1 files changed, 21 insertions, 0 deletions

diff --git a/include/asm-sh/timer.h b/include/asm-sh/timer.h
index 5a014bca9d58..17b5e76a4c31 100644
--- a/include/asm-sh/timer.h
+++ b/include/asm-sh/timer.h
@@ -18,8 +18,29 @@ struct sys_timer {
 
         struct sys_device       dev;
         struct sys_timer_ops    *ops;
+
+#ifdef CONFIG_NO_IDLE_HZ
+        struct dyn_tick_timer   *dyn_tick;
+#endif
 };
 
+#ifdef CONFIG_NO_IDLE_HZ
+#define DYN_TICK_ENABLED        (1 << 1)
+
+struct dyn_tick_timer {
+        spinlock_t      lock;
+        unsigned int    state;                  /* Current state */
+        int             (*enable)(void);        /* Enables dynamic tick */
+        int             (*disable)(void);       /* Disables dynamic tick */
+        void            (*reprogram)(unsigned long); /* Reprograms the timer */
+        int             (*handler)(int, void *);
+};
+
+void timer_dyn_reprogram(void);
+#else
+#define timer_dyn_reprogram()   do { } while (0)
+#endif
+
 #define TICK_SIZE (tick_nsec / 1000)
 
 extern struct sys_timer tmu_timer, cmt_timer, mtu2_timer;