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