1What: /sys/bus/iio/devices/iio:deviceX 2KernelVersion: 2.6.35 3Contact: linux-iio@vger.kernel.org 4Description: 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 9What: /sys/bus/iio/devices/triggerX 10KernelVersion: 2.6.35 11Contact: linux-iio@vger.kernel.org 12Description: 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 22What: /sys/bus/iio/devices/iio:deviceX/buffer 23KernelVersion: 2.6.35 24Contact: linux-iio@vger.kernel.org 25Description: 26 Directory of attributes relating to the buffer for the device. 27 28What: /sys/bus/iio/devices/iio:deviceX/name 29KernelVersion: 2.6.35 30Contact: linux-iio@vger.kernel.org 31Description: 32 Description of the physical chip / device for device X. 33 Typically a part number. 34 35What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency 36What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency 37What: /sys/bus/iio/devices/triggerX/sampling_frequency 38KernelVersion: 2.6.35 39Contact: linux-iio@vger.kernel.org 40Description: 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 50What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available 51What: /sys/.../iio:deviceX/buffer/sampling_frequency_available 52What: /sys/bus/iio/devices/triggerX/sampling_frequency_available 53KernelVersion: 2.6.35 54Contact: linux-iio@vger.kernel.org 55Description: 56 When the internal sampling clock can only take a small 57 discrete set of values, this file lists those available. 58 59What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio 60KernelVersion: 2.6.38 61Contact: linux-iio@vger.kernel.org 62Description: 63 Hardware dependent ADC oversampling. Controls the sampling ratio 64 of the digital filter if available. 65 66What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available 67KernelVersion: 2.6.38 68Contact: linux-iio@vger.kernel.org 69Description: 70 Hardware dependent values supported by the oversampling filter. 71 72What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw 73What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw 74KernelVersion: 2.6.35 75Contact: linux-iio@vger.kernel.org 76Description: 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 84What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw 85KernelVersion: 2.6.35 86Contact: linux-iio@vger.kernel.org 87Description: 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 95What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw 96What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw 97KernelVersion: 3.17 98Contact: linux-iio@vger.kernel.org 99Description: 100 Raw (unscaled no bias removal etc.) current measurement from 101 channel Y. In special cases where the channel does not 102 correspond to externally available input one of the named 103 versions may be used. The number must always be specified and 104 unique to allow association with event codes. Units after 105 application of scale and offset are milliamps. 106 107What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw 108KernelVersion: 3.2 109Contact: linux-iio@vger.kernel.org 110Description: 111 Raw capacitance measurement from channel Y. Units after 112 application of scale and offset are nanofarads. 113 114What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw 115KernelVersion: 3.2 116Contact: linux-iio@vger.kernel.org 117Description: 118 Raw differential capacitance measurement equivalent to 119 channel Y - channel Z where these channel numbers apply to the 120 physically equivalent inputs when non differential readings are 121 separately available. In differential only parts, then all that 122 is required is a consistent labeling. Units after application 123 of scale and offset are nanofarads. 124 125What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw 126What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw 127What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw 128What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw 129What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw 130What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw 131KernelVersion: 2.6.35 132Contact: linux-iio@vger.kernel.org 133Description: 134 Raw (unscaled no bias removal etc.) temperature measurement. 135 If an axis is specified it generally means that the temperature 136 sensor is associated with one part of a compound device (e.g. 137 a gyroscope axis). The ambient and object modifiers distinguish 138 between ambient (reference) and distant temperature for contact- 139 less measurements. Units after application of scale and offset 140 are milli degrees Celsius. 141 142What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input 143KernelVersion: 2.6.38 144Contact: linux-iio@vger.kernel.org 145Description: 146 Scaled temperature measurement in milli degrees Celsius. 147 148What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw 149What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw 150What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw 151KernelVersion: 2.6.35 152Contact: linux-iio@vger.kernel.org 153Description: 154 Acceleration in direction x, y or z (may be arbitrarily assigned 155 but should match other such assignments on device). 156 Has all of the equivalent parameters as per voltageY. Units 157 after application of scale and offset are m/s^2. 158 159What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw 160What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw 161What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw 162KernelVersion: 2.6.35 163Contact: linux-iio@vger.kernel.org 164Description: 165 Angular velocity about axis x, y or z (may be arbitrarily 166 assigned). Has all the equivalent parameters as per voltageY. 167 Units after application of scale and offset are radians per 168 second. 169 170What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw 171What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw 172What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw 173KernelVersion: 2.6.35 174Contact: linux-iio@vger.kernel.org 175Description: 176 Inclination raw reading about axis x, y or z (may be 177 arbitrarily assigned). Data converted by application of offset 178 and scale to degrees. 179 180What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw 181What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw 182What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw 183KernelVersion: 2.6.35 184Contact: linux-iio@vger.kernel.org 185Description: 186 Magnetic field along axis x, y or z (may be arbitrarily 187 assigned). Data converted by application of offset 188 then scale to Gauss. 189 190What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw 191What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw 192What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw 193KernelVersion: 2.6.36 194Contact: linux-iio@vger.kernel.org 195Description: 196 Highest value since some reset condition. These 197 attributes allow access to this and are otherwise 198 the direct equivalent of the <type>Y[_name]_raw attributes. 199 200What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw 201KernelVersion: 2.6.36 202Contact: linux-iio@vger.kernel.org 203Description: 204 A computed peak value based on the sum squared magnitude of 205 the underlying value in the specified directions. 206 207What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw 208What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw 209KernelVersion: 3.8 210Contact: linux-iio@vger.kernel.org 211Description: 212 Raw pressure measurement from channel Y. Units after 213 application of scale and offset are kilopascal. 214 215What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input 216What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input 217KernelVersion: 3.8 218Contact: linux-iio@vger.kernel.org 219Description: 220 Scaled pressure measurement from channel Y, in kilopascal. 221 222What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw 223KernelVersion: 3.14 224Contact: linux-iio@vger.kernel.org 225Description: 226 Raw humidity measurement of air. Units after application of 227 scale and offset are milli percent. 