drivers/staging/iio/Documentation/sysfs-bus-iio

   1 What:           /sys/bus/iio/devices/deviceX
   2 KernelVersion:  2.6.35
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Hardware chip or device accessed by on 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/deviceX:buffer
  23 KernelVersion:  2.6.35
  24 Contact:        linux-iio@vger.kernel.org
  25 Description:
  26                 Link to /sys/class/iio/deviceX/deviceX:buffer. X indicates
  27                 the device with which this buffer buffer is associated.
  28
  29 What:           /sys/bus/iio/devices/deviceX/name
  30 KernelVersion:  2.6.35
  31 Contact:        linux-iio@vger.kernel.org
  32 Description:
  33                 Description of the physical chip / device for device X.
  34                 Typically a part number.
  35
  36 What:           /sys/bus/iio/devices/deviceX/sampling_frequency
  37 KernelVersion:  2.6.35
  38 Contact:        linux-iio@vger.kernel.org
  39 Description:
  40                 Some devices have internal clocks.  This parameter sets the
  41                 resulting sampling frequency.  In many devices this
  42                 parameter has an effect on input filters etc rather than
  43                 simply controlling when the input is sampled.  As this
  44                 effects datardy triggers, hardware buffers and the sysfs
  45                 direct access interfaces, it may be found in any of the
  46                 relevant directories.  If it effects all of the above
  47                 then it is to be found in the base device directory as here.
  48
  49 What:           /sys/bus/iio/devices/deviceX/sampling_frequency_available
  50 KernelVersion:  2.6.35
  51 Contact:        linux-iio@vger.kernel.org
  52 Description:
  53                 When the internal sampling clock can only take a small
  54                 discrete set of values, this file lists those available.
  55
  56 What:           /sys/bus/iio/devices/deviceX/range
  57 KernelVersion:  2.6.38
  58 Contact:        linux-iio@vger.kernel.org
  59 Description:
  60                 Hardware dependent ADC Full Scale Range in mVolt.
  61
  62 What:           /sys/bus/iio/devices/deviceX/range_available
  63 KernelVersion:  2.6.38
  64 Contact:        linux-iio@vger.kernel.org
  65 Description:
  66                 Hardware dependent supported vales for ADC Full Scale Range.
  67
  68 What:           /sys/bus/iio/devices/deviceX/oversampling_ratio
  69 KernelVersion:  2.6.38
  70 Contact:        linux-iio@vger.kernel.org
  71 Description:
  72                 Hardware dependent ADC oversampling. Controls the sampling ratio
  73                 of the digital filter if available.
  74
  75 What:           /sys/bus/iio/devices/deviceX/oversampling_ratio_available
  76 KernelVersion:  2.6.38
  77 Contact:        linux-iio@vger.kernel.org
  78 Description:
  79                 Hardware dependent values supported by the oversampling filter.
  80
  81 What:           /sys/bus/iio/devices/deviceX/inY_raw
  82 What:           /sys/bus/iio/devices/deviceX/inY_supply_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.
  91
  92 What:           /sys/bus/iio/devices/deviceX/inY-inZ_raw
  93 KernelVersion:  2.6.35
  94 Contact:        linux-iio@vger.kernel.org
  95 Description:
  96                 Raw (unscaled) differential voltage measurement equivalent to
  97                 channel Y - channel Z where these channel numbers apply to the
  98                 physically equivalent inputs when non differential readings are
  99                 separately available. In differential only parts, then all that
 100                 is required is a consistent labeling.
 101
 102 What:           /sys/bus/iio/devices/deviceX/temp_raw
 103 What:           /sys/bus/iio/devices/deviceX/temp_x_raw
 104 What:           /sys/bus/iio/devices/deviceX/temp_y_raw
 105 What:           /sys/bus/iio/devices/deviceX/temp_z_raw
 106 KernelVersion:  2.6.35
 107 Contact:        linux-iio@vger.kernel.org
 108 Description:
 109                 Raw (unscaled no bias removal etc) temperature measurement.
 110                 It an axis is specified it generally means that the temperature
 111                 sensor is associated with one part of a compound device (e.g.
 112                 a gyroscope axis).
 113
 114 What:           /sys/bus/iio/devices/deviceX/accel_x_raw
 115 What:           /sys/bus/iio/devices/deviceX/accel_y_raw
 116 What:           /sys/bus/iio/devices/deviceX/accel_z_raw
 117 KernelVersion:  2.6.35
 118 Contact:        linux-iio@vger.kernel.org
 119 Description:
 120                 Acceleration in direction x, y or z (may be arbitrarily assigned
 121                 but should match other such assignments on device)
 122                 channel m (not present if only one accelerometer channel at
 123                 this orientation). Has all of the equivalent parameters as per
 124                 inY. Units after application of scale and offset are m/s^2.
