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 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
  75 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
  76 KernelVersion:  2.6.35
  77 Contact:        linux-iio@vger.kernel.org
  78 Description:
  79                 Raw (unscaled no bias removal etc.) voltage measurement from
  80                 channel Y. In special cases where the channel does not
  81                 correspond to externally available input one of the named
  82                 versions may be used. The number must always be specified and
  83                 unique to allow association with event codes. Units after
  84                 application of scale and offset are millivolts.
  85
  86                 Channels with 'i' and 'q' modifiers always exist in pairs and both
  87                 channels refer to the same signal. The 'i' channel contains the in-phase
  88                 component of the signal while the 'q' channel contains the quadrature
  89                 component.
  90
  91 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
  92 KernelVersion:  2.6.35
  93 Contact:        linux-iio@vger.kernel.org
  94 Description:
  95                 Raw (unscaled) differential voltage measurement equivalent to
  96                 channel Y - channel Z where these channel numbers apply to the
  97                 physically equivalent inputs when non differential readings are
  98                 separately available. In differential only parts, then all that
  99                 is required is a consistent labeling.  Units after application
 100                 of scale and offset are millivolts.
 101
 102 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
 103 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
 104 KernelVersion:  3.17
 105 Contact:        linux-iio@vger.kernel.org
 106 Description:
 107                 Raw (unscaled no bias removal etc.) current measurement from
 108                 channel Y. In special cases where the channel does not
 109                 correspond to externally available input one of the named
 110                 versions may be used. The number must always be specified and
 111                 unique to allow association with event codes. Units after
 112                 application of scale and offset are milliamps.
 113
 114 What:           /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
 115 KernelVersion:  3.2
 116 Contact:        linux-iio@vger.kernel.org
 117 Description:
 118                 Raw capacitance measurement from channel Y. Units after
 119                 application of scale and offset are nanofarads.
 120
 121 What:           /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
 122 KernelVersion:  3.2
 123 Contact:        linux-iio@vger.kernel.org
 124 Description:
 125                 Raw differential capacitance measurement equivalent to
 126                 channel Y - channel Z where these channel numbers apply to the
 127                 physically equivalent inputs when non differential readings are
 128                 separately available. In differential only parts, then all that
 129                 is required is a consistent labeling.  Units after application
 130                 of scale and offset are nanofarads.
 131
 132 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_raw
 133 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
 134 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
 135 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
 136 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
 137 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
 138 KernelVersion:  2.6.35
 139 Contact:        linux-iio@vger.kernel.org
 140 Description:
 141                 Raw (unscaled no bias removal etc.) temperature measurement.
 142                 If an axis is specified it generally means that the temperature
 143                 sensor is associated with one part of a compound device (e.g.
 144                 a gyroscope axis). The ambient and object modifiers distinguish
 145                 between ambient (reference) and distant temperature for contact-
 146                 less measurements. Units after application of scale and offset
 147                 are milli degrees Celsius.
 148
 149 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_input
 150 KernelVersion:  2.6.38
 151 Contact:        linux-iio@vger.kernel.org
 152 Description:
 153                 Scaled temperature measurement in milli degrees Celsius.
 154
 155 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
 156 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
 157 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
 158 KernelVersion:  2.6.35
 159 Contact:        linux-iio@vger.kernel.org
 160 Description:
 161                 Acceleration in direction x, y or z (may be arbitrarily assigned
 162                 but should match other such assignments on device).
 163                 Has all of the equivalent parameters as per voltageY. Units
 164                 after application of scale and offset are m/s^2.
 165
 166 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
 167 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
 168 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
 169 KernelVersion:  2.6.35
 170 Contact:        linux-iio@vger.kernel.org
 171 Description:
 172                 Angular velocity about axis x, y or z (may be arbitrarily
 173                 assigned). Has all the equivalent parameters as per voltageY.
 174                 Units after application of scale and offset are radians per
 175                 second.
 176
 177 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
 178 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
 179 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
 180 KernelVersion:  2.6.35
 181 Contact:        linux-iio@vger.kernel.org
 182 Description:
 183                 Inclination raw reading about axis x, y or z (may be
 184                 arbitrarily assigned). Data converted by application of offset
 185                 and scale to degrees.
 186
 187 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
 188 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
 189 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
 190 KernelVersion:  2.6.35
 191 Contact:        linux-iio@vger.kernel.org
 192 Description:
 193                 Magnetic field along axis x, y or z (may be arbitrarily
 194                 assigned).  Data converted by application of offset
 195                 then scale to Gauss.
 196
 197 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
 198 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
 199 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
 200 KernelVersion:  2.6.36
 201 Contact:        linux-iio@vger.kernel.org
 202 Description:
 203                 Highest value since some reset condition.  These
 204                 attributes allow access to this and are otherwise
 205                 the direct equivalent of the <type>Y[_name]_raw attributes.
 206
 207 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
 208 KernelVersion:  2.6.36
 209 Contact:        linux-iio@vger.kernel.org
 210 Description:
 211                 A computed peak value based on the sum squared magnitude of
 212                 the underlying value in the specified directions.
 213
 214 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
 215 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
 216 KernelVersion:  3.8
 217 Contact:        linux-iio@vger.kernel.org
 218 Description:
 219                 Raw pressure measurement from channel Y. Units after
 220                 application of scale and offset are kilopascal.
 221
 222 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
 223 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_input
 224 KernelVersion:  3.8
 225 Contact:        linux-iio@vger.kernel.org
 226 Description:
 227                 Scaled pressure measurement from channel Y, in kilopascal.
 228
 229 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
 230 KernelVersion:  3.14
 231 Contact:        linux-iio@vger.kernel.org
 232 Description:
 233                 Raw humidity measurement of air. Units after application of
 234                 scale and offset are milli percent.
 235
 236 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
 237 KernelVersion:  3.14
 238 Contact:        linux-iio@vger.kernel.org
 239 Description:
 240                 Scaled humidity measurement in milli percent.
 241
 242 What:           /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
 243 KernelVersion:  3.5
 244 Contact:        linux-iio@vger.kernel.org
 245 Description:
 246                 Averaged raw measurement from channel X. The number of values
 247                 used for averaging is device specific. The converting rules for
 248                 normal raw values also applies to the averaged raw values.
 249
 250 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_offset
 251 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
 252 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
 253 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
 254 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
 255 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
 256 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
 257 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
 258 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
 259 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
 260 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
 261 What:           /sys/bus/iio/devices/iio:deviceX/in_current_offset
 262 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
 263 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
 264 What:           /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
 265 What:           /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
 266 What:           /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
 267 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_offset
 268 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
 269 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
 270 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
 271 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_offset
 272 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_offset
 273 KernelVersion:  2.6.35
 274 Contact:        linux-iio@vger.kernel.org
 275 Description:
 276                 If known for a device, offset to be added to <type>[Y]_raw prior
 277                 to scaling by <type>[Y]_scale in order to obtain value in the
 278                 <type> units as specified in <type>[Y]_raw documentation.
