soc-core.c 123.6 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 void soc_init_component_debugfs(struct snd_soc_component *component)
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{
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	if (component->debugfs_prefix) {
		char *name;
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		name = kasprintf(GFP_KERNEL, "%s:%s",
			component->debugfs_prefix, component->name);
		if (name) {
			component->debugfs_root = debugfs_create_dir(name,
				component->card->debugfs_card_root);
			kfree(name);
		}
	} else {
		component->debugfs_root = debugfs_create_dir(component->name,
				component->card->debugfs_card_root);
	}
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	if (!component->debugfs_root) {
		dev_warn(component->dev,
			"ASoC: Failed to create component debugfs directory\n");
		return;
	}
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	snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
		component->debugfs_root);
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	if (component->init_debugfs)
		component->init_debugfs(component);
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}

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static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
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{
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	debugfs_remove_recursive(component->debugfs_root);
}
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static void soc_init_codec_debugfs(struct snd_soc_component *component)
{
	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
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	debugfs_create_bool("cache_sync", 0444, codec->component.debugfs_root,
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			    &codec->cache_sync);

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	codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
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						 codec->component.debugfs_root,
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						 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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}

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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

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#define soc_init_codec_debugfs NULL
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static inline void soc_init_component_debugfs(
	struct snd_soc_component *component)
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{
}

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static inline void soc_cleanup_component_debugfs(
	struct snd_soc_component *component)
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{
}

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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 card is not initialized yet there is nothing to do */
	if (!card->instantiated)
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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);
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		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;
		}
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	}
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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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		snd_soc_dapm_stream_event(&card->rtd[i],
					  SNDRV_PCM_STREAM_PLAYBACK,
					  SND_SOC_DAPM_STREAM_SUSPEND);
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		snd_soc_dapm_stream_event(&card->rtd[i],
					  SNDRV_PCM_STREAM_CAPTURE,
					  SND_SOC_DAPM_STREAM_SUSPEND);
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	}

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

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	/* suspend all CODECs */
637
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
638 639 640
		/* If there are paths active then the CODEC will be held with
		 * bias _ON and should not be suspended. */
		if (!codec->suspended && codec->driver->suspend) {
L
Liam Girdwood 已提交
641
			switch (codec->dapm.bias_level) {
642
			case SND_SOC_BIAS_STANDBY:
643 644 645 646 647 648 649 650
				/*
				 * 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,
651
						"ASoC: idle_bias_off CODEC on over suspend\n");
652 653
					break;
				}
654
			case SND_SOC_BIAS_OFF:
655
				codec->driver->suspend(codec);
656
				codec->suspended = 1;
657
				codec->cache_sync = 1;
658 659
				if (codec->component.regmap)
					regcache_mark_dirty(codec->component.regmap);
660 661
				/* deactivate pins to sleep state */
				pinctrl_pm_select_sleep_state(codec->dev);
662 663
				break;
			default:
664 665
				dev_dbg(codec->dev,
					"ASoC: CODEC is on over suspend\n");
666 667
				break;
			}
668 669
		}
	}
F
Frank Mandarino 已提交
670

671 672
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
673

674
		if (card->rtd[i].dai_link->ignore_suspend)
675 676
			continue;

677 678
		if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
			cpu_dai->driver->suspend(cpu_dai);
679 680 681

		/* deactivate pins to sleep state */
		pinctrl_pm_select_sleep_state(cpu_dai->dev);
F
Frank Mandarino 已提交
682 683
	}

684
	if (card->suspend_post)
685
		card->suspend_post(card);
F
Frank Mandarino 已提交
686 687 688

	return 0;
}
689
EXPORT_SYMBOL_GPL(snd_soc_suspend);
F
Frank Mandarino 已提交
690

691 692 693 694
/* 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
695
{
696 697
	struct snd_soc_card *card =
			container_of(work, struct snd_soc_card, deferred_resume_work);
698
	struct snd_soc_codec *codec;
699
	int i, j;
F
Frank Mandarino 已提交
700

701 702 703 704
	/* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
	 * so userspace apps are blocked from touching us
	 */

705
	dev_dbg(card->dev, "ASoC: starting resume work\n");
706

707
	/* Bring us up into D2 so that DAPM starts enabling things */
708
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
709

710
	if (card->resume_pre)
711
		card->resume_pre(card);
F
Frank Mandarino 已提交
712

713 714 715
	/* resume AC97 DAIs */
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
716

717
		if (card->rtd[i].dai_link->ignore_suspend)
718 719
			continue;

720 721 722 723
		if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
			cpu_dai->driver->resume(cpu_dai);
	}

724
	list_for_each_entry(codec, &card->codec_dev_list, card_list) {
725 726 727 728 729
		/* If the CODEC was idle over suspend then it will have been
		 * left with bias OFF or STANDBY and suspended so we must now
		 * resume.  Otherwise the suspend was suppressed.
		 */
		if (codec->driver->resume && codec->suspended) {
L
Liam Girdwood 已提交
730
			switch (codec->dapm.bias_level) {
731 732 733 734 735 736
			case SND_SOC_BIAS_STANDBY:
			case SND_SOC_BIAS_OFF:
				codec->driver->resume(codec);
				codec->suspended = 0;
				break;
			default:
737 738
				dev_dbg(codec->dev,
					"ASoC: CODEC was on over suspend\n");
739 740
				break;
			}
741 742
		}
	}
F
Frank Mandarino 已提交
743

744
	for (i = 0; i < card->num_rtd; i++) {
745

746
		if (card->rtd[i].dai_link->ignore_suspend)
747 748
			continue;

749
		snd_soc_dapm_stream_event(&card->rtd[i],
750
					  SNDRV_PCM_STREAM_PLAYBACK,
751
					  SND_SOC_DAPM_STREAM_RESUME);
752

753
		snd_soc_dapm_stream_event(&card->rtd[i],
754
					  SNDRV_PCM_STREAM_CAPTURE,
755
					  SND_SOC_DAPM_STREAM_RESUME);
F
Frank Mandarino 已提交
756 757
	}

758
	/* unmute any active DACs */
759
	for (i = 0; i < card->num_rtd; i++) {
760

761
		if (card->rtd[i].dai_link->ignore_suspend)
762 763
			continue;

764 765 766 767 768 769 770
		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);
		}
F
Frank Mandarino 已提交
771 772
	}

773 774 775
	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;
776

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

780 781 782 783 784 785
		if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
			cpu_dai->driver->resume(cpu_dai);
		if (platform->driver->resume && platform->suspended) {
			platform->driver->resume(cpu_dai);
			platform->suspended = 0;
		}
F
Frank Mandarino 已提交
786 787
	}

788
	if (card->resume_post)
789
		card->resume_post(card);
F
Frank Mandarino 已提交
790

791
	dev_dbg(card->dev, "ASoC: resume work completed\n");
792 793

	/* userspace can access us now we are back as we were before */
794
	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
795 796 797 798

	/* Recheck all analogue paths too */
	dapm_mark_io_dirty(&card->dapm);
	snd_soc_dapm_sync(&card->dapm);
799 800 801
}

/* powers up audio subsystem after a suspend */
802
int snd_soc_resume(struct device *dev)
803
{
804
	struct snd_soc_card *card = dev_get_drvdata(dev);
805
	int i, ac97_control = 0;
806

807 808
	/* If the card is not initialized yet there is nothing to do */
	if (!card->instantiated)
809 810
		return 0;

811 812
	/* activate pins from sleep state */
	for (i = 0; i < card->num_rtd; i++) {
813 814 815 816 817
		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;

818 819
		if (cpu_dai->active)
			pinctrl_pm_select_default_state(cpu_dai->dev);
820 821 822 823 824 825

		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);
		}
826 827
	}

828 829 830 831 832
	/* 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.
	 */
833 834
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
835 836 837
		ac97_control |= cpu_dai->driver->ac97_control;
	}
	if (ac97_control) {
838
		dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
839 840
		soc_resume_deferred(&card->deferred_resume_work);
	} else {
841
		dev_dbg(dev, "ASoC: Scheduling resume work\n");
842
		if (!schedule_work(&card->deferred_resume_work))
843
			dev_err(dev, "ASoC: resume work item may be lost\n");
844
	}
845

F
Frank Mandarino 已提交
846 847
	return 0;
}
848
EXPORT_SYMBOL_GPL(snd_soc_resume);
F
Frank Mandarino 已提交
849
#else
850 851
#define snd_soc_suspend NULL
#define snd_soc_resume NULL
F
Frank Mandarino 已提交
852 853
#endif

854
static const struct snd_soc_dai_ops null_dai_ops = {
855 856
};

857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873
static struct snd_soc_component *soc_find_component(
	const struct device_node *of_node, const char *name)
{
	struct snd_soc_component *component;

	list_for_each_entry(component, &component_list, list) {
		if (of_node) {
			if (component->dev->of_node == of_node)
				return component;
		} else if (strcmp(component->name, name) == 0) {
			return component;
		}
	}

	return NULL;
}

874 875
static struct snd_soc_dai *snd_soc_find_dai(
	const struct snd_soc_dai_link_component *dlc)
876
{
877 878
	struct snd_soc_component *component;
	struct snd_soc_dai *dai;
879

880 881 882 883 884 885 886 887
	/* Find CPU DAI from registered DAIs*/
	list_for_each_entry(component, &component_list, list) {
		if (dlc->of_node && component->dev->of_node != dlc->of_node)
			continue;
		if (dlc->name && strcmp(dev_name(component->dev), dlc->name))
			continue;
		list_for_each_entry(dai, &component->dai_list, list) {
			if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
888 889
				continue;

890
			return dai;
891 892 893 894 895 896
		}
	}

	return NULL;
}

897
static int soc_bind_dai_link(struct snd_soc_card *card, int num)
F
Frank Mandarino 已提交
898
{
899 900
	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
901
	struct snd_soc_dai_link_component *codecs = dai_link->codecs;
902
	struct snd_soc_dai_link_component cpu_dai_component;
903
	struct snd_soc_dai **codec_dais = rtd->codec_dais;
904
	struct snd_soc_platform *platform;
905
	const char *platform_name;
906
	int i;
907

908
	dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
909

910 911 912 913
	cpu_dai_component.name = dai_link->cpu_name;
	cpu_dai_component.of_node = dai_link->cpu_of_node;
	cpu_dai_component.dai_name = dai_link->cpu_dai_name;
	rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
914
	if (!rtd->cpu_dai) {
915
		dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
916 917
			dai_link->cpu_dai_name);
		return -EPROBE_DEFER;
918 919
	}

920
	rtd->num_codecs = dai_link->num_codecs;
921

922 923
	/* Find CODEC from registered CODECs */
	for (i = 0; i < rtd->num_codecs; i++) {
924
		codec_dais[i] = snd_soc_find_dai(&codecs[i]);
925 926 927 928 929
		if (!codec_dais[i]) {
			dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
				codecs[i].dai_name);
			return -EPROBE_DEFER;
		}
930 931
	}

932 933 934 935
	/* Single codec links expect codec and codec_dai in runtime data */
	rtd->codec_dai = codec_dais[0];
	rtd->codec = rtd->codec_dai->codec;

936 937
	/* if there's no platform we match on the empty platform */
	platform_name = dai_link->platform_name;
938
	if (!platform_name && !dai_link->platform_of_node)
939 940
		platform_name = "snd-soc-dummy";

