| /* | |
| * This file is subject to the terms and conditions of the GNU General Public | |
| * License. See the file "COPYING" in the main directory of this archive | |
| * for more details. | |
| * | |
| * Machine specific IO port address definition for generic. | |
| * Written by Osamu Tomita <tomita@cinet.co.jp> | |
| */ | |
| #ifndef __LINUX_I8253_H | |
| #define __LINUX_I8253_H | |
| #include <linux/param.h> | |
| #include <linux/spinlock.h> | |
| #include <linux/timex.h> | |
| /* i8253A PIT registers */ | |
| #define PIT_MODE 0x43 | |
| #define PIT_CH0 0x40 | |
| #define PIT_CH2 0x42 | |
| #define PIT_LATCH ((PIT_TICK_RATE + HZ/2) / HZ) | |
| extern raw_spinlock_t i8253_lock; | |
| extern struct clock_event_device i8253_clockevent; | |
| extern void clockevent_i8253_init(bool oneshot); | |
| extern void setup_pit_timer(void); | |
| #endif /* __LINUX_I8253_H */ |