serial: remove blackfin drivers

The blackfin architecture is getting removed, so both the bfin_uart
and bfin_sport_uart can be removed as well.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/tty/serial/Kconfig

@@ -498,92 +498,6 @@ config SERIAL_SA1100_CONSOLE
 	  your boot loader (lilo or loadlin) about how to pass options to the
 	  kernel at boot time.)
 
-config SERIAL_BFIN
-	tristate "Blackfin serial port support"
-	depends on BLACKFIN
-	select SERIAL_CORE
-	select SERIAL_BFIN_UART0 if (BF531 || BF532 || BF533 || BF561)
-	help
-	  Add support for the built-in UARTs on the Blackfin.
-
-	  To compile this driver as a module, choose M here: the
-	  module is named bfin_uart.ko.
-
-config SERIAL_BFIN_CONSOLE
-	bool "Console on Blackfin serial port"
-	depends on SERIAL_BFIN=y
-	select SERIAL_CORE_CONSOLE
-
-choice
-	prompt "UART Mode"
-	depends on SERIAL_BFIN
-	default SERIAL_BFIN_DMA
-	help
-	  This driver supports the built-in serial ports of the Blackfin family
-	  of CPUs
-
-config SERIAL_BFIN_DMA
-	bool "DMA mode"
-	depends on !DMA_UNCACHED_NONE && KGDB_SERIAL_CONSOLE=n
-	help
-	  This driver works under DMA mode. If this option is selected, the
-	  blackfin simple dma driver is also enabled.
-
-config SERIAL_BFIN_PIO
-	bool "PIO mode"
-	help
-	  This driver works under PIO mode.
-
-endchoice
-
-config SERIAL_BFIN_UART0
-	bool "Enable UART0"
-	depends on SERIAL_BFIN
-	help
-	  Enable UART0
-
-config BFIN_UART0_CTSRTS
-	bool "Enable UART0 hardware flow control"
-	depends on SERIAL_BFIN_UART0
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART1
-	bool "Enable UART1"
-	depends on SERIAL_BFIN && (!BF531 && !BF532 && !BF533 && !BF561)
-	help
-	  Enable UART1
-
-config BFIN_UART1_CTSRTS
-	bool "Enable UART1 hardware flow control"
-	depends on SERIAL_BFIN_UART1
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART2
-	bool "Enable UART2"
-	depends on SERIAL_BFIN && (BF54x || BF538 || BF539)
-	help
-	  Enable UART2
-
-config BFIN_UART2_CTSRTS
-	bool "Enable UART2 hardware flow control"
-	depends on SERIAL_BFIN_UART2
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART3
-	bool "Enable UART3"
-	depends on SERIAL_BFIN && (BF54x)
-	help
-	  Enable UART3
-
-config BFIN_UART3_CTSRTS
-	bool "Enable UART3 hardware flow control"
-	depends on SERIAL_BFIN_UART3
-	help
-	  Enable hardware flow control in the driver.
-
 config SERIAL_IMX
 	tristate "IMX serial port support"
 	depends on HAS_DMA
@@ -1231,69 +1145,6 @@ config SERIAL_SC16IS7XX_SPI
           This is additional support to exsisting driver.
           You must select at least one bus for the driver to be built.
 
-config SERIAL_BFIN_SPORT
-	tristate "Blackfin SPORT emulate UART"
-	depends on BLACKFIN
-	select SERIAL_CORE
-	help
-	  Enable SPORT emulate UART on Blackfin series.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bfin_sport_uart.
-
-config SERIAL_BFIN_SPORT_CONSOLE
-	bool "Console on Blackfin sport emulated uart"
-	depends on SERIAL_BFIN_SPORT=y
-	select SERIAL_CORE_CONSOLE
-
-config SERIAL_BFIN_SPORT0_UART
-	bool "Enable UART over SPORT0"
-	depends on SERIAL_BFIN_SPORT && !(BF542 || BF544)
-	help
-	  Enable UART over SPORT0
-
-config SERIAL_BFIN_SPORT0_UART_CTSRTS
-	bool "Enable UART over SPORT0 hardware flow control"
-	depends on SERIAL_BFIN_SPORT0_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT1_UART
-	bool "Enable UART over SPORT1"
-	depends on SERIAL_BFIN_SPORT
-	help
-	  Enable UART over SPORT1
-
-config SERIAL_BFIN_SPORT1_UART_CTSRTS
-	bool "Enable UART over SPORT1 hardware flow control"
-	depends on SERIAL_BFIN_SPORT1_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT2_UART
-	bool "Enable UART over SPORT2"
-	depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
-	help
-	  Enable UART over SPORT2
-
-config SERIAL_BFIN_SPORT2_UART_CTSRTS
-	bool "Enable UART over SPORT2 hardware flow control"
-	depends on SERIAL_BFIN_SPORT2_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT3_UART
-	bool "Enable UART over SPORT3"
-	depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
-	help
-	  Enable UART over SPORT3
-
-config SERIAL_BFIN_SPORT3_UART_CTSRTS
-	bool "Enable UART over SPORT3 hardware flow control"
-	depends on SERIAL_BFIN_SPORT3_UART
-	help
-	  Enable hardware flow control in the driver.
-
 config SERIAL_TIMBERDALE
 	tristate "Support for timberdale UART"
 	select SERIAL_CORE

drivers/tty/serial/Makefile

@@ -29,8 +29,6 @@ obj-$(CONFIG_SERIAL_PXA_NON8250) += pxa.o
 obj-$(CONFIG_SERIAL_PNX8XXX) += pnx8xxx_uart.o
 obj-$(CONFIG_SERIAL_SA1100) += sa1100.o
 obj-$(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_MAX3100) += max3100.o
 obj-$(CONFIG_SERIAL_MAX310X) += max310x.o

drivers/tty/serial/bfin_sport_uart.c

-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Sport Emulated UART Driver
- *
- * Copyright 2006-2009 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-/*
- * This driver and the hardware supported are in term of EE-191 of ADI.
- * http://www.analog.com/static/imported-files/application_notes/EE191.pdf 
- * This application note describe how to implement a UART on a Sharc DSP,
- * but this driver is implemented on Blackfin Processor.
- * Transmit Frame Sync is not used by this driver to transfer data out.
- */
-
-/* #define DEBUG */
-
-#define DRV_NAME "bfin-sport-uart"
-#define DEVICE_NAME	"ttySS"
-#define pr_fmt(fmt) DRV_NAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/gpio.h>
-
-#include <asm/bfin_sport.h>
-#include <asm/delay.h>
-#include <asm/portmux.h>
-
-#include "bfin_sport_uart.h"
-
-struct sport_uart_port {
-	struct uart_port	port;
-	int			err_irq;
-	unsigned short		csize;
-	unsigned short		rxmask;
-	unsigned short		txmask1;
-	unsigned short		txmask2;
-	unsigned char		stopb;
-/*	unsigned char		parib; */
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	int cts_pin;
-	int rts_pin;
-#endif
-};
-
-static int sport_uart_tx_chars(struct sport_uart_port *up);
-static void sport_stop_tx(struct uart_port *port);
-
-static inline void tx_one_byte(struct sport_uart_port *up, unsigned int value)
-{
-	pr_debug("%s value:%x, mask1=0x%x, mask2=0x%x\n", __func__, value,
-		up->txmask1, up->txmask2);
-
-	/* Place Start and Stop bits */
-	__asm__ __volatile__ (
-		"%[val] <<= 1;"
-		"%[val] = %[val] & %[mask1];"
-		"%[val] = %[val] | %[mask2];"
-		: [val]"+d"(value)
-		: [mask1]"d"(up->txmask1), [mask2]"d"(up->txmask2)
-		: "ASTAT"
-	);
-	pr_debug("%s value:%x\n", __func__, value);
-
-	SPORT_PUT_TX(up, value);
-}
-
-static inline unsigned char rx_one_byte(struct sport_uart_port *up)
-{
-	unsigned int value;
-	unsigned char extract;
-	u32 tmp_mask1, tmp_mask2, tmp_shift, tmp;
-
-	if ((up->csize + up->stopb) > 7)
-		value = SPORT_GET_RX32(up);
-	else
-		value = SPORT_GET_RX(up);
-
-	pr_debug("%s value:%x, cs=%d, mask=0x%x\n", __func__, value,
-		up->csize, up->rxmask);
-
-	/* Extract data */
-	__asm__ __volatile__ (
-		"%[extr] = 0;"
-		"%[mask1] = %[rxmask];"
-		"%[mask2] = 0x0200(Z);"
-		"%[shift] = 0;"
-		"LSETUP(.Lloop_s, .Lloop_e) LC0 = %[lc];"
-		".Lloop_s:"
-		"%[tmp] = extract(%[val], %[mask1].L)(Z);"
-		"%[tmp] <<= %[shift];"
-		"%[extr] = %[extr] | %[tmp];"
-		"%[mask1] = %[mask1] - %[mask2];"
-		".Lloop_e:"
-		"%[shift] += 1;"
-		: [extr]"=&d"(extract), [shift]"=&d"(tmp_shift), [tmp]"=&d"(tmp),
-		  [mask1]"=&d"(tmp_mask1), [mask2]"=&d"(tmp_mask2)
-		: [val]"d"(value), [rxmask]"d"(up->rxmask), [lc]"a"(up->csize)
-		: "ASTAT", "LB0", "LC0", "LT0"
-	);
-
-	pr_debug("	extract:%x\n", extract);
-	return extract;
-}
-
-static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate)
-{
-	int tclkdiv, rclkdiv;
-	unsigned int sclk = get_sclk();
-
-	/* Set TCR1 and TCR2, TFSR is not enabled for uart */
-	SPORT_PUT_TCR1(up, (LATFS | ITFS | TFSR | TLSBIT | ITCLK));
-	SPORT_PUT_TCR2(up, size + 1);
-	pr_debug("%s TCR1:%x, TCR2:%x\n", __func__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up));
-
-	/* Set RCR1 and RCR2 */
-	SPORT_PUT_RCR1(up, (RCKFE | LARFS | LRFS | RFSR | IRCLK));
-	SPORT_PUT_RCR2(up, (size + 1) * 2 - 1);
-	pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up));
-
-	tclkdiv = sclk / (2 * baud_rate) - 1;
-	/* The actual uart baud rate of devices vary between +/-2%. The sport
-	 * RX sample rate should be faster than the double of the worst case,
-	 * otherwise, wrong data are received. So, set sport RX clock to be
-	 * 3% faster.