941
	/* find one from the set of registered platforms */
942
	list_for_each_entry(platform, &platform_list, list) {
943 944 945 946 947
		if (dai_link->platform_of_node) {
			if (platform->dev->of_node !=
			    dai_link->platform_of_node)
				continue;
		} else {
948
			if (strcmp(platform->component.name, platform_name))
949 950
				continue;
		}
951 952

		rtd->platform = platform;
953
	}
954
	if (!rtd->platform) {
955
		dev_err(card->dev, "ASoC: platform %s not registered\n",
956
			dai_link->platform_name);
957
		return -EPROBE_DEFER;
958
	}
959 960 961 962

	card->num_rtd++;

	return 0;
963 964
}

965
static void soc_remove_component(struct snd_soc_component *component)
966
{
967 968 969
	if (!component->probed)
		return;

970 971 972
	/* This is a HACK and will be removed soon */
	if (component->codec)
		list_del(&component->codec->card_list);
973

974 975
	if (component->remove)
		component->remove(component);
976

977
	snd_soc_dapm_free(snd_soc_component_get_dapm(component));
978

979 980 981
	soc_cleanup_component_debugfs(component);
	component->probed = 0;
	module_put(component->dev->driver->owner);
982 983
}

984
static void soc_remove_dai(struct snd_soc_dai *dai, int order)
985 986 987
{
	int err;

988 989 990 991
	if (dai && dai->probed &&
			dai->driver->remove_order == order) {
		if (dai->driver->remove) {
			err = dai->driver->remove(dai);
992
			if (err < 0)
993
				dev_err(dai->dev,
994
					"ASoC: failed to remove %s: %d\n",
995
					dai->name, err);
996
		}
997
		dai->probed = 0;
998
	}
999 1000 1001 1002 1003
}

static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1004
	int i;
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014

	/* 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 */
1015
	for (i = 0; i < rtd->num_codecs; i++)
1016
		soc_remove_dai(rtd->codec_dais[i], order);
1017

1018
	soc_remove_dai(rtd->cpu_dai, order);
1019
}
F
Frank Mandarino 已提交
1020

1021 1022 1023 1024 1025 1026
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;
1027
	struct snd_soc_component *component;
1028
	int i;
1029 1030

	/* remove the platform */
1031
	if (platform && platform->component.driver->remove_order == order)
1032
		soc_remove_component(&platform->component);
1033 1034

	/* remove the CODEC-side CODEC */
1035
	for (i = 0; i < rtd->num_codecs; i++) {
1036
		component = rtd->codec_dais[i]->component;
1037
		if (component->driver->remove_order == order)
1038
			soc_remove_component(component);
1039 1040 1041 1042
	}

	/* remove any CPU-side CODEC */
	if (cpu_dai) {
1043
		if (cpu_dai->component->driver->remove_order == order)
1044
			soc_remove_component(cpu_dai->component);
1045 1046 1047
	}
}

1048 1049
static void soc_remove_dai_links(struct snd_soc_card *card)
{
1050
	int dai, order;
1051

1052 1053 1054
	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (dai = 0; dai < card->num_rtd; dai++)
1055 1056 1057 1058 1059 1060 1061
			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);
1062
	}
1063

1064 1065 1066
	card->num_rtd = 0;
}

1067
static void soc_set_name_prefix(struct snd_soc_card *card,
1068
				struct snd_soc_component *component)
1069 1070 1071
{
	int i;

1072
	if (card->codec_conf == NULL)
1073 1074
		return;

1075 1076
	for (i = 0; i < card->num_configs; i++) {
		struct snd_soc_codec_conf *map = &card->codec_conf[i];
1077
		if (map->of_node && component->dev->of_node != map->of_node)
1078
			continue;
1079
		if (map->dev_name && strcmp(component->name, map->dev_name))
1080
			continue;
1081
		component->name_prefix = map->name_prefix;
1082
		break;
1083 1084 1085
	}
}

1086 1087
static int soc_probe_component(struct snd_soc_card *card,
	struct snd_soc_component *component)
1088
{
1089 1090
	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
	struct snd_soc_component *dai_component, *component2;
1091
	struct snd_soc_dai *dai;
1092
	int ret;
1093

1094 1095 1096
	if (component->probed)
		return 0;

1097 1098 1099
	component->card = card;
	dapm->card = card;
	soc_set_name_prefix(card, component);
1100

1101
	if (!try_module_get(component->dev->driver->owner))
1102 1103
		return -ENODEV;

1104
	soc_init_component_debugfs(component);
1105

1106 1107 1108
	if (component->dapm_widgets) {
		ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
			component->num_dapm_widgets);
1109 1110

		if (ret != 0) {
1111
			dev_err(component->dev,
1112 1113 1114 1115
				"Failed to create new controls %d\n", ret);
			goto err_probe;
		}
	}
1116

1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
	/*
	 * This is rather ugly, but certain platforms expect that the DAPM
	 * widgets for the DAIs for components with the same parent device are
	 * created in the platforms DAPM context. Until that is fixed we need to
	 * keep this.
	 */
	if (component->steal_sibling_dai_widgets) {
		dai_component = NULL;
		list_for_each_entry(component2, &component_list, list) {
			if (component == component2)
				continue;
1128

1129 1130 1131 1132 1133
			if (component2->dev == component->dev &&
			    !list_empty(&component2->dai_list)) {
				dai_component = component2;
				break;
			}
1134
		}
1135 1136 1137 1138 1139 1140 1141 1142
	} else {
		dai_component = component;
		list_for_each_entry(component2, &component_list, list) {
			if (component2->dev == component->dev &&
			    component2->steal_sibling_dai_widgets) {
				dai_component = NULL;
				break;
			}
1143 1144 1145
		}
	}

1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
	if (dai_component) {
		list_for_each_entry(dai, &dai_component->dai_list, list) {
			snd_soc_dapm_new_dai_widgets(dapm, dai);
			if (ret != 0) {
				dev_err(component->dev,
					"Failed to create DAI widgets %d\n",
					ret);
				goto err_probe;
			}
		}
1156 1157
	}

1158 1159
	if (component->probe) {
		ret = component->probe(component);
1160
		if (ret < 0) {
1161 1162
			dev_err(component->dev,
				"ASoC: failed to probe component %d\n", ret);
1163 1164
			goto err_probe;
		}
1165 1166 1167 1168 1169

		WARN(dapm->idle_bias_off &&
			dapm->bias_level != SND_SOC_BIAS_OFF,
			"codec %s can not start from non-off bias with idle_bias_off==1\n",
			component->name);
1170 1171
	}

1172 1173 1174 1175 1176 1177 1178 1179 1180
	if (component->controls)
		snd_soc_add_component_controls(component, component->controls,
				     component->num_controls);
	if (component->dapm_routes)
		snd_soc_dapm_add_routes(dapm, component->dapm_routes,
					component->num_dapm_routes);

	component->probed = 1;
	list_add(&dapm->list, &card->dapm_list);
1181

1182 1183 1184
	/* This is a HACK and will be removed soon */
	if (component->codec)
		list_add(&component->codec->card_list, &card->codec_dev_list);
1185 1186 1187 1188

	return 0;

err_probe:
1189 1190
	soc_cleanup_component_debugfs(component);
	module_put(component->dev->driver->owner);
1191 1192 1193 1194

	return ret;
}

1195 1196 1197 1198
static void rtd_release(struct device *dev)
{
	kfree(dev);
}
1199

1200 1201
static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
	const char *name)
1202
{
1203 1204 1205
	int ret = 0;

	/* register the rtd device */
1206 1207 1208 1209
	rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
	if (!rtd->dev)
		return -ENOMEM;
	device_initialize(rtd->dev);
1210
	rtd->dev->parent = rtd->card->dev;
1211 1212 1213
	rtd->dev->release = rtd_release;
	rtd->dev->init_name = name;
	dev_set_drvdata(rtd->dev, rtd);
L
Liam Girdwood 已提交
1214
	mutex_init(&rtd->pcm_mutex);
1215 1216 1217 1218
	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);
1219
	ret = device_add(rtd->dev);
1220
	if (ret < 0) {
1221 1222
		/* calling put_device() here to free the rtd->dev */
		put_device(rtd->dev);
1223
		dev_err(rtd->card->dev,
1224
			"ASoC: failed to register runtime device: %d\n", ret);
1225 1226 1227 1228
		return ret;
	}
	rtd->dev_registered = 1;

1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
	if (rtd->codec) {
		/* add DAPM sysfs entries for this codec */
		ret = snd_soc_dapm_sys_add(rtd->dev);
		if (ret < 0)
			dev_err(rtd->dev,
				"ASoC: failed to add codec dapm sysfs entries: %d\n",
				ret);

		/* add codec sysfs entries */
		ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
		if (ret < 0)
			dev_err(rtd->dev,
				"ASoC: failed to add codec sysfs files: %d\n",
				ret);
	}
1244 1245 1246 1247

	return 0;
}

1248 1249 1250 1251 1252
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_platform *platform = rtd->platform;
1253
	struct snd_soc_component *component;
1254
	int i, ret;
1255 1256

	/* probe the CPU-side component, if it is a CODEC */
1257
	component = rtd->cpu_dai->component;
1258
	if (component->driver->probe_order == order) {
1259 1260 1261
		ret = soc_probe_component(card, component);
		if (ret < 0)
			return ret;
1262 1263
	}

1264 1265
	/* probe the CODEC-side components */
	for (i = 0; i < rtd->num_codecs; i++) {
1266
		component = rtd->codec_dais[i]->component;
1267
		if (component->driver->probe_order == order) {
1268
			ret = soc_probe_component(card, component);
1269 1270 1271
			if (ret < 0)
				return ret;
		}
1272 1273 1274
	}

	/* probe the platform */
1275
	if (platform->component.driver->probe_order == order) {
1276
		ret = soc_probe_component(card, &platform->component);
1277 1278 1279 1280 1281 1282 1283
		if (ret < 0)
			return ret;
	}

	return 0;
}

1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
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;
}

1308 1309
static int soc_link_dai_widgets(struct snd_soc_card *card,
				struct snd_soc_dai_link *dai_link,
1310
				struct snd_soc_pcm_runtime *rtd)
1311
{
1312 1313
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
1314 1315 1316
	struct snd_soc_dapm_widget *play_w, *capture_w;
	int ret;

1317 1318 1319
	if (rtd->num_codecs > 1)
		dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");

1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
	/* 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;
}

1348
static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1349 1350 1351 1352
{
	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;
1353
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1354
	int i, ret;
1355

1356
	dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1357
			card->name, num, order);
1358 1359 1360 1361

	/* config components */
	cpu_dai->platform = platform;
	cpu_dai->card = card;
1362 1363
	for (i = 0; i < rtd->num_codecs; i++)
		rtd->codec_dais[i]->card = card;
1364 1365 1366 1367 1368

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

	/* probe the cpu_dai */
1369 1370
	if (!cpu_dai->probed &&
			cpu_dai->driver->probe_order == order) {
1371 1372 1373
		if (cpu_dai->driver->probe) {
			ret = cpu_dai->driver->probe(cpu_dai);
			if (ret < 0) {
1374 1375 1376
				dev_err(cpu_dai->dev,
					"ASoC: failed to probe CPU DAI %s: %d\n",
					cpu_dai->name, ret);
1377 1378 1379 1380
				return ret;
			}
		}
		cpu_dai->probed = 1;
F
Frank Mandarino 已提交
1381 1382
	}

