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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/slab.h> | |
32 | #include <linux/usb.h> | |
33 | #include <linux/hid.h> | |
34 | ||
35 | #include "hid-ids.h" | |
36 | ||
37 | #ifdef CONFIG_DRAGONRISE_FF | |
38 | #include "usbhid/usbhid.h" | |
39 | ||
40 | struct drff_device { | |
41 | struct hid_report *report; | |
42 | }; | |
43 | ||
44 | static int drff_play(struct input_dev *dev, void *data, | |
45 | struct ff_effect *effect) | |
46 | { | |
47 | struct hid_device *hid = input_get_drvdata(dev); | |
48 | struct drff_device *drff = data; | |
49 | int strong, weak; | |
50 | ||
51 | strong = effect->u.rumble.strong_magnitude; | |
52 | weak = effect->u.rumble.weak_magnitude; | |
53 | ||
54 | dbg_hid("called with 0x%04x 0x%04x", strong, weak); | |
55 | ||
56 | if (strong || weak) { | |
57 | strong = strong * 0xff / 0xffff; | |
58 | weak = weak * 0xff / 0xffff; | |
59 | ||
60 | /* While reverse engineering this device, I found that when | |
61 | this value is set, it causes the strong rumble to function | |
62 | at a near maximum speed, so we'll bypass it. */ | |
63 | if (weak == 0x0a) | |
64 | weak = 0x0b; | |
65 | ||
66 | drff->report->field[0]->value[0] = 0x51; | |
67 | drff->report->field[0]->value[1] = 0x00; | |
68 | drff->report->field[0]->value[2] = weak; | |
69 | drff->report->field[0]->value[4] = strong; | |
70 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
71 | ||
72 | drff->report->field[0]->value[0] = 0xfa; | |
73 | drff->report->field[0]->value[1] = 0xfe; | |
74 | } else { | |
75 | drff->report->field[0]->value[0] = 0xf3; | |
76 | drff->report->field[0]->value[1] = 0x00; | |
77 | } | |
78 | ||
79 | drff->report->field[0]->value[2] = 0x00; | |
80 | drff->report->field[0]->value[4] = 0x00; | |
81 | dbg_hid("running with 0x%02x 0x%02x", strong, weak); | |
82 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | static int drff_init(struct hid_device *hid) | |
88 | { | |
89 | struct drff_device *drff; | |
90 | struct hid_report *report; | |
91 | struct hid_input *hidinput = list_first_entry(&hid->inputs, | |
92 | struct hid_input, list); | |
93 | struct list_head *report_list = | |
94 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
95 | struct input_dev *dev = hidinput->input; | |
96 | int error; | |
97 | ||
98 | if (list_empty(report_list)) { | |
99 | dev_err(&hid->dev, "no output reports found\n"); | |
100 | return -ENODEV; | |
101 | } | |
102 | ||
103 | report = list_first_entry(report_list, struct hid_report, list); | |
104 | if (report->maxfield < 1) { | |
105 | dev_err(&hid->dev, "no fields in the report\n"); | |
106 | return -ENODEV; | |
107 | } | |
108 | ||
109 | if (report->field[0]->report_count < 7) { | |
110 | dev_err(&hid->dev, "not enough values in the field\n"); | |
111 | return -ENODEV; | |
112 | } | |
113 | ||
114 | drff = kzalloc(sizeof(struct drff_device), GFP_KERNEL); | |
115 | if (!drff) | |
116 | return -ENOMEM; | |
117 | ||
118 | set_bit(FF_RUMBLE, dev->ffbit); | |
119 | ||
120 | error = input_ff_create_memless(dev, drff, drff_play); | |
121 | if (error) { | |
122 | kfree(drff); | |
123 | return error; | |
124 | } | |
125 | ||
126 | drff->report = report; | |
127 | drff->report->field[0]->value[0] = 0xf3; | |
128 | drff->report->field[0]->value[1] = 0x00; | |
129 | drff->report->field[0]->value[2] = 0x00; | |
130 | drff->report->field[0]->value[3] = 0x00; | |
131 | drff->report->field[0]->value[4] = 0x00; | |
132 | drff->report->field[0]->value[5] = 0x00; | |
133 | drff->report->field[0]->value[6] = 0x00; | |
134 | usbhid_submit_report(hid, drff->report, USB_DIR_OUT); | |
135 | ||
136 | dev_info(&hid->dev, "Force Feedback for DragonRise Inc. game " | |
137 | "controllers by Richard Walmsley <richwalm@gmail.com>\n"); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | #else | |
142 | static inline int drff_init(struct hid_device *hid) | |
143 | { | |
144 | return 0; | |
145 | } | |
146 | #endif | |
147 | ||
148 | static int dr_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
149 | { | |
150 | int ret; | |
151 | ||
152 | dev_dbg(&hdev->dev, "DragonRise Inc. HID hardware probe..."); | |
153 | ||
154 | ret = hid_parse(hdev); | |
155 | if (ret) { | |
156 | dev_err(&hdev->dev, "parse failed\n"); | |
157 | goto err; | |
158 | } | |
159 | ||
160 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
161 | if (ret) { | |
162 | dev_err(&hdev->dev, "hw start failed\n"); | |
163 | goto err; | |
164 | } | |
165 | ||
166 | drff_init(hdev); | |
167 | ||
168 | return 0; | |
169 | err: | |
170 | return ret; | |
171 | } | |
172 | ||
173 | static const struct hid_device_id dr_devices[] = { | |
174 | { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006), }, | |
175 | { } | |
176 | }; | |
177 | MODULE_DEVICE_TABLE(hid, dr_devices); | |
178 | ||
179 | static struct hid_driver dr_driver = { | |
180 | .name = "dragonrise", | |
181 | .id_table = dr_devices, | |
182 | .probe = dr_probe, | |
183 | }; | |
184 | ||
185 | static int __init dr_init(void) | |
186 | { | |
187 | return hid_register_driver(&dr_driver); | |
188 | } | |
189 | ||
190 | static void __exit dr_exit(void) | |
191 | { | |
192 | hid_unregister_driver(&dr_driver); | |
193 | } | |
194 | ||
195 | module_init(dr_init); | |
196 | module_exit(dr_exit); | |
197 | MODULE_LICENSE("GPL"); |