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/*
* Copyright (c) 2009 NVIDIA Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NVIDIA Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "max8907b.h"
#include "max8907b_i2c.h"
#include "max8907b_reg.h"
#define MAX8907B_I2C_SPEED_KHZ 400
#define MAX8907B_I2C_RETRY_CNT 2
NvBool Max8907bI2cWrite8(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU8 Data)
{
NvU32 i;
NvU8 WriteBuffer[2];
NvOdmI2cTransactionInfo TransactionInfo;
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
WriteBuffer[0] = Addr & 0xFF; // PMU offset
WriteBuffer[1] = Data & 0xFF; // written data
TransactionInfo.Address = hPmu->DeviceAddr;
TransactionInfo.Buf = &WriteBuffer[0];
TransactionInfo.Flags = NVODM_I2C_IS_WRITE;
TransactionInfo.NumBytes = 2;
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo, 1,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
return NV_TRUE;
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("NvOdmPmuI2cWrite8 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("NvOdmPmuI2cWrite8 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
NvBool Max8907bI2cRead8(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU8 *Data)
{
NvU32 i;
NvU8 ReadBuffer = 0;
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo[2];
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
// Write the PMU offset
ReadBuffer = Addr & 0xFF;
TransactionInfo[0].Address = hPmu->DeviceAddr;
TransactionInfo[0].Buf = &ReadBuffer;
TransactionInfo[0].Flags = NVODM_I2C_IS_WRITE | NVODM_I2C_USE_REPEATED_START;
TransactionInfo[0].NumBytes = 1;
TransactionInfo[1].Address = (hPmu->DeviceAddr | 0x1);
TransactionInfo[1].Buf = &ReadBuffer;
TransactionInfo[1].Flags = 0;
TransactionInfo[1].NumBytes = 1;
// Read data from PMU at the specified offset
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo[0], 2,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
{
*Data = ReadBuffer;
return NV_TRUE;
}
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("NvOdmPmuI2cRead8 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("NvOdmPmuI2cRead8 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
NvBool Max8907bI2cWrite32(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU32 Data)
{
NvU32 i;
NvU8 WriteBuffer[5];
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo;
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
WriteBuffer[0] = (NvU8)(Addr & 0xFF);
WriteBuffer[1] = (NvU8)((Data >> 24) & 0xFF);
WriteBuffer[2] = (NvU8)((Data >> 16) & 0xFF);
WriteBuffer[3] = (NvU8)((Data >> 8) & 0xFF);
WriteBuffer[4] = (NvU8)(Data & 0xFF);
TransactionInfo.Address = hPmu->DeviceAddr;
TransactionInfo.Buf = &WriteBuffer[0];
TransactionInfo.Flags = NVODM_I2C_IS_WRITE;
TransactionInfo.NumBytes = 5;
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo, 1,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
return NV_TRUE;
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("NvOdmPmuI2cWrite32 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("NvOdmPmuI2cWrite32 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
NvBool Max8907bI2cRead32(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU32 *Data)
{
NvU32 i;
NvU8 ReadBuffer[5];
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo[2];
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
ReadBuffer[0] = Addr & 0xFF;
TransactionInfo[0].Address = hPmu->DeviceAddr;
TransactionInfo[0].Buf = &ReadBuffer[0];
