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fbdev/tgafb: 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/20230927074722.6197-42-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:27:14 +02:00
parent 309ede0f94
commit 153fc9bbac
2 changed files with 4 additions and 1 deletions
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3
drivers/video/fbdev/Kconfig
View File

@ -416,10 +416,11 @@ config FB_TGA
depends on FB
depends on PCI || TC
depends on ALPHA || TC
select BITREVERSE
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select BITREVERSE
select FB_IOMEM_FOPS
select VIDEO_NOMODESET
help
This is the frame buffer device driver for generic TGA and SFB+

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

@ -73,6 +73,7 @@ static struct tc_driver tgafb_tc_driver;
static const struct fb_ops tgafb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = tgafb_check_var,
.fb_set_par = tgafb_set_par,
.fb_setcolreg = tgafb_setcolreg,
@ -81,6 +82,7 @@ static const struct fb_ops tgafb_ops = {
.fb_fillrect = tgafb_fillrect,
.fb_copyarea = tgafb_copyarea,
.fb_imageblit = tgafb_imageblit,
__FB_DEFAULT_IOMEM_OPS_MMAP,
};