You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/*
|
|
* diag.h - GPIO interface driver for Broadcom boards
|
|
*
|
|
* Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
|
|
* Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* $Id:$
|
|
*/
|
|
|
|
#define MODULE_NAME "diag"
|
|
|
|
#define MAX_GPIO 8
|
|
#define FLASH_TIME HZ/6
|
|
|
|
enum polarity_t {
|
|
REVERSE = 0,
|
|
NORMAL = 1,
|
|
};
|
|
|
|
enum {
|
|
PROC_BUTTON,
|
|
PROC_LED,
|
|
PROC_MODEL,
|
|
PROC_GPIOMASK
|
|
};
|
|
|
|
struct prochandler_t {
|
|
int type;
|
|
void *ptr;
|
|
};
|
|
|
|
struct button_t {
|
|
struct prochandler_t proc;
|
|
char *name;
|
|
u32 gpio;
|
|
unsigned long seen;
|
|
u8 pressed;
|
|
};
|
|
|
|
struct led_t {
|
|
struct prochandler_t proc;
|
|
char *name;
|
|
u32 gpio;
|
|
u8 polarity;
|
|
u8 flash;
|
|
u8 state;
|
|
};
|
|
|
|
struct platform_t {
|
|
char *name;
|
|
|
|
struct button_t buttons[MAX_GPIO];
|
|
u32 button_mask;
|
|
u32 button_polarity;
|
|
void (*platform_init)(void);
|
|
|
|
struct led_t leds[MAX_GPIO];
|
|
};
|
|
|
|
struct event_t {
|
|
struct work_struct wq;
|
|
char buf[256];
|
|
char *argv[3];
|
|
char *envp[6];
|
|
};
|
|
|
|
extern char *nvram_get(char *str);
|
|
|
|
static struct platform_t platform;
|
|
|
|
/* buttons */
|
|
|
|
static void register_buttons(struct button_t *b);
|
|
static void unregister_buttons(struct button_t *b);
|
|
|
|
static void hotplug_button(struct event_t *event);
|
|
static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs);
|
|
|
|
/* leds */
|
|
|
|
static void register_leds(struct led_t *l);
|
|
static void unregister_leds(struct led_t *l);
|
|
|
|
static void set_led_extif(struct led_t *led);
|
|
static void led_flash(unsigned long dummy);
|
|
|
|
/* 2.4 compatibility */
|
|
#ifndef TIMER_INITIALIZER
|
|
#define TIMER_INITIALIZER(_function, _expires, _data) \
|
|
{ \
|
|
/* _expires and _data currently unused */ \
|
|
function: _function \
|
|
}
|
|
#endif
|
|
|
|
static struct timer_list led_timer = TIMER_INITIALIZER(&led_flash, 0, 0);
|
|
|
|
/* proc */
|
|
|
|
static struct proc_dir_entry *diag, *leds;
|
|
|
|
static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
|
|
static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
|
|
|
|
static struct file_operations diag_proc_fops = {
|
|
read: diag_proc_read,
|
|
write: diag_proc_write
|
|
};
|
|
|
|
static struct prochandler_t proc_model = { .type = PROC_MODEL };
|
|
static struct prochandler_t proc_gpiomask = { .type = PROC_GPIOMASK };
|
|
|