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