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Hans Verkuil2a1fcdf2008-11-29 21:36:58 -03001/*
2 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.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#ifndef _V4L2_SUBDEV_H
22#define _V4L2_SUBDEV_H
23
Sylwester Nawrocki29103112012-05-17 14:33:30 -030024#include <linux/types.h>
Laurent Pinchart333c8b92010-03-15 20:26:04 -030025#include <linux/v4l2-subdev.h>
Laurent Pinchart61f5db52009-12-09 08:40:08 -030026#include <media/media-entity.h>
Guennadi Liakhovetskie9e31042013-01-08 07:06:31 -030027#include <media/v4l2-async.h>
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030028#include <media/v4l2-common.h>
Laurent Pinchart2096a5d2009-12-09 08:38:49 -030029#include <media/v4l2-dev.h>
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -030030#include <media/v4l2-fh.h>
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -030031#include <media/v4l2-mediabus.h>
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030032
Andy Walls1d986ad2009-09-27 17:50:04 -030033/* generic v4l2_device notify callback notification values */
34#define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32)
35#define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001
36#define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002
37#define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004
38#define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008
39
40#define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32)
41#define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001
42
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030043struct v4l2_device;
Hans Verkuil09965172010-08-01 14:32:42 -030044struct v4l2_ctrl_handler;
Sakari Ailus02adb1c2010-03-03 12:49:38 -030045struct v4l2_event_subscription;
46struct v4l2_fh;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030047struct v4l2_subdev;
Laurent Pinchartf0beea82010-08-01 19:05:09 -030048struct v4l2_subdev_fh;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030049struct tuner_setup;
Sylwester Nawrocki29103112012-05-17 14:33:30 -030050struct v4l2_mbus_frame_desc;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030051
Hans Verkuil78a3b4d2009-04-01 03:41:09 -030052/* decode_vbi_line */
53struct v4l2_decode_vbi_line {
54 u32 is_second_field; /* Set to 0 for the first (odd) field,
55 set to 1 for the second (even) field. */
56 u8 *p; /* Pointer to the sliced VBI data from the decoder.
57 On exit points to the start of the payload. */
58 u32 line; /* Line number of the sliced VBI data (1-23) */
59 u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
60};
61
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030062/* Sub-devices are devices that are connected somehow to the main bridge
63 device. These devices are usually audio/video muxers/encoders/decoders or
64 sensors and webcam controllers.
65
66 Usually these devices are controlled through an i2c bus, but other busses
67 may also be used.
68
69 The v4l2_subdev struct provides a way of accessing these devices in a
70 generic manner. Most operations that these sub-devices support fall in
71 a few categories: core ops, audio ops, video ops and tuner ops.
72
73 More categories can be added if needed, although this should remain a
74 limited set (no more than approx. 8 categories).
75
76 Each category has its own set of ops that subdev drivers can implement.
77
78 A subdev driver can leave the pointer to the category ops NULL if
79 it does not implement them (e.g. an audio subdev will generally not
80 implement the video category ops). The exception is the core category:
81 this must always be present.
82
83 These ops are all used internally so it is no problem to change, remove
84 or add ops or move ops from one to another category. Currently these
85 ops are based on the original ioctls, but since ops are not limited to
86 one argument there is room for improvement here once all i2c subdev
87 drivers are converted to use these ops.
88 */
89
90/* Core ops: it is highly recommended to implement at least these ops:
91
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -030092 log_status
93 g_register
94 s_register
95
96 This provides basic debugging support.
97
98 The ioctl ops is meant for generic ioctl-like commands. Depending on
99 the use-case it might be better to use subdev-specific ops (currently
100 not yet implemented) since ops provide proper type-checking.
101 */
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300102
Andy Walls66752f82010-07-18 18:51:10 -0300103/* Subdevice external IO pin configuration */
104#define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */
105#define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1)
106#define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2)
107#define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */
108#define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */
109
110struct v4l2_subdev_io_pin_config {
111 u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */
112 u8 pin; /* Chip external IO pin to configure */
113 u8 function; /* Internal signal pad/function to route to IO pin */
114 u8 value; /* Initial value for pin - e.g. GPIO output value */
115 u8 strength; /* Pin drive strength */
116};
117
Hans Verkuil3c7c9372011-01-08 07:08:02 -0300118/*
Andy Walls66752f82010-07-18 18:51:10 -0300119 s_io_pin_config: configure one or more chip I/O pins for chips that
120 multiplex different internal signal pads out to IO pins. This function
121 takes a pointer to an array of 'n' pin configuration entries, one for
122 each pin being configured. This function could be called at times
123 other than just subdevice initialization.
