S5P: support generic watchdog timer
This patch adds support the generic watchdog timer for s5pc1xx and exynos4
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: HeungJun, Kim <riverful.kim@samsung.com>
diff --git a/arch/arm/include/asm/arch-s5pc1xx/watchdog.h b/arch/arm/include/asm/arch-s5pc1xx/watchdog.h
new file mode 100644
index 0000000..0f80ca5
--- /dev/null
+++ b/arch/arm/include/asm/arch-s5pc1xx/watchdog.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics
+ * Heungjun Kim <riverful.kim@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARM_ARCH_WATCHDOG_H_
+#define __ASM_ARM_ARCH_WATCHDOG_H_
+
+#define WTCON_RESET_OFFSET 0
+#define WTCON_INTEN_OFFSET 2
+#define WTCON_CLKSEL_OFFSET 3
+#define WTCON_EN_OFFSET 5
+#define WTCON_PRE_OFFSET 8
+
+#define WTCON_CLK_16 0x0
+#define WTCON_CLK_32 0x1
+#define WTCON_CLK_64 0x2
+#define WTCON_CLK_128 0x3
+
+#define WTCON_CLK(x) ((x & 0x3) << WTCON_CLKSEL_OFFSET)
+#define WTCON_PRESCALER(x) ((x) << WTCON_PRE_OFFSET)
+#define WTCON_EN (0x1 << WTCON_EN_OFFSET)
+#define WTCON_RESET (0x1 << WTCON_RESET_OFFSET)
+#define WTCON_INT (0x1 << WTCON_INTEN_OFFSET)
+
+#ifndef __ASSEMBLY__
+struct s5p_watchdog {
+ unsigned int wtcon;
+ unsigned int wtdat;
+ unsigned int wtcnt;
+ unsigned int wtclrint;
+};
+
+/* functions */
+void wdt_stop(void);
+void wdt_start(unsigned int timeout);
+#endif /* __ASSEMBLY__ */
+
+#endif