1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Qualcomm Serial USB driver 4 * 5 * Copyright (c) 2008 QUALCOMM Incorporated. 6 * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de> 7 * Copyright (c) 2009 Novell Inc. 8 */ 9 10 #include <linux/tty.h> 11 #include <linux/tty_flip.h> 12 #include <linux/module.h> 13 #include <linux/usb.h> 14 #include <linux/usb/serial.h> 15 #include <linux/slab.h> 16 #include "usb-wwan.h" 17 18 #define DRIVER_AUTHOR "Qualcomm Inc" 19 #define DRIVER_DESC "Qualcomm USB Serial driver" 20 21 #define QUECTEL_EC20_PID 0x9215 22 23 /* standard device layouts supported by this driver */ 24 enum qcserial_layouts { 25 QCSERIAL_G2K = 0, /* Gobi 2000 */ 26 QCSERIAL_G1K = 1, /* Gobi 1000 */ 27 QCSERIAL_SWI = 2, /* Sierra Wireless */ 28 QCSERIAL_HWI = 3, /* Huawei */ 29 }; 30 31 #define DEVICE_G1K(v, p) \ 32 USB_DEVICE(v, p), .driver_info = QCSERIAL_G1K 33 #define DEVICE_SWI(v, p) \ 34 USB_DEVICE(v, p), .driver_info = QCSERIAL_SWI 35 #define DEVICE_HWI(v, p) \ 36 USB_DEVICE(v, p), .driver_info = QCSERIAL_HWI 37 38 static const struct usb_device_id id_table[] = { 39 /* Gobi 1000 devices */ 40 {DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */ 41 {DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ 42 {DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ 43 {DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */ 44 {DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */ 45 {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */ 46 {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */ 47 {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */ 48 {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */ 49 {DEVICE_G1K(0x1410, 0xa002)}, /* Novatel Gobi Modem device */ 50 {DEVICE_G1K(0x1410, 0xa003)}, /* Novatel Gobi Modem device */ 51 {DEVICE_G1K(0x1410, 0xa004)}, /* Novatel Gobi Modem device */ 52 {DEVICE_G1K(0x1410, 0xa005)}, /* Novatel Gobi Modem device */ 53 {DEVICE_G1K(0x1410, 0xa006)}, /* Novatel Gobi Modem device */ 54 {DEVICE_G1K(0x1410, 0xa007)}, /* Novatel Gobi Modem device */ 55 {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */ 56 {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */ 57 {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */ 58 {DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */ 59 {DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */ 60 {DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */ 61 {DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */ 62 {DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */ 63 {DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */ 64 {DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */ 65 {DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */ 66 {DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */ 67 {DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */ 68 {DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */ 69 {DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */ 70 {DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */ 71 {DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */ 72 {DEVICE_G1K(0x1bc7, 0x900e)}, /* Telit Gobi QDL device */ 73 74 /* Gobi 2000 devices */ 75 {USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */ 76 {USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */ 77 {USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */ 78 {USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */ 79 {USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */ 80 {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */ 81 {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */ 82 {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */ 83 {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */ 84 {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */ 85 {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */ 86 {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */ 87 {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */ 88 {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */ 89 {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */ 90 {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */ 91 {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */ 92 {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */ 93 {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */ 94 {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */ 95 {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */ 96 {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */ 97 {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */ 98 {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */ 99 {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 100 {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 101 {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 102 {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 103 {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 104 {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 105 {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 106 {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 107 {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 108 {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 109 {USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */ 110 {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */ 111 {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */ 112 {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */ 113 {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */ 114 115 /* Gobi 3000 devices */ 116 {USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */ 117 {USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */ 118 {USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */ 119 {USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */ 120 {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */ 121 {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */ 122 {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */ 123 {USB_DEVICE(0x413c, 0x81a6)}, /* Dell DW5570 QDL (MC8805) */ 124 {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */ 125 {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */ 126 {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */ 127 {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */ 128 {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */ 129 {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */ 130 {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */ 131 {USB_DEVICE(0x1199, 0x9014)}, /* Sierra Wireless Gobi 3000 QDL */ 132 {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */ 133 {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */ 134 {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */ 135 {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */ 136 {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */ 137 {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */ 138 {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */ 139 140 /* non-Gobi Sierra Wireless devices */ 141 {DEVICE_SWI(0x03f0, 0x4e1d)}, /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */ 142 {DEVICE_SWI(0x0f3d, 0x68a2)}, /* Sierra Wireless MC7700 */ 143 {DEVICE_SWI(0x114f, 0x68a2)}, /* Sierra Wireless MC7750 */ 144 {DEVICE_SWI(0x1199, 0x68a2)}, /* Sierra Wireless MC7710 */ 145 {DEVICE_SWI(0x1199, 0x68c0)}, /* Sierra Wireless MC7304/MC7354 */ 146 {DEVICE_SWI(0x1199, 0x901c)}, /* Sierra Wireless EM7700 */ 147 {DEVICE_SWI(0x1199, 0x901e)}, /* Sierra Wireless EM7355 QDL */ 148 {DEVICE_SWI(0x1199, 0x901f)}, /* Sierra Wireless EM7355 */ 149 {DEVICE_SWI(0x1199, 0x9040)}, /* Sierra Wireless Modem */ 150 {DEVICE_SWI(0x1199, 0x9041)}, /* Sierra Wireless MC7305/MC7355 */ 151 {DEVICE_SWI(0x1199, 0x9051)}, /* Netgear AirCard 340U */ 152 {DEVICE_SWI(0x1199, 0x9053)}, /* Sierra Wireless Modem */ 153 {DEVICE_SWI(0x1199, 0x9054)}, /* Sierra Wireless Modem */ 154 {DEVICE_SWI(0x1199, 0x9055)}, /* Netgear AirCard 341U */ 155 {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */ 156 {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */ 157 {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */ 158 {DEVICE_SWI(0x1199, 0x9062)}, /* Sierra Wireless EM7305 QDL */ 159 {DEVICE_SWI(0x1199, 0x9063)}, /* Sierra Wireless EM7305 */ 160 {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */ 161 {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */ 162 {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */ 163 {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */ 164 {DEVICE_SWI(0x1199, 0x907a)}, /* Sierra Wireless EM74xx QDL */ 165 {DEVICE_SWI(0x1199, 0x907b)}, /* Sierra