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Stefan Roese79b2d0b2007-02-20 10:27:08 +01001/*
Stefan Roeseeb5eb2b2009-11-19 14:03:17 +01002 * (C) Copyright 2007-2009
Stefan Roese79b2d0b2007-02-20 10:27:08 +01003 * 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) || \
Stefan Roese999ecd52008-03-11 15:07:10 +010044 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
45 defined(CONFIG_460EX) || defined(CONFIG_460GT)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020046#define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000700 + I2C_BUS_OFFS)
Stefan Roesedbbd1252007-10-05 17:10:59 +020047#elif defined(CONFIG_440) || defined(CONFIG_405EX)
Stefan Roese79b2d0b2007-02-20 10:27:08 +010048/* all remaining 440 variants */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020049#define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000400 + I2C_BUS_OFFS)
Stefan Roese79b2d0b2007-02-20 10:27:08 +010050#else
51/* all 405 variants */
52#define I2C_BASE_ADDR (0xEF600500 + I2C_BUS_OFFS)
53#endif
54
Stefan Roeseeb5eb2b2009-11-19 14:03:17 +010055struct 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};
Stefan Roese79b2d0b2007-02-20 10:27:08 +010075
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