Merge "usb: core: Add support to handle multi config audio device"

1 files changed, 23 insertions, 0 deletions

diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index 779a62aafafe..d3ab3f57aa9f 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -894,6 +894,29 @@ struct usb_ssp_cap_descriptor {
 #define USB_SSP_SUBLINK_SPEED_LSM	(0xff << 16)	/* Lanespeed mantissa */
 } __attribute__((packed));
 
+/*
+ * Configuration Summary descriptors: Defines a list of functions in the
+ * configuration. This descriptor may be used by Host software to decide
+ * which Configuration to use to obtain the desired functionality.
+ */
+#define	USB_CAP_TYPE_CONFIG_SUMMARY	0x10
+
+struct function_class_info {
+	__u8 bClass;
+	__u8 bSubClass;
+	__u8 bProtocol;
+};
+
+struct usb_config_summary_descriptor {
+	__u8 bLength;
+	__u8 bDescriptorType;
+	__u8 bDevCapabilityType;
+	__u16 bcdVersion;
+	__u8 bConfigurationValue;
+	__u8 bMaxPower;
+	__u8 bNumFunctions;
+	struct function_class_info cs_info[];
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/