| Stefan Roese | 79b2d0b | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 1 | /* |
| Stefan Roese | eb5eb2b | 2009-11-19 14:03:17 +0100 | [diff] [blame] | 2 | * (C) Copyright 2007-2009 |
| Stefan Roese | 79b2d0b | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 3 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 4 | * |
| Wolfgang Denk | 1a45966 | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| Stefan Roese | 79b2d0b | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #ifndef _4xx_i2c_h_ |
| 9 | #define _4xx_i2c_h_ |
| 10 | |
| 11 | #define IIC_OK 0 |
| 12 | #define IIC_NOK 1 |
| 13 | #define IIC_NOK_LA 2 /* Lost arbitration */ |
| 14 | #define IIC_NOK_ICT 3 /* Incomplete transfer */ |
| 15 | #define IIC_NOK_XFRA 4 /* Transfer aborted */ |
| 16 | #define IIC_NOK_DATA 5 /* No data in buffer */ |
| 17 | #define IIC_NOK_TOUT 6 /* Transfer timeout */ |
| 18 | |
| 19 | #define IIC_TIMEOUT 1 /* 1 second */ |
| 20 | |
| Stefan Roese | eb5eb2b | 2009-11-19 14:03:17 +0100 | [diff] [blame] | 21 | struct ppc4xx_i2c { |
| 22 | u8 mdbuf; |
| 23 | u8 res1; |
| 24 | u8 sdbuf; |
| 25 | u8 res2; |
| 26 | u8 lmadr; |
| 27 | u8 hmadr; |
| 28 | u8 cntl; |
| 29 | u8 mdcntl; |
| 30 | u8 sts; |
| 31 | u8 extsts; |
| 32 | u8 lsadr; |
| 33 | u8 hsadr; |
| 34 | u8 clkdiv; |
| 35 | u8 intrmsk; |
| 36 | u8 xfrcnt; |
| 37 | u8 xtcntlss; |
| 38 | u8 directcntl; |
| 39 | u8 intr; |
| 40 | }; |
| Stefan Roese | 79b2d0b | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 41 | |
| 42 | /* MDCNTL Register Bit definition */ |
| 43 | #define IIC_MDCNTL_HSCL 0x01 |
| 44 | #define IIC_MDCNTL_EUBS 0x02 |
| 45 | #define IIC_MDCNTL_EINT 0x04 |
| 46 | #define IIC_MDCNTL_ESM 0x08 |
| 47 | #define IIC_MDCNTL_FSM 0x10 |
| 48 | #define IIC_MDCNTL_EGC 0x20 |
| 49 | #define IIC_MDCNTL_FMDB 0x40 |
| 50 | #define IIC_MDCNTL_FSDB 0x80 |
| 51 | |
| 52 | /* CNTL Register Bit definition */ |
| 53 | #define IIC_CNTL_PT 0x01 |
| 54 | #define IIC_CNTL_READ 0x02 |
| 55 | #define IIC_CNTL_CHT 0x04 |
| 56 | #define IIC_CNTL_RPST 0x08 |
| 57 | /* bit 2/3 for Transfer count*/ |
| 58 | #define IIC_CNTL_AMD 0x40 |
| 59 | #define IIC_CNTL_HMT 0x80 |
| 60 | |
| 61 | /* STS Register Bit definition */ |
| 62 | #define IIC_STS_PT 0x01 |
| 63 | #define IIC_STS_IRQA 0x02 |
| 64 | #define IIC_STS_ERR 0x04 |
| 65 | #define IIC_STS_SCMP 0x08 |
| 66 | #define IIC_STS_MDBF 0x10 |
| 67 | #define IIC_STS_MDBS 0x20 |
| 68 | #define IIC_STS_SLPR 0x40 |
| 69 | #define IIC_STS_SSS 0x80 |
| 70 | |
| 71 | /* EXTSTS Register Bit definition */ |
| 72 | #define IIC_EXTSTS_XFRA 0x01 |
| 73 | #define IIC_EXTSTS_ICT 0x02 |
| 74 | #define IIC_EXTSTS_LA 0x04 |
| Dirk Eibach | b97cd68 | 2014-10-29 15:56:44 +0100 | [diff] [blame] | 75 | #define IIC_EXTSTS_BCS_MASK 0x70 |
| 76 | #define IIC_EXTSTS_BCS_FREE 0x40 |
| Stefan Roese | 79b2d0b | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 77 | |
| 78 | /* XTCNTLSS Register Bit definition */ |
| 79 | #define IIC_XTCNTLSS_SRST 0x01 |
| 80 | #define IIC_XTCNTLSS_EPI 0x02 |
| 81 | #define IIC_XTCNTLSS_SDBF 0x04 |
| 82 | #define IIC_XTCNTLSS_SBDD 0x08 |
| 83 | #define IIC_XTCNTLSS_SWS 0x10 |
| 84 | #define IIC_XTCNTLSS_SWC 0x20 |
| 85 | #define IIC_XTCNTLSS_SRS 0x40 |
| 86 | #define IIC_XTCNTLSS_SRC 0x80 |
| 87 | |
| 88 | /* IICx_DIRECTCNTL register */ |
| 89 | #define IIC_DIRCNTL_SDAC 0x08 |
| 90 | #define IIC_DIRCNTL_SCC 0x04 |
| 91 | #define IIC_DIRCNTL_MSDA 0x02 |
| 92 | #define IIC_DIRCNTL_MSC 0x01 |
| 93 | |
| 94 | #define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f) |
| 95 | #endif |