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linux/drivers/hid/hid-debug.c
Linus Torvalds a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement 
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00

1254 lines
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/*
* (c) 1999 Andreas Gal <gal@cs.uni-magdeburg.de>
* (c) 2000-2001 Vojtech Pavlik <vojtech@ucw.cz>
* (c) 2007-2009 Jiri Kosina
*
* HID debugging support
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/sched/signal.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/poll.h>
#include <linux/hid.h>
#include <linux/hid-debug.h>
static struct dentry *hid_debug_root;
struct hid_usage_entry {
unsigned page;
unsigned usage;
const char *description;
};
static const struct hid_usage_entry hid_usage_table[] = {
{ 0, 0, "Undefined" },
{ 1, 0, "GenericDesktop" },
{0, 0x01, "Pointer"},
{0, 0x02, "Mouse"},
{0, 0x04, "Joystick"},
{0, 0x05, "GamePad"},
{0, 0x06, "Keyboard"},
{0, 0x07, "Keypad"},
{0, 0x08, "MultiAxis"},
{0, 0x30, "X"},
{0, 0x31, "Y"},
{0, 0x32, "Z"},
{0, 0x33, "Rx"},
{0, 0x34, "Ry"},
{0, 0x35, "Rz"},
{0, 0x36, "Slider"},
{0, 0x37, "Dial"},
{0, 0x38, "Wheel"},
{0, 0x39, "HatSwitch"},
{0, 0x3a, "CountedBuffer"},
{0, 0x3b, "ByteCount"},
{0, 0x3c, "MotionWakeup"},
{0, 0x3d, "Start"},
{0, 0x3e, "Select"},
{0, 0x40, "Vx"},
{0, 0x41, "Vy"},
{0, 0x42, "Vz"},
{0, 0x43, "Vbrx"},
{0, 0x44, "Vbry"},
{0, 0x45, "Vbrz"},
{0, 0x46, "Vno"},
{0, 0x80, "SystemControl"},
{0, 0x81, "SystemPowerDown"},
{0, 0x82, "SystemSleep"},
{0, 0x83, "SystemWakeUp"},
{0, 0x84, "SystemContextMenu"},
{0, 0x85, "SystemMainMenu"},
{0, 0x86, "SystemAppMenu"},
{0, 0x87, "SystemMenuHelp"},
{0, 0x88, "SystemMenuExit"},
{0, 0x89, "SystemMenuSelect"},
{0, 0x8a, "SystemMenuRight"},
{0, 0x8b, "SystemMenuLeft"},
{0, 0x8c, "SystemMenuUp"},
{0, 0x8d, "SystemMenuDown"},
{0, 0x90, "D-PadUp"},
{0, 0x91, "D-PadDown"},
{0, 0x92, "D-PadRight"},
{0, 0x93, "D-PadLeft"},
{ 2, 0, "Simulation" },
{0, 0xb0, "Aileron"},
{0, 0xb1, "AileronTrim"},
{0, 0xb2, "Anti-Torque"},
{0, 0xb3, "Autopilot"},
{0, 0xb4, "Chaff"},
{0, 0xb5, "Collective"},
{0, 0xb6, "DiveBrake"},
{0, 0xb7, "ElectronicCountermeasures"},
{0, 0xb8, "Elevator"},
{0, 0xb9, "ElevatorTrim"},
{0, 0xba, "Rudder"},
{0, 0xbb, "Throttle"},
{0, 0xbc, "FlightCommunications"},
{0, 0xbd, "FlareRelease"},
{0, 0xbe, "LandingGear"},
{0, 0xbf, "ToeBrake"},
{ 6, 0, "GenericDeviceControls" },
{0, 0x20, "BatteryStrength" },
{0, 0x21, "WirelessChannel" },
{0, 0x22, "WirelessID" },
{0, 0x23, "DiscoverWirelessControl" },
{0, 0x24, "SecurityCodeCharacterEntered" },
{0, 0x25, "SecurityCodeCharactedErased" },
{0, 0x26, "SecurityCodeCleared" },
{ 7, 0, "Keyboard" },
{ 8, 0, "LED" },
{0, 0x01, "NumLock"},
{0, 0x02, "CapsLock"},
{0, 0x03, "ScrollLock"},
{0, 0x04, "Compose"},
{0, 0x05, "Kana"},
{0, 0x4b, "GenericIndicator"},
{ 9, 0, "Button" },
{ 10, 0, "Ordinal" },
{ 12, 0, "Consumer" },
{0, 0x238, "HorizontalWheel"},
{ 13, 0, "Digitizers" },
{0, 0x01, "Digitizer"},
{0, 0x02, "Pen"},
{0, 0x03, "LightPen"},
{0, 0x04, "TouchScreen"},
{0, 0x05, "TouchPad"},
{0, 0x0e, "DeviceConfiguration"},
{0, 0x20, "Stylus"},
{0, 0x21, "Puck"},
{0, 0x22, "Finger"},
{0, 0x23, "DeviceSettings"},
{0, 0x30, "TipPressure"},
{0, 0x31, "BarrelPressure"},
{0, 0x32, "InRange"},
{0, 0x33, "Touch"},
{0, 0x34, "UnTouch"},
{0, 0x35, "Tap"},
{0, 0x39, "TabletFunctionKey"},
{0, 0x3a, "ProgramChangeKey"},
{0, 0x3c, "Invert"},
{0, 0x42, "TipSwitch"},
{0, 0x43, "SecondaryTipSwitch"},
{0, 0x44, "BarrelSwitch"},
{0, 0x45, "Eraser"},
{0, 0x46, "TabletPick"},
{0, 0x47, "Confidence"},
{0, 0x48, "Width"},
{0, 0x49, "Height"},
{0, 0x51, "ContactID"},
{0, 0x52, "InputMode"},
{0, 0x53, "DeviceIndex"},
{0, 0x54, "ContactCount"},
{0, 0x55, "ContactMaximumNumber"},
{0, 0x59, "ButtonType"},
{0, 0x5A, "SecondaryBarrelSwitch"},
{0, 0x5B, "TransducerSerialNumber"},
{ 15, 0, "PhysicalInterfaceDevice" },
{0, 0x00, "Undefined"},
{0, 0x01, "Physical_Interface_Device"},
{0, 0x20, "Normal"},
{0, 0x21, "Set_Effect_Report"},
{0, 0x22, "Effect_Block_Index"},
{0, 0x23, "Parameter_Block_Offset"},
{0, 0x24, "ROM_Flag"},
{0, 0x25, "Effect_Type"},
{0, 0x26, "ET_Constant_Force"},
{0, 0x27, "ET_Ramp"},
{0, 0x28, "ET_Custom_Force_Data"},
{0, 0x30, "ET_Square"},
{0, 0x31, "ET_Sine"},
{0, 0x32, "ET_Triangle"},
{0, 0x33, "ET_Sawtooth_Up"},
{0, 0x34, "ET_Sawtooth_Down"},
