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2a1fcdf0 HV |
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 | ||
61f5db54 | 24 | #include <media/media-entity.h> |
2a1fcdf0 | 25 | #include <media/v4l2-common.h> |
2096a5dc | 26 | #include <media/v4l2-dev.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 | ||
2a1fcdf0 | 39 | struct v4l2_device; |
0996517c | 40 | struct v4l2_ctrl_handler; |
02adb1cc SA |
41 | struct v4l2_event_subscription; |
42 | struct v4l2_fh; | |
2a1fcdf0 HV |
43 | struct v4l2_subdev; |
44 | struct tuner_setup; | |
45 | ||
78a3b4db HV |
46 | /* decode_vbi_line */ |
47 | struct v4l2_decode_vbi_line { | |
48 | u32 is_second_field; /* Set to 0 for the first (odd) field, | |
49 | set to 1 for the second (even) field. */ | |
50 | u8 *p; /* Pointer to the sliced VBI data from the decoder. | |
51 | On exit points to the start of the payload. */ | |
52 | u32 line; /* Line number of the sliced VBI data (1-23) */ | |
53 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ | |
54 | }; | |
55 | ||
2a1fcdf0 HV |
56 | /* Sub-devices are devices that are connected somehow to the main bridge |
57 | device. These devices are usually audio/video muxers/encoders/decoders or | |
58 | sensors and webcam controllers. | |
59 | ||
60 | Usually these devices are controlled through an i2c bus, but other busses | |
61 | may also be used. | |
62 | ||
63 | The v4l2_subdev struct provides a way of accessing these devices in a | |
64 | generic manner. Most operations that these sub-devices support fall in | |
65 | a few categories: core ops, audio ops, video ops and tuner ops. | |
66 | ||
67 | More categories can be added if needed, although this should remain a | |
68 | limited set (no more than approx. 8 categories). | |
69 | ||
70 | Each category has its own set of ops that subdev drivers can implement. | |
71 | ||
72 | A subdev driver can leave the pointer to the category ops NULL if | |
73 | it does not implement them (e.g. an audio subdev will generally not | |
74 | implement the video category ops). The exception is the core category: | |
75 | this must always be present. | |
76 | ||
77 | These ops are all used internally so it is no problem to change, remove | |
78 | or add ops or move ops from one to another category. Currently these | |
79 | ops are based on the original ioctls, but since ops are not limited to | |
80 | one argument there is room for improvement here once all i2c subdev | |
81 | drivers are converted to use these ops. | |
82 | */ | |
83 | ||
84 | /* Core ops: it is highly recommended to implement at least these ops: | |
85 | ||
86 | g_chip_ident | |
87 | log_status | |
88 | g_register | |
89 | s_register | |
90 | ||
91 | This provides basic debugging support. | |
92 | ||
93 | The ioctl ops is meant for generic ioctl-like commands. Depending on | |
94 | the use-case it might be better to use subdev-specific ops (currently | |
95 | not yet implemented) since ops provide proper type-checking. | |
96 | */ | |
78a3b4db | 97 | |
66752f83 AW |
98 | /* Subdevice external IO pin configuration */ |
99 | #define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */ | |
100 | #define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1) | |
101 | #define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2) | |
102 | #define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */ | |
103 | #define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */ | |
104 | ||
105 | struct v4l2_subdev_io_pin_config { | |
106 | u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */ | |
107 | u8 pin; /* Chip external IO pin to configure */ | |
108 | u8 function; /* Internal signal pad/function to route to IO pin */ | |
109 | u8 value; /* Initial value for pin - e.g. GPIO output value */ | |
110 | u8 strength; /* Pin drive strength */ | |
111 | }; | |
112 | ||
3c7c9370 | 113 | /* |
66752f83 AW |
114 | s_io_pin_config: configure one or more chip I/O pins for chips that |
115 | multiplex different internal signal pads out to IO pins. This function | |
116 | takes a pointer to an array of 'n' pin configuration entries, one for | |
