linux-kernel - [PATCH v4 0/5] drm/mxsfb: Fix runtime PM for unpowering lcdif block

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Date:   Wed,  8 Aug 2018 19:08:57 +0300
From:   Leonard Crestez <leonard.crestez@....com>
To:     Stefan Agner <stefan@...er.ch>, Marek Vasut <marex@...x.de>,
        Shawn Guo <shawnguo@...nel.org>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        Robert Chiras <robert.chiras@....com>,
        Fabio Estevam <fabio.estevam@....com>,
        Anson Huang <Anson.Huang@....com>,
        dri-devel@...ts.freedesktop.org,
        Dong Aisheng <aisheng.dong@....com>, linux-imx@....com,
        kernel@...gutronix.de, linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/5] drm/mxsfb: Fix runtime PM for unpowering lcdif block

Adding lcdif nodes to a power domain currently does work, it results in
black/corrupted screens or hangs. While the driver does enable runtime
pm it does not deal correctly with the block being unpowered.

Changes since v3:
 * Don't set initial fb in mode_set_nofb, do it in crtc_enable
 * Simplify AXI clk handling to allow setting fb in crtc_enable
 * No functional changes

Last 3 patches are identical to v3 with review tags attached.

Link to v3: https://lkml.org/lkml/2018/8/6/728

Leonard Crestez (5):
  drm/mxsfb: Move axi clk enable/disable to crtc enable/disable
  drm/mxsfb: Fix initial corrupt frame when activating display
  drm/mxsfb: Add pm_runtime calls to pipe_enable/disable
  drm/mxsfb: Add PM_SLEEP support
  drm/mxsfb: Switch to drm_atomic_helper_commit_tail_rpm

 drivers/gpu/drm/mxsfb/mxsfb_crtc.c | 53 +++++++++++++++++++-----------
 drivers/gpu/drm/mxsfb/mxsfb_drv.c  | 40 ++++++++++++++++++++++
 2 files changed, 74 insertions(+), 19 deletions(-)

-- 
2.17.1