2 V4L2 sub-device support header.
4 Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
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.
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.
16 You should have received a copy of the GNU General Public License
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #ifndef _V4L2_SUBDEV_H
22 #define _V4L2_SUBDEV_H
24 #include <linux/types.h>
25 #include <linux/v4l2-subdev.h>
26 #include <media/media-entity.h>
27 #include <media/v4l2-async.h>
28 #include <media/v4l2-common.h>
29 #include <media/v4l2-dev.h>
30 #include <media/v4l2-fh.h>
31 #include <media/v4l2-mediabus.h>
33 /* 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
40 #define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32)
41 #define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001
43 #define V4L2_DEVICE_NOTIFY_EVENT _IOW('v', 2, struct v4l2_event)
46 struct v4l2_ctrl_handler;
48 struct v4l2_event_subscription;
51 struct v4l2_subdev_fh;
53 struct v4l2_mbus_frame_desc;
56 struct v4l2_decode_vbi_line {
57 u32 is_second_field; /* Set to 0 for the first (odd) field,
58 set to 1 for the second (even) field. */
59 u8 *p; /* Pointer to the sliced VBI data from the decoder.
60 On exit points to the start of the payload. */
61 u32 line; /* Line number of the sliced VBI data (1-23) */
62 u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
65 /* Sub-devices are devices that are connected somehow to the main bridge
66 device. These devices are usually audio/video muxers/encoders/decoders or
67 sensors and webcam controllers.
69 Usually these devices are controlled through an i2c bus, but other busses
72 The v4l2_subdev struct provides a way of accessing these devices in a
73 generic manner. Most operations that these sub-devices support fall in
74 a few categories: core ops, audio ops, video ops and tuner ops.
76 More categories can be added if needed, although this should remain a
77 limited set (no more than approx. 8 categories).
79 Each category has its own set of ops that subdev drivers can implement.
81 A subdev driver can leave the pointer to the category ops NULL if
82 it does not implement them (e.g. an audio subdev will generally not
83 implement the video category ops). The exception is the core category:
84 this must always be present.
86 These ops are all used internally so it is no problem to change, remove
87 or add ops or move ops from one to another category. Currently these
88 ops are based on the original ioctls, but since ops are not limited to
89 one argument there is room for improvement here once all i2c subdev
90 drivers are converted to use these ops.
93 /* Core ops: it is highly recommended to implement at least these ops:
99 This provides basic debugging support.
101 The ioctl ops is meant for generic ioctl-like commands. Depending on
102 the use-case it might be better to use subdev-specific ops (currently
103 not yet implemented) since ops provide proper type-checking.
106 /* Subdevice external IO pin configuration */
107 #define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */
108 #define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1)
109 #define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2)
110 #define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */
111 #define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */
113 struct v4l2_subdev_io_pin_config {
114 u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */
115 u8 pin; /* Chip external IO pin to configure */
116 u8 function; /* Internal signal pad/function to route to IO pin */
117 u8 value; /* Initial value for pin - e.g. GPIO output value */
118 u8 strength; /* Pin drive strength */
121 #define V4L2_SYNC_EVENT_FOCUS_POS (1 << 0)
122 #define V4L2_SYNC_EVENT_IRIS_POS (1 << 1)
125 * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs
127 * @log_status: callback for VIDIOC_LOG_STATUS ioctl handler code.
129 * @s_io_pin_config: configure one or more chip I/O pins for chips that
130 * multiplex different internal signal pads out to IO pins. This function
131 * takes a pointer to an array of 'n' pin configuration entries, one for
132 * each pin being configured. This function could be called at times
133 * other than just subdevice initialization.
135 * @init: initialize the sensor registers to some sort of reasonable default
136 * values. Do not use for new drivers and should be removed in existing
139 * @load_fw: load firmware.
141 * @reset: generic reset command. The argument selects which subsystems to
142 * reset. Passing 0 will always reset the whole chip. Do not use for new
143 * drivers without discussing this first on the linux-media mailinglist.
144 * There should be no reason normally to reset a device.
146 * @s_gpio: set GPIO pins. Very simple right now, might need to be extended with
147 * a direction argument if needed.
