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authorSascha Hauer <s.hauer@pengutronix.de>2008-08-11 09:52:39 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2008-08-13 16:41:22 +0200
commit4c01ac2e0e6f584feea933bd04ae2dfa82cfdbc4 (patch)
treee92068968f103d09e16c7dc797eea58ee6f3e0bd /common/clock.c
parentda4d33969e23589191dda3c4c7041a84ba42a583 (diff)
downloadbarebox-4c01ac2e0e6f584feea933bd04ae2dfa82cfdbc4.tar.gz
clocK: Add ndelay function
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/clock.c')
-rw-r--r--common/clock.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/common/clock.c b/common/clock.c
index e22b6a5..ad708ad 100644
--- a/common/clock.c
+++ b/common/clock.c
@@ -92,6 +92,14 @@ int is_timeout(uint64_t start_ns, uint64_t time_offset_ns)
}
EXPORT_SYMBOL(is_timeout);
+void ndelay(unsigned long nsecs)
+{
+ uint64_t start = get_time_ns();
+
+ while(!is_timeout(start, nsecs));
+}
+EXPORT_SYMBOL(ndelay);
+
void udelay(unsigned long usecs)
{
uint64_t start = get_time_ns();