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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 | ||
24 | #include <media/v4l2-common.h> | |
2096a5dc | 25 | #include <media/v4l2-dev.h> |
9a74251d | 26 | #include <media/v4l2-mediabus.h> |
2a1fcdf0 | 27 | |
1d986add AW |
28 | /* generic v4l2_device notify callback notification values */ |
29 | #define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32) | |
30 | #define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001 | |
31 | #define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002 | |
32 | #define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004 | |
33 | #define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008 | |
34 | ||
35 | #define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32) | |
36 | #define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001 | |
37 | ||
2a1fcdf0 | 38 | struct v4l2_device; |
0996517c | 39 | struct v4l2_ctrl_handler; |
2a1fcdf0 HV |
40 | struct v4l2_subdev; |
41 | struct tuner_setup; | |
42 | ||
78a3b4db HV |
43 | /* decode_vbi_line */ |
44 | struct v4l2_decode_vbi_line { | |
45 | u32 is_second_field; /* Set to 0 for the first (odd) field, | |
46 | set to 1 for the second (even) field. */ | |
47 | u8 *p; /* Pointer to the sliced VBI data from the decoder. | |
48 | On exit points to the start of the payload. */ | |
49 | u32 line; /* Line number of the sliced VBI data (1-23) */ | |
50 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ | |
51 | }; | |
52 | ||
2a1fcdf0 HV |
53 | /* Sub-devices are devices that are connected somehow to the main bridge |
54 | device. These devices are usually audio/video muxers/encoders/decoders or | |
55 | sensors and webcam controllers. | |
56 | ||
57 | Usually these devices are controlled through an i2c bus, but other busses | |
58 | may also be used. | |
59 | ||
60 | The v4l2_subdev struct provides a way of accessing these devices in a | |
61 | generic manner. Most operations that these sub-devices support fall in | |
62 | a few categories: core ops, audio ops, video ops and tuner ops. | |
63 | ||
64 | More categories can be added if needed, although this should remain a | |
65 | limited set (no more than approx. 8 categories). | |
66 | ||
67 | Each category has its own set of ops that subdev drivers can implement. | |
68 | ||
69 | A subdev driver can leave the pointer to the category ops NULL if | |
70 | it does not implement them (e.g. an audio subdev will generally not | |
71 | implement the video category ops). The exception is the core category: | |
72 | this must always be present. | |
73 | ||
74 | These ops are all used internally so it is no problem to change, remove | |
75 | or add ops or move ops from one to another category. Currently these | |
76 | ops are based on the original ioctls, but since ops are not limited to | |
77 | one argument there is room for improvement here once all i2c subdev | |
78 | drivers are converted to use these ops. | |
79 | */ | |
80 | ||
81 | /* Core ops: it is highly recommended to implement at least these ops: | |
82 | ||
83 | g_chip_ident | |
84 | log_status | |
85 | g_register | |
86 | s_register | |
87 | ||
88 | This provides basic debugging support. | |
89 | ||
90 | The ioctl ops is meant for generic ioctl-like commands. Depending on | |
91 | the use-case it might be better to use subdev-specific ops (currently | |
92 | not yet implemented) since ops provide proper type-checking. | |
93 | */ | |
78a3b4db | 94 | |
66752f83 AW |
95 | /* Subdevice external IO pin configuration */ |
96 | #define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */ | |
97 | #define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1) | |
98 | #define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2) | |
99 | #define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */ | |
100 | #define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */ | |
101 | ||
102 | struct v4l2_subdev_io_pin_config { | |
103 | u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */ | |
104 | u8 pin; /* Chip external IO pin to configure */ | |
105 | u8 function; /* Internal signal pad/function to route to IO pin */ | |
