arch/arm/mach-s5pc1xx/include/mach/watchdog.h

   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