Wireless EM74xx */ 166 {DEVICE_SWI(0x1199, 0x9090)}, /* Sierra Wireless EM7565 QDL */ 167 {DEVICE_SWI(0x1199, 0x9091)}, /* Sierra Wireless EM7565 */ 168 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */ 169 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */ 170 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */ 171 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */ 172 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */ 173 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */ 174 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */ 175 {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */ 176 {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */ 177 {DEVICE_SWI(0x413c, 0x81cb)}, /* Dell Wireless 5816e QDL */ 178 {DEVICE_SWI(0x413c, 0x81cc)}, /* Dell Wireless 5816e */ 179 {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */ 180 {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */ 181 {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */ 182 {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */ 183 184 /* Huawei devices */ 185 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */ 186 187 { } /* Terminating entry */ 188 }; 189 MODULE_DEVICE_TABLE(usb, id_table); 190 191 static int handle_quectel_ec20(struct device *dev, int ifnum) 192 { 193 int altsetting = 0; 194 195 /* 196 * Quectel EC20 Mini PCIe LTE module layout: 197 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 198 * 1: NMEA 199 * 2: AT-capable modem port 200 * 3: Modem interface 201 * 4: NDIS 202 */ 203 switch (ifnum) { 204 case 0: 205 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n"); 206 break; 207 case 1: 208 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n"); 209 break; 210 case 2: 211 case 3: 212 dev_dbg(dev, "Quectel EC20 Modem port found\n"); 213 break; 214 case 4: 215 /* Don't claim the QMI/net interface */ 216 altsetting = -1; 217 break; 218 } 219 220 return altsetting; 221 } 222 223 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) 224 { 225 struct usb_host_interface *intf = serial->interface->cur_altsetting; 226 struct device *dev = &serial->dev->dev; 227 int retval = -ENODEV; 228 __u8 nintf; 229 __u8 ifnum; 230 int altsetting = -1; 231 bool sendsetup = false; 232 233 /* we only support vendor specific functions */ 234 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC) 235 goto done; 236 237 nintf = serial->dev->actconfig->desc.bNumInterfaces; 238 dev_dbg(dev, "Num Interfaces = %d\n", nintf); 239 ifnum = intf->desc.bInterfaceNumber; 240 dev_dbg(dev, "This Interface = %d\n", ifnum); 241 242 if (nintf == 1) { 243 /* QDL mode */ 244 /* Gobi 2000 has a single altsetting, older ones have two */ 245 if (serial->interface->num_altsetting == 2) 246 intf = usb_altnum_to_altsetting(serial->interface, 1); 247 else if (serial->interface->num_altsetting > 2) 248 goto done; 249 250 if (intf && intf->desc.bNumEndpoints == 2 && 251 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && 252 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { 253 dev_dbg(dev, "QDL port found\n"); 254 255 if (serial->interface->num_altsetting == 1) 256 retval = 0; /* Success */ 257 else 258 altsetting = 1; 259 } 260 goto done; 261 262 } 263 264 /* default to enabling interface */ 265 altsetting = 0; 266 267 /* 268 * Composite mode; don't bind to the QMI/net interface as that 269 * gets handled by other drivers. 270 */ 271 272 switch (id->driver_info) { 273 case QCSERIAL_G1K: 274 /* 275 * Gobi 1K USB layout: 276 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 277 * 1: serial port (doesn't respond) 278 * 2: AT-capable modem port 279 * 3: QMI/net 280 */ 281 if (nintf < 3 || nintf > 4) { 282 dev_err(dev, "unknown number of interfaces: %d\n", nintf); 283 altsetting = -1; 284 goto done; 285 } 286 287 if (ifnum == 0) { 288 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n"); 289 altsetting = 1; 290 } else if (ifnum == 2) 291 dev_dbg(dev, "Modem port found\n"); 292 else 293 altsetting = -1; 294 break; 295 case QCSERIAL_G2K: 296 /* handle non-standard layouts */ 297 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) { 298 altsetting = handle_quectel_ec20(dev, ifnum); 299 goto done; 300 } 301 302 /* 303 * Gobi 2K+ USB layout: 304 * 0: QMI/net 305 * 1: DM/DIAG (use libqcdm from ModemManager for communication) 