cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hid-sunplus.c (1689B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  HID driver for some sunplus "special" devices
      4 *
      5 *  Copyright (c) 1999 Andreas Gal
      6 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
      7 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
      8 *  Copyright (c) 2006-2007 Jiri Kosina
      9 *  Copyright (c) 2008 Jiri Slaby
     10 */
     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 __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_LICENSE("GPL");