TransactionInfo[0].Flags = NVODM_I2C_IS_WRITE | NVODM_I2C_USE_REPEATED_START;
TransactionInfo[0].NumBytes = 1;
TransactionInfo[1].Address = (hPmu->DeviceAddr | 0x1);
TransactionInfo[1].Buf = &ReadBuffer[0];
TransactionInfo[1].Flags = 0;
TransactionInfo[1].NumBytes = 4;
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo[0], 2,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
{
*Data = (ReadBuffer[0] << 24) | (ReadBuffer[1] << 16) |
(ReadBuffer[2] << 8) | ReadBuffer[3];
return NV_TRUE;
}
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("NvOdmPmuI2cRead32 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("NvOdmPmuI2cRead32 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
NvBool Max8907bRtcI2cWriteTime(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU32 Data)
{
NvU32 i;
NvU8 WriteBuffer[5];
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo;
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
WriteBuffer[0] = (NvU8)(Addr & 0xFF);
WriteBuffer[1] = (NvU8)((Data >> 24) & 0xFF);
WriteBuffer[2] = (NvU8)((Data >> 16) & 0xFF);
WriteBuffer[3] = (NvU8)((Data >> 8) & 0xFF);
WriteBuffer[4] = (NvU8)(Data & 0xFF);
TransactionInfo.Address = MAX8907B_RTC_SLAVE_ADDR;
TransactionInfo.Buf = &WriteBuffer[0];
TransactionInfo.Flags = NVODM_I2C_IS_WRITE;
TransactionInfo.NumBytes = 5;
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo, 1,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
return NV_TRUE;
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("Max8907bRtcI2cWrite32 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("Max8907bRtcI2cWrite32 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
NvBool Max8907bRtcI2cReadTime(
NvOdmPmuDeviceHandle hDevice,
NvU8 Addr,
NvU32 *Data)
{
NvU32 i;
NvU8 ReadBuffer[4];
NvOdmI2cStatus status = NvOdmI2cStatus_Success;
Max8907bPrivData *hPmu = (Max8907bPrivData*)hDevice->pPrivate;
NvOdmI2cTransactionInfo TransactionInfo[4];
for (i = 0; i < MAX8907B_I2C_RETRY_CNT; i++)
{
ReadBuffer[0] = Addr++ & 0xFF;
ReadBuffer[1] = Addr++ & 0xFF;
ReadBuffer[2] = Addr++ & 0xFF;
ReadBuffer[3] = 0;
TransactionInfo[0].Address = MAX8907B_RTC_SLAVE_ADDR;
TransactionInfo[0].Buf = &ReadBuffer[0];
TransactionInfo[0].Flags = NVODM_I2C_IS_WRITE | NVODM_I2C_USE_REPEATED_START;
TransactionInfo[0].NumBytes = 1;
// Seconds
TransactionInfo[1].Address = (MAX8907B_RTC_SLAVE_ADDR | 0x1);
TransactionInfo[1].Buf = &ReadBuffer[0];
TransactionInfo[1].Flags = 0;
TransactionInfo[1].NumBytes = 1;
// Minutes
TransactionInfo[2].Address = (MAX8907B_RTC_SLAVE_ADDR | 0x1);
TransactionInfo[2].Buf = &ReadBuffer[1];
TransactionInfo[2].Flags = 0;
TransactionInfo[2].NumBytes = 1;
// Hours
TransactionInfo[3].Address = (MAX8907B_RTC_SLAVE_ADDR | 0x1);
TransactionInfo[3].Buf = &ReadBuffer[2];
TransactionInfo[3].Flags = 0;
TransactionInfo[3].NumBytes = 1;
status = NvOdmI2cTransaction(hPmu->hOdmI2C, &TransactionInfo[0], 4,
MAX8907B_I2C_SPEED_KHZ, NV_WAIT_INFINITE);
if (status == NvOdmI2cStatus_Success)
{
*Data = (ReadBuffer[0] << 24) | (ReadBuffer[1] << 16) |
(ReadBuffer[2] << 8) | ReadBuffer[3];
return NV_TRUE;
}
}
// Transaction Error
switch (status)
{
case NvOdmI2cStatus_Timeout:
NVODMPMU_PRINTF(("Max8907bRtcI2cRead32 Failed: Timeout\n"));
break;
case NvOdmI2cStatus_SlaveNotFound:
default:
NVODMPMU_PRINTF(("Max8907bRtcI2cRead32 Failed: SlaveNotFound\n"));
break;
}
return NV_FALSE;
}
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