3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
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 */
35 #define IIC_TIMEOUT 1 /* 1 second */
37 #if defined(CONFIG_I2C_MULTI_BUS)
38 #define I2C_BUS_OFFS (i2c_bus_num * 0x100)
40 #define I2C_BUS_OFFS (0x000)
41 #endif /* CONFIG_I2C_MULTI_BUS */
43 #if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
44 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
45 defined(CONFIG_460EX) || defined(CONFIG_460GT)
46 #define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000700 + I2C_BUS_OFFS)
47 #elif defined(CONFIG_440) || defined(CONFIG_405EX)
48 /* all remaining 440 variants */
49 #define I2C_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000400 + I2C_BUS_OFFS)
51 /* all 405 variants */
52 #define I2C_BASE_ADDR (0xEF600500 + I2C_BUS_OFFS)
55 #define I2C_REGISTERS_BASE_ADDRESS I2C_BASE_ADDR
56 #define IIC_MDBUF (I2C_REGISTERS_BASE_ADDRESS+IICMDBUF)
57 #define IIC_SDBUF (I2C_REGISTERS_BASE_ADDRESS+IICSDBUF)
58 #define IIC_LMADR (I2C_REGISTERS_BASE_ADDRESS+IICLMADR)
59 #define IIC_HMADR (I2C_REGISTERS_BASE_ADDRESS+IICHMADR)
60 #define IIC_CNTL (I2C_REGISTERS_BASE_ADDRESS+IICCNTL)
61 #define IIC_MDCNTL (I2C_REGISTERS_BASE_ADDRESS+IICMDCNTL)
62 #define IIC_STS (I2C_REGISTERS_BASE_ADDRESS+IICSTS)
63 #define IIC_EXTSTS (I2C_REGISTERS_BASE_ADDRESS+IICEXTSTS)
64 #define IIC_LSADR (I2C_REGISTERS_BASE_ADDRESS+IICLSADR)
65 #define IIC_HSADR (I2C_REGISTERS_BASE_ADDRESS+IICHSADR)
66 #define IIC_CLKDIV (I2C_REGISTERS_BASE_ADDRESS+IICCLKDIV)
67 #define IIC_INTRMSK (I2C_REGISTERS_BASE_ADDRESS+IICINTRMSK)
68 #define IIC_XFRCNT (I2C_REGISTERS_BASE_ADDRESS+IICXFRCNT)
69 #define IIC_XTCNTLSS (I2C_REGISTERS_BASE_ADDRESS+IICXTCNTLSS)
70 #define IIC_DIRECTCNTL (I2C_REGISTERS_BASE_ADDRESS+IICDIRECTCNTL)
72 /* MDCNTL Register Bit definition */
73 #define IIC_MDCNTL_HSCL 0x01
74 #define IIC_MDCNTL_EUBS 0x02
75 #define IIC_MDCNTL_EINT 0x04
76 #define IIC_MDCNTL_ESM 0x08
77 #define IIC_MDCNTL_FSM 0x10
78 #define IIC_MDCNTL_EGC 0x20
79 #define IIC_MDCNTL_FMDB 0x40
80 #define IIC_MDCNTL_FSDB 0x80
82 /* CNTL Register Bit definition */
83 #define IIC_CNTL_PT 0x01
84 #define IIC_CNTL_READ 0x02
85 #define IIC_CNTL_CHT 0x04
86 #define IIC_CNTL_RPST 0x08
87 /* bit 2/3 for Transfer count*/
88 #define IIC_CNTL_AMD 0x40
89 #define IIC_CNTL_HMT 0x80
91 /* STS Register Bit definition */
92 #define IIC_STS_PT 0x01
93 #define IIC_STS_IRQA 0x02
94 #define IIC_STS_ERR 0x04
95 #define IIC_STS_SCMP 0x08
96 #define IIC_STS_MDBF 0x10
97 #define IIC_STS_MDBS 0x20
98 #define IIC_STS_SLPR 0x40
99 #define IIC_STS_SSS 0x80
101 /* EXTSTS Register Bit definition */
102 #define IIC_EXTSTS_XFRA 0x01
103 #define IIC_EXTSTS_ICT 0x02
104 #define IIC_EXTSTS_LA 0x04
106 /* XTCNTLSS Register Bit definition */
107 #define IIC_XTCNTLSS_SRST 0x01
108 #define IIC_XTCNTLSS_EPI 0x02
109 #define IIC_XTCNTLSS_SDBF 0x04
110 #define IIC_XTCNTLSS_SBDD 0x08
111 #define IIC_XTCNTLSS_SWS 0x10
112 #define IIC_XTCNTLSS_SWC 0x20
113 #define IIC_XTCNTLSS_SRS 0x40
114 #define IIC_XTCNTLSS_SRC 0x80
116 /* IICx_DIRECTCNTL register */
117 #define IIC_DIRCNTL_SDAC 0x08
118 #define IIC_DIRCNTL_SCC 0x04
119 #define IIC_DIRCNTL_MSDA 0x02
120 #define IIC_DIRCNTL_MSC 0x01
122 #define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f)