1/* 2 * Machine specific IO port address definition for generic. 3 * Written by Osamu Tomita <tomita@cinet.co.jp> 4 */ 5#ifndef __ASM_I8253_H 6#define __ASM_I8253_H 7 8#include <linux/spinlock.h> 9 10/* i8253A PIT registers */ 11#define PIT_MODE 0x43 12#define PIT_CH0 0x40 13#define PIT_CH2 0x42 14 15extern raw_spinlock_t i8253_lock; 16 17extern void setup_pit_timer(void); 18 19#endif /* __ASM_I8253_H */ 20