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Viewing changes to drivers/hid/hid-tmff.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/hid/hid-tmff.c
 
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
#include <linux/module.h>
 
35
 
 
36
#include "hid-ids.h"
 
37
 
 
38
static const signed short ff_rumble[] = {
 
39
        FF_RUMBLE,
 
40
        -1
 
41
};
 
42
 
 
43
static const signed short ff_joystick[] = {
 
44
        FF_CONSTANT,
 
45
        -1
 
46
};
 
47
 
 
48
#ifdef CONFIG_THRUSTMASTER_FF
 
49
#include "usbhid/usbhid.h"
 
50
 
 
51
/* Usages for thrustmaster devices I know about */
 
52
#define THRUSTMASTER_USAGE_FF   (HID_UP_GENDESK | 0xbb)
 
53
 
 
54
struct tmff_device {
 
55
        struct hid_report *report;
 
56
        struct hid_field *ff_field;
 
57
};
 
58
 
 
59
/* Changes values from 0 to 0xffff into values from minimum to maximum */
 
60
static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum)
 
61
{
 
62
        int ret;
 
63
 
 
64
        ret = (in * (maximum - minimum) / 0xffff) + minimum;
 
65
        if (ret < minimum)
 
66
                return minimum;
 
67
        if (ret > maximum)
 
68
                return maximum;
 
69
        return ret;
 
70
}
 
71
 
 
72
/* Changes values from -0x80 to 0x7f into values from minimum to maximum */
 
73
static inline int tmff_scale_s8(int in, int minimum, int maximum)
 
74
{
 
75
        int ret;
 
76
 
 
77
        ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum;
 
78
        if (ret < minimum)
 
79
                return minimum;
 
80
        if (ret > maximum)
 
81
                return maximum;
 
82
        return ret;
 
83
}
 
84
 
 
85
static int tmff_play(struct input_dev *dev, void *data,
 
86
                struct ff_effect *effect)
 
87
{
 
88
        struct hid_device *hid = input_get_drvdata(dev);
 
89
        struct tmff_device *tmff = data;
 
90
        struct hid_field *ff_field = tmff->ff_field;
 
91
        int x, y;
 
92
        int left, right;        /* Rumbling */
 
93
 
 
94
        switch (effect->type) {
 
95
        case FF_CONSTANT:
 
96
                x = tmff_scale_s8(effect->u.ramp.start_level,
 
97
                                        ff_field->logical_minimum,
 
98
                                        ff_field->logical_maximum);
 
99
                y = tmff_scale_s8(effect->u.ramp.end_level,
 
100
                                        ff_field->logical_minimum,
 
101
                                        ff_field->logical_maximum);
 
102
 
 
103
                dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
 
104
                ff_field->value[0] = x;
 
105
                ff_field->value[1] = y;
 
106
                usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);
 
107
                break;
 
108
 
 
109
        case FF_RUMBLE:
 
110
                left = tmff_scale_u16(effect->u.rumble.weak_magnitude,
 
111
                                        ff_field->logical_minimum,
 
112
                                        ff_field->logical_maximum);
 
113
                right = tmff_scale_u16(effect->u.rumble.strong_magnitude,
 
114
                                        ff_field->logical_minimum,
 
115
                                        ff_field->logical_maximum);
 
116
 
 
117
                dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
 
118
                ff_field->value[0] = left;
 
119
                ff_field->value[1] = right;
 
120
                usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);
 
121
                break;
 
122
        }
 
123
        return 0;
 
124
}
 
125
 
 
126
static int tmff_init(struct hid_device *hid, const signed short *ff_bits)
 
127
{
 
128
        struct tmff_device *tmff;
 
129
        struct hid_report *report;
 
130
        struct list_head *report_list;
 
131
        struct hid_input *hidinput = list_entry(hid->inputs.next,
 
132
                                                        struct hid_input, list);
 
133
        struct input_dev *input_dev = hidinput->input;
 
134
        int error;
 
135
        int i;
 
136
 
 
137
        tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
 
138
        if (!tmff)
 
139
                return -ENOMEM;
 
140
 
 
141
        /* Find the report to use */
 
142
        report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
 
143
        list_for_each_entry(report, report_list, list) {
 
144
                int fieldnum;
 
145
 
 
146
                for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) {
 
147
                        struct hid_field *field = report->field[fieldnum];
 
148
 
 
149
                        if (field->maxusage <= 0)
 
150
                                continue;
 
151
 
 
152
                        switch (field->usage[0].hid) {
 
153
                        case THRUSTMASTER_USAGE_FF:
 