 279                 Not present if the offset is always 0 or unknown. If Y or
 280                 axis <x|y|z> is not present, then the offset applies to all
 281                 in channels of <type>.
 282                 May be writable if a variable offset can be applied on the
 283                 device. Note that this is different to calibbias which
 284                 is for devices (or drivers) that apply offsets to compensate
 285                 for variation between different instances of the part, typically
 286                 adjusted by using some hardware supported calibration procedure.
 287                 Calibbias is applied internally, offset is applied in userspace
 288                 to the _raw output.
 289
 290 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
 291 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
 292 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
 293 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
 294 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
 295 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
 296 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
 297 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
 298 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
 299 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
 300 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
 301 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
 302 What:           /sys/bus/iio/devices/iio:deviceX/in_current_scale
 303 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
 304 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
 305 What:           /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
 306 What:           /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
 307 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale
 308 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
 309 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
 310 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_scale
 311 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_scale
 312 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_scale
 313 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
 314 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
 315 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
 316 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
 317 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
 318 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
 319 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
 320 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
 321 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
 322 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
 323 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
 324 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
 325 KernelVersion:  2.6.35
 326 Contact:        linux-iio@vger.kernel.org
 327 Description:
 328                 If known for a device, scale to be applied to <type>Y[_name]_raw
 329                 post addition of <type>[Y][_name]_offset in order to obtain the
 330                 measured value in <type> units as specified in
 331                 <type>[Y][_name]_raw documentation.  If shared across all in
 332                 channels then Y and <x|y|z> are not present and the value is
 333                 called <type>[Y][_name]_scale. The peak modifier means this
 334                 value is applied to <type>Y[_name]_peak_raw values.
 335
 336 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
 337 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
 338 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
 339 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
 340 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
 341 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
 342 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
 343 What:           /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
 344 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
 345 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
 346 KernelVersion:  2.6.35
 347 Contact:        linux-iio@vger.kernel.org
 348 Description:
 349                 Hardware applied calibration offset (assumed to fix production
 350                 inaccuracies).
 351
 352 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
 353 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
 354 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
 355 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
 356 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
 357 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
 358 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
 359 What            /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
 360 What            /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
 361 What            /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
 362 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
 363 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
 364 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
 365 what            /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
 366 what            /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
 367 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
 368 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
 369 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
 370 KernelVersion:  2.6.35
 371 Contact:        linux-iio@vger.kernel.org
 372 Description:
 373                 Hardware applied calibration scale factor (assumed to fix
 374                 production inaccuracies).  If shared across all channels,
 375                 <type>_calibscale is used.
 376
 377 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
 378 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
 379 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
 380 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
 381 KernelVersion:  4.0
 382 Contact:        linux-iio@vger.kernel.org
 383 Description:
 384                 Gender of the user (e.g.: male, female) used by some pedometers
 385                 to compute the stride length, distance, speed and activity
 386                 type.
 387
 388 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
 389 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
 390 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
 391 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
 392 KernelVersion:  4.0
 393 Contact:        linux-iio@vger.kernel.org
 394 Description:
 395                 Lists all available gender values (e.g.: male, female).
 396
 397 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
 398 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
 399 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
 400 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
 401 KernelVersion:  3.19
 402 Contact:        linux-iio@vger.kernel.org
 403 Description:
 404                 Height of the user (in meters) used by some pedometers
 405                 to compute the stride length, distance, speed and activity
 406                 type.
 407
 408 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
 409 KernelVersion:  4.0
 410 Contact:        linux-iio@vger.kernel.org
 411 Description:
 412                 Weight of the user (in kg). It is needed by some pedometers
 413                 to compute the calories burnt by the user.
 414
 415 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
 416 What:           /sys/.../iio:deviceX/in_voltageX_scale_available
 417 What:           /sys/.../iio:deviceX/in_voltage-voltage_scale_available
 418 What:           /sys/.../iio:deviceX/out_voltageX_scale_available
 419 What:           /sys/.../iio:deviceX/out_altvoltageX_scale_available
 420 What:           /sys/.../iio:deviceX/in_capacitance_scale_available
 421 What:           /sys/.../iio:deviceX/in_pressure_scale_available
 422 What:           /sys/.../iio:deviceX/in_pressureY_scale_available
 423 KernelVersion:  2.6.35
 424 Contact:        linux-iio@vger.kernel.org
 425 Description:
 426                 If a discrete set of scale values is available, they
 427                 are listed in this attribute.
 428
 429 What            /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
 430 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
 431 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
 432 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
 433 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
 434 KernelVersion:  2.6.35
 435 Contact:        linux-iio@vger.kernel.org
 436 Description:
 437                 Hardware applied gain factor. If shared across all channels,
 438                 <type>_hardwaregain is used.
 439
 440 What:           /sys/.../in_accel_filter_low_pass_3db_frequency
 441 What:           /sys/.../in_magn_filter_low_pass_3db_frequency
 442 What:           /sys/.../in_anglvel_filter_low_pass_3db_frequency
 443 KernelVersion:  3.2
 444 Contact:        linux-iio@vger.kernel.org
 445 Description:
 446                 If a known or controllable low pass filter is applied
 447                 to the underlying data channel, then this parameter
 448                 gives the 3dB frequency of the filter in Hz.
 449
 450 What:           /sys/.../in_accel_filter_high_pass_3db_frequency
 451 What:           /sys/.../in_anglvel_filter_high_pass_3db_frequency
 452 What:           /sys/.../in_magn_filter_high_pass_3db_frequency
 453 KernelVersion:  4.2
 454 Contact:        linux-iio@vger.kernel.org
 455 Description:
 456                 If a known or controllable high pass filter is applied
 457                 to the underlying data channel, then this parameter
 458                 gives the 3dB frequency of the filter in Hz.
 459
 460 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
 461 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
 462 KernelVersion:  2.6.37
 463 Contact:        linux-iio@vger.kernel.org
 464 Description:
 465                 Raw (unscaled, no bias etc.) output voltage for
 466                 channel Y.  The number must always be specified and
 467                 unique if the output corresponds to a single channel.
 468                 While DAC like devices typically use out_voltage,
 469                 a continuous frequency generating device, such as
 470                 a DDS or PLL should use out_altvoltage.
 471
 472 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
 473 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
 474 KernelVersion:  2.6.37
 475 Contact:        linux-iio@vger.kernel.org
 476 Description:
 477                 Raw (unscaled, no bias etc.) output voltage for an aggregate of
 478                 channel Y, channel Z, etc.  This interface is available in cases
 479                 where a single output sets the value for multiple channels
 480                 simultaneously.
 481
 482 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
 483 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
 484 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
 485 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
 486 KernelVersion:  2.6.38
 487 Contact:        linux-iio@vger.kernel.org
 488 Description:
 489                 Specifies the output powerdown mode.
 490                 DAC output stage is disconnected from the amplifier and
 491                 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
 492                 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
 493                 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
 494                 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
 495                 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
 496                 three_state: left floating.
