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zephyr/drivers/gpio/Kconfig.pca95xx

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drivers: gpio: rename PCAL9535A to PCA95XX PCA95XX is a series of compatible I2C-based GPIO expanders, with common registers on input/output, polarity and configuration. This renames the original PCAL9535A driver to PCA95XX to indicate that it can support this series. Additional features on variants are guarded by kconfigs. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2019-11-01 05:45:11 +08:00
# PCA95XX GPIO configuration options
# Copyright (c) 2016 Intel Corporation
# SPDX-License-Identifier: Apache-2.0
menuconfig GPIO_PCA95XX
bool "PCA95XX I2C-based GPIO chip"
depends on I2C
help
Enable driver for PCA95XX I2C-based GPIO chip.
config GPIO_PCA95XX_INIT_PRIORITY
int "Init priority"
default 70
kconfig: Replace non-defconfig single-symbol 'if's with 'depends on' Same deal as in commit eddd98f811 ("kconfig: Replace some single-symbol 'if's with 'depends on'"), for the remaining cases outside defconfig files. See that commit for an explanation. Will do the defconfigs separately in case there are any complaints there. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2020-02-10 05:26:07 +08:00
depends on GPIO_PCA95XX
drivers: gpio: rename PCAL9535A to PCA95XX PCA95XX is a series of compatible I2C-based GPIO expanders, with common registers on input/output, polarity and configuration. This renames the original PCAL9535A driver to PCA95XX to indicate that it can support this series. Additional features on variants are guarded by kconfigs. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2019-11-01 05:45:11 +08:00
help
Device driver initialization priority.
drivers: gpio_pca95xx: Add GPIO driver enable interrupt support Allows the use of pin interrupt and callbacks for pca95xx family GPIO expander chips with an interrupt line. Enable config flag and define a gpio pin for the expander interrupt- line (INT) in devicetree and the driver will accept pin interrupt configurations for the expander gpio pins. Level triggering is supported through emulation. A worker is used to avoid waiting for I2C in ISR. Example devicetree node: gpioext0: tca9539@77 { compatible = "nxp,pca95xx"; label = "GPIO_EXT_0"; reg = <0x77>; interrupt-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>; gpio-controller; #gpio-cells = <2>; ngpios = <16>; }; Fixes: #27561 Signed-off-by: Bent Ove Stinessen <bent@norbit.no>
2020-09-11 16:36:14 +08:00
config GPIO_PCA95XX_INTERRUPT
bool "Interrupt enable"
default n
depends on GPIO_PCA95XX
help
Enable interrupt support in PCA95XX driver.
Note that the PCA95XX cannot reliably detect
short-pulse interrupts due to its design.