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Hans Verkuil2a1fcdf2008-11-29 21:36:58 -03001/*
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -03002 * V4L2 sub-device support header.
3 *
4 * Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030015 */
16
17#ifndef _V4L2_SUBDEV_H
18#define _V4L2_SUBDEV_H
19
Sylwester Nawrocki29103112012-05-17 14:33:30 -030020#include <linux/types.h>
Laurent Pinchart333c8b92010-03-15 20:26:04 -030021#include <linux/v4l2-subdev.h>
Laurent Pinchart61f5db52009-12-09 08:40:08 -030022#include <media/media-entity.h>
Guennadi Liakhovetskie9e31042013-01-08 07:06:31 -030023#include <media/v4l2-async.h>
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030024#include <media/v4l2-common.h>
Laurent Pinchart2096a5d2009-12-09 08:38:49 -030025#include <media/v4l2-dev.h>
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -030026#include <media/v4l2-fh.h>
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -030027#include <media/v4l2-mediabus.h>
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030028
Andy Walls1d986ad2009-09-27 17:50:04 -030029/* generic v4l2_device notify callback notification values */
30#define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32)
31#define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001
32#define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002
33#define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004
34#define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008
35
36#define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32)
37#define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001
38
jean-michel.hautbois@vodalys.com17e48462015-03-18 07:21:47 -030039#define V4L2_DEVICE_NOTIFY_EVENT _IOW('v', 2, struct v4l2_event)
40
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030041struct v4l2_device;
Hans Verkuil09965172010-08-01 14:32:42 -030042struct v4l2_ctrl_handler;
Lars-Peter Clausen8ae56402015-06-24 13:50:29 -030043struct v4l2_event;
Sakari Ailus02adb1c2010-03-03 12:49:38 -030044struct v4l2_event_subscription;
45struct v4l2_fh;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030046struct v4l2_subdev;
Laurent Pinchartf0beea82010-08-01 19:05:09 -030047struct v4l2_subdev_fh;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030048struct tuner_setup;
Sylwester Nawrocki29103112012-05-17 14:33:30 -030049struct v4l2_mbus_frame_desc;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030050
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -030051/**
52 * struct v4l2_decode_vbi_line - used to decode_vbi_line
53 *
54 * @is_second_field: Set to 0 for the first (odd) field;
55 * set to 1 for the second (even) field.
56 * @p: Pointer to the sliced VBI data from the decoder. On exit, points to
57 * the start of the payload.
58 * @line: Line number of the sliced VBI data (1-23)
59 * @type: VBI service type (V4L2_SLICED_*). 0 if no service found
60 */
Hans Verkuil78a3b4d2009-04-01 03:41:09 -030061struct v4l2_decode_vbi_line {
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -030062 u32 is_second_field;
63 u8 *p;
64 u32 line;
65 u32 type;
Hans Verkuil78a3b4d2009-04-01 03:41:09 -030066};
67
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -030068/*
69 * Sub-devices are devices that are connected somehow to the main bridge
70 * device. These devices are usually audio/video muxers/encoders/decoders or
71 * sensors and webcam controllers.
72 *
73 * Usually these devices are controlled through an i2c bus, but other busses
74 * may also be used.
75 *
76 * The v4l2_subdev struct provides a way of accessing these devices in a
77 * generic manner. Most operations that these sub-devices support fall in
78 * a few categories: core ops, audio ops, video ops and tuner ops.
79 *
80 * More categories can be added if needed, although this should remain a
81 * limited set (no more than approx. 8 categories).
82 *
83 * Each category has its own set of ops that subdev drivers can implement.
84 *
85 * A subdev driver can leave the pointer to the category ops NULL if
86 * it does not implement them (e.g. an audio subdev will generally not
87 * implement the video category ops). The exception is the core category:
88 * this must always be present.
89 *
90 * These ops are all used internally so it is no problem to change, remove
91 * or add ops or move ops from one to another category. Currently these
92 * ops are based on the original ioctls, but since ops are not limited to
93 * one argument there is room for improvement here once all i2c subdev
94 * drivers are converted to use these ops.
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030095 */
96
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -030097/*
98 * Core ops: it is highly recommended to implement at least these ops:
99 *
100 * log_status
101 * g_register
102 * s_register
103 *
104 * This provides basic debugging support.
105 *
106 * The ioctl ops is meant for generic ioctl-like commands. Depending on
107 * the use-case it might be better to use subdev-specific ops (currently
108 * not yet implemented) since ops provide proper type-checking.
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300109 */
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300110
Andy Walls66752f82010-07-18 18:51:10 -0300111/* Subdevice external IO pin configuration */
112#define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */
113#define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1)
114#define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2)
115#define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */
116#define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */
117
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300118/**
119 * struct v4l2_subdev_io_pin_config - Subdevice external IO pin configuration
120 *
121 * @flags: bitmask with flags for this pin's config:
122 * %V4L2_SUBDEV_IO_PIN_DISABLE - disables a pin config,
123 * %V4L2_SUBDEV_IO_PIN_OUTPUT - if pin is an output,
124 * %V4L2_SUBDEV_IO_PIN_INPUT - if pin is an input,
125 * %V4L2_SUBDEV_IO_PIN_SET_VALUE - to set the output value via @value
126 * and %V4L2_SUBDEV_IO_PIN_ACTIVE_LOW - if active is 0.
127 * @pin: Chip external IO pin to configure
128 * @function: Internal signal pad/function to route to IO pin
129 * @value: Initial value for pin - e.g. GPIO output value
130 * @strength: Pin drive strength
131 */
Andy Walls66752f82010-07-18 18:51:10 -0300132struct v4l2_subdev_io_pin_config {
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300133 u32 flags;
134 u8 pin;
135 u8 function;
136 u8 value;
137 u8 strength;
Andy Walls66752f82010-07-18 18:51:10 -0300138};
139
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300140/**
Mauro Carvalho Chehab783001a2015-08-22 06:00:22 -0300141 * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs
142 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300143 * @log_status: callback for %VIDIOC_LOG_STATUS ioctl handler code.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300144 *
145 * @s_io_pin_config: configure one or more chip I/O pins for chips that
146 * multiplex different internal signal pads out to IO pins. This function
147 * takes a pointer to an array of 'n' pin configuration entries, one for
148 * each pin being configured. This function could be called at times
149 * other than just subdevice initialization.
150 *
151 * @init: initialize the sensor registers to some sort of reasonable default
152 * values. Do not use for new drivers and should be removed in existing
153 * drivers.
154 *
155 * @load_fw: load firmware.
