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/arch/powerpc/include/asm/mc146818rtc.h

https://github.com/aicjofs/android_kernel_lge_v500_20d_f2fs
C Header | 36 lines | 18 code | 6 blank | 12 comment | 0 complexity | 69bf4bcfecc13947cced2774f22c3649 MD5 | raw file
 1#ifndef _ASM_POWERPC_MC146818RTC_H
 2#define _ASM_POWERPC_MC146818RTC_H
 3
 4/*
 5 * Machine dependent access functions for RTC registers.
 6 *
 7 * This program is free software; you can redistribute it and/or
 8 * modify it under the terms of the GNU General Public License
 9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13#ifdef __KERNEL__
14
15#include <asm/io.h>
16
17#ifndef RTC_PORT
18#define RTC_PORT(x)	(0x70 + (x))
19#define RTC_ALWAYS_BCD	1	/* RTC operates in binary mode */
20#endif
21
22/*
23 * The yet supported machines all access the RTC index register via
24 * an ISA port access but the way to access the date register differs ...
25 */
26#define CMOS_READ(addr) ({ \
27outb_p((addr),RTC_PORT(0)); \
28inb_p(RTC_PORT(1)); \
29})
30#define CMOS_WRITE(val, addr) ({ \
31outb_p((addr),RTC_PORT(0)); \
32outb_p((val),RTC_PORT(1)); \
33})
34
35#endif	/* __KERNEL__ */
36#endif	/* _ASM_POWERPC_MC146818RTC_H */