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![Dan Carpenter](/assets/img/avatar_default.png)
There are three callers for this function, and none of them want it to free platform for them. It leads to a double free. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@linaro.org>
4491 lines
114 KiB
C
4491 lines
114 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/ctype.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <sound/ac97_codec.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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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/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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static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
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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(dai_list);
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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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char tmpbuf[len + 1];
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char regbuf[regsize + 1];
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/* since tmpbuf is allocated on the stack, warn the callers if they
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* try to abuse this function */
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WARN_ON(len > 63);
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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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ret = snd_soc_read(codec, reg);
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if (ret < 0) {
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memset(regbuf, 'X', regsize);
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regbuf[regsize] = '\0';
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} else {
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snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
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}
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/* prepare the buffer */
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snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
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/* copy it back to the caller without the '\0' */
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memcpy(buf, tmpbuf, len);
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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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if (!snd_soc_codec_readable_register(codec, i))
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continue;
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if (codec->driver->display_register) {
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count += codec->driver->display_register(codec, buf + count,
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PAGE_SIZE - count, i);
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} else {
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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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}
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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 = strict_strtol(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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#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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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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if (strict_strtoul(start, 16, &value))
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return -EINVAL;
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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_codec_debugfs(struct snd_soc_codec *codec)
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{
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struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
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codec->debugfs_codec_root = debugfs_create_dir(codec->name,
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debugfs_card_root);
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if (!codec->debugfs_codec_root) {
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dev_warn(codec->dev,
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"ASoC: Failed to create codec debugfs directory\n");
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return;
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}
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debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
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&codec->cache_sync);
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debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
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&codec->cache_only);
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codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
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codec->debugfs_codec_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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snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
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}
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static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
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{
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debugfs_remove_recursive(codec->debugfs_codec_root);
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}
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static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
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{
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struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
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platform->debugfs_platform_root = debugfs_create_dir(platform->name,
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debugfs_card_root);
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if (!platform->debugfs_platform_root) {
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dev_warn(platform->dev,
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"ASoC: Failed to create platform debugfs directory\n");
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return;
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}
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snd_soc_dapm_debugfs_init(&platform->dapm,
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platform->debugfs_platform_root);
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}
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static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
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{
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debugfs_remove_recursive(platform->debugfs_platform_root);
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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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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->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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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_dai *dai;
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if (!buf)
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return -ENOMEM;
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list_for_each_entry(dai, &dai_list, list) {
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len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", 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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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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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->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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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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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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|
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#else
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static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
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{
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}
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static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
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{
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}
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static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
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{
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}
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static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
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{
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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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|
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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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#endif
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|
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struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
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const char *dai_link, int stream)
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{
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int i;
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|
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for (i = 0; i < card->num_links; i++) {
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if (card->rtd[i].dai_link->no_pcm &&
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!strcmp(card->rtd[i].dai_link->name, dai_link))
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return card->rtd[i].pcm->streams[stream].substream;
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}
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dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
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return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
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|
|
struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
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const char *dai_link)
|
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{
|
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int i;
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|
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for (i = 0; i < card->num_links; i++) {
|
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if (!strcmp(card->rtd[i].dai_link->name, dai_link))
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return &card->rtd[i];
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}
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dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
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return NULL;
|
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}
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EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
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|
|
#ifdef CONFIG_SND_SOC_AC97_BUS
|
|
/* unregister ac97 codec */
|
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static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
|
|
{
|
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if (codec->ac97->dev.bus)
|
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device_unregister(&codec->ac97->dev);
|
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return 0;
|
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}
|
|
|
|
/* stop no dev release warning */
|
|
static void soc_ac97_device_release(struct device *dev){}
|
|
|
|
/* register ac97 codec to bus */
|
|
static int soc_ac97_dev_register(struct snd_soc_codec *codec)
|
|
{
|
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int err;
|
|
|
|
codec->ac97->dev.bus = &ac97_bus_type;
|
|
codec->ac97->dev.parent = codec->card->dev;
|
|
codec->ac97->dev.release = soc_ac97_device_release;
|
|
|
|
dev_set_name(&codec->ac97->dev, "%d-%d:%s",
|
|
codec->card->snd_card->number, 0, codec->name);
|
|
err = device_register(&codec->ac97->dev);
|
|
if (err < 0) {
|
|
dev_err(codec->dev, "ASoC: Can't register ac97 bus\n");
|
|
codec->ac97->dev.bus = NULL;
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#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;
|
|
|
|
/* If the initialization of this soc device failed, there is no codec
|
|
* associated with it. Just bail out in this case.
|
|
*/
|
|
if (list_empty(&card->codec_dev_list))
|
|
return 0;
|
|
|
|
/* 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++) {
|
|
struct snd_soc_dai *dai = card->rtd[i].codec_dai;
|
|
struct snd_soc_dai_driver *drv = dai->driver;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
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;
|
|
struct snd_soc_platform *platform = card->rtd[i].platform;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
|
|
cpu_dai->driver->suspend(cpu_dai);
|
|
if (platform->driver->suspend && !platform->suspended) {
|
|
platform->driver->suspend(cpu_dai);
|
|
platform->suspended = 1;
|
|
}
|
|
}
|
|
|
|
/* close any waiting streams and save state */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
flush_delayed_work(&card->rtd[i].delayed_work);
|
|
card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
|
|
}
|
|
|
|
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 analogue paths too */
|
|
dapm_mark_io_dirty(&card->dapm);
|
|
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 && codec->driver->suspend) {
|
|
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:
|
|
codec->driver->suspend(codec);
|
|
codec->suspended = 1;
|
|
codec->cache_sync = 1;
|
|
if (codec->using_regmap)
|
|
regcache_mark_dirty(codec->control_data);
|
|
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->ac97_control)
|
|
cpu_dai->driver->suspend(cpu_dai);
|
|
}
|
|
|
|
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;
|
|
|
|
/* 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 AC97 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->ac97_control)
|
|
cpu_dai->driver->resume(cpu_dai);
|
|
}
|
|
|
|
list_for_each_entry(codec, &card->codec_dev_list, card_list) {
|
|
/* If the CODEC was idle over suspend then it will have been
|
|
* left with bias OFF or STANDBY and suspended so we must now
|
|
* resume. Otherwise the suspend was suppressed.
|
|
*/
|
|
if (codec->driver->resume && codec->suspended) {
|
|
switch (codec->dapm.bias_level) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
case SND_SOC_BIAS_OFF:
|
|
codec->driver->resume(codec);
|
|
codec->suspended = 0;
|
|
break;
|
|
default:
|
|
dev_dbg(codec->dev,
|
|
"ASoC: CODEC was on over suspend\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
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++) {
|
|
struct snd_soc_dai *dai = card->rtd[i].codec_dai;
|
|
struct snd_soc_dai_driver *drv = dai->driver;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
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;
|
|
struct snd_soc_platform *platform = card->rtd[i].platform;
|
|
|
|
if (card->rtd[i].dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
|
|
cpu_dai->driver->resume(cpu_dai);
|
|
if (platform->driver->resume && platform->suspended) {
|
|
platform->driver->resume(cpu_dai);
|
|
platform->suspended = 0;
|
|
}
|
|
}
|
|
|
|
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 analogue paths too */
|
|
dapm_mark_io_dirty(&card->dapm);
|
|
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);
|
|
int i, ac97_control = 0;
|
|
|
|
/* If the initialization of this soc device failed, there is no codec
|
|
* associated with it. Just bail out in this case.
|
|
*/
|
|
if (list_empty(&card->codec_dev_list))
|
|
return 0;
|
|
|
|
/* AC97 devices might have other drivers hanging off them so
|
|
* need to resume immediately. Other drivers don't have that
|
|
* problem and may take a substantial amount of time to resume
|
|
* due to I/O costs and anti-pop so handle them out of line.
