Documentation/ABI/testing/sysfs-bus-iio

   1 What:           /sys/bus/iio/devices/iio:deviceX
   2 KernelVersion:  2.6.35
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Hardware chip or device accessed by one communication port.
   6                 Corresponds to a grouping of sensor channels. X is the IIO
   7                 index of the device.
   8
   9 What:           /sys/bus/iio/devices/triggerX
  10 KernelVersion:  2.6.35
  11 Contact:        linux-iio@vger.kernel.org
  12 Description:
  13                 An event driven driver of data capture to an in kernel buffer.
  14                 May be provided by a device driver that also has an IIO device
  15                 based on hardware generated events (e.g. data ready) or
  16                 provided by a separate driver for other hardware (e.g.
  17                 periodic timer, GPIO or high resolution timer).
  18                 Contains trigger type specific elements. These do not
  19                 generalize well and hence are not documented in this file.
  20                 X is the IIO index of the trigger.
  21
  22 What:           /sys/bus/iio/devices/iio:deviceX/buffer
  23 KernelVersion:  2.6.35
  24 Contact:        linux-iio@vger.kernel.org
  25 Description:
  26                 Directory of attributes relating to the buffer for the device.
  27
  28 What:           /sys/bus/iio/devices/iio:deviceX/name
  29 KernelVersion:  2.6.35
  30 Contact:        linux-iio@vger.kernel.org
  31 Description:
  32                 Description of the physical chip / device for device X.
  33                 Typically a part number.
  34
  35 What:           /sys/bus/iio/devices/iio:deviceX/sampling_frequency
  36 What:           /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
  37 What:           /sys/bus/iio/devices/triggerX/sampling_frequency
  38 KernelVersion:  2.6.35
  39 Contact:        linux-iio@vger.kernel.org
  40 Description:
  41                 Some devices have internal clocks.  This parameter sets the
  42                 resulting sampling frequency.  In many devices this
  43                 parameter has an effect on input filters etc. rather than
  44                 simply controlling when the input is sampled.  As this
  45                 effects data ready triggers, hardware buffers and the sysfs
  46                 direct access interfaces, it may be found in any of the
  47                 relevant directories.  If it effects all of the above
  48                 then it is to be found in the base device directory.
  49
  50 What:           /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
  51 What:           /sys/.../iio:deviceX/buffer/sampling_frequency_available
  52 What:           /sys/bus/iio/devices/triggerX/sampling_frequency_available
  53 KernelVersion:  2.6.35
  54 Contact:        linux-iio@vger.kernel.org
  55 Description:
  56                 When the internal sampling clock can only take a small
  57                 discrete set of values, this file lists those available.
  58
  59 What:           /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
  60 KernelVersion:  2.6.38
  61 Contact:        linux-iio@vger.kernel.org
  62 Description:
  63                 Hardware dependent ADC oversampling. Controls the sampling ratio
  64                 of the digital filter if available.
  65
  66 What:           /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
  67 KernelVersion:  2.6.38
  68 Contact:        linux-iio@vger.kernel.org
  69 Description:
  70                 Hardware dependent values supported by the oversampling filter.
  71
  72 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
  73 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
  74 KernelVersion:  2.6.35
  75 Contact:        linux-iio@vger.kernel.org
  76 Description:
  77                 Raw (unscaled no bias removal etc.) voltage measurement from
  78                 channel Y. In special cases where the channel does not
  79                 correspond to externally available input one of the named
  80                 versions may be used. The number must always be specified and
  81                 unique to allow association with event codes. Units after
  82                 application of scale and offset are millivolts.
  83
  84 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
  85 KernelVersion:  2.6.35
  86 Contact:        linux-iio@vger.kernel.org
  87 Description:
  88                 Raw (unscaled) differential voltage measurement equivalent to
  89                 channel Y - channel Z where these channel numbers apply to the
  90                 physically equivalent inputs when non differential readings are
  91                 separately available. In differential only parts, then all that
  92                 is required is a consistent labeling.  Units after application
  93                 of scale and offset are millivolts.
  94
  95 What:           /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
  96 KernelVersion:  3.2
  97 Contact:        linux-iio@vger.kernel.org
  98 Description:
  99                 Raw capacitance measurement from channel Y. Units after
 100                 application of scale and offset are nanofarads.
 101
 102 What:           /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
 103 KernelVersion:  3.2
 104 Contact:        linux-iio@vger.kernel.org
 105 Description:
 106                 Raw differential capacitance measurement equivalent to
 107                 channel Y - channel Z where these channel numbers apply to the
 108                 physically equivalent inputs when non differential readings are
 109                 separately available. In differential only parts, then all that
 110                 is required is a consistent labeling.  Units after application
 111                 of scale and offset are nanofarads.
 112
 113 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_raw
 114 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
 115 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
 116 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
 117 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
 118 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
 119 KernelVersion:  2.6.35
 120 Contact:        linux-iio@vger.kernel.org
 121 Description:
 122                 Raw (unscaled no bias removal etc.) temperature measurement.
 123                 If an axis is specified it generally means that the temperature
 124                 sensor is associated with one part of a compound device (e.g.
 125                 a gyroscope axis). The ambient and object modifiers distinguish
 126                 between ambient (reference) and distant temperature for contact-
 127                 less measurements. Units after application of scale and offset
 128                 are milli degrees Celsius.
 129
 130 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_input
 131 KernelVersion:  2.6.38
 132 Contact:        linux-iio@vger.kernel.org
 133 Description:
 134                 Scaled temperature measurement in milli degrees Celsius.
 135
 136 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
 137 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
 138 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
 139 KernelVersion:  2.6.35
 140 Contact:        linux-iio@vger.kernel.org
 141 Description:
 142                 Acceleration in direction x, y or z (may be arbitrarily assigned
 143                 but should match other such assignments on device).
