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-rw-r--r--drivers/gpio/Kconfig16
-rw-r--r--drivers/gpio/Makefile2
-rw-r--r--drivers/gpio/gpio-uclass.c20
-rw-r--r--drivers/gpio/max77663_gpio.c178
-rw-r--r--drivers/gpio/palmas_gpio.c132
5 files changed, 348 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index ba42b0768e1..63e62e1acd2 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -238,6 +238,15 @@ config MAX7320_GPIO
original maxim device has 8 push/pull outputs,
some clones offers 16bit.
+config MAX77663_GPIO
+ bool "MAX77663 GPIO cell of PMIC driver"
+ depends on DM_GPIO && DM_PMIC_MAX77663
+ help
+ GPIO driver for MAX77663 PMIC from Maxim Semiconductor.
+ MAX77663 PMIC has 8 pins that can be configured as GPIOs
+ and 3 GPIO-like pins dedicated for power/reset buttons
+ and LID sensor.
+
config MCP230XX_GPIO
bool "MCP230XX GPIO driver"
depends on DM
@@ -426,6 +435,13 @@ config VYBRID_GPIO
help
Say yes here to support Vybrid vf610 GPIOs.
+config PALMAS_GPIO
+ bool "TI PALMAS series PMICs GPIO"
+ depends on DM_GPIO && PMIC_PALMAS
+ help
+ Select this option to enable GPIO driver for the TI PALMAS
+ series chip family.
+
config PIC32_GPIO
bool "Microchip PIC32 GPIO driver"
depends on DM_GPIO && MACH_PIC32
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index c8b3fd78141..da3da5da2b3 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_VYBRID_GPIO) += vybrid_gpio.o
obj-$(CONFIG_HIKEY_GPIO) += hi6220_gpio.o
obj-$(CONFIG_HSDK_CREG_GPIO) += hsdk-creg-gpio.o
obj-$(CONFIG_IMX_RGPIO2P) += imx_rgpio2p.o
+obj-$(CONFIG_$(SPL_)PALMAS_GPIO) += palmas_gpio.o
obj-$(CONFIG_PIC32_GPIO) += pic32_gpio.o
obj-$(CONFIG_OCTEON_GPIO) += octeon_gpio.o
obj-$(CONFIG_MVEBU_GPIO) += mvebu_gpio.o
@@ -68,6 +69,7 @@ obj-$(CONFIG_NX_GPIO) += nx_gpio.o
obj-$(CONFIG_SIFIVE_GPIO) += sifive-gpio.o
obj-$(CONFIG_NOMADIK_GPIO) += nmk_gpio.o
obj-$(CONFIG_MAX7320_GPIO) += max7320_gpio.o
+obj-$(CONFIG_$(SPL_)MAX77663_GPIO) += max77663_gpio.o
obj-$(CONFIG_SL28CPLD_GPIO) += sl28cpld-gpio.o
obj-$(CONFIG_ZYNQMP_GPIO_MODEPIN) += zynqmp_gpio_modepin.o
obj-$(CONFIG_SLG7XL45106_I2C_GPO) += gpio_slg7xl45106.o
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 7aece85a70a..4234cd912c9 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -1143,9 +1143,29 @@ static int gpio_request_tail(int ret, const char *nodename,
ret = uclass_get_device_by_ofnode(UCLASS_GPIO, args->node,
&desc->dev);
if (ret) {
+#if CONFIG_IS_ENABLED(MAX77663_GPIO) || CONFIG_IS_ENABLED(PALMAS_GPIO)
+ struct udevice *pmic;
+ ret = uclass_get_device_by_ofnode(UCLASS_PMIC, args->node,
+ &pmic);
+ if (ret) {
+ log_debug("%s: PMIC device get failed, err %d\n",
+ __func__, ret);
+ goto err;
+ }
+
+ device_foreach_child(desc->dev, pmic) {
+ if (device_get_uclass_id(desc->dev) == UCLASS_GPIO)
