Merge branch 'linux-2.6'

1 files changed, 28 insertions, 52 deletions

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index d6b4ead693b7..fd9bb777df28 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -49,6 +49,7 @@
 #define DMA_RX_YCOUNT		(PAGE_SIZE / DMA_RX_XCOUNT)
 
 #define DMA_RX_FLUSH_JIFFIES	(HZ / 50)
+#define CTS_CHECK_JIFFIES	(HZ / 50)
 
 #ifdef CONFIG_SERIAL_BFIN_DMA
 static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart);
@@ -290,11 +291,6 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
 {
 	struct circ_buf *xmit = &uart->port.info->xmit;
 
-	if (uart->port.x_char) {
-		UART_PUT_CHAR(uart, uart->port.x_char);
-		uart->port.icount.tx++;
-		uart->port.x_char = 0;
-	}
 	/*
 	 * Check the modem control lines before
 	 * transmitting anything.
@@ -306,6 +302,12 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
 		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);
@@ -345,15 +347,6 @@ static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id)
 }
 #endif
 
-#ifdef CONFIG_SERIAL_BFIN_CTSRTS
-static void bfin_serial_do_work(struct work_struct *work)
-{
-	struct bfin_serial_port *uart = container_of(work, struct bfin_serial_port, cts_workqueue);
-
-	bfin_serial_mctrl_check(uart);
-}
-#endif
-
 #ifdef CONFIG_SERIAL_BFIN_DMA
 static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
 {
@@ -361,6 +354,12 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
 
 	uart->tx_done = 0;
 
+	/*
+	 * Check the modem control lines before
+	 * transmitting anything.
+	 */
+	bfin_serial_mctrl_check(uart);
+
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
 		uart->tx_count = 0;
 		uart->tx_done = 1;
@@ -373,12 +372,6 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
 		uart->port.x_char = 0;
 	}
 
-	/*
-	 * Check the modem control lines before
-	 * transmitting anything.
-	 */
-	bfin_serial_mctrl_check(uart);
-
 	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;
@@ -530,11 +523,7 @@ static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
 	if (uart->cts_pin < 0)
 		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
 
-# ifdef BF54x
-	if (UART_GET_MSR(uart) & CTS)
-# else
-	if (gpio_get_value(uart->cts_pin))
-# endif
+	if (UART_GET_CTS(uart))
 		return TIOCM_DSR | TIOCM_CAR;
 	else
 #endif
@@ -549,17 +538,9 @@ static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
 		return;
 
 	if (mctrl & TIOCM_RTS)
-# ifdef BF54x
-		UART_PUT_MCR(uart, UART_GET_MCR(uart) & ~MRTS);
-# else
-		gpio_set_value(uart->rts_pin, 0);
-# endif
+		UART_CLEAR_RTS(uart);
 	else
-# ifdef BF54x
-		UART_PUT_MCR(uart, UART_GET_MCR(uart) | MRTS);
-# else
-		gpio_set_value(uart->rts_pin, 1);
-# endif
+		UART_SET_RTS(uart);
 #endif
 }
 
@@ -577,7 +558,10 @@ static void bfin_serial_mctrl_check(struct bfin_serial_port *uart)
 	uart_handle_cts_change(&uart->port, status & TIOCM_CTS);
 	if (!(status & TIOCM_CTS)) {
 		tty->hw_stopped = 1;
-		schedule_work(&uart->cts_workqueue);
+		uart->cts_timer.data = (unsigned long)(uart);
+		uart->cts_timer.function = (void *)bfin_serial_mctrl_check;
+		uart->cts_timer.expires = jiffies + CTS_CHECK_JIFFIES;
+		add_timer(&(uart->cts_timer));
 	} else {
 		tty->hw_stopped = 0;
 	}
@@ -752,11 +736,7 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	/* Disable UART */
 	ier = UART_GET_IER(uart);
-#ifdef CONFIG_BF54x
-	UART_CLEAR_IER(uart, 0xF);
-#else
-	UART_PUT_IER(uart, 0);
-#endif
+	UART_DISABLE_INTS(uart);
 
 	/* Set DLAB in LCR to Access DLL and DLH */
 	UART_SET_DLAB(uart);
@@ -771,11 +751,7 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 	UART_PUT_LCR(uart, lcr);
 
 	/* Enable UART */
-#ifdef CONFIG_BF54x
-	UART_SET_IER(uart, ier);
-#else
-	UART_PUT_IER(uart, ier);
-#endif
+	UART_ENABLE_INTS(uart, ier);
 
 	val = UART_GET_GCTL(uart);
 	val |= UCEN;
@@ -833,15 +809,15 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
  * Enable the IrDA function if tty->ldisc.num is N_IRDA.
  * In other cases, disable IrDA function.
  */
-static void bfin_set_ldisc(struct tty_struct *tty)
+static void bfin_serial_set_ldisc(struct uart_port *port)
 {
-	int line = tty->index;
+	int line = port->line;
 	unsigned short val;
 
-	if (line >= tty->driver->num)
+	if (line >= port->info->tty->driver->num)
 		return;
 
-	switch (tty->ldisc.num) {
+	switch (port->info->tty->ldisc.num) {
 	case N_IRDA:
 		val = UART_GET_GCTL(&bfin_serial_ports[line]);
 		val |= (IREN | RPOLC);
@@ -866,6 +842,7 @@ static struct uart_ops bfin_serial_pops = {
 	.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,
@@ -904,7 +881,7 @@ static void __init bfin_serial_init_ports(void)
 		init_timer(&(bfin_serial_ports[i].rx_dma_timer));
 #endif
 #ifdef CONFIG_SERIAL_BFIN_CTSRTS
-		INIT_WORK(&bfin_serial_ports[i].cts_workqueue, bfin_serial_do_work);
+		init_timer(&(bfin_serial_ports[i].cts_timer));
 		bfin_serial_ports[i].cts_pin	    =
 			bfin_serial_resource[i].uart_cts_pin;
 		bfin_serial_ports[i].rts_pin	    =
@@ -1206,7 +1183,6 @@ static int __init bfin_serial_init(void)
 
 	ret = uart_register_driver(&bfin_serial_reg);
 	if (ret == 0) {
-		bfin_serial_reg.tty_driver->set_ldisc = bfin_set_ldisc;
 		ret = platform_driver_register(&bfin_serial_driver);
 		if (ret) {
 			pr_debug("uart register failed\n");