1 /* 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 * SPDX-License-Identifier: GPL-2.0 12 */ 13 14 #ifndef _ASM_FSL_I2C_H_ 15 #define _ASM_FSL_I2C_H_ 16 17 #include <asm/types.h> 18 19 typedef struct fsl_i2c_base { 20 21 u8 adr; /* I2C slave address */ 22 u8 res0[3]; 23 #define I2C_ADR 0xFE 24 #define I2C_ADR_SHIFT 1 25 #define I2C_ADR_RES ~(I2C_ADR) 26 27 u8 fdr; /* I2C frequency divider register */ 28 u8 res1[3]; 29 #define IC2_FDR 0x3F 30 #define IC2_FDR_SHIFT 0 31 #define IC2_FDR_RES ~(IC2_FDR) 32 33 u8 cr; /* I2C control redister */ 34 u8 res2[3]; 35 #define I2C_CR_MEN 0x80 36 #define I2C_CR_MIEN 0x40 37 #define I2C_CR_MSTA 0x20 38 #define I2C_CR_MTX 0x10 39 #define I2C_CR_TXAK 0x08 40 #define I2C_CR_RSTA 0x04 41 #define I2C_CR_BCST 0x01 42 43 u8 sr; /* I2C status register */ 44 u8 res3[3]; 45 #define I2C_SR_MCF 0x80 46 #define I2C_SR_MAAS 0x40 47 #define I2C_SR_MBB 0x20 48 #define I2C_SR_MAL 0x10 49 #define I2C_SR_BCSTM 0x08 50 #define I2C_SR_SRW 0x04 51 #define I2C_SR_MIF 0x02 52 #define I2C_SR_RXAK 0x01 53 54 u8 dr; /* I2C data register */ 55 u8 res4[3]; 56 #define I2C_DR 0xFF 57 #define I2C_DR_SHIFT 0 58 #define I2C_DR_RES ~(I2C_DR) 59 } fsl_i2c_t; 60 61 #endif /* _ASM_I2C_H_ */ 62