usb: gadget: uvc: configfs support in uvc function
Add support for using the uvc function as a component of USB gadgets composed with configfs. Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz
Felipe Balbi
parent
6c25955ed6
commit
46919a23ee
|
|
@ -0,0 +1,265 @@
|
|||
What: /config/usb-gadget/gadget/functions/uvc.name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: UVC function directory
|
||||
|
||||
streaming_maxburst - 0..15 (ss only)
|
||||
streaming_maxpacket - 1..1023 (fs), 1..3072 (hs/ss)
|
||||
streaming_interval - 1..16
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Control descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/class
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/class/ss
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Super speed control class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/class/fs
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Full speed control class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Terminal descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Output terminal descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output/default
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Default output terminal descriptors
|
||||
|
||||
All attributes read only:
|
||||
iTerminal - index of string descriptor
|
||||
bSourceID - id of the terminal to which this terminal
|
||||
is connected
|
||||
bAssocTerminal - id of the input terminal to which this output
|
||||
terminal is associated
|
||||
wTerminalType - terminal type
|
||||
bTerminalID - a non-zero id of this terminal
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Camera terminal descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera/default
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Default camera terminal descriptors
|
||||
|
||||
All attributes read only:
|
||||
bmControls - bitmap specifying which controls are
|
||||
supported for the video stream
|
||||
wOcularFocalLength - the value of Locular
|
||||
wObjectiveFocalLengthMax- the value of Lmin
|
||||
wObjectiveFocalLengthMin- the value of Lmax
|
||||
iTerminal - index of string descriptor
|
||||
bAssocTerminal - id of the output terminal to which
|
||||
this terminal is connected
|
||||
wTerminalType - terminal type
|
||||
bTerminalID - a non-zero id of this terminal
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/processing
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Processing unit descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/processing/default
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Default processing unit descriptors
|
||||
|
||||
All attributes read only:
|
||||
iProcessing - index of string descriptor
|
||||
bmControls - bitmap specifying which controls are
|
||||
supported for the video stream
|
||||
wMaxMultiplier - maximum digital magnification x100
|
||||
bSourceID - id of the terminal to which this unit is
|
||||
connected
|
||||
bUnitID - a non-zero id of this unit
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/header
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Control header descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/control/header/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific control header descriptors
|
||||
|
||||
dwClockFrequency
|
||||
bcdUVC
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Streaming descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Streaming class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/ss
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Super speed streaming class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/hs
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: High speed streaming class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/fs
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Full speed streaming class descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Color matching descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/default
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Default color matching descriptors
|
||||
|
||||
All attributes read only:
|
||||
bMatrixCoefficients - matrix used to compute luma and
|
||||
chroma values from the color primaries
|
||||
bTransferCharacteristics- optoelectronic transfer
|
||||
characteristic of the source picutre,
|
||||
also called the gamma function
|
||||
bColorPrimaries - color primaries and the reference
