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fbdev/viafb: 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>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-46-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:27:18 +02:00
parent e47e199cc2
commit fb159df356
2 changed files with 3 additions and 0 deletions
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1
drivers/video/fbdev/Kconfig
View File

@ -1240,6 +1240,7 @@ config FB_VIA
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_IOMEM_FOPS
select I2C_ALGOBIT
select VIDEO_NOMODESET
help

2
drivers/video/fbdev/via/viafbdev.c
View File

@ -2054,6 +2054,7 @@ static struct fb_ops viafb_ops = {
.owner = THIS_MODULE,
.fb_open = viafb_open,
.fb_release = viafb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = viafb_check_var,
.fb_set_par = viafb_set_par,
.fb_setcolreg = viafb_setcolreg,
@ -2065,6 +2066,7 @@ static struct fb_ops viafb_ops = {
.fb_cursor = viafb_cursor,
.fb_ioctl = viafb_ioctl,
.fb_sync = viafb_sync,
__FB_DEFAULT_IOMEM_OPS_MMAP,
};