{0, 0x40, "ET_Spring"},
{0, 0x41, "ET_Damper"},
{0, 0x42, "ET_Inertia"},
{0, 0x43, "ET_Friction"},
{0, 0x50, "Duration"},
{0, 0x51, "Sample_Period"},
{0, 0x52, "Gain"},
{0, 0x53, "Trigger_Button"},
{0, 0x54, "Trigger_Repeat_Interval"},
{0, 0x55, "Axes_Enable"},
{0, 0x56, "Direction_Enable"},
{0, 0x57, "Direction"},
{0, 0x58, "Type_Specific_Block_Offset"},
{0, 0x59, "Block_Type"},
{0, 0x5A, "Set_Envelope_Report"},
{0, 0x5B, "Attack_Level"},
{0, 0x5C, "Attack_Time"},
{0, 0x5D, "Fade_Level"},
{0, 0x5E, "Fade_Time"},
{0, 0x5F, "Set_Condition_Report"},
{0, 0x60, "CP_Offset"},
{0, 0x61, "Positive_Coefficient"},
{0, 0x62, "Negative_Coefficient"},
{0, 0x63, "Positive_Saturation"},
{0, 0x64, "Negative_Saturation"},
{0, 0x65, "Dead_Band"},
{0, 0x66, "Download_Force_Sample"},
{0, 0x67, "Isoch_Custom_Force_Enable"},
{0, 0x68, "Custom_Force_Data_Report"},
{0, 0x69, "Custom_Force_Data"},
{0, 0x6A, "Custom_Force_Vendor_Defined_Data"},
{0, 0x6B, "Set_Custom_Force_Report"},
{0, 0x6C, "Custom_Force_Data_Offset"},
{0, 0x6D, "Sample_Count"},
{0, 0x6E, "Set_Periodic_Report"},
{0, 0x6F, "Offset"},
{0, 0x70, "Magnitude"},
{0, 0x71, "Phase"},
{0, 0x72, "Period"},
{0, 0x73, "Set_Constant_Force_Report"},
{0, 0x74, "Set_Ramp_Force_Report"},
{0, 0x75, "Ramp_Start"},
{0, 0x76, "Ramp_End"},
{0, 0x77, "Effect_Operation_Report"},
{0, 0x78, "Effect_Operation"},
{0, 0x79, "Op_Effect_Start"},
{0, 0x7A, "Op_Effect_Start_Solo"},
{0, 0x7B, "Op_Effect_Stop"},
{0, 0x7C, "Loop_Count"},
{0, 0x7D, "Device_Gain_Report"},
{0, 0x7E, "Device_Gain"},
{0, 0x7F, "PID_Pool_Report"},
{0, 0x80, "RAM_Pool_Size"},
{0, 0x81, "ROM_Pool_Size"},
{0, 0x82, "ROM_Effect_Block_Count"},
{0, 0x83, "Simultaneous_Effects_Max"},
{0, 0x84, "Pool_Alignment"},
{0, 0x85, "PID_Pool_Move_Report"},
{0, 0x86, "Move_Source"},
{0, 0x87, "Move_Destination"},
{0, 0x88, "Move_Length"},
{0, 0x89, "PID_Block_Load_Report"},
{0, 0x8B, "Block_Load_Status"},
{0, 0x8C, "Block_Load_Success"},
{0, 0x8D, "Block_Load_Full"},
{0, 0x8E, "Block_Load_Error"},
{0, 0x8F, "Block_Handle"},
{0, 0x90, "PID_Block_Free_Report"},
{0, 0x91, "Type_Specific_Block_Handle"},
{0, 0x92, "PID_State_Report"},
{0, 0x94, "Effect_Playing"},
{0, 0x95, "PID_Device_Control_Report"},
{0, 0x96, "PID_Device_Control"},
{0, 0x97, "DC_Enable_Actuators"},
{0, 0x98, "DC_Disable_Actuators"},
{0, 0x99, "DC_Stop_All_Effects"},
{0, 0x9A, "DC_Device_Reset"},
{0, 0x9B, "DC_Device_Pause"},
{0, 0x9C, "DC_Device_Continue"},
{0, 0x9F, "Device_Paused"},
{0, 0xA0, "Actuators_Enabled"},
{0, 0xA4, "Safety_Switch"},
{0, 0xA5, "Actuator_Override_Switch"},
{0, 0xA6, "Actuator_Power"},
{0, 0xA7, "Start_Delay"},
{0, 0xA8, "Parameter_Block_Size"},
{0, 0xA9, "Device_Managed_Pool"},
{0, 0xAA, "Shared_Parameter_Blocks"},
{0, 0xAB, "Create_New_Effect_Report"},
{0, 0xAC, "RAM_Pool_Available"},
{ 0x20, 0, "Sensor" },
{ 0x20, 0x01, "Sensor" },
{ 0x20, 0x10, "Biometric" },
{ 0x20, 0x11, "BiometricHumanPresence" },
{ 0x20, 0x12, "BiometricHumanProximity" },
{ 0x20, 0x13, "BiometricHumanTouch" },
{ 0x20, 0x20, "Electrical" },
{ 0x20, 0x21, "ElectricalCapacitance" },
{ 0x20, 0x22, "ElectricalCurrent" },
{ 0x20, 0x23, "ElectricalPower" },
{ 0x20, 0x24, "ElectricalInductance" },
{ 0x20, 0x25, "ElectricalResistance" },
{ 0x20, 0x26, "ElectricalVoltage" },
{ 0x20, 0x27, "ElectricalPoteniometer" },
{ 0x20, 0x28, "ElectricalFrequency" },
{ 0x20, 0x29, "ElectricalPeriod" },
{ 0x20, 0x30, "Environmental" },
{ 0x20, 0x31, "EnvironmentalAtmosphericPressure" },
{ 0x20, 0x32, "EnvironmentalHumidity" },
{ 0x20, 0x33, "EnvironmentalTemperature" },
{ 0x20, 0x34, "EnvironmentalWindDirection" },
{ 0x20, 0x35, "EnvironmentalWindSpeed" },
{ 0x20, 0x40, "Light" },
{ 0x20, 0x41, "LightAmbientLight" },
{ 0x20, 0x42, "LightConsumerInfrared" },
{ 0x20, 0x50, "Location" },
{ 0x20, 0x51, "LocationBroadcast" },
{ 0x20, 0x52, "LocationDeadReckoning" },
{ 0x20, 0x53, "LocationGPS" },
{ 0x20, 0x54, "LocationLookup" },
{ 0x20, 0x55, "LocationOther" },
{ 0x20, 0x56, "LocationStatic" },
{ 0x20, 0x57, "LocationTriangulation" },
{ 0x20, 0x60, "Mechanical" },
{ 0x20, 0x61, "MechanicalBooleanSwitch" },
{ 0x20, 0x62, "MechanicalBooleanSwitchArray" },
{ 0x20, 0x63, "MechanicalMultivalueSwitch" },
{ 0x20, 0x64, "MechanicalForce" },
{ 0x20, 0x65, "MechanicalPressure" },
{ 0x20, 0x66, "MechanicalStrain" },
{ 0x20, 0x67, "MechanicalWeight" },
