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1 | /* |
2 | * Force feedback support for GreenAsia (Product ID 0x12) based devices |
3 | * |
4 | * The devices are distributed under various names and the same USB device ID |
5 | * can be used in many game controllers. |
6 | * |
7 | * |
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 | /* |
15 | * This program is free software; you can redistribute it and/or modify |
16 | * it under the terms of the GNU General Public License as published by |
17 | * the Free Software Foundation; either version 2 of the License, or |
18 | * (at your option) any later version. |
19 | * |
20 | * This program is distributed in the hope that it will be useful, |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | * GNU General Public License for more details. |
24 | * |
25 | * You should have received a copy of the GNU General Public License |
26 | * along with this program; if not, write to the Free Software |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
28 | */ |
29 | |
30 | #include <linux/input.h> |
31 | #include <linux/slab.h> |
32 | #include <linux/usb.h> |
33 | #include <linux/hid.h> |
34 | #include <linux/module.h> |
35 | #include "hid-ids.h" |
36 | |
37 | #ifdef CONFIG_GREENASIA_FF |
38 | #include "usbhid/usbhid.h" |
39 | |
40 | struct gaff_device { |
41 | struct hid_report *report; |
42 | }; |
43 | |
44 | static int hid_gaff_play(struct input_dev *dev, void *data, |
45 | struct ff_effect *effect) |
46 | { |
47 | struct hid_device *hid = input_get_drvdata(dev); |
48 | struct gaff_device *gaff = data; |
49 | int left, right; |
50 | |
51 | left = effect->u.rumble.strong_magnitude; |
52 | right = effect->u.rumble.weak_magnitude; |
53 | |
54 | dbg_hid("called with 0x%04x 0x%04x", left, right); |
55 | |
56 | left = left * 0xfe / 0xffff; |
57 | right = right * 0xfe / 0xffff; |
58 | |
59 | gaff->report->field[0]->value[0] = 0x51; |
60 | gaff->report->field[0]->value[1] = 0x0; |
61 | gaff->report->field[0]->value[2] = right; |
62 | gaff->report->field[0]->value[3] = 0; |
63 | gaff->report->field[0]->value[4] = left; |
64 | gaff->report->field[0]->value[5] = 0; |
65 | dbg_hid("running with 0x%02x 0x%02x", left, right); |
66 | usbhid_submit_report(hid, gaff->report, USB_DIR_OUT); |
67 | |
68 | gaff->report->field[0]->value[0] = 0xfa; |
69 | gaff->report->field[0]->value[1] = 0xfe; |
70 | gaff->report->field[0]->value[2] = 0x0; |
71 | gaff->report->field[0]->value[4] = 0x0; |
72 | |
73 | usbhid_submit_report(hid, gaff->report, USB_DIR_OUT); |
74 | |
75 | return 0; |
76 | } |
77 | |
78 | static int gaff_init(struct hid_device *hid) |
79 | { |
80 | struct gaff_device *gaff; |
81 | struct hid_report *report; |
82 | struct hid_input *hidinput = list_entry(hid->inputs.next, |
83 | struct hid_input, list); |
84 | struct list_head *report_list = |
85 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
86 | struct list_head *report_ptr = report_list; |
87 | struct input_dev *dev = hidinput->input; |
88 | int error; |
89 | |
90 | if (list_empty(report_list)) { |
91 | hid_err(hid, "no output reports found\n"); |
92 | return -ENODEV; |
93 | } |
94 | |
95 | report_ptr = report_ptr->next; |
96 | |
97 | report = list_entry(report_ptr, struct hid_report, list); |
98 | if (report->maxfield < 1) { |
99 | hid_err(hid, "no fields in the report\n"); |
100 | return -ENODEV; |
101 | } |
102 | |
103 | if (report->field[0]->report_count < 6) { |
104 | hid_err(hid, "not enough values in the field\n"); |
105 | return -ENODEV; |
106 | } |
107 | |
108 | gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL); |
109 | if (!gaff) |
110 | return -ENOMEM; |
111 | |
112 | set_bit(FF_RUMBLE, dev->ffbit); |
113 | |
114 | error = input_ff_create_memless(dev, gaff, hid_gaff_play); |
115 | if (error) { |
116 | kfree(gaff); |
117 | return error; |
118 | } |
119 | |
120 | gaff->report = report; |
121 | gaff->report->field[0]->value[0] = 0x51; |
122 | gaff->report->field[0]->value[1] = 0x00; |
123 | gaff->report->field[0]->value[2] = 0x00; |
124 | gaff->report->field[0]->value[3] = 0x00; |
125 | usbhid_submit_report(hid, gaff->report, USB_DIR_OUT); |
126 | |
127 | gaff->report->field[0]->value[0] = 0xfa; |
128 | gaff->report->field[0]->value[1] = 0xfe; |
129 | |
130 | usbhid_submit_report(hid, gaff->report, USB_DIR_OUT); |
131 | |
132 | hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n"); |
133 | |
134 | return 0; |
135 | } |
136 | #else |
137 | static inline int gaff_init(struct hid_device *hdev) |
138 | { |
139 | return 0; |
140 | } |
141 | #endif |
142 | |
143 | static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id) |
144 | { |
145 | int ret; |
146 | |
147 | dev_dbg(&hdev->dev, "Greenasia HID hardware probe..."); |
148 | |
149 | ret = hid_parse(hdev); |
150 | if (ret) { |
151 | hid_err(hdev, "parse failed\n"); |
152 | goto err; |
153 | } |
154 | |
155 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
156 | if (ret) { |
157 | hid_err(hdev, "hw start failed\n"); |
158 | goto err; |
159 | } |
160 | |
161 | gaff_init(hdev); |
162 | |
163 | return 0; |
164 | err: |
165 | return ret; |
166 | } |
167 | |
168 | static const struct hid_device_id ga_devices[] = { |
169 | { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012), }, |
170 | { } |
171 | }; |
172 | MODULE_DEVICE_TABLE(hid, ga_devices); |
173 | |
174 | static struct hid_driver ga_driver = { |
175 | .name = "greenasia", |
176 | .id_table = ga_devices, |
177 | .probe = ga_probe, |
178 | }; |
179 | |
180 | static int __init ga_init(void) |
181 | { |
182 | return hid_register_driver(&ga_driver); |
183 | } |
184 | |
185 | static void __exit ga_exit(void) |
186 | { |
187 | hid_unregister_driver(&ga_driver); |
188 | } |
189 | |
190 | module_init(ga_init); |
191 | module_exit(ga_exit); |
192 | MODULE_LICENSE("GPL"); |
193 |
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