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

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

MAINTAINERS

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@@ -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>

drivers/iio/Kconfig

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@@ -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"

drivers/iio/Makefile

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@@ -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/

drivers/iio/multiplexer/Kconfig

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#

# 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

drivers/iio/multiplexer/Makefile

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#

# Makefile for industrial I/O multiplexer drivers

#



# When adding new entries keep the list in alphabetical order

obj-$(CONFIG_IIO_MUX) += iio-mux.o