Aquaris-M10-4G/drivers/misc/mediatek/laser/stmvl6180/vl6180x_i2c.c

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/*
 * $Date: 2015-01-08 05:30:24 -0800 (Thu, 08 Jan 2015) $
 * $Revision: 2039 $
 */

/**
 * @file vl6180x_i2c.c
 *
 * Copyright (C) 2014 ST MicroElectronics
 *
 * provide variable word size byte/Word/dword VL6180x register access via i2c
 *
 */
#include "vl6180x_i2c.h"

#if 1

#ifndef I2C_BUFFER_CONFIG
#error "I2C_BUFFER_CONFIG not defined"
/* TODO you must define value for  I2C_BUFFER_CONFIG in configuration or platform h */
#endif

extern int s4VL6180_WriteRegByte(u16 addr, u8 data);
extern int s4VL6180_ReadRegByte(u16 addr, u8 *data);
extern int s4VL6180_WriteRegWord(u16 addr, u16 data);
extern  int s4VL6180_ReadRegWord(u16 addr, u16 *data);
extern int s4VL6180_WriteRegDWord(u16 addr, u32 data);
extern int s4VL6180_ReadRegDWord(u16 addr, u32 *data);

#if I2C_BUFFER_CONFIG == 0
    /* GLOBAL config buffer */
    uint8_t i2c_global_buffer[VL6180x_MAX_I2C_XFER_SIZE];

    #define DECL_I2C_BUFFER
    #define VL6180x_GetI2cBuffer(dev, n_byte)  i2c_global_buffer

#elif I2C_BUFFER_CONFIG == 1
    /* ON STACK */
    #define DECL_I2C_BUFFER  uint8_t LocBuffer[VL6180x_MAX_I2C_XFER_SIZE];
    #define VL6180x_GetI2cBuffer(dev, n_byte)  LocBuffer
#elif I2C_BUFFER_CONFIG == 2
    /* user define buffer type declare DECL_I2C_BUFFER  as access  via VL6180x_GetI2cBuffer */
    #define DECL_I2C_BUFFER
#else
#error "invalid I2C_BUFFER_CONFIG "
#endif


int VL6180x_WrByte(VL6180xDev_t dev, uint16_t index, uint8_t data)
{
    int  status;

    status = s4VL6180_WriteRegByte(index, data);
	
    return status;
}

int VL6180x_WrWord(VL6180xDev_t dev, uint16_t index, uint16_t data)
{
    int  status;

    status = s4VL6180_WriteRegWord(index, data);
	
    return status;
}

int VL6180x_WrDWord(VL6180xDev_t dev, uint16_t index, uint32_t data)
{
    int  status;

    status = s4VL6180_WriteRegDWord(index, data);

    return status;
}


int VL6180x_RdByte(VL6180xDev_t dev, uint16_t index, uint8_t *data)
{
    int  status;

    status = s4VL6180_ReadRegByte(index, data);

    return status;
}

int VL6180x_RdWord(VL6180xDev_t dev, uint16_t index, uint16_t *data)
{
    int  status;

    status = s4VL6180_ReadRegWord(index, data);
    

    return status;
}

int  VL6180x_RdDWord(VL6180xDev_t dev, uint16_t index, uint32_t *data)
{
    int status;

    status = s4VL6180_ReadRegDWord(index, data);	
	
    return status;
}


int VL6180x_UpdateByte(VL6180xDev_t dev, uint16_t index, uint8_t AndData, uint8_t OrData)
{
    int data;
    int status;

    VL6180x_RdByte(dev, index, (uint8_t *)&data );

    data=( data&AndData)|OrData;

    status = VL6180x_WrByte(dev, index, data);
	
    return status;
}



#endif