drivers/input/joystick/iforce/iforce-main.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
   4  *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
   5  *
   6  *  USB/RS232 I-Force joysticks and wheels.
   7  */
   8
   9 #include <asm/unaligned.h>
  10 #include "iforce.h"
  11
  12 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>, Johann Deneux <johann.deneux@gmail.com>");
  13 MODULE_DESCRIPTION("Core I-Force joysticks and wheels driver");
  14 MODULE_LICENSE("GPL");
  15
  16 static signed short btn_joystick[] =
  17 { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE,
  18   BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_A,
  19   BTN_B, BTN_C, BTN_DEAD, -1 };
  20
  21 static signed short btn_joystick_avb[] =
  22 { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE,
  23   BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_DEAD, -1 };
  24
  25 static signed short btn_wheel[] =
  26 { BTN_GEAR_DOWN, BTN_GEAR_UP, BTN_BASE, BTN_BASE2, BTN_BASE3,
  27   BTN_BASE4, BTN_BASE5, BTN_BASE6, -1 };
  28
  29 static signed short abs_joystick[] =
  30 { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, -1 };
  31
  32 static signed short abs_joystick_rudder[] =
  33 { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_HAT0X, ABS_HAT0Y, -1 };
  34
  35 static signed short abs_avb_pegasus[] =
  36 { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_HAT0X, ABS_HAT0Y,
  37   ABS_HAT1X, ABS_HAT1Y, -1 };
  38
  39 static signed short abs_wheel[] =
  40 { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, -1 };
  41
  42 static signed short ff_iforce[] =
  43 { FF_PERIODIC, FF_CONSTANT, FF_SPRING, FF_DAMPER,
  44   FF_SQUARE, FF_TRIANGLE, FF_SINE, FF_SAW_UP, FF_SAW_DOWN, FF_GAIN,
  45   FF_AUTOCENTER, -1 };
  46
  47 static struct iforce_device iforce_device[] = {
  48         { 0x044f, 0xa01c, "Thrustmaster Motor Sport GT",                btn_wheel, abs_wheel, ff_iforce },
  49         { 0x046d, 0xc281, "Logitech WingMan Force",                     btn_joystick, abs_joystick, ff_iforce },
  50         { 0x046d, 0xc291, "Logitech WingMan Formula Force",             btn_wheel, abs_wheel, ff_iforce },
  51         { 0x05ef, 0x020a, "AVB Top Shot Pegasus",                       btn_joystick_avb, abs_avb_pegasus, ff_iforce },
  52         { 0x05ef, 0x8884, "AVB Mag Turbo Force",                        btn_wheel, abs_wheel, ff_iforce },
  53         { 0x05ef, 0x8888, "AVB Top Shot Force Feedback Racing Wheel",   btn_wheel, abs_wheel, ff_iforce }, //?
  54         { 0x061c, 0xc0a4, "ACT LABS Force RS",                          btn_wheel, abs_wheel, ff_iforce }, //?
  55         { 0x061c, 0xc084, "ACT LABS Force RS",                          btn_wheel, abs_wheel, ff_iforce },
  56         { 0x06a3, 0xff04, "Saitek R440 Force Wheel",                    btn_wheel, abs_wheel, ff_iforce }, //?
  57         { 0x06f8, 0x0001, "Guillemot Race Leader Force Feedback",       btn_wheel, abs_wheel, ff_iforce }, //?
  58         { 0x06f8, 0x0001, "Guillemot Jet Leader Force Feedback",        btn_joystick, abs_joystick_rudder, ff_iforce },
  59         { 0x06f8, 0x0004, "Guillemot Force Feedback Racing Wheel",      btn_wheel, abs_wheel, ff_iforce }, //?
  60         { 0x06f8, 0xa302, "Guillemot Jet Leader 3D",                    btn_joystick, abs_joystick, ff_iforce }, //?
