patch-2.4.2 linux/include/asm-cris/rtc.h

• Lines: 60
• Date: Thu Feb 8 16:32:44 2001
• Orig file: v2.4.1/linux/include/asm-cris/rtc.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/include/asm-cris/rtc.h linux/include/asm-cris/rtc.h
@@ -0,0 +1,59 @@
+/* $Id: rtc.h,v 1.1 2000/07/10 16:32:31 bjornw Exp $ */
+
+#ifndef RTC_H
+#define RTC_H
+
+#include <linux/config.h>
+
+/* Dallas DS1302 clock/calendar register numbers */
+
+#define RTC_SECONDS 0
+#define RTC_MINUTES 1
+#define RTC_HOURS 2
+#define RTC_DAY_OF_MONTH 3
+#define RTC_MONTH 4
+#define RTC_WEEKDAY 5
+#define RTC_YEAR 6
+
+#ifdef CONFIG_DS1302
+#define CMOS_READ(x) ds1302_readreg(x)
+#define CMOS_WRITE(val,reg) ds1302_writereg(reg,val)
+#define RTC_INIT() ds1302_init()
+#else
+/* no RTC configured so we shouldn't try to access any */
+#define CMOS_READ(x) 42
+#define CMOS_WRITE(x,y)
+#define RTC_INIT() (-1)
+#endif
+
+/* conversions to and from the stupid RTC internal format */
+
+#define BCD_TO_BIN(x) x = (((x & 0xf0) >> 3) * 5 + (x & 0xf))
+#define BIN_TO_BCD(x) x = (x % 10) | ((x / 10) << 4) 
+
+/*
+ * The struct used to pass data via the following ioctl. Similar to the
+ * struct tm in <time.h>, but it needs to be here so that the kernel 
+ * source is self contained, allowing cross-compiles, etc. etc.
+ */
+
+struct rtc_time {
+	int tm_sec;
+	int tm_min;
+	int tm_hour;
+	int tm_mday;
+	int tm_mon;
+	int tm_year;
+	int tm_wday;
+	int tm_yday;
+	int tm_isdst;
+};
+
+/*
+ * ioctl calls that are permitted to the /dev/rtc interface
+ */
+
+#define RTC_RD_TIME	_IOR('p', 0x09, struct rtc_time) /* Read RTC time   */
+#define RTC_SET_TIME	_IOW('p', 0x0a, struct rtc_time) /* Set RTC time    */
+
+#endif