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mux: mmio-based syscon mux controller

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This adds a driver for mmio-based syscon multiplexers controlled by
bitfields in a syscon register range.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Philipp Zabel
2017-05-14 21:51:16 +02:00
committed by Greg Kroah-Hartman
parent 5dc75a2d93
commit 73726380a2
3 changed files with 155 additions and 0 deletions
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13
drivers/mux/Kconfig
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@@ -43,4 +43,17 @@ config MUX_GPIO
To compile the driver as a module, choose M here: the module will
be called mux-gpio.
config MUX_MMIO
tristate "MMIO register bitfield-controlled Multiplexer"
depends on (OF && MFD_SYSCON) || COMPILE_TEST
help
MMIO register bitfield-controlled Multiplexer controller.
The driver builds multiplexer controllers for bitfields in a syscon
register. For N bit wide bitfields, there will be 2^N possible
multiplexer states.
To compile the driver as a module, choose M here: the module will
be called mux-mmio.
endif