228 229What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input 230KernelVersion: 3.14 231Contact: linux-iio@vger.kernel.org 232Description: 233 Scaled humidity measurement in milli percent. 234 235What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw 236KernelVersion: 3.5 237Contact: linux-iio@vger.kernel.org 238Description: 239 Averaged raw measurement from channel X. The number of values 240 used for averaging is device specific. The converting rules for 241 normal raw values also applies to the averaged raw values. 242 243What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset 244What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset 245What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset 246What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset 247What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset 248What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset 249What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset 250What: /sys/bus/iio/devices/iio:deviceX/in_current_offset 251What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset 252What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset 253What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset 254What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset 255What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset 256What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset 257What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset 258KernelVersion: 2.6.35 259Contact: linux-iio@vger.kernel.org 260Description: 261 If known for a device, offset to be added to <type>[Y]_raw prior 262 to scaling by <type>[Y]_scale in order to obtain value in the 263 <type> units as specified in <type>[Y]_raw documentation. 264 Not present if the offset is always 0 or unknown. If Y or 265 axis <x|y|z> is not present, then the offset applies to all 266 in channels of <type>. 267 May be writable if a variable offset can be applied on the 268 device. Note that this is different to calibbias which 269 is for devices (or drivers) that apply offsets to compensate 270 for variation between different instances of the part, typically 271 adjusted by using some hardware supported calibration procedure. 272 Calibbias is applied internally, offset is applied in userspace 273 to the _raw output. 274 275What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale 276What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale 277What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale 278What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale 279What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale 280What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale 281What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale 282What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale 283What: /sys/bus/iio/devices/iio:deviceX/in_current_scale 284What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale 285What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale 286What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale 287What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale 288What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale 289What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale 290What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale 291What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale 292What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale 293What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale 294What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale 295What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale 296What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale 297What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale 298What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale 299What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale 300What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale 301What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale 302KernelVersion: 2.6.35 303Contact: linux-iio@vger.kernel.org 304Description: 305 If known for a device, scale to be applied to <type>Y[_name]_raw 306 post addition of <type>[Y][_name]_offset in order to obtain the 307 measured value in <type> units as specified in 308 <type>[Y][_name]_raw documentation. If shared across all in 309 channels then Y and <x|y|z> are not present and the value is 310 called <type>[Y][_name]_scale. The peak modifier means this 311 value is applied to <type>Y[_name]_peak_raw values. 312 313What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias 314What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias 315What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias 316What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias 317What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias 318What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias 319What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias 320What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias 321What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias 322What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias 323KernelVersion: 2.6.35 324Contact: linux-iio@vger.kernel.org 325Description: 326 Hardware applied calibration offset (assumed to fix production 327 inaccuracies). 328 329What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale 330What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale 331What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale 332What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale 333What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale 334What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale 335What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale 336What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale 337What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale 338what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale 339what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale 340What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale 341What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale 342What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale 343KernelVersion: 2.6.35 344Contact: linux-iio@vger.kernel.org 345Description: 346 Hardware applied calibration scale factor (assumed to fix 347 production inaccuracies). If shared across all channels, 348 <type>_calibscale is used. 349 350What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender 351What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender 352What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender 353What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender 354KernelVersion: 4.0 355Contact: linux-iio@vger.kernel.org 356Description: 357 Gender of the user (e.g.: male, female) used by some pedometers 358 to compute the stride length, distance, speed and activity 359 type. 360 361What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available 362What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available 363What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available 364What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available 365KernelVersion: 4.0 366Contact: linux-iio@vger.kernel.org 367Description: 368 Lists all available gender values (e.g.: male, female). 369 370What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight 371What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight 372What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight 373What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight 374KernelVersion: 3.19 375Contact: linux-iio@vger.kernel.org 376Description: 377 Height of the user (in meters) used by some pedometers 378 to compute the stride length, distance, speed and activity 379 type. 380 381What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight 382KernelVersion: 4.0 383Contact: linux-iio@vger.kernel.org 384Description: 385 Weight of the user (in kg). It is needed by some pedometers 386 to compute the calories burnt by the user. 387 388What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available 389What: /sys/.../iio:deviceX/in_voltageX_scale_available 390What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available 391What: /sys/.../iio:deviceX/out_voltageX_scale_available 392What: /sys/.../iio:deviceX/out_altvoltageX_scale_available 393What: /sys/.../iio:deviceX/in_capacitance_scale_available 394What: /sys/.../iio:deviceX/in_pressure_scale_available 395What: /sys/.../iio:deviceX/in_pressureY_scale_available 396KernelVersion: 2.6.35 397Contact: linux-iio@vger.kernel.org 398Description: 399 If a discrete set of scale values is available, they 400 are listed in this attribute. 