|
||||
white
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: MJPEG format descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific MJPEG format descriptors
|
||||
|
||||
All attributes read only,
|
||||
except bmaControls and bDefaultFrameIndex:
|
||||
bmaControls - this format's data for bmaControls in
|
||||
the streaming header
|
||||
bmInterfaceFlags - specifies interlace information,
|
||||
read-only
|
||||
bAspectRatioY - the X dimension of the picture aspect
|
||||
ratio, read-only
|
||||
bAspectRatioX - the Y dimension of the picture aspect
|
||||
ratio, read-only
|
||||
bmFlags - characteristics of this format,
|
||||
read-only
|
||||
bDefaultFrameIndex - optimum frame index for this stream
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific MJPEG frame descriptors
|
||||
|
||||
dwFrameInterval - indicates how frame interval can be
|
||||
programmed; a number of values
|
||||
separated by newline can be specified
|
||||
dwDefaultFrameInterval - the frame interval the device would
|
||||
like to use as default
|
||||
dwMaxVideoFrameBufferSize- the maximum number of bytes the
|
||||
compressor will produce for a video
|
||||
frame or still image
|
||||
dwMaxBitRate - the maximum bit rate at the shortest
|
||||
frame interval in bps
|
||||
dwMinBitRate - the minimum bit rate at the longest
|
||||
frame interval in bps
|
||||
wHeight - height of decoded bitmap frame in px
|
||||
wWidth - width of decoded bitmam frame in px
|
||||
bmCapabilities - still image support, fixed frame-rate
|
||||
support
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Uncompressed format descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific uncompressed format descriptors
|
||||
|
||||
bmaControls - this format's data for bmaControls in
|
||||
the streaming header
|
||||
bmInterfaceFlags - specifies interlace information,
|
||||
read-only
|
||||
bAspectRatioY - the X dimension of the picture aspect
|
||||
ratio, read-only
|
||||
bAspectRatioX - the Y dimension of the picture aspect
|
||||
ratio, read-only
|
||||
bDefaultFrameIndex - optimum frame index for this stream
|
||||
bBitsPerPixel - number of bits per pixel used to
|
||||
specify color in the decoded video
|
||||
frame
|
||||
guidFormat - globally unique id used to identify
|
||||
stream-encoding format
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific uncompressed frame descriptors
|
||||
|
||||
dwFrameInterval - indicates how frame interval can be
|
||||
programmed; a number of values
|
||||
separated by newline can be specified
|
||||
dwDefaultFrameInterval - the frame interval the device would
|
||||
like to use as default
|
||||
dwMaxVideoFrameBufferSize- the maximum number of bytes the
|
||||
compressor will produce for a video
|
||||
frame or still image
|
||||
dwMaxBitRate - the maximum bit rate at the shortest
|
||||
frame interval in bps
|
||||
dwMinBitRate - the minimum bit rate at the longest
|
||||
frame interval in bps
|
||||
wHeight - height of decoded bitmap frame in px
|
||||
wWidth - width of decoded bitmam frame in px
|
||||
bmCapabilities - still image support, fixed frame-rate
|
||||
support
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Streaming header descriptors
|
||||
|
||||
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header/name
|
||||
Date: Dec 2014
|
||||
KernelVersion: 3.20
|
||||
Description: Specific streaming header descriptors
|
||||
|
||||
All attributes read only:
|
||||
bTriggerUsage - how the host software will respond to
|
||||
a hardware trigger interrupt event
|
||||
bTriggerSupport - flag specifying if hardware
|
||||
triggering is supported
|
||||
bStillCaptureMethod - method of still image caputre
|
||||
supported
|
||||
bTerminalLink - id of the output terminal to which
|
||||
the video endpoint of this interface
|
||||
is connected
|
||||
bmInfo - capabilities of this video streaming
|
||||
interface
|
||||
|
|
@ -423,6 +423,17 @@ config USB_CONFIGFS_F_HID
|
|||
|
||||
For more information, see Documentation/usb/gadget_hid.txt.
|
||||
|
||||
config USB_CONFIGFS_F_UVC
|
||||
boolean "USB Webcam function"
|
||||
depends on USB_CONFIGFS
|
||||
depends on VIDEO_DEV
|
||||
select VIDEOBUF2_VMALLOC
|
||||
select USB_F_UVC
|
||||
help
|
||||
The Webcam function acts as a composite USB Audio and Video Class
|
||||
device. It provides a userspace API to process UVC control requests
|
||||
and stream video data to the host.
