791 lines
21 KiB
C
791 lines
21 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _USB_VIDEO_H_
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#define _USB_VIDEO_H_
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#ifndef __KERNEL__
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#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
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#endif /* __KERNEL__ */
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#include <linux/atomic.h>
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#include <linux/kernel.h>
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#include <linux/poll.h>
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#include <linux/usb.h>
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#include <linux/usb/video.h>
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#include <linux/uvcvideo.h>
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#include <linux/videodev2.h>
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#include <linux/workqueue.h>
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#include <media/media-device.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fh.h>
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#include <media/videobuf2-v4l2.h>
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/* --------------------------------------------------------------------------
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* UVC constants
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*/
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#define UVC_TERM_INPUT 0x0000
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#define UVC_TERM_OUTPUT 0x8000
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#define UVC_TERM_DIRECTION(term) ((term)->type & 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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(UVC_ENTITY_IS_TERM(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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(UVC_ENTITY_IS_TERM(entity) && \
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((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
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#define UVC_EXT_GPIO_UNIT 0x7ffe
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#define UVC_EXT_GPIO_UNIT_ID 0x100
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/* ------------------------------------------------------------------------
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* Driver specific constants.
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*/
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#define DRIVER_VERSION "1.1.1"
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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 URB. */
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#define UVC_MAX_PACKETS 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 5000
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#define UVC_CTRL_STREAMING_TIMEOUT 5000
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/* Maximum allowed number of control mappings per device */
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#define UVC_MAX_CONTROL_MAPPINGS 1024
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#define UVC_MAX_CONTROL_MENU_ENTRIES 32
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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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#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
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#define UVC_QUIRK_PROBE_DEF 0x00000100
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#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
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#define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
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#define UVC_QUIRK_FORCE_Y8 0x00000800
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#define UVC_QUIRK_FORCE_BPP 0x00001000
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#define UVC_QUIRK_WAKE_AUTOSUSPEND 0x00002000
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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 gpio_desc;
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struct sg_table;
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struct uvc_device;
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/*
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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_control_info {
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struct list_head mappings;
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u8 entity[16];
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u8 index; /* Bit index in bmControls */
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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 list_head ev_subs;
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u32 id;
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char *name;
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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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const struct uvc_menu_info *menu_info;
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unsigned long menu_mask;
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u32 master_id;
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s32 master_manual;
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u32 slave_ids[2];
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s32 (*get)(struct uvc_control_mapping *mapping, u8 query,
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const u8 *data);
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void (*set)(struct uvc_control_mapping *mapping, s32 value,
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u8 *data);
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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 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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cached:1,
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initialized:1;
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u8 *uvc_data;
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struct uvc_fh *handle; /* File handle that last changed the control. */
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};
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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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#define UVC_ENTITY_FLAG_DEFAULT (1 << 0)
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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 chain. */
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unsigned int flags;
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/*
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* Entities exposed by the UVC device use IDs 0-255, extra entities
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* implemented by the driver (such as the GPIO entity) use IDs 256 and
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* up.
