#ifndef __ASM_ARM_MACH_TIME_H
#define __ASM_ARM_MACH_TIME_H
-extern void (*init_arch_time)(void);
+#include <linux/sysdev.h>
-extern int (*set_rtc)(void);
-extern unsigned long(*gettimeoffset)(void);
+/*
+ * This is our kernel timer structure.
+ *
+ * - init
+ * Initialise the kernels jiffy timer source, claim interrupt
+ * using setup_irq. This is called early on during initialisation
+ * while interrupts are still disabled on the local CPU.
+ * - suspend
+ * Suspend the kernel jiffy timer source, if necessary. This
+ * is called with interrupts disabled, after all normal devices
+ * have been suspended. If no action is required, set this to
+ * NULL.
+ * - resume
+ * Resume the kernel jiffy timer source, if necessary. This
+ * is called with interrupts disabled before any normal devices
+ * are resumed. If no action is required, set this to NULL.
+ * - offset
+ * Return the timer offset in microseconds since the last timer
+ * interrupt. Note: this must take account of any unprocessed
+ * timer interrupt which may be pending.
+ */
+struct sys_timer {
+ struct sys_device dev;
+ void (*init)(void);
+ void (*suspend)(void);
+ void (*resume)(void);
+ unsigned long (*offset)(void);
+
+#ifdef CONFIG_NO_IDLE_HZ
+ struct dyn_tick_timer *dyn_tick;
+#endif
+};
+
+#ifdef CONFIG_NO_IDLE_HZ
+
+#define DYN_TICK_ENABLED (1 << 1)
-void timer_tick(struct pt_regs *);
+struct dyn_tick_timer {
+ 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 *, struct pt_regs *);
+};
+
+void timer_dyn_reprogram(void);
+#else
+#define timer_dyn_reprogram() do { } while (0)
+#endif
+
+extern struct sys_timer *system_timer;
+extern void timer_tick(struct pt_regs *);
+
+/*
+ * Kernel time keeping support.
+ */
+extern int (*set_rtc)(void);
+extern void save_time_delta(struct timespec *delta, struct timespec *rtc);
+extern void restore_time_delta(struct timespec *delta, struct timespec *rtc);
#endif