linux-kernel - [PATCH v3 0/7] drm: sun4i: dsi: Convert drm bridge

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Message-Id: <20210214194102.126146-1-jagan@amarulasolutions.com>
Date:   Mon, 15 Feb 2021 01:10:55 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amarula@...rulasolutions.com,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH v3 0/7] drm: sun4i: dsi: Convert drm bridge

This series convert Allwinner DSI controller to full functional 
drm bridge driver for supporting slave panel, bridges.

Here, are the previous version changes[1].

The key concern about these changes is about kms hotplug which 
indeed not compatible with bridge conversion.  However, I did 
try several ways to support hotplug with the bridge but it's 
resulting in a deadlock where bind never attach bridge until 
bridge pointer found and bridge pointer cannot found until bind 
finishes. Any inputs on this would be appreciated.

[1] https://lwn.net/Articles/783127/

Any inputs?
Jagan.

Jagan Teki (7):
  drm: sun4i: dsi: Use drm_of_find_panel_or_bridge
  drm: sun4i: dsi: Add bridge support
  drm: sun4i: dsi: Convert to bridge driver
  drm: sun4i: dsi: Separate code for bridge pre_enable
  drm: bridge: Queue the bridge chain instead of stacking
  drm: sun4i: dsi: Use drm_panel_bridge, connector API
  [DO NOT MERGE] ARM: dts: sun8i: bananapi-m2m: Enable S070WV20-CT16 panel

 arch/arm/boot/dts/sun8i-r16-bananapi-m2m.dts |  85 ++++++++++++
 drivers/gpu/drm/drm_bridge.c                 |   4 +-
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c       | 128 +++++++++----------
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h       |  11 +-
 4 files changed, 150 insertions(+), 78 deletions(-)

-- 
2.25.1