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TsiChungLieweaf9e442007-08-05 04:11:20 -05001/*
2 * Freescale I2C Controller
3 *
4 * Copyright 2006 Freescale Semiconductor, Inc.
5 *
6 * Based on earlier versions by Gleb Natapov <gnatapov@mrv.com>,
7 * Xianghua Xiao <x.xiao@motorola.com>, Eran Liberty (liberty@freescale.com),
8 * and Jeff Brown.
9 * Some bits are taken from linux driver writen by adrian@humboldt.co.uk.
10 *
11 * This software may be used and distributed according to the
12 * terms of the GNU Public License, Version 2, incorporated
13 * herein by reference.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * Version 2 as published by the Free Software Foundation.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * MA 02111-1307 USA
28 */
29
30#ifndef _ASM_FSL_I2C_H_
31#define _ASM_FSL_I2C_H_
32
33#include <asm/types.h>
34
35typedef struct fsl_i2c {
36
37 u8 adr; /* I2C slave address */
38 u8 res0[3];
39#define I2C_ADR 0xFE
40#define I2C_ADR_SHIFT 1
41#define I2C_ADR_RES ~(I2C_ADR)
42
43 u8 fdr; /* I2C frequency divider register */
44 u8 res1[3];
45#define IC2_FDR 0x3F
46#define IC2_FDR_SHIFT 0
47#define IC2_FDR_RES ~(IC2_FDR)
48
49 u8 cr; /* I2C control redister */
50 u8 res2[3];
51#define I2C_CR_MEN 0x80
52#define I2C_CR_MIEN 0x40
53#define I2C_CR_MSTA 0x20
54#define I2C_CR_MTX 0x10
55#define I2C_CR_TXAK 0x08
56#define I2C_CR_RSTA 0x04
57#define I2C_CR_BCST 0x01
58
59 u8 sr; /* I2C status register */
60 u8 res3[3];
61#define I2C_SR_MCF 0x80
62#define I2C_SR_MAAS 0x40
63#define I2C_SR_MBB 0x20
64#define I2C_SR_MAL 0x10
65#define I2C_SR_BCSTM 0x08
66#define I2C_SR_SRW 0x04
67#define I2C_SR_MIF 0x02
68#define I2C_SR_RXAK 0x01
69
70 u8 dr; /* I2C data register */
71 u8 res4[3];
72#define I2C_DR 0xFF
73#define I2C_DR_SHIFT 0
74#define I2C_DR_RES ~(I2C_DR)
75
76 u8 dfsrr; /* I2C digital filter sampling rate register */
77 u8 res5[3];
78#define I2C_DFSRR 0x3F
79#define I2C_DFSRR_SHIFT 0
80#define I2C_DFSRR_RES ~(I2C_DR)
81
82 /* Fill out the reserved block */
83 u8 res6[0xE8];
84} fsl_i2c_t;
85
86#endif /* _ASM_I2C_H_ */