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dded364bf4
Fix hiddev.h example code. To get the correct usage code, you need to set report_type and report_id. Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
243 lines
7.1 KiB
C
243 lines
7.1 KiB
C
#ifndef _HIDDEV_H
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#define _HIDDEV_H
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/*
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* Copyright (c) 1999-2000 Vojtech Pavlik
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*
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* Sponsored by SuSE
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
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* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
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*/
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/*
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* The event structure itself
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*/
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struct hiddev_event {
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unsigned hid;
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signed int value;
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};
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struct hiddev_devinfo {
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__u32 bustype;
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__u32 busnum;
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__u32 devnum;
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__u32 ifnum;
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__s16 vendor;
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__s16 product;
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__s16 version;
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__u32 num_applications;
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};
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struct hiddev_collection_info {
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__u32 index;
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__u32 type;
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__u32 usage;
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__u32 level;
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};
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#define HID_STRING_SIZE 256
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struct hiddev_string_descriptor {
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__s32 index;
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char value[HID_STRING_SIZE];
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};
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struct hiddev_report_info {
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__u32 report_type;
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__u32 report_id;
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__u32 num_fields;
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};
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/* To do a GUSAGE/SUSAGE, fill in at least usage_code, report_type and
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* report_id. Set report_id to REPORT_ID_UNKNOWN if the rest of the fields
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* are unknown. Otherwise use a usage_ref struct filled in from a previous
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* successful GUSAGE call to save time. To actually send a value to the
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* device, perform a SUSAGE first, followed by a SREPORT. An INITREPORT or a
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* GREPORT isn't necessary for a GUSAGE to return valid data.
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*/
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#define HID_REPORT_ID_UNKNOWN 0xffffffff
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#define HID_REPORT_ID_FIRST 0x00000100
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#define HID_REPORT_ID_NEXT 0x00000200
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#define HID_REPORT_ID_MASK 0x000000ff
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#define HID_REPORT_ID_MAX 0x000000ff
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#define HID_REPORT_TYPE_INPUT 1
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#define HID_REPORT_TYPE_OUTPUT 2
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#define HID_REPORT_TYPE_FEATURE 3
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#define HID_REPORT_TYPE_MIN 1
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#define HID_REPORT_TYPE_MAX 3
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struct hiddev_field_info {
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__u32 report_type;
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__u32 report_id;
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__u32 field_index;
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__u32 maxusage;
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__u32 flags;
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__u32 physical; /* physical usage for this field */
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__u32 logical; /* logical usage for this field */
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__u32 application; /* application usage for this field */
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__s32 logical_minimum;
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__s32 logical_maximum;
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__s32 physical_minimum;
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__s32 physical_maximum;
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__u32 unit_exponent;
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__u32 unit;
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};
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/* Fill in report_type, report_id and field_index to get the information on a
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* field.
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*/
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#define HID_FIELD_CONSTANT 0x001
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#define HID_FIELD_VARIABLE 0x002
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#define HID_FIELD_RELATIVE 0x004
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#define HID_FIELD_WRAP 0x008
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#define HID_FIELD_NONLINEAR 0x010
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#define HID_FIELD_NO_PREFERRED 0x020
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#define HID_FIELD_NULL_STATE 0x040
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#define HID_FIELD_VOLATILE 0x080
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#define HID_FIELD_BUFFERED_BYTE 0x100
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struct hiddev_usage_ref {
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__u32 report_type;
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__u32 report_id;
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__u32 field_index;
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__u32 usage_index;
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__u32 usage_code;
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__s32 value;
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};
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/* hiddev_usage_ref_multi is used for sending multiple bytes to a control.
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* It really manifests itself as setting the value of consecutive usages */
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#define HID_MAX_MULTI_USAGES 1024
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struct hiddev_usage_ref_multi {
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struct hiddev_usage_ref uref;
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__u32 num_values;
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__s32 values[HID_MAX_MULTI_USAGES];
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};
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/* FIELD_INDEX_NONE is returned in read() data from the kernel when flags
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* is set to (HIDDEV_FLAG_UREF | HIDDEV_FLAG_REPORT) and a new report has
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* been sent by the device
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*/
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#define HID_FIELD_INDEX_NONE 0xffffffff
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/*
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* Protocol version.
