| /* |
| V4L2 sub-device support header. |
| |
| Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef _V4L2_SUBDEV_H |
| #define _V4L2_SUBDEV_H |
| |
| #include <linux/v4l2-subdev.h> |
| #include <media/media-entity.h> |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-dev.h> |
| #include <media/v4l2-fh.h> |
| #include <media/v4l2-mediabus.h> |
| |
| /* generic v4l2_device notify callback notification values */ |
| #define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32) |
| #define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001 |
| #define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002 |
| #define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004 |
| #define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008 |
| |
| #define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32) |
| #define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001 |
| |
| struct v4l2_device; |
| struct v4l2_ctrl_handler; |
| struct v4l2_event_subscription; |
| struct v4l2_fh; |
| struct v4l2_subdev; |
| struct v4l2_subdev_fh; |
| struct tuner_setup; |
| |
| /* decode_vbi_line */ |
| struct v4l2_decode_vbi_line { |
| u32 is_second_field; /* Set to 0 for the first (odd) field, |
| set to 1 for the second (even) field. */ |
| u8 *p; /* Pointer to the sliced VBI data from the decoder. |
| On exit points to the start of the payload. */ |
| u32 line; /* Line number of the sliced VBI data (1-23) */ |
| u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ |
| }; |
| |
| /* Sub-devices are devices that are connected somehow to the main bridge |
| device. These devices are usually audio/video muxers/encoders/decoders or |
| sensors and webcam controllers. |
| |
| Usually these devices are controlled through an i2c bus, but other busses |
| may also be used. |
| |
| The v4l2_subdev struct provides a way of accessing these devices in a |
| generic manner. Most operations that these sub-devices support fall in |
| a few categories: core ops, audio ops, video ops and tuner ops. |
| |
| More categories can be added if needed, although this should remain a |
| limited set (no more than approx. 8 categories). |
| |
| Each category has its own set of ops that subdev drivers can implement. |
| |
| A subdev driver can leave the pointer to the category ops NULL if |
| it does not implement them (e.g. an audio subdev will generally not |
| implement the video category ops). The exception is the core category: |
| this must always be present. |
| |
| These ops are all used internally so it is no problem to change, remove |
| or add ops or move ops from one to another category. Currently these |
| ops are based on the original ioctls, but since ops are not limited to |
| one argument there is room for improvement here once all i2c subdev |
| drivers are converted to use these ops. |
| */ |
| |
| /* Core ops: it is highly recommended to implement at least these ops: |
| |
| g_chip_ident |
| log_status |
| g_register |
| s_register |
| |
| This provides basic debugging support. |
| |
| The ioctl ops is meant for generic ioctl-like commands. Depending on |
| the use-case it might be better to use subdev-specific ops (currently |
| not yet implemented) since ops provide proper type-checking. |
| */ |
| |
| /* Subdevice external IO pin configuration */ |
| #define V4L2_SUBDEV_IO_PIN_DISABLE (1 << 0) /* ENABLE assumed */ |
| #define V4L2_SUBDEV_IO_PIN_OUTPUT (1 << 1) |
| #define V4L2_SUBDEV_IO_PIN_INPUT (1 << 2) |
| #define V4L2_SUBDEV_IO_PIN_SET_VALUE (1 << 3) /* Set output value */ |
| #define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW (1 << 4) /* ACTIVE HIGH assumed */ |
| |
| struct v4l2_subdev_io_pin_config { |
| u32 flags; /* V4L2_SUBDEV_IO_PIN_* flags for this pin's config */ |
| u8 pin; /* Chip external IO pin to configure */ |
| u8 function; /* Internal signal pad/function to route to IO pin */ |
| u8 value; /* Initial value for pin - e.g. GPIO output value */ |
| u8 strength; /* Pin drive strength */ |
| }; |
| |
| /* |
| s_io_pin_config: configure one or more chip I/O pins for chips that |
| multiplex different internal signal pads out to IO pins. This function |
| takes a pointer to an array of 'n' pin configuration entries, one for |
| each pin being configured. This function could be called at times |
| other than just subdevice initialization. |
| |
| init: initialize the sensor registors to some sort of reasonable default |
| values. Do not use for new drivers and should be removed in existing |
| drivers. |
| |
| load_fw: load firmware. |
| |
| reset: generic reset command. The argument selects which subsystems to |
| reset. Passing 0 will always reset the whole chip. Do not use for new |
