TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm: bridge: dw_hdmi: Switch to of_graph_get_remote_node()

Browse Source 
To reduce boilerplate, use of_graph_get_remote_node() helper instead of
the hand-rolling code.

Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240316170513.1159724-1-sui.jingfeng@linux.dev
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240316170513.1159724-1-sui.jingfeng@linux.dev
This commit is contained in:
Sui Jingfeng
2024-03-17 01:05:13 +08:00
committed by Neil Armstrong
parent ba2d3e6709
commit d576e5e235
1 changed files with 4 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+4 -27
View File
@@ -3291,40 +3291,17 @@ static void dw_hdmi_init_hw(struct dw_hdmi *hdmi)
static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
{
struct device_node *endpoint;
struct device_node *remote;
if (!hdmi->plat_data->output_port)
return 0;
endpoint = of_graph_get_endpoint_by_regs(hdmi->dev->of_node,
hdmi->plat_data->output_port,
-1);
if (!endpoint) {
/*
* On platforms whose bindings don't make the output port
* mandatory (such as Rockchip) the plat_data->output_port
* field isn't set, so it's safe to make this a fatal error.
*/
dev_err(hdmi->dev, "Missing endpoint in port@%u\n",
hdmi->plat_data->output_port);
return -ENODEV;
}
remote = of_graph_get_remote_port_parent(endpoint);
of_node_put(endpoint);
if (!remote) {
dev_err(hdmi->dev, "Endpoint in port@%u unconnected\n",
hdmi->plat_data->output_port);
remote = of_graph_get_remote_node(hdmi->dev->of_node,
hdmi->plat_data->output_port,
-1);
if (!remote)
return -ENODEV;
}
if (!of_device_is_available(remote)) {
dev_err(hdmi->dev, "port@%u remote device is disabled\n",
hdmi->plat_data->output_port);
of_node_put(remote);
return -ENODEV;
}
hdmi->next_bridge = of_drm_find_bridge(remote);
of_node_put(remote);