117 | each pin being configured. This function could be called at times | |
118 | other than just subdevice initialization. | |
119 | ||
f0222c7d | 120 | init: initialize the sensor registors to some sort of reasonable default |
78a3b4db HV |
121 | values. Do not use for new drivers and should be removed in existing |
122 | drivers. | |
123 | ||
cc26b076 HV |
124 | load_fw: load firmware. |
125 | ||
126 | reset: generic reset command. The argument selects which subsystems to | |
78a3b4db HV |
127 | reset. Passing 0 will always reset the whole chip. Do not use for new |
128 | drivers without discussing this first on the linux-media mailinglist. | |
129 | There should be no reason normally to reset a device. | |
130 | ||
131 | s_gpio: set GPIO pins. Very simple right now, might need to be extended with | |
132 | a direction argument if needed. | |
622b828a LP |
133 | |
134 | s_power: puts subdevice in power saving mode (on == 0) or normal operation | |
135 | mode (on == 1). | |
260e689b AW |
136 | |
137 | interrupt_service_routine: Called by the bridge chip's interrupt service | |
138 | handler, when an interrupt status has be raised due to this subdev, | |
139 | so that this subdev can handle the details. It may schedule work to be | |
140 | performed later. It must not sleep. *Called from an IRQ context*. | |
78a3b4db | 141 | */ |
2a1fcdf0 | 142 | struct v4l2_subdev_core_ops { |
aecde8b5 | 143 | int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); |
2a1fcdf0 | 144 | int (*log_status)(struct v4l2_subdev *sd); |
66752f83 AW |
145 | int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
146 | struct v4l2_subdev_io_pin_config *pincfg); | |
2a1fcdf0 | 147 | int (*init)(struct v4l2_subdev *sd, u32 val); |
cc26b076 | 148 | int (*load_fw)(struct v4l2_subdev *sd); |
2a1fcdf0 HV |
149 | int (*reset)(struct v4l2_subdev *sd, u32 val); |
150 | int (*s_gpio)(struct v4l2_subdev *sd, u32 val); | |
151 | int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); | |
152 | int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); | |
153 | int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); | |
952617f2 HV |
154 | int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
155 | int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); | |
156 | int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); | |
2a1fcdf0 | 157 | int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); |
f41737ec | 158 | int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); |
069b7479 | 159 | long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
2a1fcdf0 | 160 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
aecde8b5 HV |
161 | int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
162 | int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); | |
2a1fcdf0 | 163 | #endif |
622b828a | 164 | int (*s_power)(struct v4l2_subdev *sd, int on); |
260e689b AW |
165 | int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
166 | u32 status, bool *handled); | |
02adb1cc SA |
167 | int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
168 | struct v4l2_event_subscription *sub); | |
169 | int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, | |
170 | struct v4l2_event_subscription *sub); | |
2a1fcdf0 HV |
171 | }; |
172 | ||
78a3b4db HV |
173 | /* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. |
174 | ||
175 | s_radio: v4l device was opened in Radio mode, to be replaced by s_mode. | |
176 | ||
177 | s_type_addr: sets tuner type and its I2C addr. | |
178 | ||
179 | s_config: sets tda9887 specific stuff, like port1, port2 and qss | |
180 | */ | |
2a1fcdf0 HV |
181 | struct v4l2_subdev_tuner_ops { |
182 | int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type); | |
183 | int (*s_radio)(struct v4l2_subdev *sd); | |
184 | int (*s_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); | |
185 | int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); | |
186 | int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); | |
187 | int (*s_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); | |
d6bacea6 EV |
188 | int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
