diff --git a/arch/arm/configs/bast_defconfig b/arch/arm/configs/bast_defconfig
index 2d985e9..35e3a99 100644
--- a/arch/arm/configs/bast_defconfig
+++ b/arch/arm/configs/bast_defconfig
@@ -561,7 +561,6 @@
 #
 CONFIG_SERIAL_S3C2410=y
 CONFIG_SERIAL_S3C2410_CONSOLE=y
-CONFIG_SERIAL_BAST_SIO=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
diff --git a/arch/arm/configs/s3c2410_defconfig b/arch/arm/configs/s3c2410_defconfig
index 98b72ff..96a794d 100644
--- a/arch/arm/configs/s3c2410_defconfig
+++ b/arch/arm/configs/s3c2410_defconfig
@@ -570,7 +570,6 @@
 #
 CONFIG_SERIAL_S3C2410=y
 CONFIG_SERIAL_S3C2410_CONSOLE=y
-CONFIG_SERIAL_BAST_SIO=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index ccb6bce..206778e 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -28,6 +28,7 @@
  *     14-Mar-2006 BJD  Updated for __iomem changes
  *     22-Jun-2006 BJD  Added DM9000 platform information
  *     28-Jun-2006 BJD  Moved pm functionality out to common code
+ *     17-Jul-2006 BJD  Changed to platform device for SuperIO 16550s
 */
 
 #include <linux/kernel.h>
@@ -64,6 +65,8 @@
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
 
+#include <linux/serial_8250.h>
+
 #include "clock.h"
 #include "devs.h"
 #include "cpu.h"
@@ -351,6 +354,39 @@
 	}
 };
 
+/* serial devices */
+
+#define SERIAL_BASE  (S3C2410_CS2 + BAST_PA_SUPERIO)
+#define SERIAL_FLAGS (UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SHARE_IRQ)
+#define SERIAL_CLK   (1843200)
+
+static struct plat_serial8250_port bast_sio_data[] = {
+	[0] = {
+		.mapbase	= SERIAL_BASE + 0x2f8,
+		.irq		= IRQ_PCSERIAL1,
+		.flags		= SERIAL_FLAGS,
+		.iotype		= UPIO_MEM,
+		.regshift	= 0,
+		.uartclk	= SERIAL_CLK,
+	},
+	[1] = {
+		.mapbase	= SERIAL_BASE + 0x3f8,
+		.irq		= IRQ_PCSERIAL2,
+		.flags		= SERIAL_FLAGS,
+		.iotype		= UPIO_MEM,
+		.regshift	= 0,
+		.uartclk	= SERIAL_CLK,
+	},
+	{ }
+};
+
+static struct platform_device bast_sio = {
+	.name			= "serial8250",
+	.id			= 0,
+	.dev			= {
+		.platform_data	= &bast_sio_data,
+	},
+};
 
 /* Standard BAST devices */
 
@@ -364,6 +400,7 @@
 	&s3c_device_nand,
 	&bast_device_nor,
 	&bast_device_dm9k,
+	&bast_sio,
 };
 
 static struct clk *bast_clocks[] = {
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index de54bdc..356f555 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -389,6 +389,9 @@
  *     - 10x cards have control registers in IO and/or memory space;
  *     - 20x cards have control registers in standard PCI configuration space.
  *
+ * There are also Quartet Serial cards which use Oxford Semiconductor
+ * 16954 quad UART PCI chip clocked by 18.432 MHz quartz.
+ *
  * Note: some SIIG cards are probed by the parport_serial object.
  */
 
@@ -1026,6 +1029,8 @@
 	pbn_b0_2_921600,
 	pbn_b0_4_921600,
 
+	pbn_b0_4_1152000,
+
 	pbn_b0_bt_1_115200,
 	pbn_b0_bt_2_115200,
 	pbn_b0_bt_8_115200,
@@ -1158,6 +1163,12 @@
 		.base_baud	= 921600,
 		.uart_offset	= 8,
 	},
+	[pbn_b0_4_1152000] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 4,
+		.base_baud	= 1152000,
+		.uart_offset	= 8,
+	},
 
 	[pbn_b0_bt_1_115200] = {
 		.flags		= FL_BASE0|FL_BASE_BARS,
@@ -1755,33 +1766,30 @@
 static void __devexit pciserial_remove_one(struct pci_dev *dev)
 {
 	struct serial_private *priv = pci_get_drvdata(dev);
+	struct pci_serial_quirk *quirk;
+	int i;
 
 	pci_set_drvdata(dev, NULL);
 
-	if (priv) {
-		struct pci_serial_quirk *quirk;
-		int i;
+	for (i = 0; i < priv->nr; i++)
+		serial8250_unregister_port(priv->line[i]);
 
