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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 30 31 #include <linux/debugfs.h> 32 #include <linux/seq_file.h> 33 #include <linux/sched/signal.h> 34 #include <linux/export.h> 35 #include <linux/slab.h> 36 #include <linux/uaccess.h> 37 #include <linux/poll.h> 38 39 #include <linux/hid.h> 40 #include <linux/hid-debug.h> 41 42 static struct dentry *hid_debug_root; 43 44 struct hid_usage_entry { 45 unsigned page; 46 unsigned usage; 47 const char *description; 48 }; 49 50 static const struct hid_usage_entry hid_usage_table[] = { 51 { 0, 0, "Undefined" }, 52 { 1, 0, "GenericDesktop" }, 53 {0, 0x01, "Pointer"}, 54 {0, 0x02, "Mouse"}, 55 {0, 0x04, "Joystick"}, 56 {0, 0x05, "GamePad"}, 57 {0, 0x06, "Keyboard"}, 58 {0, 0x07, "Keypad"}, 59 {0, 0x08, "MultiAxis"}, 60 {0, 0x30, "X"}, 61 {0, 0x31, "Y"}, 62 {0, 0x32, "Z"}, 63 {0, 0x33, "Rx"}, 64 {0, 0x34, "Ry"}, 65 {0, 0x35, "Rz"}, 66 {0, 0x36, "Slider"}, 67 {0, 0x37, "Dial"}, 68 {0, 0x38, "Wheel"}, 69 {0, 0x39, "HatSwitch"}, 70 {0, 0x3a, "CountedBuffer"}, 71 {0, 0x3b, "ByteCount"}, 72 {0, 0x3c, "MotionWakeup"}, 73 {0, 0x3d, "Start"}, 74 {0, 0x3e, "Select"}, 75 {0, 0x40, "Vx"}, 76 {0, 0x41, "Vy"}, 77 {0, 0x42, "Vz"}, 78 {0, 0x43, "Vbrx"}, 79 {0, 0x44, "Vbry"}, 80 {0, 0x45, "Vbrz"}, 81 {0, 0x46, "Vno"}, 82 {0, 0x80, "SystemControl"}, 83 {0, 0x81, "SystemPowerDown"}, 84 {0, 0x82, "SystemSleep"}, 85 {0, 0x83, "SystemWakeUp"}, 86 {0, 0x84, "SystemContextMenu"}, 87 {0, 0x85, "SystemMainMenu"}, 88 {0, 0x86, "SystemAppMenu"}, 89 {0, 0x87, "SystemMenuHelp"}, 90 {0, 0x88, "SystemMenuExit"}, 91 {0, 0x89, "SystemMenuSelect"}, 92 {0, 0x8a, "SystemMenuRight"}, 93 {0, 0x8b, "SystemMenuLeft"}, 94 {0, 0x8c, "SystemMenuUp"}, 95 {0, 0x8d, "SystemMenuDown"}, 96 {0, 0x90, "D-PadUp"}, 97 {0, 0x91, "D-PadDown"}, 98 {0, 0x92, "D-PadRight"}, 99 {0, 0x93, "D-PadLeft"}, 100 { 2, 0, "Simulation" }, 101 {0, 0xb0, "Aileron"}, 102 {0, 0xb1, "AileronTrim"}, 103 {0, 0xb2, "Anti-Torque"}, 104 {0, 0xb3, "Autopilot"}, 105 {0, 0xb4, "Chaff"}, 106 {0, 0xb5, "Collective"}, 107 {0, 0xb6, "DiveBrake"}, 108 {0, 0xb7, "ElectronicCountermeasures"}, 109 {0, 0xb8, "Elevator"}, 110 {0, 0xb9, "ElevatorTrim"}, 111 {0, 0xba, "Rudder"}, 112 {0, 0xbb, "Throttle"}, 113 {0, 0xbc, "FlightCommunications"}, 114 {0, 0xbd, "FlareRelease"}, 115 {0, 0xbe, "LandingGear"}, 116 {0, 0xbf, "ToeBrake"}, 117 { 6, 0, "GenericDeviceControls" }, 118 {0, 0x20, "BatteryStrength" }, 119 {0, 0x21, "WirelessChannel" }, 120 {0, 0x22, "WirelessID" }, 121 {0, 0x23, "DiscoverWirelessControl" }, 122 {0, 0x24, "SecurityCodeCharacterEntered" }, 123 {0, 0x25, "SecurityCodeCharactedErased" }, 124 {0, 0x26, "SecurityCodeCleared" }, 125 { 7, 0, "Keyboard" }, 126 { 8, 0, "LED" }, 127 {0, 0x01, "NumLock"}, 128 {0, 0x02, "CapsLock"}, 129 {0, 0x03, "ScrollLock"}, 130 {0, 0x04, "Compose"}, 131 {0, 0x05, "Kana"}, 132 {0, 0x4b, "GenericIndicator"}, 133 { 9, 0, "Button" }, 134 { 10, 0, "Ordinal" }, 135 { 12, 0, "Consumer" }, 136 {0, 0x238, "HorizontalWheel"}, 137 { 13, 0, "Digitizers" }, 138 {0, 0x01, "Digitizer"}, 139 {0, 0x02, "Pen"}, 140 {0, 0x03, "LightPen"}, 141 {0, 0x04, "TouchScreen"}, 142 {0, 0x05, "TouchPad"}, 143 {0, 0x0e, "DeviceConfiguration"}, 144 {0, 0x20, "Stylus"}, 145 {0, 0x21, "Puck"}, 146 {0, 0x22, "Finger"}, 147 {0, 0x23, "DeviceSettings"}, 148 {0, 0x30, "TipPressure"}, 149 {0, 0x31, "BarrelPressure"}, 150 {0, 0x32, "InRange"}, 151 {0, 0x33, "Touch"}, 152 {0, 0x34, "UnTouch"}, 153 {0, 0x35, "Tap"}, 154 {0, 0x39, "TabletFunctionKey"}, 155 {0, 0x3a, "ProgramChangeKey"}, 156 {0, 0x3c, "Invert"}, 157 {0, 0x42, "TipSwitch"}, 158 {0, 0x43, "SecondaryTipSwitch"}, 159 {0, 0x44, "BarrelSwitch"}, 160 {0, 0x45, "Eraser"}, 161 {0, 0x46, "TabletPick"}, 162 {0, 0x47, "Confidence"}, 163 {0, 0x48, "Width"}, 164 {0, 0x49, "Height"}, 165 {0, 0x51, "ContactID"}, 166 {0, 0x52, "InputMode"}, 167 {0, 0x53, "DeviceIndex"}, 168 {0, 0x54, "ContactCount"}, 169 {0, 0x55, "ContactMaximumNumber"}, 170 {0, 0x59, "ButtonType"}, 171 {0, 0x5A, "SecondaryBarrelSwitch"}, 172 {0, 0x5B, "TransducerSerialNumber"}, 173 { 15, 0, "PhysicalInterfaceDevice" }, 174 {0, 0x00, "Undefined"}, 175 {0, 0x01, "Physical_Interface_Device"}, 176 {0, 0x20, "Normal"}, 177 {0, 0x21, "Set_Effect_Report"}, 178 {0, 0x22, "Effect_Block_Index"}, 179 {0, 0x23, "Parameter_Block_Offset"}, 180 {0, 0x24, "ROM_Flag"}, 181 {0, 0x25, "Effect_Type"}, 182 {0, 0x26, "ET_Constant_Force"}, 183 {0, 0x27, "ET_Ramp"}, 184 {0, 0x28, "ET_Custom_Force_Data"}, 185 {0, 0x30, "ET_Square"}, 186 {0, 0x31, "ET_Sine"}, 187 {0, 0x32, "ET_Triangle"}, 188 {0, 0x33, "ET_Sawtooth_Up"}, 189 {0, 0x34, "ET_Sawtooth_Down"}, 190 {0, 0x40, "ET_Spring"}, 191 {0, 0x41, "ET_Damper"}, 192 {0, 0x42, "ET_Inertia"}, 193 {0, 0x43, "ET_Friction"}, 194 {0, 0x50, "Duration"}, 195 {0, 0x51, "Sample_Period"}, 196 {0, 0x52, "Gain"}, 197 {0, 0x53, "Trigger_Button"}, 198 {0, 0x54, "Trigger_Repeat_Interval"}, 199 {0, 0x55, "Axes_Enable"}, 200 {0, 0x56, "Direction_Enable"}, 201 {0, 0x57, "Direction"}, 202 {0, 0x58, "Type_Specific_Block_Offset"}, 203 {0, 0x59, "Block_Type"}, 204 {0, 0x5A, "Set_Envelope_Report"}, 205 {0, 0x5B, "Attack_Level"}, 206 {0, 0x5C, "Attack_Time"}, 207 {0, 0x5D, "Fade_Level"}, 208 {0, 0x5E, "Fade_Time"}, 209 {0, 0x5F, "Set_Condition_Report"}, 210 {0, 0x60, "CP_Offset"}, 211 {0, 0x61, "Positive_Coefficient"}, 212 {0, 