| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hans Verkuil | 1427 | 42.23% | 36 | 25.35% |
| Laurent Pinchart | 489 | 14.47% | 23 | 16.20% |
| Tomi Valkeinen | 479 | 14.18% | 19 | 13.38% |
| Sakari Ailus | 314 | 9.29% | 17 | 11.97% |
| Andy Walls | 228 | 6.75% | 5 | 3.52% |
| Mauro Carvalho Chehab | 85 | 2.52% | 10 | 7.04% |
| Sylwester Nawrocki | 85 | 2.52% | 3 | 2.11% |
| Guennadi Liakhovetski | 71 | 2.10% | 8 | 5.63% |
| Jacopo Mondi | 34 | 1.01% | 2 | 1.41% |
| Stanimir Varbanov | 33 | 0.98% | 1 | 0.70% |
| Steve Longerbeam | 22 | 0.65% | 1 | 0.70% |
| Eduardo Valentin | 19 | 0.56% | 1 | 0.70% |
| Murali Karicheri | 18 | 0.53% | 1 | 0.70% |
| Tomasz Stanislawski | 16 | 0.47% | 2 | 1.41% |
| Lars-Peter Clausen | 15 | 0.44% | 1 | 0.70% |
| Antti Palosaari | 9 | 0.27% | 1 | 0.70% |
| Hans de Goede | 8 | 0.24% | 1 | 0.70% |
| Janusz Krzysztofik | 7 | 0.21% | 1 | 0.70% |
| Dmitry Belimov | 5 | 0.15% | 1 | 0.70% |
| Jean-Michel Hautbois | 4 | 0.12% | 1 | 0.70% |
| Arnd Bergmann | 4 | 0.12% | 1 | 0.70% |
| Thomas Gleixner | 2 | 0.06% | 1 | 0.70% |
| Randy Dunlap | 1 | 0.03% | 1 | 0.70% |
| Jonathan Neuschäfer | 1 | 0.03% | 1 | 0.70% |
| Colton Lewis | 1 | 0.03% | 1 | 0.70% |
| Luca Ceresoli | 1 | 0.03% | 1 | 0.70% |
| Kieran Bingham | 1 | 0.03% | 1 | 0.70% |
| Total | 3379 | 142 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * V4L2 sub-device support header. * * Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl> */ #ifndef _V4L2_SUBDEV_H #define _V4L2_SUBDEV_H #include <linux/types.h> #include <linux/v4l2-subdev.h> #include <media/media-entity.h> #include <media/v4l2-async.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 #define V4L2_DEVICE_NOTIFY_EVENT _IOW('v', 2, struct v4l2_event) struct v4l2_device; struct v4l2_ctrl_handler; struct v4l2_event; struct v4l2_event_subscription; struct v4l2_fh; struct v4l2_subdev; struct v4l2_subdev_fh; struct tuner_setup; struct v4l2_mbus_frame_desc; struct led_classdev; /** * struct v4l2_decode_vbi_line - used to decode_vbi_line * * @is_second_field: Set to 0 for the first (odd) field; * set to 1 for the second (even) field. * @p: Pointer to the sliced VBI data from the decoder. On exit, points to * the start of the payload. * @line: Line number of the sliced VBI data (1-23) * @type: VBI service type (V4L2_SLICED_*). 0 if no service found */ struct v4l2_decode_vbi_line { u32 is_second_field; u8 *p; u32 line; u32 type; }; /* * 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 buses * 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: * * 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. */ /** * enum v4l2_subdev_io_pin_bits - Subdevice external IO pin configuration * bits * * @V4L2_SUBDEV_IO_PIN_DISABLE: disables a pin config. ENABLE assumed. * @V4L2_SUBDEV_IO_PIN_OUTPUT: set it if pin is an output. * @V4L2_SUBDEV_IO_PIN_INPUT: set it if pin is an input. * @V4L2_SUBDEV_IO_PIN_SET_VALUE: to set the output value via * &struct v4l2_subdev_io_pin_config->value. * @V4L2_SUBDEV_IO_PIN_ACTIVE_LOW: pin active is bit 0. * Otherwise, ACTIVE HIGH is assumed. */ enum v4l2_subdev_io_pin_bits { V4L2_SUBDEV_IO_PIN_DISABLE = 0, V4L2_SUBDEV_IO_PIN_OUTPUT = 1, V4L2_SUBDEV_IO_PIN_INPUT = 2, V4L2_SUBDEV_IO_PIN_SET_VALUE = 3, V4L2_SUBDEV_IO_PIN_ACTIVE_LOW = 4, }; /** * struct v4l2_subdev_io_pin_config - Subdevice external IO pin configuration * * @flags: bitmask with flags for this pin's config, whose bits are defined by * &enum v4l2_subdev_io_pin_bits. * @pin: Chip external IO pin to configure * @function: Internal signal pad/function to route to IO pin * @value: Initial value for pin - e.g. GPIO output value * @strength: Pin drive strength */ struct v4l2_subdev_io_pin_config { u32 flags; u8 pin; u8 function; u8 value; u8 strength; }; /** * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs * * @log_status: callback for VIDIOC_LOG_STATUS() ioctl handler code. * * @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 registers 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. * * @command: called by in-kernel drivers in order to call functions internal * to subdev drivers driver that have a separate callback. * * @ioctl: called at the end of ioctl() syscall handler at the V4L2 core. * used to provide support for private ioctls used on the driver. * * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel, * in order to fix data passed from/to userspace. * * @g_register: callback for VIDIOC_DBG_G_REGISTER() ioctl handler code. * * @s_register: callback for VIDIOC_DBG_S_REGISTER() ioctl handler code. * * @s_power: puts subdevice in power saving mode (on == 0) or normal operation * mode (on == 1). DEPRECATED. See * Documentation/driver-api/media/camera-sensor.rst . pre_streamon and * post_streamoff callbacks can be used for e.g. setting the bus to LP-11 * mode before s_stream is called. * * @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**. * * @subscribe_event: used by the drivers to request the control framework that * for it to be warned when the value of a control changes. * * @unsubscribe_event: remove event subscription from the control framework. */ struct v4l2_subdev_core_ops { 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); long (*command)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); #ifdef CONFIG_COMPAT long (*compat_ioctl32)(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg); #endif #ifdef CONFIG_VIDEO_ADV_DEBUG int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); int (*s_register)(struct v4l2_subdev *sd, const 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); }; /** * struct v4l2_subdev_tuner_ops - Callbacks used when v4l device was opened * in radio mode. * * @standby: puts the tuner in standby mode. It will be woken up * automatically the next time it is used. * * @s_radio: callback that switches the tuner to radio mode. * drivers should explicitly call it when a tuner ops should * operate on radio mode, before being able to handle it. * Used on devices that have both AM/FM radio receiver and TV. * * @s_frequency: callback for VIDIOC_S_FREQUENCY() ioctl handler code. * * @g_frequency: callback for VIDIOC_G_FREQUENCY() ioctl handler code. * freq->type must be filled in. Normally done by video_ioctl2() * or the bridge driver. * * @enum_freq_bands: callback for VIDIOC_ENUM_FREQ_BANDS() ioctl handler code. * * @g_tuner: callback for VIDIOC_G_TUNER() ioctl handler code. * * @s_tuner: callback for VIDIOC_S_TUNER() ioctl handler code. @vt->type must be * filled in. Normally done by video_ioctl2 or the * bridge driver. * * @g_modulator: callback for VIDIOC_G_MODULATOR() ioctl handler code. * * @s_modulator: callback for VIDIOC_S_MODULATOR() ioctl handler code. * * @s_type_addr: sets tuner type and its I2C addr. * * @s_config: sets tda9887 specific stuff, like port1, port2 and qss * * .. note:: * * On devices that have both AM/FM and TV, it is up to the driver * to explicitly call s_radio when the tuner should be switched to * radio mode, before handling other &struct v4l2_subdev_tuner_ops * that would require it. An example of such usage is:: * * static void s_frequency(void *priv, const struct v4l2_frequency *f) * { * ... * if (f.type == V4L2_TUNER_RADIO) * v4l2_device_call_all(v4l2_dev, 0, tuner, s_radio); * ... * v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency); * } */ struct