From c4a304d3b1dc9d1732b5d78cc190b5c3e41870d4 Mon Sep 17 00:00:00 2001 From: Meng Yi Date: Fri, 15 Jul 2016 14:53:38 +0800 Subject: [PATCH] drm/fsl-dcu: add support for drm bridge The current output code only supports connection to drm panels. Add code to support drm bridge, to support connections to external connectors. Signed-off-by: Meng Yi Signed-off-by: Stefan Agner --- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index 32eff990d199..26edcc899712 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -180,16 +180,26 @@ static int fsl_dcu_attach_panel(struct fsl_dcu_drm_device *fsl_dev, static int fsl_dcu_attach_endpoint(struct fsl_dcu_drm_device *fsl_dev, const struct of_endpoint *ep) { + struct drm_bridge *bridge; struct device_node *np; np = of_graph_get_remote_port_parent(ep->local_node); fsl_dev->connector.panel = of_drm_find_panel(np); - of_node_put(np); - if (fsl_dev->connector.panel) + if (fsl_dev->connector.panel) { + of_node_put(np); return fsl_dcu_attach_panel(fsl_dev, fsl_dev->connector.panel); + } - return -ENODEV; + bridge = of_drm_find_bridge(np); + of_node_put(np); + if (!bridge) + return -ENODEV; + + fsl_dev->encoder.bridge = bridge; + bridge->encoder = &fsl_dev->encoder; + + return drm_bridge_attach(fsl_dev->drm, bridge); } int fsl_dcu_create_outputs(struct fsl_dcu_drm_device *fsl_dev)