mx1ads: remove board support

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

diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c
index fb28aa9eb94bbc3d1ffe52958f63c3c381b58c24..0573c7a9876460c0035dc54accb195ff0138cef8 100644 (file)
--- a/drivers/serial/altera_jtag_uart.c
+++ b/drivers/serial/altera_jtag_uart.c
@@ -2,29 +2,15 @@
  * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
  * Scott McNutt <smcnutt@psyent.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 <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
 #include <nios2-io.h>
+#include <linux/compiler.h>
+#include <serial.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -33,28 +19,36 @@ DECLARE_GLOBAL_DATA_PTR;
  *-----------------------------------------------------------------*/
 static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE;
 
-void serial_setbrg( void ){ return; }
-int serial_init( void ) { return(0);}
+static void altera_jtag_serial_setbrg(void)
+{
+}
 
-void serial_putc (char c)
+static int altera_jtag_serial_init(void)
 {
-       while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0)
-               WATCHDOG_RESET ();
-       writel ((unsigned char)c, &jtag->data);
+       return 0;
 }
 
-void serial_puts (const char *s)
+static void altera_jtag_serial_putc(char c)
 {
-       while (*s != 0)
-               serial_putc (*s++);
+       while (1) {
+               unsigned st = readl(&jtag->control);
+               if (NIOS_JTAG_WSPACE(st))
+                       break;
+#ifdef CONFIG_ALTERA_JTAG_UART_BYPASS
+               if (!(st & NIOS_JTAG_AC)) /* no connection */
+                       return;
+#endif
+               WATCHDOG_RESET();
+       }
+       writel ((unsigned char)c, &jtag->data);
 }
 
-int serial_tstc (void)
+static int altera_jtag_serial_tstc(void)
 {
        return ( readl (&jtag->control) & NIOS_JTAG_RRDY);
 }
 
-int serial_getc (void)
+static int altera_jtag_serial_getc(void)
 {
        int c;
        unsigned val;
@@ -68,3 +62,24 @@ int serial_getc (void)
        c = val & 0x0ff;
        return (c);
 }
+
+static struct serial_device altera_jtag_serial_drv = {
+       .name   = "altera_jtag_uart",
+       .start  = altera_jtag_serial_init,
+       .stop   = NULL,
+       .setbrg = altera_jtag_serial_setbrg,
+       .putc   = altera_jtag_serial_putc,
+       .puts   = default_serial_puts,
+       .getc   = altera_jtag_serial_getc,
+       .tstc   = altera_jtag_serial_tstc,
+};
+
+void altera_jtag_serial_initialize(void)
+{
+       serial_register(&altera_jtag_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+       return &altera_jtag_serial_drv;
+}