1 /* 2 * (c) 1999 Andreas Gal <gal@cs.uni-magdeburg.de> 3 * (c) 2000-2001 Vojtech Pavlik <vojtech@ucw.cz> 4 * (c) 2007-2009 Jiri Kosina 5 * 6 * HID debugging support 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 27 */ 28 29 #include <linux/debugfs.h> 30 #include <linux/seq_file.h> 31 #include <linux/sched.h> 32 #include <linux/uaccess.h> 33 #include <linux/poll.h> 34 35 #include <linux/hid.h> 36 #include <linux/hid-debug.h> 37 38 static struct dentry *hid_debug_root; 39 40 struct hid_usage_entry { 41 unsigned page; 42 unsigned usage; 43 const char *description; 44 }; 45 46 static const struct hid_usage_entry hid_usage_table[] = { 47 { 0, 0, "Undefined" }, 48 { 1, 0, "GenericDesktop" }, 49 {0, 0x01, "Pointer"}, 50 {0, 0x02, "Mouse"}, 51 {0, 0x04, "Joystick"}, 52 {0, 0x05, "GamePad"}, 53 {0, 0x06, "Keyboard"}, 54 {0, 0x07, "Keypad"}, 55 {0, 0x08, "MultiAxis"}, 56 {0, 0x30, "X"}, 57 {0, 0x31, "Y"}, 58 {0, 0x32, "Z"}, 59 {0, 0x33, "Rx"}, 60 {0, 0x34, "Ry"}, 61 {0, 0x35, "Rz"}, 62 {0, 0x36, "Slider"}, 63 {0, 0x37, "Dial"}, 64 {0, 0x38, "Wheel"}, 65 {0, 0x39, "HatSwitch"}, 66 {0, 0x3a, "CountedBuffer"}, 67 {0, 0x3b, "ByteCount"}, 68 {0, 0x3c, "MotionWakeup"}, 69 {0, 0x3d, "Start"}, 70 {0, 0x3e, "Select"}, 71 {0, 0x40, "Vx"}, 72 {0, 0x41, "Vy"}, 73 {0, 0x42, "Vz"}, 74 {0, 0x43, "Vbrx"}, 75 {0, 0x44, "Vbry"}, 76 {0, 0x45, "Vbrz"}, 77 {0, 0x46, "Vno"}, 78 {0, 0x80, "SystemControl"}, 79 {0, 0x81, "SystemPowerDown"}, 80 {0, 0x82, "SystemSleep"}, 81 {0, 0x83, "SystemWakeUp"}, 82 {0, 0x84, "SystemContextMenu"}, 83 {0, 0x85, "SystemMainMenu"}, 84 {0, 0x86, "SystemAppMenu"}, 85 {0, 0x87, "SystemMenuHelp"}, 86 {0, 0x88, "SystemMenuExit"}, 87 {0, 0x89, "SystemMenuSelect"}, 88 {0, 0x8a, "SystemMenuRight"}, 89 {0, 0x8b, "SystemMenuLeft"}, 90 {0, 0x8c, "SystemMenuUp"}, 91 {0, 0x8d, "SystemMenuDown"}, 92 {0, 0x90, "D-PadUp"}, 93 {0, 0x91, "D-PadDown"}, 94 {0, 0x92, "D-PadRight"}, 95 {0, 0x93, "D-PadLeft"}, 96 { 2, 0, "Simulation" }, 97 {0, 0xb0, "Aileron"}, 98 {0, 0xb1, "AileronTrim"}, 99 {0, 0xb2, "Anti-Torque"}, 100 {0, 0xb3, "Autopilot"}, 101 {0, 0xb4, "Chaff"}, 102 {0, 0xb5, "Collective"}, 103 {0, 0xb6, "DiveBrake"}, 104 {0, 0xb7, "ElectronicCountermeasures"}, 105 {0, 0xb8, "Elevator"}, 106 {0, 0xb9, "ElevatorTrim"}, 107 {0, 0xba, "Rudder"}, 108 {0, 0xbb, "Throttle"}, 109 {0, 0xbc, "FlightCommunications"}, 110 {0, 0xbd, "FlareRelease"}, 111 {0, 0xbe, "LandingGear"}, 112 {0, 0xbf, "ToeBrake"}, 113 { 7, 0, "Keyboard" }, 114 { 8, 0, "LED" }, 115 {0, 0x01, "NumLock"}, 116 {0, 0x02, "CapsLock"}, 117 {0, 0x03, "ScrollLock"}, 118 {0, 0x04, "Compose"}, 119 {0, 0x05, "Kana"}, 120 {0, 0x4b, "GenericIndicator"}, 121 { 9, 0, "Button" }, 122 { 10, 0, "Ordinal" }, 123 { 12, 0, "Consumer" }, 124 {0, 0x238, "HorizontalWheel"}, 125 { 13, 0, "Digitizers" }, 126 {0, 0x01, "Digitizer"}, 127 {0, 0x02, "Pen"}, 128 {0, 0x03, "LightPen"}, 129 {0, 0x04, "TouchScreen"}, 130 {0, 0x05, "TouchPad"}, 131 {0, 0x20, "Stylus"}, 132 {0, 0x21, "Puck"}, 133 {0, 0x22, "Finger"}, 134 {0, 0x30, "TipPressure"}, 135 {0, 0x31, "BarrelPressure"}, 136 {0, 0x32, "InRange"}, 137 {0, 0x33, "Touch"}, 138 {0, 0x34, "UnTouch"}, 139 {0, 0x35, "Tap"}, 140 {0, 0x39, "TabletFunctionKey"}, 141 {0, 0x3a, "ProgramChangeKey"}, 142 {0, 0x3c, "Invert"}, 143 {0, 0x42, "TipSwitch"}, 144 {0, 0x43, "SecondaryTipSwitch"}, 145 {0, 0x44, "BarrelSwitch"}, 146 {0, 0x45, "Eraser"}, 147 {0, 0x46, "TabletPick"}, 148 {0, 0x47, "Confidence"}, 149 {0, 0x48, "Width"}, 150 {0, 0x49, "Height"}, 151 {0, 0x51, "ContactID"}, 152 {0, 0x52, "InputMode"}, 153 {0, 0x53, "DeviceIndex"}, 154 {0, 0x54, "ContactCount"}, 155 {0, 0x55, "ContactMaximumNumber"}, 156 { 15, 0, "PhysicalInterfaceDevice" }, 157 {0, 0x00, "Undefined"}, 158 {0, 0x01, "Physical_Interface_Device"}, 159 {0, 0x20, "Normal"}, 160 {0, 0x21, "Set_Effect_Report"}, 161 {0, 0x22, "Effect_Block_Index"}, 162 {0, 0x23, "Parameter_Block_Offset"}, 163 {0, 0x24, "ROM_Flag"}, 164 {0, 0x25, "Effect_Type"}, 165 {0, 0x26, "ET_Constant_Force"}, 166 {0, 0x27, "ET_Ramp"}, 167 {0, 0x28, "ET_Custom_Force_Data"}, 168 {0, 0x30, "ET_Square"}, 169 {0, 0x31, "ET_Sine"}, 170 {0, 0x32, "ET_Triangle"}, 171 {0, 0x33, "ET_Sawtooth_Up"}, 172 {0, 0x34, "ET_Sawtooth_Down"}, 173 {0, 0x40, "ET_Spring"}, 174 {0, 0x41, "ET_Damper"}, 175 {0, 0x42, "ET_Inertia"}, 176 {0, 0x43, "ET_Friction"}, 177 {0, 0x50, "Duration"}, 178 {0, 0x51, "Sample_Period"}, 179 {0, 0x52, "Gain"}, 180 {0, 0x53, "Trigger_Button"}, 181 {0, 0x54, "Trigger_Repeat_Interval"}, 182 {0, 0x55, "Axes_Enable"}, 183 {0, 0x56, "Direction_Enable"}, 184 {0, 0x57, "Direction"}, 185 {0, 