diff options
Diffstat (limited to 'arch/powerpc/include/asm/fsl_i2c.h')
| -rw-r--r-- | arch/powerpc/include/asm/fsl_i2c.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/fsl_i2c.h b/arch/powerpc/include/asm/fsl_i2c.h new file mode 100644 index 0000000..fbf32b9 --- /dev/null +++ b/arch/powerpc/include/asm/fsl_i2c.h @@ -0,0 +1,80 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Freescale I2C Controller + * + * Copyright 2006 Freescale Semiconductor, Inc. + * + * Based on earlier versions by Gleb Natapov <gnatapov@mrv.com>, + * Xianghua Xiao <x.xiao@motorola.com>, Eran Liberty (liberty@freescale.com), + * and Jeff Brown. + * Some bits are taken from linux driver writen by adrian@humboldt.co.uk. + */ + +#ifndef _ASM_FSL_I2C_H_ +#define _ASM_FSL_I2C_H_ + +#include <asm/types.h> + +typedef struct fsl_i2c_base { + + u8 adr; /* I2C slave address */ + u8 res0[3]; +#define I2C_ADR 0xFE +#define I2C_ADR_SHIFT 1 +#define I2C_ADR_RES ~(I2C_ADR) + + u8 fdr; /* I2C frequency divider register */ + u8 res1[3]; +#define IC2_FDR 0x3F +#define IC2_FDR_SHIFT 0 +#define IC2_FDR_RES ~(IC2_FDR) + + u8 cr; /* I2C control redister */ + u8 res2[3]; +#define I2C_CR_MEN 0x80 +#define I2C_CR_MIEN 0x40 +#define I2C_CR_MSTA 0x20 +#define I2C_CR_MTX 0x10 +#define I2C_CR_TXAK 0x08 +#define I2C_CR_RSTA 0x04 +#define I2C_CR_BIT6 0x02 /* required for workaround A004447 */ +#define I2C_CR_BCST 0x01 + + u8 sr; /* I2C status register */ + u8 res3[3]; +#define I2C_SR_MCF 0x80 +#define I2C_SR_MAAS 0x40 +#define I2C_SR_MBB 0x20 +#define I2C_SR_MAL 0x10 +#define I2C_SR_BCSTM 0x08 +#define I2C_SR_SRW 0x04 +#define I2C_SR_MIF 0x02 +#define I2C_SR_RXAK 0x01 + + u8 dr; /* I2C data register */ + u8 res4[3]; +#define I2C_DR 0xFF +#define I2C_DR_SHIFT 0 +#define I2C_DR_RES ~(I2C_DR) + + u8 dfsrr; /* I2C digital filter sampling rate register */ + u8 res5[3]; +#define I2C_DFSRR 0x3F +#define I2C_DFSRR_SHIFT 0 +#define I2C_DFSRR_RES ~(I2C_DR) + + /* Fill out the reserved block */ + u8 res6[0xE8]; +} fsl_i2c_t; + +#ifdef CONFIG_DM_I2C +struct fsl_i2c_dev { + struct fsl_i2c_base __iomem *base; /* register base */ + u32 i2c_clk; + u32 index; + u8 slaveadd; + uint speed; +}; +#endif + +#endif /* _ASM_I2C_H_ */ |