Merge commit 'v2.6.34-rc1' into for-2.6.35-incoming

59 files changed, 1105 insertions, 210 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 050ee147592..bdcdbd53da8 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -55,6 +55,11 @@ config SOFT_WATCHDOG
 	  To compile this driver as a module, choose M here: the
 	  module will be called softdog.
 
+config MAX63XX_WATCHDOG
+       tristate "Max63xx watchdog"
+       help
+         Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
+
 config WM831X_WATCHDOG
 	tristate "WM831x watchdog"
 	depends on MFD_WM831X
@@ -194,7 +199,7 @@ config EP93XX_WATCHDOG
 
 config OMAP_WATCHDOG
 	tristate "OMAP Watchdog"
-	depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX
+	depends on ARCH_OMAP16XX || ARCH_OMAP2 || ARCH_OMAP3
 	help
 	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430 watchdog.  Say 'Y'
 	  here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430 watchdog timer.
@@ -289,6 +294,17 @@ config ADX_WATCHDOG
 	  Say Y here if you want support for the watchdog timer on Avionic
 	  Design Xanthos boards.
 
+config TS72XX_WATCHDOG
+	tristate "TS-72XX SBC Watchdog"
+	depends on MACH_TS72XX
+	help
+	  Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
+	  watchdog timer implemented in a external CPLD chip. Say Y here
+	  if you want to support for the watchdog timer on TS-72XX boards.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ts72xx_wdt.
+
 # AVR32 Architecture
 
 config AT32AP700X_WDT
@@ -845,10 +861,10 @@ config TXX9_WDT
 # POWERPC Architecture
 
 config GEF_WDT
-	tristate "GE Fanuc Watchdog Timer"
+	tristate "GE Watchdog Timer"
 	depends on GEF_SBC610 || GEF_SBC310 || GEF_PPC9A
 	---help---
-	  Watchdog timer found in a number of GE Fanuc single board computers.
+	  Watchdog timer found in a number of GE single board computers.
 
 config MPC5200_WDT
 	bool "MPC52xx Watchdog Timer"
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 475c6110006..5e3cb95bb0e 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_COH901327_WATCHDOG) += coh901327_wdt.o
 obj-$(CONFIG_STMP3XXX_WATCHDOG) += stmp3xxx_wdt.o
 obj-$(CONFIG_NUC900_WATCHDOG) += nuc900_wdt.o
 obj-$(CONFIG_ADX_WATCHDOG) += adx_wdt.o
+obj-$(CONFIG_TS72XX_WATCHDOG) += ts72xx_wdt.o
 
 # AVR32 Architecture
 obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
@@ -142,4 +143,5 @@ obj-$(CONFIG_WATCHDOG_CP1XXX)		+= cpwd.o
 # Architecture Independant
 obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
 obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
+obj-$(CONFIG_MAX63XX_WATCHDOG) += max63xx_wdt.o
 obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o
diff --git a/drivers/watchdog/acquirewdt.c b/drivers/watchdog/acquirewdt.c
index 4d18c874d96..2ffce4d7544 100644
--- a/drivers/watchdog/acquirewdt.c
+++ b/drivers/watchdog/acquirewdt.c
@@ -150,7 +150,7 @@ static long acq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int options, retval = -EINVAL;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = WATCHDOG_NAME,
diff --git a/drivers/watchdog/advantechwdt.c b/drivers/watchdog/advantechwdt.c
index 824d076a5cd..4d40965d2c9 100644
--- a/drivers/watchdog/advantechwdt.c
+++ b/drivers/watchdog/advantechwdt.c
@@ -137,7 +137,7 @@ static long advwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int new_timeout;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING |
 			   WDIOF_SETTIMEOUT |
 			   WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/adx_wdt.c b/drivers/watchdog/adx_wdt.c
index 9d7d155364f..a5ca7a6ee13 100644
--- a/drivers/watchdog/adx_wdt.c
+++ b/drivers/watchdog/adx_wdt.c
@@ -37,7 +37,7 @@ struct adx_wdt {
 	spinlock_t lock;
 };
 
-static struct watchdog_info adx_wdt_info = {
+static const struct watchdog_info adx_wdt_info = {
 	.identity = "Avionic Design Xanthos Watchdog",
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 };
diff --git a/drivers/watchdog/alim1535_wdt.c b/drivers/watchdog/alim1535_wdt.c
index 937a80fb61e..1e9caea8ff8 100644
--- a/drivers/watchdog/alim1535_wdt.c
+++ b/drivers/watchdog/alim1535_wdt.c
@@ -180,7 +180,7 @@ static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_KEEPALIVEPING |
 					WDIOF_SETTIMEOUT |
 					WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c
index f90afdb1b25..d8d4da9a483 100644
--- a/drivers/watchdog/alim7101_wdt.c
+++ b/drivers/watchdog/alim7101_wdt.c
@@ -238,7 +238,7 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
 							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c
index 2e94b71b20d..c764c52412e 100644
--- a/drivers/watchdog/ar7_wdt.c
+++ b/drivers/watchdog/ar7_wdt.c
@@ -34,6 +34,7 @@
 #include <linux/ioport.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
+#include <linux/clk.h>
 
 #include <asm/addrspace.h>
 #include <asm/mach-ar7/ar7.h>
@@ -80,6 +81,8 @@ static struct resource *ar7_regs_wdt;
 /* Pointer to the remapped WDT IO space */
 static struct ar7_wdt *ar7_wdt;
 
+static struct clk *vbus_clk;
+
 static void ar7_wdt_kick(u32 value)
 {
 	WRITE_REG(ar7_wdt->kick_lock, 0x5555);
@@ -138,17 +141,19 @@ static void ar7_wdt_disable(u32 value)
 static void ar7_wdt_update_margin(int new_margin)
 {
 	u32 change;
+	u32 vbus_rate;
 
-	change = new_margin * (ar7_vbus_freq() / prescale_value);
+	vbus_rate = clk_get_rate(vbus_clk);
+	change = new_margin * (vbus_rate / prescale_value);
 	if (change < 1)
 		change = 1;
 	if (change > 0xffff)
 		change = 0xffff;
 	ar7_wdt_change(change);
-	margin = change * prescale_value / ar7_vbus_freq();
+	margin = change * prescale_value / vbus_rate;
 	printk(KERN_INFO DRVNAME
 	       ": timer margin %d seconds (prescale %d, change %d, freq %d)\n",
-	       margin, prescale_value, change, ar7_vbus_freq());
+	       margin, prescale_value, change, vbus_rate);
 }
 
 static void ar7_wdt_enable_wdt(void)
@@ -214,7 +219,7 @@ static ssize_t ar7_wdt_write(struct file *file, const char *data,
 static long ar7_wdt_ioctl(struct file *file,
 					unsigned int cmd, unsigned long arg)
 {
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.identity = LONGNAME,
 		.firmware_version = 1,
 		.options = (WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
@@ -298,6 +303,13 @@ static int __devinit ar7_wdt_probe(struct platform_device *pdev)
 		goto out_mem_region;
 	}
 
+	vbus_clk = clk_get(NULL, "vbus");
+	if (IS_ERR(vbus_clk)) {
+		printk(KERN_ERR DRVNAME ": could not get vbus clock\n");
+		rc = PTR_ERR(vbus_clk);
+		goto out_mem_region;
+	}
+
 	ar7_wdt_disable_wdt();
 	ar7_wdt_prescale(prescale_value);
 	ar7_wdt_update_margin(margin);
diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
index 037847923dc..6873376f986 100644
--- a/drivers/watchdog/at32ap700x_wdt.c
+++ b/drivers/watchdog/at32ap700x_wdt.c
@@ -202,7 +202,7 @@ static int at32_wdt_get_status(void)
 	return status;
 }
 
-static struct watchdog_info at32_wdt_info = {
+static const struct watchdog_info at32_wdt_info = {
 	.identity	= "at32ap700x watchdog",
 	.options	= WDIOF_SETTIMEOUT |
 			  WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index b185dafe149..b3046dc4b56 100644
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -121,7 +121,7 @@ static int at91_wdt_settimeout(int new_time)
 	return 0;
 }
 
-static struct watchdog_info at91_wdt_info = {
+static const struct watchdog_info at91_wdt_info = {
 	.identity	= "at91 watchdog",
 	.options	= WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 };
diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
index 751c003864a..5f245522397 100644
--- a/drivers/watchdog/bcm47xx_wdt.c
+++ b/drivers/watchdog/bcm47xx_wdt.c
@@ -149,7 +149,7 @@ static ssize_t bcm47xx_wdt_write(struct file *file, const char __user *data,
 	return len;
 }
 
-static struct watchdog_info bcm47xx_wdt_info = {
+static const struct watchdog_info bcm47xx_wdt_info = {
 	.identity 	= DRV_NAME,
 	.options 	= WDIOF_SETTIMEOUT |
 				WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c
index 2159e668751..9c7ccd1e908 100644
--- a/drivers/watchdog/bfin_wdt.c
+++ b/drivers/watchdog/bfin_wdt.c
@@ -19,8 +19,6 @@
 #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 <linux/uaccess.h>
@@ -74,7 +72,7 @@
 
 static unsigned int timeout = WATCHDOG_TIMEOUT;
 static int nowayout = WATCHDOG_NOWAYOUT;
-static struct watchdog_info bfin_wdt_info;
+static const struct watchdog_info bfin_wdt_info;
 static unsigned long open_check;
 static char expect_close;
 static DEFINE_SPINLOCK(bfin_wdt_spinlock);
@@ -309,26 +307,6 @@ static long bfin_wdt_ioctl(struct file *file,
 	}
 }
 
