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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Force feedback support for Mayflash game controller adapters.
4 *
5 * These devices are manufactured by Mayflash but identify themselves
6 * using the vendor ID of DragonRise Inc.
7 *
8 * Tested with:
9 * 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter"
10 * 0079:1803 "DragonRise Inc. Mayflash Wireless Sensor DolphinBar"
11 * 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter"
12 * 0079:1844 "DragonRise Inc. Mayflash GameCube Game Controller Adapter (v04)"
13 *
14 * The following adapters probably work too, but need to be tested:
15 * 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter"
16 *
17 * Copyright (c) 2016-2017 Marcel Hasler <[email protected]>
18 */
19
20/*
21 */
22
23#include <linux/input.h>
24#include <linux/slab.h>
25#include <linux/hid.h>
26#include <linux/module.h>
27
28#include "hid-ids.h"
29
30struct mf_device {
31 struct hid_report *report;
32};
33
34static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect)
35{
36 struct hid_device *hid = input_get_drvdata(dev);
37 struct mf_device *mf = data;
38 int strong, weak;
39
40 strong = effect->u.rumble.strong_magnitude;
41 weak = effect->u.rumble.weak_magnitude;
42
43 dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak);
44
45 strong = strong * 0xff / 0xffff;
46 weak = weak * 0xff / 0xffff;
47
48 dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak);
49
50 mf->report->field[0]->value[0] = weak;
51 mf->report->field[0]->value[1] = strong;
52 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
53
54 return 0;
55}
56
57static int mf_input_configured(struct hid_device *hid, struct hid_input *hidinput)
58{
59 struct mf_device *mf;
60 struct list_head *report_list =
61 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
62 struct hid_report *report;
63 struct input_dev *dev = hidinput->input;
64 int error;
65
66 if (!list_is_first(&hidinput->list, &hid->inputs))
67 return 0;
68
69 report = list_first_entry_or_null(report_list, struct hid_report, list);
70 if (!report) {
71 hid_err(hid, "no output reports found\n");
72 return -ENODEV;
73 }
74
75 if (report->maxfield < 1 || report->field[0]->report_count < 2) {
76 hid_err(hid, "Invalid report, this should never happen!\n");
77 return -ENODEV;
78 }
79
80 mf = kzalloc_obj(struct mf_device);
81 if (!mf)
82 return -ENOMEM;
83
84 mf->report = report;
85 set_bit(FF_RUMBLE, dev->ffbit);
86
87 error = input_ff_create_memless(dev, mf, mf_play);
88 if (error) {
89 kfree(mf);
90 return error;
91 }
92
93 mf->report->field[0]->value[0] = 0x00;
94 mf->report->field[0]->value[1] = 0x00;
95 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
96
97 return 0;
98}
99
100static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)
101{
102 int error;
103
104 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");
105
106 /* Apply quirks as needed */
107 hid->quirks |= id->driver_data;
108
109 error = hid_parse(hid);
110 if (error) {
111 hid_err(hid, "HID parse failed.\n");
112 return error;
113 }
114
115 error = hid_hw_start(hid, HID_CONNECT_DEFAULT);
116 if (error) {
117 hid_err(hid, "HID hw start failed\n");
118 return error;
119 }
120
121 return 0;
122}
123static const struct hid_device_id mf_devices[] = {
124 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3),
125 .driver_data = HID_QUIRK_MULTI_INPUT },
126 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR),
127 .driver_data = HID_QUIRK_MULTI_INPUT },
128 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1),
129 .driver_data = HID_QUIRK_MULTI_INPUT },
130 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2),
131 .driver_data = 0 }, /* No quirk required */
132 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE3),
133 .driver_data = HID_QUIRK_MULTI_INPUT },
134 { }
135};
136MODULE_DEVICE_TABLE(hid, mf_devices);
137
138static struct hid_driver mf_driver = {
139 .name = "hid_mf",
140 .id_table = mf_devices,
141 .probe = mf_probe,
142 .input_configured = mf_input_configured,
143};
144module_hid_driver(mf_driver);
145
146MODULE_DESCRIPTION("Force feedback support for Mayflash game controller adapters.");
147MODULE_LICENSE("GPL");