Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Force feedback driver for USB HID PID compliant devices |
| 3 | * |
| 4 | * Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | /* #define DEBUG */ |
| 24 | |
| 25 | #define debug(format, arg...) pr_debug("hid-pidff: " format "\n" , ## arg) |
| 26 | |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 27 | #include <linux/input.h> |
| 28 | #include <linux/usb.h> |
| 29 | |
Jiri Kosina | dde5845 | 2006-12-08 18:40:44 +0100 | [diff] [blame] | 30 | #include <linux/hid.h> |
| 31 | |
| 32 | #include "usbhid.h" |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 33 | |
| 34 | #define PID_EFFECTS_MAX 64 |
| 35 | |
| 36 | /* Report usage table used to put reports into an array */ |
| 37 | |
| 38 | #define PID_SET_EFFECT 0 |
| 39 | #define PID_EFFECT_OPERATION 1 |
| 40 | #define PID_DEVICE_GAIN 2 |
| 41 | #define PID_POOL 3 |
| 42 | #define PID_BLOCK_LOAD 4 |
| 43 | #define PID_BLOCK_FREE 5 |
| 44 | #define PID_DEVICE_CONTROL 6 |
| 45 | #define PID_CREATE_NEW_EFFECT 7 |
| 46 | |
| 47 | #define PID_REQUIRED_REPORTS 7 |
| 48 | |
| 49 | #define PID_SET_ENVELOPE 8 |
| 50 | #define PID_SET_CONDITION 9 |
| 51 | #define PID_SET_PERIODIC 10 |
| 52 | #define PID_SET_CONSTANT 11 |
| 53 | #define PID_SET_RAMP 12 |
| 54 | static const u8 pidff_reports[] = { |
| 55 | 0x21, 0x77, 0x7d, 0x7f, 0x89, 0x90, 0x96, 0xab, |
| 56 | 0x5a, 0x5f, 0x6e, 0x73, 0x74 |
| 57 | }; |
| 58 | |
| 59 | /* device_control is really 0x95, but 0x96 specified as it is the usage of |
| 60 | the only field in that report */ |
| 61 | |
| 62 | /* Value usage tables used to put fields and values into arrays */ |
| 63 | |
| 64 | #define PID_EFFECT_BLOCK_INDEX 0 |
| 65 | |
| 66 | #define PID_DURATION 1 |
| 67 | #define PID_GAIN 2 |
| 68 | #define PID_TRIGGER_BUTTON 3 |
| 69 | #define PID_TRIGGER_REPEAT_INT 4 |
| 70 | #define PID_DIRECTION_ENABLE 5 |
| 71 | #define PID_START_DELAY 6 |
| 72 | static const u8 pidff_set_effect[] = { |
| 73 | 0x22, 0x50, 0x52, 0x53, 0x54, 0x56, 0xa7 |
| 74 | }; |
| 75 | |
| 76 | #define PID_ATTACK_LEVEL 1 |
| 77 | #define PID_ATTACK_TIME 2 |
| 78 | #define PID_FADE_LEVEL 3 |
| 79 | #define PID_FADE_TIME 4 |
| 80 | static const u8 pidff_set_envelope[] = { 0x22, 0x5b, 0x5c, 0x5d, 0x5e }; |
| 81 | |
| 82 | #define PID_PARAM_BLOCK_OFFSET 1 |
| 83 | #define PID_CP_OFFSET 2 |
| 84 | #define PID_POS_COEFFICIENT 3 |
| 85 | #define PID_NEG_COEFFICIENT 4 |
| 86 | #define PID_POS_SATURATION 5 |
| 87 | #define PID_NEG_SATURATION 6 |
| 88 | #define PID_DEAD_BAND 7 |
| 89 | static const u8 pidff_set_condition[] = { |
| 90 | 0x22, 0x23, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65 |
| 91 | }; |
| 92 | |
| 93 | #define PID_MAGNITUDE 1 |
| 94 | #define PID_OFFSET 2 |
| 95 | #define PID_PHASE 3 |
| 96 | #define PID_PERIOD 4 |
| 97 | static const u8 pidff_set_periodic[] = { 0x22, 0x70, 0x6f, 0x71, 0x72 }; |
| 98 | static const u8 pidff_set_constant[] = { 0x22, 0x70 }; |
| 99 | |
| 100 | #define PID_RAMP_START 1 |
| 101 | #define PID_RAMP_END 2 |
| 102 | static const u8 pidff_set_ramp[] = { 0x22, 0x75, 0x76 }; |
| 103 | |
| 104 | #define PID_RAM_POOL_AVAILABLE 1 |
| 105 | static const u8 pidff_block_load[] = { 0x22, 0xac }; |
| 106 | |
| 107 | #define PID_LOOP_COUNT 1 |
| 108 | static const u8 pidff_effect_operation[] = { 0x22, 0x7c }; |
| 109 | |
| 110 | static const u8 pidff_block_free[] = { 0x22 }; |
| 111 | |
| 112 | #define PID_DEVICE_GAIN_FIELD 0 |
| 113 | static const u8 pidff_device_gain[] = { 0x7e }; |
| 114 | |
| 115 | #define PID_RAM_POOL_SIZE 0 |
| 116 | #define PID_SIMULTANEOUS_MAX 1 |
| 117 | #define PID_DEVICE_MANAGED_POOL 2 |
| 118 | static const u8 pidff_pool[] = { 0x80, 0x83, 0xa9 }; |
| 119 | |
| 120 | /* Special field key tables used to put special field keys into arrays */ |
| 121 | |
| 122 | #define PID_ENABLE_ACTUATORS 0 |
| 123 | #define PID_RESET 1 |
| 124 | static const u8 pidff_device_control[] = { 0x97, 0x9a }; |
| 125 | |
| 126 | #define PID_CONSTANT 0 |
| 127 | #define PID_RAMP 1 |
| 128 | #define PID_SQUARE 2 |
| 129 | #define PID_SINE 3 |
| 130 | #define PID_TRIANGLE 4 |
| 131 | #define PID_SAW_UP 5 |
| 132 | #define PID_SAW_DOWN 6 |
| 133 | #define PID_SPRING 7 |
| 134 | #define PID_DAMPER 8 |
| 135 | #define PID_INERTIA 9 |
| 136 | #define PID_FRICTION 10 |
| 137 | static const u8 pidff_effect_types[] = { |
| 138 | 0x26, 0x27, 0x30, 0x31, 0x32, 0x33, 0x34, |
| 139 | 0x40, 0x41, 0x42, 0x43 |
| 140 | }; |
| 141 | |
| 142 | #define PID_BLOCK_LOAD_SUCCESS 0 |
| 143 | #define PID_BLOCK_LOAD_FULL 1 |
| 144 | static const u8 pidff_block_load_status[] = { 0x8c, 0x8d }; |
| 145 | |
| 146 | #define PID_EFFECT_START 0 |
| 147 | #define PID_EFFECT_STOP 1 |
| 148 | static const u8 pidff_effect_operation_status[] = { 0x79, 0x7b }; |
| 149 | |
| 150 | struct pidff_usage { |
| 151 | struct hid_field *field; |
| 152 | s32 *value; |
| 153 | }; |
| 154 | |
| 155 | struct pidff_device { |
| 156 | struct hid_device *hid; |
| 157 | |
| 158 | struct hid_report *reports[sizeof(pidff_reports)]; |
| 159 | |
| 160 | struct pidff_usage set_effect[sizeof(pidff_set_effect)]; |
| 161 | struct pidff_usage set_envelope[sizeof(pidff_set_envelope)]; |
| 162 | struct pidff_usage set_condition[sizeof(pidff_set_condition)]; |
| 163 | struct pidff_usage set_periodic[sizeof(pidff_set_periodic)]; |
| 164 | struct pidff_usage set_constant[sizeof(pidff_set_constant)]; |
| 165 | struct pidff_usage set_ramp[sizeof(pidff_set_ramp)]; |
| 166 | |
| 167 | struct pidff_usage device_gain[sizeof(pidff_device_gain)]; |
| 168 | struct pidff_usage block_load[sizeof(pidff_block_load)]; |
| 169 | struct pidff_usage pool[sizeof(pidff_pool)]; |
| 170 | struct pidff_usage effect_operation[sizeof(pidff_effect_operation)]; |
| 171 | struct pidff_usage block_free[sizeof(pidff_block_free)]; |
| 172 | |
| 173 | /* Special field is a field that is not composed of |
| 174 | usage<->value pairs that pidff_usage values are */ |
| 175 | |
| 176 | /* Special field in create_new_effect */ |
| 177 | struct hid_field *create_new_effect_type; |
| 178 | |
| 179 | /* Special fields in set_effect */ |
| 180 | struct hid_field *set_effect_type; |
| 181 | struct hid_field *effect_direction; |
