3  * Generic LVDS panel driver
51 	struct panel_lvds *lvds = to_panel_lvds(panel);  in panel_lvds_unprepare()  local
53 	if (lvds->enable_gpio)  in panel_lvds_unprepare()
54 		gpiod_set_value_cansleep(lvds->enable_gpio, 0);  in panel_lvds_unprepare()
56 	if (lvds->supply)  in panel_lvds_unprepare()
57 		regulator_disable(lvds->supply);  in panel_lvds_unprepare()
64 	struct panel_lvds *lvds = to_panel_lvds(panel);  in panel_lvds_prepare()  local
66 	if (lvds->supply) {  in panel_lvds_prepare()
69 		err = regulator_enable(lvds->supply);  in panel_lvds_prepare()
71 			dev_err(lvds->dev, "failed to enable supply: %d\n",  in panel_lvds_prepare()
77 	if (lvds->enable_gpio)  in panel_lvds_prepare()
78 		gpiod_set_value_cansleep(lvds->enable_gpio, 1);  in panel_lvds_prepare()
86 	struct panel_lvds *lvds = to_panel_lvds(panel);  in panel_lvds_get_modes()  local
93 	drm_display_mode_from_videomode(&lvds->video_mode, mode);  in panel_lvds_get_modes()
97 	connector->display_info.width_mm = lvds->width;  in panel_lvds_get_modes()
98 	connector->display_info.height_mm = lvds->height;  in panel_lvds_get_modes()
100 					 &lvds->bus_format, 1);  in panel_lvds_get_modes()
101 	connector->display_info.bus_flags = lvds->data_mirror  in panel_lvds_get_modes()
104 	drm_connector_set_panel_orientation(connector, lvds->orientation);  in panel_lvds_get_modes()
115 static int panel_lvds_parse_dt(struct panel_lvds *lvds)  in panel_lvds_parse_dt()  argument
117 	struct device_node *np = lvds->dev->of_node;  in panel_lvds_parse_dt()
122 	ret = of_drm_get_panel_orientation(np, &lvds->orientation);  in panel_lvds_parse_dt()
124 		dev_err(lvds->dev, "%pOF: failed to get orientation %d\n", np, ret);  in panel_lvds_parse_dt()
130 		dev_err(lvds->dev, "%pOF: problems parsing panel-timing (%d)\n",  in panel_lvds_parse_dt()
135 	videomode_from_timing(&timing, &lvds->video_mode);  in panel_lvds_parse_dt()
137 	ret = of_property_read_u32(np, "width-mm", &lvds->width);  in panel_lvds_parse_dt()
139 		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",  in panel_lvds_parse_dt()
143 	ret = of_property_read_u32(np, "height-mm", &lvds->height);  in panel_lvds_parse_dt()
145 		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",  in panel_lvds_parse_dt()
150 	of_property_read_string(np, "label", &lvds->label);  in panel_lvds_parse_dt()
154 		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",  in panel_lvds_parse_dt()
160 		lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG;  in panel_lvds_parse_dt()
162 		lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA;  in panel_lvds_parse_dt()
164 		lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG;  in panel_lvds_parse_dt()
166 		dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n",  in panel_lvds_parse_dt()
171 	lvds->data_mirror = of_property_read_bool(np, "data-mirror");  in panel_lvds_parse_dt()
178 	struct panel_lvds *lvds;  in panel_lvds_probe()  local
181 	lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);  in panel_lvds_probe()
182 	if (!lvds)  in panel_lvds_probe()
185 	lvds->dev = &pdev->dev;  in panel_lvds_probe()
187 	ret = panel_lvds_parse_dt(lvds);  in panel_lvds_probe()
191 	lvds->supply = devm_regulator_get_optional(lvds->dev, "power");  in panel_lvds_probe()
192 	if (IS_ERR(lvds->supply)) {  in panel_lvds_probe()
193 		ret = PTR_ERR(lvds->supply);  in panel_lvds_probe()
197 				dev_err(lvds->dev, "failed to request regulator: %d\n",  in panel_lvds_probe()
202 		lvds->supply = NULL;  in panel_lvds_probe()
206 	lvds->enable_gpio = devm_gpiod_get_optional(lvds->dev, "enable",  in panel_lvds_probe()
208 	if (IS_ERR(lvds->enable_gpio)) {  in panel_lvds_probe()
209 		ret = PTR_ERR(lvds->enable_gpio);  in panel_lvds_probe()
210 		dev_err(lvds->dev, "failed to request %s GPIO: %d\n",  in panel_lvds_probe()
215 	lvds->reset_gpio = devm_gpiod_get_optional(lvds->dev, "reset",  in panel_lvds_probe()
217 	if (IS_ERR(lvds->reset_gpio)) {  in panel_lvds_probe()
218 		ret = PTR_ERR(lvds->reset_gpio);  in panel_lvds_probe()
219 		dev_err(lvds->dev, "failed to request %s GPIO: %d\n",  in panel_lvds_probe()
226 	 * way for panels that don't care about power supply ordering. LVDS  in panel_lvds_probe()
232 	drm_panel_init(&lvds->panel, lvds->dev, &panel_lvds_funcs,  in panel_lvds_probe()
235 	ret = drm_panel_of_backlight(&lvds->panel);  in panel_lvds_probe()
239 	drm_panel_add(&lvds->panel);  in panel_lvds_probe()
241 	dev_set_drvdata(lvds->dev, lvds);  in panel_lvds_probe()
247 	struct panel_lvds *lvds = dev_get_drvdata(&pdev->dev);  in panel_lvds_remove()  local
249 	drm_panel_remove(&lvds->panel);  in panel_lvds_remove()
251 	drm_panel_disable(&lvds->panel);  in panel_lvds_remove()
257 	{ .compatible = "panel-lvds", },
267 		.name	= "panel-lvds",
275 MODULE_DESCRIPTION("LVDS Panel Driver");