-	 */
-	rclkdiv = sclk / (2 * baud_rate * 2 * 97 / 100) - 1;
-	SPORT_PUT_TCLKDIV(up, tclkdiv);
-	SPORT_PUT_RCLKDIV(up, rclkdiv);
-	SSYNC();
-	pr_debug("%s sclk:%d, baud_rate:%d, tclkdiv:%d, rclkdiv:%d\n",
-			__func__, sclk, baud_rate, tclkdiv, rclkdiv);
-
-	return 0;
-}
-
-static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-	struct tty_port *port = &up->port.state->port;
-	unsigned int ch;
-
-	spin_lock(&up->port.lock);
-
-	while (SPORT_GET_STAT(up) & RXNE) {
-		ch = rx_one_byte(up);
-		up->port.icount.rx++;
-
-		if (!uart_handle_sysrq_char(&up->port, ch))
-			tty_insert_flip_char(port, ch, TTY_NORMAL);
-	}
-
-	spin_unlock(&up->port.lock);
-
-	/* XXX this won't deadlock with lowlat? */
-	tty_flip_buffer_push(port);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t sport_uart_tx_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-
-	spin_lock(&up->port.lock);
-	sport_uart_tx_chars(up);
-	spin_unlock(&up->port.lock);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-	unsigned int stat = SPORT_GET_STAT(up);
-
-	spin_lock(&up->port.lock);
-
-	/* Overflow in RX FIFO */
-	if (stat & ROVF) {
-		up->port.icount.overrun++;
-		tty_insert_flip_char(&up->port.state->port, 0, TTY_OVERRUN);
-		SPORT_PUT_STAT(up, ROVF); /* Clear ROVF bit */
-	}
-	/* These should not happen */
-	if (stat & (TOVF | TUVF | RUVF)) {
-		pr_err("SPORT Error:%s %s %s\n",
-		       (stat & TOVF) ? "TX overflow" : "",
-		       (stat & TUVF) ? "TX underflow" : "",
-		       (stat & RUVF) ? "RX underflow" : "");
-		SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-		SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) & ~RSPEN);
-	}
-	SSYNC();
-
-	spin_unlock(&up->port.lock);
-	/* XXX we don't push the overrun bit to TTY? */
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-static unsigned int sport_get_mctrl(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	if (up->cts_pin < 0)
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-
-	/* CTS PIN is negative assertive. */
-	if (SPORT_UART_GET_CTS(up))
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-	else
-		return TIOCM_DSR | TIOCM_CAR;
-}
-
-static void sport_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	if (up->rts_pin < 0)
-		return;
-
-	/* RTS PIN is negative assertive. */
-	if (mctrl & TIOCM_RTS)
-		SPORT_UART_ENABLE_RTS(up);
-	else
-		SPORT_UART_DISABLE_RTS(up);
-}
-
-/*
- * Handle any change of modem status signal.
- */
-static irqreturn_t sport_mctrl_cts_int(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)dev_id;
-	unsigned int status;
-
-	status = sport_get_mctrl(&up->port);
-	uart_handle_cts_change(&up->port, status & TIOCM_CTS);
-
-	return IRQ_HANDLED;
-}
-#else
-static unsigned int sport_get_mctrl(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-	return TIOCM_CTS | TIOCM_CD | TIOCM_DSR;
-}
-
-static void sport_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	pr_debug("%s enter\n", __func__);
-}
-#endif
-
-/* Reqeust IRQ, Setup clock */
-static int sport_startup(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	int ret;
-
-	pr_debug("%s enter\n", __func__);
-	ret = request_irq(up->port.irq, sport_uart_rx_irq, 0,
-		"SPORT_UART_RX", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT RX interrupt\n");
-		return ret;
-	}
-
-	ret = request_irq(up->port.irq+1, sport_uart_tx_irq, 0,
-		"SPORT_UART_TX", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT TX interrupt\n");
-		goto fail1;
-	}
-
-	ret = request_irq(up->err_irq, sport_uart_err_irq, 0,
-		"SPORT_UART_STATUS", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT status interrupt\n");
-		goto fail2;
-	}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	if (up->cts_pin >= 0) {
-		if (request_irq(gpio_to_irq(up->cts_pin),
-			sport_mctrl_cts_int,
-			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
-			0, "BFIN_SPORT_UART_CTS", up)) {
-			up->cts_pin = -1;
-			dev_info(port->dev, "Unable to attach BlackFin UART over SPORT CTS interrupt. So, disable it.\n");
-		}
-	}
-	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;
- fail2:
-	free_irq(up->port.irq+1, up);
- fail1:
-	free_irq(up->port.irq, up);
-
-	return ret;
-}
-
-/*
- * sport_uart_tx_chars
- *
- * ret 1 means need to enable sport.
- * ret 0 means do nothing.
- */
-static int sport_uart_tx_chars(struct sport_uart_port *up)
-{
-	struct circ_buf *xmit = &up->port.state->xmit;
-
-	if (SPORT_GET_STAT(up) & TXF)
-		return 0;
-
-	if (up->port.x_char) {
-		tx_one_byte(up, up->port.x_char);
-		up->port.icount.tx++;
-		up->port.x_char = 0;
-		return 1;
-	}
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		/* The waiting loop to stop SPORT TX from TX interrupt is
-		 * too long. This may block SPORT RX interrupts and cause
-		 * RX FIFO overflow. So, do stop sport TX only after the last
-		 * char in TX FIFO is moved into the shift register.
-		 */
-		if (SPORT_GET_STAT(up) & TXHRE)
-			sport_stop_tx(&up->port);
-		return 0;
-	}
-
-	while(!(SPORT_GET_STAT(up) & TXF) && !uart_circ_empty(xmit)) {
-		tx_one_byte(up, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE -1);
-		up->port.icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&up->port);
-
-	return 1;
-}
-
-static unsigned int sport_tx_empty(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	unsigned int stat;
-
-	stat = SPORT_GET_STAT(up);
-	pr_debug("%s stat:%04x\n", __func__, stat);
-	if (stat & TXHRE) {
-		return TIOCSER_TEMT;
-	} else
-		return 0;
-}
-
-static void sport_stop_tx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-
-	if (!(SPORT_GET_TCR1(up) & TSPEN))
-		return;
-
-	/* Although the hold register is empty, last byte is still in shift
-	 * register and not sent out yet. So, put a dummy data into TX FIFO.
-	 * Then, sport tx stops when last byte is shift out and the dummy
-	 * data is moved into the shift register.
