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Linux/Documentation/ABI/testing/sysfs-bus-iio

  1 What:           /sys/bus/iio/devices/iio:deviceX
  2 KernelVersion:  2.6.35
  3 Contact:        linux-iio@vger.kernel.org
  4 Description:
  5                 Hardware chip or device accessed by one communication port.
  6                 Corresponds to a grouping of sensor channels. X is the IIO
  7                 index of the device.
  8 
  9 What:           /sys/bus/iio/devices/triggerX
 10 KernelVersion:  2.6.35
 11 Contact:        linux-iio@vger.kernel.org
 12 Description:
 13                 An event driven driver of data capture to an in kernel buffer.
 14                 May be provided by a device driver that also has an IIO device
 15                 based on hardware generated events (e.g. data ready) or
 16                 provided by a separate driver for other hardware (e.g.
 17                 periodic timer, GPIO or high resolution timer).
 18                 Contains trigger type specific elements. These do not
 19                 generalize well and hence are not documented in this file.
 20                 X is the IIO index of the trigger.
 21 
 22 What:           /sys/bus/iio/devices/iio:deviceX/buffer
 23 KernelVersion:  2.6.35
 24 Contact:        linux-iio@vger.kernel.org
 25 Description:
 26                 Directory of attributes relating to the buffer for the device.
 27 
 28 What:           /sys/bus/iio/devices/iio:deviceX/name
 29 KernelVersion:  2.6.35
 30 Contact:        linux-iio@vger.kernel.org
 31 Description:
 32                 Description of the physical chip / device for device X.
 33                 Typically a part number.
 34 
 35 What:           /sys/bus/iio/devices/iio:deviceX/timestamp_clock
 36 KernelVersion:  4.5
 37 Contact:        linux-iio@vger.kernel.org
 38 Description:
 39                 String identifying current posix clock used to timestamp
 40                 buffered samples and events for device X.
 41 
 42 What:           /sys/bus/iio/devices/iio:deviceX/sampling_frequency
 43 What:           /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
 44 What:           /sys/bus/iio/devices/triggerX/sampling_frequency
 45 KernelVersion:  2.6.35
 46 Contact:        linux-iio@vger.kernel.org
 47 Description:
 48                 Some devices have internal clocks.  This parameter sets the
 49                 resulting sampling frequency.  In many devices this
 50                 parameter has an effect on input filters etc. rather than
 51                 simply controlling when the input is sampled.  As this
 52                 effects data ready triggers, hardware buffers and the sysfs
 53                 direct access interfaces, it may be found in any of the
 54                 relevant directories.  If it effects all of the above
 55                 then it is to be found in the base device directory.
 56 
 57 What:           /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
 58 What:           /sys/.../iio:deviceX/buffer/sampling_frequency_available
 59 What:           /sys/bus/iio/devices/triggerX/sampling_frequency_available
 60 KernelVersion:  2.6.35
 61 Contact:        linux-iio@vger.kernel.org
 62 Description:
 63                 When the internal sampling clock can only take a small
 64                 discrete set of values, this file lists those available.
 65 
 66 What:           /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
 67 KernelVersion:  2.6.38
 68 Contact:        linux-iio@vger.kernel.org
 69 Description:
 70                 Hardware dependent ADC oversampling. Controls the sampling ratio
 71                 of the digital filter if available.
 72 
 73 What:           /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
 74 KernelVersion:  2.6.38
 75 Contact:        linux-iio@vger.kernel.org
 76 Description:
 77                 Hardware dependent values supported by the oversampling filter.
 78 
 79 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
 80 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
 81 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
 82 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
 83 KernelVersion:  2.6.35
 84 Contact:        linux-iio@vger.kernel.org
 85 Description:
 86                 Raw (unscaled no bias removal etc.) voltage measurement from
 87                 channel Y. In special cases where the channel does not
 88                 correspond to externally available input one of the named
 89                 versions may be used. The number must always be specified and
 90                 unique to allow association with event codes. Units after
 91                 application of scale and offset are millivolts.
 92 
 93                 Channels with 'i' and 'q' modifiers always exist in pairs and both
 94                 channels refer to the same signal. The 'i' channel contains the in-phase
 95                 component of the signal while the 'q' channel contains the quadrature
 96                 component.
 97 
 98 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
 99 KernelVersion:  2.6.35
100 Contact:        linux-iio@vger.kernel.org
101 Description:
102                 Raw (unscaled) differential voltage measurement equivalent to
103                 channel Y - channel Z where these channel numbers apply to the
104                 physically equivalent inputs when non differential readings are
105                 separately available. In differential only parts, then all that
106                 is required is a consistent labeling.  Units after application
107                 of scale and offset are millivolts.
108 
109 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
110 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
111 KernelVersion:  3.17
112 Contact:        linux-iio@vger.kernel.org
113 Description:
114                 Raw (unscaled no bias removal etc.) current measurement from
115                 channel Y. In special cases where the channel does not
116                 correspond to externally available input one of the named
117                 versions may be used. The number must always be specified and
118                 unique to allow association with event codes. Units after
119                 application of scale and offset are milliamps.
120 
121 What:           /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
122 KernelVersion:  3.2
123 Contact:        linux-iio@vger.kernel.org
124 Description:
125                 Raw capacitance measurement from channel Y. Units after
126                 application of scale and offset are nanofarads.
127 
128 What:           /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
129 KernelVersion:  3.2
130 Contact:        linux-iio@vger.kernel.org
131 Description:
132                 Raw differential capacitance measurement equivalent to
133                 channel Y - channel Z where these channel numbers apply to the
134                 physically equivalent inputs when non differential readings are
135                 separately available. In differential only parts, then all that
136                 is required is a consistent labeling.  Units after application
137                 of scale and offset are nanofarads.
138 
139 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_raw
140 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
141 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
142 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
143 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
144 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
145 KernelVersion:  2.6.35
146 Contact:        linux-iio@vger.kernel.org
147 Description:
148                 Raw (unscaled no bias removal etc.) temperature measurement.
149                 If an axis is specified it generally means that the temperature
150                 sensor is associated with one part of a compound device (e.g.
151                 a gyroscope axis). The ambient and object modifiers distinguish
152                 between ambient (reference) and distant temperature for contact-
153                 less measurements. Units after application of scale and offset
154                 are milli degrees Celsius.
155 
156 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_input
157 KernelVersion:  2.6.38
158 Contact:        linux-iio@vger.kernel.org
159 Description:
160                 Scaled temperature measurement in milli degrees Celsius.
161 
162 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
163 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
164 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
165 KernelVersion:  2.6.35
166 Contact:        linux-iio@vger.kernel.org
167 Description:
168                 Acceleration in direction x, y or z (may be arbitrarily assigned
169                 but should match other such assignments on device).
170                 Has all of the equivalent parameters as per voltageY. Units
171                 after application of scale and offset are m/s^2.
172 
173 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
174 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
175 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
176 KernelVersion:  2.6.35
177 Contact:        linux-iio@vger.kernel.org
178 Description:
179                 Angular velocity about axis x, y or z (may be arbitrarily
180                 assigned). Has all the equivalent parameters as per voltageY.
181                 Units after application of scale and offset are radians per
182                 second.
183 
184 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
185 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
186 What:           /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
187 KernelVersion:  2.6.35
188 Contact:        linux-iio@vger.kernel.org
189 Description:
190                 Inclination raw reading about axis x, y or z (may be
191                 arbitrarily assigned). Data converted by application of offset
192                 and scale to degrees.
193 
194 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
195 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
196 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
197 KernelVersion:  2.6.35
198 Contact:        linux-iio@vger.kernel.org
199 Description:
200                 Magnetic field along axis x, y or z (may be arbitrarily
201                 assigned).  Data converted by application of offset
202                 then scale to Gauss.
203 
204 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
205 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
206 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
207 KernelVersion:  2.6.36
208 Contact:        linux-iio@vger.kernel.org
209 Description:
210                 Highest value since some reset condition.  These
211                 attributes allow access to this and are otherwise
212                 the direct equivalent of the <type>Y[_name]_raw attributes.
213 
214 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
215 KernelVersion:  2.6.36
216 Contact:        linux-iio@vger.kernel.org
217 Description:
218                 A computed peak value based on the sum squared magnitude of
219                 the underlying value in the specified directions.
220 
221 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
222 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
223 KernelVersion:  3.8
224 Contact:        linux-iio@vger.kernel.org
225 Description:
226                 Raw pressure measurement from channel Y. Units after
227                 application of scale and offset are kilopascal.
228 
229 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
230 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_input
231 KernelVersion:  3.8
232 Contact:        linux-iio@vger.kernel.org
233 Description:
234                 Scaled pressure measurement from channel Y, in kilopascal.
235 
236 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
237 KernelVersion:  3.14
238 Contact:        linux-iio@vger.kernel.org
239 Description:
240                 Raw humidity measurement of air. Units after application of
241                 scale and offset are milli percent.
242 
243 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
244 KernelVersion:  3.14
245 Contact:        linux-iio@vger.kernel.org
246 Description:
247                 Scaled humidity measurement in milli percent.
248 
249 What:           /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
250 KernelVersion:  3.5
251 Contact:        linux-iio@vger.kernel.org
252 Description:
253                 Averaged raw measurement from channel X. The number of values
254                 used for averaging is device specific. The converting rules for
255                 normal raw values also applies to the averaged raw values.
256 
257 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_offset
258 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
259 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
260 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
261 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
262 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
263 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
264 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
265 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
266 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
267 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
268 What:           /sys/bus/iio/devices/iio:deviceX/in_current_offset
269 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
270 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
271 What:           /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
272 What:           /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
273 What:           /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
274 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_offset
275 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
276 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
277 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
278 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_offset
279 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_offset
280 KernelVersion:  2.6.35
281 Contact:        linux-iio@vger.kernel.org
282 Description:
283                 If known for a device, offset to be added to <type>[Y]_raw prior
284                 to scaling by <type>[Y]_scale in order to obtain value in the
285                 <type> units as specified in <type>[Y]_raw documentation.
286                 Not present if the offset is always 0 or unknown. If Y or
287                 axis <x|y|z> is not present, then the offset applies to all
288                 in channels of <type>.
289                 May be writable if a variable offset can be applied on the
290                 device. Note that this is different to calibbias which
291                 is for devices (or drivers) that apply offsets to compensate
292                 for variation between different instances of the part, typically
293                 adjusted by using some hardware supported calibration procedure.
294                 Calibbias is applied internally, offset is applied in userspace
295                 to the _raw output.
296 
297 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
298 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
299 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
300 What:           /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
301 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
302 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
303 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
304 What:           /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
305 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
306 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
307 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
308 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
309 What:           /sys/bus/iio/devices/iio:deviceX/in_current_scale
310 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
311 What:           /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
312 What:           /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
313 What:           /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
314 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale
315 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
316 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
317 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_scale
318 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_scale
319 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_scale
320 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
321 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
322 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
323 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
324 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
325 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
326 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
327 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
328 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
329 What:           /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
330 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
331 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
332 What:           /sys/bus/iio/devices/iio:deviceX/in_countY_scale
333 KernelVersion:  2.6.35
334 Contact:        linux-iio@vger.kernel.org
335 Description:
336                 If known for a device, scale to be applied to <type>Y[_name]_raw
337                 post addition of <type>[Y][_name]_offset in order to obtain the
338                 measured value in <type> units as specified in
339                 <type>[Y][_name]_raw documentation.  If shared across all in
340                 channels then Y and <x|y|z> are not present and the value is
341                 called <type>[Y][_name]_scale. The peak modifier means this
342                 value is applied to <type>Y[_name]_peak_raw values.
343 
344 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
345 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
346 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
347 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
348 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
349 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
350 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
351 What:           /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
352 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
353 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
354 KernelVersion:  2.6.35
355 Contact:        linux-iio@vger.kernel.org
356 Description:
357                 Hardware applied calibration offset (assumed to fix production
358                 inaccuracies).
359 
360 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
361 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
362 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
363 What            /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
364 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
365 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
366 What            /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
367 What            /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
368 What            /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
369 What            /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
370 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
371 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
372 What            /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
373 what            /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
374 what            /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
375 What:           /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
376 What:           /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
377 What:           /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
378 KernelVersion:  2.6.35
379 Contact:        linux-iio@vger.kernel.org
380 Description:
381                 Hardware applied calibration scale factor (assumed to fix
382                 production inaccuracies).  If shared across all channels,
383                 <type>_calibscale is used.
384 
385 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
386 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
387 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
388 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
389 KernelVersion:  4.0
390 Contact:        linux-iio@vger.kernel.org
391 Description:
392                 Gender of the user (e.g.: male, female) used by some pedometers
393                 to compute the stride length, distance, speed and activity
394                 type.
395 
396 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
397 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
398 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
399 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
400 KernelVersion:  4.0
401 Contact:        linux-iio@vger.kernel.org
402 Description:
403                 Lists all available gender values (e.g.: male, female).
404 
405 What:           /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
406 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
407 What:           /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
408 What:           /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
409 KernelVersion:  3.19
410 Contact:        linux-iio@vger.kernel.org
411 Description:
412                 Height of the user (in meters) used by some pedometers
413                 to compute the stride length, distance, speed and activity
414                 type.
415 
416 What:           /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
417 KernelVersion:  4.0
418 Contact:        linux-iio@vger.kernel.org
419 Description:
420                 Weight of the user (in kg). It is needed by some pedometers
421                 to compute the calories burnt by the user.
422 
423 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
424 What:           /sys/.../iio:deviceX/in_anglvel_scale_available
425 What:           /sys/.../iio:deviceX/in_magn_scale_available
426 What:           /sys/.../iio:deviceX/in_illuminance_scale_available
427 What:           /sys/.../iio:deviceX/in_intensity_scale_available
428 What:           /sys/.../iio:deviceX/in_proximity_scale_available
429 What:           /sys/.../iio:deviceX/in_voltageX_scale_available
430 What:           /sys/.../iio:deviceX/in_voltage-voltage_scale_available
431 What:           /sys/.../iio:deviceX/out_voltageX_scale_available
432 What:           /sys/.../iio:deviceX/out_altvoltageX_scale_available
433 What:           /sys/.../iio:deviceX/in_capacitance_scale_available
434 What:           /sys/.../iio:deviceX/in_pressure_scale_available
435 What:           /sys/.../iio:deviceX/in_pressureY_scale_available
436 KernelVersion:  2.6.35
437 Contact:        linux-iio@vger.kernel.org
438 Description:
439                 If a discrete set of scale values is available, they
440                 are listed in this attribute.
441 
442 What            /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
443 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
444 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
445 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
446 What:           /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
447 KernelVersion:  2.6.35
448 Contact:        linux-iio@vger.kernel.org
449 Description:
450                 Hardware applied gain factor. If shared across all channels,
451                 <type>_hardwaregain is used.
452 
453 What:           /sys/.../in_accel_filter_low_pass_3db_frequency
454 What:           /sys/.../in_magn_filter_low_pass_3db_frequency
455 What:           /sys/.../in_anglvel_filter_low_pass_3db_frequency
456 KernelVersion:  3.2
457 Contact:        linux-iio@vger.kernel.org
458 Description:
459                 If a known or controllable low pass filter is applied
460                 to the underlying data channel, then this parameter
461                 gives the 3dB frequency of the filter in Hz.
462 
463 What:           /sys/.../in_accel_filter_high_pass_3db_frequency
464 What:           /sys/.../in_anglvel_filter_high_pass_3db_frequency
465 What:           /sys/.../in_magn_filter_high_pass_3db_frequency
466 KernelVersion:  4.2
467 Contact:        linux-iio@vger.kernel.org
468 Description:
469                 If a known or controllable high pass filter is applied
470                 to the underlying data channel, then this parameter
471                 gives the 3dB frequency of the filter in Hz.
472 
473 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
474 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
475 KernelVersion:  2.6.37
476 Contact:        linux-iio@vger.kernel.org
477 Description:
478                 Raw (unscaled, no bias etc.) output voltage for
479                 channel Y.  The number must always be specified and
480                 unique if the output corresponds to a single channel.
481                 While DAC like devices typically use out_voltage,
482                 a continuous frequency generating device, such as
483                 a DDS or PLL should use out_altvoltage.
484 
485 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
486 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
487 KernelVersion:  2.6.37
488 Contact:        linux-iio@vger.kernel.org
489 Description:
490                 Raw (unscaled, no bias etc.) output voltage for an aggregate of
491                 channel Y, channel Z, etc.  This interface is available in cases
492                 where a single output sets the value for multiple channels
493                 simultaneously.
494 
495 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
496 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
497 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
498 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
499 KernelVersion:  2.6.38
500 Contact:        linux-iio@vger.kernel.org
501 Description:
502                 Specifies the output powerdown mode.
503                 DAC output stage is disconnected from the amplifier and
504                 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
505                 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
506                 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
507                 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
508                 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
509                 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
510                 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
511                 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
512                 three_state: left floating.
513                 For a list of available output power down options read
514                 outX_powerdown_mode_available. If Y is not present the
515                 mode is shared across all outputs.
516 
517 What:           /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
518 What:           /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
519 What:           /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
520 What:           /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
521 KernelVersion:  2.6.38
522 Contact:        linux-iio@vger.kernel.org
523 Description:
524                 Lists all available output power down modes.
525                 If Y is not present the mode is shared across all outputs.
526 
527 What:           /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
528 What:           /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
529 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
530 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
531 KernelVersion:  2.6.38
532 Contact:        linux-iio@vger.kernel.org
533 Description:
534                 Writing 1 causes output Y to enter the power down mode specified
535                 by the corresponding outY_powerdown_mode. DAC output stage is
536                 disconnected from the amplifier. Clearing returns to normal
537                 operation. Y may be suppressed if all outputs are controlled
538                 together.
539 
540 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
541 KernelVersion:  3.4.0
542 Contact:        linux-iio@vger.kernel.org
543 Description:
544                 Output frequency for channel Y in Hz. The number must always be
545                 specified and unique if the output corresponds to a single
546                 channel.
547 
548 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
549 KernelVersion:  3.4.0
550 Contact:        linux-iio@vger.kernel.org
551 Description:
552                 Phase in radians of one frequency/clock output Y
553                 (out_altvoltageY) relative to another frequency/clock output
554                 (out_altvoltageZ) of the device X. The number must always be
555                 specified and unique if the output corresponds to a single
556                 channel.
557 
558 What:           /sys/bus/iio/devices/iio:deviceX/events
559 KernelVersion:  2.6.35
560 Contact:        linux-iio@vger.kernel.org
561 Description:
562                 Configuration of which hardware generated events are passed up
563                 to user-space.
564 
565 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
566 What:           /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
567 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
568 What:           /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
569 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
570 What:           /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
571 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
572 What:           /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
573 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
574 What:           /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
575 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
576 What:           /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
577 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
578 What:           /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
579 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
580 What:           /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
581 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
582 What:           /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
583 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
584 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
585 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
586 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
587 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
588 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
589 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
590 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
591 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
592 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
593 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
594 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
595 What:           /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
596 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
597 What:           /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
598 KernelVersion:  2.6.37
599 Contact:        linux-iio@vger.kernel.org
600 Description:
601                 Event generated when channel passes a threshold in the specified
602                 (_rising|_falling) direction. If the direction is not specified,
603                 then either the device will report an event which ever direction
604                 a single threshold value is passed in (e.g.
605                 <type>[Y][_name]_<raw|input>_thresh_value) or
606                 <type>[Y][_name]_<raw|input>_thresh_rising_value and
607                 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
608                 different values, but the device can only enable both thresholds
609                 or neither.
610                 Note the driver will assume the last p events requested are
611                 to be enabled where p is how many it supports (which may vary
612                 depending on the exact set requested. So if you want to be
613                 sure you have set what you think you have, check the contents of
614                 these attributes after everything is configured. Drivers may
615                 have to buffer any parameters so that they are consistent when
616                 a given event type is enabled at a future point (and not those for
617                 whatever event was previously enabled).
618 
619 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
620 What:           /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
621 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
622 What:           /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
623 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
624 What:           /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
625 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
626 What:           /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
627 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
628 What:           /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
629 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
630 What:           /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
631 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
632 What:           /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
633 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
634 What:           /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
635 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
636 What:           /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
637 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
638 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
639 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
640 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
641 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
642 What:           /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
643 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
644 What:           /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
645 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
646 What:           /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
647 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
648 What:           /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
649 What:           /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
650 What:           /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
651 KernelVersion:  2.6.37
652 Contact:        linux-iio@vger.kernel.org
653 Description:
654                 Event generated when channel passes a threshold on the rate of
655                 change (1st differential) in the specified (_rising|_falling)
656                 direction. If the direction is not specified, then either the
657                 device will report an event which ever direction a single
658                 threshold value is passed in (e.g.
659                 <type>[Y][_name]_<raw|input>_roc_value) or
660                 <type>[Y][_name]_<raw|input>_roc_rising_value and
661                 <type>[Y][_name]_<raw|input>_roc_falling_value may take
662                 different values, but the device can only enable both rate of
663                 change thresholds or neither.
664                 Note the driver will assume the last p events requested are
665                 to be enabled where p is however many it supports (which may
666                 vary depending on the exact set requested. So if you want to be
667                 sure you have set what you think you have, check the contents of
668                 these attributes after everything is configured. Drivers may
669                 have to buffer any parameters so that they are consistent when
670                 a given event type is enabled a future point (and not those for
671                 whatever event was previously enabled).
672 
673 What:           /sys/.../events/in_accel_thresh_rising_value
674 What:           /sys/.../events/in_accel_thresh_falling_value
675 What:           /sys/.../events/in_accel_x_raw_thresh_rising_value
676 What:           /sys/.../events/in_accel_x_raw_thresh_falling_value
677 What:           /sys/.../events/in_accel_y_raw_thresh_rising_value
678 What:           /sys/.../events/in_accel_y_raw_thresh_falling_value
679 What:           /sys/.../events/in_accel_z_raw_thresh_rising_value
680 What:           /sys/.../events/in_accel_z_raw_thresh_falling_value
681 What:           /sys/.../events/in_anglvel_x_raw_thresh_rising_value
682 What:           /sys/.../events/in_anglvel_x_raw_thresh_falling_value
683 What:           /sys/.../events/in_anglvel_y_raw_thresh_rising_value
684 What:           /sys/.../events/in_anglvel_y_raw_thresh_falling_value
685 What:           /sys/.../events/in_anglvel_z_raw_thresh_rising_value
686 What:           /sys/.../events/in_anglvel_z_raw_thresh_falling_value
687 What:           /sys/.../events/in_magn_x_raw_thresh_rising_value
688 What:           /sys/.../events/in_magn_x_raw_thresh_falling_value
689 What:           /sys/.../events/in_magn_y_raw_thresh_rising_value
690 What:           /sys/.../events/in_magn_y_raw_thresh_falling_value
691 What:           /sys/.../events/in_magn_z_raw_thresh_rising_value
692 What:           /sys/.../events/in_magn_z_raw_thresh_falling_value
693 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
694 What:           /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
695 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
696 What:           /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
697 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
698 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
699 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
700 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
701 What:           /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
702 What:           /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
703 What:           /sys/.../events/in_voltageY_raw_thresh_rising_value
704 What:           /sys/.../events/in_voltageY_raw_thresh_falling_value
705 What:           /sys/.../events/in_tempY_raw_thresh_rising_value
706 What:           /sys/.../events/in_tempY_raw_thresh_falling_value
707 What:           /sys/.../events/in_illuminance0_thresh_falling_value
708 what:           /sys/.../events/in_illuminance0_thresh_rising_value
709 what:           /sys/.../events/in_proximity0_thresh_falling_value
710 what:           /sys/.../events/in_proximity0_thresh_rising_value
711 KernelVersion:  2.6.37
712 Contact:        linux-iio@vger.kernel.org
713 Description:
714                 Specifies the value of threshold that the device is comparing
715                 against for the events enabled by
716                 <type>Y[_name]_thresh[_rising|falling]_en.
717                 If separate attributes exist for the two directions, but
718                 direction is not specified for this attribute, then a single
719                 threshold value applies to both directions.
720                 The raw or input element of the name indicates whether the
721                 value is in raw device units or in processed units (as _raw
722                 and _input do on sysfs direct channel read attributes).
723 
724 What:           /sys/.../events/in_accel_scale
725 What:           /sys/.../events/in_accel_peak_scale
726 What:           /sys/.../events/in_anglvel_scale
727 What:           /sys/.../events/in_magn_scale
728 What:           /sys/.../events/in_rot_from_north_magnetic_scale
729 What:           /sys/.../events/in_rot_from_north_true_scale
730 What:           /sys/.../events/in_voltage_scale
731 What:           /sys/.../events/in_voltage_supply_scale
732 What:           /sys/.../events/in_temp_scale
733 What:           /sys/.../events/in_illuminance_scale
734 What:           /sys/.../events/in_proximity_scale
735 KernelVersion:  3.21
736 Contact:        linux-iio@vger.kernel.org
737 Description:
738                 Specifies the conversion factor from the standard units
739                 to device specific units used to set the event trigger
740                 threshold.
741 
742 What:           /sys/.../events/in_accel_x_thresh_rising_hysteresis
743 What:           /sys/.../events/in_accel_x_thresh_falling_hysteresis
744 What:           /sys/.../events/in_accel_x_thresh_either_hysteresis
745 What:           /sys/.../events/in_accel_y_thresh_rising_hysteresis
746 What:           /sys/.../events/in_accel_y_thresh_falling_hysteresis
747 What:           /sys/.../events/in_accel_y_thresh_either_hysteresis
748 What:           /sys/.../events/in_accel_z_thresh_rising_hysteresis
749 What:           /sys/.../events/in_accel_z_thresh_falling_hysteresis
750 What:           /sys/.../events/in_accel_z_thresh_either_hysteresis
751 What:           /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
752 What:           /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
753 What:           /sys/.../events/in_anglvel_x_thresh_either_hysteresis
754 What:           /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
755 What:           /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
756 What:           /sys/.../events/in_anglvel_y_thresh_either_hysteresis
757 What:           /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
758 What:           /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
759 What:           /sys/.../events/in_anglvel_z_thresh_either_hysteresis
760 What:           /sys/.../events/in_magn_x_thresh_rising_hysteresis
761 What:           /sys/.../events/in_magn_x_thresh_falling_hysteresis
762 What:           /sys/.../events/in_magn_x_thresh_either_hysteresis
763 What:           /sys/.../events/in_magn_y_thresh_rising_hysteresis
764 What:           /sys/.../events/in_magn_y_thresh_falling_hysteresis
765 What:           /sys/.../events/in_magn_y_thresh_either_hysteresis
766 What:           /sys/.../events/in_magn_z_thresh_rising_hysteresis
767 What:           /sys/.../events/in_magn_z_thresh_falling_hysteresis
768 What:           /sys/.../events/in_magn_z_thresh_either_hysteresis
769 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
770 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
771 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
772 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
773 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
774 What:           /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
775 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
776 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
777 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
778 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
779 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
780 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
781 What:           /sys/.../events/in_voltageY_thresh_rising_hysteresis
782 What:           /sys/.../events/in_voltageY_thresh_falling_hysteresis
783 What:           /sys/.../events/in_voltageY_thresh_either_hysteresis
784 What:           /sys/.../events/in_tempY_thresh_rising_hysteresis
785 What:           /sys/.../events/in_tempY_thresh_falling_hysteresis
786 What:           /sys/.../events/in_tempY_thresh_either_hysteresis
787 What:           /sys/.../events/in_illuminance0_thresh_falling_hysteresis
788 what:           /sys/.../events/in_illuminance0_thresh_rising_hysteresis
789 what:           /sys/.../events/in_illuminance0_thresh_either_hysteresis
790 what:           /sys/.../events/in_proximity0_thresh_falling_hysteresis
791 what:           /sys/.../events/in_proximity0_thresh_rising_hysteresis
792 what:           /sys/.../events/in_proximity0_thresh_either_hysteresis
793 KernelVersion:  3.13
794 Contact:        linux-iio@vger.kernel.org
795 Description:
796                 Specifies the hysteresis of threshold that the device is comparing
797                 against for the events enabled by
798                 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
799                 If separate attributes exist for the two directions, but
800                 direction is not specified for this attribute, then a single
801                 hysteresis value applies to both directions.
802                 For falling events the hysteresis is added to the _value attribute for
803                 this event to get the upper threshold for when the event goes back to
804                 normal, for rising events the hysteresis is subtracted from the _value
805                 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
806                 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
807                 will get activated once in_voltage0_raw goes above 1200 and will become
808                 deactived again once the value falls below 1150.
809 
810 What:           /sys/.../events/in_accel_x_raw_roc_rising_value
811 What:           /sys/.../events/in_accel_x_raw_roc_falling_value
812 What:           /sys/.../events/in_accel_y_raw_roc_rising_value
813 What:           /sys/.../events/in_accel_y_raw_roc_falling_value
814 What:           /sys/.../events/in_accel_z_raw_roc_rising_value
815 What:           /sys/.../events/in_accel_z_raw_roc_falling_value
816 What:           /sys/.../events/in_anglvel_x_raw_roc_rising_value
817 What:           /sys/.../events/in_anglvel_x_raw_roc_falling_value
818 What:           /sys/.../events/in_anglvel_y_raw_roc_rising_value
819 What:           /sys/.../events/in_anglvel_y_raw_roc_falling_value
820 What:           /sys/.../events/in_anglvel_z_raw_roc_rising_value
821 What:           /sys/.../events/in_anglvel_z_raw_roc_falling_value
822 What:           /sys/.../events/in_magn_x_raw_roc_rising_value
823 What:           /sys/.../events/in_magn_x_raw_roc_falling_value
824 What:           /sys/.../events/in_magn_y_raw_roc_rising_value
825 What:           /sys/.../events/in_magn_y_raw_roc_falling_value
826 What:           /sys/.../events/in_magn_z_raw_roc_rising_value
827 What:           /sys/.../events/in_magn_z_raw_roc_falling_value
828 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
829 What:           /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
830 What:           /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
831 What:           /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
832 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
833 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
834 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
835 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
836 What:           /sys/.../events/in_voltageY_supply_raw_roc_rising_value
837 What:           /sys/.../events/in_voltageY_supply_raw_roc_falling_value
838 What:           /sys/.../events/in_voltageY_raw_roc_rising_value
839 What:           /sys/.../events/in_voltageY_raw_roc_falling_value
840 What:           /sys/.../events/in_tempY_raw_roc_rising_value
841 What:           /sys/.../events/in_tempY_raw_roc_falling_value
842 KernelVersion:  2.6.37
843 Contact:        linux-iio@vger.kernel.org
844 Description:
845                 Specifies the value of rate of change threshold that the
846                 device is comparing against for the events enabled by
847                 <type>[Y][_name]_roc[_rising|falling]_en.
848                 If separate attributes exist for the two directions,
849                 but direction is not specified for this attribute,
850                 then a single threshold value applies to both directions.
