usb/serial/usb-wwan.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Definitions for USB serial mobile broadband cards
0004  */
0005
0006 #ifndef __LINUX_USB_USB_WWAN
0007 #define __LINUX_USB_USB_WWAN
0008
0009 extern void usb_wwan_dtr_rts(struct usb_serial_port *port, int on);
0010 extern int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port);
0011 extern void usb_wwan_close(struct usb_serial_port *port);
0012 extern int usb_wwan_port_probe(struct usb_serial_port *port);
0013 extern void usb_wwan_port_remove(struct usb_serial_port *port);
0014 extern unsigned int usb_wwan_write_room(struct tty_struct *tty);
0015 extern int usb_wwan_tiocmget(struct tty_struct *tty);
0016 extern int usb_wwan_tiocmset(struct tty_struct *tty,
0017                  unsigned int set, unsigned int clear);
0018 extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
0019               const unsigned char *buf, int count);
0020 extern unsigned int usb_wwan_chars_in_buffer(struct tty_struct *tty);
0021 #ifdef CONFIG_PM
0022 extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message);
0023 extern int usb_wwan_resume(struct usb_serial *serial);
0024 #endif
0025
0026 /* per port private data */
0027
0028 #define N_IN_URB 4
0029 #define N_OUT_URB 4
0030 #define IN_BUFLEN 4096
0031 #define OUT_BUFLEN 4096
0032
0033 struct usb_wwan_intf_private {
0034     spinlock_t susp_lock;
0035     unsigned int suspended:1;
0036     unsigned int use_send_setup:1;
0037     unsigned int use_zlp:1;
0038     int in_flight;
0039     unsigned int open_ports;
0040     void *private;
0041 };
0042
0043 struct usb_wwan_port_private {
0044     /* Input endpoints and buffer for this port */
0045     struct urb *in_urbs[N_IN_URB];
0046     u8 *in_buffer[N_IN_URB];
0047     /* Output endpoints and buffer for this port */
0048     struct urb *out_urbs[N_OUT_URB];
0049     u8 *out_buffer[N_OUT_URB];
0050     unsigned long out_busy; /* Bit vector of URBs in use */
0051     struct usb_anchor delayed;
0052
0053     /* Settings for the port */
0054     int rts_state;      /* Handshaking pins (outputs) */
0055     int dtr_state;
0056     int cts_state;      /* Handshaking pins (inputs) */
0057     int dsr_state;
0058     int dcd_state;
0059     int ri_state;
0060
0061     unsigned long tx_start_time[N_OUT_URB];
0062 };
0063
0064 #endif /* __LINUX_USB_USB_WWAN */