Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 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 | |
Laurent Pinchart | 333c8b9 | 2010-03-15 20:26:04 -0300 | [diff] [blame] | 24 | #include <linux/v4l2-subdev.h> |
Laurent Pinchart | 61f5db5 | 2009-12-09 08:40:08 -0300 | [diff] [blame] | 25 | #include <media/media-entity.h> |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 26 | #include <media/v4l2-common.h> |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 27 | #include <media/v4l2-dev.h> |
Stanimir Varbanov | 7cd5a16 | 2010-05-21 06:04:24 -0300 | [diff] [blame] | 28 | #include <media/v4l2-fh.h> |
Guennadi Liakhovetski | 9a74251 | 2009-12-11 11:41:28 -0300 | [diff] [blame] | 29 | #include <media/v4l2-mediabus.h> |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 30 | |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 31 | /* generic v4l2_device notify callback notification values */ |
| 32 | #define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32) |
| 33 | #define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001 |
| 34 | #define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002 |
| 35 | #define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004 |
| 36 | #define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008 |
| 37 | |
| 38 | #define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32) |
| 39 | #define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001 |
| 40 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 41 | struct v4l2_device; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 42 | struct v4l2_ctrl_handler; |
Sakari Ailus | 02adb1c | 2010-03-03 12:49:38 -0300 | [diff] [blame] | 43 | struct v4l2_event_subscription; |
| 44 | struct v4l2_fh; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 45 | struct v4l2_subdev; |
Laurent Pinchart | f0beea8 | 2010-08-01 19:05:09 -0300 | [diff] [blame] | 46 | struct v4l2_subdev_fh; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 47 | struct tuner_setup; |
| 48 | |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 49 | /* decode_vbi_line */ |
| 50 | struct v4l2_decode_vbi_line { |
| 51 | u32 is_second_field; /* Set to 0 for the first (odd) field, |
| 52 | set to 1 for the second (even) field. */ |
| 53 | u8 *p; /* Pointer to the sliced VBI data from the decoder. |
| 54 | On exit points to the start of the payload. */ |
| 55 | u32 line; /* Line number of the sliced VBI data (1-23) */ |
| 56 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ |
| 57 | }; |
| 58 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 59 | /* Sub-devices are devices that are connected somehow to the main bridge |
| 60 | device. These devices are usually audio/video muxers/encoders/decoders or |
| 61 | sensors and webcam controllers. |
| 62 | |
| 63 | Usually these devices are controlled through an i2c bus, but other busses |
| 64 | may also be used. |
| 65 | |
| 66 | The v4l2_subdev struct provides a way of accessing these devices in a |
| 67 | generic manner. Most operations that these sub-devices support fall in |
| 68 | a few categories: core ops, audio ops, video ops and tuner ops. |
| 69 | |
| 70 | More categories can be added if needed, although this should remain a |
| 71 | limited set (no more than approx. 8 categories). |
| 72 | |
| 73 | Each category has its own set of ops that subdev drivers can implement. |
| 74 | |
| 75 | A subdev driver can leave the pointer to the category ops NULL if |
| 76 | it does not implement them (e.g. an audio subdev will generally not |
| 77 | implement the video category ops). The exception is the core category: |
| 78 | this must always be present. |
| 79 | |
| 80 | These ops are all used internally so it is no problem to change, remove |
| 81 | or add ops or move ops from one to another category. Currently these |
| 82 | ops are based on the original ioctls, but since ops are not limited to |
| 83 | one argument there is room for improvement here once all i2c subdev |
| 84 | drivers are converted to use these ops. |
| 85 | */ |
| 86 | |
| 87 | /* Core ops: it is highly recommended to implement at least these ops: |
| 88 | |
| 89 | g_chip_ident |
| 90 | log_status |
| 91 | g_register |
| 92 | s_register |
| 93 | |
| 94 | This provides basic debugging support. |
| 95 | |
| 96 | The ioctl ops is meant for generic ioctl-like commands. Depending on |
| 97 | the use-case it might be better to use subdev-specific ops (currently |
