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drm/vc4: plane: YUV planes require vertical scaling to always be enabled

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It has been observed that a YUV422 unity scaled plane isn't displayed.
Enabling vertical scaling on the UV planes solves this. There is
already a similar clause to always enable horizontal scaling on the
UV planes.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-16-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2024-06-21 16:20:39 +01:00
parent 52efe364d1
commit 542962190e
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/vc4/vc4_plane.c
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@@ -517,6 +517,12 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
*/
if (vc4_state->x_scaling[1] == VC4_SCALING_NONE)
vc4_state->x_scaling[1] = VC4_SCALING_PPF;
/* Similarly UV needs vertical scaling to be enabled.
* Without this a 1:1 scaled YUV422 plane isn't rendered.
*/
if (vc4_state->y_scaling[1] == VC4_SCALING_NONE)
vc4_state->y_scaling[1] = VC4_SCALING_PPF;
} else {
vc4_state->is_yuv = false;
vc4_state->x_scaling[1] = VC4_SCALING_NONE;