0x62, "Negative_Coefficient"}, 213 {0, 0x63, "Positive_Saturation"}, 214 {0, 0x64, "Negative_Saturation"}, 215 {0, 0x65, "Dead_Band"}, 216 {0, 0x66, "Download_Force_Sample"}, 217 {0, 0x67, "Isoch_Custom_Force_Enable"}, 218 {0, 0x68, "Custom_Force_Data_Report"}, 219 {0, 0x69, "Custom_Force_Data"}, 220 {0, 0x6A, "Custom_Force_Vendor_Defined_Data"}, 221 {0, 0x6B, "Set_Custom_Force_Report"}, 222 {0, 0x6C, "Custom_Force_Data_Offset"}, 223 {0, 0x6D, "Sample_Count"}, 224 {0, 0x6E, "Set_Periodic_Report"}, 225 {0, 0x6F, "Offset"}, 226 {0, 0x70, "Magnitude"}, 227 {0, 0x71, "Phase"}, 228 {0, 0x72, "Period"}, 229 {0, 0x73, "Set_Constant_Force_Report"}, 230 {0, 0x74, "Set_Ramp_Force_Report"}, 231 {0, 0x75, "Ramp_Start"}, 232 {0, 0x76, "Ramp_End"}, 233 {0, 0x77, "Effect_Operation_Report"}, 234 {0, 0x78, "Effect_Operation"}, 235 {0, 0x79, "Op_Effect_Start"}, 236 {0, 0x7A, "Op_Effect_Start_Solo"}, 237 {0, 0x7B, "Op_Effect_Stop"}, 238 {0, 0x7C, "Loop_Count"}, 239 {0, 0x7D, "Device_Gain_Report"}, 240 {0, 0x7E, "Device_Gain"}, 241 {0, 0x7F, "PID_Pool_Report"}, 242 {0, 0x80, "RAM_Pool_Size"}, 243 {0, 0x81, "ROM_Pool_Size"}, 244 {0, 0x82, "ROM_Effect_Block_Count"}, 245 {0, 0x83, "Simultaneous_Effects_Max"}, 246 {0, 0x84, "Pool_Alignment"}, 247 {0, 0x85, "PID_Pool_Move_Report"}, 248 {0, 0x86, "Move_Source"}, 249 {0, 0x87, "Move_Destination"}, 250 {0, 0x88, "Move_Length"}, 251 {0, 0x89, "PID_Block_Load_Report"}, 252 {0, 0x8B, "Block_Load_Status"}, 253 {0, 0x8C, "Block_Load_Success"}, 254 {0, 0x8D, "Block_Load_Full"}, 255 {0, 0x8E, "Block_Load_Error"}, 256 {0, 0x8F, "Block_Handle"}, 257 {0, 0x90, "PID_Block_Free_Report"}, 258 {0, 0x91, "Type_Specific_Block_Handle"}, 259 {0, 0x92, "PID_State_Report"}, 260 {0, 0x94, "Effect_Playing"}, 261 {0, 0x95, "PID_Device_Control_Report"}, 262 {0, 0x96, "PID_Device_Control"}, 263 {0, 0x97, "DC_Enable_Actuators"}, 264 {0, 0x98, "DC_Disable_Actuators"}, 265 {0, 0x99, "DC_Stop_All_Effects"}, 266 {0, 0x9A, "DC_Device_Reset"}, 267 {0, 0x9B, "DC_Device_Pause"}, 268 {0, 0x9C, "DC_Device_Continue"}, 269 {0, 0x9F, "Device_Paused"}, 270 {0, 0xA0, "Actuators_Enabled"}, 271 {0, 0xA4, "Safety_Switch"}, 272 {0, 0xA5, "Actuator_Override_Switch"}, 273 {0, 0xA6, "Actuator_Power"}, 274 {0, 0xA7, "Start_Delay"}, 275 {0, 0xA8, "Parameter_Block_Size"}, 276 {0, 0xA9, "Device_Managed_Pool"}, 277 {0, 0xAA, "Shared_Parameter_Blocks"}, 278 {0, 0xAB, "Create_New_Effect_Report"}, 279 {0, 0xAC, "RAM_Pool_Available"}, 280 { 0x20, 0, "Sensor" }, 281 { 0x20, 0x01, "Sensor" }, 282 { 0x20, 0x10, "Biometric" }, 283 { 0x20, 0x11, "BiometricHumanPresence" }, 284 { 0x20, 0x12, "BiometricHumanProximity" }, 285 { 0x20, 0x13, "BiometricHumanTouch" }, 286 { 0x20, 0x20, "Electrical" }, 287 { 0x20, 0x21, "ElectricalCapacitance" }, 288 { 0x20, 0x22, "ElectricalCurrent" }, 289 { 0x20, 0x23, "ElectricalPower" }, 290 { 0x20, 0x24, "ElectricalInductance" }, 291 { 0x20, 0x25, "ElectricalResistance" }, 292 { 0x20, 0x26, "ElectricalVoltage" }, 293 { 0x20, 0x27, "ElectricalPoteniometer" }, 294 { 0x20, 0x28, "ElectricalFrequency" }, 295 { 0x20, 0x29, "ElectricalPeriod" }, 296 { 0x20, 0x30, "Environmental" }, 297 { 0x20, 0x31, "EnvironmentalAtmosphericPressure" }, 298 { 0x20, 0x32, "EnvironmentalHumidity" }, 299 { 0x20, 0x33, "EnvironmentalTemperature" }, 300 { 0x20, 0x34, "EnvironmentalWindDirection" }, 301 { 0x20, 0x35, "EnvironmentalWindSpeed" }, 302 { 0x20, 0x40, "Light" }, 303 { 0x20, 0x41, "LightAmbientLight" }, 304 { 0x20, 0x42, "LightConsumerInfrared" }, 305 { 0x20, 0x50, "Location" }, 306 { 0x20, 0x51, "LocationBroadcast" }, 307 { 0x20, 0x52, "LocationDeadReckoning" }, 308 { 0x20, 0x53, "LocationGPS" }, 309 { 0x20, 0x54, "LocationLookup" }, 310 { 0x20, 0x55, "LocationOther" }, 311 { 0x20, 0x56, "LocationStatic" }, 312 { 0x20, 0x57, "LocationTriangulation" }, 313 { 0x20, 0x60, "Mechanical" }, 314 { 0x20, 0x61, "MechanicalBooleanSwitch" }, 315 { 0x20, 0x62, "MechanicalBooleanSwitchArray" }, 316 { 0x20, 0x63, "MechanicalMultivalueSwitch" }, 317 { 0x20, 0x64, "MechanicalForce" }, 318 { 0x20, 0x65, "MechanicalPressure" }, 319 { 0x20, 0x66, "MechanicalStrain" }, 320 { 0x20, 0x67, "MechanicalWeight" }, 321 { 0x20, 0x68, "MechanicalHapticVibrator" }, 322 { 0x20, 0x69, "MechanicalHallEffectSwitch" }, 323 { 0x20, 0x70, "Motion" }, 324 { 0x20, 0x71, "MotionAccelerometer1D" }, 325 { 0x20, 0x72, "MotionAccelerometer2D" }, 326 { 0x20, 0x73, "MotionAccelerometer3D" }, 327 { 0x20, 0x74, "MotionGyrometer1D" }, 328 { 0x20, 0x75, "MotionGyrometer2D" }, 329 { 0x20, 0x76, "MotionGyrometer3D" }, 330 { 0x20, 0x77, "MotionMotionDetector" }, 331 { 0x20, 0x78, "MotionSpeedometer" }, 332 { 0x20, 0x79, "MotionAccelerometer" }, 333 { 0x20, 0x7A, "MotionGyrometer" }, 334 { 0x20, 0x80, "Orientation" }, 335 { 0x20, 0x81, "OrientationCompass1D" }, 336 { 0x20, 0x82, "OrientationCompass2D" }, 337 { 0x20, 0x83, "OrientationCompass3D" }, 338 { 0x20, 0x84, "OrientationInclinometer1D" }, 339 { 0x20, 0x85, "OrientationInclinometer2D" }, 340 { 0x20, 0x86, "OrientationInclinometer3D" }, 341 { 0x20, 0x87, "OrientationDistance1D" }, 342 { 0x20, 0x88, "OrientationDistance2D" }, 343 { 0x20, 0x89, "OrientationDistance3D" }, 344 { 0x20, 0x8A, "OrientationDeviceOrientation" }, 345 { 0x20, 0x8B, "OrientationCompass" }, 346 { 0x20, 0x8C, "OrientationInclinometer" }, 347 { 0x20, 0x8D, "OrientationDistance" }, 348 { 0x20, 0x90, "Scanner" }, 