doc: SPI: Add qspi test details on AM43xx

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

diff --git a/drivers/serial/serial_ixp.c b/drivers/serial/serial_ixp.c
index dd26af49b54d00e21fb5dac5519dd82031cdcfa8..b9d0f5bfa5208e3382f3cf6dc2abbd4102caf008 100644 (file)
--- a/drivers/serial/serial_ixp.c
+++ b/drivers/serial/serial_ixp.c
@@ -12,24 +12,14 @@
  *
  * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
  *
- * 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 <common.h>
 #include <asm/arch/ixp425.h>
+#include <watchdog.h>
+#include <serial.h>
+#include <linux/compiler.h>
 
 /*
  *               14.7456 MHz
@@ -40,7 +30,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void serial_setbrg (void)
+static void ixp_serial_setbrg(void)
 {
        unsigned int quot = 0;
        int uart = CONFIG_SYS_IXP425_CONSOLE;
@@ -71,7 +61,7 @@ void serial_setbrg (void)
  * are always 8 data bits, no parity, 1 stop bit, no start bits.
  *
  */
-int serial_init (void)
+static int ixp_serial_init(void)
 {
        serial_setbrg ();
 
@@ -82,10 +72,11 @@ int serial_init (void)
 /*
  * Output a single byte to the serial port.
  */
-void serial_putc (const char c)
+static void ixp_serial_putc(const char c)
 {
        /* wait for room in the tx FIFO on UART */
-       while ((LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_TEMT) == 0);
+       while ((LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_TEMT) == 0)
+               WATCHDOG_RESET();       /* Reset HW Watchdog, if needed */
 
        THR(CONFIG_SYS_IXP425_CONSOLE) = c;
 
@@ -99,7 +90,7 @@ void serial_putc (const char c)
  * otherwise. When the function is succesfull, the character read is
  * written into its argument c.
  */
-int serial_tstc (void)
+static int ixp_serial_tstc(void)
 {
        return LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR;
 }
@@ -109,17 +100,31 @@ int serial_tstc (void)
  * otherwise. When the function is succesfull, the character read is
  * written into its argument c.
  */
-int serial_getc (void)
+static int ixp_serial_getc(void)
 {
-       while (!(LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR));
+       while (!(LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR))
+               WATCHDOG_RESET();       /* Reset HW Watchdog, if needed */
 
        return (char) RBR(CONFIG_SYS_IXP425_CONSOLE) & 0xff;
 }
 
-void
-serial_puts (const char *s)
+static struct serial_device ixp_serial_drv = {
+       .name   = "ixp_serial",
+       .start  = ixp_serial_init,
+       .stop   = NULL,
+       .setbrg = ixp_serial_setbrg,
+       .putc   = ixp_serial_putc,
+       .puts   = default_serial_puts,
+       .getc   = ixp_serial_getc,
+       .tstc   = ixp_serial_tstc,
+};
+
+void ixp_serial_initialize(void)
+{
+       serial_register(&ixp_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
 {
-       while (*s) {
-               serial_putc (*s++);
-       }
+       return &ixp_serial_drv;
 }