SYNOPSIS

void intel_uncore_forcewake_get(struct drm_i915_private * dev_priv, enum forcewake_domains fw_domains);

ARGUMENTS

dev_priv

i915 device instance

fw_domains

forcewake domains to get reference on

DESCRIPTION

This function can be used get GT's forcewake domain references. Normal register access will handle the forcewake domains automatically. However if some sequence requires the GT to not power down a particular forcewake domains this function should be called at the beginning of the sequence. And subsequently the reference should be dropped by symmetric call to intel_unforce_forcewake_put. Usually caller wants all the domains to be kept awake so the fw_domains would be then FORCEWAKE_ALL.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

Daniel Vetter <[email protected]>
Intel Corporation,         
        

Contributions all over the place

Lukas Wunner <[email protected]>

vga_switcheroo documentation

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