+ break;
+ }
+
+ /* if loop exits without GPIO device return error */
+ if (device_get_uclass_id(desc->dev) != UCLASS_GPIO)
+ goto err;
+#else
debug("%s: uclass_get_device_by_ofnode failed\n",
__func__);
goto err;
+#endif
}
}
ret = gpio_find_and_xlate(desc, args);
diff --git a/drivers/gpio/max77663_gpio.c b/drivers/gpio/max77663_gpio.c
new file mode 100644
index 00000000000..ecb60478088
--- /dev/null
+++ b/drivers/gpio/max77663_gpio.c
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <dm.h>
+#include <asm/gpio.h>
+#include <power/max77663.h>
+#include <power/pmic.h>
+
+#define NUM_ENTRIES 11 /* 8 GPIOs + 3 KEYs */
+#define NUM_GPIOS 8
+
+#define MAX77663_CNFG1_GPIO 0x36
+#define GPIO_REG_ADDR(offset) (MAX77663_CNFG1_GPIO + (offset))
+
+#define MAX77663_CNFG_GPIO_DIR_MASK BIT(1)
+#define MAX77663_CNFG_GPIO_DIR_INPUT BIT(1)
+#define MAX77663_CNFG_GPIO_DIR_OUTPUT 0
+#define MAX77663_CNFG_GPIO_INPUT_VAL_MASK BIT(2)
+#define MAX77663_CNFG_GPIO_OUTPUT_VAL_MASK BIT(3)
+#define MAX77663_CNFG_GPIO_OUTPUT_VAL_HIGH BIT(3)
+#define MAX77663_CNFG_GPIO_OUTPUT_VAL_LOW 0
+#define MAX77663_CNFG_IRQ GENMASK(5, 4)
+
+#define MAX77663_ONOFFSTAT_REG 0x15
+#define EN0 BIT(2) /* KEY 2 */
+#define ACOK BIT(1) /* KEY 1 */
+#define LID BIT(0) /* KEY 0 */
+
+static int max77663_gpio_direction_input(struct udevice *dev, unsigned int offset)
+{
+ int ret;
+
+ if (offset >= NUM_GPIOS)
+ return 0;
+
+ ret = pmic_clrsetbits(dev->parent, GPIO_REG_ADDR(offset),
+ MAX77663_CNFG_GPIO_DIR_MASK,
+ MAX77663_CNFG_GPIO_DIR_INPUT);
+ if (ret < 0)
+ log_debug("%s: CNFG_GPIOx dir update failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max77663_gpio_direction_output(struct udevice *dev, unsigned int offset,
+ int value)
+{
+ u8 val;
+ int ret;
+
+ if (offset >= NUM_GPIOS)
+ return -EINVAL;
+
+ val = (value) ? MAX77663_CNFG_GPIO_OUTPUT_VAL_HIGH :
+ MAX77663_CNFG_GPIO_OUTPUT_VAL_LOW;
+
+ ret = pmic_clrsetbits(dev->parent, GPIO_REG_ADDR(offset),
+ MAX77663_CNFG_GPIO_OUTPUT_VAL_MASK, val);
+ if (ret < 0) {
+ log_debug("%s: CNFG_GPIOx val update failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = pmic_clrsetbits(dev->parent, GPIO_REG_ADDR(offset),
+ MAX77663_CNFG_GPIO_DIR_MASK,
+ MAX77663_CNFG_GPIO_DIR_OUTPUT);
+ if (ret < 0)
+ log_debug("%s: CNFG_GPIOx dir update failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max77663_gpio_get_value(struct udevice *dev, unsigned int offset)
+{
+ int ret;
+
+ if (offset >= NUM_GPIOS) {
+ ret = pmic_reg_read(dev->parent, MAX77663_ONOFFSTAT_REG);
+ if (ret < 0) {
+ log_debug("%s: ONOFFSTAT_REG read failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ return !!(ret & BIT(offset - NUM_GPIOS));
+ }
+
+ ret = pmic_reg_read(dev->parent, GPIO_REG_ADDR(offset));
+ if (ret < 0) {
