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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
42859e0b LL |
2 | /* |
3 | * Force feedback support for GreenAsia (Product ID 0x12) based devices | |
4 | * | |
5 | * The devices are distributed under various names and the same USB device ID | |
6 | * can be used in many game controllers. | |
7 | * | |
42859e0b LL |
8 | * 0e8f:0012 "GreenAsia Inc. USB Joystick " |
9 | * - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635. | |
10 | * | |
11 | * Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info> | |
12 | */ | |
13 | ||
14 | /* | |
42859e0b LL |
15 | */ |
16 | ||
17 | #include <linux/input.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
42859e0b | 19 | #include <linux/hid.h> |
8f86a2c3 | 20 | #include <linux/module.h> |
42859e0b | 21 | #include "hid-ids.h" |
0f6f4319 JK |
22 | |
23 | #ifdef CONFIG_GREENASIA_FF | |
42859e0b LL |
24 | |
25 | struct gaff_device { | |
26 | struct hid_report *report; | |
27 | }; | |
28 | ||
29 | static int hid_gaff_play(struct input_dev *dev, void *data, | |
30 | struct ff_effect *effect) | |
31 | { | |
32 | struct hid_device *hid = input_get_drvdata(dev); | |
33 | struct gaff_device *gaff = data; | |
34 | int left, right; | |
35 | ||
36 | left = effect->u.rumble.strong_magnitude; | |
37 | right = effect->u.rumble.weak_magnitude; | |
38 | ||
39 | dbg_hid("called with 0x%04x 0x%04x", left, right); | |
40 | ||
41 | left = left * 0xfe / 0xffff; | |
42 | right = right * 0xfe / 0xffff; | |
43 | ||
44 | gaff->report->field[0]->value[0] = 0x51; | |
45 | gaff->report->field[0]->value[1] = 0x0; | |
46 | gaff->report->field[0]->value[2] = right; | |
47 | gaff->report->field[0]->value[3] = 0; | |
48 | gaff->report->field[0]->value[4] = left; | |
49 | gaff->report->field[0]->value[5] = 0; | |
50 | dbg_hid("running with 0x%02x 0x%02x", left, right); | |
d8814272 | 51 | hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
42859e0b LL |
52 | |
53 | gaff->report->field[0]->value[0] = 0xfa; | |
54 | gaff->report->field[0]->value[1] = 0xfe; | |
55 | gaff->report->field[0]->value[2] = 0x0; | |
56 | gaff->report->field[0]->value[4] = 0x0; | |
57 | ||
d8814272 | 58 | hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
42859e0b LL |
59 | |
60 | return 0; | |
61 | } | |
62 | ||
63 | static int gaff_init(struct hid_device *hid) | |
64 | { | |
65 | struct gaff_device *gaff; | |
66 | struct hid_report *report; | |
d9d4b1e4 | 67 | struct hid_input *hidinput; |
42859e0b LL |
68 | struct list_head *report_list = |
69 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
70 | struct list_head *report_ptr = report_list; | |
d9d4b1e4 | 71 | struct input_dev *dev; |
42859e0b LL |
72 | int error; |
73 | ||
d9d4b1e4 AS |
74 | if (list_empty(&hid->inputs)) { |
75 | hid_err(hid, "no inputs found\n"); | |
76 | return -ENODEV; | |
77 | } | |
78 | hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
79 | dev = hidinput->input; | |
80 | ||
42859e0b | 81 | if (list_empty(report_list)) { |
4291ee30 | 82 | hid_err(hid, "no output reports found\n"); |
42859e0b LL |
83 | return -ENODEV; |
84 | } | |
85 | ||
86 | report_ptr = report_ptr->next; | |
87 | ||
88 | report = list_entry(report_ptr, struct hid_report, list); | |
89 | if (report->maxfield < 1) { | |
4291ee30 | 90 | hid_err(hid, "no fields in the report\n"); |
42859e0b LL |
91 | return -ENODEV; |
92 | } | |
93 | ||
94 | if (report->field[0]->report_count < 6) { | |
4291ee30 | 95 | hid_err(hid, "not enough values in the field\n"); |
42859e0b LL |
96 | return -ENODEV; |
97 | } | |
98 | ||
99 | gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL); | |
100 | if (!gaff) | |
101 | return -ENOMEM; | |
102 | ||
103 | set_bit(FF_RUMBLE, dev->ffbit); | |
104 | ||
105 | error = input_ff_create_memless(dev, gaff, hid_gaff_play); | |
106 | if (error) { | |
107 | kfree(gaff); | |
108 | return error; | |
109 | } | |
110 | ||
111 | gaff->report = report; | |
112 | gaff->report->field[0]->value[0] = 0x51; | |
113 | gaff->report->field[0]->value[1] = 0x00; | |
114 | gaff->report->field[0]->value[2] = 0x00; | |
115 | gaff->report->field[0]->value[3] = 0x00; | |
d8814272 | 116 | hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
42859e0b LL |
117 | |
118 | gaff->report->field[0]->value[0] = 0xfa; | |
119 | gaff->report->field[0]->value[1] = 0xfe; | |
120 | ||
d8814272 | 121 | hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
42859e0b | 122 | |
4291ee30 | 123 | hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n"); |
42859e0b LL |
124 | |
125 | return 0; | |
126 | } | |
0f6f4319 JK |
127 | #else |
128 | static inline int gaff_init(struct hid_device *hdev) | |
129 | { | |
130 | return 0; | |
131 | } | |
132 | #endif | |
42859e0b LL |
133 | |
134 | static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
135 | { | |
136 | int ret; | |
137 | ||
138 | dev_dbg(&hdev->dev, "Greenasia HID hardware probe..."); | |
139 | ||
140 | ret = hid_parse(hdev); | |
141 | if (ret) { | |
4291ee30 | 142 | hid_err(hdev, "parse failed\n"); |
42859e0b LL |
143 | goto err; |
144 | } | |
145 | ||
146 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
147 | if (ret) { | |
4291ee30 | 148 | hid_err(hdev, "hw start failed\n"); |
42859e0b LL |
149 | goto err; |
150 | } | |
151 | ||
152 | gaff_init(hdev); | |
153 | ||
154 | return 0; | |
155 | err: | |
156 | return ret; | |
157 | } | |
158 | ||
159 | static const struct hid_device_id ga_devices[] = { | |
160 | { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012), }, | |
161 | { } | |
162 | }; | |
163 | MODULE_DEVICE_TABLE(hid, ga_devices); | |
164 | ||
165 | static struct hid_driver ga_driver = { | |
166 | .name = "greenasia", | |
167 | .id_table = ga_devices, | |
168 | .probe = ga_probe, | |
169 | }; | |
f425458e | 170 | module_hid_driver(ga_driver); |
42859e0b | 171 | |
42859e0b | 172 | MODULE_LICENSE("GPL"); |