Npm2100 driver

drivers/gpio/CMakeLists.txt

@@ -59,6 +59,7 @@ zephyr_library_sources_ifdef(CONFIG_GPIO_NCT38XX_ALERT  gpio_nct38xx_alert.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NEORV32    gpio_neorv32.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NPCX       gpio_npcx.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NPM1300    gpio_npm1300.c)
+zephyr_library_sources_ifdef(CONFIG_GPIO_NPM2100    gpio_npm2100.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NPM6001    gpio_npm6001.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NRFX       gpio_nrfx.c)
 zephyr_library_sources_ifdef(CONFIG_GPIO_NUMAKER    gpio_numaker.c)

drivers/gpio/Kconfig

@@ -146,6 +146,7 @@ source "drivers/gpio/Kconfig.nct38xx"
 source "drivers/gpio/Kconfig.neorv32"
 source "drivers/gpio/Kconfig.npcx"
 source "drivers/gpio/Kconfig.npm1300"
+source "drivers/gpio/Kconfig.npm2100"
 source "drivers/gpio/Kconfig.npm6001"
 source "drivers/gpio/Kconfig.nrfx"
 source "drivers/gpio/Kconfig.numaker"

drivers/gpio/Kconfig.npm2100

@@ -0,0 +1,19 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config GPIO_NPM2100
+	bool "nPM2100 GPIO driver"
+	default y
+	depends on DT_HAS_NORDIC_NPM2100_GPIO_ENABLED
+	select I2C
+	select MFD
+	help
+	  Enable the nPM2100 GPIO driver.
+
+config GPIO_NPM2100_INIT_PRIORITY
+	int "nPM2100 GPIO driver initialization priority"
+	depends on GPIO_NPM2100
+	default 80
+	help
+	  Initialization priority for the nPM2100 GPIO driver. It must be
+	  greater than the I2C controller init priority.