-	 */
-	SPORT_PUT_TX(up, 0xffff);
-	while (!(SPORT_GET_STAT(up) & TXHRE))
-		cpu_relax();
-
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-	SSYNC();
-
-	return;
-}
-
-static void sport_start_tx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-
-	/* Write data into SPORT FIFO before enable SPROT to transmit */
-	if (sport_uart_tx_chars(up)) {
-		/* Enable transmit, then an interrupt will generated */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-		SSYNC();
-	}
-
-	pr_debug("%s exit\n", __func__);
-}
-
-static void sport_stop_rx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	/* Disable sport to stop rx */
-	SPORT_PUT_RCR1(up, (SPORT_GET_RCR1(up) & ~RSPEN));
-	SSYNC();
-}
-
-static void sport_break_ctl(struct uart_port *port, int break_state)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
-static void sport_shutdown(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	dev_dbg(port->dev, "%s enter\n", __func__);
-
-	/* Disable sport */
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-	SPORT_PUT_RCR1(up, (SPORT_GET_RCR1(up) & ~RSPEN));
-	SSYNC();
-
-	free_irq(up->port.irq, up);
-	free_irq(up->port.irq+1, up);
-	free_irq(up->err_irq, up);
-#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
-}
-
-static const char *sport_type(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	return up->port.type == PORT_BFIN_SPORT ? "BFIN-SPORT-UART" : NULL;
-}
-
-static void sport_release_port(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
-static int sport_request_port(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-	return 0;
-}
-
-static void sport_config_port(struct uart_port *port, int flags)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	up->port.type = PORT_BFIN_SPORT;
-}
-
-static int sport_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	pr_debug("%s enter\n", __func__);
-	return 0;
-}
-
-static void sport_set_termios(struct uart_port *port,
-		struct ktermios *termios, struct ktermios *old)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	unsigned long flags;
-	int i;
-
-	pr_debug("%s enter, c_cflag:%08x\n", __func__, termios->c_cflag);
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	if (old == NULL && up->cts_pin != -1)
-		termios->c_cflag |= CRTSCTS;
-	else if (up->cts_pin == -1)
-		termios->c_cflag &= ~CRTSCTS;
-#endif
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS8:
-		up->csize = 8;
-		break;
-	case CS7:
-		up->csize = 7;
-		break;
-	case CS6:
-		up->csize = 6;
-		break;
-	case CS5:
-		up->csize = 5;
-		break;
-	default:
-		pr_warn("requested word length not supported\n");
-		break;
-	}
-
-	if (termios->c_cflag & CSTOPB) {
-		up->stopb = 1;
-	}
-	if (termios->c_cflag & PARENB) {
-		pr_warn("PAREN bit is not supported yet\n");
-		/* up->parib = 1; */
-	}
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	port->read_status_mask = 0;
-
-	/*
-	 * Characters to ignore
-	 */
-	port->ignore_status_mask = 0;
-
-	/* RX extract mask */
-	up->rxmask = 0x01 | (((up->csize + up->stopb) * 2 - 1) << 0x8);
-	/* TX masks, 8 bit data and 1 bit stop for example:
-	 * mask1 = b#0111111110
-	 * mask2 = b#1000000000
-	 */
-	for (i = 0, up->txmask1 = 0; i < up->csize; i++)
-		up->txmask1 |= (1<<i);
-	up->txmask2 = (1<<i);
-	if (up->stopb) {
-		++i;
-		up->txmask2 |= (1<<i);
-	}
-	up->txmask1 <<= 1;
-	up->txmask2 <<= 1;
-	/* uart baud rate */
-	port->uartclk = uart_get_baud_rate(port, termios, old, 0, get_sclk()/16);
-
-	/* Disable UART */
-	SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-	SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) & ~RSPEN);
-
-	sport_uart_setup(up, up->csize + up->stopb, port->uartclk);
-
-	/* driver TX line high after config, one dummy data is
-	 * necessary to stop sport after shift one byte
-	 */
-	SPORT_PUT_TX(up, 0xffff);
-	SPORT_PUT_TX(up, 0xffff);
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-	SSYNC();
-	while (!(SPORT_GET_STAT(up) & TXHRE))
-		cpu_relax();
-	SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-	SSYNC();
-
-	/* Port speed changed, update the per-port timeout. */
-	uart_update_timeout(port, termios->c_cflag, port->uartclk);
-
-	/* Enable sport rx */
-	SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) | RSPEN);
-	SSYNC();
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static const struct uart_ops sport_uart_ops = {
-	.tx_empty	= sport_tx_empty,
-	.set_mctrl	= sport_set_mctrl,
-	.get_mctrl	= sport_get_mctrl,
-	.stop_tx	= sport_stop_tx,
-	.start_tx	= sport_start_tx,
-	.stop_rx	= sport_stop_rx,
-	.break_ctl	= sport_break_ctl,
-	.startup	= sport_startup,
-	.shutdown	= sport_shutdown,
-	.set_termios	= sport_set_termios,
-	.type		= sport_type,
-	.release_port	= sport_release_port,
-	.request_port	= sport_request_port,
-	.config_port	= sport_config_port,
-	.verify_port	= sport_verify_port,
-};
-
-#define BFIN_SPORT_UART_MAX_PORTS 4
-
-static struct sport_uart_port *bfin_sport_uart_ports[BFIN_SPORT_UART_MAX_PORTS];
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-#define CLASS_BFIN_SPORT_CONSOLE	"bfin-sport-console"
-
-static int __init
-sport_uart_console_setup(struct console *co, char *options)
-{
-	struct sport_uart_port *up;
-	int baud = 57600;
-	int bits = 8;
-	int parity = 'n';
-# ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	int flow = 'r';
-# else
-	int flow = 'n';
-# endif
-
-	/* Check whether an invalid uart number has been specified */
-	if (co->index < 0 || co->index >= BFIN_SPORT_UART_MAX_PORTS)
-		return -ENODEV;
-
-	up = bfin_sport_uart_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 void sport_uart_console_putchar(struct uart_port *port, int ch)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	while (SPORT_GET_STAT(up) & TXF)
-		barrier();
-
-	tx_one_byte(up, ch);
-}
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-sport_uart_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct sport_uart_port *up = bfin_sport_uart_ports[co->index];
-	unsigned long flags;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	if (SPORT_GET_TCR1(up) & TSPEN)
-		uart_console_write(&up->port, s, count, sport_uart_console_putchar);
-	else {
-		/* dummy data to start sport */
-		while (SPORT_GET_STAT(up) & TXF)
-			barrier();
-		SPORT_PUT_TX(up, 0xffff);
-		/* Enable transmit, then an interrupt will generated */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-		SSYNC();
-
-		uart_console_write(&up->port, s, count, sport_uart_console_putchar);
-
-		/* Although the hold register is empty, last byte is still in shift
-		 * register and not sent out yet. So, put a dummy data into TX FIFO.
-		 * Then, sport tx stops when last byte is shift out and the dummy
-		 * data is moved into the shift register.
-		 */
-		while (SPORT_GET_STAT(up) & TXF)
-			barrier();
-		SPORT_PUT_TX(up, 0xffff);
-		while (!(SPORT_GET_STAT(up) & TXHRE))
-			barrier();
-
-		/* Stop sport tx transfer */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-		SSYNC();
-	}
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static struct uart_driver sport_uart_reg;
-
-static struct console sport_uart_console = {
-	.name		= DEVICE_NAME,
-	.write		= sport_uart_console_write,
-	.device		= uart_console_device,
-	.setup		= sport_uart_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &sport_uart_reg,
-};
-
-#define SPORT_UART_CONSOLE	(&sport_uart_console)
-#else
-#define SPORT_UART_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_BFIN_SPORT_CONSOLE */
-
-
-static struct uart_driver sport_uart_reg = {
-	.owner		= THIS_MODULE,
-	.driver_name	= DRV_NAME,
-	.dev_name	= DEVICE_NAME,
-	.major		= 204,
-	.minor		= 84,
-	.nr		= BFIN_SPORT_UART_MAX_PORTS,
-	.cons		= SPORT_UART_CONSOLE,
-};
-
-#ifdef CONFIG_PM
-static int sport_uart_suspend(struct device *dev)
-{
-	struct sport_uart_port *sport = dev_get_drvdata(dev);
-
-	dev_dbg(dev, "%s enter\n", __func__);
-	if (sport)
-		uart_suspend_port(&sport_uart_reg, &sport->port);
-
-	return 0;
-}
-
-static int sport_uart_resume(struct device *dev)
-{
-	struct sport_uart_port *sport = dev_get_drvdata(dev);
-
-	dev_dbg(dev, "%s enter\n", __func__);
-	if (sport)
-		uart_resume_port(&sport_uart_reg, &sport->port);
-
-	return 0;
-}
-
-static const struct dev_pm_ops bfin_sport_uart_dev_pm_ops = {
-	.suspend	= sport_uart_suspend,
-	.resume		= sport_uart_resume,
-};
-#endif
-
-static int sport_uart_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	struct sport_uart_port *sport;
-	int ret = 0;
-
-	dev_dbg(&pdev->dev, "%s enter\n", __func__);
-
-	if (pdev->id < 0 || pdev->id >= BFIN_SPORT_UART_MAX_PORTS) {
-		dev_err(&pdev->dev, "Wrong sport uart platform device id.\n");
-		return -ENOENT;
-	}
-
-	if (bfin_sport_uart_ports[pdev->id] == NULL) {
-		bfin_sport_uart_ports[pdev->id] =
-			kzalloc(sizeof(struct sport_uart_port), GFP_KERNEL);
-		sport = bfin_sport_uart_ports[pdev->id];
-		if (!sport) {
-			dev_err(&pdev->dev,
-				"Fail to malloc sport_uart_port\n");
-			return -ENOMEM;
-		}
-
-		ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
-						DRV_NAME);
-		if (ret) {
