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zephyr/drivers/gpio/gpio_ambiq.c

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/*
* Copyright (c) 2023 Antmicro <www.antmicro.com>
* Copyright (c) 2023 Ambiq Micro Inc. <www.ambiq.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT ambiq_gpio_bank
#include <errno.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio/gpio_utils.h>
#include <zephyr/irq.h>
#include <zephyr/spinlock.h>
#include <am_mcu_apollo.h>
typedef void (*ambiq_gpio_cfg_func_t)(void);
struct ambiq_gpio_config {
struct gpio_driver_config common;
uint32_t base;
uint32_t offset;
uint32_t irq_num;
ambiq_gpio_cfg_func_t cfg_func;
uint8_t ngpios;
};
struct ambiq_gpio_data {
struct gpio_driver_data common;
sys_slist_t cb;
struct k_spinlock lock;
};
static int ambiq_gpio_pin_configure(const struct device *dev, gpio_pin_t pin, gpio_flags_t flags)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
int ret = 0;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
pin += dev_cfg->offset;
am_hal_gpio_pincfg_t pincfg = g_AM_HAL_GPIO_DEFAULT;
if (flags & GPIO_INPUT) {
pincfg = g_AM_HAL_GPIO_INPUT;
if (flags & GPIO_PULL_UP) {
pincfg.ePullup = AM_HAL_GPIO_PIN_PULLUP_1_5K;
} else if (flags & GPIO_PULL_DOWN) {
pincfg.ePullup = AM_HAL_GPIO_PIN_PULLDOWN;
}
}
if (flags & GPIO_OUTPUT) {
if (flags & GPIO_SINGLE_ENDED) {
if (flags & GPIO_LINE_OPEN_DRAIN) {
pincfg.eGPOutcfg = AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN;
if (flags & GPIO_PULL_UP) {
pincfg.ePullup = AM_HAL_GPIO_PIN_PULLUP_1_5K;
} else if (flags & GPIO_PULL_DOWN) {
pincfg.ePullup = AM_HAL_GPIO_PIN_PULLDOWN;
}
}
} else {
pincfg.eGPOutcfg = AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL;
}
}
if (flags & GPIO_DISCONNECTED) {
pincfg = g_AM_HAL_GPIO_DEFAULT;
}
if (flags & GPIO_OUTPUT_INIT_HIGH) {
pincfg.eCEpol = AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH;
am_hal_gpio_state_write(pin, AM_HAL_GPIO_OUTPUT_SET);
} else if (flags & GPIO_OUTPUT_INIT_LOW) {
pincfg.eCEpol = AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW;
am_hal_gpio_state_write(pin, AM_HAL_GPIO_OUTPUT_CLEAR);
}
#else
pin += (dev_cfg->offset >> 2);
am_hal_gpio_pincfg_t pincfg = am_hal_gpio_pincfg_default;
if (flags & GPIO_INPUT) {
pincfg = am_hal_gpio_pincfg_input;
if (flags & GPIO_PULL_UP) {
pincfg.GP.cfg_b.ePullup = AM_HAL_GPIO_PIN_PULLUP_50K;
} else if (flags & GPIO_PULL_DOWN) {
pincfg.GP.cfg_b.ePullup = AM_HAL_GPIO_PIN_PULLDOWN_50K;
}
}
if (flags & GPIO_OUTPUT) {
if (flags & GPIO_SINGLE_ENDED) {
if (flags & GPIO_LINE_OPEN_DRAIN) {
pincfg.GP.cfg_b.eGPOutCfg = AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN;
if (flags & GPIO_PULL_UP) {
pincfg.GP.cfg_b.ePullup = AM_HAL_GPIO_PIN_PULLUP_50K;
} else if (flags & GPIO_PULL_DOWN) {
pincfg.GP.cfg_b.ePullup = AM_HAL_GPIO_PIN_PULLDOWN_50K;
}
}
} else {
pincfg.GP.cfg_b.eGPOutCfg = AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL;
