Commit | Line | Data |
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2a1fcdf0 | 1 | /* |
21c29de1 MCC |
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. | |
2a1fcdf0 HV |
15 | */ |
16 | ||
17 | #ifndef _V4L2_SUBDEV_H | |
18 | #define _V4L2_SUBDEV_H | |
19 | ||
29103119 | 20 | #include <linux/types.h> |
333c8b97 | 21 | #include <linux/v4l2-subdev.h> |
61f5db54 | 22 | #include <media/media-entity.h> |
e9e31049 | 23 | #include <media/v4l2-async.h> |
2a1fcdf0 | 24 | #include <media/v4l2-common.h> |
2096a5dc | 25 | #include <media/v4l2-dev.h> |
7cd5a16b | 26 | #include <media/v4l2-fh.h> |
9a74251d | 27 | #include <media/v4l2-mediabus.h> |
2a1fcdf0 | 28 | |
1d986add AW |
29 | /* 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 | ||
17e48468 | 39 | #define V4L2_DEVICE_NOTIFY_EVENT _IOW('v', 2, struct v4l2_event) |
40 | ||
2a1fcdf0 | 41 | struct v4l2_device; |
0996517c | 42 | struct v4l2_ctrl_handler; |
8ae5640f | 43 | struct v4l2_event; |
02adb1cc SA |
44 | struct v4l2_event_subscription; |
45 | struct v4l2_fh; | |
2a1fcdf0 | 46 | struct v4l2_subdev; |
f0beea8f | 47 | struct v4l2_subdev_fh; |
2a1fcdf0 | 48 | struct tuner_setup; |
29103119 | 49 | struct v4l2_mbus_frame_desc; |
2a1fcdf0 | 50 | |
21c29de1 MCC |
51 | /** |
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 | */ | |
78a3b4db | 61 | struct v4l2_decode_vbi_line { |
21c29de1 MCC |
62 | u32 is_second_field; |
63 | u8 *p; | |
64 | u32 line; | |
65 | u32 type; | |
78a3b4db HV |
66 | }; |
67 | ||
21c29de1 MCC |
68 | /* |
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. | |
2a1fcdf0 HV |
95 | */ |
96 | ||
21c29de1 MCC |
97 | /* |
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. | |
2a1fcdf0 | 109 | */ |
78a3b4db | 110 | |
4eb2f557 MCC |
111 | /** |
112 | * enum v4l2_subdev_io_pin_bits - Subdevice external IO pin configuration | |
113 | * bits | |
114 | * | |
115 | * @V4L2_SUBDEV_IO_PIN_DISABLE: disables a pin config. ENABLE assumed. | |
116 | * @V4L2_SUBDEV_IO_PIN_OUTPUT: set it if pin is an output. | |
117 | * @V4L2_SUBDEV_IO_PIN_INPUT: set it if pin is an input. | |
118 | * @V4L2_SUBDEV_IO_PIN_SET_VALUE: to set the output value via | |
4a3fad70 | 119 | * &struct v4l2_subdev_io_pin_config->value. |
4eb2f557 MCC |
120 | * @V4L2_SUBDEV_IO_PIN_ACTIVE_LOW: pin active is bit 0. |
121 | * Otherwise, ACTIVE HIGH is assumed. | |
122 | */ | |
123 | enum v4l2_subdev_io_pin_bits { | |
124 | V4L2_SUBDEV_IO_PIN_DISABLE = 0, | |
125 | V4L2_SUBDEV_IO_PIN_OUTPUT = 1, | |
126 | V4L2_SUBDEV_IO_PIN_INPUT = 2, | |
127 | V4L2_SUBDEV_IO_PIN_SET_VALUE = 3, | |
128 | V4L2_SUBDEV_IO_PIN_ACTIVE_LOW = 4, | |
129 | }; | |
66752f83 | 130 | |
21c29de1 MCC |
131 | /** |
132 | * struct v4l2_subdev_io_pin_config - Subdevice external IO pin configuration | |
133 | * | |
4eb2f557 MCC |
134 | * @flags: bitmask with flags for this pin's config, whose bits are defined by |
135 | * &enum v4l2_subdev_io_pin_bits. | |
21c29de1 MCC |
136 | * @pin: Chip external IO pin to configure |
137 | * @function: Internal signal pad/function to route to IO pin | |
138 | * @value: Initial value for pin - e.g. GPIO output value | |
139 | * @strength: Pin drive strength | |
140 | */ | |
66752f83 | 141 | struct v4l2_subdev_io_pin_config { |
21c29de1 MCC |
142 | u32 flags; |
143 | u8 pin; | |
144 | u8 function; | |
145 | u8 value; | |
146 | u8 strength; | |
66752f83 AW |
147 | }; |
148 | ||
5c662984 | 149 | /** |
783001ad MCC |
150 | * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs |
151 | * | |
3fb558f6 | 152 | * @log_status: callback for VIDIOC_LOG_STATUS() ioctl handler code. |
5c662984 MCC |
153 | * |
154 | * @s_io_pin_config: configure one or more chip I/O pins for chips that | |
155 | * multiplex different internal signal pads out to IO pins. This function | |
156 | * takes a pointer to an array of 'n' pin configuration entries, one for | |
157 | * each pin being configured. This function could be called at times | |
158 | * other than just subdevice initialization. | |
159 | * | |
160 | * @init: initialize the sensor registers to some sort of reasonable default | |
161 | * values. Do not use for new drivers and should be removed in existing | |
162 | * drivers. | |
163 | * | |
164 | * @load_fw: load firmware. | |
165 | * | |
166 | * @reset: generic reset command. The argument selects which subsystems to | |
167 | * reset. Passing 0 will always reset the whole chip. Do not use for new | |
168 | * drivers without discussing this first on the linux-media mailinglist. | |
169 | * There should be no reason normally to reset a device. | |
170 | * | |
171 | * @s_gpio: set GPIO pins. Very simple right now, might need to be extended with | |
172 | * a direction argument if needed. | |
173 | * | |
1d8955b2 MCC |
174 | * @ioctl: called at the end of ioctl() syscall handler at the V4L2 core. |
175 | * used to provide support for private ioctls used on the driver. | |
176 | * | |
177 | * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel, | |
178 | * in order to fix data passed from/to userspace. | |
179 | * | |
3fb558f6 | 180 | * @g_register: callback for VIDIOC_DBG_G_REGISTER() ioctl handler code. |
783001ad | 181 | * |
3fb558f6 | 182 | * @s_register: callback for VIDIOC_DBG_S_REGISTER() ioctl handler code. |
783001ad | 183 | * |
5c662984 MCC |
184 | * @s_power: puts subdevice in power saving mode (on == 0) or normal operation |
185 | * mode (on == 1). | |
186 | * | |
187 | * @interrupt_service_routine: Called by the bridge chip's interrupt service | |
188 | * handler, when an interrupt status has be raised due to this subdev, | |
189 | * so that this subdev can handle the details. It may schedule work to be | |
21c29de1 | 190 | * performed later. It must not sleep. **Called from an IRQ context**. |
1d8955b2 MCC |
191 | * |
192 | * @subscribe_event: used by the drivers to request the control framework that | |
193 | * for it to be warned when the value of a control changes. | |
194 | * | |
195 | * @unsubscribe_event: remove event subscription from the control framework. | |
78a3b4db | 196 | */ |
2a1fcdf0 | 197 | struct v4l2_subdev_core_ops { |
2a1fcdf0 | 198 | int (*log_status)(struct v4l2_subdev *sd); |
66752f83 AW |
199 | int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
200 | struct v4l2_subdev_io_pin_config *pincfg); | |
2a1fcdf0 | 201 | int (*init)(struct v4l2_subdev *sd, u32 val); |
cc26b076 | 202 | int (*load_fw)(struct v4l2_subdev *sd); |
2a1fcdf0 HV |
203 | int (*reset)(struct v4l2_subdev *sd, u32 val); |
