1 /* 2 * RTC definitions for DECstation style attached Dallas DS1287 chip. 3 * 4 * Copyright (C) 1998, 2001 by Ralf Baechle 5 * Copyright (C) 1998 by Harald Koerfgen 6 * Copyright (C) 2002, 2005 Maciej W. Rozycki 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 11 * 2 of the License, or (at your option) any later version. 12 */ 13 #ifndef __ASM_MIPS_DEC_RTC_DEC_H 14 #define __ASM_MIPS_DEC_RTC_DEC_H 15 16 #include <linux/types.h> 17 #include <asm/addrspace.h> 18 #include <asm/dec/system.h> 19 20 extern volatile u8 *dec_rtc_base; 21 22 #define ARCH_RTC_LOCATION 23 24 #define RTC_PORT(x) CPHYSADDR((long)dec_rtc_base) 25 #define RTC_IO_EXTENT dec_kn_slot_size 26 #define RTC_IOMAPPED 0 27 #undef RTC_IRQ 28 29 #define RTC_DEC_YEAR 0x3f /* Where we store the real year on DECs. */ 30 31 static inline unsigned char CMOS_READ(unsigned long addr) 32 { 33 return dec_rtc_base[addr * 4]; 34 } 35 36 static inline void CMOS_WRITE(unsigned char data, unsigned long addr) 37 { 38 dec_rtc_base[addr * 4] = data; 39 } 40 41 #define RTC_ALWAYS_BCD 0 42 43 #endif /* __ASM_MIPS_DEC_RTC_DEC_H */ 44