851                 The raw or input element of the name indicates whether the
852                 value is in raw device units or in processed units (as _raw
853                 and _input do on sysfs direct channel read attributes).
854 
855 What:           /sys/.../events/in_accel_x_thresh_rising_period
856 What:           /sys/.../events/in_accel_x_thresh_falling_period
857 What:           /sys/.../events/in_accel_x_roc_rising_period
858 What:           /sys/.../events/in_accel_x_roc_falling_period
859 What:           /sys/.../events/in_accel_y_thresh_rising_period
860 What:           /sys/.../events/in_accel_y_thresh_falling_period
861 What:           /sys/.../events/in_accel_y_roc_rising_period
862 What:           /sys/.../events/in_accel_y_roc_falling_period
863 What:           /sys/.../events/in_accel_z_thresh_rising_period
864 What:           /sys/.../events/in_accel_z_thresh_falling_period
865 What:           /sys/.../events/in_accel_z_roc_rising_period
866 What:           /sys/.../events/in_accel_z_roc_falling_period
867 What:           /sys/.../events/in_anglvel_x_thresh_rising_period
868 What:           /sys/.../events/in_anglvel_x_thresh_falling_period
869 What:           /sys/.../events/in_anglvel_x_roc_rising_period
870 What:           /sys/.../events/in_anglvel_x_roc_falling_period
871 What:           /sys/.../events/in_anglvel_y_thresh_rising_period
872 What:           /sys/.../events/in_anglvel_y_thresh_falling_period
873 What:           /sys/.../events/in_anglvel_y_roc_rising_period
874 What:           /sys/.../events/in_anglvel_y_roc_falling_period
875 What:           /sys/.../events/in_anglvel_z_thresh_rising_period
876 What:           /sys/.../events/in_anglvel_z_thresh_falling_period
877 What:           /sys/.../events/in_anglvel_z_roc_rising_period
878 What:           /sys/.../events/in_anglvel_z_roc_falling_period
879 What:           /sys/.../events/in_magn_x_thresh_rising_period
880 What:           /sys/.../events/in_magn_x_thresh_falling_period
881 What:           /sys/.../events/in_magn_x_roc_rising_period
882 What:           /sys/.../events/in_magn_x_roc_falling_period
883 What:           /sys/.../events/in_magn_y_thresh_rising_period
884 What:           /sys/.../events/in_magn_y_thresh_falling_period
885 What:           /sys/.../events/in_magn_y_roc_rising_period
886 What:           /sys/.../events/in_magn_y_roc_falling_period
887 What:           /sys/.../events/in_magn_z_thresh_rising_period
888 What:           /sys/.../events/in_magn_z_thresh_falling_period
889 What:           /sys/.../events/in_magn_z_roc_rising_period
890 What:           /sys/.../events/in_magn_z_roc_falling_period
891 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
892 What:           /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
893 What:           /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
894 What:           /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
895 What:           /sys/.../events/in_rot_from_north_true_thresh_rising_period
896 What:           /sys/.../events/in_rot_from_north_true_thresh_falling_period
897 What:           /sys/.../events/in_rot_from_north_true_roc_rising_period
898 What:           /sys/.../events/in_rot_from_north_true_roc_falling_period
899 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
900 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
901 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
902 What:           /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
903 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
904 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
905 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
906 What:           /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
907 What:           /sys/.../events/in_voltageY_supply_thresh_rising_period
908 What:           /sys/.../events/in_voltageY_supply_thresh_falling_period
909 What:           /sys/.../events/in_voltageY_supply_roc_rising_period
910 What:           /sys/.../events/in_voltageY_supply_roc_falling_period
911 What:           /sys/.../events/in_voltageY_thresh_rising_period
912 What:           /sys/.../events/in_voltageY_thresh_falling_period
913 What:           /sys/.../events/in_voltageY_roc_rising_period
914 What:           /sys/.../events/in_voltageY_roc_falling_period
915 What:           /sys/.../events/in_tempY_thresh_rising_period
916 What:           /sys/.../events/in_tempY_thresh_falling_period
917 What:           /sys/.../events/in_tempY_roc_rising_period
918 What:           /sys/.../events/in_tempY_roc_falling_period
919 What:           /sys/.../events/in_accel_x&y&z_mag_falling_period
920 What:           /sys/.../events/in_intensity0_thresh_period
921 What:           /sys/.../events/in_proximity0_thresh_period
922 What:           /sys/.../events/in_activity_still_thresh_rising_period
923 What:           /sys/.../events/in_activity_still_thresh_falling_period
924 What:           /sys/.../events/in_activity_walking_thresh_rising_period
925 What:           /sys/.../events/in_activity_walking_thresh_falling_period
926 What:           /sys/.../events/in_activity_jogging_thresh_rising_period
927 What:           /sys/.../events/in_activity_jogging_thresh_falling_period
928 What:           /sys/.../events/in_activity_running_thresh_rising_period
929 What:           /sys/.../events/in_activity_running_thresh_falling_period
930 KernelVersion:  2.6.37
931 Contact:        linux-iio@vger.kernel.org
932 Description:
933                 Period of time (in seconds) for which the condition must be
934                 met before an event is generated. If direction is not
935                 specified then this period applies to both directions.
936 
937 What:           /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
938 What:           /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
939 What:           /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
940 KernelVersion:  4.2
941 Contact:        linux-iio@vger.kernel.org
942 Description:
943                 If a low pass filter can be applied to the event generation
944                 this property gives its 3db frequency in Hz.
945                 A value of zero disables the filter.
946 
947 What:           /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
948 What:           /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
949 What:           /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
950 KernelVersion:  4.2
951 Contact:        linux-iio@vger.kernel.org
952 Description:
953                 If a high pass filter can be applied to the event generation
954                 this property gives its 3db frequency in Hz.
955                 A value of zero disables the filter.
956 
957 What:           /sys/.../events/in_activity_still_thresh_rising_en
958 What:           /sys/.../events/in_activity_still_thresh_falling_en
959 What:           /sys/.../events/in_activity_walking_thresh_rising_en
960 What:           /sys/.../events/in_activity_walking_thresh_falling_en
961 What:           /sys/.../events/in_activity_jogging_thresh_rising_en
962 What:           /sys/.../events/in_activity_jogging_thresh_falling_en
963 What:           /sys/.../events/in_activity_running_thresh_rising_en
964 What:           /sys/.../events/in_activity_running_thresh_falling_en
965 KernelVersion:  3.19
966 Contact:        linux-iio@vger.kernel.org
967 Description:
968                 Enables or disables activitity events. Depending on direction
969                 an event is generated when sensor ENTERS or LEAVES a given state.
970 
971 What:           /sys/.../events/in_activity_still_thresh_rising_value
972 What:           /sys/.../events/in_activity_still_thresh_falling_value
973 What:           /sys/.../events/in_activity_walking_thresh_rising_value
974 What:           /sys/.../events/in_activity_walking_thresh_falling_value
975 What:           /sys/.../events/in_activity_jogging_thresh_rising_value
976 What:           /sys/.../events/in_activity_jogging_thresh_falling_value
977 What:           /sys/.../events/in_activity_running_thresh_rising_value
978 What:           /sys/.../events/in_activity_running_thresh_falling_value
979 KernelVersion:  3.19
980 Contact:        linux-iio@vger.kernel.org
981 Description:
982                 Confidence value (in units as percentage) to be used
983                 for deciding when an event should be generated. E.g for
984                 running: If the confidence value reported by the sensor
985                 is greater than in_activity_running_thresh_rising_value
986                 then the sensor ENTERS running state. Conversely, if the
987                 confidence value reported by the sensor is lower than
988                 in_activity_running_thresh_falling_value then the sensor
989                 is LEAVING running state.
