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STRUCT DRM_FB_HELPER(9) DRM Core STRUCT DRM_FB_HELPER(9)

NAME

struct_drm_fb_helper_funcs - driver callbacks for the fbdev emulation library

SYNOPSIS

struct drm_fb_helper_funcs {
  void (* gamma_set) (struct drm_crtc *crtc, u16 red, u16 green,u16 blue, int regno);
  void (* gamma_get) (struct drm_crtc *crtc, u16 *red, u16 *green,u16 *blue, int regno);
  int (* fb_probe) (struct drm_fb_helper *helper,struct drm_fb_helper_surface_size *sizes);
  bool (* initial_config) (struct drm_fb_helper *fb_helper,struct drm_fb_helper_crtc **crtcs,struct drm_display_mode **modes,bool *enabled, int width, int height);
};

MEMBERS

gamma_set
Set the given gamma lut register on the given crtc.
gamma_get
Read the given gamma lut register on the given crtc, used to save the current lut when force-restoring the fbdev for e.g. kdbg.
fb_probe
Driver callback to allocate and initialize the fbdev info structure. Furthermore it also needs to allocate the drm framebuffer used to back the fbdev.
initial_config
Setup an initial fbdev display configuration

DESCRIPTION

Driver callbacks used by the fbdev emulation helper library.

AUTHORS

Jesse Barnes <jesse.barnes@intel.com>
 
Intel Corporation,
Initial version
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 
Ideas on board SPRL,
Driver internals
Daniel Vetter <daniel.vetter@ffwll.ch>
 
Intel Corporation,
Contributions all over the place

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16