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>

1 files changed, 0 insertions, 937 deletions

diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
deleted file mode 100644
index 4ccca5d22f4f..000000000000
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ /dev/null
@@ -1,937 +0,0 @@
-// 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");