154
                                if (field->report_count < 2) {
 
155
                                        hid_warn(hid, "ignoring FF field with report_count < 2\n");
 
156
                                        continue;
 
157
                                }
 
158
 
 
159
                                if (field->logical_maximum ==
 
160
                                                field->logical_minimum) {
 
161
                                        hid_warn(hid, "ignoring FF field with logical_maximum == logical_minimum\n");
 
162
                                        continue;
 
163
                                }
 
164
 
 
165
                                if (tmff->report && tmff->report != report) {
 
166
                                        hid_warn(hid, "ignoring FF field in other report\n");
 
167
                                        continue;
 
168
                                }
 
169
 
 
170
                                if (tmff->ff_field && tmff->ff_field != field) {
 
171
                                        hid_warn(hid, "ignoring duplicate FF field\n");
 
172
                                        continue;
 
173
                                }
 
174
 
 
175
                                tmff->report = report;
 
176
                                tmff->ff_field = field;
 
177
 
 
178
                                for (i = 0; ff_bits[i] >= 0; i++)
 
179
                                        set_bit(ff_bits[i], input_dev->ffbit);
 
180
 
 
181
                                break;
 
182
 
 
183
                        default:
 
184
                                hid_warn(hid, "ignoring unknown output usage %08x\n",
 
185
                                         field->usage[0].hid);
 
186
                                continue;
 
187
                        }
 
188
                }
 
189
        }
 
190
 
 
191
        if (!tmff->report) {
 
192
                hid_err(hid, "can't find FF field in output reports\n");
 
193
                error = -ENODEV;
 
194
                goto fail;
 
195
        }
 
196
 
 
197
        error = input_ff_create_memless(input_dev, tmff, tmff_play);
 
198
        if (error)
 
199
                goto fail;
 
200
 
 
201
        hid_info(hid, "force feedback for ThrustMaster devices by Zinx Verituse <zinx@epicsol.org>\n");
 
202
        return 0;
 
203
 
 
204
fail:
 
205
        kfree(tmff);
 
206
        return error;
 
207
}
 
208
#else
 
209
static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits)
 
210
{
 
211
        return 0;
 
212
}
 
213
#endif
 
214
 
 
215
static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id)
 
216
{
 
217
        int ret;
 
218
 
 
219
        ret = hid_parse(hdev);
 
220
        if (ret) {
 
221
                hid_err(hdev, "parse failed\n");
 
222
                goto err;
 
223
        }
 
224
 
 
225
        ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
 
226
        if (ret) {
 
227
                hid_err(hdev, "hw start failed\n");
 
228
                goto err;
 
229
        }
 
230
 
 
231
        tmff_init(hdev, (void *)id->driver_data);
 
232
 
 
233
        return 0;
 
234
err:
 
235
        return ret;
 
236
}
 
237
 
 
238
static const struct hid_device_id tm_devices[] = {
 
239
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300),
 
240
                .driver_data = (unsigned long)ff_rumble },
 
241
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304),   /* FireStorm Dual Power 2 (and 3) */
 
242
                .driver_data = (unsigned long)ff_rumble },
 
243
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323),   /* Dual Trigger 3-in-1 (PC Mode) */
 
244
                .driver_data = (unsigned long)ff_rumble },
 
245
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324),   /* Dual Trigger 3-in-1 (PS3 Mode) */
 
246
                .driver_data = (unsigned long)ff_rumble },
 
247
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651),   /* FGT Rumble Force Wheel */
 
248
                .driver_data = (unsigned long)ff_rumble },
 
249
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653),   /* RGT Force Feedback CLUTCH Raging Wheel */
 
250
                .driver_data = (unsigned long)ff_joystick },
 
251
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654),   /* FGT Force Feedback Wheel */
 
252
                .driver_data = (unsigned long)ff_joystick },
 
253
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a),   /* F430 Force Feedback Wheel */
 
254
                .driver_data = (unsigned long)ff_joystick },
 
255
        { }
 
256
};
 
257
MODULE_DEVICE_TABLE(hid, tm_devices);
 
258
 
 
259
static struct hid_driver tm_driver = {
 
260
        .name = "thrustmaster",
 
261
        .id_table = tm_devices,
 
262
        .probe = tm_probe,
 
263
};
 
264
 
 
265
static int __init tm_init(void)
 
266
{
 
267
        return hid_register_driver(&tm_driver);
 
268
}
 
269
 
 
270
static void __exit tm_exit(void)
 
271
{
 
272
        hid_unregister_driver(&tm_driver);
 
273
}
 
274
 
 
275
module_init(tm_init);
 
276
module_exit(tm_exit);
 
277
MODULE_LICENSE("GPL");