124
Michael Jones9d380ad2012-07-26 10:48:25 -0300125 init: initialize the sensor registers to some sort of reasonable default
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300126 values. Do not use for new drivers and should be removed in existing
127 drivers.
128
Hans Verkuilcc26b072009-03-29 19:20:26 -0300129 load_fw: load firmware.
130
131 reset: generic reset command. The argument selects which subsystems to
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300132 reset. Passing 0 will always reset the whole chip. Do not use for new
133 drivers without discussing this first on the linux-media mailinglist.
134 There should be no reason normally to reset a device.
135
136 s_gpio: set GPIO pins. Very simple right now, might need to be extended with
137 a direction argument if needed.
Laurent Pinchart622b8282009-10-05 10:48:17 -0300138
139 s_power: puts subdevice in power saving mode (on == 0) or normal operation
140 mode (on == 1).
Andy Walls260e689b2010-07-18 20:54:52 -0300141
142 interrupt_service_routine: Called by the bridge chip's interrupt service
143 handler, when an interrupt status has be raised due to this subdev,
144 so that this subdev can handle the details. It may schedule work to be
145 performed later. It must not sleep. *Called from an IRQ context*.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300146 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300147struct v4l2_subdev_core_ops {
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300148 int (*log_status)(struct v4l2_subdev *sd);
Andy Walls66752f82010-07-18 18:51:10 -0300149 int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n,
150 struct v4l2_subdev_io_pin_config *pincfg);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300151 int (*init)(struct v4l2_subdev *sd, u32 val);
Hans Verkuilcc26b072009-03-29 19:20:26 -0300152 int (*load_fw)(struct v4l2_subdev *sd);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300153 int (*reset)(struct v4l2_subdev *sd, u32 val);
154 int (*s_gpio)(struct v4l2_subdev *sd, u32 val);
155 int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
156 int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
157 int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
Hans Verkuil952617f2009-01-12 18:17:14 -0300158 int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
159 int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
160 int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300161 int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
Guennadi Liakhovetski1a99b972011-09-09 13:10:02 -0300162 int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm);
Hans Verkuilf41737e2009-04-01 03:52:39 -0300163 int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
Hans Verkuil069b7472008-12-30 07:04:34 -0300164 long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300165#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300166 int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
Hans Verkuil977ba3b2013-03-24 08:28:46 -0300167 int (*s_register)(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300168#endif
Laurent Pinchart622b8282009-10-05 10:48:17 -0300169 int (*s_power)(struct v4l2_subdev *sd, int on);
Andy Walls260e689b2010-07-18 20:54:52 -0300170 int (*interrupt_service_routine)(struct v4l2_subdev *sd,
171 u32 status, bool *handled);
Sakari Ailus02adb1c2010-03-03 12:49:38 -0300172 int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
173 struct v4l2_event_subscription *sub);
174 int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
175 struct v4l2_event_subscription *sub);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300176};
177
Hans Verkuile206fc52011-06-13 09:34:56 -0300178/* s_radio: v4l device was opened in radio mode.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300179
Hans Verkuil338e9e12011-06-13 09:35:56 -0300180 g_frequency: freq->type must be filled in. Normally done by video_ioctl2
181 or the bridge driver.
182
183 g_tuner:
184 s_tuner: vt->type must be filled in. Normally done by video_ioctl2 or the
185 bridge driver.
186
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300187 s_type_addr: sets tuner type and its I2C addr.
188
189 s_config: sets tda9887 specific stuff, like port1, port2 and qss
190 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300191struct v4l2_subdev_tuner_ops {
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300192 int (*s_radio)(struct v4l2_subdev *sd);
Hans Verkuilb530a442013-03-19 04:09:26 -0300193 int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300194 int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq);
195 int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt);
Hans Verkuil2f73c7c2013-03-15 06:10:06 -0300196 int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt);
Eduardo Valentind6bacea2009-08-08 08:34:18 -0300197 int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm);
Hans Verkuil3f70e1f52012-09-04 12:08:47 -0300198 int (*s_modulator)(struct v4l2_subdev *sd, const struct v4l2_modulator *vm);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300199 int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type);
200 int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config);
201};
202
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300203/* s_clock_freq: set the frequency (in Hz) of the audio clock output.
204 Used to slave an audio processor to the video decoder, ensuring that
205 audio and video remain synchronized. Usual values for the frequency
206 are 48000, 44100 or 32000 Hz. If the frequency is not supported, then
207 -EINVAL is returned.
208
209 s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard
210 way to select I2S clock used by driving digital audio streams at some
211 board designs. Usual values for the frequency are 1024000 and 2048000.
212 If the frequency is not supported, then -EINVAL is returned.
213
Hans Verkuil5325b422009-04-02 11:26:22 -0300214 s_routing: used to define the input and/or output pins of an audio chip,
215 and any additional configuration data.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300216 Never attempt to use user-level input IDs (e.g. Composite, S-Video,
217 Tuner) at this level. An i2c device shouldn't know about whether an
218 input pin is connected to a Composite connector, become on another
219 board or platform it might be connected to something else entirely.
220 The calling driver is responsible for mapping a user-level input to
221 the right pins on the i2c device.
222 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300223struct v4l2_subdev_audio_ops {
224 int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
225 int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
Hans Verkuil5325b422009-04-02 11:26:22 -0300226 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
Andy Walls3ccc6462009-12-24 13:06:08 -0300227 int (*s_stream)(struct v4l2_subdev *sd, int enable);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300228};
229
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300230/* Indicates the @length field specifies maximum data length. */
231#define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX (1U << 0)
232/* Indicates user defined data format, i.e. non standard frame format. */
233#define V4L2_MBUS_FRAME_DESC_FL_BLOB (1U << 1)
234
235/**
236 * struct v4l2_mbus_frame_desc_entry - media bus frame description structure
237 * @flags: V4L2_MBUS_FRAME_DESC_FL_* flags
238 * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
239 * @length: number of octets per frame, valid for compressed or unspecified
240 * formats
241 */
242struct v4l2_mbus_frame_desc_entry {
243 u16 flags;
244 u32 pixelcode;
245 u32 length;
246};
247
248#define V4L2_FRAME_DESC_ENTRY_MAX 4
249
250/**
251 * struct v4l2_mbus_frame_desc - media bus data frame description
252 * @entry: frame descriptors array
253 * @num_entries: number of entries in @entry array
254 */
255struct v4l2_mbus_frame_desc {
256 struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX];
257 unsigned short num_entries;
258};
259
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300260/*
Hans Verkuilcc26b072009-03-29 19:20:26 -0300261 s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300262 video input devices.
263
Tomasz Stanislawski5930ab22011-06-29 07:16:15 -0300264 g_std_output: get current standard for video OUTPUT devices. This is ignored
265 by video input devices.
266
Tomasz Stanislawski839cf812011-03-02 13:16:37 -0300267 g_tvnorms_output: get v4l2_std_id with all standards supported by video
268 OUTPUT device. This is ignored by video input devices.
269
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -0300270 s_crystal_freq: sets the frequency of the crystal used to generate the
Hans Verkuil3ff4ad82009-04-01 03:15:52 -0300271 clocks in Hz. An extra flags field allows device specific configuration
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300272 regarding clock frequency dividers, etc. If not used, then set flags
273 to 0. If the frequency is not supported, then -EINVAL is returned.
274
Hans Verkuilcc26b072009-03-29 19:20:26 -0300275 g_input_status: get input status. Same as the status field in the v4l2_input
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300276 struct.
277
Hans Verkuilcc26b072009-03-29 19:20:26 -0300278 s_routing: see s_routing in audio_ops, except this version is for video
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300279 devices.
Muralidharan Karicherib6456c02009-11-19 12:00:31 -0300280
Muralidharan Karicherib6456c02009-11-19 12:00:31 -0300281 s_dv_timings(): Set custom dv timings in the sub device. This is used
282 when sub device is capable of setting detailed timing information
283 in the hardware to generate/detect the video signal.
284
285 g_dv_timings(): Get custom dv timings in the sub device.
286
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -0300287 enum_mbus_fmt: enumerate pixel formats, provided by a video data source
288
289 g_mbus_fmt: get the current pixel format, provided by a video data source
290
291 try_mbus_fmt: try to set a pixel format on a video data source
292
293 s_mbus_fmt: set a pixel format on a video data source
Guennadi Liakhovetski91c79532011-07-01 14:31:17 -0300294
295 g_mbus_config: get supported mediabus configurations
296
297 s_mbus_config: set a certain mediabus configuration. This operation is added
298 for compatibility with soc-camera drivers and should not be used by new
299 software.
Sylwester Nawrockia375e1d2012-09-13 13:08:19 -0300300
301 s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev
302 can adjust @size to a lower value and must not write more data to the
303 buffer starting at @data than the original value of @size.
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300304 */
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300305struct v4l2_subdev_video_ops {
Hans Verkuil5325b422009-04-02 11:26:22 -0300306 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
Hans Verkuil3ff4ad82009-04-01 03:15:52 -0300307 int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300308 int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std);
Tomasz Stanislawski5930ab22011-06-29 07:16:15 -0300309 int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
Hans Verkuil1b6f1d92009-02-13 07:48:21 -0300310 int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std);
Tomasz Stanislawski839cf812011-03-02 13:16:37 -0300311 int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
Hans Verkuil1b6f1d92009-02-13 07:48:21 -0300312 int (*g_input_status)(struct v4l2_subdev *sd, u32 *status);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300313 int (*s_stream)(struct v4l2_subdev *sd, int enable);
Guennadi Liakhovetskib7f2cef2009-06-24 10:31:25 -0300314 int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc);
315 int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop);
Hans Verkuil4f996592012-09-05 05:10:48 -0300316 int (*s_crop)(struct v4l2_subdev *sd, const struct v4l2_crop *crop);
Hans Verkuil2da94792009-02-06 18:59:35 -0300317 int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
318 int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
Laurent Pinchart35c30172010-05-05 11:38:35 -0300319 int (*g_frame_interval)(struct v4l2_subdev *sd,
320 struct v4l2_subdev_frame_interval *interval);
321 int (*s_frame_interval)(struct v4l2_subdev *sd,
322 struct v4l2_subdev_frame_interval *interval);
Hans Verkuil4b2ce112009-03-29 19:23:16 -0300323 int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
324 int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
Muralidharan Karicherib6456c02009-11-19 12:00:31 -0300325 int (*s_dv_timings)(struct v4l2_subdev *sd,
326 struct v4l2_dv_timings *timings);
327 int (*g_dv_timings)(struct v4l2_subdev *sd,
328 struct v4l2_dv_timings *timings);
Hans Verkuil5d7758e2012-05-15 08:06:44 -0300329 int (*enum_dv_timings)(struct v4l2_subdev *sd,
330 struct v4l2_enum_dv_timings *timings);
331 int (*query_dv_timings)(struct v4l2_subdev *sd,
332 struct v4l2_dv_timings *timings);
333 int (*dv_timings_cap)(struct v4l2_subdev *sd,
334 struct v4l2_dv_timings_cap *cap);
Hans Verkuil3805f202010-05-08 17:55:00 -0300335 int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index,
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -0300336 enum v4l2_mbus_pixelcode *code);
Qing Xu03519b72011-01-20 05:19:40 -0300337 int (*enum_mbus_fsizes)(struct v4l2_subdev *sd,
338 struct v4l2_frmsizeenum *fsize);
Guennadi Liakhovetski9a742512009-12-11 11:41:28 -0300339 int (*g_mbus_fmt)(struct v4l2_subdev *sd,
340 struct v4l2_mbus_framefmt *fmt);
341 int (*try_mbus_fmt)(struct v4l2_subdev *sd,
342 struct v4l2_mbus_framefmt *fmt);
343 int (*s_mbus_fmt)(struct v4l2_subdev *sd,
344 struct v4l2_mbus_framefmt *fmt);
Guennadi Liakhovetski91c79532011-07-01 14:31:17 -0300345 int (*g_mbus_config)(struct v4l2_subdev *sd,
346 struct v4l2_mbus_config *cfg);
347 int (*s_mbus_config)(struct v4l2_subdev *sd,
348 const struct v4l2_mbus_config *cfg);
Sylwester Nawrockia375e1d2012-09-13 13:08:19 -0300349 int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf,
350 unsigned int *size);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300351};
352
Hans Verkuil32cd5272010-03-14 09:57:30 -0300353/*
354 decode_vbi_line: video decoders that support sliced VBI need to implement
355 this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the
356 start of the VBI data that was generated by the decoder. The driver
357 then parses the sliced VBI data and sets the other fields in the
358 struct accordingly. The pointer p is updated to point to the start of
359 the payload which can be copied verbatim into the data field of the
360 v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the
361 type field is set to 0 on return.