 497                 For a list of available output power down options read
 498                 outX_powerdown_mode_available. If Y is not present the
 499                 mode is shared across all outputs.
 500
 501 What:           /sys/.../iio:deviceX/out_votlageY_powerdown_mode_available
 502 What:           /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
 503 What:           /sys/.../iio:deviceX/out_altvotlageY_powerdown_mode_available
 504 What:           /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
 505 KernelVersion:  2.6.38
 506 Contact:        linux-iio@vger.kernel.org
 507 Description:
 508                 Lists all available output power down modes.
 509                 If Y is not present the mode is shared across all outputs.
 510
 511 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
 512 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
 513 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
 514 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
 515 KernelVersion:  2.6.38
 516 Contact:        linux-iio@vger.kernel.org
 517 Description:
 518                 Writing 1 causes output Y to enter the power down mode specified
 519                 by the corresponding outY_powerdown_mode. DAC output stage is
 520                 disconnected from the amplifier. Clearing returns to normal
 521                 operation. Y may be suppressed if all outputs are controlled
 522                 together.
 523
 524 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
 525 KernelVersion:  3.4.0
 526 Contact:        linux-iio@vger.kernel.org
 527 Description:
 528                 Output frequency for channel Y in Hz. The number must always be
 529                 specified and unique if the output corresponds to a single
 530                 channel.
 531
 532 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
 533 KernelVersion:  3.4.0
 534 Contact:        linux-iio@vger.kernel.org
 535 Description:
 536                 Phase in radians of one frequency/clock output Y
 537                 (out_altvoltageY) relative to another frequency/clock output
 538                 (out_altvoltageZ) of the device X. The number must always be
 539                 specified and unique if the output corresponds to a single
 540                 channel.
 541
 542 What:           /sys/bus/iio/devices/iio:deviceX/events
 543 KernelVersion:  2.6.35
 544 Contact:        linux-iio@vger.kernel.org
 545 Description:
 546                 Configuration of which hardware generated events are passed up
 547                 to user-space.
 548
 549 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
 550 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
 551 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
 552 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
 553 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
 554 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
 555 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
 556 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
 557 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
 558 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
 559 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
 560 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
 561 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
 562 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
 563 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
 564 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
 565 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
 566 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
 567 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
 568 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
 569 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
 570 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
 571 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
 572 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
 573 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
 574 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
 575 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
 576 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
 577 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
 578 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
 579 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
 580 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
 581 KernelVersion:  2.6.37
 582 Contact:        linux-iio@vger.kernel.org
 583 Description:
 584                 Event generated when channel passes a threshold in the specified
 585                 (_rising|_falling) direction. If the direction is not specified,
 586                 then either the device will report an event which ever direction
 587                 a single threshold value is passed in (e.g.
 588                 <type>[Y][_name]_<raw|input>_thresh_value) or
 589                 <type>[Y][_name]_<raw|input>_thresh_rising_value and
 590                 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
 591                 different values, but the device can only enable both thresholds
 592                 or neither.
 593                 Note the driver will assume the last p events requested are
 594                 to be enabled where p is how many it supports (which may vary
 595                 depending on the exact set requested. So if you want to be
 596                 sure you have set what you think you have, check the contents of
 597                 these attributes after everything is configured. Drivers may
 598                 have to buffer any parameters so that they are consistent when
 599                 a given event type is enabled at a future point (and not those for
 600                 whatever event was previously enabled).
 601
 602 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
 603 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
 604 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
 605 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
 606 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
 607 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
 608 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
 609 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
 610 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
 611 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
 612 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
 613 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
 614 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
 615 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
 616 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
 617 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
 618 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
 619 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
 620 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
 621 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
 622 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
 623 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
 624 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
 625 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
 626 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
 627 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
 628 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
 629 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
 630 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
 631 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
 632 What:           /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
 633 What:           /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
 634 KernelVersion:  2.6.37
 635 Contact:        linux-iio@vger.kernel.org
 636 Description:
 637                 Event generated when channel passes a threshold on the rate of
 638                 change (1st differential) in the specified (_rising|_falling)
 639                 direction. If the direction is not specified, then either the
 640                 device will report an event which ever direction a single
 641                 threshold value is passed in (e.g.
 642                 <type>[Y][_name]_<raw|input>_roc_value) or
 643                 <type>[Y][_name]_<raw|input>_roc_rising_value and
 644                 <type>[Y][_name]_<raw|input>_roc_falling_value may take
 645                 different values, but the device can only enable both rate of
 646                 change thresholds or neither.
 647                 Note the driver will assume the last p events requested are
 648                 to be enabled where p is however many it supports (which may
 649                 vary depending on the exact set requested. So if you want to be
 650                 sure you have set what you think you have, check the contents of
 651                 these attributes after everything is configured. Drivers may
 652                 have to buffer any parameters so that they are consistent when
 653                 a given event type is enabled a future point (and not those for
 654                 whatever event was previously enabled).
 655
 656 What:           /sys/.../events/in_accel_thresh_rising_value
 657 What:           /sys/.../events/in_accel_thresh_falling_value
 658 What:           /sys/.../events/in_accel_x_raw_thresh_rising_value
 659 What:           /sys/.../events/in_accel_x_raw_thresh_falling_value
 660 What:           /sys/.../events/in_accel_y_raw_thresh_rising_value
 661 What:           /sys/.../events/in_accel_y_raw_thresh_falling_value
 662 What:           /sys/.../events/in_accel_z_raw_thresh_rising_value
 663 What:           /sys/.../events/in_accel_z_raw_thresh_falling_value
 664 What:           /sys/.../events/in_anglvel_x_raw_thresh_rising_value
 665 What:           /sys/.../events/in_anglvel_x_raw_thresh_falling_value
 666 What:           /sys/.../events/in_anglvel_y_raw_thresh_rising_value
 667 What:           /sys/.../events/in_anglvel_y_raw_thresh_falling_value
 668 What:           /sys/.../events/in_anglvel_z_raw_thresh_rising_value
 669 What:           /sys/.../events/in_anglvel_z_raw_thresh_falling_value
 670 What:           /sys/.../events/in_magn_x_raw_thresh_rising_value
 671 What:           /sys/.../events/in_magn_x_raw_thresh_falling_value
 672 What:           /sys/.../events/in_magn_y_raw_thresh_rising_value
 673 What:           /sys/.../events/in_magn_y_raw_thresh_falling_value
 674 What:           /sys/.../events/in_magn_z_raw_thresh_rising_value
 675 What:           /sys/.../events/in_magn_z_raw_thresh_falling_value
 676 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
 677 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
 678 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
 679 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
 680 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
 681 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
 682 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
 683 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
 684 What:           /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
 685 What:           /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
 686 What:           /sys/.../events/in_voltageY_raw_thresh_rising_value
 687 What:           /sys/.../events/in_voltageY_raw_thresh_falling_value
 688 What:           /sys/.../events/in_tempY_raw_thresh_rising_value
 689 What:           /sys/.../events/in_tempY_raw_thresh_falling_value
 690 What:           /sys/.../events/in_illuminance0_thresh_falling_value
 691 what:           /sys/.../events/in_illuminance0_thresh_rising_value
 692 what:           /sys/.../events/in_proximity0_thresh_falling_value
 693 what:           /sys/.../events/in_proximity0_thresh_rising_value
 694 KernelVersion:  2.6.37
 695 Contact:        linux-iio@vger.kernel.org
 696 Description:
 697                 Specifies the value of threshold that the device is comparing
 698                 against for the events enabled by
 699                 <type>Y[_name]_thresh[_rising|falling]_en.
