//------------------------------------------------------------------------------
//
// Function: disable_lcd_backlight
//
// This function disables the backlight for the LCD controller
//
UINT32 disable_lcd_backlight( void )
{
HANDLE hTwl;
//OALMSG(OAL_INFO, (L"disable_lcd_backlight+\r\n"));
// Enable LEDA on TPS659XX
hTwl = TWLOpen();
#ifdef BSP_EVM2
if(!IsLVDSMode())
TWLWriteByteReg(hTwl, TWL_LEDEN, 0x00);
#else
// The hardware design is completely backwards. In order
// to disable the LED control signal, the LEDPWM signal must
// be enabled 100%
// Set LEDAON, LEDAPWM
TWLWriteByteReg(hTwl, TWL_LEDEN, 0x11);
// Set PWM registers to same value to trigger 100% duty cycle
TWLWriteByteReg(hTwl, TWL_PWMAOFF, 0x00);
TWLWriteByteReg(hTwl, TWL_PWMAON, 0x00);
#endif
TWLClose(hTwl);
//OALMSG(OAL_INFO, (L"disable_lcd_backlight-\r\n"));
return ERROR_SUCCESS;
}
//------------------------------------------------------------------------------
//
// Function: enable_lcd_backlight
//
// This function enables the backlight for the LCD controller
//
UINT32 enable_lcd_backlight( void )
{
void* hTwl;
//OALMSG(OAL_INFO, (L"enable_lcd_backlight+\r\n"));
// Enable LEDA on TPS659XX
hTwl = TWLOpen();
#ifdef BSP_EVM2
TWLWriteByteReg(hTwl, TWL_LEDEN, 0x11);
// Set PWM registers to same value to trigger 100% duty cycle
//TWLWriteByteReg(hTwl, TWL_PWMAOFF, 0x00);
//TWLWriteByteReg(hTwl, TWL_PWMAON, 0x00);
if(!IsLVDSMode())
{
TWLWriteByteReg(hTwl, TWL_PWMAOFF, 0x20);
TWLWriteByteReg(hTwl, TWL_PWMAON, 0x01);
}
else
{
TWLWriteByteReg(hTwl, TWL_PWMAOFF, 0x7F);
TWLWriteByteReg(hTwl, TWL_PWMAON, 0x7E);
}
#else
// The hardware design is completely backwards.
// In order to get 100% brightness, the LEDPWM must
// be disabled.
// Clear LEDAON, LEDAPWM
TWLWriteByteReg(hTwl, TWL_LEDEN, 0x00);
#endif
TWLClose(hTwl);
//OALMSG(OAL_INFO, (L"enable_lcd_backlight-\r\n"));
return ERROR_SUCCESS;
}
//------------------------------------------------------------------------------
//
// Function: KPD_Deinit
//
// Called by device manager to uninitialize device.
//
BOOL KPD_Deinit(DWORD context)
{
BOOL rc = FALSE;
KeypadDevice_t *pDevice = (KeypadDevice_t*)context;
DEBUGMSG(ZONE_FUNCTION, (L"+KPD_Deinit(0x%08x)\r\n", context));
// Check if we get correct context
if ((pDevice == NULL) || (pDevice->cookie != KPD_DEVICE_COOKIE))
{
DEBUGMSG (ZONE_ERROR, (L"ERROR: KPD_Deinit: "
L"Incorrect context parameter\r\n"
));
goto cleanUp;
}
// Signal stop to threads
pDevice->intrThreadExit = TRUE;
// Close interrupt thread
if (pDevice->hIntrThreadKeypad != NULL)
{
// Set event to wake it
SetEvent(pDevice->hIntrEventKeypad);
// Wait until thread exits
WaitForSingleObject(pDevice->hIntrThreadKeypad, INFINITE);
// Close handle
CloseHandle(pDevice->hIntrThreadKeypad);
}
// Close interrupt thread
if( pDevice->hLightThread )
{
// Set event to wake it
SetEvent(pDevice->hKeypressEvent);
// Wait until thread exits
WaitForSingleObject(pDevice->hLightThread, INFINITE);
// Close handle
CloseHandle(pDevice->hLightThread);
}
// Close TWL driver
if (pDevice->hTWL != NULL)
{
TWLInterruptMask(pDevice->hTWL, TWL_INTR_ITKPI, TRUE);
if (pDevice->hIntrEventKeypad != NULL)
{
TWLInterruptDisable(pDevice->hTWL, TWL_INTR_ITKPI);
}
TWLClose(pDevice->hTWL);
}
// Close interrupt handler
if (pDevice->hIntrEventKeypad != NULL) CloseHandle(pDevice->hIntrEventKeypad);
if (pDevice->hKeypressEvent != NULL) CloseHandle(pDevice->hKeypressEvent);
// Free device structure
LocalFree(pDevice);
// Done
rc = TRUE;
cleanUp:
DEBUGMSG(ZONE_FUNCTION, (L"-KPD_Deinit(rc = %d)\r\n", rc));
return rc;
}
