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Minkyu Kang851db352012-01-18 15:55:05 +09001/*
2 * Copyright (C) 2011 Samsung Electronics
3 * Heungjun Kim <riverful.kim@samsung.com>
4 * Minkyu Kang <mk7.kang@samsung.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#ifndef __ASM_ARM_ARCH_WATCHDOG_H_
26#define __ASM_ARM_ARCH_WATCHDOG_H_
27
28#define WTCON_RESET_OFFSET 0
29#define WTCON_INTEN_OFFSET 2
30#define WTCON_CLKSEL_OFFSET 3
31#define WTCON_EN_OFFSET 5
32#define WTCON_PRE_OFFSET 8
33
34#define WTCON_CLK_16 0x0
35#define WTCON_CLK_32 0x1
36#define WTCON_CLK_64 0x2
37#define WTCON_CLK_128 0x3
38
39#define WTCON_CLK(x) ((x & 0x3) << WTCON_CLKSEL_OFFSET)
40#define WTCON_PRESCALER(x) ((x) << WTCON_PRE_OFFSET)
41#define WTCON_EN (0x1 << WTCON_EN_OFFSET)
42#define WTCON_RESET (0x1 << WTCON_RESET_OFFSET)
43#define WTCON_INT (0x1 << WTCON_INTEN_OFFSET)
44
45#ifndef __ASSEMBLY__
46struct s5p_watchdog {
47 unsigned int wtcon;
48 unsigned int wtdat;
49 unsigned int wtcnt;
50 unsigned int wtclrint;
51};
52
53/* functions */
54void wdt_stop(void);
55void wdt_start(unsigned int timeout);
56#endif /* __ASSEMBLY__ */
57
58#endif