149 * @queryctrl: callback for VIDIOC_QUERYCTL ioctl handler code.
151 * @g_ctrl: callback for VIDIOC_G_CTRL ioctl handler code.
153 * @s_ctrl: callback for VIDIOC_S_CTRL ioctl handler code.
155 * @g_ext_ctrls: callback for VIDIOC_G_EXT_CTRLS ioctl handler code.
157 * @s_ext_ctrls: callback for VIDIOC_S_EXT_CTRLS ioctl handler code.
159 * @try_ext_ctrls: callback for VIDIOC_TRY_EXT_CTRLS ioctl handler code.
161 * @querymenu: callback for VIDIOC_QUERYMENU ioctl handler code.
163 * @ioctl: called at the end of ioctl() syscall handler at the V4L2 core.
164 * used to provide support for private ioctls used on the driver.
166 * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel,
167 * in order to fix data passed from/to userspace.
169 * @g_register: callback for VIDIOC_G_REGISTER ioctl handler code.
171 * @s_register: callback for VIDIOC_G_REGISTER ioctl handler code.
173 * @s_power: puts subdevice in power saving mode (on == 0) or normal operation
176 * @interrupt_service_routine: Called by the bridge chip's interrupt service
177 * handler, when an interrupt status has be raised due to this subdev,
178 * so that this subdev can handle the details. It may schedule work to be
179 * performed later. It must not sleep. *Called from an IRQ context*.
181 * @subscribe_event: used by the drivers to request the control framework that
182 * for it to be warned when the value of a control changes.
184 * @unsubscribe_event: remove event subscription from the control framework.
186 * @sync: some sub devices can only make certain changes at certain times.
187 * For example, a sensor can change the focus only during the blanking period.
188 * This callback can be used to perform these changes when a certain event occurs.
189 * A master device (usually the bridge driver) will call this callback with the
190 * event(s) that occurred and the sub device checks the event mask for the event(s)
191 * on which they have to synchronize their pending changes.
193 struct v4l2_subdev_core_ops {
194 int (*log_status)(struct v4l2_subdev *sd);
195 int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n,
196 struct v4l2_subdev_io_pin_config *pincfg);
197 int (*init)(struct v4l2_subdev *sd, u32 val);
198 int (*load_fw)(struct v4l2_subdev *sd);
199 int (*reset)(struct v4l2_subdev *sd, u32 val);
200 int (*s_gpio)(struct v4l2_subdev *sd, u32 val);
201 int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
202 int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
203 int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
204 int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
205 int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
206 int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
207 int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
208 long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
210 long (*compat_ioctl32)(struct v4l2_subdev *sd, unsigned int cmd,
213 #ifdef CONFIG_VIDEO_ADV_DEBUG
214 int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
215 int (*s_register)(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg);
217 int (*s_power)(struct v4l2_subdev *sd, int on);
218 int (*interrupt_service_routine)(struct v4l2_subdev *sd,
219 u32 status, bool *handled);
220 int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
221 struct v4l2_event_subscription *sub);
222 int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
223 struct v4l2_event_subscription *sub);
224 int (*sync)(struct v4l2_subdev *sd, unsigned int sync_events);
228 * struct s_radio - Callbacks used when v4l device was opened in radio mode.
230 * @s_radio: callback for VIDIOC_S_RADIO ioctl handler code.
232 * @s_frequency: callback for VIDIOC_S_FREQUENCY ioctl handler code.
234 * @g_frequency: callback for VIDIOC_G_FREQUENCY ioctl handler code.
235 * freq->type must be filled in. Normally done by video_ioctl2
236 * or the bridge driver.
238 * @enum_freq_bands: callback for VIDIOC_ENUM_FREQ_BANDS ioctl handler code.
240 * @g_tuner: callback for VIDIOC_G_TUNER ioctl handler code.
242 * @s_tuner: callback for VIDIOC_S_TUNER ioctl handler code. vt->type must be
243 * filled in. Normally done by video_ioctl2 or the
246 * @g_modulator: callback for VIDIOC_G_MODULATOR ioctl handler code.
248 * @s_modulator: callback for VIDIOC_S_MODULATOR ioctl handler code.
250 * @s_type_addr: sets tuner type and its I2C addr.
