forked from Minki/linux
44f0079ec7
Failed requests will now generate a one-time warning message instead of the usual "Failed to query..." error, which should be more user-friendly. The driver will also recover automatically from failed GET_MIN/GET_MAX requests when the device is half-broken without requiring the MINMAX quirk (fully broken devices still need the quirk). Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
812 lines
23 KiB
C
812 lines
23 KiB
C
#ifndef _USB_VIDEO_H_
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#define _USB_VIDEO_H_
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#include <linux/kernel.h>
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#include <linux/videodev2.h>
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/*
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* Dynamic controls
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*/
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/* Data types for UVC control data */
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#define UVC_CTRL_DATA_TYPE_RAW 0
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#define UVC_CTRL_DATA_TYPE_SIGNED 1
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#define UVC_CTRL_DATA_TYPE_UNSIGNED 2
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#define UVC_CTRL_DATA_TYPE_BOOLEAN 3
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#define UVC_CTRL_DATA_TYPE_ENUM 4
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#define UVC_CTRL_DATA_TYPE_BITMASK 5
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/* Control flags */
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#define UVC_CONTROL_SET_CUR (1 << 0)
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#define UVC_CONTROL_GET_CUR (1 << 1)
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#define UVC_CONTROL_GET_MIN (1 << 2)
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#define UVC_CONTROL_GET_MAX (1 << 3)
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#define UVC_CONTROL_GET_RES (1 << 4)
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#define UVC_CONTROL_GET_DEF (1 << 5)
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/* Control should be saved at suspend and restored at resume. */
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#define UVC_CONTROL_RESTORE (1 << 6)
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/* Control can be updated by the camera. */
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#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
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#define UVC_CONTROL_GET_RANGE (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
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UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
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UVC_CONTROL_GET_DEF)
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struct uvc_xu_control_info {
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__u8 entity[16];
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__u8 index;
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__u8 selector;
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__u16 size;
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__u32 flags;
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};
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struct uvc_xu_control_mapping {
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__u32 id;
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__u8 name[32];
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__u8 entity[16];
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__u8 selector;
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__u8 size;
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__u8 offset;
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enum v4l2_ctrl_type v4l2_type;
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__u32 data_type;
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};
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struct uvc_xu_control {
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__u8 unit;
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__u8 selector;
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__u16 size;
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__u8 __user *data;
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};
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#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info)
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#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping)
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#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control)
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#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control)
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#ifdef __KERNEL__
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#include <linux/poll.h>
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/* --------------------------------------------------------------------------
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* UVC constants
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*/
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#define SC_UNDEFINED 0x00
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#define SC_VIDEOCONTROL 0x01
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#define SC_VIDEOSTREAMING 0x02
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#define SC_VIDEO_INTERFACE_COLLECTION 0x03
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#define PC_PROTOCOL_UNDEFINED 0x00
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#define CS_UNDEFINED 0x20
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#define CS_DEVICE 0x21
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#define CS_CONFIGURATION 0x22
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#define CS_STRING 0x23
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#define CS_INTERFACE 0x24
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#define CS_ENDPOINT 0x25
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/* VideoControl class specific interface descriptor */
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#define VC_DESCRIPTOR_UNDEFINED 0x00
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#define VC_HEADER 0x01
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#define VC_INPUT_TERMINAL 0x02
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#define VC_OUTPUT_TERMINAL 0x03
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#define VC_SELECTOR_UNIT 0x04
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#define VC_PROCESSING_UNIT 0x05
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#define VC_EXTENSION_UNIT 0x06
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/* VideoStreaming class specific interface descriptor */
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#define VS_UNDEFINED 0x00
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#define VS_INPUT_HEADER 0x01
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#define VS_OUTPUT_HEADER 0x02
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#define VS_STILL_IMAGE_FRAME 0x03
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#define VS_FORMAT_UNCOMPRESSED 0x04
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#define VS_FRAME_UNCOMPRESSED 0x05
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#define VS_FORMAT_MJPEG 0x06
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#define VS_FRAME_MJPEG 0x07
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#define VS_FORMAT_MPEG2TS 0x0a
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#define VS_FORMAT_DV 0x0c