 700                 If separate attributes exist for the two directions, but
 701                 direction is not specified for this attribute, then a single
 702                 threshold value applies to both directions.
 703                 The raw or input element of the name indicates whether the
 704                 value is in raw device units or in processed units (as _raw
 705                 and _input do on sysfs direct channel read attributes).
 706
 707 What:           /sys/.../events/in_accel_scale
 708 What:           /sys/.../events/in_accel_peak_scale
 709 What:           /sys/.../events/in_anglvel_scale
 710 What:           /sys/.../events/in_magn_scale
 711 What:           /sys/.../events/in_rot_from_north_magnetic_scale
 712 What:           /sys/.../events/in_rot_from_north_true_scale
 713 What:           /sys/.../events/in_voltage_scale
 714 What:           /sys/.../events/in_voltage_supply_scale
 715 What:           /sys/.../events/in_temp_scale
 716 What:           /sys/.../events/in_illuminance_scale
 717 What:           /sys/.../events/in_proximity_scale
 718 KernelVersion:  3.21
 719 Contact:        linux-iio@vger.kernel.org
 720 Description:
 721                 Specifies the conversion factor from the standard units
 722                 to device specific units used to set the event trigger
 723                 threshold.
 724
 725 What:           /sys/.../events/in_accel_x_thresh_rising_hysteresis
 726 What:           /sys/.../events/in_accel_x_thresh_falling_hysteresis
 727 What:           /sys/.../events/in_accel_x_thresh_either_hysteresis
 728 What:           /sys/.../events/in_accel_y_thresh_rising_hysteresis
 729 What:           /sys/.../events/in_accel_y_thresh_falling_hysteresis
 730 What:           /sys/.../events/in_accel_y_thresh_either_hysteresis
 731 What:           /sys/.../events/in_accel_z_thresh_rising_hysteresis
 732 What:           /sys/.../events/in_accel_z_thresh_falling_hysteresis
 733 What:           /sys/.../events/in_accel_z_thresh_either_hysteresis
 734 What:           /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
 735 What:           /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
 736 What:           /sys/.../events/in_anglvel_x_thresh_either_hysteresis
 737 What:           /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
 738 What:           /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
 739 What:           /sys/.../events/in_anglvel_y_thresh_either_hysteresis
 740 What:           /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
 741 What:           /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
 742 What:           /sys/.../events/in_anglvel_z_thresh_either_hysteresis
 743 What:           /sys/.../events/in_magn_x_thresh_rising_hysteresis
 744 What:           /sys/.../events/in_magn_x_thresh_falling_hysteresis
 745 What:           /sys/.../events/in_magn_x_thresh_either_hysteresis
 746 What:           /sys/.../events/in_magn_y_thresh_rising_hysteresis
 747 What:           /sys/.../events/in_magn_y_thresh_falling_hysteresis
 748 What:           /sys/.../events/in_magn_y_thresh_either_hysteresis
 749 What:           /sys/.../events/in_magn_z_thresh_rising_hysteresis
 750 What:           /sys/.../events/in_magn_z_thresh_falling_hysteresis
 751 What:           /sys/.../events/in_magn_z_thresh_either_hysteresis
 752 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
 753 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
 754 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
 755 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
 756 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
 757 What:           /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
 758 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
 759 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
 760 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
 761 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
 762 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
 763 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
 764 What:           /sys/.../events/in_voltageY_thresh_rising_hysteresis
 765 What:           /sys/.../events/in_voltageY_thresh_falling_hysteresis
 766 What:           /sys/.../events/in_voltageY_thresh_either_hysteresis
 767 What:           /sys/.../events/in_tempY_thresh_rising_hysteresis
 768 What:           /sys/.../events/in_tempY_thresh_falling_hysteresis
 769 What:           /sys/.../events/in_tempY_thresh_either_hysteresis
 770 What:           /sys/.../events/in_illuminance0_thresh_falling_hysteresis
 771 what:           /sys/.../events/in_illuminance0_thresh_rising_hysteresis
 772 what:           /sys/.../events/in_illuminance0_thresh_either_hysteresis
 773 what:           /sys/.../events/in_proximity0_thresh_falling_hysteresis
 774 what:           /sys/.../events/in_proximity0_thresh_rising_hysteresis
 775 what:           /sys/.../events/in_proximity0_thresh_either_hysteresis
 776 KernelVersion:  3.13
 777 Contact:        linux-iio@vger.kernel.org
 778 Description:
 779                 Specifies the hysteresis of threshold that the device is comparing
 780                 against for the events enabled by
 781                 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
 782                 If separate attributes exist for the two directions, but
 783                 direction is not specified for this attribute, then a single
 784                 hysteresis value applies to both directions.
 785                 For falling events the hysteresis is added to the _value attribute for
 786                 this event to get the upper threshold for when the event goes back to
 787                 normal, for rising events the hysteresis is subtracted from the _value
 788                 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
 789                 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
 790                 will get activated once in_voltage0_raw goes above 1200 and will become
 791                 deactived again once the value falls below 1150.
 792
 793 What:           /sys/.../events/in_accel_x_raw_roc_rising_value
 794 What:           /sys/.../events/in_accel_x_raw_roc_falling_value
 795 What:           /sys/.../events/in_accel_y_raw_roc_rising_value
 796 What:           /sys/.../events/in_accel_y_raw_roc_falling_value
 797 What:           /sys/.../events/in_accel_z_raw_roc_rising_value
 798 What:           /sys/.../events/in_accel_z_raw_roc_falling_value
 799 What:           /sys/.../events/in_anglvel_x_raw_roc_rising_value
 800 What:           /sys/.../events/in_anglvel_x_raw_roc_falling_value
 801 What:           /sys/.../events/in_anglvel_y_raw_roc_rising_value
 802 What:           /sys/.../events/in_anglvel_y_raw_roc_falling_value
 803 What:           /sys/.../events/in_anglvel_z_raw_roc_rising_value
 804 What:           /sys/.../events/in_anglvel_z_raw_roc_falling_value
 805 What:           /sys/.../events/in_magn_x_raw_roc_rising_value
 806 What:           /sys/.../events/in_magn_x_raw_roc_falling_value
 807 What:           /sys/.../events/in_magn_y_raw_roc_rising_value
 808 What:           /sys/.../events/in_magn_y_raw_roc_falling_value
 809 What:           /sys/.../events/in_magn_z_raw_roc_rising_value
 810 What:           /sys/.../events/in_magn_z_raw_roc_falling_value
 811 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
 812 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
 813 What:           /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
 814 What:           /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
 815 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
 816 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
 817 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
 818 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
 819 What:           /sys/.../events/in_voltageY_supply_raw_roc_rising_value
 820 What:           /sys/.../events/in_voltageY_supply_raw_roc_falling_value
 821 What:           /sys/.../events/in_voltageY_raw_roc_rising_value
 822 What:           /sys/.../events/in_voltageY_raw_roc_falling_value
 823 What:           /sys/.../events/in_tempY_raw_roc_rising_value
 824 What:           /sys/.../events/in_tempY_raw_roc_falling_value
 825 KernelVersion:  2.6.37
 826 Contact:        linux-iio@vger.kernel.org
 827 Description:
 828                 Specifies the value of rate of change threshold that the
 829                 device is comparing against for the events enabled by
 830                 <type>[Y][_name]_roc[_rising|falling]_en.
