@@ -4469,6 +4469,7 @@ static void intel_idle_update(struct work_struct *work)
struct drm_device *dev = dev_priv->dev;
struct drm_crtc *crtc;
struct intel_crtc *intel_crtc;
+ int enabled = 0;
if (!i915_powersave)
return;
@@ -4477,21 +4478,22 @@ static void intel_idle_update(struct work_struct *work)
i915_update_gfx_val(dev_priv);
- if (IS_I945G(dev) || IS_I945GM(dev)) {
- DRM_DEBUG_DRIVER("enable memory self refresh on 945\n");
- I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
- }
-
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
/* Skip inactive CRTCs */
if (!crtc->fb)
continue;
+ enabled++;
intel_crtc = to_intel_crtc(crtc);
if (!intel_crtc->busy)
intel_decrease_pllclock(crtc);
}
+ if ((enabled == 1) && (IS_I945G(dev) || IS_I945GM(dev))) {
+ DRM_DEBUG_DRIVER("enable memory self refresh on 945\n");
+ I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
+ }
+
mutex_unlock(&dev->struct_mutex);
}