| 98 | not yet implemented) since ops provide proper type-checking. |
| 99 | */ |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 100 | |
Andy Walls | 66752f8 | 2010-07-18 18:51:10 -0300 | [diff] [blame] | 101 | /* Subdevice external IO pin configuration */ |
| 102 | #define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */ |
| 103 | #define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1) |
| 104 | #define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2) |
| 105 | #define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */ |
| 106 | #define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */ |
| 107 | |
| 108 | struct v4l2_subdev_io_pin_config { |
| 109 | u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */ |
| 110 | u8 pin; /* Chip external IO pin to configure */ |
| 111 | u8 function; /* Internal signal pad/function to route to IO pin */ |
| 112 | u8 value; /* Initial value for pin - e.g. GPIO output value */ |
| 113 | u8 strength; /* Pin drive strength */ |
| 114 | }; |
| 115 | |
Hans Verkuil | 3c7c937 | 2011-01-08 07:08:02 -0300 | [diff] [blame] | 116 | /* |
Andy Walls | 66752f8 | 2010-07-18 18:51:10 -0300 | [diff] [blame] | 117 | s_io_pin_config: configure one or more chip I/O pins for chips that |
| 118 | multiplex different internal signal pads out to IO pins. This function |
| 119 | takes a pointer to an array of 'n' pin configuration entries, one for |
| 120 | each pin being configured. This function could be called at times |
| 121 | other than just subdevice initialization. |
| 122 | |
Hans Verkuil | f0222c7 | 2009-06-09 17:12:33 -0300 | [diff] [blame] | 123 | init: initialize the sensor registors to some sort of reasonable default |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 124 | values. Do not use for new drivers and should be removed in existing |
| 125 | drivers. |
| 126 | |
Hans Verkuil | cc26b07 | 2009-03-29 19:20:26 -0300 | [diff] [blame] | 127 | load_fw: load firmware. |
| 128 | |
| 129 | reset: generic reset command. The argument selects which subsystems to |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 130 | reset. Passing 0 will always reset the whole chip. Do not use for new |
| 131 | drivers without discussing this first on the linux-media mailinglist. |
| 132 | There should be no reason normally to reset a device. |
| 133 | |
| 134 | s_gpio: set GPIO pins. Very simple right now, might need to be extended with |
| 135 | a direction argument if needed. |
Laurent Pinchart | 622b828 | 2009-10-05 10:48:17 -0300 | [diff] [blame] | 136 | |
| 137 | s_power: puts subdevice in power saving mode (on == 0) or normal operation |
| 138 | mode (on == 1). |
Andy Walls | 260e689 | 2010-07-18 20:54:52 -0300 | [diff] [blame] | 139 | |
| 140 | interrupt_service_routine: Called by the bridge chip's interrupt service |
| 141 | handler, when an interrupt status has be raised due to this subdev, |
| 142 | so that this subdev can handle the details. It may schedule work to be |
| 143 | performed later. It must not sleep. *Called from an IRQ context*. |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 144 | */ |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 145 | struct v4l2_subdev_core_ops { |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 146 | int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 147 | int (*log_status)(struct v4l2_subdev *sd); |
Andy Walls | 66752f8 | 2010-07-18 18:51:10 -0300 | [diff] [blame] | 148 | int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
| 149 | struct v4l2_subdev_io_pin_config *pincfg); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 150 | int (*init)(struct v4l2_subdev *sd, u32 val); |
Hans Verkuil | cc26b07 | 2009-03-29 19:20:26 -0300 | [diff] [blame] | 151 | int (*load_fw)(struct v4l2_subdev *sd); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 152 | int (*reset)(struct v4l2_subdev *sd, u32 val); |
| 153 | int (*s_gpio)(struct v4l2_subdev *sd, u32 val); |
| 154 | int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); |
| 155 | int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); |
| 156 | int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); |
Hans Verkuil | 952617f | 2009-01-12 18:17:14 -0300 | [diff] [blame] | 157 | int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
| 158 | int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
| 159 | int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 160 | int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); |
