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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,5 @@ | ||
| What: /proc/sys/vm/nr_pdflush_threads | ||
| Date: June 2012 | ||
| Contact: Wanpeng Li <[email protected]> | ||
| Description: Since pdflush is replaced by per-BDI flusher, the interface of old pdflush | ||
| exported in /proc/sys/vm/ should be removed. |
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|
@@ -39,6 +39,17 @@ Users: udev rules to set ownership and access permissions or ACLs of | |
| /dev/fw[0-9]+ character device files | ||
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| What: /sys/bus/firewire/devices/fw[0-9]+/is_local | ||
| Date: July 2012 | ||
| KernelVersion: 3.6 | ||
| Contact: [email protected] | ||
| Description: | ||
| IEEE 1394 node device attribute. | ||
| Read-only and immutable. | ||
| Values: 1: The sysfs entry represents a local node (a controller card). | ||
| 0: The sysfs entry represents a remote node. | ||
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| What: /sys/bus/firewire/devices/fw[0-9]+[.][0-9]+/ | ||
| Date: May 2007 | ||
| KernelVersion: 2.6.22 | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| What: /sys/bus/w1/devices/.../pio | ||
| Date: May 2012 | ||
| Contact: Markus Franke <[email protected]> | ||
| Description: read/write the contents of the two PIO's of the DS28E04-100 | ||
| see Documentation/w1/slaves/w1_ds28e04 for detailed information | ||
| Users: any user space application which wants to communicate with DS28E04-100 | ||
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| What: /sys/bus/w1/devices/.../eeprom | ||
| Date: May 2012 | ||
| Contact: Markus Franke <[email protected]> | ||
| Description: read/write the contents of the EEPROM memory of the DS28E04-100 | ||
| see Documentation/w1/slaves/w1_ds28e04 for detailed information | ||
| Users: any user space application which wants to communicate with DS28E04-100 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -40,9 +40,9 @@ Contact: [email protected] | |
| Description: | ||
| Some devices have internal clocks. This parameter sets the | ||
| resulting sampling frequency. In many devices this | ||
| parameter has an effect on input filters etc rather than | ||
| parameter has an effect on input filters etc. rather than | ||
| simply controlling when the input is sampled. As this | ||
| effects datardy triggers, hardware buffers and the sysfs | ||
| effects data ready triggers, hardware buffers and the sysfs | ||
| direct access interfaces, it may be found in any of the | ||
| relevant directories. If it effects all of the above | ||
| then it is to be found in the base device directory. | ||
|
|
@@ -74,7 +74,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw | |
| KernelVersion: 2.6.35 | ||
| Contact: [email protected] | ||
| Description: | ||
| Raw (unscaled no bias removal etc) voltage measurement from | ||
| Raw (unscaled no bias removal etc.) voltage measurement from | ||
| channel Y. In special cases where the channel does not | ||
| correspond to externally available input one of the named | ||
| versions may be used. The number must always be specified and | ||
|
|
@@ -118,11 +118,11 @@ What: /sys/bus/iio/devices/iio:deviceX/in_temp_z_raw | |
| KernelVersion: 2.6.35 | ||
| Contact: [email protected] | ||
| Description: | ||
| Raw (unscaled no bias removal etc) temperature measurement. | ||
| Raw (unscaled no bias removal etc.) temperature measurement. | ||
| If an axis is specified it generally means that the temperature | ||
| sensor is associated with one part of a compound device (e.g. | ||
| a gyroscope axis). Units after application of scale and offset | ||
| are milli degrees Celsuis. | ||
| are milli degrees Celsius. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input | ||
| KernelVersion: 2.6.38 | ||
|
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@@ -148,10 +148,9 @@ KernelVersion: 2.6.35 | |
| Contact: [email protected] | ||
| Description: | ||
| Angular velocity about axis x, y or z (may be arbitrarily | ||
| assigned) Data converted by application of offset then scale to | ||
| radians per second. Has all the equivalent parameters as | ||
| per voltageY. Units after application of scale and offset are | ||
| radians per second. | ||
| assigned). Has all the equivalent parameters as per voltageY. | ||
| Units after application of scale and offset are radians per | ||
| second. | ||
|
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||
| What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw | ||
| What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw | ||
|
|
@@ -161,7 +160,7 @@ Contact: [email protected] | |
| Description: | ||
| Inclination raw reading about axis x, y or z (may be | ||
| arbitrarily assigned). Data converted by application of offset | ||
| and scale to Degrees. | ||
| and scale to degrees. | ||
|
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||
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw | ||
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw | ||
|
|
@@ -203,7 +202,7 @@ Contact: [email protected] | |
| Description: | ||
| If known for a device, offset to be added to <type>[Y]_raw prior | ||
| to scaling by <type>[Y]_scale in order to obtain value in the | ||
| <type> units as specified in <type>[y]_raw documentation. | ||
