linux/drivers/mux/Kconfig
Krzysztof Kozlowski 9fe58ecd1e mux: mmio: Fix missing CONFIG_REGMAP_MMIO
MMIO mux uses now regmap_init_mmio(), so one way or another
CONFIG_REGMAP_MMIO should be enabled, because there are no stubs for
!REGMAP_MMIO case:

  ERROR: modpost: "__regmap_init_mmio_clk" [drivers/mux/mux-mmio.ko] undefined!

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505150312.dYbBqUhG-lkp@intel.com/
Fixes: 61de83fd82 ("mux: mmio: Do not use syscon helper to build regmap")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250521152354.92720-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250616093841.31985-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-04 16:27:08 +02:00

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# SPDX-License-Identifier: GPL-2.0
#
# Multiplexer devices
#
config MULTIPLEXER
tristate
menu "Multiplexer drivers"
depends on MULTIPLEXER
config MUX_ADG792A
tristate "Analog Devices ADG792A/ADG792G Multiplexers"
depends on I2C
help
ADG792A and ADG792G Wide Bandwidth Triple 4:1 Multiplexers
The driver supports both operating the three multiplexers in
parallel and operating them independently.
To compile the driver as a module, choose M here: the module will
be called mux-adg792a.
config MUX_ADGS1408
tristate "Analog Devices ADGS1408/ADGS1409 Multiplexers"
depends on SPI
help
ADGS1408 8:1 multiplexer and ADGS1409 double 4:1 multiplexer
switches.
To compile the driver as a module, choose M here: the module will
be called mux-adgs1408.
config MUX_GPIO
tristate "GPIO-controlled Multiplexer"
depends on GPIOLIB || COMPILE_TEST
help
GPIO-controlled Multiplexer controller.
The driver builds a single multiplexer controller using a number
of gpio pins. For N pins, there will be 2^N possible multiplexer
states. The GPIO pins can be connected (by the hardware) to several
multiplexers, which in that case will be operated in parallel.
To compile the driver as a module, choose M here: the module will
be called mux-gpio.
config MUX_MMIO
tristate "MMIO/Regmap register bitfield-controlled Multiplexer"
depends on OF
select REGMAP_MMIO
help
MMIO/Regmap register bitfield-controlled Multiplexer controller.
The driver builds multiplexer controllers for bitfields in either
a syscon register or a driver regmap 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.
endmenu