}
}
if (flags & GPIO_DISCONNECTED) {
pincfg = am_hal_gpio_pincfg_disabled;
}
if (flags & GPIO_OUTPUT_INIT_HIGH) {
pincfg.GP.cfg_b.eCEpol = AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH;
am_hal_gpio_state_write(pin, AM_HAL_GPIO_OUTPUT_SET);
} else if (flags & GPIO_OUTPUT_INIT_LOW) {
pincfg.GP.cfg_b.eCEpol = AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW;
am_hal_gpio_state_write(pin, AM_HAL_GPIO_OUTPUT_CLEAR);
}
#endif
if (am_hal_gpio_pinconfig(pin, pincfg) != AM_HAL_STATUS_SUCCESS) {
ret = -ENOTSUP;
}
return ret;
}
#ifdef CONFIG_GPIO_GET_CONFIG
static int ambiq_gpio_get_config(const struct device *dev, gpio_pin_t pin, gpio_flags_t *out_flags)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
am_hal_gpio_pincfg_t pincfg;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
pin += dev_cfg->offset;
am_hal_gpio_pinconfig_get(pin, &pincfg);
if (pincfg.eGPOutcfg == AM_HAL_GPIO_PIN_OUTCFG_DISABLE &&
pincfg.eGPInput == AM_HAL_GPIO_PIN_INPUT_NONE) {
*out_flags = GPIO_DISCONNECTED;
}
if (pincfg.eGPInput == AM_HAL_GPIO_PIN_INPUT_ENABLE) {
*out_flags = GPIO_INPUT;
if (pincfg.ePullup == AM_HAL_GPIO_PIN_PULLUP_1_5K) {
*out_flags |= GPIO_PULL_UP;
} else if (pincfg.ePullup == AM_HAL_GPIO_PIN_PULLDOWN) {
*out_flags |= GPIO_PULL_DOWN;
}
}
if (pincfg.eGPOutcfg == AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL) {
*out_flags = GPIO_OUTPUT | GPIO_PUSH_PULL;
if (pincfg.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH) {
*out_flags |= GPIO_OUTPUT_HIGH;
} else if (pincfg.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW) {
*out_flags |= GPIO_OUTPUT_LOW;
}
}
if (pincfg.eGPOutcfg == AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN) {
*out_flags = GPIO_OUTPUT | GPIO_OPEN_DRAIN;
if (pincfg.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH) {
*out_flags |= GPIO_OUTPUT_HIGH;
} else if (pincfg.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW) {
*out_flags |= GPIO_OUTPUT_LOW;
}
}
#else
pin += (dev_cfg->offset >> 2);
am_hal_gpio_pinconfig_get(pin, &pincfg);
if (pincfg.GP.cfg_b.eGPOutCfg == AM_HAL_GPIO_PIN_OUTCFG_DISABLE &&
pincfg.GP.cfg_b.eGPInput == AM_HAL_GPIO_PIN_INPUT_NONE) {
*out_flags = GPIO_DISCONNECTED;
}
if (pincfg.GP.cfg_b.eGPInput == AM_HAL_GPIO_PIN_INPUT_ENABLE) {
*out_flags = GPIO_INPUT;
if (pincfg.GP.cfg_b.ePullup == AM_HAL_GPIO_PIN_PULLUP_50K) {
*out_flags |= GPIO_PULL_UP;
} else if (pincfg.GP.cfg_b.ePullup == AM_HAL_GPIO_PIN_PULLDOWN_50K) {
*out_flags |= GPIO_PULL_DOWN;
}
}
if (pincfg.GP.cfg_b.eGPOutCfg == AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL) {
*out_flags = GPIO_OUTPUT | GPIO_PUSH_PULL;
if (pincfg.GP.cfg_b.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH) {
*out_flags |= GPIO_OUTPUT_HIGH;
} else if (pincfg.GP.cfg_b.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW) {
*out_flags |= GPIO_OUTPUT_LOW;
}
}
if (pincfg.GP.cfg_b.eGPOutCfg == AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN) {
*out_flags = GPIO_OUTPUT | GPIO_OPEN_DRAIN;
if (pincfg.GP.cfg_b.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVEHIGH) {
*out_flags |= GPIO_OUTPUT_HIGH;
} else if (pincfg.GP.cfg_b.eCEpol == AM_HAL_GPIO_PIN_CEPOL_ACTIVELOW) {
*out_flags |= GPIO_OUTPUT_LOW;
}
}
#endif
return 0;
}
#endif
#ifdef CONFIG_GPIO_GET_DIRECTION
static int ambiq_gpio_port_get_direction(const struct device *dev, gpio_port_pins_t map,
gpio_port_pins_t *inputs, gpio_port_pins_t *outputs)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
am_hal_gpio_pincfg_t pincfg;
gpio_port_pins_t ip = 0;
gpio_port_pins_t op = 0;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
uint32_t pin_offset = dev_cfg->offset;
if (inputs != NULL) {
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((map >> i) & 1) {
am_hal_gpio_pinconfig_get(i + pin_offset, &pincfg);
if (pincfg.eGPInput == AM_HAL_GPIO_PIN_INPUT_ENABLE) {
ip |= BIT(i);
}
}
}
*inputs = ip;
}
if (outputs != NULL) {
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((map >> i) & 1) {
am_hal_gpio_pinconfig_get(i + pin_offset, &pincfg);
if (pincfg.eGPOutcfg == AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL ||
pincfg.eGPOutcfg == AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN) {
op |= BIT(i);
}
}
}
*outputs = op;
}
#else
uint32_t pin_offset = dev_cfg->offset >> 2;
if (inputs != NULL) {
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((map >> i) & 1) {
am_hal_gpio_pinconfig_get(i + pin_offset, &pincfg);
if (pincfg.GP.cfg_b.eGPInput == AM_HAL_GPIO_PIN_INPUT_ENABLE) {
ip |= BIT(i);
}
}
}
*inputs = ip;
}
if (outputs != NULL) {
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((map >> i) & 1) {
am_hal_gpio_pinconfig_get(i + pin_offset, &pincfg);
if (pincfg.GP.cfg_b.eGPOutCfg == AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL ||
pincfg.GP.cfg_b.eGPOutCfg == AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN) {
op |= BIT(i);
}
}
}
*outputs = op;
}
#endif
return 0;
}
#endif
static int ambiq_gpio_port_get_raw(const struct device *dev, gpio_port_value_t *value)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
uint32_t pin_offset;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
pin_offset = dev_cfg->offset;
#else
pin_offset = dev_cfg->offset >> 2;
#endif
*value = (*AM_HAL_GPIO_RDn(pin_offset)) | (*AM_HAL_GPIO_WTn(pin_offset));
return 0;
}
static int ambiq_gpio_port_set_masked_raw(const struct device *dev, gpio_port_pins_t mask,
gpio_port_value_t value)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
uint32_t pin_offset = dev_cfg->offset;
#else
uint32_t pin_offset = dev_cfg->offset >> 2;
#endif
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((mask >> i) & 1) {
am_hal_gpio_state_write(i + pin_offset, ((value >> i) & 1));
}
}
return 0;
}
static int ambiq_gpio_port_set_bits_raw(const struct device *dev, gpio_port_pins_t pins)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
