forked from Minki/linux
3643 lines
92 KiB
C
3643 lines
92 KiB
C
/*
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* soc-core.c -- ALSA SoC Audio Layer
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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* Copyright (C) 2010 Slimlogic Ltd.
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* 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 :-
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* Richard Purdie <richard@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* TODO:
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* o Add hw rules to enforce rates, etc.
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* o More testing with other codecs/machines.
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* o Add more codecs and platforms to ensure good API coverage.
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* o Support TDM on PCM and I2S
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#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 <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dpcm.h>
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#include <sound/soc-topology.h>
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#include <sound/initval.h>
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#define CREATE_TRACE_POINTS
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#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;
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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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/*
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* This is a timeout to do a DAPM powerdown after a stream is closed().
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* It can be used to eliminate pops between different playback streams, e.g.
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* between two audio tracks.
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*/
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static int pmdown_time = 5000;
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module_param(pmdown_time, int, 0);
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MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
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/* returns the minimum number of bytes needed to represent
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* a particular given value */
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static int min_bytes_needed(unsigned long val)
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{
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int c = 0;
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int i;
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for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
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if (val & (1UL << i))
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break;
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c = (sizeof val * 8) - c;
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if (!c || (c % 8))
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c = (c + 8) / 8;
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else
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c /= 8;
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return c;
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}
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/* fill buf which is 'len' bytes with a formatted
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* string of the form 'reg: value\n' */
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static int format_register_str(struct snd_soc_codec *codec,
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unsigned int reg, char *buf, size_t len)
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{
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int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
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int regsize = codec->driver->reg_word_size * 2;
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int ret;
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/* +2 for ': ' and + 1 for '\n' */
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if (wordsize + regsize + 2 + 1 != len)
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return -EINVAL;
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sprintf(buf, "%.*x: ", wordsize, reg);
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buf += wordsize + 2;
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ret = snd_soc_read(codec, reg);
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if (ret < 0)
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memset(buf, 'X', regsize);
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else
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sprintf(buf, "%.*x", regsize, ret);
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buf[regsize] = '\n';
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/* no NUL-termination needed */
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return 0;
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}
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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,
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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;
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size_t total = 0;
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loff_t p = 0;
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wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
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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)
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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
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* entries for the default case */
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if (p >= pos) {
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if (total + len >= count - 1)
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break;
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format_register_str(codec, i, buf + total, len);
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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,
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struct device_attribute *attr, char *buf)
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{
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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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}
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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,
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struct device_attribute *attr, char *buf)
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{
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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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}
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static ssize_t pmdown_time_set(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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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)
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return ret;
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return count;
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}
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static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
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static struct attribute *soc_dev_attrs[] = {
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&dev_attr_codec_reg.attr,
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&dev_attr_pmdown_time.attr,
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NULL
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};
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static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
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struct attribute *attr, int idx)
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{
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struct device *dev = kobj_to_dev(kobj);
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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if (attr == &dev_attr_pmdown_time.attr)
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return attr->mode; /* always visible */
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return rtd->codec ? attr->mode : 0; /* enabled only with codec */
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}
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static const struct attribute_group soc_dapm_dev_group = {
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.attrs = soc_dapm_dev_attrs,
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.is_visible = soc_dev_attr_is_visible,
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};
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static const struct attribute_group soc_dev_roup = {
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.attrs = soc_dev_attrs,
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.is_visible = soc_dev_attr_is_visible,
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};
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static const struct attribute_group *soc_dev_attr_groups[] = {
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&soc_dapm_dev_group,
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&soc_dev_roup,
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NULL
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};
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#ifdef CONFIG_DEBUG_FS
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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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{
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ssize_t ret;
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struct snd_soc_codec *codec = file->private_data;
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char *buf;
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if (*ppos < 0 || !count)
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return -EINVAL;
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buf = kmalloc(count, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = soc_codec_reg_show(codec, buf, count, *ppos);
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if (ret >= 0) {
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if (copy_to_user(user_buf, buf, ret)) {
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kfree(buf);
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return -EFAULT;
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}
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*ppos += ret;
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}
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kfree(buf);
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return ret;
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}
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static ssize_t codec_reg_write_file(struct file *file,
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const char __user *user_buf, size_t count, loff_t *ppos)
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{
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char buf[32];
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size_t buf_size;
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char *start = buf;
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unsigned long reg, value;
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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));
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if (copy_from_user(buf, user_buf, buf_size))
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return -EFAULT;
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buf[buf_size] = 0;
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while (*start == ' ')
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start++;
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reg = simple_strtoul(start, &start, 16);
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while (*start == ' ')
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start++;
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ret = kstrtoul(start, 16, &value);
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if (ret)
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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;
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}
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static const struct file_operations codec_reg_fops = {
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.open = simple_open,
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.read = codec_reg_read_file,
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.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->card->debugfs_card_root)
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return;
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if (component->debugfs_prefix) {
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char *name;
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name = kasprintf(GFP_KERNEL, "%s:%s",
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component->debugfs_prefix, component->name);
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if (name) {
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component->debugfs_root = debugfs_create_dir(name,
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component->card->debugfs_card_root);
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kfree(name);
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}
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} else {
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component->debugfs_root = debugfs_create_dir(component->name,
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component->card->debugfs_card_root);
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}
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if (!component->debugfs_root) {
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dev_warn(component->dev,
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"ASoC: Failed to create component debugfs directory\n");
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return;
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}
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snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
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component->debugfs_root);
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if (component->init_debugfs)
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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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}
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static void soc_init_codec_debugfs(struct snd_soc_component *component)
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{
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struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
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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);
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if (!codec->debugfs_reg)
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dev_warn(codec->dev,
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"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,
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size_t count, loff_t *ppos)
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{
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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;
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if (!buf)
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return -ENOMEM;
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mutex_lock(&client_mutex);
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list_for_each_entry(codec, &codec_list, list) {
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len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
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codec->component.name);
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if (len >= 0)
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ret += len;
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if (ret > PAGE_SIZE) {
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ret = PAGE_SIZE;
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break;
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}
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}
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mutex_unlock(&client_mutex);
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if (ret >= 0)
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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kfree(buf);
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return ret;
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}
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static const struct file_operations codec_list_fops = {
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.read = codec_list_read_file,
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.llseek = default_llseek,/* read accesses f_pos */
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};
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static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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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;
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if (!buf)
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return -ENOMEM;
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mutex_lock(&client_mutex);
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list_for_each_entry(component, &component_list, list) {
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list_for_each_entry(dai, &component->dai_list, list) {
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len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
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dai->name);
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if (len >= 0)
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ret += len;
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if (ret > PAGE_SIZE) {
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ret = PAGE_SIZE;
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break;
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}
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}
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}
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mutex_unlock(&client_mutex);
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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kfree(buf);
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return ret;
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}
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static const struct file_operations dai_list_fops = {
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.read = dai_list_read_file,
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.llseek = default_llseek,/* read accesses f_pos */
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};
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static ssize_t platform_list_read_file(struct file *file,
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char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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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;
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if (!buf)
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return -ENOMEM;
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mutex_lock(&client_mutex);
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list_for_each_entry(platform, &platform_list, list) {
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len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
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platform->component.name);
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if (len >= 0)
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ret += len;
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if (ret > PAGE_SIZE) {
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ret = PAGE_SIZE;
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break;
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}
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}
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mutex_unlock(&client_mutex);
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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kfree(buf);
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return ret;
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}
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static const struct file_operations platform_list_fops = {
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.read = platform_list_read_file,
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.llseek = default_llseek,/* read accesses f_pos */
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};
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static void soc_init_card_debugfs(struct snd_soc_card *card)
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{
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if (!snd_soc_debugfs_root)
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return;
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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;
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}
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card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
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card->debugfs_card_root,
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&card->pop_time);
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if (!card->debugfs_pop_time)
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dev_warn(card->dev,
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"ASoC: Failed to create pop time debugfs file\n");
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}
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static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
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{
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debugfs_remove_recursive(card->debugfs_card_root);
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}
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static void snd_soc_debugfs_init(void)
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{
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snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
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if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
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pr_warn("ASoC: Failed to create debugfs directory\n");
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snd_soc_debugfs_root = NULL;
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return;
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}
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if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
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&codec_list_fops))
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pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
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if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
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&dai_list_fops))
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pr_warn("ASoC: Failed to create DAI list debugfs file\n");
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if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
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&platform_list_fops))
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pr_warn("ASoC: Failed to create platform list debugfs file\n");
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}
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static void snd_soc_debugfs_exit(void)
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{
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debugfs_remove_recursive(snd_soc_debugfs_root);
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}
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|
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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(
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struct snd_soc_component *component)
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{
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}
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|
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static inline void soc_cleanup_component_debugfs(
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struct snd_soc_component *component)
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{
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}
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static inline void soc_init_card_debugfs(struct snd_soc_card *card)
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{
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}
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static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
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{
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}
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static inline void snd_soc_debugfs_init(void)
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{
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}
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static inline void snd_soc_debugfs_exit(void)
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{
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}
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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;
|
|
}
|
|
dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
|
|
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];
|
|
}
|
|
dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
|
|
|
|
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.
