summaryrefslogtreecommitdiffstats
path: root/common/clock.c
diff options
context:
space:
mode:
authorAntony Pavlov <antonynpavlov@gmail.com>2014-12-02 03:03:28 +0300
committerSascha Hauer <s.hauer@pengutronix.de>2014-12-17 12:15:11 +0100
commitfbb3be384548b1ded9ebcc4a4b45ff57bd2f38a1 (patch)
tree16a452bed34cb2adaac0fca3efda7bb3b13a2be6 /common/clock.c
parent704f59fe652bfca0d649390956530cb3ae43db24 (diff)
downloadbarebox-fbb3be384548b1ded9ebcc4a4b45ff57bd2f38a1.tar.gz
clock: incorporate dummy clocksource into core clock code
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/clock.c')
-rw-r--r--common/clock.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/common/clock.c b/common/clock.c
index 2ee81da..35c9e6c 100644
--- a/common/clock.c
+++ b/common/clock.c
@@ -22,6 +22,7 @@
*/
#include <common.h>
+#include <init.h>
#include <asm-generic/div64.h>
#include <clock.h>
#include <poller.h>
@@ -35,6 +36,16 @@ static uint64_t time_ns;
*/
uint64_t time_beginning;
+static int dummy_csrc_warn(void)
+{
+ if (!current_clock) {
+ pr_warn("Warning: Using dummy clocksource\n");
+ }
+
+ return 0;
+}
+late_initcall(dummy_csrc_warn);
+
/**
* get_time_ns - get current timestamp in nanoseconds
*/
@@ -44,8 +55,13 @@ uint64_t get_time_ns(void)
uint64_t cycle_now, cycle_delta;
uint64_t ns_offset;
- if (!cs)
- return 0;
+ if (!cs) {
+ static uint64_t dummy_counter;
+
+ dummy_counter += CONFIG_CLOCKSOURCE_DUMMY_RATE;
+
+ return dummy_counter;
+ }
/* read clocksource: */
cycle_now = cs->read() & cs->mask;