/*
* sii164GetDeviceID
* This function gets the device ID of the DVI controller chip.
*
* Output:
* Device ID
*/
unsigned short sii164GetDeviceID(void)
{
unsigned short deviceID;
deviceID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_HIGH) << 8) |
(unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_LOW);
return deviceID;
}
/*
* sii164GetVendorID
* This function gets the vendor ID of the DVI controller chip.
*
* Output:
* Vendor ID
*/
unsigned short sii164GetVendorID(void)
{
unsigned short vendorID;
vendorID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_HIGH) << 8) |
(unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_LOW);
return vendorID;
}
/* READ *******************************************/
uint8_t HardwareI2C::read(uint8_t address, uint8_t registerAddress, uint8_t numberBytes, uint8_t* dataBuffer)
{
uint8_t rbuff[1];
rbuff[0] = registerAddress;
return i2cReadReg(this->i2c_d, address, rbuff, sizeof(rbuff), dataBuffer, numberBytes);
}
/*
* sii164SelectHotPlugDetectionMode
* This function selects the mode of the hot plug detection.
*/
static void sii164SelectHotPlugDetectionMode(
sii164_hot_plug_mode_t hotPlugMode
)
{
unsigned char detectReg;
detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & ~SII164_DETECT_MONITOR_SENSE_OUTPUT_FLAG;
switch (hotPlugMode) {
case SII164_HOTPLUG_DISABLE:
detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HIGH;
break;
case SII164_HOTPLUG_USE_MDI:
detectReg &= ~SII164_DETECT_INTERRUPT_MASK;
detectReg |= SII164_DETECT_INTERRUPT_BY_HTPLG_PIN;
detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_MDI;
break;
case SII164_HOTPLUG_USE_RSEN:
detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_RSEN;
break;
case SII164_HOTPLUG_USE_HTPLG:
detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HTPLG;
break;
}
i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg);
}
/*
* sii164ClearInterrupt
* Clear the hot plug interrupt.
*/
void sii164ClearInterrupt(void)
{
unsigned char detectReg;
/* Clear the MDI interrupt */
detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT);
i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg | SII164_DETECT_MONITOR_STATE_CLEAR);
}
/*
* sii164CheckInterrupt
* Checks if interrupt has occurred.
*
* Output:
* 0 - No interrupt
* 1 - Interrupt occurs
*/
unsigned char sii164CheckInterrupt(void)
{
unsigned char detectReg;
detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_MONITOR_STATE_MASK;
if (detectReg == SII164_DETECT_MONITOR_STATE_CHANGE)
return 1;
else
return 0;
}
/*
* sii164IsConnected
* Check if the DVI Monitor is connected.
*
* Output:
* 0 - Not Connected
* 1 - Connected
*/
unsigned char sii164IsConnected(void)
{
unsigned char hotPlugValue;
hotPlugValue = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_HOT_PLUG_STATUS_MASK;
if (hotPlugValue == SII164_DETECT_HOT_PLUG_STATUS_ON)
return 1;
else
return 0;
}
/*
* sii164EnableHotPlugDetection
* This function enables the Hot Plug detection.
*
* enableHotPlug - Enable (=1) / disable (=0) Hot Plug detection
*/
void sii164EnableHotPlugDetection(
unsigned char enableHotPlug
)
{
unsigned char detectReg;
detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT);
/* Depending on each DVI controller, need to enable the hot plug based on each
individual chip design. */
if (enableHotPlug != 0)
sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_USE_MDI);
else
sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_DISABLE);
}
/*
* sii164SetPower
* This function sets the power configuration of the DVI Controller Chip.
*
* Input:
* powerUp - Flag to set the power down or up
*/
void sii164SetPower(
unsigned char powerUp
)
{
unsigned char config;
config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION);
if (powerUp == 1) {
/* Power up the chip */
config &= ~SII164_CONFIGURATION_POWER_MASK;
config |= SII164_CONFIGURATION_POWER_NORMAL;
i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config);
} else {
/* Power down the chip */
config &= ~SII164_CONFIGURATION_POWER_MASK;
config |= SII164_CONFIGURATION_POWER_DOWN;
i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config);
}
}
int sii9022xInitChip()
{
int rcc,retries = 10;
swI2CInit(DEFAULT_I2C_SCL, DEFAULT_I2C_SDA);
/* enter TPI mode */
i2cWriteReg(SII9022A_I2C_ADDRESS,0xc7,0);
do{
msleep(1);
rcc = i2cReadReg(SII9022A_I2C_ADDRESS,0x1B);
}while((rcc != SII9022_DEVICE_ID) && retries--);
if(rcc != SII9022_DEVICE_ID){
printk("cannot detect sii9022a chip:rcc=%x\n",rcc);
return -1;
}
return 0;
}
/*
* sii164InitChip
* This function initialize and detect the DVI controller chip.