|
|
*/
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
/* powers down audio subsystem for suspend */
|
|
int snd_soc_suspend(struct device *dev)
|
|
{
|
|
struct snd_soc_card *card = dev_get_drvdata(dev);
|
|
struct snd_soc_codec *codec;
|
|
int i, j;
|
|
|
|
/* If the card is not initialized yet there is nothing to do */
|
|
if (!card->instantiated)
|
|
return 0;
|
|
|
|
/* Due to the resume being scheduled into a workqueue we could
|
|
* suspend before that's finished - wait for it to complete.
|
|
*/
|
|
snd_power_lock(card->snd_card);
|
|
snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
|
|
snd_power_unlock(card->snd_card);
|
|
|
|
/* we're going to block userspace touching us until resume completes */
|
|
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
|
|
|
|
/* mute any active DACs */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
/* suspend all pcms */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
snd_pcm_suspend_all(card->rtd[i].pcm);
|
|
}
|
|
|
|
if (card->suspend_pre)
|
|
card->suspend_pre(card);
|
|
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
|
|
cpu_dai->driver->suspend(cpu_dai);
|
|
}
|
|
|
|
/* close any waiting streams */
|
|
for (i = 0; i < card->num_rtd; i++)
|
|
flush_delayed_work(&card->rtd[i].delayed_work);
|
|
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
snd_soc_dapm_stream_event(&card->rtd[i],
|
|
SNDRV_PCM_STREAM_PLAYBACK,
|
|
SND_SOC_DAPM_STREAM_SUSPEND);
|
|
|
|
snd_soc_dapm_stream_event(&card->rtd[i],
|
|
SNDRV_PCM_STREAM_CAPTURE,
|
|
SND_SOC_DAPM_STREAM_SUSPEND);
|
|
}
|
|
|
|
/* Recheck all endpoints too, their state is affected by suspend */
|
|
dapm_mark_endpoints_dirty(card);
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
|
|
/* suspend all CODECs */
|
|
list_for_each_entry(codec, &card->codec_dev_list, card_list) {
|
|
/* If there are paths active then the CODEC will be held with
|
|
* bias _ON and should not be suspended. */
|
|
if (!codec->suspended) {
|
|
switch (codec->dapm.bias_level) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
/*
|
|
* 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,
|
|
"ASoC: idle_bias_off CODEC on over suspend\n");
|
|
break;
|
|
}
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
if (codec->driver->suspend)
|
|
codec->driver->suspend(codec);
|
|
codec->suspended = 1;
|
|
if (codec->component.regmap)
|
|
regcache_mark_dirty(codec->component.regmap);
|
|
/* deactivate pins to sleep state */
|
|
pinctrl_pm_select_sleep_state(codec->dev);
|
|
break;
|
|
default:
|
|
dev_dbg(codec->dev,
|
|
"ASoC: CODEC is on over suspend\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
|
|
cpu_dai->driver->suspend(cpu_dai);
|
|
|
|
/* deactivate pins to sleep state */
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
}
|
|
|
|
if (card->suspend_post)
|
|
card->suspend_post(card);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_suspend);
|
|
|
|
/* 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)
|
|
{
|
|
struct snd_soc_card *card =
|
|
container_of(work, struct snd_soc_card, deferred_resume_work);
|
|
struct snd_soc_codec *codec;
|
|
int i, j;
|
|
|
|
/* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
|
|
* so userspace apps are blocked from touching us
|
|
*/
|
|
|
|
dev_dbg(card->dev, "ASoC: starting resume work\n");
|
|
|
|
/* Bring us up into D2 so that DAPM starts enabling things */
|
|
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
|
|
|
|
if (card->resume_pre)
|
|
card->resume_pre(card);
|
|
|
|
/* resume control bus DAIs */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
|
|
cpu_dai->driver->resume(cpu_dai);
|
|
}
|
|
|
|
list_for_each_entry(codec, &card->codec_dev_list, card_list) {
|
|
if (codec->suspended) {
|
|
if (codec->driver->resume)
|
|
codec->driver->resume(codec);
|
|
codec->suspended = 0;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
snd_soc_dapm_stream_event(&card->rtd[i],
|
|
SNDRV_PCM_STREAM_PLAYBACK,
|
|
SND_SOC_DAPM_STREAM_RESUME);
|
|
|
|
snd_soc_dapm_stream_event(&card->rtd[i],
|
|
SNDRV_PCM_STREAM_CAPTURE,
|
|
SND_SOC_DAPM_STREAM_RESUME);
|
|
}
|
|
|
|
/* unmute any active DACs */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
|
|
cpu_dai->driver->resume(cpu_dai);
|
|
}
|
|
|
|
if (card->resume_post)
|
|
card->resume_post(card);
|
|
|
|
dev_dbg(card->dev, "ASoC: resume work completed\n");
|
|
|
|
/* userspace can access us now we are back as we were before */
|
|
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
|
|
|
|
/* Recheck all endpoints too, their state is affected by suspend */
|
|
dapm_mark_endpoints_dirty(card);
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
}
|
|
|
|
/* powers up audio subsystem after a suspend */
|
|
int snd_soc_resume(struct device *dev)
|
|
{
|
|
struct snd_soc_card *card = dev_get_drvdata(dev);
|
|
bool bus_control = false;
|
|
int i;
|
|
|
|
/* If the card is not initialized yet there is nothing to do */
|
|
if (!card->instantiated)
|
|
return 0;
|
|
|
|
/* activate pins from sleep state */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
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;
|
|
|
|
if (cpu_dai->active)
|
|
pinctrl_pm_select_default_state(cpu_dai->dev);
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* DAIs that also act as the control bus master 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.
