Merge branch 'master' into for-next

Sync with Linus' tree to be able to apply patch to a newer
code (namely drivers/gpu/drm/gma500/psb_intel_lvds.c)

68 files changed, 3950 insertions, 2355 deletions

diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index cea56033b34c..a09ce3ef5d74 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -417,7 +417,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
 				__FILE__,__LINE__,tbuf,tbuf->count);
 			
 		/* Send the next block of data to device */
-		tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
+		set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
 		actual = tty->ops->write(tty, tbuf->buf, tbuf->count);
 
 		/* rollback was possible and has been done */
@@ -459,7 +459,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
 	}
 	
 	if (!tbuf)
-		tty->flags  &= ~(1 << TTY_DO_WRITE_WAKEUP);
+		clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
 	
 	/* Clear the re-entry flag */
 	spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
@@ -491,7 +491,7 @@ static void n_hdlc_tty_wakeup(struct tty_struct *tty)
 		return;
 
 	if (tty != n_hdlc->tty) {
-		tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+		clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
 		return;
 	}
 
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 39d6ab6551e0..d2256d08ee7e 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -61,7 +61,7 @@
  * controlling the space in the read buffer.
  */
 #define TTY_THRESHOLD_THROTTLE		128 /* now based on remaining room */
-#define TTY_THRESHOLD_UNTHROTTLE 	128
+#define TTY_THRESHOLD_UNTHROTTLE	128
 
 /*
  * Special byte codes used in the echo buffer to represent operations
@@ -405,7 +405,7 @@ static ssize_t process_output_block(struct tty_struct *tty,
 				    const unsigned char *buf, unsigned int nr)
 {
 	int	space;
-	int 	i;
+	int	i;
 	const unsigned char *cp;
 
 	mutex_lock(&tty->output_lock);
@@ -1607,7 +1607,7 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
 }
 
 /**
- * 	copy_from_read_buf	-	copy read data directly
+ *	copy_from_read_buf	-	copy read data directly
  *	@tty: terminal device
  *	@b: user data
  *	@nr: size of data
@@ -1909,7 +1909,7 @@ do_it_again:
 		if (nr)
 			clear_bit(TTY_PUSH, &tty->flags);
 	} else if (test_and_clear_bit(TTY_PUSH, &tty->flags))
-		 goto do_it_again;
+		goto do_it_again;
 
 	n_tty_set_room(tty);
 	return retval;
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index e18604b3fc7d..d8653ab6f498 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -446,19 +446,8 @@ static inline void legacy_pty_init(void) { }
 int pty_limit = NR_UNIX98_PTY_DEFAULT;
 static int pty_limit_min;
 static int pty_limit_max = NR_UNIX98_PTY_MAX;
-static int tty_count;
 static int pty_count;
 
-static inline void pty_inc_count(void)
-{
-	pty_count = (++tty_count) / 2;
-}
-
-static inline void pty_dec_count(void)
-{
-	pty_count = (--tty_count) / 2;
-}
-
 static struct cdev ptmx_cdev;
 
 static struct ctl_table pty_table[] = {
@@ -600,8 +589,7 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty)
 	 */
 	tty_driver_kref_get(driver);
 	tty->count++;
-	pty_inc_count(); /* tty */
-	pty_inc_count(); /* tty->link */
+	pty_count++;
 	return 0;
 err_free_mem:
 	deinitialize_tty_struct(o_tty);
@@ -613,15 +601,19 @@ err_free_tty:
 	return -ENOMEM;
 }
 
-static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
+static void ptm_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
+{
+	pty_count--;
+}
+
+static void pts_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
 {
-	pty_dec_count();
 }
 
 static const struct tty_operations ptm_unix98_ops = {
 	.lookup = ptm_unix98_lookup,
 	.install = pty_unix98_install,
-	.remove = pty_unix98_remove,
+	.remove = ptm_unix98_remove,
 	.open = pty_open,
 	.close = pty_close,
 	.write = pty_write,
@@ -638,7 +630,7 @@ static const struct tty_operations ptm_unix98_ops = {
 static const struct tty_operations pty_unix98_ops = {
 	.lookup = pts_unix98_lookup,
 	.install = pty_unix98_install,
-	.remove = pty_unix98_remove,
+	.remove = pts_unix98_remove,
 	.open = pty_open,
 	.close = pty_close,
 	.write = pty_write,
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 6a1241c7f841..de88aa5566e5 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -118,7 +118,7 @@ static unsigned long board2;
 static unsigned long board3;
 static unsigned long board4;
 static unsigned long controller;
-static int support_low_speed;
+static bool support_low_speed;
 static unsigned long modem1;
 static unsigned long modem2;
 static unsigned long modem3;
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250/8250.c
index eeadf1b8e093..9f50c4e3c2be 100644
--- a/drivers/tty/serial/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -129,32 +129,6 @@ static unsigned long probe_rsa[PORT_RSA_MAX];
 static unsigned int probe_rsa_count;
 #endif /* CONFIG_SERIAL_8250_RSA  */
 
-struct uart_8250_port {
-	struct uart_port	port;
-	struct timer_list	timer;		/* "no irq" timer */
-	struct list_head	list;		/* ports on this IRQ */
-	unsigned short		capabilities;	/* port capabilities */
-	unsigned short		bugs;		/* port bugs */
-	unsigned int		tx_loadsz;	/* transmit fifo load size */
-	unsigned char		acr;
-	unsigned char		ier;
-	unsigned char		lcr;
-	unsigned char		mcr;
-	unsigned char		mcr_mask;	/* mask of user bits */
-	unsigned char		mcr_force;	/* mask of forced bits */
-	unsigned char		cur_iotype;	/* Running I/O type */
-
-	/*
-	 * Some bits in registers are cleared on a read, so they must
-	 * be saved whenever the register is read but the bits will not
-	 * be immediately processed.
-	 */
-#define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS
-	unsigned char		lsr_saved_flags;
-#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
-	unsigned char		msr_saved_flags;
-};
-
 struct irq_info {
 	struct			hlist_node node;
 	int			irq;
@@ -1326,8 +1300,6 @@ static void serial8250_stop_tx(struct uart_port *port)
 	}
 }
 
-static void transmit_chars(struct uart_8250_port *up);
-
 static void serial8250_start_tx(struct uart_port *port)
 {
 	struct uart_8250_port *up =
@@ -1344,7 +1316,7 @@ static void serial8250_start_tx(struct uart_port *port)
 			if ((up->port.type == PORT_RM9000) ?
 				(lsr & UART_LSR_THRE) :
 				(lsr & UART_LSR_TEMT))
-				transmit_chars(up);
+				serial8250_tx_chars(up);
 		}
 	}
 
@@ -1401,11 +1373,16 @@ static void clear_rx_fifo(struct uart_8250_port *up)
 	} while (1);
 }
 
-static void
-receive_chars(struct uart_8250_port *up, unsigned int *status)
+/*
+ * serial8250_rx_chars: processes according to the passed in LSR
+ * value, and returns the remaining LSR bits not handled
+ * by this Rx routine.
+ */
+unsigned char
+serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
 {
 	struct tty_struct *tty = up->port.state->port.tty;
-	unsigned char ch, lsr = *status;
+	unsigned char ch;
 	int max_count = 256;
 	char flag;
 
@@ -1481,10 +1458,11 @@ ignore_char:
 	spin_unlock(&up->port.lock);
 	tty_flip_buffer_push(tty);
 	spin_lock(&up->port.lock);
-	*status = lsr;
+	return lsr;
 }
+EXPORT_SYMBOL_GPL(serial8250_rx_chars);
 
-static void transmit_chars(struct uart_8250_port *up)
+void serial8250_tx_chars(struct uart_8250_port *up)
 {
 	struct circ_buf *xmit = &up->port.state->xmit;
 	int count;
@@ -1521,8 +1499,9 @@ static void transmit_chars(struct uart_8250_port *up)
 	if (uart_circ_empty(xmit))
 		__stop_tx(up);
 }
+EXPORT_SYMBOL_GPL(serial8250_tx_chars);
 
-static unsigned int check_modem_status(struct uart_8250_port *up)
+unsigned int serial8250_modem_status(struct uart_8250_port *up)
 {
 	unsigned int status = serial_in(up, UART_MSR);
 
@@ -1544,14 +1523,20 @@ static unsigned int check_modem_status(struct uart_8250_port *up)
 
 	return status;
 }
+EXPORT_SYMBOL_GPL(serial8250_modem_status);
 
 /*
  * This handles the interrupt from one port.
  */
-static void serial8250_handle_port(struct uart_8250_port *up)
+int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
 {
-	unsigned int status;
+	unsigned char status;
 	unsigned long flags;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
+
+	if (iir & UART_IIR_NO_INT)
+		return 0;
 
 	spin_lock_irqsave(&up->port.lock, flags);
 
@@ -1560,25 +1545,13 @@ static void serial8250_handle_port(struct uart_8250_port *up)
 	DEBUG_INTR("status = %x...", status);
 
 	if (status & (UART_LSR_DR | UART_LSR_BI))
-		receive_chars(up, &status);
-	check_modem_status(up);
+		status = serial8250_rx_chars(up, status);
+	serial8250_modem_status(up);
 	if (status & UART_LSR_THRE)
-		transmit_chars(up);
+		serial8250_tx_chars(up);
 
 	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
-{
-	struct uart_8250_port *up =
-		container_of(port, struct uart_8250_port, port);
-
-	if (!(iir & UART_IIR_NO_INT)) {
-		serial8250_handle_port(up);
-		return 1;
-	}
-
-	return 0;
+	return 1;
 }
 EXPORT_SYMBOL_GPL(serial8250_handle_irq);
 
@@ -1619,11 +1592,13 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id)
 	do {
 		struct uart_8250_port *up;
 		struct uart_port *port;
+		bool skip;
 
 		up = list_entry(l, struct uart_8250_port, list);
 		port = &up->port;
+		skip = pass_counter && up->port.flags & UPF_IIR_ONCE;
 
-		if (port->handle_irq(port)) {
+		if (!skip && port->handle_irq(port)) {
 			handled = 1;
 			end = NULL;
 		} else if (end == NULL)
@@ -1758,11 +1733,8 @@ static void serial_unlink_irq_chain(struct uart_8250_port *up)
 static void serial8250_timeout(unsigned long data)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)data;
-	unsigned int iir;
 
-	iir = serial_in(up, UART_IIR);
-	if (!(iir & UART_IIR_NO_INT))
-		serial8250_handle_port(up);
+	up->port.handle_irq(&up->port);
 	mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port));
 }
 
@@ -1801,7 +1773,7 @@ static void serial8250_backup_timeout(unsigned long data)
 	}
 
 	if (!(iir & UART_IIR_NO_INT))
-		transmit_chars(up);
+		serial8250_tx_chars(up);
 
 	if (is_real_interrupt(up->port.irq))
 		serial_out(up, UART_IER, ier);
@@ -1835,7 +1807,7 @@ static unsigned int serial8250_get_mctrl(struct uart_port *port)
 	unsigned int status;
 	unsigned int ret;
 
-	status = check_modem_status(up);
+	status = serial8250_modem_status(up);
 
 	ret = 0;
 	if (status & UART_MSR_DCD)
@@ -2000,7 +1972,7 @@ static int serial8250_startup(struct uart_port *port)
 		serial_outp(up, UART_IER, 0);
 		serial_outp(up, UART_LCR, 0);
 		serial_icr_write(up, UART_CSR, 0); /* Reset the UART */
-		serial_outp(up, UART_LCR, 0xBF);
+		serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_outp(up, UART_EFR, UART_EFR_ECB);
 		serial_outp(up, UART_LCR, 0);
 	}
@@ -2848,7 +2820,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 
 	local_irq_save(flags);
 	if (up->port.sysrq) {
-		/* serial8250_handle_port() already took the lock */
+		/* serial8250_handle_irq() already took the lock */
 		locked = 0;
 	} else if (oops_in_progress) {
 		locked = spin_trylock(&up->port.lock);
@@ -2882,7 +2854,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 	 *	while processing with interrupts off.
 	 */
 	if (up->msr_saved_flags)
-		check_modem_status(up);
+		serial8250_modem_status(up);
 
 	if (locked)
 		spin_unlock(&up->port.lock);
diff --git a/drivers/tty/serial/8250.h b/drivers/tty/serial/8250/8250.h
index 6edf4a6a22d4..ae027be57e25 100644
--- a/drivers/tty/serial/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -13,6 +13,32 @@
 
 #include <linux/serial_8250.h>
 
+struct uart_8250_port {
+	struct uart_port	port;
+	struct timer_list	timer;		/* "no irq" timer */
+	struct list_head	list;		/* ports on this IRQ */
+	unsigned short		capabilities;	/* port capabilities */
+	unsigned short		bugs;		/* port bugs */
+	unsigned int		tx_loadsz;	/* transmit fifo load size */
+	unsigned char		acr;
+	unsigned char		ier;
+	unsigned char		lcr;
+	unsigned char		mcr;
+	unsigned char		mcr_mask;	/* mask of user bits */
+	unsigned char		mcr_force;	/* mask of forced bits */
+	unsigned char		cur_iotype;	/* Running I/O type */
+
+	/*
+	 * Some bits in registers are cleared on a read, so they must
+	 * be saved whenever the register is read but the bits will not
+	 * be immediately processed.
+	 */
+#define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS
+	unsigned char		lsr_saved_flags;
+#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
+	unsigned char		msr_saved_flags;
+};
+
 struct old_serial_port {
 	unsigned int uart;
 	unsigned int baud_base;
diff --git a/drivers/tty/serial/8250_accent.c b/drivers/tty/serial/8250/8250_accent.c
index 34b51c651192..34b51c651192 100644
--- a/drivers/tty/serial/8250_accent.c
+++ b/drivers/tty/serial/8250/8250_accent.c
diff --git a/drivers/tty/serial/8250_acorn.c b/drivers/tty/serial/8250/8250_acorn.c
index b0ce8c56f1a4..b0ce8c56f1a4 100644
--- a/drivers/tty/serial/8250_acorn.c
+++ b/drivers/tty/serial/8250/8250_acorn.c
diff --git a/drivers/tty/serial/8250_boca.c b/drivers/tty/serial/8250/8250_boca.c
index d125dc107985..d125dc107985 100644
--- a/drivers/tty/serial/8250_boca.c
+++ b/drivers/tty/serial/8250/8250_boca.c
diff --git a/drivers/tty/serial/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index bf1fba640c2d..f574eef3075f 100644
--- a/drivers/tty/serial/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -177,17 +177,7 @@ static struct platform_driver dw8250_platform_driver = {
 	.remove			= __devexit_p(dw8250_remove),
 };
 
-static int __init dw8250_init(void)
-{
-	return platform_driver_register(&dw8250_platform_driver);
-}
-module_init(dw8250_init);
-
-static void __exit dw8250_exit(void)
-{
-	platform_driver_unregister(&dw8250_platform_driver);
-}
-module_exit(dw8250_exit);
+module_platform_driver(dw8250_platform_driver);
 
 MODULE_AUTHOR("Jamie Iles");
 MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index eaafb98debed..eaafb98debed 100644
--- a/drivers/tty/serial/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
diff --git a/drivers/tty/serial/8250_exar_st16c554.c b/drivers/tty/serial/8250/8250_exar_st16c554.c
index bf53aabf9b5e..bf53aabf9b5e 100644
--- a/drivers/tty/serial/8250_exar_st16c554.c
+++ b/drivers/tty/serial/8250/8250_exar_st16c554.c
diff --git a/drivers/tty/serial/8250_fourport.c b/drivers/tty/serial/8250/8250_fourport.c
index be1582609626..be1582609626 100644
--- a/drivers/tty/serial/8250_fourport.c
+++ b/drivers/tty/serial/8250/8250_fourport.c
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
new file mode 100644
index 000000000000..f4d3c47b88e8
--- /dev/null
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -0,0 +1,63 @@
+#include <linux/serial_reg.h>
+#include <linux/serial_8250.h>
+
+#include "8250.h"
+
+/*
+ * Freescale 16550 UART "driver", Copyright (C) 2011 Paul Gortmaker.
+ *
+ * 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.
+ *
+ * This isn't a full driver; it just provides an alternate IRQ
+ * handler to deal with an errata.  Everything else is just
+ * using the bog standard 8250 support.
+ *
+ * We follow code flow of serial8250_default_handle_irq() but add
+ * a check for a break and insert a dummy read on the Rx for the
+ * immediately following IRQ event.
+ *
+ * We re-use the already existing "bug handling" lsr_saved_flags
+ * field to carry the "what we just did" information from the one
+ * IRQ event to the next one.
+ */
+
+int fsl8250_handle_irq(struct uart_port *port)
+{
+	unsigned char lsr, orig_lsr;
+	unsigned long flags;
+	unsigned int iir;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
+
+	spin_lock_irqsave(&up->port.lock, flags);
+
+	iir = port->serial_in(port, UART_IIR);
+	if (iir & UART_IIR_NO_INT) {
+		spin_unlock_irqrestore(&up->port.lock, flags);
+		return 0;
+	}
+
+	/* This is the WAR; if last event was BRK, then read and return */
+	if (unlikely(up->lsr_saved_flags & UART_LSR_BI)) {
+		up->lsr_saved_flags &= ~UART_LSR_BI;
+		port->serial_in(port, UART_RX);
+		spin_unlock_irqrestore(&up->port.lock, flags);
+		return 1;
+	}
+
+	lsr = orig_lsr = up->port.serial_in(&up->port, UART_LSR);
+
+	if (lsr & (UART_LSR_DR | UART_LSR_BI))
+		lsr = serial8250_rx_chars(up, lsr);
+
+	serial8250_modem_status(up);
+
+	if (lsr & UART_LSR_THRE)
+		serial8250_tx_chars(up);
+
+	up->lsr_saved_flags = orig_lsr;
+	spin_unlock_irqrestore(&up->port.lock, flags);
+	return 1;
+}
diff --git a/drivers/tty/serial/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index d8c0ffbfa6e3..d8c0ffbfa6e3 100644
--- a/drivers/tty/serial/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
diff --git a/drivers/tty/serial/8250_hp300.c b/drivers/tty/serial/8250/8250_hp300.c
index c13438c93012..c13438c93012 100644
--- a/drivers/tty/serial/8250_hp300.c
+++ b/drivers/tty/serial/8250/8250_hp300.c
diff --git a/drivers/tty/serial/8250_hub6.c b/drivers/tty/serial/8250/8250_hub6.c
index a5c778e83de0..a5c778e83de0 100644
--- a/drivers/tty/serial/8250_hub6.c
+++ b/drivers/tty/serial/8250/8250_hub6.c
diff --git a/drivers/tty/serial/8250_mca.c b/drivers/tty/serial/8250/8250_mca.c
index d20abf04541e..d20abf04541e 100644
--- a/drivers/tty/serial/8250_mca.c
+++ b/drivers/tty/serial/8250/8250_mca.c
diff --git a/drivers/tty/serial/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 825937a5f210..da2b0b0a183f 100644
--- a/drivers/tty/serial/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1092,6 +1092,14 @@ static int skip_tx_en_setup(struct serial_private *priv,
 	return pci_default_setup(priv, board, port, idx);
 }
 
+static int kt_serial_setup(struct serial_private *priv,
+			   const struct pciserial_board *board,
+			   struct uart_port *port, int idx)
+{
+	port->flags |= UPF_IIR_ONCE;
+	return skip_tx_en_setup(priv, board, port, idx);
+}
+
 static int pci_eg20t_init(struct pci_dev *dev)
 {
 #if defined(CONFIG_SERIAL_PCH_UART) || defined(CONFIG_SERIAL_PCH_UART_MODULE)
@@ -1110,7 +1118,18 @@ pci_xr17c154_setup(struct serial_private *priv,
 	return pci_default_setup(priv, board, port, idx);
 }
 
-/* This should be in linux/pci_ids.h */
+static int try_enable_msi(struct pci_dev *dev)
+{
+	/* use msi if available, but fallback to legacy otherwise */
+	pci_enable_msi(dev);
+	return 0;
+}
+
+static void disable_msi(struct pci_dev *dev)
+{
+	pci_disable_msi(dev);
+}
+
 #define PCI_VENDOR_ID_SBSMODULARIO	0x124B
 #define PCI_SUBVENDOR_ID_SBSMODULARIO	0x124B
 #define PCI_DEVICE_ID_OCTPRO		0x0001
@@ -1133,9 +1152,14 @@ pci_xr17c154_setup(struct serial_private *priv,
 #define PCI_DEVICE_ID_TITAN_800E	0xA014
 #define PCI_DEVICE_ID_TITAN_200EI	0xA016
 #define PCI_DEVICE_ID_TITAN_200EISI	0xA017
+#define PCI_DEVICE_ID_TITAN_400V3	0xA310
+#define PCI_DEVICE_ID_TITAN_410V3	0xA312
+#define PCI_DEVICE_ID_TITAN_800V3	0xA314
+#define PCI_DEVICE_ID_TITAN_800V3B	0xA315
 #define PCI_DEVICE_ID_OXSEMI_16PCI958	0x9538
 #define PCIE_DEVICE_ID_NEO_2_OX_IBM	0x00F6
 #define PCI_DEVICE_ID_PLX_CRONYX_OMEGA	0xc001
+#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
 
 /* Unknown vendors/cards - this should not be in linux/pci_ids.h */
 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584	0x1584
@@ -1220,6 +1244,15 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
 		.subdevice	= PCI_ANY_ID,
 		.setup		= ce4100_serial_setup,
 	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_PATSBURG_KT,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.init		= try_enable_msi,
+		.setup		= kt_serial_setup,
+		.exit		= disable_msi,
+	},
 	/*
 	 * ITE
 	 */
@@ -3414,6 +3447,18 @@ static struct pci_device_id serial_pci_tbl[] = {
 	{	PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200EISI,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_oxsemi_2_4000000 },
+	{	PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400V3,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+		pbn_b0_4_921600 },
+	{	PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_410V3,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+		pbn_b0_4_921600 },
+	{	PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800V3,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+		pbn_b0_4_921600 },
+	{	PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800V3B,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+		pbn_b0_4_921600 },
 
 	{	PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_550,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
diff --git a/drivers/tty/serial/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index a2f236510ff1..a2f236510ff1 100644
--- a/drivers/tty/serial/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
new file mode 100644
index 000000000000..591f8018e7dd
--- /dev/null
+++ b/drivers/tty/serial/8250/Kconfig
@@ -0,0 +1,280 @@
+#
+# The 8250/16550 serial drivers.  You shouldn't be in this list unless
+# you somehow have an implicit or explicit dependency on SERIAL_8250.
+#
+
+config SERIAL_8250
+	tristate "8250/16550 and compatible serial support"
+	select SERIAL_CORE
+	---help---
+	  This selects whether you want to include the driver for the standard
+	  serial ports.  The standard answer is Y.  People who might say N
+	  here are those that are setting up dedicated Ethernet WWW/FTP
+	  servers, or users that have one of the various bus mice instead of a
+	  serial mouse and don't intend to use their machine's standard serial
+	  port for anything.  (Note that the Cyclades and Stallion multi
+	  serial port drivers do not need this driver built in for them to
+	  work.)
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called 8250.
+	  [WARNING: Do not compile this driver as a module if you are using
+	  non-standard serial ports, since the configuration information will
+	  be lost when the driver is unloaded.  This limitation may be lifted
+	  in the future.]
+
+	  BTW1: If you have a mouseman serial mouse which is not recognized by
+	  the X window system, try running gpm first.
+
+	  BTW2: If you intend to use a software modem (also called Winmodem)
+	  under Linux, forget it.  These modems are crippled and require
+	  proprietary drivers which are only available under Windows.
+
+	  Most people will say Y or M here, so that they can use serial mice,
+	  modems and similar devices connecting to the standard serial ports.
+
+config SERIAL_8250_CONSOLE
+	bool "Console on 8250/16550 and compatible serial port"
+	depends on SERIAL_8250=y
+	select SERIAL_CORE_CONSOLE
+	---help---
+	  If you say Y here, it will be possible to use a serial port as the
+	  system console (the system console is the device which receives all
+	  kernel messages and warnings and which allows logins in single user
+	  mode). This could be useful if some terminal or printer is connected
+	  to that serial port.
+
+	  Even if you say Y here, the currently visible virtual console
+	  (/dev/tty0) will still be used as the system console by default, but
+	  you can alter that using a kernel command line option such as
+	  "console=ttyS1". (Try "man bootparam" or see the documentation of
+	  your boot loader (grub or lilo or loadlin) about how to pass options
+	  to the kernel at boot time.)
+
+	  If you don't have a VGA card installed and you say Y here, the
+	  kernel will automatically use the first serial line, /dev/ttyS0, as
+	  system console.
+
+	  You can set that using a kernel command line option such as
+	  "console=uart8250,io,0x3f8,9600n8"
+	  "console=uart8250,mmio,0xff5e0000,115200n8".
+	  and it will switch to normal serial console when the corresponding
+	  port is ready.
+	  "earlycon=uart8250,io,0x3f8,9600n8"
+	  "earlycon=uart8250,mmio,0xff5e0000,115200n8".
+	  it will not only setup early console.
+
+	  If unsure, say N.
+
+config FIX_EARLYCON_MEM
+	bool
+	depends on X86
+	default y
+
+config SERIAL_8250_GSC
+	tristate
+	depends on SERIAL_8250 && GSC
+	default SERIAL_8250
+
+config SERIAL_8250_PCI
+	tristate "8250/16550 PCI device support" if EXPERT
+	depends on SERIAL_8250 && PCI
+	default SERIAL_8250
+	help
+	  This builds standard PCI serial support. You may be able to
+	  disable this feature if you only need legacy serial support.
+	  Saves about 9K.
+
+config SERIAL_8250_PNP
+	tristate "8250/16550 PNP device support" if EXPERT
+	depends on SERIAL_8250 && PNP
+	default SERIAL_8250
+	help
+	  This builds standard PNP serial support. You may be able to
+	  disable this feature if you only need legacy serial support.
+
+config SERIAL_8250_HP300
+	tristate
+	depends on SERIAL_8250 && HP300
+	default SERIAL_8250
+
+config SERIAL_8250_CS
+	tristate "8250/16550 PCMCIA device support"
+	depends on PCMCIA && SERIAL_8250
+	---help---
+	  Say Y here to enable support for 16-bit PCMCIA serial devices,
+	  including serial port cards, modems, and the modem functions of
+	  multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
+	  credit-card size devices often used with laptops.)
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called serial_cs.
+
+	  If unsure, say N.
+
+config SERIAL_8250_NR_UARTS
+	int "Maximum number of 8250/16550 serial ports"
+	depends on SERIAL_8250
+	default "4"
+	help
+	  Set this to the number of serial ports you want the driver
+	  to support.  This includes any ports discovered via ACPI or
+	  PCI enumeration and any ports that may be added at run-time
+	  via hot-plug, or any ISA multi-port serial cards.
+
+config SERIAL_8250_RUNTIME_UARTS
+	int "Number of 8250/16550 serial ports to register at runtime"
+	depends on SERIAL_8250
+	range 0 SERIAL_8250_NR_UARTS
+	default "4"
+	help
+	  Set this to the maximum number of serial ports you want
+	  the kernel to register at boot time.  This can be overridden
+	  with the module parameter "nr_uarts", or boot-time parameter
+	  8250.nr_uarts
+
+config SERIAL_8250_EXTENDED
+	bool "Extended 8250/16550 serial driver options"
+	depends on SERIAL_8250
+	help
+	  If you wish to use any non-standard features of the standard "dumb"
+	  driver, say Y here. This includes HUB6 support, shared serial
+	  interrupts, special multiport support, support for more than the
+	  four COM 1/2/3/4 boards, etc.
+
+	  Note that the answer to this question won't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about serial driver options. If unsure, say N.
+
+config SERIAL_8250_MANY_PORTS
+	bool "Support more than 4 legacy serial ports"
+	depends on SERIAL_8250_EXTENDED && !IA64
+	help
+	  Say Y here if you have dumb serial boards other than the four
+	  standard COM 1/2/3/4 ports. This may happen if you have an AST
+	  FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
+	  from <http://www.tldp.org/docs.html#howto>), or other custom
+	  serial port hardware which acts similar to standard serial port
+	  hardware. If you only use the standard COM 1/2/3/4 ports, you can
+	  say N here to save some memory. You can also say Y if you have an
+	  "intelligent" multiport card such as Cyclades, Digiboards, etc.
+
+#
+# Multi-port serial cards
+#
+
+config SERIAL_8250_FOURPORT
+	tristate "Support Fourport cards"
+	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+	help
+	  Say Y here if you have an AST FourPort serial board.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 8250_fourport.
+
+config SERIAL_8250_ACCENT
+	tristate "Support Accent cards"
+	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+	help
+	  Say Y here if you have an Accent Async serial board.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 8250_accent.
+
+config SERIAL_8250_BOCA
+	tristate "Support Boca cards"
+	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+	help
+	  Say Y here if you have a Boca serial board.  Please read the Boca
+	  mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>
+
+	  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
+	help
+	  Say Y here if you have a HUB6 serial board.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 8250_hub6.
+
+#
+# Misc. options/drivers.
+#
+
+config SERIAL_8250_SHARE_IRQ
+	bool "Support for sharing serial interrupts"
+	depends on SERIAL_8250_EXTENDED
+	help
+	  Some serial boards have hardware support which allows multiple dumb
+	  serial ports on the same board to share a single IRQ. To enable
+	  support for this in the serial driver, say Y here.
+
+config SERIAL_8250_DETECT_IRQ
+	bool "Autodetect IRQ on standard ports (unsafe)"
+	depends on SERIAL_8250_EXTENDED
+	help
+	  Say Y here if you want the kernel to try to guess which IRQ
+	  to use for your serial port.
+
+	  This is considered unsafe; it is far better to configure the IRQ in
+	  a boot script using the setserial command.
+
+	  If unsure, say N.
+
+config SERIAL_8250_RSA
+	bool "Support RSA serial ports"
+	depends on SERIAL_8250_EXTENDED
+	help
+	  ::: To be written :::
+
+config SERIAL_8250_MCA
+	tristate "Support 8250-type ports on MCA buses"
+	depends on SERIAL_8250 != n && MCA
+	help
+	  Say Y here if you have a MCA serial ports.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 8250_mca.
+
+config SERIAL_8250_ACORN
+	tristate "Acorn expansion card serial port support"
+	depends on ARCH_ACORN && SERIAL_8250
+	help
+	  If you have an Atomwide Serial card or Serial Port card for an Acorn
+	  system, say Y to this option.  The driver can handle 1, 2, or 3 port
+	  cards.  If unsure, say N.
+
+config SERIAL_8250_RM9K
+	bool "Support for MIPS RM9xxx integrated serial port"
+	depends on SERIAL_8250 != n && SERIAL_RM9000
+	select SERIAL_8250_SHARE_IRQ
+	help
+	  Selecting this option will add support for the integrated serial
+	  port hardware found on MIPS RM9122 and similar processors.
+	  If unsure, say N.
+
+config SERIAL_8250_FSL
+	bool
+	depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
+	default PPC
+
+config SERIAL_8250_DW
+	tristate "Support for Synopsys DesignWare 8250 quirks"
+	depends on SERIAL_8250 && OF
+	help
+	  Selecting this option will enable handling of the extra features
+	  present in the Synopsys DesignWare APB UART.
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
new file mode 100644
index 000000000000..867bba738908
--- /dev/null
+++ b/drivers/tty/serial/8250/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for the 8250 serial device drivers.
+#
+
+obj-$(CONFIG_SERIAL_8250)		+= 8250.o
+obj-$(CONFIG_SERIAL_8250_PNP)		+= 8250_pnp.o
+obj-$(CONFIG_SERIAL_8250_GSC)		+= 8250_gsc.o
+obj-$(CONFIG_SERIAL_8250_PCI)		+= 8250_pci.o
+obj-$(CONFIG_SERIAL_8250_HP300)		+= 8250_hp300.o
+obj-$(CONFIG_SERIAL_8250_CS)		+= serial_cs.o
+obj-$(CONFIG_SERIAL_8250_ACORN)		+= 8250_acorn.o
+obj-$(CONFIG_SERIAL_8250_CONSOLE)	+= 8250_early.o
+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-$(CONFIG_SERIAL_8250_FSL)		+= 8250_fsl.o
+obj-$(CONFIG_SERIAL_8250_DW)		+= 8250_dw.o
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/8250/m32r_sio.c
index 08018934e013..94a6792bf97b 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/8250/m32r_sio.c
@@ -1000,11 +1000,8 @@ static void __init m32r_sio_register_ports(struct uart_driver *drv)
 		init_timer(&up->timer);
 		up->timer.function = m32r_sio_timeout;
 
-		/*
-		 * ALPHA_KLUDGE_MCR needs to be killed.
-		 */
-		up->mcr_mask = ~ALPHA_KLUDGE_MCR;
-		up->mcr_force = ALPHA_KLUDGE_MCR;
+		up->mcr_mask = ~0;
+		up->mcr_force = 0;
 
 		uart_add_one_port(drv, &up->port);
 	}
diff --git a/drivers/tty/serial/m32r_sio.h b/drivers/tty/serial/8250/m32r_sio.h
index e9b7e11793b1..e9b7e11793b1 100644
--- a/drivers/tty/serial/m32r_sio.h
+++ b/drivers/tty/serial/8250/m32r_sio.h
diff --git a/drivers/tty/serial/m32r_sio_reg.h b/drivers/tty/serial/8250/m32r_sio_reg.h
index 4671473793e3..4671473793e3 100644
--- a/drivers/tty/serial/m32r_sio_reg.h
+++ b/drivers/tty/serial/8250/m32r_sio_reg.h
diff --git a/drivers/tty/serial/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c
index eef736ff810a..86090605a84e 100644
--- a/drivers/tty/serial/serial_cs.c
+++ b/drivers/tty/serial/8250/serial_cs.c
@@ -317,7 +317,7 @@ static int serial_probe(struct pcmcia_device *link)
 	info->p_dev = link;
 	link->priv = info;
 
-	link->config_flags |= CONF_ENABLE_IRQ;
+	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
 	if (do_sound)
 		link->config_flags |= CONF_ENABLE_SPKR;
 
@@ -445,7 +445,7 @@ static int simple_config(struct pcmcia_device *link)
 
 	/* First pass: look for a config entry that looks normal.
 	 * Two tries: without IO aliases, then with aliases */
-	link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_SET_IO;
+	link->config_flags |= CONF_AUTO_SET_VPP;
 	for (try = 0; try < 4; try++)
 		if (!pcmcia_loop_config(link, simple_config_check, &try))
 			goto found_port;
@@ -501,7 +501,8 @@ static int multi_config_check_notpicky(struct pcmcia_device *p_dev,
 {
 	int *base2 = priv_data;
 
-	if (!p_dev->resource[0]->end || !p_dev->resource[1]->end)
+	if (!p_dev->resource[0]->end || !p_dev->resource[1]->end ||
+		p_dev->resource[0]->start + 8 != p_dev->resource[1]->start)
 		return -ENODEV;
 
 	p_dev->resource[0]->end = p_dev->resource[1]->end = 8;
@@ -520,7 +521,6 @@ static int multi_config(struct pcmcia_device *link)
 	struct serial_info *info = link->priv;
 	int i, base2 = 0;
 
-	link->config_flags |= CONF_AUTO_SET_IO;
 	/* First, look for a generic full-sized window */
 	if (!pcmcia_loop_config(link, multi_config_check, &info->multi))
 		base2 = link->resource[0]->start + 8;
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 95b21a619900..2de99248dfae 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -5,274 +5,7 @@
 menu "Serial drivers"
 	depends on HAS_IOMEM
 
