ARM: orion: wdt: use resource vice direct access
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 4ad78f8..1368e4c 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -28,9 +28,9 @@
/*
* Watchdog timer block registers.
*/
-#define TIMER_CTRL (TIMER_VIRT_BASE + 0x0000)
+#define TIMER_CTRL 0x0000
#define WDT_EN 0x0010
-#define WDT_VAL (TIMER_VIRT_BASE + 0x0024)
+#define WDT_VAL 0x0024
#define WDT_MAX_CYCLE_COUNT 0xffffffff
#define WDT_IN_USE 0
@@ -40,6 +40,7 @@
static int heartbeat = -1; /* module parameter (seconds) */
static unsigned int wdt_max_duration; /* (seconds) */
static unsigned int wdt_tclk;
+static void __iomem *wdt_reg;
static unsigned long wdt_status;
static DEFINE_SPINLOCK(wdt_lock);
@@ -48,7 +49,7 @@
spin_lock(&wdt_lock);
/* Reload watchdog duration */
- writel(wdt_tclk * heartbeat, WDT_VAL);
+ writel(wdt_tclk * heartbeat, wdt_reg + WDT_VAL);
spin_unlock(&wdt_lock);
}
@@ -60,7 +61,7 @@
spin_lock(&wdt_lock);
/* Set watchdog duration */
- writel(wdt_tclk * heartbeat, WDT_VAL);
+ writel(wdt_tclk * heartbeat, wdt_reg + WDT_VAL);
/* Clear watchdog timer interrupt */
reg = readl(BRIDGE_CAUSE);
@@ -68,9 +69,9 @@
writel(reg, BRIDGE_CAUSE);
/* Enable watchdog timer */
- reg = readl(TIMER_CTRL);
+ reg = readl(wdt_reg + TIMER_CTRL);
reg |= WDT_EN;
- writel(reg, TIMER_CTRL);
+ writel(reg, wdt_reg + TIMER_CTRL);
/* Enable reset on watchdog */
reg = readl(RSTOUTn_MASK);
@@ -92,9 +93,9 @@
writel(reg, RSTOUTn_MASK);
/* Disable watchdog timer */
- reg = readl(TIMER_CTRL);
+ reg = readl(wdt_reg + TIMER_CTRL);
reg &= ~WDT_EN;
- writel(reg, TIMER_CTRL);
+ writel(reg, wdt_reg + TIMER_CTRL);
spin_unlock(&wdt_lock);
}
@@ -102,7 +103,7 @@
static int orion_wdt_get_timeleft(int *time_left)
{
spin_lock(&wdt_lock);
- *time_left = readl(WDT_VAL) / wdt_tclk;
+ *time_left = readl(wdt_reg + WDT_VAL) / wdt_tclk;
spin_unlock(&wdt_lock);
return 0;
}
@@ -236,6 +237,7 @@
static int __devinit orion_wdt_probe(struct platform_device *pdev)
{
struct orion_wdt_platform_data *pdata = pdev->dev.platform_data;
+ struct resource *res;
int ret;
if (pdata) {
@@ -245,6 +247,10 @@
return -ENODEV;
}
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ wdt_reg = ioremap(res->start, resource_size(res));
+
if (orion_wdt_miscdev.parent)
return -EBUSY;
orion_wdt_miscdev.parent = &pdev->dev;