98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
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/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/debugfs.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/uaccess.h>
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#include <linux/wait.h>
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#include <mach/debug_mm.h>
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#include <mach/msm_smd.h>
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#include "adsp.h"
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#define MAX_LEN 64
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#ifdef CONFIG_DEBUG_FS
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static struct dentry *adsp_dentry;
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#endif
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static char l_buf[MAX_LEN];
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static unsigned int crash_enable;
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static ssize_t q5_debug_open(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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MM_DBG("q5 debugfs opened\n");
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return 0;
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}
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static ssize_t q5_debug_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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int len;
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if (count < 0)
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return 0;
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len = count > (MAX_LEN - 1) ? (MAX_LEN - 1) : count;
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if (copy_from_user(l_buf, buf, len)) {
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MM_INFO("Unable to copy data from user space\n");
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return -EFAULT;
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}
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l_buf[len] = 0;
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if (l_buf[len - 1] == '\n') {
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l_buf[len - 1] = 0;
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len--;
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}
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if (!strncmp(l_buf, "boom", MAX_LEN)) {
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q5audio_dsp_not_responding();
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} else if (!strncmp(l_buf, "enable", MAX_LEN)) {
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crash_enable = 1;
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MM_INFO("Crash enabled : %d\n", crash_enable);
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} else if (!strncmp(l_buf, "disable", MAX_LEN)) {
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crash_enable = 0;
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MM_INFO("Crash disabled : %d\n", crash_enable);
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} else
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MM_INFO("Unknown Command\n");
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return count;
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}
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static const struct file_operations q5_debug_fops = {
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.write = q5_debug_write,
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.open = q5_debug_open,
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};
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static int __init q5_debug_init(void)
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{
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#ifdef CONFIG_DEBUG_FS
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adsp_dentry = debugfs_create_file("q5_debug", S_IFREG | S_IRUGO,
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NULL, (void *) NULL, &q5_debug_fops);
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#endif /* CONFIG_DEBUG_FS */
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return 0;
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}
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device_initcall(q5_debug_init);
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