From acd8f414c957406c8272cbc380dd50fea945dcf1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 17 Jun 2016 09:33:18 +0100 Subject: drm: Minimally initialise drm_dp_aux MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When trying to split up the initialisation phase and the registration phase, one immediate problem encountered is trying to use our own i2c devices before registration with userspace (to read EDID during device discovery). drm_dp_aux in particular only offers an interface for setting up the device *after* we have exposed the connector via sysfs. In order to break the chicken-and-egg problem, export drm_dp_aux_init() to minimally prepare the i2c device for internal use before drm_connector_register(). Signed-off-by: Chris Wilson Cc: Dave Airlie Cc: Rafael Antognolli Cc: Ville Syrjälä Cc: dri-devel@lists.freedesktop.org [danvet: Amend kerneldoc slightly.] Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1466152398-20157-3-git-send-email-chris@chris-wilson.co.uk --- include/drm/drm_dp_helper.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/drm') diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 5a848e734422..4d85cf2874af 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -805,6 +805,7 @@ int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link); +void drm_dp_aux_init(struct drm_dp_aux *aux); int drm_dp_aux_register(struct drm_dp_aux *aux); void drm_dp_aux_unregister(struct drm_dp_aux *aux); -- cgit v1.2.3