| drivers without discussing this first on the linux-media mailinglist. |
| There should be no reason normally to reset a device. |
| |
| s_gpio: set GPIO pins. Very simple right now, might need to be extended with |
| a direction argument if needed. |
| |
| s_power: puts subdevice in power saving mode (on == 0) or normal operation |
| mode (on == 1). |
| |
| interrupt_service_routine: Called by the bridge chip's interrupt service |
| handler, when an interrupt status has be raised due to this subdev, |
| so that this subdev can handle the details. It may schedule work to be |
| performed later. It must not sleep. *Called from an IRQ context*. |
| */ |
| struct v4l2_subdev_core_ops { |
| int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); |
| int (*log_status)(struct v4l2_subdev *sd); |
| int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n, |
| struct v4l2_subdev_io_pin_config *pincfg); |
| int (*init)(struct v4l2_subdev *sd, u32 val); |
| int (*load_fw)(struct v4l2_subdev *sd); |
| int (*reset)(struct v4l2_subdev *sd, u32 val); |
| int (*s_gpio)(struct v4l2_subdev *sd, u32 val); |
| int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); |
| int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); |
| int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl); |
| int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
| int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
| int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); |
| int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); |
| int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); |
| long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
| int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); |
| #endif |
| int (*s_power)(struct v4l2_subdev *sd, int on); |
| int (*interrupt_service_routine)(struct v4l2_subdev *sd, |
| u32 status, bool *handled); |
| int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
| struct v4l2_event_subscription *sub); |
| int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
| struct v4l2_event_subscription *sub); |
| }; |
| |
| /* s_radio: v4l device was opened in radio mode. |
| |
| g_frequency: freq->type must be filled in. Normally done by video_ioctl2 |
| or the bridge driver. |
| |
| g_tuner: |
| s_tuner: vt->type must be filled in. Normally done by video_ioctl2 or the |
| bridge driver. |
| |
| s_type_addr: sets tuner type and its I2C addr. |
| |
| s_config: sets tda9887 specific stuff, like port1, port2 and qss |
| */ |
| struct v4l2_subdev_tuner_ops { |
| int (*s_radio)(struct v4l2_subdev *sd); |
| int (*s_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
| int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); |
| int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
| int (*s_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); |
| int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
| int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); |
| int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); |
| int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); |
| }; |
| |
| /* s_clock_freq: set the frequency (in Hz) of the audio clock output. |
| Used to slave an audio processor to the video decoder, ensuring that |
| audio and video remain synchronized. Usual values for the frequency |
| are 48000, 44100 or 32000 Hz. If the frequency is not supported, then |
| -EINVAL is returned. |
| |
| s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard |
| way to select I2S clock used by driving digital audio streams at some |
| board designs. Usual values for the frequency are 1024000 and 2048000. |
| If the frequency is not supported, then -EINVAL is returned. |
| |
| s_routing: used to define the input and/or output pins of an audio chip, |
| and any additional configuration data. |
| Never attempt to use user-level input IDs (e.g. Composite, S-Video, |
| Tuner) at this level. An i2c device shouldn't know about whether an |
| input pin is connected to a Composite connector, become on another |
| board or platform it might be connected to something else entirely. |
| The calling driver is responsible for mapping a user-level input to |
| the right pins on the i2c device. |
| */ |
| struct v4l2_subdev_audio_ops { |
| int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); |
| int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); |
| int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
| int (*s_stream)(struct v4l2_subdev *sd, int enable); |
| }; |
| |
| /* |
| s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by |
| video input devices. |
| |
| g_tvnorms_output: get v4l2_std_id with all standards supported by video |
| OUTPUT device. This is ignored by video input devices. |
