diff options
Diffstat (limited to 'target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c')
| -rw-r--r-- | target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c | 83 |
1 files changed, 37 insertions, 46 deletions
diff --git a/target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c b/target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c index 58e2161489..e62d2fec38 100644 --- a/target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c +++ b/target/linux/ifxmips/files/drivers/watchdog/ifxmips_wdt.c @@ -3,7 +3,7 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the @@ -23,36 +23,35 @@ #include <linux/miscdevice.h> #include <linux/watchdog.h> #include <linux/platform_device.h> -#include <asm/uaccess.h> -#include <asm-mips/ifxmips/ifxmips_cgu.h> -#include <asm-mips/ifxmips/ifxmips.h> +#include <linux/uaccess.h> + +#include <asm/ifxmips/ifxmips_cgu.h> +#include <asm/ifxmips/ifxmips.h> -#define IFXMIPS_WDT_PW1 0x00BE0000 -#define IFXMIPS_WDT_PW2 0x00DC0000 +#define IFXMIPS_WDT_PW1 0x00BE0000 +#define IFXMIPS_WDT_PW2 0x00DC0000 #ifndef CONFIG_WATCHDOG_NOWAYOUT -static int wdt_ok_to_close = 0; +static int wdt_ok_to_close; #endif -int wdt_timeout = 30; +static int wdt_timeout = 30; -int -ifxmips_wdt_enable(unsigned int timeout) +int ifxmips_wdt_enable(unsigned int timeout) { u32 fpi; fpi = cgu_get_io_region_clock(); ifxmips_w32(IFXMIPS_WDT_PW1, IFXMIPS_BIU_WDT_CR); ifxmips_w32(IFXMIPS_WDT_PW2 | - (0x3 << 26) | // PWL - (0x3 << 24) | // CLKDIV - (0x1 << 31) | // enable - ((timeout * (fpi / 0x40000)) + 0x1000), // reload + (0x3 << 26) | /* PWL */ + (0x3 << 24) | /* CLKDIV */ + (0x1 << 31) | /* enable */ + ((timeout * (fpi / 0x40000)) + 0x1000), /* reload */ IFXMIPS_BIU_WDT_CR); return 0; } -void -ifxmips_wdt_disable(void) +void ifxmips_wdt_disable(void) { #ifndef CONFIG_WATCHDOG_NOWAYOUT wdt_ok_to_close = 0; @@ -61,22 +60,20 @@ ifxmips_wdt_disable(void) ifxmips_w32(IFXMIPS_WDT_PW2, IFXMIPS_BIU_WDT_CR); } -static ssize_t -ifxmips_wdt_write(struct file *file, const char __user *data, size_t len, - loff_t *ppos) +static ssize_t ifxmips_wdt_write(struct file *file, const char __user *data, + size_t len, loff_t *ppos) { size_t i; - if(!len) + if (!len) return 0; #ifndef CONFIG_WATCHDOG_NOWAYOUT - for(i = 0; i != len; i++) - { + for (i = 0; i != len; i++) { char c; - if(get_user(c, data + i)) + if (get_user(c, data + i)) return -EFAULT; - if(c == 'V') + if (c == 'V') wdt_ok_to_close = 1; } #endif @@ -89,14 +86,12 @@ static struct watchdog_info ident = { .identity = "ifxmips Watchdog", }; -static int -ifxmips_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) +static int ifxmips_wdt_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) { int ret = -ENOTTY; - switch(cmd) - { + switch (cmd) { case WDIOC_GETSUPPORT: ret = copy_to_user((struct watchdog_info __user *)arg, &ident, sizeof(ident)) ? -EFAULT : 0; @@ -107,7 +102,7 @@ ifxmips_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, break; case WDIOC_SETTIMEOUT: - ret = get_user(wdt_timeout, (int __user*)arg); + ret = get_user(wdt_timeout, (int __user *)arg); break; case WDIOC_KEEPALIVE: @@ -118,8 +113,7 @@ ifxmips_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, return ret; } -static int -ifxmips_wdt_open(struct inode *inode, struct file *file) +static int ifxmips_wdt_open(struct inode *inode, struct file *file) { ifxmips_wdt_enable(wdt_timeout); return nonseekable_open(inode, file); @@ -128,11 +122,12 @@ ifxmips_wdt_open(struct inode *inode, struct file *file) static int ifxmips_wdt_release(struct inode *inode, struct file *file) { #ifndef CONFIG_WATCHDOG_NOWAYOUT - if(wdt_ok_to_close) + if (wdt_ok_to_close) ifxmips_wdt_disable(); else #endif - printk("ifxmips_wdt: watchdog closed without warning, rebooting system\n"); + printk(KERN_ERR "ifxmips_wdt: watchdog closed without warning," + " rebooting system\n"); return 0; } @@ -150,20 +145,18 @@ static struct miscdevice ifxmips_wdt_miscdev = { .fops = &ifxmips_wdt_fops, }; -static int -ifxmips_wdt_probe(struct platform_device *dev) +static int ifxmips_wdt_probe(struct platform_device *dev) { int err; err = misc_register(&ifxmips_wdt_miscdev); - if(err) - printk("ifxmips_wdt: error creating device\n"); + if (err) + printk(KERN_INFO "ifxmips_wdt: error creating device\n"); else - printk("ifxmips_wdt: loaded\n"); + printk(KERN_INFO "ifxmips_wdt: loaded\n"); return err; } -static int -ifxmips_wdt_remove(struct platform_device *dev) +static int ifxmips_wdt_remove(struct platform_device *dev) { ifxmips_wdt_disable(); misc_deregister(&ifxmips_wdt_miscdev); @@ -180,17 +173,15 @@ static struct platform_driver ifxmips_wdt_driver = { }, }; -static int __init -init_ifxmips_wdt(void) +static int __init init_ifxmips_wdt(void) { int ret = platform_driver_register(&ifxmips_wdt_driver); - if(ret) + if (ret) printk(KERN_INFO "ifxmips_wdt: error registering platfom driver!"); return ret; } -static void __exit -exit_ifxmips_wdt(void) +static void __exit exit_ifxmips_wdt(void) { platform_driver_unregister(&ifxmips_wdt_driver); } |