0x58, "Type_Specific_Block_Offset"}, 186 {0, 0x59, "Block_Type"}, 187 {0, 0x5A, "Set_Envelope_Report"}, 188 {0, 0x5B, "Attack_Level"}, 189 {0, 0x5C, "Attack_Time"}, 190 {0, 0x5D, "Fade_Level"}, 191 {0, 0x5E, "Fade_Time"}, 192 {0, 0x5F, "Set_Condition_Report"}, 193 {0, 0x60, "CP_Offset"}, 194 {0, 0x61, "Positive_Coefficient"}, 195 {0, 0x62, "Negative_Coefficient"}, 196 {0, 0x63, "Positive_Saturation"}, 197 {0, 0x64, "Negative_Saturation"}, 198 {0, 0x65, "Dead_Band"}, 199 {0, 0x66, "Download_Force_Sample"}, 200 {0, 0x67, "Isoch_Custom_Force_Enable"}, 201 {0, 0x68, "Custom_Force_Data_Report"}, 202 {0, 0x69, "Custom_Force_Data"}, 203 {0, 0x6A, "Custom_Force_Vendor_Defined_Data"}, 204 {0, 0x6B, "Set_Custom_Force_Report"}, 205 {0, 0x6C, "Custom_Force_Data_Offset"}, 206 {0, 0x6D, "Sample_Count"}, 207 {0, 0x6E, "Set_Periodic_Report"}, 208 {0, 0x6F, "Offset"}, 209 {0, 0x70, "Magnitude"}, 210 {0, 0x71, "Phase"}, 211 {0, 0x72, "Period"}, 212 {0, 0x73, "Set_Constant_Force_Report"}, 213 {0, 0x74, "Set_Ramp_Force_Report"}, 214 {0, 0x75, "Ramp_Start"}, 215 {0, 0x76, "Ramp_End"}, 216 {0, 0x77, "Effect_Operation_Report"}, 217 {0, 0x78, "Effect_Operation"}, 218 {0, 0x79, "Op_Effect_Start"}, 219 {0, 0x7A, "Op_Effect_Start_Solo"}, 220 {0, 0x7B, "Op_Effect_Stop"}, 221 {0, 0x7C, "Loop_Count"}, 222 {0, 0x7D, "Device_Gain_Report"}, 223 {0, 0x7E, "Device_Gain"}, 224 {0, 0x7F, "PID_Pool_Report"}, 225 {0, 0x80, "RAM_Pool_Size"}, 226 {0, 0x81, "ROM_Pool_Size"}, 227 {0, 0x82, "ROM_Effect_Block_Count"}, 228 {0, 0x83, "Simultaneous_Effects_Max"}, 229 {0, 0x84, "Pool_Alignment"}, 230 {0, 0x85, "PID_Pool_Move_Report"}, 231 {0, 0x86, "Move_Source"}, 232 {0, 0x87, "Move_Destination"}, 233 {0, 0x88, "Move_Length"}, 234 {0, 0x89, "PID_Block_Load_Report"}, 235 {0, 0x8B, "Block_Load_Status"}, 236 {0, 0x8C, "Block_Load_Success"}, 237 {0, 0x8D, "Block_Load_Full"}, 238 {0, 0x8E, "Block_Load_Error"}, 239 {0, 0x8F, "Block_Handle"}, 240 {0, 0x90, "PID_Block_Free_Report"}, 241 {0, 0x91, "Type_Specific_Block_Handle"}, 242 {0, 0x92, "PID_State_Report"}, 243 {0, 0x94, "Effect_Playing"}, 244 {0, 0x95, "PID_Device_Control_Report"}, 245 {0, 0x96, "PID_Device_Control"}, 246 {0, 0x97, "DC_Enable_Actuators"}, 247 {0, 0x98, "DC_Disable_Actuators"}, 248 {0, 0x99, "DC_Stop_All_Effects"}, 249 {0, 0x9A, "DC_Device_Reset"}, 250 {0, 0x9B, "DC_Device_Pause"}, 251 {0, 0x9C, "DC_Device_Continue"}, 252 {0, 0x9F, "Device_Paused"}, 253 {0, 0xA0, "Actuators_Enabled"}, 254 {0, 0xA4, "Safety_Switch"}, 255 {0, 0xA5, "Actuator_Override_Switch"}, 256 {0, 0xA6, "Actuator_Power"}, 257 {0, 0xA7, "Start_Delay"}, 258 {0, 0xA8, "Parameter_Block_Size"}, 259 {0, 0xA9, "Device_Managed_Pool"}, 260 {0, 0xAA, "Shared_Parameter_Blocks"}, 261 {0, 0xAB, "Create_New_Effect_Report"}, 262 {0, 0xAC, "RAM_Pool_Available"}, 263 { 0x84, 0, "Power Device" }, 264 { 0x84, 0x02, "PresentStatus" }, 265 { 0x84, 0x03, "ChangeStatus" }, 266 { 0x84, 0x04, "UPS" }, 267 { 0x84, 0x05, "PowerSupply" }, 268 { 0x84, 0x10, "BatterySystem" }, 269 { 0x84, 0x11, "BatterySystemID" }, 270 { 0x84, 0x12, "Battery" }, 271 { 0x84, 0x13, "BatteryID" }, 272 { 0x84, 0x14, "Charger" }, 273 { 0x84, 0x15, "ChargerID" }, 274 { 0x84, 0x16, "PowerConverter" }, 275 { 0x84, 0x17, "PowerConverterID" }, 276 { 0x84, 0x18, "OutletSystem" }, 277 { 0x84, 0x19, "OutletSystemID" }, 278 { 0x84, 0x1a, "Input" }, 279 { 0x84, 0x1b, "InputID" }, 280 { 0x84, 0x1c, "Output" }, 281 { 0x84, 0x1d, "OutputID" }, 282 { 0x84, 0x1e, "Flow" }, 283 { 0x84, 0x1f, "FlowID" }, 284 { 0x84, 0x20, "Outlet" }, 285 { 0x84, 0x21, "OutletID" }, 286 { 0x84, 0x22, "Gang" }, 287 { 0x84, 0x24, "PowerSummary" }, 288 { 0x84, 0x25, "PowerSummaryID" }, 289 { 0x84, 0x30, "Voltage" }, 290 { 0x84, 0x31, "Current" }, 291 { 0x84, 0x32, "Frequency" }, 292 { 0x84, 0x33, "ApparentPower" }, 293 { 0x84, 0x35, "PercentLoad" }, 294 { 0x84, 0x40, "ConfigVoltage" }, 295 { 0x84, 0x41, "ConfigCurrent" }, 296 { 0x84, 0x43, "ConfigApparentPower" }, 297 { 0x84, 0x53, "LowVoltageTransfer" }, 298 { 0x84, 0x54, "HighVoltageTransfer" }, 299 { 0x84, 0x56, "DelayBeforeStartup" }, 300 { 0x84, 0x57, "DelayBeforeShutdown" }, 301 { 0x84, 0x58, "Test" }, 302 { 0x84, 0x5a, "AudibleAlarmControl" }, 303 { 0x84, 0x60, "Present" }, 304 { 0x84, 0x61, "Good" }, 305 { 0x84, 0x62, "InternalFailure" }, 306 { 0x84, 0x65, "Overload" }, 307 { 0x84, 0x66, "OverCharged" }, 308 { 0x84, 0x67, "OverTemperature" }, 309 { 0x84, 0x68, "ShutdownRequested" }, 310 { 0x84, 0x69, "ShutdownImminent" }, 311 { 0x84, 0x6b, "SwitchOn/Off" }, 312 { 0x84, 0x6c, "Switchable" }, 313 { 0x84, 0x6d, "Used" }, 314 { 0x84, 0x6e, "Boost" }, 315 { 0x84, 0x73, "CommunicationLost" }, 316 { 0x84, 0xfd, "iManufacturer" }, 317 { 0x84, 0xfe, "iProduct" }, 318 { 0x84, 0xff, "iSerialNumber" }, 319 { 0x85, 0, "Battery System" }, 320 { 0x85, 0x01, "SMBBatteryMode" }, 321 { 0x85, 0x02, "SMBBatteryStatus" }, 322 { 0x85, 0x03, "SMBAlarmWarning" }, 323 { 0x85, 0x04, "SMBChargerMode" }, 324 { 0x85, 0x05, "SMBChargerStatus" }, 325 { 0x85, 0x06, "SMBChargerSpecInfo" }, 326 { 0x85, 0x07, "SMBSelectorState" }, 327 { 0x85, 0x08, "SMBSelectorPresets" }, 328 { 0x85, 0x09, "SMBSelectorInfo" }, 329 { 0x85, 0x29, "RemainingCapacityLimit" }, 330 { 0x85, 0x2c, "CapacityMode" }, 331 { 0x85, 0x42, "BelowRemainingCapacityLimit" }, 332 { 0x85, 0x44, "Charging" }, 333 { 0x85, 0x45, "Discharging" }, 334 { 0x85, 0x4b, "NeedReplacement" }, 335 { 0x85, 0x66, "RemainingCapacity" }, 336 { 0x85, 0x68, "RunTimeToEmpty" }, 337 { 0x85, 0x6a, "AverageTimeToFull" }, 338 { 0x85, 0x83, "DesignCapacity" }, 339 { 0x85, 0x85, "ManufacturerDate" }, 340 { 0x85, 0x89, "iDeviceChemistry" }, 341 { 0x85, 0x8b, "Rechargable" }, 342 { 0x85, 0x8f, "iOEMInformation" }, 343 { 0x85, 0x8d, "CapacityGranularity1" }, 344 { 0x85, 0xd0, "ACPresent" }, 345 /* pages 0xff00 to 0xffff are vendor-specific */ 346 { 0xffff, 0, "Vendor-specific-FF" }, 347 { 0, 0, NULL } 348 }; 349 350 /* Either output directly into simple seq_file, or (if f == NULL) 351 * allocate a separate buffer that will then be passed to the 'events' 352 * ringbuffer. 353 * 354 * This is because these functions can be called both for "one-shot" 355 * "rdesc" while resolving, or for blocking "events". 356 * 357 * This holds both for resolv_usage_page() and hid_resolv_usage(). 358 */ 359 static char *resolv_usage_page(unsigned page, struct seq_file *f) { 360 const struct hid_usage_entry *p; 361 char *buf = NULL; 362 363 if (!f) { 364 buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); 365 if (!buf) 366 return ERR_PTR(-ENOMEM); 367 } 368 369 for (p = hid_usage_table; p->description; p++) 370 if (p->page == page) { 371 if (!f) { 372 snprintf(buf, HID_DEBUG_BUFSIZE, "%s", 373 p->description); 374 return buf; 375 } 376 else { 377 seq_printf(f, "%s", p->description); 378 return NULL; 379 } 380 } 381 if (!f) 382 snprintf(buf, HID_DEBUG_BUFSIZE, "%04x", page); 383 else 384 seq_printf(f, "%04x", page); 385 return buf; 386 } 387 388 char *hid_resolv_usage(unsigned usage, struct seq_file *f) { 389 const struct hid_usage_entry *p; 390 char *buf = NULL; 391 int len = 0; 392 393 buf = resolv_usage_page(usage >> 16, f); 394 if (IS_ERR(buf)) { 395 printk(KERN_ERR "error allocating HID debug buffer\n"); 396 return NULL; 397 } 398 399 400 if (!f) { 401 len = strlen(buf); 402 snprintf(buf+len, max(0, HID_DEBUG_BUFSIZE - len), "."); 403 len++; 404 } 405 else { 406 seq_printf(f, "."); 407 } 408 for (p = hid_usage_table; p->description; p++) 409 if (p->page == (usage >> 16)) { 410 for(++p; p->description && p->usage != 0; p++) 411 if (p->usage == (usage & 0xffff)) { 412 if (!f) 413 snprintf(buf + len, 414 max(0,HID_DEBUG_BUFSIZE - len - 1), 415 "%s", p->description); 416 else 417 seq_printf(f, 418 "%s", 419 p->description); 420 return buf; 421 } 422 break; 423 } 424 if (!f) 425 snprintf(buf + len, max(0, HID_DEBUG_BUFSIZE - len - 1), 426 "%04x", usage & 0xffff); 427 else 428 seq_printf(f, "%04x", usage & 0xffff); 429 return buf; 430 } 431 EXPORT_SYMBOL_GPL(hid_resolv_usage); 432 433 static void tab(int n, struct seq_file *f) { 434 seq_printf(f, "%*s", n, ""); 435 } 436 437 void hid_dump_field(struct hid_field *field, int n, struct seq_file *f) { 438 int j; 439 440 if (field->physical) { 441 tab(n, f); 442 seq_printf(f, "Physical("); 443 hid_resolv_usage(field->physical, f); seq_printf(f, ")\n"); 444 } 445 if (field->logical) { 446 tab(n, f); 447 seq_printf(f, "Logical("); 448 hid_resolv_usage(field->logical, f); seq_printf(f, ")\n"); 449 } 450 tab(n, f); seq_printf(f, "Usage(%d)\n", field->maxusage); 451 for (j = 0; j < field->maxusage; j++) { 452 tab(n+2, f); hid_resolv_usage(field->usage[j].hid, f); seq_printf(f, "\n"); 453 } 454 if (field->logical_minimum != field->logical_maximum) { 455 tab(n, f); seq_printf(f, "Logical Minimum(%d)\n", field->logical_minimum); 456 tab(n, f); seq_printf(f, "Logical Maximum(%d)\n", field->logical_maximum); 457 } 458 if (field->physical_minimum != field->physical_maximum) { 459 tab(n, f); seq_printf(f, "Physical Minimum(%d)\n", field->physical_minimum); 460 tab(n, f); seq_printf(f, "Physical Maximum(%d)\n", field->physical_maximum); 461 } 462 if (field->unit_exponent) { 463 tab(n, f); seq_printf(f, "Unit Exponent(%d)\n", field->unit_exponent); 464 } 465 if (field->unit) { 466 static const char *systems[5] = { "None", "SI Linear", "SI Rotation", "English Linear", "English Rotation" }; 467 static const char *units[5][8] = { 468 { "None", "None", "None", "None", "None", "None", "None", "None" }, 469 { "None", "Centimeter", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" }, 470 { "None", "Radians", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" }, 471 { "None", "Inch", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" }, 472 { "None", "Degrees", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" } 473 }; 474 475 int i; 476 int sys; 477 __u32 data = field->unit; 478 479 /* First nibble tells us which system we're in. */ 480 sys = data & 0xf; 481 data >>= 4; 482 483 if(sys > 4) { 484 tab(n, f); seq_printf(f, "Unit(Invalid)\n"); 485 } 486 else { 487 int earlier_unit = 0; 488 489 tab(n, f); seq_printf(f, "Unit(%s : ", systems[sys]); 490 491 for (i=1 ; i<sizeof(__u32)*2 ; i++) { 492 char nibble = data & 0xf; 493 data >>= 4; 494 if (nibble != 0) { 495 if(earlier_unit++ > 0) 496 seq_printf(f, "*"); 497 seq_printf(f, "%s", units[sys][i]); 498 if(nibble != 1) { 499 /* This is a _signed_ nibble(!) */ 500 501 int val = nibble & 0x7; 502 if(nibble & 0x08) 503 val = -((0x7 & ~val) +1); 504 seq_printf(f, "^%d", val); 505 } 506 } 507 } 508 seq_printf(f, ")\n"); 509 } 510 } 511 tab(n, f); seq_printf(f, "Report Size(%u)\n", field->report_size); 512 tab(n, f); seq_printf(f, "Report Count(%u)\n", field->report_count); 513 tab(n, f); seq_printf(f, "Report Offset(%u)\n", field->report_offset); 514 515 tab(n, f); seq_printf(f, "Flags( "); 516 j = field->flags; 517 seq_printf(f, "%s", HID_MAIN_ITEM_CONSTANT & j ? "Constant " : ""); 518 seq_printf(f, "%s", HID_MAIN_ITEM_VARIABLE & j ? "Variable " : "Array "); 519 seq_printf(f, "%s", HID_MAIN_ITEM_RELATIVE & j ? "Relative " : "Absolute "); 520 seq_printf(f, "%s", HID_MAIN_ITEM_WRAP & j ? "Wrap " : ""); 521 seq_printf(f, "%s", HID_MAIN_ITEM_NONLINEAR & j ? "NonLinear " : ""); 522 seq_printf(f, "%s", HID_MAIN_ITEM_NO_PREFERRED & j ? "NoPreferredState " : ""); 523 seq_printf(f, "%s", HID_MAIN_ITEM_NULL_STATE & j ? "NullState " : ""); 524 seq_printf(f, "%s", HID_MAIN_ITEM_VOLATILE & j ? "Volatile " : ""); 525 seq_printf(f, "%s", HID_MAIN_ITEM_BUFFERED_BYTE & j ? "BufferedByte " : ""); 526 seq_printf(f, ")\n"); 527 } 528 EXPORT_SYMBOL_GPL(hid_dump_field); 529 530 void hid_dump_device(struct hid_device *device, struct seq_file *f) 531 { 532 struct hid_report_enum *report_enum; 533 struct hid_report *report; 534 struct list_head *list; 535 unsigned i,k; 536 static const char *table[] = {"INPUT", "OUTPUT", "FEATURE"}; 537 538 for (i = 0; i < HID_REPORT_TYPES; i++) { 539 report_enum = device->report_enum + i; 540 list = report_enum->report_list.next; 541 while (list != &report_enum->report_list) { 542 report = (struct hid_report *) list; 543 tab(2, f); 544 seq_printf(f, "%s", table[i]); 545 if (report->id) 546 seq_printf(f, "(%d)", report->id); 547 seq_printf(f, "[%s]", table[report->type]); 548 seq_printf(f, "\n"); 549 for (k = 0; k < report->maxfield; k++) { 550 tab(4, f); 551 seq_printf(f, "Field(%d)\n", k); 552 hid_dump_field(report->field[k], 6, f); 553 } 554 list = list->next; 555 } 556 } 557 } 558 EXPORT_SYMBOL_GPL(hid_dump_device); 559 560 /* enqueue string to 'events' ring buffer */ 561 void hid_debug_event(struct hid_device *hdev, char *buf) 562 { 563 int i; 564 struct hid_debug_list *list; 565 566 list_for_each_entry(list, &hdev->debug_list, node) { 567 for (i = 0; i <= strlen(buf); i++) 568 list->hid_debug_buf[(list->tail + i) % (HID_DEBUG_BUFSIZE - 1)] = 569 buf[i]; 570 list->tail = (list->tail + i) % (HID_DEBUG_BUFSIZE - 1); 571 } 572 } 573 EXPORT_SYMBOL_GPL(hid_debug_event); 574 575 void hid_dump_input(struct hid_device *hdev, struct hid_usage *usage, __s32 value) 576 { 577 char *buf; 578 int len; 579 580 buf = hid_resolv_usage(usage->hid, NULL); 581 if (!buf) 582 return; 583 len = strlen(buf); 584 snprintf(buf + len, HID_DEBUG_BUFSIZE - len - 1, " = %d\n", value); 585 586 hid_debug_event(hdev, buf); 587 588 kfree(buf); 589 wake_up_interruptible(&hdev->debug_wait); 590 591 } 592 EXPORT_SYMBOL_GPL(hid_dump_input); 593 594 static const char *events[EV_MAX + 1] = { 595 [EV_SYN] = "Sync", [EV_KEY] = "Key", 596 [EV_REL] = "Relative", [EV_ABS] = "Absolute", 597 [EV_MSC] = "Misc", [EV_LED] = "LED", 598 [EV_SND] = "Sound", [EV_REP] = "Repeat", 599 [EV_FF] = "ForceFeedback", [EV_PWR] = "Power", 600 [EV_FF_STATUS] = "ForceFeedbackStatus", 601 }; 602 603 static