204 | int (*s_gpio)(struct v4l2_subdev *sd, u32 val); | |
069b7479 | 205 | long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
ab58a301 HV |
206 | #ifdef CONFIG_COMPAT |
207 | long (*compat_ioctl32)(struct v4l2_subdev *sd, unsigned int cmd, | |
208 | unsigned long arg); | |
209 | #endif | |
2a1fcdf0 | 210 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
aecde8b5 | 211 | int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
977ba3b1 | 212 | int (*s_register)(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg); |
2a1fcdf0 | 213 | #endif |
622b828a | 214 | int (*s_power)(struct v4l2_subdev *sd, int on); |
260e689b AW |
215 | int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
216 | u32 status, bool *handled); | |
02adb1cc SA |
217 | int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
218 | struct v4l2_event_subscription *sub); | |
219 | int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
220 | struct v4l2_event_subscription *sub); | |
2a1fcdf0 HV |
221 | }; |
222 | ||
5c662984 | 223 | /** |
e383ce07 MCC |
224 | * struct v4l2_subdev_tuner_ops - Callbacks used when v4l device was opened |
225 | * in radio mode. | |
5c662984 | 226 | * |
3aab15af HV |
227 | * @standby: puts the tuner in standby mode. It will be woken up |
228 | * automatically the next time it is used. | |
229 | * | |
07bf9355 MCC |
230 | * @s_radio: callback that switches the tuner to radio mode. |
231 | * drivers should explicitly call it when a tuner ops should | |
232 | * operate on radio mode, before being able to handle it. | |
233 | * Used on devices that have both AM/FM radio receiver and TV. | |
91963aae | 234 | * |
3fb558f6 | 235 | * @s_frequency: callback for VIDIOC_S_FREQUENCY() ioctl handler code. |
91963aae | 236 | * |
3fb558f6 | 237 | * @g_frequency: callback for VIDIOC_G_FREQUENCY() ioctl handler code. |
21c29de1 | 238 | * freq->type must be filled in. Normally done by video_ioctl2() |
89cb3ddb | 239 | * or the bridge driver. |
91963aae | 240 | * |
3fb558f6 | 241 | * @enum_freq_bands: callback for VIDIOC_ENUM_FREQ_BANDS() ioctl handler code. |
91963aae | 242 | * |
3fb558f6 | 243 | * @g_tuner: callback for VIDIOC_G_TUNER() ioctl handler code. |
91963aae | 244 | * |
3fb558f6 | 245 | * @s_tuner: callback for VIDIOC_S_TUNER() ioctl handler code. @vt->type must be |
91963aae | 246 | * filled in. Normally done by video_ioctl2 or the |
89cb3ddb | 247 | * bridge driver. |
5c662984 | 248 | * |
3fb558f6 | 249 | * @g_modulator: callback for VIDIOC_G_MODULATOR() ioctl handler code. |
91963aae | 250 | * |
3fb558f6 | 251 | * @s_modulator: callback for VIDIOC_S_MODULATOR() ioctl handler code. |
91963aae | 252 | * |
5c662984 | 253 | * @s_type_addr: sets tuner type and its I2C addr. |
91963aae | 254 | * |
5c662984 | 255 | * @s_config: sets tda9887 specific stuff, like port1, port2 and qss |
07bf9355 MCC |
256 | * |
257 | * .. note:: | |
258 | * | |
4a3fad70 | 259 | * On devices that have both AM/FM and TV, it is up to the driver |
07bf9355 MCC |
260 | * to explicitly call s_radio when the tuner should be switched to |
261 | * radio mode, before handling other &struct v4l2_subdev_tuner_ops | |
262 | * that would require it. An example of such usage is:: | |
263 | * | |
264 | * static void s_frequency(void *priv, const struct v4l2_frequency *f) | |
265 | * { | |
4a3fad70 | 266 | * ... |
07bf9355 MCC |
267 | * if (f.type == V4L2_TUNER_RADIO) |
268 | * v4l2_device_call_all(v4l2_dev, 0, tuner, s_radio); | |
269 | * ... | |
270 | * v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency); | |
271 | * } | |
78a3b4db | 272 | */ |
2a1fcdf0 | 273 | struct v4l2_subdev_tuner_ops { |
3aab15af | 274 | int (*standby)(struct v4l2_subdev *sd); |
2a1fcdf0 | 275 | int (*s_radio)(struct v4l2_subdev *sd); |
b530a447 | 276 | int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq); |
2a1fcdf0 | 277 | int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
c58d1de5 | 278 | int (*enum_freq_bands)(struct v4l2_subdev *sd, struct v4l2_frequency_band *band); |
2a1fcdf0 | 279 | int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
2f73c7c5 | 280 | int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt); |
d6bacea6 | 281 | int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
3f70e1f5 | 282 | int (*s_modulator)(struct v4l2_subdev *sd, const struct v4l2_modulator *vm); |
2a1fcdf0 HV |
283 | int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); |
284 | int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); | |
285 | }; | |
286 | ||
5c662984 MCC |
287 | /** |
288 | * struct v4l2_subdev_audio_ops - Callbacks used for audio-related settings | |
289 | * | |
290 | * @s_clock_freq: set the frequency (in Hz) of the audio clock output. | |
291 | * Used to slave an audio processor to the video decoder, ensuring that | |
292 | * audio and video remain synchronized. Usual values for the frequency | |
293 | * are 48000, 44100 or 32000 Hz. If the frequency is not supported, then | |
294 | * -EINVAL is returned. | |
295 | * | |
296 | * @s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard | |
297 | * way to select I2S clock used by driving digital audio streams at some | |
298 | * board designs. Usual values for the frequency are 1024000 and 2048000. | |
21c29de1 | 299 | * If the frequency is not supported, then %-EINVAL is returned. |
5c662984 MCC |
300 | * |
301 | * @s_routing: used to define the input and/or output pins of an audio chip, | |
302 | * and any additional configuration data. | |
303 | * Never attempt to use user-level input IDs (e.g. Composite, S-Video, | |
304 | * Tuner) at this level. An i2c device shouldn't know about whether an | |
305 | * input pin is connected to a Composite connector, become on another | |
306 | * board or platform it might be connected to something else entirely. | |
307 | * The calling driver is responsible for mapping a user-level input to | |
308 | * the right pins on the i2c device. | |
1d8955b2 MCC |
309 | * |
310 | * @s_stream: used to notify the audio code that stream will start or has | |
311 | * stopped. | |
78a3b4db | 312 | */ |
2a1fcdf0 HV |
313 | struct v4l2_subdev_audio_ops { |
314 | int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
315 | int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
5325b427 | 316 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ccc646b | 317 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
2a1fcdf0 HV |
318 | }; |
319 | ||
bb92895a MCC |
320 | /** |