1383
	/* probe the CODEC DAI */
1384 1385 1386 1387 1388
	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
1389

1390 1391 1392 1393
	/* complete DAI probe during last probe */
	if (order != SND_SOC_COMP_ORDER_LAST)
		return 0;

1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
	/* 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);
1405
	if (ret)
1406
		return ret;
M
Mark Brown 已提交
1407

1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420
#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

1421
	ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1422
	if (ret < 0)
1423 1424
		dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
			ret);
1425

1426 1427 1428
	if (cpu_dai->driver->compress_dai) {
		/*create compress_device"*/
		ret = soc_new_compress(rtd, num);
1429
		if (ret < 0) {
1430
			dev_err(card->dev, "ASoC: can't create compress %s\n",
1431
					 dai_link->stream_name);
1432 1433 1434
			return ret;
		}
	} else {
1435 1436 1437 1438 1439

		if (!dai_link->params) {
			/* create the pcm */
			ret = soc_new_pcm(rtd, num);
			if (ret < 0) {
1440
				dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1441
				       dai_link->stream_name, ret);
1442 1443
				return ret;
			}
1444
		} else {
1445 1446 1447
			INIT_DELAYED_WORK(&rtd->delayed_work,
						codec2codec_close_delayed_work);

1448
			/* link the DAI widgets */
1449
			ret = soc_link_dai_widgets(card, dai_link, rtd);
1450 1451
			if (ret)
				return ret;
1452
		}
1453 1454 1455
	}

	/* add platform data for AC97 devices */
1456 1457 1458 1459 1460
	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);
	}
1461 1462 1463 1464

	return 0;
}

M
Mark Brown 已提交
1465
#ifdef CONFIG_SND_SOC_AC97_BUS
1466 1467
static int soc_register_ac97_codec(struct snd_soc_codec *codec,
				   struct snd_soc_dai *codec_dai)
1468 1469 1470
{
	int ret;

M
Mark Brown 已提交
1471 1472 1473
	/* Only instantiate AC97 if not already done by the adaptor
	 * for the generic AC97 subsystem.
	 */
1474
	if (codec_dai->driver->ac97_control && !codec->ac97_registered) {
1475 1476 1477 1478 1479 1480 1481 1482
		/*
		 * 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.
		 */
1483
		if (!codec->ac97_created)
1484
			return 0;
1485

1486
		ret = soc_ac97_dev_register(codec);
M
Mark Brown 已提交
1487
		if (ret < 0) {
1488
			dev_err(codec->dev,
1489
				"ASoC: AC97 device register failed: %d\n", ret);
1490
			return ret;
M
Mark Brown 已提交
1491
		}
1492

1493
		codec->ac97_registered = 1;
M
Mark Brown 已提交
1494
	}
1495 1496 1497
	return 0;
}

1498
static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
1499 1500 1501 1502 1503 1504
{
	if (codec->ac97_registered) {
		soc_ac97_dev_unregister(codec);
		codec->ac97_registered = 0;
	}
}
1505

1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523
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;
}

1524 1525
static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
{
1526 1527 1528 1529
	int i;

	for (i = 0; i < rtd->num_codecs; i++)
		soc_unregister_ac97_codec(rtd->codec_dais[i]->codec);
1530
}
M
Mark Brown 已提交
1531 1532
#endif

1533
static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1534
{
1535
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1536
	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1537
	const char *name = aux_dev->codec_name;
1538

1539 1540
	rtd->component = soc_find_component(aux_dev->codec_of_node, name);
	if (!rtd->component) {
1541
		if (aux_dev->codec_of_node)
1542
			name = of_node_full_name(aux_dev->codec_of_node);
1543

1544
		dev_err(card->dev, "ASoC: %s not registered\n", name);
1545 1546
		return -EPROBE_DEFER;
	}
1547

1548 1549 1550 1551 1552 1553 1554
	/*
	 * Some places still reference rtd->codec, so we have to keep that
	 * initialized if the component is a CODEC. Once all those references
	 * have been removed, this code can be removed as well.
	 */
	 rtd->codec = rtd->component->codec;

1555
	return 0;
1556 1557
}

1558 1559
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
{
1560
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1561
	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1562
	int ret;
1563

1564
	ret = soc_probe_component(card, rtd->component);
1565
	if (ret < 0)
1566
		return ret;
1567

1568 1569
	/* do machine specific initialization */
	if (aux_dev->init) {
1570
		ret = aux_dev->init(rtd->component);
1571 1572 1573 1574 1575 1576
		if (ret < 0) {
			dev_err(card->dev, "ASoC: failed to init %s: %d\n",
				aux_dev->name, ret);
			return ret;
		}
	}
1577

1578
	return soc_post_component_init(rtd, aux_dev->name);
1579 1580 1581 1582 1583
}

static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
{
	struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1584
	struct snd_soc_component *component = rtd->component;
1585 1586 1587

	/* unregister the rtd device */
	if (rtd->dev_registered) {
1588
		device_remove_file(rtd->dev, &dev_attr_codec_reg);
1589
		device_unregister(rtd->dev);
1590 1591 1592
		rtd->dev_registered = 0;
	}

1593 1594
	if (component && component->probed)
		soc_remove_component(component);
1595 1596
}

1597
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1598 1599 1600 1601 1602 1603 1604 1605
{
	int ret;

	if (codec->cache_init)
		return 0;

	ret = snd_soc_cache_init(codec);
	if (ret < 0) {
1606 1607 1608
		dev_err(codec->dev,
			"ASoC: Failed to set cache compression type: %d\n",
			ret);
1609 1610 1611 1612 1613 1614
		return ret;
	}
	codec->cache_init = 1;
	return 0;
}

1615
static int snd_soc_instantiate_card(struct snd_soc_card *card)
1616
{
1617
	struct snd_soc_codec *codec;
1618
	struct snd_soc_dai_link *dai_link;
1619
	int ret, i, order, dai_fmt;
M
Mark Brown 已提交
1620

1621
	mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1622

1623
	/* bind DAIs */
1624 1625 1626 1627 1628
	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
1629

1630
	/* bind aux_devs too */
1631
	for (i = 0; i < card->num_aux_devs; i++) {
1632
		ret = soc_bind_aux_dev(card, i);
1633 1634
		if (ret != 0)
			goto base_error;
1635
	}
1636

1637 1638 1639 1640
	/* initialize the register cache for each available codec */
	list_for_each_entry(codec, &codec_list, list) {
		if (codec->cache_init)
			continue;
1641
		ret = snd_soc_init_codec_cache(codec);
1642 1643
		if (ret < 0)
			goto base_error;
1644 1645
	}

1646
	/* card bind complete so register a sound card */
1647
	ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1648 1649
			card->owner, 0, &card->snd_card);
	if (ret < 0) {
1650 1651 1652
		dev_err(card->dev,
			"ASoC: can't create sound card for card %s: %d\n",
			card->name, ret);
1653
		goto base_error;
1654 1655
	}

M
Mark Brown 已提交
1656 1657 1658 1659 1660
	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);

1661 1662 1663 1664
#ifdef CONFIG_DEBUG_FS
	snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
#endif

1665
#ifdef CONFIG_PM_SLEEP
1666 1667 1668
	/* deferred resume work */
	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
F
Frank Mandarino 已提交
1669

1670 1671 1672 1673
	if (card->dapm_widgets)
		snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
					  card->num_dapm_widgets);

1674 1675
	/* initialise the sound card only once */
	if (card->probe) {
1676
		ret = card->probe(card);
1677 1678 1679
		if (ret < 0)
			goto card_probe_error;
	}
M
Mark Brown 已提交
1680

1681
	/* probe all components used by DAI links on this card */
1682 1683 1684
	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
			order++) {
		for (i = 0; i < card->num_links; i++) {
1685
			ret = soc_probe_link_components(card, i, order);
1686
			if (ret < 0) {
1687 1688 1689
				dev_err(card->dev,
					"ASoC: failed to instantiate card %d\n",
					ret);
1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
				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) {
1701 1702 1703
				dev_err(card->dev,
					"ASoC: failed to instantiate card %d\n",
					ret);
1704 1705
				goto probe_dai_err;
			}
1706 1707
		}
	}
F
Frank Mandarino 已提交
1708

1709 1710 1711
	for (i = 0; i < card->num_aux_devs; i++) {
		ret = soc_probe_aux_dev(card, i);
		if (ret < 0) {
1712 1713 1714
			dev_err(card->dev,
				"ASoC: failed to add auxiliary devices %d\n",
				ret);
1715 1716 1717 1718
			goto probe_aux_dev_err;
		}
	}

1719
	snd_soc_dapm_link_dai_widgets(card);
1720
	snd_soc_dapm_connect_dai_link_widgets(card);
1721

1722
	if (card->controls)
1723
		snd_soc_add_card_controls(card, card->controls, card->num_controls);
1724

1725 1726 1727 1728
	if (card->dapm_routes)
		snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
					card->num_dapm_routes);

1729
	for (i = 0; i < card->num_links; i++) {
1730
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1731
		dai_link = &card->dai_link[i];
1732
		dai_fmt = dai_link->dai_fmt;
1733

1734
		if (dai_fmt) {
1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746
			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);
			}
1747 1748 1749
		}

		/* If this is a regular CPU link there will be a platform */
1750 1751
		if (dai_fmt &&
		    (dai_link->platform_name || dai_link->platform_of_node)) {
1752 1753 1754 1755
			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,
1756
					 "ASoC: Failed to set DAI format: %d\n",
1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775
					 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;
			}
1776 1777

			ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1778
						  dai_fmt);
1779
			if (ret != 0 && ret != -ENOTSUPP)
1780
				dev_warn(card->rtd[i].cpu_dai->dev,
1781
					 "ASoC: Failed to set DAI format: %d\n",
1782 1783 1784 1785
					 ret);
		}
	}

1786 1787
	snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
		 "%s", card->name);
1788 1789
	snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
		 "%s", card->long_name ? card->long_name : card->name);
1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
	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;
		}
	}
1804

1805 1806 1807
	if (card->late_probe) {
		ret = card->late_probe(card);
		if (ret < 0) {
1808
			dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
1809 1810 1811 1812 1813
				card->name, ret);
			goto probe_aux_dev_err;
		}
	}

1814
	if (card->fully_routed)
1815
		snd_soc_dapm_auto_nc_pins(card);
1816

1817
	snd_soc_dapm_new_widgets(card);
1818

1819 1820
	ret = snd_card_register(card->snd_card);
	if (ret < 0) {
1821 1822
		dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
				ret);
1823
		goto probe_aux_dev_err;
F
Frank Mandarino 已提交
1824 1825
	}

1826 1827 1828
#ifdef CONFIG_SND_SOC_AC97_BUS
	/* register any AC97 codecs */
	for (i = 0; i < card->num_rtd; i++) {
1829 1830
		ret = soc_register_ac97_dai_link(&card->rtd[i]);
		if (ret < 0) {
1831 1832
			dev_err(card->dev,
				"ASoC: failed to register AC97: %d\n", ret);
1833
			while (--i >= 0)
1834
				soc_unregister_ac97_dai_link(&card->rtd[i]);
1835
			goto probe_aux_dev_err;
1836
		}
1837
	}
1838 1839 1840
#endif

	card->instantiated = 1;
1841
	snd_soc_dapm_sync(&card->dapm);
1842
	mutex_unlock(&card->mutex);
1843 1844

	return 0;
1845

1846 1847 1848 1849
probe_aux_dev_err:
	for (i = 0; i < card->num_aux_devs; i++)
		soc_remove_aux_dev(card, i);

