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/*
* Copyright (c) 2009 NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "nvodm_pmu.h"
#include "nvodm_services.h"
#include "tca6416_expander_i2c.h"
#include "tca6416_expander_reg.h"
#define TCA6416_SLAVE_ADDR 0x40 // (7'h20)
#define TCA6416_I2C_SPEED_KHZ 400
NvBool
Tca6416ConfigPortPin(
NvOdmPmuDeviceHandle hDevice,
NvU32 PortNo,
NvU32 PinNo,
GpioPinMode Mode)
{
NvU8 WriteBuffer[2];
NvOdmI2cStatus Error;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo;
static NvU8 ConfigPort1Val = 0xFF; // set to default value
static NvU8 ConfigPort2Val = 0xFF; // set to default value
if (PortNo == TCA6416_PORT_0)
{
WriteBuffer[0] = TCA6416_CONFIG_PORT_0 & 0xFF;
if (Mode == GpioPinMode_Output)
{
WriteBuffer[1] = ((ConfigPort1Val & (0xFF & (~(1 << PinNo)))) | (0x0 << PinNo));
} else if (Mode == GpioPinMode_InputData)
{
WriteBuffer[1] = ((ConfigPort1Val & (0xFF & (~(1 << PinNo)))) | (0x1 << PinNo));
}
ConfigPort1Val = WriteBuffer[1];
}else if (PortNo == TCA6416_PORT_1)
{
WriteBuffer[0] = TCA6416_CONFIG_PORT_1 & 0xFF;
if (Mode == GpioPinMode_Output)
{
WriteBuffer[1] = (ConfigPort2Val & (0xFF & (~(1 << PinNo))));
} else if (Mode == GpioPinMode_InputData)
{
WriteBuffer[1] = ((ConfigPort2Val & (0xFF & (~(1 << PinNo)))) | (0x1 << PinNo));
}
ConfigPort2Val = WriteBuffer[1];
}
TransactionInfo.Address = TCA6416_SLAVE_ADDR;
TransactionInfo.Buf = WriteBuffer;
TransactionInfo.Flags = NVODM_I2C_IS_WRITE;
TransactionInfo.NumBytes = 2;
// write the pmu Offset (from where data gpio need to be set)
Error = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo, 1,
TCA6416_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (Error == NvOdmI2cStatus_Success)
{
return NV_TRUE;
}
else
{
switch (Error)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("Tca6416ConfigPortPin Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("Tca6416ConfigPortPin Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
}
NvBool
Tca6416WritePortPin(
NvOdmPmuDeviceHandle hDevice,
NvU32 PortNo,
NvU32 PinNo,
GpioPinState data)
{
NvOdmI2cTransactionInfo TransactionInfo;
NvOdmI2cStatus Error;
NvU8 WriteBuffer[2];
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
static NvU8 OutPut1Val = 0xFF; // set to default value
static NvU8 OutPut2Val = 0xFF; // set to default value
/* set the command byte */
if (PortNo == TCA6416_PORT_0)
{
WriteBuffer[0] = TCA6416_OUTPUT_PORT_0 & 0xFF;
// Set the data
WriteBuffer[1] = ((OutPut1Val & (0xFF & (~(1 << PinNo)))) | (data << PinNo));
OutPut1Val = WriteBuffer[1];
} else if (PortNo == TCA6416_PORT_1)
{
WriteBuffer[0] = TCA6416_OUTPUT_PORT_1 & 0xFF;
// Set the data
WriteBuffer[1] = ((OutPut2Val & (0xFF & (~(1 << PinNo)))) | (data << PinNo));
OutPut2Val = WriteBuffer[1];
}
TransactionInfo.Address = TCA6416_SLAVE_ADDR;
TransactionInfo.Buf = WriteBuffer;
TransactionInfo.Flags = NVODM_I2C_IS_WRITE;
TransactionInfo.NumBytes = 2;
Error = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo, 1,
TCA6416_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (Error == NvOdmI2cStatus_Success)
{
return NV_TRUE;
}
else
{
switch (Error)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("Tca6416I2cWrite8 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("Tca6416I2cWrite8 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
}
NvBool
Tca6416ReadPortPin(
NvOdmPmuDeviceHandle hDevice,
NvU32 PortNo,
NvU32 PinNo,
GpioPinState*State)
{
// Need to implement
return NV_TRUE;
}
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