Pull release into acpica branch

34 files changed, 689 insertions, 396 deletions

diff --git a/drivers/serial/68328serial.c b/drivers/serial/68328serial.c
index 2efb317153c..67e9afa000c 100644
--- a/drivers/serial/68328serial.c
+++ b/drivers/serial/68328serial.c
@@ -34,6 +34,7 @@
 #include <linux/keyboard.h>
 #include <linux/init.h>
 #include <linux/pm.h>
+#include <linux/pm_legacy.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
 
@@ -1343,7 +1344,7 @@ static void show_serial_version(void)
 	printk("MC68328 serial driver version 1.00\n");
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_LEGACY
 /* Serial Power management
  *  The console (currently fixed at line 0) is a special case for power
  *  management because the kernel is so chatty. The console will be 
@@ -1393,7 +1394,7 @@ void startup_console(void)
 	struct m68k_serial *info = &m68k_soft[0];
 	startup(info);
 }
-#endif
+#endif /* CONFIG_PM_LEGACY */
 
 
 static struct tty_operations rs_ops = {
@@ -1486,7 +1487,7 @@ rs68328_init(void)
 			    IRQ_FLG_STD,
 			    "M68328_UART", NULL))
                 panic("Unable to attach 68328 serial interrupt\n");
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_LEGACY
 	    serial_pm[i] = pm_register(PM_SYS_DEV, PM_SYS_COM, serial_pm_callback);
 	    if (serial_pm[i])
 		    serial_pm[i]->data = info;
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 4d75cdfa0a0..d2bcd1f87cd 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -33,13 +33,14 @@
 #include <linux/sysrq.h>
 #include <linux/mca.h>
 #include <linux/delay.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/serial_reg.h>
 #include <linux/serial_core.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
+#include <linux/nmi.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -101,7 +102,7 @@ static unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
 #define SERIAL_PORT_DFNS
 #endif
 
-static struct old_serial_port old_serial_port[] = {
+static const struct old_serial_port old_serial_port[] = {
 	SERIAL_PORT_DFNS /* defined in asm/serial.h */
 };
 
@@ -251,9 +252,53 @@ static const struct serial8250_config uart_config[] = {
 	},
 };
 
+#ifdef CONFIG_SERIAL_8250_AU1X00
+
+/* Au1x00 UART hardware has a weird register layout */
+static const u8 au_io_in_map[] = {
+	[UART_RX]  = 0,
+	[UART_IER] = 2,
+	[UART_IIR] = 3,
+	[UART_LCR] = 5,
+	[UART_MCR] = 6,
+	[UART_LSR] = 7,
+	[UART_MSR] = 8,
+};
+
+static const u8 au_io_out_map[] = {
+	[UART_TX]  = 1,
+	[UART_IER] = 2,
+	[UART_FCR] = 4,
+	[UART_LCR] = 5,
+	[UART_MCR] = 6,
+};
+
+/* sane hardware needs no mapping */
+static inline int map_8250_in_reg(struct uart_8250_port *up, int offset)
+{
+	if (up->port.iotype != UPIO_AU)
+		return offset;
+	return au_io_in_map[offset];
+}
+
+static inline int map_8250_out_reg(struct uart_8250_port *up, int offset)
+{
+	if (up->port.iotype != UPIO_AU)
+		return offset;
+	return au_io_out_map[offset];
+}
+
+#else
+
+/* sane hardware needs no mapping */
+#define map_8250_in_reg(up, offset) (offset)
+#define map_8250_out_reg(up, offset) (offset)
+
+#endif
+
 static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset)
 {
-	offset <<= up->port.regshift;
+	offset = map_8250_in_reg(up, offset) << up->port.regshift;
 
 	switch (up->port.iotype) {
 	case UPIO_HUB6:
@@ -266,6 +311,11 @@ static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset)
 	case UPIO_MEM32:
 		return readl(up->port.membase + offset);
 
