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1154 lines
34 KiB
1154 lines
34 KiB
/* |
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* Copyright (c) 1999 Andreas Gal |
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* Copyright (c) 2000-2001 Vojtech Pavlik |
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* Copyright (c) 2006-2007 Jiri Kosina |
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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 <[email protected]>, 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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#ifndef __HID_H |
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#define __HID_H |
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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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#include <linux/mod_devicetable.h> /* hid_device_id */ |
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#include <linux/timer.h> |
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#include <linux/workqueue.h> |
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#include <linux/input.h> |
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#include <linux/semaphore.h> |
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#include <linux/power_supply.h> |
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#include <uapi/linux/hid.h> |
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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_SIMULATION 0x00020000 |
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#define HID_UP_GENDEVCTRLS 0x00060000 |
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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_TELEPHONY 0x000b0000 |
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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_HPVENDOR2 0xff010000 |
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#define HID_UP_MSVENDOR 0xff000000 |
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#define HID_UP_CUSTOM 0x00ff0000 |
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#define HID_UP_LOGIVENDOR 0xffbc0000 |
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#define HID_UP_LOGIVENDOR2 0xff090000 |
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#define HID_UP_LOGIVENDOR3 0xff430000 |
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#define HID_UP_LNVENDOR 0xffa00000 |
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#define HID_UP_SENSOR 0x00200000 |
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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_SYSTEM_CONTROL 0x00010080 |
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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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#define HID_DC_BATTERYSTRENGTH 0x00060020 |
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#define HID_CP_CONSUMER_CONTROL 0x000c0001 |
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#define HID_DG_DIGITIZER 0x000d0001 |
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#define HID_DG_PEN 0x000d0002 |
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#define HID_DG_LIGHTPEN 0x000d0003 |
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#define HID_DG_TOUCHSCREEN 0x000d0004 |
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#define HID_DG_TOUCHPAD 0x000d0005 |
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#define HID_DG_STYLUS 0x000d0020 |
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#define HID_DG_PUCK 0x000d0021 |
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#define HID_DG_FINGER 0x000d0022 |
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#define HID_DG_TIPPRESSURE 0x000d0030 |
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#define HID_DG_BARRELPRESSURE 0x000d0031 |
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#define HID_DG_INRANGE 0x000d0032 |
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#define HID_DG_TOUCH 0x000d0033 |
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#define HID_DG_UNTOUCH 0x000d0034 |
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#define HID_DG_TAP 0x000d0035 |
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#define HID_DG_TABLETFUNCTIONKEY 0x000d0039 |
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#define HID_DG_PROGRAMCHANGEKEY 0x000d003a |
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#define HID_DG_INVERT 0x000d003c |
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#define HID_DG_TIPSWITCH 0x000d0042 |
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#define HID_DG_TIPSWITCH2 0x000d0043 |
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#define HID_DG_BARRELSWITCH 0x000d0044 |
