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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-10-07 13:46:46 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2022-10-26 14:52:01 +0200 |
| commit | 1454a928b637bd169d99fc91a46b3b36cea76f9f (patch) | |
| tree | 24945884cefd8271d6a0cbc9b96b72617eefa029 /drivers/gpio/Kconfig | |
| parent | 2a903ca922d007a0b40ca425ce55b5f0a0e01956 (diff) | |
| download | linux-stable-1454a928b637bd169d99fc91a46b3b36cea76f9f.tar.gz linux-stable-1454a928b637bd169d99fc91a46b3b36cea76f9f.tar.bz2 linux-stable-1454a928b637bd169d99fc91a46b3b36cea76f9f.zip | |
gpio: Add gpio latch driver
This driver implements a GPIO multiplexer based on latches connected to
other GPIOs. A set of data GPIOs is connected to the data input of
multiple latches. The clock input of each latch is driven by another
set of GPIOs. With two 8-bit latches 10 GPIOs can be multiplexed into
16 GPIOs. GPOs might be a better term as in fact the multiplexed pins
are output only.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Bartosz: fixed the strange of_device_id formatting]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 5a04990f03cc..8c756cb29214 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1684,6 +1684,12 @@ config GPIO_AGGREGATOR industrial control context, to be operated from userspace using the GPIO chardev interface. +config GPIO_LATCH + tristate "GPIO latch driver" + help + Say yes here to enable a driver for GPIO multiplexers based on latches + connected to other GPIOs. + config GPIO_MOCKUP tristate "GPIO Testing Driver" select IRQ_SIM |