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 19 #define DRIVER_AUTHOR "Qualcomm Inc" 20 #define DRIVER_DESC "Qualcomm USB Serial driver" 21 22 static int debug; 23 24 static struct usb_device_id id_table[] = { 25 {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */ 26 {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ 27 {USB_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ 28 {USB_DEVICE(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */ 29 {USB_DEVICE(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */ 30 {USB_DEVICE(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */ 31 {USB_DEVICE(0x413c, 0x8172)}, /* Dell Gobi Modem device */ 32 {USB_DEVICE(0x413c, 0x8171)}, /* Dell Gobi QDL device */ 33 {USB_DEVICE(0x1410, 0xa001)}, /* Novatel Gobi Modem device */ 34 {USB_DEVICE(0x1410, 0xa008)}, /* Novatel Gobi QDL device */ 35 {USB_DEVICE(0x0b05, 0x1776)}, /* Asus Gobi Modem device */ 36 {USB_DEVICE(0x0b05, 0x1774)}, /* Asus Gobi QDL device */ 37 {USB_DEVICE(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */ 38 {USB_DEVICE(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */ 39 {USB_DEVICE(0x1557, 0x0a80)}, /* OQO Gobi QDL device */ 40 {USB_DEVICE(0x05c6, 0x9001)}, /* Generic Gobi Modem device */ 41 {USB_DEVICE(0x05c6, 0x9002)}, /* Generic Gobi Modem device */ 42 {USB_DEVICE(0x05c6, 0x9202)}, /* Generic Gobi Modem device */ 43 {USB_DEVICE(0x05c6, 0x9203)}, /* Generic Gobi Modem device */ 44 {USB_DEVICE(0x05c6, 0x9222)}, /* Generic Gobi Modem device */ 45 {USB_DEVICE(0x05c6, 0x9008)}, /* Generic Gobi QDL device */ 46 {USB_DEVICE(0x05c6, 0x9201)}, /* Generic Gobi QDL device */ 47 {USB_DEVICE(0x05c6, 0x9221)}, /* Generic Gobi QDL device */ 48 {USB_DEVICE(0x05c6, 0x9231)}, /* Generic Gobi QDL device */ 49 {USB_DEVICE(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */ 50 { } /* Terminating entry */ 51 }; 52 MODULE_DEVICE_TABLE(usb, id_table); 53 54 static struct usb_driver qcdriver = { 55 .name = "qcserial", 56 .probe = usb_serial_probe, 57 .disconnect = usb_serial_disconnect, 58 .id_table = id_table, 59 .suspend = usb_serial_suspend, 60 .resume = usb_serial_resume, 61 .supports_autosuspend = true, 62 }; 63 64 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) 65 { 66 int retval = -ENODEV; 67 __u8 nintf; 68 __u8 ifnum; 69 70 dbg("%s", __func__); 71 72 nintf = serial->dev->actconfig->desc.bNumInterfaces; 73 dbg("Num Interfaces = %d", nintf); 74 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; 75 dbg("This Interface = %d", ifnum); 76 77 switch (nintf) { 78 case 1: 79 /* QDL mode */ 80 if (serial->interface->num_altsetting == 2) { 81 struct usb_host_interface *intf; 82 83 intf = &serial->interface->altsetting[1]; 84 if (intf->desc.bNumEndpoints == 2) { 85 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && 86 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { 87 dbg("QDL port found"); 88 retval = usb_set_interface(serial->dev, ifnum, 1); 89 if (retval < 0) { 90 dev_err(&serial->dev->dev, 91 "Could not set interface, error %d\n", 92 retval); 93 retval = -ENODEV; 94 } 95 return retval; 96 } 97 } 98 } 99 break; 100 101 case 4: 102 /* Composite mode */ 103 if (ifnum == 2) { 104 dbg("Modem port found"); 105 retval = usb_set_interface(serial->dev, ifnum, 0); 106 if (retval < 0) { 107 dev_err(&serial->dev->dev, 108 "Could not set interface, error %d\n", 109 retval); 110 retval = -ENODEV; 111 } 112 return retval; 113 } 114 break; 115 116 default: 117 dev_err(&serial->dev->dev, 118 "unknown number of interfaces: %d\n", nintf); 119 return -ENODEV; 120 } 121 122 return retval; 123 } 124 125 static struct usb_serial_driver qcdevice = { 126 .driver = { 127 .owner = THIS_MODULE, 128 .name = "qcserial", 129 }, 130 .description = "Qualcomm USB modem", 131 .id_table = id_table, 132 .usb_driver = &qcdriver, 133 .num_ports = 1, 134 .probe = qcprobe, 135 }; 136 137 static int __init qcinit(void) 138 { 139 int retval; 140 141 retval = usb_serial_register(&qcdevice); 142 if (retval) 143 return retval; 144 145 retval = usb_register(&qcdriver); 146 if (retval) { 147 usb_serial_deregister(&qcdevice); 148 return retval; 149 } 150 151 return 0; 152 } 153 154 static void __exit qcexit(void) 155 { 156 usb_deregister(&qcdriver); 157 usb_serial_deregister(&qcdevice); 158 } 159 160 module_init(qcinit); 161 module_exit(qcexit); 162 163 MODULE_AUTHOR(DRIVER_AUTHOR); 164 MODULE_DESCRIPTION(DRIVER_DESC); 165 MODULE_LICENSE("GPL v2"); 166 167 module_param(debug, bool, S_IRUGO | S_IWUSR); 168 MODULE_PARM_DESC(debug, "Debug enabled or not"); 169