87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
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/*
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* Copyright (c) 2006-2020, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-06-16 bigmagic first version
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*/
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#ifndef __DRV_SPI_H__
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#define __DRV_SPI_H__
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#include "drv_gpio.h"
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#define SPI_REG_CS(BASE) HWREG32(BASE + 0x00)
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#define SPI_REG_FIFO(BASE) HWREG32(BASE + 0x04)
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#define SPI_REG_CLK(BASE) HWREG32(BASE + 0x08)
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#define SPI_REG_DLEN(BASE) HWREG32(BASE + 0x0C)
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#define SPI_REG_LTOH(BASE) HWREG32(BASE + 0x10)
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#define SPI_REG_DC(BASE) HWREG32(BASE + 0x14)
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/* CS Register */
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#define SPI_CS_LOSSI_LONG_32BIT (1 << 25)
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#define SPI_CS_LOSSI_DMA_MODE (1 << 24)
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#define SPI_CS_CSPOL2 (1 << 23)
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#define SPI_CS_CSPOL1 (1 << 22)
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#define SPI_CS_CSPOL0 (1 << 21)
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#define SPI_CS_RX_FIFO_FULL (1 << 20)
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#define SPI_CS_RX_FIFO_3_QUARTER (1 << 19)
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#define SPI_CS_TX_DATA (1 << 18)
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#define SPI_CS_RX_DATA (1 << 17)
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#define SPI_CS_DONE (1 << 16)
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#define SPI_CS_LOSSI_EN (1 << 13)
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#define SPI_CS_READ_EN (1 << 12)
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#define SPI_CS_AUTO_CS (1 << 11)
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#define SPI_CS_INTR_RXR (1 << 10)
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#define SPI_CS_INTR_DONE (1 << 9)
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#define SPI_CS_DMA_EN (1 << 8)
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#define SPI_CS_TA (1 << 7)
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#define SPI_CS_CSPOL_HIGH (1 << 6)
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#define SPI_CS_CLEAR_RX (2 << 4)
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#define SPI_CS_CLEAR_TX (1 << 4)
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#define SPI_CS_CPOL (1 << 3)
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#define SPI_CS_CPHA (1 << 2)
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#define SPI_CS_CHIP_SELECT_2 (2 << 0)
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#define SPI_CS_CHIP_SELECT_1 (1 << 0)
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#define SPI_CS_CHIP_SELECT_0 (0 << 0)
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struct raspi_spi_hw_config
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{
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rt_uint8_t spi_num;
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GPIO_PIN sclk_pin;
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GPIO_FUNC sclk_mode;
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GPIO_PIN mosi_pin;
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GPIO_FUNC mosi_mode;
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GPIO_PIN miso_pin;
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GPIO_FUNC miso_mode;
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#if defined (BSP_USING_SPI0_DEVICE0) || defined (BSP_USING_SPI1_DEVICE0)
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GPIO_PIN ce0_pin;
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GPIO_FUNC ce0_mode;
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#endif
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#if defined (BSP_USING_SPI0_DEVICE1) || defined (BSP_USING_SPI1_DEVICE1)
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GPIO_PIN ce1_pin;
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GPIO_FUNC ce1_mode;
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#endif
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#if defined (BSP_USING_SPI1_DEVICE2)
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GPIO_PIN ce2_pin;
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GPIO_FUNC ce2_mode;
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#endif
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rt_ubase_t hw_base;
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};
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struct raspi_spi_device
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{
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char *device_name;
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struct rt_spi_bus *spi_bus;
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struct rt_spi_device *spi_device;
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struct raspi_spi_hw_config *spi_hw_config;
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GPIO_PIN cs_pin;
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};
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int rt_hw_spi_init(void);
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#endif
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