|
|
*/
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
|
|
ac97_control |= cpu_dai->driver->ac97_control;
|
|
}
|
|
if (ac97_control) {
|
|
dev_dbg(dev, "ASoC: Resuming AC97 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 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_codec *codec;
|
|
struct snd_soc_platform *platform;
|
|
struct snd_soc_dai *codec_dai, *cpu_dai;
|
|
const char *platform_name;
|
|
|
|
dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
|
|
|
|
/* Find CPU DAI from registered DAIs*/
|
|
list_for_each_entry(cpu_dai, &dai_list, list) {
|
|
if (dai_link->cpu_of_node &&
|
|
(cpu_dai->dev->of_node != dai_link->cpu_of_node))
|
|
continue;
|
|
if (dai_link->cpu_name &&
|
|
strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
|
|
continue;
|
|
if (dai_link->cpu_dai_name &&
|
|
strcmp(cpu_dai->name, dai_link->cpu_dai_name))
|
|
continue;
|
|
|
|
rtd->cpu_dai = cpu_dai;
|
|
}
|
|
|
|
if (!rtd->cpu_dai) {
|
|
dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
|
|
dai_link->cpu_dai_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
/* Find CODEC from registered CODECs */
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (dai_link->codec_of_node) {
|
|
if (codec->dev->of_node != dai_link->codec_of_node)
|
|
continue;
|
|
} else {
|
|
if (strcmp(codec->name, dai_link->codec_name))
|
|
continue;
|
|
}
|
|
|
|
rtd->codec = codec;
|
|
|
|
/*
|
|
* CODEC found, so find CODEC DAI from registered DAIs from
|
|
* this CODEC
|
|
*/
|
|
list_for_each_entry(codec_dai, &dai_list, list) {
|
|
if (codec->dev == codec_dai->dev &&
|
|
!strcmp(codec_dai->name,
|
|
dai_link->codec_dai_name)) {
|
|
|
|
rtd->codec_dai = codec_dai;
|
|
}
|
|
}
|
|
|
|
if (!rtd->codec_dai) {
|
|
dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
|
|
dai_link->codec_dai_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
}
|
|
|
|
if (!rtd->codec) {
|
|
dev_err(card->dev, "ASoC: CODEC %s not registered\n",
|
|
dai_link->codec_name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
/* 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->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 int soc_remove_platform(struct snd_soc_platform *platform)
|
|
{
|
|
int ret;
|
|
|
|
if (platform->driver->remove) {
|
|
ret = platform->driver->remove(platform);
|
|
if (ret < 0)
|
|
dev_err(platform->dev, "ASoC: failed to remove %d\n",
|
|
ret);
|
|
}
|
|
|
|
/* Make sure all DAPM widgets are freed */
|
|
snd_soc_dapm_free(&platform->dapm);
|
|
|
|
soc_cleanup_platform_debugfs(platform);
|
|
platform->probed = 0;
|
|
list_del(&platform->card_list);
|
|
module_put(platform->dev->driver->owner);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void soc_remove_codec(struct snd_soc_codec *codec)
|
|
{
|
|
int err;
|
|
|
|
if (codec->driver->remove) {
|
|
err = codec->driver->remove(codec);
|
|
if (err < 0)
|
|
dev_err(codec->dev, "ASoC: failed to remove %d\n", err);
|
|
}
|
|
|
|
/* Make sure all DAPM widgets are freed */
|
|
snd_soc_dapm_free(&codec->dapm);
|
|
|
|
soc_cleanup_codec_debugfs(codec);
|
|
codec->probed = 0;
|
|
list_del(&codec->card_list);
|
|
module_put(codec->dev->driver->owner);
|
|
}
|
|
|
|
static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
|
|
int err;
|
|
|
|
/* unregister the rtd device */
|
|
if (rtd->dev_registered) {
|
|
device_remove_file(rtd->dev, &dev_attr_pmdown_time);
|
|
device_remove_file(rtd->dev, &dev_attr_codec_reg);
|
|
device_unregister(rtd->dev);
|
|
rtd->dev_registered = 0;
|
|
}
|
|
|
|
/* remove the CODEC DAI */
|
|
if (codec_dai && codec_dai->probed &&
|
|
codec_dai->driver->remove_order == order) {
|
|
if (codec_dai->driver->remove) {
|
|
err = codec_dai->driver->remove(codec_dai);
|
|
if (err < 0)
|
|
dev_err(codec_dai->dev,
|
|
"ASoC: failed to remove %s: %d\n",
|
|
codec_dai->name, err);
|
|
}
|
|
codec_dai->probed = 0;
|
|
list_del(&codec_dai->card_list);
|
|
}
|
|
|
|
/* remove the cpu_dai */
|
|
if (cpu_dai && cpu_dai->probed &&
|
|
cpu_dai->driver->remove_order == order) {
|
|
if (cpu_dai->driver->remove) {
|
|
err = cpu_dai->driver->remove(cpu_dai);
|
|
if (err < 0)
|
|
dev_err(cpu_dai->dev,
|
|
"ASoC: failed to remove %s: %d\n",
|
|
cpu_dai->name, err);
|
|
}
|
|
cpu_dai->probed = 0;
|
|
list_del(&cpu_dai->card_list);
|
|
|
|
if (!cpu_dai->codec) {
|
|
snd_soc_dapm_free(&cpu_dai->dapm);
|
|
module_put(cpu_dai->dev->driver->owner);
|
|
}
|
|
}
|
|
}
|
|
|
|
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_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_platform *platform = rtd->platform;
|
|
struct snd_soc_codec *codec;
|
|
|
|
/* remove the platform */
|
|
if (platform && platform->probed &&
|
|
platform->driver->remove_order == order) {
|
|
soc_remove_platform(platform);
|
|
}
|
|
|
|
/* remove the CODEC-side CODEC */
|
|
if (codec_dai) {
|
|
codec = codec_dai->codec;
|
|
if (codec && codec->probed &&
|
|
codec->driver->remove_order == order)
|
|
soc_remove_codec(codec);
|
|
}
|
|
|
|
/* remove any CPU-side CODEC */
|
|
if (cpu_dai) {
|
|
codec = cpu_dai->codec;
|
|
if (codec && codec->probed &&
|
|
codec->driver->remove_order == order)
|
|
soc_remove_codec(codec);
|
|
}
|
|
}
|
|
|
|
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_codec *codec)
|
|
{
|
|
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->dev_name && !strcmp(codec->name, map->dev_name)) {
|
|
codec->name_prefix = map->name_prefix;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int soc_probe_codec(struct snd_soc_card *card,
|
|
struct snd_soc_codec *codec)
|
|
{
|
|
int ret = 0;
|
|
const struct snd_soc_codec_driver *driver = codec->driver;
|
|
struct snd_soc_dai *dai;
|
|
|
|
codec->card = card;
|
|
codec->dapm.card = card;
|
|
soc_set_name_prefix(card, codec);
|
|
|
|
if (!try_module_get(codec->dev->driver->owner))
|
|
return -ENODEV;
|
|
|
|
soc_init_codec_debugfs(codec);
|
|
|
|
if (driver->dapm_widgets)
|
|
snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
|
|
driver->num_dapm_widgets);
|
|
|
|
/* Create DAPM widgets for each DAI stream */
|
|
list_for_each_entry(dai, &dai_list, list) {
|
|
if (dai->dev != codec->dev)
|
|
continue;
|
|
|
|
snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
|
|
}
|
|
|
|
codec->dapm.idle_bias_off = driver->idle_bias_off;
|
|
|
|
if (driver->probe) {
|
|
ret = driver->probe(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev,
|
|
"ASoC: failed to probe CODEC %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
WARN(codec->dapm.idle_bias_off &&
|
|
codec->dapm.bias_level != SND_SOC_BIAS_OFF,
|
|
"codec %s can not start from non-off bias with idle_bias_off==1\n",
|
|
codec->name);
|
|
}
|
|
|
|
/* If the driver didn't set I/O up try regmap */
|
|
if (!codec->write && dev_get_regmap(codec->dev, NULL))
|
|
snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
|
|
|
|
if (driver->controls)
|
|
snd_soc_add_codec_controls(codec, driver->controls,
|
|
driver->num_controls);
|
|
if (driver->dapm_routes)
|
|
snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
|
|
driver->num_dapm_routes);
|
|
|
|
/* mark codec as probed and add to card codec list */
|
|
codec->probed = 1;
|
|
list_add(&codec->card_list, &card->codec_dev_list);
|
|
list_add(&codec->dapm.list, &card->dapm_list);
|
|
|
|
return 0;
|
|
|
|
err_probe:
|
|
soc_cleanup_codec_debugfs(codec);
|
|
module_put(codec->dev->driver->owner);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int soc_probe_platform(struct snd_soc_card *card,
|
|
struct snd_soc_platform *platform)
|
|
{
|
|
int ret = 0;
|
|
const struct snd_soc_platform_driver *driver = platform->driver;
|
|
struct snd_soc_dai *dai;
|
|
|
|
platform->card = card;
|
|
platform->dapm.card = card;
|
|
|
|
if (!try_module_get(platform->dev->driver->owner))
|
|
return -ENODEV;
|
|
|
|
soc_init_platform_debugfs(platform);
|
|
|
|
if (driver->dapm_widgets)
|
|
snd_soc_dapm_new_controls(&platform->dapm,
|
|
driver->dapm_widgets, driver->num_dapm_widgets);
