| jdl@freescale.com | a37c887 | 2005-09-07 15:27:09 -0500 | [diff] [blame] | 1 | #ifndef _ASM_POWERPC_MC146818RTC_H |
| 2 | #define _ASM_POWERPC_MC146818RTC_H |
| Jon Loeliger | 6b9269a | 2005-09-01 15:51:52 -0500 | [diff] [blame] | 3 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
| Jon Loeliger | 6b9269a | 2005-09-01 15:51:52 -0500 | [diff] [blame] | 12 | |
| 13 | #ifdef __KERNEL__ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) ({ \ |
| 27 | outb_p((addr),RTC_PORT(0)); \ |
| 28 | inb_p(RTC_PORT(1)); \ |
| 29 | }) |
| 30 | #define CMOS_WRITE(val, addr) ({ \ |
| 31 | outb_p((addr),RTC_PORT(0)); \ |
| 32 | outb_p((val),RTC_PORT(1)); \ |
| 33 | }) |
| 34 | |
| Jon Loeliger | 6b9269a | 2005-09-01 15:51:52 -0500 | [diff] [blame] | 35 | #endif /* __KERNEL__ */ |
| jdl@freescale.com | a37c887 | 2005-09-07 15:27:09 -0500 | [diff] [blame] | 36 | #endif /* _ASM_POWERPC_MC146818RTC_H */ |