drivers/gpio/gpio_npm2100.c

@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define DT_DRV_COMPAT nordic_npm2100_gpio
+
+#include <errno.h>
+
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/gpio/gpio_utils.h>
+#include <zephyr/drivers/i2c.h>
+#include <zephyr/dt-bindings/gpio/nordic-npm2100-gpio.h>
+#include <zephyr/kernel.h>
+#include <zephyr/sys/util_macro.h>
+
+#define NPM2100_GPIO_CONFIG 0x80U
+#define NPM2100_GPIO_USAGE  0x83U
+#define NPM2100_GPIO_OUTPUT 0x86U
+#define NPM2100_GPIO_READ   0x89U
+
+#define NPM2100_GPIO_PINS 2U
+
+#define NPM2100_GPIO_CONFIG_INPUT     0x01U
+#define NPM2100_GPIO_CONFIG_OUTPUT    0x02U
+#define NPM2100_GPIO_CONFIG_OPENDRAIN 0x04U
+#define NPM2100_GPIO_CONFIG_PULLDOWN  0x08U
+#define NPM2100_GPIO_CONFIG_PULLUP    0x10U
+#define NPM2100_GPIO_CONFIG_DRIVE     0x20U
+#define NPM2100_GPIO_CONFIG_DEBOUNCE  0x40U
+
+struct gpio_npm2100_config {
+	struct gpio_driver_config common;
+	struct i2c_dt_spec i2c;
+};
+
+struct gpio_npm2100_data {
+	struct gpio_driver_data common;
+};
+
+static int gpio_npm2100_port_get_raw(const struct device *dev, uint32_t *value)
+{
+	const struct gpio_npm2100_config *config = dev->config;
+	uint8_t data;
+	int ret;
+
+	ret = i2c_reg_read_byte_dt(&config->i2c, NPM2100_GPIO_READ, &data);
+	if (ret < 0) {
+		return ret;
+	}
+
+	*value = data;
+
+	return 0;
+}
+
+static int gpio_npm2100_port_set_masked_raw(const struct device *dev, gpio_port_pins_t mask,
+					    gpio_port_value_t value)
+{
+	const struct gpio_npm2100_config *config = dev->config;
+	int ret = 0;
+
+	for (size_t idx = 0; idx < NPM2100_GPIO_PINS; idx++) {
+		if ((mask & BIT(idx)) != 0U) {
+			i2c_reg_write_byte_dt(&config->i2c, NPM2100_GPIO_OUTPUT + idx,
+					      !!(value & BIT(idx)));
+			if (ret != 0U) {
+				return ret;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static int gpio_npm2100_port_set_bits_raw(const struct device *dev, gpio_port_pins_t pins)
+{
+	return gpio_npm2100_port_set_masked_raw(dev, pins, pins);
+}
+
+static int gpio_npm2100_port_clear_bits_raw(const struct device *dev, gpio_port_pins_t pins)
+{
+	return gpio_npm2100_port_set_masked_raw(dev, pins, 0U);
+}
+
+static inline int gpio_npm2100_configure(const struct device *dev, gpio_pin_t pin,
+					 gpio_flags_t flags)
+{
+	const struct gpio_npm2100_config *config = dev->config;
+	uint8_t reg = 0U;
+
+	if (k_is_in_isr()) {
+		return -EWOULDBLOCK;
+	}
+
+	if (pin >= NPM2100_GPIO_PINS) {
+		return -EINVAL;
+	}
+
+	/* Set initial state if defined */
+	if ((flags & (GPIO_OUTPUT_INIT_LOW | GPIO_OUTPUT_INIT_HIGH)) != 0U) {
+		int ret = i2c_reg_write_byte_dt(&config->i2c, NPM2100_GPIO_OUTPUT + pin,
+						!!(flags & GPIO_OUTPUT_INIT_HIGH));
+		if (ret < 0) {
+			return ret;
+		}
+	}
+
+	/* Set pin configuration */
+	if ((flags & GPIO_INPUT) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_INPUT;
+	}
+	if ((flags & GPIO_OUTPUT) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_OUTPUT;
+	}
+	if ((flags & GPIO_SINGLE_ENDED) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_OPENDRAIN;
+	}
+	if ((flags & GPIO_PULL_UP) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_PULLUP;
+	}
+	if ((flags & GPIO_PULL_DOWN) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_PULLDOWN;
+	}
+	if ((flags & NPM2100_GPIO_DRIVE_HIGH) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_DRIVE;
+	}
+	if ((flags & NPM2100_GPIO_DEBOUNCE_ON) != 0U) {
+		reg |= NPM2100_GPIO_CONFIG_DEBOUNCE;
+	}
+
+	return i2c_reg_write_byte_dt(&config->i2c, NPM2100_GPIO_CONFIG + pin, reg);
+}
+
+static int gpio_npm2100_port_toggle_bits(const struct device *dev, gpio_port_pins_t pins)
+{
+	int ret;
+	uint32_t value;
+
+	ret = gpio_npm2100_port_get_raw(dev, &value);
+	if (ret < 0) {
+		return ret;
+	}
+
+	return gpio_npm2100_port_set_masked_raw(dev, pins, ~value);
+}
+
+static DEVICE_API(gpio, gpio_npm2100_api) = {
+	.pin_configure = gpio_npm2100_configure,
+	.port_get_raw = gpio_npm2100_port_get_raw,
+	.port_set_masked_raw = gpio_npm2100_port_set_masked_raw,
+	.port_set_bits_raw = gpio_npm2100_port_set_bits_raw,
+	.port_clear_bits_raw = gpio_npm2100_port_clear_bits_raw,
+	.port_toggle_bits = gpio_npm2100_port_toggle_bits,
+};
+
+static int gpio_npm2100_init(const struct device *dev)
+{
+	const struct gpio_npm2100_config *config = dev->config;
+
+	if (!i2c_is_ready_dt(&config->i2c)) {
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+#define GPIO_NPM2100_DEFINE(n)                                                                     \
+	static const struct gpio_npm2100_config gpio_npm2100_config##n = {                         \
+		.common =                                                                          \
+			{                                                                          \
+				.port_pin_mask = GPIO_PORT_PIN_MASK_FROM_DT_INST(n),               \
+			},                                                                         \
+		.i2c = I2C_DT_SPEC_GET(DT_INST_PARENT(n))};                                        \
+                                                                                                   \
+	static struct gpio_npm2100_data gpio_npm2100_data##n;                                      \
+                                                                                                   \
+	DEVICE_DT_INST_DEFINE(n, &gpio_npm2100_init, NULL, &gpio_npm2100_data##n,                  \
+			      &gpio_npm2100_config##n, POST_KERNEL,                                \
+			      CONFIG_GPIO_NPM2100_INIT_PRIORITY, &gpio_npm2100_api);
+
+DT_INST_FOREACH_STATUS_OKAY(GPIO_NPM2100_DEFINE)

drivers/mfd/CMakeLists.txt

@@ -7,6 +7,7 @@ zephyr_library_sources_ifdef(CONFIG_MFD_ADP5585 mfd_adp5585.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_MAX20335 mfd_max20335.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_NCT38XX mfd_nct38xx.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_NPM1300 mfd_npm1300.c)
+zephyr_library_sources_ifdef(CONFIG_MFD_NPM2100 mfd_npm2100.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_NPM6001 mfd_npm6001.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_AXP192 mfd_axp192.c)
 zephyr_library_sources_ifdef(CONFIG_MFD_AD559X mfd_ad559x.c)

drivers/mfd/Kconfig

@@ -26,6 +26,7 @@ source "drivers/mfd/Kconfig.max20335"
 source "drivers/mfd/Kconfig.max31790"
 source "drivers/mfd/Kconfig.nct38xx"
 source "drivers/mfd/Kconfig.npm1300"
+source "drivers/mfd/Kconfig.npm2100"
 source "drivers/mfd/Kconfig.npm6001"
 source "drivers/mfd/Kconfig.lpflexcomm"
 source "drivers/mfd/Kconfig.tle9104"

drivers/mfd/Kconfig.npm2100

@@ -0,0 +1,10 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config MFD_NPM2100
+	bool "nPM2100 PMIC multi-function device driver"
+	default y
+	depends on DT_HAS_NORDIC_NPM2100_ENABLED
+	select I2C
+	help
+	  Enable the Nordic nPM2100 PMIC multi-function device driver