1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Multimedia device API
5 * Copyright (C) 2010 Nokia Corporation
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #ifndef __LINUX_MEDIA_H
21 #define __LINUX_MEDIA_H
26 #include <linux/ioctl.h>
27 #include <linux/types.h>
28 #include <linux/version.h>
30 struct media_device_info {
42 * Base number ranges for entity functions
44 * NOTE: Userspace should not rely on these ranges to identify a group
45 * of function types, as newer functions can be added with any name within
48 * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not
49 * change this, this is for backwards compatibility. When adding new
50 * functions always use MEDIA_ENT_F_BASE.
52 #define MEDIA_ENT_F_BASE 0x00000000
53 #define MEDIA_ENT_F_OLD_BASE 0x00010000
54 #define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000
57 * Initial value to be used when a new entity is created
58 * Drivers should change it to something useful.
60 #define MEDIA_ENT_F_UNKNOWN MEDIA_ENT_F_BASE
63 * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order
64 * to preserve backward compatibility. Drivers must change to the proper
65 * subdev type before registering the entity.
67 #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE
70 * DVB entity functions
72 #define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 0x00001)
73 #define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 0x00002)
74 #define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 0x00003)
75 #define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 0x00004)
78 * I/O entity functions
80 #define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1)
81 #define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 0x01001)
82 #define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 0x01002)
83 #define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 0x01003)
88 #define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
89 #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
90 #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
93 * Video decoder functions
95 #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
96 #define MEDIA_ENT_F_DTV_DECODER (MEDIA_ENT_F_BASE + 0x6001)
99 * Digital TV, analog TV, radio and/or software defined radio tuner functions.
101 * It is a responsibility of the master/bridge drivers to add connectors
102 * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
103 * may require the usage of separate I2C chips to decode analog TV signals,
104 * when the master/bridge chipset doesn't have its own TV standard decoder.
105 * On such cases, the IF-PLL staging is mapped via one or two entities:
106 * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
108 #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
111 * Analog TV IF-PLL decoder functions
113 * It is a responsibility of the master/bridge drivers to create links
114 * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER.
116 #define MEDIA_ENT_F_IF_VID_DECODER (MEDIA_ENT_F_BASE + 0x02001)
117 #define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 0x02002)
120 * Audio entity functions
122 #define MEDIA_ENT_F_AUDIO_CAPTURE (MEDIA_ENT_F_BASE + 0x03001)
123 #define MEDIA_ENT_F_AUDIO_PLAYBACK (MEDIA_ENT_F_BASE + 0x03002)
124 #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003)
127 * Processing entity functions
129 #define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE + 0x4001)
130 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE + 0x4002)
131 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE + 0x4003)
132 #define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004)
133 #define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE + 0x4005)
134 #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006)
137 * Switch and bridge entity functions
139 #define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001)
140 #define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002)
143 #define MEDIA_ENT_FL_DEFAULT (1 << 0)
144 #define MEDIA_ENT_FL_CONNECTOR (1 << 1)
146 /* OR with the entity id value to find the next entity */
147 #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31)
149 struct media_entity_desc {
162 /* Node specifications */
168 #if !defined(__KERNEL__)
170 * TODO: this shouldn't have been added without
171 * actual drivers that use this. When the first real driver
172 * appears that sets this information, special attention
173 * should be given whether this information is 1) enough, and
174 * 2) can deal with udev rules that rename devices. The struct
175 * dev would not be sufficient for this since that does not
176 * contain the subdevice information. In addition, struct dev
177 * can only refer to a single device, and not to multiple (e.g.
178 * pcm and mixer devices).
