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Input: mpr121 - add polling mode

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In case the interrupt line is not available, polling can be used
to read out the state of the keys. Period of the polling needs to
be configured by the poll-interval DT property.

Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Michal Vokáč
2019-10-15 17:17:29 -07:00
committed by Dmitry Torokhov
parent def10ec799
commit ee358cb459
3 changed files with 79 additions and 19 deletions
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4
Documentation/devicetree/bindings/input/input.yaml
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@@ -24,6 +24,10 @@ properties:
minimum: 0
maximum: 0xff
poll-interval:
description: Poll interval time in milliseconds.
$ref: /schemas/types.yaml#/definitions/uint32
power-off-time-sec:
description:
Duration in seconds which the key should be kept pressed for device to