1 /*
2  * Copyright (C) 2011 Samsung Electronics
3  * Heungjun Kim <riverful.kim@samsung.com>
4  * Minkyu Kang <mk7.kang@samsung.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #ifndef __ASM_ARM_ARCH_WATCHDOG_H_
10 #define __ASM_ARM_ARCH_WATCHDOG_H_
11 
12 #define WTCON_RESET_OFFSET	0
13 #define WTCON_INTEN_OFFSET	2
14 #define WTCON_CLKSEL_OFFSET	3
15 #define WTCON_EN_OFFSET		5
16 #define WTCON_PRE_OFFSET	8
17 
18 #define WTCON_CLK_16		0x0
19 #define WTCON_CLK_32		0x1
20 #define WTCON_CLK_64		0x2
21 #define WTCON_CLK_128		0x3
22 
23 #define WTCON_CLK(x)		((x & 0x3) << WTCON_CLKSEL_OFFSET)
24 #define WTCON_PRESCALER(x)	((x) << WTCON_PRE_OFFSET)
25 #define WTCON_EN		(0x1 << WTCON_EN_OFFSET)
26 #define WTCON_RESET		(0x1 << WTCON_RESET_OFFSET)
27 #define WTCON_INT		(0x1 << WTCON_INTEN_OFFSET)
28 
29 #ifndef __ASSEMBLY__
30 struct s5p_watchdog {
31 	unsigned int wtcon;
32 	unsigned int wtdat;
33 	unsigned int wtcnt;
34 	unsigned int wtclrint;
35 };
36 
37 /* functions */
38 void wdt_stop(void);
39 void wdt_start(unsigned int timeout);
40 #endif	/* __ASSEMBLY__ */
41 
42 #endif
43