|
|
|
|
/* Create DAPM widgets for each DAI stream */
|
|
list_for_each_entry(dai, &dai_list, list) {
|
|
if (dai->dev != platform->dev)
|
|
continue;
|
|
|
|
snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
|
|
}
|
|
|
|
platform->dapm.idle_bias_off = 1;
|
|
|
|
if (driver->probe) {
|
|
ret = driver->probe(platform);
|
|
if (ret < 0) {
|
|
dev_err(platform->dev,
|
|
"ASoC: failed to probe platform %d\n", ret);
|
|
goto err_probe;
|
|
}
|
|
}
|
|
|
|
if (driver->controls)
|
|
snd_soc_add_platform_controls(platform, driver->controls,
|
|
driver->num_controls);
|
|
if (driver->dapm_routes)
|
|
snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
|
|
driver->num_dapm_routes);
|
|
|
|
/* mark platform as probed and add to card platform list */
|
|
platform->probed = 1;
|
|
list_add(&platform->card_list, &card->platform_dev_list);
|
|
list_add(&platform->dapm.list, &card->dapm_list);
|
|
|
|
return 0;
|
|
|
|
err_probe:
|
|
soc_cleanup_platform_debugfs(platform);
|
|
module_put(platform->dev->driver->owner);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void rtd_release(struct device *dev)
|
|
{
|
|
kfree(dev);
|
|
}
|
|
|
|
static int soc_post_component_init(struct snd_soc_card *card,
|
|
struct snd_soc_codec *codec,
|
|
int num, int dailess)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = NULL;
|
|
struct snd_soc_aux_dev *aux_dev = NULL;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
const char *temp, *name;
|
|
int ret = 0;
|
|
|
|
if (!dailess) {
|
|
dai_link = &card->dai_link[num];
|
|
rtd = &card->rtd[num];
|
|
name = dai_link->name;
|
|
} else {
|
|
aux_dev = &card->aux_dev[num];
|
|
rtd = &card->rtd_aux[num];
|
|
name = aux_dev->name;
|
|
}
|
|
rtd->card = card;
|
|
|
|
/* Make sure all DAPM widgets are instantiated */
|
|
snd_soc_dapm_new_widgets(&codec->dapm);
|
|
|
|
/* machine controls, routes and widgets are not prefixed */
|
|
temp = codec->name_prefix;
|
|
codec->name_prefix = NULL;
|
|
|
|
/* do machine specific initialization */
|
|
if (!dailess && dai_link->init)
|
|
ret = dai_link->init(rtd);
|
|
else if (dailess && aux_dev->init)
|
|
ret = aux_dev->init(&codec->dapm);
|
|
if (ret < 0) {
|
|
dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
|
|
return ret;
|
|
}
|
|
codec->name_prefix = temp;
|
|
|
|
/* register the rtd device */
|
|
rtd->codec = codec;
|
|
|
|
rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
|
|
if (!rtd->dev)
|
|
return -ENOMEM;
|
|
device_initialize(rtd->dev);
|
|
rtd->dev->parent = card->dev;
|
|
rtd->dev->release = rtd_release;
|
|
rtd->dev->init_name = 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(card->dev,
|
|
"ASoC: failed to register runtime device: %d\n", ret);
|
|
return ret;
|
|
}
|
|
rtd->dev_registered = 1;
|
|
|
|
/* add DAPM sysfs entries for this codec */
|
|
ret = snd_soc_dapm_sys_add(rtd->dev);
|
|
if (ret < 0)
|
|
dev_err(codec->dev,
|
|
"ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
|
|
|
|
/* add codec sysfs entries */
|
|
ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
|
|
if (ret < 0)
|
|
dev_err(codec->dev,
|
|
"ASoC: failed to add codec sysfs files: %d\n", ret);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
/* add DPCM sysfs entries */
|
|
if (!dailess && !dai_link->dynamic)
|
|
goto out;
|
|
|
|
ret = soc_dpcm_debugfs_add(rtd);
|
|
if (ret < 0)
|
|
dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret);
|
|
|
|
out:
|
|
#endif
|
|
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_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_platform *platform = rtd->platform;
|
|
int ret;
|
|
|
|
/* probe the CPU-side component, if it is a CODEC */
|
|
if (cpu_dai->codec &&
|
|
!cpu_dai->codec->probed &&
|
|
cpu_dai->codec->driver->probe_order == order) {
|
|
ret = soc_probe_codec(card, cpu_dai->codec);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* probe the CODEC-side component */
|
|
if (!codec_dai->codec->probed &&
|
|
codec_dai->codec->driver->probe_order == order) {
|
|
ret = soc_probe_codec(card, codec_dai->codec);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* probe the platform */
|
|
if (!platform->probed &&
|
|
platform->driver->probe_order == order) {
|
|
ret = soc_probe_platform(card, platform);
|
|
if (ret < 0)
|
|
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_codec *codec = rtd->codec;
|
|
struct snd_soc_platform *platform = rtd->platform;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dapm_widget *play_w, *capture_w;
|
|
int ret;
|
|
|
|
dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
|
|
card->name, num, order);
|
|
|
|
/* config components */
|
|
cpu_dai->platform = platform;
|
|
codec_dai->card = card;
|
|
cpu_dai->card = card;
|
|
|
|
/* set default power off timeout */
|
|
rtd->pmdown_time = pmdown_time;
|
|
|
|
/* probe the cpu_dai */
|
|
if (!cpu_dai->probed &&
|
|
cpu_dai->driver->probe_order == order) {
|
|
if (!cpu_dai->codec) {
|
|
cpu_dai->dapm.card = card;
|
|
if (!try_module_get(cpu_dai->dev->driver->owner))
|
|
return -ENODEV;
|
|
|
|
list_add(&cpu_dai->dapm.list, &card->dapm_list);
|
|
snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
|
|
}
|
|
|
|
if (cpu_dai->driver->probe) {
|
|
ret = cpu_dai->driver->probe(cpu_dai);
|
|
if (ret < 0) {
|
|
dev_err(cpu_dai->dev,
|
|
"ASoC: failed to probe CPU DAI %s: %d\n",
|
|
cpu_dai->name, ret);
|
|
module_put(cpu_dai->dev->driver->owner);
|
|
return ret;
|
|
}
|
|
}
|
|
cpu_dai->probed = 1;
|
|
/* mark cpu_dai as probed and add to card dai list */
|
|
list_add(&cpu_dai->card_list, &card->dai_dev_list);
|
|
}
|
|
|
|
/* probe the CODEC DAI */
|
|
if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
|
|
if (codec_dai->driver->probe) {
|
|
ret = codec_dai->driver->probe(codec_dai);
|
|
if (ret < 0) {
|
|
dev_err(codec_dai->dev,
|
|
"ASoC: failed to probe CODEC DAI %s: %d\n",
|
|
codec_dai->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* mark codec_dai as probed and add to card dai list */
|
|
codec_dai->probed = 1;
|
|
list_add(&codec_dai->card_list, &card->dai_dev_list);
|
|
}
|
|
|
|
/* complete DAI probe during last probe */
|
|
if (order != SND_SOC_COMP_ORDER_LAST)
|
|
return 0;
|
|
|
|
ret = soc_post_component_init(card, codec, num, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
|
|
if (ret < 0)
|
|
dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n",
|
|
ret);
|
|
|
|
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 {
|
|
/* link the DAI widgets */
|
|
play_w = codec_dai->playback_widget;
|
|
capture_w = cpu_dai->capture_widget;
|
|
if (play_w && capture_w) {
|
|
ret = snd_soc_dapm_new_pcm(card, dai_link->params,
|
|
capture_w, play_w);
|
|
if (ret != 0) {
|
|
dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
|
|
play_w->name, capture_w->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
play_w = cpu_dai->playback_widget;
|
|
capture_w = codec_dai->capture_widget;
|
|
if (play_w && capture_w) {
|
|
ret = snd_soc_dapm_new_pcm(card, dai_link->params,
|
|
capture_w, play_w);
|
|
if (ret != 0) {
|
|
dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
|
|
play_w->name, capture_w->name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* add platform data for AC97 devices */
|
|
if (rtd->codec_dai->driver->ac97_control)
|
|
snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_SND_SOC_AC97_BUS
|
|
static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
int ret;
|
|
|
|
/* Only instantiate AC97 if not already done by the adaptor
|
|
* for the generic AC97 subsystem.
|
|
*/
|
|
if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
|
|
/*
|
|
* It is possible that the AC97 device is already registered to
|
|
* the device subsystem. This happens when the device is created
|
|
* via snd_ac97_mixer(). Currently only SoC codec that does so
|
|
* is the generic AC97 glue but others migh emerge.
|
|
*
|
|
* In those cases we don't try to register the device again.
