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| author | Dale Farnsworth <dale@farnsworth.org> | 2007-07-24 11:09:18 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-07-24 21:15:58 +0000 |
| commit | 8a5cfa648347ab04e63a7f5e3699768d1f9bf00d (patch) | |
| tree | bd9a7457e23239bc8a755d35dc3aa793dd1f650c /drivers/char/watchdog/mv64x60_wdt.c | |
| parent | 422db8d229affd429b5a7389600877aa7dea2704 (diff) | |
| download | kernel_samsung_smdk4412-8a5cfa648347ab04e63a7f5e3699768d1f9bf00d.zip kernel_samsung_smdk4412-8a5cfa648347ab04e63a7f5e3699768d1f9bf00d.tar.gz kernel_samsung_smdk4412-8a5cfa648347ab04e63a7f5e3699768d1f9bf00d.tar.bz2 | |
[WATCHDOG] mv64x60_wdt: Get register address from platform data
Previously, the address of the watchdog timer registers was
retrieved by calling a global function, mv64x60_get_bridge_vbase().
That function doesn't exist in arch/powerpc. Instead, we now get
the register address from a platform data resource and ioremap
the registers within the driver.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char/watchdog/mv64x60_wdt.c')
| -rw-r--r-- | drivers/char/watchdog/mv64x60_wdt.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/char/watchdog/mv64x60_wdt.c b/drivers/char/watchdog/mv64x60_wdt.c index 038f76e..1ad632d 100644 --- a/drivers/char/watchdog/mv64x60_wdt.c +++ b/drivers/char/watchdog/mv64x60_wdt.c @@ -27,6 +27,8 @@ #include <asm/uaccess.h> #include <asm/io.h> +#define MV64x60_WDT_WDC_OFFSET 0 + /* MV64x60 WDC (config) register access definitions */ #define MV64x60_WDC_CTL1_MASK (3 << 24) #define MV64x60_WDC_CTL1(val) ((val & 3) << 24) @@ -39,7 +41,7 @@ static unsigned long wdt_flags; static int wdt_status; -static void __iomem *mv64x60_regs; +static void __iomem *mv64x60_wdt_regs; static int mv64x60_wdt_timeout; static void mv64x60_wdt_reg_write(u32 val) @@ -47,10 +49,10 @@ static void mv64x60_wdt_reg_write(u32 val) /* Allow write only to CTL1 / CTL2 fields, retaining values in * other fields. */ - u32 data = readl(mv64x60_regs + MV64x60_WDT_WDC); + u32 data = readl(mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET); data &= ~(MV64x60_WDC_CTL1_MASK | MV64x60_WDC_CTL2_MASK); data |= val; - writel(data, mv64x60_regs + MV64x60_WDT_WDC); + writel(data, mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET); } static void mv64x60_wdt_service(void) @@ -185,6 +187,7 @@ static int __devinit mv64x60_wdt_probe(struct platform_device *dev) { struct mv64x60_wdt_pdata *pdata = dev->dev.platform_data; int bus_clk = 133; + struct resource *r; mv64x60_wdt_timeout = 10; if (pdata) { @@ -192,10 +195,16 @@ static int __devinit mv64x60_wdt_probe(struct platform_device *dev) bus_clk = pdata->bus_clk; } - mv64x60_regs = mv64x60_get_bridge_vbase(); + r = platform_get_resource(dev, IORESOURCE_MEM, 0); + if (!r) + return -ENODEV; + + mv64x60_wdt_regs = ioremap(r->start, r->end - r->start + 1); + if (mv64x60_wdt_regs == NULL) + return -ENOMEM; writel((mv64x60_wdt_timeout * (bus_clk * 1000000)) >> 8, - mv64x60_regs + MV64x60_WDT_WDC); + mv64x60_wdt_regs + MV64x60_WDT_WDC_OFFSET); return misc_register(&mv64x60_wdt_miscdev); } @@ -207,6 +216,8 @@ static int __devexit mv64x60_wdt_remove(struct platform_device *dev) mv64x60_wdt_service(); mv64x60_wdt_handler_disable(); + iounmap(mv64x60_wdt_regs); + return 0; } |