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 19 Contains trigger type specific elements. These do not 20 generalize well and hence are not documented in this file. 21 X is the IIO index of the trigger. 22 23What: /sys/bus/iio/devices/iio:deviceX/buffer 24KernelVersion: 2.6.35 25Contact: linux-iio@vger.kernel.org 26Description: 27 Directory of attributes relating to the buffer for the device. 28 29What: /sys/bus/iio/devices/iio:deviceX/name 30KernelVersion: 2.6.35 31Contact: linux-iio@vger.kernel.org 32Description: 33 Description of the physical chip / device for device X. 34 Typically a part number. 35 36What: /sys/bus/iio/devices/iio:deviceX/label 37KernelVersion: 5.8 38Contact: linux-iio@vger.kernel.org 39Description: 40 Optional symbolic label for a device. 41 This is useful for userspace to be able to better identify an 42 individual device. 43 44 The contents of the label are free-form, but there are some 45 standardized uses: 46 47 For proximity sensors which give the proximity (of a person) to 48 a certain wlan or wwan antenna the following standardized labels 49 are used: 50 51 * "proximity-wifi" 52 * "proximity-lte" 53 * "proximity-wifi-lte" 54 * "proximity-wifi-left" 55 * "proximity-wifi-right" 56 57 These are used to indicate to userspace that these proximity 58 sensors may be used to tune transmit power to ensure that 59 Specific Absorption Rate (SAR) limits are honored. 60 The "-left" and "-right" labels are for devices with multiple 61 antennas. 62 63 In some laptops/tablets the standardized proximity sensor labels 64 instead indicate proximity to a specific part of the device: 65 66 * "proximity-palmrest" indicates proximity to the keyboard's palmrest 67 * "proximity-palmrest-left" indicates proximity to the left part of the palmrest 68 * "proximity-palmrest-right" indicates proximity to the right part of the palmrest 69 * "proximity-lap" indicates the device is being used on someone's lap 70 71 Note "proximity-lap" is special in that its value may be 72 calculated by firmware from other sensor readings, rather then 73 being a raw sensor reading. 74 75 For accelerometers used in 2-in-1s with 360�� (yoga-style) hinges, 76 which have an accelerometer in both their base and their display, 77 the following standardized labels are used: 78 79 * "accel-base" 80 * "accel-display" 81 82 For devices where an accelerometer is housed in the swivel camera subassembly 83 (for AR application), the following standardized label is used: 84 85 * "accel-camera" 86 87What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock 88KernelVersion: 4.5 89Contact: linux-iio@vger.kernel.org 90Description: 91 String identifying current posix clock used to timestamp 92 buffered samples and events for device X. 93 94What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency 95What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency 96What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency 97What: /sys/bus/iio/devices/triggerX/sampling_frequency 98KernelVersion: 2.6.35 99Contact: linux-iio@vger.kernel.org 100Description: 101 Some devices have internal clocks. This parameter sets the 102 resulting sampling frequency. In many devices this 103 parameter has an effect on input filters etc. rather than 104 simply controlling when the input is sampled. As this 105 affects data ready triggers, hardware buffers and the sysfs 106 direct access interfaces, it may be found in any of the 107 relevant directories. If it affects all of the above 108 then it is to be found in the base device directory. 109 110 The stm32-timer-trigger has the additional characteristic that 111 a sampling_frequency of 0 is defined to stop sampling. 112 113What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available 114What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available 115What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available 116What: /sys/.../iio:deviceX/buffer/sampling_frequency_available 117What: /sys/bus/iio/devices/triggerX/sampling_frequency_available 118KernelVersion: 2.6.35 119Contact: linux-iio@vger.kernel.org 120Description: 121 When the internal sampling clock can only take a specific set of 122 frequencies, we can specify the available values with: 123 124 - a small discrete set of values like "0 2 4 6 8" 125 - a range with minimum, step and maximum frequencies like 126 "[min step max]" 127 128What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio 129KernelVersion: 2.6.38 130Contact: linux-iio@vger.kernel.org 131Description: 132 Hardware dependent ADC oversampling. Controls the sampling ratio 133 of the digital filter if available. 134 135What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available 136KernelVersion: 2.6.38 137Contact: linux-iio@vger.kernel.org 138Description: 139 Hardware dependent values supported by the oversampling filter. 140 141What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw 142What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw 143What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw 144What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw 145KernelVersion: 2.6.35 146Contact: linux-iio@vger.kernel.org 147Description: 148 Raw (unscaled no bias removal etc.) voltage measurement from 149 channel Y. In special cases where the channel does not 150 correspond to externally available input one of the named 151 versions may be used. The number must always be specified and 152 unique to allow association with event codes. Units after 153 application of scale and offset are millivolts. 154 155 Channels with 'i' and 'q' modifiers always exist in pairs and both 156 channels refer to the same signal. The 'i' channel contains the in-phase 157 component of the signal while the 'q' channel contains the quadrature 158 component. 159 160What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw 161KernelVersion: 2.6.35 162Contact: linux-iio@vger.kernel.org 163Description: 164 Raw (unscaled) differential voltage measurement equivalent to 165 channel Y - channel Z where these channel numbers apply to the 166 physically equivalent inputs when non differential readings are 167 separately available. In differential only parts, then all that 168 is required is a consistent labeling. Units after application 169 of scale and offset are millivolts. 170 171What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw 172What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw 173KernelVersion: 3.17 174Contact: linux-iio@vger.kernel.org 175Description: 176 Raw (unscaled no bias removal etc.) current measurement from 177 channel Y. In special cases where the channel does not 178 correspond to externally available input one of the named 179 versions may be used. The number must always be specified and 180 unique to allow association with event codes. Units after 181 application of scale and offset are milliamps. 182 183What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw 184KernelVersion: 4.5 185Contact: linux-iio@vger.kernel.org 186Description: 187 Raw (unscaled no bias removal etc.) power measurement from 188 channel Y. The number must always be specified and 189 unique to allow association with event codes. Units after 190 application of scale and offset are milliwatts. 191 192What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw 193KernelVersion: 3.2 194Contact: linux-iio@vger.kernel.org 195Description: 196 Raw capacitance measurement from channel Y. Units after 197 application of scale and offset are nanofarads. 198 199What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw 200KernelVersion: 3.2 201Contact: linux-iio@vger.kernel.org 202Description: 203 Raw differential capacitance measurement equivalent to 204 channel Y - channel Z where these channel numbers apply to the 205 physically equivalent inputs when non differential readings are 206 separately available. In differential only parts, then all that 207 is required is a consistent labeling. Units after application 208 of scale and offset are nanofarads. 209 210What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint 211KernelVersion: 6.1 212Contact: linux-iio@vger.kernel.org 213Description: 214 For differential channels, this an offset that is applied 215 equally to both inputs. As the reading is of the difference 216 between the two inputs, this should not be applied to the _raw 217 reading by userspace (unlike _offset) and unlike calibbias 218 it does not affect the differential value measured because 219 the effect of _zeropoint cancels out across the two inputs 220 that make up the differential pair. It's purpose is to bring 221 the individual signals, before the differential is measured, 222 within the measurement range of the device. The naming is 223 chosen because if the separate inputs that make the 224 differential pair are drawn on a graph in their 225 _raw units, this is the value that the zero point on the 226 measurement axis represents. It is expressed with the 227 same scaling as _raw. 228 229What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw 230What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw 231What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw 232What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw 233What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw 234What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw 235KernelVersion: 2.6.35 236Contact: linux-iio@vger.kernel.org 237Description: 238 Raw (unscaled no bias removal etc.) temperature measurement. 239 If an axis is specified it generally means that the temperature 240 sensor is associated with one part of a compound device (e.g. 241 a gyroscope axis). The ambient and object modifiers distinguish 242 between ambient (reference) and distant temperature for contact- 243 less measurements. Units after application of scale and offset 244 are milli degrees Celsius. 245 246What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input 247KernelVersion: 2.6.38 248Contact: linux-iio@vger.kernel.org 249Description: 250 Scaled temperature measurement in milli degrees Celsius. 251 252What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw 253What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw 254What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw 255KernelVersion: 2.6.35 256Contact: linux-iio@vger.kernel.org 257Description: 258 Acceleration in direction x, y or z (may be arbitrarily assigned 259 but should match other such assignments on device). 260 Has all of the equivalent parameters as per voltageY. Units 261 after application of scale and offset are m/s^2. 262 263What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_x_raw 264What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_y_raw 265What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_z_raw 266KernelVersion: 6.1 267Contact: linux-iio@vger.kernel.org 268Description: 269 As per in_accel_X_raw attributes, but minus the 270 acceleration due to gravity. 271 272What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw 273What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw 274What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw 275KernelVersion: 4.11 276Contact: linux-iio@vger.kernel.org 277Description: 278 Gravity in direction x, y or z (may be arbitrarily assigned 279 but should match other such assignments on device). 280 Units after application of scale and offset are m/s^2. 281 282What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_x_raw 283What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_y_raw 284What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_z_raw 285KernelVersion: 6.5 286Contact: linux-iio@vger.kernel.org 287Description: 288 Angular displacement between two consecutive samples on x, y or 289 z (may be arbitrarily assigned but should match other such 290 assignments on device). 291 In order to compute the total angular displacement during a 292 desired period of time, the application should sum-up the delta 293 angle samples acquired during that time. 294 Units after application of scale and offset are radians. 295 296What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_x_raw 297What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_y_raw 298What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_z_raw 299KernelVersion: 6.5 300Contact: linux-iio@vger.kernel.org 301Description: 302 The linear velocity change between two consecutive samples on x, 303 y or z (may be arbitrarily assigned but should match other such 304 assignments on device). 305 In order to compute the total linear velocity change during a 306 desired period of time, the application should sum-up the delta 307 velocity samples acquired during that time. 308 Units after application of scale and offset are meters per 309 second. 310 311What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw 312What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw 313KernelVersion: 4.17 314Contact: linux-iio@vger.kernel.org 315Description: 316 Angle of rotation. Units after application of scale and offset 317 are radians. 318 319What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw 320What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw 321KernelVersion: 4.19 322Contact: linux-iio@vger.kernel.org 323Description: 324 Relative position in direction x or y on a pad (may be 325 arbitrarily assigned but should match other such assignments on 326 device). 