From 86418f90a4c1a0073db65d8a1e2bf94421117a60 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 22 Mar 2017 08:26:06 -0500 Subject: drm: convert drivers to use of_graph_get_remote_node Convert drivers to use the new of_graph_get_remote_node() helper instead of parsing the endpoint node and then getting the remote device node. Now drivers can just specify the device node and which port/endpoint and get back the connected remote device node. The details of the graph binding are nicely abstracted into the core OF graph code. This changes some error messages to debug messages (in the graph core). Graph connections are often "no connects" depending on the particular board, so we want to avoid spurious messages. Plus the kernel is not a DT validator. Signed-off-by: Rob Herring Acked-by: Neil Armstrong Tested-by: Liviu Dudau Tested-by: Eric Anholt Tested-by: Jyri Sarha Tested by: Archit Taneja Signed-off-by: Sean Paul --- drivers/gpu/drm/arm/malidp_drv.c | 28 ++++------------------------ 1 file changed, 4 insertions(+), 24 deletions(-) (limited to 'drivers/gpu/drm/arm/malidp_drv.c') diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index ea2546f766c2..898c2b58e73d 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -283,7 +283,6 @@ static int malidp_bind(struct device *dev) { struct resource *res; struct drm_device *drm; - struct device_node *ep; struct malidp_drm *malidp; struct malidp_hw_device *hwdev; struct platform_device *pdev = to_platform_device(dev); @@ -398,12 +397,7 @@ static int malidp_bind(struct device *dev) goto init_fail; /* Set the CRTC's port so that the encoder component can find it */ - ep = of_graph_get_next_endpoint(dev->of_node, NULL); - if (!ep) { - ret = -EINVAL; - goto port_fail; - } - malidp->crtc.port = of_get_next_parent(ep); + malidp->crtc.port = of_graph_get_port_by_id(dev->of_node, 0); ret = component_bind_all(dev, drm); if (ret) { @@ -458,7 +452,6 @@ irq_init_fail: bind_fail: of_node_put(malidp->crtc.port); malidp->crtc.port = NULL; -port_fail: malidp_fini(drm); init_fail: drm->dev_private = NULL; @@ -516,29 +509,16 @@ static int malidp_compare_dev(struct device *dev, void *data) static int malidp_platform_probe(struct platform_device *pdev) { - struct device_node *port, *ep; + struct device_node *port; struct component_match *match = NULL; if (!pdev->dev.of_node) return -ENODEV; /* there is only one output port inside each device, find it */ - ep = of_graph_get_next_endpoint(pdev->dev.of_node, NULL); - if (!ep) - return -ENODEV; - - if (!of_device_is_available(ep)) { - of_node_put(ep); + port = of_graph_get_remote_node(pdev->dev.of_node, 0, 0); + if (!port) return -ENODEV; - } - - /* add the remote encoder port as component */ - port = of_graph_get_remote_port_parent(ep); - of_node_put(ep); - if (!port || !of_device_is_available(port)) { - of_node_put(port); - return -EAGAIN; - } drm_of_component_match_add(&pdev->dev, &match, malidp_compare_dev, port); -- cgit v1.2.3