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*/
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u16 id;
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u16 type;
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char name[64];
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u8 guid[16];
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/* Media controller-related fields. */
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struct video_device *vdev;
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struct v4l2_subdev subdev;
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unsigned int num_pads;
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unsigned int num_links;
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struct media_pad *pads;
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union {
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struct {
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u16 wObjectiveFocalLengthMin;
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u16 wObjectiveFocalLengthMax;
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u16 wOcularFocalLength;
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u8 bControlSize;
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u8 *bmControls;
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} camera;
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struct {
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u8 bControlSize;
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u8 *bmControls;
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u8 bTransportModeSize;
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u8 *bmTransportModes;
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} media;
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struct {
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} output;
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struct {
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u16 wMaxMultiplier;
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u8 bControlSize;
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u8 *bmControls;
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u8 bmVideoStandards;
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} processing;
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struct {
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} selector;
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struct {
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u8 bNumControls;
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u8 bControlSize;
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u8 *bmControls;
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u8 *bmControlsType;
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} extension;
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struct {
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u8 bControlSize;
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u8 *bmControls;
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struct gpio_desc *gpio_privacy;
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int irq;
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} gpio;
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};
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u8 bNrInPins;
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u8 *baSourceID;
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int (*get_info)(struct uvc_device *dev, struct uvc_entity *entity,
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u8 cs, u8 *caps);
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int (*get_cur)(struct uvc_device *dev, struct uvc_entity *entity,
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u8 cs, void *data, u16 size);
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unsigned int ncontrols;
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struct uvc_control *controls;
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};
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struct uvc_frame {
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u8 bFrameIndex;
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u8 bmCapabilities;
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u16 wWidth;
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u16 wHeight;
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u32 dwMinBitRate;
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u32 dwMaxBitRate;
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u32 dwMaxVideoFrameBufferSize;
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u8 bFrameIntervalType;
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u32 dwDefaultFrameInterval;
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u32 *dwFrameInterval;
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};
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struct uvc_format {
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u8 type;
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u8 index;
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u8 bpp;
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enum v4l2_colorspace colorspace;
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enum v4l2_xfer_func xfer_func;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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u32 fcc;
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u32 flags;
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unsigned int nframes;
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struct uvc_frame *frame;
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};
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struct uvc_streaming_header {
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u8 bNumFormats;
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u8 bEndpointAddress;
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u8 bTerminalLink;
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u8 bControlSize;
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u8 *bmaControls;
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/* The following fields are used by input headers only. */
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u8 bmInfo;
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u8 bStillCaptureMethod;
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u8 bTriggerSupport;
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u8 bTriggerUsage;
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};
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enum uvc_buffer_state {
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UVC_BUF_STATE_IDLE = 0,
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UVC_BUF_STATE_QUEUED = 1,
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UVC_BUF_STATE_ACTIVE = 2,
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UVC_BUF_STATE_READY = 3,
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UVC_BUF_STATE_DONE = 4,
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UVC_BUF_STATE_ERROR = 5,
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};
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struct uvc_buffer {
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struct vb2_v4l2_buffer buf;
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struct list_head queue;
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enum uvc_buffer_state state;
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unsigned int error;
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void *mem;
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unsigned int length;
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unsigned int bytesused;
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u32 pts;
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/* Asynchronous buffer handling. */
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struct kref ref;
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};
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#define UVC_QUEUE_DISCONNECTED (1 << 0)
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#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
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struct uvc_video_queue {
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struct vb2_queue queue;
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struct mutex mutex; /* Protects queue */
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unsigned int flags;
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unsigned int buf_used;
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spinlock_t irqlock; /* Protects irqqueue */
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struct list_head irqqueue;
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};
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struct uvc_video_chain {
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struct uvc_device *dev;
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struct list_head list;
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struct list_head entities; /* All entities */
