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/module.h>
  17 #include <linux/usb.h>
  18 #include <linux/usb/serial.h>
  19 #include <linux/slab.h>
  20 #include "usb-wwan.h"
  21
  22 #define DRIVER_AUTHOR "Qualcomm Inc"
  23 #define DRIVER_DESC "Qualcomm USB Serial driver"
  24
  25 #define DEVICE_G1K(v, p) \
  26         USB_DEVICE(v, p), .driver_info = 1
  27
  28 static const struct usb_device_id id_table[] = {
  29         /* Gobi 1000 devices */
  30         {DEVICE_G1K(0x05c6, 0x9211)},   /* Acer Gobi QDL device */
  31         {DEVICE_G1K(0x05c6, 0x9212)},   /* Acer Gobi Modem Device */
  32         {DEVICE_G1K(0x03f0, 0x1f1d)},   /* HP un2400 Gobi Modem Device */
  33         {DEVICE_G1K(0x03f0, 0x201d)},   /* HP un2400 Gobi QDL Device */
  34         {DEVICE_G1K(0x04da, 0x250d)},   /* Panasonic Gobi Modem device */
  35         {DEVICE_G1K(0x04da, 0x250c)},   /* Panasonic Gobi QDL device */
  36         {DEVICE_G1K(0x413c, 0x8172)},   /* Dell Gobi Modem device */
  37         {DEVICE_G1K(0x413c, 0x8171)},   /* Dell Gobi QDL device */
  38         {DEVICE_G1K(0x1410, 0xa001)},   /* Novatel Gobi Modem device */
  39         {DEVICE_G1K(0x1410, 0xa008)},   /* Novatel Gobi QDL device */
  40         {DEVICE_G1K(0x0b05, 0x1776)},   /* Asus Gobi Modem device */
  41         {DEVICE_G1K(0x0b05, 0x1774)},   /* Asus Gobi QDL device */
  42         {DEVICE_G1K(0x19d2, 0xfff3)},   /* ONDA Gobi Modem device */
  43         {DEVICE_G1K(0x19d2, 0xfff2)},   /* ONDA Gobi QDL device */
  44         {DEVICE_G1K(0x1557, 0x0a80)},   /* OQO Gobi QDL device */
  45         {DEVICE_G1K(0x05c6, 0x9001)},   /* Generic Gobi Modem device */
  46         {DEVICE_G1K(0x05c6, 0x9002)},   /* Generic Gobi Modem device */
  47         {DEVICE_G1K(0x05c6, 0x9202)},   /* Generic Gobi Modem device */
  48         {DEVICE_G1K(0x05c6, 0x9203)},   /* Generic Gobi Modem device */
  49         {DEVICE_G1K(0x05c6, 0x9222)},   /* Generic Gobi Modem device */
  50         {DEVICE_G1K(0x05c6, 0x9008)},   /* Generic Gobi QDL device */
  51         {DEVICE_G1K(0x05c6, 0x9009)},   /* Generic Gobi Modem device */
  52         {DEVICE_G1K(0x05c6, 0x9201)},   /* Generic Gobi QDL device */
  53         {DEVICE_G1K(0x05c6, 0x9221)},   /* Generic Gobi QDL device */
  54         {DEVICE_G1K(0x05c6, 0x9231)},   /* Generic Gobi QDL device */
  55         {DEVICE_G1K(0x1f45, 0x0001)},   /* Unknown Gobi QDL device */
  56
  57         /* Gobi 2000 devices */
  58         {USB_DEVICE(0x1410, 0xa010)},   /* Novatel Gobi 2000 QDL device */
  59         {USB_DEVICE(0x1410, 0xa011)},   /* Novatel Gobi 2000 QDL device */
  60         {USB_DEVICE(0x1410, 0xa012)},   /* Novatel Gobi 2000 QDL device */
  61         {USB_DEVICE(0x1410, 0xa013)},   /* Novatel Gobi 2000 QDL device */
  62         {USB_DEVICE(0x1410, 0xa014)},   /* Novatel Gobi 2000 QDL device */
  63         {USB_DEVICE(0x413c, 0x8185)},   /* Dell Gobi 2000 QDL device (N0218, VU936) */
  64         {USB_DEVICE(0x413c, 0x8186)},   /* Dell Gobi 2000 Modem device (N0218, VU936) */
  65         {USB_DEVICE(0x05c6, 0x9208)},   /* Generic Gobi 2000 QDL device */
  66         {USB_DEVICE(0x05c6, 0x920b)},   /* Generic Gobi 2000 Modem device */
  67         {USB_DEVICE(0x05c6, 0x9224)},   /* Sony Gobi 2000 QDL device (N0279, VU730) */
  68         {USB_DEVICE(0x05c6, 0x9225)},   /* Sony Gobi 2000 Modem device (N0279, VU730) */
  69         {USB_DEVICE(0x05c6, 0x9244)},   /* Samsung Gobi 2000 QDL device (VL176) */
  70         {USB_DEVICE(0x05c6, 0x9245)},   /* Samsung Gobi 2000 Modem device (VL176) */
  71         {USB_DEVICE(0x03f0, 0x241d)},   /* HP Gobi 2000 QDL device (VP412) */
  72         {USB_DEVICE(0x03f0, 0x251d)},   /* HP Gobi 2000 Modem device (VP412) */
  73         {USB_DEVICE(0x05c6, 0x9214)},   /* Acer Gobi 2000 QDL device (VP413) */