-#
-# The new 8250/16550 serial drivers
-config SERIAL_8250
-	tristate "8250/16550 and compatible serial support"
-	select SERIAL_CORE
-	---help---
-	  This selects whether you want to include the driver for the standard
-	  serial ports.  The standard answer is Y.  People who might say N
-	  here are those that are setting up dedicated Ethernet WWW/FTP
-	  servers, or users that have one of the various bus mice instead of a
-	  serial mouse and don't intend to use their machine's standard serial
-	  port for anything.  (Note that the Cyclades and Stallion multi
-	  serial port drivers do not need this driver built in for them to
-	  work.)
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called 8250.
-	  [WARNING: Do not compile this driver as a module if you are using
-	  non-standard serial ports, since the configuration information will
-	  be lost when the driver is unloaded.  This limitation may be lifted
-	  in the future.]
-
-	  BTW1: If you have a mouseman serial mouse which is not recognized by
-	  the X window system, try running gpm first.
-
-	  BTW2: If you intend to use a software modem (also called Winmodem)
-	  under Linux, forget it.  These modems are crippled and require
-	  proprietary drivers which are only available under Windows.
-
-	  Most people will say Y or M here, so that they can use serial mice,
-	  modems and similar devices connecting to the standard serial ports.
-
-config SERIAL_8250_CONSOLE
-	bool "Console on 8250/16550 and compatible serial port"
-	depends on SERIAL_8250=y
-	select SERIAL_CORE_CONSOLE
-	---help---
-	  If you say Y here, it will be possible to use a serial port as the
-	  system console (the system console is the device which receives all
-	  kernel messages and warnings and which allows logins in single user
-	  mode). This could be useful if some terminal or printer is connected
-	  to that serial port.
-
-	  Even if you say Y here, the currently visible virtual console
-	  (/dev/tty0) will still be used as the system console by default, but
-	  you can alter that using a kernel command line option such as
-	  "console=ttyS1". (Try "man bootparam" or see the documentation of
-	  your boot loader (grub or lilo or loadlin) about how to pass options
-	  to the kernel at boot time.)
-
-	  If you don't have a VGA card installed and you say Y here, the
-	  kernel will automatically use the first serial line, /dev/ttyS0, as
-	  system console.
-
-	  You can set that using a kernel command line option such as
-	  "console=uart8250,io,0x3f8,9600n8"
-	  "console=uart8250,mmio,0xff5e0000,115200n8".
-	  and it will switch to normal serial console when the corresponding 
-	  port is ready.
-	  "earlycon=uart8250,io,0x3f8,9600n8"
-	  "earlycon=uart8250,mmio,0xff5e0000,115200n8".
-	  it will not only setup early console.
-
-	  If unsure, say N.
-
-config FIX_EARLYCON_MEM
-	bool
-	depends on X86
-	default y
-
-config SERIAL_8250_GSC
-	tristate
-	depends on SERIAL_8250 && GSC
-	default SERIAL_8250
-
-config SERIAL_8250_PCI
-	tristate "8250/16550 PCI device support" if EXPERT
-	depends on SERIAL_8250 && PCI
-	default SERIAL_8250
-	help
-	  This builds standard PCI serial support. You may be able to
-	  disable this feature if you only need legacy serial support.
-	  Saves about 9K.
-
-config SERIAL_8250_PNP
-	tristate "8250/16550 PNP device support" if EXPERT
-	depends on SERIAL_8250 && PNP
-	default SERIAL_8250
-	help
-	  This builds standard PNP serial support. You may be able to
-	  disable this feature if you only need legacy serial support.
-
-config SERIAL_8250_HP300
-	tristate
-	depends on SERIAL_8250 && HP300
-	default SERIAL_8250
-
-config SERIAL_8250_CS
-	tristate "8250/16550 PCMCIA device support"
-	depends on PCMCIA && SERIAL_8250
-	---help---
-	  Say Y here to enable support for 16-bit PCMCIA serial devices,
-	  including serial port cards, modems, and the modem functions of
-	  multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
-	  credit-card size devices often used with laptops.)
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called serial_cs.
-
-	  If unsure, say N.
-
-config SERIAL_8250_NR_UARTS
-	int "Maximum number of 8250/16550 serial ports"
-	depends on SERIAL_8250
-	default "4"
-	help
-	  Set this to the number of serial ports you want the driver
-	  to support.  This includes any ports discovered via ACPI or
-	  PCI enumeration and any ports that may be added at run-time
-	  via hot-plug, or any ISA multi-port serial cards.
-
-config SERIAL_8250_RUNTIME_UARTS
-	int "Number of 8250/16550 serial ports to register at runtime"
-	depends on SERIAL_8250
-	range 0 SERIAL_8250_NR_UARTS
-	default "4"
-	help
-	  Set this to the maximum number of serial ports you want
-	  the kernel to register at boot time.  This can be overridden
-	  with the module parameter "nr_uarts", or boot-time parameter
-	  8250.nr_uarts
-
-config SERIAL_8250_EXTENDED
-	bool "Extended 8250/16550 serial driver options"
-	depends on SERIAL_8250
-	help
-	  If you wish to use any non-standard features of the standard "dumb"
-	  driver, say Y here. This includes HUB6 support, shared serial
-	  interrupts, special multiport support, support for more than the
-	  four COM 1/2/3/4 boards, etc.
-
-	  Note that the answer to this question won't directly affect the
-	  kernel: saying N will just cause the configurator to skip all
-	  the questions about serial driver options. If unsure, say N.
-
-config SERIAL_8250_MANY_PORTS
-	bool "Support more than 4 legacy serial ports"
-	depends on SERIAL_8250_EXTENDED && !IA64
-	help
-	  Say Y here if you have dumb serial boards other than the four
-	  standard COM 1/2/3/4 ports. This may happen if you have an AST
-	  FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
-	  from <http://www.tldp.org/docs.html#howto>), or other custom
-	  serial port hardware which acts similar to standard serial port
-	  hardware. If you only use the standard COM 1/2/3/4 ports, you can
-	  say N here to save some memory. You can also say Y if you have an
-	  "intelligent" multiport card such as Cyclades, Digiboards, etc.
-
-#
-# Multi-port serial cards
-#
-
-config SERIAL_8250_FOURPORT
-	tristate "Support Fourport cards"
-	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
-	help
-	  Say Y here if you have an AST FourPort serial board.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called 8250_fourport.
-
-config SERIAL_8250_ACCENT
-	tristate "Support Accent cards"
-	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
-	help
-	  Say Y here if you have an Accent Async serial board.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called 8250_accent.
-
-config SERIAL_8250_BOCA
-	tristate "Support Boca cards"
-	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
-	help
-	  Say Y here if you have a Boca serial board.  Please read the Boca
-	  mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>
-
-	  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
-	help
-	  Say Y here if you have a HUB6 serial board.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called 8250_hub6.
-
-config SERIAL_8250_SHARE_IRQ
-	bool "Support for sharing serial interrupts"
-	depends on SERIAL_8250_EXTENDED
-	help
-	  Some serial boards have hardware support which allows multiple dumb
-	  serial ports on the same board to share a single IRQ. To enable
-	  support for this in the serial driver, say Y here.
-
-config SERIAL_8250_DETECT_IRQ
-	bool "Autodetect IRQ on standard ports (unsafe)"
-	depends on SERIAL_8250_EXTENDED
-	help
-	  Say Y here if you want the kernel to try to guess which IRQ
-	  to use for your serial port.
-
-	  This is considered unsafe; it is far better to configure the IRQ in
-	  a boot script using the setserial command.
-
-	  If unsure, say N.
-
-config SERIAL_8250_RSA
-	bool "Support RSA serial ports"
-	depends on SERIAL_8250_EXTENDED
-	help
-	  ::: To be written :::
-
-config SERIAL_8250_MCA
-	tristate "Support 8250-type ports on MCA buses"
-	depends on SERIAL_8250 != n && MCA
-	help
-	  Say Y here if you have a MCA serial ports.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called 8250_mca.
-
-config SERIAL_8250_ACORN
-	tristate "Acorn expansion card serial port support"
-	depends on ARCH_ACORN && SERIAL_8250
-	help
-	  If you have an Atomwide Serial card or Serial Port card for an Acorn
-	  system, say Y to this option.  The driver can handle 1, 2, or 3 port
-	  cards.  If unsure, say N.
-
-config SERIAL_8250_RM9K
-	bool "Support for MIPS RM9xxx integrated serial port"
-	depends on SERIAL_8250 != n && SERIAL_RM9000
-	select SERIAL_8250_SHARE_IRQ
-	help
-	  Selecting this option will add support for the integrated serial
-	  port hardware found on MIPS RM9122 and similar processors.
-	  If unsure, say N.
-
-config SERIAL_8250_DW
-	tristate "Support for Synopsys DesignWare 8250 quirks"
-	depends on SERIAL_8250 && OF
-	help
-	  Selecting this option will enable handling of the extra features
-	  present in the Synopsys DesignWare APB UART.
+source "drivers/tty/serial/8250/Kconfig"
 
 comment "Non-8250 serial port support"
 
@@ -457,7 +190,7 @@ config SERIAL_SAMSUNG
 config SERIAL_SAMSUNG_UARTS_4
 	bool
 	depends on ARM && PLAT_SAMSUNG
-	default y if CPU_S3C2443
+	default y if !(CPU_S3C2410 || SERIAL_S3C2412 || CPU_S3C2440 || CPU_S3C2442)
 	help
 	  Internal node for the common case of 4 Samsung compatible UARTs
 
@@ -465,7 +198,7 @@ config SERIAL_SAMSUNG_UARTS
 	int
 	depends on ARM && PLAT_SAMSUNG
 	default 6 if ARCH_S5P6450
-	default 4 if SERIAL_SAMSUNG_UARTS_4
+	default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
 	default 3
 	help
 	  Select the number of available UART ports for the Samsung S3C
@@ -495,46 +228,27 @@ config SERIAL_SAMSUNG_CONSOLE
 	  your boot loader about how to pass options to the kernel at
 	  boot time.)
 
-config SERIAL_S3C2410
-	tristate "Samsung S3C2410 Serial port support"
-	depends on SERIAL_SAMSUNG && CPU_S3C2410
-	default y if CPU_S3C2410
-	help
-	  Serial port support for the Samsung S3C2410 SoC
-
-config SERIAL_S3C2412
-	tristate "Samsung S3C2412/S3C2413 Serial port support"
-	depends on SERIAL_SAMSUNG && CPU_S3C2412
-	default y if CPU_S3C2412
-	help
-	  Serial port support for the Samsung S3C2412 and S3C2413 SoC
-
-config SERIAL_S3C2440
-	tristate "Samsung S3C2440/S3C2442/S3C2416 Serial port support"
-	depends on SERIAL_SAMSUNG && (CPU_S3C2440 || CPU_S3C2442 || CPU_S3C2416)
-	default y if CPU_S3C2440
-	default y if CPU_S3C2442
-	select SERIAL_SAMSUNG_UARTS_4 if CPU_S3C2416
-	help
-	  Serial port support for the Samsung S3C2440, S3C2416 and S3C2442 SoC
-
-config SERIAL_S3C6400
-	tristate "Samsung S3C6400/S3C6410/S5P6440/S5P6450/S5PC100 Serial port support"
-	depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440 || CPU_S5P6450 || CPU_S5PC100)
-	select SERIAL_SAMSUNG_UARTS_4
-	default y
-	help
-	  Serial port support for the Samsung S3C6400, S3C6410, S5P6440, S5P6450
-	  and S5PC100 SoCs
-
-config SERIAL_S5PV210
-	tristate "Samsung S5PV210 Serial port support"
-	depends on SERIAL_SAMSUNG && (CPU_S5PV210 || CPU_EXYNOS4210 || SOC_EXYNOS4212)
-	select SERIAL_SAMSUNG_UARTS_4 if (CPU_S5PV210 || CPU_EXYNOS4210 || SOC_EXYNOS4212)
-	default y
-	help
-	  Serial port support for Samsung's S5P Family of SoC's
-
+config SERIAL_SIRFSOC
+        tristate "SiRF SoC Platform Serial port support"
+        depends on ARM && ARCH_PRIMA2
+        select SERIAL_CORE
+        help
+          Support for the on-chip UART on the CSR SiRFprimaII series,
+          providing /dev/ttySiRF0, 1 and 2 (note, some machines may not
+          provide all of these ports, depending on how the serial port
+          pins are configured).
+
+config SERIAL_SIRFSOC_CONSOLE
+        bool "Support for console on SiRF SoC serial port"
+        depends on SERIAL_SIRFSOC=y
+        select SERIAL_CORE_CONSOLE
+        help
+          Even if you say Y here, the currently visible virtual console
+          (/dev/tty0) will still be used as the system console by default, but
+          you can alter that using a kernel command line option such as
+          "console=ttySiRFx". (Try "man bootparam" or see the documentation of
+          your boot loader about how to pass options to the kernel at
+          boot time.)
 
 config SERIAL_MAX3100
 	tristate "MAX3100 support"
@@ -550,15 +264,6 @@ config SERIAL_MAX3107
 	help
 	  MAX3107 chip support
 
-config SERIAL_MAX3107_AAVA
-	tristate "MAX3107 AAVA platform support"
-	depends on X86_MRST && SERIAL_MAX3107 && GPIOLIB
-	select SERIAL_CORE
-	help
-	  Support for the MAX3107 chip configuration found on the AAVA
-	  platform. Includes the extra initialisation and GPIO support
-	  neded for this device.
-
 config SERIAL_DZ
 	bool "DECstation DZ serial driver"
 	depends on MACH_DECSTATION && 32BIT
@@ -1324,7 +1029,7 @@ config SERIAL_OF_PLATFORM
 
 config SERIAL_OMAP
 	tristate "OMAP serial port support"
-	depends on ARCH_OMAP2 || ARCH_OMAP3 || ARCH_OMAP4
+	depends on ARCH_OMAP2PLUS
 	select SERIAL_CORE
 	help
 	  If you have a machine based on an Texas Instruments OMAP CPU you
@@ -1575,6 +1280,15 @@ config SERIAL_PCH_UART
 	  ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
 	  ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 
+config SERIAL_PCH_UART_CONSOLE
+	bool "Support for console on Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
+	depends on SERIAL_PCH_UART=y
+	select SERIAL_CORE_CONSOLE
+	help
+	  Say Y here if you wish to use the PCH UART as the system console
+	  (the system  console is the device which receives all kernel messages and
+	  warnings and which allows logins in single user mode).
+
 config SERIAL_MSM_SMD
 	bool "Enable tty device interface for some SMD ports"
 	default n
@@ -1610,4 +1324,27 @@ config SERIAL_XILINX_PS_UART_CONSOLE
 	help
 	  Enable a Xilinx PS UART port to be the system console.
 
+config SERIAL_AR933X
+	bool "AR933X serial port support"
+	depends on SOC_AR933X
+	select SERIAL_CORE
+	help
+	  If you have an Atheros AR933X SOC based board and want to use the
+	  built-in UART of the SoC, say Y to this option.
+
+config SERIAL_AR933X_CONSOLE
+	bool "Console on AR933X serial port"
+	depends on SERIAL_AR933X=y
+	select SERIAL_CORE_CONSOLE
+	help
+	  Enable a built-in UART port of the AR933X to be the system console.
+
+config SERIAL_AR933X_NR_UARTS
+	int "Maximum number of AR933X serial ports"
+	depends on SERIAL_AR933X
+	default "2"
+	help
+	  Set this to the number of serial ports you want the driver
+	  to support.
+
 endmenu
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index e10cf5b54b6d..fef32e10c851 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -14,21 +14,9 @@ obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o
 obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
 obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
 
-obj-$(CONFIG_SERIAL_8250) += 8250.o
-obj-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
-obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
-obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o
-obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o
-obj-$(CONFIG_SERIAL_8250_CS) += serial_cs.o
-obj-$(CONFIG_SERIAL_8250_ACORN) += 8250_acorn.o
-obj-$(CONFIG_SERIAL_8250_CONSOLE) += 8250_early.o
-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-$(CONFIG_SERIAL_8250_DW) += 8250_dw.o
+# Now bring in any enabled 8250/16450/16550 type drivers.
+obj-$(CONFIG_SERIAL_8250) += 8250/
+
 obj-$(CONFIG_SERIAL_AMBA_PL010) += amba-pl010.o
 obj-$(CONFIG_SERIAL_AMBA_PL011) += amba-pl011.o
 obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
@@ -39,14 +27,8 @@ obj-$(CONFIG_SERIAL_BCM63XX) += bcm63xx_uart.o
 obj-$(CONFIG_SERIAL_BFIN) += bfin_uart.o
 obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
 obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
-obj-$(CONFIG_SERIAL_S3C2410) += s3c2410.o
-obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
-obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
-obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
-obj-$(CONFIG_SERIAL_S5PV210) += s5pv210.o
 obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
 obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
-obj-$(CONFIG_SERIAL_MAX3107_AAVA) += max3107-aava.o
 obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o
@@ -94,3 +76,5 @@ obj-$(CONFIG_SERIAL_MSM_SMD)	+= msm_smd_tty.o
 obj-$(CONFIG_SERIAL_MXS_AUART) += mxs-auart.o
 obj-$(CONFIG_SERIAL_LANTIQ)	+= lantiq.o
 obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o
+obj-$(CONFIG_SERIAL_SIRFSOC) += sirfsoc_uart.o
+obj-$(CONFIG_SERIAL_AR933X)   += ar933x_uart.o
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 6958594f2fc0..6800f5f26241 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -159,6 +159,7 @@ struct uart_amba_port {
 	unsigned int		fifosize;	/* vendor-specific */
 	unsigned int		lcrh_tx;	/* vendor-specific */
 	unsigned int		lcrh_rx;	/* vendor-specific */
+	unsigned int		old_cr;		/* state during shutdown */
 	bool			autorts;
 	char			type[12];
 	bool			interrupt_may_hang; /* vendor-specific */
@@ -268,7 +269,7 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap)
 	struct dma_slave_config tx_conf = {
 		.dst_addr = uap->port.mapbase + UART01x_DR,
 		.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
-		.direction = DMA_TO_DEVICE,
+		.direction = DMA_MEM_TO_DEV,
 		.dst_maxburst = uap->fifosize >> 1,
 	};
 	struct dma_chan *chan;
@@ -301,7 +302,7 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap)
 		struct dma_slave_config rx_conf = {
 			.src_addr = uap->port.mapbase + UART01x_DR,
 			.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
-			.direction = DMA_FROM_DEVICE,
+			.direction = DMA_DEV_TO_MEM,
 			.src_maxburst = uap->fifosize >> 1,
 		};
 
@@ -480,7 +481,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap)
 		return -EBUSY;
 	}
 
-	desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_TO_DEVICE,
+	desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV,
 					     DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dma_unmap_sg(dma_dev->dev, &dmatx->sg, 1, DMA_TO_DEVICE);
@@ -676,7 +677,7 @@ static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap)
 		&uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
 	dma_dev = rxchan->device;
 	desc = rxchan->device->device_prep_slave_sg(rxchan, &sgbuf->sg, 1,
-					DMA_FROM_DEVICE,
+					DMA_DEV_TO_MEM,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	/*
 	 * If the DMA engine is busy and cannot prepare a
@@ -1411,7 +1412,9 @@ static int pl011_startup(struct uart_port *port)
 	while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
 		barrier();
 
-	cr = UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
+	/* restore RTS and DTR */
+	cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
+	cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
 	writew(cr, uap->port.membase + UART011_CR);
 
 	/* Clear pending error interrupts */
@@ -1469,6 +1472,7 @@ static void pl011_shutdown_channel(struct uart_amba_port *uap,
 static void pl011_shutdown(struct uart_port *port)
 {
 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+	unsigned int cr;
 
 	/*
 	 * disable all interrupts
@@ -1488,9 +1492,16 @@ static void pl011_shutdown(struct uart_port *port)
 
 	/*
 	 * disable the port
+	 * disable the port. It should not disable RTS and DTR.
+	 * Also RTS and DTR state should be preserved to restore
+	 * it during startup().
 	 */
 	uap->autorts = false;
-	writew(UART01x_CR_UARTEN | UART011_CR_TXE, uap->port.membase + UART011_CR);
+	cr = readw(uap->port.membase + UART011_CR);
+	uap->old_cr = cr;
+	cr &= UART011_CR_RTS | UART011_CR_DTR;
+	cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
+	writew(cr, uap->port.membase + UART011_CR);
 
 	/*
 	 * disable break condition and fifos
@@ -1740,9 +1751,19 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
 {
 	struct uart_amba_port *uap = amba_ports[co->index];
 	unsigned int status, old_cr, new_cr;
+	unsigned long flags;
+	int locked = 1;
 
 	clk_enable(uap->clk);
 
+	local_irq_save(flags);
+	if (uap->port.sysrq)
+		locked = 0;
+	else if (oops_in_progress)
+		locked = spin_trylock(&uap->port.lock);
+	else
+		spin_lock(&uap->port.lock);
+
 	/*
 	 *	First save the CR then disable the interrupts
 	 */
@@ -1762,6 +1783,10 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
 	} while (status & UART01x_FR_BUSY);
 	writew(old_cr, uap->port.membase + UART011_CR);
 
+	if (locked)
+		spin_unlock(&uap->port.lock);
+	local_irq_restore(flags);
+
 	clk_disable(uap->clk);
 }
 
@@ -1905,6 +1930,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 	uap->vendor = vendor;
 	uap->lcrh_rx = vendor->lcrh_rx;
 	uap->lcrh_tx = vendor->lcrh_tx;
+	uap->old_cr = 0;
 	uap->fifosize = vendor->fifosize;
 	uap->interrupt_may_hang = vendor->interrupt_may_hang;
 	uap->port.dev = &dev->dev;
diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c
index 77554fd68d1f..7162f70d9260 100644
--- a/drivers/tty/serial/apbuart.c
+++ b/drivers/tty/serial/apbuart.c
@@ -577,7 +577,7 @@ static int __devinit apbuart_probe(struct platform_device *op)
 	return 0;
 }
 
-static struct of_device_id __initdata apbuart_match[] = {
+static struct of_device_id apbuart_match[] = {
 	{
 	 .name = "GAISLER_APBUART",
 	 },
@@ -597,7 +597,7 @@ static struct platform_driver grlib_apbuart_of_driver = {
 };
 
 
-static int grlib_apbuart_configure(void)
+static int __init grlib_apbuart_configure(void)
 {
 	struct device_node *np;
 	int line = 0;
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
new file mode 100644
index 000000000000..e4f60e2b87f3
--- /dev/null
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -0,0 +1,688 @@
+/*
+ *  Atheros AR933X SoC built-in UART driver
+ *
+ *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ *  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/ioport.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include <asm/mach-ath79/ar933x_uart.h>
+#include <asm/mach-ath79/ar933x_uart_platform.h>
+
+#define DRIVER_NAME "ar933x-uart"
+
+#define AR933X_DUMMY_STATUS_RD	0x01
+
+static struct uart_driver ar933x_uart_driver;
+
+struct ar933x_uart_port {
+	struct uart_port	port;
+	unsigned int		ier;	/* shadow Interrupt Enable Register */
+};
+
+static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
+					    int offset)
+{
+	return readl(up->port.membase + offset);
+}
+
+static inline void ar933x_uart_write(struct ar933x_uart_port *up,
+				     int offset, unsigned int value)
+{
+	writel(value, up->port.membase + offset);
+}
+
+static inline void ar933x_uart_rmw(struct ar933x_uart_port *up,
+				  unsigned int offset,
+				  unsigned int mask,
+				  unsigned int val)
+{
+	unsigned int t;
+
+	t = ar933x_uart_read(up, offset);
+	t &= ~mask;
+	t |= val;
+	ar933x_uart_write(up, offset, t);
+}
+
+static inline void ar933x_uart_rmw_set(struct ar933x_uart_port *up,
+				       unsigned int offset,
+				       unsigned int val)
+{
+	ar933x_uart_rmw(up, offset, 0, val);
+}
+
+static inline void ar933x_uart_rmw_clear(struct ar933x_uart_port *up,
+					 unsigned int offset,
+					 unsigned int val)
+{
+	ar933x_uart_rmw(up, offset, val, 0);
+}
+
+static inline void ar933x_uart_start_tx_interrupt(struct ar933x_uart_port *up)
+{
+	up->ier |= AR933X_UART_INT_TX_EMPTY;
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
+}
+
+static inline void ar933x_uart_stop_tx_interrupt(struct ar933x_uart_port *up)
+{
+	up->ier &= ~AR933X_UART_INT_TX_EMPTY;
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
+}
+
+static inline void ar933x_uart_putc(struct ar933x_uart_port *up, int ch)
+{
+	unsigned int rdata;
+
+	rdata = ch & AR933X_UART_DATA_TX_RX_MASK;
+	rdata |= AR933X_UART_DATA_TX_CSR;
+	ar933x_uart_write(up, AR933X_UART_DATA_REG, rdata);
+}
+
+static unsigned int ar933x_uart_tx_empty(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+	unsigned long flags;
+	unsigned int rdata;
+
+	spin_lock_irqsave(&up->port.lock, flags);
+	rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
+	spin_unlock_irqrestore(&up->port.lock, flags);
+
+	return (rdata & AR933X_UART_DATA_TX_CSR) ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int ar933x_uart_get_mctrl(struct uart_port *port)
+{
+	return TIOCM_CAR;
+}
+
+static void ar933x_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+static void ar933x_uart_start_tx(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+
+	ar933x_uart_start_tx_interrupt(up);
+}
+
+static void ar933x_uart_stop_tx(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+
+	ar933x_uart_stop_tx_interrupt(up);
+}
+
+static void ar933x_uart_stop_rx(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+
+	up->ier &= ~AR933X_UART_INT_RX_VALID;
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
+}
+
+static void ar933x_uart_break_ctl(struct uart_port *port, int break_state)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+	unsigned long flags;
+
+	spin_lock_irqsave(&up->port.lock, flags);
+	if (break_state == -1)
+		ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
+				    AR933X_UART_CS_TX_BREAK);
+	else
+		ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
+				      AR933X_UART_CS_TX_BREAK);
+	spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static void ar933x_uart_enable_ms(struct uart_port *port)
+{
+}
+
+static void ar933x_uart_set_termios(struct uart_port *port,
+				    struct ktermios *new,
+				    struct ktermios *old)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+	unsigned int cs;
+	unsigned long flags;
+	unsigned int baud, scale;
+
+	/* Only CS8 is supported */
+	new->c_cflag &= ~CSIZE;
+	new->c_cflag |= CS8;
+
+	/* Only one stop bit is supported */
+	new->c_cflag &= ~CSTOPB;
+
+	cs = 0;
+	if (new->c_cflag & PARENB) {
+		if (!(new->c_cflag & PARODD))
+			cs |= AR933X_UART_CS_PARITY_EVEN;
+		else
+			cs |= AR933X_UART_CS_PARITY_ODD;
+	} else {
+		cs |= AR933X_UART_CS_PARITY_NONE;
+	}
+
+	/* Mark/space parity is not supported */
+	new->c_cflag &= ~CMSPAR;
+
+	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
+	scale = (port->uartclk / (16 * baud)) - 1;
+
+	/*
+	 * Ok, we're now changing the port state. Do it with
+	 * interrupts disabled.
+	 */
+	spin_lock_irqsave(&up->port.lock, flags);
+
+	/* Update the per-port timeout. */
+	uart_update_timeout(port, new->c_cflag, baud);
+
+	up->port.ignore_status_mask = 0;
+
+	/* ignore all characters if CREAD is not set */
+	if ((new->c_cflag & CREAD) == 0)
+		up->port.ignore_status_mask |= AR933X_DUMMY_STATUS_RD;
+
+	ar933x_uart_write(up, AR933X_UART_CLOCK_REG,
+			  scale << AR933X_UART_CLOCK_SCALE_S | 8192);
+
+	/* setup configuration register */
+	ar933x_uart_rmw(up, AR933X_UART_CS_REG, AR933X_UART_CS_PARITY_M, cs);
+
+	/* enable host interrupt */
+	ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
+			    AR933X_UART_CS_HOST_INT_EN);
+
+	spin_unlock_irqrestore(&up->port.lock, flags);
+
+	if (tty_termios_baud_rate(new))
+		tty_termios_encode_baud_rate(new, baud, baud);
+}
+
+static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
+{
+	struct tty_struct *tty;
+	int max_count = 256;
+
+	tty = tty_port_tty_get(&up->port.state->port);
+	do {
+		unsigned int rdata;
+		unsigned char ch;
+
+		rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
+		if ((rdata & AR933X_UART_DATA_RX_CSR) == 0)
+			break;
+
+		/* remove the character from the FIFO */
+		ar933x_uart_write(up, AR933X_UART_DATA_REG,
+				  AR933X_UART_DATA_RX_CSR);
+
+		if (!tty) {
+			/* discard the data if no tty available */
+			continue;
+		}
+
+		up->port.icount.rx++;
+		ch = rdata & AR933X_UART_DATA_TX_RX_MASK;
+
+		if (uart_handle_sysrq_char(&up->port, ch))
+			continue;
+
+		if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0)
+			tty_insert_flip_char(tty, ch, TTY_NORMAL);
+	} while (max_count-- > 0);
+
+	if (tty) {
+		tty_flip_buffer_push(tty);
+		tty_kref_put(tty);
+	}
+}
+
+static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
+{
+	struct circ_buf *xmit = &up->port.state->xmit;
+	int count;
+
+	if (uart_tx_stopped(&up->port))
+		return;
+
+	count = up->port.fifosize;
+	do {
+		unsigned int rdata;
+
+		rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
+		if ((rdata & AR933X_UART_DATA_TX_CSR) == 0)
+			break;
+
+		if (up->port.x_char) {
+			ar933x_uart_putc(up, up->port.x_char);
+			up->port.icount.tx++;
+			up->port.x_char = 0;
+			continue;
+		}
+
+		if (uart_circ_empty(xmit))
+			break;
+
+		ar933x_uart_putc(up, xmit->buf[xmit->tail]);
+
+		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+		up->port.icount.tx++;
+	} while (--count > 0);
+
+	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+		uart_write_wakeup(&up->port);
+
+	if (!uart_circ_empty(xmit))
+		ar933x_uart_start_tx_interrupt(up);
+}
+
+static irqreturn_t ar933x_uart_interrupt(int irq, void *dev_id)
+{
+	struct ar933x_uart_port *up = dev_id;
+	unsigned int status;
+
+	status = ar933x_uart_read(up, AR933X_UART_CS_REG);
+	if ((status & AR933X_UART_CS_HOST_INT) == 0)
+		return IRQ_NONE;
+
+	spin_lock(&up->port.lock);
+
+	status = ar933x_uart_read(up, AR933X_UART_INT_REG);
+	status &= ar933x_uart_read(up, AR933X_UART_INT_EN_REG);
+
+	if (status & AR933X_UART_INT_RX_VALID) {
+		ar933x_uart_write(up, AR933X_UART_INT_REG,
+				  AR933X_UART_INT_RX_VALID);
+		ar933x_uart_rx_chars(up);
+	}
+
+	if (status & AR933X_UART_INT_TX_EMPTY) {
+		ar933x_uart_write(up, AR933X_UART_INT_REG,
+				  AR933X_UART_INT_TX_EMPTY);
+		ar933x_uart_stop_tx_interrupt(up);
+		ar933x_uart_tx_chars(up);
+	}
+
+	spin_unlock(&up->port.lock);
+
+	return IRQ_HANDLED;
+}
+
+static int ar933x_uart_startup(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+	unsigned long flags;
+	int ret;
+
+	ret = request_irq(up->port.irq, ar933x_uart_interrupt,
+			  up->port.irqflags, dev_name(up->port.dev), up);
+	if (ret)
+		return ret;
+
+	spin_lock_irqsave(&up->port.lock, flags);
+
+	/* Enable HOST interrupts */
+	ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
+			    AR933X_UART_CS_HOST_INT_EN);
+
+	/* Enable RX interrupts */
+	up->ier = AR933X_UART_INT_RX_VALID;
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
+
+	spin_unlock_irqrestore(&up->port.lock, flags);
+
+	return 0;
+}
+
+static void ar933x_uart_shutdown(struct uart_port *port)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+
+	/* Disable all interrupts */
+	up->ier = 0;
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
+
+	/* Disable break condition */
+	ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
+			      AR933X_UART_CS_TX_BREAK);
+
+	free_irq(up->port.irq, up);
+}
+
+static const char *ar933x_uart_type(struct uart_port *port)
+{
+	return (port->type == PORT_AR933X) ? "AR933X UART" : NULL;
+}
+
+static void ar933x_uart_release_port(struct uart_port *port)
+{
+	/* Nothing to release ... */
+}
+
+static int ar933x_uart_request_port(struct uart_port *port)
+{
+	/* UARTs always present */
+	return 0;
+}
+
+static void ar933x_uart_config_port(struct uart_port *port, int flags)
+{
+	if (flags & UART_CONFIG_TYPE)
+		port->type = PORT_AR933X;
+}
+
+static int ar933x_uart_verify_port(struct uart_port *port,
+				   struct serial_struct *ser)
+{
+	if (ser->type != PORT_UNKNOWN &&
+	    ser->type != PORT_AR933X)
+		return -EINVAL;
+
+	if (ser->irq < 0 || ser->irq >= NR_IRQS)
+		return -EINVAL;
+
+	if (ser->baud_base < 28800)
+		return -EINVAL;
+
+	return 0;
+}
+
+static struct uart_ops ar933x_uart_ops = {
+	.tx_empty	= ar933x_uart_tx_empty,
+	.set_mctrl	= ar933x_uart_set_mctrl,
+	.get_mctrl	= ar933x_uart_get_mctrl,
+	.stop_tx	= ar933x_uart_stop_tx,
+	.start_tx	= ar933x_uart_start_tx,
+	.stop_rx	= ar933x_uart_stop_rx,
+	.enable_ms	= ar933x_uart_enable_ms,
+	.break_ctl	= ar933x_uart_break_ctl,
+	.startup	= ar933x_uart_startup,
+	.shutdown	= ar933x_uart_shutdown,
+	.set_termios	= ar933x_uart_set_termios,
+	.type		= ar933x_uart_type,
+	.release_port	= ar933x_uart_release_port,
+	.request_port	= ar933x_uart_request_port,
+	.config_port	= ar933x_uart_config_port,
+	.verify_port	= ar933x_uart_verify_port,
+};
+
+#ifdef CONFIG_SERIAL_AR933X_CONSOLE
+
+static struct ar933x_uart_port *
+ar933x_console_ports[CONFIG_SERIAL_AR933X_NR_UARTS];
+
+static void ar933x_uart_wait_xmitr(struct ar933x_uart_port *up)
+{
+	unsigned int status;
+	unsigned int timeout = 60000;
+
+	/* Wait up to 60ms for the character(s) to be sent. */
+	do {
+		status = ar933x_uart_read(up, AR933X_UART_DATA_REG);
+		if (--timeout == 0)
+			break;
+		udelay(1);
+	} while ((status & AR933X_UART_DATA_TX_CSR) == 0);
+}
+
+static void ar933x_uart_console_putchar(struct uart_port *port, int ch)
+{
+	struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
+
+	ar933x_uart_wait_xmitr(up);
+	ar933x_uart_putc(up, ch);
+}
+
+static void ar933x_uart_console_write(struct console *co, const char *s,
+				      unsigned int count)
+{
+	struct ar933x_uart_port *up = ar933x_console_ports[co->index];
+	unsigned long flags;
+	unsigned int int_en;
+	int locked = 1;
+
+	local_irq_save(flags);
+
+	if (up->port.sysrq)
+		locked = 0;
+	else if (oops_in_progress)
+		locked = spin_trylock(&up->port.lock);
+	else
+		spin_lock(&up->port.lock);
+
+	/*
+	 * First save the IER then disable the interrupts
+	 */
+	int_en = ar933x_uart_read(up, AR933X_UART_INT_EN_REG);
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, 0);
+
+	uart_console_write(&up->port, s, count, ar933x_uart_console_putchar);
+
+	/*
+	 * Finally, wait for transmitter to become empty
+	 * and restore the IER
+	 */
+	ar933x_uart_wait_xmitr(up);
+	ar933x_uart_write(up, AR933X_UART_INT_EN_REG, int_en);
+
+	ar933x_uart_write(up, AR933X_UART_INT_REG, AR933X_UART_INT_ALLINTS);
+
+	if (locked)
+		spin_unlock(&up->port.lock);
+
+	local_irq_restore(flags);
+}
+
+static int ar933x_uart_console_setup(struct console *co, char *options)
+{
+	struct ar933x_uart_port *up;
+	int baud = 115200;
+	int bits = 8;
+	int parity = 'n';
+	int flow = 'n';
+
+	if (co->index < 0 || co->index >= CONFIG_SERIAL_AR933X_NR_UARTS)
+		return -EINVAL;
+
+	up = ar933x_console_ports[co->index];
+	if (!up)
+		return -ENODEV;
+
+	if (options)
+		uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+	return uart_set_options(&up->port, co, baud, parity, bits, flow);
+}
+
+static struct console ar933x_uart_console = {
+	.name		= "ttyATH",
+	.write		= ar933x_uart_console_write,
+	.device		= uart_console_device,
+	.setup		= ar933x_uart_console_setup,
+	.flags		= CON_PRINTBUFFER,
+	.index		= -1,
+	.data		= &ar933x_uart_driver,
+};
+
+static void ar933x_uart_add_console_port(struct ar933x_uart_port *up)
+{
+	ar933x_console_ports[up->port.line] = up;
+}
+
+#define AR933X_SERIAL_CONSOLE	(&ar933x_uart_console)
+
+#else
+
+static inline void ar933x_uart_add_console_port(struct ar933x_uart_port *up) {}
+
+#define AR933X_SERIAL_CONSOLE	NULL
+
+#endif /* CONFIG_SERIAL_AR933X_CONSOLE */
+
+static struct uart_driver ar933x_uart_driver = {
+	.owner		= THIS_MODULE,
+	.driver_name	= DRIVER_NAME,
+	.dev_name	= "ttyATH",
+	.nr		= CONFIG_SERIAL_AR933X_NR_UARTS,
+	.cons		= AR933X_SERIAL_CONSOLE,
+};
+
+static int __devinit ar933x_uart_probe(struct platform_device *pdev)
+{
+	struct ar933x_uart_platform_data *pdata;
+	struct ar933x_uart_port *up;
+	struct uart_port *port;
+	struct resource *mem_res;
+	struct resource *irq_res;
+	int id;
+	int ret;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata)
+		return -EINVAL;
+
+	id = pdev->id;
+	if (id == -1)
+		id = 0;
+
+	if (id > CONFIG_SERIAL_AR933X_NR_UARTS)
+		return -EINVAL;
+
+	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem_res) {
+		dev_err(&pdev->dev, "no MEM resource\n");
+		return -EINVAL;
+	}
+
+	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!irq_res) {
+		dev_err(&pdev->dev, "no IRQ resource\n");
+		return -EINVAL;
+	}
+
+	up = kzalloc(sizeof(struct ar933x_uart_port), GFP_KERNEL);
+	if (!up)
+		return -ENOMEM;
+
+	port = &up->port;
+	port->mapbase = mem_res->start;
+
+	port->membase = ioremap(mem_res->start, AR933X_UART_REGS_SIZE);
+	if (!port->membase) {
+		ret = -ENOMEM;
+		goto err_free_up;
+	}
+
+	port->line = id;
+	port->irq = irq_res->start;
+	port->dev = &pdev->dev;
+	port->type = PORT_AR933X;
+	port->iotype = UPIO_MEM32;
+	port->uartclk = pdata->uartclk;
+
+	port->regshift = 2;
+	port->fifosize = AR933X_UART_FIFO_SIZE;
+	port->ops = &ar933x_uart_ops;
+
+	ar933x_uart_add_console_port(up);
+
+	ret = uart_add_one_port(&ar933x_uart_driver, &up->port);
+	if (ret)
+		goto err_unmap;
+
+	platform_set_drvdata(pdev, up);
+	return 0;
+
+err_unmap:
+	iounmap(up->port.membase);
+err_free_up:
+	kfree(up);
+	return ret;
+}
+
+static int __devexit ar933x_uart_remove(struct platform_device *pdev)
+{
+	struct ar933x_uart_port *up;
+
+	up = platform_get_drvdata(pdev);
+	platform_set_drvdata(pdev, NULL);
+
+	if (up) {
+		uart_remove_one_port(&ar933x_uart_driver, &up->port);
+		iounmap(up->port.membase);
+		kfree(up);
+	}
+
+	return 0;
+}
+
+static struct platform_driver ar933x_uart_platform_driver = {
+	.probe		= ar933x_uart_probe,
+	.remove		= __devexit_p(ar933x_uart_remove),
+	.driver		= {
+		.name		= DRIVER_NAME,
+		.owner		= THIS_MODULE,
+	},
+};
+
+static int __init ar933x_uart_init(void)
+{
+	int ret;
+
+	ar933x_uart_driver.nr = CONFIG_SERIAL_AR933X_NR_UARTS;
+	ret = uart_register_driver(&ar933x_uart_driver);
+	if (ret)
+		goto err_out;
+
+	ret = platform_driver_register(&ar933x_uart_platform_driver);
+	if (ret)
+		goto err_unregister_uart_driver;
+
+	return 0;
+
+err_unregister_uart_driver:
+	uart_unregister_driver(&ar933x_uart_driver);
+err_out:
+	return ret;
+}
+
+static void __exit ar933x_uart_exit(void)
+{
+	platform_driver_unregister(&ar933x_uart_platform_driver);
+	uart_unregister_driver(&ar933x_uart_driver);
+}
+
+module_init(ar933x_uart_init);
+module_exit(ar933x_uart_exit);
+
+MODULE_DESCRIPTION("Atheros AR933X UART driver");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 4c823f341d98..10605ecc99ab 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -212,8 +212,9 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 {
 	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
 	unsigned int mode;
+	unsigned long flags;
 