 125
 126 What:           /sys/bus/iio/devices/deviceX/gyro_x_raw
 127 What:           /sys/bus/iio/devices/deviceX/gyro_y_raw
 128 What:           /sys/bus/iio/devices/deviceX/gyro_z_raw
 129 KernelVersion:  2.6.35
 130 Contact:        linux-iio@vger.kernel.org
 131 Description:
 132                 Angular velocity about axis x, y or z (may be arbitrarily
 133                 assigned) Data converted by application of offset then scale to
 134                 radians per second. Has all the equivalent parameters as
 135                 per inY.
 136
 137 What:           /sys/bus/iio/devices/deviceX/incli_x_raw
 138 What:           /sys/bus/iio/devices/deviceX/incli_y_raw
 139 What:           /sys/bus/iio/devices/deviceX/incli_z_raw
 140 KernelVersion:  2.6.35
 141 Contact:        linux-iio@vger.kernel.org
 142 Description:
 143                 Inclination raw reading about axis x, y or z (may be
 144                 arbitrarily assigned). Data converted by application of offset
 145                 and scale to Degrees.
 146
 147 What:           /sys/bus/iio/devices/deviceX/magn_x_raw
 148 What:           /sys/bus/iio/devices/deviceX/magn_y_raw
 149 What:           /sys/bus/iio/devices/deviceX/magn_z_raw
 150 KernelVersion:  2.6.35
 151 Contact:        linux-iio@vger.kernel.org
 152 Description:
 153                 Magnetic field along axis x, y or z (may be arbitrarily
 154                 assigned) channel m (not present if only one magnetometer
 155                 at this orientation).  Data converted by application of
 156                 offset then scale to Gauss. Has all the equivalent modifiers
 157                 as per inY.
 158
 159 What:           /sys/bus/iio/devices/deviceX/accel_x_peak_raw
 160 What:           /sys/bus/iio/devices/deviceX/accel_y_peak_raw
 161 What:           /sys/bus/iio/devices/deviceX/accel_z_peak_raw
 162 KernelVersion:  2.6.36
 163 Contact:        linux-iio@vger.kernel.org
 164 Description:
 165                 Some devices provide a store of the highest value seen since
 166                 some reset condition.  These attributes allow access to this
 167                 and are otherwise the direct equivalent of the
 168                 <type>Y[_name]_raw attributes.
 169
 170 What:           /sys/bus/iio/devices/deviceX/accel_xyz_squared_peak_raw
 171 KernelVersion:  2.6.36
 172 Contact:        linux-iio@vger.kernel.org
 173 Description:
 174                 A computed peak value based on the sum squared magnitude of
 175                 the underlying value in the specified directions.
 176
 177 What:           /sys/bus/iio/devices/deviceX/accel_offset
 178 What:           /sys/bus/iio/devices/deviceX/temp_offset
 179 KernelVersion:  2.6.35
 180 Contact:        linux-iio@vger.kernel.org
 181 Description:
 182                 If known for a device, offset to be added to <type>[Y]_raw prior
 183                 to scaling by <type>[Y]_scale in order to obtain value in the
 184                 <type> units as specified in <type>[y]_raw documentation.
 185                 Not present if the offset is always 0 or unknown. If Y is not
 186                 present, then the offset applies to all in channels of <type>.
 187                 May be writable if a variable offset can be applied on the
 188                 device. Note that this is different to calibbias which
 189                 is for devices (or drivers) that apply offsets to compensate
 190                 for variation between different instances of the part, typically
 191                 adjusted by using some hardware supported calibration procedure.
 192
 193 What:           /sys/bus/iio/devices/deviceX/inY_scale
 194 What:           /sys/bus/iio/devices/deviceX/inY_supply_scale
 195 What:           /sys/bus/iio/devices/deviceX/in_scale
 196 What:           /sys/bus/iio/devices/deviceX/outY_scale
 197 What:           /sys/bus/iio/devices/deviceX/accel_scale
 198 What:           /sys/bus/iio/devices/deviceX/accel_peak_scale
 199 What:           /sys/bus/iio/devices/deviceX/gyro_scale
 200 What:           /sys/bus/iio/devices/deviceX/magn_scale
 201 What:           /sys/bus/iio/devices/deviceX/magn_x_scale
 202 What:           /sys/bus/iio/devices/deviceX/magn_y_scale
 203 What:           /sys/bus/iio/devices/deviceX/magn_z_scale
 204 KernelVersion:  2.6.35
 205 Contact:        linux-iio@vger.kernel.org
 206 Description:
 207                 If known for a device, scale to be applied to <type>Y[_name]_raw
 208                 post addition of <type>[Y][_name]_offset in order to obtain the
 209                 measured value in <type> units as specified in
 210                 <type>[Y][_name]_raw documentation..  If shared across all in
 211                 channels then Y is not present and the value is called
 212                 <type>[Y][_name]_scale. The peak modifier means this value
 213                 is applied to <type>Y[_name]_peak_raw values.
