1 /* 1 /*
2 * This file is subject to the terms and condi 2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the mai 3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details. 4 * for more details.
5 * 5 *
6 * Machine specific IO port address definitio 6 * Machine specific IO port address definition for generic.
7 * Written by Osamu Tomita <tomita@cinet.co.j 7 * Written by Osamu Tomita <tomita@cinet.co.jp>
8 */ 8 */
9 #ifndef __LINUX_I8253_H 9 #ifndef __LINUX_I8253_H
10 #define __LINUX_I8253_H 10 #define __LINUX_I8253_H
11 11
12 #include <linux/param.h> 12 #include <linux/param.h>
13 #include <linux/spinlock.h> 13 #include <linux/spinlock.h>
14 #include <linux/timex.h> 14 #include <linux/timex.h>
15 15
16 /* i8253A PIT registers */ 16 /* i8253A PIT registers */
17 #define PIT_MODE 0x43 17 #define PIT_MODE 0x43
18 #define PIT_CH0 0x40 18 #define PIT_CH0 0x40
19 #define PIT_CH2 0x42 19 #define PIT_CH2 0x42
20 20
21 #define PIT_LATCH ((PIT_TICK_RATE + HZ/2 21 #define PIT_LATCH ((PIT_TICK_RATE + HZ/2) / HZ)
22 22
23 extern raw_spinlock_t i8253_lock; 23 extern raw_spinlock_t i8253_lock;
>> 24 extern bool i8253_clear_counter_on_shutdown;
24 extern struct clock_event_device i8253_clockev 25 extern struct clock_event_device i8253_clockevent;
25 extern void clockevent_i8253_init(bool oneshot 26 extern void clockevent_i8253_init(bool oneshot);
26 extern void clockevent_i8253_disable(void); <<
27 27
28 extern void setup_pit_timer(void); 28 extern void setup_pit_timer(void);
29 29
30 #endif /* __LINUX_I8253_H */ 30 #endif /* __LINUX_I8253_H */
31 31
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