blob: 227018b2fef8a19a012fac4659317b6c286813ad [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Machine dependent access functions for RTC registers.
3 */
4#ifdef __KERNEL__
5#ifndef __ASM_PPC_MC146818RTC_H
6#define __ASM_PPC_MC146818RTC_H
7
8#include <asm/io.h>
9
10#ifndef RTC_PORT
11#define RTC_PORT(x) (0x70 + (x))
12#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
13#endif
14
15/*
16 * The yet supported machines all access the RTC index register via
17 * an ISA port access but the way to access the date register differs ...
18 */
19#define CMOS_READ(addr) ({ \
20outb_p((addr),RTC_PORT(0)); \
21inb_p(RTC_PORT(1)); \
22})
23#define CMOS_WRITE(val, addr) ({ \
24outb_p((addr),RTC_PORT(0)); \
25outb_p((val),RTC_PORT(1)); \
26})
27
28#define RTC_IRQ 8
29
30#endif /* __ASM_PPC_MC146818RTC_H */
31#endif /* __KERNEL__ */