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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * HID driver for some sunplus "special" devices4 *5 * Copyright (c) 1999 Andreas Gal6 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>7 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc8 * Copyright (c) 2006-2007 Jiri Kosina9 * Copyright (c) 2008 Jiri Slaby10 */11 12/*13 */14 15#include <linux/device.h>16#include <linux/hid.h>17#include <linux/module.h>18 19#include "hid-ids.h"20 21static const __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,22 unsigned int *rsize)23{24 if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&25 rdesc[106] == 0x03) {26 hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");27 rdesc[105] = rdesc[110] = 0x03;28 rdesc[106] = rdesc[111] = 0x21;29 }30 return rdesc;31}32 33#define sp_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \34 EV_KEY, (c))35static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi,36 struct hid_field *field, struct hid_usage *usage,37 unsigned long **bit, int *max)38{39 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)40 return 0;41 42 switch (usage->hid & HID_USAGE) {43 case 0x2003: sp_map_key_clear(KEY_ZOOMIN); break;44 case 0x2103: sp_map_key_clear(KEY_ZOOMOUT); break;45 default:46 return 0;47 }48 return 1;49}50 51static const struct hid_device_id sp_devices[] = {52 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },53 { }54};55MODULE_DEVICE_TABLE(hid, sp_devices);56 57static struct hid_driver sp_driver = {58 .name = "sunplus",59 .id_table = sp_devices,60 .report_fixup = sp_report_fixup,61 .input_mapping = sp_input_mapping,62};63module_hid_driver(sp_driver);64 65MODULE_DESCRIPTION("HID driver for some sunplus \"special\" devices");66MODULE_LICENSE("GPL");67