kernel/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_currentY_raw
  96 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
  97 KernelVersion:  3.17
  98 Contact:        linux-iio@vger.kernel.org
  99 Description:
 100                 Raw (unscaled no bias removal etc.) current measurement from
 101                 channel Y. In special cases where the channel does not
 102                 correspond to externally available input one of the named
 103                 versions may be used. The number must always be specified and
 104                 unique to allow association with event codes. Units after
 105                 application of scale and offset are milliamps.
 106
 107 What:           /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
 108 KernelVersion:  3.2
 109 Contact:        linux-iio@vger.kernel.org
 110 Description:
 111                 Raw capacitance measurement from channel Y. Units after
 112                 application of scale and offset are nanofarads.
 113
 114 What:           /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
 115 KernelVersion:  3.2
 116 Contact:        linux-iio@vger.kernel.org
 117 Description:
 118                 Raw differential capacitance measurement equivalent to
 119                 channel Y - channel Z where these channel numbers apply to the
 120                 physically equivalent inputs when non differential readings are
 121                 separately available. In differential only parts, then all that
 122                 is required is a consistent labeling.  Units after application
 123                 of scale and offset are nanofarads.
 124
 125 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_raw
 126 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
 127 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
 128 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
 129 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
 130 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
 131 KernelVersion:  2.6.35
 132 Contact:        linux-iio@vger.kernel.org
 133 Description:
 134                 Raw (unscaled no bias removal etc.) temperature measurement.
 135                 If an axis is specified it generally means that the temperature
 136                 sensor is associated with one part of a compound device (e.g.
 137                 a gyroscope axis). The ambient and object modifiers distinguish
 138                 between ambient (reference) and distant temperature for contact-
 139                 less measurements. Units after application of scale and offset
 140                 are milli degrees Celsius.
 141
 142 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_input
 143 KernelVersion:  2.6.38
 144 Contact:        linux-iio@vger.kernel.org
 145 Description:
 146                 Scaled temperature measurement in milli degrees Celsius.
 147
 148 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
 149 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
 150 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
 151 KernelVersion:  2.6.35
 152 Contact:        linux-iio@vger.kernel.org
 153 Description:
 154                 Acceleration in direction x, y or z (may be arbitrarily assigned
 155                 but should match other such assignments on device).
 156                 Has all of the equivalent parameters as per voltageY. Units
 157                 after application of scale and offset are m/s^2.
 158
 159 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
 160 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
 161 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
 162 KernelVersion:  2.6.35
 163 Contact:        linux-iio@vger.kernel.org
 164 Description:
 165                 Angular velocity about axis x, y or z (may be arbitrarily
 166                 assigned). Has all the equivalent parameters as per voltageY.
 167                 Units after application of scale and offset are radians per
 168                 second.
 169
 170 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
 171 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
 172 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
 173 KernelVersion:  2.6.35
 174 Contact:        linux-iio@vger.kernel.org
 175 Description:
 176                 Inclination raw reading about axis x, y or z (may be
 177                 arbitrarily assigned). Data converted by application of offset
 178                 and scale to degrees.
 179
 180 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
 181 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
 182 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
 183 KernelVersion:  2.6.35
 184 Contact:        linux-iio@vger.kernel.org
 185 Description:
 186                 Magnetic field along axis x, y or z (may be arbitrarily
 187                 assigned).  Data converted by application of offset
 188                 then scale to Gauss.
 189
 190 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
 191 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
 192 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
 193 KernelVersion:  2.6.36
 194 Contact:        linux-iio@vger.kernel.org
 195 Description:
 196                 Highest value since some reset condition.  These
 197                 attributes allow access to this and are otherwise
 198                 the direct equivalent of the <type>Y[_name]_raw attributes.
 199
 200 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
 201 KernelVersion:  2.6.36
 202 Contact:        linux-iio@vger.kernel.org
 203 Description:
 204                 A computed peak value based on the sum squared magnitude of
 205                 the underlying value in the specified directions.
 206
 207 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
 208 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
 209 KernelVersion:  3.8
 210 Contact:        linux-iio@vger.kernel.org
 211 Description:
 212                 Raw pressure measurement from channel Y. Units after
 213                 application of scale and offset are kilopascal.
 214
 215 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
 216 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_input
 217 KernelVersion:  3.8
 218 Contact:        linux-iio@vger.kernel.org
 219 Description:
 220                 Scaled pressure measurement from channel Y, in kilopascal.
 221
 222 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
 223 KernelVersion:  3.14
 224 Contact:        linux-iio@vger.kernel.org
 225 Description:
 226                 Raw humidity measurement of air. Units after application of
 227                 scale and offset are milli percent.
 228
 229 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
 230 KernelVersion:  3.14
 231 Contact:        linux-iio@vger.kernel.org
 232 Description:
 233                 Scaled humidity measurement in milli percent.
 234
 235 What:           /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
 236 KernelVersion:  3.5
 237 Contact:        linux-iio@vger.kernel.org
 238 Description:
 239                 Averaged raw measurement from channel X. The number of values
 240                 used for averaging is device specific. The converting rules for
 241                 normal raw values also applies to the averaged raw values.
 242
 243 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_offset
 244 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
 245 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
 246 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
 247 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
 248 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
 249 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
 250 What:           /sys/bus/iio/devices/iio:deviceX/in_current_offset
 251 What:           /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
 252 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_offset
 253 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
 254 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
 255 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
 256 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_offset
 257 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_offset
 258 KernelVersion:  2.6.35
 259 Contact:        linux-iio@vger.kernel.org
 260 Description:
 261                 If known for a device, offset to be added to <type>[Y]_raw prior
 262                 to scaling by <type>[Y]_scale in order to obtain value in the
 263                 <type> units as specified in <type>[Y]_raw documentation.
 264                 Not present if the offset is always 0 or unknown. If Y or
 265                 axis <x|y|z> is not present, then the offset applies to all
 266                 in channels of <type>.
 267                 May be writable if a variable offset can be applied on the
 268                 device. Note that this is different to calibbias which
 269                 is for devices (or drivers) that apply offsets to compensate
 270                 for variation between different instances of the part, typically
 271                 adjusted by using some hardware supported calibration procedure.
 272                 Calibbias is applied internally, offset is applied in userspace
 273                 to the _raw output.
 274
 275 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
 276 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
 277 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
 278 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
 279 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
 280 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
 281 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
 282 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
 283 What:           /sys/bus/iio/devices/iio:deviceX/in_current_scale
 284 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale
 285 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
 286 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
 287 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_scale
 288 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_scale
 289 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_scale
 290 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
 291 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
 292 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
 293 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
 294 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
 295 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
 296 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
 297 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
 298 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
 299 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
 300 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
 301 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
 302 KernelVersion:  2.6.35
 303 Contact:        linux-iio@vger.kernel.org
 304 Description:
 305                 If known for a device, scale to be applied to <type>Y[_name]_raw
 306                 post addition of <type>[Y][_name]_offset in order to obtain the
 307                 measured value in <type> units as specified in
 308                 <type>[Y][_name]_raw documentation.  If shared across all in
 309                 channels then Y and <x|y|z> are not present and the value is
 310                 called <type>[Y][_name]_scale. The peak modifier means this
 311                 value is applied to <type>Y[_name]_peak_raw values.
 312
 313 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
 314 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
 315 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
 316 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
 317 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
 318 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
 319 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
 320 What:           /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
 321 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
 322 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
 323 KernelVersion:  2.6.35
 324 Contact:        linux-iio@vger.kernel.org
 325 Description:
 326                 Hardware applied calibration offset (assumed to fix production
 327                 inaccuracies).
 328
 329 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
 330 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
 331 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
 332 What            /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
 333 What            /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
 334 What            /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
 335 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
 336 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
 337 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
 338 what            /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
 339 what            /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
 340 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
 341 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
 342 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
 343 KernelVersion:  2.6.35
 344 Contact:        linux-iio@vger.kernel.org
 345 Description:
 346                 Hardware applied calibration scale factor (assumed to fix
 347                 production inaccuracies).  If shared across all channels,
 348                 <type>_calibscale is used.
 349
 350 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
 351 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
 352 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
 353 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
 354 KernelVersion:  4.0
 355 Contact:        linux-iio@vger.kernel.org
 356 Description:
 357                 Gender of the user (e.g.: male, female) used by some pedometers
 358                 to compute the stride length, distance, speed and activity
 359                 type.
 360
 361 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
 362 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
 363 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
 364 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
 365 KernelVersion:  4.0
 366 Contact:        linux-iio@vger.kernel.org
 367 Description:
 368                 Lists all available gender values (e.g.: male, female).
 369
 370 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
 371 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
 372 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
 373 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
 374 KernelVersion:  3.19
 375 Contact:        linux-iio@vger.kernel.org
 376 Description:
 377                 Height of the user (in meters) used by some pedometers
 378                 to compute the stride length, distance, speed and activity
 379                 type.
 380
 381 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
 382 KernelVersion:  4.0
 383 Contact:        linux-iio@vger.kernel.org
 384 Description:
 385                 Weight of the user (in kg). It is needed by some pedometers
 386                 to compute the calories burnt by the user.
 387
 388 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
 389 What:           /sys/.../iio:deviceX/in_voltageX_scale_available
 390 What:           /sys/.../iio:deviceX/in_voltage-voltage_scale_available
 391 What:           /sys/.../iio:deviceX/out_voltageX_scale_available
 392 What:           /sys/.../iio:deviceX/out_altvoltageX_scale_available
 393 What:           /sys/.../iio:deviceX/in_capacitance_scale_available
 394 What:           /sys/.../iio:deviceX/in_pressure_scale_available
 395 What:           /sys/.../iio:deviceX/in_pressureY_scale_available
 396 KernelVersion:  2.6.35
 397 Contact:        linux-iio@vger.kernel.org
 398 Description:
 399                 If a discrete set of scale values is available, they
 400                 are listed in this attribute.
 401
 402 What            /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
 403 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
 404 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
 405 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
 406 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
 407 KernelVersion:  2.6.35
 408 Contact:        linux-iio@vger.kernel.org
 409 Description:
 410                 Hardware applied gain factor. If shared across all channels,
 411                 <type>_hardwaregain is used.
 412
 413 What:           /sys/.../in_accel_filter_low_pass_3db_frequency
 414 What:           /sys/.../in_magn_filter_low_pass_3db_frequency
 415 What:           /sys/.../in_anglvel_filter_low_pass_3db_frequency
 416 KernelVersion:  3.2
 417 Contact:        linux-iio@vger.kernel.org
 418 Description:
 419                 If a known or controllable low pass filter is applied
 420                 to the underlying data channel, then this parameter
 421                 gives the 3dB frequency of the filter in Hz.
 422
 423 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
 424 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
 425 KernelVersion:  2.6.37
 426 Contact:        linux-iio@vger.kernel.org
 427 Description:
 428                 Raw (unscaled, no bias etc.) output voltage for
 429                 channel Y.  The number must always be specified and
 430                 unique if the output corresponds to a single channel.
 431                 While DAC like devices typically use out_voltage,
 432                 a continuous frequency generating device, such as
 433                 a DDS or PLL should use out_altvoltage.
 434
 435 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
 436 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
 437 KernelVersion:  2.6.37
 438 Contact:        linux-iio@vger.kernel.org
 439 Description:
 440                 Raw (unscaled, no bias etc.) output voltage for an aggregate of
 441                 channel Y, channel Z, etc.  This interface is available in cases
 442                 where a single output sets the value for multiple channels
 443                 simultaneously.
 444
 445 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
 446 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
 447 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
 448 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
 449 KernelVersion:  2.6.38
 450 Contact:        linux-iio@vger.kernel.org
 451 Description:
 452                 Specifies the output powerdown mode.
 453                 DAC output stage is disconnected from the amplifier and
 454                 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
 455                 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
 456                 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
 457                 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
 458                 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
 459                 three_state: left floating.
 460                 For a list of available output power down options read
 461                 outX_powerdown_mode_available. If Y is not present the
 462                 mode is shared across all outputs.
 463
 464 What:           /sys/.../iio:deviceX/out_votlageY_powerdown_mode_available
 465 What:           /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
 466 What:           /sys/.../iio:deviceX/out_altvotlageY_powerdown_mode_available
 467 What:           /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
 468 KernelVersion:  2.6.38
 469 Contact:        linux-iio@vger.kernel.org
 470 Description:
 471                 Lists all available output power down modes.
 472                 If Y is not present the mode is shared across all outputs.
 473
 474 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
 475 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
 476 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
 477 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
 478 KernelVersion:  2.6.38
 479 Contact:        linux-iio@vger.kernel.org
 480 Description:
 481                 Writing 1 causes output Y to enter the power down mode specified
 482                 by the corresponding outY_powerdown_mode. DAC output stage is
 483                 disconnected from the amplifier. Clearing returns to normal
 484                 operation. Y may be suppressed if all outputs are controlled
 485                 together.
