Merge tag '6.7-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
[linux-2.6-microblaze.git] / drivers / hid / hid-betopff.c
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(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         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(&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(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(sizeof(*betopff), GFP_KERNEL);
104         if (!betopff)
105                 return -ENOMEM;
106
107         set_bit(FF_RUMBLE, dev->ffbit);
108
109         error = input_ff_create_memless(dev, betopff, hid_betopff_play);
110         if (error) {
111                 kfree(betopff);
112                 return error;
113         }
114
115         betopff->report = report;
116         hid_hw_request(hid, betopff->report, 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(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");