362
363 s_vbi_data: used to generate VBI signals on a video signal.
364 v4l2_sliced_vbi_data is filled with the data packets that should be
365 output. Note that if you set the line field to 0, then that VBI signal
366 is disabled. If no valid VBI data was found, then the type field is
367 set to 0 on return.
368
369 g_vbi_data: used to obtain the sliced VBI packet from a readback register.
370 Not all video decoders support this. If no data is available because
371 the readback register contains invalid or erroneous data -EIO is
372 returned. Note that you must fill in the 'id' member and the 'field'
373 member (to determine whether CC data from the first or second field
374 should be obtained).
Hans Verkuil54aefaf2010-03-14 10:02:50 -0300375
376 s_raw_fmt: setup the video encoder/decoder for raw VBI.
377
378 g_sliced_fmt: retrieve the current sliced VBI settings.
379
380 s_sliced_fmt: setup the sliced VBI settings.
Hans Verkuil32cd5272010-03-14 09:57:30 -0300381 */
382struct v4l2_subdev_vbi_ops {
383 int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line);
384 int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data);
385 int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data);
386 int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap);
Hans Verkuil54aefaf2010-03-14 10:02:50 -0300387 int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt);
388 int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
389 int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
Hans Verkuil32cd5272010-03-14 09:57:30 -0300390};
391
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300392/**
393 * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations
394 * @g_skip_top_lines: number of lines at the top of the image to be skipped.
395 * This is needed for some sensors, which always corrupt
396 * several top lines of the output image, or which send their
397 * metadata in them.
Laurent Pinchartf80a3ab2010-11-16 01:21:06 -0300398 * @g_skip_frames: number of frames to skip at stream start. This is needed for
399 * buggy sensors that generate faulty frames when they are
400 * turned on.
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300401 */
402struct v4l2_subdev_sensor_ops {
403 int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines);
Laurent Pinchartf80a3ab2010-11-16 01:21:06 -0300404 int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames);
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300405};
406
Andy Walls1d986ad2009-09-27 17:50:04 -0300407/*
Andy Walls1d986ad2009-09-27 17:50:04 -0300408 [rt]x_g_parameters: Get the current operating parameters and state of the
409 the IR receiver or transmitter.
410
411 [rt]x_s_parameters: Set the current operating parameters and state of the
412 the IR receiver or transmitter. It is recommended to call
413 [rt]x_g_parameters first to fill out the current state, and only change
414 the fields that need to be changed. Upon return, the actual device
415 operating parameters and state will be returned. Note that hardware
416 limitations may prevent the actual settings from matching the requested
417 settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz
418 was requested. An exception is when the shutdown parameter is true.
419 The last used operational parameters will be returned, but the actual
420 state of the hardware be different to minimize power consumption and
421 processing when shutdown is true.
422
423 rx_read: Reads received codes or pulse width data.
424 The semantics are similar to a non-blocking read() call.
425
426 tx_write: Writes codes or pulse width data for transmission.