1850
probe_dai_err:
1851
	soc_remove_dai_links(card);
1852 1853

card_probe_error:
1854
	if (card->remove)
1855
		card->remove(card);
1856 1857 1858

	snd_card_free(card->snd_card);

1859
base_error:
1860
	mutex_unlock(&card->mutex);
F
Frank Mandarino 已提交
1861

1862
	return ret;
1863 1864 1865 1866 1867
}

/* probes a new socdev */
static int soc_probe(struct platform_device *pdev)
{
1868
	struct snd_soc_card *card = platform_get_drvdata(pdev);
1869

1870 1871 1872 1873 1874 1875 1876
	/*
	 * no card, so machine driver should be registering card
	 * we should not be here in that case so ret error
	 */
	if (!card)
		return -EINVAL;

1877
	dev_warn(&pdev->dev,
1878
		 "ASoC: machine %s should use snd_soc_register_card()\n",
1879 1880
		 card->name);

1881 1882
	/* Bodge while we unpick instantiation */
	card->dev = &pdev->dev;
1883

1884
	return snd_soc_register_card(card);
F
Frank Mandarino 已提交
1885 1886
}

1887
static int soc_cleanup_card_resources(struct snd_soc_card *card)
F
Frank Mandarino 已提交
1888 1889 1890
{
	int i;

1891 1892 1893
	/* make sure any delayed work runs */
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1894
		flush_delayed_work(&rtd->delayed_work);
1895
	}
1896

1897 1898 1899
	/* remove auxiliary devices */
	for (i = 0; i < card->num_aux_devs; i++)
		soc_remove_aux_dev(card, i);
F
Frank Mandarino 已提交
1900

1901
	/* remove and free each DAI */
1902
	soc_remove_dai_links(card);
1903

1904
	soc_cleanup_card_debugfs(card);
1905

1906 1907
	/* remove the card */
	if (card->remove)
1908
		card->remove(card);
1909

1910 1911
	snd_soc_dapm_free(&card->dapm);

1912 1913 1914 1915 1916 1917 1918 1919 1920
	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
1921

M
Mark Brown 已提交
1922
	snd_soc_unregister_card(card);
F
Frank Mandarino 已提交
1923 1924 1925
	return 0;
}

1926
int snd_soc_poweroff(struct device *dev)
M
Mark Brown 已提交
1927
{
1928
	struct snd_soc_card *card = dev_get_drvdata(dev);
1929
	int i;
M
Mark Brown 已提交
1930 1931

	if (!card->instantiated)
M
Mark Brown 已提交
1932
		return 0;
M
Mark Brown 已提交
1933 1934 1935

	/* Flush out pmdown_time work - we actually do want to run it
	 * now, we're shutting down so no imminent restart. */
1936 1937
	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1938
		flush_delayed_work(&rtd->delayed_work);
1939
	}
M
Mark Brown 已提交
1940

1941
	snd_soc_dapm_shutdown(card);
M
Mark Brown 已提交
1942

1943 1944
	/* deactivate pins to sleep state */
	for (i = 0; i < card->num_rtd; i++) {
1945 1946 1947 1948
		struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
		struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
		int j;

1949
		pinctrl_pm_select_sleep_state(cpu_dai->dev);
1950 1951 1952 1953
		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);
		}
1954 1955
	}

M
Mark Brown 已提交
1956
	return 0;
M
Mark Brown 已提交
1957
}
1958
EXPORT_SYMBOL_GPL(snd_soc_poweroff);
M
Mark Brown 已提交
1959

1960
const struct dev_pm_ops snd_soc_pm_ops = {
1961 1962 1963 1964
	.suspend = snd_soc_suspend,
	.resume = snd_soc_resume,
	.freeze = snd_soc_suspend,
	.thaw = snd_soc_resume,
1965
	.poweroff = snd_soc_poweroff,
1966
	.restore = snd_soc_resume,
M
Mark Brown 已提交
1967
};
1968
EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
M
Mark Brown 已提交
1969

F
Frank Mandarino 已提交
1970 1971 1972 1973
/* ASoC platform driver */
static struct platform_driver soc_driver = {
	.driver		= {
		.name		= "soc-audio",
1974
		.owner		= THIS_MODULE,
1975
		.pm		= &snd_soc_pm_ops,
F
Frank Mandarino 已提交
1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
	},
	.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)
{
	mutex_lock(&codec->mutex);

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

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

	codec->ac97->bus->ops = ops;
	codec->ac97->num = num;
2010 2011 2012 2013 2014 2015 2016

	/*
	 * 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
2017 2018 2019 2020 2021
	mutex_unlock(&codec->mutex);
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);

2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
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");
2069
		return PTR_ERR(p);
2070 2071 2072 2073 2074 2075
	}
	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");
2076
		return PTR_ERR(state);
2077 2078 2079 2080 2081 2082
	}
	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");
2083
		return PTR_ERR(state);
2084 2085 2086 2087 2088 2089
	}
	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");
2090
		return PTR_ERR(state);
2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132
	}
	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;
}

2133
struct snd_ac97_bus_ops *soc_ac97_ops;
2134
EXPORT_SYMBOL_GPL(soc_ac97_ops);
2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149

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);

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
/**
 * 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
2179 2180 2181 2182 2183 2184 2185 2186 2187
/**
 * snd_soc_free_ac97_codec - free AC97 codec device
 * @codec: audio codec
 *
 * Frees AC97 codec device resources.
 */
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
{
	mutex_lock(&codec->mutex);
2188
#ifdef CONFIG_SND_SOC_AC97_BUS
2189
	soc_unregister_ac97_codec(codec);
2190
#endif
F
Frank Mandarino 已提交
2191 2192 2193
	kfree(codec->ac97->bus);
	kfree(codec->ac97);
	codec->ac97 = NULL;
2194
	codec->ac97_created = 0;
F
Frank Mandarino 已提交
2195 2196 2197 2198 2199 2200 2201 2202
	mutex_unlock(&codec->mutex);
}
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
2203
 * @long_name: control long name
2204
 * @prefix: control name prefix
F
Frank Mandarino 已提交
2205 2206 2207 2208 2209 2210
 *
 * 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,
2211
				  void *data, const char *long_name,
2212
				  const char *prefix)
F
Frank Mandarino 已提交
2213 2214
{
	struct snd_kcontrol_new template;
2215 2216
	struct snd_kcontrol *kcontrol;
	char *name = NULL;
F
Frank Mandarino 已提交
2217 2218 2219 2220

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

2221 2222 2223 2224
	if (!long_name)
		long_name = template.name;

	if (prefix) {
2225
		name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238
		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
2239 2240 2241
}
EXPORT_SYMBOL_GPL(snd_soc_cnew);

2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252
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) {
2253 2254
			dev_err(dev, "ASoC: Failed to add %s: %d\n",
				control->name, err);
2255 2256 2257 2258 2259 2260 2261
			return err;
		}
	}

	return 0;
}

2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
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);

2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296
/**
 * 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
2297
/**
2298 2299
 * 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
2300 2301 2302 2303 2304 2305 2306 2307
 * 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.
 */
2308
int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2309
	const struct snd_kcontrol_new *controls, unsigned int num_controls)
I
Ian Molton 已提交
2310
{
2311 2312
	return snd_soc_add_component_controls(&codec->component, controls,
		num_controls);
I
Ian Molton 已提交
2313
}
2314
EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
I
Ian Molton 已提交
2315

2316 2317
/**
 * snd_soc_add_platform_controls - add an array of controls to a platform.
2318
 * Convenience function to add a list of controls.
2319 2320 2321 2322 2323 2324 2325 2326
 *
 * @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,
2327
	const struct snd_kcontrol_new *controls, unsigned int num_controls)
2328
{
2329 2330
	return snd_soc_add_component_controls(&platform->component, controls,
		num_controls);
2331 2332 2333
}
EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);

2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373
/**
 * 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
2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390
/**
 * 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;
2391
	uinfo->value.enumerated.items = e->items;
F
Frank Mandarino 已提交
2392

2393 2394
	if (uinfo->value.enumerated.item >= e->items)
		uinfo->value.enumerated.item = e->items - 1;
2395 2396 2397
	strlcpy(uinfo->value.enumerated.name,
		e->texts[uinfo->value.enumerated.item],
		sizeof(uinfo->value.enumerated.name));
F
Frank Mandarino 已提交
2398 2399 2400 2401 2402 2403 2404
	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
2405
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2406 2407 2408 2409 2410 2411 2412 2413
 *
 * 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)
{
2414
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
F
Frank Mandarino 已提交
2415
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2416 2417
	unsigned int val, item;
	unsigned int reg_val;
2418
	int ret;
F
Frank Mandarino 已提交
2419

2420 2421 2422
	ret = snd_soc_component_read(component, e->reg, &reg_val);
	if (ret)
		return ret;
2423 2424 2425 2426 2427 2428 2429 2430
	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
2431 2432 2433 2434 2435 2436 2437 2438

	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
2439
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2440 2441 2442 2443 2444 2445 2446 2447
 *
 * 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)
{
2448
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
F
Frank Mandarino 已提交
2449
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2450
	unsigned int *item = ucontrol->value.enumerated.item;
2451
	unsigned int val;
2452
	unsigned int mask;
F
Frank Mandarino 已提交
2453

2454
	if (item[0] >= e->items)
F
Frank Mandarino 已提交
2455
		return -EINVAL;
2456
	val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2457
	mask = e->mask << e->shift_l;
F
Frank Mandarino 已提交
2458
	if (e->shift_l != e->shift_r) {
2459
		if (item[1] >= e->items)
F
Frank Mandarino 已提交
2460
			return -EINVAL;
2461
		val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
2462
		mask |= e->mask << e->shift_r;
F
Frank Mandarino 已提交
2463 2464
	}

2465
	return snd_soc_component_update_bits(component, e->reg, mask, val);
F
Frank Mandarino 已提交
2466 2467 2468
}
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);

P
Peter Ujfalusi 已提交
2469
/**
2470
 * snd_soc_read_signed - Read a codec register and interprete as signed value
2471
 * @component: component
2472 2473 2474 2475
 * @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.
2476
 * @signed_val: Pointer to where the read value should be stored
P
Peter Ujfalusi 已提交
2477
 *
2478 2479 2480
 * 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
2481
 *
2482
 * Returns 0 on sucess, otherwise an error value
P
Peter Ujfalusi 已提交
2483
 */
2484 2485 2486
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
2487
{
2488 2489
	int ret;
	unsigned int val;
P
Peter Ujfalusi 已提交
2490

2491 2492 2493 2494 2495
	ret = snd_soc_component_read(component, reg, &val);
	if (ret < 0)
		return ret;

	val = (val >> shift) & mask;
P
Peter Ujfalusi 已提交
2496

2497 2498 2499 2500
	if (!sign_bit) {
		*signed_val = val;
		return 0;
	}
P
Peter Ujfalusi 已提交
2501

