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drm/vc4: Enable bg_fill if there are no planes enabled

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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>
This commit is contained in:
Dave Stevenson 2024-10-25 18:15:58 +01:00
parent 3e048861c5
commit 52b0a07316
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/vc4/vc4_hvs.c
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@ -936,7 +936,7 @@ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
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;