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3f866fbd RW |
1 | /* |
2 | * Force feedback support for DragonRise Inc. game controllers | |
3 | * | |
4 | * From what I have gathered, these devices are mass produced in China and are | |
5 | * distributed under several vendors. They often share the same design as | |
6 | * the original PlayStation DualShock controller. | |
7 | * | |
8 | * 0079:0006 "DragonRise Inc. Generic USB Joystick " | |
9 | * - tested with a Tesun USB-703 game controller. | |
10 | * | |
11 | * Copyright (c) 2009 Richard Walmsley <richwalm@gmail.com> | |
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/usb.h> | |
32 | #include <linux/hid.h> | |
33 | ||
34 | #include "hid-ids.h" | |
35 | #include "usbhid/usbhid.h" | |
36 | ||
37 | struct drff_device { | |
38 | struct hid_report *report; | |
39 | }; | |
40 | ||
41 | static int drff_play(struct input_dev *dev, void *data, | |
42 | struct ff_effect *effect) | |
43 | { | |
44 | struct hid_device *hid = input_get_drvdata(dev); | |
45 | struct drff_device *drff = data; | |
46 | int strong, weak; | |
47 | ||
48 | strong = effect->u.rumble.strong_magnitude; | |
49 | weak = effect->u.rumble.weak_magnitude; | |
50 | ||
51 | dbg_hid("called with 0x%04x 0x%04x", strong, weak); | |
52 | ||
53 | if (strong || weak) { | |
54 | strong = strong * 0xff / 0xffff; | |
55 | weak = weak * 0xff / 0xffff; | |
56 | ||
57 | /* While reverse engineering this device, I found that when | |
58 | this value is set, it causes the strong rumble to function | |
59 | at a near maximum speed, so we'll bypass it. */ | |
60 | if (weak == 0x0a) | |
61 | weak = 0x0b; | |
62 | ||
63 | drff->report->field[0]->value[0] = 0x51; | |
64 | drff->report->field[0]->value[1] = 0x00; | |
65 | drff->report->field[0]->value[2] = weak; | |
66 | drff->report->field[0]->value[4] = strong; | |
67 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
68 | ||
69 | drff->report->field[0]->value[0] = 0xfa; | |
70 | drff->report->field[0]->value[1] = 0xfe; | |
71 | } else { | |
72 | drff->report->field[0]->value[0] = 0xf3; | |
73 | drff->report->field[0]->value[1] = 0x00; | |
74 | } | |
75 | ||
76 | drff->report->field[0]->value[2] = 0x00; | |
77 | drff->report->field[0]->value[4] = 0x00; | |
78 | dbg_hid("running with 0x%02x 0x%02x", strong, weak); | |
79 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
84 | static int drff_init(struct hid_device *hid) | |
85 | { | |
86 | struct drff_device *drff; | |
87 | struct hid_report *report; | |
88 | struct hid_input *hidinput = list_first_entry(&hid->inputs, | |
89 | struct hid_input, list); | |
90 | struct list_head *report_list = | |
91 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
92 | struct input_dev *dev = hidinput->input; | |
93 | int error; | |
94 | ||
95 | if (list_empty(report_list)) { | |
96 | dev_err(&hid->dev, "no output reports found\n"); | |
97 | return -ENODEV; | |
98 | } | |
99 | ||
100 | report = list_first_entry(report_list, struct hid_report, list); | |
101 | if (report->maxfield < 1) { | |
102 | dev_err(&hid->dev, "no fields in the report\n"); | |
103 | return -ENODEV; | |
104 | } | |
105 | ||
106 | if (report->field[0]->report_count < 7) { | |
107 | dev_err(&hid->dev, "not enough values in the field\n"); | |
108 | return -ENODEV; | |
109 | } | |
110 | ||
111 | drff = kzalloc(sizeof(struct drff_device), GFP_KERNEL); | |
112 | if (!drff) | |
113 | return -ENOMEM; | |
114 | ||
115 | set_bit(FF_RUMBLE, dev->ffbit); | |
116 | ||
117 | error = input_ff_create_memless(dev, drff, drff_play); | |
118 | if (error) { | |
119 | kfree(drff); | |
120 | return error; | |
121 | } | |
122 | ||
123 | drff->report = report; | |
124 | drff->report->field[0]->value[0] = 0xf3; | |
125 | drff->report->field[0]->value[1] = 0x00; | |
126 | drff->report->field[0]->value[2] = 0x00; | |
127 | drff->report->field[0]->value[3] = 0x00; | |
128 | drff->report->field[0]->value[4] = 0x00; | |
129 | drff->report->field[0]->value[5] = 0x00; | |
130 | drff->report->field[0]->value[6] = 0x00; | |
131 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
132 | ||
133 | dev_info(&hid->dev, "Force Feedback for DragonRise Inc. game " | |
134 | "controllers by Richard Walmsley <richwalm@gmail.com>\n"); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | static int dr_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
140 | { | |
141 | int ret; | |
142 | ||
143 | dev_dbg(&hdev->dev, "DragonRise Inc. HID hardware probe..."); | |
144 | ||
145 | ret = hid_parse(hdev); | |
146 | if (ret) { | |
147 | dev_err(&hdev->dev, "parse failed\n"); | |
148 | goto err; | |
149 | } | |
150 | ||
151 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
152 | if (ret) { | |
153 | dev_err(&hdev->dev, "hw start failed\n"); | |
154 | goto err; | |
155 | } | |
156 | ||
157 | drff_init(hdev); | |
158 | ||
159 | return 0; | |
160 | err: | |
161 | return ret; | |
162 | } | |
163 | ||
164 | static const struct hid_device_id dr_devices[] = { | |
165 | { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006), }, | |
166 | { } | |
167 | }; | |
168 | MODULE_DEVICE_TABLE(hid, dr_devices); | |
169 | ||
170 | static struct hid_driver dr_driver = { | |
171 | .name = "dragonrise", | |
172 | .id_table = dr_devices, | |
173 | .probe = dr_probe, | |
174 | }; | |
175 | ||
176 | static int __init dr_init(void) | |
177 | { | |
178 | return hid_register_driver(&dr_driver); | |
179 | } | |
180 | ||
181 | static void __exit dr_exit(void) | |
182 | { | |
183 | hid_unregister_driver(&dr_driver); | |
184 | } | |
185 | ||
186 | module_init(dr_init); | |
187 | module_exit(dr_exit); | |
188 | MODULE_LICENSE("GPL"); |