Name

drm_helper_disable_unused_functions — disable unused objects

Synopsis

void drm_helper_disable_unused_functions (struct drm_device * dev);
 

Arguments

dev

DRM device

Description

This function walks through the entire mode setting configuration of dev. It will remove any CRTC links of unused encoders and encoder links of disconnected connectors. Then it will disable all unused encoders and CRTCs either by calling their disable callback if available or by calling their dpms callback with DRM_MODE_DPMS_OFF.

NOTE

This function is part of the legacy modeset helper library and will cause major confusion with atomic drivers. This is because atomic helpers guarantee to never call ->disable hooks on a disabled function, or ->enable hooks on an enabled functions. drm_helper_disable_unused_functions on the other hand throws such guarantees into the wind and calls disable hooks unconditionally on unused functions.