-/**
- *	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;
 
@@ -388,40 +366,28 @@ static struct miscdevice bfin_wdt_miscdev = {
 	.fops     = &bfin_wdt_fops,
 };
 
-static struct watchdog_info bfin_wdt_info = {
+static const 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_probe - Initialize module
  *
- *	Registers the misc device and notifier handler.  Actual device
+ *	Registers the misc device.  Actual device
  *	initialization is handled by bfin_wdt_open().
  */
 static int __devinit bfin_wdt_probe(struct platform_device *pdev)
 {
 	int ret;
 
-	ret = register_reboot_notifier(&bfin_wdt_notifier);
-	if (ret) {
-		pr_devinit(KERN_ERR PFX
-			"cannot register reboot notifier (err=%d)\n", ret);
-		return ret;
-	}
-
 	ret = misc_register(&bfin_wdt_miscdev);
 	if (ret) {
 		pr_devinit(KERN_ERR PFX
 			"cannot register miscdev on minor=%d (err=%d)\n",
 				WATCHDOG_MINOR, ret);
-		unregister_reboot_notifier(&bfin_wdt_notifier);
 		return ret;
 	}
 
@@ -434,21 +400,33 @@ static int __devinit bfin_wdt_probe(struct platform_device *pdev)
 /**
  *	bfin_wdt_remove - Initialize module
  *
- *	Unregisters the misc device and notifier handler.  Actual device
+ *	Unregisters the misc device.  Actual device
  *	deinitialization is handled by bfin_wdt_close().
  */
 static int __devexit bfin_wdt_remove(struct platform_device *pdev)
 {
 	misc_deregister(&bfin_wdt_miscdev);
-	unregister_reboot_notifier(&bfin_wdt_notifier);
 	return 0;
 }
 
+/**
+ *	bfin_wdt_shutdown - Soft Shutdown Handler
+ *
+ *	Handles the soft shutdown event.
+ */
+static void bfin_wdt_shutdown(struct platform_device *pdev)
+{
+	stampit();
+
+	bfin_wdt_stop();
+}
+
 static struct platform_device *bfin_wdt_device;
 
 static struct platform_driver bfin_wdt_driver = {
 	.probe     = bfin_wdt_probe,
 	.remove    = __devexit_p(bfin_wdt_remove),
+	.shutdown  = bfin_wdt_shutdown,
 	.suspend   = bfin_wdt_suspend,
 	.resume    = bfin_wdt_resume,
 	.driver    = {
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index e8380ef65c1..8b724aad682 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -121,7 +121,7 @@ static ssize_t booke_wdt_write(struct file *file, const char __user *buf,
 	return count;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 	.identity = "PowerPC Book-E Watchdog",
 };
diff --git a/drivers/watchdog/coh901327_wdt.c b/drivers/watchdog/coh901327_wdt.c
index 923cc68dba2..9291506b8b2 100644
--- a/drivers/watchdog/coh901327_wdt.c
+++ b/drivers/watchdog/coh901327_wdt.c
@@ -257,7 +257,7 @@ static long coh901327_ioctl(struct file *file, unsigned int cmd,
 		struct watchdog_info __user *ident;
 		int __user *i;
 	} uarg;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options		= WDIOF_CARDRESET |
 					  WDIOF_SETTIMEOUT |
 					  WDIOF_KEEPALIVEPING,
diff --git a/drivers/watchdog/cpu5wdt.c b/drivers/watchdog/cpu5wdt.c
index 71f6d7eec9a..edd3475f41d 100644
--- a/drivers/watchdog/cpu5wdt.c
+++ b/drivers/watchdog/cpu5wdt.c
@@ -154,7 +154,7 @@ static long cpu5wdt_ioctl(struct file *file, unsigned int cmd,
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	unsigned int value;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_CARDRESET,
 		.identity = "CPU5 WDT",
 	};
diff --git a/drivers/watchdog/cpwd.c b/drivers/watchdog/cpwd.c
index 081f2955419..37ea052d4de 100644
--- a/drivers/watchdog/cpwd.c
+++ b/drivers/watchdog/cpwd.c
@@ -403,7 +403,7 @@ static int cpwd_release(struct inode *inode, struct file *file)
 
 static long cpwd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	static struct watchdog_info info = {
+	static const struct watchdog_info info = {
 		.options		= WDIOF_SETTIMEOUT,
 		.firmware_version	= 1,
 		.identity		= DRIVER_NAME,
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index 887136de185..56162c87f5d 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -142,7 +142,7 @@ davinci_wdt_write(struct file *file, const char *data, size_t len,
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_KEEPALIVEPING,
 	.identity = "DaVinci Watchdog",
 };
diff --git a/drivers/watchdog/ep93xx_wdt.c b/drivers/watchdog/ep93xx_wdt.c
index cdd55e0d09f..88ed54e50f7 100644
--- a/drivers/watchdog/ep93xx_wdt.c
+++ b/drivers/watchdog/ep93xx_wdt.c
@@ -131,7 +131,7 @@ ep93xx_wdt_write(struct file *file, const char __user *data, size_t len,
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE,
 	.identity = "EP93xx Watchdog",
 };
diff --git a/drivers/watchdog/eurotechwdt.c b/drivers/watchdog/eurotechwdt.c
index 9add3541fb4..d1c4e55b1db 100644
--- a/drivers/watchdog/eurotechwdt.c
+++ b/drivers/watchdog/eurotechwdt.c
@@ -238,7 +238,7 @@ static long eurwdt_ioctl(struct file *file,
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options	  = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
 							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
diff --git a/drivers/watchdog/gef_wdt.c b/drivers/watchdog/gef_wdt.c
index 734d9806a87..abdbad034a6 100644
--- a/drivers/watchdog/gef_wdt.c
+++ b/drivers/watchdog/gef_wdt.c
@@ -1,9 +1,9 @@
 /*
- * GE Fanuc watchdog userspace interface
+ * GE watchdog userspace interface
  *
- * Author:  Martyn Welch <martyn.welch@gefanuc.com>
+ * Author:  Martyn Welch <martyn.welch@ge.com>
  *
- * Copyright 2008 GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
  *
  * 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
@@ -161,11 +161,11 @@ static long gef_wdt_ioctl(struct file *file, unsigned int cmd,
 	int timeout;
 	int options;
 	void __user *argp = (void __user *)arg;
-	static struct watchdog_info info = {
+	static const struct watchdog_info info = {
 		.options =	WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
 				WDIOF_KEEPALIVEPING,
 		.firmware_version = 0,
-		.identity = "GE Fanuc watchdog",
+		.identity = "GE watchdog",
 	};
 
 	switch (cmd) {
@@ -311,7 +311,7 @@ static struct of_platform_driver gef_wdt_driver = {
 
 static int __init gef_wdt_init(void)
 {
-	printk(KERN_INFO "GE Fanuc watchdog driver\n");
+	printk(KERN_INFO "GE watchdog driver\n");
 	return of_register_platform_driver(&gef_wdt_driver);
 }
 
@@ -323,8 +323,8 @@ static void __exit gef_wdt_exit(void)
 module_init(gef_wdt_init);
 module_exit(gef_wdt_exit);
 
-MODULE_AUTHOR("Martyn Welch <martyn.welch@gefanuc.com>");
-MODULE_DESCRIPTION("GE Fanuc watchdog driver");
+MODULE_AUTHOR("Martyn Welch <martyn.welch@ge.com>");
+MODULE_DESCRIPTION("GE watchdog driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
 MODULE_ALIAS("platform: gef_wdt");
diff --git a/drivers/watchdog/geodewdt.c b/drivers/watchdog/geodewdt.c
index 38252ff828c..9b49b125ad5 100644
--- a/drivers/watchdog/geodewdt.c
+++ b/drivers/watchdog/geodewdt.c
@@ -142,7 +142,7 @@ static long geodewdt_ioctl(struct file *file, unsigned int cmd,
 	int __user *p = argp;
 	int interval;
 
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING
 		| WDIOF_MAGICCLOSE,
 		.firmware_version =     1,
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index a6c5674c78e..70c2c24660d 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -554,7 +554,7 @@ static ssize_t hpwdt_write(struct file *file, const char __user *data,
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT |
 		   WDIOF_KEEPALIVEPING |
 		   WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/i6300esb.c b/drivers/watchdog/i6300esb.c
index 7ba0b11ec52..bb9750a0394 100644
--- a/drivers/watchdog/i6300esb.c
+++ b/drivers/watchdog/i6300esb.c
@@ -34,7 +34,6 @@
 #include <linux/mm.h>
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
-#include <linux/platform_device.h>
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
@@ -42,7 +41,7 @@
 #include <linux/io.h>
 
 /* Module and version information */
-#define ESB_VERSION "0.04"
+#define ESB_VERSION "0.05"
 #define ESB_MODULE_NAME "i6300ESB timer"
 #define ESB_DRIVER_NAME ESB_MODULE_NAME ", v" ESB_VERSION
 #define PFX ESB_MODULE_NAME ": "
@@ -65,7 +64,7 @@
 /* Config register bits */
 #define ESB_WDT_REBOOT  (0x01 << 5)   /* Enable reboot on timeout          */
 #define ESB_WDT_FREQ    (0x01 << 2)   /* Decrement frequency               */
-#define ESB_WDT_INTTYPE (0x11 << 0)   /* Interrupt type on timer1 timeout  */
+#define ESB_WDT_INTTYPE (0x03 << 0)   /* Interrupt type on timer1 timeout  */
 
