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 { } /* Terminating entry */ 30 }; 31 MODULE_DEVICE_TABLE(usb, id_table); 32 33 static struct usb_driver qcdriver = { 34 .name = "qcserial", 35 .probe = usb_serial_probe, 36 .disconnect = usb_serial_disconnect, 37 .id_table = id_table, 38 .suspend = usb_serial_suspend, 39 .resume = usb_serial_resume, 40 .supports_autosuspend = true, 41 }; 42 43 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) 44 { 45 int retval = -ENODEV; 46 __u8 nintf; 47 __u8 ifnum; 48 49 dbg("%s", __func__); 50 51 nintf = serial->dev->actconfig->desc.bNumInterfaces; 52 dbg("Num Interfaces = %d", nintf); 53 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; 54 dbg("This Interface = %d", ifnum); 55 56 switch (nintf) { 57 case 1: 58 /* QDL mode */ 59 if (serial->interface->num_altsetting == 2) { 60 struct usb_host_interface *intf; 61 62 intf = &serial->interface->altsetting[1]; 63 if (intf->desc.bNumEndpoints == 2) { 64 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && 65 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { 66 dbg("QDL port found"); 67 retval = usb_set_interface(serial->dev, ifnum, 1); 68 if (retval < 0) { 69 dev_err(&serial->dev->dev, 70 "Could not set interface, error %d\n", 71 retval); 72 retval = -ENODEV; 73 } 74 return retval; 75 } 76 } 77 } 78 break; 79 80 case 4: 81 /* Composite mode */ 82 if (ifnum == 2) { 83 dbg("Modem port found"); 84 retval = usb_set_interface(serial->dev, ifnum, 0); 85 if (retval < 0) { 86 dev_err(&serial->dev->dev, 87 "Could not set interface, error %d\n", 88 retval); 89 retval = -ENODEV; 90 } 91 return retval; 92 } 93 break; 94 95 default: 96 dev_err(&serial->dev->dev, 97 "unknown number of interfaces: %d\n", nintf); 98 return -ENODEV; 99 } 100 101 return retval; 102 } 103 104 static struct usb_serial_driver qcdevice = { 105 .driver = { 106 .owner = THIS_MODULE, 107 .name = "qcserial", 108 }, 109 .description = "Qualcomm USB modem", 110 .id_table = id_table, 111 .usb_driver = &qcdriver, 112 .num_ports = 1, 113 .probe = qcprobe, 114 }; 115 116 static int __init qcinit(void) 117 { 118 int retval; 119 120 retval = usb_serial_register(&qcdevice); 121 if (retval) 122 return retval; 123 124 retval = usb_register(&qcdriver); 125 if (retval) { 126 usb_serial_deregister(&qcdevice); 127 return retval; 128 } 129 130 return 0; 131 } 132 133 static void __exit qcexit(void) 134 { 135 usb_deregister(&qcdriver); 136 usb_serial_deregister(&qcdevice); 137 } 138 139 module_init(qcinit); 140 module_exit(qcexit); 141 142 MODULE_AUTHOR(DRIVER_AUTHOR); 143 MODULE_DESCRIPTION(DRIVER_DESC); 144 MODULE_LICENSE("GPL v2"); 145 146 module_param(debug, bool, S_IRUGO | S_IWUSR); 147 MODULE_PARM_DESC(debug, "Debug enabled or not"); 148