LXR linux/arch/sparc/include/asm/mc146818rtc

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Machine dependent access functions for RTC registers.
   4 */
   5#ifndef __ASM_SPARC64_MC146818RTC_H
   6#define __ASM_SPARC64_MC146818RTC_H
   7
   8#include <asm/io.h>
   9
  10#ifndef RTC_PORT
  11extern unsigned long cmos_regs;
  12#define RTC_PORT(x)     (cmos_regs + (x))
  13#define RTC_ALWAYS_BCD  0
  14#endif
  15
  16/*
  17 * The yet supported machines all access the RTC index register via
  18 * an ISA port access but the way to access the date register differs ...
  19 */
  20#define CMOS_READ(addr) ({ \
  21outb_p((addr),RTC_PORT(0)); \
  22inb_p(RTC_PORT(1)); \
  23})
  24#define CMOS_WRITE(val, addr) ({ \
  25outb_p((addr),RTC_PORT(0)); \
  26outb_p((val),RTC_PORT(1)); \
  27})
  28
  29#endif /* __ASM_SPARC64_MC146818RTC_H */
  30