diff options
| -rw-r--r-- | drivers/char/watchdog/rm9k_wdt.c | 56 |
1 files changed, 29 insertions, 27 deletions
diff --git a/drivers/char/watchdog/rm9k_wdt.c b/drivers/char/watchdog/rm9k_wdt.c index 1aad9138f71..22aab8703ed 100644 --- a/drivers/char/watchdog/rm9k_wdt.c +++ b/drivers/char/watchdog/rm9k_wdt.c @@ -111,6 +111,30 @@ static irqreturn_t wdt_gpi_irqhdl(int irq, void *ctxt, struct pt_regs *regs) /* Watchdog functions */ +static void wdt_gpi_start(void) +{ + u32 reg; + + lock_titan_regs(); + reg = titan_readl(CPGIG1ER); + titan_writel(reg | (0x100 << wd_ctr), CPGIG1ER); + iob(); + unlock_titan_regs(); +} + +static void wdt_gpi_stop(void) +{ + u32 reg; + + lock_titan_regs(); + reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4)); + titan_writel(reg, CPCCR); + reg = titan_readl(CPGIG1ER); + titan_writel(reg & ~(0x100 << wd_ctr), CPGIG1ER); + iob(); + unlock_titan_regs(); +} + static void wdt_gpi_set_timeout(unsigned int to) { u32 reg; @@ -134,7 +158,6 @@ static void wdt_gpi_set_timeout(unsigned int to) static int wdt_gpi_open(struct inode *i, struct file *f) { int res; - u32 reg; if (unlikely(0 > atomic_dec_if_positive(&opencnt))) return -EBUSY; @@ -152,12 +175,7 @@ static int wdt_gpi_open(struct inode *i, struct file *f) return res; wdt_gpi_set_timeout(timeout); - - lock_titan_regs(); - reg = titan_readl(CPGIG1ER); - titan_writel(reg | (0x100 << wd_ctr), CPGIG1ER); - iob(); - unlock_titan_regs(); + wdt_gpi_start(); printk(KERN_INFO "%s: watchdog started, timeout = %u seconds\n", wdt_gpi_name, timeout); @@ -173,15 +191,7 @@ static int wdt_gpi_release(struct inode *i, struct file *f) locked = 1; } else { if (expect_close) { - u32 reg; - - lock_titan_regs(); - reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4)); - titan_writel(reg, CPCCR); - reg = titan_readl(CPGIG1ER); - titan_writel(reg & ~(0x100 << wd_ctr), CPGIG1ER); - iob(); - unlock_titan_regs(); + wdt_gpi_stop(); free_irq(wd_irq, &miscdev); printk(KERN_INFO "%s: watchdog stopped\n", wdt_gpi_name); } else { @@ -293,17 +303,9 @@ wdt_gpi_ioctl(struct file *f, unsigned int cmd, unsigned long arg) static int wdt_gpi_notify(struct notifier_block *this, unsigned long code, void *unused) { - if(code == SYS_DOWN || code == SYS_HALT) { - u32 reg; - - lock_titan_regs(); - reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4)); - titan_writel(reg, CPCCR); - reg = titan_readl(CPGIG1ER); - titan_writel(reg & ~(0x100 << wd_ctr), CPGIG1ER); - iob(); - unlock_titan_regs(); - } + if (code == SYS_DOWN || code == SYS_HALT) + wdt_gpi_stop(); + return NOTIFY_DONE; } |