);
691 692
				/* deactivate pins to sleep state */
				pinctrl_pm_select_sleep_state(codec->dev);
693 694
				break;
			default:
695 696
				dev_dbg(codec->dev,
					"ASoC: CODEC is on over suspend\n");
697 698
				break;
			}
699 700
		}
	}
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701

702 703
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
704

705
		if (card->rtd[i].dai_link->ignore_suspend)
706 707
			continue;

708 709
		if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
			cpu_dai->driver->suspend(cpu_dai);
710 711 712

		/* deactivate pins to sleep state */
		pinctrl_pm_select_sleep_state(cpu_dai->dev);
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713 714
	}

715
	if (card->suspend_post)
716
		card->suspend_post(card);
F
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717 718 719

	return 0;
}
720
EXPORT_SYMBOL_GPL(snd_soc_suspend);
F
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721

722 723 724 725
/* 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
726
{
727 728
	struct snd_soc_card *card =
			container_of(work, struct snd_soc_card, deferred_resume_work);
729
	struct snd_soc_codec *codec;
730
	int i, j;
F
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731

732 733 734 735
	/* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
	 * so userspace apps are blocked from touching us
	 */

736
	dev_dbg(card->dev, "ASoC: starting resume work\n");
737

738
	/* Bring us up into D2 so that DAPM starts enabling things */
739
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
740

741
	if (card->resume_pre)
742
		card->resume_pre(card);
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Frank Mandarino 已提交
743

744 745 746
	/* resume AC97 DAIs */
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
747

748
		if (card->rtd[i].dai_link->ignore_suspend)
749 750
			continue;

751 752 753 754
		if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
			cpu_dai->driver->resume(cpu_dai);
	}

755
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
756 757 758 759 760
		/* 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) {
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761
			switch (codec->dapm.bias_level) {
762 763 764 765 766 767
			case SND_SOC_BIAS_STANDBY:
			case SND_SOC_BIAS_OFF:
				codec->driver->resume(codec);
				codec->suspended = 0;
				break;
			default:
768 769
				dev_dbg(codec->dev,
					"ASoC: CODEC was on over suspend\n");
770 771
				break;
			}
772 773
		}
	}
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774

775
	for (i = 0; i < card->num_rtd; i++) {
776

777
		if (card->rtd[i].dai_link->ignore_suspend)
778 779
			continue;

780
		snd_soc_dapm_stream_event(&card->rtd[i],
781
					  SNDRV_PCM_STREAM_PLAYBACK,
782
					  SND_SOC_DAPM_STREAM_RESUME);
783

784
		snd_soc_dapm_stream_event(&card->rtd[i],
785
					  SNDRV_PCM_STREAM_CAPTURE,
786
					  SND_SOC_DAPM_STREAM_RESUME);
F
Frank Mandarino 已提交
787 788
	}

789
	/* unmute any active DACs */
790
	for (i = 0; i < card->num_rtd; i++) {
791

792
		if (card->rtd[i].dai_link->ignore_suspend)
793 794
			continue;

795 796 797 798 799 800 801
		for (j = 0; j < card->rtd[i].num_codecs; j++) {
			struct snd_soc_dai *dai = card->rtd[i].codec_dais[j];
			struct snd_soc_dai_driver *drv = dai->driver;

			if (drv->ops->digital_mute && dai->playback_active)
				drv->ops->digital_mute(dai, 0);
		}
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802 803
	}

804 805 806
	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;
807

808
		if (card->rtd[i].dai_link->ignore_suspend)
809 810
			continue;

811 812 813 814 815 816
		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;
		}
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817 818
	}

819
	if (card->resume_post)
820
		card->resume_post(card);
F
Frank Mandarino 已提交
821

822
	dev_dbg(card->dev, "ASoC: resume work completed\n");
823 824

	/* userspace can access us now we are back as we were before */
825
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
826 827 828 829

	/* Recheck all analogue paths too */
	dapm_mark_io_dirty(&card->dapm);
	snd_soc_dapm_sync(&card->dapm);
830 831 832
}

/* powers up audio subsystem after a suspend */
833
int snd_soc_resume(struct device *dev)
834
{
835
	struct snd_soc_card *card = dev_get_drvdata(dev);
836
	int i, ac97_control = 0;
837

838 839 840 841 842 843
	/* If the initialization of this soc device failed, there is no codec
	 * associated with it. Just bail out in this case.
	 */
	if (list_empty(&card->codec_dev_list))
		return 0;

844 845
	/* activate pins from sleep state */
	for (i = 0; i < card->num_rtd; i++) {
846 847 848 849 850
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
		struct snd_soc_dai **codec_dais = rtd->codec_dais;
		struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
		int j;

851 852
		if (cpu_dai->active)
			pinctrl_pm_select_default_state(cpu_dai->dev);
853 854 855 856 857 858

		for (j = 0; j < rtd->num_codecs; j++) {
			struct snd_soc_dai *codec_dai = codec_dais[j];
			if (codec_dai->active)
				pinctrl_pm_select_default_state(codec_dai->dev);
		}
859 860
	}

861 862 863 864 865
	/* 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.
	 */
866 867
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
868 869 870
		ac97_control |= cpu_dai->driver->ac97_control;
	}
	if (ac97_control) {
871
		dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
872 873
		soc_resume_deferred(&card->deferred_resume_work);
	} else {
874
		dev_dbg(dev, "ASoC: Scheduling resume work\n");
875
		if (!schedule_work(&card->deferred_resume_work))
876
			dev_err(dev, "ASoC: resume work item may be lost\n");
877
	}
878

F
Frank Mandarino 已提交
879 880
	return 0;
}
881
EXPORT_SYMBOL_GPL(snd_soc_resume);
F
Frank Mandarino 已提交
882
#else
883 884
#define snd_soc_suspend NULL
#define snd_soc_resume NULL
F
Frank Mandarino 已提交
885 886
#endif

887
static const struct snd_soc_dai_ops null_dai_ops = {
888 889
};

890 891 892
static struct snd_soc_codec *soc_find_codec(
					const struct device_node *codec_of_node,
					const char *codec_name)
893 894 895 896 897 898 899 900
{
	struct snd_soc_codec *codec;

	list_for_each_entry(codec, &codec_list, list) {
		if (codec_of_node) {
			if (codec->dev->of_node != codec_of_node)
				continue;
		} else {
901
			if (strcmp(codec->component.name, codec_name))
902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
				continue;
		}

		return codec;
	}

	return NULL;
}

static struct snd_soc_dai *soc_find_codec_dai(struct snd_soc_codec *codec,
					      const char *codec_dai_name)
{
	struct snd_soc_dai *codec_dai;

	list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
		if (!strcmp(codec_dai->name, codec_dai_name)) {
			return codec_dai;
		}
	}

	return NULL;
}

925
static int soc_bind_dai_link(struct snd_soc_card *card, int num)
F
Frank Mandarino 已提交
926
{
927 928
	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
929
	struct snd_soc_component *component;
930 931
	struct snd_soc_dai_link_component *codecs = dai_link->codecs;
	struct snd_soc_dai **codec_dais = rtd->codec_dais;
932
	struct snd_soc_platform *platform;
933
	struct snd_soc_dai *cpu_dai;
934
	const char *platform_name;
935
	int i;
936

937
	dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
938

939
	/* Find CPU DAI from registered DAIs*/
940
	list_for_each_entry(component, &component_list, list) {
941
		if (dai_link->cpu_of_node &&
942
			component->dev->of_node != dai_link->cpu_of_node)
943 944
			continue;
		if (dai_link->cpu_name &&
945
			strcmp(dev_name(component->dev), dai_link->cpu_name))
946
			continue;
947 948 949 950
		list_for_each_entry(cpu_dai, &component->dai_list, list) {
			if (dai_link->cpu_dai_name &&
				strcmp(cpu_dai->name, dai_link->cpu_dai_name))
				continue;
951

952 953
			rtd->cpu_dai = cpu_dai;
		}
954
	}
955

956
	if (!rtd->cpu_dai) {
957
		dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
958 959
			dai_link->cpu_dai_name);
		return -EPROBE_DEFER;
960 961
	}

962
	rtd->num_codecs = dai_link->num_codecs;
963

964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
	/* Find CODEC from registered CODECs */
	for (i = 0; i < rtd->num_codecs; i++) {
		struct snd_soc_codec *codec;
		codec = soc_find_codec(codecs[i].of_node, codecs[i].name);
		if (!codec) {
			dev_err(card->dev, "ASoC: CODEC %s not registered\n",
				codecs[i].name);
			return -EPROBE_DEFER;
		}

		codec_dais[i] = soc_find_codec_dai(codec, codecs[i].dai_name);
		if (!codec_dais[i]) {
			dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
				codecs[i].dai_name);
			return -EPROBE_DEFER;
		}
980 981
	}

982 983 984 985
	/* Single codec links expect codec and codec_dai in runtime data */
	rtd->codec_dai = codec_dais[0];
	rtd->codec = rtd->codec_dai->codec;

986 987
	/* if there's no platform we match on the empty platform */
	platform_name = dai_link->platform_name;
988
	if (!platform_name && !dai_link->platform_of_node)
989 990
		platform_name = "snd-soc-dummy";

991
	/* find one from the set of registered platforms */
992
	list_for_each_entry(platform, &platform_list, list) {
993 994 995 996 997
		if (dai_link->platform_of_node) {
			if (platform->dev->of_node !=
			    dai_link->platform_of_node)
				continue;
		} else {
998
			if (strcmp(platform->component.name, platform_name))
999 1000
				continue;
		}
1001 1002

		rtd->platform = platform;
1003
	}
1004
	if (!rtd->platform) {
1005
		dev_err(card->dev, "ASoC: platform %s not registered\n",
1006
			dai_link->platform_name);
1007
		return -EPROBE_DEFER;
1008
	}
1009 1010 1011 1012

	card->num_rtd++;

	return 0;
1013 1014
}

1015 1016 1017 1018 1019 1020 1021
static int soc_remove_platform(struct snd_soc_platform *platform)
{
	int ret;

	if (platform->driver->remove) {
		ret = platform->driver->remove(platform);
		if (ret < 0)
1022 1023
			dev_err(platform->dev, "ASoC: failed to remove %d\n",
				ret);
1024 1025 1026
	}

	/* Make sure all DAPM widgets are freed */
1027
	snd_soc_dapm_free(&platform->component.dapm);
1028 1029 1030 1031 1032 1033 1034 1035

	soc_cleanup_platform_debugfs(platform);
	platform->probed = 0;
	module_put(platform->dev->driver->owner);

	return 0;
}

1036 1037 1038 1039 1040 1041 1042
static void soc_remove_codec(struct snd_soc_codec *codec)
{
	int err;

	if (codec->driver->remove) {
		err = codec->driver->remove(codec);
		if (err < 0)
1043
			dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
	}

	/* 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);
}

1055
static void soc_remove_codec_dai(struct snd_soc_dai *codec_dai, int order)
1056 1057 1058
{
	int err;

1059 1060
	if (codec_dai && codec_dai->probed &&
			codec_dai->driver->remove_order == order) {
1061 1062 1063
		if (codec_dai->driver->remove) {
			err = codec_dai->driver->remove(codec_dai);
			if (err < 0)
1064 1065 1066
				dev_err(codec_dai->dev,
					"ASoC: failed to remove %s: %d\n",
					codec_dai->name, err);
1067
		}
1068 1069
		codec_dai->probed = 0;
	}
1070 1071 1072 1073 1074
}

static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1075 1076
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int i, err;
1077 1078 1079 1080 1081 1082 1083 1084 1085 1086

	/* unregister the rtd device */
	if (rtd->dev_registered) {
		device_remove_file(rtd->dev, &dev_attr_pmdown_time);
		device_remove_file(rtd->dev, &dev_attr_codec_reg);
		device_unregister(rtd->dev);
		rtd->dev_registered = 0;
	}

	/* remove the CODEC DAI */
1087 1088
	for (i = 0; i < rtd->num_codecs; i++)
		soc_remove_codec_dai(rtd->codec_dais[i], order);
1089

1090
	/* remove the cpu_dai */
1091 1092
	if (cpu_dai && cpu_dai->probed &&
			cpu_dai->driver->remove_order == order) {
1093 1094 1095
		if (cpu_dai->driver->remove) {
			err = cpu_dai->driver->remove(cpu_dai);
			if (err < 0)
1096 1097 1098
				dev_err(cpu_dai->dev,
					"ASoC: failed to remove %s: %d\n",
					cpu_dai->name, err);
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Frank Mandarino 已提交
1099
		}
1100
		cpu_dai->probed = 0;
1101
		if (!cpu_dai->codec)
1102
			module_put(cpu_dai->dev->driver->owner);
F
Frank Mandarino 已提交
1103
	}
1104
}
F
Frank Mandarino 已提交
1105

1106 1107 1108 1109 1110 1111 1112
static void soc_remove_link_components(struct snd_soc_card *card, int num,
				       int order)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_platform *platform = rtd->platform;
	struct snd_soc_codec *codec;
1113
	int i;
1114 1115 1116 1117 1118 1119 1120 1121

	/* remove the platform */
	if (platform && platform->probed &&
	    platform->driver->remove_order == order) {
		soc_remove_platform(platform);
	}

	/* remove the CODEC-side CODEC */
1122 1123
	for (i = 0; i < rtd->num_codecs; i++) {
		codec = rtd->codec_dais[i]->codec;
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
		if (codec && codec->probed &&
		    codec->driver->remove_order == order)
			soc_remove_codec(codec);
	}

	/* remove any CPU-side CODEC */
	if (cpu_dai) {
		codec = cpu_dai->codec;
		if (codec && codec->probed &&
		    codec->driver->remove_order == order)
			soc_remove_codec(codec);
	}
}

1138 1139
static void soc_remove_dai_links(struct snd_soc_card *card)
{
1140
	int dai, order;
1141

1142 1143 1144
	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (dai = 0; dai < card->num_rtd; dai++)
1145 1146 1147 1148 1149 1150 1151
			soc_remove_link_dais(card, dai, order);
	}

	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (dai = 0; dai < card->num_rtd; dai++)
			soc_remove_link_components(card, dai, order);
1152
	}
1153

1154 1155 1156
	card->num_rtd = 0;
}

1157
static void soc_set_name_prefix(struct snd_soc_card *card,
1158
				struct snd_soc_component *component)
1159 1160 1161
{
	int i;

1162
	if (card->codec_conf == NULL)
1163 1164
		return;

1165 1166
	for (i = 0; i < card->num_configs; i++) {
		struct snd_soc_codec_conf *map = &card->codec_conf[i];
1167
		if (map->of_node && component->dev->of_node != map->of_node)
1168
			continue;
1169
		if (map->dev_name && strcmp(component->name, map->dev_name))
1170
			continue;
1171
		component->name_prefix = map->name_prefix;
1172
		break;
1173 1174 1175
	}
}