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#define VS_COLORFORMAT 0x0d
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#define VS_FORMAT_FRAME_BASED 0x10
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#define VS_FRAME_FRAME_BASED 0x11
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#define VS_FORMAT_STREAM_BASED 0x12
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/* Endpoint type */
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#define EP_UNDEFINED 0x00
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#define EP_GENERAL 0x01
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#define EP_ENDPOINT 0x02
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#define EP_INTERRUPT 0x03
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/* Request codes */
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#define RC_UNDEFINED 0x00
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#define SET_CUR 0x01
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#define GET_CUR 0x81
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#define GET_MIN 0x82
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#define GET_MAX 0x83
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#define GET_RES 0x84
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#define GET_LEN 0x85
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#define GET_INFO 0x86
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#define GET_DEF 0x87
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/* VideoControl interface controls */
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#define VC_CONTROL_UNDEFINED 0x00
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#define VC_VIDEO_POWER_MODE_CONTROL 0x01
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#define VC_REQUEST_ERROR_CODE_CONTROL 0x02
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/* Terminal controls */
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#define TE_CONTROL_UNDEFINED 0x00
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/* Selector Unit controls */
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#define SU_CONTROL_UNDEFINED 0x00
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#define SU_INPUT_SELECT_CONTROL 0x01
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/* Camera Terminal controls */
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#define CT_CONTROL_UNDEFINED 0x00
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#define CT_SCANNING_MODE_CONTROL 0x01
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#define CT_AE_MODE_CONTROL 0x02
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#define CT_AE_PRIORITY_CONTROL 0x03
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#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04
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#define CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05
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#define CT_FOCUS_ABSOLUTE_CONTROL 0x06
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#define CT_FOCUS_RELATIVE_CONTROL 0x07
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#define CT_FOCUS_AUTO_CONTROL 0x08
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#define CT_IRIS_ABSOLUTE_CONTROL 0x09
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#define CT_IRIS_RELATIVE_CONTROL 0x0a
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#define CT_ZOOM_ABSOLUTE_CONTROL 0x0b
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#define CT_ZOOM_RELATIVE_CONTROL 0x0c
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#define CT_PANTILT_ABSOLUTE_CONTROL 0x0d
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#define CT_PANTILT_RELATIVE_CONTROL 0x0e
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#define CT_ROLL_ABSOLUTE_CONTROL 0x0f
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#define CT_ROLL_RELATIVE_CONTROL 0x10
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#define CT_PRIVACY_CONTROL 0x11
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/* Processing Unit controls */
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#define PU_CONTROL_UNDEFINED 0x00
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#define PU_BACKLIGHT_COMPENSATION_CONTROL 0x01
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#define PU_BRIGHTNESS_CONTROL 0x02
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#define PU_CONTRAST_CONTROL 0x03
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#define PU_GAIN_CONTROL 0x04
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#define PU_POWER_LINE_FREQUENCY_CONTROL 0x05
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#define PU_HUE_CONTROL 0x06
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#define PU_SATURATION_CONTROL 0x07
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#define PU_SHARPNESS_CONTROL 0x08
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#define PU_GAMMA_CONTROL 0x09
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#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0a
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#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0b
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#define PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0c
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#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0d
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#define PU_DIGITAL_MULTIPLIER_CONTROL 0x0e
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#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0f
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#define PU_HUE_AUTO_CONTROL 0x10
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#define PU_ANALOG_VIDEO_STANDARD_CONTROL 0x11
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#define PU_ANALOG_LOCK_STATUS_CONTROL 0x12
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#define LXU_MOTOR_PANTILT_RELATIVE_CONTROL 0x01
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#define LXU_MOTOR_PANTILT_RESET_CONTROL 0x02
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#define LXU_MOTOR_FOCUS_MOTOR_CONTROL 0x03
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/* VideoStreaming interface controls */
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#define VS_CONTROL_UNDEFINED 0x00
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#define VS_PROBE_CONTROL 0x01
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#define VS_COMMIT_CONTROL 0x02
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#define VS_STILL_PROBE_CONTROL 0x03
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#define VS_STILL_COMMIT_CONTROL 0x04
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#define VS_STILL_IMAGE_TRIGGER_CONTROL 0x05
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#define VS_STREAM_ERROR_CODE_CONTROL 0x06
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#define VS_GENERATE_KEY_FRAME_CONTROL 0x07
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#define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08
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#define VS_SYNC_DELAY_CONTROL 0x09
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#define TT_VENDOR_SPECIFIC 0x0100
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#define TT_STREAMING 0x0101
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/* Input Terminal types */
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#define ITT_VENDOR_SPECIFIC 0x0200
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#define ITT_CAMERA 0x0201
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#define ITT_MEDIA_TRANSPORT_INPUT 0x0202
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/* Output Terminal types */
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#define OTT_VENDOR_SPECIFIC 0x0300
