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kernel/linux-rt-4.4.41/arch/mips/include/asm/mach-malta/mc146818rtc.h 1.54 KB
5113f6f70   김현기   kernel add
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  /*
   * Carsten Langgaard, carstenl@mips.com
   * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   * Copyright (C) 2003 by Ralf Baechle
   *
   * This program is free software; you can distribute it and/or modify it
   * under the terms of the GNU General Public License (Version 2) as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program; if not, write to the Free Software Foundation, Inc.,
   * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
   *
   * RTC routines for Malta style attached PIIX4 device, which contains a
   * Motorola MC146818A-compatible Real Time Clock.
   */
  #ifndef __ASM_MACH_MALTA_MC146818RTC_H
  #define __ASM_MACH_MALTA_MC146818RTC_H
  
  #include <asm/io.h>
  #include <asm/mips-boards/generic.h>
  #include <asm/mips-boards/malta.h>
  
  #define RTC_PORT(x)	(0x70 + (x))
  #define RTC_IRQ		8
  
  static inline unsigned char CMOS_READ(unsigned long addr)
  {
  	outb(addr, MALTA_RTC_ADR_REG);
  	return inb(MALTA_RTC_DAT_REG);
  }
  
  static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
  {
  	outb(addr, MALTA_RTC_ADR_REG);
  	outb(data, MALTA_RTC_DAT_REG);
  }
  
  #define RTC_ALWAYS_BCD	0
  
  #define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900)
  
  #endif /* __ASM_MACH_MALTA_MC146818RTC_H */