+ log_debug("%s: CNFG_GPIOx read failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ if (ret & MAX77663_CNFG_GPIO_DIR_MASK)
+ return !!(ret & MAX77663_CNFG_GPIO_INPUT_VAL_MASK);
+ else
+ return !!(ret & MAX77663_CNFG_GPIO_OUTPUT_VAL_MASK);
+}
+
+static int max77663_gpio_set_value(struct udevice *dev, unsigned int offset,
+ int value)
+{
+ u8 val;
+ int ret;
+
+ if (offset >= NUM_GPIOS)
+ return -EINVAL;
+
+ val = (value) ? MAX77663_CNFG_GPIO_OUTPUT_VAL_HIGH :
+ MAX77663_CNFG_GPIO_OUTPUT_VAL_LOW;
+
+ ret = pmic_clrsetbits(dev->parent, GPIO_REG_ADDR(offset),
+ MAX77663_CNFG_GPIO_OUTPUT_VAL_MASK, val);
+ if (ret < 0)
+ log_debug("%s: CNFG_GPIO_OUT update failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max77663_gpio_get_function(struct udevice *dev, unsigned int offset)
+{
+ int ret;
+
+ if (offset >= NUM_GPIOS)
+ return GPIOF_INPUT;
+
+ ret = pmic_reg_read(dev->parent, GPIO_REG_ADDR(offset));
+ if (ret < 0) {
+ log_debug("%s: CNFG_GPIOx read failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ if (ret & MAX77663_CNFG_GPIO_DIR_MASK)
+ return GPIOF_INPUT;
+ else
+ return GPIOF_OUTPUT;
+}
+
+static const struct dm_gpio_ops max77663_gpio_ops = {
+ .direction_input = max77663_gpio_direction_input,
+ .direction_output = max77663_gpio_direction_output,
+ .get_value = max77663_gpio_get_value,
+ .set_value = max77663_gpio_set_value,
+ .get_function = max77663_gpio_get_function,
+};
+
+static int max77663_gpio_probe(struct udevice *dev)
+{
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+ int i, ret;
+
+ uc_priv->gpio_count = NUM_ENTRIES;
+ uc_priv->bank_name = "GPIO";
+
+ /*
+ * GPIO interrupts may be left ON after bootloader, hence let's
+ * pre-initialize hardware to the expected state by disabling all
+ * the interrupts.
+ */
+ for (i = 0; i < NUM_GPIOS; i++) {
+ ret = pmic_clrsetbits(dev->parent, GPIO_REG_ADDR(i),
+ MAX77663_CNFG_IRQ, 0);
+ if (ret < 0) {
+ log_debug("%s: failed to disable interrupt: %d\n", __func__, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+U_BOOT_DRIVER(max77663_gpio) = {
+ .name = MAX77663_GPIO_DRIVER,
+ .id = UCLASS_GPIO,
+ .probe = max77663_gpio_probe,
+ .ops = &max77663_gpio_ops,
+};
diff --git a/drivers/gpio/palmas_gpio.c b/drivers/gpio/palmas_gpio.c
new file mode 100644
index 00000000000..15039351dd5
--- /dev/null
+++ b/drivers/gpio/palmas_gpio.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Based on mainline Linux palmas GPIO driver
+ * Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <dm.h>
+#include <i2c.h>
+#include <asm/gpio.h>
+#include <power/palmas.h>
+
+#define NUM_GPIOS 8
+
+static int palmas_gpio_set_value(struct udevice *dev, unsigned int offset,
+ int value)
+{
+ struct palmas_priv *priv = dev_get_priv(dev->parent);
+ u32 reg;
+ int ret;
+
+ reg = (value) ? PALMAS_GPIO_SET_DATA_OUT : PALMAS_GPIO_CLEAR_DATA_OUT;