327 Units after application of scale and offset are milli percents 328 from the pad's size in both directions. Should be calibrated by 329 the consumer. 330 331What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw 332What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw 333What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw 334KernelVersion: 2.6.35 335Contact: linux-iio@vger.kernel.org 336Description: 337 Angular velocity about axis x, y or z (may be arbitrarily 338 assigned). Has all the equivalent parameters as per voltageY. 339 Units after application of scale and offset are radians per 340 second. 341 342What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw 343What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw 344What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw 345KernelVersion: 2.6.35 346Contact: linux-iio@vger.kernel.org 347Description: 348 Inclination raw reading about axis x, y or z (may be 349 arbitrarily assigned). Data converted by application of offset 350 and scale to degrees. 351 352What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw 353What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw 354What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw 355KernelVersion: 2.6.35 356Contact: linux-iio@vger.kernel.org 357Description: 358 Magnetic field along axis x, y or z (may be arbitrarily 359 assigned). Data converted by application of offset 360 then scale to Gauss. 361 362What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw 363What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw 364What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw 365What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_peak_raw 366What: /sys/bus/iio/devices/iio:deviceX/in_temp_peak_raw 367KernelVersion: 2.6.36 368Contact: linux-iio@vger.kernel.org 369Description: 370 Highest value since some reset condition. These 371 attributes allow access to this and are otherwise 372 the direct equivalent of the <type>Y[_name]_raw attributes. 373 374What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_trough_raw 375What: /sys/bus/iio/devices/iio:deviceX/in_temp_trough_raw 376KernelVersion: 6.7 377Contact: linux-iio@vger.kernel.org 378Description: 379 Lowest value since some reset condition. These 380 attributes allow access to this and are otherwise 381 the direct equivalent of the <type>Y[_name]_raw attributes. 382 383What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw 384KernelVersion: 2.6.36 385Contact: linux-iio@vger.kernel.org 386Description: 387 A computed peak value based on the sum squared magnitude of 388 the underlying value in the specified directions. 389 390What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw 391What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw 392KernelVersion: 3.8 393Contact: linux-iio@vger.kernel.org 394Description: 395 Raw pressure measurement from channel Y. Units after 396 application of scale and offset are kilopascal. 397 398What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input 399What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input 400KernelVersion: 3.8 401Contact: linux-iio@vger.kernel.org 402Description: 403 Scaled pressure measurement from channel Y, in kilopascal. 404 405What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw 406KernelVersion: 3.14 407Contact: linux-iio@vger.kernel.org 408Description: 409 Raw humidity measurement of air. Units after application of 410 scale and offset are milli percent. 411 412What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input 413KernelVersion: 3.14 414Contact: linux-iio@vger.kernel.org 415Description: 416 Scaled humidity measurement in milli percent. 417 418What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw 419KernelVersion: 3.5 420Contact: linux-iio@vger.kernel.org 421Description: 422 Averaged raw measurement from channel X. The number of values 423 used for averaging is device specific. The converting rules for 424 normal raw values also applies to the averaged raw values. 425 426What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset 427What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset 428What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset 429What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset 430What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset 431What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset 432What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset 433What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset 434What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset 435What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset 436What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset 437What: /sys/bus/iio/devices/iio:deviceX/in_current_offset 438What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset 439What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset 440What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset 441What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset 442What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset 443What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset 444What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset 445What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset 446What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset 447What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset 448What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset 449What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset 450What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_offset 451KernelVersion: 2.6.35 452Contact: linux-iio@vger.kernel.org 453Description: 454 If known for a device, offset to be added to <type>[Y]_raw prior 455 to scaling by <type>[Y]_scale in order to obtain value in the 456 <type> units as specified in <type>[Y]_raw documentation. 457 Not present if the offset is always 0 or unknown. If Y or 458 axis <x|y|z> is not present, then the offset applies to all 459 in channels of <type>. 460 May be writable if a variable offset can be applied on the 461 device. Note that this is different to calibbias which 462 is for devices (or drivers) that apply offsets to compensate 463 for variation between different instances of the part, typically 464 adjusted by using some hardware supported calibration procedure. 465 Calibbias is applied internally, offset is applied in userspace 466 to the _raw output. 467 468What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale 469What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale 470What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale 471What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale 472What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale 473What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale 474What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale 475What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale 476What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale 477What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale 478What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale 479What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale 480What: /sys/bus/iio/devices/iio:deviceX/in_current_scale 481What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale 482What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale 483What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale 484What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale 485What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale 486What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale 487What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale 488What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale 489What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale 490What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale 491What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale 492What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale 493What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale 494What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale 495What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale 496What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale 497What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale 498What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale 499What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale 500What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale 501What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale 502What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale 503What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale 504What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_scale 505What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_scale 506What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale 507What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale 508What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale 509What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale 510What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_scale 511KernelVersion: 2.6.35 512Contact: linux-iio@vger.kernel.org 513Description: 514 If known for a device, scale to be applied to <type>Y[_name]_raw 515 post addition of <type>[Y][_name]_offset in order to obtain the 516 measured value in <type> units as specified in 517 <type>[Y][_name]_raw documentation. If shared across all in 518 channels then Y and <x|y|z> are not present and the value is 519 called <type>[Y][_name]_scale. The peak modifier means this 520 value is applied to <type>Y[_name]_peak_raw values. 521 522What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias 523What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias 524What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias 525What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias 526What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias 527What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias 528What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias 529What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias 530What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias 531What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias 532KernelVersion: 2.6.35 533Contact: linux-iio@vger.kernel.org 534Description: 535 Hardware applied calibration offset (assumed to fix production 536 inaccuracies). 537 icm42600: For this device values are real physical offsets 538 expressed in SI units (m/s^2 for accelerometers and rad/s 539 for gyroscope)/ 540 541What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available 542What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available 543KernelVersion: 5.8 544Contact: linux-iio@vger.kernel.org 545Description: 546 Available values of calibbias. Maybe expressed as either of: 547 548 - a small discrete set of values like "0 2 4 6 8" 549 - a range specified as "[min step max]" 550 551What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale 552What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale 553What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale 554What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale 555What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale 556What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale 557What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale 558What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale 559What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale 560What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale 561What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale 562What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale 563What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale 564What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale 565What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale 566What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale 567What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale 568What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale 569What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale 570KernelVersion: 2.6.35 571Contact: linux-iio@vger.kernel.org 572Description: 573 Hardware applied calibration scale factor (assumed to fix 574 production inaccuracies). If shared across all channels, 575 <type>_calibscale is used. 576 577What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender 578What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender 579What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender 580What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender 581KernelVersion: 4.0 582Contact: linux-iio@vger.kernel.org 583Description: 584 Gender of the user (e.g.: male, female) used by some pedometers 585 to compute the stride length, distance, speed and activity 586 type. 587 588What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available 589What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available 590What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available 591What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available 592KernelVersion: 4.0 593Contact: linux-iio@vger.kernel.org 594Description: 595 Lists all available gender values (e.g.: male, female). 