#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;
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 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.
-
- 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 - 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.
+ *
+ * @queryctrl: callback for VIDIOC_QUERYCTL ioctl handler code.
+ *
+ * @g_ctrl: callback for VIDIOC_G_CTRL ioctl handler code.
+ *
+ * @s_ctrl: callback for VIDIOC_S_CTRL ioctl handler code.
+ *
+ * @g_ext_ctrls: callback for VIDIOC_G_EXT_CTRLS ioctl handler code.
+ *
+ * @s_ext_ctrls: callback for VIDIOC_S_EXT_CTRLS ioctl handler code.
+ *
+ * @try_ext_ctrls: callback for VIDIOC_TRY_EXT_CTRLS ioctl handler code.
+ *
+ * @querymenu: callback for VIDIOC_QUERYMENU ioctl handler code.
+ *
+ * @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_G_REGISTER ioctl handler code.
+ *
+ * @s_register: callback for VIDIOC_G_REGISTER ioctl handler code.
+ *
+ * @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*.
+ *
+ * @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);
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 s_radio - Callbacks used when v4l device was opened in radio mode.
+ *
+ * @s_radio: callback for VIDIOC_S_RADIO ioctl handler code.
+ *
+ * @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
*/
struct v4l2_subdev_tuner_ops {
int (*s_radio)(struct v4l2_subdev *sd);
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 - 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);
/**
* struct v4l2_mbus_frame_desc_entry - media bus frame description structure
+ *
* @flags: V4L2_MBUS_FRAME_DESC_FL_* flags
* @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
* @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
unsigned short num_entries;
};
-/*
- 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.
-
- 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.
-
- 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_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
-
- g_mbus_config: get supported mediabus configurations
-
- s_mbus_config: set a certain mediabus configuration. This operation is added
- for compatibility with soc-camera drivers and should not be used by new
- software.
-
- 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.
+/**
+ * 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 v4l2_input
+ * struct.
+ *
+ * @s_stream: used to notify the driver that a video stream will start or has
+ * stopped.
+ *
+ * @cropcap: callback for VIDIOC_CROPCAP ioctl handler code.
+ *
+ * @g_crop: callback for VIDIOC_G_CROP ioctl handler code.
+ *
+ * @s_crop: callback for VIDIOC_S_CROP ioctl handler code.
+ *
+ * @g_parm: callback for VIDIOC_G_PARM ioctl handler code.
+ *
+ * @s_parm: callback for VIDIOC_S_PARM ioctl handler code.
+ *
+ * @g_frame_interval: callback for VIDIOC_G_FRAMEINTERVAL ioctl handler code.
+ *
+ * @s_frame_interval: callback for VIDIOC_S_FRAMEINTERVAL ioctl handler code.
+ *
+ * @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.
+ *
+ * @g_mbus_config: get supported mediabus configurations
+ *
+ * @s_mbus_config: set a certain mediabus configuration. This operation is added
+ * for compatibility with soc-camera drivers and should not be used by new
+ * software.
+ *
+ * @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.
*/
struct v4l2_subdev_video_ops {
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
struct v4l2_dv_timings *timings);
int (*query_dv_timings)(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings);
- int (*enum_mbus_fmt)(struct v4l2_subdev *sd, unsigned int index,
- u32 *code);
- 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);
int (*g_mbus_config)(struct v4l2_subdev *sd,
struct v4l2_mbus_config *cfg);
int (*s_mbus_config)(struct v4l2_subdev *sd,
unsigned int *size);
};
-/*
- 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 - 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 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).
+ *
+ * @g_sliced_vbi_cap: callback for VIDIOC_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);
/**
* 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_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.
- * @get_frame_desc: set the low level media bus frame parameters, @fd array
+ *
+ * @set_frame_desc: set the low level media bus frame parameters, @fd array
* may be adjusted by the subdev driver to device capabilities.
*/
struct v4l2_subdev_pad_ops {
struct video_device *devnode;
/* pointer to the physical device, if any */
struct device *dev;
+ /* The device_node of the subdev, usually the same as dev->of_node. */
+ struct device_node *of_node;
/* Links this subdev to a global subdev_list or @notifier->done list. */
struct list_head async_list;
/* Pointer to respective struct v4l2_async_subdev. */
#define v4l2_subdev_has_op(sd, o, f) \
((sd)->ops->o && (sd)->ops->o->f)
+void v4l2_subdev_notify_event(struct v4l2_subdev *sd,
+ const struct v4l2_event *ev);
+
#endif
Code Review / kvmfornfv.git / blobdiff