252 * @s_config: sets tda9887 specific stuff, like port1, port2 and qss
254 struct v4l2_subdev_tuner_ops {
255 int (*s_radio)(struct v4l2_subdev *sd);
256 int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq);
257 int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq);
258 int (*enum_freq_bands)(struct v4l2_subdev *sd, struct v4l2_frequency_band *band);
259 int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt);
260 int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt);
261 int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm);
262 int (*s_modulator)(struct v4l2_subdev *sd, const struct v4l2_modulator *vm);
263 int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type);
264 int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config);
268 * struct v4l2_subdev_audio_ops - Callbacks used for audio-related settings
270 * @s_clock_freq: set the frequency (in Hz) of the audio clock output.
271 * Used to slave an audio processor to the video decoder, ensuring that
272 * audio and video remain synchronized. Usual values for the frequency
273 * are 48000, 44100 or 32000 Hz. If the frequency is not supported, then
274 * -EINVAL is returned.
276 * @s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard
277 * way to select I2S clock used by driving digital audio streams at some
278 * board designs. Usual values for the frequency are 1024000 and 2048000.
279 * If the frequency is not supported, then -EINVAL is returned.
281 * @s_routing: used to define the input and/or output pins of an audio chip,
282 * and any additional configuration data.
283 * Never attempt to use user-level input IDs (e.g. Composite, S-Video,
284 * Tuner) at this level. An i2c device shouldn't know about whether an
285 * input pin is connected to a Composite connector, become on another
286 * board or platform it might be connected to something else entirely.
287 * The calling driver is responsible for mapping a user-level input to
288 * the right pins on the i2c device.
290 * @s_stream: used to notify the audio code that stream will start or has
293 struct v4l2_subdev_audio_ops {
294 int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
295 int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq);
296 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
297 int (*s_stream)(struct v4l2_subdev *sd, int enable);
300 /* Indicates the @length field specifies maximum data length. */
301 #define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX (1U << 0)
303 * Indicates that the format does not have line offsets, i.e. the
304 * receiver should use 1D DMA.
306 #define V4L2_MBUS_FRAME_DESC_FL_BLOB (1U << 1)
309 * struct v4l2_mbus_frame_desc_entry - media bus frame description structure
311 * @flags: V4L2_MBUS_FRAME_DESC_FL_* flags
312 * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
313 * @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
316 struct v4l2_mbus_frame_desc_entry {
322 #define V4L2_FRAME_DESC_ENTRY_MAX 4
325 * struct v4l2_mbus_frame_desc - media bus data frame description
326 * @entry: frame descriptors array
327 * @num_entries: number of entries in @entry array
329 struct v4l2_mbus_frame_desc {
330 struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX];
331 unsigned short num_entries;
335 * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened
338 * @s_routing: see s_routing in audio_ops, except this version is for video
341 * @s_crystal_freq: sets the frequency of the crystal used to generate the
342 * clocks in Hz. An extra flags field allows device specific configuration
343 * regarding clock frequency dividers, etc. If not used, then set flags
344 * to 0. If the frequency is not supported, then -EINVAL is returned.
346 * @g_std: callback for VIDIOC_G_STD ioctl handler code.
348 * @s_std: callback for VIDIOC_S_STD ioctl handler code.
350 * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
351 * video input devices.
353 * @g_std_output: get current standard for video OUTPUT devices. This is ignored
354 * by video input devices.
356 * @querystd: callback for VIDIOC_QUERYSTD ioctl handler code.
358 * @g_tvnorms: get v4l2_std_id with all standards supported by the video
359 * CAPTURE device. This is ignored by video output devices.
361 * @g_tvnorms_output: get v4l2_std_id with all standards supported by the video
362 * OUTPUT device. This is ignored by video capture devices.
364 * @g_input_status: get input status. Same as the status field in the v4l2_input
367 * @s_stream: used to notify the driver that a video stream will start or has
370 * @cropcap: callback for VIDIOC_CROPCAP ioctl handler code.
372 * @g_crop: callback for VIDIOC_G_CROP ioctl handler code.
374 * @s_crop: callback for VIDIOC_S_CROP ioctl handler code.