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#define HID_DG_ERASER 0x000d0045 |
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#define HID_DG_TABLETPICK 0x000d0046 |
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#define HID_CP_CONSUMERCONTROL 0x000c0001 |
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#define HID_CP_NUMERICKEYPAD 0x000c0002 |
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#define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003 |
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#define HID_CP_MICROPHONE 0x000c0004 |
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#define HID_CP_HEADPHONE 0x000c0005 |
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#define HID_CP_GRAPHICEQUALIZER 0x000c0006 |
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#define HID_CP_FUNCTIONBUTTONS 0x000c0036 |
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#define HID_CP_SELECTION 0x000c0080 |
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#define HID_CP_MEDIASELECTION 0x000c0087 |
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#define HID_CP_SELECTDISC 0x000c00ba |
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#define HID_CP_PLAYBACKSPEED 0x000c00f1 |
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#define HID_CP_PROXIMITY 0x000c0109 |
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#define HID_CP_SPEAKERSYSTEM 0x000c0160 |
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#define HID_CP_CHANNELLEFT 0x000c0161 |
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#define HID_CP_CHANNELRIGHT 0x000c0162 |
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#define HID_CP_CHANNELCENTER 0x000c0163 |
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#define HID_CP_CHANNELFRONT 0x000c0164 |
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#define HID_CP_CHANNELCENTERFRONT 0x000c0165 |
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#define HID_CP_CHANNELSIDE 0x000c0166 |
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#define HID_CP_CHANNELSURROUND 0x000c0167 |
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#define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168 |
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#define HID_CP_CHANNELTOP 0x000c0169 |
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#define HID_CP_CHANNELUNKNOWN 0x000c016a |
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#define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180 |
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#define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200 |
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#define HID_DG_CONFIDENCE 0x000d0047 |
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#define HID_DG_WIDTH 0x000d0048 |
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#define HID_DG_HEIGHT 0x000d0049 |
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#define HID_DG_CONTACTID 0x000d0051 |
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#define HID_DG_INPUTMODE 0x000d0052 |
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#define HID_DG_DEVICEINDEX 0x000d0053 |
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#define HID_DG_CONTACTCOUNT 0x000d0054 |
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#define HID_DG_CONTACTMAX 0x000d0055 |
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#define HID_DG_BUTTONTYPE 0x000d0059 |
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#define HID_DG_BARRELSWITCH2 0x000d005a |
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#define HID_DG_TOOLSERIALNUMBER 0x000d005b |
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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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#define HID_REPORT_TYPES 3 |
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/* |
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* HID connect requests |
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*/ |
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#define HID_CONNECT_HIDINPUT 0x01 |
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#define HID_CONNECT_HIDINPUT_FORCE 0x02 |
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#define HID_CONNECT_HIDRAW 0x04 |
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#define HID_CONNECT_HIDDEV 0x08 |
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#define HID_CONNECT_HIDDEV_FORCE 0x10 |
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#define HID_CONNECT_FF 0x20 |
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#define HID_CONNECT_DRIVER 0x40 |
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#define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ |
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HID_CONNECT_HIDDEV|HID_CONNECT_FF) |