106 | u8 value; /* Initial value for pin - e.g. GPIO output value */ | |
107 | u8 strength; /* Pin drive strength */ | |
108 | }; | |
109 | ||
3c7c9370 | 110 | /* |
66752f83 AW |
111 | s_io_pin_config: configure one or more chip I/O pins for chips that |
112 | multiplex different internal signal pads out to IO pins. This function | |
113 | takes a pointer to an array of 'n' pin configuration entries, one for | |
114 | each pin being configured. This function could be called at times | |
115 | other than just subdevice initialization. | |
116 | ||
f0222c7d | 117 | init: initialize the sensor registors to some sort of reasonable default |
78a3b4db HV |
118 | values. Do not use for new drivers and should be removed in existing |
119 | drivers. | |
120 | ||
cc26b076 HV |
121 | load_fw: load firmware. |
122 | ||
123 | reset: generic reset command. The argument selects which subsystems to | |
78a3b4db HV |
124 | reset. Passing 0 will always reset the whole chip. Do not use for new |
125 | drivers without discussing this first on the linux-media mailinglist. | |
126 | There should be no reason normally to reset a device. | |
127 | ||
128 | s_gpio: set GPIO pins. Very simple right now, might need to be extended with | |
129 | a direction argument if needed. | |
622b828a LP |
130 | |
131 | s_power: puts subdevice in power saving mode (on == 0) or normal operation | |
132 | mode (on == 1). | |
260e689b AW |
133 | |
134 | interrupt_service_routine: Called by the bridge chip's interrupt service | |
135 | handler, when an interrupt status has be raised due to this subdev, | |
136 | so that this subdev can handle the details. It may schedule work to be | |
137 | performed later. It must not sleep. *Called from an IRQ context*. | |
78a3b4db | 138 | */ |
2a1fcdf0 | 139 | struct v4l2_subdev_core_ops { |
aecde8b5 | 140 | int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); |
2a1fcdf0 | 141 | int (*log_status)(struct v4l2_subdev *sd); |
66752f83 AW |
142 | int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
143 | struct v4l2_subdev_io_pin_config *pincfg); | |
2a1fcdf0 | 144 | int (*init)(struct v4l2_subdev *sd, u32 val); |
cc26b076 | 145 | int (*load_fw)(struct v4l2_subdev *sd); |
2a1fcdf0 HV |
146 | int (*reset)(struct v4l2_subdev *sd, u32 val); |
147 | int (*s_gpio)(struct v4l2_subdev *sd, u32 val); | |
148 | int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); | |
149 | int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); | |
150 | int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); | |
952617f2 HV |
151 | int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
152 | int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); | |
153 | int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); | |
2a1fcdf0 | 154 | int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); |
f41737ec | 155 | int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); |
069b7479 | 156 | long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
2a1fcdf0 | 157 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
aecde8b5 HV |
158 | int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
159 | int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); | |
2a1fcdf0 | 160 | #endif |
622b828a | 161 | int (*s_power)(struct v4l2_subdev *sd, int on); |
260e689b AW |
162 | int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
163 | u32 status, bool *handled); | |
2a1fcdf0 HV |
164 | }; |
165 | ||
78a3b4db HV |
166 | /* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. |
167 | ||
168 | s_radio: v4l device was opened in Radio mode, to be replaced by s_mode. | |
169 | ||
170 | s_type_addr: sets tuner type and its I2C addr. | |
171 | ||
172 | s_config: sets tda9887 specific stuff, like port1, port2 and qss | |
173 | */ | |
2a1fcdf0 HV |
174 | struct v4l2_subdev_tuner_ops { |
175 | int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type); | |
176 | int (*s_radio)(struct v4l2_subdev *sd); | |
177 | int (*s_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); | |
178 | int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); | |
