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 int usb_wwan_port_remove(struct usb_serial_port *port); 14 extern 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_ioctl(struct tty_struct *tty, 19 unsigned int cmd, unsigned long arg); 20 extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port, 21 const unsigned char *buf, int count); 22 extern int usb_wwan_chars_in_buffer(struct tty_struct *tty); 23 #ifdef CONFIG_PM 24 extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message); 25 extern int usb_wwan_resume(struct usb_serial *serial); 26 #endif 27 28 /* per port private data */ 29 30 #define N_IN_URB 4 31 #define N_OUT_URB 4 32 #define IN_BUFLEN 4096 33 #define OUT_BUFLEN 4096 34 35 struct usb_wwan_intf_private { 36 spinlock_t susp_lock; 37 unsigned int suspended:1; 38 unsigned int use_send_setup:1; 39 unsigned int use_zlp:1; 40 int in_flight; 41 unsigned int open_ports; 42 void *private; 43 }; 44 45 struct usb_wwan_port_private { 46 /* Input endpoints and buffer for this port */ 47 struct urb *in_urbs[N_IN_URB]; 48 u8 *in_buffer[N_IN_URB]; 49 /* Output endpoints and buffer for this port */ 50 struct urb *out_urbs[N_OUT_URB]; 51 u8 *out_buffer[N_OUT_URB]; 52 unsigned long out_busy; /* Bit vector of URBs in use */ 53 struct usb_anchor delayed; 54 55 /* Settings for the port */ 56 int rts_state; /* Handshaking pins (outputs) */ 57 int dtr_state; 58 int cts_state; /* Handshaking pins (inputs) */ 59 int dsr_state; 60 int dcd_state; 61 int ri_state; 62 63 unsigned long tx_start_time[N_OUT_URB]; 64 }; 65 66 #endif /* __LINUX_USB_USB_WWAN */ 67