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/* |
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* HID device quirks. |
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*/ |
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/* |
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* Increase this if you need to configure more HID quirks at module load time |
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*/ |
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#define MAX_USBHID_BOOT_QUIRKS 4 |
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#define HID_QUIRK_INVERT 0x00000001 |
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#define HID_QUIRK_NOTOUCH 0x00000002 |
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#define HID_QUIRK_IGNORE 0x00000004 |
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#define HID_QUIRK_NOGET 0x00000008 |
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#define HID_QUIRK_HIDDEV_FORCE 0x00000010 |
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#define HID_QUIRK_BADPAD 0x00000020 |
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#define HID_QUIRK_MULTI_INPUT 0x00000040 |
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#define HID_QUIRK_HIDINPUT_FORCE 0x00000080 |
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#define HID_QUIRK_NO_EMPTY_INPUT 0x00000100 |
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#define HID_QUIRK_NO_INIT_INPUT_REPORTS 0x00000200 |
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#define HID_QUIRK_ALWAYS_POLL 0x00000400 |
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#define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000 |
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#define HID_QUIRK_SKIP_OUTPUT_REPORT_ID 0x00020000 |
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#define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP 0x00040000 |
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#define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000 |
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#define HID_QUIRK_NO_INIT_REPORTS 0x20000000 |
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#define HID_QUIRK_NO_IGNORE 0x40000000 |
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#define HID_QUIRK_NO_INPUT_SYNC 0x80000000 |
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/* |
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* HID device groups |
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* |
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* Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h |
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* and has a value of 0x0000 |
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*/ |
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#define HID_GROUP_GENERIC 0x0001 |
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#define HID_GROUP_MULTITOUCH 0x0002 |
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#define HID_GROUP_SENSOR_HUB 0x0003 |
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#define HID_GROUP_MULTITOUCH_WIN_8 0x0004 |
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/* |
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* Vendor specific HID device groups |
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*/ |
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#define HID_GROUP_RMI 0x0100 |
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#define HID_GROUP_WACOM 0x0101 |
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#define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102 |
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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_USAGES 12288 |
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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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unsigned usage_index; /* index into usage 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 256 |
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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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#define HID_MAX_IDS 256 |
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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[HID_MAX_IDS]; |
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}; |
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#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ |
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#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ |
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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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char *raw_report; |
