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