1 // SPDX-License-Identifier: GPL-2.0+
12 #include <drm/bridge/aux-bridge.h>
25 	ida_free(&drm_aux_hpd_bridge_ida, adev->id);  in drm_aux_hpd_bridge_release()
27 	of_node_put(adev->dev.platform_data);  in drm_aux_hpd_bridge_release()
28 	of_node_put(adev->dev.of_node);  in drm_aux_hpd_bridge_release()
39  * devm_drm_dp_hpd_bridge_alloc - allocate a HPD DisplayPort bridge
56 		return ERR_PTR(-ENOMEM);  in devm_drm_dp_hpd_bridge_alloc()
64 	adev->id = ret;  in devm_drm_dp_hpd_bridge_alloc()
65 	adev->name = "dp_hpd_bridge";  in devm_drm_dp_hpd_bridge_alloc()
66 	adev->dev.parent = parent;  in devm_drm_dp_hpd_bridge_alloc()
67 	adev->dev.of_node = of_node_get(parent->of_node);  in devm_drm_dp_hpd_bridge_alloc()
68 	adev->dev.release = drm_aux_hpd_bridge_release;  in devm_drm_dp_hpd_bridge_alloc()
69 	adev->dev.platform_data = of_node_get(np);  in devm_drm_dp_hpd_bridge_alloc()
73 		of_node_put(adev->dev.platform_data);  in devm_drm_dp_hpd_bridge_alloc()
74 		of_node_put(adev->dev.of_node);  in devm_drm_dp_hpd_bridge_alloc()
75 		ida_free(&drm_aux_hpd_bridge_ida, adev->id);  in devm_drm_dp_hpd_bridge_alloc()
94  * devm_drm_dp_hpd_bridge_add - register a HDP DisplayPort bridge
113  * drm_dp_hpd_bridge_register - allocate and register a HDP DisplayPort bridge
132 	return &adev->dev;  in drm_dp_hpd_bridge_register()
137  * drm_aux_hpd_bridge_notify - notify hot plug detection events
141  * A wrapper around drm_bridge_hpd_notify() that is used to report hot plug
154 	drm_bridge_hpd_notify(&data->bridge, status);  in drm_aux_hpd_bridge_notify()
161 	return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL;  in drm_aux_hpd_bridge_attach()
173 	data = devm_kzalloc(&auxdev->dev, sizeof(*data), GFP_KERNEL);  in drm_aux_hpd_bridge_probe()
175 		return -ENOMEM;  in drm_aux_hpd_bridge_probe()
177 	data->dev = &auxdev->dev;  in drm_aux_hpd_bridge_probe()
178 	data->bridge.funcs = &drm_aux_hpd_bridge_funcs;  in drm_aux_hpd_bridge_probe()
179 	data->bridge.of_node = dev_get_platdata(data->dev);  in drm_aux_hpd_bridge_probe()
180 	data->bridge.ops = DRM_BRIDGE_OP_HPD;  in drm_aux_hpd_bridge_probe()
181 	data->bridge.type = id->driver_data;  in drm_aux_hpd_bridge_probe()
184 	data->bridge.interlace_allowed = true;  in drm_aux_hpd_bridge_probe()
185 	data->bridge.ycbcr_420_allowed = true;  in drm_aux_hpd_bridge_probe()
189 	return devm_drm_bridge_add(data->dev, &data->bridge);  in drm_aux_hpd_bridge_probe()