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#define OTT_DISPLAY 0x0301
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#define OTT_MEDIA_TRANSPORT_OUTPUT 0x0302
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/* External Terminal types */
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#define EXTERNAL_VENDOR_SPECIFIC 0x0400
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#define COMPOSITE_CONNECTOR 0x0401
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#define SVIDEO_CONNECTOR 0x0402
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#define COMPONENT_CONNECTOR 0x0403
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#define UVC_TERM_INPUT 0x0000
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#define UVC_TERM_OUTPUT 0x8000
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#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
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#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
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#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
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#define UVC_ENTITY_IS_ITERM(entity) \
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(((entity)->type & 0x8000) == UVC_TERM_INPUT)
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#define UVC_ENTITY_IS_OTERM(entity) \
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(((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
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#define UVC_STATUS_TYPE_CONTROL 1
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#define UVC_STATUS_TYPE_STREAMING 2
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/* ------------------------------------------------------------------------
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* GUIDs
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*/
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#define UVC_GUID_UVC_CAMERA \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
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#define UVC_GUID_UVC_OUTPUT \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
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#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
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#define UVC_GUID_UVC_PROCESSING \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
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#define UVC_GUID_UVC_SELECTOR \
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
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#define UVC_GUID_LOGITECH_DEV_INFO \
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{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
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0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e}
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#define UVC_GUID_LOGITECH_USER_HW \
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{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
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0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1f}
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#define UVC_GUID_LOGITECH_VIDEO \
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{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
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0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x50}
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#define UVC_GUID_LOGITECH_MOTOR \
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{0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
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0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x56}
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#define UVC_GUID_FORMAT_MJPEG \
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{ 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_YUY2 \
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{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_NV12 \
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{ 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_YV12 \
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{ 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_I420 \
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{ 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_UYVY \
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{ 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_Y800 \
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{ 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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#define UVC_GUID_FORMAT_BY8 \
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{ 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
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/* ------------------------------------------------------------------------
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* Driver specific constants.
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*/
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#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)
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/* Number of isochronous URBs. */
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#define UVC_URBS 5
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/* Maximum number of packets per isochronous URB. */
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#define UVC_MAX_ISO_PACKETS 40
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/* Maximum frame size in bytes, for sanity checking. */
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#define UVC_MAX_FRAME_SIZE (16*1024*1024)
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/* Maximum number of video buffers. */
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#define UVC_MAX_VIDEO_BUFFERS 32
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/* Maximum status buffer size in bytes of interrupt URB. */
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#define UVC_MAX_STATUS_SIZE 16
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#define UVC_CTRL_CONTROL_TIMEOUT 300
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#define UVC_CTRL_STREAMING_TIMEOUT 1000
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/* Devices quirks */
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#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
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#define UVC_QUIRK_PROBE_MINMAX 0x00000002
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#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
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#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
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#define UVC_QUIRK_STREAM_NO_FID 0x00000010
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#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
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/* Format flags */
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#define UVC_FMT_FLAG_COMPRESSED 0x00000001
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#define UVC_FMT_FLAG_STREAM 0x00000002
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/* ------------------------------------------------------------------------
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* Structures.
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*/
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struct uvc_device;
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/* TODO: Put the most frequently accessed fields at the beginning of
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* structures to maximize cache efficiency.
