| Stefan Roese | d07117e | 2007-02-20 10:27:08 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2007 |
| 3 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #ifndef _4xx_i2c_h_ |
| 25 | #define _4xx_i2c_h_ |
| 26 | |
| 27 | #define IIC_OK 0 |
| 28 | #define IIC_NOK 1 |
| 29 | #define IIC_NOK_LA 2 /* Lost arbitration */ |
| 30 | #define IIC_NOK_ICT 3 /* Incomplete transfer */ |
| 31 | #define IIC_NOK_XFRA 4 /* Transfer aborted */ |
| 32 | #define IIC_NOK_DATA 5 /* No data in buffer */ |
| 33 | #define IIC_NOK_TOUT 6 /* Transfer timeout */ |
| 34 | |
| 35 | #define IIC_TIMEOUT 1 /* 1 second */ |
| 36 | |
| 37 | #if defined(CONFIG_I2C_MULTI_BUS) |
| 38 | #define I2C_BUS_OFFS (i2c_bus_num * 0x100) |
| 39 | #else |
| 40 | #define I2C_BUS_OFFS (0x000) |
| 41 | #endif /* CONFIG_I2C_MULTI_BUS */ |
| 42 | |
| 43 | #if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ |
| 44 | defined(CONFIG_440EPX) || defined(CONFIG_440GRX) |
| 45 | #define I2C_BASE_ADDR (CFG_PERIPHERAL_BASE + 0x00000700 + I2C_BUS_OFFS) |
| 46 | #elif defined(CONFIG_440) |
| 47 | /* all remaining 440 variants */ |
| 48 | #define I2C_BASE_ADDR (CFG_PERIPHERAL_BASE + 0x00000400 + I2C_BUS_OFFS) |
| 49 | #else |
| 50 | /* all 405 variants */ |
| 51 | #define I2C_BASE_ADDR (0xEF600500 + I2C_BUS_OFFS) |
| 52 | #endif |
| 53 | |
| 54 | #define I2C_REGISTERS_BASE_ADDRESS I2C_BASE_ADDR |
| 55 | #define IIC_MDBUF (I2C_REGISTERS_BASE_ADDRESS+IICMDBUF) |
| 56 | #define IIC_SDBUF (I2C_REGISTERS_BASE_ADDRESS+IICSDBUF) |
| 57 | #define IIC_LMADR (I2C_REGISTERS_BASE_ADDRESS+IICLMADR) |
| 58 | #define IIC_HMADR (I2C_REGISTERS_BASE_ADDRESS+IICHMADR) |
| 59 | #define IIC_CNTL (I2C_REGISTERS_BASE_ADDRESS+IICCNTL) |
| 60 | #define IIC_MDCNTL (I2C_REGISTERS_BASE_ADDRESS+IICMDCNTL) |
| 61 | #define IIC_STS (I2C_REGISTERS_BASE_ADDRESS+IICSTS) |
| 62 | #define IIC_EXTSTS (I2C_REGISTERS_BASE_ADDRESS+IICEXTSTS) |
| 63 | #define IIC_LSADR (I2C_REGISTERS_BASE_ADDRESS+IICLSADR) |
| 64 | #define IIC_HSADR (I2C_REGISTERS_BASE_ADDRESS+IICHSADR) |
| 65 | #define IIC_CLKDIV (I2C_REGISTERS_BASE_ADDRESS+IICCLKDIV) |
| 66 | #define IIC_INTRMSK (I2C_REGISTERS_BASE_ADDRESS+IICINTRMSK) |
| 67 | #define IIC_XFRCNT (I2C_REGISTERS_BASE_ADDRESS+IICXFRCNT) |
| 68 | #define IIC_XTCNTLSS (I2C_REGISTERS_BASE_ADDRESS+IICXTCNTLSS) |
| 69 | #define IIC_DIRECTCNTL (I2C_REGISTERS_BASE_ADDRESS+IICDIRECTCNTL) |
| 70 | |
| 71 | /* MDCNTL Register Bit definition */ |
| 72 | #define IIC_MDCNTL_HSCL 0x01 |
| 73 | #define IIC_MDCNTL_EUBS 0x02 |
| 74 | #define IIC_MDCNTL_EINT 0x04 |
| 75 | #define IIC_MDCNTL_ESM 0x08 |
| 76 | #define IIC_MDCNTL_FSM 0x10 |
| 77 | #define IIC_MDCNTL_EGC 0x20 |
| 78 | #define IIC_MDCNTL_FMDB 0x40 |
| 79 | #define IIC_MDCNTL_FSDB 0x80 |
| 80 | |
| 81 | /* CNTL Register Bit definition */ |
| 82 | #define IIC_CNTL_PT 0x01 |
| 83 | #define IIC_CNTL_READ 0x02 |
| 84 | #define IIC_CNTL_CHT 0x04 |
| 85 | #define IIC_CNTL_RPST 0x08 |
| 86 | /* bit 2/3 for Transfer count*/ |
| 87 | #define IIC_CNTL_AMD 0x40 |
| 88 | #define IIC_CNTL_HMT 0x80 |
| 89 | |
| 90 | /* STS Register Bit definition */ |
| 91 | #define IIC_STS_PT 0x01 |
| 92 | #define IIC_STS_IRQA 0x02 |
| 93 | #define IIC_STS_ERR 0x04 |
| 94 | #define IIC_STS_SCMP 0x08 |
| 95 | #define IIC_STS_MDBF 0x10 |
| 96 | #define IIC_STS_MDBS 0x20 |
| 97 | #define IIC_STS_SLPR 0x40 |
| 98 | #define IIC_STS_SSS 0x80 |
| 99 | |
| 100 | /* EXTSTS Register Bit definition */ |
| 101 | #define IIC_EXTSTS_XFRA 0x01 |
| 102 | #define IIC_EXTSTS_ICT 0x02 |
| 103 | #define IIC_EXTSTS_LA 0x04 |
| 104 | |
| 105 | /* XTCNTLSS Register Bit definition */ |
| 106 | #define IIC_XTCNTLSS_SRST 0x01 |
| 107 | #define IIC_XTCNTLSS_EPI 0x02 |
| 108 | #define IIC_XTCNTLSS_SDBF 0x04 |
| 109 | #define IIC_XTCNTLSS_SBDD 0x08 |
| 110 | #define IIC_XTCNTLSS_SWS 0x10 |
| 111 | #define IIC_XTCNTLSS_SWC 0x20 |
| 112 | #define IIC_XTCNTLSS_SRS 0x40 |
| 113 | #define IIC_XTCNTLSS_SRC 0x80 |
| 114 | |
| 115 | /* IICx_DIRECTCNTL register */ |
| 116 | #define IIC_DIRCNTL_SDAC 0x08 |
| 117 | #define IIC_DIRCNTL_SCC 0x04 |
| 118 | #define IIC_DIRCNTL_MSDA 0x02 |
| 119 | #define IIC_DIRCNTL_MSC 0x01 |
| 120 | |
| 121 | #define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f) |
| 122 | #endif |