projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 53e269c1 LP |
1 | /* |
| 2 | * Media entity | |
| 3 | * | |
| 4 | * Copyright (C) 2010 Nokia Corporation | |
| 5 | * | |
| 6 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
| 7 | * Sakari Ailus <sakari.ailus@iki.fi> | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU General Public License | |
| 19 | * along with this program; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _MEDIA_ENTITY_H | |
| 24 | #define _MEDIA_ENTITY_H | |
| 25 | ||
| 26 | #include <linux/list.h> | |
| 27 | ||
| 28 | #define MEDIA_ENT_TYPE_SHIFT 16 | |
| 29 | #define MEDIA_ENT_TYPE_MASK 0x00ff0000 | |
| 30 | #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff | |
| 31 | ||
| 32 | #define MEDIA_ENT_T_DEVNODE (1 << MEDIA_ENT_TYPE_SHIFT) | |
| 33 | #define MEDIA_ENT_T_DEVNODE_V4L (MEDIA_ENT_T_DEVNODE + 1) | |
| 34 | #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) | |
| 35 | #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) | |
| 36 | #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) | |
| 37 | ||
| 38 | #define MEDIA_ENT_T_V4L2_SUBDEV (2 << MEDIA_ENT_TYPE_SHIFT) | |
| 39 | #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV + 1) | |
| 40 | #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV + 2) | |
| 41 | #define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV + 3) | |
| 42 | ||
| 43 | #define MEDIA_ENT_FL_DEFAULT (1 << 0) | |
| 44 | ||
| 45 | #define MEDIA_LNK_FL_ENABLED (1 << 0) | |
| 46 | #define MEDIA_LNK_FL_IMMUTABLE (1 << 1) | |
| 47 | ||
| 48 | #define MEDIA_PAD_FL_SINK (1 << 0) | |
| 49 | #define MEDIA_PAD_FL_SOURCE (1 << 1) | |
| 50 | ||
| 51 | struct media_link { | |
| 52 | struct media_pad *source; /* Source pad */ | |
| 53 | struct media_pad *sink; /* Sink pad */ | |
| 54 | struct media_link *reverse; /* Link in the reverse direction */ | |
| 55 | unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */ | |
| 56 | }; | |
| 57 | ||
| 58 | struct media_pad { | |
| 59 | struct media_entity *entity; /* Entity this pad belongs to */ | |
| 60 | u16 index; /* Pad index in the entity pads array */ | |
| 61 | unsigned long flags; /* Pad flags (MEDIA_PAD_FL_*) */ | |
| 62 | }; | |
| 63 | ||
| 64 | struct media_entity { | |
| 65 | struct list_head list; | |
| 66 | struct media_device *parent; /* Media device this entity belongs to*/ | |
| 67 | u32 id; /* Entity ID, unique in the parent media | |
| 68 | * device context */ | |
| 69 | const char *name; /* Entity name */ | |
| 70 | u32 type; /* Entity type (MEDIA_ENT_T_*) */ | |
| 71 | u32 revision; /* Entity revision, driver specific */ | |
| 72 | unsigned long flags; /* Entity flags (MEDIA_ENT_FL_*) */ | |
| 73 | u32 group_id; /* Entity group ID */ | |
| 74 | ||
| 75 | u16 num_pads; /* Number of sink and source pads */ | |
| 76 | u16 num_links; /* Number of existing links, both | |
| 77 | * enabled and disabled */ | |
| 78 | u16 num_backlinks; /* Number of backlinks */ | |
| 79 | u16 max_links; /* Maximum number of links */ | |
| 80 | ||
| 81 | struct media_pad *pads; /* Pads array (num_pads elements) */ | |
| 82 | struct media_link *links; /* Links array (max_links elements)*/ | |
| 83 | ||
| 84 | union { | |
| 85 | /* Node specifications */ | |
| 86 | struct { | |
| 87 | u32 major; | |
| 88 | u32 minor; | |
| 89 | } v4l; | |
| 90 | struct { | |
| 91 | u32 major; | |
| 92 | u32 minor; | |
| 93 | } fb; | |
| 94 | struct { | |
| 95 | u32 card; | |
| 96 | u32 device; | |
| 97 | u32 subdevice; | |
| 98 | } alsa; | |
| 99 | int dvb; | |
| 100 | ||
| 101 | /* Sub-device specifications */ | |
| 102 | /* Nothing needed yet */ | |
| 103 | }; | |
| 104 | }; | |
| 105 | ||
| 106 | static inline u32 media_entity_type(struct media_entity *entity) | |
| 107 | { | |
| 108 | return entity->type & MEDIA_ENT_TYPE_MASK; | |
| 109 | } | |
| 110 | ||
| 111 | static inline u32 media_entity_subtype(struct media_entity *entity) | |
| 112 | { | |
| 113 | return entity->type & MEDIA_ENT_SUBTYPE_MASK; | |
| 114 | } | |
| 115 | ||
| 116 | int media_entity_init(struct media_entity *entity, u16 num_pads, | |
| 117 | struct media_pad *pads, u16 extra_links); | |
| 118 | void media_entity_cleanup(struct media_entity *entity); | |
| 119 | int media_entity_create_link(struct media_entity *source, u16 source_pad, | |
| 120 | struct media_entity *sink, u16 sink_pad, u32 flags); | |
| 121 | ||
| 122 | #endif |