• Daniel Vetter's avatar
    drm: remove DRM_FORMAT_NV12MT · 083500ba
    Daniel Vetter authored
    So this has been merged originally in
    
    commit 83052d4d
    Author: Seung-Woo Kim <sw0312.kim@samsung.com>
    Date:   Thu Dec 15 15:40:55 2011 +0900
    
        drm: Add multi buffer plane pixel formats
    
    which hasn't seen a lot of review really. The problem is that it's not
    a real pixel format, but just a different way to lay out NV12 pixels
    in macroblocks, i.e. a tiling format.
    
    The new way of doing this is with the soon-to-be-merged fb modifiers.
    
    This was brough up in some long irc discussion around the entire
    topic, as an example of where things have gone wrong. Luckily we can
    correct the mistake:
    - The kms side support for NV12MT is all dead code because
      format_check in drm_crtc.c never accepted NV12MT.
    - The gem side for the gsc support doesn't look better: The code
      forgets to set the pixel format and makes a big mess with the tiling
      mode bits, inadvertedly setting them all.
    
    Conclusion: This never really worked (at least not in upstream) and
    hence we can safely correct our mistake here.
    
    Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
    Cc: Inki Dae <inki.dae@samsung.com>
    Cc: Kyungmin Park <kyungmin.park@samsung.com>
    Cc: Rob Clark <robclark@freedesktop.org>
    Cc: Daniel Stone <daniel@fooishbar.org>
    Cc: Damien Lespiau <damien.lespiau@intel.com>
    Reviewed-by: default avatarRob Clark <robclark@freedesktop.org>
    Reviewed-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
    Acked-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
    Acked-by: default avatarSeung-Woo Kim <sw0312.kim@samsung.com>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
    083500ba
drm_fourcc.h 7.8 KB