diff --git a/arch/arm/mach-ep93xx/include/mach/ts72xx.h b/arch/arm/mach-ep93xx/include/mach/ts72xx.h
index 3bd934e9a7f1b8df9a2bbdb6e7753edfd0532af8..93107d88ff3a089074ad94e05524c16a6dde56c4 100644
--- a/arch/arm/mach-ep93xx/include/mach/ts72xx.h
+++ b/arch/arm/mach-ep93xx/include/mach/ts72xx.h
@@ -65,6 +65,8 @@
#define TS72XX_RTC_DATA_PHYS_BASE 0x11700000
#define TS72XX_RTC_DATA_SIZE 0x00001000
+#define TS72XX_WDT_CONTROL_PHYS_BASE 0x23800000
+#define TS72XX_WDT_FEED_PHYS_BASE 0x23c00000
#ifndef __ASSEMBLY__
diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c
index 259f7822ba52090e3e71d978f26ec95c94b61d4a..fac1ec7a60fbb618c4b8a9463f58d73c19683cd4 100644
--- a/arch/arm/mach-ep93xx/ts72xx.c
+++ b/arch/arm/mach-ep93xx/ts72xx.c
@@ -166,6 +166,26 @@ static struct platform_device ts72xx_rtc_device = {
.num_resources = 0,
};
+static struct resource ts72xx_wdt_resources[] = {
+ {
+ .start = TS72XX_WDT_CONTROL_PHYS_BASE,
+ .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = TS72XX_WDT_FEED_PHYS_BASE,
+ .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device ts72xx_wdt_device = {
+ .name = "ts72xx-wdt",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(ts72xx_wdt_resources),
+ .resource = ts72xx_wdt_resources,
+};
+
static struct ep93xx_eth_data ts72xx_eth_data = {
.phy_id = 1,
};
@@ -175,6 +195,7 @@ static void __init ts72xx_init_machine(void)
ep93xx_init_devices();
ts72xx_register_flash();
platform_device_register(&ts72xx_rtc_device);
+ platform_device_register(&ts72xx_wdt_device);
ep93xx_register_eth(&ts72xx_eth_data, 1);
}
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index 6f8ebe1085b3c40701647ee8ba8e0da5a4a4b247..072b948b2e2dad67abe5c531028e1e603950c03d 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -553,7 +553,7 @@ static ssize_t mpc52xx_wdt_write(struct file *file, const char __user *data,
return 0;
}
-static struct watchdog_info mpc5200_wdt_info = {
+static const struct watchdog_info mpc5200_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = WDT_IDENTITY,
};
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 3da3f48720a7ac6ae6400059ab96b03a51057863..bdcdbd53da894b826d1abb3690fbc87b6be15f75 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
@@ -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 475c61100069e2c60d20ddfb44769cda5f1506dc..5e3cb95bb0e9cc58c653eb632cd2a990eb1ea486 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 4d18c874d963a1efa4b2168540590cb8864da453..2ffce4d75443821a5b2cedf1c3aceded9b57ee5a 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 824d076a5cd6d092ff7e1793f05ec57545f10c57..4d40965d2c9fb5f808e52052b31b846825c6f778 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 9d7d155364f8950f09d581135a94d7794f006558..a5ca7a6ee133a3fbd0524c5063fe3b0f5faf52b5 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 937a80fb61e124d96feaf014da38e4b4c194ec3b..1e9caea8ff8a283e87509624dd9ca8fc996f96e2 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 f90afdb1b255964c6c65495e2c3947eb405f5573..d8d4da9a483d07e1968b4710934467b8ebc91347 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 2bb95cd308c14bacde5733dde0276be71902e0ea..c764c52412e4054e6d40bd0e558991714aea9b49 100644
--- a/drivers/watchdog/ar7_wdt.c
+++ b/drivers/watchdog/ar7_wdt.c
@@ -219,7 +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 |
diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
index 037847923dcb46d26c610cf07f8cb7a9e5c11259..6873376f986c1ea69dd93b085a64aafd7ba7b90c 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 b185dafe14944acdfd77b1a88ce2615be54de259..b3046dc4b56c648d571abc08062b6b47582e9eef 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 751c003864ad6df86455248e8542e08578f05125..5f245522397bfbfc810ef6e6cbd7be1de5c281dd 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 2159e668751cd7db5e9ddfb39c96984573801539..9c7ccd1e9088fbd5f108fe7c96980d7cda07d8e3 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 e8380ef65c1c92f5b5b3f6522c56d431e9ca5700..8b724aad6825929b334375075eda02deab687084 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 923cc68dba268fbd9c520de1af5ecca07fac631b..9291506b8b235012fd9825f42bc2c6dad6c26f1b 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 71f6d7eec9a83c38fe50ae4b65d75456b1dbc4c7..edd3475f41db7ef2494a9befb7256b0e88262c72 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 081f2955419edd678c96a99ae1e77080de7efec7..37ea052d4dee95d2483a8ffca20fcb5e81cf963e 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 887136de18573fe98ca559f7196a4b6dd291818a..56162c87f5d8b4bb4eb881f3cd23d434b507c5e7 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 cdd55e0d09f8410b949f730fb1cdd6ba07db8ddd..88ed54e50f74d3768b75fb05485393da4042aa62 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 9add3541fb4276385ef46f0a3183c6a0d25ff4f2..d1c4e55b1db0edd7abaf8bf6109998999254b1bc 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 734d9806a872bc300ad756ab7978192025a58f37..abdbad034a6c8aec9f7ecf3fa0641db4bf66690f 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 38252ff828ca54e3e86340d741e60fe28d588d35..9b49b125ad5a3a90bfbce7c5bdd07263822dfac8 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 