49fa3c0869
Big endian RMs uses a different mc146818_decode_year than little endian RMs Correct mc146818_decode_year for years before 2000 Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
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* Copyright (C) 2003 by Ralf Baechle
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* RTC routines for Malta style attached PIIX4 device, which contains a
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* Motorola MC146818A-compatible Real Time Clock.
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*/
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#ifndef __ASM_MACH_MALTA_MC146818RTC_H
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#define __ASM_MACH_MALTA_MC146818RTC_H
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#include <asm/io.h>
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#include <asm/mips-boards/generic.h>
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#include <asm/mips-boards/malta.h>
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#define RTC_PORT(x) (0x70 + (x))
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#define RTC_IRQ 8
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static inline unsigned char CMOS_READ(unsigned long addr)
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{
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outb(addr, MALTA_RTC_ADR_REG);
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return inb(MALTA_RTC_DAT_REG);
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}
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static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
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{
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outb(addr, MALTA_RTC_ADR_REG);
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outb(data, MALTA_RTC_DAT_REG);
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}
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#define RTC_ALWAYS_BCD 0
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#define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900)
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#endif /* __ASM_MACH_MALTA_MC146818RTC_H */
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