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linux-next/drivers/usb/serial/qcserial.c
Greg Kroah-Hartman 3d8d7296f7 USB: serial: qcserial.c: use module_usb_serial_driver 
This converts the qcserial.c driver to use the module_usb_serial_driver() call
instead of having to have a module_init/module_exit function, saving a lot
of duplicated code.

CC: Steven Hardy <shardy@redhat.com>
CC: Thomas Tuttle <ttuttle@chromium.org>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-28 13:12:26 -08:00

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/*
* 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/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/slab.h>
#include "usb-wwan.h"
#define DRIVER_AUTHOR "Qualcomm Inc"
#define DRIVER_DESC "Qualcomm USB Serial driver"
static bool debug;
#define DEVICE_G1K(v, p) \
USB_DEVICE(v, p), .driver_info = 1
static const struct usb_device_id id_table[] = {
/* Gobi 1000 devices */
{DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
{DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
{DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
{DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
{DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
{DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
{DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */
{DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */
{DEVICE_G1K(0x1410, 0xa001)}, /* Novatel Gobi Modem device */
{DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
{DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
{DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
{DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
{DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
{DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
{DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
{DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */
{DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
{DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
{DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
{DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
/* Gobi 2000 devices */
{USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */
{USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */
{USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */
{USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */
{USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */
{USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
{USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
{USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
{USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
{USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
{USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
{USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
{USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
{USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
{USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
{USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
{USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
{USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
{USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
{USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
{USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
{USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
{USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
{USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
{USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
{USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
{USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
{USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
{USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
{USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
/* Gobi 3000 devices */
{USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */
{USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */
{USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */
{USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */
{USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
{USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
{USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
{USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
{USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
{USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
{ } /* 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)
{
struct usb_wwan_intf_private *data;
struct usb_host_interface *intf = serial->interface->cur_altsetting;
int retval = -ENODEV;
__u8 nintf;
__u8 ifnum;
bool is_gobi1k = id->driver_info ? true : false;
dbg("%s", __func__);
dbg("Is Gobi 1000 = %d", is_gobi1k);
nintf = serial->dev->actconfig->desc.bNumInterfaces;
dbg("Num Interfaces = %d", nintf);
ifnum = intf->desc.bInterfaceNumber;
dbg("This Interface = %d", ifnum);
data = kzalloc(sizeof(struct usb_wwan_intf_private),
GFP_KERNEL);
if (!data)
return -ENOMEM;
spin_lock_init(&data->susp_lock);
switch (nintf) {
case 1:
/* QDL mode */
/* Gobi 2000 has a single altsetting, older ones have two */
if (serial->interface->num_altsetting == 2)
intf = &serial->interface->altsetting[1];
else if (serial->interface->num_altsetting > 2)
break;
if (intf->desc.bNumEndpoints == 2 &&
usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
dbg("QDL port found");
if (serial->interface->num_altsetting == 1) {
retval = 0; /* Success */
break;
}
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;
kfree(data);
}
}
break;
case 3:
case 4:
/* Composite mode; don't bind to the QMI/net interface as that
* gets handled by other drivers.
*/
/* Gobi 1K USB layout:
* 0: serial port (doesn't respond)
* 1: serial port (doesn't respond)
* 2: AT-capable modem port
* 3: QMI/net
*
* Gobi 2K+ USB layout:
* 0: QMI/net
* 1: DM/DIAG (use libqcdm from ModemManager for communication)
* 2: AT-capable modem port
* 3: NMEA
*/
if (ifnum == 1 && !is_gobi1k) {
dbg("Gobi 2K+ DM/DIAG interface 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;
kfree(data);
}
} else 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;
kfree(data);
}
} else if (ifnum==3 && !is_gobi1k) {
/*
* NMEA (serial line 9600 8N1)
* # echo "\$GPS_START" > /dev/ttyUSBx
* # echo "\$GPS_STOP" > /dev/ttyUSBx
*/
dbg("Gobi 2K+ NMEA GPS interface 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;
kfree(data);
}
}
break;
default:
dev_err(&serial->dev->dev,
"unknown number of interfaces: %d\n", nintf);
kfree(data);
retval = -ENODEV;
}
/* Set serial->private if not returning -ENODEV */
if (retval != -ENODEV)
usb_set_serial_data(serial, data);
return retval;
}
static void qc_release(struct usb_serial *serial)
{
struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
dbg("%s", __func__);
/* Call usb_wwan release & free the private data allocated in qcprobe */
usb_wwan_release(serial);
usb_set_serial_data(serial, NULL);
kfree(priv);
}
static struct usb_serial_driver qcdevice = {
.driver = {
.owner = THIS_MODULE,
.name = "qcserial",
},
.description = "Qualcomm USB modem",
.id_table = id_table,
.num_ports = 1,
.probe = qcprobe,
.open = usb_wwan_open,
.close = usb_wwan_close,
.write = usb_wwan_write,
.write_room = usb_wwan_write_room,
.chars_in_buffer = usb_wwan_chars_in_buffer,
.attach = usb_wwan_startup,
.disconnect = usb_wwan_disconnect,
.release = qc_release,
#ifdef CONFIG_PM
.suspend = usb_wwan_suspend,
.resume = usb_wwan_resume,
#endif
};
static struct usb_serial_driver * const serial_drivers[] = {
&qcdevice, NULL
};
module_usb_serial_driver(qcdriver, serial_drivers);
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");
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