drivers: gpio: add MAX22017 gpio support

MAX22017 is a DAC with support for 6 GPIOs

Signed-off-by: Guillaume Ranquet <[email protected]>

drivers/gpio/CMakeLists.txt

@@ -42,6 +42,7 @@ zephyr_library_sources_ifdef(CONFIG_GPIO_LMP90XXX   gpio_lmp90xxx.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_LPC11U6X   gpio_lpc11u6x.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_MAX14906   gpio_max14906.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_MAX14916   gpio_max14916.c)
+zephyr_library_sources_ifdef(CONFIG_GPIO_MAX22017   gpio_max22017.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_MAX32      gpio_max32.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_MCHP_MSS       gpio_mchp_mss.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_MCP230XX   gpio_mcp230xx.c)

drivers/gpio/Kconfig

@@ -96,6 +96,7 @@ config GPIO_ENABLE_DISABLE_INTERRUPT
 
 # zephyr-keep-sorted-start
 source "drivers/gpio/Kconfig.ad559x"
+source "drivers/gpio/Kconfig.adi_max22017"
 source "drivers/gpio/Kconfig.adp5585"
 source "drivers/gpio/Kconfig.ads114s0x"
 source "drivers/gpio/Kconfig.altera"

drivers/gpio/Kconfig.adi_max22017

@@ -0,0 +1,33 @@
+# Copyright (c) 2024 Analog Devices Inc.
+# Copyright (c) 2024 BayLibre SAS
+# SPDX-License-Identifier: Apache-2.0
+
+config GPIO_MAX22017
+	bool "Analog Devices MAX22017 GPIO support"
+	default y
+	depends on DT_HAS_ADI_MAX22017_GPIO_ENABLED
+	select MFD
+	help
+	  Enable GPIO support for the Analog Devices MAX22017
+
+if GPIO_MAX22017
+
+config GPIO_MAX22017_INIT_PRIORITY
+	int "Init priority"
+	default 81
+	help
+	  Analog Devices MAX22017 gpio device driver initialization priority.
+
+config GPIO_MAX22017_INT_QUIRK
+	bool "MAX22017 GPIO Interrupt quirk"
+	default n
+	help
+	  The GPIO controller will not report any new GPI interrupt as long as its interrupt status
+	  register hasn't been read.
+	  Reading the interrupt status register happens on a falling edge of the INT pin.
+	  There seems to be a condition when the GPIO controller detects an interrupt but it's INT
+	  pin stays high which masks any subsequent interrupts.
+	  To avoid being stuck in that state, fire a timer to periodically check the interrupt status
+	  register.
+
+endif # GPIO_MAX22017