path: root/drivers
diff options
authorPrashant Laddha <prladdha@cisco.com>2015-09-22 11:27:28 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-11-17 15:05:14 -0200
commit8d7322f4f753644bd00d3a7a267c43f506a0b9c1 (patch)
tree727c1feb893e0ab3e9849ba730c0cf6b1066bc80 /drivers
parent0d51ebd3f41f195e33ed8d9b9d67ed90f6e298ec (diff)
[media] v4l2-dv-timings: add condition checks for reduced fps
Added a helper function to check necessary conditions required for reduced fps. The reduced fps is supported for CVT and CEA861 timings. CVT supports reduced fps only if reduced blanking v2 (indicated by vsync = 8) is true. Whereas CEA861 supports reduced fps if V4L2_DV_FL_CAN_REDUCE_FPS flag is true. Signed-off-by: Prashant Laddha <prladdha@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers')
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c
index edb4125d1018..9926d521ea88 100644
--- a/drivers/media/v4l2-core/v4l2-dv-timings.c
+++ b/drivers/media/v4l2-core/v4l2-dv-timings.c
@@ -210,7 +210,12 @@ bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
fnc, fnc_handle) &&
v4l2_match_dv_timings(t, v4l2_dv_timings_presets + i,
pclock_delta)) {
+ u32 flags = t->bt.flags & V4L2_DV_FL_REDUCED_FPS;
*t = v4l2_dv_timings_presets[i];
+ if (can_reduce_fps(&t->bt))
+ t->bt.flags |= flags;
return true;

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