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 <mahasler@gmail.com>
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
30 struct mf_device {
31 struct hid_report *report;
32 };
33
mf_play(struct input_dev * dev,void * data,struct ff_effect * effect)34 static 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
mf_init(struct hid_device * hid)57 static int mf_init(struct hid_device *hid)
58 {
59 struct mf_device *mf;
60
61 struct list_head *report_list =
62 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
63
64 struct list_head *report_ptr;
65 struct hid_report *report;
66
67 struct list_head *input_ptr = &hid->inputs;
68 struct hid_input *input;
69
70 struct input_dev *dev;
71
72 int error;
73
74 /* Setup each of the four inputs */
75 list_for_each(report_ptr, report_list) {
76 report = list_entry(report_ptr, struct hid_report, list);
77
78 if (report->maxfield < 1 || report->field[0]->report_count < 2) {
79 hid_err(hid, "Invalid report, this should never happen!\n");
80 return -ENODEV;
81 }
82
83 if (list_is_last(input_ptr, &hid->inputs)) {
84 hid_err(hid, "Missing input, this should never happen!\n");
85 return -ENODEV;
86 }
87
88 input_ptr = input_ptr->next;
89 input = list_entry(input_ptr, struct hid_input, list);
90
91 mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL);
92 if (!mf)
93 return -ENOMEM;
94
95 dev = input->input;
96 set_bit(FF_RUMBLE, dev->ffbit);
97
98 error = input_ff_create_memless(dev, mf, mf_play);
99 if (error) {
100 kfree(mf);
101 return error;
102 }
103
104 mf->report = report;
105 mf->report->field[0]->value[0] = 0x00;
106 mf->report->field[0]->value[1] = 0x00;
107 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
108 }
109
110 hid_info(hid, "Force feedback for HJZ Mayflash game controller "
111 "adapters by Marcel Hasler <mahasler@gmail.com>\n");
112
113 return 0;
114 }
115
mf_probe(struct hid_device * hid,const struct hid_device_id * id)116 static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)
117 {
118 int error;
119
120 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");
121
122 /* Apply quirks as needed */
123 hid->quirks |= id->driver_data;
124
125 error = hid_parse(hid);
126 if (error) {
127 hid_err(hid, "HID parse failed.\n");
128 return error;
129 }
130
131 error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
132 if (error) {
133 hid_err(hid, "HID hw start failed\n");
134 return error;
135 }
136
137 error = mf_init(hid);
138 if (error) {
139 hid_err(hid, "Force feedback init failed.\n");
140 hid_hw_stop(hid);
141 return error;
142 }
143
144 return 0;
145 }
146
147 static const struct hid_device_id mf_devices[] = {
148 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3),
149 .driver_data = HID_QUIRK_MULTI_INPUT },
150 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR),
151 .driver_data = HID_QUIRK_MULTI_INPUT },
152 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1),
153 .driver_data = HID_QUIRK_MULTI_INPUT },
154 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2),
155 .driver_data = 0 }, /* No quirk required */
156 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE3),
157 .driver_data = HID_QUIRK_MULTI_INPUT },
158 { }
159 };
160 MODULE_DEVICE_TABLE(hid, mf_devices);
161
162 static struct hid_driver mf_driver = {
163 .name = "hid_mf",
164 .id_table = mf_devices,
165 .probe = mf_probe,
166 };
167 module_hid_driver(mf_driver);
168
169 MODULE_LICENSE("GPL");
170