forked from luck/tmp_suning_uos_patched
usb: gadget: uvc: Add super-speed support to UVC webcam gadget
This patch adds super-speed support to UVC webcam gadget. Also in this patch: - We add the configurability to pass bInterval, bMaxBurst, mult factors for video streaming endpoint (ISOC IN) through module parameters. - We use config_ep_by_speed helper routine to configure video streaming endpoint. Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Bhupesh Sharma
Felipe Balbi
parent
5797663674
commit
fbcaba0e3d
@ -29,6 +29,25 @@
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unsigned int uvc_gadget_trace_param;
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/*-------------------------------------------------------------------------*/
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/* module parameters specific to the Video streaming endpoint */
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static unsigned streaming_interval = 1;
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module_param(streaming_interval, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(streaming_interval, "1 - 16");
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static unsigned streaming_maxpacket = 1024;
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module_param(streaming_maxpacket, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(streaming_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)");
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static unsigned streaming_mult;
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module_param(streaming_mult, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(streaming_mult, "0 - 2 (hs/ss only)");
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static unsigned streaming_maxburst;
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module_param(streaming_maxburst, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(streaming_maxburst, "0 - 15 (ss only)");
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/* --------------------------------------------------------------------------
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* Function descriptors
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*/
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@ -84,7 +103,7 @@ static struct usb_interface_descriptor uvc_control_intf __initdata = {
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.iInterface = 0,
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};
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static struct usb_endpoint_descriptor uvc_control_ep __initdata = {
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static struct usb_endpoint_descriptor uvc_fs_control_ep __initdata = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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@ -124,7 +143,7 @@ static struct usb_interface_descriptor uvc_streaming_intf_alt1 __initdata = {
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.iInterface = 0,
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};
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static struct usb_endpoint_descriptor uvc_streaming_ep = {
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static struct usb_endpoint_descriptor uvc_fs_streaming_ep = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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@ -133,15 +152,72 @@ static struct usb_endpoint_descriptor uvc_streaming_ep = {
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.bInterval = 1,
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};
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static struct usb_endpoint_descriptor uvc_hs_streaming_ep = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_ISOC,
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.wMaxPacketSize = cpu_to_le16(1024),
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.bInterval = 1,
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};
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/* super speed support */
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static struct usb_endpoint_descriptor uvc_ss_control_ep __initdata = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT),
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.bInterval = 8,
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};
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static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = {
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.bLength = sizeof uvc_ss_control_comp,
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.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
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/* the following 3 values can be tweaked if necessary */
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/* .bMaxBurst = 0, */
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/* .bmAttributes = 0, */
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.wBytesPerInterval = cpu_to_le16(STATUS_BYTECOUNT),
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};
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static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_ISOC,
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.wMaxPacketSize = cpu_to_le16(1024),
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.bInterval = 4,
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};
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static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp = {
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.bLength = sizeof uvc_ss_streaming_comp,
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.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
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/* the following 3 values can be tweaked if necessary */
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.bMaxBurst = 0,
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.bmAttributes = 0,
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.wBytesPerInterval = cpu_to_le16(1024),
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};
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static const struct usb_descriptor_header * const uvc_fs_streaming[] = {
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(struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
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(struct usb_descriptor_header *) &uvc_streaming_ep,
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(struct usb_descriptor_header *) &uvc_fs_streaming_ep,
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NULL,
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};
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static const struct usb_descriptor_header * const uvc_hs_streaming[] = {
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(struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
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(struct usb_descriptor_header *) &uvc_streaming_ep,
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(struct usb_descriptor_header *) &uvc_hs_streaming_ep,
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NULL,
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};
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static const struct usb_descriptor_header * const uvc_ss_streaming[] = {
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(struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
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(struct usb_descriptor_header *) &uvc_ss_streaming_ep,
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(struct usb_descriptor_header *) &uvc_ss_streaming_comp,
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NULL,
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};
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@ -217,6 +293,7 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt)
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struct uvc_device *uvc = to_uvc(f);
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struct v4l2_event v4l2_event;
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struct uvc_event *uvc_event = (void *)&v4l2_event.u.data;
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int ret;
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INFO(f->config->cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt);
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@ -264,7 +341,10 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt)
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return 0;
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if (uvc->video.ep) {
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uvc->video.ep->desc = &uvc_streaming_ep;
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ret = config_ep_by_speed(f->config->cdev->gadget,
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&(uvc->func), uvc->video.ep);
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if (ret)
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return ret;
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usb_ep_enable(uvc->video.ep);
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}
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@ -370,9 +450,11 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
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{
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struct uvc_input_header_descriptor *uvc_streaming_header;
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struct uvc_header_descriptor *uvc_control_header;
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const struct uvc_descriptor_header * const *uvc_control_desc;
