global: Migrate CONFIG_STACKBASE to CFG

[platform/kernel/u-boot.git] / include / time.h

diff --git a/include/time.h b/include/time.h
index 9fd0d73..3b2ba09 100644 (file)
--- a/include/time.h
+++ b/include/time.h
@@ -4,6 +4,9 @@
 #define _TIME_H
 
 #include <linux/typecheck.h>
+#include <linux/types.h>
+
+ulong get_tbclk(void);
 
 unsigned long get_timer(unsigned long base);
 
@@ -12,6 +15,18 @@ unsigned long get_timer(unsigned long base);
  * Granularity may be larger than 1us if hardware does not support this.
  */
 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()
@@ -21,6 +36,14 @@ unsigned long timer_get_us(void);
  */
 void timer_test_add_offset(unsigned long offset);
 
+/**
+ * usec_to_tick() - convert microseconds to clock ticks
+ *
+ * @usec:      duration in microseconds
+ * Return:     duration in clock ticks
+ */
+uint64_t usec_to_tick(unsigned long usec);
+
 /*
  *     These inlines deal with timer wrapping correctly. You are
  *     strongly encouraged to use them
@@ -60,4 +83,66 @@ void timer_test_add_offset(unsigned long offset);
        (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()
+ */
+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()
+ */
+ulong ticks2usec(unsigned long ticks);
+
+/**
+ * wait_ticks() - waits a given number of ticks
+ *
+ * This is an internal function typically used to implement udelay() and
+ * similar. Normally you should use udelay() or mdelay() instead.
+ *
+ * @ticks: Number of ticks to wait
+ */
+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 */