Commit 7ba9df54 authored by Peter Rosin's avatar Peter Rosin Committed by Greg Kroah-Hartman

iio: multiplexer: new iio category and iio-mux driver

When a multiplexer changes how an iio device behaves (for example
by feeding different signals to an ADC), this driver can be used
to create one virtual iio channel for each multiplexer state.

Depends on the generic multiplexer subsystem.

Cache any ext_info values from the parent iio channel, creating a private
copy of the ext_info attributes for each multiplexer state/channel.
Reviewed-by: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarPeter Rosin <peda@axentia.se>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a36954f5
......@@ -6486,6 +6486,7 @@ M: Peter Rosin <peda@axentia.se>
L: linux-iio@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt
F: drivers/iio/multiplexer/iio-mux.c
IIO SUBSYSTEM AND DRIVERS
M: Jonathan Cameron <jic23@kernel.org>
......
......@@ -83,6 +83,7 @@ source "drivers/iio/humidity/Kconfig"
source "drivers/iio/imu/Kconfig"
source "drivers/iio/light/Kconfig"
source "drivers/iio/magnetometer/Kconfig"
source "drivers/iio/multiplexer/Kconfig"
source "drivers/iio/orientation/Kconfig"
if IIO_TRIGGER
source "drivers/iio/trigger/Kconfig"
......
......@@ -28,6 +28,7 @@ obj-y += humidity/
obj-y += imu/
obj-y += light/
obj-y += magnetometer/
obj-y += multiplexer/
obj-y += orientation/
obj-y += potentiometer/
obj-y += potentiostat/
......
#
# Multiplexer drivers
#
# When adding new entries keep the list in alphabetical order
menu "Multiplexers"
config IIO_MUX
tristate "IIO multiplexer driver"
select MULTIPLEXER
depends on OF || COMPILE_TEST
help
Say yes here to build support for the IIO multiplexer.
To compile this driver as a module, choose M here: the
module will be called iio-mux.
endmenu
#
# Makefile for industrial I/O multiplexer drivers
#
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_IIO_MUX) += iio-mux.o
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