-			dev_err(&pdev->dev,
-				"Fail to request SPORT peripherals\n");
-			goto out_error_free_mem;
-		}
-
-		spin_lock_init(&sport->port.lock);
-		sport->port.fifosize  = SPORT_TX_FIFO_SIZE,
-		sport->port.ops       = &sport_uart_ops;
-		sport->port.line      = pdev->id;
-		sport->port.iotype    = UPIO_MEM;
-		sport->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;
-		}
-
-		sport->port.membase = ioremap(res->start, resource_size(res));
-		if (!sport->port.membase) {
-			dev_err(&pdev->dev, "Cannot map sport IO\n");
-			ret = -ENXIO;
-			goto out_error_free_peripherals;
-		}
-		sport->port.mapbase = res->start;
-
-		sport->port.irq = platform_get_irq(pdev, 0);
-		if ((int)sport->port.irq < 0) {
-			dev_err(&pdev->dev, "No sport RX/TX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-
-		sport->err_irq = platform_get_irq(pdev, 1);
-		if (sport->err_irq < 0) {
-			dev_err(&pdev->dev, "No sport status IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-		if (res == NULL)
-			sport->cts_pin = -1;
-		else
-			sport->cts_pin = res->start;
-
-		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
-		if (res == NULL)
-			sport->rts_pin = -1;
-		else
-			sport->rts_pin = res->start;
-#endif
-	}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-	if (!is_early_platform_device(pdev)) {
-#endif
-		sport = bfin_sport_uart_ports[pdev->id];
-		sport->port.dev = &pdev->dev;
-		dev_set_drvdata(&pdev->dev, sport);
-		ret = uart_add_one_port(&sport_uart_reg, &sport->port);
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-	}
-#endif
-	if (!ret)
-		return 0;
-
-	if (sport) {
-out_error_unmap:
-		iounmap(sport->port.membase);
-out_error_free_peripherals:
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-out_error_free_mem:
-		kfree(sport);
-		bfin_sport_uart_ports[pdev->id] = NULL;
-	}
-
-	return ret;
-}
-
-static int sport_uart_remove(struct platform_device *pdev)
-{
-	struct sport_uart_port *sport = platform_get_drvdata(pdev);
-
-	dev_dbg(&pdev->dev, "%s enter\n", __func__);
-	dev_set_drvdata(&pdev->dev, NULL);
-
-	if (sport) {
-		uart_remove_one_port(&sport_uart_reg, &sport->port);
-		iounmap(sport->port.membase);
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-		kfree(sport);
-		bfin_sport_uart_ports[pdev->id] = NULL;
-	}
-
-	return 0;
-}
-
-static struct platform_driver sport_uart_driver = {
-	.probe		= sport_uart_probe,
-	.remove		= sport_uart_remove,
-	.driver		= {
-		.name	= DRV_NAME,
-#ifdef CONFIG_PM
-		.pm	= &bfin_sport_uart_dev_pm_ops,
-#endif
-	},
-};
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-static struct early_platform_driver early_sport_uart_driver __initdata = {
-	.class_str = CLASS_BFIN_SPORT_CONSOLE,
-	.pdrv = &sport_uart_driver,
-	.requested_id = EARLY_PLATFORM_ID_UNSET,
-};
-
-static int __init sport_uart_rs_console_init(void)
-{
-	early_platform_driver_register(&early_sport_uart_driver, DRV_NAME);
-
-	early_platform_driver_probe(CLASS_BFIN_SPORT_CONSOLE,
-		BFIN_SPORT_UART_MAX_PORTS, 0);
-
-	register_console(&sport_uart_console);
-
-	return 0;
-}
-console_initcall(sport_uart_rs_console_init);
-#endif
-
-static int __init sport_uart_init(void)
-{
-	int ret;
-
-	pr_info("Blackfin uart over sport driver\n");
-
-	ret = uart_register_driver(&sport_uart_reg);
-	if (ret) {
-		pr_err("failed to register %s:%d\n",
-				sport_uart_reg.driver_name, ret);
-		return ret;
-	}
-
-	ret = platform_driver_register(&sport_uart_driver);
-	if (ret) {
-		pr_err("failed to register sport uart driver:%d\n", ret);
-		uart_unregister_driver(&sport_uart_reg);
-	}
-
-	return ret;
-}
-module_init(sport_uart_init);
-
-static void __exit sport_uart_exit(void)
-{
-	platform_driver_unregister(&sport_uart_driver);
-	uart_unregister_driver(&sport_uart_reg);
-}
-module_exit(sport_uart_exit);
-
-MODULE_AUTHOR("Sonic Zhang, Roy Huang");
-MODULE_DESCRIPTION("Blackfin serial over SPORT driver");
-MODULE_LICENSE("GPL");

drivers/tty/serial/bfin_sport_uart.h

-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Sport Emulated UART Driver
- *
- * Copyright 2006-2008 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-/*
- * This driver and the hardware supported are in term of EE-191 of ADI.
- * http://www.analog.com/static/imported-files/application_notes/EE191.pdf 
- * This application note describe how to implement a UART on a Sharc DSP,
- * but this driver is implemented on Blackfin Processor.
- * Transmit Frame Sync is not used by this driver to transfer data out.
- */
-
-#ifndef _BFIN_SPORT_UART_H
-#define _BFIN_SPORT_UART_H
-
-#define OFFSET_TCR1		0x00	/* Transmit Configuration 1 Register */
-#define OFFSET_TCR2		0x04	/* Transmit Configuration 2 Register */
-#define OFFSET_TCLKDIV		0x08	/* Transmit Serial Clock Divider Register */
-#define OFFSET_TFSDIV		0x0C	/* Transmit Frame Sync Divider Register */
-#define OFFSET_TX		0x10	/* Transmit Data Register		*/
-#define OFFSET_RX		0x18	/* Receive Data Register		*/
-#define OFFSET_RCR1		0x20	/* Receive Configuration 1 Register	*/
-#define OFFSET_RCR2		0x24	/* Receive Configuration 2 Register	*/
-#define OFFSET_RCLKDIV		0x28	/* Receive Serial Clock Divider Register */
-#define OFFSET_RFSDIV		0x2c	/* Receive Frame Sync Divider Register */
-#define OFFSET_STAT		0x30	/* Status Register			*/
-
-#define SPORT_GET_TCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_TCR1))
-#define SPORT_GET_TCR2(sport)		bfin_read16(((sport)->port.membase + OFFSET_TCR2))
-#define SPORT_GET_TCLKDIV(sport)	bfin_read16(((sport)->port.membase + OFFSET_TCLKDIV))
-#define SPORT_GET_TFSDIV(sport)		bfin_read16(((sport)->port.membase + OFFSET_TFSDIV))
-#define SPORT_GET_TX(sport)		bfin_read16(((sport)->port.membase + OFFSET_TX))
-#define SPORT_GET_RX(sport)		bfin_read16(((sport)->port.membase + OFFSET_RX))
-/*
- * If another interrupt fires while doing a 32-bit read from RX FIFO,
- * a fake RX underflow error will be generated.  So disable interrupts
- * to prevent interruption while reading the FIFO.
- */
-#define SPORT_GET_RX32(sport) \
-({ \
-	unsigned int __ret; \
-	unsigned long flags; \
-	if (ANOMALY_05000473) \
-		local_irq_save(flags); \
-	__ret = bfin_read32((sport)->port.membase + OFFSET_RX); \
-	if (ANOMALY_05000473) \
-		local_irq_restore(flags); \
-	__ret; \
-})
-#define SPORT_GET_RCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR1))
-#define SPORT_GET_RCR2(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR2))
-#define SPORT_GET_RCLKDIV(sport)	bfin_read16(((sport)->port.membase + OFFSET_RCLKDIV))
-#define SPORT_GET_RFSDIV(sport)		bfin_read16(((sport)->port.membase + OFFSET_RFSDIV))
-#define SPORT_GET_STAT(sport)		bfin_read16(((sport)->port.membase + OFFSET_STAT))
-
-#define SPORT_PUT_TCR1(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCR1), v)
-#define SPORT_PUT_TCR2(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCR2), v)
-#define SPORT_PUT_TCLKDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCLKDIV), v)
-#define SPORT_PUT_TFSDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TFSDIV), v)
-#define SPORT_PUT_TX(sport, v)		bfin_write16(((sport)->port.membase + OFFSET_TX), v)
-#define SPORT_PUT_RX(sport, v)		bfin_write16(((sport)->port.membase + OFFSET_RX), v)
-#define SPORT_PUT_RCR1(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCR1), v)
-#define SPORT_PUT_RCR2(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCR2), v)
-#define SPORT_PUT_RCLKDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCLKDIV), v)
-#define SPORT_PUT_RFSDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RFSDIV), v)
-#define SPORT_PUT_STAT(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_STAT), v)
-
-#define SPORT_TX_FIFO_SIZE	8
-
-#define SPORT_UART_GET_CTS(x)		gpio_get_value(x->cts_pin)
-#define SPORT_UART_DISABLE_RTS(x)	gpio_set_value(x->rts_pin, 1)
-#define SPORT_UART_ENABLE_RTS(x)	gpio_set_value(x->rts_pin, 0)
-
-#if defined(CONFIG_SERIAL_BFIN_SPORT0_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT1_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT2_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT3_UART_CTSRTS)
-# define CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-#endif
-
-#endif /* _BFIN_SPORT_UART_H */

drivers/tty/serial/bfin_uart.c

-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Serial Driver
- *
- * Copyright 2006-2011 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#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>
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/platform_device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/gpio.h>
-#include <linux/irq.h>
-#include <linux/kgdb.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/portmux.h>
-#include <asm/cacheflush.h>
-#include <asm/dma.h>
-#include <asm/bfin_serial.h>
-
-#ifdef CONFIG_SERIAL_BFIN_MODULE
-# undef CONFIG_EARLY_PRINTK
-#endif
-
-/* UART name and device definitions */
-#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];
-
-#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-
-# ifndef CONFIG_SERIAL_BFIN_PIO
-#  error KGDB only support UART in PIO mode.