427 The semantics are similar to a non-blocking write() call.
428 */
429
430enum v4l2_subdev_ir_mode {
Andy Wallsd69e85b2010-08-01 02:36:20 -0300431 V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */
Andy Walls1d986ad2009-09-27 17:50:04 -0300432};
433
Andy Walls1d986ad2009-09-27 17:50:04 -0300434struct v4l2_subdev_ir_parameters {
435 /* Either Rx or Tx */
436 unsigned int bytes_per_data_element; /* of data in read or write call */
437 enum v4l2_subdev_ir_mode mode;
438
439 bool enable;
440 bool interrupt_enable;
441 bool shutdown; /* true: set hardware to low/no power, false: normal */
442
443 bool modulation; /* true: uses carrier, false: baseband */
444 u32 max_pulse_width; /* ns, valid only for baseband signal */
445 unsigned int carrier_freq; /* Hz, valid only for modulated signal*/
446 unsigned int duty_cycle; /* percent, valid only for modulated signal*/
Andy Walls5a28d9a2010-07-18 19:57:25 -0300447 bool invert_level; /* invert signal level */
448
449 /* Tx only */
450 bool invert_carrier_sense; /* Send 0/space as a carrier burst */
Andy Walls1d986ad2009-09-27 17:50:04 -0300451
452 /* Rx only */
453 u32 noise_filter_min_width; /* ns, min time of a valid pulse */
454 unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */
455 unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */
456 u32 resolution; /* ns */
457};
458
459struct v4l2_subdev_ir_ops {
Andy Walls1d986ad2009-09-27 17:50:04 -0300460 /* Receiver */
461 int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count,
462 ssize_t *num);
463
464 int (*rx_g_parameters)(struct v4l2_subdev *sd,
465 struct v4l2_subdev_ir_parameters *params);
466 int (*rx_s_parameters)(struct v4l2_subdev *sd,
467 struct v4l2_subdev_ir_parameters *params);
468
469 /* Transmitter */
470 int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count,
471 ssize_t *num);
472
473 int (*tx_g_parameters)(struct v4l2_subdev *sd,
474 struct v4l2_subdev_ir_parameters *params);
475 int (*tx_s_parameters)(struct v4l2_subdev *sd,
476 struct v4l2_subdev_ir_parameters *params);
477};
478
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300479/**
480 * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
481 * @get_frame_desc: get the current low level media bus frame parameters.
482 * @get_frame_desc: set the low level media bus frame parameters, @fd array
483 * may be adjusted by the subdev driver to device capabilities.
484 */
Laurent Pincharteb08f352009-12-09 08:39:52 -0300485struct v4l2_subdev_pad_ops {
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300486 int (*enum_mbus_code)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
487 struct v4l2_subdev_mbus_code_enum *code);
488 int (*enum_frame_size)(struct v4l2_subdev *sd,
489 struct v4l2_subdev_fh *fh,
490 struct v4l2_subdev_frame_size_enum *fse);
Laurent Pinchart35c30172010-05-05 11:38:35 -0300491 int (*enum_frame_interval)(struct v4l2_subdev *sd,
492 struct v4l2_subdev_fh *fh,
493 struct v4l2_subdev_frame_interval_enum *fie);
Laurent Pinchart333c8b92010-03-15 20:26:04 -0300494 int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
495 struct v4l2_subdev_format *format);
496 int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
497 struct v4l2_subdev_format *format);
Antti Koskipaaf6a5cb12010-06-23 05:03:42 -0300498 int (*set_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
499 struct v4l2_subdev_crop *crop);
500 int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
501 struct v4l2_subdev_crop *crop);
Sakari Ailusae184cd2011-10-14 14:14:26 -0300502 int (*get_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
503 struct v4l2_subdev_selection *sel);
504 int (*set_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
505 struct v4l2_subdev_selection *sel);
Hans Verkuiled45ce22012-08-10 06:07:12 -0300506 int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid);
507 int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid);
Sakari Ailus8227c922011-10-10 17:01:25 -0300508#ifdef CONFIG_MEDIA_CONTROLLER
509 int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link,
510 struct v4l2_subdev_format *source_fmt,
511 struct v4l2_subdev_format *sink_fmt);
512#endif /* CONFIG_MEDIA_CONTROLLER */
Sylwester Nawrocki29103112012-05-17 14:33:30 -0300513 int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
514 struct v4l2_mbus_frame_desc *fd);
515 int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
516 struct v4l2_mbus_frame_desc *fd);
Laurent Pincharteb08f352009-12-09 08:39:52 -0300517};
518
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300519struct v4l2_subdev_ops {
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300520 const struct v4l2_subdev_core_ops *core;
521 const struct v4l2_subdev_tuner_ops *tuner;
522 const struct v4l2_subdev_audio_ops *audio;
523 const struct v4l2_subdev_video_ops *video;
Hans Verkuil32cd5272010-03-14 09:57:30 -0300524 const struct v4l2_subdev_vbi_ops *vbi;
Guennadi Liakhovetski32536102009-12-11 11:14:46 -0300525 const struct v4l2_subdev_ir_ops *ir;
526 const struct v4l2_subdev_sensor_ops *sensor;
Laurent Pincharteb08f352009-12-09 08:39:52 -0300527 const struct v4l2_subdev_pad_ops *pad;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300528};
529
Hans Verkuil45f6f842011-01-08 07:15:53 -0300530/*
531 * Internal ops. Never call this from drivers, only the v4l2 framework can call
532 * these ops.