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const struct uvc_descriptor_header * const *uvc_streaming_cls;
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const struct usb_descriptor_header * const *uvc_streaming_std;
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const struct usb_descriptor_header * const *src;
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static struct usb_endpoint_descriptor *uvc_control_ep;
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struct usb_descriptor_header **dst;
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struct usb_descriptor_header **hdr;
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unsigned int control_size;
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@ -381,10 +463,29 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
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unsigned int bytes;
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void *mem;
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uvc_streaming_cls = (speed == USB_SPEED_FULL)
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? uvc->desc.fs_streaming : uvc->desc.hs_streaming;
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uvc_streaming_std = (speed == USB_SPEED_FULL)
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? uvc_fs_streaming : uvc_hs_streaming;
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switch (speed) {
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case USB_SPEED_SUPER:
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uvc_control_desc = uvc->desc.ss_control;
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uvc_streaming_cls = uvc->desc.ss_streaming;
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uvc_streaming_std = uvc_ss_streaming;
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uvc_control_ep = &uvc_ss_control_ep;
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break;
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case USB_SPEED_HIGH:
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uvc_control_desc = uvc->desc.fs_control;
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uvc_streaming_cls = uvc->desc.hs_streaming;
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uvc_streaming_std = uvc_hs_streaming;
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uvc_control_ep = &uvc_fs_control_ep;
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break;
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case USB_SPEED_FULL:
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default:
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uvc_control_desc = uvc->desc.fs_control;
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uvc_streaming_cls = uvc->desc.fs_streaming;
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uvc_streaming_std = uvc_fs_streaming;
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uvc_control_ep = &uvc_fs_control_ep;
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break;
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}
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/* Descriptors layout
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*
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@ -402,16 +503,24 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
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control_size = 0;
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streaming_size = 0;
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bytes = uvc_iad.bLength + uvc_control_intf.bLength
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+ uvc_control_ep.bLength + uvc_control_cs_ep.bLength
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+ uvc_control_ep->bLength + uvc_control_cs_ep.bLength
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+ uvc_streaming_intf_alt0.bLength;
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n_desc = 5;
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for (src = (const struct usb_descriptor_header**)uvc->desc.control; *src; ++src) {
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if (speed == USB_SPEED_SUPER) {
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bytes += uvc_ss_control_comp.bLength;
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n_desc = 6;
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} else {
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n_desc = 5;
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}
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for (src = (const struct usb_descriptor_header **)uvc_control_desc;
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*src; ++src) {
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control_size += (*src)->bLength;
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bytes += (*src)->bLength;
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n_desc++;
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}
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for (src = (const struct usb_descriptor_header**)uvc_streaming_cls; *src; ++src) {
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for (src = (const struct usb_descriptor_header **)uvc_streaming_cls;
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*src; ++src) {
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streaming_size += (*src)->bLength;
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bytes += (*src)->bLength;
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n_desc++;
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@ -435,12 +544,15 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
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uvc_control_header = mem;
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UVC_COPY_DESCRIPTORS(mem, dst,
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(const struct usb_descriptor_header**)uvc->desc.control);
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(const struct usb_descriptor_header **)uvc_control_desc);
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uvc_control_header->wTotalLength = cpu_to_le16(control_size);
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uvc_control_header->bInCollection = 1;
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uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf;
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UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep);
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UVC_COPY_DESCRIPTOR(mem, dst, uvc_control_ep);
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if (speed == USB_SPEED_SUPER)
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UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_control_comp);
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UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_cs_ep);
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UVC_COPY_DESCRIPTOR(mem, dst, &uvc_streaming_intf_alt0);
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@ -448,7 +560,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
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UVC_COPY_DESCRIPTORS(mem, dst,
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(const struct usb_descriptor_header**)uvc_streaming_cls);
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uvc_streaming_header->wTotalLength = cpu_to_le16(streaming_size);
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uvc_streaming_header->bEndpointAddress = uvc_streaming_ep.bEndpointAddress;
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uvc_streaming_header->bEndpointAddress =
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uvc_fs_streaming_ep.bEndpointAddress;
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UVC_COPY_DESCRIPTORS(mem, dst, uvc_streaming_std);
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@ -484,6 +597,7 @@ uvc_function_unbind(struct usb_configuration *c, struct usb_function *f)
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kfree(f->descriptors);
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kfree(f->hs_descriptors);
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kfree(f->ss_descriptors);
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kfree(uvc);
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}
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@ -498,8 +612,26 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
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INFO(cdev, "uvc_function_bind\n");
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/* sanity check the streaming endpoint module parameters */
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if (streaming_interval < 1)
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streaming_interval = 1;
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if (streaming_interval > 16)
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streaming_interval = 16;
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if (streaming_mult > 2)
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streaming_mult = 2;
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if (streaming_maxburst > 15)
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streaming_maxburst = 15;
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/*
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* fill in the FS video streaming specific descriptors from the
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* module parameters
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*/
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uvc_fs_streaming_ep.wMaxPacketSize = streaming_maxpacket > 1023 ?
