diff options
author | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-17 22:39:56 -0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-24 16:20:32 -0700 |
commit | a78b42824dd7c2b40d72fb01f1b1842f7e845f3a (patch) | |
tree | f09ecfaaac5bc842d0de1fed45d8c2539674612f /drivers/usb/serial/qcserial.c | |
parent | 3d940b7d27c5fec35de66449836ab9a01575447c (diff) |
USB: serial: add qualcomm wireless modem driver
Driver originally written by Qualcomm, but rewritten by me due to the
totally different coding style. Cleaned up the probe logic to make a
bit more sense, this is one wierd device. They could have prevented all
of this by just writing sane firmware for the modem.
Cc: Tamm Liu <tamml@qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/qcserial.c')
-rw-r--r-- | drivers/usb/serial/qcserial.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c new file mode 100644 index 00000000000..6c6add50fea --- /dev/null +++ b/drivers/usb/serial/qcserial.c @@ -0,0 +1,145 @@ +/* + * Qualcomm Serial USB driver + * + * Copyright (c) 2008 QUALCOMM Incorporated. + * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de> + * Copyright (c) 2009 Novell Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + */ + +#include <linux/tty.h> +#include <linux/tty_flip.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> + +#define DRIVER_AUTHOR "Qualcomm Inc" +#define DRIVER_DESC "Qualcomm USB Serial driver" + +static int debug; + +static struct usb_device_id id_table[] = { + {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */ + {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ + { } /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, id_table); + +static struct usb_driver qcdriver = { + .name = "qcserial", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, + .suspend = usb_serial_suspend, + .resume = usb_serial_resume, + .supports_autosuspend = true, +}; + +static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) +{ + int retval = -ENODEV; + __u8 nintf; + __u8 ifnum; + + dbg("%s", __func__); + + nintf = serial->dev->actconfig->desc.bNumInterfaces; + dbg("Num Interfaces = %d", nintf); + ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; + dbg("This Interface = %d", ifnum); + + switch (nintf) { + case 1: + /* QDL mode */ + if (serial->interface->num_altsetting == 2) { + struct usb_host_interface *intf; + + intf = &serial->interface->altsetting[1]; + if (intf->desc.bNumEndpoints == 2) { + if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && + usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { + dbg("QDL port found"); + retval = usb_set_interface(serial->dev, ifnum, 1); + if (retval < 0) { + dev_err(&serial->dev->dev, + "Could not set interface, error %d\n", + retval); + retval = -ENODEV; + } + return retval; + } + } + } + break; + + case 4: + /* Composite mode */ + if (ifnum == 2) { + dbg("Modem port found"); + retval = usb_set_interface(serial->dev, ifnum, 0); + if (retval < 0) { + dev_err(&serial->dev->dev, + "Could not set interface, error %d\n", + retval); + retval = -ENODEV; + } + return retval; + } + break; + + default: + dev_err(&serial->dev->dev, + "unknown number of interfaces: %d\n", nintf); + return -ENODEV; + } + + return retval; +} + +static struct usb_serial_driver qcdevice = { + .driver = { + .owner = THIS_MODULE, + .name = "qcserial", + }, + .description = "Qualcomm USB modem", + .id_table = id_table, + .usb_driver = &qcdriver, + .num_ports = 1, + .probe = qcprobe, +}; + +static int __init qcinit(void) +{ + int retval; + + retval = usb_serial_register(&qcdevice); + if (retval) + return retval; + + retval = usb_register(&qcdriver); + if (retval) { + usb_serial_deregister(&qcdevice); + return retval; + } + + return 0; +} + +static void __exit qcexit(void) +{ + usb_deregister(&qcdriver); + usb_serial_deregister(&qcdevice); +} + +module_init(qcinit); +module_exit(qcexit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL v2"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not"); |