karo: tx6: factor out PMIC initialization

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

diff --git a/drivers/serial/opencores_yanu.c b/drivers/serial/opencores_yanu.c
index dacda5341e46432dd1e4ec1c2fc6ba6aa616421b..8de2eca2ac72c1ef32b6f2eb26c286fa2710fb47 100644 (file)
--- a/drivers/serial/opencores_yanu.c
+++ b/drivers/serial/opencores_yanu.c
@@ -1,23 +1,7 @@
 /*
  * Copyright 2010, Renato Andreola <renato.andreola@imagos.it>
  *
- * 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>
@@ -37,7 +21,7 @@ static yanu_uart_t *uart = (yanu_uart_t *)CONFIG_SYS_NIOS_CONSOLE;
 
 /* Everything's already setup for fixed-baud PTF assignment*/
 
-void serial_setbrg (void)
+static void oc_serial_setbrg(void)
 {
        int n, k;
        const unsigned max_uns = 0xFFFFFFFF;
@@ -61,15 +45,15 @@ void serial_setbrg (void)
            ((unsigned)CONFIG_SYS_CLK_FREQ >> k);
 
        baud = best_m + best_n * YANU_BAUDE;
-       writel(&uart->baud, baud);
+       writel(baud, &uart->baud);
 
        return;
 }
 
 #else
 
-void serial_setbrg (void)
-{      
+static void oc_serial_setbrg(void)
+{
        int n, k;
        const unsigned max_uns = 0xFFFFFFFF;
        unsigned best_n, best_m, baud;
@@ -92,7 +76,7 @@ void serial_setbrg (void)
            ((unsigned)CONFIG_SYS_CLK_FREQ >> k);
 
        baud = best_m + best_n * YANU_BAUDE;
-       writel(&uart->baud, baud);
+       writel(baud, &uart->baud);
 
        return;
 }
@@ -100,7 +84,7 @@ void serial_setbrg (void)
 
 #endif /* CONFIG_SYS_NIOS_FIXEDBAUD */
 
-int serial_init (void)
+static int oc_serial_init(void)
 {
        unsigned action,control;
 
@@ -113,13 +97,15 @@ int serial_init (void)
                YANU_ACTION_RPE         |
            YANU_ACTION_RFE | YANU_ACTION_RFIFO_CLEAR | YANU_ACTION_TFIFO_CLEAR;
 
-       writel(&uart->action, action);
-       
-       /*  control register cleanup */
-       /* no interrupts enabled */
-       /* one stop bit */
-       /* hardware flow control disabled */
-       /* 8 bits */
+       writel(action, &uart->action);
+
+       /*
+        * control register cleanup
+        * no interrupts enabled
+        * one stop bit
+        * hardware flow control disabled
+        * 8 bits
+        */
        control = (0x7 << YANU_CONTROL_BITS_POS);
        /* enven parity just to be clean */
        control |= YANU_CONTROL_PAREVEN;
@@ -127,7 +113,7 @@ int serial_init (void)
        control |= YANU_CONTROL_RDYDLY * YANU_RXFIFO_DLY;
        control |= YANU_CONTROL_TXTHR *  YANU_TXFIFO_THR;
 
-       writel(&uart->control, control);
+       writel(control, &uart->control);
 
        /* to set baud rate */
        serial_setbrg();
@@ -139,14 +125,14 @@ int serial_init (void)
 /*-----------------------------------------------------------------------
  * YANU CONSOLE
  *---------------------------------------------------------------------*/
-void serial_putc (char c)
+static void oc_serial_putc(char c)
 {
        int tx_chars;
        unsigned status;
 
        if (c == '\n')
                serial_putc ('\r');
-       
+
        while (1) {
                status = readl(&uart->status);
                tx_chars = (status>>YANU_TFIFO_CHARS_POS)
@@ -156,33 +142,46 @@ void serial_putc (char c)
                WATCHDOG_RESET ();
        }
 
-       writel(&uart->data, (unsigned char)c);
+       writel((unsigned char)c, &uart->data);
 }
 
-void serial_puts (const char *s)
-{
-       while (*s != 0) {
-               serial_putc (*s++);
-       }
-}
-
-
-int serial_tstc(void)
+static int oc_serial_tstc(void)
 {
        unsigned status ;
 
        status = readl(&uart->status);
        return (((status >> YANU_RFIFO_CHARS_POS) &
                 ((1 << YANU_RFIFO_CHARS_N) - 1)) > 0);
-}      
+}
 
-int serial_getc (void)
+statoc int oc_serial_getc(void)
 {
        while (serial_tstc() == 0)
                WATCHDOG_RESET ();
-       
+
        /* first we pull the char */
-       writel(&uart->action, YANU_ACTION_RFIFO_PULL);
+       writel(YANU_ACTION_RFIFO_PULL, &uart->action);
 
        return(readl(&uart->data) & YANU_DATA_CHAR_MASK);
 }
+
+static struct serial_device oc_serial_drv = {
+       .name   = "oc_serial",
+       .start  = oc_serial_init,
+       .stop   = NULL,
+       .setbrg = oc_serial_setbrg,
+       .putc   = oc_serial_putc,
+       .puts   = default_serial_puts,
+       .getc   = oc_serial_getc,
+       .tstc   = oc_serial_tstc,
+};
+
+void oc_serial_initialize(void)
+{
+       serial_register(&oc_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+       return &oc_serial_drv;
+}