Currently the driver only handles panel directly connected to the DPI output. Handle the case where a bridge is connected past DPI output of this bridge. This could be e.g. DPI to LVDS encoder chip.
Signed-off-by: Marek Vasut <[email protected]> Cc: Jonas Karlman <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Lucas Stach <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Neil Armstrong <[email protected]> Cc: Robert Foss <[email protected]> Cc: Sam Ravnborg <[email protected]> --- drivers/gpu/drm/bridge/tc358767.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index f8c1cd711753b..814ab206fe7ef 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1926,22 +1926,23 @@ static int tc_mipi_dsi_host_attach(struct tc_data *tc) static int tc_probe_dpi_bridge_endpoint(struct tc_data *tc) { struct device *dev = tc->dev; + struct drm_bridge *bridge; struct drm_panel *panel; int ret; /* port@1 is the DPI input/output port */ - ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge); if (ret && ret != -ENODEV) return ret; if (panel) { - struct drm_bridge *panel_bridge; - - panel_bridge = devm_drm_panel_bridge_add(dev, panel); - if (IS_ERR(panel_bridge)) - return PTR_ERR(panel_bridge); + bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); + } - tc->panel_bridge = panel_bridge; + if (bridge) { + tc->panel_bridge = bridge; tc->bridge.type = DRM_MODE_CONNECTOR_DPI; tc->bridge.funcs = &tc_dpi_bridge_funcs; -- 2.35.1