 214
 215 What:           /sys/bus/iio/devices/deviceX/accel_x_calibbias
 216 What:           /sys/bus/iio/devices/deviceX/accel_y_calibbias
 217 What:           /sys/bus/iio/devices/deviceX/accel_z_calibbias
 218 What:           /sys/bus/iio/devices/deviceX/gyro_x_calibbias
 219 What:           /sys/bus/iio/devices/deviceX/gyro_y_calibbias
 220 What:           /sys/bus/iio/devices/deviceX/gyro_z_calibbias
 221 KernelVersion:  2.6.35
 222 Contact:        linux-iio@vger.kernel.org
 223 Description:
 224                 Hardware applied calibration offset. (assumed to fix production
 225                 inaccuracies). If shared across all channels, <type>_calibbias
 226                 is used.
 227
 228 What            /sys/bus/iio/devices/deviceX/inY_calibscale
 229 What            /sys/bus/iio/devices/deviceX/inY_supply_calibscale
 230 What            /sys/bus/iio/devices/deviceX/in_calibscale
 231 What            /sys/bus/iio/devices/deviceX/accel_x_calibscale
 232 What            /sys/bus/iio/devices/deviceX/accel_y_calibscale
 233 What            /sys/bus/iio/devices/deviceX/accel_z_calibscale
 234 What            /sys/bus/iio/devices/deviceX/gyro_x_calibscale
 235 What            /sys/bus/iio/devices/deviceX/gyro_y_calibscale
 236 What            /sys/bus/iio/devices/deviceX/gyro_z_calibscale
 237 KernelVersion:  2.6.35
 238 Contact:        linux-iio@vger.kernel.org
 239 Description:
 240                 Hardware applied calibration scale factor. (assumed to fix
 241                 production inaccuracies).  If shared across all channels,
 242                 <type>_calibscale is used.
 243
 244 What:           /sys/bus/iio/devices/deviceX/accel_scale_available
 245 KernelVersion:  2.635
 246 Contact:        linux-iio@vger.kernel.org
 247 Description:
 248                 If a discrete set of scale values are available, they
 249                 are listed in this attribute.
 250
 251 What:           /sys/bus/iio/devices/deviceX/outY_raw
 252 KernelVersion:  2.6.37
 253 Contact:        linux-iio@vger.kernel.org
 254 Description:
 255                 Raw (unscaled, no bias etc.) output voltage for
 256                 channel Y.  The number must always be specified and
 257                 unique if the output corresponds to a single channel.
 258
 259 What:           /sys/bus/iio/devices/deviceX/outY&Z_raw
 260 KernelVersion:  2.6.37
 261 Contact:        linux-iio@vger.kernel.org
 262 Description:
 263                 Raw (unscaled, no bias etc.) output voltage for an aggregate of
 264                 channel Y, channel Z, etc.  This interface is available in cases
 265                 where a single output sets the value for multiple channels
 266                 simultaneously.
 267
 268 What:           /sys/bus/iio/devices/deviceX/deviceX:eventY
 269 KernelVersion:  2.6.35
 270 Contact:        linux-iio@vger.kernel.org
 271 Description:
 272                 Configuration of which hardware generated events are passed up
 273                 to user-space.
 274
 275 What:           /sys/bus/iio/devices/deviceX:event/dev
 276 What:           /sys/bus/iio/devices/deviceX:eventY/dev
 277 KernelVersion:  2.6.35
 278 Contact:        linux-iio@vger.kernel.org
 279 Description:
 280                 major:minor character device numbers for the event line Y of
 281                 device X.