321 | * enum v4l2_mbus_frame_desc_entry - media bus frame description flags | |
322 | * | |
323 | * @V4L2_MBUS_FRAME_DESC_FL_LEN_MAX: | |
324 | * Indicates that &struct v4l2_mbus_frame_desc_entry->length field | |
325 | * specifies maximum data length. | |
326 | * @V4L2_MBUS_FRAME_DESC_FL_BLOB: | |
327 | * Indicates that the format does not have line offsets, i.e. | |
328 | * the receiver should use 1D DMA. | |
174d6a39 | 329 | */ |
bb92895a MCC |
330 | enum v4l2_mbus_frame_desc_flags { |
331 | V4L2_MBUS_FRAME_DESC_FL_LEN_MAX = BIT(0), | |
332 | V4L2_MBUS_FRAME_DESC_FL_BLOB = BIT(1), | |
333 | }; | |
29103119 SN |
334 | |
335 | /** | |
336 | * struct v4l2_mbus_frame_desc_entry - media bus frame description structure | |
5c662984 | 337 | * |
bb92895a MCC |
338 | * @flags: bitmask flags, as defined by &enum v4l2_mbus_frame_desc_flags. |
339 | * @pixelcode: media bus pixel code, valid if @flags | |
4a3fad70 | 340 | * %FRAME_DESC_FL_BLOB is not set. |
bb92895a MCC |
341 | * @length: number of octets per frame, valid if @flags |
342 | * %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX is set. | |
29103119 SN |
343 | */ |
344 | struct v4l2_mbus_frame_desc_entry { | |
bb92895a | 345 | enum v4l2_mbus_frame_desc_flags flags; |
29103119 SN |
346 | u32 pixelcode; |
347 | u32 length; | |
348 | }; | |
349 | ||
350 | #define V4L2_FRAME_DESC_ENTRY_MAX 4 | |
351 | ||
352 | /** | |
353 | * struct v4l2_mbus_frame_desc - media bus data frame description | |
354 | * @entry: frame descriptors array | |
355 | * @num_entries: number of entries in @entry array | |
356 | */ | |
357 | struct v4l2_mbus_frame_desc { | |
358 | struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX]; | |
359 | unsigned short num_entries; | |
360 | }; | |
361 | ||
5c662984 MCC |
362 | /** |
363 | * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened | |
21c29de1 | 364 | * in video mode. |
b84aeb03 MCC |
365 | * |
366 | * @s_routing: see s_routing in audio_ops, except this version is for video | |
367 | * devices. | |
368 | * | |
369 | * @s_crystal_freq: sets the frequency of the crystal used to generate the | |
370 | * clocks in Hz. An extra flags field allows device specific configuration | |
371 | * regarding clock frequency dividers, etc. If not used, then set flags | |
372 | * to 0. If the frequency is not supported, then -EINVAL is returned. | |
373 | * | |
3fb558f6 | 374 | * @g_std: callback for VIDIOC_G_STD() ioctl handler code. |
914728ab | 375 | * |
3fb558f6 | 376 | * @s_std: callback for VIDIOC_S_STD() ioctl handler code. |
914728ab | 377 | * |
5c662984 MCC |
378 | * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
379 | * video input devices. | |
380 | * | |
381 | * @g_std_output: get current standard for video OUTPUT devices. This is ignored | |
382 | * by video input devices. | |
383 | * | |
3fb558f6 | 384 | * @querystd: callback for VIDIOC_QUERYSTD() ioctl handler code. |
914728ab | 385 | * |
21c29de1 | 386 | * @g_tvnorms: get &v4l2_std_id with all standards supported by the video |
5c662984 MCC |
387 | * CAPTURE device. This is ignored by video output devices. |
388 | * | |
389 | * @g_tvnorms_output: get v4l2_std_id with all standards supported by the video | |
390 | * OUTPUT device. This is ignored by video capture devices. | |
391 | * | |
21c29de1 MCC |
392 | * @g_input_status: get input status. Same as the status field in the |
393 | * &struct &v4l2_input | |
5c662984 | 394 | * |
1d8955b2 MCC |
395 | * @s_stream: used to notify the driver that a video stream will start or has |
396 | * stopped. | |
397 | * | |
ecf37493 | 398 | * @g_pixelaspect: callback to return the pixelaspect ratio. |
914728ab | 399 | * |
3fb558f6 MCC |
400 | * @g_frame_interval: callback for VIDIOC_SUBDEV_G_FRAME_INTERVAL() |
401 | * ioctl handler code. | |
914728ab | 402 | * |
3fb558f6 MCC |
403 | * @s_frame_interval: callback for VIDIOC_SUBDEV_S_FRAME_INTERVAL() |
404 | * ioctl handler code. | |
914728ab MCC |
405 | * |
406 | * @s_dv_timings: Set custom dv timings in the sub device. This is used | |
5c662984 MCC |
407 | * when sub device is capable of setting detailed timing information |
408 | * in the hardware to generate/detect the video signal. | |
409 | * | |
914728ab MCC |
410 | * @g_dv_timings: Get custom dv timings in the sub device. |
411 | * | |
3fb558f6 | 412 | * @query_dv_timings: callback for VIDIOC_QUERY_DV_TIMINGS() ioctl handler code. |
b84aeb03 | 413 | * |
5c662984 MCC |
414 | * @g_mbus_config: get supported mediabus configurations |
415 | * | |
416 | * @s_mbus_config: set a certain mediabus configuration. This operation is added | |
417 | * for compatibility with soc-camera drivers and should not be used by new | |
418 | * software. | |
419 | * | |
420 | * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev | |
421 | * can adjust @size to a lower value and must not write more data to the | |
422 | * buffer starting at @data than the original value of @size. | |
78a3b4db | 423 | */ |
2a1fcdf0 | 424 | struct v4l2_subdev_video_ops { |
5325b427 | 425 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ff4ad81 | 426 | int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
8774bed9 LP |
427 | int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm); |
428 | int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); | |
2a1fcdf0 | 429 | int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
5930ab2b | 430 | int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std); |
1b6f1d96 | 431 | int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
48353863 | 432 | int (*g_tvnorms)(struct v4l2_subdev *sd, v4l2_std_id *std); |
839cf813 | 433 | int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std); |
1b6f1d96 | 434 | int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); |
2a1fcdf0 | 435 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
ecf37493 | 436 | int (*g_pixelaspect)(struct v4l2_subdev *sd, struct v4l2_fract *aspect); |
35c3017a LP |
437 | int (*g_frame_interval)(struct v4l2_subdev *sd, |
438 | struct v4l2_subdev_frame_interval *interval); | |
439 | int (*s_frame_interval)(struct v4l2_subdev *sd, | |
440 | struct v4l2_subdev_frame_interval *interval); | |
b6456c0c MK |
441 | int (*s_dv_timings)(struct v4l2_subdev *sd, |
442 | struct v4l2_dv_timings *timings); | |
443 | int (*g_dv_timings)(struct v4l2_subdev *sd, | |
444 | struct v4l2_dv_timings *timings); | |
5d7758ee HV |
445 | int (*query_dv_timings)(struct v4l2_subdev *sd, |
