@@ -1585,6 +1585,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
spin_lock_init(&dev_priv->dpio_lock);
mutex_init(&dev_priv->rps.hw_lock);
+ mutex_init(&dev_priv->modeset_restore_lock);
if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
dev_priv->num_pipe = 3;
@@ -468,6 +468,12 @@ static int i915_drm_freeze(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ /* ignore lid events during suspend */
+ mutex_lock(&dev_priv->modeset_restore_lock);
+ dev_priv->modeset_restore = MODESET_SUSPENDED;
+ mutex_unlock(&dev_priv->modeset_restore_lock);
+
+
drm_kms_helper_poll_disable(dev);
pci_save_state(dev->pdev);
@@ -492,9 +498,6 @@ static int i915_drm_freeze(struct drm_device *dev)
intel_opregion_fini(dev);
- /* Modeset on resume, not lid events */
- dev_priv->modeset_on_lid = 0;
-
console_lock();
intel_fbdev_set_suspend(dev, 1);
console_unlock();
@@ -569,8 +572,6 @@ static int __i915_drm_thaw(struct drm_device *dev)
intel_opregion_init(dev);
- dev_priv->modeset_on_lid = 0;
-
/*
* The console lock can be pretty contented on resume due
* to all the printk activity. Try to keep it out of the hot
@@ -583,6 +584,9 @@ static int __i915_drm_thaw(struct drm_device *dev)
schedule_work(&dev_priv->console_resume_work);
}
+ mutex_lock(&dev_priv->modeset_restore_lock);
+ dev_priv->modeset_restore = MODESET_DONE;
+ mutex_unlock(&dev_priv->modeset_restore_lock);
return error;
}
@@ -620,6 +620,12 @@ struct intel_l3_parity {
struct work_struct error_work;
};
+enum modeset_restore {
+ MODESET_ON_LID_OPEN,
+ MODESET_DONE,
+ MODESET_SUSPENDED,
+};
+
typedef struct drm_i915_private {
struct drm_device *dev;
@@ -750,9 +756,10 @@ typedef struct drm_i915_private {
unsigned long quirks;
- /* Register state */
- bool modeset_on_lid;
+ enum modeset_restore modeset_restore;
+ struct mutex modeset_restore_lock;
+ /* Register state */
struct {
/** Bridge to intel-gtt-ko */
struct intel_gtt *gtt;
@@ -492,13 +492,14 @@ static const struct dmi_system_id intel_no_modeset_on_lid[] = {
};
/*
- * Lid events. Note the use of 'modeset_on_lid':
- * - we set it on lid close, and reset it on open
+ * Lid events. Note the use of 'modeset':
+ * - we set it to MODESET_ON_LID on lid close,
+ * and set it to MODESET_DONE on open
* - we use it as a "only once" bit (ie we ignore
- * duplicate events where it was already properly
- * set/reset)
- * - the suspend/resume paths will also set it to
- * zero, since they restore the mode ("lid open").
+ * duplicate events where it was already properly set)
+ * - the suspend/resume paths will set it to
+ * MODESET_ON_RESUME and ignore the lid open event,
+ * because they restore the mode ("lid open").
*/
static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
void *unused)
@@ -512,6 +513,9 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
if (dev->switch_power_state != DRM_SWITCH_POWER_ON)
return NOTIFY_OK;
+ mutex_lock(&dev_priv->modeset_restore_lock);
+ if (dev_priv->modeset_restore == MODESET_SUSPENDED)
+ goto exit;
/*
* check and update the status of LVDS connector after receiving
* the LID nofication event.
@@ -520,21 +524,24 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
/* Don't force modeset on machines where it causes a GPU lockup */
if (dmi_check_system(intel_no_modeset_on_lid))
- return NOTIFY_OK;
+ goto exit;
if (!acpi_lid_open()) {
- dev_priv->modeset_on_lid = 1;
- return NOTIFY_OK;
+ /* do modeset on next lid open event */
+ dev_priv->modeset_restore = MODESET_ON_LID_OPEN;
+ goto exit;
}
- if (!dev_priv->modeset_on_lid)
- return NOTIFY_OK;
-
- dev_priv->modeset_on_lid = 0;
+ if (dev_priv->modeset_restore == MODESET_DONE)
+ goto exit;
mutex_lock(&dev->mode_config.mutex);
intel_modeset_setup_hw_state(dev, true);
mutex_unlock(&dev->mode_config.mutex);
+ dev_priv->modeset_restore = MODESET_DONE;
+
+exit:
+ mutex_unlock(&dev_priv->modeset_restore_lock);
return NOTIFY_OK;
}