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b8c9c642db
These get in our way with MX mice. Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
511 lines
15 KiB
C
511 lines
15 KiB
C
#ifndef __HID_H
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#define __HID_H
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/*
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* $Id: hid.h,v 1.24 2001/12/27 10:37:41 vojtech Exp $
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*
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* Copyright (c) 1999 Andreas Gal
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* Copyright (c) 2000-2001 Vojtech Pavlik
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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@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/list.h>
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/*
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* USB HID (Human Interface Device) interface class code
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*/
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#define USB_INTERFACE_CLASS_HID 3
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/*
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* HID class requests
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*/
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#define HID_REQ_GET_REPORT 0x01
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#define HID_REQ_GET_IDLE 0x02
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#define HID_REQ_GET_PROTOCOL 0x03
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#define HID_REQ_SET_REPORT 0x09
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#define HID_REQ_SET_IDLE 0x0A
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#define HID_REQ_SET_PROTOCOL 0x0B
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/*
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* HID class descriptor types
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*/
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#define HID_DT_HID (USB_TYPE_CLASS | 0x01)
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#define HID_DT_REPORT (USB_TYPE_CLASS | 0x02)
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#define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
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/*
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* We parse each description item into this structure. Short items data
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* values are expanded to 32-bit signed int, long items contain a pointer
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* into the data area.
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*/
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struct hid_item {
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unsigned format;
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__u8 size;
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__u8 type;
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__u8 tag;
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union {
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__u8 u8;
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__s8 s8;
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__u16 u16;
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__s16 s16;
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__u32 u32;
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__s32 s32;
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__u8 *longdata;
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} data;
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};
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/*
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* HID report item format
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*/
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#define HID_ITEM_FORMAT_SHORT 0
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#define HID_ITEM_FORMAT_LONG 1
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/*
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* Special tag indicating long items
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*/
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#define HID_ITEM_TAG_LONG 15
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/*
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* HID report descriptor item type (prefix bit 2,3)
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*/
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#define HID_ITEM_TYPE_MAIN 0
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#define HID_ITEM_TYPE_GLOBAL 1
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#define HID_ITEM_TYPE_LOCAL 2
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#define HID_ITEM_TYPE_RESERVED 3
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/*
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* HID report descriptor main item tags
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*/
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#define HID_MAIN_ITEM_TAG_INPUT 8
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#define HID_MAIN_ITEM_TAG_OUTPUT 9
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#define HID_MAIN_ITEM_TAG_FEATURE 11
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#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
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#define HID_MAIN_ITEM_TAG_END_COLLECTION 12
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/*
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* HID report descriptor main item contents
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*/
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#define HID_MAIN_ITEM_CONSTANT 0x001
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#define HID_MAIN_ITEM_VARIABLE 0x002
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#define HID_MAIN_ITEM_RELATIVE 0x004
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#define HID_MAIN_ITEM_WRAP 0x008
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#define HID_MAIN_ITEM_NONLINEAR 0x010
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#define HID_MAIN_ITEM_NO_PREFERRED 0x020
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#define HID_MAIN_ITEM_NULL_STATE 0x040
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#define HID_MAIN_ITEM_VOLATILE 0x080
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#define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
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/*
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* HID report descriptor collection item types
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*/
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#define HID_COLLECTION_PHYSICAL 0
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#define HID_COLLECTION_APPLICATION 1
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#define HID_COLLECTION_LOGICAL 2
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/*
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* HID report descriptor global item tags
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*/
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#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
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#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
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#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
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#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
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#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
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#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
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#define HID_GLOBAL_ITEM_TAG_UNIT 6
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#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
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#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
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#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
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#define HID_GLOBAL_ITEM_TAG_PUSH 10
