X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fserial%2Fatmel_usart.c;h=e326b2bcff9867985d94720b4fbc2a8033568d88;hb=5778d54afc99b6a9321acf2d8b5ad87d246008dc;hp=f35b99730f786528de863802191a1f11e2cd3846;hpb=f743931f9b4d4e15c9bdfe726bef033ea1f1402c;p=oweals%2Fu-boot.git

diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index f35b99730f..e326b2bcff 100644
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -1,6 +1,9 @@
 /*
  * Copyright (C) 2004-2006 Atmel Corporation
  *
+ * Modified to support C structur SoC access by
+ * Andreas Bießmann <biessmann@corscience.de>
+ *
  * 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
@@ -16,25 +19,11 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include <common.h>
+#include <watchdog.h>
 
-#ifdef CONFIG_ATMEL_USART
 #include <asm/io.h>
 #include <asm/arch/clk.h>
-#include <asm/arch/memory-map.h>
-
-#if defined(CONFIG_USART0)
-# define USART_ID	0
-# define USART_BASE	USART0_BASE
-#elif defined(CONFIG_USART1)
-# define USART_ID	1
-# define USART_BASE	USART1_BASE
-#elif defined(CONFIG_USART2)
-# define USART_ID	2
-# define USART_BASE	USART2_BASE
-#elif defined(CONFIG_USART3)
-# define USART_ID	3
-# define USART_BASE	USART3_BASE
-#endif
+#include <asm/arch/hardware.h>
 
 #include "atmel_usart.h"
 
@@ -42,6 +31,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 void serial_setbrg(void)
 {
+	atmel_usart3_t *usart = (atmel_usart3_t *)CONFIG_USART_BASE;
 	unsigned long divisor;
 	unsigned long usart_hz;
 
@@ -50,34 +40,39 @@ void serial_setbrg(void)
 	 * Baud Rate = --------------
 	 *                16 * CD
 	 */
-	usart_hz = get_usart_clk_rate(USART_ID);
+	usart_hz = get_usart_clk_rate(CONFIG_USART_ID);
 	divisor = (usart_hz / 16 + gd->baudrate / 2) / gd->baudrate;
-	usart3_writel(BRGR, USART3_BF(CD, divisor));
+	writel(USART3_BF(CD, divisor), &usart->brgr);
 }
 
 int serial_init(void)
 {
-	usart3_writel(CR, USART3_BIT(RSTRX) | USART3_BIT(RSTTX));
+	atmel_usart3_t *usart = (atmel_usart3_t *)CONFIG_USART_BASE;
+
+	writel(USART3_BIT(RSTRX) | USART3_BIT(RSTTX), &usart->cr);
 
 	serial_setbrg();
 
-	usart3_writel(CR, USART3_BIT(RXEN) | USART3_BIT(TXEN));
-	usart3_writel(MR, (USART3_BF(USART_MODE, USART3_USART_MODE_NORMAL)
+	writel(USART3_BIT(RXEN) | USART3_BIT(TXEN), &usart->cr);
+	writel((USART3_BF(USART_MODE, USART3_USART_MODE_NORMAL)
 			   | USART3_BF(USCLKS, USART3_USCLKS_MCK)
 			   | USART3_BF(CHRL, USART3_CHRL_8)
 			   | USART3_BF(PAR, USART3_PAR_NONE)
-			   | USART3_BF(NBSTOP, USART3_NBSTOP_1)));
+			   | USART3_BF(NBSTOP, USART3_NBSTOP_1)),
+			   &usart->mr);
 
 	return 0;
 }
 
 void serial_putc(char c)
 {
+	atmel_usart3_t *usart = (atmel_usart3_t *)CONFIG_USART_BASE;
+
 	if (c == '\n')
 		serial_putc('\r');
 
-	while (!(usart3_readl(CSR) & USART3_BIT(TXRDY))) ;
-	usart3_writel(THR, c);
+	while (!(readl(&usart->csr) & USART3_BIT(TXRDY)));
+	writel(c, &usart->thr);
 }
 
 void serial_puts(const char *s)
@@ -88,13 +83,15 @@ void serial_puts(const char *s)
 
 int serial_getc(void)
 {
-	while (!(usart3_readl(CSR) & USART3_BIT(RXRDY))) ;
-	return usart3_readl(RHR);
+	atmel_usart3_t *usart = (atmel_usart3_t *)CONFIG_USART_BASE;
+
+	while (!(readl(&usart->csr) & USART3_BIT(RXRDY)))
+		 WATCHDOG_RESET();
+	return readl(&usart->rhr);
 }
 
 int serial_tstc(void)
 {
-	return (usart3_readl(CSR) & USART3_BIT(RXRDY)) != 0;
+	atmel_usart3_t *usart = (atmel_usart3_t *)CONFIG_USART_BASE;
+	return (readl(&usart->csr) & USART3_BIT(RXRDY)) != 0;
 }
-
-#endif /* CONFIG_ATMEL_USART */