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