include/drm/drm_panel.h

   1 /*
   2  * Copyright (C) 2013, NVIDIA Corporation.  All rights reserved.
   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, sub license,
   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
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 NON-INFRINGEMENT. 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef __DRM_PANEL_H__
  25 #define __DRM_PANEL_H__
  26
  27 #include <linux/list.h>
  28
  29 struct drm_connector;
  30 struct drm_device;
  31 struct drm_panel;
  32
  33 struct drm_panel_funcs {
  34         int (*disable)(struct drm_panel *panel);
  35         int (*enable)(struct drm_panel *panel);
  36         int (*get_modes)(struct drm_panel *panel);
  37 };
  38
  39 struct drm_panel {
  40         struct drm_device *drm;
  41         struct drm_connector *connector;
  42         struct device *dev;
  43
  44         const struct drm_panel_funcs *funcs;
  45
  46         struct list_head list;
  47 };
  48
  49 static inline int drm_panel_disable(struct drm_panel *panel)
  50 {
  51         if (panel && panel->funcs && panel->funcs->disable)
  52                 return panel->funcs->disable(panel);
  53
  54         return panel ? -ENOSYS : -EINVAL;
  55 }
  56
  57 static inline int drm_panel_enable(struct drm_panel *panel)
  58 {
  59         if (panel && panel->funcs && panel->funcs->enable)
  60                 return panel->funcs->enable(panel);
  61
  62         return panel ? -ENOSYS : -EINVAL;
  63 }
  64
  65 void drm_panel_init(struct drm_panel *panel);
  66
  67 int drm_panel_add(struct drm_panel *panel);
  68 void drm_panel_remove(struct drm_panel *panel);
  69
  70 int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector);
  71 int drm_panel_detach(struct drm_panel *panel);
  72
  73 #ifdef CONFIG_OF
  74 struct drm_panel *of_drm_find_panel(struct device_node *np);
  75 #else
  76 static inline struct drm_panel *of_drm_find_panel(struct device_node *np)
  77 {
  78         return NULL;
  79 }
  80 #endif
  81
  82 #endif