/*
 * Copyright © 2006 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Eric Anholt <eric@anholt.net>
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "xf86.h"
#include "i830.h"

void
I830CRTDPMS(ScrnInfoPtr pScrn, I830OutputPtr output, int mode)
{
    I830Ptr pI830 = I830PTR(pScrn);
    CARD32 temp;

    temp = INREG(ADPA);
    temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);

    switch(mode) {
    case DPMSModeOn:
	break;
    case DPMSModeStandby:
	temp |= ADPA_HSYNC_CNTL_DISABLE;
	break;
    case DPMSModeSuspend:
	temp |= ADPA_VSYNC_CNTL_DISABLE;
	break;
    case DPMSModeOff:
	temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
	break;
    }

    OUTREG(ADPA, temp);
}

void
I830CRTSave(ScrnInfoPtr pScrn, I830OutputPtr output)
{
    I830Ptr pI830 = I830PTR(pScrn);

    pI830->saveADPA = INREG(ADPA);
}

void
I830CRTRestore(ScrnInfoPtr pScrn, I830OutputPtr output)
{
    I830Ptr pI830 = I830PTR(pScrn);

    OUTREG(ADPA, pI830->saveADPA);
}