1 /*
2 * Copyright (C) 2006 James Simmons <jsimmons@infradead.org>
3 *
4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19 *
20 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
21 */
22
23 #ifndef _LINUX_DISPLAY_H
24 #define _LINUX_DISPLAY_H
25
26 #include <linux/device.h>
27
28 struct display_device;
29
30 /* This structure defines all the properties of a Display. */
31 struct display_driver {
32 int (*set_contrast)(struct display_device *, unsigned int);
33 int (*get_contrast)(struct display_device *);
34 void (*suspend)(struct display_device *, pm_message_t state);
35 void (*resume)(struct display_device *);
36 int (*probe)(struct display_device *, void *);
37 int (*remove)(struct display_device *);
38 int max_contrast;
39 };
40
41 struct display_device {
42 struct module *owner; /* Owner module */
43 struct display_driver *driver;
44 struct device *parent; /* This is the parent */
45 struct device *dev; /* This is this display device */
46 struct mutex lock;
47 void *priv_data;
48 char type[16];
49 char *name;
50 int idx;
51 };
52
53 extern struct display_device *display_device_register(struct display_driver *driver,
54 struct device *dev, void *devdata);
55 extern void display_device_unregister(struct display_device *dev);
56
57 extern int probe_edid(struct display_device *dev, void *devdata);
58
59 #define to_display_device(obj) container_of(obj, struct display_device, class_dev)
60
61 #endif
62
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