drm_fb_get_bpp_depth
EXPORT_SYMBOL(drm_fb_get_bpp_depth);
drm_fb_get_bpp_depth(format, &depth, &bpp);
extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth,