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342 lines
8.3 KiB
342 lines
8.3 KiB
/* Copyright (c) 2023 Intel Corporation. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define DT_DRV_COMPAT intel_sedi_gpio |
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#include "sedi_driver_gpio.h" |
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#include <zephyr/drivers/gpio.h> |
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#include <zephyr/kernel.h> |
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#include <zephyr/drivers/gpio/gpio_utils.h> |
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#include <zephyr/pm/device.h> |
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struct gpio_sedi_config { |
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/* gpio_driver_data needs to be first */ |
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struct gpio_driver_config common; |
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sedi_gpio_t device; |
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uint32_t pin_nums; |
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void (*irq_config)(void); |
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DEVICE_MMIO_ROM; |
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}; |
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struct gpio_sedi_data { |
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/* gpio_driver_data needs to be first */ |
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struct gpio_driver_config common; |
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sys_slist_t callbacks; |
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DEVICE_MMIO_RAM; |
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}; |
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static int gpio_sedi_init(const struct device *dev); |
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#ifdef CONFIG_PM_DEVICE |
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static int gpio_sedi_suspend_device(const struct device *dev) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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int ret; |
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if (pm_device_is_busy(dev)) { |
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return -EBUSY; |
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} |
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ret = sedi_gpio_set_power(gpio_dev, SEDI_POWER_SUSPEND); |
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if (ret != SEDI_DRIVER_OK) { |
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return -EIO; |
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} |
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return 0; |
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} |
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static int gpio_sedi_resume_device_from_suspend(const struct device *dev) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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int ret; |
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ret = sedi_gpio_set_power(gpio_dev, SEDI_POWER_FULL); |
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if (ret != SEDI_DRIVER_OK) { |
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return -EIO; |
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} |
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return 0; |
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} |
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static int gpio_sedi_pm_action(const struct device *dev, |
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enum pm_device_action action) |
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{ |
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int ret = 0; |
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switch (action) { |
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case PM_DEVICE_ACTION_SUSPEND: |
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ret = gpio_sedi_suspend_device(dev); |
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break; |
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case PM_DEVICE_ACTION_RESUME: |
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ret = gpio_sedi_resume_device_from_suspend(dev); |
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break; |
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default: |
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ret = -ENOTSUP; |
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} |
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return ret; |
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} |
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#endif /* CONFIG_PM_DEVICE */ |
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static void gpio_sedi_callback(const uint32_t pin_mask, |
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const sedi_gpio_port_t port, |
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void *param) |
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{ |
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ARG_UNUSED(port); |
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struct device *dev = (struct device *)param; |
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struct gpio_sedi_data *data = |
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(struct gpio_sedi_data *)(dev->data); |
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/* call the callbacks */ |
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gpio_fire_callbacks(&data->callbacks, dev, pin_mask); |
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} |
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static void gpio_sedi_write_raw(const struct device *dev, |
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uint32_t pins, |
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bool is_clear) |
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{ |
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uint8_t i; |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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sedi_gpio_pin_state_t val; |
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if (is_clear) { |
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val = SEDI_GPIO_STATE_LOW; |
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} else { |
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val = SEDI_GPIO_STATE_HIGH; |
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} |
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for (i = 0; i < config->pin_nums; i++) { |
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if (pins & 0x1) { |
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sedi_gpio_write_pin(gpio_dev, i, val); |
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} |
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pins >>= 1; |
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if (pins == 0) { |
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break; |
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} |
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} |
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} |
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static int gpio_sedi_configure(const struct device *dev, gpio_pin_t pin, |
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gpio_flags_t flags) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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sedi_gpio_pin_config_t pin_config = { 0 }; |
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if ((flags & GPIO_OUTPUT) && (flags & GPIO_INPUT)) { |
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/* Pin cannot be configured as input and output */ |
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return -ENOTSUP; |
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} else if (!(flags & (GPIO_INPUT | GPIO_OUTPUT))) { |
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/* Pin has to be configured as input or output */ |
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return -ENOTSUP; |
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} |
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pin_config.enable_interrupt = false; |
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/* Map direction */ |
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if (flags & GPIO_OUTPUT) { |
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pin_config.direction = SEDI_GPIO_DIR_MODE_OUTPUT; |
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sedi_gpio_config_pin(gpio_dev, pin, pin_config); |
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/* Set start state */ |
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if ((flags & GPIO_OUTPUT_INIT_HIGH) != 0) { |
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sedi_gpio_write_pin(gpio_dev, pin, 1); |
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} else if ((flags & GPIO_OUTPUT_INIT_LOW) != 0) { |
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sedi_gpio_write_pin(gpio_dev, pin, 0); |
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} |
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} else { |
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pin_config.direction = SEDI_GPIO_DIR_MODE_INPUT; |
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sedi_gpio_config_pin(gpio_dev, pin, pin_config); |
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} |
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return 0; |
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} |
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static int gpio_sedi_get_raw(const struct device *dev, uint32_t *value) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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*value = sedi_gpio_read_pin_32bits(gpio_dev, 0); |
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return 0; |
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} |
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static int gpio_sedi_set_masked_raw(const struct device *dev, |
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uint32_t mask, |
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uint32_t value) |
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{ |
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gpio_sedi_write_raw(dev, (mask & value), false); |
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return 0; |
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} |
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static int gpio_sedi_set_bits_raw(const struct device *dev, uint32_t pins) |
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{ |
