linux-kernel - [PATCH v2 0/3] Add LG SW49410 Panel Driver

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Message-Id: <20250915-judyln-panel-v2-0-01ab2199fea5@postmarketos.org>
Date: Mon, 15 Sep 2025 19:32:11 -0700
From: Paul Sajna <sajattack@...tmarketos.org>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, Sam Ravnborg <sam@...nborg.org>
Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 devicetree@...r.kernel.org, David Heidelberg <david@...t.cz>, 
 phone-devel@...r.kernel.org, Amir Dahan <system64fumo@...tonmail.com>, 
 Paul Sajna <sajattack@...tmarketos.org>
Subject: [PATCH v2 0/3] Add LG SW49410 Panel Driver

This patch series adds a drm panel driver for the LG SW49410 panel found
in the LG G7 ThinQ (codename judyln).

The basic driver skeleton was generated by https://github.com/msm8916-mainline/linux-mdss-dsi-panel-driver-generator
from the vendor device-tree.

The panel driver works but during testing we noticed sometimes the
display goes blank. Source of this problem is unknown but seems to be external.
i.e. It could be a conflict with another driver or an issue with
aftermarket panels.

Comments were added explaining magic numbers, and devicetree
documentation was also added

Once this patch has been accepted, I'll follow up with
a devicetree update for sdm845-lg-judyln
that includes this driver, along with several other improvements

Co-authored-by: Amir Dahan <system64fumo@...tonmail.com>
Signed-off-by: Amir Dahan <system64fumo@...tonmail.com>
Signed-off-by: Paul Sajna <sajattack@...tmarketos.org>
---
Changes in v2:
- use "multi" versions of functions
- remove DRM_DISPLAY_DP_HELPER
- change dt-bindings to panel-simple
- Link to v1: https://lore.kernel.org/r/20250910-judyln-panel-v1-0-825c74403bbb@postmarketos.org

---
Amir Dahan (1):
      drm: panel: Add LG SW49410 Panel

Paul Sajna (2):
      Update MAINTAINERS for lg,sw49410
      dt-bindings: display: panel: panel-simple: Add lg,sw49410 compatible

 .../bindings/display/panel/panel-simple.yaml       |   2 +
 MAINTAINERS                                        |   5 +
 drivers/gpu/drm/panel/Kconfig                      |  13 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-lg-sw49410.c           | 502 +++++++++++++++++++++
 5 files changed, 523 insertions(+)
---
base-commit: e04c78d86a9699d136910cfc0bdcf01087e3267e
change-id: 20250910-judyln-panel-948f177c5c5c

Best regards,
-- 
Paul Sajna <sajattack@...tmarketos.org>