drm: Make the connector .detect() callback optional

Many drivers (21 to be exact) create connectors that are always
connected (for instance to an LVDS or DSI panel). Instead of forcing
them to implement a dummy .detect() handler, make the callback optional
and consider the connector as always connected in that case.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Vincent Abriou <vincent.abriou@st.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[seanpaul fixed small conflict in rcar-du/rcar_du_lvdscon.c]
Signed-off-by: Sean Paul <seanpaul@chromium.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index b300998dce7d..516d06490465 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -101,12 +101,6 @@ struct imx_ldb {
         const struct bus_mux *lvds_mux;
 };
 
-static enum drm_connector_status imx_ldb_connector_detect(
-                struct drm_connector *connector, bool force)
-{
-        return connector_status_connected;
-}
-
 static void imx_ldb_ch_set_bus_format(struct imx_ldb_channel *imx_ldb_ch,
                                       u32 bus_format)
 {
@@ -397,7 +391,6 @@ static int imx_ldb_encoder_atomic_check(struct drm_encoder *encoder,
 static const struct drm_connector_funcs imx_ldb_connector_funcs = {
         .dpms = drm_atomic_helper_connector_dpms,
         .fill_modes = drm_helper_probe_single_connector_modes,
-        .detect = imx_ldb_connector_detect,
         .destroy = imx_drm_connector_destroy,
         .reset = drm_atomic_helper_connector_reset,
         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,