57 void drm_panel_init(struct drm_panel *panel, struct device *dev,  in drm_panel_init()  argument
60 	INIT_LIST_HEAD(&panel->list);  in drm_panel_init()
61 	INIT_LIST_HEAD(&panel->followers);  in drm_panel_init()
62 	mutex_init(&panel->follower_lock);  in drm_panel_init()
63 	panel->dev = dev;  in drm_panel_init()
64 	panel->funcs = funcs;  in drm_panel_init()
65 	panel->connector_type = connector_type;  in drm_panel_init()
76 void drm_panel_add(struct drm_panel *panel)  in drm_panel_add()  argument
79 	list_add_tail(&panel->list, &panel_list);  in drm_panel_add()
90 void drm_panel_remove(struct drm_panel *panel)  in drm_panel_remove()  argument
93 	list_del_init(&panel->list);  in drm_panel_remove()
108 int drm_panel_prepare(struct drm_panel *panel)  in drm_panel_prepare()  argument
113 	if (!panel)  in drm_panel_prepare()
116 	if (panel->prepared) {  in drm_panel_prepare()
117 		dev_warn(panel->dev, "Skipping prepare of already prepared panel\n");  in drm_panel_prepare()
121 	mutex_lock(&panel->follower_lock);  in drm_panel_prepare()
123 	if (panel->funcs && panel->funcs->prepare) {  in drm_panel_prepare()
124 		ret = panel->funcs->prepare(panel);  in drm_panel_prepare()
128 	panel->prepared = true;  in drm_panel_prepare()
130 	list_for_each_entry(follower, &panel->followers, list) {  in drm_panel_prepare()
133 			dev_info(panel->dev, "%ps failed: %d\n",  in drm_panel_prepare()
139 	mutex_unlock(&panel->follower_lock);  in drm_panel_prepare()
156 int drm_panel_unprepare(struct drm_panel *panel)  in drm_panel_unprepare()  argument
161 	if (!panel)  in drm_panel_unprepare()
164 	if (!panel->prepared) {  in drm_panel_unprepare()
165 		dev_warn(panel->dev, "Skipping unprepare of already unprepared panel\n");  in drm_panel_unprepare()
169 	mutex_lock(&panel->follower_lock);  in drm_panel_unprepare()
171 	list_for_each_entry(follower, &panel->followers, list) {  in drm_panel_unprepare()
174 			dev_info(panel->dev, "%ps failed: %d\n",  in drm_panel_unprepare()
178 	if (panel->funcs && panel->funcs->unprepare) {  in drm_panel_unprepare()
179 		ret = panel->funcs->unprepare(panel);  in drm_panel_unprepare()
183 	panel->prepared = false;  in drm_panel_unprepare()
187 	mutex_unlock(&panel->follower_lock);  in drm_panel_unprepare()
203 int drm_panel_enable(struct drm_panel *panel)  in drm_panel_enable()  argument
207 	if (!panel)  in drm_panel_enable()
210 	if (panel->enabled) {  in drm_panel_enable()
211 		dev_warn(panel->dev, "Skipping enable of already enabled panel\n");  in drm_panel_enable()
215 	if (panel->funcs && panel->funcs->enable) {  in drm_panel_enable()
216 		ret = panel->funcs->enable(panel);  in drm_panel_enable()
220 	panel->enabled = true;  in drm_panel_enable()
222 	ret = backlight_enable(panel->backlight);  in drm_panel_enable()
224 		DRM_DEV_INFO(panel->dev, "failed to enable backlight: %d\n",  in drm_panel_enable()
241 int drm_panel_disable(struct drm_panel *panel)  in drm_panel_disable()  argument
245 	if (!panel)  in drm_panel_disable()
248 	if (!panel->enabled) {  in drm_panel_disable()
249 		dev_warn(panel->dev, "Skipping disable of already disabled panel\n");  in drm_panel_disable()
253 	ret = backlight_disable(panel->backlight);  in drm_panel_disable()
255 		DRM_DEV_INFO(panel->dev, "failed to disable backlight: %d\n",  in drm_panel_disable()
258 	if (panel->funcs && panel->funcs->disable) {  in drm_panel_disable()
259 		ret = panel->funcs->disable(panel);  in drm_panel_disable()
263 	panel->enabled = false;  in drm_panel_disable()
280 int drm_panel_get_modes(struct drm_panel *panel,  in drm_panel_get_modes()  argument
283 	if (!panel)  in drm_panel_get_modes()
286 	if (panel->funcs && panel->funcs->get_modes)  in drm_panel_get_modes()
287 		return panel->funcs->get_modes(panel, connector);  in drm_panel_get_modes()
312 	struct drm_panel *panel;  in of_drm_find_panel()  local
319 	list_for_each_entry(panel, &panel_list, list) {  in of_drm_find_panel()
320 		if (panel->dev->of_node == np) {  in of_drm_find_panel()
322 			return panel;  in of_drm_find_panel()
421 	struct drm_panel *panel;  in drm_panel_add_follower()  local
428 	panel = of_drm_find_panel(panel_np);  in drm_panel_add_follower()
430 	if (IS_ERR(panel))  in drm_panel_add_follower()
431 		return PTR_ERR(panel);  in drm_panel_add_follower()
433 	get_device(panel->dev);  in drm_panel_add_follower()
434 	follower->panel = panel;  in drm_panel_add_follower()
436 	mutex_lock(&panel->follower_lock);  in drm_panel_add_follower()
438 	list_add_tail(&follower->list, &panel->followers);  in drm_panel_add_follower()
439 	if (panel->prepared) {  in drm_panel_add_follower()
442 			dev_info(panel->dev, "%ps failed: %d\n",  in drm_panel_add_follower()
446 	mutex_unlock(&panel->follower_lock);  in drm_panel_add_follower()
463 	struct drm_panel *panel = follower->panel;  in drm_panel_remove_follower()  local
466 	mutex_lock(&panel->follower_lock);  in drm_panel_remove_follower()
468 	if (panel->prepared) {  in drm_panel_remove_follower()
471 			dev_info(panel->dev, "%ps failed: %d\n",  in drm_panel_remove_follower()
476 	mutex_unlock(&panel->follower_lock);  in drm_panel_remove_follower()
478 	put_device(panel->dev);  in drm_panel_remove_follower()
531 int drm_panel_of_backlight(struct drm_panel *panel)  in drm_panel_of_backlight()  argument
535 	if (!panel || !panel->dev)  in drm_panel_of_backlight()
538 	backlight = devm_of_find_backlight(panel->dev);  in drm_panel_of_backlight()
543 	panel->backlight = backlight;  in drm_panel_of_backlight()