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Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: (28 commits)
  [WATCHDOG] Fix pcwd_init_module crash
  [WATCHDOG] ICH9 support for iTCO_wdt
  [WATCHDOG] 631xESB/632xESB support for iTCO_wdt - add all LPC bridges
  [WATCHDOG] 631xESB/632xESB support for iTCO_wdt
  [WATCHDOG] omap_wdt.c - default error for IOCTL is -ENOTTY
  [WATCHDOG] Return value of nonseekable_open
  [WATCHDOG] mv64x60_wdt: Rework the timeout register manipulation
  [WATCHDOG] mv64x60_wdt: disable watchdog timer when driver is probed
  [WATCHDOG] mv64x60_wdt: Support the WDIOF_MAGICCLOSE feature
  [WATCHDOG] mv64x60_wdt: Add a module parameter to change nowayout setting
  [WATCHDOG] mv64x60_wdt: Add WDIOC_SETOPTIONS ioctl support
  [WATCHDOG] mv64x60_wdt: Support for WDIOC_SETTIMEOUT ioctl
  [WATCHDOG] mv64x60_wdt: Fix WDIOC_GETTIMEOUT return value
  [WATCHDOG] mv64x60_wdt: Check return value of nonseekable_open
  [WATCHDOG] mv64x60_wdt: Add arch/powerpc platform support
  [WATCHDOG] mv64x60_wdt: Get register address from platform data
  [WATCHDOG] mv64x60_wdt: set up platform_device in platform code
  [WATCHDOG] ensure mouse and keyboard ignored in w83627hf_wdt
  [WATCHDOG] s3c2410_wdt: fixup after arch include moves
  [WATCHDOG] git-watchdog-typo
  ...
This commit is contained in:
Linus Torvalds 2007-07-31 20:43:52 -07:00
commit 2f63251ed0
29 changed files with 1511 additions and 158 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
MAINTAINERS
View file

@ -756,6 +756,14 @@ L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
W: http://blackfin.uclinux.org
S: Supported
BLACKFIN WATCHDOG DRIVER
P: Mike Frysinger
M: michael.frysinger@analog.com
M: vapier.adi@gmail.com
L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
W: http://blackfin.uclinux.org
S: Supported
BAYCOM/HDLCDRV DRIVERS FOR AX.25
P: Thomas Sailer
M: t.sailer@alumni.ethz.ch

6
arch/powerpc/boot/dts/prpmc2800.dts
View file

@ -207,6 +207,12 @@
interrupt-parent = <&/mv64x60/pic>;
};
wdt@b410 { /* watchdog timer */
compatible = "marvell,mv64x60-wdt";
reg = <b410 8>;
timeout = <a>; /* wdt timeout in seconds */
};
i2c@c000 {
device_type = "i2c";
compatible = "marvell,mv64x60-i2c";

64
arch/powerpc/sysdev/mv64x60_dev.c
View file

@ -390,6 +390,61 @@ static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
return err;
}
/*
* Create mv64x60_wdt platform devices
*/
static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
{
struct resource r;
struct platform_device *pdev;
struct mv64x60_wdt_pdata pdata;
const unsigned int *prop;
int err;
err = of_address_to_resource(np, 0, &r);
if (err)
return err;
memset(&pdata, 0, sizeof(pdata));
prop = of_get_property(np, "timeout", NULL);
if (!prop)
return -ENODEV;
pdata.timeout = *prop;
np = of_get_parent(np);
if (!np)
return -ENODEV;
prop = of_get_property(np, "clock-frequency", NULL);
of_node_put(np);
if (!prop)
return -ENODEV;
pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
if (!pdev)
return -ENOMEM;
err = platform_device_add_resources(pdev, &r, 1);
if (err)
goto error;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto error;
err = platform_device_add(pdev);
if (err)
goto error;
return 0;
error:
platform_device_put(pdev);
return err;
}
static int __init mv64x60_device_setup(void)
{
struct device_node *np = NULL;
@ -414,6 +469,15 @@ static int __init mv64x60_device_setup(void)
if ((err = mv64x60_i2c_device_setup(np, id)))
goto error;
/* support up to one watchdog timer */
np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
if (np) {
if ((err = mv64x60_wdt_device_setup(np, id)))
goto error;
of_node_put(np);
}
return 0;
error:

29
arch/ppc/syslib/mv64x60.c
View file

@ -441,6 +441,32 @@ static struct platform_device i2c_device = {
};
#endif
#ifdef CONFIG_WATCHDOG
static struct mv64x60_wdt_pdata mv64x60_wdt_pdata = {
.timeout = 10, /* default watchdog expiry in seconds */
.bus_clk = 133, /* default bus clock in MHz */
};
static struct resource mv64x60_wdt_resources[] = {
[0] = {
.name = "mv64x60 wdt base",
.start = MV64x60_WDT_WDC,
.end = MV64x60_WDT_WDC + 8 - 1, /* two 32-bit registers */
.flags = IORESOURCE_MEM,
},
};
static struct platform_device wdt_device = {
.name = MV64x60_WDT_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_wdt_resources),
.resource = mv64x60_wdt_resources,
.dev = {
.platform_data = &mv64x60_wdt_pdata,
},
};
#endif
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
static struct mv64xxx_pdata mv64xxx_pdata = {
.hs_reg_valid = 0,
@ -476,6 +502,9 @@ static struct platform_device *mv64x60_pd_devs[] __initdata = {
#ifdef CONFIG_I2C_MV64XXX
&i2c_device,
#endif
#ifdef CONFIG_MV64X60_WDT
&wdt_device,
#endif
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
&mv64xxx_device,
#endif

1
drivers/Makefile
View file

@ -66,6 +66,7 @@ obj-y += i2c/
obj-$(CONFIG_W1) += w1/
obj-$(CONFIG_POWER_SUPPLY) += power/
obj-$(CONFIG_HWMON) += hwmon/
obj-$(CONFIG_WATCHDOG) += char/watchdog/
obj-$(CONFIG_PHONE) += telephony/
obj-$(CONFIG_MD) += md/
obj-$(CONFIG_BT) += bluetooth/

1
drivers/char/Makefile
View file

@ -97,7 +97,6 @@ obj-$(CONFIG_GPIO_VR41XX) += vr41xx_giu.o
obj-$(CONFIG_GPIO_TB0219) += tb0219.o
obj-$(CONFIG_TELCLOCK) += tlclk.o
obj-$(CONFIG_WATCHDOG) += watchdog/
obj-$(CONFIG_MWAVE) += mwave/
obj-$(CONFIG_AGP) += agp/
obj-$(CONFIG_DRM) += drm/

