arch/m68k/include/asm/coldfire/dspi.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * MCF5227x Internal Memory Map
 *
 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 */

#ifndef __DSPI_H__
#define __DSPI_H__

/* DMA Serial Peripheral Interface (DSPI) */
typedef struct dspi {
	u32 mcr;	/* 0x00 */
	u32 resv0;	/* 0x04 */
	u32 tcr;	/* 0x08 */
	u32 ctar[8];	/* 0x0C - 0x28 */
	u32 sr;		/* 0x2C */
	u32 irsr;	/* 0x30 */
	u32 tfr;	/* 0x34 - PUSHR */
	u16 resv1;	/* 0x38 */
	u16 rfr;	/* 0x3A - POPR */
#ifdef CONFIG_MCF547x_8x
	u32 tfdr[4];	/* 0x3C */
	u8 resv2[0x30];	/* 0x40 */
	u32 rfdr[4];	/* 0x7C */
#else
	u32 tfdr[16];	/* 0x3C */
	u32 rfdr[16];	/* 0x7C */
#endif
} dspi_t;

/* Module configuration */
#define DSPI_MCR_MSTR			(0x80000000)
#define DSPI_MCR_CSCK			(0x40000000)
#define DSPI_MCR_DCONF(x)		(((x)&0x03)<<28)
#define DSPI_MCR_FRZ			(0x08000000)
#define DSPI_MCR_MTFE			(0x04000000)
#define DSPI_MCR_PCSSE			(0x02000000)
#define DSPI_MCR_ROOE			(0x01000000)
#define DSPI_MCR_CSIS7			(0x00800000)
#define DSPI_MCR_CSIS6			(0x00400000)
#define DSPI_MCR_CSIS5			(0x00200000)
#define DSPI_MCR_CSIS4			(0x00100000)
#define DSPI_MCR_CSIS3			(0x00080000)
#define DSPI_MCR_CSIS2			(0x00040000)
#define DSPI_MCR_CSIS1			(0x00020000)
#define DSPI_MCR_CSIS0			(0x00010000)
#define DSPI_MCR_MDIS			(0x00004000)
#define DSPI_MCR_DTXF			(0x00002000)
#define DSPI_MCR_DRXF			(0x00001000)
#define DSPI_MCR_CTXF			(0x00000800)
#define DSPI_MCR_CRXF			(0x00000400)
#define DSPI_MCR_SMPL_PT(x)		(((x)&0x03)<<8)
#define DSPI_MCR_HALT			(0x00000001)

/* Transfer count */
#define DSPI_TCR_SPI_TCNT(x)		(((x)&0x0000FFFF)<<16)

/* Clock and transfer attributes */
#define DSPI_CTAR_DBR			(0x80000000)
#define DSPI_CTAR_TRSZ(x)		(((x)&0x0F)<<27)
#define DSPI_CTAR_CPOL			(0x04000000)
#define DSPI_CTAR_CPHA			(0x02000000)
#define DSPI_CTAR_LSBFE			(0x01000000)
#define DSPI_CTAR_PCSSCK(x)		(((x)&0x03)<<22)
#define DSPI_CTAR_PCSSCK_7CLK		(0x00A00000)
#define DSPI_CTAR_PCSSCK_5CLK		(0x00800000)
#define DSPI_CTAR_PCSSCK_3CLK		(0x00400000)
#define DSPI_CTAR_PCSSCK_1CLK		(0x00000000)
#define DSPI_CTAR_PASC(x)		(((x)&0x03)<<20)
#define DSPI_CTAR_PASC_7CLK		(0x00300000)
#define DSPI_CTAR_PASC_5CLK		(0x00200000)
#define DSPI_CTAR_PASC_3CLK		(0x00100000)
#define DSPI_CTAR_PASC_1CLK		(0x00000000)
#define DSPI_CTAR_PDT(x)		(((x)&0x03)<<18)
#define DSPI_CTAR_PDT_7CLK		(0x000A0000)
#define DSPI_CTAR_PDT_5CLK		(0x00080000)
#define DSPI_CTAR_PDT_3CLK		(0x00040000)
#define DSPI_CTAR_PDT_1CLK		(0x00000000)
#define DSPI_CTAR_PBR(x)		(((x)&0x03)<<16)
#define DSPI_CTAR_PBR_7CLK		(0x00030000)
#define DSPI_CTAR_PBR_5CLK		(0x00020000)
#define DSPI_CTAR_PBR_3CLK		(0x00010000)
#define DSPI_CTAR_PBR_1CLK		(0x00000000)
#define DSPI_CTAR_CSSCK(x)		(((x)&0x0F)<<12)
#define DSPI_CTAR_ASC(x)		(((x)&0x0F)<<8)
#define DSPI_CTAR_DT(x)			(((x)&0x0F)<<4)
#define DSPI_CTAR_BR(x)			(((x)&0x0F))