+#ifdef CONFIG_SERIAL_8250_AU1X00
+	case UPIO_AU:
+		return __raw_readl(up->port.membase + offset);
+#endif
+
 	default:
 		return inb(up->port.iobase + offset);
 	}
@@ -274,7 +324,7 @@ static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset)
 static _INLINE_ void
 serial_out(struct uart_8250_port *up, int offset, int value)
 {
-	offset <<= up->port.regshift;
+	offset = map_8250_out_reg(up, offset) << up->port.regshift;
 
 	switch (up->port.iotype) {
 	case UPIO_HUB6:
@@ -290,6 +340,12 @@ serial_out(struct uart_8250_port *up, int offset, int value)
 		writel(value, up->port.membase + offset);
 		break;
 
+#ifdef CONFIG_SERIAL_8250_AU1X00
+	case UPIO_AU:
+		__raw_writel(value, up->port.membase + offset);
+		break;
+#endif
+
 	default:
 		outb(value, up->port.iobase + offset);
 	}
@@ -910,6 +966,13 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 		}
 	}
 #endif
+
+#ifdef CONFIG_SERIAL_8250_AU1X00
+	/* if access method is AU, it is a 16550 with a quirk */
+	if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
+		up->bugs |= UART_BUG_NOMSR;
+#endif
+
 	serial_outp(up, UART_LCR, save_lcr);
 
 	if (up->capabilities != uart_config[up->port.type].flags) {
@@ -936,7 +999,10 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 	serial_outp(up, UART_MCR, save_mcr);
 	serial8250_clear_fifos(up);
 	(void)serial_in(up, UART_RX);
-	serial_outp(up, UART_IER, 0);
+	if (up->capabilities & UART_CAP_UUE)
+		serial_outp(up, UART_IER, UART_IER_UUE);
+	else
+		serial_outp(up, UART_IER, 0);
 
  out:	
 	spin_unlock_irqrestore(&up->port.lock, flags);
@@ -1057,6 +1123,10 @@ static void serial8250_enable_ms(struct uart_port *port)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
+	/* no MSR capabilities */
+	if (up->bugs & UART_BUG_NOMSR)
+		return;
+
 	up->ier |= UART_IER_MSI;
 	serial_out(up, UART_IER, up->ier);
 }
@@ -1774,7 +1844,8 @@ serial8250_set_termios(struct uart_port *port, struct termios *termios,
 	 * CTS flow control flag and modem status interrupts
 	 */
 	up->ier &= ~UART_IER_MSI;
-	if (UART_ENABLE_MS(&up->port, termios->c_cflag))
+	if (!(up->bugs & UART_BUG_NOMSR) &&
+			UART_ENABLE_MS(&up->port, termios->c_cflag))
 		up->ier |= UART_IER_MSI;
 	if (up->capabilities & UART_CAP_UUE)
 		up->ier |= UART_IER_UUE | UART_IER_RTOIE;
@@ -2141,6 +2212,8 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 	unsigned int ier;
 	int i;
 
+	touch_nmi_watchdog();
+
 	/*
 	 *	First save the UER then disable the interrupts
 	 */
@@ -2311,9 +2384,9 @@ void serial8250_resume_port(int line)
  * list is terminated with a zero flags entry, which means we expect
  * all entries to have at least UPF_BOOT_AUTOCONF set.
  */
-static int __devinit serial8250_probe(struct device *dev)
+static int __devinit serial8250_probe(struct platform_device *dev)
 {
-	struct plat_serial8250_port *p = dev->platform_data;
+	struct plat_serial8250_port *p = dev->dev.platform_data;
 	struct uart_port port;
 	int ret, i;
 
@@ -2329,12 +2402,12 @@ static int __devinit serial8250_probe(struct device *dev)
 		port.flags	= p->flags;
 		port.mapbase	= p->mapbase;
 		port.hub6	= p->hub6;
-		port.dev	= dev;
+		port.dev	= &dev->dev;
 		if (share_irqs)
 			port.flags |= UPF_SHARE_IRQ;
 		ret = serial8250_register_port(&port);
 		if (ret < 0) {
-			dev_err(dev, "unable to register port at index %d "
+			dev_err(&dev->dev, "unable to register port at index %d "
 				"(IO%lx MEM%lx IRQ%d): %d\n", i,
 				p->iobase, p->mapbase, p->irq, ret);
 		}
@@ -2345,60 +2418,55 @@ static int __devinit serial8250_probe(struct device *dev)
 /*
  * Remove serial ports registered against a platform device.
  */
-static int __devexit serial8250_remove(struct device *dev)
+static int __devexit serial8250_remove(struct platform_device *dev)
 {
 	int i;
 
 	for (i = 0; i < UART_NR; i++) {
 		struct uart_8250_port *up = &serial8250_ports[i];
 
