linux-kernel - [RFC 0/1] drm/mipi-dbi: Use drm_device for debugfs, drop drm

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Message-Id: <20250421085907.24972-1-jagathjog1996@gmail.com>
Date: Mon, 21 Apr 2025 14:29:06 +0530
From: Jagath Jog J <jagathjog1996@...il.com>
To: mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	simona@...ll.ch,
	mcanal@...lia.com,
	maarten.lankhorst@...ux.intel.com
Cc: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	jagathjog1996@...il.com
Subject: [RFC 0/1] drm/mipi-dbi: Use drm_device for debugfs, drop drm_minor

This patch updates the MIPI DBI driver to use drm_device.debugfs_root
instead of drm_minor for creating debugfs files. The debugfs setup is now
done earlier in probe(), before drm_dev_register(), and the drivers can
avoid using the .debugfs_init callback.

This is an initial version, and only a few drivers are updated for now.

I noticed that some newer drivers or patches still use
drm_debugfs_create_files(), which relies on drm_minor. I was wondering if
there is a specific reason for this, or if there's a plan to switch to
drm_debugfs_add_files? I can send patches to update more drivers if
that helps.

This patch helps move toward the debugfs cleanup task listed here:
https://docs.kernel.org/gpu/todo.html#clean-up-the-debugfs-support

Looking forward to your feedback.

Jagath Jog J (1):
  drm/mipi-dbi: Use drm_device for debugfs, drop drm_minor and
    .debugfs_init

 drivers/gpu/drm/drm_mipi_dbi.c        | 8 ++++----
 drivers/gpu/drm/tiny/ili9163.c        | 3 ++-
 drivers/gpu/drm/tiny/panel-mipi-dbi.c | 3 ++-
 include/drm/drm_mipi_dbi.h            | 4 ++--
 4 files changed, 10 insertions(+), 8 deletions(-)

-- 
2.20.1