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}; |
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struct hid_output_fifo { |
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struct hid_report *report; |
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char *raw_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_CLAIMED_HIDRAW 4 |
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#define HID_CLAIMED_DRIVER 8 |
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#define HID_STAT_ADDED 1 |
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#define HID_STAT_PARSED 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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enum hid_type { |
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HID_TYPE_OTHER = 0, |
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HID_TYPE_USBMOUSE, |
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HID_TYPE_USBNONE |
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}; |
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struct hid_driver; |
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struct hid_ll_driver; |
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struct hid_device { /* device report descriptor */ |
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__u8 *dev_rdesc; |
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unsigned dev_rsize; |
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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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__u16 bus; /* BUS ID */ |
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__u16 group; /* Report group */ |
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__u32 vendor; /* Vendor ID */ |
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__u32 product; /* Product ID */ |
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__u32 version; /* HID version */ |
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enum hid_type type; /* device type (mouse, kbd, ...) */ |
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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 work_struct led_work; /* delayed LED worker */ |
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struct semaphore driver_lock; /* protects the current driver, except during input */ |
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struct semaphore driver_input_lock; /* protects the current driver */ |
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struct device dev; /* device */ |
|
struct hid_driver *driver; |
|
struct hid_ll_driver *ll_driver; |
|
|
|
#ifdef CONFIG_HID_BATTERY_STRENGTH |
|
/* |
|
* Power supply information for HID devices which report |
|
* battery strength. power_supply was successfully registered if |
|
* battery is non-NULL. |
|
*/ |
|
struct power_supply *battery; |
|
__s32 battery_min; |
|
__s32 battery_max; |
|
__s32 battery_report_type; |
|
__s32 battery_report_id; |
|
#endif |
|
|
|
unsigned int status; /* see STAT flags above */ |
|
unsigned claimed; /* Claimed by hidinput, hiddev? */ |
|
unsigned quirks; /* Various quirks the device can pull on us */ |
|
bool io_started; /* Protected by driver_lock. If IO has started */ |
|
|
|
struct list_head inputs; /* The list of inputs */ |
|
void *hiddev; /* The hiddev structure */ |
|
void *hidraw; |
|
int minor; /* Hiddev minor number */ |
|
|
|
int open; /* is the device open by anyone? */ |
|
char name[128]; /* Device name */ |
|
char phys[64]; /* Device physical location */ |
|
char uniq[64]; /* Device unique identifier (serial #) */ |
|
|
|
void *driver_data; |
|
|
|
/* temporary hid_ff handling (until moved to the drivers) */ |
|
int (*ff_init)(struct hid_device *); |
|
|
|
/* hiddev event handler */ |
|
int (*hiddev_connect)(struct hid_device *, unsigned int); |
|
void (*hiddev_disconnect)(struct hid_device *); |
|
void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, |
|
struct hid_usage *, __s32); |
|
void (*hiddev_report_event) (struct hid_device *, struct hid_report *); |
|
|
|
/* debugging support via debugfs */ |
|
unsigned short debug; |
|
struct dentry *debug_dir; |
|
struct dentry *debug_rdesc; |
|
struct dentry *debug_events; |
|
struct list_head debug_list; |
|
spinlock_t debug_list_lock; |
|
wait_queue_head_t debug_wait; |
|
}; |
|
|
|
#define to_hid_device(pdev) \ |
|
container_of(pdev, struct hid_device, dev) |
|
|
|
static inline void *hid_get_drvdata(struct hid_device *hdev) |
|
{ |
|
return dev_get_drvdata(&hdev->dev); |
|
} |
|
|
|
static inline void hid_set_drvdata(struct hid_device *hdev, void *data) |
|
{ |
|
dev_set_drvdata(&hdev->dev, data); |
|
} |
|
|
|
#define HID_GLOBAL_STACK_SIZE 4 |
|
#define HID_COLLECTION_STACK_SIZE 4 |
|
|
|
#define HID_SCAN_FLAG_MT_WIN_8 BIT(0) |
|
#define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1) |