-		if (up->port.dev == dev)
+		if (up->port.dev == &dev->dev)
 			serial8250_unregister_port(i);
 	}
 	return 0;
 }
 
-static int serial8250_suspend(struct device *dev, pm_message_t state, u32 level)
+static int serial8250_suspend(struct platform_device *dev, pm_message_t state)
 {
 	int i;
 
-	if (level != SUSPEND_DISABLE)
-		return 0;
-
 	for (i = 0; i < UART_NR; i++) {
 		struct uart_8250_port *up = &serial8250_ports[i];
 
-		if (up->port.type != PORT_UNKNOWN && up->port.dev == dev)
+		if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
 			uart_suspend_port(&serial8250_reg, &up->port);
 	}
 
 	return 0;
 }
 
-static int serial8250_resume(struct device *dev, u32 level)
+static int serial8250_resume(struct platform_device *dev)
 {
 	int i;
 
-	if (level != RESUME_ENABLE)
-		return 0;
-
 	for (i = 0; i < UART_NR; i++) {
 		struct uart_8250_port *up = &serial8250_ports[i];
 
-		if (up->port.type != PORT_UNKNOWN && up->port.dev == dev)
+		if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
 			uart_resume_port(&serial8250_reg, &up->port);
 	}
 
 	return 0;
 }
 
-static struct device_driver serial8250_isa_driver = {
-	.name		= "serial8250",
-	.bus		= &platform_bus_type,
+static struct platform_driver serial8250_isa_driver = {
 	.probe		= serial8250_probe,
 	.remove		= __devexit_p(serial8250_remove),
 	.suspend	= serial8250_suspend,
 	.resume		= serial8250_resume,
+	.driver		= {
+		.name	= "serial8250",
+	},
 };
 
 /*
@@ -2544,7 +2612,7 @@ static int __init serial8250_init(void)
 
 	serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev);
 
-	ret = driver_register(&serial8250_isa_driver);
+	ret = platform_driver_register(&serial8250_isa_driver);
 	if (ret == 0)
 		goto out;
 
@@ -2566,7 +2634,7 @@ static void __exit serial8250_exit(void)
 	 */
 	serial8250_isa_devs = NULL;
 
-	driver_unregister(&serial8250_isa_driver);
+	platform_driver_unregister(&serial8250_isa_driver);
 	platform_device_unregister(isa_dev);
 
 	uart_unregister_driver(&serial8250_reg);
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
index b1b459efda5..a607b98016d 100644
--- a/drivers/serial/8250.h
+++ b/drivers/serial/8250.h
@@ -49,6 +49,7 @@ struct serial8250_config {
 
 #define UART_BUG_QUOT	(1 << 0)	/* UART has buggy quot LSB */
 #define UART_BUG_TXEN	(1 << 1)	/* UART has buggy TX IIR status */
+#define UART_BUG_NOMSR	(1 << 2)	/* UART has buggy MSR status bits (Au1x00) */
 
