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