-# endif
-
-static int kgdboc_port_line;
-static int kgdboc_break_enabled;
-#endif
-/*
- * Setup for console. Argument comes from the menuconfig
- */
-#define DMA_RX_XCOUNT		512
-#define DMA_RX_YCOUNT		(PAGE_SIZE / DMA_RX_XCOUNT)
-
-#define DMA_RX_FLUSH_JIFFIES	(HZ / 50)
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart);
-#else
-static void bfin_serial_tx_chars(struct bfin_serial_port *uart);
-#endif
-
-static void bfin_serial_reset_irda(struct uart_port *port);
-
-#if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(SERIAL_BFIN_HARD_CTSRTS)
-static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	if (uart->cts_pin < 0)
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-
-	/* CTS PIN is negative assertive. */
-	if (UART_GET_CTS(uart))
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-	else
-		return TIOCM_DSR | TIOCM_CAR;
-}
-
-static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	if (uart->rts_pin < 0)
-		return;
-
-	/* RTS PIN is negative assertive. */
-	if (mctrl & TIOCM_RTS)
-		UART_ENABLE_RTS(uart);
-	else
-		UART_DISABLE_RTS(uart);
-}
-
-/*
- * Handle any change of modem status signal.
- */
-static irqreturn_t bfin_serial_mctrl_cts_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-	struct uart_port *uport = &uart->port;
-	unsigned int status = bfin_serial_get_mctrl(uport);
-#ifdef SERIAL_BFIN_HARD_CTSRTS
-
-	UART_CLEAR_SCTS(uart);
-	if (uport->hw_stopped) {
-		if (status) {
-			uport->hw_stopped = 0;
-			uart_write_wakeup(uport);
-		}
-	} else {
-		if (!status)
-			uport->hw_stopped = 1;
-	}
-#else
-	uart_handle_cts_change(uport, status & TIOCM_CTS);
-#endif
-
-	return IRQ_HANDLED;
-}
-#else
-static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
-{
-	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-}
-
-static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-}
-#endif
-
-/*
- * interrupts are disabled on entry
- */
-static void bfin_serial_stop_tx(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	struct circ_buf *xmit = &uart->port.state->xmit;
-#endif
-
-	while (!(UART_GET_LSR(uart) & TEMT))
-		cpu_relax();
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	disable_dma(uart->tx_dma_channel);
-	xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
-	uart->port.icount.tx += uart->tx_count;
-	uart->tx_count = 0;
-	uart->tx_done = 1;
-#else
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
-	/* Clear TFI bit */
-	UART_PUT_LSR(uart, TFI);
-#endif
-	UART_CLEAR_IER(uart, ETBEI);
-#endif
-}
-
-/*
- * port is locked and interrupts are disabled
- */
-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;
-
-	/*
-	 * To avoid losting RX interrupt, we reset IR function
-	 * before sending data.
-	 */
-	if (tty->termios.c_line == N_IRDA)
-		bfin_serial_reset_irda(port);
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	if (uart->tx_done)
-		bfin_serial_dma_tx_chars(uart);
-#else
-	UART_SET_IER(uart, ETBEI);
-	bfin_serial_tx_chars(uart);
-#endif
-}
-
-/*
- * Interrupts are enabled
- */
-static void bfin_serial_stop_rx(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	UART_CLEAR_IER(uart, ERBFI);
-}
-
-#if ANOMALY_05000363 && defined(CONFIG_SERIAL_BFIN_PIO)
-# define UART_GET_ANOMALY_THRESHOLD(uart)    ((uart)->anomaly_threshold)
-# define UART_SET_ANOMALY_THRESHOLD(uart, v) ((uart)->anomaly_threshold = (v))
-#else
-# define UART_GET_ANOMALY_THRESHOLD(uart)    0
-# define UART_SET_ANOMALY_THRESHOLD(uart, v)
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_PIO
-static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
-{
-	unsigned int status, ch, flg;
-	static u64 anomaly_start;
-
-	status = UART_GET_LSR(uart);
-	UART_CLEAR_LSR(uart);
-
-	ch = UART_GET_CHAR(uart);
-	uart->port.icount.rx++;
-
-#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	if (kgdb_connected && kgdboc_port_line == uart->port.line
-		&& kgdboc_break_enabled)
-		if (ch == 0x3) {/* Ctrl + C */
-			kgdb_breakpoint();
-			return;
-		}
-
-	if (!uart->port.state)
-		return;
-#endif
-	if (ANOMALY_05000363) {
-		/* The BF533 (and BF561) family of processors have a nice anomaly
-		 * where they continuously generate characters for a "single" break.
-		 * We have to basically ignore this flood until the "next" valid
-		 * character comes across.  Due to the nature of the flood, it is
-		 * not possible to reliably catch bytes that are sent too quickly
-		 * after this break.  So application code talking to the Blackfin
-		 * which sends a break signal must allow at least 1.5 character
-		 * times after the end of the break for things to stabilize.  This
-		 * timeout was picked as it must absolutely be larger than 1
-		 * character time +/- some percent.  So 1.5 sounds good.  All other
-		 * Blackfin families operate properly.  Woo.
-		 */
-		if (anomaly_start > 0) {
-			u64 curr, nsecs, threshold_ns;
-
-			if ((~ch & (~ch + 1)) & 0xff)
-				goto known_good_char;
-
-			curr = ktime_get_ns();
-			nsecs = curr - anomaly_start;
-			if (nsecs >> 32)
-				goto known_good_char;
-
-			threshold_ns = UART_GET_ANOMALY_THRESHOLD(uart)
-							* NSEC_PER_USEC;
-			if (nsecs > threshold_ns)
-				goto known_good_char;
-
-			if (ch)
-				anomaly_start = 0;
-			else
-				anomaly_start = curr;
-
-			return;
-
- known_good_char:
-			status &= ~BI;
-			anomaly_start = 0;
-		}
-	}
-
-	if (status & BI) {
-		if (ANOMALY_05000363)
-			if (bfin_revid() < 5)
-				anomaly_start = ktime_get_ns();
-		uart->port.icount.brk++;
-		if (uart_handle_break(&uart->port))
-			goto ignore_char;
-		status &= ~(PE | FE);
-	}
-	if (status & PE)
-		uart->port.icount.parity++;
-	if (status & OE)
-		uart->port.icount.overrun++;
-	if (status & FE)
-		uart->port.icount.frame++;
-
-	status &= uart->port.read_status_mask;
-
-	if (status & BI)
-		flg = TTY_BREAK;
-	else if (status & PE)
-		flg = TTY_PARITY;
-	else if (status & FE)
-		flg = TTY_FRAME;
-	else
-		flg = TTY_NORMAL;
-
-	if (uart_handle_sysrq_char(&uart->port, ch))
-		goto ignore_char;
-
-	uart_insert_char(&uart->port, status, OE, ch, flg);
-
- ignore_char:
-	tty_flip_buffer_push(&uart->port.state->port);
-}
-
-static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
-{
-	struct circ_buf *xmit = &uart->port.state->xmit;
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
-		/* Clear TFI bit */
-		UART_PUT_LSR(uart, TFI);
-#endif
-		/* Anomaly notes:
-		 *  05000215 -	we always clear ETBEI within last UART TX
-		 *		interrupt to end a string. It is always set
-		 *		when start a new tx.
