Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (52 commits)
  Blackfin: encode cpu-rev into uImage name
  Blackfin: bf54x: don't ack GPIO ints when unmasking them
  Blackfin: sram_free_with_lsl: do not ignore return value of sram_free
  Blackfin: boards: add missing "static" to peripheral lists
  Blackfin: DNP5370: new board port
  Blackfin: bf518f-ezbrd: fix dsa resources
  Blackfin: move "-m elf32bfin" to general LDFLAGS
  Blackfin: kgdb_test: make sure to initialize num2
  Blackfin: kgdb: disable preempt schedule when running single step in kgdb
  Blackfin: kgdb: disable interrupt when single stepping in ADEOS
  Blackfin: SMP: kgdb: apply anomaly 257 work around
  Blackfin: fix building IPIPE code when XIP is enabled
  Blackfin: SMP: kgdb: flush core internal write buffer before flushinv
  Blackfin: sport_uart resources: remove unused secondary RX/TX pins
  Blackfin: tll6527m: fix spelling in unused code (struct name)
  Blackfin: bf527-ezkit: add adau1373 chip address
  Blackfin: no-mpu: fix masking of small uncached dma region
  Blackfin: pm: drop irq save/restore in standby and suspend to mem callback
  MAINTAINERS: update Analog Devices support info
  Blackfin: dpmc.h: pull in new pll.h
  ...

2 files changed, 388 insertions, 320 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 188aff6..c1df767 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -776,24 +776,7 @@ config BFIN_UART0_CTSRTS
 	bool "Enable UART0 hardware flow control"
 	depends on SERIAL_BFIN_UART0
 	help
-	  Enable hardware flow control in the driver. Using GPIO emulate the CTS/RTS
-	  signal.
-
-config UART0_CTS_PIN
-	int "UART0 CTS pin"
-	depends on BFIN_UART0_CTSRTS && !BF548
-	default 23
-	help
-	  The default pin is GPIO_GP7.
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
-
-config UART0_RTS_PIN
-	int "UART0 RTS pin"
-	depends on BFIN_UART0_CTSRTS && !BF548
-	default 22
-	help
-	  The default pin is GPIO_GP6.
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
+	  Enable hardware flow control in the driver.
 
 config SERIAL_BFIN_UART1
 	bool "Enable UART1"
@@ -805,22 +788,7 @@ config BFIN_UART1_CTSRTS
 	bool "Enable UART1 hardware flow control"
 	depends on SERIAL_BFIN_UART1
 	help
-	  Enable hardware flow control in the driver. Using GPIO emulate the CTS/RTS
-	  signal.
-
-config UART1_CTS_PIN
-	int "UART1 CTS pin"
-	depends on BFIN_UART1_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
-
-config UART1_RTS_PIN
-	int "UART1 RTS pin"
-	depends on BFIN_UART1_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
+	  Enable hardware flow control in the driver.
 
 config SERIAL_BFIN_UART2
 	bool "Enable UART2"
@@ -832,22 +800,7 @@ config BFIN_UART2_CTSRTS
 	bool "Enable UART2 hardware flow control"
 	depends on SERIAL_BFIN_UART2
 	help
-	  Enable hardware flow control in the driver. Using GPIO emulate the CTS/RTS
-	  signal.
-
-config UART2_CTS_PIN
-	int "UART2 CTS pin"
-	depends on BFIN_UART2_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
-
-config UART2_RTS_PIN
-	int "UART2 RTS pin"
-	depends on BFIN_UART2_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
+	  Enable hardware flow control in the driver.
 
 config SERIAL_BFIN_UART3
 	bool "Enable UART3"
@@ -859,22 +812,7 @@ config BFIN_UART3_CTSRTS
 	bool "Enable UART3 hardware flow control"
 	depends on SERIAL_BFIN_UART3
 	help
-	  Enable hardware flow control in the driver. Using GPIO emulate the CTS/RTS
-	  signal.
-
-config UART3_CTS_PIN
-	int "UART3 CTS pin"
-	depends on BFIN_UART3_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
-
-config UART3_RTS_PIN
-	int "UART3 RTS pin"
-	depends on BFIN_UART3_CTSRTS && !BF548
-	default -1
-	help
-	  Refer to arch/blackfin/mach-*/include/mach/gpio.h to see the GPIO map.
+	  Enable hardware flow control in the driver.
 