Hans Verkuil | f41737e | 2009-04-01 03:52:39 -0300 | [diff] [blame] | 161 | int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 162 | long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 163 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 164 | int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
| 165 | int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 166 | #endif |
Laurent Pinchart | 622b828 | 2009-10-05 10:48:17 -0300 | [diff] [blame] | 167 | int (*s_power)(struct v4l2_subdev *sd, int on); |
Andy Walls | 260e689 | 2010-07-18 20:54:52 -0300 | [diff] [blame] | 168 | int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
| 169 | u32 status, bool *handled); |
Sakari Ailus | 02adb1c | 2010-03-03 12:49:38 -0300 | [diff] [blame] | 170 | int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
| 171 | struct v4l2_event_subscription *sub); |
| 172 | int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
| 173 | struct v4l2_event_subscription *sub); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 174 | }; |
| 175 | |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 176 | /* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. |
| 177 | |
| 178 | s_radio: v4l device was opened in Radio mode, to be replaced by s_mode. |
| 179 | |
| 180 | s_type_addr: sets tuner type and its I2C addr. |
| 181 | |
| 182 | s_config: sets tda9887 specific stuff, like port1, port2 and qss |
| 183 | */ |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 184 | struct v4l2_subdev_tuner_ops { |
| 185 | int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type); |
| 186 | int (*s_radio)(struct v4l2_subdev *sd); |
| 187 | int (*s_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
| 188 | int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
| 189 | int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
| 190 | int (*s_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
Eduardo Valentin | d6bacea | 2009-08-08 08:34:18 -0300 | [diff] [blame] | 191 | int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
| 192 | int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 193 | int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); |
| 194 | int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); |
| 195 | }; |
| 196 | |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 197 | /* s_clock_freq: set the frequency (in Hz) of the audio clock output. |
| 198 | Used to slave an audio processor to the video decoder, ensuring that |
| 199 | audio and video remain synchronized. Usual values for the frequency |
| 200 | are 48000, 44100 or 32000 Hz. If the frequency is not supported, then |
| 201 | -EINVAL is returned. |
| 202 | |
| 203 | s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard |
| 204 | way to select I2S clock used by driving digital audio streams at some |
| 205 | board designs. Usual values for the frequency are 1024000 and 2048000. |
| 206 | If the frequency is not supported, then -EINVAL is returned. |
| 207 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 208 | s_routing: used to define the input and/or output pins of an audio chip, |
| 209 | and any additional configuration data. |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 210 | Never attempt to use user-level input IDs (e.g. Composite, S-Video, |
| 211 | Tuner) at this level. An i2c device shouldn't know about whether an |
| 212 | input pin is connected to a Composite connector, become on another |
| 213 | board or platform it might be connected to something else entirely. |
| 214 | The calling driver is responsible for mapping a user-level input to |
| 215 | the right pins on the i2c device. |
| 216 | */ |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 217 | struct v4l2_subdev_audio_ops { |
| 218 | int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); |
| 219 | int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 220 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
Andy Walls | 3ccc646 | 2009-12-24 13:06:08 -0300 | [diff] [blame] | 221 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 222 | }; |
| 223 | |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 224 | /* |
Hans Verkuil | cc26b07 | 2009-03-29 19:20:26 -0300 | [diff] [blame] | 225 | s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 226 | video input devices. |
| 227 | |