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struct uvc_entity *processing; /* Processing unit */
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struct uvc_entity *selector; /* Selector unit */
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struct mutex ctrl_mutex; /* Protects ctrl.info */
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struct v4l2_prio_state prio; /* V4L2 priority state */
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u32 caps; /* V4L2 chain-wide caps */
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u8 ctrl_class_bitmap; /* Bitmap of valid classes */
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};
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struct uvc_stats_frame {
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unsigned int size; /* Number of bytes captured */
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unsigned int first_data; /* Index of the first non-empty packet */
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unsigned int nb_packets; /* Number of packets */
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unsigned int nb_empty; /* Number of empty packets */
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unsigned int nb_invalid; /* Number of packets with an invalid header */
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unsigned int nb_errors; /* Number of packets with the error bit set */
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unsigned int nb_pts; /* Number of packets with a PTS timestamp */
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unsigned int nb_pts_diffs; /* Number of PTS differences inside a frame */
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unsigned int last_pts_diff; /* Index of the last PTS difference */
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bool has_initial_pts; /* Whether the first non-empty packet has a PTS */
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bool has_early_pts; /* Whether a PTS is present before the first non-empty packet */
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u32 pts; /* PTS of the last packet */
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unsigned int nb_scr; /* Number of packets with a SCR timestamp */
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unsigned int nb_scr_diffs; /* Number of SCR.STC differences inside a frame */
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u16 scr_sof; /* SCR.SOF of the last packet */
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u32 scr_stc; /* SCR.STC of the last packet */
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};
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struct uvc_stats_stream {
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ktime_t start_ts; /* Stream start timestamp */
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ktime_t stop_ts; /* Stream stop timestamp */
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unsigned int nb_frames; /* Number of frames */
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unsigned int nb_packets; /* Number of packets */
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unsigned int nb_empty; /* Number of empty packets */
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unsigned int nb_invalid; /* Number of packets with an invalid header */
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unsigned int nb_errors; /* Number of packets with the error bit set */
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unsigned int nb_pts_constant; /* Number of frames with constant PTS */
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unsigned int nb_pts_early; /* Number of frames with early PTS */
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unsigned int nb_pts_initial; /* Number of frames with initial PTS */
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unsigned int nb_scr_count_ok; /* Number of frames with at least one SCR per non empty packet */
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unsigned int nb_scr_diffs_ok; /* Number of frames with varying SCR.STC */
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unsigned int scr_sof_count; /* STC.SOF counter accumulated since stream start */
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unsigned int scr_sof; /* STC.SOF of the last packet */
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unsigned int min_sof; /* Minimum STC.SOF value */
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unsigned int max_sof; /* Maximum STC.SOF value */
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};
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#define UVC_METADATA_BUF_SIZE 10240
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/**
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* struct uvc_copy_op: Context structure to schedule asynchronous memcpy
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*
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* @buf: active buf object for this operation
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* @dst: copy destination address
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* @src: copy source address
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* @len: copy length
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*/
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struct uvc_copy_op {
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struct uvc_buffer *buf;
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void *dst;
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const __u8 *src;
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size_t len;
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};
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/**
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* struct uvc_urb - URB context management structure
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*
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* @urb: the URB described by this context structure
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* @stream: UVC streaming context
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* @buffer: memory storage for the URB
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* @dma: Allocated DMA handle
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* @sgt: sgt_table with the urb locations in memory
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* @async_operations: counter to indicate the number of copy operations
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* @copy_operations: work descriptors for asynchronous copy operations
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* @work: work queue entry for asynchronous decode
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*/
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struct uvc_urb {
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struct urb *urb;
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struct uvc_streaming *stream;
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char *buffer;
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dma_addr_t dma;
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struct sg_table *sgt;
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unsigned int async_operations;
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struct uvc_copy_op copy_operations[UVC_MAX_PACKETS];
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struct work_struct work;
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};
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struct uvc_streaming {
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struct list_head list;
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struct uvc_device *dev;
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struct video_device vdev;
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struct uvc_video_chain *chain;
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atomic_t active;
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struct usb_interface *intf;
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int intfnum;
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u16 maxpsize;
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struct uvc_streaming_header header;
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enum v4l2_buf_type type;
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unsigned int nformats;
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struct uvc_format *format;
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struct uvc_streaming_control ctrl;
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struct uvc_format *def_format;
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struct uvc_format *cur_format;
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struct uvc_frame *cur_frame;
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/*
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* Protect access to ctrl, cur_format, cur_frame and hardware video
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* probe control.
