linux-kernel - [PATCH 0/4] drm/fsl-dcu: add overlay and cursor plane support

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Message-Id: <20160906040233.32471-1-stefan@agner.ch>
Date:   Mon,  5 Sep 2016 21:02:29 -0700
From:   Stefan Agner <stefan@...er.ch>
To:     dri-devel@...ts.freedesktop.org, meng.yi@....com
Cc:     alison.wang@...escale.com, jianwei.wang.chn@...il.com,
        linux-kernel@...r.kernel.org, Stefan Agner <stefan@...er.ch>
Subject: [PATCH 0/4] drm/fsl-dcu: add overlay and cursor plane support

This patchset adds overlay and cursor plane support. It also
fixes some issues uncovered during implementation of this.

However, the plane updates currently causes the display to flicker for
unknown reasons. As far as I can tell, the CRTC atomic_flush should
trigger the update correctly via READREG, which according to
documentation:
The READREG bit causes a single transfer to begin at the next frame
blanking period. This bit is cleared when the transfer is complete.

I made a video how that looks:
https://cloud.agner.ch/index.php/s/Yfqa2u7UBEWUT8N

Any ideas?

Stefan Agner (4):
  drm/fsl-dcu: support overlay and cursor planes
  drm/fsl-dcu: respect pos/size register sizes
  drm/fsl-dcu: update all registers on flush
  drm/fsl-dcu: do not update when modifying irq registers

 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c  | 50 ++++++++++++++++++++++++-----
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c   |  4 ---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h   |  8 ++---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c | 42 +++++++++++-------------
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.h |  3 +-
 5 files changed, 67 insertions(+), 40 deletions(-)

-- 
2.9.3