1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* $OpenBSD: ti_iicreg.h,v 1.1 2013/11/24 15:00:22 rapha Exp $ */
/* $NetBSD: ti_iicreg.h,v 1.1 2013/04/17 14:33:06 bouyer Exp $ */
/*
* Copyright (c) 2013 Manuel Bouyer. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* register definitions for the i2c controller found in the
* Texas Instrument AM335x SOC
*/
#ifndef _AM335XIICREG_H
#define _AM335XIICREG_H
#define AM335X_I2C_REVNB_LO 0x00
#define I2C_REVNB_LO_RTL(x) (((x) >> 11) & 0x01f)
#define I2C_REVNB_LO_MAJOR(x) (((x) >> 8) & 0x007)
#define I2C_REVNB_LO_CUSTOM(x) (((x) >> 6) & 0x003)
#define I2C_REVNB_LO_MINOR(x) (((x) >> 0) & 0x01f)
#define AM335X_I2C_REVNB_HI 0x04
#define I2C_REVNB_HI_SCHEME(x) (((x) >> 14) & 0x003)
#define I2C_REVNB_HI_FUNC(x) (((x) >> 0) & 0xfff)
#define AM335X_I2C_SYSC 0x10
#define I2C_SYSC_CLKACTIVITY_OCP 0x0010
#define I2C_SYSC_CLKACTIVITY_SYSTEM 0x0020
#define I2C_SYSC_IDLE_MASK 0x0018
#define I2C_SYSC_IDLE_FORCE 0x0000
#define I2C_SYSC_IDLE_SMART 0x0010
#define I2C_SYSC_IDLE_NONE 0x0008
#define I2C_SYSC_ENAWAKEUP 0x0004
#define I2C_SYSC_SRST 0x0002
#define I2C_SYSC_AUTOIDLE 0x0001
#define AM335X_I2C_IRQSTATUS_RAW 0x24
#define AM335X_I2C_IRQSTATUS 0x28
#define AM335X_I2C_IRQENABLE_SET 0x2C
#define AM335X_I2C_IRQENABLE_CLR 0x30
#define AM335X_I2C_WE 0x34
#define I2C_IRQSTATUS_XDR 0x4000
#define I2C_IRQSTATUS_RDR 0x2000
#define I2C_IRQSTATUS_BB 0x1000
#define I2C_IRQSTATUS_ROVR 0x0800
#define I2C_IRQSTATUS_XUDF 0x0400
#define I2C_IRQSTATUS_AAS 0x0200
#define I2C_IRQSTATUS_BF 0x0100
#define I2C_IRQSTATUS_AERR 0x0080
#define I2C_IRQSTATUS_STC 0x0040
#define I2C_IRQSTATUS_GC 0x0020
#define I2C_IRQSTATUS_XRDY 0x0010
#define I2C_IRQSTATUS_RRDY 0x0008
#define I2C_IRQSTATUS_ARDY 0x0004
#define I2C_IRQSTATUS_NACK 0x0002
#define I2C_IRQSTATUS_AL 0x0001
#define AM335X_I2C_DMARXENABLE_SET 0x38
#define AM335X_I2C_DMATXENABLE_SET 0x3C
#define AM335X_I2C_DMARXENABLE_CLR 0x40
#define I2C_DMARXENABLE 0x0001
#define AM335X_I2C_DMATXENABLE_CLR 0x44
#define I2C_DMATXENABLE 0x0001
#define AM335X_I2C_DMARXWAKE_EN 0x48
/* use same bits as IRQ */
#define AM335X_I2C_DMATXWAKE_EN 0x4C
/* use same bits as IRQ */
#define AM335X_I2C_SYSS 0x90
#define I2C_SYSS_RDONE 0x0001
#define AM335X_I2C_BUF 0x94
#define I2C_BUF_RDMA_EN 0x8000
#define I2C_BUF_RXFIFO_CLR 0x4000
#define I2C_BUF_RXTRSH_MASK 0x3f00
#define I2C_BUF_RXTRSH(x) ((x) << 8)
#define I2C_BUF_XDMA_EN 0x0080
#define I2C_BUF_TXFIFO_CLR 0x0040
#define I2C_BUF_TXTRSH_MASK 0x003f
#define I2C_BUF_TXTRSH(x) ((x) << 0)
#define AM335X_I2C_CNT 0x98
#define I2C_CNT_MASK 0xffff
#define AM335X_I2C_DATA 0x9C
#define I2C_DATA_MASK 0x00ff
#define AM335X_I2C_CON 0xA4
#define I2C_CON_EN 0x8000
#define I2C_CON_STB 0x0800
#define I2C_CON_MST 0x0400
#define I2C_CON_TRX 0x0200
#define I2C_CON_XSA 0x0100
#define I2C_CON_XOA0 0x0080
#define I2C_CON_XOA1 0x0040
#define I2C_CON_XOA2 0x0020
#define I2C_CON_XOA3 0x0010
#define I2C_CON_STP 0x0002
#define I2C_CON_STT 0x0001
#define AM335X_I2C_OA 0xA8
#define I2C_OA_MASK 0x03ff
#define AM335X_I2C_SA 0xAC
#define I2C_SA_MASK 0x03ff
#define AM335X_I2C_PSC 0xB0
#define I2C_PSC_MASK 0x000f
#define AM335X_I2C_SCLL 0xB4
#define I2C_SCLL_MASK 0x000f
#define AM335X_I2C_SCLH 0xB8
#define I2C_SCLH_MASK 0x000f
#define AM335X_I2C_SYSTEST 0xBC
#define AM335X_I2C_BUFSTAT 0xC0
#define I2C_BUFSTAT_FIFODEPTH(x) (((x) >> 14) & 0x03)
#define I2C_BUFSTAT_RXSTAT(x) (((x) >> 8) & 0x3f)
#define I2C_BUFSTAT_TXSTAT(x) (((x) >> 0) & 0x3f)
#define AM335X_I2C_OA1 0xC4
#define AM335X_I2C_OA2 0xC8
#define AM335X_I2C_OA3 0xCC
/* same bits as I2C_OA */
#define AM335X_I2C_ACTOA 0xD0
#define AM335X_I2C_SBLOCK 0xD4
#define I2C_ACTOA_OA3_ACT 0x0008
#define I2C_ACTOA_OA2_ACT 0x0004
#define I2C_ACTOA_OA1_ACT 0x0002
#define I2C_ACTOA_OA0_ACT 0x0001
#endif /* _AM335XIICREG_H */
|