  61         { 0x06d6, 0x29bc, "Trust Force Feedback Race Master",           btn_wheel, abs_wheel, ff_iforce },
  62         { 0x0000, 0x0000, "Unknown I-Force Device [%04x:%04x]",         btn_joystick, abs_joystick, ff_iforce }
  63 };
  64
  65 static int iforce_playback(struct input_dev *dev, int effect_id, int value)
  66 {
  67         struct iforce *iforce = input_get_drvdata(dev);
  68         struct iforce_core_effect *core_effect = &iforce->core_effects[effect_id];
  69
  70         if (value > 0)
  71                 set_bit(FF_CORE_SHOULD_PLAY, core_effect->flags);
  72         else
  73                 clear_bit(FF_CORE_SHOULD_PLAY, core_effect->flags);
  74
  75         iforce_control_playback(iforce, effect_id, value);
  76         return 0;
  77 }
  78
  79 static void iforce_set_gain(struct input_dev *dev, u16 gain)
  80 {
  81         struct iforce *iforce = input_get_drvdata(dev);
  82         unsigned char data[3];
  83
  84         data[0] = gain >> 9;
  85         iforce_send_packet(iforce, FF_CMD_GAIN, data);
  86 }
  87
  88 static void iforce_set_autocenter(struct input_dev *dev, u16 magnitude)
  89 {
  90         struct iforce *iforce = input_get_drvdata(dev);
  91         unsigned char data[3];
  92
  93         data[0] = 0x03;
  94         data[1] = magnitude >> 9;
  95         iforce_send_packet(iforce, FF_CMD_AUTOCENTER, data);
  96
  97         data[0] = 0x04;
  98         data[1] = 0x01;
  99         iforce_send_packet(iforce, FF_CMD_AUTOCENTER, data);
 100 }
 101
 102 /*
 103  * Function called when an ioctl is performed on the event dev entry.
 104  * It uploads an effect to the device
 105  */
 106 static int iforce_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old)
 107 {
 108         struct iforce *iforce = input_get_drvdata(dev);
 109         struct iforce_core_effect *core_effect = &iforce->core_effects[effect->id];
 110         int ret;
 111
 112         if (__test_and_set_bit(FF_CORE_IS_USED, core_effect->flags)) {
 113                 /* Check the effect is not already being updated */
 114                 if (test_bit(FF_CORE_UPDATE, core_effect->flags))
 115                         return -EAGAIN;
 116         }
 117
 118 /*
 119  * Upload the effect
 120  */
 121         switch (effect->type) {
 122         case FF_PERIODIC:
 123                 ret = iforce_upload_periodic(iforce, effect, old);
 124                 break;
 125
 126         case FF_CONSTANT:
 127                 ret = iforce_upload_constant(iforce, effect, old);
 128                 break;
 129
 130         case FF_SPRING:
 131         case FF_DAMPER:
 132                 ret = iforce_upload_condition(iforce, effect, old);
 133                 break;
 134
 135         default:
 136                 return -EINVAL;
 137         }
 138
 139         if (ret == 0) {
 140                 /* A packet was sent, forbid new updates until we are notified
 141                  * that the packet was updated
 142                  */
 143                 set_bit(FF_CORE_UPDATE, core_effect->flags);
 144         }
 145         return ret;
 146 }
 147
 148 /*
 149  * Erases an effect: it frees the effect id and mark as unused the memory
 150  * allocated for the parameters
 151  */
 152 static int iforce_erase_effect(struct input_dev *dev, int effect_id)
 153 {
 154         struct iforce *iforce = input_get_drvdata(dev);
 155         struct iforce_core_effect *core_effect = &iforce->core_effects[effect_id];
 156         int err = 0;
 157
 158         if (test_bit(FF_MOD1_IS_USED, core_effect->flags))
 159                 err = release_resource(&core_effect->mod1_chunk);
 160
 161         if (!err && test_bit(FF_MOD2_IS_USED, core_effect->flags))
 162                 err = release_resource(&core_effect->mod2_chunk);
