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/*
* Copyright (C) 2013 Realtek Semiconductor Corp.
* All Rights Reserved.
*
* Unless you and Realtek execute a separate written software license
* agreement governing use of this software, this software is licensed
* to you under the terms of the GNU General Public License version 2,
* available at https://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*
* $Revision: 38651 $
* $Date: 2016-02-27 14:32:56 +0800 (周三, 17 四月 2016) $
*
* Purpose : RTL8367C switch high-level API for RTL8367C
* Feature : I2C related functions
*
*/
#include <rtl8367c_asicdrv_i2c.h>
#include <rtk_error.h>
#include <rtk_types.h>
/* Function Name:
* rtl8367c_setAsicI2C_checkBusIdle
* Description:
* Check i2c bus status idle or not
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* RT_ERR_BUSYWAIT_TIMEOUT - i2c bus is busy
* Note:
* This API can check i2c bus status.
*/
ret_t rtl8367c_setAsicI2C_checkBusIdle(void)
{
rtk_uint32 regData;
ret_t retVal;
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_M_I2C_BUS_IDLE_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
if(regData == 0x0001)
return RT_ERR_OK; /*i2c is idle*/
else
return RT_ERR_BUSYWAIT_TIMEOUT; /*i2c is busy*/
}
/* Function Name:
* rtl8367c_setAsicI2CStartCmd
* Description:
* Set I2C start command
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set i2c start command ,start a i2c traffic .
*/
ret_t rtl8367c_setAsicI2CStartCmd(void)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0000, Start Command; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x0001;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CStopCmd
* Description:
* Set I2C stop command
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set i2c stop command ,stop a i2c traffic.
*/
ret_t rtl8367c_setAsicI2CStopCmd(void)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0001, Stop Command; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x0003;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CTxOneCharCmd
* Description:
* Set I2C Tx a char command, with a 8-bit data
* Input:
* oneChar - 8-bit data
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set i2c Tx command and with a 8-bit data.
*/
ret_t rtl8367c_setAsicI2CTxOneCharCmd(rtk_uint8 oneChar)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0010, tx one char; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x0005;
regData &= 0x00FF;
regData |= (rtk_uint16) (oneChar << 8);
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CcheckRxAck
* Description:
* Check if rx an Ack
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can check if rx an ack from i2c slave.
*/
ret_t rtl8367c_setAsicI2CcheckRxAck(void)
{
rtk_uint32 regData;
ret_t retVal;
rtk_uint32 count = 0;
do{
count++;
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_SLV_ACK_FLAG_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( (regData != 0x1) && (count < TIMEROUT_FOR_MICROSEMI) );
if(regData != 0x1)
return RT_ERR_FAILED;
else
return RT_ERR_OK;
}
/* Function Name:
* rtl8367c_setAsicI2CRxOneCharCmd
* Description:
* Set I2C Rx command and get 8-bit data
* Input:
* None
* Output:
* pValue - 8bit-data
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set I2C Rx command and get 8-bit data.
*/
ret_t rtl8367c_setAsicI2CRxOneCharCmd(rtk_uint8 *pValue)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0011, Rx one char; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x0007;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
}while( (regData & 0x1) != 0x0);
*pValue = (rtk_uint8)(regData >> 8);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CTxAckCmd
* Description:
* Set I2C Tx ACK command
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set I2C Tx ack command.
*/
ret_t rtl8367c_setAsicI2CTxAckCmd(void)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0100, tx ACK Command; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x0009;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CTxNoAckCmd
* Description:
* Set I2C master Tx noACK command
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set I2C master Tx noACK command.
*/
ret_t rtl8367c_setAsicI2CTxNoAckCmd(void)
{
rtk_uint32 regData;
ret_t retVal;
/* Bits [4-1] = 0b0101, tx noACK Command; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x000b;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CSoftRSTseqCmd
* Description:
* set I2C master tx soft reset command
* Input:
* None
* Output:
* None
* Return:
* RT_ERR_OK - Success
* Note:
* This API can set I2C master tx soft reset command.
*/
ret_t rtl8367c_setAsicI2CSoftRSTseqCmd(void)
{
rtk_uint32 regData;
ret_t retVal;
/*Bits [4-1] = 0b0110, tx soft reset Command; Bit [0] = 1, Trigger the Command */
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xFFE0;
regData |= 0x000d;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_CTL_STA_REG, regData)) != RT_ERR_OK)
return retVal;
/* wait for command finished */
do{
if ((retVal = rtl8367c_getAsicRegBit(RTL8367C_REG_M_I2C_CTL_STA_REG, RTL8367C_I2C_CMD_EXEC_OFFSET, ®Data)) != RT_ERR_OK)
return retVal;
}while( regData != 0x0);
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CGpioPinGroup
* Description:
* set I2C function used gpio pins
* Input:
* pinGroup_ID - gpio pins group
* Output:
* None
* Return:
* RT_ERR_OK - Success
* RT_ERR_INPUT _ Invalid input parameter
* Note:
* This API can set I2C function used gpio pins.
* There are three group gpio pins
*/
ret_t rtl8367c_setAsicI2CGpioPinGroup(rtk_uint32 pinGroup_ID)
{
rtk_uint32 regData;
ret_t retVal;
if ((retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_SYS_CTL, ®Data)) != RT_ERR_OK)
return retVal;
if( pinGroup_ID==0 )
{
regData &= 0x0FFF;
regData |= 0x5000;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_SYS_CTL, regData)) != RT_ERR_OK)
return retVal;
}
else if( pinGroup_ID==1 )
{
regData &= 0x0FFF;
regData |= 0xA000;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_SYS_CTL, regData)) != RT_ERR_OK)
return retVal;
}
else if( pinGroup_ID==2 )
{
regData &= 0x0FFF;
regData |= 0xF000;
if ((retVal = rtl8367c_setAsicReg(RTL8367C_REG_M_I2C_SYS_CTL, regData)) != RT_ERR_OK)
return retVal;
}
else
return RT_ERR_INPUT;
return RT_ERR_OK ;
}
/* Function Name:
* rtl8367c_setAsicI2CGpioPinGroup
* Description:
* set I2C function used gpio pins
* Input:
* pinGroup_ID - gpio pins group
* Output:
* None
* Return:
* RT_ERR_OK - Success
* RT_ERR_INPUT _ Invalid input parameter
* Note:
* This API can set I2C function used gpio pins.
* There are three group gpio pins
*/
ret_t rtl8367c_getAsicI2CGpioPinGroup(rtk_uint32 * pPinGroup_ID)
{
rtk_uint32 regData;
ret_t retVal;
if( (retVal = rtl8367c_getAsicReg(RTL8367C_REG_M_I2C_SYS_CTL, ®Data)) != RT_ERR_OK)
return retVal;
regData &= 0xF000 ;
regData = (regData >> 12);
if( regData == 0x5 )
*pPinGroup_ID = 0;
else if(regData == 0xA)
*pPinGroup_ID = 1;
else if(regData == 0xF)
*pPinGroup_ID = 2;
else
return RT_ERR_FAILED;
return RT_ERR_OK ;
}
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