401 402What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain 403What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain 404What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain 405What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain 406What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain 407KernelVersion: 2.6.35 408Contact: linux-iio@vger.kernel.org 409Description: 410 Hardware applied gain factor. If shared across all channels, 411 <type>_hardwaregain is used. 412 413What: /sys/.../in_accel_filter_low_pass_3db_frequency 414What: /sys/.../in_magn_filter_low_pass_3db_frequency 415What: /sys/.../in_anglvel_filter_low_pass_3db_frequency 416KernelVersion: 3.2 417Contact: linux-iio@vger.kernel.org 418Description: 419 If a known or controllable low pass filter is applied 420 to the underlying data channel, then this parameter 421 gives the 3dB frequency of the filter in Hz. 422 423What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw 424What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw 425KernelVersion: 2.6.37 426Contact: linux-iio@vger.kernel.org 427Description: 428 Raw (unscaled, no bias etc.) output voltage for 429 channel Y. The number must always be specified and 430 unique if the output corresponds to a single channel. 431 While DAC like devices typically use out_voltage, 432 a continuous frequency generating device, such as 433 a DDS or PLL should use out_altvoltage. 434 435What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw 436What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw 437KernelVersion: 2.6.37 438Contact: linux-iio@vger.kernel.org 439Description: 440 Raw (unscaled, no bias etc.) output voltage for an aggregate of 441 channel Y, channel Z, etc. This interface is available in cases 442 where a single output sets the value for multiple channels 443 simultaneously. 444 445What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode 446What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode 447What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode 448What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode 449KernelVersion: 2.6.38 450Contact: linux-iio@vger.kernel.org 451Description: 452 Specifies the output powerdown mode. 453 DAC output stage is disconnected from the amplifier and 454 1kohm_to_gnd: connected to ground via an 1kOhm resistor, 455 6kohm_to_gnd: connected to ground via a 6kOhm resistor, 456 20kohm_to_gnd: connected to ground via a 20kOhm resistor, 457 100kohm_to_gnd: connected to ground via an 100kOhm resistor, 458 500kohm_to_gnd: connected to ground via a 500kOhm resistor, 459 three_state: left floating. 460 For a list of available output power down options read 461 outX_powerdown_mode_available. If Y is not present the 462 mode is shared across all outputs. 463 464What: /sys/.../iio:deviceX/out_votlageY_powerdown_mode_available 465What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available 466What: /sys/.../iio:deviceX/out_altvotlageY_powerdown_mode_available 467What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available 468KernelVersion: 2.6.38 469Contact: linux-iio@vger.kernel.org 470Description: 471 Lists all available output power down modes. 472 If Y is not present the mode is shared across all outputs. 473 474What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown 475What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown 476What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown 477What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown 478KernelVersion: 2.6.38 479Contact: linux-iio@vger.kernel.org 480Description: 481 Writing 1 causes output Y to enter the power down mode specified 482 by the corresponding outY_powerdown_mode. DAC output stage is 483 disconnected from the amplifier. Clearing returns to normal 484 operation. Y may be suppressed if all outputs are controlled 485 together. 486 487What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency 488KernelVersion: 3.4.0 489Contact: linux-iio@vger.kernel.org 490Description: 491 Output frequency for channel Y in Hz. The number must always be 492 specified and unique if the output corresponds to a single 493 channel. 494 495What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase 496KernelVersion: 3.4.0 497Contact: linux-iio@vger.kernel.org 498Description: 499 Phase in radians of one frequency/clock output Y 500 (out_altvoltageY) relative to another frequency/clock output 501 (out_altvoltageZ) of the device X. The number must always be 502 specified and unique if the output corresponds to a single 503 channel. 504 505What: /sys/bus/iio/devices/iio:deviceX/events 506KernelVersion: 2.6.35 507Contact: linux-iio@vger.kernel.org 508Description: 509 Configuration of which hardware generated events are passed up 510 to user-space. 511 512What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en 513What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en 514What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en 515What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en 516What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en 517What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en 518What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en 519What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en 520What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en 521What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en 522What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en 523What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en 524What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en 525What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en 526What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en 527What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en 528What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en 529What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en 530What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en 531What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en 532What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en 533What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en 534What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en 535What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en 536What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en 537What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en 538What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en 539What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en 540What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en 541What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en 542What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en 543What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en 544KernelVersion: 2.6.37 545Contact: linux-iio@vger.kernel.org 546Description: 547 Event generated when channel passes a threshold in the specified 548 (_rising|_falling) direction. If the direction is not specified, 549 then either the device will report an event which ever direction 550 a single threshold value is passed in (e.g. 551 <type>[Y][_name]_<raw|input>_thresh_value) or 552 <type>[Y][_name]_<raw|input>_thresh_rising_value and 553 <type>[Y][_name]_<raw|input>_thresh_falling_value may take 554 different values, but the device can only enable both thresholds 555 or neither. 