1176 1177 1178 1179
static int soc_probe_codec(struct snd_soc_card *card,
			   struct snd_soc_codec *codec)
{
	int ret = 0;
1180
	const struct snd_soc_codec_driver *driver = codec->driver;
1181
	struct snd_soc_dai *dai;
1182

1183
	codec->component.card = card;
1184
	codec->dapm.card = card;
1185
	soc_set_name_prefix(card, &codec->component);
1186

1187 1188 1189
	if (!try_module_get(codec->dev->driver->owner))
		return -ENODEV;

1190 1191
	soc_init_codec_debugfs(codec);

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
	if (driver->dapm_widgets) {
		ret = snd_soc_dapm_new_controls(&codec->dapm,
						driver->dapm_widgets,
					 	driver->num_dapm_widgets);

		if (ret != 0) {
			dev_err(codec->dev,
				"Failed to create new controls %d\n", ret);
			goto err_probe;
		}
	}
1203

1204
	/* Create DAPM widgets for each DAI stream */
1205 1206 1207 1208 1209 1210 1211 1212 1213
	list_for_each_entry(dai, &codec->component.dai_list, list) {
		ret = snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);

		if (ret != 0) {
			dev_err(codec->dev,
				"Failed to create DAI widgets %d\n", ret);
			goto err_probe;
		}
	}
1214

1215 1216
	codec->dapm.idle_bias_off = driver->idle_bias_off;

1217 1218
	if (driver->probe) {
		ret = driver->probe(codec);
1219 1220
		if (ret < 0) {
			dev_err(codec->dev,
1221
				"ASoC: failed to probe CODEC %d\n", ret);
1222
			goto err_probe;
1223
		}
1224 1225
		WARN(codec->dapm.idle_bias_off &&
			codec->dapm.bias_level != SND_SOC_BIAS_OFF,
1226
			"codec %s can not start from non-off bias with idle_bias_off==1\n",
1227
			codec->component.name);
1228 1229
	}

1230
	if (driver->controls)
1231
		snd_soc_add_codec_controls(codec, driver->controls,
1232
				     driver->num_controls);
1233 1234 1235 1236
	if (driver->dapm_routes)
		snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
					driver->num_dapm_routes);

1237 1238 1239
	/* mark codec as probed and add to card codec list */
	codec->probed = 1;
	list_add(&codec->card_list, &card->codec_dev_list);
1240
	list_add(&codec->dapm.list, &card->dapm_list);
1241

1242 1243 1244
	return 0;

err_probe:
1245
	soc_cleanup_codec_debugfs(codec);
1246 1247
	module_put(codec->dev->driver->owner);

1248 1249 1250
	return ret;
}

1251 1252 1253 1254 1255
static int soc_probe_platform(struct snd_soc_card *card,
			   struct snd_soc_platform *platform)
{
	int ret = 0;
	const struct snd_soc_platform_driver *driver = platform->driver;
1256
	struct snd_soc_component *component;
1257
	struct snd_soc_dai *dai;
1258

1259
	platform->component.card = card;
1260
	platform->component.dapm.card = card;
1261 1262 1263 1264

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

1265 1266
	soc_init_platform_debugfs(platform);

1267
	if (driver->dapm_widgets)
1268
		snd_soc_dapm_new_controls(&platform->component.dapm,
1269 1270
			driver->dapm_widgets, driver->num_dapm_widgets);

1271
	/* Create DAPM widgets for each DAI stream */
1272 1273
	list_for_each_entry(component, &component_list, list) {
		if (component->dev != platform->dev)
1274
			continue;
1275
		list_for_each_entry(dai, &component->dai_list, list)
1276 1277
			snd_soc_dapm_new_dai_widgets(&platform->component.dapm,
				dai);
1278 1279
	}

1280
	platform->component.dapm.idle_bias_off = 1;
1281

1282 1283 1284 1285
	if (driver->probe) {
		ret = driver->probe(platform);
		if (ret < 0) {
			dev_err(platform->dev,
1286
				"ASoC: failed to probe platform %d\n", ret);
1287 1288 1289 1290
			goto err_probe;
		}
	}

1291 1292 1293 1294
	if (driver->controls)
		snd_soc_add_platform_controls(platform, driver->controls,
				     driver->num_controls);
	if (driver->dapm_routes)
1295 1296
		snd_soc_dapm_add_routes(&platform->component.dapm,
			driver->dapm_routes, driver->num_dapm_routes);
1297

1298 1299
	/* mark platform as probed and add to card platform list */
	platform->probed = 1;
1300
	list_add(&platform->component.dapm.list, &card->dapm_list);
1301 1302 1303 1304

	return 0;

err_probe:
1305
	soc_cleanup_platform_debugfs(platform);
1306 1307 1308 1309 1310
	module_put(platform->dev->driver->owner);

	return ret;
}

1311 1312 1313 1314
static void rtd_release(struct device *dev)
{
	kfree(dev);
}
1315

1316 1317
static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
	const char *name)
1318
{
1319 1320 1321
	int ret = 0;

	/* register the rtd device */
1322 1323 1324 1325
	rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
	if (!rtd->dev)
		return -ENOMEM;
	device_initialize(rtd->dev);
1326
	rtd->dev->parent = rtd->card->dev;
1327 1328 1329
	rtd->dev->release = rtd_release;
	rtd->dev->init_name = name;
	dev_set_drvdata(rtd->dev, rtd);
L
Liam Girdwood 已提交
1330
	mutex_init(&rtd->pcm_mutex);
1331 1332 1333 1334
	INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
	INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
	INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
	INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1335
	ret = device_add(rtd->dev);
1336
	if (ret < 0) {
1337 1338
		/* calling put_device() here to free the rtd->dev */
		put_device(rtd->dev);
1339
		dev_err(rtd->card->dev,
1340
			"ASoC: failed to register runtime device: %d\n", ret);
1341 1342 1343 1344 1345
		return ret;
	}
	rtd->dev_registered = 1;

	/* add DAPM sysfs entries for this codec */
1346
	ret = snd_soc_dapm_sys_add(rtd->dev);
1347
	if (ret < 0)
1348
		dev_err(rtd->dev,
1349
			"ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
1350 1351

	/* add codec sysfs entries */
1352
	ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1353
	if (ret < 0)
1354
		dev_err(rtd->dev,
1355
			"ASoC: failed to add codec sysfs files: %d\n", ret);
1356 1357 1358 1359

	return 0;
}

1360 1361 1362 1363 1364 1365
static int soc_probe_link_components(struct snd_soc_card *card, int num,
				     int order)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_platform *platform = rtd->platform;
1366
	int i, ret;
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376

	/* probe the CPU-side component, if it is a CODEC */
	if (cpu_dai->codec &&
	    !cpu_dai->codec->probed &&
	    cpu_dai->codec->driver->probe_order == order) {
		ret = soc_probe_codec(card, cpu_dai->codec);
		if (ret < 0)
			return ret;
	}

1377 1378 1379 1380 1381 1382 1383 1384
	/* probe the CODEC-side components */
	for (i = 0; i < rtd->num_codecs; i++) {
		if (!rtd->codec_dais[i]->codec->probed &&
		    rtd->codec_dais[i]->codec->driver->probe_order == order) {
			ret = soc_probe_codec(card, rtd->codec_dais[i]->codec);
			if (ret < 0)
				return ret;
		}
1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
	}

	/* probe the platform */
	if (!platform->probed &&
	    platform->driver->probe_order == order) {
		ret = soc_probe_platform(card, platform);
		if (ret < 0)
			return ret;
	}

	return 0;
}

1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421
static int soc_probe_codec_dai(struct snd_soc_card *card,
			       struct snd_soc_dai *codec_dai,
			       int order)
{
	int ret;

	if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
		if (codec_dai->driver->probe) {
			ret = codec_dai->driver->probe(codec_dai);
			if (ret < 0) {
				dev_err(codec_dai->dev,
					"ASoC: failed to probe CODEC DAI %s: %d\n",
					codec_dai->name, ret);
				return ret;
			}
		}

		/* mark codec_dai as probed and add to card dai list */
		codec_dai->probed = 1;
	}

	return 0;
}

1422 1423
static int soc_link_dai_widgets(struct snd_soc_card *card,
				struct snd_soc_dai_link *dai_link,
1424
				struct snd_soc_pcm_runtime *rtd)
1425
{
1426 1427
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
1428 1429 1430
	struct snd_soc_dapm_widget *play_w, *capture_w;
	int ret;

1431 1432 1433
	if (rtd->num_codecs > 1)
		dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");

1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461
	/* link the DAI widgets */
	play_w = codec_dai->playback_widget;
	capture_w = cpu_dai->capture_widget;
	if (play_w && capture_w) {
		ret = snd_soc_dapm_new_pcm(card, dai_link->params,
					   capture_w, play_w);
		if (ret != 0) {
			dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
				play_w->name, capture_w->name, ret);
			return ret;
		}
	}

	play_w = cpu_dai->playback_widget;
	capture_w = codec_dai->capture_widget;
	if (play_w && capture_w) {
		ret = snd_soc_dapm_new_pcm(card, dai_link->params,
					   capture_w, play_w);
		if (ret != 0) {
			dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
				play_w->name, capture_w->name, ret);
			return ret;
		}
	}

	return 0;
}

1462
static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1463 1464 1465 1466
{
	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
	struct snd_soc_platform *platform = rtd->platform;
1467
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1468
	int i, ret;
1469

1470
	dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1471
			card->name, num, order);
1472 1473 1474 1475

	/* config components */
	cpu_dai->platform = platform;
	cpu_dai->card = card;
1476 1477
	for (i = 0; i < rtd->num_codecs; i++)
		rtd->codec_dais[i]->card = card;
1478 1479 1480 1481 1482

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

	/* probe the cpu_dai */
1483 1484
	if (!cpu_dai->probed &&
			cpu_dai->driver->probe_order == order) {
1485 1486 1487 1488
		if (!cpu_dai->codec) {
			if (!try_module_get(cpu_dai->dev->driver->owner))
				return -ENODEV;
		}
1489

1490 1491 1492
		if (cpu_dai->driver->probe) {
			ret = cpu_dai->driver->probe(cpu_dai);
			if (ret < 0) {
1493 1494 1495
				dev_err(cpu_dai->dev,
					"ASoC: failed to probe CPU DAI %s: %d\n",
					cpu_dai->name, ret);
1496
				module_put(cpu_dai->dev->driver->owner);
1497 1498 1499 1500
				return ret;
			}
		}
		cpu_dai->probed = 1;
F
Frank Mandarino 已提交
1501 1502
	}

1503
	/* probe the CODEC DAI */
1504 1505 1506 1507 1508
	for (i = 0; i < rtd->num_codecs; i++) {
		ret = soc_probe_codec_dai(card, rtd->codec_dais[i], order);
		if (ret)
			return ret;
	}
M
Mark Brown 已提交
1509

1510 1511 1512 1513
	/* complete DAI probe during last probe */
	if (order != SND_SOC_COMP_ORDER_LAST)
		return 0;

1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524
	/* do machine specific initialization */
	if (dai_link->init) {
		ret = dai_link->init(rtd);
		if (ret < 0) {
			dev_err(card->dev, "ASoC: failed to init %s: %d\n",
				dai_link->name, ret);
			return ret;
		}
	}

	ret = soc_post_component_init(rtd, dai_link->name);
1525
	if (ret)
1526
		return ret;
M
Mark Brown 已提交
1527

1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
#ifdef CONFIG_DEBUG_FS
	/* add DPCM sysfs entries */
	if (dai_link->dynamic) {
		ret = soc_dpcm_debugfs_add(rtd);
		if (ret < 0) {
			dev_err(rtd->dev,
				"ASoC: failed to add dpcm sysfs entries: %d\n",
				ret);
			return ret;
		}
	}
#endif

1541
	ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1542
	if (ret < 0)
1543 1544
		dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
			ret);
1545

1546 1547 1548
	if (cpu_dai->driver->compress_dai) {
		/*create compress_device"*/
		ret = soc_new_compress(rtd, num);
1549
		if (ret < 0) {
1550
			dev_err(card->dev, "ASoC: can't create compress %s\n",
1551
					 dai_link->stream_name);
1552 1553 1554
			return ret;
		}
	} else {
1555 1556 1557 1558 1559

		if (!dai_link->params) {
			/* create the pcm */
			ret = soc_new_pcm(rtd, num);
			if (ret < 0) {
1560
				dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1561
				       dai_link->stream_name, ret);
1562 1563
				return ret;
			}
1564
		} else {
1565 1566 1567
			INIT_DELAYED_WORK(&rtd->delayed_work,
						codec2codec_close_delayed_work);

1568
			/* link the DAI widgets */
1569
			ret = soc_link_dai_widgets(card, dai_link, rtd);
1570 1571
			if (ret)
				return ret;
1572
		}
1573 1574 1575
	}

	/* add platform data for AC97 devices */
1576 1577 1578 1579 1580
	for (i = 0; i < rtd->num_codecs; i++) {
		if (rtd->codec_dais[i]->driver->ac97_control)
			snd_ac97_dev_add_pdata(rtd->codec_dais[i]->codec->ac97,
					       rtd->cpu_dai->ac97_pdata);
	}
1581 1582 1583 1584

	return 0;
}

M
Mark Brown 已提交
1585
#ifdef CONFIG_SND_SOC_AC97_BUS
1586 1587
static int soc_register_ac97_codec(struct snd_soc_codec *codec,
				   struct snd_soc_dai *codec_dai)
1588 1589 1590
{
	int ret;

M
Mark Brown 已提交
1591 1592 1593
	/* Only instantiate AC97 if not already done by the adaptor
	 * for the generic AC97 subsystem.
	 */
1594
	if (codec_dai->driver->ac97_control && !codec->ac97_registered) {
1595 1596 1597 1598 1599 1600 1601 1602
		/*
		 * 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.
		 */
1603
		if (!codec->ac97_created)
1604
			return 0;
1605

1606
		ret = soc_ac97_dev_register(codec);
M
Mark Brown 已提交
1607
		if (ret < 0) {
1608
			dev_err(codec->dev,
1609
				"ASoC: AC97 device register failed: %d\n", ret);
1610
			return ret;
M
Mark Brown 已提交
1611
		}
1612

1613
		codec->ac97_registered = 1;
M
Mark Brown 已提交
1614
	}
1615 1616 1617
	return 0;
}

1618
static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
1619 1620 1621 1622 1623 1624
{
	if (codec->ac97_registered) {
		soc_ac97_dev_unregister(codec);
		codec->ac97_registered = 0;
	}
}
1625

1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643
static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
{
	int i, ret;

	for (i = 0; i < rtd->num_codecs; i++) {
		struct snd_soc_dai *codec_dai = rtd->codec_dais[i];

		ret = soc_register_ac97_codec(codec_dai->codec, codec_dai);
		if (ret) {
			while (--i >= 0)
				soc_unregister_ac97_codec(codec_dai->codec);
			return ret;
		}
	}

	return 0;
}

1644 1645
static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
{
1646 1647 1648 1649
	int i;

	for (i = 0; i < rtd->num_codecs; i++)
		soc_unregister_ac97_codec(rtd->codec_dais[i]->codec);
1650
}
M
Mark Brown 已提交
1651 1652
#endif

