[U-Boot] [PATCH 07/15] wdt: designware: Simplify enable function

[Jagan Teki]

Simplify dw watchdog enable function by using
proper macro and drop unwanted macros.

Cc: Chin Liang See <clsee at altera.com>
Cc: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
 drivers/watchdog/designware_wdt.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/designware_wdt.c b/drivers/watchdog/designware_wdt.c
index bd858f0608..2979fda44e 100644
--- a/drivers/watchdog/designware_wdt.c
+++ b/drivers/watchdog/designware_wdt.c
@@ -14,7 +14,6 @@
 
 #define DW_WDT_CR_EN_OFFSET	0x00
 #define DW_WDT_CR_RMOD_OFFSET	0x01
-#define DW_WDT_CR_RMOD_VAL	0x00
 #define DW_WDT_CRR_RESTART_VAL	0x76
 
 /*
@@ -38,9 +37,11 @@ static int designware_wdt_settimeout(unsigned int timeout)
 
 static void designware_wdt_enable(void)
 {
-	writel(((DW_WDT_CR_RMOD_VAL << DW_WDT_CR_RMOD_OFFSET) |
-	      (0x1 << DW_WDT_CR_EN_OFFSET)),
-	      (CONFIG_DW_WDT_BASE + DW_WDT_CR));
+	u32 val = readl(CONFIG_DW_WDT_BASE + DW_WDT_CR);
+
+	/* Enable watchdog */
+	val |= DW_WDT_CR_RMOD_OFFSET;
+	writel(val, CONFIG_DW_WDT_BASE + DW_WDT_CR);
 }
 
 static unsigned int designware_wdt_is_enabled(void)
-- 
2.18.0.321.gffc6fa0e3