556 Note the driver will assume the last p events requested are 557 to be enabled where p is how many it supports (which may vary 558 depending on the exact set requested. So if you want to be 559 sure you have set what you think you have, check the contents of 560 these attributes after everything is configured. Drivers may 561 have to buffer any parameters so that they are consistent when 562 a given event type is enabled at a future point (and not those for 563 whatever event was previously enabled). 564 565What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en 566What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en 567What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en 568What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en 569What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en 570What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en 571What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en 572What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en 573What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en 574What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en 575What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en 576What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en 577What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en 578What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en 579What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en 580What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en 581What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en 582What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en 583What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en 584What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en 585What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en 586What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en 587What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en 588What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en 589What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en 590What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en 591What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en 592What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en 593What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en 594What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en 595What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en 596What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en 597KernelVersion: 2.6.37 598Contact: linux-iio@vger.kernel.org 599Description: 600 Event generated when channel passes a threshold on the rate of 601 change (1st differential) in the specified (_rising|_falling) 602 direction. If the direction is not specified, then either the 603 device will report an event which ever direction a single 604 threshold value is passed in (e.g. 605 <type>[Y][_name]_<raw|input>_roc_value) or 606 <type>[Y][_name]_<raw|input>_roc_rising_value and 607 <type>[Y][_name]_<raw|input>_roc_falling_value may take 608 different values, but the device can only enable both rate of 609 change thresholds or neither. 610 Note the driver will assume the last p events requested are 611 to be enabled where p is however many it supports (which may 612 vary depending on the exact set requested. So if you want to be 613 sure you have set what you think you have, check the contents of 614 these attributes after everything is configured. Drivers may 615 have to buffer any parameters so that they are consistent when 616 a given event type is enabled a future point (and not those for 617 whatever event was previously enabled). 618 619What: /sys/.../events/in_accel_thresh_rising_value 620What: /sys/.../events/in_accel_thresh_falling_value 621What: /sys/.../events/in_accel_x_raw_thresh_rising_value 622What: /sys/.../events/in_accel_x_raw_thresh_falling_value 623What: /sys/.../events/in_accel_y_raw_thresh_rising_value 624What: /sys/.../events/in_accel_y_raw_thresh_falling_value 625What: /sys/.../events/in_accel_z_raw_thresh_rising_value 626What: /sys/.../events/in_accel_z_raw_thresh_falling_value 627What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value 628What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value 629What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value 630What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value 631What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value 632What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value 633What: /sys/.../events/in_magn_x_raw_thresh_rising_value 634What: /sys/.../events/in_magn_x_raw_thresh_falling_value 635What: /sys/.../events/in_magn_y_raw_thresh_rising_value 636What: /sys/.../events/in_magn_y_raw_thresh_falling_value 637What: /sys/.../events/in_magn_z_raw_thresh_rising_value 638What: /sys/.../events/in_magn_z_raw_thresh_falling_value 639What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value 640What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value 641What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value 642What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value 643What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value 644What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value 645What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value 646What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value 647What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value 648What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value 649What: /sys/.../events/in_voltageY_raw_thresh_rising_value 650What: /sys/.../events/in_voltageY_raw_thresh_falling_value 651What: /sys/.../events/in_tempY_raw_thresh_rising_value 652What: /sys/.../events/in_tempY_raw_thresh_falling_value 653What: /sys/.../events/in_illuminance0_thresh_falling_value 654what: /sys/.../events/in_illuminance0_thresh_rising_value 655what: /sys/.../events/in_proximity0_thresh_falling_value 656what: /sys/.../events/in_proximity0_thresh_rising_value 657KernelVersion: 2.6.37 658Contact: linux-iio@vger.kernel.org 659Description: 660 Specifies the value of threshold that the device is comparing 661 against for the events enabled by 662 <type>Y[_name]_thresh[_rising|falling]_en. 663 If separate attributes exist for the two directions, but 664 direction is not specified for this attribute, then a single 665 threshold value applies to both directions. 666 The raw or input element of the name indicates whether the 667 value is in raw device units or in processed units (as _raw 668 and _input do on sysfs direct channel read attributes). 669 670What: /sys/.../events/in_accel_scale 671What: /sys/.../events/in_accel_peak_scale 672What: /sys/.../events/in_anglvel_scale 673What: /sys/.../events/in_magn_scale 674What: /sys/.../events/in_rot_from_north_magnetic_scale 675What: /sys/.../events/in_rot_from_north_true_scale 676What: /sys/.../events/in_voltage_scale 677What: /sys/.../events/in_voltage_supply_scale 678What: /sys/.../events/in_temp_scale 679What: /sys/.../events/in_illuminance_scale 680What: /sys/.../events/in_proximity_scale 681KernelVersion: 3.21 682Contact: linux-iio@vger.kernel.org 683Description: 684 Specifies the conversion factor from the standard units 685 to device specific units used to set the event trigger 686 threshold. 