376 * @g_parm: callback for VIDIOC_G_PARM ioctl handler code.
378 * @s_parm: callback for VIDIOC_S_PARM ioctl handler code.
380 * @g_frame_interval: callback for VIDIOC_G_FRAMEINTERVAL ioctl handler code.
382 * @s_frame_interval: callback for VIDIOC_S_FRAMEINTERVAL ioctl handler code.
384 * @s_dv_timings: Set custom dv timings in the sub device. This is used
385 * when sub device is capable of setting detailed timing information
386 * in the hardware to generate/detect the video signal.
388 * @g_dv_timings: Get custom dv timings in the sub device.
390 * @query_dv_timings: callback for VIDIOC_QUERY_DV_TIMINGS ioctl handler code.
392 * @g_mbus_config: get supported mediabus configurations
394 * @s_mbus_config: set a certain mediabus configuration. This operation is added
395 * for compatibility with soc-camera drivers and should not be used by new
398 * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev
399 * can adjust @size to a lower value and must not write more data to the
400 * buffer starting at @data than the original value of @size.
402 struct v4l2_subdev_video_ops {
403 int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
404 int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags);
405 int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm);
406 int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
407 int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std);
408 int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
409 int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std);
410 int (*g_tvnorms)(struct v4l2_subdev *sd, v4l2_std_id *std);
411 int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
412 int (*g_input_status)(struct v4l2_subdev *sd, u32 *status);
413 int (*s_stream)(struct v4l2_subdev *sd, int enable);
414 int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc);
415 int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop);
416 int (*s_crop)(struct v4l2_subdev *sd, const struct v4l2_crop *crop);
417 int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
418 int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
419 int (*g_frame_interval)(struct v4l2_subdev *sd,
420 struct v4l2_subdev_frame_interval *interval);
421 int (*s_frame_interval)(struct v4l2_subdev *sd,
422 struct v4l2_subdev_frame_interval *interval);
423 int (*s_dv_timings)(struct v4l2_subdev *sd,
424 struct v4l2_dv_timings *timings);
425 int (*g_dv_timings)(struct v4l2_subdev *sd,
426 struct v4l2_dv_timings *timings);
427 int (*query_dv_timings)(struct v4l2_subdev *sd,
428 struct v4l2_dv_timings *timings);
429 int (*g_mbus_config)(struct v4l2_subdev *sd,
430 struct v4l2_mbus_config *cfg);
431 int (*s_mbus_config)(struct v4l2_subdev *sd,
432 const struct v4l2_mbus_config *cfg);
433 int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf,
438 * struct v4l2_subdev_vbi_ops - Callbacks used when v4l device was opened
439 * in video mode via the vbi device node.
441 * @decode_vbi_line: video decoders that support sliced VBI need to implement
442 * this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the
443 * start of the VBI data that was generated by the decoder. The driver
444 * then parses the sliced VBI data and sets the other fields in the
445 * struct accordingly. The pointer p is updated to point to the start of
446 * the payload which can be copied verbatim into the data field of the
447 * v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the
448 * type field is set to 0 on return.
450 * @s_vbi_data: used to generate VBI signals on a video signal.
451 * v4l2_sliced_vbi_data is filled with the data packets that should be
452 * output. Note that if you set the line field to 0, then that VBI signal
453 * is disabled. If no valid VBI data was found, then the type field is
454 * set to 0 on return.
456 * @g_vbi_data: used to obtain the sliced VBI packet from a readback register.
457 * Not all video decoders support this. If no data is available because
458 * the readback register contains invalid or erroneous data -EIO is
459 * returned. Note that you must fill in the 'id' member and the 'field'
460 * member (to determine whether CC data from the first or second field
461 * should be obtained).
463 * @g_sliced_vbi_cap: callback for VIDIOC_SLICED_VBI_CAP ioctl handler code.
465 * @s_raw_fmt: setup the video encoder/decoder for raw VBI.
467 * @g_sliced_fmt: retrieve the current sliced VBI settings.
469 * @s_sliced_fmt: setup the sliced VBI settings.
471 struct v4l2_subdev_vbi_ops {
472 int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line);
473 int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data);
474 int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data);
475 int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap);
476 int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt);
477 int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
478 int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt);
482 * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations
483 * @g_skip_top_lines: number of lines at the top of the image to be skipped.
