include/usb_hid_touchpad.h

/* Copyright 2016 The ChromiumOS Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 *
 * USB HID definitions.
 */

#ifndef __CROS_EC_USB_HID_TOUCHPAD_H
#define __CROS_EC_USB_HID_TOUCHPAD_H

#include "common.h"

#define USB_HID_TOUCHPAD_TIMESTAMP_UNIT 100 /* usec */

#define REPORT_ID_TOUCHPAD 0x01
#define REPORT_ID_DEVICE_CAPS 0x0A
#define REPORT_ID_DEVICE_CERT 0x0B

#define MAX_FINGERS 5

struct usb_hid_touchpad_report {
	uint8_t id; /* 0x01 */
	struct {
		uint16_t confidence : 1;
		uint16_t tip : 1;
		uint16_t inrange : 1;
		uint16_t id : 4;
		uint16_t pressure : 9;
		uint16_t width : 12;
		uint16_t height : 12;
		uint16_t x : 12;
		uint16_t y : 12;
	} __packed finger[MAX_FINGERS];
	uint8_t count : 7;
	uint8_t button : 1;
	uint16_t timestamp;
} __packed;

/* class implementation interfaces */
void set_touchpad_report(struct usb_hid_touchpad_report *report);

#endif