drm/gma500: Create the primary plane in the driver

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drm_crtc_init() creates the primary plane from a fixed format list
that includes ARGB8888. The display engine programs the primary plane
with DISPPLANE_32BPP_NO_ALPHA, so it does not support per-pixel alpha
and must not advertise alpha formats. Since commit 860e748bdd
("drm: ensure blend mode supported if pixel format with alpha exposed"),
drm_mode_config_validate() warns about this at probe time.

Replace drm_crtc_init() with a driver-owned primary plane that
advertises only XRGB8888. The plane is allocated by
drmm_universal_plane_alloc() and the "pixel blend mode" property is
not needed because no format with alpha is exposed.

Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patch.msgid.link/20260903071149.423579-1-oushixiong1025@163.com

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Shixiong Ou 2026-09-03 15:11:49 +08:00 • committed by Patrik Jakobsson

parent dfd2bd7af6

commit 8ce26b09f6

1 changed files with 33 additions and 1 deletions

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drivers/gpu/drm/gma500/psb_intel_display.c

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