|
||||
|
||||
source "drivers/usb/gadget/legacy/Kconfig"
|
||||
|
||||
endchoice
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ usb_f_uac1-y := f_uac1.o u_uac1.o
|
|||
obj-$(CONFIG_USB_F_UAC1) += usb_f_uac1.o
|
||||
usb_f_uac2-y := f_uac2.o
|
||||
obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o
|
||||
usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o
|
||||
usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o
|
||||
obj-$(CONFIG_USB_F_UVC) += usb_f_uvc.o
|
||||
usb_f_midi-y := f_midi.o
|
||||
obj-$(CONFIG_USB_F_MIDI) += usb_f_midi.o
|
||||
|
|
|
|||
|
|
@ -27,10 +27,11 @@
|
|||
#include <media/v4l2-dev.h>
|
||||
#include <media/v4l2-event.h>
|
||||
|
||||
#include "u_uvc.h"
|
||||
#include "uvc.h"
|
||||
#include "uvc_configfs.h"
|
||||
#include "uvc_v4l2.h"
|
||||
#include "uvc_video.h"
|
||||
#include "u_uvc.h"
|
||||
|
||||
unsigned int uvc_gadget_trace_param;
|
||||
|
||||
|
|
@ -788,25 +789,104 @@ static void uvc_free_inst(struct usb_function_instance *f)
|
|||
{
|
||||
struct f_uvc_opts *opts = fi_to_f_uvc_opts(f);
|
||||
|
||||
mutex_destroy(&opts->lock);
|
||||
kfree(opts);
|
||||
}
|
||||
|
||||
static struct usb_function_instance *uvc_alloc_inst(void)
|
||||
{
|
||||
struct f_uvc_opts *opts;
|
||||
struct uvc_camera_terminal_descriptor *cd;
|
||||
struct uvc_processing_unit_descriptor *pd;
|
||||
struct uvc_output_terminal_descriptor *od;
|
||||
struct uvc_color_matching_descriptor *md;
|
||||
struct uvc_descriptor_header **ctl_cls;
|
||||
|
||||
opts = kzalloc(sizeof(*opts), GFP_KERNEL);
|
||||
if (!opts)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
opts->func_inst.free_func_inst = uvc_free_inst;
|
||||
mutex_init(&opts->lock);
|
||||
|
||||
cd = &opts->uvc_camera_terminal;
|
||||
cd->bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3);
|
||||
cd->bDescriptorType = USB_DT_CS_INTERFACE;
|
||||
cd->bDescriptorSubType = UVC_VC_INPUT_TERMINAL;
|
||||
cd->bTerminalID = 1;
|
||||
cd->wTerminalType = cpu_to_le16(0x0201);
|
||||
cd->bAssocTerminal = 0;
|
||||
cd->iTerminal = 0;
|
||||
cd->wObjectiveFocalLengthMin = cpu_to_le16(0);
|
||||
cd->wObjectiveFocalLengthMax = cpu_to_le16(0);
|
||||
cd->wOcularFocalLength = cpu_to_le16(0);
|
||||
cd->bControlSize = 3;
|
||||
cd->bmControls[0] = 2;
|
||||
cd->bmControls[1] = 0;
|
||||
cd->bmControls[2] = 0;
|
||||
|
||||
pd = &opts->uvc_processing;
|
||||
pd->bLength = UVC_DT_PROCESSING_UNIT_SIZE(2);
|
||||
pd->bDescriptorType = USB_DT_CS_INTERFACE;
|
||||
pd->bDescriptorSubType = UVC_VC_PROCESSING_UNIT;
|
||||
pd->bUnitID = 2;
|
||||
pd->bSourceID = 1;
|
||||
pd->wMaxMultiplier = cpu_to_le16(16*1024);
|
||||
pd->bControlSize = 2;
|
||||
pd->bmControls[0] = 1;
|
||||
pd->bmControls[1] = 0;
|
||||
pd->iProcessing = 0;
|
||||
|
||||
od = &opts->uvc_output_terminal;
|
||||
od->bLength = UVC_DT_OUTPUT_TERMINAL_SIZE;
|
||||
od->bDescriptorType = USB_DT_CS_INTERFACE;
|
||||
od->bDescriptorSubType = UVC_VC_OUTPUT_TERMINAL;
|
||||
od->bTerminalID = 3;
|
||||
od->wTerminalType = cpu_to_le16(0x0101);
|
||||
od->bAssocTerminal = 0;
|
||||
od->bSourceID = 2;
|
||||
od->iTerminal = 0;
|
||||
|
||||
md = &opts->uvc_color_matching;
|
||||
md->bLength = UVC_DT_COLOR_MATCHING_SIZE;
|
||||
md->bDescriptorType = USB_DT_CS_INTERFACE;
|
||||
md->bDescriptorSubType = UVC_VS_COLORFORMAT;
|
||||
md->bColorPrimaries = 1;
|
||||
md->bTransferCharacteristics = 1;
|
||||
md->bMatrixCoefficients = 4;
|
||||
|
||||
/* Prepare fs control class descriptors for configfs-based gadgets */
