3  * Novatek NT39016 TFT LCD panel driver
69 static inline struct nt39016 *to_nt39016(struct drm_panel *panel)  in to_nt39016()  argument
71 	return container_of(panel, struct nt39016, drm_panel);  in to_nt39016()
124 	struct nt39016 *panel = to_nt39016(drm_panel);  in nt39016_prepare()  local
127 	err = regulator_enable(panel->supply);  in nt39016_prepare()
129 		dev_err(panel->dev, "Failed to enable power supply: %d", err);  in nt39016_prepare()
139 	gpiod_set_value_cansleep(panel->reset_gpio, 1);  in nt39016_prepare()
141 	gpiod_set_value_cansleep(panel->reset_gpio, 0);  in nt39016_prepare()
145 	err = regmap_multi_reg_write(panel->map, nt39016_panel_regs,  in nt39016_prepare()
148 		dev_err(panel->dev, "Failed to init registers: %d", err);  in nt39016_prepare()
155 	regulator_disable(panel->supply);  in nt39016_prepare()
161 	struct nt39016 *panel = to_nt39016(drm_panel);  in nt39016_unprepare()  local
163 	gpiod_set_value_cansleep(panel->reset_gpio, 1);  in nt39016_unprepare()
165 	regulator_disable(panel->supply);  in nt39016_unprepare()
172 	struct nt39016 *panel = to_nt39016(drm_panel);  in nt39016_enable()  local
175 	ret = regmap_write(panel->map, NT39016_REG_SYSTEM,  in nt39016_enable()
178 		dev_err(panel->dev, "Unable to enable panel: %d", ret);  in nt39016_enable()
182 	if (panel->backlight) {  in nt39016_enable()
186 		ret = backlight_enable(panel->backlight);  in nt39016_enable()
194 	struct nt39016 *panel = to_nt39016(drm_panel);  in nt39016_disable()  local
197 	backlight_disable(panel->backlight);  in nt39016_disable()
199 	err = regmap_write(panel->map, NT39016_REG_SYSTEM,  in nt39016_disable()
202 		dev_err(panel->dev, "Unable to disable panel: %d", err);  in nt39016_disable()
211 	struct nt39016 *panel = to_nt39016(drm_panel);  in nt39016_get_modes()  local
212 	const struct nt39016_panel_info *panel_info = panel->panel_info;  in nt39016_get_modes()
247 	struct nt39016 *panel;  in nt39016_probe()  local
250 	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);  in nt39016_probe()
251 	if (!panel)  in nt39016_probe()
254 	panel->dev = dev;  in nt39016_probe()
255 	spi_set_drvdata(spi, panel);  in nt39016_probe()
257 	panel->panel_info = of_device_get_match_data(dev);  in nt39016_probe()
258 	if (!panel->panel_info)  in nt39016_probe()
261 	panel->supply = devm_regulator_get(dev, "power");  in nt39016_probe()
262 	if (IS_ERR(panel->supply)) {  in nt39016_probe()
264 		return PTR_ERR(panel->supply);  in nt39016_probe()
267 	panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in nt39016_probe()
268 	if (IS_ERR(panel->reset_gpio)) {  in nt39016_probe()
270 		return PTR_ERR(panel->reset_gpio);  in nt39016_probe()
281 	panel->map = devm_regmap_init_spi(spi, &nt39016_regmap_config);  in nt39016_probe()
282 	if (IS_ERR(panel->map)) {  in nt39016_probe()
284 		return PTR_ERR(panel->map);  in nt39016_probe()
287 	panel->backlight = devm_of_find_backlight(dev);  in nt39016_probe()
288 	if (IS_ERR(panel->backlight)) {  in nt39016_probe()
289 		err = PTR_ERR(panel->backlight);  in nt39016_probe()
295 	drm_panel_init(&panel->drm_panel);  in nt39016_probe()
296 	panel->drm_panel.dev = dev;  in nt39016_probe()
297 	panel->drm_panel.funcs = &nt39016_funcs;  in nt39016_probe()
299 	err = drm_panel_add(&panel->drm_panel);  in nt39016_probe()
301 		dev_err(dev, "Failed to register panel");  in nt39016_probe()
310 	struct nt39016 *panel = spi_get_drvdata(spi);  in nt39016_remove()  local
312 	drm_panel_remove(&panel->drm_panel);  in nt39016_remove()
314 	nt39016_disable(&panel->drm_panel);  in nt39016_remove()
315 	nt39016_unprepare(&panel->drm_panel);  in nt39016_remove()