release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include <linux/slab.h>
  19 #include "usb-wwan.h"
  20
  21 #define DRIVER_AUTHOR "Qualcomm Inc"
  22 #define DRIVER_DESC "Qualcomm USB Serial driver"
  23
  24 static int debug;
  25
  26 static const struct usb_device_id id_table[] = {
  27         {USB_DEVICE(0x05c6, 0x9211)},   /* Acer Gobi QDL device */
  28         {USB_DEVICE(0x05c6, 0x9212)},   /* Acer Gobi Modem Device */
  29         {USB_DEVICE(0x03f0, 0x1f1d)},   /* HP un2400 Gobi Modem Device */
  30         {USB_DEVICE(0x03f0, 0x201d)},   /* HP un2400 Gobi QDL Device */
  31         {USB_DEVICE(0x04da, 0x250d)},   /* Panasonic Gobi Modem device */
  32         {USB_DEVICE(0x04da, 0x250c)},   /* Panasonic Gobi QDL device */
  33         {USB_DEVICE(0x413c, 0x8172)},   /* Dell Gobi Modem device */
  34         {USB_DEVICE(0x413c, 0x8171)},   /* Dell Gobi QDL device */
  35         {USB_DEVICE(0x1410, 0xa001)},   /* Novatel Gobi Modem device */
  36         {USB_DEVICE(0x1410, 0xa008)},   /* Novatel Gobi QDL device */
  37         {USB_DEVICE(0x0b05, 0x1776)},   /* Asus Gobi Modem device */
  38         {USB_DEVICE(0x0b05, 0x1774)},   /* Asus Gobi QDL device */
  39         {USB_DEVICE(0x19d2, 0xfff3)},   /* ONDA Gobi Modem device */
  40         {USB_DEVICE(0x19d2, 0xfff2)},   /* ONDA Gobi QDL device */
  41         {USB_DEVICE(0x1557, 0x0a80)},   /* OQO Gobi QDL device */
  42         {USB_DEVICE(0x05c6, 0x9001)},   /* Generic Gobi Modem device */
  43         {USB_DEVICE(0x05c6, 0x9002)},   /* Generic Gobi Modem device */
  44         {USB_DEVICE(0x05c6, 0x9202)},   /* Generic Gobi Modem device */
  45         {USB_DEVICE(0x05c6, 0x9203)},   /* Generic Gobi Modem device */
  46         {USB_DEVICE(0x05c6, 0x9222)},   /* Generic Gobi Modem device */
  47         {USB_DEVICE(0x05c6, 0x9008)},   /* Generic Gobi QDL device */
  48         {USB_DEVICE(0x05c6, 0x9201)},   /* Generic Gobi QDL device */
  49         {USB_DEVICE(0x05c6, 0x9221)},   /* Generic Gobi QDL device */
  50         {USB_DEVICE(0x05c6, 0x9231)},   /* Generic Gobi QDL device */
  51         {USB_DEVICE(0x1f45, 0x0001)},   /* Unknown Gobi QDL device */
  52         {USB_DEVICE(0x413c, 0x8185)},   /* Dell Gobi 2000 QDL device (N0218, VU936) */
  53         {USB_DEVICE(0x413c, 0x8186)},   /* Dell Gobi 2000 Modem device (N0218, VU936) */
  54         {USB_DEVICE(0x05c6, 0x9208)},   /* Generic Gobi 2000 QDL device */
  55         {USB_DEVICE(0x05c6, 0x920b)},   /* Generic Gobi 2000 Modem device */
  56         {USB_DEVICE(0x05c6, 0x9224)},   /* Sony Gobi 2000 QDL device (N0279, VU730) */
  57         {USB_DEVICE(0x05c6, 0x9225)},   /* Sony Gobi 2000 Modem device (N0279, VU730) */
  58         {USB_DEVICE(0x05c6, 0x9244)},   /* Samsung Gobi 2000 QDL device (VL176) */
  59         {USB_DEVICE(0x05c6, 0x9245)},   /* Samsung Gobi 2000 Modem device (VL176) */
  60         {USB_DEVICE(0x03f0, 0x241d)},   /* HP Gobi 2000 QDL device (VP412) */
  61         {USB_DEVICE(0x03f0, 0x251d)},   /* HP Gobi 2000 Modem device (VP412) */
  62         {USB_DEVICE(0x05c6, 0x9214)},   /* Acer Gobi 2000 QDL device (VP413) */
  63         {USB_DEVICE(0x05c6, 0x9215)},   /* Acer Gobi 2000 Modem device (VP413) */
  64         {USB_DEVICE(0x05c6, 0x9264)},   /* Asus Gobi 2000 QDL device (VR305) */
  65         {USB_DEVICE(0x05c6, 0x9265)},   /* Asus Gobi 2000 Modem device (VR305) */
  66         {USB_DEVICE(0x05c6, 0x9234)},   /* Top Global Gobi 2000 QDL device (VR306) */
  67         {USB_DEVICE(0x05c6, 0x9235)},   /* Top Global Gobi 2000 Modem device (VR306) */
  68         {USB_DEVICE(0x05c6, 0x9274)},   /* iRex Technologies Gobi 2000 QDL device (VR307) */
  69         {USB_DEVICE(0x05c6, 0x9275)},   /* iRex Technologies Gobi 2000 Modem device (VR307) */
  70         {USB_DEVICE(0x1199, 0x9000)},   /* Sierra Wireless Gobi 2000 QDL device (VT773) */
  71         {USB_DEVICE(0x1199, 0x9001)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  72         {USB_DEVICE(0x1199, 0x9002)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  73         {USB_DEVICE(0x1199, 0x9003)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  74         {USB_DEVICE(0x1199, 0x9004)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  75         {USB_DEVICE(0x1199, 0x9005)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  76         {USB_DEVICE(0x1199, 0x9006)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  77         {USB_DEVICE(0x1199, 0x9007)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  78         {USB_DEVICE(0x1199, 0x9008)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  79         {USB_DEVICE(0x1199, 0x9009)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  80         {USB_DEVICE(0x1199, 0x900a)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  81         {USB_DEVICE(0x16d8, 0x8001)},   /* CMDTech Gobi 2000 QDL device (VU922) */
  82         {USB_DEVICE(0x16d8, 0x8002)},   /* CMDTech Gobi 2000 Modem device (VU922) */
  83         {USB_DEVICE(0x05c6, 0x9204)},   /* Gobi 2000 QDL device */
  84         {USB_DEVICE(0x05c6, 0x9205)},   /* Gobi 2000 Modem device */
  85         { }                             /* Terminating entry */
  86 };
  87 MODULE_DEVICE_TABLE(usb, id_table);
  88
  89 static struct usb_driver qcdriver = {
  90         .name                   = "qcserial",
