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authorJiri Slaby <jirislaby@gmail.com>2008-09-18 06:23:31 -0400
committerJiri Kosina <jkosina@suse.cz>2008-10-14 17:51:00 -0400
commit10e41a711e55f485709b4ca157e587cf36ef5a69 (patch)
tree5e7e31db5f0127370ab2cc7250b16061ec7fc3cb /drivers/hid/hid-tmff.c
parent5f022298aab58ddff9bccdb28b82a59109789da9 (diff)
HID: move thrustmaster FF processing
Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-tmff.c')
-rw-r--r--drivers/hid/hid-tmff.c267
1 files changed, 267 insertions, 0 deletions
diff --git a/drivers/hid/hid-tmff.c b/drivers/hid/hid-tmff.c
new file mode 100644
index 000000000000..be7ebe286a16
--- /dev/null
+++ b/drivers/hid/hid-tmff.c
@@ -0,0 +1,267 @@
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/usb.h>
33
34#include "hid-ids.h"
35
36#include "usbhid/usbhid.h"
37
38/* Usages for thrustmaster devices I know about */
39#define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb)
40
41static const signed short ff_rumble[] = {
42 FF_RUMBLE,
43 -1
44};
45
46static const signed short ff_joystick[] = {
47 FF_CONSTANT,
48 -1
49};
50
51struct tmff_device {
52 struct hid_report *report;
53 struct hid_field *ff_field;
54};
55
56/* Changes values from 0 to 0xffff into values from minimum to maximum */
57static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum)
58{
59 int ret;
60
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}
68
69/* Changes values from -0x80 to 0x7f into values from minimum to maximum */
70static inline int tmff_scale_s8(int in, int minimum, int maximum)
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
82static int tmff_play(struct input_dev *dev, void *data,
83 struct ff_effect *effect)
84{
85 struct hid_device *hid = input_get_drvdata(dev);
86 struct tmff_device *tmff = data;
87 struct hid_field *ff_field = tmff->ff_field;
88 int x, y;
89 int left, right; /* Rumbling */
90
91 switch (effect->type) {
92 case FF_CONSTANT:
93 x = tmff_scale_s8(effect->u.ramp.start_level,
94 ff_field->logical_minimum,
95 ff_field->logical_maximum);
96 y = tmff_scale_s8(effect->u.ramp.end_level,
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:
107 left = tmff_scale_u16(effect->u.rumble.weak_magnitude,
108 ff_field->logical_minimum,
109 ff_field->logical_maximum);
110 right = tmff_scale_u16(effect->u.rumble.strong_magnitude,
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 }
120 return 0;
121}
122
123static int tmff_init(struct hid_device *hid, const signed short *ff_bits)
124{
125 struct tmff_device *tmff;
126 struct hid_report *report;
127 struct list_head *report_list;
128 struct hid_input *hidinput = list_entry(hid->inputs.next,
129 struct hid_input, list);
130 struct input_dev *input_dev = hidinput->input;
131 int error;
132 int i;
133
134 tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
135 if (!tmff)
136 return -ENOMEM;
137
138 /* Find the report to use */
139 report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
140 list_for_each_entry(report, report_list, list) {
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) {
150 case THRUSTMASTER_USAGE_FF:
151 if (field->report_count < 2) {
152 warn("ignoring FF field with "
153 "report_count < 2");
154 continue;
155 }
156
157 if (field->logical_maximum ==
158 field->logical_minimum) {
159 warn("ignoring FF field with "
160 "logical_maximum == "
161 "logical_minimum");
162 continue;
163 }
164
165 if (tmff->report && tmff->report != report) {
166 warn("ignoring FF field in other "
167 "report");
168 continue;
169 }
170
171 if (tmff->ff_field && tmff->ff_field != field) {
172 warn("ignoring duplicate FF field");
173 continue;
174 }
175
176 tmff->report = report;
177 tmff->ff_field = field;
178
179 for (i = 0; ff_bits[i] >= 0; i++)
180 set_bit(ff_bits[i], input_dev->ffbit);
181
182 break;
183
184 default:
185 warn("ignoring unknown output usage %08x",
186 field->usage[0].hid);
187 continue;
188 }
189 }
190 }
191
192 if (!tmff->report) {
193 err("cant find FF field in output reports\n");
194 error = -ENODEV;
195 goto fail;
196 }
197
198 error = input_ff_create_memless(input_dev, tmff, tmff_play);
199 if (error)
200 goto fail;
201
202 info("Force feedback for ThrustMaster devices by Zinx Verituse "
203 "<zinx@epicsol.org>");
204 return 0;
205
206fail:
207 kfree(tmff);
208 return error;
209}
210
211static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id)
212{
213 int ret;
214
215 ret = hid_parse(hdev);
216 if (ret) {
217 dev_err(&hdev->dev, "parse failed\n");
218 goto err;
219 }
220
221 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
222 if (ret) {
223 dev_err(&hdev->dev, "hw start failed\n");
224 goto err;
225 }
226
227 tmff_init(hdev, (void *)id->driver_data);
228
229 return 0;
230err:
231 return ret;
232}
233
234static const struct hid_device_id tm_devices[] = {
235 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300),
236 .driver_data = (unsigned long)ff_rumble },
237 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304),
238 .driver_data = (unsigned long)ff_rumble },
239 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */
240 .driver_data = (unsigned long)ff_rumble },
241 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */
242 .driver_data = (unsigned long)ff_joystick },
243 { }
244};
245MODULE_DEVICE_TABLE(hid, tm_devices);
246
247static struct hid_driver tm_driver = {
248 .name = "thrustmaster",
249 .id_table = tm_devices,
250 .probe = tm_probe,
251};
252
253static int tm_init(void)
254{
255 return hid_register_driver(&tm_driver);
256}
257
258static void tm_exit(void)
259{
260 hid_unregister_driver(&tm_driver);
261}
262
263module_init(tm_init);
264module_exit(tm_exit);
265MODULE_LICENSE("GPL");
266
267HID_COMPAT_LOAD_DRIVER(thrustmaster);