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/****************************************************************************
*
* Copyright(c) 2010 Yamaha Corporation. All rights reserved.
*
* Module : mcmachdep.c
*
* Description : machine dependent part for MC Driver
*
* Version : 1.0.0 2010.09.10
*
****************************************************************************/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include "mcmachdep.h"
#include "mc1n2_priv.h"
#if (MCDRV_DEBUG_LEVEL>=4)
#include "mcdebuglog.h"
#endif
static struct mutex McDrv_Mutex;
static struct i2c_client *McDrv_I2C_Client;
/****************************************************************************
* machdep_SystemInit
*
* Description:
* Initialize the system.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_SystemInit
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_SystemInit");
#endif
/* Please implement system initialization procedure if need */
mutex_init(&McDrv_Mutex);
McDrv_I2C_Client = mc1n2_get_i2c_client();
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_SystemInit", 0);
#endif
}
/****************************************************************************
* machdep_SystemTerm
*
* Description:
* Terminate the system.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_SystemTerm
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_SystemTerm");
#endif
/* Please implement system termination procedure if need */
mutex_destroy(&McDrv_Mutex);
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_SystemTerm", 0);
#endif
}
/****************************************************************************
* machdep_ClockStart
*
* Description:
* Start clock.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_ClockStart
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_ClockStart");
#endif
/* Please implement clock start procedure if need */
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_ClockStart", 0);
#endif
}
/****************************************************************************
* machdep_ClockStop
*
* Description:
* Stop clock.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_ClockStop
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_ClockStop");
#endif
/* Please implement clock stop procedure if need */
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_ClockStop", 0);
#endif
}
/***************************************************************************
* machdep_WriteI2C
*
* Function:
* Write a byte data to the register.
* Arguments:
* bSlaveAdr slave address
* pbData byte data for write
* dSize byte data length
* Return:
* None
*
****************************************************************************/
void machdep_WriteI2C
(
UINT8 bSlaveAdr,
const UINT8* pbData,
UINT32 dSize
)
{
int count;
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_WriteI2C");
#endif
/* Please implement register write procedure */
count = i2c_master_send(McDrv_I2C_Client, pbData, dSize);
if (count != dSize) {
dev_err(&McDrv_I2C_Client->dev, "I2C write error\n");
}
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_WriteI2C", 0);
#endif
}
/***************************************************************************
* machdep_ReadI2C
*
* Function:
* Read a byte data from the register.
* Arguments:
* bSlaveAdr slave address
* dAddress address of register
* Return:
* read data
*
****************************************************************************/
UINT8 machdep_ReadI2C
(
UINT8 bSlaveAdr,
UINT32 dAddress
)
{
UINT8 bData;
#if (MCDRV_DEBUG_LEVEL>=4)
SINT32 sdRet;
McDebugLog_FuncIn("machdep_ReadI2C");
#endif
/* Please implement register read procedure */
bData = mc1n2_i2c_read_byte(McDrv_I2C_Client, dAddress);
#if (MCDRV_DEBUG_LEVEL>=4)
sdRet = (SINT32)bData;
McDebugLog_FuncOut("machdep_ReadI2C", &sdRet);
#endif
return bData;
}
/****************************************************************************
* machdep_Sleep
*
* Function:
* Sleep for a specified interval.
* Arguments:
* dSleepTime sleep time [us]
* Return:
* None
*
****************************************************************************/
void machdep_Sleep
(
UINT32 dSleepTime
)
{
unsigned long ms = dSleepTime / 1000;
unsigned long us = dSleepTime % 1000;
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_Sleep");
#endif
/* Please implement sleep procedure */
if (us)
udelay(us);
if (ms)
msleep(ms);
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_Sleep", 0);
#endif
}
/***************************************************************************
* machdep_Lock
*
* Function:
* Lock a call of the driver.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_Lock
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_Lock");
#endif
/* Please implement lock procedure */
mutex_lock(&McDrv_Mutex);
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_Lock", 0);
#endif
}
/***************************************************************************
* machdep_Unlock
*
* Function:
* Unlock a call of the driver.
* Arguments:
* none
* Return:
* none
*
****************************************************************************/
void machdep_Unlock
(
void
)
{
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncIn("machdep_Unlock");
#endif
/* Please implement unlock procedure */
mutex_unlock(&McDrv_Mutex);
#if (MCDRV_DEBUG_LEVEL>=4)
McDebugLog_FuncOut("machdep_Unlock", 0);
#endif
}
/***************************************************************************
* machdep_DebugPrint
*
* Function:
* Output debug log.
* Arguments:
* pbLogString log string buffer pointer
* Return:
* none
*
****************************************************************************/
void machdep_DebugPrint
(
UINT8* pbLogString
)
{
/* Please implement debug output procedure */
pr_debug("MCDRV: %s\n", pbLogString);
}
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