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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
52cd7785 JK |
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 | /* | |
52cd7785 JK |
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(hid, betopff->report, 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 | list_first_entry(&hid->inputs, struct hid_input, list); | |
61 | struct list_head *report_list = | |
62 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
63 | struct input_dev *dev = hidinput->input; | |
64 | int field_count = 0; | |
65 | int error; | |
66 | int i, j; | |
67 | ||
68 | if (list_empty(report_list)) { | |
69 | hid_err(hid, "no output reports found\n"); | |
70 | return -ENODEV; | |
71 | } | |
72 | ||
73 | report = list_first_entry(report_list, struct hid_report, list); | |
74 | /* | |
75 | * Actually there are 4 fields for 4 Bytes as below: | |
76 | * ----------------------------------------- | |
77 | * Byte0 Byte1 Byte2 Byte3 | |
78 | * 0x00 0x00 left_motor right_motor | |
79 | * ----------------------------------------- | |
80 | * Do init them with default value. | |
81 | */ | |
82 | for (i = 0; i < report->maxfield; i++) { | |
83 | for (j = 0; j < report->field[i]->report_count; j++) { | |
84 | report->field[i]->value[j] = 0x00; | |
85 | field_count++; | |
86 | } | |
87 | } | |
88 | ||
89 | if (field_count < 4) { | |
90 | hid_err(hid, "not enough fields in the report: %d\n", | |
91 | field_count); | |
92 | return -ENODEV; | |
93 | } | |
94 | ||
95 | betopff = kzalloc(sizeof(*betopff), GFP_KERNEL); | |
96 | if (!betopff) | |
97 | return -ENOMEM; | |
98 | ||
99 | set_bit(FF_RUMBLE, dev->ffbit); | |
100 | ||
101 | error = input_ff_create_memless(dev, betopff, hid_betopff_play); | |
102 | if (error) { | |
103 | kfree(betopff); | |
104 | return error; | |
105 | } | |
106 | ||
107 | betopff->report = report; | |
108 | hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT); | |
109 | ||
110 | hid_info(hid, "Force feedback for betop devices by huangbo <huangbobupt@163.com>\n"); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | static int betop_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
116 | { | |
117 | int ret; | |
118 | ||
119 | if (id->driver_data) | |
120 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; | |
121 | ||
122 | ret = hid_parse(hdev); | |
123 | if (ret) { | |
124 | hid_err(hdev, "parse failed\n"); | |
125 | goto err; | |
126 | } | |
127 | ||
128 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
129 | if (ret) { | |
130 | hid_err(hdev, "hw start failed\n"); | |
131 | goto err; | |
132 | } | |
133 | ||
134 | betopff_init(hdev); | |
135 | ||
136 | return 0; | |
137 | err: | |
138 | return ret; | |
139 | } | |
140 | ||
141 | static const struct hid_device_id betop_devices[] = { | |
142 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) }, | |
143 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) }, | |
144 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) }, | |
145 | { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) }, | |
146 | { } | |
147 | }; | |
148 | MODULE_DEVICE_TABLE(hid, betop_devices); | |
149 | ||
150 | static struct hid_driver betop_driver = { | |
151 | .name = "betop", | |
152 | .id_table = betop_devices, | |
153 | .probe = betop_probe, | |
154 | }; | |
155 | module_hid_driver(betop_driver); | |
156 | ||
157 | MODULE_LICENSE("GPL"); |