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authorMarkus Klotzbuecher <mk@denx.de>2008-07-21 12:37:56 +0200
committerMarkus Klotzbuecher <mk@denx.de>2008-07-21 12:37:56 +0200
commitab06bddb04ed4be50a8f9ad5f94fa23953a734e3 (patch)
tree5df2528b42f073dd5bbb34b14f288a1811073729 /drivers/serial
parent262423955895ba4599fa11d7c49dcffb65af0afd (diff)
parent1953d128fd07f07d1c3810a28c0863ea64dae1b6 (diff)
Merge branch 'master' of git://www.denx.de/git/u-boot
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/mcfuart.c4
-rw-r--r--drivers/serial/serial.c5
-rw-r--r--drivers/serial/serial_xuartlite.c37
-rw-r--r--drivers/serial/usbtty.c4
4 files changed, 28 insertions, 22 deletions
diff --git a/drivers/serial/mcfuart.c b/drivers/serial/mcfuart.c
index 88f3eb10ab..5eb4f458f8 100644
--- a/drivers/serial/mcfuart.c
+++ b/drivers/serial/mcfuart.c
@@ -63,8 +63,8 @@ int serial_init(void)
uart->umr = UART_UMR_SB_STOP_BITS_1;
/* Setting up BaudRate */
- counter = (u32) (gd->bus_clk / (gd->baudrate));
- counter >>= 5;
+ counter = (u32) ((gd->bus_clk / 32) + (gd->baudrate / 2));
+ counter = counter / gd->baudrate;
/* write to CTUR: divide counter upper byte */
uart->ubg1 = (u8) ((counter & 0xff00) >> 8);
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
index 182ca2d149..8bbfcf9c0c 100644
--- a/drivers/serial/serial.c
+++ b/drivers/serial/serial.c
@@ -147,10 +147,11 @@ static int calc_divisor (NS16550_t port)
/* Compute divisor value. Normally, we should simply return:
* CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate
- * but we need to round that value by adding 0.5 or 8/16.
+ * but we need to round that value by adding 0.5.
* Rounding is especially important at high baud rates.
*/
- return (((16 * CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate) + 8) / 16;
+ return (CFG_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
+ (MODE_X_DIV * gd->baudrate);
}
#if !defined(CONFIG_SERIAL_MULTI)
diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index d678ab6b76..74546ce846 100644
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -1,6 +1,8 @@
/*
- * (C) Copyright 2004 Atmark Techno, Inc.
+ * (C) Copyright 2008 Michal Simek <monstr@monstr.eu>
+ * Clean driver and add xilinx constant from header file
*
+ * (C) Copyright 2004 Atmark Techno, Inc.
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* See file CREDITS for list of people who contributed to this
@@ -13,7 +15,7 @@
*
* 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
+ * 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
@@ -23,19 +25,21 @@
*/
#include <config.h>
+#include <asm/io.h>
#ifdef CONFIG_XILINX_UARTLITE
-#include <asm/serial_xuartlite.h>
+#define RX_FIFO_OFFSET 0 /* receive FIFO, read only */
+#define TX_FIFO_OFFSET 4 /* transmit FIFO, write only */
+#define STATUS_REG_OFFSET 8 /* status register, read only */
-/* FIXME: we should convert these to in32 and out32 */
-#define IO_WORD(offset) (*(volatile unsigned long *)(offset))
-#define IO_SERIAL(offset) IO_WORD(CONFIG_SERIAL_BASE + (offset))
+#define SR_TX_FIFO_FULL 0x08 /* transmit FIFO full */
+#define SR_RX_FIFO_VALID_DATA 0x01 /* data in receive FIFO */
+#define SR_RX_FIFO_FULL 0x02 /* receive FIFO full */
-#define IO_SERIAL_RX_FIFO IO_SERIAL(XUL_RX_FIFO_OFFSET)
-#define IO_SERIAL_TX_FIFO IO_SERIAL(XUL_TX_FIFO_OFFSET)
-#define IO_SERIAL_STATUS IO_SERIAL(XUL_STATUS_REG_OFFSET)
-#define IO_SERIAL_CONTROL IO_SERIAL(XUL_CONTROL_REG_OFFSET)
+#define UARTLITE_STATUS (CONFIG_SERIAL_BASE + STATUS_REG_OFFSET)
+#define UARTLITE_TX_FIFO (CONFIG_SERIAL_BASE + TX_FIFO_OFFSET)
+#define UARTLITE_RX_FIFO (CONFIG_SERIAL_BASE + RX_FIFO_OFFSET)
int serial_init(void)
{
@@ -50,9 +54,10 @@ void serial_setbrg(void)
void serial_putc(const char c)
{
- if (c == '\n') serial_putc('\r');
- while (IO_SERIAL_STATUS & XUL_SR_TX_FIFO_FULL);
- IO_SERIAL_TX_FIFO = (unsigned char) (c & 0xff);
+ if (c == '\n')
+ serial_putc('\r');
+ while (in_be32((u32 *) UARTLITE_STATUS) & SR_TX_FIFO_FULL);
+ out_be32((u32 *) UARTLITE_TX_FIFO, (unsigned char) (c & 0xff));
}
void serial_puts(const char * s)
@@ -64,13 +69,13 @@ void serial_puts(const char * s)
int serial_getc(void)
{
- while (!(IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA));
- return IO_SERIAL_RX_FIFO & 0xff;
+ while (!(in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA));
+ return in_be32((u32 *) UARTLITE_RX_FIFO) & 0xff;
}
int serial_tstc(void)
{
- return (IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA);
+ return (in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA);
}
#endif /* CONFIG_MICROBLZE */
diff --git a/drivers/serial/usbtty.c b/drivers/serial/usbtty.c
index cc2bdac479..2bc5c3c838 100644
--- a/drivers/serial/usbtty.c
+++ b/drivers/serial/usbtty.c
@@ -529,8 +529,8 @@ int drv_usbtty_init (void)
}
snlen = strlen(sn);
if (snlen > sizeof(serial_number) - 1) {
- printf ("Warning: serial number %s is too long (%d > %d)\n",
- sn, snlen, sizeof(serial_number) - 1);
+ printf ("Warning: serial number %s is too long (%d > %lu)\n",
+ sn, snlen, (ulong)(sizeof(serial_number) - 1));
snlen = sizeof(serial_number) - 1;
}
memcpy (serial_number, sn, snlen);