68e2411345
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>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
|
|
* USB Debug cable driver
|
|
*
|
|
* Copyright (C) 2006 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 version
|
|
* 2 as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/gfp.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/module.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/serial.h>
|
|
|
|
#define USB_DEBUG_MAX_PACKET_SIZE 8
|
|
#define USB_DEBUG_BRK_SIZE 8
|
|
static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = {
|
|
0x00,
|
|
0xff,
|
|
0x01,
|
|
0xfe,
|
|
0x00,
|
|
0xfe,
|
|
0x01,
|
|
0xff,
|
|
};
|
|
|
|
static const struct usb_device_id id_table[] = {
|
|
{ USB_DEVICE(0x0525, 0x127a) },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, id_table);
|
|
|
|
/* This HW really does not support a serial break, so one will be
|
|
* emulated when ever the break state is set to true.
|
|
*/
|
|
static void usb_debug_break_ctl(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
if (!break_state)
|
|
return;
|
|
usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE);
|
|
}
|
|
|
|
static void usb_debug_process_read_urb(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *port = urb->context;
|
|
|
|
if (urb->actual_length == USB_DEBUG_BRK_SIZE &&
|
|
memcmp(urb->transfer_buffer, USB_DEBUG_BRK,
|
|
USB_DEBUG_BRK_SIZE) == 0) {
|
|
usb_serial_handle_break(port);
|
|
return;
|
|
}
|
|
|
|
usb_serial_generic_process_read_urb(urb);
|
|
}
|
|
|
|
static struct usb_serial_driver debug_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "debug",
|
|
},
|
|
.id_table = id_table,
|
|
.num_ports = 1,
|
|
.bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE,
|
|
.break_ctl = usb_debug_break_ctl,
|
|
.process_read_urb = usb_debug_process_read_urb,
|
|
};
|
|
|
|
static struct usb_serial_driver * const serial_drivers[] = {
|
|
&debug_device, NULL
|
|
};
|
|
|
|
module_usb_serial_driver(serial_drivers, id_table);
|
|
MODULE_LICENSE("GPL");
|