1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Freescale I2C Controller
5 * Copyright 2006 Freescale Semiconductor, Inc.
7 * Based on earlier versions by Gleb Natapov <gnatapov@mrv.com>,
8 * Xianghua Xiao <x.xiao@motorola.com>, Eran Liberty (liberty@freescale.com),
10 * Some bits are taken from linux driver writen by adrian@humboldt.co.uk.
13 #ifndef _ASM_FSL_I2C_H_
14 #define _ASM_FSL_I2C_H_
16 #include <asm/types.h>
18 typedef struct fsl_i2c_base {
20 u8 adr; /* I2C slave address */
23 #define I2C_ADR_SHIFT 1
24 #define I2C_ADR_RES ~(I2C_ADR)
26 u8 fdr; /* I2C frequency divider register */
29 #define IC2_FDR_SHIFT 0
30 #define IC2_FDR_RES ~(IC2_FDR)
32 u8 cr; /* I2C control redister */
34 #define I2C_CR_MEN 0x80
35 #define I2C_CR_MIEN 0x40
36 #define I2C_CR_MSTA 0x20
37 #define I2C_CR_MTX 0x10
38 #define I2C_CR_TXAK 0x08
39 #define I2C_CR_RSTA 0x04
40 #define I2C_CR_BCST 0x01
42 u8 sr; /* I2C status register */
44 #define I2C_SR_MCF 0x80
45 #define I2C_SR_MAAS 0x40
46 #define I2C_SR_MBB 0x20
47 #define I2C_SR_MAL 0x10
48 #define I2C_SR_BCSTM 0x08
49 #define I2C_SR_SRW 0x04
50 #define I2C_SR_MIF 0x02
51 #define I2C_SR_RXAK 0x01
53 u8 dr; /* I2C data register */
56 #define I2C_DR_SHIFT 0
57 #define I2C_DR_RES ~(I2C_DR)
60 #endif /* _ASM_I2C_H_ */