Root/
1 | /* |
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 | |
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> |
32 | |
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 |
39 | |
40 | #define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32) |
41 | #define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001 |
42 | |
43 | struct v4l2_device; |
44 | struct v4l2_ctrl_handler; |
45 | struct v4l2_event_subscription; |
46 | struct v4l2_fh; |
47 | struct v4l2_subdev; |
48 | struct v4l2_subdev_fh; |
49 | struct tuner_setup; |
50 | struct v4l2_mbus_frame_desc; |
51 | |
52 | /* decode_vbi_line */ |
53 | struct 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 | |
62 | /* 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 | |
92 | 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 | */ |
102 | |
103 | /* 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 | |
110 | struct 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 | |
118 | /* |
119 | 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 | |
125 | init: initialize the sensor registers to some sort of reasonable default |
126 | values. Do not use for new drivers and should be removed in existing |
127 | drivers. |
128 | |
129 | load_fw: load firmware. |
130 | |
131 | reset: generic reset command. The argument selects which subsystems to |
132 | 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. |
138 | |
139 | s_power: puts subdevice in power saving mode (on == 0) or normal operation |
140 | mode (on == 1). |
141 | |
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*. |
146 | */ |
147 | struct v4l2_subdev_core_ops { |
148 | int (*log_status)(struct v4l2_subdev *sd); |
149 | int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
150 | struct v4l2_subdev_io_pin_config *pincfg); |
151 | int (*init)(struct v4l2_subdev *sd, u32 val); |
152 | int (*load_fw)(struct v4l2_subdev *sd); |
153 | 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); |
158 | 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); |
161 | int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); |
162 | int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm); |
163 | int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); |
164 | long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
165 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
166 | int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
167 | int (*s_register)(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg); |
168 | #endif |
169 | int (*s_power)(struct v4l2_subdev *sd, int on); |
170 | int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
171 | u32 status, bool *handled); |
172 | 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); |
176 | }; |
177 | |
178 | /* s_radio: v4l device was opened in radio mode. |
179 | |
180 | 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 | |
187 | s_type_addr: sets tuner type and its I2C addr. |
188 | |
189 | s_config: sets tda9887 specific stuff, like port1, port2 and qss |
190 | */ |
191 | struct v4l2_subdev_tuner_ops { |
192 | int (*s_radio)(struct v4l2_subdev *sd); |
193 | int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq); |
194 | int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
195 | int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
196 | int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt); |
197 | int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
198 | int (*s_modulator)(struct v4l2_subdev *sd, const struct v4l2_modulator *vm); |
199 | 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 | |
203 | /* 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 | |
214 | s_routing: used to define the input and/or output pins of an audio chip, |
215 | and any additional configuration data. |
216 | 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 | */ |
223 | struct 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); |
226 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
227 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
228 | }; |
229 | |
230 | /* 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 | */ |
242 | struct 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 | */ |
255 | struct v4l2_mbus_frame_desc { |
256 | struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX]; |
257 | unsigned short num_entries; |
258 | }; |
259 | |
260 | /* |
261 | s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
262 | video input devices. |
263 | |
264 | g_std_output: get current standard for video OUTPUT devices. This is ignored |
265 | by video input devices. |
266 | |
267 | g_tvnorms_output: get v4l2_std_id with all standards supported by video |
268 | OUTPUT device. This is ignored by video input devices. |
269 | |
270 | s_crystal_freq: sets the frequency of the crystal used to generate the |
271 | clocks in Hz. An extra flags field allows device specific configuration |
272 | 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 | |
275 | g_input_status: get input status. Same as the status field in the v4l2_input |
276 | struct. |
277 | |
278 | s_routing: see s_routing in audio_ops, except this version is for video |