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*/
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#define HID_VERSION 0x010004
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/*
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* IOCTLs (0x00 - 0x7f)
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*/
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#define HIDIOCGVERSION _IOR('H', 0x01, int)
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#define HIDIOCAPPLICATION _IO('H', 0x02)
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#define HIDIOCGDEVINFO _IOR('H', 0x03, struct hiddev_devinfo)
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#define HIDIOCGSTRING _IOR('H', 0x04, struct hiddev_string_descriptor)
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#define HIDIOCINITREPORT _IO('H', 0x05)
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#define HIDIOCGNAME(len) _IOC(_IOC_READ, 'H', 0x06, len)
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#define HIDIOCGREPORT _IOW('H', 0x07, struct hiddev_report_info)
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#define HIDIOCSREPORT _IOW('H', 0x08, struct hiddev_report_info)
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#define HIDIOCGREPORTINFO _IOWR('H', 0x09, struct hiddev_report_info)
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#define HIDIOCGFIELDINFO _IOWR('H', 0x0A, struct hiddev_field_info)
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#define HIDIOCGUSAGE _IOWR('H', 0x0B, struct hiddev_usage_ref)
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#define HIDIOCSUSAGE _IOW('H', 0x0C, struct hiddev_usage_ref)
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#define HIDIOCGUCODE _IOWR('H', 0x0D, struct hiddev_usage_ref)
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#define HIDIOCGFLAG _IOR('H', 0x0E, int)
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#define HIDIOCSFLAG _IOW('H', 0x0F, int)
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#define HIDIOCGCOLLECTIONINDEX _IOW('H', 0x10, struct hiddev_usage_ref)
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#define HIDIOCGCOLLECTIONINFO _IOWR('H', 0x11, struct hiddev_collection_info)
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#define HIDIOCGPHYS(len) _IOC(_IOC_READ, 'H', 0x12, len)
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/* For writing/reading to multiple/consecutive usages */
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#define HIDIOCGUSAGES _IOWR('H', 0x13, struct hiddev_usage_ref_multi)
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#define HIDIOCSUSAGES _IOW('H', 0x14, struct hiddev_usage_ref_multi)
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/*
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* Flags to be used in HIDIOCSFLAG
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*/
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#define HIDDEV_FLAG_UREF 0x1
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#define HIDDEV_FLAG_REPORT 0x2
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#define HIDDEV_FLAGS 0x3
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/* To traverse the input report descriptor info for a HID device, perform the
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* following:
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*
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* rinfo.report_type = HID_REPORT_TYPE_INPUT;
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* rinfo.report_id = HID_REPORT_ID_FIRST;
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* ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo);
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*
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* while (ret >= 0) {
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* for (i = 0; i < rinfo.num_fields; i++) {
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* finfo.report_type = rinfo.report_type;
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* finfo.report_id = rinfo.report_id;
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* finfo.field_index = i;
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* ioctl(fd, HIDIOCGFIELDINFO, &finfo);
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* for (j = 0; j < finfo.maxusage; j++) {
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* uref.report_type = rinfo.report_type;
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* uref.report_id = rinfo.report_id;
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* uref.field_index = i;
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* uref.usage_index = j;
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* ioctl(fd, HIDIOCGUCODE, &uref);
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* ioctl(fd, HIDIOCGUSAGE, &uref);
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* }
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* }
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* rinfo.report_id |= HID_REPORT_ID_NEXT;
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* ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo);
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* }
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*/
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#ifdef __KERNEL__
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/*
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* In-kernel definitions.
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*/
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struct hid_device;
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struct hid_usage;
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struct hid_field;
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struct hid_report;
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#ifdef CONFIG_USB_HIDDEV
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int hiddev_connect(struct hid_device *hid, unsigned int force);
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void hiddev_disconnect(struct hid_device *);
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void hiddev_hid_event(struct hid_device *hid, struct hid_field *field,
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struct hid_usage *usage, __s32 value);
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void hiddev_report_event(struct hid_device *hid, struct hid_report *report);
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int __init hiddev_init(void);
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void hiddev_exit(void);
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#else
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static inline int hiddev_connect(struct hid_device *hid,
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unsigned int force)
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{ return -1; }
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static inline void hiddev_disconnect(struct hid_device *hid) { }
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static inline void hiddev_hid_event(struct hid_device *hid, struct hid_field *field,
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struct hid_usage *usage, __s32 value) { }
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static inline void hiddev_report_event(struct hid_device *hid, struct hid_report *report) { }
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static inline int hiddev_init(void) { return 0; }
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static inline void hiddev_exit(void) { }
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#endif
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#endif
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#endif
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