349 { 0x20, 0x91, "ScannerBarcode" }, 350 { 0x20, 0x91, "ScannerRFID" }, 351 { 0x20, 0x91, "ScannerNFC" }, 352 { 0x20, 0xA0, "Time" }, 353 { 0x20, 0xA1, "TimeAlarmTimer" }, 354 { 0x20, 0xA2, "TimeRealTimeClock" }, 355 { 0x20, 0xE0, "Other" }, 356 { 0x20, 0xE1, "OtherCustom" }, 357 { 0x20, 0xE2, "OtherGeneric" }, 358 { 0x20, 0xE3, "OtherGenericEnumerator" }, 359 { 0x84, 0, "Power Device" }, 360 { 0x84, 0x02, "PresentStatus" }, 361 { 0x84, 0x03, "ChangeStatus" }, 362 { 0x84, 0x04, "UPS" }, 363 { 0x84, 0x05, "PowerSupply" }, 364 { 0x84, 0x10, "BatterySystem" }, 365 { 0x84, 0x11, "BatterySystemID" }, 366 { 0x84, 0x12, "Battery" }, 367 { 0x84, 0x13, "BatteryID" }, 368 { 0x84, 0x14, "Charger" }, 369 { 0x84, 0x15, "ChargerID" }, 370 { 0x84, 0x16, "PowerConverter" }, 371 { 0x84, 0x17, "PowerConverterID" }, 372 { 0x84, 0x18, "OutletSystem" }, 373 { 0x84, 0x19, "OutletSystemID" }, 374 { 0x84, 0x1a, "Input" }, 375 { 0x84, 0x1b, "InputID" }, 376 { 0x84, 0x1c, "Output" }, 377 { 0x84, 0x1d, "OutputID" }, 378 { 0x84, 0x1e, "Flow" }, 379 { 0x84, 0x1f, "FlowID" }, 380 { 0x84, 0x20, "Outlet" }, 381 { 0x84, 0x21, "OutletID" }, 382 { 0x84, 0x22, "Gang" }, 383 { 0x84, 0x24, "PowerSummary" }, 384 { 0x84, 0x25, "PowerSummaryID" }, 385 { 0x84, 0x30, "Voltage" }, 386 { 0x84, 0x31, "Current" }, 387 { 0x84, 0x32, "Frequency" }, 388 { 0x84, 0x33, "ApparentPower" }, 389 { 0x84, 0x35, "PercentLoad" }, 390 { 0x84, 0x40, "ConfigVoltage" }, 391 { 0x84, 0x41, "ConfigCurrent" }, 392 { 0x84, 0x43, "ConfigApparentPower" }, 393 { 0x84, 0x53, "LowVoltageTransfer" }, 394 { 0x84, 0x54, "HighVoltageTransfer" }, 395 { 0x84, 0x56, "DelayBeforeStartup" }, 396 { 0x84, 0x57, "DelayBeforeShutdown" }, 397 { 0x84, 0x58, "Test" }, 398 { 0x84, 0x5a, "AudibleAlarmControl" }, 399 { 0x84, 0x60, "Present" }, 400 { 0x84, 0x61, "Good" }, 401 { 0x84, 0x62, "InternalFailure" }, 402 { 0x84, 0x65, "Overload" }, 403 { 0x84, 0x66, "OverCharged" }, 404 { 0x84, 0x67, "OverTemperature" }, 405 { 0x84, 0x68, "ShutdownRequested" }, 406 { 0x84, 0x69, "ShutdownImminent" }, 407 { 0x84, 0x6b, "SwitchOn/Off" }, 408 { 0x84, 0x6c, "Switchable" }, 409 { 0x84, 0x6d, "Used" }, 410 { 0x84, 0x6e, "Boost" }, 411 { 0x84, 0x73, "CommunicationLost" }, 412 { 0x84, 0xfd, "iManufacturer" }, 413 { 0x84, 0xfe, "iProduct" }, 414 { 0x84, 0xff, "iSerialNumber" }, 415 { 0x85, 0, "Battery System" }, 416 { 0x85, 0x01, "SMBBatteryMode" }, 417 { 0x85, 0x02, "SMBBatteryStatus" }, 418 { 0x85, 0x03, "SMBAlarmWarning" }, 419 { 0x85, 0x04, "SMBChargerMode" }, 420 { 0x85, 0x05, "SMBChargerStatus" }, 421 { 0x85, 0x06, "SMBChargerSpecInfo" }, 422 { 0x85, 0x07, "SMBSelectorState" }, 423 { 0x85, 0x08, "SMBSelectorPresets" }, 424 { 0x85, 0x09, "SMBSelectorInfo" }, 425 { 0x85, 0x29, "RemainingCapacityLimit" }, 426 { 0x85, 0x2c, "CapacityMode" }, 427 { 0x85, 0x42, "BelowRemainingCapacityLimit" }, 428 { 0x85, 0x44, "Charging" }, 429 { 0x85, 0x45, "Discharging" }, 430 { 0x85, 0x4b, "NeedReplacement" }, 431 { 0x85, 0x66, "RemainingCapacity" }, 432 { 0x85, 0x68, "RunTimeToEmpty" }, 433 { 0x85, 0x6a, "AverageTimeToFull" }, 434 { 0x85, 0x83, "DesignCapacity" }, 435 { 0x85, 0x85, "ManufacturerDate" }, 436 { 0x85, 0x89, "iDeviceChemistry" }, 437 { 0x85, 0x8b, "Rechargeable" }, 438 { 0x85, 0x8f, "iOEMInformation" }, 439 { 0x85, 0x8d, "CapacityGranularity1" }, 440 { 0x85, 0xd0, "ACPresent" }, 441 /* pages 0xff00 to 0xffff are vendor-specific */ 442 { 0xffff, 0, "Vendor-specific-FF" }, 443 { 0, 0, NULL } 444 }; 445 446 /* Either output directly into simple seq_file, or (if f == NULL) 447 * allocate a separate buffer that will then be passed to the 'events' 448 * ringbuffer. 449 * 450 * This is because these functions can be called both for "one-shot" 451 * "rdesc" while resolving, or for blocking "events". 452 * 453 * This holds both for resolv_usage_page() and hid_resolv_usage(). 454 */ 455 static char *resolv_usage_page(unsigned page, struct seq_file *f) { 456 const struct hid_usage_entry *p; 457 char *buf = NULL; 458 459 if (!f) { 460 buf = kzalloc(HID_DEBUG_BUFSIZE, GFP_ATOMIC); 461 if (!buf) 462 return ERR_PTR(-ENOMEM); 463 } 464 465 for (p = hid_usage_table; p->description; p++) 466 if (p->page == page) { 467 if (!f) { 468 snprintf(buf, HID_DEBUG_BUFSIZE, "%s", 469 p->description); 470 return buf; 471 } 472 else { 473 seq_printf(f, "%s", p->description); 474 return NULL; 475 } 476 } 477 if (!f) 478 snprintf(buf, HID_DEBUG_BUFSIZE, "%04x", page); 479 else 480 seq_printf(f, "%04x", page); 481 return buf; 482 } 483 484 char *hid_resolv_usage(unsigned usage, struct seq_file *f) { 485 const struct hid_usage_entry *p; 486 char *buf = NULL; 487 int len = 0; 488 489 buf = resolv_usage_page(usage >> 16, f); 490 if (IS_ERR(buf)) { 491 pr_err("error allocating HID debug buffer\n"); 492 return NULL; 493 } 494 495 496 if (!f) { 497 len = strlen(buf); 498 snprintf(buf+len, max(0, HID_DEBUG_BUFSIZE - len), "."); 499 len++; 500 } 501 else { 502 seq_printf(f, "."); 503 } 504 for (p = hid_usage_table; p->description; p++) 505 if (p->page == (usage >> 16)) { 506 for(++p; p->description && p->usage != 0; p++) 507 if (p->usage == (usage & 0xffff)) { 508 if (!f) 509 snprintf(buf + len, 510 max(0,HID_DEBUG_BUFSIZE - len - 1), 511 "%s", p->description); 512 else 513 seq_printf(f, 514 "%s", 515 p->description); 516 return buf; 517 } 518 break; 519 } 520 if (!f) 521 snprintf(buf + len, max(0, HID_DEBUG_BUFSIZE - len - 1), 522 "%04x", usage & 0xffff); 523 else 524 seq_printf(f, "%04x", usage & 0xffff); 525 return buf; 526 } 527 EXPORT_SYMBOL_GPL(hid_resolv_usage); 528 529 static void tab(int n, struct seq_file *f) { 530 seq_printf(f, "%*s", n, ""); 531 } 532 533 void hid_dump_field(struct hid_field *field, int n, struct seq_file *f) { 534 int j; 535 536 if (field->physical) { 537 tab(n, f); 538 seq_printf(f, "Physical("); 539 hid_resolv_usage(field->physical, f); seq_printf(f, ")\n"); 540 } 541 if (field->logical) { 542 tab(n, f); 543 seq_printf(f, "Logical("); 544 hid_resolv_usage(field->logical, f); seq_printf(f, ")\n"); 545 } 546 if (field->application) { 547 tab(n, f); 548 seq_printf(f, "Application("); 549 hid_resolv_usage(field->application, f); seq_printf(f, ")\n"); 550 } 551 tab(n, f); seq_printf(f, "Usage(%d)\n", field->maxusage); 552 for (j = 0; j < field->maxusage; j++) { 553 tab(n+2, f); hid_resolv_usage(field->usage[j].hid, f); seq_printf(f, "\n"); 554 } 555 if (field->logical_minimum != field->logical_maximum) { 556 tab(n, f); seq_printf(f, "Logical Minimum(%d)\n", field->logical_minimum); 557 tab(n, f); seq_printf(f, "Logical Maximum(%d)\n", field->logical_maximum); 558 } 559 if (field->physical_minimum != field->physical_maximum) { 560 tab(n, f); seq_printf(f, "Physical Minimum(%d)\n", field->physical_minimum); 561 tab(n, f); seq_printf(f, "Physical Maximum(%d)\n", field->physical_maximum); 562 } 563 if (field->unit_exponent) { 564 tab(n, f); seq_printf(f, "Unit Exponent(%d)\n", field->unit_exponent); 565 } 566 if (field->unit) { 567 static const char *systems[5] = { "None", "SI Linear", "SI Rotation", "English Linear", "English Rotation" }; 568 static const char *units[5][8] = { 569 { "None", "None", "None", "None", "None", "None", "None", "None" }, 570 { "None", "Centimeter", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" }, 571 { "None", "Radians", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" }, 572 { "None", "Inch", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" }, 573 { "None", "Degrees", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" } 574 }; 575 576 int i; 577 int sys; 578 __u32 data = field->unit; 579 580 /* First nibble tells us which system we're in. */ 581 sys = data & 0xf; 582 data >>= 4; 583 584 if(sys > 4) { 585 tab(n, f); seq_printf(f, "Unit(Invalid)\n"); 586 } 587 else { 588 int earlier_unit = 0; 589 590 tab(n, f); seq_printf(f, "Unit(%s : ", systems[sys]); 591 592 for (i=1 ; i<sizeof(__u32)*2 ; i++) { 593 char nibble = data & 0xf; 594 data >>= 4; 595 if (nibble != 0) { 596 if(earlier_unit++ > 0) 597 seq_printf(f, "*"); 598 seq_printf(f, "%s", units[sys][i]); 599 if(nibble != 1) { 600 /* This is a _signed_ nibble(!) */ 601 602 int val = nibble & 0x7; 603 if(nibble & 0x08) 604 val = -((0x7 & ~val) +1); 605 seq_printf(f, "^%d", val); 606 } 607 } 608 } 609 seq_printf(f, ")\n"); 610 } 611 } 612 tab(n, f); seq_printf(f, "Report Size(%u)\n", field->report_size); 613 tab(n, f); seq_printf(f, "Report Count(%u)\n", field->report_count); 614 tab(n, f); seq_printf(f, "Report Offset(%u)\n", field->report_offset); 615 616 tab(n, f); seq_printf(f, "Flags( "); 617 j = field->flags; 618 seq_printf(f, "%s", HID_MAIN_ITEM_CONSTANT & j ? "Constant " : ""); 619 seq_printf(f, "%s", HID_MAIN_ITEM_VARIABLE & j ? "Variable " : "Array "); 620 seq_printf(f, "%s", HID_MAIN_ITEM_RELATIVE & j ? "Relative " : "Absolute "); 621 seq_printf(f, "%s", HID_MAIN_ITEM_WRAP & j ? "Wrap " : ""); 622 seq_printf(f, "%s", HID_MAIN_ITEM_NONLINEAR & j ? "NonLinear " : ""); 623 seq_printf(f, "%s", HID_MAIN_ITEM_NO_PREFERRED & j ? "NoPreferredState " : ""); 624 seq_printf(f, "%s", HID_MAIN_ITEM_NULL_STATE & j ? "NullState " : ""); 625 seq_printf(f, "%s", HID_MAIN_ITEM_VOLATILE & j ? "Volatile " : ""); 626 seq_printf(f, "%s", HID_MAIN_ITEM_BUFFERED_BYTE & j ? "BufferedByte " : ""); 627 seq_printf(f, ")\n"); 628 } 629 EXPORT_SYMBOL_GPL(hid_dump_field); 630 631 void hid_dump_device(struct hid_device *device, struct seq_file *f) 632 { 633 struct hid_report_enum *report_enum; 634 struct hid_report *report; 635 struct list_head *list; 636 unsigned i,k; 637 static const char *table[] = {"INPUT", "OUTPUT", "FEATURE"}; 638 639 for (i = 0; i < HID_REPORT_TYPES; i++) { 640 report_enum = device->report_enum + i; 641 list = report_enum->report_list.next; 642 while (list != &report_enum->report_list) { 643 report = (struct hid_report *) list; 644 tab(2, f); 645 seq_printf(f, "%s", table[i]); 646 if (report->id) 647 seq_printf(f, "(%d)", report->id); 648 seq_printf(f, "[%s]", table[report->type]); 649 seq_printf(f, "\n"); 650 for (k = 0; k < report->maxfield; k++) { 651 tab(4, f); 652 seq_printf(f, "Field(%d)\n", k); 653 hid_dump_field(report->field[k], 6, f); 654 } 655 list = list->next; 656 } 657 } 658 } 659 EXPORT_SYMBOL_GPL(hid_dump_device); 660 661 /* enqueue string to 'events' ring buffer */ 662 void hid_debug_event(struct hid_device *hdev, char *buf) 663 { 664 unsigned i; 665 struct hid_debug_list *list; 666 unsigned long flags; 667 668 spin_lock_irqsave(&hdev->debug_list_lock, flags); 669 list_for_each_entry(list, &hdev->debug_list, node) { 670 for (i = 0; buf[i]; i++) 671 list->hid_debug_buf[(list->tail + i) % HID_DEBUG_BUFSIZE] = 672 buf[i]; 673 list->tail = (list->tail + i) % HID_DEBUG_BUFSIZE; 674 } 675 