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38 lines
925 B
38 lines
925 B
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 1998, 2001, 03 by Ralf Baechle |
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* Copyright (C) 2007 Thomas Bogendoerfer |
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* |
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* RTC routines for Jazz style attached Dallas chip. |
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*/ |
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#ifndef __ASM_MACH_JAZZ_MC146818RTC_H |
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#define __ASM_MACH_JAZZ_MC146818RTC_H |
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#include <linux/delay.h> |
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#include <asm/io.h> |
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#include <asm/jazz.h> |
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#define RTC_PORT(x) (0x70 + (x)) |
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#define RTC_IRQ 8 |
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static inline unsigned char CMOS_READ(unsigned long addr) |
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{ |
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outb_p(addr, RTC_PORT(0)); |
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return *(volatile char *)JAZZ_RTC_BASE; |
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} |
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static inline void CMOS_WRITE(unsigned char data, unsigned long addr) |
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{ |
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outb_p(addr, RTC_PORT(0)); |
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*(volatile char *)JAZZ_RTC_BASE = data; |
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} |
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#define RTC_ALWAYS_BCD 0 |
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#define mc146818_decode_year(year) ((year) + 1980) |
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#endif /* __ASM_MACH_JAZZ_MC146818RTC_H */
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