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*/
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struct mutex mutex;
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/* Buffers queue. */
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unsigned int frozen : 1;
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struct uvc_video_queue queue;
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struct workqueue_struct *async_wq;
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void (*decode)(struct uvc_urb *uvc_urb, struct uvc_buffer *buf,
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struct uvc_buffer *meta_buf);
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struct {
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struct video_device vdev;
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struct uvc_video_queue queue;
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u32 format;
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} meta;
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/* Context data used by the bulk completion handler. */
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struct {
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u8 header[256];
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unsigned int header_size;
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int skip_payload;
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u32 payload_size;
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u32 max_payload_size;
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} bulk;
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struct uvc_urb uvc_urb[UVC_URBS];
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unsigned int urb_size;
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u32 sequence;
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u8 last_fid;
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/* debugfs */
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struct dentry *debugfs_dir;
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struct {
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struct uvc_stats_frame frame;
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struct uvc_stats_stream stream;
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} stats;
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/* Timestamps support. */
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struct uvc_clock {
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struct uvc_clock_sample {
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u32 dev_stc;
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u16 dev_sof;
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u16 host_sof;
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ktime_t host_time;
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} *samples;
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unsigned int head;
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unsigned int count;
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unsigned int size;
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u16 last_sof;
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u16 sof_offset;
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u8 last_scr[6];
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spinlock_t lock;
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} clock;
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};
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#define for_each_uvc_urb(uvc_urb, uvc_streaming) \
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for ((uvc_urb) = &(uvc_streaming)->uvc_urb[0]; \
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(uvc_urb) < &(uvc_streaming)->uvc_urb[UVC_URBS]; \
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++(uvc_urb))
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static inline u32 uvc_urb_index(const struct uvc_urb *uvc_urb)
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{
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return uvc_urb - &uvc_urb->stream->uvc_urb[0];
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}
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struct uvc_device_info {
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u32 quirks;
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u32 meta_format;
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u16 uvc_version;
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const struct uvc_control_mapping **mappings;
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};
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struct uvc_device {