 144                 Has all of the equivalent parameters as per voltageY. Units
 145                 after application of scale and offset are m/s^2.
 146
 147 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
 148 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
 149 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
 150 KernelVersion:  2.6.35
 151 Contact:        linux-iio@vger.kernel.org
 152 Description:
 153                 Angular velocity about axis x, y or z (may be arbitrarily
 154                 assigned). Has all the equivalent parameters as per voltageY.
 155                 Units after application of scale and offset are radians per
 156                 second.
 157
 158 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
 159 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
 160 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
 161 KernelVersion:  2.6.35
 162 Contact:        linux-iio@vger.kernel.org
 163 Description:
 164                 Inclination raw reading about axis x, y or z (may be
 165                 arbitrarily assigned). Data converted by application of offset
 166                 and scale to degrees.
 167
 168 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
 169 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
 170 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
 171 KernelVersion:  2.6.35
 172 Contact:        linux-iio@vger.kernel.org
 173 Description:
 174                 Magnetic field along axis x, y or z (may be arbitrarily
 175                 assigned).  Data converted by application of offset
 176                 then scale to Gauss.
 177
 178 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
 179 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
 180 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
 181 KernelVersion:  2.6.36
 182 Contact:        linux-iio@vger.kernel.org
 183 Description:
 184                 Highest value since some reset condition.  These
 185                 attributes allow access to this and are otherwise
 186                 the direct equivalent of the <type>Y[_name]_raw attributes.
 187
 188 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
 189 KernelVersion:  2.6.36
 190 Contact:        linux-iio@vger.kernel.org
 191 Description:
 192                 A computed peak value based on the sum squared magnitude of
 193                 the underlying value in the specified directions.
 194
 195 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
 196 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
 197 KernelVersion:  3.8
 198 Contact:        linux-iio@vger.kernel.org
 199 Description:
 200                 Raw pressure measurement from channel Y. Units after
 201                 application of scale and offset are kilopascal.
 202
 203 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
 204 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_input
 205 KernelVersion:  3.8
 206 Contact:        linux-iio@vger.kernel.org
 207 Description:
 208                 Scaled pressure measurement from channel Y, in kilopascal.
 209
 210 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
 211 KernelVersion:  3.14
 212 Contact:        linux-iio@vger.kernel.org
 213 Description:
 214                 Raw humidity measurement of air. Units after application of
 215                 scale and offset are milli percent.
 216
 217 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
 218 KernelVersion:  3.14
 219 Contact:        linux-iio@vger.kernel.org
 220 Description:
 221                 Scaled humidity measurement in milli percent.
 222
 223 What:           /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
 224 KernelVersion:  3.5
 225 Contact:        linux-iio@vger.kernel.org
 226 Description:
 227                 Averaged raw measurement from channel X. The number of values
 228                 used for averaging is device specific. The converting rules for
 229                 normal raw values also applies to the averaged raw values.
 230
 231 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_offset
 232 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
 233 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
 234 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
 235 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
 236 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
 237 What:           /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
 238 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_offset
 239 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
 240 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
 241 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
 242 KernelVersion:  2.6.35
 243 Contact:        linux-iio@vger.kernel.org
 244 Description:
 245                 If known for a device, offset to be added to <type>[Y]_raw prior
 246                 to scaling by <type>[Y]_scale in order to obtain value in the
 247                 <type> units as specified in <type>[Y]_raw documentation.
 248                 Not present if the offset is always 0 or unknown. If Y or
 249                 axis <x|y|z> is not present, then the offset applies to all
 250                 in channels of <type>.
 251                 May be writable if a variable offset can be applied on the
 252                 device. Note that this is different to calibbias which
 253                 is for devices (or drivers) that apply offsets to compensate
 254                 for variation between different instances of the part, typically
 255                 adjusted by using some hardware supported calibration procedure.
 256                 Calibbias is applied internally, offset is applied in userspace
 257                 to the _raw output.
 258
 259 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
 260 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
 261 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
 262 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
 263 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
 264 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
 265 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale
 266 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
 267 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
 268 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_scale
 269 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
 270 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
 271 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
 272 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
 273 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
 274 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
 275 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
 276 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
 277 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
 278 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
 279 KernelVersion:  2.6.35
 280 Contact:        linux-iio@vger.kernel.org
 281 Description:
 282                 If known for a device, scale to be applied to <type>Y[_name]_raw
 283                 post addition of <type>[Y][_name]_offset in order to obtain the
 284                 measured value in <type> units as specified in
 285                 <type>[Y][_name]_raw documentation.  If shared across all in
 286                 channels then Y and <x|y|z> are not present and the value is
 287                 called <type>[Y][_name]_scale. The peak modifier means this
 288                 value is applied to <type>Y[_name]_peak_raw values.
 289
 290 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
 291 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
 292 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
 293 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
 294 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
 295 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
 296 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
 297 What:           /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
 298 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
 299 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
 300 KernelVersion:  2.6.35
 301 Contact:        linux-iio@vger.kernel.org
 302 Description:
 303                 Hardware applied calibration offset (assumed to fix production
 304                 inaccuracies).
 305
 306 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
 307 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
 308 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
 309 What            /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
 310 What            /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
 311 What            /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
 312 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
 313 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
 314 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
 315 what            /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
 316 what            /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
 317 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
 318 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
 319 KernelVersion:  2.6.35
 320 Contact:        linux-iio@vger.kernel.org
 321 Description:
 322                 Hardware applied calibration scale factor (assumed to fix
 323                 production inaccuracies).  If shared across all channels,
 324                 <type>_calibscale is used.
 325
 326 What:           /sys/bus/iio/devices/iio:deviceX/in_steps_calibheight
 327 KernelVersion:  3.19
 328 Contact:        linux-iio@vger.kernel.org
 329 Description:
 330                 Height of the user (in centimeters) used by some pedometers
 331                 to compute the stride length, distance, speed and activity
 332                 type.
