| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* |
| 3 | * RTC definitions for DECstation style attached Dallas DS1287 chip. |
| 4 | * |
| 5 | * Copyright (C) 1998, 2001 by Ralf Baechle |
| 6 | * Copyright (C) 1998 by Harald Koerfgen |
| 7 | * Copyright (C) 2002, 2005 Maciej W. Rozycki |
| 8 | */ |
| 9 | #ifndef __ASM_MIPS_DEC_RTC_DEC_H |
| 10 | #define __ASM_MIPS_DEC_RTC_DEC_H |
| 11 | |
| 12 | #include <linux/types.h> |
| 13 | #include <asm/addrspace.h> |
| 14 | #include <asm/dec/system.h> |
| 15 | |
| 16 | extern volatile u8 *dec_rtc_base; |
| 17 | |
| 18 | #define ARCH_RTC_LOCATION |
| 19 | |
| 20 | #define RTC_PORT(x) CPHYSADDR((long)dec_rtc_base) |
| 21 | #define RTC_IO_EXTENT dec_kn_slot_size |
| 22 | #define RTC_IOMAPPED 0 |
| 23 | #undef RTC_IRQ |
| 24 | |
| 25 | #define RTC_DEC_YEAR 0x3f /* Where we store the real year on DECs. */ |
| 26 | |
| 27 | static inline unsigned char CMOS_READ(unsigned long addr) |
| 28 | { |
| 29 | return dec_rtc_base[addr * 4]; |
| 30 | } |
| 31 | |
| 32 | static inline void CMOS_WRITE(unsigned char data, unsigned long addr) |
| 33 | { |
| 34 | dec_rtc_base[addr * 4] = data; |
| 35 | } |
| 36 | |
| 37 | #define RTC_ALWAYS_BCD 0 |
| 38 | |
| 39 | #endif /* __ASM_MIPS_DEC_RTC_DEC_H */ |