  74         {USB_DEVICE(0x05c6, 0x9215)},   /* Acer Gobi 2000 Modem device (VP413) */
  75         {USB_DEVICE(0x05c6, 0x9264)},   /* Asus Gobi 2000 QDL device (VR305) */
  76         {USB_DEVICE(0x05c6, 0x9265)},   /* Asus Gobi 2000 Modem device (VR305) */
  77         {USB_DEVICE(0x05c6, 0x9234)},   /* Top Global Gobi 2000 QDL device (VR306) */
  78         {USB_DEVICE(0x05c6, 0x9235)},   /* Top Global Gobi 2000 Modem device (VR306) */
  79         {USB_DEVICE(0x05c6, 0x9274)},   /* iRex Technologies Gobi 2000 QDL device (VR307) */
  80         {USB_DEVICE(0x05c6, 0x9275)},   /* iRex Technologies Gobi 2000 Modem device (VR307) */
  81         {USB_DEVICE(0x1199, 0x9000)},   /* Sierra Wireless Gobi 2000 QDL device (VT773) */
  82         {USB_DEVICE(0x1199, 0x9001)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  83         {USB_DEVICE(0x1199, 0x9002)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  84         {USB_DEVICE(0x1199, 0x9003)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  85         {USB_DEVICE(0x1199, 0x9004)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  86         {USB_DEVICE(0x1199, 0x9005)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  87         {USB_DEVICE(0x1199, 0x9006)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  88         {USB_DEVICE(0x1199, 0x9007)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  89         {USB_DEVICE(0x1199, 0x9008)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  90         {USB_DEVICE(0x1199, 0x9009)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  91         {USB_DEVICE(0x1199, 0x900a)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  92         {USB_DEVICE(0x1199, 0x9011)},   /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
  93         {USB_DEVICE(0x16d8, 0x8001)},   /* CMDTech Gobi 2000 QDL device (VU922) */
  94         {USB_DEVICE(0x16d8, 0x8002)},   /* CMDTech Gobi 2000 Modem device (VU922) */
  95         {USB_DEVICE(0x05c6, 0x9204)},   /* Gobi 2000 QDL device */
  96         {USB_DEVICE(0x05c6, 0x9205)},   /* Gobi 2000 Modem device */
  97
  98         /* Gobi 3000 devices */
  99         {USB_DEVICE(0x03f0, 0x371d)},   /* HP un2430 Gobi 3000 QDL */
 100         {USB_DEVICE(0x05c6, 0x920c)},   /* Gobi 3000 QDL */
 101         {USB_DEVICE(0x05c6, 0x920d)},   /* Gobi 3000 Composite */
 102         {USB_DEVICE(0x1410, 0xa020)},   /* Novatel Gobi 3000 QDL */
 103         {USB_DEVICE(0x1410, 0xa021)},   /* Novatel Gobi 3000 Composite */
 104         {USB_DEVICE(0x413c, 0x8193)},   /* Dell Gobi 3000 QDL */
 105         {USB_DEVICE(0x413c, 0x8194)},   /* Dell Gobi 3000 Composite */
 106         {USB_DEVICE(0x1199, 0x68a4)},   /* Sierra Wireless QDL */
 107         {USB_DEVICE(0x1199, 0x68a5)},   /* Sierra Wireless Modem */
 108         {USB_DEVICE(0x1199, 0x68a8)},   /* Sierra Wireless QDL */
 109         {USB_DEVICE(0x1199, 0x68a9)},   /* Sierra Wireless Modem */
 110         {USB_DEVICE(0x1199, 0x9010)},   /* Sierra Wireless Gobi 3000 QDL */
 111         {USB_DEVICE(0x1199, 0x9012)},   /* Sierra Wireless Gobi 3000 QDL */
 112         {USB_DEVICE(0x1199, 0x9013)},   /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
 113         {USB_DEVICE(0x1199, 0x9014)},   /* Sierra Wireless Gobi 3000 QDL */
 114         {USB_DEVICE(0x1199, 0x9015)},   /* Sierra Wireless Gobi 3000 Modem device */
 115         {USB_DEVICE(0x1199, 0x9018)},   /* Sierra Wireless Gobi 3000 QDL */
 116         {USB_DEVICE(0x1199, 0x9019)},   /* Sierra Wireless Gobi 3000 Modem device */
 117         {USB_DEVICE(0x1199, 0x901b)},   /* Sierra Wireless MC7770 */
 118         {USB_DEVICE(0x12D1, 0x14F0)},   /* Sony Gobi 3000 QDL */
 119         {USB_DEVICE(0x12D1, 0x14F1)},   /* Sony Gobi 3000 Composite */
 120
 121         /* non Gobi Qualcomm serial devices */