2502
	/* non-negative number */
2503 2504 2505 2506
	if (!(val & BIT(sign_bit))) {
		*signed_val = val;
		return 0;
	}
P
Peter Ujfalusi 已提交
2507

2508
	ret = val;
P
Peter Ujfalusi 已提交
2509

2510 2511 2512 2513 2514 2515 2516 2517
	/*
	 * 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));

2518 2519 2520
	*signed_val = ret;

	return 0;
P
Peter Ujfalusi 已提交
2521 2522
}

F
Frank Mandarino 已提交
2523 2524 2525 2526 2527
/**
 * snd_soc_info_volsw - single mixer info callback
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
2528 2529
 * Callback to provide information about a single mixer control, or a double
 * mixer control that spans 2 registers.
F
Frank Mandarino 已提交
2530 2531 2532 2533 2534 2535
 *
 * Returns 0 for success.
 */
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
2536 2537
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2538
	int platform_max;
F
Frank Mandarino 已提交
2539

2540 2541 2542 2543 2544
	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
2545 2546 2547 2548
		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	else
		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

2549
	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
F
Frank Mandarino 已提交
2550
	uinfo->value.integer.min = 0;
2551
	uinfo->value.integer.max = platform_max - mc->min;
F
Frank Mandarino 已提交
2552 2553 2554 2555 2556 2557 2558
	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
2559
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2560
 *
2561 2562
 * 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
2563 2564 2565 2566 2567 2568
 *
 * Returns 0 for success.
 */
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2569
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2570 2571
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2572
	unsigned int reg = mc->reg;
2573
	unsigned int reg2 = mc->rreg;
2574 2575
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2576
	int max = mc->max;
2577 2578
	int min = mc->min;
	int sign_bit = mc->sign_bit;
2579 2580
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
2581 2582
	int val;
	int ret;
F
Frank Mandarino 已提交
2583

2584 2585 2586
	if (sign_bit)
		mask = BIT(sign_bit + 1) - 1;

2587 2588 2589 2590 2591
	ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
	if (ret)
		return ret;

	ucontrol->value.integer.value[0] = val - min;
2592
	if (invert)
F
Frank Mandarino 已提交
2593
		ucontrol->value.integer.value[0] =
P
Philipp Zabel 已提交
2594
			max - ucontrol->value.integer.value[0];
2595 2596 2597

	if (snd_soc_volsw_is_stereo(mc)) {
		if (reg == reg2)
2598 2599
			ret = snd_soc_read_signed(component, reg, mask, rshift,
				sign_bit, &val);
2600
		else
2601 2602 2603 2604 2605 2606
			ret = snd_soc_read_signed(component, reg2, mask, shift,
				sign_bit, &val);
		if (ret)
			return ret;

		ucontrol->value.integer.value[1] = val - min;
2607
		if (invert)
F
Frank Mandarino 已提交
2608
			ucontrol->value.integer.value[1] =
P
Philipp Zabel 已提交
2609
				max - ucontrol->value.integer.value[1];
F
Frank Mandarino 已提交
2610 2611 2612 2613 2614 2615 2616 2617 2618
	}

	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
2619
 * @ucontrol: control element information
F
Frank Mandarino 已提交
2620
 *
2621 2622
 * 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
2623 2624 2625 2626 2627 2628
 *
 * Returns 0 for success.
 */
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
2629
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2630 2631
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2632
	unsigned int reg = mc->reg;
2633
	unsigned int reg2 = mc->rreg;
2634 2635
	unsigned int shift = mc->shift;
	unsigned int rshift = mc->rshift;
2636
	int max = mc->max;
2637 2638
	int min = mc->min;
	unsigned int sign_bit = mc->sign_bit;
2639 2640
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
2641
	int err;
2642
	bool type_2r = false;
2643 2644
	unsigned int val2 = 0;
	unsigned int val, val_mask;
F
Frank Mandarino 已提交
2645

2646 2647 2648 2649
	if (sign_bit)
		mask = BIT(sign_bit + 1) - 1;

	val = ((ucontrol->value.integer.value[0] + min) & mask);
F
Frank Mandarino 已提交
2650
	if (invert)
P
Philipp Zabel 已提交
2651
		val = max - val;
F
Frank Mandarino 已提交
2652 2653
	val_mask = mask << shift;
	val = val << shift;
2654
	if (snd_soc_volsw_is_stereo(mc)) {
2655
		val2 = ((ucontrol->value.integer.value[1] + min) & mask);
F
Frank Mandarino 已提交
2656
		if (invert)
P
Philipp Zabel 已提交
2657
			val2 = max - val2;
2658 2659 2660 2661 2662
		if (reg == reg2) {
			val_mask |= mask << rshift;
			val |= val2 << rshift;
		} else {
			val2 = val2 << shift;
2663
			type_2r = true;
2664
		}
F
Frank Mandarino 已提交
2665
	}
2666
	err = snd_soc_component_update_bits(component, reg, val_mask, val);
2667
	if (err < 0)
F
Frank Mandarino 已提交
2668 2669
		return err;

2670
	if (type_2r)
2671 2672
		err = snd_soc_component_update_bits(component, reg2, val_mask,
			val2);
2673

F
Frank Mandarino 已提交
2674 2675
	return err;
}
2676
EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
F
Frank Mandarino 已提交
2677

2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690
/**
 * 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)
{
2691
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2692 2693 2694 2695 2696 2697 2698 2699 2700
	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;
2701 2702
	unsigned int val;
	int ret;
2703

2704 2705 2706
	ret = snd_soc_component_read(component, reg, &val);
	if (ret < 0)
		return ret;
2707

2708 2709 2710 2711 2712 2713 2714 2715 2716 2717
	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;
	}
2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734

	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)
{
2735
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2736 2737 2738 2739 2740 2741 2742 2743 2744 2745
	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;
2746
	int err = 0;
2747
	unsigned int val, val_mask, val2 = 0;
2748 2749 2750 2751 2752

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

2753
	err = snd_soc_component_update_bits(component, reg, val_mask, val);
2754 2755
	if (err < 0)
		return err;
2756 2757 2758 2759 2760 2761

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

2762 2763
		err = snd_soc_component_update_bits(component, reg2, val_mask,
			val2);
2764
	}
2765
	return err;
2766 2767 2768
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);

2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780
/**
 * 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)
{
2781 2782
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2783
	int platform_max;
2784
	int min = mc->min;
2785

2786 2787 2788 2789
	if (!mc->platform_max)
		mc->platform_max = mc->max;
	platform_max = mc->platform_max;

2790 2791 2792
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
2793
	uinfo->value.integer.max = platform_max - min;
2794 2795 2796 2797 2798 2799 2800
	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
2801
 * @ucontrol: control element information
2802 2803 2804 2805 2806 2807 2808 2809
 *
 * 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)
{
2810 2811
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2812
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2813
	unsigned int reg = mc->reg;
2814
	unsigned int val;
2815
	int min = mc->min;
2816 2817 2818 2819 2820
	int ret;

	ret = snd_soc_component_read(component, reg, &val);
	if (ret)
		return ret;
2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832

	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
2833
 * @ucontrol: control element information
2834 2835 2836 2837 2838 2839 2840 2841
 *
 * 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)
{
2842 2843
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
2844
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2845
	unsigned int reg = mc->reg;
2846
	int min = mc->min;
2847
	unsigned int val;
2848 2849 2850 2851

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

2852
	return snd_soc_component_update_bits(component, reg, 0xffff, val);
2853 2854 2855
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);

2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878
/**
 * 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;
2879
	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900
	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;
2901
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2902
	unsigned int reg = mc->reg;
2903
	unsigned int rreg = mc->rreg;
2904 2905 2906 2907 2908 2909
	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;
2910
	int ret;
2911 2912 2913 2914 2915 2916 2917

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

2918
	ret = snd_soc_component_update_bits(component, reg, val_mask, val);
2919
	if (ret < 0)
2920 2921 2922 2923 2924 2925 2926 2927 2928
		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;

2929 2930
		ret = snd_soc_component_update_bits(component, rreg, val_mask,
			val);
2931 2932 2933
	}

	return ret;
2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
}
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)
{
2949
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
2950 2951 2952
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
2953
	unsigned int rreg = mc->rreg;
2954 2955 2956 2957 2958
	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;
2959 2960
	unsigned int val;
	int ret;
2961

2962 2963 2964 2965 2966
	ret = snd_soc_component_read(component, reg, &val);
	if (ret)
		return ret;

	ucontrol->value.integer.value[0] = (val >> shift) & mask;
2967 2968 2969 2970 2971 2972
	if (invert)
		ucontrol->value.integer.value[0] =
			max - ucontrol->value.integer.value[0];
	ucontrol->value.integer.value[0] =
		ucontrol->value.integer.value[0] - min;

2973
	if (snd_soc_volsw_is_stereo(mc)) {
2974 2975 2976 2977 2978
		ret = snd_soc_component_read(component, rreg, &val);
		if (ret)
			return ret;

		ucontrol->value.integer.value[1] = (val >> shift) & mask;
2979 2980 2981 2982 2983 2984 2985
		if (invert)
			ucontrol->value.integer.value[1] =
				max - ucontrol->value.integer.value[1];
		ucontrol->value.integer.value[1] =
			ucontrol->value.integer.value[1] - min;
	}

2986 2987 2988 2989
	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);

2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
/**
 * 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)
{
3002
	struct snd_card *card = codec->component.card->snd_card;
3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020
	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) {
3021
			mc->platform_max = max;
3022 3023 3024 3025 3026 3027 3028
			ret = 0;
		}
	}
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_limit_volume);

3029 3030 3031
int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
		       struct snd_ctl_elem_info *uinfo)
{
3032
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3033 3034 3035
	struct soc_bytes *params = (void *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3036
	uinfo->count = params->num_regs * component->val_bytes;
3037 3038 3039 3040 3041 3042 3043 3044

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_info);

int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
		      struct snd_ctl_elem_value *ucontrol)
{
3045
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3046 3047 3048
	struct soc_bytes *params = (void *)kcontrol->private_value;
	int ret;

3049 3050
	if (component->regmap)
		ret = regmap_raw_read(component->regmap, params->base,
3051
				      ucontrol->value.bytes.data,
3052
				      params->num_regs * component->val_bytes);
3053 3054 3055
	else
		ret = -EINVAL;

3056 3057
	/* Hide any masked bytes to ensure consistent data reporting */
	if (ret == 0 && params->mask) {
3058
		switch (component->val_bytes) {
3059 3060 3061 3062 3063
		case 1:
			ucontrol->value.bytes.data[0] &= ~params->mask;
			break;
		case 2:
			((u16 *)(&ucontrol->value.bytes.data))[0]
3064
				&= cpu_to_be16(~params->mask);
3065 3066 3067
			break;
		case 4:
			((u32 *)(&ucontrol->value.bytes.data))[0]
3068
				&= cpu_to_be32(~params->mask);
3069 3070 3071 3072 3073 3074
			break;
		default:
			return -EINVAL;
		}
	}

3075 3076 3077 3078 3079 3080 3081
	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_get);

int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
		      struct snd_ctl_elem_value *ucontrol)
{
3082
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3083
	struct soc_bytes *params = (void *)kcontrol->private_value;
3084
	int ret, len;
3085
	unsigned int val, mask;
3086
	void *data;
3087

3088
	if (!component->regmap)
3089 3090
		return -EINVAL;

3091
	len = params->num_regs * component->val_bytes;
3092

3093 3094 3095 3096
	data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
	if (!data)
		return -ENOMEM;

3097 3098 3099 3100 3101 3102
	/*
	 * 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) {
3103
		ret = regmap_read(component->regmap, params->base, &val);
3104
		if (ret != 0)
3105
			goto out;
3106 3107 3108

		val &= params->mask;

3109
		switch (component->val_bytes) {
3110 3111 3112 3113 3114
		case 1:
			((u8 *)data)[0] &= ~params->mask;
			((u8 *)data)[0] |= val;
			break;
		case 2:
3115
			mask = ~params->mask;
3116
			ret = regmap_parse_val(component->regmap,
3117 3118 3119 3120 3121 3122
							&mask, &mask);
			if (ret != 0)
				goto out;

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

3123
			ret = regmap_parse_val(component->regmap,
3124 3125 3126 3127 3128
							&val, &val);
			if (ret != 0)
				goto out;

			((u16 *)data)[0] |= val;
3129 3130
			break;
		case 4:
3131
			mask = ~params->mask;
3132
			ret = regmap_parse_val(component->regmap,
3133 3134 3135 3136 3137 3138
							&mask, &mask);
			if (ret != 0)
				goto out;

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

3139
			ret = regmap_parse_val(component->regmap,
3140 3141 3142 3143 3144
							&val, &val);
			if (ret != 0)
				goto out;

			((u32 *)data)[0] |= val;
3145 3146
			break;
		default:
3147 3148
			ret = -EINVAL;
			goto out;
3149 3150 3151
		}
	}

3152
	ret = regmap_raw_write(component->regmap, params->base,
3153 3154
			       data, len);

3155
out:
3156
	kfree(data);
3157 3158 3159 3160 3161

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_bytes_put);

V
Vinod Koul 已提交
3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
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);

3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194
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);

3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235
/**
 * 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)
{
3236
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3237 3238 3239 3240
	struct soc_mreg_control *mc =
		(struct soc_mreg_control *)kcontrol->private_value;
	unsigned int regbase = mc->regbase;
	unsigned int regcount = mc->regcount;
3241
	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3242 3243 3244 3245 3246 3247
	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;
3248
	unsigned int regval;
3249
	unsigned int i;
3250
	int ret;
3251 3252

	for (i = 0; i < regcount; i++) {
3253 3254 3255 3256
		ret = snd_soc_component_read(component, regbase+i, &regval);
		if (ret)
			return ret;
		val |= (regval & regwmask) << (regwshift*(regcount-i-1));
3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284
	}
	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)
{
3285
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3286 3287 3288 3289
	struct soc_mreg_control *mc =
		(struct soc_mreg_control *)kcontrol->private_value;
	unsigned int regbase = mc->regbase;
	unsigned int regcount = mc->regcount;
3290
	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304
	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;
3305
		err = snd_soc_component_update_bits(component, regbase+i,
3306 3307 3308 3309 3310 3311 3312 3313 3314
				regmask, regval);
		if (err < 0)
			return err;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);

3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326
/**
 * 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)
{
3327
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3328 3329 3330 3331 3332 3333
	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;
3334 3335 3336 3337 3338 3339 3340 3341
	unsigned int val;
	int ret;

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

	val &= mask;
3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363

	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)
{
3364
	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375
	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;

3376
	err = snd_soc_component_update_bits(component, reg, mask, val1);
3377 3378 3379
	if (err < 0)
		return err;

3380
	return snd_soc_component_update_bits(component, reg, mask, val2);
3381 3382 3383
}
EXPORT_SYMBOL_GPL(snd_soc_put_strobe);

3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395
/**
 * 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)
{
3396 3397
	if (dai->driver && dai->driver->ops->set_sysclk)
		return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3398
	else if (dai->codec && dai->codec->driver->set_sysclk)
3399
		return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3400
						      freq, dir);
3401
	else
3402
		return -ENOTSUPP;
3403 3404 3405
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);

3406 3407 3408 3409
/**
 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
 * @codec: CODEC
 * @clk_id: DAI specific clock ID
3410
 * @source: Source for the clock
3411 3412 3413 3414 3415 3416
 * @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,
3417
			     int source, unsigned int freq, int dir)
3418 3419
{
	if (codec->driver->set_sysclk)
3420 3421
		return codec->driver->set_sysclk(codec, clk_id, source,
						 freq, dir);
3422
	else
3423
		return -ENOTSUPP;
3424 3425 3426
}
EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);

3427 3428 3429
/**
 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
 * @dai: DAI
M
Mark Brown 已提交
3430
 * @div_id: DAI specific clock divider ID
3431 3432 3433 3434 3435 3436 3437 3438 3439
 * @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)
{
3440 3441
	if (dai->driver && dai->driver->ops->set_clkdiv)
		return dai->driver->ops->set_clkdiv(dai, div_id, div);
3442 3443 3444 3445 3446 3447 3448 3449 3450
	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
3451
 * @source: DAI specific source for the PLL
3452 3453 3454 3455 3456
 * @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.
 */
3457 3458
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
	unsigned int freq_in, unsigned int freq_out)
3459
{
3460 3461
	if (dai->driver && dai->driver->ops->set_pll)
		return dai->driver->ops->set_pll(dai, pll_id, source,
3462
					 freq_in, freq_out);
3463 3464 3465
	else if (dai->codec && dai->codec->driver->set_pll)
		return dai->codec->driver->set_pll(dai->codec, pll_id, source,
						   freq_in, freq_out);
3466 3467 3468 3469 3470
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);

3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491
/*
 * 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);

3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507
/**
 * 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);

3508 3509 3510 3511 3512 3513 3514 3515 3516
/**
 * 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)
{
3517
	if (dai->driver == NULL)
3518
		return -EINVAL;
3519 3520 3521
	if (dai->driver->ops->set_fmt == NULL)
		return -ENOTSUPP;
	return dai->driver->ops->set_fmt(dai, fmt);
3522 3523 3524
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);

3525
/**
3526
 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3527 3528 3529 3530 3531 3532
 * @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.
 */
3533
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548
					  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;
}

3549 3550 3551
/**
 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
 * @dai: DAI
3552 3553
 * @tx_mask: bitmask representing active TX slots.
 * @rx_mask: bitmask representing active RX slots.
3554
 * @slots: Number of slots in use.
3555
 * @slot_width: Width in bits for each slot.
3556 3557 3558 3559 3560
 *
 * 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,
3561
	unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3562
{
3563 3564
	if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
		dai->driver->ops->xlate_tdm_slot_mask(slots,
3565 3566
						&tx_mask, &rx_mask);
	else
3567
		snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
3568

3569 3570 3571
	dai->tx_mask = tx_mask;
	dai->rx_mask = rx_mask;

3572 3573
	if (dai->driver && dai->driver->ops->set_tdm_slot)
		return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3574
				slots, slot_width);
3575
	else
3576
		return -ENOTSUPP;
3577 3578 3579
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);

3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595
/**
 * 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)
{
3596 3597
	if (dai->driver && dai->driver->ops->set_channel_map)
		return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3598 3599 3600 3601 3602 3603
			rx_num, rx_slot);
	else
		return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);

3604 3605 3606 3607 3608 3609 3610 3611 3612
/**
 * 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)
{
3613 3614
	if (dai->driver && dai->driver->ops->set_tristate)
		return dai->driver->ops->set_tristate(dai, tristate);
3615 3616 3617 3618 3619 3620 3621 3622 3623
	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
3624
 * @direction: stream to mute
3625 3626 3627
 *
 * Mutes the DAI DAC.
 */
3628 3629
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
			     int direction)
3630
{
3631 3632 3633 3634 3635 3636 3637
	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)
3638
		return dai->driver->ops->digital_mute(dai, mute);
3639
	else
3640
		return -ENOTSUPP;
3641 3642 3643
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);

3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670
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
3671 3672 3673
/**
 * snd_soc_register_card - Register a card with the ASoC core
 *
M
Mark Brown 已提交
3674
 * @card: Card to register
M
Mark Brown 已提交
3675 3676
 *
 */
3677
int snd_soc_register_card(struct snd_soc_card *card)
M
Mark Brown 已提交
3678
{
3679
	int i, j, ret;
3680

M
Mark Brown 已提交
3681 3682 3683
	if (!card->name || !card->dev)
		return -EINVAL;

3684 3685 3686
	for (i = 0; i < card->num_links; i++) {
		struct snd_soc_dai_link *link = &card->dai_link[i];

3687 3688 3689 3690
		ret = snd_soc_init_multicodec(card, link);
		if (ret) {
			dev_err(card->dev, "ASoC: failed to init multicodec\n");
			return ret;
3691
		}
3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709

		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;
			}
3710
		}
3711 3712 3713 3714 3715 3716

		/*
		 * 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) {
3717 3718 3719
			dev_err(card->dev,
				"ASoC: Both platform name/of_node are set for %s\n",
				link->name);
3720 3721 3722 3723
			return -EINVAL;
		}

		/*
3724 3725 3726 3727 3728
		 * 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) {
3729 3730 3731
			dev_err(card->dev,
				"ASoC: Neither/both cpu name/of_node are set for %s\n",
				link->name);
3732 3733 3734 3735 3736
			return -EINVAL;
		}
		/*
		 * At least one of CPU DAI name or CPU device name/node must be
		 * specified
3737
		 */
3738 3739
		if (!link->cpu_dai_name &&
		    !(link->cpu_name || link->cpu_of_node)) {
3740 3741 3742
			dev_err(card->dev,
				"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
				link->name);
3743 3744 3745 3746
			return -EINVAL;
		}
	}

M
Mark Brown 已提交
3747 3748
	dev_set_drvdata(card->dev, card);

3749 3750
	snd_soc_initialize_card_lists(card);

3751 3752
	soc_init_card_debugfs(card);

3753 3754 3755 3756
	card->rtd = devm_kzalloc(card->dev,
				 sizeof(struct snd_soc_pcm_runtime) *
				 (card->num_links + card->num_aux_devs),
				 GFP_KERNEL);
3757 3758
	if (card->rtd == NULL)
		return -ENOMEM;
3759
	card->num_rtd = 0;
3760
	card->rtd_aux = &card->rtd[card->num_links];
3761

3762 3763
	for (i = 0; i < card->num_links; i++) {
		card->rtd[i].card = card;
3764
		card->rtd[i].dai_link = &card->dai_link[i];
3765 3766 3767 3768 3769 3770
		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;
3771 3772 3773 3774
	}

	for (i = 0; i < card->num_aux_devs; i++)
		card->rtd_aux[i].card = card;
3775

3776
	INIT_LIST_HEAD(&card->dapm_dirty);
M
Mark Brown 已提交
3777
	card->instantiated = 0;
3778
	mutex_init(&card->mutex);
3779
	mutex_init(&card->dapm_mutex);
M
Mark Brown 已提交
3780

3781 3782 3783
	ret = snd_soc_instantiate_card(card);
	if (ret != 0)
		soc_cleanup_card_debugfs(card);
M
Mark Brown 已提交
3784

3785 3786
	/* deactivate pins to sleep state */
	for (i = 0; i < card->num_rtd; i++) {
3787 3788 3789 3790 3791 3792 3793 3794 3795 3796
		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);
		}