 333
 334 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
 335 What:           /sys/.../iio:deviceX/in_voltageX_scale_available
 336 What:           /sys/.../iio:deviceX/in_voltage-voltage_scale_available
 337 What:           /sys/.../iio:deviceX/out_voltageX_scale_available
 338 What:           /sys/.../iio:deviceX/out_altvoltageX_scale_available
 339 What:           /sys/.../iio:deviceX/in_capacitance_scale_available
 340 What:           /sys/.../iio:deviceX/in_pressure_scale_available
 341 What:           /sys/.../iio:deviceX/in_pressureY_scale_available
 342 KernelVersion:  2.6.35
 343 Contact:        linux-iio@vger.kernel.org
 344 Description:
 345                 If a discrete set of scale values is available, they
 346                 are listed in this attribute.
 347
 348 What            /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
 349 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
 350 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
 351 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
 352 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
 353 KernelVersion:  2.6.35
 354 Contact:        linux-iio@vger.kernel.org
 355 Description:
 356                 Hardware applied gain factor. If shared across all channels,
 357                 <type>_hardwaregain is used.
 358
 359 What:           /sys/.../in_accel_filter_low_pass_3db_frequency
 360 What:           /sys/.../in_magn_filter_low_pass_3db_frequency
 361 What:           /sys/.../in_anglvel_filter_low_pass_3db_frequency
 362 KernelVersion:  3.2
 363 Contact:        linux-iio@vger.kernel.org
 364 Description:
 365                 If a known or controllable low pass filter is applied
 366                 to the underlying data channel, then this parameter
 367                 gives the 3dB frequency of the filter in Hz.
 368
 369 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
 370 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
 371 KernelVersion:  2.6.37
 372 Contact:        linux-iio@vger.kernel.org
 373 Description:
 374                 Raw (unscaled, no bias etc.) output voltage for
 375                 channel Y.  The number must always be specified and
 376                 unique if the output corresponds to a single channel.
 377                 While DAC like devices typically use out_voltage,
 378                 a continuous frequency generating device, such as
 379                 a DDS or PLL should use out_altvoltage.
 380
 381 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
 382 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
 383 KernelVersion:  2.6.37
 384 Contact:        linux-iio@vger.kernel.org
 385 Description:
 386                 Raw (unscaled, no bias etc.) output voltage for an aggregate of
 387                 channel Y, channel Z, etc.  This interface is available in cases
 388                 where a single output sets the value for multiple channels
 389                 simultaneously.
 390
 391 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
 392 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
 393 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
 394 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
 395 KernelVersion:  2.6.38
 396 Contact:        linux-iio@vger.kernel.org
 397 Description:
 398                 Specifies the output powerdown mode.
 399                 DAC output stage is disconnected from the amplifier and
 400                 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
 401                 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
 402                 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
 403                 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
 404                 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
 405                 three_state: left floating.
 406                 For a list of available output power down options read
 407                 outX_powerdown_mode_available. If Y is not present the
 408                 mode is shared across all outputs.
 409
 410 What:           /sys/.../iio:deviceX/out_votlageY_powerdown_mode_available
 411 What:           /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
 412 What:           /sys/.../iio:deviceX/out_altvotlageY_powerdown_mode_available
 413 What:           /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
 414 KernelVersion:  2.6.38
 415 Contact:        linux-iio@vger.kernel.org
 416 Description:
 417                 Lists all available output power down modes.
 418                 If Y is not present the mode is shared across all outputs.
 419
 420 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
 421 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
 422 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
 423 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
 424 KernelVersion:  2.6.38
 425 Contact:        linux-iio@vger.kernel.org
 426 Description:
 427                 Writing 1 causes output Y to enter the power down mode specified
 428                 by the corresponding outY_powerdown_mode. DAC output stage is
 429                 disconnected from the amplifier. Clearing returns to normal
 430                 operation. Y may be suppressed if all outputs are controlled
 431                 together.
 432
 433 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
 434 KernelVersion:  3.4.0
 435 Contact:        linux-iio@vger.kernel.org
 436 Description:
 437                 Output frequency for channel Y in Hz. The number must always be
 438                 specified and unique if the output corresponds to a single
 439                 channel.
 440
 441 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
 442 KernelVersion:  3.4.0
 443 Contact:        linux-iio@vger.kernel.org
 444 Description:
 445                 Phase in radians of one frequency/clock output Y
 446                 (out_altvoltageY) relative to another frequency/clock output
 447                 (out_altvoltageZ) of the device X. The number must always be
 448                 specified and unique if the output corresponds to a single
 449                 channel.
 450
 451 What:           /sys/bus/iio/devices/iio:deviceX/events
 452 KernelVersion:  2.6.35
 453 Contact:        linux-iio@vger.kernel.org
 454 Description:
 455                 Configuration of which hardware generated events are passed up
 456                 to user-space.
 457
 458 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
 459 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
 460 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
 461 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
 462 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
 463 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
 464 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
 465 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
 466 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
 467 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
 468 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
 469 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
 470 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
 471 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
 472 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
 473 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
 474 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
 475 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
 476 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
 477 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
 478 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
 479 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
 480 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
 481 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
 482 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
 483 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
 484 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
 485 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
 486 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
 487 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
 488 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
 489 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
 490 KernelVersion:  2.6.37
 491 Contact:        linux-iio@vger.kernel.org
 492 Description:
 493                 Event generated when channel passes a threshold in the specified
 494                 (_rising|_falling) direction. If the direction is not specified,
 495                 then either the device will report an event which ever direction
 496                 a single threshold value is passed in (e.g.
 497                 <type>[Y][_name]_<raw|input>_thresh_value) or
 498                 <type>[Y][_name]_<raw|input>_thresh_rising_value and
 499                 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
 500                 different values, but the device can only enable both thresholds
 501                 or neither.