187 * DEPRECATED: previous node specifications. Kept just to
188 * avoid breaking compilation. Use media_entity_desc.dev
202 /* Sub-device specifications */
203 /* Nothing needed yet */
208 #define MEDIA_PAD_FL_SINK (1 << 0)
209 #define MEDIA_PAD_FL_SOURCE (1 << 1)
210 #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
212 struct media_pad_desc {
213 __u32 entity; /* entity ID */
214 __u16 index; /* pad index */
215 __u32 flags; /* pad flags */
219 #define MEDIA_LNK_FL_ENABLED (1 << 0)
220 #define MEDIA_LNK_FL_IMMUTABLE (1 << 1)
221 #define MEDIA_LNK_FL_DYNAMIC (1 << 2)
223 #define MEDIA_LNK_FL_LINK_TYPE (0xf << 28)
224 # define MEDIA_LNK_FL_DATA_LINK (0 << 28)
225 # define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28)
227 struct media_link_desc {
228 struct media_pad_desc source;
229 struct media_pad_desc sink;
234 struct media_links_enum {
236 /* Should have enough room for pads elements */
237 struct media_pad_desc __user *pads;
238 /* Should have enough room for links elements */
239 struct media_link_desc __user *links;
243 /* Interface type ranges */
245 #define MEDIA_INTF_T_DVB_BASE 0x00000100
246 #define MEDIA_INTF_T_V4L_BASE 0x00000200
248 /* Interface types */
250 #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
251 #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
252 #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
253 #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
254 #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
256 #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
257 #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
258 #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
259 #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
260 #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
261 #define MEDIA_INTF_T_V4L_TOUCH (MEDIA_INTF_T_V4L_BASE + 5)
263 #if defined(__KERNEL__)
266 * Connector functions
268 * For now these should not be used in userspace, as some definitions may
271 * It is the responsibility of the entity drivers to add connectors and links.
273 #define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 0x30001)
274 #define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 0x30002)
275 #define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 0x30003)
280 * MC next gen API definitions
283 struct media_v2_entity {
286 __u32 function; /* Main function of the entity */
288 } __attribute__ ((packed));
290 /* Should match the specific fields at media_intf_devnode */
291 struct media_v2_intf_devnode {
294 } __attribute__ ((packed));
296 struct media_v2_interface {
303 struct media_v2_intf_devnode devnode;
306 } __attribute__ ((packed));
308 struct media_v2_pad {
313 } __attribute__ ((packed));
315 struct media_v2_link {
321 } __attribute__ ((packed));
323 struct media_v2_topology {
324 __u64 topology_version;
330 __u32 num_interfaces;
332 __u64 ptr_interfaces;
341 } __attribute__ ((packed));
345 #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info)
346 #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
347 #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
348 #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
349 #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
351 #if !defined(__KERNEL__) || defined(__NEED_MEDIA_LEGACY_API)
354 * Legacy symbols used to avoid userspace compilation breakages.
355 * Do not use any of this in new applications!
357 * Those symbols map the entity function into types and should be
358 * used only on legacy programs for legacy hardware. Don't rely
359 * on those for MEDIA_IOC_G_TOPOLOGY.
361 #define MEDIA_ENT_TYPE_SHIFT 16
362 #define MEDIA_ENT_TYPE_MASK 0x00ff0000
363 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
365 #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \
366 MEDIA_ENT_SUBTYPE_MASK)
368 #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE
369 #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L
370 #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_F_OLD_BASE + 2)
371 #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_F_OLD_BASE + 3)
372 #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_F_OLD_BASE + 4)
374 #define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN
375 #define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L
376 #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
377 #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR
378 #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH
379 #define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS
380 #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER
381 #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER
384 * There is still no ALSA support in the media controller. These
385 * defines should not have been added and we leave them here only
386 * in case some application tries to use these defines.
388 #define MEDIA_INTF_T_ALSA_BASE 0x00000300
389 #define MEDIA_INTF_T_ALSA_PCM_CAPTURE (MEDIA_INTF_T_ALSA_BASE)
390 #define MEDIA_INTF_T_ALSA_PCM_PLAYBACK (MEDIA_INTF_T_ALSA_BASE + 1)
391 #define MEDIA_INTF_T_ALSA_CONTROL (MEDIA_INTF_T_ALSA_BASE + 2)
392 #define MEDIA_INTF_T_ALSA_COMPRESS (MEDIA_INTF_T_ALSA_BASE + 3)
393 #define MEDIA_INTF_T_ALSA_RAWMIDI (MEDIA_INTF_T_ALSA_BASE + 4)
394 #define MEDIA_INTF_T_ALSA_HWDEP (MEDIA_INTF_T_ALSA_BASE + 5)
395 #define MEDIA_INTF_T_ALSA_SEQUENCER (MEDIA_INTF_T_ALSA_BASE + 6)
396 #define MEDIA_INTF_T_ALSA_TIMER (MEDIA_INTF_T_ALSA_BASE + 7)
398 /* Obsolete symbol for media_version, no longer used in the kernel */
399 #define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0)
403 #endif /* __LINUX_MEDIA_H */