uint32_t pin_offset = dev_cfg->offset;
#else
uint32_t pin_offset = dev_cfg->offset >> 2;
#endif
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((pins >> i) & 1) {
am_hal_gpio_state_write(i + pin_offset, AM_HAL_GPIO_OUTPUT_SET);
}
}
return 0;
}
static int ambiq_gpio_port_clear_bits_raw(const struct device *dev, gpio_port_pins_t pins)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
uint32_t pin_offset = dev_cfg->offset;
#else
uint32_t pin_offset = dev_cfg->offset >> 2;
#endif
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((pins >> i) & 1) {
am_hal_gpio_state_write(i + pin_offset, AM_HAL_GPIO_OUTPUT_CLEAR);
}
}
return 0;
}
static int ambiq_gpio_port_toggle_bits(const struct device *dev, gpio_port_pins_t pins)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
uint32_t pin_offset = dev_cfg->offset;
#else
uint32_t pin_offset = dev_cfg->offset >> 2;
#endif
for (int i = 0; i < dev_cfg->ngpios; i++) {
if ((pins >> i) & 1) {
am_hal_gpio_state_write(i + pin_offset, AM_HAL_GPIO_OUTPUT_TOGGLE);
}
}
return 0;
}
#define APOLLO3_HANDLE_SHARED_GPIO_IRQ(n) \
static const struct device *const dev_##n = DEVICE_DT_INST_GET(n); \
const struct ambiq_gpio_config *cfg_##n = dev_##n->config; \
struct ambiq_gpio_data *const data_##n = dev_##n->data; \
uint32_t status_##n = (uint32_t)(ui64Status >> cfg_##n->offset); \
if (status_##n) { \
gpio_fire_callbacks(&data_##n->cb, dev_##n, status_##n); \
}
#define APOLLO3P_HANDLE_SHARED_GPIO_IRQ(n) \
static const struct device *const dev_##n = DEVICE_DT_INST_GET(n); \
struct ambiq_gpio_data *const data_##n = dev_##n->data; \
if (pGpioIntStatusMask->U.Msk[n]) { \
gpio_fire_callbacks(&data_##n->cb, dev_##n, pGpioIntStatusMask->U.Msk[n]); \
}
static void ambiq_gpio_isr(const struct device *dev)
{
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
ARG_UNUSED(dev);
#if defined(CONFIG_SOC_APOLLO3_BLUE)
uint64_t ui64Status;
am_hal_gpio_interrupt_status_get(false, &ui64Status);
am_hal_gpio_interrupt_clear(ui64Status);
DT_INST_FOREACH_STATUS_OKAY(APOLLO3_HANDLE_SHARED_GPIO_IRQ)
#elif defined(CONFIG_SOC_APOLLO3P_BLUE)
AM_HAL_GPIO_MASKCREATE(GpioIntStatusMask);
am_hal_gpio_interrupt_status_get(false, pGpioIntStatusMask);
am_hal_gpio_interrupt_clear(pGpioIntStatusMask);
DT_INST_FOREACH_STATUS_OKAY(APOLLO3P_HANDLE_SHARED_GPIO_IRQ)
#endif
#else
uint32_t int_status;
struct ambiq_gpio_data *const data = dev->data;
const struct ambiq_gpio_config *const dev_cfg = dev->config;
am_hal_gpio_interrupt_irq_status_get(dev_cfg->irq_num, false, &int_status);
am_hal_gpio_interrupt_irq_clear(dev_cfg->irq_num, int_status);
gpio_fire_callbacks(&data->cb, dev, int_status);
#endif
}
static int ambiq_gpio_pin_interrupt_configure(const struct device *dev, gpio_pin_t pin,
enum gpio_int_mode mode, enum gpio_int_trig trig)
{
const struct ambiq_gpio_config *const dev_cfg = dev->config;
struct ambiq_gpio_data *const data = dev->data;
