qcserial.c 17 KB

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