1 /* 2 * Carsten Langgaard, carstenl@mips.com 3 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. 4 * Copyright (C) 2003 by Ralf Baechle 5 * 6 * This program is free software; you can distribute it and/or modify it 7 * under the terms of the GNU General Public License (Version 2) as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, write to the Free Software Foundation, Inc., 17 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 18 * 19 * RTC routines for Malta style attached PIIX4 device, which contains a 20 * Motorola MC146818A-compatible Real Time Clock. 21 */ 22 #ifndef __ASM_MACH_MALTA_MC146818RTC_H 23 #define __ASM_MACH_MALTA_MC146818RTC_H 24 25 #include <asm/io.h> 26 #include <asm/mips-boards/generic.h> 27 #include <asm/mips-boards/malta.h> 28 29 #define RTC_PORT(x) (0x70 + (x)) 30 #define RTC_IRQ 8 31 32 static inline unsigned char CMOS_READ(unsigned long addr) 33 { 34 outb(addr, MALTA_RTC_ADR_REG); 35 return inb(MALTA_RTC_DAT_REG); 36 } 37 38 static inline void CMOS_WRITE(unsigned char data, unsigned long addr) 39 { 40 outb(addr, MALTA_RTC_ADR_REG); 41 outb(data, MALTA_RTC_DAT_REG); 42 } 43 44 #define RTC_ALWAYS_BCD 0 45 46 #define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900) 47 48 #endif /* __ASM_MACH_MALTA_MC146818RTC_H */ 49