/* * Multimedia device API * * Copyright (C) 2010 Nokia Corporation * * Contacts: Laurent Pinchart * Sakari Ailus * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef __LINUX_MEDIA_H #define __LINUX_MEDIA_H #include #include #include #define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0) struct media_device_info { char driver[16]; char model[32]; char serial[40]; char bus_info[32]; __u32 media_version; __u32 hw_revision; __u32 driver_version; __u32 reserved[31]; }; #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) /* * Base numbers for entity types * * Please notice that the huge gap of 16 bits for each base is overkill! * 8 bits is more than enough to avoid starving entity types for each * subsystem. * * However, It is kept this way just to avoid binary breakages with the * namespace provided on legacy versions of this header. */ #define MEDIA_ENT_T_DVB_BASE 0x00000000 #define MEDIA_ENT_T_V4L2_BASE 0x00010000 #define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000 /* * V4L2 entities - Those are used for DMA (mmap/DMABUF) and * read()/write() data I/O associated with the V4L2 devnodes. */ #define MEDIA_ENT_T_V4L2_VIDEO (MEDIA_ENT_T_V4L2_BASE + 1) /* * Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and * MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used * to be declared for FB, ALSA and DVB entities. * As those values were never actually used in practice, we're just * adding them as backward compatibility macros and keeping the * numberspace clean here. This way, we avoid breaking compilation, * in the case of having some userspace application using the old * symbols. */ #define MEDIA_ENT_T_V4L2_VBI (MEDIA_ENT_T_V4L2_BASE + 5) #define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6) /* V4L2 Sub-device entities */ #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1) #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2) #define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3) /* A converter of analogue video to its digital representation. */ #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4) /* Tuner entity is actually both V4L2 and DVB subdev */ #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5) /* DVB entities */ #define MEDIA_ENT_T_DVB_DEMOD (MEDIA_ENT_T_DVB_BASE + 1) #define MEDIA_ENT_T_DVB_DEMUX (MEDIA_ENT_T_DVB_BASE + 2) #define MEDIA_ENT_T_DVB_TSOUT (MEDIA_ENT_T_DVB_BASE + 3) #define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4) #define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5) /* Legacy symbols used to avoid userspace compilation breakages */ #define MEDIA_ENT_TYPE_SHIFT 16 #define MEDIA_ENT_TYPE_MASK 0x00ff0000 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_T_V4L2_BASE #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_T_V4L2_SUBDEV_BASE #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_T_V4L2_VIDEO #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) /* Entity types */ #define MEDIA_ENT_FL_DEFAULT (1 << 0) struct media_entity_desc { __u32 id; char name[32]; __u32 type; __u32 revision; __u32 flags; __u32 group_id; __u16 pads; __u16 links; __u32 reserved[4]; union { /* Node specifications */ struct { __u32 major; __u32 minor; } dev; #if 1 /* * TODO: this shouldn't have been added without * actual drivers that use this. When the first real driver * appears that sets this information, special attention * should be given whether this information is 1) enough, and * 2) can deal with udev rules that rename devices. The struct * dev would not be sufficient for this since that does not * contain the subdevice information. In addition, struct dev * can only refer to a single device, and not to multiple (e.g. * pcm and mixer devices). * * So for now mark this as a to do. */ struct { __u32 card; __u32 device; __u32 subdevice; } alsa; #endif #if 1 /* * DEPRECATED: previous node specifications. Kept just to * avoid breaking compilation, but media_entity_desc.dev * should be used instead. In particular, alsa and dvb * fields below are wrong: for all devnodes, there should * be just major/minor inside the struct, as this is enough * to represent any devnode, no matter what type. */ struct { __u32 major; __u32 minor; } v4l; struct { __u32 major; __u32 minor; } fb; int dvb; #endif /* Sub-device specifications */ /* Nothing needed yet */ __u8 raw[184]; }; }; #define MEDIA_PAD_FL_SINK (1 << 0) #define MEDIA_PAD_FL_SOURCE (1 << 1) #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2) struct media_pad_desc { __u32 entity; /* entity ID */ __u16 index; /* pad index */ __u32 flags; /* pad flags */ __u32 reserved[2]; }; #define MEDIA_LNK_FL_ENABLED (1 << 0) #define MEDIA_LNK_FL_IMMUTABLE (1 << 1) #define MEDIA_LNK_FL_DYNAMIC (1 << 2) struct media_link_desc { struct media_pad_desc source; struct media_pad_desc sink; __u32 flags; __u32 reserved[2]; }; struct media_links_enum { __u32 entity; /* Should have enough room for pads elements */ struct media_pad_desc __user *pads; /* Should have enough room for links elements */ struct media_link_desc __user *links; __u32 reserved[4]; }; /* Interface type ranges */ #define MEDIA_INTF_T_DVB_BASE 0x00000100 #define MEDIA_INTF_T_V4L_BASE 0x00000200 /* Interface types */ #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE) #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1) #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2) #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3) #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4) #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE) #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1) #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2) #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3) #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4) /* TBD: declare the structs needed for the new G_TOPOLOGY ioctl */ #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc) #endif /* __LINUX_MEDIA_H */