| |
| s_crystal_freq: sets the frequency of the crystal used to generate the |
| clocks in Hz. An extra flags field allows device specific configuration |
| regarding clock frequency dividers, etc. If not used, then set flags |
| to 0. If the frequency is not supported, then -EINVAL is returned. |
| |
| g_input_status: get input status. Same as the status field in the v4l2_input |
| struct. |
| |
| s_routing: see s_routing in audio_ops, except this version is for video |
| devices. |
| |
| s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to |
| s_std() |
| |
| query_dv_preset: query dv preset in the sub device. This is similar to |
| querystd() |
| |
| s_dv_timings(): Set custom dv timings in the sub device. This is used |
| when sub device is capable of setting detailed timing information |
| in the hardware to generate/detect the video signal. |
| |
| g_dv_timings(): Get custom dv timings in the sub device. |
| |
| enum_mbus_fmt: enumerate pixel formats, provided by a video data source |
| |
| g_mbus_fmt: get the current pixel format, provided by a video data source |
| |
| try_mbus_fmt: try to set a pixel format on a video data source |
| |
| s_mbus_fmt: set a pixel format on a video data source |
| */ |
| struct v4l2_subdev_video_ops { |
| int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); |
| int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags); |
| int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); |
| int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); |
| int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std); |
| int (*g_input_status)(struct v4l2_subdev *sd, u32 *status); |
| int (*s_stream)(struct v4l2_subdev *sd, int enable); |
| int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc); |
| int (*g_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); |
| int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop); |
| int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
| int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param); |
| int (*g_frame_interval)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval); |
| int (*s_frame_interval)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval); |
| int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize); |
| int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); |
| int (*enum_dv_presets) (struct v4l2_subdev *sd, |
| struct v4l2_dv_enum_preset *preset); |
| int (*s_dv_preset)(struct v4l2_subdev *sd, |
| struct v4l2_dv_preset *preset); |
| int (*query_dv_preset)(struct v4l2_subdev *sd, |
| struct v4l2_dv_preset *preset); |
| int (*s_dv_timings)(struct v4l2_subdev *sd, |
| struct v4l2_dv_timings *timings); |
| int (*g_dv_timings)(struct v4l2_subdev *sd, |
| struct v4l2_dv_timings *timings); |
| int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index, |
| enum v4l2_mbus_pixelcode *code); |
| int (*enum_mbus_fsizes)(struct v4l2_subdev *sd, |
| struct v4l2_frmsizeenum *fsize); |
| int (*g_mbus_fmt)(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *fmt); |
| int (*try_mbus_fmt)(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *fmt); |
| int (*s_mbus_fmt)(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *fmt); |
| }; |
| |
| /* |
| decode_vbi_line: video decoders that support sliced VBI need to implement |
| this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the |
| start of the VBI data that was generated by the decoder. The driver |
| then parses the sliced VBI data and sets the other fields in the |
| struct accordingly. The pointer p is updated to point to the start of |
| the payload which can be copied verbatim into the data field of the |
| v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the |
| type field is set to 0 on return. |
| |
| s_vbi_data: used to generate VBI signals on a video signal. |
| v4l2_sliced_vbi_data is filled with the data packets that should be |
| output. Note that if you set the line field to 0, then that VBI signal |
| is disabled. If no valid VBI data was found, then the type field is |
| set to 0 on return. |
| |
| g_vbi_data: used to obtain the sliced VBI packet from a readback register. |
| Not all video decoders support this. If no data is available because |
| the readback register contains invalid or erroneous data -EIO is |
| returned. Note that you must fill in the 'id' member and the 'field' |
| member (to determine whether CC data from the first or second field |
| should be obtained). |
| |
| s_raw_fmt: setup the video encoder/decoder for raw VBI. |
| |
| g_sliced_fmt: retrieve the current sliced VBI settings. |
| |
| s_sliced_fmt: setup the sliced VBI settings. |
| */ |
| struct v4l2_subdev_vbi_ops { |
| int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); |
