1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Force feedback support for Betop based devices |
4 | * |
5 | * The devices are distributed under various names and the same USB device ID |
6 | * can be used in both adapters and actual game controllers. |
7 | * |
8 | * 0x11c2:0x2208 "BTP2185 BFM mode Joystick" |
9 | * - tested with BTP2185 BFM Mode. |
10 | * |
11 | * 0x11C0:0x5506 "BTP2185 PC mode Joystick" |
12 | * - tested with BTP2185 PC Mode. |
13 | * |
14 | * 0x8380:0x1850 "BTP2185 V2 PC mode USB Gamepad" |
15 | * - tested with BTP2185 PC Mode with another version. |
16 | * |
17 | * 0x20bc:0x5500 "BTP2185 V2 BFM mode Joystick" |
18 | * - tested with BTP2171s. |
19 | * Copyright (c) 2014 Huang Bo <huangbobupt@163.com> |
20 | */ |
21 | |
22 | /* |
23 | */ |
24 | |
25 | |
26 | #include <linux/input.h> |
27 | #include <linux/slab.h> |
28 | #include <linux/module.h> |
29 | #include <linux/hid.h> |
30 | |
31 | #include "hid-ids.h" |
32 | |
33 | struct betopff_device { |
34 | struct hid_report *report; |
35 | }; |
36 | |
37 | static int hid_betopff_play(struct input_dev *dev, void *data, |
38 | struct ff_effect *effect) |
39 | { |
40 | struct hid_device *hid = input_get_drvdata(dev); |
41 | struct betopff_device *betopff = data; |
42 | __u16 left, right; |
43 | |
44 | left = effect->u.rumble.strong_magnitude; |
45 | right = effect->u.rumble.weak_magnitude; |
46 | |
47 | betopff->report->field[2]->value[0] = left / 256; |
48 | betopff->report->field[3]->value[0] = right / 256; |
49 | |
50 | hid_hw_request(hdev: hid, report: betopff->report, reqtype: HID_REQ_SET_REPORT); |
51 | |
52 | return 0; |
53 | } |
54 | |
55 | static int betopff_init(struct hid_device *hid) |
56 | { |
57 | struct betopff_device *betopff; |
58 | struct hid_report *report; |
59 | struct hid_input *hidinput; |
60 | struct list_head *report_list = |
61 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
62 | struct input_dev *dev; |
63 | int error; |
64 | int i, j; |
65 | |
66 | if (list_empty(head: &hid->inputs)) { |
67 | hid_err(hid, "no inputs found\n" ); |
68 | return -ENODEV; |
69 | } |
70 | |
71 | hidinput = list_first_entry(&hid->inputs, struct hid_input, list); |
72 | dev = hidinput->input; |
73 | |
74 | if (list_empty(head: report_list)) { |
75 | hid_err(hid, "no output reports found\n" ); |
76 | return -ENODEV; |
77 | } |
78 | |
79 | report = list_first_entry(report_list, struct hid_report, list); |
80 | /* |
81 | * Actually there are 4 fields for 4 Bytes as below: |
82 | * ----------------------------------------- |
83 | * Byte0 Byte1 Byte2 Byte3 |
84 | * 0x00 0x00 left_motor right_motor |
85 | * ----------------------------------------- |
86 | * Do init them with default value. |
87 | */ |
88 | if (report->maxfield < 4) { |
89 | hid_err(hid, "not enough fields in the report: %d\n" , |
90 | report->maxfield); |
91 | return -ENODEV; |
92 | } |
93 | for (i = 0; i < report->maxfield; i++) { |
94 | if (report->field[i]->report_count < 1) { |
95 | hid_err(hid, "no values in the field\n" ); |
96 | return -ENODEV; |
97 | } |
98 | for (j = 0; j < report->field[i]->report_count; j++) { |
99 | report->field[i]->value[j] = 0x00; |
100 | } |
101 | } |
102 | |
103 | betopff = kzalloc(size: sizeof(*betopff), GFP_KERNEL); |
104 | if (!betopff) |
105 | return -ENOMEM; |
106 | |
107 | set_bit(FF_RUMBLE, addr: dev->ffbit); |
108 | |
109 | error = input_ff_create_memless(dev, data: betopff, play_effect: hid_betopff_play); |
110 | if (error) { |
111 | kfree(objp: betopff); |
112 | return error; |
113 | } |
114 | |
115 | betopff->report = report; |
116 | hid_hw_request(hdev: hid, report: betopff->report, reqtype: HID_REQ_SET_REPORT); |
117 | |
118 | hid_info(hid, "Force feedback for betop devices by huangbo <huangbobupt@163.com>\n" ); |
119 | |
120 | return 0; |
121 | } |
122 | |
123 | static int betop_probe(struct hid_device *hdev, const struct hid_device_id *id) |
124 | { |
125 | int ret; |
126 | |
127 | if (id->driver_data) |
128 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; |
129 | |
130 | ret = hid_parse(hdev); |
131 | if (ret) { |
132 | hid_err(hdev, "parse failed\n" ); |
133 | goto err; |
134 | } |
135 | |
136 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
137 | if (ret) { |
138 | hid_err(hdev, "hw start failed\n" ); |
139 | goto err; |
140 | } |
141 | |
142 | betopff_init(hid: hdev); |
143 | |
144 | return 0; |
145 | err: |
146 | return ret; |
147 | } |
148 | |
149 | static const struct hid_device_id betop_devices[] = { |
150 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) }, |
151 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) }, |
152 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) }, |
153 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) }, |
154 | { } |
155 | }; |
156 | MODULE_DEVICE_TABLE(hid, betop_devices); |
157 | |
158 | static struct hid_driver betop_driver = { |
159 | .name = "betop" , |
160 | .id_table = betop_devices, |
161 | .probe = betop_probe, |
162 | }; |
163 | module_hid_driver(betop_driver); |
164 | |
165 | MODULE_LICENSE("GPL" ); |
166 | |