mirror of https://gitee.com/openkylin/linux.git
22 lines
416 B
C
22 lines
416 B
C
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/*
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* Machine specific IO port address definition for generic.
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* Written by Osamu Tomita <tomita@cinet.co.jp>
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*/
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#ifndef __ASM_I8253_H
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#define __ASM_I8253_H
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#include <linux/spinlock.h>
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/* i8253A PIT registers */
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#define PIT_MODE 0x43
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#define PIT_CH0 0x40
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#define PIT_CH2 0x42
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#define PIT_TICK_RATE 1193182UL
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extern spinlock_t i8253_lock;
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extern void setup_pit_timer(void);
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#endif /* __ASM_I8253_H */
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