*
* Input:
* edgeSelect - Edge Select:
* 0 = Input data is falling edge latched (falling edge
* latched first in dual edge mode)
* 1 = Input data is rising edge latched (rising edge
* latched first in dual edge mode)
* busSelect - Input Bus Select:
* 0 = Input data bus is 12-bits wide
* 1 = Input data bus is 24-bits wide
* dualEdgeClkSelect - Dual Edge Clock Select
* 0 = Input data is single edge latched
* 1 = Input data is dual edge latched
* hsyncEnable - Horizontal Sync Enable:
* 0 = HSYNC input is transmitted as fixed LOW
* 1 = HSYNC input is transmitted as is
* vsyncEnable - Vertical Sync Enable:
* 0 = VSYNC input is transmitted as fixed LOW
* 1 = VSYNC input is transmitted as is
* deskewEnable - De-skewing Enable:
* 0 = De-skew disabled
* 1 = De-skew enabled
* deskewSetting - De-skewing Setting (increment of 260psec)
* 0 = 1 step --> minimum setup / maximum hold
* 1 = 2 step
* 2 = 3 step
* 3 = 4 step
* 4 = 5 step
* 5 = 6 step
* 6 = 7 step
* 7 = 8 step --> maximum setup / minimum hold
* continuousSyncEnable- SYNC Continuous:
* 0 = Disable
* 1 = Enable
* pllFilterEnable - PLL Filter Enable
* 0 = Disable PLL Filter
* 1 = Enable PLL Filter
* pllFilterValue - PLL Filter characteristics:
* 0~7 (recommended value is 4)
*
* Output:
* 0 - Success
* -1 - Fail.
*/
long sii164InitChip(
unsigned char edgeSelect,
unsigned char busSelect,
unsigned char dualEdgeClkSelect,
unsigned char hsyncEnable,
unsigned char vsyncEnable,
unsigned char deskewEnable,
unsigned char deskewSetting,
unsigned char continuousSyncEnable,
unsigned char pllFilterEnable,
unsigned char pllFilterValue
)
{
unsigned char config;
/* Initialize the i2c bus */
#ifdef USE_HW_I2C
/* Use fast mode. */
sm750_hw_i2c_init(1);
#else
sm750_sw_i2c_init(DEFAULT_I2C_SCL, DEFAULT_I2C_SDA);
#endif
/* Check if SII164 Chip exists */
if ((sii164GetVendorID() == SII164_VENDOR_ID) && (sii164GetDeviceID() == SII164_DEVICE_ID)) {
/*
* Initialize SII164 controller chip.
*/
/* Select the edge */
if (edgeSelect == 0)
config = SII164_CONFIGURATION_LATCH_FALLING;
else
config = SII164_CONFIGURATION_LATCH_RISING;
/* Select bus wide */
if (busSelect == 0)
config |= SII164_CONFIGURATION_BUS_12BITS;
else
config |= SII164_CONFIGURATION_BUS_24BITS;
/* Select Dual/Single Edge Clock */
if (dualEdgeClkSelect == 0)
config |= SII164_CONFIGURATION_CLOCK_SINGLE;
else
config |= SII164_CONFIGURATION_CLOCK_DUAL;
/* Select HSync Enable */
if (hsyncEnable == 0)
config |= SII164_CONFIGURATION_HSYNC_FORCE_LOW;
else
config |= SII164_CONFIGURATION_HSYNC_AS_IS;
/* Select VSync Enable */
if (vsyncEnable == 0)
config |= SII164_CONFIGURATION_VSYNC_FORCE_LOW;
else
config |= SII164_CONFIGURATION_VSYNC_AS_IS;
i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config);
/*
* De-skew enabled with default 111b value.
* This fixes some artifacts problem in some mode on board 2.2.
* Somehow this fix does not affect board 2.1.
*/
if (deskewEnable == 0)
config = SII164_DESKEW_DISABLE;
else
config = SII164_DESKEW_ENABLE;
switch (deskewSetting) {
case 0:
config |= SII164_DESKEW_1_STEP;
break;
case 1:
config |= SII164_DESKEW_2_STEP;
break;
case 2:
config |= SII164_DESKEW_3_STEP;
break;
case 3:
config |= SII164_DESKEW_4_STEP;
break;
case 4:
config |= SII164_DESKEW_5_STEP;
break;
case 5:
config |= SII164_DESKEW_6_STEP;
break;
case 6:
config |= SII164_DESKEW_7_STEP;
break;
case 7:
config |= SII164_DESKEW_8_STEP;
break;
}
i2cWriteReg(SII164_I2C_ADDRESS, SII164_DESKEW, config);
/* Enable/Disable Continuous Sync. */
if (continuousSyncEnable == 0)
config = SII164_PLL_FILTER_SYNC_CONTINUOUS_DISABLE;
else
config = SII164_PLL_FILTER_SYNC_CONTINUOUS_ENABLE;
/* Enable/Disable PLL Filter */
if (pllFilterEnable == 0)
config |= SII164_PLL_FILTER_DISABLE;
else
config |= SII164_PLL_FILTER_ENABLE;
/* Set the PLL Filter value */
config |= ((pllFilterValue & 0x07) << 1);
i2cWriteReg(SII164_I2C_ADDRESS, SII164_PLL, config);
/* Recover from Power Down and enable output. */
config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION);
config |= SII164_CONFIGURATION_POWER_NORMAL;
i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config);
return 0;
}
/* Return -1 if initialization fails. */
return -1;
}
static void dump9022a(uint8_t reg){
#if 1
printk("%x=%x\n",reg,i2cReadReg(SII9022A_I2C_ADDRESS,reg));
#endif
}