-	spin_lock(&port->lock);
+	spin_lock_irqsave(&port->lock, flags);
 
 	/* Disable interrupts */
 	UART_PUT_IDR(port, atmel_port->tx_done_mask);
@@ -244,7 +245,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 	/* Enable interrupts */
 	UART_PUT_IER(port, atmel_port->tx_done_mask);
 
-	spin_unlock(&port->lock);
+	spin_unlock_irqrestore(&port->lock, flags);
 
 }
 
@@ -1256,12 +1257,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 
 static void atmel_set_ldisc(struct uart_port *port, int new)
 {
-	int line = port->line;
-
-	if (line >= port->state->port.tty->driver->num)
-		return;
-
-	if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+	if (new == N_PPS) {
 		port->flags |= UPF_HARDPPS_CD;
 		atmel_enable_ms(port);
 	} else {
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index ee101c0d358f..7fbc3a08f10d 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -299,8 +299,13 @@ static int sport_startup(struct uart_port *port)
 			dev_info(port->dev, "Unable to attach BlackFin UART over SPORT CTS interrupt. So, disable it.\n");
 		}
 	}
-	if (up->rts_pin >= 0)
-		gpio_direction_output(up->rts_pin, 0);
+	if (up->rts_pin >= 0) {
+		if (gpio_request(up->rts_pin, DRV_NAME)) {
+			dev_info(port->dev, "fail to request RTS PIN at GPIO_%d\n", up->rts_pin);
+			up->rts_pin = -1;
+		} else
+			gpio_direction_output(up->rts_pin, 0);
+	}
 #endif
 
 	return 0;
@@ -445,6 +450,8 @@ static void sport_shutdown(struct uart_port *port)
 #ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
 	if (up->cts_pin >= 0)
 		free_irq(gpio_to_irq(up->cts_pin), up);
+	if (up->rts_pin >= 0)
+		gpio_free(up->rts_pin);
 #endif
 }
 
@@ -803,17 +810,16 @@ static int __devinit sport_uart_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 		if (res == NULL)
 			sport->cts_pin = -1;
-		else
+		else {
 			sport->cts_pin = res->start;
+			sport->port.flags |= ASYNC_CTS_FLOW;
+		}
 
 		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
 		if (res == NULL)
 			sport->rts_pin = -1;
 		else
 			sport->rts_pin = res->start;
-
-		if (sport->rts_pin >= 0)
-			gpio_request(sport->rts_pin, DRV_NAME);
 #endif
 	}
 
@@ -853,10 +859,6 @@ static int __devexit sport_uart_remove(struct platform_device *pdev)
 
 	if (sport) {
 		uart_remove_one_port(&sport_uart_reg, &sport->port);
-#ifdef CONFIG_SERIAL_BFIN_CTSRTS
-		if (sport->rts_pin >= 0)
-			gpio_free(sport->rts_pin);
-#endif
 		iounmap(sport->port.membase);
 		peripheral_free_list(
 			(unsigned short *)pdev->dev.platform_data);
diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
index 6d06ce1d5675..e4510ea135ce 100644
--- a/drivers/tty/serial/bfin_sport_uart.h
+++ b/drivers/tty/serial/bfin_sport_uart.h
@@ -45,11 +45,12 @@
 #define SPORT_GET_RX32(sport) \
 ({ \
 	unsigned int __ret; \
+	unsigned long flags; \
 	if (ANOMALY_05000473) \
-		local_irq_disable(); \
+		local_irq_save(flags); \
 	__ret = bfin_read32((sport)->port.membase + OFFSET_RX); \
 	if (ANOMALY_05000473) \
-		local_irq_enable(); \
+		local_irq_restore(flags); \
 	__ret; \
 })
 #define SPORT_GET_RCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR1))
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index 66afb98b77b5..26953bfa6922 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -116,15 +116,22 @@ static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
 static irqreturn_t bfin_serial_mctrl_cts_int(int irq, void *dev_id)
 {
 	struct bfin_serial_port *uart = dev_id;
-	unsigned int status;
-
-	status = bfin_serial_get_mctrl(&uart->port);
-	uart_handle_cts_change(&uart->port, status & TIOCM_CTS);
+	unsigned int status = bfin_serial_get_mctrl(&uart->port);
 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	uart->scts = 1;
+	struct tty_struct *tty = uart->port.state->port.tty;
+
 	UART_CLEAR_SCTS(uart);
-	UART_CLEAR_IER(uart, EDSSI);
+	if (tty->hw_stopped) {
+		if (status) {
+			tty->hw_stopped = 0;
+			uart_write_wakeup(&uart->port);
+		}
+	} else {
+		if (!status)
+			tty->hw_stopped = 1;
+	}
 #endif
+	uart_handle_cts_change(&uart->port, status & TIOCM_CTS);
 
 	return IRQ_HANDLED;
 }
@@ -175,13 +182,6 @@ static void bfin_serial_start_tx(struct uart_port *port)
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 	struct tty_struct *tty = uart->port.state->port.tty;
 
-#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) {
-		uart->scts = 0;
-		uart_handle_cts_change(&uart->port, uart->scts);
-	}
-#endif
-
 	/*
 	 * To avoid losting RX interrupt, we reset IR function
 	 * before sending data.
@@ -380,12 +380,6 @@ static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id)
 {
 	struct bfin_serial_port *uart = dev_id;
 
-#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) {
-		uart->scts = 0;
-		uart_handle_cts_change(&uart->port, uart->scts);
-	}
-#endif
 	spin_lock(&uart->port.lock);
 	if (UART_GET_LSR(uart) & THRE)
 		bfin_serial_tx_chars(uart);
@@ -531,13 +525,6 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
 	struct bfin_serial_port *uart = dev_id;
 	struct circ_buf *xmit = &uart->port.state->xmit;
 
-#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) {
-		uart->scts = 0;
-		uart_handle_cts_change(&uart->port, uart->scts);
-	}
-#endif
-
 	spin_lock(&uart->port.lock);
 	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
 		disable_dma(uart->tx_dma_channel);
@@ -739,20 +726,26 @@ static int bfin_serial_startup(struct uart_port *port)
 			pr_info("Unable to attach BlackFin UART CTS interrupt. So, disable it.\n");
 		}
 	}
-	if (uart->rts_pin >= 0)
-		gpio_direction_output(uart->rts_pin, 0);
+	if (uart->rts_pin >= 0) {
+		if (gpio_request(uart->rts_pin, DRIVER_NAME)) {
+			pr_info("fail to request RTS PIN at GPIO_%d\n", uart->rts_pin);
+			uart->rts_pin = -1;
+		} else
+			gpio_direction_output(uart->rts_pin, 0);
+	}
 #endif
 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0 && request_irq(uart->status_irq,
-		bfin_serial_mctrl_cts_int,
-		0, "BFIN_UART_MODEM_STATUS", uart)) {
-		uart->cts_pin = -1;
-		pr_info("Unable to attach BlackFin UART Modem Status interrupt.\n");
-	}
+	if (uart->cts_pin >= 0) {
+		if (request_irq(uart->status_irq, bfin_serial_mctrl_cts_int,
+			IRQF_DISABLED, "BFIN_UART_MODEM_STATUS", uart)) {
+			uart->cts_pin = -1;
+			dev_info(port->dev, "Unable to attach BlackFin UART Modem Status interrupt.\n");
+		}
 
-	/* CTS RTS PINs are negative assertive. */
-	UART_PUT_MCR(uart, ACTS);
-	UART_SET_IER(uart, EDSSI);
+		/* CTS RTS PINs are negative assertive. */
+		UART_PUT_MCR(uart, ACTS);
+		UART_SET_IER(uart, EDSSI);
+	}
 #endif
 
 	UART_SET_IER(uart, ERBFI);
@@ -792,6 +785,8 @@ static void bfin_serial_shutdown(struct uart_port *port)
 #ifdef CONFIG_SERIAL_BFIN_CTSRTS
 	if (uart->cts_pin >= 0)
 		free_irq(gpio_to_irq(uart->cts_pin), uart);
+	if (uart->rts_pin >= 0)
+		gpio_free(uart->rts_pin);
 #endif
 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
 	if (uart->cts_pin >= 0)
@@ -1370,18 +1365,18 @@ static int bfin_serial_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 		if (res == NULL)
 			uart->cts_pin = -1;
-		else
+		else {
 			uart->cts_pin = res->start;
+#ifdef CONFIG_SERIAL_BFIN_CTSRTS
+			uart->port.flags |= ASYNC_CTS_FLOW;
+#endif
+		}
 
 		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
 		if (res == NULL)
 			uart->rts_pin = -1;
 		else
 			uart->rts_pin = res->start;
-# if defined(CONFIG_SERIAL_BFIN_CTSRTS)
-		if (uart->rts_pin >= 0)
-			gpio_request(uart->rts_pin, DRIVER_NAME);
-# endif
 #endif
 	}
 
@@ -1421,10 +1416,6 @@ static int __devexit bfin_serial_remove(struct platform_device *pdev)
 
 	if (uart) {
 		uart_remove_one_port(&bfin_serial_reg, &uart->port);
-#ifdef CONFIG_SERIAL_BFIN_CTSRTS
-		if (uart->rts_pin >= 0)
-			gpio_free(uart->rts_pin);
-#endif
 		iounmap(uart->port.membase);
 		peripheral_free_list(
 			(unsigned short *)pdev->dev.platform_data);
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 426434e5eb7c..7e925e20cbaa 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -1334,7 +1334,6 @@ MODULE_DEVICE_TABLE(spi, ifx_id_table);
 static const struct spi_driver ifx_spi_driver = {
 	.driver = {
 		.name = DRVNAME,
-		.bus = &spi_bus_type,
 		.pm = &ifx_spi_pm,
 		.owner = THIS_MODULE},
 	.probe = ifx_spi_spi_probe,
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 163fc9021f5a..0b7fed746b27 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -102,6 +102,7 @@
 #define  UCR2_STPB       (1<<6)	 /* Stop */
 #define  UCR2_WS         (1<<5)	 /* Word size */
 #define  UCR2_RTSEN      (1<<4)	 /* Request to send interrupt enable */
+#define  UCR2_ATEN       (1<<3)  /* Aging Timer Enable */
 #define  UCR2_TXEN       (1<<2)	 /* Transmitter enabled */
 #define  UCR2_RXEN       (1<<1)	 /* Receiver enabled */
 #define  UCR2_SRST 	 (1<<0)	 /* SW reset */
@@ -207,6 +208,12 @@ struct imx_port {
 	struct imx_uart_data	*devdata;
 };
 
+struct imx_port_ucrs {
+	unsigned int	ucr1;
+	unsigned int	ucr2;
+	unsigned int	ucr3;
+};
+
 #ifdef CONFIG_IRDA
 #define USE_IRDA(sport)	((sport)->use_irda)
 #else
@@ -260,6 +267,27 @@ static inline int is_imx21_uart(struct imx_port *sport)
 }
 
 /*
+ * Save and restore functions for UCR1, UCR2 and UCR3 registers
+ */
+static void imx_port_ucrs_save(struct uart_port *port,
+			       struct imx_port_ucrs *ucr)
+{
+	/* save control registers */
+	ucr->ucr1 = readl(port->membase + UCR1);
+	ucr->ucr2 = readl(port->membase + UCR2);
+	ucr->ucr3 = readl(port->membase + UCR3);
+}
+
+static void imx_port_ucrs_restore(struct uart_port *port,
+				  struct imx_port_ucrs *ucr)
+{
+	/* restore control registers */
+	writel(ucr->ucr1, port->membase + UCR1);
+	writel(ucr->ucr2, port->membase + UCR2);
+	writel(ucr->ucr3, port->membase + UCR3);
+}
+
+/*
  * Handle any change of modem status signal since we were last called.
  */
 static void imx_mctrl_check(struct imx_port *sport)
@@ -566,6 +594,9 @@ static irqreturn_t imx_int(int irq, void *dev_id)
 	if (sts & USR1_RTSD)
 		imx_rtsint(irq, dev_id);
 
+	if (sts & USR1_AWAKE)
+		writel(USR1_AWAKE, sport->port.membase + USR1);
+
 	return IRQ_HANDLED;
 }
 
@@ -901,6 +932,8 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
 			ucr2 |= UCR2_PROE;
 	}
 
+	del_timer_sync(&sport->timer);
+
 	/*
 	 * Ask the core to calculate the divisor for us.
 	 */
@@ -931,8 +964,6 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
 			sport->port.ignore_status_mask |= URXD_OVRRUN;
 	}
 
-	del_timer_sync(&sport->timer);
-
 	/*
 	 * Update the per-port timeout.
 	 */
@@ -1079,6 +1110,70 @@ imx_verify_port(struct uart_port *port, struct serial_struct *ser)
 	return ret;
 }
 
+#if defined(CONFIG_CONSOLE_POLL)
+static int imx_poll_get_char(struct uart_port *port)
+{
+	struct imx_port_ucrs old_ucr;
+	unsigned int status;
+	unsigned char c;
+
+	/* save control registers */
+	imx_port_ucrs_save(port, &old_ucr);
+
+	/* disable interrupts */
+	writel(UCR1_UARTEN, port->membase + UCR1);
+	writel(old_ucr.ucr2 & ~(UCR2_ATEN | UCR2_RTSEN | UCR2_ESCI),
+	       port->membase + UCR2);
+	writel(old_ucr.ucr3 & ~(UCR3_DCD | UCR3_RI | UCR3_DTREN),
+	       port->membase + UCR3);
+
+	/* poll */
+	do {
+		status = readl(port->membase + USR2);
+	} while (~status & USR2_RDR);
+
+	/* read */
+	c = readl(port->membase + URXD0);
+
+	/* restore control registers */
+	imx_port_ucrs_restore(port, &old_ucr);
+
+	return c;
+}
+
+static void imx_poll_put_char(struct uart_port *port, unsigned char c)
+{
+	struct imx_port_ucrs old_ucr;
+	unsigned int status;
+
+	/* save control registers */
+	imx_port_ucrs_save(port, &old_ucr);
+
+	/* disable interrupts */
+	writel(UCR1_UARTEN, port->membase + UCR1);
+	writel(old_ucr.ucr2 & ~(UCR2_ATEN | UCR2_RTSEN | UCR2_ESCI),
+	       port->membase + UCR2);
+	writel(old_ucr.ucr3 & ~(UCR3_DCD | UCR3_RI | UCR3_DTREN),
+	       port->membase + UCR3);
+
+	/* drain */
+	do {
+		status = readl(port->membase + USR1);
+	} while (~status & USR1_TRDY);
+
+	/* write */
+	writel(c, port->membase + URTX0);
+
+	/* flush */
+	do {
+		status = readl(port->membase + USR2);
+	} while (~status & USR2_TXDC);
+
+	/* restore control registers */
+	imx_port_ucrs_restore(port, &old_ucr);
+}
+#endif
+
 static struct uart_ops imx_pops = {
 	.tx_empty	= imx_tx_empty,
 	.set_mctrl	= imx_set_mctrl,
@@ -1096,6 +1191,10 @@ static struct uart_ops imx_pops = {
 	.request_port	= imx_request_port,
 	.config_port	= imx_config_port,
 	.verify_port	= imx_verify_port,
+#if defined(CONFIG_CONSOLE_POLL)
+	.poll_get_char  = imx_poll_get_char,
+	.poll_put_char  = imx_poll_put_char,
+#endif
 };
 
 static struct imx_port *imx_ports[UART_NR];
@@ -1118,13 +1217,14 @@ static void
 imx_console_write(struct console *co, const char *s, unsigned int count)
 {
 	struct imx_port *sport = imx_ports[co->index];
-	unsigned int old_ucr1, old_ucr2, ucr1;
+	struct imx_port_ucrs old_ucr;
+	unsigned int ucr1;
 
 	/*
-	 *	First, save UCR1/2 and then disable interrupts
+	 *	First, save UCR1/2/3 and then disable interrupts
 	 */
-	ucr1 = old_ucr1 = readl(sport->port.membase + UCR1);
-	old_ucr2 = readl(sport->port.membase + UCR2);
+	imx_port_ucrs_save(&sport->port, &old_ucr);
+	ucr1 = old_ucr.ucr1;
 
 	if (is_imx1_uart(sport))
 		ucr1 |= IMX1_UCR1_UARTCLKEN;
@@ -1133,18 +1233,17 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 
 	writel(ucr1, sport->port.membase + UCR1);
 
-	writel(old_ucr2 | UCR2_TXEN, sport->port.membase + UCR2);
+	writel(old_ucr.ucr2 | UCR2_TXEN, sport->port.membase + UCR2);
 
 	uart_console_write(&sport->port, s, count, imx_console_putchar);
 
 	/*
 	 *	Finally, wait for transmitter to become empty
-	 *	and restore UCR1/2
+	 *	and restore UCR1/2/3
 	 */
 	while (!(readl(sport->port.membase + USR2) & USR2_TXDC));
 
-	writel(old_ucr1, sport->port.membase + UCR1);
-	writel(old_ucr2, sport->port.membase + UCR2);
+	imx_port_ucrs_restore(&sport->port, &old_ucr);
 }
 
 /*
@@ -1269,6 +1368,12 @@ static struct uart_driver imx_reg = {
 static int serial_imx_suspend(struct platform_device *dev, pm_message_t state)
 {
 	struct imx_port *sport = platform_get_drvdata(dev);
+	unsigned int val;
+
+	/* enable wakeup from i.MX UART */
+	val = readl(sport->port.membase + UCR3);
+	val |= UCR3_AWAKEN;
+	writel(val, sport->port.membase + UCR3);
 
 	if (sport)
 		uart_suspend_port(&imx_reg, &sport->port);
@@ -1279,6 +1384,12 @@ static int serial_imx_suspend(struct platform_device *dev, pm_message_t state)
 static int serial_imx_resume(struct platform_device *dev)
 {
 	struct imx_port *sport = platform_get_drvdata(dev);
+	unsigned int val;
+
+	/* disable wakeup from i.MX UART */
+	val = readl(sport->port.membase + UCR3);
+	val &= ~UCR3_AWAKEN;
+	writel(val, sport->port.membase + UCR3);
 
 	if (sport)
 		uart_resume_port(&imx_reg, &sport->port);
@@ -1287,6 +1398,10 @@ static int serial_imx_resume(struct platform_device *dev)
 }
 
 #ifdef CONFIG_OF
+/*
+ * This function returns 1 iff pdev isn't a device instatiated by dt, 0 iff it
+ * could successfully get all information from dt or a negative errno.
+ */
 static int serial_imx_probe_dt(struct imx_port *sport,
 		struct platform_device *pdev)
 {
@@ -1296,12 +1411,13 @@ static int serial_imx_probe_dt(struct imx_port *sport,
 	int ret;
 
 	if (!np)
-		return -ENODEV;
+		/* no device tree device */
+		return 1;
 
 	ret = of_alias_get_id(np, "serial");
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to get alias id, errno %d\n", ret);
-		return -ENODEV;
+		return ret;
 	}
 	sport->port.line = ret;
 
@@ -1319,7 +1435,7 @@ static int serial_imx_probe_dt(struct imx_port *sport,
 static inline int serial_imx_probe_dt(struct imx_port *sport,
 		struct platform_device *pdev)
 {
-	return -ENODEV;
+	return 1;
 }
 #endif
 
@@ -1354,8 +1470,10 @@ static int serial_imx_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	ret = serial_imx_probe_dt(sport, pdev);
-	if (ret == -ENODEV)
+	if (ret > 0)
 		serial_imx_probe_pdata(sport, pdev);
+	else if (ret < 0)
+		goto free;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
@@ -1476,7 +1594,7 @@ static int __init imx_serial_init(void)
 	if (ret != 0)
 		uart_unregister_driver(&imx_reg);
 
-	return 0;
+	return ret;
 }
 
 static void __exit imx_serial_exit(void)
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index 7c867a046c97..7545fe1b9925 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -251,6 +251,7 @@ static void jsm_io_resume(struct pci_dev *pdev)
 	struct jsm_board *brd = pci_get_drvdata(pdev);
 
 	pci_restore_state(pdev);
+	pci_save_state(pdev);
 
 	jsm_uart_port_init(brd);
 }
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index 8a6cc8c30b5a..b4902b99cfd2 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -901,7 +901,6 @@ static int max3100_resume(struct spi_device *spi)
 static struct spi_driver max3100_driver = {
 	.driver = {
 		.name		= "max3100",
-		.bus		= &spi_bus_type,
 		.owner		= THIS_MODULE,
 	},
 
diff --git a/drivers/tty/serial/max3107-aava.c b/drivers/tty/serial/max3107-aava.c
deleted file mode 100644
index 90c40f22ec70..000000000000
--- a/drivers/tty/serial/max3107-aava.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- *  max3107.c - spi uart protocol driver for Maxim 3107
- *  Based on max3100.c
- *	by Christian Pellegrin <chripell@evolware.org>
- *  and	max3110.c
- *	by Feng Tang <feng.tang@intel.com>
- *
- *  Copyright (C) Aavamobile 2009
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- *  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.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/spi/spi.h>
-#include <linux/freezer.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/sfi.h>
-#include <linux/module.h>
-#include <asm/mrst.h>
-#include "max3107.h"
-
-/* GPIO direction to input function */
-static int max3107_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
-{
-	struct max3107_port *s = container_of(chip, struct max3107_port, chip);
-	u16 buf[1];		/* Buffer for SPI transfer */
-
-	if (offset >= MAX3107_GPIO_COUNT) {
-		dev_err(&s->spi->dev, "Invalid GPIO\n");
-		return -EINVAL;
-	}
-
-	/* Read current GPIO configuration register */
-	buf[0] = MAX3107_GPIOCFG_REG;
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
-		dev_err(&s->spi->dev, "SPI transfer GPIO read failed\n");
-		return -EIO;
-	}
-	buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-
-	/* Set GPIO to input */
-	buf[0] &= ~(0x0001 << offset);
-
-	/* Write new GPIO configuration register value */
-	buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIOCFG_REG);
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, NULL, 2)) {
-		dev_err(&s->spi->dev, "SPI transfer GPIO write failed\n");
-		return -EIO;
-	}
-	return 0;
-}
-
-/* GPIO direction to output function */
-static int max3107_gpio_direction_out(struct gpio_chip *chip, unsigned offset,
-					int value)
-{
-	struct max3107_port *s = container_of(chip, struct max3107_port, chip);
-	u16 buf[2];	/* Buffer for SPI transfers */
-
-	if (offset >= MAX3107_GPIO_COUNT) {
-		dev_err(&s->spi->dev, "Invalid GPIO\n");
-		return -EINVAL;
-	}
-
-	/* Read current GPIO configuration and data registers */
-	buf[0] = MAX3107_GPIOCFG_REG;
-	buf[1] = MAX3107_GPIODATA_REG;
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 4)) {
-		dev_err(&s->spi->dev, "SPI transfer gpio failed\n");
-		return -EIO;
-	}
-	buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-	buf[1] &= MAX3107_SPI_RX_DATA_MASK;
-
-	/* Set GPIO to output */
-	buf[0] |= (0x0001 << offset);
-	/* Set value */
-	if (value)
-		buf[1] |= (0x0001 << offset);
-	else
-		buf[1] &= ~(0x0001 << offset);
-
-	/* Write new GPIO configuration and data register values */
-	buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIOCFG_REG);
-	buf[1] |= (MAX3107_WRITE_BIT | MAX3107_GPIODATA_REG);
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, NULL, 4)) {
-		dev_err(&s->spi->dev,
-			"SPI transfer for GPIO conf data w failed\n");
-		return -EIO;
-	}
-	return 0;
-}
-
-/* GPIO value query function */
-static int max3107_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
-	struct max3107_port *s = container_of(chip, struct max3107_port, chip);
-	u16 buf[1];	/* Buffer for SPI transfer */
-
-	if (offset >= MAX3107_GPIO_COUNT) {
-		dev_err(&s->spi->dev, "Invalid GPIO\n");
-		return -EINVAL;
-	}
-
-	/* Read current GPIO data register */
-	buf[0] = MAX3107_GPIODATA_REG;
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
-		dev_err(&s->spi->dev, "SPI transfer GPIO data r failed\n");
-		return -EIO;
-	}
-	buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-
-	/* Return value */
-	return buf[0] & (0x0001 << offset);
-}
-
-/* GPIO value set function */
-static void max3107_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
-	struct max3107_port *s = container_of(chip, struct max3107_port, chip);
-	u16 buf[2];	/* Buffer for SPI transfers */
-
-	if (offset >= MAX3107_GPIO_COUNT) {
-		dev_err(&s->spi->dev, "Invalid GPIO\n");
-		return;
-	}
-
-	/* Read current GPIO configuration registers*/
-	buf[0] = MAX3107_GPIODATA_REG;
-	buf[1] = MAX3107_GPIOCFG_REG;
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 4)) {
-		dev_err(&s->spi->dev,
-			"SPI transfer for GPIO data and config read failed\n");
-		return;
-	}
-	buf[0] &= MAX3107_SPI_RX_DATA_MASK;
-	buf[1] &= MAX3107_SPI_RX_DATA_MASK;
-
-	if (!(buf[1] & (0x0001 << offset))) {
-		/* Configured as input, can't set value */
-		dev_warn(&s->spi->dev,
-				"Trying to set value for input GPIO\n");
-		return;
-	}
-
-	/* Set value */
-	if (value)
-		buf[0] |= (0x0001 << offset);
-	else
-		buf[0] &= ~(0x0001 << offset);
-
-	/* Write new GPIO data register value */
-	buf[0] |= (MAX3107_WRITE_BIT | MAX3107_GPIODATA_REG);
-	/* Perform SPI transfer */
-	if (max3107_rw(s, (u8 *)buf, NULL, 2))
-		dev_err(&s->spi->dev, "SPI transfer GPIO data w failed\n");
-}
-
-/* GPIO chip data */
-static struct gpio_chip max3107_gpio_chip = {
-	.owner			= THIS_MODULE,
-	.direction_input	= max3107_gpio_direction_in,
-	.direction_output	= max3107_gpio_direction_out,
-	.get			= max3107_gpio_get,
-	.set			= max3107_gpio_set,
-	.can_sleep		= 1,
-	.base			= MAX3107_GPIO_BASE,
-	.ngpio			= MAX3107_GPIO_COUNT,
-};
-
-/**
- *	max3107_aava_reset	-	reset on AAVA systems
- *	@spi: The SPI device we are probing
- *
- *	Reset the device ready for probing.
- */
-
-static int max3107_aava_reset(struct spi_device *spi)
-{
-	/* Reset the chip */
-	if (gpio_request(MAX3107_RESET_GPIO, "max3107")) {
-		pr_err("Requesting RESET GPIO failed\n");
-		return -EIO;
-	}
-	if (gpio_direction_output(MAX3107_RESET_GPIO, 0)) {
-		pr_err("Setting RESET GPIO to 0 failed\n");
-		gpio_free(MAX3107_RESET_GPIO);
-		return -EIO;
-	}
-	msleep(MAX3107_RESET_DELAY);
-	if (gpio_direction_output(MAX3107_RESET_GPIO, 1)) {
-		pr_err("Setting RESET GPIO to 1 failed\n");
-		gpio_free(MAX3107_RESET_GPIO);
-		return -EIO;
-	}
-	gpio_free(MAX3107_RESET_GPIO);
-	msleep(MAX3107_WAKEUP_DELAY);
-	return 0;
-}
-
-static int max3107_aava_configure(struct max3107_port *s)
-{
-	int retval;
-
-	/* Initialize GPIO chip data */
-	s->chip = max3107_gpio_chip;
-	s->chip.label = s->spi->modalias;
-	s->chip.dev = &s->spi->dev;
-
-	/* Add GPIO chip */
-	retval = gpiochip_add(&s->chip);
-	if (retval) {
-		dev_err(&s->spi->dev, "Adding GPIO chip failed\n");
-		return retval;
-	}
-
-	/* Temporary fix for EV2 boot problems, set modem reset to 0 */
-	max3107_gpio_direction_out(&s->chip, 3, 0);
-	return 0;
-}
-
-#if 0
-/* This will get enabled once we have the board stuff merged for this
-   specific case */
-
-static const struct baud_table brg13_ext[] = {
-	{ 300,    MAX3107_BRG13_B300 },
-	{ 600,    MAX3107_BRG13_B600 },
-	{ 1200,   MAX3107_BRG13_B1200 },
-	{ 2400,   MAX3107_BRG13_B2400 },
-	{ 4800,   MAX3107_BRG13_B4800 },
-	{ 9600,   MAX3107_BRG13_B9600 },
-	{ 19200,  MAX3107_BRG13_B19200 },
-	{ 57600,  MAX3107_BRG13_B57600 },
-	{ 115200, MAX3107_BRG13_B115200 },
-	{ 230400, MAX3107_BRG13_B230400 },
-	{ 460800, MAX3107_BRG13_B460800 },
-	{ 921600, MAX3107_BRG13_B921600 },
-	{ 0, 0 }
-};
-
-static void max3107_aava_init(struct max3107_port *s)
-{
-	/*override for AAVA SC specific*/
-	if (mrst_platform_id() == MRST_PLATFORM_AAVA_SC) {
-		if (get_koski_build_id() <= KOSKI_EV2)
-			if (s->ext_clk) {
-				s->brg_cfg = MAX3107_BRG13_B9600;
-				s->baud_tbl = (struct baud_table *)brg13_ext;
-			}
-	}
-}
-#endif
-
-static int __devexit max3107_aava_remove(struct spi_device *spi)
-{
-	struct max3107_port *s = dev_get_drvdata(&spi->dev);
-
-	/* Remove GPIO chip */
-	if (gpiochip_remove(&s->chip))
-		dev_warn(&spi->dev, "Removing GPIO chip failed\n");
-
-	/* Then do the default remove */
-	return max3107_remove(spi);
-}
-
-/* Platform data */
-static struct max3107_plat aava_plat_data = {
-	.loopback               = 0,
-	.ext_clk                = 1,
-/*	.init			= max3107_aava_init, */
-	.configure		= max3107_aava_configure,
-	.hw_suspend		= max3107_hw_susp,
-	.polled_mode            = 0,
-	.poll_time              = 0,
-};
-
-
-static int __devinit max3107_probe_aava(struct spi_device *spi)
-{
-	int err = max3107_aava_reset(spi);
-	if (err < 0)
-		return err;
-	return max3107_probe(spi, &aava_plat_data);
-}
-
-/* Spi driver data */
-static struct spi_driver max3107_driver = {
-	.driver = {
-		.name		= "aava-max3107",
-		.bus		= &spi_bus_type,
-		.owner		= THIS_MODULE,
-	},
-	.probe		= max3107_probe_aava,
-	.remove		= __devexit_p(max3107_aava_remove),
-	.suspend	= max3107_suspend,
-	.resume		= max3107_resume,
-};
-
-/* Driver init function */
-static int __init max3107_init(void)
-{
-	return spi_register_driver(&max3107_driver);
-}
-
-/* Driver exit function */
-static void __exit max3107_exit(void)
-{
-	spi_unregister_driver(&max3107_driver);
-}
-
-module_init(max3107_init);
-module_exit(max3107_exit);
-
-MODULE_DESCRIPTION("MAX3107 driver");
-MODULE_AUTHOR("Aavamobile");
-MODULE_ALIAS("spi:aava-max3107");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/max3107.c b/drivers/tty/serial/max3107.c
index 7827000db4f5..17c7ba805d98 100644
--- a/drivers/tty/serial/max3107.c
+++ b/drivers/tty/serial/max3107.c
@@ -1181,7 +1181,6 @@ static int max3107_probe_generic(struct spi_device *spi)
 static struct spi_driver max3107_driver = {
 	.driver = {
 		.name		= "max3107",
-		.bus		= &spi_bus_type,
 		.owner		= THIS_MODULE,
 	},
 	.probe		= max3107_probe_generic,
diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c
index e272d3919c67..a9234ba8f8d5 100644
--- a/drivers/tty/serial/mfd.c
+++ b/drivers/tty/serial/mfd.c
@@ -1154,7 +1154,6 @@ serial_hsu_console_setup(struct console *co, char *options)
 	int bits = 8;
 	int parity = 'n';
 	int flow = 'n';
-	int ret;
 
 	if (co->index == -1 || co->index >= serial_hsu_reg.nr)
 		co->index = 0;
@@ -1165,9 +1164,7 @@ serial_hsu_console_setup(struct console *co, char *options)
 	if (options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);
 
-	ret = uart_set_options(&up->port, co, baud, parity, bits, flow);
-
-	return ret;
+	return uart_set_options(&up->port, co, baud, parity, bits, flow);
 }
 
 static struct console serial_hsu_console = {
@@ -1176,9 +1173,13 @@ static struct console serial_hsu_console = {
 	.device		= uart_console_device,
 	.setup		= serial_hsu_console_setup,
 	.flags		= CON_PRINTBUFFER,
-	.index		= 2,
+	.index		= -1,
 	.data		= &serial_hsu_reg,
 };
+
+#define SERIAL_HSU_CONSOLE	(&serial_hsu_console)
+#else
+#define SERIAL_HSU_CONSOLE	NULL
 #endif
 
 struct uart_ops serial_hsu_pops = {
@@ -1208,6 +1209,7 @@ static struct uart_driver serial_hsu_reg = {
 	.major		= TTY_MAJOR,
 	.minor		= 128,
 	.nr		= 3,
+	.cons		= SERIAL_HSU_CONSOLE,
 };
 
 #ifdef CONFIG_PM
@@ -1342,12 +1344,6 @@ static int serial_hsu_probe(struct pci_dev *pdev,
 		}
 		uart_add_one_port(&serial_hsu_reg, &uport->port);
 
-#ifdef CONFIG_SERIAL_MFD_HSU_CONSOLE
-		if (index == 2) {
-			register_console(&serial_hsu_console);
-			uport->port.cons = &serial_hsu_console;
-		}
-#endif
 		pci_set_drvdata(pdev, uport);
 	}
 
diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c
index 4c309e869903..df2a2240a3ae 100644
--- a/drivers/tty/serial/mrst_max3110.c
+++ b/drivers/tty/serial/mrst_max3110.c
@@ -876,7 +876,6 @@ static int __devexit serial_m3110_remove(struct spi_device *dev)
 static struct spi_driver uart_max3110_driver = {
 	.driver = {
 			.name	= "spi_max3111",
-			.bus	= &spi_bus_type,
 			.owner	= THIS_MODULE,
 	},
 	.probe		= serial_m3110_probe,
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
index 60c6eb850265..5e85e1e14c44 100644
--- a/drivers/tty/serial/msm_serial_hs.c
+++ b/drivers/tty/serial/msm_serial_hs.c
@@ -422,9 +422,9 @@ static int __devexit msm_hs_remove(struct platform_device *pdev)
 		      msm_uport->rx.rbuffer);
 	dma_pool_destroy(msm_uport->rx.pool);
 
-	dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32 *),
+	dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32),
 			 DMA_TO_DEVICE);
-	dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32 *),
+	dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32),
 			 DMA_TO_DEVICE);
 	dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr, sizeof(dmov_box),
 			 DMA_TO_DEVICE);
@@ -812,7 +812,7 @@ static void msm_hs_submit_tx_locked(struct uart_port *uport)
 	*tx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(tx->mapped_cmd_ptr);
 
 	dma_sync_single_for_device(uport->dev, tx->mapped_cmd_ptr_ptr,
-				   sizeof(u32 *), DMA_TO_DEVICE);
+				   sizeof(u32), DMA_TO_DEVICE);
 
 	/* Save tx_count to use in Callback */
 	tx->tx_count = tx_count;
@@ -1087,12 +1087,10 @@ static void msm_hs_config_port(struct uart_port *uport, int cfg_flags)
 }
 
 /*  Handle CTS changes (Called from interrupt handler) */
-static void msm_hs_handle_delta_cts(struct uart_port *uport)
+static void msm_hs_handle_delta_cts_locked(struct uart_port *uport)
 {
-	unsigned long flags;
 	struct msm_hs_port *msm_uport = UARTDM_TO_MSM(uport);
 
-	spin_lock_irqsave(&uport->lock, flags);
 	clk_enable(msm_uport->clk);
 
 	/* clear interrupt */
@@ -1100,7 +1098,6 @@ static void msm_hs_handle_delta_cts(struct uart_port *uport)
 	uport->icount.cts++;
 
 	clk_disable(msm_uport->clk);
-	spin_unlock_irqrestore(&uport->lock, flags);
 
