12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2384740dcSRalf Baechle /* 3384740dcSRalf Baechle * RTC definitions for DECstation style attached Dallas DS1287 chip. 4384740dcSRalf Baechle * 5384740dcSRalf Baechle * Copyright (C) 1998, 2001 by Ralf Baechle 6384740dcSRalf Baechle * Copyright (C) 1998 by Harald Koerfgen 7384740dcSRalf Baechle * Copyright (C) 2002, 2005 Maciej W. Rozycki 8384740dcSRalf Baechle */ 9384740dcSRalf Baechle #ifndef __ASM_MIPS_DEC_RTC_DEC_H 10384740dcSRalf Baechle #define __ASM_MIPS_DEC_RTC_DEC_H 11384740dcSRalf Baechle 12384740dcSRalf Baechle #include <linux/types.h> 13384740dcSRalf Baechle #include <asm/addrspace.h> 14384740dcSRalf Baechle #include <asm/dec/system.h> 15384740dcSRalf Baechle 16384740dcSRalf Baechle extern volatile u8 *dec_rtc_base; 17384740dcSRalf Baechle 18384740dcSRalf Baechle #define ARCH_RTC_LOCATION 19384740dcSRalf Baechle 20384740dcSRalf Baechle #define RTC_PORT(x) CPHYSADDR((long)dec_rtc_base) 21384740dcSRalf Baechle #define RTC_IO_EXTENT dec_kn_slot_size 22384740dcSRalf Baechle #define RTC_IOMAPPED 0 23384740dcSRalf Baechle #undef RTC_IRQ 24384740dcSRalf Baechle 25384740dcSRalf Baechle #define RTC_DEC_YEAR 0x3f /* Where we store the real year on DECs. */ 26384740dcSRalf Baechle CMOS_READ(unsigned long addr)27384740dcSRalf Baechlestatic inline unsigned char CMOS_READ(unsigned long addr) 28384740dcSRalf Baechle { 29384740dcSRalf Baechle return dec_rtc_base[addr * 4]; 30384740dcSRalf Baechle } 31384740dcSRalf Baechle CMOS_WRITE(unsigned char data,unsigned long addr)32384740dcSRalf Baechlestatic inline void CMOS_WRITE(unsigned char data, unsigned long addr) 33384740dcSRalf Baechle { 34384740dcSRalf Baechle dec_rtc_base[addr * 4] = data; 35384740dcSRalf Baechle } 36384740dcSRalf Baechle 37384740dcSRalf Baechle #define RTC_ALWAYS_BCD 0 38384740dcSRalf Baechle 39384740dcSRalf Baechle #endif /* __ASM_MIPS_DEC_RTC_DEC_H */ 40