Guennadi Liakhovetski | 9a74251 | 2009-12-11 11:41:28 -0300 | [diff] [blame] | 228 | s_crystal_freq: sets the frequency of the crystal used to generate the |
Hans Verkuil | 3ff4ad8 | 2009-04-01 03:15:52 -0300 | [diff] [blame] | 229 | clocks in Hz. An extra flags field allows device specific configuration |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 230 | regarding clock frequency dividers, etc. If not used, then set flags |
| 231 | to 0. If the frequency is not supported, then -EINVAL is returned. |
| 232 | |
Hans Verkuil | cc26b07 | 2009-03-29 19:20:26 -0300 | [diff] [blame] | 233 | g_input_status: get input status. Same as the status field in the v4l2_input |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 234 | struct. |
| 235 | |
Hans Verkuil | cc26b07 | 2009-03-29 19:20:26 -0300 | [diff] [blame] | 236 | s_routing: see s_routing in audio_ops, except this version is for video |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 237 | devices. |
Muralidharan Karicheri | b6456c0 | 2009-11-19 12:00:31 -0300 | [diff] [blame] | 238 | |
| 239 | s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to |
| 240 | s_std() |
| 241 | |
| 242 | query_dv_preset: query dv preset in the sub device. This is similar to |
| 243 | querystd() |
| 244 | |
| 245 | s_dv_timings(): Set custom dv timings in the sub device. This is used |
| 246 | when sub device is capable of setting detailed timing information |
| 247 | in the hardware to generate/detect the video signal. |
| 248 | |
| 249 | g_dv_timings(): Get custom dv timings in the sub device. |
| 250 | |
Guennadi Liakhovetski | 9a74251 | 2009-12-11 11:41:28 -0300 | [diff] [blame] | 251 | enum_mbus_fmt: enumerate pixel formats, provided by a video data source |
| 252 | |
| 253 | g_mbus_fmt: get the current pixel format, provided by a video data source |
| 254 | |
| 255 | try_mbus_fmt: try to set a pixel format on a video data source |
| 256 | |
| 257 | s_mbus_fmt: set a pixel format on a video data source |
Hans Verkuil | 78a3b4d | 2009-04-01 03:41:09 -0300 | [diff] [blame] | 258 | */ |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 259 | struct v4l2_subdev_video_ops { |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 260 | int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
Hans Verkuil | 3ff4ad8 | 2009-04-01 03:15:52 -0300 | [diff] [blame] | 261 | int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 262 | int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
Hans Verkuil | 1b6f1d9 | 2009-02-13 07:48:21 -0300 | [diff] [blame] | 263 | int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
| 264 | int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 265 | int (*s_stream)(struct v4l2_subdev *sd, int enable); |
Guennadi Liakhovetski | b7f2cef | 2009-06-24 10:31:25 -0300 | [diff] [blame] | 266 | int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc); |
| 267 | int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); |
| 268 | int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); |
Hans Verkuil | 2da9479 | 2009-02-06 18:59:35 -0300 | [diff] [blame] | 269 | int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
| 270 | int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
Laurent Pinchart | 35c3017 | 2010-05-05 11:38:35 -0300 | [diff] [blame] | 271 | int (*g_frame_interval)(struct v4l2_subdev *sd, |
| 272 | struct v4l2_subdev_frame_interval *interval); |
| 273 | int (*s_frame_interval)(struct v4l2_subdev *sd, |
| 274 | struct v4l2_subdev_frame_interval *interval); |
Hans Verkuil | 4b2ce11 | 2009-03-29 19:23:16 -0300 | [diff] [blame] | 275 | int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize); |
| 276 | int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); |
Mats Randgaard | 6003b5c | 2010-05-05 05:08:22 -0300 | [diff] [blame] | 277 | int (*enum_dv_presets) (struct v4l2_subdev *sd, |
| 278 | struct v4l2_dv_enum_preset *preset); |
Muralidharan Karicheri | b6456c0 | 2009-11-19 12:00:31 -0300 | [diff] [blame] | 279 | int (*s_dv_preset)(struct v4l2_subdev *sd, |
| 280 | struct v4l2_dv_preset *preset); |
| 281 | int (*query_dv_preset)(struct v4l2_subdev *sd, |
| 282 | struct v4l2_dv_preset *preset); |
| 283 | int (*s_dv_timings)(struct v4l2_subdev *sd, |
| 284 | struct v4l2_dv_timings *timings); |
| 285 | int (*g_dv_timings)(struct v4l2_subdev *sd, |
| 286 | struct v4l2_dv_timings *timings); |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 287 | int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index, |