117
drivers/char/watchdog/Kconfig
View file

@ -55,6 +55,8 @@ config SOFT_WATCHDOG
To compile this driver as a module, choose M here: the
module will be called softdog.
# ALPHA Architecture
# ARM Architecture
config AT91RM9200_WATCHDOG
@ -189,7 +191,7 @@ config PNX4008_WATCHDOG
config IOP_WATCHDOG
tristate "IOP Watchdog"
depends on WATCHDOG && PLAT_IOP
depends on PLAT_IOP
select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
help
Say Y here if to include support for the watchdog timer
@ -203,15 +205,48 @@ config IOP_WATCHDOG
operating as an Root Complex and/or Central Resource, the PCI-X
and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
config DAVINCI_WATCHDOG
tristate "DaVinci watchdog"
depends on ARCH_DAVINCI
help
Say Y here if to include support for the watchdog timer
in the DaVinci DM644x/DM646x processors.
To compile this driver as a module, choose M here: the
module will be called davinci_wdt.
NOTE: once enabled, this timer cannot be disabled.
Say N if you are unsure.
# ARM26 Architecture
# AVR32 Architecture
config AT32AP700X_WDT
tristate "AT32AP700x watchdog"
depends on WATCHDOG && CPU_AT32AP7000
depends on CPU_AT32AP7000
help
Watchdog timer embedded into AT32AP700x devices. This will reboot
your system when the timeout is reached.
# BLACKFIN Architecture
config BFIN_WDT
tristate "Blackfin On-Chip Watchdog Timer"
depends on BLACKFIN
---help---
If you say yes here you will get support for the Blackfin On-Chip
Watchdog Timer. If you have one of these processors and wish to
have watchdog support enabled, say Y, otherwise say N.
To compile this driver as a module, choose M here: the
module will be called bfin_wdt.
# CRIS Architecture
# FRV Architecture
# H8300 Architecture
# X86 (i386 + ia64 + x86_64) Architecture
config ACQUIRE_WDT
@ -540,7 +575,47 @@ config SBC_EPX_C3_WATCHDOG
To compile this driver as a module, choose M here: the
module will be called sbc_epx_c3.
# PowerPC Architecture
# M32R Architecture
# M68K Architecture
# M68KNOMMU Architecture
# MIPS Architecture
config INDYDOG
tristate "Indy/I2 Hardware Watchdog"
depends on SGI_IP22
help
Hardware driver for the Indy's/I2's watchdog. This is a
watchdog timer that will reboot the machine after a 60 second
timer expired and no process has written to /dev/watchdog during
that time.
config WDT_MTX1
tristate "MTX-1 Hardware Watchdog"
depends on MIPS_MTX1
help
Hardware driver for the MTX-1 boards. This is a watchdog timer that
will reboot the machine after a 100 seconds timer expired.
config WDT_RM9K_GPI
tristate "RM9000/GPI hardware watchdog"
depends on CPU_RM9000
help
Watchdog implementation using the GPI hardware found on
PMC-Sierra RM9xxx CPUs.
To compile this driver as a module, choose M here: the
module will be called rm9k_wdt.
# PARISC Architecture
# POWERPC Architecture
config MPC5200_WDT
tristate "MPC5200 Watchdog Timer"
depends on PPC_MPC52xx
config 8xx_WDT
tristate "MPC8xx Watchdog Timer"
@ -572,34 +647,6 @@ config WATCHDOG_RTAS
To compile this driver as a module, choose M here. The module
will be called wdrtas.
# MIPS Architecture
config INDYDOG
tristate "Indy/I2 Hardware Watchdog"
depends on SGI_IP22
help
Hardware driver for the Indy's/I2's watchdog. This is a
watchdog timer that will reboot the machine after a 60 second
timer expired and no process has written to /dev/watchdog during
that time.
config WDT_MTX1
tristate "MTX-1 Hardware Watchdog"
depends on MIPS_MTX1
help
Hardware driver for the MTX-1 boards. This is a watchdog timer that
will reboot the machine after a 100 seconds timer expired.
config WDT_RM9K_GPI
tristate "RM9000/GPI hardware watchdog"
depends on CPU_RM9000
help
Watchdog implementation using the GPI hardware found on
PMC-Sierra RM9xxx CPUs.
To compile this driver as a module, choose M here: the
module will be called rm9k_wdt.
# S390 Architecture
config ZVM_WATCHDOG
@ -614,7 +661,7 @@ config ZVM_WATCHDOG
To compile this driver as a module, choose M here. The module
will be called vmwatchdog.
# SUPERH Architecture
# SUPERH (sh + sh64) Architecture
config SH_WDT
tristate "SuperH Watchdog"
@ -641,6 +688,8 @@ config SH_WDT_MMAP
If you say Y here, user applications will be able to mmap the
WDT/CPG registers.
# SPARC Architecture
# SPARC64 Architecture
config WATCHDOG_CP1XXX
@ -665,6 +714,10 @@ config WATCHDOG_RIO
machines. The watchdog timeout period is normally one minute but
can be changed with a boot-time parameter.
# V850 Architecture
# XTENSA Architecture
#
# ISA-based Watchdog Cards
#

43
drivers/char/watchdog/Makefile
View file

@ -22,6 +22,8 @@ obj-$(CONFIG_WDTPCI) += wdt_pci.o
# USB-based Watchdog Cards
obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o
# ALPHA Architecture
# ARM Architecture
obj-$(CONFIG_AT91RM9200_WATCHDOG) += at91rm9200_wdt.o
obj-$(CONFIG_OMAP_WATCHDOG) += omap_wdt.o
@ -36,10 +38,22 @@ obj-$(CONFIG_MPCORE_WATCHDOG) += mpcore_wdt.o
obj-$(CONFIG_EP93XX_WATCHDOG) += ep93xx_wdt.o
obj-$(CONFIG_PNX4008_WATCHDOG) += pnx4008_wdt.o
obj-$(CONFIG_IOP_WATCHDOG) += iop_wdt.o
obj-$(CONFIG_DAVINCI_WATCHDOG) += davinci_wdt.o
# ARM26 Architecture
# AVR32 Architecture
obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
# BLACKFIN Architecture
obj-$(CONFIG_BFIN_WDT) += bfin_wdt.o
# CRIS Architecture
# FRV Architecture
# H8300 Architecture
# X86 (i386 + ia64 + x86_64) Architecture
obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o
@ -66,8 +80,22 @@ obj-$(CONFIG_W83977F_WDT) += w83977f_wdt.o
obj-$(CONFIG_MACHZ_WDT) += machzwd.o
obj-$(CONFIG_SBC_EPX_C3_WATCHDOG) += sbc_epx_c3.o
# PowerPC Architecture
# M32R Architecture
# M68K Architecture
# M68KNOMMU Architecture
# MIPS Architecture
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
# PARISC Architecture
# POWERPC Architecture
obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o
obj-$(CONFIG_MPC5200_WDT) += mpc5200_wdt.o
obj-$(CONFIG_83xx_WDT) += mpc83xx_wdt.o
obj-$(CONFIG_MV64X60_WDT) += mv64x60_wdt.o
obj-$(CONFIG_BOOKE_WDT) += booke_wdt.o
@ -75,17 +103,18 @@ obj-$(CONFIG_BOOKE_WDT) += booke_wdt.o
# PPC64 Architecture
obj-$(CONFIG_WATCHDOG_RTAS) += wdrtas.o
# MIPS Architecture
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
# S390 Architecture
# SUPERH Architecture
# SUPERH (sh + sh64) Architecture
obj-$(CONFIG_SH_WDT) += shwdt.o
# SPARC Architecture
# SPARC64 Architecture
# V850 Architecture
# XTENSA Architecture
# Architecture Independant
obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o