{ 0x20, 0x68, "MechanicalHapticVibrator" },
{ 0x20, 0x69, "MechanicalHallEffectSwitch" },
{ 0x20, 0x70, "Motion" },
{ 0x20, 0x71, "MotionAccelerometer1D" },
{ 0x20, 0x72, "MotionAccelerometer2D" },
{ 0x20, 0x73, "MotionAccelerometer3D" },
{ 0x20, 0x74, "MotionGyrometer1D" },
{ 0x20, 0x75, "MotionGyrometer2D" },
{ 0x20, 0x76, "MotionGyrometer3D" },
{ 0x20, 0x77, "MotionMotionDetector" },
{ 0x20, 0x78, "MotionSpeedometer" },
{ 0x20, 0x79, "MotionAccelerometer" },
{ 0x20, 0x7A, "MotionGyrometer" },
{ 0x20, 0x80, "Orientation" },
{ 0x20, 0x81, "OrientationCompass1D" },
{ 0x20, 0x82, "OrientationCompass2D" },
{ 0x20, 0x83, "OrientationCompass3D" },
{ 0x20, 0x84, "OrientationInclinometer1D" },
{ 0x20, 0x85, "OrientationInclinometer2D" },
{ 0x20, 0x86, "OrientationInclinometer3D" },
{ 0x20, 0x87, "OrientationDistance1D" },
{ 0x20, 0x88, "OrientationDistance2D" },
{ 0x20, 0x89, "OrientationDistance3D" },
{ 0x20, 0x8A, "OrientationDeviceOrientation" },
{ 0x20, 0x8B, "OrientationCompass" },
{ 0x20, 0x8C, "OrientationInclinometer" },
{ 0x20, 0x8D, "OrientationDistance" },
{ 0x20, 0x90, "Scanner" },
{ 0x20, 0x91, "ScannerBarcode" },
{ 0x20, 0x91, "ScannerRFID" },
{ 0x20, 0x91, "ScannerNFC" },
{ 0x20, 0xA0, "Time" },
{ 0x20, 0xA1, "TimeAlarmTimer" },
{ 0x20, 0xA2, "TimeRealTimeClock" },
{ 0x20, 0xE0, "Other" },
{ 0x20, 0xE1, "OtherCustom" },
{ 0x20, 0xE2, "OtherGeneric" },
{ 0x20, 0xE3, "OtherGenericEnumerator" },
{ 0x84, 0, "Power Device" },
{ 0x84, 0x02, "PresentStatus" },
{ 0x84, 0x03, "ChangeStatus" },
{ 0x84, 0x04, "UPS" },
{ 0x84, 0x05, "PowerSupply" },
{ 0x84, 0x10, "BatterySystem" },
{ 0x84, 0x11, "BatterySystemID" },
{ 0x84, 0x12, "Battery" },
{ 0x84, 0x13, "BatteryID" },
{ 0x84, 0x14, "Charger" },
{ 0x84, 0x15, "ChargerID" },
{ 0x84, 0x16, "PowerConverter" },
{ 0x84, 0x17, "PowerConverterID" },
{ 0x84, 0x18, "OutletSystem" },
{ 0x84, 0x19, "OutletSystemID" },
{ 0x84, 0x1a, "Input" },
{ 0x84, 0x1b, "InputID" },
{ 0x84, 0x1c, "Output" },
{ 0x84, 0x1d, "OutputID" },
{ 0x84, 0x1e, "Flow" },
{ 0x84, 0x1f, "FlowID" },
{ 0x84, 0x20, "Outlet" },
{ 0x84, 0x21, "OutletID" },
{ 0x84, 0x22, "Gang" },
{ 0x84, 0x24, "PowerSummary" },
{ 0x84, 0x25, "PowerSummaryID" },
{ 0x84, 0x30, "Voltage" },
{ 0x84, 0x31, "Current" },
{ 0x84, 0x32, "Frequency" },
{ 0x84, 0x33, "ApparentPower" },
{ 0x84, 0x35, "PercentLoad" },
{ 0x84, 0x40, "ConfigVoltage" },
{ 0x84, 0x41, "ConfigCurrent" },
{ 0x84, 0x43, "ConfigApparentPower" },
{ 0x84, 0x53, "LowVoltageTransfer" },
{ 0x84, 0x54, "HighVoltageTransfer" },
{ 0x84, 0x56, "DelayBeforeStartup" },
{ 0x84, 0x57, "DelayBeforeShutdown" },
{ 0x84, 0x58, "Test" },
{ 0x84, 0x5a, "AudibleAlarmControl" },
{ 0x84, 0x60, "Present" },
{ 0x84, 0x61, "Good" },
{ 0x84, 0x62, "InternalFailure" },
{ 0x84, 0x65, "Overload" },
{ 0x84, 0x66, "OverCharged" },
{ 0x84, 0x67, "OverTemperature" },
{ 0x84, 0x68, "ShutdownRequested" },
{ 0x84, 0x69, "ShutdownImminent" },
{ 0x84, 0x6b, "SwitchOn/Off" },
{ 0x84, 0x6c, "Switchable" },
{ 0x84, 0x6d, "Used" },
{ 0x84, 0x6e, "Boost" },
{ 0x84, 0x73, "CommunicationLost" },
{ 0x84, 0xfd, "iManufacturer" },
{ 0x84, 0xfe, "iProduct" },
{ 0x84, 0xff, "iSerialNumber" },
{ 0x85, 0, "Battery System" },
{ 0x85, 0x01, "SMBBatteryMode" },
{ 0x85, 0x02, "SMBBatteryStatus" },
{ 0x85, 0x03, "SMBAlarmWarning" },
{ 0x85, 0x04, "SMBChargerMode" },
{ 0x85, 0x05, "SMBChargerStatus" },
{ 0x85, 0x06, "SMBChargerSpecInfo" },
{ 0x85, 0x07, "SMBSelectorState" },
{ 0x85, 0x08, "SMBSelectorPresets" },
{ 0x85, 0x09, "SMBSelectorInfo" },
{ 0x85, 0x29, "RemainingCapacityLimit" },
{ 0x85, 0x2c, "CapacityMode" },
{ 0x85, 0x42, "BelowRemainingCapacityLimit" },
{ 0x85, 0x44, "Charging" },
{ 0x85, 0x45, "Discharging" },
{ 0x85, 0x4b, "NeedReplacement" },
{ 0x85, 0x66, "RemainingCapacity" },
{ 0x85, 0x68, "RunTimeToEmpty" },
{ 0x85, 0x6a, "AverageTimeToFull" },
{ 0x85, 0x83, "DesignCapacity" },
{ 0x85, 0x85, "ManufacturerDate" },
{ 0x85, 0x89, "iDeviceChemistry" },
{ 0x85, 0x8b, "Rechargeable" },
{ 0x85, 0x8f, "iOEMInformation" },
{ 0x85, 0x8d, "CapacityGranularity1" },
{ 0x85, 0xd0, "ACPresent" },
/* pages 0xff00 to 0xffff are vendor-specific */
{ 0xffff, 0, "Vendor-specific-FF" },
{ 0, 0, NULL }
};
/* Either output directly into simple seq_file, or (if f == NULL)
* allocate a separate buffer that will then be passed to the 'events'
* ringbuffer.