v4l2_subdev_tuner_ops { int (*standby)(struct v4l2_subdev *sd); int (*s_radio)(struct v4l2_subdev *sd); int (*s_frequency)(struct v4l2_subdev *sd, const struct v4l2_frequency *freq); int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq); int (*enum_freq_bands)(struct v4l2_subdev *sd, struct v4l2_frequency_band *band); int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt); int (*s_tuner)(struct v4l2_subdev *sd, const struct v4l2_tuner *vt); int (*g_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); int (*s_modulator)(struct v4l2_subdev *sd, const 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); }; /** * struct v4l2_subdev_audio_ops - Callbacks used for audio-related settings * * @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. * * @s_stream: used to notify the audio code that stream will start or has * stopped. */ 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); }; /** * struct v4l2_mbus_frame_desc_entry_csi2 * * @vc: CSI-2 virtual channel * @dt: CSI-2 data type ID */ struct v4l2_mbus_frame_desc_entry_csi2 { u8 vc; u8 dt; }; /** * enum v4l2_mbus_frame_desc_flags - media bus frame description flags * * @V4L2_MBUS_FRAME_DESC_FL_LEN_MAX: * Indicates that &struct v4l2_mbus_frame_desc_entry->length field * specifies maximum data length. * @V4L2_MBUS_FRAME_DESC_FL_BLOB: * Indicates that the format does not have line offsets, i.e. * the receiver should use 1D DMA. */ enum v4l2_mbus_frame_desc_flags { V4L2_MBUS_FRAME_DESC_FL_LEN_MAX = BIT(0), V4L2_MBUS_FRAME_DESC_FL_BLOB = BIT(1), }; /** * struct v4l2_mbus_frame_desc_entry - media bus frame description structure * * @flags: bitmask flags, as defined by &enum v4l2_mbus_frame_desc_flags. * @stream: stream in routing configuration * @pixelcode: media bus pixel code, valid if @flags * %FRAME_DESC_FL_BLOB is not set. * @length: number of octets per frame, valid if @flags * %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX is set. * @bus: Bus-specific frame descriptor parameters * @bus.csi2: CSI-2-specific bus configuration */ struct v4l2_mbus_frame_desc_entry { enum v4l2_mbus_frame_desc_flags flags; u32 stream; u32 pixelcode; u32 length; union { struct v4l2_mbus_frame_desc_entry_csi2 csi2; } bus; }; /* * If this number is too small, it should be dropped altogether and the * API switched to a dynamic number of frame descriptor entries. */ #define V4L2_FRAME_DESC_ENTRY_MAX 8 /** * enum v4l2_mbus_frame_desc_type - media bus frame description type * * @V4L2_MBUS_FRAME_DESC_TYPE_UNDEFINED: * Undefined frame desc type. Drivers should not use this, it is * for backwards compatibility. * @V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL: * Parallel media bus. * @V4L2_MBUS_FRAME_DESC_TYPE_CSI2: * CSI-2 media bus. Frame desc parameters must be set in * &struct v4l2_mbus_frame_desc_entry->csi2. */ enum v4l2_mbus_frame_desc_type { V4L2_MBUS_FRAME_DESC_TYPE_UNDEFINED = 0, V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL, V4L2_MBUS_FRAME_DESC_TYPE_CSI2, }; /** * struct v4l2_mbus_frame_desc - media bus data frame description * @type: type of the bus (enum v4l2_mbus_frame_desc_type) * @entry: frame descriptors array * @num_entries: number of entries in @entry array */ struct v4l2_mbus_frame_desc { enum v4l2_mbus_frame_desc_type type; struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX]; unsigned short num_entries; }; /** * enum v4l2_subdev_pre_streamon_flags - Flags for pre_streamon subdev core op * * @V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP: Set the transmitter to either LP-11 * or LP-111 mode before call to s_stream(). */ enum v4l2_subdev_pre_streamon_flags { V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP = BIT(0), }; /** * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened * in video mode. * * @s_routing: see s_routing in audio_ops, except this version is for video * 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_std: callback for VIDIOC_G_STD() ioctl handler code. * * @s_std: callback for VIDIOC_S_STD() ioctl handler code. * * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by * video input devices. * * @g_std_output: get current standard for video OUTPUT devices. This is ignored * by video input devices. * * @querystd: callback for VIDIOC_QUERYSTD() ioctl handler code. * * @g_tvnorms: get &v4l2_std_id with all standards supported by the video * CAPTURE device. This is ignored by video output devices. * * @g_tvnorms_output: get v4l2_std_id with all standards supported by the video * OUTPUT device. This is ignored by video capture devices. * * @g_input_status: get input status. Same as the status field in the * &struct v4l2_input * * @s_stream: start (enabled == 1) or stop (enabled == 0) streaming on the * sub-device. Failure on stop will remove any resources acquired in * streaming start, while the error code is still returned by the driver. * The caller shall track the subdev state, and shall not start or stop an * already started or stopped subdev. Also see call_s_stream wrapper in * v4l2-subdev.c. * * @g_pixelaspect: callback to return the pixelaspect ratio. * * @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. * * @query_dv_timings: callback for VIDIOC_QUERY_DV_TIMINGS() ioctl handler code. * * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev * can adjust @size to a lower value and must not write more data to the * buffer starting at @data than the original value of @size. * * @pre_streamon: May be called before streaming is actually started, to help * initialising the bus. Current usage is to set a CSI-2 transmitter to * LP-11 or LP-111 mode before streaming. See &enum * v4l2_subdev_pre_streamon_flags. * * pre_streamon shall return error if it cannot perform the operation as * indicated by the flags argument. In particular, -EACCES indicates lack * of support for the operation. The caller shall call post_streamoff for * each successful call of pre_streamon. * * @post_streamoff: Called after streaming is stopped, but if and only if * pre_streamon was called earlier. */ 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 (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm); int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std); int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std); int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std); int (*g_tvnorms)(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 (*g_pixelaspect)(struct v4l2_subdev *sd, struct v4l2_fract *aspect); 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 (*query_dv_timings)(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings); int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf, unsigned int *size); int (*pre_streamon)(struct v4l2_subdev *sd, u32 flags); int (*post_streamoff)(struct v4l2_subdev *sd); }; /** * struct v4l2_subdev_vbi_ops - Callbacks used when v4l device was opened * in video mode via the vbi device node. * * @decode_vbi_line: video decoders that support sliced VBI need to implement * this ioctl. Field p of the &struct v4l2_decode_vbi_line 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 * &struct v4l2_sliced_vbi_data. 