*
* Copyright (c) 2010 Texas Instruments Incorporated
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier: GPL-2.0+
*/
+
#include <common.h>
#include "am35x.h"
/* Turn off the phy */
phy_off();
}
+
+/*
+ * This function reads data from endpoint fifo for AM35x
+ * which supports only 32bit read operation.
+ *
+ * ep - endpoint number
+ * length - number of bytes to read from FIFO
+ * fifo_data - pointer to data buffer into which data is read
+ */
+__attribute__((weak))
+void read_fifo(u8 ep, u32 length, void *fifo_data)
+{
+ u8 *data = (u8 *)fifo_data;
+ u32 val;
+ int i;
+
+ /* select the endpoint index */
+ writeb(ep, &musbr->index);
+
+ if (length > 4) {
+ for (i = 0; i < (length >> 2); i++) {
+ val = readl(&musbr->fifox[ep]);
+ memcpy(data, &val, 4);
+ data += 4;
+ }
+ length %= 4;
+ }
+ if (length > 0) {
+ val = readl(&musbr->fifox[ep]);
+ memcpy(data, &val, length);
+ }
+}