diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/Makefile | 1 | ||||
| -rw-r--r-- | drivers/serial/serial_lpc2292.c | 105 |
2 files changed, 106 insertions, 0 deletions
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index 95255df..eaf4f8e 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -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 diff --git a/drivers/serial/serial_lpc2292.c b/drivers/serial/serial_lpc2292.c new file mode 100644 index 0000000..87b7d5f --- /dev/null +++ b/drivers/serial/serial_lpc2292.c @@ -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); +} + |