const char *syncs[3] = { 604 [SYN_REPORT] = "Report", [SYN_CONFIG] = "Config", 605 [SYN_MT_REPORT] = "MT Report", 606 }; 607 608 static const char *keys[KEY_MAX + 1] = { 609 [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc", 610 [KEY_1] = "1", [KEY_2] = "2", 611 [KEY_3] = "3", [KEY_4] = "4", 612 [KEY_5] = "5", [KEY_6] = "6", 613 [KEY_7] = "7", [KEY_8] = "8", 614 [KEY_9] = "9", [KEY_0] = "0", 615 [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal", 616 [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab", 617 [KEY_Q] = "Q", [KEY_W] = "W", 618 [KEY_E] = "E", [KEY_R] = "R", 619 [KEY_T] = "T", [KEY_Y] = "Y", 620 [KEY_U] = "U", [KEY_I] = "I", 621 [KEY_O] = "O", [KEY_P] = "P", 622 [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace", 623 [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl", 624 [KEY_A] = "A", [KEY_S] = "S", 625 [KEY_D] = "D", [KEY_F] = "F", 626 [KEY_G] = "G", [KEY_H] = "H", 627 [KEY_J] = "J", [KEY_K] = "K", 628 [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon", 629 [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave", 630 [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash", 631 [KEY_Z] = "Z", [KEY_X] = "X", 632 [KEY_C] = "C", [KEY_V] = "V", 633 [KEY_B] = "B", [KEY_N] = "N", 634 [KEY_M] = "M", [KEY_COMMA] = "Comma", 635 [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash", 636 [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk", 637 [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space", 638 [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1", 639 [KEY_F2] = "F2", [KEY_F3] = "F3", 640 [KEY_F4] = "F4", [KEY_F5] = "F5", 641 [KEY_F6] = "F6", [KEY_F7] = "F7", 642 [KEY_F8] = "F8", [KEY_F9] = "F9", 643 [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock", 644 [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7", 645 [KEY_KP8] = "KP8", [KEY_KP9] = "KP9", 646 [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4", 647 [KEY_KP5] = "KP5", [KEY_KP6] = "KP6", 648 [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1", 649 [KEY_KP2] = "KP2", [KEY_KP3] = "KP3", 650 [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot", 651 [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd", 652 [KEY_F11] = "F11", [KEY_F12] = "F12", 653 [KEY_RO] = "RO", [KEY_KATAKANA] = "Katakana", 654 [KEY_HIRAGANA] = "HIRAGANA", [KEY_HENKAN] = "Henkan", 655 [KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan", 656 [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter", 657 [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash", 658 [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt", 659 [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home", 660 [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp", 661 [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right", 662 [KEY_END] = "End", [KEY_DOWN] = "Down", 663 [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert", 664 [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro", 665 [KEY_MUTE] = "Mute", [KEY_VOLUMEDOWN] = "VolumeDown", 666 [KEY_VOLUMEUP] = "VolumeUp", [KEY_POWER] = "Power", 667 [KEY_KPEQUAL] = "KPEqual", [KEY_KPPLUSMINUS] = "KPPlusMinus", 668 [KEY_PAUSE] = "Pause", [KEY_KPCOMMA] = "KPComma", 669 [KEY_HANGUEL] = "Hangeul", [KEY_HANJA] = "Hanja", 670 [KEY_YEN] = "Yen", [KEY_LEFTMETA] = "LeftMeta", 671 [KEY_RIGHTMETA] = "RightMeta", [KEY_COMPOSE] = "Compose", 672 [KEY_STOP] = "Stop", [KEY_AGAIN] = "Again", 673 [KEY_PROPS] = "Props", [KEY_UNDO] = "Undo", 674 [KEY_FRONT] = "Front", [KEY_COPY] = "Copy", 675 [KEY_OPEN] = "Open", [KEY_PASTE] = "Paste", 676 [KEY_FIND] = "Find", [KEY_CUT] = "Cut", 677 [KEY_HELP] = "Help", [KEY_MENU] = "Menu", 678 [KEY_CALC] = "Calc", [KEY_SETUP] = "Setup", 679 [KEY_SLEEP] = "Sleep", [KEY_WAKEUP] = "WakeUp", 680 [KEY_FILE] = "File", [KEY_SENDFILE] = "SendFile", 681 [KEY_DELETEFILE] = "DeleteFile", [KEY_XFER] = "X-fer", 682 [KEY_PROG1] = "Prog1", [KEY_PROG2] = "Prog2", 683 [KEY_WWW] = "WWW", [KEY_MSDOS] = "MSDOS", 684 [KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction", 685 [KEY_CYCLEWINDOWS] = "CycleWindows", [KEY_MAIL] = "Mail", 686 [KEY_BOOKMARKS] = "Bookmarks", [KEY_COMPUTER] = "Computer", 687 [KEY_BACK] = "Back", [KEY_FORWARD] = "Forward", 688 [KEY_CLOSECD] = "CloseCD", [KEY_EJECTCD] = "EjectCD", 689 [KEY_EJECTCLOSECD] = "EjectCloseCD", [KEY_NEXTSONG] = "NextSong", 690 [KEY_PLAYPAUSE] = "PlayPause", [KEY_PREVIOUSSONG] = "PreviousSong", 691 [KEY_STOPCD] = "StopCD", [KEY_RECORD] = "Record", 692 [KEY_REWIND] = "Rewind", [KEY_PHONE] = "Phone", 693 [KEY_ISO] = "ISOKey", [KEY_CONFIG] = "Config", 694 [KEY_HOMEPAGE] = "HomePage", [KEY_REFRESH] = "Refresh", 695 [KEY_EXIT] = "Exit", [KEY_MOVE] = "Move", 696 [KEY_EDIT] = "Edit", [KEY_SCROLLUP] = "ScrollUp", 697 [KEY_SCROLLDOWN] = "ScrollDown", [KEY_KPLEFTPAREN] = "KPLeftParenthesis", 698 [KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_NEW] = "New", 699 [KEY_REDO] = "Redo", [KEY_F13] = "F13", 700 [KEY_F14] = "F14", [KEY_F15] = "F15", 701 [KEY_F16] = "F16", [KEY_F17] = "F17", 702 [KEY_F18] = "F18", [KEY_F19] = "F19", 703 [KEY_F20] = "F20", [KEY_F21] = "F21", 704 [KEY_F22] = "F22", [KEY_F23] = "F23", 705 [KEY_F24] = "F24", [KEY_PLAYCD] = "PlayCD", 706 [KEY_PAUSECD] = "PauseCD", [KEY_PROG3] = "Prog3", 707 [KEY_PROG4] = "Prog4", [KEY_SUSPEND] = "Suspend", 708 [KEY_CLOSE] = "Close", [KEY_PLAY] = "Play", 709 [KEY_FASTFORWARD] = "FastForward", [KEY_BASSBOOST] = "BassBoost", 710 [KEY_PRINT] = "Print", [KEY_HP] = "HP", 711 [KEY_CAMERA] = "Camera", [KEY_SOUND] = "Sound", 712 [KEY_QUESTION] = "Question", [KEY_EMAIL] = "Email", 713 [KEY_CHAT] = "Chat", [KEY_SEARCH] = "Search", 714 [KEY_CONNECT] = "Connect", [KEY_FINANCE] = "Finance", 715 [KEY_SPORT] = "Sport", [KEY_SHOP] = "Shop", 716 [KEY_ALTERASE] = "AlternateErase", [KEY_CANCEL] = "Cancel", 717 [KEY_BRIGHTNESSDOWN] = "BrightnessDown", [KEY_BRIGHTNESSUP] = "BrightnessUp", 718 [KEY_MEDIA] = "Media", [KEY_UNKNOWN] = "Unknown", 719 [BTN_0] = "Btn0", [BTN_1] = "Btn1", 720 [BTN_2] = "Btn2", [BTN_3] = "Btn3", 721 [BTN_4] = "Btn4", [BTN_5] = "Btn5", 722 [BTN_6] = "Btn6", [BTN_7] = "Btn7", 723 [BTN_8] = "Btn8", [BTN_9] = "Btn9", 724 [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn", 725 [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn", 726 [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn", 727 [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn", 728 [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn", 729 [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn", 730 [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn", 731 [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2", 732 [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4", 733 [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6", 734 [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA", 735 [BTN_B] = "BtnB", [BTN_C] = "BtnC", 736 [BTN_X] = "BtnX", [BTN_Y] = "BtnY", 737 [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL", 738 [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2", 739 [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect", 740 [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode", 741 [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR", 742 [BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber", 743 [BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil", 744 [BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger", 745 [BTN_TOOL_MOUSE] = "ToolMouse", [BTN_TOOL_LENS] = "ToolLens", 746 [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus", 747 [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "ToolDoubleTap", 748 [BTN_TOOL_TRIPLETAP] = "ToolTripleTap", [BTN_GEAR_DOWN] = "WheelBtn", 749 [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok", 750 [KEY_SELECT] = "Select", [KEY_GOTO] = "Goto", 751 [KEY_CLEAR] = "Clear", [KEY_POWER2] = "Power2", 752 [KEY_OPTION] = "Option", [KEY_INFO] = "Info", 753 [KEY_TIME] = "Time", [KEY_VENDOR] = "Vendor", 754 [KEY_ARCHIVE] = "Archive", [KEY_PROGRAM] = "Program", 755 [KEY_CHANNEL] = "Channel", [KEY_FAVORITES] = "Favorites", 756 [KEY_EPG] = "EPG", [KEY_PVR] = "PVR", 757 [KEY_MHP] = "MHP", [KEY_LANGUAGE] = "Language", 758 [KEY_TITLE] = "Title", [KEY_SUBTITLE] = "Subtitle", 759 [KEY_ANGLE] = "Angle", [KEY_ZOOM] = "Zoom", 760 [KEY_MODE] = "Mode", [KEY_KEYBOARD] = "Keyboard", 761 [KEY_SCREEN] = "Screen", [KEY_PC] = "PC", 762 [KEY_TV] = "TV", [KEY_TV2] = "TV2", 763 [KEY_VCR] = "VCR", [KEY_VCR2] = "VCR2", 764 [KEY_SAT] = "Sat", [KEY_SAT2] = "Sat2", 765 [KEY_CD] = "CD", [KEY_TAPE] = "Tape", 766 [KEY_RADIO] = "Radio", [KEY_TUNER] = "Tuner", 767 [KEY_PLAYER] = "Player", [KEY_TEXT] = "Text", 768 [KEY_DVD] = "DVD", [KEY_AUX] = "Aux", 769 [KEY_MP3] = "MP3", [KEY_AUDIO] = "Audio", 770 [KEY_VIDEO] = "Video", [KEY_DIRECTORY] = "Directory", 771 [KEY_LIST] = "List", [KEY_MEMO] = "Memo", 772 [KEY_CALENDAR] = "Calendar", [KEY_RED] = "Red", 773 [KEY_GREEN] = "Green", [KEY_YELLOW] = "Yellow", 774 [KEY_BLUE] = "Blue", [KEY_CHANNELUP] = "ChannelUp", 775 [KEY_CHANNELDOWN] = "ChannelDown", [KEY_FIRST] = "First", 776 [KEY_LAST] = "Last", [KEY_AB] = "AB", 777 [KEY_NEXT] = "Next", [KEY_RESTART] = "Restart", 778 [KEY_SLOW] = "Slow", [KEY_SHUFFLE] = "Shuffle", 