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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 | ||
30 | #include <linux/input.h> | |
1da177e4 LT |
31 | |
32 | #undef DEBUG | |
33 | #include <linux/usb.h> | |
34 | ||
dde5845a | 35 | #include <linux/hid.h> |
4916b3a5 | 36 | #include "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 | struct dev_type { |
42 | u16 idVendor; | |
43 | u16 idProduct; | |
44 | const signed short *ff; | |
45 | }; | |
46 | ||
47 | static const signed short ff_rumble[] = { | |
48 | FF_RUMBLE, | |
49 | -1 | |
50 | }; | |
51 | ||
52 | static const signed short ff_joystick[] = { | |
53 | FF_CONSTANT, | |
54 | -1 | |
55 | }; | |
56 | ||
57 | static const struct dev_type devices[] = { | |
58 | { 0x44f, 0xb300, ff_rumble }, | |
59 | { 0x44f, 0xb304, ff_rumble }, | |
60 | { 0x44f, 0xb651, ff_rumble }, /* FGT Rumble Force Wheel */ | |
61 | { 0x44f, 0xb654, ff_joystick }, /* FGT Force Feedback Wheel */ | |
62 | }; | |
1da177e4 LT |
63 | |
64 | struct tmff_device { | |
1da177e4 | 65 | struct hid_report *report; |
b27c9590 | 66 | struct hid_field *ff_field; |
dc76c912 | 67 | }; |
1da177e4 | 68 | |
dc76c912 | 69 | /* Changes values from 0 to 0xffff into values from minimum to maximum */ |
b27c9590 DT |
70 | static inline int hid_tmff_scale_u16(unsigned int in, |
71 | int minimum, int maximum) | |
dc76c912 AH |
72 | { |
73 | int ret; | |
1da177e4 | 74 | |
dc76c912 AH |
75 | ret = (in * (maximum - minimum) / 0xffff) + minimum; |
76 | if (ret < minimum) | |
77 | return minimum; | |
78 | if (ret > maximum) | |
79 | return maximum; | |
80 | return ret; | |
81 | } | |
1da177e4 | 82 | |
b27c9590 DT |
83 | /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ |
84 | static inline int hid_tmff_scale_s8(int in, | |
85 | int minimum, int maximum) | |
86 | { | |
87 | int ret; | |
88 | ||
89 | ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; | |
90 | if (ret < minimum) | |
91 | return minimum; | |
92 | if (ret > maximum) | |
93 | return maximum; | |
94 | return ret; | |
95 | } | |
96 | ||
dc76c912 AH |
97 | static int hid_tmff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
98 | { | |
e0712985 | 99 | struct hid_device *hid = input_get_drvdata(dev); |
dc76c912 | 100 | struct tmff_device *tmff = data; |
b27c9590 DT |
101 | struct hid_field *ff_field = tmff->ff_field; |
102 | int x, y; | |
dc76c912 | 103 | int left, right; /* Rumbling */ |
1da177e4 | 104 | |
b27c9590 DT |
105 | switch (effect->type) { |
106 | case FF_CONSTANT: | |
107 | x = hid_tmff_scale_s8(effect->u.ramp.start_level, | |
108 | ff_field->logical_minimum, | |
109 | ff_field->logical_maximum); | |
110 | y = hid_tmff_scale_s8(effect->u.ramp.end_level, | |
111 | ff_field->logical_minimum, | |
112 | ff_field->logical_maximum); | |
113 | ||
114 | dbg_hid("(x, y)=(%04x, %04x)\n", x, y); | |
115 | ff_field->value[0] = x; | |
116 | ff_field->value[1] = y; | |
117 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); | |
118 | break; | |
119 | ||
120 | case FF_RUMBLE: | |
121 | left = hid_tmff_scale_u16(effect->u.rumble.weak_magnitude, | |
122 | ff_field->logical_minimum, | |
123 | ff_field->logical_maximum); | |
124 | right = hid_tmff_scale_u16(effect->u.rumble.strong_magnitude, | |
125 | ff_field->logical_minimum, | |
126 | ff_field->logical_maximum); | |
127 | ||
128 | dbg_hid("(left,right)=(%08x, %08x)\n", left, right); | |
