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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Carsten Langgaard, [email protected]
- * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
- * Copyright (C) 2003 by Ralf Baechle
- *
- * RTC routines for Malta style attached PIIX4 device, which contains a
- * Motorola MC146818A-compatible Real Time Clock.
- */
- #ifndef __ASM_MACH_MALTA_MC146818RTC_H
- #define __ASM_MACH_MALTA_MC146818RTC_H
- #include <asm/io.h>
- #include <asm/mips-boards/generic.h>
- #include <asm/mips-boards/malta.h>
- #define RTC_PORT(x) (0x70 + (x))
- #define RTC_IRQ 8
- static inline unsigned char CMOS_READ(unsigned long addr)
- {
- outb(addr, MALTA_RTC_ADR_REG);
- return inb(MALTA_RTC_DAT_REG);
- }
- static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
- {
- outb(addr, MALTA_RTC_ADR_REG);
- outb(data, MALTA_RTC_DAT_REG);
- }
- #define RTC_ALWAYS_BCD 0
- #define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900)
- #endif /* __ASM_MACH_MALTA_MC146818RTC_H */
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