 486
 487 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
 488 KernelVersion:  3.4.0
 489 Contact:        linux-iio@vger.kernel.org
 490 Description:
 491                 Output frequency for channel Y in Hz. The number must always be
 492                 specified and unique if the output corresponds to a single
 493                 channel.
 494
 495 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
 496 KernelVersion:  3.4.0
 497 Contact:        linux-iio@vger.kernel.org
 498 Description:
 499                 Phase in radians of one frequency/clock output Y
 500                 (out_altvoltageY) relative to another frequency/clock output
 501                 (out_altvoltageZ) of the device X. The number must always be
 502                 specified and unique if the output corresponds to a single
 503                 channel.
 504
 505 What:           /sys/bus/iio/devices/iio:deviceX/events
 506 KernelVersion:  2.6.35
 507 Contact:        linux-iio@vger.kernel.org
 508 Description:
 509                 Configuration of which hardware generated events are passed up
 510                 to user-space.
 511
 512 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
 513 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
 514 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
 515 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
 516 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
 517 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
 518 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
 519 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
 520 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
 521 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
 522 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
 523 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
 524 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
 525 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
 526 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
 527 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
 528 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
 529 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
 530 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
 531 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
 532 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
 533 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
 534 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
 535 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
 536 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
 537 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
 538 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
 539 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
 540 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
 541 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
 542 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
 543 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
 544 KernelVersion:  2.6.37
 545 Contact:        linux-iio@vger.kernel.org
 546 Description:
 547                 Event generated when channel passes a threshold in the specified
 548                 (_rising|_falling) direction. If the direction is not specified,
 549                 then either the device will report an event which ever direction
 550                 a single threshold value is passed in (e.g.
 551                 <type>[Y][_name]_<raw|input>_thresh_value) or
 552                 <type>[Y][_name]_<raw|input>_thresh_rising_value and
 553                 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
 554                 different values, but the device can only enable both thresholds
 555                 or neither.
 556                 Note the driver will assume the last p events requested are
 557                 to be enabled where p is how many it supports (which may vary
 558                 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 at a future point (and not those for
 563                 whatever event was previously enabled).
 564
 565 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
 566 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
 567 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
 568 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
 569 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
 570 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
 571 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
 572 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
 573 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
 574 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
 575 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
 576 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
 577 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
 578 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
 579 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
 580 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
 581 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
 582 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
 583 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
 584 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
 585 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
 586 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
 587 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
 588 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
 589 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
 590 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
 591 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
 592 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
 593 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
 594 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
 595 What:           /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
 596 What:           /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
 597 KernelVersion:  2.6.37
 598 Contact:        linux-iio@vger.kernel.org
 599 Description:
 600                 Event generated when channel passes a threshold on the rate of
 601                 change (1st differential) in the specified (_rising|_falling)
 602                 direction. If the direction is not specified, then either the
 603                 device will report an event which ever direction a single
 604                 threshold value is passed in (e.g.
 605                 <type>[Y][_name]_<raw|input>_roc_value) or
 606                 <type>[Y][_name]_<raw|input>_roc_rising_value and
 607                 <type>[Y][_name]_<raw|input>_roc_falling_value may take
 608                 different values, but the device can only enable both rate of
 609                 change thresholds or neither.
 610                 Note the driver will assume the last p events requested are
 611                 to be enabled where p is however many it supports (which may
 612                 vary depending on the exact set requested. So if you want to be
 613                 sure you have set what you think you have, check the contents of
 614                 these attributes after everything is configured. Drivers may
 615                 have to buffer any parameters so that they are consistent when
 616                 a given event type is enabled a future point (and not those for
 617                 whatever event was previously enabled).
 618
 619 What:           /sys/.../events/in_accel_thresh_rising_value
 620 What:           /sys/.../events/in_accel_thresh_falling_value
 621 What:           /sys/.../events/in_accel_x_raw_thresh_rising_value
 622 What:           /sys/.../events/in_accel_x_raw_thresh_falling_value
 623 What:           /sys/.../events/in_accel_y_raw_thresh_rising_value
 624 What:           /sys/.../events/in_accel_y_raw_thresh_falling_value
 625 What:           /sys/.../events/in_accel_z_raw_thresh_rising_value
 626 What:           /sys/.../events/in_accel_z_raw_thresh_falling_value
 627 What:           /sys/.../events/in_anglvel_x_raw_thresh_rising_value
 628 What:           /sys/.../events/in_anglvel_x_raw_thresh_falling_value
 629 What:           /sys/.../events/in_anglvel_y_raw_thresh_rising_value
 630 What:           /sys/.../events/in_anglvel_y_raw_thresh_falling_value
 631 What:           /sys/.../events/in_anglvel_z_raw_thresh_rising_value
 632 What:           /sys/.../events/in_anglvel_z_raw_thresh_falling_value
 633 What:           /sys/.../events/in_magn_x_raw_thresh_rising_value
 634 What:           /sys/.../events/in_magn_x_raw_thresh_falling_value
 635 What:           /sys/.../events/in_magn_y_raw_thresh_rising_value
 636 What:           /sys/.../events/in_magn_y_raw_thresh_falling_value
 637 What:           /sys/.../events/in_magn_z_raw_thresh_rising_value
 638 What:           /sys/.../events/in_magn_z_raw_thresh_falling_value
 639 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
 640 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
 641 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
 642 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
 643 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
 644 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
 645 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
 646 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
 647 What:           /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
 648 What:           /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
 649 What:           /sys/.../events/in_voltageY_raw_thresh_rising_value
 650 What:           /sys/.../events/in_voltageY_raw_thresh_falling_value
 651 What:           /sys/.../events/in_tempY_raw_thresh_rising_value
 652 What:           /sys/.../events/in_tempY_raw_thresh_falling_value
 653 What:           /sys/.../events/in_illuminance0_thresh_falling_value
 654 what:           /sys/.../events/in_illuminance0_thresh_rising_value
 655 what:           /sys/.../events/in_proximity0_thresh_falling_value
 656 what:           /sys/.../events/in_proximity0_thresh_rising_value
 657 KernelVersion:  2.6.37
 658 Contact:        linux-iio@vger.kernel.org
 659 Description:
 660                 Specifies the value of threshold that the device is comparing
 661                 against for the events enabled by
 662                 <type>Y[_name]_thresh[_rising|falling]_en.