| int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data); |
| int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data); |
| int (*g_sliced_vbi_cap)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_cap *cap); |
| int (*s_raw_fmt)(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt); |
| int (*g_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); |
| int (*s_sliced_fmt)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt); |
| }; |
| |
| /** |
| * struct v4l2_subdev_sensor_ops - v4l2-subdev sensor operations |
| * @g_skip_top_lines: number of lines at the top of the image to be skipped. |
| * This is needed for some sensors, which always corrupt |
| * several top lines of the output image, or which send their |
| * metadata in them. |
| * @g_skip_frames: number of frames to skip at stream start. This is needed for |
| * buggy sensors that generate faulty frames when they are |
| * turned on. |
| */ |
| struct v4l2_subdev_sensor_ops { |
| int (*g_skip_top_lines)(struct v4l2_subdev *sd, u32 *lines); |
| int (*g_skip_frames)(struct v4l2_subdev *sd, u32 *frames); |
| }; |
| |
| /* |
| [rt]x_g_parameters: Get the current operating parameters and state of the |
| the IR receiver or transmitter. |
| |
| [rt]x_s_parameters: Set the current operating parameters and state of the |
| the IR receiver or transmitter. It is recommended to call |
| [rt]x_g_parameters first to fill out the current state, and only change |
| the fields that need to be changed. Upon return, the actual device |
| operating parameters and state will be returned. Note that hardware |
| limitations may prevent the actual settings from matching the requested |
| settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz |
| was requested. An exception is when the shutdown parameter is true. |
| The last used operational parameters will be returned, but the actual |
| state of the hardware be different to minimize power consumption and |
| processing when shutdown is true. |
| |
| rx_read: Reads received codes or pulse width data. |
| The semantics are similar to a non-blocking read() call. |
| |
| tx_write: Writes codes or pulse width data for transmission. |
| The semantics are similar to a non-blocking write() call. |
| */ |
| |
| enum v4l2_subdev_ir_mode { |
| V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* uses struct ir_raw_event records */ |
| }; |
| |
| struct v4l2_subdev_ir_parameters { |
| /* Either Rx or Tx */ |
| unsigned int bytes_per_data_element; /* of data in read or write call */ |
| enum v4l2_subdev_ir_mode mode; |
| |
| bool enable; |
| bool interrupt_enable; |
| bool shutdown; /* true: set hardware to low/no power, false: normal */ |
| |
| bool modulation; /* true: uses carrier, false: baseband */ |
| u32 max_pulse_width; /* ns, valid only for baseband signal */ |
| unsigned int carrier_freq; /* Hz, valid only for modulated signal*/ |
| unsigned int duty_cycle; /* percent, valid only for modulated signal*/ |
| bool invert_level; /* invert signal level */ |
| |
| /* Tx only */ |
| bool invert_carrier_sense; /* Send 0/space as a carrier burst */ |
| |
| /* Rx only */ |
| u32 noise_filter_min_width; /* ns, min time of a valid pulse */ |
| unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */ |
| unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */ |
| u32 resolution; /* ns */ |
| }; |
| |
| struct v4l2_subdev_ir_ops { |
| /* Receiver */ |
| int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, |
| ssize_t *num); |
| |
| int (*rx_g_parameters)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_ir_parameters *params); |
| int (*rx_s_parameters)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_ir_parameters *params); |
| |
| /* Transmitter */ |
| int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, |
| ssize_t *num); |
| |
| int (*tx_g_parameters)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_ir_parameters *params); |
| int (*tx_s_parameters)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_ir_parameters *params); |
| }; |
| |
| struct v4l2_subdev_pad_ops { |
| int (*enum_mbus_code)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_mbus_code_enum *code); |
| int (*enum_frame_size)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_frame_size_enum *fse); |
| int (*enum_frame_interval)(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_frame_interval_enum *fie); |
| int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_format *format); |
| int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_format *format); |
| int (*set_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_crop *crop); |
| int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_crop *crop); |