|
|
*/
|
|
if (!rtd->codec->ac97_created)
|
|
return 0;
|
|
|
|
ret = soc_ac97_dev_register(rtd->codec);
|
|
if (ret < 0) {
|
|
dev_err(rtd->codec->dev,
|
|
"ASoC: AC97 device register failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
rtd->codec->ac97_registered = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
|
|
{
|
|
if (codec->ac97_registered) {
|
|
soc_ac97_dev_unregister(codec);
|
|
codec->ac97_registered = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int soc_check_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
|
|
struct snd_soc_codec *codec;
|
|
|
|
/* find CODEC from registered CODECs*/
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (!strcmp(codec->name, aux_dev->codec_name))
|
|
return 0;
|
|
}
|
|
|
|
dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
|
|
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
|
|
struct snd_soc_codec *codec;
|
|
int ret = -ENODEV;
|
|
|
|
/* find CODEC from registered CODECs*/
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (!strcmp(codec->name, aux_dev->codec_name)) {
|
|
if (codec->probed) {
|
|
dev_err(codec->dev,
|
|
"ASoC: codec already probed");
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
goto found;
|
|
}
|
|
}
|
|
/* codec not found */
|
|
dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
|
|
return -EPROBE_DEFER;
|
|
|
|
found:
|
|
ret = soc_probe_codec(card, codec);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = soc_post_component_init(card, codec, num, 1);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
|
|
struct snd_soc_codec *codec = rtd->codec;
|
|
|
|
/* unregister the rtd device */
|
|
if (rtd->dev_registered) {
|
|
device_remove_file(rtd->dev, &dev_attr_codec_reg);
|
|
device_unregister(rtd->dev);
|
|
rtd->dev_registered = 0;
|
|
}
|
|
|
|
if (codec && codec->probed)
|
|
soc_remove_codec(codec);
|
|
}
|
|
|
|
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
|
|
enum snd_soc_compress_type compress_type)
|
|
{
|
|
int ret;
|
|
|
|
if (codec->cache_init)
|
|
return 0;
|
|
|
|
/* override the compress_type if necessary */
|
|
if (compress_type && codec->compress_type != compress_type)
|
|
codec->compress_type = compress_type;
|
|
ret = snd_soc_cache_init(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev,
|
|
"ASoC: Failed to set cache compression type: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
codec->cache_init = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_soc_instantiate_card(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
struct snd_soc_codec_conf *codec_conf;
|
|
enum snd_soc_compress_type compress_type;
|
|
struct snd_soc_dai_link *dai_link;
|
|
int ret, i, order, dai_fmt;
|
|
|
|
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;
|
|
}
|
|
|
|
/* check aux_devs too */
|
|
for (i = 0; i < card->num_aux_devs; i++) {
|
|
ret = soc_check_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;
|
|
/* by default we don't override the compress_type */
|
|
compress_type = 0;
|
|
/* check to see if we need to override the compress_type */
|
|
for (i = 0; i < card->num_configs; ++i) {
|
|
codec_conf = &card->codec_conf[i];
|
|
if (!strcmp(codec->name, codec_conf->dev_name)) {
|
|
compress_type = codec_conf->compress_type;
|
|
if (compress_type && compress_type
|
|
!= codec->compress_type)
|
|
break;
|
|
}
|
|
}
|
|
ret = snd_soc_init_codec_cache(codec, compress_type);
|
|
if (ret < 0)
|
|
goto base_error;
|
|
}
|
|
|
|
/* card bind complete so register a sound card */
|
|
ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
|
|
card->owner, 0, &card->snd_card);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: can't create sound card for card %s: %d\n",
|
|
card->name, ret);
|
|
goto base_error;
|
|
}
|
|
card->snd_card->dev = card->dev;
|
|
|
|
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);
|
|
|
|
/* 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);
|
|
|
|
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);
|
|
|
|
snd_soc_dapm_new_widgets(&card->dapm);
|
|
|
|
for (i = 0; i < card->num_links; i++) {
|
|
dai_link = &card->dai_link[i];
|
|
dai_fmt = dai_link->dai_fmt;
|
|
|
|
if (dai_fmt) {
|
|
ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
|
|
dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP)
|
|
dev_warn(card->rtd[i].codec_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n",
|
|
ret);
|
|
}
|
|
|
|
/* If this is a regular CPU link there will be a platform */
|
|
if (dai_fmt &&
|
|
(dai_link->platform_name || dai_link->platform_of_node)) {
|
|
ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
|
|
dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP)
|
|
dev_warn(card->rtd[i].cpu_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n",
|
|
ret);
|
|
} else if (dai_fmt) {
|
|
/* Flip the polarity for the "CPU" end */
|
|
dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
|
|
switch (dai_link->dai_fmt &
|
|
SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
|
dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
|
|
break;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
|
|
dai_fmt);
|
|
if (ret != 0 && ret != -ENOTSUPP)
|
|
dev_warn(card->rtd[i].cpu_dai->dev,
|
|
"ASoC: Failed to set DAI format: %d\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
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->dapm);
|
|
|
|
if (card->fully_routed)
|
|
list_for_each_entry(codec, &card->codec_dev_list, card_list)
|
|
snd_soc_dapm_auto_nc_codec_pins(codec);
|
|
|
|
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;
|
|
}
|
|
|
|
#ifdef CONFIG_SND_SOC_AC97_BUS
|
|
/* register any AC97 codecs */
|
|
for (i = 0; i < card->num_rtd; i++) {
|
|
ret = soc_register_ac97_dai_link(&card->rtd[i]);
|
|
if (ret < 0) {
|
|
dev_err(card->dev,
|
|
"ASoC: failed to register AC97: %d\n", ret);
|
|
while (--i >= 0)
|
|
soc_unregister_ac97_dai_link(card->rtd[i].codec);
|
|
goto probe_aux_dev_err;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
card->instantiated = 1;
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
mutex_unlock(&card->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);
|
|
|
|
snd_card_free(card->snd_card);
|
|
|
|
base_error:
|
|
mutex_unlock(&card->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);
|
|
|
|
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",
|
|
.owner = THIS_MODULE,
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = soc_probe,
|
|
.remove = soc_remove,
|
|
};
|
|
|
|
/**
|
|
* snd_soc_codec_volatile_register: Report if a register is volatile.
|
|
*
|
|
* @codec: CODEC to query.
|
|
* @reg: Register to query.
|
|
*
|
|
* Boolean function indiciating if a CODEC register is volatile.
|
|
*/
|
|
int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
|
|
unsigned int reg)
|
|
{
|
|
if (codec->volatile_register)
|
|
return codec->volatile_register(codec, reg);
|
|
else
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
|
|
|
|
/**
|
|
* snd_soc_codec_readable_register: Report if a register is readable.
|
|
*
|
|
* @codec: CODEC to query.
|
|
* @reg: Register to query.
|
|
*
|
|
* Boolean function indicating if a CODEC register is readable.
|
|
*/
|
|
int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
|
|
unsigned int reg)
|
|
{
|
|
if (codec->readable_register)
|
|
return codec->readable_register(codec, reg);
|
|
else
|
|
return 1;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
|
|
|
|
/**
|
|
* snd_soc_codec_writable_register: Report if a register is writable.
|
|
*
|
|
* @codec: CODEC to query.
|
|
* @reg: Register to query.
|
|
*
|
|
* Boolean function indicating if a CODEC register is writable.
|
|
*/
|
|
int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
|
|
unsigned int reg)
|
|
{
|
|
if (codec->writable_register)
|
|
return codec->writable_register(codec, reg);
|
|
else
|
|
return 1;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
|
|
|
|
int snd_soc_platform_read(struct snd_soc_platform *platform,
|
|
unsigned int reg)
|
|
{
|
|
unsigned int ret;
|
|
|
|
if (!platform->driver->read) {
|
|
dev_err(platform->dev, "ASoC: platform has no read back\n");
|
|
return -1;
|
|
}
|
|
|
|
ret = platform->driver->read(platform, reg);
|
|
dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
|
|
trace_snd_soc_preg_read(platform, reg, ret);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_platform_read);
|
|
|
|
int snd_soc_platform_write(struct snd_soc_platform *platform,
|
|
unsigned int reg, unsigned int val)
|
|
{
|
|
if (!platform->driver->write) {
|
|
dev_err(platform->dev, "ASoC: platform has no write back\n");
|
|
return -1;
|
|
}
|
|
|
|
dev_dbg(platform->dev, "write %x = %x\n", reg, val);
|
|
trace_snd_soc_preg_write(platform, reg, val);
|
|
return platform->driver->write(platform, reg, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_platform_write);
|
|
|
|
/**
|
|
* snd_soc_new_ac97_codec - initailise AC97 device
|
|
* @codec: audio codec
|
|
* @ops: AC97 bus operations
|
|
* @num: AC97 codec number
|
|
*
|
|
* Initialises AC97 codec resources for use by ad-hoc devices only.
|
|
*/
|
|
int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
|
|
struct snd_ac97_bus_ops *ops, int num)
|
|
{
|
|
mutex_lock(&codec->mutex);
|
|
|
|
codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
|
|
if (codec->ac97 == NULL) {
|
|
mutex_unlock(&codec->mutex);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
|
|
if (codec->ac97->bus == NULL) {
|
|
kfree(codec->ac97);
|
|
codec->ac97 = NULL;
|
|
mutex_unlock(&codec->mutex);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
codec->ac97->bus->ops = ops;
|
|
codec->ac97->num = num;
|
|
|
|
/*
|
|
* Mark the AC97 device to be created by us. This way we ensure that the
|
|
* device will be registered with the device subsystem later on.
