0,0 → 1,100 |
/* |
* Copyright (C) 2013, NVIDIA Corporation. All rights reserved. |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the "Software"), |
* to deal in the Software without restriction, including without limitation |
* the rights to use, copy, modify, merge, publish, distribute, sub license, |
* and/or sell copies of the Software, and to permit persons to whom the |
* Software is furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice (including the |
* next paragraph) shall be included in all copies or substantial portions |
* of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
* DEALINGS IN THE SOFTWARE. |
*/ |
|
#include <linux/err.h> |
#include <linux/module.h> |
|
#include <drm/drm_crtc.h> |
#include <drm/drm_panel.h> |
|
static DEFINE_MUTEX(panel_lock); |
static LIST_HEAD(panel_list); |
|
void drm_panel_init(struct drm_panel *panel) |
{ |
INIT_LIST_HEAD(&panel->list); |
} |
EXPORT_SYMBOL(drm_panel_init); |
|
int drm_panel_add(struct drm_panel *panel) |
{ |
mutex_lock(&panel_lock); |
list_add_tail(&panel->list, &panel_list); |
mutex_unlock(&panel_lock); |
|
return 0; |
} |
EXPORT_SYMBOL(drm_panel_add); |
|
void drm_panel_remove(struct drm_panel *panel) |
{ |
mutex_lock(&panel_lock); |
list_del_init(&panel->list); |
mutex_unlock(&panel_lock); |
} |
EXPORT_SYMBOL(drm_panel_remove); |
|
int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector) |
{ |
if (panel->connector) |
return -EBUSY; |
|
panel->connector = connector; |
panel->drm = connector->dev; |
|
return 0; |
} |
EXPORT_SYMBOL(drm_panel_attach); |
|
int drm_panel_detach(struct drm_panel *panel) |
{ |
panel->connector = NULL; |
panel->drm = NULL; |
|
return 0; |
} |
EXPORT_SYMBOL(drm_panel_detach); |
|
#ifdef CONFIG_OF |
struct drm_panel *of_drm_find_panel(struct device_node *np) |
{ |
struct drm_panel *panel; |
|
mutex_lock(&panel_lock); |
|
list_for_each_entry(panel, &panel_list, list) { |
if (panel->dev->of_node == np) { |
mutex_unlock(&panel_lock); |
return panel; |
} |
} |
|
mutex_unlock(&panel_lock); |
return NULL; |
} |
EXPORT_SYMBOL(of_drm_find_panel); |
#endif |
|
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); |
MODULE_DESCRIPTION("DRM panel infrastructure"); |
MODULE_LICENSE("GPL and additional rights"); |