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 #include <linux/types.h>
  20
  21 struct hidraw_report_descriptor {
  22         __u32 size;
  23         __u8 value[HID_MAX_DESCRIPTOR_SIZE];
  24 };
  25
  26 struct hidraw_devinfo {
  27         __u32 bustype;
  28         __s16 vendor;
  29         __s16 product;
  30 };
  31
  32 /* ioctl interface */
  33 #define HIDIOCGRDESCSIZE        _IOR('H', 0x01, int)
  34 #define HIDIOCGRDESC            _IOR('H', 0x02, struct hidraw_report_descriptor)
  35 #define HIDIOCGRAWINFO          _IOR('H', 0x03, struct hidraw_devinfo)
  36 #define HIDIOCGRAWNAME(len)     _IOC(_IOC_READ, 'H', 0x04, len)
  37 #define HIDIOCGRAWPHYS(len)     _IOC(_IOC_READ, 'H', 0x05, len)
  38 /* The first byte of SFEATURE and GFEATURE is the report number */
  39 #define HIDIOCSFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
  40 #define HIDIOCGFEATURE(len)    _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
  41
  42 #define HIDRAW_FIRST_MINOR 0
  43 #define HIDRAW_MAX_DEVICES 64
  44 /* number of reports to buffer */
  45 #define HIDRAW_BUFFER_SIZE 64
  46
  47
  48 /* kernel-only API declarations */
  49 #ifdef __KERNEL__
  50
  51 struct hidraw {
  52         unsigned int minor;
  53         int exist;
  54         int open;
  55         wait_queue_head_t wait;
  56         struct hid_device *hid;
  57         struct device *dev;
  58         struct list_head list;
  59 };
  60
  61 struct hidraw_report {
  62         __u8 *value;
  63         int len;
  64 };
  65
  66 struct hidraw_list {
  67         struct hidraw_report buffer[HIDRAW_BUFFER_SIZE];
  68         int head;
  69         int tail;
  70         struct fasync_struct *fasync;
  71         struct hidraw *hidraw;
  72         struct list_head node;
  73         struct mutex read_mutex;
  74 };
  75
  76 #ifdef CONFIG_HIDRAW
  77 int hidraw_init(void);
  78 void hidraw_exit(void);
  79 int hidraw_report_event(struct hid_device *, u8 *, int);
  80 int hidraw_connect(struct hid_device *);
  81 void hidraw_disconnect(struct hid_device *);
  82 #else
  83 static inline int hidraw_init(void) { return 0; }
  84 static inline void hidraw_exit(void) { }
  85 static inline int hidraw_report_event(struct hid_device *hid, u8 *data, int len) { return 0; }
  86 static inline int hidraw_connect(struct hid_device *hid) { return -1; }
  87 static inline void hidraw_disconnect(struct hid_device *hid) { }
  88 #endif
  89
  90 #endif
  91
  92 #endif