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Diffstat (limited to '')
| -rw-r--r-- | arch/mips/include/asm/mach-dec/mc146818rtc.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-dec/mc146818rtc.h b/arch/mips/include/asm/mach-dec/mc146818rtc.h new file mode 100644 index 000000000..d4614e2a8 --- /dev/null +++ b/arch/mips/include/asm/mach-dec/mc146818rtc.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * RTC definitions for DECstation style attached Dallas DS1287 chip. + * + * Copyright (C) 1998, 2001 by Ralf Baechle + * Copyright (C) 1998 by Harald Koerfgen + * Copyright (C) 2002, 2005 Maciej W. Rozycki + */ +#ifndef __ASM_MIPS_DEC_RTC_DEC_H +#define __ASM_MIPS_DEC_RTC_DEC_H + +#include <linux/types.h> +#include <asm/addrspace.h> +#include <asm/dec/system.h> + +extern volatile u8 *dec_rtc_base; + +#define ARCH_RTC_LOCATION + +#define RTC_PORT(x) CPHYSADDR((long)dec_rtc_base) +#define RTC_IO_EXTENT dec_kn_slot_size +#define RTC_IOMAPPED 0 +#undef RTC_IRQ + +#define RTC_DEC_YEAR 0x3f /* Where we store the real year on DECs. */ + +static inline unsigned char CMOS_READ(unsigned long addr) +{ + return dec_rtc_base[addr * 4]; +} + +static inline void CMOS_WRITE(unsigned char data, unsigned long addr) +{ + dec_rtc_base[addr * 4] = data; +} + +#define RTC_ALWAYS_BCD 0 + +#endif /* __ASM_MIPS_DEC_RTC_DEC_H */ |