| #ifndef __ASM_I8253_H__ | |
| #define __ASM_I8253_H__ | |
| #include <linux/clockchips.h> | |
| /* i8253A PIT registers */ | |
| #define PIT_MODE 0x43 | |
| #define PIT_CH0 0x40 | |
| #define PIT_CH2 0x42 | |
| extern spinlock_t i8253_lock; | |
| extern struct clock_event_device *global_clock_event; | |
| extern void setup_pit_timer(void); | |
| #endif /* __ASM_I8253_H__ */ |