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1da177e4 LT |
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 | ||
10e41a71 | 30 | #include <linux/hid.h> |
1da177e4 | 31 | #include <linux/input.h> |
1da177e4 LT |
32 | #include <linux/usb.h> |
33 | ||
10e41a71 JS |
34 | #include "hid-ids.h" |
35 | ||
36 | #include "usbhid/usbhid.h" | |
1da177e4 LT |
37 | |
38 | /* Usages for thrustmaster devices I know about */ | |
b27c9590 | 39 | #define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) |
1da177e4 | 40 | |
b27c9590 DT |
41 | static const signed short ff_rumble[] = { |
42 | FF_RUMBLE, | |
43 | -1 | |
44 | }; | |
45 | ||
46 | static const signed short ff_joystick[] = { | |
47 | FF_CONSTANT, | |
48 | -1 | |
49 | }; | |
50 | ||
1da177e4 | 51 | struct tmff_device { |
1da177e4 | 52 | struct hid_report *report; |
b27c9590 | 53 | struct hid_field *ff_field; |
dc76c912 | 54 | }; |
1da177e4 | 55 | |
dc76c912 | 56 | /* Changes values from 0 to 0xffff into values from minimum to maximum */ |
10e41a71 | 57 | static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum) |
dc76c912 AH |
58 | { |
59 | int ret; | |
1da177e4 | 60 | |
dc76c912 AH |
61 | ret = (in * (maximum - minimum) / 0xffff) + minimum; |
62 | if (ret < minimum) | |
63 | return minimum; | |
64 | if (ret > maximum) | |
65 | return maximum; | |
66 | return ret; | |
67 | } | |
1da177e4 | 68 | |
b27c9590 | 69 | /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ |
10e41a71 | 70 | static inline int tmff_scale_s8(int in, int minimum, int maximum) |
b27c9590 DT |
71 | { |
72 | int ret; | |
73 | ||
74 | ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; | |
75 | if (ret < minimum) | |
76 | return minimum; | |
77 | if (ret > maximum) | |
78 | return maximum; | |
79 | return ret; | |
80 | } | |
81 | ||
10e41a71 JS |
82 | static int tmff_play(struct input_dev *dev, void *data, |
83 | struct ff_effect *effect) | |
dc76c912 | 84 | { |
e0712985 | 85 | struct hid_device *hid = input_get_drvdata(dev); |
dc76c912 | 86 | struct tmff_device *tmff = data; |
b27c9590 DT |
87 | struct hid_field *ff_field = tmff->ff_field; |
88 | int x, y; | |
dc76c912 | 89 | int left, right; /* Rumbling */ |
1da177e4 | 90 | |
b27c9590 DT |
91 | switch (effect->type) { |
92 | case FF_CONSTANT: | |
10e41a71 | 93 | x = tmff_scale_s8(effect->u.ramp.start_level, |
b27c9590 DT |
94 | ff_field->logical_minimum, |
95 | ff_field->logical_maximum); | |
10e41a71 | 96 | y = tmff_scale_s8(effect->u.ramp.end_level, |
b27c9590 DT |
97 | ff_field->logical_minimum, |
98 | ff_field->logical_maximum); | |
99 | ||
100 | dbg_hid("(x, y)=(%04x, %04x)\n", x, y); | |
101 | ff_field->value[0] = x; | |
102 | ff_field->value[1] = y; | |
103 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); | |
104 | break; | |
105 | ||
106 | case FF_RUMBLE: | |
10e41a71 | 107 | left = tmff_scale_u16(effect->u.rumble.weak_magnitude, |
b27c9590 DT |
108 | ff_field->logical_minimum, |
109 | ff_field->logical_maximum); | |
10e41a71 | 110 | right = tmff_scale_u16(effect->u.rumble.strong_magnitude, |
b27c9590 DT |
111 | ff_field->logical_minimum, |
112 | ff_field->logical_maximum); | |
113 | ||
114 | dbg_hid("(left,right)=(%08x, %08x)\n", left, right); | |
115 | ff_field->value[0] = left; | |
116 | ff_field->value[1] = right; | |
117 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); | |
118 | break; | |
119 | } | |
dc76c912 AH |
120 | return 0; |
121 | } | |
1da177e4 | 122 | |
10e41a71 | 123 | static int tmff_init(struct hid_device *hid, const signed short *ff_bits) |
1da177e4 | 124 | { |
dc76c912 | 125 | struct tmff_device *tmff; |
3ba5619f LZ |
126 | struct hid_report *report; |
127 | struct list_head *report_list; | |
10e41a71 JS |
128 | struct hid_input *hidinput = list_entry(hid->inputs.next, |
129 | struct hid_input, list); | |
c5b7c7c3 | 130 | struct input_dev *input_dev = hidinput->input; |
dc76c912 | 131 | int error; |
b27c9590 | 132 | int i; |
1da177e4 | 133 | |
dc76c912 AH |
134 | tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); |
135 | if (!tmff) | |
1da177e4 LT |
136 | return -ENOMEM; |
137 | ||
1da177e4 | 138 | /* Find the report to use */ |
3ba5619f LZ |
139 | report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