  91         .probe                  = usb_serial_probe,
  92         .disconnect             = usb_serial_disconnect,
  93         .id_table               = id_table,
  94         .suspend                = usb_serial_suspend,
  95         .resume                 = usb_serial_resume,
  96         .supports_autosuspend   = true,
  97 };
  98
  99 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 100 {
 101         struct usb_wwan_intf_private *data;
 102         struct usb_host_interface *intf = serial->interface->cur_altsetting;
 103         int retval = -ENODEV;
 104         __u8 nintf;
 105         __u8 ifnum;
 106
 107         dbg("%s", __func__);
 108
 109         nintf = serial->dev->actconfig->desc.bNumInterfaces;
 110         dbg("Num Interfaces = %d", nintf);
 111         ifnum = intf->desc.bInterfaceNumber;
 112         dbg("This Interface = %d", ifnum);
 113
 114         data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private),
 115                                          GFP_KERNEL);
 116         if (!data)
 117                 return -ENOMEM;
 118
 119         spin_lock_init(&data->susp_lock);
 120
 121         switch (nintf) {
 122         case 1:
 123                 /* QDL mode */
 124                 /* Gobi 2000 has a single altsetting, older ones have two */
 125                 if (serial->interface->num_altsetting == 2)
 126                         intf = &serial->interface->altsetting[1];
 127                 else if (serial->interface->num_altsetting > 2)
 128                         break;
 129
 130                 if (intf->desc.bNumEndpoints == 2 &&
 131                     usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
 132                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
 133                         dbg("QDL port found");
 134
 135                         if (serial->interface->num_altsetting == 1)
 136                                 return 0;
 137
 138                         retval = usb_set_interface(serial->dev, ifnum, 1);
 139                         if (retval < 0) {
 140                                 dev_err(&serial->dev->dev,
 141                                         "Could not set interface, error %d\n",
 142                                         retval);
 143                                 retval = -ENODEV;
 144                                 kfree(data);
 145                         }
 146                         return retval;
 147                 }
 148                 break;
 149
 150         case 3:
 151         case 4:
 152                 /* Composite mode */
 153                 if (ifnum == 2) {
 154                         dbg("Modem port found");
 155                         retval = usb_set_interface(serial->dev, ifnum, 0);
 156                         if (retval < 0) {
 157                                 dev_err(&serial->dev->dev,
 158                                         "Could not set interface, error %d\n",
 159                                         retval);
 160                                 retval = -ENODEV;
 161                                 kfree(data);
 162                         }
 163                         return retval;
 164                 }
 165                 break;
 166
 167         default:
 168                 dev_err(&serial->dev->dev,
 169                         "unknown number of interfaces: %d\n", nintf);
 170                 kfree(data);
 171                 return -ENODEV;
 172         }
 173
 174         return retval;
 175 }
 176
 177 static struct usb_serial_driver qcdevice = {
 178         .driver = {
 179                 .owner     = THIS_MODULE,
 180                 .name      = "qcserial",
 181         },
 182         .description         = "Qualcomm USB modem",
 183         .id_table            = id_table,
 184         .usb_driver          = &qcdriver,
 185         .num_ports           = 1,
 186         .probe               = qcprobe,
 187         .open                = usb_wwan_open,
 188         .close               = usb_wwan_close,
 189         .write               = usb_wwan_write,
 190         .write_room          = usb_wwan_write_room,
 191         .chars_in_buffer     = usb_wwan_chars_in_buffer,
 192         .attach              = usb_wwan_startup,
 193         .disconnect          = usb_wwan_disconnect,
 194         .release             = usb_wwan_release,
 195 #ifdef CONFIG_PM
 196         .suspend             = usb_wwan_suspend,
 197         .resume              = usb_wwan_resume,
 198 #endif
 199 };
 200
 201 static int __init qcinit(void)
 202 {
 203         int retval;
 204
 205         retval = usb_serial_register(&qcdevice);
 206         if (retval)
 207                 return retval;
 208
 209         retval = usb_register(&qcdriver);
 210         if (retval) {
 211                 usb_serial_deregister(&qcdevice);
 212                 return retval;
 213         }
 214
 215         return 0;
 216 }
 217
 218 static void __exit qcexit(void)
 219 {
 220         usb_deregister(&qcdriver);
 221         usb_serial_deregister(&qcdevice);
 222 }
 223
 224 module_init(qcinit);
 225 module_exit(qcexit);
 226
 227 MODULE_AUTHOR(DRIVER_AUTHOR);
 228 MODULE_DESCRIPTION(DRIVER_DESC);
 229 MODULE_LICENSE("GPL v2");
 230
 231 module_param(debug, bool, S_IRUGO | S_IWUSR);
 232 MODULE_PARM_DESC(debug, "Debug enabled or not");