4.9-stable review patch. If anyone has any objections, please let me know.
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From: Mihail Atanassov mihail.atanassov@arm.com
[ Upstream commit c7ffa59cf03c38b91d6ef01e42c1b52fd7a4f285 ]
When updating the rotation fields, one of the assignments zeroes out the rest of the register fields, which include settings for chroma siting, inverse gamma, AMBA AXI caching, and alpha blending.
Signed-off-by: Mihail Atanassov mihail.atanassov@arm.com Signed-off-by: Liviu Dudau Liviu.Dudau@arm.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/arm/malidp_planes.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/arm/malidp_planes.c +++ b/drivers/gpu/drm/arm/malidp_planes.c @@ -182,7 +182,8 @@ static void malidp_de_plane_update(struc
/* setup the rotation and axis flip bits */ if (plane->state->rotation & DRM_ROTATE_MASK) - val = ilog2(plane->state->rotation & DRM_ROTATE_MASK) << LAYER_ROT_OFFSET; + val |= ilog2(plane->state->rotation & DRM_ROTATE_MASK) << + LAYER_ROT_OFFSET; if (plane->state->rotation & DRM_REFLECT_X) val |= LAYER_H_FLIP; if (plane->state->rotation & DRM_REFLECT_Y)