490
drivers/char/watchdog/bfin_wdt.c Normal file
View file

@ -0,0 +1,490 @@
/*
* Blackfin On-Chip Watchdog Driver
* Supports BF53[123]/BF53[467]/BF54[2489]/BF561
*
* Originally based on softdog.c
* Copyright 2006-2007 Analog Devices Inc.
* Copyright 2006-2007 Michele d'Amico
* Copyright 1996 Alan Cox <alan@redhat.com>
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Licensed under the GPL-2 or later.
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/fs.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/blackfin.h>
#include <asm/uaccess.h>
#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args)
#define stampit() stamp("here i am")
#define WATCHDOG_NAME "bfin-wdt"
#define PFX WATCHDOG_NAME ": "
/* The BF561 has two watchdogs (one per core), but since Linux
* only runs on core A, we'll just work with that one.
*/
#ifdef BF561_FAMILY
# define bfin_read_WDOG_CTL() bfin_read_WDOGA_CTL()
# define bfin_read_WDOG_CNT() bfin_read_WDOGA_CNT()
# define bfin_read_WDOG_STAT() bfin_read_WDOGA_STAT()
# define bfin_write_WDOG_CTL(x) bfin_write_WDOGA_CTL(x)
# define bfin_write_WDOG_CNT(x) bfin_write_WDOGA_CNT(x)
# define bfin_write_WDOG_STAT(x) bfin_write_WDOGA_STAT(x)
#endif
/* Bit in SWRST that indicates boot caused by watchdog */
#define SWRST_RESET_WDOG 0x4000
/* Bit in WDOG_CTL that indicates watchdog has expired (WDR0) */
#define WDOG_EXPIRED 0x8000
/* Masks for WDEV field in WDOG_CTL register */
#define ICTL_RESET 0x0
#define ICTL_NMI 0x2
#define ICTL_GPI 0x4
#define ICTL_NONE 0x6
#define ICTL_MASK 0x6
/* Masks for WDEN field in WDOG_CTL register */
#define WDEN_MASK 0x0FF0
#define WDEN_ENABLE 0x0000
#define WDEN_DISABLE 0x0AD0
/* some defaults */
#define WATCHDOG_TIMEOUT 20
static unsigned int timeout = WATCHDOG_TIMEOUT;
static int nowayout = WATCHDOG_NOWAYOUT;
static struct watchdog_info bfin_wdt_info;
static unsigned long open_check;
static char expect_close;
static spinlock_t bfin_wdt_spinlock = SPIN_LOCK_UNLOCKED;
/**
* bfin_wdt_keepalive - Keep the Userspace Watchdog Alive
*
* The Userspace watchdog got a KeepAlive: schedule the next timeout.
*/
static int bfin_wdt_keepalive(void)
{
stampit();
bfin_write_WDOG_STAT(0);
return 0;
}
/**
* bfin_wdt_stop - Stop the Watchdog
*
* Stops the on-chip watchdog.
*/
static int bfin_wdt_stop(void)
{
stampit();
bfin_write_WDOG_CTL(WDEN_DISABLE);
return 0;
}
/**
* bfin_wdt_start - Start the Watchdog
*
* Starts the on-chip watchdog. Automatically loads WDOG_CNT
* into WDOG_STAT for us.
*/
static int bfin_wdt_start(void)
{
stampit();
bfin_write_WDOG_CTL(WDEN_ENABLE | ICTL_RESET);
return 0;
}
/**
* bfin_wdt_running - Check Watchdog status
*
* See if the watchdog is running.
*/
static int bfin_wdt_running(void)
{
stampit();
return ((bfin_read_WDOG_CTL() & WDEN_MASK) != WDEN_DISABLE);
}
/**
* bfin_wdt_set_timeout - Set the Userspace Watchdog timeout
* @t: new timeout value (in seconds)
*
* Translate the specified timeout in seconds into System Clock
* terms which is what the on-chip Watchdog requires.
*/
static int bfin_wdt_set_timeout(unsigned long t)
{
u32 cnt;
unsigned long flags;
stampit();
cnt = t * get_sclk();
if (cnt < get_sclk()) {
printk(KERN_WARNING PFX "timeout value is too large\n");
return -EINVAL;
}
spin_lock_irqsave(&bfin_wdt_spinlock, flags);
{
int run = bfin_wdt_running();
bfin_wdt_stop();
bfin_write_WDOG_CNT(cnt);
if (run) bfin_wdt_start();
}
spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
timeout = t;
return 0;
}
/**
* bfin_wdt_open - Open the Device
* @inode: inode of device
* @file: file handle of device
*
* Watchdog device is opened and started.
*/
static int bfin_wdt_open(struct inode *inode, struct file *file)
{
stampit();
if (test_and_set_bit(0, &open_check))
return -EBUSY;
if (nowayout)
__module_get(THIS_MODULE);
bfin_wdt_keepalive();
bfin_wdt_start();
return nonseekable_open(inode, file);
}
/**
* bfin_wdt_close - Close the Device
* @inode: inode of device
* @file: file handle of device
*
* Watchdog device is closed and stopped.
*/
static int bfin_wdt_release(struct inode *inode, struct file *file)
{
stampit();
if (expect_close == 42) {
bfin_wdt_stop();
} else {
printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
bfin_wdt_keepalive();
}
expect_close = 0;
clear_bit(0, &open_check);
return 0;
}
/**
* bfin_wdt_write - Write to Device
* @file: file handle of device
* @buf: buffer to write
* @count: length of buffer
* @ppos: offset
*
* Pings the watchdog on write.
*/
static ssize_t bfin_wdt_write(struct file *file, const char __user *data,
size_t len, loff_t *ppos)
{
stampit();
if (len) {
if (!nowayout) {
size_t i;
/* In case it was set long ago */
expect_close = 0;
for (i = 0; i != len; i++) {
char c;
if (get_user(c, data + i))
return -EFAULT;
if (c == 'V')
expect_close = 42;
}
}
bfin_wdt_keepalive();
}
return len;
}
/**
* bfin_wdt_ioctl - Query Device
* @inode: inode of device
* @file: file handle of device
* @cmd: watchdog command
* @arg: argument
*
* Query basic information from the device or ping it, as outlined by the
* watchdog API.
*/
static int bfin_wdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
stampit();
switch (cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &bfin_wdt_info, sizeof(bfin_wdt_info)))
return -EFAULT;
else
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(!!(_bfin_swrst & SWRST_RESET_WDOG), p);
case WDIOC_KEEPALIVE:
bfin_wdt_keepalive();
return 0;
case WDIOC_SETTIMEOUT: {
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
if (bfin_wdt_set_timeout(new_timeout))
return -EINVAL;
}
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
case WDIOC_SETOPTIONS: {
unsigned long flags;
int options, ret = -EINVAL;
if (get_user(options, p))
return -EFAULT;
spin_lock_irqsave(&bfin_wdt_spinlock, flags);
if (options & WDIOS_DISABLECARD) {
bfin_wdt_stop();
ret = 0;
}
if (options & WDIOS_ENABLECARD) {
bfin_wdt_start();
ret = 0;
}
spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
return ret;
}
}
}
/**
* bfin_wdt_notify_sys - Notifier Handler
* @this: notifier block
* @code: notifier event
* @unused: unused
*
* Handles specific events, such as turning off the watchdog during a
* shutdown event.
*/
static int bfin_wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
stampit();
if (code == SYS_DOWN || code == SYS_HALT)
bfin_wdt_stop();
return NOTIFY_DONE;
}
#ifdef CONFIG_PM
static int state_before_suspend;
/**
* bfin_wdt_suspend - suspend the watchdog
* @pdev: device being suspended
* @state: requested suspend state
*
* Remember if the watchdog was running and stop it.
* TODO: is this even right? Doesn't seem to be any
* standard in the watchdog world ...
*/
static int bfin_wdt_suspend(struct platform_device *pdev, pm_message_t state)
{
stampit();
state_before_suspend = bfin_wdt_running();
bfin_wdt_stop();
return 0;
}
/**
* bfin_wdt_resume - resume the watchdog
* @pdev: device being resumed
*
* If the watchdog was running, turn it back on.
*/
static int bfin_wdt_resume(struct platform_device *pdev)
{
stampit();
if (state_before_suspend) {
bfin_wdt_set_timeout(timeout);
bfin_wdt_start();
}
return 0;
}
#else
# define bfin_wdt_suspend NULL
# define bfin_wdt_resume NULL
#endif
static struct platform_device bfin_wdt_device = {
.name = WATCHDOG_NAME,
.id = -1,
};
static struct platform_driver bfin_wdt_driver = {
.driver = {
.name = WATCHDOG_NAME,
.owner = THIS_MODULE,
},
.suspend = bfin_wdt_suspend,
.resume = bfin_wdt_resume,
};
static struct file_operations bfin_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = bfin_wdt_write,
.ioctl = bfin_wdt_ioctl,
.open = bfin_wdt_open,
.release = bfin_wdt_release,
};
static struct miscdevice bfin_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &bfin_wdt_fops,
};
static struct watchdog_info bfin_wdt_info = {
.identity = "Blackfin Watchdog",
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
};
static struct notifier_block bfin_wdt_notifier = {
.notifier_call = bfin_wdt_notify_sys,
};
/**
* bfin_wdt_init - Initialize module
*
* Registers the device and notifier handler. Actual device
* initialization is handled by bfin_wdt_open().
*/
static int __init bfin_wdt_init(void)
{
int ret;
stampit();
/* Check that the timeout value is within range */
if (bfin_wdt_set_timeout(timeout))
return -EINVAL;
/* Since this is an on-chip device and needs no board-specific
* resources, we'll handle all the platform device stuff here.
*/
ret = platform_device_register(&bfin_wdt_device);
if (ret)
return ret;
ret = platform_driver_probe(&bfin_wdt_driver, NULL);
if (ret)
return ret;
ret = register_reboot_notifier(&bfin_wdt_notifier);
if (ret) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&bfin_wdt_miscdev);
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&bfin_wdt_notifier);
return ret;
}
printk(KERN_INFO PFX "initialized: timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return 0;
}
/**
* bfin_wdt_exit - Deinitialize module
*
* Unregisters the device and notifier handler. Actual device
* deinitialization is handled by bfin_wdt_close().
*/
static void __exit bfin_wdt_exit(void)
{
misc_deregister(&bfin_wdt_miscdev);
unregister_reboot_notifier(&bfin_wdt_notifier);
}
module_init(bfin_wdt_init);
module_exit(bfin_wdt_exit);
MODULE_AUTHOR("Michele d'Amico, Mike Frysinger <vapier@gentoo.org>");
MODULE_DESCRIPTION("Blackfin Watchdog Device Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(timeout, uint, 0);
MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");

