int bcm4774_resume(struct platform_device *p)
{
struct tty_struct *ttypoint;
struct file *ttyfile;
if((NULL == priv) || (NULL == priv->tty) || (NULL == priv->tty->private_data))
{
pr_err("%s priv is NOT init \n", __func__);
return -1;
}
ttyfile = priv->tty;
ttypoint = ((struct tty_file_private *)ttyfile->private_data)->tty;
if((NULL == ttypoint) || (NULL == ttypoint->port))
{
pr_err("%s ttypoint is NULL \n", __func__);
return -1;
}
/* Enable uart RTS */
tty_port_lower_dtr_rts(ttypoint->port);
/* Enable uart flow control */
if (bcm_tty_config(ttyfile)) {
pr_err("%s can not change %s setting.\n", __func__, PORT_NAME);
return -EIO;
}
pr_info("%s -- :%s\n", __func__, ttypoint->name);
return 0;
}
static void tty_port_shutdown(struct tty_port *port, struct tty_struct *tty)
{
mutex_lock(&port->mutex);
if (port->console)
goto out;
if (test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags)) {
/*
* Drop DTR/RTS if HUPCL is set. This causes any attached
* modem to hang up the line.
*/
if (tty && C_HUPCL(tty))
tty_port_lower_dtr_rts(port);
if (port->ops->shutdown)
port->ops->shutdown(port);
}
out:
mutex_unlock(&port->mutex);
}
static void tty_port_shutdown(struct tty_port *port, struct tty_struct *tty)
{
mutex_lock(&port->mutex);
if (port->console)
goto out;
if (tty_port_initialized(port)) {
tty_port_set_initialized(port, 0);
/*
* Drop DTR/RTS if HUPCL is set. This causes any attached
* modem to hang up the line.
*/
if (tty && C_HUPCL(tty))
tty_port_lower_dtr_rts(port);
if (port->ops->shutdown)
port->ops->shutdown(port);
}
out:
mutex_unlock(&port->mutex);
}