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*/
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struct uvc_streaming_control {
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__u16 bmHint;
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__u8 bFormatIndex;
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__u8 bFrameIndex;
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__u32 dwFrameInterval;
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__u16 wKeyFrameRate;
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__u16 wPFrameRate;
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__u16 wCompQuality;
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__u16 wCompWindowSize;
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__u16 wDelay;
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__u32 dwMaxVideoFrameSize;
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__u32 dwMaxPayloadTransferSize;
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__u32 dwClockFrequency;
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__u8 bmFramingInfo;
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__u8 bPreferedVersion;
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__u8 bMinVersion;
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__u8 bMaxVersion;
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};
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struct uvc_menu_info {
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__u32 value;
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__u8 name[32];
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};
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struct uvc_control_info {
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struct list_head list;
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struct list_head mappings;
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__u8 entity[16];
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__u8 index;
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__u8 selector;
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__u16 size;
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__u32 flags;
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};
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struct uvc_control_mapping {
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struct list_head list;
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struct uvc_control_info *ctrl;
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__u32 id;
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__u8 name[32];
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__u8 entity[16];
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__u8 selector;
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__u8 size;
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__u8 offset;
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enum v4l2_ctrl_type v4l2_type;
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__u32 data_type;
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struct uvc_menu_info *menu_info;
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__u32 menu_count;
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};
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struct uvc_control {
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struct uvc_entity *entity;
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struct uvc_control_info *info;
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__u8 index; /* Used to match the uvc_control entry with a
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uvc_control_info. */
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__u8 dirty : 1,
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loaded : 1,
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modified : 1;
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__u8 *data;
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};
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struct uvc_format_desc {
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char *name;
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__u8 guid[16];
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__u32 fcc;
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};