484 * This is needed for some sensors, which always corrupt
485 * several top lines of the output image, or which send their
487 * @g_skip_frames: number of frames to skip at stream start. This is needed for
488 * buggy sensors that generate faulty frames when they are
491 struct v4l2_subdev_sensor_ops {
492 int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines);
493 int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames);
497 [rt]x_g_parameters: Get the current operating parameters and state of the
498 the IR receiver or transmitter.
500 [rt]x_s_parameters: Set the current operating parameters and state of the
501 the IR receiver or transmitter. It is recommended to call
502 [rt]x_g_parameters first to fill out the current state, and only change
503 the fields that need to be changed. Upon return, the actual device
504 operating parameters and state will be returned. Note that hardware
505 limitations may prevent the actual settings from matching the requested
506 settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz
507 was requested. An exception is when the shutdown parameter is true.
508 The last used operational parameters will be returned, but the actual
509 state of the hardware be different to minimize power consumption and
510 processing when shutdown is true.
512 rx_read: Reads received codes or pulse width data.
513 The semantics are similar to a non-blocking read() call.
515 tx_write: Writes codes or pulse width data for transmission.
516 The semantics are similar to a non-blocking write() call.
519 enum v4l2_subdev_ir_mode {
520 V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */
523 struct v4l2_subdev_ir_parameters {
524 /* Either Rx or Tx */
525 unsigned int bytes_per_data_element; /* of data in read or write call */
526 enum v4l2_subdev_ir_mode mode;
529 bool interrupt_enable;
530 bool shutdown; /* true: set hardware to low/no power, false: normal */
532 bool modulation; /* true: uses carrier, false: baseband */
533 u32 max_pulse_width; /* ns, valid only for baseband signal */
534 unsigned int carrier_freq; /* Hz, valid only for modulated signal*/
535 unsigned int duty_cycle; /* percent, valid only for modulated signal*/
536 bool invert_level; /* invert signal level */
539 bool invert_carrier_sense; /* Send 0/space as a carrier burst */
542 u32 noise_filter_min_width; /* ns, min time of a valid pulse */
543 unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */
544 unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */
545 u32 resolution; /* ns */
548 struct v4l2_subdev_ir_ops {
550 int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count,
553 int (*rx_g_parameters)(struct v4l2_subdev *sd,
554 struct v4l2_subdev_ir_parameters *params);
555 int (*rx_s_parameters)(struct v4l2_subdev *sd,
556 struct v4l2_subdev_ir_parameters *params);
559 int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count,
562 int (*tx_g_parameters)(struct v4l2_subdev *sd,
563 struct v4l2_subdev_ir_parameters *params);
564 int (*tx_s_parameters)(struct v4l2_subdev *sd,
565 struct v4l2_subdev_ir_parameters *params);
569 * Used for storing subdev pad information. This structure only needs
570 * to be passed to the pad op if the 'which' field of the main argument
571 * is set to V4L2_SUBDEV_FORMAT_TRY. For V4L2_SUBDEV_FORMAT_ACTIVE it is
574 struct v4l2_subdev_pad_config {
575 struct v4l2_mbus_framefmt try_fmt;
576 struct v4l2_rect try_crop;
577 struct v4l2_rect try_compose;
581 * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
583 * @enum_mbus_code: callback for VIDIOC_SUBDEV_ENUM_MBUS_CODE ioctl handler
585 * @enum_frame_size: callback for VIDIOC_SUBDEV_ENUM_FRAME_SIZE ioctl handler
588 * @enum_frame_interval: callback for VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL ioctl
591 * @get_fmt: callback for VIDIOC_SUBDEV_G_FMT ioctl handler code.
593 * @set_fmt: callback for VIDIOC_SUBDEV_S_FMT ioctl handler code.
595 * @get_selection: callback for VIDIOC_SUBDEV_G_SELECTION ioctl handler code.
597 * @set_selection: callback for VIDIOC_SUBDEV_S_SELECTION ioctl handler code.
599 * @get_edid: callback for VIDIOC_SUBDEV_G_EDID ioctl handler code.
