media: tegra: enable a clock for VIP in APB MISC register
[linux-2.6.git] / 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
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                                         hid_warn(hid, "ignoring FF field with report_count < 2\n");
155                                         continue;
156                                 }
157
158                                 if (field->logical_maximum ==
159                                                 field->logical_minimum) {
160                                         hid_warn(hid, "ignoring FF field with logical_maximum == logical_minimum\n");
161                                         continue;
162                                 }
163
164                                 if (tmff->report && tmff->report != report) {
165                                         hid_warn(hid, "ignoring FF field in other report\n");
166                                         continue;
167                                 }
168
169                                 if (tmff->ff_field && tmff->ff_field != field) {
170                                         hid_warn(hid, "ignoring duplicate FF field\n");
171                                         continue;
172                                 }
173
174                                 tmff->report = report;
175                                 tmff->ff_field = field;
176
177                                 for (i = 0; ff_bits[i] >= 0; i++)
178                                         set_bit(ff_bits[i], input_dev->ffbit);
179
180                                 break;
181
182                         default:
183                                 hid_warn(hid, "ignoring unknown output usage %08x\n",
184                                          field->usage[0].hid);
185                                 continue;
186                         }
187                 }
188         }
189
190         if (!tmff->report) {
191                 hid_err(hid, "can't find FF field in output reports\n");
192                 error = -ENODEV;
193                 goto fail;
194         }
195
196         error = input_ff_create_memless(input_dev, tmff, tmff_play);
197         if (error)
198                 goto fail;
199
200         hid_info(hid, "force feedback for ThrustMaster devices by Zinx Verituse <zinx@epicsol.org>\n");
201         return 0;
202
203 fail:
204         kfree(tmff);
205         return error;
206 }
207 #else
208 static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits)
209 {
210         return 0;
211 }
212 #endif
213
214 static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id)
215 {
216         int ret;
217
218         ret = hid_parse(hdev);
219         if (ret) {
220                 hid_err(hdev, "parse failed\n");
221                 goto err;
222         }
223
224         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
225         if (ret) {
226                 hid_err(hdev, "hw start failed\n");
227                 goto err;
228         }
229
230         tmff_init(hdev, (void *)id->driver_data);
231
232         return 0;
233 err:
234         return ret;
235 }
236
237 static const struct hid_device_id tm_devices[] = {
238         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300),
239                 .driver_data = (unsigned long)ff_rumble },
240         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304),   /* FireStorm Dual Power 2 (and 3) */
241                 .driver_data = (unsigned long)ff_rumble },
242         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323),   /* Dual Trigger 3-in-1 (PC Mode) */
243                 .driver_data = (unsigned long)ff_rumble },
244         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324),   /* Dual Trigger 3-in-1 (PS3 Mode) */
245                 .driver_data = (unsigned long)ff_rumble },
246         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651),   /* FGT Rumble Force Wheel */
247                 .driver_data = (unsigned long)ff_rumble },
248         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653),   /* RGT Force Feedback CLUTCH Raging Wheel */
249                 .driver_data = (unsigned long)ff_joystick },
250         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654),   /* FGT Force Feedback Wheel */
251                 .driver_data = (unsigned long)ff_joystick },
252         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a),   /* F430 Force Feedback Wheel */
253                 .driver_data = (unsigned long)ff_joystick },
254         { }
255 };
256 MODULE_DEVICE_TABLE(hid, tm_devices);
257
258 static struct hid_driver tm_driver = {
259         .name = "thrustmaster",
260         .id_table = tm_devices,
261         .probe = tm_probe,
262 };
263
264 static int __init tm_init(void)
265 {
266         return hid_register_driver(&tm_driver);
267 }
268
269 static void __exit tm_exit(void)
270 {
271         hid_unregister_driver(&tm_driver);
272 }
273
274 module_init(tm_init);
275 module_exit(tm_exit);
276 MODULE_LICENSE("GPL");