 /* Reload register bits */
 #define ESB_WDT_TIMEOUT (0x01 << 9)    /* Watchdog timed out                */
@@ -82,7 +81,9 @@ static unsigned long timer_alive;
 static struct pci_dev *esb_pci;
 static unsigned short triggered; /* The status of the watchdog upon boot */
 static char esb_expect_close;
-static struct platform_device *esb_platform_device;
+
+/* We can only use 1 card due to the /dev/watchdog restriction */
+static int cards_found;
 
 /* module parameters */
 /* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
@@ -111,8 +112,8 @@ MODULE_PARM_DESC(nowayout,
  */
 static inline void esb_unlock_registers(void)
 {
-	writeb(ESB_UNLOCK1, ESB_RELOAD_REG);
-	writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
+	writew(ESB_UNLOCK1, ESB_RELOAD_REG);
+	writew(ESB_UNLOCK2, ESB_RELOAD_REG);
 }
 
 static int esb_timer_start(void)
@@ -256,7 +257,7 @@ static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int new_heartbeat;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_SETTIMEOUT |
 					WDIOF_KEEPALIVEPING |
 					WDIOF_MAGICCLOSE,
@@ -332,11 +333,6 @@ static struct miscdevice esb_miscdev = {
 
 /*
  * Data for PCI driver interface
- *
- * This data only exists for exporting the supported
- * PCI ids via MODULE_DEVICE_TABLE.  We do not actually
- * register a pci_driver, because someone else might one day
- * want to register another driver on the same PCI id.
  */
 static struct pci_device_id esb_pci_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
@@ -348,29 +344,19 @@ MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
  *      Init & exit routines
  */
 
-static unsigned char __devinit esb_getdevice(void)
+static unsigned char __devinit esb_getdevice(struct pci_dev *pdev)
 {
-	/*
-	 *      Find the PCI device
-	 */
-
-	esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL,
-					PCI_DEVICE_ID_INTEL_ESB_9, NULL);
-
-	if (!esb_pci)
-		return 0;
-
-	if (pci_enable_device(esb_pci)) {
+	if (pci_enable_device(pdev)) {
 		printk(KERN_ERR PFX "failed to enable device\n");
 		goto err_devput;
 	}
 
-	if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
+	if (pci_request_region(pdev, 0, ESB_MODULE_NAME)) {
 		printk(KERN_ERR PFX "failed to request region\n");
 		goto err_disable;
 	}
 
-	BASEADDR = pci_ioremap_bar(esb_pci, 0);
+	BASEADDR = pci_ioremap_bar(pdev, 0);
 	if (BASEADDR == NULL) {
 		/* Something's wrong here, BASEADDR has to be set */
 		printk(KERN_ERR PFX "failed to get BASEADDR\n");
@@ -378,14 +364,14 @@ static unsigned char __devinit esb_getdevice(void)
 	}
 
 	/* Done */
+	esb_pci = pdev;
 	return 1;
 
 err_release:
-	pci_release_region(esb_pci, 0);
+	pci_release_region(pdev, 0);
 err_disable:
-	pci_disable_device(esb_pci);
+	pci_disable_device(pdev);
 err_devput:
-	pci_dev_put(esb_pci);
 	return 0;
 }
 
@@ -430,12 +416,23 @@ static void __devinit esb_initdevice(void)
 	esb_timer_set_heartbeat(heartbeat);
 }
 
-static int __devinit esb_probe(struct platform_device *dev)
+static int __devinit esb_probe(struct pci_dev *pdev,
+		const struct pci_device_id *ent)
 {
 	int ret;
 
+	cards_found++;
+	if (cards_found == 1)
+		printk(KERN_INFO PFX "Intel 6300ESB WatchDog Timer Driver v%s\n",
+			ESB_VERSION);
+
+	if (cards_found > 1) {
+		printk(KERN_ERR PFX "This driver only supports 1 device\n");
+		return -ENODEV;
+	}
+
 	/* Check whether or not the hardware watchdog is there */
-	if (!esb_getdevice() || esb_pci == NULL)
+	if (!esb_getdevice(pdev) || esb_pci == NULL)
 		return -ENODEV;
 
 	/* Check that the heartbeat value is within it's range;
@@ -467,11 +464,11 @@ err_unmap:
 	iounmap(BASEADDR);
 	pci_release_region(esb_pci, 0);
 	pci_disable_device(esb_pci);
-	pci_dev_put(esb_pci);
+	esb_pci = NULL;
 	return ret;
 }
 
-static int __devexit esb_remove(struct platform_device *dev)
+static void __devexit esb_remove(struct pci_dev *pdev)
 {
 	/* Stop the timer before we leave */
 	if (!nowayout)
@@ -482,54 +479,30 @@ static int __devexit esb_remove(struct platform_device *dev)
 	iounmap(BASEADDR);
 	pci_release_region(esb_pci, 0);
 	pci_disable_device(esb_pci);
-	pci_dev_put(esb_pci);
-	return 0;
+	esb_pci = NULL;
 }
 
-static void esb_shutdown(struct platform_device *dev)
+static void esb_shutdown(struct pci_dev *pdev)
 {
 	esb_timer_stop();
 }
 
-static struct platform_driver esb_platform_driver = {
+static struct pci_driver esb_driver = {
+	.name		= ESB_MODULE_NAME,
+	.id_table	= esb_pci_tbl,
 	.probe          = esb_probe,
 	.remove         = __devexit_p(esb_remove),
 	.shutdown       = esb_shutdown,
-	.driver         = {
-		.owner  = THIS_MODULE,
-		.name   = ESB_MODULE_NAME,
-	},
 };
 
 static int __init watchdog_init(void)
 {
-	int err;
-
-	printk(KERN_INFO PFX "Intel 6300ESB WatchDog Timer Driver v%s\n",
-		ESB_VERSION);
-
-	err = platform_driver_register(&esb_platform_driver);
-	if (err)
-		return err;
-
-	esb_platform_device = platform_device_register_simple(ESB_MODULE_NAME,
-								-1, NULL, 0);
-	if (IS_ERR(esb_platform_device)) {
-		err = PTR_ERR(esb_platform_device);
-		goto unreg_platform_driver;
-	}
-
-	return 0;
-
-unreg_platform_driver:
-	platform_driver_unregister(&esb_platform_driver);
-	return err;
+	return pci_register_driver(&esb_driver);
 }
 
 static void __exit watchdog_cleanup(void)
 {
-	platform_device_unregister(esb_platform_device);
-	platform_driver_unregister(&esb_platform_driver);
+	pci_unregister_driver(&esb_driver);
 	printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
 }
 
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index 4bdb7f1a907..44bc6aa46ed 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -584,7 +584,7 @@ static long iTCO_wdt_ioctl(struct file *file, unsigned int cmd,
 	int new_heartbeat;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_SETTIMEOUT |
 					WDIOF_KEEPALIVEPING |
 					WDIOF_MAGICCLOSE,
@@ -698,7 +698,7 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
 	if (iTCO_wdt_private.iTCO_version == 2) {
 		pci_read_config_dword(pdev, 0xf0, &base_address);
 		if ((base_address & 1) == 0) {
-			printk(KERN_ERR PFX "RCBA is disabled by harddware\n");
+			printk(KERN_ERR PFX "RCBA is disabled by hardware\n");
 			ret = -ENODEV;
 			goto out;
 		}
@@ -708,8 +708,8 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
 
 	/* Check chipset's NO_REBOOT bit */
 	if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) {
-		printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, "
-					"reboot disabled by hardware\n");
+		printk(KERN_INFO PFX "unable to reset NO_REBOOT flag, "
+					"platform may have disabled it\n");
 		ret = -ENODEV;	/* Cannot reset NO_REBOOT bit */
 		goto out_unmap;
 	}
@@ -805,6 +805,7 @@ static void __devexit iTCO_wdt_cleanup(void)
 
 static int __devinit iTCO_wdt_probe(struct platform_device *dev)
 {
+	int ret = -ENODEV;
 	int found = 0;
 	struct pci_dev *pdev = NULL;
 	const struct pci_device_id *ent;
@@ -814,19 +815,17 @@ static int __devinit iTCO_wdt_probe(struct platform_device *dev)
 	for_each_pci_dev(pdev) {
 		ent = pci_match_id(iTCO_wdt_pci_tbl, pdev);
 		if (ent) {
-			if (!(iTCO_wdt_init(pdev, ent, dev))) {
-				found++;
+			found++;
+			ret = iTCO_wdt_init(pdev, ent, dev);
+			if (!ret)
 				break;
-			}
 		}
 	}
 
-	if (!found) {
+	if (!found)
 		printk(KERN_INFO PFX "No card detected\n");
-		return -ENODEV;
-	}
 