179 | int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); | |
180 | int (*s_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); | |
d6bacea6 EV |
181 | int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
182 | int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); | |
2a1fcdf0 HV |
183 | int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); |
184 | int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); | |
185 | }; | |
186 | ||
78a3b4db HV |
187 | /* s_clock_freq: set the frequency (in Hz) of the audio clock output. |
188 | Used to slave an audio processor to the video decoder, ensuring that | |
189 | audio and video remain synchronized. Usual values for the frequency | |
190 | are 48000, 44100 or 32000 Hz. If the frequency is not supported, then | |
191 | -EINVAL is returned. | |
192 | ||
193 | s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard | |
194 | way to select I2S clock used by driving digital audio streams at some | |
195 | board designs. Usual values for the frequency are 1024000 and 2048000. | |
196 | If the frequency is not supported, then -EINVAL is returned. | |
197 | ||
5325b427 HV |
198 | s_routing: used to define the input and/or output pins of an audio chip, |
199 | and any additional configuration data. | |
78a3b4db HV |
200 | Never attempt to use user-level input IDs (e.g. Composite, S-Video, |
201 | Tuner) at this level. An i2c device shouldn't know about whether an | |
202 | input pin is connected to a Composite connector, become on another | |
203 | board or platform it might be connected to something else entirely. | |
204 | The calling driver is responsible for mapping a user-level input to | |
205 | the right pins on the i2c device. | |
206 | */ | |
2a1fcdf0 HV |
207 | struct v4l2_subdev_audio_ops { |
208 | int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
209 | int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); | |
5325b427 | 210 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ccc646b | 211 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
2a1fcdf0 HV |
212 | }; |
213 | ||
78a3b4db | 214 | /* |
cc26b076 | 215 | s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
78a3b4db HV |
216 | video input devices. |
217 | ||
9a74251d | 218 | s_crystal_freq: sets the frequency of the crystal used to generate the |
3ff4ad81 | 219 | clocks in Hz. An extra flags field allows device specific configuration |
78a3b4db HV |
220 | regarding clock frequency dividers, etc. If not used, then set flags |
221 | to 0. If the frequency is not supported, then -EINVAL is returned. | |
222 | ||
cc26b076 | 223 | g_input_status: get input status. Same as the status field in the v4l2_input |
78a3b4db HV |
224 | struct. |
225 | ||
cc26b076 | 226 | s_routing: see s_routing in audio_ops, except this version is for video |
78a3b4db | 227 | devices. |
b6456c0c MK |
228 | |
229 | s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to | |
230 | s_std() | |
231 | ||
232 | query_dv_preset: query dv preset in the sub device. This is similar to | |
233 | querystd() | |
234 | ||
235 | s_dv_timings(): Set custom dv timings in the sub device. This is used | |
236 | when sub device is capable of setting detailed timing information | |
237 | in the hardware to generate/detect the video signal. | |
238 | ||
239 | g_dv_timings(): Get custom dv timings in the sub device. | |
240 | ||
9a74251d GL |
241 | enum_mbus_fmt: enumerate pixel formats, provided by a video data source |
242 | ||
243 | g_mbus_fmt: get the current pixel format, provided by a video data source | |
244 | ||
245 | try_mbus_fmt: try to set a pixel format on a video data source | |
246 | ||
247 | s_mbus_fmt: set a pixel format on a video data source | |
78a3b4db | 248 | */ |
2a1fcdf0 | 249 | struct v4l2_subdev_video_ops { |
5325b427 | 250 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
3ff4ad81 | 251 | int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
2a1fcdf0 | 252 | int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
1b6f1d96 HV |
253 | int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
254 | int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); | |