 502                 Note the driver will assume the last p events requested are
 503                 to be enabled where p is how many it supports (which may vary
 504                 depending on the exact set requested. So if you want to be
 505                 sure you have set what you think you have, check the contents of
 506                 these attributes after everything is configured. Drivers may
 507                 have to buffer any parameters so that they are consistent when
 508                 a given event type is enabled at a future point (and not those for
 509                 whatever event was previously enabled).
 510
 511 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
 512 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
 513 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
 514 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
 515 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
 516 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
 517 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
 518 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
 519 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
 520 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
 521 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
 522 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
 523 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
 524 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
 525 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
 526 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
 527 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
 528 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
 529 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
 530 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
 531 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
 532 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
 533 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
 534 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
 535 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
 536 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
 537 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
 538 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
 539 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
 540 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
 541 What:           /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
 542 What:           /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
 543 KernelVersion:  2.6.37
 544 Contact:        linux-iio@vger.kernel.org
 545 Description:
 546                 Event generated when channel passes a threshold on the rate of
 547                 change (1st differential) in the specified (_rising|_falling)
 548                 direction. If the direction is not specified, then either the
 549                 device will report an event which ever direction a single
 550                 threshold value is passed in (e.g.
 551                 <type>[Y][_name]_<raw|input>_roc_value) or
 552                 <type>[Y][_name]_<raw|input>_roc_rising_value and
 553                 <type>[Y][_name]_<raw|input>_roc_falling_value may take
 554                 different values, but the device can only enable both rate of
 555                 change thresholds or neither.
 556                 Note the driver will assume the last p events requested are
 557                 to be enabled where p is however many it supports (which may
 558                 vary depending on the exact set requested. So if you want to be
 559                 sure you have set what you think you have, check the contents of
 560                 these attributes after everything is configured. Drivers may
 561                 have to buffer any parameters so that they are consistent when
 562                 a given event type is enabled a future point (and not those for
 563                 whatever event was previously enabled).
 564
 565 What:           /sys/.../events/in_accel_x_raw_thresh_rising_value
 566 What:           /sys/.../events/in_accel_x_raw_thresh_falling_value
 567 What:           /sys/.../events/in_accel_y_raw_thresh_rising_value
 568 What:           /sys/.../events/in_accel_y_raw_thresh_falling_value
 569 What:           /sys/.../events/in_accel_z_raw_thresh_rising_value
 570 What:           /sys/.../events/in_accel_z_raw_thresh_falling_value
 571 What:           /sys/.../events/in_anglvel_x_raw_thresh_rising_value
 572 What:           /sys/.../events/in_anglvel_x_raw_thresh_falling_value
 573 What:           /sys/.../events/in_anglvel_y_raw_thresh_rising_value
 574 What:           /sys/.../events/in_anglvel_y_raw_thresh_falling_value
 575 What:           /sys/.../events/in_anglvel_z_raw_thresh_rising_value
 576 What:           /sys/.../events/in_anglvel_z_raw_thresh_falling_value
 577 What:           /sys/.../events/in_magn_x_raw_thresh_rising_value
 578 What:           /sys/.../events/in_magn_x_raw_thresh_falling_value
 579 What:           /sys/.../events/in_magn_y_raw_thresh_rising_value
 580 What:           /sys/.../events/in_magn_y_raw_thresh_falling_value
 581 What:           /sys/.../events/in_magn_z_raw_thresh_rising_value
 582 What:           /sys/.../events/in_magn_z_raw_thresh_falling_value
 583 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
 584 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
 585 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
 586 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
 587 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
 588 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
 589 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
 590 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
 591 What:           /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
 592 What:           /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
 593 What:           /sys/.../events/in_voltageY_raw_thresh_rising_value
 594 What:           /sys/.../events/in_voltageY_raw_thresh_falling_value
 595 What:           /sys/.../events/in_tempY_raw_thresh_rising_value
 596 What:           /sys/.../events/in_tempY_raw_thresh_falling_value
 597 What:           /sys/.../events/in_illuminance0_thresh_falling_value
 598 what:           /sys/.../events/in_illuminance0_thresh_rising_value
 599 what:           /sys/.../events/in_proximity0_thresh_falling_value
 600 what:           /sys/.../events/in_proximity0_thresh_rising_value
 601 KernelVersion:  2.6.37
 602 Contact:        linux-iio@vger.kernel.org
 603 Description:
 604                 Specifies the value of threshold that the device is comparing
 605                 against for the events enabled by
 606                 <type>Y[_name]_thresh[_rising|falling]_en.
 607                 If separate attributes exist for the two directions, but
 608                 direction is not specified for this attribute, then a single
 609                 threshold value applies to both directions.
 610                 The raw or input element of the name indicates whether the
 611                 value is in raw device units or in processed units (as _raw
 612                 and _input do on sysfs direct channel read attributes).
