linux-kernel - [PATCH v7 0/2] drm: show "all" bridges in debugfs

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Message-Id: <20250225-drm-debugfs-show-all-bridges-v7-0-8826037ada37@bootlin.com>
Date: Tue, 25 Feb 2025 17:16:19 +0100
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.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>
Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH v7 0/2] drm: show "all" bridges in debugfs

This series collects some minor improvements and fixes previously part of
[0], hence the "v7" version number.

It adds a /sys/kernel/debug/dri/bridges file showing all bridges between
drm_bridge_add() and drm_bridge_remove(), which might not be bound to any
encoder and thus not visible anywhere in debugfs.

[0] https://lore.kernel.org/dri-devel/20250206-hotplug-drm-bridge-v6-0-9d6f2c9c3058@bootlin.com/

Luca

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
Luca Ceresoli (2):
      drm/bridge: move bridges_show logic from drm_debugfs.c
      drm/debugfs: add top-level 'bridges' file showing all added bridges

 drivers/gpu/drm/drm_bridge.c   | 53 ++++++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_debugfs.c  | 42 ++++++++++++++-------------------
 drivers/gpu/drm/drm_drv.c      |  1 +
 drivers/gpu/drm/drm_internal.h |  5 ++++
 include/drm/drm_bridge.h       | 10 ++++++++
 5 files changed, 86 insertions(+), 25 deletions(-)
---
base-commit: 09c117e66c48bfdccc41b380d6300f0a1011ec7e
change-id: 20250225-drm-debugfs-show-all-bridges-642e870b71e7

Best regards,
-- 
Luca Ceresoli <luca.ceresoli@...tlin.com>