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authorwdenk <wdenk>2004-04-18 21:13:41 +0000
committerwdenk <wdenk>2004-04-18 21:13:41 +0000
commit507bbe3e8084a82c20399367801da87db7d14e65 (patch)
tree0660633e2e1caf4b819fd46ed43f83e3e05c5523 /drivers
parent998eaaecd46ee5f00550e30e606cb5556e0b9345 (diff)
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* Patch by Yasushi Shoji, 07 Apr 2004:
- add support for microblaze processors - add support for AtmarkTechno "suzaku" board
Diffstat (limited to 'drivers')
-rw-r--r--drivers/Makefile3
-rw-r--r--drivers/serial_xuartlite.c72
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);
+}