1653
static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1654
{
1655
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1656 1657 1658
	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
	const char *codecname = aux_dev->codec_name;

1659 1660
	rtd->codec = soc_find_codec(aux_dev->codec_of_node, codecname);
	if (!rtd->codec) {
1661 1662 1663
		if (aux_dev->codec_of_node)
			codecname = of_node_full_name(aux_dev->codec_of_node);

1664
		dev_err(card->dev, "ASoC: %s not registered\n", codecname);
1665 1666
		return -EPROBE_DEFER;
	}
1667

1668
	return 0;
1669 1670
}

1671 1672
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
{
1673
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1674
	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1675
	int ret;
1676

1677 1678
	if (rtd->codec->probed) {
		dev_err(rtd->codec->dev, "ASoC: codec already probed\n");
1679
		return -EBUSY;
1680 1681
	}

1682
	ret = soc_probe_codec(card, rtd->codec);
1683
	if (ret < 0)
1684
		return ret;
1685

1686 1687 1688 1689 1690 1691 1692 1693 1694
	/* do machine specific initialization */
	if (aux_dev->init) {
		ret = aux_dev->init(&rtd->codec->dapm);
		if (ret < 0) {
			dev_err(card->dev, "ASoC: failed to init %s: %d\n",
				aux_dev->name, ret);
			return ret;
		}
	}
1695

1696
	return soc_post_component_init(rtd, aux_dev->name);
1697 1698 1699 1700 1701 1702 1703 1704 1705
}

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) {
1706
		device_remove_file(rtd->dev, &dev_attr_codec_reg);
1707
		device_unregister(rtd->dev);
1708 1709 1710
		rtd->dev_registered = 0;
	}

1711 1712
	if (codec && codec->probed)
		soc_remove_codec(codec);
1713 1714
}

1715
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1716 1717 1718 1719 1720 1721 1722 1723
{
	int ret;

	if (codec->cache_init)
		return 0;

	ret = snd_soc_cache_init(codec);
	if (ret < 0) {
1724 1725 1726
		dev_err(codec->dev,
			"ASoC: Failed to set cache compression type: %d\n",
			ret);
1727 1728 1729 1730 1731 1732
		return ret;
	}
	codec->cache_init = 1;
	return 0;
}

1733
static int snd_soc_instantiate_card(struct snd_soc_card *card)
1734
{
1735
	struct snd_soc_codec *codec;
1736
	struct snd_soc_dai_link *dai_link;
1737
	int ret, i, order, dai_fmt;
M
Mark Brown 已提交
1738

1739
	mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1740

1741
	/* bind DAIs */
1742 1743 1744 1745 1746
	for (i = 0; i < card->num_links; i++) {
		ret = soc_bind_dai_link(card, i);
		if (ret != 0)
			goto base_error;
	}
M
Mark Brown 已提交
1747

1748
	/* bind aux_devs too */
1749
	for (i = 0; i < card->num_aux_devs; i++) {
1750
		ret = soc_bind_aux_dev(card, i);
1751 1752
		if (ret != 0)
			goto base_error;
1753
	}
1754

1755 1756 1757 1758
	/* initialize the register cache for each available codec */
	list_for_each_entry(codec, &codec_list, list) {
		if (codec->cache_init)
			continue;
1759
		ret = snd_soc_init_codec_cache(codec);
1760 1761
		if (ret < 0)
			goto base_error;
1762 1763
	}

1764
	/* card bind complete so register a sound card */
1765
	ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1766 1767
			card->owner, 0, &card->snd_card);
	if (ret < 0) {
1768 1769 1770
		dev_err(card->dev,
			"ASoC: can't create sound card for card %s: %d\n",
			card->name, ret);
1771
		goto base_error;
1772 1773
	}

M
Mark Brown 已提交
1774 1775 1776 1777 1778
	card->dapm.bias_level = SND_SOC_BIAS_OFF;
	card->dapm.dev = card->dev;
	card->dapm.card = card;
	list_add(&card->dapm.list, &card->dapm_list);

1779 1780 1781 1782
#ifdef CONFIG_DEBUG_FS
	snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
#endif

1783
#ifdef CONFIG_PM_SLEEP
1784 1785 1786
	/* deferred resume work */
	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
F
Frank Mandarino 已提交
1787

1788 1789 1790 1791
	if (card->dapm_widgets)
		snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
					  card->num_dapm_widgets);

1792 1793
	/* initialise the sound card only once */
	if (card->probe) {
1794
		ret = card->probe(card);
1795 1796 1797
		if (ret < 0)
			goto card_probe_error;
	}
M
Mark Brown 已提交
1798

1799
	/* probe all components used by DAI links on this card */
1800 1801 1802
	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (i = 0; i < card->num_links; i++) {
1803
			ret = soc_probe_link_components(card, i, order);
1804
			if (ret < 0) {
1805 1806 1807
				dev_err(card->dev,
					"ASoC: failed to instantiate card %d\n",
					ret);
1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818
				goto probe_dai_err;
			}
		}
	}

	/* probe all DAI links on this card */
	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (i = 0; i < card->num_links; i++) {
			ret = soc_probe_link_dais(card, i, order);
			if (ret < 0) {
1819 1820 1821
				dev_err(card->dev,
					"ASoC: failed to instantiate card %d\n",
					ret);
1822 1823
				goto probe_dai_err;
			}
1824 1825
		}
	}
F
Frank Mandarino 已提交
1826

1827 1828 1829
	for (i = 0; i < card->num_aux_devs; i++) {
		ret = soc_probe_aux_dev(card, i);
		if (ret < 0) {
1830 1831 1832
			dev_err(card->dev,
				"ASoC: failed to add auxiliary devices %d\n",
				ret);
1833 1834 1835 1836
			goto probe_aux_dev_err;
		}
	}

1837
	snd_soc_dapm_link_dai_widgets(card);
1838
	snd_soc_dapm_connect_dai_link_widgets(card);
1839

1840
	if (card->controls)
1841
		snd_soc_add_card_controls(card, card->controls, card->num_controls);
1842

1843 1844 1845 1846
	if (card->dapm_routes)
		snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
					card->num_dapm_routes);

1847
	for (i = 0; i < card->num_links; i++) {
1848
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1849
		dai_link = &card->dai_link[i];
1850
		dai_fmt = dai_link->dai_fmt;
1851

1852
		if (dai_fmt) {
1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
			struct snd_soc_dai **codec_dais = rtd->codec_dais;
			int j;

			for (j = 0; j < rtd->num_codecs; j++) {
				struct snd_soc_dai *codec_dai = codec_dais[j];

				ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
				if (ret != 0 && ret != -ENOTSUPP)
					dev_warn(codec_dai->dev,
						 "ASoC: Failed to set DAI format: %d\n",
						 ret);
			}
1865 1866 1867
		}

		/* If this is a regular CPU link there will be a platform */
1868 1869
		if (dai_fmt &&
		    (dai_link->platform_name || dai_link->platform_of_node)) {
1870 1871 1872 1873
			ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
						  dai_fmt);
			if (ret != 0 && ret != -ENOTSUPP)
				dev_warn(card->rtd[i].cpu_dai->dev,
1874
					 "ASoC: Failed to set DAI format: %d\n",
1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893
					 ret);
		} else if (dai_fmt) {
			/* Flip the polarity for the "CPU" end */
			dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
			switch (dai_link->dai_fmt &
				SND_SOC_DAIFMT_MASTER_MASK) {
			case SND_SOC_DAIFMT_CBM_CFM:
				dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
				break;
			case SND_SOC_DAIFMT_CBM_CFS:
				dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
				break;
			case SND_SOC_DAIFMT_CBS_CFM:
				dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
				break;
			case SND_SOC_DAIFMT_CBS_CFS:
				dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
				break;
			}
1894 1895

			ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1896
						  dai_fmt);
1897
			if (ret != 0 && ret != -ENOTSUPP)
1898
				dev_warn(card->rtd[i].cpu_dai->dev,
1899
					 "ASoC: Failed to set DAI format: %d\n",
1900 1901 1902 1903
					 ret);
		}
	}

1904 1905
	snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
		 "%s", card->name);
1906 1907
	snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
		 "%s", card->long_name ? card->long_name : card->name);
1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921
	snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
		 "%s", card->driver_name ? card->driver_name : card->name);
	for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
		switch (card->snd_card->driver[i]) {
		case '_':
		case '-':
		case '\0':
			break;
		default:
			if (!isalnum(card->snd_card->driver[i]))
				card->snd_card->driver[i] = '_';
			break;
		}
	}
1922

1923 1924 1925
	if (card->late_probe) {
		ret = card->late_probe(card);
		if (ret < 0) {
1926
			dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1927 1928 1929 1930 1931
				card->name, ret);
			goto probe_aux_dev_err;
		}
	}

1932
	if (card->fully_routed)
1933
		snd_soc_dapm_auto_nc_pins(card);
1934

1935
	snd_soc_dapm_new_widgets(card);
1936

1937 1938
	ret = snd_card_register(card->snd_card);
	if (ret < 0) {
1939 1940
		dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
				ret);
1941
		goto probe_aux_dev_err;
F
Frank Mandarino 已提交
1942 1943
	}

1944 1945 1946
#ifdef CONFIG_SND_SOC_AC97_BUS
	/* register any AC97 codecs */
	for (i = 0; i < card->num_rtd; i++) {
1947 1948
		ret = soc_register_ac97_dai_link(&card->rtd[i]);
		if (ret < 0) {
1949 1950
			dev_err(card->dev,
				"ASoC: failed to register AC97: %d\n", ret);
1951
			while (--i >= 0)
1952
				soc_unregister_ac97_dai_link(&card->rtd[i]);
1953
			goto probe_aux_dev_err;
1954
		}
1955
	}
1956 1957 1958
#endif

	card->instantiated = 1;
1959
	snd_soc_dapm_sync(&card->dapm);
1960
	mutex_unlock(&card->mutex);
1961 1962

	return 0;
1963

1964 1965 1966 1967
probe_aux_dev_err:
	for (i = 0; i < card->num_aux_devs; i++)
		soc_remove_aux_dev(card, i);

1968
probe_dai_err:
1969
	soc_remove_dai_links(card);
1970 1971

card_probe_error:
1972
	if (card->remove)
1973
		card->remove(card);
1974 1975 1976

	snd_card_free(card->snd_card);

1977
base_error:
1978
	mutex_unlock(&card->mutex);
F
Frank Mandarino 已提交
1979

1980
	return ret;
1981 1982 1983 1984 1985
}

/* probes a new socdev */
static int soc_probe(struct platform_device *pdev)
{
1986
	struct snd_soc_card *card = platform_get_drvdata(pdev);
1987

1988 1989 1990 1991 1992 1993 1994
	/*
	 * no card, so machine driver should be registering card
	 * we should not be here in that case so ret error
	 */
	if (!card)
		return -EINVAL;

1995
	dev_warn(&pdev->dev,
1996
		 "ASoC: machine %s should use snd_soc_register_card()\n",
1997 1998
		 card->name);

1999 2000
	/* Bodge while we unpick instantiation */
	card->dev = &pdev->dev;
2001

2002
	return snd_soc_register_card(card);
F
Frank Mandarino 已提交
2003 2004
}

2005
static int soc_cleanup_card_resources(struct snd_soc_card *card)
F
Frank Mandarino 已提交
2006 2007 2008
{
	int i;

2009 2010 2011
	/* make sure any delayed work runs */
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2012
		flush_delayed_work(&rtd->delayed_work);
2013
	}
2014

2015 2016 2017
	/* remove auxiliary devices */
	for (i = 0; i < card->num_aux_devs; i++)
		soc_remove_aux_dev(card, i);
F
Frank Mandarino 已提交
2018

2019
	/* remove and free each DAI */
2020
	soc_remove_dai_links(card);
2021

2022
	soc_cleanup_card_debugfs(card);
2023

2024 2025
	/* remove the card */
	if (card->remove)
2026
		card->remove(card);
2027

2028 2029
	snd_soc_dapm_free(&card->dapm);

2030 2031 2032 2033 2034 2035 2036 2037 2038
	snd_card_free(card->snd_card);
	return 0;

}

/* removes a socdev */
static int soc_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
F
Frank Mandarino 已提交
2039

M
Mark Brown 已提交
2040
	snd_soc_unregister_card(card);
F
Frank Mandarino 已提交
2041 2042 2043
	return 0;
}

2044
int snd_soc_poweroff(struct device *dev)
M
Mark Brown 已提交
2045
{
2046
	struct snd_soc_card *card = dev_get_drvdata(dev);
2047
	int i;
M
Mark Brown 已提交
2048 2049

	if (!card->instantiated)
M
Mark Brown 已提交
2050
		return 0;
M
Mark Brown 已提交
2051 2052 2053

	/* Flush out pmdown_time work - we actually do want to run it
	 * now, we're shutting down so no imminent restart. */
2054 2055
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
2056
		flush_delayed_work(&rtd->delayed_work);
2057
	}
M
Mark Brown 已提交
2058

2059
	snd_soc_dapm_shutdown(card);
M
Mark Brown 已提交
2060

2061 2062
	/* deactivate pins to sleep state */
	for (i = 0; i < card->num_rtd; i++) {
2063 2064 2065 2066
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
		struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
		int j;

2067
		pinctrl_pm_select_sleep_state(cpu_dai->dev);
2068 2069 2070 2071
		for (j = 0; j < rtd->num_codecs; j++) {
			struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
			pinctrl_pm_select_sleep_state(codec_dai->dev);
		}
2072 2073
	}

M
Mark Brown 已提交
2074
	return 0;
M
Mark Brown 已提交
2075
}
2076
EXPORT_SYMBOL_GPL(snd_soc_poweroff);
M
Mark Brown 已提交
2077

2078
const struct dev_pm_ops snd_soc_pm_ops = {
2079 2080 2081 2082
	.suspend = snd_soc_suspend,
	.resume = snd_soc_resume,
	.freeze = snd_soc_suspend,
	.thaw = snd_soc_resume,
2083
	.poweroff = snd_soc_poweroff,
2084
	.restore = snd_soc_resume,
M
Mark Brown 已提交
2085
};
2086
EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
M
Mark Brown 已提交
2087

F
Frank Mandarino 已提交
2088 2089 2090 2091
/* ASoC platform driver */
static struct platform_driver soc_driver = {
	.driver		= {
		.name		= "soc-audio",
2092
		.owner		= THIS_MODULE,
2093
		.pm		= &snd_soc_pm_ops,
F
Frank Mandarino 已提交
2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110
	},
	.probe		= soc_probe,
	.remove		= soc_remove,
};

