diff options
Diffstat (limited to 'roms/u-boot/arch/powerpc/include/asm/ppc4xx-i2c.h')
| -rw-r--r-- | roms/u-boot/arch/powerpc/include/asm/ppc4xx-i2c.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/roms/u-boot/arch/powerpc/include/asm/ppc4xx-i2c.h b/roms/u-boot/arch/powerpc/include/asm/ppc4xx-i2c.h new file mode 100644 index 00000000..09189cf1 --- /dev/null +++ b/roms/u-boot/arch/powerpc/include/asm/ppc4xx-i2c.h @@ -0,0 +1,93 @@ +/* + * (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 + +/* 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 |