sh_spi.h
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/*
* SH SPI driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
*
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef __SH_SPI_H__
#define __SH_SPI_H__
#include <spi.h>
struct sh_spi_regs {
unsigned long tbr_rbr;
unsigned long resv1;
unsigned long cr1;
unsigned long resv2;
unsigned long cr2;
unsigned long resv3;
unsigned long cr3;
unsigned long resv4;
unsigned long cr4;
};
/* CR1 */
#define SH_SPI_TBE 0x80
#define SH_SPI_TBF 0x40
#define SH_SPI_RBE 0x20
#define SH_SPI_RBF 0x10
#define SH_SPI_PFONRD 0x08
#define SH_SPI_SSDB 0x04
#define SH_SPI_SSD 0x02
#define SH_SPI_SSA 0x01
/* CR2 */
#define SH_SPI_RSTF 0x80
#define SH_SPI_LOOPBK 0x40
#define SH_SPI_CPOL 0x20
#define SH_SPI_CPHA 0x10
#define SH_SPI_L1M0 0x08
/* CR3 */
#define SH_SPI_MAX_BYTE 0xFF
/* CR4 */
#define SH_SPI_TBEI 0x80
#define SH_SPI_TBFI 0x40
#define SH_SPI_RBEI 0x20
#define SH_SPI_RBFI 0x10
#define SH_SPI_SSS1 0x08
#define SH_SPI_WPABRT 0x04
#define SH_SPI_SSS0 0x01
#define SH_SPI_FIFO_SIZE 32
#define SH_SPI_NUM_CS 4
struct sh_spi {
struct spi_slave slave;
struct sh_spi_regs *regs;
};
static inline struct sh_spi *to_sh_spi(struct spi_slave *slave)
{
return container_of(slave, struct sh_spi, slave);
}
#endif