| 182 | |
| 183 | /* Special field in device_control */ |
| 184 | struct hid_field *device_control; |
| 185 | |
| 186 | /* Special field in block_load */ |
| 187 | struct hid_field *block_load_status; |
| 188 | |
| 189 | /* Special field in effect_operation */ |
| 190 | struct hid_field *effect_operation_status; |
| 191 | |
| 192 | int control_id[sizeof(pidff_device_control)]; |
| 193 | int type_id[sizeof(pidff_effect_types)]; |
| 194 | int status_id[sizeof(pidff_block_load_status)]; |
| 195 | int operation_id[sizeof(pidff_effect_operation_status)]; |
| 196 | |
| 197 | int pid_id[PID_EFFECTS_MAX]; |
| 198 | }; |
| 199 | |
| 200 | /* |
| 201 | * Scale an unsigned value with range 0..max for the given field |
| 202 | */ |
| 203 | static int pidff_rescale(int i, int max, struct hid_field *field) |
| 204 | { |
| 205 | return i * (field->logical_maximum - field->logical_minimum) / max + |
| 206 | field->logical_minimum; |
| 207 | } |
| 208 | |
| 209 | /* |
| 210 | * Scale a signed value in range -0x8000..0x7fff for the given field |
| 211 | */ |
| 212 | static int pidff_rescale_signed(int i, struct hid_field *field) |
| 213 | { |
| 214 | return i == 0 ? 0 : i > |
| 215 | 0 ? i * field->logical_maximum / 0x7fff : i * |
| 216 | field->logical_minimum / -0x8000; |
| 217 | } |
| 218 | |
| 219 | static void pidff_set(struct pidff_usage *usage, u16 value) |
| 220 | { |
| 221 | usage->value[0] = pidff_rescale(value, 0xffff, usage->field); |
| 222 | debug("calculated from %d to %d", value, usage->value[0]); |
| 223 | } |
| 224 | |
| 225 | static void pidff_set_signed(struct pidff_usage *usage, s16 value) |
| 226 | { |
| 227 | if (usage->field->logical_minimum < 0) |
| 228 | usage->value[0] = pidff_rescale_signed(value, usage->field); |
| 229 | else { |
| 230 | if (value < 0) |
| 231 | usage->value[0] = |
| 232 | pidff_rescale(-value, 0x8000, usage->field); |
| 233 | else |
| 234 | usage->value[0] = |
| 235 | pidff_rescale(value, 0x7fff, usage->field); |
| 236 | } |
| 237 | debug("calculated from %d to %d", value, usage->value[0]); |
| 238 | } |
| 239 | |
| 240 | /* |
| 241 | * Send envelope report to the device |
| 242 | */ |
| 243 | static void pidff_set_envelope_report(struct pidff_device *pidff, |
| 244 | struct ff_envelope *envelope) |
| 245 | { |
| 246 | pidff->set_envelope[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 247 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 248 | |
| 249 | pidff->set_envelope[PID_ATTACK_LEVEL].value[0] = |
| 250 | pidff_rescale(envelope->attack_level > |
| 251 | 0x7fff ? 0x7fff : envelope->attack_level, 0x7fff, |
| 252 | pidff->set_envelope[PID_ATTACK_LEVEL].field); |
| 253 | pidff->set_envelope[PID_FADE_LEVEL].value[0] = |
| 254 | pidff_rescale(envelope->fade_level > |
| 255 | 0x7fff ? 0x7fff : envelope->fade_level, 0x7fff, |
| 256 | pidff->set_envelope[PID_FADE_LEVEL].field); |
| 257 | |
| 258 | pidff->set_envelope[PID_ATTACK_TIME].value[0] = envelope->attack_length; |
| 259 | pidff->set_envelope[PID_FADE_TIME].value[0] = envelope->fade_length; |
| 260 | |
| 261 | debug("attack %u => %d", envelope->attack_level, |
| 262 | pidff->set_envelope[PID_ATTACK_LEVEL].value[0]); |
| 263 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 264 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_ENVELOPE], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 265 | USB_DIR_OUT); |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * Test if the new envelope differs from old one |
| 270 | */ |
| 271 | static int pidff_needs_set_envelope(struct ff_envelope *envelope, |
| 272 | struct ff_envelope *old) |
| 273 | { |
| 274 | return envelope->attack_level != old->attack_level || |
| 275 | envelope->fade_level != old->fade_level || |
| 276 | envelope->attack_length != old->attack_length || |
| 277 | envelope->fade_length != old->fade_length; |
| 278 | } |
| 279 | |
| 280 | /* |
| 281 | * Send constant force report to the device |
| 282 | */ |
| 283 | static void pidff_set_constant_force_report(struct pidff_device *pidff, |
| 284 | struct ff_effect *effect) |
| 285 | { |
| 286 | pidff->set_constant[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 287 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 288 | pidff_set_signed(&pidff->set_constant[PID_MAGNITUDE], |
| 289 | effect->u.constant.level); |
| 290 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 291 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_CONSTANT], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 292 | USB_DIR_OUT); |
| 293 | } |
| 294 | |
| 295 | /* |
| 296 | * Test if the constant parameters have changed between effects |
| 297 | */ |
| 298 | static int pidff_needs_set_constant(struct ff_effect *effect, |
| 299 | struct ff_effect *old) |
| 300 | { |
| 301 | return effect->u.constant.level != old->u.constant.level; |
| 302 | } |
| 303 | |
| 304 | /* |
| 305 | * Send set effect report to the device |
| 306 | */ |
| 307 | static void pidff_set_effect_report(struct pidff_device *pidff, |
| 308 | struct ff_effect *effect) |
| 309 | { |
| 310 | pidff->set_effect[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 311 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 312 | pidff->set_effect_type->value[0] = |
| 313 | pidff->create_new_effect_type->value[0]; |
| 314 | pidff->set_effect[PID_DURATION].value[0] = effect->replay.length; |
| 315 | pidff->set_effect[PID_TRIGGER_BUTTON].value[0] = effect->trigger.button; |
| 316 | pidff->set_effect[PID_TRIGGER_REPEAT_INT].value[0] = |
| 317 | effect->trigger.interval; |
| 318 | pidff->set_effect[PID_GAIN].value[0] = |
| 319 | pidff->set_effect[PID_GAIN].field->logical_maximum; |
| 320 | pidff->set_effect[PID_DIRECTION_ENABLE].value[0] = 1; |
| 321 | pidff->effect_direction->value[0] = |
| 322 | pidff_rescale(effect->direction, 0xffff, |
| 323 | pidff->effect_direction); |
| 324 | pidff->set_effect[PID_START_DELAY].value[0] = effect->replay.delay; |
| 325 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 326 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 327 | USB_DIR_OUT); |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Test if the values used in set_effect have changed |
