| /* |
| * Copyright (c) 2016 Freescale Semiconductor, Inc. |
| * Copyright (c) 2017, NXP |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <errno.h> |
| #include <device.h> |
| #include <gpio.h> |
| #include <soc.h> |
| #include <fsl_common.h> |
| #include <fsl_port.h> |
| |
| #include "gpio_utils.h" |
| |
| struct gpio_mcux_config { |
| GPIO_Type *gpio_base; |
| PORT_Type *port_base; |
| unsigned int flags; |
| }; |
| |
| struct gpio_mcux_data { |
| /* port ISR callback routine address */ |
| sys_slist_t callbacks; |
| /* pin callback routine enable flags, by pin number */ |
| u32_t pin_callback_enables; |
| }; |
| |
| static int gpio_mcux_configure(struct device *dev, |
| int access_op, u32_t pin, int flags) |
| { |
| const struct gpio_mcux_config *config = dev->config->config_info; |
| GPIO_Type *gpio_base = config->gpio_base; |
| PORT_Type *port_base = config->port_base; |
| port_interrupt_t port_interrupt = 0; |
| u32_t mask = 0; |
| u32_t pcr = 0; |
| u8_t i; |
| |
| /* Check for an invalid pin configuration */ |
| if ((flags & GPIO_INT) && (flags & GPIO_DIR_OUT)) { |
| return -EINVAL; |
| } |
| |
| /* Check if GPIO port supports interrupts */ |
| if ((flags & GPIO_INT) && ((config->flags & GPIO_INT) == 0)) { |
| return -EINVAL; |
| } |
| |
| /* The flags contain options that require touching registers in the |
| * GPIO module and the corresponding PORT module. |
| * |
| * Start with the GPIO module and set up the pin direction register. |
| * 0 - pin is input, 1 - pin is output |
| */ |
| |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| if ((flags & GPIO_DIR_MASK) == GPIO_DIR_IN) { |
| gpio_base->PDDR &= ~BIT(pin); |
| } else { /* GPIO_DIR_OUT */ |
| gpio_base->PDDR |= BIT(pin); |
| } |
| } else { /* GPIO_ACCESS_BY_PORT */ |
| if ((flags & GPIO_DIR_MASK) == GPIO_DIR_IN) { |
| gpio_base->PDDR = 0x0; |
| } else { /* GPIO_DIR_OUT */ |
| gpio_base->PDDR = 0xFFFFFFFF; |
| } |
| } |
| |
| /* Now do the PORT module. Figure out the pullup/pulldown |
| * configuration, but don't write it to the PCR register yet. |
| */ |
| mask |= PORT_PCR_PE_MASK | PORT_PCR_PS_MASK; |
| |
| if ((flags & GPIO_PUD_MASK) == GPIO_PUD_PULL_UP) { |
| /* Enable the pull and select the pullup resistor. */ |
| pcr |= PORT_PCR_PE_MASK | PORT_PCR_PS_MASK; |
| |
| } else if ((flags & GPIO_PUD_MASK) == GPIO_PUD_PULL_DOWN) { |
| /* Enable the pull and select the pulldown resistor (deselect |
| * the pullup resistor. |
| */ |
| pcr |= PORT_PCR_PE_MASK; |
| } |
| |
| /* Still in the PORT module. Figure out the interrupt configuration, |
| * but don't write it to the PCR register yet. |
| */ |
| mask |= PORT_PCR_IRQC_MASK; |
| |
| if (flags & GPIO_INT) { |
| if (flags & GPIO_INT_EDGE) { |
| if (flags & GPIO_INT_ACTIVE_HIGH) { |
| port_interrupt = kPORT_InterruptRisingEdge; |
| } else if (flags & GPIO_INT_DOUBLE_EDGE) { |
| port_interrupt = kPORT_InterruptEitherEdge; |
| } else { |
| port_interrupt = kPORT_InterruptFallingEdge; |
| } |
| } else { /* GPIO_INT_LEVEL */ |
| if (flags & GPIO_INT_ACTIVE_HIGH) { |
| port_interrupt = kPORT_InterruptLogicOne; |
| } else { |
| port_interrupt = kPORT_InterruptLogicZero; |
| } |
| } |
| pcr |= PORT_PCR_IRQC(port_interrupt); |
| } |
| |
| /* Now we can write the PORT PCR register(s). If accessing by pin, we |
| * only need to write one PCR register. Otherwise, write all the PCR |
| * registers in the PORT module (one for each pin). |
| */ |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| port_base->PCR[pin] = (port_base->PCR[pin] & ~mask) | pcr; |
| } else { /* GPIO_ACCESS_BY_PORT */ |
| for (i = 0; i < ARRAY_SIZE(port_base->PCR); i++) { |
| port_base->PCR[i] = (port_base->PCR[pin] & ~mask) | pcr; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int gpio_mcux_write(struct device *dev, |
| int access_op, u32_t pin, u32_t value) |
| { |
