* (C) Copyright 2004 Atmark Techno, Inc.
* Yasushi SHOJI <yashi@atmark-techno.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#define SR_RX_FIFO_VALID_DATA 0x01 /* data in receive FIFO */
#define SR_RX_FIFO_FULL 0x02 /* receive FIFO full */
+#define ULITE_CONTROL_RST_TX 0x01
+#define ULITE_CONTROL_RST_RX 0x02
+
struct uartlite {
unsigned int rx_fifo;
unsigned int tx_fifo;
unsigned int status;
+ unsigned int control;
};
static struct uartlite *userial_ports[4] = {
#endif
};
-void uartlite_serial_putc(const char c, const int port)
+static void uartlite_serial_putc(const char c, const int port)
{
struct uartlite *regs = userial_ports[port];
out_be32(®s->tx_fifo, c & 0xff);
}
-void uartlite_serial_puts(const char *s, const int port)
+static void uartlite_serial_puts(const char *s, const int port)
{
while (*s)
uartlite_serial_putc(*s++, port);
}
-int uartlite_serial_getc(const int port)
+static int uartlite_serial_getc(const int port)
{
struct uartlite *regs = userial_ports[port];
return in_be32(®s->rx_fifo) & 0xff;
}
-int uartlite_serial_tstc(const int port)
+static int uartlite_serial_tstc(const int port)
{
struct uartlite *regs = userial_ports[port];
static int uartlite_serial_init(const int port)
{
- if (userial_ports[port])
- return 0;
- return -1;
-}
-
-#if !defined(CONFIG_SERIAL_MULTI)
-int serial_init(void)
-{
- return uartlite_serial_init(0);
-}
-
-void serial_setbrg(void)
-{
- /* FIXME: what's this for? */
-}
-
-void serial_putc(const char c)
-{
- uartlite_serial_putc(c, 0);
-}
-
-void serial_puts(const char *s)
-{
- uartlite_serial_puts(s, 0);
-}
+ struct uartlite *regs = userial_ports[port];
-int serial_getc(void)
-{
- return uartlite_serial_getc(0);
-}
+ if (regs) {
+ out_be32(®s->control, 0);
+ out_be32(®s->control,
+ ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
+ in_be32(®s->control);
+ return 0;
+ }
-int serial_tstc(void)
-{
- return uartlite_serial_tstc(0);
+ return -1;
}
-#endif
-#if defined(CONFIG_SERIAL_MULTI)
/* Multi serial device functions */
#define DECLARE_ESERIAL_FUNCTIONS(port) \
- int userial##port##_init(void) \
+ static int userial##port##_init(void) \
{ return uartlite_serial_init(port); } \
- void userial##port##_setbrg(void) {} \
- int userial##port##_getc(void) \
+ static void userial##port##_setbrg(void) {} \
+ static int userial##port##_getc(void) \
{ return uartlite_serial_getc(port); } \
- int userial##port##_tstc(void) \
+ static int userial##port##_tstc(void) \
{ return uartlite_serial_tstc(port); } \
- void userial##port##_putc(const char c) \
+ static void userial##port##_putc(const char c) \
{ uartlite_serial_putc(c, port); } \
- void userial##port##_puts(const char *s) \
+ static void userial##port##_puts(const char *s) \
{ uartlite_serial_puts(s, port); }
/* Serial device descriptor */
return NULL;
}
-#endif /* CONFIG_SERIAL_MULTI */
+
+void uartlite_serial_initialize(void)
+{
+#ifdef XILINX_UARTLITE_BASEADDR
+ serial_register(&uartlite_serial0_device);
+#endif /* XILINX_UARTLITE_BASEADDR */
+#ifdef XILINX_UARTLITE_BASEADDR1
+ serial_register(&uartlite_serial1_device);
+#endif /* XILINX_UARTLITE_BASEADDR1 */
+#ifdef XILINX_UARTLITE_BASEADDR2
+ serial_register(&uartlite_serial2_device);
+#endif /* XILINX_UARTLITE_BASEADDR2 */
+#ifdef XILINX_UARTLITE_BASEADDR3
+ serial_register(&uartlite_serial3_device);
+#endif /* XILINX_UARTLITE_BASEADDR3 */
+}