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36 lines
970 B
36 lines
970 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Carsten Langgaard, [email protected] |
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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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