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authorStephan Gerhold <stephan@gerhold.net>2021-06-01 21:26:34 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2021-06-01 21:35:24 -0700
commitdf4c40f484191362976f46f655c88d4ea0b6d51f (patch)
treee91b6f57c6b24dc6695cb32436b87bc8192869ec /LICENSES
parent77191c8d6ccf2ef6d09a1a931419bd0595d046a1 (diff)
downloadlinux-df4c40f484191362976f46f655c88d4ea0b6d51f.tar.bz2
Input: edt-ft5x06 - add support for iovcc-supply
At the moment, the edt-ft5x06 driver can control a single regulator ("vcc"). However, some FocalTech touch controllers have an additional IOVCC pin that should be supplied with the digital I/O voltage. The I/O voltage might be provided by another regulator that should also be kept on. Otherwise, the touchscreen can randomly stop functioning if the regulator is turned off because no other components still require it. Implement (optional) support for also enabling an "iovcc-supply". The datasheet specifies a delay of ~ 10us before enabling VDD/VCC after IOVCC is enabled, so make sure to enable IOVCC first. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210510193108.50178-2-stephan@gerhold.net Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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