156 *
157 * @reset: generic reset command. The argument selects which subsystems to
158 * reset. Passing 0 will always reset the whole chip. Do not use for new
159 * drivers without discussing this first on the linux-media mailinglist.
160 * There should be no reason normally to reset a device.
161 *
162 * @s_gpio: set GPIO pins. Very simple right now, might need to be extended with
163 * a direction argument if needed.
164 *
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300165 * @ioctl: called at the end of ioctl() syscall handler at the V4L2 core.
166 * used to provide support for private ioctls used on the driver.
167 *
168 * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel,
169 * in order to fix data passed from/to userspace.
170 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300171 * @g_register: callback for %VIDIOC_G_REGISTER ioctl handler code.
Mauro Carvalho Chehab783001a2015-08-22 06:00:22 -0300172 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300173 * @s_register: callback for %VIDIOC_G_REGISTER ioctl handler code.
Mauro Carvalho Chehab783001a2015-08-22 06:00:22 -0300174 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300175 * @s_power: puts subdevice in power saving mode (on == 0) or normal operation
176 * mode (on == 1).
177 *
178 * @interrupt_service_routine: Called by the bridge chip's interrupt service
179 * handler, when an interrupt status has be raised due to this subdev,
180 * so that this subdev can handle the details. It may schedule work to be
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300181 * performed later. It must not sleep. **Called from an IRQ context**.
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300182 *
183 * @subscribe_event: used by the drivers to request the control framework that
184 * for it to be warned when the value of a control changes.
185 *
186 * @unsubscribe_event: remove event subscription from the control framework.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300187 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300188struct v4l2_subdev_core_ops {
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300189 int (*log_status)(struct v4l2_subdev *sd);
Andy Walls66752f82010-07-18 18:51:10 -0300190 int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n,
191 struct v4l2_subdev_io_pin_config *pincfg);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300192 int (*init)(struct v4l2_subdev *sd, u32 val);
Hans Verkuilcc26b072009-03-29 19:20:26 -0300193 int (*load_fw)(struct v4l2_subdev *sd);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300194 int (*reset)(struct v4l2_subdev *sd, u32 val);
195 int (*s_gpio)(struct v4l2_subdev *sd, u32 val);
Hans Verkuil069b7472008-12-30 07:04:34 -0300196 long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
Hans Verkuilab58a302014-02-10 08:08:44 -0300197#ifdef CONFIG_COMPAT
198 long (*compat_ioctl32)(struct v4l2_subdev *sd, unsigned int cmd,
199 unsigned long arg);
200#endif
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300201#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300202 int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
Hans Verkuil977ba3b2013-03-24 08:28:46 -0300203 int (*s_register)(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300204#endif
Laurent Pinchart622b8282009-10-05 10:48:17 -0300205 int (*s_power)(struct v4l2_subdev *sd, int on);
Andy Walls260e689b2010-07-18 20:54:52 -0300206 int (*interrupt_service_routine)(struct v4l2_subdev *sd,
207 u32 status, bool *handled);
Sakari Ailus02adb1c2010-03-03 12:49:38 -0300208 int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
209 struct v4l2_event_subscription *sub);
210 int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
211 struct v4l2_event_subscription *sub);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300212};
213
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300214/**
Mauro Carvalho Chehabe383ce02016-09-22 07:59:03 -0300215 * struct v4l2_subdev_tuner_ops - Callbacks used when v4l device was opened
216 * in radio mode.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300217 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300218 * @s_radio: callback for %VIDIOC_S_RADIO ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300219 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300220 * @s_frequency: callback for %VIDIOC_S_FREQUENCY ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300221 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300222 * @g_frequency: callback for %VIDIOC_G_FREQUENCY ioctl handler code.
223 * freq->type must be filled in. Normally done by video_ioctl2()
Mauro Carvalho Chehab89cb3dd2016-07-17 08:44:08 -0300224 * or the bridge driver.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300225 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300226 * @enum_freq_bands: callback for %VIDIOC_ENUM_FREQ_BANDS ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300227 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300228 * @g_tuner: callback for %VIDIOC_G_TUNER ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300229 *
Mauro Carvalho Chehab59d44bb2016-08-30 21:08:17 -0300230 * @s_tuner: callback for %VIDIOC_S_TUNER ioctl handler code. @vt->type must be
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300231 * filled in. Normally done by video_ioctl2 or the
Mauro Carvalho Chehab89cb3dd2016-07-17 08:44:08 -0300232 * bridge driver.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300233 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300234 * @g_modulator: callback for %VIDIOC_G_MODULATOR ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300235 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300236 * @s_modulator: callback for %VIDIOC_S_MODULATOR ioctl handler code.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300237 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300238 * @s_type_addr: sets tuner type and its I2C addr.
Mauro Carvalho Chehab91963aa2015-08-22 06:07:29 -0300239 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300240 * @s_config: sets tda9887 specific stuff, like port1, port2 and qss
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300241 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300242struct v4l2_subdev_tuner_ops {
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300243 int (*s_radio)(struct v4l2_subdev *sd);
Hans Verkuilb530a442013-03-19 04:09:26 -0300244 int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300245 int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq);
Antti Palosaaric58d1de2014-02-05 02:24:35 -0300246 int (*enum_freq_bands)(struct v4l2_subdev *sd, struct v4l2_frequency_band *band);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300247 int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt);
Hans Verkuil2f73c7c2013-03-15 06:10:06 -0300248 int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt);
Eduardo Valentind6bacea2009-08-08 08:34:18 -0300249 int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm);
Hans Verkuil3f70e1f2012-09-04 12:08:47 -0300250 int (*s_modulator)(struct v4l2_subdev *sd, const struct v4l2_modulator *vm);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300251 int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type);
252 int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config);
253};
254
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300255/**
256 * struct v4l2_subdev_audio_ops - Callbacks used for audio-related settings
257 *
258 * @s_clock_freq: set the frequency (in Hz) of the audio clock output.
259 * Used to slave an audio processor to the video decoder, ensuring that
260 * audio and video remain synchronized. Usual values for the frequency
261 * are 48000, 44100 or 32000 Hz. If the frequency is not supported, then
262 * -EINVAL is returned.
263 *
264 * @s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard
265 * way to select I2S clock used by driving digital audio streams at some
266 * board designs. Usual values for the frequency are 1024000 and 2048000.
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300267 * If the frequency is not supported, then %-EINVAL is returned.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300268 *
269 * @s_routing: used to define the input and/or output pins of an audio chip,
270 * and any additional configuration data.