 #if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486))
 #define _INLINE_ inline
diff --git a/drivers/serial/8250_au1x00.c b/drivers/serial/8250_au1x00.c
new file mode 100644
index 00000000000..06ae8fbcc94
--- /dev/null
+++ b/drivers/serial/8250_au1x00.c
@@ -0,0 +1,102 @@
+/*
+ * Serial Device Initialisation for Au1x00
+ *
+ * (C) Copyright Embedded Alley Solutions, Inc 2005
+ * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
+ *
+ * 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.
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/serial_core.h>
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <linux/serial_8250.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+#include "8250.h"
+
+#define PORT(_base, _irq)				\
+	{						\
+		.iobase		= _base,		\
+		.membase	= (void __iomem *)_base,\
+		.mapbase	= _base,		\
+		.irq		= _irq,			\
+		.uartclk	= 0,	/* filled */	\
+		.regshift	= 2,			\
+		.iotype		= UPIO_AU,		\
+		.flags		= UPF_SKIP_TEST | 	\
+				  UPF_IOREMAP,		\
+	}
+
+static struct plat_serial8250_port au1x00_data[] = {
+#if defined(CONFIG_SOC_AU1000)
+	PORT(UART0_ADDR, AU1000_UART0_INT),
+	PORT(UART1_ADDR, AU1000_UART1_INT),
+	PORT(UART2_ADDR, AU1000_UART2_INT),
+	PORT(UART3_ADDR, AU1000_UART3_INT),
+#elif defined(CONFIG_SOC_AU1500)
+	PORT(UART0_ADDR, AU1500_UART0_INT),
+	PORT(UART3_ADDR, AU1500_UART3_INT),
+#elif defined(CONFIG_SOC_AU1100)
+	PORT(UART0_ADDR, AU1100_UART0_INT),
+	PORT(UART1_ADDR, AU1100_UART1_INT),
+	PORT(UART2_ADDR, AU1100_UART2_INT),
+	PORT(UART3_ADDR, AU1100_UART3_INT),
+#elif defined(CONFIG_SOC_AU1550)
+	PORT(UART0_ADDR, AU1550_UART0_INT),
+	PORT(UART1_ADDR, AU1550_UART1_INT),
+	PORT(UART2_ADDR, AU1550_UART2_INT),
+	PORT(UART3_ADDR, AU1550_UART3_INT),
+#elif defined(CONFIG_SOC_AU1200)
+	PORT(UART0_ADDR, AU1200_UART0_INT),
+	PORT(UART1_ADDR, AU1200_UART1_INT),
+#endif
+	{ },
+};
+
+static struct platform_device au1x00_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_AU1X00,
+	.dev			= {
+		.platform_data	= au1x00_data,
+	},
+};
+
+static int __init au1x00_init(void)
+{
+	int i;
+	unsigned int uartclk;
+
+	/* get uart clock */
+	uartclk = get_au1x00_uart_baud_base() * 16;
+
+	/* fill up uartclk */
+	for (i = 0; au1x00_data[i].flags ; i++)
+		au1x00_data[i].uartclk = uartclk;
+
+	return platform_device_register(&au1x00_device);
+}
+
+/* XXX: Yes, I know this doesn't yet work. */
+static void __exit au1x00_exit(void)
+{
+	platform_device_unregister(&au1x00_device);
+}
+
+module_init(au1x00_init);
+module_exit(au1x00_exit);
+
+MODULE_AUTHOR("Pantelis Antoniou <pantelis@embeddedalley.com>");
+MODULE_DESCRIPTION("8250 serial probe module for Au1x000 cards");
+MODULE_LICENSE("GPL");
diff --git a/drivers/serial/8250_early.c b/drivers/serial/8250_early.c
index b7a5dd71022..59ba5d993b4 100644
--- a/drivers/serial/8250_early.c
+++ b/drivers/serial/8250_early.c
@@ -164,7 +164,7 @@ static int __init parse_options(struct early_uart_device *device, char *options)
 
 	if ((options = strchr(options, ','))) {
 		options++;
-		device->baud = simple_strtoul(options, 0, 0);
+		device->baud = simple_strtoul(options, NULL, 0);
 		length = min(strcspn(options, " "), sizeof(device->options));
 		strncpy(device->options, options, length);
 	} else {
diff --git a/drivers/serial/8250_gsc.c b/drivers/serial/8250_gsc.c
index 431aa5761a7..8b4947933d9 100644
--- a/drivers/serial/8250_gsc.c
+++ b/drivers/serial/8250_gsc.c
@@ -29,7 +29,6 @@
 static int __init 
 serial_init_chip(struct parisc_device *dev)
 {
-	static int serial_line_nr;
 	struct uart_port port;
 	unsigned long address;
 	int err;
@@ -42,12 +41,13 @@ serial_init_chip(struct parisc_device *dev)
 		 */
 		if (parisc_parent(dev)->id.hw_type != HPHW_IOA) {
 			printk(KERN_INFO "Serial: device 0x%lx not configured.\n"
-				"Enable support for Wax, Lasi, Asp or Dino.\n", dev->hpa);
+				"Enable support for Wax, Lasi, Asp or Dino.\n",
+				dev->hpa.start);
 		}
 		return -ENODEV;
 	}
 