|
|
*/
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
bus_control |= cpu_dai->driver->bus_control;
|
|
}
|
|
if (bus_control) {
|
|
dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
|
|
soc_resume_deferred(&card->deferred_resume_work);
|
|
} else {
|
|
dev_dbg(dev, "ASoC: Scheduling resume work\n");
|
|
if (!schedule_work(&card->deferred_resume_work))
|
|
dev_err(dev, "ASoC: resume work item may be lost\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_resume);
|
|
#else
|
|
#define snd_soc_suspend NULL
|
|
#define snd_soc_resume NULL
|
|
#endif
|
|
|
|
static const struct snd_soc_dai_ops null_dai_ops = {
|
|
};
|
|
|
|
static struct snd_soc_component *soc_find_component(
|
|
const struct device_node *of_node, const char *name)
|
|
{
|
|
struct snd_soc_component *component;
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
|
|
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;
|
|
}
|
|
|
|
static struct snd_soc_dai *snd_soc_find_dai(
|
|
const struct snd_soc_dai_link_component *dlc)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_dai *dai;
|
|
struct device_node *component_of_node;
|
|
|
|
lockdep_assert_held(&client_mutex);
|
|
|
|
/* Find CPU DAI from registered DAIs*/
|
|
list_for_each_entry(component, &component_list, list) {
|
|
component_of_node = component->dev->of_node;
|
|
if (!component_of_node && component->dev->parent)
|
|
component_of_node = component->dev->parent->of_node;
|
|
|
|
if (dlc->of_node && component_of_node != dlc->of_node)
|
|
continue;
|
|
if (dlc->name && strcmp(component->name, dlc->name))
|
|
continue;
|
|
list_for_each_entry(dai, &component->dai_list, list) {
|
|
if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
|
|
continue;
|
|
|
|
return dai;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int soc_bind_dai_link(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = &card->dai_link[num];
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
|
|
struct snd_soc_dai_link_component *codecs = dai_link->codecs;
|
|
struct snd_soc_dai_link_component cpu_dai_component;
|
|
struct snd_soc_dai **codec_dais = rtd->codec_dais;
|
|
struct snd_soc_platform *platform;
|
|
const char *platform_name;
|
|
int i;
|
|
|
|
dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
|
|
|
|
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);
|
|
if (!rtd->cpu_dai) {
|
|
dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
|
|
dai_link->cpu_dai_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
rtd->num_codecs = dai_link->num_codecs;
|
|
|
|
/* Find CODEC from registered CODECs */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dais[i] = snd_soc_find_dai(&codecs[i]);
|
|
if (!codec_dais[i]) {
|
|
dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
|
|
codecs[i].dai_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
}
|
|
|
|
/* Single codec links expect codec and codec_dai in runtime data */
|
|
rtd->codec_dai = codec_dais[0];
|
|
rtd->codec = rtd->codec_dai->codec;
|
|
|
|
/* if there's no platform we match on the empty platform */
|
|
platform_name = dai_link->platform_name;
|
|
if (!platform_name && !dai_link->platform_of_node)
|
|
platform_name = "snd-soc-dummy";
|
|
|
|
/* find one from the set of registered platforms */
|
|
list_for_each_entry(platform, &platform_list, list) {
|
|
if (dai_link->platform_of_node) {
|
|
if (platform->dev->of_node !=
|
|
dai_link->platform_of_node)
|
|
continue;
|
|
} else {
|
|
if (strcmp(platform->component.name, platform_name))
|
|
continue;
|
|
}
|
|
|
|
rtd->platform = platform;
|
|
}
|
|
if (!rtd->platform) {
|
|
dev_err(card->dev, "ASoC: platform %s not registered\n",
|
|
dai_link->platform_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
card->num_rtd++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_remove_component(struct snd_soc_component *component)
|
|
{
|
|
if (!component->probed)
|
|
return;
|
|
|
|
/* This is a HACK and will be removed soon */
|
|
if (component->codec)
|
|
list_del(&component->codec->card_list);
|
|
|
|
if (component->remove)
|
|
component->remove(component);
|
|
|
|
snd_soc_dapm_free(snd_soc_component_get_dapm(component));
|
|
|
|
soc_cleanup_component_debugfs(component);
|
|
component->probed = 0;
|
|
module_put(component->dev->driver->owner);
|
|
}
|
|
|
|
static void soc_remove_dai(struct snd_soc_dai *dai, int order)
|
|
{
|
|
int err;
|
|
|
|
if (dai && dai->probed &&
|
|
dai->driver->remove_order == order) {
|
|
if (dai->driver->remove) {
|
|
err = dai->driver->remove(dai);
|
|
if (err < 0)
|
|
dev_err(dai->dev,
|
|
"ASoC: failed to remove %s: %d\n",
|
|
dai->name, err);
|
|
}
|
|
dai->probed = 0;
|
|
}
|
|
}
|
|
|
|
static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
|
|
int i;
|
|
|
|
/* unregister the rtd device */
|
|
if (rtd->dev_registered) {
|
|
device_unregister(rtd->dev);
|
|
rtd->dev_registered = 0;
|
|
}
|
|
|
|
/* remove the CODEC DAI */
|
|
for (i = 0; i < rtd->num_codecs; i++)
|
|
soc_remove_dai(rtd->codec_dais[i], order);
|
|
|
|
soc_remove_dai(rtd->cpu_dai, order);
|
|
}
|
|
|
|
static void soc_remove_link_components(struct snd_soc_card *card, int num,
|
|
int order)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_platform *platform = rtd->platform;
|
|
struct snd_soc_component *component;
|
|
int i;
|
|
|
|
/* remove the platform */
|
|
if (platform && platform->component.driver->remove_order == order)
|
|
soc_remove_component(&platform->component);
|
|
|
|
/* remove the CODEC-side CODEC */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
component = rtd->codec_dais[i]->component;
|
|
if (component->driver->remove_order == order)
|
|
soc_remove_component(component);
|
|
}
|
|
|
|
/* remove any CPU-side CODEC */
|
|
if (cpu_dai) {
|
|
if (cpu_dai->component->driver->remove_order == order)
|
|
soc_remove_component(cpu_dai->component);
|
|
}
|
|
}
|
|
|
|
static void soc_remove_dai_links(struct snd_soc_card *card)
|
|
{
|
|
int 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_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);
|
|
}
|
|
|
|
card->num_rtd = 0;
|
|
}
|
|
|
|
static void soc_set_name_prefix(struct snd_soc_card *card,
|
|
struct snd_soc_component *component)
|
|
{
|
|
int i;
|
|
|
|
if (card->codec_conf == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < card->num_configs; i++) {
|
|
struct snd_soc_codec_conf *map = &card->codec_conf[i];
|
|
if (map->of_node && component->dev->of_node != map->of_node)
|
|
continue;
|
|
if (map->dev_name && strcmp(component->name, map->dev_name))
|
|
continue;
|
|
component->name_prefix = map->name_prefix;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int soc_probe_component(struct snd_soc_card *card,
|
|
struct snd_soc_component *component)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
|
|
struct snd_soc_dai *dai;
|
|
int ret;
|
|
|
|
if (component->probed)
|
|
return 0;
|
|
|
|
component->card = card;
|
|
dapm->card = card;
|
|
soc_set_name_prefix(card, component);
|
|
|
|
if (!try_module_get(component->dev->driver->owner))
|
|
return -ENODEV;
|
|
|
|
soc_init_component_debugfs(component);
|
|
|
|
if (component->dapm_widgets) {
|
|
ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
|
|
component->num_dapm_widgets);
|
|
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to create new controls %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(dai, &component->dai_list, list) {
|
|
ret = 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;
|
|
}
|
|
}
|
|
|
|
if (component->probe) {
|
|
ret = component->probe(component);
|
|
if (ret < 0) {
|
|
dev_err(component->dev,
|
|
"ASoC: failed to probe component %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
/* This is a HACK and will be removed soon */
|
|
if (component->codec)
|
|
list_add(&component->codec->card_list, &card->codec_dev_list);
|
|
|
|
return 0;
|
|
|
|
err_probe:
|
|
soc_cleanup_component_debugfs(component);
|
|
module_put(component->dev->driver->owner);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void rtd_release(struct device *dev)
|
|
{
|
|
kfree(dev);
|
|
}
|
|
|
|
static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
|
|
const char *name)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* register the rtd device */
|
|
rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
|
|
if (!rtd->dev)
|
|
return -ENOMEM;
|
|
device_initialize(rtd->dev);
|
|
rtd->dev->parent = rtd->card->dev;
|
|
rtd->dev->release = rtd_release;
|
|
rtd->dev->groups = soc_dev_attr_groups;
|
|
dev_set_name(rtd->dev, "%s", name);
|
|
dev_set_drvdata(rtd->dev, rtd);
|
|
mutex_init(&rtd->pcm_mutex);
|
|
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);
|
|
ret = device_add(rtd->dev);
|
|
if (ret < 0) {
|
|
/* calling put_device() here to free the rtd->dev */
|
|
put_device(rtd->dev);
|
|
dev_err(rtd->card->dev,
|