271 * Never attempt to use user-level input IDs (e.g. Composite, S-Video,
272 * Tuner) at this level. An i2c device shouldn't know about whether an
273 * input pin is connected to a Composite connector, become on another
274 * board or platform it might be connected to something else entirely.
275 * The calling driver is responsible for mapping a user-level input to
276 * the right pins on the i2c device.
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300277 *
278 * @s_stream: used to notify the audio code that stream will start or has
279 * stopped.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300280 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300281struct v4l2_subdev_audio_ops {
282 int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
283 int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
Hans Verkuil5325b422009-04-02 11:26:22 -0300284 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
Andy Walls3ccc6462009-12-24 13:06:08 -0300285 int (*s_stream)(struct v4l2_subdev *sd, int enable);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300286};
287
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300288/* Indicates the @length field specifies maximum data length. */
289#define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX (1U << 0)
Sakari Ailus174d6a32013-12-18 08:40:28 -0300290/*
291 * Indicates that the format does not have line offsets, i.e. the
292 * receiver should use 1D DMA.
293 */
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300294#define V4L2_MBUS_FRAME_DESC_FL_BLOB (1U << 1)
295
296/**
297 * struct v4l2_mbus_frame_desc_entry - media bus frame description structure
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300298 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300299 * @flags: bitmask flags: %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX and
300 * %V4L2_MBUS_FRAME_DESC_FL_BLOB.
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300301 * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
Sakari Ailus174d6a32013-12-18 08:40:28 -0300302 * @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
303 * is set
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300304 */
305struct v4l2_mbus_frame_desc_entry {
306 u16 flags;
307 u32 pixelcode;
308 u32 length;
309};
310
311#define V4L2_FRAME_DESC_ENTRY_MAX 4
312
313/**
314 * struct v4l2_mbus_frame_desc - media bus data frame description
315 * @entry: frame descriptors array
316 * @num_entries: number of entries in @entry array
317 */
318struct v4l2_mbus_frame_desc {
319 struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX];
320 unsigned short num_entries;
321};
322
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300323/**
324 * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300325 * in video mode.
Mauro Carvalho Chehabb84aeb02015-08-22 06:12:35 -0300326 *
327 * @s_routing: see s_routing in audio_ops, except this version is for video
328 * devices.
329 *
330 * @s_crystal_freq: sets the frequency of the crystal used to generate the
331 * clocks in Hz. An extra flags field allows device specific configuration
332 * regarding clock frequency dividers, etc. If not used, then set flags
333 * to 0. If the frequency is not supported, then -EINVAL is returned.
334 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300335 * @g_std: callback for %VIDIOC_G_STD ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300336 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300337 * @s_std: callback for %VIDIOC_S_STD ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300338 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300339 * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
340 * video input devices.
341 *
342 * @g_std_output: get current standard for video OUTPUT devices. This is ignored
343 * by video input devices.
344 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300345 * @querystd: callback for %VIDIOC_QUERYSTD ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300346 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300347 * @g_tvnorms: get &v4l2_std_id with all standards supported by the video
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300348 * CAPTURE device. This is ignored by video output devices.
349 *
350 * @g_tvnorms_output: get v4l2_std_id with all standards supported by the video
351 * OUTPUT device. This is ignored by video capture devices.
352 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300353 * @g_input_status: get input status. Same as the status field in the
354 * &struct &v4l2_input
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300355 *
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300356 * @s_stream: used to notify the driver that a video stream will start or has
357 * stopped.
358 *
Hans Verkuilecf37492016-07-04 05:08:01 -0300359 * @g_pixelaspect: callback to return the pixelaspect ratio.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300360 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300361 * @g_parm: callback for %VIDIOC_G_PARM ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300362 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300363 * @s_parm: callback for %VIDIOC_S_PARM ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300364 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300365 * @g_frame_interval: callback for %VIDIOC_G_FRAMEINTERVAL ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300366 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300367 * @s_frame_interval: callback for %VIDIOC_S_FRAMEINTERVAL ioctl handler code.
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300368 *
369 * @s_dv_timings: Set custom dv timings in the sub device. This is used
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300370 * when sub device is capable of setting detailed timing information
371 * in the hardware to generate/detect the video signal.
372 *
Mauro Carvalho Chehab914728a2015-08-22 06:18:13 -0300373 * @g_dv_timings: Get custom dv timings in the sub device.
374 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300375 * @query_dv_timings: callback for %VIDIOC_QUERY_DV_TIMINGS ioctl handler code.
Mauro Carvalho Chehabb84aeb02015-08-22 06:12:35 -0300376 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300377 * @g_mbus_config: get supported mediabus configurations
378 *
379 * @s_mbus_config: set a certain mediabus configuration. This operation is added
380 * for compatibility with soc-camera drivers and should not be used by new
381 * software.
382 *
383 * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev
384 * can adjust @size to a lower value and must not write more data to the
385 * buffer starting at @data than the original value of @size.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300386 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300387struct v4l2_subdev_video_ops {
Hans Verkuil5325b422009-04-02 11:26:22 -0300388 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
Hans Verkuil3ff4ad82009-04-01 03:15:52 -0300389 int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags);
Laurent Pinchart8774bed2014-04-28 16:53:01 -0300390 int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm);
391 int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300392 int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std);
Tomasz Stanislawski5930ab22011-06-29 07:16:15 -0300393 int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
Hans Verkuil1b6f1d92009-02-13 07:48:21 -0300394 int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std);
Hans Verkuil48353862014-02-17 08:44:12 -0300395 int (*g_tvnorms)(struct v4l2_subdev *sd, v4l2_std_id *std);
Tomasz Stanislawski839cf812011-03-02 13:16:37 -0300396 int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
Hans Verkuil1b6f1d92009-02-13 07:48:21 -0300397 int (*g_input_status)(struct v4l2_subdev *sd, u32 *status);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300398 int (*s_stream)(struct v4l2_subdev *sd, int enable);
Hans Verkuilecf37492016-07-04 05:08:01 -0300399 int (*g_pixelaspect)(struct v4l2_subdev *sd, struct v4l2_fract *aspect);
Hans Verkuil2da94792009-02-06 18:59:35 -0300400 int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
401 int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
Laurent Pinchart35c30172010-05-05 11:38:35 -0300402 int (*g_frame_interval)(struct v4l2_subdev *sd,
403 struct v4l2_subdev_frame_interval *interval);
404 int (*s_frame_interval)(struct v4l2_subdev *sd,
405 struct v4l2_subdev_frame_interval *interval);
Muralidharan Karicherib6456c02009-11-19 12:00:31 -0300406 int (*s_dv_timings)(struct v4l2_subdev *sd,
407 struct v4l2_dv_timings *timings);
408 int (*g_dv_timings)(struct v4l2_subdev *sd,
409 struct v4l2_dv_timings *timings);
Hans Verkuil5d7758e2012-05-15 08:06:44 -0300410 int (*query_dv_timings)(struct v4l2_subdev *sd,
411 struct v4l2_dv_timings *timings);
Guennadi Liakhovetski91c79532011-07-01 14:31:17 -0300412 int (*g_mbus_config)(struct v4l2_subdev *sd,
413 struct v4l2_mbus_config *cfg);
414 int (*s_mbus_config)(struct v4l2_subdev *sd,
415 const struct v4l2_mbus_config *cfg);
Sylwester Nawrockia375e1d2012-09-13 13:08:19 -0300416 int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf,
417 unsigned int *size);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300418};
419
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300420/**
421 * struct v4l2_subdev_vbi_ops - Callbacks used when v4l device was opened
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300422 * in video mode via the vbi device node.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300423 *
424 * @decode_vbi_line: video decoders that support sliced VBI need to implement
Mauro Carvalho Chehab9ef0b3f2016-09-09 08:40:15 -0300425 * this ioctl. Field p of the &struct v4l2_decode_vbi_line is set to the
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300426 * start of the VBI data that was generated by the decoder. The driver
427 * then parses the sliced VBI data and sets the other fields in the
428 * struct accordingly. The pointer p is updated to point to the start of
429 * the payload which can be copied verbatim into the data field of the
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300430 * &struct v4l2_sliced_vbi_data. If no valid VBI data was found, then the
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300431 * type field is set to 0 on return.
