usb: musb: setup TXCOUNT for Blackfin musb

The Blackfin implementation of musb has a TXCOUNT register that needs to
be programmed when transmitting data.

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/usb/musb/musb_hcd.c b/drivers/usb/musb/musb_hcd.c
index dd2aa7f27c1be2c231acbc857336fde6f4def0c3..f14e12ffaf61a3152bbfbac2d8c33921ce7dd944 100644 (file)
--- a/drivers/usb/musb/musb_hcd.c
+++ b/drivers/usb/musb/musb_hcd.c
@@ -987,6 +987,11 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
                        nextlen = ((len-txlen) < dev->epmaxpacketout[ep]) ?
                                        (len-txlen) : dev->epmaxpacketout[ep];
 
+#ifdef CONFIG_USB_BLACKFIN
+                       /* Set the transfer data size */
+                       writew(nextlen, &musbr->txcount);
+#endif
+
                        /* Write the data to the FIFO */
                        write_fifo(MUSB_BULK_EP, nextlen,
                                        (void *)(((u8 *)buffer) + txlen));