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c103d1cfb3
When we expose non-overlay planes to userspace, they will become accessible via standard userspace plane API's. We should be able to handle the standard plane operations against primary planes in a generic way via the modeset handler. Drivers that can program primary planes more efficiently, that want to use their own primary plane structure to track additional information, or that don't have the limitations assumed by the helpers are free to provide their own implementation of some or all of these handlers. v3: Tweak kerneldoc formatting slightly to avoid ugliness v2: - Move plane helpers to a new file (drm_plane_helper.c) - Tighten checks on update handler (check for scaling, CRTC coverage, subpixel positioning) - Pass proper panning parameters to modeset interface - Disallow disabling primary plane (and thus CRTC) if other planes are still active on the CRTC. - Use a minimal format list that should work on all hardware/drivers. Drivers may call this function with a more accurate plane list to enable additional formats they can support. Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Rob Clark <robdclark@gmail.com> |
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