 831                 If separate attributes exist for the two directions,
 832                 but direction is not specified for this attribute,
 833                 then a single threshold value applies to both directions.
 834                 The raw or input element of the name indicates whether the
 835                 value is in raw device units or in processed units (as _raw
 836                 and _input do on sysfs direct channel read attributes).
 837
 838 What:           /sys/.../events/in_accel_x_thresh_rising_period
 839 What:           /sys/.../events/in_accel_x_thresh_falling_period
 840 What:           /sys/.../events/in_accel_x_roc_rising_period
 841 What:           /sys/.../events/in_accel_x_roc_falling_period
 842 What:           /sys/.../events/in_accel_y_thresh_rising_period
 843 What:           /sys/.../events/in_accel_y_thresh_falling_period
 844 What:           /sys/.../events/in_accel_y_roc_rising_period
 845 What:           /sys/.../events/in_accel_y_roc_falling_period
 846 What:           /sys/.../events/in_accel_z_thresh_rising_period
 847 What:           /sys/.../events/in_accel_z_thresh_falling_period
 848 What:           /sys/.../events/in_accel_z_roc_rising_period
 849 What:           /sys/.../events/in_accel_z_roc_falling_period
 850 What:           /sys/.../events/in_anglvel_x_thresh_rising_period
 851 What:           /sys/.../events/in_anglvel_x_thresh_falling_period
 852 What:           /sys/.../events/in_anglvel_x_roc_rising_period
 853 What:           /sys/.../events/in_anglvel_x_roc_falling_period
 854 What:           /sys/.../events/in_anglvel_y_thresh_rising_period
 855 What:           /sys/.../events/in_anglvel_y_thresh_falling_period
 856 What:           /sys/.../events/in_anglvel_y_roc_rising_period
 857 What:           /sys/.../events/in_anglvel_y_roc_falling_period
 858 What:           /sys/.../events/in_anglvel_z_thresh_rising_period
 859 What:           /sys/.../events/in_anglvel_z_thresh_falling_period
 860 What:           /sys/.../events/in_anglvel_z_roc_rising_period
 861 What:           /sys/.../events/in_anglvel_z_roc_falling_period
 862 What:           /sys/.../events/in_magn_x_thresh_rising_period
 863 What:           /sys/.../events/in_magn_x_thresh_falling_period
 864 What:           /sys/.../events/in_magn_x_roc_rising_period
 865 What:           /sys/.../events/in_magn_x_roc_falling_period
 866 What:           /sys/.../events/in_magn_y_thresh_rising_period
 867 What:           /sys/.../events/in_magn_y_thresh_falling_period
 868 What:           /sys/.../events/in_magn_y_roc_rising_period
 869 What:           /sys/.../events/in_magn_y_roc_falling_period
 870 What:           /sys/.../events/in_magn_z_thresh_rising_period
 871 What:           /sys/.../events/in_magn_z_thresh_falling_period
 872 What:           /sys/.../events/in_magn_z_roc_rising_period
 873 What:           /sys/.../events/in_magn_z_roc_falling_period
 874 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
 875 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
 876 What:           /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
 877 What:           /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
 878 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_period
 879 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_period
 880 What:           /sys/.../events/in_rot_from_north_true_roc_rising_period
 881 What:           /sys/.../events/in_rot_from_north_true_roc_falling_period
 882 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
 883 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
 884 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
 885 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
 886 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
 887 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
 888 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
 889 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
 890 What:           /sys/.../events/in_voltageY_supply_thresh_rising_period
 891 What:           /sys/.../events/in_voltageY_supply_thresh_falling_period
 892 What:           /sys/.../events/in_voltageY_supply_roc_rising_period
 893 What:           /sys/.../events/in_voltageY_supply_roc_falling_period
 894 What:           /sys/.../events/in_voltageY_thresh_rising_period
 895 What:           /sys/.../events/in_voltageY_thresh_falling_period
 896 What:           /sys/.../events/in_voltageY_roc_rising_period
 897 What:           /sys/.../events/in_voltageY_roc_falling_period
 898 What:           /sys/.../events/in_tempY_thresh_rising_period
 899 What:           /sys/.../events/in_tempY_thresh_falling_period
 900 What:           /sys/.../events/in_tempY_roc_rising_period
 901 What:           /sys/.../events/in_tempY_roc_falling_period
 902 What:           /sys/.../events/in_accel_x&y&z_mag_falling_period
 903 What:           /sys/.../events/in_intensity0_thresh_period
 904 What:           /sys/.../events/in_proximity0_thresh_period
 905 What:           /sys/.../events/in_activity_still_thresh_rising_period
 906 What:           /sys/.../events/in_activity_still_thresh_falling_period
 907 What:           /sys/.../events/in_activity_walking_thresh_rising_period
 908 What:           /sys/.../events/in_activity_walking_thresh_falling_period
 909 What:           /sys/.../events/in_activity_jogging_thresh_rising_period
 910 What:           /sys/.../events/in_activity_jogging_thresh_falling_period
 911 What:           /sys/.../events/in_activity_running_thresh_rising_period
 912 What:           /sys/.../events/in_activity_running_thresh_falling_period
 913 KernelVersion:  2.6.37
 914 Contact:        linux-iio@vger.kernel.org
 915 Description:
 916                 Period of time (in seconds) for which the condition must be
 917                 met before an event is generated. If direction is not
 918                 specified then this period applies to both directions.
 919
 920 What:           /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
 921 What:           /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
 922 What:           /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
 923 KernelVersion:  4.2
 924 Contact:        linux-iio@vger.kernel.org
 925 Description:
 926                 If a low pass filter can be applied to the event generation
 927                 this property gives its 3db frequency in Hz.
 928                 A value of zero disables the filter.
 929
 930 What:           /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
 931 What:           /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
 932 What:           /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
 933 KernelVersion:  4.2
 934 Contact:        linux-iio@vger.kernel.org
 935 Description:
 936                 If a high pass filter can be applied to the event generation
 937                 this property gives its 3db frequency in Hz.
