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fbdev/au1100fb: Initialize fb_ops to fbdev I/O-memory helpers 

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/20230927074722.6197-9-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:26:41 +02:00
parent 94cab8f6b2
commit 93ede59ccd
2 changed files with 4 additions and 8 deletions
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4
drivers/video/fbdev/Kconfig
View File

@ -1434,9 +1434,7 @@ endchoice
config FB_AU1100
bool "Au1100 LCD Driver"
depends on (FB = y) && MIPS_ALCHEMY
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_IOMEM_HELPERS
help
This is the framebuffer driver for the AMD Au1100 SOC. It can drive
various panels and CRTs by passing in kernel cmd line option

8
drivers/video/fbdev/au1100fb.c
View File

@ -348,15 +348,13 @@ int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
fbdev->fb_len);
}
static const struct fb_ops au1100fb_ops =
{
static const struct fb_ops au1100fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_setcolreg = au1100fb_fb_setcolreg,
.fb_blank = au1100fb_fb_blank,
.fb_pan_display = au1100fb_fb_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
__FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_mmap = au1100fb_fb_mmap,
};