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sc16is7xx: implemented set_mctrl 

Add support for manual setting the modem control lines.

Signed-off-by: Maarten Brock <m.brock@vanmierlo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Maarten Brock 2016-02-14 15:05:25 +01:00 committed by Greg Kroah-Hartman
parent dd9b55883e
commit b7dfdea859
1 changed files with 10 additions and 2 deletions
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12
drivers/tty/serial/sc16is7xx.c
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@ -761,12 +761,20 @@ static void sc16is7xx_reg_proc(struct kthread_work *ws)
memset(&one->config, 0, sizeof(one->config));
spin_unlock_irqrestore(&one->port.lock, irqflags);
if (config.flags & SC16IS7XX_RECONF_MD)
if (config.flags & SC16IS7XX_RECONF_MD) {
sc16is7xx_port_update(&one->port, SC16IS7XX_MCR_REG,
SC16IS7XX_MCR_LOOP_BIT,
(one->port.mctrl & TIOCM_LOOP) ?
SC16IS7XX_MCR_LOOP_BIT : 0);
sc16is7xx_port_update(&one->port, SC16IS7XX_MCR_REG,
SC16IS7XX_MCR_RTS_BIT,
(one->port.mctrl & TIOCM_RTS) ?
SC16IS7XX_MCR_RTS_BIT : 0);
sc16is7xx_port_update(&one->port, SC16IS7XX_MCR_REG,
SC16IS7XX_MCR_DTR_BIT,
(one->port.mctrl & TIOCM_DTR) ?
SC16IS7XX_MCR_DTR_BIT : 0);
}
if (config.flags & SC16IS7XX_RECONF_IER)
sc16is7xx_port_update(&one->port, SC16IS7XX_IER_REG,
config.ier_clear, 0);