• Archit Taneja's avatar
    drm: Add top level Kconfig option for DRM fbdev emulation · a03fdcb1
    Archit Taneja authored
    Legacy fbdev emulation support via DRM is achieved through KMS FB helpers.
    Most modesetting drivers enable provide fbdev emulation by default by
    selecting KMS FB helpers. A few provide a separate Kconfig option for the
    user to enable or disbale fbdev emulation.
    
    Enabling fbdev emulation is finally a distro-level decision. Having a top
    level Kconfig option for fbdev emulation helps by providing a uniform way
    to enable/disable fbdev emulation for any modesetting driver. It also lets
    us remove unnecessary driver specific Kconfig options that causes bloat.
    
    With a top level Kconfig in place, we can stub out the fb helper functions
    when not needed without breaking functionality. Having stub functions also
    prevents drivers to require wrapping fb helper function calls with #ifdefs.
    
    DRM_FBDEV_EMULATION defaults to y since many drivers enable fbdev
    emulation by default and majority of distributions expect the fbdev
    interface in the kernel.
    Signed-off-by: default avatarArchit Taneja <architt@codeaurora.org>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    a03fdcb1
Makefile 2.53 KB