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1023 : streaming_maxpacket;
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uvc_fs_streaming_ep.bInterval = streaming_interval;
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/* Allocate endpoints. */
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ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);
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ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_control_ep);
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if (!ep) {
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INFO(cdev, "Unable to allocate control EP\n");
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goto error;
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@ -507,7 +639,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
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uvc->control_ep = ep;
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ep->driver_data = uvc;
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ep = usb_ep_autoconfig(cdev->gadget, &uvc_streaming_ep);
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ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep);
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if (!ep) {
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INFO(cdev, "Unable to allocate streaming EP\n");
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goto error;
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@ -528,9 +660,52 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
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uvc_streaming_intf_alt1.bInterfaceNumber = ret;
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uvc->streaming_intf = ret;
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/* Copy descriptors. */
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/* sanity check the streaming endpoint module parameters */
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if (streaming_maxpacket > 1024)
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streaming_maxpacket = 1024;
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/* Copy descriptors for FS. */
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f->descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL);
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f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH);
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/* support high speed hardware */
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if (gadget_is_dualspeed(cdev->gadget)) {
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/*
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* Fill in the HS descriptors from the module parameters for the
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* Video Streaming endpoint.
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* NOTE: We assume that the user knows what they are doing and
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* won't give parameters that their UDC doesn't support.
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*/
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uvc_hs_streaming_ep.wMaxPacketSize = streaming_maxpacket;
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uvc_hs_streaming_ep.wMaxPacketSize |= streaming_mult << 11;
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uvc_hs_streaming_ep.bInterval = streaming_interval;
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uvc_hs_streaming_ep.bEndpointAddress =
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uvc_fs_streaming_ep.bEndpointAddress;
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/* Copy descriptors. */
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f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH);
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}
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/* support super speed hardware */
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if (gadget_is_superspeed(c->cdev->gadget)) {
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/*
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* Fill in the SS descriptors from the module parameters for the
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* Video Streaming endpoint.
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* NOTE: We assume that the user knows what they are doing and
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* won't give parameters that their UDC doesn't support.
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*/
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uvc_ss_streaming_ep.wMaxPacketSize = streaming_maxpacket;
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uvc_ss_streaming_ep.bInterval = streaming_interval;
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uvc_ss_streaming_comp.bmAttributes = streaming_mult;
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uvc_ss_streaming_comp.bMaxBurst = streaming_maxburst;
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uvc_ss_streaming_comp.wBytesPerInterval =
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streaming_maxpacket * (streaming_mult + 1) *
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(streaming_maxburst + 1);
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uvc_ss_streaming_ep.bEndpointAddress =
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uvc_fs_streaming_ep.bEndpointAddress;
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/* Copy descriptors. */
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f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER);
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}
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/* Preallocate control endpoint request. */
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uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL);
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@ -585,9 +760,11 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
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*/
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int __init
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uvc_bind_config(struct usb_configuration *c,
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const struct uvc_descriptor_header * const *control,
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const struct uvc_descriptor_header * const *fs_control,
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const struct uvc_descriptor_header * const *ss_control,
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const struct uvc_descriptor_header * const *fs_streaming,
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const struct uvc_descriptor_header * const *hs_streaming)
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const struct uvc_descriptor_header * const *hs_streaming,