 613
 614 What:           /sys/.../events/in_accel_x_thresh_rising_hysteresis
 615 What:           /sys/.../events/in_accel_x_thresh_falling_hysteresis
 616 What:           /sys/.../events/in_accel_x_thresh_either_hysteresis
 617 What:           /sys/.../events/in_accel_y_thresh_rising_hysteresis
 618 What:           /sys/.../events/in_accel_y_thresh_falling_hysteresis
 619 What:           /sys/.../events/in_accel_y_thresh_either_hysteresis
 620 What:           /sys/.../events/in_accel_z_thresh_rising_hysteresis
 621 What:           /sys/.../events/in_accel_z_thresh_falling_hysteresis
 622 What:           /sys/.../events/in_accel_z_thresh_either_hysteresis
 623 What:           /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
 624 What:           /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
 625 What:           /sys/.../events/in_anglvel_x_thresh_either_hysteresis
 626 What:           /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
 627 What:           /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
 628 What:           /sys/.../events/in_anglvel_y_thresh_either_hysteresis
 629 What:           /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
 630 What:           /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
 631 What:           /sys/.../events/in_anglvel_z_thresh_either_hysteresis
 632 What:           /sys/.../events/in_magn_x_thresh_rising_hysteresis
 633 What:           /sys/.../events/in_magn_x_thresh_falling_hysteresis
 634 What:           /sys/.../events/in_magn_x_thresh_either_hysteresis
 635 What:           /sys/.../events/in_magn_y_thresh_rising_hysteresis
 636 What:           /sys/.../events/in_magn_y_thresh_falling_hysteresis
 637 What:           /sys/.../events/in_magn_y_thresh_either_hysteresis
 638 What:           /sys/.../events/in_magn_z_thresh_rising_hysteresis
 639 What:           /sys/.../events/in_magn_z_thresh_falling_hysteresis
 640 What:           /sys/.../events/in_magn_z_thresh_either_hysteresis
 641 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
 642 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
 643 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
 644 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
 645 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
 646 What:           /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
 647 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
 648 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
 649 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
 650 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
 651 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
 652 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
 653 What:           /sys/.../events/in_voltageY_thresh_rising_hysteresis
 654 What:           /sys/.../events/in_voltageY_thresh_falling_hysteresis
 655 What:           /sys/.../events/in_voltageY_thresh_either_hysteresis
 656 What:           /sys/.../events/in_tempY_thresh_rising_hysteresis
 657 What:           /sys/.../events/in_tempY_thresh_falling_hysteresis
 658 What:           /sys/.../events/in_tempY_thresh_either_hysteresis
 659 What:           /sys/.../events/in_illuminance0_thresh_falling_hysteresis
 660 what:           /sys/.../events/in_illuminance0_thresh_rising_hysteresis
 661 what:           /sys/.../events/in_illuminance0_thresh_either_hysteresis
 662 what:           /sys/.../events/in_proximity0_thresh_falling_hysteresis
 663 what:           /sys/.../events/in_proximity0_thresh_rising_hysteresis
 664 what:           /sys/.../events/in_proximity0_thresh_either_hysteresis
 665 KernelVersion:  3.13
 666 Contact:        linux-iio@vger.kernel.org
 667 Description:
 668                 Specifies the hysteresis of threshold that the device is comparing
 669                 against for the events enabled by
 670                 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
 671                 If separate attributes exist for the two directions, but
 672                 direction is not specified for this attribute, then a single
 673                 hysteresis value applies to both directions.
 674                 For falling events the hysteresis is added to the _value attribute for
 675                 this event to get the upper threshold for when the event goes back to
 676                 normal, for rising events the hysteresis is subtracted from the _value
 677                 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
 678                 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
 679                 will get activated once in_voltage0_raw goes above 1200 and will become
 680                 deactived again once the value falls below 1150.
 681
 682 What:           /sys/.../events/in_accel_x_raw_roc_rising_value
 683 What:           /sys/.../events/in_accel_x_raw_roc_falling_value
 684 What:           /sys/.../events/in_accel_y_raw_roc_rising_value
 685 What:           /sys/.../events/in_accel_y_raw_roc_falling_value
 686 What:           /sys/.../events/in_accel_z_raw_roc_rising_value
 687 What:           /sys/.../events/in_accel_z_raw_roc_falling_value
 688 What:           /sys/.../events/in_anglvel_x_raw_roc_rising_value
 689 What:           /sys/.../events/in_anglvel_x_raw_roc_falling_value
 690 What:           /sys/.../events/in_anglvel_y_raw_roc_rising_value
 691 What:           /sys/.../events/in_anglvel_y_raw_roc_falling_value
 692 What:           /sys/.../events/in_anglvel_z_raw_roc_rising_value
 693 What:           /sys/.../events/in_anglvel_z_raw_roc_falling_value
 694 What:           /sys/.../events/in_magn_x_raw_roc_rising_value
 695 What:           /sys/.../events/in_magn_x_raw_roc_falling_value
 696 What:           /sys/.../events/in_magn_y_raw_roc_rising_value
 697 What:           /sys/.../events/in_magn_y_raw_roc_falling_value
 698 What:           /sys/.../events/in_magn_z_raw_roc_rising_value
 699 What:           /sys/.../events/in_magn_z_raw_roc_falling_value
 700 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
 701 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
 702 What:           /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
 703 What:           /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
 704 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
 705 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
 706 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
 707 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
 708 What:           /sys/.../events/in_voltageY_supply_raw_roc_rising_value
 709 What:           /sys/.../events/in_voltageY_supply_raw_roc_falling_value
 710 What:           /sys/.../events/in_voltageY_raw_roc_rising_value
 711 What:           /sys/.../events/in_voltageY_raw_roc_falling_value
 712 What:           /sys/.../events/in_tempY_raw_roc_rising_value
 713 What:           /sys/.../events/in_tempY_raw_roc_falling_value
 714 KernelVersion:  2.6.37
 715 Contact:        linux-iio@vger.kernel.org
 716 Description:
 717                 Specifies the value of rate of change threshold that the
 718                 device is comparing against for the events enabled by
 719                 <type>[Y][_name]_roc[_rising|falling]_en.
 720                 If separate attributes exist for the two directions,
 721                 but direction is not specified for this attribute,
 722                 then a single threshold value applies to both directions.
 723                 The raw or input element of the name indicates whether the
 724                 value is in raw device units or in processed units (as _raw
 725                 and _input do on sysfs direct channel read attributes).
