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 #define GZERO_SS_BULK_QLEN      1
  14 #define GZERO_SS_ISO_QLEN       8
  15
  16 struct usb_zero_options {
  17         unsigned pattern;
  18         unsigned isoc_interval;
  19         unsigned isoc_maxpacket;
  20         unsigned isoc_mult;
  21         unsigned isoc_maxburst;
  22         unsigned bulk_buflen;
  23         unsigned qlen;
  24         unsigned ss_bulk_qlen;
  25         unsigned ss_iso_qlen;
  26 };
  27
  28 struct f_ss_opts {
  29         struct usb_function_instance func_inst;
  30         unsigned pattern;
  31         unsigned isoc_interval;
  32         unsigned isoc_maxpacket;
  33         unsigned isoc_mult;
  34         unsigned isoc_maxburst;
  35         unsigned bulk_buflen;
  36         unsigned bulk_qlen;
  37         unsigned iso_qlen;
  38
  39         /*
  40          * Read/write access to configfs attributes is handled by configfs.
  41          *
  42          * This is to protect the data from concurrent access by read/write
  43          * and create symlink/remove symlink.
  44          */
  45         struct mutex                    lock;
  46         int                             refcnt;
  47 };
  48
  49 struct f_lb_opts {
  50         struct usb_function_instance func_inst;
  51         unsigned bulk_buflen;
  52         unsigned qlen;
  53
  54         /*
  55          * Read/write access to configfs attributes is handled by configfs.
  56          *
  57          * This is to protect the data from concurrent access by read/write
  58          * and create symlink/remove symlink.
  59          */
  60         struct mutex                    lock;
  61         int                             refcnt;
  62 };
  63
  64 void lb_modexit(void);
  65 int lb_modinit(void);
  66
  67 /* common utilities */
  68 void disable_endpoints(struct usb_composite_dev *cdev,
  69                 struct usb_ep *in, struct usb_ep *out,
  70                 struct usb_ep *iso_in, struct usb_ep *iso_out);
  71
  72 #endif /* __G_ZERO_H */