 163
 164         /* TODO: remember to change that if more FF_MOD* bits are added */
 165         core_effect->flags[0] = 0;
 166
 167         return err;
 168 }
 169
 170 static int iforce_open(struct input_dev *dev)
 171 {
 172         struct iforce *iforce = input_get_drvdata(dev);
 173
 174         iforce->xport_ops->start_io(iforce);
 175
 176         if (test_bit(EV_FF, dev->evbit)) {
 177                 /* Enable force feedback */
 178                 iforce_send_packet(iforce, FF_CMD_ENABLE, "\004");
 179         }
 180
 181         return 0;
 182 }
 183
 184 static void iforce_close(struct input_dev *dev)
 185 {
 186         struct iforce *iforce = input_get_drvdata(dev);
 187         int i;
 188
 189         if (test_bit(EV_FF, dev->evbit)) {
 190                 /* Check: no effects should be present in memory */
 191                 for (i = 0; i < dev->ff->max_effects; i++) {
 192                         if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags)) {
 193                                 dev_warn(&dev->dev,
 194                                         "%s: Device still owns effects\n",
 195                                         __func__);
 196                                 break;
 197                         }
 198                 }
 199
 200                 /* Disable force feedback playback */
 201                 iforce_send_packet(iforce, FF_CMD_ENABLE, "\001");
 202                 /* Wait for the command to complete */
 203                 wait_event_interruptible(iforce->wait,
 204                         !test_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags));
 205         }
 206
 207         iforce->xport_ops->stop_io(iforce);
 208 }
 209
 210 int iforce_init_device(struct device *parent, u16 bustype,
 211                        struct iforce *iforce)
 212 {
 213         struct input_dev *input_dev;
 214         struct ff_device *ff;
 215         u8 c[] = "CEOV";
 216         u8 buf[IFORCE_MAX_LENGTH];
 217         size_t len;
 218         int i, error;
 219         int ff_effects = 0;
 220
 221         input_dev = input_allocate_device();
 222         if (!input_dev)
 223                 return -ENOMEM;
 224
 225         init_waitqueue_head(&iforce->wait);
 226         spin_lock_init(&iforce->xmit_lock);
 227         mutex_init(&iforce->mem_mutex);
 228         iforce->xmit.buf = iforce->xmit_data;
 229         iforce->dev = input_dev;
 230
 231 /*
 232  * Input device fields.
 233  */
 234
 235         input_dev->id.bustype = bustype;
 236         input_dev->dev.parent = parent;
 237
 238         input_set_drvdata(input_dev, iforce);
 239
 240         input_dev->name = "Unknown I-Force device";
 241         input_dev->open = iforce_open;
 242         input_dev->close = iforce_close;
 243
 244 /*
 245  * On-device memory allocation.
 246  */
 247
 248         iforce->device_memory.name = "I-Force device effect memory";
 249         iforce->device_memory.start = 0;
 250         iforce->device_memory.end = 200;
 251         iforce->device_memory.flags = IORESOURCE_MEM;
 252         iforce->device_memory.parent = NULL;
 253         iforce->device_memory.child = NULL;
 254         iforce->device_memory.sibling = NULL;
 255
 256 /*
 257  * Wait until device ready - until it sends its first response.
 258  */
 259
 260         for (i = 0; i < 20; i++)
 261                 if (!iforce_get_id_packet(iforce, 'O', buf, &len))
 262                         break;
 263
 264         if (i == 20) { /* 5 seconds */
 265                 dev_err(&input_dev->dev,
 266                         "Timeout waiting for response from device.\n");
 267                 error = -ENODEV;
 268                 goto fail;
 269         }
 270
 271 /*
 272  * Get device info.
