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Ralf Baechled865bea2007-10-11 23:46:10 +01001/*
2 * Machine specific IO port address definition for generic.
3 * Written by Osamu Tomita <tomita@cinet.co.jp>
4 */
Ralf Baechle94900942007-10-22 15:17:39 +01005#ifndef __ASM_I8253_H
6#define __ASM_I8253_H
Ralf Baechled865bea2007-10-11 23:46:10 +01007
Ralf Baechle74521c22007-11-02 17:26:06 +00008#include <linux/spinlock.h>
9
Ralf Baechled865bea2007-10-11 23:46:10 +010010/* i8253A PIT registers */
11#define PIT_MODE 0x43
12#define PIT_CH0 0x40
13#define PIT_CH2 0x42
14
Thomas Gleixnerced918e2010-02-17 16:47:10 +000015extern raw_spinlock_t i8253_lock;
Ralf Baechle74521c22007-11-02 17:26:06 +000016
Ralf Baechled865bea2007-10-11 23:46:10 +010017extern void setup_pit_timer(void);
18
Ralf Baechle94900942007-10-22 15:17:39 +010019#endif /* __ASM_I8253_H */