2a1fcdf0 | 255 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
b7f2cef0 GL |
256 | int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc); |
257 | int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); | |
258 | int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); | |
2da9479a HV |
259 | int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
260 | int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); | |
4b2ce11a HV |
261 | int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize); |
262 | int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); | |
6003b5c7 MR |
263 | int (*enum_dv_presets) (struct v4l2_subdev *sd, |
264 | struct v4l2_dv_enum_preset *preset); | |
b6456c0c MK |
265 | int (*s_dv_preset)(struct v4l2_subdev *sd, |
266 | struct v4l2_dv_preset *preset); | |
267 | int (*query_dv_preset)(struct v4l2_subdev *sd, | |
268 | struct v4l2_dv_preset *preset); | |
269 | int (*s_dv_timings)(struct v4l2_subdev *sd, | |
270 | struct v4l2_dv_timings *timings); | |
271 | int (*g_dv_timings)(struct v4l2_subdev *sd, | |
272 | struct v4l2_dv_timings *timings); | |
3805f201 | 273 | int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index, |
9a74251d | 274 | enum v4l2_mbus_pixelcode *code); |
03519b7e QX |
275 | int (*enum_mbus_fsizes)(struct v4l2_subdev *sd, |
276 | struct v4l2_frmsizeenum *fsize); | |
9a74251d GL |
277 | int (*g_mbus_fmt)(struct v4l2_subdev *sd, |
278 | struct v4l2_mbus_framefmt *fmt); | |
279 | int (*try_mbus_fmt)(struct v4l2_subdev *sd, | |
280 | struct v4l2_mbus_framefmt *fmt); | |
281 | int (*s_mbus_fmt)(struct v4l2_subdev *sd, | |
282 | struct v4l2_mbus_framefmt *fmt); | |
2a1fcdf0 HV |
283 | }; |
284 | ||
32cd527f HV |
285 | /* |
286 | decode_vbi_line: video decoders that support sliced VBI need to implement | |
287 | this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the | |
288 | start of the VBI data that was generated by the decoder. The driver | |
289 | then parses the sliced VBI data and sets the other fields in the | |
290 | struct accordingly. The pointer p is updated to point to the start of | |
291 | the payload which can be copied verbatim into the data field of the | |
292 | v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the | |
293 | type field is set to 0 on return. | |
294 | ||
295 | s_vbi_data: used to generate VBI signals on a video signal. | |
296 | v4l2_sliced_vbi_data is filled with the data packets that should be | |
297 | output. Note that if you set the line field to 0, then that VBI signal | |
298 | is disabled. If no valid VBI data was found, then the type field is | |
299 | set to 0 on return. | |
300 | ||
301 | g_vbi_data: used to obtain the sliced VBI packet from a readback register. | |
302 | Not all video decoders support this. If no data is available because | |
303 | the readback register contains invalid or erroneous data -EIO is | |
304 | returned. Note that you must fill in the 'id' member and the 'field' | |
305 | member (to determine whether CC data from the first or second field | |
306 | should be obtained). | |
54aefafb HV |
307 | |
308 | s_raw_fmt: setup the video encoder/decoder for raw VBI. | |
309 | ||
310 | g_sliced_fmt: retrieve the current sliced VBI settings. | |
311 | ||
312 | s_sliced_fmt: setup the sliced VBI settings. | |
32cd527f HV |
313 | */ |
314 | struct v4l2_subdev_vbi_ops { | |
315 | int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); | |
316 | int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data); | |
317 | int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data); | |
318 | int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap); | |
54aefafb HV |
319 | int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt); |
320 | int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
321 | int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); | |
32cd527f HV |
322 | }; |
323 | ||
32536108 GL |
324 | /** |
325 | * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations | |
326 | * @g_skip_top_lines: number of lines at the top of the image to be skipped. | |
327 | * This is needed for some sensors, which always corrupt | |
