patch-2.4.20 linux-2.4.20/include/asm-x86_64/mc146818rtc.h

• Lines: 35
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-x86_64/mc146818rtc.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/asm-x86_64/mc146818rtc.h linux-2.4.20/include/asm-x86_64/mc146818rtc.h
@@ -0,0 +1,34 @@
+/*
+ * Machine dependent access functions for RTC registers.
+ */
+#ifndef _ASM_MC146818RTC_H
+#define _ASM_MC146818RTC_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)); \
+})
+
+#ifndef CONFIG_HPET_TIMER
+#define RTC_IRQ 8
+#else
+/* Temporary workaround due to IRQ routing problem. */
+#define RTC_IRQ 0
+#endif
+
+#endif /* _ASM_MC146818RTC_H */