blob: 03e38ead5a02067d34f2e5f0cc286c18d61e948b [file] [log] [blame]
/*
* 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;
};
struct gpio_mcux_data {
/* port ISR callback routine address */
sys_slist_t callbacks;
/* pin callback routine enable flags, by pin number */
uint32_t pin_callback_enables;
};
static int gpio_mcux_configure(struct device *dev,
int access_op, uint32_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;
uint32_t mask = 0;
uint32_t pcr = 0;
uint8_t i;
/* Check for an invalid pin configuration */
if ((flags & GPIO_INT) && (flags & GPIO_DIR_OUT)) {
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, uint32_t pin, uint32_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, uint32_t pin, uint32_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, uint32_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, uint32_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;
uint32_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 = GPIOA,
.port_base = PORTA,
};
static struct gpio_mcux_data gpio_mcux_porta_data;
DEVICE_AND_API_INIT(gpio_mcux_porta, CONFIG_GPIO_MCUX_PORTA_NAME,
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)
{
IRQ_CONNECT(IRQ_GPIO_PORTA, CONFIG_GPIO_MCUX_PORTA_PRI,
gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_porta), 0);
irq_enable(IRQ_GPIO_PORTA);
return 0;
}
#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 = GPIOB,
.port_base = PORTB,
};
static struct gpio_mcux_data gpio_mcux_portb_data;
DEVICE_AND_API_INIT(gpio_mcux_portb, CONFIG_GPIO_MCUX_PORTB_NAME,
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)
{
IRQ_CONNECT(IRQ_GPIO_PORTB, CONFIG_GPIO_MCUX_PORTB_PRI,
gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portb), 0);
irq_enable(IRQ_GPIO_PORTB);
return 0;
}
#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 = GPIOC,
.port_base = PORTC,
};
static struct gpio_mcux_data gpio_mcux_portc_data;
DEVICE_AND_API_INIT(gpio_mcux_portc, CONFIG_GPIO_MCUX_PORTC_NAME,
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)
{
IRQ_CONNECT(IRQ_GPIO_PORTC, CONFIG_GPIO_MCUX_PORTC_PRI,
gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portc), 0);
irq_enable(IRQ_GPIO_PORTC);
return 0;
}
#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 = GPIOD,
.port_base = PORTD,
};
static struct gpio_mcux_data gpio_mcux_portd_data;
DEVICE_AND_API_INIT(gpio_mcux_portd, CONFIG_GPIO_MCUX_PORTD_NAME,
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)
{
IRQ_CONNECT(IRQ_GPIO_PORTD, CONFIG_GPIO_MCUX_PORTD_PRI,
gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_portd), 0);
irq_enable(IRQ_GPIO_PORTD);
return 0;
}
#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 = GPIOE,
.port_base = PORTE,
};
static struct gpio_mcux_data gpio_mcux_porte_data;
DEVICE_AND_API_INIT(gpio_mcux_porte, CONFIG_GPIO_MCUX_PORTE_NAME,
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)
{
IRQ_CONNECT(IRQ_GPIO_PORTE, CONFIG_GPIO_MCUX_PORTE_PRI,
gpio_mcux_port_isr, DEVICE_GET(gpio_mcux_porte), 0);
irq_enable(IRQ_GPIO_PORTE);
return 0;
}
#endif /* CONFIG_GPIO_MCUX_PORTE */