-	return 0;
+	return ret;
 }
 
 static int __devexit iTCO_wdt_remove(struct platform_device *dev)
diff --git a/drivers/watchdog/ib700wdt.c b/drivers/watchdog/ib700wdt.c
index 4bef3ddff4a..0149d8dfc81 100644
--- a/drivers/watchdog/ib700wdt.c
+++ b/drivers/watchdog/ib700wdt.c
@@ -174,7 +174,7 @@ static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
 							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
diff --git a/drivers/watchdog/indydog.c b/drivers/watchdog/indydog.c
index bea8a124a55..1cc5609666d 100644
--- a/drivers/watchdog/indydog.c
+++ b/drivers/watchdog/indydog.c
@@ -111,7 +111,7 @@ static long indydog_ioctl(struct file *file, unsigned int cmd,
 							unsigned long arg)
 {
 	int options, retval = -EINVAL;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options		= WDIOF_KEEPALIVEPING,
 		.firmware_version	= 0,
 		.identity		= "Hardware Watchdog for SGI IP22",
diff --git a/drivers/watchdog/it8712f_wdt.c b/drivers/watchdog/it8712f_wdt.c
index daed48ded7f..f52c162b1be 100644
--- a/drivers/watchdog/it8712f_wdt.c
+++ b/drivers/watchdog/it8712f_wdt.c
@@ -236,7 +236,7 @@ static long it8712f_wdt_ioctl(struct file *file, unsigned int cmd,
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.identity = "IT8712F Watchdog",
 		.firmware_version = 1,
 		.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/it87_wdt.c b/drivers/watchdog/it87_wdt.c
index cc133c531d0..b709b3b2d1e 100644
--- a/drivers/watchdog/it87_wdt.c
+++ b/drivers/watchdog/it87_wdt.c
@@ -421,7 +421,7 @@ static ssize_t wdt_write(struct file *file, const char __user *buf,
 	return count;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
 	.firmware_version =	1,
 	.identity = WATCHDOG_NAME,
diff --git a/drivers/watchdog/ixp2000_wdt.c b/drivers/watchdog/ixp2000_wdt.c
index 3c79dc58795..e86952a7168 100644
--- a/drivers/watchdog/ixp2000_wdt.c
+++ b/drivers/watchdog/ixp2000_wdt.c
@@ -100,7 +100,7 @@ static ssize_t ixp2000_wdt_write(struct file *file, const char *data,
 }
 
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options	= WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT |
 				WDIOF_KEEPALIVEPING,
 	.identity	= "IXP2000 Watchdog",
diff --git a/drivers/watchdog/ixp4xx_wdt.c b/drivers/watchdog/ixp4xx_wdt.c
index 147b4d5c63b..e02c0ecda26 100644
--- a/drivers/watchdog/ixp4xx_wdt.c
+++ b/drivers/watchdog/ixp4xx_wdt.c
@@ -89,7 +89,7 @@ ixp4xx_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options	= WDIOF_CARDRESET | WDIOF_MAGICCLOSE |
 			  WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 	.identity	= "IXP4xx Watchdog",
diff --git a/drivers/watchdog/ks8695_wdt.c b/drivers/watchdog/ks8695_wdt.c
index e1c82769b08..2852bb2e3fd 100644
--- a/drivers/watchdog/ks8695_wdt.c
+++ b/drivers/watchdog/ks8695_wdt.c
@@ -145,7 +145,7 @@ static int ks8695_wdt_close(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct watchdog_info ks8695_wdt_info = {
+static const struct watchdog_info ks8695_wdt_info = {
 	.identity	= "ks8695 watchdog",
 	.options	= WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 };
diff --git a/drivers/watchdog/machzwd.c b/drivers/watchdog/machzwd.c
index 47d719717a3..2d118cf022f 100644
--- a/drivers/watchdog/machzwd.c
+++ b/drivers/watchdog/machzwd.c
@@ -101,7 +101,7 @@ MODULE_PARM_DESC(nowayout,
 
 #define PFX "machzwd"
 