432 *
433 * @s_vbi_data: used to generate VBI signals on a video signal.
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300434 * &struct v4l2_sliced_vbi_data is filled with the data packets that
435 * should be output. Note that if you set the line field to 0, then that
436 * VBI signal is disabled. If no valid VBI data was found, then the type
437 * field is set to 0 on return.
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300438 *
439 * @g_vbi_data: used to obtain the sliced VBI packet from a readback register.
440 * Not all video decoders support this. If no data is available because
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300441 * the readback register contains invalid or erroneous data %-EIO is
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300442 * returned. Note that you must fill in the 'id' member and the 'field'
443 * member (to determine whether CC data from the first or second field
444 * should be obtained).
445 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300446 * @g_sliced_vbi_cap: callback for %VIDIOC_SLICED_VBI_CAP ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300447 *
Mauro Carvalho Chehab5c662982015-08-22 05:40:29 -0300448 * @s_raw_fmt: setup the video encoder/decoder for raw VBI.
449 *
450 * @g_sliced_fmt: retrieve the current sliced VBI settings.
451 *
452 * @s_sliced_fmt: setup the sliced VBI settings.
Hans Verkuil32cd5272010-03-14 09:57:30 -0300453 */
454struct v4l2_subdev_vbi_ops {
455 int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line);
456 int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data);
457 int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data);
458 int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap);
Hans Verkuil54aefaf2010-03-14 10:02:50 -0300459 int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt);
460 int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
461 int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
Hans Verkuil32cd5272010-03-14 09:57:30 -0300462};
463
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300464/**
465 * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations
466 * @g_skip_top_lines: number of lines at the top of the image to be skipped.
467 * This is needed for some sensors, which always corrupt
468 * several top lines of the output image, or which send their
469 * metadata in them.
Laurent Pinchartf80a3ab2010-11-16 01:21:06 -0300470 * @g_skip_frames: number of frames to skip at stream start. This is needed for
471 * buggy sensors that generate faulty frames when they are
472 * turned on.
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300473 */
474struct v4l2_subdev_sensor_ops {
475 int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines);
Laurent Pinchartf80a3ab2010-11-16 01:21:06 -0300476 int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames);
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300477};
478
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300479/**
480 * enum v4l2_subdev_ir_mode- describes the type of IR supported
481 *
482 * @V4L2_SUBDEV_IR_MODE_PULSE_WIDTH: IR uses struct ir_raw_event records
Andy Walls1d986ad2009-09-27 17:50:04 -0300483 */
Andy Walls1d986ad2009-09-27 17:50:04 -0300484enum v4l2_subdev_ir_mode {
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300485 V4L2_SUBDEV_IR_MODE_PULSE_WIDTH,
Andy Walls1d986ad2009-09-27 17:50:04 -0300486};
487
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300488/**
489 * struct v4l2_subdev_ir_parameters - Parameters for IR TX or TX
490 *
491 * @bytes_per_data_element: bytes per data element of data in read or
492 * write call.
493 * @mode: IR mode as defined by &enum v4l2_subdev_ir_mode.
494 * @enable: device is active if true
495 * @interrupt_enable: IR interrupts are enabled if true
496 * @shutdown: if true: set hardware to low/no power, false: normal mode
497 *
498 * @modulation: if true, it uses carrier, if false: baseband
499 * @max_pulse_width: maximum pulse width in ns, valid only for baseband signal
500 * @carrier_freq: carrier frequency in Hz, valid only for modulated signal
501 * @duty_cycle: duty cycle percentage, valid only for modulated signal
502 * @invert_level: invert signal level
503 *
504 * @invert_carrier_sense: Send 0/space as a carrier burst. used only in TX.
505 *
506 * @noise_filter_min_width: min time of a valid pulse, in ns. Used only for RX.
507 * @carrier_range_lower: Lower carrier range, in Hz, valid only for modulated
508 * signal. Used only for RX.
509 * @carrier_range_upper: Upper carrier range, in Hz, valid only for modulated
510 * signal. Used only for RX.
511 * @resolution: The receive resolution, in ns . Used only for RX.
512 */
Andy Walls1d986ad2009-09-27 17:50:04 -0300513struct v4l2_subdev_ir_parameters {
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300514 unsigned int bytes_per_data_element;
Andy Walls1d986ad2009-09-27 17:50:04 -0300515 enum v4l2_subdev_ir_mode mode;
516
517 bool enable;
518 bool interrupt_enable;
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300519 bool shutdown;
Andy Walls1d986ad2009-09-27 17:50:04 -0300520
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300521 bool modulation;
522 u32 max_pulse_width;
523 unsigned int carrier_freq;
524 unsigned int duty_cycle;
525 bool invert_level;
Andy Walls5a28d9a2010-07-18 19:57:25 -0300526
527 /* Tx only */
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300528 bool invert_carrier_sense;
Andy Walls1d986ad2009-09-27 17:50:04 -0300529
530 /* Rx only */
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300531 u32 noise_filter_min_width;
532 unsigned int carrier_range_lower;
533 unsigned int carrier_range_upper;
534 u32 resolution;
Andy Walls1d986ad2009-09-27 17:50:04 -0300535};
536
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300537/**
538 * struct v4l2_subdev_ir_ops - operations for IR subdevices
539 *
540 * @rx_read: Reads received codes or pulse width data.
