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serial: mxs-auart: enable PPS support 

Enables PPS support in mxs-auart serial driver to make PPS API working.

Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Janusz Uzycki 2014-10-10 18:53:27 +02:00 committed by Greg Kroah-Hartman
parent f9e42397d7
commit 36a262782b
1 changed files with 11 additions and 0 deletions
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11
drivers/tty/serial/mxs-auart.c
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@ -784,6 +784,16 @@ static void mxs_auart_settermios(struct uart_port *u,
mxs_auart_disable_ms(u);
}
static void mxs_auart_set_ldisc(struct uart_port *port, int new)
{
if (new == N_PPS) {
port->flags |= UPF_HARDPPS_CD;
mxs_auart_enable_ms(port);
} else {
port->flags &= ~UPF_HARDPPS_CD;
}
}
static irqreturn_t mxs_auart_irq_handle(int irq, void *context)
{
u32 istat;
@ -949,6 +959,7 @@ static struct uart_ops mxs_auart_ops = {
.startup = mxs_auart_startup,
.shutdown = mxs_auart_shutdown,
.set_termios = mxs_auart_settermios,
.set_ldisc = mxs_auart_set_ldisc,
.type = mxs_auart_type,
.release_port = mxs_auart_release_port,
.request_port = mxs_auart_request_port,