 config SERIAL_IMX
 	bool "IMX serial port support"
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 19cac9f..e381b89 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -1,7 +1,7 @@
 /*
  * Blackfin On-Chip Serial Driver
  *
- * Copyright 2006-2008 Analog Devices Inc.
+ * Copyright 2006-2010 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
  *
@@ -12,6 +12,9 @@
 #define SUPPORT_SYSRQ
 #endif
 
+#define DRIVER_NAME "bfin-uart"
+#define pr_fmt(fmt) DRIVER_NAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/ioport.h>
 #include <linux/gfp.h>
@@ -23,21 +26,20 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/serial_core.h>
-#include <linux/dma-mapping.h>
-
-#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+#include <linux/gpio.h>
+#include <linux/irq.h>
 #include <linux/kgdb.h>
-#include <asm/irq_regs.h>
-#endif
-
-#include <asm/gpio.h>
-#include <mach/bfin_serial_5xx.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
 
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/irq.h>
+#include <asm/portmux.h>
 #include <asm/cacheflush.h>
+#include <asm/dma.h>
+
+#define port_membase(uart)     (((struct bfin_serial_port *)(uart))->port.membase)
+#define get_lsr_cache(uart)    (((struct bfin_serial_port *)(uart))->lsr)
+#define put_lsr_cache(uart, v) (((struct bfin_serial_port *)(uart))->lsr = (v))
+#include <asm/bfin_serial.h>
 
 #ifdef CONFIG_SERIAL_BFIN_MODULE
 # undef CONFIG_EARLY_PRINTK
@@ -48,12 +50,11 @@
 #endif
 
 /* UART name and device definitions */
-#define BFIN_SERIAL_NAME	"ttyBF"
+#define BFIN_SERIAL_DEV_NAME	"ttyBF"
 #define BFIN_SERIAL_MAJOR	204
 #define BFIN_SERIAL_MINOR	64
 
-static struct bfin_serial_port bfin_serial_ports[BFIN_UART_NR_PORTS];
-static int nr_active_ports = ARRAY_SIZE(bfin_serial_resource);
+static struct bfin_serial_port *bfin_serial_ports[BFIN_UART_NR_PORTS];
 
 #if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
 	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
@@ -743,14 +744,14 @@ static int bfin_serial_startup(struct uart_port *port)
 		}
 	}
 	if (uart->rts_pin >= 0) {
-		gpio_request(uart->rts_pin, DRIVER_NAME);
 		gpio_direction_output(uart->rts_pin, 0);
 	}
 #endif
 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (request_irq(uart->status_irq,
+	if (uart->cts_pin >= 0 && request_irq(uart->status_irq,
 		bfin_serial_mctrl_cts_int,
 		IRQF_DISABLED, "BFIN_UART_MODEM_STATUS", uart)) {
+		uart->cts_pin = -1;
 		pr_info("Unable to attach BlackFin UART Modem Status interrupt.\n");
 	}
 
@@ -796,11 +797,9 @@ 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_GET_IER(uart) & EDSSI)
+	if (uart->cts_pin >= 0)
 		free_irq(uart->status_irq, uart);
 #endif
 }
@@ -962,33 +961,33 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
  */
 static void bfin_serial_set_ldisc(struct uart_port *port, int ld)
 {
-	int line = port->line;
+	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 	unsigned short val;
 
 	switch (ld) {
 	case N_IRDA:
-		val = UART_GET_GCTL(&bfin_serial_ports[line]);
+		val = UART_GET_GCTL(uart);
 		val |= (IREN | RPOLC);
-		UART_PUT_GCTL(&bfin_serial_ports[line], val);
+		UART_PUT_GCTL(uart, val);
 		break;
 	default:
-		val = UART_GET_GCTL(&bfin_serial_ports[line]);
+		val = UART_GET_GCTL(uart);
 		val &= ~(IREN | RPOLC);
-		UART_PUT_GCTL(&bfin_serial_ports[line], val);
+		UART_PUT_GCTL(uart, val);
 	}
 }
 
 static void bfin_serial_reset_irda(struct uart_port *port)
 {
-	int line = port->line;
+	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 	unsigned short val;
 