/**
 * 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)
{
	codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2111
	if (codec->ac97 == NULL)
F
Frank Mandarino 已提交
2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122
		return -ENOMEM;

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

	codec->ac97->bus->ops = ops;
	codec->ac97->num = num;
2123 2124 2125 2126 2127 2128 2129

	/*
	 * 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
2130 2131 2132 2133
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);

2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180
static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;

static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
{
	struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;

	pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);

	gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);

	udelay(10);

	gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);

	pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
	msleep(2);
}

static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
{
	struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;

	pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);

	gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
	gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
	gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);

	udelay(10);

	gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);

	pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
	msleep(2);
}

static int snd_soc_ac97_parse_pinctl(struct device *dev,
		struct snd_ac97_reset_cfg *cfg)
{
	struct pinctrl *p;
	struct pinctrl_state *state;
	int gpio;
	int ret;

	p = devm_pinctrl_get(dev);
	if (IS_ERR(p)) {
		dev_err(dev, "Failed to get pinctrl\n");
2181
		return PTR_ERR(p);
2182 2183 2184 2185 2186 2187
	}
	cfg->pctl = p;

	state = pinctrl_lookup_state(p, "ac97-reset");
	if (IS_ERR(state)) {
		dev_err(dev, "Can't find pinctrl state ac97-reset\n");
2188
		return PTR_ERR(state);
2189 2190 2191 2192 2193 2194
	}
	cfg->pstate_reset = state;

	state = pinctrl_lookup_state(p, "ac97-warm-reset");
	if (IS_ERR(state)) {
		dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
2195
		return PTR_ERR(state);
2196 2197 2198 2199 2200 2201
	}
	cfg->pstate_warm_reset = state;

	state = pinctrl_lookup_state(p, "ac97-running");
	if (IS_ERR(state)) {
		dev_err(dev, "Can't find pinctrl state ac97-running\n");
2202
		return PTR_ERR(state);
2203 2204 2205 2206 2207 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 2244
	}
	cfg->pstate_run = state;

	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
	if (gpio < 0) {
		dev_err(dev, "Can't find ac97-sync gpio\n");
		return gpio;
	}
	ret = devm_gpio_request(dev, gpio, "AC97 link sync");
	if (ret) {
		dev_err(dev, "Failed requesting ac97-sync gpio\n");
		return ret;
	}
	cfg->gpio_sync = gpio;

	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
	if (gpio < 0) {
		dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
		return gpio;
	}
	ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
	if (ret) {
		dev_err(dev, "Failed requesting ac97-sdata gpio\n");
		return ret;
	}
	cfg->gpio_sdata = gpio;

	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
	if (gpio < 0) {
		dev_err(dev, "Can't find ac97-reset gpio\n");
		return gpio;
	}
	ret = devm_gpio_request(dev, gpio, "AC97 link reset");
	if (ret) {
		dev_err(dev, "Failed requesting ac97-reset gpio\n");
		return ret;
	}
	cfg->gpio_reset = gpio;

	return 0;
}

2245
struct snd_ac97_bus_ops *soc_ac97_ops;
2246
EXPORT_SYMBOL_GPL(soc_ac97_ops);
2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261

int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
{
	if (ops == soc_ac97_ops)
		return 0;

	if (soc_ac97_ops && ops)
		return -EBUSY;

	soc_ac97_ops = ops;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);

2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290
/**
 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
 *
 * This function sets the reset and warm_reset properties of ops and parses
 * the device node of pdev to get pinctrl states and gpio numbers to use.
 */
int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
		struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct snd_ac97_reset_cfg cfg;
	int ret;

	ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
	if (ret)
		return ret;

	ret = snd_soc_set_ac97_ops(ops);
	if (ret)
		return ret;

	ops->warm_reset = snd_soc_ac97_warm_reset;
	ops->reset = snd_soc_ac97_reset;

	snd_ac97_rst_cfg = cfg;
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);

F
Frank Mandarino 已提交
2291 2292 2293 2294 2295 2296 2297 2298
/**
 * 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)
{
2299
#ifdef CONFIG_SND_SOC_AC97_BUS
2300
	soc_unregister_ac97_codec(codec);
2301
#endif
F
Frank Mandarino 已提交
2302 2303 2304
	kfree(codec->ac97->bus);
	kfree(codec->ac97);
	codec->ac97 = NULL;
2305
	codec->ac97_created = 0;
F
Frank Mandarino 已提交
2306 2307 2308 2309 2310 2311 2312
}
EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);

/**
 * snd_soc_cnew - create new control
 * @_template: control template
 * @data: control private data
M
Mark Brown 已提交
2313
 * @long_name: control long name
2314
 * @prefix: control name prefix
F
Frank Mandarino 已提交
2315 2316 2317 2318 2319 2320
 *
 * 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,
2321
				  void *data, const char *long_name,
2322
				  const char *prefix)
F
Frank Mandarino 已提交
2323 2324
{
	struct snd_kcontrol_new template;
2325 2326
	struct snd_kcontrol *kcontrol;
	char *name = NULL;
F
Frank Mandarino 已提交
2327 2328 2329 2330

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

2331 2332 2333 2334
	if (!long_name)
		long_name = template.name;

	if (prefix) {
2335
		name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348
		if (!name)
			return NULL;

		template.name = name;
	} else {
		template.name = long_name;
	}

	kcontrol = snd_ctl_new1(&template, data);

	kfree(name);

	return kcontrol;
F
Frank Mandarino 已提交
2349 2350 2351
}
EXPORT_SYMBOL_GPL(snd_soc_cnew);

2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362
static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
	const struct snd_kcontrol_new *controls, int num_controls,
	const char *prefix, void *data)
{
	int err, i;

	for (i = 0; i < num_controls; i++) {
		const struct snd_kcontrol_new *control = &controls[i];
		err = snd_ctl_add(card, snd_soc_cnew(control, data,
						     control->name, prefix));
		if (err < 0) {
2363 2364
			dev_err(dev, "ASoC: Failed to add %s: %d\n",
				control->name, err);
2365 2366 2367 2368 2369 2370 2371
			return err;
		}
	}

	return 0;
}

2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
					       const char *name)
{
	struct snd_card *card = soc_card->snd_card;
	struct snd_kcontrol *kctl;

	if (unlikely(!name))
		return NULL;

	list_for_each_entry(kctl, &card->controls, list)
		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
			return kctl;
	return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);

2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406
/**
 * snd_soc_add_component_controls - Add an array of controls to a component.
 *
 * @component: Component 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_component_controls(struct snd_soc_component *component,
	const struct snd_kcontrol_new *controls, unsigned int num_controls)
{
	struct snd_card *card = component->card->snd_card;

	return snd_soc_add_controls(card, component->dev, controls,
			num_controls, component->name_prefix, component);
}
EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);

I
Ian Molton 已提交
2407
/**
2408 2409
 * snd_soc_add_codec_controls - add an array of controls to a codec.
 * Convenience function to add a list of controls. Many codecs were
I
Ian Molton 已提交
2410 2411 2412 2413 2414 2415 2416 2417
 * 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.
 */
2418
int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2419
	const struct snd_kcontrol_new *controls, unsigned int num_controls)
I
Ian Molton 已提交
2420
{
2421 2422
	return snd_soc_add_component_controls(&codec->component, controls,
		num_controls);
I
Ian Molton 已提交
2423
}
2424
EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
I
Ian Molton 已提交
2425

2426 2427
/**
 * snd_soc_add_platform_controls - add an array of controls to a platform.
2428
 * Convenience function to add a list of controls.
2429 2430 2431 2432 2433 2434 2435 2436
 *
 * @platform: platform 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_platform_controls(struct snd_soc_platform *platform,
2437
	const struct snd_kcontrol_new *controls, unsigned int num_controls)
2438
{
2439 2440
	return snd_soc_add_component_controls(&platform->component, controls,
		num_controls);
2441 2442 2443
}
EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);

2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483
/**
 * snd_soc_add_card_controls - add an array of controls to a SoC card.
 * Convenience function to add a list of controls.
 *
 * @soc_card: SoC card 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_card_controls(struct snd_soc_card *soc_card,
	const struct snd_kcontrol_new *controls, int num_controls)
{
	struct snd_card *card = soc_card->snd_card;

	return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
			NULL, soc_card);
}
EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);

/**
 * snd_soc_add_dai_controls - add an array of controls to a DAI.
 * Convienience function to add a list of controls.
 *
 * @dai: DAI 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_dai_controls(struct snd_soc_dai *dai,
	const struct snd_kcontrol_new *controls, int num_controls)
{
	struct snd_card *card = dai->card->snd_card;

	return snd_soc_add_controls(card, dai->dev, controls, num_controls,
			NULL, dai);
}
EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);

F
Frank Mandarino 已提交
2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500
/**
 * 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;
2501
	uinfo->value.enumerated.items = e->items;
F
Frank Mandarino 已提交
2502

2503 2504
	if (uinfo->value.enumerated.item >= e->items)
		uinfo->value.enumerated.item = e->items - 1;
2505 2506 2507
	strlcpy(uinfo->value.enumerated.name,
		e->texts[uinfo->value.enumerated.item],
		sizeof(uinfo->value.enumerated.name));
F
Frank Mandarino 已提交
2508 2509 2510 2511 2512 2513 2514
	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
2515
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2516 2517 2518 2519 2520 2521 2522 2523
 *
 * 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)
{
2524
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
F
Frank Mandarino 已提交
2525
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2526 2527
	unsigned int val, item;
	unsigned int reg_val;
2528
	int ret;
F
Frank Mandarino 已提交
2529

2530 2531 2532
	ret = snd_soc_component_read(component, e->reg, &reg_val);
	if (ret)
		return ret;
2533 2534 2535 2536 2537 2538 2539 2540
	val = (reg_val >> e->shift_l) & e->mask;
	item = snd_soc_enum_val_to_item(e, val);
	ucontrol->value.enumerated.item[0] = item;
	if (e->shift_l != e->shift_r) {
		val = (reg_val >> e->shift_l) & e->mask;
		item = snd_soc_enum_val_to_item(e, val);
		ucontrol->value.enumerated.item[1] = item;
	}
F
Frank Mandarino 已提交
2541 2542 2543 2544 2545 2546 2547 2548

	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
2549
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2550 2551 2552 2553 2554 2555 2556 2557
 *
 * 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)
{
2558
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
F
Frank Mandarino 已提交
2559
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2560
	unsigned int *item = ucontrol->value.enumerated.item;
2561
	unsigned int val;
2562
	unsigned int mask;
F
Frank Mandarino 已提交
2563

2564
	if (item[0] >= e->items)
F
Frank Mandarino 已提交
2565
		return -EINVAL;
2566
	val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2567
	mask = e->mask << e->shift_l;
F
Frank Mandarino 已提交
2568
	if (e->shift_l != e->shift_r) {
2569
		if (item[1] >= e->items)
F
Frank Mandarino 已提交
2570
			return -EINVAL;
2571
		val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2572
		mask |= e->mask << e->shift_r;
F
Frank Mandarino 已提交
2573 2574
	}

2575
	return snd_soc_component_update_bits(component, e->reg, mask, val);
F
Frank Mandarino 已提交
2576 2577 2578
}
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);

P
Peter Ujfalusi 已提交
2579
/**
2580
 * snd_soc_read_signed - Read a codec register and interprete as signed value
2581
 * @component: component
2582 2583 2584 2585
 * @reg: Register to read
 * @mask: Mask to use after shifting the register value
 * @shift: Right shift of register value
 * @sign_bit: Bit that describes if a number is negative or not.
2586
 * @signed_val: Pointer to where the read value should be stored
P
Peter Ujfalusi 已提交
2587
 *
2588 2589 2590
 * This functions reads a codec register. The register value is shifted right
 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
 * the given registervalue into a signed integer if sign_bit is non-zero.
P
Peter Ujfalusi 已提交
2591
 *
2592
 * Returns 0 on sucess, otherwise an error value
P
Peter Ujfalusi 已提交
2593
 */
2594 2595 2596
static int snd_soc_read_signed(struct snd_soc_component *component,
	unsigned int reg, unsigned int mask, unsigned int shift,
	unsigned int sign_bit, int *signed_val)
P
Peter Ujfalusi 已提交
2597
{
2598 2599
	int ret;
	unsigned int val;
P
Peter Ujfalusi 已提交
2600

2601 2602 2603 2604 2605
	ret = snd_soc_component_read(component, reg, &val);
	if (ret < 0)
		return ret;

	val = (val >> shift) & mask;
P
Peter Ujfalusi 已提交
2606

2607 2608 2609 2610
	if (!sign_bit) {
		*signed_val = val;
		return 0;
	}
P
Peter Ujfalusi 已提交
2611

2612
	/* non-negative number */
2613 2614 2615 2616
	if (!(val & BIT(sign_bit))) {
		*signed_val = val;
		return 0;
	}
P
Peter Ujfalusi 已提交
2617

2618
	ret = val;
P
Peter Ujfalusi 已提交
2619

2620 2621 2622 2623 2624 2625 2626 2627
	/*
	 * The register most probably does not contain a full-sized int.
	 * Instead we have an arbitrary number of bits in a signed
	 * representation which has to be translated into a full-sized int.
	 * This is done by filling up all bits above the sign-bit.
	 */
	ret |= ~((int)(BIT(sign_bit) - 1));

2628 2629 2630
	*signed_val = ret;

	return 0;
P
Peter Ujfalusi 已提交
2631 2632
}

F
Frank Mandarino 已提交
2633 2634 2635 2636 2637
/**
 * snd_soc_info_volsw - single mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
2638 2639
 * Callback to provide information about a single mixer control, or a double
 * mixer control that spans 2 registers.
F
Frank Mandarino 已提交
2640 2641 2642 2643 2644 2645
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
2646 2647
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2648
	int platform_max;
F
Frank Mandarino 已提交
2649

2650 2651 2652 2653 2654
	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
2655 2656 2657 2658
		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	else
		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

2659
	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
F
Frank Mandarino 已提交
2660
	uinfo->value.integer.min = 0;
2661
	uinfo->value.integer.max = platform_max - mc->min;
F
Frank Mandarino 已提交
2662 2663 2664 2665 2666 2667 2668
	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
2669
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2670
 *
2671 2672
 * Callback to get the value of a single mixer control, or a double mixer
 * control that spans 2 registers.
F
Frank Mandarino 已提交
2673 2674 2675 2676 2677 2678
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2679
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2680 2681
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2682
	unsigned int reg = mc->reg;
2683
	unsigned int reg2 = mc->rreg;
2684 2685
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2686
	int max = mc->max;
2687 2688
	int min = mc->min;
	int sign_bit = mc->sign_bit;
2689 2690
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
2691 2692
	int val;
	int ret;
F
Frank Mandarino 已提交
2693

2694 2695 2696
	if (sign_bit)
		mask = BIT(sign_bit + 1) - 1;

