patch-2.2.18 linux/drivers/usb/hid.h

• Lines: 342
• Date: Tue Nov 28 17:21:20 2000
• Orig file: v2.2.17/drivers/usb/hid.h
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/hid.h linux/drivers/usb/hid.h
@@ -0,0 +1,341 @@
+#ifndef __HID_H
+#define __HID_H
+
+/*
+ * $Id: hid.h,v 1.7 2000/05/31 22:57:48 vojtech Exp $
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000 Vojtech Pavlik
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
+ * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/types.h>
+#include <linux/malloc.h>
+#include <linux/list.h>
+
+/*
+ * USB HID (Human Interface Device) interface class code
+ */
+
+#define USB_INTERFACE_CLASS_HID		3
+
+/*
+ * We parse each description item into this structure. Short items data
+ * values are expanded to 32-bit signed int, long items contain a pointer
+ * into the data area.
+ */
+
+struct hid_item {
+	unsigned  format;
+	__u8      size;
+	__u8      type;
+	__u8      tag;
+	union {
+	    __u8   u8;
+	    __s8   s8;
+	    __u16  u16;
+	    __s16  s16;
+	    __u32  u32;
+	    __s32  s32;
+	    __u8  *longdata;
+	} data;
+};
+
+/*
+ * HID report item format
+ */
+
+#define HID_ITEM_FORMAT_SHORT	0
+#define HID_ITEM_FORMAT_LONG	1
+
+/*
+ * Special tag indicating long items
+ */
+
+#define HID_ITEM_TAG_LONG	15
+
+/*
+ * HID report descriptor item type (prefix bit 2,3)
+ */
+
+#define HID_ITEM_TYPE_MAIN		0
+#define HID_ITEM_TYPE_GLOBAL		1
+#define HID_ITEM_TYPE_LOCAL		2
+#define HID_ITEM_TYPE_RESERVED		3
+
+/*
+ * HID report descriptor main item tags
+ */
+
+#define HID_MAIN_ITEM_TAG_INPUT			8
+#define HID_MAIN_ITEM_TAG_OUTPUT		9
+#define HID_MAIN_ITEM_TAG_FEATURE		11
+#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION	10
+#define HID_MAIN_ITEM_TAG_END_COLLECTION	12
+
+/*
+ * HID report descriptor main item contents
+ */
+
+#define HID_MAIN_ITEM_CONSTANT		0x001
+#define HID_MAIN_ITEM_VARIABLE		0x002
+#define HID_MAIN_ITEM_RELATIVE		0x004
+#define HID_MAIN_ITEM_WRAP		0x008	
+#define HID_MAIN_ITEM_NONLINEAR		0x010
+#define HID_MAIN_ITEM_NO_PREFERRED	0x020
+#define HID_MAIN_ITEM_NULL_STATE	0x040
+#define HID_MAIN_ITEM_VOLATILE		0x080
+#define HID_MAIN_ITEM_BUFFERED_BYTE	0x100
+
+/*
+ * HID report descriptor collection item types
+ */
+
+#define HID_COLLECTION_PHYSICAL		0
+#define HID_COLLECTION_APPLICATION	1
+#define HID_COLLECTION_LOGICAL		2
+
+/*
+ * HID report descriptor global item tags
+ */
+
+#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE		0
+#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM	1
+#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM	2
+#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM	3
+#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM	4
+#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT	5
+#define HID_GLOBAL_ITEM_TAG_UNIT		6
+#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE		7
+#define HID_GLOBAL_ITEM_TAG_REPORT_ID		8
+#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT	9
+#define HID_GLOBAL_ITEM_TAG_PUSH		10
+#define HID_GLOBAL_ITEM_TAG_POP			11
+
+/*
+ * HID report descriptor local item tags
+ */
+
+#define HID_LOCAL_ITEM_TAG_USAGE		0
+#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM	1
+#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM	2
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX	3
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM	4
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM	5
+#define HID_LOCAL_ITEM_TAG_STRING_INDEX		7
+#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM	8
+#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM	9
+#define HID_LOCAL_ITEM_TAG_DELIMITER		10
+
+/*
+ * HID usage tables
+ */
+
+#define HID_USAGE_PAGE		0xffff0000
+
+#define HID_UP_GENDESK 		0x00010000
+#define HID_UP_KEYBOARD 	0x00070000
+#define HID_UP_LED 		0x00080000
+#define HID_UP_BUTTON 		0x00090000
+#define HID_UP_CONSUMER		0x000c0000
+#define HID_UP_DIGITIZER 	0x000d0000
+#define HID_UP_PID 		0x000f0000
+
+#define HID_USAGE		0x0000ffff
+
+#define HID_GD_POINTER		0x00010001
+#define HID_GD_MOUSE		0x00010002
+#define HID_GD_JOYSTICK		0x00010004
+#define HID_GD_GAMEPAD		0x00010005
+#define HID_GD_HATSWITCH	0x00010039
+
+/*
+ * HID report types --- Ouch! HID spec says 1 2 3!
+ */
+
+#define HID_INPUT_REPORT	0
+#define HID_OUTPUT_REPORT	1
+#define HID_FEATURE_REPORT	2
+
+/*
+ * HID device quirks.
