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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 | ||
eb5eb2b0 SR |
37 | struct ppc4xx_i2c { |
38 | u8 mdbuf; | |
39 | u8 res1; | |
40 | u8 sdbuf; | |
41 | u8 res2; | |
42 | u8 lmadr; | |
43 | u8 hmadr; | |
44 | u8 cntl; | |
45 | u8 mdcntl; | |
46 | u8 sts; | |
47 | u8 extsts; | |
48 | u8 lsadr; | |
49 | u8 hsadr; | |
50 | u8 clkdiv; | |
51 | u8 intrmsk; | |
52 | u8 xfrcnt; | |
53 | u8 xtcntlss; | |
54 | u8 directcntl; | |
55 | u8 intr; | |
56 | }; | |
79b2d0bb SR |
57 | |
58 | /* MDCNTL Register Bit definition */ | |
59 | #define IIC_MDCNTL_HSCL 0x01 | |
60 | #define IIC_MDCNTL_EUBS 0x02 | |
61 | #define IIC_MDCNTL_EINT 0x04 | |
62 | #define IIC_MDCNTL_ESM 0x08 | |
63 | #define IIC_MDCNTL_FSM 0x10 | |
64 | #define IIC_MDCNTL_EGC 0x20 | |
65 | #define IIC_MDCNTL_FMDB 0x40 | |
66 | #define IIC_MDCNTL_FSDB 0x80 | |
67 | ||
68 | /* CNTL Register Bit definition */ | |
69 | #define IIC_CNTL_PT 0x01 | |
70 | #define IIC_CNTL_READ 0x02 | |
71 | #define IIC_CNTL_CHT 0x04 | |
72 | #define IIC_CNTL_RPST 0x08 | |
73 | /* bit 2/3 for Transfer count*/ | |
74 | #define IIC_CNTL_AMD 0x40 | |
75 | #define IIC_CNTL_HMT 0x80 | |
76 | ||
77 | /* STS Register Bit definition */ | |
78 | #define IIC_STS_PT 0x01 | |
79 | #define IIC_STS_IRQA 0x02 | |
80 | #define IIC_STS_ERR 0x04 | |
81 | #define IIC_STS_SCMP 0x08 | |
82 | #define IIC_STS_MDBF 0x10 | |
83 | #define IIC_STS_MDBS 0x20 | |
84 | #define IIC_STS_SLPR 0x40 | |
85 | #define IIC_STS_SSS 0x80 | |
86 | ||
87 | /* EXTSTS Register Bit definition */ | |
88 | #define IIC_EXTSTS_XFRA 0x01 | |
89 | #define IIC_EXTSTS_ICT 0x02 | |
90 | #define IIC_EXTSTS_LA 0x04 | |
91 | ||
92 | /* XTCNTLSS Register Bit definition */ | |
93 | #define IIC_XTCNTLSS_SRST 0x01 | |
94 | #define IIC_XTCNTLSS_EPI 0x02 | |
95 | #define IIC_XTCNTLSS_SDBF 0x04 | |
96 | #define IIC_XTCNTLSS_SBDD 0x08 | |
97 | #define IIC_XTCNTLSS_SWS 0x10 | |
98 | #define IIC_XTCNTLSS_SWC 0x20 | |
99 | #define IIC_XTCNTLSS_SRS 0x40 | |
100 | #define IIC_XTCNTLSS_SRC 0x80 | |
101 | ||
102 | /* IICx_DIRECTCNTL register */ | |
103 | #define IIC_DIRCNTL_SDAC 0x08 | |
104 | #define IIC_DIRCNTL_SCC 0x04 | |
105 | #define IIC_DIRCNTL_MSDA 0x02 | |
106 | #define IIC_DIRCNTL_MSC 0x01 | |
107 | ||
108 | #define DIRCTNL_FREE(v) (((v) & 0x0f) == 0x0f) | |
109 | #endif |