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