2
drivers/char/watchdog/booke_wdt.c
View file

@ -144,7 +144,7 @@ static int booke_wdt_open (struct inode *inode, struct file *file)
booke_wdt_period);
}
return 0;
return nonseekable_open(inode, file);
}
static const struct file_operations booke_wdt_fops = {

4
drivers/char/watchdog/cpu5wdt.c
View file

@ -162,6 +162,10 @@ static int cpu5wdt_ioctl(struct inode *inode, struct file *file, unsigned int cm
if ( copy_to_user(argp, &value, sizeof(int)) )
return -EFAULT;
break;
case WDIOC_GETBOOTSTATUS:
if ( copy_to_user(argp, &value, sizeof(int)) )
return -EFAULT;
break;
case WDIOC_GETSUPPORT:
if ( copy_to_user(argp, &ident, sizeof(ident)) )
return -EFAULT;

281
drivers/char/watchdog/davinci_wdt.c Normal file
View file

@ -0,0 +1,281 @@
/*
* drivers/char/watchdog/davinci_wdt.c
*
* Watchdog driver for DaVinci DM644x/DM646x processors
*
* Copyright (C) 2006 Texas Instruments.
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <asm/hardware.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#define MODULE_NAME "DAVINCI-WDT: "
#define DEFAULT_HEARTBEAT 60
#define MAX_HEARTBEAT 600 /* really the max margin is 264/27MHz*/
/* Timer register set definition */
#define PID12 (0x0)
#define EMUMGT (0x4)
#define TIM12 (0x10)
#define TIM34 (0x14)
#define PRD12 (0x18)
#define PRD34 (0x1C)
#define TCR (0x20)
#define TGCR (0x24)
#define WDTCR (0x28)
/* TCR bit definitions */
#define ENAMODE12_DISABLED (0 << 6)
#define ENAMODE12_ONESHOT (1 << 6)
#define ENAMODE12_PERIODIC (2 << 6)
/* TGCR bit definitions */
#define TIM12RS_UNRESET (1 << 0)
#define TIM34RS_UNRESET (1 << 1)
#define TIMMODE_64BIT_WDOG (2 << 2)
/* WDTCR bit definitions */
#define WDEN (1 << 14)
#define WDFLAG (1 << 15)
#define WDKEY_SEQ0 (0xa5c6 << 16)
#define WDKEY_SEQ1 (0xda7e << 16)
static int heartbeat = DEFAULT_HEARTBEAT;
static spinlock_t io_lock;
static unsigned long wdt_status;
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
#define WDT_REGION_INITED 2
#define WDT_DEVICE_INITED 3
static struct resource *wdt_mem;
static void __iomem *wdt_base;
static void wdt_service(void)
{
spin_lock(&io_lock);
/* put watchdog in service state */
davinci_writel(WDKEY_SEQ0, wdt_base + WDTCR);
/* put watchdog in active state */
davinci_writel(WDKEY_SEQ1, wdt_base + WDTCR);
spin_unlock(&io_lock);
}
static void wdt_enable(void)
{
u32 tgcr;
u32 timer_margin;
spin_lock(&io_lock);
/* disable, internal clock source */
davinci_writel(0, wdt_base + TCR);
/* reset timer, set mode to 64-bit watchdog, and unreset */
davinci_writel(0, wdt_base + TGCR);
tgcr = TIMMODE_64BIT_WDOG | TIM12RS_UNRESET | TIM34RS_UNRESET;
davinci_writel(tgcr, wdt_base + TGCR);
/* clear counter regs */
davinci_writel(0, wdt_base + TIM12);
davinci_writel(0, wdt_base + TIM34);
/* set timeout period */
timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) & 0xffffffff);
davinci_writel(timer_margin, wdt_base + PRD12);
timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) >> 32);
davinci_writel(timer_margin, wdt_base + PRD34);
/* enable run continuously */
davinci_writel(ENAMODE12_PERIODIC, wdt_base + TCR);
/* Once the WDT is in pre-active state write to
* TIM12, TIM34, PRD12, PRD34, TCR, TGCR, WDTCR are
* write protected (except for the WDKEY field)
*/
/* put watchdog in pre-active state */
davinci_writel(WDKEY_SEQ0 | WDEN, wdt_base + WDTCR);
/* put watchdog in active state */
davinci_writel(WDKEY_SEQ1 | WDEN, wdt_base + WDTCR);
spin_unlock(&io_lock);
}
static int davinci_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(WDT_IN_USE, &wdt_status))
return -EBUSY;
wdt_enable();
return nonseekable_open(inode, file);
}
static ssize_t
davinci_wdt_write(struct file *file, const char *data, size_t len,
loff_t *ppos)
{
if (len)
wdt_service();
return len;
}
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING,
.identity = "DaVinci Watchdog",
};
static int
davinci_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
int ret = -ENOTTY;
switch (cmd) {
case WDIOC_GETSUPPORT:
ret = copy_to_user((struct watchdog_info *)arg, &ident,
sizeof(ident)) ? -EFAULT : 0;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
ret = put_user(0, (int *)arg);
break;
case WDIOC_GETTIMEOUT:
ret = put_user(heartbeat, (int *)arg);
break;
case WDIOC_KEEPALIVE:
wdt_service();
ret = 0;
break;
}
return ret;
}
static int davinci_wdt_release(struct inode *inode, struct file *file)
{
wdt_service();
clear_bit(WDT_IN_USE, &wdt_status);
return 0;
}
static const struct file_operations davinci_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = davinci_wdt_write,
.ioctl = davinci_wdt_ioctl,
.open = davinci_wdt_open,
.release = davinci_wdt_release,
};
static struct miscdevice davinci_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &davinci_wdt_fops,
};
static int davinci_wdt_probe(struct platform_device *pdev)
{
int ret = 0, size;
struct resource *res;
spin_lock_init(&io_lock);
if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
heartbeat = DEFAULT_HEARTBEAT;
printk(KERN_INFO MODULE_NAME
"DaVinci Watchdog Timer: heartbeat %d sec\n", heartbeat);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
printk(KERN_INFO MODULE_NAME
"failed to get memory region resource\n");
return -ENOENT;
}
size = res->end - res->start + 1;
wdt_mem = request_mem_region(res->start, size, pdev->name);
if (wdt_mem == NULL) {
printk(KERN_INFO MODULE_NAME "failed to get memory region\n");
return -ENOENT;
}
wdt_base = (void __iomem *)(res->start);
ret = misc_register(&davinci_wdt_miscdev);
if (ret < 0) {
printk(KERN_ERR MODULE_NAME "cannot register misc device\n");
release_resource(wdt_mem);
kfree(wdt_mem);
} else {
set_bit(WDT_DEVICE_INITED, &wdt_status);
}
return ret;
}
static int davinci_wdt_remove(struct platform_device *pdev)
{
misc_deregister(&davinci_wdt_miscdev);
if (wdt_mem) {
release_resource(wdt_mem);
kfree(wdt_mem);
wdt_mem = NULL;
}
return 0;
}
static struct platform_driver platform_wdt_driver = {
.driver = {
.name = "watchdog",
},
.probe = davinci_wdt_probe,
.remove = davinci_wdt_remove,
};
static int __init davinci_wdt_init(void)
{
return platform_driver_register(&platform_wdt_driver);
}
static void __exit davinci_wdt_exit(void)
{
return platform_driver_unregister(&platform_wdt_driver);
}
module_init(davinci_wdt_init);
module_exit(davinci_wdt_exit);
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("DaVinci Watchdog Driver");
module_param(heartbeat, int, 0);
MODULE_PARM_DESC(heartbeat,
"Watchdog heartbeat period in seconds from 1 to "
__MODULE_STRING(MAX_HEARTBEAT) ", default "
__MODULE_STRING(DEFAULT_HEARTBEAT));
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