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/* The term 'entity' refers to both UVC units and UVC terminals.
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*
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* The type field is either the terminal type (wTerminalType in the terminal
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* descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
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* As the bDescriptorSubtype field is one byte long, the type value will
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* always have a null MSB for units. All terminal types defined by the UVC
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* specification have a non-null MSB, so it is safe to use the MSB to
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* differentiate between units and terminals as long as the descriptor parsing
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* code makes sure terminal types have a non-null MSB.
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*
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* For terminals, the type's most significant bit stores the terminal
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* direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
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* always be accessed with the UVC_ENTITY_* macros and never directly.
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*/
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struct uvc_entity {
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struct list_head list; /* Entity as part of a UVC device. */
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struct list_head chain; /* Entity as part of a video device
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* chain. */
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__u8 id;
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__u16 type;
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char name[64];
|
|
|
|
union {
|
|
struct {
|
|
__u16 wObjectiveFocalLengthMin;
|
|
__u16 wObjectiveFocalLengthMax;
|
|
__u16 wOcularFocalLength;
|
|
__u8 bControlSize;
|
|
__u8 *bmControls;
|
|
} camera;
|
|
|
|
struct {
|
|
__u8 bControlSize;
|
|
__u8 *bmControls;
|
|
__u8 bTransportModeSize;
|
|
__u8 *bmTransportModes;
|
|
} media;
|
|
|
|
struct {
|
|
__u8 bSourceID;
|
|
} output;
|
|
|
|
struct {
|
|
__u8 bSourceID;
|
|
__u16 wMaxMultiplier;
|
|
__u8 bControlSize;
|
|
__u8 *bmControls;
|
|
__u8 bmVideoStandards;
|
|
} processing;
|
|
|
|
struct {
|
|
__u8 bNrInPins;
|
|
__u8 *baSourceID;
|
|
} selector;
|
|
|
|
struct {
|
|
__u8 guidExtensionCode[16];
|
|
__u8 bNumControls;
|
|
__u8 bNrInPins;
|
|
__u8 *baSourceID;
|
|
__u8 bControlSize;
|
|
__u8 *bmControls;
|
|
__u8 *bmControlsType;
|
|
} extension;
|
|
};
|
|
|
|
unsigned int ncontrols;
|
|
struct uvc_control *controls;
|
|
};
|
|
|
|
struct uvc_frame {
|
|
__u8 bFrameIndex;
|
|
__u8 bmCapabilities;
|
|
__u16 wWidth;
|
|
__u16 wHeight;
|
|
__u32 dwMinBitRate;
|
|
__u32 dwMaxBitRate;
|
|
__u32 dwMaxVideoFrameBufferSize;
|
|
__u8 bFrameIntervalType;
|
|
__u32 dwDefaultFrameInterval;
|
|
__u32 *dwFrameInterval;
|
|
};
|
|
|
|
struct uvc_format {
|
|
__u8 type;
|
|
__u8 index;
|
|
__u8 bpp;
|
|
__u8 colorspace;
|
|
__u32 fcc;
|
|
__u32 flags;
|
|
|
|
char name[32];
|
|
|
|
unsigned int nframes;
|
|
struct uvc_frame *frame;
|
|
};
|
|
|
|
struct uvc_streaming_header {
|
|
__u8 bNumFormats;
|
|
__u8 bEndpointAddress;
|
|
__u8 bTerminalLink;
|
|
__u8 bControlSize;
|
|
__u8 *bmaControls;
|
|
/* The following fields are used by input headers only. */
|
|
__u8 bmInfo;
|
|
__u8 bStillCaptureMethod;
|
|
__u8 bTriggerSupport;
|
|
__u8 bTriggerUsage;
|
|
};
|
|
|
|
struct uvc_streaming {
|
|
struct list_head list;
|
|
|
|
struct usb_interface *intf;
|
|
int intfnum;
|
|
__u16 maxpsize;
|
|
|
|
struct uvc_streaming_header header;
|
|
|
|
unsigned int nformats;
|
|
struct uvc_format *format;
|
|
|
|
struct uvc_streaming_control ctrl;
|
|
struct uvc_format *cur_format;
|
|
struct uvc_frame *cur_frame;
|
|
|
|
struct mutex mutex;
|
|
};
|
|
|
|
enum uvc_buffer_state {
|
|
UVC_BUF_STATE_IDLE = 0,
|
|
UVC_BUF_STATE_QUEUED = 1,
|
|
UVC_BUF_STATE_ACTIVE = 2,
|
|
UVC_BUF_STATE_DONE = 3,
|
|
UVC_BUF_STATE_ERROR = 4,
|
|
};
|
|
|
|
struct uvc_buffer {
|
|
unsigned long vma_use_count;
|
|