-	val = UART_GET_GCTL(&bfin_serial_ports[line]);
+	val = UART_GET_GCTL(uart);
 	val &= ~(IREN | RPOLC);
-	UART_PUT_GCTL(&bfin_serial_ports[line], val);
+	UART_PUT_GCTL(uart, val);
 	SSYNC();
 	val |= (IREN | RPOLC);
-	UART_PUT_GCTL(&bfin_serial_ports[line], val);
+	UART_PUT_GCTL(uart, val);
 	SSYNC();
 }
 
@@ -1070,85 +1069,6 @@ static struct uart_ops bfin_serial_pops = {
 #endif
 };
 
-static void __init bfin_serial_hw_init(void)
-{
-#ifdef CONFIG_SERIAL_BFIN_UART0
-	peripheral_request(P_UART0_TX, DRIVER_NAME);
-	peripheral_request(P_UART0_RX, DRIVER_NAME);
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_UART1
-	peripheral_request(P_UART1_TX, DRIVER_NAME);
-	peripheral_request(P_UART1_RX, DRIVER_NAME);
-
-# if defined(CONFIG_BFIN_UART1_CTSRTS) && defined(CONFIG_BF54x)
-	peripheral_request(P_UART1_RTS, DRIVER_NAME);
-	peripheral_request(P_UART1_CTS, DRIVER_NAME);
-# endif
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_UART2
-	peripheral_request(P_UART2_TX, DRIVER_NAME);
-	peripheral_request(P_UART2_RX, DRIVER_NAME);
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_UART3
-	peripheral_request(P_UART3_TX, DRIVER_NAME);
-	peripheral_request(P_UART3_RX, DRIVER_NAME);
-
-# if defined(CONFIG_BFIN_UART3_CTSRTS) && defined(CONFIG_BF54x)
-	peripheral_request(P_UART3_RTS, DRIVER_NAME);
-	peripheral_request(P_UART3_CTS, DRIVER_NAME);
-# endif
-#endif
-}
-
-static void __init bfin_serial_init_ports(void)
-{
-	static int first = 1;
-	int i;
-
-	if (!first)
-		return;
-	first = 0;
-
-	bfin_serial_hw_init();
-
-	for (i = 0; i < nr_active_ports; i++) {
-		spin_lock_init(&bfin_serial_ports[i].port.lock);
-		bfin_serial_ports[i].port.uartclk   = get_sclk();
-		bfin_serial_ports[i].port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
-		bfin_serial_ports[i].port.ops       = &bfin_serial_pops;
-		bfin_serial_ports[i].port.line      = i;
-		bfin_serial_ports[i].port.iotype    = UPIO_MEM;
-		bfin_serial_ports[i].port.membase   =
-			(void __iomem *)bfin_serial_resource[i].uart_base_addr;
-		bfin_serial_ports[i].port.mapbase   =
-			bfin_serial_resource[i].uart_base_addr;
-		bfin_serial_ports[i].port.irq       =
-			bfin_serial_resource[i].uart_irq;
-		bfin_serial_ports[i].status_irq	    =
-			bfin_serial_resource[i].uart_status_irq;
-		bfin_serial_ports[i].port.flags     = UPF_BOOT_AUTOCONF;
-#ifdef CONFIG_SERIAL_BFIN_DMA
-		bfin_serial_ports[i].tx_done	    = 1;
-		bfin_serial_ports[i].tx_count	    = 0;
-		bfin_serial_ports[i].tx_dma_channel =
-			bfin_serial_resource[i].uart_tx_dma_channel;
-		bfin_serial_ports[i].rx_dma_channel =
-			bfin_serial_resource[i].uart_rx_dma_channel;
-		init_timer(&(bfin_serial_ports[i].rx_dma_timer));
-#endif
-#if defined(CONFIG_SERIAL_BFIN_CTSRTS) || \
-	defined(CONFIG_SERIAL_BFIN_HARD_CTSRTS)
-		bfin_serial_ports[i].cts_pin	    =
-			bfin_serial_resource[i].uart_cts_pin;
-		bfin_serial_ports[i].rts_pin	    =
-			bfin_serial_resource[i].uart_rts_pin;
-#endif
-	}
-}
-
 #if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
 /*
  * If the port was already initialised (eg, by a boot loader),
@@ -1196,6 +1116,34 @@ bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
 
 static struct uart_driver bfin_serial_reg;
 