-		 */
-		UART_CLEAR_IER(uart, ETBEI);
-		return;
-	}
-
-	if (uart->port.x_char) {
-		UART_PUT_CHAR(uart, uart->port.x_char);
-		uart->port.icount.tx++;
-		uart->port.x_char = 0;
-	}
-
-	while ((UART_GET_LSR(uart) & THRE) && xmit->tail != xmit->head) {
-		UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		uart->port.icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&uart->port);
-}
-
-static irqreturn_t bfin_serial_rx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-
-	while (UART_GET_LSR(uart) & DR)
-		bfin_serial_rx_chars(uart);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-
-	spin_lock(&uart->port.lock);
-	if (UART_GET_LSR(uart) & THRE)
-		bfin_serial_tx_chars(uart);
-	spin_unlock(&uart->port.lock);
-
-	return IRQ_HANDLED;
-}
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
-{
-	struct circ_buf *xmit = &uart->port.state->xmit;
-
-	uart->tx_done = 0;
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-		uart->tx_count = 0;
-		uart->tx_done = 1;
-		return;
-	}
-
-	if (uart->port.x_char) {
-		UART_PUT_CHAR(uart, uart->port.x_char);
-		uart->port.icount.tx++;
-		uart->port.x_char = 0;
-	}
-
-	uart->tx_count = CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE);
-	if (uart->tx_count > (UART_XMIT_SIZE - xmit->tail))
-		uart->tx_count = UART_XMIT_SIZE - xmit->tail;
-	blackfin_dcache_flush_range((unsigned long)(xmit->buf+xmit->tail),
-					(unsigned long)(xmit->buf+xmit->tail+uart->tx_count));
-	set_dma_config(uart->tx_dma_channel,
-		set_bfin_dma_config(DIR_READ, DMA_FLOW_STOP,
-			INTR_ON_BUF,
-			DIMENSION_LINEAR,
-			DATA_SIZE_8,
-			DMA_SYNC_RESTART));
-	set_dma_start_addr(uart->tx_dma_channel, (unsigned long)(xmit->buf+xmit->tail));
-	set_dma_x_count(uart->tx_dma_channel, uart->tx_count);
-	set_dma_x_modify(uart->tx_dma_channel, 1);
-	SSYNC();
-	enable_dma(uart->tx_dma_channel);
-
-	UART_SET_IER(uart, ETBEI);
-}
-
-static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
-{
-	int i, flg, status;
-
-	status = UART_GET_LSR(uart);
-	UART_CLEAR_LSR(uart);
-
-	uart->port.icount.rx +=
-		CIRC_CNT(uart->rx_dma_buf.head, uart->rx_dma_buf.tail,
-		UART_XMIT_SIZE);
-
-	if (status & BI) {
-		uart->port.icount.brk++;
-		if (uart_handle_break(&uart->port))
-			goto dma_ignore_char;
-		status &= ~(PE | FE);
-	}
-	if (status & PE)
-		uart->port.icount.parity++;
-	if (status & OE)
-		uart->port.icount.overrun++;
-	if (status & FE)
-		uart->port.icount.frame++;
-
-	status &= uart->port.read_status_mask;
-
-	if (status & BI)
-		flg = TTY_BREAK;
-	else if (status & PE)
-		flg = TTY_PARITY;
-	else if (status & FE)
-		flg = TTY_FRAME;
-	else
-		flg = TTY_NORMAL;
-
-	for (i = uart->rx_dma_buf.tail; ; i++) {
-		if (i >= UART_XMIT_SIZE)
-			i = 0;
-		if (i == uart->rx_dma_buf.head)
-			break;
-		if (!uart_handle_sysrq_char(&uart->port, uart->rx_dma_buf.buf[i]))
-			uart_insert_char(&uart->port, status, OE,
-				uart->rx_dma_buf.buf[i], flg);
-	}
-
- dma_ignore_char:
-	tty_flip_buffer_push(&uart->port.state->port);
-}
-
-void bfin_serial_rx_dma_timeout(struct timer_list *t)
-{
-	struct bfin_serial_port *uart = from_timer(uart, t, rx_dma_timer);
-	int x_pos, pos;
-	unsigned long flags;
-
-	dma_disable_irq_nosync(uart->rx_dma_channel);
-	spin_lock_irqsave(&uart->rx_lock, flags);
-
-	/* 2D DMA RX buffer ring is used. Because curr_y_count and
-	 * curr_x_count can't be read as an atomic operation,
-	 * curr_y_count should be read before curr_x_count. When
-	 * curr_x_count is read, curr_y_count may already indicate
-	 * next buffer line. But, the position calculated here is
-	 * still indicate the old line. The wrong position data may
-	 * be smaller than current buffer tail, which cause garbages
-	 * are received if it is not prohibit.
-	 */
-	uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
-	x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
-	uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows;
-	if (uart->rx_dma_nrows == DMA_RX_YCOUNT || x_pos == 0)
-		uart->rx_dma_nrows = 0;
-	x_pos = DMA_RX_XCOUNT - x_pos;
-	if (x_pos == DMA_RX_XCOUNT)
-		x_pos = 0;
-
-	pos = uart->rx_dma_nrows * DMA_RX_XCOUNT + x_pos;
-	/* Ignore receiving data if new position is in the same line of
-	 * current buffer tail and small.
-	 */
-	if (pos > uart->rx_dma_buf.tail ||
-		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {
-		uart->rx_dma_buf.head = pos;
-		bfin_serial_dma_rx_chars(uart);
-		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
-	}
-
-	spin_unlock_irqrestore(&uart->rx_lock, flags);
-	dma_enable_irq(uart->rx_dma_channel);
-
-	mod_timer(&(uart->rx_dma_timer), jiffies + DMA_RX_FLUSH_JIFFIES);
-}
-
-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;
-
-	spin_lock(&uart->port.lock);
-	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
-		disable_dma(uart->tx_dma_channel);
-		clear_dma_irqstat(uart->tx_dma_channel);
-		/* Anomaly notes:
-		 *  05000215 -	we always clear ETBEI within last UART TX
-		 *		interrupt to end a string. It is always set
-		 *		when start a new tx.
-		 */
-		UART_CLEAR_IER(uart, ETBEI);
-		uart->port.icount.tx += uart->tx_count;
-		if (!(xmit->tail == 0 && xmit->head == 0)) {
-			xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
-
-			if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-				uart_write_wakeup(&uart->port);
-		}
-
-		bfin_serial_dma_tx_chars(uart);
-	}
-
-	spin_unlock(&uart->port.lock);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-	unsigned int irqstat;
-	int x_pos, pos;
-
-	spin_lock(&uart->rx_lock);
-	irqstat = get_dma_curr_irqstat(uart->rx_dma_channel);
-	clear_dma_irqstat(uart->rx_dma_channel);
-
-	uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
-	x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
-	uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows;
-	if (uart->rx_dma_nrows == DMA_RX_YCOUNT || x_pos == 0)
-		uart->rx_dma_nrows = 0;
-
-	pos = uart->rx_dma_nrows * DMA_RX_XCOUNT;
-	if (pos > uart->rx_dma_buf.tail ||
-		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {
-		uart->rx_dma_buf.head = pos;
-		bfin_serial_dma_rx_chars(uart);
-		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
-	}
-
-	spin_unlock(&uart->rx_lock);
-
-	return IRQ_HANDLED;
-}
-#endif
-
-/*
- * Return TIOCSER_TEMT when transmitter is not busy.
- */
-static unsigned int bfin_serial_tx_empty(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int lsr;
-
-	lsr = UART_GET_LSR(uart);
-	if (lsr & TEMT)
-		return TIOCSER_TEMT;
-	else
-		return 0;
-}
-
-static void bfin_serial_break_ctl(struct uart_port *port, int break_state)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	u32 lcr = UART_GET_LCR(uart);
-	if (break_state)
-		lcr |= SB;
-	else
-		lcr &= ~SB;
-	UART_PUT_LCR(uart, lcr);
-	SSYNC();
-}
-
-static int bfin_serial_startup(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	dma_addr_t dma_handle;
-
-	if (request_dma(uart->rx_dma_channel, "BFIN_UART_RX") < 0) {
-		printk(KERN_NOTICE "Unable to attach Blackfin UART RX DMA channel\n");
-		return -EBUSY;
-	}
-
-	if (request_dma(uart->tx_dma_channel, "BFIN_UART_TX") < 0) {
-		printk(KERN_NOTICE "Unable to attach Blackfin UART TX DMA channel\n");
-		free_dma(uart->rx_dma_channel);
-		return -EBUSY;
-	}
-
-	set_dma_callback(uart->rx_dma_channel, bfin_serial_dma_rx_int, uart);
-	set_dma_callback(uart->tx_dma_channel, bfin_serial_dma_tx_int, uart);
-
-	uart->rx_dma_buf.buf = (unsigned char *)dma_alloc_coherent(NULL, PAGE_SIZE, &dma_handle, GFP_DMA);
-	uart->rx_dma_buf.head = 0;
-	uart->rx_dma_buf.tail = 0;
-	uart->rx_dma_nrows = 0;
-
-	set_dma_config(uart->rx_dma_channel,
-		set_bfin_dma_config(DIR_WRITE, DMA_FLOW_AUTO,
-				INTR_ON_ROW, DIMENSION_2D,
-				DATA_SIZE_8,
-				DMA_SYNC_RESTART));
-	set_dma_x_count(uart->rx_dma_channel, DMA_RX_XCOUNT);
-	set_dma_x_modify(uart->rx_dma_channel, 1);
-	set_dma_y_count(uart->rx_dma_channel, DMA_RX_YCOUNT);
-	set_dma_y_modify(uart->rx_dma_channel, 1);
-	set_dma_start_addr(uart->rx_dma_channel, (unsigned long)uart->rx_dma_buf.buf);
-	enable_dma(uart->rx_dma_channel);
-
-	uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
-	add_timer(&(uart->rx_dma_timer));
-#else
-# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	if (kgdboc_port_line == uart->port.line && kgdboc_break_enabled)
-		kgdboc_break_enabled = 0;
-	else {
-# endif
-	if (request_irq(uart->rx_irq, bfin_serial_rx_int, 0,
-	     "BFIN_UART_RX", uart)) {
-		printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
-		return -EBUSY;
-	}
-
-	if (request_irq
-	    (uart->tx_irq, bfin_serial_tx_int, 0,
-	     "BFIN_UART_TX", uart)) {
-		printk(KERN_NOTICE "Unable to attach BlackFin UART TX interrupt\n");
-		free_irq(uart->rx_irq, uart);
-		return -EBUSY;
-	}
-
-# ifdef CONFIG_BF54x
-	{
-		/*
-		 * UART2 and UART3 on BF548 share interrupt PINs and DMA
-		 * controllers with SPORT2 and SPORT3. UART rx and tx
-		 * interrupts are generated in PIO mode only when configure
-		 * their peripheral mapping registers properly, which means
-		 * request corresponding DMA channels in PIO mode as well.
