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linux-next/include/linux/hidraw.h
Alan Ott b4dbde9da8 HID: Add Support for Setting and Getting Feature Reports from hidraw
Per the HID Specification, Feature reports must be sent and received on
the Configuration endpoint (EP 0) through the Set_Report/Get_Report
interfaces.  This patch adds two ioctls to hidraw to set and get feature
reports to and from the device.  Modifications were made to hidraw and
usbhid.

New hidraw ioctls:
  HIDIOCSFEATURE - Perform a Set_Report transfer of a Feature report.
  HIDIOCGFEATURE - Perform a Get_Report transfer of a Feature report.

Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-11 15:05:49 +01:00

93 lines
2.4 KiB
C

#ifndef _HIDRAW_H
#define _HIDRAW_H
/*
* Copyright (c) 2007 Jiri Kosina
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <linux/hid.h>
#include <linux/types.h>
struct hidraw_report_descriptor {
__u32 size;
__u8 value[HID_MAX_DESCRIPTOR_SIZE];
};
struct hidraw_devinfo {
__u32 bustype;
__s16 vendor;
__s16 product;
};
/* ioctl interface */
#define HIDIOCGRDESCSIZE _IOR('H', 0x01, int)
#define HIDIOCGRDESC _IOR('H', 0x02, struct hidraw_report_descriptor)
#define HIDIOCGRAWINFO _IOR('H', 0x03, struct hidraw_devinfo)
#define HIDIOCGRAWNAME(len) _IOC(_IOC_READ, 'H', 0x04, len)
#define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len)
/* The first byte of SFEATURE and GFEATURE is the report number */
#define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
#define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
#define HIDRAW_FIRST_MINOR 0
#define HIDRAW_MAX_DEVICES 64
/* number of reports to buffer */
#define HIDRAW_BUFFER_SIZE 64
/* kernel-only API declarations */
#ifdef __KERNEL__
struct hidraw {
unsigned int minor;
int exist;
int open;
wait_queue_head_t wait;
struct hid_device *hid;
struct device *dev;
struct list_head list;
};
struct hidraw_report {
__u8 *value;
int len;
};
struct hidraw_list {
struct hidraw_report buffer[HIDRAW_BUFFER_SIZE];
int head;
int tail;
struct fasync_struct *fasync;
struct hidraw *hidraw;
struct list_head node;
struct mutex read_mutex;
};
#ifdef CONFIG_HIDRAW
int hidraw_init(void);
void hidraw_exit(void);
void hidraw_report_event(struct hid_device *, u8 *, int);
int hidraw_connect(struct hid_device *);
void hidraw_disconnect(struct hid_device *);
#else
static inline int hidraw_init(void) { return 0; }
static inline void hidraw_exit(void) { }
static inline void hidraw_report_event(struct hid_device *hid, u8 *data, int len) { }
static inline int hidraw_connect(struct hid_device *hid) { return -1; }
static inline void hidraw_disconnect(struct hid_device *hid) { }
#endif
#endif
#endif