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. * &struct 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). * * @g_sliced_vbi_cap: callback for VIDIOC_G_SLICED_VBI_CAP() ioctl handler * code. * * @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); }; /** * enum v4l2_subdev_ir_mode- describes the type of IR supported * * @V4L2_SUBDEV_IR_MODE_PULSE_WIDTH: IR uses struct ir_raw_event records */ enum v4l2_subdev_ir_mode { V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, }; /** * struct v4l2_subdev_ir_parameters - Parameters for IR TX or TX * * @bytes_per_data_element: bytes per data element of data in read or * write call. * @mode: IR mode as defined by &enum v4l2_subdev_ir_mode. * @enable: device is active if true * @interrupt_enable: IR interrupts are enabled if true * @shutdown: if true: set hardware to low/no power, false: normal mode * * @modulation: if true, it uses carrier, if false: baseband * @max_pulse_width: maximum pulse width in ns, valid only for baseband signal * @carrier_freq: carrier frequency in Hz, valid only for modulated signal * @duty_cycle: duty cycle percentage, valid only for modulated signal * @invert_level: invert signal level * * @invert_carrier_sense: Send 0/space as a carrier burst. used only in TX. * * @noise_filter_min_width: min time of a valid pulse, in ns. Used only for RX. * @carrier_range_lower: Lower carrier range, in Hz, valid only for modulated * signal. Used only for RX. * @carrier_range_upper: Upper carrier range, in Hz, valid only for modulated * signal. Used only for RX. * @resolution: The receive resolution, in ns . Used only for RX. */ struct v4l2_subdev_ir_parameters { unsigned int bytes_per_data_element; enum v4l2_subdev_ir_mode mode; bool enable; bool interrupt_enable; bool shutdown; bool modulation; u32 max_pulse_width; unsigned int carrier_freq; unsigned int duty_cycle; bool invert_level; /* Tx only */ bool invert_carrier_sense; /* Rx only */ u32 noise_filter_min_width; unsigned int carrier_range_lower; unsigned int carrier_range_upper; u32 resolution; }; /** * struct v4l2_subdev_ir_ops - operations for IR subdevices * * @rx_read: Reads received codes or pulse width data. * The semantics are similar to a non-blocking read() call. * @rx_g_parameters: Get the current operating parameters and state of * the IR receiver. * @rx_s_parameters: Set the current operating parameters and state of * the IR receiver. 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. * * @tx_write: Writes codes or pulse width data for transmission. * The semantics are similar to a non-blocking write() call. * @tx_g_parameters: Get the current operating parameters and state of * the IR transmitter. * @tx_s_parameters: Set the current operating parameters and state of * the IR 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. */ 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_config - Used for storing subdev pad information. * * @format: &struct v4l2_mbus_framefmt * @crop: &struct v4l2_rect to be used for crop * @compose: &struct v4l2_rect to be used for compose * @interval: frame interval */ struct v4l2_subdev_pad_config { struct v4l2_mbus_framefmt format; struct v4l2_rect crop; struct v4l2_rect compose; struct v4l2_fract interval; }; /** * struct v4l2_subdev_stream_config - Used for storing stream configuration. * * @pad: pad number * @stream: stream number * @enabled: has the stream been enabled with v4l2_subdev_enable_stream() * @fmt: &struct v4l2_mbus_framefmt * @crop: &struct v4l2_rect to be used for crop * @compose: &struct v4l2_rect to be used for compose * @interval: frame interval * * This structure stores configuration for a stream. */ struct v4l2_subdev_stream_config { u32 pad; u32 stream; bool enabled; struct v4l2_mbus_framefmt fmt; struct v4l2_rect crop; struct v4l2_rect compose; struct v4l2_fract interval; }; /** * struct v4l2_subdev_stream_configs - A collection of stream configs. * * @num_configs: number of entries in @config. * @configs: an array of &struct v4l2_subdev_stream_configs. */ struct v4l2_subdev_stream_configs { u32 num_configs; struct v4l2_subdev_stream_config *configs; }; /** * struct v4l2_subdev_krouting - subdev routing table * * @num_routes: number of routes * @routes: &struct v4l2_subdev_route * * This structure contains the routing table for a subdev. */ struct v4l2_subdev_krouting { unsigned int num_routes; struct v4l2_subdev_route *routes; }; /** * struct v4l2_subdev_state - Used for storing subdev state information. * * @_lock: default for 'lock' * @lock: mutex for the state. May be replaced by the user. * @sd: the sub-device which the state is related to * @pads: &struct v4l2_subdev_pad_config array * @routing: routing table for the subdev * @stream_configs: stream configurations (only for V4L2_SUBDEV_FL_STREAMS) * * This structure only needs to be passed to the pad op if the 'which' field * of the main argument is set to %V4L2_SUBDEV_FORMAT_TRY. For * %V4L2_SUBDEV_FORMAT_ACTIVE it is safe to pass %NULL. */ struct v4l2_subdev_state { /* lock for the struct v4l2_subdev_state fields */ struct mutex _lock; struct mutex *lock; struct v4l2_subdev *sd; struct v4l2_subdev_pad_config *pads; struct v4l2_subdev_krouting routing; struct v4l2_subdev_stream_configs stream_configs; }; /** * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations * * @enum_mbus_code: callback for VIDIOC_SUBDEV_ENUM_MBUS_CODE() ioctl handler * code. * @enum_frame_size: callback for VIDIOC_SUBDEV_ENUM_FRAME_SIZE() ioctl handler * code. * * @enum_frame_interval: callback for VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL() ioctl * handler code. * * @get_fmt: callback for VIDIOC_SUBDEV_G_FMT() ioctl handler code. * * @set_fmt: callback for VIDIOC_SUBDEV_S_FMT() ioctl handler code. * * @get_selection: callback for VIDIOC_SUBDEV_G_SELECTION() ioctl handler code. * * @set_selection: callback for VIDIOC_SUBDEV_S_SELECTION() ioctl handler code. * * @get_frame_interval: callback for VIDIOC_SUBDEV_G_FRAME_INTERVAL() * ioctl handler code. * * @set_frame_interval: callback for VIDIOC_SUBDEV_S_FRAME_INTERVAL() * ioctl handler code. * * @get_edid: callback for VIDIOC_SUBDEV_G_EDID() ioctl handler code. * * @set_edid: callback for VIDIOC_SUBDEV_S_EDID() ioctl handler code. * * @dv_timings_cap: callback for VIDIOC_SUBDEV_DV_TIMINGS_CAP() ioctl handler * code. * * @enum_dv_timings: callback for VIDIOC_SUBDEV_ENUM_DV_TIMINGS() ioctl handler * code. * * @link_validate: used by the media controller code to check if the links * that belongs to a pipeline can be used for stream. * * @get_frame_desc: get the current low level media bus frame parameters. * * @set_frame_desc: set the low level media bus frame parameters, @fd array * may be adjusted by the subdev driver to device capabilities. * * @get_mbus_config: get the media bus configuration of a remote sub-device. * The media bus configuration is usually retrieved from the * firmware interface at sub-device probe time, immediately * applied to the hardware and eventually adjusted by the * driver. Remote sub-devices (usually video receivers) shall * use this operation to query the transmitting end bus * configuration in order to adjust their own one accordingly. * Callers should make sure they get the most up-to-date as * possible configuration from the remote end, likely calling * this operation as close as possible to stream on time. The * operation shall fail if the pad index it has been called on * is not valid or in case of unrecoverable failures. * * @set_routing: Enable or disable data