38
drivers/char/watchdog/iTCO_wdt.c
View file

@ -39,7 +39,12 @@
* 82801HR (ICH8R) : document number 313056-002, 313057-004,
* 82801HH (ICH8DH) : document number 313056-002, 313057-004,
* 82801HO (ICH8DO) : document number 313056-002, 313057-004,
* 6300ESB (6300ESB) : document number 300641-003
* 82801IB (ICH9) : document number 316972-001, 316973-001,
* 82801IR (ICH9R) : document number 316972-001, 316973-001,
* 82801IH (ICH9DH) : document number 316972-001, 316973-001,
* 6300ESB (6300ESB) : document number 300641-003, 300884-010,
* 631xESB (631xESB) : document number 313082-001, 313075-005,
* 632xESB (632xESB) : document number 313082-001, 313075-005
*/
/*
@ -48,8 +53,8 @@
/* Module and version information */
#define DRV_NAME "iTCO_wdt"
#define DRV_VERSION "1.01"
#define DRV_RELDATE "21-Jan-2007"
#define DRV_VERSION "1.02"
#define DRV_RELDATE "26-Jul-2007"
#define PFX DRV_NAME ": "
/* Includes */
@ -92,6 +97,10 @@ enum iTCO_chipsets {
TCO_ICH8, /* ICH8 & ICH8R */
TCO_ICH8DH, /* ICH8DH */
TCO_ICH8DO, /* ICH8DO */
TCO_ICH9, /* ICH9 */
TCO_ICH9R, /* ICH9R */
TCO_ICH9DH, /* ICH9DH */
TCO_631XESB, /* 631xESB/632xESB */
};
static struct {
@ -118,6 +127,10 @@ static struct {
{"ICH8 or ICH8R", 2},
{"ICH8DH", 2},
{"ICH8DO", 2},
{"ICH9", 2},
{"ICH9R", 2},
{"ICH9DH", 2},
{"631xESB/632xESB", 2},
{NULL,0}
};
@ -148,6 +161,25 @@ static struct pci_device_id iTCO_wdt_pci_tbl[] = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8 },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8DH },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8DO },
{ PCI_VENDOR_ID_INTEL, 0x2918, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH9 },
{ PCI_VENDOR_ID_INTEL, 0x2916, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH9R },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH9DH },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2671, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2672, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2673, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2674, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2675, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2676, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2677, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2678, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x2679, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ PCI_VENDOR_ID_INTEL, 0x267f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_631XESB },
{ 0, }, /* End of list */
};
MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl);

1
drivers/char/watchdog/machzwd.c
View file

@ -321,6 +321,7 @@ static int zf_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:

5
drivers/char/watchdog/mixcomwd.c
View file

@ -215,6 +215,11 @@ static int mixcomwd_ioctl(struct inode *inode, struct file *file,
return -EFAULT;
}
break;
case WDIOC_GETBOOTSTATUS:
if (copy_to_user(p, &status, sizeof(int))) {
return -EFAULT;
}
break;
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident))) {
return -EFAULT;

