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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 <festevam@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Eduardo Valentin 2015-08-11 10:21:22 -07:00 committed by Greg Kroah-Hartman
parent 189550b864
commit bc85734b12
1 changed files with 7 additions and 0 deletions
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7
drivers/tty/serial/imx.c
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@ -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)