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#define HID_GLOBAL_ITEM_TAG_POP 11
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/*
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* HID report descriptor local item tags
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*/
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#define HID_LOCAL_ITEM_TAG_USAGE 0
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#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
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#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
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#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
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#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
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#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
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#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
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#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
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#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
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#define HID_LOCAL_ITEM_TAG_DELIMITER 10
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/*
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* HID usage tables
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*/
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#define HID_USAGE_PAGE 0xffff0000
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#define HID_UP_UNDEFINED 0x00000000
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#define HID_UP_GENDESK 0x00010000
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#define HID_UP_KEYBOARD 0x00070000
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#define HID_UP_LED 0x00080000
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#define HID_UP_BUTTON 0x00090000
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#define HID_UP_ORDINAL 0x000a0000
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#define HID_UP_CONSUMER 0x000c0000
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#define HID_UP_DIGITIZER 0x000d0000
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#define HID_UP_PID 0x000f0000
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#define HID_UP_HPVENDOR 0xff7f0000
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#define HID_UP_MSVENDOR 0xff000000
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#define HID_UP_LOGIVENDOR 0x00ff0000
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#define HID_USAGE 0x0000ffff
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#define HID_GD_POINTER 0x00010001
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#define HID_GD_MOUSE 0x00010002
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#define HID_GD_JOYSTICK 0x00010004
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#define HID_GD_GAMEPAD 0x00010005
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#define HID_GD_KEYBOARD 0x00010006
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#define HID_GD_KEYPAD 0x00010007
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#define HID_GD_MULTIAXIS 0x00010008
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#define HID_GD_X 0x00010030
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#define HID_GD_Y 0x00010031
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#define HID_GD_Z 0x00010032
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#define HID_GD_RX 0x00010033
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#define HID_GD_RY 0x00010034
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#define HID_GD_RZ 0x00010035
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#define HID_GD_SLIDER 0x00010036
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#define HID_GD_DIAL 0x00010037
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#define HID_GD_WHEEL 0x00010038
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#define HID_GD_HATSWITCH 0x00010039
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#define HID_GD_BUFFER 0x0001003a
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#define HID_GD_BYTECOUNT 0x0001003b
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#define HID_GD_MOTION 0x0001003c
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#define HID_GD_START 0x0001003d
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#define HID_GD_SELECT 0x0001003e
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#define HID_GD_VX 0x00010040
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#define HID_GD_VY 0x00010041
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#define HID_GD_VZ 0x00010042
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#define HID_GD_VBRX 0x00010043
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#define HID_GD_VBRY 0x00010044
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#define HID_GD_VBRZ 0x00010045
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#define HID_GD_VNO 0x00010046
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#define HID_GD_FEATURE 0x00010047
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#define HID_GD_UP 0x00010090
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#define HID_GD_DOWN 0x00010091
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#define HID_GD_RIGHT 0x00010092
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#define HID_GD_LEFT 0x00010093
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/*
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* HID report types --- Ouch! HID spec says 1 2 3!
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*/
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#define HID_INPUT_REPORT 0
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#define HID_OUTPUT_REPORT 1
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#define HID_FEATURE_REPORT 2
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/*
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* HID device quirks.
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*/
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#define HID_QUIRK_INVERT 0x001
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#define HID_QUIRK_NOTOUCH 0x002
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#define HID_QUIRK_IGNORE 0x004
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#define HID_QUIRK_NOGET 0x008
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#define HID_QUIRK_HIDDEV 0x010
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#define HID_QUIRK_BADPAD 0x020
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#define HID_QUIRK_MULTI_INPUT 0x040
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#define HID_QUIRK_2WHEEL_MOUSE_HACK_7 0x080
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#define HID_QUIRK_2WHEEL_MOUSE_HACK_5 0x100
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#define HID_QUIRK_2WHEEL_MOUSE_HACK_ON 0x200
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/*
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* This is the global environment of the parser. This information is
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* persistent for main-items. The global environment can be saved and
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* restored with PUSH/POP statements.
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*/
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struct hid_global {
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unsigned usage_page;
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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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__s32 unit_exponent;
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unsigned unit;
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unsigned report_id;
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unsigned report_size;
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unsigned report_count;
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};
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/*
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* This is the local environment. It is persistent up the next main-item.