|
#define HID_SCAN_FLAG_GD_POINTER BIT(2) |
|
|
|
struct hid_parser { |
|
struct hid_global global; |
|
struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; |
|
unsigned global_stack_ptr; |
|
struct hid_local local; |
|
unsigned collection_stack[HID_COLLECTION_STACK_SIZE]; |
|
unsigned collection_stack_ptr; |
|
struct hid_device *device; |
|
unsigned scan_flags; |
|
}; |
|
|
|
struct hid_class_descriptor { |
|
__u8 bDescriptorType; |
|
__le16 wDescriptorLength; |
|
} __attribute__ ((packed)); |
|
|
|
struct hid_descriptor { |
|
__u8 bLength; |
|
__u8 bDescriptorType; |
|
__le16 bcdHID; |
|
__u8 bCountryCode; |
|
__u8 bNumDescriptors; |
|
|
|
struct hid_class_descriptor desc[1]; |
|
} __attribute__ ((packed)); |
|
|
|
#define HID_DEVICE(b, g, ven, prod) \ |
|
.bus = (b), .group = (g), .vendor = (ven), .product = (prod) |
|
#define HID_USB_DEVICE(ven, prod) \ |
|
.bus = BUS_USB, .vendor = (ven), .product = (prod) |
|
#define HID_BLUETOOTH_DEVICE(ven, prod) \ |
|
.bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) |
|
#define HID_I2C_DEVICE(ven, prod) \ |
|
.bus = BUS_I2C, .vendor = (ven), .product = (prod) |
|
|
|
#define HID_REPORT_ID(rep) \ |
|
.report_type = (rep) |
|
#define HID_USAGE_ID(uhid, utype, ucode) \ |
|
.usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) |
|
/* we don't want to catch types and codes equal to 0 */ |
|
#define HID_TERMINATOR (HID_ANY_ID - 1) |
|
|
|
struct hid_report_id { |
|
__u32 report_type; |
|
}; |
|
struct hid_usage_id { |
|
__u32 usage_hid; |
|
__u32 usage_type; |
|
__u32 usage_code; |
|
}; |
|
|
|
/** |
|
* struct hid_driver |
|
* @name: driver name (e.g. "Footech_bar-wheel") |
|
* @id_table: which devices is this driver for (must be non-NULL for probe |
|
* to be called) |
|
* @dyn_list: list of dynamically added device ids |
|
* @dyn_lock: lock protecting @dyn_list |
|
* @probe: new device inserted |
|
* @remove: device removed (NULL if not a hot-plug capable driver) |
|
* @report_table: on which reports to call raw_event (NULL means all) |
|
* @raw_event: if report in report_table, this hook is called (NULL means nop) |
|
* @usage_table: on which events to call event (NULL means all) |
|
* @event: if usage in usage_table, this hook is called (NULL means nop) |
|
* @report: this hook is called after parsing a report (NULL means nop) |
|
* @report_fixup: called before report descriptor parsing (NULL means nop) |
|
* @input_mapping: invoked on input registering before mapping an usage |
|
* @input_mapped: invoked on input registering after mapping an usage |
|
* @input_configured: invoked just before the device is registered |
|
* @feature_mapping: invoked on feature registering |
|
* @suspend: invoked on suspend (NULL means nop) |
|
* @resume: invoked on resume if device was not reset (NULL means nop) |
|
* @reset_resume: invoked on resume if device was reset (NULL means nop) |
|
* |
|
* probe should return -errno on error, or 0 on success. During probe, |
|
* input will not be passed to raw_event unless hid_device_io_start is |
|
* called. |
|
* |
|
* raw_event and event should return 0 on no action performed, 1 when no |
|
* further processing should be done and negative on error |
|
* |
|
* input_mapping shall return a negative value to completely ignore this usage |
|
* (e.g. doubled or invalid usage), zero to continue with parsing of this |
|
* usage by generic code (no special handling needed) or positive to skip |
|
* generic parsing (needed special handling which was done in the hook already) |
|
* input_mapped shall return negative to inform the layer that this usage |
|
* should not be considered for further processing or zero to notify that |
|
* no processing was performed and should be done in a generic manner |
|
* Both these functions may be NULL which means the same behavior as returning |
|
* zero from them. |
|
*/ |
|
struct hid_driver { |
|
char *name; |
|
const struct hid_device_id *id_table; |
|
|
|
struct list_head dyn_list; |
|
spinlock_t dyn_lock; |
|
|
|
int (*probe)(struct hid_device *dev, const struct hid_device_id *id); |
|
void (*remove)(struct hid_device *dev); |
|
|
|
const struct hid_report_id *report_table; |
|
int (*raw_event)(struct hid_device *hdev, struct hid_report *report, |
|
u8 *data, int size); |
|
const struct hid_usage_id *usage_table; |
|
int (*event)(struct hid_device *hdev, struct hid_field *field, |
|
struct hid_usage *usage, __s32 value); |
|
void (*report)(struct hid_device *hdev, struct hid_report *report); |
|
|
|
__u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, |
|
unsigned int *size); |
|
|
|
int (*input_mapping)(struct hid_device *hdev, |
|
struct hid_input *hidinput, struct hid_field *field, |
|
struct hid_usage *usage, unsigned long **bit, int *max); |
|
int (*input_mapped)(struct hid_device *hdev, |
|
struct hid_input *hidinput, struct hid_field *field, |
|
struct hid_usage *usage, unsigned long **bit, int *max); |
|
int (*input_configured)(struct hid_device *hdev, |
|
struct hid_input *hidinput); |
|
void (*feature_mapping)(struct hid_device *hdev, |
|
struct hid_field *field, |
|
struct hid_usage *usage); |
|
#ifdef CONFIG_PM |
|
int (*suspend)(struct hid_device *hdev, pm_message_t message); |
|
int (*resume)(struct hid_device *hdev); |
|
int (*reset_resume)(struct hid_device *hdev); |
|
#endif |
|
/* private: */ |
|
struct device_driver driver; |
|
}; |
|
|
|
#define to_hid_driver(pdrv) \ |
|
container_of(pdrv, struct hid_driver, driver) |
|
|
|
/** |
|
* hid_ll_driver - low level driver callbacks |
|
* @start: called on probe to start the device |
|
* @stop: called on remove |
|
* @open: called by input layer on open |
|
* @close: called by input layer on close |
|
* @parse: this method is called only once to parse the device data, |
|
* shouldn't allocate anything to not leak memory |
|
* @request: send report request to device (e.g. feature report) |
|
* @wait: wait for buffered io to complete (send/recv reports) |
|
* @raw_request: send raw report request to device (e.g. feature report) |
|
* @output_report: send output report to device |
|
* @idle: send idle request to device |
|
*/ |
|
struct hid_ll_driver { |
|
int (*start)(struct hid_device *hdev); |
|
void (*stop)(struct hid_device *hdev); |
|
|
|
int (*open)(struct hid_device *hdev); |
|
void (*close)(struct hid_device *hdev); |
|
|
|
int (*power)(struct hid_device *hdev, int level); |
|
|
|
int (*parse)(struct hid_device *hdev); |
|
|
|
void (*request)(struct hid_device *hdev, |
|
struct hid_report *report, int reqtype); |
|
|
|
int (*wait)(struct hid_device *hdev); |
|
|
|
int (*raw_request) (struct hid_device *hdev, unsigned char reportnum, |
|
__u8 *buf, size_t len, unsigned char rtype, |
|
int reqtype); |
|
|
|
int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len); |
|
|
|
int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype); |
|
}; |
|
|
|
#define PM_HINT_FULLON 1<<5 |
|
#define PM_HINT_NORMAL 1<<1 |
|
|
|
/* Applications from HID Usage Tables 4/8/99 Version 1.1 */ |
|
/* We ignore a few input applications that are not widely used */ |
|
#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006))) |
|
|
|
/* HID core API */ |
|
|
|
extern int hid_debug; |
|
|
|
extern bool hid_ignore(struct hid_device *); |
|
extern int hid_add_device(struct hid_device *); |
|
extern void hid_destroy_device(struct hid_device *); |
|
|
|
extern int __must_check __hid_register_driver(struct hid_driver *, |
|
struct module *, const char *mod_name); |
|
|
|
/* use a define to avoid include chaining to get THIS_MODULE & friends */ |
|
#define hid_register_driver(driver) \ |
|
__hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
|
|
|
extern void hid_unregister_driver(struct hid_driver *); |
|
|
|
/** |
|
* module_hid_driver() - Helper macro for registering a HID driver |
|
* @__hid_driver: hid_driver struct |
|
* |
|
* Helper macro for HID drivers which do not do anything special in module |
|
* init/exit. This eliminates a lot of boilerplate. Each module may only |
|
* use this macro once, and calling it replaces module_init() and module_exit() |
|
*/ |
|
#define module_hid_driver(__hid_driver) \ |
|
module_driver(__hid_driver, hid_register_driver, \ |
|
hid_unregister_driver) |
|
|
|
extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); |
|
extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); |
|
extern int hidinput_connect(struct hid_device *hid, unsigned int force); |
|
extern void hidinput_disconnect(struct hid_device *); |
|
|
|
int hid_set_field(struct hid_field *, unsigned, __s32); |
|
int hid_input_report(struct hid_device *, int type, u8 *, int, int); |
|
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); |
|
struct hid_field *hidinput_get_led_field(struct hid_device *hid); |
|
unsigned int hidinput_count_leds(struct hid_device *hid); |
|
__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); |
|
void hid_output_report(struct hid_report *report, __u8 *data); |
|
void __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype); |
|
u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); |
|
struct hid_device *hid_allocate_device(void); |
|
struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id); |
|
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); |
|
struct hid_report *hid_validate_values(struct hid_device *hid, |
|
unsigned int type, unsigned int id, |
|
unsigned int field_index, |
|
unsigned int report_counts); |
|
int hid_open_report(struct hid_device *device); |
|
int hid_check_keys_pressed(struct hid_device *hid); |
|
int hid_connect(struct hid_device *hid, unsigned int connect_mask); |
|
