fbdev/vt8500lcdfb: Initialize fb_ops with fbdev macros

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Initialize the instance of struct fb_ops with fbdev initializer
macros for framebuffers in DMA-able virtual address space. Set the
read/write, draw and mmap callbacks to the correct implementation
and avoid implicit defaults. Also select the necessary helpers in
Kconfig.

Fbdev drivers sometimes rely on the callbacks being NULL for a
default I/O-memory-based implementation to be invoked; hence
requiring the I/O helpers to be built in any case. Setting all
callbacks in all drivers explicitly will allow to make the I/O
helpers optional. This benefits systems that do not use these
functions.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-23-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2023-11-27 14:15:51 +01:00

parent dec2d60923

commit 63a11adace

2 changed files with 4 additions and 1 deletions

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1

drivers/video/fbdev/Kconfig

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4

drivers/video/fbdev/vt8500lcdfb.c

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