|
||||
ctl_cls = opts->uvc_fs_control_cls;
|
||||
ctl_cls[0] = NULL; /* assigned elsewhere by configfs */
|
||||
ctl_cls[1] = (struct uvc_descriptor_header *)cd;
|
||||
ctl_cls[2] = (struct uvc_descriptor_header *)pd;
|
||||
ctl_cls[3] = (struct uvc_descriptor_header *)od;
|
||||
ctl_cls[4] = NULL; /* NULL-terminate */
|
||||
opts->fs_control =
|
||||
(const struct uvc_descriptor_header * const *)ctl_cls;
|
||||
|
||||
/* Prepare hs control class descriptors for configfs-based gadgets */
|
||||
ctl_cls = opts->uvc_ss_control_cls;
|
||||
ctl_cls[0] = NULL; /* assigned elsewhere by configfs */
|
||||
ctl_cls[1] = (struct uvc_descriptor_header *)cd;
|
||||
ctl_cls[2] = (struct uvc_descriptor_header *)pd;
|
||||
ctl_cls[3] = (struct uvc_descriptor_header *)od;
|
||||
ctl_cls[4] = NULL; /* NULL-terminate */
|
||||
opts->ss_control =
|
||||
(const struct uvc_descriptor_header * const *)ctl_cls;
|
||||
|
||||
opts->streaming_interval = 1;
|
||||
opts->streaming_maxpacket = 1024;
|
||||
|
||||
uvcg_attach_configfs(opts);
|
||||
return &opts->func_inst;
|
||||
}
|
||||
|
||||
static void uvc_free(struct usb_function *f)
|
||||
{
|
||||
struct uvc_device *uvc = to_uvc(f);
|
||||
|
||||
struct f_uvc_opts *opts = container_of(f->fi, struct f_uvc_opts,
|
||||
func_inst);
|
||||
--opts->refcnt;
|
||||
kfree(uvc);
|
||||
}
|
||||
|
||||
|
|
@ -832,6 +912,7 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi)
|
|||
{
|
||||
struct uvc_device *uvc;
|
||||
struct f_uvc_opts *opts;
|
||||
struct uvc_descriptor_header **strm_cls;
|
||||
|
||||
uvc = kzalloc(sizeof(*uvc), GFP_KERNEL);
|
||||
if (uvc == NULL)
|
||||
|
|
@ -840,11 +921,30 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi)
|
|||
uvc->state = UVC_STATE_DISCONNECTED;
|
||||
opts = fi_to_f_uvc_opts(fi);
|
||||
|
||||
mutex_lock(&opts->lock);
|
||||
if (opts->uvc_fs_streaming_cls) {
|
||||
strm_cls = opts->uvc_fs_streaming_cls;
|
||||
opts->fs_streaming =
|
||||
(const struct uvc_descriptor_header * const *)strm_cls;
|
||||
}
|
||||
if (opts->uvc_hs_streaming_cls) {
|
||||
strm_cls = opts->uvc_hs_streaming_cls;
|
||||
opts->hs_streaming =
|
||||
(const struct uvc_descriptor_header * const *)strm_cls;
|
||||
}
|
||||
if (opts->uvc_ss_streaming_cls) {
|
||||
strm_cls = opts->uvc_ss_streaming_cls;
|
||||
opts->ss_streaming =
|
||||
(const struct uvc_descriptor_header * const *)strm_cls;
|
||||
}
|
||||
|
||||
uvc->desc.fs_control = opts->fs_control;
|
||||
uvc->desc.ss_control = opts->ss_control;
|
||||
uvc->desc.fs_streaming = opts->fs_streaming;
|
||||
uvc->desc.hs_streaming = opts->hs_streaming;
|
||||
uvc->desc.ss_streaming = opts->ss_streaming;
|
||||
++opts->refcnt;
|
||||
mutex_unlock(&opts->lock);
|
||||
|
||||
/* Register the function. */
|
||||
uvc->func.name = "uvc";
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@
|
|||
#define U_UVC_H
|
||||
|
||||
#include <linux/usb/composite.h>
|
||||
#include <linux/usb/video.h>
|
||||
|
||||
#define fi_to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst)
|
||||
|
||||
|
|
@ -26,11 +27,60 @@ struct f_uvc_opts {
|
|||
unsigned int streaming_interval;
|
||||
unsigned int streaming_maxpacket;
|
||||
unsigned int streaming_maxburst;
|
||||
|
||||
/*
|
||||
* Control descriptors array pointers for full-/high-speed and
|
||||
* super-speed. They point by default to the uvc_fs_control_cls and
|
||||
* uvc_ss_control_cls arrays respectively. Legacy gadgets must
|
||||
* override them in their gadget bind callback.