connection routes described in the * subdevice routing table. Subdevs that implement this operation * must set the V4L2_SUBDEV_FL_STREAMS flag. * * @enable_streams: Enable the streams defined in streams_mask on the given * source pad. Subdevs that implement this operation must use the active * state management provided by the subdev core (enabled through a call to * v4l2_subdev_init_finalize() at initialization time). Do not call * directly, use v4l2_subdev_enable_streams() instead. * * @disable_streams: Disable the streams defined in streams_mask on the given * source pad. Subdevs that implement this operation must use the active * state management provided by the subdev core (enabled through a call to * v4l2_subdev_init_finalize() at initialization time). Do not call * directly, use v4l2_subdev_disable_streams() instead. */ struct v4l2_subdev_pad_ops { int (*enum_mbus_code)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_mbus_code_enum *code); int (*enum_frame_size)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse); int (*enum_frame_interval)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval_enum *fie); int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format); int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format); int (*get_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel); int (*set_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel); int (*get_frame_interval)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *interval); int (*set_frame_interval)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *interval); int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid); int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_edid *edid); int (*dv_timings_cap)(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap); int (*enum_dv_timings)(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *timings); #ifdef CONFIG_MEDIA_CONTROLLER int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link, struct v4l2_subdev_format *source_fmt, struct v4l2_subdev_format *sink_fmt); #endif /* CONFIG_MEDIA_CONTROLLER */ int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd); int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd); int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config); int (*set_routing)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, enum v4l2_subdev_format_whence which, struct v4l2_subdev_krouting *route); int (*enable_streams)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask); int (*disable_streams)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask); }; /** * struct v4l2_subdev_ops - Subdev operations * * @core: pointer to &struct v4l2_subdev_core_ops. Can be %NULL * @tuner: pointer to &struct v4l2_subdev_tuner_ops. Can be %NULL * @audio: pointer to &struct v4l2_subdev_audio_ops. Can be %NULL * @video: pointer to &struct v4l2_subdev_video_ops. Can be %NULL * @vbi: pointer to &struct v4l2_subdev_vbi_ops. Can be %NULL * @ir: pointer to &struct v4l2_subdev_ir_ops. Can be %NULL * @sensor: pointer to &struct v4l2_subdev_sensor_ops. Can be %NULL * @pad: pointer to &struct v4l2_subdev_pad_ops. Can be %NULL */ 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; }; /** * struct v4l2_subdev_internal_ops - V4L2 subdev internal ops * * @init_state: initialize the subdev state to default values * * @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. Please note that * it is possible for @close to be called after @unregistered! * * @release: called when the last user of the subdev device is gone. This * happens after the @unregistered callback and when the last open * filehandle to the v4l-subdevX device node was closed. If no device * node was created for this sub-device, then the @release callback * is called right after the @unregistered callback. * The @release callback is typically used to free the memory containing * the v4l2_subdev structure. It is almost certainly required for any * sub-device that sets the V4L2_SUBDEV_FL_HAS_DEVNODE flag. * * .. note:: * Never call this from drivers, only the v4l2 framework can call * these ops. */ struct v4l2_subdev_internal_ops { int (*init_state)(struct v4l2_subdev *sd, struct v4l2_subdev_state *state); 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); void (*release)(struct v4l2_subdev *sd); }; /* 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. * Note controls can send events, thus drivers exposing controls * should set this flag. */ #define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) /* * Set this flag if this subdev supports multiplexed streams. This means * that the driver supports routing and handles the stream parameter in its * v4l2_subdev_pad_ops handlers. More specifically, this means: * * - Centrally managed subdev active state is enabled * - Legacy pad config is _not_ supported (state->pads is NULL) * - Routing ioctls are available * - Multiple streams per pad are supported */ #define V4L2_SUBDEV_FL_STREAMS (1U << 4) struct regulator_bulk_data; /** * struct v4l2_subdev_platform_data - regulators config struct * * @regulators: Optional regulators used to power on/off the subdevice * @num_regulators: Number of regululators * @host_priv: Per-subdevice data, specific for a certain video host device */ struct v4l2_subdev_platform_data { struct regulator_bulk_data *regulators; int num_regulators; void *host_priv; }; /** * struct v4l2_subdev - describes a V4L2 sub-device * * @entity: pointer to &struct media_entity * @list: List of sub-devices * @owner: The owner is the same as the driver's &struct device owner. * @owner_v4l2_dev: true if the &sd->owner matches the owner of @v4l2_dev->dev * owner. Initialized by v4l2_device_register_subdev(). * @flags: subdev flags. Can be: * %V4L2_SUBDEV_FL_IS_I2C - Set this flag if this subdev is a i2c device; * %V4L2_SUBDEV_FL_IS_SPI - Set this flag if this subdev is a spi device; * %V4L2_SUBDEV_FL_HAS_DEVNODE - Set this flag if this subdev needs a * device node; * %V4L2_SUBDEV_FL_HAS_EVENTS - Set this flag if this subdev generates * events. * * @v4l2_dev: pointer to struct &v4l2_device * @ops: pointer to struct &v4l2_subdev_ops * @internal_ops: pointer to struct &v4l2_subdev_internal_ops. * Never call these internal ops from within a driver! * @ctrl_handler: The control handler of this subdev. May be NULL. * @name: Name of the sub-device. Please notice that the name must be unique. * @grp_id: can be used to group similar subdevs. Value is driver-specific * @dev_priv: pointer to private data * @host_priv: pointer to private data used by the device where the subdev * is attached. * @devnode: subdev device node * @dev: pointer to the physical device, if any * @fwnode: The fwnode_handle of the subdev, usually the same as * either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL). * @async_list: Links this subdev to a global subdev_list or * @notifier->done_list list. * @async_subdev_endpoint_list: List entry in async_subdev_endpoint_entry of * &struct v4l2_async_subdev_endpoint. * @subdev_notifier: A sub-device notifier implicitly registered for the sub- * device using v4l2_async_register_subdev_sensor(). * @asc_list: Async connection list, of &struct * v4l2_async_connection.subdev_entry. * @pdata: common part of subdevice platform data * @state_lock: A pointer to a lock used for all the subdev's