include/linux/hidraw.h

   1 #ifndef _HIDRAW_H
   2 #define _HIDRAW_H
   3
   4 /*
   5  *  Copyright (c) 2007 Jiri Kosina
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms and conditions of the GNU General Public License,
  11  * version 2, as published by the Free Software Foundation.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #include <linux/hid.h>
  19
  20 struct hidraw_report_descriptor {
  21         __u32 size;
  22         __u8 value[HID_MAX_DESCRIPTOR_SIZE];
  23 };
  24
  25 struct hidraw_devinfo {
  26         __u32 bustype;
  27         __s16 vendor;
  28         __s16 product;
  29 };
  30
  31 /* ioctl interface */
  32 #define HIDIOCGRDESCSIZE        _IOR('H', 0x01, int)
  33 #define HIDIOCGRDESC            _IOR('H', 0x02, struct hidraw_report_descriptor)
  34 #define HIDIOCGRAWINFO          _IOR('H', 0x03, struct hidraw_devinfo)
  35
  36 #define HIDRAW_FIRST_MINOR 0
  37 #define HIDRAW_MAX_DEVICES 64
  38 /* number of reports to buffer */
  39 #define HIDRAW_BUFFER_SIZE 64
  40
  41
  42 /* kernel-only API declarations */
  43 #ifdef __KERNEL__
  44
  45 struct hidraw {
  46         unsigned int minor;
  47         int exist;
  48         int open;
  49         wait_queue_head_t wait;
  50         struct hid_device *hid;
  51         struct device *dev;
  52         struct list_head list;
  53 };
  54
  55 struct hidraw_report {
  56         __u8 *value;
  57         int len;
  58 };
  59
  60 struct hidraw_list {
  61         struct hidraw_report buffer[HIDRAW_BUFFER_SIZE];
  62         int head;
  63         int tail;
  64         struct fasync_struct *fasync;
  65         struct hidraw *hidraw;
  66         struct list_head node;
  67         struct mutex read_mutex;
  68 };
  69
  70 #ifdef CONFIG_HIDRAW
  71 int hidraw_init(void);
  72 void hidraw_exit(void);
  73 void hidraw_report_event(struct hid_device *, u8 *, int);
  74 int hidraw_connect(struct hid_device *);
  75 void hidraw_disconnect(struct hid_device *);
  76 #else
  77 static inline int hidraw_init(void) { return 0; }
  78 static inline void hidraw_exit(void) { }
  79 static inline void hidraw_report_event(struct hid_device *hid, u8 *data, int len) { }
  80 static inline int hidraw_connect(struct hid_device *hid) { return -1; }
  81 static inline void hidraw_disconnect(struct hid_device *hid) { }
  82 #endif
  83
  84 #endif
  85
  86 #endif