Guennadi Liakhovetski | 9a74251 | 2009-12-11 11:41:28 -0300 | [diff] [blame] | 288 | enum v4l2_mbus_pixelcode *code); |
Qing Xu | 03519b7 | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 289 | int (*enum_mbus_fsizes)(struct v4l2_subdev *sd, |
| 290 | struct v4l2_frmsizeenum *fsize); |
Guennadi Liakhovetski | 9a74251 | 2009-12-11 11:41:28 -0300 | [diff] [blame] | 291 | int (*g_mbus_fmt)(struct v4l2_subdev *sd, |
| 292 | struct v4l2_mbus_framefmt *fmt); |
| 293 | int (*try_mbus_fmt)(struct v4l2_subdev *sd, |
| 294 | struct v4l2_mbus_framefmt *fmt); |
| 295 | int (*s_mbus_fmt)(struct v4l2_subdev *sd, |
| 296 | struct v4l2_mbus_framefmt *fmt); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 297 | }; |
| 298 | |
Hans Verkuil | 32cd527 | 2010-03-14 09:57:30 -0300 | [diff] [blame] | 299 | /* |
| 300 | decode_vbi_line: video decoders that support sliced VBI need to implement |
| 301 | this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the |
| 302 | start of the VBI data that was generated by the decoder. The driver |
| 303 | then parses the sliced VBI data and sets the other fields in the |
| 304 | struct accordingly. The pointer p is updated to point to the start of |
| 305 | the payload which can be copied verbatim into the data field of the |
| 306 | v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the |
| 307 | type field is set to 0 on return. |
| 308 | |
| 309 | s_vbi_data: used to generate VBI signals on a video signal. |
| 310 | v4l2_sliced_vbi_data is filled with the data packets that should be |
| 311 | output. Note that if you set the line field to 0, then that VBI signal |
| 312 | is disabled. If no valid VBI data was found, then the type field is |
| 313 | set to 0 on return. |
| 314 | |
| 315 | g_vbi_data: used to obtain the sliced VBI packet from a readback register. |
| 316 | Not all video decoders support this. If no data is available because |
| 317 | the readback register contains invalid or erroneous data -EIO is |
| 318 | returned. Note that you must fill in the 'id' member and the 'field' |
| 319 | member (to determine whether CC data from the first or second field |
| 320 | should be obtained). |
Hans Verkuil | 54aefaf | 2010-03-14 10:02:50 -0300 | [diff] [blame] | 321 | |
| 322 | s_raw_fmt: setup the video encoder/decoder for raw VBI. |
| 323 | |
| 324 | g_sliced_fmt: retrieve the current sliced VBI settings. |
| 325 | |
| 326 | s_sliced_fmt: setup the sliced VBI settings. |
Hans Verkuil | 32cd527 | 2010-03-14 09:57:30 -0300 | [diff] [blame] | 327 | */ |
| 328 | struct v4l2_subdev_vbi_ops { |
| 329 | int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); |
| 330 | int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data); |
| 331 | int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data); |
| 332 | int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap); |
Hans Verkuil | 54aefaf | 2010-03-14 10:02:50 -0300 | [diff] [blame] | 333 | int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt); |
| 334 | int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); |
| 335 | int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); |
Hans Verkuil | 32cd527 | 2010-03-14 09:57:30 -0300 | [diff] [blame] | 336 | }; |
| 337 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 338 | /** |
| 339 | * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations |
| 340 | * @g_skip_top_lines: number of lines at the top of the image to be skipped. |
| 341 | * This is needed for some sensors, which always corrupt |
| 342 | * several top lines of the output image, or which send their |
| 343 | * metadata in them. |
Laurent Pinchart | f80a3ab | 2010-11-16 01:21:06 -0300 | [diff] [blame] | 344 | * @g_skip_frames: number of frames to skip at stream start. This is needed for |
| 345 | * buggy sensors that generate faulty frames when they are |
| 346 | * turned on. |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 347 | */ |
| 348 | struct v4l2_subdev_sensor_ops { |
| 349 | int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); |
Laurent Pinchart | f80a3ab | 2010-11-16 01:21:06 -0300 | [diff] [blame] | 350 | int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames); |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 351 | }; |
| 352 | |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 353 | /* |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 354 | [rt]x_g_parameters: Get the current operating parameters and state of the |