states, set by the * driver. This is optional. If NULL, each state instance will get * a lock of its own. * @privacy_led: Optional pointer to a LED classdev for the privacy LED for sensors. * @active_state: Active state for the subdev (NULL for subdevs tracking the * state internally). Initialized by calling * v4l2_subdev_init_finalize(). * @enabled_streams: Bitmask of enabled streams used by * v4l2_subdev_enable_streams() and * v4l2_subdev_disable_streams() helper functions for fallback * cases. * * Each instance of a subdev driver should create this struct, either * stand-alone or embedded in a larger struct. * * This structure should be initialized by v4l2_subdev_init() or one of * its variants: v4l2_spi_subdev_init(), v4l2_i2c_subdev_init(). */ struct v4l2_subdev { #if defined(CONFIG_MEDIA_CONTROLLER) struct media_entity entity; #endif struct list_head list; struct module *owner; bool owner_v4l2_dev; u32 flags; struct v4l2_device *v4l2_dev; const struct v4l2_subdev_ops *ops; const struct v4l2_subdev_internal_ops *internal_ops; struct v4l2_ctrl_handler *ctrl_handler; char name[52]; u32 grp_id; void *dev_priv; void *host_priv; struct video_device *devnode; struct device *dev; struct fwnode_handle *fwnode; struct list_head async_list; struct list_head async_subdev_endpoint_list; struct v4l2_async_notifier *subdev_notifier; struct list_head asc_list; struct v4l2_subdev_platform_data *pdata; struct mutex *state_lock; /* * The fields below are private, and should only be accessed via * appropriate functions. */ struct led_classdev *privacy_led; /* * TODO: active_state should most likely be changed from a pointer to an * embedded field. For the time being it's kept as a pointer to more * easily catch uses of active_state in the cases where the driver * doesn't support it. */ struct v4l2_subdev_state *active_state; u64 enabled_streams; }; /** * media_entity_to_v4l2_subdev - Returns a &struct v4l2_subdev from * the &struct media_entity embedded in it. * * @ent: pointer to &struct media_entity. */ #define media_entity_to_v4l2_subdev(ent) \ ({ \ typeof(ent) __me_sd_ent = (ent); \ \ __me_sd_ent ? \ container_of(__me_sd_ent, struct v4l2_subdev, entity) : \ NULL; \ }) /** * vdev_to_v4l2_subdev - Returns a &struct v4l2_subdev from * the &struct video_device embedded on it. * * @vdev: pointer to &struct video_device */ #define vdev_to_v4l2_subdev(vdev) \ ((struct v4l2_subdev *)video_get_drvdata(vdev)) /** * struct v4l2_subdev_fh - Used for storing subdev information per file handle * * @vfh: pointer to &struct v4l2_fh * @state: pointer to &struct v4l2_subdev_state * @owner: module pointer to the owner of this file handle * @client_caps: bitmask of ``V4L2_SUBDEV_CLIENT_CAP_*`` */ struct v4l2_subdev_fh { struct v4l2_fh vfh; struct module *owner; #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) struct v4l2_subdev_state *state; u64 client_caps; #endif }; /** * to_v4l2_subdev_fh - Returns a &struct v4l2_subdev_fh from * the &struct v4l2_fh embedded on it. * * @fh: pointer to &struct v4l2_fh */ #define to_v4l2_subdev_fh(fh) \ container_of(fh, struct v4l2_subdev_fh, vfh) extern const struct v4l2_file_operations v4l2_subdev_fops; /** * v4l2_set_subdevdata - Sets V4L2 dev private device data * * @sd: pointer to &struct v4l2_subdev * @p: pointer to the private device data to be stored. */ static inline void v4l2_set_subdevdata(struct v4l2_subdev *sd, void *p) { sd->dev_priv = p; } /** * v4l2_get_subdevdata - Gets V4L2 dev private device data * * @sd: pointer to &struct v4l2_subdev * * Returns the pointer to the private device data to be stored. */ static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) { return sd->dev_priv; } /** * v4l2_set_subdev_hostdata - Sets V4L2 dev private host data * * @sd: pointer to &struct v4l2_subdev * @p: pointer to the private data to be stored. */ static inline void v4l2_set_subdev_hostdata(struct v4l2_subdev *sd, void *p) { sd->host_priv = p; } /** * v4l2_get_subdev_hostdata - Gets V4L2 dev private data * * @sd: pointer to &struct v4l2_subdev * * Returns the pointer to the private host data to be stored. */ static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd) { return sd->host_priv; } #ifdef CONFIG_MEDIA_CONTROLLER /** * v4l2_subdev_get_fwnode_pad_1_to_1 - Get pad number from a subdev fwnode * endpoint, assuming 1:1 port:pad * * @entity: Pointer to the subdev entity * @endpoint: Pointer to a parsed fwnode endpoint * * This function can be used as the .get_fwnode_pad operation for * subdevices that map port numbers and pad indexes 1:1. If the endpoint * is owned by the subdevice, the function returns the endpoint port * number. * * Returns the endpoint port number on success or a negative error code. */ int v4l2_subdev_get_fwnode_pad_1_to_1(struct media_entity *entity, struct fwnode_endpoint *endpoint); /** * v4l2_subdev_link_validate_default - validates a media link * * @sd: pointer to &struct v4l2_subdev * @link: pointer to &struct media_link * @source_fmt: pointer to &struct v4l2_subdev_format * @sink_fmt: pointer to &struct v4l2_subdev_format * * This function ensures that width, height and the media bus pixel * code are equal on both source and sink of the link. */ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, struct media_link *link, struct v4l2_subdev_format *source_fmt, struct v4l2_subdev_format *sink_fmt); /** * v4l2_subdev_link_validate - validates a media link * * @link: pointer to &struct media_link * * This function calls the subdev's link_validate ops to validate * if a media link is valid for streaming. It also internally * calls v4l2_subdev_link_validate_default() to ensure that * width, height and the media bus pixel code are equal on both * source and sink of the link. */ int v4l2_subdev_link_validate(struct media_link *link); /** * v4l2_subdev_has_pad_interdep - MC has_pad_interdep implementation for subdevs * * @entity: pointer to &struct media_entity * @pad0: pad number for the first pad * @pad1: pad number for the second pad * * This function is an implementation of the * media_entity_operations.has_pad_interdep operation for subdevs that * implement the multiplexed streams API (as indicated by the * V4L2_SUBDEV_FL_STREAMS subdev flag). * * It considers two pads interdependent if there is an active route between pad0 * and pad1. */ bool v4l2_subdev_has_pad_interdep(struct media_entity *entity, unsigned int pad0, unsigned int pad1); /** * __v4l2_subdev_state_alloc - allocate v4l2_subdev_state * * @sd: pointer to &struct v4l2_subdev for which the state is being allocated. * @lock_name: name of the state lock * @key: lock_class_key for the lock * * Must call __v4l2_subdev_state_free() when state is no longer needed. * * Not to be called directly by the drivers. */ struct v4l2_subdev_state *__v4l2_subdev_state_alloc(struct v4l2_subdev *sd, const char *lock_name, struct lock_class_key *key); /** * __v4l2_subdev_state_free - free a v4l2_subdev_state * * @state: v4l2_subdev_state to be freed. * * Not to be called directly by the drivers. */ void __v4l2_subdev_state_free(struct v4l2_subdev_state *state); /** * v4l2_subdev_init_finalize() - Finalizes the initialization of the subdevice * @sd: The subdev * * This function finalizes the initialization of the subdev, including * allocation of the active state for the subdev. * * This function must