From: Janusz Uzycki <j.uzycki@elproma.com.pl>
Date: Fri, 10 Oct 2014 16:53:25 +0000 (+0200)
Subject: serial: mxs-auart: use mctrl_gpio helpers for handling modem signals
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~83^2~102
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c573d7ea6c5a866cf89b7bf45fc5ab82d289cf1;p=pandora-kernel.git

serial: mxs-auart: use mctrl_gpio helpers for handling modem signals

Dedicated CTS and RTS pins are unusable together with a lot of other
peripherals because they share the same line. Pinctrl is limited.

Moreover, the AUART controller doesn't handle DTR/DSR/DCD/RI signals,
so we have to control them via GPIO.

This patch permits to use GPIOs to control the CTS/RTS/DTR/DSR/DCD/RI
signals.

Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Reviewed-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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