79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*
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* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* ESP32 SoC specific helpers for pinctrl driver
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*/
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#ifndef ZEPHYR_SOC_XTENSA_ESP32_PINCTRL_SOC_H_
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#define ZEPHYR_SOC_XTENSA_ESP32_PINCTRL_SOC_H_
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#include <zephyr/devicetree.h>
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#include <zephyr/types.h>
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#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
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/** @cond INTERNAL_HIDDEN */
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/** Type for ESP32 pin. */
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typedef struct pinctrl_soc_pin {
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/** Pinmux settings (pin, direction and signal). */
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uint32_t pinmux;
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/** Pincfg settings (bias). */
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uint32_t pincfg;
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} pinctrl_soc_pin_t;
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/**
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* @brief Utility macro to initialize pinmux field in #pinctrl_pin_t.
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*
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* @param node_id Node identifier.
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*/
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#define Z_PINCTRL_ESP32_PINMUX_INIT(node_id, prop, idx) DT_PROP_BY_IDX(node_id, prop, idx)
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/**
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* @brief Utility macro to initialize pincfg field in #pinctrl_pin_t.
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*
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* @param node_id Node identifier.
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*/
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#define Z_PINCTRL_ESP32_PINCFG_INIT(node_id) \
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(((ESP32_NO_PULL * DT_PROP(node_id, bias_disable)) << ESP32_PIN_BIAS_SHIFT) | \
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((ESP32_PULL_UP * DT_PROP(node_id, bias_pull_up)) << ESP32_PIN_BIAS_SHIFT) | \
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((ESP32_PULL_DOWN * DT_PROP(node_id, bias_pull_down)) << ESP32_PIN_BIAS_SHIFT) | \
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((ESP32_PUSH_PULL * DT_PROP(node_id, drive_push_pull)) << ESP32_PIN_DRV_SHIFT) | \
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((ESP32_OPEN_DRAIN * DT_PROP(node_id, drive_open_drain)) << ESP32_PIN_DRV_SHIFT) | \
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((ESP32_PIN_OUT_HIGH * DT_PROP(node_id, output_high)) << ESP32_PIN_OUT_SHIFT) | \
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((ESP32_PIN_OUT_LOW * DT_PROP(node_id, output_low)) << ESP32_PIN_OUT_SHIFT) | \
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((ESP32_PIN_OUT_EN * DT_PROP(node_id, output_enable)) << ESP32_PIN_EN_DIR_SHIFT) | \
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((ESP32_PIN_IN_EN * DT_PROP(node_id, input_enable)) << ESP32_PIN_EN_DIR_SHIFT))
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/**
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* @brief Utility macro to initialize each pin.
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*
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* @param node_id Node identifier.
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* @param prop Property name.
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* @param idx Property entry index.
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*/
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#define Z_PINCTRL_STATE_PIN_INIT(node_id, prop, idx) \
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{.pinmux = Z_PINCTRL_ESP32_PINMUX_INIT(node_id, prop, idx), \
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.pincfg = Z_PINCTRL_ESP32_PINCFG_INIT(node_id)},
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/**
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* @brief Utility macro to initialize state pins contained in a given property.
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*
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* @param node_id Node identifier.
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* @param prop Property name describing state pins.
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*/
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#define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \
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{ \
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DT_FOREACH_CHILD_VARGS(DT_PHANDLE(node_id, prop), DT_FOREACH_PROP_ELEM, pinmux, \
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Z_PINCTRL_STATE_PIN_INIT) \
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}
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/** @endcond */
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#endif /* ZEPHYR_SOC_XTENSA_ESP32_PINCTRL_SOC_H_ */
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