533 *
534 * registered: called when this subdev is registered. When called the v4l2_dev
535 * field is set to the correct v4l2_device.
536 *
537 * unregistered: called when this subdev is unregistered. When called the
538 * v4l2_dev field is still set to the correct v4l2_device.
Laurent Pinchartf0beea82010-08-01 19:05:09 -0300539 *
540 * open: called when the subdev device node is opened by an application.
541 *
542 * close: called when the subdev device node is closed.
Hans Verkuil45f6f842011-01-08 07:15:53 -0300543 */
544struct v4l2_subdev_internal_ops {
545 int (*registered)(struct v4l2_subdev *sd);
546 void (*unregistered)(struct v4l2_subdev *sd);
Laurent Pinchartf0beea82010-08-01 19:05:09 -0300547 int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
548 int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
Hans Verkuil45f6f842011-01-08 07:15:53 -0300549};
550
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300551#define V4L2_SUBDEV_NAME_SIZE 32
552
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300553/* Set this flag if this subdev is a i2c device. */
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300554#define V4L2_SUBDEV_FL_IS_I2C (1U << 0)
Dmitri Belimov85e09212010-03-23 11:23:29 -0300555/* Set this flag if this subdev is a spi device. */
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300556#define V4L2_SUBDEV_FL_IS_SPI (1U << 1)
557/* Set this flag if this subdev needs a device node. */
558#define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2)
Sakari Ailus02adb1c2010-03-03 12:49:38 -0300559/* Set this flag if this subdev generates events. */
560#define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3)
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300561
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300562/* Each instance of a subdev driver should create this struct, either
563 stand-alone or embedded in a larger struct.
564 */
565struct v4l2_subdev {
Laurent Pinchart61f5db52009-12-09 08:40:08 -0300566#if defined(CONFIG_MEDIA_CONTROLLER)
567 struct media_entity entity;
568#endif
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300569 struct list_head list;
570 struct module *owner;
Hans Verkuilb5b2b7e2009-05-02 10:58:51 -0300571 u32 flags;
Hans Verkuilb0167602009-02-14 12:00:53 -0300572 struct v4l2_device *v4l2_dev;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300573 const struct v4l2_subdev_ops *ops;
Hans Verkuil45f6f842011-01-08 07:15:53 -0300574 /* Never call these internal ops from within a driver! */
575 const struct v4l2_subdev_internal_ops *internal_ops;
Hans Verkuil09965172010-08-01 14:32:42 -0300576 /* The control handler of this subdev. May be NULL. */
577 struct v4l2_ctrl_handler *ctrl_handler;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300578 /* name must be unique */
579 char name[V4L2_SUBDEV_NAME_SIZE];
580 /* can be used to group similar subdevs, value is driver-specific */
581 u32 grp_id;
582 /* pointer to private data */
Laurent Pinchart692d55222010-07-30 17:24:55 -0300583 void *dev_priv;
584 void *host_priv;
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300585 /* subdev device node */
Guennadi Liakhovetski3e0ec412011-09-13 08:07:55 -0300586 struct video_device *devnode;
Guennadi Liakhovetski668773b2013-06-10 15:07:35 -0300587 /* pointer to the physical device, if any */
588 struct device *dev;
Sylwester Nawrockib426b3a2013-07-22 08:01:33 -0300589 /* Links this subdev to a global subdev_list or @notifier->done list. */
590 struct list_head async_list;
591 /* Pointer to respective struct v4l2_async_subdev. */
592 struct v4l2_async_subdev *asd;
593 /* Pointer to the managing notifier. */
594 struct v4l2_async_notifier *notifier;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300595};
596
Laurent Pinchart61f5db52009-12-09 08:40:08 -0300597#define media_entity_to_v4l2_subdev(ent) \
598 container_of(ent, struct v4l2_subdev, entity)