+static void bfin_serial_console_putchar(struct uart_port *port, int ch)
+{
+	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+	while (!(UART_GET_LSR(uart) & THRE))
+		barrier();
+	UART_PUT_CHAR(uart, ch);
+}
+
+#endif /* defined (CONFIG_SERIAL_BFIN_CONSOLE) ||
+		 defined (CONFIG_EARLY_PRINTK) */
+
+#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+#define CLASS_BFIN_CONSOLE	"bfin-console"
+/*
+ * Interrupts are disabled on entering
+ */
+static void
+bfin_serial_console_write(struct console *co, const char *s, unsigned int count)
+{
+	struct bfin_serial_port *uart = bfin_serial_ports[co->index];
+	unsigned long flags;
+
+	spin_lock_irqsave(&uart->port.lock, flags);
+	uart_console_write(&uart->port, s, count, bfin_serial_console_putchar);
+	spin_unlock_irqrestore(&uart->port.lock, flags);
+
+}
+
 static int __init
 bfin_serial_console_setup(struct console *co, char *options)
 {
@@ -1215,9 +1163,12 @@ bfin_serial_console_setup(struct console *co, char *options)
 	 * if so, search for the first available port that does have
 	 * console support.
 	 */
-	if (co->index == -1 || co->index >= nr_active_ports)
-		co->index = 0;
-	uart = &bfin_serial_ports[co->index];
+	if (co->index < 0 || co->index >= BFIN_UART_NR_PORTS)
+		return -ENODEV;
+
+	uart = bfin_serial_ports[co->index];
+	if (!uart)
+		return -ENODEV;
 
 	if (options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -1226,36 +1177,9 @@ bfin_serial_console_setup(struct console *co, char *options)
 
 	return uart_set_options(&uart->port, co, baud, parity, bits, flow);
 }
-#endif /* defined (CONFIG_SERIAL_BFIN_CONSOLE) ||
-				 defined (CONFIG_EARLY_PRINTK) */
-
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-static void bfin_serial_console_putchar(struct uart_port *port, int ch)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	while (!(UART_GET_LSR(uart) & THRE))
-		barrier();
-	UART_PUT_CHAR(uart, ch);
-	SSYNC();
-}
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-bfin_serial_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct bfin_serial_port *uart = &bfin_serial_ports[co->index];
-	unsigned long flags;
-
-	spin_lock_irqsave(&uart->port.lock, flags);
-	uart_console_write(&uart->port, s, count, bfin_serial_console_putchar);
-	spin_unlock_irqrestore(&uart->port.lock, flags);
-
-}
 
 static struct console bfin_serial_console = {
-	.name		= BFIN_SERIAL_NAME,
+	.name		= BFIN_SERIAL_DEV_NAME,
 	.write		= bfin_serial_console_write,
 	.device		= uart_console_device,
 	.setup		= bfin_serial_console_setup,
@@ -1263,44 +1187,30 @@ static struct console bfin_serial_console = {
 	.index		= -1,
 	.data		= &bfin_serial_reg,
 };
-
-static int __init bfin_serial_rs_console_init(void)
-{
-	bfin_serial_init_ports();
-	register_console(&bfin_serial_console);
-
-	return 0;
-}
-console_initcall(bfin_serial_rs_console_init);
-
 #define BFIN_SERIAL_CONSOLE	&bfin_serial_console
 #else
 #define BFIN_SERIAL_CONSOLE	NULL
 #endif /* CONFIG_SERIAL_BFIN_CONSOLE */
 
+#ifdef	CONFIG_EARLY_PRINTK
+static struct bfin_serial_port bfin_earlyprintk_port;
+#define CLASS_BFIN_EARLYPRINTK	"bfin-earlyprintk"
 
