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-rw-r--r--drivers/usb/serial/opticon.c65
1 files changed, 64 insertions, 1 deletions
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 8c87a49ee2b..839583dc8b6 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)