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Commit 7ed63d5e authored by Rodolfo Giometti's avatar Rodolfo Giometti Committed by Linus Torvalds
Browse files

serial amba-pl010: enable PPS support 



Function pl010_enable_ms() is automagically called when PPS ldisc
is selected.

Signed-off-by: default avatarRodolfo Giometti <giometti@linux.it>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent dc77f161

drivers/serial/amba-pl010.c

+15 −0
Original line number Diff line number Diff line
@@ -471,6 +471,20 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios, 
	spin_unlock_irqrestore(&uap->port.lock, flags);

}



static void pl010_set_ldisc(struct uart_port *port)

{

	int line = port->line;



	if (line >= port->state->port.tty->driver->num)

		return;



	if (port->state->port.tty->ldisc->ops->num == N_PPS) {

		port->flags |= UPF_HARDPPS_CD;

		pl010_enable_ms(port);

	} else

		port->flags &= ~UPF_HARDPPS_CD;

}



static const char *pl010_type(struct uart_port *port)

{

	return port->type == PORT_AMBA ? "AMBA" : NULL;
@@ -531,6 +545,7 @@ static struct uart_ops amba_pl010_pops = { 
	.startup	= pl010_startup,

	.shutdown	= pl010_shutdown,

	.set_termios	= pl010_set_termios,

	.set_ldisc	= pl010_set_ldisc,

	.type		= pl010_type,

	.release_port	= pl010_release_port,

	.request_port	= pl010_request_port,