[media] v4l2-dv-timings: add v4l2_print_dv_timings helper

Drivers often have to log the contents of a dv_timings struct. Adding
this helper will make it easier for drivers to do so.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h
index 4c7bb5491658..696e5c2fd176 100644
--- a/include/media/v4l2-dv-timings.h
+++ b/include/media/v4l2-dv-timings.h
@@ -76,6 +76,15 @@ bool v4l_match_dv_timings(const struct v4l2_dv_timings *measured,
                           const struct v4l2_dv_timings *standard,
                           unsigned pclock_delta);
 
+/** v4l2_print_dv_timings() - log the contents of a dv_timings struct
+  * @dev_prefix:device prefix for each log line.
+  * @prefix:    additional prefix for each log line, may be NULL.
+  * @t:         the timings data.
+  * @detailed:  if true, give a detailed log.
+  */
+void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix,
+                           const struct v4l2_dv_timings *t, bool detailed);
+
 /** v4l2_detect_cvt - detect if the given timings follow the CVT standard
  * @frame_height - the total height of the frame (including blanking) in lines.
  * @hfreq - the horizontal frequency in Hz.