1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Multimedia device API
5 * Copyright (C) 2010 Nokia Corporation
7 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
8 * Sakari Ailus <sakari.ailus@iki.fi>
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>
29 struct media_device_info {
41 * Base number ranges for entity functions
43 * NOTE: Userspace should not rely on these ranges to identify a group
44 * of function types, as newer functions can be added with any name within
47 * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not
48 * change this, this is for backwards compatibility. When adding new
49 * functions always use MEDIA_ENT_F_BASE.
51 #define MEDIA_ENT_F_BASE 0x00000000
52 #define MEDIA_ENT_F_OLD_BASE 0x00010000
53 #define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000
56 * Initial value to be used when a new entity is created
57 * Drivers should change it to something useful.
59 #define MEDIA_ENT_F_UNKNOWN MEDIA_ENT_F_BASE
62 * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order
63 * to preserve backward compatibility. Drivers must change to the proper
64 * subdev type before registering the entity.
66 #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE
69 * DVB entity functions
71 #define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 0x00001)
72 #define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 0x00002)
73 #define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 0x00003)
74 #define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 0x00004)
77 * I/O entity functions
79 #define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1)
80 #define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 0x01001)
81 #define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 0x01002)
82 #define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 0x01003)
87 #define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
88 #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
89 #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
92 * Digital TV, analog TV, radio and/or software defined radio tuner functions.
94 * It is a responsibility of the master/bridge drivers to add connectors
95 * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
96 * may require the usage of separate I2C chips to decode analog TV signals,
97 * when the master/bridge chipset doesn't have its own TV standard decoder.
98 * On such cases, the IF-PLL staging is mapped via one or two entities:
99 * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
101 #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
104 * Analog TV IF-PLL decoder functions
106 * It is a responsibility of the master/bridge drivers to create links
107 * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER.
109 #define MEDIA_ENT_F_IF_VID_DECODER (MEDIA_ENT_F_BASE + 0x02001)
110 #define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 0x02002)
113 * Audio entity functions
115 #define MEDIA_ENT_F_AUDIO_CAPTURE (MEDIA_ENT_F_BASE + 0x03001)
116 #define MEDIA_ENT_F_AUDIO_PLAYBACK (MEDIA_ENT_F_BASE + 0x03002)
117 #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003)
120 * Processing entity functions
122 #define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE + 0x4001)
123 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE + 0x4002)
124 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE + 0x4003)
125 #define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004)
126 #define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE + 0x4005)
127 #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006)
128 #define MEDIA_ENT_F_PROC_VIDEO_ENCODER (MEDIA_ENT_F_BASE + 0x4007)
129 #define MEDIA_ENT_F_PROC_VIDEO_DECODER (MEDIA_ENT_F_BASE + 0x4008)
132 * Switch and bridge entity functions
134 #define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001)
135 #define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002)
138 * Video decoder/encoder functions
140 #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
141 #define MEDIA_ENT_F_DV_DECODER (MEDIA_ENT_F_BASE + 0x6001)
142 #define MEDIA_ENT_F_DV_ENCODER (MEDIA_ENT_F_BASE + 0x6002)
145 #define MEDIA_ENT_FL_DEFAULT (1 << 0)
146 #define MEDIA_ENT_FL_CONNECTOR (1 << 1)
148 /* OR with the entity id value to find the next entity */
149 #define MEDIA_ENT_ID_FLAG_NEXT (1U << 31)
151 struct media_entity_desc {
164 /* Node specifications */
170 #if !defined(__KERNEL__)
172 * TODO: this shouldn't have been added without
173 * actual drivers that use this. When the first real driver
174 * appears that sets this information, special attention
175 * should be given whether this information is 1) enough, and
176 * 2) can deal with udev rules that rename devices. The struct
177 * dev would not be sufficient for this since that does not
178 * contain the subdevice information. In addition, struct dev
179 * can only refer to a single device, and not to multiple (e.g.
180 * pcm and mixer devices).
189 * DEPRECATED: previous node specifications. Kept just to
190 * avoid breaking compilation. Use media_entity_desc.dev
204 /* Sub-device specifications */
205 /* Nothing needed yet */
210 #define MEDIA_PAD_FL_SINK (1 << 0)
211 #define MEDIA_PAD_FL_SOURCE (1 << 1)
212 #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
214 struct media_pad_desc {
215 __u32 entity; /* entity ID */
216 __u16 index; /* pad index */
217 __u32 flags; /* pad flags */
221 #define MEDIA_LNK_FL_ENABLED (1 << 0)
222 #define MEDIA_LNK_FL_IMMUTABLE (1 << 1)
223 #define MEDIA_LNK_FL_DYNAMIC (1 << 2)
225 #define MEDIA_LNK_FL_LINK_TYPE (0xf << 28)
226 # define MEDIA_LNK_FL_DATA_LINK (0 << 28)
227 # define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28)
229 struct media_link_desc {
230 struct media_pad_desc source;
231 struct media_pad_desc sink;
236 struct media_links_enum {
238 /* Should have enough room for pads elements */
239 struct media_pad_desc __user *pads;
240 /* Should have enough room for links elements */
241 struct media_link_desc __user *links;
245 /* Interface type ranges */
247 #define MEDIA_INTF_T_DVB_BASE 0x00000100
248 #define MEDIA_INTF_T_V4L_BASE 0x00000200
250 /* Interface types */
252 #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
253 #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
254 #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
255 #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
256 #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
258 #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
259 #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
260 #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
261 #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
262 #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
263 #define MEDIA_INTF_T_V4L_TOUCH (MEDIA_INTF_T_V4L_BASE + 5)
265 #define MEDIA_INTF_T_ALSA_BASE 0x00000300
266 #define MEDIA_INTF_T_ALSA_PCM_CAPTURE (MEDIA_INTF_T_ALSA_BASE)
267 #define MEDIA_INTF_T_ALSA_PCM_PLAYBACK (MEDIA_INTF_T_ALSA_BASE + 1)
268 #define MEDIA_INTF_T_ALSA_CONTROL (MEDIA_INTF_T_ALSA_BASE + 2)
270 #if defined(__KERNEL__)
273 * Connector functions
275 * For now these should not be used in userspace, as some definitions may
278 * It is the responsibility of the entity drivers to add connectors and links.
