@@ -478,6 +478,25 @@ uvc_register_video(struct uvc_device *uvc)
} \
} while (0)
+#define UVC_COPY_XU_DESCRIPTOR(mem, dst, desc) \
+ do { \
+ *(dst)++ = mem; \
+ memcpy(mem, desc, 22); /* bLength to bNrInPins */ \
+ mem += 22; \
+ \
+ memcpy(mem, (desc)->baSourceID, (desc)->bNrInPins); \
+ mem += (desc)->bNrInPins; \
+ \
+ memcpy(mem, &(desc)->bControlSize, 1); \
+ mem++; \
+ \
+ memcpy(mem, (desc)->bmControls, (desc)->bControlSize); \
+ mem += (desc)->bControlSize; \
+ \
+ memcpy(mem, &(desc)->iExtension, 1); \
+ mem++; \
+ } while (0)
+
static struct usb_descriptor_header **
uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
{
@@ -489,6 +508,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
const struct usb_descriptor_header * const *src;
struct usb_descriptor_header **dst;
struct usb_descriptor_header **hdr;
+ struct uvcg_extension *xu;
unsigned int control_size;
unsigned int streaming_size;
unsigned int n_desc;
@@ -556,6 +576,13 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
bytes += (*src)->bLength;
n_desc++;
}
+
+ list_for_each_entry(xu, uvc->desc.extension_units, list) {
+ control_size += xu->desc.bLength;
+ bytes += xu->desc.bLength;
+ n_desc++;
+ }
+
for (src = (const struct usb_descriptor_header **)uvc_streaming_cls;
*src; ++src) {
streaming_size += (*src)->bLength;
@@ -582,6 +609,10 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
uvc_control_header = mem;
UVC_COPY_DESCRIPTORS(mem, dst,
(const struct usb_descriptor_header **)uvc_control_desc);
+
+ list_for_each_entry(xu, uvc->desc.extension_units, list)
+ UVC_COPY_XU_DESCRIPTOR(mem, dst, &xu->desc);
+
uvc_control_header->wTotalLength = cpu_to_le16(control_size);
uvc_control_header->bInCollection = 1;
uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf;
@@ -1025,6 +1056,8 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi)
return ERR_PTR(-EBUSY);
}
+ uvc->desc.extension_units = &opts->extension_units;
+
++opts->refcnt;
mutex_unlock(&opts->lock);
@@ -143,6 +143,7 @@ struct uvc_device {
const struct uvc_descriptor_header * const *fs_streaming;
const struct uvc_descriptor_header * const *hs_streaming;
const struct uvc_descriptor_header * const *ss_streaming;
+ struct list_head *extension_units;
} desc;
unsigned int control_intf;