779 [KEY_BREAK] = "Break", [KEY_PREVIOUS] = "Previous", 780 [KEY_DIGITS] = "Digits", [KEY_TEEN] = "TEEN", 781 [KEY_TWEN] = "TWEN", [KEY_DEL_EOL] = "DeleteEOL", 782 [KEY_DEL_EOS] = "DeleteEOS", [KEY_INS_LINE] = "InsertLine", 783 [KEY_DEL_LINE] = "DeleteLine", 784 [KEY_SEND] = "Send", [KEY_REPLY] = "Reply", 785 [KEY_FORWARDMAIL] = "ForwardMail", [KEY_SAVE] = "Save", 786 [KEY_DOCUMENTS] = "Documents", [KEY_SPELLCHECK] = "SpellCheck", 787 [KEY_LOGOFF] = "Logoff", 788 [KEY_FN] = "Fn", [KEY_FN_ESC] = "Fn+ESC", 789 [KEY_FN_1] = "Fn+1", [KEY_FN_2] = "Fn+2", 790 [KEY_FN_B] = "Fn+B", [KEY_FN_D] = "Fn+D", 791 [KEY_FN_E] = "Fn+E", [KEY_FN_F] = "Fn+F", 792 [KEY_FN_S] = "Fn+S", 793 [KEY_FN_F1] = "Fn+F1", [KEY_FN_F2] = "Fn+F2", 794 [KEY_FN_F3] = "Fn+F3", [KEY_FN_F4] = "Fn+F4", 795 [KEY_FN_F5] = "Fn+F5", [KEY_FN_F6] = "Fn+F6", 796 [KEY_FN_F7] = "Fn+F7", [KEY_FN_F8] = "Fn+F8", 797 [KEY_FN_F9] = "Fn+F9", [KEY_FN_F10] = "Fn+F10", 798 [KEY_FN_F11] = "Fn+F11", [KEY_FN_F12] = "Fn+F12", 799 [KEY_KBDILLUMTOGGLE] = "KbdIlluminationToggle", 800 [KEY_KBDILLUMDOWN] = "KbdIlluminationDown", 801 [KEY_KBDILLUMUP] = "KbdIlluminationUp", 802 [KEY_SWITCHVIDEOMODE] = "SwitchVideoMode", 803 }; 804 805 static const char *relatives[REL_MAX + 1] = { 806 [REL_X] = "X", [REL_Y] = "Y", 807 [REL_Z] = "Z", [REL_RX] = "Rx", 808 [REL_RY] = "Ry", [REL_RZ] = "Rz", 809 [REL_HWHEEL] = "HWheel", [REL_DIAL] = "Dial", 810 [REL_WHEEL] = "Wheel", [REL_MISC] = "Misc", 811 }; 812 813 static const char *absolutes[ABS_MAX + 1] = { 814 [ABS_X] = "X", [ABS_Y] = "Y", 815 [ABS_Z] = "Z", [ABS_RX] = "Rx", 816 [ABS_RY] = "Ry", [ABS_RZ] = "Rz", 817 [ABS_THROTTLE] = "Throttle", [ABS_RUDDER] = "Rudder", 818 [ABS_WHEEL] = "Wheel", [ABS_GAS] = "Gas", 819 [ABS_BRAKE] = "Brake", [ABS_HAT0X] = "Hat0X", 820 [ABS_HAT0Y] = "Hat0Y", [ABS_HAT1X] = "Hat1X", 821 [ABS_HAT1Y] = "Hat1Y", [ABS_HAT2X] = "Hat2X", 822 [ABS_HAT2Y] = "Hat2Y", [ABS_HAT3X] = "Hat3X", 823 [ABS_HAT3Y] = "Hat 3Y", [ABS_PRESSURE] = "Pressure", 824 [ABS_DISTANCE] = "Distance", [ABS_TILT_X] = "XTilt", 825 [ABS_TILT_Y] = "YTilt", [ABS_TOOL_WIDTH] = "ToolWidth", 826 [ABS_VOLUME] = "Volume", [ABS_MISC] = "Misc", 827 [ABS_MT_TOUCH_MAJOR] = "MTMajor", 828 [ABS_MT_TOUCH_MINOR] = "MTMinor", 829 [ABS_MT_WIDTH_MAJOR] = "MTMajorW", 830 [ABS_MT_WIDTH_MINOR] = "MTMinorW", 831 [ABS_MT_ORIENTATION] = "MTOrientation", 832 [ABS_MT_POSITION_X] = "MTPositionX", 833 [ABS_MT_POSITION_Y] = "MTPositionY", 834 [ABS_MT_TOOL_TYPE] = "MTToolType", 835 [ABS_MT_BLOB_ID] = "MTBlobID", 836 }; 837 838 static const char *misc[MSC_MAX + 1] = { 839 [MSC_SERIAL] = "Serial", [MSC_PULSELED] = "Pulseled", 840 [MSC_GESTURE] = "Gesture", [MSC_RAW] = "RawData" 841 }; 842 843 static const char *leds[LED_MAX + 1] = { 844 [LED_NUML] = "NumLock", [LED_CAPSL] = "CapsLock", 845 [LED_SCROLLL] = "ScrollLock", [LED_COMPOSE] = "Compose", 846 [LED_KANA] = "Kana", [LED_SLEEP] = "Sleep", 847 [LED_SUSPEND] = "Suspend", [LED_MUTE] = "Mute", 848 [LED_MISC] = "Misc", 849 }; 850 851 static const char *repeats[REP_MAX + 1] = { 852 [REP_DELAY] = "Delay", [REP_PERIOD] = "Period" 853 }; 854 855 static const char *sounds[SND_MAX + 1] = { 856 [SND_CLICK] = "Click", [SND_BELL] = "Bell", 857 [SND_TONE] = "Tone" 858 }; 859 860 static const char **names[EV_MAX + 1] = { 861 [EV_SYN] = syncs, [EV_KEY] = keys, 862 [EV_REL] = relatives, [EV_ABS] = absolutes, 863 [EV_MSC] = misc, [EV_LED] = leds, 864 [EV_SND] = sounds, [EV_REP] = repeats, 865 }; 866 867 void hid_resolv_event(__u8 type, __u16 code, struct seq_file *f) { 868 869 seq_printf(f, "%s.%s", events[type] ? events[type] : "?", 870 names[type] ? (names[type][code] ? names[type][code] : "?") : "?"); 871 } 872 873 void hid_dump_input_mapping(struct hid_device *hid, struct seq_file *f) 874 { 875 int i, j, k; 876 struct hid_report *report; 877 struct hid_usage *usage; 878 879 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 880 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 881 for (i = 0; i < report->maxfield; i++) { 882 for ( j = 0; j < report->field[i]->maxusage; j++) { 883 usage = report->field[i]->usage + j; 884 hid_resolv_usage(usage->hid, f); 885 seq_printf(f, " ---> "); 886 hid_resolv_event(usage->type, usage->code, f); 887 seq_printf(f, "\n"); 888 } 889 } 890 } 891 } 892 893 } 894 895 896 static int hid_debug_rdesc_show(struct seq_file *f, void *p) 897 { 898 struct hid_device *hdev = f->private; 899 int i; 900 901 /* dump HID report descriptor */ 902 for (i = 0; i < hdev->rsize; i++) 903 seq_printf(f, "%02x ", hdev->rdesc[i]); 904 seq_printf(f, "\n\n"); 905 906 /* dump parsed data and input mappings */ 907 hid_dump_device(hdev, f); 908 seq_printf(f, "\n"); 909 hid_dump_input_mapping(hdev, f); 910 911 return 0; 912 } 913 914 static int hid_debug_rdesc_open(struct inode *inode, struct file *file) 915 { 916 return single_open(file, hid_debug_rdesc_show, inode->i_private); 917 } 918 919 static int hid_debug_events_open(struct inode *inode, struct file *file) 920 { 921 int err = 0; 922 struct hid_debug_list *list; 923 924 if (!