drm/ast: Move cursor format conversion into helper function

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Move the format conversion of the cursor framebuffer into the new
helper ast_cursor_plane_get_argb4444(). It returns a buffer in system
memory, which the atomic_update handler copies to video memory.

The returned buffer is either the GEM buffer itself, or a temporary
copy within the plane in ARGB4444 format.

As a small change, list supported formats explicitly in the switch
statement. Do not assume ARGB8888 input by default. The cursor
framebuffer knows its format, so should we.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20251126094626.41985-2-tzimmermann@suse.de

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Thomas Zimmermann 2025-11-26 10:40:08 +01:00

parent e85e9ccf3f

commit 1e759ed22a

1 changed files with 39 additions and 23 deletions

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drivers/gpu/drm/ast/ast_cursor.c

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