LXR linux/include/linux/display.h

   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
  28struct display_device;
  29
  30/* This structure defines all the properties of a Display. */
  31struct 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
  41struct 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
  53extern struct display_device *display_device_register(struct display_driver *driver,
  54                                        struct device *dev, void *devdata);
  55extern void display_device_unregister(struct display_device *dev);
  56
  57extern 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