280 #define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 0x30001)
281 #define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 0x30002)
282 #define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 0x30003)
287 * MC next gen API definitions
291 * Appeared in 4.19.0.
293 * The media_version argument comes from the media_version field in
294 * struct media_device_info.
296 #define MEDIA_V2_ENTITY_HAS_FLAGS(media_version) \
297 ((media_version) >= ((4 << 16) | (19 << 8) | 0))
299 struct media_v2_entity {
302 __u32 function; /* Main function of the entity */
305 } __attribute__ ((packed));
307 /* Should match the specific fields at media_intf_devnode */
308 struct media_v2_intf_devnode {
311 } __attribute__ ((packed));
313 struct media_v2_interface {
320 struct media_v2_intf_devnode devnode;
323 } __attribute__ ((packed));
326 * Appeared in 4.19.0.
328 * The media_version argument comes from the media_version field in
329 * struct media_device_info.
331 #define MEDIA_V2_PAD_HAS_INDEX(media_version) \
332 ((media_version) >= ((4 << 16) | (19 << 8) | 0))
334 struct media_v2_pad {
340 } __attribute__ ((packed));
342 struct media_v2_link {
348 } __attribute__ ((packed));
350 struct media_v2_topology {
351 __u64 topology_version;
357 __u32 num_interfaces;
359 __u64 ptr_interfaces;
368 } __attribute__ ((packed));
372 #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info)
373 #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
374 #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
375 #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
376 #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
377 #define MEDIA_IOC_REQUEST_ALLOC _IOR ('|', 0x05, int)
380 * These ioctls are called on the request file descriptor as returned
381 * by MEDIA_IOC_REQUEST_ALLOC.
383 #define MEDIA_REQUEST_IOC_QUEUE _IO('|', 0x80)
384 #define MEDIA_REQUEST_IOC_REINIT _IO('|', 0x81)
389 * Legacy symbols used to avoid userspace compilation breakages.
390 * Do not use any of this in new applications!
392 * Those symbols map the entity function into types and should be
393 * used only on legacy programs for legacy hardware. Don't rely
394 * on those for MEDIA_IOC_G_TOPOLOGY.
396 #define MEDIA_ENT_TYPE_SHIFT 16
397 #define MEDIA_ENT_TYPE_MASK 0x00ff0000
398 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
400 #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \
401 MEDIA_ENT_SUBTYPE_MASK)
403 #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE
404 #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L
405 #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_F_OLD_BASE + 2)
406 #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_F_OLD_BASE + 3)
407 #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_F_OLD_BASE + 4)
409 #define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN
410 #define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L
411 #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
412 #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR
413 #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH
414 #define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS
415 #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER
416 #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER
418 #define MEDIA_ENT_F_DTV_DECODER MEDIA_ENT_F_DV_DECODER
421 * There is still no full ALSA support in the media controller. These
422 * defines should not have been added and we leave them here only
423 * in case some application tries to use these defines.
425 * The ALSA defines that are in use have been moved into __KERNEL__
426 * scope. As support gets added to these interface types, they should
427 * be moved into __KERNEL__ scope with the code that uses them.
429 #define MEDIA_INTF_T_ALSA_COMPRESS (MEDIA_INTF_T_ALSA_BASE + 3)
430 #define MEDIA_INTF_T_ALSA_RAWMIDI (MEDIA_INTF_T_ALSA_BASE + 4)
431 #define MEDIA_INTF_T_ALSA_HWDEP (MEDIA_INTF_T_ALSA_BASE + 5)
432 #define MEDIA_INTF_T_ALSA_SEQUENCER (MEDIA_INTF_T_ALSA_BASE + 6)
433 #define MEDIA_INTF_T_ALSA_TIMER (MEDIA_INTF_T_ALSA_BASE + 7)
435 /* Obsolete symbol for media_version, no longer used in the kernel */
436 #define MEDIA_API_VERSION ((0 << 16) | (1 << 8) | 0)
440 #endif /* __LINUX_MEDIA_H */