1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Definitions for USB serial mobile broadband cards
4 */
5
6#ifndef __LINUX_USB_USB_WWAN
7#define __LINUX_USB_USB_WWAN
8
9extern void usb_wwan_dtr_rts(struct usb_serial_port *port, int on);
10extern int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port);
11extern void usb_wwan_close(struct usb_serial_port *port);
12extern int usb_wwan_port_probe(struct usb_serial_port *port);
13extern int usb_wwan_port_remove(struct usb_serial_port *port);
14extern int usb_wwan_write_room(struct tty_struct *tty);
15extern int usb_wwan_tiocmget(struct tty_struct *tty);
16extern int usb_wwan_tiocmset(struct tty_struct *tty,
17			     unsigned int set, unsigned int clear);
18extern int usb_wwan_get_serial_info(struct tty_struct *tty,
19			   struct serial_struct *ss);
20extern int usb_wwan_set_serial_info(struct tty_struct *tty,
21			   struct serial_struct *ss);
22extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
23			  const unsigned char *buf, int count);
24extern int usb_wwan_chars_in_buffer(struct tty_struct *tty);
25#ifdef CONFIG_PM
26extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message);
27extern int usb_wwan_resume(struct usb_serial *serial);
28#endif
29
30/* per port private data */
31
32#define N_IN_URB 4
33#define N_OUT_URB 4
34#define IN_BUFLEN 4096
35#define OUT_BUFLEN 4096
36
37struct usb_wwan_intf_private {
38	spinlock_t susp_lock;
39	unsigned int suspended:1;
40	unsigned int use_send_setup:1;
41	unsigned int use_zlp:1;
42	int in_flight;
43	unsigned int open_ports;
44	void *private;
45};
46
47struct usb_wwan_port_private {
48	/* Input endpoints and buffer for this port */
49	struct urb *in_urbs[N_IN_URB];
50	u8 *in_buffer[N_IN_URB];
51	/* Output endpoints and buffer for this port */
52	struct urb *out_urbs[N_OUT_URB];
53	u8 *out_buffer[N_OUT_URB];
54	unsigned long out_busy;	/* Bit vector of URBs in use */
55	struct usb_anchor delayed;
56
57	/* Settings for the port */
58	int rts_state;		/* Handshaking pins (outputs) */
59	int dtr_state;
60	int cts_state;		/* Handshaking pins (inputs) */
61	int dsr_state;
62	int dcd_state;
63	int ri_state;
64
65	unsigned long tx_start_time[N_OUT_URB];
66};
67
68#endif /* __LINUX_USB_USB_WWAN */
69