Commit 39b65316 authored by Chintan Patel's avatar Chintan Patel Committed by Helge Deller
Browse files

fb: Add dev_of_fbinfo() helper for optional sysfs support 



Add dev_of_fbinfo() to return the framebuffer struct device when
CONFIG_FB_DEVICE is enabled, or NULL otherwise.

This allows fbdev drivers to use sysfs interfaces via runtime checks
instead of CONFIG_FB_DEVICE ifdefs, keeping the code clean while
remaining fully buildable.

Suggested-by: default avatarHelge Deller <deller@gmx.de>
Reviewed-by: default avatarHelge Deller <deller@gmx.de>
Reviewed-by: default avatarAndy Shevchenko <andy@kernel.org>
Signed-off-by: default avatarChintan Patel <chintanlike@gmail.com>
Reviewed-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 8f582bcd

include/linux/fb.h

+9 −0
Original line number Diff line number Diff line
@@ -623,6 +623,15 @@ static inline void unlock_fb_info(struct fb_info *info) 
	mutex_unlock(&info->lock);

}



static inline struct device *dev_of_fbinfo(const struct fb_info *info)

{

#ifdef CONFIG_FB_DEVICE

	return info->dev;

#else

	return NULL;

#endif

}



static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,

					   u8 *src, u32 s_pitch, u32 height)

{