 	/* clear the IOCTL TIOCMIWAIT if called */
 	wake_up_interruptible(&uport->state->port.delta_msr_wait);
@@ -1248,7 +1245,7 @@ static irqreturn_t msm_hs_isr(int irq, void *dev)
 
 	/* Change in CTS interrupt */
 	if (isr_status & UARTDM_ISR_DELTA_CTS_BMSK)
-		msm_hs_handle_delta_cts(uport);
+		msm_hs_handle_delta_cts_locked(uport);
 
 	spin_unlock_irqrestore(&uport->lock, flags);
 
@@ -1537,7 +1534,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
 	if (!tx->command_ptr)
 		return -ENOMEM;
 
-	tx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA);
+	tx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA);
 	if (!tx->command_ptr_ptr) {
 		ret = -ENOMEM;
 		goto err_tx_command_ptr_ptr;
@@ -1547,7 +1544,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
 					    sizeof(dmov_box), DMA_TO_DEVICE);
 	tx->mapped_cmd_ptr_ptr = dma_map_single(uport->dev,
 						tx->command_ptr_ptr,
-						sizeof(u32 *), DMA_TO_DEVICE);
+						sizeof(u32), DMA_TO_DEVICE);
 	tx->xfer.cmdptr = DMOV_CMD_ADDR(tx->mapped_cmd_ptr_ptr);
 
 	init_waitqueue_head(&rx->wait);
@@ -1575,7 +1572,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
 		goto err_rx_command_ptr;
 	}
 
-	rx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA);
+	rx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA);
 	if (!rx->command_ptr_ptr) {
 		pr_err("%s(): cannot allocate rx->command_ptr_ptr", __func__);
 		ret = -ENOMEM;
@@ -1593,7 +1590,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
 	*rx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(rx->mapped_cmd_ptr);
 
 	rx->cmdptr_dmaaddr = dma_map_single(uport->dev, rx->command_ptr_ptr,
-					    sizeof(u32 *), DMA_TO_DEVICE);
+					    sizeof(u32), DMA_TO_DEVICE);
 	rx->xfer.cmdptr = DMOV_CMD_ADDR(rx->cmdptr_dmaaddr);
 
 	INIT_WORK(&rx->tty_work, msm_hs_tty_flip_buffer_work);
@@ -1609,7 +1606,7 @@ err_dma_pool_alloc:
 	dma_pool_destroy(msm_uport->rx.pool);
 err_dma_pool_create:
 	dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr_ptr,
-				sizeof(u32 *), DMA_TO_DEVICE);
+				sizeof(u32), DMA_TO_DEVICE);
 	dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr,
 				sizeof(dmov_box), DMA_TO_DEVICE);
 	kfree(msm_uport->tx.command_ptr_ptr);
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 7e02c9c344fe..55fd362b9879 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -145,11 +145,12 @@ static inline void mxs_auart_tx_chars(struct mxs_auart_port *s)
 			writel(xmit->buf[xmit->tail],
 				     s->port.membase + AUART_DATA);
 			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-			if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-				uart_write_wakeup(&s->port);
 		} else
 			break;
 	}
+	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+		uart_write_wakeup(&s->port);
+
 	if (uart_circ_empty(&(s->port.state->xmit)))
 		writel(AUART_INTR_TXIEN,
 			     s->port.membase + AUART_INTR_CLR);
@@ -424,7 +425,7 @@ static int mxs_auart_startup(struct uart_port *u)
 {
 	struct mxs_auart_port *s = to_auart_port(u);
 
-	clk_enable(s->clk);
+	clk_prepare_enable(s->clk);
 
 	writel(AUART_CTRL0_CLKGATE, u->membase + AUART_CTRL0_CLR);
 
@@ -453,7 +454,7 @@ static void mxs_auart_shutdown(struct uart_port *u)
 	writel(AUART_INTR_RXIEN | AUART_INTR_RTIEN | AUART_INTR_CTSMIEN,
 			u->membase + AUART_INTR_CLR);
 
-	clk_disable(s->clk);
+	clk_disable_unprepare(s->clk);
 }
 
 static unsigned int mxs_auart_tx_empty(struct uart_port *u)
@@ -634,7 +635,7 @@ auart_console_setup(struct console *co, char *options)
 	if (!s)
 		return -ENODEV;
 
-	clk_enable(s->clk);
+	clk_prepare_enable(s->clk);
 
 	if (options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -643,7 +644,7 @@ auart_console_setup(struct console *co, char *options)
 
 	ret = uart_set_options(&s->port, co, baud, parity, bits, flow);
 
-	clk_disable(s->clk);
+	clk_disable_unprepare(s->clk);
 
 	return ret;
 }
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 5e713d3ef1f4..1c2426931484 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -37,17 +37,24 @@
 #include <linux/clk.h>
 #include <linux/serial_core.h>
 #include <linux/irq.h>
+#include <linux/pm_runtime.h>
+#include <linux/of.h>
 
 #include <plat/dma.h>
 #include <plat/dmtimer.h>
 #include <plat/omap-serial.h>
 
+#define DEFAULT_CLK_SPEED 48000000 /* 48Mhz*/
+
 static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS];
 
 /* Forward declaration of functions */
 static void uart_tx_dma_callback(int lch, u16 ch_status, void *data);
-static void serial_omap_rx_timeout(unsigned long uart_no);
+static void serial_omap_rxdma_poll(unsigned long uart_no);
 static int serial_omap_start_rxdma(struct uart_omap_port *up);
+static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
+
+static struct workqueue_struct *serial_omap_uart_wq;
 
 static inline unsigned int serial_in(struct uart_omap_port *up, int offset)
 {
@@ -102,6 +109,8 @@ static void serial_omap_stop_rxdma(struct uart_omap_port *up)
 		omap_free_dma(up->uart_dma.rx_dma_channel);
 		up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
 		up->uart_dma.rx_dma_used = false;
+		pm_runtime_mark_last_busy(&up->pdev->dev);
+		pm_runtime_put_autosuspend(&up->pdev->dev);
 	}
 }
 
@@ -109,9 +118,12 @@ static void serial_omap_enable_ms(struct uart_port *port)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 
-	dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line);
+
+	pm_runtime_get_sync(&up->pdev->dev);
 	up->ier |= UART_IER_MSI;
 	serial_out(up, UART_IER, up->ier);
+	pm_runtime_put(&up->pdev->dev);
 }
 
 static void serial_omap_stop_tx(struct uart_port *port)
@@ -129,30 +141,40 @@ static void serial_omap_stop_tx(struct uart_port *port)
 		omap_stop_dma(up->uart_dma.tx_dma_channel);
 		omap_free_dma(up->uart_dma.tx_dma_channel);
 		up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
+		pm_runtime_mark_last_busy(&up->pdev->dev);
+		pm_runtime_put_autosuspend(&up->pdev->dev);
 	}
 
+	pm_runtime_get_sync(&up->pdev->dev);
 	if (up->ier & UART_IER_THRI) {
 		up->ier &= ~UART_IER_THRI;
 		serial_out(up, UART_IER, up->ier);
 	}
+
+	pm_runtime_mark_last_busy(&up->pdev->dev);
+	pm_runtime_put_autosuspend(&up->pdev->dev);
 }
 
 static void serial_omap_stop_rx(struct uart_port *port)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 
+	pm_runtime_get_sync(&up->pdev->dev);
 	if (up->use_dma)
 		serial_omap_stop_rxdma(up);
 	up->ier &= ~UART_IER_RLSI;
 	up->port.read_status_mask &= ~UART_LSR_DR;
 	serial_out(up, UART_IER, up->ier);
+	pm_runtime_mark_last_busy(&up->pdev->dev);
+	pm_runtime_put_autosuspend(&up->pdev->dev);
 }
 
-static inline void receive_chars(struct uart_omap_port *up, int *status)
+static inline void receive_chars(struct uart_omap_port *up,
+		unsigned int *status)
 {
 	struct tty_struct *tty = up->port.state->port.tty;
-	unsigned int flag;
-	unsigned char ch, lsr = *status;
+	unsigned int flag, lsr = *status;
+	unsigned char ch = 0;
 	int max_count = 256;
 
 	do {
@@ -262,7 +284,10 @@ static void serial_omap_start_tx(struct uart_port *port)
 	int ret = 0;
 
 	if (!up->use_dma) {
+		pm_runtime_get_sync(&up->pdev->dev);
 		serial_omap_enable_ier_thri(up);
+		pm_runtime_mark_last_busy(&up->pdev->dev);
+		pm_runtime_put_autosuspend(&up->pdev->dev);
 		return;
 	}
 
@@ -272,6 +297,7 @@ static void serial_omap_start_tx(struct uart_port *port)
 	xmit = &up->port.state->xmit;
 
 	if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) {
+		pm_runtime_get_sync(&up->pdev->dev);
 		ret = omap_request_dma(up->uart_dma.uart_dma_tx,
 				"UART Tx DMA",
 				(void *)uart_tx_dma_callback, up,
@@ -354,9 +380,13 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id)
 	unsigned int iir, lsr;
 	unsigned long flags;
 
+	pm_runtime_get_sync(&up->pdev->dev);
 	iir = serial_in(up, UART_IIR);
-	if (iir & UART_IIR_NO_INT)
+	if (iir & UART_IIR_NO_INT) {
+		pm_runtime_mark_last_busy(&up->pdev->dev);
+		pm_runtime_put_autosuspend(&up->pdev->dev);
 		return IRQ_NONE;
+	}
 
 	spin_lock_irqsave(&up->port.lock, flags);
 	lsr = serial_in(up, UART_LSR);
@@ -378,6 +408,9 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id)
 		transmit_chars(up);
 
 	spin_unlock_irqrestore(&up->port.lock, flags);
+	pm_runtime_mark_last_busy(&up->pdev->dev);
+	pm_runtime_put_autosuspend(&up->pdev->dev);
+
 	up->port_activity = jiffies;
 	return IRQ_HANDLED;
 }
@@ -388,22 +421,26 @@ static unsigned int serial_omap_tx_empty(struct uart_port *port)
 	unsigned long flags = 0;
 	unsigned int ret = 0;
 
-	dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->pdev->id);
+	pm_runtime_get_sync(&up->pdev->dev);
+	dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line);
 	spin_lock_irqsave(&up->port.lock, flags);
 	ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
 	spin_unlock_irqrestore(&up->port.lock, flags);
-
+	pm_runtime_put(&up->pdev->dev);
 	return ret;
 }
 
 static unsigned int serial_omap_get_mctrl(struct uart_port *port)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
-	unsigned char status;
+	unsigned int status;
 	unsigned int ret = 0;
 
+	pm_runtime_get_sync(&up->pdev->dev);
 	status = check_modem_status(up);
-	dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->pdev->id);
+	pm_runtime_put(&up->pdev->dev);
+
+	dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);
 
 	if (status & UART_MSR_DCD)
 		ret |= TIOCM_CAR;
@@ -421,7 +458,7 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 	unsigned char mcr = 0;
 
-	dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line);
 	if (mctrl & TIOCM_RTS)
 		mcr |= UART_MCR_RTS;
 	if (mctrl & TIOCM_DTR)
@@ -433,8 +470,11 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	if (mctrl & TIOCM_LOOP)
 		mcr |= UART_MCR_LOOP;
 
-	mcr |= up->mcr;
-	serial_out(up, UART_MCR, mcr);
+	pm_runtime_get_sync(&up->pdev->dev);
+	up->mcr = serial_in(up, UART_MCR);
+	up->mcr |= mcr;
+	serial_out(up, UART_MCR, up->mcr);
+	pm_runtime_put(&up->pdev->dev);
 }
 
 static void serial_omap_break_ctl(struct uart_port *port, int break_state)
@@ -442,7 +482,8 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state)
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 	unsigned long flags = 0;
 
-	dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line);
+	pm_runtime_get_sync(&up->pdev->dev);
 	spin_lock_irqsave(&up->port.lock, flags);
 	if (break_state == -1)
 		up->lcr |= UART_LCR_SBC;
@@ -450,6 +491,7 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state)
 		up->lcr &= ~UART_LCR_SBC;
 	serial_out(up, UART_LCR, up->lcr);
 	spin_unlock_irqrestore(&up->port.lock, flags);
+	pm_runtime_put(&up->pdev->dev);
 }
 
 static int serial_omap_startup(struct uart_port *port)
@@ -466,8 +508,9 @@ static int serial_omap_startup(struct uart_port *port)
 	if (retval)
 		return retval;
 
-	dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);
 
+	pm_runtime_get_sync(&up->pdev->dev);
 	/*
 	 * Clear the FIFO buffers and disable them.
 	 * (they will be reenabled in set_termios())
@@ -505,8 +548,8 @@ static int serial_omap_startup(struct uart_port *port)
 			(dma_addr_t *)&(up->uart_dma.tx_buf_dma_phys),
 			0);
 		init_timer(&(up->uart_dma.rx_timer));
-		up->uart_dma.rx_timer.function = serial_omap_rx_timeout;
-		up->uart_dma.rx_timer.data = up->pdev->id;
+		up->uart_dma.rx_timer.function = serial_omap_rxdma_poll;
+		up->uart_dma.rx_timer.data = up->port.line;
 		/* Currently the buffer size is 4KB. Can increase it */
 		up->uart_dma.rx_buf = dma_alloc_coherent(NULL,
 			up->uart_dma.rx_buf_size,
@@ -523,6 +566,8 @@ static int serial_omap_startup(struct uart_port *port)
 	/* Enable module level wake up */
 	serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP);
 
+	pm_runtime_mark_last_busy(&up->pdev->dev);
+	pm_runtime_put_autosuspend(&up->pdev->dev);
 	up->port_activity = jiffies;
 	return 0;
 }
@@ -532,7 +577,9 @@ static void serial_omap_shutdown(struct uart_port *port)
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 	unsigned long flags = 0;
 
-	dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line);
+
+	pm_runtime_get_sync(&up->pdev->dev);
 	/*
 	 * Disable interrupts from this port
 	 */
@@ -566,6 +613,8 @@ static void serial_omap_shutdown(struct uart_port *port)
 			up->uart_dma.rx_buf_dma_phys);
 		up->uart_dma.rx_buf = NULL;
 	}
+
+	pm_runtime_put(&up->pdev->dev);
 	free_irq(up->port.irq, up);
 }
 
@@ -573,8 +622,6 @@ static inline void
 serial_omap_configure_xonxoff
 		(struct uart_omap_port *up, struct ktermios *termios)
 {
-	unsigned char efr = 0;
-
 	up->lcr = serial_in(up, UART_LCR);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	up->efr = serial_in(up, UART_EFR);
@@ -584,8 +631,7 @@ serial_omap_configure_xonxoff
 	serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]);
 
 	/* clear SW control mode bits */
-	efr = up->efr;
-	efr &= OMAP_UART_SW_CLR;
+	up->efr &= OMAP_UART_SW_CLR;
 
 	/*
 	 * IXON Flag:
@@ -593,7 +639,7 @@ serial_omap_configure_xonxoff
 	 * Transmit XON1, XOFF1
 	 */
 	if (termios->c_iflag & IXON)
-		efr |= OMAP_UART_SW_TX;
+		up->efr |= OMAP_UART_SW_TX;
 
 	/*
 	 * IXOFF Flag:
@@ -601,7 +647,7 @@ serial_omap_configure_xonxoff
 	 * Receiver compares XON1, XOFF1.
 	 */
 	if (termios->c_iflag & IXOFF)
-		efr |= OMAP_UART_SW_RX;
+		up->efr |= OMAP_UART_SW_RX;
 
 	serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
@@ -624,13 +670,21 @@ serial_omap_configure_xonxoff
 	 * load the new software flow control mode IXON or IXOFF
 	 * and restore the UARTi.EFR_REG[4] ENHANCED_EN value.
 	 */
-	serial_out(up, UART_EFR, efr | UART_EFR_SCD);
+	serial_out(up, UART_EFR, up->efr | UART_EFR_SCD);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 
 	serial_out(up, UART_MCR, up->mcr & ~UART_MCR_TCRTLR);
 	serial_out(up, UART_LCR, up->lcr);
 }
 
+static void serial_omap_uart_qos_work(struct work_struct *work)
+{
+	struct uart_omap_port *up = container_of(work, struct uart_omap_port,
+						qos_work);
+
+	pm_qos_update_request(&up->pm_qos_request, up->latency);
+}
+
 static void
 serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 			struct ktermios *old)
@@ -671,6 +725,16 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/13);
 	quot = serial_omap_get_divisor(port, baud);
 
+	/* calculate wakeup latency constraint */
+	up->calc_latency = (1000000 * up->port.fifosize) /
+				(1000 * baud / 8);
+	up->latency = up->calc_latency;
+	schedule_work(&up->qos_work);
+
+	up->dll = quot & 0xff;
+	up->dlh = quot >> 8;
+	up->mdr1 = UART_OMAP_MDR1_DISABLE;
+
 	up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 |
 			UART_FCR_ENABLE_FIFO;
 	if (up->use_dma)
@@ -680,6 +744,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Ok, we're now changing the port state. Do it with
 	 * interrupts disabled.
 	 */
+	pm_runtime_get_sync(&up->pdev->dev);
 	spin_lock_irqsave(&up->port.lock, flags);
 
 	/*
@@ -723,6 +788,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 		up->ier |= UART_IER_MSI;
 	serial_out(up, UART_IER, up->ier);
 	serial_out(up, UART_LCR, cval);		/* reset DLAB */
+	up->lcr = cval;
+	up->scr = OMAP_UART_SCR_TX_EMPTY;
 
 	/* FIFOs and DMA Settings */
 
@@ -749,17 +816,22 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	if (up->use_dma) {
 		serial_out(up, UART_TI752_TLR, 0);
-		serial_out(up, UART_OMAP_SCR,
-			(UART_FCR_TRIGGER_4 | UART_FCR_TRIGGER_8));
+		up->scr |= (UART_FCR_TRIGGER_4 | UART_FCR_TRIGGER_8);
 	}
 
+	serial_out(up, UART_OMAP_SCR, up->scr);
+
 	serial_out(up, UART_EFR, up->efr);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_out(up, UART_MCR, up->mcr);
 
 	/* Protocol, Baud Rate, and Interrupt Settings */
 
-	serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
+	if (up->errata & UART_ERRATA_i202_MDR1_ACCESS)
+		serial_omap_mdr1_errataset(up, up->mdr1);
+	else
+		serial_out(up, UART_OMAP_MDR1, up->mdr1);
+
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	up->efr = serial_in(up, UART_EFR);
@@ -769,8 +841,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	serial_out(up, UART_IER, 0);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
-	serial_out(up, UART_DLL, quot & 0xff);          /* LS of divisor */
-	serial_out(up, UART_DLM, quot >> 8);            /* MS of divisor */
+	serial_out(up, UART_DLL, up->dll);	/* LS of divisor */
+	serial_out(up, UART_DLM, up->dlh);	/* MS of divisor */
 
 	serial_out(up, UART_LCR, 0);
 	serial_out(up, UART_IER, up->ier);
@@ -780,9 +852,14 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	serial_out(up, UART_LCR, cval);
 
 	if (baud > 230400 && baud != 3000000)
-		serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_13X_MODE);
+		up->mdr1 = UART_OMAP_MDR1_13X_MODE;
 	else
-		serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE);
+		up->mdr1 = UART_OMAP_MDR1_16X_MODE;
+
+	if (up->errata & UART_ERRATA_i202_MDR1_ACCESS)
+		serial_omap_mdr1_errataset(up, up->mdr1);
+	else
+		serial_out(up, UART_OMAP_MDR1, up->mdr1);
 
 	/* Hardware Flow Control Configuration */
 
@@ -809,7 +886,8 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	serial_omap_configure_xonxoff(up, termios);
 
 	spin_unlock_irqrestore(&up->port.lock, flags);
-	dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->pdev->id);
+	pm_runtime_put(&up->pdev->dev);
+	dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);
 }
 
 static void
@@ -819,7 +897,9 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 	unsigned char efr;
 
-	dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line);
+
+	pm_runtime_get_sync(&up->pdev->dev);
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	efr = serial_in(up, UART_EFR);
 	serial_out(up, UART_EFR, efr | UART_EFR_ECB);
@@ -829,6 +909,15 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_out(up, UART_EFR, efr);
 	serial_out(up, UART_LCR, 0);
+
+	if (!device_may_wakeup(&up->pdev->dev)) {
+		if (!state)
+			pm_runtime_forbid(&up->pdev->dev);
+		else
+			pm_runtime_allow(&up->pdev->dev);
+	}
+
+	pm_runtime_put(&up->pdev->dev);
 }
 
 static void serial_omap_release_port(struct uart_port *port)
@@ -847,7 +936,7 @@ static void serial_omap_config_port(struct uart_port *port, int flags)
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 
 	dev_dbg(up->port.dev, "serial_omap_config_port+%d\n",
-							up->pdev->id);
+							up->port.line);
 	up->port.type = PORT_OMAP;
 }
 
@@ -864,7 +953,7 @@ serial_omap_type(struct uart_port *port)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
 
-	dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->pdev->id);
+	dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line);
 	return up->name;
 }
 
@@ -906,19 +995,26 @@ static inline void wait_for_xmitr(struct uart_omap_port *up)
 static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
+
+	pm_runtime_get_sync(&up->pdev->dev);
 	wait_for_xmitr(up);
 	serial_out(up, UART_TX, ch);
+	pm_runtime_put(&up->pdev->dev);
 }
 
 static int serial_omap_poll_get_char(struct uart_port *port)
 {
 	struct uart_omap_port *up = (struct uart_omap_port *)port;
-	unsigned int status = serial_in(up, UART_LSR);
+	unsigned int status;
 
+	pm_runtime_get_sync(&up->pdev->dev);
+	status = serial_in(up, UART_LSR);
 	if (!(status & UART_LSR_DR))
 		return NO_POLL_CHAR;
 
-	return serial_in(up, UART_RX);
+	status = serial_in(up, UART_RX);
+	pm_runtime_put(&up->pdev->dev);
+	return status;
 }
 
 #endif /* CONFIG_CONSOLE_POLL */
@@ -946,6 +1042,8 @@ serial_omap_console_write(struct console *co, const char *s,
 	unsigned int ier;
 	int locked = 1;
 
+	pm_runtime_get_sync(&up->pdev->dev);
+
 	local_irq_save(flags);
 	if (up->port.sysrq)
 		locked = 0;
@@ -978,6 +1076,8 @@ serial_omap_console_write(struct console *co, const char *s,
 	if (up->msr_saved_flags)
 		check_modem_status(up);
 
+	pm_runtime_mark_last_busy(&up->pdev->dev);
+	pm_runtime_put_autosuspend(&up->pdev->dev);
 	if (locked)
 		spin_unlock(&up->port.lock);
 	local_irq_restore(flags);
@@ -1014,7 +1114,7 @@ static struct console serial_omap_console = {
 
 static void serial_omap_add_console_port(struct uart_omap_port *up)
 {
-	serial_omap_console_ports[up->pdev->id] = up;
+	serial_omap_console_ports[up->port.line] = up;
 }
 
 #define OMAP_CONSOLE	(&serial_omap_console)
@@ -1060,26 +1160,30 @@ static struct uart_driver serial_omap_reg = {
 	.cons		= OMAP_CONSOLE,
 };
 
-static int
-serial_omap_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int serial_omap_suspend(struct device *dev)
 {
-	struct uart_omap_port *up = platform_get_drvdata(pdev);
+	struct uart_omap_port *up = dev_get_drvdata(dev);
 
-	if (up)
+	if (up) {
 		uart_suspend_port(&serial_omap_reg, &up->port);
+		flush_work_sync(&up->qos_work);
+	}
+
 	return 0;
 }
 
-static int serial_omap_resume(struct platform_device *dev)
+static int serial_omap_resume(struct device *dev)
 {
-	struct uart_omap_port *up = platform_get_drvdata(dev);
+	struct uart_omap_port *up = dev_get_drvdata(dev);
 
 	if (up)
 		uart_resume_port(&serial_omap_reg, &up->port);
 	return 0;
 }
+#endif
 
-static void serial_omap_rx_timeout(unsigned long uart_no)
+static void serial_omap_rxdma_poll(unsigned long uart_no)
 {
 	struct uart_omap_port *up = ui[uart_no];
 	unsigned int curr_dma_pos, curr_transmitted_size;
@@ -1089,9 +1193,9 @@ static void serial_omap_rx_timeout(unsigned long uart_no)
 	if ((curr_dma_pos == up->uart_dma.prev_rx_dma_pos) ||
 			     (curr_dma_pos == 0)) {
 		if (jiffies_to_msecs(jiffies - up->port_activity) <
-							RX_TIMEOUT) {
+						up->uart_dma.rx_timeout) {
 			mod_timer(&up->uart_dma.rx_timer, jiffies +
-				usecs_to_jiffies(up->uart_dma.rx_timeout));
+				usecs_to_jiffies(up->uart_dma.rx_poll_rate));
 		} else {
 			serial_omap_stop_rxdma(up);
 			up->ier |= (UART_IER_RDI | UART_IER_RLSI);
@@ -1120,7 +1224,7 @@ static void serial_omap_rx_timeout(unsigned long uart_no)
 		}
 	} else  {
 		mod_timer(&up->uart_dma.rx_timer, jiffies +
-			usecs_to_jiffies(up->uart_dma.rx_timeout));
+			usecs_to_jiffies(up->uart_dma.rx_poll_rate));
 	}
 	up->port_activity = jiffies;
 }
@@ -1135,6 +1239,7 @@ static int serial_omap_start_rxdma(struct uart_omap_port *up)
 	int ret = 0;
 
 	if (up->uart_dma.rx_dma_channel == -1) {
+		pm_runtime_get_sync(&up->pdev->dev);
 		ret = omap_request_dma(up->uart_dma.uart_dma_rx,
 				"UART Rx DMA",
 				(void *)uart_rx_dma_callback, up,
@@ -1158,7 +1263,7 @@ static int serial_omap_start_rxdma(struct uart_omap_port *up)
 	/* FIXME: Cache maintenance needed here? */
 	omap_start_dma(up->uart_dma.rx_dma_channel);
 	mod_timer(&up->uart_dma.rx_timer, jiffies +
-				usecs_to_jiffies(up->uart_dma.rx_timeout));
+				usecs_to_jiffies(up->uart_dma.rx_poll_rate));
 	up->uart_dma.rx_dma_used = true;
 	return ret;
 }
@@ -1221,6 +1326,19 @@ static void uart_tx_dma_callback(int lch, u16 ch_status, void *data)
 	return;
 }
 
+static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
+{
+	struct omap_uart_port_info *omap_up_info;
+
+	omap_up_info = devm_kzalloc(dev, sizeof(*omap_up_info), GFP_KERNEL);
+	if (!omap_up_info)
+		return NULL; /* out of memory */
+
+	of_property_read_u32(dev->of_node, "clock-frequency",
+					 &omap_up_info->uartclk);
+	return omap_up_info;
+}
+
 static int serial_omap_probe(struct platform_device *pdev)
 {
 	struct uart_omap_port	*up;
@@ -1228,6 +1346,9 @@ static int serial_omap_probe(struct platform_device *pdev)
 	struct omap_uart_port_info *omap_up_info = pdev->dev.platform_data;
 	int ret = -ENOSPC;
 
+	if (pdev->dev.of_node)
+		omap_up_info = of_get_uart_port_info(&pdev->dev);
+
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!mem) {
 		dev_err(&pdev->dev, "no mem resource?\n");
@@ -1263,7 +1384,6 @@ static int serial_omap_probe(struct platform_device *pdev)
 		ret = -ENOMEM;
 		goto do_release_region;
 	}
-	sprintf(up->name, "OMAP UART%d", pdev->id);
 	up->pdev = pdev;
 	up->port.dev = &pdev->dev;
 	up->port.type = PORT_OMAP;
@@ -1273,34 +1393,74 @@ static int serial_omap_probe(struct platform_device *pdev)
 	up->port.regshift = 2;
 	up->port.fifosize = 64;
 	up->port.ops = &serial_omap_pops;
-	up->port.line = pdev->id;
 
-	up->port.membase = omap_up_info->membase;
-	up->port.mapbase = omap_up_info->mapbase;
+	if (pdev->dev.of_node)
+		up->port.line = of_alias_get_id(pdev->dev.of_node, "serial");
+	else
+		up->port.line = pdev->id;
+
+	if (up->port.line < 0) {
+		dev_err(&pdev->dev, "failed to get alias/pdev id, errno %d\n",
+								up->port.line);
+		ret = -ENODEV;
+		goto err;
+	}
+
+	sprintf(up->name, "OMAP UART%d", up->port.line);
+	up->port.mapbase = mem->start;
+	up->port.membase = ioremap(mem->start, resource_size(mem));
+	if (!up->port.membase) {
+		dev_err(&pdev->dev, "can't ioremap UART\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+
 	up->port.flags = omap_up_info->flags;
-	up->port.irqflags = omap_up_info->irqflags;
 	up->port.uartclk = omap_up_info->uartclk;
+	if (!up->port.uartclk) {
+		up->port.uartclk = DEFAULT_CLK_SPEED;
+		dev_warn(&pdev->dev, "No clock speed specified: using default:"
+						"%d\n", DEFAULT_CLK_SPEED);
+	}
 	up->uart_dma.uart_base = mem->start;
+	up->errata = omap_up_info->errata;
 
 	if (omap_up_info->dma_enabled) {
 		up->uart_dma.uart_dma_tx = dma_tx->start;
 		up->uart_dma.uart_dma_rx = dma_rx->start;
 		up->use_dma = 1;
-		up->uart_dma.rx_buf_size = 4096;
-		up->uart_dma.rx_timeout = 2;
+		up->uart_dma.rx_buf_size = omap_up_info->dma_rx_buf_size;
+		up->uart_dma.rx_timeout = omap_up_info->dma_rx_timeout;
+		up->uart_dma.rx_poll_rate = omap_up_info->dma_rx_poll_rate;
 		spin_lock_init(&(up->uart_dma.tx_lock));
 		spin_lock_init(&(up->uart_dma.rx_lock));
 		up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
 		up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
 	}
 
-	ui[pdev->id] = up;
+	up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+	up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+	pm_qos_add_request(&up->pm_qos_request,
+		PM_QOS_CPU_DMA_LATENCY, up->latency);
+	serial_omap_uart_wq = create_singlethread_workqueue(up->name);
+	INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
+
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev,
+			omap_up_info->autosuspend_timeout);
+
+	pm_runtime_irq_safe(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
+	ui[up->port.line] = up;
 	serial_omap_add_console_port(up);
 
 	ret = uart_add_one_port(&serial_omap_reg, &up->port);
 	if (ret != 0)
 		goto do_release_region;
 
+	pm_runtime_put(&pdev->dev);
 	platform_set_drvdata(pdev, up);
 	return 0;
 err:
@@ -1315,22 +1475,168 @@ static int serial_omap_remove(struct platform_device *dev)
 {
 	struct uart_omap_port *up = platform_get_drvdata(dev);
 
-	platform_set_drvdata(dev, NULL);
 	if (up) {
+		pm_runtime_disable(&up->pdev->dev);
 		uart_remove_one_port(&serial_omap_reg, &up->port);
+		pm_qos_remove_request(&up->pm_qos_request);
+
 		kfree(up);
 	}
+
+	platform_set_drvdata(dev, NULL);
 	return 0;
 }
 
+/*
+ * Work Around for Errata i202 (2430, 3430, 3630, 4430 and 4460)
+ * The access to uart register after MDR1 Access
+ * causes UART to corrupt data.
+ *
+ * Need a delay =
+ * 5 L4 clock cycles + 5 UART functional clock cycle (@48MHz = ~0.2uS)
+ * give 10 times as much
+ */
+static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1)
+{
+	u8 timeout = 255;
+
+	serial_out(up, UART_OMAP_MDR1, mdr1);
+	udelay(2);
+	serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT |
+			UART_FCR_CLEAR_RCVR);
+	/*
+	 * Wait for FIFO to empty: when empty, RX_FIFO_E bit is 0 and
+	 * TX_FIFO_E bit is 1.
+	 */
+	while (UART_LSR_THRE != (serial_in(up, UART_LSR) &
+				(UART_LSR_THRE | UART_LSR_DR))) {
+		timeout--;
+		if (!timeout) {
+			/* Should *never* happen. we warn and carry on */
+			dev_crit(&up->pdev->dev, "Errata i202: timedout %x\n",
+						serial_in(up, UART_LSR));
+			break;
+		}
+		udelay(1);
+	}
+}
+
+#ifdef CONFIG_PM_RUNTIME
+static void serial_omap_restore_context(struct uart_omap_port *up)
+{
+	if (up->errata & UART_ERRATA_i202_MDR1_ACCESS)
+		serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE);
+	else
+		serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
+
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */
+	serial_out(up, UART_EFR, UART_EFR_ECB);
+	serial_out(up, UART_LCR, 0x0); /* Operational mode */
+	serial_out(up, UART_IER, 0x0);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */
+	serial_out(up, UART_DLL, up->dll);
+	serial_out(up, UART_DLM, up->dlh);
+	serial_out(up, UART_LCR, 0x0); /* Operational mode */
+	serial_out(up, UART_IER, up->ier);
+	serial_out(up, UART_FCR, up->fcr);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
+	serial_out(up, UART_MCR, up->mcr);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */
+	serial_out(up, UART_OMAP_SCR, up->scr);
+	serial_out(up, UART_EFR, up->efr);
+	serial_out(up, UART_LCR, up->lcr);
+	if (up->errata & UART_ERRATA_i202_MDR1_ACCESS)
+		serial_omap_mdr1_errataset(up, up->mdr1);
+	else
+		serial_out(up, UART_OMAP_MDR1, up->mdr1);
+}
+
+static int serial_omap_runtime_suspend(struct device *dev)
+{
+	struct uart_omap_port *up = dev_get_drvdata(dev);
+	struct omap_uart_port_info *pdata = dev->platform_data;
+
+	if (!up)
+		return -EINVAL;
+
+	if (!pdata || !pdata->enable_wakeup)
+		return 0;
+
+	if (pdata->get_context_loss_count)
+		up->context_loss_cnt = pdata->get_context_loss_count(dev);
+
+	if (device_may_wakeup(dev)) {
+		if (!up->wakeups_enabled) {
+			pdata->enable_wakeup(up->pdev, true);
+			up->wakeups_enabled = true;
+		}
+	} else {
+		if (up->wakeups_enabled) {
+			pdata->enable_wakeup(up->pdev, false);
+			up->wakeups_enabled = false;
+		}
+	}
+
+	/* Errata i291 */
+	if (up->use_dma && pdata->set_forceidle &&
+			(up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
+		pdata->set_forceidle(up->pdev);
+
+	up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+	schedule_work(&up->qos_work);
+
+	return 0;
+}
+
+static int serial_omap_runtime_resume(struct device *dev)
+{
+	struct uart_omap_port *up = dev_get_drvdata(dev);
+	struct omap_uart_port_info *pdata = dev->platform_data;
+
+	if (up) {
+		if (pdata->get_context_loss_count) {
+			u32 loss_cnt = pdata->get_context_loss_count(dev);
+
+			if (up->context_loss_cnt != loss_cnt)
+				serial_omap_restore_context(up);
+		}
+
+		/* Errata i291 */
+		if (up->use_dma && pdata->set_noidle &&
+				(up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
+			pdata->set_noidle(up->pdev);
+
+		up->latency = up->calc_latency;
+		schedule_work(&up->qos_work);
+	}
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops serial_omap_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(serial_omap_suspend, serial_omap_resume)
+	SET_RUNTIME_PM_OPS(serial_omap_runtime_suspend,
+				serial_omap_runtime_resume, NULL)
+};
+
+#if defined(CONFIG_OF)
+static const struct of_device_id omap_serial_of_match[] = {
+	{ .compatible = "ti,omap2-uart" },
+	{ .compatible = "ti,omap3-uart" },
+	{ .compatible = "ti,omap4-uart" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, omap_serial_of_match);
+#endif
+
 static struct platform_driver serial_omap_driver = {
 	.probe          = serial_omap_probe,
 	.remove         = serial_omap_remove,
-
-	.suspend	= serial_omap_suspend,
-	.resume		= serial_omap_resume,
 	.driver		= {
 		.name	= DRIVER_NAME,
+		.pm	= &serial_omap_dev_pm_ops,
+		.of_match_table = of_match_ptr(omap_serial_of_match),
 	},
 };
 
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index d6aba8c087e4..17ae65762d1a 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -25,6 +25,9 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/dmi.h>
+#include <linux/console.h>
+#include <linux/nmi.h>
+#include <linux/delay.h>
 
 #include <linux/dmaengine.h>
 #include <linux/pch_dma.h>
@@ -198,6 +201,10 @@ enum {
 
 #define PCI_VENDOR_ID_ROHM		0x10DB
 
+#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
+
+#define DEFAULT_BAUD_RATE 1843200 /* 1.8432MHz */
+
 struct pch_uart_buffer {
 	unsigned char *buf;
 	int size;
@@ -276,6 +283,9 @@ static struct pch_uart_driver_data drv_dat[] = {
 	[pch_ml7831_uart1] = {PCH_UART_2LINE, 1},
 };
 
+#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
+static struct eg20t_port *pch_uart_ports[PCH_UART_NR];
+#endif
 static unsigned int default_baud = 9600;
 static const int trigger_level_256[4] = { 1, 64, 128, 224 };
 static const int trigger_level_64[4] = { 1, 16, 32, 56 };
@@ -754,7 +764,7 @@ static int dma_handle_rx(struct eg20t_port *priv)
 	sg_dma_address(sg) = priv->rx_buf_dma;
 
 	desc = priv->chan_rx->device->device_prep_slave_sg(priv->chan_rx,
-			sg, 1, DMA_FROM_DEVICE,
+			sg, 1, DMA_DEV_TO_MEM,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
 	if (!desc)
@@ -913,7 +923,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
 	}
 
 	desc = priv->chan_tx->device->device_prep_slave_sg(priv->chan_tx,
-					priv->sg_tx_p, nent, DMA_TO_DEVICE,
+					priv->sg_tx_p, nent, DMA_MEM_TO_DEV,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dev_err(priv->port.dev, "%s:device_prep_slave_sg Failed\n",
@@ -1385,6 +1395,143 @@ static struct uart_ops pch_uart_ops = {
 	.verify_port = pch_uart_verify_port
 };
 
