46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* Copyright (c) 2023 Antmicro <www.antmicro.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/drivers/pinctrl.h>
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/* ambiq-sdk includes */
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#include <am_mcu_apollo.h>
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static void pinctrl_configure_pin(const pinctrl_soc_pin_t *pin)
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{
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am_hal_gpio_pincfg_t pin_config = {0};
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pin_config.GP.cfg_b.uFuncSel = pin->alt_func;
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pin_config.GP.cfg_b.eGPInput = pin->input_enable ? AM_HAL_GPIO_PIN_INPUT_ENABLE
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: AM_HAL_GPIO_PIN_INPUT_NONE;
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pin_config.GP.cfg_b.eGPOutCfg = pin->push_pull ? AM_HAL_GPIO_PIN_OUTCFG_PUSHPULL
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: pin->open_drain ? AM_HAL_GPIO_PIN_OUTCFG_OPENDRAIN
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: pin->tristate ? AM_HAL_GPIO_PIN_OUTCFG_TRISTATE
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: AM_HAL_GPIO_PIN_OUTCFG_DISABLE;
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pin_config.GP.cfg_b.eDriveStrength = pin->drive_strength;
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pin_config.GP.cfg_b.uSlewRate = pin->slew_rate;
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pin_config.GP.cfg_b.uNCE = pin->iom_nce;
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if (pin->bias_pull_up) {
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pin_config.GP.cfg_b.ePullup = pin->ambiq_pull_up_ohms + AM_HAL_GPIO_PIN_PULLUP_1_5K;
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} else if (pin->bias_pull_down) {
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pin_config.GP.cfg_b.ePullup = AM_HAL_GPIO_PIN_PULLDOWN_50K;
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}
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am_hal_gpio_pinconfig(pin->pin_num, pin_config);
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}
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int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
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{
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ARG_UNUSED(reg);
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for (uint8_t i = 0U; i < pin_cnt; i++) {
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pinctrl_configure_pin(pins++);
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}
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return 0;
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}
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