M7350/kernel/arch/arm/mach-msm/qdsp6/audiov2/routing.c

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2024-09-09 08:52:07 +00:00
/* arch/arm/mach-msm/qdsp6/audiov2/routing.c
*
* Copyright (C) 2009 Google, Inc.
* Copyright (c) 2009, The Linux Foundation. All rights reserved.
*
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
#include <mach/msm_qdsp6_audiov2.h>
static int q6_open(struct inode *inode, struct file *file)
{
return 0;
}
static ssize_t q6_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
char cmd[32];
if (count >= sizeof(cmd))
return -EINVAL;
if (copy_from_user(cmd, buf, count))
return -EFAULT;
cmd[count] = 0;
if ((count > 1) && (cmd[count-1] == '\n'))
cmd[count-1] = 0;
q6audio_set_route(cmd);
return count;
}
static int q6_release(struct inode *inode, struct file *file)
{
return 0;
}
static const struct file_operations q6_fops = {
.owner = THIS_MODULE,
.open = q6_open,
.write = q6_write,
.release = q6_release,
};
static struct miscdevice q6_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "msm_audio_route",
.fops = &q6_fops,
};
static int __init q6_init(void)
{
return misc_register(&q6_misc);
}
device_initcall(q6_init);