|
"ASoC: failed to register runtime device: %d\n", ret);
|
|
return ret;
|
|
}
|
|
rtd->dev_registered = 1;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
struct snd_soc_component *component;
|
|
int i, ret;
|
|
|
|
/* probe the CPU-side component, if it is a CODEC */
|
|
component = rtd->cpu_dai->component;
|
|
if (component->driver->probe_order == order) {
|
|
ret = soc_probe_component(card, component);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* probe the CODEC-side components */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
component = rtd->codec_dais[i]->component;
|
|
if (component->driver->probe_order == order) {
|
|
ret = soc_probe_component(card, component);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* probe the platform */
|
|
if (platform->component.driver->probe_order == order) {
|
|
ret = soc_probe_component(card, &platform->component);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_probe_dai(struct snd_soc_dai *dai, int order)
|
|
{
|
|
int ret;
|
|
|
|
if (!dai->probed && dai->driver->probe_order == order) {
|
|
if (dai->driver->probe) {
|
|
ret = dai->driver->probe(dai);
|
|
if (ret < 0) {
|
|
dev_err(dai->dev,
|
|
"ASoC: failed to probe DAI %s: %d\n",
|
|
dai->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
dai->probed = 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_link_dai_widgets(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *dai_link,
|
|
struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_dapm_widget *play_w, *capture_w;
|
|
int ret;
|
|
|
|
if (rtd->num_codecs > 1)
|
|
dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
|
|
|
|
/* 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,
|
|
dai_link->num_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,
|
|
dai_link->num_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;
|
|
}
|
|
|
|
static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = &card->dai_link[num];
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int i, ret;
|
|
|
|
dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
|
|
card->name, num, order);
|
|
|
|
/* set default power off timeout */
|
|
rtd->pmdown_time = pmdown_time;
|
|
|
|
ret = soc_probe_dai(cpu_dai, order);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* probe the CODEC DAI */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
ret = soc_probe_dai(rtd->codec_dais[i], order);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* complete DAI probe during last probe */
|
|
if (order != SND_SOC_COMP_ORDER_LAST)
|
|
return 0;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
if (dai_link->dai_fmt)
|
|
snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
|
|
|
|
ret = soc_post_component_init(rtd, dai_link->name);
|
|
if (ret)
|
|
return ret;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
/* add DPCM sysfs entries */
|
|
if (dai_link->dynamic)
|
|
soc_dpcm_debugfs_add(rtd);
|
|
#endif
|
|
|
|
if (cpu_dai->driver->compress_dai) {
|
|
/*create compress_device"*/
|
|
ret = soc_new_compress(rtd, num);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: can't create compress %s\n",
|
|
dai_link->stream_name);
|
|
return ret;
|
|
}
|
|
} else {
|
|
|
|
if (!dai_link->params) {
|
|
/* create the pcm */
|
|
ret = soc_new_pcm(rtd, num);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
|
|
dai_link->stream_name, ret);
|
|
return ret;
|
|
}
|
|
} else {
|
|
INIT_DELAYED_WORK(&rtd->delayed_work,
|
|
codec2codec_close_delayed_work);
|
|
|
|
/* link the DAI widgets */
|
|
ret = soc_link_dai_widgets(card, dai_link, rtd);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
|
|
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
|
|
const char *name = aux_dev->codec_name;
|
|
|
|
rtd->component = soc_find_component(aux_dev->codec_of_node, name);
|
|
if (!rtd->component) {
|
|
if (aux_dev->codec_of_node)
|
|
name = of_node_full_name(aux_dev->codec_of_node);
|
|
|
|
dev_err(card->dev, "ASoC: %s not registered\n", name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
|
|
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
|
|
int ret;
|
|
|
|
ret = soc_probe_component(card, rtd->component);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* do machine specific initialization */
|
|
if (aux_dev->init) {
|
|
ret = aux_dev->init(rtd->component);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: failed to init %s: %d\n",
|
|
aux_dev->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return soc_post_component_init(rtd, aux_dev->name);
|
|
}
|
|
|
|
static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
|
|
struct snd_soc_component *component = rtd->component;
|
|
|
|
/* unregister the rtd device */
|
|
if (rtd->dev_registered) {
|
|
device_unregister(rtd->dev);
|
|
rtd->dev_registered = 0;
|
|
}
|
|
|
|
if (component && component->probed)
|
|
soc_remove_component(component);
|
|
}
|
|
|
|
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
|
|
{
|
|
int ret;
|
|
|
|
if (codec->cache_init)
|
|
return 0;
|
|
|
|
ret = snd_soc_cache_init(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev,
|
|
"ASoC: Failed to set cache compression type: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
codec->cache_init = 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
|
|
* @rtd: The runtime for which the DAI link format should be changed
|
|
* @dai_fmt: The new DAI link format
|
|
*
|
|
* This function updates the DAI link format for all DAIs connected to the DAI
|
|
* link for the specified runtime.
|
|
*
|
|
* Note: For setups with a static format set the dai_fmt field in the
|
|
* corresponding snd_dai_link struct instead of using this function.
|
|
*
|
|
* Returns 0 on success, otherwise a negative error code.
|
|
*/
|
|
int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
|
|
unsigned int dai_fmt)
|
|
{
|
|
struct snd_soc_dai **codec_dais = rtd->codec_dais;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
struct snd_soc_dai *codec_dai = codec_dais[i];
|
|
|
|
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);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
|
|
if (cpu_dai->codec) {
|
|
unsigned int inv_dai_fmt;
|
|
|
|
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
|
|
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
|
|
break;
|
|
}
|
|
|
|
dai_fmt = inv_dai_fmt;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP) {
|
|
dev_warn(cpu_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
|
|
|
|
static int snd_soc_instantiate_card(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
int ret, i, order;
|
|
|
|
mutex_lock(&client_mutex);
|
|
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
|
|
|
|
/* bind DAIs */
|
|
for (i = 0; i < card->num_links; i++) {
|
|
ret = soc_bind_dai_link(card, i);
|
|
if (ret != 0)
|
|
goto base_error;
|
|
}
|
|
|
|
/* bind aux_devs too */
|
|
for (i = 0; i < card->num_aux_devs; i++) {
|
|
ret = soc_bind_aux_dev(card, i);
|
|
if (ret != 0)
|
|
goto base_error;
|
|
}
|
|
|
|
/* initialize the register cache for each available codec */
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (codec->cache_init)
|
|
continue;
|
|
ret = snd_soc_init_codec_cache(codec);
|
|
if (ret < 0)
|
|
goto base_error;
|
|
}
|
|
|
|
/* card bind complete so register a sound card */
|
|
ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
|
|
card->owner, 0, &card->snd_card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: can't create sound card for card %s: %d\n",
|
|
card->name, ret);
|
|
goto base_error;
|
|
}
|
|
|
|
soc_init_card_debugfs(card);
|
|
|
|
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);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
/* deferred resume work */
|
|
INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
|
|
#endif
|
|
|
|
if (card->dapm_widgets)
|
|
snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
|
|
card->num_dapm_widgets);
|
|
|
|
if (card->of_dapm_widgets)
|
|
snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
|
|
card->num_of_dapm_widgets);
|
|
|
|
/* initialise the sound card only once */
|
|
if (card->probe) {
|
|
ret = card->probe(card);
|
|
if (ret < 0)
|
|
goto card_probe_error;
|
|
}
|
|
|
|
/* probe all components used by 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_components(card, i, order);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to instantiate card %d\n",
|
|
ret);
|
|
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) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to instantiate card %d\n",
|
|
ret);
|
|
goto probe_dai_err;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < card->num_aux_devs; i++) {
|
|
ret = soc_probe_aux_dev(card, i);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to add auxiliary devices %d\n",
|
|
ret);
|
|
goto probe_aux_dev_err;
|
|
}
|
|
}
|
|
|
|