| <type> units as specified in <type>[Y]_raw documentation. | ||
| Not present if the offset is always 0 or unknown. If Y or | ||
| axis <x|y|z> is not present, then the offset applies to all | ||
| in channels of <type>. | ||
|
|
@@ -249,7 +248,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias | |
| KernelVersion: 2.6.35 | ||
| Contact: [email protected] | ||
| Description: | ||
| Hardware applied calibration offset. (assumed to fix production | ||
| Hardware applied calibration offset (assumed to fix production | ||
| inaccuracies). | ||
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| What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale | ||
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@@ -266,7 +265,7 @@ what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale | |
| KernelVersion: 2.6.35 | ||
| Contact: [email protected] | ||
| Description: | ||
| Hardware applied calibration scale factor. (assumed to fix | ||
| Hardware applied calibration scale factor (assumed to fix | ||
| production inaccuracies). If shared across all channels, | ||
| <type>_calibscale is used. | ||
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@@ -276,10 +275,10 @@ What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available | |
| What: /sys/.../iio:deviceX/out_voltageX_scale_available | ||
| What: /sys/.../iio:deviceX/out_altvoltageX_scale_available | ||
| What: /sys/.../iio:deviceX/in_capacitance_scale_available | ||
| KernelVersion: 2.635 | ||
| KernelVersion: 2.6.35 | ||
| Contact: [email protected] | ||
| Description: | ||
| If a discrete set of scale values are available, they | ||
| If a discrete set of scale values is available, they | ||
| are listed in this attribute. | ||
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| What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain | ||
|
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@@ -330,9 +329,11 @@ Contact: [email protected] | |
| Description: | ||
| Specifies the output powerdown mode. | ||
| DAC output stage is disconnected from the amplifier and | ||
| 1kohm_to_gnd: connected to ground via an 1kOhm resistor | ||
| 100kohm_to_gnd: connected to ground via an 100kOhm resistor | ||
| three_state: left floating | ||
| 1kohm_to_gnd: connected to ground via an 1kOhm resistor, | ||
| 6kohm_to_gnd: connected to ground via a 6kOhm resistor, | ||
| 20kohm_to_gnd: connected to ground via a 20kOhm resistor, | ||
| 100kohm_to_gnd: connected to ground via an 100kOhm resistor, | ||
| three_state: left floating. | ||
| For a list of available output power down options read | ||
| outX_powerdown_mode_available. If Y is not present the | ||
| mode is shared across all outputs. | ||
|
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@@ -355,9 +356,10 @@ KernelVersion: 2.6.38 | |
| Contact: [email protected] | ||
| Description: | ||
| Writing 1 causes output Y to enter the power down mode specified | ||
| by the corresponding outY_powerdown_mode. Clearing returns to | ||
| normal operation. Y may be suppressed if all outputs are | ||
| controlled together. | ||
| by the corresponding outY_powerdown_mode. DAC output stage is | ||
| disconnected from the amplifier. Clearing returns to normal | ||
| operation. Y may be suppressed if all outputs are controlled | ||
| together. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency | ||
| KernelVersion: 3.4.0 | ||
|
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@@ -421,12 +423,12 @@ Description: | |
| different values, but the device can only enable both thresholds | ||
| or neither. | ||
| Note the driver will assume the last p events requested are | ||
| to be enabled where p is however many it supports (which may | ||
| vary depending on the exact set requested. So if you want to be | ||
| to be enabled where p is how many it supports (which may vary | ||
| depending on the exact set requested. So if you want to be | ||
| sure you have set what you think you have, check the contents of | ||
| these attributes after everything is configured. Drivers may | ||
| have to buffer any parameters so that they are consistent when | ||
| a given event type is enabled a future point (and not those for | ||
| a given event type is enabled at a future point (and not those for | ||
| whatever event was previously enabled). | ||
|
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| What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en | ||
|
|
@@ -702,7 +704,7 @@ What: /sys/.../buffer/scan_elements/in_anglvel_type | |
| What: /sys/.../buffer/scan_elements/in_magn_type | ||
| What: /sys/.../buffer/scan_elements/in_incli_type | ||
| What: /sys/.../buffer/scan_elements/in_voltageY_type | ||
| What: /sys/.../buffer/scan_elements/in_voltage-in_type | ||
| What: /sys/.../buffer/scan_elements/in_voltage_type | ||
| What: /sys/.../buffer/scan_elements/in_voltageY_supply_type | ||
| What: /sys/.../buffer/scan_elements/in_timestamp_type | ||
| KernelVersion: 2.6.37 | ||
|
|
@@ -723,7 +725,7 @@ Description: | |
| the buffer output value appropriately. The storagebits value | ||
| also specifies the data alignment. So s48/64>>2 will be a | ||
| signed 48 bit integer stored in a 64 bit location aligned to | ||
| a a64 bit boundary. To obtain the clean value, shift right 2 | ||
