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| author | Jason Cooper <jason@lakedaemon.net> | 2012-03-15 00:33:26 +0000 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2012-03-16 04:28:41 +0000 |
| commit | a855a7ced4f572dcd1038db06b532df3ba9f227c (patch) | |
| tree | 5da4b1a501c0fd1e21567a32a27ffa3ae978e8e1 /drivers/watchdog | |
| parent | 7399532065a68cce8b0ea18aace7ded45bfb205f (diff) | |
| download | linux-stable-a855a7ced4f572dcd1038db06b532df3ba9f227c.tar.gz linux-stable-a855a7ced4f572dcd1038db06b532df3ba9f227c.tar.bz2 linux-stable-a855a7ced4f572dcd1038db06b532df3ba9f227c.zip | |
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>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/orion_wdt.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 4ad78f868515..1368e4ca3100 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 nowayout = WATCHDOG_NOWAYOUT; 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 @@ static void orion_wdt_ping(void) 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 @@ static void orion_wdt_enable(void) 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 @@ static void orion_wdt_enable(void) 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 @@ static void orion_wdt_disable(void) 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 void orion_wdt_disable(void) 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 struct miscdevice orion_wdt_miscdev = { 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 @@ static int __devinit orion_wdt_probe(struct platform_device *pdev) 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; |