-#ifdef CONFIG_EARLY_PRINTK
-static __init void early_serial_putc(struct uart_port *port, int ch)
+/*
+ * Interrupts are disabled on entering
+ */
+static void
+bfin_earlyprintk_console_write(struct console *co, const char *s, unsigned int count)
 {
-	unsigned timeout = 0xffff;
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	while ((!(UART_GET_LSR(uart) & THRE)) && --timeout)
-		cpu_relax();
-	UART_PUT_CHAR(uart, ch);
-}
+	unsigned long flags;
 
-static __init void early_serial_write(struct console *con, const char *s,
-					unsigned int n)
-{
-	struct bfin_serial_port *uart = &bfin_serial_ports[con->index];
-	unsigned int i;
+	if (bfin_earlyprintk_port.port.line != co->index)
+		return;
 
-	for (i = 0; i < n; i++, s++) {
-		if (*s == '\n')
-			early_serial_putc(&uart->port, '\r');
-		early_serial_putc(&uart->port, *s);
-	}
+	spin_lock_irqsave(&bfin_earlyprintk_port.port.lock, flags);
+	uart_console_write(&bfin_earlyprintk_port.port, s, count,
+		bfin_serial_console_putchar);
+	spin_unlock_irqrestore(&bfin_earlyprintk_port.port.lock, flags);
 }
 
 /*
@@ -1311,113 +1221,204 @@ static __init void early_serial_write(struct console *con, const char *s,
  */
 static struct __initdata console bfin_early_serial_console = {
 	.name = "early_BFuart",
-	.write = early_serial_write,
+	.write = bfin_earlyprintk_console_write,
 	.device = uart_console_device,
 	.flags = CON_PRINTBUFFER,
 	.index = -1,
 	.data  = &bfin_serial_reg,
 };
-
-struct console __init *bfin_earlyserial_init(unsigned int port,
-						unsigned int cflag)
-{
-	struct bfin_serial_port *uart;
-	struct ktermios t;
-
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-	/*
-	 * If we are using early serial, don't let the normal console rewind
-	 * log buffer, since that causes things to be printed multiple times
-	 */
-	bfin_serial_console.flags &= ~CON_PRINTBUFFER;
 #endif
 
-	if (port == -1 || port >= nr_active_ports)
-		port = 0;
-	bfin_serial_init_ports();
-	bfin_early_serial_console.index = port;
-	uart = &bfin_serial_ports[port];
-	t.c_cflag = cflag;
-	t.c_iflag = 0;
-	t.c_oflag = 0;
-	t.c_lflag = ICANON;
-	t.c_line = port;
-	bfin_serial_set_termios(&uart->port, &t, &t);
-	return &bfin_early_serial_console;
-}
-
-#endif /* CONFIG_EARLY_PRINTK */
-
 static struct uart_driver bfin_serial_reg = {
 	.owner			= THIS_MODULE,
-	.driver_name		= "bfin-uart",
-	.dev_name		= BFIN_SERIAL_NAME,
+	.driver_name		= DRIVER_NAME,
+	.dev_name		= BFIN_SERIAL_DEV_NAME,
 	.major			= BFIN_SERIAL_MAJOR,
 	.minor			= BFIN_SERIAL_MINOR,
 	.nr			= BFIN_UART_NR_PORTS,
 	.cons			= BFIN_SERIAL_CONSOLE,
 };
 
-static int bfin_serial_suspend(struct platform_device *dev, pm_message_t state)
+static int bfin_serial_suspend(struct platform_device *pdev, pm_message_t state)
 {
-	int i;
+	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
 
-	for (i = 0; i < nr_active_ports; i++) {
-		if (bfin_serial_ports[i].port.dev != &dev->dev)
-			continue;
-		uart_suspend_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
-	}
+	return uart_suspend_port(&bfin_serial_reg, &uart->port);
+}
 
-	return 0;
+static int bfin_serial_resume(struct platform_device *pdev)
+{
+	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
+
+	return uart_resume_port(&bfin_serial_reg, &uart->port);
 }
 
-static int bfin_serial_resume(struct platform_device *dev)
+static int bfin_serial_probe(struct platform_device *pdev)
 {
-	int i;
+	struct resource *res;
+	struct bfin_serial_port *uart = NULL;
+	int ret = 0;
 
