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fbdev/sa1100fb: Initialize fb_ops to fbdev I/O-memory helpers

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

Fbdev drivers sometimes rely on the callbacks being NULL for a
default 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.

No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-34-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:27:06 +02:00
parent 633ca05f6c
commit 3bf4f1b3de
2 changed files with 3 additions and 6 deletions
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4
drivers/video/fbdev/Kconfig
View file

@ -159,9 +159,7 @@ config FB_CLPS711X
config FB_SA1100
bool "SA-1100 LCD support"
depends on (FB = y) && ARM && ARCH_SA1100
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_IOMEM_HELPERS
help
This is a framebuffer device for the SA-1100 LCD Controller.
See <http://www.linux-fbdev.org/> for information on framebuffer

5
drivers/video/fbdev/sa1100fb.c
View file

@ -575,14 +575,13 @@ static int sa1100fb_mmap(struct fb_info *info,
static const struct fb_ops sa1100fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = sa1100fb_check_var,
.fb_set_par = sa1100fb_set_par,
// .fb_set_cmap = sa1100fb_set_cmap,
.fb_setcolreg = sa1100fb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_blank = sa1100fb_blank,
__FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_mmap = sa1100fb_mmap,
};