struct list_head stream;
|
|
|
|
/* Touched by interrupt handler. */
|
|
struct v4l2_buffer buf;
|
|
struct list_head queue;
|
|
wait_queue_head_t wait;
|
|
enum uvc_buffer_state state;
|
|
};
|
|
|
|
#define UVC_QUEUE_STREAMING (1 << 0)
|
|
#define UVC_QUEUE_DISCONNECTED (1 << 1)
|
|
#define UVC_QUEUE_DROP_INCOMPLETE (1 << 2)
|
|
|
|
struct uvc_video_queue {
|
|
void *mem;
|
|
unsigned int flags;
|
|
__u32 sequence;
|
|
|
|
unsigned int count;
|
|
unsigned int buf_size;
|
|
struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
|
|
struct mutex mutex; /* protects buffers and mainqueue */
|
|
spinlock_t irqlock; /* protects irqqueue */
|
|
|
|
struct list_head mainqueue;
|
|
struct list_head irqqueue;
|
|
};
|
|
|
|
struct uvc_video_device {
|
|
struct uvc_device *dev;
|
|
struct video_device *vdev;
|
|
atomic_t active;
|
|
unsigned int frozen : 1;
|
|
|
|
struct list_head iterms;
|
|
struct uvc_entity *oterm;
|
|
struct uvc_entity *processing;
|
|
struct uvc_entity *selector;
|
|
struct list_head extensions;
|
|
struct mutex ctrl_mutex;
|
|
|
|
struct uvc_video_queue queue;
|
|
|
|
/* Video streaming object, must always be non-NULL. */
|
|
struct uvc_streaming *streaming;
|
|
|
|
void (*decode) (struct urb *urb, struct uvc_video_device *video,
|
|
struct uvc_buffer *buf);
|
|
|
|
/* Context data used by the bulk completion handler. */
|
|
struct {
|
|
__u8 header[256];
|
|
unsigned int header_size;
|
|
int skip_payload;
|
|
__u32 payload_size;
|
|
__u32 max_payload_size;
|
|
} bulk;
|
|
|
|
struct urb *urb[UVC_URBS];
|
|
char *urb_buffer[UVC_URBS];
|
|
dma_addr_t urb_dma[UVC_URBS];
|
|
unsigned int urb_size;
|
|
|
|
__u8 last_fid;
|
|
};
|
|
|
|
enum uvc_device_state {
|
|
UVC_DEV_DISCONNECTED = 1,
|
|
};
|
|
|
|
struct uvc_device {
|
|
struct usb_device *udev;
|
|
struct usb_interface *intf;
|
|
unsigned long warnings;
|
|
__u32 quirks;
|
|
int intfnum;
|
|
char name[32];
|
|
|
|
enum uvc_device_state state;
|
|
struct kref kref;
|
|
struct list_head list;
|
|
|
|
/* Video control interface */
|
|
__u16 uvc_version;
|
|
__u32 clock_frequency;
|
|
|
|
struct list_head entities;
|
|
|
|
struct uvc_video_device video;
|
|
|
|
/* Status Interrupt Endpoint */
|
|
struct usb_host_endpoint *int_ep;
|
|
struct urb *int_urb;
|
|
__u8 *status;
|
|
struct input_dev *input;
|
|
|
|
/* Video Streaming interfaces */
|
|
struct list_head streaming;
|
|
};
|
|
|
|
enum uvc_handle_state {
|
|
UVC_HANDLE_PASSIVE = 0,
|
|
UVC_HANDLE_ACTIVE = 1,
|
|
};
|
|
|
|
struct uvc_fh {
|
|
struct uvc_video_device *device;
|
|
enum uvc_handle_state state;
|
|
};
|
|
|
|
struct uvc_driver {
|
|
struct usb_driver driver;
|
|
|
|
struct mutex open_mutex; /* protects from open/disconnect race */
|
|
|
|
struct list_head devices; /* struct uvc_device list */
|
|
struct list_head controls; /* struct uvc_control_info list */
|
|
struct mutex ctrl_mutex; /* protects controls and devices
|
|
lists */
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------
|
|
* Debugging, printing and logging
|
|
*/
|
|
|
|
#define UVC_TRACE_PROBE (1 << 0)
|
|
#define UVC_TRACE_DESCR (1 << 1)
|
|
#define UVC_TRACE_CONTROL (1 << 2)
|
|
#define UVC_TRACE_FORMAT (1 << 3)
|
|
#define UVC_TRACE_CAPTURE (1 << 4)
|
|
#define UVC_TRACE_CALLS (1 << 5)
|
|
#define UVC_TRACE_IOCTL (1 << 6)
|
|
#define UVC_TRACE_FRAME (1 << 7)
|
|
#define UVC_TRACE_SUSPEND (1 << 8)
|
|
#define UVC_TRACE_STATUS (1 << 9)
|
|
|
|
#define UVC_WARN_MINMAX 0
|
|
#define UVC_WARN_PROBE_DEF 1
|
|
|
|
extern unsigned int uvc_trace_param;
|
|
|
|
#define uvc_trace(flag, msg...) \
|
|
do { \
|
|
if (uvc_trace_param & flag) \
|
|
printk(KERN_DEBUG "uvcvideo: " msg); \
|
|
} while (0)
|
|
|
|
#define uvc_warn_once(dev, warn, msg...) \
|
|
do { \
|
|
if (!test_and_set_bit(warn, &dev->warnings)) \
|
|
printk(KERN_INFO "uvcvideo: " msg); \
|
|
} while (0)
|
|
|
|
#define uvc_printk(level, msg...) \
|
|
printk(level "uvcvideo: " msg)
|
|
|
|
#define UVC_GUID_FORMAT "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" \
|
|
"%02x%02x%02x%02x%02x%02x"
|
|
#define UVC_GUID_ARGS(guid) \
|
|
(guid)[3], (guid)[2], (guid)[1], (guid)[0], \
|
|
(guid)[5], (guid)[4], \
|
|
(guid)[7], (guid)[6], \
|
|
(guid)[8], (guid)[9], \
|
|
(guid)[10], (guid)[11], (guid)[12], \
|
|
(guid)[13], (guid)[14], (guid)[15]
|
|
|
|
/* --------------------------------------------------------------------------
|
|
* Internal functions.
