enum PVRSRV_ERROR PVRSRVSystemPrePowerStateKM(
enum PVR_POWER_STATE eNewPowerState)
{
enum PVRSRV_ERROR eError;
struct SYS_DATA *psSysData;
enum PVR_POWER_STATE eNewDevicePowerState;
eError = SysAcquireData(&psSysData);
if (eError != PVRSRV_OK)
return eError;
eError = PVRSRVPowerLock(KERNEL_ID, IMG_TRUE);
if (eError != PVRSRV_OK)
return eError;
if (_IsSystemStatePowered(eNewPowerState) !=
_IsSystemStatePowered(psSysData->eCurrentPowerState)) {
if (_IsSystemStatePowered(eNewPowerState))
eNewDevicePowerState = PVRSRV_POWER_Unspecified;
else
eNewDevicePowerState = PVRSRV_POWER_STATE_D3;
eError = PVRSRVDevicePrePowerStateKM(IMG_TRUE, 0,
eNewDevicePowerState);
if (eError != PVRSRV_OK)
goto ErrorExit;
}
if (eNewPowerState != psSysData->eCurrentPowerState) {
eError = SysSystemPrePowerState(eNewPowerState);
if (eError != PVRSRV_OK)
goto ErrorExit;
}
return eError;
ErrorExit:
PVR_DPF(PVR_DBG_ERROR, "PVRSRVSystemPrePowerStateKM: "
"Transition from %d to %d FAILED 0x%x",
psSysData->eCurrentPowerState, eNewPowerState, eError);
psSysData->eFailedPowerState = eNewPowerState;
PVRSRVPowerUnlock(KERNEL_ID);
return eError;
}
IMG_EXPORT
PVRSRV_ERROR PVRSRVSystemPrePowerStateKM(PVRSRV_SYS_POWER_STATE eNewSysPowerState)
{
PVRSRV_ERROR eError;
SYS_DATA *psSysData;
PVRSRV_DEV_POWER_STATE eNewDevicePowerState;
SysAcquireData(&psSysData);
eError = PVRSRVPowerLock(KERNEL_ID, IMG_TRUE);
if(eError != PVRSRV_OK)
{
return eError;
}
if (_IsSystemStatePowered(eNewSysPowerState) !=
_IsSystemStatePowered(psSysData->eCurrentPowerState))
{
if (_IsSystemStatePowered(eNewSysPowerState))
{
eNewDevicePowerState = PVRSRV_DEV_POWER_STATE_DEFAULT;
}
else
{
eNewDevicePowerState = PVRSRV_DEV_POWER_STATE_OFF;
}
eError = PVRSRVDevicePrePowerStateKM(IMG_TRUE, 0, eNewDevicePowerState);
if (eError != PVRSRV_OK)
{
goto ErrorExit;
}
}
if (eNewSysPowerState != psSysData->eCurrentPowerState)
{
eError = SysSystemPrePowerState(eNewSysPowerState);
if (eError != PVRSRV_OK)
{
goto ErrorExit;
}
}
return eError;
ErrorExit:
PVR_DPF((PVR_DBG_ERROR,
"PVRSRVSystemPrePowerStateKM: Transition from %d to %d FAILED 0x%x",
psSysData->eCurrentPowerState, eNewSysPowerState, eError));
psSysData->eFailedPowerState = eNewSysPowerState;
PVRSRVPowerUnlock(KERNEL_ID);
return eError;
}