2 * diag.h - GPIO interface driver for Broadcom boards
4 * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
5 * Felix Fietkau <nbd@openwrt.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include <linux/irq.h>
25 #define MODULE_NAME "diag"
28 #define FLASH_TIME HZ/6
43 struct prochandler_t {
49 struct prochandler_t proc;
57 struct prochandler_t proc;
68 struct button_t buttons[MAX_GPIO];
71 void (*platform_init)(void);
73 struct led_t leds[MAX_GPIO];
77 struct work_struct wq;
80 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
90 extern char *nvram_get(char *str);
92 static struct platform_t platform;
96 static void register_buttons(struct button_t *b);
97 static void unregister_buttons(struct button_t *b);
100 static void hotplug_button(struct work_struct *work);
101 static irqreturn_t button_handler(int irq, void *dev_id);
103 static void hotplug_button(struct event_t *event);
104 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs);
109 static void register_leds(struct led_t *l);
110 static void unregister_leds(struct led_t *l);
112 static void set_led_extif(struct led_t *led);
113 static void led_flash(unsigned long dummy);
115 /* 2.4 compatibility */
116 #ifndef TIMER_INITIALIZER
117 #define TIMER_INITIALIZER(_function, _expires, _data) \
119 /* _expires and _data currently unused */ \
120 function: _function \
124 static struct timer_list led_timer = TIMER_INITIALIZER(&led_flash, 0, 0);
128 static struct proc_dir_entry *diag, *leds;
130 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
131 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
133 static struct file_operations diag_proc_fops = {
134 read: diag_proc_read,
135 write: diag_proc_write
138 static struct prochandler_t proc_model = { .type = PROC_MODEL };
139 static struct prochandler_t proc_gpiomask = { .type = PROC_GPIOMASK };