+#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
+
+/*
+ *	Wait for transmitter & holding register to empty
+ */
+static void wait_for_xmitr(struct eg20t_port *up, int bits)
+{
+	unsigned int status, tmout = 10000;
+
+	/* Wait up to 10ms for the character(s) to be sent. */
+	for (;;) {
+		status = ioread8(up->membase + UART_LSR);
+
+		if ((status & bits) == bits)
+			break;
+		if (--tmout == 0)
+			break;
+		udelay(1);
+	}
+
+	/* Wait up to 1s for flow control if necessary */
+	if (up->port.flags & UPF_CONS_FLOW) {
+		unsigned int tmout;
+		for (tmout = 1000000; tmout; tmout--) {
+			unsigned int msr = ioread8(up->membase + UART_MSR);
+			if (msr & UART_MSR_CTS)
+				break;
+			udelay(1);
+			touch_nmi_watchdog();
+		}
+	}
+}
+
+static void pch_console_putchar(struct uart_port *port, int ch)
+{
+	struct eg20t_port *priv =
+		container_of(port, struct eg20t_port, port);
+
+	wait_for_xmitr(priv, UART_LSR_THRE);
+	iowrite8(ch, priv->membase + PCH_UART_THR);
+}
+
+/*
+ *	Print a string to the serial port trying not to disturb
+ *	any possible real use of the port...
+ *
+ *	The console_lock must be held when we get here.
+ */
+static void
+pch_console_write(struct console *co, const char *s, unsigned int count)
+{
+	struct eg20t_port *priv;
+
+	unsigned long flags;
+	u8 ier;
+	int locked = 1;
+
+	priv = pch_uart_ports[co->index];
+
+	touch_nmi_watchdog();
+
+	local_irq_save(flags);
+	if (priv->port.sysrq) {
+		/* serial8250_handle_port() already took the lock */
+		locked = 0;
+	} else if (oops_in_progress) {
+		locked = spin_trylock(&priv->port.lock);
+	} else
+		spin_lock(&priv->port.lock);
+
+	/*
+	 *	First save the IER then disable the interrupts
+	 */
+	ier = ioread8(priv->membase + UART_IER);
+
+	pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_ALL_INT);
+
+	uart_console_write(&priv->port, s, count, pch_console_putchar);
+
+	/*
+	 *	Finally, wait for transmitter to become empty
+	 *	and restore the IER
+	 */
+	wait_for_xmitr(priv, BOTH_EMPTY);
+	iowrite8(ier, priv->membase + UART_IER);
+
+	if (locked)
+		spin_unlock(&priv->port.lock);
+	local_irq_restore(flags);
+}
+
+static int __init pch_console_setup(struct console *co, char *options)
+{
+	struct uart_port *port;
+	int baud = 9600;
+	int bits = 8;
+	int parity = 'n';
+	int flow = 'n';
+
+	/*
+	 * Check whether an invalid uart number has been specified, and
+	 * if so, search for the first available port that does have
+	 * console support.
+	 */
+	if (co->index >= PCH_UART_NR)
+		co->index = 0;
+	port = &pch_uart_ports[co->index]->port;
+
+	if (!port || (!port->iobase && !port->membase))
+		return -ENODEV;
+
+	/* setup uartclock */
+	port->uartclk = DEFAULT_BAUD_RATE;
+
+	if (options)
+		uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+	return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct uart_driver pch_uart_driver;
+
+static struct console pch_console = {
+	.name		= PCH_UART_DRIVER_DEVICE,
+	.write		= pch_console_write,
+	.device		= uart_console_device,
+	.setup		= pch_console_setup,
+	.flags		= CON_PRINTBUFFER | CON_ANYTIME,
+	.index		= -1,
+	.data		= &pch_uart_driver,
+};
+
+#define PCH_CONSOLE	(&pch_console)
+#else
+#define PCH_CONSOLE	NULL
+#endif
+
 static struct uart_driver pch_uart_driver = {
 	.owner = THIS_MODULE,
 	.driver_name = KBUILD_MODNAME,
@@ -1392,6 +1539,7 @@ static struct uart_driver pch_uart_driver = {
 	.major = 0,
 	.minor = 0,
 	.nr = PCH_UART_NR,
+	.cons = PCH_CONSOLE,
 };
 
 static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
@@ -1418,7 +1566,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
 	if (!rxbuf)
 		goto init_port_free_txbuf;
 
-	base_baud = 1843200; /* 1.8432MHz */
+	base_baud = DEFAULT_BAUD_RATE;
 
 	/* quirk for CM-iTC board */
 	board_name = dmi_get_system_info(DMI_BOARD_NAME);
@@ -1468,6 +1616,9 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
 	pci_set_drvdata(pdev, priv);
 	pch_uart_hal_request(pdev, fifosize, base_baud);
 
+#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
+	pch_uart_ports[board->line_no] = priv;
+#endif
 	ret = uart_add_one_port(&pch_uart_driver, &priv->port);
 	if (ret < 0)
 		goto init_port_hal_free;
@@ -1475,6 +1626,9 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
 	return priv;
 
 init_port_hal_free:
+#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
+	pch_uart_ports[board->line_no] = NULL;
+#endif
 	free_page((unsigned long)rxbuf);
 init_port_free_txbuf:
 	kfree(priv);
@@ -1497,6 +1651,10 @@ static void pch_uart_pci_remove(struct pci_dev *pdev)
 	priv = (struct eg20t_port *)pci_get_drvdata(pdev);
 
 	pci_disable_msi(pdev);
+
+#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
+	pch_uart_ports[priv->port.line] = NULL;
+#endif
 	pch_uart_exit_port(priv);
 	pci_disable_device(pdev);
 	kfree(priv);
diff --git a/drivers/tty/serial/s3c2410.c b/drivers/tty/serial/s3c2410.c
deleted file mode 100644
index b1d7e7c1849d..000000000000
--- a/drivers/tty/serial/s3c2410.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Driver for Samsung S3C2410 SoC onboard UARTs.
- *
- * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *
- * 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/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
-
-#include "samsung.h"
-
-static int s3c2410_serial_setsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	if (strcmp(clk->name, "uclk") == 0)
-		ucon |= S3C2410_UCON_UCLK;
-	else
-		ucon &= ~S3C2410_UCON_UCLK;
-
-	wr_regl(port, S3C2410_UCON, ucon);
-	return 0;
-}
-
-static int s3c2410_serial_getsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	clk->divisor = 1;
-	clk->name = (ucon & S3C2410_UCON_UCLK) ? "uclk" : "pclk";
-
-	return 0;
-}
-
-static int s3c2410_serial_resetport(struct uart_port *port,
-				    struct s3c2410_uartcfg *cfg)
-{
-	dbg("s3c2410_serial_resetport: port=%p (%08lx), cfg=%p\n",
-	    port, port->mapbase, cfg);
-
-	wr_regl(port, S3C2410_UCON,  cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	return 0;
-}
-
-static struct s3c24xx_uart_info s3c2410_uart_inf = {
-	.name		= "Samsung S3C2410 UART",
-	.type		= PORT_S3C2410,
-	.fifosize	= 16,
-	.rx_fifomask	= S3C2410_UFSTAT_RXMASK,
-	.rx_fifoshift	= S3C2410_UFSTAT_RXSHIFT,
-	.rx_fifofull	= S3C2410_UFSTAT_RXFULL,
-	.tx_fifofull	= S3C2410_UFSTAT_TXFULL,
-	.tx_fifomask	= S3C2410_UFSTAT_TXMASK,
-	.tx_fifoshift	= S3C2410_UFSTAT_TXSHIFT,
-	.get_clksrc	= s3c2410_serial_getsource,
-	.set_clksrc	= s3c2410_serial_setsource,
-	.reset_port	= s3c2410_serial_resetport,
-};
-
-static int s3c2410_serial_probe(struct platform_device *dev)
-{
-	return s3c24xx_serial_probe(dev, &s3c2410_uart_inf);
-}
-
-static struct platform_driver s3c2410_serial_driver = {
-	.probe		= s3c2410_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s3c2410-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init s3c2410_serial_init(void)
-{
-	return s3c24xx_serial_init(&s3c2410_serial_driver, &s3c2410_uart_inf);
-}
-
-static void __exit s3c2410_serial_exit(void)
-{
-	platform_driver_unregister(&s3c2410_serial_driver);
-}
-
-module_init(s3c2410_serial_init);
-module_exit(s3c2410_serial_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_DESCRIPTION("Samsung S3C2410 SoC Serial port driver");
-MODULE_ALIAS("platform:s3c2410-uart");
diff --git a/drivers/tty/serial/s3c2412.c b/drivers/tty/serial/s3c2412.c
deleted file mode 100644
index 2234bf9ced45..000000000000
--- a/drivers/tty/serial/s3c2412.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Driver for Samsung S3C2412 and S3C2413 SoC onboard UARTs.
- *
- * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *
- * 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/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
-
-#include "samsung.h"
-
-static int s3c2412_serial_setsource(struct uart_port *port,
-				     struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	ucon &= ~S3C2412_UCON_CLKMASK;
-
-	if (strcmp(clk->name, "uclk") == 0)
-		ucon |= S3C2440_UCON_UCLK;
-	else if (strcmp(clk->name, "pclk") == 0)
-		ucon |= S3C2440_UCON_PCLK;
-	else if (strcmp(clk->name, "usysclk") == 0)
-		ucon |= S3C2412_UCON_USYSCLK;
-	else {
-		printk(KERN_ERR "unknown clock source %s\n", clk->name);
-		return -EINVAL;
-	}
-
-	wr_regl(port, S3C2410_UCON, ucon);
-	return 0;
-}
-
-
-static int s3c2412_serial_getsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	switch (ucon & S3C2412_UCON_CLKMASK) {
-	case S3C2412_UCON_UCLK:
-		clk->divisor = 1;
-		clk->name = "uclk";
-		break;
-
-	case S3C2412_UCON_PCLK:
-	case S3C2412_UCON_PCLK2:
-		clk->divisor = 1;
-		clk->name = "pclk";
-		break;
-
-	case S3C2412_UCON_USYSCLK:
-		clk->divisor = 1;
-		clk->name = "usysclk";
-		break;
-	}
-
-	return 0;
-}
-
-static int s3c2412_serial_resetport(struct uart_port *port,
-				    struct s3c2410_uartcfg *cfg)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	dbg("%s: port=%p (%08lx), cfg=%p\n",
-	    __func__, port, port->mapbase, cfg);
-
-	/* ensure we don't change the clock settings... */
-
-	ucon &= S3C2412_UCON_CLKMASK;
-
-	wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	return 0;
-}
-
-static struct s3c24xx_uart_info s3c2412_uart_inf = {
-	.name		= "Samsung S3C2412 UART",
-	.type		= PORT_S3C2412,
-	.fifosize	= 64,
-	.has_divslot	= 1,
-	.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
-	.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
-	.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
-	.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
-	.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
-	.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
-	.get_clksrc	= s3c2412_serial_getsource,
-	.set_clksrc	= s3c2412_serial_setsource,
-	.reset_port	= s3c2412_serial_resetport,
-};
-
-/* device management */
-
-static int s3c2412_serial_probe(struct platform_device *dev)
-{
-	dbg("s3c2440_serial_probe: dev=%p\n", dev);
-	return s3c24xx_serial_probe(dev, &s3c2412_uart_inf);
-}
-
-static struct platform_driver s3c2412_serial_driver = {
-	.probe		= s3c2412_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s3c2412-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static inline int s3c2412_serial_init(void)
-{
-	return s3c24xx_serial_init(&s3c2412_serial_driver, &s3c2412_uart_inf);
-}
-
-static inline void s3c2412_serial_exit(void)
-{
-	platform_driver_unregister(&s3c2412_serial_driver);
-}
-
-module_init(s3c2412_serial_init);
-module_exit(s3c2412_serial_exit);
-
-MODULE_DESCRIPTION("Samsung S3C2412,S3C2413 SoC Serial port driver");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:s3c2412-uart");
diff --git a/drivers/tty/serial/s3c2440.c b/drivers/tty/serial/s3c2440.c
deleted file mode 100644
index 1d0c324b813f..000000000000
--- a/drivers/tty/serial/s3c2440.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Driver for Samsung S3C2440 and S3C2442 SoC onboard UARTs.
- *
- * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *
- * 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/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-gpio.h>
-
-#include "samsung.h"
-
-
-static int s3c2440_serial_setsource(struct uart_port *port,
-				     struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	/* todo - proper fclk<>nonfclk switch. */
-
-	ucon &= ~S3C2440_UCON_CLKMASK;
-
-	if (strcmp(clk->name, "uclk") == 0)
-		ucon |= S3C2440_UCON_UCLK;
-	else if (strcmp(clk->name, "pclk") == 0)
-		ucon |= S3C2440_UCON_PCLK;
-	else if (strcmp(clk->name, "fclk") == 0)
-		ucon |= S3C2440_UCON_FCLK;
-	else {
-		printk(KERN_ERR "unknown clock source %s\n", clk->name);
-		return -EINVAL;
-	}
-
-	wr_regl(port, S3C2410_UCON, ucon);
-	return 0;
-}
-
-
-static int s3c2440_serial_getsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-	unsigned long ucon0, ucon1, ucon2;
-
-	switch (ucon & S3C2440_UCON_CLKMASK) {
-	case S3C2440_UCON_UCLK:
-		clk->divisor = 1;
-		clk->name = "uclk";
-		break;
-
-	case S3C2440_UCON_PCLK:
-	case S3C2440_UCON_PCLK2:
-		clk->divisor = 1;
-		clk->name = "pclk";
-		break;
-
-	case S3C2440_UCON_FCLK:
-		/* the fun of calculating the uart divisors on
-		 * the s3c2440 */
-
-		ucon0 = __raw_readl(S3C24XX_VA_UART0 + S3C2410_UCON);
-		ucon1 = __raw_readl(S3C24XX_VA_UART1 + S3C2410_UCON);
-		ucon2 = __raw_readl(S3C24XX_VA_UART2 + S3C2410_UCON);
-
-		printk("ucons: %08lx, %08lx, %08lx\n", ucon0, ucon1, ucon2);
-
-		ucon0 &= S3C2440_UCON0_DIVMASK;
-		ucon1 &= S3C2440_UCON1_DIVMASK;
-		ucon2 &= S3C2440_UCON2_DIVMASK;
-
-		if (ucon0 != 0) {
-			clk->divisor = ucon0 >> S3C2440_UCON_DIVSHIFT;
-			clk->divisor += 6;
-		} else if (ucon1 != 0) {
-			clk->divisor = ucon1 >> S3C2440_UCON_DIVSHIFT;
-			clk->divisor += 21;
-		} else if (ucon2 != 0) {
-			clk->divisor = ucon2 >> S3C2440_UCON_DIVSHIFT;
-			clk->divisor += 36;
-		} else {
-			/* manual calims 44, seems to be 9 */
-			clk->divisor = 9;
-		}
-
-		clk->name = "fclk";
-		break;
-	}
-
-	return 0;
-}
-
-static int s3c2440_serial_resetport(struct uart_port *port,
-				    struct s3c2410_uartcfg *cfg)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	dbg("s3c2440_serial_resetport: port=%p (%08lx), cfg=%p\n",
-	    port, port->mapbase, cfg);
-
-	/* ensure we don't change the clock settings... */
-
-	ucon &= (S3C2440_UCON0_DIVMASK | (3<<10));
-
-	wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	return 0;
-}
-
-static struct s3c24xx_uart_info s3c2440_uart_inf = {
-	.name		= "Samsung S3C2440 UART",
-	.type		= PORT_S3C2440,
-	.fifosize	= 64,
-	.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
-	.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
-	.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
-	.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
-	.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
-	.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
-	.get_clksrc	= s3c2440_serial_getsource,
-	.set_clksrc	= s3c2440_serial_setsource,
-	.reset_port	= s3c2440_serial_resetport,
-};
-
-/* device management */
-
-static int s3c2440_serial_probe(struct platform_device *dev)
-{
-	dbg("s3c2440_serial_probe: dev=%p\n", dev);
-	return s3c24xx_serial_probe(dev, &s3c2440_uart_inf);
-}
-
-static struct platform_driver s3c2440_serial_driver = {
-	.probe		= s3c2440_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s3c2440-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init s3c2440_serial_init(void)
-{
-	return s3c24xx_serial_init(&s3c2440_serial_driver, &s3c2440_uart_inf);
-}
-
-static void __exit s3c2440_serial_exit(void)
-{
-	platform_driver_unregister(&s3c2440_serial_driver);
-}
-
-module_init(s3c2440_serial_init);
-module_exit(s3c2440_serial_exit);
-
-MODULE_DESCRIPTION("Samsung S3C2440,S3C2442 SoC Serial port driver");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:s3c2440-uart");
diff --git a/drivers/tty/serial/s3c6400.c b/drivers/tty/serial/s3c6400.c
deleted file mode 100644
index e2f6913d84d5..000000000000
--- a/drivers/tty/serial/s3c6400.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Driver for Samsung S3C6400 and S3C6410 SoC onboard UARTs.
- *
- * Copyright 2008 Openmoko,  Inc.
- * Copyright 2008 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * 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/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-
-#include "samsung.h"
-
-static int s3c6400_serial_setsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	if (strcmp(clk->name, "uclk0") == 0) {
-		ucon &= ~S3C6400_UCON_CLKMASK;
-		ucon |= S3C6400_UCON_UCLK0;
-	} else if (strcmp(clk->name, "uclk1") == 0)
-		ucon |= S3C6400_UCON_UCLK1;
-	else if (strcmp(clk->name, "pclk") == 0) {
-		/* See notes about transitioning from UCLK to PCLK */
-		ucon &= ~S3C6400_UCON_UCLK0;
-	} else {
-		printk(KERN_ERR "unknown clock source %s\n", clk->name);
-		return -EINVAL;
-	}
-
-	wr_regl(port, S3C2410_UCON, ucon);
-	return 0;
-}
-
-
-static int s3c6400_serial_getsource(struct uart_port *port,
-				    struct s3c24xx_uart_clksrc *clk)
-{
-	u32 ucon = rd_regl(port, S3C2410_UCON);
-
-	clk->divisor = 1;
-
-	switch (ucon & S3C6400_UCON_CLKMASK) {
-	case S3C6400_UCON_UCLK0:
-		clk->name = "uclk0";
-		break;
-
-	case S3C6400_UCON_UCLK1:
-		clk->name = "uclk1";
-		break;
-
-	case S3C6400_UCON_PCLK:
-	case S3C6400_UCON_PCLK2:
-		clk->name = "pclk";
-		break;
-	}
-
-	return 0;
-}
-
-static int s3c6400_serial_resetport(struct uart_port *port,
-				    struct s3c2410_uartcfg *cfg)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	dbg("s3c6400_serial_resetport: port=%p (%08lx), cfg=%p\n",
-	    port, port->mapbase, cfg);
-
-	/* ensure we don't change the clock settings... */
-
-	ucon &= S3C6400_UCON_CLKMASK;
-
-	wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	return 0;
-}
-
-static struct s3c24xx_uart_info s3c6400_uart_inf = {
-	.name		= "Samsung S3C6400 UART",
-	.type		= PORT_S3C6400,
-	.fifosize	= 64,
-	.has_divslot	= 1,
-	.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
-	.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
-	.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
-	.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
-	.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
-	.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
-	.get_clksrc	= s3c6400_serial_getsource,
-	.set_clksrc	= s3c6400_serial_setsource,
-	.reset_port	= s3c6400_serial_resetport,
-};
-
-/* device management */
-
-static int s3c6400_serial_probe(struct platform_device *dev)
-{
-	dbg("s3c6400_serial_probe: dev=%p\n", dev);
-	return s3c24xx_serial_probe(dev, &s3c6400_uart_inf);
-}
-
-static struct platform_driver s3c6400_serial_driver = {
-	.probe		= s3c6400_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s3c6400-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init s3c6400_serial_init(void)
-{
-	return s3c24xx_serial_init(&s3c6400_serial_driver, &s3c6400_uart_inf);
-}
-
-static void __exit s3c6400_serial_exit(void)
-{
-	platform_driver_unregister(&s3c6400_serial_driver);
-}
-
-module_init(s3c6400_serial_init);
-module_exit(s3c6400_serial_exit);
-
-MODULE_DESCRIPTION("Samsung S3C6400,S3C6410 SoC Serial port driver");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:s3c6400-uart");
diff --git a/drivers/tty/serial/s5pv210.c b/drivers/tty/serial/s5pv210.c
deleted file mode 100644
index 8b0b888a1b76..000000000000
--- a/drivers/tty/serial/s5pv210.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com/
- *
- * Based on drivers/serial/s3c6400.c
- *
- * Driver for Samsung S5PV210 SoC UARTs.
- *
- * 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/ioport.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/delay.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-#include <plat/regs-serial.h>
-#include "samsung.h"
-
-static int s5pv210_serial_setsource(struct uart_port *port,
-					struct s3c24xx_uart_clksrc *clk)
-{
-	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	if (cfg->flags & NO_NEED_CHECK_CLKSRC)
-		return 0;
-
-	if (strcmp(clk->name, "pclk") == 0)
-		ucon &= ~S5PV210_UCON_CLKMASK;
-	else if (strcmp(clk->name, "uclk1") == 0)
-		ucon |= S5PV210_UCON_CLKMASK;
-	else {
-		printk(KERN_ERR "unknown clock source %s\n", clk->name);
-		return -EINVAL;
-	}
-
-	wr_regl(port, S3C2410_UCON, ucon);
-	return 0;
-}
-
-
-static int s5pv210_serial_getsource(struct uart_port *port,
-					struct s3c24xx_uart_clksrc *clk)
-{
-	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
-	u32 ucon = rd_regl(port, S3C2410_UCON);
-
-	clk->divisor = 1;
-
-	if (cfg->flags & NO_NEED_CHECK_CLKSRC)
-		return 0;
-
-	switch (ucon & S5PV210_UCON_CLKMASK) {
-	case S5PV210_UCON_PCLK:
-		clk->name = "pclk";
-		break;
-	case S5PV210_UCON_UCLK:
-		clk->name = "uclk1";
-		break;
-	}
-
-	return 0;
-}
-
-static int s5pv210_serial_resetport(struct uart_port *port,
-					struct s3c2410_uartcfg *cfg)
-{
-	unsigned long ucon = rd_regl(port, S3C2410_UCON);
-
-	ucon &= S5PV210_UCON_CLKMASK;
-	wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
-	wr_regl(port, S3C2410_ULCON, cfg->ulcon);
-
-	/* reset both fifos */
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
-	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
-
-	/* It is need to delay When reset FIFO register */
-	udelay(1);
-
-	return 0;
-}
-
-#define S5PV210_UART_DEFAULT_INFO(fifo_size)			\
-		.name		= "Samsung S5PV210 UART0",	\
-		.type		= PORT_S3C6400,			\
-		.fifosize	= fifo_size,			\
-		.has_divslot	= 1,				\
-		.rx_fifomask	= S5PV210_UFSTAT_RXMASK,	\
-		.rx_fifoshift	= S5PV210_UFSTAT_RXSHIFT,	\
-		.rx_fifofull	= S5PV210_UFSTAT_RXFULL,	\
-		.tx_fifofull	= S5PV210_UFSTAT_TXFULL,	\
-		.tx_fifomask	= S5PV210_UFSTAT_TXMASK,	\
-		.tx_fifoshift	= S5PV210_UFSTAT_TXSHIFT,	\
-		.get_clksrc	= s5pv210_serial_getsource,	\
-		.set_clksrc	= s5pv210_serial_setsource,	\
-		.reset_port	= s5pv210_serial_resetport
-
-static struct s3c24xx_uart_info s5p_port_fifo256 = {
-	S5PV210_UART_DEFAULT_INFO(256),
-};
-
-static struct s3c24xx_uart_info s5p_port_fifo64 = {
-	S5PV210_UART_DEFAULT_INFO(64),
-};
-
-static struct s3c24xx_uart_info s5p_port_fifo16 = {
-	S5PV210_UART_DEFAULT_INFO(16),
-};
-
-static struct s3c24xx_uart_info *s5p_uart_inf[] = {
-	[0] = &s5p_port_fifo256,
-	[1] = &s5p_port_fifo64,
-	[2] = &s5p_port_fifo16,
-	[3] = &s5p_port_fifo16,
-};
-
-/* device management */
-static int s5p_serial_probe(struct platform_device *pdev)
-{
-	return s3c24xx_serial_probe(pdev, s5p_uart_inf[pdev->id]);
-}
-
-static struct platform_driver s5p_serial_driver = {
-	.probe		= s5p_serial_probe,
-	.remove		= __devexit_p(s3c24xx_serial_remove),
-	.driver		= {
-		.name	= "s5pv210-uart",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init s5p_serial_init(void)
-{
-	return s3c24xx_serial_init(&s5p_serial_driver, *s5p_uart_inf);
-}
-
-static void __exit s5p_serial_exit(void)
-{
-	platform_driver_unregister(&s5p_serial_driver);
-}
-
-module_init(s5p_serial_init);
-module_exit(s5p_serial_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s5pv210-uart");
-MODULE_DESCRIPTION("Samsung S5PV210 UART Driver support");
-MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index b31f1c3a2c4c..f96f37b5fec6 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -42,6 +42,7 @@
 #include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/cpufreq.h>
+#include <linux/of.h>
 
 #include <asm/irq.h>
 
@@ -49,6 +50,7 @@
 #include <mach/map.h>
 
 #include <plat/regs-serial.h>
+#include <plat/clock.h>
 
 #include "samsung.h"
 
@@ -190,10 +192,13 @@ static inline struct s3c24xx_uart_info *s3c24xx_port_to_info(struct uart_port *p
 
 static inline struct s3c2410_uartcfg *s3c24xx_port_to_cfg(struct uart_port *port)
 {
+	struct s3c24xx_uart_port *ourport;
+
 	if (port->dev == NULL)
 		return NULL;
 
-	return (struct s3c2410_uartcfg *)port->dev->platform_data;
+	ourport = container_of(port, struct s3c24xx_uart_port, port);
+	return ourport->cfg;
 }
 
 static int s3c24xx_serial_rx_fifocnt(struct s3c24xx_uart_port *ourport,
@@ -202,7 +207,7 @@ static int s3c24xx_serial_rx_fifocnt(struct s3c24xx_uart_port *ourport,
 	struct s3c24xx_uart_info *info = ourport->info;
 
 	if (ufstat & info->rx_fifofull)
-		return info->fifosize;
+		return ourport->port.fifosize;
 
 	return (ufstat & info->rx_fifomask) >> info->rx_fifoshift;
 }
@@ -555,154 +560,98 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level,
  *
 */
 
+#define MAX_CLK_NAME_LENGTH 15
 
-#define MAX_CLKS (8)
-
-static struct s3c24xx_uart_clksrc tmp_clksrc = {
-	.name		= "pclk",
-	.min_baud	= 0,
-	.max_baud	= 0,
-	.divisor	= 1,
-};
-
-static inline int
-s3c24xx_serial_getsource(struct uart_port *port, struct s3c24xx_uart_clksrc *c)
+static inline int s3c24xx_serial_getsource(struct uart_port *port)
 {
 	struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
+	unsigned int ucon;
 
-	return (info->get_clksrc)(port, c);
-}
-
-static inline int
-s3c24xx_serial_setsource(struct uart_port *port, struct s3c24xx_uart_clksrc *c)
-{
-	struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
+	if (info->num_clks == 1)
+		return 0;
 
-	return (info->set_clksrc)(port, c);
+	ucon = rd_regl(port, S3C2410_UCON);
+	ucon &= info->clksel_mask;
+	return ucon >> info->clksel_shift;
 }
 
-struct baud_calc {
-	struct s3c24xx_uart_clksrc	*clksrc;
-	unsigned int			 calc;
-	unsigned int			 divslot;
-	unsigned int			 quot;
-	struct clk			*src;
-};
-
-static int s3c24xx_serial_calcbaud(struct baud_calc *calc,
-				   struct uart_port *port,
-				   struct s3c24xx_uart_clksrc *clksrc,
-				   unsigned int baud)
+static void s3c24xx_serial_setsource(struct uart_port *port,
+			unsigned int clk_sel)
 {
-	struct s3c24xx_uart_port *ourport = to_ourport(port);
-	unsigned long rate;
-
-	calc->src = clk_get(port->dev, clksrc->name);
-	if (calc->src == NULL || IS_ERR(calc->src))
-		return 0;
-
-	rate = clk_get_rate(calc->src);
-	rate /= clksrc->divisor;
+	struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
+	unsigned int ucon;
 
-	calc->clksrc = clksrc;
+	if (info->num_clks == 1)
+		return;
 
-	if (ourport->info->has_divslot) {
-		unsigned long div = rate / baud;
-
-		/* The UDIVSLOT register on the newer UARTs allows us to
-		 * get a divisor adjustment of 1/16th on the baud clock.
-		 *
-		 * We don't keep the UDIVSLOT value (the 16ths we calculated
-		 * by not multiplying the baud by 16) as it is easy enough
-		 * to recalculate.
-		 */
-
-		calc->quot = div / 16;
-		calc->calc = rate / div;
-	} else {
-		calc->quot = (rate + (8 * baud)) / (16 * baud);
-		calc->calc = (rate / (calc->quot * 16));
-	}
+	ucon = rd_regl(port, S3C2410_UCON);
+	if ((ucon & info->clksel_mask) >> info->clksel_shift == clk_sel)
+		return;
 
-	calc->quot--;
-	return 1;
+	ucon &= ~info->clksel_mask;
+	ucon |= clk_sel << info->clksel_shift;
+	wr_regl(port, S3C2410_UCON, ucon);
 }
 
-static unsigned int s3c24xx_serial_getclk(struct uart_port *port,
-					  struct s3c24xx_uart_clksrc **clksrc,
-					  struct clk **clk,
-					  unsigned int baud)
+static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
+			unsigned int req_baud, struct clk **best_clk,
+			unsigned int *clk_num)
 {
-	struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port);
-	struct s3c24xx_uart_clksrc *clkp;
-	struct baud_calc res[MAX_CLKS];
-	struct baud_calc *resptr, *best, *sptr;
-	int i;
-
-	clkp = cfg->clocks;
-	best = NULL;
-
-	if (cfg->clocks_size < 2) {
-		if (cfg->clocks_size == 0)
-			clkp = &tmp_clksrc;
-
-		/* check to see if we're sourcing fclk, and if so we're
-		 * going to have to update the clock source
-		 */
-
-		if (strcmp(clkp->name, "fclk") == 0) {
-			struct s3c24xx_uart_clksrc src;
-
-			s3c24xx_serial_getsource(port, &src);
-
-			/* check that the port already using fclk, and if
-			 * not, then re-select fclk
+	struct s3c24xx_uart_info *info = ourport->info;
+	struct clk *clk;
+	unsigned long rate;
+	unsigned int cnt, baud, quot, clk_sel, best_quot = 0;
+	char clkname[MAX_CLK_NAME_LENGTH];
+	int calc_deviation, deviation = (1 << 30) - 1;
+
+	*best_clk = NULL;
+	clk_sel = (ourport->cfg->clk_sel) ? ourport->cfg->clk_sel :
+			ourport->info->def_clk_sel;
+	for (cnt = 0; cnt < info->num_clks; cnt++) {
+		if (!(clk_sel & (1 << cnt)))
+			continue;
+
+		sprintf(clkname, "clk_uart_baud%d", cnt);
+		clk = clk_get(ourport->port.dev, clkname);
+		if (IS_ERR_OR_NULL(clk))
+			continue;
+
+		rate = clk_get_rate(clk);
+		if (!rate)
+			continue;
+
+		if (ourport->info->has_divslot) {
+			unsigned long div = rate / req_baud;
+
+			/* The UDIVSLOT register on the newer UARTs allows us to
+			 * get a divisor adjustment of 1/16th on the baud clock.
+			 *
+			 * We don't keep the UDIVSLOT value (the 16ths we
+			 * calculated by not multiplying the baud by 16) as it
+			 * is easy enough to recalculate.
 			 */
 
-			if (strcmp(src.name, clkp->name) == 0) {
-				s3c24xx_serial_setsource(port, clkp);
-				s3c24xx_serial_getsource(port, &src);
-			}
-
-			clkp->divisor = src.divisor;
-		}
-
-		s3c24xx_serial_calcbaud(res, port, clkp, baud);
-		best = res;
-		resptr = best + 1;
-	} else {
-		resptr = res;
-
-		for (i = 0; i < cfg->clocks_size; i++, clkp++) {
-			if (s3c24xx_serial_calcbaud(resptr, port, clkp, baud))
-				resptr++;
+			quot = div / 16;
+			baud = rate / div;
+		} else {
+			quot = (rate + (8 * req_baud)) / (16 * req_baud);
+			baud = rate / (quot * 16);
 		}
-	}
-
-	/* ok, we now need to select the best clock we found */
-
-	if (!best) {
-		unsigned int deviation = (1<<30)|((1<<30)-1);
-		int calc_deviation;
+		quot--;
 
-		for (sptr = res; sptr < resptr; sptr++) {
-			calc_deviation = baud - sptr->calc;
-			if (calc_deviation < 0)
-				calc_deviation = -calc_deviation;
+		calc_deviation = req_baud - baud;
+		if (calc_deviation < 0)
+			calc_deviation = -calc_deviation;
 
-			if (calc_deviation < deviation) {
-				best = sptr;
-				deviation = calc_deviation;
-			}
+		if (calc_deviation < deviation) {
+			*best_clk = clk;
+			best_quot = quot;
+			*clk_num = cnt;
+			deviation = calc_deviation;
 		}
 	}
 
-	/* store results to pass back */
-
-	*clksrc = best->clksrc;
-	*clk    = best->src;
-
-	return best->quot;
+	return best_quot;
 }
 
 /* udivslot_table[]
@@ -735,10 +684,9 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 {
 	struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port);
 	struct s3c24xx_uart_port *ourport = to_ourport(port);
-	struct s3c24xx_uart_clksrc *clksrc = NULL;
 	struct clk *clk = NULL;
 	unsigned long flags;
-	unsigned int baud, quot;
+	unsigned int baud, quot, clk_sel = 0;
 	unsigned int ulcon;
 	unsigned int umcon;
 	unsigned int udivslot = 0;
@@ -754,17 +702,16 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 	 */
 
 	baud = uart_get_baud_rate(port, termios, old, 0, 115200*8);
-
+	quot = s3c24xx_serial_getclk(ourport, baud, &clk, &clk_sel);
 	if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST)
 		quot = port->custom_divisor;
-	else
-		quot = s3c24xx_serial_getclk(port, &clksrc, &clk, baud);
+	if (!clk)
+		return;
 
 	/* check to see if we need  to change clock source */
 
-	if (ourport->clksrc != clksrc || ourport->baudclk != clk) {
-		dbg("selecting clock %p\n", clk);
-		s3c24xx_serial_setsource(port, clksrc);
+	if (ourport->baudclk != clk) {
+		s3c24xx_serial_setsource(port, clk_sel);
 
 		if (ourport->baudclk != NULL && !IS_ERR(ourport->baudclk)) {
 			clk_disable(ourport->baudclk);
@@ -773,7 +720,6 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 
 		clk_enable(clk);
 
-		ourport->clksrc = clksrc;
 		ourport->baudclk = clk;
 		ourport->baudclk_rate = clk ? clk_get_rate(clk) : 0;
 	}
@@ -1020,16 +966,29 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS
 
 /* s3c24xx_serial_resetport
  *
- * wrapper to call the specific reset for this port (reset the fifos
- * and the settings)
+ * reset the fifos and other the settings.
 */
 
-static inline int s3c24xx_serial_resetport(struct uart_port *port,
-					   struct s3c2410_uartcfg *cfg)
+static void s3c24xx_serial_resetport(struct uart_port *port,
+				   struct s3c2410_uartcfg *cfg)
 {
 	struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
+	unsigned long ucon = rd_regl(port, S3C2410_UCON);
+	unsigned int ucon_mask;
+
+	ucon_mask = info->clksel_mask;
+	if (info->type == PORT_S3C2440)
+		ucon_mask |= S3C2440_UCON0_DIVMASK;
 
-	return (info->reset_port)(port, cfg);
+	ucon &= ucon_mask;
+	wr_regl(port, S3C2410_UCON,  ucon | cfg->ucon);
+
+	/* reset both fifos */
+	wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
+	wr_regl(port, S3C2410_UFCON, cfg->ufcon);
+
+	/* some delay is required after fifo reset */
+	udelay(1);
 }
 
 
@@ -1121,11 +1080,10 @@ static inline void s3c24xx_serial_cpufreq_deregister(struct s3c24xx_uart_port *p
  */
 
 static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
-				    struct s3c24xx_uart_info *info,
 				    struct platform_device *platdev)
 {
 	struct uart_port *port = &ourport->port;
-	struct s3c2410_uartcfg *cfg;
+	struct s3c2410_uartcfg *cfg = ourport->cfg;
 	struct resource *res;
 	int ret;
 
@@ -1134,30 +1092,16 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 	if (platdev == NULL)
 		return -ENODEV;
 
-	cfg = s3c24xx_dev_to_cfg(&platdev->dev);
-
 	if (port->mapbase != 0)
 		return 0;
 
-	if (cfg->hwport > CONFIG_SERIAL_SAMSUNG_UARTS) {
-		printk(KERN_ERR "%s: port %d bigger than %d\n", __func__,
-		       cfg->hwport, CONFIG_SERIAL_SAMSUNG_UARTS);
-		return -ERANGE;
-	}
-
 	/* setup info for port */
 	port->dev	= &platdev->dev;
-	ourport->info	= info;
 