596 597What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight 598What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight 599What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight 600What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight 601KernelVersion: 3.19 602Contact: linux-iio@vger.kernel.org 603Description: 604 Height of the user (in meters) used by some pedometers 605 to compute the stride length, distance, speed and activity 606 type. 607 608What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight 609KernelVersion: 4.0 610Contact: linux-iio@vger.kernel.org 611Description: 612 Weight of the user (in kg). It is needed by some pedometers 613 to compute the calories burnt by the user. 614 615What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available 616What: /sys/.../iio:deviceX/in_anglvel_scale_available 617What: /sys/.../iio:deviceX/in_magn_scale_available 618What: /sys/.../iio:deviceX/in_illuminance_scale_available 619What: /sys/.../iio:deviceX/in_intensity_scale_available 620What: /sys/.../iio:deviceX/in_proximity_scale_available 621What: /sys/.../iio:deviceX/in_voltageX_scale_available 622What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available 623What: /sys/.../iio:deviceX/out_voltageX_scale_available 624What: /sys/.../iio:deviceX/out_altvoltageX_scale_available 625What: /sys/.../iio:deviceX/in_capacitance_scale_available 626What: /sys/.../iio:deviceX/in_pressure_scale_available 627What: /sys/.../iio:deviceX/in_pressureY_scale_available 628KernelVersion: 2.6.35 629Contact: linux-iio@vger.kernel.org 630Description: 631 If a discrete set of scale values is available, they 632 are listed in this attribute. Unlike illumination, 633 multiplying intensity by intensity_scale does not 634 yield value with any standardized unit. 635 636What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain 637What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain 638What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain 639What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain 640What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain 641What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain 642KernelVersion: 2.6.35 643Contact: linux-iio@vger.kernel.org 644Description: 645 Hardware applied gain factor. If shared across all channels, 646 <type>_hardwaregain is used. 647 648What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available 649KernelVersion: 5.10 650Contact: linux-iio@vger.kernel.org 651Description: 652 Lists all available hardware applied gain factors. Shared across all 653 channels. 654 655What: /sys/.../in_accel_filter_low_pass_3db_frequency 656What: /sys/.../in_magn_filter_low_pass_3db_frequency 657What: /sys/.../in_anglvel_filter_low_pass_3db_frequency 658KernelVersion: 3.2 659Contact: linux-iio@vger.kernel.org 660Description: 661 If a known or controllable low pass filter is applied 662 to the underlying data channel, then this parameter 663 gives the 3dB frequency of the filter in Hz. 664 665What: /sys/.../in_accel_filter_high_pass_3db_frequency 666What: /sys/.../in_anglvel_filter_high_pass_3db_frequency 667What: /sys/.../in_magn_filter_high_pass_3db_frequency 668KernelVersion: 4.2 669Contact: linux-iio@vger.kernel.org 670Description: 671 If a known or controllable high pass filter is applied 672 to the underlying data channel, then this parameter 673 gives the 3dB frequency of the filter in Hz. 674 675What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw 676What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw 677KernelVersion: 2.6.37 678Contact: linux-iio@vger.kernel.org 679Description: 680 Raw (unscaled, no bias etc.) output voltage for 681 channel Y. The number must always be specified and 682 unique if the output corresponds to a single channel. 683 While DAC like devices typically use out_voltage, 684 a continuous frequency generating device, such as 685 a DDS or PLL should use out_altvoltage. 686 687What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw 688What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw 689KernelVersion: 2.6.37 690Contact: linux-iio@vger.kernel.org 691Description: 692 Raw (unscaled, no bias etc.) output voltage for an aggregate of 693 channel Y, channel Z, etc. This interface is available in cases 694 where a single output sets the value for multiple channels 695 simultaneously. 696 697What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode 698What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode 699What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode 700What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode 701KernelVersion: 2.6.38 702Contact: linux-iio@vger.kernel.org 703Description: 704 Specifies the output powerdown mode. 705 DAC output stage is disconnected from the amplifier and 706 1kohm_to_gnd: connected to ground via an 1kOhm resistor, 707 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor, 708 6kohm_to_gnd: connected to ground via a 6kOhm resistor, 709 20kohm_to_gnd: connected to ground via a 20kOhm resistor, 710 90kohm_to_gnd: connected to ground via a 90kOhm resistor, 711 100kohm_to_gnd: connected to ground via an 100kOhm resistor, 712 125kohm_to_gnd: connected to ground via an 125kOhm resistor, 713 500kohm_to_gnd: connected to ground via a 500kOhm resistor, 714 640kohm_to_gnd: connected to ground via a 640kOhm resistor, 715 three_state: left floating. 716 For a list of available output power down options read 717 outX_powerdown_mode_available. If Y is not present the 718 mode is shared across all outputs. 719 720What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available 721What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available 722What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available 723What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available 724KernelVersion: 2.6.38 725Contact: linux-iio@vger.kernel.org 726Description: 727 Lists all available output power down modes. 728 If Y is not present the mode is shared across all outputs. 729 730What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown 731What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown 732What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown 733What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown 734KernelVersion: 2.6.38 735Contact: linux-iio@vger.kernel.org 736Description: 737 Writing 1 causes output Y to enter the power down mode specified 738 by the corresponding outY_powerdown_mode. DAC output stage is 739 disconnected from the amplifier. Clearing returns to normal 740 operation. Y may be suppressed if all outputs are controlled 741 together. 742 743What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency 744KernelVersion: 3.4.0 745Contact: linux-iio@vger.kernel.org 746Description: 747 Output frequency for channel Y in Hz. The number must always be 748 specified and unique if the output corresponds to a single 749 channel. 750 Some drivers have additional constraints: 751 ADF4371 has an integrated VCO with fundamendal output 752 frequency ranging from 4000000000 Hz 8000000000 Hz. 753 754 out_altvoltage0_frequency: 755 A divide by 1, 2, 4, 8, 16, 32 or circuit generates 756 frequencies from 62500000 Hz to 8000000000 Hz. 757 out_altvoltage1_frequency: 758 This channel duplicates the channel 0 frequency 759 out_altvoltage2_frequency: 760 A frequency doubler generates frequencies from 761 8000000000 Hz to 16000000000 Hz. 762 out_altvoltage3_frequency: 763 A frequency quadrupler generates frequencies from 764 16000000000 Hz to 32000000000 Hz. 765 766 Note: writes to one of the channels will affect the frequency of 767 all the other channels, since it involves changing the VCO 768 fundamental output frequency. 769 770What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase 771KernelVersion: 3.4.0 772Contact: linux-iio@vger.kernel.org 773Description: 774 Phase in radians of one frequency/clock output Y 775 (out_altvoltageY) relative to another frequency/clock output 776 (out_altvoltageZ) of the device X. The number must always be 777 specified and unique if the output corresponds to a single 778 channel. 779 780What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw 781Date: May 2012 782KernelVersion: 3.5 783Contact: Johan Hovold <jhovold@gmail.com> 784Description: 785 Set/get output current for channel Y. Units after application 786 of scale and offset are milliamps. 787 For some devices current channels are used to specify 788 current supplied to elements used in taking a measurement 789 of a different type. E.g. LED currents. 790 791What: /sys/bus/iio/devices/iio:deviceX/events 792KernelVersion: 2.6.35 793Contact: linux-iio@vger.kernel.org 794Description: 795 Configuration of which hardware generated events are passed up 796 to user-space. 797 798What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en 799What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en 800What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en 801What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en 802What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en 803What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en 804What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en 805What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en 806What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en 807What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en 808What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en 809What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en 810What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en 811What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en 812What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en 813What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en 814What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en 815What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en 816What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en 817What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en 818What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en 819What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en 820What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en 821What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en 822What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en 823What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en 824What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en 825What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en 826What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en 827What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en 828What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en 829What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en 830What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en 831What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en 832What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_en 833KernelVersion: 2.6.37 834Contact: linux-iio@vger.kernel.org 835Description: 836 Event generated when channel passes a threshold in the specified 837 (_rising|_falling) direction. If the direction is not specified, 838 then either the device will report an event which ever direction 839 a single threshold value is passed in (e.g. 840 <type>[Y][_name]_<raw|input>_thresh_value) or 841 <type>[Y][_name]_<raw|input>_thresh_rising_value and 842 <type>[Y][_name]_<raw|input>_thresh_falling_value may take 843 different values, but the device can only enable both thresholds 844 or neither. 845 846 Note the driver will assume the last p events requested are 847 to be enabled where p is how many it supports (which may vary 848 depending on the exact set requested. So if you want to be 849 sure you have set what you think you have, check the contents of 850 these attributes after everything is configured. Drivers may 851 have to buffer any parameters so that they are consistent when 852 a given event type is enabled at a future point (and not those for 853 whatever event was previously enabled). 854 855What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en 856What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en 857What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en 858What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en 859What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en 860What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en 861What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en 862What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en 863What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en 864What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en 865What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en 866What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en 867What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en 868What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en 869What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en 870What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en 871What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en 872What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en 873What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en 874What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en 875What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en 876What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en 877What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en 878What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en 879What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en 880What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en 881What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en 882What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en 883What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en 884What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en 885What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en 886What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en 887KernelVersion: 2.6.37 888Contact: linux-iio@vger.kernel.org 889Description: 890 Event generated when channel passes a threshold on the rate of 891 change (1st differential) in the specified (_rising|_falling) 892 direction. If the direction is not specified, then either the 893 device will report an event which ever direction a single 894 threshold value is passed in (e.g. 895 <type>[Y][_name]_<raw|input>_roc_value) or 896 <type>[Y][_name]_<raw|input>_roc_rising_value and 897 <type>[Y][_name]_<raw|input>_roc_falling_value may take 898 different values, but the device can only enable both rate of 899 change thresholds or neither. 