-static struct watchdog_info zf_info = {
+static const struct watchdog_info zf_info = {
 	.options		= WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 	.firmware_version	= 1,
 	.identity		= "ZF-Logic watchdog",
diff --git a/drivers/watchdog/max63xx_wdt.c b/drivers/watchdog/max63xx_wdt.c
new file mode 100644
index 00000000000..6eb91d75760
--- /dev/null
+++ b/drivers/watchdog/max63xx_wdt.c
@@ -0,0 +1,397 @@
+/*
+ * drivers/char/watchdog/max63xx_wdt.c
+ *
+ * Driver for max63{69,70,71,72,73,74} watchdog timers
+ *
+ * Copyright (C) 2009 Marc Zyngier <maz@misterjones.org>
+ *
+ * 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.
+ *
+ * This driver assumes the watchdog pins are memory mapped (as it is
+ * the case for the Arcom Zeus). Should it be connected over GPIOs or
+ * another interface, some abstraction will have to be introduced.
+ */
+
+#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 <linux/uaccess.h>
+#include <linux/io.h>
+#include <linux/device.h>
+
+#define DEFAULT_HEARTBEAT 60
+#define MAX_HEARTBEAT     60
+
+static int heartbeat = DEFAULT_HEARTBEAT;
+static int nowayout  = WATCHDOG_NOWAYOUT;
+
+/*
+ * Memory mapping: a single byte, 3 first lower bits to select bit 3
+ * to ping the watchdog.
+ */
+#define MAX6369_WDSET	(7 << 0)
+#define MAX6369_WDI   	(1 << 3)
+
+static DEFINE_SPINLOCK(io_lock);
+
+static unsigned long wdt_status;
+#define WDT_IN_USE	0
+#define WDT_RUNNING	1
+#define WDT_OK_TO_CLOSE 2
+
+static int nodelay;
+static struct resource	*wdt_mem;
+static void __iomem	*wdt_base;
+static struct platform_device *max63xx_pdev;
+
+/*
+ * The timeout values used are actually the absolute minimum the chip
+ * offers. Typical values on my board are slightly over twice as long
+ * (10s setting ends up with a 25s timeout), and can be up to 3 times
+ * the nominal setting (according to the datasheet). So please take
+ * these values with a grain of salt. Same goes for the initial delay
+ * "feature". Only max6373/74 have a few settings without this initial
+ * delay (selected with the "nodelay" parameter).
+ *
+ * I also decided to remove from the tables any timeout smaller than a
+ * second, as it looked completly overkill...
+ */
+
+/* Timeouts in second */
+struct max63xx_timeout {
+	u8 wdset;
+	u8 tdelay;
+	u8 twd;
+};
+
+static struct max63xx_timeout max6369_table[] = {
+	{ 5,  1,  1 },
+	{ 6, 10, 10 },
+	{ 7, 60, 60 },
+	{ },
+};
+
+static struct max63xx_timeout max6371_table[] = {
+	{ 6, 60,  3 },
+	{ 7, 60, 60 },
+	{ },
+};
+
+static struct max63xx_timeout max6373_table[] = {
+	{ 2, 60,  1 },
+	{ 5,  0,  1 },
+	{ 1,  3,  3 },
+	{ 7, 60, 10 },
+	{ 6,  0, 10 },
+	{ },
+};
+
+static struct max63xx_timeout *current_timeout;
+
+static struct max63xx_timeout *
+max63xx_select_timeout(struct max63xx_timeout *table, int value)
+{
+	while (table->twd) {
+		if (value <= table->twd) {
+			if (nodelay && table->tdelay == 0)
+				return table;
+
+			if (!nodelay)
+				return table;
+		}
+
+		table++;
+	}
+
+	return NULL;
+}
+
+static void max63xx_wdt_ping(void)
+{
+	u8 val;
+
+	spin_lock(&io_lock);
+
+	val = __raw_readb(wdt_base);
+
+	__raw_writeb(val | MAX6369_WDI, wdt_base);
+	__raw_writeb(val & ~MAX6369_WDI, wdt_base);
+
+	spin_unlock(&io_lock);
+}
+
+static void max63xx_wdt_enable(struct max63xx_timeout *entry)
+{
+	u8 val;
+
+	if (test_and_set_bit(WDT_RUNNING, &wdt_status))
+		return;
+
+	spin_lock(&io_lock);
+
+	val = __raw_readb(wdt_base);
+	val &= ~MAX6369_WDSET;
+	val |= entry->wdset;
+	__raw_writeb(val, wdt_base);
+
+	spin_unlock(&io_lock);
+
+	/* check for a edge triggered startup */
+	if (entry->tdelay == 0)
+		max63xx_wdt_ping();
+}
+
+static void max63xx_wdt_disable(void)
+{
+	spin_lock(&io_lock);
+
+	__raw_writeb(3, wdt_base);
+
+	spin_unlock(&io_lock);
+
+	clear_bit(WDT_RUNNING, &wdt_status);
+}
+
+static int max63xx_wdt_open(struct inode *inode, struct file *file)
+{
+	if (test_and_set_bit(WDT_IN_USE, &wdt_status))
+		return -EBUSY;
+
+	max63xx_wdt_enable(current_timeout);
+	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
+
+	return nonseekable_open(inode, file);
+}
+
+static ssize_t max63xx_wdt_write(struct file *file, const char *data,
+				 size_t len, loff_t *ppos)
+{
+	if (len) {
+		if (!nowayout) {
+			size_t i;
+
+			clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
+			for (i = 0; i != len; i++) {
+				char c;
+
+				if (get_user(c, data + i))
+					return -EFAULT;
+
+				if (c == 'V')
+					set_bit(WDT_OK_TO_CLOSE, &wdt_status);
+			}
+		}
+
+		max63xx_wdt_ping();
+	}
+
+	return len;
+}
+
+static const struct watchdog_info ident = {
+	.options = WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
+	.identity = "max63xx Watchdog",
+};
+
+static long max63xx_wdt_ioctl(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_KEEPALIVE:
+		max63xx_wdt_ping();
+		ret = 0;
+		break;
+
+	case WDIOC_GETTIMEOUT:
+		ret = put_user(heartbeat, (int *)arg);
+		break;
+	}
+	return ret;
+}
+
+static int max63xx_wdt_release(struct inode *inode, struct file *file)
+{
+	if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
+		max63xx_wdt_disable();
+	else
+		dev_crit(&max63xx_pdev->dev,
+			 "device closed unexpectedly - timer will not stop\n");
+
+	clear_bit(WDT_IN_USE, &wdt_status);
+	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
+
+	return 0;
+}
+
+static const struct file_operations max63xx_wdt_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.write		= max63xx_wdt_write,
+	.unlocked_ioctl	= max63xx_wdt_ioctl,
+	.open		= max63xx_wdt_open,
+	.release	= max63xx_wdt_release,
+};
+
+static struct miscdevice max63xx_wdt_miscdev = {
+	.minor	= WATCHDOG_MINOR,
+	.name	= "watchdog",
+	.fops	= &max63xx_wdt_fops,
+};
+
+static int __devinit max63xx_wdt_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	int size;
+	struct resource *res;
+	struct device *dev = &pdev->dev;
+	struct max63xx_timeout *table;
+
+	table = (struct max63xx_timeout *)pdev->id_entry->driver_data;
+
+	if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
+		heartbeat = DEFAULT_HEARTBEAT;
+
+	dev_info(dev, "requesting %ds heartbeat\n", heartbeat);
+	current_timeout = max63xx_select_timeout(table, heartbeat);
+
+	if (!current_timeout) {
+		dev_err(dev, "unable to satisfy heartbeat request\n");
+		return -EINVAL;
+	}
+
+	dev_info(dev, "using %ds heartbeat with %ds initial delay\n",
+		 current_timeout->twd, current_timeout->tdelay);
+
+	heartbeat = current_timeout->twd;
+
+	max63xx_pdev = pdev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(dev, "failed to get memory region resource\n");
+		return -ENOENT;
+	}
+
+	size = resource_size(res);
+	wdt_mem = request_mem_region(res->start, size, pdev->name);
+
+	if (wdt_mem == NULL) {
+		dev_err(dev, "failed to get memory region\n");
+		return -ENOENT;
+	}
+
+	wdt_base = ioremap(res->start, size);
+	if (!wdt_base) {
+		dev_err(dev, "failed to map memory region\n");
+		ret = -ENOMEM;
+		goto out_request;
+	}
+
+	ret = misc_register(&max63xx_wdt_miscdev);
+	if (ret < 0) {
+		dev_err(dev, "cannot register misc device\n");
+		goto out_unmap;
+	}
+
+	return 0;
+
+out_unmap:
+	iounmap(wdt_base);
+out_request:
+	release_resource(wdt_mem);
+	kfree(wdt_mem);
+
+	return ret;
+}
+
+static int __devexit max63xx_wdt_remove(struct platform_device *pdev)
+{
+	misc_deregister(&max63xx_wdt_miscdev);
+	if (wdt_mem) {
+		release_resource(wdt_mem);
+		kfree(wdt_mem);
+		wdt_mem = NULL;
+	}
+
+	if (wdt_base)
+		iounmap(wdt_base);
+
+	return 0;
+}
+
+static struct platform_device_id max63xx_id_table[] = {
+	{ "max6369_wdt", (kernel_ulong_t)max6369_table, },
+	{ "max6370_wdt", (kernel_ulong_t)max6369_table, },
+	{ "max6371_wdt", (kernel_ulong_t)max6371_table, },
+	{ "max6372_wdt", (kernel_ulong_t)max6371_table, },
+	{ "max6373_wdt", (kernel_ulong_t)max6373_table, },
+	{ "max6374_wdt", (kernel_ulong_t)max6373_table, },
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, max63xx_id_table);
+
+static struct platform_driver max63xx_wdt_driver = {
+	.probe		= max63xx_wdt_probe,
+	.remove		= __devexit_p(max63xx_wdt_remove),
+	.id_table	= max63xx_id_table,
+	.driver		= {
+		.name	= "max63xx_wdt",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init max63xx_wdt_init(void)
+{
+	return platform_driver_register(&max63xx_wdt_driver);
+}
+
+static void __exit max63xx_wdt_exit(void)
+{
+	platform_driver_unregister(&max63xx_wdt_driver);
+}
+
+module_init(max63xx_wdt_init);
+module_exit(max63xx_wdt_exit);
+
+MODULE_AUTHOR("Marc Zyngier <maz@misterjones.org>");
+MODULE_DESCRIPTION("max63xx 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_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+		 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+module_param(nodelay, int, 0);
+MODULE_PARM_DESC(nodelay,
+		 "Force selection of a timeout setting without initial delay "
+		 "(max6373/74 only, default=0)");
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/mixcomwd.c b/drivers/watchdog/mixcomwd.c
index 407b025cb10..bc820d16699 100644
--- a/drivers/watchdog/mixcomwd.c
+++ b/drivers/watchdog/mixcomwd.c
@@ -201,7 +201,7 @@ static long mixcomwd_ioctl(struct file *file,
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	int status;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = "MixCOM watchdog",
diff --git a/drivers/watchdog/mpc8xxx_wdt.c b/drivers/watchdog/mpc8xxx_wdt.c
index 38c588ee694..4e3941c5e29 100644
--- a/drivers/watchdog/mpc8xxx_wdt.c
+++ b/drivers/watchdog/mpc8xxx_wdt.c
@@ -148,7 +148,7 @@ static long mpc8xxx_wdt_ioctl(struct file *file, unsigned int cmd,
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING,
 		.firmware_version = 1,
 		.identity = "MPC8xxx",
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
index a2dc07c2ed4..b0646dac924 100644
--- a/drivers/watchdog/mpcore_wdt.c
+++ b/drivers/watchdog/mpcore_wdt.c
@@ -213,7 +213,7 @@ static ssize_t mpcore_wdt_write(struct file *file, const char *data,
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options		= WDIOF_SETTIMEOUT |
 				  WDIOF_KEEPALIVEPING |
 				  WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/mv64x60_wdt.c b/drivers/watchdog/mv64x60_wdt.c
index a51dbe4c43d..97f8a48d8b7 100644
--- a/drivers/watchdog/mv64x60_wdt.c
+++ b/drivers/watchdog/mv64x60_wdt.c
@@ -179,7 +179,7 @@ static long mv64x60_wdt_ioctl(struct file *file,
 	int timeout;
 	int options;
 	void __user *argp = (void __user *)arg;
-	static struct watchdog_info info = {
+	static const struct watchdog_info info = {
 		.options =	WDIOF_SETTIMEOUT	|
 				WDIOF_MAGICCLOSE	|
 				WDIOF_KEEPALIVEPING,
diff --git a/drivers/watchdog/pc87413_wdt.c b/drivers/watchdog/pc87413_wdt.c
index 1a2b916e3f8..d3aa2f1fe61 100644
--- a/drivers/watchdog/pc87413_wdt.c
+++ b/drivers/watchdog/pc87413_wdt.c
@@ -407,7 +407,7 @@ static long pc87413_ioctl(struct file *file, unsigned int cmd,
 		int __user *i;
 	} uarg;
 
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options          = WDIOF_KEEPALIVEPING |
 				    WDIOF_SETTIMEOUT |
 				    WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/pcwd.c b/drivers/watchdog/pcwd.c
index aa9512321f3..06f7922606c 100644
--- a/drivers/watchdog/pcwd.c
+++ b/drivers/watchdog/pcwd.c
@@ -606,7 +606,7 @@ static long pcwd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int temperature;
 	int new_heartbeat;
 	int __user *argp = (int __user *)arg;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_OVERHEAT |
 					WDIOF_CARDRESET |
 					WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/pcwd_pci.c b/drivers/watchdog/pcwd_pci.c
index 698f51bff1b..64374d636f0 100644
--- a/drivers/watchdog/pcwd_pci.c
+++ b/drivers/watchdog/pcwd_pci.c
@@ -481,7 +481,7 @@ static long pcipcwd_ioctl(struct file *file, unsigned int cmd,
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_OVERHEAT |
 					WDIOF_CARDRESET |
 					WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index 052fe451851..8e4eacc5bb5 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -404,7 +404,7 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_KEEPALIVEPING |
 					WDIOF_SETTIMEOUT |
 					WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/pika_wdt.c b/drivers/watchdog/pika_wdt.c
index 2d22e996e99..435ec2aed4f 100644
--- a/drivers/watchdog/pika_wdt.c
+++ b/drivers/watchdog/pika_wdt.c
@@ -52,7 +52,7 @@ static struct {
 	struct timer_list timer;	/* The timer that pings the watchdog */
 } pikawdt_private;
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.identity	= DRV_NAME,
 	.options	= WDIOF_CARDRESET |
 			  WDIOF_SETTIMEOUT |
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index 430a5848a9a..c7a9479934a 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -96,9 +96,6 @@ static void wdt_enable(void)
 {
 	spin_lock(&io_lock);
 
