| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Machine dependent access functions for RTC registers. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | #ifndef __ASM_PPC64_MC146818RTC_H |
| 10 | #define __ASM_PPC64_MC146818RTC_H |
| 11 | |
| 12 | #include <asm/io.h> |
| 13 | |
| 14 | #ifndef RTC_PORT |
| 15 | #define RTC_PORT(x) (0x70 + (x)) |
| 16 | #define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ |
| 17 | #endif |
| 18 | |
| 19 | /* |
| 20 | * The yet supported machines all access the RTC index register via |
| 21 | * an ISA port access but the way to access the date register differs ... |
| 22 | */ |
| 23 | #define CMOS_READ(addr) ({ \ |
| 24 | outb_p((addr),RTC_PORT(0)); \ |
| 25 | inb_p(RTC_PORT(1)); \ |
| 26 | }) |
| 27 | #define CMOS_WRITE(val, addr) ({ \ |
| 28 | outb_p((addr),RTC_PORT(0)); \ |
| 29 | outb_p((val),RTC_PORT(1)); \ |
| 30 | }) |
| 31 | |
| 32 | #endif /* __ASM_PPC64_MC146818RTC_H */ |