From bc85734b126f813ba46265c2d3a84c8839cb2e54 Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Tue, 11 Aug 2015 10:21:22 -0700 Subject: [PATCH] serial: imx: allow waking up on RTSD This patch sets RTSDEN bit when going into idle (Stop mode). We add the RTSDEN for the case RTS is sent from the remote connection. This way we allow the system to wakeup when RTS is received. Cc: Fabio Stevam Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/imx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 3c2b0ac..167dea1 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1982,6 +1982,13 @@ static void serial_imx_enable_wakeup(struct imx_port *sport, bool on) else val &= ~UCR3_AWAKEN; writel(val, sport->port.membase + UCR3); + + val = readl(sport->port.membase + UCR1); + if (on) + val |= UCR1_RTSDEN; + else + val &= ~UCR1_RTSDEN; + writel(val, sport->port.membase + UCR1); } static int imx_serial_port_suspend_noirq(struct device *dev) -- 2.7.4