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/*
* (C) Copyright 2007-2009
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _4xx_i2c_h_
#define _4xx_i2c_h_
#define IIC_OK 0
#define IIC_NOK 1
#define IIC_NOK_LA 2 /* Lost arbitration */
#define IIC_NOK_ICT 3 /* Incomplete transfer */
#define IIC_NOK_XFRA 4 /* Transfer aborted */
#define IIC_NOK_DATA 5 /* No data in buffer */
#define IIC_NOK_TOUT 6 /* Transfer timeout */
#define IIC_TIMEOUT 1 /* 1 second */
struct ppc4xx_i2c {
u8 mdbuf;
u8 res1;
u8 sdbuf;
u8 res2;
u8 lmadr;
u8 hmadr;
u8 cntl;
u8 mdcntl;
u8 sts;
u8 extsts;
u8 lsadr;
u8 hsadr;
u8 clkdiv;
u8 intrmsk;
u8 xfrcnt;
u8 xtcntlss;
u8 directcntl;
u8 intr;
};
/* MDCNTL Register Bit definition */
#define IIC_MDCNTL_HSCL 0x01
#define IIC_MDCNTL_EUBS 0x02
#define IIC_MDCNTL_EINT 0x04
#define IIC_MDCNTL_ESM 0x08
#define IIC_MDCNTL_FSM 0x10
#define IIC_MDCNTL_EGC 0x20
#define IIC_MDCNTL_FMDB 0x40
#define IIC_MDCNTL_FSDB 0x80
/* CNTL Register Bit definition */
#define IIC_CNTL_PT 0x01
#define IIC_CNTL_READ 0x02
#define IIC_CNTL_CHT 0x04
#define IIC_CNTL_RPST 0x08
/* bit 2/3 for Transfer count*/
#define IIC_CNTL_AMD 0x40
#define IIC_CNTL_HMT 0x80
/* STS Register Bit definition */
#define IIC_STS_PT 0x01
#define IIC_STS_IRQA 0x02
#define IIC_STS_ERR 0x04
#define IIC_STS_SCMP 0x08
#define IIC_STS_MDBF 0x10
#define IIC_STS_MDBS 0x20
#define IIC_STS_SLPR 0x40
#define IIC_STS_SSS 0x80
/* EXTSTS Register Bit definition */
#define IIC_EXTSTS_XFRA 0x01
#define IIC_EXTSTS_ICT 0x02
#define IIC_EXTSTS_LA 0x04
#define IIC_EXTSTS_BCS_MASK 0x70
#define IIC_EXTSTS_BCS_FREE 0x40
/* XTCNTLSS Register Bit definition */
#define IIC_XTCNTLSS_SRST 0x01
#define IIC_XTCNTLSS_EPI 0x02
#define IIC_XTCNTLSS_SDBF 0x04
#define IIC_XTCNTLSS_SBDD 0x08
#define IIC_XTCNTLSS_SWS 0x10
#define IIC_XTCNTLSS_SWC 0x20
#define IIC_XTCNTLSS_SRS 0x40
#define IIC_XTCNTLSS_SRC 0x80
/* IICx_DIRECTCNTL register */
#define IIC_DIRCNTL_SDAC 0x08
#define IIC_DIRCNTL_SCC 0x04
#define IIC_DIRCNTL_MSDA 0x02
#define IIC_DIRCNTL_MSC 0x01
#define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f)
#endif
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