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Subject[PATCH] watchdog: bcm7038_wdt: add big endian support
Date
bcm7038_wdt can be used on bmips (bcm63xx) devices too.

Signed-off-by: Álvaro Fernández Rojas <noltari@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
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