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lpc2292: move serial driver to drivers/serial 

add CONFIG_LPC2292_SERIAL to activate the driver

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2009-03-29 23:01:42 +02:00
parent 176a600d0e
commit 6790c55704
5 changed files with 108 additions and 77 deletions
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77
cpu/arm720t/serial.c
View File

@ -122,81 +122,4 @@ serial_puts (const char *s)
serial_putc (*s++);
}
}
#elif defined(CONFIG_LPC2292)
DECLARE_GLOBAL_DATA_PTR;
#include <asm/arch/hardware.h>
void serial_setbrg (void)
{
unsigned short divisor = 0;
switch (gd->baudrate) {
case 1200: divisor = 3072; break;
case 9600: divisor = 384; break;
case 19200: divisor = 192; break;
case 38400: divisor = 96; break;
case 57600: divisor = 64; break;
case 115200: divisor = 32; break;
default: hang (); break;
}
/* init serial UART0 */
PUT8(U0LCR, 0);
PUT8(U0IER, 0);
PUT8(U0LCR, 0x80); /* DLAB=1 */
PUT8(U0DLL, (unsigned char)(divisor & 0x00FF));
PUT8(U0DLM, (unsigned char)(divisor >> 8));
PUT8(U0LCR, 0x03); /* 8N1, DLAB=0 */
PUT8(U0FCR, 1); /* Enable RX and TX FIFOs */
}
int serial_init (void)
{
unsigned long pinsel0;
serial_setbrg ();
pinsel0 = GET32(PINSEL0);
pinsel0 &= ~(0x00000003);
pinsel0 |= 5;
PUT32(PINSEL0, pinsel0);
return (0);
}
void serial_putc (const char c)
{
if (c == '\n')
{
while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
PUT8(U0THR, '\r');
}
while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
PUT8(U0THR, c);
}
int serial_getc (void)
{
while((GET8(U0LSR) & 1) == 0);
return GET8(U0RBR);
}
void
serial_puts (const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
/* Test if there is a byte to read */
int serial_tstc (void)
{
return (GET8(U0LSR) & 1);
}
#endif

1
drivers/serial/Makefile
View File

@ -35,6 +35,7 @@ COBJS-$(CONFIG_S3C64XX) += s3c64xx.o
COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o
COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
COBJS-$(CONFIG_KS8695_SERIAL) += serial_ks8695.o
COBJS-$(CONFIG_LPC2292_SERIAL) += serial_lpc2292.o
COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
COBJS-$(CONFIG_MX31_UART) += serial_mx31.o
COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o

105
drivers/serial/serial_lpc2292.c Normal file
View File

@ -0,0 +1,105 @@
/*
* (C) Copyright 2002-2004
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* 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
*
*/
#include <common.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
void serial_setbrg (void)
{
unsigned short divisor = 0;
switch (gd->baudrate) {
case 1200: divisor = 3072; break;
case 9600: divisor = 384; break;
case 19200: divisor = 192; break;
case 38400: divisor = 96; break;
case 57600: divisor = 64; break;
case 115200: divisor = 32; break;
default: hang (); break;
}
/* init serial UART0 */
PUT8(U0LCR, 0);
PUT8(U0IER, 0);
PUT8(U0LCR, 0x80); /* DLAB=1 */
PUT8(U0DLL, (unsigned char)(divisor & 0x00FF));
PUT8(U0DLM, (unsigned char)(divisor >> 8));
PUT8(U0LCR, 0x03); /* 8N1, DLAB=0 */
PUT8(U0FCR, 1); /* Enable RX and TX FIFOs */
}
int serial_init (void)
{
unsigned long pinsel0;
serial_setbrg ();
pinsel0 = GET32(PINSEL0);
pinsel0 &= ~(0x00000003);
pinsel0 |= 5;
PUT32(PINSEL0, pinsel0);
return (0);
}
void serial_putc (const char c)
{
if (c == '\n')
{
while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
PUT8(U0THR, '\r');
}
while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
PUT8(U0THR, c);
}
int serial_getc (void)
{
while((GET8(U0LSR) & 1) == 0);
return GET8(U0RBR);
}
void
serial_puts (const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
/* Test if there is a byte to read */
int serial_tstc (void)
{
return (GET8(U0LSR) & 1);
}

1
include/configs/SMN42.h
View File

@ -59,6 +59,7 @@
/*
* select serial console configuration
*/
#define CONFIG_LPC2292_SERIAL
#define CONFIG_SERIAL1 1 /* we use Serial line 1 */
/* allow to overwrite serial and ethaddr */

1
include/configs/lpc2292sodimm.h
View File

@ -59,6 +59,7 @@
/*
* select serial console configuration
*/
#define CONFIG_LPC2292_SERIAL
#define CONFIG_SERIAL1 1 /* we use Serial line 1 */
/* allow to overwrite serial and ethaddr */