*
* This is because these functions can be called both for "one-shot"
* "rdesc" while resolving, or for blocking "events".
*
* This holds both for resolv_usage_page() and hid_resolv_usage().
*/
static char *resolv_usage_page(unsigned page, struct seq_file *f) {
const struct hid_usage_entry *p;
char *buf = NULL;
if (!f) {
buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
if (!buf)
return ERR_PTR(-ENOMEM);
}
for (p = hid_usage_table; p->description; p++)
if (p->page == page) {
if (!f) {
snprintf(buf, HID_DEBUG_BUFSIZE, "%s",
p->description);
return buf;
}
else {
seq_printf(f, "%s", p->description);
return NULL;
}
}
if (!f)
snprintf(buf, HID_DEBUG_BUFSIZE, "%04x", page);
else
seq_printf(f, "%04x", page);
return buf;
}
char *hid_resolv_usage(unsigned usage, struct seq_file *f) {
const struct hid_usage_entry *p;
char *buf = NULL;
int len = 0;
buf = resolv_usage_page(usage >> 16, f);
if (IS_ERR(buf)) {
pr_err("error allocating HID debug buffer\n");
return NULL;
}
if (!f) {
len = strlen(buf);
snprintf(buf+len, max(0, HID_DEBUG_BUFSIZE - len), ".");
len++;
}
else {
seq_printf(f, ".");
}
for (p = hid_usage_table; p->description; p++)
if (p->page == (usage >> 16)) {
for(++p; p->description && p->usage != 0; p++)
if (p->usage == (usage & 0xffff)) {
if (!f)
snprintf(buf + len,
max(0,HID_DEBUG_BUFSIZE - len - 1),
"%s", p->description);
else
seq_printf(f,
"%s",
p->description);
return buf;
}
break;
}
if (!f)
snprintf(buf + len, max(0, HID_DEBUG_BUFSIZE - len - 1),
"%04x", usage & 0xffff);
else
seq_printf(f, "%04x", usage & 0xffff);
return buf;
}
EXPORT_SYMBOL_GPL(hid_resolv_usage);
static void tab(int n, struct seq_file *f) {
seq_printf(f, "%*s", n, "");
}
void hid_dump_field(struct hid_field *field, int n, struct seq_file *f) {
int j;
if (field->physical) {
tab(n, f);
seq_printf(f, "Physical(");
hid_resolv_usage(field->physical, f); seq_printf(f, ")\n");
}
if (field->logical) {
tab(n, f);
seq_printf(f, "Logical(");
hid_resolv_usage(field->logical, f); seq_printf(f, ")\n");
}
if (field->application) {
tab(n, f);
seq_printf(f, "Application(");
hid_resolv_usage(field->application, f); seq_printf(f, ")\n");
}
tab(n, f); seq_printf(f, "Usage(%d)\n", field->maxusage);
for (j = 0; j < field->maxusage; j++) {
tab(n+2, f); hid_resolv_usage(field->usage[j].hid, f); seq_printf(f, "\n");
}
if (field->logical_minimum != field->logical_maximum) {
tab(n, f); seq_printf(f, "Logical Minimum(%d)\n", field->logical_minimum);
tab(n, f); seq_printf(f, "Logical Maximum(%d)\n", field->logical_maximum);
}
if (field->physical_minimum != field->physical_maximum) {
tab(n, f); seq_printf(f, "Physical Minimum(%d)\n", field->physical_minimum);
tab(n, f); seq_printf(f, "Physical Maximum(%d)\n", field->physical_maximum);
}
if (field->unit_exponent) {
tab(n, f); seq_printf(f, "Unit Exponent(%d)\n", field->unit_exponent);
}
if (field->unit) {
static const char *systems[5] = { "None", "SI Linear", "SI Rotation", "English Linear", "English Rotation" };
static const char *units[5][8] = {
{ "None", "None", "None", "None", "None", "None", "None", "None" },
{ "None", "Centimeter", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" },
{ "None", "Radians", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" },
{ "None", "Inch", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" },
{ "None", "Degrees", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" }
};
int i;
int sys;
__u32 data = field->unit;
/* First nibble tells us which system we're in. */
sys = data & 0xf;
data >>= 4;
if(sys > 4) {
tab(n, f); seq_printf(f, "Unit(Invalid)\n");
}
else {
int earlier_unit = 0;
tab(n, f); seq_printf(f, "Unit(%s : ", systems[sys]);
for (i=1 ; i<sizeof(__u32)*2 ; i++) {
char nibble = data & 0xf;
data >>= 4;
if (nibble != 0) {
if(earlier_unit++ > 0)
seq_printf(f, "*");
seq_printf(f, "%s", units[sys][i]);
if(nibble != 1) {
/* This is a _signed_ nibble(!) */
int val = nibble & 0x7;
if(nibble & 0x08)
val = -((0x7 & ~val) +1);
seq_printf(f, "^%d", val);
}
}
}
seq_printf(f, ")\n");
}
}
tab(n, f); seq_printf(f, "Report Size(%u)\n", field->report_size);
tab(n, f); seq_printf(f, "Report Count(%u)\n", field->report_count);
tab(n, f); seq_printf(f, "Report Offset(%u)\n", field->report_offset);
tab(n, f); seq_printf(f, "Flags( ");
j = field->flags;
seq_printf(f, "%s", HID_MAIN_ITEM_CONSTANT & j ? "Constant " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_VARIABLE & j ? "Variable " : "Array ");
seq_printf(f, "%s", HID_MAIN_ITEM_RELATIVE & j ? "Relative " : "Absolute ");
seq_printf(f, "%s", HID_MAIN_ITEM_WRAP & j ? "Wrap " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_NONLINEAR & j ? "NonLinear " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_NO_PREFERRED & j ? "NoPreferredState " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_NULL_STATE & j ? "NullState " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_VOLATILE & j ? "Volatile " : "");
seq_printf(f, "%s", HID_MAIN_ITEM_BUFFERED_BYTE & j ? "BufferedByte " : "");
seq_printf(f, ")\n");
}
EXPORT_SYMBOL_GPL(hid_dump_field);
