/*
* writes a single byte or 4 bytes into the I2C device
*
* returns 0: success
* 1: error
*/
int SkI2cWrite(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
SK_U32 I2cData, /* I2C Data to write */
int I2cDev, /* I2C Device Address */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag ( 0 || I2C_BURST ) */
{
SK_OUT32(IoC, B2_I2C_DATA, I2cData);
SK_I2C_CTL(IoC, I2C_WRITE, I2cDev, I2cReg, I2cBurst);
return(SkI2cWait(pAC, IoC, I2C_WRITE));
} /* SkI2cWrite*/
/*
* writes a single byte or 4 bytes into the I2C device
*
* returns 0: success
* 1: error
*/
static int SkI2cWrite(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
SK_U32 I2cData, /* I2C Data to write */
int I2cDev, /* I2C Device Address */
int I2cDevSize, /* I2C Device Size (e.g. I2C_025K_DEV or I2C_2K_DEV) */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag */
{
SK_OUT32(IoC, B2_I2C_DATA, I2cData);
SK_I2C_CTL(IoC, I2C_WRITE, I2cDev, I2cDevSize, I2cReg, I2cBurst);
return(SkI2cWait(pAC, IoC, I2C_WRITE));
} /* SkI2cWrite*/
/*
* reads a single byte or 4 bytes from the I2C device
*
* returns the word read
*/
SK_U32 SkI2cRead(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
int I2cDev, /* I2C Device Address */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag ( 0 || I2C_BURST ) */
{
SK_U32 Data;
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_READ, I2cDev, I2cReg, I2cBurst);
if (SkI2cWait(pAC, IoC, I2C_READ)) {
w_print("I2C Transfer Timeout!\n");
}
SK_IN32(IoC, B2_I2C_DATA, &Data);
return(Data);
} /* SkI2cRead */
/*
* reads a single byte or 4 bytes from the I2C device
*
* returns the word read
*/
SK_U32 SkI2cRead(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
int I2cDev, /* I2C Device Address */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag */
{
SK_U32 Data;
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_READ, I2cDev, I2cReg, I2cBurst);
if (SkI2cWait(pAC, IoC, I2C_READ) != 0) {
w_print("%s\n", SKERR_I2C_E002MSG);
}
SK_IN32(IoC, B2_I2C_DATA, &Data);
return(Data);
} /* SkI2cRead */
/*
* Do the init state 1 initialization
*
* initialize the following register of the LM80:
* Configuration register:
* - START, noINT, activeLOW, noINT#Clear, noRESET, noCI, noGPO#, noINIT
*
* Interrupt Mask Register 1:
* - all interrupts are Disabled (0xff)
*
* Interrupt Mask Register 2:
* - all interrupts are Disabled (0xff) Interrupt modi doesn't matter.
*
* Fan Divisor/RST_OUT register:
* - Divisors set to 1 (bits 00), all others 0s.
*
* OS# Configuration/Temperature resolution Register:
* - all 0s
*
*/
static int SkI2cInit1(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC) /* I/O Context */
{
if (pAC->I2c.InitLevel != SK_INIT_DATA) {
/* ReInit not needed in I2C module */
return(0);
}
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_CFG, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
SK_OUT32(IoC, B2_I2C_DATA, 0xff);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_IMSK_1, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
SK_OUT32(IoC, B2_I2C_DATA, 0xff);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_IMSK_2, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
SK_OUT32(IoC, B2_I2C_DATA, 0x0);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_FAN_CTRL, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_TEMP_CTRL, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
SK_OUT32(IoC, B2_I2C_DATA, LM80_CFG_START);
SK_I2C_CTL(IoC, I2C_WRITE, LM80_ADDR, LM80_CFG, 0);
(void)SkI2cWait(pAC, IoC, I2C_WRITE);
/*
* MaxSens has to be initialized here, because PhyType is not
* set when performing Init Level 1
*/
switch (pAC->GIni.GP[0].PhyType) {
case SK_PHY_XMAC:
pAC->I2c.MaxSens = 5;
break;
case SK_PHY_BCOM:
pAC->I2c.SenTable[4].SenDesc = "Voltage PHY A PLL";
if (pAC->GIni.GIMacsFound == 1) {
pAC->I2c.MaxSens = 6;
}
else {
pAC->I2c.MaxSens = 8;
}
break;
case SK_PHY_LONE:
pAC->I2c.MaxSens = 5;
break;
}
#ifndef SK_DIAG
pAC->I2c.DummyReads = pAC->I2c.MaxSens;
/* Clear the interrupt source */
SK_OUT32(IoC, B2_I2C_IRQ, I2C_CLR_IRQ);
#endif /* !SK_DIAG */
/* Now we are I/O initialized */
pAC->I2c.InitLevel = SK_INIT_IO;
return(0);
} /* SkI2cInit1 */