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linux-next/drivers/usb/serial/xsens_mt.c
Frans Klaver adceac1416 usb: serial: xsens_mt: always bind to interface number 1
Probe is testing if the current interface provides two bulk endpoints.
While this achieves the goal of only binding to the correct interface,
we already know we can find the device on interface number 1. Stop
checking the endpoints and just return successfully when interface
number 1 is probed.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
2014-09-04 11:18:26 +02:00

73 lines
1.7 KiB
C

/*
* Xsens MT USB driver
*
* Copyright (C) 2013 Xsens <info@xsens.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/uaccess.h>
#define XSENS_VID 0x2639
#define MTi_10_IMU_PID 0x0001
#define MTi_20_VRU_PID 0x0002
#define MTi_30_AHRS_PID 0x0003
#define MTi_100_IMU_PID 0x0011
#define MTi_200_VRU_PID 0x0012
#define MTi_300_AHRS_PID 0x0013
#define MTi_G_700_GPS_INS_PID 0x0017
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(XSENS_VID, MTi_10_IMU_PID) },
{ USB_DEVICE(XSENS_VID, MTi_20_VRU_PID) },
{ USB_DEVICE(XSENS_VID, MTi_30_AHRS_PID) },
{ USB_DEVICE(XSENS_VID, MTi_100_IMU_PID) },
{ USB_DEVICE(XSENS_VID, MTi_200_VRU_PID) },
{ USB_DEVICE(XSENS_VID, MTi_300_AHRS_PID) },
{ USB_DEVICE(XSENS_VID, MTi_G_700_GPS_INS_PID) },
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
static int xsens_mt_probe(struct usb_serial *serial,
const struct usb_device_id *id)
{
if (serial->interface->cur_altsetting->desc.bInterfaceNumber == 1)
return 0;
return -ENODEV;
}
static struct usb_serial_driver xsens_mt_device = {
.driver = {
.owner = THIS_MODULE,
.name = "xsens_mt",
},
.id_table = id_table,
.num_ports = 1,
.probe = xsens_mt_probe,
};
static struct usb_serial_driver * const serial_drivers[] = {
&xsens_mt_device, NULL
};
module_usb_serial_driver(serial_drivers, id_table);
MODULE_AUTHOR("Frans Klaver <frans.klaver@xsens.com>");
MODULE_DESCRIPTION("USB-serial driver for Xsens motion trackers");
MODULE_LICENSE("GPL");