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mc146818rtc_64.h
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1 /*
2  * Machine dependent access functions for RTC registers.
3  */
4 #ifndef __ASM_SPARC64_MC146818RTC_H
5 #define __ASM_SPARC64_MC146818RTC_H
6 
7 #include <asm/io.h>
8 
9 #ifndef RTC_PORT
10 extern unsigned long cmos_regs;
11 #define RTC_PORT(x) (cmos_regs + (x))
12 #define RTC_ALWAYS_BCD 0
13 #endif
14 
15 /*
16  * The yet supported machines all access the RTC index register via
17  * an ISA port access but the way to access the date register differs ...
18  */
19 #define CMOS_READ(addr) ({ \
20 outb_p((addr),RTC_PORT(0)); \
21 inb_p(RTC_PORT(1)); \
22 })
23 #define CMOS_WRITE(val, addr) ({ \
24 outb_p((addr),RTC_PORT(0)); \
25 outb_p((val),RTC_PORT(1)); \
26 })
27 
28 #endif /* __ASM_SPARC64_MC146818RTC_H */