| const struct gpio_mcux_config *config = dev->config->config_info; |
| GPIO_Type *gpio_base = config->gpio_base; |
| |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| if (value) { |
| /* Set the data output for the corresponding pin. |
| * Writing zeros to the other bits leaves the data |
| * output unchanged for the other pins. |
| */ |
| gpio_base->PSOR = BIT(pin); |
| } else { |
| /* Clear the data output for the corresponding pin. |
| * Writing zeros to the other bits leaves the data |
| * output unchanged for the other pins. |
| */ |
| gpio_base->PCOR = BIT(pin); |
| } |
| } else { /* GPIO_ACCESS_BY_PORT */ |
| /* Write the data output for all the pins */ |
| gpio_base->PDOR = value; |
| } |
| |
| return 0; |
| } |
| |
| static int gpio_mcux_read(struct device *dev, |
| int access_op, u32_t pin, u32_t *value) |
| { |
| const struct gpio_mcux_config *config = dev->config->config_info; |
| GPIO_Type *gpio_base = config->gpio_base; |
| |
| *value = gpio_base->PDIR; |
| |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| *value = (*value & BIT(pin)) >> pin; |
| } |
| |
| /* nothing more to do for GPIO_ACCESS_BY_PORT */ |
| |
| return 0; |
| } |
| |
| static int gpio_mcux_manage_callback(struct device *dev, |
| struct gpio_callback *callback, bool set) |
| { |
| struct gpio_mcux_data *data = dev->driver_data; |
| |
| _gpio_manage_callback(&data->callbacks, callback, set); |
| |
| return 0; |
| } |
| |
| static int gpio_mcux_enable_callback(struct device *dev, |
| int access_op, u32_t pin) |
| { |
| struct gpio_mcux_data *data = dev->driver_data; |
| |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| data->pin_callback_enables |= BIT(pin); |
| } else { |
| data->pin_callback_enables = 0xFFFFFFFF; |
| } |
| |
| return 0; |
| } |
| |
| static int gpio_mcux_disable_callback(struct device *dev, |
| int access_op, u32_t pin) |
| { |
| struct gpio_mcux_data *data = dev->driver_data; |
| |
| if (access_op == GPIO_ACCESS_BY_PIN) { |
| data->pin_callback_enables &= ~BIT(pin); |
| } else { |
| data->pin_callback_enables = 0; |
| } |
| |
| return 0; |
| } |
| |
| static void gpio_mcux_port_isr(void *arg) |
| { |
| struct device *dev = (struct device *)arg; |
| const struct gpio_mcux_config *config = dev->config->config_info; |
| struct gpio_mcux_data *data = dev->driver_data; |
| u32_t enabled_int, int_status; |
| |
| int_status = config->port_base->ISFR; |
| enabled_int = int_status & data->pin_callback_enables; |
| |
| _gpio_fire_callbacks(&data->callbacks, dev, enabled_int); |
| |
| /* Clear the port interrupts */ |
| config->port_base->ISFR = 0xFFFFFFFF; |
| } |
| |
| |
| static const struct gpio_driver_api gpio_mcux_driver_api = { |
| .config = gpio_mcux_configure, |
| .write = gpio_mcux_write, |
| .read = gpio_mcux_read, |
| .manage_callback = gpio_mcux_manage_callback, |
| .enable_callback = gpio_mcux_enable_callback, |
| .disable_callback = gpio_mcux_disable_callback, |
| }; |
| |
| #ifdef CONFIG_GPIO_MCUX_PORTA |
| static int gpio_mcux_porta_init(struct device *dev); |
| |
| static const struct gpio_mcux_config gpio_mcux_porta_config = { |
| .gpio_base = (GPIO_Type *) GPIO_A_BASE_ADDRESS, |
| .port_base = PORTA, |
| #ifdef GPIO_A_IRQ |
| .flags = GPIO_INT, |
| #else |
| .flags = 0, |
| #endif |
| }; |
| |
| static struct gpio_mcux_data gpio_mcux_porta_data; |
| |
| DEVICE_AND_API_INIT(gpio_mcux_porta, GPIO_A_LABEL, |
| gpio_mcux_porta_init, |
| &gpio_mcux_porta_data, &gpio_mcux_porta_config, |
| POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
| &gpio_mcux_driver_api); |
| |
| static int gpio_mcux_porta_init(struct device *dev) |
| { |
| #ifdef GPIO_A_IRQ |
| IRQ_CONNECT(GPIO_A_IRQ, GPIO_A_IRQ_PRIORITY, |
| gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_porta), 0); |
| |
| irq_enable(GPIO_A_IRQ); |
| |
| return 0; |
| #else |
| return -1; |
| #endif |
| } |
