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[WATCHDOG] MIPS RM9000 on-chip watchdog device - patch 3

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Move start and stop code into seperate functions

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2006-11-17 23:36:08 +01:00
parent 97846e3ccb
commit 414a675964
1 changed files with 28 additions and 26 deletions
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54
drivers/char/watchdog/rm9k_wdt.c
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@ -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;
if (code == SYS_DOWN || code == SYS_HALT)
wdt_gpi_stop();
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();
}
return NOTIFY_DONE;
}