ARMV7: Exynos4: Add watchdog.h for Exynos4

This patch add watchdog.h for Exynos4

Signed-off-by: HeungJun, Kim <riverful.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/include/asm/arch-exynos/watchdog.h

+/*
+ * Copyright (C) 2011 Samsung Electronics
+ * Heungjun Kim <riverful.kim@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 exynos4_watchdog {
+	unsigned int wtcon;
+	unsigned int wtdat;
+	unsigned int wtcnt;
+	unsigned int wtclrint;
+};
+#endif	/* __ASSEMBLY__ */
+
+#endif