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 dd2aa7f..f14e12f 100644
--- a/drivers/usb/musb/musb_hcd.c
+++ b/drivers/usb/musb/musb_hcd.c
@@ -987,6 +987,11 @@
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));