 938                 A value of zero disables the filter.
 939
 940 What:           /sys/.../events/in_activity_still_thresh_rising_en
 941 What:           /sys/.../events/in_activity_still_thresh_falling_en
 942 What:           /sys/.../events/in_activity_walking_thresh_rising_en
 943 What:           /sys/.../events/in_activity_walking_thresh_falling_en
 944 What:           /sys/.../events/in_activity_jogging_thresh_rising_en
 945 What:           /sys/.../events/in_activity_jogging_thresh_falling_en
 946 What:           /sys/.../events/in_activity_running_thresh_rising_en
 947 What:           /sys/.../events/in_activity_running_thresh_falling_en
 948 KernelVersion:  3.19
 949 Contact:        linux-iio@vger.kernel.org
 950 Description:
 951                 Enables or disables activitity events. Depending on direction
 952                 an event is generated when sensor ENTERS or LEAVES a given state.
 953
 954 What:           /sys/.../events/in_activity_still_thresh_rising_value
 955 What:           /sys/.../events/in_activity_still_thresh_falling_value
 956 What:           /sys/.../events/in_activity_walking_thresh_rising_value
 957 What:           /sys/.../events/in_activity_walking_thresh_falling_value
 958 What:           /sys/.../events/in_activity_jogging_thresh_rising_value
 959 What:           /sys/.../events/in_activity_jogging_thresh_falling_value
 960 What:           /sys/.../events/in_activity_running_thresh_rising_value
 961 What:           /sys/.../events/in_activity_running_thresh_falling_value
 962 KernelVersion:  3.19
 963 Contact:        linux-iio@vger.kernel.org
 964 Description:
 965                 Confidence value (in units as percentage) to be used
 966                 for deciding when an event should be generated. E.g for
 967                 running: If the confidence value reported by the sensor
 968                 is greater than in_activity_running_thresh_rising_value
 969                 then the sensor ENTERS running state. Conversely, if the
 970                 confidence value reported by the sensor is lower than
 971                 in_activity_running_thresh_falling_value then the sensor
 972                 is LEAVING running state.
 973
 974 What:           /sys/.../iio:deviceX/events/in_accel_mag_en
 975 What:           /sys/.../iio:deviceX/events/in_accel_mag_rising_en
 976 What:           /sys/.../iio:deviceX/events/in_accel_mag_falling_en
 977 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_en
 978 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
 979 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
 980 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_en
 981 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
 982 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
 983 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_en
 984 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
 985 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
 986 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
 987 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
 988 KernelVersion:  2.6.37
 989 Contact:        linux-iio@vger.kernel.org
 990 Description:
 991                 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
 992                 magnitude of the channel is compared to the threshold, not its
 993                 signed value.
 994
 995 What:           /sys/.../events/in_accel_raw_mag_value
 996 What:           /sys/.../events/in_accel_x_raw_mag_rising_value
 997 What:           /sys/.../events/in_accel_y_raw_mag_rising_value
 998 What:           /sys/.../events/in_accel_z_raw_mag_rising_value
 999 KernelVersion:  2.6.37
1000 Contact:        linux-iio@vger.kernel.org
1001 Description:
1002                 The value to which the magnitude of the channel is compared. If
1003                 number or direction is not specified, applies to all channels of
1004                 this type.
1005
1006 What:           /sys/.../events/in_steps_change_en
1007 KernelVersion:  4.0
1008 Contact:        linux-iio@vger.kernel.org
1009 Description:
1010                 Event generated when channel passes a threshold on the absolute
1011                 change in value. E.g. for steps: a step change event is
1012                 generated each time the user takes N steps, where N is set using
1013                 in_steps_change_value.
1014
1015 What:           /sys/.../events/in_steps_change_value
1016 KernelVersion:  4.0
1017 Contact:        linux-iio@vger.kernel.org
1018 Description:
1019                 Specifies the value of change threshold that the
1020                 device is comparing against for the events enabled by
1021                 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1022                 if set to 3, a step change event will be generated every 3
1023                 steps.
1024
1025 What:           /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1026 KernelVersion:  2.6.35
1027 Contact:        linux-iio@vger.kernel.org
1028 Description:
1029                 The name of the trigger source being used, as per string given
1030                 in /sys/class/iio/triggerY/name.
1031
1032 What:           /sys/bus/iio/devices/iio:deviceX/buffer/length
1033 KernelVersion:  2.6.35
1034 Contact:        linux-iio@vger.kernel.org
1035 Description:
1036                 Number of scans contained by the buffer.
1037
1038 What:           /sys/bus/iio/devices/iio:deviceX/buffer/bytes_per_datum
1039 KernelVersion:  2.6.37
1040 Contact:        linux-iio@vger.kernel.org
1041 Description:
1042                 Bytes per scan.  Due to alignment fun, the scan may be larger
1043                 than implied directly by the scan_element parameters.
1044
1045 What:           /sys/bus/iio/devices/iio:deviceX/buffer/enable
1046 KernelVersion:  2.6.35
1047 Contact:        linux-iio@vger.kernel.org
1048 Description:
1049                 Actually start the buffer capture up.  Will start trigger
1050                 if first device and appropriate.
1051
1052 What:           /sys/bus/iio/devices/iio:deviceX/scan_elements
1053 KernelVersion:  2.6.37
1054 Contact:        linux-iio@vger.kernel.org
1055 Description:
1056                 Directory containing interfaces for elements that will be
1057                 captured for a single triggered sample set in the buffer.
1058
1059 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1060 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1061 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1062 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1063 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1064 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1065 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1066 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1067 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1068 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1069 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1070 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1071 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1072 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1073 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1074 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1075 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1076 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1077 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1078 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1079 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1080 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1081 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1082 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1083 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_en
1084 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1085 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_en
1086 KernelVersion:  2.6.37
1087 Contact:        linux-iio@vger.kernel.org
1088 Description:
1089                 Scan element control for triggered data capture.
1090
1091 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type
1092 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1093 What:           /sys/.../iio:deviceX/scan_elements/in_magn_type
1094 What:           /sys/.../iio:deviceX/scan_elements/in_incli_type
1095 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1096 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_type
1097 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1098 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1099 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1100 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1101 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1102 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1103 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1104 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_type
1105 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1106 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_type
1107 KernelVersion:  2.6.37
1108 Contact:        linux-iio@vger.kernel.org
1109 Description:
1110                 Description of the scan element data storage within the buffer
1111                 and hence the form in which it is read from user-space.
