patch-2.1.53 linux/arch/ppc/kernel/time.h

• Lines: 77
• Date: Thu Sep 4 12:54:48 1997
• Orig file: v2.1.52/linux/arch/ppc/kernel/time.h
• Orig date: Mon Aug 18 18:19:44 1997

diff -u --recursive --new-file v2.1.52/linux/arch/ppc/kernel/time.h linux/arch/ppc/kernel/time.h
@@ -1,25 +1,74 @@
 /*
- * $Id: time.h,v 1.3 1997/08/12 08:22:14 cort Exp $
+ * $Id: time.h,v 1.5 1997/08/27 22:06:58 cort Exp $
  * Common time prototypes and such for all ppc machines.
  *
  * Written by Cort Dougan (cort@cs.nmt.edu) to merge
  * Paul Mackerras' version and mine for PReP and Pmac.
  */
 
+#include <linux/mc146818rtc.h>
+
 /* time.c */
 __inline__ unsigned long get_dec(void);
 __inline__ void set_dec(int val);
 void prep_calibrate_decr_handler(int, void *,struct pt_regs *);
 void prep_calibrate_decr(void);
 void pmac_calibrate_decr(void);
+void chrp_calibrate_decr(void);
 extern unsigned decrementer_count;
 extern unsigned count_period_num;
 extern unsigned count_period_den;
+extern unsigned long mktime(unsigned int, unsigned int,unsigned int,
+				   unsigned int, unsigned int, unsigned int);
 
-/* pmac/prep_time.c */
+/* pmac/prep/chrp_time.c */
 unsigned long prep_get_rtc_time(void);
 unsigned long pmac_get_rtc_time(void);
+unsigned long chrp_get_rtc_time(void);
 int prep_set_rtc_time(unsigned long nowtime);
 int pmac_set_rtc_time(unsigned long nowtime);
+int chrp_set_rtc_time(unsigned long nowtime);
 void pmac_read_rtc_time(void);
 
+#define TICK_SIZE tick
+#define FEBRUARY	2
+#define	STARTOFTIME	1970
+#define SECDAY		86400L
+#define SECYR		(SECDAY * 365)
+#define	leapyear(year)		((year) % 4 == 0)
+#define	days_in_year(a) 	(leapyear(a) ? 366 : 365)
+#define	days_in_month(a) 	(month_days[(a) - 1])
+
+static int      month_days[12] = {
+	31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+};
+
+extern void inline to_tm(int tim, struct rtc_time * tm)
+{
+	register int    i;
+	register long   hms, day;
+
+	day = tim / SECDAY;
+	hms = tim % SECDAY;
+
+	/* Hours, minutes, seconds are easy */
+	tm->tm_hour = hms / 3600;
+	tm->tm_min = (hms % 3600) / 60;
+	tm->tm_sec = (hms % 3600) % 60;
+
+	/* Number of years in days */
+	for (i = STARTOFTIME; day >= days_in_year(i); i++)
+		day -= days_in_year(i);
+	tm->tm_year = i;
+
+	/* Number of months in days left */
+	if (leapyear(tm->tm_year))
+		days_in_month(FEBRUARY) = 29;
+	for (i = 1; day >= days_in_month(i); i++)
+		day -= days_in_month(i);
+	days_in_month(FEBRUARY) = 28;
+	tm->tm_mon = i;
+
+	/* Days are what is left over (+1) from all that. */
+	tm->tm_mday = day + 1;
+}