601 * @set_edid: callback for VIDIOC_SUBDEV_S_EDID ioctl handler code.
603 * @dv_timings_cap: callback for VIDIOC_SUBDEV_DV_TIMINGS_CAP ioctl handler
606 * @enum_dv_timings: callback for VIDIOC_SUBDEV_ENUM_DV_TIMINGS ioctl handler
609 * @link_validate: used by the media controller code to check if the links
610 * that belongs to a pipeline can be used for stream.
612 * @get_frame_desc: get the current low level media bus frame parameters.
614 * @set_frame_desc: set the low level media bus frame parameters, @fd array
615 * may be adjusted by the subdev driver to device capabilities.
617 struct v4l2_subdev_pad_ops {
618 int (*enum_mbus_code)(struct v4l2_subdev *sd,
619 struct v4l2_subdev_pad_config *cfg,
620 struct v4l2_subdev_mbus_code_enum *code);
621 int (*enum_frame_size)(struct v4l2_subdev *sd,
622 struct v4l2_subdev_pad_config *cfg,
623 struct v4l2_subdev_frame_size_enum *fse);
624 int (*enum_frame_interval)(struct v4l2_subdev *sd,
625 struct v4l2_subdev_pad_config *cfg,
626 struct v4l2_subdev_frame_interval_enum *fie);
627 int (*get_fmt)(struct v4l2_subdev *sd,
628 struct v4l2_subdev_pad_config *cfg,
629 struct v4l2_subdev_format *format);
630 int (*set_fmt)(struct v4l2_subdev *sd,
631 struct v4l2_subdev_pad_config *cfg,
632 struct v4l2_subdev_format *format);
633 int (*get_selection)(struct v4l2_subdev *sd,
634 struct v4l2_subdev_pad_config *cfg,
635 struct v4l2_subdev_selection *sel);
636 int (*set_selection)(struct v4l2_subdev *sd,
637 struct v4l2_subdev_pad_config *cfg,
638 struct v4l2_subdev_selection *sel);
639 int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid);
640 int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid);
641 int (*dv_timings_cap)(struct v4l2_subdev *sd,
642 struct v4l2_dv_timings_cap *cap);
643 int (*enum_dv_timings)(struct v4l2_subdev *sd,
644 struct v4l2_enum_dv_timings *timings);
645 #ifdef CONFIG_MEDIA_CONTROLLER
646 int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link,
647 struct v4l2_subdev_format *source_fmt,
648 struct v4l2_subdev_format *sink_fmt);
649 #endif /* CONFIG_MEDIA_CONTROLLER */
650 int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
651 struct v4l2_mbus_frame_desc *fd);
652 int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
653 struct v4l2_mbus_frame_desc *fd);
656 struct v4l2_subdev_ops {
657 const struct v4l2_subdev_core_ops *core;
658 const struct v4l2_subdev_tuner_ops *tuner;
659 const struct v4l2_subdev_audio_ops *audio;
660 const struct v4l2_subdev_video_ops *video;
661 const struct v4l2_subdev_vbi_ops *vbi;
662 const struct v4l2_subdev_ir_ops *ir;
663 const struct v4l2_subdev_sensor_ops *sensor;
664 const struct v4l2_subdev_pad_ops *pad;
668 * Internal ops. Never call this from drivers, only the v4l2 framework can call
671 * registered: called when this subdev is registered. When called the v4l2_dev
672 * field is set to the correct v4l2_device.
674 * unregistered: called when this subdev is unregistered. When called the
675 * v4l2_dev field is still set to the correct v4l2_device.
677 * open: called when the subdev device node is opened by an application.
679 * close: called when the subdev device node is closed.
681 struct v4l2_subdev_internal_ops {
682 int (*registered)(struct v4l2_subdev *sd);
683 void (*unregistered)(struct v4l2_subdev *sd);
684 int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
685 int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
688 #define V4L2_SUBDEV_NAME_SIZE 32
690 /* Set this flag if this subdev is a i2c device. */
691 #define V4L2_SUBDEV_FL_IS_I2C (1U << 0)
692 /* Set this flag if this subdev is a spi device. */
693 #define V4L2_SUBDEV_FL_IS_SPI (1U << 1)
694 /* Set this flag if this subdev needs a device node. */
695 #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2)
696 /* Set this flag if this subdev generates events. */
697 #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3)
699 struct regulator_bulk_data;
701 struct v4l2_subdev_platform_data {
702 /* Optional regulators uset to power on/off the subdevice */
703 struct regulator_bulk_data *regulators;
706 /* Per-subdevice data, specific for a certain video host device */
710 /* Each instance of a subdev driver should create this struct, either
711 stand-alone or embedded in a larger struct.
