drivers/usb/serial/xsens_mt.c

   1 /*
   2  * Xsens MT USB driver
   3  *
   4  * Copyright (C) 2013 Xsens <info@xsens.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License version
   8  *  2 as published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/tty.h>
  14 #include <linux/module.h>
  15 #include <linux/usb.h>
  16 #include <linux/usb/serial.h>
  17 #include <linux/uaccess.h>
  18
  19 #define XSENS_VID 0x2639
  20
  21 #define MTi_10_IMU_PID          0x0001
  22 #define MTi_20_VRU_PID          0x0002
  23 #define MTi_30_AHRS_PID         0x0003
  24
  25 #define MTi_100_IMU_PID         0x0011
  26 #define MTi_200_VRU_PID         0x0012
  27 #define MTi_300_AHRS_PID        0x0013
  28
  29 #define MTi_G_700_GPS_INS_PID   0x0017
  30
  31 static const struct usb_device_id id_table[] = {
  32         { USB_DEVICE(XSENS_VID, MTi_10_IMU_PID) },
  33         { USB_DEVICE(XSENS_VID, MTi_20_VRU_PID) },
  34         { USB_DEVICE(XSENS_VID, MTi_30_AHRS_PID) },
  35
  36         { USB_DEVICE(XSENS_VID, MTi_100_IMU_PID) },
  37         { USB_DEVICE(XSENS_VID, MTi_200_VRU_PID) },
  38         { USB_DEVICE(XSENS_VID, MTi_300_AHRS_PID) },
  39
  40         { USB_DEVICE(XSENS_VID, MTi_G_700_GPS_INS_PID) },
  41         { },
  42 };
  43 MODULE_DEVICE_TABLE(usb, id_table);
  44
  45 static int has_required_endpoints(const struct usb_host_interface *interface)
  46 {
  47         __u8 i;
  48         int has_bulk_in = 0;
  49         int has_bulk_out = 0;
  50
  51         for (i = 0; i < interface->desc.bNumEndpoints; ++i) {
  52                 if (usb_endpoint_is_bulk_in(&interface->endpoint[i].desc))
  53                         has_bulk_in = 1;
  54                 else if (usb_endpoint_is_bulk_out(&interface->endpoint[i].desc))
  55                         has_bulk_out = 1;
  56         }
  57
  58         return has_bulk_in && has_bulk_out;
  59 }
  60
  61 static int xsens_mt_probe(struct usb_serial *serial,
  62                                         const struct usb_device_id *id)
  63 {
  64         if (!has_required_endpoints(serial->interface->cur_altsetting))
  65                 return -ENODEV;
  66         return 0;
  67 }
  68
  69 static struct usb_serial_driver xsens_mt_device = {
  70         .driver = {
  71                 .owner = THIS_MODULE,
  72                 .name = "xsens_mt",
  73         },
  74         .id_table = id_table,
  75         .num_ports = 1,
  76
  77         .probe = xsens_mt_probe,
  78 };
  79
  80 static struct usb_serial_driver * const serial_drivers[] = {
  81         &xsens_mt_device, NULL
  82 };
  83
  84 module_usb_serial_driver(serial_drivers, id_table);
  85
  86 MODULE_LICENSE("GPL");