snd_soc_dapm_link_dai_widgets(card);
|
|
snd_soc_dapm_connect_dai_link_widgets(card);
|
|
|
|
if (card->controls)
|
|
snd_soc_add_card_controls(card, card->controls, card->num_controls);
|
|
|
|
if (card->dapm_routes)
|
|
snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
|
|
card->num_dapm_routes);
|
|
|
|
if (card->of_dapm_routes)
|
|
snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
|
|
card->num_of_dapm_routes);
|
|
|
|
snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
|
|
"%s", card->name);
|
|
snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
|
|
"%s", card->long_name ? card->long_name : card->name);
|
|
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;
|
|
}
|
|
}
|
|
|
|
if (card->late_probe) {
|
|
ret = card->late_probe(card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
|
|
card->name, ret);
|
|
goto probe_aux_dev_err;
|
|
}
|
|
}
|
|
|
|
snd_soc_dapm_new_widgets(card);
|
|
|
|
ret = snd_card_register(card->snd_card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
|
|
ret);
|
|
goto probe_aux_dev_err;
|
|
}
|
|
|
|
card->instantiated = 1;
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
mutex_unlock(&card->mutex);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
return 0;
|
|
|
|
probe_aux_dev_err:
|
|
for (i = 0; i < card->num_aux_devs; i++)
|
|
soc_remove_aux_dev(card, i);
|
|
|
|
probe_dai_err:
|
|
soc_remove_dai_links(card);
|
|
|
|
card_probe_error:
|
|
if (card->remove)
|
|
card->remove(card);
|
|
|
|
soc_cleanup_card_debugfs(card);
|
|
snd_card_free(card->snd_card);
|
|
|
|
base_error:
|
|
mutex_unlock(&card->mutex);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* probes a new socdev */
|
|
static int soc_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
|
|
|
/*
|
|
* no card, so machine driver should be registering card
|
|
* we should not be here in that case so ret error
|
|
*/
|
|
if (!card)
|
|
return -EINVAL;
|
|
|
|
dev_warn(&pdev->dev,
|
|
"ASoC: machine %s should use snd_soc_register_card()\n",
|
|
card->name);
|
|
|
|
/* Bodge while we unpick instantiation */
|
|
card->dev = &pdev->dev;
|
|
|
|
return snd_soc_register_card(card);
|
|
}
|
|
|
|
static int soc_cleanup_card_resources(struct snd_soc_card *card)
|
|
{
|
|
int i;
|
|
|
|
/* make sure any delayed work runs */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
|
|
flush_delayed_work(&rtd->delayed_work);
|
|
}
|
|
|
|
/* remove auxiliary devices */
|
|
for (i = 0; i < card->num_aux_devs; i++)
|
|
soc_remove_aux_dev(card, i);
|
|
|
|
/* remove and free each DAI */
|
|
soc_remove_dai_links(card);
|
|
|
|
soc_cleanup_card_debugfs(card);
|
|
|
|
/* remove the card */
|
|
if (card->remove)
|
|
card->remove(card);
|
|
|
|
snd_soc_dapm_free(&card->dapm);
|
|
|
|
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);
|
|
|
|
snd_soc_unregister_card(card);
|
|
return 0;
|
|
}
|
|
|
|
int snd_soc_poweroff(struct device *dev)
|
|
{
|
|
struct snd_soc_card *card = dev_get_drvdata(dev);
|
|
int i;
|
|
|
|
if (!card->instantiated)
|
|
return 0;
|
|
|
|
/* Flush out pmdown_time work - we actually do want to run it
|
|
* now, we're shutting down so no imminent restart. */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
|
|
flush_delayed_work(&rtd->delayed_work);
|
|
}
|
|
|
|
snd_soc_dapm_shutdown(card);
|
|
|
|
/* deactivate pins to sleep state */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int j;
|
|
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
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);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_poweroff);
|
|
|
|
const struct dev_pm_ops snd_soc_pm_ops = {
|
|
.suspend = snd_soc_suspend,
|
|
.resume = snd_soc_resume,
|
|
.freeze = snd_soc_suspend,
|
|
.thaw = snd_soc_resume,
|
|
.poweroff = snd_soc_poweroff,
|
|
.restore = snd_soc_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
|
|
|
|
/* ASoC platform driver */
|
|
static struct platform_driver soc_driver = {
|
|
.driver = {
|
|
.name = "soc-audio",
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = soc_probe,
|
|
.remove = soc_remove,
|
|
};
|
|
|
|
/**
|
|
* snd_soc_cnew - create new control
|
|
* @_template: control template
|
|
* @data: control private data
|
|
* @long_name: control long name
|
|
* @prefix: control name prefix
|
|
*
|
|
* Create a new mixer control from a template control.
|
|
*
|
|
* Returns 0 for success, else error.
|
|
*/
|
|
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
|
|
void *data, const char *long_name,
|
|
const char *prefix)
|
|
{
|
|
struct snd_kcontrol_new template;
|
|
struct snd_kcontrol *kcontrol;
|
|
char *name = NULL;
|
|
|
|
memcpy(&template, _template, sizeof(template));
|
|
template.index = 0;
|
|
|
|
if (!long_name)
|
|
long_name = template.name;
|
|
|
|
if (prefix) {
|
|
name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
|
|
if (!name)
|
|
return NULL;
|
|
|
|
template.name = name;
|
|
} else {
|
|
template.name = long_name;
|
|
}
|
|
|
|
kcontrol = snd_ctl_new1(&template, data);
|
|
|
|
kfree(name);
|
|
|
|
return kcontrol;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_cnew);
|
|
|
|
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) {
|
|
dev_err(dev, "ASoC: Failed to add %s: %d\n",
|
|
control->name, err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* snd_soc_add_codec_controls - add an array of controls to a codec.
|
|
* Convenience function to add a list of controls. Many codecs were
|
|
* duplicating this code.
|
|
*
|
|
* @codec: codec to add controls to
|
|
* @controls: array of controls to add
|
|
* @num_controls: number of elements in the array
|
|
*
|
|
* Return 0 for success, else error.
|
|
*/
|
|
int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
|
|
const struct snd_kcontrol_new *controls, unsigned int num_controls)
|
|
{
|
|
return snd_soc_add_component_controls(&codec->component, controls,
|
|
num_controls);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
|
|
|
|
/**
|
|
* snd_soc_add_platform_controls - add an array of controls to a platform.
|
|
* Convenience function to add a list of controls.
|
|
*
|
|
* @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,
|
|
const struct snd_kcontrol_new *controls, unsigned int num_controls)
|
|
{
|
|
return snd_soc_add_component_controls(&platform->component, controls,
|
|
num_controls);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
|
|
|
|
/**
|
|
* 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->component->card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, dai->dev, controls, num_controls,
|
|
NULL, dai);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
if (dai->driver && dai->driver->ops->set_sysclk)
|
|
return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
|
|
else if (dai->codec && dai->codec->driver->set_sysclk)
|
|
return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
|
|
freq, dir);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
|
|
|
|
/**
|
|
* snd_soc_codec_set_sysclk - configure CODEC system or master clock.
|
|
* @codec: CODEC
|
|
* @clk_id: DAI specific clock ID
|
|
* @source: Source for the clock
|
|
* @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,
|
|
int source, unsigned int freq, int dir)
|
|
{
|
|
if (codec->driver->set_sysclk)
|
|
return codec->driver->set_sysclk(codec, clk_id, source,
|
|
freq, dir);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
|
|
|
|
/**
|
|
* snd_soc_dai_set_clkdiv - configure DAI clock dividers.
|
|
* @dai: DAI
|
|
* @div_id: DAI specific clock divider ID
|
|
* @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)
|
|
{
|
|
if (dai->driver && dai->driver->ops->set_clkdiv)
|
|
return dai->driver->ops->set_clkdiv(dai, div_id, div);
|
|
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
|
|
* @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_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
|
|
unsigned int freq_in, unsigned int freq_out)
|
|
{
|
|
if (dai->driver && dai->driver->ops->set_pll)
|
|
return dai->driver->ops->set_pll(dai, pll_id, source,
|
|
freq_in, freq_out);
|
|
else if (dai->codec && dai->codec->driver->set_pll)
|
|
return dai->codec->driver->set_pll(dai->codec, pll_id, source,
|
|
freq_in, freq_out);
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
if (dai->driver == NULL)
|
|
return -EINVAL;
|
|
if (dai->driver->ops->set_fmt == NULL)
|
|
return -ENOTSUPP;
|
|
return dai->driver->ops->set_fmt(dai, fmt);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
|
|
|
|
/**
|
|
* snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
|
|
* @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.
|
|
*/
|
|
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
|
|
* @dai: The DAI to configure
|
|
* @tx_mask: bitmask representing active TX slots.
|
|
* @rx_mask: bitmask representing active RX slots.