189 | int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); | |
2a1fcdf0 HV |
190 | int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); |
191 | int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); | |
192 | }; | |
193 | ||
78a3b4db HV |
194 | /* s_clock_freq: set the frequency (in Hz) of the audio clock output. |
195 | Used to slave an audio processor to the video decoder, ensuring that | |
196 | audio and video remain synchronized. Usual values for the frequency | |
197 | are 48000, 44100 or 32000 Hz. If the frequency is not supported, then | |
198 | -EINVAL is returned. | |
199 | ||
200 | s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard | |
201 | way to select I2S clock used by driving digital audio streams at some | |
202 | board designs. Usual values for the frequency are 1024000 and 2048000. | |
203 | If the frequency is not supported, then -EINVAL is returned. | |
204 | ||
5325b427 HV |
205 | s_routing: used to define the input and/or output pins of an audio chip, |
206 | and any additional configuration data. | |
78a3b4db HV |
207 | Never attempt to use user-level input IDs (e.g. Composite, S-Video, |
208 | Tuner) at this level. An i2c device shouldn't know about whether an | |
209 | input pin is connected to a Composite connector, become on another | |
210 | board or platform it might be connected to something else entirely. | |
211 | The calling driver is responsible for mapping a user-level input to | |
212 | the right pins on the i2c device. | |
213 | */ | |
2a1fcdf0 HV |
214 | struct v4l2_subdev_audio_ops { |
215 | int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
216 | int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
5325b427 | 217 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ccc646b | 218 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
2a1fcdf0 HV |
219 | }; |
220 | ||
78a3b4db | 221 | /* |
cc26b076 | 222 | s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
78a3b4db HV |
223 | video input devices. |
224 | ||
9a74251d | 225 | s_crystal_freq: sets the frequency of the crystal used to generate the |
3ff4ad81 | 226 | clocks in Hz. An extra flags field allows device specific configuration |
78a3b4db HV |
227 | regarding clock frequency dividers, etc. If not used, then set flags |
228 | to 0. If the frequency is not supported, then -EINVAL is returned. | |
229 | ||
cc26b076 | 230 | g_input_status: get input status. Same as the status field in the v4l2_input |
78a3b4db HV |
231 | struct. |
232 | ||
cc26b076 | 233 | s_routing: see s_routing in audio_ops, except this version is for video |
78a3b4db | 234 | devices. |
b6456c0c MK |
235 | |
236 | s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to | |
237 | s_std() | |
238 | ||
239 | query_dv_preset: query dv preset in the sub device. This is similar to | |
240 | querystd() | |
241 | ||
242 | s_dv_timings(): Set custom dv timings in the sub device. This is used | |
243 | when sub device is capable of setting detailed timing information | |
244 | in the hardware to generate/detect the video signal. | |
245 | ||
246 | g_dv_timings(): Get custom dv timings in the sub device. | |
247 | ||
9a74251d GL |
248 | enum_mbus_fmt: enumerate pixel formats, provided by a video data source |
249 | ||
250 | g_mbus_fmt: get the current pixel format, provided by a video data source | |
251 | ||
252 | try_mbus_fmt: try to set a pixel format on a video data source | |
253 | ||
254 | s_mbus_fmt: set a pixel format on a video data source | |
78a3b4db | 255 | */ |
2a1fcdf0 | 256 | struct v4l2_subdev_video_ops { |
5325b427 | 257 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ff4ad81 | 258 | int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
2a1fcdf0 | 259 | int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
1b6f1d96 HV |
260 | int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
261 | int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); | |
2a1fcdf0 | 262 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
b7f2cef0 GL |
263 | int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc); |