a6c5674c78e689414d1967d8b07fb90a28e12d3f..70c2c24660d0e4f2250b2bb06d5ec06717dcbe1d 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 7ba0b11ec525d2bd84f4ebfe72b4e0e5912ff2b4..bb9750a03942fb8786c0bcaddd32732e2266d866 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 4bdb7f1a90772d780037bf2456e3656c1ad6a1ae..44bc6aa46edf421e744979fa7e053232e3561b9d 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 4bef3ddff4a5d8715ffeec1680376135a2c14a60..0149d8dfc81d97c95f4cd1f6f4ace67d56888e07 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 bea8a124a5590910927d5761382fd0c5bbcaea0c..1cc5609666d10fe45f513c24393232f8180a3ec9 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 daed48ded7fe9aa13adf49b18a4ead3e2b391d60..f52c162b1beab77ab451cd72759feac5f87d06a2 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 cc133c531d08d1a87af853a130b49f9f86e0a00d..b709b3b2d1ef0203602708cdd295d743174f7bbe 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 3c79dc587958fcd8cea4e9508a7fe00b008a422b..e86952a7168c8b247ea5e9252c1977ba38bde94f 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 147b4d5c63b3bc85a1a5dbc08404bc62c96e8f6b..e02c0ecda26b73a7688ddc3352e99016350b67ab 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 e1c82769b08e26a1f103c91e64f9af9648b03890..2852bb2e3fd9c023c8d54e121d1bddf31d20e7b3 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 47d719717a3b45665211c0d345a05abe39bdfdbd..2d118cf022fc67fbfeeb0eb1c026dfaab4c9ecb5 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 0000000000000000000000000000000000000000..6eb91d75760466e83e983ad3875973f4cf8c3264
--- /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 407b025cb104935e9d9e7c06b50f4c912201dbb9..bc820d16699ab1df0f6ede8d55f052c5f2236043 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 38c588ee694f8c0333b4c7e4df5f2b3832875806..4e3941c5e29330e1685f63105e962ab1745fc33e 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 a2dc07c2ed49c6f15bc539d7097dfce1d9bdffdd..b0646dac924e9510e304037933c6d62cb6f599c4 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 a51dbe4c43da71da2591750a6081a0e7473c4f98..97f8a48d8b7870efbae1b9173d58295f65e2dd71 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 1a2b916e3f8d0481855770b9437482ec25fd6381..d3aa2f1fe61db4152cd51d0202dbc1b7f19dacad 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 aa9512321f3a624abd4d39d7df84ba4ac108cb18..06f7922606c0cac89722d6ba53a2dc1ecc39a125 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 698f51bff1bcd8fb99309c2b761e38248229a75a..64374d636f096aaa8b18a6fdee7bb83800c1e6d5 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 052fe451851f39920880668ca1d3a4547d4ee490..8e4eacc5bb521c0418c6916035afd2f44206619f 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 2d22e996e9963cedaf656aa1c82867894d14c906..435ec2aed4fe49b8eb956d94301648de350d84e2 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/pnx833x_wdt.c b/drivers/watchdog/pnx833x_wdt.c
index 538ec2c05197c8194312fa11c47a51321edf2b2d..09102f09e681607189cd385c63f25bf65b3df286 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 bf12d06b587774ff1a576619427f73e9380195ae..d4c29b5311a4d574dea0c4d67300392472c03b3f 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 4976bfd1fce6cc66476c21069bd89ae3d5312169..69c6adbd8205c06f155bd8b01f51986500a10098 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 c14ae867690356de79612e308b75512d2432becc..ae57bf9e1b03c49bb2b0e175ed7d1e4c5a6422f2 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 e6763d2a567b92eb43beb1e236daa282d6662a50..8d44c9b6fb5b75dbfaed1ad674b6665204c9bae2 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 569eb295a7a80b738b9cffb51de90b1fa651c3ba..9c40f48804f5dbbdfb8e301a0264f98ecabc3b0d 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 5dd952681f32a196c2b3c320d9e6b8c61297bc08..b3421fd2cda80760a0015ee2af75ce3d89bcf985 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 0000000000000000000000000000000000000000..565a2c3321e556e89015a0a576585259d1c3dc2c
--- /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 d635566e9307235f6d09d5f39fb1ce0a963060a9..9e9ed7bfabcb1a51deae636635d0f33914cf201c 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 f201accc4e3d908a00ce91ad029177d0c5315f57..0f5288df0091730299f59bb9685962492a2dca89 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 0560182a1d09049230e88846579b3283bbed97b5..6e6743d1066fb9d4aa9dcf6affa7d534ec374210 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 5bfb1f2c531965d2753101f55a9d28197900ad60..94ec22b9e66bda7db6f96ace71df36afe6f35f9f 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 3bbefe9a2634d5af1e432ed4496f7294e360e64a..bfda2e99dd8908ffeb0d23e24c3b12dc92f682c8 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 f368dd87083acaeed267eba6e7d20a51cf5b3060..7b22e3cdbc81685a4dbd59ba9daa4e536ca4572d 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 775bcd807f316fdd46f6ebb3ba69a3bf73d6e9ed..8c4b2d5bb7da542a364d77ac7deb9e8c5a07f1c0 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 a2d2e8eb228298cb7a698582c154868540c558fe..89dd7b03529520df645e719e73e3d2e5f96c8477 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",
};