541 * The semantics are similar to a non-blocking read() call.
542 * @rx_g_parameters: Get the current operating parameters and state of the
543 * the IR receiver.
544 * @rx_s_parameters: Set the current operating parameters and state of the
545 * the IR receiver. It is recommended to call
546 * [rt]x_g_parameters first to fill out the current state, and only change
547 * the fields that need to be changed. Upon return, the actual device
548 * operating parameters and state will be returned. Note that hardware
549 * limitations may prevent the actual settings from matching the requested
550 * settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz
551 * was requested. An exception is when the shutdown parameter is true.
552 * The last used operational parameters will be returned, but the actual
553 * state of the hardware be different to minimize power consumption and
554 * processing when shutdown is true.
555 *
556 * @tx_write: Writes codes or pulse width data for transmission.
557 * The semantics are similar to a non-blocking write() call.
558 * @tx_g_parameters: Get the current operating parameters and state of the
559 * the IR transmitter.
560 * @tx_s_parameters: Set the current operating parameters and state of the
561 * the IR transmitter. It is recommended to call
562 * [rt]x_g_parameters first to fill out the current state, and only change
563 * the fields that need to be changed. Upon return, the actual device
564 * operating parameters and state will be returned. Note that hardware
565 * limitations may prevent the actual settings from matching the requested
566 * settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz
567 * was requested. An exception is when the shutdown parameter is true.
568 * The last used operational parameters will be returned, but the actual
569 * state of the hardware be different to minimize power consumption and
570 * processing when shutdown is true.
571 */
Andy Walls1d986ad2009-09-27 17:50:04 -0300572struct v4l2_subdev_ir_ops {
Andy Walls1d986ad2009-09-27 17:50:04 -0300573 /* Receiver */
574 int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count,
575 ssize_t *num);
576
577 int (*rx_g_parameters)(struct v4l2_subdev *sd,
578 struct v4l2_subdev_ir_parameters *params);
579 int (*rx_s_parameters)(struct v4l2_subdev *sd,
580 struct v4l2_subdev_ir_parameters *params);
581
582 /* Transmitter */
583 int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count,
584 ssize_t *num);
585
586 int (*tx_g_parameters)(struct v4l2_subdev *sd,
587 struct v4l2_subdev_ir_parameters *params);
588 int (*tx_s_parameters)(struct v4l2_subdev *sd,
589 struct v4l2_subdev_ir_parameters *params);
590};
591
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300592/**
593 * struct v4l2_subdev_pad_config - Used for storing subdev pad information.
594 *
Baruch Siach1059b682017-01-04 11:47:17 -0200595 * @try_fmt: &struct v4l2_mbus_framefmt
596 * @try_crop: &struct v4l2_rect to be used for crop
597 * @try_compose: &struct v4l2_rect to be used for compose
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300598 *
599 * This structure only needs to be passed to the pad op if the 'which' field
600 * of the main argument is set to %V4L2_SUBDEV_FORMAT_TRY. For
601 * %V4L2_SUBDEV_FORMAT_ACTIVE it is safe to pass %NULL.
Hans Verkuilf7234132015-03-04 01:47:54 -0800602 */
603struct v4l2_subdev_pad_config {
604 struct v4l2_mbus_framefmt try_fmt;
605 struct v4l2_rect try_crop;
606 struct v4l2_rect try_compose;
607};
608
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300609/**
610 * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300611 *
Laurent Pinchart9b02cbb2015-04-24 20:06:31 -0300612 * @init_cfg: initialize the pad config to default values
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300613 * @enum_mbus_code: callback for %VIDIOC_SUBDEV_ENUM_MBUS_CODE ioctl handler
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300614 * code.
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300615 * @enum_frame_size: callback for %VIDIOC_SUBDEV_ENUM_FRAME_SIZE ioctl handler
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300616 * code.
617 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300618 * @enum_frame_interval: callback for %VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL ioctl
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300619 * handler code.
620 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300621 * @get_fmt: callback for %VIDIOC_SUBDEV_G_FMT ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300622 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300623 * @set_fmt: callback for %VIDIOC_SUBDEV_S_FMT ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300624 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300625 * @get_selection: callback for %VIDIOC_SUBDEV_G_SELECTION ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300626 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300627 * @set_selection: callback for %VIDIOC_SUBDEV_S_SELECTION ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300628 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300629 * @get_edid: callback for %VIDIOC_SUBDEV_G_EDID ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300630 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300631 * @set_edid: callback for %VIDIOC_SUBDEV_S_EDID ioctl handler code.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300632 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300633 * @dv_timings_cap: callback for %VIDIOC_SUBDEV_DV_TIMINGS_CAP ioctl handler
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300634 * code.
635 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300636 * @enum_dv_timings: callback for %VIDIOC_SUBDEV_ENUM_DV_TIMINGS ioctl handler
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300637 * code.
638 *
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300639 * @link_validate: used by the media controller code to check if the links
640 * that belongs to a pipeline can be used for stream.
641 *
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300642 * @get_frame_desc: get the current low level media bus frame parameters.
Mauro Carvalho Chehabe44cc202015-08-22 06:34:06 -0300643 *
Mauro Carvalho Chehab1d8955b2015-08-22 06:59:26 -0300644 * @set_frame_desc: set the low level media bus frame parameters, @fd array
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300645 * may be adjusted by the subdev driver to device capabilities.