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const struct uvc_descriptor_header * const *ss_streaming)
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{
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struct uvc_device *uvc;
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int ret = 0;
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@ -605,21 +782,31 @@ uvc_bind_config(struct usb_configuration *c,
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uvc->state = UVC_STATE_DISCONNECTED;
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/* Validate the descriptors. */
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if (control == NULL || control[0] == NULL ||
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control[0]->bDescriptorSubType != UVC_VC_HEADER)
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if (fs_control == NULL || fs_control[0] == NULL ||
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fs_control[0]->bDescriptorSubType != UVC_VC_HEADER)
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goto error;
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if (ss_control == NULL || ss_control[0] == NULL ||
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ss_control[0]->bDescriptorSubType != UVC_VC_HEADER)
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goto error;
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if (fs_streaming == NULL || fs_streaming[0] == NULL ||
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fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
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fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
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goto error;
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if (hs_streaming == NULL || hs_streaming[0] == NULL ||
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hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
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hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
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goto error;
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uvc->desc.control = control;
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if (ss_streaming == NULL || ss_streaming[0] == NULL ||
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ss_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
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goto error;
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uvc->desc.fs_control = fs_control;
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uvc->desc.ss_control = ss_control;
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uvc->desc.fs_streaming = fs_streaming;
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uvc->desc.hs_streaming = hs_streaming;
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uvc->desc.ss_streaming = ss_streaming;
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/* maybe allocate device-global string IDs, and patch descriptors */
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if (uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id == 0) {
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@ -17,9 +17,11 @@
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#include <linux/usb/video.h>
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extern int uvc_bind_config(struct usb_configuration *c,
|
||||
const struct uvc_descriptor_header * const *control,
|
||||
const struct uvc_descriptor_header * const *fs_streaming,
|
||||
const struct uvc_descriptor_header * const *hs_streaming);
|
||||
const struct uvc_descriptor_header * const *fs_control,
|
||||
const struct uvc_descriptor_header * const *hs_control,
|
||||
const struct uvc_descriptor_header * const *fs_streaming,
|
||||
const struct uvc_descriptor_header * const *hs_streaming,
|
||||
const struct uvc_descriptor_header * const *ss_streaming);
|
||||
|
||||
#endif /* _F_UVC_H_ */
|
||||
|
||||
|
||||
@ -153,9 +153,11 @@ struct uvc_device
|
||||
|
||||
/* Descriptors */
|
||||
struct {
|
||||
const struct uvc_descriptor_header * const *control;
|
||||
const struct uvc_descriptor_header * const *fs_control;
|
||||
const struct uvc_descriptor_header * const *ss_control;
|
||||
const struct uvc_descriptor_header * const *fs_streaming;
|
||||
const struct uvc_descriptor_header * const *hs_streaming;
|
||||
const struct uvc_descriptor_header * const *ss_streaming;
|
||||
} desc;
|
||||
|
||||
unsigned int control_intf;
|
||||
|
||||
@ -272,7 +272,15 @@ static const struct uvc_color_matching_descriptor uvc_color_matching = {
|
||||
.bMatrixCoefficients = 4,
|
||||
};
|
||||
|
||||
static const struct uvc_descriptor_header * const uvc_control_cls[] = {
|
||||
static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = {
|
||||
(const struct uvc_descriptor_header *) &uvc_control_header,
|
||||
(const struct uvc_descriptor_header *) &uvc_camera_terminal,
|
||||
(const struct uvc_descriptor_header *) &uvc_processing,
|
||||
(const struct uvc_descriptor_header *) &uvc_output_terminal,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = {
|
||||
(const struct uvc_descriptor_header *) &uvc_control_header,
|
||||
(const struct uvc_descriptor_header *) &uvc_camera_terminal,
|
||||
(const struct uvc_descriptor_header *) &uvc_processing,
|
||||
@ -304,6 +312,18 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = {
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = {
|
||||
(const struct uvc_descriptor_header *) &uvc_input_header,
|
||||
(const struct uvc_descriptor_header *) &uvc_format_yuv,
|
||||
(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
|
||||
(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
|
||||
(const struct uvc_descriptor_header *) &uvc_format_mjpg,
|
||||
(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
|
||||
(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
|
||||
(const struct uvc_descriptor_header *) &uvc_color_matching,
|
||||
NULL,
|
||||
};
|
||||
|
||||
/* --------------------------------------------------------------------------
|
||||
* USB configuration
|
||||
*/
|
||||
@ -311,8 +331,9 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = {
|
||||
static int __init
|
||||
webcam_config_bind(struct usb_configuration *c)
|
||||
{
|
||||
return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls,
|
||||
uvc_hs_streaming_cls);
|
||||
return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls,
|
||||
uvc_fs_streaming_cls, uvc_hs_streaming_cls,
|
||||
uvc_ss_streaming_cls);
|
||||
}
|
||||
|
||||
static struct usb_configuration webcam_config_driver = {
|
||||
@ -373,7 +394,7 @@ static struct usb_composite_driver webcam_driver = {
|
||||
.name = "g_webcam",
|
||||
.dev = &webcam_device_descriptor,
|
||||
.strings = webcam_device_strings,
|
||||
.max_speed = USB_SPEED_HIGH,
|
||||
.max_speed = USB_SPEED_SUPER,
|
||||
.unbind = webcam_unbind,
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user