int i915_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;
#ifndef __NetBSD__ /* pmf handles this for us. */
if (pci_enable_device(dev->pdev))
return -EIO;
#endif
pci_set_master(dev->pdev);
intel_gt_reset(dev);
/*
* Platforms with opregion should have sane BIOS, older ones (gen3 and
* earlier) need this since the BIOS might clear all our scratch PTEs.
*/
if (drm_core_check_feature(dev, DRIVER_MODESET) &&
!dev_priv->opregion.header) {
mutex_lock(&dev->struct_mutex);
i915_gem_restore_gtt_mappings(dev);
mutex_unlock(&dev->struct_mutex);
}
ret = __i915_drm_thaw(dev);
if (ret)
return ret;
drm_kms_helper_poll_enable(dev);
return 0;
}
int i915_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;
if (pci_enable_device(dev->pdev))
return -EIO;
pci_set_master(dev->pdev);
#ifdef CONFIG_I915_VGT
if (i915_host_mediate) {
int error = vgt_resume(dev->pdev);
if (error)
return error;
}
#endif
/*
* Platforms with opregion should have sane BIOS, older ones (gen3 and
* earlier) need to restore the GTT mappings since the BIOS might clear
* all our scratch PTEs.
*/
ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
if (ret)
return ret;
drm_kms_helper_poll_enable(dev);
return 0;
}
static int i915_drm_thaw(struct drm_device *dev)
{
if (drm_core_check_feature(dev, DRIVER_MODESET))
i915_check_and_clear_faults(dev);
return __i915_drm_thaw(dev, true);
}
/*
* The console lock can be pretty contented on resume due
* to all the printk activity. Try to keep it out of the hot
* path of resume if possible.
*/
if (console_trylock()) {
intel_fbdev_set_suspend(dev, 0);
console_unlock();
} else {
schedule_work(&dev_priv->console_resume_work);
}
#endif
return error;
}
#ifndef __NetBSD__ /* XXX freeze/thaw */
static int i915_drm_thaw(struct drm_device *dev)
{
int error = 0;
intel_gt_reset(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
mutex_lock(&dev->struct_mutex);
i915_gem_restore_gtt_mappings(dev);
mutex_unlock(&dev->struct_mutex);
}
__i915_drm_thaw(dev);
return error;
}
int i915_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
/*
* Platforms with opregion should have sane BIOS, older ones (gen3 and
* earlier) need to restore the GTT mappings since the BIOS might clear
* all our scratch PTEs.
*/
ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
if (ret)
return ret;
drm_kms_helper_poll_enable(dev);
return 0;
}
static int i915_drm_thaw(struct drm_device *dev)
{
int error = 0;
intel_uncore_sanitize(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
mutex_lock(&dev->struct_mutex);
i915_gem_restore_gtt_mappings(dev);
mutex_unlock(&dev->struct_mutex);
} else if (drm_core_check_feature(dev, DRIVER_MODESET))
i915_check_and_clear_faults(dev);
__i915_drm_thaw(dev);
return error;
}
