The patch titled
Exar quad port serial
has been added to the -mm tree. Its filename is
exar-quad-port-serial.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Exar quad port serial
From: Paul B Schroeder <pschroeder@xxxxxxxxxxx>
This is on our "Envoy" boxes which we have, according to the documentation, an
"Exar ST16C554/554D Quad UART with 16-byte Fifo's". The box also has two
other "on-board" serial ports and a modem chip.
The two on-board serial UARTs were being detected along with the first two
Exar UARTs. The last two Exar UARTs were not showing up and neither was the
modem.
This patch was the only way I could the kernel to see beyond the standard four
serial ports and get all four of the Exar UARTs to show up.
Signed-off-by: Paul B Schroeder <pschroeder@xxxxxxxxxxx>
Cc: Lennart Sorensen <lsorense@xxxxxxxxxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/serial/8250_exar_st16c554.c | 52 ++++++++++++++++++++++++++
drivers/serial/Kconfig | 11 +++++
drivers/serial/Makefile | 1
include/linux/serial_8250.h | 1
4 files changed, 65 insertions(+)
diff -puN /dev/null drivers/serial/8250_exar_st16c554.c
--- /dev/null
+++ a/drivers/serial/8250_exar_st16c554.c
@@ -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 -puN drivers/serial/Kconfig~exar-quad-port-serial drivers/serial/Kconfig
--- a/drivers/serial/Kconfig~exar-quad-port-serial
+++ a/drivers/serial/Kconfig
@@ -210,6 +210,17 @@ config SERIAL_8250_BOCA
To compile this driver as a module, choose M here: the module
will be called 8250_boca.
+config SERIAL_8250_EXAR_ST16C554
+ tristate "Support Exar ST16C554/554D Quad UART"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ The Uplogix Envoy TU301 uses this Exar Quad UART. If you are
+ tinkering with your Envoy TU301, or have a machine with this UART,
+ say Y here.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_exar_st16c554.
+
config SERIAL_8250_HUB6
tristate "Support Hub6 cards"
depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
diff -puN drivers/serial/Makefile~exar-quad-port-serial drivers/serial/Makefile
--- a/drivers/serial/Makefile~exar-quad-port-serial
+++ a/drivers/serial/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_SERIAL_8250_CONSOLE) += 825
obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
+obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554) += 8250_exar_st16c554.o
obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
obj-$(CONFIG_SERIAL_8250_AU1X00) += 8250_au1x00.o
diff -puN include/linux/serial_8250.h~exar-quad-port-serial include/linux/serial_8250.h
--- a/include/linux/serial_8250.h~exar-quad-port-serial
+++ a/include/linux/serial_8250.h
@@ -41,6 +41,7 @@ enum {
PLAT8250_DEV_FOURPORT,
PLAT8250_DEV_ACCENT,
PLAT8250_DEV_BOCA,
+ PLAT8250_DEV_EXAR_ST16C554,
PLAT8250_DEV_HUB6,
PLAT8250_DEV_MCA,
PLAT8250_DEV_AU1X00,
_
Patches currently in -mm which might be from pschroeder@xxxxxxxxxxx are
exar-quad-port-serial.patch
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