|
|
* @slots: Number of slots in use.
|
|
* @slot_width: Width in bits for each slot.
|
|
*
|
|
* This function configures the specified DAI for TDM operation. @slot contains
|
|
* the total number of slots of the TDM stream and @slot_with the width of each
|
|
* slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
|
|
* active slots of the TDM stream for the specified DAI, i.e. which slots the
|
|
* DAI should write to or read from. If a bit is set the corresponding slot is
|
|
* active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
|
|
* the first slot, bit 1 to the second slot and so on. The first active slot
|
|
* maps to the first channel of the DAI, the second active slot to the second
|
|
* channel and so on.
|
|
*
|
|
* TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
|
|
* @rx_mask and @slot_width will be ignored.
|
|
*
|
|
* Returns 0 on success, a negative error code otherwise.
|
|
*/
|
|
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
|
|
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
|
|
{
|
|
if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
|
|
dai->driver->ops->xlate_tdm_slot_mask(slots,
|
|
&tx_mask, &rx_mask);
|
|
else
|
|
snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
|
|
|
|
dai->tx_mask = tx_mask;
|
|
dai->rx_mask = rx_mask;
|
|
|
|
if (dai->driver && dai->driver->ops->set_tdm_slot)
|
|
return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
|
|
slots, slot_width);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
if (dai->driver && dai->driver->ops->set_channel_map)
|
|
return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
|
|
rx_num, rx_slot);
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
if (dai->driver && dai->driver->ops->set_tristate)
|
|
return dai->driver->ops->set_tristate(dai, tristate);
|
|
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
|
|
* @direction: stream to mute
|
|
*
|
|
* Mutes the DAI DAC.
|
|
*/
|
|
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
|
|
int direction)
|
|
{
|
|
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)
|
|
return dai->driver->ops->digital_mute(dai, mute);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_card - Register a card with the ASoC core
|
|
*
|
|
* @card: Card to register
|
|
*
|
|
*/
|
|
int snd_soc_register_card(struct snd_soc_card *card)
|
|
{
|
|
int i, j, ret;
|
|
|
|
if (!card->name || !card->dev)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < card->num_links; i++) {
|
|
struct snd_soc_dai_link *link = &card->dai_link[i];
|
|
|
|
ret = snd_soc_init_multicodec(card, link);
|
|
if (ret) {
|
|
dev_err(card->dev, "ASoC: failed to init multicodec\n");
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
dev_err(card->dev,
|
|
"ASoC: Both platform name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
dev_err(card->dev,
|
|
"ASoC: Neither/both cpu name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
/*
|
|
* At least one of CPU DAI name or CPU device name/node must be
|
|
* specified
|
|
*/
|
|
if (!link->cpu_dai_name &&
|
|
!(link->cpu_name || link->cpu_of_node)) {
|
|
dev_err(card->dev,
|
|
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
|
|
link->name);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
dev_set_drvdata(card->dev, card);
|
|
|
|
snd_soc_initialize_card_lists(card);
|
|
|
|
card->rtd = devm_kzalloc(card->dev,
|
|
sizeof(struct snd_soc_pcm_runtime) *
|
|
(card->num_links + card->num_aux_devs),
|
|
GFP_KERNEL);
|
|
if (card->rtd == NULL)
|
|
return -ENOMEM;
|
|
card->num_rtd = 0;
|
|
card->rtd_aux = &card->rtd[card->num_links];
|
|
|
|
for (i = 0; i < card->num_links; i++) {
|
|
card->rtd[i].card = card;
|
|
card->rtd[i].dai_link = &card->dai_link[i];
|
|
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;
|
|
}
|
|
|
|
for (i = 0; i < card->num_aux_devs; i++)
|
|
card->rtd_aux[i].card = card;
|
|
|
|
INIT_LIST_HEAD(&card->dapm_dirty);
|
|
INIT_LIST_HEAD(&card->dobj_list);
|
|
card->instantiated = 0;
|
|
mutex_init(&card->mutex);
|
|
mutex_init(&card->dapm_mutex);
|
|
|
|
ret = snd_soc_instantiate_card(card);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* deactivate pins to sleep state */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
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);
|
|
}
|
|
|
|
if (!cpu_dai->active)
|
|
pinctrl_pm_select_sleep_state(cpu_dai->dev);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_card);
|
|
|
|
/**
|
|
* snd_soc_unregister_card - Unregister a card with the ASoC core
|
|
*
|
|
* @card: Card to unregister
|
|
*
|
|
*/
|
|
int snd_soc_unregister_card(struct snd_soc_card *card)
|
|
{
|
|
if (card->instantiated) {
|
|
card->instantiated = false;
|
|
snd_soc_dapm_shutdown(card);
|
|
soc_cleanup_card_resources(card);
|
|
dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
|
|
|
|
/*
|
|
* Simplify DAI link configuration by removing ".-1" from device names
|
|
* and sanitizing names.
|
|
*/
|
|
static char *fmt_single_name(struct device *dev, int *id)
|
|
{
|
|
char *found, name[NAME_SIZE];
|
|
int id1, id2;
|
|
|
|
if (dev_name(dev) == NULL)
|
|
return NULL;
|
|
|
|
strlcpy(name, dev_name(dev), NAME_SIZE);
|
|
|
|
/* 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 */
|
|
*id = ((id1 & 0xffff) << 16) + id2;
|
|
|
|
/* sanitize component name for DAI link creation */
|
|
snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
|
|
strlcpy(name, tmp, NAME_SIZE);
|
|
} 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) {
|
|
dev_err(dev,
|
|
"ASoC: error - multiple DAI %s registered with no name\n",
|
|
dev_name(dev));
|
|
return NULL;
|
|
}
|
|
|
|
return kstrdup(dai_drv->name, GFP_KERNEL);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_unregister_dai - Unregister DAIs from the ASoC core
|
|
*
|
|
* @component: The component for which the DAIs should be unregistered
|
|
*/
|
|
static void snd_soc_unregister_dais(struct snd_soc_component *component)
|
|
{
|
|
struct snd_soc_dai *dai, *_dai;
|
|
|
|
list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
|
|
dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
|
|
dai->name);
|
|
list_del(&dai->list);
|
|
kfree(dai->name);
|
|
kfree(dai);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_dais - Register a DAI with the ASoC core
|
|
*
|
|
* @component: The component the DAIs are registered for
|
|
* @dai_drv: DAI driver to use for the DAIs
|
|
* @count: Number of DAIs
|
|
* @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
|
|
* parent's name.
|
|
*/
|
|
static int snd_soc_register_dais(struct snd_soc_component *component,
|
|
struct snd_soc_dai_driver *dai_drv, size_t count,
|
|
bool legacy_dai_naming)
|
|
{
|
|
struct device *dev = component->dev;
|
|
struct snd_soc_dai *dai;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
|
|
|
|
component->dai_drv = dai_drv;
|
|
component->num_dai = count;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
|
|
if (dai == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* 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_drv[i].id == 0 || dai_drv[i].name == NULL)) {
|
|
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;
|
|
}
|
|
if (dai->name == NULL) {
|
|
kfree(dai);
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
dai->component = component;
|
|
dai->dev = dev;
|
|
dai->driver = &dai_drv[i];
|
|
if (!dai->driver->ops)
|
|
dai->driver->ops = &null_dai_ops;
|
|
|
|
list_add(&dai->list, &component->dai_list);
|
|
|
|
dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
snd_soc_unregister_dais(component);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
|
|
enum snd_soc_dapm_type type, int subseq)
|
|
{
|
|
struct snd_soc_component *component = dapm->component;
|
|
|
|
component->driver->seq_notifier(component, type, subseq);
|
|
}
|
|
|
|
static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
|
|
int event)
|
|
{
|
|
struct snd_soc_component *component = dapm->component;
|
|
|
|
return component->driver->stream_event(component, event);
|
|
}
|
|
|
|
static int snd_soc_component_initialize(struct snd_soc_component *component,
|
|
const struct snd_soc_component_driver *driver, struct device *dev)
|
|
{
|
|
struct snd_soc_dapm_context *dapm;
|
|
|
|
component->name = fmt_single_name(dev, &component->id);
|
|
if (!component->name) {
|
|
dev_err(dev, "ASoC: Failed to allocate name\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
component->dev = dev;
|
|
component->driver = driver;
|
|
component->probe = component->driver->probe;
|
|
component->remove = component->driver->remove;
|
|
|
|
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;
|
|
dapm->idle_bias_off = true;
|
|
if (driver->seq_notifier)
|
|
dapm->seq_notifier = snd_soc_component_seq_notifier;
|
|
if (driver->stream_event)
|
|
dapm->stream_event = snd_soc_component_stream_event;
|
|
|
|
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;
|
|
|
|
INIT_LIST_HEAD(&component->dai_list);
|
|
mutex_init(&component->io_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
|
|
{
|
|
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;
|
|
}
|
|
|
|
#ifdef CONFIG_REGMAP
|
|
|
|
/**
|
|
* snd_soc_component_init_regmap() - Initialize regmap instance for the component
|
|
* @component: The component for which to initialize the regmap instance
|
|
* @regmap: The regmap instance that should be used by the component
|
|
*
|
|
* This function allows deferred assignment of the regmap instance that is
|
|
* associated with the component. Only use this if the regmap instance is not
|
|
* yet ready when the component is registered. The function must also be called
|
|
* before the first IO attempt of the component.
