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Stefan Roese79b2d0b2007-02-20 10:27:08 +01001/*
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