* The device works as an standard CDC device, it has 2 interfaces, the first
* one is for firmware access and the second is the serial one.
* The protocol is very simply, there are two posibilities reading or writing.
- * When writting the first urb must have a Header that starts with 0x20 0x29 the
+ * When writing the first urb must have a Header that starts with 0x20 0x29 the
* next two bytes must say how much data will be sended.
* When reading the process is almost equal except that the header starts with
* 0x00 0x20.
* buffer: The First and Second byte is used for a Header, the Third and Fourth
* tells the device the amount of information the package holds.
* Packages are 60 bytes long Header Stuff.
- * When writting to the device the first two bytes of the header are 0x20 0x29
+ * When writing to the device the first two bytes of the header are 0x20 0x29
* When reading the bytes are 0x00 0x20, or 0x00 0x10, there is an strange
* situation, when too much data arrives to the device because it sends the data
* but with out the header. I will use a simply hack to override this situation,
struct circ_buf *rx_buf; /* read buffer */
int rx_flags; /* for throttilng */
struct work_struct rx_work; /* work cue for the receiving line */
+ struct usb_serial_port *port; /* USB port with which associated */
};
/* Private methods */
int count, result;
struct aircable_private *priv = usb_get_serial_port_data(port);
unsigned char* buf;
+ u16 *dbuf;
dbg("%s - port %d", __FUNCTION__, port->number);
if (port->write_urb_busy)
return;
buf[0] = TX_HEADER_0;
buf[1] = TX_HEADER_1;
- buf[2] = (unsigned char)count;
- buf[3] = (unsigned char)(count >> 8);
+ dbuf = (u16 *)&buf[2];
+ *dbuf = cpu_to_le16((u16)count);
serial_buf_get(priv->tx_buf,buf + HCI_HEADER_LENGTH, MAX_HCI_FRAMESIZE);
memcpy(port->write_urb->transfer_buffer, buf,
schedule_work(&port->work);
}
-static void aircable_read(void *params)
+static void aircable_read(struct work_struct *work)
{
- struct usb_serial_port *port = params;
- struct aircable_private *priv = usb_get_serial_port_data(port);
+ struct aircable_private *priv =
+ container_of(work, struct aircable_private, rx_work);
+ struct usb_serial_port *port = priv->port;
struct tty_struct *tty;
unsigned char *data;
int count;
*/
tty = port->tty;
- if (!tty)
+ if (!tty) {
schedule_work(&priv->rx_work);
+ err("%s - No tty available", __FUNCTION__);
+ return ;
+ }
count = min(64, serial_buf_data_avail(priv->rx_buf));
for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
endpoint = &iface_desc->endpoint[i].desc;
- if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
- ((endpoint->bmAttributes & 3) == 0x02)) {
- /* we found our bulk out endpoint */
+ if (usb_endpoint_is_bulk_out(endpoint)) {
dbg("found bulk out on endpoint %d", i);
++num_bulk_out;
}
}
priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
- INIT_WORK(&priv->rx_work, aircable_read, port);
+ priv->port = port;
+ INIT_WORK(&priv->rx_work, aircable_read);
usb_set_serial_port_data(serial->port[0], priv);
}
-static void aircable_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
+static void aircable_write_bulk_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
+ int status = urb->status;
int result;
- dbg("%s - urb->status: %d", __FUNCTION__ , urb->status);
+ dbg("%s - urb status: %d", __FUNCTION__ , status);
/* This has been taken from cypress_m8.c cypress_write_int_callback */
- switch (urb->status) {
+ switch (status) {
case 0:
/* success */
break;
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d",
- __FUNCTION__, urb->status);
+ __FUNCTION__, status);
port->write_urb_busy = 0;
return;
default:
/* error in the urb, so we have to resubmit it */
dbg("%s - Overflow in write", __FUNCTION__);
dbg("%s - nonzero write bulk status received: %d",
- __FUNCTION__, urb->status);
+ __FUNCTION__, status);
port->write_urb->transfer_buffer_length = 1;
port->write_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->write_urb, GFP_KERNEL);
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (result)
dev_err(&urb->dev->dev,
"%s - failed resubmitting write urb, error %d\n",
aircable_send(port);
}
-static void aircable_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
+static void aircable_read_bulk_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct aircable_private *priv = usb_get_serial_port_data(port);
unsigned long no_packages, remaining, package_length, i;
int result, shift = 0;
unsigned char *temp;
+ int status = urb->status;
dbg("%s - port %d", __FUNCTION__, port->number);
- if (urb->status) {
- dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
+ if (status) {
+ dbg("%s - urb status = %d", __FUNCTION__, status);
if (!port->open_count) {
dbg("%s - port is closed, exiting.", __FUNCTION__);
return;
}
- if (urb->status == -EPROTO) {
+ if (status == -EPROTO) {
dbg("%s - caught -EPROTO, resubmitting the urb",
__FUNCTION__);
usb_fill_bulk_urb(port->read_urb, port->serial->dev,
package_length - shift);
}
}
- aircable_read(port);
+ aircable_read(&priv->rx_work);
}
/* Schedule the next read _if_ we are still open */
schedule_work(&priv->rx_work);
}
+static struct usb_driver aircable_driver = {
+ .name = "aircable",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+ .no_dynamic_id = 1,
+};
+
static struct usb_serial_driver aircable_device = {
- .description = "aircable",
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "aircable",
+ },
+ .usb_driver = &aircable_driver,
.id_table = id_table,
.num_ports = 1,
.attach = aircable_attach,
.unthrottle = aircable_unthrottle,
};
-static struct usb_driver aircable_driver = {
- .name = "aircable",
- .probe = usb_serial_probe,
- .disconnect = usb_serial_disconnect,
- .id_table = id_table,
-};
-
static int __init aircable_init (void)
{
int retval;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff