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drivers: pinctrl: Added pinctrl driver for RPi Pico

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Added a pinctrl driver for the Raspberry Pi Pico series

Signed-off-by: Yonatan Schachter <yonatan.schachter@gmail.com>
This commit is contained in:
Yonatan Schachter 2021-11-30 00:29:09 +02:00 • committed by Carles Cufí
commit fd59038312
10 changed files with 315 additions and 0 deletions
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34
drivers/pinctrl/pinctrl_rpi_pico.c Normal file
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/*
* Copyright (c) 2021 Yonatan Schachter
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <drivers/pinctrl.h>
/* pico-sdk includes */
#include <hardware/gpio.h>
static void pinctrl_configure_pin(const pinctrl_soc_pin_t *pin)
{
gpio_init(pin->pin_num);
gpio_set_function(pin->pin_num, pin->alt_func);
gpio_set_pulls(pin->pin_num, pin->pullup, pin->pulldown);
gpio_set_drive_strength(pin->pin_num, pin->drive_strength);
gpio_set_slew_rate(pin->pin_num, (pin->slew_rate ?
GPIO_SLEW_RATE_FAST : GPIO_SLEW_RATE_SLOW));
gpio_set_input_hysteresis_enabled(pin->pin_num, pin->schmitt_enable);
gpio_set_input_enabled(pin->pin_num, pin->input_enable);
}
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
uintptr_t reg)
{
ARG_UNUSED(reg);
for (uint8_t i = 0U; i < pin_cnt; i++) {
pinctrl_configure_pin(pins++);
}
return 0;
}