linux/drivers/usb/serial/empeg.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

140 lines
3.8 KiB
C

/*
* USB Empeg empeg-car player driver
*
* Copyright (C) 2000, 2001
* Gary Brubaker (xavyer@ix.netcom.com)
*
* Copyright (C) 1999 - 2001
* Greg Kroah-Hartman (greg@kroah.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, as published by
* the Free Software Foundation, version 2.
*
* See Documentation/usb/usb-serial.txt for more information on using this
* driver
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
static bool debug;
/*
* Version Information
*/
#define DRIVER_VERSION "v1.3"
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
#define DRIVER_DESC "USB Empeg Mark I/II Driver"
#define EMPEG_VENDOR_ID 0x084f
#define EMPEG_PRODUCT_ID 0x0001
/* function prototypes for an empeg-car player */
static int empeg_startup(struct usb_serial *serial);
static void empeg_init_termios(struct tty_struct *tty);
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_serial_driver empeg_device = {
.driver = {
.owner = THIS_MODULE,
.name = "empeg",
},
.id_table = id_table,
.num_ports = 1,
.bulk_out_size = 256,
.throttle = usb_serial_generic_throttle,
.unthrottle = usb_serial_generic_unthrottle,
.attach = empeg_startup,
.init_termios = empeg_init_termios,
};
static struct usb_serial_driver * const serial_drivers[] = {
&empeg_device, NULL
};
static int empeg_startup(struct usb_serial *serial)
{
int r;
if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
serial->dev->actconfig->desc.bConfigurationValue);
return -ENODEV;
}
r = usb_reset_configuration(serial->dev);
/* continue on with initialization */
return r;
}
static void empeg_init_termios(struct tty_struct *tty)
{
struct ktermios *termios = tty->termios;
/*
* The empeg-car player wants these particular tty settings.
* You could, for example, change the baud rate, however the
* player only supports 115200 (currently), so there is really
* no point in support for changes to the tty settings.
* (at least for now)
*
* The default requirements for this device are:
*/
termios->c_iflag
&= ~(IGNBRK /* disable ignore break */
| BRKINT /* disable break causes interrupt */
| PARMRK /* disable mark parity errors */
| ISTRIP /* disable clear high bit of input characters */
| INLCR /* disable translate NL to CR */
| IGNCR /* disable ignore CR */
| ICRNL /* disable translate CR to NL */
| IXON); /* disable enable XON/XOFF flow control */
termios->c_oflag
&= ~OPOST; /* disable postprocess output characters */
termios->c_lflag
&= ~(ECHO /* disable echo input characters */
| ECHONL /* disable echo new line */
| ICANON /* disable erase, kill, werase, and rprnt special characters */
| ISIG /* disable interrupt, quit, and suspend special characters */
| IEXTEN); /* disable non-POSIX special characters */
termios->c_cflag
&= ~(CSIZE /* no size */
| PARENB /* disable parity bit */
| CBAUD); /* clear current baud rate */
termios->c_cflag
|= CS8; /* character size 8 bits */
tty_encode_baud_rate(tty, 115200, 115200);
}
module_usb_serial_driver(serial_drivers, id_table);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");