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drm/rockchip: analogix_dp: make panel detect to an optional action

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Some boards don't need to declare a panel device node, like the
display interface is DP monitors, so it's necessary to make the
panel detect to an optional action.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Tomasz Figa <tomasz.figa@chromium.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
This commit is contained in:
Yakir Yang 2016-06-29 17:15:30 +08:00
parent 82872e42bb
commit eb87c91c73
1 changed files with 19 additions and 24 deletions
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43
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
View file

@ -329,38 +329,33 @@ static int rockchip_dp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *panel_node, *port, *endpoint;
struct drm_panel *panel = NULL;
struct rockchip_dp_device *dp;
struct drm_panel *panel;
port = of_graph_get_port_by_id(dev->of_node, 1);
if (!port) {
dev_err(dev, "can't find output port\n");
return -EINVAL;
}
if (port) {
endpoint = of_get_child_by_name(port, "endpoint");
of_node_put(port);
if (!endpoint) {
dev_err(dev, "no output endpoint found\n");
return -EINVAL;
}
endpoint = of_get_child_by_name(port, "endpoint");
of_node_put(port);
if (!endpoint) {
dev_err(dev, "no output endpoint found\n");
return -EINVAL;
}
panel_node = of_graph_get_remote_port_parent(endpoint);
of_node_put(endpoint);
if (!panel_node) {
dev_err(dev, "no output node found\n");
return -EINVAL;
}
panel_node = of_graph_get_remote_port_parent(endpoint);
of_node_put(endpoint);
if (!panel_node) {
dev_err(dev, "no output node found\n");
return -EINVAL;
}
panel = of_drm_find_panel(panel_node);
if (!panel) {
DRM_ERROR("failed to find panel\n");
panel = of_drm_find_panel(panel_node);
of_node_put(panel_node);
return -EPROBE_DEFER;
if (!panel) {
DRM_ERROR("failed to find panel\n");
return -EPROBE_DEFER;
}
}
of_node_put(panel_node);
dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
if (!dp)
return -ENOMEM;