-		 */
-		unsigned uart_dma_ch_rx, uart_dma_ch_tx;
-
-		switch (uart->rx_irq) {
-		case IRQ_UART3_RX:
-			uart_dma_ch_rx = CH_UART3_RX;
-			uart_dma_ch_tx = CH_UART3_TX;
-			break;
-		case IRQ_UART2_RX:
-			uart_dma_ch_rx = CH_UART2_RX;
-			uart_dma_ch_tx = CH_UART2_TX;
-			break;
-		default:
-			uart_dma_ch_rx = uart_dma_ch_tx = 0;
-			break;
-		}
-
-		if (uart_dma_ch_rx &&
-			request_dma(uart_dma_ch_rx, "BFIN_UART_RX") < 0) {
-			printk(KERN_NOTICE"Fail to attach UART interrupt\n");
-			free_irq(uart->rx_irq, uart);
-			free_irq(uart->tx_irq, uart);
-			return -EBUSY;
-		}
-		if (uart_dma_ch_tx &&
-			request_dma(uart_dma_ch_tx, "BFIN_UART_TX") < 0) {
-			printk(KERN_NOTICE "Fail to attach UART interrupt\n");
-			free_dma(uart_dma_ch_rx);
-			free_irq(uart->rx_irq, uart);
-			free_irq(uart->tx_irq, uart);
-			return -EBUSY;
-		}
-	}
-# endif
-# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	}
-# endif
-#endif
-
-#ifdef SERIAL_BFIN_CTSRTS
-	if (uart->cts_pin >= 0) {
-		if (request_irq(gpio_to_irq(uart->cts_pin),
-			bfin_serial_mctrl_cts_int,
-			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
-			0, "BFIN_UART_CTS", uart)) {
-			uart->cts_pin = -1;
-			pr_info("Unable to attach BlackFin UART CTS interrupt. So, disable it.\n");
-		}
-	}
-	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 SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0) {
-		if (request_irq(uart->status_irq, bfin_serial_mctrl_cts_int,
-			0, "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, UART_GET_MCR(uart) | ACTS);
-		UART_SET_IER(uart, EDSSI);
-	}
-#endif
-
-	UART_SET_IER(uart, ERBFI);
-	return 0;
-}
-
-static void bfin_serial_shutdown(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	disable_dma(uart->tx_dma_channel);
-	free_dma(uart->tx_dma_channel);
-	disable_dma(uart->rx_dma_channel);
-	free_dma(uart->rx_dma_channel);
-	del_timer(&(uart->rx_dma_timer));
-	dma_free_coherent(NULL, PAGE_SIZE, uart->rx_dma_buf.buf, 0);
-#else
-#ifdef CONFIG_BF54x
-	switch (uart->port.irq) {
-	case IRQ_UART3_RX:
-		free_dma(CH_UART3_RX);
-		free_dma(CH_UART3_TX);
-		break;
-	case IRQ_UART2_RX:
-		free_dma(CH_UART2_RX);
-		free_dma(CH_UART2_TX);
-		break;
-	default:
-		break;
-	}
-#endif
-	free_irq(uart->rx_irq, uart);
-	free_irq(uart->tx_irq, uart);
-#endif
-
-#ifdef 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 SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0)
-		free_irq(uart->status_irq, uart);
-#endif
-}
-
-static void
-bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
-		   struct ktermios *old)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned long flags;
-	unsigned int baud, quot;
-	unsigned int ier, lcr = 0;
-	unsigned long timeout;
-
-#ifdef SERIAL_BFIN_CTSRTS
-	if (old == NULL && uart->cts_pin != -1)
-		termios->c_cflag |= CRTSCTS;
-	else if (uart->cts_pin == -1)
-		termios->c_cflag &= ~CRTSCTS;
-#endif
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS8:
-		lcr = WLS(8);
-		break;
-	case CS7:
-		lcr = WLS(7);
-		break;
-	case CS6:
-		lcr = WLS(6);
-		break;
-	case CS5:
-		lcr = WLS(5);
-		break;
-	default:
-		printk(KERN_ERR "%s: word length not supported\n",
-			__func__);
-	}
-
-	/* Anomaly notes:
-	 *  05000231 -  STOP bit is always set to 1 whatever the user is set.
-	 */
-	if (termios->c_cflag & CSTOPB) {
-		if (ANOMALY_05000231)
-			printk(KERN_WARNING "STOP bits other than 1 is not "
-				"supported in case of anomaly 05000231.\n");
-		else
-			lcr |= STB;
-	}
-	if (termios->c_cflag & PARENB)
-		lcr |= PEN;
-	if (!(termios->c_cflag & PARODD))
-		lcr |= EPS;
-	if (termios->c_cflag & CMSPAR)
-		lcr |= STP;
-
-	spin_lock_irqsave(&uart->port.lock, flags);
-
-	port->read_status_mask = OE;
-	if (termios->c_iflag & INPCK)
-		port->read_status_mask |= (FE | PE);
-	if (termios->c_iflag & (IGNBRK | BRKINT | PARMRK))
-		port->read_status_mask |= BI;
-
-	/*
-	 * Characters to ignore
-	 */
-	port->ignore_status_mask = 0;
-	if (termios->c_iflag & IGNPAR)
-		port->ignore_status_mask |= FE | PE;
-	if (termios->c_iflag & IGNBRK) {
-		port->ignore_status_mask |= BI;
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns too (for real raw support).
-		 */
-		if (termios->c_iflag & IGNPAR)
-			port->ignore_status_mask |= OE;
-	}
-
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-	quot = uart_get_divisor(port, baud);
-
-	/* If discipline is not IRDA, apply ANOMALY_05000230 */
-	if (termios->c_line != N_IRDA)
-		quot -= ANOMALY_05000230;
-
-	UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
-
-	/* Wait till the transfer buffer is empty */
-	timeout = jiffies + msecs_to_jiffies(10);
-	while (UART_GET_GCTL(uart) & UCEN && !(UART_GET_LSR(uart) & TEMT))
-		if (time_after(jiffies, timeout)) {
-			dev_warn(port->dev, "timeout waiting for TX buffer empty\n");
-			break;
-		}
-
-	/* Disable UART */
-	ier = UART_GET_IER(uart);
-	UART_PUT_GCTL(uart, UART_GET_GCTL(uart) & ~UCEN);
-	UART_DISABLE_INTS(uart);
-
-	/* Set DLAB in LCR to Access CLK */
-	UART_SET_DLAB(uart);
-
-	UART_PUT_CLK(uart, quot);
-	SSYNC();
-
-	/* Clear DLAB in LCR to Access THR RBR IER */
-	UART_CLEAR_DLAB(uart);
-
-	UART_PUT_LCR(uart, (UART_GET_LCR(uart) & ~LCR_MASK) | lcr);
-
-	/* Enable UART */
-	UART_ENABLE_INTS(uart, ier);
-	UART_PUT_GCTL(uart, UART_GET_GCTL(uart) | UCEN);
-
-	/* Port speed changed, update the per-port timeout. */
-	uart_update_timeout(port, termios->c_cflag, baud);
-
-	spin_unlock_irqrestore(&uart->port.lock, flags);
-}
-
-static const char *bfin_serial_type(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	return uart->port.type == PORT_BFIN ? "BFIN-UART" : NULL;
-}
-
-/*
- * Release the memory region(s) being used by 'port'.
- */
-static void bfin_serial_release_port(struct uart_port *port)
-{
-}
-
-/*
- * Request the memory region(s) being used by 'port'.
- */
-static int bfin_serial_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void bfin_serial_config_port(struct uart_port *port, int flags)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	if (flags & UART_CONFIG_TYPE &&
-	    bfin_serial_request_port(&uart->port) == 0)
-		uart->port.type = PORT_BFIN;
-}
-
-/*
- * Verify the new serial_struct (for TIOCSSERIAL).
- * The only change we allow are to the flags and type, and
- * even then only between PORT_BFIN and PORT_UNKNOWN
- */
-static int
-bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	return 0;
-}
-
-/*
- * Enable the IrDA function if tty->ldisc.num is N_IRDA.
- * In other cases, disable IrDA function.