-		for (i = 0; i < priv->nr; i++)
-			serial8250_unregister_port(priv->line[i]);
-
-		for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
-			if (priv->remapped_bar[i])
-				iounmap(priv->remapped_bar[i]);
-			priv->remapped_bar[i] = NULL;
-		}
-
-		/*
-		 * Find the exit quirks.
-		 */
-		quirk = find_quirk(dev);
-		if (quirk->exit)
-			quirk->exit(dev);
-
-		pci_disable_device(dev);
-
-		kfree(priv);
+	for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
+		if (priv->remapped_bar[i])
+			iounmap(priv->remapped_bar[i]);
+		priv->remapped_bar[i] = NULL;
 	}
+
+	/*
+	 * Find the exit quirks.
+	 */
+	quirk = find_quirk(dev);
+	if (quirk->exit)
+		quirk->exit(dev);
+
+	pci_disable_device(dev);
+
+	kfree(priv);
 }
 
 static int pciserial_suspend_one(struct pci_dev *dev, pm_message_t state)
@@ -1978,6 +1986,9 @@
 		PCI_VENDOR_ID_SPECIALIX, PCI_SUBDEVICE_ID_SPECIALIX_SPEED4, 0, 0,
 		pbn_b0_4_921600 },
 	{	PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
+		PCI_SUBVENDOR_ID_SIIG, PCI_SUBDEVICE_ID_SIIG_QUARTET_SERIAL, 0, 0,
+		pbn_b0_4_1152000 },
+	{	PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_b0_4_115200 },
 	{	PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI952,
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index e0d0a47..97034d3 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -306,13 +306,6 @@
 	  your boot loader about how to pass options to the kernel at
 	  boot time.)
 
-config SERIAL_BAST_SIO
-	bool "Support for BAST SuperIO serial ports"
-	depends on ARCH_BAST && SERIAL_8250=y
-	help
-	  Support for registerin the SuperIO chip on BAST board with
-	  the 8250/16550 uart code.
-
 config SERIAL_DZ
 	bool "DECstation DZ serial driver"
 	depends on MACH_DECSTATION && MIPS32
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 65bd438..11c7dc4 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -44,7 +44,6 @@
 obj-$(CONFIG_SERIAL_AU1X00) += au1x00_uart.o
 obj-$(CONFIG_SERIAL_DZ) += dz.o
 obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
-obj-$(CONFIG_SERIAL_BAST_SIO) += bast_sio.o
 obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o
 obj-$(CONFIG_SERIAL_CPM) += cpm_uart/
 obj-$(CONFIG_SERIAL_IMX) += imx.o
diff --git a/drivers/serial/bast_sio.c b/drivers/serial/bast_sio.c
deleted file mode 100644
index 2b48fab..0000000
--- a/drivers/serial/bast_sio.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/* linux/drivers/serial/bast_sio.c
- *
- * Copyright (c) 2004 Simtec Electronics
- *   Ben Dooks <ben@simtec.co.uk>
- *
- * http://www.simtec.co.uk/products/EB2410ITX/
- *
- * 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.
- *
- * Modifications:
- *	23-Sep-2004  BJD  Added copyright header
- *	23-Sep-2004  BJD  Added serial port remove code
-*/
-
-#include <linux/module.h>
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/tty.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/types.h>
-
-#include <asm/io.h>
-#include <asm/serial.h>
-#include <asm/mach-types.h>
-
-#include <asm/arch/map.h>
-#include <asm/arch/irqs.h>
-#include <asm/arch/bast-map.h>
-#include <asm/arch/bast-irq.h>
-
-static int __init serial_bast_register(unsigned long port, unsigned int irq)
-{
-	struct serial_struct serial_req;
-
-	serial_req.flags      = UPF_AUTOPROBE | UPF_SHARE_IRQ;
-	serial_req.baud_base  = BASE_BAUD;
-	serial_req.irq        = irq;
-	serial_req.io_type    = UPIO_MEM;
-	serial_req.iomap_base = port;
-	serial_req.iomem_base = ioremap(port, 0x10);
-	serial_req.iomem_reg_shift = 0;
-
-	return register_serial(&serial_req);
-}
-
-#define SERIAL_BASE (S3C2410_CS2 + BAST_PA_SUPERIO)
-
-static int port[2] = { -1, -1 };
-
-static int __init serial_bast_init(void)
-{
-	if (machine_is_bast()) {
-		port[0] = serial_bast_register(SERIAL_BASE + 0x2f8, IRQ_PCSERIAL1);
-		port[1] = serial_bast_register(SERIAL_BASE + 0x3f8, IRQ_PCSERIAL2);
-	}
-
-	return 0;
-}
-
-static void __exit serial_bast_exit(void)
-{
-	if (port[0] != -1)
-		unregister_serial(port[0]);
-	if (port[1] != -1)
-		unregister_serial(port[1]);
-}
-
-
-module_init(serial_bast_init);
-module_exit(serial_bast_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Ben Dooks, ben@simtec.co.uk");
-MODULE_DESCRIPTION("BAST Onboard Serial setup");
-
-
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 27348c2..9a28b31 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1872,6 +1872,7 @@
 #define PCI_DEVICE_ID_CBOARDS_DAS1602_16 0x0001
 
 #define PCI_VENDOR_ID_SIIG		0x131f
+#define PCI_SUBVENDOR_ID_SIIG		0x131f
 #define PCI_DEVICE_ID_SIIG_1S_10x_550	0x1000
 #define PCI_DEVICE_ID_SIIG_1S_10x_650	0x1001
 #define PCI_DEVICE_ID_SIIG_1S_10x_850	0x1002
@@ -1909,6 +1910,7 @@
 #define PCI_DEVICE_ID_SIIG_2S1P_20x_550	0x2060
 #define PCI_DEVICE_ID_SIIG_2S1P_20x_650	0x2061
 #define PCI_DEVICE_ID_SIIG_2S1P_20x_850	0x2062
+#define PCI_SUBDEVICE_ID_SIIG_QUARTET_SERIAL	0x2050
 
 #define PCI_VENDOR_ID_RADISYS		0x1331
 #define PCI_DEVICE_ID_RADISYS_ENP2611	0x0030