-	if (wdt_clk)
-		clk_set_rate(wdt_clk, 1);
-
 	/* stop counter, initiate counter reset */
 	__raw_writel(RESET_COUNT, WDTIM_CTRL(wdt_base));
 	/*wait for reset to complete. 100% guarantee event */
@@ -125,19 +122,25 @@ static void wdt_disable(void)
 	spin_lock(&io_lock);
 
 	__raw_writel(0, WDTIM_CTRL(wdt_base));	/*stop counter */
-	if (wdt_clk)
-		clk_set_rate(wdt_clk, 0);
 
 	spin_unlock(&io_lock);
 }
 
 static int pnx4008_wdt_open(struct inode *inode, struct file *file)
 {
+	int ret;
+
 	if (test_and_set_bit(WDT_IN_USE, &wdt_status))
 		return -EBUSY;
 
 	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
 
+	ret = clk_enable(wdt_clk);
+	if (ret) {
+		clear_bit(WDT_IN_USE, &wdt_status);
+		return ret;
+	}
+
 	wdt_enable();
 
 	return nonseekable_open(inode, file);
@@ -225,6 +228,7 @@ static int pnx4008_wdt_release(struct inode *inode, struct file *file)
 		printk(KERN_WARNING "WATCHDOG: Device closed unexpectdly\n");
 
 	wdt_disable();
+	clk_disable(wdt_clk);
 	clear_bit(WDT_IN_USE, &wdt_status);
 	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
 
@@ -273,25 +277,33 @@ static int __devinit pnx4008_wdt_probe(struct platform_device *pdev)
 	}
 	wdt_base = (void __iomem *)IO_ADDRESS(res->start);
 
-	wdt_clk = clk_get(&pdev->dev, "wdt_ck");
+	wdt_clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(wdt_clk)) {
 		ret = PTR_ERR(wdt_clk);
 		release_resource(wdt_mem);
 		kfree(wdt_mem);
 		goto out;
-	} else
-		clk_set_rate(wdt_clk, 1);
+	}
+
+	ret = clk_enable(wdt_clk);
+	if (ret) {
+		release_resource(wdt_mem);
+		kfree(wdt_mem);
+		goto out;
+	}
 
 	ret = misc_register(&pnx4008_wdt_miscdev);
 	if (ret < 0) {
 		printk(KERN_ERR MODULE_NAME "cannot register misc device\n");
 		release_resource(wdt_mem);
 		kfree(wdt_mem);
-		clk_set_rate(wdt_clk, 0);
+		clk_disable(wdt_clk);
+		clk_put(wdt_clk);
 	} else {
 		boot_status = (__raw_readl(WDTIM_RES(wdt_base)) & WDOG_RESET) ?
 		    WDIOF_CARDRESET : 0;
 		wdt_disable();		/*disable for now */
+		clk_disable(wdt_clk);
 		set_bit(WDT_DEVICE_INITED, &wdt_status);
 	}
 
@@ -302,11 +314,10 @@ out:
 static int __devexit pnx4008_wdt_remove(struct platform_device *pdev)
 {
 	misc_deregister(&pnx4008_wdt_miscdev);
-	if (wdt_clk) {
-		clk_set_rate(wdt_clk, 0);
-		clk_put(wdt_clk);
-		wdt_clk = NULL;
-	}
+
+	clk_disable(wdt_clk);
+	clk_put(wdt_clk);
+
 	if (wdt_mem) {
 		release_resource(wdt_mem);
 		kfree(wdt_mem);
diff --git a/drivers/watchdog/pnx833x_wdt.c b/drivers/watchdog/pnx833x_wdt.c
index 538ec2c0519..09102f09e68 100644
--- a/drivers/watchdog/pnx833x_wdt.c
+++ b/drivers/watchdog/pnx833x_wdt.c
@@ -141,7 +141,7 @@ static long pnx833x_wdt_ioctl(struct file *file, unsigned int cmd,
 	int options, new_timeout = 0;
 	uint32_t timeout, timeout_left = 0;
 
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT,
 		.firmware_version = 0,
 		.identity = "Hardware Watchdog for PNX833x",
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
index bf12d06b587..d4c29b5311a 100644
--- a/drivers/watchdog/rc32434_wdt.c
+++ b/drivers/watchdog/rc32434_wdt.c
@@ -198,7 +198,7 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 	void __user *argp = (void __user *)arg;
 	int new_timeout;
 	unsigned int value;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options =		WDIOF_SETTIMEOUT |
 					WDIOF_KEEPALIVEPING |
 					WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/rdc321x_wdt.c b/drivers/watchdog/rdc321x_wdt.c
index 4976bfd1fce..69c6adbd820 100644
--- a/drivers/watchdog/rdc321x_wdt.c
+++ b/drivers/watchdog/rdc321x_wdt.c
@@ -149,7 +149,7 @@ static long rdc321x_wdt_ioctl(struct file *file, unsigned int cmd,
 {
 	void __user *argp = (void __user *)arg;
 	unsigned int value;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_CARDRESET,
 		.identity = "RDC321x WDT",
 	};
diff --git a/drivers/watchdog/riowd.c b/drivers/watchdog/riowd.c
index c14ae867690..ae57bf9e1b0 100644
--- a/drivers/watchdog/riowd.c
+++ b/drivers/watchdog/riowd.c
@@ -85,7 +85,7 @@ static int riowd_release(struct inode *inode, struct file *filp)
 
 static long riowd_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-	static struct watchdog_info info = {
+	static const struct watchdog_info info = {
 		.options		= WDIOF_SETTIMEOUT,
 		.firmware_version	= 1,
 		.identity		= DRIVER_NAME,
diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c
index e6763d2a567..8d44c9b6fb5 100644
--- a/drivers/watchdog/sbc_fitpc2_wdt.c
+++ b/drivers/watchdog/sbc_fitpc2_wdt.c
@@ -111,7 +111,7 @@ out:
 }
 