(list = kzalloc(sizeof(struct hid_debug_list), GFP_KERNEL))) { 925 err = -ENOMEM; 926 goto out; 927 } 928 929 if (!(list->hid_debug_buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_KERNEL))) { 930 err = -ENOMEM; 931 kfree(list); 932 goto out; 933 } 934 list->hdev = (struct hid_device *) inode->i_private; 935 file->private_data = list; 936 mutex_init(&list->read_mutex); 937 938 list_add_tail(&list->node, &list->hdev->debug_list); 939 940 out: 941 return err; 942 } 943 944 static ssize_t hid_debug_events_read(struct file *file, char __user *buffer, 945 size_t count, loff_t *ppos) 946 { 947 struct hid_debug_list *list = file->private_data; 948 int ret = 0, len; 949 DECLARE_WAITQUEUE(wait, current); 950 951 while (ret == 0) { 952 mutex_lock(&list->read_mutex); 953 if (list->head == list->tail) { 954 add_wait_queue(&list->hdev->debug_wait, &wait); 955 set_current_state(TASK_INTERRUPTIBLE); 956 957 while (list->head == list->tail) { 958 if (file->f_flags & O_NONBLOCK) { 959 ret = -EAGAIN; 960 break; 961 } 962 if (signal_pending(current)) { 963 ret = -ERESTARTSYS; 964 break; 965 } 966 967 if (!list->hdev || !list->hdev->debug) { 968 ret = -EIO; 969 break; 970 } 971 972 /* allow O_NONBLOCK from other threads */ 973 mutex_unlock(&list->read_mutex); 974 schedule(); 975 mutex_lock(&list->read_mutex); 976 set_current_state(TASK_INTERRUPTIBLE); 977 } 978 979 set_current_state(TASK_RUNNING); 980 remove_wait_queue(&list->hdev->debug_wait, &wait); 981 } 982 983 if (ret) 984 goto out; 985 986 /* pass the ringbuffer contents to userspace */ 987 copy_rest: 988 if (list->tail == list->head) 989 goto out; 990 if (list->tail > list->head) { 991 len = list->tail - list->head; 992 993 if (copy_to_user(buffer + ret, &list->hid_debug_buf[list->head], len)) { 994 ret = -EFAULT; 995 goto out; 996 } 997 ret += len; 998 list->head += len; 999 } else { 1000 len = HID_DEBUG_BUFSIZE - list->head; 1001 1002 if (copy_to_user(buffer, &list->hid_debug_buf[list->head], len)) { 1003 ret = -EFAULT; 1004 goto out; 1005 } 1006 list->head = 0; 1007 ret += len; 1008 goto copy_rest; 1009 } 1010 1011 } 1012 out: 1013 mutex_unlock(&list->read_mutex); 1014 return ret; 1015 } 1016 1017 static unsigned int hid_debug_events_poll(struct file *file, poll_table *wait) 1018 { 1019 struct hid_debug_list *list = file->private_data; 1020 1021 poll_wait(file, &list->hdev->debug_wait, wait); 1022 if (list->head != list->tail) 1023 return POLLIN | POLLRDNORM; 1024 if (!list->hdev->debug) 1025 return POLLERR | POLLHUP; 1026 return 0; 1027 } 1028 1029 static int hid_debug_events_release(struct inode *inode, struct file *file) 1030 { 1031 struct hid_debug_list *list = file->private_data; 1032 1033 list_del(&list->node); 1034 kfree(list->hid_debug_buf); 1035 kfree(list); 1036 1037 return 0; 1038 } 1039 1040 static const struct file_operations hid_debug_rdesc_fops = { 1041 .open = hid_debug_rdesc_open, 1042 .read = seq_read, 1043 .llseek = seq_lseek, 1044 .release = single_release, 1045 }; 1046 1047 static const struct file_operations hid_debug_events_fops = { 1048 .owner = THIS_MODULE, 1049 .open = hid_debug_events_open, 1050 .read = hid_debug_events_read, 1051 .poll = hid_debug_events_poll, 1052 .release = hid_debug_events_release, 1053 }; 1054 1055 1056 void hid_debug_register(struct hid_device *hdev, const char *name) 1057 { 1058 hdev->debug_dir = debugfs_create_dir(name, hid_debug_root); 1059 hdev->debug_rdesc = debugfs_create_file("rdesc", 0400, 1060 hdev->debug_dir, hdev, &hid_debug_rdesc_fops); 1061 hdev->debug_events = debugfs_create_file("events", 0400, 1062 hdev->debug_dir, hdev, &hid_debug_events_fops); 1063 hdev->debug = 1; 1064 } 1065 1066 void hid_debug_unregister(struct hid_device *hdev) 1067 { 1068 hdev->debug = 0; 1069 wake_up_interruptible(&hdev->debug_wait); 1070 debugfs_remove(hdev->debug_rdesc); 1071 debugfs_remove(hdev->debug_events); 1072 debugfs_remove(hdev->debug_dir); 1073 } 1074 1075 void hid_debug_init(void) 1076 { 1077 hid_debug_root = debugfs_create_dir("hid", NULL); 1078 } 1079 1080 void hid_debug_exit(void) 1081 { 1082 debugfs_remove_recursive(hid_debug_root); 1083 } 1084 1085