1112                 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1113                 be or le specifies big or little endian. s or u specifies if
1114                 signed (2's complement) or unsigned. bits is the number of bits
1115                 of data and storagebits is the space (after padding) that it
1116                 occupies in the buffer. shift if specified, is the shift that
1117                 needs to be applied prior to masking out unused bits. Some
1118                 devices put their data in the middle of the transferred elements
1119                 with additional information on both sides.  Note that some
1120                 devices will have additional information in the unused bits
1121                 so to get a clean value, the bits value must be used to mask
1122                 the buffer output value appropriately.  The storagebits value
1123                 also specifies the data alignment.  So s48/64>>2 will be a
1124                 signed 48 bit integer stored in a 64 bit location aligned to
1125                 a 64 bit boundary. To obtain the clean value, shift right 2
1126                 and apply a mask to zero the top 16 bits of the result.
1127                 For other storage combinations this attribute will be extended
1128                 appropriately.
1129
1130 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1131 KernelVersion:  2.6.37
1132 Contact:        linux-iio@vger.kernel.org
1133 Description:
1134                 If the type parameter can take one of a small set of values,
1135                 this attribute lists them.
1136
1137 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1138 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1139 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1140 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1141 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1142 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1143 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1144 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1145 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1146 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1147 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1148 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1149 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1150 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1151 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1152 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1153 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1154 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1155 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1156 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1157 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1158 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1159 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1160 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_index
1161 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1162 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_index
1163 KernelVersion:  2.6.37
1164 Contact:        linux-iio@vger.kernel.org
1165 Description:
1166                 A single positive integer specifying the position of this
1167                 scan element in the buffer. Note these are not dependent on
1168                 what is enabled and may not be contiguous. Thus for user-space
1169                 to establish the full layout these must be used in conjunction
1170                 with all _en attributes to establish which channels are present,
1171                 and the relevant _type attributes to establish the data storage
1172                 format.
1173
1174 What:           /sys/.../iio:deviceX/in_activity_still_input
1175 What:           /sys/.../iio:deviceX/in_activity_walking_input
1176 What:           /sys/.../iio:deviceX/in_activity_jogging_input
1177 What:           /sys/.../iio:deviceX/in_activity_running_input
1178 KernelVersion:  3.19
1179 Contact:        linux-iio@vger.kernel.org
1180 Description:
1181                 This attribute is used to read the confidence for an activity
1182                 expressed in units as percentage.
1183
1184 What:           /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1185 KernelVersion:  2.6.38
1186 Contact:        linux-iio@vger.kernel.org
1187 Description:
1188                 This attribute is used to read the amount of quadrature error
1189                 present in the device at a given time.
1190
1191 What:           /sys/.../iio:deviceX/in_accelX_power_mode
1192 KernelVersion:  3.11
1193 Contact:        linux-iio@vger.kernel.org
1194 Description:
1195                 Specifies the chip power mode.
1196                 low_noise: reduce noise level from ADC,
1197                 low_power: enable low current consumption.
1198                 For a list of available output power modes read
1199                 in_accel_power_mode_available.
1200
1201 What:           /sys/.../iio:deviceX/in_energy_input
1202 What:           /sys/.../iio:deviceX/in_energy_raw
1203 KernelVersion:  4.0
1204 Contact:        linux-iio@vger.kernel.org
1205 Description:
1206                 This attribute is used to read the energy value reported by the
1207                 device (e.g.: human activity sensors report energy burnt by the
1208                 user). Units after application of scale are Joules.
1209
1210 What:           /sys/.../iio:deviceX/in_distance_input
1211 What:           /sys/.../iio:deviceX/in_distance_raw
1212 KernelVersion:  4.0
1213 Contact:        linux-iio@vger.kernel.org
1214 Description:
1215                 This attribute is used to read the distance covered by the user
1216                 since the last reboot while activated. Units after application
1217                 of scale are meters.
1218
1219 What:           /sys/bus/iio/devices/iio:deviceX/store_eeprom
1220 KernelVersion:  3.4.0
1221 Contact:        linux-iio@vger.kernel.org
1222 Description:
1223                 Writing '1' stores the current device configuration into
1224                 on-chip EEPROM. After power-up or chip reset the device will
1225                 automatically load the saved configuration.
1226
1227 What:           /sys/.../iio:deviceX/in_proximity_raw
1228 What:           /sys/.../iio:deviceX/in_proximity_input
1229 What:           /sys/.../iio:deviceX/in_proximityY_raw
1230 KernelVersion:  3.4
1231 Contact:        linux-iio@vger.kernel.org
1232 Description:
1233                 Proximity measurement indicating that some
1234                 object is near the sensor, usually be observing
1235                 reflectivity of infrared or ultrasound emitted.
1236                 Often these sensors are unit less and as such conversion
1237                 to SI units is not possible.  Where it is, the units should
1238                 be meters.  If such a conversion is not possible, the reported
1239                 values should behave in the same way as a distance, i.e. lower
1240                 values indicate something is closer to the sensor.
1241
1242 What:           /sys/.../iio:deviceX/in_illuminance_input
1243 What:           /sys/.../iio:deviceX/in_illuminance_raw
1244 What:           /sys/.../iio:deviceX/in_illuminanceY_input
1245 What:           /sys/.../iio:deviceX/in_illuminanceY_raw
1246 What:           /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1247 What:           /sys/.../iio:deviceX/in_illuminance_ir_raw
1248 What:           /sys/.../iio:deviceX/in_illuminance_clear_raw
1249 KernelVersion:  3.4
1250 Contact:        linux-iio@vger.kernel.org
1251 Description:
1252                 Illuminance measurement, units after application of scale
1253                 and offset are lux.
1254
1255 What:           /sys/.../iio:deviceX/in_intensityY_raw
1256 What:           /sys/.../iio:deviceX/in_intensityY_ir_raw
1257 What:           /sys/.../iio:deviceX/in_intensityY_both_raw
1258 KernelVersion:  3.4
1259 Contact:        linux-iio@vger.kernel.org
1260 Description:
1261                 Unit-less light intensity. Modifiers both and ir indicate
1262                 that measurements contains visible and infrared light
1263                 components or just infrared light, respectively.
1264
1265 What:           /sys/.../iio:deviceX/in_intensity_red_integration_time
1266 What:           /sys/.../iio:deviceX/in_intensity_green_integration_time
1267 What:           /sys/.../iio:deviceX/in_intensity_blue_integration_time
1268 What:           /sys/.../iio:deviceX/in_intensity_clear_integration_time
1269 What:           /sys/.../iio:deviceX/in_illuminance_integration_time
1270 KernelVersion:  3.12
1271 Contact:        linux-iio@vger.kernel.org
1272 Description:
1273                 This attribute is used to get/set the integration time in
1274                 seconds.
1275
1276 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1277 KernelVersion:  4.0
1278 Contact:        linux-iio@vger.kernel.org
1279 Description:
1280                 Number of seconds in which to compute speed.
1281
1282 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1283 KernelVersion:  3.15
1284 Contact:        linux-iio@vger.kernel.org
1285 Description:
1286                 Raw value of quaternion components using a format
1287                 x y z w. Here x, y, and z component represents the axis about
1288                 which a rotation will occur and w component represents the
1289                 amount of rotation.
