37 lines
970 B
C
37 lines
970 B
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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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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* 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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