1 // SPDX-License-Identifier: GPL-2.0-or-later
27 	return drm_bridge_attach(bridge->encoder, lvds_encoder->panel_bridge,  in lvds_encoder_attach()
37 	if (lvds_encoder->powerdown_gpio)  in lvds_encoder_enable()
38 		gpiod_set_value_cansleep(lvds_encoder->powerdown_gpio, 0);  in lvds_encoder_enable()
47 	if (lvds_encoder->powerdown_gpio)  in lvds_encoder_disable()
48 		gpiod_set_value_cansleep(lvds_encoder->powerdown_gpio, 1);  in lvds_encoder_disable()
59 	struct device *dev = &pdev->dev;  in lvds_encoder_probe()
63 	struct drm_panel *panel;  in lvds_encoder_probe()  local
68 		return -ENOMEM;  in lvds_encoder_probe()
70 	lvds_encoder->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",  in lvds_encoder_probe()
72 	if (IS_ERR(lvds_encoder->powerdown_gpio)) {  in lvds_encoder_probe()
73 		int err = PTR_ERR(lvds_encoder->powerdown_gpio);  in lvds_encoder_probe()
75 		if (err != -EPROBE_DEFER)  in lvds_encoder_probe()
80 	/* Locate the panel DT node. */  in lvds_encoder_probe()
81 	port = of_graph_get_port_by_id(dev->of_node, 1);  in lvds_encoder_probe()
84 		return -ENXIO;  in lvds_encoder_probe()
91 		return -ENXIO;  in lvds_encoder_probe()
98 		return -ENXIO;  in lvds_encoder_probe()
101 	panel = of_drm_find_panel(panel_node);  in lvds_encoder_probe()
103 	if (IS_ERR(panel)) {  in lvds_encoder_probe()
104 		dev_dbg(dev, "panel not found, deferring probe\n");  in lvds_encoder_probe()
105 		return PTR_ERR(panel);  in lvds_encoder_probe()
108 	lvds_encoder->panel_bridge =  in lvds_encoder_probe()
109 		devm_drm_panel_bridge_add(dev, panel, DRM_MODE_CONNECTOR_LVDS);  in lvds_encoder_probe()
110 	if (IS_ERR(lvds_encoder->panel_bridge))  in lvds_encoder_probe()
111 		return PTR_ERR(lvds_encoder->panel_bridge);  in lvds_encoder_probe()
113 	/* The panel_bridge bridge is attached to the panel's of_node,  in lvds_encoder_probe()
117 	lvds_encoder->bridge.of_node = dev->of_node;  in lvds_encoder_probe()
118 	lvds_encoder->bridge.funcs = &funcs;  in lvds_encoder_probe()
119 	drm_bridge_add(&lvds_encoder->bridge);  in lvds_encoder_probe()
130 	drm_bridge_remove(&lvds_encoder->bridge);  in lvds_encoder_remove()
136 	{ .compatible = "lvds-encoder" },
146 		.name		= "lvds-encoder",
153 MODULE_DESCRIPTION("Transparent parallel to LVDS encoder");