3 files changed, 25 insertions, 19 deletions

diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 40c2f7a4f8fb..5c9c04d7aa76 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -781,7 +781,7 @@ static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
         /* write fifo */
         if (req->req.buf) {
                 if (size > 0)
-                        m66592_write_fifo(m66592, ep->fifoaddr, buf, size);
+                        m66592_write_fifo(m66592, ep, buf, size);
                 if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
                         m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
         }
@@ -827,7 +827,7 @@ static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req)
 
         /* write fifo */
         if (req->req.buf) {
-                m66592_write_fifo(m66592, ep->fifoaddr, buf, size);
+                m66592_write_fifo(m66592, ep, buf, size);
                 if ((size == 0)
                                 || ((size % ep->ep.maxpacket) != 0)
                                 || ((bufsize != ep->ep.maxpacket)
diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h
index b85e05b2e97b..7b93d579af37 100644
--- a/drivers/usb/gadget/m66592-udc.h
+++ b/drivers/usb/gadget/m66592-udc.h
@@ -561,11 +561,26 @@ static inline void m66592_write(struct m66592 *m66592, u16 val,
         iowrite16(val, m66592->reg + offset);
 }
 
+static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
+                unsigned long offset)
+{
+        u16 tmp;
+        tmp = m66592_read(m66592, offset);
+        tmp = tmp & (~pat);
+        tmp = tmp | val;
+        m66592_write(m66592, tmp, offset);
+}
+
+#define m66592_bclr(m66592, val, offset)        \
+                        m66592_mdfy(m66592, 0, val, offset)
+#define m66592_bset(m66592, val, offset)        \
+                        m66592_mdfy(m66592, val, 0, offset)
+
 static inline void m66592_write_fifo(struct m66592 *m66592,
-                unsigned long offset,
+                struct m66592_ep *ep,
                 void *buf, unsigned long len)
 {
-        void __iomem *fifoaddr = m66592->reg + offset;
+        void __iomem *fifoaddr = m66592->reg + ep->fifoaddr;
 
         if (m66592->pdata->on_chip) {
                 unsigned long count;
@@ -591,26 +606,15 @@ static inline void m66592_write_fifo(struct m66592 *m66592,
                 iowrite16_rep(fifoaddr, buf, len);
                 if (odd) {
                         unsigned char *p = buf + len*2;
+                        if (m66592->pdata->wr0_shorted_to_wr1)
+                                m66592_bclr(m66592, M66592_MBW_16, ep->fifosel);
                         iowrite8(*p, fifoaddr);
+                        if (m66592->pdata->wr0_shorted_to_wr1)
+                                m66592_bset(m66592, M66592_MBW_16, ep->fifosel);
                 }
         }
 }
 
-static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
-                unsigned long offset)
-{
-        u16 tmp;
-        tmp = m66592_read(m66592, offset);
-        tmp = tmp & (~pat);
-        tmp = tmp | val;
-        m66592_write(m66592, tmp, offset);
-}
-
-#define m66592_bclr(m66592, val, offset)        \
-                        m66592_mdfy(m66592, 0, val, offset)
-#define m66592_bset(m66592, val, offset)        \
-                        m66592_mdfy(m66592, val, 0, offset)
-
 #endif  /* ifndef __M66592_UDC_H__ */
 
 
diff --git a/include/linux/usb/m66592.h b/include/linux/usb/m66592.h
index cda9625e7df0..a4ba31ab2fed 100644
--- a/include/linux/usb/m66592.h
+++ b/include/linux/usb/m66592.h
@@ -38,6 +38,8 @@ struct m66592_platdata {
         /* (external controller only) one = 3.3V, zero = 1.5V */
         unsigned        vif:1;
 
+        /* (external controller only) set one = WR0_N shorted to WR1_N */
+        unsigned        wr0_shorted_to_wr1:1;
 };
 
 #endif /* __LINUX_USB_M66592_H */