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serdev: implement get/set tiocm

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Add method for getting and setting tiocm.

Acked-by: Pavel Machek <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Sebastian Reichel 2017-03-28 17:59:32 +02:00 • committed by Marcel Holtmann
commit 5659dab26f
3 changed files with 59 additions and 0 deletions
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22
drivers/tty/serdev/core.c
View file

@ -184,6 +184,28 @@ void serdev_device_wait_until_sent(struct serdev_device *serdev, long timeout)
}
EXPORT_SYMBOL_GPL(serdev_device_wait_until_sent);
int serdev_device_get_tiocm(struct serdev_device *serdev)
{
struct serdev_controller *ctrl = serdev->ctrl;
if (!ctrl || !ctrl->ops->get_tiocm)
return -ENOTSUPP;
return ctrl->ops->get_tiocm(ctrl);
}
EXPORT_SYMBOL_GPL(serdev_device_get_tiocm);
int serdev_device_set_tiocm(struct serdev_device *serdev, int set, int clear)
{
struct serdev_controller *ctrl = serdev->ctrl;
if (!ctrl || !ctrl->ops->set_tiocm)
return -ENOTSUPP;
return ctrl->ops->set_tiocm(ctrl, set, clear);
}
EXPORT_SYMBOL_GPL(serdev_device_set_tiocm);
static int serdev_drv_probe(struct device *dev)
{
const struct serdev_device_driver *sdrv = to_serdev_device_driver(dev->driver);

24
drivers/tty/serdev/serdev-ttyport.c
View file

@ -176,6 +176,28 @@ static void ttyport_wait_until_sent(struct serdev_controller *ctrl, long timeout
tty_wait_until_sent(tty, timeout);
}
static int ttyport_get_tiocm(struct serdev_controller *ctrl)
{
struct serport *serport = serdev_controller_get_drvdata(ctrl);
struct tty_struct *tty = serport->tty;
if (!tty->ops->tiocmget)
return -ENOTSUPP;
return tty->driver->ops->tiocmget(tty);
}
static int ttyport_set_tiocm(struct serdev_controller *ctrl, unsigned int set, unsigned int clear)
{
struct serport *serport = serdev_controller_get_drvdata(ctrl);
struct tty_struct *tty = serport->tty;
if (!tty->ops->tiocmset)
return -ENOTSUPP;
return tty->driver->ops->tiocmset(tty, set, clear);
}
static const struct serdev_controller_ops ctrl_ops = {
.write_buf = ttyport_write_buf,
.write_flush = ttyport_write_flush,
@ -185,6 +207,8 @@ static const struct serdev_controller_ops ctrl_ops = {
.set_flow_control = ttyport_set_flow_control,
.set_baudrate = ttyport_set_baudrate,
.wait_until_sent = ttyport_wait_until_sent,
.get_tiocm = ttyport_get_tiocm,
.set_tiocm = ttyport_set_tiocm,
};
struct device *serdev_tty_port_register(struct tty_port *port,