Prepare the bridge driver for chained operation by adding support for the detect operation.
v3: - Fix code to make it readable (Laurent)
v2: - Do not announce detect operation if there is no hpd pin (Laurent)
Signed-off-by: Sam Ravnborg sam@ravnborg.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Andrzej Hajda a.hajda@samsung.com Cc: Neil Armstrong narmstrong@baylibre.com Cc: Laurent Pinchart Laurent.pinchart@ideasonboard.com Cc: Jonas Karlman jonas@kwiboo.se Cc: Jernej Skrabec jernej.skrabec@siol.net --- drivers/gpu/drm/bridge/tc358767.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index c2777b226c75..bde89e213882 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1369,21 +1369,13 @@ static const struct drm_connector_helper_funcs tc_connector_helper_funcs = { .get_modes = tc_connector_get_modes, };
-static enum drm_connector_status tc_connector_detect(struct drm_connector *connector, - bool force) +static enum drm_connector_status tc_bridge_detect(struct drm_bridge *bridge) { - struct tc_data *tc = connector_to_tc(connector); + struct tc_data *tc = bridge_to_tc(bridge); bool conn; u32 val; int ret;
- if (tc->hpd_pin < 0) { - if (tc->panel) - return connector_status_connected; - else - return connector_status_unknown; - } - ret = regmap_read(tc->regmap, GPIOI, &val); if (ret) return connector_status_unknown; @@ -1396,6 +1388,20 @@ static enum drm_connector_status tc_connector_detect(struct drm_connector *conne return connector_status_disconnected; }
+static enum drm_connector_status +tc_connector_detect(struct drm_connector *connector, bool force) +{ + struct tc_data *tc = connector_to_tc(connector); + + if (tc->hpd_pin >= 0) + return tc_bridge_detect(&tc->bridge); + + if (tc->panel) + return connector_status_connected; + else + return connector_status_unknown; +} + static const struct drm_connector_funcs tc_connector_funcs = { .detect = tc_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, @@ -1458,6 +1464,7 @@ static const struct drm_bridge_funcs tc_bridge_funcs = { .disable = tc_bridge_disable, .post_disable = tc_bridge_post_disable, .mode_fixup = tc_bridge_mode_fixup, + .detect = tc_bridge_detect, };
static bool tc_readable_reg(struct device *dev, unsigned int reg) @@ -1680,6 +1687,9 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) return ret;
tc->bridge.funcs = &tc_bridge_funcs; + if (tc->hpd_pin >= 0) + tc->bridge.ops |= DRM_BRIDGE_OP_DETECT; + tc->bridge.of_node = dev->of_node; drm_bridge_add(&tc->bridge);