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iio: gyro: adxrs290: Add triggered buffer support #1131

Merged
merged 5 commits into from
Aug 25, 2020
Merged

iio: gyro: adxrs290: Add triggered buffer support #1131

merged 5 commits into from
Aug 25, 2020

Commits on Aug 21, 2020

  1. iio: gyro: adxrs290: Insert missing mutex initialization call 

    Insert a missing mutex_init() call during the probe that initializes
the driver's local lock to unlocked state.

Fixes: ac98be7 ("iio: gyro: Update ADXRS290 driver for channels support")
Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    @layman-n-ish
    layman-n-ish committed Aug 21, 2020
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  2. iio: gyro: adxrs290: Add triggered buffer support 

    Provide a way for continuous data capture by setting up buffer support. The
data ready signal exposed at the SYNC pin of the ADXRS290 is exploited as
a hardware interrupt which triggers to fill the buffer.

Triggered buffer setup was tested with both hardware trigger (DATA_RDY) and
software triggers (sysfs-trig & hrtimer).

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    @layman-n-ish
    layman-n-ish committed Aug 21, 2020
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  3. arm: dts: overlays: adxrs290: Enable GPIO interrupt line 

    Configure ADXRS290 to use a GPIO interrupt line as a DATA_RDY trigger
signal.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    @layman-n-ish
    layman-n-ish committed Aug 21, 2020
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  4. dt-bindings: iio: gyro: adxrs290: Add required interrupts property 

    Append 'interrupts' as a required property and provide a suitable example
for using a GPIO interrupt line.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    @layman-n-ish
    layman-n-ish committed Aug 21, 2020
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  5. iio: gyro: adxrs290: Add debugfs register access support 

    Extend support to read/write byte data from/to the device using
debugfs iio interface.

Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    @layman-n-ish
    layman-n-ish committed Aug 21, 2020
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