286
drivers/char/watchdog/mpc5200_wdt.c Normal file
View file

@ -0,0 +1,286 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <asm/of_platform.h>
#include <asm/uaccess.h>
#include <asm/mpc52xx.h>
#define GPT_MODE_WDT (1<<15)
#define GPT_MODE_CE (1<<12)
#define GPT_MODE_MS_TIMER (0x4)
struct mpc5200_wdt {
unsigned count; /* timer ticks before watchdog kicks in */
long ipb_freq;
struct miscdevice miscdev;
struct resource mem;
struct mpc52xx_gpt __iomem *regs;
spinlock_t io_lock;
};
/* is_active stores wether or not the /dev/watchdog device is opened */
static unsigned long is_active;
/* misc devices don't provide a way, to get back to 'dev' or 'miscdev' from
* file operations, which sucks. But there can be max 1 watchdog anyway, so...
*/
static struct mpc5200_wdt *wdt_global;
/* helper to calculate timeout in timer counts */
static void mpc5200_wdt_set_timeout(struct mpc5200_wdt *wdt, int timeout)
{
/* use biggest prescaler of 64k */
wdt->count = (wdt->ipb_freq + 0xffff) / 0x10000 * timeout;
if (wdt->count > 0xffff)
wdt->count = 0xffff;
}
/* return timeout in seconds (calculated from timer count) */
static int mpc5200_wdt_get_timeout(struct mpc5200_wdt *wdt)
{
return wdt->count * 0x10000 / wdt->ipb_freq;
}
/* watchdog operations */
static int mpc5200_wdt_start(struct mpc5200_wdt *wdt)
{
spin_lock(&wdt->io_lock);
/* disable */
out_be32(&wdt->regs->mode, 0);
/* set timeout, with maximum prescaler */
out_be32(&wdt->regs->count, 0x0 | wdt->count);
/* enable watchdog */
out_be32(&wdt->regs->mode, GPT_MODE_CE | GPT_MODE_WDT | GPT_MODE_MS_TIMER);
spin_unlock(&wdt->io_lock);
return 0;
}
static int mpc5200_wdt_ping(struct mpc5200_wdt *wdt)
{
spin_lock(&wdt->io_lock);
/* writing A5 to OCPW resets the watchdog */
out_be32(&wdt->regs->mode, 0xA5000000 | (0xffffff & in_be32(&wdt->regs->mode)));
spin_unlock(&wdt->io_lock);
return 0;
}
static int mpc5200_wdt_stop(struct mpc5200_wdt *wdt)
{
spin_lock(&wdt->io_lock);
/* disable */
out_be32(&wdt->regs->mode, 0);
spin_unlock(&wdt->io_lock);
return 0;
}
/* file operations */
static ssize_t mpc5200_wdt_write(struct file *file, const char *data,
size_t len, loff_t *ppos)
{
struct mpc5200_wdt *wdt = file->private_data;
mpc5200_wdt_ping(wdt);
return 0;
}
static struct watchdog_info mpc5200_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = "mpc5200 watchdog on GPT0",
};
static int mpc5200_wdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct mpc5200_wdt *wdt = file->private_data;
int __user *data = (int __user *)arg;
int timeout;
int ret = 0;
switch (cmd) {
case WDIOC_GETSUPPORT:
ret = copy_to_user(data, &mpc5200_wdt_info,
sizeof(mpc5200_wdt_info));
if (ret)
ret = -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
ret = put_user(0, data);
break;
case WDIOC_KEEPALIVE:
mpc5200_wdt_ping(wdt);
break;
case WDIOC_SETTIMEOUT:
ret = get_user(timeout, data);
if (ret)
break;
mpc5200_wdt_set_timeout(wdt, timeout);
mpc5200_wdt_start(wdt);
/* fall through and return the timeout */
case WDIOC_GETTIMEOUT:
timeout = mpc5200_wdt_get_timeout(wdt);
ret = put_user(timeout, data);
break;
default:
ret = -ENOTTY;
}
return ret;
}
static int mpc5200_wdt_open(struct inode *inode, struct file *file)
{
/* /dev/watchdog can only be opened once */
if (test_and_set_bit(0, &is_active))
return -EBUSY;
/* Set and activate the watchdog */
mpc5200_wdt_set_timeout(wdt_global, 30);
mpc5200_wdt_start(wdt_global);
file->private_data = wdt_global;
return nonseekable_open(inode, file);
}
static int mpc5200_wdt_release(struct inode *inode, struct file *file)
{
#if WATCHDOG_NOWAYOUT == 0
struct mpc5200_wdt *wdt = file->private_data;
mpc5200_wdt_stop(wdt);
wdt->count = 0; /* == disabled */
#endif
clear_bit(0, &is_active);
return 0;
}
static struct file_operations mpc5200_wdt_fops = {
.owner = THIS_MODULE,
.write = mpc5200_wdt_write,
.ioctl = mpc5200_wdt_ioctl,
.open = mpc5200_wdt_open,
.release = mpc5200_wdt_release,
};
/* module operations */
static int mpc5200_wdt_probe(struct of_device *op, const struct of_device_id *match)
{
struct mpc5200_wdt *wdt;
int err;
const void *has_wdt;
int size;
has_wdt = of_get_property(op->node, "has-wdt", NULL);
if (!has_wdt)
return -ENODEV;
wdt = kzalloc(sizeof(*wdt), GFP_KERNEL);
if (!wdt)
return -ENOMEM;
wdt->ipb_freq = mpc52xx_find_ipb_freq(op->node);
err = of_address_to_resource(op->node, 0, &wdt->mem);
if (err)
goto out_free;
size = wdt->mem.end - wdt->mem.start + 1;
if (!request_mem_region(wdt->mem.start, size, "mpc5200_wdt")) {
err = -ENODEV;
goto out_free;
}
wdt->regs = ioremap(wdt->mem.start, size);
if (!wdt->regs) {
err = -ENODEV;
goto out_release;
}
dev_set_drvdata(&op->dev, wdt);
spin_lock_init(&wdt->io_lock);
wdt->miscdev = (struct miscdevice) {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &mpc5200_wdt_fops,
.parent = &op->dev,
};
wdt_global = wdt;
err = misc_register(&wdt->miscdev);
if (!err)
return 0;
iounmap(wdt->regs);
out_release:
release_mem_region(wdt->mem.start, size);
out_free:
kfree(wdt);
return err;
}
static int mpc5200_wdt_remove(struct of_device *op)
{
struct mpc5200_wdt *wdt = dev_get_drvdata(&op->dev);
mpc5200_wdt_stop(wdt);
misc_deregister(&wdt->miscdev);
iounmap(wdt->regs);
release_mem_region(wdt->mem.start, wdt->mem.end - wdt->mem.start + 1);
kfree(wdt);
return 0;
}
static int mpc5200_wdt_suspend(struct of_device *op, pm_message_t state)
{
struct mpc5200_wdt *wdt = dev_get_drvdata(&op->dev);
mpc5200_wdt_stop(wdt);
return 0;
}
static int mpc5200_wdt_resume(struct of_device *op)
{
struct mpc5200_wdt *wdt = dev_get_drvdata(&op->dev);
if (wdt->count)
mpc5200_wdt_start(wdt);
return 0;
}
static int mpc5200_wdt_shutdown(struct of_device *op)
{
struct mpc5200_wdt *wdt = dev_get_drvdata(&op->dev);
mpc5200_wdt_stop(wdt);
return 0;
}
static struct of_device_id mpc5200_wdt_match[] = {
{ .compatible = "mpc5200-gpt", },
{},
};
static struct of_platform_driver mpc5200_wdt_driver = {
.owner = THIS_MODULE,
.name = "mpc5200-gpt-wdt",
.match_table = mpc5200_wdt_match,
.probe = mpc5200_wdt_probe,
.remove = mpc5200_wdt_remove,
.suspend = mpc5200_wdt_suspend,
.resume = mpc5200_wdt_resume,
.shutdown = mpc5200_wdt_shutdown,
};
static int __init mpc5200_wdt_init(void)
{
return of_register_platform_driver(&mpc5200_wdt_driver);
}
static void __exit mpc5200_wdt_exit(void)
{
of_unregister_platform_driver(&mpc5200_wdt_driver);
}
module_init(mpc5200_wdt_init);
module_exit(mpc5200_wdt_exit);
MODULE_AUTHOR("Domen Puncer <domen.puncer@telargo.com>");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

3
drivers/char/watchdog/mpc83xx_wdt.c
View file

@ -119,6 +119,9 @@ static int mpc83xx_wdt_ioctl(struct inode *inode, struct file *file,
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
mpc83xx_wdt_keepalive();
return 0;

2
drivers/char/watchdog/mpc8xx_wdt.c
View file

@ -57,7 +57,7 @@ static int mpc8xx_wdt_open(struct inode *inode, struct file *file)
m8xx_wdt_reset();
mpc8xx_wdt_handler_disable();
return 0;
return nonseekable_open(inode, file);
}
static int mpc8xx_wdt_release(struct inode *inode, struct file *file)

1
drivers/char/watchdog/mtx-1_wdt.c
View file

@ -143,6 +143,7 @@ static int mtx1_wdt_ioctl(struct inode *inode, struct file *file, unsigned int c
mtx1_wdt_reset();
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
if ( copy_to_user(argp, &value, sizeof(int)) )
return -EFAULT;
break;