 663                 If separate attributes exist for the two directions, but
 664                 direction is not specified for this attribute, then a single
 665                 threshold value applies to both directions.
 666                 The raw or input element of the name indicates whether the
 667                 value is in raw device units or in processed units (as _raw
 668                 and _input do on sysfs direct channel read attributes).
 669
 670 What:           /sys/.../events/in_accel_scale
 671 What:           /sys/.../events/in_accel_peak_scale
 672 What:           /sys/.../events/in_anglvel_scale
 673 What:           /sys/.../events/in_magn_scale
 674 What:           /sys/.../events/in_rot_from_north_magnetic_scale
 675 What:           /sys/.../events/in_rot_from_north_true_scale
 676 What:           /sys/.../events/in_voltage_scale
 677 What:           /sys/.../events/in_voltage_supply_scale
 678 What:           /sys/.../events/in_temp_scale
 679 What:           /sys/.../events/in_illuminance_scale
 680 What:           /sys/.../events/in_proximity_scale
 681 KernelVersion:  3.21
 682 Contact:        linux-iio@vger.kernel.org
 683 Description:
 684                 Specifies the conversion factor from the standard units
 685                 to device specific units used to set the event trigger
 686                 threshold.
 687
 688 What:           /sys/.../events/in_accel_x_thresh_rising_hysteresis
 689 What:           /sys/.../events/in_accel_x_thresh_falling_hysteresis
 690 What:           /sys/.../events/in_accel_x_thresh_either_hysteresis
 691 What:           /sys/.../events/in_accel_y_thresh_rising_hysteresis
 692 What:           /sys/.../events/in_accel_y_thresh_falling_hysteresis
 693 What:           /sys/.../events/in_accel_y_thresh_either_hysteresis
 694 What:           /sys/.../events/in_accel_z_thresh_rising_hysteresis
 695 What:           /sys/.../events/in_accel_z_thresh_falling_hysteresis
 696 What:           /sys/.../events/in_accel_z_thresh_either_hysteresis
 697 What:           /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
 698 What:           /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
 699 What:           /sys/.../events/in_anglvel_x_thresh_either_hysteresis
 700 What:           /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
 701 What:           /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
 702 What:           /sys/.../events/in_anglvel_y_thresh_either_hysteresis
 703 What:           /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
 704 What:           /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
 705 What:           /sys/.../events/in_anglvel_z_thresh_either_hysteresis
 706 What:           /sys/.../events/in_magn_x_thresh_rising_hysteresis
 707 What:           /sys/.../events/in_magn_x_thresh_falling_hysteresis
 708 What:           /sys/.../events/in_magn_x_thresh_either_hysteresis
 709 What:           /sys/.../events/in_magn_y_thresh_rising_hysteresis
 710 What:           /sys/.../events/in_magn_y_thresh_falling_hysteresis
 711 What:           /sys/.../events/in_magn_y_thresh_either_hysteresis
 712 What:           /sys/.../events/in_magn_z_thresh_rising_hysteresis
 713 What:           /sys/.../events/in_magn_z_thresh_falling_hysteresis
 714 What:           /sys/.../events/in_magn_z_thresh_either_hysteresis
 715 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
 716 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
 717 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
 718 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
 719 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
 720 What:           /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
 721 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
 722 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
 723 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
 724 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
 725 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
 726 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
 727 What:           /sys/.../events/in_voltageY_thresh_rising_hysteresis
 728 What:           /sys/.../events/in_voltageY_thresh_falling_hysteresis
 729 What:           /sys/.../events/in_voltageY_thresh_either_hysteresis
 730 What:           /sys/.../events/in_tempY_thresh_rising_hysteresis
 731 What:           /sys/.../events/in_tempY_thresh_falling_hysteresis
 732 What:           /sys/.../events/in_tempY_thresh_either_hysteresis
 733 What:           /sys/.../events/in_illuminance0_thresh_falling_hysteresis
 734 what:           /sys/.../events/in_illuminance0_thresh_rising_hysteresis
 735 what:           /sys/.../events/in_illuminance0_thresh_either_hysteresis
 736 what:           /sys/.../events/in_proximity0_thresh_falling_hysteresis
 737 what:           /sys/.../events/in_proximity0_thresh_rising_hysteresis
 738 what:           /sys/.../events/in_proximity0_thresh_either_hysteresis
 739 KernelVersion:  3.13
 740 Contact:        linux-iio@vger.kernel.org
 741 Description:
 742                 Specifies the hysteresis of threshold that the device is comparing
 743                 against for the events enabled by
 744                 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
 745                 If separate attributes exist for the two directions, but
 746                 direction is not specified for this attribute, then a single
 747                 hysteresis value applies to both directions.
 748                 For falling events the hysteresis is added to the _value attribute for
 749                 this event to get the upper threshold for when the event goes back to
 750                 normal, for rising events the hysteresis is subtracted from the _value
 751                 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
 752                 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
 753                 will get activated once in_voltage0_raw goes above 1200 and will become
 754                 deactived again once the value falls below 1150.
 755
 756 What:           /sys/.../events/in_accel_x_raw_roc_rising_value
 757 What:           /sys/.../events/in_accel_x_raw_roc_falling_value
 758 What:           /sys/.../events/in_accel_y_raw_roc_rising_value
 759 What:           /sys/.../events/in_accel_y_raw_roc_falling_value
 760 What:           /sys/.../events/in_accel_z_raw_roc_rising_value
 761 What:           /sys/.../events/in_accel_z_raw_roc_falling_value
 762 What:           /sys/.../events/in_anglvel_x_raw_roc_rising_value
 763 What:           /sys/.../events/in_anglvel_x_raw_roc_falling_value
 764 What:           /sys/.../events/in_anglvel_y_raw_roc_rising_value
 765 What:           /sys/.../events/in_anglvel_y_raw_roc_falling_value
 766 What:           /sys/.../events/in_anglvel_z_raw_roc_rising_value
 767 What:           /sys/.../events/in_anglvel_z_raw_roc_falling_value
 768 What:           /sys/.../events/in_magn_x_raw_roc_rising_value
 769 What:           /sys/.../events/in_magn_x_raw_roc_falling_value
 770 What:           /sys/.../events/in_magn_y_raw_roc_rising_value
 771 What:           /sys/.../events/in_magn_y_raw_roc_falling_value
 772 What:           /sys/.../events/in_magn_z_raw_roc_rising_value
 773 What:           /sys/.../events/in_magn_z_raw_roc_falling_value
 774 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
 775 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
 776 What:           /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
 777 What:           /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
 778 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
 779 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
 780 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
 781 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
 782 What:           /sys/.../events/in_voltageY_supply_raw_roc_rising_value
 783 What:           /sys/.../events/in_voltageY_supply_raw_roc_falling_value
 784 What:           /sys/.../events/in_voltageY_raw_roc_rising_value
 785 What:           /sys/.../events/in_voltageY_raw_roc_falling_value
 786 What:           /sys/.../events/in_tempY_raw_roc_rising_value
 787 What:           /sys/.../events/in_tempY_raw_roc_falling_value
 788 KernelVersion:  2.6.37
 789 Contact:        linux-iio@vger.kernel.org
 790 Description:
 791                 Specifies the value of rate of change threshold that the
 792                 device is comparing against for the events enabled by
 793                 <type>[Y][_name]_roc[_rising|falling]_en.