687 688What: /sys/.../events/in_accel_x_thresh_rising_hysteresis 689What: /sys/.../events/in_accel_x_thresh_falling_hysteresis 690What: /sys/.../events/in_accel_x_thresh_either_hysteresis 691What: /sys/.../events/in_accel_y_thresh_rising_hysteresis 692What: /sys/.../events/in_accel_y_thresh_falling_hysteresis 693What: /sys/.../events/in_accel_y_thresh_either_hysteresis 694What: /sys/.../events/in_accel_z_thresh_rising_hysteresis 695What: /sys/.../events/in_accel_z_thresh_falling_hysteresis 696What: /sys/.../events/in_accel_z_thresh_either_hysteresis 697What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis 698What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis 699What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis 700What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis 701What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis 702What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis 703What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis 704What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis 705What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis 706What: /sys/.../events/in_magn_x_thresh_rising_hysteresis 707What: /sys/.../events/in_magn_x_thresh_falling_hysteresis 708What: /sys/.../events/in_magn_x_thresh_either_hysteresis 709What: /sys/.../events/in_magn_y_thresh_rising_hysteresis 710What: /sys/.../events/in_magn_y_thresh_falling_hysteresis 711What: /sys/.../events/in_magn_y_thresh_either_hysteresis 712What: /sys/.../events/in_magn_z_thresh_rising_hysteresis 713What: /sys/.../events/in_magn_z_thresh_falling_hysteresis 714What: /sys/.../events/in_magn_z_thresh_either_hysteresis 715What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis 716What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis 717What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis 718What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis 719What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis 720What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis 721What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis 722What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis 723What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis 724What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis 725What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis 726What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis 727What: /sys/.../events/in_voltageY_thresh_rising_hysteresis 728What: /sys/.../events/in_voltageY_thresh_falling_hysteresis 729What: /sys/.../events/in_voltageY_thresh_either_hysteresis 730What: /sys/.../events/in_tempY_thresh_rising_hysteresis 731What: /sys/.../events/in_tempY_thresh_falling_hysteresis 732What: /sys/.../events/in_tempY_thresh_either_hysteresis 733What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis 734what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis 735what: /sys/.../events/in_illuminance0_thresh_either_hysteresis 736what: /sys/.../events/in_proximity0_thresh_falling_hysteresis 737what: /sys/.../events/in_proximity0_thresh_rising_hysteresis 738what: /sys/.../events/in_proximity0_thresh_either_hysteresis 739KernelVersion: 3.13 740Contact: linux-iio@vger.kernel.org 741Description: 742 Specifies the hysteresis of threshold that the device is comparing 743 against for the events enabled by 744 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis. 745 If separate attributes exist for the two directions, but 746 direction is not specified for this attribute, then a single 747 hysteresis value applies to both directions. 748 For falling events the hysteresis is added to the _value attribute for 749 this event to get the upper threshold for when the event goes back to 750 normal, for rising events the hysteresis is subtracted from the _value 751 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200 752 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event 753 will get activated once in_voltage0_raw goes above 1200 and will become 754 deactived again once the value falls below 1150. 755 756What: /sys/.../events/in_accel_x_raw_roc_rising_value 757What: /sys/.../events/in_accel_x_raw_roc_falling_value 758What: /sys/.../events/in_accel_y_raw_roc_rising_value 759What: /sys/.../events/in_accel_y_raw_roc_falling_value 760What: /sys/.../events/in_accel_z_raw_roc_rising_value 761What: /sys/.../events/in_accel_z_raw_roc_falling_value 762What: /sys/.../events/in_anglvel_x_raw_roc_rising_value 763What: /sys/.../events/in_anglvel_x_raw_roc_falling_value 764What: /sys/.../events/in_anglvel_y_raw_roc_rising_value 765What: /sys/.../events/in_anglvel_y_raw_roc_falling_value 766What: /sys/.../events/in_anglvel_z_raw_roc_rising_value 767What: /sys/.../events/in_anglvel_z_raw_roc_falling_value 768What: /sys/.../events/in_magn_x_raw_roc_rising_value 769What: /sys/.../events/in_magn_x_raw_roc_falling_value 770What: /sys/.../events/in_magn_y_raw_roc_rising_value 771What: /sys/.../events/in_magn_y_raw_roc_falling_value 772What: /sys/.../events/in_magn_z_raw_roc_rising_value 773What: /sys/.../events/in_magn_z_raw_roc_falling_value 774What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value 775What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value 776What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value 777What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value 778What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value 779What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value 780What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value 781What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value 782What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value 783What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value 784What: /sys/.../events/in_voltageY_raw_roc_rising_value 785What: /sys/.../events/in_voltageY_raw_roc_falling_value 786What: /sys/.../events/in_tempY_raw_roc_rising_value 787What: /sys/.../events/in_tempY_raw_roc_falling_value 788KernelVersion: 2.6.37 789Contact: linux-iio@vger.kernel.org 790Description: 791 Specifies the value of rate of change threshold that the 792 device is comparing against for the events enabled by 793 <type>[Y][_name]_roc[_rising|falling]_en. 794 If separate attributes exist for the two directions, 795 but direction is not specified for this attribute, 796 then a single threshold value applies to both directions. 797 The raw or input element of the name indicates whether the 798 value is in raw device units or in processed units (as _raw 799 and _input do on sysfs direct channel read attributes). 800 801What: /sys/.../events/in_accel_x_thresh_rising_period 802What: /sys/.../events/in_accel_x_thresh_falling_period 803What: /sys/.../events/in_accel_x_roc_rising_period 804What: /sys/.../events/in_accel_x_roc_falling_period 805What: /sys/.../events/in_accel_y_thresh_rising_period 806What: /sys/.../events/in_accel_y_thresh_falling_period 807What: /sys/.../events/in_accel_y_roc_rising_period 808What: /sys/.../events/in_accel_y_roc_falling_period 809What: /sys/.../events/in_accel_z_thresh_rising_period 810What: /sys/.../events/in_accel_z_thresh_falling_period 811What: /sys/.../events/in_accel_z_roc_rising_period 812What: /sys/.../events/in_accel_z_roc_falling_period 813What: /sys/.../events/in_anglvel_x_thresh_rising_period 814What: /sys/.../events/in_anglvel_x_thresh_falling_period 815What: /sys/.../events/in_anglvel_x_roc_rising_period 816What: /sys/.../events/in_anglvel_x_roc_falling_period 817What: /sys/.../events/in_anglvel_y_thresh_rising_period 818What: /sys/.../events/in_anglvel_y_thresh_falling_period 819What: /sys/.../events/in_anglvel_y_roc_rising_period 820What: /sys/.../events/in_anglvel_y_roc_falling_period 821What: /sys/.../events/in_anglvel_z_thresh_rising_period 822What: /sys/.../events/in_anglvel_z_thresh_falling_period 823What: /sys/.../events/in_anglvel_z_roc_rising_period 824What: /sys/.../events/in_anglvel_z_roc_falling_period 825What: /sys/.../events/in_magn_x_thresh_rising_period 826What: /sys/.../events/in_magn_x_thresh_falling_period 827What: /sys/.../events/in_magn_x_roc_rising_period 828What: /sys/.../events/in_magn_x_roc_falling_period 829What: /sys/.../events/in_magn_y_thresh_rising_period 830What: /sys/.../events/in_magn_y_thresh_falling_period 831What: /sys/.../events/in_magn_y_roc_rising_period 832What: /sys/.../events/in_magn_y_roc_falling_period 833What: /sys/.../events/in_magn_z_thresh_rising_period 834What: /sys/.../events/in_magn_z_thresh_falling_period 835What: /sys/.../events/in_magn_z_roc_rising_period 836What: /sys/.../events/in_magn_z_roc_falling_period 837What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period 838What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period 839What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period 840What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period 841What: /sys/.../events/in_rot_from_north_true_thresh_rising_period 842What: /sys/.../events/in_rot_from_north_true_thresh_falling_period 843What: /sys/.../events/in_rot_from_north_true_roc_rising_period 844What: /sys/.../events/in_rot_from_north_true_roc_falling_period 845What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period 