void hid_disconnect(struct hid_device *hid); |
|
const struct hid_device_id *hid_match_id(struct hid_device *hdev, |
|
const struct hid_device_id *id); |
|
s32 hid_snto32(__u32 value, unsigned n); |
|
__u32 hid_field_extract(const struct hid_device *hid, __u8 *report, |
|
unsigned offset, unsigned n); |
|
|
|
/** |
|
* hid_device_io_start - enable HID input during probe, remove |
|
* |
|
* @hid - the device |
|
* |
|
* This should only be called during probe or remove and only be |
|
* called by the thread calling probe or remove. It will allow |
|
* incoming packets to be delivered to the driver. |
|
*/ |
|
static inline void hid_device_io_start(struct hid_device *hid) { |
|
if (hid->io_started) { |
|
dev_warn(&hid->dev, "io already started\n"); |
|
return; |
|
} |
|
hid->io_started = true; |
|
up(&hid->driver_input_lock); |
|
} |
|
|
|
/** |
|
* hid_device_io_stop - disable HID input during probe, remove |
|
* |
|
* @hid - the device |
|
* |
|
* Should only be called after hid_device_io_start. It will prevent |
|
* incoming packets from going to the driver for the duration of |
|
* probe, remove. If called during probe, packets will still go to the |
|
* driver after probe is complete. This function should only be called |
|
* by the thread calling probe or remove. |
|
*/ |
|
static inline void hid_device_io_stop(struct hid_device *hid) { |
|
if (!hid->io_started) { |
|
dev_warn(&hid->dev, "io already stopped\n"); |
|
return; |
|
} |
|
hid->io_started = false; |
|
down(&hid->driver_input_lock); |
|
} |
|
|
|
/** |
|
* hid_map_usage - map usage input bits |
|
* |
|
* @hidinput: hidinput which we are interested in |
|
* @usage: usage to fill in |
|
* @bit: pointer to input->{}bit (out parameter) |
|
* @max: maximal valid usage->code to consider later (out parameter) |
|
* @type: input event type (EV_KEY, EV_REL, ...) |
|
* @c: code which corresponds to this usage and type |
|
*/ |
|
static inline void hid_map_usage(struct hid_input *hidinput, |
|
struct hid_usage *usage, unsigned long **bit, int *max, |
|
__u8 type, __u16 c) |
|
{ |
|
struct input_dev *input = hidinput->input; |
|
|
|
usage->type = type; |
|
usage->code = c; |
|
|
|
switch (type) { |
|
case EV_ABS: |
|
*bit = input->absbit; |
|
*max = ABS_MAX; |
|
break; |
|
case EV_REL: |
|
*bit = input->relbit; |
|
*max = REL_MAX; |
|
break; |
|
case EV_KEY: |
|
*bit = input->keybit; |
|
*max = KEY_MAX; |
|
break; |
|
case EV_LED: |
|
*bit = input->ledbit; |
|
*max = LED_MAX; |
|
break; |
|
} |
|
} |
|
|
|
/** |
|
* hid_map_usage_clear - map usage input bits and clear the input bit |
|
* |
|
* The same as hid_map_usage, except the @c bit is also cleared in supported |
|
* bits (@bit). |
|
*/ |
|
static inline void hid_map_usage_clear(struct hid_input *hidinput, |
|
struct hid_usage *usage, unsigned long **bit, int *max, |
|
__u8 type, __u16 c) |
|
{ |
|
hid_map_usage(hidinput, usage, bit, max, type, c); |
|
clear_bit(c, *bit); |
|
} |
|
|
|
/** |
|
* hid_parse - parse HW reports |
|
* |
|
* @hdev: hid device |
|
* |
|
* Call this from probe after you set up the device (if needed). Your |
|
* report_fixup will be called (if non-NULL) after reading raw report from |
|
* device before passing it to hid layer for real parsing. |
|
*/ |
|
static inline int __must_check hid_parse(struct hid_device *hdev) |
|
{ |
|
return hid_open_report(hdev); |
|
} |
|
|
|
/** |
|
* hid_hw_start - start underlaying HW |
|
* |
|
* @hdev: hid device |
|
* @connect_mask: which outputs to connect, see HID_CONNECT_* |
|
* |
|
* Call this in probe function *after* hid_parse. This will setup HW buffers |
|
* and start the device (if not deffered to device open). hid_hw_stop must be |
|
* called if this was successful. |
|
*/ |
|
static inline int __must_check hid_hw_start(struct hid_device *hdev, |
|
unsigned int connect_mask) |
|
{ |
|
int ret = hdev->ll_driver->start(hdev); |
|
if (ret || !connect_mask) |
|
return ret; |
|
ret = hid_connect(hdev, connect_mask); |
|
if (ret) |
|
hdev->ll_driver->stop(hdev); |
|
return ret; |
|
} |
|
|
|
/** |
|
* hid_hw_stop - stop underlaying HW |
|
* |
|
* @hdev: hid device |
|
* |
|
* This is usually called from remove function or from probe when something |
|
* failed and hid_hw_start was called already. |
|
*/ |
|
static inline void hid_hw_stop(struct hid_device *hdev) |
|
{ |
|
hid_disconnect(hdev); |
|
hdev->ll_driver->stop(hdev); |
|
} |
|
|
|
/** |
|
* hid_hw_open - signal underlaying HW to start delivering events |
|
* |
|
* @hdev: hid device |
|
* |
|
* Tell underlying HW to start delivering events from the device. |
|
* This function should be called sometime after successful call |
|
* to hid_hiw_start(). |
|
*/ |
|
static inline int __must_check hid_hw_open(struct hid_device *hdev) |
|
{ |
|
return hdev->ll_driver->open(hdev); |
|
} |
|
|
|
/** |
|
