include/asm-sh/timer.h

   1 #ifndef __ASM_SH_TIMER_H
   2 #define __ASM_SH_TIMER_H
   3
   4 #include <linux/sysdev.h>
   5 #include <asm/cpu/timer.h>
   6
   7 struct sys_timer_ops {
   8         int (*init)(void);
   9         int (*start)(void);
  10         int (*stop)(void);
  11 #ifndef CONFIG_GENERIC_TIME
  12         unsigned long (*get_offset)(void);
  13 #endif
  14 };
  15
  16 struct sys_timer {
  17         const char              *name;
  18
  19         struct sys_device       dev;
  20         struct sys_timer_ops    *ops;
  21
  22 #ifdef CONFIG_NO_IDLE_HZ
  23         struct dyn_tick_timer   *dyn_tick;
  24 #endif
  25 };
  26
  27 #ifdef CONFIG_NO_IDLE_HZ
  28 #define DYN_TICK_ENABLED        (1 << 1)
  29
  30 struct dyn_tick_timer {
  31         spinlock_t      lock;
  32         unsigned int    state;                  /* Current state */
  33         int             (*enable)(void);        /* Enables dynamic tick */
  34         int             (*disable)(void);       /* Disables dynamic tick */
  35         void            (*reprogram)(unsigned long); /* Reprograms the timer */
  36         int             (*handler)(int, void *);
  37 };
  38
  39 void timer_dyn_reprogram(void);
  40 #else
  41 #define timer_dyn_reprogram()   do { } while (0)
  42 #endif
  43
  44 #define TICK_SIZE (tick_nsec / 1000)
  45
  46 extern struct sys_timer tmu_timer, cmt_timer, mtu2_timer;
  47 extern struct sys_timer *sys_timer;
  48
  49 #ifndef CONFIG_GENERIC_TIME
  50 static inline unsigned long get_timer_offset(void)
  51 {
  52         return sys_timer->ops->get_offset();
  53 }
  54 #endif
  55
  56 /* arch/sh/kernel/timers/timer.c */
  57 struct sys_timer *get_sys_timer(void);
  58
  59 /* arch/sh/kernel/time.c */
  60 void handle_timer_tick(void);
  61
  62 #endif /* __ASM_SH_TIMER_H */