[Bug 76176] New: [BYT] Page flip doesn't change tiling mode

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76176

          Priority: medium
            Bug ID: 76176
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT] Page flip doesn't change tiling mode
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: conselvan2 at gmail.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 95812
  --> https://bugs.freedesktop.org/attachment.cgi?id=95812&action=edit
Simple test case that reproduces the bug.

On BayTrail, page flipping to a bo that has a different tiling format than the
current front buffer does not work properly. The new buffer is scanned out
using the tiling format of the fb used in the drmModeSetCrtc() call.

The attached program reproduces the bug. It works properly on SandyBridge. The
expected behavior is for the even scanlines of the display to be colored, and
the odd ones black.

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