mc146818rtc.h

来自「嵌入式系统设计与实例开发源码」· C头文件 代码 · 共 36 行

/*
 * Machine dependent access functions for RTC registers.
 */
#ifndef __ASM_SPARC64_MC146818RTC_H
#define __ASM_SPARC64_MC146818RTC_H

#include <linux/config.h>
#include <asm/io.h>

#ifndef RTC_PORT
#ifdef CONFIG_PCI
extern unsigned long ds1287_regs;
#else
#define ds1287_regs (0UL)
#endif
#define RTC_PORT(x)	(ds1287_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)); \
})

#define RTC_IRQ 8

#endif /* __ASM_SPARC64_MC146818RTC_H */