intel_display_power_get — grab a power domain reference
void intel_display_power_get ( | struct drm_i915_private * dev_priv, |
enum intel_display_power_domain domain); |
This function grabs a power domain reference for domain and ensures that the
power domain and all its parents are powered up. Therefore users should only
grab a reference to the innermost power domain they need.
Any power domain reference obtained by this function must have a symmetric
call to intel_display_power_put to release the reference again.