linux/arch/sparc/include/asm/mc146818rtc_64.h
David S. Miller da86783dda sparc64: Use generic CMOS driver.
Based largely upon a patch by Krzysztof Helt <krzysztof.h1@poczta.fm>

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 14:16:48 -07:00

29 lines
650 B
C

/*
* Machine dependent access functions for RTC registers.
*/
#ifndef __ASM_SPARC64_MC146818RTC_H
#define __ASM_SPARC64_MC146818RTC_H
#include <asm/io.h>
#ifndef RTC_PORT
extern unsigned long cmos_regs;
#define RTC_PORT(x) (cmos_regs + (x))
#define RTC_ALWAYS_BCD 0
#endif
/*
* The yet supported machines all access the RTC index register via
* an ISA port access but the way to access the date register differs ...
*/
#define CMOS_READ(addr) ({ \
outb_p((addr),RTC_PORT(0)); \
inb_p(RTC_PORT(1)); \
})
#define CMOS_WRITE(val, addr) ({ \
outb_p((addr),RTC_PORT(0)); \
outb_p((val),RTC_PORT(1)); \
})
#endif /* __ASM_SPARC64_MC146818RTC_H */