 273  */
 274
 275         if (!iforce_get_id_packet(iforce, 'M', buf, &len) || len < 3)
 276                 input_dev->id.vendor = get_unaligned_le16(buf + 1);
 277         else
 278                 dev_warn(&iforce->dev->dev, "Device does not respond to id packet M\n");
 279
 280         if (!iforce_get_id_packet(iforce, 'P', buf, &len) || len < 3)
 281                 input_dev->id.product = get_unaligned_le16(buf + 1);
 282         else
 283                 dev_warn(&iforce->dev->dev, "Device does not respond to id packet P\n");
 284
 285         if (!iforce_get_id_packet(iforce, 'B', buf, &len) || len < 3)
 286                 iforce->device_memory.end = get_unaligned_le16(buf + 1);
 287         else
 288                 dev_warn(&iforce->dev->dev, "Device does not respond to id packet B\n");
 289
 290         if (!iforce_get_id_packet(iforce, 'N', buf, &len) || len < 2)
 291                 ff_effects = buf[1];
 292         else
 293                 dev_warn(&iforce->dev->dev, "Device does not respond to id packet N\n");
 294
 295         /* Check if the device can store more effects than the driver can really handle */
 296         if (ff_effects > IFORCE_EFFECTS_MAX) {
 297                 dev_warn(&iforce->dev->dev, "Limiting number of effects to %d (device reports %d)\n",
 298                        IFORCE_EFFECTS_MAX, ff_effects);
 299                 ff_effects = IFORCE_EFFECTS_MAX;
 300         }
 301
 302 /*
 303  * Display additional info.
 304  */
 305
 306         for (i = 0; c[i]; i++)
 307                 if (!iforce_get_id_packet(iforce, c[i], buf, &len))
 308                         iforce_dump_packet(iforce, "info",
 309                                            (FF_CMD_QUERY & 0xff00) | len, buf);
 310
 311 /*
 312  * Disable spring, enable force feedback.
 313  */
 314         iforce_set_autocenter(input_dev, 0);
 315
 316 /*
 317  * Find appropriate device entry
 318  */
 319
 320         for (i = 0; iforce_device[i].idvendor; i++)
 321                 if (iforce_device[i].idvendor == input_dev->id.vendor &&
 322                     iforce_device[i].idproduct == input_dev->id.product)
 323                         break;
 324
 325         iforce->type = iforce_device + i;
 326         input_dev->name = iforce->type->name;
 327
 328 /*
 329  * Set input device bitfields and ranges.
 330  */
 331
 332         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) |
 333                 BIT_MASK(EV_FF_STATUS);
 334
 335         for (i = 0; iforce->type->btn[i] >= 0; i++)
 336                 set_bit(iforce->type->btn[i], input_dev->keybit);
 337
 338         for (i = 0; iforce->type->abs[i] >= 0; i++) {
 339
 340                 signed short t = iforce->type->abs[i];
 341
 342                 switch (t) {
 343                 case ABS_X:
 344                 case ABS_Y:
 345                 case ABS_WHEEL:
 346                         input_set_abs_params(input_dev, t, -1920, 1920, 16, 128);
 347                         set_bit(t, input_dev->ffbit);
 348                         break;
 349
 350                 case ABS_THROTTLE:
 351                 case ABS_GAS:
 352                 case ABS_BRAKE:
 353                         input_set_abs_params(input_dev, t, 0, 255, 0, 0);
 354                         break;
 355
 356                 case ABS_RUDDER:
 357                         input_set_abs_params(input_dev, t, -128, 127, 0, 0);
 358                         break;
 359
 360                 case ABS_HAT0X:
 361                 case ABS_HAT0Y:
 362                 case ABS_HAT1X:
 363                 case ABS_HAT1Y:
 364                         input_set_abs_params(input_dev, t, -1, 1, 0, 0);
 365                         break;
 366                 }
 367         }
 368
 369         if (ff_effects) {
 370
 371                 for (i = 0; iforce->type->ff[i] >= 0; i++)
 372                         set_bit(iforce->type->ff[i], input_dev->ffbit);
 373
 374                 error = input_ff_create(input_dev, ff_effects);
 375                 if (error)
 376                         goto fail;
 377
 378                 ff = input_dev->ff;
 379                 ff->upload = iforce_upload_effect;
 380                 ff->erase = iforce_erase_effect;
 381                 ff->set_gain = iforce_set_gain;
 382                 ff->set_autocenter = iforce_set_autocenter;
 383                 ff->playback = iforce_playback;
 384         }
 385 /*
 386  * Register input device.
 387  */
 388
 389         error = input_register_device(iforce->dev);
 390         if (error)
 391                 goto fail;
 392
 393         return 0;
 394
 395  fail:  input_free_device(input_dev);
 396         return error;
 397 }
 398 EXPORT_SYMBOL(iforce_init_device);