1290
1291 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1292 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1293 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1294 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1295 KernelVersion:  3.15
1296 Contact:        linux-iio@vger.kernel.org
1297 Description:
1298                 Raw value of rotation from true/magnetic north measured with
1299                 or without compensation from tilt sensors.
1300
1301 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1302 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1303 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1304 KernelVersion:  3.18
1305 Contact:        linux-iio@vger.kernel.org
1306 Description:
1307                 Raw current measurement from channel X. Units are in milliamps
1308                 after application of scale and offset. If no offset or scale is
1309                 present, output should be considered as processed with the
1310                 unit in milliamps.
1311
1312                 Channels with 'i' and 'q' modifiers always exist in pairs and both
1313                 channels refer to the same signal. The 'i' channel contains the in-phase
1314                 component of the signal while the 'q' channel contains the quadrature
1315                 component.
1316
1317 What:           /sys/.../iio:deviceX/in_energy_en
1318 What:           /sys/.../iio:deviceX/in_distance_en
1319 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1320 What:           /sys/.../iio:deviceX/in_steps_en
1321 KernelVersion:  3.19
1322 Contact:        linux-iio@vger.kernel.org
1323 Description:
1324                 Activates a device feature that runs in firmware/hardware.
1325                 E.g. for steps: the pedometer saves power while not used;
1326                 when activated, it will count the steps taken by the user in
1327                 firmware and export them through in_steps_input.
1328
1329 What:           /sys/.../iio:deviceX/in_steps_input
1330 KernelVersion:  3.19
1331 Contact:        linux-iio@vger.kernel.org
1332 Description:
1333                 This attribute is used to read the number of steps taken by the user
1334                 since the last reboot while activated.
1335
1336 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1337 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1338 KernelVersion:  3.19
1339 Contact:        linux-iio@vger.kernel.org
1340 Description:
1341                 This attribute is used to read the current speed value of the
1342                 user (which is the norm or magnitude of the velocity vector).
1343                 Units after application of scale are m/s.
1344
1345 What:           /sys/.../iio:deviceX/in_steps_debounce_count
1346 KernelVersion:  4.0
1347 Contact:        linux-iio@vger.kernel.org
1348 Description:
1349                 Specifies the number of steps that must occur within
1350                 in_steps_filter_debounce_time for the pedometer to decide the
1351                 consumer is making steps.
1352
1353 What:           /sys/.../iio:deviceX/in_steps_debounce_time
1354 KernelVersion:  4.0
1355 Contact:        linux-iio@vger.kernel.org
1356 Description:
1357                 Specifies number of seconds in which we compute the steps
1358                 that occur in order to decide if the consumer is making steps.
1359
1360 What:           /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1361 KernelVersion:  4.2
1362 Contact:        linux-iio@vger.kernel.org
1363 Description:
1364                 A single positive integer specifying the maximum number of scan
1365                 elements to wait for.
1366                 Poll will block until the watermark is reached.
1367                 Blocking read will wait until the minimum between the requested
1368                 read amount or the low water mark is available.
1369                 Non-blocking read will retrieve the available samples from the
1370                 buffer even if there are less samples then watermark level. This
1371                 allows the application to block on poll with a timeout and read
1372                 the available samples after the timeout expires and thus have a
1373                 maximum delay guarantee.
1374
1375 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1376 KernelVersion: 4.2
1377 Contact:        linux-iio@vger.kernel.org
1378 Description:
1379                 A read-only boolean value that indicates if the hardware fifo is
1380                 currently enabled or disabled. If the device does not have a
1381                 hardware fifo this entry is not present.
1382                 The hardware fifo is enabled when the buffer is enabled if the
1383                 current hardware fifo watermark level is set and other current
1384                 device settings allows it (e.g. if a trigger is set that samples
1385                 data differently that the hardware fifo does then hardware fifo
1386                 will not enabled).
1387                 If the hardware fifo is enabled and the level of the hardware
1388                 fifo reaches the hardware fifo watermark level the device will
1389                 flush its hardware fifo to the device buffer. Doing a non
1390                 blocking read on the device when no samples are present in the
1391                 device buffer will also force a flush.
1392                 When the hardware fifo is enabled there is no need to use a
1393                 trigger to use buffer mode since the watermark settings
1394                 guarantees that the hardware fifo is flushed to the device
1395                 buffer.
1396
1397 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1398 KernelVersion: 4.2
1399 Contact:        linux-iio@vger.kernel.org
1400 Description:
1401                 Read-only entry that contains a single integer specifying the
1402                 current watermark level for the hardware fifo. If the device
1403                 does not have a hardware fifo this entry is not present.
1404                 The watermark level for the hardware fifo is set by the driver
1405                 based on the value set by the user in buffer/watermark but
1406                 taking into account hardware limitations (e.g. most hardware
1407                 buffers are limited to 32-64 samples, some hardware buffers
1408                 watermarks are fixed or have minimum levels).  A value of 0
1409                 means that the hardware watermark is unset.
1410
1411 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1412 KernelVersion: 4.2
1413 Contact:       linux-iio@vger.kernel.org
1414 Description:
1415                 A single positive integer specifying the minimum watermark level
1416                 for the hardware fifo of this device. If the device does not
1417                 have a hardware fifo this entry is not present.
1418                 If the user sets buffer/watermark to a value less than this one,
1419                 then the hardware watermark will remain unset.
1420
1421 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1422 KernelVersion: 4.2
1423 Contact:       linux-iio@vger.kernel.org
1424 Description:
1425                 A single positive integer specifying the maximum watermark level
1426                 for the hardware fifo of this device. If the device does not
1427                 have a hardware fifo this entry is not present.
1428                 If the user sets buffer/watermark to a value greater than this
1429                 one, then the hardware watermark will be capped at this value.
1430
1431 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1432 KernelVersion: 4.2
1433 Contact:       linux-iio@vger.kernel.org
1434 Description:
1435                 A list of positive integers specifying the available watermark
1436                 levels for the hardware fifo. This entry is optional and if it
1437                 is not present it means that all the values between
1438                 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1439                 If the user sets buffer/watermark to a value greater than
1440                 hwfifo_watermak_min but not equal to any of the values in this
1441                 list, the driver will chose an appropriate value for the
1442                 hardware fifo watermark level.
1443
1444 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1445 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1446 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1447 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1448 KernelVersion:  4.1
1449 Contact:        linux-iio@vger.kernel.org
1450 Description:
1451                 The emissivity ratio of the surface in the field of view of the
1452                 contactless temperature sensor.  Emissivity varies from 0 to 1,
1453                 with 1 being the emissivity of a black body.
1454
1455 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1456 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1457 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1458 KernelVersion:  4.2
1459 Contact:        linux-iio@vger.kernel.org
1460 Description:
1461                 Hardware applied number of measurements for acquiring one
1462                 data point. The HW will do <type>[_name]_oversampling_ratio
1463                 measurements and return the average value as output data. Each
1464                 value resulted from <type>[_name]_oversampling_ratio measurements
1465                 is considered as one sample for <type>[_name]_sampling_frequency.