279 | devices. |
280 | |
281 | 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 | |
287 | 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 |
294 | |
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. |
300 | |
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. |
304 | */ |
305 | struct v4l2_subdev_video_ops { |
306 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
307 | int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
308 | int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
309 | int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std); |
310 | int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
311 | int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std); |
312 | int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); |
313 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
314 | int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc); |
315 | int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); |
316 | int (*s_crop)(struct v4l2_subdev *sd, const struct v4l2_crop *crop); |
317 | int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
318 | int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
319 | 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); |
323 | int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize); |
324 | int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); |
325 | 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); |
329 | 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); |
335 | int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index, |
336 | enum v4l2_mbus_pixelcode *code); |
337 | int (*enum_mbus_fsizes)(struct v4l2_subdev *sd, |
338 | struct v4l2_frmsizeenum *fsize); |
339 | 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); |
345 | 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); |
349 | int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf, |
350 | unsigned int *size); |
351 | }; |
352 | |
353 | /* |
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). |
375 | |
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. |
381 | */ |
382 | struct 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); |
387 | 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); |
390 | }; |
391 | |
392 | /** |
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. |
398 | * @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. |
401 | */ |
402 | struct v4l2_subdev_sensor_ops { |
403 | int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); |
404 | int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames); |
405 | }; |
406 | |
407 | /* |
408 | [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 | |
430 | enum v4l2_subdev_ir_mode { |
431 | V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */ |
432 | }; |
433 | |
434 | struct 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*/ |
447 | bool invert_level; /* invert signal level */ |
448 | |
449 | /* Tx only */ |
450 | bool invert_carrier_sense; /* Send 0/space as a carrier burst */ |
451 | |
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 | |
459 | struct v4l2_subdev_ir_ops { |
460 | /* 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 | |
479 | /** |
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 | */ |
485 | struct v4l2_subdev_pad_ops { |
486 | 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); |
491 | int (*enum_frame_interval)(struct v4l2_subdev *sd, |
492 | struct v4l2_subdev_fh *fh, |
493 | struct v4l2_subdev_frame_interval_enum *fie); |
494 | 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); |
498 | 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); |
502 | 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); |
506 | 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); |
508 | #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 */ |
513 | 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); |
517 | }; |
518 | |
519 | struct v4l2_subdev_ops { |
520 | 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; |
524 | const struct v4l2_subdev_vbi_ops *vbi; |
525 | const struct v4l2_subdev_ir_ops *ir; |
526 | const struct v4l2_subdev_sensor_ops *sensor; |
527 | const struct v4l2_subdev_pad_ops *pad; |
528 | }; |
529 | |
530 | /* |
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. |
539 | * |
540 | * open: called when the subdev device node is opened by an application. |
541 | * |
542 | * close: called when the subdev device node is closed. |
543 | */ |
544 | struct v4l2_subdev_internal_ops { |
545 | int (*registered)(struct v4l2_subdev *sd); |
546 | void (*unregistered)(struct v4l2_subdev *sd); |
547 | int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
548 | int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
549 | }; |
550 | |
551 | #define V4L2_SUBDEV_NAME_SIZE 32 |
552 | |
553 | /* Set this flag if this subdev is a i2c device. */ |
554 | #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
555 | /* Set this flag if this subdev is a spi device. */ |
556 | #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) |
559 | /* Set this flag if this subdev generates events. */ |
