59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
|
|
* 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>
|
|
|
|
/*
|
|
* 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 need TTY --> USB event flow too, so ACM can report open/close
|
|
* as carrier detect events. Model after ECM. There's more ACM state too.
|
|
*
|
|
* 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;
|
|
struct usb_endpoint_descriptor *in_desc;
|
|
struct usb_endpoint_descriptor *out_desc;
|
|
|
|
/* REVISIT avoid this CDC-ACM support harder ... */
|
|
struct usb_cdc_line_coding port_line_coding; /* 9600-8-N-1 etc */
|
|
};
|
|
|
|
/* port setup/teardown is handled by gadget driver */
|
|
int gserial_setup(struct usb_gadget *g, unsigned n_ports);
|
|
void gserial_cleanup(void);
|
|
|
|
/* 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 acm_bind_config(struct usb_configuration *c, u8 port_num);
|
|
int gser_bind_config(struct usb_configuration *c, u8 port_num);
|
|
|
|
#endif /* __U_SERIAL_H */
|