2 * Multimedia device API
4 * Copyright (C) 2010 Nokia Corporation
6 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
7 * Sakari Ailus <sakari.ailus@iki.fi>
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 + 0x02001)
88 #define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 0x02002)
91 * Audio Entity Functions
93 #define MEDIA_ENT_F_AUDIO_CAPTURE (MEDIA_ENT_F_BASE + 0x03001)
94 #define MEDIA_ENT_F_AUDIO_PLAYBACK (MEDIA_ENT_F_BASE + 0x03002)
95 #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003)
100 #define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE + 0x4001)
101 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE + 0x4002)
102 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE + 0x4003)
103 #define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004)
104 #define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE + 0x4005)
105 #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006)
108 * Switch and bridge entitites
110 #define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001)
111 #define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002)
116 /* It is a responsibility of the entity drivers to add connectors and links */
119 * For now, it should not be used in userspace, as some
120 * definitions may change
123 #define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 0x30001)
124 #define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 0x30002)
125 #define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 0x30003)
130 * Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and
131 * MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility
132 * with the legacy v1 API.The number range is out of range by purpose:
133 * several previously reserved numbers got excluded from this range.
135 * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
136 * in order to preserve backward compatibility.
137 * Drivers must change to the proper subdev type before
138 * registering the entity.
141 #define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1)
143 #define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
144 #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
145 #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
146 #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
148 * It is a responsibility of the master/bridge drivers to add connectors
149 * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
150 * may require the usage of separate I2C chips to decode analog TV signals,
151 * when the master/bridge chipset doesn't have its own TV standard decoder.
152 * On such cases, the IF-PLL staging is mapped via one or two entities:
153 * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
155 #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
157 #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE
159 #if !defined(__KERNEL__) || defined(__NEED_MEDIA_LEGACY_API)
162 * Legacy symbols used to avoid userspace compilation breakages
164 * Those symbols map the entity function into types and should be
165 * used only on legacy programs for legacy hardware. Don't rely
166 * on those for MEDIA_IOC_G_TOPOLOGY.
168 #define MEDIA_ENT_TYPE_SHIFT 16
169 #define MEDIA_ENT_TYPE_MASK 0x00ff0000
170 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
172 /* End of the old subdev reserved numberspace */
173 #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_T_DEVNODE | \
174 MEDIA_ENT_SUBTYPE_MASK)
176 #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE
177 #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L
178 #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2)
179 #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3)
180 #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4)
182 #define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN
183 #define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L
184 #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
185 #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR
186 #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH
187 #define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS
188 #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER
189 #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER
193 #define MEDIA_ENT_FL_DEFAULT (1 << 0)
194 #define MEDIA_ENT_FL_CONNECTOR (1 << 1)
196 struct media_entity_desc {
209 /* Node specifications */
217 * TODO: this shouldn't have been added without
218 * actual drivers that use this. When the first real driver
219 * appears that sets this information, special attention
220 * should be given whether this information is 1) enough, and
221 * 2) can deal with udev rules that rename devices. The struct
222 * dev would not be sufficient for this since that does not
223 * contain the subdevice information. In addition, struct dev
224 * can only refer to a single device, and not to multiple (e.g.
225 * pcm and mixer devices).
227 * So for now mark this as a to do.
238 * DEPRECATED: previous node specifications. Kept just to
239 * avoid breaking compilation, but media_entity_desc.dev
240 * should be used instead. In particular, alsa and dvb
241 * fields below are wrong: for all devnodes, there should
242 * be just major/minor inside the struct, as this is enough
243 * to represent any devnode, no matter what type.
