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openmptcprouter/6.12/target/linux/bcm27xx/patches-6.12/950-0622-drm-vc4-Enable-bg_fill-if-there-are-no-planes-enable.patch
Ycarus (Yannick Chabanois) bdb9b0046f Add bcm27xx 6.12 test support
2024-12-20 14:17:26 +01:00

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1.3 KiB
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From 2545c41cb176612d9ee860ad613eb55fb8e433de Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Fri, 25 Oct 2024 18:15:58 +0100
Subject: [PATCH 622/697] drm/vc4: Enable bg_fill if there are no planes
enabled
The default was to have enable_bg_fill disabled and the first
plane set it if it wasn't opaque and covering the whole screen.
However that meant that if no planes were enabled, then the
background fill wasn't enabled, and would give a striped
output from the uninitialised output buffer.
Initialise it to enabled to avoid this.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025-drm-vc4-2712-support-v2-27-35efa83c8fc0@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_hvs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -936,7 +936,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
struct drm_plane *plane;
struct vc4_plane_state *vc4_plane_state;
bool debug_dump_regs = false;
- bool enable_bg_fill = false;
+ bool enable_bg_fill = true;
u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;
u32 __iomem *dlist_next = dlist_start;
unsigned int zpos = 0;