d9345607aa
This patch adds support for USB devices. It uses the Linux Kernel gadget API. Along with this patch comes driver support for the Freescale (arc) USB OTG Core and USB Device Firmware Update (DFU) The serial gadget support is not working at the moment. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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* u_serial.h - interface to USB gadget "serial port"/TTY utilities
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*
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* Copyright (C) 2008 David Brownell
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* Copyright (C) 2008 by Nokia Corporation
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*
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* This software is distributed under the terms of the GNU General
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* Public License ("GPL") as published by the Free Software Foundation,
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* either version 2 of that License or (at your option) any later version.
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*/
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#ifndef __U_SERIAL_H
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#define __U_SERIAL_H
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#include <usb/composite.h>
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#include <usb/cdc.h>
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/*
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* One non-multiplexed "serial" I/O port ... there can be several of these
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* on any given USB peripheral device, if it provides enough endpoints.
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*
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* The "u_serial" utility component exists to do one thing: manage TTY
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* style I/O using the USB peripheral endpoints listed here, including
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* hookups to sysfs and /dev for each logical "tty" device.
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*
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* REVISIT at least ACM could support tiocmget() if needed.
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*
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* REVISIT someday, allow multiplexing several TTYs over these endpoints.
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*/
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struct gserial {
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struct usb_function func;
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/* port is managed by gserial_{connect,disconnect} */
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struct gs_port *ioport;
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struct usb_ep *in;
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struct usb_ep *out;
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struct usb_endpoint_descriptor *in_desc;
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struct usb_endpoint_descriptor *out_desc;
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/* REVISIT avoid this CDC-ACM support harder ... */
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struct usb_cdc_line_coding port_line_coding; /* 9600-8-N-1 etc */
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/* notification callbacks */
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void (*connect)(struct gserial *p);
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void (*disconnect)(struct gserial *p);
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int (*send_break)(struct gserial *p, int duration);
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};
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/* utilities to allocate/free request and buffer */
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struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len);
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void gs_free_req(struct usb_ep *, struct usb_request *req);
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/* port setup/teardown is handled by gadget driver */
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int gserial_setup(struct usb_gadget *g, unsigned n_ports);
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void gserial_cleanup(void);
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/* connect/disconnect is handled by individual functions */
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int gserial_connect(struct gserial *, u8 port_num);
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void gserial_disconnect(struct gserial *);
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/* functions are bound to configurations by a config or gadget driver */
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int acm_bind_config(struct usb_configuration *c, u8 port_num);
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int gser_bind_config(struct usb_configuration *c, u8 port_num);
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int obex_bind_config(struct usb_configuration *c, u8 port_num);
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#endif /* __U_SERIAL_H */
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