From c61b93fe51b1330cfc4d73084b924931bd65c8f0 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Tue, 7 Jun 2016 13:47:56 +0200 Subject: drm/atomic: Fix remaining places where !funcs->best_encoder is valid Adapt drm_pick_crtcs() and update_connector_routing() to fallback to drm_atomic_helper_best_encoder() if funcs->best_encoder() is NULL so that DRM drivers can leave this hook unassigned if they know they want to use drm_atomic_helper_best_encoder(). Update the vtables documentation accordingly. Signed-off-by: Boris Brezillon Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1465300095-16971-2-git-send-email-boris.brezillon@free-electrons.com --- include/drm/drm_modeset_helper_vtables.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h index d4619dc2eecb..4e7a53b12632 100644 --- a/include/drm/drm_modeset_helper_vtables.h +++ b/include/drm/drm_modeset_helper_vtables.h @@ -736,6 +736,11 @@ struct drm_connector_helper_funcs { * inspect dynamic configuration state should instead use * @atomic_best_encoder. * + * You can leave this function to NULL if the connector is only + * attached to a single encoder and you are using the atomic helpers. + * In this case, the core will call drm_atomic_helper_best_encoder() + * for you. + * * RETURNS: * * Encoder that should be used for the given connector and connector @@ -752,8 +757,9 @@ struct drm_connector_helper_funcs { * need to select the best encoder depending upon the desired * configuration and can't select it statically. * - * This function is used by drm_atomic_helper_check_modeset() and either - * this or @best_encoder is required. + * This function is used by drm_atomic_helper_check_modeset(). + * If it is not implemented, the core will fallback to @best_encoder + * (or drm_atomic_helper_best_encoder() if @best_encoder is NULL). * * NOTE: * -- cgit v1.2.3