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");