900 901 Note the driver will assume the last p events requested are 902 to be enabled where p is however many it supports (which may 903 vary depending on the exact set requested. So if you want to be 904 sure you have set what you think you have, check the contents of 905 these attributes after everything is configured. Drivers may 906 have to buffer any parameters so that they are consistent when 907 a given event type is enabled a future point (and not those for 908 whatever event was previously enabled). 909 910What: /sys/.../events/in_capacitanceY_adaptive_thresh_rising_en 911What: /sys/.../events/in_capacitanceY_adaptive_thresh_falling_en 912KernelVersion: 5.13 913Contact: linux-iio@vger.kernel.org 914Description: 915 Adaptive thresholds are similar to normal fixed thresholds 916 but the value is expressed as an offset from a value which 917 provides a low frequency approximation of the channel itself. 918 Thus these detect if a rapid change occurs in the specified 919 direction which crosses tracking value + offset. 920 Tracking value calculation is devices specific. 921 922What: /sys/.../in_capacitanceY_adaptive_thresh_rising_timeout 923What: /sys/.../in_capacitanceY_adaptive_thresh_falling_timeout 924KernelVersion: 5.11 925Contact: linux-iio@vger.kernel.org 926Description: 927 When adaptive thresholds are used, the tracking signal 928 may adjust too slowly to step changes in the raw signal. 929 Thus these specify the time in seconds for which the 930 difference between the slow tracking signal and the raw 931 signal is allowed to remain out-of-range before a reset 932 event occurs in which the tracking signal is made equal 933 to the raw signal, allowing slow tracking to resume and the 934 adaptive threshold event detection to function as expected. 935 936What: /sys/.../events/in_accel_thresh_rising_value 937What: /sys/.../events/in_accel_thresh_falling_value 938What: /sys/.../events/in_accel_x_raw_thresh_rising_value 939What: /sys/.../events/in_accel_x_raw_thresh_falling_value 940What: /sys/.../events/in_accel_y_raw_thresh_rising_value 941What: /sys/.../events/in_accel_y_raw_thresh_falling_value 942What: /sys/.../events/in_accel_z_raw_thresh_rising_value 943What: /sys/.../events/in_accel_z_raw_thresh_falling_value 944What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value 945What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value 946What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value 947What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value 948What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value 949What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value 950What: /sys/.../events/in_magn_x_raw_thresh_rising_value 951What: /sys/.../events/in_magn_x_raw_thresh_falling_value 952What: /sys/.../events/in_magn_y_raw_thresh_rising_value 953What: /sys/.../events/in_magn_y_raw_thresh_falling_value 954What: /sys/.../events/in_magn_z_raw_thresh_rising_value 955What: /sys/.../events/in_magn_z_raw_thresh_falling_value 956What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value 957What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value 958What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value 959What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value 960What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value 961What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value 962What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value 963What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value 964What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value 965What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value 966What: /sys/.../events/in_voltageY_raw_thresh_rising_value 967What: /sys/.../events/in_voltageY_raw_thresh_falling_value 968What: /sys/.../events/in_tempY_raw_thresh_rising_value 969What: /sys/.../events/in_tempY_raw_thresh_falling_value 970What: /sys/.../events/in_illuminance0_thresh_falling_value 971What: /sys/.../events/in_illuminance0_thresh_rising_value 972What: /sys/.../events/in_proximity0_thresh_falling_value 973What: /sys/.../events/in_proximity0_thresh_rising_value 974What: /sys/.../events/in_illuminance_thresh_rising_value 975What: /sys/.../events/in_illuminance_thresh_falling_value 976What: /sys/.../events/in_capacitanceY_thresh_rising_value 977What: /sys/.../events/in_capacitanceY_thresh_falling_value 978What: /sys/.../events/in_capacitanceY_thresh_adaptive_rising_value 979What: /sys/.../events/in_capacitanceY_thresh_falling_rising_value 980KernelVersion: 2.6.37 981Contact: linux-iio@vger.kernel.org 982Description: 983 Specifies the value of threshold that the device is comparing 984 against for the events enabled by 985 <type>Y[_name]_thresh[_rising|falling]_en. 986 987 If separate attributes exist for the two directions, but 988 direction is not specified for this attribute, then a single 989 threshold value applies to both directions. 990 991 The raw or input element of the name indicates whether the 992 value is in raw device units or in processed units (as _raw 993 and _input do on sysfs direct channel read attributes). 994 995What: /sys/.../events/in_accel_scale 996What: /sys/.../events/in_accel_peak_scale 997What: /sys/.../events/in_anglvel_scale 998What: /sys/.../events/in_magn_scale 999What: /sys/.../events/in_rot_from_north_magnetic_scale 1000What: /sys/.../events/in_rot_from_north_true_scale 1001What: /sys/.../events/in_voltage_scale 1002What: /sys/.../events/in_voltage_supply_scale 1003What: /sys/.../events/in_temp_scale 1004What: /sys/.../events/in_illuminance_scale 1005What: /sys/.../events/in_proximity_scale 1006KernelVersion: 3.21 1007Contact: linux-iio@vger.kernel.org 1008Description: 1009 Specifies the conversion factor from the standard units 1010 to device specific units used to set the event trigger 1011 threshold. 1012 1013What: /sys/.../events/in_accel_x_thresh_rising_hysteresis 1014What: /sys/.../events/in_accel_x_thresh_falling_hysteresis 1015What: /sys/.../events/in_accel_x_thresh_either_hysteresis 1016What: /sys/.../events/in_accel_y_thresh_rising_hysteresis 1017What: /sys/.../events/in_accel_y_thresh_falling_hysteresis 1018What: /sys/.../events/in_accel_y_thresh_either_hysteresis 1019What: /sys/.../events/in_accel_z_thresh_rising_hysteresis 1020What: /sys/.../events/in_accel_z_thresh_falling_hysteresis 1021What: /sys/.../events/in_accel_z_thresh_either_hysteresis 1022What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis 1023What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis 1024What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis 1025What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis 1026What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis 1027What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis 1028What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis 1029What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis 1030What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis 1031What: /sys/.../events/in_magn_x_thresh_rising_hysteresis 1032What: /sys/.../events/in_magn_x_thresh_falling_hysteresis 1033What: /sys/.../events/in_magn_x_thresh_either_hysteresis 1034What: /sys/.../events/in_magn_y_thresh_rising_hysteresis 1035What: /sys/.../events/in_magn_y_thresh_falling_hysteresis 1036What: /sys/.../events/in_magn_y_thresh_either_hysteresis 1037What: /sys/.../events/in_magn_z_thresh_rising_hysteresis 1038What: /sys/.../events/in_magn_z_thresh_falling_hysteresis 1039What: /sys/.../events/in_magn_z_thresh_either_hysteresis 1040What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis 1041What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis 1042What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis 1043What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis 1044What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis 1045What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis 1046What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis 1047What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis 1048What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis 1049What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis 1050What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis 1051What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis 1052What: /sys/.../events/in_voltageY_thresh_rising_hysteresis 1053What: /sys/.../events/in_voltageY_thresh_falling_hysteresis 1054What: /sys/.../events/in_voltageY_thresh_either_hysteresis 1055What: /sys/.../events/in_tempY_thresh_rising_hysteresis 1056What: /sys/.../events/in_tempY_thresh_falling_hysteresis 1057What: /sys/.../events/in_tempY_thresh_either_hysteresis 1058What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis 1059What: /sys/.../events/in_illuminance0_thresh_rising_hysteresis 1060What: /sys/.../events/in_illuminance0_thresh_either_hysteresis 1061What: /sys/.../events/in_proximity0_thresh_falling_hysteresis 1062What: /sys/.../events/in_proximity0_thresh_rising_hysteresis 1063What: /sys/.../events/in_proximity0_thresh_either_hysteresis 1064KernelVersion: 3.13 1065Contact: linux-iio@vger.kernel.org 1066Description: 1067 Specifies the hysteresis of threshold that the device is comparing 1068 against for the events enabled by 1069 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis. 1070 If separate attributes exist for the two directions, but 1071 direction is not specified for this attribute, then a single 1072 hysteresis value applies to both directions. 1073 1074 For falling events the hysteresis is added to the _value attribute for 1075 this event to get the upper threshold for when the event goes back to 1076 normal, for rising events the hysteresis is subtracted from the _value 1077 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200 1078 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event 1079 will get activated once in_voltage0_raw goes above 1200 and will become 1080 deactivated again once the value falls below 1150. 1081 1082What: /sys/.../events/in_accel_x_raw_roc_rising_value 1083What: /sys/.../events/in_accel_x_raw_roc_falling_value 1084What: /sys/.../events/in_accel_y_raw_roc_rising_value 1085What: /sys/.../events/in_accel_y_raw_roc_falling_value 1086What: /sys/.../events/in_accel_z_raw_roc_rising_value 1087What: /sys/.../events/in_accel_z_raw_roc_falling_value 1088What: /sys/.../events/in_anglvel_x_raw_roc_rising_value 1089What: /sys/.../events/in_anglvel_x_raw_roc_falling_value 1090What: /sys/.../events/in_anglvel_y_raw_roc_rising_value 1091What: /sys/.../events/in_anglvel_y_raw_roc_falling_value 1092What: /sys/.../events/in_anglvel_z_raw_roc_rising_value 1093What: /sys/.../events/in_anglvel_z_raw_roc_falling_value 1094What: /sys/.../events/in_magn_x_raw_roc_rising_value 1095What: /sys/.../events/in_magn_x_raw_roc_falling_value 1096What: /sys/.../events/in_magn_y_raw_roc_rising_value 1097What: /sys/.../events/in_magn_y_raw_roc_falling_value 1098What: /sys/.../events/in_magn_z_raw_roc_rising_value 1099What: /sys/.../events/in_magn_z_raw_roc_falling_value 1100What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value 1101What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value 1102What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value 1103What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value 1104What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value 1105What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value 1106What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value 1107What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value 1108What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value 1109What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value 1110What: /sys/.../events/in_voltageY_raw_roc_rising_value 1111What: /sys/.../events/in_voltageY_raw_roc_falling_value 1112What: /sys/.../events/in_tempY_raw_roc_rising_value 1113What: /sys/.../events/in_tempY_raw_roc_falling_value 1114KernelVersion: 2.6.37 1115Contact: linux-iio@vger.kernel.org 1116Description: 1117 Specifies the value of rate of change threshold that the 1118 device is comparing against for the events enabled by 1119 <type>[Y][_name]_roc[_rising|falling]_en. 1120 1121 If separate attributes exist for the two directions, 1122 but direction is not specified for this attribute, 1123 then a single threshold value applies to both directions. 