From 7ed63d5eb4c0de0321f5c0a7328e132a78f9fafe Mon Sep 17 00:00:00 2001 From: Rodolfo Giometti Date: Wed, 10 Mar 2010 15:23:48 -0800 Subject: [PATCH] serial amba-pl010: enable PPS support Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti Cc: David Woodhouse Cc: Greg KH Cc: Alan Cox Cc: Alexander Gordeev Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/serial/amba-pl010.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index 429a8ae8693..e4b3c2c88bb 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -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, -- 2.34.1