2 * NewportMedia WiFi chipset driver test tools - wilc-debug
3 * Copyright (c) 2012 NewportMedia Inc.
4 * Author: SSW <sswd@wilcsemic.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #if defined(WILC_DEBUGFS)
13 #include <linux/module.h>
14 #include <linux/debugfs.h>
15 #include <linux/poll.h>
16 #include <linux/sched.h>
18 #include "wilc_wlan_if.h"
21 static struct dentry *wilc_dir;
24 * --------------------------------------------------------------------------------
31 #define DBG_LEVEL_ALL (DEBUG | INFO | WRN | ERR)
32 static atomic_t WILC_DEBUG_LEVEL = ATOMIC_INIT(ERR);
33 EXPORT_SYMBOL_GPL(WILC_DEBUG_LEVEL);
36 * --------------------------------------------------------------------------------
40 static ssize_t wilc_debug_level_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos)
45 /* only allow read from start */
49 res = scnprintf(buf, sizeof(buf), "Debug Level: %x\n", atomic_read(&WILC_DEBUG_LEVEL));
51 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
54 static ssize_t wilc_debug_level_write(struct file *filp, const char __user *buf,
55 size_t count, loff_t *ppos)
60 ret = kstrtouint_from_user(buf, count, 16, &flag);
64 if (flag > DBG_LEVEL_ALL) {
65 printk("%s, value (0x%08x) is out of range, stay previous flag (0x%08x)\n", __func__, flag, atomic_read(&WILC_DEBUG_LEVEL));
69 atomic_set(&WILC_DEBUG_LEVEL, (int)flag);
72 printk(KERN_INFO "Debug-level disabled\n");
74 printk(KERN_INFO "Debug-level enabled\n");
80 * --------------------------------------------------------------------------------
83 #define FOPS(_open, _read, _write, _poll) { \
84 .owner = THIS_MODULE, \
91 struct wilc_debugfs_info_t {
95 const struct file_operations fops;
98 static struct wilc_debugfs_info_t debugfs_info[] = {
99 { "wilc_debug_level", 0666, (DEBUG | ERR), FOPS(NULL, wilc_debug_level_read, wilc_debug_level_write, NULL), },
102 static int __init wilc_debugfs_init(void)
105 struct wilc_debugfs_info_t *info;
107 wilc_dir = debugfs_create_dir("wilc_wifi", NULL);
108 for (i = 0; i < ARRAY_SIZE(debugfs_info); i++) {
109 info = &debugfs_info[i];
110 debugfs_create_file(info->name,
118 module_init(wilc_debugfs_init);
120 static void __exit wilc_debugfs_remove(void)
122 debugfs_remove_recursive(wilc_dir);
124 module_exit(wilc_debugfs_remove);