[PATCH] watchdog: bcm7038_wdt: add big endian support

[Álvaro Fernández Rojas]

bcm7038_wdt can be used on bmips (bcm63xx) devices too.

Signed-off-by: Álvaro Fernández Rojas <nolt...@gmail.com>
---
 drivers/watchdog/bcm7038_wdt.c | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c
index 979caa18d3c8..62494da1ac57 100644
--- a/drivers/watchdog/bcm7038_wdt.c
+++ b/drivers/watchdog/bcm7038_wdt.c
@@ -34,6 +34,24 @@ struct bcm7038_watchdog {
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
 
+static inline void bcm7038_wdt_write(unsigned long data, void __iomem *reg)
+{
+#ifdef CONFIG_CPU_BIG_ENDIAN
+       __raw_writel(data, reg);
+#else
+       writel(data, reg);
+#endif
+}
+
+static inline unsigned long bcm7038_wdt_read(void __iomem *reg)
+{
+#ifdef CONFIG_CPU_BIG_ENDIAN
+       return __raw_readl(reg);
+#else
+       return readl(reg);
+#endif
+}
+
 static void bcm7038_wdt_set_timeout_reg(struct watchdog_device *wdog)
 {
        struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
@@ -41,15 +59,15 @@ static void bcm7038_wdt_set_timeout_reg(struct 
watchdog_device *wdog)
 
        timeout = wdt->rate * wdog->timeout;
 
-       writel(timeout, wdt->base + WDT_TIMEOUT_REG);
+       bcm7038_wdt_write(timeout, wdt->base + WDT_TIMEOUT_REG);
 }
 
 static int bcm7038_wdt_ping(struct watchdog_device *wdog)
 {
        struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
 
-       writel(WDT_START_1, wdt->base + WDT_CMD_REG);
-       writel(WDT_START_2, wdt->base + WDT_CMD_REG);
+       bcm7038_wdt_write(WDT_START_1, wdt->base + WDT_CMD_REG);
+       bcm7038_wdt_write(WDT_START_2, wdt->base + WDT_CMD_REG);
 
        return 0;
 }
@@ -66,8 +84,8 @@ static int bcm7038_wdt_stop(struct watchdog_device *wdog)
 {
        struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
 
-       writel(WDT_STOP_1, wdt->base + WDT_CMD_REG);
-       writel(WDT_STOP_2, wdt->base + WDT_CMD_REG);
+       bcm7038_wdt_write(WDT_STOP_1, wdt->base + WDT_CMD_REG);
+       bcm7038_wdt_write(WDT_STOP_2, wdt->base + WDT_CMD_REG);
 
        return 0;
 }
@@ -88,7 +106,7 @@ static unsigned int bcm7038_wdt_get_timeleft(struct 
watchdog_device *wdog)
        struct bcm7038_watchdog *wdt = watchdog_get_drvdata(wdog);
        u32 time_left;
 
-       time_left = readl(wdt->base + WDT_CMD_REG);
+       time_left = bcm7038_wdt_read(wdt->base + WDT_CMD_REG);
 
        return time_left / wdt->rate;
 }
-- 
2.20.1