|
||||
*/
|
||||
const struct uvc_descriptor_header * const *fs_control;
|
||||
const struct uvc_descriptor_header * const *ss_control;
|
||||
|
||||
/*
|
||||
* Streaming descriptors array pointers for full-speed, high-speed and
|
||||
* super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays
|
||||
* for configfs-based gadgets. Legacy gadgets must initialize them in
|
||||
* their gadget bind callback.
|
||||
*/
|
||||
const struct uvc_descriptor_header * const *fs_streaming;
|
||||
const struct uvc_descriptor_header * const *hs_streaming;
|
||||
const struct uvc_descriptor_header * const *ss_streaming;
|
||||
|
||||
/* Default control descriptors for configfs-based gadgets. */
|
||||
struct uvc_camera_terminal_descriptor uvc_camera_terminal;
|
||||
struct uvc_processing_unit_descriptor uvc_processing;
|
||||
struct uvc_output_terminal_descriptor uvc_output_terminal;
|
||||
struct uvc_color_matching_descriptor uvc_color_matching;
|
||||
|
||||
/*
|
||||
* Control descriptors pointers arrays for full-/high-speed and
|
||||
* super-speed. The first element is a configurable control header
|
||||
* descriptor, the other elements point to the fixed default control
|
||||
* descriptors. Used by configfs only, must not be touched by legacy
|
||||
* gadgets.
|
||||
*/
|
||||
struct uvc_descriptor_header *uvc_fs_control_cls[5];
|
||||
struct uvc_descriptor_header *uvc_ss_control_cls[5];
|
||||
|
||||
/*
|
||||
* Streaming descriptors for full-speed, high-speed and super-speed.
|
||||
* Used by configfs only, must not be touched by legacy gadgets. The
|
||||
* arrays are allocated at runtime as the number of descriptors isn't
|
||||
* known in advance.
|
||||
*/
|
||||
struct uvc_descriptor_header **uvc_fs_streaming_cls;
|
||||
struct uvc_descriptor_header **uvc_hs_streaming_cls;
|
||||
struct uvc_descriptor_header **uvc_ss_streaming_cls;
|
||||
|
||||
/*
|
||||
* Read/write access to configfs attributes is handled by configfs.
|
||||
*
|
||||
* This lock protects the descriptors from concurrent access by
|
||||
* read/write and symlink creation/removal.
|
||||
*/
|
||||
struct mutex lock;
|
||||
int refcnt;
|
||||
};
|
||||
|
||||
void uvc_set_trace_param(unsigned int trace);
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,22 @@
|
|||
/*
|
||||
* uvc_configfs.h
|
||||
*
|
||||
* Configfs support for the uvc function.
|
||||
*
|
||||
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
|
||||
* http://www.samsung.com
|
||||
*
|
||||
* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#ifndef UVC_CONFIGFS_H
|
||||
#define UVC_CONFIGFS_H
|
||||
|
||||
struct f_uvc_opts;
|
||||
|
||||
int uvcg_attach_configfs(struct f_uvc_opts *opts);
|
||||
|
||||
#endif /* UVC_CONFIGFS_H */
|
||||
Loading…
Reference in New Issue