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 = 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 usb_enable_autosuspend(serial->dev); 122 123 switch (nintf) { 124 case 1: 125 /* QDL mode */ 126 /* Gobi 2000 has a single altsetting, older ones have two */ 127 if (serial->interface->num_altsetting == 2) 128 intf = &serial->interface->altsetting[1]; 129 else if (serial->interface->num_altsetting > 2) 130 break; 131 132 if (intf->desc.bNumEndpoints == 2 && 133 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && 134 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { 135 dbg("QDL port found"); 136 137 if (serial->interface->num_altsetting == 1) { 138 retval = 0; /* Success */ 139 break; 140 } 141 142 retval = usb_set_interface(serial->dev, ifnum, 1); 143 if (retval < 0) { 144 dev_err(&serial->dev->dev, 145 "Could not set interface, error %d\n", 146 retval); 147 retval = -ENODEV; 148 kfree(data); 149 } 150 } 151 break; 152 153 case 3: 154 case 4: 155 /* Composite mode */ 156 /* ifnum == 0 is a broadband network adapter */ 157 if (ifnum == 1) { 158 /* 159 * Diagnostics Monitor (serial line 9600 8N1) 160 * Qualcomm DM protocol 161 * use "libqcdm" (ModemManager) for communication 162 */ 163 dbg("Diagnostics Monitor found"); 164 retval = usb_set_interface(serial->dev, ifnum, 0); 165 if (retval < 0) { 166 dev_err(&serial->dev->dev, 167 "Could not set interface, error %d\n", 168 retval); 169 retval = -ENODEV; 170 kfree(data); 171 } 172 } else if (ifnum == 2) { 173 dbg("Modem port found"); 174 retval = usb_set_interface(serial->dev, ifnum, 0); 175 if (retval < 0) { 176 dev_err(&serial->dev->dev, 177 "Could not set interface, error %d\n", 178 retval); 179 retval = -ENODEV; 180 kfree(data); 181 } 182 } else if (ifnum==3) { 183 /* 184 * NMEA (serial line 9600 8N1) 185 * # echo "\$GPS_START" > /dev/ttyUSBx 186 * # echo "\$GPS_STOP" > /dev/ttyUSBx 187 */ 188 dbg("NMEA GPS 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 } 198 break; 199 200 default: 201 dev_err(&serial->dev->dev, 202 "unknown number of interfaces: %d\n", nintf); 203 kfree(data); 204 retval = -ENODEV; 205 } 206 207 /* Set serial->private if not returning -ENODEV */ 208 if (retval != -ENODEV) 209 usb_set_serial_data(serial, data); 210 return retval; 211 } 212 213 static void qc_release(struct usb_serial *serial) 214 { 215 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial); 216 217 dbg("%s", __func__); 218 219 /* Call usb_wwan release & free the private data allocated in qcprobe */ 220 usb_wwan_release(serial); 221 usb_set_serial_data(serial, NULL); 222 kfree(priv); 223 } 224 225 static struct usb_serial_driver qcdevice = { 226 .driver = { 227 .owner = THIS_MODULE, 228 .name = "qcserial", 229 }, 230 .description = "Qualcomm USB modem", 231 .id_table = id_table, 232 .usb_driver = &qcdriver, 233 .num_ports = 1, 234 .probe = qcprobe, 235 .open = usb_wwan_open, 236 .close = usb_wwan_close, 237 .write = usb_wwan_write, 238 .write_room = usb_wwan_write_room, 239 .chars_in_buffer = usb_wwan_chars_in_buffer, 240 .attach = usb_wwan_startup, 241 .disconnect = usb_wwan_disconnect, 242 .release = qc_release, 243 #ifdef CONFIG_PM 244 .suspend = usb_wwan_suspend, 245 .resume = usb_wwan_resume, 246 #endif 247 }; 248 249 static int __init qcinit(void) 250 { 251 int retval; 252 253 retval = usb_serial_register(&qcdevice); 254 if (retval) 255 return retval; 256 257 retval = usb_register(&qcdriver); 258 if (retval) { 259 usb_serial_deregister(&qcdevice); 260 return retval; 261 } 262 263 return 0; 264 } 265 266 static void __exit qcexit(void) 267 { 268 usb_deregister(&qcdriver); 269 usb_serial_deregister(&qcdevice); 270 } 271 272 module_init(qcinit); 273 module_exit(qcexit); 274 275 MODULE_AUTHOR(DRIVER_AUTHOR); 276 MODULE_DESCRIPTION(DRIVER_DESC); 277 MODULE_LICENSE("GPL v2"); 278 279 module_param(debug, bool, S_IRUGO | S_IWUSR); 280 MODULE_PARM_DESC(debug, "Debug enabled or not"); 281