/* Status */
#define DSPI_SR_TCF			(0x80000000)
#define DSPI_SR_TXRXS			(0x40000000)
#define DSPI_SR_EOQF			(0x10000000)
#define DSPI_SR_TFUF			(0x08000000)
#define DSPI_SR_TFFF			(0x02000000)
#define DSPI_SR_RFOF			(0x00080000)
#define DSPI_SR_RFDF			(0x00020000)
#define DSPI_SR_TXCTR(x)		(((x)&0x0F)<<12)
#define DSPI_SR_TXPTR(x)		(((x)&0x0F)<<8)
#define DSPI_SR_RXCTR(x)		(((x)&0x0F)<<4)
#define DSPI_SR_RXPTR(x)		(((x)&0x0F))

/* DMA/interrupt request selct and enable */
#define DSPI_IRSR_TCFE			(0x80000000)
#define DSPI_IRSR_EOQFE			(0x10000000)
#define DSPI_IRSR_TFUFE			(0x08000000)
#define DSPI_IRSR_TFFFE			(0x02000000)
#define DSPI_IRSR_TFFFS			(0x01000000)
#define DSPI_IRSR_RFOFE			(0x00080000)
#define DSPI_IRSR_RFDFE			(0x00020000)
#define DSPI_IRSR_RFDFS			(0x00010000)

/* Transfer control - 32-bit access */
#define DSPI_TFR_CONT			(0x80000000)
#define DSPI_TFR_CTAS(x)		(((x)&0x07)<<12)
#define DSPI_TFR_EOQ			(0x08000000)
#define DSPI_TFR_CTCNT			(0x04000000)
#define DSPI_TFR_CS7			(0x00800000)
#define DSPI_TFR_CS6			(0x00400000)
#define DSPI_TFR_CS5			(0x00200000)
#define DSPI_TFR_CS4			(0x00100000)
#define DSPI_TFR_CS3			(0x00080000)
#define DSPI_TFR_CS2			(0x00040000)
#define DSPI_TFR_CS1			(0x00020000)
#define DSPI_TFR_CS0			(0x00010000)

/* Transfer Fifo */
#define DSPI_TFR_TXDATA(x)		(((x)&0xFFFF))

/* Bit definitions and macros for DRFR */
#define DSPI_RFR_RXDATA(x)		(((x)&0xFFFF))

/* Bit definitions and macros for DTFDR group */
#define DSPI_TFDR_TXDATA(x)		(((x)&0x0000FFFF))
#define DSPI_TFDR_TXCMD(x)		(((x)&0x0000FFFF)<<16)

/* Bit definitions and macros for DRFDR group */
#define DSPI_RFDR_RXDATA(x)		(((x)&0x0000FFFF))

/* Architecture-related operations */
void dspi_chip_select(int cs);
void dspi_chip_unselect(int cs);

#endif				/* __DSPI_H__ */