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(0x1199, 0x90d2)}, /* Sierra Wireless EM9191 QDL */ 169 {DEVICE_SWI(0x1199, 0x90e4)}, /* Sierra Wireless EM86xx QDL*/ 170 {DEVICE_SWI(0x1199, 0x90e5)}, /* Sierra Wireless EM86xx */ 171 {DEVICE_SWI(0x1199, 0xc080)}, /* Sierra Wireless EM7590 QDL */ 172 {DEVICE_SWI(0x1199, 0xc081)}, /* Sierra Wireless EM7590 */ 173 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */ 174 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */ 175 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */ 176 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */ 177 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */ 178 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */ 179 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */ 180 {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */ 181 {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */ 182 {DEVICE_SWI(0x413c, 0x81c2)}, /* Dell Wireless 5811e */ 183 {DEVICE_SWI(0x413c, 0x81cb)}, /* Dell Wireless 5816e QDL */ 184 {DEVICE_SWI(0x413c, 0x81cc)}, /* Dell Wireless 5816e */ 185 {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */ 186 {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */ 187 {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */ 188 {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */ 189 {DEVICE_SWI(0x413c, 0x8217)}, /* Dell Wireless DW5826e */ 190 {DEVICE_SWI(0x413c, 0x8218)}, /* Dell Wireless DW5826e QDL */ 191 192 /* Huawei devices */ 193 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */ 194 195 { } /* Terminating entry */ 196 }; 197 MODULE_DEVICE_TABLE(usb, id_table); 198 199 static int handle_quectel_ec20(struct device *dev, int ifnum) 200 { 201 int altsetting = 0; 202 203 /* 204 * Quectel EC20 Mini PCIe LTE module layout: 205 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 206 * 1: NMEA 207 * 2: AT-capable modem port 208 * 3: Modem interface 209 * 4: NDIS 210 */ 211 switch (ifnum) { 212 case 0: 213 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n"); 214 break; 215 case 1: 216 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n"); 217 break; 218 case 2: 219 case 3: 220 dev_dbg(dev, "Quectel EC20 Modem port found\n"); 221 break; 222 case 4: 223 /* Don't claim the QMI/net interface */ 224 altsetting = -1; 225 break; 226 } 227 228 return altsetting; 229 } 230 231 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) 232 { 233 struct usb_host_interface *intf = serial->interface->cur_altsetting; 234 struct device *dev = &serial->dev->dev; 235 int retval = -ENODEV; 236 __u8 nintf; 237 __u8 ifnum; 238 int altsetting = -1; 239 bool sendsetup = false; 240 241 /* we only support vendor specific functions */ 242 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC) 243 goto done; 244 245 nintf = serial->dev->actconfig->desc.bNumInterfaces; 246 dev_dbg(dev, "Num Interfaces = %d\n", nintf); 247 ifnum = intf->desc.bInterfaceNumber; 248 dev_dbg(dev, "This Interface = %d\n", ifnum); 249 250 if (nintf == 1) { 251 /* QDL mode */ 252 /* Gobi 2000 has a single altsetting, older ones have two */ 253 if (serial->interface->num_altsetting == 2) 254 intf = usb_altnum_to_altsetting(serial->interface, 1); 255 else if (serial->interface->num_altsetting > 2) 256 goto done; 257 258 if (intf && intf->desc.bNumEndpoints == 2 && 259 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && 260 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { 261 dev_dbg(dev, "QDL port found\n"); 262 263 if (serial->interface->num_altsetting == 1) 264 retval = 0; /* Success */ 265 else 266 altsetting = 1; 267 } 268 goto done; 269 270 } 271 272 /* default to enabling interface */ 273 altsetting = 0; 274 275 /* 276 * Composite mode; don't bind to the QMI/net interface as that 277 * gets handled by other drivers. 278 */ 279 280 switch (id->driver_info) { 281 case QCSERIAL_G1K: 282 /* 283 * Gobi 1K USB layout: 284 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 285 * 1: serial port (doesn't respond) 286 * 2: AT-capable modem port 287 * 3: QMI/net 288 */ 289 if (nintf < 3 || nintf > 4) { 290 dev_err(dev, "unknown number of interfaces: %d\n", nintf); 291 altsetting = -1; 292 goto done; 293 } 294 295 if (ifnum == 0) { 296 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n"); 297 altsetting = 1; 298 } else if (ifnum == 2) 299 dev_dbg(dev, "Modem port found\n"); 300 else 301 altsetting = -1; 302 break; 303 case QCSERIAL_G2K: 304 /* handle non-standard layouts */ 305 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) { 