Input: matrix_keypad - add option to drive inactive columns

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The gpio-matrix-keypad driver normally sets inactive columns as inputs
while scanning. This does not work for all hardware, which may require
the inactive columns to be actively driven in order to overcome any
pull-ups/downs on the columns.

Signed-off-by: David Rivshin <drivshin@allworx.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

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David Rivshin 2017-03-29 00:14:16 -07:00 • committed by Dmitry Torokhov

parent 4896fb1348

commit aa0e26bb78

3 changed files with 14 additions and 4 deletions

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include/linux/input/matrix_keypad.h

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