| #endif /* CONFIG_GPIO_MCUX_PORTA */ |
| |
| #ifdef CONFIG_GPIO_MCUX_PORTB |
| static int gpio_mcux_portb_init(struct device *dev); |
| |
| static const struct gpio_mcux_config gpio_mcux_portb_config = { |
| .gpio_base = (GPIO_Type *) GPIO_B_BASE_ADDRESS, |
| .port_base = PORTB, |
| #ifdef GPIO_B_IRQ |
| .flags = GPIO_INT, |
| #else |
| .flags = 0, |
| #endif |
| }; |
| |
| static struct gpio_mcux_data gpio_mcux_portb_data; |
| |
| DEVICE_AND_API_INIT(gpio_mcux_portb, GPIO_B_LABEL, |
| gpio_mcux_portb_init, |
| &gpio_mcux_portb_data, &gpio_mcux_portb_config, |
| POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
| &gpio_mcux_driver_api); |
| |
| static int gpio_mcux_portb_init(struct device *dev) |
| { |
| #ifdef GPIO_B_IRQ |
| IRQ_CONNECT(GPIO_B_IRQ, GPIO_B_IRQ_PRIORITY, |
| gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portb), 0); |
| |
| irq_enable(GPIO_B_IRQ); |
| |
| return 0; |
| #else |
| return -1; |
| #endif |
| } |
| #endif /* CONFIG_GPIO_MCUX_PORTB */ |
| |
| #ifdef CONFIG_GPIO_MCUX_PORTC |
| static int gpio_mcux_portc_init(struct device *dev); |
| |
| static const struct gpio_mcux_config gpio_mcux_portc_config = { |
| .gpio_base = (GPIO_Type *) GPIO_C_BASE_ADDRESS, |
| .port_base = PORTC, |
| #ifdef GPIO_C_IRQ |
| .flags = GPIO_INT, |
| #else |
| .flags = 0, |
| #endif |
| }; |
| |
| static struct gpio_mcux_data gpio_mcux_portc_data; |
| |
| DEVICE_AND_API_INIT(gpio_mcux_portc, GPIO_C_LABEL, |
| gpio_mcux_portc_init, |
| &gpio_mcux_portc_data, &gpio_mcux_portc_config, |
| POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
| &gpio_mcux_driver_api); |
| |
| static int gpio_mcux_portc_init(struct device *dev) |
| { |
| #ifdef GPIO_C_IRQ |
| IRQ_CONNECT(GPIO_C_IRQ, GPIO_C_IRQ_PRIORITY, |
| gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portc), 0); |
| |
| irq_enable(GPIO_C_IRQ); |
| |
| return 0; |
| #else |
| return -1; |
| #endif |
| } |
| #endif /* CONFIG_GPIO_MCUX_PORTC */ |
| |
| #ifdef CONFIG_GPIO_MCUX_PORTD |
| static int gpio_mcux_portd_init(struct device *dev); |
| |
| static const struct gpio_mcux_config gpio_mcux_portd_config = { |
| .gpio_base = (GPIO_Type *) GPIO_D_BASE_ADDRESS, |
| .port_base = PORTD, |
| #ifdef GPIO_D_IRQ |
| .flags = GPIO_INT, |
| #else |
| .flags = 0, |
| #endif |
| }; |
| |
| static struct gpio_mcux_data gpio_mcux_portd_data; |
| |
| DEVICE_AND_API_INIT(gpio_mcux_portd, GPIO_D_LABEL, |
| gpio_mcux_portd_init, |
| &gpio_mcux_portd_data, &gpio_mcux_portd_config, |
| POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
| &gpio_mcux_driver_api); |
| |
| static int gpio_mcux_portd_init(struct device *dev) |
| { |
| #ifdef GPIO_D_IRQ |
| IRQ_CONNECT(GPIO_D_IRQ, GPIO_D_IRQ_PRIORITY, |
| gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portd), 0); |
| |
| irq_enable(GPIO_D_IRQ); |
| |
| return 0; |
| #else |
| return -1; |
| #endif |
| } |
| #endif /* CONFIG_GPIO_MCUX_PORTD */ |
| |
| #ifdef CONFIG_GPIO_MCUX_PORTE |
| static int gpio_mcux_porte_init(struct device *dev); |
| |
| static const struct gpio_mcux_config gpio_mcux_porte_config = { |
| .gpio_base = (GPIO_Type *) GPIO_E_BASE_ADDRESS, |
| .port_base = PORTE, |
| #ifdef GPIO_E_IRQ |
| .flags = GPIO_INT, |
| #else |
| .flags = 0, |
| #endif |
| }; |
| |
| static struct gpio_mcux_data gpio_mcux_porte_data; |
| |
| DEVICE_AND_API_INIT(gpio_mcux_porte, GPIO_E_LABEL, |
| gpio_mcux_porte_init, |
| &gpio_mcux_porte_data, &gpio_mcux_porte_config, |
| POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
| &gpio_mcux_driver_api); |
| |
| static int gpio_mcux_porte_init(struct device *dev) |
| { |
| #ifdef GPIO_E_IRQ |
| IRQ_CONNECT(GPIO_E_IRQ, GPIO_E_IRQ_PRIORITY, |
| gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_porte), 0); |
| |
| irq_enable(GPIO_E_IRQ); |
| |
| return 0; |
| #else |
| return -1; |
| #endif |
| } |
| #endif /* CONFIG_GPIO_MCUX_PORTE */ |
| |