X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fxhci.h;h=85e65647d44518cf3c3bbf0873816b344b90cf53;hb=0b9466ccea3c4ec363737288dd9467bf978c9c2d;hp=93d3bf4d213c76dbacc8d964f72bda2a4c2c32c5;hpb=f1ebdd60cc73ed36fd977f7e719ce70d2f5cd1c0;p=karo-tx-linux.git

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 93d3bf4d213c..85e65647d445 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -621,6 +621,11 @@ struct xhci_ep_ctx {
 #define MAX_PACKET_MASK		(0xffff << 16)
 #define MAX_PACKET_DECODED(p)	(((p) >> 16) & 0xffff)
 
+/* Get max packet size from ep desc. Bit 10..0 specify the max packet size.
+ * USB2.0 spec 9.6.6.
+ */
+#define GET_MAX_PACKET(p)	((p) & 0x7ff)
+
 /* tx_info bitmasks */
 #define AVG_TRB_LENGTH_FOR_EP(p)	((p) & 0xffff)
 #define MAX_ESIT_PAYLOAD_FOR_EP(p)	(((p) & 0xffff) << 16)