990 
991 What:           /sys/.../iio:deviceX/events/in_accel_mag_en
992 What:           /sys/.../iio:deviceX/events/in_accel_mag_rising_en
993 What:           /sys/.../iio:deviceX/events/in_accel_mag_falling_en
994 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_en
995 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
996 What:           /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
997 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_en
998 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
999 What:           /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1000 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_en
1001 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1002 What:           /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1003 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1004 What:           /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1005 KernelVersion:  2.6.37
1006 Contact:        linux-iio@vger.kernel.org
1007 Description:
1008                 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1009                 magnitude of the channel is compared to the threshold, not its
1010                 signed value.
1011 
1012 What:           /sys/.../events/in_accel_raw_mag_value
1013 What:           /sys/.../events/in_accel_x_raw_mag_rising_value
1014 What:           /sys/.../events/in_accel_y_raw_mag_rising_value
1015 What:           /sys/.../events/in_accel_z_raw_mag_rising_value
1016 KernelVersion:  2.6.37
1017 Contact:        linux-iio@vger.kernel.org
1018 Description:
1019                 The value to which the magnitude of the channel is compared. If
1020                 number or direction is not specified, applies to all channels of
1021                 this type.
1022 
1023 What:           /sys/.../events/in_steps_change_en
1024 KernelVersion:  4.0
1025 Contact:        linux-iio@vger.kernel.org
1026 Description:
1027                 Event generated when channel passes a threshold on the absolute
1028                 change in value. E.g. for steps: a step change event is
1029                 generated each time the user takes N steps, where N is set using
1030                 in_steps_change_value.
1031 
1032 What:           /sys/.../events/in_steps_change_value
1033 KernelVersion:  4.0
1034 Contact:        linux-iio@vger.kernel.org
1035 Description:
1036                 Specifies the value of change threshold that the
1037                 device is comparing against for the events enabled by
1038                 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1039                 if set to 3, a step change event will be generated every 3
1040                 steps.
1041 
1042 What:           /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1043 KernelVersion:  2.6.35
1044 Contact:        linux-iio@vger.kernel.org
1045 Description:
1046                 The name of the trigger source being used, as per string given
1047                 in /sys/class/iio/triggerY/name.
1048 
1049 What:           /sys/bus/iio/devices/iio:deviceX/buffer/length
1050 KernelVersion:  2.6.35
1051 Contact:        linux-iio@vger.kernel.org
1052 Description:
1053                 Number of scans contained by the buffer.
1054 
1055 What:           /sys/bus/iio/devices/iio:deviceX/buffer/enable
1056 KernelVersion:  2.6.35
1057 Contact:        linux-iio@vger.kernel.org
1058 Description:
1059                 Actually start the buffer capture up.  Will start trigger
1060                 if first device and appropriate.
1061 
1062 What:           /sys/bus/iio/devices/iio:deviceX/scan_elements
1063 KernelVersion:  2.6.37
1064 Contact:        linux-iio@vger.kernel.org
1065 Description:
1066                 Directory containing interfaces for elements that will be
1067                 captured for a single triggered sample set in the buffer.
1068 
1069 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1070 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1071 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1072 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1073 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1074 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1075 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1076 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1077 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1078 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1079 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1080 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1081 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1082 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1083 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1084 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1085 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1086 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1087 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1088 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1089 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1090 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1091 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1092 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1093 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_en
1094 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1095 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_en
1096 KernelVersion:  2.6.37
1097 Contact:        linux-iio@vger.kernel.org
1098 Description:
1099                 Scan element control for triggered data capture.
1100 
1101 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type
1102 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1103 What:           /sys/.../iio:deviceX/scan_elements/in_magn_type
1104 What:           /sys/.../iio:deviceX/scan_elements/in_incli_type
1105 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1106 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_type
1107 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1108 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1109 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1110 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1111 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1112 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1113 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1114 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_type
1115 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1116 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_type
1117 KernelVersion:  2.6.37
1118 Contact:        linux-iio@vger.kernel.org
1119 Description:
1120                 Description of the scan element data storage within the buffer
1121                 and hence the form in which it is read from user-space.
1122                 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1123                 be or le specifies big or little endian. s or u specifies if
1124                 signed (2's complement) or unsigned. bits is the number of bits
1125                 of data and storagebits is the space (after padding) that it
1126                 occupies in the buffer. shift if specified, is the shift that
1127                 needs to be applied prior to masking out unused bits. Some
1128                 devices put their data in the middle of the transferred elements
1129                 with additional information on both sides.  Note that some
1130                 devices will have additional information in the unused bits
1131                 so to get a clean value, the bits value must be used to mask
1132                 the buffer output value appropriately.  The storagebits value
1133                 also specifies the data alignment.  So s48/64>>2 will be a
1134                 signed 48 bit integer stored in a 64 bit location aligned to
1135                 a 64 bit boundary. To obtain the clean value, shift right 2
1136                 and apply a mask to zero the top 16 bits of the result.
1137                 For other storage combinations this attribute will be extended
1138                 appropriately.
1139 
1140 What:           /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1141 KernelVersion:  2.6.37
1142 Contact:        linux-iio@vger.kernel.org
1143 Description:
1144                 If the type parameter can take one of a small set of values,
1145                 this attribute lists them.
1146 
1147 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1148 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1149 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1150 What:           /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1151 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1152 What:           /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1153 What:           /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1154 What:           /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1155 What:           /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1156 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1157 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1158 What:           /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1159 What:           /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1160 What:           /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1161 What:           /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1162 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1163 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1164 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1165 What:           /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1166 What:           /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1167 What:           /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1168 What:           /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1169 What:           /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1170 What:           /sys/.../iio:deviceX/scan_elements/in_pressure_index
1171 What:           /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1172 What:           /sys/.../iio:deviceX/scan_elements/in_proximity_index
1173 KernelVersion:  2.6.37
1174 Contact:        linux-iio@vger.kernel.org
1175 Description:
1176                 A single positive integer specifying the position of this
1177                 scan element in the buffer. Note these are not dependent on
1178                 what is enabled and may not be contiguous. Thus for user-space
1179                 to establish the full layout these must be used in conjunction
1180                 with all _en attributes to establish which channels are present,
1181                 and the relevant _type attributes to establish the data storage
1182                 format.
1183 
1184 What:           /sys/.../iio:deviceX/in_activity_still_input
1185 What:           /sys/.../iio:deviceX/in_activity_walking_input
1186 What:           /sys/.../iio:deviceX/in_activity_jogging_input
1187 What:           /sys/.../iio:deviceX/in_activity_running_input
1188 KernelVersion:  3.19
1189 Contact:        linux-iio@vger.kernel.org
1190 Description:
1191                 This attribute is used to read the confidence for an activity
1192                 expressed in units as percentage.
1193 
1194 What:           /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1195 KernelVersion:  2.6.38
1196 Contact:        linux-iio@vger.kernel.org
1197 Description:
1198                 This attribute is used to read the amount of quadrature error
1199                 present in the device at a given time.
1200 
1201 What:           /sys/.../iio:deviceX/in_accelX_power_mode
1202 KernelVersion:  3.11
1203 Contact:        linux-iio@vger.kernel.org
1204 Description:
1205                 Specifies the chip power mode.
1206                 low_noise: reduce noise level from ADC,
1207                 low_power: enable low current consumption.
1208                 For a list of available output power modes read
1209                 in_accel_power_mode_available.
1210 
1211 What:           /sys/.../iio:deviceX/in_energy_input
1212 What:           /sys/.../iio:deviceX/in_energy_raw
1213 KernelVersion:  4.0
1214 Contact:        linux-iio@vger.kernel.org
1215 Description:
1216                 This attribute is used to read the energy value reported by the
1217                 device (e.g.: human activity sensors report energy burnt by the
1218                 user). Units after application of scale are Joules.
1219 
1220 What:           /sys/.../iio:deviceX/in_distance_input
1221 What:           /sys/.../iio:deviceX/in_distance_raw
1222 KernelVersion:  4.0
1223 Contact:        linux-iio@vger.kernel.org
1224 Description:
1225                 This attribute is used to read the distance covered by the user
1226                 since the last reboot while activated. Units after application
1227                 of scale are meters.