+ */
+
+#define HID_QUIRK_INVERT	0x01
+#define HID_QUIRK_NOTOUCH	0x02
+
+/*
+ * This is the global enviroment of the parser. This information is
+ * persistent for main-items. The global enviroment can be saved and
+ * restored with PUSH/POP statements.
+ */
+
+struct hid_global {
+	unsigned usage_page;
+	__s32    logical_minimum;
+	__s32    logical_maximum;
+	__s32    physical_minimum;
+	__s32    physical_maximum;
+	unsigned unit_exponent;
+	unsigned unit;
+	unsigned report_id;
+	unsigned report_size;
+	unsigned report_count;
+};
+
+/*
+ * This is the local enviroment. It is resistent up the the next main-item.
+ */
+
+#define HID_MAX_DESCRIPTOR_SIZE		4096
+#define HID_MAX_USAGES			1024
+
+struct hid_local {
+	unsigned usage[HID_MAX_USAGES]; /* usage array */
+	unsigned usage_index;
+	unsigned usage_minimum;
+	unsigned delimiter_depth;
+	unsigned delimiter_branch;
+};
+
+/*
+ * This is the collection stack. We climb up the stack to determine
+ * application and function of each field.
+ */
+
+struct hid_collection {
+	unsigned type;
+	unsigned usage;
+};
+
+struct hid_usage {
+	unsigned  hid;			/* hid usage code */
+	__u16     code;			/* input driver code */
+	__u8      type;			/* input driver type */
+	__u8	  hat;			/* hat switch fun */
+};
+
+struct hid_field {
+	unsigned  physical;		/* physical usage for this field */
+	unsigned  logical;		/* logical usage for this field */
+	struct hid_usage *usage;	/* usage table for this function */
+	unsigned  maxusage;		/* maximum usage index */
+	unsigned  flags;		/* main-item flags (i.e. volatile,array,constant) */
+	unsigned  report_offset;	/* bit offset in the report */
+	unsigned  report_size;		/* size of this field in the report */
+	unsigned  report_count;		/* number of this field in the report */
+	unsigned  report_type;		/* (input,output,feature) */
+	__s32    *value;		/* last known value(s) */
+	__s32     logical_minimum;
+	__s32     logical_maximum;
+	__s32     physical_minimum;
+	__s32     physical_maximum;
+	unsigned  unit_exponent;
+	unsigned  unit;
+	struct hid_report *report;	/* associated report */
+};
+
+#define HID_MAX_FIELDS 64
+
+struct hid_report {
+	struct list_head list;
+	unsigned id;					/* id of this report */
+	unsigned type;					/* report type */
+	struct hid_field *field[HID_MAX_FIELDS];	/* fields of the report */
+	unsigned maxfield;				/* maximum valid field index */
+	unsigned size;					/* size of the report (bits) */
+	struct hid_device *device;			/* associated device */
+};
+
+struct hid_report_enum {
+	unsigned numbered;
+	struct list_head report_list;
+	struct hid_report *report_id_hash[256];
+};
+
+#define HID_REPORT_TYPES 3
+
+#define HID_BUFFER_SIZE		32
+#define HID_CONTROL_FIFO_SIZE	8
+
+struct hid_control_fifo {
+	devrequest dr;
+	char buffer[HID_BUFFER_SIZE];
+};
+
+struct hid_device {							/* device report descriptor */
+	 __u8 *rdesc;
+	unsigned rsize;
+	unsigned application;						/* HID application, i.e. Digitizer */
+	unsigned version;						/* HID version */
+	unsigned country;						/* HID country */
+	struct hid_report_enum report_enum[HID_REPORT_TYPES];
+
+	struct usb_device *dev;						/* USB device */
+	int ifnum;							/* USB interface number */
+
+	struct urb urb;							/* USB URB structure */
+	char buffer[HID_BUFFER_SIZE];					/* Rx buffer */
+
+	struct urb urbout;						/* Output URB */
+	struct hid_control_fifo out[HID_CONTROL_FIFO_SIZE];		/* Transmit buffer */
+	unsigned char outhead, outtail;					/* Tx buffer head & tail */
+
+	struct input_dev input;						/* input device structure */
+	int open;							/* is the device open by input? */
+	int quirks;							/* Various nasty tricks the device can pull on us */
+	char name[128];							/* Device name */
+};
+
+#define HID_GLOBAL_STACK_SIZE 4
+#define HID_COLLECTION_STACK_SIZE 4
+
+struct hid_parser {
+	struct hid_global     global;
+	struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
+	unsigned              global_stack_ptr;
+	struct hid_local      local;
+	struct hid_collection collection_stack[HID_COLLECTION_STACK_SIZE];
+	unsigned              collection_stack_ptr;
+	struct hid_device    *device;
+};
+
+struct hid_class_descriptor {
+	__u8  bDescriptorType;
+	__u16 wDescriptorLength;
+} __attribute__ ((packed));
+
+struct hid_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+	__u16 bcdHID;
+	__u8  bCountryCode;
+	__u8  bNumDescriptors;
+
+	struct hid_class_descriptor desc[1];
+} __attribute__ ((packed));
+
+
+#endif
+