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drm_panel.h revision 1.1.1.1 
      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
     83