446 | struct v4l2_dv_timings *timings); | |
91c79530 GL |
447 | int (*g_mbus_config)(struct v4l2_subdev *sd, |
448 | struct v4l2_mbus_config *cfg); | |
449 | int (*s_mbus_config)(struct v4l2_subdev *sd, | |
450 | const struct v4l2_mbus_config *cfg); | |
a375e1df SN |
451 | int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf, |
452 | unsigned int *size); | |
2a1fcdf0 HV |
453 | }; |
454 | ||
5c662984 MCC |
455 | /** |
456 | * struct v4l2_subdev_vbi_ops - Callbacks used when v4l device was opened | |
21c29de1 | 457 | * in video mode via the vbi device node. |
5c662984 MCC |
458 | * |
459 | * @decode_vbi_line: video decoders that support sliced VBI need to implement | |
9ef0b3f3 | 460 | * this ioctl. Field p of the &struct v4l2_decode_vbi_line is set to the |
5c662984 MCC |
461 | * start of the VBI data that was generated by the decoder. The driver |
462 | * then parses the sliced VBI data and sets the other fields in the | |
463 | * struct accordingly. The pointer p is updated to point to the start of | |
464 | * the payload which can be copied verbatim into the data field of the | |
21c29de1 | 465 | * &struct v4l2_sliced_vbi_data. If no valid VBI data was found, then the |
5c662984 MCC |
466 | * type field is set to 0 on return. |
467 | * | |
468 | * @s_vbi_data: used to generate VBI signals on a video signal. | |
21c29de1 MCC |
469 | * &struct v4l2_sliced_vbi_data is filled with the data packets that |
470 | * should be output. Note that if you set the line field to 0, then that | |
471 | * VBI signal is disabled. If no valid VBI data was found, then the type | |
472 | * field is set to 0 on return. | |
5c662984 MCC |
473 | * |
474 | * @g_vbi_data: used to obtain the sliced VBI packet from a readback register. | |
475 | * Not all video decoders support this. If no data is available because | |
21c29de1 | 476 | * the readback register contains invalid or erroneous data %-EIO is |
5c662984 MCC |
477 | * returned. Note that you must fill in the 'id' member and the 'field' |
478 | * member (to determine whether CC data from the first or second field | |
479 | * should be obtained). | |
480 | * | |
3fb558f6 MCC |
481 | * @g_sliced_vbi_cap: callback for VIDIOC_G_SLICED_VBI_CAP() ioctl handler |
482 | * code. | |
e44cc20a | 483 | * |
5c662984 MCC |
484 | * @s_raw_fmt: setup the video encoder/decoder for raw VBI. |
485 | * | |
486 | * @g_sliced_fmt: retrieve the current sliced VBI settings. | |
487 | * | |
488 | * @s_sliced_fmt: setup the sliced VBI settings. | |
32cd527f HV |
489 | */ |
490 | struct v4l2_subdev_vbi_ops { | |
491 | int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); | |
492 | int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data); | |
493 | int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data); | |
494 | int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap); | |
54aefafb HV |
495 | int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt); |
496 | int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
497 | int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
32cd527f HV |
498 | }; |
499 | ||
32536108 GL |
500 | /** |
501 | * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations | |
502 | * @g_skip_top_lines: number of lines at the top of the image to be skipped. | |
503 | * This is needed for some sensors, which always corrupt | |
504 | * several top lines of the output image, or which send their | |
505 | * metadata in them. | |
f80a3ab0 LP |
506 | * @g_skip_frames: number of frames to skip at stream start. This is needed for |
507 | * buggy sensors that generate faulty frames when they are | |
508 | * turned on. | |
32536108 GL |
509 | */ |
510 | struct v4l2_subdev_sensor_ops { | |
511 | int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); | |
f80a3ab0 | 512 | int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames); |
32536108 GL |
513 | }; |
514 | ||
21c29de1 MCC |
515 | /** |
516 | * enum v4l2_subdev_ir_mode- describes the type of IR supported | |
517 | * | |
518 | * @V4L2_SUBDEV_IR_MODE_PULSE_WIDTH: IR uses struct ir_raw_event records | |
1d986add | 519 | */ |
1d986add | 520 | enum v4l2_subdev_ir_mode { |
21c29de1 | 521 | V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, |
1d986add AW |
522 | }; |
523 | ||
21c29de1 MCC |
524 | /** |
525 | * struct v4l2_subdev_ir_parameters - Parameters for IR TX or TX | |
526 | * | |
527 | * @bytes_per_data_element: bytes per data element of data in read or | |
528 | * write call. | |
529 | * @mode: IR mode as defined by &enum v4l2_subdev_ir_mode. | |
530 | * @enable: device is active if true | |
531 | * @interrupt_enable: IR interrupts are enabled if true | |
532 | * @shutdown: if true: set hardware to low/no power, false: normal mode | |
533 | * | |
534 | * @modulation: if true, it uses carrier, if false: baseband | |
535 | * @max_pulse_width: maximum pulse width in ns, valid only for baseband signal | |
536 | * @carrier_freq: carrier frequency in Hz, valid only for modulated signal | |
537 | * @duty_cycle: duty cycle percentage, valid only for modulated signal | |
538 | * @invert_level: invert signal level | |
539 | * | |
540 | * @invert_carrier_sense: Send 0/space as a carrier burst. used only in TX. | |
541 | * | |
542 | * @noise_filter_min_width: min time of a valid pulse, in ns. Used only for RX. | |
543 | * @carrier_range_lower: Lower carrier range, in Hz, valid only for modulated | |
544 | * signal. Used only for RX. | |
545 | * @carrier_range_upper: Upper carrier range, in Hz, valid only for modulated | |
546 | * signal. Used only for RX. | |
547 | * @resolution: The receive resolution, in ns . Used only for RX. | |
548 | */ | |
1d986add | 549 | struct v4l2_subdev_ir_parameters { |
21c29de1 | 550 | unsigned int bytes_per_data_element; |
1d986add AW |
551 | enum v4l2_subdev_ir_mode mode; |
552 | ||
553 | bool enable; | |
554 | bool interrupt_enable; | |
21c29de1 | 555 | bool shutdown; |
1d986add | 556 | |
21c29de1 MCC |
557 | bool modulation; |
558 | u32 max_pulse_width; | |
559 | unsigned int carrier_freq; | |
560 | unsigned int duty_cycle; | |
561 | bool invert_level; | |
5a28d9a3 AW |
562 | |
563 | /* Tx only */ | |
21c29de1 | 564 | bool invert_carrier_sense; |
1d986add AW |
565 | |
566 | /* Rx only */ | |
21c29de1 MCC |
567 | u32 noise_filter_min_width; |
568 | unsigned int carrier_range_lower; | |
569 | unsigned int carrier_range_upper; | |
570 | u32 resolution; | |
1d986add AW |
571 | }; |
572 | ||
21c29de1 MCC |
573 | /** |