| }; |
| |
| struct v4l2_subdev_ops { |
| const struct v4l2_subdev_core_ops *core; |
| const struct v4l2_subdev_tuner_ops *tuner; |
| const struct v4l2_subdev_audio_ops *audio; |
| const struct v4l2_subdev_video_ops *video; |
| const struct v4l2_subdev_vbi_ops *vbi; |
| const struct v4l2_subdev_ir_ops *ir; |
| const struct v4l2_subdev_sensor_ops *sensor; |
| const struct v4l2_subdev_pad_ops *pad; |
| }; |
| |
| /* |
| * Internal ops. Never call this from drivers, only the v4l2 framework can call |
| * these ops. |
| * |
| * registered: called when this subdev is registered. When called the v4l2_dev |
| * field is set to the correct v4l2_device. |
| * |
| * unregistered: called when this subdev is unregistered. When called the |
| * v4l2_dev field is still set to the correct v4l2_device. |
| * |
| * open: called when the subdev device node is opened by an application. |
| * |
| * close: called when the subdev device node is closed. |
| */ |
| struct v4l2_subdev_internal_ops { |
| int (*registered)(struct v4l2_subdev *sd); |
| void (*unregistered)(struct v4l2_subdev *sd); |
| int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
| int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh); |
| }; |
| |
| #define V4L2_SUBDEV_NAME_SIZE 32 |
| |
| /* Set this flag if this subdev is a i2c device. */ |
| #define V4L2_SUBDEV_FL_IS_I2C (1U << 0) |
| /* Set this flag if this subdev is a spi device. */ |
| #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) |
| /* Set this flag if this subdev needs a device node. */ |
| #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) |
| /* Set this flag if this subdev generates events. */ |
| #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) |
| |
| /* Each instance of a subdev driver should create this struct, either |
| stand-alone or embedded in a larger struct. |
| */ |
| struct v4l2_subdev { |
| #if defined(CONFIG_MEDIA_CONTROLLER) |
| struct media_entity entity; |
| #endif |
| struct list_head list; |
| struct module *owner; |
| u32 flags; |
| struct v4l2_device *v4l2_dev; |
| const struct v4l2_subdev_ops *ops; |
| /* Never call these internal ops from within a driver! */ |
| const struct v4l2_subdev_internal_ops *internal_ops; |
| /* The control handler of this subdev. May be NULL. */ |
| struct v4l2_ctrl_handler *ctrl_handler; |
| /* name must be unique */ |
| char name[V4L2_SUBDEV_NAME_SIZE]; |
| /* can be used to group similar subdevs, value is driver-specific */ |
| u32 grp_id; |
| /* pointer to private data */ |
| void *dev_priv; |
| void *host_priv; |
| /* subdev device node */ |
| struct video_device devnode; |
| }; |
| |
| #define media_entity_to_v4l2_subdev(ent) \ |
| container_of(ent, struct v4l2_subdev, entity) |
| #define vdev_to_v4l2_subdev(vdev) \ |
| container_of(vdev, struct v4l2_subdev, devnode) |
| |
| /* |
| * Used for storing subdev information per file handle |
| */ |
| struct v4l2_subdev_fh { |
| struct v4l2_fh vfh; |
| #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
| struct v4l2_mbus_framefmt *try_fmt; |
| struct v4l2_rect *try_crop; |
| #endif |
| }; |
| |
| #define to_v4l2_subdev_fh(fh) \ |
| container_of(fh, struct v4l2_subdev_fh, vfh) |
| |
| #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
| static inline struct v4l2_mbus_framefmt * |
| v4l2_subdev_get_try_format(struct v4l2_subdev_fh *fh, unsigned int pad) |
| { |
| return &fh->try_fmt[pad]; |
| } |
| |
| static inline struct v4l2_rect * |
| v4l2_subdev_get_try_crop(struct v4l2_subdev_fh *fh, unsigned int pad) |
| { |
| return &fh->try_crop[pad]; |
| } |
| #endif |
| |
| extern const struct v4l2_file_operations v4l2_subdev_fops; |
| |
| static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) |
| { |
| sd->dev_priv = p; |
| } |
| |
| static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) |
| { |
| return sd->dev_priv; |
| } |
| |
| static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) |
| { |
| sd->host_priv = p; |
| } |
| |
| static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) |
| { |
| return sd->host_priv; |
| } |
| |
| void v4l2_subdev_init(struct v4l2_subdev *sd, |
| const struct v4l2_subdev_ops *ops); |
| |
| /* Call an ops of a v4l2_subdev, doing the right checks against |
| NULL pointers. |
| |
| Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip); |
| */ |
| #define v4l2_subdev_call(sd, o, f, args...) \ |
| (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ |
| (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) |
| |
| /* Send a notification to v4l2_device. */ |
| #define v4l2_subdev_notify(sd, notification, arg) \ |
| ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ |
| (sd)->v4l2_dev->notify((sd), (notification), (arg))) |
| |
| #endif |