[media] v4l2-dv-timings: add helpers for vic and pixelaspect ratio

Add a helper to find timings based on the CEA-861 VIC code. Also,
add a helper that returns the pixel aspect ratio based on the
v4l2_dv_timings struct.

[mchehab@s-opensource.com: fix coding style]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h
index 0a7d9e1fc8c8..61a18893e004 100644
--- a/include/media/v4l2-dv-timings.h
+++ b/include/media/v4l2-dv-timings.h
@@ -101,12 +101,22 @@ bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
 			      void *fnc_handle);
 
 /**
+ * v4l2_find_dv_timings_cea861_vic() - find timings based on CEA-861 VIC
+ * @t:		the timings data.
+ * @vic:	CEA-861 VIC code
+ *
+ * On success it will fill in @t with the found timings and it returns true.
+ * On failure it will return false.
+ */
+bool v4l2_find_dv_timings_cea861_vic(struct v4l2_dv_timings *t, u8 vic);
+
+/**
  * v4l2_match_dv_timings() - do two timings match?
  *
  * @measured:	  the measured timings data.
  * @standard:	  the timings according to the standard.
  * @pclock_delta: maximum delta in Hz between standard->pixelclock and
- * 		the measured timings.
+ *		the measured timings.
  * @match_reduced_fps: if true, then fail if V4L2_DV_FL_REDUCED_FPS does not
  * match.
  *
@@ -185,6 +195,14 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
  */
 struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
 
+/**
+ * v4l2_dv_timings_aspect_ratio - calculate the aspect ratio based on the
+ *	v4l2_dv_timings information.
+ *
+ * @t: the timings data.
+ */
+struct v4l2_fract v4l2_dv_timings_aspect_ratio(const struct v4l2_dv_timings *t);
+
 /*
  * reduce_fps - check if conditions for reduced fps are true.
  * bt - v4l2 timing structure