|
|
*/
|
|
codec->ac97_created = 1;
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
|
|
|
|
struct snd_ac97_bus_ops *soc_ac97_ops;
|
|
EXPORT_SYMBOL_GPL(soc_ac97_ops);
|
|
|
|
int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
|
|
{
|
|
if (ops == soc_ac97_ops)
|
|
return 0;
|
|
|
|
if (soc_ac97_ops && ops)
|
|
return -EBUSY;
|
|
|
|
soc_ac97_ops = ops;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
|
|
|
|
/**
|
|
* snd_soc_free_ac97_codec - free AC97 codec device
|
|
* @codec: audio codec
|
|
*
|
|
* Frees AC97 codec device resources.
|
|
*/
|
|
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
|
|
{
|
|
mutex_lock(&codec->mutex);
|
|
#ifdef CONFIG_SND_SOC_AC97_BUS
|
|
soc_unregister_ac97_dai_link(codec);
|
|
#endif
|
|
kfree(codec->ac97->bus);
|
|
kfree(codec->ac97);
|
|
codec->ac97 = NULL;
|
|
codec->ac97_created = 0;
|
|
mutex_unlock(&codec->mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
|
|
|
|
unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
|
|
{
|
|
unsigned int ret;
|
|
|
|
ret = codec->read(codec, reg);
|
|
dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
|
|
trace_snd_soc_reg_read(codec, reg, ret);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_read);
|
|
|
|
unsigned int snd_soc_write(struct snd_soc_codec *codec,
|
|
unsigned int reg, unsigned int val)
|
|
{
|
|
dev_dbg(codec->dev, "write %x = %x\n", reg, val);
|
|
trace_snd_soc_reg_write(codec, reg, val);
|
|
return codec->write(codec, reg, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_write);
|
|
|
|
unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
|
|
unsigned int reg, const void *data, size_t len)
|
|
{
|
|
return codec->bulk_write_raw(codec, reg, data, len);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
|
|
|
|
/**
|
|
* snd_soc_update_bits - update codec register bits
|
|
* @codec: audio codec
|
|
* @reg: codec register
|
|
* @mask: register mask
|
|
* @value: new value
|
|
*
|
|
* Writes new register value.
|
|
*
|
|
* Returns 1 for change, 0 for no change, or negative error code.
|
|
*/
|
|
int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
|
|
unsigned int mask, unsigned int value)
|
|
{
|
|
bool change;
|
|
unsigned int old, new;
|
|
int ret;
|
|
|
|
if (codec->using_regmap) {
|
|
ret = regmap_update_bits_check(codec->control_data, reg,
|
|
mask, value, &change);
|
|
} else {
|
|
ret = snd_soc_read(codec, reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
old = ret;
|
|
new = (old & ~mask) | (value & mask);
|
|
change = old != new;
|
|
if (change)
|
|
ret = snd_soc_write(codec, reg, new);
|
|
}
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return change;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_update_bits);
|
|
|
|
/**
|
|
* snd_soc_update_bits_locked - update codec register bits
|
|
* @codec: audio codec
|
|
* @reg: codec register
|
|
* @mask: register mask
|
|
* @value: new value
|
|
*
|
|
* Writes new register value, and takes the codec mutex.
|
|
*
|
|
* Returns 1 for change else 0.
|
|
*/
|
|
int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
|
|
unsigned short reg, unsigned int mask,
|
|
unsigned int value)
|
|
{
|
|
int change;
|
|
|
|
mutex_lock(&codec->mutex);
|
|
change = snd_soc_update_bits(codec, reg, mask, value);
|
|
mutex_unlock(&codec->mutex);
|
|
|
|
return change;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
|
|
|
|
/**
|
|
* snd_soc_test_bits - test register for change
|
|
* @codec: audio codec
|
|
* @reg: codec register
|
|
* @mask: register mask
|
|
* @value: new value
|
|
*
|
|
* Tests a register with a new value and checks if the new value is
|
|
* different from the old value.
|
|
*
|
|
* Returns 1 for change else 0.
|
|
*/
|
|
int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
|
|
unsigned int mask, unsigned int value)
|
|
{
|
|
int change;
|
|
unsigned int old, new;
|
|
|
|
old = snd_soc_read(codec, reg);
|
|
new = (old & ~mask) | value;
|
|
change = old != new;
|
|
|
|
return change;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_test_bits);
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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, int num_controls)
|
|
{
|
|
struct snd_card *card = codec->card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, codec->dev, controls, num_controls,
|
|
codec->name_prefix, codec);
|
|
}
|
|
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, int num_controls)
|
|
{
|
|
struct snd_card *card = platform->card->snd_card;
|
|
|
|
return snd_soc_add_controls(card, platform->dev, controls, num_controls,
|
|
NULL, platform);
|
|
}
|
|
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->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_info_enum_double - enumerated double mixer info callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information about a double enumerated
|
|
* mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
|
|
uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
|
|
uinfo->value.enumerated.items = e->max;
|
|
|
|
if (uinfo->value.enumerated.item > e->max - 1)
|
|
uinfo->value.enumerated.item = e->max - 1;
|
|
strcpy(uinfo->value.enumerated.name,
|
|
e->texts[uinfo->value.enumerated.item]);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
|
|
|
|
/**
|
|
* snd_soc_get_enum_double - enumerated double mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a double enumerated mixer.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val;
|
|
|
|
val = snd_soc_read(codec, e->reg);
|
|
ucontrol->value.enumerated.item[0]
|
|
= (val >> e->shift_l) & e->mask;
|
|
if (e->shift_l != e->shift_r)
|
|
ucontrol->value.enumerated.item[1] =
|
|
(val >> e->shift_r) & e->mask;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
|
|
|
|
/**
|
|
* snd_soc_put_enum_double - enumerated double mixer put callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a double enumerated mixer.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val;
|
|
unsigned int mask;
|
|
|
|
if (ucontrol->value.enumerated.item[0] > e->max - 1)
|
|
return -EINVAL;
|
|
val = ucontrol->value.enumerated.item[0] << e->shift_l;
|
|
mask = e->mask << e->shift_l;
|
|
if (e->shift_l != e->shift_r) {
|
|
if (ucontrol->value.enumerated.item[1] > e->max - 1)
|
|
return -EINVAL;
|
|
val |= ucontrol->value.enumerated.item[1] << e->shift_r;
|
|
mask |= e->mask << e->shift_r;
|
|
}
|
|
|
|
return snd_soc_update_bits_locked(codec, e->reg, mask, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
|
|
|
|
/**
|
|
* snd_soc_get_value_enum_double - semi enumerated double mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a double semi enumerated mixer.
|
|
*
|
|
* Semi enumerated mixer: the enumerated items are referred as values. Can be
|
|
* used for handling bitfield coded enumeration for example.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int reg_val, val, mux;
|
|
|
|
reg_val = snd_soc_read(codec, e->reg);
|
|
val = (reg_val >> e->shift_l) & e->mask;
|
|
for (mux = 0; mux < e->max; mux++) {
|
|
if (val == e->values[mux])
|
|
break;
|
|
}
|
|
ucontrol->value.enumerated.item[0] = mux;
|
|
if (e->shift_l != e->shift_r) {
|
|
val = (reg_val >> e->shift_r) & e->mask;
|
|
for (mux = 0; mux < e->max; mux++) {
|
|
if (val == e->values[mux])
|
|
break;
|
|
}
|
|
ucontrol->value.enumerated.item[1] = mux;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
|
|
|
|
/**
|
|
* snd_soc_put_value_enum_double - semi enumerated double mixer put callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a double semi enumerated mixer.
