Allow atomic_enable and atomic_disable operations from
drm_crtc_helper_funcs struct optional. With this, the target display
drivers don't need to define a dummy function if they don't need one.
Changes since v2:
* Don't make funcs optional
* Update kerneldoc for atomic_enable/disable
* Replace "if (funcs->atomic_enable)" by "if (funcs->commit)"
* Improve commit message
Signed-off-by: Rodrigo Siqueira <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Gerd Hoffmann <[email protected]>