linux/arch/x86/include/asm/i8253.h
Russell King 82491451dd clocksource: convert x86 to generic i8253 clocksource
Convert x86 i8253 clocksource code to use generic i8253 clocksource.

Acked-by: John Stultz <john.stultz@linaro.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-14 10:29:48 +01:00

21 lines
377 B
C

#ifndef _ASM_X86_I8253_H
#define _ASM_X86_I8253_H
/* i8253A PIT registers */
#define PIT_MODE 0x43
#define PIT_CH0 0x40
#define PIT_CH2 0x42
#define PIT_LATCH LATCH
extern raw_spinlock_t i8253_lock;
extern struct clock_event_device *global_clock_event;
extern void setup_pit_timer(void);
#define inb_pit inb_p
#define outb_pit outb_p
#endif /* _ASM_X86_I8253_H */