1 // SPDX-License-Identifier: GPL-2.0-or-later
37 	return drm_bridge_attach(bridge->encoder, lvds_codec->panel_bridge,  in lvds_codec_attach()
46 	ret = regulator_enable(lvds_codec->vcc);  in lvds_codec_enable()
48 		dev_err(lvds_codec->dev,  in lvds_codec_enable()
53 	if (lvds_codec->powerdown_gpio)  in lvds_codec_enable()
54 		gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 0);  in lvds_codec_enable()
62 	if (lvds_codec->powerdown_gpio)  in lvds_codec_disable()
63 		gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 1);  in lvds_codec_disable()
65 	ret = regulator_disable(lvds_codec->vcc);  in lvds_codec_disable()
67 		dev_err(lvds_codec->dev,  in lvds_codec_disable()
79 	struct device *dev = &pdev->dev;  in lvds_codec_probe()
81 	struct drm_panel *panel;  in lvds_codec_probe()  local
87 		return -ENOMEM;  in lvds_codec_probe()
89 	lvds_codec->dev = &pdev->dev;  in lvds_codec_probe()
90 	lvds_codec->connector_type = (uintptr_t)of_device_get_match_data(dev);  in lvds_codec_probe()
92 	lvds_codec->vcc = devm_regulator_get(lvds_codec->dev, "power");  in lvds_codec_probe()
93 	if (IS_ERR(lvds_codec->vcc)) {  in lvds_codec_probe()
94 		ret = PTR_ERR(lvds_codec->vcc);  in lvds_codec_probe()
95 		if (ret != -EPROBE_DEFER)  in lvds_codec_probe()
96 			dev_err(lvds_codec->dev,  in lvds_codec_probe()
101 	lvds_codec->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",  in lvds_codec_probe()
103 	if (IS_ERR(lvds_codec->powerdown_gpio))  in lvds_codec_probe()
104 		return dev_err_probe(dev, PTR_ERR(lvds_codec->powerdown_gpio),  in lvds_codec_probe()
107 	/* Locate the panel DT node. */  in lvds_codec_probe()
108 	panel_node = of_graph_get_remote_node(dev->of_node, 1, 0);  in lvds_codec_probe()
110 		dev_dbg(dev, "panel DT node not found\n");  in lvds_codec_probe()
111 		return -ENXIO;  in lvds_codec_probe()
114 	panel = of_drm_find_panel(panel_node);  in lvds_codec_probe()
116 	if (IS_ERR(panel)) {  in lvds_codec_probe()
117 		dev_dbg(dev, "panel not found, deferring probe\n");  in lvds_codec_probe()
118 		return PTR_ERR(panel);  in lvds_codec_probe()
121 	lvds_codec->panel_bridge =  in lvds_codec_probe()
122 		devm_drm_panel_bridge_add_typed(dev, panel,  in lvds_codec_probe()
123 						lvds_codec->connector_type);  in lvds_codec_probe()
124 	if (IS_ERR(lvds_codec->panel_bridge))  in lvds_codec_probe()
125 		return PTR_ERR(lvds_codec->panel_bridge);  in lvds_codec_probe()
128 	 * The panel_bridge bridge is attached to the panel's of_node,  in lvds_codec_probe()
132 	lvds_codec->bridge.of_node = dev->of_node;  in lvds_codec_probe()
133 	lvds_codec->bridge.funcs = &funcs;  in lvds_codec_probe()
134 	drm_bridge_add(&lvds_codec->bridge);  in lvds_codec_probe()
145 	drm_bridge_remove(&lvds_codec->bridge);  in lvds_codec_remove()
152 		.compatible = "lvds-decoder",
156 		.compatible = "lvds-encoder",
171 		.name		= "lvds-codec",
178 MODULE_DESCRIPTION("LVDS encoders and decoders");