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300599#define vdev_to_v4l2_subdev(vdev) \
Sakari Ailusc5a766c2012-02-15 22:58:12 -0300600 ((struct v4l2_subdev *)video_get_drvdata(vdev))
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300601
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300602/*
603 * Used for storing subdev information per file handle
604 */
605struct v4l2_subdev_fh {
606 struct v4l2_fh vfh;
607#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
Sakari Ailusae184cd2011-10-14 14:14:26 -0300608 struct {
609 struct v4l2_mbus_framefmt try_fmt;
610 struct v4l2_rect try_crop;
611 struct v4l2_rect try_compose;
612 } *pad;
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300613#endif
614};
615
616#define to_v4l2_subdev_fh(fh) \
617 container_of(fh, struct v4l2_subdev_fh, vfh)
618
619#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
Sakari Ailus5e6ff7c2012-02-15 22:57:22 -0300620#define __V4L2_SUBDEV_MK_GET_TRY(rtype, fun_name, field_name) \
621 static inline struct rtype * \
622 v4l2_subdev_get_try_##fun_name(struct v4l2_subdev_fh *fh, \
623 unsigned int pad) \
624 { \
625 BUG_ON(unlikely(pad >= vdev_to_v4l2_subdev( \
626 fh->vfh.vdev)->entity.num_pads)); \
627 return &fh->pad[pad].field_name; \
628 }
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300629
Sakari Ailus5e6ff7c2012-02-15 22:57:22 -0300630__V4L2_SUBDEV_MK_GET_TRY(v4l2_mbus_framefmt, format, try_fmt)
631__V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, crop, try_compose)
632__V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, compose, try_compose)
Stanimir Varbanov7cd5a162010-05-21 06:04:24 -0300633#endif
634
Laurent Pinchart2096a5d2009-12-09 08:38:49 -0300635extern const struct v4l2_file_operations v4l2_subdev_fops;
636
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300637static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p)
638{
Laurent Pinchart692d55222010-07-30 17:24:55 -0300639 sd->dev_priv = p;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300640}
641
642static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd)
643{
Laurent Pinchart692d55222010-07-30 17:24:55 -0300644 return sd->dev_priv;
645}
646
647static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p)
648{
649 sd->host_priv = p;
650}
651
652static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd)
653{
654 return sd->host_priv;
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300655}
656
Sakari Ailus8227c922011-10-10 17:01:25 -0300657#ifdef CONFIG_MEDIA_CONTROLLER
658int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
659 struct media_link *link,
660 struct v4l2_subdev_format *source_fmt,
661 struct v4l2_subdev_format *sink_fmt);
662int v4l2_subdev_link_validate(struct media_link *link);
663#endif /* CONFIG_MEDIA_CONTROLLER */
Laurent Pinchart3dd5ee02009-12-09 08:38:52 -0300664void v4l2_subdev_init(struct v4l2_subdev *sd,
665 const struct v4l2_subdev_ops *ops);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300666
667/* Call an ops of a v4l2_subdev, doing the right checks against
668 NULL pointers.
669
Hans Verkuilb71c9982013-05-26 10:03:01 -0300670 Example: err = v4l2_subdev_call(sd, core, s_std, norm);
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300671 */
672#define v4l2_subdev_call(sd, o, f, args...) \
Hans Verkuildbc8e342009-06-09 17:34:01 -0300673 (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300674 (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD))
675
Hans Verkuil98ec6332009-03-08 17:02:10 -0300676/* Send a notification to v4l2_device. */
677#define v4l2_subdev_notify(sd, notification, arg) \
678 ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \
679 (sd)->v4l2_dev->notify((sd), (notification), (arg)))
680
Hans Verkuil2180f922013-03-03 20:12:31 -0300681#define v4l2_subdev_has_op(sd, o, f) \
682 ((sd)->ops->o && (sd)->ops->o->f)
683
Hans Verkuil2a1fcdf2008-11-29 21:36:58 -0300684#endif