tree d63f45915cf6dba885442cf381128bd72a781af3
parent 5fc31545c979bc345c2016852bc1597b9272daec
author Nico Huber <nico.h@gmx.de> 1705271980 +0100
committer Nico Huber <nico.h@gmx.de> 1721642927 +0000

linux_gpio2_spi: Implement multi i/o

Implement the optional bitbang_spi calls for multi-i/o. With the new
libgpiod API, this is straight forward.

By default, we enable dual-i/o mode. We add the optional `io2' and `io3'
parameters, which can be used to specify additional GPIO numbers for
quad-i/o.

Change-Id: I6113a8327c08a3d55fbc0c8ffba2d1a47925de34
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/flashprog/+/84
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>