646 */
Laurent Pincharteb08f352009-12-09 08:39:52 -0300647struct v4l2_subdev_pad_ops {
Laurent Pinchart9b02cbb2015-04-24 20:06:31 -0300648 int (*init_cfg)(struct v4l2_subdev *sd,
649 struct v4l2_subdev_pad_config *cfg);
Hans Verkuilf7234132015-03-04 01:47:54 -0800650 int (*enum_mbus_code)(struct v4l2_subdev *sd,
651 struct v4l2_subdev_pad_config *cfg,
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300652 struct v4l2_subdev_mbus_code_enum *code);
653 int (*enum_frame_size)(struct v4l2_subdev *sd,
Hans Verkuilf7234132015-03-04 01:47:54 -0800654 struct v4l2_subdev_pad_config *cfg,
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300655 struct v4l2_subdev_frame_size_enum *fse);
Laurent Pinchart35c30172010-05-05 11:38:35 -0300656 int (*enum_frame_interval)(struct v4l2_subdev *sd,
Hans Verkuilf7234132015-03-04 01:47:54 -0800657 struct v4l2_subdev_pad_config *cfg,
Laurent Pinchart35c30172010-05-05 11:38:35 -0300658 struct v4l2_subdev_frame_interval_enum *fie);
Hans Verkuilf7234132015-03-04 01:47:54 -0800659 int (*get_fmt)(struct v4l2_subdev *sd,
660 struct v4l2_subdev_pad_config *cfg,
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300661 struct v4l2_subdev_format *format);
Hans Verkuilf7234132015-03-04 01:47:54 -0800662 int (*set_fmt)(struct v4l2_subdev *sd,
663 struct v4l2_subdev_pad_config *cfg,
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300664 struct v4l2_subdev_format *format);
Hans Verkuilf7234132015-03-04 01:47:54 -0800665 int (*get_selection)(struct v4l2_subdev *sd,
666 struct v4l2_subdev_pad_config *cfg,
Sakari Ailusae184cd2011-10-14 14:14:26 -0300667 struct v4l2_subdev_selection *sel);
Hans Verkuilf7234132015-03-04 01:47:54 -0800668 int (*set_selection)(struct v4l2_subdev *sd,
669 struct v4l2_subdev_pad_config *cfg,
Sakari Ailusae184cd2011-10-14 14:14:26 -0300670 struct v4l2_subdev_selection *sel);
Hans Verkuildd519bb2014-03-07 07:18:37 -0300671 int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid);
672 int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid);
Laurent Pinchart0349f6a2014-01-29 10:05:10 -0300673 int (*dv_timings_cap)(struct v4l2_subdev *sd,
674 struct v4l2_dv_timings_cap *cap);
675 int (*enum_dv_timings)(struct v4l2_subdev *sd,
676 struct v4l2_enum_dv_timings *timings);
Sakari Ailus8227c922011-10-10 17:01:25 -0300677#ifdef CONFIG_MEDIA_CONTROLLER
678 int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link,
679 struct v4l2_subdev_format *source_fmt,
680 struct v4l2_subdev_format *sink_fmt);
681#endif /* CONFIG_MEDIA_CONTROLLER */
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300682 int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
683 struct v4l2_mbus_frame_desc *fd);
684 int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
685 struct v4l2_mbus_frame_desc *fd);
Laurent Pincharteb08f352009-12-09 08:39:52 -0300686};
687
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300688/**
689 * struct v4l2_subdev_ops - Subdev operations
690 *
691 * @core: pointer to &struct v4l2_subdev_core_ops. Can be %NULL
692 * @tuner: pointer to &struct v4l2_subdev_tuner_ops. Can be %NULL
693 * @audio: pointer to &struct v4l2_subdev_audio_ops. Can be %NULL
694 * @video: pointer to &struct v4l2_subdev_video_ops. Can be %NULL
695 * @vbi: pointer to &struct v4l2_subdev_vbi_ops. Can be %NULL
696 * @ir: pointer to &struct v4l2_subdev_ir_ops. Can be %NULL
697 * @sensor: pointer to &struct v4l2_subdev_sensor_ops. Can be %NULL
698 * @pad: pointer to &struct v4l2_subdev_pad_ops. Can be %NULL
699 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300700struct v4l2_subdev_ops {
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300701 const struct v4l2_subdev_core_ops *core;
702 const struct v4l2_subdev_tuner_ops *tuner;
703 const struct v4l2_subdev_audio_ops *audio;
704 const struct v4l2_subdev_video_ops *video;
Hans Verkuil32cd5272010-03-14 09:57:30 -0300705 const struct v4l2_subdev_vbi_ops *vbi;
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300706 const struct v4l2_subdev_ir_ops *ir;
707 const struct v4l2_subdev_sensor_ops *sensor;
Laurent Pincharteb08f352009-12-09 08:39:52 -0300708 const struct v4l2_subdev_pad_ops *pad;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300709};
710
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300711/**
712 * struct v4l2_subdev_internal_ops - V4L2 subdev internal ops
Hans Verkuil45f6f842011-01-08 07:15:53 -0300713 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300714 * @registered: called when this subdev is registered. When called the v4l2_dev
Hans Verkuil45f6f842011-01-08 07:15:53 -0300715 * field is set to the correct v4l2_device.
716 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300717 * @unregistered: called when this subdev is unregistered. When called the
Hans Verkuil45f6f842011-01-08 07:15:53 -0300718 * v4l2_dev field is still set to the correct v4l2_device.
Laurent Pinchartf0beea82010-08-01 19:05:09 -0300719 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300720 * @open: called when the subdev device node is opened by an application.
Laurent Pinchartf0beea82010-08-01 19:05:09 -0300721 *
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300722 * @close: called when the subdev device node is closed.
723 *
724 * .. note::
725 * Never call this from drivers, only the v4l2 framework can call
726 * these ops.
Hans Verkuil45f6f842011-01-08 07:15:53 -0300727 */
728struct v4l2_subdev_internal_ops {
729 int (*registered)(struct v4l2_subdev *sd);
730 void (*unregistered)(struct v4l2_subdev *sd);
Laurent Pinchartf0beea82010-08-01 19:05:09 -0300731 int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
732 int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
Hans Verkuil45f6f842011-01-08 07:15:53 -0300733};
734
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300735#define V4L2_SUBDEV_NAME_SIZE 32
736
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300737/* Set this flag if this subdev is a i2c device. */
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300738#define V4L2_SUBDEV_FL_IS_I2C (1U << 0)
Dmitri Belimov85e09212010-03-23 11:23:29 -0300739/* Set this flag if this subdev is a spi device. */
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300740#define V4L2_SUBDEV_FL_IS_SPI (1U << 1)
741/* Set this flag if this subdev needs a device node. */
742#define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2)
Sakari Ailus02adb1c2010-03-03 12:49:38 -0300743/* Set this flag if this subdev generates events. */
744#define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3)
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300745
Guennadi Liakhovetskib1cbab02013-04-18 18:35:27 -0300746struct regulator_bulk_data;
747
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300748/**
749 * struct v4l2_subdev_platform_data - regulators config struct
750 *
751 * @regulators: Optional regulators used to power on/off the subdevice
752 * @num_regulators: Number of regululators
753 * @host_priv: Per-subdevice data, specific for a certain video host device
754 */
Guennadi Liakhovetskib1cbab02013-04-18 18:35:27 -0300755struct v4l2_subdev_platform_data {
Guennadi Liakhovetskib1cbab02013-04-18 18:35:27 -0300756 struct regulator_bulk_data *regulators;
757 int num_regulators;
758
Guennadi Liakhovetskib1cbab02013-04-18 18:35:27 -0300759 void *host_priv;
760};
761
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300762/**
763 * struct v4l2_subdev - describes a V4L2 sub-device
764 *
765 * @entity: pointer to &struct media_entity
766 * @list: List of sub-devices
767 * @owner: The owner is the same as the driver's &struct device owner.