int ret = 0;
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
am_hal_gpio_pincfg_t pincfg = g_AM_HAL_GPIO_DEFAULT;
int gpio_pin = pin + dev_cfg->offset;
ret = am_hal_gpio_pinconfig_get(gpio_pin, &pincfg);
if (mode == GPIO_INT_MODE_DISABLED) {
pincfg.eIntDir = AM_HAL_GPIO_PIN_INTDIR_NONE;
ret = am_hal_gpio_pinconfig(gpio_pin, pincfg);
k_spinlock_key_t key = k_spin_lock(&data->lock);
AM_HAL_GPIO_MASKCREATE(GpioIntMask);
ret = am_hal_gpio_interrupt_clear(AM_HAL_GPIO_MASKBIT(pGpioIntMask, gpio_pin));
ret = am_hal_gpio_interrupt_disable(AM_HAL_GPIO_MASKBIT(pGpioIntMask, gpio_pin));
k_spin_unlock(&data->lock, key);
} else {
if (mode == GPIO_INT_MODE_LEVEL) {
return -ENOTSUP;
}
switch (trig) {
case GPIO_INT_TRIG_LOW:
pincfg.eIntDir = AM_HAL_GPIO_PIN_INTDIR_HI2LO;
break;
case GPIO_INT_TRIG_HIGH:
pincfg.eIntDir = AM_HAL_GPIO_PIN_INTDIR_LO2HI;
break;
case GPIO_INT_TRIG_BOTH:
pincfg.eIntDir = AM_HAL_GPIO_PIN_INTDIR_BOTH;
break;
default:
pincfg.eIntDir = AM_HAL_GPIO_PIN_INTDIR_NONE;
break;
}
ret = am_hal_gpio_pinconfig(gpio_pin, pincfg);
irq_enable(dev_cfg->irq_num);
k_spinlock_key_t key = k_spin_lock(&data->lock);
AM_HAL_GPIO_MASKCREATE(GpioIntMask);
ret = am_hal_gpio_interrupt_clear(AM_HAL_GPIO_MASKBIT(pGpioIntMask, gpio_pin));
ret = am_hal_gpio_interrupt_enable(AM_HAL_GPIO_MASKBIT(pGpioIntMask, gpio_pin));
k_spin_unlock(&data->lock, key);
}
#else
am_hal_gpio_pincfg_t pincfg = am_hal_gpio_pincfg_default;
int gpio_pin = pin + (dev_cfg->offset >> 2);
uint32_t int_status;
ret = am_hal_gpio_pinconfig_get(gpio_pin, &pincfg);
if (mode == GPIO_INT_MODE_DISABLED) {
pincfg.GP.cfg_b.eIntDir = AM_HAL_GPIO_PIN_INTDIR_NONE;
ret = am_hal_gpio_pinconfig(gpio_pin, pincfg);
k_spinlock_key_t key = k_spin_lock(&data->lock);
ret = am_hal_gpio_interrupt_irq_status_get(dev_cfg->irq_num, false, &int_status);
ret = am_hal_gpio_interrupt_irq_clear(dev_cfg->irq_num, int_status);
ret = am_hal_gpio_interrupt_control(AM_HAL_GPIO_INT_CHANNEL_0,
AM_HAL_GPIO_INT_CTRL_INDV_DISABLE,
(void *)&gpio_pin);
k_spin_unlock(&data->lock, key);
} else {
if (mode == GPIO_INT_MODE_LEVEL) {
return -ENOTSUP;
}
switch (trig) {
case GPIO_INT_TRIG_LOW:
pincfg.GP.cfg_b.eIntDir = AM_HAL_GPIO_PIN_INTDIR_HI2LO;
break;
case GPIO_INT_TRIG_HIGH:
pincfg.GP.cfg_b.eIntDir = AM_HAL_GPIO_PIN_INTDIR_LO2HI;
break;
case GPIO_INT_TRIG_BOTH:
/*
* GPIO_INT_TRIG_BOTH is not supported on Ambiq Apollo4 Plus Platform
* ERR008: GPIO: Dual-edge interrupts are not vectoring
*/
return -ENOTSUP;
default:
return -EINVAL;
}
ret = am_hal_gpio_pinconfig(gpio_pin, pincfg);
irq_enable(dev_cfg->irq_num);
k_spinlock_key_t key = k_spin_lock(&data->lock);
ret = am_hal_gpio_interrupt_irq_status_get(dev_cfg->irq_num, false, &int_status);
ret = am_hal_gpio_interrupt_irq_clear(dev_cfg->irq_num, int_status);
ret = am_hal_gpio_interrupt_control(AM_HAL_GPIO_INT_CHANNEL_0,
AM_HAL_GPIO_INT_CTRL_INDV_ENABLE,
(void *)&gpio_pin);
