drivers/usb/serial/usb-wwan.h

   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 */