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authorMathias Nyman <mathias.nyman@linux.intel.com>2016-02-12 17:40:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-15 04:03:23 +0300
commitb37d83a6a41499d582b8faedff1913ec75d9e70b (patch)
treed41550d8ace906159e0af51465f222e1be6afe7f /include/linux/usb.h
parentc8b1d8977eee3acc63a65811dd72ec4a93b74388 (diff)
downloadlinux-b37d83a6a41499d582b8faedff1913ec75d9e70b.tar.xz
usb: Parse the new USB 3.1 SuperSpeedPlus Isoc endpoint companion descriptor
USB 3.1 devices can return a new SuperSpeedPlus isoc endpoint companion descriptor for a isochronous endpoint that requires more than 48K bytes per Service Interval. The new descriptor immediately follows the old USB 3.0 SuperSpeed Endpoint Companion and will provide a new BytesPerInterval value. It is parsed and stored in struct usb_host_endpoint with the other endpoint related descriptors, and should be used by USB3.1 capable hosts to reserve bus time in the schedule. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index dc0ea0de8a81..8fc881af8735 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -50,6 +50,7 @@ struct ep_device;
* struct usb_host_endpoint - host-side endpoint descriptor and queue
* @desc: descriptor for this endpoint, wMaxPacketSize in native byteorder
* @ss_ep_comp: SuperSpeed companion descriptor for this endpoint
+ * @ssp_isoc_ep_comp: SuperSpeedPlus isoc companion descriptor for this endpoint
* @urb_list: urbs queued to this endpoint; maintained by usbcore
* @hcpriv: for use by HCD; typically holds hardware dma queue head (QH)
* with one or more transfer descriptors (TDs) per urb
@@ -65,6 +66,7 @@ struct ep_device;
struct usb_host_endpoint {
struct usb_endpoint_descriptor desc;
struct usb_ss_ep_comp_descriptor ss_ep_comp;
+ struct usb_ssp_isoc_ep_comp_descriptor ssp_isoc_ep_comp;
struct list_head urb_list;
void *hcpriv;
struct ep_device *ep_dev; /* For sysfs info */