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fbdev/au1200fb: Initialize fb_ops with fbdev macros

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

Fbdev drivers sometimes rely on the callbacks being NULL for a
default I/O-memory-based 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.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-18-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-11-27 14:15:46 +01:00
parent cb99b486a5
commit dfc3052256
2 changed files with 3 additions and 9 deletions
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5
drivers/video/fbdev/Kconfig
View file

@ -1457,10 +1457,7 @@ config FB_AU1100
config FB_AU1200
bool "Au1200/Au1300 LCD Driver"
depends on (FB = y) && MIPS_ALCHEMY
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DMAMEM_HELPERS
help
This is the framebuffer driver for the Au1200/Au1300 SOCs.
It can drive various panels and CRTs by passing in kernel cmd line

7
drivers/video/fbdev/au1200fb.c
View file

@ -1488,15 +1488,12 @@ static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
static const struct fb_ops au1200fb_fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_DMAMEM_OPS_RDWR,
.fb_check_var = au1200fb_fb_check_var,
.fb_set_par = au1200fb_fb_set_par,
.fb_setcolreg = au1200fb_fb_setcolreg,
.fb_blank = au1200fb_fb_blank,
.fb_fillrect = sys_fillrect,
.fb_copyarea = sys_copyarea,
.fb_imageblit = sys_imageblit,
.fb_read = fb_sys_read,
.fb_write = fb_sys_write,
__FB_DEFAULT_DMAMEM_OPS_DRAW,
.fb_sync = NULL,
.fb_ioctl = au1200fb_ioctl,
.fb_mmap = au1200fb_fb_mmap,