 	/* Startup sequence is different for s3c64xx and higher SoC's */
 	if (s3c24xx_serial_has_interrupt_mask(port))
 		s3c24xx_serial_ops.startup = s3c64xx_serial_startup;
 
-	/* copy the info in from provided structure */
-	ourport->port.fifosize = info->fifosize;
-
-	dbg("s3c24xx_serial_init_port: %p (hw %d)...\n", port, cfg->hwport);
-
 	port->uartclk = 1;
 
 	if (cfg->uart_flags & UPF_CONS_FLOW) {
@@ -1215,43 +1159,74 @@ static ssize_t s3c24xx_serial_show_clksrc(struct device *dev,
 	struct uart_port *port = s3c24xx_dev_to_port(dev);
 	struct s3c24xx_uart_port *ourport = to_ourport(port);
 
-	return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->clksrc->name);
+	return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->baudclk->name);
 }
 
 static DEVICE_ATTR(clock_source, S_IRUGO, s3c24xx_serial_show_clksrc, NULL);
 
+
 /* Device driver serial port probe */
 
+static const struct of_device_id s3c24xx_uart_dt_match[];
 static int probe_index;
 
-int s3c24xx_serial_probe(struct platform_device *dev,
-			 struct s3c24xx_uart_info *info)
+static inline struct s3c24xx_serial_drv_data *s3c24xx_get_driver_data(
+			struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(s3c24xx_uart_dt_match, pdev->dev.of_node);
+		return (struct s3c24xx_serial_drv_data *)match->data;
+	}
+#endif
+	return (struct s3c24xx_serial_drv_data *)
+			platform_get_device_id(pdev)->driver_data;
+}
+
+static int s3c24xx_serial_probe(struct platform_device *pdev)
 {
 	struct s3c24xx_uart_port *ourport;
 	int ret;
 
-	dbg("s3c24xx_serial_probe(%p, %p) %d\n", dev, info, probe_index);
+	dbg("s3c24xx_serial_probe(%p) %d\n", pdev, probe_index);
 
 	ourport = &s3c24xx_serial_ports[probe_index];
+
+	ourport->drv_data = s3c24xx_get_driver_data(pdev);
+	if (!ourport->drv_data) {
+		dev_err(&pdev->dev, "could not find driver data\n");
+		return -ENODEV;
+	}
+
+	ourport->info = ourport->drv_data->info;
+	ourport->cfg = (pdev->dev.platform_data) ?
+			(struct s3c2410_uartcfg *)pdev->dev.platform_data :
+			ourport->drv_data->def_cfg;
+
+	ourport->port.fifosize = (ourport->info->fifosize) ?
+		ourport->info->fifosize :
+		ourport->drv_data->fifosize[probe_index];
+
 	probe_index++;
 
 	dbg("%s: initialising port %p...\n", __func__, ourport);
 
-	ret = s3c24xx_serial_init_port(ourport, info, dev);
+	ret = s3c24xx_serial_init_port(ourport, pdev);
 	if (ret < 0)
 		goto probe_err;
 
 	dbg("%s: adding port\n", __func__);
 	uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
-	platform_set_drvdata(dev, &ourport->port);
+	platform_set_drvdata(pdev, &ourport->port);
 
-	ret = device_create_file(&dev->dev, &dev_attr_clock_source);
+	ret = device_create_file(&pdev->dev, &dev_attr_clock_source);
 	if (ret < 0)
-		printk(KERN_ERR "%s: failed to add clksrc attr.\n", __func__);
+		dev_err(&pdev->dev, "failed to add clock source attr.\n");
 
 	ret = s3c24xx_serial_cpufreq_register(ourport);
 	if (ret < 0)
-		dev_err(&dev->dev, "failed to add cpufreq notifier\n");
+		dev_err(&pdev->dev, "failed to add cpufreq notifier\n");
 
 	return 0;
 
@@ -1259,9 +1234,7 @@ int s3c24xx_serial_probe(struct platform_device *dev,
 	return ret;
 }
 
-EXPORT_SYMBOL_GPL(s3c24xx_serial_probe);
-
-int __devexit s3c24xx_serial_remove(struct platform_device *dev)
+static int __devexit s3c24xx_serial_remove(struct platform_device *dev)
 {
 	struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
 
@@ -1274,8 +1247,6 @@ int __devexit s3c24xx_serial_remove(struct platform_device *dev)
 	return 0;
 }
 
-EXPORT_SYMBOL_GPL(s3c24xx_serial_remove);
-
 /* UART power management code */
 #ifdef CONFIG_PM_SLEEP
 static int s3c24xx_serial_suspend(struct device *dev)
@@ -1315,41 +1286,6 @@ static const struct dev_pm_ops s3c24xx_serial_pm_ops = {
 #define SERIAL_SAMSUNG_PM_OPS	NULL
 #endif /* CONFIG_PM_SLEEP */
 
-int s3c24xx_serial_init(struct platform_driver *drv,
-			struct s3c24xx_uart_info *info)
-{
-	dbg("s3c24xx_serial_init(%p,%p)\n", drv, info);
-
-	drv->driver.pm = SERIAL_SAMSUNG_PM_OPS;
-
-	return platform_driver_register(drv);
-}
-
-EXPORT_SYMBOL_GPL(s3c24xx_serial_init);
-
-/* module initialisation code */
-
-static int __init s3c24xx_serial_modinit(void)
-{
-	int ret;
-
-	ret = uart_register_driver(&s3c24xx_uart_drv);
-	if (ret < 0) {
-		printk(KERN_ERR "failed to register UART driver\n");
-		return -1;
-	}
-
-	return 0;
-}
-
-static void __exit s3c24xx_serial_modexit(void)
-{
-	uart_unregister_driver(&s3c24xx_uart_drv);
-}
-
-module_init(s3c24xx_serial_modinit);
-module_exit(s3c24xx_serial_modexit);
-
 /* Console code */
 
 #ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
@@ -1395,12 +1331,13 @@ static void __init
 s3c24xx_serial_get_options(struct uart_port *port, int *baud,
 			   int *parity, int *bits)
 {
-	struct s3c24xx_uart_clksrc clksrc;
 	struct clk *clk;
 	unsigned int ulcon;
 	unsigned int ucon;
 	unsigned int ubrdiv;
 	unsigned long rate;
+	unsigned int clk_sel;
+	char clk_name[MAX_CLK_NAME_LENGTH];
 
 	ulcon  = rd_regl(port, S3C2410_ULCON);
 	ucon   = rd_regl(port, S3C2410_UCON);
@@ -1445,44 +1382,21 @@ s3c24xx_serial_get_options(struct uart_port *port, int *baud,
 
 		/* now calculate the baud rate */
 
-		s3c24xx_serial_getsource(port, &clksrc);
+		clk_sel = s3c24xx_serial_getsource(port);
+		sprintf(clk_name, "clk_uart_baud%d", clk_sel);
 
-		clk = clk_get(port->dev, clksrc.name);
+		clk = clk_get(port->dev, clk_name);
 		if (!IS_ERR(clk) && clk != NULL)
-			rate = clk_get_rate(clk) / clksrc.divisor;
+			rate = clk_get_rate(clk);
 		else
 			rate = 1;
 
-
 		*baud = rate / (16 * (ubrdiv + 1));
 		dbg("calculated baud %d\n", *baud);
 	}
 
 }
 
-/* s3c24xx_serial_init_ports
- *
- * initialise the serial ports from the machine provided initialisation
- * data.
-*/
-
-static int s3c24xx_serial_init_ports(struct s3c24xx_uart_info **info)
-{
-	struct s3c24xx_uart_port *ptr = s3c24xx_serial_ports;
-	struct platform_device **platdev_ptr;
-	int i;
-
-	dbg("s3c24xx_serial_init_ports: initialising ports...\n");
-
-	platdev_ptr = s3c24xx_uart_devs;
-
-	for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++, ptr++, platdev_ptr++) {
-		s3c24xx_serial_init_port(ptr, info[i], *platdev_ptr);
-	}
-
-	return 0;
-}
-
 static int __init
 s3c24xx_serial_console_setup(struct console *co, char *options)
 {
@@ -1526,11 +1440,6 @@ s3c24xx_serial_console_setup(struct console *co, char *options)
 	return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-/* s3c24xx_serial_initconsole
- *
- * initialise the console from one of the uart drivers
-*/
-
 static struct console s3c24xx_serial_console = {
 	.name		= S3C24XX_SERIAL_NAME,
 	.device		= uart_console_device,
@@ -1540,34 +1449,250 @@ static struct console s3c24xx_serial_console = {
 	.setup		= s3c24xx_serial_console_setup,
 	.data		= &s3c24xx_uart_drv,
 };
+#endif /* CONFIG_SERIAL_SAMSUNG_CONSOLE */
 
-int s3c24xx_serial_initconsole(struct platform_driver *drv,
-			       struct s3c24xx_uart_info **info)
+#ifdef CONFIG_CPU_S3C2410
+static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung S3C2410 UART",
+		.type		= PORT_S3C2410,
+		.fifosize	= 16,
+		.rx_fifomask	= S3C2410_UFSTAT_RXMASK,
+		.rx_fifoshift	= S3C2410_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S3C2410_UFSTAT_RXFULL,
+		.tx_fifofull	= S3C2410_UFSTAT_TXFULL,
+		.tx_fifomask	= S3C2410_UFSTAT_TXMASK,
+		.tx_fifoshift	= S3C2410_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL0,
+		.num_clks	= 2,
+		.clksel_mask	= S3C2410_UCON_CLKMASK,
+		.clksel_shift	= S3C2410_UCON_CLKSHIFT,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S3C2410_UCON_DEFAULT,
+		.ufcon		= S3C2410_UFCON_DEFAULT,
+	},
+};
+#define S3C2410_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2410_serial_drv_data)
+#else
+#define S3C2410_SERIAL_DRV_DATA (kernel_ulong_t)NULL
+#endif
 
-{
-	struct platform_device *dev = s3c24xx_uart_devs[0];
+#ifdef CONFIG_CPU_S3C2412
+static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung S3C2412 UART",
+		.type		= PORT_S3C2412,
+		.fifosize	= 64,
+		.has_divslot	= 1,
+		.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
+		.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
+		.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
+		.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
+		.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL2,
+		.num_clks	= 4,
+		.clksel_mask	= S3C2412_UCON_CLKMASK,
+		.clksel_shift	= S3C2412_UCON_CLKSHIFT,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S3C2410_UCON_DEFAULT,
+		.ufcon		= S3C2410_UFCON_DEFAULT,
+	},
+};
+#define S3C2412_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2412_serial_drv_data)
+#else
+#define S3C2412_SERIAL_DRV_DATA (kernel_ulong_t)NULL
+#endif
 
-	dbg("s3c24xx_serial_initconsole\n");
+#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2416) || \
+	defined(CONFIG_CPU_S3C2443)
+static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung S3C2440 UART",
+		.type		= PORT_S3C2440,
+		.fifosize	= 64,
+		.has_divslot	= 1,
+		.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
+		.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
+		.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
+		.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
+		.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL2,
+		.num_clks	= 4,
+		.clksel_mask	= S3C2412_UCON_CLKMASK,
+		.clksel_shift	= S3C2412_UCON_CLKSHIFT,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S3C2410_UCON_DEFAULT,
+		.ufcon		= S3C2410_UFCON_DEFAULT,
+	},
+};
+#define S3C2440_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2440_serial_drv_data)
+#else
+#define S3C2440_SERIAL_DRV_DATA (kernel_ulong_t)NULL
+#endif
 
-	/* select driver based on the cpu */
+#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410) || \
+	defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450) || \
+	defined(CONFIG_CPU_S5PC100)
+static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung S3C6400 UART",
+		.type		= PORT_S3C6400,
+		.fifosize	= 64,
+		.has_divslot	= 1,
+		.rx_fifomask	= S3C2440_UFSTAT_RXMASK,
+		.rx_fifoshift	= S3C2440_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S3C2440_UFSTAT_RXFULL,
+		.tx_fifofull	= S3C2440_UFSTAT_TXFULL,
+		.tx_fifomask	= S3C2440_UFSTAT_TXMASK,
+		.tx_fifoshift	= S3C2440_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL2,
+		.num_clks	= 4,
+		.clksel_mask	= S3C6400_UCON_CLKMASK,
+		.clksel_shift	= S3C6400_UCON_CLKSHIFT,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S3C2410_UCON_DEFAULT,
+		.ufcon		= S3C2410_UFCON_DEFAULT,
+	},
+};
+#define S3C6400_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c6400_serial_drv_data)
+#else
+#define S3C6400_SERIAL_DRV_DATA (kernel_ulong_t)NULL
+#endif
 
-	if (dev == NULL) {
-		printk(KERN_ERR "s3c24xx: no devices for console init\n");
-		return 0;
-	}
+#ifdef CONFIG_CPU_S5PV210
+static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung S5PV210 UART",
+		.type		= PORT_S3C6400,
+		.has_divslot	= 1,
+		.rx_fifomask	= S5PV210_UFSTAT_RXMASK,
+		.rx_fifoshift	= S5PV210_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S5PV210_UFSTAT_RXFULL,
+		.tx_fifofull	= S5PV210_UFSTAT_TXFULL,
+		.tx_fifomask	= S5PV210_UFSTAT_TXMASK,
+		.tx_fifoshift	= S5PV210_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL0,
+		.num_clks	= 2,
+		.clksel_mask	= S5PV210_UCON_CLKMASK,
+		.clksel_shift	= S5PV210_UCON_CLKSHIFT,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S5PV210_UCON_DEFAULT,
+		.ufcon		= S5PV210_UFCON_DEFAULT,
+	},
+	.fifosize = { 256, 64, 16, 16 },
+};
+#define S5PV210_SERIAL_DRV_DATA ((kernel_ulong_t)&s5pv210_serial_drv_data)
+#else
+#define S5PV210_SERIAL_DRV_DATA	(kernel_ulong_t)NULL
+#endif
 
-	if (strcmp(dev->name, drv->driver.name) != 0)
-		return 0;
+#ifdef CONFIG_CPU_EXYNOS4210
+static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = {
+	.info = &(struct s3c24xx_uart_info) {
+		.name		= "Samsung Exynos4 UART",
+		.type		= PORT_S3C6400,
+		.has_divslot	= 1,
+		.rx_fifomask	= S5PV210_UFSTAT_RXMASK,
+		.rx_fifoshift	= S5PV210_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S5PV210_UFSTAT_RXFULL,
+		.tx_fifofull	= S5PV210_UFSTAT_TXFULL,
+		.tx_fifomask	= S5PV210_UFSTAT_TXMASK,
+		.tx_fifoshift	= S5PV210_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL0,
+		.num_clks	= 1,
+		.clksel_mask	= 0,
+		.clksel_shift	= 0,
+	},
+	.def_cfg = &(struct s3c2410_uartcfg) {
+		.ucon		= S5PV210_UCON_DEFAULT,
+		.ufcon		= S5PV210_UFCON_DEFAULT,
+		.has_fracval	= 1,
+	},
+	.fifosize = { 256, 64, 16, 16 },
+};
+#define EXYNOS4210_SERIAL_DRV_DATA ((kernel_ulong_t)&exynos4210_serial_drv_data)
+#else
+#define EXYNOS4210_SERIAL_DRV_DATA (kernel_ulong_t)NULL
+#endif
 
-	s3c24xx_serial_console.data = &s3c24xx_uart_drv;
-	s3c24xx_serial_init_ports(info);
+static struct platform_device_id s3c24xx_serial_driver_ids[] = {
+	{
+		.name		= "s3c2410-uart",
+		.driver_data	= S3C2410_SERIAL_DRV_DATA,
+	}, {
+		.name		= "s3c2412-uart",
+		.driver_data	= S3C2412_SERIAL_DRV_DATA,
+	}, {
+		.name		= "s3c2440-uart",
+		.driver_data	= S3C2440_SERIAL_DRV_DATA,
+	}, {
+		.name		= "s3c6400-uart",
+		.driver_data	= S3C6400_SERIAL_DRV_DATA,
+	}, {
+		.name		= "s5pv210-uart",
+		.driver_data	= S5PV210_SERIAL_DRV_DATA,
+	}, {
+		.name		= "exynos4210-uart",
+		.driver_data	= EXYNOS4210_SERIAL_DRV_DATA,
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, s3c24xx_serial_driver_ids);
 
-	register_console(&s3c24xx_serial_console);
-	return 0;
+#ifdef CONFIG_OF
+static const struct of_device_id s3c24xx_uart_dt_match[] = {
+	{ .compatible = "samsung,exynos4210-uart",
+		.data = (void *)EXYNOS4210_SERIAL_DRV_DATA },
+	{},
+};
+MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
+#else
+#define s3c24xx_uart_dt_match NULL
+#endif
+
+static struct platform_driver samsung_serial_driver = {
+	.probe		= s3c24xx_serial_probe,
+	.remove		= __devexit_p(s3c24xx_serial_remove),
+	.id_table	= s3c24xx_serial_driver_ids,
+	.driver		= {
+		.name	= "samsung-uart",
+		.owner	= THIS_MODULE,
+		.pm	= SERIAL_SAMSUNG_PM_OPS,
+		.of_match_table	= s3c24xx_uart_dt_match,
+	},
+};
+
+/* module initialisation code */
+
+static int __init s3c24xx_serial_modinit(void)
+{
+	int ret;
+
+	ret = uart_register_driver(&s3c24xx_uart_drv);
+	if (ret < 0) {
+		printk(KERN_ERR "failed to register UART driver\n");
+		return -1;
+	}
+
+	return platform_driver_register(&samsung_serial_driver);
 }
 
-#endif /* CONFIG_SERIAL_SAMSUNG_CONSOLE */
+static void __exit s3c24xx_serial_modexit(void)
+{
+	uart_unregister_driver(&s3c24xx_uart_drv);
+}
+
+module_init(s3c24xx_serial_modinit);
+module_exit(s3c24xx_serial_modexit);
 
+MODULE_ALIAS("platform:samsung-uart");
 MODULE_DESCRIPTION("Samsung SoC Serial port driver");
 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h
index 8e87b788e5c6..1a4bca3e4179 100644
--- a/drivers/tty/serial/samsung.h
+++ b/drivers/tty/serial/samsung.h
@@ -19,20 +19,25 @@ struct s3c24xx_uart_info {
 	unsigned long		tx_fifomask;
 	unsigned long		tx_fifoshift;
 	unsigned long		tx_fifofull;
+	unsigned int		def_clk_sel;
+	unsigned long		num_clks;
+	unsigned long		clksel_mask;
+	unsigned long		clksel_shift;
 
 	/* uart port features */
 
 	unsigned int		has_divslot:1;
 
-	/* clock source control */
-
-	int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
-	int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk);
-
 	/* uart controls */
 	int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *);
 };
 
+struct s3c24xx_serial_drv_data {
+	struct s3c24xx_uart_info	*info;
+	struct s3c2410_uartcfg		*def_cfg;
+	unsigned int			fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
+};
+
 struct s3c24xx_uart_port {
 	unsigned char			rx_claimed;
 	unsigned char			tx_claimed;
@@ -43,10 +48,13 @@ struct s3c24xx_uart_port {
 	unsigned int			tx_irq;
 
 	struct s3c24xx_uart_info	*info;
-	struct s3c24xx_uart_clksrc	*clksrc;
 	struct clk			*clk;
 	struct clk			*baudclk;
 	struct uart_port		port;
+	struct s3c24xx_serial_drv_data	*drv_data;
+
+	/* reference to platform data */
+	struct s3c2410_uartcfg		*cfg;
 
 #ifdef CONFIG_CPU_FREQ
 	struct notifier_block		freq_transition;
@@ -56,7 +64,6 @@ struct s3c24xx_uart_port {
 /* conversion functions */
 
 #define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
-#define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data)
 
 /* register access controls */
 
@@ -69,17 +76,6 @@ struct s3c24xx_uart_port {
 #define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg))
 #define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg))
 
-extern int s3c24xx_serial_probe(struct platform_device *dev,
-				struct s3c24xx_uart_info *uart);
-
-extern int __devexit s3c24xx_serial_remove(struct platform_device *dev);
-
-extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
-				      struct s3c24xx_uart_info **uart);
-
-extern int s3c24xx_serial_init(struct platform_driver *drv,
-			       struct s3c24xx_uart_info *info);
-
 #ifdef CONFIG_SERIAL_SAMSUNG_DEBUG
 
 extern void printascii(const char *);
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c
index 75038ad2b242..e0b4b0a30a5a 100644
--- a/drivers/tty/serial/sc26xx.c
+++ b/drivers/tty/serial/sc26xx.c
@@ -736,19 +736,7 @@ static struct platform_driver sc26xx_driver = {
 	},
 };
 
-static int __init sc26xx_init(void)
-{
-	return platform_driver_register(&sc26xx_driver);
-}
-
-static void __exit sc26xx_exit(void)
-{
-	platform_driver_unregister(&sc26xx_driver);
-}
-
-module_init(sc26xx_init);
-module_exit(sc26xx_exit);
-
+module_platform_driver(sc26xx_driver);
 
 MODULE_AUTHOR("Thomas Bogendörfer");
 MODULE_DESCRIPTION("SC681/SC2692 serial driver");
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 0406d7ff505e..13056180adf5 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -22,6 +22,7 @@
  */
 #include <linux/module.h>
 #include <linux/tty.h>
+#include <linux/tty_flip.h>
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/console.h>
@@ -60,6 +61,8 @@ static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
 static void uart_wait_until_sent(struct tty_struct *tty, int timeout);
 static void uart_change_pm(struct uart_state *state, int pm_state);
 
+static void uart_port_shutdown(struct tty_port *port);
+
 /*
  * This routine is used by the interrupt handler to schedule processing in
  * the software interrupt portion of the driver.
@@ -128,25 +131,16 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
  * Startup the port.  This will be called once per open.  All calls
  * will be serialised by the per-port mutex.
  */
-static int uart_startup(struct tty_struct *tty, struct uart_state *state, int init_hw)
+static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
+		int init_hw)
 {
 	struct uart_port *uport = state->uart_port;
 	struct tty_port *port = &state->port;
 	unsigned long page;
 	int retval = 0;
 
-	if (port->flags & ASYNC_INITIALIZED)
-		return 0;
-
-	/*
-	 * Set the TTY IO error marker - we will only clear this
-	 * once we have successfully opened the port.  Also set
-	 * up the tty->alt_speed kludge
-	 */
-	set_bit(TTY_IO_ERROR, &tty->flags);
-
 	if (uport->type == PORT_UNKNOWN)
-		return 0;
+		return 1;
 
 	/*
 	 * Initialise and allocate the transmit and temporary
@@ -188,10 +182,6 @@ static int uart_startup(struct tty_struct *tty, struct uart_state *state, int in
 				tty->hw_stopped = 1;
 			spin_unlock_irq(&uport->lock);
 		}
-
-		set_bit(ASYNCB_INITIALIZED, &port->flags);
-
-		clear_bit(TTY_IO_ERROR, &tty->flags);
 	}
 
 	/*
@@ -200,6 +190,31 @@ static int uart_startup(struct tty_struct *tty, struct uart_state *state, int in
 	 * now.
 	 */
 	if (retval && capable(CAP_SYS_ADMIN))
+		return 1;
+
+	return retval;
+}
+
+static int uart_startup(struct tty_struct *tty, struct uart_state *state,
+		int init_hw)
+{
+	struct tty_port *port = &state->port;
+	int retval;
+
+	if (port->flags & ASYNC_INITIALIZED)
+		return 0;
+
+	/*
+	 * Set the TTY IO error marker - we will only clear this
+	 * once we have successfully opened the port.
+	 */
+	set_bit(TTY_IO_ERROR, &tty->flags);
+
+	retval = uart_port_startup(tty, state, init_hw);
+	if (!retval) {
+		set_bit(ASYNCB_INITIALIZED, &port->flags);
+		clear_bit(TTY_IO_ERROR, &tty->flags);
+	} else if (retval > 0)
 		retval = 0;
 
 	return retval;
@@ -228,24 +243,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 		if (!tty || (tty->termios->c_cflag & HUPCL))
 			uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
 
-		/*
-		 * clear delta_msr_wait queue to avoid mem leaks: we may free
-		 * the irq here so the queue might never be woken up.  Note
-		 * that we won't end up waiting on delta_msr_wait again since
-		 * any outstanding file descriptors should be pointing at
-		 * hung_up_tty_fops now.
-		 */
-		wake_up_interruptible(&port->delta_msr_wait);
-
-		/*
-		 * Free the IRQ and disable the port.
-		 */
-		uport->ops->shutdown(uport);
-
-		/*
-		 * Ensure that the IRQ handler isn't running on another CPU.
-		 */
-		synchronize_irq(uport->irq);
+		uart_port_shutdown(port);
 	}
 
 	/*
@@ -423,7 +421,7 @@ uart_get_divisor(struct uart_port *port, unsigned int baud)
 	if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST)
 		quot = port->custom_divisor;
 	else
-		quot = (port->uartclk + (8 * baud)) / (16 * baud);
+		quot = DIV_ROUND_CLOSEST(port->uartclk, 16 * baud);
 
 	return quot;
 }
@@ -658,10 +656,10 @@ static int uart_get_info(struct uart_state *state,
 	tmp.flags	    = uport->flags;
 	tmp.xmit_fifo_size  = uport->fifosize;
 	tmp.baud_base	    = uport->uartclk / 16;
-	tmp.close_delay	    = port->close_delay / 10;
+	tmp.close_delay	    = jiffies_to_msecs(port->close_delay) / 10;
 	tmp.closing_wait    = port->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
 				ASYNC_CLOSING_WAIT_NONE :
-				port->closing_wait / 10;
+				jiffies_to_msecs(port->closing_wait) / 10;
 	tmp.custom_divisor  = uport->custom_divisor;
 	tmp.hub6	    = uport->hub6;
 	tmp.io_type         = uport->iotype;
@@ -695,9 +693,10 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
 		new_port += (unsigned long) new_serial.port_high << HIGH_BITS_OFFSET;
 
 	new_serial.irq = irq_canonicalize(new_serial.irq);
-	close_delay = new_serial.close_delay * 10;
+	close_delay = msecs_to_jiffies(new_serial.close_delay * 10);
 	closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
-			ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+			ASYNC_CLOSING_WAIT_NONE :
+			msecs_to_jiffies(new_serial.closing_wait * 10);
 
 	/*
 	 * This semaphore protects port->count.  It is also
@@ -1265,47 +1264,8 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 
 	pr_debug("uart_close(%d) called\n", uport->line);
 
-	spin_lock_irqsave(&port->lock, flags);
-
-	if (tty_hung_up_p(filp)) {
-		spin_unlock_irqrestore(&port->lock, flags);
+	if (tty_port_close_start(port, tty, filp) == 0)
 		return;
-	}
-
-	if ((tty->count == 1) && (port->count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  port->count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		printk(KERN_ERR "uart_close: bad serial port count; tty->count is 1, "
-		       "port->count is %d\n", port->count);
-		port->count = 1;
-	}
-	if (--port->count < 0) {
-		printk(KERN_ERR "uart_close: bad serial port count for %s: %d\n",
-		       tty->name, port->count);
-		port->count = 0;
-	}
-	if (port->count) {
-		spin_unlock_irqrestore(&port->lock, flags);
-		return;
-	}
-
-	/*
-	 * Now we wait for the transmit buffer to clear; and we notify
-	 * the line discipline to only process XON/XOFF characters by
-	 * setting tty->closing.
-	 */
-	set_bit(ASYNCB_CLOSING, &port->flags);
-	tty->closing = 1;
-	spin_unlock_irqrestore(&port->lock, flags);
-
-	if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-		tty_wait_until_sent_from_close(tty,
-				msecs_to_jiffies(port->closing_wait));
 
 	/*
 	 * At this point, we stop accepting input.  To do this, we
@@ -1337,7 +1297,8 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 	if (port->blocked_open) {
 		spin_unlock_irqrestore(&port->lock, flags);
 		if (port->close_delay)
-			msleep_interruptible(port->close_delay);
+			msleep_interruptible(
+					jiffies_to_msecs(port->close_delay));
 		spin_lock_irqsave(&port->lock, flags);
 	} else if (!uart_console(uport)) {
 		spin_unlock_irqrestore(&port->lock, flags);
@@ -1441,6 +1402,36 @@ static void uart_hangup(struct tty_struct *tty)
 	mutex_unlock(&port->mutex);
 }
 
+static int uart_port_activate(struct tty_port *port, struct tty_struct *tty)
+{
+	return 0;
+}
+
+static void uart_port_shutdown(struct tty_port *port)
+{
+	struct uart_state *state = container_of(port, struct uart_state, port);
+	struct uart_port *uport = state->uart_port;
+
+	/*
+	 * clear delta_msr_wait queue to avoid mem leaks: we may free
+	 * the irq here so the queue might never be woken up.  Note
+	 * that we won't end up waiting on delta_msr_wait again since
+	 * any outstanding file descriptors should be pointing at
+	 * hung_up_tty_fops now.
+	 */
+	wake_up_interruptible(&port->delta_msr_wait);
+
+	/*
+	 * Free the IRQ and disable the port.
+	 */
+	uport->ops->shutdown(uport);
+
+	/*
+	 * Ensure that the IRQ handler isn't running on another CPU.
+	 */
+	synchronize_irq(uport->irq);
+}
+
 static int uart_carrier_raised(struct tty_port *port)
 {
 	struct uart_state *state = container_of(port, struct uart_state, port);
@@ -1466,33 +1457,6 @@ static void uart_dtr_rts(struct tty_port *port, int onoff)
 		uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
 }
 
-static struct uart_state *uart_get(struct uart_driver *drv, int line)
-{
-	struct uart_state *state;
-	struct tty_port *port;
-	int ret = 0;
-
-	state = drv->state + line;
-	port = &state->port;
-	if (mutex_lock_interruptible(&port->mutex)) {
-		ret = -ERESTARTSYS;
-		goto err;
-	}
-
-	port->count++;
-	if (!state->uart_port || state->uart_port->flags & UPF_DEAD) {
-		ret = -ENXIO;
-		goto err_unlock;
-	}
-	return state;
-
- err_unlock:
-	port->count--;
-	mutex_unlock(&port->mutex);
- err:
-	return ERR_PTR(ret);
-}
-
 /*
  * calls to uart_open are serialised by the BKL in
  *   fs/char_dev.c:chrdev_open()
@@ -1506,26 +1470,29 @@ static struct uart_state *uart_get(struct uart_driver *drv, int line)
 static int uart_open(struct tty_struct *tty, struct file *filp)
 {
 	struct uart_driver *drv = (struct uart_driver *)tty->driver->driver_state;
-	struct uart_state *state;
-	struct tty_port *port;
 	int retval, line = tty->index;
+	struct uart_state *state = drv->state + line;
+	struct tty_port *port = &state->port;
 
 	pr_debug("uart_open(%d) called\n", line);
 
 	/*
-	 * We take the semaphore inside uart_get to guarantee that we won't
-	 * be re-entered while allocating the state structure, or while we
-	 * request any IRQs that the driver may need.  This also has the nice
-	 * side-effect that it delays the action of uart_hangup, so we can
-	 * guarantee that state->port.tty will always contain something
-	 * reasonable.
+	 * We take the semaphore here to guarantee that we won't be re-entered
+	 * while allocating the state structure, or while we request any IRQs
+	 * that the driver may need.  This also has the nice side-effect that
+	 * it delays the action of uart_hangup, so we can guarantee that
+	 * state->port.tty will always contain something reasonable.
 	 */
-	state = uart_get(drv, line);
-	if (IS_ERR(state)) {
-		retval = PTR_ERR(state);
-		goto fail;
+	if (mutex_lock_interruptible(&port->mutex)) {
+		retval = -ERESTARTSYS;
+		goto end;
+	}
+
+	port->count++;
+	if (!state->uart_port || state->uart_port->flags & UPF_DEAD) {
+		retval = -ENXIO;
+		goto err_dec_count;
 	}
-	port = &state->port;
 
 	/*
 	 * Once we set tty->driver_data here, we are guaranteed that
@@ -1535,7 +1502,6 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 	tty->driver_data = state;
 	state->uart_port->state = state;
 	tty->low_latency = (state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0;
-	tty->alt_speed = 0;
 	tty_port_tty_set(port, tty);
 
 	/*
@@ -1543,9 +1509,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 	 */
 	if (tty_hung_up_p(filp)) {
 		retval = -EAGAIN;
-		port->count--;
-		mutex_unlock(&port->mutex);
-		goto fail;
+		goto err_dec_count;
 	}
 
 	/*
@@ -1566,8 +1530,12 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 	if (retval == 0)
 		retval = tty_port_block_til_ready(port, tty, filp);
 
-fail:
+end:
 	return retval;
+err_dec_count:
+	port->count--;
+	mutex_unlock(&port->mutex);
+	goto end;
 }
 
 static const char *uart_type(struct uart_port *port)
@@ -1858,6 +1826,14 @@ uart_set_options(struct uart_port *port, struct console *co,
 EXPORT_SYMBOL_GPL(uart_set_options);
 #endif /* CONFIG_SERIAL_CORE_CONSOLE */
 
+/**
+ * uart_change_pm - set power state of the port
+ *
+ * @state: port descriptor
+ * @pm_state: new state
+ *
+ * Locking: port->mutex has to be held
+ */
 static void uart_change_pm(struct uart_state *state, int pm_state)
 {
 	struct uart_port *port = state->uart_port;
@@ -2214,6 +2190,8 @@ static const struct tty_operations uart_ops = {
 };
 
 static const struct tty_port_operations uart_port_ops = {
+	.activate	= uart_port_activate,
+	.shutdown	= uart_port_shutdown,
 	.carrier_raised = uart_carrier_raised,
 	.dtr_rts	= uart_dtr_rts,
 };
@@ -2275,8 +2253,8 @@ int uart_register_driver(struct uart_driver *drv)
 
 		tty_port_init(port);
 		port->ops = &uart_port_ops;
-		port->close_delay     = 500;	/* .5 seconds */
-		port->closing_wait    = 30000;	/* 30 seconds */
+		port->close_delay     = HZ / 2;	/* .5 seconds */
+		port->closing_wait    = 30 * HZ;/* 30 seconds */
 	}
 
 	retval = tty_register_driver(normal);
@@ -2370,11 +2348,11 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
 	 */
 	tty_dev = tty_register_device(drv->tty_driver, uport->line, uport->dev);
 	if (likely(!IS_ERR(tty_dev))) {
-		device_init_wakeup(tty_dev, 1);
-		device_set_wakeup_enable(tty_dev, 0);
-	} else
+		device_set_wakeup_capable(tty_dev, 1);
+	} else {
 		printk(KERN_ERR "Cannot register tty device on line %d\n",
 		       uport->line);
+	}
 
 	/*
 	 * Ensure UPF_DEAD is not set.
@@ -2467,6 +2445,99 @@ int uart_match_port(struct uart_port *port1, struct uart_port *port2)
 }
 EXPORT_SYMBOL(uart_match_port);
 
+/**
+ *	uart_handle_dcd_change - handle a change of carrier detect state
+ *	@uport: uart_port structure for the open port
+ *	@status: new carrier detect status, nonzero if active
+ */
+void uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
+{
+	struct uart_state *state = uport->state;
+	struct tty_port *port = &state->port;
+	struct tty_ldisc *ld = tty_ldisc_ref(port->tty);
+	struct pps_event_time ts;
+
+	if (ld && ld->ops->dcd_change)
+		pps_get_ts(&ts);
+
+	uport->icount.dcd++;
+#ifdef CONFIG_HARD_PPS
+	if ((uport->flags & UPF_HARDPPS_CD) && status)
+		hardpps();
+#endif
+
+	if (port->flags & ASYNC_CHECK_CD) {
+		if (status)
+			wake_up_interruptible(&port->open_wait);
+		else if (port->tty)
+			tty_hangup(port->tty);
+	}
+
+	if (ld && ld->ops->dcd_change)
+		ld->ops->dcd_change(port->tty, status, &ts);
+	if (ld)
+		tty_ldisc_deref(ld);
+}
+EXPORT_SYMBOL_GPL(uart_handle_dcd_change);
+
+/**
+ *	uart_handle_cts_change - handle a change of clear-to-send state
+ *	@uport: uart_port structure for the open port
+ *	@status: new clear to send status, nonzero if active
+ */
+void uart_handle_cts_change(struct uart_port *uport, unsigned int status)
+{
+	struct tty_port *port = &uport->state->port;
+	struct tty_struct *tty = port->tty;
+
+	uport->icount.cts++;
+
+	if (port->flags & ASYNC_CTS_FLOW) {
+		if (tty->hw_stopped) {
+			if (status) {
+				tty->hw_stopped = 0;
+				uport->ops->start_tx(uport);
+				uart_write_wakeup(uport);
+			}
+		} else {
+			if (!status) {
+				tty->hw_stopped = 1;
+				uport->ops->stop_tx(uport);
+			}
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(uart_handle_cts_change);
+
+/**
+ * uart_insert_char - push a char to the uart layer
+ *
+ * User is responsible to call tty_flip_buffer_push when they are done with
+ * insertion.
+ *
+ * @port: corresponding port
+ * @status: state of the serial port RX buffer (LSR for 8250)
+ * @overrun: mask of overrun bits in @status
+ * @ch: character to push
+ * @flag: flag for the character (see TTY_NORMAL and friends)
+ */
+void uart_insert_char(struct uart_port *port, unsigned int status,
+		 unsigned int overrun, unsigned int ch, unsigned int flag)
+{
+	struct tty_struct *tty = port->state->port.tty;
+
+	if ((status & port->ignore_status_mask & ~overrun) == 0)
+		tty_insert_flip_char(tty, ch, flag);
+
+	/*
+	 * Overrun is special.  Since it's reported immediately,
+	 * it doesn't affect the current character.
+	 */
+	if (status & ~port->ignore_status_mask & overrun)
+		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+}
+EXPORT_SYMBOL_GPL(uart_insert_char);
+
 EXPORT_SYMBOL(uart_write_wakeup);
 EXPORT_SYMBOL(uart_register_driver);
 EXPORT_SYMBOL(uart_unregister_driver);
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index aff9d612dff0..75085795528e 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -50,6 +50,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/scatterlist.h>
 #include <linux/slab.h>
+#include <linux/gpio.h>
 