 282
 283 What:           /sys/.../deviceX:eventY/accel_x_thresh_rising_en
 284 What:           /sys/.../deviceX:eventY/accel_x_thresh_falling_en
 285 What:           /sys/.../deviceX:eventY/accel_y_thresh_rising_en
 286 What:           /sys/.../deviceX:eventY/accel_y_thresh_falling_en
 287 What:           /sys/.../deviceX:eventY/accel_z_thresh_rising_en
 288 What:           /sys/.../deviceX:eventY/accel_z_thresh_falling_en
 289 What:           /sys/.../deviceX:eventY/gyro_x_thresh_rising_en
 290 What:           /sys/.../deviceX:eventY/gyro_x_thresh_falling_en
 291 What:           /sys/.../deviceX:eventY/gyro_y_thresh_rising_en
 292 What:           /sys/.../deviceX:eventY/gyro_y_thresh_falling_en
 293 What:           /sys/.../deviceX:eventY/gyro_z_thresh_rising_en
 294 What:           /sys/.../deviceX:eventY/gyro_z_thresh_falling_en
 295 What:           /sys/.../deviceX:eventY/magn_x_thresh_rising_en
 296 What:           /sys/.../deviceX:eventY/magn_x_thresh_falling_en
 297 What:           /sys/.../deviceX:eventY/magn_y_thresh_rising_en
 298 What:           /sys/.../deviceX:eventY/magn_y_thresh_falling_en
 299 What:           /sys/.../deviceX:eventY/magn_z_thresh_rising_en
 300 What:           /sys/.../deviceX:eventY/magn_z_thresh_falling_en
 301 What:           /sys/.../deviceX:eventY/inZ_supply_thresh_rising_en
 302 What:           /sys/.../deviceX:eventY/inZ_supply_thresh_falling_en
 303 What:           /sys/.../deviceX:eventY/inZ_thresh_rising_en
 304 What:           /sys/.../deviceX:eventY/inZ_thresh_falling_en
 305 What:           /sys/.../deviceX:eventY/temp_thresh_rising_en
 306 What:           /sys/.../deviceX:eventY/temp_thresh_falling_en
 307 KernelVersion:  2.6.37
 308 Contact:        linux-iio@vger.kernel.org
 309 Description:
 310                 Event generated when channel passes a threshold in the specified
 311                 (_rising|_falling) direction. If the direction is not specified,
 312                 then either the device will report an event which ever direction
 313                 a single threshold value is called in (e.g.
 314                 <type>[Z][_name]_<raw|input>_thresh_value) or
 315                 <type>[Z][_name]_<raw|input>_thresh_rising_value and
 316                 <type>[Z][_name]_<raw|input>_thresh_falling_value may take
 317                 different values, but the device can only enable both thresholds
 318                 or neither.
 319                 Note the driver will assume the last p events requested are
 320                 to be enabled where p is however many it supports (which may
 321                 vary depending on the exact set requested. So if you want to be
 322                 sure you have set what you think you have, check the contents of
 323                 these attributes after everything is configured. Drivers may
 324                 have to buffer any parameters so that they are consistent when
 325                 a given event type is enabled a future point (and not those for
 326                 whatever event was previously enabled).
 327
 328 What:           /sys/.../deviceX:eventY/accel_x_roc_rising_en
 329 What:           /sys/.../deviceX:eventY/accel_x_roc_falling_en
 330 What:           /sys/.../deviceX:eventY/accel_y_roc_rising_en
 331 What:           /sys/.../deviceX:eventY/accel_y_roc_falling_en
 332 What:           /sys/.../deviceX:eventY/accel_z_roc_rising_en
 333 What:           /sys/.../deviceX:eventY/accel_z_roc_falling_en
 334 What:           /sys/.../deviceX:eventY/gyro_x_roc_rising_en
 335 What:           /sys/.../deviceX:eventY/gyro_x_roc_falling_en
 336 What:           /sys/.../deviceX:eventY/gyro_y_roc_rising_en
 337 What:           /sys/.../deviceX:eventY/gyro_y_roc_falling_en
 338 What:           /sys/.../deviceX:eventY/gyro_z_roc_rising_en
 339 What:           /sys/.../deviceX:eventY/gyro_z_roc_falling_en
 340 What:           /sys/.../deviceX:eventY/magn_x_roc_rising_en
 341 What:           /sys/.../deviceX:eventY/magn_x_roc_falling_en
 342 What:           /sys/.../deviceX:eventY/magn_y_roc_rising_en
 343 What:           /sys/.../deviceX:eventY/magn_y_roc_falling_en
 344 What:           /sys/.../deviceX:eventY/magn_z_roc_rising_en
 345 What:           /sys/.../deviceX:eventY/magn_z_roc_falling_en
 346 What:           /sys/.../deviceX:eventY/inZ_supply_roc_rising_en
 347 What:           /sys/.../deviceX:eventY/inZ_supply_roc_falling_en
 348 What:           /sys/.../deviceX:eventY/inZ_roc_rising_en
 349 What:           /sys/.../deviceX:eventY/inZ_roc_falling_en
 350 What:           /sys/.../deviceX:eventY/temp_roc_rising_en
 351 What:           /sys/.../deviceX:eventY/temp_roc_falling_en
 352 KernelVersion:  2.6.37
 353 Contact:        linux-iio@vger.kernel.org
 354 Description:
 355                 Event generated when channel passes a threshold on the rate of
 356                 change (1st differential) in the specified (_rising|_falling)
 357                 direction. If the direction is not specified, then either the
 358                 device will report an event which ever direction a single
 359                 threshold value is called in (e.g.