k_spin_unlock(&data->lock, key);
}
#endif
return ret;
}
static int ambiq_gpio_manage_callback(const struct device *dev, struct gpio_callback *callback,
bool set)
{
struct ambiq_gpio_data *const data = dev->data;
return gpio_manage_callback(&data->cb, callback, set);
}
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
static void ambiq_gpio_cfg_func(void)
{
/* Apollo3 GPIO banks share the same irq number, connect to bank0 once when init and handle
* different banks in ambiq_gpio_isr
*/
static bool global_irq_init = true;
if (!global_irq_init) {
return;
}
global_irq_init = false;
/* Shared irq config default to BANK0. */
IRQ_CONNECT(GPIO_IRQn, DT_INST_IRQ(0, priority), ambiq_gpio_isr, DEVICE_DT_INST_GET(0), 0);
}
#endif
static int ambiq_gpio_init(const struct device *port)
{
const struct ambiq_gpio_config *const dev_cfg = port->config;
NVIC_ClearPendingIRQ(dev_cfg->irq_num);
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
ambiq_gpio_cfg_func();
#else
dev_cfg->cfg_func();
#endif
return 0;
}
static const struct gpio_driver_api ambiq_gpio_drv_api = {
.pin_configure = ambiq_gpio_pin_configure,
#ifdef CONFIG_GPIO_GET_CONFIG
.pin_get_config = ambiq_gpio_get_config,
#endif
.port_get_raw = ambiq_gpio_port_get_raw,
.port_set_masked_raw = ambiq_gpio_port_set_masked_raw,
.port_set_bits_raw = ambiq_gpio_port_set_bits_raw,
.port_clear_bits_raw = ambiq_gpio_port_clear_bits_raw,
.port_toggle_bits = ambiq_gpio_port_toggle_bits,
.pin_interrupt_configure = ambiq_gpio_pin_interrupt_configure,
.manage_callback = ambiq_gpio_manage_callback,
#ifdef CONFIG_GPIO_GET_DIRECTION
.port_get_direction = ambiq_gpio_port_get_direction,
#endif
};
#if defined(CONFIG_SOC_SERIES_APOLLO3X)
/* Apollo3 GPIO banks share the same irq number, connect irq here will cause build error, so we
* leave this function blank here and do it in ambiq_gpio_cfg_func
*/
#define AMBIQ_GPIO_CONFIG_FUNC(n) static void ambiq_gpio_cfg_func_##n(void){};
#else
#define AMBIQ_GPIO_CONFIG_FUNC(n) \
static void ambiq_gpio_cfg_func_##n(void) \
{ \
IRQ_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority), ambiq_gpio_isr, \
DEVICE_DT_INST_GET(n), 0); \
\
return; \
};
#endif
#define AMBIQ_GPIO_DEFINE(n) \
static struct ambiq_gpio_data ambiq_gpio_data_##n; \
static void ambiq_gpio_cfg_func_##n(void); \
static const struct ambiq_gpio_config ambiq_gpio_config_##n = { \
.common = \
{ \
.port_pin_mask = GPIO_PORT_PIN_MASK_FROM_DT_INST(n), \
}, \
.base = DT_REG_ADDR(DT_INST_PARENT(n)), \
.offset = DT_INST_REG_ADDR(n), \
.ngpios = DT_INST_PROP(n, ngpios), \
.irq_num = DT_INST_IRQN(n), \
.cfg_func = ambiq_gpio_cfg_func_##n}; \
AMBIQ_GPIO_CONFIG_FUNC(n) \
DEVICE_DT_INST_DEFINE(n, ambiq_gpio_init, NULL, &ambiq_gpio_data_##n, \
&ambiq_gpio_config_##n, PRE_KERNEL_1, CONFIG_GPIO_INIT_PRIORITY, \
&ambiq_gpio_drv_api);
DT_INST_FOREACH_STATUS_OKAY(AMBIQ_GPIO_DEFINE)
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