 #ifdef CONFIG_SUPERH
 #include <asm/sh_bios.h>
@@ -73,6 +74,7 @@ struct sci_port {
 	struct clk		*fclk;
 
 	char			*irqstr[SCIx_NR_IRQS];
+	char			*gpiostr[SCIx_NR_FNS];
 
 	struct dma_chan			*chan_tx;
 	struct dma_chan			*chan_rx;
@@ -474,8 +476,15 @@ static void sci_init_pins(struct uart_port *port, unsigned int cflag)
 	if (!reg->size)
 		return;
 
-	if (!(cflag & CRTSCTS))
-		sci_out(port, SCSPTR, 0x0080); /* Set RTS = 1 */
+	if ((s->cfg->capabilities & SCIx_HAVE_RTSCTS) &&
+	    ((!(cflag & CRTSCTS)))) {
+		unsigned short status;
+
+		status = sci_in(port, SCSPTR);
+		status &= ~SCSPTR_CTSIO;
+		status |= SCSPTR_RTSIO;
+		sci_out(port, SCSPTR, status); /* Set RTS = 1 */
+	}
 }
 
 static int sci_txfill(struct uart_port *port)
@@ -621,6 +630,7 @@ static void sci_receive_chars(struct uart_port *port)
 		} else {
 			for (i = 0; i < count; i++) {
 				char c = sci_in(port, SCxRDR);
+
 				status = sci_in(port, SCxSR);
 #if defined(CONFIG_CPU_SH3)
 				/* Skip "chars" during break */
@@ -649,9 +659,11 @@ static void sci_receive_chars(struct uart_port *port)
 				/* Store data and status */
 				if (status & SCxSR_FER(port)) {
 					flag = TTY_FRAME;
+					port->icount.frame++;
 					dev_notice(port->dev, "frame error\n");
 				} else if (status & SCxSR_PER(port)) {
 					flag = TTY_PARITY;
+					port->icount.parity++;
 					dev_notice(port->dev, "parity error\n");
 				} else
 					flag = TTY_NORMAL;
@@ -723,6 +735,8 @@ static int sci_handle_errors(struct uart_port *port)
 	 */
 	if (s->cfg->overrun_bit != SCIx_NOT_SUPPORTED) {
 		if (status & (1 << s->cfg->overrun_bit)) {
+			port->icount.overrun++;
+
 			/* overrun error */
 			if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
 				copied++;
@@ -737,6 +751,8 @@ static int sci_handle_errors(struct uart_port *port)
 			struct sci_port *sci_port = to_sci_port(port);
 
 			if (!sci_port->break_flag) {
+				port->icount.brk++;
+
 				sci_port->break_flag = 1;
 				sci_schedule_break_timer(sci_port);
 
@@ -752,6 +768,8 @@ static int sci_handle_errors(struct uart_port *port)
 
 		} else {
 			/* frame error */
+			port->icount.frame++;
+
 			if (tty_insert_flip_char(tty, 0, TTY_FRAME))
 				copied++;
 
@@ -761,6 +779,8 @@ static int sci_handle_errors(struct uart_port *port)
 
 	if (status & SCxSR_PER(port)) {
 		/* parity error */
+		port->icount.parity++;
+
 		if (tty_insert_flip_char(tty, 0, TTY_PARITY))
 			copied++;
 
@@ -787,6 +807,8 @@ static int sci_handle_fifo_overrun(struct uart_port *port)
 	if ((sci_in(port, SCLSR) & (1 << s->cfg->overrun_bit))) {
 		sci_out(port, SCLSR, 0);
 
+		port->icount.overrun++;
+
 		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 		tty_flip_buffer_push(tty);
 
@@ -812,6 +834,9 @@ static int sci_handle_breaks(struct uart_port *port)
 		/* Debounce break */
 		s->break_flag = 1;
 #endif
+
+		port->icount.brk++;
+
 		/* Notify of BREAK */
 		if (tty_insert_flip_char(tty, 0, TTY_BREAK))
 			copied++;
@@ -1082,6 +1107,67 @@ static void sci_free_irq(struct sci_port *port)
 	}
 }
 
+static const char *sci_gpio_names[SCIx_NR_FNS] = {
+	"sck", "rxd", "txd", "cts", "rts",
+};
+
+static const char *sci_gpio_str(unsigned int index)
+{
+	return sci_gpio_names[index];
+}
+
+static void __devinit sci_init_gpios(struct sci_port *port)
+{
+	struct uart_port *up = &port->port;
+	int i;
+
+	if (!port->cfg)
+		return;
+
+	for (i = 0; i < SCIx_NR_FNS; i++) {
+		const char *desc;
+		int ret;
+
+		if (!port->cfg->gpios[i])
+			continue;
+
+		desc = sci_gpio_str(i);
+
+		port->gpiostr[i] = kasprintf(GFP_KERNEL, "%s:%s",
+					     dev_name(up->dev), desc);
+
+		/*
+		 * If we've failed the allocation, we can still continue
+		 * on with a NULL string.
+		 */
+		if (!port->gpiostr[i])
+			dev_notice(up->dev, "%s string allocation failure\n",
+				   desc);
+
+		ret = gpio_request(port->cfg->gpios[i], port->gpiostr[i]);
+		if (unlikely(ret != 0)) {
+			dev_notice(up->dev, "failed %s gpio request\n", desc);
+
+			/*
+			 * If we can't get the GPIO for whatever reason,
+			 * no point in keeping the verbose string around.
+			 */
+			kfree(port->gpiostr[i]);
+		}
+	}
+}
+
+static void sci_free_gpios(struct sci_port *port)
+{
+	int i;
+
+	for (i = 0; i < SCIx_NR_FNS; i++)
+		if (port->cfg->gpios[i]) {
+			gpio_free(port->cfg->gpios[i]);
+			kfree(port->gpiostr[i]);
+		}
+}
+
 static unsigned int sci_tx_empty(struct uart_port *port)
 {
 	unsigned short status = sci_in(port, SCxSR);
@@ -1090,19 +1176,39 @@ static unsigned int sci_tx_empty(struct uart_port *port)
 	return (status & SCxSR_TEND(port)) && !in_tx_fifo ? TIOCSER_TEMT : 0;
 }
 
+/*
+ * Modem control is a bit of a mixed bag for SCI(F) ports. Generally
+ * CTS/RTS is supported in hardware by at least one port and controlled
+ * via SCSPTR (SCxPCR for SCIFA/B parts), or external pins (presently
+ * handled via the ->init_pins() op, which is a bit of a one-way street,
+ * lacking any ability to defer pin control -- this will later be
+ * converted over to the GPIO framework).
+ *
+ * Other modes (such as loopback) are supported generically on certain
+ * port types, but not others. For these it's sufficient to test for the
+ * existence of the support register and simply ignore the port type.
+ */
 static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
-	/* This routine is used for seting signals of: DTR, DCD, CTS/RTS */
-	/* We use SCIF's hardware for CTS/RTS, so don't need any for that. */
-	/* If you have signals for DTR and DCD, please implement here. */
+	if (mctrl & TIOCM_LOOP) {
+		struct plat_sci_reg *reg;
+
+		/*
+		 * Standard loopback mode for SCFCR ports.
+		 */
+		reg = sci_getreg(port, SCFCR);
+		if (reg->size)
+			sci_out(port, SCFCR, sci_in(port, SCFCR) | 1);
+	}
 }
 
 static unsigned int sci_get_mctrl(struct uart_port *port)
 {
-	/* This routine is used for getting signals of: DTR, DCD, DSR, RI,
-	   and CTS/RTS */
-
-	return TIOCM_DTR | TIOCM_RTS | TIOCM_CTS | TIOCM_DSR;
+	/*
+	 * CTS/RTS is handled in hardware when supported, while nothing
+	 * else is wired up. Keep it simple and simply assert DSR/CAR.
+	 */
+	return TIOCM_DSR | TIOCM_CAR;
 }
 
 #ifdef CONFIG_SERIAL_SH_SCI_DMA
@@ -1233,7 +1339,7 @@ static void sci_submit_rx(struct sci_port *s)
 		struct dma_async_tx_descriptor *desc;
 
 		desc = chan->device->device_prep_slave_sg(chan,
-			sg, 1, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT);
+			sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
 
 		if (desc) {
 			s->desc_rx[i] = desc;
@@ -1348,7 +1454,7 @@ static void work_fn_tx(struct work_struct *work)
 	BUG_ON(!sg_dma_len(sg));
 
 	desc = chan->device->device_prep_slave_sg(chan,
-			sg, s->sg_len_tx, DMA_TO_DEVICE,
+			sg, s->sg_len_tx, DMA_MEM_TO_DEV,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		/* switch to PIO */
@@ -1449,12 +1555,17 @@ static void sci_stop_rx(struct uart_port *port)
 
 static void sci_enable_ms(struct uart_port *port)
 {
-	/* Nothing here yet .. */
+	/*
+	 * Not supported by hardware, always a nop.
+	 */
 }
 
 static void sci_break_ctl(struct uart_port *port, int break_state)
 {
-	/* Nothing here yet .. */
+	/*
+	 * Not supported by hardware. Most parts couple break and rx
+	 * interrupts together, with break detection always enabled.
+	 */
 }
 
 #ifdef CONFIG_SERIAL_SH_SCI_DMA
@@ -1652,6 +1763,7 @@ static unsigned int sci_scbrr_calc(unsigned int algo_id, unsigned int bps,
 
 static void sci_reset(struct uart_port *port)
 {
+	struct plat_sci_reg *reg;
 	unsigned int status;
 
 	do {
@@ -1660,7 +1772,8 @@ static void sci_reset(struct uart_port *port)
 
 	sci_out(port, SCSCR, 0x00);	/* TE=0, RE=0, CKE1=0 */
 
-	if (port->type != PORT_SCI)
+	reg = sci_getreg(port, SCFCR);
+	if (reg->size)
 		sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
 }
 
@@ -1668,9 +1781,9 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
 			    struct ktermios *old)
 {
 	struct sci_port *s = to_sci_port(port);
+	struct plat_sci_reg *reg;
 	unsigned int baud, smr_val, max_baud;
 	int t = -1;
-	u16 scfcr = 0;
 
 	/*
 	 * earlyprintk comes here early on with port->uartclk set to zero.
@@ -1720,7 +1833,27 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
 	}
 
 	sci_init_pins(port, termios->c_cflag);
-	sci_out(port, SCFCR, scfcr | ((termios->c_cflag & CRTSCTS) ? SCFCR_MCE : 0));
+
+	reg = sci_getreg(port, SCFCR);
+	if (reg->size) {
+		unsigned short ctrl = sci_in(port, SCFCR);
+
+		if (s->cfg->capabilities & SCIx_HAVE_RTSCTS) {
+			if (termios->c_cflag & CRTSCTS)
+				ctrl |= SCFCR_MCE;
+			else
+				ctrl &= ~SCFCR_MCE;
+		}
+
+		/*
+		 * As we've done a sci_reset() above, ensure we don't
+		 * interfere with the FIFOs while toggling MCE. As the
+		 * reset values could still be set, simply mask them out.
+		 */
+		ctrl &= ~(SCFCR_RFRST | SCFCR_TFRST);
+
+		sci_out(port, SCFCR, ctrl);
+	}
 
 	sci_out(port, SCSCR, s->cfg->scscr);
 
@@ -1892,6 +2025,8 @@ static int __devinit sci_init_single(struct platform_device *dev,
 	struct uart_port *port = &sci_port->port;
 	int ret;
 
+	sci_port->cfg	= p;
+
 	port->ops	= &sci_uart_ops;
 	port->iotype	= UPIO_MEM;
 	port->line	= index;
@@ -1937,6 +2072,8 @@ static int __devinit sci_init_single(struct platform_device *dev,
 
 		port->dev = &dev->dev;
 
+		sci_init_gpios(sci_port);
+
 		pm_runtime_irq_safe(&dev->dev);
 		pm_runtime_enable(&dev->dev);
 	}
@@ -1971,8 +2108,6 @@ static int __devinit sci_init_single(struct platform_device *dev,
 		p->error_mask |= (1 << p->overrun_bit);
 	}
 
-	sci_port->cfg		= p;
-
 	port->mapbase		= p->mapbase;
 	port->type		= p->type;
 	port->flags		= p->flags;
@@ -2113,9 +2248,16 @@ static int sci_runtime_suspend(struct device *dev)
 	struct uart_port *port = &sci_port->port;
 
 	if (uart_console(port)) {
+		struct plat_sci_reg *reg;
+
 		sci_port->saved_smr = sci_in(port, SCSMR);
 		sci_port->saved_brr = sci_in(port, SCBRR);
-		sci_port->saved_fcr = sci_in(port, SCFCR);
+
+		reg = sci_getreg(port, SCFCR);
+		if (reg->size)
+			sci_port->saved_fcr = sci_in(port, SCFCR);
+		else
+			sci_port->saved_fcr = 0;
 	}
 	return 0;
 }
@@ -2129,7 +2271,10 @@ static int sci_runtime_resume(struct device *dev)
 		sci_reset(port);
 		sci_out(port, SCSMR, sci_port->saved_smr);
 		sci_out(port, SCBRR, sci_port->saved_brr);
-		sci_out(port, SCFCR, sci_port->saved_fcr);
+
+		if (sci_port->saved_fcr)
+			sci_out(port, SCFCR, sci_port->saved_fcr);
+
 		sci_out(port, SCSCR, sci_port->cfg->scscr);
 	}
 	return 0;
@@ -2169,6 +2314,8 @@ static int sci_remove(struct platform_device *dev)
 	cpufreq_unregister_notifier(&port->freq_transition,
 				    CPUFREQ_TRANSITION_NOTIFIER);
 
+	sci_free_gpios(port);
+
 	uart_remove_one_port(&sci_uart_driver, &port->port);
 
 	clk_put(port->iclk);
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h
index e9bed038aa1f..a1a2d364f92b 100644
--- a/drivers/tty/serial/sh-sci.h
+++ b/drivers/tty/serial/sh-sci.h
@@ -17,7 +17,9 @@
     defined(CONFIG_ARCH_SH73A0) || \
     defined(CONFIG_ARCH_SH7367) || \
     defined(CONFIG_ARCH_SH7377) || \
-    defined(CONFIG_ARCH_SH7372)
+    defined(CONFIG_ARCH_SH7372) || \
+    defined(CONFIG_ARCH_R8A7740)
+
 # define SCxSR_RDxF_CLEAR(port)	 (sci_in(port, SCxSR) & 0xfffc)
 # define SCxSR_ERROR_CLEAR(port) (sci_in(port, SCxSR) & 0xfd73)
 # define SCxSR_TDxE_CLEAR(port)	 (sci_in(port, SCxSR) & 0xffdf)
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
new file mode 100644
index 000000000000..a60523fee11b
--- /dev/null
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -0,0 +1,783 @@
+/*
+ * Driver for CSR SiRFprimaII onboard UARTs.
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/sysrq.h>
+#include <linux/console.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include "sirfsoc_uart.h"
+
+static unsigned int
+sirfsoc_uart_pio_tx_chars(struct sirfsoc_uart_port *sirfport, int count);
+static unsigned int
+sirfsoc_uart_pio_rx_chars(struct uart_port *port, unsigned int max_rx_count);
+static struct uart_driver sirfsoc_uart_drv;
+
+static const struct sirfsoc_baudrate_to_regv baudrate_to_regv[] = {
+	{4000000, 2359296},
+	{3500000, 1310721},
+	{3000000, 1572865},
+	{2500000, 1245186},
+	{2000000, 1572866},
+	{1500000, 1245188},
+	{1152000, 1638404},
+	{1000000, 1572869},
+	{921600, 1114120},
+	{576000, 1245196},
+	{500000, 1245198},
+	{460800, 1572876},
+	{230400, 1310750},
+	{115200, 1310781},
+	{57600, 1310843},
+	{38400, 1114328},
+	{19200, 1114545},
+	{9600, 1114979},
+};
+
+static struct sirfsoc_uart_port sirfsoc_uart_ports[SIRFSOC_UART_NR] = {
+	[0] = {
+		.port = {
+			.iotype		= UPIO_MEM,
+			.flags		= UPF_BOOT_AUTOCONF,
+			.line		= 0,
+		},
+	},
+	[1] = {
+		.port = {
+			.iotype		= UPIO_MEM,
+			.flags		= UPF_BOOT_AUTOCONF,
+			.line		= 1,
+		},
+	},
+	[2] = {
+		.port = {
+			.iotype		= UPIO_MEM,
+			.flags		= UPF_BOOT_AUTOCONF,
+			.line		= 2,
+		},
+	},
+};
+
+static inline struct sirfsoc_uart_port *to_sirfport(struct uart_port *port)
+{
+	return container_of(port, struct sirfsoc_uart_port, port);
+}
+
+static inline unsigned int sirfsoc_uart_tx_empty(struct uart_port *port)
+{
+	unsigned long reg;
+	reg = rd_regl(port, SIRFUART_TX_FIFO_STATUS);
+	if (reg & SIRFUART_FIFOEMPTY_MASK(port))
+		return TIOCSER_TEMT;
+	else
+		return 0;
+}
+
+static unsigned int sirfsoc_uart_get_mctrl(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	if (!(sirfport->ms_enabled)) {
+		goto cts_asserted;
+	} else if (sirfport->hw_flow_ctrl) {
+		if (!(rd_regl(port, SIRFUART_AFC_CTRL) &
+						SIRFUART_CTS_IN_STATUS))
+			goto cts_asserted;
+		else
+			goto cts_deasserted;
+	}
+cts_deasserted:
+	return TIOCM_CAR | TIOCM_DSR;
+cts_asserted:
+	return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
+}
+
+static void sirfsoc_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	unsigned int assert = mctrl & TIOCM_RTS;
+	unsigned int val = assert ? SIRFUART_AFC_CTRL_RX_THD : 0x0;
+	unsigned int current_val;
+	if (sirfport->hw_flow_ctrl) {
+		current_val = rd_regl(port, SIRFUART_AFC_CTRL) & ~0xFF;
+		val |= current_val;
+		wr_regl(port, SIRFUART_AFC_CTRL, val);
+	}
+}
+
+static void sirfsoc_uart_stop_tx(struct uart_port *port)
+{
+	unsigned int regv;
+	regv = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, regv & ~SIRFUART_TX_INT_EN);
+}
+
+void sirfsoc_uart_start_tx(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	unsigned long regv;
+	sirfsoc_uart_pio_tx_chars(sirfport, 1);
+	wr_regl(port, SIRFUART_TX_FIFO_OP, SIRFUART_TX_FIFO_START);
+	regv = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, regv | SIRFUART_TX_INT_EN);
+}
+
+static void sirfsoc_uart_stop_rx(struct uart_port *port)
+{
+	unsigned long regv;
+	wr_regl(port, SIRFUART_RX_FIFO_OP, 0);
+	regv = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, regv & ~SIRFUART_RX_IO_INT_EN);
+}
+
+static void sirfsoc_uart_disable_ms(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	unsigned long reg;
+	sirfport->ms_enabled = 0;
+	if (!sirfport->hw_flow_ctrl)
+		return;
+	reg = rd_regl(port, SIRFUART_AFC_CTRL);
+	wr_regl(port, SIRFUART_AFC_CTRL, reg & ~0x3FF);
+	reg = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, reg & ~SIRFUART_CTS_INT_EN);
+}
+
+static void sirfsoc_uart_enable_ms(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	unsigned long reg;
+	unsigned long flg;
+	if (!sirfport->hw_flow_ctrl)
+		return;
+	flg = SIRFUART_AFC_RX_EN | SIRFUART_AFC_TX_EN;
+	reg = rd_regl(port, SIRFUART_AFC_CTRL);
+	wr_regl(port, SIRFUART_AFC_CTRL, reg | flg);
+	reg = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, reg | SIRFUART_CTS_INT_EN);
+	uart_handle_cts_change(port,
+		!(rd_regl(port, SIRFUART_AFC_CTRL) & SIRFUART_CTS_IN_STATUS));
+	sirfport->ms_enabled = 1;
+}
+
+static void sirfsoc_uart_break_ctl(struct uart_port *port, int break_state)
+{
+	unsigned long ulcon = rd_regl(port, SIRFUART_LINE_CTRL);
+	if (break_state)
+		ulcon |= SIRFUART_SET_BREAK;
+	else
+		ulcon &= ~SIRFUART_SET_BREAK;
+	wr_regl(port, SIRFUART_LINE_CTRL, ulcon);
+}
+
+static unsigned int
+sirfsoc_uart_pio_rx_chars(struct uart_port *port, unsigned int max_rx_count)
+{
+	unsigned int ch, rx_count = 0;
+	struct tty_struct *tty;
+
+	tty = tty_port_tty_get(&port->state->port);
+	if (!tty)
+		return -ENODEV;
+
+	while (!(rd_regl(port, SIRFUART_RX_FIFO_STATUS) &
+					SIRFUART_FIFOEMPTY_MASK(port))) {
+		ch = rd_regl(port, SIRFUART_RX_FIFO_DATA) | SIRFUART_DUMMY_READ;
+		if (unlikely(uart_handle_sysrq_char(port, ch)))
+			continue;
+		uart_insert_char(port, 0, 0, ch, TTY_NORMAL);
+		rx_count++;
+		if (rx_count >= max_rx_count)
+			break;
+	}
+
+	port->icount.rx += rx_count;
+	tty_flip_buffer_push(tty);
+	tty_kref_put(tty);
+
+	return rx_count;
+}
+
+static unsigned int
+sirfsoc_uart_pio_tx_chars(struct sirfsoc_uart_port *sirfport, int count)
+{
+	struct uart_port *port = &sirfport->port;
+	struct circ_buf *xmit = &port->state->xmit;
+	unsigned int num_tx = 0;
+	while (!uart_circ_empty(xmit) &&
+		!(rd_regl(port, SIRFUART_TX_FIFO_STATUS) &
+					SIRFUART_FIFOFULL_MASK(port)) &&
+		count--) {
+		wr_regl(port, SIRFUART_TX_FIFO_DATA, xmit->buf[xmit->tail]);
+		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+		port->icount.tx++;
+		num_tx++;
+	}
+	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+		uart_write_wakeup(port);
+	return num_tx;
+}
+
+static irqreturn_t sirfsoc_uart_isr(int irq, void *dev_id)
+{
+	unsigned long intr_status;
+	unsigned long cts_status;
+	unsigned long flag = TTY_NORMAL;
+	struct sirfsoc_uart_port *sirfport = (struct sirfsoc_uart_port *)dev_id;
+	struct uart_port *port = &sirfport->port;
+	struct uart_state *state = port->state;
+	struct circ_buf *xmit = &port->state->xmit;
+	intr_status = rd_regl(port, SIRFUART_INT_STATUS);
+	wr_regl(port, SIRFUART_INT_STATUS, intr_status);
+	intr_status &= rd_regl(port, SIRFUART_INT_EN);
+	if (unlikely(intr_status & (SIRFUART_ERR_INT_STAT))) {
+		if (intr_status & SIRFUART_RXD_BREAK) {
+			if (uart_handle_break(port))
+				goto recv_char;
+			uart_insert_char(port, intr_status,
+					SIRFUART_RX_OFLOW, 0, TTY_BREAK);
+			return IRQ_HANDLED;
+		}
+		if (intr_status & SIRFUART_RX_OFLOW)
+			port->icount.overrun++;
+		if (intr_status & SIRFUART_FRM_ERR) {
+			port->icount.frame++;
+			flag = TTY_FRAME;
+		}
+		if (intr_status & SIRFUART_PARITY_ERR)
+			flag = TTY_PARITY;
+		wr_regl(port, SIRFUART_RX_FIFO_OP, SIRFUART_RX_FIFO_RESET);
+		wr_regl(port, SIRFUART_RX_FIFO_OP, 0);
+		wr_regl(port, SIRFUART_RX_FIFO_OP, SIRFUART_RX_FIFO_START);
+		intr_status &= port->read_status_mask;
+		uart_insert_char(port, intr_status,
+					SIRFUART_RX_OFLOW_INT, 0, flag);
+	}
+recv_char:
+	if (intr_status & SIRFUART_CTS_INT_EN) {
+		cts_status = !(rd_regl(port, SIRFUART_AFC_CTRL) &
+							SIRFUART_CTS_IN_STATUS);
+		if (cts_status != 0) {
+			uart_handle_cts_change(port, 1);
+		} else {
+			uart_handle_cts_change(port, 0);
+			wake_up_interruptible(&state->port.delta_msr_wait);
+		}
+	}
+	if (intr_status & SIRFUART_RX_IO_INT_EN)
+		sirfsoc_uart_pio_rx_chars(port, SIRFSOC_UART_IO_RX_MAX_CNT);
+	if (intr_status & SIRFUART_TX_INT_EN) {
+		if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+			return IRQ_HANDLED;
+		} else {
+			sirfsoc_uart_pio_tx_chars(sirfport,
+					SIRFSOC_UART_IO_TX_REASONABLE_CNT);
+			if ((uart_circ_empty(xmit)) &&
+				(rd_regl(port, SIRFUART_TX_FIFO_STATUS) &
+						SIRFUART_FIFOEMPTY_MASK(port)))
+				sirfsoc_uart_stop_tx(port);
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+static void sirfsoc_uart_start_rx(struct uart_port *port)
+{
+	unsigned long regv;
+	regv = rd_regl(port, SIRFUART_INT_EN);
+	wr_regl(port, SIRFUART_INT_EN, regv | SIRFUART_RX_IO_INT_EN);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, SIRFUART_RX_FIFO_RESET);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, 0);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, SIRFUART_RX_FIFO_START);
+}
+
+static unsigned int
+sirfsoc_calc_sample_div(unsigned long baud_rate,
+			unsigned long ioclk_rate, unsigned long *setted_baud)
+{
+	unsigned long min_delta = ~0UL;
+	unsigned short sample_div;
+	unsigned int regv = 0;
+	unsigned long ioclk_div;
+	unsigned long baud_tmp;
+	int temp_delta;
+
+	for (sample_div = SIRF_MIN_SAMPLE_DIV;
+			sample_div <= SIRF_MAX_SAMPLE_DIV; sample_div++) {
+		ioclk_div = (ioclk_rate / (baud_rate * (sample_div + 1))) - 1;
+		if (ioclk_div > SIRF_IOCLK_DIV_MAX)
+			continue;
+		baud_tmp = ioclk_rate / ((ioclk_div + 1) * (sample_div + 1));
+		temp_delta = baud_tmp - baud_rate;
+		temp_delta = (temp_delta > 0) ? temp_delta : -temp_delta;
+		if (temp_delta < min_delta) {
+			regv = regv & (~SIRF_IOCLK_DIV_MASK);
+			regv = regv | ioclk_div;
+			regv = regv & (~SIRF_SAMPLE_DIV_MASK);
+			regv = regv | (sample_div << SIRF_SAMPLE_DIV_SHIFT);
+			min_delta = temp_delta;
+			*setted_baud = baud_tmp;
+		}
+	}
+	return regv;
+}
+
+static void sirfsoc_uart_set_termios(struct uart_port *port,
+				       struct ktermios *termios,
+				       struct ktermios *old)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	unsigned long	ioclk_rate;
+	unsigned long	config_reg = 0;
+	unsigned long	baud_rate;
+	unsigned long	setted_baud;
+	unsigned long	flags;
+	unsigned long	ic;
+	unsigned int	clk_div_reg = 0;
+	unsigned long	temp_reg_val;
+	unsigned long	rx_time_out;
+	int		threshold_div;
+	int		temp;
+
+	ioclk_rate = 150000000;
+	switch (termios->c_cflag & CSIZE) {
+	default:
+	case CS8:
+		config_reg |= SIRFUART_DATA_BIT_LEN_8;
+		break;
+	case CS7:
+		config_reg |= SIRFUART_DATA_BIT_LEN_7;
+		break;
+	case CS6:
+		config_reg |= SIRFUART_DATA_BIT_LEN_6;
+		break;
+	case CS5:
+		config_reg |= SIRFUART_DATA_BIT_LEN_5;
+		break;
+	}
+	if (termios->c_cflag & CSTOPB)
+		config_reg |= SIRFUART_STOP_BIT_LEN_2;
+	baud_rate = uart_get_baud_rate(port, termios, old, 0, 4000000);
+	spin_lock_irqsave(&port->lock, flags);
+	port->read_status_mask = SIRFUART_RX_OFLOW_INT;
+	port->ignore_status_mask = 0;
+	/* read flags */
+	if (termios->c_iflag & INPCK)
+		port->read_status_mask |=
+			SIRFUART_FRM_ERR_INT | SIRFUART_PARITY_ERR_INT;
+	if (termios->c_iflag & (BRKINT | PARMRK))
+		port->read_status_mask |= SIRFUART_RXD_BREAK_INT;
+	/* ignore flags */
+	if (termios->c_iflag & IGNPAR)
+		port->ignore_status_mask |=
+			SIRFUART_FRM_ERR_INT | SIRFUART_PARITY_ERR_INT;
+	if ((termios->c_cflag & CREAD) == 0)
+		port->ignore_status_mask |= SIRFUART_DUMMY_READ;
+	/* enable parity if PARENB is set*/
+	if (termios->c_cflag & PARENB) {
+		if (termios->c_cflag & CMSPAR) {
+			if (termios->c_cflag & PARODD)
+				config_reg |= SIRFUART_STICK_BIT_MARK;
+			else
+				config_reg |= SIRFUART_STICK_BIT_SPACE;
+		} else if (termios->c_cflag & PARODD) {
+			config_reg |= SIRFUART_STICK_BIT_ODD;
+		} else {
+			config_reg |= SIRFUART_STICK_BIT_EVEN;
+		}
+	}
+	/* Hardware Flow Control Settings */
+	if (UART_ENABLE_MS(port, termios->c_cflag)) {
+		if (!sirfport->ms_enabled)
+			sirfsoc_uart_enable_ms(port);
+	} else {
+		if (sirfport->ms_enabled)
+			sirfsoc_uart_disable_ms(port);
+	}
+
+	/* common rate: fast calculation */
+	for (ic = 0; ic < SIRF_BAUD_RATE_SUPPORT_NR; ic++)
+		if (baud_rate == baudrate_to_regv[ic].baud_rate)
+			clk_div_reg = baudrate_to_regv[ic].reg_val;
+	setted_baud = baud_rate;
+	/* arbitary rate setting */
+	if (unlikely(clk_div_reg == 0))
+		clk_div_reg = sirfsoc_calc_sample_div(baud_rate, ioclk_rate,
+								&setted_baud);
+	wr_regl(port, SIRFUART_DIVISOR, clk_div_reg);
+
+	if (tty_termios_baud_rate(termios))
+		tty_termios_encode_baud_rate(termios, setted_baud, setted_baud);
+
+	/* set receive timeout */
+	rx_time_out = SIRFSOC_UART_RX_TIMEOUT(baud_rate, 20000);
+	rx_time_out = (rx_time_out > 0xFFFF) ? 0xFFFF : rx_time_out;
+	config_reg |= SIRFUART_RECV_TIMEOUT(rx_time_out);
+	temp_reg_val = rd_regl(port, SIRFUART_TX_FIFO_OP);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, 0);
+	wr_regl(port, SIRFUART_TX_FIFO_OP,
+				temp_reg_val & ~SIRFUART_TX_FIFO_START);
+	wr_regl(port, SIRFUART_TX_DMA_IO_CTRL, SIRFUART_TX_MODE_IO);
+	wr_regl(port, SIRFUART_RX_DMA_IO_CTRL, SIRFUART_RX_MODE_IO);
+	wr_regl(port, SIRFUART_LINE_CTRL, config_reg);
+
+	/* Reset Rx/Tx FIFO Threshold level for proper baudrate */
+	if (baud_rate < 1000000)
+		threshold_div = 1;
+	else
+		threshold_div = 2;
+	temp = port->line == 1 ? 16 : 64;
+	wr_regl(port, SIRFUART_TX_FIFO_CTRL, temp / threshold_div);
+	wr_regl(port, SIRFUART_RX_FIFO_CTRL, temp / threshold_div);
+	temp_reg_val |= SIRFUART_TX_FIFO_START;
+	wr_regl(port, SIRFUART_TX_FIFO_OP, temp_reg_val);
+	uart_update_timeout(port, termios->c_cflag, baud_rate);
+	sirfsoc_uart_start_rx(port);
+	wr_regl(port, SIRFUART_TX_RX_EN, SIRFUART_TX_EN | SIRFUART_RX_EN);
+	spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void startup_uart_controller(struct uart_port *port)
+{
+	unsigned long temp_regv;
+	int temp;
+	temp_regv = rd_regl(port, SIRFUART_TX_DMA_IO_CTRL);
+	wr_regl(port, SIRFUART_TX_DMA_IO_CTRL, temp_regv | SIRFUART_TX_MODE_IO);
+	temp_regv = rd_regl(port, SIRFUART_RX_DMA_IO_CTRL);
+	wr_regl(port, SIRFUART_RX_DMA_IO_CTRL, temp_regv | SIRFUART_RX_MODE_IO);
+	wr_regl(port, SIRFUART_TX_DMA_IO_LEN, 0);
+	wr_regl(port, SIRFUART_RX_DMA_IO_LEN, 0);
+	wr_regl(port, SIRFUART_TX_RX_EN, SIRFUART_RX_EN | SIRFUART_TX_EN);
+	wr_regl(port, SIRFUART_TX_FIFO_OP, SIRFUART_TX_FIFO_RESET);
+	wr_regl(port, SIRFUART_TX_FIFO_OP, 0);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, SIRFUART_RX_FIFO_RESET);
+	wr_regl(port, SIRFUART_RX_FIFO_OP, 0);
+	temp = port->line == 1 ? 16 : 64;
+	wr_regl(port, SIRFUART_TX_FIFO_CTRL, temp);
+	wr_regl(port, SIRFUART_RX_FIFO_CTRL, temp);
+}
+
+static int sirfsoc_uart_startup(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport	= to_sirfport(port);
+	unsigned int index			= port->line;
+	int ret;
+	set_irq_flags(port->irq, IRQF_VALID | IRQF_NOAUTOEN);
+	ret = request_irq(port->irq,
+				sirfsoc_uart_isr,
+				0,
+				SIRFUART_PORT_NAME,
+				sirfport);
+	if (ret != 0) {
+		dev_err(port->dev, "UART%d request IRQ line (%d) failed.\n",
+							index, port->irq);
+		goto irq_err;
+	}
+	startup_uart_controller(port);
+	enable_irq(port->irq);
+irq_err:
+	return ret;
+}
+
+static void sirfsoc_uart_shutdown(struct uart_port *port)
+{
+	struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+	wr_regl(port, SIRFUART_INT_EN, 0);
+	free_irq(port->irq, sirfport);
+	if (sirfport->ms_enabled) {
+		sirfsoc_uart_disable_ms(port);
+		sirfport->ms_enabled = 0;
+	}
+}
+
+static const char *sirfsoc_uart_type(struct uart_port *port)
+{
+	return port->type == SIRFSOC_PORT_TYPE ? SIRFUART_PORT_NAME : NULL;
+}
+
+static int sirfsoc_uart_request_port(struct uart_port *port)
+{
+	void *ret;
+	ret = request_mem_region(port->mapbase,
+				SIRFUART_MAP_SIZE, SIRFUART_PORT_NAME);
+	return ret ? 0 : -EBUSY;
+}
+
+static void sirfsoc_uart_release_port(struct uart_port *port)
+{
+	release_mem_region(port->mapbase, SIRFUART_MAP_SIZE);
+}
+
+static void sirfsoc_uart_config_port(struct uart_port *port, int flags)
+{
+	if (flags & UART_CONFIG_TYPE) {
+		port->type = SIRFSOC_PORT_TYPE;
+		sirfsoc_uart_request_port(port);
+	}
+}
+
+static struct uart_ops sirfsoc_uart_ops = {
+	.tx_empty	= sirfsoc_uart_tx_empty,
+	.get_mctrl	= sirfsoc_uart_get_mctrl,
+	.set_mctrl	= sirfsoc_uart_set_mctrl,
+	.stop_tx	= sirfsoc_uart_stop_tx,
+	.start_tx	= sirfsoc_uart_start_tx,
+	.stop_rx	= sirfsoc_uart_stop_rx,
+	.enable_ms	= sirfsoc_uart_enable_ms,
+	.break_ctl	= sirfsoc_uart_break_ctl,
+	.startup	= sirfsoc_uart_startup,
+	.shutdown	= sirfsoc_uart_shutdown,
+	.set_termios	= sirfsoc_uart_set_termios,
+	.type		= sirfsoc_uart_type,
+	.release_port	= sirfsoc_uart_release_port,
+	.request_port	= sirfsoc_uart_request_port,
+	.config_port	= sirfsoc_uart_config_port,
+};
+
+#ifdef CONFIG_SERIAL_SIRFSOC_CONSOLE
+static int __init sirfsoc_uart_console_setup(struct console *co, char *options)
+{
+	unsigned int baud = 115200;
+	unsigned int bits = 8;
+	unsigned int parity = 'n';
+	unsigned int flow = 'n';
+	struct uart_port *port = &sirfsoc_uart_ports[co->index].port;
+
+	if (co->index < 0 || co->index >= SIRFSOC_UART_NR)
+		return -EINVAL;
+
+	if (!port->mapbase)
+		return -ENODEV;
+
+	if (options)
+		uart_parse_options(options, &baud, &parity, &bits, &flow);
+	port->cons = co;
+	return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static void sirfsoc_uart_console_putchar(struct uart_port *port, int ch)
+{
+	while (rd_regl(port,
+		SIRFUART_TX_FIFO_STATUS) & SIRFUART_FIFOFULL_MASK(port))
+		cpu_relax();
+	wr_regb(port, SIRFUART_TX_FIFO_DATA, ch);
+}
+
+static void sirfsoc_uart_console_write(struct console *co, const char *s,
+							unsigned int count)
+{
+	struct uart_port *port = &sirfsoc_uart_ports[co->index].port;
+	uart_console_write(port, s, count, sirfsoc_uart_console_putchar);
+}
+
+static struct console sirfsoc_uart_console = {
+	.name		= SIRFSOC_UART_NAME,
+	.device		= uart_console_device,
+	.flags		= CON_PRINTBUFFER,
+	.index		= -1,
+	.write		= sirfsoc_uart_console_write,
+	.setup		= sirfsoc_uart_console_setup,
+	.data           = &sirfsoc_uart_drv,
+};
+
+static int __init sirfsoc_uart_console_init(void)
+{
+	register_console(&sirfsoc_uart_console);
+	return 0;
+}
+console_initcall(sirfsoc_uart_console_init);
+#endif
+
+static struct uart_driver sirfsoc_uart_drv = {
+	.owner		= THIS_MODULE,
+	.driver_name	= SIRFUART_PORT_NAME,
+	.nr		= SIRFSOC_UART_NR,
+	.dev_name	= SIRFSOC_UART_NAME,
+	.major		= SIRFSOC_UART_MAJOR,
+	.minor		= SIRFSOC_UART_MINOR,
+#ifdef CONFIG_SERIAL_SIRFSOC_CONSOLE
+	.cons			= &sirfsoc_uart_console,
+#else
+	.cons			= NULL,
+#endif
+};
+
+int sirfsoc_uart_probe(struct platform_device *pdev)
+{
+	struct sirfsoc_uart_port *sirfport;
+	struct uart_port *port;
+	struct resource *res;
+	int ret;
+
+	if (of_property_read_u32(pdev->dev.of_node, "cell-index", &pdev->id)) {
+		dev_err(&pdev->dev,
+			"Unable to find cell-index in uart node.\n");
+		ret = -EFAULT;
+		goto err;
+	}
+
+	sirfport = &sirfsoc_uart_ports[pdev->id];
+	port = &sirfport->port;
+	port->dev = &pdev->dev;
+	port->private_data = sirfport;
+
+	if (of_find_property(pdev->dev.of_node, "hw_flow_ctrl", NULL))
+		sirfport->hw_flow_ctrl = 1;
+
+	if (of_property_read_u32(pdev->dev.of_node,
+			"fifosize",
+			&port->fifosize)) {
+		dev_err(&pdev->dev,
+			"Unable to find fifosize in uart node.\n");
+		ret = -EFAULT;
+		goto err;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(&pdev->dev, "Insufficient resources.\n");
+		ret = -EFAULT;
+		goto err;
+	}
+	port->mapbase = res->start;
+	port->membase = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (!port->membase) {
+		dev_err(&pdev->dev, "Cannot remap resource.\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (res == NULL) {
+		dev_err(&pdev->dev, "Insufficient resources.\n");
+		ret = -EFAULT;
+		goto irq_err;
+	}
+	port->irq = res->start;
+
+	if (sirfport->hw_flow_ctrl) {
+		sirfport->pmx = pinmux_get(&pdev->dev, NULL);
+		ret = IS_ERR(sirfport->pmx);
+		if (ret)
+			goto pmx_err;
+
+		pinmux_enable(sirfport->pmx);
+	}
+
+	port->ops = &sirfsoc_uart_ops;
+	spin_lock_init(&port->lock);
+
+	platform_set_drvdata(pdev, sirfport);
+	ret = uart_add_one_port(&sirfsoc_uart_drv, port);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Cannot add UART port(%d).\n", pdev->id);
+		goto port_err;
+	}
+
+	return 0;
+
+port_err:
+	platform_set_drvdata(pdev, NULL);
+	if (sirfport->hw_flow_ctrl) {
+		pinmux_disable(sirfport->pmx);
+		pinmux_put(sirfport->pmx);
+	}
+pmx_err:
+irq_err:
+	devm_iounmap(&pdev->dev, port->membase);
+err:
+	return ret;
+}
+
+static int sirfsoc_uart_remove(struct platform_device *pdev)
+{
+	struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
+	struct uart_port *port = &sirfport->port;
+	platform_set_drvdata(pdev, NULL);
+	if (sirfport->hw_flow_ctrl) {
+		pinmux_disable(sirfport->pmx);
+		pinmux_put(sirfport->pmx);
+	}
+	devm_iounmap(&pdev->dev, port->membase);
+	uart_remove_one_port(&sirfsoc_uart_drv, port);
+	return 0;
+}
+
+static int
+sirfsoc_uart_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
+	struct uart_port *port = &sirfport->port;
+	uart_suspend_port(&sirfsoc_uart_drv, port);
+	return 0;
+}
+
+static int sirfsoc_uart_resume(struct platform_device *pdev)
+{
+	struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
+	struct uart_port *port = &sirfport->port;
+	uart_resume_port(&sirfsoc_uart_drv, port);
+	return 0;
+}
+
+static struct of_device_id sirfsoc_uart_ids[] __devinitdata = {
+	{ .compatible = "sirf,prima2-uart", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sirfsoc_serial_of_match);
+
+static struct platform_driver sirfsoc_uart_driver = {
+	.probe		= sirfsoc_uart_probe,
+	.remove		= __devexit_p(sirfsoc_uart_remove),
+	.suspend	= sirfsoc_uart_suspend,
+	.resume		= sirfsoc_uart_resume,
+	.driver		= {
+		.name	= SIRFUART_PORT_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = sirfsoc_uart_ids,
+	},
+};
+
+static int __init sirfsoc_uart_init(void)
+{
+	int ret = 0;
+
+	ret = uart_register_driver(&sirfsoc_uart_drv);
+	if (ret)
+		goto out;
+
+	ret = platform_driver_register(&sirfsoc_uart_driver);
+	if (ret)
+		uart_unregister_driver(&sirfsoc_uart_drv);
+out:
+	return ret;
+}
+module_init(sirfsoc_uart_init);
+
+static void __exit sirfsoc_uart_exit(void)
+{
+	platform_driver_unregister(&sirfsoc_uart_driver);
+	uart_unregister_driver(&sirfsoc_uart_drv);
+}
+module_exit(sirfsoc_uart_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bin Shi <Bin.Shi@csr.com>, Rong Wang<Rong.Wang@csr.com>");
+MODULE_DESCRIPTION("CSR SiRFprimaII Uart Driver");
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
new file mode 100644
index 000000000000..fc64260fa93c
--- /dev/null
+++ b/drivers/tty/serial/sirfsoc_uart.h
@@ -0,0 +1,185 @@
+/*
+ * Drivers for CSR SiRFprimaII onboard UARTs.
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+#include <linux/bitops.h>
+
+/* UART Register Offset Define */
+#define SIRFUART_LINE_CTRL			0x0040
+#define SIRFUART_TX_RX_EN			0x004c
+#define SIRFUART_DIVISOR			0x0050
+#define SIRFUART_INT_EN				0x0054
+#define SIRFUART_INT_STATUS			0x0058
+#define SIRFUART_TX_DMA_IO_CTRL			0x0100
+#define SIRFUART_TX_DMA_IO_LEN			0x0104
+#define SIRFUART_TX_FIFO_CTRL			0x0108
+#define SIRFUART_TX_FIFO_LEVEL_CHK		0x010C
+#define SIRFUART_TX_FIFO_OP			0x0110
+#define SIRFUART_TX_FIFO_STATUS			0x0114
+#define SIRFUART_TX_FIFO_DATA			0x0118
+#define SIRFUART_RX_DMA_IO_CTRL			0x0120
+#define SIRFUART_RX_DMA_IO_LEN			0x0124
+#define SIRFUART_RX_FIFO_CTRL			0x0128
+#define SIRFUART_RX_FIFO_LEVEL_CHK		0x012C
+#define SIRFUART_RX_FIFO_OP			0x0130
+#define SIRFUART_RX_FIFO_STATUS			0x0134
+#define SIRFUART_RX_FIFO_DATA			0x0138
+#define SIRFUART_AFC_CTRL			0x0140
+#define SIRFUART_SWH_DMA_IO			0x0148
+
+/* UART Line Control Register */
+#define SIRFUART_DATA_BIT_LEN_MASK		0x3
+#define SIRFUART_DATA_BIT_LEN_5			BIT(0)
+#define SIRFUART_DATA_BIT_LEN_6			1
+#define SIRFUART_DATA_BIT_LEN_7			2
+#define SIRFUART_DATA_BIT_LEN_8			3
+#define SIRFUART_STOP_BIT_LEN_1			0
+#define SIRFUART_STOP_BIT_LEN_2			BIT(2)
+#define SIRFUART_PARITY_EN			BIT(3)
+#define SIRFUART_EVEN_BIT			BIT(4)
+#define SIRFUART_STICK_BIT_MASK			(7 << 3)
+#define SIRFUART_STICK_BIT_NONE			(0 << 3)
+#define SIRFUART_STICK_BIT_EVEN			BIT(3)
+#define SIRFUART_STICK_BIT_ODD			(3 << 3)
+#define SIRFUART_STICK_BIT_MARK			(5 << 3)
+#define SIRFUART_STICK_BIT_SPACE		(7 << 3)
+#define SIRFUART_SET_BREAK			BIT(6)
+#define SIRFUART_LOOP_BACK			BIT(7)
+#define SIRFUART_PARITY_MASK			(7 << 3)
+#define SIRFUART_DUMMY_READ			BIT(16)
+
+#define SIRFSOC_UART_RX_TIMEOUT(br, to)	(((br) * (((to) + 999) / 1000)) / 1000)
+#define SIRFUART_RECV_TIMEOUT_MASK	(0xFFFF << 16)
+#define SIRFUART_RECV_TIMEOUT(x)	(((x) & 0xFFFF) << 16)
+
+/* UART Auto Flow Control */
+#define SIRFUART_AFC_RX_THD_MASK		0x000000FF
+#define SIRFUART_AFC_RX_EN			BIT(8)
+#define SIRFUART_AFC_TX_EN			BIT(9)
+#define SIRFUART_CTS_CTRL			BIT(10)
+#define SIRFUART_RTS_CTRL			BIT(11)
+#define SIRFUART_CTS_IN_STATUS			BIT(12)
+#define SIRFUART_RTS_OUT_STATUS			BIT(13)
+
+/* UART Interrupt Enable Register */
+#define SIRFUART_RX_DONE_INT			BIT(0)
+#define SIRFUART_TX_DONE_INT			BIT(1)
+#define SIRFUART_RX_OFLOW_INT			BIT(2)
+#define SIRFUART_TX_ALLOUT_INT			BIT(3)
+#define SIRFUART_RX_IO_DMA_INT			BIT(4)
+#define SIRFUART_TX_IO_DMA_INT			BIT(5)
+#define SIRFUART_RXFIFO_FULL_INT		BIT(6)
+#define SIRFUART_TXFIFO_EMPTY_INT		BIT(7)
+#define SIRFUART_RXFIFO_THD_INT			BIT(8)
+#define SIRFUART_TXFIFO_THD_INT			BIT(9)
+#define SIRFUART_FRM_ERR_INT			BIT(10)
+#define SIRFUART_RXD_BREAK_INT			BIT(11)
+#define SIRFUART_RX_TIMEOUT_INT			BIT(12)
+#define SIRFUART_PARITY_ERR_INT			BIT(13)
+#define SIRFUART_CTS_INT_EN			BIT(14)
+#define SIRFUART_RTS_INT_EN			BIT(15)
+
+/* UART Interrupt Status Register */
+#define SIRFUART_RX_DONE			BIT(0)
+#define SIRFUART_TX_DONE			BIT(1)
+#define SIRFUART_RX_OFLOW			BIT(2)
+#define SIRFUART_TX_ALL_EMPTY			BIT(3)
+#define SIRFUART_DMA_IO_RX_DONE			BIT(4)
+#define SIRFUART_DMA_IO_TX_DONE			BIT(5)
+#define SIRFUART_RXFIFO_FULL			BIT(6)
+#define SIRFUART_TXFIFO_EMPTY			BIT(7)
+#define SIRFUART_RXFIFO_THD_REACH		BIT(8)
+#define SIRFUART_TXFIFO_THD_REACH		BIT(9)
+#define SIRFUART_FRM_ERR			BIT(10)
+#define SIRFUART_RXD_BREAK			BIT(11)
+#define SIRFUART_RX_TIMEOUT			BIT(12)
+#define SIRFUART_PARITY_ERR			BIT(13)
+#define SIRFUART_CTS_CHANGE			BIT(14)
+#define SIRFUART_RTS_CHANGE			BIT(15)
+#define SIRFUART_PLUG_IN			BIT(16)
+
+#define SIRFUART_ERR_INT_STAT					\
+				(SIRFUART_RX_OFLOW |		\
+				SIRFUART_FRM_ERR |		\
+				SIRFUART_RXD_BREAK |		\
+				SIRFUART_PARITY_ERR)
+#define SIRFUART_ERR_INT_EN					\
+				(SIRFUART_RX_OFLOW_INT |	\
+				SIRFUART_FRM_ERR_INT |		\
+				SIRFUART_RXD_BREAK_INT |	\
+				SIRFUART_PARITY_ERR_INT)
+#define SIRFUART_TX_INT_EN	SIRFUART_TXFIFO_EMPTY_INT
+#define SIRFUART_RX_IO_INT_EN					\
+				(SIRFUART_RX_TIMEOUT_INT |	\
+				SIRFUART_RXFIFO_THD_INT |	\
+				SIRFUART_RXFIFO_FULL_INT |	\
+				SIRFUART_ERR_INT_EN)
+
+/* UART FIFO Register */
+#define SIRFUART_TX_FIFO_STOP			0x0
+#define SIRFUART_TX_FIFO_RESET			0x1
+#define SIRFUART_TX_FIFO_START			0x2
+#define SIRFUART_RX_FIFO_STOP			0x0
+#define SIRFUART_RX_FIFO_RESET			0x1
+#define SIRFUART_RX_FIFO_START			0x2
+#define SIRFUART_TX_MODE_DMA			0
+#define SIRFUART_TX_MODE_IO			1
+#define SIRFUART_RX_MODE_DMA			0
+#define SIRFUART_RX_MODE_IO			1
+
+#define SIRFUART_RX_EN				0x1
+#define SIRFUART_TX_EN				0x2
+
+/* Generic Definitions */
+#define SIRFSOC_UART_NAME			"ttySiRF"
+#define SIRFSOC_UART_MAJOR			0
+#define SIRFSOC_UART_MINOR			0
+#define SIRFUART_PORT_NAME			"sirfsoc-uart"
+#define SIRFUART_MAP_SIZE			0x200
+#define SIRFSOC_UART_NR				3
+#define SIRFSOC_PORT_TYPE			0xa5
+
+/* Baud Rate Calculation */
+#define SIRF_MIN_SAMPLE_DIV			0xf
+#define SIRF_MAX_SAMPLE_DIV			0x3f
+#define SIRF_IOCLK_DIV_MAX			0xffff
+#define SIRF_SAMPLE_DIV_SHIFT			16
+#define SIRF_IOCLK_DIV_MASK			0xffff
+#define SIRF_SAMPLE_DIV_MASK			0x3f0000
+#define SIRF_BAUD_RATE_SUPPORT_NR		18
+
+/* For Fast Baud Rate Calculation */
+struct sirfsoc_baudrate_to_regv {
+	unsigned int baud_rate;
+	unsigned int reg_val;
+};
+
+struct sirfsoc_uart_port {
+	unsigned char			hw_flow_ctrl;
+	unsigned char			ms_enabled;
+
+	struct uart_port		port;
+	struct pinmux			*pmx;
+};
+
+/* Hardware Flow Control */
+#define SIRFUART_AFC_CTRL_RX_THD	0x70
+
+/* Register Access Control */
+#define portaddr(port, reg)		((port)->membase + (reg))
+#define rd_regb(port, reg)		(__raw_readb(portaddr(port, reg)))
+#define rd_regl(port, reg)		(__raw_readl(portaddr(port, reg)))
+#define wr_regb(port, reg, val)		__raw_writeb(val, portaddr(port, reg))
+#define wr_regl(port, reg, val)		__raw_writel(val, portaddr(port, reg))
+
+/* UART Port Mask */
+#define SIRFUART_FIFOLEVEL_MASK(port)	((port->line == 1) ? (0x1f) : (0x7f))
+#define SIRFUART_FIFOFULL_MASK(port)	((port->line == 1) ? (0x20) : (0x80))
+#define SIRFUART_FIFOEMPTY_MASK(port)	((port->line == 1) ? (0x40) : (0x100))
+
+/* I/O Mode */
+#define SIRFSOC_UART_IO_RX_MAX_CNT		256
+#define SIRFSOC_UART_IO_TX_REASONABLE_CNT	6
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index e76c8b747fb8..70f97491d8f2 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -513,20 +513,7 @@ static struct platform_driver timbuart_platform_driver = {
 	.remove		= __devexit_p(timbuart_remove),
 };
 