| a 64 bit boundary. To obtain the clean value, shift right 2 | ||
| and apply a mask to zero the top 16 bits of the result. | ||
| For other storage combinations this attribute will be extended | ||
| appropriately. | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| What: /sys/bus/iio/devices/iio:deviceX/pll2_feedback_clk_present | ||
| What: /sys/bus/iio/devices/iio:deviceX/pll2_reference_clk_present | ||
| What: /sys/bus/iio/devices/iio:deviceX/pll1_reference_clk_a_present | ||
| What: /sys/bus/iio/devices/iio:deviceX/pll1_reference_clk_b_present | ||
| What: /sys/bus/iio/devices/iio:deviceX/pll1_reference_clk_test_present | ||
| What: /sys/bus/iio/devices/iio:deviceX/vcxo_clk_present | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Reading returns either '1' or '0'. | ||
| '1' means that the clock in question is present. | ||
| '0' means that the clock is missing. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/pllY_locked | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Reading returns either '1' or '0'. '1' means that the | ||
| pllY is locked. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/store_eeprom | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Writing '1' stores the current device configuration into | ||
| on-chip EEPROM. After power-up or chip reset the device will | ||
| automatically load the saved configuration. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/sync_dividers | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Writing '1' triggers the clock distribution synchronization | ||
| functionality. All dividers are reset and the channels start | ||
| with their predefined phase offsets (out_altvoltageY_phase). | ||
| Writing this file has the effect as driving the external | ||
| /SYNC pin low. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_resolution | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Stores channel Y frequency resolution/channel spacing in Hz. | ||
| The value given directly influences the MODULUS used by | ||
| the fractional-N PLL. It is assumed that the algorithm | ||
| that is used to compute the various dividers, is able to | ||
| generate proper values for multiples of channel spacing. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_refin_frequency | ||
| KernelVersion: 3.4.0 | ||
| Contact: [email protected] | ||
| Description: | ||
| Sets channel Y REFin frequency in Hz. In some clock chained | ||
| applications, the reference frequency used by the PLL may | ||
| change during runtime. This attribute allows the user to | ||
| adjust the reference frequency accordingly. | ||
| The value written has no effect until out_altvoltageY_frequency | ||
| is updated. Consider to use out_altvoltageY_powerdown to power | ||
| down the PLL and it's RFOut buffers during REFin changes. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,61 @@ | ||
| What: /sys/.../events/in_illuminance0_thresh_either_en | ||
| Date: April 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Event generated when channel passes one of the four thresholds | ||
| in each direction (rising|falling) and a zone change occurs. | ||
| The corresponding light zone can be read from | ||
| in_illuminance0_zone. | ||
|
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| What: /sys/.../events/in_illuminance0_threshY_hysteresis | ||
| Date: May 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Get the hysteresis for thresholds Y, that is, | ||
| threshY_hysteresis = threshY_raising - threshY_falling | ||
|
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| What: /sys/.../events/illuminance_threshY_falling_value | ||
| What: /sys/.../events/illuminance_threshY_raising_value | ||
| Date: April 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Specifies the value of threshold that the device is comparing | ||
| against for the events enabled by | ||
| in_illuminance0_thresh_either_en (0..255), where Y in 0..3. | ||
|
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| Note that threshY_falling must be less than or equal to | ||
| threshY_raising. | ||
|
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| These thresholds correspond to the eight zone-boundary | ||
| registers (boundaryY_{low,high}) and define the five light | ||
| zones. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_zone | ||
| Date: April 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Get the current light zone (0..4) as defined by the | ||
| in_illuminance0_threshY_{falling,rising} thresholds. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw | ||
| Date: May 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Get output current for channel Y (0..255), that is, | ||
| out_currentY_currentZ_raw, where Z is the current zone. | ||
|
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| What: /sys/bus/iio/devices/iio:deviceX/out_currentY_currentZ_raw | ||
| Date: May 2012 | ||
| KernelVersion: 3.5 | ||
| Contact: Johan Hovold <[email protected]> | ||
| Description: | ||
| Set the output current for channel out_currentY when in zone | ||
| Z (0..255), where Y in 0..2 and Z in 0..4. | ||
|
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||
| These values correspond to the ALS-mapper target registers for | ||
| ALS-mapper Y + 1. |
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