/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Definitions for USB serial mobile broadband cards
 */

#ifndef __LINUX_USB_USB_WWAN
#define __LINUX_USB_USB_WWAN

extern void usb_wwan_dtr_rts(struct usb_serial_port *port, int on);
extern int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port);
extern void usb_wwan_close(struct usb_serial_port *port);
extern int usb_wwan_port_probe(struct usb_serial_port *port);
extern void usb_wwan_port_remove(struct usb_serial_port *port);
extern unsigned int usb_wwan_write_room(struct tty_struct *tty);
extern int usb_wwan_tiocmget(struct tty_struct *tty);
extern int usb_wwan_tiocmset(struct tty_struct *tty,
                             unsigned int set, unsigned int clear);
extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
                          const unsigned char *buf, int count);
extern unsigned int usb_wwan_chars_in_buffer(struct tty_struct *tty);
#ifdef CONFIG_PM
extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message);
extern int usb_wwan_resume(struct usb_serial *serial);
#endif

/* per port private data */

#define N_IN_URB 4
#define N_OUT_URB 4
#define IN_BUFLEN 4096
#define OUT_BUFLEN 4096

struct usb_wwan_intf_private {
        spinlock_t susp_lock;
        unsigned int suspended:1;
        unsigned int use_send_setup:1;
        unsigned int use_zlp:1;
        int in_flight;
        unsigned int open_ports;
        void *private;
};

struct usb_wwan_port_private {
        /* Input endpoints and buffer for this port */
        struct urb *in_urbs[N_IN_URB];
        u8 *in_buffer[N_IN_URB];
        /* Output endpoints and buffer for this port */
        struct urb *out_urbs[N_OUT_URB];
        u8 *out_buffer[N_OUT_URB];
        unsigned long out_busy; /* Bit vector of URBs in use */
        struct usb_anchor delayed;

        /* Settings for the port */
        int rts_state;          /* Handshaking pins (outputs) */
        int dtr_state;
        int cts_state;          /* Handshaking pins (inputs) */
        int dsr_state;
        int dcd_state;
        int ri_state;

        unsigned long tx_start_time[N_OUT_URB];
};

#endif /* __LINUX_USB_USB_WWAN */