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-sjoy.c (4479B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  Force feedback support for SmartJoy PLUS PS2->USB adapter
      4 *
      5 *  Copyright (c) 2009 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
      6 *
      7 *  Based of hid-pl.c and hid-gaff.c
      8 *   Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
      9 *   Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
     10 */
     11
     12/*
     13 */
     14
     15/* #define DEBUG */
     16
     17#include <linux/input.h>
     18#include <linux/slab.h>
     19#include <linux/hid.h>
     20#include <linux/module.h>
     21#include "hid-ids.h"
     22
     23#ifdef CONFIG_SMARTJOYPLUS_FF
     24
     25struct sjoyff_device {
     26	struct hid_report *report;
     27};
     28
     29static int hid_sjoyff_play(struct input_dev *dev, void *data,
     30			 struct ff_effect *effect)
     31{
     32	struct hid_device *hid = input_get_drvdata(dev);
     33	struct sjoyff_device *sjoyff = data;
     34	u32 left, right;
     35
     36	left = effect->u.rumble.strong_magnitude;
     37	right = effect->u.rumble.weak_magnitude;
     38	dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right);
     39
     40	left = left * 0xff / 0xffff;
     41	right = (right != 0); /* on/off only */
     42
     43	sjoyff->report->field[0]->value[1] = right;
     44	sjoyff->report->field[0]->value[2] = left;
     45	dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right);
     46	hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
     47
     48	return 0;
     49}
     50
     51static int sjoyff_init(struct hid_device *hid)
     52{
     53	struct sjoyff_device *sjoyff;
     54	struct hid_report *report;
     55	struct hid_input *hidinput;
     56	struct list_head *report_list =
     57			&hid->report_enum[HID_OUTPUT_REPORT].report_list;
     58	struct list_head *report_ptr = report_list;
     59	struct input_dev *dev;
     60	int error;
     61
     62	if (list_empty(report_list)) {
     63		hid_err(hid, "no output reports found\n");
     64		return -ENODEV;
     65	}
     66
     67	list_for_each_entry(hidinput, &hid->inputs, list) {
     68		report_ptr = report_ptr->next;
     69
     70		if (report_ptr == report_list) {
     71			hid_err(hid, "required output report is missing\n");
     72			return -ENODEV;
     73		}
     74
     75		report = list_entry(report_ptr, struct hid_report, list);
     76		if (report->maxfield < 1) {
     77			hid_err(hid, "no fields in the report\n");
     78			return -ENODEV;
     79		}
     80
     81		if (report->field[0]->report_count < 3) {
     82			hid_err(hid, "not enough values in the field\n");
     83			return -ENODEV;
     84		}
     85
     86		sjoyff = kzalloc(sizeof(struct sjoyff_device), GFP_KERNEL);
     87		if (!sjoyff)
     88			return -ENOMEM;
     89
     90		dev = hidinput->input;
     91
     92		set_bit(FF_RUMBLE, dev->ffbit);
     93
     94		error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play);
     95		if (error) {
     96			kfree(sjoyff);
     97			return error;
     98		}
     99
    100		sjoyff->report = report;
    101		sjoyff->report->field[0]->value[0] = 0x01;
    102		sjoyff->report->field[0]->value[1] = 0x00;
    103		sjoyff->report->field[0]->value[2] = 0x00;
    104		hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT);
    105	}
    106
    107	hid_info(hid, "Force feedback for SmartJoy PLUS PS2/USB adapter\n");
    108
    109	return 0;
    110}
    111#else
    112static inline int sjoyff_init(struct hid_device *hid)
    113{
    114	return 0;
    115}
    116#endif
    117
    118static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id)
    119{
    120	int ret;
    121
    122	hdev->quirks |= id->driver_data;
    123
    124	ret = hid_parse(hdev);
    125	if (ret) {
    126		hid_err(hdev, "parse failed\n");
    127		goto err;
    128	}
    129
    130	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
    131	if (ret) {
    132		hid_err(hdev, "hw start failed\n");
    133		goto err;
    134	}
    135
    136	sjoyff_init(hdev);
    137
    138	return 0;
    139err:
    140	return ret;
    141}
    142
    143static const struct hid_device_id sjoy_devices[] = {
    144	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO),
    145		.driver_data = HID_QUIRK_NOGET },
    146	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO),
    147		.driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
    148			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
    149	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO),
    150		.driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
    151			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
    152	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
    153	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
    154	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD),
    155		.driver_data = HID_QUIRK_MULTI_INPUT |
    156			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
    157	{ HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII),
    158		.driver_data = HID_QUIRK_MULTI_INPUT |
    159			       HID_QUIRK_SKIP_OUTPUT_REPORTS },
    160	{ }
    161};
    162MODULE_DEVICE_TABLE(hid, sjoy_devices);
    163
    164static struct hid_driver sjoy_driver = {
    165	.name = "smartjoyplus",
    166	.id_table = sjoy_devices,
    167	.probe = sjoy_probe,
    168};
    169module_hid_driver(sjoy_driver);
    170
    171MODULE_LICENSE("GPL");
    172MODULE_AUTHOR("Jussi Kivilinna");
    173