linux-kernel - [PATCH v2 0/2] Add generic-display-mux driver and bindings

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Date:   Mon, 16 Jan 2023 19:08:18 +0800
From:   Pin-yen Lin <treapking@...omium.org>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Nicolas Boichat <drinkcat@...omium.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        dri-devel@...ts.freedesktop.org,
        Pin-yen Lin <treapking@...omium.org>
Subject: [PATCH v2 0/2] Add generic-display-mux driver and bindings

This is the v2 the mux driver part of v1. This series is developed for
and tested on MT8173 board, whose layout looks like:

                                  /-- anx7688
-- MT8173 HDMI bridge -- GPIO mux
                                  \-- native HDMI

v1: https://patchwork.kernel.org/project/dri-devel/cover/20191211061911.238393-1-hsinyi@chromium.org/

The other drm bridge callbacks is dropped in this version because:
- The non-atomic callbacks are deprecated
- It would be complicated to pass the atomic state to the downstream
- We actually don't have the hardware to test them

Changes in v2:
- Referenced existing dt-binding schemas from graph.yaml
- Added ddc-i2c-bus into the bindings
- Dropped attach/mode_set/enable/disable callbacks
- Fixed style issues
- Removed the special case for the HDMI connector
- Made the driver only read the GPIO status in IRQ handler
- Rebased to drm-misc-next
- Updated the license: "GPL v2" --> "GPL"

Nicolas Boichat (2):
  dt-bindings: display: bridge: Add GPIO display mux binding
  drm: bridge: Generic GPIO mux driver

 .../bindings/display/bridge/gpio-mux.yaml     |  95 +++++++++
 drivers/gpu/drm/bridge/Kconfig                |  10 +
 drivers/gpu/drm/bridge/Makefile               |   1 +
 drivers/gpu/drm/bridge/generic-gpio-mux.c     | 201 ++++++++++++++++++
 4 files changed, 307 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/gpio-mux.yaml
 create mode 100644 drivers/gpu/drm/bridge/generic-gpio-mux.c

-- 
2.39.0.314.g84b9a713c41-goog