| 332 | */ |
| 333 | static int pidff_needs_set_effect(struct ff_effect *effect, |
| 334 | struct ff_effect *old) |
| 335 | { |
| 336 | return effect->replay.length != old->replay.length || |
| 337 | effect->trigger.interval != old->trigger.interval || |
| 338 | effect->trigger.button != old->trigger.button || |
| 339 | effect->direction != old->direction || |
| 340 | effect->replay.delay != old->replay.delay; |
| 341 | } |
| 342 | |
| 343 | /* |
| 344 | * Send periodic effect report to the device |
| 345 | */ |
| 346 | static void pidff_set_periodic_report(struct pidff_device *pidff, |
| 347 | struct ff_effect *effect) |
| 348 | { |
| 349 | pidff->set_periodic[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 350 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 351 | pidff_set_signed(&pidff->set_periodic[PID_MAGNITUDE], |
| 352 | effect->u.periodic.magnitude); |
| 353 | pidff_set_signed(&pidff->set_periodic[PID_OFFSET], |
| 354 | effect->u.periodic.offset); |
| 355 | pidff_set(&pidff->set_periodic[PID_PHASE], effect->u.periodic.phase); |
| 356 | pidff->set_periodic[PID_PERIOD].value[0] = effect->u.periodic.period; |
| 357 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 358 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_PERIODIC], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 359 | USB_DIR_OUT); |
| 360 | |
| 361 | } |
| 362 | |
| 363 | /* |
| 364 | * Test if periodic effect parameters have changed |
| 365 | */ |
| 366 | static int pidff_needs_set_periodic(struct ff_effect *effect, |
| 367 | struct ff_effect *old) |
| 368 | { |
| 369 | return effect->u.periodic.magnitude != old->u.periodic.magnitude || |
| 370 | effect->u.periodic.offset != old->u.periodic.offset || |
| 371 | effect->u.periodic.phase != old->u.periodic.phase || |
| 372 | effect->u.periodic.period != old->u.periodic.period; |
| 373 | } |
| 374 | |
| 375 | /* |
| 376 | * Send condition effect reports to the device |
| 377 | */ |
| 378 | static void pidff_set_condition_report(struct pidff_device *pidff, |
| 379 | struct ff_effect *effect) |
| 380 | { |
| 381 | int i; |
| 382 | |
| 383 | pidff->set_condition[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 384 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 385 | |
| 386 | for (i = 0; i < 2; i++) { |
| 387 | pidff->set_condition[PID_PARAM_BLOCK_OFFSET].value[0] = i; |
| 388 | pidff_set_signed(&pidff->set_condition[PID_CP_OFFSET], |
| 389 | effect->u.condition[i].center); |
| 390 | pidff_set_signed(&pidff->set_condition[PID_POS_COEFFICIENT], |
| 391 | effect->u.condition[i].right_coeff); |
| 392 | pidff_set_signed(&pidff->set_condition[PID_NEG_COEFFICIENT], |
| 393 | effect->u.condition[i].left_coeff); |
| 394 | pidff_set(&pidff->set_condition[PID_POS_SATURATION], |
| 395 | effect->u.condition[i].right_saturation); |
| 396 | pidff_set(&pidff->set_condition[PID_NEG_SATURATION], |
| 397 | effect->u.condition[i].left_saturation); |
| 398 | pidff_set(&pidff->set_condition[PID_DEAD_BAND], |
| 399 | effect->u.condition[i].deadband); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 400 | usbhid_wait_io(pidff->hid); |
| 401 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_CONDITION], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 402 | USB_DIR_OUT); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | /* |
| 407 | * Test if condition effect parameters have changed |
| 408 | */ |
| 409 | static int pidff_needs_set_condition(struct ff_effect *effect, |
| 410 | struct ff_effect *old) |
| 411 | { |
| 412 | int i; |
| 413 | int ret = 0; |
| 414 | |
| 415 | for (i = 0; i < 2; i++) { |
| 416 | struct ff_condition_effect *cond = &effect->u.condition[i]; |
| 417 | struct ff_condition_effect *old_cond = &old->u.condition[i]; |
| 418 | |
| 419 | ret |= cond->center != old_cond->center || |
| 420 | cond->right_coeff != old_cond->right_coeff || |
| 421 | cond->left_coeff != old_cond->left_coeff || |
| 422 | cond->right_saturation != old_cond->right_saturation || |
| 423 | cond->left_saturation != old_cond->left_saturation || |
| 424 | cond->deadband != old_cond->deadband; |
| 425 | } |
| 426 | |
| 427 | return ret; |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * Send ramp force report to the device |
| 432 | */ |
| 433 | static void pidff_set_ramp_force_report(struct pidff_device *pidff, |
| 434 | struct ff_effect *effect) |
| 435 | { |
| 436 | pidff->set_ramp[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 437 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 438 | pidff_set_signed(&pidff->set_ramp[PID_RAMP_START], |
| 439 | effect->u.ramp.start_level); |
| 440 | pidff_set_signed(&pidff->set_ramp[PID_RAMP_END], |
| 441 | effect->u.ramp.end_level); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 442 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_RAMP], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 443 | USB_DIR_OUT); |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * Test if ramp force parameters have changed |
| 448 | */ |
| 449 | static int pidff_needs_set_ramp(struct ff_effect *effect, struct ff_effect *old) |
| 450 | { |
| 451 | return effect->u.ramp.start_level != old->u.ramp.start_level || |
| 452 | effect->u.ramp.end_level != old->u.ramp.end_level; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * Send a request for effect upload to the device |
| 457 | * |
| 458 | * Returns 0 if device reported success, -ENOSPC if the device reported memory |
| 459 | * is full. Upon unknown response the function will retry for 60 times, if |
| 460 | * still unsuccessful -EIO is returned. |
| 461 | */ |
| 462 | static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum) |
| 463 | { |
| 464 | int j; |
| 465 | |
| 466 | pidff->create_new_effect_type->value[0] = efnum; |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 467 | usbhid_submit_report(pidff->hid, pidff->reports[PID_CREATE_NEW_EFFECT], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 468 | USB_DIR_OUT); |
| 469 | debug("create_new_effect sent, type: %d", efnum); |
| 470 | |
| 471 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] = 0; |
