2 * Multimedia device API
4 * Copyright (C) 2010 Nokia Corporation
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.
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.
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
23 #ifndef __LINUX_MEDIA_H
24 #define __LINUX_MEDIA_H
29 #include <linux/ioctl.h>
30 #include <linux/types.h>
31 #include <linux/version.h>
33 #define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0)
35 struct media_device_info {
46 #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31)
49 * Initial value to be used when a new entity is created
50 * Drivers should change it to something useful
52 #define MEDIA_ENT_F_UNKNOWN 0x00000000
55 * Base number ranges for entity functions
57 * NOTE: those ranges and entity function number are phased just to
58 * make it easier to maintain this file. Userspace should not rely on
59 * the ranges to identify a group of function types, as newer
60 * functions can be added with any name within the full u32 range.
62 #define MEDIA_ENT_F_BASE 0x00000000
63 #define MEDIA_ENT_F_OLD_BASE 0x00010000
64 #define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000
69 #define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 0x00001)
70 #define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 0x00002)
71 #define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 0x00003)
72 #define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 0x00004)
77 #define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 0x01001)
78 #define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 0x01002)
79 #define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 0x01003)
82 * Analog TV IF-PLL decoders
84 * It is a responsibility of the master/bridge drivers to create links
85 * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER.
87 #define MEDIA_ENT_F_IF_VID_DECODER (MEDIA_ENT_F_BASE + 2001)
88 #define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 2002)
93 /* It is a responsibility of the entity drivers to add connectors and links */
96 * For now, it should not be used in userspace, as some
97 * definitions may change
100 #define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 0x30001)
101 #define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 0x30002)
102 #define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 0x30003)
107 * Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and
108 * MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility
109 * with the legacy v1 API.The number range is out of range by purpose:
110 * several previously reserved numbers got excluded from this range.
112 * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
113 * in order to preserve backward compatibility.
114 * Drivers must change to the proper subdev type before
115 * registering the entity.
118 #define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1)
120 #define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
121 #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
122 #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
123 #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
125 * It is a responsibility of the master/bridge drivers to add connectors
126 * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
127 * may require the usage of separate I2C chips to decode analog TV signals,
128 * when the master/bridge chipset doesn't have its own TV standard decoder.
129 * On such cases, the IF-PLL staging is mapped via one or two entities:
130 * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
132 #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
134 #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE
136 #if !defined(__KERNEL__) || defined(__NEED_MEDIA_LEGACY_API)
139 * Legacy symbols used to avoid userspace compilation breakages
141 * Those symbols map the entity function into types and should be
142 * used only on legacy programs for legacy hardware. Don't rely
143 * on those for MEDIA_IOC_G_TOPOLOGY.
145 #define MEDIA_ENT_TYPE_SHIFT 16
146 #define MEDIA_ENT_TYPE_MASK 0x00ff0000
147 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
149 /* End of the old subdev reserved numberspace */
150 #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_T_DEVNODE | \
151 MEDIA_ENT_SUBTYPE_MASK)
153 #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE
154 #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L
155 #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2)
156 #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3)
157 #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4)
159 #define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN
160 #define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L
161 #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
162 #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR
163 #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH
164 #define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS
165 #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER
166 #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER
170 #define MEDIA_ENT_FL_DEFAULT (1 << 0)
171 #define MEDIA_ENT_FL_CONNECTOR (1 << 1)
173 struct media_entity_desc {
186 /* Node specifications */
194 * TODO: this shouldn't have been added without
195 * actual drivers that use this. When the first real driver
196 * appears that sets this information, special attention
197 * should be given whether this information is 1) enough, and
198 * 2) can deal with udev rules that rename devices. The struct
199 * dev would not be sufficient for this since that does not
200 * contain the subdevice information. In addition, struct dev
201 * can only refer to a single device, and not to multiple (e.g.
202 * pcm and mixer devices).
204 * So for now mark this as a to do.
215 * DEPRECATED: previous node specifications. Kept just to
216 * avoid breaking compilation, but media_entity_desc.dev
217 * should be used instead. In particular, alsa and dvb
218 * fields below are wrong: for all devnodes, there should
219 * be just major/minor inside the struct, as this is enough
220 * to represent any devnode, no matter what type.
233 /* Sub-device specifications */
234 /* Nothing needed yet */
239 #define MEDIA_PAD_FL_SINK (1 << 0)
240 #define MEDIA_PAD_FL_SOURCE (1 << 1)
241 #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
243 struct media_pad_desc {
244 __u32 entity; /* entity ID */
245 __u16 index; /* pad index */
246 __u32 flags; /* pad flags */
250 #define MEDIA_LNK_FL_ENABLED (1 << 0)
251 #define MEDIA_LNK_FL_IMMUTABLE (1 << 1)
252 #define MEDIA_LNK_FL_DYNAMIC (1 << 2)
254 #define MEDIA_LNK_FL_LINK_TYPE (0xf << 28)
255 # define MEDIA_LNK_FL_DATA_LINK (0 << 28)
256 # define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28)
258 struct media_link_desc {
259 struct media_pad_desc source;
260 struct media_pad_desc sink;
265 struct media_links_enum {
267 /* Should have enough room for pads elements */
268 struct media_pad_desc __user *pads;
269 /* Should have enough room for links elements */
270 struct media_link_desc __user *links;
274 /* Interface type ranges */
276 #define MEDIA_INTF_T_DVB_BASE 0x00000100
277 #define MEDIA_INTF_T_V4L_BASE 0x00000200
279 /* Interface types */
281 #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
282 #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
283 #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
284 #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
285 #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
287 #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
288 #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
289 #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
290 #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
291 #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
294 * MC next gen API definitions
296 * NOTE: The declarations below are close to the MC RFC for the Media
297 * Controller, the next generation. Yet, there are a few adjustments
298 * to do, as we want to be able to have a functional API before
299 * the MC properties change. Those will be properly marked below.
300 * Please also notice that I removed "num_pads", "num_links",
301 * from the proposal, as a proper userspace application will likely
302 * use lists for pads/links, just as we intend to do in Kernelspace.
303 * The API definition should be freed from fields that are bound to
304 * some specific data structure.
306 * FIXME: Currently, I opted to name the new types as "media_v2", as this
307 * won't cause any conflict with the Kernelspace namespace, nor with
308 * the previous kAPI media_*_desc namespace. This can be changed
309 * later, before the adding this API upstream.
313 struct media_v2_entity {
315 char name[64]; /* FIXME: move to a property? (RFC says so) */
316 __u32 function; /* Main function of the entity */
318 } __attribute__ ((packed));
320 /* Should match the specific fields at media_intf_devnode */
321 struct media_v2_intf_devnode {
324 } __attribute__ ((packed));
326 struct media_v2_interface {
333 struct media_v2_intf_devnode devnode;
336 } __attribute__ ((packed));
338 struct media_v2_pad {
343 } __attribute__ ((packed));
345 struct media_v2_link {
351 } __attribute__ ((packed));
353 struct media_v2_topology {
354 __u64 topology_version;
360 __u32 num_interfaces;
362 __u64 ptr_interfaces;
371 } __attribute__ ((packed));
373 static inline void __user *media_get_uptr(__u64 arg)
375 return (void __user *)(uintptr_t)arg;
380 #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info)
381 #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
382 #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
383 #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
384 #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
386 #endif /* __LINUX_MEDIA_H */