drivers/usb/gadget/function/g_zero.h

   1 /*
   2  * This header declares the utility functions used by "Gadget Zero", plus
   3  * interfaces to its two single-configuration function drivers.
   4  */
   5
   6 #ifndef __G_ZERO_H
   7 #define __G_ZERO_H
   8
   9 #define GZERO_BULK_BUFLEN       4096
  10 #define GZERO_QLEN              32
  11 #define GZERO_ISOC_INTERVAL     4
  12 #define GZERO_ISOC_MAXPACKET    1024
  13
  14 struct usb_zero_options {
  15         unsigned pattern;
  16         unsigned isoc_interval;
  17         unsigned isoc_maxpacket;
  18         unsigned isoc_mult;
  19         unsigned isoc_maxburst;
  20         unsigned bulk_buflen;
  21         unsigned qlen;
  22 };
  23
  24 struct f_ss_opts {
  25         struct usb_function_instance func_inst;
  26         unsigned pattern;
  27         unsigned isoc_interval;
  28         unsigned isoc_maxpacket;
  29         unsigned isoc_mult;
  30         unsigned isoc_maxburst;
  31         unsigned bulk_buflen;
  32
  33         /*
  34          * Read/write access to configfs attributes is handled by configfs.
  35          *
  36          * This is to protect the data from concurrent access by read/write
  37          * and create symlink/remove symlink.
  38          */
  39         struct mutex                    lock;
  40         int                             refcnt;
  41 };
  42
  43 struct f_lb_opts {
  44         struct usb_function_instance func_inst;
  45         unsigned bulk_buflen;
  46         unsigned qlen;
  47
  48         /*
  49          * Read/write access to configfs attributes is handled by configfs.
  50          *
  51          * This is to protect the data from concurrent access by read/write
  52          * and create symlink/remove symlink.
  53          */
  54         struct mutex                    lock;
  55         int                             refcnt;
  56 };
  57
  58 void lb_modexit(void);
  59 int lb_modinit(void);
  60
  61 /* common utilities */
  62 void free_ep_req(struct usb_ep *ep, struct usb_request *req);
  63 void disable_endpoints(struct usb_composite_dev *cdev,
  64                 struct usb_ep *in, struct usb_ep *out,
  65                 struct usb_ep *iso_in, struct usb_ep *iso_out);
  66
  67 #endif /* __G_ZERO_H */