-	for (i = 0; i < nr_active_ports; i++) {
-		if (bfin_serial_ports[i].port.dev != &dev->dev)
-			continue;
-		uart_resume_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
+	if (pdev->id < 0 || pdev->id >= BFIN_UART_NR_PORTS) {
+		dev_err(&pdev->dev, "Wrong bfin uart platform device id.\n");
+		return -ENOENT;
 	}
 
-	return 0;
-}
+	if (bfin_serial_ports[pdev->id] == NULL) {
 
-static int bfin_serial_probe(struct platform_device *dev)
-{
-	struct resource *res = dev->resource;
-	int i;
+		uart = kzalloc(sizeof(*uart), GFP_KERNEL);
+		if (!uart) {
+			dev_err(&pdev->dev,
+				"fail to malloc bfin_serial_port\n");
+			return -ENOMEM;
+		}
+		bfin_serial_ports[pdev->id] = uart;
 
-	for (i = 0; i < dev->num_resources; i++, res++)
-		if (res->flags & IORESOURCE_MEM)
-			break;
+#ifdef CONFIG_EARLY_PRINTK
+		if (!(bfin_earlyprintk_port.port.membase
+			&& bfin_earlyprintk_port.port.line == pdev->id)) {
+			/*
+			 * If the peripheral PINs of current port is allocated
+			 * in earlyprintk probe stage, don't do it again.
+			 */
+#endif
+		ret = peripheral_request_list(
+			(unsigned short *)pdev->dev.platform_data, DRIVER_NAME);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"fail to request bfin serial peripherals\n");
+			goto out_error_free_mem;
+		}
+#ifdef CONFIG_EARLY_PRINTK
+		}
+#endif
+
+		spin_lock_init(&uart->port.lock);
+		uart->port.uartclk   = get_sclk();
+		uart->port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
+		uart->port.ops       = &bfin_serial_pops;
+		uart->port.line      = pdev->id;
+		uart->port.iotype    = UPIO_MEM;
+		uart->port.flags     = UPF_BOOT_AUTOCONF;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (res == NULL) {
+			dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
+			ret = -ENOENT;
+			goto out_error_free_peripherals;
+		}
+
+		uart->port.membase = ioremap(res->start,
+			res->end - res->start);
+		if (!uart->port.membase) {
+			dev_err(&pdev->dev, "Cannot map uart IO\n");
+			ret = -ENXIO;
+			goto out_error_free_peripherals;
+		}
+		uart->port.mapbase = res->start;
 
-	if (i < dev->num_resources) {
-		for (i = 0; i < nr_active_ports; i++, res++) {
-			if (bfin_serial_ports[i].port.mapbase != res->start)
-				continue;
-			bfin_serial_ports[i].port.dev = &dev->dev;
-			uart_add_one_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
+		uart->port.irq = platform_get_irq(pdev, 0);
+		if (uart->port.irq < 0) {
+			dev_err(&pdev->dev, "No uart RX/TX IRQ specified\n");
+			ret = -ENOENT;
+			goto out_error_unmap;
 		}
+
+		uart->status_irq = platform_get_irq(pdev, 1);
+		if (uart->status_irq < 0) {
+			dev_err(&pdev->dev, "No uart status IRQ specified\n");
+			ret = -ENOENT;
+			goto out_error_unmap;
+		}
+
+#ifdef CONFIG_SERIAL_BFIN_DMA
+		uart->tx_done	    = 1;
+		uart->tx_count	    = 0;
+
+		res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+		if (res == NULL) {
+			dev_err(&pdev->dev, "No uart TX DMA channel specified\n");
+			ret = -ENOENT;
+			goto out_error_unmap;
+		}
+		uart->tx_dma_channel = res->start;
+
+		res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+		if (res == NULL) {
+			dev_err(&pdev->dev, "No uart RX DMA channel specified\n");
+			ret = -ENOENT;
+			goto out_error_unmap;
+		}
+		uart->rx_dma_channel = res->start;
+
+		init_timer(&(uart->rx_dma_timer));
+#endif
+
+#if defined(CONFIG_SERIAL_BFIN_CTSRTS) || \
+	defined(CONFIG_SERIAL_BFIN_HARD_CTSRTS)
+		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+		if (res == NULL)
+			uart->cts_pin = -1;
+		else
+			uart->cts_pin = res->start;
+
+		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
 	}
 