 360                 <type>[Z][_name]_<raw|input>_roc_value) or
 361                 <type>[Z][_name]_<raw|input>_roc_rising_value and
 362                 <type>[Z][_name]_<raw|input>_roc_falling_value may take
 363                 different values, but the device can only enable both rate of
 364                 change thresholds or neither.
 365                 Note the driver will assume the last p events requested are
 366                 to be enabled where p is however many it supports (which may
 367                 vary depending on the exact set requested. So if you want to be
 368                 sure you have set what you think you have, check the contents of
 369                 these attributes after everything is configured. Drivers may
 370                 have to buffer any parameters so that they are consistent when
 371                 a given event type is enabled a future point (and not those for
 372                 whatever event was previously enabled).
 373
 374 What:           /sys/.../deviceX:eventY/accel_x_raw_thresh_rising_value
 375 What:           /sys/.../deviceX:eventY/accel_x_raw_thresh_falling_value
 376 What:           /sys/.../deviceX:eventY/accel_y_raw_thresh_rising_value
 377 What:           /sys/.../deviceX:eventY/accel_y_raw_thresh_falling_value
 378 What:           /sys/.../deviceX:eventY/accel_z_raw_thresh_rising_value
 379 What:           /sys/.../deviceX:eventY/accel_z_raw_thresh_falling_value
 380 What:           /sys/.../deviceX:eventY/gyro_x_raw_thresh_rising_value
 381 What:           /sys/.../deviceX:eventY/gyro_x_raw_thresh_falling_value
 382 What:           /sys/.../deviceX:eventY/gyro_y_raw_thresh_rising_value
 383 What:           /sys/.../deviceX:eventY/gyro_y_raw_thresh_falling_value
 384 What:           /sys/.../deviceX:eventY/gyro_z_raw_thresh_rising_value
 385 What:           /sys/.../deviceX:eventY/gyro_z_raw_thresh_falling_value
 386 What:           /sys/.../deviceX:eventY/magn_x_raw_thresh_rising_value
 387 What:           /sys/.../deviceX:eventY/magn_x_raw_thresh_falling_value
 388 What:           /sys/.../deviceX:eventY/magn_y_raw_thresh_rising_value
 389 What:           /sys/.../deviceX:eventY/magn_y_raw_thresh_falling_value
 390 What:           /sys/.../deviceX:eventY/magn_z_raw_thresh_rising_value
 391 What:           /sys/.../deviceX:eventY/magn_z_raw_thresh_falling_value
 392 What:           /sys/.../deviceX:eventY/inZ_supply_raw_thresh_rising_value
 393 What:           /sys/.../deviceX:eventY/inZ_supply_raw_thresh_falling_value
 394 What:           /sys/.../deviceX:eventY/inZ_raw_thresh_falling_value
 395 What:           /sys/.../deviceX:eventY/inZ_raw_thresh_falling_value
 396 What:           /sys/.../deviceX:eventY/temp_raw_thresh_falling_value
 397 What:           /sys/.../deviceX:eventY/temp_raw_thresh_falling_value
 398 KernelVersion:  2.6.37
 399 Contact:        linux-iio@vger.kernel.org
 400 Description:
 401                 Specifies the value of threshold that the device is comparing
 402                 against for the events enabled by
 403                 <type>Z[_name]_thresh[_rising|falling]_en.
 404                 If separate attributes  exist for the two directions, but
 405                 direction is not specified for this attribute, then a single
 406                 threshold value applies to both directions.
 407                 The raw or input element of the name indicates whether the
 408                 value is in raw device units or in processed units (as _raw
 409                 and _input do on sysfs direct channel read attributes).