 794                 If separate attributes exist for the two directions,
 795                 but direction is not specified for this attribute,
 796                 then a single threshold value applies to both directions.
 797                 The raw or input element of the name indicates whether the
 798                 value is in raw device units or in processed units (as _raw
 799                 and _input do on sysfs direct channel read attributes).
 800
 801 What:           /sys/.../events/in_accel_x_thresh_rising_period
 802 What:           /sys/.../events/in_accel_x_thresh_falling_period
 803 What:           /sys/.../events/in_accel_x_roc_rising_period
 804 What:           /sys/.../events/in_accel_x_roc_falling_period
 805 What:           /sys/.../events/in_accel_y_thresh_rising_period
 806 What:           /sys/.../events/in_accel_y_thresh_falling_period
 807 What:           /sys/.../events/in_accel_y_roc_rising_period
 808 What:           /sys/.../events/in_accel_y_roc_falling_period
 809 What:           /sys/.../events/in_accel_z_thresh_rising_period
 810 What:           /sys/.../events/in_accel_z_thresh_falling_period
 811 What:           /sys/.../events/in_accel_z_roc_rising_period
 812 What:           /sys/.../events/in_accel_z_roc_falling_period
 813 What:           /sys/.../events/in_anglvel_x_thresh_rising_period
 814 What:           /sys/.../events/in_anglvel_x_thresh_falling_period
 815 What:           /sys/.../events/in_anglvel_x_roc_rising_period
 816 What:           /sys/.../events/in_anglvel_x_roc_falling_period
 817 What:           /sys/.../events/in_anglvel_y_thresh_rising_period
 818 What:           /sys/.../events/in_anglvel_y_thresh_falling_period
 819 What:           /sys/.../events/in_anglvel_y_roc_rising_period
 820 What:           /sys/.../events/in_anglvel_y_roc_falling_period
 821 What:           /sys/.../events/in_anglvel_z_thresh_rising_period
 822 What:           /sys/.../events/in_anglvel_z_thresh_falling_period
 823 What:           /sys/.../events/in_anglvel_z_roc_rising_period
 824 What:           /sys/.../events/in_anglvel_z_roc_falling_period
 825 What:           /sys/.../events/in_magn_x_thresh_rising_period
 826 What:           /sys/.../events/in_magn_x_thresh_falling_period
 827 What:           /sys/.../events/in_magn_x_roc_rising_period
 828 What:           /sys/.../events/in_magn_x_roc_falling_period
 829 What:           /sys/.../events/in_magn_y_thresh_rising_period
 830 What:           /sys/.../events/in_magn_y_thresh_falling_period
 831 What:           /sys/.../events/in_magn_y_roc_rising_period
 832 What:           /sys/.../events/in_magn_y_roc_falling_period
 833 What:           /sys/.../events/in_magn_z_thresh_rising_period
 834 What:           /sys/.../events/in_magn_z_thresh_falling_period
 835 What:           /sys/.../events/in_magn_z_roc_rising_period
 836 What:           /sys/.../events/in_magn_z_roc_falling_period
 837 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
 838 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
 839 What:           /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
 840 What:           /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
 841 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_period
 842 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_period
 843 What:           /sys/.../events/in_rot_from_north_true_roc_rising_period
 844 What:           /sys/.../events/in_rot_from_north_true_roc_falling_period
 845 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
 846 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
 847 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
 848 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
 849 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
 850 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
 851 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
 852 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
 853 What:           /sys/.../events/in_voltageY_supply_thresh_rising_period
 854 What:           /sys/.../events/in_voltageY_supply_thresh_falling_period
 855 What:           /sys/.../events/in_voltageY_supply_roc_rising_period
 856 What:           /sys/.../events/in_voltageY_supply_roc_falling_period
 857 What:           /sys/.../events/in_voltageY_thresh_rising_period
 858 What:           /sys/.../events/in_voltageY_thresh_falling_period
 859 What:           /sys/.../events/in_voltageY_roc_rising_period
 860 What:           /sys/.../events/in_voltageY_roc_falling_period
 861 What:           /sys/.../events/in_tempY_thresh_rising_period
 862 What:           /sys/.../events/in_tempY_thresh_falling_period
 863 What:           /sys/.../events/in_tempY_roc_rising_period
 864 What:           /sys/.../events/in_tempY_roc_falling_period
 865 What:           /sys/.../events/in_accel_x&y&z_mag_falling_period
 866 What:           /sys/.../events/in_intensity0_thresh_period
 867 What:           /sys/.../events/in_proximity0_thresh_period
 868 What:           /sys/.../events/in_activity_still_thresh_rising_period
 869 What:           /sys/.../events/in_activity_still_thresh_falling_period
 870 What:           /sys/.../events/in_activity_walking_thresh_rising_period
 871 What:           /sys/.../events/in_activity_walking_thresh_falling_period
 872 What:           /sys/.../events/in_activity_jogging_thresh_rising_period
 873 What:           /sys/.../events/in_activity_jogging_thresh_falling_period
 874 What:           /sys/.../events/in_activity_running_thresh_rising_period
 875 What:           /sys/.../events/in_activity_running_thresh_falling_period
 876 KernelVersion:  2.6.37
 877 Contact:        linux-iio@vger.kernel.org
 878 Description:
 879                 Period of time (in seconds) for which the condition must be
 880                 met before an event is generated. If direction is not
 881                 specified then this period applies to both directions.
