| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Carsten Langgaard, carstenl@mips.com |
| * 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 */ |