- */
-static void bfin_serial_set_ldisc(struct uart_port *port,
-				  struct ktermios *termios)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int val;
-
-	switch (termios->c_line) {
-	case N_IRDA:
-		val = UART_GET_GCTL(uart);
-		val |= (UMOD_IRDA | RPOLC);
-		UART_PUT_GCTL(uart, val);
-		break;
-	default:
-		val = UART_GET_GCTL(uart);
-		val &= ~(UMOD_MASK | RPOLC);
-		UART_PUT_GCTL(uart, val);
-	}
-}
-
-static void bfin_serial_reset_irda(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int val;
-
-	val = UART_GET_GCTL(uart);
-	val &= ~(UMOD_MASK | RPOLC);
-	UART_PUT_GCTL(uart, val);
-	SSYNC();
-	val |= (UMOD_IRDA | RPOLC);
-	UART_PUT_GCTL(uart, val);
-	SSYNC();
-}
-
-#ifdef CONFIG_CONSOLE_POLL
-/* Anomaly notes:
- *  05000099 -  Because we only use THRE in poll_put and DR in poll_get,
- *		losing other bits of UART_LSR is not a problem here.
- */
-static void bfin_serial_poll_put_char(struct uart_port *port, unsigned char chr)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	while (!(UART_GET_LSR(uart) & THRE))
-		cpu_relax();
-
-	UART_CLEAR_DLAB(uart);
-	UART_PUT_CHAR(uart, (unsigned char)chr);
-}
-
-static int bfin_serial_poll_get_char(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned char chr;
-
-	while (!(UART_GET_LSR(uart) & DR))
-		cpu_relax();
-
-	UART_CLEAR_DLAB(uart);
-	chr = UART_GET_CHAR(uart);
-
-	return chr;
-}
-#endif
-
-static struct uart_ops bfin_serial_pops = {
-	.tx_empty	= bfin_serial_tx_empty,
-	.set_mctrl	= bfin_serial_set_mctrl,
-	.get_mctrl	= bfin_serial_get_mctrl,
-	.stop_tx	= bfin_serial_stop_tx,
-	.start_tx	= bfin_serial_start_tx,
-	.stop_rx	= bfin_serial_stop_rx,
-	.break_ctl	= bfin_serial_break_ctl,
-	.startup	= bfin_serial_startup,
-	.shutdown	= bfin_serial_shutdown,
-	.set_termios	= bfin_serial_set_termios,
-	.set_ldisc	= bfin_serial_set_ldisc,
-	.type		= bfin_serial_type,
-	.release_port	= bfin_serial_release_port,
-	.request_port	= bfin_serial_request_port,
-	.config_port	= bfin_serial_config_port,
-	.verify_port	= bfin_serial_verify_port,
-#ifdef CONFIG_CONSOLE_POLL
-	.poll_put_char	= bfin_serial_poll_put_char,
-	.poll_get_char	= bfin_serial_poll_get_char,
-#endif
-};
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
-/*
- * If the port was already initialised (eg, by a boot loader),
- * try to determine the current setup.
- */
-static void __init
-bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
-			   int *parity, int *bits)
-{
-	unsigned int status;
-
-	status = UART_GET_IER(uart) & (ERBFI | ETBEI);
-	if (status == (ERBFI | ETBEI)) {
-		/* ok, the port was enabled */
-		u32 lcr, clk;
-
-		lcr = UART_GET_LCR(uart);
-
-		*parity = 'n';
-		if (lcr & PEN) {
-			if (lcr & EPS)
-				*parity = 'e';
-			else
-				*parity = 'o';
-		}
-		*bits = ((lcr & WLS_MASK) >> WLS_OFFSET) + 5;
-
-		/* Set DLAB in LCR to Access CLK */
-		UART_SET_DLAB(uart);
-
-		clk = UART_GET_CLK(uart);
-
-		/* Clear DLAB in LCR to Access THR RBR IER */
-		UART_CLEAR_DLAB(uart);
-
-		*baud = get_sclk() / (16*clk);
-	}
-	pr_debug("%s:baud = %d, parity = %c, bits= %d\n", __func__, *baud, *parity, *bits);
-}
-
-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)
-{
-	struct bfin_serial_port *uart;
-	int baud = 57600;
-	int bits = 8;
-	int parity = 'n';
-# if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(SERIAL_BFIN_HARD_CTSRTS)
-	int flow = 'r';
-# else
-	int flow = 'n';
-# endif
-
-	/*
-	 * 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 < 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);
-	else
-		bfin_serial_console_get_options(uart, &baud, &parity, &bits);
-
-	return uart_set_options(&uart->port, co, baud, parity, bits, flow);
-}
-
-static struct console bfin_serial_console = {
-	.name		= BFIN_SERIAL_DEV_NAME,
-	.write		= bfin_serial_console_write,
-	.device		= uart_console_device,
-	.setup		= bfin_serial_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &bfin_serial_reg,
-};
-#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"
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-bfin_earlyprintk_console_write(struct console *co, const char *s, unsigned int count)
-{
-	unsigned long flags;
-
-	if (bfin_earlyprintk_port.port.line != co->index)
-		return;
-
-	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);
-}
-
-/*
- * This should have a .setup or .early_setup in it, but then things get called
- * without the command line options, and the baud rate gets messed up - so
- * don't let the common infrastructure play with things. (see calls to setup
- * & earlysetup in ./kernel/printk.c:register_console()
- */
-static struct console bfin_early_serial_console __initdata = {
-	.name = "early_BFuart",
-	.write = bfin_earlyprintk_console_write,
-	.device = uart_console_device,
-	.flags = CON_PRINTBUFFER,
-	.index = -1,
-	.data  = &bfin_serial_reg,
-};
-#endif
-
-static struct uart_driver bfin_serial_reg = {
-	.owner			= THIS_MODULE,
-	.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 *pdev, pm_message_t state)
-{
-	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
-
-	return uart_suspend_port(&bfin_serial_reg, &uart->port);
-}
-
-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_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	struct bfin_serial_port *uart = NULL;
-	int ret = 0;
-
-	if (pdev->id < 0 || pdev->id >= BFIN_UART_NR_PORTS) {
-		dev_err(&pdev->dev, "Wrong bfin uart platform device id.\n");
-		return -ENOENT;
-	}
-
-	if (bfin_serial_ports[pdev->id] == NULL) {
-
-		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;
-
-#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(
-			dev_get_platdata(&pdev->dev),
-			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, resource_size(res));
-		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;
-
-		uart->tx_irq = platform_get_irq(pdev, 0);
-		if (uart->tx_irq < 0) {
-			dev_err(&pdev->dev, "No uart TX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-
-		uart->rx_irq = platform_get_irq(pdev, 1);
-		if (uart->rx_irq < 0) {
-			dev_err(&pdev->dev, "No uart RX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-		uart->port.irq = uart->rx_irq;
-
-		uart->status_irq = platform_get_irq(pdev, 2);
-		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
-		spin_lock_init(&uart->rx_lock);
-		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;
-
-		timer_setup(&uart->rx_dma_timer, bfin_serial_rx_dma_timeout, 0);
-#endif
-
-#if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(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;
-#endif
-	}
-
-#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(dev_get_platdata(&pdev->dev));
-out_error_free_mem:
-		kfree(uart);
-		bfin_serial_ports[pdev->id] = NULL;
-	}
-
-	return ret;
-}
-
-static int bfin_serial_remove(struct platform_device *pdev)
-{
-	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);
-		iounmap(uart->port.membase);
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-		kfree(uart);
-		bfin_serial_ports[pdev->id] = NULL;
-	}
-
-	return 0;
-}
-
-static struct platform_driver bfin_serial_driver = {
-	.probe		= bfin_serial_probe,
-	.remove		= bfin_serial_remove,
-	.suspend	= bfin_serial_suspend,
-	.resume		= bfin_serial_resume,
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-};
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE)
-static struct early_platform_driver early_bfin_serial_driver __initdata = {
-	.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;
-
-	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(dev_get_platdata(&pdev->dev),
-					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,
-						     resource_size(res));
-	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(dev_get_platdata(&pdev->dev));
-
-	return ret;
-}
-
-static struct platform_driver bfin_earlyprintk_driver = {
-	.probe		= bfin_earlyprintk_probe,
-	.driver		= {
-		.name	= DRIVER_NAME,
-		.owner	= THIS_MODULE,
-	},
-};
-
-static struct early_platform_driver early_bfin_earlyprintk_driver __initdata = {
-	.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];
-
-	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) {
-		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;
-}
-
-static void __exit bfin_serial_exit(void)
-{
-	platform_driver_unregister(&bfin_serial_driver);
-	uart_unregister_driver(&bfin_serial_reg);
-}
-
-
-module_init(bfin_serial_init);
-module_exit(bfin_serial_exit);
-
-MODULE_AUTHOR("Sonic Zhang, Aubrey Li");
-MODULE_DESCRIPTION("Blackfin generic serial port driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(BFIN_SERIAL_MAJOR);
-MODULE_ALIAS("platform:bfin-uart");