void hid_dump_device(struct hid_device *device, struct seq_file *f)
{
struct hid_report_enum *report_enum;
struct hid_report *report;
struct list_head *list;
unsigned i,k;
static const char *table[] = {"INPUT", "OUTPUT", "FEATURE"};
for (i = 0; i < HID_REPORT_TYPES; i++) {
report_enum = device->report_enum + i;
list = report_enum->report_list.next;
while (list != &report_enum->report_list) {
report = (struct hid_report *) list;
tab(2, f);
seq_printf(f, "%s", table[i]);
if (report->id)
seq_printf(f, "(%d)", report->id);
seq_printf(f, "[%s]", table[report->type]);
seq_printf(f, "\n");
for (k = 0; k < report->maxfield; k++) {
tab(4, f);
seq_printf(f, "Field(%d)\n", k);
hid_dump_field(report->field[k], 6, f);
}
list = list->next;
}
}
}
EXPORT_SYMBOL_GPL(hid_dump_device);
/* enqueue string to 'events' ring buffer */
void hid_debug_event(struct hid_device *hdev, char *buf)
{
unsigned i;
struct hid_debug_list *list;
unsigned long flags;
spin_lock_irqsave(&hdev->debug_list_lock, flags);
list_for_each_entry(list, &hdev->debug_list, node) {
for (i = 0; buf[i]; i++)
list->hid_debug_buf[(list->tail + i) % HID_DEBUG_BUFSIZE] =
buf[i];
list->tail = (list->tail + i) % HID_DEBUG_BUFSIZE;
}
spin_unlock_irqrestore(&hdev->debug_list_lock, flags);
wake_up_interruptible(&hdev->debug_wait);
}
EXPORT_SYMBOL_GPL(hid_debug_event);
void hid_dump_report(struct hid_device *hid, int type, u8 *data,
int size)
{
struct hid_report_enum *report_enum;
char *buf;
unsigned int i;
buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
if (!buf)
return;
report_enum = hid->report_enum + type;
/* dump the report */
snprintf(buf, HID_DEBUG_BUFSIZE - 1,
"\nreport (size %u) (%snumbered) = ", size,
report_enum->numbered ? "" : "un");
hid_debug_event(hid, buf);
for (i = 0; i < size; i++) {
snprintf(buf, HID_DEBUG_BUFSIZE - 1,
" %02x", data[i]);
hid_debug_event(hid, buf);
}
hid_debug_event(hid, "\n");
kfree(buf);
}
EXPORT_SYMBOL_GPL(hid_dump_report);
void hid_dump_input(struct hid_device *hdev, struct hid_usage *usage, __s32 value)
{
char *buf;
int len;
buf = hid_resolv_usage(usage->hid, NULL);
if (!buf)
return;
len = strlen(buf);
snprintf(buf + len, HID_DEBUG_BUFSIZE - len - 1, " = %d\n", value);
hid_debug_event(hdev, buf);
kfree(buf);
wake_up_interruptible(&hdev->debug_wait);
}
EXPORT_SYMBOL_GPL(hid_dump_input);
static const char *events[EV_MAX + 1] = {
[EV_SYN] = "Sync", [EV_KEY] = "Key",
[EV_REL] = "Relative", [EV_ABS] = "Absolute",
[EV_MSC] = "Misc", [EV_LED] = "LED",
[EV_SND] = "Sound", [EV_REP] = "Repeat",
[EV_FF] = "ForceFeedback", [EV_PWR] = "Power",
[EV_FF_STATUS] = "ForceFeedbackStatus",
};
static const char *syncs[3] = {
[SYN_REPORT] = "Report", [SYN_CONFIG] = "Config",
[SYN_MT_REPORT] = "MT Report",
};
static const char *keys[KEY_MAX + 1] = {
[KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
[KEY_1] = "1", [KEY_2] = "2",
[KEY_3] = "3", [KEY_4] = "4",
[KEY_5] = "5", [KEY_6] = "6",
[KEY_7] = "7", [KEY_8] = "8",
[KEY_9] = "9", [KEY_0] = "0",
[KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
[KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
[KEY_Q] = "Q", [KEY_W] = "W",
[KEY_E] = "E", [KEY_R] = "R",
[KEY_T] = "T", [KEY_Y] = "Y",
[KEY_U] = "U", [KEY_I] = "I",
[KEY_O] = "O", [KEY_P] = "P",
[KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
[KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
[KEY_A] = "A", [KEY_S] = "S",
[KEY_D] = "D", [KEY_F] = "F",
[KEY_G] = "G", [KEY_H] = "H",
[KEY_J] = "J", [KEY_K] = "K",
[KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
[KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
[KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
[KEY_Z] = "Z", [KEY_X] = "X",
[KEY_C] = "C", [KEY_V] = "V",
[KEY_B] = "B", [KEY_N] = "N",
[KEY_M] = "M", [KEY_COMMA] = "Comma",
[KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
[KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
[KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
[KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
[KEY_F2] = "F2", [KEY_F3] = "F3",
[KEY_F4] = "F4", [KEY_F5] = "F5",
[KEY_F6] = "F6", [KEY_F7] = "F7",
[KEY_F8] = "F8", [KEY_F9] = "F9",
[KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
[KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
[KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
[KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
[KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
[KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
[KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
[KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
[KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
[KEY_F11] = "F11", [KEY_F12] = "F12",
[KEY_RO] = "RO", [KEY_KATAKANA] = "Katakana",
[KEY_HIRAGANA] = "HIRAGANA", [KEY_HENKAN] = "Henkan",
[KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan",
[KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
[KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
[KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
[KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
[KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
[KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
[KEY_END] = "End", [KEY_DOWN] = "Down",
[KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
[KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
[KEY_MUTE] = "Mute", [KEY_VOLUMEDOWN] = "VolumeDown",
[KEY_VOLUMEUP] = "VolumeUp", [KEY_POWER] = "Power",
[KEY_KPEQUAL] = "KPEqual", [KEY_KPPLUSMINUS] = "KPPlusMinus",
[KEY_PAUSE] = "Pause", [KEY_KPCOMMA] = "KPComma",
[KEY_HANGUEL] = "Hangeul", [KEY_HANJA] = "Hanja",
[KEY_YEN] = "Yen", [KEY_LEFTMETA] = "LeftMeta",
[KEY_RIGHTMETA] = "RightMeta", [KEY_COMPOSE] = "Compose",
[KEY_STOP] = "Stop", [KEY_AGAIN] = "Again",
[KEY_PROPS] = "Props", [KEY_UNDO] = "Undo",
[KEY_FRONT] = "Front", [KEY_COPY] = "Copy",
[KEY_OPEN] = "Open", [KEY_PASTE] = "Paste",
[KEY_FIND] = "Find", [KEY_CUT] = "Cut",
[KEY_HELP] = "Help", [KEY_MENU] = "Menu",
[KEY_CALC] = "Calc", [KEY_SETUP] = "Setup",
[KEY_SLEEP] = "Sleep", [KEY_WAKEUP] = "WakeUp",
[KEY_FILE] = "File", [KEY_SENDFILE] = "SendFile",
[KEY_DELETEFILE] = "DeleteFile", [KEY_XFER] = "X-fer",
[KEY_PROG1] = "Prog1", [KEY_PROG2] = "Prog2",
[KEY_WWW] = "WWW", [KEY_MSDOS] = "MSDOS",
[KEY_COFFEE] = "Coffee", [KEY_ROTATE_DISPLAY] = "RotateDisplay",
[KEY_CYCLEWINDOWS] = "CycleWindows", [KEY_MAIL] = "Mail",
[KEY_BOOKMARKS] = "Bookmarks", [KEY_COMPUTER] = "Computer",
[KEY_BACK] = "Back", [KEY_FORWARD] = "Forward",
[KEY_CLOSECD] = "CloseCD", [KEY_EJECTCD] = "EjectCD",
[KEY_EJECTCLOSECD] = "EjectCloseCD", [KEY_NEXTSONG] = "NextSong",
[KEY_PLAYPAUSE] = "PlayPause", [KEY_PREVIOUSSONG] = "PreviousSong",
[KEY_STOPCD] = "StopCD", [KEY_RECORD] = "Record",
[KEY_REWIND] = "Rewind", [KEY_PHONE] = "Phone",
[KEY_ISO] = "ISOKey", [KEY_CONFIG] = "Config",
[KEY_HOMEPAGE] = "HomePage", [KEY_REFRESH] = "Refresh",
[KEY_EXIT] = "Exit", [KEY_MOVE] = "Move",
[KEY_EDIT] = "Edit", [KEY_SCROLLUP] = "ScrollUp",
[KEY_SCROLLDOWN] = "ScrollDown", [KEY_KPLEFTPAREN] = "KPLeftParenthesis",
[KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_NEW] = "New",
[KEY_REDO] = "Redo", [KEY_F13] = "F13",
[KEY_F14] = "F14", [KEY_F15] = "F15",
[KEY_F16] = "F16", [KEY_F17] = "F17",
[KEY_F18] = "F18", [KEY_F19] = "F19",
[KEY_F20] = "F20", [KEY_F21] = "F21",
[KEY_F22] = "F22", [KEY_F23] = "F23",
[KEY_F24] = "F24", [KEY_PLAYCD] = "PlayCD",
[KEY_PAUSECD] = "PauseCD", [KEY_PROG3] = "Prog3",
[KEY_PROG4] = "Prog4", [KEY_SUSPEND] = "Suspend",
[KEY_CLOSE] = "Close", [KEY_PLAY] = "Play",
[KEY_FASTFORWARD] = "FastForward", [KEY_BASSBOOST] = "BassBoost",
[KEY_PRINT] = "Print", [KEY_HP] = "HP",
[KEY_CAMERA] = "Camera", [KEY_SOUND] = "Sound",
[KEY_QUESTION] = "Question", [KEY_EMAIL] = "Email",
[KEY_CHAT] = "Chat", [KEY_SEARCH] = "Search",
[KEY_CONNECT] = "Connect", [KEY_FINANCE] = "Finance",
[KEY_SPORT] = "Sport", [KEY_SHOP] = "Shop",
[KEY_ALTERASE] = "AlternateErase", [KEY_CANCEL] = "Cancel",
[KEY_BRIGHTNESSDOWN] = "BrightnessDown", [KEY_BRIGHTNESSUP] = "BrightnessUp",
[KEY_MEDIA] = "Media", [KEY_UNKNOWN] = "Unknown",
[BTN_DPAD_UP] = "BtnDPadUp", [BTN_DPAD_DOWN] = "BtnDPadDown",
[BTN_DPAD_LEFT] = "BtnDPadLeft", [BTN_DPAD_RIGHT] = "BtnDPadRight",
[BTN_0] = "Btn0", [BTN_1] = "Btn1",
[BTN_2] = "Btn2", [BTN_3] = "Btn3",
[BTN_4] = "Btn4", [BTN_5] = "Btn5",
[BTN_6] = "Btn6", [BTN_7] = "Btn7",
[BTN_8] = "Btn8", [BTN_9] = "Btn9",
[BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
[BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
[BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
[BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
[BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
[BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
[BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
[BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
[BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
[BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
[BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
[BTN_B] = "BtnB", [BTN_C] = "BtnC",
[BTN_X] = "BtnX", [BTN_Y] = "BtnY",
[BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
[BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
[BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
[BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
[BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
[BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber",
[BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil",
[BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger",
[BTN_TOOL_MOUSE] = "ToolMouse", [BTN_TOOL_LENS] = "ToolLens",
[BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
[BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "ToolDoubleTap",
[BTN_TOOL_TRIPLETAP] = "ToolTripleTap", [BTN_TOOL_QUADTAP] = "ToolQuadrupleTap",
[BTN_GEAR_DOWN] = "WheelBtn",
[BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
[KEY_SELECT] = "Select", [KEY_GOTO] = "Goto",
[KEY_CLEAR] = "Clear", [KEY_POWER2] = "Power2",
[KEY_OPTION] = "Option", [KEY_INFO] = "Info",
[KEY_TIME] = "Time", [KEY_VENDOR] = "Vendor",
