linux/include/asm-mips/mach-dec/mc146818rtc.h
Maciej W. Rozycki 38e0e8c055 [PATCH] char/rtc: Handle memory-mapped chips properly
Handle memory-mapped chips properly, needed for example on DECstations.
This support was in Linux 2.4 but for some reason got lost in 2.6.  This
patch is taken directly from the linux-mips repository.

[akpm@osdl.org: cleanup]
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Cc: Paul Gortmaker <penguin@muskoka.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-10 13:24:25 -07:00

44 lines
1.1 KiB
C

/*
* 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
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#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 */