129 | ff_field->value[0] = left; | |
130 | ff_field->value[1] = right; | |
131 | usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); | |
132 | break; | |
133 | } | |
dc76c912 AH |
134 | return 0; |
135 | } | |
1da177e4 LT |
136 | |
137 | int hid_tmff_init(struct hid_device *hid) | |
138 | { | |
dc76c912 | 139 | struct tmff_device *tmff; |
1da177e4 LT |
140 | struct list_head *pos; |
141 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
c5b7c7c3 | 142 | struct input_dev *input_dev = hidinput->input; |
b27c9590 | 143 | const signed short *ff_bits = ff_joystick; |
dc76c912 | 144 | int error; |
b27c9590 | 145 | int i; |
1da177e4 | 146 | |
dc76c912 AH |
147 | tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); |
148 | if (!tmff) | |
1da177e4 LT |
149 | return -ENOMEM; |
150 | ||
1da177e4 | 151 | /* Find the report to use */ |
b27c9590 | 152 | list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) { |
1da177e4 LT |
153 | struct hid_report *report = (struct hid_report *)pos; |
154 | int fieldnum; | |
155 | ||
156 | for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { | |
157 | struct hid_field *field = report->field[fieldnum]; | |
158 | ||
159 | if (field->maxusage <= 0) | |
160 | continue; | |
161 | ||
162 | switch (field->usage[0].hid) { | |
b27c9590 DT |
163 | case THRUSTMASTER_USAGE_FF: |
164 | if (field->report_count < 2) { | |
165 | warn("ignoring FF field with report_count < 2"); | |
166 | continue; | |
167 | } | |
1da177e4 | 168 | |
b27c9590 DT |
169 | if (field->logical_maximum == field->logical_minimum) { |
170 | warn("ignoring FF field with logical_maximum == logical_minimum"); | |
171 | continue; | |
172 | } | |
1da177e4 | 173 | |
b27c9590 DT |
174 | if (tmff->report && tmff->report != report) { |
175 | warn("ignoring FF field in other report"); | |
176 | continue; | |
177 | } | |
1da177e4 | 178 | |
b27c9590 DT |
179 | if (tmff->ff_field && tmff->ff_field != field) { |
180 | warn("ignoring duplicate FF field"); | |
181 | continue; | |
182 | } | |
183 | ||
184 | tmff->report = report; | |
185 | tmff->ff_field = field; | |
186 | ||
187 | for (i = 0; i < ARRAY_SIZE(devices); i++) { | |
188 | if (input_dev->id.vendor == devices[i].idVendor && | |
189 | input_dev->id.product == devices[i].idProduct) { | |
190 | ff_bits = devices[i].ff; | |
191 | break; | |
1da177e4 | 192 | } |
b27c9590 | 193 | } |
1da177e4 | 194 | |
b27c9590 DT |
195 | for (i = 0; ff_bits[i] >= 0; i++) |
196 | set_bit(ff_bits[i], input_dev->ffbit); | |
1da177e4 | 197 | |
b27c9590 | 198 | break; |
1da177e4 | 199 | |
b27c9590 DT |
200 | default: |
201 | warn("ignoring unknown output usage %08x", field->usage[0].hid); | |
202 | continue; | |
1da177e4 | 203 | } |
1da177e4 LT |
204 | } |
205 | } | |
206 | ||
b27c9590 DT |
207 | if (!tmff->report) { |
208 | err("cant find FF field in output reports\n"); | |
209 | error = -ENODEV; | |
210 | goto fail; | |
1da177e4 LT |
211 | } |
212 | ||
b27c9590 DT |
213 | error = input_ff_create_memless(input_dev, tmff, hid_tmff_play); |
214 | if (error) | |
215 | goto fail; | |
1da177e4 | 216 | |
b27c9590 | 217 | info("Force feedback for ThrustMaster devices by Zinx Verituse <zinx@epicsol.org>"); |
1da177e4 | 218 | return 0; |
b27c9590 DT |
219 | |
220 | fail: | |
221 | kfree(tmff); | |
222 | return error; | |
1da177e4 LT |
223 | } |
224 |