diff options
Diffstat (limited to 'drivers/watchdog/sa1100_wdt.c')
| -rw-r--r-- | drivers/watchdog/sa1100_wdt.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/drivers/watchdog/sa1100_wdt.c b/drivers/watchdog/sa1100_wdt.c index e19b4579471..e1d39a1e962 100644 --- a/drivers/watchdog/sa1100_wdt.c +++ b/drivers/watchdog/sa1100_wdt.c @@ -1,8 +1,8 @@ /* * Watchdog driver for the SA11x0/PXA2xx * - * (c) Copyright 2000 Oleg Drokin <green@crimea.edu> - * Based on SoftDog driver by Alan Cox <alan@lxorguk.ukuu.org.uk> + * (c) Copyright 2000 Oleg Drokin <green@crimea.edu> + * Based on SoftDog driver by Alan Cox <alan@lxorguk.ukuu.org.uk> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -15,8 +15,11 @@ * * (c) Copyright 2000 Oleg Drokin <green@crimea.edu> * - * 27/11/2000 Initial release + * 27/11/2000 Initial release */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> @@ -25,12 +28,13 @@ #include <linux/miscdevice.h> #include <linux/watchdog.h> #include <linux/init.h> +#include <linux/io.h> #include <linux/bitops.h> #include <linux/uaccess.h> #include <linux/timex.h> #ifdef CONFIG_ARCH_PXA -#include <mach/pxa-regs.h> +#include <mach/regs-ost.h> #endif #include <mach/reset.h> @@ -38,7 +42,7 @@ static unsigned long oscr_freq; static unsigned long sa1100wdt_users; -static int pre_margin; +static unsigned int pre_margin; static int boot_status; /* @@ -50,10 +54,10 @@ static int sa1100dog_open(struct inode *inode, struct file *file) return -EBUSY; /* Activate SA1100 Watchdog timer */ - OSMR3 = OSCR + pre_margin; - OSSR = OSSR_M3; - OWER = OWER_WME; - OIER |= OIER_E3; + writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3); + writel_relaxed(OSSR_M3, OSSR); + writel_relaxed(OWER_WME, OWER); + writel_relaxed(readl_relaxed(OIER) | OIER_E3, OIER); return nonseekable_open(inode, file); } @@ -66,7 +70,7 @@ static int sa1100dog_open(struct inode *inode, struct file *file) */ static int sa1100dog_release(struct inode *inode, struct file *file) { - printk(KERN_CRIT "WATCHDOG: Device closed - timer will not stop\n"); + pr_crit("Device closed - timer will not stop\n"); clear_bit(1, &sa1100wdt_users); return 0; } @@ -76,7 +80,7 @@ static ssize_t sa1100dog_write(struct file *file, const char __user *data, { if (len) /* Refresh OSMR3 timer. */ - OSMR3 = OSCR + pre_margin; + writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3); return len; } @@ -84,6 +88,7 @@ static const struct watchdog_info ident = { .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, .identity = "SA1100/PXA255 Watchdog", + .firmware_version = 1, }; static long sa1100dog_ioctl(struct file *file, unsigned int cmd, @@ -109,7 +114,7 @@ static long sa1100dog_ioctl(struct file *file, unsigned int cmd, break; case WDIOC_KEEPALIVE: - OSMR3 = OSCR + pre_margin; + writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3); ret = 0; break; @@ -118,13 +123,13 @@ static long sa1100dog_ioctl(struct file *file, unsigned int cmd, if (ret) break; - if (time <= 0 || time > 255) { + if (time <= 0 || (oscr_freq * (long long)time >= 0xffffffff)) { ret = -EINVAL; break; } pre_margin = oscr_freq * time; - OSMR3 = OSCR + pre_margin; + writel_relaxed(readl_relaxed(OSCR) + pre_margin, OSMR3); /*fall through*/ case WDIOC_GETTIMEOUT: @@ -168,9 +173,8 @@ static int __init sa1100dog_init(void) ret = misc_register(&sa1100dog_miscdev); if (ret == 0) - printk(KERN_INFO - "SA1100/PXA2xx Watchdog Timer: timer margin %d sec\n", - margin); + pr_info("SA1100/PXA2xx Watchdog Timer: timer margin %d sec\n", + margin); return ret; } @@ -189,4 +193,3 @@ module_param(margin, int, 0); MODULE_PARM_DESC(margin, "Watchdog margin in seconds (default 60s)"); MODULE_LICENSE("GPL"); -MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); |