Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

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

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us