1124 The raw or input element of the name indicates whether the 1125 value is in raw device units or in processed units (as _raw 1126 and _input do on sysfs direct channel read attributes). 1127 1128What: /sys/.../events/in_accel_x_thresh_rising_period 1129What: /sys/.../events/in_accel_x_thresh_falling_period 1130What: /sys/.../events/in_accel_x_roc_rising_period 1131What: /sys/.../events/in_accel_x_roc_falling_period 1132What: /sys/.../events/in_accel_y_thresh_rising_period 1133What: /sys/.../events/in_accel_y_thresh_falling_period 1134What: /sys/.../events/in_accel_y_roc_rising_period 1135What: /sys/.../events/in_accel_y_roc_falling_period 1136What: /sys/.../events/in_accel_z_thresh_rising_period 1137What: /sys/.../events/in_accel_z_thresh_falling_period 1138What: /sys/.../events/in_accel_z_roc_rising_period 1139What: /sys/.../events/in_accel_z_roc_falling_period 1140What: /sys/.../events/in_anglvel_x_thresh_rising_period 1141What: /sys/.../events/in_anglvel_x_thresh_falling_period 1142What: /sys/.../events/in_anglvel_x_roc_rising_period 1143What: /sys/.../events/in_anglvel_x_roc_falling_period 1144What: /sys/.../events/in_anglvel_y_thresh_rising_period 1145What: /sys/.../events/in_anglvel_y_thresh_falling_period 1146What: /sys/.../events/in_anglvel_y_roc_rising_period 1147What: /sys/.../events/in_anglvel_y_roc_falling_period 1148What: /sys/.../events/in_anglvel_z_thresh_rising_period 1149What: /sys/.../events/in_anglvel_z_thresh_falling_period 1150What: /sys/.../events/in_anglvel_z_roc_rising_period 1151What: /sys/.../events/in_anglvel_z_roc_falling_period 1152What: /sys/.../events/in_magn_x_thresh_rising_period 1153What: /sys/.../events/in_magn_x_thresh_falling_period 1154What: /sys/.../events/in_magn_x_roc_rising_period 1155What: /sys/.../events/in_magn_x_roc_falling_period 1156What: /sys/.../events/in_magn_y_thresh_rising_period 1157What: /sys/.../events/in_magn_y_thresh_falling_period 1158What: /sys/.../events/in_magn_y_roc_rising_period 1159What: /sys/.../events/in_magn_y_roc_falling_period 1160What: /sys/.../events/in_magn_z_thresh_rising_period 1161What: /sys/.../events/in_magn_z_thresh_falling_period 1162What: /sys/.../events/in_magn_z_roc_rising_period 1163What: /sys/.../events/in_magn_z_roc_falling_period 1164What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period 1165What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period 1166What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period 1167What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period 1168What: /sys/.../events/in_rot_from_north_true_thresh_rising_period 1169What: /sys/.../events/in_rot_from_north_true_thresh_falling_period 1170What: /sys/.../events/in_rot_from_north_true_roc_rising_period 1171What: /sys/.../events/in_rot_from_north_true_roc_falling_period 1172What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period 1173What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period 1174What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period 1175What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period 1176What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period 1177What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period 1178What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period 1179What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period 1180What: /sys/.../events/in_voltageY_supply_thresh_rising_period 1181What: /sys/.../events/in_voltageY_supply_thresh_falling_period 1182What: /sys/.../events/in_voltageY_supply_roc_rising_period 1183What: /sys/.../events/in_voltageY_supply_roc_falling_period 1184What: /sys/.../events/in_voltageY_thresh_rising_period 1185What: /sys/.../events/in_voltageY_thresh_falling_period 1186What: /sys/.../events/in_voltageY_roc_rising_period 1187What: /sys/.../events/in_voltageY_roc_falling_period 1188What: /sys/.../events/in_tempY_thresh_rising_period 1189What: /sys/.../events/in_tempY_thresh_falling_period 1190What: /sys/.../events/in_tempY_roc_rising_period 1191What: /sys/.../events/in_tempY_roc_falling_period 1192What: /sys/.../events/in_accel_x&y&z_mag_falling_period 1193What: /sys/.../events/in_intensity0_thresh_period 1194What: /sys/.../events/in_proximity0_thresh_period 1195What: /sys/.../events/in_activity_still_thresh_rising_period 1196What: /sys/.../events/in_activity_still_thresh_falling_period 1197What: /sys/.../events/in_activity_walking_thresh_rising_period 1198What: /sys/.../events/in_activity_walking_thresh_falling_period 1199What: /sys/.../events/in_activity_jogging_thresh_rising_period 1200What: /sys/.../events/in_activity_jogging_thresh_falling_period 1201What: /sys/.../events/in_activity_running_thresh_rising_period 1202What: /sys/.../events/in_activity_running_thresh_falling_period 1203What: /sys/.../events/in_illuminance_thresh_either_period 1204KernelVersion: 2.6.37 1205Contact: linux-iio@vger.kernel.org 1206Description: 1207 Period of time (in seconds) for which the condition must be 1208 met before an event is generated. If direction is not 1209 specified then this period applies to both directions. 1210 1211What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db 1212What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db 1213What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db 1214KernelVersion: 4.2 1215Contact: linux-iio@vger.kernel.org 1216Description: 1217 If a low pass filter can be applied to the event generation 1218 this property gives its 3db frequency in Hz. 1219 A value of zero disables the filter. 1220 1221What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db 1222What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db 1223What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db 1224KernelVersion: 4.2 1225Contact: linux-iio@vger.kernel.org 1226Description: 1227 If a high pass filter can be applied to the event generation 1228 this property gives its 3db frequency in Hz. 1229 A value of zero disables the filter. 1230 1231What: /sys/.../events/in_activity_still_thresh_rising_en 1232What: /sys/.../events/in_activity_still_thresh_falling_en 1233What: /sys/.../events/in_activity_walking_thresh_rising_en 1234What: /sys/.../events/in_activity_walking_thresh_falling_en 1235What: /sys/.../events/in_activity_jogging_thresh_rising_en 1236What: /sys/.../events/in_activity_jogging_thresh_falling_en 1237What: /sys/.../events/in_activity_running_thresh_rising_en 1238What: /sys/.../events/in_activity_running_thresh_falling_en 1239KernelVersion: 3.19 1240Contact: linux-iio@vger.kernel.org 1241Description: 1242 Enables or disables activity events. Depending on direction 1243 an event is generated when sensor ENTERS or LEAVES a given state. 1244 1245What: /sys/.../events/in_activity_still_thresh_rising_value 1246What: /sys/.../events/in_activity_still_thresh_falling_value 1247What: /sys/.../events/in_activity_walking_thresh_rising_value 1248What: /sys/.../events/in_activity_walking_thresh_falling_value 1249What: /sys/.../events/in_activity_jogging_thresh_rising_value 1250What: /sys/.../events/in_activity_jogging_thresh_falling_value 1251What: /sys/.../events/in_activity_running_thresh_rising_value 1252What: /sys/.../events/in_activity_running_thresh_falling_value 1253KernelVersion: 3.19 1254Contact: linux-iio@vger.kernel.org 1255Description: 1256 Confidence value (in units as percentage) to be used 1257 for deciding when an event should be generated. E.g for 1258 running: If the confidence value reported by the sensor 1259 is greater than in_activity_running_thresh_rising_value 1260 then the sensor ENTERS running state. Conversely, if the 1261 confidence value reported by the sensor is lower than 1262 in_activity_running_thresh_falling_value then the sensor 1263 is LEAVING running state. 1264 1265What: /sys/.../iio:deviceX/events/in_accel_mag_en 1266What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en 1267What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en 1268What: /sys/.../iio:deviceX/events/in_accel_x_mag_en 1269What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en 1270What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en 1271What: /sys/.../iio:deviceX/events/in_accel_y_mag_en 1272What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en 1273What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en 1274What: /sys/.../iio:deviceX/events/in_accel_z_mag_en 1275What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en 1276What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en 1277What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en 1278What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en 1279KernelVersion: 2.6.37 1280Contact: linux-iio@vger.kernel.org 1281Description: 1282 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the 1283 magnitude of the channel is compared to the threshold, not its 1284 signed value. 1285 1286What: /sys/.../events/in_accel_raw_mag_value 1287What: /sys/.../events/in_accel_x_raw_mag_rising_value 1288What: /sys/.../events/in_accel_y_raw_mag_rising_value 1289What: /sys/.../events/in_accel_z_raw_mag_rising_value 1290KernelVersion: 2.6.37 1291Contact: linux-iio@vger.kernel.org 1292Description: 1293 The value to which the magnitude of the channel is compared. If 1294 number or direction is not specified, applies to all channels of 1295 this type. 1296 1297What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_en 1298What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en 1299What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en 1300What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en 1301What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en 1302What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_en 1303KernelVersion: 5.18 1304Contact: linux-iio@vger.kernel.org 1305Description: 1306 Similar to in_accel_mag[_y][_rising|_falling]_en, but the event 1307 value is relative to a reference magnitude. The reference magnitude 1308 includes the graviational acceleration. 1309 1310What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_value 1311What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value 1312What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value 1313What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value 1314What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value 1315What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_value 1316KernelVersion: 5.18 1317Contact: linux-iio@vger.kernel.org 1318Description: 1319 The value to which the reference magnitude of the channel is 1320 compared. If the axis is not specified, it applies to all channels 1321 of this type. 1322 1323What: /sys/.../events/in_steps_change_en 1324KernelVersion: 4.0 1325Contact: linux-iio@vger.kernel.org 1326Description: 1327 Event generated when channel passes a threshold on the absolute 1328 change in value. E.g. for steps: a step change event is 1329 generated each time the user takes N steps, where N is set using 1330 in_steps_change_value. 1331 1332What: /sys/.../events/in_steps_change_value 1333KernelVersion: 4.0 1334Contact: linux-iio@vger.kernel.org 1335Description: 1336 Specifies the value of change threshold that the 1337 device is comparing against for the events enabled by 1338 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps: 1339 if set to 3, a step change event will be generated every 3 1340 steps. 1341 1342What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger 1343KernelVersion: 2.6.35 1344Contact: linux-iio@vger.kernel.org 1345Description: 1346 The name of the trigger source being used, as per string given 1347 in /sys/class/iio/triggerY/name. 1348 1349What: /sys/bus/iio/devices/iio:deviceX/bufferY/length 1350KernelVersion: 5.11 1351Contact: linux-iio@vger.kernel.org 1352Description: 1353 Number of scans contained by the buffer. 1354 1355What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable 1356KernelVersion: 5.11 1357Contact: linux-iio@vger.kernel.org 1358Description: 1359 Actually start the buffer capture up. Will start trigger 1360 if first device and appropriate. 1361 1362 Note that it might be impossible to configure other attributes, 1363 (e.g.: events, scale, sampling rate) if they impact the currently 1364 active buffer capture session. 1365 1366What: /sys/bus/iio/devices/iio:deviceX/bufferY 1367KernelVersion: 5.11 1368Contact: linux-iio@vger.kernel.org 1369Description: 1370 Directory containing interfaces for elements that will be 1371 captured for a single triggered sample set in the buffer. 1372 1373 Since kernel 5.11 the scan_elements attributes are merged into 1374 the bufferY directory, to be configurable per buffer. 