574 | * struct v4l2_subdev_ir_ops - operations for IR subdevices | |
575 | * | |
576 | * @rx_read: Reads received codes or pulse width data. | |
577 | * The semantics are similar to a non-blocking read() call. | |
578 | * @rx_g_parameters: Get the current operating parameters and state of the | |
579 | * the IR receiver. | |
580 | * @rx_s_parameters: Set the current operating parameters and state of the | |
581 | * the IR receiver. It is recommended to call | |
582 | * [rt]x_g_parameters first to fill out the current state, and only change | |
583 | * the fields that need to be changed. Upon return, the actual device | |
584 | * operating parameters and state will be returned. Note that hardware | |
585 | * limitations may prevent the actual settings from matching the requested | |
586 | * settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz | |
587 | * was requested. An exception is when the shutdown parameter is true. | |
588 | * The last used operational parameters will be returned, but the actual | |
589 | * state of the hardware be different to minimize power consumption and | |
590 | * processing when shutdown is true. | |
591 | * | |
592 | * @tx_write: Writes codes or pulse width data for transmission. | |
593 | * The semantics are similar to a non-blocking write() call. | |
594 | * @tx_g_parameters: Get the current operating parameters and state of the | |
595 | * the IR transmitter. | |
596 | * @tx_s_parameters: Set the current operating parameters and state of the | |
597 | * the IR transmitter. It is recommended to call | |
598 | * [rt]x_g_parameters first to fill out the current state, and only change | |
599 | * the fields that need to be changed. Upon return, the actual device | |
600 | * operating parameters and state will be returned. Note that hardware | |
601 | * limitations may prevent the actual settings from matching the requested | |
602 | * settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz | |
603 | * was requested. An exception is when the shutdown parameter is true. | |
604 | * The last used operational parameters will be returned, but the actual | |
605 | * state of the hardware be different to minimize power consumption and | |
606 | * processing when shutdown is true. | |
607 | */ | |
1d986add | 608 | struct v4l2_subdev_ir_ops { |
1d986add AW |
609 | /* Receiver */ |
610 | int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
611 | ssize_t *num); | |
612 | ||
613 | int (*rx_g_parameters)(struct v4l2_subdev *sd, | |
614 | struct v4l2_subdev_ir_parameters *params); | |
615 | int (*rx_s_parameters)(struct v4l2_subdev *sd, | |
616 | struct v4l2_subdev_ir_parameters *params); | |
617 | ||
618 | /* Transmitter */ | |
619 | int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
620 | ssize_t *num); | |
621 | ||
622 | int (*tx_g_parameters)(struct v4l2_subdev *sd, | |
623 | struct v4l2_subdev_ir_parameters *params); | |
624 | int (*tx_s_parameters)(struct v4l2_subdev *sd, | |
625 | struct v4l2_subdev_ir_parameters *params); | |
626 | }; | |
627 | ||
21c29de1 MCC |
628 | /** |
629 | * struct v4l2_subdev_pad_config - Used for storing subdev pad information. | |
630 | * | |
1059b687 BS |
631 | * @try_fmt: &struct v4l2_mbus_framefmt |
632 | * @try_crop: &struct v4l2_rect to be used for crop | |
633 | * @try_compose: &struct v4l2_rect to be used for compose | |
21c29de1 MCC |
634 | * |
635 | * This structure only needs to be passed to the pad op if the 'which' field | |
636 | * of the main argument is set to %V4L2_SUBDEV_FORMAT_TRY. For | |
637 | * %V4L2_SUBDEV_FORMAT_ACTIVE it is safe to pass %NULL. | |
f7234138 HV |
638 | */ |
639 | struct v4l2_subdev_pad_config { | |
640 | struct v4l2_mbus_framefmt try_fmt; | |
641 | struct v4l2_rect try_crop; | |
642 | struct v4l2_rect try_compose; | |
643 | }; | |
644 | ||
29103119 SN |
645 | /** |
646 | * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations | |
e44cc20a | 647 | * |
9b02cbb3 | 648 | * @init_cfg: initialize the pad config to default values |
3fb558f6 | 649 | * @enum_mbus_code: callback for VIDIOC_SUBDEV_ENUM_MBUS_CODE() ioctl handler |
e44cc20a | 650 | * code. |
3fb558f6 | 651 | * @enum_frame_size: callback for VIDIOC_SUBDEV_ENUM_FRAME_SIZE() ioctl handler |
e44cc20a MCC |
652 | * code. |
653 | * | |
3fb558f6 | 654 | * @enum_frame_interval: callback for VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL() ioctl |
e44cc20a MCC |
655 | * handler code. |
656 | * | |
3fb558f6 | 657 | * @get_fmt: callback for VIDIOC_SUBDEV_G_FMT() ioctl handler code. |
e44cc20a | 658 | * |
3fb558f6 | 659 | * @set_fmt: callback for VIDIOC_SUBDEV_S_FMT() ioctl handler code. |
e44cc20a | 660 | * |
3fb558f6 | 661 | * @get_selection: callback for VIDIOC_SUBDEV_G_SELECTION() ioctl handler code. |
e44cc20a | 662 | * |
3fb558f6 | 663 | * @set_selection: callback for VIDIOC_SUBDEV_S_SELECTION() ioctl handler code. |
e44cc20a | 664 | * |
3fb558f6 | 665 | * @get_edid: callback for VIDIOC_SUBDEV_G_EDID() ioctl handler code. |
e44cc20a | 666 | * |
3fb558f6 | 667 | * @set_edid: callback for VIDIOC_SUBDEV_S_EDID() ioctl handler code. |
e44cc20a | 668 | * |
3fb558f6 | 669 | * @dv_timings_cap: callback for VIDIOC_SUBDEV_DV_TIMINGS_CAP() ioctl handler |
e44cc20a MCC |
670 | * code. |
671 | * | |
3fb558f6 | 672 | * @enum_dv_timings: callback for VIDIOC_SUBDEV_ENUM_DV_TIMINGS() ioctl handler |
e44cc20a MCC |
673 | * code. |
674 | * | |
1d8955b2 MCC |
675 | * @link_validate: used by the media controller code to check if the links |
676 | * that belongs to a pipeline can be used for stream. | |
677 | * | |
29103119 | 678 | * @get_frame_desc: get the current low level media bus frame parameters. |
e44cc20a | 679 | * |
1d8955b2 | 680 | * @set_frame_desc: set the low level media bus frame parameters, @fd array |
29103119 SN |
681 | * may be adjusted by the subdev driver to device capabilities. |
682 | */ | |
eb08f354 | 683 | struct v4l2_subdev_pad_ops { |
9b02cbb3 LP |
684 | int (*init_cfg)(struct v4l2_subdev *sd, |
685 | struct v4l2_subdev_pad_config *cfg); | |
f7234138 HV |
686 | int (*enum_mbus_code)(struct v4l2_subdev *sd, |
687 | struct v4l2_subdev_pad_config *cfg, | |
333c8b97 LP |
688 | struct v4l2_subdev_mbus_code_enum *code); |
689 | int (*enum_frame_size)(struct v4l2_subdev *sd, | |
f7234138 | 690 | struct v4l2_subdev_pad_config *cfg, |
333c8b97 | 691 | struct v4l2_subdev_frame_size_enum *fse); |
35c3017a | 692 | int (*enum_frame_interval)(struct v4l2_subdev *sd, |