256 /* Sub-device specifications */
257 /* Nothing needed yet */
262 #define MEDIA_PAD_FL_SINK (1 << 0)
263 #define MEDIA_PAD_FL_SOURCE (1 << 1)
264 #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
266 struct media_pad_desc {
267 __u32 entity; /* entity ID */
268 __u16 index; /* pad index */
269 __u32 flags; /* pad flags */
273 #define MEDIA_LNK_FL_ENABLED (1 << 0)
274 #define MEDIA_LNK_FL_IMMUTABLE (1 << 1)
275 #define MEDIA_LNK_FL_DYNAMIC (1 << 2)
277 #define MEDIA_LNK_FL_LINK_TYPE (0xf << 28)
278 # define MEDIA_LNK_FL_DATA_LINK (0 << 28)
279 # define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28)
281 struct media_link_desc {
282 struct media_pad_desc source;
283 struct media_pad_desc sink;
288 struct media_links_enum {
290 /* Should have enough room for pads elements */
291 struct media_pad_desc __user *pads;
292 /* Should have enough room for links elements */
293 struct media_link_desc __user *links;
297 /* Interface type ranges */
299 #define MEDIA_INTF_T_DVB_BASE 0x00000100
300 #define MEDIA_INTF_T_V4L_BASE 0x00000200
301 #define MEDIA_INTF_T_ALSA_BASE 0x00000300
303 /* Interface types */
305 #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
306 #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
307 #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
308 #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
309 #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
311 #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
312 #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
313 #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
314 #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
315 #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
316 #define MEDIA_INTF_T_V4L_TOUCH (MEDIA_INTF_T_V4L_BASE + 5)
318 #define MEDIA_INTF_T_ALSA_PCM_CAPTURE (MEDIA_INTF_T_ALSA_BASE)
319 #define MEDIA_INTF_T_ALSA_PCM_PLAYBACK (MEDIA_INTF_T_ALSA_BASE + 1)
320 #define MEDIA_INTF_T_ALSA_CONTROL (MEDIA_INTF_T_ALSA_BASE + 2)
321 #define MEDIA_INTF_T_ALSA_COMPRESS (MEDIA_INTF_T_ALSA_BASE + 3)
322 #define MEDIA_INTF_T_ALSA_RAWMIDI (MEDIA_INTF_T_ALSA_BASE + 4)
323 #define MEDIA_INTF_T_ALSA_HWDEP (MEDIA_INTF_T_ALSA_BASE + 5)
324 #define MEDIA_INTF_T_ALSA_SEQUENCER (MEDIA_INTF_T_ALSA_BASE + 6)
325 #define MEDIA_INTF_T_ALSA_TIMER (MEDIA_INTF_T_ALSA_BASE + 7)
328 * MC next gen API definitions
330 * NOTE: The declarations below are close to the MC RFC for the Media
331 * Controller, the next generation. Yet, there are a few adjustments
332 * to do, as we want to be able to have a functional API before
333 * the MC properties change. Those will be properly marked below.
334 * Please also notice that I removed "num_pads", "num_links",
335 * from the proposal, as a proper userspace application will likely
336 * use lists for pads/links, just as we intend to do in Kernelspace.
337 * The API definition should be freed from fields that are bound to
338 * some specific data structure.
340 * FIXME: Currently, I opted to name the new types as "media_v2", as this
341 * won't cause any conflict with the Kernelspace namespace, nor with
342 * the previous kAPI media_*_desc namespace. This can be changed
343 * later, before the adding this API upstream.
347 struct media_v2_entity {
349 char name[64]; /* FIXME: move to a property? (RFC says so) */
350 __u32 function; /* Main function of the entity */
352 } __attribute__ ((packed));
354 /* Should match the specific fields at media_intf_devnode */
355 struct media_v2_intf_devnode {
358 } __attribute__ ((packed));
360 struct media_v2_interface {
367 struct media_v2_intf_devnode devnode;
370 } __attribute__ ((packed));
372 struct media_v2_pad {
377 } __attribute__ ((packed));
379 struct media_v2_link {
385 } __attribute__ ((packed));
387 struct media_v2_topology {
388 __u64 topology_version;
394 __u32 num_interfaces;
396 __u64 ptr_interfaces;
405 } __attribute__ ((packed));
409 #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info)
410 #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
411 #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
412 #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
413 #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
415 #endif /* __LINUX_MEDIA_H */