| 355 | the IR receiver or transmitter. |
| 356 | |
| 357 | [rt]x_s_parameters: Set the current operating parameters and state of the |
| 358 | the IR receiver or transmitter. It is recommended to call |
| 359 | [rt]x_g_parameters first to fill out the current state, and only change |
| 360 | the fields that need to be changed. Upon return, the actual device |
| 361 | operating parameters and state will be returned. Note that hardware |
| 362 | limitations may prevent the actual settings from matching the requested |
| 363 | settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz |
| 364 | was requested. An exception is when the shutdown parameter is true. |
| 365 | The last used operational parameters will be returned, but the actual |
| 366 | state of the hardware be different to minimize power consumption and |
| 367 | processing when shutdown is true. |
| 368 | |
| 369 | rx_read: Reads received codes or pulse width data. |
| 370 | The semantics are similar to a non-blocking read() call. |
| 371 | |
| 372 | tx_write: Writes codes or pulse width data for transmission. |
| 373 | The semantics are similar to a non-blocking write() call. |
| 374 | */ |
| 375 | |
| 376 | enum v4l2_subdev_ir_mode { |
Andy Walls | d69e85b | 2010-08-01 02:36:20 -0300 | [diff] [blame] | 377 | V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */ |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 378 | }; |
| 379 | |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 380 | struct v4l2_subdev_ir_parameters { |
| 381 | /* Either Rx or Tx */ |
| 382 | unsigned int bytes_per_data_element; /* of data in read or write call */ |
| 383 | enum v4l2_subdev_ir_mode mode; |
| 384 | |
| 385 | bool enable; |
| 386 | bool interrupt_enable; |
| 387 | bool shutdown; /* true: set hardware to low/no power, false: normal */ |
| 388 | |
| 389 | bool modulation; /* true: uses carrier, false: baseband */ |
| 390 | u32 max_pulse_width; /* ns, valid only for baseband signal */ |
| 391 | unsigned int carrier_freq; /* Hz, valid only for modulated signal*/ |
| 392 | unsigned int duty_cycle; /* percent, valid only for modulated signal*/ |
Andy Walls | 5a28d9a | 2010-07-18 19:57:25 -0300 | [diff] [blame] | 393 | bool invert_level; /* invert signal level */ |
| 394 | |
| 395 | /* Tx only */ |
| 396 | bool invert_carrier_sense; /* Send 0/space as a carrier burst */ |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 397 | |
| 398 | /* Rx only */ |
| 399 | u32 noise_filter_min_width; /* ns, min time of a valid pulse */ |
| 400 | unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */ |
| 401 | unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */ |
| 402 | u32 resolution; /* ns */ |
| 403 | }; |
| 404 | |
| 405 | struct v4l2_subdev_ir_ops { |
Andy Walls | 1d986ad | 2009-09-27 17:50:04 -0300 | [diff] [blame] | 406 | /* Receiver */ |
| 407 | int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, |
| 408 | ssize_t *num); |
| 409 | |
| 410 | int (*rx_g_parameters)(struct v4l2_subdev *sd, |
| 411 | struct v4l2_subdev_ir_parameters *params); |
| 412 | int (*rx_s_parameters)(struct v4l2_subdev *sd, |
| 413 | struct v4l2_subdev_ir_parameters *params); |
| 414 | |
| 415 | /* Transmitter */ |
| 416 | int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, |
| 417 | ssize_t *num); |
| 418 | |
| 419 | int (*tx_g_parameters)(struct v4l2_subdev *sd, |
| 420 | struct v4l2_subdev_ir_parameters *params); |
| 421 | int (*tx_s_parameters)(struct v4l2_subdev *sd, |
| 422 | struct v4l2_subdev_ir_parameters *params); |
| 423 | }; |
| 424 | |
Laurent Pinchart | eb08f35 | 2009-12-09 08:39:52 -0300 | [diff] [blame] | 425 | struct v4l2_subdev_pad_ops { |
Laurent Pinchart | 333c8b9 | 2010-03-15 20:26:04 -0300 | [diff] [blame] | 426 | int (*enum_mbus_code)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 427 | struct v4l2_subdev_mbus_code_enum *code); |
| 428 | int (*enum_frame_size)(struct v4l2_subdev *sd, |
| 429 | struct v4l2_subdev_fh *fh, |
| 430 | struct v4l2_subdev_frame_size_enum *fse); |
Laurent Pinchart | 35c3017 | 2010-05-05 11:38:35 -0300 | [diff] [blame] | 431 | int (*enum_frame_interval)(struct v4l2_subdev *sd, |
| 432 | struct v4l2_subdev_fh *fh, |
| 433 | struct v4l2_subdev_frame_interval_enum *fie); |
Laurent Pinchart | 333c8b9 | 2010-03-15 20:26:04 -0300 | [diff] [blame] | 434 | int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 435 | struct v4l2_subdev_format *format); |
