1/*
2 * Force feedback support for Mayflash game controller adapters.
3 *
4 * These devices are manufactured by Mayflash but identify themselves
5 * using the vendor ID of DragonRise Inc.
6 *
7 * Tested with:
8 * 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter"
9 * 0079:1803 "DragonRise Inc. Mayflash Wireless Sensor DolphinBar"
10 * 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter"
11 * 0079:1844 "DragonRise Inc. Mayflash GameCube Game Controller Adapter (v04)"
12 *
13 * The following adapters probably work too, but need to be tested:
14 * 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter"
15 *
16 * Copyright (c) 2016-2017 Marcel Hasler <mahasler@gmail.com>
17 */
18
19/*
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 */
30
31#include <linux/input.h>
32#include <linux/slab.h>
33#include <linux/hid.h>
34#include <linux/module.h>
35
36#include "hid-ids.h"
37
38struct mf_device {
39 struct hid_report *report;
40};
41
42static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect)
43{
44 struct hid_device *hid = input_get_drvdata(dev);
45 struct mf_device *mf = data;
46 int strong, weak;
47
48 strong = effect->u.rumble.strong_magnitude;
49 weak = effect->u.rumble.weak_magnitude;
50
51 dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak);
52
53 strong = strong * 0xff / 0xffff;
54 weak = weak * 0xff / 0xffff;
55
56 dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak);
57
58 mf->report->field[0]->value[0] = weak;
59 mf->report->field[0]->value[1] = strong;
60 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
61
62 return 0;
63}
64
65static int mf_init(struct hid_device *hid)
66{
67 struct mf_device *mf;
68
69 struct list_head *report_list =
70 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
71
72 struct list_head *report_ptr;
73 struct hid_report *report;
74
75 struct list_head *input_ptr = &hid->inputs;
76 struct hid_input *input;
77
78 struct input_dev *dev;
79
80 int error;
81
82 /* Setup each of the four inputs */
83 list_for_each(report_ptr, report_list) {
84 report = list_entry(report_ptr, struct hid_report, list);
85
86 if (report->maxfield < 1 || report->field[0]->report_count < 2) {
87 hid_err(hid, "Invalid report, this should never happen!\n");
88 return -ENODEV;
89 }
90
91 if (list_is_last(input_ptr, &hid->inputs)) {
92 hid_err(hid, "Missing input, this should never happen!\n");
93 return -ENODEV;
94 }
95
96 input_ptr = input_ptr->next;
97 input = list_entry(input_ptr, struct hid_input, list);
98
99 mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL);
100 if (!mf)
101 return -ENOMEM;
102
103 dev = input->input;
104 set_bit(FF_RUMBLE, dev->ffbit);
105
106 error = input_ff_create_memless(dev, mf, mf_play);
107 if (error) {
108 kfree(mf);
109 return error;
110 }
111
112 mf->report = report;
113 mf->report->field[0]->value[0] = 0x00;
114 mf->report->field[0]->value[1] = 0x00;
115 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
116 }
117
118 hid_info(hid, "Force feedback for HJZ Mayflash game controller "
119 "adapters by Marcel Hasler <mahasler@gmail.com>\n");
120
121 return 0;
122}
123
124static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)
125{
126 int error;
127
128 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");
129
130 /* Apply quirks as needed */
131 hid->quirks |= id->driver_data;
132
133 error = hid_parse(hid);
134 if (error) {
135 hid_err(hid, "HID parse failed.\n");
136 return error;
137 }
138
139 error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
140 if (error) {
141 hid_err(hid, "HID hw start failed\n");
142 return error;
143 }
144
145 error = mf_init(hid);
146 if (error) {
147 hid_err(hid, "Force feedback init failed.\n");
148 hid_hw_stop(hid);
149 return error;
150 }
151
152 return 0;
153}
154
155static const struct hid_device_id mf_devices[] = {
156 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3),
157 .driver_data = HID_QUIRK_MULTI_INPUT },
158 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR),
159 .driver_data = HID_QUIRK_MULTI_INPUT },
160 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1),
161 .driver_data = HID_QUIRK_MULTI_INPUT },
162 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2),
163 .driver_data = 0 }, /* No quirk required */
164 { }
165};
166MODULE_DEVICE_TABLE(hid, mf_devices);
167
168static struct hid_driver mf_driver = {
169 .name = "hid_mf",
170 .id_table = mf_devices,
171 .probe = mf_probe,
172};
173module_hid_driver(mf_driver);
174
175MODULE_LICENSE("GPL");
176