 882
 883 What:           /sys/.../events/in_activity_still_thresh_rising_en
 884 What:           /sys/.../events/in_activity_still_thresh_falling_en
 885 What:           /sys/.../events/in_activity_walking_thresh_rising_en
 886 What:           /sys/.../events/in_activity_walking_thresh_falling_en
 887 What:           /sys/.../events/in_activity_jogging_thresh_rising_en
 888 What:           /sys/.../events/in_activity_jogging_thresh_falling_en
 889 What:           /sys/.../events/in_activity_running_thresh_rising_en
 890 What:           /sys/.../events/in_activity_running_thresh_falling_en
 891 KernelVersion:  3.19
 892 Contact:        linux-iio@vger.kernel.org
 893 Description:
 894                 Enables or disables activitity events. Depending on direction
 895                 an event is generated when sensor ENTERS or LEAVES a given state.
 896
 897 What:           /sys/.../events/in_activity_still_thresh_rising_value
 898 What:           /sys/.../events/in_activity_still_thresh_falling_value
 899 What:           /sys/.../events/in_activity_walking_thresh_rising_value
 900 What:           /sys/.../events/in_activity_walking_thresh_falling_value
 901 What:           /sys/.../events/in_activity_jogging_thresh_rising_value
 902 What:           /sys/.../events/in_activity_jogging_thresh_falling_value
 903 What:           /sys/.../events/in_activity_running_thresh_rising_value
 904 What:           /sys/.../events/in_activity_running_thresh_falling_value
 905 KernelVersion:  3.19
 906 Contact:        linux-iio@vger.kernel.org
 907 Description:
 908                 Confidence value (in units as percentage) to be used
 909                 for deciding when an event should be generated. E.g for
 910                 running: If the confidence value reported by the sensor
 911                 is greater than in_activity_running_thresh_rising_value
 912                 then the sensor ENTERS running state. Conversely, if the
 913                 confidence value reported by the sensor is lower than
 914                 in_activity_running_thresh_falling_value then the sensor
 915                 is LEAVING running state.
 916
 917 What:           /sys/.../iio:deviceX/events/in_accel_mag_en
 918 What:           /sys/.../iio:deviceX/events/in_accel_mag_rising_en
 919 What:           /sys/.../iio:deviceX/events/in_accel_mag_falling_en
 920 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_en
 921 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
 922 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
 923 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_en
 924 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
 925 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
 926 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_en
 927 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
 928 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
 929 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
 930 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
 931 KernelVersion:  2.6.37
 932 Contact:        linux-iio@vger.kernel.org
 933 Description:
 934                 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
 935                 magnitude of the channel is compared to the threshold, not its
 936                 signed value.
 937
 938 What:           /sys/.../events/in_accel_raw_mag_value
 939 What:           /sys/.../events/in_accel_x_raw_mag_rising_value
 940 What:           /sys/.../events/in_accel_y_raw_mag_rising_value
 941 What:           /sys/.../events/in_accel_z_raw_mag_rising_value
 942 KernelVersion:  2.6.37
 943 Contact:        linux-iio@vger.kernel.org
 944 Description:
 945                 The value to which the magnitude of the channel is compared. If
 946                 number or direction is not specified, applies to all channels of
 947                 this type.
 948
 949 What:           /sys/.../events/in_steps_change_en
 950 KernelVersion:  4.0
 951 Contact:        linux-iio@vger.kernel.org
 952 Description:
 953                 Event generated when channel passes a threshold on the absolute
 954                 change in value. E.g. for steps: a step change event is
 955                 generated each time the user takes N steps, where N is set using
 956                 in_steps_change_value.
 957
 958 What:           /sys/.../events/in_steps_change_value
 959 KernelVersion:  4.0
 960 Contact:        linux-iio@vger.kernel.org
 961 Description:
 962                 Specifies the value of change threshold that the
 963                 device is comparing against for the events enabled by
 964                 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
 965                 if set to 3, a step change event will be generated every 3
 966                 steps.
 967
 968 What:           /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
 969 KernelVersion:  2.6.35
 970 Contact:        linux-iio@vger.kernel.org
 971 Description:
 972                 The name of the trigger source being used, as per string given
 973                 in /sys/class/iio/triggerY/name.
 974
 975 What:           /sys/bus/iio/devices/iio:deviceX/buffer/length
 976 KernelVersion:  2.6.35
 977 Contact:        linux-iio@vger.kernel.org
 978 Description:
 979                 Number of scans contained by the buffer.
 980
 981 What:           /sys/bus/iio/devices/iio:deviceX/buffer/bytes_per_datum
 982 KernelVersion:  2.6.37
 983 Contact:        linux-iio@vger.kernel.org
 984 Description:
 985                 Bytes per scan.  Due to alignment fun, the scan may be larger
 986                 than implied directly by the scan_element parameters.
 987
 988 What:           /sys/bus/iio/devices/iio:deviceX/buffer/enable
 989 KernelVersion:  2.6.35
 990 Contact:        linux-iio@vger.kernel.org
 991 Description:
 992                 Actually start the buffer capture up.  Will start trigger
 993                 if first device and appropriate.
 994
 995 What:           /sys/bus/iio/devices/iio:deviceX/scan_elements
 996 KernelVersion:  2.6.37
 997 Contact:        linux-iio@vger.kernel.org
 998 Description:
 999                 Directory containing interfaces for elements that will be
1000                 captured for a single triggered sample set in the buffer.
1001
1002 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1003 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1004 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1005 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1006 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1007 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1008 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1009 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1010 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1011 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1012 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1013 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1014 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1015 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1016 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1017 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1018 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1019 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1020 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1021 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1022 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_en
1023 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1024 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_en
1025 KernelVersion:  2.6.37
1026 Contact:        linux-iio@vger.kernel.org
1027 Description:
1028                 Scan element control for triggered data capture.
1029
1030 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type
1031 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1032 What:           /sys/.../iio:deviceX/scan_elements/in_magn_type
1033 What:           /sys/.../iio:deviceX/scan_elements/in_incli_type
1034 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1035 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_type
1036 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1037 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1038 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1039 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_type
1040 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1041 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_type
1042 KernelVersion:  2.6.37
1043 Contact:        linux-iio@vger.kernel.org
1044 Description:
1045                 Description of the scan element data storage within the buffer
1046                 and hence the form in which it is read from user-space.