 122         {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)},       /* Sierra Wireless MC7700 Device Management */
 123         {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 2)},       /* Sierra Wireless MC7700 NMEA */
 124         {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 3)},       /* Sierra Wireless MC7700 Modem */
 125         {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 0)},       /* Sierra Wireless MC7750 Device Management */
 126         {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 2)},       /* Sierra Wireless MC7750 NMEA */
 127         {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 3)},       /* Sierra Wireless MC7750 Modem */
 128         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)},       /* Sierra Wireless MC7710 Device Management */
 129         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)},       /* Sierra Wireless MC7710 NMEA */
 130         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)},       /* Sierra Wireless MC7710 Modem */
 131         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)},       /* Sierra Wireless EM7700 Device Management */
 132         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)},       /* Sierra Wireless EM7700 NMEA */
 133         {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)},       /* Sierra Wireless EM7700 Modem */
 134
 135         { }                             /* Terminating entry */
 136 };
 137 MODULE_DEVICE_TABLE(usb, id_table);
 138
 139 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 140 {
 141         struct usb_host_interface *intf = serial->interface->cur_altsetting;
 142         struct device *dev = &serial->dev->dev;
 143         int retval = -ENODEV;
 144         __u8 nintf;
 145         __u8 ifnum;
 146         bool is_gobi1k = id->driver_info ? true : false;
 147         int altsetting = -1;
 148
 149         dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k);
 150
 151         nintf = serial->dev->actconfig->desc.bNumInterfaces;
 152         dev_dbg(dev, "Num Interfaces = %d\n", nintf);
 153         ifnum = intf->desc.bInterfaceNumber;
 154         dev_dbg(dev, "This Interface = %d\n", ifnum);
 155
 156         if (nintf == 1) {
 157                 /* QDL mode */
 158                 /* Gobi 2000 has a single altsetting, older ones have two */
 159                 if (serial->interface->num_altsetting == 2)
 160                         intf = &serial->interface->altsetting[1];
 161                 else if (serial->interface->num_altsetting > 2)
 162                         goto done;
 163
 164                 if (intf->desc.bNumEndpoints == 2 &&
 165                     usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
 166                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
 167                         dev_dbg(dev, "QDL port found\n");
 168
 169                         if (serial->interface->num_altsetting == 1)
 170                                 retval = 0; /* Success */
 171                         else
 172                                 altsetting = 1;
 173                 }
 174                 goto done;
 175
 176         }
 177
 178         /* allow any number of interfaces when doing direct interface match */
 179         if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) {
 180                 dev_dbg(dev, "Generic Qualcomm serial interface found\n");
 181                 altsetting = 0;
 182                 goto done;
 183         }
 184
 185         if (nintf < 3 || nintf > 4) {
 186                 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
 187                 goto done;
 188         }
 189
 190         /* default to enabling interface */
 191         altsetting = 0;
 192
 193         /* Composite mode; don't bind to the QMI/net interface as that
 194          * gets handled by other drivers.
