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