15761826ee
This patch converts the acm_ms gadget to make use of the function framework to request the ACM function. The "old" include interface for acm is now removed since nokia was the last user of it (for ACM). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
72 lines
2.2 KiB
C
72 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 <linux/usb/composite.h>
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#include <linux/usb/cdc.h>
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#define MAX_U_SERIAL_PORTS 4
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struct f_serial_opts {
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struct usb_function_instance func_inst;
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u8 port_num;
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};
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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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/* 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, gfp_t flags);
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void gs_free_req(struct usb_ep *, struct usb_request *req);
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/* management of individual TTY ports */
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int gserial_alloc_line(unsigned char *port_line);
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void gserial_free_line(unsigned char port_line);
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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 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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