| 472 | pidff->block_load_status->value[0] = 0; |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 473 | usbhid_wait_io(pidff->hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 474 | |
| 475 | for (j = 0; j < 60; j++) { |
| 476 | debug("pid_block_load requested"); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 477 | usbhid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_LOAD], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 478 | USB_DIR_IN); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 479 | usbhid_wait_io(pidff->hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 480 | if (pidff->block_load_status->value[0] == |
| 481 | pidff->status_id[PID_BLOCK_LOAD_SUCCESS]) { |
| 482 | debug("device reported free memory: %d bytes", |
| 483 | pidff->block_load[PID_RAM_POOL_AVAILABLE].value ? |
| 484 | pidff->block_load[PID_RAM_POOL_AVAILABLE].value[0] : -1); |
| 485 | return 0; |
| 486 | } |
| 487 | if (pidff->block_load_status->value[0] == |
| 488 | pidff->status_id[PID_BLOCK_LOAD_FULL]) { |
| 489 | debug("not enough memory free: %d bytes", |
| 490 | pidff->block_load[PID_RAM_POOL_AVAILABLE].value ? |
| 491 | pidff->block_load[PID_RAM_POOL_AVAILABLE].value[0] : -1); |
| 492 | return -ENOSPC; |
| 493 | } |
| 494 | } |
| 495 | printk(KERN_ERR "hid-pidff: pid_block_load failed 60 times\n"); |
| 496 | return -EIO; |
| 497 | } |
| 498 | |
| 499 | /* |
| 500 | * Play the effect with PID id n times |
| 501 | */ |
| 502 | static void pidff_playback_pid(struct pidff_device *pidff, int pid_id, int n) |
| 503 | { |
| 504 | pidff->effect_operation[PID_EFFECT_BLOCK_INDEX].value[0] = pid_id; |
| 505 | |
| 506 | if (n == 0) { |
| 507 | pidff->effect_operation_status->value[0] = |
| 508 | pidff->operation_id[PID_EFFECT_STOP]; |
| 509 | } else { |
| 510 | pidff->effect_operation_status->value[0] = |
| 511 | pidff->operation_id[PID_EFFECT_START]; |
| 512 | pidff->effect_operation[PID_LOOP_COUNT].value[0] = n; |
| 513 | } |
| 514 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 515 | usbhid_wait_io(pidff->hid); |
| 516 | usbhid_submit_report(pidff->hid, pidff->reports[PID_EFFECT_OPERATION], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 517 | USB_DIR_OUT); |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * Play the effect with effect id @effect_id for @value times |
| 522 | */ |
| 523 | static int pidff_playback(struct input_dev *dev, int effect_id, int value) |
| 524 | { |
| 525 | struct pidff_device *pidff = dev->ff->private; |
| 526 | |
| 527 | pidff_playback_pid(pidff, pidff->pid_id[effect_id], value); |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Erase effect with PID id |
| 534 | */ |
| 535 | static void pidff_erase_pid(struct pidff_device *pidff, int pid_id) |
| 536 | { |
| 537 | pidff->block_free[PID_EFFECT_BLOCK_INDEX].value[0] = pid_id; |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 538 | usbhid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_FREE], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 539 | USB_DIR_OUT); |
| 540 | } |
| 541 | |
| 542 | /* |
| 543 | * Stop and erase effect with effect_id |
| 544 | */ |
| 545 | static int pidff_erase_effect(struct input_dev *dev, int effect_id) |
| 546 | { |
| 547 | struct pidff_device *pidff = dev->ff->private; |
| 548 | int pid_id = pidff->pid_id[effect_id]; |
| 549 | |
| 550 | debug("starting to erase %d/%d", effect_id, pidff->pid_id[effect_id]); |
| 551 | pidff_playback_pid(pidff, pid_id, 0); |
| 552 | pidff_erase_pid(pidff, pid_id); |
| 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * Effect upload handler |
| 559 | */ |
| 560 | static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect, |
| 561 | struct ff_effect *old) |
| 562 | { |
| 563 | struct pidff_device *pidff = dev->ff->private; |
| 564 | int type_id; |
| 565 | int error; |
| 566 | |
| 567 | switch (effect->type) { |
| 568 | case FF_CONSTANT: |
| 569 | if (!old) { |
| 570 | error = pidff_request_effect_upload(pidff, |
| 571 | pidff->type_id[PID_CONSTANT]); |
| 572 | if (error) |
| 573 | return error; |
| 574 | } |
| 575 | if (!old || pidff_needs_set_effect(effect, old)) |
| 576 | pidff_set_effect_report(pidff, effect); |
| 577 | if (!old || pidff_needs_set_constant(effect, old)) |
| 578 | pidff_set_constant_force_report(pidff, effect); |
| 579 | if (!old || |
| 580 | pidff_needs_set_envelope(&effect->u.constant.envelope, |
| 581 | &old->u.constant.envelope)) |
| 582 | pidff_set_envelope_report(pidff, |
| 583 | &effect->u.constant.envelope); |
| 584 | break; |
| 585 | |
| 586 | case FF_PERIODIC: |
| 587 | if (!old) { |
| 588 | switch (effect->u.periodic.waveform) { |
| 589 | case FF_SQUARE: |
| 590 | type_id = PID_SQUARE; |
| 591 | break; |
| 592 | case FF_TRIANGLE: |
| 593 | type_id = PID_TRIANGLE; |
| 594 | break; |
| 595 | case FF_SINE: |
| 596 | type_id = PID_SINE; |
| 597 | break; |
| 598 | case FF_SAW_UP: |
| 599 | type_id = PID_SAW_UP; |
| 600 | break; |
| 601 | case FF_SAW_DOWN: |
| 602 | type_id = PID_SAW_DOWN; |
| 603 | break; |
| 604 | default: |
| 605 | printk(KERN_ERR |
| 606 | "hid-pidff: invalid waveform\n"); |
| 607 | return -EINVAL; |
| 608 | } |
| 609 | |
| 610 | error = pidff_request_effect_upload(pidff, |
| 611 | pidff->type_id[type_id]); |
| 612 | if (error) |
| 613 | return error; |
| 614 | } |
| 615 | if (!old || pidff_needs_set_effect(effect, old)) |
| 616 | pidff_set_effect_report(pidff, effect); |
| 617 | if (!old || pidff_needs_set_periodic(effect, old)) |
| 618 | pidff_set_periodic_report(pidff, effect); |
| 619 | if (!old || |
| 620 | pidff_needs_set_envelope(&effect->u.periodic.envelope, |
| 621 | &old->u.periodic.envelope)) |
| 622 | pidff_set_envelope_report(pidff, |
| 623 | &effect->u.periodic.envelope); |
| 624 | break; |
| 625 | |
| 626 | case FF_RAMP: |
| 627 | if (!old) { |
| 628 | error = pidff_request_effect_upload(pidff, |
| 629 | pidff->type_id[PID_RAMP]); |
| 630 | if (error) |
| 631 | return error; |
| 632 | } |
| 633 | if (!old || pidff_needs_set_effect(effect, old)) |
| 634 | pidff_set_effect_report(pidff, effect); |
| 635 | if (!old || pidff_needs_set_ramp(effect, old)) |
| 636 | pidff_set_ramp_force_report(pidff, effect); |
| 637 | if (!old || |
