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1 | /* | |
2 | * Force feedback support for PantherLord/GreenAsia based devices | |
3 | * | |
4 | * The devices are distributed under various names and the same USB device ID | |
5 | * can be used in both adapters and actual game controllers. | |
6 | * | |
7 | * 0810:0001 "Twin USB Joystick" | |
8 | * - tested with PantherLord USB/PS2 2in1 Adapter | |
9 | * - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT) | |
10 | * | |
11 | * 0e8f:0003 "GreenAsia Inc. USB Joystick " | |
12 | * - tested with König Gaming gamepad | |
13 | * | |
14 | * 0e8f:0003 "GASIA USB Gamepad" | |
15 | * - another version of the König gamepad | |
16 | * | |
17 | * 0f30:0111 "Saitek Color Rumble Pad" | |
18 | * | |
19 | * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com> | |
20 | */ | |
21 | ||
22 | /* | |
23 | * This program is free software; you can redistribute it and/or modify | |
24 | * it under the terms of the GNU General Public License as published by | |
25 | * the Free Software Foundation; either version 2 of the License, or | |
26 | * (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
31 | * GNU General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public License | |
34 | * along with this program; if not, write to the Free Software | |
35 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
36 | */ | |
37 | ||
38 | ||
39 | /* #define DEBUG */ | |
40 | ||
41 | #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) | |
42 | ||
43 | #include <linux/input.h> | |
44 | #include <linux/slab.h> | |
45 | #include <linux/module.h> | |
46 | #include <linux/hid.h> | |
47 | ||
48 | #include "hid-ids.h" | |
49 | ||
50 | #ifdef CONFIG_PANTHERLORD_FF | |
51 | ||
52 | struct plff_device { | |
53 | struct hid_report *report; | |
54 | s32 maxval; | |
55 | s32 *strong; | |
56 | s32 *weak; | |
57 | }; | |
58 | ||
59 | static int hid_plff_play(struct input_dev *dev, void *data, | |
60 | struct ff_effect *effect) | |
61 | { | |
62 | struct hid_device *hid = input_get_drvdata(dev); | |
63 | struct plff_device *plff = data; | |
64 | int left, right; | |
65 | ||
66 | left = effect->u.rumble.strong_magnitude; | |
67 | right = effect->u.rumble.weak_magnitude; | |
68 | debug("called with 0x%04x 0x%04x", left, right); | |
69 | ||
70 | left = left * plff->maxval / 0xffff; | |
71 | right = right * plff->maxval / 0xffff; | |
72 | ||
73 | *plff->strong = left; | |
74 | *plff->weak = right; | |
75 | debug("running with 0x%02x 0x%02x", left, right); | |
76 | hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT); | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | static int plff_init(struct hid_device *hid) | |
82 | { | |
83 | struct plff_device *plff; | |
84 | struct hid_report *report; | |
85 | struct hid_input *hidinput; | |
86 | struct list_head *report_list = | |
87 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
88 | struct list_head *report_ptr = report_list; | |
89 | struct input_dev *dev; | |
90 | int error; | |
91 | s32 maxval; | |
92 | s32 *strong; | |
93 | s32 *weak; | |
94 | ||
95 | /* The device contains one output report per physical device, all | |
96 | containing 1 field, which contains 4 ff00.0002 usages and 4 16bit | |
97 | absolute values. | |
98 | ||
99 | The input reports also contain a field which contains | |
100 | 8 ff00.0001 usages and 8 boolean values. Their meaning is | |
101 | currently unknown. | |
102 | ||
103 | A version of the 0e8f:0003 exists that has all the values in | |
104 | separate fields and misses the extra input field, thus resembling | |
105 | Zeroplus (hid-zpff) devices. | |
106 | */ | |
107 | ||
108 | if (list_empty(report_list)) { | |