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struct usb_device *udev;
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struct usb_interface *intf;
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unsigned long warnings;
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u32 quirks;
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int intfnum;
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char name[32];
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const struct uvc_device_info *info;
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struct mutex lock; /* Protects users */
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unsigned int users;
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|
atomic_t nmappings;
|
|
|
|
/* Video control interface */
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
struct media_device mdev;
|
|
#endif
|
|
struct v4l2_device vdev;
|
|
u16 uvc_version;
|
|
u32 clock_frequency;
|
|
|
|
struct list_head entities;
|
|
struct list_head chains;
|
|
|
|
/* Video Streaming interfaces */
|
|
struct list_head streams;
|
|
struct kref ref;
|
|
|
|
/* Status Interrupt Endpoint */
|
|
struct usb_host_endpoint *int_ep;
|
|
struct urb *int_urb;
|
|
bool flush_status;
|
|
u8 *status;
|
|
struct input_dev *input;
|
|
char input_phys[64];
|
|
|
|
struct uvc_ctrl_work {
|
|
struct work_struct work;
|
|
struct urb *urb;
|
|
struct uvc_video_chain *chain;
|
|
struct uvc_control *ctrl;
|
|
const void *data;
|
|
} async_ctrl;
|
|
|
|
struct uvc_entity *gpio_unit;
|
|
};
|
|
|
|
enum uvc_handle_state {
|
|
UVC_HANDLE_PASSIVE = 0,
|
|
UVC_HANDLE_ACTIVE = 1,
|
|
};
|
|
|
|
struct uvc_fh {
|
|
struct v4l2_fh vfh;
|
|
struct uvc_video_chain *chain;
|
|
struct uvc_streaming *stream;
|
|
enum uvc_handle_state state;
|
|
};
|
|
|
|
struct uvc_driver {
|
|
struct usb_driver driver;
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------
|
|
* Debugging, printing and logging
|
|
*/
|
|
|
|
#define UVC_DBG_PROBE (1 << 0)
|
|
#define UVC_DBG_DESCR (1 << 1)
|
|
#define UVC_DBG_CONTROL (1 << 2)
|
|
#define UVC_DBG_FORMAT (1 << 3)
|
|
#define UVC_DBG_CAPTURE (1 << 4)
|
|
#define UVC_DBG_CALLS (1 << 5)
|
|
#define UVC_DBG_FRAME (1 << 7)
|
|
#define UVC_DBG_SUSPEND (1 << 8)
|
|
#define UVC_DBG_STATUS (1 << 9)
|
|
#define UVC_DBG_VIDEO (1 << 10)
|
|
#define UVC_DBG_STATS (1 << 11)
|
|
#define UVC_DBG_CLOCK (1 << 12)
|
|
|
|
#define UVC_WARN_MINMAX 0
|
|
#define UVC_WARN_PROBE_DEF 1
|
|
#define UVC_WARN_XU_GET_RES 2
|
|
|
|
extern unsigned int uvc_clock_param;
|
|
extern unsigned int uvc_no_drop_param;
|
|
extern unsigned int uvc_dbg_param;
|
|
extern unsigned int uvc_timeout_param;
|
|
extern unsigned int uvc_hw_timestamps_param;
|
|
|
|
#define uvc_dbg(_dev, flag, fmt, ...) \
|
|
do { \
|
|
if (uvc_dbg_param & UVC_DBG_##flag) \
|
|
dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt, \
|
|
##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define uvc_dbg_cont(flag, fmt, ...) \
|
|
do { \
|
|
if (uvc_dbg_param & UVC_DBG_##flag) \
|
|
pr_cont(fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define uvc_warn_once(_dev, warn, fmt, ...) \
|
|
do { \
|
|
if (!test_and_set_bit(warn, &(_dev)->warnings)) \
|
|
dev_info(&(_dev)->udev->dev, fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
/* --------------------------------------------------------------------------
|
|
* Internal functions.
|
|
*/
|
|
|
|
/* Core driver */
|
|
extern struct uvc_driver uvc_driver;
|
|
|
|
struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
|
|
|
|
/* Video buffers queue management. */
|
|
int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
|
|
int drop_corrupted);
|
|
void uvc_queue_release(struct uvc_video_queue *queue);
|
|
int uvc_request_buffers(struct uvc_video_queue *queue,
|
|
struct v4l2_requestbuffers *rb);
|
|
int uvc_query_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
int uvc_create_buffers(struct uvc_video_queue *queue,
|
|
struct v4l2_create_buffers *v4l2_cb);
|
|
int uvc_queue_buffer(struct uvc_video_queue *queue,
|
|
struct media_device *mdev,
|
|
struct v4l2_buffer *v4l2_buf);
|
|
int uvc_export_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_exportbuffer *exp);
|
|
int uvc_dequeue_buffer(struct uvc_video_queue *queue,
|
|
struct v4l2_buffer *v4l2_buf, int nonblocking);
|
|
int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type);
|
|
int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type);
|
|
void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
|
|
struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
|
|
struct uvc_buffer *buf);
|
|
struct uvc_buffer *uvc_queue_get_current_buffer(struct uvc_video_queue *queue);