264 | int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); | |
265 | int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); | |
2da9479a HV |
266 | int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
267 | int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); | |
4b2ce11a HV |
268 | int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize); |
269 | int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); | |
6003b5c7 MR |
270 | int (*enum_dv_presets) (struct v4l2_subdev *sd, |
271 | struct v4l2_dv_enum_preset *preset); | |
b6456c0c MK |
272 | int (*s_dv_preset)(struct v4l2_subdev *sd, |
273 | struct v4l2_dv_preset *preset); | |
274 | int (*query_dv_preset)(struct v4l2_subdev *sd, | |
275 | struct v4l2_dv_preset *preset); | |
276 | int (*s_dv_timings)(struct v4l2_subdev *sd, | |
277 | struct v4l2_dv_timings *timings); | |
278 | int (*g_dv_timings)(struct v4l2_subdev *sd, | |
279 | struct v4l2_dv_timings *timings); | |
3805f201 | 280 | int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index, |
9a74251d | 281 | enum v4l2_mbus_pixelcode *code); |
03519b7e QX |
282 | int (*enum_mbus_fsizes)(struct v4l2_subdev *sd, |
283 | struct v4l2_frmsizeenum *fsize); | |
9a74251d GL |
284 | int (*g_mbus_fmt)(struct v4l2_subdev *sd, |
285 | struct v4l2_mbus_framefmt *fmt); | |
286 | int (*try_mbus_fmt)(struct v4l2_subdev *sd, | |
287 | struct v4l2_mbus_framefmt *fmt); | |
288 | int (*s_mbus_fmt)(struct v4l2_subdev *sd, | |
289 | struct v4l2_mbus_framefmt *fmt); | |
2a1fcdf0 HV |
290 | }; |
291 | ||
32cd527f HV |
292 | /* |
293 | decode_vbi_line: video decoders that support sliced VBI need to implement | |
294 | this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the | |
295 | start of the VBI data that was generated by the decoder. The driver | |
296 | then parses the sliced VBI data and sets the other fields in the | |
297 | struct accordingly. The pointer p is updated to point to the start of | |
298 | the payload which can be copied verbatim into the data field of the | |
299 | v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the | |
300 | type field is set to 0 on return. | |
301 | ||
302 | s_vbi_data: used to generate VBI signals on a video signal. | |
303 | v4l2_sliced_vbi_data is filled with the data packets that should be | |
304 | output. Note that if you set the line field to 0, then that VBI signal | |
305 | is disabled. If no valid VBI data was found, then the type field is | |
306 | set to 0 on return. | |
307 | ||
308 | g_vbi_data: used to obtain the sliced VBI packet from a readback register. | |
309 | Not all video decoders support this. If no data is available because | |
310 | the readback register contains invalid or erroneous data -EIO is | |
311 | returned. Note that you must fill in the 'id' member and the 'field' | |
312 | member (to determine whether CC data from the first or second field | |
313 | should be obtained). | |
54aefafb HV |
314 | |
315 | s_raw_fmt: setup the video encoder/decoder for raw VBI. | |
316 | ||
317 | g_sliced_fmt: retrieve the current sliced VBI settings. | |
318 | ||
319 | s_sliced_fmt: setup the sliced VBI settings. | |
32cd527f HV |
320 | */ |
321 | struct v4l2_subdev_vbi_ops { | |
322 | int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); | |
323 | int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data); | |
324 | int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data); | |
325 | int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap); | |
54aefafb HV |
326 | int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt); |
327 | int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
328 | int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
32cd527f HV |
329 | }; |
330 | ||
32536108 GL |
331 | /** |
332 | * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations | |
333 | * @g_skip_top_lines: number of lines at the top of the image to be skipped. | |
334 | * This is needed for some sensors, which always corrupt | |
335 | * several top lines of the output image, or which send their | |
336 | * metadata in them. | |
337 | */ | |
338 | struct v4l2_subdev_sensor_ops { | |