[KEY_ARCHIVE] = "Archive", [KEY_PROGRAM] = "Program",
[KEY_CHANNEL] = "Channel", [KEY_FAVORITES] = "Favorites",
[KEY_EPG] = "EPG", [KEY_PVR] = "PVR",
[KEY_MHP] = "MHP", [KEY_LANGUAGE] = "Language",
[KEY_TITLE] = "Title", [KEY_SUBTITLE] = "Subtitle",
[KEY_ANGLE] = "Angle", [KEY_ZOOM] = "Zoom",
[KEY_MODE] = "Mode", [KEY_KEYBOARD] = "Keyboard",
[KEY_SCREEN] = "Screen", [KEY_PC] = "PC",
[KEY_TV] = "TV", [KEY_TV2] = "TV2",
[KEY_VCR] = "VCR", [KEY_VCR2] = "VCR2",
[KEY_SAT] = "Sat", [KEY_SAT2] = "Sat2",
[KEY_CD] = "CD", [KEY_TAPE] = "Tape",
[KEY_RADIO] = "Radio", [KEY_TUNER] = "Tuner",
[KEY_PLAYER] = "Player", [KEY_TEXT] = "Text",
[KEY_DVD] = "DVD", [KEY_AUX] = "Aux",
[KEY_MP3] = "MP3", [KEY_AUDIO] = "Audio",
[KEY_VIDEO] = "Video", [KEY_DIRECTORY] = "Directory",
[KEY_LIST] = "List", [KEY_MEMO] = "Memo",
[KEY_CALENDAR] = "Calendar", [KEY_RED] = "Red",
[KEY_GREEN] = "Green", [KEY_YELLOW] = "Yellow",
[KEY_BLUE] = "Blue", [KEY_CHANNELUP] = "ChannelUp",
[KEY_CHANNELDOWN] = "ChannelDown", [KEY_FIRST] = "First",
[KEY_LAST] = "Last", [KEY_AB] = "AB",
[KEY_NEXT] = "Next", [KEY_RESTART] = "Restart",
[KEY_SLOW] = "Slow", [KEY_SHUFFLE] = "Shuffle",
[KEY_BREAK] = "Break", [KEY_PREVIOUS] = "Previous",
[KEY_DIGITS] = "Digits", [KEY_TEEN] = "TEEN",
[KEY_TWEN] = "TWEN", [KEY_DEL_EOL] = "DeleteEOL",
[KEY_DEL_EOS] = "DeleteEOS", [KEY_INS_LINE] = "InsertLine",
[KEY_DEL_LINE] = "DeleteLine",
[KEY_SEND] = "Send", [KEY_REPLY] = "Reply",
[KEY_FORWARDMAIL] = "ForwardMail", [KEY_SAVE] = "Save",
[KEY_DOCUMENTS] = "Documents", [KEY_SPELLCHECK] = "SpellCheck",
[KEY_LOGOFF] = "Logoff",
[KEY_FN] = "Fn", [KEY_FN_ESC] = "Fn+ESC",
[KEY_FN_1] = "Fn+1", [KEY_FN_2] = "Fn+2",
[KEY_FN_B] = "Fn+B", [KEY_FN_D] = "Fn+D",
[KEY_FN_E] = "Fn+E", [KEY_FN_F] = "Fn+F",
[KEY_FN_S] = "Fn+S",
[KEY_FN_F1] = "Fn+F1", [KEY_FN_F2] = "Fn+F2",
[KEY_FN_F3] = "Fn+F3", [KEY_FN_F4] = "Fn+F4",
[KEY_FN_F5] = "Fn+F5", [KEY_FN_F6] = "Fn+F6",
[KEY_FN_F7] = "Fn+F7", [KEY_FN_F8] = "Fn+F8",
[KEY_FN_F9] = "Fn+F9", [KEY_FN_F10] = "Fn+F10",
[KEY_FN_F11] = "Fn+F11", [KEY_FN_F12] = "Fn+F12",
[KEY_KBDILLUMTOGGLE] = "KbdIlluminationToggle",
[KEY_KBDILLUMDOWN] = "KbdIlluminationDown",
[KEY_KBDILLUMUP] = "KbdIlluminationUp",
[KEY_SWITCHVIDEOMODE] = "SwitchVideoMode",
[KEY_BUTTONCONFIG] = "ButtonConfig",
[KEY_TASKMANAGER] = "TaskManager",
[KEY_JOURNAL] = "Journal",
[KEY_CONTROLPANEL] = "ControlPanel",
[KEY_APPSELECT] = "AppSelect",
[KEY_SCREENSAVER] = "ScreenSaver",
[KEY_VOICECOMMAND] = "VoiceCommand",
[KEY_BRIGHTNESS_MIN] = "BrightnessMin",
[KEY_BRIGHTNESS_MAX] = "BrightnessMax",
[KEY_BRIGHTNESS_AUTO] = "BrightnessAuto",
[KEY_KBDINPUTASSIST_PREV] = "KbdInputAssistPrev",
[KEY_KBDINPUTASSIST_NEXT] = "KbdInputAssistNext",
[KEY_KBDINPUTASSIST_PREVGROUP] = "KbdInputAssistPrevGroup",
[KEY_KBDINPUTASSIST_NEXTGROUP] = "KbdInputAssistNextGroup",
[KEY_KBDINPUTASSIST_ACCEPT] = "KbdInputAssistAccept",
[KEY_KBDINPUTASSIST_CANCEL] = "KbdInputAssistCancel",
};
static const char *relatives[REL_MAX + 1] = {
[REL_X] = "X", [REL_Y] = "Y",
[REL_Z] = "Z", [REL_RX] = "Rx",
[REL_RY] = "Ry", [REL_RZ] = "Rz",
[REL_HWHEEL] = "HWheel", [REL_DIAL] = "Dial",
[REL_WHEEL] = "Wheel", [REL_MISC] = "Misc",
};
static const char *absolutes[ABS_CNT] = {
[ABS_X] = "X", [ABS_Y] = "Y",
[ABS_Z] = "Z", [ABS_RX] = "Rx",
[ABS_RY] = "Ry", [ABS_RZ] = "Rz",
[ABS_THROTTLE] = "Throttle", [ABS_RUDDER] = "Rudder",
[ABS_WHEEL] = "Wheel", [ABS_GAS] = "Gas",
[ABS_BRAKE] = "Brake", [ABS_HAT0X] = "Hat0X",
[ABS_HAT0Y] = "Hat0Y", [ABS_HAT1X] = "Hat1X",
[ABS_HAT1Y] = "Hat1Y", [ABS_HAT2X] = "Hat2X",
[ABS_HAT2Y] = "Hat2Y", [ABS_HAT3X] = "Hat3X",
[ABS_HAT3Y] = "Hat 3Y", [ABS_PRESSURE] = "Pressure",
[ABS_DISTANCE] = "Distance", [ABS_TILT_X] = "XTilt",
[ABS_TILT_Y] = "YTilt", [ABS_TOOL_WIDTH] = "ToolWidth",
[ABS_VOLUME] = "Volume", [ABS_MISC] = "Misc",
[ABS_MT_TOUCH_MAJOR] = "MTMajor",
[ABS_MT_TOUCH_MINOR] = "MTMinor",
[ABS_MT_WIDTH_MAJOR] = "MTMajorW",
[ABS_MT_WIDTH_MINOR] = "MTMinorW",
[ABS_MT_ORIENTATION] = "MTOrientation",
[ABS_MT_POSITION_X] = "MTPositionX",
[ABS_MT_POSITION_Y] = "MTPositionY",
[ABS_MT_TOOL_TYPE] = "MTToolType",
[ABS_MT_BLOB_ID] = "MTBlobID",
};
static const char *misc[MSC_MAX + 1] = {
[MSC_SERIAL] = "Serial", [MSC_PULSELED] = "Pulseled",
[MSC_GESTURE] = "Gesture", [MSC_RAW] = "RawData"
};
static const char *leds[LED_MAX + 1] = {
[LED_NUML] = "NumLock", [LED_CAPSL] = "CapsLock",
[LED_SCROLLL] = "ScrollLock", [LED_COMPOSE] = "Compose",
[LED_KANA] = "Kana", [LED_SLEEP] = "Sleep",
[LED_SUSPEND] = "Suspend", [LED_MUTE] = "Mute",
[LED_MISC] = "Misc",
};
static const char *repeats[REP_MAX + 1] = {
[REP_DELAY] = "Delay", [REP_PERIOD] = "Period"
};
static const char *sounds[SND_MAX + 1] = {
[SND_CLICK] = "Click", [SND_BELL] = "Bell",
[SND_TONE] = "Tone"
};
static const char **names[EV_MAX + 1] = {
[EV_SYN] = syncs, [EV_KEY] = keys,
[EV_REL] = relatives, [EV_ABS] = absolutes,
[EV_MSC] = misc, [EV_LED] = leds,
[EV_SND] = sounds, [EV_REP] = repeats,
};
static void hid_resolv_event(__u8 type, __u16 code, struct seq_file *f)
{
seq_printf(f, "%s.%s", events[type] ? events[type] : "?",