2697 2698 2699 2700 2701
	ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
	if (ret)
		return ret;

	ucontrol->value.integer.value[0] = val - min;
2702
	if (invert)
F
Frank Mandarino 已提交
2703
		ucontrol->value.integer.value[0] =
P
Philipp Zabel 已提交
2704
			max - ucontrol->value.integer.value[0];
2705 2706 2707

	if (snd_soc_volsw_is_stereo(mc)) {
		if (reg == reg2)
2708 2709
			ret = snd_soc_read_signed(component, reg, mask, rshift,
				sign_bit, &val);
2710
		else
2711 2712 2713 2714 2715 2716
			ret = snd_soc_read_signed(component, reg2, mask, shift,
				sign_bit, &val);
		if (ret)
			return ret;

		ucontrol->value.integer.value[1] = val - min;
2717
		if (invert)
F
Frank Mandarino 已提交
2718
			ucontrol->value.integer.value[1] =
P
Philipp Zabel 已提交
2719
				max - ucontrol->value.integer.value[1];
F
Frank Mandarino 已提交
2720 2721 2722 2723 2724 2725 2726 2727 2728
	}

	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
2729
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2730
 *
2731 2732
 * Callback to set the value of a single mixer control, or a double mixer
 * control that spans 2 registers.
F
Frank Mandarino 已提交
2733 2734 2735 2736 2737 2738
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2739
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2740 2741
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2742
	unsigned int reg = mc->reg;
2743
	unsigned int reg2 = mc->rreg;
2744 2745
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2746
	int max = mc->max;
2747 2748
	int min = mc->min;
	unsigned int sign_bit = mc->sign_bit;
2749 2750
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
2751
	int err;
2752
	bool type_2r = false;
2753 2754
	unsigned int val2 = 0;
	unsigned int val, val_mask;
F
Frank Mandarino 已提交
2755

2756 2757 2758 2759
	if (sign_bit)
		mask = BIT(sign_bit + 1) - 1;

	val = ((ucontrol->value.integer.value[0] + min) & mask);
F
Frank Mandarino 已提交
2760
	if (invert)
P
Philipp Zabel 已提交
2761
		val = max - val;
F
Frank Mandarino 已提交
2762 2763
	val_mask = mask << shift;
	val = val << shift;
2764
	if (snd_soc_volsw_is_stereo(mc)) {
2765
		val2 = ((ucontrol->value.integer.value[1] + min) & mask);
F
Frank Mandarino 已提交
2766
		if (invert)
P
Philipp Zabel 已提交
2767
			val2 = max - val2;
2768 2769 2770 2771 2772
		if (reg == reg2) {
			val_mask |= mask << rshift;
			val |= val2 << rshift;
		} else {
			val2 = val2 << shift;
2773
			type_2r = true;
2774
		}
F
Frank Mandarino 已提交
2775
	}
2776
	err = snd_soc_component_update_bits(component, reg, val_mask, val);
2777
	if (err < 0)
F
Frank Mandarino 已提交
2778 2779
		return err;

2780
	if (type_2r)
2781 2782
		err = snd_soc_component_update_bits(component, reg2, val_mask,
			val2);
2783

F
Frank Mandarino 已提交
2784 2785
	return err;
}
2786
EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
F
Frank Mandarino 已提交
2787

2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800
/**
 * snd_soc_get_volsw_sx - single mixer get callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to get the value of a single mixer control, or a double mixer
 * control that spans 2 registers.
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
		      struct snd_ctl_elem_value *ucontrol)
{
2801
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2802 2803 2804 2805 2806 2807 2808 2809 2810
	struct soc_mixer_control *mc =
	    (struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
	int max = mc->max;
	int min = mc->min;
	int mask = (1 << (fls(min + max) - 1)) - 1;
2811 2812
	unsigned int val;
	int ret;
2813

2814 2815 2816
	ret = snd_soc_component_read(component, reg, &val);
	if (ret < 0)
		return ret;
2817

2818 2819 2820 2821 2822 2823 2824 2825 2826 2827
	ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;

	if (snd_soc_volsw_is_stereo(mc)) {
		ret = snd_soc_component_read(component, reg2, &val);
		if (ret < 0)
			return ret;

		val = ((val >> rshift) - min) & mask;
		ucontrol->value.integer.value[1] = val;
	}
2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);

/**
 * snd_soc_put_volsw_sx - double mixer set callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to set the value of a double mixer control that spans 2 registers.
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
			 struct snd_ctl_elem_value *ucontrol)
{
2845
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2846 2847 2848 2849 2850 2851 2852 2853 2854 2855
	struct soc_mixer_control *mc =
	    (struct soc_mixer_control *)kcontrol->private_value;

	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
	int max = mc->max;
	int min = mc->min;
	int mask = (1 << (fls(min + max) - 1)) - 1;
2856
	int err = 0;
2857
	unsigned int val, val_mask, val2 = 0;
2858 2859 2860 2861 2862

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

2863
	err = snd_soc_component_update_bits(component, reg, val_mask, val);
2864 2865
	if (err < 0)
		return err;
2866 2867 2868 2869 2870 2871

	if (snd_soc_volsw_is_stereo(mc)) {
		val_mask = mask << rshift;
		val2 = (ucontrol->value.integer.value[1] + min) & mask;
		val2 = val2 << rshift;

2872 2873
		err = snd_soc_component_update_bits(component, reg2, val_mask,
			val2);
2874
	}
2875
	return err;
2876 2877 2878
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);

2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890
/**
 * 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)
{
2891 2892
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2893
	int platform_max;
2894
	int min = mc->min;
2895

2896 2897 2898 2899
	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

2900 2901 2902
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
2903
	uinfo->value.integer.max = platform_max - min;
2904 2905 2906 2907 2908 2909 2910
	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
2911
 * @ucontrol: control element information
2912 2913 2914 2915 2916 2917 2918 2919
 *
 * 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)
{
2920 2921
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2922
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2923
	unsigned int reg = mc->reg;
2924
	unsigned int val;
2925
	int min = mc->min;
2926 2927 2928 2929 2930
	int ret;

	ret = snd_soc_component_read(component, reg, &val);
	if (ret)
		return ret;
2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942

	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
2943
 * @ucontrol: control element information
2944 2945 2946 2947 2948 2949 2950 2951
 *
 * 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)
{
2952 2953
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2954
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2955
	unsigned int reg = mc->reg;
2956
	int min = mc->min;
2957
	unsigned int val;
2958 2959 2960 2961

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

2962
	return snd_soc_component_update_bits(component, reg, 0xffff, val);
2963 2964 2965
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);

2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988
/**
 * snd_soc_info_volsw_range - single mixer info callback with range.
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information, within a range, about a single
 * mixer control.
 *
 * returns 0 for success.
 */
int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	int platform_max;
	int min = mc->min;

	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2989
	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = platform_max - min;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);

/**
 * snd_soc_put_volsw_range - single mixer put value callback with range.
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to set the value, within a range, for a single mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
3011
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3012
	unsigned int reg = mc->reg;
3013
	unsigned int rreg = mc->rreg;
3014 3015 3016 3017 3018 3019
	unsigned int shift = mc->shift;
	int min = mc->min;
	int max = mc->max;
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
	unsigned int val, val_mask;
3020
	int ret;
3021 3022 3023 3024 3025 3026 3027

	val = ((ucontrol->value.integer.value[0] + min) & mask);
	if (invert)
		val = max - val;
	val_mask = mask << shift;
	val = val << shift;

3028
	ret = snd_soc_component_update_bits(component, reg, val_mask, val);
3029
	if (ret < 0)
3030 3031 3032 3033 3034 3035 3036 3037 3038
		return ret;

	if (snd_soc_volsw_is_stereo(mc)) {
		val = ((ucontrol->value.integer.value[1] + min) & mask);
		if (invert)
			val = max - val;
		val_mask = mask << shift;
		val = val << shift;

3039 3040
		ret = snd_soc_component_update_bits(component, rreg, val_mask,
			val);
3041 3042 3043
	}

	return ret;
3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);

/**
 * snd_soc_get_volsw_range - single mixer get callback with range
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to get the value, within a range, of a single mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
3059
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3060 3061 3062
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
3063
	unsigned int rreg = mc->rreg;
3064 3065 3066 3067 3068
	unsigned int shift = mc->shift;
	int min = mc->min;
	int max = mc->max;
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
3069 3070
	unsigned int val;
	int ret;
3071

3072 3073 3074 3075 3076
	ret = snd_soc_component_read(component, reg, &val);
	if (ret)
		return ret;

	ucontrol->value.integer.value[0] = (val >> shift) & mask;
3077 3078 3079 3080 3081 3082
	if (invert)
		ucontrol->value.integer.value[0] =
			max - ucontrol->value.integer.value[0];
	ucontrol->value.integer.value[0] =
		ucontrol->value.integer.value[0] - min;

3083
	if (snd_soc_volsw_is_stereo(mc)) {
3084 3085 3086 3087 3088
		ret = snd_soc_component_read(component, rreg, &val);
		if (ret)
			return ret;

		ucontrol->value.integer.value[1] = (val >> shift) & mask;
3089 3090 3091 3092 3093 3094 3095
		if (invert)
			ucontrol->value.integer.value[1] =
				max - ucontrol->value.integer.value[1];
		ucontrol->value.integer.value[1] =
			ucontrol->value.integer.value[1] - min;
	}

3096 3097 3098 3099
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);

3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111
/**
 * 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)
{
3112
	struct snd_card *card = codec->component.card->snd_card;
3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
	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) {
3131
			mc->platform_max = max;
3132 3133 3134 3135 3136 3137 3138
			ret = 0;
		}
	}
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_limit_volume);

3139 3140 3141
int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
		       struct snd_ctl_elem_info *uinfo)
{
3142
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3143 3144 3145
	struct soc_bytes *params = (void *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3146
	uinfo->count = params->num_regs * component->val_bytes;
3147 3148 3149 3150 3151 3152 3153 3154

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_info);

int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
		      struct snd_ctl_elem_value *ucontrol)
{
3155
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3156 3157 3158
	struct soc_bytes *params = (void *)kcontrol->private_value;
	int ret;

3159 3160
	if (component->regmap)
		ret = regmap_raw_read(component->regmap, params->base,
3161
				      ucontrol->value.bytes.data,
3162
				      params->num_regs * component->val_bytes);
3163 3164 3165
	else
		ret = -EINVAL;

3166 3167
	/* Hide any masked bytes to ensure consistent data reporting */
	if (ret == 0 && params->mask) {
3168
		switch (component->val_bytes) {
3169 3170 3171 3172 3173
		case 1:
			ucontrol->value.bytes.data[0] &= ~params->mask;
			break;
		case 2:
			((u16 *)(&ucontrol->value.bytes.data))[0]
3174
				&= cpu_to_be16(~params->mask);
3175 3176 3177
			break;
		case 4:
			((u32 *)(&ucontrol->value.bytes.data))[0]
3178
				&= cpu_to_be32(~params->mask);
3179 3180 3181 3182 3183 3184
			break;
		default:
			return -EINVAL;
		}
	}

3185 3186 3187 3188 3189 3190 3191
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_get);

int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
		      struct snd_ctl_elem_value *ucontrol)
{
3192
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3193
	struct soc_bytes *params = (void *)kcontrol->private_value;
3194
	int ret, len;
3195
	unsigned int val, mask;
3196
	void *data;
3197

3198
	if (!component->regmap)
3199 3200
		return -EINVAL;

3201
	len = params->num_regs * component->val_bytes;
3202

3203 3204 3205 3206
	data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
	if (!data)
		return -ENOMEM;

3207 3208 3209 3210 3211 3212
	/*
	 * If we've got a mask then we need to preserve the register
	 * bits.  We shouldn't modify the incoming data so take a
	 * copy.
	 */
	if (params->mask) {
3213
		ret = regmap_read(component->regmap, params->base, &val);
3214
		if (ret != 0)
3215
			goto out;
3216 3217 3218

		val &= params->mask;

3219
		switch (component->val_bytes) {
3220 3221 3222 3223 3224
		case 1:
			((u8 *)data)[0] &= ~params->mask;
			((u8 *)data)[0] |= val;
			break;
		case 2:
3225
			mask = ~params->mask;
3226
			ret = regmap_parse_val(component->regmap,
3227 3228 3229 3230 3231 3232
							&mask, &mask);
			if (ret != 0)
				goto out;

			((u16 *)data)[0] &= mask;

3233
			ret = regmap_parse_val(component->regmap,
3234 3235 3236 3237 3238
							&val, &val);
			if (ret != 0)
				goto out;

			((u16 *)data)[0] |= val;
3239 3240
			break;
		case 4:
3241
			mask = ~params->mask;
3242
			ret = regmap_parse_val(component->regmap,
3243 3244 3245 3246 3247 3248
							&mask, &mask);
			if (ret != 0)
				goto out;

			((u32 *)data)[0] &= mask;

3249
			ret = regmap_parse_val(component->regmap,
3250 3251 3252 3253 3254
							&val, &val);
			if (ret != 0)
				goto out;

			((u32 *)data)[0] |= val;
3255 3256
			break;
		default:
3257 3258
			ret = -EINVAL;
			goto out;
3259 3260 3261
		}
	}

3262
	ret = regmap_raw_write(component->regmap, params->base,
3263 3264
			       data, len);

3265
out:
3266
	kfree(data);
3267 3268 3269 3270 3271

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_put);

V
Vinod Koul 已提交
3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283
int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_info *ucontrol)
{
	struct soc_bytes_ext *params = (void *)kcontrol->private_value;

	ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
	ucontrol->count = params->max;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);

3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304
int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
				unsigned int size, unsigned int __user *tlv)
{
	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
	unsigned int count = size < params->max ? size : params->max;
	int ret = -ENXIO;

	switch (op_flag) {
	case SNDRV_CTL_TLV_OP_READ:
		if (params->get)
			ret = params->get(tlv, count);
		break;
	case SNDRV_CTL_TLV_OP_WRITE:
		if (params->put)
			ret = params->put(tlv, count);
		break;
	}
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);

3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345
/**
 * snd_soc_info_xr_sx - signed multi register info callback
 * @kcontrol: mreg control
 * @uinfo: control element information
 *
 * Callback to provide information of a control that can
 * span multiple codec registers which together
 * forms a single signed value in a MSB/LSB manner.
 *
 * Returns 0 for success.
 */
int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	struct soc_mreg_control *mc =
		(struct soc_mreg_control *)kcontrol->private_value;
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = mc->min;
	uinfo->value.integer.max = mc->max;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);

