LXR linux/include/drm/drm_dp_aux

   1/*
   2 * Copyright © 2015 Intel Corporation
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice (including the next
  12 * paragraph) shall be included in all copies or substantial portions of the
  13 * Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21 * IN THE SOFTWARE.
  22 *
  23 * Authors:
  24 *    Rafael Antognolli <rafael.antognolli@intel.com>
  25 *
  26 */
  27
  28#ifndef DRM_DP_AUX_DEV
  29#define DRM_DP_AUX_DEV
  30
  31#include <drm/drm_dp_helper.h>
  32
  33#ifdef CONFIG_DRM_DP_AUX_CHARDEV
  34
  35int drm_dp_aux_dev_init(void);
  36void drm_dp_aux_dev_exit(void);
  37int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
  38void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
  39
  40#else
  41
  42static inline int drm_dp_aux_dev_init(void)
  43{
  44        return 0;
  45}
  46
  47static inline void drm_dp_aux_dev_exit(void)
  48{
  49}
  50
  51static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
  52{
  53        return 0;
  54}
  55
  56static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
  57{
  58}
  59
  60#endif
  61
  62#endif
  63