[ARM] S3C: Move watchdog system reset to own file.

Move the watchdog reset code from <mach/system-reset.h> to
a new file <plat/watchdog-reset.h> as this code is needed
by both s3c2410, s3c64xx and soon-to-be added s3c24a0.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 2 insertions, 34 deletions

diff --git a/arch/arm/mach-s3c2410/include/mach/system-reset.h b/arch/arm/mach-s3c2410/include/mach/system-reset.h
index b8687f71c30..6faadcee772 100644
--- a/arch/arm/mach-s3c2410/include/mach/system-reset.h
+++ b/arch/arm/mach-s3c2410/include/mach/system-reset.h
@@ -11,21 +11,13 @@
 */
 
 #include <mach/hardware.h>
-#include <linux/io.h>
-
-#include <plat/regs-watchdog.h>
-#include <mach/regs-clock.h>
-
-#include <linux/clk.h>
-#include <linux/err.h>
+#include <plat/watchdog-reset.h>
 
 extern void (*s3c24xx_reset_hook)(void);
 
 static void
 arch_reset(char mode, const char *cmd)
 {
-	struct clk *wdtclk;
-
 	if (mode == 's') {
 		cpu_reset(0);
 	}
@@ -33,31 +25,7 @@ arch_reset(char mode, const char *cmd)
 	if (s3c24xx_reset_hook)
 		s3c24xx_reset_hook();
 
-	printk("arch_reset: attempting watchdog reset\n");
-
-	__raw_writel(0, S3C2410_WTCON);	  /* disable watchdog, to be safe  */
-
-	wdtclk = clk_get(NULL, "watchdog");
-	if (!IS_ERR(wdtclk)) {
-		clk_enable(wdtclk);
-	} else
-		printk(KERN_WARNING "%s: warning: cannot get watchdog clock\n", __func__);
-
-	/* put initial values into count and data */
-	__raw_writel(0x80, S3C2410_WTCNT);
-	__raw_writel(0x80, S3C2410_WTDAT);
-
-	/* set the watchdog to go and reset... */
-	__raw_writel(S3C2410_WTCON_ENABLE|S3C2410_WTCON_DIV16|S3C2410_WTCON_RSTEN |
-		     S3C2410_WTCON_PRESCALE(0x20), S3C2410_WTCON);
-
-	/* wait for reset to assert... */
-	mdelay(500);
-
-	printk(KERN_ERR "Watchdog reset failed to assert reset\n");
-
-	/* delay to allow the serial port to show the message */
-	mdelay(50);
+	arch_wdt_reset();
 
 	/* we'll take a jump through zero as a poor second */
 	cpu_reset(0);