drm/panel/panel-samsung-atna33xc20.c

5  * Panel driver for the Samsung ATNA33XC20 panel. This panel can't be handled
46 static inline struct atana33xc20_panel *to_atana33xc20(struct drm_panel *panel)
48 	return container_of(panel, struct atana33xc20_panel, base);
138 static int atana33xc20_disable(struct drm_panel *panel)
140 	struct atana33xc20_panel *p = to_atana33xc20(panel);
168 static int atana33xc20_enable(struct drm_panel *panel)
170 	struct atana33xc20_panel *p = to_atana33xc20(panel);
199 static int atana33xc20_unprepare(struct drm_panel *panel)
201 	struct atana33xc20_panel *p = to_atana33xc20(panel);
209 	 * Purposely do a put_sync, don't use autosuspend. The panel's tcon
214 	 * to get the EDID or otherwise send DP AUX commands to the panel.
216 	ret = pm_runtime_put_sync_suspend(panel->dev);
224 static int atana33xc20_prepare(struct drm_panel *panel)
226 	struct atana33xc20_panel *p = to_atana33xc20(panel);
233 	ret = pm_runtime_get_sync(panel->dev);
235 		pm_runtime_put_autosuspend(panel->dev);
243 static int atana33xc20_get_modes(struct drm_panel *panel,
246 	struct atana33xc20_panel *p = to_atana33xc20(panel);
247 	struct dp_aux_ep_device *aux_ep = to_dp_aux_ep_dev(panel->dev);
250 	pm_runtime_get_sync(panel->dev);
256 	pm_runtime_mark_last_busy(panel->dev);
257 	pm_runtime_put_autosuspend(panel->dev);
282 	struct atana33xc20_panel *panel;
286 	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
287 	if (!panel)
289 	dev_set_drvdata(dev, panel);
291 	panel->aux = aux_ep->aux;
293 	panel->supply = devm_regulator_get(dev, "power");
294 	if (IS_ERR(panel->supply))
295 		return dev_err_probe(dev, PTR_ERR(panel->supply),
298 	panel->el_on3_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
299 	if (IS_ERR(panel->el_on3_gpio))
300 		return dev_err_probe(dev, PTR_ERR(panel->el_on3_gpio),
303 	panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
304 	if (!panel->no_hpd) {
305 		panel->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
306 		if (IS_ERR(panel->hpd_gpio))
307 			return dev_err_probe(dev, PTR_ERR(panel->hpd_gpio),
321 	drm_panel_init(&panel->base, dev, &atana33xc20_funcs, DRM_MODE_CONNECTOR_eDP);
324 	ret = drm_panel_dp_aux_backlight(&panel->base, aux_ep->aux);
331 	drm_panel_add(&panel->base);
339 	struct atana33xc20_panel *panel = dev_get_drvdata(dev);
341 	drm_panel_remove(&panel->base);
342 	drm_panel_disable(&panel->base);
343 	drm_panel_unprepare(&panel->base);
345 	kfree(panel->edid);
351 	struct atana33xc20_panel *panel = dev_get_drvdata(dev);
353 	drm_panel_disable(&panel->base);
354 	drm_panel_unprepare(&panel->base);