X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Ftime.h;h=3b2ba091247030d8a440c524441dfde060ad2580;hb=6786ce1ce14feb4d02854a0c04bc0cce505be46e;hp=31d386729ef5b1f7fa4bf7b2eb857c3237f5546f;hpb=036a017f79f6c485605c555b3a8733debb72d995;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/time.h b/include/time.h
index 31d3867..3b2ba09 100644
--- a/include/time.h
+++ b/include/time.h
@@ -6,6 +6,8 @@
 #include <linux/typecheck.h>
 #include <linux/types.h>
 
+ulong get_tbclk(void);
+
 unsigned long get_timer(unsigned long base);
 
 /*
@@ -15,6 +17,17 @@ unsigned long get_timer(unsigned long base);
 unsigned long timer_get_us(void);
 uint64_t get_timer_us(uint64_t base);
 
+/**
+ * get_timer_us_long() - Get the number of elapsed microseconds
+ *
+ * This uses 32-bit arithmetic on 32-bit machines, which is enough to handle
+ * delays of over an hour. For 64-bit machines it uses a 64-bit value.
+ *
+ *@base: Base time to consider
+ *Return: elapsed time since @base
+ */
+unsigned long get_timer_us_long(unsigned long base);
+
 /*
  * timer_test_add_offset()
  *
@@ -70,11 +83,30 @@ uint64_t usec_to_tick(unsigned long usec);
 	(time_after_eq(a,b) && \
 	 time_before(a,c))
 
+/* Same as above, but does so with platform independent 64bit types.
+ * These must be used when utilizing jiffies_64 (i.e. return value of
+ * get_jiffies_64() */
+#define time_after64(a,b)	\
+	(typecheck(__u64, a) &&	\
+	 typecheck(__u64, b) && \
+	 ((__s64)((b) - (a)) < 0))
+#define time_before64(a,b)	time_after64(b,a)
+
+#define time_after_eq64(a,b)	\
+	(typecheck(__u64, a) && \
+	 typecheck(__u64, b) && \
+	 ((__s64)((a) - (b)) >= 0))
+#define time_before_eq64(a,b)	time_after_eq64(b,a)
+
+#define time_in_range64(a, b, c) \
+	(time_after_eq64(a, b) && \
+	 time_before_eq64(a, c))
+
 /**
  * usec2ticks() - Convert microseconds to internal ticks
  *
  * @usec: Value of microseconds to convert
- * @return Corresponding internal ticks value, calculated using get_tbclk()
+ * Return: Corresponding internal ticks value, calculated using get_tbclk()
  */
 ulong usec2ticks(unsigned long usec);
 
@@ -82,7 +114,7 @@ ulong usec2ticks(unsigned long usec);
  * ticks2usec() - Convert internal ticks to microseconds
  *
  * @ticks: Value of ticks to convert
- * @return Corresponding microseconds value, calculated using get_tbclk()
+ * Return: Corresponding microseconds value, calculated using get_tbclk()
  */
 ulong ticks2usec(unsigned long ticks);
 
@@ -96,4 +128,21 @@ ulong ticks2usec(unsigned long ticks);
  */
 void wait_ticks(unsigned long ticks);
 
+/**
+ * timer_get_us() - Get monotonic microsecond timer
+ *
+ * Return: value of monotonic microsecond timer
+ */
+unsigned long timer_get_us(void);
+
+/**
+ * get_ticks() - Get the current tick value
+ *
+ * This is an internal value used by the timer on the system. Ticks increase
+ * monotonically at the rate given by get_tbclk().
+ *
+ * Return: current tick value
+ */
+uint64_t get_ticks(void);
+
 #endif /* _TIME_H */