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authorLiviu Dudau <Liviu.Dudau@arm.com>2017-12-15 17:42:19 +0100
committerLiviu Dudau <Liviu.Dudau@arm.com>2018-03-14 12:38:02 +0100
commite0521c05c13cca593d386533c61a646ab3dbcfd9 (patch)
tree0d6e1d0b50205257551483e3581549ece001c1cf /drivers/gpu/drm/arm
parentdrm: mali-dp: Uninitialized variable in malidp_se_check_scaling() (diff)
downloadlinux-e0521c05c13cca593d386533c61a646ab3dbcfd9.tar.xz
linux-e0521c05c13cca593d386533c61a646ab3dbcfd9.zip
drm/mali-dp: Don't enable scaling engine for planes that only rotate.
Currently the scaling engine gets enabled for a plane where the input size differs from the composition size. As rotation is done natively by the plane's hardware layer, we don't need the scaling engine to be enabled. Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm')
-rw-r--r--drivers/gpu/drm/arm/malidp_planes.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 6f813c4c187d..7bc164aa29ee 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -154,8 +154,14 @@ static int malidp_se_check_scaling(struct malidp_plane *mp,
if (ret)
return ret;
- src_w = state->src_w >> 16;
- src_h = state->src_h >> 16;
+ if (state->rotation & MALIDP_ROTATED_MASK) {
+ src_w = state->src_h >> 16;
+ src_h = state->src_w >> 16;
+ } else {
+ src_w = state->src_w >> 16;
+ src_h = state->src_h >> 16;
+ }
+
if ((state->crtc_w == src_w) && (state->crtc_h == src_h)) {
/* Scaling not necessary for this plane. */
mc->scaled_planes_mask &= ~(mp->layer->id);