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fbdev/arkfb: 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/20230927074722.6197-6-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:26:38 +02:00
parent 48c3734d41
commit 7421a6303e
2 changed files with 3 additions and 0 deletions
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1
drivers/video/fbdev/Kconfig
View File

@ -1381,6 +1381,7 @@ config FB_ARK
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_IOMEM_FOPS
select FB_TILEBLITTING
select FB_SVGALIB
select VGASTATE

2
drivers/video/fbdev/arkfb.c
View File

@ -924,6 +924,7 @@ static const struct fb_ops arkfb_ops = {
.owner = THIS_MODULE,
.fb_open = arkfb_open,
.fb_release = arkfb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = arkfb_check_var,
.fb_set_par = arkfb_set_par,
.fb_setcolreg = arkfb_setcolreg,
@ -932,6 +933,7 @@ static const struct fb_ops arkfb_ops = {
.fb_fillrect = arkfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = arkfb_imageblit,
__FB_DEFAULT_IOMEM_OPS_MMAP,
.fb_get_caps = svga_get_caps,
};