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serial amba-pl010: enable PPS support

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

Signed-off-by: Rodolfo 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rodolfo Giometti 2010-03-10 15:23:48 -08:00 committed by Linus Torvalds
parent dc77f161aa
commit 7ed63d5eb4
1 changed files with 15 additions and 0 deletions
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15
drivers/serial/amba-pl010.c
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@ -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,