/**
 * snd_soc_get_xr_sx - signed multi register get callback
 * @kcontrol: mreg control
 * @ucontrol: control element information
 *
 * Callback to get the value of a control that can span
 * multiple codec registers which together forms a single
 * signed value in a MSB/LSB manner. The control supports
 * specifying total no of bits used to allow for bitfields
 * across the multiple codec registers.
 *
 * Returns 0 for success.
 */
int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
3346
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3347 3348 3349 3350
	struct soc_mreg_control *mc =
		(struct soc_mreg_control *)kcontrol->private_value;
	unsigned int regbase = mc->regbase;
	unsigned int regcount = mc->regcount;
3351
	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3352 3353 3354 3355 3356 3357
	unsigned int regwmask = (1<<regwshift)-1;
	unsigned int invert = mc->invert;
	unsigned long mask = (1UL<<mc->nbits)-1;
	long min = mc->min;
	long max = mc->max;
	long val = 0;
3358
	unsigned int regval;
3359
	unsigned int i;
3360
	int ret;
3361 3362

	for (i = 0; i < regcount; i++) {
3363 3364 3365 3366
		ret = snd_soc_component_read(component, regbase+i, &regval);
		if (ret)
			return ret;
		val |= (regval & regwmask) << (regwshift*(regcount-i-1));
3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394
	}
	val &= mask;
	if (min < 0 && val > max)
		val |= ~mask;
	if (invert)
		val = max - val;
	ucontrol->value.integer.value[0] = val;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);

/**
 * snd_soc_put_xr_sx - signed multi register get callback
 * @kcontrol: mreg control
 * @ucontrol: control element information
 *
 * Callback to set the value of a control that can span
 * multiple codec registers which together forms a single
 * signed value in a MSB/LSB manner. The control supports
 * specifying total no of bits used to allow for bitfields
 * across the multiple codec registers.
 *
 * Returns 0 for success.
 */
int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
3395
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3396 3397 3398 3399
	struct soc_mreg_control *mc =
		(struct soc_mreg_control *)kcontrol->private_value;
	unsigned int regbase = mc->regbase;
	unsigned int regcount = mc->regcount;
3400
	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414
	unsigned int regwmask = (1<<regwshift)-1;
	unsigned int invert = mc->invert;
	unsigned long mask = (1UL<<mc->nbits)-1;
	long max = mc->max;
	long val = ucontrol->value.integer.value[0];
	unsigned int i, regval, regmask;
	int err;

	if (invert)
		val = max - val;
	val &= mask;
	for (i = 0; i < regcount; i++) {
		regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
		regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3415
		err = snd_soc_component_update_bits(component, regbase+i,
3416 3417 3418 3419 3420 3421 3422 3423 3424
				regmask, regval);
		if (err < 0)
			return err;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);

3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436
/**
 * snd_soc_get_strobe - strobe get callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback get the value of a strobe mixer control.
 *
 * Returns 0 for success.
 */
int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
3437
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3438 3439 3440 3441 3442 3443
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int mask = 1 << shift;
	unsigned int invert = mc->invert != 0;
3444 3445 3446 3447 3448 3449 3450 3451
	unsigned int val;
	int ret;

	ret = snd_soc_component_read(component, reg, &val);
	if (ret)
		return ret;

	val &= mask;
3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473

	if (shift != 0 && val != 0)
		val = val >> shift;
	ucontrol->value.enumerated.item[0] = val ^ invert;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_strobe);

/**
 * snd_soc_put_strobe - strobe put callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback strobe a register bit to high then low (or the inverse)
 * in one pass of a single mixer enum control.
 *
 * Returns 1 for success.
 */
int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
3474
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int mask = 1 << shift;
	unsigned int invert = mc->invert != 0;
	unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
	unsigned int val1 = (strobe ^ invert) ? mask : 0;
	unsigned int val2 = (strobe ^ invert) ? 0 : mask;
	int err;

3486
	err = snd_soc_component_update_bits(component, reg, mask, val1);
3487 3488 3489
	if (err < 0)
		return err;

3490
	return snd_soc_component_update_bits(component, reg, mask, val2);
3491 3492 3493
}
EXPORT_SYMBOL_GPL(snd_soc_put_strobe);

3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505
/**
 * 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)
{
3506 3507
	if (dai->driver && dai->driver->ops->set_sysclk)
		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3508
	else if (dai->codec && dai->codec->driver->set_sysclk)
3509
		return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3510
						      freq, dir);
3511
	else
3512
		return -ENOTSUPP;
3513 3514 3515
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);

3516 3517 3518 3519
/**
 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
 * @codec: CODEC
 * @clk_id: DAI specific clock ID
3520
 * @source: Source for the clock
3521 3522 3523 3524 3525 3526
 * @freq: new clock frequency in Hz
 * @dir: new clock direction - input/output.
 *
 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
 */
int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3527
			     int source, unsigned int freq, int dir)
3528 3529
{
	if (codec->driver->set_sysclk)
3530 3531
		return codec->driver->set_sysclk(codec, clk_id, source,
						 freq, dir);
3532
	else
3533
		return -ENOTSUPP;
3534 3535 3536
}
EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);

3537 3538 3539
/**
 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
 * @dai: DAI
M
Mark Brown 已提交
3540
 * @div_id: DAI specific clock divider ID
3541 3542 3543 3544 3545 3546 3547 3548 3549
 * @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)
{
3550 3551
	if (dai->driver && dai->driver->ops->set_clkdiv)
		return dai->driver->ops->set_clkdiv(dai, div_id, div);
3552 3553 3554 3555 3556 3557 3558 3559 3560
	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
3561
 * @source: DAI specific source for the PLL
3562 3563 3564 3565 3566
 * @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.
 */
3567 3568
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
	unsigned int freq_in, unsigned int freq_out)
3569
{
3570 3571
	if (dai->driver && dai->driver->ops->set_pll)
		return dai->driver->ops->set_pll(dai, pll_id, source,
3572
					 freq_in, freq_out);
3573 3574 3575
	else if (dai->codec && dai->codec->driver->set_pll)
		return dai->codec->driver->set_pll(dai->codec, pll_id, source,
						   freq_in, freq_out);
3576 3577 3578 3579 3580
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);

3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601
/*
 * snd_soc_codec_set_pll - configure codec PLL.
 * @codec: CODEC
 * @pll_id: DAI specific PLL ID
 * @source: DAI specific source for the PLL
 * @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.
 */
int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
			  unsigned int freq_in, unsigned int freq_out)
{
	if (codec->driver->set_pll)
		return codec->driver->set_pll(codec, pll_id, source,
					      freq_in, freq_out);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);

3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617
/**
 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
 * @dai: DAI
 * @ratio Ratio of BCLK to Sample rate.
 *
 * Configures the DAI for a preset BCLK to sample rate ratio.
 */
int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
{
	if (dai->driver && dai->driver->ops->set_bclk_ratio)
		return dai->driver->ops->set_bclk_ratio(dai, ratio);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);

3618 3619 3620 3621 3622 3623 3624 3625 3626
/**
 * 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)
{
3627
	if (dai->driver == NULL)
3628
		return -EINVAL;
3629 3630 3631
	if (dai->driver->ops->set_fmt == NULL)
		return -ENOTSUPP;
	return dai->driver->ops->set_fmt(dai, fmt);
3632 3633 3634
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);

3635
/**
3636
 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3637 3638 3639 3640 3641 3642
 * @slots: Number of slots in use.
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
 *
 * Generates the TDM tx and rx slot default masks for DAI.
 */
3643
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658
					  unsigned int *tx_mask,
					  unsigned int *rx_mask)
{
	if (*tx_mask || *rx_mask)
		return 0;

	if (!slots)
		return -EINVAL;

	*tx_mask = (1 << slots) - 1;
	*rx_mask = (1 << slots) - 1;

	return 0;
}

3659 3660 3661
/**
 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
 * @dai: DAI
3662 3663
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
3664
 * @slots: Number of slots in use.
3665
 * @slot_width: Width in bits for each slot.
3666 3667 3668 3669 3670
 *
 * 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,
3671
	unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3672
{
3673 3674
	if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
		dai->driver->ops->xlate_tdm_slot_mask(slots,
3675 3676
						&tx_mask, &rx_mask);
	else
3677
		snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3678

3679 3680 3681
	dai->tx_mask = tx_mask;
	dai->rx_mask = rx_mask;

3682 3683
	if (dai->driver && dai->driver->ops->set_tdm_slot)
		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3684
				slots, slot_width);
3685
	else
3686
		return -ENOTSUPP;
3687 3688 3689
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);

3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705
/**
 * 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)
{
3706 3707
	if (dai->driver && dai->driver->ops->set_channel_map)
		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3708 3709 3710 3711 3712 3713
			rx_num, rx_slot);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);

3714 3715 3716 3717 3718 3719 3720 3721 3722
/**
 * 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)
{
3723 3724
	if (dai->driver && dai->driver->ops->set_tristate)
		return dai->driver->ops->set_tristate(dai, tristate);
3725 3726 3727 3728 3729 3730 3731 3732 3733
	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
3734
 * @direction: stream to mute
3735 3736 3737
 *
 * Mutes the DAI DAC.
 */
3738 3739
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
			     int direction)
3740
{
3741 3742 3743 3744 3745 3746 3747
	if (!dai->driver)
		return -ENOTSUPP;

	if (dai->driver->ops->mute_stream)
		return dai->driver->ops->mute_stream(dai, mute, direction);
	else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
		 dai->driver->ops->digital_mute)
3748
		return dai->driver->ops->digital_mute(dai, mute);
3749
	else
3750
		return -ENOTSUPP;
3751 3752 3753
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);

3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780
static int snd_soc_init_multicodec(struct snd_soc_card *card,
				   struct snd_soc_dai_link *dai_link)
{
	/* Legacy codec/codec_dai link is a single entry in multicodec */
	if (dai_link->codec_name || dai_link->codec_of_node ||
	    dai_link->codec_dai_name) {
		dai_link->num_codecs = 1;

		dai_link->codecs = devm_kzalloc(card->dev,
				sizeof(struct snd_soc_dai_link_component),
				GFP_KERNEL);
		if (!dai_link->codecs)
			return -ENOMEM;

		dai_link->codecs[0].name = dai_link->codec_name;
		dai_link->codecs[0].of_node = dai_link->codec_of_node;
		dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
	}

	if (!dai_link->codecs) {
		dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
		return -EINVAL;
	}

	return 0;
}

M
Mark Brown 已提交
3781 3782 3783
/**
 * snd_soc_register_card - Register a card with the ASoC core
 *
M
Mark Brown 已提交
3784
 * @card: Card to register
M
Mark Brown 已提交
3785 3786
 *
 */
3787
int snd_soc_register_card(struct snd_soc_card *card)
M
Mark Brown 已提交
3788
{
3789
	int i, j, ret;
3790

M
Mark Brown 已提交
3791 3792 3793
	if (!card->name || !card->dev)
		return -EINVAL;

3794 3795 3796
	for (i = 0; i < card->num_links; i++) {
		struct snd_soc_dai_link *link = &card->dai_link[i];

3797 3798 3799 3800
		ret = snd_soc_init_multicodec(card, link);
		if (ret) {
			dev_err(card->dev, "ASoC: failed to init multicodec\n");
			return ret;
3801
		}
3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819

		for (j = 0; j < link->num_codecs; j++) {
			/*
			 * Codec must be specified by 1 of name or OF node,
			 * not both or neither.
			 */
			if (!!link->codecs[j].name ==
			    !!link->codecs[j].of_node) {
				dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
					link->name);
				return -EINVAL;
			}
			/* Codec DAI name must be specified */
			if (!link->codecs[j].dai_name) {
				dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
					link->name);
				return -EINVAL;
			}
3820
		}
3821 3822 3823 3824 3825 3826

		/*
		 * Platform may be specified by either name or OF node, but
		 * can be left unspecified, and a dummy platform will be used.
		 */
		if (link->platform_name && link->platform_of_node) {
3827 3828 3829
			dev_err(card->dev,
				"ASoC: Both platform name/of_node are set for %s\n",
				link->name);
3830 3831 3832 3833
			return -EINVAL;
		}

		/*
3834 3835 3836 3837 3838
		 * CPU device may be specified by either name or OF node, but
		 * can be left unspecified, and will be matched based on DAI
		 * name alone..
		 */
		if (link->cpu_name && link->cpu_of_node) {
3839 3840 3841
			dev_err(card->dev,
				"ASoC: Neither/both cpu name/of_node are set for %s\n",
				link->name);
3842 3843 3844 3845 3846
			return -EINVAL;
		}
		/*
		 * At least one of CPU DAI name or CPU device name/node must be
		 * specified
3847
		 */
3848 3849
		if (!link->cpu_dai_name &&
		    !(link->cpu_name || link->cpu_of_node)) {
3850 3851 3852
			dev_err(card->dev,
				"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
				link->name);
3853 3854 3855 3856
			return -EINVAL;
		}
	}

M
Mark Brown 已提交
3857 3858
	dev_set_drvdata(card->dev, card);

3859 3860
	snd_soc_initialize_card_lists(card);

3861 3862
	soc_init_card_debugfs(card);

3863 3864 3865 3866
	card->rtd = devm_kzalloc(card->dev,
				 sizeof(struct snd_soc_pcm_runtime) *
				 (card->num_links + card->num_aux_devs),
				 GFP_KERNEL);
3867 3868
	if (card->rtd == NULL)
		return -ENOMEM;
3869
	card->num_rtd = 0;
3870
	card->rtd_aux = &card->rtd[card->num_links];
3871

3872 3873
	for (i = 0; i < card->num_links; i++) {
		card->rtd[i].card = card;
3874
		card->rtd[i].dai_link = &card->dai_link[i];
3875 3876 3877 3878 3879 3880
		card->rtd[i].codec_dais = devm_kzalloc(card->dev,
					sizeof(struct snd_soc_dai *) *
					(card->rtd[i].dai_link->num_codecs),
					GFP_KERNEL);
		if (card->rtd[i].codec_dais == NULL)
			return -ENOMEM;
3881 3882 3883 3884
	}

	for (i = 0; i < card->num_aux_devs; i++)
		card->rtd_aux[i].card = card;
3885

3886
	INIT_LIST_HEAD(&card->dapm_dirty);
M
Mark Brown 已提交
3887
	card->instantiated = 0;
3888
	mutex_init(&card->mutex);
3889
	mutex_init(&card->dapm_mutex);
M
Mark Brown 已提交
3890

3891 3892 3893
	ret = snd_soc_instantiate_card(card);
	if (ret != 0)
		soc_cleanup_card_debugfs(card);
M
Mark Brown 已提交
3894

3895 3896
	/* deactivate pins to sleep state */
	for (i = 0; i < card->num_rtd; i++) {
3897 3898 3899 3900 3901 3902 3903 3904 3905 3906
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
		struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
		int j;

		for (j = 0; j < rtd->num_codecs; j++) {
			struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
			if (!codec_dai->active)
				pinctrl_pm_select_sleep_state(codec_dai->dev);
		}

3907 3908 3909 3910
		if (!cpu_dai->active)
			pinctrl_pm_select_sleep_state(cpu_dai->dev);
	}

3911
	return ret;
M
Mark Brown 已提交
3912
}
3913
EXPORT_SYMBOL_GPL(snd_soc_register_card);
M
Mark Brown 已提交
3914 3915 3916 3917

