From: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Date: Tue, 8 Oct 2013 10:50:03 +0000 (+0530)
Subject: exynos: Export timer_get_us() to get microsecond timer
X-Git-Tag: v2013.10~38^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fc9ae1bac45a40bdc9b8756757b645dc8d5b781c;p=kernel%2Fu-boot.git

exynos: Export timer_get_us() to get microsecond timer

This function, if implemented by the board, provides a microsecond
timer. The granularity may be larger than 1us if hardware does not
support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
---

diff --git a/include/common.h b/include/common.h
index f1a590a..bed4316 100644
--- a/include/common.h
+++ b/include/common.h
@@ -596,6 +596,12 @@ void ddr_enable_ecc(unsigned int dram_size);
 #endif
 #endif
 
+/*
+ * Return the current value of a monotonically increasing microsecond timer.
+ * Granularity may be larger than 1us if hardware does not support this.
+ */
+ulong timer_get_us(void);
+
 /* $(CPU)/cpu.c */
 static inline int cpumask_next(int cpu, unsigned int mask)
 {