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/* i915_pm.c -- Power management support for the i915 -*- linux-c -*-
*/
/**************************************************************************
*
* Copyright 2004 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
**************************************************************************/
#define __NO_VERSION__
#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
#include "i915_drv.h"
/**
* Set DPMS mode.
*/
static int i915_set_dpms(drm_device_t *dev, int mode)
{
drm_i915_private_t *dev_priv =
(drm_i915_private_t *)dev->dev_private;
unsigned sr01, adpa, ppcr, dvob, dvoc, lvds;
DRM_DEBUG("%s mode=%d\n", __FUNCTION__, mode);
I915_WRITE( SRX_INDEX, SR01 );
sr01 = I915_READ( SRX_DATA );
adpa = I915_READ( ADPA );
ppcr = I915_READ( PPCR );
dvoc = I915_READ( DVOC );
dvob = I915_READ( DVOB );
lvds = I915_READ( LVDS );
switch(mode) {
case 0:
/* On */
sr01 &= ~SR01_SCREEN_OFF;
adpa = (adpa & ADPA_DPMS_MASK) | ADPA_DPMS_ON;
#if 0
I915_WRITE( LVDS, lvds | LVDS_ON ); /* Power on LVDS */
#endif
I915_WRITE( PPCR, dev_priv->ppcr ); /* Power up panel */
I915_WRITE( DVOC, dev_priv->dvoc );
I915_WRITE( DVOB, dev_priv->dvob );
break;
case 1:
/* Standby */
sr01 |= SR01_SCREEN_OFF;
adpa = (adpa & ADPA_DPMS_MASK) | ADPA_DPMS_STANDBY;
I915_WRITE( PPCR, ppcr & ~PPCR_ON ); /* Power off panel*/
#if 0
I915_WRITE( LVDS, lvds & ~LVDS_ON ); /* Power off LVDS */
#endif
I915_WRITE( DVOC, dvoc & ~DVOC_ON );
I915_WRITE( DVOB, dvob & ~DVOB_ON );
break;
case 2:
/* Suspend */
sr01 |= SR01_SCREEN_OFF;
adpa = (adpa & ADPA_DPMS_MASK) | ADPA_DPMS_SUSPEND;
I915_WRITE( PPCR, ppcr & ~PPCR_ON ); /* Power off panel*/
#if 0
I915_WRITE( LVDS, lvds & ~LVDS_ON ); /* Power off LVDS */
#endif
I915_WRITE( DVOC, dvoc & ~DVOC_ON );
I915_WRITE( DVOB, dvob & ~DVOB_ON );
break;
case 3:
/* Off */
sr01 |= SR01_SCREEN_OFF;
adpa = (adpa & ADPA_DPMS_MASK) | ADPA_DPMS_OFF;
I915_WRITE( PPCR, ppcr & ~PPCR_ON ); /* Power off panel*/
#if 0
I915_WRITE( LVDS, lvds & ~LVDS_ON ); /* Power off LVDS */
#endif
I915_WRITE( DVOC, dvoc & ~DVOC_ON );
I915_WRITE( DVOB, dvob & ~DVOB_ON );
break;
}
I915_WRITE( SRX_DATA, sr01 );
I915_WRITE( ADPA, adpa );
return 0;
}
int i915_suspend( struct pci_dev *pdev, unsigned state )
{
drm_device_t *dev = (drm_device_t *)pci_get_drvdata(pdev);
DRM_DEBUG("%s state=%d\n", __FUNCTION__, state);
switch(state) {
case 0:
/* D0: set DPMS mode on */
i915_set_dpms(dev, 0);
break;
case 1:
/* D1: set DPMS mode standby */
i915_set_dpms(dev, 1);
break;
case 2:
/* D2: set DPMS mode suspend */
i915_set_dpms(dev, 2);
break;
case 3:
/* D3: set DPMS mode off */
i915_set_dpms(dev, 3);
break;
}
return 0;
}
int i915_resume( struct pci_dev *pdev )
{
drm_device_t *dev = (drm_device_t *)pci_get_drvdata(pdev);
/* D0: set DPMS mode on */
i915_set_dpms(dev, 0);
return 0;
}
int i915_power( drm_device_t *dev, unsigned int state )
{
DRM_DEBUG("%s state=%d\n", __FUNCTION__, state);
/* D0: set DPMS mode on */
i915_set_dpms(dev, state);
return 0;
}
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