339 | int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); | |
340 | }; | |
341 | ||
1d986add | 342 | /* |
1d986add AW |
343 | [rt]x_g_parameters: Get the current operating parameters and state of the |
344 | the IR receiver or transmitter. | |
345 | ||
346 | [rt]x_s_parameters: Set the current operating parameters and state of the | |
347 | the IR receiver or transmitter. It is recommended to call | |
348 | [rt]x_g_parameters first to fill out the current state, and only change | |
349 | the fields that need to be changed. Upon return, the actual device | |
350 | operating parameters and state will be returned. Note that hardware | |
351 | limitations may prevent the actual settings from matching the requested | |
352 | settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz | |
353 | was requested. An exception is when the shutdown parameter is true. | |
354 | The last used operational parameters will be returned, but the actual | |
355 | state of the hardware be different to minimize power consumption and | |
356 | processing when shutdown is true. | |
357 | ||
358 | rx_read: Reads received codes or pulse width data. | |
359 | The semantics are similar to a non-blocking read() call. | |
360 | ||
361 | tx_write: Writes codes or pulse width data for transmission. | |
362 | The semantics are similar to a non-blocking write() call. | |
363 | */ | |
364 | ||
365 | enum v4l2_subdev_ir_mode { | |
d69e85b6 | 366 | V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */ |
1d986add AW |
367 | }; |
368 | ||
1d986add AW |
369 | struct v4l2_subdev_ir_parameters { |
370 | /* Either Rx or Tx */ | |
371 | unsigned int bytes_per_data_element; /* of data in read or write call */ | |
372 | enum v4l2_subdev_ir_mode mode; | |
373 | ||
374 | bool enable; | |
375 | bool interrupt_enable; | |
376 | bool shutdown; /* true: set hardware to low/no power, false: normal */ | |
377 | ||
378 | bool modulation; /* true: uses carrier, false: baseband */ | |
379 | u32 max_pulse_width; /* ns, valid only for baseband signal */ | |
380 | unsigned int carrier_freq; /* Hz, valid only for modulated signal*/ | |
381 | unsigned int duty_cycle; /* percent, valid only for modulated signal*/ | |
5a28d9a3 AW |
382 | bool invert_level; /* invert signal level */ |
383 | ||
384 | /* Tx only */ | |
385 | bool invert_carrier_sense; /* Send 0/space as a carrier burst */ | |
1d986add AW |
386 | |
387 | /* Rx only */ | |
388 | u32 noise_filter_min_width; /* ns, min time of a valid pulse */ | |
389 | unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */ | |
390 | unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */ | |
391 | u32 resolution; /* ns */ | |
392 | }; | |
393 | ||
394 | struct v4l2_subdev_ir_ops { | |
1d986add AW |
395 | /* Receiver */ |
396 | int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
397 | ssize_t *num); | |
398 | ||
399 | int (*rx_g_parameters)(struct v4l2_subdev *sd, | |
400 | struct v4l2_subdev_ir_parameters *params); | |
401 | int (*rx_s_parameters)(struct v4l2_subdev *sd, | |
402 | struct v4l2_subdev_ir_parameters *params); | |
403 | ||
404 | /* Transmitter */ | |
405 | int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
406 | ssize_t *num); | |
407 | ||
408 | int (*tx_g_parameters)(struct v4l2_subdev *sd, | |
409 | struct v4l2_subdev_ir_parameters *params); | |
410 | int (*tx_s_parameters)(struct v4l2_subdev *sd, | |
411 | struct v4l2_subdev_ir_parameters *params); | |
412 | }; | |
413 | ||
2a1fcdf0 | 414 | struct v4l2_subdev_ops { |
32536108 GL |
415 | const struct v4l2_subdev_core_ops *core; |
416 | const struct v4l2_subdev_tuner_ops *tuner; | |
417 | const struct v4l2_subdev_audio_ops *audio; | |
418 | const struct v4l2_subdev_video_ops *video; | |
32cd527f | 419 | const struct v4l2_subdev_vbi_ops *vbi; |
32536108 GL |
420 | const struct v4l2_subdev_ir_ops *ir; |
421 | const struct v4l2_subdev_sensor_ops *sensor; | |
2a1fcdf0 HV |
422 | }; |
423 | ||
45f6f84a HV |
424 | /* |
425 | * Internal ops. Never call this from drivers, only the v4l2 framework can call | |
426 | * these ops. | |
427 | * | |
428 | * registered: called when this subdev is registered. When called the v4l2_dev | |