-	address = dev->hpa;
+	address = dev->hpa.start;
 	if (dev->id.sversion != 0x8d) {
 		address += 0x800;
 	}
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 0e21f583690..8d92adfbb8b 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -152,6 +152,7 @@ static int __devinit pci_hp_diva_init(struct pci_dev *dev)
 		rc = 4;
 		break;
 	case PCI_DEVICE_ID_HP_DIVA_POWERBAR:
+	case PCI_DEVICE_ID_HP_DIVA_HURRICANE:
 		rc = 1;
 		break;
 	}
@@ -226,8 +227,10 @@ static int __devinit pci_plx9050_init(struct pci_dev *dev)
 	}
 
 	irq_config = 0x41;
-	if (dev->vendor == PCI_VENDOR_ID_PANACOM)
+	if (dev->vendor == PCI_VENDOR_ID_PANACOM ||
+	    dev->subsystem_vendor == PCI_SUBVENDOR_ID_EXSYS) {
 		irq_config = 0x43;
+	}
 	if ((dev->vendor == PCI_VENDOR_ID_PLX) &&
 	    (dev->device == PCI_DEVICE_ID_PLX_ROMULUS)) {
 		/*
@@ -465,7 +468,7 @@ static unsigned short timedia_eight_port[] = {
 	0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0
 };
 
-static struct timedia_struct {
+static const struct timedia_struct {
 	int num;
 	unsigned short *ids;
 } timedia_data[] = {
@@ -664,6 +667,15 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
 	{
 		.vendor		= PCI_VENDOR_ID_PLX,
 		.device		= PCI_DEVICE_ID_PLX_9050,
+		.subvendor	= PCI_SUBVENDOR_ID_EXSYS,
+		.subdevice	= PCI_SUBDEVICE_ID_EXSYS_4055,
+		.init		= pci_plx9050_init,
+		.setup		= pci_default_setup,
+		.exit		= __devexit_p(pci_plx9050_exit),
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_PLX,
+		.device		= PCI_DEVICE_ID_PLX_9050,
 		.subvendor	= PCI_SUBVENDOR_ID_KEYSPAN,
 		.subdevice	= PCI_SUBDEVICE_ID_KEYSPAN_SX2,
 		.init		= pci_plx9050_init,
@@ -927,6 +939,7 @@ enum pci_board_num_t {
 	pbn_panacom,
 	pbn_panacom2,
 	pbn_panacom4,
+	pbn_exsys_4055,
 	pbn_plx_romulus,
 	pbn_oxsemi,
 	pbn_intel_i960,
@@ -1292,6 +1305,13 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 		.reg_shift	= 7,
 	},
 
+	[pbn_exsys_4055] = {
+		.flags		= FL_BASE2,
+		.num_ports	= 4,
+		.base_baud	= 115200,
+		.uart_offset	= 8,
+	},
+
 	/* I think this entry is broken - the first_offset looks wrong --rmk */
 	[pbn_plx_romulus] = {
 		.flags		= FL_BASE2,
@@ -1853,6 +1873,10 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_SUBVENDOR_ID_CHASE_PCIRAS,
 		PCI_SUBDEVICE_ID_CHASE_PCIRAS8, 0, 0, 
 		pbn_b2_8_460800 },
+	{	PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+		PCI_SUBVENDOR_ID_EXSYS,
+		PCI_SUBDEVICE_ID_EXSYS_4055, 0, 0,
+		pbn_exsys_4055 },
 	/*
 	 * Megawolf Romulus PCI Serial Card, from Mike Hudson
 	 * (Exoray@isys.ca)
diff --git a/drivers/serial/8250_pnp.c b/drivers/serial/8250_pnp.c
index 6b321e82caf..b79ed0665d5 100644
--- a/drivers/serial/8250_pnp.c
+++ b/drivers/serial/8250_pnp.c
@@ -272,8 +272,12 @@ static const struct pnp_device_id pnp_dev_table[] = {
 	{	"SUP1421",		0	},
 	/* SupraExpress 33.6 Data/Fax PnP modem */
 	{	"SUP1590",		0	},
+	/* SupraExpress 336i Sp ASVD */
+	{	"SUP1620",		0	},
 	/* SupraExpress 33.6 Data/Fax PnP modem */
 	{	"SUP1760",		0	},
+	/* SupraExpress 56i Sp Intl */
+	{	"SUP2171",		0	},
 	/* Phoebe Micro */
 	/* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */
 	{	"TEX0011",		0	},
@@ -319,6 +323,8 @@ static const struct pnp_device_id pnp_dev_table[] = {
 	{	"USR9180",		0	},
 	/* U.S. Robotics 56K Voice INT PnP*/
 	{	"USR9190",		0	},
+	/* HP Compaq Tablet PC tc1100 Wacom tablet */
+	{	"WACF005",		0	},
 	/* Rockwell's (PORALiNK) 33600 INT PNP */
 	{	"WCI0003",		0	},
 	/* Unkown PnP modems */
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index b745a1b9e83..ad47c1b84c3 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -207,6 +207,14 @@ config SERIAL_8250_ACORN
 	  system, say Y to this option.  The driver can handle 1, 2, or 3 port
 	  cards.  If unsure, say N.
 
