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1 | /* |
2 | * Force feedback support for various HID compliant devices by ThrustMaster: |
3 | * ThrustMaster FireStorm Dual Power 2 |
4 | * and possibly others whose device ids haven't been added. |
5 | * |
6 | * Modified to support ThrustMaster devices by Zinx Verituse |
7 | * on 2003-01-25 from the Logitech force feedback driver, |
8 | * which is by Johann Deneux. |
9 | * |
10 | * Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org> |
11 | * Copyright (c) 2002 Johann Deneux |
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/hid.h> |
31 | #include <linux/input.h> |
32 | #include <linux/slab.h> |
33 | #include <linux/usb.h> |
34 | |
35 | #include "hid-ids.h" |
36 | |
37 | static const signed short ff_rumble[] = { |
38 | FF_RUMBLE, |
39 | -1 |
40 | }; |
41 | |
42 | static const signed short ff_joystick[] = { |
43 | FF_CONSTANT, |
44 | -1 |
45 | }; |
46 | |
47 | #ifdef CONFIG_THRUSTMASTER_FF |
48 | #include "usbhid/usbhid.h" |
49 | |
50 | /* Usages for thrustmaster devices I know about */ |
51 | #define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) |
52 | |
53 | struct tmff_device { |
54 | struct hid_report *report; |
55 | struct hid_field *ff_field; |
56 | }; |
57 | |
58 | /* Changes values from 0 to 0xffff into values from minimum to maximum */ |
59 | static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum) |
60 | { |
61 | int ret; |
62 | |
63 | ret = (in * (maximum - minimum) / 0xffff) + minimum; |
64 | if (ret < minimum) |
65 | return minimum; |
66 | if (ret > maximum) |
67 | return maximum; |
68 | return ret; |
69 | } |
70 | |
71 | /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ |
72 | static inline int tmff_scale_s8(int in, int minimum, int maximum) |
73 | { |
74 | int ret; |
75 | |
76 | ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; |
77 | if (ret < minimum) |
78 | return minimum; |
79 | if (ret > maximum) |
80 | return maximum; |
81 | return ret; |
82 | } |
83 | |
84 | static int tmff_play(struct input_dev *dev, void *data, |
85 | struct ff_effect *effect) |
86 | { |
87 | struct hid_device *hid = input_get_drvdata(dev); |
88 | struct tmff_device *tmff = data; |
89 | struct hid_field *ff_field = tmff->ff_field; |
90 | int x, y; |
91 | int left, right; /* Rumbling */ |
92 | |
93 | switch (effect->type) { |
94 | case FF_CONSTANT: |
95 | x = tmff_scale_s8(effect->u.ramp.start_level, |
96 | ff_field->logical_minimum, |
97 | ff_field->logical_maximum); |
98 | y = tmff_scale_s8(effect->u.ramp.end_level, |
99 | ff_field->logical_minimum, |
100 | ff_field->logical_maximum); |
101 | |
102 | dbg_hid("(x, y)=(%04x, %04x)\n", x, y); |
103 | ff_field->value[0] = x; |
104 | ff_field->value[1] = y; |
105 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); |
106 | break; |
107 | |
108 | case FF_RUMBLE: |
109 | left = tmff_scale_u16(effect->u.rumble.weak_magnitude, |
110 | ff_field->logical_minimum, |
111 | ff_field->logical_maximum); |
112 | right = tmff_scale_u16(effect->u.rumble.strong_magnitude, |
113 | ff_field->logical_minimum, |
114 | ff_field->logical_maximum); |
115 | |
116 | dbg_hid("(left,right)=(%08x, %08x)\n", left, right); |
117 | ff_field->value[0] = left; |
118 | ff_field->value[1] = right; |
119 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); |
120 | break; |
121 | } |
122 | return 0; |
123 | } |
124 | |
125 | static int tmff_init(struct hid_device *hid, const signed short *ff_bits) |
126 | { |
127 | struct tmff_device *tmff; |
128 | struct hid_report *report; |
129 | struct list_head *report_list; |
130 | struct hid_input *hidinput = list_entry(hid->inputs.next, |
131 | struct hid_input, list); |
132 | struct input_dev *input_dev = hidinput->input; |
133 | int error; |
134 | int i; |
135 | |
136 | tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); |
137 | if (!tmff) |
138 | return -ENOMEM; |
139 | |
140 | /* Find the report to use */ |
141 | report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
142 | list_for_each_entry(report, report_list, list) { |
143 | int fieldnum; |
144 | |
145 | for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { |
146 | struct hid_field *field = report->field[fieldnum]; |
147 | |
148 | if (field->maxusage <= 0) |
149 | continue; |
150 | |
151 | switch (field->usage[0].hid) { |
152 | case THRUSTMASTER_USAGE_FF: |
153 | if (field->report_count < 2) { |
154 | dev_warn(&hid->dev, "ignoring FF field " |
155 | "with report_count < 2\n"); |
156 | continue; |
157 | } |
158 | |
159 | if (field->logical_maximum == |
160 | field->logical_minimum) { |
161 | dev_warn(&hid->dev, "ignoring FF field " |
162 | "with logical_maximum " |
163 | "== logical_minimum\n"); |
164 | continue; |
165 | } |
166 | |
167 | if (tmff->report && tmff->report != report) { |
168 | dev_warn(&hid->dev, "ignoring FF field " |
169 | "in other report\n"); |
170 | continue; |
171 | } |
172 | |
173 | if (tmff->ff_field && tmff->ff_field != field) { |
174 | dev_warn(&hid->dev, "ignoring " |
175 | "duplicate FF field\n"); |
176 | continue; |
177 | } |
178 | |
179 | tmff->report = report; |
180 | tmff->ff_field = field; |
181 | |
182 | for (i = 0; ff_bits[i] >= 0; i++) |
183 | set_bit(ff_bits[i], input_dev->ffbit); |
184 | |
185 | break; |
186 | |
187 | default: |
188 | dev_warn(&hid->dev, "ignoring unknown output " |
189 | "usage %08x\n", |
190 | field->usage[0].hid); |
191 | continue; |
192 | } |
193 | } |
194 | } |
195 | |
196 | if (!tmff->report) { |
197 | dev_err(&hid->dev, "can't find FF field in output reports\n"); |
198 | error = -ENODEV; |
199 | goto fail; |
200 | } |
201 | |
202 | error = input_ff_create_memless(input_dev, tmff, tmff_play); |
203 | if (error) |
204 | goto fail; |
205 | |
206 | dev_info(&hid->dev, "force feedback for ThrustMaster devices by Zinx " |
207 | "Verituse <zinx@epicsol.org>"); |
208 | return 0; |
209 | |
210 | fail: |
211 | kfree(tmff); |
212 | return error; |
213 | } |
214 | #else |
215 | static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits) |
216 | { |
217 | return 0; |
218 | } |
219 | #endif |
220 | |
221 | static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) |
222 | { |
223 | int ret; |
224 | |
225 | ret = hid_parse(hdev); |
226 | if (ret) { |
227 | dev_err(&hdev->dev, "parse failed\n"); |
228 | goto err; |
229 | } |
230 | |
231 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
232 | if (ret) { |
233 | dev_err(&hdev->dev, "hw start failed\n"); |
234 | goto err; |
235 | } |
236 | |
237 | tmff_init(hdev, (void *)id->driver_data); |
238 | |
239 | return 0; |
240 | err: |
241 | return ret; |
242 | } |
243 | |
244 | static const struct hid_device_id tm_devices[] = { |
245 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), |
246 | .driver_data = (unsigned long)ff_rumble }, |
247 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), /* FireStorm Dual Power 2 (and 3) */ |
248 | .driver_data = (unsigned long)ff_rumble }, |
249 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323), /* Dual Trigger 3-in-1 (PC Mode) */ |
250 | .driver_data = (unsigned long)ff_rumble }, |
251 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324), /* Dual Trigger 3-in-1 (PS3 Mode) */ |
252 | .driver_data = (unsigned long)ff_rumble }, |
253 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ |
254 | .driver_data = (unsigned long)ff_rumble }, |
255 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653), /* RGT Force Feedback CLUTCH Raging Wheel */ |
256 | .driver_data = (unsigned long)ff_joystick }, |
257 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ |
258 | .driver_data = (unsigned long)ff_joystick }, |
259 | { } |
260 | }; |
261 | MODULE_DEVICE_TABLE(hid, tm_devices); |
262 | |
263 | static struct hid_driver tm_driver = { |
264 | .name = "thrustmaster", |
265 | .id_table = tm_devices, |
266 | .probe = tm_probe, |
267 | }; |
268 | |
269 | static int __init tm_init(void) |
270 | { |
271 | return hid_register_driver(&tm_driver); |
272 | } |
273 | |
274 | static void __exit tm_exit(void) |
275 | { |
276 | hid_unregister_driver(&tm_driver); |
277 | } |
278 | |
279 | module_init(tm_init); |
280 | module_exit(tm_exit); |
281 | MODULE_LICENSE("GPL"); |
282 |
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