serdev: implement get/set tiocm
Add method for getting and setting tiocm.
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index a63b740..1e1cbae 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -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);