|
|
*
|
|
* Semi enumerated mixer: the enumerated items are referred as values. Can be
|
|
* used for handling bitfield coded enumeration for example.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val;
|
|
unsigned int mask;
|
|
|
|
if (ucontrol->value.enumerated.item[0] > e->max - 1)
|
|
return -EINVAL;
|
|
val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
|
|
mask = e->mask << e->shift_l;
|
|
if (e->shift_l != e->shift_r) {
|
|
if (ucontrol->value.enumerated.item[1] > e->max - 1)
|
|
return -EINVAL;
|
|
val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
|
|
mask |= e->mask << e->shift_r;
|
|
}
|
|
|
|
return snd_soc_update_bits_locked(codec, e->reg, mask, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
|
|
|
|
/**
|
|
* snd_soc_info_enum_ext - external enumerated single mixer info callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information about an external enumerated
|
|
* single mixer.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
|
|
uinfo->count = 1;
|
|
uinfo->value.enumerated.items = e->max;
|
|
|
|
if (uinfo->value.enumerated.item > e->max - 1)
|
|
uinfo->value.enumerated.item = e->max - 1;
|
|
strcpy(uinfo->value.enumerated.name,
|
|
e->texts[uinfo->value.enumerated.item]);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
|
|
|
|
/**
|
|
* snd_soc_info_volsw_ext - external single mixer info callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information about a single external mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
int max = kcontrol->private_value;
|
|
|
|
if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
|
|
else
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
|
|
uinfo->count = 1;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = max;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
|
|
|
|
/**
|
|
* snd_soc_info_volsw - single mixer info callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information about a single mixer control, or a double
|
|
* mixer control that spans 2 registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
int platform_max;
|
|
|
|
if (!mc->platform_max)
|
|
mc->platform_max = mc->max;
|
|
platform_max = mc->platform_max;
|
|
|
|
if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
|
|
else
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
|
|
uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = platform_max;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
|
|
|
|
/**
|
|
* snd_soc_get_volsw - single mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a single mixer control, or a double mixer
|
|
* control that spans 2 registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int reg2 = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int rshift = mc->rshift;
|
|
int max = mc->max;
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
(snd_soc_read(codec, reg) >> shift) & mask;
|
|
if (invert)
|
|
ucontrol->value.integer.value[0] =
|
|
max - ucontrol->value.integer.value[0];
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
if (reg == reg2)
|
|
ucontrol->value.integer.value[1] =
|
|
(snd_soc_read(codec, reg) >> rshift) & mask;
|
|
else
|
|
ucontrol->value.integer.value[1] =
|
|
(snd_soc_read(codec, reg2) >> shift) & mask;
|
|
if (invert)
|
|
ucontrol->value.integer.value[1] =
|
|
max - ucontrol->value.integer.value[1];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
|
|
|
|
/**
|
|
* snd_soc_put_volsw - single mixer put callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a single mixer control, or a double mixer
|
|
* control that spans 2 registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int reg2 = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int rshift = mc->rshift;
|
|
int max = mc->max;
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
int err;
|
|
bool type_2r = 0;
|
|
unsigned int val2 = 0;
|
|
unsigned int val, val_mask;
|
|
|
|
val = (ucontrol->value.integer.value[0] & mask);
|
|
if (invert)
|
|
val = max - val;
|
|
val_mask = mask << shift;
|
|
val = val << shift;
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
val2 = (ucontrol->value.integer.value[1] & mask);
|
|
if (invert)
|
|
val2 = max - val2;
|
|
if (reg == reg2) {
|
|
val_mask |= mask << rshift;
|
|
val |= val2 << rshift;
|
|
} else {
|
|
val2 = val2 << shift;
|
|
type_2r = 1;
|
|
}
|
|
}
|
|
err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (type_2r)
|
|
err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
|
|
|
|
/**
|
|
* snd_soc_get_volsw_sx - single mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a single mixer control, or a double mixer
|
|
* control that spans 2 registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
|
|
unsigned int reg = mc->reg;
|
|
unsigned int reg2 = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int rshift = mc->rshift;
|
|
int max = mc->max;
|
|
int min = mc->min;
|
|
int mask = (1 << (fls(min + max) - 1)) - 1;
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
((snd_soc_read(codec, reg) >> shift) - min) & mask;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc))
|
|
ucontrol->value.integer.value[1] =
|
|
((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
|
|
|
|
/**
|
|
* snd_soc_put_volsw_sx - double mixer set callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to set the value of a double mixer control that spans 2 registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
|
|
unsigned int reg = mc->reg;
|
|
unsigned int reg2 = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int rshift = mc->rshift;
|
|
int max = mc->max;
|
|
int min = mc->min;
|
|
int mask = (1 << (fls(min + max) - 1)) - 1;
|
|
int err = 0;
|
|
unsigned short val, val_mask, val2 = 0;
|
|
|
|
val_mask = mask << shift;
|
|
val = (ucontrol->value.integer.value[0] + min) & mask;
|
|
val = val << shift;
|
|
|
|
err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
val_mask = mask << rshift;
|
|
val2 = (ucontrol->value.integer.value[1] + min) & mask;
|
|
val2 = val2 << rshift;
|
|
|
|
if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
|
|
|
|
/**
|
|
* snd_soc_info_volsw_s8 - signed mixer info callback
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information about a signed mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
int platform_max;
|
|
int min = mc->min;
|
|
|
|
if (!mc->platform_max)
|
|
mc->platform_max = mc->max;
|
|
platform_max = mc->platform_max;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 2;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = platform_max - min;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
|
|
|
|
/**
|
|
* snd_soc_get_volsw_s8 - signed mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a signed mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
int min = mc->min;
|
|
int val = snd_soc_read(codec, reg);
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
((signed char)(val & 0xff))-min;
|
|
ucontrol->value.integer.value[1] =
|
|
((signed char)((val >> 8) & 0xff))-min;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
|
|
|
|
/**
|
|
* snd_soc_put_volsw_sgn - signed mixer put callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a signed mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
int min = mc->min;
|
|
unsigned int val;
|
|
|
|
val = (ucontrol->value.integer.value[0]+min) & 0xff;
|
|
val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
|
|
|
|
return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
|
|
|
|
/**
|
|
* snd_soc_info_volsw_range - single mixer info callback with range.
|
|
* @kcontrol: mixer control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information, within a range, about a single
|
|
* mixer control.
|
|
*
|
|
* returns 0 for success.
|
|
*/
|
|
int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
int platform_max;
|
|
int min = mc->min;
|
|
|
|
if (!mc->platform_max)
|
|
mc->platform_max = mc->max;
|
|
platform_max = mc->platform_max;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = platform_max - min;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
|
|
|
|
/**
|
|
* snd_soc_put_volsw_range - single mixer put value callback with range.
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value, within a range, for a single mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int rreg = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
int min = mc->min;
|
|
int max = mc->max;
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned int val, val_mask;
|
|
int ret;
|
|
|
|
val = ((ucontrol->value.integer.value[0] + min) & mask);
|
|
if (invert)
|
|
val = max - val;
|
|
val_mask = mask << shift;
|
|
val = val << shift;
|
|
|
|
ret = snd_soc_update_bits_locked(codec, reg, val_mask, val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
val = ((ucontrol->value.integer.value[1] + min) & mask);
|
|
if (invert)
|
|
val = max - val;
|
|
val_mask = mask << shift;
|
|
val = val << shift;
|
|
|
|
ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
|
|
|
|
/**
|
|
* snd_soc_get_volsw_range - single mixer get callback with range
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value, within a range, of a single mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int rreg = mc->rreg;
|
|
unsigned int shift = mc->shift;
|
|
int min = mc->min;
|
|
int max = mc->max;
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
(snd_soc_read(codec, reg) >> shift) & mask;
|
|
if (invert)
|
|
ucontrol->value.integer.value[0] =
|
|
max - ucontrol->value.integer.value[0];
|
|
ucontrol->value.integer.value[0] =
|
|
ucontrol->value.integer.value[0] - min;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
ucontrol->value.integer.value[1] =
|
|
(snd_soc_read(codec, rreg) >> shift) & mask;
|
|
if (invert)
|
|
ucontrol->value.integer.value[1] =
|
|
max - ucontrol->value.integer.value[1];
|
|
ucontrol->value.integer.value[1] =
|
|
ucontrol->value.integer.value[1] - min;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
|
|
|
|
/**
|
|
* snd_soc_limit_volume - Set new limit to an existing volume control.
|
|
*
|
|
* @codec: where to look for the control
|
|
* @name: Name of the control
|
|
* @max: new maximum limit
|
|
*
|
|
* Return 0 for success, else error.
|
|
*/
|
|
int snd_soc_limit_volume(struct snd_soc_codec *codec,
|
|
const char *name, int max)
|
|
{
|
|
struct snd_card *card = codec->card->snd_card;
|
|
struct snd_kcontrol *kctl;
|
|
struct soc_mixer_control *mc;
|
|
int found = 0;
|
|
int ret = -EINVAL;
|
|
|
|
/* Sanity check for name and max */
|
|
if (unlikely(!name || max <= 0))
|
|
return -EINVAL;
|
|
|
|
list_for_each_entry(kctl, &card->controls, list) {
|
|
if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
mc = (struct soc_mixer_control *)kctl->private_value;
|
|
if (max <= mc->max) {
|
|
mc->platform_max = max;
|
|
ret = 0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
|
|
|
|
int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct soc_bytes *params = (void *)kcontrol->private_value;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
|
|
uinfo->count = params->num_regs * codec->val_bytes;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
|
|
|
|
int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_bytes *params = (void *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
int ret;
|
|
|
|
if (codec->using_regmap)
|
|
ret = regmap_raw_read(codec->control_data, params->base,
|
|
ucontrol->value.bytes.data,
|
|
params->num_regs * codec->val_bytes);
|
|
else
|
|
ret = -EINVAL;
|
|
|
|
/* Hide any masked bytes to ensure consistent data reporting */
|
|
if (ret == 0 && params->mask) {
|
|
switch (codec->val_bytes) {
|
|
case 1:
|
|
ucontrol->value.bytes.data[0] &= ~params->mask;
|
|
break;
|
|
case 2:
|
|
((u16 *)(&ucontrol->value.bytes.data))[0]
|
|
&= ~params->mask;
|
|
break;
|
|
case 4:
|
|
((u32 *)(&ucontrol->value.bytes.data))[0]
|
|
&= ~params->mask;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
|
|
|
|
int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_bytes *params = (void *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
int ret, len;
|
|
unsigned int val;
|
|
void *data;
|
|
|
|
if (!codec->using_regmap)
|
|
return -EINVAL;
|
|
|
|
len = params->num_regs * codec->val_bytes;
|
|
|
|
data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* If we've got a mask then we need to preserve the register
|
|
* bits. We shouldn't modify the incoming data so take a
|
|
* copy.