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*/
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#define HID_MAX_DESCRIPTOR_SIZE 4096
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#define HID_MAX_USAGES 1024
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#define HID_DEFAULT_NUM_COLLECTIONS 16
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struct hid_local {
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unsigned usage[HID_MAX_USAGES]; /* usage array */
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unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
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unsigned usage_index;
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unsigned usage_minimum;
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unsigned delimiter_depth;
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unsigned delimiter_branch;
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};
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/*
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* This is the collection stack. We climb up the stack to determine
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* application and function of each field.
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*/
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struct hid_collection {
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unsigned type;
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unsigned usage;
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unsigned level;
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};
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struct hid_usage {
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unsigned hid; /* hid usage code */
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unsigned collection_index; /* index into collection array */
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/* hidinput data */
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__u16 code; /* input driver code */
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__u8 type; /* input driver type */
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__s8 hat_min; /* hat switch fun */
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__s8 hat_max; /* ditto */
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__s8 hat_dir; /* ditto */
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};
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struct hid_input;
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struct hid_field {
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unsigned physical; /* physical usage for this field */
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unsigned logical; /* logical usage for this field */
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unsigned application; /* application usage for this field */
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struct hid_usage *usage; /* usage table for this function */
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unsigned maxusage; /* maximum usage index */
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unsigned flags; /* main-item flags (i.e. volatile,array,constant) */
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unsigned report_offset; /* bit offset in the report */
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unsigned report_size; /* size of this field in the report */
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unsigned report_count; /* number of this field in the report */
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unsigned report_type; /* (input,output,feature) */
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__s32 *value; /* last known value(s) */
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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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__s32 unit_exponent;
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unsigned unit;
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struct hid_report *report; /* associated report */
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unsigned index; /* index into report->field[] */
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/* hidinput data */
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struct hid_input *hidinput; /* associated input structure */
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__u16 dpad; /* dpad input code */
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};
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#define HID_MAX_FIELDS 64
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struct hid_report {
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struct list_head list;
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unsigned id; /* id of this report */
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unsigned type; /* report type */
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struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */
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unsigned maxfield; /* maximum valid field index */
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unsigned size; /* size of the report (bits) */
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struct hid_device *device; /* associated device */
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};
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struct hid_report_enum {
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unsigned numbered;
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struct list_head report_list;
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struct hid_report *report_id_hash[256];
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};
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#define HID_REPORT_TYPES 3
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#define HID_BUFFER_SIZE 64 /* use 64 for compatibility with all possible packetlen */
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#define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
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#define HID_OUTPUT_FIFO_SIZE 64
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struct hid_control_fifo {
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unsigned char dir;
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struct hid_report *report;
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};
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#define HID_CLAIMED_INPUT 1
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#define HID_CLAIMED_HIDDEV 2
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#define HID_CTRL_RUNNING 1
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#define HID_OUT_RUNNING 2
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struct hid_input {
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struct list_head list;
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struct hid_report *report;
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struct input_dev input;
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};
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struct hid_device { /* device report descriptor */
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__u8 *rdesc;
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unsigned rsize;
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struct hid_collection *collection; /* List of HID collections */
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unsigned collection_size; /* Number of allocated hid_collections */
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unsigned maxcollection; /* Number of parsed collections */
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unsigned maxapplication; /* Number of applications */
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unsigned version; /* HID version */
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unsigned country; /* HID country */
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struct hid_report_enum report_enum[HID_REPORT_TYPES];
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struct usb_device *dev; /* USB device */
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struct usb_interface *intf; /* USB interface */
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int ifnum; /* USB interface number */
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unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
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struct urb *urbin; /* Input URB */
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char *inbuf; /* Input buffer */
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dma_addr_t inbuf_dma; /* Input buffer dma */
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struct urb *urbctrl; /* Control URB */
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struct usb_ctrlrequest *cr; /* Control request struct */
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dma_addr_t cr_dma; /* Control request struct dma */
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struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */
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unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */
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char *ctrlbuf; /* Control buffer */
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dma_addr_t ctrlbuf_dma; /* Control buffer dma */
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spinlock_t ctrllock; /* Control fifo spinlock */
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struct urb *urbout; /* Output URB */
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struct hid_report *out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */
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unsigned char outhead, outtail; /* Output pipe fifo head & tail */
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char *outbuf; /* Output buffer */
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dma_addr_t outbuf_dma; /* Output buffer dma */
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spinlock_t outlock; /* Output fifo spinlock */
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unsigned claimed; /* Claimed by hidinput, hiddev? */
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unsigned quirks; /* Various quirks the device can pull on us */
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struct list_head inputs; /* The list of inputs */
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void *hiddev; /* The hiddev structure */
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int minor; /* Hiddev minor number */
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wait_queue_head_t wait; /* For sleeping */
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int open; /* is the device open by anyone? */
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char name[128]; /* Device name */
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char phys[64]; /* Device physical location */
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char uniq[64]; /* Device unique identifier (serial #) */
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void *ff_private; /* Private data for the force-feedback driver */
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void (*ff_exit)(struct hid_device*); /* Called by hid_exit_ff(hid) */
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int (*ff_event)(struct hid_device *hid, struct input_dev *input,
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unsigned int type, unsigned int code, int value);
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};
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#define HID_GLOBAL_STACK_SIZE 4
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#define HID_COLLECTION_STACK_SIZE 4
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struct hid_parser {
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struct hid_global global;
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struct hid_global global_stack[HID_GLOBAL_STACK_SIZE];
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unsigned global_stack_ptr;
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struct hid_local local;
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unsigned collection_stack[HID_COLLECTION_STACK_SIZE];
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unsigned collection_stack_ptr;
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struct hid_device *device;
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};
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struct hid_class_descriptor {
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__u8 bDescriptorType;
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__u16 wDescriptorLength;
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} __attribute__ ((packed));
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struct hid_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u16 bcdHID;
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__u8 bCountryCode;
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__u8 bNumDescriptors;
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struct hid_class_descriptor desc[1];
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} __attribute__ ((packed));
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#ifdef DEBUG
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#include "hid-debug.h"
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#else
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#define hid_dump_input(a,b) do { } while (0)
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#define hid_dump_device(c) do { } while (0)
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#define hid_dump_field(a,b) do { } while (0)
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#define resolv_usage(a) do { } while (0)
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#define resolv_event(a,b) do { } while (0)
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#endif
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#endif
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#ifdef CONFIG_USB_HIDINPUT
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/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
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/* We ignore a few input applications that are not widely used */
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#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001))
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extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32, struct pt_regs *regs);
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extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
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extern int hidinput_connect(struct hid_device *);
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extern void hidinput_disconnect(struct hid_device *);
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#else
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#define IS_INPUT_APPLICATION(a) (0)
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static inline void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs) { }
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static inline void hidinput_report_event(struct hid_device *hid, struct hid_report *report) { }
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static inline int hidinput_connect(struct hid_device *hid) { return -ENODEV; }
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static inline void hidinput_disconnect(struct hid_device *hid) { }
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#endif
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int hid_open(struct hid_device *);
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void hid_close(struct hid_device *);
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int hid_set_field(struct hid_field *, unsigned, __s32);
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void hid_submit_report(struct hid_device *, struct hid_report *, unsigned char dir);
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void hid_init_reports(struct hid_device *hid);
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struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type);
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int hid_wait_io(struct hid_device* hid);
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#ifdef CONFIG_HID_FF
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int hid_ff_init(struct hid_device *hid);
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#else
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static inline int hid_ff_init(struct hid_device *hid) { return -1; }
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#endif
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static inline void hid_ff_exit(struct hid_device *hid)
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{
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if (hid->ff_exit)
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hid->ff_exit(hid);
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}
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static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input,
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unsigned int type, unsigned int code, int value)
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{
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if (hid->ff_event)
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return hid->ff_event(hid, input, type, code, value);
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return -ENOSYS;
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}
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