serial: UniPhier: add .pending handler

[karo-tx-uboot.git] / drivers / serial / serial_xuartlite.c

diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index 9cc0b7f1d2116af41dc924ba2d787fb2133c71d2..988438e75471a37f2643328c910ff13b0fe753e5 100644 (file)
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -5,23 +5,7 @@
  * (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>
@@ -34,10 +18,14 @@
 #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] = {
@@ -55,7 +43,7 @@ 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];
 
@@ -67,13 +55,13 @@ void uartlite_serial_putc(const char c, const int port)
        out_be32(&regs->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];
 
@@ -82,7 +70,7 @@ int uartlite_serial_getc(const int port)
        return in_be32(&regs->rx_fifo) & 0xff;
 }
 
-int uartlite_serial_tstc(const int port)
+static int uartlite_serial_tstc(const int port)
 {
        struct uartlite *regs = userial_ports[port];
 
@@ -91,23 +79,31 @@ int uartlite_serial_tstc(const int port)
 
 static int uartlite_serial_init(const int port)
 {
-       if (userial_ports[port])
+       struct uartlite *regs = userial_ports[port];
+
+       if (regs) {
+               out_be32(&regs->control, 0);
+               out_be32(&regs->control,
+                        ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
+               in_be32(&regs->control);
                return 0;
+       }
+
        return -1;
 }
 
 /* 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 */