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gpio_sedi_write_raw(dev, pins, false); |
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return 0; |
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} |
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static int gpio_sedi_clear_bits_raw(const struct device *dev, uint32_t pins) |
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{ |
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gpio_sedi_write_raw(dev, pins, true); |
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return 0; |
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} |
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static int gpio_sedi_toggle_bits(const struct device *dev, uint32_t pins) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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uint8_t i; |
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for (i = 0; i < config->pin_nums; i++) { |
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if (pins & 0x1) { |
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sedi_gpio_toggle_pin(gpio_dev, i); |
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} |
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pins >>= 1; |
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if (pins == 0) { |
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break; |
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} |
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} |
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return 0; |
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} |
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static int gpio_sedi_interrupt_configure(const struct device *dev, |
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gpio_pin_t pin, |
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enum gpio_int_mode mode, |
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enum gpio_int_trig trig) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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sedi_gpio_pin_config_t pin_config = { 0 }; |
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/* Not support level trigger */ |
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if (mode == GPIO_INT_MODE_LEVEL) { |
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return -EINVAL; |
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} |
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/* Only input needs interrupt enabled */ |
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pin_config.direction = SEDI_GPIO_DIR_MODE_INPUT; |
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pin_config.enable_wakeup = true; |
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if (mode == GPIO_INT_MODE_DISABLED) { |
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pin_config.enable_interrupt = false; |
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} else { |
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pin_config.enable_interrupt = true; |
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switch (trig) { |
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case GPIO_INT_TRIG_LOW: |
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pin_config.interrupt_mode = |
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SEDI_GPIO_INT_MODE_FALLING_EDGE; |
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break; |
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case GPIO_INT_TRIG_HIGH: |
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pin_config.interrupt_mode = |
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SEDI_GPIO_INT_MODE_RISING_EDGE; |
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break; |
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case GPIO_INT_TRIG_BOTH: |
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pin_config.interrupt_mode = |
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SEDI_GPIO_INT_MODE_BOTH_EDGE; |
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break; |
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default: |
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return -EINVAL; |
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} |
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} |
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/* Configure interrupt mode */ |
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sedi_gpio_config_pin(gpio_dev, pin, pin_config); |
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return 0; |
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} |
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static int gpio_sedi_manage_callback(const struct device *dev, |
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struct gpio_callback *callback, |
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bool set) |
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{ |
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struct gpio_sedi_data *data = dev->data; |
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gpio_manage_callback(&(data->callbacks), callback, set); |
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return 0; |
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} |
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static uint32_t gpio_sedi_get_pending(const struct device *dev) |
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{ |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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return sedi_gpio_get_gisr(gpio_dev, 0); |
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} |
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static DEVICE_API(gpio, gpio_sedi_driver_api) = { |
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.pin_configure = gpio_sedi_configure, |
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.port_get_raw = gpio_sedi_get_raw, |
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.port_set_masked_raw = gpio_sedi_set_masked_raw, |
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.port_set_bits_raw = gpio_sedi_set_bits_raw, |
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.port_clear_bits_raw = gpio_sedi_clear_bits_raw, |
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.port_toggle_bits = gpio_sedi_toggle_bits, |
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.pin_interrupt_configure = gpio_sedi_interrupt_configure, |
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.manage_callback = gpio_sedi_manage_callback, |
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.get_pending_int = gpio_sedi_get_pending |
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}; |
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extern void gpio_isr(IN sedi_gpio_t gpio_device); |
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static int gpio_sedi_init(const struct device *dev) |
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{ |
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int ret; |
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const struct gpio_sedi_config *config = dev->config; |
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sedi_gpio_t gpio_dev = config->device; |
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DEVICE_MMIO_MAP(dev, K_MEM_CACHE_NONE); |
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/* Call sedi gpio init */ |
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ret = sedi_gpio_init(gpio_dev, gpio_sedi_callback, (void *)dev); |
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if (ret != 0) { |
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return ret; |
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} |
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sedi_gpio_set_power(gpio_dev, SEDI_POWER_FULL); |
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config->irq_config(); |
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return 0; |
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} |
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#define GPIO_SEDI_IRQ_FLAGS_SENSE0(n) 0 |
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#define GPIO_SEDI_IRQ_FLAGS_SENSE1(n) DT_INST_IRQ(n, sense) |
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#define GPIO_SEDI_IRQ_FLAGS(n) \ |
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_CONCAT(GPIO_SEDI_IRQ_FLAGS_SENSE, DT_INST_IRQ_HAS_CELL(n, sense))(n) |
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#define GPIO_DEVICE_INIT_SEDI(n) \ |
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static struct gpio_sedi_data gpio##n##_data; \ |
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static void gpio_sedi_irq_config_##n(void) \ |
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{ \ |
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IRQ_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority), \ |
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gpio_isr, n, \ |
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GPIO_SEDI_IRQ_FLAGS(n)); \ |
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irq_enable(DT_INST_IRQN(n)); \ |
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}; \ |
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static const struct gpio_sedi_config gpio##n##_config = { \ |
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DEVICE_MMIO_ROM_INIT(DT_DRV_INST(n)), \ |
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.common = { 0xFFFFFFFF }, \ |
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.device = DT_INST_PROP(n, peripheral_id), \ |
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.pin_nums = DT_INST_PROP(n, ngpios), \ |
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.irq_config = gpio_sedi_irq_config_##n, \ |
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}; \ |
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PM_DEVICE_DEFINE(gpio_##n, gpio_sedi_pm_action); \ |
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DEVICE_DT_INST_DEFINE(n, \ |
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gpio_sedi_init, \ |
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PM_DEVICE_GET(gpio_##n), \ |
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&gpio##n##_data, \ |
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&gpio##n##_config, \ |
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POST_KERNEL, \ |
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CONFIG_GPIO_INIT_PRIORITY, \ |
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&gpio_sedi_driver_api); |
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DT_INST_FOREACH_STATUS_OKAY(GPIO_DEVICE_INIT_SEDI)
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