1047                 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1048                 be or le specifies big or little endian. s or u specifies if
1049                 signed (2's complement) or unsigned. bits is the number of bits
1050                 of data and storagebits is the space (after padding) that it
1051                 occupies in the buffer. shift if specified, is the shift that
1052                 needs to be applied prior to masking out unused bits. Some
1053                 devices put their data in the middle of the transferred elements
1054                 with additional information on both sides.  Note that some
1055                 devices will have additional information in the unused bits
1056                 so to get a clean value, the bits value must be used to mask
1057                 the buffer output value appropriately.  The storagebits value
1058                 also specifies the data alignment.  So s48/64>>2 will be a
1059                 signed 48 bit integer stored in a 64 bit location aligned to
1060                 a 64 bit boundary. To obtain the clean value, shift right 2
1061                 and apply a mask to zero the top 16 bits of the result.
1062                 For other storage combinations this attribute will be extended
1063                 appropriately.
1064
1065 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1066 KernelVersion:  2.6.37
1067 Contact:        linux-iio@vger.kernel.org
1068 Description:
1069                 If the type parameter can take one of a small set of values,
1070                 this attribute lists them.
1071
1072 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1073 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1074 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1075 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1076 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1077 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1078 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1079 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1080 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1081 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1082 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1083 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1084 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1085 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1086 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1087 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1088 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1089 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1090 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1091 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_index
1092 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1093 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_index
1094 KernelVersion:  2.6.37
1095 Contact:        linux-iio@vger.kernel.org
1096 Description:
1097                 A single positive integer specifying the position of this
1098                 scan element in the buffer. Note these are not dependent on
1099                 what is enabled and may not be contiguous. Thus for user-space
1100                 to establish the full layout these must be used in conjunction
1101                 with all _en attributes to establish which channels are present,
1102                 and the relevant _type attributes to establish the data storage
1103                 format.
1104
1105 What:           /sys/.../iio:deviceX/in_activity_still_input
1106 What:           /sys/.../iio:deviceX/in_activity_walking_input
1107 What:           /sys/.../iio:deviceX/in_activity_jogging_input
1108 What:           /sys/.../iio:deviceX/in_activity_running_input
1109 KernelVersion:  3.19
1110 Contact:        linux-iio@vger.kernel.org
1111 Description:
1112                 This attribute is used to read the confidence for an activity
1113                 expressed in units as percentage.
1114
1115 What:           /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1116 KernelVersion:  2.6.38
1117 Contact:        linux-iio@vger.kernel.org
1118 Description:
1119                 This attribute is used to read the amount of quadrature error
1120                 present in the device at a given time.
1121
1122 What:           /sys/.../iio:deviceX/in_accelX_power_mode
1123 KernelVersion:  3.11
1124 Contact:        linux-iio@vger.kernel.org
1125 Description:
1126                 Specifies the chip power mode.
1127                 low_noise: reduce noise level from ADC,
1128                 low_power: enable low current consumption.
1129                 For a list of available output power modes read
1130                 in_accel_power_mode_available.
1131
1132 What:           /sys/.../iio:deviceX/in_energy_input
1133 What:           /sys/.../iio:deviceX/in_energy_raw
1134 KernelVersion:  4.0
1135 Contact:        linux-iio@vger.kernel.org
1136 Description:
1137                 This attribute is used to read the energy value reported by the
1138                 device (e.g.: human activity sensors report energy burnt by the
1139                 user). Units after application of scale are Joules.
1140
1141 What:           /sys/.../iio:deviceX/in_distance_input
1142 What:           /sys/.../iio:deviceX/in_distance_raw
1143 KernelVersion:  4.0
1144 Contact:        linux-iio@vger.kernel.org
1145 Description:
1146                 This attribute is used to read the distance covered by the user
1147                 since the last reboot while activated. Units after application
1148                 of scale are meters.
1149
1150 What:           /sys/bus/iio/devices/iio:deviceX/store_eeprom
1151 KernelVersion:  3.4.0
1152 Contact:        linux-iio@vger.kernel.org
1153 Description:
1154                 Writing '1' stores the current device configuration into
1155                 on-chip EEPROM. After power-up or chip reset the device will
1156                 automatically load the saved configuration.
1157
1158 What:           /sys/.../iio:deviceX/in_proximity_raw
1159 What:           /sys/.../iio:deviceX/in_proximity_input
1160 What:           /sys/.../iio:deviceX/in_proximityY_raw
1161 KernelVersion:  3.4
1162 Contact:        linux-iio@vger.kernel.org
1163 Description:
1164                 Proximity measurement indicating that some
1165                 object is near the sensor, usually be observing
1166                 reflectivity of infrared or ultrasound emitted.
1167                 Often these sensors are unit less and as such conversion
1168                 to SI units is not possible.  Where it is, the units should
1169                 be meters.  If such a conversion is not possible, the reported
1170                 values should behave in the same way as a distance, i.e. lower
1171                 values indicate something is closer to the sensor.
1172
1173 What:           /sys/.../iio:deviceX/in_illuminance_input
1174 What:           /sys/.../iio:deviceX/in_illuminance_raw
1175 What:           /sys/.../iio:deviceX/in_illuminanceY_input
1176 What:           /sys/.../iio:deviceX/in_illuminanceY_raw
1177 What:           /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1178 What:           /sys/.../iio:deviceX/in_illuminance_ir_raw
1179 What:           /sys/.../iio:deviceX/in_illuminance_clear_raw
1180 KernelVersion:  3.4
1181 Contact:        linux-iio@vger.kernel.org
1182 Description:
1183                 Illuminance measurement, units after application of scale
1184                 and offset are lux.
1185
1186 What:           /sys/.../iio:deviceX/in_intensityY_raw
1187 What:           /sys/.../iio:deviceX/in_intensityY_ir_raw
1188 What:           /sys/.../iio:deviceX/in_intensityY_both_raw
1189 KernelVersion:  3.4
1190 Contact:        linux-iio@vger.kernel.org
1191 Description:
1192                 Unit-less light intensity. Modifiers both and ir indicate
1193                 that measurements contains visible and infrared light
1194                 components or just infrared light, respectively.
1195
1196 What:           /sys/.../iio:deviceX/in_intensity_red_integration_time
1197 What:           /sys/.../iio:deviceX/in_intensity_green_integration_time
1198 What:           /sys/.../iio:deviceX/in_intensity_blue_integration_time
1199 What:           /sys/.../iio:deviceX/in_intensity_clear_integration_time
1200 What:           /sys/.../iio:deviceX/in_illuminance_integration_time
1201 KernelVersion:  3.12
1202 Contact:        linux-iio@vger.kernel.org
1203 Description:
1204                 This attribute is used to get/set the integration time in
1205                 seconds.