+config SERIAL_8250_AU1X00
+	bool "AU1X00 serial port support"
+	depends on SERIAL_8250 != n && SOC_AU1X00
+	help
+	  If you have an Au1x00 board and want to use the serial port, say Y
+	  to this option.  The driver can handle 1 or 2 serial ports.
+	  If unsure, say N.
+
 comment "Non-8250 serial port support"
 
 config SERIAL_AMBA_PL010
@@ -499,7 +507,7 @@ config SERIAL_SUNSU_CONSOLE
 
 config SERIAL_MUX
 	tristate "Serial MUX support"
-	depends on PARISC
+	depends on GSC
 	select SERIAL_CORE
 	default y
 	---help---
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 11c7dc483f9..d7c7c7180e3 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
 obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
 obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
 obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
+obj-$(CONFIG_SERIAL_8250_AU1X00) += 8250_au1x00.o
 obj-$(CONFIG_SERIAL_AMBA_PL010) += amba-pl010.o
 obj-$(CONFIG_SERIAL_AMBA_PL011) += amba-pl011.o
 obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 679e678c7e6..ddd0307fece 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -50,6 +50,7 @@
 
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <asm/hardware.h>
 #include <asm/hardware/amba.h>
 #include <asm/hardware/amba_serial.h>
 
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 1ff629c7475..89d7bd3eaee 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -49,7 +49,7 @@
 #include <linux/serial.h>
 
 #include <asm/io.h>
-#include <asm/irq.h>
+#include <asm/sizes.h>
 #include <asm/hardware/amba.h>
 #include <asm/hardware/clock.h>
 #include <asm/hardware/amba_serial.h>
@@ -62,7 +62,8 @@
 
 #define AMBA_ISR_PASS_LIMIT	256
 
-#define UART_DUMMY_RSR_RX	256
+#define UART_DR_ERROR		(UART011_DR_OE|UART011_DR_BE|UART011_DR_PE|UART011_DR_FE)
+#define UART_DUMMY_DR_RX	(1 << 16)
 
 /*
  * We wrap our port structure around the generic uart_port.
@@ -115,7 +116,7 @@ pl011_rx_chars(struct uart_amba_port *uap)
 #endif
 {
 	struct tty_struct *tty = uap->port.info->tty;
-	unsigned int status, ch, flag, rsr, max_count = 256;
+	unsigned int status, ch, flag, max_count = 256;
 
 	status = readw(uap->port.membase + UART01x_FR);
 	while ((status & UART01x_FR_RXFE) == 0 && max_count--) {
@@ -128,7 +129,7 @@ pl011_rx_chars(struct uart_amba_port *uap)
 			 */
 		}
 
-		ch = readw(uap->port.membase + UART01x_DR);
+		ch = readw(uap->port.membase + UART01x_DR) | UART_DUMMY_DR_RX;
 		flag = TTY_NORMAL;
 		uap->port.icount.rx++;
 
