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linux/drivers/usb/serial/qcserial.c
Greg Kroah-Hartman 68e2411345 USB: serial: rework usb_serial_register/deregister_drivers() 
This reworks the usb_serial_register_drivers() and
usb_serial_deregister_drivers() to not need a pointer to a struct
usb_driver anymore.  The usb_driver structure is now created dynamically
and registered and unregistered as needed.

This saves lines of code in each usb-serial driver.  All in-kernel users
of these functions were also fixed up at this time.  The pl2303 driver
was tested that everything worked properly.

Thanks for the idea to do this from Alan Stern.

Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Al Borchers <alborchers@steinerpoint.com>
Cc: Aleksey Babahin <tamerlan311@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrew Worsley <amworsley@gmail.com>
Cc: Bart Hartgers <bart.hartgers@gmail.com>
Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Donald Lee <donald@asix.com.tw>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Gary Brubaker <xavyer@ix.netcom.com>
Cc: Jesper Juhl <jj@chaosbits.net>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: Kautuk Consul <consul.kautuk@gmail.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Lonnie Mendez <dignome@gmail.com>
Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com>
Cc: Matthias Urlichs <smurf@smurf.noris.de>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Michal Sroczynski <msroczyn@gmail.com>
Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl>
Cc: Oliver Neukum <oliver@neukum.name>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Berger <pberger@brimson.com>
Cc: Preston Fick <preston.fick@silabs.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Rigbert Hamisch <rigbert@gmx.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Support Department <support@connecttech.com>
Cc: Thomas Tuttle <ttuttle@chromium.org>
Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Cc: Wang YanQing <Udknight@gmail.com>
Cc: William Greathouse <wgreathouse@smva.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-08 15:46:14 -07:00

283 lines
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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 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("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);
/* 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(serial_drivers, id_table);
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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