diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/opticon.c | 65 |
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) |