intel_runtime_pm_put(&i915->runtime_pm, wakeref);
}
+/**
+ * intel_power_domains_sanitize_state - sanitize power domains state
+ * @i915: i915 device instance
+ *
+ * Sanitize the power domains state during driver loading and system resume.
+ * The function will disable all display power wells that BIOS has enabled
+ * without a user for it (any user for a power well has taken a reference
+ * on it by the time this function is called, after the state of all the
+ * pipe, encoder, etc. HW resources have been sanitized).
+ */
+void intel_power_domains_sanitize_state(struct drm_i915_private *i915)
+{
+ struct i915_power_domains *power_domains = &i915->power_domains;
+ struct i915_power_well *power_well;
+
+ mutex_lock(&power_domains->lock);
+
+ for_each_power_well_reverse(i915, power_well) {
+ if (power_well->desc->always_on || power_well->count ||
+ !power_well->desc->ops->is_enabled(i915, power_well))
+ continue;
+
+ drm_dbg_kms(&i915->drm,
+ "BIOS left unused %s power well enabled, disabling it\n",
+ power_well->desc->name);
+ intel_power_well_disable(i915, power_well);
+ }
+
+ mutex_unlock(&power_domains->lock);
+}
+
/**
* intel_power_domains_enable - enable toggling of display power wells
* @i915: i915 device instance
void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
enum i915_drm_suspend_mode);
void intel_power_domains_resume(struct drm_i915_private *dev_priv);
+void intel_power_domains_sanitize_state(struct drm_i915_private *dev_priv);
void intel_display_power_suspend_late(struct drm_i915_private *i915);
void intel_display_power_resume_early(struct drm_i915_private *i915);