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fbdev/wm8505fb: 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 DMA-able address space. This explictily
sets the read/write, draw and mmap callbacks to the correct default
implementation. Also select the necessary helpers in Kconfig.

Fbdev drivers sometimes rely on the callbacks being NULL for a
default implementation to be invoked; hence requireing 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.

Set the callbacks via macros. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-24-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-11-27 14:15:52 +01:00
parent 63a11adace
commit 11754a5046
2 changed files with 3 additions and 0 deletions
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1
drivers/video/fbdev/Kconfig
View File

@ -1480,6 +1480,7 @@ config FB_WM8505
select FB_SYS_FILLRECT if (!FB_WMT_GE_ROPS)
select FB_SYS_COPYAREA if (!FB_WMT_GE_ROPS)
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_MODE_HELPERS
select VIDEOMODE_HELPERS
help

2
drivers/video/fbdev/wm8505fb.c
View File

@ -248,6 +248,7 @@ static int wm8505fb_blank(int blank, struct fb_info *info)
static const struct fb_ops wm8505fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_DMAMEM_OPS_RDWR,
.fb_set_par = wm8505fb_set_par,
.fb_setcolreg = wm8505fb_setcolreg,
.fb_fillrect = wmt_ge_fillrect,
@ -256,6 +257,7 @@ static const struct fb_ops wm8505fb_ops = {
.fb_sync = wmt_ge_sync,
.fb_pan_display = wm8505fb_pan_display,
.fb_blank = wm8505fb_blank,
__FB_DEFAULT_IOMEM_OPS_MMAP,
};
static int wm8505fb_probe(struct platform_device *pdev)