2  * Copyright (C) 2015-2016 Free Electrons
3  * Copyright (C) 2015-2016 NextThing Co
5  * Maxime Ripard <maxime.ripard@free-electrons.com>
25 	struct drm_connector	connector;  member
38 drm_connector_to_dumb_vga(struct drm_connector *connector)  in drm_connector_to_dumb_vga()  argument
40 	return container_of(connector, struct dumb_vga, connector);  in drm_connector_to_dumb_vga()
43 static int dumb_vga_get_modes(struct drm_connector *connector)  in dumb_vga_get_modes()  argument
45 	struct dumb_vga *vga = drm_connector_to_dumb_vga(connector);  in dumb_vga_get_modes()  local
49 	if (IS_ERR(vga->ddc))  in dumb_vga_get_modes()
52 	edid = drm_get_edid(connector, vga->ddc);  in dumb_vga_get_modes()
58 	drm_connector_update_edid_property(connector, edid);  in dumb_vga_get_modes()
59 	ret = drm_add_edid_modes(connector, edid);  in dumb_vga_get_modes()
68 	ret = drm_add_modes_noedid(connector, 1920, 1200);  in dumb_vga_get_modes()
71 	drm_set_preferred_mode(connector, 1024, 768);  in dumb_vga_get_modes()
81 dumb_vga_connector_detect(struct drm_connector *connector, bool force)  in dumb_vga_connector_detect()  argument
83 	struct dumb_vga *vga = drm_connector_to_dumb_vga(connector);  in dumb_vga_connector_detect()  local
91 	if (!IS_ERR(vga->ddc) && drm_probe_ddc(vga->ddc))  in dumb_vga_connector_detect()
108 	struct dumb_vga *vga = drm_bridge_to_dumb_vga(bridge);  in dumb_vga_attach()  local
111 	if (!bridge->encoder) {  in dumb_vga_attach()
113 		return -ENODEV;  in dumb_vga_attach()
116 	drm_connector_helper_add(&vga->connector,  in dumb_vga_attach()
118 	ret = drm_connector_init(bridge->dev, &vga->connector,  in dumb_vga_attach()
121 		DRM_ERROR("Failed to initialize connector\n");  in dumb_vga_attach()
125 	drm_connector_attach_encoder(&vga->connector,  in dumb_vga_attach()
126 					  bridge->encoder);  in dumb_vga_attach()
133 	struct dumb_vga *vga = drm_bridge_to_dumb_vga(bridge);  in dumb_vga_enable()  local
136 	if (vga->vdd)  in dumb_vga_enable()
137 		ret = regulator_enable(vga->vdd);  in dumb_vga_enable()
145 	struct dumb_vga *vga = drm_bridge_to_dumb_vga(bridge);  in dumb_vga_disable()  local
147 	if (vga->vdd)  in dumb_vga_disable()
148 		regulator_disable(vga->vdd);  in dumb_vga_disable()
162 	remote = of_graph_get_remote_node(dev->of_node, 1, -1);  in dumb_vga_retrieve_ddc()
164 		return ERR_PTR(-EINVAL);  in dumb_vga_retrieve_ddc()
166 	phandle = of_parse_phandle(remote, "ddc-i2c-bus", 0);  in dumb_vga_retrieve_ddc()
169 		return ERR_PTR(-ENODEV);  in dumb_vga_retrieve_ddc()
174 		return ERR_PTR(-EPROBE_DEFER);  in dumb_vga_retrieve_ddc()
181 	struct dumb_vga *vga;  in dumb_vga_probe()  local
183 	vga = devm_kzalloc(&pdev->dev, sizeof(*vga), GFP_KERNEL);  in dumb_vga_probe()
184 	if (!vga)  in dumb_vga_probe()
185 		return -ENOMEM;  in dumb_vga_probe()
186 	platform_set_drvdata(pdev, vga);  in dumb_vga_probe()
188 	vga->vdd = devm_regulator_get_optional(&pdev->dev, "vdd");  in dumb_vga_probe()
189 	if (IS_ERR(vga->vdd)) {  in dumb_vga_probe()
190 		int ret = PTR_ERR(vga->vdd);  in dumb_vga_probe()
191 		if (ret == -EPROBE_DEFER)  in dumb_vga_probe()
192 			return -EPROBE_DEFER;  in dumb_vga_probe()
193 		vga->vdd = NULL;  in dumb_vga_probe()
194 		dev_dbg(&pdev->dev, "No vdd regulator found: %d\n", ret);  in dumb_vga_probe()
197 	vga->ddc = dumb_vga_retrieve_ddc(&pdev->dev);  in dumb_vga_probe()
198 	if (IS_ERR(vga->ddc)) {  in dumb_vga_probe()
199 		if (PTR_ERR(vga->ddc) == -ENODEV) {  in dumb_vga_probe()
200 			dev_dbg(&pdev->dev,  in dumb_vga_probe()
203 			dev_err(&pdev->dev, "Couldn't retrieve i2c bus\n");  in dumb_vga_probe()
204 			return PTR_ERR(vga->ddc);  in dumb_vga_probe()
208 	vga->bridge.funcs = &dumb_vga_bridge_funcs;  in dumb_vga_probe()
209 	vga->bridge.of_node = pdev->dev.of_node;  in dumb_vga_probe()
210 	vga->bridge.timings = of_device_get_match_data(&pdev->dev);  in dumb_vga_probe()
212 	drm_bridge_add(&vga->bridge);  in dumb_vga_probe()
219 	struct dumb_vga *vga = platform_get_drvdata(pdev);  in dumb_vga_remove()  local
221 	drm_bridge_remove(&vga->bridge);  in dumb_vga_remove()
223 	if (!IS_ERR(vga->ddc))  in dumb_vga_remove()
224 		i2c_put_adapter(vga->ddc);  in dumb_vga_remove()
269 		.compatible = "dumb-vga-dac",
292 		.name		= "dumb-vga-dac",
298 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
299 MODULE_DESCRIPTION("Dumb VGA DAC bridge driver");