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Commit 7d01b475 authored by Graf Yang's avatar Graf Yang Committed by Bryan Wu
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Blackfin Serial Driver: Enable IR function when user application (irattach... 


Blackfin Serial Driver: Enable IR function when user application (irattach /dev/ttyBFx -s) call TIOCSETD ioctl with line discipline N_IRDA

Signed-off-by: default avatarGraf Yang <graf.yang@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 0c11700d

drivers/serial/bfin_5xx.c

+26 −0
Original line number Diff line number Diff line
@@ -900,6 +900,31 @@ 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_set_ldisc(struct tty_struct *tty)

{

	int line = tty->index;

	unsigned short val;



	if (line >= tty->driver->num)

		return;



	switch (tty->ldisc.num) {

	case N_IRDA:

		val = UART_GET_GCTL(&bfin_serial_ports[line]);

		val |= (IREN | RPOLC);

		UART_PUT_GCTL(&bfin_serial_ports[line], val);

		break;

	default:

		val = UART_GET_GCTL(&bfin_serial_ports[line]);

		val &= ~(IREN | RPOLC);

		UART_PUT_GCTL(&bfin_serial_ports[line], val);

	}

}



static struct uart_ops bfin_serial_pops = {

	.tx_empty	= bfin_serial_tx_empty,

	.set_mctrl	= bfin_serial_set_mctrl,
@@ -1261,6 +1286,7 @@ 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");