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