37 lines
943 B
C
37 lines
943 B
C
|
#ifndef _ASM_POWERPC_MC146818RTC_H
|
||
|
|
#define _ASM_POWERPC_MC146818RTC_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Machine dependent access functions for RTC registers.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
#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)); \
|
||
|
|
})
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
#endif /* _ASM_POWERPC_MC146818RTC_H */
|