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Diffstat (limited to 'arch/arm/include/asm/mach/time.h')
-rw-r--r--arch/arm/include/asm/mach/time.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
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+++ b/arch/arm/include/asm/mach/time.h
@@ -0,0 +1,57 @@
+/*
+ * arch/arm/include/asm/mach/time.h
+ *
+ * Copyright (C) 2004 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARM_MACH_TIME_H
+#define __ASM_ARM_MACH_TIME_H
+
+#include <linux/sysdev.h>
+
+/*
+ * 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);
+#ifndef CONFIG_GENERIC_TIME
+ unsigned long (*offset)(void);
+#endif
+};
+
+extern struct sys_timer *system_timer;
+extern void timer_tick(void);
+
+/*
+ * Kernel time keeping support.
+ */
+struct timespec;
+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