Documentation/ABI/testing/sysfs-bus-iio

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