spin_unlock_irqrestore(&hdev->debug_list_lock, flags); 676 677 wake_up_interruptible(&hdev->debug_wait); 678 } 679 EXPORT_SYMBOL_GPL(hid_debug_event); 680 681 void hid_dump_report(struct hid_device *hid, int type, u8 *data, 682 int size) 683 { 684 struct hid_report_enum *report_enum; 685 char *buf; 686 unsigned int i; 687 688 buf = kmalloc(HID_DEBUG_BUFSIZE, GFP_ATOMIC); 689 690 if (!buf) 691 return; 692 693 report_enum = hid->report_enum + type; 694 695 /* dump the report */ 696 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 697 "\nreport (size %u) (%snumbered) = ", size, 698 report_enum->numbered ? "" : "un"); 699 hid_debug_event(hid, buf); 700 701 for (i = 0; i < size; i++) { 702 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 703 " %02x", data[i]); 704 hid_debug_event(hid, buf); 705 } 706 hid_debug_event(hid, "\n"); 707 kfree(buf); 708 } 709 EXPORT_SYMBOL_GPL(hid_dump_report); 710 711 void hid_dump_input(struct hid_device *hdev, struct hid_usage *usage, __s32 value) 712 { 713 char *buf; 714 int len; 715 716 buf = hid_resolv_usage(usage->hid, NULL); 717 if (!buf) 718 return; 719 len = strlen(buf); 720 snprintf(buf + len, HID_DEBUG_BUFSIZE - len - 1, " = %d\n", value); 721 722 hid_debug_event(hdev, buf); 723 724 kfree(buf); 725 wake_up_interruptible(&hdev->debug_wait); 726 727 } 728 EXPORT_SYMBOL_GPL(hid_dump_input); 729 730 static const char *events[EV_MAX + 1] = { 731 [EV_SYN] = "Sync", [EV_KEY] = "Key", 732 [EV_REL] = "Relative", [EV_ABS] = "Absolute", 733 [EV_MSC] = "Misc", [EV_LED] = "LED", 734 [EV_SND] = "Sound", [EV_REP] = "Repeat", 735 [EV_FF] = "ForceFeedback", [EV_PWR] = "Power", 736 [EV_FF_STATUS] = "ForceFeedbackStatus", 737 }; 738 739 static const char *syncs[3] = { 740 [SYN_REPORT] = "Report", [SYN_CONFIG] = "Config", 741 [SYN_MT_REPORT] = "MT Report", 742 }; 743 744 static const char *keys[KEY_MAX + 1] = { 745 [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc", 746 [KEY_1] = "1", [KEY_2] = "2", 747 [KEY_3] = "3", [KEY_4] = "4", 748 [KEY_5] = "5", [KEY_6] = "6", 749 [KEY_7] = "7", [KEY_8] = "8", 750 [KEY_9] = "9", [KEY_0] = "0", 751 [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal", 752 [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab", 753 [KEY_Q] = "Q", [KEY_W] = "W", 754 [KEY_E] = "E", [KEY_R] = "R", 755 [KEY_T] = "T", [KEY_Y] = "Y", 756 [KEY_U] = "U", [KEY_I] = "I", 757 [KEY_O] = "O", [KEY_P] = "P", 758 [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace", 759 [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl", 760 [KEY_A] = "A", [KEY_S] = "S", 761 [KEY_D] = "D", [KEY_F] = "F", 762 [KEY_G] = "G", [KEY_H] = "H", 763 [KEY_J] = "J", [KEY_K] = "K", 764 [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon", 765 [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave", 766 [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash", 767 [KEY_Z] = "Z", [KEY_X] = "X", 768 [KEY_C] = "C", [KEY_V] = "V", 769 [KEY_B] = "B", [KEY_N] = "N", 770 [KEY_M] = "M", [KEY_COMMA] = "Comma", 771 [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash", 772 [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk", 773 [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space", 774 [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1", 775 [KEY_F2] = "F2", [KEY_F3] = "F3", 776 [KEY_F4] = "F4", [KEY_F5] = "F5", 777 [KEY_F6] = "F6", [KEY_F7] = "F7", 778 [KEY_F8] = "F8", [KEY_F9] = "F9", 779 [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock", 780 [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7", 781 [KEY_KP8] = "KP8", [KEY_KP9] = "KP9", 782 [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4", 783 [KEY_KP5] = "KP5", [KEY_KP6] = "KP6", 784 [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1", 785 [KEY_KP2] = "KP2", [KEY_KP3] = "KP3", 786 [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot", 787 [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd", 788 [KEY_F11] = "F11", [KEY_F12] = "F12", 789 [KEY_RO] = "RO", [KEY_KATAKANA] = "Katakana", 790 [KEY_HIRAGANA] = "HIRAGANA", [KEY_HENKAN] = "Henkan", 791 [KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan", 792 [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter", 793 [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash", 794 [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt", 795 [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home", 796 [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp", 797 [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right", 798 [KEY_END] = "End", [KEY_DOWN] = "Down", 799 [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert", 800 [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro", 801 [KEY_MUTE] = "Mute", [KEY_VOLUMEDOWN] = "VolumeDown", 802 [KEY_VOLUMEUP] = "VolumeUp", [KEY_POWER] = "Power", 803 [KEY_KPEQUAL] = "KPEqual", [KEY_KPPLUSMINUS] = "KPPlusMinus", 804 [KEY_PAUSE] = "Pause", [KEY_KPCOMMA] = "KPComma", 805 [KEY_HANGUEL] = "Hangeul", [KEY_HANJA] = "Hanja", 806 [KEY_YEN] = "Yen", [KEY_LEFTMETA] = "LeftMeta", 807 [KEY_RIGHTMETA] = "RightMeta", [KEY_COMPOSE] = "Compose", 808 [KEY_STOP] = "Stop", [KEY_AGAIN] = "Again", 809 [KEY_PROPS] = "Props", [KEY_UNDO] = "Undo", 810 [KEY_FRONT] = "Front", [KEY_COPY] = "Copy", 811 [KEY_OPEN] = "Open", [KEY_PASTE] = "Paste", 812 [KEY_FIND] = "Find", [KEY_CUT] = "Cut", 813 [KEY_HELP] = "Help", [KEY_MENU] = "Menu", 814 [KEY_CALC] = "Calc", [KEY_SETUP] = "Setup", 815 [KEY_SLEEP] = "Sleep", [KEY_WAKEUP] = "WakeUp", 816 [KEY_FILE] = "File", [KEY_SENDFILE] = "SendFile", 817 [KEY_DELETEFILE] = "DeleteFile", [KEY_XFER] = "X-fer", 818 [KEY_PROG1] = "Prog1", [KEY_PROG2] = "Prog2", 819 [KEY_WWW] = "WWW", [KEY_MSDOS] = "MSDOS", 820 [KEY_COFFEE] = "Coffee", [KEY_ROTATE_DISPLAY] = "RotateDisplay", 821 [KEY_CYCLEWINDOWS] = "CycleWindows", [KEY_MAIL] = "Mail", 822 [KEY_BOOKMARKS] = "Bookmarks", [KEY_COMPUTER] = "Computer", 823 [KEY_BACK] = "Back", [KEY_FORWARD] = "Forward", 824 [KEY_CLOSECD] = "CloseCD", [KEY_EJECTCD] = "EjectCD", 825 [KEY_EJECTCLOSECD] = "EjectCloseCD", [KEY_NEXTSONG] = "NextSong", 826 [KEY_PLAYPAUSE] = "PlayPause", [KEY_PREVIOUSSONG] = "PreviousSong", 827 [KEY_STOPCD] = "StopCD", [KEY_RECORD] = "Record", 828 [KEY_REWIND] = "Rewind", [KEY_PHONE] = "Phone", 829 [KEY_ISO] = "ISOKey", [KEY_CONFIG] = "Config", 830 [KEY_HOMEPAGE] = "HomePage", [KEY_REFRESH] = "Refresh", 831 [KEY_EXIT] = "Exit", [KEY_MOVE] = "Move", 832 [KEY_EDIT] = "Edit", [KEY_SCROLLUP] = "ScrollUp", 833 [KEY_SCROLLDOWN] = "ScrollDown", [KEY_KPLEFTPAREN] = "KPLeftParenthesis", 834 [KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_NEW] = "New", 835 [KEY_REDO] = "Redo", [KEY_F13] = "F13", 836 [KEY_F14] = "F14", [KEY_F15] = "F15", 837 [KEY_F16] = "F16", [KEY_F17] = "F17", 838 [KEY_F18] = "F18", [KEY_F19] = "F19", 839 [KEY_F20] = "F20", [KEY_F21] = "F21", 840 [KEY_F22] = "F22", [KEY_F23] = "F23", 841 [KEY_F24] = "F24", [KEY_PLAYCD] = "PlayCD", 842 [KEY_PAUSECD] = "PauseCD", [KEY_PROG3] = "Prog3", 843 [KEY_PROG4] = "Prog4", [KEY_SUSPEND] = "Suspend", 844 [KEY_CLOSE] = "Close", [KEY_PLAY] = "Play", 845 [KEY_FASTFORWARD] = "FastForward", [KEY_BASSBOOST] = "BassBoost", 846 [KEY_PRINT] = "Print", [KEY_HP] = "HP", 847 [KEY_CAMERA] = "Camera", [KEY_SOUND] = "Sound", 848 [KEY_QUESTION] = "Question", [KEY_EMAIL] = "Email", 849 [KEY_CHAT] = "Chat", [KEY_SEARCH] = "Search", 850 [KEY_CONNECT] = "Connect", [KEY_FINANCE] = "Finance", 851 [KEY_SPORT] = "Sport", [KEY_SHOP] = "Shop", 852 [KEY_ALTERASE] = "AlternateErase", [KEY_CANCEL] = "Cancel", 853 [KEY_BRIGHTNESSDOWN] = "BrightnessDown", [KEY_BRIGHTNESSUP] = "BrightnessUp", 854 [KEY_MEDIA] = "Media", [KEY_UNKNOWN] = "Unknown", 855 [BTN_DPAD_UP] = "BtnDPadUp", [BTN_DPAD_DOWN] = "BtnDPadDown", 856 [BTN_DPAD_LEFT] = "BtnDPadLeft", [BTN_DPAD_RIGHT] = "BtnDPadRight", 857 [BTN_0] = "Btn0", [BTN_1] = "Btn1", 858 [BTN_2] = "Btn2", [BTN_3] = "Btn3", 859 [BTN_4] = "Btn4", [BTN_5] = "Btn5", 860 [BTN_6] = "Btn6", [BTN_7] = "Btn7", 861 [BTN_8] = "Btn8", [BTN_9] = "Btn9", 862 [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn", 863 [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn", 864 [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn", 865 [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn", 866 [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn", 867 [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn", 868 [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn", 869 [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2", 870 [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4", 871 [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6", 872 [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA", 873 [BTN_B] = "BtnB", [BTN_C] = "BtnC", 874 [BTN_X] = "BtnX", [BTN_Y] = "BtnY", 875 [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL", 876 [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2", 877 [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect", 878 [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode", 879 [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR", 880 [BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber", 881 [BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil", 882 [BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger", 883 [BTN_TOOL_MOUSE] = "ToolMouse", [BTN_TOOL_LENS] = "ToolLens", 884 [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus", 885 [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "ToolDoubleTap", 886 [BTN_TOOL_TRIPLETAP] = "ToolTripleTap", [BTN_TOOL_QUADTAP] = "ToolQuadrupleTap", 887 [BTN_GEAR_DOWN] = "WheelBtn", 888 [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok", 889 [KEY_SELECT] = "Select", [KEY_GOTO] = "Goto", 890 [KEY_CLEAR] = "Clear", [KEY_POWER2] = "Power2", 891 [KEY_OPTION] = "Option", [KEY_INFO] = "Info", 892 [KEY_TIME] = "Time", [KEY_VENDOR] = "Vendor", 893 [KEY_ARCHIVE] = "Archive", [KEY_PROGRAM] = "Program", 894 [KEY_CHANNEL] = "Channel", [KEY_FAVORITES] = "Favorites", 895 [KEY_EPG] = "EPG", [KEY_PVR] = "PVR", 896 [KEY_MHP] = "MHP", [KEY_LANGUAGE] = "Language", 897 [KEY_TITLE] = "Title", [KEY_SUBTITLE] = "Subtitle", 898 [KEY_ANGLE] = "Angle", [KEY_ZOOM] = "Zoom", 899 [KEY_MODE] = "Mode", [KEY_KEYBOARD] = "Keyboard", 900 [KEY_SCREEN] = "Screen", [KEY_PC] = "PC", 901 [KEY_TV] = "TV", [KEY_TV2] = "TV2", 902 [KEY_VCR] = "VCR", [KEY_VCR2] = "VCR2", 903 [KEY_SAT] = "Sat", [KEY_SAT2] = "Sat2", 904 [KEY_CD] = "CD", [KEY_TAPE] = "Tape", 905 [KEY_RADIO] = "Radio", [KEY_TUNER] = "Tuner", 906 [KEY_PLAYER] = "Player", [KEY_TEXT] = "Text", 907 [KEY_DVD] = "DVD", [KEY_AUX] = "Aux", 908 [KEY_MP3] = "MP3", [KEY_AUDIO] = "Audio", 909 [KEY_VIDEO] = "Video", [KEY_DIRECTORY] = "Directory", 910 [KEY_LIST] = "List", [KEY_MEMO] = "Memo", 911 [KEY_CALENDAR] = "Calendar", [KEY_RED] = "Red", 912 [KEY_GREEN] = "Green", [KEY_YELLOW] = "Yellow", 913 [KEY_BLUE] = "Blue", [KEY_CHANNELUP] = "ChannelUp", 914 [KEY_CHANNELDOWN] = "ChannelDown", [KEY_FIRST] = "First", 915 [KEY_LAST] = "Last", [KEY_AB] = "AB", 916 [KEY_NEXT] = "Next", [KEY_RESTART] = "Restart", 917 [KEY_SLOW] = "Slow", [KEY_SHUFFLE] = "Shuffle", 918 [KEY_BREAK] = "Break", [KEY_PREVIOUS] = "Previous", 919 [KEY_DIGITS] = "Digits", [KEY_TEEN] = "TEEN", 920 [KEY_TWEN] = "TWEN", [KEY_DEL_EOL] = "DeleteEOL", 921 [KEY_DEL_EOS] = "DeleteEOS", [KEY_INS_LINE] = "InsertLine", 922 [KEY_DEL_LINE] = "DeleteLine", 923 [KEY_SEND] = "Send", [KEY_REPLY] = "Reply", 924 [KEY_FORWARDMAIL] = "ForwardMail", [KEY_SAVE] = "Save", 925 [KEY_DOCUMENTS] = "Documents", [KEY_SPELLCHECK] = "SpellCheck", 926 [KEY_LOGOFF] = "Logoff", 927 [KEY_FN] = "Fn", [KEY_FN_ESC] = "Fn+ESC", 928 [KEY_FN_1] = "Fn+1", [KEY_FN_2] = "Fn+2", 929 [KEY_FN_B] = "Fn+B", [KEY_FN_D] = "Fn+D", 930 [KEY_FN_E] = "Fn+E", [KEY_FN_F] = "Fn+F", 931 [KEY_FN_S] = "Fn+S", 932 [KEY_FN_F1] = "Fn+F1", [KEY_FN_F2] = "Fn+F2", 933 [KEY_FN_F3] = "Fn+F3", [KEY_FN_F4] = "Fn+F4", 934 [KEY_FN_F5] = "Fn+F5", [KEY_FN_F6] = "Fn+F6", 935 [KEY_FN_F7] = "Fn+F7", [KEY_FN_F8] = "Fn+F8", 936 [KEY_FN_F9] = "Fn+F9", [KEY_FN_F10] = "Fn+F10", 937 [KEY_FN_F11] = "Fn+F11", [KEY_FN_F12] = "Fn+F12", 938 [KEY_KBDILLUMTOGGLE] = "KbdIlluminationToggle", 939 [KEY_KBDILLUMDOWN] = "KbdIlluminationDown", 940 [KEY_KBDILLUMUP] = "KbdIlluminationUp", 941 [KEY_SWITCHVIDEOMODE] = "SwitchVideoMode", 942 [KEY_BUTTONCONFIG] = "ButtonConfig", 943 [KEY_TASKMANAGER] = "TaskManager", 944 [KEY_JOURNAL] = "Journal", 945 [KEY_CONTROLPANEL] = "ControlPanel", 946 [KEY_APPSELECT] = "AppSelect", 947 [KEY_SCREENSAVER] = "ScreenSaver", 948 [KEY_VOICECOMMAND] = "VoiceCommand", 949 [KEY_BRIGHTNESS_MIN] = "BrightnessMin", 950 [KEY_BRIGHTNESS_MAX] = "BrightnessMax", 951 [KEY_BRIGHTNESS_AUTO] = "BrightnessAuto", 952 [KEY_KBDINPUTASSIST_PREV] = "KbdInputAssistPrev", 953 [KEY_KBDINPUTASSIST_NEXT] = "KbdInputAssistNext", 954 [KEY_KBDINPUTASSIST_PREVGROUP] = "KbdInputAssistPrevGroup", 955 [KEY_KBDINPUTASSIST_NEXTGROUP] = "KbdInputAssistNextGroup", 956 [KEY_KBDINPUTASSIST_ACCEPT] = "KbdInputAssistAccept", 957 [KEY_KBDINPUTASSIST_CANCEL] = "KbdInputAssistCancel", 958 }; 959 960 static const char *relatives[REL_MAX + 1] = { 961 [REL_X] = "X", [REL_Y] = "Y", 962 [REL_Z] = "Z", [REL_RX] = "Rx", 963 [REL_RY] = "Ry", [REL_RZ] = "Rz", 964 [REL_HWHEEL] = "HWheel", [REL_DIAL] = "Dial", 965 [REL_WHEEL] = "Wheel", [REL_MISC] = "Misc", 966 }; 967 968 static const char *absolutes[ABS_CNT] = { 969 [ABS_X] = "X", [ABS_Y] = "Y", 970 [ABS_Z] = "Z", [ABS_RX] = "Rx", 971 [ABS_RY] = "Ry", [ABS_RZ] = "Rz", 972 [ABS_THROTTLE] = "Throttle", [ABS_RUDDER] = "Rudder", 973 [ABS_WHEEL] = "Wheel", [ABS_GAS] = "Gas", 974 [ABS_BRAKE] = "Brake", [ABS_HAT0X] = "Hat0X", 975 [ABS_HAT0Y] = "Hat0Y", [ABS_HAT1X] = "Hat1X", 976 [ABS_HAT1Y] = "Hat1Y", [ABS_HAT2X] = "Hat2X", 977 [ABS_HAT2Y] = "Hat2Y", [ABS_HAT3X] = "Hat3X", 978 [ABS_HAT3Y] = "Hat 3Y", [ABS_PRESSURE] = "Pressure", 979 [ABS_DISTANCE] = "Distance", [ABS_TILT_X] = "XTilt", 980 [ABS_TILT_Y] = "YTilt", [ABS_TOOL_WIDTH] = "ToolWidth", 981 [ABS_VOLUME] = "Volume", [ABS_MISC] = "Misc", 982 [ABS_MT_TOUCH_MAJOR] = "MTMajor", 983 [ABS_MT_TOUCH_MINOR] = "MTMinor", 984 [ABS_MT_WIDTH_MAJOR] = "MTMajorW", 985 [ABS_MT_WIDTH_MINOR] = "MTMinorW", 986 [ABS_MT_ORIENTATION] = "MTOrientation", 987 [ABS_MT_POSITION_X] = "MTPositionX", 988 [ABS_MT_POSITION_Y] = "MTPositionY", 989 [ABS_MT_TOOL_TYPE] = "MTToolType", 990 [ABS_MT_BLOB_ID] = "MTBlobID", 991 }; 992 993 static const char *misc[MSC_MAX + 1] = { 994 [MSC_SERIAL] = "Serial", [MSC_PULSELED] = "Pulseled", 995 [MSC_GESTURE] = "Gesture", [MSC_RAW] = "RawData" 996 }; 997 998 static const char *leds[LED_MAX + 1] = { 999 [LED_NUML] = "NumLock", [LED_CAPSL] = "CapsLock", 1000 [LED_SCROLLL] = "ScrollLock", [LED_COMPOSE] = "Compose", 1001 [LED_KANA] = "Kana", [LED_SLEEP] = "Sleep", 1002 [LED_SUSPEND] = "Suspend", [LED_MUTE] = "Mute", 1003 [LED_MISC] = "Misc", 1004 }; 1005 1006 static const char *repeats[REP_MAX + 1] = { 1007 [REP_DELAY] = "Delay", [REP_PERIOD] = "Period" 1008 }; 1009 1010 static const char *sounds[SND_MAX + 1] = { 1011 [SND_CLICK] = "Click", [SND_BELL] = "Bell", 1012 [SND_TONE] = "Tone" 1013 }; 1014 1015 static const char **names[EV_MAX + 1] = { 1016 [EV_SYN] = syncs, [EV_KEY] = keys, 1017 [EV_REL] = relatives, [EV_ABS] = absolutes, 1018 [EV_MSC] = misc, [EV_LED] = leds, 1019 [EV_SND] = sounds, [EV_REP] = repeats, 1020 }; 1021 1022 static void hid_resolv_event(__u8 type, __u16 code, struct seq_file *f) 1023 { 1024 seq_printf(f, "%s.