560 | #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) |
561 | |
562 | struct regulator_bulk_data; |
563 | |
564 | struct v4l2_subdev_platform_data { |
565 | /* Optional regulators uset to power on/off the subdevice */ |
566 | struct regulator_bulk_data *regulators; |
567 | int num_regulators; |
568 | |
569 | /* Per-subdevice data, specific for a certain video host device */ |
570 | void *host_priv; |
571 | }; |
572 | |
573 | /* Each instance of a subdev driver should create this struct, either |
574 | stand-alone or embedded in a larger struct. |
575 | */ |
576 | struct v4l2_subdev { |
577 | #if defined(CONFIG_MEDIA_CONTROLLER) |
578 | struct media_entity entity; |
579 | #endif |
580 | struct list_head list; |
581 | struct module *owner; |
582 | u32 flags; |
583 | struct v4l2_device *v4l2_dev; |
584 | const struct v4l2_subdev_ops *ops; |
585 | /* Never call these internal ops from within a driver! */ |
586 | const struct v4l2_subdev_internal_ops *internal_ops; |
587 | /* The control handler of this subdev. May be NULL. */ |
588 | struct v4l2_ctrl_handler *ctrl_handler; |
589 | /* name must be unique */ |
590 | char name[V4L2_SUBDEV_NAME_SIZE]; |
591 | /* can be used to group similar subdevs, value is driver-specific */ |
592 | u32 grp_id; |
593 | /* pointer to private data */ |
594 | void *dev_priv; |
595 | void *host_priv; |
596 | /* subdev device node */ |
597 | struct video_device *devnode; |
598 | /* pointer to the physical device, if any */ |
599 | struct device *dev; |
600 | /* Links this subdev to a global subdev_list or @notifier->done list. */ |
601 | struct list_head async_list; |
602 | /* Pointer to respective struct v4l2_async_subdev. */ |
603 | struct v4l2_async_subdev *asd; |
604 | /* Pointer to the managing notifier. */ |
605 | struct v4l2_async_notifier *notifier; |
606 | /* common part of subdevice platform data */ |
607 | struct v4l2_subdev_platform_data *pdata; |
608 | }; |
609 | |
610 | #define media_entity_to_v4l2_subdev(ent) \ |
611 | container_of(ent, struct v4l2_subdev, entity) |
612 | #define vdev_to_v4l2_subdev(vdev) \ |
613 | ((struct v4l2_subdev *)video_get_drvdata(vdev)) |
614 | |
615 | /* |
616 | * Used for storing subdev information per file handle |
617 | */ |
618 | struct v4l2_subdev_fh { |
619 | struct v4l2_fh vfh; |
620 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
621 | struct { |
622 | struct v4l2_mbus_framefmt try_fmt; |
623 | struct v4l2_rect try_crop; |
624 | struct v4l2_rect try_compose; |
625 | } *pad; |
626 | #endif |
627 | }; |
628 | |
629 | #define to_v4l2_subdev_fh(fh) \ |
630 | container_of(fh, struct v4l2_subdev_fh, vfh) |
631 | |
632 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
633 | #define __V4L2_SUBDEV_MK_GET_TRY(rtype, fun_name, field_name) \ |
634 | static inline struct rtype * \ |
635 | v4l2_subdev_get_try_##fun_name(struct v4l2_subdev_fh *fh, \ |
636 | unsigned int pad) \ |
637 | { \ |
638 | BUG_ON(pad >= vdev_to_v4l2_subdev( \ |
639 | fh->vfh.vdev)->entity.num_pads); \ |
640 | return &fh->pad[pad].field_name; \ |
641 | } |
642 | |
643 | __V4L2_SUBDEV_MK_GET_TRY(v4l2_mbus_framefmt, format, try_fmt) |
644 | __V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, crop, try_crop) |
645 | __V4L2_SUBDEV_MK_GET_TRY(v4l2_rect, compose, try_compose) |
646 | #endif |
647 | |
648 | extern const struct v4l2_file_operations v4l2_subdev_fops; |
649 | |
650 | static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
651 | { |
652 | sd->dev_priv = p; |
653 | } |
654 | |
655 | static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) |
656 | { |
657 | return sd->dev_priv; |
658 | } |
659 | |
660 | static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) |
661 | { |
662 | sd->host_priv = p; |
663 | } |
664 | |
665 | static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) |
666 | { |
667 | return sd->host_priv; |
668 | } |
669 | |
670 | #ifdef CONFIG_MEDIA_CONTROLLER |
671 | int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, |
672 | struct media_link *link, |
673 | struct v4l2_subdev_format *source_fmt, |
674 | struct v4l2_subdev_format *sink_fmt); |
675 | int v4l2_subdev_link_validate(struct media_link *link); |
676 | #endif /* CONFIG_MEDIA_CONTROLLER */ |
677 | void v4l2_subdev_init(struct v4l2_subdev *sd, |
678 | const struct v4l2_subdev_ops *ops); |
679 | |
680 | /* Call an ops of a v4l2_subdev, doing the right checks against |
681 | NULL pointers. |
682 | |
683 | Example: err = v4l2_subdev_call(sd, core, s_std, norm); |
684 | */ |
685 | #define v4l2_subdev_call(sd, o, f, args...) \ |
686 | (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ |
687 | (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) |
688 | |
689 | /* Send a notification to v4l2_device. */ |
690 | #define v4l2_subdev_notify(sd, notification, arg) \ |
691 | ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ |
692 | (sd)->v4l2_dev->notify((sd), (notification), (arg))) |
693 | |
694 | #define v4l2_subdev_has_op(sd, o, f) \ |
695 | ((sd)->ops->o && (sd)->ops->o->f) |
696 | |
697 | #endif |
698 |
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