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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-06-16 bigmagic first version
*/
#ifndef __DRV_SPI_H__
#define __DRV_SPI_H__
#include "drv_gpio.h"
#define SPI_REG_CS(BASE) HWREG32(BASE + 0x00)
#define SPI_REG_FIFO(BASE) HWREG32(BASE + 0x04)
#define SPI_REG_CLK(BASE) HWREG32(BASE + 0x08)
#define SPI_REG_DLEN(BASE) HWREG32(BASE + 0x0C)
#define SPI_REG_LTOH(BASE) HWREG32(BASE + 0x10)
#define SPI_REG_DC(BASE) HWREG32(BASE + 0x14)
/* CS Register */
#define SPI_CS_LOSSI_LONG_32BIT (1 << 25)
#define SPI_CS_LOSSI_DMA_MODE (1 << 24)
#define SPI_CS_CSPOL2 (1 << 23)
#define SPI_CS_CSPOL1 (1 << 22)
#define SPI_CS_CSPOL0 (1 << 21)
#define SPI_CS_RX_FIFO_FULL (1 << 20)
#define SPI_CS_RX_FIFO_3_QUARTER (1 << 19)
#define SPI_CS_TX_DATA (1 << 18)
#define SPI_CS_RX_DATA (1 << 17)
#define SPI_CS_DONE (1 << 16)
#define SPI_CS_LOSSI_EN (1 << 13)
#define SPI_CS_READ_EN (1 << 12)
#define SPI_CS_AUTO_CS (1 << 11)
#define SPI_CS_INTR_RXR (1 << 10)
#define SPI_CS_INTR_DONE (1 << 9)
#define SPI_CS_DMA_EN (1 << 8)
#define SPI_CS_TA (1 << 7)
#define SPI_CS_CSPOL_HIGH (1 << 6)
#define SPI_CS_CLEAR_RX (2 << 4)
#define SPI_CS_CLEAR_TX (1 << 4)
#define SPI_CS_CPOL (1 << 3)
#define SPI_CS_CPHA (1 << 2)
#define SPI_CS_CHIP_SELECT_2 (2 << 0)
#define SPI_CS_CHIP_SELECT_1 (1 << 0)
#define SPI_CS_CHIP_SELECT_0 (0 << 0)
struct raspi_spi_hw_config
{
rt_uint8_t spi_num;
GPIO_PIN sclk_pin;
GPIO_FUNC sclk_mode;
GPIO_PIN mosi_pin;
GPIO_FUNC mosi_mode;
GPIO_PIN miso_pin;
GPIO_FUNC miso_mode;
#if defined (BSP_USING_SPI0_DEVICE0) || defined (BSP_USING_SPI1_DEVICE0)
GPIO_PIN ce0_pin;
GPIO_FUNC ce0_mode;
#endif
#if defined (BSP_USING_SPI0_DEVICE1) || defined (BSP_USING_SPI1_DEVICE1)
GPIO_PIN ce1_pin;
GPIO_FUNC ce1_mode;
#endif
#if defined (BSP_USING_SPI1_DEVICE2)
GPIO_PIN ce2_pin;
GPIO_FUNC ce2_mode;
#endif
rt_ubase_t hw_base;
};
struct raspi_spi_device
{
char *device_name;
struct rt_spi_bus *spi_bus;
struct rt_spi_device *spi_device;
struct raspi_spi_hw_config *spi_hw_config;
GPIO_PIN cs_pin;
};
int rt_hw_spi_init(void);
#endif
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