blob: d2c5bbe29c28d2015cdb8494f78adba2014a8df8 [file] [log] [blame]
/*
* Copyright (c) 2017 Intel Corporation
* Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT espressif_esp32_pinmux
/* Include esp-idf headers first to avoid redefining BIT() macro */
#include <soc/soc.h>
#include <hal/gpio_types.h>
#include <hal/gpio_ll.h>
#include <errno.h>
#include <drivers/pinmux.h>
static int pinmux_set(const struct device *dev, uint32_t pin, uint32_t func)
{
ARG_UNUSED(dev);
if ((func > PINMUX_FUNC_G) || (pin >= GPIO_NUM_MAX)) {
return -EINVAL;
}
gpio_ll_iomux_func_sel(GPIO_PIN_MUX_REG[pin], func);
return 0;
}
static int pinmux_get(const struct device *dev, uint32_t pin, uint32_t *func)
{
ARG_UNUSED(dev);
if (pin >= GPIO_NUM_MAX) {
return -EINVAL;
}
*func = REG_GET_FIELD(GPIO_PIN_MUX_REG[pin], MCU_SEL);
return 0;
}
static int pinmux_pullup(const struct device *dev, uint32_t pin, uint8_t func)
{
ARG_UNUSED(dev);
switch (func) {
case PINMUX_PULLUP_DISABLE:
gpio_ll_pullup_dis(&GPIO, pin);
break;
case PINMUX_PULLUP_ENABLE:
gpio_ll_pullup_en(&GPIO, pin);
break;
default:
return -EINVAL;
}
return 0;
}
static int pinmux_input(const struct device *dev, uint32_t pin, uint8_t func)
{
ARG_UNUSED(dev);
switch (func) {
case PINMUX_INPUT_ENABLED:
gpio_ll_input_enable(&GPIO, pin);
break;
case PINMUX_OUTPUT_ENABLED:
gpio_ll_output_enable(&GPIO, pin);
break;
default:
return -EINVAL;
}
return 0;
}
static struct pinmux_driver_api api_funcs = {
.set = pinmux_set,
.get = pinmux_get,
.pullup = pinmux_pullup,
.input = pinmux_input
};
static int pinmux_initialize(const struct device *dev)
{
ARG_UNUSED(dev);
return 0;
}
/* Initialize using PRE_KERNEL_1 priority so that GPIO can use the pin
* mux driver.
*/
DEVICE_DT_INST_DEFINE(0, &pinmux_initialize,
NULL, NULL, NULL,
PRE_KERNEL_2, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
&api_funcs);