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options	= WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT |
 				WDIOF_KEEPALIVEPING,
 	.identity	= WATCHDOG_NAME,
diff --git a/drivers/watchdog/sch311x_wdt.c b/drivers/watchdog/sch311x_wdt.c
index 569eb295a7a..9c40f48804f 100644
--- a/drivers/watchdog/sch311x_wdt.c
+++ b/drivers/watchdog/sch311x_wdt.c
@@ -250,7 +250,7 @@ static long sch311x_wdt_ioctl(struct file *file, unsigned int cmd,
 	int new_timeout;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options		= WDIOF_KEEPALIVEPING |
 					  WDIOF_SETTIMEOUT |
 					  WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/stmp3xxx_wdt.c b/drivers/watchdog/stmp3xxx_wdt.c
index 5dd952681f3..b3421fd2cda 100644
--- a/drivers/watchdog/stmp3xxx_wdt.c
+++ b/drivers/watchdog/stmp3xxx_wdt.c
@@ -94,7 +94,7 @@ static ssize_t stmp3xxx_wdt_write(struct file *file, const char __user *data,
 	return len;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options	= WDIOF_CARDRESET |
 			  WDIOF_MAGICCLOSE |
 			  WDIOF_SETTIMEOUT |
diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
new file mode 100644
index 00000000000..565a2c3321e
--- /dev/null
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -0,0 +1,520 @@
+/*
+ * Watchdog driver for Technologic Systems TS-72xx based SBCs
+ * (TS-7200, TS-7250 and TS-7260). These boards have external
+ * glue logic CPLD chip, which includes programmable watchdog
+ * timer.
+ *
+ * Copyright (c) 2009 Mika Westerberg <mika.westerberg@iki.fi>
+ *
+ * This driver is based on ep93xx_wdt and wm831x_wdt drivers.
+ *
+ * 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/fs.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/miscdevice.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/watchdog.h>
+#include <linux/uaccess.h>
+
+#define TS72XX_WDT_FEED_VAL		0x05
+#define TS72XX_WDT_DEFAULT_TIMEOUT	8
+
+static int timeout = TS72XX_WDT_DEFAULT_TIMEOUT;
+module_param(timeout, int, 0);
+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. "
+			  "(1 <= timeout <= 8, default="
+			  __MODULE_STRING(TS72XX_WDT_DEFAULT_TIMEOUT)
+			  ")");
+
+static int nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
+
+/**
+ * struct ts72xx_wdt - watchdog control structure
+ * @lock: lock that protects this structure
+ * @regval: watchdog timeout value suitable for control register
+ * @flags: flags controlling watchdog device state
+ * @control_reg: watchdog control register
+ * @feed_reg: watchdog feed register
+ * @pdev: back pointer to platform dev
+ */
+struct ts72xx_wdt {
+	struct mutex	lock;
+	int		regval;
+
+#define TS72XX_WDT_BUSY_FLAG		1
+#define TS72XX_WDT_EXPECT_CLOSE_FLAG	2
+	int		flags;
+
+	void __iomem	*control_reg;
+	void __iomem	*feed_reg;
+
+	struct platform_device *pdev;
+};
+
+struct platform_device *ts72xx_wdt_pdev;
+
+/*
+ * TS-72xx Watchdog supports following timeouts (value written
+ * to control register):
+ *	value	description
+ *	-------------------------
+ * 	0x00	watchdog disabled
+ *	0x01	250ms
+ *	0x02	500ms
+ *	0x03	1s
+ *	0x04	reserved
+ *	0x05	2s
+ *	0x06	4s
+ *	0x07	8s
+ *
+ * Timeouts below 1s are not very usable so we don't
+ * allow them at all.
+ *
+ * We provide two functions that convert between these:
+ * timeout_to_regval() and regval_to_timeout().
+ */
+static const struct {
+	int	timeout;
+	int	regval;
+} ts72xx_wdt_map[] = {
+	{ 1, 3 },
+	{ 2, 5 },
+	{ 4, 6 },
+	{ 8, 7 },
+};
+
+/**
+ * timeout_to_regval() - converts given timeout to control register value
+ * @new_timeout: timeout in seconds to be converted
+ *
+ * Function converts given @new_timeout into valid value that can
+ * be programmed into watchdog control register. When conversion is
+ * not possible, function returns %-EINVAL.
+ */
+static int timeout_to_regval(int new_timeout)
+{
+	int i;
+
+	/* first limit it to 1 - 8 seconds */
+	new_timeout = clamp_val(new_timeout, 1, 8);
+
+	for (i = 0; i < ARRAY_SIZE(ts72xx_wdt_map); i++) {
+		if (ts72xx_wdt_map[i].timeout >= new_timeout)
+			return ts72xx_wdt_map[i].regval;
+	}
+
+	return -EINVAL;
+}
+
+/**
+ * regval_to_timeout() - converts control register value to timeout
+ * @regval: control register value to be converted
+ *
+ * Function converts given @regval to timeout in seconds (1, 2, 4 or 8).
+ * If @regval cannot be converted, function returns %-EINVAL.
+ */
+static int regval_to_timeout(int regval)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ts72xx_wdt_map); i++) {
+		if (ts72xx_wdt_map[i].regval == regval)
+			return ts72xx_wdt_map[i].timeout;
+	}
+
+	return -EINVAL;
+}
+
+/**
+ * ts72xx_wdt_kick() - kick the watchdog
+ * @wdt: watchdog to be kicked
+ *
+ * Called with @wdt->lock held.
+ */
+static inline void ts72xx_wdt_kick(struct ts72xx_wdt *wdt)
+{
+	__raw_writeb(TS72XX_WDT_FEED_VAL, wdt->feed_reg);
+}
+
+/**
+ * ts72xx_wdt_start() - starts the watchdog timer
+ * @wdt: watchdog to be started
+ *
+ * This function programs timeout to watchdog timer
+ * and starts it.
+ *
+ * Called with @wdt->lock held.
+ */
+static void ts72xx_wdt_start(struct ts72xx_wdt *wdt)
+{
+	/*
+	 * To program the wdt, it first must be "fed" and
+	 * only after that (within 30 usecs) the configuration
+	 * can be changed.
+	 */
+	ts72xx_wdt_kick(wdt);
+	__raw_writeb((u8)wdt->regval, wdt->control_reg);
+}
+
+/**
+ * ts72xx_wdt_stop() - stops the watchdog timer
+ * @wdt: watchdog to be stopped
+ *
+ * Called with @wdt->lock held.
+ */
+static void ts72xx_wdt_stop(struct ts72xx_wdt *wdt)
+{
+	ts72xx_wdt_kick(wdt);
+	__raw_writeb(0, wdt->control_reg);
+}
+
+static int ts72xx_wdt_open(struct inode *inode, struct file *file)
+{
+	struct ts72xx_wdt *wdt = platform_get_drvdata(ts72xx_wdt_pdev);
+	int regval;
+
+	/*
+	 * Try to convert default timeout to valid register
+	 * value first.
+	 */
+	regval = timeout_to_regval(timeout);
+	if (regval < 0) {
+		dev_err(&wdt->pdev->dev,
+			"failed to convert timeout (%d) to register value\n",
+			timeout);
+		return -EINVAL;
+	}
+
+	if (mutex_lock_interruptible(&wdt->lock))
+		return -ERESTARTSYS;
+
+	if ((wdt->flags & TS72XX_WDT_BUSY_FLAG) != 0) {
+		mutex_unlock(&wdt->lock);
+		return -EBUSY;
+	}
+
+	wdt->flags = TS72XX_WDT_BUSY_FLAG;
+	wdt->regval = regval;
+	file->private_data = wdt;
+
+	ts72xx_wdt_start(wdt);
+
+	mutex_unlock(&wdt->lock);
+	return nonseekable_open(inode, file);
+}
+
+static int ts72xx_wdt_release(struct inode *inode, struct file *file)
+{
+	struct ts72xx_wdt *wdt = file->private_data;
+
+	if (mutex_lock_interruptible(&wdt->lock))
+		return -ERESTARTSYS;
+
+	if ((wdt->flags & TS72XX_WDT_EXPECT_CLOSE_FLAG) != 0) {
+		ts72xx_wdt_stop(wdt);
+	} else {
+		dev_warn(&wdt->pdev->dev,
+			 "TS-72XX WDT device closed unexpectly. "
+			 "Watchdog timer will not stop!\n");
+		/*
+		 * Kick it one more time, to give userland some time
+		 * to recover (for example, respawning the kicker
+		 * daemon).
+		 */
+		ts72xx_wdt_kick(wdt);
+	}
+
+	wdt->flags = 0;
+
+	mutex_unlock(&wdt->lock);
+	return 0;
+}
+
+static ssize_t ts72xx_wdt_write(struct file *file,
+				const char __user *data,
+				size_t len,
+				loff_t *ppos)
+{
+	struct ts72xx_wdt *wdt = file->private_data;
+
+	if (!len)
+		return 0;
+
+	if (mutex_lock_interruptible(&wdt->lock))
+		return -ERESTARTSYS;
+
+	ts72xx_wdt_kick(wdt);
+
+	/*
+	 * Support for magic character closing. User process
+	 * writes 'V' into the device, just before it is closed.
+	 * This means that we know that the wdt timer can be
+	 * stopped after user closes the device.
+	 */
+	if (!nowayout) {
+		int i;
+
+		for (i = 0; i < len; i++) {
+			char c;
+
+			/* In case it was set long ago */
+			wdt->flags &= ~TS72XX_WDT_EXPECT_CLOSE_FLAG;
+
+			if (get_user(c, data + i)) {
+				mutex_unlock(&wdt->lock);
+				return -EFAULT;
+			}
+			if (c == 'V') {
+				wdt->flags |= TS72XX_WDT_EXPECT_CLOSE_FLAG;
+				break;
+			}
+		}
+	}
+
+	mutex_unlock(&wdt->lock);
+	return len;
+}
+
+static const struct watchdog_info winfo = {
+	.options		= WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
+				  WDIOF_MAGICCLOSE,
+	.firmware_version	= 1,
+	.identity		= "TS-72XX WDT",
+};
+
+static long ts72xx_wdt_ioctl(struct file *file, unsigned int cmd,
+			     unsigned long arg)
+{
+	struct ts72xx_wdt *wdt = file->private_data;
+	void __user *argp = (void __user *)arg;
+	int __user *p = (int __user *)argp;
+	int error = 0;
+
+	if (mutex_lock_interruptible(&wdt->lock))
+		return -ERESTARTSYS;
+
+	switch (cmd) {
+	case WDIOC_GETSUPPORT:
+		error = copy_to_user(argp, &winfo, sizeof(winfo));
+		break;
+
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+
+	case WDIOC_KEEPALIVE:
+		ts72xx_wdt_kick(wdt);
+		break;
+
+	case WDIOC_SETOPTIONS: {
+		int options;
+
+		if (get_user(options, p)) {
+			error = -EFAULT;
+			break;
+		}
+
+		error = -EINVAL;
+
+		if ((options & WDIOS_DISABLECARD) != 0) {
+			ts72xx_wdt_stop(wdt);
+			error = 0;
+		}
+		if ((options & WDIOS_ENABLECARD) != 0) {
+			ts72xx_wdt_start(wdt);
+			error = 0;
+		}
+
+		break;
+	}
+
+	case WDIOC_SETTIMEOUT: {
+		int new_timeout;
+
+		if (get_user(new_timeout, p)) {
+			error = -EFAULT;
+		} else {
+			int regval;
+
+			regval = timeout_to_regval(new_timeout);
+			if (regval < 0) {
+				error = -EINVAL;
+			} else {
+				ts72xx_wdt_stop(wdt);
+				wdt->regval = regval;
+				ts72xx_wdt_start(wdt);
+			}
+		}
+		if (error)
+			break;
+
+		/*FALLTHROUGH*/
+	}
+
+	case WDIOC_GETTIMEOUT:
+		if (put_user(regval_to_timeout(wdt->regval), p))
+			error = -EFAULT;
+		break;
+
+	default:
+		error = -ENOTTY;
+		break;
+	}
+
+	mutex_unlock(&wdt->lock);
+	return error;
+}
+
+static const struct file_operations ts72xx_wdt_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.open		= ts72xx_wdt_open,
+	.release	= ts72xx_wdt_release,
+	.write		= ts72xx_wdt_write,
+	.unlocked_ioctl	= ts72xx_wdt_ioctl,
+};
+
+static struct miscdevice ts72xx_wdt_miscdev = {
+	.minor		= WATCHDOG_MINOR,
+	.name		= "watchdog",
+	.fops		= &ts72xx_wdt_fops,
+};
+
+static __devinit int ts72xx_wdt_probe(struct platform_device *pdev)
+{
+	struct ts72xx_wdt *wdt;
+	struct resource *r1, *r2;
+	int error = 0;
+
+	wdt = kzalloc(sizeof(struct ts72xx_wdt), GFP_KERNEL);
+	if (!wdt) {
+		dev_err(&pdev->dev, "failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	r1 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!r1) {
+		dev_err(&pdev->dev, "failed to get memory resource\n");
+		error = -ENODEV;
+		goto fail;
+	}
+
+	r1 = request_mem_region(r1->start, resource_size(r1), pdev->name);
+	if (!r1) {
+		dev_err(&pdev->dev, "cannot request memory region\n");
+		error = -EBUSY;
+		goto fail;
+	}
+
+	wdt->control_reg = ioremap(r1->start, resource_size(r1));
+	if (!wdt->control_reg) {
+		dev_err(&pdev->dev, "failed to map memory\n");
+		error = -ENODEV;
+		goto fail_free_control;
+	}
+
+	r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (!r2) {
+		dev_err(&pdev->dev, "failed to get memory resource\n");
+		error = -ENODEV;
+		goto fail_unmap_control;
+	}
+
+	r2 = request_mem_region(r2->start, resource_size(r2), pdev->name);
+	if (!r2) {
+		dev_err(&pdev->dev, "cannot request memory region\n");
+		error = -EBUSY;
+		goto fail_unmap_control;
+	}
+
+	wdt->feed_reg = ioremap(r2->start, resource_size(r2));
+	if (!wdt->feed_reg) {
+		dev_err(&pdev->dev, "failed to map memory\n");
+		error = -ENODEV;
+		goto fail_free_feed;
+	}
+
+	platform_set_drvdata(pdev, wdt);
+	ts72xx_wdt_pdev = pdev;
+	wdt->pdev = pdev;
+	mutex_init(&wdt->lock);
+
+	error = misc_register(&ts72xx_wdt_miscdev);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register miscdev\n");
+		goto fail_unmap_feed;
+	}
+
+	dev_info(&pdev->dev, "TS-72xx Watchdog driver\n");
+
+	return 0;
+
+fail_unmap_feed:
+	platform_set_drvdata(pdev, NULL);
+	iounmap(wdt->feed_reg);
+fail_free_feed:
+	release_mem_region(r2->start, resource_size(r2));
+fail_unmap_control:
+	iounmap(wdt->control_reg);
+fail_free_control:
+	release_mem_region(r1->start, resource_size(r1));
+fail:
+	kfree(wdt);
+	return error;
+}
+
+static __devexit int ts72xx_wdt_remove(struct platform_device *pdev)
+{
+	struct ts72xx_wdt *wdt = platform_get_drvdata(pdev);
+	struct resource *res;
+	int error;
+
+	error = misc_deregister(&ts72xx_wdt_miscdev);
+	platform_set_drvdata(pdev, NULL);
+
+	iounmap(wdt->feed_reg);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	release_mem_region(res->start, resource_size(res));
+
+	iounmap(wdt->control_reg);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(res->start, resource_size(res));
+
+	kfree(wdt);
+	return error;
+}
+
+static struct platform_driver ts72xx_wdt_driver = {
+	.probe		= ts72xx_wdt_probe,
+	.remove		= __devexit_p(ts72xx_wdt_remove),
+	.driver		= {
+		.name	= "ts72xx-wdt",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static __init int ts72xx_wdt_init(void)
+{
+	return platform_driver_register(&ts72xx_wdt_driver);
+}
+module_init(ts72xx_wdt_init);
+
+static __exit void ts72xx_wdt_exit(void)
+{
+	platform_driver_unregister(&ts72xx_wdt_driver);
+}
+module_exit(ts72xx_wdt_exit);
+
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
+MODULE_DESCRIPTION("TS-72xx SBC Watchdog");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ts72xx-wdt");
diff --git a/drivers/watchdog/txx9wdt.c b/drivers/watchdog/txx9wdt.c
index d635566e930..9e9ed7bfabc 100644
--- a/drivers/watchdog/txx9wdt.c
+++ b/drivers/watchdog/txx9wdt.c
@@ -13,7 +13,6 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/fs.h>
-#include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/uaccess.h>
 #include <linux/platform_device.h>
@@ -166,14 +165,6 @@ static long txx9wdt_ioctl(struct file *file, unsigned int cmd,
 	}
 }
 