| 638 | pidff_needs_set_envelope(&effect->u.ramp.envelope, |
| 639 | &old->u.ramp.envelope)) |
| 640 | pidff_set_envelope_report(pidff, |
| 641 | &effect->u.ramp.envelope); |
| 642 | break; |
| 643 | |
| 644 | case FF_SPRING: |
| 645 | if (!old) { |
| 646 | error = pidff_request_effect_upload(pidff, |
| 647 | pidff->type_id[PID_SPRING]); |
| 648 | if (error) |
| 649 | return error; |
| 650 | } |
| 651 | if (!old || pidff_needs_set_effect(effect, old)) |
| 652 | pidff_set_effect_report(pidff, effect); |
| 653 | if (!old || pidff_needs_set_condition(effect, old)) |
| 654 | pidff_set_condition_report(pidff, effect); |
| 655 | break; |
| 656 | |
| 657 | case FF_FRICTION: |
| 658 | if (!old) { |
| 659 | error = pidff_request_effect_upload(pidff, |
| 660 | pidff->type_id[PID_FRICTION]); |
| 661 | if (error) |
| 662 | return error; |
| 663 | } |
| 664 | if (!old || pidff_needs_set_effect(effect, old)) |
| 665 | pidff_set_effect_report(pidff, effect); |
| 666 | if (!old || pidff_needs_set_condition(effect, old)) |
| 667 | pidff_set_condition_report(pidff, effect); |
| 668 | break; |
| 669 | |
| 670 | case FF_DAMPER: |
| 671 | if (!old) { |
| 672 | error = pidff_request_effect_upload(pidff, |
| 673 | pidff->type_id[PID_DAMPER]); |
| 674 | if (error) |
| 675 | return error; |
| 676 | } |
| 677 | if (!old || pidff_needs_set_effect(effect, old)) |
| 678 | pidff_set_effect_report(pidff, effect); |
| 679 | if (!old || pidff_needs_set_condition(effect, old)) |
| 680 | pidff_set_condition_report(pidff, effect); |
| 681 | break; |
| 682 | |
| 683 | case FF_INERTIA: |
| 684 | if (!old) { |
| 685 | error = pidff_request_effect_upload(pidff, |
| 686 | pidff->type_id[PID_INERTIA]); |
| 687 | if (error) |
| 688 | return error; |
| 689 | } |
| 690 | if (!old || pidff_needs_set_effect(effect, old)) |
| 691 | pidff_set_effect_report(pidff, effect); |
| 692 | if (!old || pidff_needs_set_condition(effect, old)) |
| 693 | pidff_set_condition_report(pidff, effect); |
| 694 | break; |
| 695 | |
| 696 | default: |
| 697 | printk(KERN_ERR "hid-pidff: invalid type\n"); |
| 698 | return -EINVAL; |
| 699 | } |
| 700 | |
| 701 | if (!old) |
| 702 | pidff->pid_id[effect->id] = |
| 703 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]; |
| 704 | |
| 705 | debug("uploaded"); |
| 706 | |
| 707 | return 0; |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | * set_gain() handler |
| 712 | */ |
| 713 | static void pidff_set_gain(struct input_dev *dev, u16 gain) |
| 714 | { |
| 715 | struct pidff_device *pidff = dev->ff->private; |
| 716 | |
| 717 | pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], gain); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 718 | usbhid_submit_report(pidff->hid, pidff->reports[PID_DEVICE_GAIN], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 719 | USB_DIR_OUT); |
| 720 | } |
| 721 | |
| 722 | static void pidff_autocenter(struct pidff_device *pidff, u16 magnitude) |
| 723 | { |
| 724 | struct hid_field *field = |
| 725 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].field; |
| 726 | |
| 727 | if (!magnitude) { |
| 728 | pidff_playback_pid(pidff, field->logical_minimum, 0); |
| 729 | return; |
| 730 | } |
| 731 | |
| 732 | pidff_playback_pid(pidff, field->logical_minimum, 1); |
| 733 | |
| 734 | pidff->set_effect[PID_EFFECT_BLOCK_INDEX].value[0] = |
| 735 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum; |
| 736 | pidff->set_effect_type->value[0] = pidff->type_id[PID_SPRING]; |
| 737 | pidff->set_effect[PID_DURATION].value[0] = 0; |
| 738 | pidff->set_effect[PID_TRIGGER_BUTTON].value[0] = 0; |
| 739 | pidff->set_effect[PID_TRIGGER_REPEAT_INT].value[0] = 0; |
| 740 | pidff_set(&pidff->set_effect[PID_GAIN], magnitude); |
| 741 | pidff->set_effect[PID_START_DELAY].value[0] = 0; |
| 742 | |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 743 | usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 744 | USB_DIR_OUT); |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * pidff_set_autocenter() handler |
| 749 | */ |
| 750 | static void pidff_set_autocenter(struct input_dev *dev, u16 magnitude) |
| 751 | { |
| 752 | struct pidff_device *pidff = dev->ff->private; |
| 753 | |
| 754 | pidff_autocenter(pidff, magnitude); |
| 755 | } |
| 756 | |
| 757 | /* |
| 758 | * Find fields from a report and fill a pidff_usage |
| 759 | */ |
| 760 | static int pidff_find_fields(struct pidff_usage *usage, const u8 *table, |
| 761 | struct hid_report *report, int count, int strict) |
| 762 | { |
| 763 | int i, j, k, found; |
| 764 | |
| 765 | for (k = 0; k < count; k++) { |
| 766 | found = 0; |
| 767 | for (i = 0; i < report->maxfield; i++) { |
| 768 | if (report->field[i]->maxusage != |
| 769 | report->field[i]->report_count) { |
| 770 | debug("maxusage and report_count do not match, " |
| 771 | "skipping"); |
| 772 | continue; |
| 773 | } |
| 774 | for (j = 0; j < report->field[i]->maxusage; j++) { |
| 775 | if (report->field[i]->usage[j].hid == |
| 776 | (HID_UP_PID | table[k])) { |
| 777 | debug("found %d at %d->%d", k, i, j); |
| 778 | usage[k].field = report->field[i]; |
| 779 | usage[k].value = |
| 780 | &report->field[i]->value[j]; |
| 781 | found = 1; |
| 782 | break; |
| 783 | } |
| 784 | } |
| 785 | if (found) |
| 786 | break; |
| 787 | } |
| 788 | if (!found && strict) { |
| 789 | debug("failed to locate %d", k); |
| 790 | return -1; |
| 791 | } |
| 792 | } |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * Return index into pidff_reports for the given usage |
| 798 | */ |
| 799 | static int pidff_check_usage(int usage) |
| 800 | { |
| 801 | int i; |
| 802 | |
| 803 | for (i = 0; i < sizeof(pidff_reports); i++) |
| 804 | if (usage == (HID_UP_PID | pidff_reports[i])) |
| 805 | return i; |
| 806 | |
| 807 | return -1; |
| 808 | } |
| 809 | |
| 810 | /* |
| 811 | * Find the reports and fill pidff->reports[] |
| 812 | * report_type specifies either OUTPUT or FEATURE reports |
| 813 | */ |
| 814 | static void pidff_find_reports(struct hid_device *hid, int report_type, |
| 815 | struct pidff_device *pidff) |
| 816 | { |
| 817 | struct hid_report *report; |
| 818 | int i, ret; |
| 819 | |
| 820 | list_for_each_entry(report, |
| 821 | &hid->report_enum[report_type].report_list, list) { |
