SYNOPSIS

struct drm_crtc_state * drm_atomic_get_crtc_state(struct drm_atomic_state * state, struct drm_crtc * crtc);

ARGUMENTS

state

global atomic state object

crtc

crtc to get state object for

DESCRIPTION

This function returns the crtc state for the given crtc, allocating it if needed. It will also grab the relevant crtc lock to make sure that the state is consistent.

RETURNS

Either the allocated state or the error code encoded into the pointer. When the error is EDEADLK then the w/w mutex code has detected a deadlock and the entire atomic sequence must be restarted. All other errors are fatal.

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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