%s", events[type] ? events[type] : "?", 1025 names[type] ? (names[type][code] ? names[type][code] : "?") : "?"); 1026 } 1027 1028 static void hid_dump_input_mapping(struct hid_device *hid, struct seq_file *f) 1029 { 1030 int i, j, k; 1031 struct hid_report *report; 1032 struct hid_usage *usage; 1033 1034 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1035 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1036 for (i = 0; i < report->maxfield; i++) { 1037 for ( j = 0; j < report->field[i]->maxusage; j++) { 1038 usage = report->field[i]->usage + j; 1039 hid_resolv_usage(usage->hid, f); 1040 seq_printf(f, " ---> "); 1041 hid_resolv_event(usage->type, usage->code, f); 1042 seq_printf(f, "\n"); 1043 } 1044 } 1045 } 1046 } 1047 1048 } 1049 1050 static int hid_debug_rdesc_show(struct seq_file *f, void *p) 1051 { 1052 struct hid_device *hdev = f->private; 1053 const __u8 *rdesc = hdev->rdesc; 1054 unsigned rsize = hdev->rsize; 1055 int i; 1056 1057 if (!rdesc) { 1058 rdesc = hdev->dev_rdesc; 1059 rsize = hdev->dev_rsize; 1060 } 1061 1062 /* dump HID report descriptor */ 1063 for (i = 0; i < rsize; i++) 1064 seq_printf(f, "%02x ", rdesc[i]); 1065 seq_printf(f, "\n\n"); 1066 1067 /* dump parsed data and input mappings */ 1068 hid_dump_device(hdev, f); 1069 seq_printf(f, "\n"); 1070 hid_dump_input_mapping(hdev, f); 1071 1072 return 0; 1073 } 1074 1075 static int hid_debug_events_open(struct inode *inode, struct file *file) 1076 { 1077 int err = 0; 1078 struct hid_debug_list *list; 1079 unsigned long flags; 1080 1081 if (!(list = kzalloc(sizeof(struct hid_debug_list), GFP_KERNEL))) { 1082 err = -ENOMEM; 1083 goto out; 1084 } 1085 1086 if (!(list->hid_debug_buf = kzalloc(HID_DEBUG_BUFSIZE, GFP_KERNEL))) { 1087 err = -ENOMEM; 1088 kfree(list); 1089 goto out; 1090 } 1091 list->hdev = (struct hid_device *) inode->i_private; 1092 file->private_data = list; 1093 mutex_init(&list->read_mutex); 1094 1095 spin_lock_irqsave(&list->hdev->debug_list_lock, flags); 1096 list_add_tail(&list->node, &list->hdev->debug_list); 1097 spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags); 1098 1099 out: 1100 return err; 1101 } 1102 1103 static ssize_t hid_debug_events_read(struct file *file, char __user *buffer, 1104 size_t count, loff_t *ppos) 1105 { 1106 struct hid_debug_list *list = file->private_data; 1107 int ret = 0, len; 1108 DECLARE_WAITQUEUE(wait, current); 1109 1110 mutex_lock(&list->read_mutex); 1111 while (ret == 0) { 1112 if (list->head == list->tail) { 1113 add_wait_queue(&list->hdev->debug_wait, &wait); 1114 set_current_state(TASK_INTERRUPTIBLE); 1115 1116 while (list->head == list->tail) { 1117 if (file->f_flags & O_NONBLOCK) { 1118 ret = -EAGAIN; 1119 break; 1120 } 1121 if (signal_pending(current)) { 1122 ret = -ERESTARTSYS; 1123 break; 1124 } 1125 1126 if (!list->hdev || !list->hdev->debug) { 1127 ret = -EIO; 1128 set_current_state(TASK_RUNNING); 1129 goto out; 1130 } 1131 1132 /* allow O_NONBLOCK from other threads */ 1133 mutex_unlock(&list->read_mutex); 1134 schedule(); 1135 mutex_lock(&list->read_mutex); 1136 set_current_state(TASK_INTERRUPTIBLE); 1137 } 1138 1139 set_current_state(TASK_RUNNING); 1140 remove_wait_queue(&list->hdev->debug_wait, &wait); 1141 } 1142 1143 if (ret) 1144 goto out; 1145 1146 /* pass the ringbuffer contents to userspace */ 1147 copy_rest: 1148 if (list->tail == list->head) 1149 goto out; 1150 if (list->tail > list->head) { 1151 len = list->tail - list->head; 1152 if (len > count) 1153 len = count; 1154 1155 if (copy_to_user(buffer + ret, &list->hid_debug_buf[list->head], len)) { 1156 ret = -EFAULT; 1157 goto out; 1158 } 1159 ret += len; 1160 list->head += len; 1161 } else { 1162 len = HID_DEBUG_BUFSIZE - list->head; 1163 if (len > count) 1164 len = count; 1165 1166 if (copy_to_user(buffer, &list->hid_debug_buf[list->head], len)) { 1167 ret = -EFAULT; 1168 goto out; 1169 } 1170 list->head = 0; 1171 ret += len; 1172 count -= len; 1173 if (count > 0) 1174 goto copy_rest; 1175 } 1176 1177 } 1178 out: 1179 mutex_unlock(&list->read_mutex); 1180 return ret; 1181 } 1182 1183 static __poll_t hid_debug_events_poll(struct file *file, poll_table *wait) 1184 { 1185 struct hid_debug_list *list = file->private_data; 1186 1187 poll_wait(file, &list->hdev->debug_wait, wait); 1188 if (list->head != list->tail) 1189 return EPOLLIN | EPOLLRDNORM; 1190 if (!list->hdev->debug) 1191 return EPOLLERR | EPOLLHUP; 1192 return 0; 1193 } 1194 1195 static int hid_debug_events_release(struct inode *inode, struct file *file) 1196 { 1197 struct hid_debug_list *list = file->private_data; 1198 unsigned long flags; 1199 1200 spin_lock_irqsave(&list->hdev->debug_list_lock, flags); 1201 list_del(&list->node); 1202 spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags); 1203 kfree(list->hid_debug_buf); 1204 kfree(list); 1205 1206 return 0; 1207 } 1208 1209 DEFINE_SHOW_ATTRIBUTE(hid_debug_rdesc); 1210 1211 static const struct file_operations hid_debug_events_fops = { 1212 .owner = THIS_MODULE, 1213 .open = hid_debug_events_open, 1214 .read = hid_debug_events_read, 1215 .poll = hid_debug_events_poll, 1216 .release = hid_debug_events_release, 1217 .llseek = noop_llseek, 1218 }; 1219 1220 1221 void hid_debug_register(struct hid_device *hdev, const char *name) 1222 { 1223 hdev->debug_dir = debugfs_create_dir(name, hid_debug_root); 1224 hdev->debug_rdesc = debugfs_create_file("rdesc", 0400, 1225 hdev->debug_dir, hdev, &hid_debug_rdesc_fops); 1226 hdev->debug_events = debugfs_create_file("events", 0400, 1227 hdev->debug_dir, hdev, &hid_debug_events_fops); 1228 hdev->debug = 1; 1229 } 1230 1231 void hid_debug_unregister(struct hid_device *hdev) 1232 { 1233 hdev->debug = 0; 1234 wake_up_interruptible(&hdev->debug_wait); 1235 debugfs_remove(hdev->debug_rdesc); 1236 debugfs_remove(hdev->debug_events); 1237 debugfs_remove(hdev->debug_dir); 1238 } 1239 1240 void hid_debug_init(void) 1241 { 1242 hid_debug_root = debugfs_create_dir("hid", NULL); 1243 } 1244 1245 void hid_debug_exit(void) 1246 { 1247 debugfs_remove_recursive(hid_debug_root); 1248 } 1249 1250