|
|
*/
|
|
void snd_soc_component_init_regmap(struct snd_soc_component *component,
|
|
struct regmap *regmap)
|
|
{
|
|
component->regmap = regmap;
|
|
snd_soc_component_setup_regmap(component);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
|
|
|
|
/**
|
|
* snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
|
|
* @component: The component for which to de-initialize the regmap instance
|
|
*
|
|
* Calls regmap_exit() on the regmap instance associated to the component and
|
|
* removes the regmap instance from the component.
|
|
*
|
|
* This function should only be used if snd_soc_component_init_regmap() was used
|
|
* to initialize the regmap instance.
|
|
*/
|
|
void snd_soc_component_exit_regmap(struct snd_soc_component *component)
|
|
{
|
|
regmap_exit(component->regmap);
|
|
component->regmap = NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
|
|
|
|
#endif
|
|
|
|
static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
|
|
{
|
|
if (!component->write && !component->read) {
|
|
if (!component->regmap)
|
|
component->regmap = dev_get_regmap(component->dev, NULL);
|
|
if (component->regmap)
|
|
snd_soc_component_setup_regmap(component);
|
|
}
|
|
|
|
list_add(&component->list, &component_list);
|
|
INIT_LIST_HEAD(&component->dobj_list);
|
|
}
|
|
|
|
static void snd_soc_component_add(struct snd_soc_component *component)
|
|
{
|
|
mutex_lock(&client_mutex);
|
|
snd_soc_component_add_unlocked(component);
|
|
mutex_unlock(&client_mutex);
|
|
}
|
|
|
|
static void snd_soc_component_cleanup(struct snd_soc_component *component)
|
|
{
|
|
snd_soc_unregister_dais(component);
|
|
kfree(component->name);
|
|
}
|
|
|
|
static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
|
|
{
|
|
list_del(&component->list);
|
|
}
|
|
|
|
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;
|
|
int ret;
|
|
|
|
cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
|
|
if (!cmpnt) {
|
|
dev_err(dev, "ASoC: Failed to allocate memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
cmpnt->ignore_pmdown_time = true;
|
|
cmpnt->registered_as_component = true;
|
|
|
|
ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
|
|
if (ret < 0) {
|
|
dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
|
|
goto err_cleanup;
|
|
}
|
|
|
|
snd_soc_component_add(cmpnt);
|
|
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
snd_soc_component_cleanup(cmpnt);
|
|
err_free:
|
|
kfree(cmpnt);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_component);
|
|
|
|
/**
|
|
* snd_soc_unregister_component - Unregister a component from the ASoC core
|
|
*
|
|
*/
|
|
void snd_soc_unregister_component(struct device *dev)
|
|
{
|
|
struct snd_soc_component *cmpnt;
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_for_each_entry(cmpnt, &component_list, list) {
|
|
if (dev == cmpnt->dev && cmpnt->registered_as_component)
|
|
goto found;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
return;
|
|
|
|
found:
|
|
snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL);
|
|
snd_soc_component_del_unlocked(cmpnt);
|
|
mutex_unlock(&client_mutex);
|
|
snd_soc_component_cleanup(cmpnt);
|
|
kfree(cmpnt);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
|
|
const struct snd_soc_platform_driver *platform_drv)
|
|
{
|
|
int ret;
|
|
|
|
ret = snd_soc_component_initialize(&platform->component,
|
|
&platform_drv->component_driver, dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
platform->dev = dev;
|
|
platform->driver = platform_drv;
|
|
|
|
if (platform_drv->probe)
|
|
platform->component.probe = snd_soc_platform_drv_probe;
|
|
if (platform_drv->remove)
|
|
platform->component.remove = snd_soc_platform_drv_remove;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
platform->component.debugfs_prefix = "platform";
|
|
#endif
|
|
|
|
mutex_lock(&client_mutex);
|
|
snd_soc_component_add_unlocked(&platform->component);
|
|
list_add(&platform->list, &platform_list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dev, "ASoC: Registered platform '%s'\n",
|
|
platform->component.name);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_add_platform);
|
|
|
|
/**
|
|
* snd_soc_register_platform - Register a platform with the ASoC core
|
|
*
|
|
* @platform: platform to register
|
|
*/
|
|
int snd_soc_register_platform(struct device *dev,
|
|
const struct snd_soc_platform_driver *platform_drv)
|
|
{
|
|
struct snd_soc_platform *platform;
|
|
int ret;
|
|
|
|
dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
|
|
|
|
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)
|
|
{
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_del(&platform->list);
|
|
snd_soc_component_del_unlocked(&platform->component);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
|
|
platform->component.name);
|
|
|
|
snd_soc_component_cleanup(&platform->component);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
|
|
|
|
struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
|
|
{
|
|
struct snd_soc_platform *platform;
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_for_each_entry(platform, &platform_list, list) {
|
|
if (dev == platform->dev) {
|
|
mutex_unlock(&client_mutex);
|
|
return platform;
|
|
}
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
|
|
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);
|
|
kfree(platform);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
|
|
|
|
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];
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_codec - Register a codec with the ASoC core
|
|
*
|
|
* @codec: codec to register
|
|
*/
|
|
int snd_soc_register_codec(struct device *dev,
|
|
const struct snd_soc_codec_driver *codec_drv,
|
|
struct snd_soc_dai_driver *dai_drv,
|
|
int num_dai)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
struct snd_soc_dai *dai;
|
|
int ret, i;
|
|
|
|
dev_dbg(dev, "codec register %s\n", dev_name(dev));
|
|
|
|
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
|
|
if (codec == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec->component.dapm_ptr = &codec->dapm;
|
|
codec->component.codec = codec;
|
|
|
|
ret = snd_soc_component_initialize(&codec->component,
|
|
&codec_drv->component_driver, dev);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
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;
|
|
if (codec_drv->write)
|
|
codec->component.write = snd_soc_codec_drv_write;
|
|
if (codec_drv->read)
|
|
codec->component.read = snd_soc_codec_drv_read;
|
|
codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
|
|
codec->dapm.idle_bias_off = codec_drv->idle_bias_off;
|
|
codec->dapm.suspend_bias_off = codec_drv->suspend_bias_off;
|
|
if (codec_drv->seq_notifier)
|
|
codec->dapm.seq_notifier = codec_drv->seq_notifier;
|
|
if (codec_drv->set_bias_level)
|
|
codec->dapm.set_bias_level = snd_soc_codec_set_bias_level;
|
|
codec->dev = dev;
|
|
codec->driver = codec_drv;
|
|
codec->component.val_bytes = codec_drv->reg_word_size;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
codec->component.init_debugfs = soc_init_codec_debugfs;
|
|
codec->component.debugfs_prefix = "codec";
|
|
#endif
|
|
|
|
if (codec_drv->get_regmap)
|
|
codec->component.regmap = codec_drv->get_regmap(dev);
|
|
|
|
for (i = 0; i < num_dai; i++) {
|
|
fixup_codec_formats(&dai_drv[i].playback);
|
|
fixup_codec_formats(&dai_drv[i].capture);
|
|
}
|
|
|
|
ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
|
|
if (ret < 0) {
|
|
dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
|
|
goto err_cleanup;
|
|
}
|
|
|
|
list_for_each_entry(dai, &codec->component.dai_list, list)
