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_INT_INTERVAL      1 /* Default interrupt interval = 1 ms */
  14 #define GZERO_INT_MAXPACKET     1024
  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 int_interval; /* In ms */
  23         unsigned int_maxpacket;
  24         unsigned int_mult;
  25         unsigned int_maxburst;
  26         unsigned bulk_buflen;
  27         unsigned qlen;
  28 };
  29
  30 struct f_ss_opts {
  31         struct usb_function_instance func_inst;
  32         unsigned pattern;
  33         unsigned isoc_interval;
  34         unsigned isoc_maxpacket;
  35         unsigned isoc_mult;
  36         unsigned isoc_maxburst;
  37         unsigned int_interval; /* In ms */
  38         unsigned int_maxpacket;
  39         unsigned int_mult;
  40         unsigned int_maxburst;
  41         unsigned bulk_buflen;
  42
  43         /*
  44          * Read/write access to configfs attributes is handled by configfs.
  45          *
  46          * This is to protect the data from concurrent access by read/write
  47          * and create symlink/remove symlink.
  48          */
  49         struct mutex                    lock;
  50         int                             refcnt;
  51 };
  52
  53 struct f_lb_opts {
  54         struct usb_function_instance func_inst;
  55         unsigned bulk_buflen;
  56         unsigned qlen;
  57
  58         /*
  59          * Read/write access to configfs attributes is handled by configfs.
  60          *
  61          * This is to protect the data from concurrent access by read/write
  62          * and create symlink/remove symlink.
  63          */
  64         struct mutex                    lock;
  65         int                             refcnt;
  66 };
  67
  68 void lb_modexit(void);
  69 int lb_modinit(void);
  70
  71 /* common utilities */
  72 void free_ep_req(struct usb_ep *ep, struct usb_request *req);
  73 void disable_endpoints(struct usb_composite_dev *cdev,
  74                 struct usb_ep *in, struct usb_ep *out,
  75                 struct usb_ep *iso_in, struct usb_ep *iso_out,
  76                 struct usb_ep *int_in, struct usb_ep *int_out);
  77
  78 #endif /* __G_ZERO_H */