1375 1376What: /sys/.../iio:deviceX/bufferY/in_accel_x_en 1377What: /sys/.../iio:deviceX/bufferY/in_accel_y_en 1378What: /sys/.../iio:deviceX/bufferY/in_accel_z_en 1379What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_en 1380What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_en 1381What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_en 1382What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_en 1383What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_en 1384What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_en 1385What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en 1386What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en 1387What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en 1388What: /sys/.../iio:deviceX/bufferY/in_magn_x_en 1389What: /sys/.../iio:deviceX/bufferY/in_magn_y_en 1390What: /sys/.../iio:deviceX/bufferY/in_magn_z_en 1391What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en 1392What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en 1393What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en 1394What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en 1395What: /sys/.../iio:deviceX/bufferY/in_timestamp_en 1396What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en 1397What: /sys/.../iio:deviceX/bufferY/in_voltageY_en 1398What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en 1399What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_en 1400What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_en 1401What: /sys/.../iio:deviceX/bufferY/in_voltage_i_en 1402What: /sys/.../iio:deviceX/bufferY/in_voltage_q_en 1403What: /sys/.../iio:deviceX/bufferY/in_incli_x_en 1404What: /sys/.../iio:deviceX/bufferY/in_incli_y_en 1405What: /sys/.../iio:deviceX/bufferY/in_pressureY_en 1406What: /sys/.../iio:deviceX/bufferY/in_pressure_en 1407What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_en 1408What: /sys/.../iio:deviceX/bufferY/in_proximity_en 1409KernelVersion: 5.11 1410Contact: linux-iio@vger.kernel.org 1411Description: 1412 Scan element control for triggered data capture. 1413 1414What: /sys/.../iio:deviceX/bufferY/in_accel_type 1415What: /sys/.../iio:deviceX/bufferY/in_deltaangl_type 1416What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_type 1417What: /sys/.../iio:deviceX/bufferY/in_anglvel_type 1418What: /sys/.../iio:deviceX/bufferY/in_magn_type 1419What: /sys/.../iio:deviceX/bufferY/in_incli_type 1420What: /sys/.../iio:deviceX/bufferY/in_voltageY_type 1421What: /sys/.../iio:deviceX/bufferY/in_voltage_type 1422What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type 1423What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_type 1424What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_type 1425What: /sys/.../iio:deviceX/bufferY/in_voltage_i_type 1426What: /sys/.../iio:deviceX/bufferY/in_voltage_q_type 1427What: /sys/.../iio:deviceX/bufferY/in_timestamp_type 1428What: /sys/.../iio:deviceX/bufferY/in_pressureY_type 1429What: /sys/.../iio:deviceX/bufferY/in_pressure_type 1430What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_type 1431What: /sys/.../iio:deviceX/bufferY/in_proximity_type 1432KernelVersion: 5.11 1433Contact: linux-iio@vger.kernel.org 1434Description: 1435 Description of the scan element data storage within the buffer 1436 and hence the form in which it is read from user-space. 1437 Form is [be|le]:[s|u]bits/storagebits[>>shift]. 1438 be or le specifies big or little endian. s or u specifies if 1439 signed (2's complement) or unsigned. bits is the number of bits 1440 of data and storagebits is the space (after padding) that it 1441 occupies in the buffer. shift if specified, is the shift that 1442 needs to be applied prior to masking out unused bits. Some 1443 devices put their data in the middle of the transferred elements 1444 with additional information on both sides. Note that some 1445 devices will have additional information in the unused bits 1446 so to get a clean value, the bits value must be used to mask 1447 the buffer output value appropriately. The storagebits value 1448 also specifies the data alignment. So s48/64>>2 will be a 1449 signed 48 bit integer stored in a 64 bit location aligned to 1450 a 64 bit boundary. To obtain the clean value, shift right 2 1451 and apply a mask to zero the top 16 bits of the result. 1452 For other storage combinations this attribute will be extended 1453 appropriately. 1454 1455What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available 1456KernelVersion: 2.6.37 1457Contact: linux-iio@vger.kernel.org 1458Description: 1459 If the type parameter can take one of a small set of values, 1460 this attribute lists them. 1461 1462What: /sys/.../iio:deviceX/bufferY/in_voltageY_index 1463What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index 1464What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index 1465What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_index 1466What: /sys/.../iio:deviceX/bufferY/in_voltage_i_index 1467What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index 1468What: /sys/.../iio:deviceX/bufferY/in_accel_x_index 1469What: /sys/.../iio:deviceX/bufferY/in_accel_y_index 1470What: /sys/.../iio:deviceX/bufferY/in_accel_z_index 1471What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_index 1472What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_index 1473What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_index 1474What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_index 1475What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_index 1476What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_index 1477What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index 1478What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index 1479What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index 1480What: /sys/.../iio:deviceX/bufferY/in_magn_x_index 1481What: /sys/.../iio:deviceX/bufferY/in_magn_y_index 1482What: /sys/.../iio:deviceX/bufferY/in_magn_z_index 1483What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index 1484What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index 1485What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index 1486What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index 1487What: /sys/.../iio:deviceX/bufferY/in_incli_x_index 1488What: /sys/.../iio:deviceX/bufferY/in_incli_y_index 1489What: /sys/.../iio:deviceX/bufferY/in_timestamp_index 1490What: /sys/.../iio:deviceX/bufferY/in_pressureY_index 1491What: /sys/.../iio:deviceX/bufferY/in_pressure_index 1492What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_index 1493What: /sys/.../iio:deviceX/bufferY/in_proximity_index 1494KernelVersion: 5.11 1495Contact: linux-iio@vger.kernel.org 1496Description: 1497 A single positive integer specifying the position of this 1498 scan element in the buffer. Note these are not dependent on 1499 what is enabled and may not be contiguous. Thus for user-space 1500 to establish the full layout these must be used in conjunction 1501 with all _en attributes to establish which channels are present, 1502 and the relevant _type attributes to establish the data storage 1503 format. 1504 1505What: /sys/.../iio:deviceX/in_activity_still_input 1506What: /sys/.../iio:deviceX/in_activity_walking_input 1507What: /sys/.../iio:deviceX/in_activity_jogging_input 1508What: /sys/.../iio:deviceX/in_activity_running_input 1509KernelVersion: 3.19 1510Contact: linux-iio@vger.kernel.org 1511Description: 1512 This attribute is used to read the confidence for an activity 1513 expressed in units as percentage. 1514 1515What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw 1516KernelVersion: 2.6.38 1517Contact: linux-iio@vger.kernel.org 1518Description: 1519 This attribute is used to read the amount of quadrature error 1520 present in the device at a given time. 1521 1522What: /sys/.../iio:deviceX/in_accelX_power_mode 1523KernelVersion: 3.11 1524Contact: linux-iio@vger.kernel.org 1525Description: 1526 Specifies the chip power mode. 1527 low_noise: reduce noise level from ADC, 1528 low_power: enable low current consumption. 1529 For a list of available output power modes read 1530 in_accel_power_mode_available. 1531 1532What: /sys/.../iio:deviceX/in_energy_input 1533What: /sys/.../iio:deviceX/in_energy_raw 1534KernelVersion: 4.0 1535Contact: linux-iio@vger.kernel.org 1536Description: 1537 This attribute is used to read the energy value reported by the 1538 device (e.g.: human activity sensors report energy burnt by the 1539 user). Units after application of scale are Joules. 1540 1541What: /sys/.../iio:deviceX/in_distance_input 1542What: /sys/.../iio:deviceX/in_distance_raw 1543KernelVersion: 4.0 1544Contact: linux-iio@vger.kernel.org 1545Description: 1546 This attribute is used to read the measured distance to an object 1547 or the distance covered by the user since the last reboot while 1548 activated. Units after application of scale are meters. 1549 1550What: /sys/bus/iio/devices/iio:deviceX/store_eeprom 1551KernelVersion: 3.4.0 1552Contact: linux-iio@vger.kernel.org 1553Description: 1554 Writing '1' stores the current device configuration into 1555 on-chip EEPROM. After power-up or chip reset the device will 1556 automatically load the saved configuration. 1557 1558What: /sys/.../iio:deviceX/in_proximity_raw 1559What: /sys/.../iio:deviceX/in_proximity_input 1560What: /sys/.../iio:deviceX/in_proximityY_raw 1561KernelVersion: 3.4 1562Contact: linux-iio@vger.kernel.org 1563Description: 1564 Proximity measurement indicating that some 1565 object is near the sensor, usually by observing 1566 reflectivity of infrared or ultrasound emitted. 1567 1568 Often these sensors are unit less and as such conversion 1569 to SI units is not possible. Higher proximity measurements 1570 indicate closer objects, and vice versa. Units after 1571 application of scale and offset are meters. 1572 1573What: /sys/.../iio:deviceX/in_illuminance_input 1574What: /sys/.../iio:deviceX/in_illuminance_raw 1575What: /sys/.../iio:deviceX/in_illuminanceY_input 1576What: /sys/.../iio:deviceX/in_illuminanceY_raw 1577What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw 1578What: /sys/.../iio:deviceX/in_illuminance_ir_raw 1579What: /sys/.../iio:deviceX/in_illuminance_clear_raw 1580KernelVersion: 3.4 1581Contact: linux-iio@vger.kernel.org 1582Description: 1583 Illuminance measurement, units after application of scale 1584 and offset are lux. 1585 1586What: /sys/.../iio:deviceX/in_intensityY_raw 1587What: /sys/.../iio:deviceX/in_intensityY_ir_raw 1588What: /sys/.../iio:deviceX/in_intensityY_both_raw 1589What: /sys/.../iio:deviceX/in_intensityY_uv_raw 1590What: /sys/.../iio:deviceX/in_intensityY_uva_raw 1591What: /sys/.../iio:deviceX/in_intensityY_uvb_raw 1592What: /sys/.../iio:deviceX/in_intensityY_duv_raw 1593KernelVersion: 3.4 1594Contact: linux-iio@vger.kernel.org 1595Description: 1596 Unit-less light intensity. Modifiers both and ir indicate 1597 that measurements contain visible and infrared light 1598 components or just infrared light, respectively. Modifier 1599 uv indicates that measurements contain ultraviolet light 1600 components. Modifiers uva, uvb and duv indicate that 1601 measurements contain A, B or deep (C) ultraviolet light 1602 components respectively. 1603 1604What: /sys/.../iio:deviceX/in_uvindex_input 1605KernelVersion: 4.6 1606Contact: linux-iio@vger.kernel.org 1607Description: 1608 UV light intensity index measuring the human skin's response to 1609 different wavelength of sunlight weighted according to the 1610 standardised CIE Erythemal Action Spectrum. UV index values range 1611 from 0 (low) to >=11 (extreme). 1612 1613What: /sys/.../iio:deviceX/in_intensity_integration_time 1614What: /sys/.../iio:deviceX/in_intensity_red_integration_time 1615What: /sys/.../iio:deviceX/in_intensity_green_integration_time 1616What: /sys/.../iio:deviceX/in_intensity_blue_integration_time 1617What: /sys/.../iio:deviceX/in_intensity_clear_integration_time 1618What: /sys/.../iio:deviceX/in_illuminance_integration_time 1619KernelVersion: 3.12 1620Contact: linux-iio@vger.kernel.org 1621Description: 1622 This attribute is used to get/set the integration time in 1623 seconds. If shared across all channels of a given type, 1624 <type>_integration_time is used. 1625 1626What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time 1627KernelVersion: 4.0 1628Contact: linux-iio@vger.kernel.org 1629Description: 1630 Number of seconds in which to compute speed. 1631 1632What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw 1633KernelVersion: 3.15 1634Contact: linux-iio@vger.kernel.org 1635Description: 1636 Raw value of quaternion components using a format 1637 x y z w. Here x, y, and z component represents the axis about 1638 which a rotation will occur and w component represents the 1639 amount of rotation. 1640 1641What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw 1642What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw 1643What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw 1644What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw 1645KernelVersion: 3.15 1646Contact: linux-iio@vger.kernel.org 1647Description: 1648 Raw value of rotation from true/magnetic north measured with 1649 or without compensation from tilt sensors. 1650 1651What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw 1652What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw 1653What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw 1654KernelVersion: 3.18 1655Contact: linux-iio@vger.kernel.org 1656Description: 1657 Raw current measurement from channel X. Units are in milliamps 1658 after application of scale and offset. If no offset or scale is 1659 present, output should be considered as processed with the 1660 unit in milliamps. 1661 1662 Channels with 'i' and 'q' modifiers always exist in pairs and both 1663 channels refer to the same signal. The 'i' channel contains the in-phase 1664 component of the signal while the 'q' channel contains the quadrature 1665 component. 