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 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 */