|
|
*/
|
|
|
|
/* Core driver */
|
|
extern struct uvc_driver uvc_driver;
|
|
extern void uvc_delete(struct kref *kref);
|
|
|
|
/* Video buffers queue management. */
|
|
extern void uvc_queue_init(struct uvc_video_queue *queue);
|
|
extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
|
|
unsigned int nbuffers, unsigned int buflength);
|
|
extern int uvc_free_buffers(struct uvc_video_queue *queue);
|
|
extern int uvc_query_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
extern int uvc_queue_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf, int nonblocking);
|
|
extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
|
|
extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
|
|
extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
|
|
struct uvc_buffer *buf);
|
|
extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
|
|
struct file *file, poll_table *wait);
|
|
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
|
|
{
|
|
return queue->flags & UVC_QUEUE_STREAMING;
|
|
}
|
|
|
|
/* V4L2 interface */
|
|
extern struct file_operations uvc_fops;
|
|
|
|
/* Video */
|
|
extern int uvc_video_init(struct uvc_video_device *video);
|
|
extern int uvc_video_suspend(struct uvc_video_device *video);
|
|
extern int uvc_video_resume(struct uvc_video_device *video);
|
|
extern int uvc_video_enable(struct uvc_video_device *video, int enable);
|
|
extern int uvc_probe_video(struct uvc_video_device *video,
|
|
struct uvc_streaming_control *probe);
|
|
extern int uvc_commit_video(struct uvc_video_device *video,
|
|
struct uvc_streaming_control *ctrl);
|
|
extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
|
|
__u8 intfnum, __u8 cs, void *data, __u16 size);
|
|
|
|
/* Status */
|
|
extern int uvc_status_init(struct uvc_device *dev);
|
|
extern void uvc_status_cleanup(struct uvc_device *dev);
|
|
extern int uvc_status_suspend(struct uvc_device *dev);
|
|
extern int uvc_status_resume(struct uvc_device *dev);
|
|
|
|
/* Controls */
|
|
extern struct uvc_control *uvc_find_control(struct uvc_video_device *video,
|
|
__u32 v4l2_id, struct uvc_control_mapping **mapping);
|
|
extern int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
|
|
struct v4l2_queryctrl *v4l2_ctrl);
|
|
|
|
extern int uvc_ctrl_add_info(struct uvc_control_info *info);
|
|
extern int uvc_ctrl_add_mapping(struct uvc_control_mapping *mapping);
|
|
extern int uvc_ctrl_init_device(struct uvc_device *dev);
|
|
extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
|
|
extern int uvc_ctrl_resume_device(struct uvc_device *dev);
|
|
extern void uvc_ctrl_init(void);
|
|
|
|
extern int uvc_ctrl_begin(struct uvc_video_device *video);
|
|
extern int __uvc_ctrl_commit(struct uvc_video_device *video, int rollback);
|
|
static inline int uvc_ctrl_commit(struct uvc_video_device *video)
|
|
{
|
|
return __uvc_ctrl_commit(video, 0);
|
|
}
|
|
static inline int uvc_ctrl_rollback(struct uvc_video_device *video)
|
|
{
|
|
return __uvc_ctrl_commit(video, 1);
|
|
}
|
|
|
|
extern int uvc_ctrl_get(struct uvc_video_device *video,
|
|
struct v4l2_ext_control *xctrl);
|
|
extern int uvc_ctrl_set(struct uvc_video_device *video,
|
|
struct v4l2_ext_control *xctrl);
|
|
|
|
extern int uvc_xu_ctrl_query(struct uvc_video_device *video,
|
|
struct uvc_xu_control *ctrl, int set);
|
|
|
|
/* Utility functions */
|
|
extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
|
|
unsigned int n_terms, unsigned int threshold);
|
|
extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
|
|
uint32_t denominator);
|
|
extern struct usb_host_endpoint *uvc_find_endpoint(
|
|
struct usb_host_interface *alts, __u8 epaddr);
|
|
|
|
/* Quirks support */
|
|
void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video,
|
|
struct uvc_buffer *buf);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif
|
|
|