示例#1
0
/*
** 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;
}
示例#2
0
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;
}