f7234138 | 693 | struct v4l2_subdev_pad_config *cfg, |
35c3017a | 694 | struct v4l2_subdev_frame_interval_enum *fie); |
f7234138 HV |
695 | int (*get_fmt)(struct v4l2_subdev *sd, |
696 | struct v4l2_subdev_pad_config *cfg, | |
333c8b97 | 697 | struct v4l2_subdev_format *format); |
f7234138 HV |
698 | int (*set_fmt)(struct v4l2_subdev *sd, |
699 | struct v4l2_subdev_pad_config *cfg, | |
333c8b97 | 700 | struct v4l2_subdev_format *format); |
f7234138 HV |
701 | int (*get_selection)(struct v4l2_subdev *sd, |
702 | struct v4l2_subdev_pad_config *cfg, | |
ae184cda | 703 | struct v4l2_subdev_selection *sel); |
f7234138 HV |
704 | int (*set_selection)(struct v4l2_subdev *sd, |
705 | struct v4l2_subdev_pad_config *cfg, | |
ae184cda | 706 | struct v4l2_subdev_selection *sel); |
dd519bb3 HV |
707 | int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid); |
708 | int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid); | |
0349f6a5 LP |
709 | int (*dv_timings_cap)(struct v4l2_subdev *sd, |
710 | struct v4l2_dv_timings_cap *cap); | |
711 | int (*enum_dv_timings)(struct v4l2_subdev *sd, | |
712 | struct v4l2_enum_dv_timings *timings); | |
8227c92b SA |
713 | #ifdef CONFIG_MEDIA_CONTROLLER |
714 | int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link, | |
715 | struct v4l2_subdev_format *source_fmt, | |
716 | struct v4l2_subdev_format *sink_fmt); | |
717 | #endif /* CONFIG_MEDIA_CONTROLLER */ | |
29103119 SN |
718 | int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad, |
719 | struct v4l2_mbus_frame_desc *fd); | |
720 | int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad, | |
721 | struct v4l2_mbus_frame_desc *fd); | |
eb08f354 LP |
722 | }; |
723 | ||
21c29de1 MCC |
724 | /** |
725 | * struct v4l2_subdev_ops - Subdev operations | |
726 | * | |
727 | * @core: pointer to &struct v4l2_subdev_core_ops. Can be %NULL | |
728 | * @tuner: pointer to &struct v4l2_subdev_tuner_ops. Can be %NULL | |
729 | * @audio: pointer to &struct v4l2_subdev_audio_ops. Can be %NULL | |
730 | * @video: pointer to &struct v4l2_subdev_video_ops. Can be %NULL | |
731 | * @vbi: pointer to &struct v4l2_subdev_vbi_ops. Can be %NULL | |
732 | * @ir: pointer to &struct v4l2_subdev_ir_ops. Can be %NULL | |
733 | * @sensor: pointer to &struct v4l2_subdev_sensor_ops. Can be %NULL | |
734 | * @pad: pointer to &struct v4l2_subdev_pad_ops. Can be %NULL | |
735 | */ | |
2a1fcdf0 | 736 | struct v4l2_subdev_ops { |
32536108 GL |
737 | const struct v4l2_subdev_core_ops *core; |
738 | const struct v4l2_subdev_tuner_ops *tuner; | |
739 | const struct v4l2_subdev_audio_ops *audio; | |
740 | const struct v4l2_subdev_video_ops *video; | |
32cd527f | 741 | const struct v4l2_subdev_vbi_ops *vbi; |
32536108 GL |
742 | const struct v4l2_subdev_ir_ops *ir; |
743 | const struct v4l2_subdev_sensor_ops *sensor; | |
eb08f354 | 744 | const struct v4l2_subdev_pad_ops *pad; |
2a1fcdf0 HV |
745 | }; |
746 | ||
21c29de1 MCC |
747 | /** |
748 | * struct v4l2_subdev_internal_ops - V4L2 subdev internal ops | |
45f6f84a | 749 | * |
21c29de1 | 750 | * @registered: called when this subdev is registered. When called the v4l2_dev |
45f6f84a HV |
751 | * field is set to the correct v4l2_device. |
752 | * | |
21c29de1 | 753 | * @unregistered: called when this subdev is unregistered. When called the |
45f6f84a | 754 | * v4l2_dev field is still set to the correct v4l2_device. |
f0beea8f | 755 | * |
21c29de1 | 756 | * @open: called when the subdev device node is opened by an application. |
f0beea8f | 757 | * |
21c29de1 MCC |
758 | * @close: called when the subdev device node is closed. |
759 | * | |
760 | * .. note:: | |
761 | * Never call this from drivers, only the v4l2 framework can call | |
762 | * these ops. | |
45f6f84a HV |
763 | */ |
764 | struct v4l2_subdev_internal_ops { | |
765 | int (*registered)(struct v4l2_subdev *sd); | |
766 | void (*unregistered)(struct v4l2_subdev *sd); | |
f0beea8f LP |
767 | int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
768 | int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); | |
45f6f84a HV |
769 | }; |
770 | ||
2a1fcdf0 HV |
771 | #define V4L2_SUBDEV_NAME_SIZE 32 |
772 | ||
b5b2b7ed | 773 | /* Set this flag if this subdev is a i2c device. */ |
2096a5dc | 774 | #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
85e09219 | 775 | /* Set this flag if this subdev is a spi device. */ |
2096a5dc LP |
776 | #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) |
777 | /* Set this flag if this subdev needs a device node. */ | |
778 | #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) | |
02adb1cc SA |
779 | /* Set this flag if this subdev generates events. */ |
780 | #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) | |
b5b2b7ed | 781 | |
b1cbab05 GL |
782 | struct regulator_bulk_data; |
783 | ||
21c29de1 MCC |
784 | /** |
785 | * struct v4l2_subdev_platform_data - regulators config struct | |
786 | * | |
787 | * @regulators: Optional regulators used to power on/off the subdevice | |
788 | * @num_regulators: Number of regululators | |
789 | * @host_priv: Per-subdevice data, specific for a certain video host device | |
790 | */ | |
b1cbab05 | 791 | struct v4l2_subdev_platform_data { |
b1cbab05 GL |
792 | struct regulator_bulk_data *regulators; |
793 | int num_regulators; | |
794 | ||
b1cbab05 GL |
795 | void *host_priv; |
796 | }; | |
797 | ||
21c29de1 MCC |
798 | /** |
799 | * struct v4l2_subdev - describes a V4L2 sub-device | |
800 | * | |
801 | * @entity: pointer to &struct media_entity | |
802 | * @list: List of sub-devices | |
803 | * @owner: The owner is the same as the driver's &struct device owner. | |
cb8d67cf | 804 | * @owner_v4l2_dev: true if the &sd->owner matches the owner of @v4l2_dev->dev |
0722ef82 | 805 | * owner. Initialized by v4l2_device_register_subdev(). |
21c29de1 MCC |
806 | * @flags: subdev flags. Can be: |
807 | * %V4L2_SUBDEV_FL_IS_I2C - Set this flag if this subdev is a i2c device; | |
808 | * %V4L2_SUBDEV_FL_IS_SPI - Set this flag if this subdev is a spi device; | |
809 | * %V4L2_SUBDEV_FL_HAS_DEVNODE - Set this flag if this subdev needs a | |
810 | * device node; | |
811 | * %V4L2_SUBDEV_FL_HAS_EVENTS - Set this flag if this subdev generates | |
812 | * events. | |
813 | * | |
cb8d67cf MCC |
814 | * @v4l2_dev: pointer to struct &v4l2_device |
815 | * @ops: pointer to struct &v4l2_subdev_ops | |
816 | * @internal_ops: pointer to struct &v4l2_subdev_internal_ops. | |
21c29de1 MCC |
817 | * Never call these internal ops from within a driver! |
