[Bug 107396] [CI][BAT] igt at debugfs_test@read_all_entries - dmesg-warn - Unclaimed read from register 0x70278

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107396

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 12a6c931beffeaaa350ef562e91e49918b4b3e68
Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
Date:   Tue Jul 31 17:46:14 2018 -0700

    drm/i915/icl: avoid unclaimed PLANE_NV12_BUF_CFG register

    We don't have proper watermark NV12 support on ICL due to differences
    in how it should be implemented. In commit 234059da0f33
    ("drm/i915/icl: NV12 y-plane ddb is not in same plane") we avoided
    writing the non-existent PLANE_NV12_BUF_CFG registers but we forgot to
    also avoid them on the hardware state readout. While the code is still
    not correct, at least now we can avoid unclaimed register error
    messages when dealing with RGB formats, which makes CI happier.

    Also add some FIXME comments in order to make it even more clear that
    there's still work to do.

    References: commit 234059da0f33 ("drm/i915/icl: NV12 y-plane ddb is
     not in same plane")
    Cc: Mahesh Kumar <mahesh1.kumar at intel.com>
    Reviewed-by: Mahesh Kumar <mahesh1.kumar at intel.com>
    Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180801004614.22149-1-paulo.r.zanoni@intel.com

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