 410
 411 What:           /sys/.../deviceX:eventY/accel_x_raw_roc_rising_value
 412 What:           /sys/.../deviceX:eventY/accel_x_raw_roc_falling_value
 413 What:           /sys/.../deviceX:eventY/accel_y_raw_roc_rising_value
 414 What:           /sys/.../deviceX:eventY/accel_y_raw_roc_falling_value
 415 What:           /sys/.../deviceX:eventY/accel_z_raw_roc_rising_value
 416 What:           /sys/.../deviceX:eventY/accel_z_raw_roc_falling_value
 417 What:           /sys/.../deviceX:eventY/gyro_x_raw_roc_rising_value
 418 What:           /sys/.../deviceX:eventY/gyro_x_raw_roc_falling_value
 419 What:           /sys/.../deviceX:eventY/gyro_y_raw_roc_rising_value
 420 What:           /sys/.../deviceX:eventY/gyro_y_raw_roc_falling_value
 421 What:           /sys/.../deviceX:eventY/gyro_z_raw_roc_rising_value
 422 What:           /sys/.../deviceX:eventY/gyro_z_raw_roc_falling_value
 423 What:           /sys/.../deviceX:eventY/magn_x_raw_roc_rising_value
 424 What:           /sys/.../deviceX:eventY/magn_x_raw_roc_falling_value
 425 What:           /sys/.../deviceX:eventY/magn_y_raw_roc_rising_value
 426 What:           /sys/.../deviceX:eventY/magn_y_raw_roc_falling_value
 427 What:           /sys/.../deviceX:eventY/magn_z_raw_roc_rising_value
 428 What:           /sys/.../deviceX:eventY/magn_z_raw_roc_falling_value
 429 What:           /sys/.../deviceX:eventY/inZ_supply_raw_roc_rising_value
 430 What:           /sys/.../deviceX:eventY/inZ_supply_raw_roc_falling_value
 431 What:           /sys/.../deviceX:eventY/inZ_raw_roc_falling_value
 432 What:           /sys/.../deviceX:eventY/inZ_raw_roc_falling_value
 433 What:           /sys/.../deviceX:eventY/temp_raw_roc_falling_value
 434 What:           /sys/.../deviceX:eventY/temp_raw_roc_falling_value
 435 KernelVersion:  2.6.37
 436 Contact:        linux-iio@vger.kernel.org
 437 Description:
 438                 Specifies the value of rate of change threshold that the
 439                 device is comparing against for the events enabled by
 440                 <type>[Z][_name]_roc[_rising|falling]_en.
 441                 If separate attributes exist for the two directions,
 442                 but direction is not specified for this attribute,
 443                 then a single threshold value applies to both directions.
 444                 The raw or input element of the name indicates whether the
 445                 value is in raw device units or in processed units (as _raw
 446                 and _input do on sysfs direct channel read attributes).
 447
 448 What:           /sys/.../deviceX:eventY/accel_x_thresh_rising_period
 449 What:           /sys/.../deviceX:eventY/accel_x_thresh_falling_period
 450 hat:            /sys/.../deviceX:eventY/accel_x_roc_rising_period
 451 What:           /sys/.../deviceX:eventY/accel_x_roc_falling_period
 452 What:           /sys/.../deviceX:eventY/accel_y_thresh_rising_period
 453 What:           /sys/.../deviceX:eventY/accel_y_thresh_falling_period
 454 What:           /sys/.../deviceX:eventY/accel_y_roc_rising_period
 455 What:           /sys/.../deviceX:eventY/accel_y_roc_falling_period
 456 What:           /sys/.../deviceX:eventY/accel_z_thresh_rising_period
 457 What:           /sys/.../deviceX:eventY/accel_z_thresh_falling_period
 458 What:           /sys/.../deviceX:eventY/accel_z_roc_rising_period
 459 What:           /sys/.../deviceX:eventY/accel_z_roc_falling_period
 460 What:           /sys/.../deviceX:eventY/gyro_x_thresh_rising_period
 461 What:           /sys/.../deviceX:eventY/gyro_x_thresh_falling_period
 462 What:           /sys/.../deviceX:eventY/gyro_x_roc_rising_period
 463 What:           /sys/.../deviceX:eventY/gyro_x_roc_falling_period
 464 What:           /sys/.../deviceX:eventY/gyro_y_thresh_rising_period
 465 What:           /sys/.../deviceX:eventY/gyro_y_thresh_falling_period
 466 What:           /sys/.../deviceX:eventY/gyro_y_roc_rising_period
 467 What:           /sys/.../deviceX:eventY/gyro_y_roc_falling_period
 468 What:           /sys/.../deviceX:eventY/gyro_z_thresh_rising_period
 469 What:           /sys/.../deviceX:eventY/gyro_z_thresh_falling_period
 470 What:           /sys/.../deviceX:eventY/gyro_z_roc_rising_period
 471 What:           /sys/.../deviceX:eventY/gyro_z_roc_falling_period
 472 What:           /sys/.../deviceX:eventY/magn_x_thresh_rising_period
 473 What:           /sys/.../deviceX:eventY/magn_x_thresh_falling_period
 474 What:           /sys/.../deviceX:eventY/magn_x_roc_rising_period