846What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period 847What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period 848What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period 849What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period 850What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period 851What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period 852What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period 853What: /sys/.../events/in_voltageY_supply_thresh_rising_period 854What: /sys/.../events/in_voltageY_supply_thresh_falling_period 855What: /sys/.../events/in_voltageY_supply_roc_rising_period 856What: /sys/.../events/in_voltageY_supply_roc_falling_period 857What: /sys/.../events/in_voltageY_thresh_rising_period 858What: /sys/.../events/in_voltageY_thresh_falling_period 859What: /sys/.../events/in_voltageY_roc_rising_period 860What: /sys/.../events/in_voltageY_roc_falling_period 861What: /sys/.../events/in_tempY_thresh_rising_period 862What: /sys/.../events/in_tempY_thresh_falling_period 863What: /sys/.../events/in_tempY_roc_rising_period 864What: /sys/.../events/in_tempY_roc_falling_period 865What: /sys/.../events/in_accel_x&y&z_mag_falling_period 866What: /sys/.../events/in_intensity0_thresh_period 867What: /sys/.../events/in_proximity0_thresh_period 868What: /sys/.../events/in_activity_still_thresh_rising_period 869What: /sys/.../events/in_activity_still_thresh_falling_period 870What: /sys/.../events/in_activity_walking_thresh_rising_period 871What: /sys/.../events/in_activity_walking_thresh_falling_period 872What: /sys/.../events/in_activity_jogging_thresh_rising_period 873What: /sys/.../events/in_activity_jogging_thresh_falling_period 874What: /sys/.../events/in_activity_running_thresh_rising_period 875What: /sys/.../events/in_activity_running_thresh_falling_period 876KernelVersion: 2.6.37 877Contact: linux-iio@vger.kernel.org 878Description: 879 Period of time (in seconds) for which the condition must be 880 met before an event is generated. If direction is not 881 specified then this period applies to both directions. 882 883What: /sys/.../events/in_activity_still_thresh_rising_en 884What: /sys/.../events/in_activity_still_thresh_falling_en 885What: /sys/.../events/in_activity_walking_thresh_rising_en 886What: /sys/.../events/in_activity_walking_thresh_falling_en 887What: /sys/.../events/in_activity_jogging_thresh_rising_en 888What: /sys/.../events/in_activity_jogging_thresh_falling_en 889What: /sys/.../events/in_activity_running_thresh_rising_en 890What: /sys/.../events/in_activity_running_thresh_falling_en 891KernelVersion: 3.19 892Contact: linux-iio@vger.kernel.org 893Description: 894 Enables or disables activitity events. Depending on direction 895 an event is generated when sensor ENTERS or LEAVES a given state. 896 897What: /sys/.../events/in_activity_still_thresh_rising_value 898What: /sys/.../events/in_activity_still_thresh_falling_value 899What: /sys/.../events/in_activity_walking_thresh_rising_value 900What: /sys/.../events/in_activity_walking_thresh_falling_value 901What: /sys/.../events/in_activity_jogging_thresh_rising_value 902What: /sys/.../events/in_activity_jogging_thresh_falling_value 903What: /sys/.../events/in_activity_running_thresh_rising_value 904What: /sys/.../events/in_activity_running_thresh_falling_value 905KernelVersion: 3.19 906Contact: linux-iio@vger.kernel.org 907Description: 908 Confidence value (in units as percentage) to be used 909 for deciding when an event should be generated. E.g for 910 running: If the confidence value reported by the sensor 911 is greater than in_activity_running_thresh_rising_value 912 then the sensor ENTERS running state. Conversely, if the 913 confidence value reported by the sensor is lower than 914 in_activity_running_thresh_falling_value then the sensor 915 is LEAVING running state. 916 917What: /sys/.../iio:deviceX/events/in_accel_mag_en 918What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en 919What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en 920What: /sys/.../iio:deviceX/events/in_accel_x_mag_en 921What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en 922What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en 923What: /sys/.../iio:deviceX/events/in_accel_y_mag_en 924What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en 925What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en 926What: /sys/.../iio:deviceX/events/in_accel_z_mag_en 927What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en 928What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en 929What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en 930What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en 931KernelVersion: 2.6.37 932Contact: linux-iio@vger.kernel.org 933Description: 934 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the 935 magnitude of the channel is compared to the threshold, not its 936 signed value. 937 938What: /sys/.../events/in_accel_raw_mag_value 939What: /sys/.../events/in_accel_x_raw_mag_rising_value 940What: /sys/.../events/in_accel_y_raw_mag_rising_value 941What: /sys/.../events/in_accel_z_raw_mag_rising_value 942KernelVersion: 2.6.37 943Contact: linux-iio@vger.kernel.org 944Description: 945 The value to which the magnitude of the channel is compared. If 946 number or direction is not specified, applies to all channels of 947 this type. 948 949What: /sys/.../events/in_steps_change_en 950KernelVersion: 4.0 951Contact: linux-iio@vger.kernel.org 952Description: 953 Event generated when channel passes a threshold on the absolute 954 change in value. E.g. for steps: a step change event is 955 generated each time the user takes N steps, where N is set using 956 in_steps_change_value. 957 958What: /sys/.../events/in_steps_change_value 959KernelVersion: 4.0 960Contact: linux-iio@vger.kernel.org 961Description: 962 Specifies the value of change threshold that the 963 device is comparing against for the events enabled by 964 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps: 965 if set to 3, a step change event will be generated every 3 966 steps. 967 968What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger 969KernelVersion: 2.6.35 970Contact: linux-iio@vger.kernel.org 971Description: 972 The name of the trigger source being used, as per string given 973 in /sys/class/iio/triggerY/name. 974 975What: /sys/bus/iio/devices/iio:deviceX/buffer/length 976KernelVersion: 2.6.35 977Contact: linux-iio@vger.kernel.org 978Description: 979 Number of scans contained by the buffer. 980 981What: /sys/bus/iio/devices/iio:deviceX/buffer/bytes_per_datum 982KernelVersion: 2.6.37 983Contact: linux-iio@vger.kernel.org 984Description: 985 Bytes per scan. Due to alignment fun, the scan may be larger 986 than implied directly by the scan_element parameters. 987 988What: /sys/bus/iio/devices/iio:deviceX/buffer/enable 989KernelVersion: 2.6.35 990Contact: linux-iio@vger.kernel.org 991Description: 992 Actually start the buffer capture up. Will start trigger 993 if first device and appropriate. 994 995What: /sys/bus/iio/devices/iio:deviceX/scan_elements 996KernelVersion: 2.6.37 997Contact: linux-iio@vger.kernel.org 998Description: 999 Directory containing interfaces for elements that will be 1000 captured for a single triggered sample set in the buffer. 1001 1002What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en 1003What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en 1004What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en 1005What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en 1006What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en 1007What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en 1008What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en 1009What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en 1010What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en 1011What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en 1012What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en 1013What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en 1014What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en 1015What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en 1016What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en 1017What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en 1018What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en 1019What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en 1020What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en 1021What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en 1022What: /sys/.../iio:deviceX/scan_elements/in_pressure_en 1023What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en 1024What: /sys/.../iio:deviceX/scan_elements/in_proximity_en 1025KernelVersion: 2.6.37 1026Contact: linux-iio@vger.kernel.org 1027Description: 1028 Scan element control for triggered data capture. 