usbcore: get BOS descriptor set

This commit gets BOS(Binary Device Object Store) descriptor set for Super
Speed devices and High Speed devices which support BOS descriptor.

BOS descriptor is used to report additional USB device-level capabilities
that are not reported via the Device descriptor. By getting BOS descriptor
set, driver can check device's device-level capability such as LPM
capability.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index c19f9100c307..90ab9dc1f080 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -292,6 +292,16 @@ struct usb_host_config {
         int extralen;
 };
 
+/* USB2.0 and USB3.0 device BOS descriptor set */
+struct usb_host_bos {
+        struct usb_bos_descriptor       *desc;
+
+        /* wireless cap descriptor is handled by wusb */
+        struct usb_ext_cap_descriptor   *ext_cap;
+        struct usb_ss_cap_descriptor    *ss_cap;
+        struct usb_ss_container_id_descriptor   *ss_id;
+};
+
 int __usb_get_extra_descriptor(char *buffer, unsigned size,
         unsigned char type, void **ptr);
 #define usb_get_extra_descriptor(ifpoint, type, ptr) \
@@ -381,6 +391,7 @@ struct usb_tt;
  * @ep0: endpoint 0 data (default control pipe)
  * @dev: generic device interface
  * @descriptor: USB device descriptor
+ * @bos: USB device BOS descriptor set
  * @config: all of the device's configs
  * @actconfig: the active configuration
  * @ep_in: array of IN endpoints
@@ -442,6 +453,7 @@ struct usb_device {
         struct device dev;
 
         struct usb_device_descriptor descriptor;
+        struct usb_host_bos *bos;
         struct usb_host_config *config;
 
         struct usb_host_config *actconfig;