1666 1667What: /sys/.../iio:deviceX/in_energy_en 1668What: /sys/.../iio:deviceX/in_distance_en 1669What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en 1670What: /sys/.../iio:deviceX/in_steps_en 1671KernelVersion: 3.19 1672Contact: linux-iio@vger.kernel.org 1673Description: 1674 Activates a device feature that runs in firmware/hardware. 1675 E.g. for steps: the pedometer saves power while not used; 1676 when activated, it will count the steps taken by the user in 1677 firmware and export them through in_steps_input. 1678 1679What: /sys/.../iio:deviceX/in_steps_input 1680KernelVersion: 3.19 1681Contact: linux-iio@vger.kernel.org 1682Description: 1683 This attribute is used to read the number of steps taken by the user 1684 since the last reboot while activated. 1685 1686What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input 1687What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw 1688KernelVersion: 3.19 1689Contact: linux-iio@vger.kernel.org 1690Description: 1691 This attribute is used to read the current speed value of the 1692 user (which is the norm or magnitude of the velocity vector). 1693 Units after application of scale are m/s. 1694 1695What: /sys/.../iio:deviceX/in_steps_debounce_count 1696KernelVersion: 4.0 1697Contact: linux-iio@vger.kernel.org 1698Description: 1699 Specifies the number of steps that must occur within 1700 in_steps_filter_debounce_time for the pedometer to decide the 1701 consumer is making steps. 1702 1703What: /sys/.../iio:deviceX/in_steps_debounce_time 1704KernelVersion: 4.0 1705Contact: linux-iio@vger.kernel.org 1706Description: 1707 Specifies number of seconds in which we compute the steps 1708 that occur in order to decide if the consumer is making steps. 1709 1710What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark 1711KernelVersion: 5.11 1712Contact: linux-iio@vger.kernel.org 1713Description: 1714 A single positive integer specifying the maximum number of scan 1715 elements to wait for. 1716 1717 Poll will block until the watermark is reached. 1718 1719 Blocking read will wait until the minimum between the requested 1720 read amount or the low water mark is available. 1721 1722 Non-blocking read will retrieve the available samples from the 1723 buffer even if there are less samples then watermark level. This 1724 allows the application to block on poll with a timeout and read 1725 the available samples after the timeout expires and thus have a 1726 maximum delay guarantee. 1727 1728What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available 1729KernelVersion: 5.11 1730Contact: linux-iio@vger.kernel.org 1731Description: 1732 A read-only value indicating the bytes of data available in the 1733 buffer. In the case of an output buffer, this indicates the 1734 amount of empty space available to write data to. In the case of 1735 an input buffer, this indicates the amount of data available for 1736 reading. 1737 1738What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled 1739KernelVersion: 4.2 1740Contact: linux-iio@vger.kernel.org 1741Description: 1742 A read-only boolean value that indicates if the hardware fifo is 1743 currently enabled or disabled. If the device does not have a 1744 hardware fifo this entry is not present. 1745 The hardware fifo is enabled when the buffer is enabled if the 1746 current hardware fifo watermark level is set and other current 1747 device settings allows it (e.g. if a trigger is set that samples 1748 data differently that the hardware fifo does then hardware fifo 1749 will not enabled). 1750 1751 If the hardware fifo is enabled and the level of the hardware 1752 fifo reaches the hardware fifo watermark level the device will 1753 flush its hardware fifo to the device buffer. Doing a non 1754 blocking read on the device when no samples are present in the 1755 device buffer will also force a flush. 1756 1757 When the hardware fifo is enabled there is no need to use a 1758 trigger to use buffer mode since the watermark settings 1759 guarantees that the hardware fifo is flushed to the device 1760 buffer. 1761 1762What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout 1763KernelVersion: 4.12 1764Contact: linux-iio@vger.kernel.org 1765Description: 1766 A read/write property to provide capability to delay reporting of 1767 samples till a timeout is reached. This allows host processors to 1768 sleep, while the sensor is storing samples in its internal fifo. 1769 The maximum timeout in seconds can be specified by setting 1770 hwfifo_timeout.The current delay can be read by reading 1771 hwfifo_timeout. A value of 0 means that there is no timeout. 1772 1773What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark 1774KernelVersion: 4.2 1775Contact: linux-iio@vger.kernel.org 1776Description: 1777 Read-only entry that contains a single integer specifying the 1778 current watermark level for the hardware fifo. If the device 1779 does not have a hardware fifo this entry is not present. 1780 The watermark level for the hardware fifo is set by the driver 1781 based on the value set by the user in buffer/watermark but 1782 taking into account hardware limitations (e.g. most hardware 1783 buffers are limited to 32-64 samples, some hardware buffers 1784 watermarks are fixed or have minimum levels). A value of 0 1785 means that the hardware watermark is unset. 1786 1787What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min 1788KernelVersion: 4.2 1789Contact: linux-iio@vger.kernel.org 1790Description: 1791 A single positive integer specifying the minimum watermark level 1792 for the hardware fifo of this device. If the device does not 1793 have a hardware fifo this entry is not present. 1794 1795 If the user sets buffer/watermark to a value less than this one, 1796 then the hardware watermark will remain unset. 1797 1798What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max 1799KernelVersion: 4.2 1800Contact: linux-iio@vger.kernel.org 1801Description: 1802 A single positive integer specifying the maximum watermark level 1803 for the hardware fifo of this device. If the device does not 1804 have a hardware fifo this entry is not present. 1805 1806 If the user sets buffer/watermark to a value greater than this 1807 one, then the hardware watermark will be capped at this value. 1808 1809What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available 1810KernelVersion: 4.2 1811Contact: linux-iio@vger.kernel.org 1812Description: 1813 A list of positive integers specifying the available watermark 1814 levels for the hardware fifo. This entry is optional and if it 1815 is not present it means that all the values between 1816 hwfifo_watermark_min and hwfifo_watermark_max are supported. 1817 1818 If the user sets buffer/watermark to a value greater than 1819 hwfifo_watermak_min but not equal to any of the values in this 1820 list, the driver will chose an appropriate value for the 1821 hardware fifo watermark level. 1822 1823What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity 1824What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity 1825What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity 1826What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity 1827KernelVersion: 4.1 1828Contact: linux-iio@vger.kernel.org 1829Description: 1830 The emissivity ratio of the surface in the field of view of the 1831 contactless temperature sensor. Emissivity varies from 0 to 1, 1832 with 1 being the emissivity of a black body. 1833 1834What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio 1835What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio 1836What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio 1837KernelVersion: 4.2 1838Contact: linux-iio@vger.kernel.org 1839Description: 1840 Hardware applied number of measurements for acquiring one 1841 data point. The HW will do <type>[_name]_oversampling_ratio 1842 measurements and return the average value as output data. Each 1843 value resulted from <type>[_name]_oversampling_ratio measurements 1844 is considered as one sample for <type>[_name]_sampling_frequency. 1845 1846What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw 1847What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw 1848What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw 1849What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw 1850What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw 1851What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw 1852What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw 1853What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw 1854What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw 1855What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_o2_raw 1856What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw 1857What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw 1858KernelVersion: 4.3 1859Contact: linux-iio@vger.kernel.org 1860Description: 1861 Raw (unscaled no offset etc.) reading of a substance. Units 1862 after application of scale and offset are percents. 1863 1864What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw 1865What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw 1866What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw 1867What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw 1868KernelVersion: 4.3 1869Contact: linux-iio@vger.kernel.org 1870Description: 1871 Raw (unscaled no offset etc.) resistance reading. 1872 Units after application of scale and offset are ohms. 1873 1874What: /sys/bus/iio/devices/iio:deviceX/heater_enable 1875KernelVersion: 4.1.0 1876Contact: linux-iio@vger.kernel.org 1877Description: 1878 '1' (enable) or '0' (disable) specifying the enable 1879 of heater function. Same reading values apply. 1880 1881 This ABI is especially applicable for humidity sensors 1882 to heatup the device and get rid of any condensation 1883 in some humidity environment 1884 1885What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw 1886KernelVersion: 4.5 1887Contact: linux-iio@vger.kernel.org 1888Description: 1889 Raw (unscaled no offset etc.) pH reading of a substance as a negative 1890 base-10 logarithm of hydrodium ions in a litre of water. 1891 1892What: /sys/bus/iio/devices/iio:deviceX/mount_matrix 1893What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix 1894What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix 1895What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix 1896What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix 1897KernelVersion: 4.6 1898Contact: linux-iio@vger.kernel.org 1899Description: 1900 Mounting matrix for IIO sensors. This is a rotation matrix which 1901 informs userspace about sensor chip's placement relative to the 1902 main hardware it is mounted on. 1903 1904 Main hardware placement is defined according to the local 1905 reference frame related to the physical quantity the sensor 1906 measures. 1907 1908 Given that the rotation matrix is defined in a board specific 1909 way (platform data and / or device-tree), the main hardware 1910 reference frame definition is left to the implementor's choice 1911 (see below for a magnetometer example). 1912 1913 Applications should apply this rotation matrix to samples so 1914 that when main hardware reference frame is aligned onto local 1915 reference frame, then sensor chip reference frame is also 1916 perfectly aligned with it. 1917 1918 Matrix is a 3x3 unitary matrix and typically looks like 1919 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix 1920 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware 1921 are perfectly aligned with each other. 1922 1923 For example, a mounting matrix for a magnetometer sensor informs 1924 userspace about sensor chip's ORIENTATION relative to the main 1925 hardware. 1926 1927 More specifically, main hardware orientation is defined with 1928 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where : 1929 1930 * Y is in the ground plane and positive towards magnetic North ; 1931 * X is in the ground plane, perpendicular to the North axis and 1932 positive towards the East ; 1933 * Z is perpendicular to the ground plane and positive upwards. 1934 1935 An implementor might consider that for a hand-held device, a 1936 'natural' orientation would be 'front facing camera at the top'. 1937 The main hardware reference frame could then be described as : 1938 1939 * Y is in the plane of the screen and is positive towards the 1940 top of the screen ; 1941 * X is in the plane of the screen, perpendicular to Y axis, and 1942 positive towards the right hand side of the screen ; 1943 * Z is perpendicular to the screen plane and positive out of the 1944 screen. 1945 1946 Another example for a quadrotor UAV might be : 1947 1948 * Y is in the plane of the propellers and positive towards the 1949 front-view camera; 1950 * X is in the plane of the propellers, perpendicular to Y axis, 1951 and positive towards the starboard side of the UAV ; 1952 * Z is perpendicular to propellers plane and positive upwards. 1953 1954What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw 1955KernelVersion: 4.8 1956Contact: linux-iio@vger.kernel.org 1957Description: 1958 Raw (unscaled no offset etc.) electric conductivity reading. 1959 Units after application of scale and offset are siemens per 1960 meter. 