jz4740_wdt.c File Reference

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <asm/mach-jz4740/timer.h>

Go to the source code of this file.

Data Structures
struct	jz4740_wdt_drvdata

Macros
#define	JZ_REG_WDT_TIMER_DATA   0x0
#define	JZ_REG_WDT_COUNTER_ENABLE   0x4
#define	JZ_REG_WDT_TIMER_COUNTER   0x8
#define	JZ_REG_WDT_TIMER_CONTROL   0xC
#define	JZ_WDT_CLOCK_PCLK   0x1
#define	JZ_WDT_CLOCK_RTC   0x2
#define	JZ_WDT_CLOCK_EXT   0x4
#define	JZ_WDT_CLOCK_DIV_SHIFT   3
#define	JZ_WDT_CLOCK_DIV_1   (0 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	JZ_WDT_CLOCK_DIV_4   (1 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	JZ_WDT_CLOCK_DIV_16   (2 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	JZ_WDT_CLOCK_DIV_64   (3 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	JZ_WDT_CLOCK_DIV_256   (4 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	JZ_WDT_CLOCK_DIV_1024   (5 << JZ_WDT_CLOCK_DIV_SHIFT)
#define	DEFAULT_HEARTBEAT   5
#define	MAX_HEARTBEAT   2048

Functions
	module_param (nowayout, bool, 0)
	MODULE_PARM_DESC (nowayout,"Watchdog cannot be stopped once started (default="__MODULE_STRING(WATCHDOG_NOWAYOUT)")")
	module_param (heartbeat, uint, 0)
	MODULE_PARM_DESC (heartbeat,"Watchdog heartbeat period in seconds from 1 to "__MODULE_STRING(MAX_HEARTBEAT)", default "__MODULE_STRING(DEFAULT_HEARTBEAT))
	module_platform_driver (jz4740_wdt_driver)
	MODULE_AUTHOR ("Paul Cercueil <[email protected]>")
	MODULE_DESCRIPTION ("jz4740 Watchdog Driver")
	MODULE_LICENSE ("GPL")
	MODULE_ALIAS_MISCDEV (WATCHDOG_MINOR)
	MODULE_ALIAS ("platform:jz4740-wdt")

Macro Definition Documentation

#define DEFAULT_HEARTBEAT   5

Definition at line 50 of file jz4740_wdt.c.

#define JZ_REG_WDT_COUNTER_ENABLE   0x4

Definition at line 33 of file jz4740_wdt.c.

#define JZ_REG_WDT_TIMER_CONTROL   0xC

Definition at line 35 of file jz4740_wdt.c.

#define JZ_REG_WDT_TIMER_COUNTER   0x8

Definition at line 34 of file jz4740_wdt.c.

#define JZ_REG_WDT_TIMER_DATA   0x0

Definition at line 32 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_1   (0 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 43 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_1024   (5 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 48 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_16   (2 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 45 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_256   (4 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 47 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_4   (1 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 44 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_64   (3 << JZ_WDT_CLOCK_DIV_SHIFT)

Definition at line 46 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_DIV_SHIFT   3

Definition at line 41 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_EXT   0x4

Definition at line 39 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_PCLK   0x1

Definition at line 37 of file jz4740_wdt.c.

#define JZ_WDT_CLOCK_RTC   0x2

Definition at line 38 of file jz4740_wdt.c.

#define MAX_HEARTBEAT   2048

Definition at line 51 of file jz4740_wdt.c.

Function Documentation

MODULE_ALIAS

(

"platform:jz4740-wdt"

)

MODULE_ALIAS_MISCDEV

(

WATCHDOG_MINOR

)

MODULE_AUTHOR

(

"Paul Cercueil <[email protected]>"

)

MODULE_DESCRIPTION

(

"jz4740 Watchdog Driver"

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	nowayout	,
		bool	,
		0
	)

module_param	(	heartbeat	,
		uint	,
		0
	)

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

MODULE_PARM_DESC	(	heartbeat	,
		"Watchdog heartbeat period in seconds from 1 to "__MODULE_STRING(MAX_HEARTBEAT)"	,
		default"	__MODULE_STRINGDEFAULT_HEARTBEAT
	)

module_platform_driver

(

jz4740_wdt_driver

)