blob: 8336b2f6f834627c462a0add39f4502aecfb5ed6 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
/*
* 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 bool i8253_clear_counter_on_shutdown;
extern struct clock_event_device i8253_clockevent;
extern void clockevent_i8253_init(bool oneshot);
extern void setup_pit_timer(void);
#endif /* __LINUX_I8253_H */
|
