[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>

diff --git a/arch/arm/mach-s3c2410/include/mach/system-reset.h b/arch/arm/mach-s3c2410/include/mach/system-reset.h
index b8687f71c30479c90400e2a36a4c51086c591007..6faadcee7729bd525553bad354738fb66d87d94b 100644 (file)
--- 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);

diff --git a/arch/arm/plat-s3c/include/plat/watchdog-reset.h b/arch/arm/plat-s3c/include/plat/watchdog-reset.h
new file mode 100644 (file)
index 0000000..277506a
--- /dev/null
+++ b/arch/arm/plat-s3c/include/plat/watchdog-reset.h
@@ -0,0 +1,48 @@
+/* arch/arm/plat-s3c/include/plat/watchdog-reset.h
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 - System define for arch_reset() function
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <plat/regs-watchdog.h>
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+static inline void arch_wdt_reset(void)
+{
+       struct clk *wdtclk;
+
+       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);
+}