 726
 727 What:           /sys/.../events/in_accel_x_thresh_rising_period
 728 What:           /sys/.../events/in_accel_x_thresh_falling_period
 729 hat:            /sys/.../events/in_accel_x_roc_rising_period
 730 What:           /sys/.../events/in_accel_x_roc_falling_period
 731 What:           /sys/.../events/in_accel_y_thresh_rising_period
 732 What:           /sys/.../events/in_accel_y_thresh_falling_period
 733 What:           /sys/.../events/in_accel_y_roc_rising_period
 734 What:           /sys/.../events/in_accel_y_roc_falling_period
 735 What:           /sys/.../events/in_accel_z_thresh_rising_period
 736 What:           /sys/.../events/in_accel_z_thresh_falling_period
 737 What:           /sys/.../events/in_accel_z_roc_rising_period
 738 What:           /sys/.../events/in_accel_z_roc_falling_period
 739 What:           /sys/.../events/in_anglvel_x_thresh_rising_period
 740 What:           /sys/.../events/in_anglvel_x_thresh_falling_period
 741 What:           /sys/.../events/in_anglvel_x_roc_rising_period
 742 What:           /sys/.../events/in_anglvel_x_roc_falling_period
 743 What:           /sys/.../events/in_anglvel_y_thresh_rising_period
 744 What:           /sys/.../events/in_anglvel_y_thresh_falling_period
 745 What:           /sys/.../events/in_anglvel_y_roc_rising_period
 746 What:           /sys/.../events/in_anglvel_y_roc_falling_period
 747 What:           /sys/.../events/in_anglvel_z_thresh_rising_period
 748 What:           /sys/.../events/in_anglvel_z_thresh_falling_period
 749 What:           /sys/.../events/in_anglvel_z_roc_rising_period
 750 What:           /sys/.../events/in_anglvel_z_roc_falling_period
 751 What:           /sys/.../events/in_magn_x_thresh_rising_period
 752 What:           /sys/.../events/in_magn_x_thresh_falling_period
 753 What:           /sys/.../events/in_magn_x_roc_rising_period
 754 What:           /sys/.../events/in_magn_x_roc_falling_period
 755 What:           /sys/.../events/in_magn_y_thresh_rising_period
 756 What:           /sys/.../events/in_magn_y_thresh_falling_period
 757 What:           /sys/.../events/in_magn_y_roc_rising_period
 758 What:           /sys/.../events/in_magn_y_roc_falling_period
 759 What:           /sys/.../events/in_magn_z_thresh_rising_period
 760 What:           /sys/.../events/in_magn_z_thresh_falling_period
 761 What:           /sys/.../events/in_magn_z_roc_rising_period
 762 What:           /sys/.../events/in_magn_z_roc_falling_period
 763 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
 764 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
 765 What:           /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
 766 What:           /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
 767 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_period
 768 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_period
 769 What:           /sys/.../events/in_rot_from_north_true_roc_rising_period
 770 What:           /sys/.../events/in_rot_from_north_true_roc_falling_period
 771 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
 772 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
 773 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
 774 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
 775 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
 776 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
 777 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
 778 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
 779 What:           /sys/.../events/in_voltageY_supply_thresh_rising_period
 780 What:           /sys/.../events/in_voltageY_supply_thresh_falling_period
 781 What:           /sys/.../events/in_voltageY_supply_roc_rising_period
 782 What:           /sys/.../events/in_voltageY_supply_roc_falling_period
 783 What:           /sys/.../events/in_voltageY_thresh_rising_period
 784 What:           /sys/.../events/in_voltageY_thresh_falling_period
 785 What:           /sys/.../events/in_voltageY_roc_rising_period
 786 What:           /sys/.../events/in_voltageY_roc_falling_period
 787 What:           /sys/.../events/in_tempY_thresh_rising_period
 788 What:           /sys/.../events/in_tempY_thresh_falling_period
 789 What:           /sys/.../events/in_tempY_roc_rising_period
 790 What:           /sys/.../events/in_tempY_roc_falling_period
 791 What:           /sys/.../events/in_accel_x&y&z_mag_falling_period
 792 What:           /sys/.../events/in_intensity0_thresh_period
 793 What:           /sys/.../events/in_proximity0_thresh_period
 794 KernelVersion:  2.6.37
 795 Contact:        linux-iio@vger.kernel.org
 796 Description:
 797                 Period of time (in seconds) for which the condition must be
 798                 met before an event is generated. If direction is not
 799                 specified then this period applies to both directions.
 800
 801 What:           /sys/.../events/in_activity_still_thresh_rising_en
 802 What:           /sys/.../events/in_activity_still_thresh_falling_en
 803 What:           /sys/.../events/in_activity_walking_thresh_rising_en
 804 What:           /sys/.../events/in_activity_walking_thresh_falling_en
 805 What:           /sys/.../events/in_activity_jogging_thresh_rising_en
 806 What:           /sys/.../events/in_activity_jogging_thresh_falling_en
 807 What:           /sys/.../events/in_activity_running_thresh_rising_en
 808 What:           /sys/.../events/in_activity_running_thresh_falling_en
 809 KernelVersion:  3.19
 810 Contact:        linux-iio@vger.kernel.org
 811 Description:
 812                 Enables or disables activitity events. Depending on direction
 813                 an event is generated when sensor ENTERS or LEAVES a given state.
 814
 815 What:           /sys/.../events/in_activity_still_thresh_rising_value
 816 What:           /sys/.../events/in_activity_still_thresh_falling_value
 817 What:           /sys/.../events/in_activity_walking_thresh_rising_value
 818 What:           /sys/.../events/in_activity_walking_thresh_falling_value
 819 What:           /sys/.../events/in_activity_jogging_thresh_rising_value
 820 What:           /sys/.../events/in_activity_jogging_thresh_falling_value
 821 What:           /sys/.../events/in_activity_running_thresh_rising_value
 822 What:           /sys/.../events/in_activity_running_thresh_falling_value
 823 KernelVersion:  3.19
 824 Contact:        linux-iio@vger.kernel.org
 825 Description:
 826                 Confidence value (in units as percentage) to be used
 827                 for deciding when an event should be generated. E.g for
 828                 running: If the confidence value reported by the sensor
 829                 is greater than in_activity_running_thresh_rising_value
 830                 then the sensor ENTERS running state. Conversely, if the
 831                 confidence value reported by the sensor is lower than
 832                 in_activity_running_thresh_falling_value then the sensor
 833                 is LEAVING running state.