-static int txx9wdt_notify_sys(struct notifier_block *this, unsigned long code,
-	void *unused)
-{
-	if (code == SYS_DOWN || code == SYS_HALT)
-		txx9wdt_stop();
-	return NOTIFY_DONE;
-}
-
 static const struct file_operations txx9wdt_fops = {
 	.owner		=	THIS_MODULE,
 	.llseek		=	no_llseek,
@@ -189,10 +180,6 @@ static struct miscdevice txx9wdt_miscdev = {
 	.fops	=	&txx9wdt_fops,
 };
 
-static struct notifier_block txx9wdt_notifier = {
-	.notifier_call = txx9wdt_notify_sys,
-};
-
 static int __init txx9wdt_probe(struct platform_device *dev)
 {
 	struct resource *res;
@@ -221,13 +208,8 @@ static int __init txx9wdt_probe(struct platform_device *dev)
 	if (!txx9wdt_reg)
 		goto exit_busy;
 
-	ret = register_reboot_notifier(&txx9wdt_notifier);
-	if (ret)
-		goto exit;
-
 	ret = misc_register(&txx9wdt_miscdev);
 	if (ret) {
-		unregister_reboot_notifier(&txx9wdt_notifier);
 		goto exit;
 	}
 
@@ -249,14 +231,19 @@ exit:
 static int __exit txx9wdt_remove(struct platform_device *dev)
 {
 	misc_deregister(&txx9wdt_miscdev);
-	unregister_reboot_notifier(&txx9wdt_notifier);
 	clk_disable(txx9_imclk);
 	clk_put(txx9_imclk);
 	return 0;
 }
 
+static void txx9wdt_shutdown(struct platform_device *dev)
+{
+	txx9wdt_stop();
+}
+
 static struct platform_driver txx9wdt_driver = {
 	.remove = __exit_p(txx9wdt_remove),
+	.shutdown = txx9wdt_shutdown,
 	.driver = {
 		.name = "txx9wdt",
 		.owner = THIS_MODULE,
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index f201accc4e3..0f5288df009 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -201,7 +201,7 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	int new_timeout;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
 							WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
diff --git a/drivers/watchdog/w83977f_wdt.c b/drivers/watchdog/w83977f_wdt.c
index 0560182a1d0..6e6743d1066 100644
--- a/drivers/watchdog/w83977f_wdt.c
+++ b/drivers/watchdog/w83977f_wdt.c
@@ -371,7 +371,7 @@ static ssize_t wdt_write(struct file *file, const char __user *buf,
  *      according to their available features.
  */
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
 	.firmware_version =	1,
 	.identity = WATCHDOG_NAME,
diff --git a/drivers/watchdog/wdrtas.c b/drivers/watchdog/wdrtas.c
index 5bfb1f2c531..94ec22b9e66 100644
--- a/drivers/watchdog/wdrtas.c
+++ b/drivers/watchdog/wdrtas.c
@@ -312,7 +312,7 @@ static long wdrtas_ioctl(struct file *file, unsigned int cmd,
 {
 	int __user *argp = (void __user *)arg;
 	int i;
-	static struct watchdog_info wdinfo = {
+	static const struct watchdog_info wdinfo = {
 		.options = WDRTAS_SUPPORTED_MASK,
 		.firmware_version = 0,
 		.identity = "wdrtas",
diff --git a/drivers/watchdog/wdt.c b/drivers/watchdog/wdt.c
index 3bbefe9a263..bfda2e99dd8 100644
--- a/drivers/watchdog/wdt.c
+++ b/drivers/watchdog/wdt.c
@@ -358,7 +358,7 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int new_heartbeat;
 	int status;
 
-	static struct watchdog_info ident = {
+	struct watchdog_info ident = {
 		.options =		WDIOF_SETTIMEOUT|
 					WDIOF_MAGICCLOSE|
 					WDIOF_KEEPALIVEPING,
diff --git a/drivers/watchdog/wdt_pci.c b/drivers/watchdog/wdt_pci.c
index f368dd87083..7b22e3cdbc8 100644
--- a/drivers/watchdog/wdt_pci.c
+++ b/drivers/watchdog/wdt_pci.c
@@ -412,7 +412,7 @@ static long wdtpci_ioctl(struct file *file, unsigned int cmd,
 	int new_heartbeat;
 	int status;
 
-	static struct watchdog_info ident = {
+	struct watchdog_info ident = {
 		.options =		WDIOF_SETTIMEOUT|
 					WDIOF_MAGICCLOSE|
 					WDIOF_KEEPALIVEPING,
diff --git a/drivers/watchdog/wm831x_wdt.c b/drivers/watchdog/wm831x_wdt.c
index 775bcd807f3..8c4b2d5bb7d 100644
--- a/drivers/watchdog/wm831x_wdt.c
+++ b/drivers/watchdog/wm831x_wdt.c
@@ -213,7 +213,7 @@ static ssize_t wm831x_wdt_write(struct file *file,
 	return count;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 	.identity = "WM831x Watchdog",
 };
diff --git a/drivers/watchdog/wm8350_wdt.c b/drivers/watchdog/wm8350_wdt.c
index a2d2e8eb228..89dd7b03529 100644
--- a/drivers/watchdog/wm8350_wdt.c
+++ b/drivers/watchdog/wm8350_wdt.c
@@ -177,7 +177,7 @@ static ssize_t wm8350_wdt_write(struct file *file,
 	return count;
 }
 
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 	.identity = "WM8350 Watchdog",
 };