drm_plane_helper_check_update9
Check plane update for validity
Arguments
plane
plane object to update
crtc
owning CRTC of owning plane
fb
framebuffer to flip onto plane
src
source coordinates in 16.16 fixed point
dest
integer destination coordinates
clip
integer clipping coordinates
min_scale
minimum src:dest scaling factor in 16.16 fixed point
max_scale
maximum src:dest scaling factor in 16.16 fixed point
can_position
is it legal to position the plane such that it doesn't cover the entire crtc? This will generally only be false for primary planes.
can_update_disabled
can the plane be updated while the crtc is disabled?
visible
output parameter indicating whether plane is still visible after clipping
Overview
Checks that a desired plane update is valid. Drivers that provide their own plane handling rather than helper-provided implementations may still wish to call this function to avoid duplication of error checking code.
Returns
Zero if update appears valid, error code on failure