usb: mtu3: fix transfer error of USB3 Gen2 isoc

To support USB3 Gen2 ISOC, the registers of TXCSR1 and RXCSR1
are adjusted to support greater maxpkt and mult value, this
patch fix this issue

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h
index 87823ac0d120..e3143f81b6a0 100644
--- a/drivers/usb/mtu3/mtu3.h
+++ b/drivers/usb/mtu3/mtu3.h
@@ -63,6 +63,15 @@ struct mtu3_request;
 #define MTU3_U2_IP_SLOT_DEFAULT 1
 
 /**
+ * IP TRUNK version
+ * from 0x1003 version, USB3 Gen2 is supported, two changes affect driver:
+ * 1. MAXPKT and MULTI bits layout of TXCSR1 and RXCSR1 are adjusted,
+ *    but not backward compatible
+ * 2. QMU extend buffer length supported
+ */
+#define MTU3_TRUNK_VERS_1003	0x1003
+
+/**
  * Normally the device works on HS or SS, to simplify fifo management,
  * devide fifo into some 512B parts, use bitmap to manage it; And
  * 128 bits size of bitmap is large enough, that means it can manage
@@ -316,6 +325,7 @@ static inline struct ssusb_mtk *dev_to_ssusb(struct device *dev)
  * @may_wakeup: means device's remote wakeup is enabled
  * @is_self_powered: is reported in device status and the config descriptor
  * @delayed_status: true when function drivers ask for delayed status
+ * @gen2cp: compatible with USB3 Gen2 IP
  * @ep0_req: dummy request used while handling standard USB requests
  *		for GET_STATUS and SET_SEL
  * @setup_buf: ep0 response buffer for GET_STATUS and SET_SEL requests
@@ -356,6 +366,7 @@ struct mtu3 {
 	unsigned u2_enable:1;
 	unsigned is_u3_ip:1;
 	unsigned delayed_status:1;
+	unsigned gen2cp:1;
 
 	u8 address;
 	u8 test_mode_nr;