714 #if defined(CONFIG_MEDIA_CONTROLLER)
715 struct media_entity entity;
717 struct list_head list;
718 struct module *owner;
721 struct v4l2_device *v4l2_dev;
722 const struct v4l2_subdev_ops *ops;
723 /* Never call these internal ops from within a driver! */
724 const struct v4l2_subdev_internal_ops *internal_ops;
725 /* The control handler of this subdev. May be NULL. */
726 struct v4l2_ctrl_handler *ctrl_handler;
727 /* name must be unique */
728 char name[V4L2_SUBDEV_NAME_SIZE];
729 /* can be used to group similar subdevs, value is driver-specific */
731 /* pointer to private data */
734 /* subdev device node */
735 struct video_device *devnode;
736 /* pointer to the physical device, if any */
738 /* The device_node of the subdev, usually the same as dev->of_node. */
739 struct device_node *of_node;
740 /* Links this subdev to a global subdev_list or @notifier->done list. */
741 struct list_head async_list;
742 /* Pointer to respective struct v4l2_async_subdev. */
743 struct v4l2_async_subdev *asd;
744 /* Pointer to the managing notifier. */
745 struct v4l2_async_notifier *notifier;
746 /* common part of subdevice platform data */
747 struct v4l2_subdev_platform_data *pdata;
750 #define media_entity_to_v4l2_subdev(ent) \
751 container_of(ent, struct v4l2_subdev, entity)
752 #define vdev_to_v4l2_subdev(vdev) \
753 ((struct v4l2_subdev *)video_get_drvdata(vdev))
756 * Used for storing subdev information per file handle
758 struct v4l2_subdev_fh {
760 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
761 struct v4l2_subdev_pad_config *pad;
765 #define to_v4l2_subdev_fh(fh) \
766 container_of(fh, struct v4l2_subdev_fh, vfh)
768 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
769 #define __V4L2_SUBDEV_MK_GET_TRY(rtype, fun_name, field_name) \
770 static inline struct rtype * \
771 fun_name(struct v4l2_subdev *sd, \
772 struct v4l2_subdev_pad_config *cfg, \
775 BUG_ON(pad >= sd->entity.num_pads); \
776 return &cfg[pad].field_name; \
779 __V4L2_SUBDEV_MK_GET_TRY(v4l2_mbus_framefmt, v4l2_subdev_get_try_format, try_fmt)
780 __V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, v4l2_subdev_get_try_crop, try_crop)
781 __V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, v4l2_subdev_get_try_compose, try_compose)
784 extern const struct v4l2_file_operations v4l2_subdev_fops;
786 static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p)
791 static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd)
796 static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p)
801 static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd)
803 return sd->host_priv;
806 #ifdef CONFIG_MEDIA_CONTROLLER
807 int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
808 struct media_link *link,
809 struct v4l2_subdev_format *source_fmt,
810 struct v4l2_subdev_format *sink_fmt);
811 int v4l2_subdev_link_validate(struct media_link *link);
812 #endif /* CONFIG_MEDIA_CONTROLLER */
813 void v4l2_subdev_init(struct v4l2_subdev *sd,
814 const struct v4l2_subdev_ops *ops);
816 /* Call an ops of a v4l2_subdev, doing the right checks against
819 Example: err = v4l2_subdev_call(sd, video, s_std, norm);
821 #define v4l2_subdev_call(sd, o, f, args...) \
822 (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \
823 (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD))
825 #define v4l2_subdev_has_op(sd, o, f) \
826 ((sd)->ops->o && (sd)->ops->o->f)
828 void v4l2_subdev_notify_event(struct v4l2_subdev *sd,
829 const struct v4l2_event *ev);