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42859e0b LL |
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> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
42859e0b LL |
32 | #include <linux/usb.h> |
33 | #include <linux/hid.h> | |
8f86a2c3 | 34 | #include <linux/module.h> |
42859e0b | 35 | #include "hid-ids.h" |
0f6f4319 JK |
36 | |
37 | #ifdef CONFIG_GREENASIA_FF | |
42859e0b LL |
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)) { | |
4291ee30 | 91 | hid_err(hid, "no output reports found\n"); |
42859e0b LL |
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) { | |
4291ee30 | 99 | hid_err(hid, "no fields in the report\n"); |
42859e0b LL |
100 | return -ENODEV; |
101 | } | |
102 | ||
103 | if (report->field[0]->report_count < 6) { | |
4291ee30 | 104 | hid_err(hid, "not enough values in the field\n"); |
42859e0b LL |
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 | ||
4291ee30 | 132 | hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n"); |
42859e0b LL |
133 | |
134 | return 0; | |
135 | } | |
0f6f4319 JK |
136 | #else |
137 | static inline int gaff_init(struct hid_device *hdev) | |
138 | { | |
139 | return 0; | |
140 | } | |
141 | #endif | |
42859e0b LL |
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) { | |
4291ee30 | 151 | hid_err(hdev, "parse failed\n"); |
42859e0b LL |
152 | goto err; |
153 | } | |
154 | ||
155 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
156 | if (ret) { | |
4291ee30 | 157 | hid_err(hdev, "hw start failed\n"); |
42859e0b LL |
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 | }; | |
f425458e | 179 | module_hid_driver(ga_driver); |
42859e0b | 180 | |
42859e0b | 181 | MODULE_LICENSE("GPL"); |