 475 What:           /sys/.../deviceX:eventY/magn_x_roc_falling_period
 476 What:           /sys/.../deviceX:eventY/magn_y_thresh_rising_period
 477 What:           /sys/.../deviceX:eventY/magn_y_thresh_falling_period
 478 What:           /sys/.../deviceX:eventY/magn_y_roc_rising_period
 479 What:           /sys/.../deviceX:eventY/magn_y_roc_falling_period
 480 What:           /sys/.../deviceX:eventY/magn_z_thresh_rising_period
 481 What:           /sys/.../deviceX:eventY/magn_z_thresh_falling_period
 482 What:           /sys/.../deviceX:eventY/magn_z_roc_rising_period
 483 What:           /sys/.../deviceX:eventY/magn_z_roc_falling_period
 484 What:           /sys/.../deviceX:eventY/inZ_supply_thresh_rising_period
 485 What:           /sys/.../deviceX:eventY/inZ_supply_thresh_falling_period
 486 What:           /sys/.../deviceX:eventY/inz_supply_roc_rising_period
 487 What:           /sys/.../deviceX:eventY/inZ_supply_roc_falling_period
 488 What:           /sys/.../deviceX:eventY/inZ_thresh_rising_period
 489 What:           /sys/.../deviceX:eventY/inZ_thresh_falling_period
 490 What:           /sys/.../deviceX:eventY/inZ_roc_rising_period
 491 What:           /sys/.../deviceX:eventY/inZ_roc_falling_period
 492 What:           /sys/.../deviceX:eventY/temp_thresh_rising_period
 493 What:           /sys/.../deviceX:eventY/temp_thresh_falling_period
 494 What:           /sys/.../deviceX:eventY/temp_roc_rising_period
 495 What:           /sys/.../deviceX:eventY/temp_roc_falling_period
 496 What:           /sys/.../deviceX:eventY/accel_x&y&z_mag_falling_period
 497 KernelVersion:  2.6.37
 498 Contact:        linux-iio@vger.kernel.org
 499 Description:
 500                 Period of time (in seconds) for which the condition must be
 501                 met before an event is generated. If direction is not
 502                 specified then this period applies to both directions.
 503
 504 What:           /sys/.../deviceX:eventY/accel_mag_en
 505 What:           /sys/.../deviceX:eventY/accel_mag_rising_en
 506 What:           /sys/.../deviceX:eventY/accel_mag_falling_en
 507 What:           /sys/.../deviceX:eventY/accel_x_mag_en
 508 What:           /sys/.../deviceX:eventY/accel_x_mag_rising_en
 509 What:           /sys/.../deviceX:eventY/accel_x_mag_falling_en
 510 What:           /sys/.../deviceX:eventY/accel_y_mag_en
 511 What:           /sys/.../deviceX:eventY/accel_y_mag_rising_en
 512 What:           /sys/.../deviceX:eventY/accel_y_mag_falling_en
 513 What:           /sys/.../deviceX:eventY/accel_z_mag_en
 514 What:           /sys/.../deviceX:eventY/accel_z_mag_rising_en
 515 What:           /sys/.../deviceX:eventY/accel_z_mag_falling_en
 516 What:           /sys/.../deviceX:eventY/accel_x&y&z_mag_rising_en
 517 What:           /sys/.../deviceX:eventY/accel_x&y&z_mag_falling_en
 518 KernelVersion:  2.6.37
 519 Contact:        linux-iio@vger.kernel.org
 520 Description:
 521                 Similar to accel_x_thresh[_rising|_falling]_en, but here the
 522                 magnitude of the channel is compared to the threshold, not its
 523                 signed value.
 524
 525 What:           /sys/.../accel_raw_mag_value
 526 What:           /sys/.../accel_x_raw_mag_rising_value
 527 What:           /sys/.../accel_y_raw_mag_rising_value
 528 What:           /sys/.../accel_z_raw_mag_rising_value
 529 KernelVersion:  2.6.37
 530 Contact:        linux-iio@vger.kernel.org
 531 Description:
 532                 The value to which the magnitude of the channel is compared. If
 533                 number or direction is not specified, applies to all channels of
 534                 this type.
 535
 536 What:           /sys/bus/iio/devices/deviceX:buffer:event/dev
 537 KernelVersion:  2.6.35
 538 Contact:        linux-iio@vger.kernel.org
 539 Description:
 540                 Buffer for device X event character device major:minor numbers.
 541
 542 What:           /sys/bus/iio/devices/deviceX:buffer:access/dev
 543 KernelVersion:  2.6.35
 544 Contact:        linux-iio@vger.kernel.org
 545 Description:
 546                 Buffer for device X access character device major:minor numbers.
 547
 548 What:           /sys/bus/iio/devices/deviceX:buffer/trigger
 549 KernelVersion:  2.6.35
 550 Contact:        linux-iio@vger.kernel.org
 551 Description:
 552                 The name of the trigger source being used, as per string given
 553                 in /sys/class/iio/triggerY/name.
