This patch depends on the OF graph parsing helper and imx-drm-dt series. It allows to connect the panel to the output port (port@1 on i.MX53, port@4 on i.MX6) via the OF graph bindings.
Signed-off-by: Philipp Zabel p.zabel@pengutronix.de --- drivers/staging/imx-drm/imx-ldb.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/imx-drm/imx-ldb.c b/drivers/staging/imx-drm/imx-ldb.c index 38a0795..4d1446a 100644 --- a/drivers/staging/imx-drm/imx-ldb.c +++ b/drivers/staging/imx-drm/imx-ldb.c @@ -27,8 +27,8 @@ #include <drm/drm_panel.h> #include <linux/mfd/syscon.h> #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> -#include <linux/of_address.h> #include <linux/of_device.h> +#include <linux/of_graph.h> #include <video/of_videomode.h> #include <linux/regmap.h> #include <linux/videodev2.h> @@ -506,7 +506,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
for_each_child_of_node(np, child) { struct imx_ldb_channel *channel; - struct device_node *panel_node; + struct device_node *port;
ret = of_property_read_u32(child, "reg", &i); if (ret || i < 0 || i > 1) @@ -566,9 +566,18 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data) return -EINVAL; }
- panel_node = of_parse_phandle(child, "fsl,panel", 0); - if (panel_node) - channel->panel = of_drm_find_panel(panel_node); + /* The output port is port@4 with mux or port@1 without mux */ + port = of_graph_get_port_by_id(child, imx_ldb->lvds_mux ? 4 : 1); + if (port) { + struct device_node *endpoint, *remote; + + endpoint = of_get_child_by_name(port, "endpoint"); + if (endpoint) { + remote = of_graph_get_remote_port_parent(endpoint); + if (remote) + channel->panel = of_drm_find_panel(remote); + } + }
ret = imx_ldb_register(drm, channel); if (ret)