/**
 * snd_soc_unregister_card - Unregister a card with the ASoC core
 *
M
Mark Brown 已提交
3918
 * @card: Card to unregister
M
Mark Brown 已提交
3919 3920
 *
 */
3921
int snd_soc_unregister_card(struct snd_soc_card *card)
M
Mark Brown 已提交
3922
{
3923 3924
	if (card->instantiated)
		soc_cleanup_card_resources(card);
3925
	dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
M
Mark Brown 已提交
3926 3927 3928

	return 0;
}
3929
EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
M
Mark Brown 已提交
3930

3931 3932 3933 3934
/*
 * Simplify DAI link configuration by removing ".-1" from device names
 * and sanitizing names.
 */
3935
static char *fmt_single_name(struct device *dev, int *id)
3936 3937 3938 3939 3940 3941 3942
{
	char *found, name[NAME_SIZE];
	int id1, id2;

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

3943
	strlcpy(name, dev_name(dev), NAME_SIZE);
3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961

	/* 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 */
3962
			*id = ((id1 & 0xffff) << 16) + id2;
3963 3964 3965

			/* sanitize component name for DAI link creation */
			snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3966
			strlcpy(name, tmp, NAME_SIZE);
3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981
		} 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) {
3982 3983 3984
		dev_err(dev,
			"ASoC: error - multiple DAI %s registered with no name\n",
			dev_name(dev));
3985 3986 3987 3988 3989 3990
		return NULL;
	}

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

M
Mark Brown 已提交
3991
/**
3992
 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
M
Mark Brown 已提交
3993
 *
3994
 * @component: The component for which the DAIs should be unregistered
M
Mark Brown 已提交
3995
 */
3996
static void snd_soc_unregister_dais(struct snd_soc_component *component)
M
Mark Brown 已提交
3997
{
L
Lars-Peter Clausen 已提交
3998
	struct snd_soc_dai *dai, *_dai;
M
Mark Brown 已提交
3999

L
Lars-Peter Clausen 已提交
4000
	list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
4001 4002
		dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
			dai->name);
L
Lars-Peter Clausen 已提交
4003
		list_del(&dai->list);
4004
		kfree(dai->name);
4005 4006
		kfree(dai);
	}
M
Mark Brown 已提交
4007 4008 4009
}

/**
4010
 * snd_soc_register_dais - Register a DAI with the ASoC core
M
Mark Brown 已提交
4011
 *
4012 4013
 * @component: The component the DAIs are registered for
 * @dai_drv: DAI driver to use for the DAIs
M
Mark Brown 已提交
4014
 * @count: Number of DAIs
4015 4016
 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
 *                     parent's name.
M
Mark Brown 已提交
4017
 */
4018
static int snd_soc_register_dais(struct snd_soc_component *component,
4019 4020
	struct snd_soc_dai_driver *dai_drv, size_t count,
	bool legacy_dai_naming)
M
Mark Brown 已提交
4021
{
4022
	struct device *dev = component->dev;
4023
	struct snd_soc_dai *dai;
4024 4025
	unsigned int i;
	int ret;
4026

4027
	dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
M
Mark Brown 已提交
4028

4029 4030 4031
	component->dai_drv = dai_drv;
	component->num_dai = count;

M
Mark Brown 已提交
4032
	for (i = 0; i < count; i++) {
4033 4034

		dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
4035 4036 4037 4038
		if (dai == NULL) {
			ret = -ENOMEM;
			goto err;
		}
4039

4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056
		/*
		 * Back in the old days when we still had component-less DAIs,
		 * instead of having a static name, component-less DAIs would
		 * inherit the name of the parent device so it is possible to
		 * register multiple instances of the DAI. We still need to keep
		 * the same naming style even though those DAIs are not
		 * component-less anymore.
		 */
		if (count == 1 && legacy_dai_naming) {
			dai->name = fmt_single_name(dev, &dai->id);
		} else {
			dai->name = fmt_multiple_name(dev, &dai_drv[i]);
			if (dai_drv[i].id)
				dai->id = dai_drv[i].id;
			else
				dai->id = i;
		}
4057 4058
		if (dai->name == NULL) {
			kfree(dai);
4059
			ret = -ENOMEM;
M
Mark Brown 已提交
4060
			goto err;
4061 4062
		}

4063
		dai->component = component;
4064 4065 4066 4067 4068
		dai->dev = dev;
		dai->driver = &dai_drv[i];
		if (!dai->driver->ops)
			dai->driver->ops = &null_dai_ops;

4069
		list_add(&dai->list, &component->dai_list);
4070

4071
		dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
M
Mark Brown 已提交
4072 4073 4074 4075 4076
	}

	return 0;

err:
4077
	snd_soc_unregister_dais(component);
M
Mark Brown 已提交
4078 4079 4080 4081

	return ret;
}

4082 4083
static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
	enum snd_soc_dapm_type type, int subseq)
4084
{
4085
	struct snd_soc_component *component = dapm->component;
4086

4087 4088
	component->driver->seq_notifier(component, type, subseq);
}
4089

4090 4091 4092 4093
static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
	int event)
{
	struct snd_soc_component *component = dapm->component;
4094

4095 4096
	return component->driver->stream_event(component, event);
}
4097

4098 4099
static int snd_soc_component_initialize(struct snd_soc_component *component,
	const struct snd_soc_component_driver *driver, struct device *dev)
4100
{
4101 4102
	struct snd_soc_dapm_context *dapm;

4103 4104 4105
	component->name = fmt_single_name(dev, &component->id);
	if (!component->name) {
		dev_err(dev, "ASoC: Failed to allocate name\n");
4106 4107 4108
		return -ENOMEM;
	}

4109 4110
	component->dev = dev;
	component->driver = driver;
4111

4112 4113 4114 4115 4116 4117 4118
	if (!component->dapm_ptr)
		component->dapm_ptr = &component->dapm;

	dapm = component->dapm_ptr;
	dapm->dev = dev;
	dapm->component = component;
	dapm->bias_level = SND_SOC_BIAS_OFF;
4119 4120 4121 4122
	if (driver->seq_notifier)
		dapm->seq_notifier = snd_soc_component_seq_notifier;
	if (driver->stream_event)
		dapm->stream_event = snd_soc_component_stream_event;
4123

4124 4125
	INIT_LIST_HEAD(&component->dai_list);
	mutex_init(&component->io_mutex);
4126

4127 4128
	return 0;
}
4129

4130 4131 4132 4133
static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
{
	list_add(&component->list, &component_list);
}
4134

4135 4136
static void snd_soc_component_add(struct snd_soc_component *component)
{
4137
	mutex_lock(&client_mutex);
4138
	snd_soc_component_add_unlocked(component);
4139
	mutex_unlock(&client_mutex);
4140
}
4141

4142 4143 4144 4145 4146
static void snd_soc_component_cleanup(struct snd_soc_component *component)
{
	snd_soc_unregister_dais(component);
	kfree(component->name);
}
4147

4148 4149 4150 4151
static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
{
	list_del(&component->list);
}
4152

4153 4154 4155 4156 4157
static void snd_soc_component_del(struct snd_soc_component *component)
{
	mutex_lock(&client_mutex);
	snd_soc_component_del_unlocked(component);
	mutex_unlock(&client_mutex);
4158 4159 4160 4161 4162 4163 4164 4165
}

int snd_soc_register_component(struct device *dev,
			       const struct snd_soc_component_driver *cmpnt_drv,
			       struct snd_soc_dai_driver *dai_drv,
			       int num_dai)
{
	struct snd_soc_component *cmpnt;
4166
	int ret;
4167

4168
	cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
4169 4170 4171 4172 4173
	if (!cmpnt) {
		dev_err(dev, "ASoC: Failed to allocate memory\n");
		return -ENOMEM;
	}

4174 4175 4176 4177
	ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
	if (ret)
		goto err_free;

4178
	cmpnt->ignore_pmdown_time = true;
4179
	cmpnt->registered_as_component = true;
4180

4181 4182 4183 4184 4185
	ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
	if (ret < 0) {
		dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
		goto err_cleanup;
	}
4186

4187
	snd_soc_component_add(cmpnt);
4188

4189
	return 0;
4190

4191 4192 4193 4194 4195
err_cleanup:
	snd_soc_component_cleanup(cmpnt);
err_free:
	kfree(cmpnt);
	return ret;
4196
}
4197
EXPORT_SYMBOL_GPL(snd_soc_register_component);
4198

4199 4200 4201 4202 4203 4204 4205 4206 4207
/**
 * snd_soc_unregister_component - Unregister a component from the ASoC core
 *
 */
void snd_soc_unregister_component(struct device *dev)
{
	struct snd_soc_component *cmpnt;

	list_for_each_entry(cmpnt, &component_list, list) {
4208
		if (dev == cmpnt->dev && cmpnt->registered_as_component)
4209 4210 4211 4212 4213
			goto found;
	}
	return;

found:
4214 4215 4216
	snd_soc_component_del(cmpnt);
	snd_soc_component_cleanup(cmpnt);
	kfree(cmpnt);
4217 4218 4219
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_component);

4220 4221 4222 4223
static int snd_soc_platform_drv_write(struct snd_soc_component *component,
	unsigned int reg, unsigned int val)
{
	struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
4224

4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235
	return platform->driver->write(platform, reg, val);
}

static int snd_soc_platform_drv_read(struct snd_soc_component *component,
	unsigned int reg, unsigned int *val)
{
	struct snd_soc_platform *platform = snd_soc_component_to_platform(component);

	*val = platform->driver->read(platform, reg);

	return 0;
4236 4237
}

M
Mark Brown 已提交
4238
/**
4239 4240 4241 4242
 * snd_soc_add_platform - Add a platform to the ASoC core
 * @dev: The parent device for the platform
 * @platform: The platform to add
 * @platform_driver: The driver for the platform
M
Mark Brown 已提交
4243
 */
4244
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4245
		const struct snd_soc_platform_driver *platform_drv)
M
Mark Brown 已提交
4246
{
4247 4248
	int ret;

4249 4250 4251 4252
	ret = snd_soc_component_initialize(&platform->component,
			&platform_drv->component_driver, dev);
	if (ret)
		return ret;
M
Mark Brown 已提交
4253

4254 4255
	platform->dev = dev;
	platform->driver = platform_drv;
4256 4257 4258 4259
	if (platform_drv->write)
		platform->component.write = snd_soc_platform_drv_write;
	if (platform_drv->read)
		platform->component.read = snd_soc_platform_drv_read;
M
Mark Brown 已提交
4260 4261

	mutex_lock(&client_mutex);
4262
	snd_soc_component_add_unlocked(&platform->component);
M
Mark Brown 已提交
4263 4264 4265
	list_add(&platform->list, &platform_list);
	mutex_unlock(&client_mutex);

4266 4267
	dev_dbg(dev, "ASoC: Registered platform '%s'\n",
		platform->component.name);
M
Mark Brown 已提交
4268 4269 4270

	return 0;
}
4271
EXPORT_SYMBOL_GPL(snd_soc_add_platform);
M
Mark Brown 已提交
4272 4273

/**
4274
 * snd_soc_register_platform - Register a platform with the ASoC core
M
Mark Brown 已提交
4275
 *
4276
 * @platform: platform to register
M
Mark Brown 已提交
4277
 */
4278 4279
int snd_soc_register_platform(struct device *dev,
		const struct snd_soc_platform_driver *platform_drv)
M
Mark Brown 已提交
4280
{
4281
	struct snd_soc_platform *platform;
4282
	int ret;
4283

4284
	dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4285

4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303
	platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
	if (platform == NULL)
		return -ENOMEM;

	ret = snd_soc_add_platform(dev, platform, platform_drv);
	if (ret)
		kfree(platform);

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_register_platform);

/**
 * snd_soc_remove_platform - Remove a platform from the ASoC core
 * @platform: the platform to remove
 */
void snd_soc_remove_platform(struct snd_soc_platform *platform)
{
4304

M
Mark Brown 已提交
4305 4306
	mutex_lock(&client_mutex);
	list_del(&platform->list);
4307
	snd_soc_component_del_unlocked(&platform->component);
M
Mark Brown 已提交
4308 4309
	mutex_unlock(&client_mutex);

4310 4311
	snd_soc_component_cleanup(&platform->component);

4312
	dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4313
		platform->component.name);
4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343
}
EXPORT_SYMBOL_GPL(snd_soc_remove_platform);

struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
{
	struct snd_soc_platform *platform;

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

	return NULL;
}
EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);

/**
 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
 *
 * @platform: platform to unregister
 */
void snd_soc_unregister_platform(struct device *dev)
{
	struct snd_soc_platform *platform;

	platform = snd_soc_lookup_platform(dev);
	if (!platform)
		return;

	snd_soc_remove_platform(platform);
4344
	kfree(platform);
M
Mark Brown 已提交
4345 4346 4347
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);

4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380
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];
}

4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398
static int snd_soc_codec_drv_write(struct snd_soc_component *component,
	unsigned int reg, unsigned int val)
{
	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);

	return codec->driver->write(codec, reg, val);
}

static int snd_soc_codec_drv_read(struct snd_soc_component *component,
	unsigned int reg, unsigned int *val)
{
	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);

	*val = codec->driver->read(codec, reg);

	return 0;
}

4399 4400 4401 4402 4403 4404 4405 4406
static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
	enum snd_soc_bias_level level)
{
	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);

	return codec->driver->set_bias_level(codec, level);
}

M
Mark Brown 已提交
4407 4408 4409
/**
 * snd_soc_register_codec - Register a codec with the ASoC core
 *
M
Mark Brown 已提交
4410
 * @codec: codec to register
M
Mark Brown 已提交
4411
 */
4412
int snd_soc_register_codec(struct device *dev,
4413 4414 4415
			   const struct snd_soc_codec_driver *codec_drv,
			   struct snd_soc_dai_driver *dai_drv,
			   int num_dai)
M
Mark Brown 已提交
4416
{
4417
	struct snd_soc_codec *codec;
4418
	struct snd_soc_dai *dai;
4419
	struct regmap *regmap;
4420
	int ret, i;
4421

4422 4423 4424 4425 4426
	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
4427

4428 4429
	codec->component.dapm_ptr = &codec->dapm;

4430 4431 4432 4433
	ret = snd_soc_component_initialize(&codec->component,
			&codec_drv->component_driver, dev);
	if (ret)
		goto err_free;
4434

4435 4436 4437 4438
	if (codec_drv->write)
		codec->component.write = snd_soc_codec_drv_write;
	if (codec_drv->read)
		codec->component.read = snd_soc_codec_drv_read;
4439
	codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
L
Liam Girdwood 已提交
4440
	codec->dapm.codec = codec;
4441 4442
	if (codec_drv->seq_notifier)
		codec->dapm.seq_notifier = codec_drv->seq_notifier;
4443 4444
	if (codec_drv->set_bias_level)
		codec->dapm.set_bias_level = snd_soc_codec_set_bias_level;
4445 4446
	codec->dev = dev;
	codec->driver = codec_drv;
4447
	codec->component.val_bytes = codec_drv->reg_word_size;
4448
	mutex_init(&codec->mutex);
L
Liam Girdwood 已提交
4449

