patch-2.4.6 linux/include/asm-m68k/mc146818rtc.h

• Lines: 49
• Date: Mon Jun 11 19:15:27 2001
• Orig file: v2.4.5/linux/include/asm-m68k/mc146818rtc.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/include/asm-m68k/mc146818rtc.h linux/include/asm-m68k/mc146818rtc.h
@@ -0,0 +1,48 @@
+/*
+ * Machine dependent access functions for RTC registers.
+ */
+#ifndef _ASM_MC146818RTC_H
+#define _ASM_MC146818RTC_H
+
+#include <linux/config.h>
+
+#ifdef CONFIG_ATARI
+/* RTC in Atari machines */
+
+#include <asm/atarihw.h>
+#include <asm/atariints.h>
+#include <asm/io.h>
+#define RTC_HAS_IRQ	(ATARIHW_PRESENT(TT_MFP))
+#define RTC_IRQ 	IRQ_TT_MFP_RTC
+#define RTC_IRQ_FLAGS	IRQ_TYPE_FAST
+#define RTC_PORT(x)	(TT_RTC_BAS + 2*(x))
+#define RTC_ALWAYS_BCD	0	/* TOS uses binary mode, Linux should be able
+				 * to deal with both modes */
+
+#define RTC_CHECK_DRIVER_INIT() (MACH_IS_ATARI && ATARIHW_PRESENT(TT_CLK))
+#define RTC_MACH_INIT()							\
+    do {								\
+	epoch = atari_rtc_year_offset + 1900;				\
+	if (RTC_HAS_IRQ)						\
+	    /* select RTC int on H->L edge */				\
+	    tt_mfp.active_edge &= ~0x40;				\
+    } while(0)
+#define RTC_MACH_EXIT()
+
+/* On Atari, the year was stored with base 1970 in old TOS versions (before
+ * 3.06). Later, Atari recognized that this broke leap year recognition, and
+ * changed the base to 1968. Medusa and Hades always use the new version. */
+#define RTC_CENTURY_SWITCH	-1	/* no century switch */
+#define RTC_MINYEAR		epoch
+
+#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 /* CONFIG_ATARI */
+
+#endif /* _ASM_MC146818RTC_H */