3797 3798 3799 3800
		if (!cpu_dai->active)
			pinctrl_pm_select_sleep_state(cpu_dai->dev);
	}

3801
	return ret;
M
Mark Brown 已提交
3802
}
3803
EXPORT_SYMBOL_GPL(snd_soc_register_card);
M
Mark Brown 已提交
3804 3805 3806 3807

/**
 * snd_soc_unregister_card - Unregister a card with the ASoC core
 *
M
Mark Brown 已提交
3808
 * @card: Card to unregister
M
Mark Brown 已提交
3809 3810
 *
 */
3811
int snd_soc_unregister_card(struct snd_soc_card *card)
M
Mark Brown 已提交
3812
{
3813 3814
	if (card->instantiated) {
		card->instantiated = false;
3815
		snd_soc_dapm_shutdown(card);
3816
		soc_cleanup_card_resources(card);
3817
	}
3818
	dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
M
Mark Brown 已提交
3819 3820 3821

	return 0;
}
3822
EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
M
Mark Brown 已提交
3823

3824 3825 3826 3827
/*
 * Simplify DAI link configuration by removing ".-1" from device names
 * and sanitizing names.
 */
3828
static char *fmt_single_name(struct device *dev, int *id)
3829 3830 3831 3832 3833 3834 3835
{
	char *found, name[NAME_SIZE];
	int id1, id2;

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

3836
	strlcpy(name, dev_name(dev), NAME_SIZE);
3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854

	/* 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 */
3855
			*id = ((id1 & 0xffff) << 16) + id2;
3856 3857 3858

			/* sanitize component name for DAI link creation */
			snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3859
			strlcpy(name, tmp, NAME_SIZE);
3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874
		} 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) {
3875 3876 3877
		dev_err(dev,
			"ASoC: error - multiple DAI %s registered with no name\n",
			dev_name(dev));
3878 3879 3880 3881 3882 3883
		return NULL;
	}

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

M
Mark Brown 已提交
3884
/**
3885
 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
M
Mark Brown 已提交
3886
 *
3887
 * @component: The component for which the DAIs should be unregistered
M
Mark Brown 已提交
3888
 */
3889
static void snd_soc_unregister_dais(struct snd_soc_component *component)
M
Mark Brown 已提交
3890
{
L
Lars-Peter Clausen 已提交
3891
	struct snd_soc_dai *dai, *_dai;
M
Mark Brown 已提交
3892

L
Lars-Peter Clausen 已提交
3893
	list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3894 3895
		dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
			dai->name);
L
Lars-Peter Clausen 已提交
3896
		list_del(&dai->list);
3897
		kfree(dai->name);
3898 3899
		kfree(dai);
	}
M
Mark Brown 已提交
3900 3901 3902
}

/**
3903
 * snd_soc_register_dais - Register a DAI with the ASoC core
M
Mark Brown 已提交
3904
 *
3905 3906
 * @component: The component the DAIs are registered for
 * @dai_drv: DAI driver to use for the DAIs
M
Mark Brown 已提交
3907
 * @count: Number of DAIs
3908 3909
 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
 *                     parent's name.
M
Mark Brown 已提交
3910
 */
3911
static int snd_soc_register_dais(struct snd_soc_component *component,
3912 3913
	struct snd_soc_dai_driver *dai_drv, size_t count,
	bool legacy_dai_naming)
M
Mark Brown 已提交
3914
{
3915
	struct device *dev = component->dev;
3916
	struct snd_soc_dai *dai;
3917 3918
	unsigned int i;
	int ret;
3919

3920
	dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
M
Mark Brown 已提交
3921

3922 3923 3924
	component->dai_drv = dai_drv;
	component->num_dai = count;

M
Mark Brown 已提交
3925
	for (i = 0; i < count; i++) {
3926 3927

		dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3928 3929 3930 3931
		if (dai == NULL) {
			ret = -ENOMEM;
			goto err;
		}
3932

3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949
		/*
		 * 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;
		}
3950 3951
		if (dai->name == NULL) {
			kfree(dai);
3952
			ret = -ENOMEM;
M
Mark Brown 已提交
3953
			goto err;
3954 3955
		}

3956
		dai->component = component;
3957 3958 3959 3960 3961
		dai->dev = dev;
		dai->driver = &dai_drv[i];
		if (!dai->driver->ops)
			dai->driver->ops = &null_dai_ops;

3962
		list_add(&dai->list, &component->dai_list);
3963

3964
		dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
M
Mark Brown 已提交
3965 3966 3967 3968 3969
	}

	return 0;

err:
3970
	snd_soc_unregister_dais(component);
M
Mark Brown 已提交
3971 3972 3973 3974

	return ret;
}

3975 3976
static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
	enum snd_soc_dapm_type type, int subseq)
3977
{
3978
	struct snd_soc_component *component = dapm->component;
3979

3980 3981
	component->driver->seq_notifier(component, type, subseq);
}
3982

3983 3984 3985 3986
static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
	int event)
{
	struct snd_soc_component *component = dapm->component;
3987

3988 3989
	return component->driver->stream_event(component, event);
}
3990

3991 3992
static int snd_soc_component_initialize(struct snd_soc_component *component,
	const struct snd_soc_component_driver *driver, struct device *dev)
3993
{
3994 3995
	struct snd_soc_dapm_context *dapm;

3996 3997 3998
	component->name = fmt_single_name(dev, &component->id);
	if (!component->name) {
		dev_err(dev, "ASoC: Failed to allocate name\n");
3999 4000 4001
		return -ENOMEM;
	}

4002 4003
	component->dev = dev;
	component->driver = driver;
4004 4005
	component->probe = component->driver->probe;
	component->remove = component->driver->remove;
4006

4007 4008 4009 4010 4011 4012 4013
	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;
4014
	dapm->idle_bias_off = true;
4015 4016 4017 4018
	if (driver->seq_notifier)
		dapm->seq_notifier = snd_soc_component_seq_notifier;
	if (driver->stream_event)
		dapm->stream_event = snd_soc_component_stream_event;
4019

4020 4021 4022 4023 4024 4025 4026
	component->controls = driver->controls;
	component->num_controls = driver->num_controls;
	component->dapm_widgets = driver->dapm_widgets;
	component->num_dapm_widgets = driver->num_dapm_widgets;
	component->dapm_routes = driver->dapm_routes;
	component->num_dapm_routes = driver->num_dapm_routes;

4027 4028
	INIT_LIST_HEAD(&component->dai_list);
	mutex_init(&component->io_mutex);
4029

4030 4031
	return 0;
}
4032

4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044
static void snd_soc_component_init_regmap(struct snd_soc_component *component)
{
	if (!component->regmap)
		component->regmap = dev_get_regmap(component->dev, NULL);
	if (component->regmap) {
		int val_bytes = regmap_get_val_bytes(component->regmap);
		/* Errors are legitimate for non-integer byte multiples */
		if (val_bytes > 0)
			component->val_bytes = val_bytes;
	}
}

4045 4046
static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
{
4047 4048 4049
	if (!component->write && !component->read)
		snd_soc_component_init_regmap(component);

4050 4051
	list_add(&component->list, &component_list);
}
4052

4053 4054
static void snd_soc_component_add(struct snd_soc_component *component)
{
4055
	mutex_lock(&client_mutex);
4056
	snd_soc_component_add_unlocked(component);
4057
	mutex_unlock(&client_mutex);
4058
}
4059

4060 4061 4062 4063 4064
static void snd_soc_component_cleanup(struct snd_soc_component *component)
{
	snd_soc_unregister_dais(component);
	kfree(component->name);
}
4065

4066 4067 4068 4069
static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
{
	list_del(&component->list);
}
4070

4071 4072 4073 4074 4075
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);
4076 4077 4078 4079 4080 4081 4082 4083
}

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;
4084
	int ret;
4085

4086
	cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
4087 4088 4089 4090 4091
	if (!cmpnt) {
		dev_err(dev, "ASoC: Failed to allocate memory\n");
		return -ENOMEM;
	}

4092 4093 4094 4095
	ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
	if (ret)
		goto err_free;

4096
	cmpnt->ignore_pmdown_time = true;
4097
	cmpnt->registered_as_component = true;
4098

4099 4100 4101 4102 4103
	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;
	}
4104

4105
	snd_soc_component_add(cmpnt);
4106

4107
	return 0;
4108

4109 4110 4111 4112 4113
err_cleanup:
	snd_soc_component_cleanup(cmpnt);
err_free:
	kfree(cmpnt);
	return ret;
4114
}
4115
EXPORT_SYMBOL_GPL(snd_soc_register_component);
4116

4117 4118 4119 4120 4121 4122 4123 4124 4125
/**
 * 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) {
4126
		if (dev == cmpnt->dev && cmpnt->registered_as_component)
4127 4128 4129 4130 4131
			goto found;
	}
	return;

found:
4132 4133 4134
	snd_soc_component_del(cmpnt);
	snd_soc_component_cleanup(cmpnt);
	kfree(cmpnt);
4135 4136 4137
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_component);

4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151
static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
{
	struct snd_soc_platform *platform = snd_soc_component_to_platform(component);

	return platform->driver->probe(platform);
}

static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
{
	struct snd_soc_platform *platform = snd_soc_component_to_platform(component);

	platform->driver->remove(platform);
}

M
Mark Brown 已提交
4152
/**
4153 4154 4155 4156
 * 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
4157
 */
4158
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
4159
		const struct snd_soc_platform_driver *platform_drv)
M
Mark Brown 已提交
4160
{
4161 4162
	int ret;

4163 4164 4165 4166
	ret = snd_soc_component_initialize(&platform->component,
			&platform_drv->component_driver, dev);
	if (ret)
		return ret;
M
Mark Brown 已提交
4167

4168 4169
	platform->dev = dev;
	platform->driver = platform_drv;
4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187
	if (platform_drv->controls) {
		platform->component.controls = platform_drv->controls;
		platform->component.num_controls = platform_drv->num_controls;
	}
	if (platform_drv->dapm_widgets) {
		platform->component.dapm_widgets = platform_drv->dapm_widgets;
		platform->component.num_dapm_widgets = platform_drv->num_dapm_widgets;
		platform->component.steal_sibling_dai_widgets = true;
	}
	if (platform_drv->dapm_routes) {
		platform->component.dapm_routes = platform_drv->dapm_routes;
		platform->component.num_dapm_routes = platform_drv->num_dapm_routes;
	}

	if (platform_drv->probe)
		platform->component.probe = snd_soc_platform_drv_probe;
	if (platform_drv->remove)
		platform->component.remove = snd_soc_platform_drv_remove;
M
Mark Brown 已提交
4188

4189 4190 4191 4192
#ifdef CONFIG_DEBUG_FS
	platform->component.debugfs_prefix = "platform";
#endif

M
Mark Brown 已提交
4193
	mutex_lock(&client_mutex);
4194
	snd_soc_component_add_unlocked(&platform->component);
M
Mark Brown 已提交
4195 4196 4197
	list_add(&platform->list, &platform_list);
	mutex_unlock(&client_mutex);

4198 4199
	dev_dbg(dev, "ASoC: Registered platform '%s'\n",
		platform->component.name);
M
Mark Brown 已提交
4200 4201 4202

	return 0;
}
4203
EXPORT_SYMBOL_GPL(snd_soc_add_platform);
M
Mark Brown 已提交
4204 4205

