[PATCH] Exar quad port serial

[Paul B Schroeder <pschroeder@uplogix.com>]

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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