linux-kernel - [PATCH v3 0/5] MHDP8546 fixes related to DBANC usecase

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Message-ID: <20250529142517.188786-1-j-choudhary@ti.com>
Date: Thu, 29 May 2025 19:55:12 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <dianders@...omium.org>, <andrzej.hajda@...el.com>,
        <neil.armstrong@...aro.org>, <rfoss@...nel.org>,
        <Laurent.pinchart@...asonboard.com>, <dri-devel@...ts.freedesktop.org>,
        <tomi.valkeinen@...asonboard.com>, <andyshrk@....com>
CC: <jonas@...boo.se>, <jernej.skrabec@...il.com>,
        <maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
        <tzimmermann@...e.de>, <airlied@...il.com>, <simona@...ll.ch>,
        <lumag@...nel.org>, <lyude@...hat.com>, <andy.yan@...k-chips.com>,
        <mordan@...ras.ru>, <linux@...blig.org>, <viro@...iv.linux.org.uk>,
        <a-bhatia1@...com>, <javierm@...hat.com>,
        <linux-kernel@...r.kernel.org>, <devarsht@...com>,
        <j-choudhary@...com>
Subject: [PATCH v3 0/5] MHDP8546 fixes related to DBANC usecase

With the introduction of DBANC framework, the connector is no longer
initialised in bridge_attach if that flag is set by the display
controller.

This series does some cleanup for legacy !(DRM_BRIDGE_ATTACH_NO_CONNECTOR)
usecase and adds fixes for DRM_BRIDGE_ATTACH_NO_CONNECTOR usecase.

v2 patch lnk:
<https://lore.kernel.org/all/20250521073237.366463-1-j-choudhary@ti.com/>

Changelog v2->v3:
- Add mode_valid in drm_bridge_funcs to a separate patch
- Remove "if (mhdp->connector.dev)" conditions that were missed in v2
- Split out the move of drm_atomic_get_new_connector_for_encoder()
  to a separate patch
- Drop "R-by" considering the changes in v2[1/3]
- Add Fixes tag to first 4 patches:
  commit c932ced6b585 ("drm/tidss: Update encoder/bridge chain connect model")
  This added DBANC flag in tidss while attaching bridge to the encoder
- Drop RFC prefix

Jayesh Choudhary (5):
  drm/bridge: cadence: cdns-mhdp8546-core: Remove legacy support for
    connector initialisation in bridge
  drm/bridge: cadence: cdns-mhdp8546*: Change drm_connector from
    structure to pointer
  drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector
    earlier in atomic_enable()
  drm/bridge: cadence: cdns-mhdp8546-core: Add mode_valid hook to
    drm_bridge_funcs
  drm/bridge: cadence: cdns-mhdp8546-core: Reduce log level for DPCD
    read/write

 .../drm/bridge/cadence/cdns-mhdp8546-core.c   | 232 ++++--------------
 .../drm/bridge/cadence/cdns-mhdp8546-core.h   |   2 +-
 .../drm/bridge/cadence/cdns-mhdp8546-hdcp.c   |   8 +-
 3 files changed, 48 insertions(+), 194 deletions(-)

-- 
2.34.1