1 /* 2 * Machine specific IO port address definition for generic. 3 * Written by Osamu Tomita <tomita (at) 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 15 #define PIT_TICK_RATE 1193182UL 16 17 extern spinlock_t i8253_lock; 18 19 extern void setup_pit_timer(void); 20 21 #endif /* __ASM_I8253_H */ 22