| 822 | if (report->maxfield < 1) |
| 823 | continue; |
| 824 | ret = pidff_check_usage(report->field[0]->logical); |
| 825 | if (ret != -1) { |
| 826 | debug("found usage 0x%02x from field->logical", |
| 827 | pidff_reports[ret]); |
| 828 | pidff->reports[ret] = report; |
| 829 | continue; |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * Sometimes logical collections are stacked to indicate |
| 834 | * different usages for the report and the field, in which |
| 835 | * case we want the usage of the parent. However, Linux HID |
| 836 | * implementation hides this fact, so we have to dig it up |
| 837 | * ourselves |
| 838 | */ |
| 839 | i = report->field[0]->usage[0].collection_index; |
| 840 | if (i <= 0 || |
| 841 | hid->collection[i - 1].type != HID_COLLECTION_LOGICAL) |
| 842 | continue; |
| 843 | ret = pidff_check_usage(hid->collection[i - 1].usage); |
| 844 | if (ret != -1 && !pidff->reports[ret]) { |
| 845 | debug("found usage 0x%02x from collection array", |
| 846 | pidff_reports[ret]); |
| 847 | pidff->reports[ret] = report; |
| 848 | } |
| 849 | } |
| 850 | } |
| 851 | |
| 852 | /* |
| 853 | * Test if the required reports have been found |
| 854 | */ |
| 855 | static int pidff_reports_ok(struct pidff_device *pidff) |
| 856 | { |
| 857 | int i; |
| 858 | |
| 859 | for (i = 0; i <= PID_REQUIRED_REPORTS; i++) { |
| 860 | if (!pidff->reports[i]) { |
| 861 | debug("%d missing", i); |
| 862 | return 0; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | return 1; |
| 867 | } |
| 868 | |
| 869 | /* |
| 870 | * Find a field with a specific usage within a report |
| 871 | */ |
| 872 | static struct hid_field *pidff_find_special_field(struct hid_report *report, |
| 873 | int usage, int enforce_min) |
| 874 | { |
| 875 | int i; |
| 876 | |
| 877 | for (i = 0; i < report->maxfield; i++) { |
| 878 | if (report->field[i]->logical == (HID_UP_PID | usage) && |
| 879 | report->field[i]->report_count > 0) { |
| 880 | if (!enforce_min || |
| 881 | report->field[i]->logical_minimum == 1) |
| 882 | return report->field[i]; |
| 883 | else { |
| 884 | printk(KERN_ERR "hid-pidff: logical_minimum " |
| 885 | "is not 1 as it should be\n"); |
| 886 | return NULL; |
| 887 | } |
| 888 | } |
| 889 | } |
| 890 | return NULL; |
| 891 | } |
| 892 | |
| 893 | /* |
| 894 | * Fill a pidff->*_id struct table |
| 895 | */ |
| 896 | static int pidff_find_special_keys(int *keys, struct hid_field *fld, |
| 897 | const u8 *usagetable, int count) |
| 898 | { |
| 899 | |
| 900 | int i, j; |
| 901 | int found = 0; |
| 902 | |
| 903 | for (i = 0; i < count; i++) { |
| 904 | for (j = 0; j < fld->maxusage; j++) { |
| 905 | if (fld->usage[j].hid == (HID_UP_PID | usagetable[i])) { |
| 906 | keys[i] = j + 1; |
| 907 | found++; |
| 908 | break; |
| 909 | } |
| 910 | } |
| 911 | } |
| 912 | return found; |
| 913 | } |
| 914 | |
| 915 | #define PIDFF_FIND_SPECIAL_KEYS(keys, field, name) \ |
| 916 | pidff_find_special_keys(pidff->keys, pidff->field, pidff_ ## name, \ |
| 917 | sizeof(pidff_ ## name)) |
| 918 | |
| 919 | /* |
| 920 | * Find and check the special fields |
| 921 | */ |
| 922 | static int pidff_find_special_fields(struct pidff_device *pidff) |
| 923 | { |
| 924 | debug("finding special fields"); |
| 925 | |
| 926 | pidff->create_new_effect_type = |
| 927 | pidff_find_special_field(pidff->reports[PID_CREATE_NEW_EFFECT], |
| 928 | 0x25, 1); |
| 929 | pidff->set_effect_type = |
| 930 | pidff_find_special_field(pidff->reports[PID_SET_EFFECT], |
| 931 | 0x25, 1); |
| 932 | pidff->effect_direction = |
| 933 | pidff_find_special_field(pidff->reports[PID_SET_EFFECT], |
| 934 | 0x57, 0); |
| 935 | pidff->device_control = |
| 936 | pidff_find_special_field(pidff->reports[PID_DEVICE_CONTROL], |
| 937 | 0x96, 1); |
| 938 | pidff->block_load_status = |
| 939 | pidff_find_special_field(pidff->reports[PID_BLOCK_LOAD], |
| 940 | 0x8b, 1); |
| 941 | pidff->effect_operation_status = |
| 942 | pidff_find_special_field(pidff->reports[PID_EFFECT_OPERATION], |
| 943 | 0x78, 1); |
| 944 | |
| 945 | debug("search done"); |
| 946 | |
| 947 | if (!pidff->create_new_effect_type || !pidff->set_effect_type) { |
| 948 | printk(KERN_ERR "hid-pidff: effect lists not found\n"); |
| 949 | return -1; |
| 950 | } |
| 951 | |
| 952 | if (!pidff->effect_direction) { |
| 953 | printk(KERN_ERR "hid-pidff: direction field not found\n"); |
| 954 | return -1; |
| 955 | } |
| 956 | |
| 957 | if (!pidff->device_control) { |
| 958 | printk(KERN_ERR "hid-pidff: device control field not found\n"); |
| 959 | return -1; |
| 960 | } |
| 961 | |
| 962 | if (!pidff->block_load_status) { |
| 963 | printk(KERN_ERR |
| 964 | "hid-pidff: block load status field not found\n"); |
| 965 | return -1; |
| 966 | } |
| 967 | |
| 968 | if (!pidff->effect_operation_status) { |
| 969 | printk(KERN_ERR |
| 970 | "hid-pidff: effect operation field not found\n"); |
| 971 | return -1; |
| 972 | } |
| 973 | |
| 974 | pidff_find_special_keys(pidff->control_id, pidff->device_control, |
| 975 | pidff_device_control, |
| 976 | sizeof(pidff_device_control)); |
| 977 | |
| 978 | PIDFF_FIND_SPECIAL_KEYS(control_id, device_control, device_control); |
| 979 | |
| 980 | if (!PIDFF_FIND_SPECIAL_KEYS(type_id, create_new_effect_type, |
| 981 | effect_types)) { |
| 982 | printk(KERN_ERR "hid-pidff: no effect types found\n"); |
| 983 | return -1; |
| 984 | } |
| 985 | |
| 986 | if (PIDFF_FIND_SPECIAL_KEYS(status_id, block_load_status, |
| 987 | block_load_status) != |
| 988 | sizeof(pidff_block_load_status)) { |
| 989 | printk(KERN_ERR |
| 990 | "hidpidff: block load status identifiers not found\n"); |
| 991 | return -1; |
| 992 | } |
| 993 | |
| 994 | if (PIDFF_FIND_SPECIAL_KEYS(operation_id, effect_operation_status, |
| 995 | effect_operation_status) != |
| 996 | sizeof(pidff_effect_operation_status)) { |
| 997 | printk(KERN_ERR |
| 998 | "hidpidff: effect operation identifiers not found\n"); |
| 999 | return -1; |
| 1000 | } |
| 1001 | |
| 1002 | return 0; |
| 1003 | } |
| 1004 | |
| 1005 | /** |
| 1006 | * Find the implemented effect types |
| 1007 | */ |
| 1008 | static int pidff_find_effects(struct pidff_device *pidff, |
