[39/46] fbdev/sunxvr500: Initialize fb_ops to fbdev I/O-memory helpers

Commit Message

Thomas Zimmermann Sept. 27, 2023, 7:27 a.m. UTC

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 <[e-mail]>
---
 drivers/video/fbdev/Kconfig     | 1 +
 drivers/video/fbdev/sunxvr500.c | 2 ++
 2 files changed, 3 insertions(+)

Patch

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index a7587f680e3a2..1da6bf1eb6ff6 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -596,6 +596,7 @@  config FB_XVR500
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
+	select FB_IOMEM_FOPS
 	select VIDEO_NOMODESET
 	help
 	  This is the framebuffer device for the Sun XVR-500 and similar
diff --git a/drivers/video/fbdev/sunxvr500.c b/drivers/video/fbdev/sunxvr500.c
index 3b7dcdae9f83f..fef008b728dde 100644
--- a/drivers/video/fbdev/sunxvr500.c
+++ b/drivers/video/fbdev/sunxvr500.c
@@ -189,10 +189,12 @@  static void e3d_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 
 static const struct fb_ops e3d_ops = {
 	.owner			= THIS_MODULE,
+	__FB_DEFAULT_IOMEM_OPS_RDWR,
 	.fb_setcolreg		= e3d_setcolreg,
 	.fb_fillrect		= e3d_fillrect,
 	.fb_copyarea		= e3d_copyarea,
 	.fb_imageblit		= e3d_imageblit,
+	__FB_DEFAULT_IOMEM_OPS_MMAP,
 };
 
 static int e3d_set_fbinfo(struct e3d_info *ep)