Mauro Carvalho Chehabcb8d67c2016-09-08 18:31:17 -0300768 * @owner_v4l2_dev: true if the &sd->owner matches the owner of @v4l2_dev->dev
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300769 * ownner. Initialized by v4l2_device_register_subdev().
770 * @flags: subdev flags. Can be:
771 * %V4L2_SUBDEV_FL_IS_I2C - Set this flag if this subdev is a i2c device;
772 * %V4L2_SUBDEV_FL_IS_SPI - Set this flag if this subdev is a spi device;
773 * %V4L2_SUBDEV_FL_HAS_DEVNODE - Set this flag if this subdev needs a
774 * device node;
775 * %V4L2_SUBDEV_FL_HAS_EVENTS - Set this flag if this subdev generates
776 * events.
777 *
Mauro Carvalho Chehabcb8d67c2016-09-08 18:31:17 -0300778 * @v4l2_dev: pointer to struct &v4l2_device
779 * @ops: pointer to struct &v4l2_subdev_ops
780 * @internal_ops: pointer to struct &v4l2_subdev_internal_ops.
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300781 * Never call these internal ops from within a driver!
782 * @ctrl_handler: The control handler of this subdev. May be NULL.
783 * @name: Name of the sub-device. Please notice that the name must be unique.
784 * @grp_id: can be used to group similar subdevs. Value is driver-specific
785 * @dev_priv: pointer to private data
786 * @host_priv: pointer to private data used by the device where the subdev
787 * is attached.
788 * @devnode: subdev device node
789 * @dev: pointer to the physical device, if any
Sakari Ailusecdf0cf2016-08-16 06:54:59 -0300790 * @fwnode: The fwnode_handle of the subdev, usually the same as
791 * either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL).
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300792 * @async_list: Links this subdev to a global subdev_list or @notifier->done
793 * list.
794 * @asd: Pointer to respective &struct v4l2_async_subdev.
795 * @notifier: Pointer to the managing notifier.
796 * @pdata: common part of subdevice platform data
797 *
798 * Each instance of a subdev driver should create this struct, either
799 * stand-alone or embedded in a larger struct.
800 *
801 * This structure should be initialized by v4l2_subdev_init() or one of
802 * its variants: v4l2_spi_subdev_init(), v4l2_i2c_subdev_init().
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300803 */
804struct v4l2_subdev {
Laurent Pinchart61f5db52009-12-09 08:40:08 -0300805#if defined(CONFIG_MEDIA_CONTROLLER)
806 struct media_entity entity;
807#endif
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300808 struct list_head list;
809 struct module *owner;
Sakari Ailusb2a06ae2013-12-12 09:36:46 -0300810 bool owner_v4l2_dev;
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300811 u32 flags;
Hans Verkuilb0167602009-02-14 12:00:53 -0300812 struct v4l2_device *v4l2_dev;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300813 const struct v4l2_subdev_ops *ops;
Hans Verkuil45f6f842011-01-08 07:15:53 -0300814 const struct v4l2_subdev_internal_ops *internal_ops;
Hans Verkuil09965172010-08-01 14:32:42 -0300815 struct v4l2_ctrl_handler *ctrl_handler;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300816 char name[V4L2_SUBDEV_NAME_SIZE];
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300817 u32 grp_id;
Laurent Pinchart692d5522010-07-30 17:24:55 -0300818 void *dev_priv;
819 void *host_priv;
Guennadi Liakhovetski3e0ec412011-09-13 08:07:55 -0300820 struct video_device *devnode;
Guennadi Liakhovetski668773b2013-06-10 15:07:35 -0300821 struct device *dev;
Sakari Ailusecdf0cf2016-08-16 06:54:59 -0300822 struct fwnode_handle *fwnode;
Sylwester Nawrockib426b3a2013-07-22 08:01:33 -0300823 struct list_head async_list;
Sylwester Nawrockib426b3a2013-07-22 08:01:33 -0300824 struct v4l2_async_subdev *asd;
Sylwester Nawrockib426b3a2013-07-22 08:01:33 -0300825 struct v4l2_async_notifier *notifier;
Guennadi Liakhovetskib1cbab02013-04-18 18:35:27 -0300826 struct v4l2_subdev_platform_data *pdata;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300827};
828
Kieran Bingham47f910f2017-06-07 06:52:07 -0300829#define media_entity_to_v4l2_subdev(ent) \
830({ \
831 typeof(ent) __me_sd_ent = (ent); \
832 \
833 __me_sd_ent ? \
834 container_of(__me_sd_ent, struct v4l2_subdev, entity) : \
835 NULL; \
836})
837
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300838#define vdev_to_v4l2_subdev(vdev) \
Sakari Ailusc5a766c2012-02-15 22:58:12 -0300839 ((struct v4l2_subdev *)video_get_drvdata(vdev))
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300840
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300841/**
842 * struct v4l2_subdev_fh - Used for storing subdev information per file handle
843 *
844 * @vfh: pointer to struct v4l2_fh
845 * @pad: pointer to v4l2_subdev_pad_config
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300846 */
847struct v4l2_subdev_fh {
848 struct v4l2_fh vfh;
849#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
Hans Verkuilf7234132015-03-04 01:47:54 -0800850 struct v4l2_subdev_pad_config *pad;
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300851#endif
852};
853
854#define to_v4l2_subdev_fh(fh) \
855 container_of(fh, struct v4l2_subdev_fh, vfh)
856
857#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
Sakari Ailus5e6ff7c2012-02-15 22:57:22 -0300858#define __V4L2_SUBDEV_MK_GET_TRY(rtype, fun_name, field_name) \
859 static inline struct rtype * \
Hans Verkuilf7234132015-03-04 01:47:54 -0800860 fun_name(struct v4l2_subdev *sd, \
861 struct v4l2_subdev_pad_config *cfg, \
862 unsigned int pad) \
Sakari Ailus5e6ff7c2012-02-15 22:57:22 -0300863 { \
Hans Verkuilf7234132015-03-04 01:47:54 -0800864 BUG_ON(pad >= sd->entity.num_pads); \
865 return &cfg[pad].field_name; \
Sakari Ailus5e6ff7c2012-02-15 22:57:22 -0300866 }
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300867
Hans Verkuilf7234132015-03-04 01:47:54 -0800868__V4L2_SUBDEV_MK_GET_TRY(v4l2_mbus_framefmt, v4l2_subdev_get_try_format, try_fmt)
869__V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, v4l2_subdev_get_try_crop, try_crop)
870__V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, v4l2_subdev_get_try_compose, try_compose)
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300871#endif
872
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300873extern const struct v4l2_file_operations v4l2_subdev_fops;
874
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300875/**
876 * v4l2_set_subdevdata - Sets V4L2 dev private device data
877 *
878 * @sd: pointer to &struct v4l2_subdev
879 * @p: pointer to the private device data to be stored.