+
+ ret = dm_i2c_reg_write(priv->chip2, reg, BIT(offset));
+ if (ret < 0)
+ log_debug("%s: Reg 0x%02x write failed, %d\n", __func__, reg, ret);
+
+ return ret;
+}
+
+static int palmas_gpio_get_value(struct udevice *dev, unsigned int offset)
+{
+ struct palmas_priv *priv = dev_get_priv(dev->parent);
+ u32 reg;
+ int ret;
+
+ ret = dm_i2c_reg_read(priv->chip2, PALMAS_GPIO_DATA_DIR);
+ if (ret < 0) {
+ log_debug("%s: GPIO_DATA_DIR read failed, %d\n", __func__, ret);
+ return ret;
+ }
+
+ if (ret & BIT(offset))
+ reg = PALMAS_GPIO_DATA_OUT;
+ else
+ reg = PALMAS_GPIO_DATA_IN;
+
+ ret = dm_i2c_reg_read(priv->chip2, reg);
+ if (ret < 0) {
+ log_debug("%s: Reg 0x%02x read failed, %d\n", __func__, reg, ret);
+ return ret;
+ }
+
+ return !!(ret & BIT(offset));
+}
+
+static int palmas_gpio_direction_input(struct udevice *dev, unsigned int offset)
+{
+ struct palmas_priv *priv = dev_get_priv(dev->parent);
+ int ret;
+
+ ret = dm_i2c_reg_clrset(priv->chip2, PALMAS_GPIO_DATA_DIR,
+ BIT(offset), 0);
+ if (ret < 0)
+ log_debug("%s: GPIO_DATA_DIR val update failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int palmas_gpio_direction_output(struct udevice *dev, unsigned int offset,
+ int value)
+{
+ struct palmas_priv *priv = dev_get_priv(dev->parent);
+ int ret;
+
+ /* Set the initial value */
+ palmas_gpio_set_value(dev, offset, value);
+
+ ret = dm_i2c_reg_clrset(priv->chip2, PALMAS_GPIO_DATA_DIR,
+ BIT(offset), BIT(offset));
+ if (ret < 0)
+ log_debug("%s: GPIO_DATA_DIR val update failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int palmas_gpio_get_function(struct udevice *dev, unsigned int offset)
+{
+ struct palmas_priv *priv = dev_get_priv(dev->parent);
+ int ret;
+
+ ret = dm_i2c_reg_read(priv->chip2, PALMAS_GPIO_DATA_DIR);
+ if (ret < 0) {
+ log_debug("%s: GPIO_DATA_DIR read failed, %d\n", __func__, ret);
+ return ret;
+ }
+
+ if (ret & BIT(offset))
+ return GPIOF_OUTPUT;
+ else
+ return GPIOF_INPUT;
+}
+
+static const struct dm_gpio_ops palmas_gpio_ops = {
+ .direction_input = palmas_gpio_direction_input,
+ .direction_output = palmas_gpio_direction_output,
+ .get_value = palmas_gpio_get_value,
+ .set_value = palmas_gpio_set_value,
+ .get_function = palmas_gpio_get_function,
+};
+
+static int palmas_gpio_probe(struct udevice *dev)
+{
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+
+ uc_priv->gpio_count = NUM_GPIOS;
+ uc_priv->bank_name = "GPIO";
+
+ return 0;
+}
+
+static const struct udevice_id palmas_ids[] = {
+ { .compatible = "ti,palmas-gpio" },
+ { }
+};
+
+U_BOOT_DRIVER(palmas_gpio) = {
+ .name = PALMAS_GPIO_DRIVER,
+ .id = UCLASS_GPIO,
+ .of_match = palmas_ids,
+ .probe = palmas_gpio_probe,
+ .ops = &palmas_gpio_ops,
+};
generated by cgit v1.2.3 (git 2.0.4) at 2025-07-25 12:54:12 +0000