@@ -136,34 +137,33 @@ pl011_rx_chars(struct uart_amba_port *uap)
 		 * Note that the error handling code is
 		 * out of the main execution path
 		 */
-		rsr = readw(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
-		if (unlikely(rsr & UART01x_RSR_ANY)) {
-			if (rsr & UART01x_RSR_BE) {
-				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
+		if (unlikely(ch & UART_DR_ERROR)) {
+			if (ch & UART011_DR_BE) {
+				ch &= ~(UART011_DR_FE | UART011_DR_PE);
 				uap->port.icount.brk++;
 				if (uart_handle_break(&uap->port))
 					goto ignore_char;
-			} else if (rsr & UART01x_RSR_PE)
+			} else if (ch & UART011_DR_PE)
 				uap->port.icount.parity++;
-			else if (rsr & UART01x_RSR_FE)
+			else if (ch & UART011_DR_FE)
 				uap->port.icount.frame++;
-			if (rsr & UART01x_RSR_OE)
+			if (ch & UART011_DR_OE)
 				uap->port.icount.overrun++;
 
-			rsr &= uap->port.read_status_mask;
+			ch &= uap->port.read_status_mask;
 
-			if (rsr & UART01x_RSR_BE)
+			if (ch & UART011_DR_BE)
 				flag = TTY_BREAK;
-			else if (rsr & UART01x_RSR_PE)
+			else if (ch & UART011_DR_PE)
 				flag = TTY_PARITY;
-			else if (rsr & UART01x_RSR_FE)
+			else if (ch & UART011_DR_FE)
 				flag = TTY_FRAME;
 		}
 
 		if (uart_handle_sysrq_char(&uap->port, ch, regs))
 			goto ignore_char;
 
-		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+		uart_insert_char(&uap->port, ch, UART011_DR_OE, ch, flag);
 
 	ignore_char:
 		status = readw(uap->port.membase + UART01x_FR);
@@ -475,33 +475,33 @@ pl011_set_termios(struct uart_port *port, struct termios *termios,
 	 */
 	uart_update_timeout(port, termios->c_cflag, baud);
 
-	port->read_status_mask = UART01x_RSR_OE;
+	port->read_status_mask = UART011_DR_OE | 255;
 	if (termios->c_iflag & INPCK)
-		port->read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
+		port->read_status_mask |= UART011_DR_FE | UART011_DR_PE;
 	if (termios->c_iflag & (BRKINT | PARMRK))
-		port->read_status_mask |= UART01x_RSR_BE;
+		port->read_status_mask |= UART011_DR_BE;
 
 	/*
 	 * Characters to ignore
 	 */
 	port->ignore_status_mask = 0;
 	if (termios->c_iflag & IGNPAR)
-		port->ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
+		port->ignore_status_mask |= UART011_DR_FE | UART011_DR_PE;
 	if (termios->c_iflag & IGNBRK) {
-		port->ignore_status_mask |= UART01x_RSR_BE;
+		port->ignore_status_mask |= UART011_DR_BE;
 		/*
 		 * If we're ignoring parity and break indicators,
 		 * ignore overruns too (for real raw support).
 		 */
 		if (termios->c_iflag & IGNPAR)
-			port->ignore_status_mask |= UART01x_RSR_OE;
+			port->ignore_status_mask |= UART011_DR_OE;
 	}
 
 	/*
 	 * Ignore all characters if CREAD is not set.
 	 */
 	if ((termios->c_cflag & CREAD) == 0)
-		port->ignore_status_mask |= UART_DUMMY_RSR_RX;
+		port->ignore_status_mask |= UART_DUMMY_DR_RX;
 
 	if (UART_ENABLE_MS(port, termios->c_cflag))
 		pl011_enable_ms(port);
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index 78c1f36ad9b..87ef368384f 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -98,7 +98,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
 {
 	struct uart_port *port = dev_id;
 	struct tty_struct *tty = port->info->tty;
-	unsigned int status, ch, flg, ignored = 0;
+	unsigned int status, ch, flg;
 
 	status = clps_readl(SYSFLG(port));
 	while (!(status & SYSFLG_URXFE)) {
diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index 25825f2aba2..987d22b53c2 100644
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/