drivers/usb/serial/qcserial.c

   1 /*
   2  * Qualcomm Serial USB driver
   3  *
   4  *      Copyright (c) 2008 QUALCOMM Incorporated.
   5  *      Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
   6  *      Copyright (c) 2009 Novell Inc.
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License version
  10  *      2 as published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/tty.h>
  15 #include <linux/tty_flip.h>
  16 #include <linux/usb.h>
  17 #include <linux/usb/serial.h>
  18
  19 #define DRIVER_AUTHOR "Qualcomm Inc"
  20 #define DRIVER_DESC "Qualcomm USB Serial driver"
  21
  22 static int debug;
  23
  24 static struct usb_device_id id_table[] = {
  25         {USB_DEVICE(0x05c6, 0x9211)},   /* Acer Gobi QDL device */
  26         {USB_DEVICE(0x05c6, 0x9212)},   /* Acer Gobi Modem Device */
  27         {USB_DEVICE(0x03f0, 0x1f1d)},   /* HP un2400 Gobi Modem Device */
  28         {USB_DEVICE(0x03f0, 0x201d)},   /* HP un2400 Gobi QDL Device */
  29         {USB_DEVICE(0x04da, 0x250d)},   /* Panasonic Gobi Modem device */
  30         {USB_DEVICE(0x04da, 0x250c)},   /* Panasonic Gobi QDL device */
  31         {USB_DEVICE(0x413c, 0x8172)},   /* Dell Gobi Modem device */
  32         {USB_DEVICE(0x413c, 0x8171)},   /* Dell Gobi QDL device */
  33         {USB_DEVICE(0x1410, 0xa001)},   /* Novatel Gobi Modem device */
  34         {USB_DEVICE(0x1410, 0xa008)},   /* Novatel Gobi QDL device */
  35         {USB_DEVICE(0x0b05, 0x1776)},   /* Asus Gobi Modem device */
  36         {USB_DEVICE(0x0b05, 0x1774)},   /* Asus Gobi QDL device */
  37         {USB_DEVICE(0x19d2, 0xfff3)},   /* ONDA Gobi Modem device */
  38         {USB_DEVICE(0x19d2, 0xfff2)},   /* ONDA Gobi QDL device */
  39         {USB_DEVICE(0x1557, 0x0a80)},   /* OQO Gobi QDL device */
  40         {USB_DEVICE(0x05c6, 0x9001)},   /* Generic Gobi Modem device */
  41         {USB_DEVICE(0x05c6, 0x9002)},   /* Generic Gobi Modem device */
  42         {USB_DEVICE(0x05c6, 0x9202)},   /* Generic Gobi Modem device */
  43         {USB_DEVICE(0x05c6, 0x9203)},   /* Generic Gobi Modem device */
  44         {USB_DEVICE(0x05c6, 0x9222)},   /* Generic Gobi Modem device */
  45         {USB_DEVICE(0x05c6, 0x9008)},   /* Generic Gobi QDL device */
  46         {USB_DEVICE(0x05c6, 0x9201)},   /* Generic Gobi QDL device */
  47         {USB_DEVICE(0x05c6, 0x9221)},   /* Generic Gobi QDL device */
  48         {USB_DEVICE(0x05c6, 0x9231)},   /* Generic Gobi QDL device */
  49         {USB_DEVICE(0x1f45, 0x0001)},   /* Unknown Gobi QDL device */
  50         { }                             /* Terminating entry */
  51 };
  52 MODULE_DEVICE_TABLE(usb, id_table);
  53
  54 static struct usb_driver qcdriver = {
  55         .name                   = "qcserial",
  56         .probe                  = usb_serial_probe,
  57         .disconnect             = usb_serial_disconnect,
  58         .id_table               = id_table,
  59         .suspend                = usb_serial_suspend,
  60         .resume                 = usb_serial_resume,
  61         .supports_autosuspend   = true,
  62 };
  63
  64 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
  65 {
  66         int retval = -ENODEV;
  67         __u8 nintf;
  68         __u8 ifnum;
  69
  70         dbg("%s", __func__);
  71
  72         nintf = serial->dev->actconfig->desc.bNumInterfaces;
  73         dbg("Num Interfaces = %d", nintf);
  74         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
  75         dbg("This Interface = %d", ifnum);
  76
  77         switch (nintf) {
  78         case 1:
  79                 /* QDL mode */
  80                 if (serial->interface->num_altsetting == 2) {
  81                         struct usb_host_interface *intf;
  82
  83                         intf = &serial->interface->altsetting[1];
  84                         if (intf->desc.bNumEndpoints == 2) {
  85                                 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
  86                                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
  87                                         dbg("QDL port found");
  88                                         retval = usb_set_interface(serial->dev, ifnum, 1);
  89                                         if (retval < 0) {
  90                                                 dev_err(&serial->dev->dev,
  91                                                         "Could not set interface, error %d\n",
  92                                                         retval);
  93                                                 retval = -ENODEV;
  94                                         }
  95                                         return retval;
  96                                 }
  97                         }
  98                 }
  99                 break;
 100
 101         case 4:
 102                 /* Composite mode */
 103                 if (ifnum == 2) {
 104                         dbg("Modem port found");
 105                         retval = usb_set_interface(serial->dev, ifnum, 0);
 106                         if (retval < 0) {
 107                                 dev_err(&serial->dev->dev,
 108                                         "Could not set interface, error %d\n",
 109                                         retval);
 110                                 retval = -ENODEV;
 111                         }
 112                         return retval;
 113                 }
 114                 break;
 115
 116         default:
 117                 dev_err(&serial->dev->dev,
 118                         "unknown number of interfaces: %d\n", nintf);
 119                 return -ENODEV;
 120         }
 121
 122         return retval;
 123 }
 124
 125 static struct usb_serial_driver qcdevice = {
 126         .driver = {
 127                 .owner     = THIS_MODULE,
 128                 .name      = "qcserial",
 129         },
 130         .description         = "Qualcomm USB modem",
 131         .id_table            = id_table,
 132         .usb_driver          = &qcdriver,
 133         .num_ports           = 1,
 134         .probe               = qcprobe,
 135 };
 136
 137 static int __init qcinit(void)
 138 {
 139         int retval;
 140
 141         retval = usb_serial_register(&qcdevice);
 142         if (retval)
 143                 return retval;
 144
 145         retval = usb_register(&qcdriver);
 146         if (retval) {
 147                 usb_serial_deregister(&qcdevice);
 148                 return retval;
 149         }
 150
 151         return 0;
 152 }
 153
 154 static void __exit qcexit(void)
 155 {
 156         usb_deregister(&qcdriver);
 157         usb_serial_deregister(&qcdevice);
 158 }
 159
 160 module_init(qcinit);
 161 module_exit(qcexit);
 162
 163 MODULE_AUTHOR(DRIVER_AUTHOR);
 164 MODULE_DESCRIPTION(DRIVER_DESC);
 165 MODULE_LICENSE("GPL v2");
 166
 167 module_param(debug, bool, S_IRUGO | S_IWUSR);
 168 MODULE_PARM_DESC(debug, "Debug enabled or not");