67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
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/*
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* Copyright 2022 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SPI_SPI_NXP_S32_H_
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#define ZEPHYR_DRIVERS_SPI_SPI_NXP_S32_H_
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#include <zephyr/drivers/spi.h>
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#include <zephyr/logging/log.h>
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#define LOG_LEVEL CONFIG_SPI_LOG_LEVEL
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LOG_MODULE_REGISTER(spi_nxp_s32);
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#include "spi_context.h"
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#include <Spi_Ip.h>
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#define SPI_NXP_S32_NUM_PRESCALER 4U
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#define SPI_NXP_S32_NUM_SCALER 16U
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/* Modified SPI transfer format is not supported,
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* the maximum baudrate is 25Mhz.
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*/
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#define SPI_NXP_S32_MIN_FREQ 100000U
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#define SPI_NXP_S32_MAX_FREQ 25000000U
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#define SPI_NXP_S32_BYTE_PER_FRAME(frame_size) \
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(frame_size <= 8U) ? 1U : ((frame_size <= 16U) ? 2U : 4U)
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#define SPI_NXP_S32_MAX_BYTES_PER_PACKAGE(bytes_per_frame) \
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((UINT16_MAX / bytes_per_frame) * bytes_per_frame)
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struct spi_nxp_s32_baudrate_param {
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uint8_t scaler;
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uint8_t prescaler;
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uint32_t frequency;
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};
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struct spi_nxp_s32_data {
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uint8_t bytes_per_frame;
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uint32_t transfer_len;
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struct spi_context ctx;
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Spi_Ip_ExternalDeviceType transfer_cfg;
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Spi_Ip_DeviceParamsType transfer_params;
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};
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struct spi_nxp_s32_config {
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uint8_t instance;
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uint8_t num_cs;
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uint32_t clock_frequency;
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uint32_t sck_cs_delay;
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uint32_t cs_sck_delay;
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uint32_t cs_cs_delay;
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Spi_Ip_ConfigType *spi_hw_cfg;
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const struct pinctrl_dev_config *pincfg;
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#ifdef CONFIG_NXP_S32_SPI_INTERRUPT
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Spi_Ip_CallbackType cb;
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void (*irq_config_func)(const struct device *dev);
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#endif /* CONFIG_NXP_S32_SPI_INTERRUPT */
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};
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#endif /* ZEPHYR_DRIVERS_SPI_SPI_NXP_S32_H_ */
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