| 1009 | struct input_dev *dev) |
| 1010 | { |
| 1011 | int i; |
| 1012 | |
| 1013 | for (i = 0; i < sizeof(pidff_effect_types); i++) { |
| 1014 | int pidff_type = pidff->type_id[i]; |
| 1015 | if (pidff->set_effect_type->usage[pidff_type].hid != |
| 1016 | pidff->create_new_effect_type->usage[pidff_type].hid) { |
| 1017 | printk(KERN_ERR "hid-pidff: " |
| 1018 | "effect type number %d is invalid\n", i); |
| 1019 | return -1; |
| 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | if (pidff->type_id[PID_CONSTANT]) |
| 1024 | set_bit(FF_CONSTANT, dev->ffbit); |
| 1025 | if (pidff->type_id[PID_RAMP]) |
| 1026 | set_bit(FF_RAMP, dev->ffbit); |
| 1027 | if (pidff->type_id[PID_SQUARE]) { |
| 1028 | set_bit(FF_SQUARE, dev->ffbit); |
| 1029 | set_bit(FF_PERIODIC, dev->ffbit); |
| 1030 | } |
| 1031 | if (pidff->type_id[PID_SINE]) { |
| 1032 | set_bit(FF_SINE, dev->ffbit); |
| 1033 | set_bit(FF_PERIODIC, dev->ffbit); |
| 1034 | } |
| 1035 | if (pidff->type_id[PID_TRIANGLE]) { |
| 1036 | set_bit(FF_TRIANGLE, dev->ffbit); |
| 1037 | set_bit(FF_PERIODIC, dev->ffbit); |
| 1038 | } |
| 1039 | if (pidff->type_id[PID_SAW_UP]) { |
| 1040 | set_bit(FF_SAW_UP, dev->ffbit); |
| 1041 | set_bit(FF_PERIODIC, dev->ffbit); |
| 1042 | } |
| 1043 | if (pidff->type_id[PID_SAW_DOWN]) { |
| 1044 | set_bit(FF_SAW_DOWN, dev->ffbit); |
| 1045 | set_bit(FF_PERIODIC, dev->ffbit); |
| 1046 | } |
| 1047 | if (pidff->type_id[PID_SPRING]) |
| 1048 | set_bit(FF_SPRING, dev->ffbit); |
| 1049 | if (pidff->type_id[PID_DAMPER]) |
| 1050 | set_bit(FF_DAMPER, dev->ffbit); |
| 1051 | if (pidff->type_id[PID_INERTIA]) |
| 1052 | set_bit(FF_INERTIA, dev->ffbit); |
| 1053 | if (pidff->type_id[PID_FRICTION]) |
| 1054 | set_bit(FF_FRICTION, dev->ffbit); |
| 1055 | |
| 1056 | return 0; |
| 1057 | |
| 1058 | } |
| 1059 | |
| 1060 | #define PIDFF_FIND_FIELDS(name, report, strict) \ |
| 1061 | pidff_find_fields(pidff->name, pidff_ ## name, \ |
| 1062 | pidff->reports[report], \ |
| 1063 | sizeof(pidff_ ## name), strict) |
| 1064 | |
| 1065 | /* |
| 1066 | * Fill and check the pidff_usages |
| 1067 | */ |
| 1068 | static int pidff_init_fields(struct pidff_device *pidff, struct input_dev *dev) |
| 1069 | { |
| 1070 | int envelope_ok = 0; |
| 1071 | |
| 1072 | if (PIDFF_FIND_FIELDS(set_effect, PID_SET_EFFECT, 1)) { |
| 1073 | printk(KERN_ERR |
| 1074 | "hid-pidff: unknown set_effect report layout\n"); |
| 1075 | return -ENODEV; |
| 1076 | } |
| 1077 | |
| 1078 | PIDFF_FIND_FIELDS(block_load, PID_BLOCK_LOAD, 0); |
| 1079 | if (!pidff->block_load[PID_EFFECT_BLOCK_INDEX].value) { |
| 1080 | printk(KERN_ERR |
| 1081 | "hid-pidff: unknown pid_block_load report layout\n"); |
| 1082 | return -ENODEV; |
| 1083 | } |
| 1084 | |
| 1085 | if (PIDFF_FIND_FIELDS(effect_operation, PID_EFFECT_OPERATION, 1)) { |
| 1086 | printk(KERN_ERR |
| 1087 | "hid-pidff: unknown effect_operation report layout\n"); |
| 1088 | return -ENODEV; |
| 1089 | } |
| 1090 | |
| 1091 | if (PIDFF_FIND_FIELDS(block_free, PID_BLOCK_FREE, 1)) { |
| 1092 | printk(KERN_ERR |
| 1093 | "hid-pidff: unknown pid_block_free report layout\n"); |
| 1094 | return -ENODEV; |
| 1095 | } |
| 1096 | |
| 1097 | if (!PIDFF_FIND_FIELDS(set_envelope, PID_SET_ENVELOPE, 1)) |
| 1098 | envelope_ok = 1; |
| 1099 | |
| 1100 | if (pidff_find_special_fields(pidff) || pidff_find_effects(pidff, dev)) |
| 1101 | return -ENODEV; |
| 1102 | |
| 1103 | if (!envelope_ok) { |
| 1104 | if (test_and_clear_bit(FF_CONSTANT, dev->ffbit)) |
| 1105 | printk(KERN_WARNING "hid-pidff: " |
| 1106 | "has constant effect but no envelope\n"); |
| 1107 | if (test_and_clear_bit(FF_RAMP, dev->ffbit)) |
| 1108 | printk(KERN_WARNING "hid-pidff: " |
| 1109 | "has ramp effect but no envelope\n"); |
| 1110 | |
| 1111 | if (test_and_clear_bit(FF_PERIODIC, dev->ffbit)) |
| 1112 | printk(KERN_WARNING "hid-pidff: " |
| 1113 | "has periodic effect but no envelope\n"); |
| 1114 | } |
| 1115 | |
| 1116 | if (test_bit(FF_CONSTANT, dev->ffbit) && |
| 1117 | PIDFF_FIND_FIELDS(set_constant, PID_SET_CONSTANT, 1)) { |
| 1118 | printk(KERN_WARNING |
| 1119 | "hid-pidff: unknown constant effect layout\n"); |
| 1120 | clear_bit(FF_CONSTANT, dev->ffbit); |
| 1121 | } |
| 1122 | |
| 1123 | if (test_bit(FF_RAMP, dev->ffbit) && |
| 1124 | PIDFF_FIND_FIELDS(set_ramp, PID_SET_RAMP, 1)) { |
| 1125 | printk(KERN_WARNING "hid-pidff: unknown ramp effect layout\n"); |
| 1126 | clear_bit(FF_RAMP, dev->ffbit); |
| 1127 | } |
| 1128 | |
| 1129 | if ((test_bit(FF_SPRING, dev->ffbit) || |
| 1130 | test_bit(FF_DAMPER, dev->ffbit) || |
| 1131 | test_bit(FF_FRICTION, dev->ffbit) || |
| 1132 | test_bit(FF_INERTIA, dev->ffbit)) && |
| 1133 | PIDFF_FIND_FIELDS(set_condition, PID_SET_CONDITION, 1)) { |
| 1134 | printk(KERN_WARNING |
| 1135 | "hid-pidff: unknown condition effect layout\n"); |
| 1136 | clear_bit(FF_SPRING, dev->ffbit); |
| 1137 | clear_bit(FF_DAMPER, dev->ffbit); |
| 1138 | clear_bit(FF_FRICTION, dev->ffbit); |
| 1139 | clear_bit(FF_INERTIA, dev->ffbit); |
| 1140 | } |
| 1141 | |
| 1142 | if (test_bit(FF_PERIODIC, dev->ffbit) && |
| 1143 | PIDFF_FIND_FIELDS(set_periodic, PID_SET_PERIODIC, 1)) { |
| 1144 | printk(KERN_WARNING |
| 1145 | "hid-pidff: unknown periodic effect layout\n"); |
| 1146 | clear_bit(FF_PERIODIC, dev->ffbit); |
| 1147 | } |
| 1148 | |
| 1149 | PIDFF_FIND_FIELDS(pool, PID_POOL, 0); |
| 1150 | |
| 1151 | if (!PIDFF_FIND_FIELDS(device_gain, PID_DEVICE_GAIN, 1)) |
| 1152 | set_bit(FF_GAIN, dev->ffbit); |
| 1153 | |
| 1154 | return 0; |
| 1155 | } |
| 1156 | |
| 1157 | /* |
| 1158 | * Reset the device |
| 1159 | */ |
| 1160 | static void pidff_reset(struct pidff_device *pidff) |
| 1161 | { |
| 1162 | struct hid_device *hid = pidff->hid; |
| 1163 | int i = 0; |
| 1164 | |
| 1165 | pidff->device_control->value[0] = pidff->control_id[PID_RESET]; |
| 1166 | /* We reset twice as sometimes hid_wait_io isn't waiting long enough */ |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1167 | usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); |
| 1168 | usbhid_wait_io(hid); |
| 1169 | usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); |
| 1170 | usbhid_wait_io(hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1171 | |