 834
 835 What:           /sys/.../iio:deviceX/events/in_accel_mag_en
 836 What:           /sys/.../iio:deviceX/events/in_accel_mag_rising_en
 837 What:           /sys/.../iio:deviceX/events/in_accel_mag_falling_en
 838 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_en
 839 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
 840 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
 841 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_en
 842 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
 843 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
 844 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_en
 845 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
 846 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
 847 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
 848 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
 849 KernelVersion:  2.6.37
 850 Contact:        linux-iio@vger.kernel.org
 851 Description:
 852                 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
 853                 magnitude of the channel is compared to the threshold, not its
 854                 signed value.
 855
 856 What:           /sys/.../events/in_accel_raw_mag_value
 857 What:           /sys/.../events/in_accel_x_raw_mag_rising_value
 858 What:           /sys/.../events/in_accel_y_raw_mag_rising_value
 859 What:           /sys/.../events/in_accel_z_raw_mag_rising_value
 860 KernelVersion:  2.6.37
 861 Contact:        linux-iio@vger.kernel.org
 862 Description:
 863                 The value to which the magnitude of the channel is compared. If
 864                 number or direction is not specified, applies to all channels of
 865                 this type.
 866
 867 What:           /sys/.../events/in_steps_instance_en
 868 KernelVersion:  3.19
 869 Contact:        linux-iio@vger.kernel.org
 870 Description:
 871                 Enables or disables step detection. Each time the user takes a step an
 872                 event of this type will be generated.
 873
 874 What:           /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
 875 KernelVersion:  2.6.35
 876 Contact:        linux-iio@vger.kernel.org
 877 Description:
 878                 The name of the trigger source being used, as per string given
 879                 in /sys/class/iio/triggerY/name.
 880
 881 What:           /sys/bus/iio/devices/iio:deviceX/buffer/length
 882 KernelVersion:  2.6.35
 883 Contact:        linux-iio@vger.kernel.org
 884 Description:
 885                 Number of scans contained by the buffer.
 886
 887 What:           /sys/bus/iio/devices/iio:deviceX/buffer/bytes_per_datum
 888 KernelVersion:  2.6.37
 889 Contact:        linux-iio@vger.kernel.org
 890 Description:
 891                 Bytes per scan.  Due to alignment fun, the scan may be larger
 892                 than implied directly by the scan_element parameters.
 893
 894 What:           /sys/bus/iio/devices/iio:deviceX/buffer/enable
 895 KernelVersion:  2.6.35
 896 Contact:        linux-iio@vger.kernel.org
 897 Description:
 898                 Actually start the buffer capture up.  Will start trigger
 899                 if first device and appropriate.
 900
 901 What:           /sys/bus/iio/devices/iio:deviceX/scan_elements
 902 KernelVersion:  2.6.37
 903 Contact:        linux-iio@vger.kernel.org
 904 Description:
 905                 Directory containing interfaces for elements that will be
 906                 captured for a single triggered sample set in the buffer.
 907
 908 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_en
 909 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_en
 910 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_en
 911 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
 912 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
 913 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
 914 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_en
 915 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_en
 916 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_en
 917 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
 918 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
 919 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
 920 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
 921 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_en
 922 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
 923 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_en
 924 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
 925 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_en
 926 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_en
 927 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_en
 928 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_en
 929 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
 930 KernelVersion:  2.6.37
 931 Contact:        linux-iio@vger.kernel.org
 932 Description:
 933                 Scan element control for triggered data capture.
 934
 935 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type
 936 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_type
 937 What:           /sys/.../iio:deviceX/scan_elements/in_magn_type
 938 What:           /sys/.../iio:deviceX/scan_elements/in_incli_type
 939 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_type
 940 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_type
 941 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
 942 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_type
 943 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_type
 944 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_type
 945 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
 946 KernelVersion:  2.6.37
 947 Contact:        linux-iio@vger.kernel.org
 948 Description:
 949                 Description of the scan element data storage within the buffer
 950                 and hence the form in which it is read from user-space.
 951                 Form is [be|le]:[s|u]bits/storagebits[>>shift].
 952                 be or le specifies big or little endian. s or u specifies if
 953                 signed (2's complement) or unsigned. bits is the number of bits
 954                 of data and storagebits is the space (after padding) that it
 955                 occupies in the buffer. shift if specified, is the shift that
 956                 needs to be applied prior to masking out unused bits. Some
 957                 devices put their data in the middle of the transferred elements
 958                 with additional information on both sides.  Note that some
 959                 devices will have additional information in the unused bits
 960                 so to get a clean value, the bits value must be used to mask
 961                 the buffer output value appropriately.  The storagebits value
 962                 also specifies the data alignment.  So s48/64>>2 will be a
 963                 signed 48 bit integer stored in a 64 bit location aligned to
 964                 a 64 bit boundary. To obtain the clean value, shift right 2
 965                 and apply a mask to zero the top 16 bits of the result.
 966                 For other storage combinations this attribute will be extended
 967                 appropriately.
 968
 969 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type_available
 970 KernelVersion:  2.6.37
 971 Contact:        linux-iio@vger.kernel.org
 972 Description:
 973                 If the type parameter can take one of a small set of values,
 974                 this attribute lists them.
