/*
** Function Name : process_MFC_PowerDown
**
** Function Description : This function Power down MFC.
*/
CEDEVICE_POWER_STATE
process_MFC_PowerDown(DWORD OpenHandle, PCEDEVICE_POWER_STATE mfc_pwr_state)
{
unsigned int nNumOfInstance = 0;
if ( *mfc_pwr_state == D0)
{
is_mfc_on = FALSE;
// Check if MFC is being used
// and change the MFC instance state to PowerOff
for (int inst_no = 0; inst_no < MFC_NUM_INSTANCES_MAX; inst_no++)
{
MFCInstCtx *mfcinst_ctx = MFCInst_GetCtx(inst_no);
if (mfcinst_ctx)
{
nNumOfInstance++;
LOG_MSG(LOG_TRACE, "MFC_IOControl", "[MFC IOCTL_POWER_SET] MFC State = 0x%X \r\n",(DWORD) (MFCINST_STATE(mfcinst_ctx)));
// On Power Down, the MFC instance is invalidated.
// Then the MFC operations (DEC_EXE, ENC_EXE, etc.) will not be performed
// until it is validated by entering Power Up state transition.
MFCInst_PowerOffState(mfcinst_ctx);
if (MFCINST_STATE_CHECK(mfcinst_ctx, MFCINST_STATE_CREATED) || MFCINST_STATE_CHECK(mfcinst_ctx, MFCINST_STATE_DELETED))
{
LOG_MSG(LOG_TRACE, "MFC_IOControl", "[MFC IOCTL_POWER_SET] MFC doesn't working!!! MFC State = 0x%X \r\n",(DWORD) (MFCINST_STATE(mfcinst_ctx)));
}
else
{
is_mfc_on = TRUE;
}
}
}
if (is_mfc_on)
{
Mfc_Clk_On();
MFC_Sleep();
// Clock & Power off the MFC block if they are on.
Mfc_Clk_Off();
LOG_MSG(LOG_TRACE, "MFC_IOControl", "[MFC IOCTL_POWER_SET] POWER DOWN, handle = 0x%X \r\n",(DWORD) OpenHandle);
}
}
*mfc_pwr_state = D4; // MFC power state is now changed to D0(Power On) state.
RETAILMSG(1, (L"[MFC] Sleep! (NumOfInstance=%d) \r\n", nNumOfInstance));
return *mfc_pwr_state;
}
static int s3c_mfc_suspend(struct platform_device *dev, pm_message_t state)
{
MFCInstCtx *mfcinst_ctx;
int inst_no;
int is_mfc_on = 0;
int i, index = 0;
unsigned int dwMfcBase;
MFC_Mutex_Lock();
is_mfc_on = 0;
// 1. Power Off state
// Invalidate all the MFC Instances
for (inst_no = 0; inst_no < MFC_NUM_INSTANCES_MAX; inst_no++) {
mfcinst_ctx = MFCInst_GetCtx(inst_no);
if (mfcinst_ctx) {
is_mfc_on = 1;
// On Power Down, the MFC instance is invalidated.
// Then the MFC operations (DEC_EXE, ENC_EXE, etc.) will not be performed
// until it is validated by entering Power up state transition
MFCInst_PowerOffState(mfcinst_ctx);
printk(KERN_INFO "MFC_Suspend %d-th instance is invalidated\n", inst_no);
}
}
/* 2. Command MFC sleep and save MFC SFR */
if (is_mfc_on) {
dwMfcBase = (unsigned int)GetMfcSfrVirAddr();
for(i=SAVE_START_ADDR; i <= SAVE_END_ADDR; i+=4)
{
mfc_save[index] = (unsigned int)MFC_READ_REG(dwMfcBase + i);
index++;
}
MFC_Sleep();
}
#ifdef USE_MFC_DOMAIN_GATING
{
/* 3. Disable MFC clock */
int tmp_openhandle_count = _openhandle_count;
while (tmp_openhandle_count-- > 0)
{
CLOCK_DISABLE;
}
}
#endif /* USE_MFC_DOMAIN_GATING */
/*
// 4. MFC Power Off(Domain V)
mfc_pwr = readl(S3C_NORMAL_CFG);
mfc_pwr &= ~(1<<9);
printk("mfc_pwr : 0x%X\n", mfc_pwr);
__raw_writel(mfc_pwr, S3C_NORMAL_CFG);
*/
MFC_Mutex_Release();
return 0;
}