[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 b8687f71c304..6faadcee7729 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);