diff options
| -rw-r--r-- | drivers/watchdog/dw_wdt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c index a2edcef2c13d..7b1984d18448 100644 --- a/drivers/watchdog/dw_wdt.c +++ b/drivers/watchdog/dw_wdt.c @@ -68,6 +68,9 @@ static struct { struct timer_list timer; int expect_close; struct notifier_block restart_handler; + /* Save/restore */ + u32 control; + u32 timeout; } dw_wdt; static inline int dw_wdt_is_enabled(void) @@ -301,6 +304,9 @@ static int dw_wdt_release(struct inode *inode, struct file *filp) #ifdef CONFIG_PM_SLEEP static int dw_wdt_suspend(struct device *dev) { + dw_wdt.control = readl(dw_wdt.regs + WDOG_CONTROL_REG_OFFSET); + dw_wdt.timeout = readl(dw_wdt.regs + WDOG_TIMEOUT_RANGE_REG_OFFSET); + clk_disable_unprepare(dw_wdt.clk); return 0; @@ -313,6 +319,9 @@ static int dw_wdt_resume(struct device *dev) if (err) return err; + writel(dw_wdt.timeout, dw_wdt.regs + WDOG_TIMEOUT_RANGE_REG_OFFSET); + writel(dw_wdt.control, dw_wdt.regs + WDOG_CONTROL_REG_OFFSET); + dw_wdt_keepalive(); return 0; |