429 | * field is set to the correct v4l2_device. | |
430 | * | |
431 | * unregistered: called when this subdev is unregistered. When called the | |
432 | * v4l2_dev field is still set to the correct v4l2_device. | |
433 | */ | |
434 | struct v4l2_subdev_internal_ops { | |
435 | int (*registered)(struct v4l2_subdev *sd); | |
436 | void (*unregistered)(struct v4l2_subdev *sd); | |
437 | }; | |
438 | ||
2a1fcdf0 HV |
439 | #define V4L2_SUBDEV_NAME_SIZE 32 |
440 | ||
b5b2b7ed | 441 | /* Set this flag if this subdev is a i2c device. */ |
2096a5dc | 442 | #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
85e09219 | 443 | /* Set this flag if this subdev is a spi device. */ |
2096a5dc LP |
444 | #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) |
445 | /* Set this flag if this subdev needs a device node. */ | |
446 | #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) | |
02adb1cc SA |
447 | /* Set this flag if this subdev generates events. */ |
448 | #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) | |
b5b2b7ed | 449 | |
2a1fcdf0 HV |
450 | /* Each instance of a subdev driver should create this struct, either |
451 | stand-alone or embedded in a larger struct. | |
452 | */ | |
453 | struct v4l2_subdev { | |
61f5db54 LP |
454 | #if defined(CONFIG_MEDIA_CONTROLLER) |
455 | struct media_entity entity; | |
456 | #endif | |
2a1fcdf0 HV |
457 | struct list_head list; |
458 | struct module *owner; | |
b5b2b7ed | 459 | u32 flags; |
b0167600 | 460 | struct v4l2_device *v4l2_dev; |
2a1fcdf0 | 461 | const struct v4l2_subdev_ops *ops; |
45f6f84a HV |
462 | /* Never call these internal ops from within a driver! */ |
463 | const struct v4l2_subdev_internal_ops *internal_ops; | |
0996517c HV |
464 | /* The control handler of this subdev. May be NULL. */ |
465 | struct v4l2_ctrl_handler *ctrl_handler; | |
2a1fcdf0 HV |
466 | /* name must be unique */ |
467 | char name[V4L2_SUBDEV_NAME_SIZE]; | |
468 | /* can be used to group similar subdevs, value is driver-specific */ | |
469 | u32 grp_id; | |
470 | /* pointer to private data */ | |
692d5522 LP |
471 | void *dev_priv; |
472 | void *host_priv; | |
2096a5dc LP |
473 | /* subdev device node */ |
474 | struct video_device devnode; | |
02adb1cc SA |
475 | /* number of events to be allocated on open */ |
476 | unsigned int nevents; | |
2a1fcdf0 HV |
477 | }; |
478 | ||
61f5db54 LP |
479 | #define media_entity_to_v4l2_subdev(ent) \ |
480 | container_of(ent, struct v4l2_subdev, entity) | |
2096a5dc LP |
481 | #define vdev_to_v4l2_subdev(vdev) \ |
482 | container_of(vdev, struct v4l2_subdev, devnode) | |
483 | ||
484 | extern const struct v4l2_file_operations v4l2_subdev_fops; | |
485 | ||
2a1fcdf0 HV |
486 | static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
487 | { | |
692d5522 | 488 | sd->dev_priv = p; |
2a1fcdf0 HV |
489 | } |
490 | ||
491 | static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) | |
492 | { | |
692d5522 LP |
493 | return sd->dev_priv; |
494 | } | |
495 | ||
496 | static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) | |
497 | { | |
498 | sd->host_priv = p; | |
499 | } | |
500 | ||
501 | static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) | |
502 | { | |
503 | return sd->host_priv; | |
2a1fcdf0 HV |
504 | } |
505 | ||
3dd5ee08 LP |
506 | void v4l2_subdev_init(struct v4l2_subdev *sd, |
507 | const struct v4l2_subdev_ops *ops); | |
2a1fcdf0 HV |
508 | |
509 | /* Call an ops of a v4l2_subdev, doing the right checks against | |
510 | NULL pointers. | |
511 | ||
512 | Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip); | |
513 | */ | |
514 | #define v4l2_subdev_call(sd, o, f, args...) \ | |
dbc8e34a | 515 | (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ |
2a1fcdf0 HV |
516 | (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) |
517 | ||
98ec6339 HV |
518 | /* Send a notification to v4l2_device. */ |
519 | #define v4l2_subdev_notify(sd, notification, arg) \ | |
520 | ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ | |
521 | (sd)->v4l2_dev->notify((sd), (notification), (arg))) | |
522 | ||
2a1fcdf0 | 523 | #endif |