On Tue, Sep 30, 2025 at 05:09:06PM +0800, Damon Ding wrote:

As suggested by Dmitry, the DRM legacy bridge driver can be pulled
out of imx/ subdir for multi-platform use. The driver is also renamed
to make it more generic and suitable for platforms other than i.MX.

Additionally, a new API drm_bridge_is_legacy() is added to identify
the legacy bridge, allowing specialized handling for such cases.

Why do you need special handling for it?

Signed-off-by: Damon Ding <redacted>
Suggested-by: Dmitry Baryshkov <redacted>
---
 drivers/gpu/drm/bridge/Kconfig                | 10 ++
 drivers/gpu/drm/bridge/Makefile               |  1 +
 drivers/gpu/drm/bridge/imx/Kconfig            | 10 --
 drivers/gpu/drm/bridge/imx/Makefile           |  1 -
 .../gpu/drm/bridge/imx/imx-legacy-bridge.c    | 91 -----------------
 drivers/gpu/drm/bridge/legacy-bridge.c        | 99 +++++++++++++++++++
 drivers/gpu/drm/imx/ipuv3/Kconfig             |  4 +-
 drivers/gpu/drm/imx/ipuv3/imx-ldb.c           |  6 +-
 drivers/gpu/drm/imx/ipuv3/parallel-display.c  |  4 +-
 include/drm/bridge/imx.h                      | 17 ----
 include/drm/bridge/legacy-bridge.h            | 18 ++++
 11 files changed, 135 insertions(+), 126 deletions(-)
 delete mode 100644 drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c
 create mode 100644 drivers/gpu/drm/bridge/legacy-bridge.c
 delete mode 100644 include/drm/bridge/imx.h
 create mode 100644 include/drm/bridge/legacy-bridge.h

I'm slightly concerned with the name of 'legacy drm bridge', It was fine
for 'i.MX legacy', but now it might be a bit of overkill. Maybe
something like drm_display_mode or drm_of_display_mode bridge?

-- 
With best wishes
Dmitry