[PATCH] Exar quad port serial

Paul B Schroeder
2006-10-05T17:13:31Z

I put this together real quick to get all of the ports of my "dumb" Exar
quad uart card to work.. Patch applies against 2.6.19-rc1 just fine..

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diff -urN linux-2.6.17.i686.orig/drivers/serial/8250_exar.c linux-2.6.17.i686/drivers/serial/8250_exar.c
--- linux-2.6.17.i686.orig/drivers/serial/8250_exar.c 1969-12-31 18:00:00.000000000 -0600
+++ linux-2.6.17.i686/drivers/serial/8250_exar.c 2006-10-02 17:11:31.000000000 -0500
@@ -0,0 +1,52 @@
+/*
+ * linux/drivers/serial/8250_exar.c
+ *
+ * Written by Paul B Schroeder < pschroeder "at" uplogix "dot" com >
+ * Based on 8250_boca.
+ *
+ * Copyright (C) 2005 Russell King.
+ * Data taken from include/asm-i386/serial.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+
+#define PORT(_base,_irq) \
+ { \
+ .iobase = _base, \
+ .irq = _irq, \
+ .uartclk = 1843200, \
+ .iotype = UPIO_PORT, \
+ .flags = UPF_BOOT_AUTOCONF, \
+ }
+
+static struct plat_serial8250_port exar_data[] = {
+ PORT(0x100, 5),
+ PORT(0x108, 5),
+ PORT(0x110, 5),
+ PORT(0x118, 5),
+ { },
+};
+
+static struct platform_device exar_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_EXAR,
+ .dev = {
+ .platform_data = exar_data,
+ },
+};
+
+static int __init exar_init(void)
+{
+ return platform_device_register(&exar_device);
+}
+
+module_init(exar_init);
+
+MODULE_AUTHOR("Paul B Schroeder");
+MODULE_DESCRIPTION("8250 serial probe module for Exar cards");
+MODULE_LICENSE("GPL");
diff -urN linux-2.6.17.i686.orig/drivers/serial/Kconfig linux-2.6.17.i686/drivers/serial/Kconfig
--- linux-2.6.17.i686.orig/drivers/serial/Kconfig 2006-09-06 14:50:05.000000000 -0500
+++ linux-2.6.17.i686/drivers/serial/Kconfig 2006-10-02 17:13:25.000000000 -0500
@@ -211,6 +211,16 @@
To compile this driver as a module, choose M here: the module
will be called 8250_boca.

+config SERIAL_8250_EXAR
+ tristate "Support Exar cards"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ Say Y here if you have a Exar serial board. Please read the Boca
+ mini-HOWTO, avaialble from <http://www.tldp.org/docs.html#howto>
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_exar.
+
config SERIAL_8250_HUB6
tristate "Support Hub6 cards"
depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
diff -urN linux-2.6.17.i686.orig/drivers/serial/Makefile linux-2.6.17.i686/drivers/serial/Makefile
--- linux-2.6.17.i686.orig/drivers/serial/Makefile 2006-06-17 20:49:35.000000000 -0500
+++ linux-2.6.17.i686/drivers/serial/Makefile 2006-10-02 17:13:52.000000000 -0500
@@ -17,6 +17,7 @@
obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
+obj-$(CONFIG_SERIAL_8250_EXAR) += 8250_exar.o
obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
obj-$(CONFIG_SERIAL_8250_AU1X00) += 8250_au1x00.o
diff -urN linux-2.6.17.i686.orig/include/linux/serial_8250.h linux-2.6.17.i686/include/linux/serial_8250.h
--- linux-2.6.17.i686.orig/include/linux/serial_8250.h 2006-06-17 20:49:35.000000000 -0500
+++ linux-2.6.17.i686/include/linux/serial_8250.h 2006-10-02 17:12:34.000000000 -0500
@@ -41,6 +41,7 @@
PLAT8250_DEV_FOURPORT,
PLAT8250_DEV_ACCENT,
PLAT8250_DEV_BOCA,
+ PLAT8250_DEV_EXAR,
PLAT8250_DEV_HUB6,
PLAT8250_DEV_MCA,
PLAT8250_DEV_AU1X00,

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