306 * 2: AT-capable modem port 307 * 3: NMEA 308 */ 309 if (nintf < 3 || nintf > 4) { 310 dev_err(dev, "unknown number of interfaces: %d\n", nintf); 311 altsetting = -1; 312 goto done; 313 } 314 315 switch (ifnum) { 316 case 0: 317 /* Don't claim the QMI/net interface */ 318 altsetting = -1; 319 break; 320 case 1: 321 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n"); 322 break; 323 case 2: 324 dev_dbg(dev, "Modem port found\n"); 325 break; 326 case 3: 327 /* 328 * NMEA (serial line 9600 8N1) 329 * # echo "\$GPS_START" > /dev/ttyUSBx 330 * # echo "\$GPS_STOP" > /dev/ttyUSBx 331 */ 332 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n"); 333 break; 334 } 335 break; 336 case QCSERIAL_SWI: 337 /* 338 * Sierra Wireless layout: 339 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 340 * 2: NMEA 341 * 3: AT-capable modem port 342 * 8: QMI/net 343 */ 344 switch (ifnum) { 345 case 0: 346 dev_dbg(dev, "DM/DIAG interface found\n"); 347 break; 348 case 2: 349 dev_dbg(dev, "NMEA GPS interface found\n"); 350 sendsetup = true; 351 break; 352 case 3: 353 dev_dbg(dev, "Modem port found\n"); 354 sendsetup = true; 355 break; 356 default: 357 /* don't claim any unsupported interface */ 358 altsetting = -1; 359 break; 360 } 361 break; 362 case QCSERIAL_HWI: 363 /* 364 * Huawei devices map functions by subclass + protocol 365 * instead of interface numbers. The protocol identify 366 * a specific function, while the subclass indicate a 367 * specific firmware source 368 * 369 * This is a list of functions known to be non-serial. The rest 370 * are assumed to be serial and will be handled by this driver 371 */ 372 switch (intf->desc.bInterfaceProtocol) { 373 /* QMI combined (qmi_wwan) */ 374 case 0x07: 375 case 0x37: 376 case 0x67: 377 /* QMI data (qmi_wwan) */ 378 case 0x08: 379 case 0x38: 380 case 0x68: 381 /* QMI control (qmi_wwan) */ 382 case 0x09: 383 case 0x39: 384 case 0x69: 385 /* NCM like (huawei_cdc_ncm) */ 386 case 0x16: 387 case 0x46: 388 case 0x76: 389 altsetting = -1; 390 break; 391 default: 392 dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n", 393 intf->desc.bInterfaceClass, 394 intf->desc.bInterfaceSubClass, 395 intf->desc.bInterfaceProtocol); 396 } 397 break; 398 default: 399 dev_err(dev, "unsupported device layout type: %lu\n", 400 id->driver_info); 401 break; 402 } 403 404 done: 405 if (altsetting >= 0) { 406 retval = usb_set_interface(serial->dev, ifnum, altsetting); 407 if (retval < 0) { 408 dev_err(dev, 409 "Could not set interface, error %d\n", 410 retval); 411 retval = -ENODEV; 412 } 413 } 414 415 if (!retval) 416 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup); 417 418 return retval; 419 } 420 421 static int qc_attach(struct usb_serial *serial) 422 { 423 struct usb_wwan_intf_private *data; 424 bool sendsetup; 425 426 data = kzalloc(sizeof(*data), GFP_KERNEL); 427 if (!data) 428 return -ENOMEM; 429 430 sendsetup = !!(unsigned long)(usb_get_serial_data(serial)); 431 if (sendsetup) 432 data->use_send_setup = 1; 433 434 spin_lock_init(&data->susp_lock); 435 436 usb_set_serial_data(serial, data); 437 438 return 0; 439 } 440 441 static void qc_release(struct usb_serial *serial) 442 { 443 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial); 444 445 usb_set_serial_data(serial, NULL); 446 kfree(priv); 447 } 448 449 static struct usb_serial_driver qcdevice = { 450 .driver = { 451 .owner = THIS_MODULE, 452 .name = "qcserial", 453 }, 454 .description = "Qualcomm USB modem", 455 .id_table = id_table, 456 .num_ports = 1, 457 .probe = qcprobe, 458 .open = usb_wwan_open, 459 .close = usb_wwan_close, 460 .dtr_rts = usb_wwan_dtr_rts, 461 .write = usb_wwan_write, 462 .write_room = usb_wwan_write_room, 463 .chars_in_buffer = usb_wwan_chars_in_buffer, 464 .tiocmget = usb_wwan_tiocmget, 465 .tiocmset = usb_wwan_tiocmset, 466 .attach = qc_attach, 467 .release = qc_release, 468 .port_probe = usb_wwan_port_probe, 469 .port_remove = usb_wwan_port_remove, 470 #ifdef CONFIG_PM 471 .suspend = usb_wwan_suspend, 472 .resume = usb_wwan_resume, 473 #endif 474 }; 475 476 static struct usb_serial_driver * const serial_drivers[] = { 477 &qcdevice, NULL 478 }; 479 480 module_usb_serial_driver(serial_drivers, id_table); 481 482 MODULE_AUTHOR(DRIVER_AUTHOR); 483 MODULE_DESCRIPTION(DRIVER_DESC); 484 MODULE_LICENSE("GPL v2"); 485