| 436 | int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 437 | struct v4l2_subdev_format *format); |
Antti Koskipaa | f6a5cb1 | 2010-06-23 05:03:42 -0300 | [diff] [blame] | 438 | int (*set_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 439 | struct v4l2_subdev_crop *crop); |
| 440 | int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 441 | struct v4l2_subdev_crop *crop); |
Laurent Pinchart | eb08f35 | 2009-12-09 08:39:52 -0300 | [diff] [blame] | 442 | }; |
| 443 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 444 | struct v4l2_subdev_ops { |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 445 | const struct v4l2_subdev_core_ops *core; |
| 446 | const struct v4l2_subdev_tuner_ops *tuner; |
| 447 | const struct v4l2_subdev_audio_ops *audio; |
| 448 | const struct v4l2_subdev_video_ops *video; |
Hans Verkuil | 32cd527 | 2010-03-14 09:57:30 -0300 | [diff] [blame] | 449 | const struct v4l2_subdev_vbi_ops *vbi; |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 450 | const struct v4l2_subdev_ir_ops *ir; |
| 451 | const struct v4l2_subdev_sensor_ops *sensor; |
Laurent Pinchart | eb08f35 | 2009-12-09 08:39:52 -0300 | [diff] [blame] | 452 | const struct v4l2_subdev_pad_ops *pad; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 453 | }; |
| 454 | |
Hans Verkuil | 45f6f84 | 2011-01-08 07:15:53 -0300 | [diff] [blame] | 455 | /* |
| 456 | * Internal ops. Never call this from drivers, only the v4l2 framework can call |
| 457 | * these ops. |
| 458 | * |
| 459 | * registered: called when this subdev is registered. When called the v4l2_dev |
| 460 | * field is set to the correct v4l2_device. |
| 461 | * |
| 462 | * unregistered: called when this subdev is unregistered. When called the |
| 463 | * v4l2_dev field is still set to the correct v4l2_device. |
Laurent Pinchart | f0beea8 | 2010-08-01 19:05:09 -0300 | [diff] [blame] | 464 | * |
| 465 | * open: called when the subdev device node is opened by an application. |
| 466 | * |
| 467 | * close: called when the subdev device node is closed. |
Hans Verkuil | 45f6f84 | 2011-01-08 07:15:53 -0300 | [diff] [blame] | 468 | */ |
| 469 | struct v4l2_subdev_internal_ops { |
| 470 | int (*registered)(struct v4l2_subdev *sd); |
| 471 | void (*unregistered)(struct v4l2_subdev *sd); |
Laurent Pinchart | f0beea8 | 2010-08-01 19:05:09 -0300 | [diff] [blame] | 472 | int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
| 473 | int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
Hans Verkuil | 45f6f84 | 2011-01-08 07:15:53 -0300 | [diff] [blame] | 474 | }; |
| 475 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 476 | #define V4L2_SUBDEV_NAME_SIZE 32 |
| 477 | |
Hans Verkuil | b5b2b7e | 2009-05-02 10:58:51 -0300 | [diff] [blame] | 478 | /* Set this flag if this subdev is a i2c device. */ |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 479 | #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
Dmitri Belimov | 85e0921 | 2010-03-23 11:23:29 -0300 | [diff] [blame] | 480 | /* Set this flag if this subdev is a spi device. */ |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 481 | #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) |
| 482 | /* Set this flag if this subdev needs a device node. */ |
| 483 | #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) |
Sakari Ailus | 02adb1c | 2010-03-03 12:49:38 -0300 | [diff] [blame] | 484 | /* Set this flag if this subdev generates events. */ |
| 485 | #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) |
Hans Verkuil | b5b2b7e | 2009-05-02 10:58:51 -0300 | [diff] [blame] | 486 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 487 | /* Each instance of a subdev driver should create this struct, either |
| 488 | stand-alone or embedded in a larger struct. |
| 489 | */ |
| 490 | struct v4l2_subdev { |
Laurent Pinchart | 61f5db5 | 2009-12-09 08:40:08 -0300 | [diff] [blame] | 491 | #if defined(CONFIG_MEDIA_CONTROLLER) |
| 492 | struct media_entity entity; |
| 493 | #endif |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 494 | struct list_head list; |
| 495 | struct module *owner; |
Hans Verkuil | b5b2b7e | 2009-05-02 10:58:51 -0300 | [diff] [blame] | 496 | u32 flags; |
Hans Verkuil | b016760 | 2009-02-14 12:00:53 -0300 | [diff] [blame] | 497 | struct v4l2_device *v4l2_dev; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 498 | const struct v4l2_subdev_ops *ops; |
Hans Verkuil | 45f6f84 | 2011-01-08 07:15:53 -0300 | [diff] [blame] | 499 | /* Never call these internal ops from within a driver! */ |
