linux-kernel - [PATCH v2 0/4] drm/bridge: tfp410: Add i2c support

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Message-Id: <20230125-tfp410_i2c-v2-0-bf22f4dcbcea@criticallink.com>
Date:   Thu, 26 Jan 2023 17:40:41 -0500
From:   Jonathan Cormier <jcormier@...ticallink.com>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...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:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Michael Williamson <michael.williamson@...ticallink.com>,
        Bob Duke <bduke@...ticallink.com>,
        Jonathan Cormier <jcormier@...ticallink.com>
Subject: [PATCH v2 0/4] drm/bridge: tfp410: Add i2c support

The TFP410 driver does not support I2C.  As such, the device remains in
Power Down if the I2C is enabled by the bootstrap pins.

Add basic support for the I2C interface, and provide support to take
the device out of power down when enabled.  Also read the bootstrap mode
pins via the CTL_1_MODE register when using the I2C bus.

Also allow polling device to support hdmi/dvi hotplug detection.

Signed-off-by: Jonathan Cormier <jcormier@...ticallink.com>
---
Changes in v2:
- Fix dt_binding_check errors
- Remove hdmi connector from binding example
- Fix compile warning. Unused variable and unsigned int instead of int for ret
- Fix commit titles
- Drop of_match_ptr change
- Link to v1: https://lore.kernel.org/r/20230125-tfp410_i2c-v1-0-66a4d4e390b7@criticallink.com

---
Jonathan Cormier (1):
      dt-bindings: display: bridge: tfp410: Add tfp410 i2c example

Michael Williamson (3):
      drm/bridge: tfp410: Support basic I2C interface
      drm/bridge: tfp410: Fix logic to configured polled HPD
      drm/bridge: tfp410: If connected, use I2C for polled HPD status.

 .../bindings/display/bridge/ti,tfp410.yaml         |  30 ++++++
 drivers/gpu/drm/bridge/ti-tfp410.c                 | 107 +++++++++++++++------
 2 files changed, 110 insertions(+), 27 deletions(-)
---
base-commit: 93f875a8526a291005e7f38478079526c843cbec
change-id: 20230125-tfp410_i2c-3b270b0bf3e0

Best regards,
-- 
Jonathan Cormier <jcormier@...ticallink.com>