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31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
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From 03e0e348df7b685439f2db61ec2d8c8da25d1217 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Wed, 23 Aug 2023 17:48:23 +0100
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Subject: [PATCH] drm/vc4: UV planes vertical scaling must always be enabled
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It has been observed that a YUV422 unity scaled plane isn't displayed.
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Enabling vertical scaling on the UV planes solves this. There is
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already a similar clause to always enable horizontal scaling on the
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UV planes.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_plane.c | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_plane.c
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+++ b/drivers/gpu/drm/vc4/vc4_plane.c
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@@ -522,6 +522,12 @@ static int vc4_plane_setup_clipping_and_
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*/
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if (vc4_state->x_scaling[1] == VC4_SCALING_NONE)
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vc4_state->x_scaling[1] = VC4_SCALING_PPF;
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+
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+ /* Similarly UV needs vertical scaling to be enabled.
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+ * Without this a 1:1 scaled YUV422 plane isn't rendered.
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+ */
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+ if (vc4_state->y_scaling[1] == VC4_SCALING_NONE)
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+ vc4_state->y_scaling[1] = VC4_SCALING_PPF;
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} else {
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vc4_state->is_yuv = false;
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vc4_state->x_scaling[1] = VC4_SCALING_NONE;
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