818 | * @ctrl_handler: The control handler of this subdev. May be NULL. | |
819 | * @name: Name of the sub-device. Please notice that the name must be unique. | |
820 | * @grp_id: can be used to group similar subdevs. Value is driver-specific | |
821 | * @dev_priv: pointer to private data | |
822 | * @host_priv: pointer to private data used by the device where the subdev | |
823 | * is attached. | |
824 | * @devnode: subdev device node | |
825 | * @dev: pointer to the physical device, if any | |
ecdf0cfe SA |
826 | * @fwnode: The fwnode_handle of the subdev, usually the same as |
827 | * either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL). | |
21c29de1 MCC |
828 | * @async_list: Links this subdev to a global subdev_list or @notifier->done |
829 | * list. | |
830 | * @asd: Pointer to respective &struct v4l2_async_subdev. | |
831 | * @notifier: Pointer to the managing notifier. | |
aef69d54 SA |
832 | * @subdev_notifier: A sub-device notifier implicitly registered for the sub- |
833 | * device using v4l2_device_register_sensor_subdev(). | |
21c29de1 MCC |
834 | * @pdata: common part of subdevice platform data |
835 | * | |
836 | * Each instance of a subdev driver should create this struct, either | |
837 | * stand-alone or embedded in a larger struct. | |
838 | * | |
839 | * This structure should be initialized by v4l2_subdev_init() or one of | |
840 | * its variants: v4l2_spi_subdev_init(), v4l2_i2c_subdev_init(). | |
2a1fcdf0 HV |
841 | */ |
842 | struct v4l2_subdev { | |
61f5db54 LP |
843 | #if defined(CONFIG_MEDIA_CONTROLLER) |
844 | struct media_entity entity; | |
845 | #endif | |
2a1fcdf0 HV |
846 | struct list_head list; |
847 | struct module *owner; | |
b2a06aec | 848 | bool owner_v4l2_dev; |
b5b2b7ed | 849 | u32 flags; |
b0167600 | 850 | struct v4l2_device *v4l2_dev; |
2a1fcdf0 | 851 | const struct v4l2_subdev_ops *ops; |
45f6f84a | 852 | const struct v4l2_subdev_internal_ops *internal_ops; |
0996517c | 853 | struct v4l2_ctrl_handler *ctrl_handler; |
2a1fcdf0 | 854 | char name[V4L2_SUBDEV_NAME_SIZE]; |
2a1fcdf0 | 855 | u32 grp_id; |
692d5522 LP |
856 | void *dev_priv; |
857 | void *host_priv; | |
3e0ec41c | 858 | struct video_device *devnode; |
668773b8 | 859 | struct device *dev; |
ecdf0cfe | 860 | struct fwnode_handle *fwnode; |
b426b3a6 | 861 | struct list_head async_list; |
b426b3a6 | 862 | struct v4l2_async_subdev *asd; |
b426b3a6 | 863 | struct v4l2_async_notifier *notifier; |
aef69d54 | 864 | struct v4l2_async_notifier *subdev_notifier; |
b1cbab05 | 865 | struct v4l2_subdev_platform_data *pdata; |
2a1fcdf0 HV |
866 | }; |
867 | ||
02679876 MCC |
868 | |
869 | /** | |
870 | * media_entity_to_v4l2_subdev - Returns a &struct v4l2_subdev from | |
871 | * the &struct media_entity embedded in it. | |
872 | * | |
873 | * @ent: pointer to &struct media_entity. | |
874 | */ | |
47f910f0 KB |
875 | #define media_entity_to_v4l2_subdev(ent) \ |
876 | ({ \ | |
877 | typeof(ent) __me_sd_ent = (ent); \ | |
878 | \ | |
879 | __me_sd_ent ? \ | |
880 | container_of(__me_sd_ent, struct v4l2_subdev, entity) : \ | |
881 | NULL; \ | |
882 | }) | |
883 | ||
02679876 MCC |
884 | /** |
885 | * vdev_to_v4l2_subdev - Returns a &struct v4l2_subdev from | |
886 | * the &struct video_device embedded on it. | |
887 | * | |
888 | * @vdev: pointer to &struct video_device | |
889 | */ | |
2096a5dc | 890 | #define vdev_to_v4l2_subdev(vdev) \ |
c5a766ce | 891 | ((struct v4l2_subdev *)video_get_drvdata(vdev)) |
2096a5dc | 892 | |
21c29de1 MCC |
893 | /** |
894 | * struct v4l2_subdev_fh - Used for storing subdev information per file handle | |
895 | * | |
02679876 MCC |
896 | * @vfh: pointer to &struct v4l2_fh |
897 | * @pad: pointer to &struct v4l2_subdev_pad_config | |
7cd5a16b SV |
898 | */ |
899 | struct v4l2_subdev_fh { | |
900 | struct v4l2_fh vfh; | |
901 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
f7234138 | 902 | struct v4l2_subdev_pad_config *pad; |
7cd5a16b SV |
903 | #endif |
904 | }; | |
905 | ||
02679876 MCC |
906 | /** |
907 | * to_v4l2_subdev_fh - Returns a &struct v4l2_subdev_fh from | |
908 | * the &struct v4l2_fh embedded on it. | |
909 | * | |
910 | * @fh: pointer to &struct v4l2_fh | |
911 | */ | |
7cd5a16b SV |
912 | #define to_v4l2_subdev_fh(fh) \ |
913 | container_of(fh, struct v4l2_subdev_fh, vfh) | |
914 | ||
915 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
02679876 MCC |
916 | |
917 | /** | |
918 | * v4l2_subdev_get_try_format - ancillary routine to call | |
919 | * &struct v4l2_subdev_pad_config->try_fmt | |
920 | * | |
921 | * @sd: pointer to &struct v4l2_subdev | |
922 | * @cfg: pointer to &struct v4l2_subdev_pad_config array. | |
923 | * @pad: index of the pad in the @cfg array. | |
924 | */ | |
ab9bb73a MCC |
925 | static inline struct v4l2_mbus_framefmt |
926 | *v4l2_subdev_get_try_format(struct v4l2_subdev *sd, | |
927 | struct v4l2_subdev_pad_config *cfg, | |
928 | unsigned int pad) | |
929 | { | |
930 | if (WARN_ON(pad >= sd->entity.num_pads)) | |
931 | pad = 0; | |
932 | return &cfg[pad].try_fmt; | |
933 | } | |
934 | ||
02679876 MCC |
935 | /** |
936 | * v4l2_subdev_get_try_crop - ancillary routine to call | |
937 | * &struct v4l2_subdev_pad_config->try_crop | |
938 | * | |
939 | * @sd: pointer to &struct v4l2_subdev | |
940 | * @cfg: pointer to &struct v4l2_subdev_pad_config array. | |
941 | * @pad: index of the pad in the @cfg array. | |
942 | */ | |
ab9bb73a MCC |
943 | static inline struct v4l2_rect |
944 | *v4l2_subdev_get_try_crop(struct v4l2_subdev *sd, | |
945 | struct v4l2_subdev_pad_config *cfg, | |
946 | unsigned int pad) | |
947 | { | |
948 | if (WARN_ON(pad >= sd->entity.num_pads)) | |
949 | pad = 0; | |
950 | return &cfg[pad].try_crop; | |
951 | } | |
952 | ||
02679876 MCC |
953 | /** |
954 | * v4l2_subdev_get_try_crop - ancillary routine to call | |
955 | * &struct v4l2_subdev_pad_config->try_compose | |
956 | * | |
957 | * @sd: pointer to &struct v4l2_subdev | |
958 | * @cfg: pointer to &struct v4l2_subdev_pad_config array. | |
959 | * @pad: index of the pad in the @cfg array. | |
960 | */ | |
ab9bb73a MCC |
961 | static inline struct v4l2_rect |
962 | *v4l2_subdev_get_try_compose(struct v4l2_subdev *sd, | |
963 | struct v4l2_subdev_pad_config *cfg, | |
964 | unsigned int pad) | |
965 | { | |
966 | if (WARN_ON(pad >= sd->entity.num_pads)) | |
967 | pad = 0; | |
968 | return &cfg[pad].try_compose; | |
969 | } | |
7cd5a16b SV |
970 | #endif |
971 | ||