be called by the subdev drivers that use the centralized * active state, after the subdev struct has been initialized and * media_entity_pads_init() has been called, but before registering the * subdev. * * The user must call v4l2_subdev_cleanup() when the subdev is being removed. */ #define v4l2_subdev_init_finalize(sd) \ ({ \ static struct lock_class_key __key; \ const char *name = KBUILD_BASENAME \ ":" __stringify(__LINE__) ":sd->active_state->lock"; \ __v4l2_subdev_init_finalize(sd, name, &__key); \ }) int __v4l2_subdev_init_finalize(struct v4l2_subdev *sd, const char *name, struct lock_class_key *key); /** * v4l2_subdev_cleanup() - Releases the resources allocated by the subdevice * @sd: The subdevice * * Clean up a V4L2 async sub-device. Must be called for a sub-device as part of * its release if resources have been associated with it using * v4l2_async_subdev_endpoint_add() or v4l2_subdev_init_finalize(). */ void v4l2_subdev_cleanup(struct v4l2_subdev *sd); /* * A macro to generate the macro or function name for sub-devices state access * wrapper macros below. */ #define __v4l2_subdev_state_gen_call(NAME, _1, ARG, ...) \ __v4l2_subdev_state_get_ ## NAME ## ARG /** * v4l2_subdev_state_get_format() - Get pointer to a stream format * @state: subdevice state * @pad: pad id * @...: stream id (optional argument) * * This returns a pointer to &struct v4l2_mbus_framefmt for the given pad + * stream in the subdev state. * * For stream-unaware drivers the format for the corresponding pad is returned. * If the pad does not exist, NULL is returned. */ /* * Wrap v4l2_subdev_state_get_format(), allowing the function to be called with * two or three arguments. The purpose of the __v4l2_subdev_state_get_format() * macro below is to come up with the name of the function or macro to call, * using the last two arguments (_stream and _pad). The selected function or * macro is then called using the arguments specified by the caller. A similar * arrangement is used for v4l2_subdev_state_crop() and * v4l2_subdev_state_compose() below. */ #define v4l2_subdev_state_get_format(state, pad, ...) \ __v4l2_subdev_state_gen_call(format, ##__VA_ARGS__, , _pad) \ (state, pad, ##__VA_ARGS__) #define __v4l2_subdev_state_get_format_pad(state, pad) \ __v4l2_subdev_state_get_format(state, pad, 0) struct v4l2_mbus_framefmt * __v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, unsigned int pad, u32 stream); /** * v4l2_subdev_state_get_crop() - Get pointer to a stream crop rectangle * @state: subdevice state * @pad: pad id * @...: stream id (optional argument) * * This returns a pointer to crop rectangle for the given pad + stream in the * subdev state. * * For stream-unaware drivers the crop rectangle for the corresponding pad is * returned. If the pad does not exist, NULL is returned. */ #define v4l2_subdev_state_get_crop(state, pad, ...) \ __v4l2_subdev_state_gen_call(crop, ##__VA_ARGS__, , _pad) \ (state, pad, ##__VA_ARGS__) #define __v4l2_subdev_state_get_crop_pad(state, pad) \ __v4l2_subdev_state_get_crop(state, pad, 0) struct v4l2_rect * __v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, u32 stream); /** * v4l2_subdev_state_get_compose() - Get pointer to a stream compose rectangle * @state: subdevice state * @pad: pad id * @...: stream id (optional argument) * * This returns a pointer to compose rectangle for the given pad + stream in the * subdev state. * * For stream-unaware drivers the compose rectangle for the corresponding pad is * returned. If the pad does not exist, NULL is returned. */ #define v4l2_subdev_state_get_compose(state, pad, ...) \ __v4l2_subdev_state_gen_call(compose, ##__VA_ARGS__, , _pad) \ (state, pad, ##__VA_ARGS__) #define __v4l2_subdev_state_get_compose_pad(state, pad) \ __v4l2_subdev_state_get_compose(state, pad, 0) struct v4l2_rect * __v4l2_subdev_state_get_compose(struct v4l2_subdev_state *state, unsigned int pad, u32 stream); /** * v4l2_subdev_state_get_interval() - Get pointer to a stream frame interval * @state: subdevice state * @pad: pad id * @...: stream id (optional argument) * * This returns a pointer to the frame interval for the given pad + stream in * the subdev state. * * For stream-unaware drivers the frame interval for the corresponding pad is * returned. If the pad does not exist, NULL is returned. */ #define v4l2_subdev_state_get_interval(state, pad, ...) \ __v4l2_subdev_state_gen_call(interval, ##__VA_ARGS__, , _pad) \ (state, pad, ##__VA_ARGS__) #define __v4l2_subdev_state_get_interval_pad(state, pad) \ __v4l2_subdev_state_get_interval(state, pad, 0) struct v4l2_fract * __v4l2_subdev_state_get_interval(struct v4l2_subdev_state *state, unsigned int pad, u32 stream); #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) /** * v4l2_subdev_get_fmt() - Fill format based on state * @sd: subdevice * @state: subdevice state * @format: pointer to &struct v4l2_subdev_format * * Fill @format->format field based on the information in the @format struct. * * This function can be used by the subdev drivers which support active state to * implement v4l2_subdev_pad_ops.get_fmt if the subdev driver does not need to * do anything special in their get_fmt op. * * Returns 0 on success, error value otherwise. */ int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format); /** * v4l2_subdev_get_frame_interval() - Fill frame interval based on state * @sd: subdevice * @state: subdevice state * @fi: pointer to &struct v4l2_subdev_frame_interval * * Fill @fi->interval field based on the information in the @fi struct. * * This function can be used by the subdev drivers which support active state to * implement v4l2_subdev_pad_ops.get_frame_interval if the subdev driver does * not need to do anything special in their get_frame_interval op. * * Returns 0 on success, error value otherwise. */ int v4l2_subdev_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi); /** * v4l2_subdev_set_routing() - Set given routing to subdev state * @sd: The subdevice * @state: The subdevice state * @routing: Routing that will be copied to subdev state * * This will release old routing table (if any) from the state, allocate * enough space for the given routing, and copy the routing. * * This can be used from the subdev driver's set_routing op, after validating * the routing. */ int v4l2_subdev_set_routing(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing); struct v4l2_subdev_route * __v4l2_subdev_next_active_route(const struct v4l2_subdev_krouting *routing, struct v4l2_subdev_route *route); /** * for_each_active_route - iterate on all active routes of a routing table * @routing: The routing table * @route: The route iterator */ #define for_each_active_route(routing, route) \ for ((route) = NULL; \ ((route) = __v4l2_subdev_next_active_route((routing), (route)));) /** * v4l2_subdev_set_routing_with_fmt() - Set given routing and format to subdev * state * @sd: The subdevice * @state: The subdevice state * @routing: Routing that will be copied to subdev state * @fmt: Format used to initialize all the streams * * This is the same as v4l2_subdev_set_routing, but additionally initializes * all the streams using the given format. */ int v4l2_subdev_set_routing_with_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing, const struct v4l2_mbus_framefmt *fmt); /** * v4l2_subdev_routing_find_opposite_end() - Find