|
|
*/
|
|
if (params->mask) {
|
|
ret = regmap_read(codec->control_data, params->base, &val);
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
val &= params->mask;
|
|
|
|
switch (codec->val_bytes) {
|
|
case 1:
|
|
((u8 *)data)[0] &= ~params->mask;
|
|
((u8 *)data)[0] |= val;
|
|
break;
|
|
case 2:
|
|
((u16 *)data)[0] &= cpu_to_be16(~params->mask);
|
|
((u16 *)data)[0] |= cpu_to_be16(val);
|
|
break;
|
|
case 4:
|
|
((u32 *)data)[0] &= cpu_to_be32(~params->mask);
|
|
((u32 *)data)[0] |= cpu_to_be32(val);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = regmap_raw_write(codec->control_data, params->base,
|
|
data, len);
|
|
|
|
out:
|
|
kfree(data);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
|
|
|
|
/**
|
|
* snd_soc_info_xr_sx - signed multi register info callback
|
|
* @kcontrol: mreg control
|
|
* @uinfo: control element information
|
|
*
|
|
* Callback to provide information of a control that can
|
|
* span multiple codec registers which together
|
|
* forms a single signed value in a MSB/LSB manner.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
struct soc_mreg_control *mc =
|
|
(struct soc_mreg_control *)kcontrol->private_value;
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 1;
|
|
uinfo->value.integer.min = mc->min;
|
|
uinfo->value.integer.max = mc->max;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
|
|
|
|
/**
|
|
* snd_soc_get_xr_sx - signed multi register get callback
|
|
* @kcontrol: mreg control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a control that can span
|
|
* multiple codec registers which together forms a single
|
|
* signed value in a MSB/LSB manner. The control supports
|
|
* specifying total no of bits used to allow for bitfields
|
|
* across the multiple codec registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mreg_control *mc =
|
|
(struct soc_mreg_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int regbase = mc->regbase;
|
|
unsigned int regcount = mc->regcount;
|
|
unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
|
|
unsigned int regwmask = (1<<regwshift)-1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned long mask = (1UL<<mc->nbits)-1;
|
|
long min = mc->min;
|
|
long max = mc->max;
|
|
long val = 0;
|
|
unsigned long regval;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < regcount; i++) {
|
|
regval = snd_soc_read(codec, regbase+i) & regwmask;
|
|
val |= regval << (regwshift*(regcount-i-1));
|
|
}
|
|
val &= mask;
|
|
if (min < 0 && val > max)
|
|
val |= ~mask;
|
|
if (invert)
|
|
val = max - val;
|
|
ucontrol->value.integer.value[0] = val;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
|
|
|
|
/**
|
|
* snd_soc_put_xr_sx - signed multi register get callback
|
|
* @kcontrol: mreg control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a control that can span
|
|
* multiple codec registers which together forms a single
|
|
* signed value in a MSB/LSB manner. The control supports
|
|
* specifying total no of bits used to allow for bitfields
|
|
* across the multiple codec registers.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mreg_control *mc =
|
|
(struct soc_mreg_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int regbase = mc->regbase;
|
|
unsigned int regcount = mc->regcount;
|
|
unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
|
|
unsigned int regwmask = (1<<regwshift)-1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned long mask = (1UL<<mc->nbits)-1;
|
|
long max = mc->max;
|
|
long val = ucontrol->value.integer.value[0];
|
|
unsigned int i, regval, regmask;
|
|
int err;
|
|
|
|
if (invert)
|
|
val = max - val;
|
|
val &= mask;
|
|
for (i = 0; i < regcount; i++) {
|
|
regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
|
|
regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
|
|
err = snd_soc_update_bits_locked(codec, regbase+i,
|
|
regmask, regval);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
|
|
|
|
/**
|
|
* snd_soc_get_strobe - strobe get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback get the value of a strobe mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int mask = 1 << shift;
|
|
unsigned int invert = mc->invert != 0;
|
|
unsigned int val = snd_soc_read(codec, reg) & mask;
|
|
|
|
if (shift != 0 && val != 0)
|
|
val = val >> shift;
|
|
ucontrol->value.enumerated.item[0] = val ^ invert;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
|
|
|
|
/**
|
|
* snd_soc_put_strobe - strobe put callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback strobe a register bit to high then low (or the inverse)
|
|
* in one pass of a single mixer enum control.
|
|
*
|
|
* Returns 1 for success.
|
|
*/
|
|
int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg = mc->reg;
|
|
unsigned int shift = mc->shift;
|
|
unsigned int mask = 1 << shift;
|
|
unsigned int invert = mc->invert != 0;
|
|
unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
|
|
unsigned int val1 = (strobe ^ invert) ? mask : 0;
|
|
unsigned int val2 = (strobe ^ invert) ? 0 : mask;
|
|
int err;
|
|
|
|
err = snd_soc_update_bits_locked(codec, reg, mask, val1);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = snd_soc_update_bits_locked(codec, reg, mask, val2);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
|
|
|
|
/**
|
|
* 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 -EINVAL;
|
|
}
|
|
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 -EINVAL;
|
|
}
|
|
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_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_dai_set_tdm_slot - configure DAI TDM.
|
|
* @dai: DAI
|
|
* @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.
|
|
*
|
|
* Configures a DAI for TDM operation. Both mask and slots are codec and DAI
|
|
* specific.
|
|
*/
|
|
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
|
|
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
|
|
{
|
|
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 -EINVAL;
|
|
}
|
|
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);
|
|
|
|
/**
|
|
* 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, 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];
|
|
|
|
/*
|
|
* Codec must be specified by 1 of name or OF node,
|
|
* not both or neither.
|
|
*/
|
|
if (!!link->codec_name == !!link->codec_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->codec_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);
|
|
|
|
soc_init_card_debugfs(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].dai_link = &card->dai_link[i];
|
|
|
|
INIT_LIST_HEAD(&card->list);
|
|
INIT_LIST_HEAD(&card->dapm_dirty);
|
|
card->instantiated = 0;
|
|
mutex_init(&card->mutex);
|
|
mutex_init(&card->dapm_mutex);
|
|
|
|
ret = snd_soc_instantiate_card(card);
|
|
if (ret != 0)
|
|
soc_cleanup_card_debugfs(card);
|
|
|
|
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)
|
|
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_register_dai - Register a DAI with the ASoC core
|
|
*
|
|
* @dai: DAI to register
|
|
*/
|
|
static int snd_soc_register_dai(struct device *dev,
|
|
struct snd_soc_dai_driver *dai_drv)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
struct snd_soc_dai *dai;
|
|
|
|
dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev));
|
|
|
|
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
|
|
if (dai == NULL)
|
|
return -ENOMEM;
|
|
|
|
/* create DAI component name */
|
|
dai->name = fmt_single_name(dev, &dai->id);
|
|
if (dai->name == NULL) {
|
|
kfree(dai);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dai->dev = dev;
|
|
dai->driver = dai_drv;
|
|
dai->dapm.dev = dev;
|
|
if (!dai->driver->ops)
|
|
dai->driver->ops = &null_dai_ops;
|
|
|
|
mutex_lock(&client_mutex);
|
|
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (codec->dev == dev) {
|
|
dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n",
|
|
dai->name, codec->name);
|
|
dai->codec = codec;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!dai->codec)
|
|
dai->dapm.idle_bias_off = 1;
|
|
|
|
list_add(&dai->list, &dai_list);
|
|
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_unregister_dai - Unregister a DAI from the ASoC core
|
|
*
|
|
* @dai: DAI to unregister
|
|
*/
|
|
static void snd_soc_unregister_dai(struct device *dev)
|
|
{
|
|
struct snd_soc_dai *dai;
|
|
|
|
list_for_each_entry(dai, &dai_list, list) {
|
|
if (dev == dai->dev)
|
|
goto found;
|
|
}
|
|
return;
|
|
|
|
found:
|
|
mutex_lock(&client_mutex);
|
|
list_del(&dai->list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
|
|
kfree(dai->name);
|
|
kfree(dai);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_register_dais - Register multiple DAIs with the ASoC core
|
|
*
|
|
* @dai: Array of DAIs to register
|
|
* @count: Number of DAIs
|
|
*/
|
|
static int snd_soc_register_dais(struct device *dev,
|
|
struct snd_soc_dai_driver *dai_drv, size_t count)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
struct snd_soc_dai *dai;
|
|
int i, ret = 0;
|
|
|
|
dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
|
|
if (dai == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
/* create DAI component name */
|
|
dai->name = fmt_multiple_name(dev, &dai_drv[i]);
|
|
if (dai->name == NULL) {
|
|
kfree(dai);
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
dai->dev = dev;
|