109 | hid_err(hid, "no output reports found\n"); | |
110 | return -ENODEV; | |
111 | } | |
112 | ||
113 | list_for_each_entry(hidinput, &hid->inputs, list) { | |
114 | ||
115 | report_ptr = report_ptr->next; | |
116 | ||
117 | if (report_ptr == report_list) { | |
118 | hid_err(hid, "required output report is missing\n"); | |
119 | return -ENODEV; | |
120 | } | |
121 | ||
122 | report = list_entry(report_ptr, struct hid_report, list); | |
123 | if (report->maxfield < 1) { | |
124 | hid_err(hid, "no fields in the report\n"); | |
125 | return -ENODEV; | |
126 | } | |
127 | ||
128 | maxval = 0x7f; | |
129 | if (report->field[0]->report_count >= 4) { | |
130 | report->field[0]->value[0] = 0x00; | |
131 | report->field[0]->value[1] = 0x00; | |
132 | strong = &report->field[0]->value[2]; | |
133 | weak = &report->field[0]->value[3]; | |
134 | debug("detected single-field device"); | |
135 | } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 && | |
136 | report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) { | |
137 | report->field[0]->value[0] = 0x00; | |
138 | report->field[1]->value[0] = 0x00; | |
139 | strong = &report->field[2]->value[0]; | |
140 | weak = &report->field[3]->value[0]; | |
141 | if (hid->vendor == USB_VENDOR_ID_JESS2) | |
142 | maxval = 0xff; | |
143 | debug("detected 4-field device"); | |
144 | } else { | |
145 | hid_err(hid, "not enough fields or values\n"); | |
146 | return -ENODEV; | |
147 | } | |
148 | ||
149 | plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); | |
150 | if (!plff) | |
151 | return -ENOMEM; | |
152 | ||
153 | dev = hidinput->input; | |
154 | ||
155 | set_bit(FF_RUMBLE, dev->ffbit); | |
156 | ||
157 | error = input_ff_create_memless(dev, plff, hid_plff_play); | |
158 | if (error) { | |
159 | kfree(plff); | |
160 | return error; | |
161 | } | |
162 | ||
163 | plff->report = report; | |
164 | plff->strong = strong; | |
165 | plff->weak = weak; | |
166 | plff->maxval = maxval; | |
167 | ||
168 | *strong = 0x00; | |
169 | *weak = 0x00; | |
170 | hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT); | |
171 | } | |
172 | ||
173 | hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | #else | |
178 | static inline int plff_init(struct hid_device *hid) | |
179 | { | |
180 | return 0; | |
181 | } | |
182 | #endif | |
183 | ||
184 | static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
185 | { | |
186 | int ret; | |
187 | ||
188 | if (id->driver_data) | |
189 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; | |
190 | ||
191 | ret = hid_parse(hdev); | |
192 | if (ret) { | |
193 | hid_err(hdev, "parse failed\n"); | |
194 | goto err; | |
195 | } | |
196 | ||
197 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
198 | if (ret) { | |
199 | hid_err(hdev, "hw start failed\n"); | |
200 | goto err; | |
201 | } | |
202 | ||
203 | plff_init(hdev); | |
204 | ||
205 | return 0; | |
206 | err: | |
207 | return ret; | |
208 | } | |
209 | ||
210 | static const struct hid_device_id pl_devices[] = { | |
211 | { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), | |
212 | .driver_data = 1 }, /* Twin USB Joystick */ | |
213 | { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), | |
214 | .driver_data = 1 }, /* Twin USB Joystick */ | |
215 | { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, | |
216 | { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD), }, | |
217 | { } | |
218 | }; | |
219 | MODULE_DEVICE_TABLE(hid, pl_devices); | |
220 | ||
221 | static struct hid_driver pl_driver = { | |
222 | .name = "pantherlord", | |
223 | .id_table = pl_devices, | |
224 | .probe = pl_probe, | |
225 | }; | |
226 | module_hid_driver(pl_driver); | |
227 | ||
228 | MODULE_LICENSE("GPL"); |