diff options
| author | Sebastian Reichel <sre@kernel.org> | 2017-03-28 18:59:32 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2017-04-12 23:12:17 +0300 |
| commit | 5659dab26f09a60db8bd1600e1ce89802fab1c7f (patch) | |
| tree | 3961742bb77f667d58434ca80e5489bf6ac5d5d2 /drivers/tty | |
| parent | b3f80c8f75efb2e6a817a0e48bf36cd30685a138 (diff) | |
| download | linux-5659dab26f09a60db8bd1600e1ce89802fab1c7f.tar.xz | |
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>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serdev/core.c | 22 | ||||
| -rw-r--r-- | drivers/tty/serdev/serdev-ttyport.c | 24 |
2 files changed, 46 insertions, 0 deletions
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c index a63b74031e22..1e1cbae3a0ea 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); diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c index 50dc75c4d204..487c88f6aa0e 100644 --- a/drivers/tty/serdev/serdev-ttyport.c +++ b/drivers/tty/serdev/serdev-ttyport.c @@ -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, |