140 | list_for_each_entry(report, report_list, list) { | |
1da177e4 LT |
141 | int fieldnum; |
142 | ||
143 | for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { | |
144 | struct hid_field *field = report->field[fieldnum]; | |
145 | ||
146 | if (field->maxusage <= 0) | |
147 | continue; | |
148 | ||
149 | switch (field->usage[0].hid) { | |
b27c9590 DT |
150 | case THRUSTMASTER_USAGE_FF: |
151 | if (field->report_count < 2) { | |
79575019 JS |
152 | dev_warn(&hid->dev, "ignoring FF field " |
153 | "with report_count < 2\n"); | |
b27c9590 DT |
154 | continue; |
155 | } | |
1da177e4 | 156 | |
10e41a71 JS |
157 | if (field->logical_maximum == |
158 | field->logical_minimum) { | |
79575019 JS |
159 | dev_warn(&hid->dev, "ignoring FF field " |
160 | "with logical_maximum " | |
161 | "== logical_minimum\n"); | |
b27c9590 DT |
162 | continue; |
163 | } | |
1da177e4 | 164 | |
b27c9590 | 165 | if (tmff->report && tmff->report != report) { |
79575019 JS |
166 | dev_warn(&hid->dev, "ignoring FF field " |
167 | "in other report\n"); | |
b27c9590 DT |
168 | continue; |
169 | } | |
1da177e4 | 170 | |
b27c9590 | 171 | if (tmff->ff_field && tmff->ff_field != field) { |
79575019 JS |
172 | dev_warn(&hid->dev, "ignoring " |
173 | "duplicate FF field\n"); | |
b27c9590 DT |
174 | continue; |
175 | } | |
176 | ||
177 | tmff->report = report; | |
178 | tmff->ff_field = field; | |
179 | ||
b27c9590 DT |
180 | for (i = 0; ff_bits[i] >= 0; i++) |
181 | set_bit(ff_bits[i], input_dev->ffbit); | |
1da177e4 | 182 | |
b27c9590 | 183 | break; |
1da177e4 | 184 | |
b27c9590 | 185 | default: |
79575019 JS |
186 | dev_warn(&hid->dev, "ignoring unknown output " |
187 | "usage %08x\n", | |
10e41a71 | 188 | field->usage[0].hid); |
b27c9590 | 189 | continue; |
1da177e4 | 190 | } |
1da177e4 LT |
191 | } |
192 | } | |
193 | ||
b27c9590 | 194 | if (!tmff->report) { |
79575019 | 195 | dev_err(&hid->dev, "can't find FF field in output reports\n"); |
b27c9590 DT |
196 | error = -ENODEV; |
197 | goto fail; | |
1da177e4 LT |
198 | } |
199 | ||
10e41a71 | 200 | error = input_ff_create_memless(input_dev, tmff, tmff_play); |
b27c9590 DT |
201 | if (error) |
202 | goto fail; | |
1da177e4 | 203 | |
79575019 JS |
204 | dev_info(&hid->dev, "force feedback for ThrustMaster devices by Zinx " |
205 | "Verituse <zinx@epicsol.org>"); | |
1da177e4 | 206 | return 0; |
b27c9590 | 207 | |
10e41a71 | 208 | fail: |
b27c9590 DT |
209 | kfree(tmff); |
210 | return error; | |
1da177e4 LT |
211 | } |
212 | ||
10e41a71 JS |
213 | static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) |
214 | { | |
215 | int ret; | |
216 | ||
217 | ret = hid_parse(hdev); | |
218 | if (ret) { | |
219 | dev_err(&hdev->dev, "parse failed\n"); | |
220 | goto err; | |
221 | } | |
222 | ||
223 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
224 | if (ret) { | |
225 | dev_err(&hdev->dev, "hw start failed\n"); | |
226 | goto err; | |
227 | } | |
228 | ||
229 | tmff_init(hdev, (void *)id->driver_data); | |
230 | ||
231 | return 0; | |
232 | err: | |
233 | return ret; | |
234 | } | |
235 | ||
236 | static const struct hid_device_id tm_devices[] = { | |
237 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), | |
238 | .driver_data = (unsigned long)ff_rumble }, | |
239 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), | |
240 | .driver_data = (unsigned long)ff_rumble }, | |
241 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ | |
242 | .driver_data = (unsigned long)ff_rumble }, | |
243 | { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ | |
244 | .driver_data = (unsigned long)ff_joystick }, | |
245 | { } | |
246 | }; | |
247 | MODULE_DEVICE_TABLE(hid, tm_devices); | |
248 | ||
249 | static struct hid_driver tm_driver = { | |
250 | .name = "thrustmaster", | |
251 | .id_table = tm_devices, | |
252 | .probe = tm_probe, | |
253 | }; | |
254 | ||
255 | static int tm_init(void) | |
256 | { | |
257 | return hid_register_driver(&tm_driver); | |
258 | } | |
259 | ||
260 | static void tm_exit(void) | |
261 | { | |
262 | hid_unregister_driver(&tm_driver); | |
263 | } | |
264 | ||
265 | module_init(tm_init); | |
266 | module_exit(tm_exit); | |
267 | MODULE_LICENSE("GPL"); |