 975
 976 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_index
 977 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
 978 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_index
 979 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_index
 980 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_index
 981 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
 982 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
 983 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
 984 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_index
 985 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_index
 986 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_index
 987 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
 988 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
 989 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
 990 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
 991 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_index
 992 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_index
 993 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_index
 994 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_index
 995 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_index
 996 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
 997 KernelVersion:  2.6.37
 998 Contact:        linux-iio@vger.kernel.org
 999 Description:
1000                 A single positive integer specifying the position of this
1001                 scan element in the buffer. Note these are not dependent on
1002                 what is enabled and may not be contiguous. Thus for user-space
1003                 to establish the full layout these must be used in conjunction
1004                 with all _en attributes to establish which channels are present,
1005                 and the relevant _type attributes to establish the data storage
1006                 format.
1007
1008 What:           /sys/.../iio:deviceX/in_activity_still_input
1009 What:           /sys/.../iio:deviceX/in_activity_walking_input
1010 What:           /sys/.../iio:deviceX/in_activity_jogging_input
1011 What:           /sys/.../iio:deviceX/in_activity_running_input
1012 KernelVersion:  3.19
1013 Contact:        linux-iio@vger.kernel.org
1014 Description:
1015                 This attribute is used to read the confidence for an activity
1016                 expressed in units as percentage.
1017
1018 What:           /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1019 KernelVersion:  2.6.38
1020 Contact:        linux-iio@vger.kernel.org
1021 Description:
1022                 This attribute is used to read the amount of quadrature error
1023                 present in the device at a given time.
1024
1025 What:           /sys/.../iio:deviceX/in_accelX_power_mode
1026 KernelVersion:  3.11
1027 Contact:        linux-iio@vger.kernel.org
1028 Description:
1029                 Specifies the chip power mode.
1030                 low_noise: reduce noise level from ADC,
1031                 low_power: enable low current consumption.
1032                 For a list of available output power modes read
1033                 in_accel_power_mode_available.
1034
1035 What:           /sys/bus/iio/devices/iio:deviceX/store_eeprom
1036 KernelVersion:  3.4.0
1037 Contact:        linux-iio@vger.kernel.org
1038 Description:
1039                 Writing '1' stores the current device configuration into
1040                 on-chip EEPROM. After power-up or chip reset the device will
1041                 automatically load the saved configuration.
1042
1043 What:           /sys/.../iio:deviceX/in_proximity_raw
1044 What:           /sys/.../iio:deviceX/in_proximity_input
1045 What:           /sys/.../iio:deviceX/in_proximityY_raw
1046 KernelVersion:  3.4
1047 Contact:        linux-iio@vger.kernel.org
1048 Description:
1049                 Proximity measurement indicating that some
1050                 object is near the sensor, usually be observing
1051                 reflectivity of infrared or ultrasound emitted.
1052                 Often these sensors are unit less and as such conversion
1053                 to SI units is not possible.  Where it is, the units should
1054                 be meters.
1055
1056 What:           /sys/.../iio:deviceX/in_illuminanceY_input
1057 What:           /sys/.../iio:deviceX/in_illuminanceY_raw
1058 What:           /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1059 KernelVersion:  3.4
1060 Contact:        linux-iio@vger.kernel.org
1061 Description:
1062                 Illuminance measurement, units after application of scale
1063                 and offset are lux.
1064
1065 What:           /sys/.../iio:deviceX/in_intensityY_raw
1066 What:           /sys/.../iio:deviceX/in_intensityY_ir_raw
1067 What:           /sys/.../iio:deviceX/in_intensityY_both_raw
1068 KernelVersion:  3.4
1069 Contact:        linux-iio@vger.kernel.org
1070 Description:
1071                 Unit-less light intensity. Modifiers both and ir indicate
1072                 that measurements contains visible and infrared light
1073                 components or just infrared light, respectively.
1074
1075 What:           /sys/.../iio:deviceX/in_intensity_red_integration_time
1076 What:           /sys/.../iio:deviceX/in_intensity_green_integration_time
1077 What:           /sys/.../iio:deviceX/in_intensity_blue_integration_time
1078 What:           /sys/.../iio:deviceX/in_intensity_clear_integration_time
1079 What:           /sys/.../iio:deviceX/in_illuminance_integration_time
1080 KernelVersion:  3.12
1081 Contact:        linux-iio@vger.kernel.org
1082 Description:
1083                 This attribute is used to get/set the integration time in
1084                 seconds.
1085
1086 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1087 KernelVersion:  3.15
1088 Contact:        linux-iio@vger.kernel.org
1089 Description:
1090                 Raw value of quaternion components using a format
1091                 x y z w. Here x, y, and z component represents the axis about
1092                 which a rotation will occur and w component represents the
1093                 amount of rotation.
1094
1095 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1096 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1097 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1098 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1099 KernelVersion:  3.15
1100 Contact:        linux-iio@vger.kernel.org
1101 Description:
1102                 Raw value of rotation from true/magnetic north measured with
1103                 or without compensation from tilt sensors.
1104
1105 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1106 KernelVersion:  3.18
1107 Contact:        linux-iio@vger.kernel.org
1108 Description:
1109                 Raw current measurement from channel X. Units are in milliamps
1110                 after application of scale and offset. If no offset or scale is
1111                 present, output should be considered as processed with the
1112                 unit in milliamps.
1113
1114 What:           /sys/.../iio:deviceX/in_steps_en
1115 KernelVersion:  3.19
1116 Contact:        linux-iio@vger.kernel.org
1117 Description:
1118                 Activates the step counter. After activation, the number of steps
1119                 taken by the user will be counted in hardware and exported through
1120                 in_steps_input.
1121
1122 What:           /sys/.../iio:deviceX/in_steps_input
1123 KernelVersion:  3.19
1124 Contact:        linux-iio@vger.kernel.org
1125 Description:
1126                 This attribute is used to read the number of steps taken by the user
1127                 since the last reboot while activated.