DECLARE_UVC_HEADER_DESCRIPTOR(1);
static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = {
.bLength = UVC_DT_HEADER_SIZE(1),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubType = UVC_VC_HEADER,
.bcdUVC = cpu_to_le16(0x0100),
.wTotalLength = 0, /* dynamic */
.dwClockFrequency = cpu_to_le32(48000000),
.bInCollection = 0, /* dynamic */
.baInterfaceNr[0] = 0, /* dynamic */
};
static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = {
.bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubType = UVC_VC_INPUT_TERMINAL,
.bTerminalID = 1,
.wTerminalType = cpu_to_le16(0x0201),
.bAssocTerminal = 0,
.iTerminal = 0,
.wObjectiveFocalLengthMin = cpu_to_le16(0),
.wObjectiveFocalLengthMax = cpu_to_le16(0),
.wOcularFocalLength = cpu_to_le16(0),
.bControlSize = 3,
.bmControls[0] = 2,
.bmControls[1] = 0,
.bmControls[2] = 0,
};
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;
}
