4  * Copyright (C) 2003,2004 Hewlett-Packard Company
24  * and if it is, we're switching lcd power as well ...
45 	if (!ld->ops)  in fb_notifier_callback()
48 	mutex_lock(&ld->ops_lock);  in fb_notifier_callback()
49 	if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) {  in fb_notifier_callback()
51 			if (ld->ops->set_power)  in fb_notifier_callback()
52 				ld->ops->set_power(ld, *(int *)evdata->data);  in fb_notifier_callback()
54 			if (ld->ops->early_set_power)  in fb_notifier_callback()
55 				ld->ops->early_set_power(ld,  in fb_notifier_callback()
56 						*(int *)evdata->data);  in fb_notifier_callback()
58 			if (ld->ops->r_early_set_power)  in fb_notifier_callback()
59 				ld->ops->r_early_set_power(ld,  in fb_notifier_callback()
60 						*(int *)evdata->data);  in fb_notifier_callback()
62 			if (ld->ops->set_mode)  in fb_notifier_callback()
63 				ld->ops->set_mode(ld, evdata->data);  in fb_notifier_callback()
66 	mutex_unlock(&ld->ops_lock);  in fb_notifier_callback()
72 	memset(&ld->fb_notif, 0, sizeof(ld->fb_notif));  in lcd_register_fb()
73 	ld->fb_notif.notifier_call = fb_notifier_callback;  in lcd_register_fb()
74 	return fb_register_client(&ld->fb_notif);  in lcd_register_fb()
79 	fb_unregister_client(&ld->fb_notif);  in lcd_unregister_fb()
98 	mutex_lock(&ld->ops_lock);  in lcd_power_show()
99 	if (ld->ops && ld->ops->get_power)  in lcd_power_show()
100 		rc = sprintf(buf, "%d\n", ld->ops->get_power(ld));  in lcd_power_show()
102 		rc = -ENXIO;  in lcd_power_show()
103 	mutex_unlock(&ld->ops_lock);  in lcd_power_show()
113 	unsigned long power;  in lcd_power_store()  local
115 	rc = kstrtoul(buf, 0, &power);  in lcd_power_store()
119 	rc = -ENXIO;  in lcd_power_store()
121 	mutex_lock(&ld->ops_lock);  in lcd_power_store()
122 	if (ld->ops && ld->ops->set_power) {  in lcd_power_store()
123 		pr_debug("set power to %lu\n", power);  in lcd_power_store()
124 		ld->ops->set_power(ld, power);  in lcd_power_store()
127 	mutex_unlock(&ld->ops_lock);  in lcd_power_store()
136 	int rc = -ENXIO;  in contrast_show()
139 	mutex_lock(&ld->ops_lock);  in contrast_show()
140 	if (ld->ops && ld->ops->get_contrast)  in contrast_show()
141 		rc = sprintf(buf, "%d\n", ld->ops->get_contrast(ld));  in contrast_show()
142 	mutex_unlock(&ld->ops_lock);  in contrast_show()
158 	rc = -ENXIO;  in contrast_store()
160 	mutex_lock(&ld->ops_lock);  in contrast_store()
161 	if (ld->ops && ld->ops->set_contrast) {  in contrast_store()
163 		ld->ops->set_contrast(ld, contrast);  in contrast_store()
166 	mutex_unlock(&ld->ops_lock);  in contrast_store()
177 	return sprintf(buf, "%d\n", ld->props.max_contrast);  in max_contrast_show()
198  * lcd_device_register - register a new object of lcd_device class.
218 		return ERR_PTR(-ENOMEM);  in lcd_device_register()
220 	mutex_init(&new_ld->ops_lock);  in lcd_device_register()
221 	mutex_init(&new_ld->update_lock);  in lcd_device_register()
223 	new_ld->dev.class = lcd_class;  in lcd_device_register()
224 	new_ld->dev.parent = parent;  in lcd_device_register()
225 	new_ld->dev.release = lcd_device_release;  in lcd_device_register()
226 	dev_set_name(&new_ld->dev, "%s", name);  in lcd_device_register()
227 	dev_set_drvdata(&new_ld->dev, devdata);  in lcd_device_register()
229 	new_ld->ops = ops;  in lcd_device_register()
231 	rc = device_register(&new_ld->dev);  in lcd_device_register()
233 		put_device(&new_ld->dev);  in lcd_device_register()
239 		device_unregister(&new_ld->dev);  in lcd_device_register()
248  * lcd_device_unregister - unregisters a object of lcd_device class.
258 	mutex_lock(&ld->ops_lock);  in lcd_device_unregister()
259 	ld->ops = NULL;  in lcd_device_unregister()
260 	mutex_unlock(&ld->ops_lock);  in lcd_device_unregister()
263 	device_unregister(&ld->dev);  in lcd_device_unregister()
282  * devm_lcd_device_register - resource managed lcd_device_register()
291  * Managed lcd_device_register(). The lcd_device returned from this function
303 		return ERR_PTR(-ENOMEM);  in devm_lcd_device_register()
318  * devm_lcd_device_unregister - resource managed lcd_device_unregister()
351 	lcd_class->dev_groups = lcd_device_groups;  in lcd_class_init()