1228 
1229 What:           /sys/bus/iio/devices/iio:deviceX/store_eeprom
1230 KernelVersion:  3.4.0
1231 Contact:        linux-iio@vger.kernel.org
1232 Description:
1233                 Writing '1' stores the current device configuration into
1234                 on-chip EEPROM. After power-up or chip reset the device will
1235                 automatically load the saved configuration.
1236 
1237 What:           /sys/.../iio:deviceX/in_proximity_raw
1238 What:           /sys/.../iio:deviceX/in_proximity_input
1239 What:           /sys/.../iio:deviceX/in_proximityY_raw
1240 KernelVersion:  3.4
1241 Contact:        linux-iio@vger.kernel.org
1242 Description:
1243                 Proximity measurement indicating that some
1244                 object is near the sensor, usually by observing
1245                 reflectivity of infrared or ultrasound emitted.
1246                 Often these sensors are unit less and as such conversion
1247                 to SI units is not possible. Higher proximity measurements
1248                 indicate closer objects, and vice versa.
1249 
1250 What:           /sys/.../iio:deviceX/in_illuminance_input
1251 What:           /sys/.../iio:deviceX/in_illuminance_raw
1252 What:           /sys/.../iio:deviceX/in_illuminanceY_input
1253 What:           /sys/.../iio:deviceX/in_illuminanceY_raw
1254 What:           /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1255 What:           /sys/.../iio:deviceX/in_illuminance_ir_raw
1256 What:           /sys/.../iio:deviceX/in_illuminance_clear_raw
1257 KernelVersion:  3.4
1258 Contact:        linux-iio@vger.kernel.org
1259 Description:
1260                 Illuminance measurement, units after application of scale
1261                 and offset are lux.
1262 
1263 What:           /sys/.../iio:deviceX/in_intensityY_raw
1264 What:           /sys/.../iio:deviceX/in_intensityY_ir_raw
1265 What:           /sys/.../iio:deviceX/in_intensityY_both_raw
1266 What:           /sys/.../iio:deviceX/in_intensityY_uv_raw
1267 KernelVersion:  3.4
1268 Contact:        linux-iio@vger.kernel.org
1269 Description:
1270                 Unit-less light intensity. Modifiers both and ir indicate
1271                 that measurements contains visible and infrared light
1272                 components or just infrared light, respectively. Modifier uv indicates
1273                 that measurements contain ultraviolet light components.
1274 
1275 What:           /sys/.../iio:deviceX/in_uvindex_input
1276 KernelVersion:  4.6
1277 Contact:        linux-iio@vger.kernel.org
1278 Description:
1279                 UV light intensity index measuring the human skin's response to
1280                 different wavelength of sunlight weighted according to the
1281                 standardised CIE Erythemal Action Spectrum. UV index values range
1282                 from 0 (low) to >=11 (extreme).
1283 
1284 What:           /sys/.../iio:deviceX/in_intensity_red_integration_time
1285 What:           /sys/.../iio:deviceX/in_intensity_green_integration_time
1286 What:           /sys/.../iio:deviceX/in_intensity_blue_integration_time
1287 What:           /sys/.../iio:deviceX/in_intensity_clear_integration_time
1288 What:           /sys/.../iio:deviceX/in_illuminance_integration_time
1289 KernelVersion:  3.12
1290 Contact:        linux-iio@vger.kernel.org
1291 Description:
1292                 This attribute is used to get/set the integration time in
1293                 seconds.
1294 
1295 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1296 KernelVersion:  4.0
1297 Contact:        linux-iio@vger.kernel.org
1298 Description:
1299                 Number of seconds in which to compute speed.
1300 
1301 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1302 KernelVersion:  3.15
1303 Contact:        linux-iio@vger.kernel.org
1304 Description:
1305                 Raw value of quaternion components using a format
1306                 x y z w. Here x, y, and z component represents the axis about
1307                 which a rotation will occur and w component represents the
1308                 amount of rotation.
1309 
1310 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1311 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1312 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1313 What:           /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1314 KernelVersion:  3.15
1315 Contact:        linux-iio@vger.kernel.org
1316 Description:
1317                 Raw value of rotation from true/magnetic north measured with
1318                 or without compensation from tilt sensors.
1319 
1320 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1321 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1322 What:           /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1323 KernelVersion:  3.18
1324 Contact:        linux-iio@vger.kernel.org
1325 Description:
1326                 Raw current measurement from channel X. Units are in milliamps
1327                 after application of scale and offset. If no offset or scale is
1328                 present, output should be considered as processed with the
1329                 unit in milliamps.
1330 
1331                 Channels with 'i' and 'q' modifiers always exist in pairs and both
1332                 channels refer to the same signal. The 'i' channel contains the in-phase
1333                 component of the signal while the 'q' channel contains the quadrature
1334                 component.
1335 
1336 What:           /sys/.../iio:deviceX/in_energy_en
1337 What:           /sys/.../iio:deviceX/in_distance_en
1338 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1339 What:           /sys/.../iio:deviceX/in_steps_en
1340 KernelVersion:  3.19
1341 Contact:        linux-iio@vger.kernel.org
1342 Description:
1343                 Activates a device feature that runs in firmware/hardware.
1344                 E.g. for steps: the pedometer saves power while not used;
1345                 when activated, it will count the steps taken by the user in
1346                 firmware and export them through in_steps_input.
1347 
1348 What:           /sys/.../iio:deviceX/in_steps_input
1349 KernelVersion:  3.19
1350 Contact:        linux-iio@vger.kernel.org
1351 Description:
1352                 This attribute is used to read the number of steps taken by the user
1353                 since the last reboot while activated.
1354 
1355 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1356 What:           /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1357 KernelVersion:  3.19
1358 Contact:        linux-iio@vger.kernel.org
1359 Description:
1360                 This attribute is used to read the current speed value of the
1361                 user (which is the norm or magnitude of the velocity vector).
1362                 Units after application of scale are m/s.
1363 
1364 What:           /sys/.../iio:deviceX/in_steps_debounce_count
1365 KernelVersion:  4.0
1366 Contact:        linux-iio@vger.kernel.org
1367 Description:
1368                 Specifies the number of steps that must occur within
1369                 in_steps_filter_debounce_time for the pedometer to decide the
1370                 consumer is making steps.
1371 
1372 What:           /sys/.../iio:deviceX/in_steps_debounce_time
1373 KernelVersion:  4.0
1374 Contact:        linux-iio@vger.kernel.org
1375 Description:
1376                 Specifies number of seconds in which we compute the steps
1377                 that occur in order to decide if the consumer is making steps.
1378 
1379 What:           /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1380 KernelVersion:  4.2
1381 Contact:        linux-iio@vger.kernel.org
1382 Description:
1383                 A single positive integer specifying the maximum number of scan
1384                 elements to wait for.
1385                 Poll will block until the watermark is reached.
1386                 Blocking read will wait until the minimum between the requested
1387                 read amount or the low water mark is available.
1388                 Non-blocking read will retrieve the available samples from the
1389                 buffer even if there are less samples then watermark level. This
1390                 allows the application to block on poll with a timeout and read
1391                 the available samples after the timeout expires and thus have a
1392                 maximum delay guarantee.
1393 
1394 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1395 KernelVersion: 4.2
1396 Contact:        linux-iio@vger.kernel.org
1397 Description:
1398                 A read-only boolean value that indicates if the hardware fifo is
1399                 currently enabled or disabled. If the device does not have a
1400                 hardware fifo this entry is not present.
1401                 The hardware fifo is enabled when the buffer is enabled if the
1402                 current hardware fifo watermark level is set and other current
1403                 device settings allows it (e.g. if a trigger is set that samples
1404                 data differently that the hardware fifo does then hardware fifo
1405                 will not enabled).
