struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size @fb_width: fbdev width @fb_height: fbdev height @surface_width: scanout buffer width @surface_height: scanout buffer height @surface_bpp: scanout buffer bpp @surface_depth: scanout buffer depth
Note that the scanout surface width/height may be larger than the fbdev width/height. In case of multiple displays, the scanout surface is sized according to the largest width/height (so it is large enough for all CRTCs to scanout). But the fbdev width/height is sized to the minimum width/ height of all the displays. This ensures that fbcon fits on the smallest of the attached displays. fb_width/fb_height is used by drm_fb_helper_fill_info() to fill out the &fb_info.var structure.