|
|
void uvc_queue_buffer_release(struct uvc_buffer *buf);
|
|
int uvc_queue_mmap(struct uvc_video_queue *queue,
|
|
struct vm_area_struct *vma);
|
|
__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
|
|
poll_table *wait);
|
|
#ifndef CONFIG_MMU
|
|
unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
|
|
unsigned long pgoff);
|
|
#endif
|
|
int uvc_queue_allocated(struct uvc_video_queue *queue);
|
|
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
|
|
{
|
|
return vb2_is_streaming(&queue->queue);
|
|
}
|
|
|
|
static inline struct uvc_streaming *
|
|
uvc_queue_to_stream(struct uvc_video_queue *queue)
|
|
{
|
|
return container_of(queue, struct uvc_streaming, queue);
|
|
}
|
|
|
|
/* V4L2 interface */
|
|
extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
|
|
extern const struct v4l2_file_operations uvc_fops;
|
|
|
|
/* Media controller */
|
|
int uvc_mc_register_entities(struct uvc_video_chain *chain);
|
|
void uvc_mc_cleanup_entity(struct uvc_entity *entity);
|
|
|
|
/* Video */
|
|
int uvc_video_init(struct uvc_streaming *stream);
|
|
int uvc_video_suspend(struct uvc_streaming *stream);
|
|
int uvc_video_resume(struct uvc_streaming *stream, int reset);
|
|
int uvc_video_start_streaming(struct uvc_streaming *stream);
|
|
void uvc_video_stop_streaming(struct uvc_streaming *stream);
|
|
int uvc_probe_video(struct uvc_streaming *stream,
|
|
struct uvc_streaming_control *probe);
|
|
int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
|
|
u8 intfnum, u8 cs, void *data, u16 size);
|
|
void uvc_video_clock_update(struct uvc_streaming *stream,
|
|
struct vb2_v4l2_buffer *vbuf,
|
|
struct uvc_buffer *buf);
|
|
int uvc_meta_register(struct uvc_streaming *stream);
|
|
|
|
int uvc_register_video_device(struct uvc_device *dev,
|
|
struct uvc_streaming *stream,
|
|
struct video_device *vdev,
|
|
struct uvc_video_queue *queue,
|
|
enum v4l2_buf_type type,
|
|
const struct v4l2_file_operations *fops,
|
|
const struct v4l2_ioctl_ops *ioctl_ops);
|
|
|
|
/* Status */
|
|
int uvc_status_init(struct uvc_device *dev);
|
|
void uvc_status_unregister(struct uvc_device *dev);
|
|
void uvc_status_cleanup(struct uvc_device *dev);
|
|
int uvc_status_start(struct uvc_device *dev, gfp_t flags);
|
|
void uvc_status_stop(struct uvc_device *dev);
|
|
|
|
/* Controls */
|
|
extern const struct uvc_control_mapping uvc_ctrl_power_line_mapping_limited;
|
|
extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops;
|
|
|
|
int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
|
|
struct v4l2_queryctrl *v4l2_ctrl);
|
|
int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
|
|
struct v4l2_querymenu *query_menu);
|
|
|
|
int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
|
|
const struct uvc_control_mapping *mapping);
|
|
int uvc_ctrl_init_device(struct uvc_device *dev);
|
|
void uvc_ctrl_cleanup_device(struct uvc_device *dev);
|
|
int uvc_ctrl_restore_values(struct uvc_device *dev);
|
|
bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,
|
|
struct uvc_control *ctrl, const u8 *data);
|
|
void uvc_ctrl_status_event(struct uvc_video_chain *chain,
|
|
struct uvc_control *ctrl, const u8 *data);
|
|
|
|
int uvc_ctrl_begin(struct uvc_video_chain *chain);
|
|
int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
|
|
struct v4l2_ext_controls *ctrls);
|
|
static inline int uvc_ctrl_commit(struct uvc_fh *handle,
|
|
struct v4l2_ext_controls *ctrls)
|
|
{
|
|
return __uvc_ctrl_commit(handle, 0, ctrls);
|
|
}
|
|
static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
|
|
{
|
|
return __uvc_ctrl_commit(handle, 1, NULL);
|
|
}
|
|
|
|
int uvc_ctrl_get(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl);
|
|
int uvc_ctrl_set(struct uvc_fh *handle, struct v4l2_ext_control *xctrl);
|
|
int uvc_ctrl_is_accessible(struct uvc_video_chain *chain, u32 v4l2_id,
|
|
const struct v4l2_ext_controls *ctrls,
|
|
unsigned long ioctl);
|
|
|
|
int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
|
|
struct uvc_xu_control_query *xqry);
|
|
|
|
/* Utility functions */
|
|
struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
|
|
u8 epaddr);
|
|
u16 uvc_endpoint_max_bpi(struct usb_device *dev, struct usb_host_endpoint *ep);
|
|
|
|
/* Quirks support */
|
|
void uvc_video_decode_isight(struct uvc_urb *uvc_urb,
|
|
struct uvc_buffer *buf,
|
|
struct uvc_buffer *meta_buf);
|
|
|
|
/* debugfs and statistics */
|
|
void uvc_debugfs_init(void);
|
|
void uvc_debugfs_cleanup(void);
|
|
void uvc_debugfs_init_stream(struct uvc_streaming *stream);
|
|
void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream);
|
|
|
|
size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf,
|
|
size_t size);
|
|
|
|
#endif
|