222
drivers/char/watchdog/mv64x60_wdt.c
View file

@ -23,83 +23,126 @@
#include <linux/watchdog.h>
#include <linux/platform_device.h>
#include <asm/mv64x60.h>
#include <linux/mv643xx.h>
#include <asm/uaccess.h>
#include <asm/io.h>
/* MV64x60 WDC (config) register access definitions */
#define MV64x60_WDC_CTL1_MASK (3 << 24)
#define MV64x60_WDC_CTL1(val) ((val & 3) << 24)
#define MV64x60_WDC_CTL2_MASK (3 << 26)
#define MV64x60_WDC_CTL2(val) ((val & 3) << 26)
#define MV64x60_WDT_WDC_OFFSET 0
/*
* The watchdog configuration register contains a pair of 2-bit fields,
* 1. a reload field, bits 27-26, which triggers a reload of
* the countdown register, and
* 2. an enable field, bits 25-24, which toggles between
* enabling and disabling the watchdog timer.
* Bit 31 is a read-only field which indicates whether the
* watchdog timer is currently enabled.
*
* The low 24 bits contain the timer reload value.
*/
#define MV64x60_WDC_ENABLE_SHIFT 24
#define MV64x60_WDC_SERVICE_SHIFT 26
#define MV64x60_WDC_ENABLED_SHIFT 31
#define MV64x60_WDC_ENABLED_TRUE 1
#define MV64x60_WDC_ENABLED_FALSE 0
/* Flags bits */
#define MV64x60_WDOG_FLAG_OPENED 0
#define MV64x60_WDOG_FLAG_ENABLED 1
static unsigned long wdt_flags;
static int wdt_status;
static void __iomem *mv64x60_regs;
static void __iomem *mv64x60_wdt_regs;
static int mv64x60_wdt_timeout;
static int mv64x60_wdt_count;
static unsigned int bus_clk;
static char expect_close;
static DEFINE_SPINLOCK(mv64x60_wdt_spinlock);
static void mv64x60_wdt_reg_write(u32 val)
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static int mv64x60_wdt_toggle_wdc(int enabled_predicate, int field_shift)
{
/* Allow write only to CTL1 / CTL2 fields, retaining values in
* other fields.
*/
u32 data = readl(mv64x60_regs + MV64x60_WDT_WDC);
data &= ~(MV64x60_WDC_CTL1_MASK | MV64x60_WDC_CTL2_MASK);
data |= val;
writel(data, mv64x60_regs + MV64x60_WDT_WDC);
u32 data;
u32 enabled;
int ret = 0;
spin_lock(&mv64x60_wdt_spinlock);
data = readl(mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET);
enabled = (data >> MV64x60_WDC_ENABLED_SHIFT) & 1;
/* only toggle the requested field if enabled state matches predicate */
if ((enabled ^ enabled_predicate) == 0) {
/* We write a 1, then a 2 -- to the appropriate field */
data = (1 << field_shift) | mv64x60_wdt_count;
writel(data, mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET);
data = (2 << field_shift) | mv64x60_wdt_count;
writel(data, mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET);
ret = 1;
}
spin_unlock(&mv64x60_wdt_spinlock);
return ret;
}
static void mv64x60_wdt_service(void)
{
/* Write 01 followed by 10 to CTL2 */
mv64x60_wdt_reg_write(MV64x60_WDC_CTL2(0x01));
mv64x60_wdt_reg_write(MV64x60_WDC_CTL2(0x02));
}
static void mv64x60_wdt_handler_disable(void)
{
if (test_and_clear_bit(MV64x60_WDOG_FLAG_ENABLED, &wdt_flags)) {
/* Write 01 followed by 10 to CTL1 */
mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x01));
mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x02));
printk(KERN_NOTICE "mv64x60_wdt: watchdog deactivated\n");
}
mv64x60_wdt_toggle_wdc(MV64x60_WDC_ENABLED_TRUE,
MV64x60_WDC_SERVICE_SHIFT);
}
static void mv64x60_wdt_handler_enable(void)
{
if (!test_and_set_bit(MV64x60_WDOG_FLAG_ENABLED, &wdt_flags)) {
/* Write 01 followed by 10 to CTL1 */
mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x01));
mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x02));
if (mv64x60_wdt_toggle_wdc(MV64x60_WDC_ENABLED_FALSE,
MV64x60_WDC_ENABLE_SHIFT)) {
mv64x60_wdt_service();
printk(KERN_NOTICE "mv64x60_wdt: watchdog activated\n");
}
}
static void mv64x60_wdt_handler_disable(void)
{
if (mv64x60_wdt_toggle_wdc(MV64x60_WDC_ENABLED_TRUE,
MV64x60_WDC_ENABLE_SHIFT))
printk(KERN_NOTICE "mv64x60_wdt: watchdog deactivated\n");
}
static void mv64x60_wdt_set_timeout(unsigned int timeout)
{
/* maximum bus cycle count is 0xFFFFFFFF */
if (timeout > 0xFFFFFFFF / bus_clk)
timeout = 0xFFFFFFFF / bus_clk;
mv64x60_wdt_count = timeout * bus_clk >> 8;
mv64x60_wdt_timeout = timeout;
}
static int mv64x60_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(MV64x60_WDOG_FLAG_OPENED, &wdt_flags))
return -EBUSY;
mv64x60_wdt_service();
if (nowayout)
__module_get(THIS_MODULE);
mv64x60_wdt_handler_enable();
nonseekable_open(inode, file);
return 0;
return nonseekable_open(inode, file);
}
static int mv64x60_wdt_release(struct inode *inode, struct file *file)
{
mv64x60_wdt_service();
#if !defined(CONFIG_WATCHDOG_NOWAYOUT)
mv64x60_wdt_handler_disable();
#endif
if (expect_close == 42)
mv64x60_wdt_handler_disable();
else {
printk(KERN_CRIT
"mv64x60_wdt: unexpected close, not stopping timer!\n");
mv64x60_wdt_service();
}
expect_close = 0;
clear_bit(MV64x60_WDOG_FLAG_OPENED, &wdt_flags);
@ -109,8 +152,22 @@ static int mv64x60_wdt_release(struct inode *inode, struct file *file)
static ssize_t mv64x60_wdt_write(struct file *file, const char __user *data,
size_t len, loff_t * ppos)
{
if (len)
if (len) {
if (!nowayout) {
size_t i;
expect_close = 0;
for (i = 0; i != len; i++) {
char c;
if(get_user(c, data + i))
return -EFAULT;
if (c == 'V')
expect_close = 42;
}
}
mv64x60_wdt_service();
}
return len;
}
@ -119,9 +176,12 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
int timeout;
int options;
void __user *argp = (void __user *)arg;
static struct watchdog_info info = {
.options = WDIOF_KEEPALIVEPING,
.options = WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE |
WDIOF_KEEPALIVEPING,
.firmware_version = 0,
.identity = "MV64x60 watchdog",
};
@ -143,7 +203,15 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
return -EOPNOTSUPP;
case WDIOC_SETOPTIONS:
return -EOPNOTSUPP;
if (get_user(options, (int __user *)argp))
return -EFAULT;
if (options & WDIOS_DISABLECARD)
mv64x60_wdt_handler_disable();
if (options & WDIOS_ENABLECARD)
mv64x60_wdt_handler_enable();
break;
case WDIOC_KEEPALIVE:
mv64x60_wdt_service();
@ -151,11 +219,13 @@ static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
break;
case WDIOC_SETTIMEOUT:
return -EOPNOTSUPP;
if (get_user(timeout, (int __user *)argp))
return -EFAULT;
mv64x60_wdt_set_timeout(timeout);
/* Fall through */
case WDIOC_GETTIMEOUT:
timeout = mv64x60_wdt_timeout * HZ;
if (put_user(timeout, (int __user *)argp))
if (put_user(mv64x60_wdt_timeout, (int __user *)argp))
return -EFAULT;
break;
@ -184,18 +254,33 @@ static struct miscdevice mv64x60_wdt_miscdev = {
static int __devinit mv64x60_wdt_probe(struct platform_device *dev)
{
struct mv64x60_wdt_pdata *pdata = dev->dev.platform_data;
int bus_clk = 133;
struct resource *r;
int timeout = 10;
mv64x60_wdt_timeout = 10;
bus_clk = 133; /* in MHz */
if (pdata) {
mv64x60_wdt_timeout = pdata->timeout;
timeout = pdata->timeout;
bus_clk = pdata->bus_clk;
}
mv64x60_regs = mv64x60_get_bridge_vbase();
/* Since bus_clk is truncated MHz, actual frequency could be
* up to 1MHz higher. Round up, since it's better to time out
* too late than too soon.
*/
bus_clk++;
bus_clk *= 1000000; /* convert to Hz */
writel((mv64x60_wdt_timeout * (bus_clk * 1000000)) >> 8,
mv64x60_regs + MV64x60_WDT_WDC);
r = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!r)
return -ENODEV;
mv64x60_wdt_regs = ioremap(r->start, r->end - r->start + 1);
if (mv64x60_wdt_regs == NULL)
return -ENOMEM;
mv64x60_wdt_set_timeout(timeout);
mv64x60_wdt_handler_disable(); /* in case timer was already running */
return misc_register(&mv64x60_wdt_miscdev);
}
@ -204,9 +289,10 @@ static int __devexit mv64x60_wdt_remove(struct platform_device *dev)
{
misc_deregister(&mv64x60_wdt_miscdev);
mv64x60_wdt_service();
mv64x60_wdt_handler_disable();
iounmap(mv64x60_wdt_regs);
return 0;
}
@ -219,40 +305,16 @@ static struct platform_driver mv64x60_wdt_driver = {
},
};
static struct platform_device *mv64x60_wdt_dev;
static int __init mv64x60_wdt_init(void)
{
int ret;
printk(KERN_INFO "MV64x60 watchdog driver\n");
mv64x60_wdt_dev = platform_device_alloc(MV64x60_WDT_NAME, -1);
if (!mv64x60_wdt_dev) {
ret = -ENOMEM;
goto out;
}
ret = platform_device_add(mv64x60_wdt_dev);
if (ret) {
platform_device_put(mv64x60_wdt_dev);
goto out;
}
ret = platform_driver_register(&mv64x60_wdt_driver);
if (ret) {
platform_device_unregister(mv64x60_wdt_dev);
goto out;
}
out:
return ret;
return platform_driver_register(&mv64x60_wdt_driver);
}
static void __exit mv64x60_wdt_exit(void)
{
platform_driver_unregister(&mv64x60_wdt_driver);
platform_device_unregister(mv64x60_wdt_dev);
}
module_init(mv64x60_wdt_init);