-	return 0;
+#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+	if (!is_early_platform_device(pdev)) {
+#endif
+		uart = bfin_serial_ports[pdev->id];
+		uart->port.dev = &pdev->dev;
+		dev_set_drvdata(&pdev->dev, uart);
+		ret = uart_add_one_port(&bfin_serial_reg, &uart->port);
+#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+	}
+#endif
+
+	if (!ret)
+		return 0;
+
+	if (uart) {
+out_error_unmap:
+		iounmap(uart->port.membase);
+out_error_free_peripherals:
+		peripheral_free_list(
+			(unsigned short *)pdev->dev.platform_data);
+out_error_free_mem:
+		kfree(uart);
+		bfin_serial_ports[pdev->id] = NULL;
+	}
+
+	return ret;
 }
 
-static int bfin_serial_remove(struct platform_device *dev)
+static int __devexit bfin_serial_remove(struct platform_device *pdev)
 {
-	int i;
-
-	for (i = 0; i < nr_active_ports; i++) {
-		if (bfin_serial_ports[i].port.dev != &dev->dev)
-			continue;
-		uart_remove_one_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
-		bfin_serial_ports[i].port.dev = NULL;
-#if defined(CONFIG_SERIAL_BFIN_CTSRTS)
-		gpio_free(bfin_serial_ports[i].cts_pin);
-		gpio_free(bfin_serial_ports[i].rts_pin);
+	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
+
+	dev_set_drvdata(&pdev->dev, NULL);
+
+	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);
+		kfree(uart);
+		bfin_serial_ports[pdev->id] = NULL;
 	}
 
 	return 0;
@@ -1425,31 +1426,160 @@ static int bfin_serial_remove(struct platform_device *dev)
 
 static struct platform_driver bfin_serial_driver = {
 	.probe		= bfin_serial_probe,
-	.remove		= bfin_serial_remove,
+	.remove		= __devexit_p(bfin_serial_remove),
 	.suspend	= bfin_serial_suspend,
 	.resume		= bfin_serial_resume,
 	.driver		= {
-		.name	= "bfin-uart",
+		.name	= DRIVER_NAME,
 		.owner	= THIS_MODULE,
 	},
 };
 
-static int __init bfin_serial_init(void)
+#if defined(CONFIG_SERIAL_BFIN_CONSOLE)
+static __initdata struct early_platform_driver early_bfin_serial_driver = {
+	.class_str = CLASS_BFIN_CONSOLE,
+	.pdrv = &bfin_serial_driver,
+	.requested_id = EARLY_PLATFORM_ID_UNSET,
+};
+
+static int __init bfin_serial_rs_console_init(void)
+{
+	early_platform_driver_register(&early_bfin_serial_driver, DRIVER_NAME);
+
+	early_platform_driver_probe(CLASS_BFIN_CONSOLE, BFIN_UART_NR_PORTS, 0);
+
+	register_console(&bfin_serial_console);
+
+	return 0;
+}
+console_initcall(bfin_serial_rs_console_init);
+#endif
+
+#ifdef CONFIG_EARLY_PRINTK
+/*
+ * Memory can't be allocated dynamically during earlyprink init stage.
+ * So, do individual probe for earlyprink with a static uart port variable.
+ */
+static int bfin_earlyprintk_probe(struct platform_device *pdev)
 {
+	struct resource *res;
 	int ret;
 