2096a5dc LP |
972 | extern const struct v4l2_file_operations v4l2_subdev_fops; |
973 | ||
21c29de1 MCC |
974 | /** |
975 | * v4l2_set_subdevdata - Sets V4L2 dev private device data | |
976 | * | |
977 | * @sd: pointer to &struct v4l2_subdev | |
978 | * @p: pointer to the private device data to be stored. | |
979 | */ | |
2a1fcdf0 HV |
980 | static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
981 | { | |
692d5522 | 982 | sd->dev_priv = p; |
2a1fcdf0 HV |
983 | } |
984 | ||
21c29de1 MCC |
985 | /** |
986 | * v4l2_get_subdevdata - Gets V4L2 dev private device data | |
987 | * | |
988 | * @sd: pointer to &struct v4l2_subdev | |
989 | * | |
990 | * Returns the pointer to the private device data to be stored. | |
991 | */ | |
2a1fcdf0 HV |
992 | static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) |
993 | { | |
692d5522 LP |
994 | return sd->dev_priv; |
995 | } | |
996 | ||
21c29de1 | 997 | /** |
e383ce07 | 998 | * v4l2_set_subdev_hostdata - Sets V4L2 dev private host data |
21c29de1 MCC |
999 | * |
1000 | * @sd: pointer to &struct v4l2_subdev | |
1001 | * @p: pointer to the private data to be stored. | |
1002 | */ | |
692d5522 LP |
1003 | static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) |
1004 | { | |
1005 | sd->host_priv = p; | |
1006 | } | |
1007 | ||
21c29de1 | 1008 | /** |
e383ce07 | 1009 | * v4l2_get_subdev_hostdata - Gets V4L2 dev private data |
21c29de1 MCC |
1010 | * |
1011 | * @sd: pointer to &struct v4l2_subdev | |
1012 | * | |
1013 | * Returns the pointer to the private host data to be stored. | |
1014 | */ | |
692d5522 LP |
1015 | static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) |
1016 | { | |
1017 | return sd->host_priv; | |
2a1fcdf0 HV |
1018 | } |
1019 | ||
8227c92b | 1020 | #ifdef CONFIG_MEDIA_CONTROLLER |
21c29de1 MCC |
1021 | |
1022 | /** | |
1023 | * v4l2_subdev_link_validate_default - validates a media link | |
1024 | * | |
1025 | * @sd: pointer to &struct v4l2_subdev | |
1026 | * @link: pointer to &struct media_link | |
1027 | * @source_fmt: pointer to &struct v4l2_subdev_format | |
1028 | * @sink_fmt: pointer to &struct v4l2_subdev_format | |
1029 | * | |
1030 | * This function ensures that width, height and the media bus pixel | |
1031 | * code are equal on both source and sink of the link. | |
1032 | */ | |
8227c92b SA |
1033 | int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, |
1034 | struct media_link *link, | |
1035 | struct v4l2_subdev_format *source_fmt, | |
1036 | struct v4l2_subdev_format *sink_fmt); | |
21c29de1 MCC |
1037 | |
1038 | /** | |
1039 | * v4l2_subdev_link_validate - validates a media link | |
1040 | * | |
1041 | * @link: pointer to &struct media_link | |
1042 | * | |
1043 | * This function calls the subdev's link_validate ops to validate | |
1044 | * if a media link is valid for streaming. It also internally | |
1045 | * calls v4l2_subdev_link_validate_default() to ensure that | |
1046 | * width, height and the media bus pixel code are equal on both | |
1047 | * source and sink of the link. | |
1048 | */ | |
8227c92b | 1049 | int v4l2_subdev_link_validate(struct media_link *link); |
9b02cbb3 | 1050 | |
21c29de1 MCC |
1051 | /** |
1052 | * v4l2_subdev_alloc_pad_config - Allocates memory for pad config | |
1053 | * | |
1054 | * @sd: pointer to struct v4l2_subdev | |
1055 | */ | |
1056 | struct | |
1057 | v4l2_subdev_pad_config *v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd); | |
1058 | ||
1059 | /** | |
1060 | * v4l2_subdev_free_pad_config - Frees memory allocated by | |
1061 | * v4l2_subdev_alloc_pad_config(). | |
1062 | * | |
1063 | * @cfg: pointer to &struct v4l2_subdev_pad_config | |
1064 | */ | |
9b02cbb3 | 1065 | void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg); |
8227c92b | 1066 | #endif /* CONFIG_MEDIA_CONTROLLER */ |
9b02cbb3 | 1067 | |
21c29de1 MCC |
1068 | /** |
1069 | * v4l2_subdev_init - initializes the sub-device struct | |
1070 | * | |
1071 | * @sd: pointer to the &struct v4l2_subdev to be initialized | |
1072 | * @ops: pointer to &struct v4l2_subdev_ops. | |
1073 | */ | |
3dd5ee08 LP |
1074 | void v4l2_subdev_init(struct v4l2_subdev *sd, |
1075 | const struct v4l2_subdev_ops *ops); | |
2a1fcdf0 | 1076 | |
02679876 MCC |
1077 | /** |
1078 | * v4l2_subdev_call - call an operation of a v4l2_subdev. | |
1079 | * | |
1080 | * @sd: pointer to the &struct v4l2_subdev | |
1081 | * @o: name of the element at &struct v4l2_subdev_ops that contains @f. | |
1082 | * Each element there groups a set of callbacks functions. | |
1083 | * @f: callback function that will be called if @cond matches. | |
1084 | * The callback functions are defined in groups, according to | |
1085 | * each element at &struct v4l2_subdev_ops. | |
1086 | * @args...: arguments for @f. | |
21c29de1 MCC |
1087 | * |
1088 | * Example: err = v4l2_subdev_call(sd, video, s_std, norm); | |
2a1fcdf0 HV |
1089 | */ |
1090 | #define v4l2_subdev_call(sd, o, f, args...) \ | |
da48c948 AB |
1091 | ({ \ |
1092 | int __result; \ | |
1093 | if (!(sd)) \ | |
1094 | __result = -ENODEV; \ | |
1095 | else if (!((sd)->ops->o && (sd)->ops->o->f)) \ | |
1096 | __result = -ENOIOCTLCMD; \ | |
1097 | else \ | |
1098 | __result = (sd)->ops->o->f((sd), ##args); \ | |
1099 | __result; \ | |
1100 | }) | |
2a1fcdf0 | 1101 | |
02679876 MCC |
1102 | /** |
1103 | * v4l2_subdev_has_op - Checks if a subdev defines a certain operation. | |
1104 | * | |
1105 | * @sd: pointer to the &struct v4l2_subdev | |
1106 | * @o: The group of callback functions in &struct v4l2_subdev_ops | |
1107 | * which @f is a part of. | |
1108 | * @f: callback function to be checked for its existence. | |
1109 | */ | |
2180f92d HV |
1110 | #define v4l2_subdev_has_op(sd, o, f) \ |
1111 | ((sd)->ops->o && (sd)->ops->o->f) | |
1112 | ||
21c29de1 MCC |
1113 | /** |
1114 | * v4l2_subdev_notify_event() - Delivers event notification for subdevice | |
1115 | * @sd: The subdev for which to deliver the event | |
1116 | * @ev: The event to deliver | |
1117 | * | |
1118 | * Will deliver the specified event to all userspace event listeners which are | |
1119 | * subscribed to the v42l subdev event queue as well as to the bridge driver | |
1120 | * using the notify callback. The notification type for the notify callback | |
1121 | * will be %V4L2_DEVICE_NOTIFY_EVENT. | |
1122 | */ | |
8ae5640f LPC |
1123 | void v4l2_subdev_notify_event(struct v4l2_subdev *sd, |
1124 | const struct v4l2_event *ev); | |
1125 | ||
2a1fcdf0 | 1126 | #endif |