| 500 | const struct v4l2_subdev_internal_ops *internal_ops; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 501 | /* The control handler of this subdev. May be NULL. */ |
| 502 | struct v4l2_ctrl_handler *ctrl_handler; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 503 | /* name must be unique */ |
| 504 | char name[V4L2_SUBDEV_NAME_SIZE]; |
| 505 | /* can be used to group similar subdevs, value is driver-specific */ |
| 506 | u32 grp_id; |
| 507 | /* pointer to private data */ |
Laurent Pinchart | 692d552 | 2010-07-30 17:24:55 -0300 | [diff] [blame] | 508 | void *dev_priv; |
| 509 | void *host_priv; |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 510 | /* subdev device node */ |
| 511 | struct video_device devnode; |
Sakari Ailus | 02adb1c | 2010-03-03 12:49:38 -0300 | [diff] [blame] | 512 | /* number of events to be allocated on open */ |
| 513 | unsigned int nevents; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 514 | }; |
| 515 | |
Laurent Pinchart | 61f5db5 | 2009-12-09 08:40:08 -0300 | [diff] [blame] | 516 | #define media_entity_to_v4l2_subdev(ent) \ |
| 517 | container_of(ent, struct v4l2_subdev, entity) |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 518 | #define vdev_to_v4l2_subdev(vdev) \ |
| 519 | container_of(vdev, struct v4l2_subdev, devnode) |
| 520 | |
Stanimir Varbanov | 7cd5a16 | 2010-05-21 06:04:24 -0300 | [diff] [blame] | 521 | /* |
| 522 | * Used for storing subdev information per file handle |
| 523 | */ |
| 524 | struct v4l2_subdev_fh { |
| 525 | struct v4l2_fh vfh; |
| 526 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
| 527 | struct v4l2_mbus_framefmt *try_fmt; |
| 528 | struct v4l2_rect *try_crop; |
| 529 | #endif |
| 530 | }; |
| 531 | |
| 532 | #define to_v4l2_subdev_fh(fh) \ |
| 533 | container_of(fh, struct v4l2_subdev_fh, vfh) |
| 534 | |
| 535 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
| 536 | static inline struct v4l2_mbus_framefmt * |
| 537 | v4l2_subdev_get_try_format(struct v4l2_subdev_fh *fh, unsigned int pad) |
| 538 | { |
| 539 | return &fh->try_fmt[pad]; |
| 540 | } |
| 541 | |
| 542 | static inline struct v4l2_rect * |
| 543 | v4l2_subdev_get_try_crop(struct v4l2_subdev_fh *fh, unsigned int pad) |
| 544 | { |
| 545 | return &fh->try_crop[pad]; |
| 546 | } |
| 547 | #endif |
| 548 | |
Laurent Pinchart | 2096a5d | 2009-12-09 08:38:49 -0300 | [diff] [blame] | 549 | extern const struct v4l2_file_operations v4l2_subdev_fops; |
| 550 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 551 | static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
| 552 | { |
Laurent Pinchart | 692d552 | 2010-07-30 17:24:55 -0300 | [diff] [blame] | 553 | sd->dev_priv = p; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 554 | } |
| 555 | |
| 556 | static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) |
| 557 | { |
Laurent Pinchart | 692d552 | 2010-07-30 17:24:55 -0300 | [diff] [blame] | 558 | return sd->dev_priv; |
| 559 | } |
| 560 | |
| 561 | static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) |
| 562 | { |
| 563 | sd->host_priv = p; |
| 564 | } |
| 565 | |
| 566 | static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) |
| 567 | { |
| 568 | return sd->host_priv; |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 569 | } |
| 570 | |
Laurent Pinchart | 3dd5ee0 | 2009-12-09 08:38:52 -0300 | [diff] [blame] | 571 | void v4l2_subdev_init(struct v4l2_subdev *sd, |
| 572 | const struct v4l2_subdev_ops *ops); |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 573 | |
| 574 | /* Call an ops of a v4l2_subdev, doing the right checks against |
| 575 | NULL pointers. |
| 576 | |
| 577 | Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip); |
| 578 | */ |
| 579 | #define v4l2_subdev_call(sd, o, f, args...) \ |
Hans Verkuil | dbc8e34 | 2009-06-09 17:34:01 -0300 | [diff] [blame] | 580 | (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 581 | (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) |
| 582 | |
Hans Verkuil | 98ec633 | 2009-03-08 17:02:10 -0300 | [diff] [blame] | 583 | /* Send a notification to v4l2_device. */ |
| 584 | #define v4l2_subdev_notify(sd, notification, arg) \ |
| 585 | ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ |
| 586 | (sd)->v4l2_dev->notify((sd), (notification), (arg))) |
| 587 | |
Hans Verkuil | 2a1fcdf | 2008-11-29 21:36:58 -0300 | [diff] [blame] | 588 | #endif |