/*
 * u_serial.h - interface to USB gadget "serial port"/TTY utilities
 *
 * Copyright (C) 2008 David Brownell
 * Copyright (C) 2008 by Nokia Corporation
 *
 * This software is distributed under the terms of the GNU General
 * Public License ("GPL") as published by the Free Software Foundation,
 * either version 2 of that License or (at your option) any later version.
 */

#ifndef __U_SERIAL_H
#define __U_SERIAL_H

#include <linux/usb/composite.h>
#include <linux/usb/cdc.h>

#define MAX_U_SERIAL_PORTS	4

struct f_serial_opts {
	struct usb_function_instance func_inst;
	u8 port_num;
};

/*
 * One non-multiplexed "serial" I/O port ... there can be several of these
 * on any given USB peripheral device, if it provides enough endpoints.
 *
 * The "u_serial" utility component exists to do one thing:  manage TTY
 * style I/O using the USB peripheral endpoints listed here, including
 * hookups to sysfs and /dev for each logical "tty" device.
 *
 * REVISIT at least ACM could support tiocmget() if needed.
 *
 * REVISIT someday, allow multiplexing several TTYs over these endpoints.
 */
struct gserial {
	struct usb_function		func;

	/* port is managed by gserial_{connect,disconnect} */
	struct gs_port			*ioport;

	struct usb_ep			*in;
	struct usb_ep			*out;

	/* REVISIT avoid this CDC-ACM support harder ... */
	struct usb_cdc_line_coding port_line_coding;	/* 9600-8-N-1 etc */

	/* notification callbacks */
	void (*connect)(struct gserial *p);
	void (*disconnect)(struct gserial *p);
	int (*send_break)(struct gserial *p, int duration);
};

/* utilities to allocate/free request and buffer */
struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t flags);
void gs_free_req(struct usb_ep *, struct usb_request *req);

/* management of individual TTY ports */
int gserial_alloc_line(unsigned char *port_line);
void gserial_free_line(unsigned char port_line);

/* connect/disconnect is handled by individual functions */
int gserial_connect(struct gserial *, u8 port_num);
void gserial_disconnect(struct gserial *);

/* functions are bound to configurations by a config or gadget driver */
int gser_bind_config(struct usb_configuration *c, u8 port_num);
int obex_bind_config(struct usb_configuration *c, u8 port_num);

#endif /* __U_SERIAL_H */
='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/log/?id=0ca2b46dbb645c1aa23eda6f5ac49a7be31ac87d'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=0ca2b46dbb645c1aa23eda6f5ac49a7be31ac87d'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/wireless?id=0ca2b46dbb645c1aa23eda6f5ac49a7be31ac87d'>wireless</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/wireless/Kconfig?id=0ca2b46dbb645c1aa23eda6f5ac49a7be31ac87d'>Kconfig</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/wireless/Kconfig?id=0ca2b46dbb645c1aa23eda6f5ac49a7be31ac87d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>