|
|
dai->codec = codec;
|
|
|
|
mutex_lock(&client_mutex);
|
|
snd_soc_component_add_unlocked(&codec->component);
|
|
list_add(&codec->list, &codec_list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
|
|
codec->component.name);
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
snd_soc_component_cleanup(&codec->component);
|
|
err_free:
|
|
kfree(codec);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_register_codec);
|
|
|
|
/**
|
|
* snd_soc_unregister_codec - Unregister a codec from the ASoC core
|
|
*
|
|
* @codec: codec to unregister
|
|
*/
|
|
void snd_soc_unregister_codec(struct device *dev)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (dev == codec->dev)
|
|
goto found;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
return;
|
|
|
|
found:
|
|
list_del(&codec->list);
|
|
snd_soc_component_del_unlocked(&codec->component);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
|
|
codec->component.name);
|
|
|
|
snd_soc_component_cleanup(&codec->component);
|
|
snd_soc_cache_exit(codec);
|
|
kfree(codec);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
|
|
|
|
/* Retrieve a card's name from device tree */
|
|
int snd_soc_of_parse_card_name(struct snd_soc_card *card,
|
|
const char *propname)
|
|
{
|
|
struct device_node *np;
|
|
int ret;
|
|
|
|
if (!card->dev) {
|
|
pr_err("card->dev is not set before calling %s\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
np = card->dev->of_node;
|
|
|
|
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,
|
|
"ASoC: Property '%s' could not be read: %d\n",
|
|
propname, ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
|
|
|
|
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->of_dapm_widgets = widgets;
|
|
card->num_of_dapm_widgets = num_widgets;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
|
|
|
|
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);
|
|
|
|
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);
|
|
if (num_routes < 0 || num_routes & 1) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' does not exist or its length is not even\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
num_routes /= 2;
|
|
if (!num_routes) {
|
|
dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
|
|
propname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
|
|
GFP_KERNEL);
|
|
if (!routes) {
|
|
dev_err(card->dev,
|
|
"ASoC: Could not allocate DAPM route table\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < num_routes; i++) {
|
|
ret = of_property_read_string_index(np, propname,
|
|
2 * i, &routes[i].sink);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d could not be read: %d\n",
|
|
propname, 2 * i, ret);
|
|
return -EINVAL;
|
|
}
|
|
ret = of_property_read_string_index(np, propname,
|
|
(2 * i) + 1, &routes[i].source);
|
|
if (ret) {
|
|
dev_err(card->dev,
|
|
"ASoC: Property '%s' index %d could not be read: %d\n",
|
|
propname, (2 * i) + 1, ret);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
card->num_of_dapm_routes = num_routes;
|
|
card->of_dapm_routes = routes;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
|
|
|
|
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
|
|
const char *prefix,
|
|
struct device_node **bitclkmaster,
|
|
struct device_node **framemaster)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* check "[prefix]continuous-clock"
|
|
* SND_SOC_DAIFMT_CLOCK_MASK area
|
|
*/
|
|
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;
|
|
|
|
/*
|
|
* 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);
|
|
if (bit && bitclkmaster)
|
|
*bitclkmaster = of_parse_phandle(np, prop, 0);
|
|
|
|
snprintf(prop, sizeof(prop), "%sframe-master", prefix);
|
|
frame = !!of_get_property(np, prop, NULL);
|
|
if (frame && framemaster)
|
|
*framemaster = of_parse_phandle(np, prop, 0);
|
|
|
|
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);
|
|
|
|
static int snd_soc_get_dai_name(struct of_phandle_args *args,
|
|
const char **dai_name)
|
|
{
|
|
struct snd_soc_component *pos;
|
|
struct device_node *component_of_node;
|
|
int ret = -EPROBE_DEFER;
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_for_each_entry(pos, &component_list, list) {
|
|
component_of_node = pos->dev->of_node;
|
|
if (!component_of_node && pos->dev->parent)
|
|
component_of_node = pos->dev->parent->of_node;
|
|
|
|
if (component_of_node != args->np)
|
|
continue;
|
|
|
|
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;
|
|
continue;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
*dai_name = pos->dai_drv[id].name;
|
|
if (!*dai_name)
|
|
*dai_name = pos->name;
|
|
}
|
|
|
|
break;
|
|
}
|
|
mutex_unlock(&client_mutex);
|
|
return ret;
|
|
}
|
|
|
|
int snd_soc_of_get_dai_name(struct device_node *of_node,
|
|
const char **dai_name)
|
|
{
|
|
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 = snd_soc_get_dai_name(&args, dai_name);
|
|
|
|
of_node_put(args.np);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
|
|
|
|
/*
|
|
* snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
|
|
* @dev: Card device
|
|
* @of_node: Device node
|
|
* @dai_link: DAI link
|
|
*
|
|
* Builds an array of CODEC DAI components from the DAI link property
|
|
* 'sound-dai'.
|
|
* The array is set in the DAI link and the number of DAIs is set accordingly.
|
|
* The device nodes in the array (of_node) must be dereferenced by the caller.
|
|
*
|
|
* Returns 0 for success
|
|
*/
|
|
int snd_soc_of_get_dai_link_codecs(struct device *dev,
|
|
struct device_node *of_node,
|
|
struct snd_soc_dai_link *dai_link)
|
|
{
|
|
struct of_phandle_args args;
|
|
struct snd_soc_dai_link_component *component;
|
|
char *name;
|
|
int index, num_codecs, ret;
|
|
|
|
/* Count the number of CODECs */
|
|
name = "sound-dai";
|
|
num_codecs = of_count_phandle_with_args(of_node, name,
|
|
"#sound-dai-cells");
|
|
if (num_codecs <= 0) {
|
|
if (num_codecs == -ENOENT)
|
|
dev_err(dev, "No 'sound-dai' property\n");
|
|
else
|
|
dev_err(dev, "Bad phandle in 'sound-dai'\n");
|
|
return num_codecs;
|
|
}
|
|
component = devm_kzalloc(dev,
|
|
sizeof *component * num_codecs,
|
|
GFP_KERNEL);
|
|
if (!component)
|
|
return -ENOMEM;
|
|
dai_link->codecs = component;
|
|
dai_link->num_codecs = num_codecs;
|
|
|
|
/* Parse the list */
|
|
for (index = 0, component = dai_link->codecs;
|
|
index < dai_link->num_codecs;
|
|
index++, component++) {
|
|
ret = of_parse_phandle_with_args(of_node, name,
|
|
"#sound-dai-cells",
|
|
index, &args);
|
|
if (ret)
|
|
goto err;
|
|
component->of_node = args.np;
|
|
ret = snd_soc_get_dai_name(&args, &component->dai_name);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
return 0;
|
|
err:
|
|
for (index = 0, component = dai_link->codecs;
|
|
index < dai_link->num_codecs;
|
|
index++, component++) {
|
|
if (!component->of_node)
|
|
break;
|
|
of_node_put(component->of_node);
|
|
component->of_node = NULL;
|
|
}
|
|
dai_link->codecs = NULL;
|
|
dai_link->num_codecs = 0;
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
|
|
|
|
static int __init snd_soc_init(void)
|
|
{
|
|
snd_soc_debugfs_init();
|
|
snd_soc_util_init();
|
|
|
|
return platform_driver_register(&soc_driver);
|
|
}
|
|
module_init(snd_soc_init);
|
|
|
|
static void __exit snd_soc_exit(void)
|
|
{
|
|
snd_soc_util_exit();
|
|
snd_soc_debugfs_exit();
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
#endif
|
|
platform_driver_unregister(&soc_driver);
|
|
}
|
|
module_exit(snd_soc_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("ALSA SoC Core");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:soc-audio");
|