-	pr_info("Serial: Blackfin serial driver\n");
+	if (pdev->id < 0 || pdev->id >= BFIN_UART_NR_PORTS) {
+		dev_err(&pdev->dev, "Wrong earlyprintk platform device id.\n");
+		return -ENOENT;
+	}
+
+	ret = peripheral_request_list(
+		(unsigned short *)pdev->dev.platform_data, DRIVER_NAME);
+	if (ret) {
+		dev_err(&pdev->dev,
+				"fail to request bfin serial peripherals\n");
+			return ret;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
+		ret = -ENOENT;
+		goto out_error_free_peripherals;
+	}
+
+	bfin_earlyprintk_port.port.membase = ioremap(res->start,
+			res->end - res->start);
+	if (!bfin_earlyprintk_port.port.membase) {
+		dev_err(&pdev->dev, "Cannot map uart IO\n");
+		ret = -ENXIO;
+		goto out_error_free_peripherals;
+	}
+	bfin_earlyprintk_port.port.mapbase = res->start;
+	bfin_earlyprintk_port.port.line = pdev->id;
+	bfin_earlyprintk_port.port.uartclk = get_sclk();
+	bfin_earlyprintk_port.port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
+	spin_lock_init(&bfin_earlyprintk_port.port.lock);
+
+	return 0;
+
+out_error_free_peripherals:
+	peripheral_free_list(
+		(unsigned short *)pdev->dev.platform_data);
+
+	return ret;
+}
+
+static struct platform_driver bfin_earlyprintk_driver = {
+	.probe		= bfin_earlyprintk_probe,
+	.driver		= {
+		.name	= DRIVER_NAME,
+		.owner	= THIS_MODULE,
+	},
+};
+
+static __initdata struct early_platform_driver early_bfin_earlyprintk_driver = {
+	.class_str = CLASS_BFIN_EARLYPRINTK,
+	.pdrv = &bfin_earlyprintk_driver,
+	.requested_id = EARLY_PLATFORM_ID_UNSET,
+};
+
+struct console __init *bfin_earlyserial_init(unsigned int port,
+						unsigned int cflag)
+{
+	struct ktermios t;
+	char port_name[20];
 
-	bfin_serial_init_ports();
+	if (port < 0 || port >= BFIN_UART_NR_PORTS)
+		return NULL;
+
+	/*
+	 * Only probe resource of the given port in earlyprintk boot arg.
+	 * The expected port id should be indicated in port name string.
+	 */
+	snprintf(port_name, 20, DRIVER_NAME ".%d", port);
+	early_platform_driver_register(&early_bfin_earlyprintk_driver,
+		port_name);
+	early_platform_driver_probe(CLASS_BFIN_EARLYPRINTK, 1, 0);
+
+	if (!bfin_earlyprintk_port.port.membase)
+		return NULL;
+
+#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+	/*
+	 * If we are using early serial, don't let the normal console rewind
+	 * log buffer, since that causes things to be printed multiple times
+	 */
+	bfin_serial_console.flags &= ~CON_PRINTBUFFER;
+#endif
+
+	bfin_early_serial_console.index = port;
+	t.c_cflag = cflag;
+	t.c_iflag = 0;
+	t.c_oflag = 0;
+	t.c_lflag = ICANON;
+	t.c_line = port;
+	bfin_serial_set_termios(&bfin_earlyprintk_port.port, &t, &t);
+
+	return &bfin_early_serial_console;
+}
+#endif /* CONFIG_EARLY_PRINTK */
+
+static int __init bfin_serial_init(void)
+{
+	int ret;
+
+	pr_info("Blackfin serial driver\n");
 
 	ret = uart_register_driver(&bfin_serial_reg);
-	if (ret == 0) {
-		ret = platform_driver_register(&bfin_serial_driver);
-		if (ret) {
-			pr_debug("uart register failed\n");
-			uart_unregister_driver(&bfin_serial_reg);
-		}
+	if (ret) {
+		pr_err("failed to register %s:%d\n",
+			bfin_serial_reg.driver_name, ret);
+	}
+
+	ret = platform_driver_register(&bfin_serial_driver);
+	if (ret) {
+		pr_err("fail to register bfin uart\n");
+		uart_unregister_driver(&bfin_serial_reg);
 	}
+
 	return ret;
 }
 
@@ -1463,7 +1593,7 @@ static void __exit bfin_serial_exit(void)
 module_init(bfin_serial_init);
 module_exit(bfin_serial_exit);
 
-MODULE_AUTHOR("Aubrey.Li <aubrey.li@analog.com>");
+MODULE_AUTHOR("Sonic Zhang, Aubrey Li");
 MODULE_DESCRIPTION("Blackfin generic serial port driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_CHARDEV_MAJOR(BFIN_SERIAL_MAJOR);