4450
	if (!codec->component.write) {
4451 4452 4453 4454 4455 4456
		if (codec_drv->get_regmap)
			regmap = codec_drv->get_regmap(dev);
		else
			regmap = dev_get_regmap(dev, NULL);

		if (regmap) {
4457 4458 4459
			ret = snd_soc_component_init_io(&codec->component,
				regmap);
			if (ret) {
4460 4461 4462
				dev_err(codec->dev,
						"Failed to set cache I/O:%d\n",
						ret);
4463
				goto err_cleanup;
4464 4465 4466 4467
			}
		}
	}

4468 4469 4470 4471 4472
	for (i = 0; i < num_dai; i++) {
		fixup_codec_formats(&dai_drv[i].playback);
		fixup_codec_formats(&dai_drv[i].capture);
	}

4473
	ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
4474
	if (ret < 0) {
4475 4476
		dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
		goto err_cleanup;
4477
	}
4478

4479 4480
	list_for_each_entry(dai, &codec->component.dai_list, list)
		dai->codec = codec;
4481

4482
	mutex_lock(&client_mutex);
4483
	snd_soc_component_add_unlocked(&codec->component);
4484
	list_add(&codec->list, &codec_list);
4485 4486
	mutex_unlock(&client_mutex);

4487 4488
	dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
		codec->component.name);
M
Mark Brown 已提交
4489
	return 0;
4490

4491 4492 4493
err_cleanup:
	snd_soc_component_cleanup(&codec->component);
err_free:
4494 4495
	kfree(codec);
	return ret;
M
Mark Brown 已提交
4496 4497 4498 4499 4500 4501
}
EXPORT_SYMBOL_GPL(snd_soc_register_codec);

/**
 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
 *
M
Mark Brown 已提交
4502
 * @codec: codec to unregister
M
Mark Brown 已提交
4503
 */
4504
void snd_soc_unregister_codec(struct device *dev)
M
Mark Brown 已提交
4505
{
4506 4507 4508 4509 4510 4511 4512 4513 4514 4515
	struct snd_soc_codec *codec;

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

found:

M
Mark Brown 已提交
4516 4517
	mutex_lock(&client_mutex);
	list_del(&codec->list);
4518
	snd_soc_component_del_unlocked(&codec->component);
M
Mark Brown 已提交
4519 4520
	mutex_unlock(&client_mutex);

4521 4522
	dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
			codec->component.name);
4523

4524
	snd_soc_component_cleanup(&codec->component);
4525
	snd_soc_cache_exit(codec);
4526
	kfree(codec);
M
Mark Brown 已提交
4527 4528 4529
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);

4530 4531 4532 4533
/* Retrieve a card's name from device tree */
int snd_soc_of_parse_card_name(struct snd_soc_card *card,
			       const char *propname)
{
4534
	struct device_node *np;
4535 4536
	int ret;

4537 4538 4539 4540 4541 4542 4543
	if (!card->dev) {
		pr_err("card->dev is not set before calling %s\n", __func__);
		return -EINVAL;
	}

	np = card->dev->of_node;

4544 4545 4546 4547 4548 4549 4550 4551
	ret = of_property_read_string_index(np, propname, 0, &card->name);
	/*
	 * EINVAL means the property does not exist. This is fine providing
	 * card->name was previously set, which is checked later in
	 * snd_soc_register_card.
	 */
	if (ret < 0 && ret != -EINVAL) {
		dev_err(card->dev,
4552
			"ASoC: Property '%s' could not be read: %d\n",
4553 4554 4555 4556 4557 4558 4559 4560
			propname, ret);
		return ret;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);

4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647
static const struct snd_soc_dapm_widget simple_widgets[] = {
	SND_SOC_DAPM_MIC("Microphone", NULL),
	SND_SOC_DAPM_LINE("Line", NULL),
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_SPK("Speaker", NULL),
};

int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
					  const char *propname)
{
	struct device_node *np = card->dev->of_node;
	struct snd_soc_dapm_widget *widgets;
	const char *template, *wname;
	int i, j, num_widgets, ret;

	num_widgets = of_property_count_strings(np, propname);
	if (num_widgets < 0) {
		dev_err(card->dev,
			"ASoC: Property '%s' does not exist\n",	propname);
		return -EINVAL;
	}
	if (num_widgets & 1) {
		dev_err(card->dev,
			"ASoC: Property '%s' length is not even\n", propname);
		return -EINVAL;
	}

	num_widgets /= 2;
	if (!num_widgets) {
		dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
			propname);
		return -EINVAL;
	}

	widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
			       GFP_KERNEL);
	if (!widgets) {
		dev_err(card->dev,
			"ASoC: Could not allocate memory for widgets\n");
		return -ENOMEM;
	}

	for (i = 0; i < num_widgets; i++) {
		ret = of_property_read_string_index(np, propname,
			2 * i, &template);
		if (ret) {
			dev_err(card->dev,
				"ASoC: Property '%s' index %d read error:%d\n",
				propname, 2 * i, ret);
			return -EINVAL;
		}

		for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
			if (!strncmp(template, simple_widgets[j].name,
				     strlen(simple_widgets[j].name))) {
				widgets[i] = simple_widgets[j];
				break;
			}
		}

		if (j >= ARRAY_SIZE(simple_widgets)) {
			dev_err(card->dev,
				"ASoC: DAPM widget '%s' is not supported\n",
				template);
			return -EINVAL;
		}

		ret = of_property_read_string_index(np, propname,
						    (2 * i) + 1,
						    &wname);
		if (ret) {
			dev_err(card->dev,
				"ASoC: Property '%s' index %d read error:%d\n",
				propname, (2 * i) + 1, ret);
			return -EINVAL;
		}

		widgets[i].name = wname;
	}

	card->dapm_widgets = widgets;
	card->num_dapm_widgets = num_widgets;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);

4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676
int snd_soc_of_parse_tdm_slot(struct device_node *np,
			      unsigned int *slots,
			      unsigned int *slot_width)
{
	u32 val;
	int ret;

	if (of_property_read_bool(np, "dai-tdm-slot-num")) {
		ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
		if (ret)
			return ret;

		if (slots)
			*slots = val;
	}

	if (of_property_read_bool(np, "dai-tdm-slot-width")) {
		ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
		if (ret)
			return ret;

		if (slot_width)
			*slot_width = val;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);

4677 4678 4679 4680 4681 4682 4683 4684 4685
int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
				   const char *propname)
{
	struct device_node *np = card->dev->of_node;
	int num_routes;
	struct snd_soc_dapm_route *routes;
	int i, ret;

	num_routes = of_property_count_strings(np, propname);
4686
	if (num_routes < 0 || num_routes & 1) {
4687 4688 4689
		dev_err(card->dev,
			"ASoC: Property '%s' does not exist or its length is not even\n",
			propname);
4690 4691 4692 4693
		return -EINVAL;
	}
	num_routes /= 2;
	if (!num_routes) {
4694
		dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4695 4696 4697 4698 4699 4700 4701 4702
			propname);
		return -EINVAL;
	}

	routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
			      GFP_KERNEL);
	if (!routes) {
		dev_err(card->dev,
4703
			"ASoC: Could not allocate DAPM route table\n");
4704 4705 4706 4707 4708 4709 4710
		return -EINVAL;
	}

	for (i = 0; i < num_routes; i++) {
		ret = of_property_read_string_index(np, propname,
			2 * i, &routes[i].sink);
		if (ret) {
4711 4712 4713
			dev_err(card->dev,
				"ASoC: Property '%s' index %d could not be read: %d\n",
				propname, 2 * i, ret);
4714 4715 4716 4717 4718 4719
			return -EINVAL;
		}
		ret = of_property_read_string_index(np, propname,
			(2 * i) + 1, &routes[i].source);
		if (ret) {
			dev_err(card->dev,
4720 4721
				"ASoC: Property '%s' index %d could not be read: %d\n",
				propname, (2 * i) + 1, ret);
4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732
			return -EINVAL;
		}
	}

	card->num_dapm_routes = num_routes;
	card->dapm_routes = routes;

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);

4733
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4734 4735 4736
				     const char *prefix,
				     struct device_node **bitclkmaster,
				     struct device_node **framemaster)
4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776
{
	int ret, i;
	char prop[128];
	unsigned int format = 0;
	int bit, frame;
	const char *str;
	struct {
		char *name;
		unsigned int val;
	} of_fmt_table[] = {
		{ "i2s",	SND_SOC_DAIFMT_I2S },
		{ "right_j",	SND_SOC_DAIFMT_RIGHT_J },
		{ "left_j",	SND_SOC_DAIFMT_LEFT_J },
		{ "dsp_a",	SND_SOC_DAIFMT_DSP_A },
		{ "dsp_b",	SND_SOC_DAIFMT_DSP_B },
		{ "ac97",	SND_SOC_DAIFMT_AC97 },
		{ "pdm",	SND_SOC_DAIFMT_PDM},
		{ "msb",	SND_SOC_DAIFMT_MSB },
		{ "lsb",	SND_SOC_DAIFMT_LSB },
	};

	if (!prefix)
		prefix = "";

	/*
	 * check "[prefix]format = xxx"
	 * SND_SOC_DAIFMT_FORMAT_MASK area
	 */
	snprintf(prop, sizeof(prop), "%sformat", prefix);
	ret = of_property_read_string(np, prop, &str);
	if (ret == 0) {
		for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
			if (strcmp(str, of_fmt_table[i].name) == 0) {
				format |= of_fmt_table[i].val;
				break;
			}
		}
	}

	/*
4777
	 * check "[prefix]continuous-clock"
4778 4779
	 * SND_SOC_DAIFMT_CLOCK_MASK area
	 */
4780 4781 4782 4783 4784
	snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
	if (of_get_property(np, prop, NULL))
		format |= SND_SOC_DAIFMT_CONT;
	else
		format |= SND_SOC_DAIFMT_GATED;
4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818

	/*
	 * check "[prefix]bitclock-inversion"
	 * check "[prefix]frame-inversion"
	 * SND_SOC_DAIFMT_INV_MASK area
	 */
	snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
	bit = !!of_get_property(np, prop, NULL);

	snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
	frame = !!of_get_property(np, prop, NULL);

	switch ((bit << 4) + frame) {
	case 0x11:
		format |= SND_SOC_DAIFMT_IB_IF;
		break;
	case 0x10:
		format |= SND_SOC_DAIFMT_IB_NF;
		break;
	case 0x01:
		format |= SND_SOC_DAIFMT_NB_IF;
		break;
	default:
		/* SND_SOC_DAIFMT_NB_NF is default */
		break;
	}

	/*
	 * check "[prefix]bitclock-master"
	 * check "[prefix]frame-master"
	 * SND_SOC_DAIFMT_MASTER_MASK area
	 */
	snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
	bit = !!of_get_property(np, prop, NULL);
4819 4820
	if (bit && bitclkmaster)
		*bitclkmaster = of_parse_phandle(np, prop, 0);
4821 4822 4823

	snprintf(prop, sizeof(prop), "%sframe-master", prefix);
	frame = !!of_get_property(np, prop, NULL);
4824 4825
	if (frame && framemaster)
		*framemaster = of_parse_phandle(np, prop, 0);
4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845

	switch ((bit << 4) + frame) {
	case 0x11:
		format |= SND_SOC_DAIFMT_CBM_CFM;
		break;
	case 0x10:
		format |= SND_SOC_DAIFMT_CBM_CFS;
		break;
	case 0x01:
		format |= SND_SOC_DAIFMT_CBS_CFM;
		break;
	default:
		format |= SND_SOC_DAIFMT_CBS_CFS;
		break;
	}

	return format;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);

4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864
int snd_soc_of_get_dai_name(struct device_node *of_node,
			    const char **dai_name)
{
	struct snd_soc_component *pos;
	struct of_phandle_args args;
	int ret;

	ret = of_parse_phandle_with_args(of_node, "sound-dai",
					 "#sound-dai-cells", 0, &args);
	if (ret)
		return ret;

	ret = -EPROBE_DEFER;

	mutex_lock(&client_mutex);
	list_for_each_entry(pos, &component_list, list) {
		if (pos->dev->of_node != args.np)
			continue;

4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883
		if (pos->driver->of_xlate_dai_name) {
			ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name);
		} else {
			int id = -1;

			switch (args.args_count) {
			case 0:
				id = 0; /* same as dai_drv[0] */
				break;
			case 1:
				id = args.args[0];
				break;
			default:
				/* not supported */
				break;
			}

			if (id < 0 || id >= pos->num_dai) {
				ret = -EINVAL;
4884
				continue;
4885
			}
X
Xiubo Li 已提交
4886 4887 4888 4889 4890 4891

			ret = 0;

			*dai_name = pos->dai_drv[id].name;
			if (!*dai_name)
				*dai_name = pos->name;
4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903
		}

		break;
	}
	mutex_unlock(&client_mutex);

	of_node_put(args.np);

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);

4904
static int __init snd_soc_init(void)
F
Frank Mandarino 已提交
4905
{
4906
#ifdef CONFIG_DEBUG_FS
4907 4908
	snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
	if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4909
		pr_warn("ASoC: Failed to create debugfs directory\n");
4910
		snd_soc_debugfs_root = NULL;
4911
	}
4912

4913
	if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4914 4915 4916
				 &codec_list_fops))
		pr_warn("ASoC: Failed to create CODEC list debugfs file\n");

4917
	if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
M
Mark Brown 已提交
4918 4919
				 &dai_list_fops))
		pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4920

4921
	if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4922 4923
				 &platform_list_fops))
		pr_warn("ASoC: Failed to create platform list debugfs file\n");
4924 4925
#endif

4926 4927
	snd_soc_util_init();

F
Frank Mandarino 已提交
4928 4929
	return platform_driver_register(&soc_driver);
}
4930
module_init(snd_soc_init);
F
Frank Mandarino 已提交
4931

M
Mark Brown 已提交
4932
static void __exit snd_soc_exit(void)
F
Frank Mandarino 已提交
4933
{
4934 4935
	snd_soc_util_exit();

4936
#ifdef CONFIG_DEBUG_FS
4937
	debugfs_remove_recursive(snd_soc_debugfs_root);
4938
#endif
4939
	platform_driver_unregister(&soc_driver);
F
Frank Mandarino 已提交
4940 4941 4942 4943
}
module_exit(snd_soc_exit);

/* Module information */
4944
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
F
Frank Mandarino 已提交
4945 4946
MODULE_DESCRIPTION("ALSA SoC Core");
MODULE_LICENSE("GPL");
4947
MODULE_ALIAS("platform:soc-audio");