2 * Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
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:
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
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.
24 #include <linux/err.h>
25 #include <linux/module.h>
28 #include <drm/drm_crtc.h>
29 #include <drm/drm_panel.h>
31 static DEFINE_MUTEX(panel_lock
);
32 static LINUX_LIST_HEAD(panel_list
);
34 void drm_panel_init(struct drm_panel
*panel
)
36 INIT_LIST_HEAD(&panel
->list
);
38 EXPORT_SYMBOL(drm_panel_init
);
40 int drm_panel_add(struct drm_panel
*panel
)
42 mutex_lock(&panel_lock
);
43 list_add_tail(&panel
->list
, &panel_list
);
44 mutex_unlock(&panel_lock
);
48 EXPORT_SYMBOL(drm_panel_add
);
50 void drm_panel_remove(struct drm_panel
*panel
)
52 mutex_lock(&panel_lock
);
53 list_del_init(&panel
->list
);
54 mutex_unlock(&panel_lock
);
56 EXPORT_SYMBOL(drm_panel_remove
);
58 int drm_panel_attach(struct drm_panel
*panel
, struct drm_connector
*connector
)
63 panel
->connector
= connector
;
64 panel
->drm
= connector
->dev
;
68 EXPORT_SYMBOL(drm_panel_attach
);
70 int drm_panel_detach(struct drm_panel
*panel
)
72 panel
->connector
= NULL
;
77 EXPORT_SYMBOL(drm_panel_detach
);
80 struct drm_panel
*of_drm_find_panel(struct device_node
*np
)
82 struct drm_panel
*panel
;
84 mutex_lock(&panel_lock
);
86 list_for_each_entry(panel
, &panel_list
, list
) {
87 if (panel
->dev
->of_node
== np
) {
88 mutex_unlock(&panel_lock
);
93 mutex_unlock(&panel_lock
);
96 EXPORT_SYMBOL(of_drm_find_panel
);
99 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
100 MODULE_DESCRIPTION("DRM panel infrastructure");