328 | * several top lines of the output image, or which send their | |
329 | * metadata in them. | |
330 | */ | |
331 | struct v4l2_subdev_sensor_ops { | |
332 | int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); | |
333 | }; | |
334 | ||
1d986add | 335 | /* |
1d986add AW |
336 | [rt]x_g_parameters: Get the current operating parameters and state of the |
337 | the IR receiver or transmitter. | |
338 | ||
339 | [rt]x_s_parameters: Set the current operating parameters and state of the | |
340 | the IR receiver or transmitter. It is recommended to call | |
341 | [rt]x_g_parameters first to fill out the current state, and only change | |
342 | the fields that need to be changed. Upon return, the actual device | |
343 | operating parameters and state will be returned. Note that hardware | |
344 | limitations may prevent the actual settings from matching the requested | |
345 | settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz | |
346 | was requested. An exception is when the shutdown parameter is true. | |
347 | The last used operational parameters will be returned, but the actual | |
348 | state of the hardware be different to minimize power consumption and | |
349 | processing when shutdown is true. | |
350 | ||
351 | rx_read: Reads received codes or pulse width data. | |
352 | The semantics are similar to a non-blocking read() call. | |
353 | ||
354 | tx_write: Writes codes or pulse width data for transmission. | |
355 | The semantics are similar to a non-blocking write() call. | |
356 | */ | |
357 | ||
358 | enum v4l2_subdev_ir_mode { | |
d69e85b6 | 359 | V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */ |
1d986add AW |
360 | }; |
361 | ||
1d986add AW |
362 | struct v4l2_subdev_ir_parameters { |
363 | /* Either Rx or Tx */ | |
364 | unsigned int bytes_per_data_element; /* of data in read or write call */ | |
365 | enum v4l2_subdev_ir_mode mode; | |
366 | ||
367 | bool enable; | |
368 | bool interrupt_enable; | |
369 | bool shutdown; /* true: set hardware to low/no power, false: normal */ | |
370 | ||
371 | bool modulation; /* true: uses carrier, false: baseband */ | |
372 | u32 max_pulse_width; /* ns, valid only for baseband signal */ | |
373 | unsigned int carrier_freq; /* Hz, valid only for modulated signal*/ | |
374 | unsigned int duty_cycle; /* percent, valid only for modulated signal*/ | |
5a28d9a3 AW |
375 | bool invert_level; /* invert signal level */ |
376 | ||
377 | /* Tx only */ | |
378 | bool invert_carrier_sense; /* Send 0/space as a carrier burst */ | |
1d986add AW |
379 | |
380 | /* Rx only */ | |
381 | u32 noise_filter_min_width; /* ns, min time of a valid pulse */ | |
382 | unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */ | |
383 | unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */ | |
384 | u32 resolution; /* ns */ | |
385 | }; | |
386 | ||
387 | struct v4l2_subdev_ir_ops { | |
1d986add AW |
388 | /* Receiver */ |
389 | int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
390 | ssize_t *num); | |
391 | ||
392 | int (*rx_g_parameters)(struct v4l2_subdev *sd, | |
393 | struct v4l2_subdev_ir_parameters *params); | |
394 | int (*rx_s_parameters)(struct v4l2_subdev *sd, | |
395 | struct v4l2_subdev_ir_parameters *params); | |
396 | ||
397 | /* Transmitter */ | |
398 | int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, | |
399 | ssize_t *num); | |
400 | ||
401 | int (*tx_g_parameters)(struct v4l2_subdev *sd, | |
402 | struct v4l2_subdev_ir_parameters *params); | |
403 | int (*tx_s_parameters)(struct v4l2_subdev *sd, | |
404 | struct v4l2_subdev_ir_parameters *params); | |
405 | }; | |
406 | ||
2a1fcdf0 | 407 | struct v4l2_subdev_ops { |
32536108 GL |
408 | const struct v4l2_subdev_core_ops *core; |
409 | const struct v4l2_subdev_tuner_ops *tuner; | |
410 | const struct v4l2_subdev_audio_ops *audio; | |
411 | const struct v4l2_subdev_video_ops *video; | |
32cd527f | 412 | const struct v4l2_subdev_vbi_ops *vbi; |
32536108 GL |
413 | const struct v4l2_subdev_ir_ops *ir; |
414 | const struct v4l2_subdev_sensor_ops *sensor; | |
2a1fcdf0 HV |
415 | }; |
416 | ||
45f6f84a HV |
417 | /* |