1029 1030What: /sys/.../iio:deviceX/scan_elements/in_accel_type 1031What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type 1032What: /sys/.../iio:deviceX/scan_elements/in_magn_type 1033What: /sys/.../iio:deviceX/scan_elements/in_incli_type 1034What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type 1035What: /sys/.../iio:deviceX/scan_elements/in_voltage_type 1036What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type 1037What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type 1038What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type 1039What: /sys/.../iio:deviceX/scan_elements/in_pressure_type 1040What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type 1041What: /sys/.../iio:deviceX/scan_elements/in_proximity_type 1042KernelVersion: 2.6.37 1043Contact: linux-iio@vger.kernel.org 1044Description: 1045 Description of the scan element data storage within the buffer 1046 and hence the form in which it is read from user-space. 1047 Form is [be|le]:[s|u]bits/storagebits[>>shift]. 1048 be or le specifies big or little endian. s or u specifies if 1049 signed (2's complement) or unsigned. bits is the number of bits 1050 of data and storagebits is the space (after padding) that it 1051 occupies in the buffer. shift if specified, is the shift that 1052 needs to be applied prior to masking out unused bits. Some 1053 devices put their data in the middle of the transferred elements 1054 with additional information on both sides. Note that some 1055 devices will have additional information in the unused bits 1056 so to get a clean value, the bits value must be used to mask 1057 the buffer output value appropriately. The storagebits value 1058 also specifies the data alignment. So s48/64>>2 will be a 1059 signed 48 bit integer stored in a 64 bit location aligned to 1060 a 64 bit boundary. To obtain the clean value, shift right 2 1061 and apply a mask to zero the top 16 bits of the result. 1062 For other storage combinations this attribute will be extended 1063 appropriately. 1064 1065What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available 1066KernelVersion: 2.6.37 1067Contact: linux-iio@vger.kernel.org 1068Description: 1069 If the type parameter can take one of a small set of values, 1070 this attribute lists them. 1071 1072What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index 1073What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index 1074What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index 1075What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index 1076What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index 1077What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index 1078What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index 1079What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index 1080What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index 1081What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index 1082What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index 1083What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index 1084What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index 1085What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index 1086What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index 1087What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index 1088What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index 1089What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index 1090What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index 1091What: /sys/.../iio:deviceX/scan_elements/in_pressure_index 1092What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index 1093What: /sys/.../iio:deviceX/scan_elements/in_proximity_index 1094KernelVersion: 2.6.37 1095Contact: linux-iio@vger.kernel.org 1096Description: 1097 A single positive integer specifying the position of this 1098 scan element in the buffer. Note these are not dependent on 1099 what is enabled and may not be contiguous. Thus for user-space 1100 to establish the full layout these must be used in conjunction 1101 with all _en attributes to establish which channels are present, 1102 and the relevant _type attributes to establish the data storage 1103 format. 1104 1105What: /sys/.../iio:deviceX/in_activity_still_input 1106What: /sys/.../iio:deviceX/in_activity_walking_input 1107What: /sys/.../iio:deviceX/in_activity_jogging_input 1108What: /sys/.../iio:deviceX/in_activity_running_input 1109KernelVersion: 3.19 1110Contact: linux-iio@vger.kernel.org 1111Description: 1112 This attribute is used to read the confidence for an activity 1113 expressed in units as percentage. 1114 1115What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw 1116KernelVersion: 2.6.38 1117Contact: linux-iio@vger.kernel.org 1118Description: 1119 This attribute is used to read the amount of quadrature error 1120 present in the device at a given time. 1121 1122What: /sys/.../iio:deviceX/in_accelX_power_mode 1123KernelVersion: 3.11 1124Contact: linux-iio@vger.kernel.org 1125Description: 1126 Specifies the chip power mode. 1127 low_noise: reduce noise level from ADC, 1128 low_power: enable low current consumption. 1129 For a list of available output power modes read 1130 in_accel_power_mode_available. 1131 1132What: /sys/.../iio:deviceX/in_energy_input 1133What: /sys/.../iio:deviceX/in_energy_raw 1134KernelVersion: 4.0 1135Contact: linux-iio@vger.kernel.org 1136Description: 1137 This attribute is used to read the energy value reported by the 1138 device (e.g.: human activity sensors report energy burnt by the 1139 user). Units after application of scale are Joules. 1140 1141What: /sys/.../iio:deviceX/in_distance_input 1142What: /sys/.../iio:deviceX/in_distance_raw 1143KernelVersion: 4.0 1144Contact: linux-iio@vger.kernel.org 1145Description: 1146 This attribute is used to read the distance covered by the user 1147 since the last reboot while activated. Units after application 1148 of scale are meters. 1149 1150What: /sys/bus/iio/devices/iio:deviceX/store_eeprom 1151KernelVersion: 3.4.0 1152Contact: linux-iio@vger.kernel.org 1153Description: 1154 Writing '1' stores the current device configuration into 1155 on-chip EEPROM. After power-up or chip reset the device will 1156 automatically load the saved configuration. 1157 1158What: /sys/.../iio:deviceX/in_proximity_raw 1159What: /sys/.../iio:deviceX/in_proximity_input 1160What: /sys/.../iio:deviceX/in_proximityY_raw 1161KernelVersion: 3.4 1162Contact: linux-iio@vger.kernel.org 1163Description: 1164 Proximity measurement indicating that some 1165 object is near the sensor, usually be observing 1166 reflectivity of infrared or ultrasound emitted. 1167 Often these sensors are unit less and as such conversion 1168 to SI units is not possible. Higher proximity measurements 1169 indicate closer objects, and vice versa. 1170 1171What: /sys/.../iio:deviceX/in_illuminance_input 1172What: /sys/.../iio:deviceX/in_illuminance_raw 1173What: /sys/.../iio:deviceX/in_illuminanceY_input 1174What: /sys/.../iio:deviceX/in_illuminanceY_raw 1175What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw 1176What: /sys/.../iio:deviceX/in_illuminance_ir_raw 1177What: /sys/.../iio:deviceX/in_illuminance_clear_raw 1178KernelVersion: 3.4 1179Contact: linux-iio@vger.kernel.org 1180Description: 1181 Illuminance measurement, units after application of scale 1182 and offset are lux. 1183 1184What: /sys/.../iio:deviceX/in_intensityY_raw 1185What: /sys/.../iio:deviceX/in_intensityY_ir_raw 1186What: /sys/.../iio:deviceX/in_intensityY_both_raw 1187KernelVersion: 3.4 1188Contact: linux-iio@vger.kernel.org 1189Description: 1190 Unit-less light intensity. Modifiers both and ir indicate 1191 that measurements contains visible and infrared light 1192 components or just infrared light, respectively. 