/**
4206
 * snd_soc_register_platform - Register a platform with the ASoC core
M
Mark Brown 已提交
4207
 *
4208
 * @platform: platform to register
M
Mark Brown 已提交
4209
 */
4210 4211
int snd_soc_register_platform(struct device *dev,
		const struct snd_soc_platform_driver *platform_drv)
M
Mark Brown 已提交
4212
{
4213
	struct snd_soc_platform *platform;
4214
	int ret;
4215

4216
	dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
4217

4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235
	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)
{
4236

M
Mark Brown 已提交
4237 4238
	mutex_lock(&client_mutex);
	list_del(&platform->list);
4239
	snd_soc_component_del_unlocked(&platform->component);
M
Mark Brown 已提交
4240 4241
	mutex_unlock(&client_mutex);

4242 4243
	snd_soc_component_cleanup(&platform->component);

4244
	dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
4245
		platform->component.name);
4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275
}
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);
4276
	kfree(platform);
M
Mark Brown 已提交
4277 4278 4279
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);

4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312
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];
}

4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326
static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
{
	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);

	return codec->driver->probe(codec);
}

static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
{
	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);

	codec->driver->remove(codec);
}

4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344
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;
}

4345 4346 4347 4348 4349 4350 4351 4352
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
4353 4354 4355
/**
 * snd_soc_register_codec - Register a codec with the ASoC core
 *
M
Mark Brown 已提交
4356
 * @codec: codec to register
M
Mark Brown 已提交
4357
 */
4358
int snd_soc_register_codec(struct device *dev,
4359 4360 4361
			   const struct snd_soc_codec_driver *codec_drv,
			   struct snd_soc_dai_driver *dai_drv,
			   int num_dai)
M
Mark Brown 已提交
4362
{
4363
	struct snd_soc_codec *codec;
4364
	struct snd_soc_dai *dai;
4365
	int ret, i;
4366

4367 4368 4369 4370 4371
	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
4372

4373
	codec->component.dapm_ptr = &codec->dapm;
4374
	codec->component.codec = codec;
4375

4376 4377 4378 4379
	ret = snd_soc_component_initialize(&codec->component,
			&codec_drv->component_driver, dev);
	if (ret)
		goto err_free;
4380

4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397
	if (codec_drv->controls) {
		codec->component.controls = codec_drv->controls;
		codec->component.num_controls = codec_drv->num_controls;
	}
	if (codec_drv->dapm_widgets) {
		codec->component.dapm_widgets = codec_drv->dapm_widgets;
		codec->component.num_dapm_widgets = codec_drv->num_dapm_widgets;
	}
	if (codec_drv->dapm_routes) {
		codec->component.dapm_routes = codec_drv->dapm_routes;
		codec->component.num_dapm_routes = codec_drv->num_dapm_routes;
	}

	if (codec_drv->probe)
		codec->component.probe = snd_soc_codec_drv_probe;
	if (codec_drv->remove)
		codec->component.remove = snd_soc_codec_drv_remove;
4398 4399 4400 4401
	if (codec_drv->write)
		codec->component.write = snd_soc_codec_drv_write;
	if (codec_drv->read)
		codec->component.read = snd_soc_codec_drv_read;
4402
	codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
L
Liam Girdwood 已提交
4403
	codec->dapm.codec = codec;
4404
	codec->dapm.idle_bias_off = codec_drv->idle_bias_off;
4405
	codec->dapm.suspend_bias_off = codec_drv->suspend_bias_off;
4406 4407
	if (codec_drv->seq_notifier)
		codec->dapm.seq_notifier = codec_drv->seq_notifier;
4408 4409
	if (codec_drv->set_bias_level)
		codec->dapm.set_bias_level = snd_soc_codec_set_bias_level;
4410 4411
	codec->dev = dev;
	codec->driver = codec_drv;
4412
	codec->component.val_bytes = codec_drv->reg_word_size;
4413
	mutex_init(&codec->mutex);
L
Liam Girdwood 已提交
4414

4415 4416 4417 4418 4419
#ifdef CONFIG_DEBUG_FS
	codec->component.init_debugfs = soc_init_codec_debugfs;
	codec->component.debugfs_prefix = "codec";
#endif

4420 4421
	if (codec_drv->get_regmap)
		codec->component.regmap = codec_drv->get_regmap(dev);
4422

4423 4424 4425 4426 4427
	for (i = 0; i < num_dai; i++) {
		fixup_codec_formats(&dai_drv[i].playback);
		fixup_codec_formats(&dai_drv[i].capture);
	}

4428
	ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
4429
	if (ret < 0) {
4430 4431
		dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
		goto err_cleanup;
4432
	}
4433

4434 4435
	list_for_each_entry(dai, &codec->component.dai_list, list)
		dai->codec = codec;
4436

4437
	mutex_lock(&client_mutex);
4438
	snd_soc_component_add_unlocked(&codec->component);
4439
	list_add(&codec->list, &codec_list);
4440 4441
	mutex_unlock(&client_mutex);

4442 4443
	dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
		codec->component.name);
M
Mark Brown 已提交
4444
	return 0;
4445

4446 4447 4448
err_cleanup:
	snd_soc_component_cleanup(&codec->component);
err_free:
4449 4450
	kfree(codec);
	return ret;
M
Mark Brown 已提交
4451 4452 4453 4454 4455 4456
}
EXPORT_SYMBOL_GPL(snd_soc_register_codec);

/**
 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
 *
M
Mark Brown 已提交
4457
 * @codec: codec to unregister
M
Mark Brown 已提交
4458
 */
4459
void snd_soc_unregister_codec(struct device *dev)
M
Mark Brown 已提交
4460
{
4461 4462 4463 4464 4465 4466 4467 4468 4469 4470
	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
4471 4472
	mutex_lock(&client_mutex);
	list_del(&codec->list);
4473
	snd_soc_component_del_unlocked(&codec->component);
M
Mark Brown 已提交
4474 4475
	mutex_unlock(&client_mutex);

4476 4477
	dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
			codec->component.name);
4478

4479
	snd_soc_component_cleanup(&codec->component);
4480
	snd_soc_cache_exit(codec);
4481
	kfree(codec);
M
Mark Brown 已提交
4482 4483 4484
}
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);

4485 4486 4487 4488
/* Retrieve a card's name from device tree */
int snd_soc_of_parse_card_name(struct snd_soc_card *card,
			       const char *propname)
{
4489
	struct device_node *np;
4490 4491
	int ret;

4492 4493 4494 4495 4496 4497 4498
	if (!card->dev) {
		pr_err("card->dev is not set before calling %s\n", __func__);
		return -EINVAL;
	}

	np = card->dev->of_node;

4499 4500 4501 4502 4503 4504 4505 4506
	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,
4507
			"ASoC: Property '%s' could not be read: %d\n",
4508 4509 4510 4511 4512 4513 4514 4515
			propname, ret);
		return ret;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);

4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 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
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);

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
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);

4632 4633 4634 4635 4636 4637 4638 4639 4640
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);
4641
	if (num_routes < 0 || num_routes & 1) {
4642 4643 4644
		dev_err(card->dev,
			"ASoC: Property '%s' does not exist or its length is not even\n",
			propname);
4645 4646 4647 4648
		return -EINVAL;
	}
	num_routes /= 2;
	if (!num_routes) {
4649
		dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4650 4651 4652 4653 4654 4655 4656 4657
			propname);
		return -EINVAL;
	}

	routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
			      GFP_KERNEL);
	if (!routes) {
		dev_err(card->dev,
4658
			"ASoC: Could not allocate DAPM route table\n");
4659 4660 4661 4662 4663 4664 4665
		return -EINVAL;
	}

	for (i = 0; i < num_routes; i++) {
		ret = of_property_read_string_index(np, propname,
			2 * i, &routes[i].sink);
		if (ret) {
4666 4667 4668
			dev_err(card->dev,
				"ASoC: Property '%s' index %d could not be read: %d\n",
				propname, 2 * i, ret);
4669 4670 4671 4672 4673 4674
			return -EINVAL;
		}
		ret = of_property_read_string_index(np, propname,
			(2 * i) + 1, &routes[i].source);
		if (ret) {
			dev_err(card->dev,
4675 4676
				"ASoC: Property '%s' index %d could not be read: %d\n",
				propname, (2 * i) + 1, ret);
4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687
			return -EINVAL;
		}
	}

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

	return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);

4688
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4689 4690 4691
				     const char *prefix,
				     struct device_node **bitclkmaster,
				     struct device_node **framemaster)
4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731
{
	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;
			}
		}
	}

	/*
4732
	 * check "[prefix]continuous-clock"
4733 4734
	 * SND_SOC_DAIFMT_CLOCK_MASK area
	 */
4735 4736 4737 4738 4739
	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;
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

	/*
	 * 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);
4774 4775
	if (bit && bitclkmaster)
		*bitclkmaster = of_parse_phandle(np, prop, 0);
4776 4777 4778

	snprintf(prop, sizeof(prop), "%sframe-master", prefix);
	frame = !!of_get_property(np, prop, NULL);
4779 4780
	if (frame && framemaster)
		*framemaster = of_parse_phandle(np, prop, 0);
4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800

	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);

4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819
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;

4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838
		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;
4839
				continue;
4840
			}
X
Xiubo Li 已提交
4841 4842 4843 4844 4845 4846

			ret = 0;

			*dai_name = pos->dai_drv[id].name;
			if (!*dai_name)
				*dai_name = pos->name;
4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858
		}

		break;
	}
	mutex_unlock(&client_mutex);

	of_node_put(args.np);

	return ret;
}
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);

4859
static int __init snd_soc_init(void)
F
Frank Mandarino 已提交
4860
{
4861
#ifdef CONFIG_DEBUG_FS
4862 4863
	snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
	if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4864
		pr_warn("ASoC: Failed to create debugfs directory\n");
4865
		snd_soc_debugfs_root = NULL;
4866
	}
4867

4868
	if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4869 4870 4871
				 &codec_list_fops))
		pr_warn("ASoC: Failed to create CODEC list debugfs file\n");

4872
	if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
M
Mark Brown 已提交
4873 4874
				 &dai_list_fops))
		pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4875

4876
	if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4877 4878
				 &platform_list_fops))
		pr_warn("ASoC: Failed to create platform list debugfs file\n");
4879 4880
#endif

4881 4882
	snd_soc_util_init();

F
Frank Mandarino 已提交
4883 4884
	return platform_driver_register(&soc_driver);
}
4885
module_init(snd_soc_init);
F
Frank Mandarino 已提交
4886

M
Mark Brown 已提交
4887
static void __exit snd_soc_exit(void)
F
Frank Mandarino 已提交
4888
{
4889 4890
	snd_soc_util_exit();

4891
#ifdef CONFIG_DEBUG_FS
4892
	debugfs_remove_recursive(snd_soc_debugfs_root);
4893
#endif
4894
	platform_driver_unregister(&soc_driver);
F
Frank Mandarino 已提交
4895 4896 4897 4898
}
module_exit(snd_soc_exit);

/* Module information */
4899
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
F
Frank Mandarino 已提交
4900 4901
MODULE_DESCRIPTION("ALSA SoC Core");
MODULE_LICENSE("GPL");
4902
MODULE_ALIAS("platform:soc-audio");