diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/Makefile | 3 | ||||
| -rw-r--r-- | drivers/serial_xuartlite.c | 72 |
2 files changed, 74 insertions, 1 deletions
diff --git a/drivers/Makefile b/drivers/Makefile index ff6b6d2..1053624 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -39,7 +39,8 @@ OBJS = 3c589.o 5701rls.o ali512x.o \ ps2ser.o ps2mult.o pc_keyb.o keyboard.o \ rtl8019.o rtl8139.o \ s3c24x0_i2c.o sed13806.o sed156x.o \ - serial.o serial_max3100.o serial_pl011.o serial_pl010.o \ + serial.o serial_max3100.o serial_pl010.o serial_pl011.o \ + serial_xuartlite.o \ smc91111.o smiLynxEM.o status_led.o sym53c8xx.o \ ti_pci1410a.o tigon3.o w83c553f.o omap1510_i2c.o \ usbdcore.o usbdcore_ep0.o usbdcore_omap1510.o usbtty.o \ diff --git a/drivers/serial_xuartlite.c b/drivers/serial_xuartlite.c new file mode 100644 index 0000000..3af150d --- /dev/null +++ b/drivers/serial_xuartlite.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * 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 + */ + +#include <config.h> +#include <asm/serial_xuartlite.h> + +/* 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 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) + +int serial_init(void) +{ + /* FIXME: Nothing for now. We should initialize fifo, etc */ + return 0; +} + +void serial_setbrg(void) +{ + /* FIXME: what's this for? */ +} + +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); + return 0; +} + +void serial_puts(const char * s) +{ + while (*s) { + serial_putc(*s++); + } +} + +int serial_getc(void) +{ + while (!(IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA)); + return IO_SERIAL_RX_FIFO & 0xff; +} + +int serial_tstc(void) +{ + return (IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA); +} |