at91sam9_wdt.c File Reference

#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/watchdog.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/bitops.h>
#include <linux/uaccess.h>
#include "at91sam9_wdt.h"

Go to the source code of this file.

Macros
#define	pr_fmt(fmt)   KBUILD_MODNAME ": " fmt
#define	DRV_NAME   "AT91SAM9 Watchdog"
#define	wdt_read(field)   __raw_readl(at91wdt_private.base + field)
#define	wdt_write(field, val)   __raw_writel((val), at91wdt_private.base + field)
#define	ms_to_ticks(t)   (((t << 8) / 1000) - 1)
#define	ticks_to_ms(t)   (((t + 1) * 1000) >> 8)
#define	WDT_HW_TIMEOUT   2
#define	WDT_TIMEOUT   (HZ/2)
#define	WDT_HEARTBEAT   15

Functions
	module_param (heartbeat, int, 0)
	MODULE_PARM_DESC (heartbeat,"Watchdog heartbeats in seconds. ""(default = "__MODULE_STRING(WDT_HEARTBEAT)")")
	module_param (nowayout, bool, 0)
	MODULE_PARM_DESC (nowayout,"Watchdog cannot be stopped once started ""(default="__MODULE_STRING(WATCHDOG_NOWAYOUT)")")
	module_init (at91sam_wdt_init)
	module_exit (at91sam_wdt_exit)
	MODULE_AUTHOR ("Renaud CERRATO <[email protected]>")
	MODULE_DESCRIPTION ("Watchdog driver for Atmel AT91SAM9x processors")
	MODULE_LICENSE ("GPL")
	MODULE_ALIAS_MISCDEV (WATCHDOG_MINOR)

Macro Definition Documentation

#define DRV_NAME   "AT91SAM9 Watchdog"

Definition at line 38 of file at91sam9_wdt.c.

#define ms_to_ticks

(

t

)

(((t << 8) / 1000) - 1)

Definition at line 49 of file at91sam9_wdt.c.

#define pr_fmt

(

fmt

)

KBUILD_MODNAME ": " fmt

Definition at line 18 of file at91sam9_wdt.c.

#define ticks_to_ms

(

t

)

(((t + 1) * 1000) >> 8)

Definition at line 50 of file at91sam9_wdt.c.

#define WDT_HEARTBEAT   15

Definition at line 59 of file at91sam9_wdt.c.

#define WDT_HW_TIMEOUT   2

Definition at line 53 of file at91sam9_wdt.c.

#define wdt_read

(

field

)

__raw_readl(at91wdt_private.base + field)

Definition at line 40 of file at91sam9_wdt.c.

#define WDT_TIMEOUT   (HZ/2)

Definition at line 56 of file at91sam9_wdt.c.

#define wdt_write	(		field,
			val
	)		__raw_writel((val), at91wdt_private.base + field)

Definition at line 42 of file at91sam9_wdt.c.

Function Documentation

MODULE_ALIAS_MISCDEV

(

WATCHDOG_MINOR

)

MODULE_AUTHOR

(

"Renaud CERRATO <[email protected]>"

)

MODULE_DESCRIPTION

(

"Watchdog driver for Atmel AT91SAM9x processors"

)

module_exit

(

at91sam_wdt_exit

)

module_init

(

at91sam_wdt_init

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	heartbeat	,
		int	,
		0
	)

module_param	(	nowayout	,
		bool	,
		0
	)

MODULE_PARM_DESC	(	heartbeat	,
		"Watchdog heartbeats in seconds. ""(default = "__MODULE_STRING(WDT_HEARTBEAT)")"
	)

MODULE_PARM_DESC	(	nowayout	,
		"Watchdog cannot be stopped once started ""(default="__MODULE_STRING(WATCHDOG_NOWAYOUT)")"
	)

Variable Documentation

void __iomem* base

Definition at line 73 of file at91sam9_wdt.c.

char expect_close

Definition at line 76 of file at91sam9_wdt.c.

unsigned long next_heartbeat

Definition at line 74 of file at91sam9_wdt.c.

static int open

Definition at line 75 of file at91sam9_wdt.c.

struct timer_list timer

Definition at line 77 of file at91sam9_wdt.c.