|
dai->driver = &dai_drv[i];
|
|
if (dai->driver->id)
|
|
dai->id = dai->driver->id;
|
|
else
|
|
dai->id = i;
|
|
dai->dapm.dev = dev;
|
|
if (!dai->driver->ops)
|
|
dai->driver->ops = &null_dai_ops;
|
|
|
|
mutex_lock(&client_mutex);
|
|
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (codec->dev == dev) {
|
|
dev_dbg(dev,
|
|
"ASoC: Mapped DAI %s to CODEC %s\n",
|
|
dai->name, codec->name);
|
|
dai->codec = codec;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!dai->codec)
|
|
dai->dapm.idle_bias_off = 1;
|
|
|
|
list_add(&dai->list, &dai_list);
|
|
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name);
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
for (i--; i >= 0; i--)
|
|
snd_soc_unregister_dai(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
|
|
*
|
|
* @dai: Array of DAIs to unregister
|
|
* @count: Number of DAIs
|
|
*/
|
|
static void snd_soc_unregister_dais(struct device *dev, size_t count)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < count; i++)
|
|
snd_soc_unregister_dai(dev);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
/* create platform component name */
|
|
platform->name = fmt_single_name(dev, &platform->id);
|
|
if (platform->name == NULL)
|
|
return -ENOMEM;
|
|
|
|
platform->dev = dev;
|
|
platform->driver = platform_drv;
|
|
platform->dapm.dev = dev;
|
|
platform->dapm.platform = platform;
|
|
platform->dapm.stream_event = platform_drv->stream_event;
|
|
mutex_init(&platform->mutex);
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_add(&platform->list, &platform_list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->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);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
|
|
platform->name);
|
|
kfree(platform->name);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
|
|
|
|
struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
|
|
{
|
|
struct snd_soc_platform *platform;
|
|
|
|
list_for_each_entry(platform, &platform_list, list) {
|
|
if (dev == platform->dev)
|
|
return platform;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
|
|
|
|
/**
|
|
* snd_soc_unregister_platform - Unregister a platform from the ASoC core
|
|
*
|
|
* @platform: platform to unregister
|
|
*/
|
|
void snd_soc_unregister_platform(struct device *dev)
|
|
{
|
|
struct snd_soc_platform *platform;
|
|
|
|
platform = snd_soc_lookup_platform(dev);
|
|
if (!platform)
|
|
return;
|
|
|
|
snd_soc_remove_platform(platform);
|
|
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];
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
size_t reg_size;
|
|
struct snd_soc_codec *codec;
|
|
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;
|
|
|
|
/* create CODEC component name */
|
|
codec->name = fmt_single_name(dev, &codec->id);
|
|
if (codec->name == NULL) {
|
|
ret = -ENOMEM;
|
|
goto fail_codec;
|
|
}
|
|
|
|
if (codec_drv->compress_type)
|
|
codec->compress_type = codec_drv->compress_type;
|
|
else
|
|
codec->compress_type = SND_SOC_FLAT_COMPRESSION;
|
|
|
|
codec->write = codec_drv->write;
|
|
codec->read = codec_drv->read;
|
|
codec->volatile_register = codec_drv->volatile_register;
|
|
codec->readable_register = codec_drv->readable_register;
|
|
codec->writable_register = codec_drv->writable_register;
|
|
codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
|
|
codec->dapm.bias_level = SND_SOC_BIAS_OFF;
|
|
codec->dapm.dev = dev;
|
|
codec->dapm.codec = codec;
|
|
codec->dapm.seq_notifier = codec_drv->seq_notifier;
|
|
codec->dapm.stream_event = codec_drv->stream_event;
|
|
codec->dev = dev;
|
|
codec->driver = codec_drv;
|
|
codec->num_dai = num_dai;
|
|
mutex_init(&codec->mutex);
|
|
|
|
/* allocate CODEC register cache */
|
|
if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
|
|
reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
|
|
codec->reg_size = reg_size;
|
|
/* it is necessary to make a copy of the default register cache
|
|
* because in the case of using a compression type that requires
|
|
* the default register cache to be marked as the
|
|
* kernel might have freed the array by the time we initialize
|
|
* the cache.
|
|
*/
|
|
if (codec_drv->reg_cache_default) {
|
|
codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
|
|
reg_size, GFP_KERNEL);
|
|
if (!codec->reg_def_copy) {
|
|
ret = -ENOMEM;
|
|
goto fail_codec_name;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
|
|
if (!codec->volatile_register)
|
|
codec->volatile_register = snd_soc_default_volatile_register;
|
|
if (!codec->readable_register)
|
|
codec->readable_register = snd_soc_default_readable_register;
|
|
if (!codec->writable_register)
|
|
codec->writable_register = snd_soc_default_writable_register;
|
|
}
|
|
|
|
for (i = 0; i < num_dai; i++) {
|
|
fixup_codec_formats(&dai_drv[i].playback);
|
|
fixup_codec_formats(&dai_drv[i].capture);
|
|
}
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_add(&codec->list, &codec_list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
/* register any DAIs */
|
|
ret = snd_soc_register_dais(dev, dai_drv, num_dai);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret);
|
|
goto fail_codec_name;
|
|
}
|
|
|
|
dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name);
|
|
return 0;
|
|
|
|
fail_codec_name:
|
|
mutex_lock(&client_mutex);
|
|
list_del(&codec->list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
kfree(codec->name);
|
|
fail_codec:
|
|
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;
|
|
|
|
list_for_each_entry(codec, &codec_list, list) {
|
|
if (dev == codec->dev)
|
|
goto found;
|
|
}
|
|
return;
|
|
|
|
found:
|
|
snd_soc_unregister_dais(dev, codec->num_dai);
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_del(&codec->list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name);
|
|
|
|
snd_soc_cache_exit(codec);
|
|
kfree(codec->reg_def_copy);
|
|
kfree(codec->name);
|
|
kfree(codec);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
|
|
|
|
|
|
/**
|
|
* snd_soc_register_component - Register a component with the ASoC core
|
|
*
|
|
*/
|
|
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;
|
|
|
|
dev_dbg(dev, "component register %s\n", dev_name(dev));
|
|
|
|
cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL);
|
|
if (!cmpnt) {
|
|
dev_err(dev, "ASoC: Failed to allocate memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cmpnt->name = fmt_single_name(dev, &cmpnt->id);
|
|
if (!cmpnt->name) {
|
|
dev_err(dev, "ASoC: Failed to simplifying name\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cmpnt->dev = dev;
|
|
cmpnt->driver = cmpnt_drv;
|
|
cmpnt->num_dai = num_dai;
|
|
|
|
/*
|
|
* snd_soc_register_dai() uses fmt_single_name(), and
|
|
* snd_soc_register_dais() uses fmt_multiple_name()
|
|
* for dai->name which is used for name based matching
|
|
*/
|
|
if (1 == num_dai)
|
|
ret = snd_soc_register_dai(dev, dai_drv);
|
|
else
|
|
ret = snd_soc_register_dais(dev, dai_drv, num_dai);
|
|
if (ret < 0) {
|
|
dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret);
|
|
goto error_component_name;
|
|
}
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_add(&cmpnt->list, &component_list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name);
|
|
|
|
return ret;
|
|
|
|
error_component_name:
|
|
kfree(cmpnt->name);
|
|
|
|
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;
|
|
|
|
list_for_each_entry(cmpnt, &component_list, list) {
|
|
if (dev == cmpnt->dev)
|
|
goto found;
|
|
}
|
|
return;
|
|
|
|
found:
|
|
snd_soc_unregister_dais(dev, cmpnt->num_dai);
|
|
|
|
mutex_lock(&client_mutex);
|
|
list_del(&cmpnt->list);
|
|
mutex_unlock(&client_mutex);
|
|
|
|
dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name);
|
|
kfree(cmpnt->name);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
|
|
|
|
/* 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 = card->dev->of_node;
|
|
int ret;
|
|
|
|
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);
|
|
|
|
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_dapm_routes = num_routes;
|
|
card->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)
|
|
{
|
|
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);
|
|
|
|
snprintf(prop, sizeof(prop), "%sframe-master", prefix);
|
|
frame = !!of_get_property(np, prop, NULL);
|
|
|
|
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 __init snd_soc_init(void)
|
|
{
|
|
#ifdef CONFIG_DEBUG_FS
|
|
snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
|
|
if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
|
|
pr_warn("ASoC: Failed to create debugfs directory\n");
|
|
snd_soc_debugfs_root = NULL;
|
|
}
|
|
|
|
if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
|
|
&codec_list_fops))
|
|
pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
|
|
|
|
if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
|
|
&dai_list_fops))
|
|
pr_warn("ASoC: Failed to create DAI list debugfs file\n");
|
|
|
|
if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
|
|
&platform_list_fops))
|
|
pr_warn("ASoC: Failed to create platform list debugfs file\n");
|
|
#endif
|
|
|
|
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();
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
debugfs_remove_recursive(snd_soc_debugfs_root);
|
|
#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");
|