4
drivers/char/watchdog/omap_wdt.c
View file

@ -142,7 +142,7 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
omap_wdt_set_timeout();
omap_wdt_enable();
return 0;
return nonseekable_open(inode, file);
}
static int omap_wdt_release(struct inode *inode, struct file *file)
@ -197,7 +197,7 @@ omap_wdt_ioctl(struct inode *inode, struct file *file,
switch (cmd) {
default:
return -ENOIOCTLCMD;
return -ENOTTY;
case WDIOC_GETSUPPORT:
return copy_to_user((struct watchdog_info __user *)arg, &ident,
sizeof(ident));

6
drivers/char/watchdog/s3c2410_wdt.c
View file

@ -52,10 +52,10 @@
#include <asm/arch/map.h>
#undef S3C24XX_VA_WATCHDOG
#define S3C24XX_VA_WATCHDOG (0)
#undef S3C_VA_WATCHDOG
#define S3C_VA_WATCHDOG (0)
#include <asm/arch/regs-watchdog.h>
#include <asm/plat-s3c/regs-watchdog.h>
#define PFX "s3c2410-wdt: "

3
drivers/char/watchdog/sa1100_wdt.c
View file

@ -45,7 +45,6 @@ static int boot_status;
*/
static int sa1100dog_open(struct inode *inode, struct file *file)
{
nonseekable_open(inode, file);
if (test_and_set_bit(1,&sa1100wdt_users))
return -EBUSY;
@ -54,7 +53,7 @@ static int sa1100dog_open(struct inode *inode, struct file *file)
OSSR = OSSR_M3;
OWER = OWER_WME;
OIER |= OIER_E3;
return 0;
return nonseekable_open(inode, file);
}
/*

4
drivers/char/watchdog/sbc60xxwdt.c
View file

@ -191,8 +191,6 @@ static ssize_t fop_write(struct file * file, const char __user * buf, size_t cou
static int fop_open(struct inode * inode, struct file * file)
{
nonseekable_open(inode, file);
/* Just in case we're already talking to someone... */
if(test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
@ -202,7 +200,7 @@ static int fop_open(struct inode * inode, struct file * file)
/* Good, fire up the show */
wdt_startup();
return 0;
return nonseekable_open(inode, file);
}
static int fop_close(struct inode * inode, struct file * file)

4
drivers/char/watchdog/sc1200wdt.c
View file

@ -150,8 +150,6 @@ static inline int sc1200wdt_status(void)
static int sc1200wdt_open(struct inode *inode, struct file *file)
{
nonseekable_open(inode, file);
/* allow one at a time */
if (down_trylock(&open_sem))
return -EBUSY;
@ -162,7 +160,7 @@ static int sc1200wdt_open(struct inode *inode, struct file *file)
sc1200wdt_start();
printk(KERN_INFO PFX "Watchdog enabled, timeout = %d min(s)", timeout);
return 0;
return nonseekable_open(inode, file);
}

4
drivers/char/watchdog/sc520_wdt.c
View file

@ -248,8 +248,6 @@ static ssize_t fop_write(struct file * file, const char __user * buf, size_t cou
static int fop_open(struct inode * inode, struct file * file)
{
nonseekable_open(inode, file);
/* Just in case we're already talking to someone... */
if(test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
@ -258,7 +256,7 @@ static int fop_open(struct inode * inode, struct file * file)
/* Good, fire up the show */
wdt_startup();
return 0;
return nonseekable_open(inode, file);
}
static int fop_close(struct inode * inode, struct file * file)

24
drivers/char/watchdog/w83627hf_wdt.c
View file

@ -4,7 +4,7 @@
* (c) Copyright 2007 Vlad Drukker <vlad@storewiz.com>
* added support for W83627THF.
*
* (c) Copyright 2003 Pádraig Brady <P@draigBrady.com>
* (c) Copyright 2003,2007 Pádraig Brady <P@draigBrady.com>
*
* Based on advantechwdt.c which is based on wdt.c.
* Original copyright messages:
@ -42,7 +42,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
#define WATCHDOG_NAME "w83627hf/thf WDT"
#define WATCHDOG_NAME "w83627hf/thf/hg WDT"
#define PFX WATCHDOG_NAME ": "
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
@ -57,7 +57,7 @@ MODULE_PARM_DESC(wdt_io, "w83627hf/thf WDT io port (default 0x2E)");
static int timeout = WATCHDOG_TIMEOUT; /* in seconds */
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=63, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=255, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
@ -78,9 +78,9 @@ w83627hf_select_wd_register(void)
outb_p(0x87, WDT_EFER); /* Enter extended function mode */
outb_p(0x87, WDT_EFER); /* Again according to manual */
outb(0x20, WDT_EFER); /* check chip version */
outb(0x20, WDT_EFER); /* check chip version */
c = inb(WDT_EFDR);
if (c == 0x82) { /* W83627THF */
if (c == 0x82) { /* W83627THF */
outb_p(0x2b, WDT_EFER); /* select GPIO3 */
c = ((inb_p(WDT_EFDR) & 0xf7) | 0x04); /* select WDT0 */
outb_p(0x2b, WDT_EFER);
@ -114,11 +114,17 @@ w83627hf_init(void)
printk (KERN_INFO PFX "Watchdog already running. Resetting timeout to %d sec\n", timeout);
outb_p(timeout, WDT_EFDR); /* Write back to CRF6 */
}
outb_p(0xF5, WDT_EFER); /* Select CRF5 */
t=inb_p(WDT_EFDR); /* read CRF5 */
t&=~0x0C; /* set second mode & disable keyboard turning off watchdog */
outb_p(t, WDT_EFDR); /* Write back to CRF5 */
outb_p(0xF7, WDT_EFER); /* Select CRF7 */
t=inb_p(WDT_EFDR); /* read CRF7 */
t&=~0xC0; /* disable keyboard & mouse turning off watchdog */
outb_p(t, WDT_EFDR); /* Write back to CRF7 */
w83627hf_unselect_wd_register();
}
@ -126,7 +132,7 @@ static void
wdt_ctrl(int timeout)
{
spin_lock(&io_lock);
w83627hf_select_wd_register();
outb_p(0xF6, WDT_EFER); /* Select CRF6 */
@ -154,7 +160,7 @@ wdt_disable(void)
static int
wdt_set_heartbeat(int t)
{
if ((t < 1) || (t > 63))
if ((t < 1) || (t > 255))
return -EINVAL;
timeout = t;
@ -324,11 +330,11 @@ wdt_init(void)
spin_lock_init(&io_lock);
printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF Super I/O chip initialising.\n");
printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF/HG Super I/O chip initialising.\n");
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
printk (KERN_INFO PFX "timeout value must be 1<=timeout<=63, using %d\n",
printk (KERN_INFO PFX "timeout value must be 1<=timeout<=255, using %d\n",
WATCHDOG_TIMEOUT);
}

8
include/asm-ppc/mv64x60.h
View file

@ -120,14 +120,6 @@ extern spinlock_t mv64x60_lock;
#define MV64x60_64BIT_WIN_COUNT 24
/* Watchdog Platform Device, Driver Data */
#define MV64x60_WDT_NAME "wdt"
struct mv64x60_wdt_pdata {
int timeout; /* watchdog expiry in seconds, default 10 */
int bus_clk; /* bus clock in MHz, default 133 */
};
/*
* Define a structure that's used to pass in config information to the
* core routines.

8
include/linux/mv643xx.h
View file

@ -1302,4 +1302,12 @@ struct mv643xx_eth_platform_data {
u8 mac_addr[6]; /* mac address if non-zero*/
};
/* Watchdog Platform Device, Driver Data */
#define MV64x60_WDT_NAME "mv64x60_wdt"
struct mv64x60_wdt_pdata {
int timeout; /* watchdog expiry in seconds, default 10 */
int bus_clk; /* bus clock in MHz, default 133 */
};
#endif /* __ASM_MV643XX_H */