1 files changed, 64 insertions, 1 deletions

diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 8c87a49ee2bb..839583dc8b6a 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -14,6 +14,7 @@
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
+#include <linux/serial.h>
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
@@ -110,7 +111,6 @@ static void opticon_bulk_callback(struct urb *urb)
                                         priv->rts = false;
                                 else
                                         priv->rts = true;
-                                /* FIXME change the RTS level */
                         } else {
                         dev_dbg(&priv->udev->dev,
                                 "Unknown data packet received from the device:"
@@ -341,6 +341,67 @@ static void opticon_unthrottle(struct tty_struct *tty)
                                                         __func__, result);
 }
 
+static int opticon_tiocmget(struct tty_struct *tty, struct file *file)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct opticon_private *priv = usb_get_serial_data(port->serial);
+        unsigned long flags;
+        int result = 0;
+
+        dbg("%s - port %d", __func__, port->number);
+
+        spin_lock_irqsave(&priv->lock, flags);
+        if (priv->rts)
+                result = TIOCM_RTS;
+        spin_unlock_irqrestore(&priv->lock, flags);
+
+        dbg("%s - %x", __func__, result);
+        return result;
+}
+
+static int get_serial_info(struct opticon_private *priv,
+                           struct serial_struct __user *serial)
+{
+        struct serial_struct tmp;
+
+        if (!serial)
+                return -EFAULT;
+
+        memset(&tmp, 0x00, sizeof(tmp));
+
+        /* fake emulate a 16550 uart to make userspace code happy */
+        tmp.type                = PORT_16550A;
+        tmp.line                = priv->serial->minor;
+        tmp.port                = 0;
+        tmp.irq                 = 0;
+        tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
+        tmp.xmit_fifo_size      = 1024;
+        tmp.baud_base           = 9600;
+        tmp.close_delay         = 5*HZ;
+        tmp.closing_wait        = 30*HZ;
+
+        if (copy_to_user(serial, &tmp, sizeof(*serial)))
+                return -EFAULT;
+        return 0;
+}
+
+static int opticon_ioctl(struct tty_struct *tty, struct file *file,
+                         unsigned int cmd, unsigned long arg)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct opticon_private *priv = usb_get_serial_data(port->serial);
+
+        dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
+
+        switch (cmd) {
+        case TIOCGSERIAL:
+                return get_serial_info(priv,
+                                       (struct serial_struct __user *)arg);
+        }
+
+        return -ENOIOCTLCMD;
+}
+
 static int opticon_startup(struct usb_serial *serial)
 {
         struct opticon_private *priv;
@@ -475,6 +536,8 @@ static struct usb_serial_driver opticon_device = {
         .shutdown =             opticon_shutdown,
         .throttle =             opticon_throttle,
         .unthrottle =           opticon_unthrottle,
+        .ioctl =                opticon_ioctl,
+        .tiocmget =             opticon_tiocmget,
 };
 
 static int __init opticon_init(void)