418 | * Internal ops. Never call this from drivers, only the v4l2 framework can call | |
419 | * these ops. | |
420 | * | |
421 | * registered: called when this subdev is registered. When called the v4l2_dev | |
422 | * field is set to the correct v4l2_device. | |
423 | * | |
424 | * unregistered: called when this subdev is unregistered. When called the | |
425 | * v4l2_dev field is still set to the correct v4l2_device. | |
426 | */ | |
427 | struct v4l2_subdev_internal_ops { | |
428 | int (*registered)(struct v4l2_subdev *sd); | |
429 | void (*unregistered)(struct v4l2_subdev *sd); | |
430 | }; | |
431 | ||
2a1fcdf0 HV |
432 | #define V4L2_SUBDEV_NAME_SIZE 32 |
433 | ||
b5b2b7ed | 434 | /* Set this flag if this subdev is a i2c device. */ |
2096a5dc | 435 | #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
85e09219 | 436 | /* Set this flag if this subdev is a spi device. */ |
2096a5dc LP |
437 | #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) |
438 | /* Set this flag if this subdev needs a device node. */ | |
439 | #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) | |
b5b2b7ed | 440 | |
2a1fcdf0 HV |
441 | /* Each instance of a subdev driver should create this struct, either |
442 | stand-alone or embedded in a larger struct. | |
443 | */ | |
444 | struct v4l2_subdev { | |
445 | struct list_head list; | |
446 | struct module *owner; | |
b5b2b7ed | 447 | u32 flags; |
b0167600 | 448 | struct v4l2_device *v4l2_dev; |
2a1fcdf0 | 449 | const struct v4l2_subdev_ops *ops; |
45f6f84a HV |
450 | /* Never call these internal ops from within a driver! */ |
451 | const struct v4l2_subdev_internal_ops *internal_ops; | |
0996517c HV |
452 | /* The control handler of this subdev. May be NULL. */ |
453 | struct v4l2_ctrl_handler *ctrl_handler; | |
2a1fcdf0 HV |
454 | /* name must be unique */ |
455 | char name[V4L2_SUBDEV_NAME_SIZE]; | |
456 | /* can be used to group similar subdevs, value is driver-specific */ | |
457 | u32 grp_id; | |
458 | /* pointer to private data */ | |
692d5522 LP |
459 | void *dev_priv; |
460 | void *host_priv; | |
2096a5dc LP |
461 | /* subdev device node */ |
462 | struct video_device devnode; | |
2a1fcdf0 HV |
463 | }; |
464 | ||
2096a5dc LP |
465 | #define vdev_to_v4l2_subdev(vdev) \ |
466 | container_of(vdev, struct v4l2_subdev, devnode) | |
467 | ||
468 | extern const struct v4l2_file_operations v4l2_subdev_fops; | |
469 | ||
2a1fcdf0 HV |
470 | static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
471 | { | |
692d5522 | 472 | sd->dev_priv = p; |
2a1fcdf0 HV |
473 | } |
474 | ||
475 | static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) | |
476 | { | |
692d5522 LP |
477 | return sd->dev_priv; |
478 | } | |
479 | ||
480 | static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) | |
481 | { | |
482 | sd->host_priv = p; | |
483 | } | |
484 | ||
485 | static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) | |
486 | { | |
487 | return sd->host_priv; | |
2a1fcdf0 HV |
488 | } |
489 | ||
2a1fcdf0 HV |
490 | static inline void v4l2_subdev_init(struct v4l2_subdev *sd, |
491 | const struct v4l2_subdev_ops *ops) | |
492 | { | |
493 | INIT_LIST_HEAD(&sd->list); | |
0070d91e | 494 | BUG_ON(!ops); |
2a1fcdf0 | 495 | sd->ops = ops; |
b0167600 | 496 | sd->v4l2_dev = NULL; |
b5b2b7ed | 497 | sd->flags = 0; |
2a1fcdf0 HV |
498 | sd->name[0] = '\0'; |
499 | sd->grp_id = 0; | |
692d5522 LP |
500 | sd->dev_priv = NULL; |
501 | sd->host_priv = NULL; | |
2a1fcdf0 HV |
502 | } |
503 | ||
504 | /* Call an ops of a v4l2_subdev, doing the right checks against | |
505 | NULL pointers. | |
506 | ||
507 | Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip); | |
508 | */ | |
509 | #define v4l2_subdev_call(sd, o, f, args...) \ | |
dbc8e34a | 510 | (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ |
2a1fcdf0 HV |
511 | (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) |
512 | ||
98ec6339 HV |
513 | /* Send a notification to v4l2_device. */ |
514 | #define v4l2_subdev_notify(sd, notification, arg) \ | |
515 | ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ | |
516 | (sd)->v4l2_dev->notify((sd), (notification), (arg))) | |
517 | ||
2a1fcdf0 | 518 | #endif |