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@xxxxxxx>
Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---
drivers/video/fbdev/Kconfig | 1 +
drivers/video/fbdev/wm8505fb.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 4e06e403d0217..004a63cdea5a3 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -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
diff --git a/drivers/video/fbdev/wm8505fb.c b/drivers/video/fbdev/wm8505fb.c
index 5833147aa43d1..00952e9c88028 100644
--- a/drivers/video/fbdev/wm8505fb.c
+++ b/drivers/video/fbdev/wm8505fb.c
@@ -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)
--
2.43.0
