fbdev/cg6: Use initializer macro for struct fb_ops

Initialize struct fb_ops to the correct default values with the
internal __FB_DEFAULT_SBUS_OPS_*() macros. Rename the ioctl and
mmap callbacks to use the infix _sbusfb_. This makes them fit the
SBUS helpers' naming pattern.

It is not possible to use set all defaults via FB_DEAFULT_SBUS_OPS(),
as cg6 provides its own implementation of fb_fillrect, fb_copyarea,
and fb_imageblit. Hence we also avoid FB_SBUS_HELPERS, but let the
driver select its dependencies individually instead.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230806120926.5368-8-tzimmermann@suse.de

drivers/video/fbdev/cg6.c

@@ -36,16 +36,18 @@ static void cg6_imageblit(struct fb_info *, const struct fb_image *);
 static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
 static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 static int cg6_sync(struct fb_info *);
-static int cg6_mmap(struct fb_info *, struct vm_area_struct *);
-static int cg6_ioctl(struct fb_info *, unsigned int, unsigned long);
 static int cg6_pan_display(struct fb_var_screeninfo *, struct fb_info *);
 
+static int cg6_sbusfb_mmap(struct fb_info *info, struct vm_area_struct *vma);
+static int cg6_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg);
+
 /*
  *  Frame buffer operations
  */
 
 static const struct fb_ops cg6_ops = {
 	.owner			= THIS_MODULE,
+	__FB_DEFAULT_SBUS_OPS_RDWR(cg6),
 	.fb_setcolreg		= cg6_setcolreg,
 	.fb_blank		= cg6_blank,
 	.fb_pan_display		= cg6_pan_display,
@@ -53,11 +55,8 @@ static const struct fb_ops cg6_ops = {
 	.fb_copyarea		= cg6_copyarea,
 	.fb_imageblit		= cg6_imageblit,
 	.fb_sync		= cg6_sync,
-	.fb_mmap		= cg6_mmap,
-	.fb_ioctl		= cg6_ioctl,
-#ifdef CONFIG_COMPAT
-	.fb_compat_ioctl	= sbusfb_compat_ioctl,
-#endif
+	__FB_DEFAULT_SBUS_OPS_IOCTL(cg6),
+	__FB_DEFAULT_SBUS_OPS_MMAP(cg6),
 };
 
 /* Offset of interesting structures in the OBIO space */
@@ -589,7 +588,7 @@ static struct sbus_mmap_map cg6_mmap_map[] = {
 	{ .size	= 0 }
 };
 
-static int cg6_mmap(struct fb_info *info, struct vm_area_struct *vma)
+static int cg6_sbusfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 {
 	struct cg6_par *par = (struct cg6_par *)info->par;
 
@@ -598,7 +597,7 @@ static int cg6_mmap(struct fb_info *info, struct vm_area_struct *vma)
 				  par->which_io, vma);
 }
 
-static int cg6_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
+static int cg6_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 {
 	return sbusfb_ioctl_helper(cmd, arg, info,
 				   FBTYPE_SUNFAST_COLOR, 8, info->fix.smem_len);