projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 79b2d0bb | 1 | /* |
| eb5eb2b0 | 2 | * (C) Copyright 2007-2009 |
| 79b2d0bb SR |
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) || \ | |
| 999ecd5a SR |
44 | defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \ |
| 45 | defined(CONFIG_460EX) || defined(CONFIG_460GT) | |
| 6d0f6bcf | 46 | #define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000700 + I2C_BUS_OFFS) |
| dbbd1257 | 47 | #elif defined(CONFIG_440) || defined(CONFIG_405EX) |
| 79b2d0bb | 48 | /* all remaining 440 variants */ |
| 6d0f6bcf | 49 | #define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000400 + I2C_BUS_OFFS) |
| 79b2d0bb SR |
50 | #else |
| 51 | /* all 405 variants */ | |
| 52 | #define I2C_BASE_ADDR (0xEF600500 + I2C_BUS_OFFS) | |
| 53 | #endif | |
| 54 | ||
| eb5eb2b0 SR |
55 | struct ppc4xx_i2c { |
| 56 | u8 mdbuf; | |
| 57 | u8 res1; | |
| 58 | u8 sdbuf; | |
| 59 | u8 res2; | |
| 60 | u8 lmadr; | |
| 61 | u8 hmadr; | |
| 62 | u8 cntl; | |
| 63 | u8 mdcntl; | |
| 64 | u8 sts; | |
| 65 | u8 extsts; | |
| 66 | u8 lsadr; | |
| 67 | u8 hsadr; | |
| 68 | u8 clkdiv; | |
| 69 | u8 intrmsk; | |
| 70 | u8 xfrcnt; | |
| 71 | u8 xtcntlss; | |
| 72 | u8 directcntl; | |
| 73 | u8 intr; | |
| 74 | }; | |
| 79b2d0bb SR |
75 | |
| 76 | /* MDCNTL Register Bit definition */ | |
| 77 | #define IIC_MDCNTL_HSCL 0x01 | |
| 78 | #define IIC_MDCNTL_EUBS 0x02 | |
| 79 | #define IIC_MDCNTL_EINT 0x04 | |
| 80 | #define IIC_MDCNTL_ESM 0x08 | |
| 81 | #define IIC_MDCNTL_FSM 0x10 | |
| 82 | #define IIC_MDCNTL_EGC 0x20 | |
| 83 | #define IIC_MDCNTL_FMDB 0x40 | |
| 84 | #define IIC_MDCNTL_FSDB 0x80 | |
| 85 | ||
| 86 | /* CNTL Register Bit definition */ | |
| 87 | #define IIC_CNTL_PT 0x01 | |
| 88 | #define IIC_CNTL_READ 0x02 | |
| 89 | #define IIC_CNTL_CHT 0x04 | |
| 90 | #define IIC_CNTL_RPST 0x08 | |
| 91 | /* bit 2/3 for Transfer count*/ | |
| 92 | #define IIC_CNTL_AMD 0x40 | |
| 93 | #define IIC_CNTL_HMT 0x80 | |
| 94 | ||
| 95 | /* STS Register Bit definition */ | |
| 96 | #define IIC_STS_PT 0x01 | |
| 97 | #define IIC_STS_IRQA 0x02 | |
| 98 | #define IIC_STS_ERR 0x04 | |
| 99 | #define IIC_STS_SCMP 0x08 | |
| 100 | #define IIC_STS_MDBF 0x10 | |
| 101 | #define IIC_STS_MDBS 0x20 | |
| 102 | #define IIC_STS_SLPR 0x40 | |
| 103 | #define IIC_STS_SSS 0x80 | |
| 104 | ||
| 105 | /* EXTSTS Register Bit definition */ | |
| 106 | #define IIC_EXTSTS_XFRA 0x01 | |
| 107 | #define IIC_EXTSTS_ICT 0x02 | |
| 108 | #define IIC_EXTSTS_LA 0x04 | |
| 109 | ||
| 110 | /* XTCNTLSS Register Bit definition */ | |
| 111 | #define IIC_XTCNTLSS_SRST 0x01 | |
| 112 | #define IIC_XTCNTLSS_EPI 0x02 | |
| 113 | #define IIC_XTCNTLSS_SDBF 0x04 | |
| 114 | #define IIC_XTCNTLSS_SBDD 0x08 | |
| 115 | #define IIC_XTCNTLSS_SWS 0x10 | |
| 116 | #define IIC_XTCNTLSS_SWC 0x20 | |
| 117 | #define IIC_XTCNTLSS_SRS 0x40 | |
| 118 | #define IIC_XTCNTLSS_SRC 0x80 | |
| 119 | ||
| 120 | /* IICx_DIRECTCNTL register */ | |
| 121 | #define IIC_DIRCNTL_SDAC 0x08 | |
| 122 | #define IIC_DIRCNTL_SCC 0x04 | |
| 123 | #define IIC_DIRCNTL_MSDA 0x02 | |
| 124 | #define IIC_DIRCNTL_MSC 0x01 | |
| 125 | ||
| 126 | #define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f) | |
| 127 | #endif |