linux/include/linux/video_output.h
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   1/*
   2 *
   3 *  Copyright (C) 2006 Luming Yu <luming.yu@intel.com>
   4 *
   5 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License as published by
   9 *  the Free Software Foundation; either version 2 of the License, or (at
  10 *  your option) any later version.
  11 *
  12 *  This program is distributed in the hope that it will be useful, but
  13 *  WITHOUT ANY WARRANTY; without even the implied warranty of
  14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 *  General Public License for more details.
  16 *
  17 *  You should have received a copy of the GNU General Public License along
  18 *  with this program; if not, write to the Free Software Foundation, Inc.,
  19 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  20 *
  21 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  22 */
  23#ifndef _LINUX_VIDEO_OUTPUT_H
  24#define _LINUX_VIDEO_OUTPUT_H
  25#include <linux/device.h>
  26#include <linux/err.h>
  27struct output_device;
  28struct output_properties {
  29        int (*set_state)(struct output_device *);
  30        int (*get_status)(struct output_device *);
  31};
  32struct output_device {
  33        int request_state;
  34        struct output_properties *props;
  35        struct device dev;
  36};
  37#define to_output_device(obj) container_of(obj, struct output_device, dev)
  38#if     defined(CONFIG_VIDEO_OUTPUT_CONTROL) || defined(CONFIG_VIDEO_OUTPUT_CONTROL_MODULE)
  39struct output_device *video_output_register(const char *name,
  40        struct device *dev,
  41        void *devdata,
  42        struct output_properties *op);
  43void video_output_unregister(struct output_device *dev);
  44#else
  45static struct output_device *video_output_register(const char *name,
  46        struct device *dev,
  47        void *devdata,
  48        struct output_properties *op)
  49{
  50        return ERR_PTR(-ENODEV);
  51}
  52static void video_output_unregister(struct output_device *dev)
  53{
  54        return;
  55}
  56#endif
  57#endif
  58
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