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authorGustavo Padovan <gustavo.padovan@collabora.co.uk>2012-07-11 02:10:06 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-07-17 04:43:04 +0400
commitd81a5d1956731c453b85c141458d4ff5d6cc5366 (patch)
tree528644bc7138ce2c00e4075d9caf4f575f8d92e9
parent925aa46ba963a4da6d8ee6ab1d04a02ffa8db62b (diff)
downloadlinux-d81a5d1956731c453b85c141458d4ff5d6cc5366.tar.xz
USB: add USB_VENDOR_AND_INTERFACE_INFO() macro
A lot of Broadcom Bluetooth devices provides vendor specific interface class and we are getting flooded by patches adding new device support. This change will help us enable support for any other Broadcom with vendor specific device that arrives in the future. Only the product id changes for those devices, so this macro would be perfect for us: { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) } Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Henrik Rydberg <rydberg@bitmath.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--include/linux/usb.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 873956bec25e..30d1ae38eab1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -861,6 +861,27 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
+/**
+ * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific vendor with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_VENDOR, \
+ .idVendor = (vend), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
/* ----------------------------------------------------------------------- */
/* Stuff for dynamic usb ids */