Subversion Repositories or1k

/*

 * Machine dependent access functions for RTC registers.

 */

#ifndef _ASM_MC146818RTC_H

#define _ASM_MC146818RTC_H

#include <asm/arch/irqs.h>

#include <asm/io.h>

#ifndef RTC_PORT

#define RTC_PORT(x)     (0x70 + (x))

#define RTC_ALWAYS_BCD  1       /* RTC operates in binary mode */

#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)); \

})

#ifdef CONFIG_ARCH_RISCSTATION

/* RiscStation hardware has a lock to ensure random read/writes can't

 * do anything nasty to it

*/

#undef CMOS_READ

#undef CMOS_WRITE

#define CMOS_READ(addr) ({ \

outb_p((addr),RTC_PORT(0)); \

outb_p((addr),RTC_PORT(3)); \

inb_p(RTC_PORT(1)); \

})

#define CMOS_WRITE(val, addr) ({ \

outb_p((addr),RTC_PORT(0)); \

outb_p((addr),RTC_PORT(3)); \

outb_p((val),RTC_PORT(1)); \

})

#endif /* CONFIG_ARCH_RISCSTATION */

#endif /* _ASM_MC146818RTC_H */