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drivers: pinctrl: esp32s2: initial support

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add initial pinctrl driver support for ESP32S2.

Signed-off-by: Glauber Maroto Ferreira <glauber.ferreira@espressif.com>
This commit is contained in:
Glauber Maroto Ferreira 2022-02-14 16:06:09 -03:00 • committed by Carles Cufí
commit 2b44028777
2 changed files with 78 additions and 3 deletions
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6
drivers/pinctrl/Kconfig.esp32
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@ -4,8 +4,8 @@
DT_COMPAT_ESP32_PINCTRL := espressif,esp32-pinctrl DT_COMPAT_ESP32_PINCTRL := espressif,esp32-pinctrl
config PINCTRL_ESP32 config PINCTRL_ESP32
bool "Pin controller driver for ESP32 SoC" bool "ESP32 pin controller"
depends on SOC_ESP32 depends on SOC_ESP32 || SOC_ESP32S2
default $(dt_compat_enabled,$(DT_COMPAT_ESP32_PINCTRL)) default $(dt_compat_enabled,$(DT_COMPAT_ESP32_PINCTRL))
help help
Enable pin controller driver for ESP32 SoC Enables ESP32 pin controller

75
soc/xtensa/esp32s2/pinctrl_soc.h Normal file
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@ -0,0 +1,75 @@
/*
* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* ESP32S2 SoC specific helpers for pinctrl driver
*/
#ifndef ZEPHYR_SOC_XTENSA_ESP32S2_PINCTRL_SOC_H_
#define ZEPHYR_SOC_XTENSA_ESP32S2_PINCTRL_SOC_H_
#include <devicetree.h>
#include <zephyr/types.h>
#include <dt-bindings/pinctrl/esp-pinctrl-common.h>
/** @cond INTERNAL_HIDDEN */
/** Type for ESP32 pin. */
typedef struct pinctrl_soc_pin {
/** Pinmux settings (pin, direction and signal). */
uint32_t pinmux;
/** Pincfg settings (bias). */
uint32_t pincfg;
} pinctrl_soc_pin_t;
/**
* @brief Utility macro to initialize pinmux field in #pinctrl_pin_t.
*
* @param node_id Node identifier.
*/
#define Z_PINCTRL_ESP32_PINMUX_INIT(node_id) DT_PROP(node_id, pinmux)
/**
* @brief Utility macro to initialize pincfg field in #pinctrl_pin_t.
*
* @param node_id Node identifier.
*/
#define Z_PINCTRL_ESP32_PINCFG_INIT(node_id) \
(((ESP32_NO_PULL * DT_PROP(node_id, bias_disable)) << ESP32_PIN_BIAS_SHIFT) | \
((ESP32_PULL_UP * DT_PROP(node_id, bias_pull_up)) << ESP32_PIN_BIAS_SHIFT) | \
((ESP32_PULL_DOWN * DT_PROP(node_id, bias_pull_down)) << ESP32_PIN_BIAS_SHIFT) | \
((ESP32_PUSH_PULL * DT_PROP(node_id, drive_push_pull)) << ESP32_PIN_DRV_SHIFT) | \
((ESP32_OPEN_DRAIN * DT_PROP(node_id, drive_open_drain)) << ESP32_PIN_DRV_SHIFT) | \
((ESP32_PIN_OUT_HIGH * DT_PROP(node_id, output_high)) << ESP32_PIN_OUT_SHIFT) | \
((ESP32_PIN_OUT_LOW * DT_PROP(node_id, output_low)) << ESP32_PIN_OUT_SHIFT))
/**
* @brief Utility macro to initialize each pin.
*
* @param node_id Node identifier.
* @param state_prop State property name.
* @param idx State property entry index.
*/
#define Z_PINCTRL_STATE_PIN_INIT(node_id, state_prop, idx) \
{ .pinmux = Z_PINCTRL_ESP32_PINMUX_INIT( \
DT_PROP_BY_IDX(node_id, state_prop, idx)), \
.pincfg = Z_PINCTRL_ESP32_PINCFG_INIT( \
DT_PROP_BY_IDX(node_id, state_prop, idx)) },
/**
* @brief Utility macro to initialize state pins contained in a given property.
*
* @param node_id Node identifier.
* @param prop Property name describing state pins.
*/
#define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \
{DT_FOREACH_PROP_ELEM(node_id, prop, Z_PINCTRL_STATE_PIN_INIT)}
/** @endcond */
#endif /* ZEPHYR_SOC_XTENSA_ESP32S2_PINCTRL_SOC_H_ */