-/*--------------------------------------------------------------------------*/
-
-static int __init timbuart_init(void)
-{
-	return platform_driver_register(&timbuart_platform_driver);
-}
-
-static void __exit timbuart_exit(void)
-{
-	platform_driver_unregister(&timbuart_platform_driver);
-}
-
-module_init(timbuart_init);
-module_exit(timbuart_exit);
+module_platform_driver(timbuart_platform_driver);
 
 MODULE_DESCRIPTION("Timberdale UART driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c
index 3beb6ab4fa68..83148e79ca13 100644
--- a/drivers/tty/serial/vr41xx_siu.c
+++ b/drivers/tty/serial/vr41xx_siu.c
@@ -961,18 +961,7 @@ static struct platform_driver siu_device_driver = {
 	},
 };
 
-static int __init vr41xx_siu_init(void)
-{
-	return platform_driver_register(&siu_device_driver);
-}
-
-static void __exit vr41xx_siu_exit(void)
-{
-	platform_driver_unregister(&siu_device_driver);
-}
-
-module_init(vr41xx_siu_init);
-module_exit(vr41xx_siu_exit);
+module_platform_driver(siu_device_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:SIU");
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index e67fb20490d2..ff8017f87914 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -850,7 +850,7 @@ static int mgsl_device_count;
  * .text section address and breakpoint on module load.
  * This is useful for use with gdb and add-symbol-file command.
  */
-static int break_on_load;
+static bool break_on_load;
 
 /*
  * Driver major number, defaults to zero to get auto
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index 0f6b796c95c5..a7efe538df00 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -456,7 +456,7 @@ static int synclinkmp_device_count = 0;
  * .text section address and breakpoint on module load.
  * This is useful for use with gdb and add-symbol-file command.
  */
-static int break_on_load = 0;
+static bool break_on_load = 0;
 
 /*
  * Driver major number, defaults to zero to get auto
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 3fdebd306b94..e41b9bbc107d 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -790,19 +790,24 @@ static void session_clear_tty(struct pid *session)
 void disassociate_ctty(int on_exit)
 {
 	struct tty_struct *tty;
-	struct pid *tty_pgrp = NULL;
 
 	if (!current->signal->leader)
 		return;
 
 	tty = get_current_tty();
 	if (tty) {
-		tty_pgrp = get_pid(tty->pgrp);
+		struct pid *tty_pgrp = get_pid(tty->pgrp);
 		if (on_exit) {
 			if (tty->driver->type != TTY_DRIVER_TYPE_PTY)
 				tty_vhangup(tty);
 		}
 		tty_kref_put(tty);
+		if (tty_pgrp) {
+			kill_pgrp(tty_pgrp, SIGHUP, on_exit);
+			if (!on_exit)
+				kill_pgrp(tty_pgrp, SIGCONT, on_exit);
+			put_pid(tty_pgrp);
+		}
 	} else if (on_exit) {
 		struct pid *old_pgrp;
 		spin_lock_irq(&current->sighand->siglock);
@@ -816,12 +821,6 @@ void disassociate_ctty(int on_exit)
 		}
 		return;
 	}
-	if (tty_pgrp) {
-		kill_pgrp(tty_pgrp, SIGHUP, on_exit);
-		if (!on_exit)
-			kill_pgrp(tty_pgrp, SIGCONT, on_exit);
-		put_pid(tty_pgrp);
-	}
 
 	spin_lock_irq(&current->sighand->siglock);
 	put_pid(current->signal->tty_old_pgrp);
@@ -1558,6 +1557,59 @@ static void release_tty(struct tty_struct *tty, int idx)
 }
 
 /**
+ *	tty_release_checks - check a tty before real release
+ *	@tty: tty to check
+ *	@o_tty: link of @tty (if any)
+ *	@idx: index of the tty
+ *
+ *	Performs some paranoid checking before true release of the @tty.
+ *	This is a no-op unless TTY_PARANOIA_CHECK is defined.
+ */
+static int tty_release_checks(struct tty_struct *tty, struct tty_struct *o_tty,
+		int idx)
+{
+#ifdef TTY_PARANOIA_CHECK
+	if (idx < 0 || idx >= tty->driver->num) {
+		printk(KERN_DEBUG "%s: bad idx when trying to free (%s)\n",
+				__func__, tty->name);
+		return -1;
+	}
+
+	/* not much to check for devpts */
+	if (tty->driver->flags & TTY_DRIVER_DEVPTS_MEM)
+		return 0;
+
+	if (tty != tty->driver->ttys[idx]) {
+		printk(KERN_DEBUG "%s: driver.table[%d] not tty for (%s)\n",
+				__func__, idx, tty->name);
+		return -1;
+	}
+	if (tty->termios != tty->driver->termios[idx]) {
+		printk(KERN_DEBUG "%s: driver.termios[%d] not termios for (%s)\n",
+				__func__, idx, tty->name);
+		return -1;
+	}
+	if (tty->driver->other) {
+		if (o_tty != tty->driver->other->ttys[idx]) {
+			printk(KERN_DEBUG "%s: other->table[%d] not o_tty for (%s)\n",
+					__func__, idx, tty->name);
+			return -1;
+		}
+		if (o_tty->termios != tty->driver->other->termios[idx]) {
+			printk(KERN_DEBUG "%s: other->termios[%d] not o_termios for (%s)\n",
+					__func__, idx, tty->name);
+			return -1;
+		}
+		if (o_tty->link != tty) {
+			printk(KERN_DEBUG "%s: bad pty pointers\n", __func__);
+			return -1;
+		}
+	}
+#endif
+	return 0;
+}
+
+/**
  *	tty_release		-	vfs callback for close
  *	@inode: inode of tty
  *	@filp: file pointer for handle to tty
@@ -1585,11 +1637,11 @@ int tty_release(struct inode *inode, struct file *filp)
 	int	idx;
 	char	buf[64];
 
-	if (tty_paranoia_check(tty, inode, "tty_release_dev"))
+	if (tty_paranoia_check(tty, inode, __func__))
 		return 0;
 
 	tty_lock();
-	check_tty_count(tty, "tty_release_dev");
+	check_tty_count(tty, __func__);
 
 	__tty_fasync(-1, filp, 0);
 
@@ -1599,59 +1651,16 @@ int tty_release(struct inode *inode, struct file *filp)
 	devpts = (tty->driver->flags & TTY_DRIVER_DEVPTS_MEM) != 0;
 	o_tty = tty->link;
 
-#ifdef TTY_PARANOIA_CHECK
-	if (idx < 0 || idx >= tty->driver->num) {
-		printk(KERN_DEBUG "tty_release_dev: bad idx when trying to "
-				  "free (%s)\n", tty->name);
+	if (tty_release_checks(tty, o_tty, idx)) {
 		tty_unlock();
 		return 0;
 	}
-	if (!devpts) {
-		if (tty != tty->driver->ttys[idx]) {
-			tty_unlock();
-			printk(KERN_DEBUG "tty_release_dev: driver.table[%d] not tty "
-			       "for (%s)\n", idx, tty->name);
-			return 0;
-		}
-		if (tty->termios != tty->driver->termios[idx]) {
-			tty_unlock();
-			printk(KERN_DEBUG "tty_release_dev: driver.termios[%d] not termios "
-			       "for (%s)\n",
-			       idx, tty->name);
-			return 0;
-		}
-	}
-#endif
 
 #ifdef TTY_DEBUG_HANGUP
-	printk(KERN_DEBUG "tty_release_dev of %s (tty count=%d)...",
-	       tty_name(tty, buf), tty->count);
+	printk(KERN_DEBUG "%s: %s (tty count=%d)...\n", __func__,
+			tty_name(tty, buf), tty->count);
 #endif
 
-#ifdef TTY_PARANOIA_CHECK
-	if (tty->driver->other &&
-	     !(tty->driver->flags & TTY_DRIVER_DEVPTS_MEM)) {
-		if (o_tty != tty->driver->other->ttys[idx]) {
-			tty_unlock();
-			printk(KERN_DEBUG "tty_release_dev: other->table[%d] "
-					  "not o_tty for (%s)\n",
-			       idx, tty->name);
-			return 0 ;
-		}
-		if (o_tty->termios != tty->driver->other->termios[idx]) {
-			tty_unlock();
-			printk(KERN_DEBUG "tty_release_dev: other->termios[%d] "
-					  "not o_termios for (%s)\n",
-			       idx, tty->name);
-			return 0;
-		}
-		if (o_tty->link != tty) {
-			tty_unlock();
-			printk(KERN_DEBUG "tty_release_dev: bad pty pointers\n");
-			return 0;
-		}
-	}
-#endif
 	if (tty->ops->close)
 		tty->ops->close(tty, filp);
 
@@ -1707,8 +1716,8 @@ int tty_release(struct inode *inode, struct file *filp)
 		if (!do_sleep)
 			break;
 
-		printk(KERN_WARNING "tty_release_dev: %s: read/write wait queue "
-				    "active!\n", tty_name(tty, buf));
+		printk(KERN_WARNING "%s: %s: read/write wait queue active!\n",
+				__func__, tty_name(tty, buf));
 		tty_unlock();
 		mutex_unlock(&tty_mutex);
 		schedule();
@@ -1721,15 +1730,14 @@ int tty_release(struct inode *inode, struct file *filp)
 	 */
 	if (pty_master) {
 		if (--o_tty->count < 0) {
-			printk(KERN_WARNING "tty_release_dev: bad pty slave count "
-					    "(%d) for %s\n",
-			       o_tty->count, tty_name(o_tty, buf));
+			printk(KERN_WARNING "%s: bad pty slave count (%d) for %s\n",
+				__func__, o_tty->count, tty_name(o_tty, buf));
 			o_tty->count = 0;
 		}
 	}
 	if (--tty->count < 0) {
-		printk(KERN_WARNING "tty_release_dev: bad tty->count (%d) for %s\n",
-		       tty->count, tty_name(tty, buf));
+		printk(KERN_WARNING "%s: bad tty->count (%d) for %s\n",
+				__func__, tty->count, tty_name(tty, buf));
 		tty->count = 0;
 	}
 
@@ -1778,7 +1786,7 @@ int tty_release(struct inode *inode, struct file *filp)
 	}
 
 #ifdef TTY_DEBUG_HANGUP
-	printk(KERN_DEBUG "freeing tty structure...");
+	printk(KERN_DEBUG "%s: freeing tty structure...\n", __func__);
 #endif
 	/*
 	 * Ask the line discipline code to release its structures
@@ -1798,6 +1806,83 @@ int tty_release(struct inode *inode, struct file *filp)
 }
 
 /**
+ *	tty_open_current_tty - get tty of current task for open
+ *	@device: device number
+ *	@filp: file pointer to tty
+ *	@return: tty of the current task iff @device is /dev/tty
+ *
+ *	We cannot return driver and index like for the other nodes because
+ *	devpts will not work then. It expects inodes to be from devpts FS.
+ */
+static struct tty_struct *tty_open_current_tty(dev_t device, struct file *filp)
+{
+	struct tty_struct *tty;
+
+	if (device != MKDEV(TTYAUX_MAJOR, 0))
+		return NULL;
+
+	tty = get_current_tty();
+	if (!tty)
+		return ERR_PTR(-ENXIO);
+
+	filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */
+	/* noctty = 1; */
+	tty_kref_put(tty);
+	/* FIXME: we put a reference and return a TTY! */
+	return tty;
+}
+
+/**
+ *	tty_lookup_driver - lookup a tty driver for a given device file
+ *	@device: device number
+ *	@filp: file pointer to tty
+ *	@noctty: set if the device should not become a controlling tty
+ *	@index: index for the device in the @return driver
+ *	@return: driver for this inode (with increased refcount)
+ *
+ * 	If @return is not erroneous, the caller is responsible to decrement the
+ * 	refcount by tty_driver_kref_put.
+ *
+ *	Locking: tty_mutex protects get_tty_driver
+ */
+static struct tty_driver *tty_lookup_driver(dev_t device, struct file *filp,
+		int *noctty, int *index)
+{
+	struct tty_driver *driver;
+
+	switch (device) {
+#ifdef CONFIG_VT
+	case MKDEV(TTY_MAJOR, 0): {
+		extern struct tty_driver *console_driver;
+		driver = tty_driver_kref_get(console_driver);
+		*index = fg_console;
+		*noctty = 1;
+		break;
+	}
+#endif
+	case MKDEV(TTYAUX_MAJOR, 1): {
+		struct tty_driver *console_driver = console_device(index);
+		if (console_driver) {
+			driver = tty_driver_kref_get(console_driver);
+			if (driver) {
+				/* Don't let /dev/console block */
+				filp->f_flags |= O_NONBLOCK;
+				*noctty = 1;
+				break;
+			}
+		}
+		return ERR_PTR(-ENODEV);
+	}
+	default:
+		driver = get_tty_driver(device, index);
+		if (!driver)
+			return ERR_PTR(-ENODEV);
+		break;
+	}
+	return driver;
+}
+
+/**
  *	tty_open		-	open a tty device
  *	@inode: inode of device file
  *	@filp: file pointer to tty
@@ -1813,16 +1898,16 @@ int tty_release(struct inode *inode, struct file *filp)
  *	The termios state of a pty is reset on first open so that
  *	settings don't persist across reuse.
  *
- *	Locking: tty_mutex protects tty, get_tty_driver and tty_init_dev work.
+ *	Locking: tty_mutex protects tty, tty_lookup_driver and tty_init_dev.
  *		 tty->count should protect the rest.
  *		 ->siglock protects ->signal/->sighand
  */
 
 static int tty_open(struct inode *inode, struct file *filp)
 {
-	struct tty_struct *tty = NULL;
+	struct tty_struct *tty;
 	int noctty, retval;
-	struct tty_driver *driver;
+	struct tty_driver *driver = NULL;
 	int index;
 	dev_t device = inode->i_rdev;
 	unsigned saved_flags = filp->f_flags;
@@ -1841,66 +1926,22 @@ retry_open:
 	mutex_lock(&tty_mutex);
 	tty_lock();
 
-	if (device == MKDEV(TTYAUX_MAJOR, 0)) {
-		tty = get_current_tty();
-		if (!tty) {
-			tty_unlock();
-			mutex_unlock(&tty_mutex);
-			tty_free_file(filp);
-			return -ENXIO;
-		}
-		driver = tty_driver_kref_get(tty->driver);
-		index = tty->index;
-		filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */
-		/* noctty = 1; */
-		/* FIXME: Should we take a driver reference ? */
-		tty_kref_put(tty);
-		goto got_driver;
-	}
-#ifdef CONFIG_VT
-	if (device == MKDEV(TTY_MAJOR, 0)) {
-		extern struct tty_driver *console_driver;
-		driver = tty_driver_kref_get(console_driver);
-		index = fg_console;
-		noctty = 1;
-		goto got_driver;
-	}
-#endif
-	if (device == MKDEV(TTYAUX_MAJOR, 1)) {
-		struct tty_driver *console_driver = console_device(&index);
-		if (console_driver) {
-			driver = tty_driver_kref_get(console_driver);
-			if (driver) {
-				/* Don't let /dev/console block */
-				filp->f_flags |= O_NONBLOCK;
-				noctty = 1;
-				goto got_driver;
-			}
+	tty = tty_open_current_tty(device, filp);
+	if (IS_ERR(tty)) {
+		retval = PTR_ERR(tty);
+		goto err_unlock;
+	} else if (!tty) {
+		driver = tty_lookup_driver(device, filp, &noctty, &index);
+		if (IS_ERR(driver)) {
+			retval = PTR_ERR(driver);
+			goto err_unlock;
 		}
-		tty_unlock();
-		mutex_unlock(&tty_mutex);
-		tty_free_file(filp);
-		return -ENODEV;
-	}
 
-	driver = get_tty_driver(device, &index);
-	if (!driver) {
-		tty_unlock();
-		mutex_unlock(&tty_mutex);
-		tty_free_file(filp);
-		return -ENODEV;
-	}
-got_driver:
-	if (!tty) {
 		/* check whether we're reopening an existing tty */
 		tty = tty_driver_lookup_tty(driver, inode, index);
-
 		if (IS_ERR(tty)) {
-			tty_unlock();
-			mutex_unlock(&tty_mutex);
-			tty_driver_kref_put(driver);
-			tty_free_file(filp);
-			return PTR_ERR(tty);
+			retval = PTR_ERR(tty);
+			goto err_unlock;
 		}
 	}
 
@@ -1912,21 +1953,22 @@ got_driver:
 		tty = tty_init_dev(driver, index, 0);
 
 	mutex_unlock(&tty_mutex);
-	tty_driver_kref_put(driver);
+	if (driver)
+		tty_driver_kref_put(driver);
 	if (IS_ERR(tty)) {
 		tty_unlock();
-		tty_free_file(filp);
-		return PTR_ERR(tty);
+		retval = PTR_ERR(tty);
+		goto err_file;
 	}
 
 	tty_add_file(tty, filp);
 
-	check_tty_count(tty, "tty_open");
+	check_tty_count(tty, __func__);
 	if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
 	    tty->driver->subtype == PTY_TYPE_MASTER)
 		noctty = 1;
 #ifdef TTY_DEBUG_HANGUP
-	printk(KERN_DEBUG "opening %s...", tty->name);
+	printk(KERN_DEBUG "%s: opening %s...\n", __func__, tty->name);
 #endif
 	if (tty->ops->open)
 		retval = tty->ops->open(tty, filp);
@@ -1940,8 +1982,8 @@ got_driver:
 
 	if (retval) {
 #ifdef TTY_DEBUG_HANGUP
-		printk(KERN_DEBUG "error %d in opening %s...", retval,
-		       tty->name);
+		printk(KERN_DEBUG "%s: error %d in opening %s...\n", __func__,
+				retval, tty->name);
 #endif
 		tty_unlock(); /* need to call tty_release without BTM */
 		tty_release(inode, filp);
@@ -1976,6 +2018,15 @@ got_driver:
 	tty_unlock();
 	mutex_unlock(&tty_mutex);
 	return 0;
+err_unlock:
+	tty_unlock();
+	mutex_unlock(&tty_mutex);
+	/* after locks to avoid deadlock */
+	if (!IS_ERR_OR_NULL(driver))
+		tty_driver_kref_put(driver);
+err_file:
+	tty_free_file(filp);
+	return retval;
 }
 
 
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 8e0924f55446..24b95db75d84 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -1,19 +1,11 @@
 #include <linux/types.h>
-#include <linux/major.h>
 #include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/fcntl.h>
+#include <linux/kmod.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/devpts_fs.h>
 #include <linux/file.h>
-#include <linux/console.h>
-#include <linux/timer.h>
-#include <linux/ctype.h>
-#include <linux/kd.h>
 #include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/slab.h>
@@ -24,18 +16,8 @@
 #include <linux/device.h>
 #include <linux/wait.h>
 #include <linux/bitops.h>
-#include <linux/delay.h>
 #include <linux/seq_file.h>
-
 #include <linux/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/kbd_kern.h>
-#include <linux/vt_kern.h>
-#include <linux/selection.h>
-
-#include <linux/kmod.h>
-#include <linux/nsproxy.h>
 #include <linux/ratelimit.h>
 
 /*
@@ -558,8 +540,6 @@ static int tty_ldisc_wait_idle(struct tty_struct *tty, long timeout)
 	long ret;
 	ret = wait_event_timeout(tty_ldisc_idle,
 			atomic_read(&tty->ldisc->users) == 1, timeout);
-	if (ret < 0)
-		return ret;
 	return ret > 0 ? 0 : -EBUSY;
 }
 
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index ef9dd628ba0b..bf6e238146ae 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -227,7 +227,6 @@ int tty_port_block_til_ready(struct tty_port *port,
 	int do_clocal = 0, retval;
 	unsigned long flags;
 	DEFINE_WAIT(wait);
-	int cd;
 
 	/* block if port is in the process of being closed */
 	if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
@@ -284,11 +283,14 @@ int tty_port_block_til_ready(struct tty_port *port,
 				retval = -ERESTARTSYS;
 			break;
 		}
-		/* Probe the carrier. For devices with no carrier detect this
-		   will always return true */
-		cd = tty_port_carrier_raised(port);
+		/*
+		 * Probe the carrier. For devices with no carrier detect
+		 * tty_port_carrier_raised will always return true.
+		 * Never ask drivers if CLOCAL is set, this causes troubles
+		 * on some hardware.
+		 */
 		if (!(port->flags & ASYNC_CLOSING) &&
-				(do_clocal || cd))
+				(do_clocal || tty_port_carrier_raised(port)))
 			break;
 		if (signal_pending(current)) {
 			retval = -ERESTARTSYS;
diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index 45d3e80156d4..a0f3d6c4d39d 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -584,7 +584,7 @@ int con_set_default_unimap(struct vc_data *vc)
 			return 0;
 		dflt->refcount++;
 		*vc->vc_uni_pagedir_loc = (unsigned long)dflt;
-		if (p && --p->refcount) {
+		if (p && !--p->refcount) {
 			con_release_unimap(p);
 			kfree(p);
 		}