74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* Copyright (c) 2023 Nuvoton Technology Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT nuvoton_numaker_pinctrl
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#include <zephyr/drivers/pinctrl.h>
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#include <NuMicro.h>
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/* Get mfp_base, it should be == (&SYS->GPA_MFP0) */
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#define MFP_BASE DT_INST_REG_ADDR_BY_NAME(0, mfp)
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#define MFOS_BASE DT_INST_REG_ADDR_BY_NAME(0, mfos)
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#define GPA_BASE DT_REG_ADDR(DT_NODELABEL(gpioa))
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#define GPIO_SIZE DT_REG_SIZE(DT_NODELABEL(gpioa))
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#define SLEWCTL_PIN_SHIFT(pin_idx) ((pin_idx) * 2)
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#define SLEWCTL_MASK(pin_idx) (3 << SLEWCTL_PIN_SHIFT(pin_idx))
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static void gpio_configure(const pinctrl_soc_pin_t *pin, uint8_t port_idx, uint8_t pin_idx)
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{
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GPIO_T *port;
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port = (GPIO_T *)(GPA_BASE + port_idx * GPIO_SIZE);
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port->SMTEN = (port->SMTEN & ~BIT(pin_idx)) |
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((pin->schmitt_enable ? 1 : 0) << pin_idx);
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port->SLEWCTL = (port->SLEWCTL & ~SLEWCTL_MASK(pin_idx)) |
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(pin->slew_rate << SLEWCTL_PIN_SHIFT(pin_idx));
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}
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/**
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* Configure pin multi-function
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*/
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static void configure_pin(const pinctrl_soc_pin_t *pin)
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{
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uint32_t pin_mux = pin->pin_mux;
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uint8_t pin_index = PIN_INDEX(pin_mux);
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uint8_t port_index = PORT_INDEX(pin_mux);
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uint32_t mfp_cfg = MFP_CFG(pin_mux);
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uint32_t *GPx_MFPx = ((uint32_t *)MFP_BASE) + port_index * 4 + (pin_index / 4);
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uint32_t *GPx_MFOSx = ((uint32_t *)MFOS_BASE) + port_index;
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uint32_t pinMask = NU_MFP_MASK(pin_index);
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/*
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* E.g.: SYS->GPA_MFP0 = (SYS->GPA_MFP0 & (~SYS_GPA_MFP0_PA0MFP_Msk) ) |
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* SYS_GPA_MFP0_PA0MFP_SC0_CD;
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*/
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*GPx_MFPx = (*GPx_MFPx & (~pinMask)) | mfp_cfg;
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if (pin->open_drain != 0) {
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*GPx_MFOSx |= BIT(pin_index);
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} else {
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*GPx_MFOSx &= ~BIT(pin_index);
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}
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gpio_configure(pin, port_index, pin_index);
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}
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/* Pinctrl API implementation */
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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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/* Configure all peripheral devices' properties here. */
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for (uint8_t i = 0U; i < pin_cnt; i++) {
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configure_pin(&pins[i]);
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}
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return 0;
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}
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