1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
7 #if defined(WILC_DEBUGFS)
8 #include <linux/module.h>
9 #include <linux/debugfs.h>
11 #include "wilc_wlan_if.h"
13 static struct dentry *wilc_dir;
20 #define DBG_LEVEL_ALL (DEBUG | INFO | WRN | ERR)
21 static atomic_t WILC_DEBUG_LEVEL = ATOMIC_INIT(ERR);
22 EXPORT_SYMBOL_GPL(WILC_DEBUG_LEVEL);
24 static ssize_t wilc_debug_level_read(struct file *file, char __user *userbuf,
25 size_t count, loff_t *ppos)
30 /* only allow read from start */
34 res = scnprintf(buf, sizeof(buf), "Debug Level: %x\n",
35 atomic_read(&WILC_DEBUG_LEVEL));
37 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
40 static ssize_t wilc_debug_level_write(struct file *filp,
41 const char __user *buf, size_t count,
47 ret = kstrtouint_from_user(buf, count, 16, &flag);
51 if (flag > DBG_LEVEL_ALL) {
52 pr_info("%s, value (0x%08x) is out of range, stay previous flag (0x%08x)\n",
53 __func__, flag, atomic_read(&WILC_DEBUG_LEVEL));
57 atomic_set(&WILC_DEBUG_LEVEL, (int)flag);
60 pr_info("Debug-level disabled\n");
62 pr_info("Debug-level enabled\n");
67 #define FOPS(_open, _read, _write, _poll) { \
68 .owner = THIS_MODULE, \
75 struct wilc_debugfs_info_t {
79 const struct file_operations fops;
82 static struct wilc_debugfs_info_t debugfs_info[] = {
87 FOPS(NULL, wilc_debug_level_read, wilc_debug_level_write, NULL),
91 static int __init wilc_debugfs_init(void)
94 struct wilc_debugfs_info_t *info;
96 wilc_dir = debugfs_create_dir("wilc_wifi", NULL);
97 for (i = 0; i < ARRAY_SIZE(debugfs_info); i++) {
98 info = &debugfs_info[i];
99 debugfs_create_file(info->name,
107 module_init(wilc_debugfs_init);
109 static void __exit wilc_debugfs_remove(void)
111 debugfs_remove_recursive(wilc_dir);
113 module_exit(wilc_debugfs_remove);