the opposite stream * @routing: routing used to find the opposite side * @pad: pad id * @stream: stream id * @other_pad: pointer used to return the opposite pad * @other_stream: pointer used to return the opposite stream * * This function uses the routing table to find the pad + stream which is * opposite the given pad + stream. * * @other_pad and/or @other_stream can be NULL if the caller does not need the * value. * * Returns 0 on success, or -EINVAL if no matching route is found. */ int v4l2_subdev_routing_find_opposite_end(const struct v4l2_subdev_krouting *routing, u32 pad, u32 stream, u32 *other_pad, u32 *other_stream); /** * v4l2_subdev_state_get_opposite_stream_format() - Get pointer to opposite * stream format * @state: subdevice state * @pad: pad id * @stream: stream id * * This returns a pointer to &struct v4l2_mbus_framefmt for the pad + stream * that is opposite the given pad + stream in the subdev state. * * If the state does not contain the given pad + stream, NULL is returned. */ struct v4l2_mbus_framefmt * v4l2_subdev_state_get_opposite_stream_format(struct v4l2_subdev_state *state, u32 pad, u32 stream); /** * v4l2_subdev_state_xlate_streams() - Translate streams from one pad to another * * @state: Subdevice state * @pad0: The first pad * @pad1: The second pad * @streams: Streams bitmask on the first pad * * Streams on sink pads of a subdev are routed to source pads as expressed in * the subdev state routing table. Stream numbers don't necessarily match on * the sink and source side of a route. This function translates stream numbers * on @pad0, expressed as a bitmask in @streams, to the corresponding streams * on @pad1 using the routing table from the @state. It returns the stream mask * on @pad1, and updates @streams with the streams that have been found in the * routing table. * * @pad0 and @pad1 must be a sink and a source, in any order. * * Return: The bitmask of streams of @pad1 that are routed to @streams on @pad0. */ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state, u32 pad0, u32 pad1, u64 *streams); /** * enum v4l2_subdev_routing_restriction - Subdevice internal routing restrictions * * @V4L2_SUBDEV_ROUTING_NO_1_TO_N: * an input stream shall not be routed to multiple output streams (stream * duplication) * @V4L2_SUBDEV_ROUTING_NO_N_TO_1: * multiple input streams shall not be routed to the same output stream * (stream merging) * @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX: * all streams from a sink pad must be routed to a single source pad * @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX: * all streams on a source pad must originate from a single sink pad * @V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING: * source pads shall not contain multiplexed streams * @V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING: * sink pads shall not contain multiplexed streams * @V4L2_SUBDEV_ROUTING_ONLY_1_TO_1: * only non-overlapping 1-to-1 stream routing is allowed (a combination of * @V4L2_SUBDEV_ROUTING_NO_1_TO_N and @V4L2_SUBDEV_ROUTING_NO_N_TO_1) * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX: * all streams from a sink pad must be routed to a single source pad, and * that source pad shall not get routes from any other sink pad * (a combination of @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX and * @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX) * @V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING: * no multiplexed streams allowed on either source or sink sides. */ enum v4l2_subdev_routing_restriction { V4L2_SUBDEV_ROUTING_NO_1_TO_N = BIT(0), V4L2_SUBDEV_ROUTING_NO_N_TO_1 = BIT(1), V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX = BIT(2), V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX = BIT(3), V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING = BIT(4), V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING = BIT(5), V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 = V4L2_SUBDEV_ROUTING_NO_1_TO_N | V4L2_SUBDEV_ROUTING_NO_N_TO_1, V4L2_SUBDEV_ROUTING_NO_STREAM_MIX = V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX | V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX, V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING = V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING | V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING, }; /** * v4l2_subdev_routing_validate() - Verify that routes comply with driver * constraints * @sd: The subdevice * @routing: Routing to verify * @disallow: Restrictions on routes * * This verifies that the given routing complies with the @disallow constraints. * * Returns 0 on success, error value otherwise. */ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, const struct v4l2_subdev_krouting *routing, enum v4l2_subdev_routing_restriction disallow); /** * v4l2_subdev_enable_streams() - Enable streams on a pad * @sd: The subdevice * @pad: The pad * @streams_mask: Bitmask of streams to enable * * This function enables streams on a source @pad of a subdevice. The pad is * identified by its index, while the streams are identified by the * @streams_mask bitmask. This allows enabling multiple streams on a pad at * once. * * Enabling a stream that is already enabled isn't allowed. If @streams_mask * contains an already enabled stream, this function returns -EALREADY without * performing any operation. * * Per-stream enable is only available for subdevs that implement the * .enable_streams() and .disable_streams() operations. For other subdevs, this * function implements a best-effort compatibility by calling the .s_stream() * operation, limited to subdevs that have a single source pad. * * Return: * * 0: Success * * -EALREADY: One of the streams in streams_mask is already enabled * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad * * -EOPNOTSUPP: Falling back to the legacy .s_stream() operation is * impossible because the subdev has multiple source pads */ int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask); /** * v4l2_subdev_disable_streams() - Disable streams on a pad * @sd: The subdevice * @pad: The pad * @streams_mask: Bitmask of streams to disable * * This function disables streams on a source @pad of a subdevice. The pad is * identified by its index, while the streams are identified by the * @streams_mask bitmask. This allows disabling multiple streams on a pad at * once. * * Disabling a streams that is not enabled isn't allowed. If @streams_mask * contains a disabled stream, this function returns -EALREADY without * performing any operation. * * Per-stream disable is only available for subdevs that implement the * .enable_streams() and .disable_streams() operations. For other subdevs, this * function implements a best-effort compatibility by calling the .s_stream() * operation, limited to subdevs that have a single source pad. * * Return: * * 0: Success * * -EALREADY: One of the streams in streams_mask is not enabled * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad * * -EOPNOTSUPP: Falling back to the legacy .s_stream() operation is * impossible because the subdev has multiple source pads */ int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask); /** * v4l2_subdev_s_stream_helper() - Helper to implement the subdev s_stream * operation using enable_streams and disable_streams * @sd: The subdevice * @enable: Enable or disable streaming * * Subdevice drivers that implement the streams-aware * &v4l2_subdev_pad_ops.enable_streams and &v4l2_subdev_pad_ops.disable_streams * operations can use this helper to implement the legacy * &v4l2_subdev_video_ops.s_stream operation. * * This helper can only be used by subdevs that have a single source pad. * * Return: 0 on success, or a negative error code otherwise. */ int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd, int enable); #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ #endif /* CONFIG_MEDIA_CONTROLLER */ /** * v4l2_subdev_lock_state() - Locks the subdev state * @state: The subdevice state * * Locks the given subdev state. * * The state must be unlocked with v4l2_subdev_unlock_state() after use. */ static inline void v4l2_subdev_lock_state(struct v4l2_subdev_state *state) { mutex_lock(state->lock); } /** * v4l2_subdev_unlock_state() - Unlocks the subdev state * @state: The subdevice state * * Unlocks the given subdev state. */ static inline void v4l2_subdev_unlock_state(struct v4l2_subdev_state *state) { mutex_unlock(state->lock); } /** * v4l2_subdev_get_unlocked_active_state() - Checks that the active subdev state * is unlocked and returns it * @sd: The subdevice * * Returns the active state for the subdevice, or NULL if the subdev does not * support active state. If the state is not NULL, calls * lockdep_assert_not_held() to issue a warning if the state is locked. * * This function is to be used e.g. when getting the active state for the sole * purpose of passing it forward, without accessing the state fields. */ static inline struct v4l2_subdev_state * v4l2_subdev_get_unlocked_active_state(struct v4l2_subdev *sd) { if (sd->active_state) lockdep_assert_not_held(sd->active_state->lock); return sd->active_state; } /** * v4l2_subdev_get_locked_active_state() - Checks that the active subdev state * is locked and returns it * * @sd: The subdevice * * Returns the active state for the subdevice, or NULL if the subdev does not * support active state. If the state is not NULL, calls lockdep_assert_held() * to issue a warning if the state is not locked. * * This function is to be used when the caller knows that the active state is * already locked. */ static inline struct v4l2_subdev_state * v4l2_subdev_get_locked_active_state(struct v4l2_subdev *sd) { if (sd->active_state) lockdep_assert_held(sd->active_state->lock); return sd->active_state; } /** * v4l2_subdev_lock_and_get_active_state() - Locks and returns the active subdev * state for the subdevice * @sd: The subdevice * * Returns the locked active state for the subdevice, or NULL if the subdev * does not support active state. * * The state must be unlocked with v4l2_subdev_unlock_state() after use. */ static inline struct v4l2_subdev_state * v4l2_subdev_lock_and_get_active_state(struct v4l2_subdev *sd) { if (sd->active_state) v4l2_subdev_lock_state(sd->active_state); return sd->active_state; } /** * v4l2_subdev_init - initializes the sub-device struct * * @sd: pointer to the &struct v4l2_subdev to be initialized * @ops: pointer to &struct v4l2_subdev_ops. */ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops); extern const struct v4l2_subdev_ops v4l2_subdev_call_wrappers; /** * v4l2_subdev_call - call an operation of a v4l2_subdev. * * @sd: pointer to the &struct v4l2_subdev * @o: name of the element at &struct v4l2_subdev_ops that contains @f. * Each element there groups a set of callbacks functions. * @f: callback function to be called. * The callback functions are defined in groups, according to * each element at &struct v4l2_subdev_ops. * @args: arguments for @f. * * Example: err = v4l2_subdev_call(sd, video, s_std, norm); */ #define v4l2_subdev_call(sd, o, f, args...) \ ({ \ struct v4l2_subdev *__sd = (sd); \ int __result; \ if (!__sd) \ __result = -ENODEV; \ else if (!(__sd->ops->o && __sd->ops->o->f)) \ __result = -ENOIOCTLCMD; \ else if (v4l2_subdev_call_wrappers.o && \ v4l2_subdev_call_wrappers.o->f) \ __result = v4l2_subdev_call_wrappers.o->f( \ __sd, ##args); \ else \ __result = __sd->ops->o->f(__sd, ##args); \ __result; \ }) /** * v4l2_subdev_call_state_active - call an operation of a v4l2_subdev which * takes state as a parameter, passing the * subdev its active state. * * @sd: pointer to the &struct v4l2_subdev * @o: name of the element at &struct v4l2_subdev_ops that contains @f. * Each element there groups a set of callbacks functions. * @f: callback function to be called. * The callback functions are defined in groups, according to * each element at &struct v4l2_subdev_ops. * @args: arguments for @f. * * This is similar to v4l2_subdev_call(), except that this version can only be * used for ops that take a subdev state as a parameter. The macro will get the * active state, lock it before calling the op and unlock it after the call. */ #define v4l2_subdev_call_state_active(sd, o, f, args...) \ ({ \ int __result; \ struct v4l2_subdev_state *state; \ state = v4l2_subdev_get_unlocked_active_state(sd); \ if (state) \ v4l2_subdev_lock_state(state); \ __result = v4l2_subdev_call(sd, o, f, state, ##args); \ if (state) \ v4l2_subdev_unlock_state(state); \ __result; \ }) /** * v4l2_subdev_call_state_try - call an operation of a v4l2_subdev which * takes state as a parameter, passing the * subdev a newly allocated try state. * * @sd: pointer to the &struct v4l2_subdev * @o: name of the element at &struct v4l2_subdev_ops that contains @f. * Each element there groups a set of callbacks functions. * @f: callback function to be called. * The callback functions are defined in groups, according to * each element at &struct v4l2_subdev_ops. * @args: arguments for @f. * * This is similar to v4l2_subdev_call_state_active(), except that as this * version allocates a new state, this is only usable for * V4L2_SUBDEV_FORMAT_TRY use cases. * * Note: only legacy non-MC drivers may need this macro. */ #define v4l2_subdev_call_state_try(sd, o, f, args...) \ ({ \ int __result; \ static struct lock_class_key __key; \ const char *name = KBUILD_BASENAME \ ":" __stringify(__LINE__) ":state->lock"; \ struct v4l2_subdev_state *state = \ __v4l2_subdev_state_alloc(sd, name, &__key); \ v4l2_subdev_lock_state(state); \ __result = v4l2_subdev_call(sd, o, f, state, ##args); \ v4l2_subdev_unlock_state(state); \ __v4l2_subdev_state_free(state); \ __result; \ }) /** * v4l2_subdev_has_op - Checks if a subdev defines a certain operation. * * @sd: pointer to the &struct v4l2_subdev * @o: The group of callback functions in &struct v4l2_subdev_ops * which @f is a part of. * @f: callback function to be checked for its existence. */ #define v4l2_subdev_has_op(sd, o, f) \ ((sd)->ops->o && (sd)->ops->o->f) /** * v4l2_subdev_notify_event() - Delivers event notification for subdevice * @sd: The subdev for which to deliver the event * @ev: The event to deliver * * Will deliver the specified event to all userspace event listeners which are * subscribed to the v42l subdev event queue as well as to the bridge driver * using the notify callback. The notification type for the notify callback * will be %V4L2_DEVICE_NOTIFY_EVENT. */ void v4l2_subdev_notify_event(struct v4l2_subdev *sd, const struct v4l2_event *ev); #endif /* _V4L2_SUBDEV_H */
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