names[type] ? (names[type][code] ? names[type][code] : "?") : "?");
}
static void hid_dump_input_mapping(struct hid_device *hid, struct seq_file *f)
{
int i, j, k;
struct hid_report *report;
struct hid_usage *usage;
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
for (i = 0; i < report->maxfield; i++) {
for ( j = 0; j < report->field[i]->maxusage; j++) {
usage = report->field[i]->usage + j;
hid_resolv_usage(usage->hid, f);
seq_printf(f, " ---> ");
hid_resolv_event(usage->type, usage->code, f);
seq_printf(f, "\n");
}
}
}
}
}
static int hid_debug_rdesc_show(struct seq_file *f, void *p)
{
struct hid_device *hdev = f->private;
const __u8 *rdesc = hdev->rdesc;
unsigned rsize = hdev->rsize;
int i;
if (!rdesc) {
rdesc = hdev->dev_rdesc;
rsize = hdev->dev_rsize;
}
/* dump HID report descriptor */
for (i = 0; i < rsize; i++)
seq_printf(f, "%02x ", rdesc[i]);
seq_printf(f, "\n\n");
/* dump parsed data and input mappings */
hid_dump_device(hdev, f);
seq_printf(f, "\n");
hid_dump_input_mapping(hdev, f);
return 0;
}
static int hid_debug_rdesc_open(struct inode *inode, struct file *file)
{
return single_open(file, hid_debug_rdesc_show, inode->i_private);
}
static int hid_debug_events_open(struct inode *inode, struct file *file)
{
int err = 0;
struct hid_debug_list *list;
unsigned long flags;
if (!(list = kzalloc(sizeof(struct hid_debug_list), GFP_KERNEL))) {
err = -ENOMEM;
goto out;
}
if (!(list->hid_debug_buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_KERNEL))) {
err = -ENOMEM;
kfree(list);
goto out;
}
list->hdev = (struct hid_device *) inode->i_private;
file->private_data = list;
mutex_init(&list->read_mutex);
spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
list_add_tail(&list->node, &list->hdev->debug_list);
spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
out:
return err;
}
static ssize_t hid_debug_events_read(struct file *file, char __user *buffer,
size_t count, loff_t *ppos)
{
struct hid_debug_list *list = file->private_data;
int ret = 0, len;
DECLARE_WAITQUEUE(wait, current);
mutex_lock(&list->read_mutex);
while (ret == 0) {
if (list->head == list->tail) {
add_wait_queue(&list->hdev->debug_wait, &wait);
set_current_state(TASK_INTERRUPTIBLE);
while (list->head == list->tail) {
if (file->f_flags & O_NONBLOCK) {
ret = -EAGAIN;
break;
}
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
}
if (!list->hdev || !list->hdev->debug) {
ret = -EIO;
set_current_state(TASK_RUNNING);
goto out;
}
/* allow O_NONBLOCK from other threads */
mutex_unlock(&list->read_mutex);
schedule();
mutex_lock(&list->read_mutex);
set_current_state(TASK_INTERRUPTIBLE);
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&list->hdev->debug_wait, &wait);
}
if (ret)
goto out;
/* pass the ringbuffer contents to userspace */
copy_rest:
if (list->tail == list->head)
goto out;
if (list->tail > list->head) {
len = list->tail - list->head;
if (copy_to_user(buffer + ret, &list->hid_debug_buf[list->head], len)) {
ret = -EFAULT;
goto out;
}
ret += len;
list->head += len;
} else {
len = HID_DEBUG_BUFSIZE - list->head;
if (copy_to_user(buffer, &list->hid_debug_buf[list->head], len)) {
ret = -EFAULT;
goto out;
}
list->head = 0;
ret += len;
goto copy_rest;
}
}
out:
mutex_unlock(&list->read_mutex);
return ret;
}
static __poll_t hid_debug_events_poll(struct file *file, poll_table *wait)
{
struct hid_debug_list *list = file->private_data;
poll_wait(file, &list->hdev->debug_wait, wait);
if (list->head != list->tail)
return EPOLLIN | EPOLLRDNORM;
if (!list->hdev->debug)
return EPOLLERR | EPOLLHUP;
return 0;
}
static int hid_debug_events_release(struct inode *inode, struct file *file)
{
struct hid_debug_list *list = file->private_data;
unsigned long flags;
spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
list_del(&list->node);
spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
kfree(list->hid_debug_buf);
kfree(list);
return 0;
}
static const struct file_operations hid_debug_rdesc_fops = {
.open = hid_debug_rdesc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations hid_debug_events_fops = {
.owner = THIS_MODULE,
.open = hid_debug_events_open,
.read = hid_debug_events_read,
.poll = hid_debug_events_poll,
.release = hid_debug_events_release,
.llseek = noop_llseek,
};
void hid_debug_register(struct hid_device *hdev, const char *name)
{
hdev->debug_dir = debugfs_create_dir(name, hid_debug_root);
hdev->debug_rdesc = debugfs_create_file("rdesc", 0400,
hdev->debug_dir, hdev, &hid_debug_rdesc_fops);
hdev->debug_events = debugfs_create_file("events", 0400,
hdev->debug_dir, hdev, &hid_debug_events_fops);
hdev->debug = 1;
}
void hid_debug_unregister(struct hid_device *hdev)
{
hdev->debug = 0;
wake_up_interruptible(&hdev->debug_wait);
debugfs_remove(hdev->debug_rdesc);
debugfs_remove(hdev->debug_events);
debugfs_remove(hdev->debug_dir);
}
void hid_debug_init(void)
{
hid_debug_root = debugfs_create_dir("hid", NULL);
}
void hid_debug_exit(void)
{
debugfs_remove_recursive(hid_debug_root);
}
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