1193 1194What: /sys/.../iio:deviceX/in_intensity_red_integration_time 1195What: /sys/.../iio:deviceX/in_intensity_green_integration_time 1196What: /sys/.../iio:deviceX/in_intensity_blue_integration_time 1197What: /sys/.../iio:deviceX/in_intensity_clear_integration_time 1198What: /sys/.../iio:deviceX/in_illuminance_integration_time 1199KernelVersion: 3.12 1200Contact: linux-iio@vger.kernel.org 1201Description: 1202 This attribute is used to get/set the integration time in 1203 seconds. 1204 1205What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time 1206KernelVersion: 4.0 1207Contact: linux-iio@vger.kernel.org 1208Description: 1209 Number of seconds in which to compute speed. 1210 1211What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw 1212KernelVersion: 3.15 1213Contact: linux-iio@vger.kernel.org 1214Description: 1215 Raw value of quaternion components using a format 1216 x y z w. Here x, y, and z component represents the axis about 1217 which a rotation will occur and w component represents the 1218 amount of rotation. 1219 1220What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw 1221What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw 1222What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw 1223What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw 1224KernelVersion: 3.15 1225Contact: linux-iio@vger.kernel.org 1226Description: 1227 Raw value of rotation from true/magnetic north measured with 1228 or without compensation from tilt sensors. 1229 1230What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw 1231KernelVersion: 3.18 1232Contact: linux-iio@vger.kernel.org 1233Description: 1234 Raw current measurement from channel X. Units are in milliamps 1235 after application of scale and offset. If no offset or scale is 1236 present, output should be considered as processed with the 1237 unit in milliamps. 1238 1239What: /sys/.../iio:deviceX/in_energy_en 1240What: /sys/.../iio:deviceX/in_distance_en 1241What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en 1242What: /sys/.../iio:deviceX/in_steps_en 1243KernelVersion: 3.19 1244Contact: linux-iio@vger.kernel.org 1245Description: 1246 Activates a device feature that runs in firmware/hardware. 1247 E.g. for steps: the pedometer saves power while not used; 1248 when activated, it will count the steps taken by the user in 1249 firmware and export them through in_steps_input. 1250 1251What: /sys/.../iio:deviceX/in_steps_input 1252KernelVersion: 3.19 1253Contact: linux-iio@vger.kernel.org 1254Description: 1255 This attribute is used to read the number of steps taken by the user 1256 since the last reboot while activated. 1257 1258What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input 1259What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw 1260KernelVersion: 3.19 1261Contact: linux-iio@vger.kernel.org 1262Description: 1263 This attribute is used to read the current speed value of the 1264 user (which is the norm or magnitude of the velocity vector). 1265 Units after application of scale are m/s. 1266 1267What: /sys/.../iio:deviceX/in_steps_debounce_count 1268KernelVersion: 4.0 1269Contact: linux-iio@vger.kernel.org 1270Description: 1271 Specifies the number of steps that must occur within 1272 in_steps_filter_debounce_time for the pedometer to decide the 1273 consumer is making steps. 1274 1275What: /sys/.../iio:deviceX/in_steps_debounce_time 1276KernelVersion: 4.0 1277Contact: linux-iio@vger.kernel.org 1278Description: 1279 Specifies number of seconds in which we compute the steps 1280 that occur in order to decide if the consumer is making steps. 1281 1282What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark 1283KernelVersion: 4.2 1284Contact: linux-iio@vger.kernel.org 1285Description: 1286 A single positive integer specifying the maximum number of scan 1287 elements to wait for. 1288 Poll will block until the watermark is reached. 1289 Blocking read will wait until the minimum between the requested 1290 read amount or the low water mark is available. 1291 Non-blocking read will retrieve the available samples from the 1292 buffer even if there are less samples then watermark level. This 1293 allows the application to block on poll with a timeout and read 1294 the available samples after the timeout expires and thus have a 1295 maximum delay guarantee. 1296 1297What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled 1298KernelVersion: 4.2 1299Contact: linux-iio@vger.kernel.org 1300Description: 1301 A read-only boolean value that indicates if the hardware fifo is 1302 currently enabled or disabled. If the device does not have a 1303 hardware fifo this entry is not present. 1304 The hardware fifo is enabled when the buffer is enabled if the 1305 current hardware fifo watermark level is set and other current 1306 device settings allows it (e.g. if a trigger is set that samples 1307 data differently that the hardware fifo does then hardware fifo 1308 will not enabled). 1309 If the hardware fifo is enabled and the level of the hardware 1310 fifo reaches the hardware fifo watermark level the device will 1311 flush its hardware fifo to the device buffer. Doing a non 1312 blocking read on the device when no samples are present in the 1313 device buffer will also force a flush. 1314 When the hardware fifo is enabled there is no need to use a 1315 trigger to use buffer mode since the watermark settings 1316 guarantees that the hardware fifo is flushed to the device 1317 buffer. 1318 1319What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark 1320KernelVersion: 4.2 1321Contact: linux-iio@vger.kernel.org 1322Description: 1323 Read-only entry that contains a single integer specifying the 1324 current watermark level for the hardware fifo. If the device 1325 does not have a hardware fifo this entry is not present. 1326 The watermark level for the hardware fifo is set by the driver 1327 based on the value set by the user in buffer/watermark but 1328 taking into account hardware limitations (e.g. most hardware 1329 buffers are limited to 32-64 samples, some hardware buffers 1330 watermarks are fixed or have minimum levels). A value of 0 1331 means that the hardware watermark is unset. 1332 1333What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min 1334KernelVersion: 4.2 1335Contact: linux-iio@vger.kernel.org 1336Description: 1337 A single positive integer specifying the minimum watermark level 1338 for the hardware fifo of this device. If the device does not 1339 have a hardware fifo this entry is not present. 1340 If the user sets buffer/watermark to a value less than this one, 1341 then the hardware watermark will remain unset. 1342 1343What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max 1344KernelVersion: 4.2 1345Contact: linux-iio@vger.kernel.org 1346Description: 1347 A single positive integer specifying the maximum watermark level 1348 for the hardware fifo of this device. If the device does not 1349 have a hardware fifo this entry is not present. 1350 If the user sets buffer/watermark to a value greater than this 1351 one, then the hardware watermark will be capped at this value. 1352 1353What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available 1354KernelVersion: 4.2 1355Contact: linux-iio@vger.kernel.org 1356Description: 1357 A list of positive integers specifying the available watermark 1358 levels for the hardware fifo. This entry is optional and if it 1359 is not present it means that all the values between 1360 hwfifo_watermark_min and hwfifo_watermark_max are supported. 1361 If the user sets buffer/watermark to a value greater than 1362 hwfifo_watermak_min but not equal to any of the values in this 1363 list, the driver will chose an appropriate value for the 1364 hardware fifo watermark level. 1365