| 1172 | pidff->device_control->value[0] = |
| 1173 | pidff->control_id[PID_ENABLE_ACTUATORS]; |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1174 | usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); |
| 1175 | usbhid_wait_io(hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1176 | |
| 1177 | /* pool report is sometimes messed up, refetch it */ |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1178 | usbhid_submit_report(hid, pidff->reports[PID_POOL], USB_DIR_IN); |
| 1179 | usbhid_wait_io(hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1180 | |
| 1181 | if (pidff->pool[PID_SIMULTANEOUS_MAX].value) { |
| 1182 | int sim_effects = pidff->pool[PID_SIMULTANEOUS_MAX].value[0]; |
| 1183 | while (sim_effects < 2) { |
| 1184 | if (i++ > 20) { |
| 1185 | printk(KERN_WARNING "hid-pidff: device reports " |
| 1186 | "%d simultaneous effects\n", |
| 1187 | sim_effects); |
| 1188 | break; |
| 1189 | } |
| 1190 | debug("pid_pool requested again"); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1191 | usbhid_submit_report(hid, pidff->reports[PID_POOL], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1192 | USB_DIR_IN); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1193 | usbhid_wait_io(hid); |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1194 | } |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | /* |
| 1199 | * Test if autocenter modification is using the supported method |
| 1200 | */ |
| 1201 | static int pidff_check_autocenter(struct pidff_device *pidff, |
| 1202 | struct input_dev *dev) |
| 1203 | { |
| 1204 | int error; |
| 1205 | |
| 1206 | /* |
| 1207 | * Let's find out if autocenter modification is supported |
| 1208 | * Specification doesn't specify anything, so we request an |
| 1209 | * effect upload and cancel it immediately. If the approved |
| 1210 | * effect id was one above the minimum, then we assume the first |
| 1211 | * effect id is a built-in spring type effect used for autocenter |
| 1212 | */ |
| 1213 | |
| 1214 | error = pidff_request_effect_upload(pidff, 1); |
| 1215 | if (error) { |
| 1216 | printk(KERN_ERR "hid-pidff: upload request failed\n"); |
| 1217 | return error; |
| 1218 | } |
| 1219 | |
| 1220 | if (pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] == |
| 1221 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum + 1) { |
| 1222 | pidff_autocenter(pidff, 0xffff); |
| 1223 | set_bit(FF_AUTOCENTER, dev->ffbit); |
| 1224 | } else { |
| 1225 | printk(KERN_NOTICE "hid-pidff: " |
| 1226 | "device has unknown autocenter control method\n"); |
| 1227 | } |
| 1228 | |
| 1229 | pidff_erase_pid(pidff, |
| 1230 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]); |
| 1231 | |
| 1232 | return 0; |
| 1233 | |
| 1234 | } |
| 1235 | |
| 1236 | /* |
| 1237 | * Check if the device is PID and initialize it |
| 1238 | */ |
| 1239 | int hid_pidff_init(struct hid_device *hid) |
| 1240 | { |
| 1241 | struct pidff_device *pidff; |
| 1242 | struct hid_input *hidinput = list_entry(hid->inputs.next, |
| 1243 | struct hid_input, list); |
| 1244 | struct input_dev *dev = hidinput->input; |
| 1245 | struct ff_device *ff; |
| 1246 | int max_effects; |
| 1247 | int error; |
| 1248 | |
| 1249 | debug("starting pid init"); |
| 1250 | |
| 1251 | if (list_empty(&hid->report_enum[HID_OUTPUT_REPORT].report_list)) { |
| 1252 | debug("not a PID device, no output report"); |
| 1253 | return -ENODEV; |
| 1254 | } |
| 1255 | |
| 1256 | pidff = kzalloc(sizeof(*pidff), GFP_KERNEL); |
| 1257 | if (!pidff) |
| 1258 | return -ENOMEM; |
| 1259 | |
| 1260 | pidff->hid = hid; |
| 1261 | |
| 1262 | pidff_find_reports(hid, HID_OUTPUT_REPORT, pidff); |
| 1263 | pidff_find_reports(hid, HID_FEATURE_REPORT, pidff); |
| 1264 | |
| 1265 | if (!pidff_reports_ok(pidff)) { |
| 1266 | debug("reports not ok, aborting"); |
| 1267 | error = -ENODEV; |
| 1268 | goto fail; |
| 1269 | } |
| 1270 | |
| 1271 | error = pidff_init_fields(pidff, dev); |
| 1272 | if (error) |
| 1273 | goto fail; |
| 1274 | |
| 1275 | pidff_reset(pidff); |
| 1276 | |
| 1277 | if (test_bit(FF_GAIN, dev->ffbit)) { |
| 1278 | pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], 0xffff); |
Jiri Kosina | 4916b3a | 2006-12-08 18:41:03 +0100 | [diff] [blame] | 1279 | usbhid_submit_report(pidff->hid, pidff->reports[PID_DEVICE_GAIN], |
Anssi Hannula | 224ee88 | 2006-07-19 01:40:47 -0400 | [diff] [blame] | 1280 | USB_DIR_OUT); |
| 1281 | } |
| 1282 | |
| 1283 | error = pidff_check_autocenter(pidff, dev); |
| 1284 | if (error) |
| 1285 | goto fail; |
| 1286 | |
| 1287 | max_effects = |
| 1288 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_maximum - |
| 1289 | pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum + |
| 1290 | 1; |
| 1291 | debug("max effects is %d", max_effects); |
| 1292 | |
| 1293 | if (max_effects > PID_EFFECTS_MAX) |
| 1294 | max_effects = PID_EFFECTS_MAX; |
| 1295 | |
| 1296 | if (pidff->pool[PID_SIMULTANEOUS_MAX].value) |
| 1297 | debug("max simultaneous effects is %d", |
| 1298 | pidff->pool[PID_SIMULTANEOUS_MAX].value[0]); |
| 1299 | |
| 1300 | if (pidff->pool[PID_RAM_POOL_SIZE].value) |
| 1301 | debug("device memory size is %d bytes", |
| 1302 | pidff->pool[PID_RAM_POOL_SIZE].value[0]); |
| 1303 | |
| 1304 | if (pidff->pool[PID_DEVICE_MANAGED_POOL].value && |
| 1305 | pidff->pool[PID_DEVICE_MANAGED_POOL].value[0] == 0) { |
| 1306 | printk(KERN_NOTICE "hid-pidff: " |
| 1307 | "device does not support device managed pool\n"); |
| 1308 | goto fail; |
| 1309 | } |
| 1310 | |
| 1311 | error = input_ff_create(dev, max_effects); |
| 1312 | if (error) |
| 1313 | goto fail; |
| 1314 | |
| 1315 | ff = dev->ff; |
| 1316 | ff->private = pidff; |
| 1317 | ff->upload = pidff_upload_effect; |
| 1318 | ff->erase = pidff_erase_effect; |
| 1319 | ff->set_gain = pidff_set_gain; |
| 1320 | ff->set_autocenter = pidff_set_autocenter; |
| 1321 | ff->playback = pidff_playback; |
| 1322 | |
| 1323 | printk(KERN_INFO "Force feedback for USB HID PID devices by " |
| 1324 | "Anssi Hannula <anssi.hannula@gmail.com>\n"); |
| 1325 | |
| 1326 | return 0; |
| 1327 | |
| 1328 | fail: |
| 1329 | kfree(pidff); |
| 1330 | return error; |
| 1331 | } |