1206
1207 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1208 KernelVersion:  4.0
1209 Contact:        linux-iio@vger.kernel.org
1210 Description:
1211                 Number of seconds in which to compute speed.
1212
1213 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1214 KernelVersion:  3.15
1215 Contact:        linux-iio@vger.kernel.org
1216 Description:
1217                 Raw value of quaternion components using a format
1218                 x y z w. Here x, y, and z component represents the axis about
1219                 which a rotation will occur and w component represents the
1220                 amount of rotation.
1221
1222 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1223 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1224 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1225 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1226 KernelVersion:  3.15
1227 Contact:        linux-iio@vger.kernel.org
1228 Description:
1229                 Raw value of rotation from true/magnetic north measured with
1230                 or without compensation from tilt sensors.
1231
1232 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1233 KernelVersion:  3.18
1234 Contact:        linux-iio@vger.kernel.org
1235 Description:
1236                 Raw current measurement from channel X. Units are in milliamps
1237                 after application of scale and offset. If no offset or scale is
1238                 present, output should be considered as processed with the
1239                 unit in milliamps.
1240
1241 What:           /sys/.../iio:deviceX/in_energy_en
1242 What:           /sys/.../iio:deviceX/in_distance_en
1243 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1244 What:           /sys/.../iio:deviceX/in_steps_en
1245 KernelVersion:  3.19
1246 Contact:        linux-iio@vger.kernel.org
1247 Description:
1248                 Activates a device feature that runs in firmware/hardware.
1249                 E.g. for steps: the pedometer saves power while not used;
1250                 when activated, it will count the steps taken by the user in
1251                 firmware and export them through in_steps_input.
1252
1253 What:           /sys/.../iio:deviceX/in_steps_input
1254 KernelVersion:  3.19
1255 Contact:        linux-iio@vger.kernel.org
1256 Description:
1257                 This attribute is used to read the number of steps taken by the user
1258                 since the last reboot while activated.
1259
1260 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1261 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1262 KernelVersion:  3.19
1263 Contact:        linux-iio@vger.kernel.org
1264 Description:
1265                 This attribute is used to read the current speed value of the
1266                 user (which is the norm or magnitude of the velocity vector).
1267                 Units after application of scale are m/s.
1268
1269 What:           /sys/.../iio:deviceX/in_steps_debounce_count
1270 KernelVersion:  4.0
1271 Contact:        linux-iio@vger.kernel.org
1272 Description:
1273                 Specifies the number of steps that must occur within
1274                 in_steps_filter_debounce_time for the pedometer to decide the
1275                 consumer is making steps.
1276
1277 What:           /sys/.../iio:deviceX/in_steps_debounce_time
1278 KernelVersion:  4.0
1279 Contact:        linux-iio@vger.kernel.org
1280 Description:
1281                 Specifies number of seconds in which we compute the steps
1282                 that occur in order to decide if the consumer is making steps.
1283
1284 What:           /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1285 KernelVersion:  4.2
1286 Contact:        linux-iio@vger.kernel.org
1287 Description:
1288                 A single positive integer specifying the maximum number of scan
1289                 elements to wait for.
1290                 Poll will block until the watermark is reached.
1291                 Blocking read will wait until the minimum between the requested
1292                 read amount or the low water mark is available.
1293                 Non-blocking read will retrieve the available samples from the
1294                 buffer even if there are less samples then watermark level. This
1295                 allows the application to block on poll with a timeout and read
1296                 the available samples after the timeout expires and thus have a
1297                 maximum delay guarantee.
1298
1299 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1300 KernelVersion: 4.2
1301 Contact:        linux-iio@vger.kernel.org
1302 Description:
1303                 A read-only boolean value that indicates if the hardware fifo is
1304                 currently enabled or disabled. If the device does not have a
1305                 hardware fifo this entry is not present.
1306                 The hardware fifo is enabled when the buffer is enabled if the
1307                 current hardware fifo watermark level is set and other current
1308                 device settings allows it (e.g. if a trigger is set that samples
1309                 data differently that the hardware fifo does then hardware fifo
1310                 will not enabled).
1311                 If the hardware fifo is enabled and the level of the hardware
1312                 fifo reaches the hardware fifo watermark level the device will
1313                 flush its hardware fifo to the device buffer. Doing a non
1314                 blocking read on the device when no samples are present in the
1315                 device buffer will also force a flush.
1316                 When the hardware fifo is enabled there is no need to use a
1317                 trigger to use buffer mode since the watermark settings
1318                 guarantees that the hardware fifo is flushed to the device
1319                 buffer.
1320
1321 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1322 KernelVersion: 4.2
1323 Contact:        linux-iio@vger.kernel.org
1324 Description:
1325                 Read-only entry that contains a single integer specifying the
1326                 current watermark level for the hardware fifo. If the device
1327                 does not have a hardware fifo this entry is not present.
1328                 The watermark level for the hardware fifo is set by the driver
1329                 based on the value set by the user in buffer/watermark but
1330                 taking into account hardware limitations (e.g. most hardware
1331                 buffers are limited to 32-64 samples, some hardware buffers
1332                 watermarks are fixed or have minimum levels).  A value of 0
1333                 means that the hardware watermark is unset.
1334
1335 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1336 KernelVersion: 4.2
1337 Contact:       linux-iio@vger.kernel.org
1338 Description:
1339                 A single positive integer specifying the minimum watermark level
1340                 for the hardware fifo of this device. If the device does not
1341                 have a hardware fifo this entry is not present.
1342                 If the user sets buffer/watermark to a value less than this one,
1343                 then the hardware watermark will remain unset.
1344
1345 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1346 KernelVersion: 4.2
1347 Contact:       linux-iio@vger.kernel.org
1348 Description:
1349                 A single positive integer specifying the maximum watermark level
1350                 for the hardware fifo of this device. If the device does not
1351                 have a hardware fifo this entry is not present.
1352                 If the user sets buffer/watermark to a value greater than this
1353                 one, then the hardware watermark will be capped at this value.
1354
1355 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1356 KernelVersion: 4.2
1357 Contact:       linux-iio@vger.kernel.org
1358 Description:
1359                 A list of positive integers specifying the available watermark
1360                 levels for the hardware fifo. This entry is optional and if it
1361                 is not present it means that all the values between
1362                 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1363                 If the user sets buffer/watermark to a value greater than
1364                 hwfifo_watermak_min but not equal to any of the values in this
1365                 list, the driver will chose an appropriate value for the
1366                 hardware fifo watermark level.