880 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300881static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p)
882{
Laurent Pinchart692d5522010-07-30 17:24:55 -0300883 sd->dev_priv = p;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300884}
885
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300886/**
887 * v4l2_get_subdevdata - Gets V4L2 dev private device data
888 *
889 * @sd: pointer to &struct v4l2_subdev
890 *
891 * Returns the pointer to the private device data to be stored.
892 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300893static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd)
894{
Laurent Pinchart692d5522010-07-30 17:24:55 -0300895 return sd->dev_priv;
896}
897
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300898/**
Mauro Carvalho Chehabe383ce02016-09-22 07:59:03 -0300899 * v4l2_set_subdev_hostdata - Sets V4L2 dev private host data
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300900 *
901 * @sd: pointer to &struct v4l2_subdev
902 * @p: pointer to the private data to be stored.
903 */
Laurent Pinchart692d5522010-07-30 17:24:55 -0300904static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p)
905{
906 sd->host_priv = p;
907}
908
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300909/**
Mauro Carvalho Chehabe383ce02016-09-22 07:59:03 -0300910 * v4l2_get_subdev_hostdata - Gets V4L2 dev private data
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300911 *
912 * @sd: pointer to &struct v4l2_subdev
913 *
914 * Returns the pointer to the private host data to be stored.
915 */
Laurent Pinchart692d5522010-07-30 17:24:55 -0300916static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd)
917{
918 return sd->host_priv;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300919}
920
Sakari Ailus8227c922011-10-10 17:01:25 -0300921#ifdef CONFIG_MEDIA_CONTROLLER
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300922
923/**
924 * v4l2_subdev_link_validate_default - validates a media link
925 *
926 * @sd: pointer to &struct v4l2_subdev
927 * @link: pointer to &struct media_link
928 * @source_fmt: pointer to &struct v4l2_subdev_format
929 * @sink_fmt: pointer to &struct v4l2_subdev_format
930 *
931 * This function ensures that width, height and the media bus pixel
932 * code are equal on both source and sink of the link.
933 */
Sakari Ailus8227c922011-10-10 17:01:25 -0300934int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
935 struct media_link *link,
936 struct v4l2_subdev_format *source_fmt,
937 struct v4l2_subdev_format *sink_fmt);
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300938
939/**
940 * v4l2_subdev_link_validate - validates a media link
941 *
942 * @link: pointer to &struct media_link
943 *
944 * This function calls the subdev's link_validate ops to validate
945 * if a media link is valid for streaming. It also internally
946 * calls v4l2_subdev_link_validate_default() to ensure that
947 * width, height and the media bus pixel code are equal on both
948 * source and sink of the link.
949 */
Sakari Ailus8227c922011-10-10 17:01:25 -0300950int v4l2_subdev_link_validate(struct media_link *link);
Laurent Pinchart9b02cbb2015-04-24 20:06:31 -0300951
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300952/**
953 * v4l2_subdev_alloc_pad_config - Allocates memory for pad config
954 *
955 * @sd: pointer to struct v4l2_subdev
956 */
957struct
958v4l2_subdev_pad_config *v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd);
959
960/**
961 * v4l2_subdev_free_pad_config - Frees memory allocated by
962 * v4l2_subdev_alloc_pad_config().
963 *
964 * @cfg: pointer to &struct v4l2_subdev_pad_config
965 */
Laurent Pinchart9b02cbb2015-04-24 20:06:31 -0300966void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg);
Sakari Ailus8227c922011-10-10 17:01:25 -0300967#endif /* CONFIG_MEDIA_CONTROLLER */
Laurent Pinchart9b02cbb2015-04-24 20:06:31 -0300968
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300969/**
970 * v4l2_subdev_init - initializes the sub-device struct
971 *
972 * @sd: pointer to the &struct v4l2_subdev to be initialized
973 * @ops: pointer to &struct v4l2_subdev_ops.
974 */
Laurent Pinchart3dd5ee02009-12-09 08:38:52 -0300975void v4l2_subdev_init(struct v4l2_subdev *sd,
976 const struct v4l2_subdev_ops *ops);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300977
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300978/*
979 * Call an ops of a v4l2_subdev, doing the right checks against
980 * NULL pointers.
981 *
982 * Example: err = v4l2_subdev_call(sd, video, s_std, norm);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300983 */
984#define v4l2_subdev_call(sd, o, f, args...) \
Arnd Bergmannda48c942017-07-19 15:23:27 -0400985 ({ \
986 int __result; \
987 if (!(sd)) \
988 __result = -ENODEV; \
989 else if (!((sd)->ops->o && (sd)->ops->o->f)) \
990 __result = -ENOIOCTLCMD; \
991 else \
992 __result = (sd)->ops->o->f((sd), ##args); \
993 __result; \
994 })
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300995
Hans Verkuil2180f922013-03-03 20:12:31 -0300996#define v4l2_subdev_has_op(sd, o, f) \
997 ((sd)->ops->o && (sd)->ops->o->f)
998
Mauro Carvalho Chehab21c29de2016-07-20 14:20:26 -0300999/**
1000 * v4l2_subdev_notify_event() - Delivers event notification for subdevice
1001 * @sd: The subdev for which to deliver the event
1002 * @ev: The event to deliver
1003 *
1004 * Will deliver the specified event to all userspace event listeners which are
1005 * subscribed to the v42l subdev event queue as well as to the bridge driver
1006 * using the notify callback. The notification type for the notify callback
1007 * will be %V4L2_DEVICE_NOTIFY_EVENT.
1008 */
Lars-Peter Clausen8ae56402015-06-24 13:50:29 -03001009void v4l2_subdev_notify_event(struct v4l2_subdev *sd,
1010 const struct v4l2_event *ev);
1011
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -03001012#endif