drm/nouveau/kms/nv50-: Introduce nv50_wndw_default_state()

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While we don't currently read-in the hardware state of planes, now that
we're about to start exposing blend properties for all planes that can
support alpha channels: We need to make sure that the initial atomic state
for a wndw always starts off with a supported value in pixel_blend_mode.

The easiest way to do this is to introduce a nv50_wndw_default_state()
function, and use it in nv50_display_read_hw_state() - and use that
function to enforce a valid value for pixel_blend_mode during driver
startup.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Fixes: 860e748bdd ("drm: ensure blend mode supported if pixel format with alpha exposed")
Link: https://patch.msgid.link/20260720215058.398210-3-lyude@redhat.com

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Lyude Paul 2026-07-20 17:36:17 -04:00

parent a7e8cf887a

commit 8d092b0523

3 changed files with 27 additions and 0 deletions

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4

drivers/gpu/drm/nouveau/dispnv50/disp.c

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22

drivers/gpu/drm/nouveau/dispnv50/wndw.c

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drivers/gpu/drm/nouveau/dispnv50/wndw.h

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