1961 1962What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw 1963KernelVersion: 4.10 1964Contact: linux-iio@vger.kernel.org 1965Description: 1966 This interface is deprecated; please use the Counter subsystem. 1967 1968 Raw counter device counts from channel Y. For quadrature 1969 counters, multiplication by an available [Y]_scale results in 1970 the counts of a single quadrature signal phase from channel Y. 1971 1972What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw 1973KernelVersion: 4.10 1974Contact: linux-iio@vger.kernel.org 1975Description: 1976 This interface is deprecated; please use the Counter subsystem. 1977 1978 Raw counter device index value from channel Y. This attribute 1979 provides an absolute positional reference (e.g. a pulse once per 1980 revolution) which may be used to home positional systems as 1981 required. 1982 1983What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available 1984KernelVersion: 4.12 1985Contact: linux-iio@vger.kernel.org 1986Description: 1987 This interface is deprecated; please use the Counter subsystem. 1988 1989 A list of possible counting directions which are: 1990 1991 - "up" : counter device is increasing. 1992 - "down": counter device is decreasing. 1993 1994What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction 1995KernelVersion: 4.12 1996Contact: linux-iio@vger.kernel.org 1997Description: 1998 This interface is deprecated; please use the Counter subsystem. 1999 2000 Raw counter device counters direction for channel Y. 2001 2002What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_label 2003What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_label 2004KernelVersion: 5.8 2005Contact: linux-iio@vger.kernel.org 2006Description: 2007 Optional symbolic label to a device channel. 2008 If a label is defined for this channel add that to the channel 2009 specific attributes. This is useful for userspace to be able to 2010 better identify an individual channel. 2011 2012What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw 2013KernelVersion: 4.18 2014Contact: linux-iio@vger.kernel.org 2015Description: 2016 Raw (unscaled) phase difference reading from channel Y. 2017 Units after application of scale and offset are radians. 2018 2019What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input 2020What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input 2021What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input 2022What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input 2023What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input 2024What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input 2025What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input 2026What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_input 2027KernelVersion: 4.22 2028Contact: linux-iio@vger.kernel.org 2029Description: 2030 Mass concentration reading of particulate matter in ug / m3. 2031 pmX consists of particles with aerodynamic diameter less or 2032 equal to X micrometers. 2033 2034What: /sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available 2035Date: November 2019 2036KernelVersion: 5.4 2037Contact: linux-iio@vger.kernel.org 2038Description: 2039 List of valid periods (in seconds) for which the light intensity 2040 must be above the threshold level before interrupt is asserted. 2041 2042What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency 2043KernelVersion: 5.5 2044Contact: linux-iio@vger.kernel.org 2045Description: 2046 Center frequency in Hz for a notch filter. Used i.e. for line 2047 noise suppression. 2048 2049What: /sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_type 2050KernelVersion: 5.5 2051Contact: linux-iio@vger.kernel.org 2052Description: 2053 One of the following thermocouple types: B, E, J, K, N, R, S, T. 2054 2055What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient 2056What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibambient 2057KernelVersion: 5.10 2058Contact: linux-iio@vger.kernel.org 2059Description: 2060 Calibrated ambient temperature for object temperature 2061 calculation in milli degrees Celsius. 2062 2063What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw 2064What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw 2065What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_raw 2066KernelVersion: 5.10 2067Contact: linux-iio@vger.kernel.org 2068Description: 2069 Unscaled light intensity according to CIE 1931/DIN 5033 color space. 2070 Units after application of scale are nano nanowatts per square meter. 2071 2072What: /sys/bus/iio/devices/iio:deviceX/in_anglY_label 2073KernelVersion: 5.12 2074Contact: linux-iio@vger.kernel.org 2075Description: 2076 Optional symbolic label for channel Y. 2077 For Intel hid hinge sensor, the label values are: 2078 hinge, keyboard, screen. It means the three channels 2079 each correspond respectively to hinge angle, keyboard angle, 2080 and screen angle. 2081 2082What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hysteresis_relative 2083What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hysteresis_relative 2084KernelVersion: 5.12 2085Contact: linux-iio@vger.kernel.org 2086Description: 2087 Specify the percent for light sensor relative to the channel 2088 absolute value that a data field should change before an event 2089 is generated. Units are a percentage of the prior reading. 2090 2091What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable 2092Date: June 2020 2093KernelVersion: 5.8 2094Contact: linux-iio@vger.kernel.org 2095Description: 2096 Some sensors have the ability to apply auto calibration at 2097 runtime. For example, it may be necessary to compensate for 2098 contaminant build-up in a measurement chamber or optical 2099 element deterioration that would otherwise lead to sensor drift. 2100 2101 Writing 1 or 0 to this attribute will respectively activate or 2102 deactivate this auto calibration function. 2103 2104 Upon reading, the current status is returned. 2105 2106What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value 2107Date: June 2020 2108KernelVersion: 5.8 2109Contact: linux-iio@vger.kernel.org 2110Description: 2111 Some sensors have the ability to apply a manual calibration using 2112 a known measurement value, perhaps obtained from an external 2113 reference device. 2114 2115 Writing a value to this function will force such a calibration 2116 change. For the scd30 the value should be from the range 2117 [400 1 2000]. 2118 2119 Note for the scd30 that a valid value may only be obtained once 2120 it is has been written. Until then any read back of this value 2121 should be ignored. As for the scd4x an error will be returned 2122 immediately if the manual calibration has failed. 2123 2124What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value_available 2125KernelVersion: 5.15 2126Contact: linux-iio@vger.kernel.org 2127Description: 2128 Available range for the forced calibration value, expressed as: 2129 2130 - a range specified as "[min step max]" 2131 2132What: /sys/bus/iio/devices/iio:deviceX/in_voltageX_sampling_frequency 2133What: /sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency 2134What: /sys/bus/iio/devices/iio:deviceX/in_currentZ_sampling_frequency 2135KernelVersion: 5.20 2136Contact: linux-iio@vger.kernel.org 2137Description: 2138 Some devices have separate controls of sampling frequency for 2139 individual channels. If multiple channels are enabled in a scan, 2140 then the sampling_frequency of the scan may be computed from the 2141 per channel sampling frequencies. 2142 2143What: /sys/.../events/in_accel_gesture_singletap_en 2144What: /sys/.../events/in_accel_gesture_doubletap_en 2145KernelVersion: 6.1 2146Contact: linux-iio@vger.kernel.org 2147Description: 2148 Device generates an event on a single or double tap. 2149 2150What: /sys/.../events/in_accel_gesture_singletap_value 2151What: /sys/.../events/in_accel_gesture_doubletap_value 2152KernelVersion: 6.1 2153Contact: linux-iio@vger.kernel.org 2154Description: 2155 Specifies the threshold value that the device is comparing 2156 against to generate the tap gesture event. The lower 2157 threshold value increases the sensitivity of tap detection. 2158 Units and the exact meaning of value are device-specific. 2159 2160What: /sys/.../events/in_accel_gesture_tap_value_available 2161KernelVersion: 6.1 2162Contact: linux-iio@vger.kernel.org 2163Description: 2164 Lists all available threshold values which can be used to 2165 modify the sensitivity of the tap detection. 2166 2167What: /sys/.../events/in_accel_gesture_singletap_reset_timeout 2168What: /sys/.../events/in_accel_gesture_doubletap_reset_timeout 2169KernelVersion: 6.1 2170Contact: linux-iio@vger.kernel.org 2171Description: 2172 Specifies the timeout value in seconds for the tap detector 2173 to not to look for another tap event after the event as 2174 occurred. Basically the minimum quiet time between the two 2175 single-tap's or two double-tap's. 2176 2177What: /sys/.../events/in_accel_gesture_tap_reset_timeout_available 2178KernelVersion: 6.1 2179Contact: linux-iio@vger.kernel.org 2180Description: 2181 Lists all available tap reset timeout values. Units in seconds. 2182 2183What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay 2184KernelVersion: 6.1 2185Contact: linux-iio@vger.kernel.org 2186Description: 2187 Specifies the minimum quiet time in seconds between the two 2188 taps of a double tap. 2189 2190What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available 2191KernelVersion: 6.1 2192Contact: linux-iio@vger.kernel.org 2193Description: 2194 Lists all available delay values between two taps in the double 2195 tap. Units in seconds. 2196 2197What: /sys/.../events/in_accel_gesture_tap_maxtomin_time 2198KernelVersion: 6.1 2199Contact: linux-iio@vger.kernel.org 2200Description: 2201 Specifies the maximum time difference allowed between upper 2202 and lower peak of tap to consider it as the valid tap event. 2203 Units in seconds. 2204 2205What: /sys/.../events/in_accel_gesture_tap_maxtomin_time_available 2206KernelVersion: 6.1 2207Contact: linux-iio@vger.kernel.org 2208Description: 2209 Lists all available time values between upper peak to lower 2210 peak. Units in seconds. 2211 2212What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw 2213What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw 2214What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw 2215KernelVersion: 6.1 2216Contact: linux-iio@vger.kernel.org 2217Description: 2218 Raw (unscaled) euler angles readings. Units after 2219 application of scale are deg. 2220 2221What: /sys/bus/iio/devices/iio:deviceX/serialnumber 2222KernelVersion: 6.1 2223Contact: linux-iio@vger.kernel.org 2224Description: 2225 An example format is 16-bytes, 2-digits-per-byte, HEX-string 2226 representing the sensor unique ID number. 2227 2228What: /sys/.../events/in_proximity_thresh_either_runningperiod 2229KernelVersion: 6.6 2230Contact: linux-iio@vger.kernel.org 2231Description: 2232 A running period of time (in seconds) for which 2233 in_proximity_thresh_either_runningcount amount of conditions 2234 must occur before an event is generated. If direction is not 2235 specified then this period applies to both directions. 2236 2237What: /sys/.../events/in_proximity_thresh_either_runningcount 2238KernelVersion: 6.6 2239Contact: linux-iio@vger.kernel.org 2240Description: 2241 Number of conditions that must occur, during a running 2242 period, before an event is generated. 2243 2244What: /sys/bus/iio/devices/iio:deviceX/in_colortemp_raw 2245KernelVersion: 6.7 2246Contact: linux-iio@vger.kernel.org 2247Description: 2248 Represents light color temperature, which measures light color 2249 temperature in Kelvin. 2250 2251What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_x_raw 2252What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_y_raw 2253KernelVersion: 6.7 2254Contact: linux-iio@vger.kernel.org 2255Description: 2256 The x and y light color coordinate on the CIE 1931 chromaticity 2257 diagram. 2258 2259What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_either_label 2260What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_rising_label 2261What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_falling_label 2262What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_rising_label 2263What: /sys/bus/iio/devices/iio:deviceX/events/in_anglvelY_mag_rising_label 2264What: /sys/bus/iio/devices/iio:deviceX/events/in_anglY_thresh_rising_label 2265What: /sys/bus/iio/devices/iio:deviceX/events/in_phaseY_mag_rising_label 2266KernelVersion: 6.7 2267Contact: linux-iio@vger.kernel.org 2268Description: 2269 Optional symbolic label to a device channel event. 2270 If a label is defined for this event add that to the event 2271 specific attributes. This is useful for userspace to be able to 2272 better identify an individual event. 2273 2274What: /sys/.../events/in_accel_gesture_tap_wait_timeout 2275KernelVersion: 6.7 2276Contact: linux-iio@vger.kernel.org 2277Description: 2278 Enable tap gesture confirmation with timeout. 2279 2280What: /sys/.../events/in_accel_gesture_tap_wait_dur 2281KernelVersion: 6.7 2282Contact: linux-iio@vger.kernel.org 2283Description: 2284 Timeout value in seconds for tap gesture confirmation. 2285 2286What: /sys/.../events/in_accel_gesture_tap_wait_dur_available 2287KernelVersion: 6.7 2288Contact: linux-iio@vger.kernel.org 2289Description: 2290 List of available timeout value for tap gesture confirmation. 2291