Function drm_ffi::mode::set_gamma

pub fn set_gamma(
    fd: RawFd, 
    crtc_id: u32, 
    size: usize, 
    red: &[u16], 
    green: &[u16], 
    blue: &[u16]
) -> Result<drm_mode_crtc_lut, Error>

Set CRTC gamma ramp