linux/drivers/hid/hid-cypress.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  HID driver for some cypress "special" devices
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
 *  Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
 *  Copyright (c) 2006-2007 Jiri Kosina
 *  Copyright (c) 2008 Jiri Slaby
 */

/*
 */

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
#include <linux/module.h>

#include "hid-ids.h"

#define CP_RDESC_SWAPPED_MIN_MAX …
#define CP_2WHEEL_MOUSE_HACK …
#define CP_2WHEEL_MOUSE_HACK_ON …

#define VA_INVAL_LOGICAL_BOUNDARY …

/*
 * Some USB barcode readers from cypress have usage min and usage max in
 * the wrong order
 */
static __u8 *cp_rdesc_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
{ … }

static __u8 *va_logical_boundary_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
{ … }

static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
{ … }

static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi,
		struct hid_field *field, struct hid_usage *usage,
		unsigned long **bit, int *max)
{ … }

static int cp_event(struct hid_device *hdev, struct hid_field *field,
		struct hid_usage *usage, __s32 value)
{ … }

static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id)
{ … }

static const struct hid_device_id cp_devices[] = …;
MODULE_DEVICE_TABLE(hid, cp_devices);

static struct hid_driver cp_driver = …;
module_hid_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;