 554
 555 What:           /sys/bus/iio/devices/deviceX:buffer/length
 556 KernelVersion:  2.6.35
 557 Contact:        linux-iio@vger.kernel.org
 558 Description:
 559                 Number of scans contained by the buffer.
 560
 561 What:           /sys/bus/iio/devices/deviceX:buffer/bytes_per_datum
 562 KernelVersion:  2.6.37
 563 Contact:        linux-iio@vger.kernel.org
 564 Description:
 565                 Bytes per scan.  Due to alignment fun, the scan may be larger
 566                 than implied directly by the scan_element parameters.
 567
 568 What:           /sys/bus/iio/devices/deviceX:buffer/enable
 569 KernelVersion:  2.6.35
 570 Contact:        linux-iio@vger.kernel.org
 571 Description:
 572                 Actually start the buffer capture up.  Will start trigger
 573                 if first device and appropriate.
 574
 575 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements
 576 KernelVersion:  2.6.37
 577 Contact:        linux-iio@vger.kernel.org
 578 Description:
 579                 Directory containing interfaces for elements that will be
 580                 captured for a single triggered sample set in the buffer.
 581
 582 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_x_en
 583 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_y_en
 584 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_z_en
 585 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_x_en
 586 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_y_en
 587 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_z_en
 588 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_x_en
 589 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_y_en
 590 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_z_en
 591 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/timestamp_en
 592 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/inY_supply_en
 593 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/inY_en
 594 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/inY-inZ_en
 595 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/incli_x_en
 596 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/incli_y_en
 597 KernelVersion:  2.6.37
 598 Contact:        linux-iio@vger.kernel.org
 599 Description:
 600                 Scan element control for triggered data capture.
 601
 602 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_type
 603 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_type
 604 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_type
 605 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/incli_type
 606 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/inY_type
 607 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/in-in_type
 608 What:           /sys/.../deviceX:buffer/scan_elements/inY_supply_type
 609 What:           /sys/.../deviceX:buffer/scan_elements/timestamp_type
 610 KernelVersion:  2.6.37
 611 Contact:        linux-iio@vger.kernel.org
 612 Description:
 613                 Description of the scan element data storage within the buffer
 614                 and hence the form in which it is read from user-space.
 615                 Form is [s|u]bits/storagebits[>>shift].  s or u specifies if
 616                 signed (2's complement) or unsigned. bits is the number of bits
 617                 of data and storagebits is the space (after padding) that it
 618                 occupies in the buffer. shift if specified, is the shift that
 619                 needs to be applied prior to masking out unused bits. Some
 620                 devices put their data in the middle of the transferred elements
 621                 with additional information on both sides.  Note that some
 622                 devices will have additional information in the unused bits
 623                 so to get a clean value, the bits value must be used to mask
 624                 the buffer output value appropriately.  The storagebits value
 625                 also specifies the data alignment.  So s48/64>>2 will be a
 626                 signed 48 bit integer stored in a 64 bit location aligned to
 627                 a a64 bit boundary. To obtain the clean value, shift right 2
 628                 and apply a mask to zero the top 16 bits of the result.
 629                 For other storage combinations this attribute will be extended
 630                 appropriately.
 631
 632 What:           /sys/.../deviceX:buffer/scan_elements/accel_type_available
 633 KernelVersion:  2.6.37
 634 Contact:        linux-iio@vger.kernel.org
 635 Description:
 636                 If the type parameter can take one of a small set of values,
 637                 this attribute lists them.
 638
 639 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/inY_index
 640 What:           /sys/.../deviceX:buffer/scan_elements/inY_supply_index
 641 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_x_index
 642 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_y_index
 643 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/accel_z_index
 644 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_x_index
 645 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_y_index
 646 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/gyro_z_index
 647 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_x_index
 648 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_y_index
 649 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/magn_z_index
 650 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/incli_x_index
 651 What:           /sys/bus/iio/devices/deviceX:buffer/scan_elements/incli_y_index
 652 What:           /sys/.../deviceX:buffer/scan_elements/timestamp_index
 653 KernelVersion:  2.6.37
 654 Contact:        linux-iio@vger.kernel.org
 655 Description:
 656                 A single positive integer specifying the position of this
 657                 scan element in the buffer. Note these are not dependent on
 658                 what is enabled and may not be contiguous. Thus for user-space
 659                 to establish the full layout these must be used in conjunction
 660                 with all _en attributes to establish which channels are present,
 661                 and the relevant _type attributes to establish the data storage
 662                 format.