 195          */
 196
 197         if (is_gobi1k) {
 198                 /* Gobi 1K USB layout:
 199                  * 0: serial port (doesn't respond)
 200                  * 1: serial port (doesn't respond)
 201                  * 2: AT-capable modem port
 202                  * 3: QMI/net
 203                  */
 204                 if (ifnum == 2)
 205                         dev_dbg(dev, "Modem port found\n");
 206                 else
 207                         altsetting = -1;
 208         } else {
 209                 /* Gobi 2K+ USB layout:
 210                  * 0: QMI/net
 211                  * 1: DM/DIAG (use libqcdm from ModemManager for communication)
 212                  * 2: AT-capable modem port
 213                  * 3: NMEA
 214                  */
 215                 switch (ifnum) {
 216                 case 0:
 217                         /* Don't claim the QMI/net interface */
 218                         altsetting = -1;
 219                         break;
 220                 case 1:
 221                         dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
 222                         break;
 223                 case 2:
 224                         dev_dbg(dev, "Modem port found\n");
 225                         break;
 226                 case 3:
 227                         /*
 228                          * NMEA (serial line 9600 8N1)
 229                          * # echo "\$GPS_START" > /dev/ttyUSBx
 230                          * # echo "\$GPS_STOP"  > /dev/ttyUSBx
 231                          */
 232                         dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
 233                         break;
 234                 }
 235         }
 236
 237 done:
 238         if (altsetting >= 0) {
 239                 retval = usb_set_interface(serial->dev, ifnum, altsetting);
 240                 if (retval < 0) {
 241                         dev_err(dev,
 242                                 "Could not set interface, error %d\n",
 243                                 retval);
 244                         retval = -ENODEV;
 245                 }
 246         }
 247
 248         return retval;
 249 }
 250
 251 static int qc_attach(struct usb_serial *serial)
 252 {
 253         struct usb_wwan_intf_private *data;
 254
 255         data = kzalloc(sizeof(*data), GFP_KERNEL);
 256         if (!data)
 257                 return -ENOMEM;
 258
 259         spin_lock_init(&data->susp_lock);
 260
 261         usb_set_serial_data(serial, data);
 262
 263         return 0;
 264 }
 265
 266 static void qc_release(struct usb_serial *serial)
 267 {
 268         struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
 269
 270         usb_set_serial_data(serial, NULL);
 271         kfree(priv);
 272 }
 273
 274 static struct usb_serial_driver qcdevice = {
 275         .driver = {
 276                 .owner     = THIS_MODULE,
 277                 .name      = "qcserial",
 278         },
 279         .description         = "Qualcomm USB modem",
 280         .id_table            = id_table,
 281         .num_ports           = 1,
 282         .probe               = qcprobe,
 283         .open                = usb_wwan_open,
 284         .close               = usb_wwan_close,
 285         .write               = usb_wwan_write,
 286         .write_room          = usb_wwan_write_room,
 287         .chars_in_buffer     = usb_wwan_chars_in_buffer,
 288         .attach              = qc_attach,
 289         .release             = qc_release,
 290         .port_probe          = usb_wwan_port_probe,
 291         .port_remove         = usb_wwan_port_remove,
 292 #ifdef CONFIG_PM
 293         .suspend             = usb_wwan_suspend,
 294         .resume              = usb_wwan_resume,
 295 #endif
 296 };
 297
 298 static struct usb_serial_driver * const serial_drivers[] = {
 299         &qcdevice, NULL
 300 };
 301
 302 module_usb_serial_driver(serial_drivers, id_table);
 303
 304 MODULE_AUTHOR(DRIVER_AUTHOR);
 305 MODULE_DESCRIPTION(DRIVER_DESC);
 306 MODULE_LICENSE("GPL v2");