306 altsetting = handle_quectel_ec20(dev, ifnum); 307 goto done; 308 } 309 310 /* 311 * Gobi 2K+ USB layout: 312 * 0: QMI/net 313 * 1: DM/DIAG (use libqcdm from ModemManager for communication) 314 * 2: AT-capable modem port 315 * 3: NMEA 316 */ 317 if (nintf < 3 || nintf > 4) { 318 dev_err(dev, "unknown number of interfaces: %d\n", nintf); 319 altsetting = -1; 320 goto done; 321 } 322 323 switch (ifnum) { 324 case 0: 325 /* Don't claim the QMI/net interface */ 326 altsetting = -1; 327 break; 328 case 1: 329 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n"); 330 break; 331 case 2: 332 dev_dbg(dev, "Modem port found\n"); 333 break; 334 case 3: 335 /* 336 * NMEA (serial line 9600 8N1) 337 * # echo "\$GPS_START" > /dev/ttyUSBx 338 * # echo "\$GPS_STOP" > /dev/ttyUSBx 339 */ 340 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n"); 341 break; 342 } 343 break; 344 case QCSERIAL_SWI: 345 /* 346 * Sierra Wireless layout: 347 * 0: DM/DIAG (use libqcdm from ModemManager for communication) 348 * 2: NMEA 349 * 3: AT-capable modem port 350 * 8: QMI/net 351 */ 352 switch (ifnum) { 353 case 0: 354 dev_dbg(dev, "DM/DIAG interface found\n"); 355 break; 356 case 2: 357 dev_dbg(dev, "NMEA GPS interface found\n"); 358 sendsetup = true; 359 break; 360 case 3: 361 dev_dbg(dev, "Modem port found\n"); 362 sendsetup = true; 363 break; 364 default: 365 /* don't claim any unsupported interface */ 366 altsetting = -1; 367 break; 368 } 369 break; 370 case QCSERIAL_HWI: 371 /* 372 * Huawei devices map functions by subclass + protocol 373 * instead of interface numbers. The protocol identify 374 * a specific function, while the subclass indicate a 375 * specific firmware source 376 * 377 * This is a list of functions known to be non-serial. The rest 378 * are assumed to be serial and will be handled by this driver 379 */ 380 switch (intf->desc.bInterfaceProtocol) { 381 /* QMI combined (qmi_wwan) */ 382 case 0x07: 383 case 0x37: 384 case 0x67: 385 /* QMI data (qmi_wwan) */ 386 case 0x08: 387 case 0x38: 388 case 0x68: 389 /* QMI control (qmi_wwan) */ 390 case 0x09: 391 case 0x39: 392 case 0x69: 393 /* NCM like (huawei_cdc_ncm) */ 394 case 0x16: 395 case 0x46: 396 case 0x76: 397 altsetting = -1; 398 break; 399 default: 400 dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n", 401 intf->desc.bInterfaceClass, 402 intf->desc.bInterfaceSubClass, 403 intf->desc.bInterfaceProtocol); 404 } 405 break; 406 default: 407 dev_err(dev, "unsupported device layout type: %lu\n", 408 id->driver_info); 409 break; 410 } 411 412 done: 413 if (altsetting >= 0) { 414 retval = usb_set_interface(serial->dev, ifnum, altsetting); 415 if (retval < 0) { 416 dev_err(dev, 417 "Could not set interface, error %d\n", 418 retval); 419 retval = -ENODEV; 420 } 421 } 422 423 if (!retval) 424 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup); 425 426 return retval; 427 } 428 429 static int qc_attach(struct usb_serial *serial) 430 { 431 struct usb_wwan_intf_private *data; 432 bool sendsetup; 433 434 data = kzalloc(sizeof(*data), GFP_KERNEL); 435 if (!data) 436 return -ENOMEM; 437 438 sendsetup = !!(unsigned long)(usb_get_serial_data(serial)); 439 if (sendsetup) 440 data->use_send_setup = 1; 441 442 spin_lock_init(&data->susp_lock); 443 444 usb_set_serial_data(serial, data); 445 446 return 0; 447 } 448 449 static void qc_release(struct usb_serial *serial) 450 { 451 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial); 452 453 usb_set_serial_data(serial, NULL); 454 kfree(priv); 455 } 456 457 static struct usb_serial_driver qcdevice = { 458 .driver = { 459 .owner = THIS_MODULE, 460 .name = "qcserial", 461 }, 462 .description = "Qualcomm USB modem", 463 .id_table = id_table, 464 .num_ports = 1, 465 .probe = qcprobe, 466 .open = usb_wwan_open, 467 .close = usb_wwan_close, 468 .dtr_rts = usb_wwan_dtr_rts, 469 .write = usb_wwan_write, 470 .write_room = usb_wwan_write_room, 471 .chars_in_buffer = usb_wwan_chars_in_buffer, 472 .tiocmget = usb_wwan_tiocmget, 473 .tiocmset = usb_wwan_tiocmset, 474 .attach = qc_attach, 475 .release = qc_release, 476 .port_probe = usb_wwan_port_probe, 477 .port_remove = usb_wwan_port_remove, 478 #ifdef CONFIG_PM 479 .suspend = usb_wwan_suspend, 480 .resume = usb_wwan_resume, 481 #endif 482 }; 483 484 static struct usb_serial_driver * const serial_drivers[] = { 485 &qcdevice, NULL 486 }; 487 488 module_usb_serial_driver(serial_drivers, id_table); 489 490 MODULE_AUTHOR(DRIVER_AUTHOR); 491 MODULE_DESCRIPTION(DRIVER_DESC); 492 MODULE_LICENSE("GPL v2"); 493