1406                 If the hardware fifo is enabled and the level of the hardware
1407                 fifo reaches the hardware fifo watermark level the device will
1408                 flush its hardware fifo to the device buffer. Doing a non
1409                 blocking read on the device when no samples are present in the
1410                 device buffer will also force a flush.
1411                 When the hardware fifo is enabled there is no need to use a
1412                 trigger to use buffer mode since the watermark settings
1413                 guarantees that the hardware fifo is flushed to the device
1414                 buffer.
1415 
1416 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1417 KernelVersion: 4.2
1418 Contact:        linux-iio@vger.kernel.org
1419 Description:
1420                 Read-only entry that contains a single integer specifying the
1421                 current watermark level for the hardware fifo. If the device
1422                 does not have a hardware fifo this entry is not present.
1423                 The watermark level for the hardware fifo is set by the driver
1424                 based on the value set by the user in buffer/watermark but
1425                 taking into account hardware limitations (e.g. most hardware
1426                 buffers are limited to 32-64 samples, some hardware buffers
1427                 watermarks are fixed or have minimum levels).  A value of 0
1428                 means that the hardware watermark is unset.
1429 
1430 What:           /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1431 KernelVersion: 4.2
1432 Contact:       linux-iio@vger.kernel.org
1433 Description:
1434                 A single positive integer specifying the minimum watermark level
1435                 for the hardware fifo of this device. If the device does not
1436                 have a hardware fifo this entry is not present.
1437                 If the user sets buffer/watermark to a value less than this one,
1438                 then the hardware watermark will remain unset.
1439 
1440 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1441 KernelVersion: 4.2
1442 Contact:       linux-iio@vger.kernel.org
1443 Description:
1444                 A single positive integer specifying the maximum watermark level
1445                 for the hardware fifo of this device. If the device does not
1446                 have a hardware fifo this entry is not present.
1447                 If the user sets buffer/watermark to a value greater than this
1448                 one, then the hardware watermark will be capped at this value.
1449 
1450 What:          /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1451 KernelVersion: 4.2
1452 Contact:       linux-iio@vger.kernel.org
1453 Description:
1454                 A list of positive integers specifying the available watermark
1455                 levels for the hardware fifo. This entry is optional and if it
1456                 is not present it means that all the values between
1457                 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1458                 If the user sets buffer/watermark to a value greater than
1459                 hwfifo_watermak_min but not equal to any of the values in this
1460                 list, the driver will chose an appropriate value for the
1461                 hardware fifo watermark level.
1462 
1463 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1464 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1465 What:           /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1466 What:           /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1467 KernelVersion:  4.1
1468 Contact:        linux-iio@vger.kernel.org
1469 Description:
1470                 The emissivity ratio of the surface in the field of view of the
1471                 contactless temperature sensor.  Emissivity varies from 0 to 1,
1472                 with 1 being the emissivity of a black body.
1473 
1474 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1475 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1476 What:           /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1477 KernelVersion:  4.2
1478 Contact:        linux-iio@vger.kernel.org
1479 Description:
1480                 Hardware applied number of measurements for acquiring one
1481                 data point. The HW will do <type>[_name]_oversampling_ratio
1482                 measurements and return the average value as output data. Each
1483                 value resulted from <type>[_name]_oversampling_ratio measurements
1484                 is considered as one sample for <type>[_name]_sampling_frequency.
1485 
1486 What:           /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1487 What:           /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1488 What:           /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1489 What:           /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1490 What:           /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1491 What:           /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1492 KernelVersion:  4.3
1493 Contact:        linux-iio@vger.kernel.org
1494 Description:
1495                 Raw (unscaled no offset etc.) percentage reading of a substance.
1496 
1497 What:           /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1498 What:           /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1499 What:           /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1500 What:           /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1501 KernelVersion:  4.3
1502 Contact:        linux-iio@vger.kernel.org
1503 Description:
1504                 Raw (unscaled no offset etc.) resistance reading that can be processed
1505                 into an ohm value.
1506 
1507 What:           /sys/bus/iio/devices/iio:deviceX/heater_enable
1508 KernelVersion:  4.1.0
1509 Contact:        linux-iio@vger.kernel.org
1510 Description:
1511                 '1' (enable) or '0' (disable) specifying the enable
1512                 of heater function. Same reading values apply
1513                 This ABI is especially applicable for humidity sensors
1514                 to heatup the device and get rid of any condensation
1515                 in some humidity environment
1516 
1517 What:           /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1518 KernelVersion:  4.5
1519 Contact:        linux-iio@vger.kernel.org
1520 Description:
1521                 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1522                 base-10 logarithm of hydrodium ions in a litre of water.
1523 
1524 What:           /sys/bus/iio/devices/iio:deviceX/mount_matrix
1525 What:           /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1526 What:           /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1527 What:           /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1528 What:           /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1529 KernelVersion:  4.6
1530 Contact:        linux-iio@vger.kernel.org
1531 Description:
1532                 Mounting matrix for IIO sensors. This is a rotation matrix which
1533                 informs userspace about sensor chip's placement relative to the
1534                 main hardware it is mounted on.
1535                 Main hardware placement is defined according to the local
1536                 reference frame related to the physical quantity the sensor
1537                 measures.
1538                 Given that the rotation matrix is defined in a board specific
1539                 way (platform data and / or device-tree), the main hardware
1540                 reference frame definition is left to the implementor's choice
1541                 (see below for a magnetometer example).
1542                 Applications should apply this rotation matrix to samples so
1543                 that when main hardware reference frame is aligned onto local
1544                 reference frame, then sensor chip reference frame is also
1545                 perfectly aligned with it.
1546                 Matrix is a 3x3 unitary matrix and typically looks like
1547                 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1548                 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1549                 are perfectly aligned with each other.
1550 
1551                 For example, a mounting matrix for a magnetometer sensor informs
1552                 userspace about sensor chip's ORIENTATION relative to the main
1553                 hardware.
1554                 More specifically, main hardware orientation is defined with
1555                 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1556                 * Y is in the ground plane and positive towards magnetic North ;
1557                 * X is in the ground plane, perpendicular to the North axis and
1558                   positive towards the East ;
1559                 * Z is perpendicular to the ground plane and positive upwards.
1560 
1561                 An implementor might consider that for a hand-held device, a
1562                 'natural' orientation would be 'front facing camera at the top'.
1563                 The main hardware reference frame could then be described as :
1564                 * Y is in the plane of the screen and is positive towards the
1565                   top of the screen ;
1566                 * X is in the plane of the screen, perpendicular to Y axis, and
1567                   positive towards the right hand side of the screen ;
1568                 * Z is perpendicular to the screen plane and positive out of the
1569                   screen.
1570                 Another example for a quadrotor UAV might be :
1571                 * Y is in the plane of the propellers and positive towards the
1572                   front-view camera;
1573                 * X is in the plane of the propellers, perpendicular to Y axis,
1574                   and positive towards the starboard side of the UAV ;
1575                 * Z is perpendicular to propellers plane and positive upwards.
1576 
1577 What:           /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1578 KernelVersion:  4.8
1579 Contact:        linux-iio@vger.kernel.org
1580 Description:
1581                 Raw (unscaled no offset etc.) electric conductivity reading that
1582                 can be processed to siemens per meter.
1583 
1584 What:           /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1585 KernelVersion:  4.9
1586 Contact:        linux-iio@vger.kernel.org
1587 Description:
1588                 Raw counter device counts from channel Y. For quadrature
1589                 counters, multiplication by an available [Y]_scale results in
1590                 the counts of a single quadrature signal phase from channel Y.
1591 
1592 What:           /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1593 KernelVersion:  4.9
1594 Contact:        linux-iio@vger.kernel.org
1595 Description:
1596                 Raw counter device index value from channel Y. This attribute
1597                 provides an absolute positional reference (e.g. a pulse once per
1598                 revolution) which may be used to home positional systems as
1599                 required.

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