* hid_hw_close - signal underlaying HW to stop delivering events |
|
* |
|
* @hdev: hid device |
|
* |
|
* This function indicates that we are not interested in the events |
|
* from this device anymore. Delivery of events may or may not stop, |
|
* depending on the number of users still outstanding. |
|
*/ |
|
static inline void hid_hw_close(struct hid_device *hdev) |
|
{ |
|
hdev->ll_driver->close(hdev); |
|
} |
|
|
|
/** |
|
* hid_hw_power - requests underlying HW to go into given power mode |
|
* |
|
* @hdev: hid device |
|
* @level: requested power level (one of %PM_HINT_* defines) |
|
* |
|
* This function requests underlying hardware to enter requested power |
|
* mode. |
|
*/ |
|
|
|
static inline int hid_hw_power(struct hid_device *hdev, int level) |
|
{ |
|
return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; |
|
} |
|
|
|
|
|
/** |
|
* hid_hw_request - send report request to device |
|
* |
|
* @hdev: hid device |
|
* @report: report to send |
|
* @reqtype: hid request type |
|
*/ |
|
static inline void hid_hw_request(struct hid_device *hdev, |
|
struct hid_report *report, int reqtype) |
|
{ |
|
if (hdev->ll_driver->request) |
|
return hdev->ll_driver->request(hdev, report, reqtype); |
|
|
|
__hid_request(hdev, report, reqtype); |
|
} |
|
|
|
/** |
|
* hid_hw_raw_request - send report request to device |
|
* |
|
* @hdev: hid device |
|
* @reportnum: report ID |
|
* @buf: in/out data to transfer |
|
* @len: length of buf |
|
* @rtype: HID report type |
|
* @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT |
|
* |
|
* @return: count of data transfered, negative if error |
|
* |
|
* Same behavior as hid_hw_request, but with raw buffers instead. |
|
*/ |
|
static inline int hid_hw_raw_request(struct hid_device *hdev, |
|
unsigned char reportnum, __u8 *buf, |
|
size_t len, unsigned char rtype, int reqtype) |
|
{ |
|
if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) |
|
return -EINVAL; |
|
|
|
return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, |
|
rtype, reqtype); |
|
} |
|
|
|
/** |
|
* hid_hw_output_report - send output report to device |
|
* |
|
* @hdev: hid device |
|
* @buf: raw data to transfer |
|
* @len: length of buf |
|
* |
|
* @return: count of data transfered, negative if error |
|
*/ |
|
static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, |
|
size_t len) |
|
{ |
|
if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) |
|
return -EINVAL; |
|
|
|
if (hdev->ll_driver->output_report) |
|
return hdev->ll_driver->output_report(hdev, buf, len); |
|
|
|
return -ENOSYS; |
|
} |
|
|
|
/** |
|
* hid_hw_idle - send idle request to device |
|
* |
|
* @hdev: hid device |
|
* @report: report to control |
|
* @idle: idle state |
|
* @reqtype: hid request type |
|
*/ |
|
static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, |
|
int reqtype) |
|
{ |
|
if (hdev->ll_driver->idle) |
|
return hdev->ll_driver->idle(hdev, report, idle, reqtype); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* hid_hw_wait - wait for buffered io to complete |
|
* |
|
* @hdev: hid device |
|
*/ |
|
static inline void hid_hw_wait(struct hid_device *hdev) |
|
{ |
|
if (hdev->ll_driver->wait) |
|
hdev->ll_driver->wait(hdev); |
|
} |
|
|
|
/** |
|
* hid_report_len - calculate the report length |
|
* |
|
* @report: the report we want to know the length |
|
*/ |
|
static inline int hid_report_len(struct hid_report *report) |
|
{ |
|
/* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */ |
|
return ((report->size - 1) >> 3) + 1 + (report->id > 0); |
|
} |
|
|
|
int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, |
|
int interrupt); |
|
|
|
/* HID quirks API */ |
|
u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct); |
|
int usbhid_quirks_init(char **quirks_param); |
|
void usbhid_quirks_exit(void); |
|
|
|
#ifdef CONFIG_HID_PID |
|
int hid_pidff_init(struct hid_device *hid); |
|
#else |
|
#define hid_pidff_init NULL |
|
#endif |
|
|
|
#define dbg_hid(format, arg...) \ |
|
do { \ |
|
if (hid_debug) \ |
|
printk(KERN_DEBUG "%s: " format, __FILE__, ##arg); \ |
|
} while (0) |
|
|
|
#define hid_printk(level, hid, fmt, arg...) \ |
|
dev_printk(level, &(hid)->dev, fmt, ##arg) |
|
#define hid_emerg(hid, fmt, arg...) \ |
|
dev_emerg(&(hid)->dev, fmt, ##arg) |
|
#define hid_crit(hid, fmt, arg...) \ |
|
dev_crit(&(hid)->dev, fmt, ##arg) |
|
#define hid_alert(hid, fmt, arg...) \ |
|
dev_alert(&(hid)->dev, fmt, ##arg) |
|
#define hid_err(hid, fmt, arg...) \ |
|
dev_err(&(hid)->dev, fmt, ##arg) |
|
#define hid_notice(hid, fmt, arg...) \ |
|
dev_notice(&(hid)->dev, fmt, ##arg) |
|
#define hid_warn(hid, fmt, arg...) \ |
|
dev_warn(&(hid)->dev, fmt, ##arg) |
|
#define hid_info(hid, fmt, arg...) \ |
|
dev_info(&(hid)->dev, fmt, ##arg) |
|
#define hid_dbg(hid, fmt, arg...) \ |
|
dev_dbg(&(hid)->dev, fmt, ##arg) |
|
|
|
#endif
|
|
|