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openwrt/target/linux/bcm27xx/patches-6.6/950-0596-drm-vc4-UV-planes-vertical-scaling-must-always-be-en.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

32 lines
1.1 KiB
Diff

From a3fe2fa1ae15108705c5b56f4191414d6dc56188 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Wed, 23 Aug 2023 17:48:23 +0100
Subject: [PATCH 0596/1085] drm/vc4: UV planes vertical scaling must always be
enabled
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.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_plane.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -522,6 +522,12 @@ static int vc4_plane_setup_clipping_and_
*/
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;