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
29struct drm_connector;
30struct drm_device;
31struct drm_panel;
32
33struct 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
39struct 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
49static 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
57static 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
65void drm_panel_init(struct drm_panel *panel);
66
67int drm_panel_add(struct drm_panel *panel);
68void drm_panel_remove(struct drm_panel *panel);
69
70int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector);
71int drm_panel_detach(struct drm_panel *panel);
72
73#ifdef CONFIG_OF
74struct drm_panel *of_drm_find_panel(struct device_node *np);
75#else
76static inline struct drm_panel *of_drm_find_panel(struct device_node *np)
77{
78	return NULL;
79}
80#endif
81
82#endif