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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" | |
36 | #include "usbhid/usbhid.h" | |
37 | ||
38 | struct axff_device { | |
39 | struct hid_report *report; | |
40 | }; | |
41 | ||
42 | static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect) | |
43 | { | |
44 | struct hid_device *hid = input_get_drvdata(dev); | |
45 | struct axff_device *axff = data; | |
46 | int left, right; | |
47 | ||
48 | left = effect->u.rumble.strong_magnitude; | |
49 | right = effect->u.rumble.weak_magnitude; | |
50 | ||
51 | dbg_hid("called with 0x%04x 0x%04x", left, right); | |
52 | ||
53 | left = left * 0xff / 0xffff; | |
54 | right = right * 0xff / 0xffff; | |
55 | ||
56 | axff->report->field[0]->value[0] = left; | |
57 | axff->report->field[1]->value[0] = right; | |
58 | axff->report->field[2]->value[0] = left; | |
59 | axff->report->field[3]->value[0] = right; | |
60 | dbg_hid("running with 0x%02x 0x%02x", left, right); | |
61 | usbhid_submit_report(hid, axff->report, USB_DIR_OUT); | |
62 | ||
63 | return 0; | |
64 | } | |
65 | ||
66 | static int axff_init(struct hid_device *hid) | |
67 | { | |
68 | struct axff_device *axff; | |
69 | struct hid_report *report; | |
70 | struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list); | |
71 | struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
72 | struct input_dev *dev = hidinput->input; | |
73 | int error; | |
74 | ||
75 | if (list_empty(report_list)) { | |
76 | dev_err(&hid->dev, "no output reports found\n"); | |
77 | return -ENODEV; | |
78 | } | |
79 | ||
80 | report = list_first_entry(report_list, struct hid_report, list); | |
81 | ||
82 | if (report->maxfield < 4) { | |
83 | dev_err(&hid->dev, "no fields in the report: %d\n", report->maxfield); | |
84 | return -ENODEV; | |
85 | } | |
86 | ||
87 | axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL); | |
88 | if (!axff) | |
89 | return -ENOMEM; | |
90 | ||
91 | set_bit(FF_RUMBLE, dev->ffbit); | |
92 | ||
93 | error = input_ff_create_memless(dev, axff, axff_play); | |
94 | if (error) | |
95 | goto err_free_mem; | |
96 | ||
97 | axff->report = report; | |
98 | axff->report->field[0]->value[0] = 0x00; | |
99 | axff->report->field[1]->value[0] = 0x00; | |
100 | axff->report->field[2]->value[0] = 0x00; | |
101 | axff->report->field[3]->value[0] = 0x00; | |
102 | usbhid_submit_report(hid, axff->report, USB_DIR_OUT); | |
103 | ||
104 | dev_info(&hid->dev, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n"); | |
105 | ||
106 | return 0; | |
107 | ||
108 | err_free_mem: | |
109 | kfree(axff); | |
110 | return error; | |
111 | } | |
112 | ||
113 | static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
114 | { | |
115 | int error; | |
116 | ||
117 | dev_dbg(&hdev->dev, "ACRUX HID hardware probe..."); | |
118 | ||
119 | error = hid_parse(hdev); | |
120 | if (error) { | |
121 | dev_err(&hdev->dev, "parse failed\n"); | |
122 | return error; | |
123 | } | |
124 | ||
125 | error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
126 | if (error) { | |
127 | dev_err(&hdev->dev, "hw start failed\n"); | |
128 | return error; | |
129 | } | |
130 | ||
131 | error = axff_init(hdev); | |
132 | if (error) { | |
133 | /* | |
134 | * Do not fail device initialization completely as device | |
135 | * may still be partially operable, just warn. | |
136 | */ | |
137 | dev_warn(&hdev->dev, | |
138 | "Failed to enable force feedback support, error: %d\n", | |
139 | error); | |
140 | } | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | static const struct hid_device_id ax_devices[] = { | |
146 | { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), }, | |
147 | { } | |
148 | }; | |
149 | MODULE_DEVICE_TABLE(hid, ax_devices); | |
150 | ||
151 | static struct hid_driver ax_driver = { | |
152 | .name = "acrux", | |
153 | .id_table = ax_devices, | |
154 | .probe = ax_probe, | |
155 | }; | |
156 | ||
157 | static int __init ax_init(void) | |
158 | { | |
159 | return hid_register_driver(&ax_driver); | |
160 | } | |
161 | ||
162 | static void __exit ax_exit(void) | |
163 | { | |
164 | hid_unregister_driver(&ax_driver); | |
165 | } | |
166 | ||
167 | module_init(ax_init); | |
168 | module_exit(ax_exit); | |
169 | ||
170 | MODULE_AUTHOR("Sergei Kolzun"); | |
171 | MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers"); | |
172 | MODULE_LICENSE("GPL"); |