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c0dbcc33 SK |
1 | /* |
2 | * Force feedback support for ACRUX game controllers | |
3 | * | |
4 | * From what I have gathered, these devices are mass produced in China | |
5 | * by several vendors. They often share the same design as the original | |
6 | * Xbox 360 controller. | |
7 | * | |
8 | * 1a34:0802 "ACRUX USB GAMEPAD 8116" | |
9 | * - tested with a EXEQ EQ-PCU-02090 game controller. | |
10 | * | |
11 | * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru> | |
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" | |
0ae43810 DT |
36 | |
37 | #ifdef CONFIG_HID_ACRUX_FF | |
c0dbcc33 SK |
38 | #include "usbhid/usbhid.h" |
39 | ||
40 | struct axff_device { | |
41 | struct hid_report *report; | |
42 | }; | |
43 | ||
44 | static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect) | |
45 | { | |
46 | struct hid_device *hid = input_get_drvdata(dev); | |
47 | struct axff_device *axff = data; | |
48 | int left, right; | |
49 | ||
50 | left = effect->u.rumble.strong_magnitude; | |
51 | right = effect->u.rumble.weak_magnitude; | |
52 | ||
53 | dbg_hid("called with 0x%04x 0x%04x", left, right); | |
54 | ||
55 | left = left * 0xff / 0xffff; | |
56 | right = right * 0xff / 0xffff; | |
57 | ||
58 | axff->report->field[0]->value[0] = left; | |
59 | axff->report->field[1]->value[0] = right; | |
60 | axff->report->field[2]->value[0] = left; | |
61 | axff->report->field[3]->value[0] = right; | |
62 | dbg_hid("running with 0x%02x 0x%02x", left, right); | |
63 | usbhid_submit_report(hid, axff->report, USB_DIR_OUT); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | static int axff_init(struct hid_device *hid) | |
69 | { | |
70 | struct axff_device *axff; | |
71 | struct hid_report *report; | |
72 | struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list); | |
73 | struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
74 | struct input_dev *dev = hidinput->input; | |
75 | int error; | |
76 | ||
77 | if (list_empty(report_list)) { | |
4291ee30 | 78 | hid_err(hid, "no output reports found\n"); |
c0dbcc33 SK |
79 | return -ENODEV; |
80 | } | |
81 | ||
82 | report = list_first_entry(report_list, struct hid_report, list); | |
83 | ||
84 | if (report->maxfield < 4) { | |
4291ee30 | 85 | hid_err(hid, "no fields in the report: %d\n", report->maxfield); |
c0dbcc33 SK |
86 | return -ENODEV; |
87 | } | |
88 | ||
89 | axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL); | |
90 | if (!axff) | |
91 | return -ENOMEM; | |
92 | ||
93 | set_bit(FF_RUMBLE, dev->ffbit); | |
94 | ||
95 | error = input_ff_create_memless(dev, axff, axff_play); | |
96 | if (error) | |
97 | goto err_free_mem; | |
98 | ||
99 | axff->report = report; | |
100 | axff->report->field[0]->value[0] = 0x00; | |
101 | axff->report->field[1]->value[0] = 0x00; | |
102 | axff->report->field[2]->value[0] = 0x00; | |
103 | axff->report->field[3]->value[0] = 0x00; | |
104 | usbhid_submit_report(hid, axff->report, USB_DIR_OUT); | |
105 | ||
4291ee30 | 106 | hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n"); |
c0dbcc33 SK |
107 | |
108 | return 0; | |
109 | ||
110 | err_free_mem: | |
111 | kfree(axff); | |
112 | return error; | |
113 | } | |
0ae43810 DT |
114 | #else |
115 | static inline int axff_init(struct hid_device *hid) | |
116 | { | |
117 | return 0; | |
118 | } | |
119 | #endif | |
c0dbcc33 SK |
120 | |
121 | static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
122 | { | |
123 | int error; | |
124 | ||
4291ee30 | 125 | dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n"); |
c0dbcc33 SK |
126 | |
127 | error = hid_parse(hdev); | |
128 | if (error) { | |
4291ee30 | 129 | hid_err(hdev, "parse failed\n"); |
c0dbcc33 SK |
130 | return error; |
131 | } | |
132 | ||
133 | error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
134 | if (error) { | |
4291ee30 | 135 | hid_err(hdev, "hw start failed\n"); |
c0dbcc33 SK |
136 | return error; |
137 | } | |
138 | ||
139 | error = axff_init(hdev); | |
140 | if (error) { | |
141 | /* | |
142 | * Do not fail device initialization completely as device | |
143 | * may still be partially operable, just warn. | |
144 | */ | |
4291ee30 | 145 | hid_warn(hdev, |
c0dbcc33 SK |
146 | "Failed to enable force feedback support, error: %d\n", |
147 | error); | |
148 | } | |
149 | ||
0ae43810 DT |
150 | /* |
151 | * We need to start polling device right away, otherwise | |
152 | * it will go into a coma. | |
153 | */ | |
154 | error = hid_hw_open(hdev); | |
155 | if (error) { | |
156 | dev_err(&hdev->dev, "hw open failed\n"); | |
b30d89d1 | 157 | hid_hw_stop(hdev); |
0ae43810 DT |
158 | return error; |
159 | } | |
160 | ||
c0dbcc33 SK |
161 | return 0; |
162 | } | |
163 | ||
0ae43810 DT |
164 | static void ax_remove(struct hid_device *hdev) |
165 | { | |
166 | hid_hw_close(hdev); | |
167 | hid_hw_stop(hdev); | |
168 | } | |
169 | ||
c0dbcc33 SK |
170 | static const struct hid_device_id ax_devices[] = { |
171 | { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), }, | |
172 | { } | |
173 | }; | |
174 | MODULE_DEVICE_TABLE(hid, ax_devices); | |
175 | ||
176 | static struct hid_driver ax_driver = { | |
0ae43810 DT |
177 | .name = "acrux", |
178 | .id_table = ax_devices, | |
179 | .probe = ax_probe, | |
180 | .remove = ax_remove, | |
c0dbcc33 SK |
181 | }; |
182 | ||
183 | static int __init ax_init(void) | |
184 | { | |
185 | return hid_register_driver(&ax_driver); | |
186 | } | |
187 | ||
188 | static void __exit ax_exit(void) | |
189 | { | |
190 | hid_unregister_driver(&ax_driver); | |
191 | } | |
192 | ||
193 | module_init(ax_init); | |
194 | module_exit(ax_exit); | |
195 | ||
196 | MODULE_AUTHOR("Sergei Kolzun"); | |
197 | MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers"); | |
198 | MODULE_LICENSE("GPL"); |