/*
 * 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/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");
nd/oss/dmasound/dmasound.h?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>commit</a><a class='active' href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound/dmasound.h?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/oss/dmasound/dmasound.h'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='6e978b22efa1db9f6e71b24440b5f1d93e968ee3'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>oss</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>dmasound</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound/dmasound.h?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>dmasound.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='6e978b22efa1db9f6e71b24440b5f1d93e968ee3'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>Diffstat</a> (limited to 'sound/oss/dmasound/dmasound.h')</div><table summary='diffstat' class='diffstat'>