drm/bridge: cadence: cdns-mhdp8546-core: Add mode_valid hook to drm_bridge_funcs

Browse source

Add cdns_mhdp_bridge_mode_valid() to check if specific mode is valid for
this bridge or not. In the legacy usecase with
!DRM_BRIDGE_ATTACH_NO_CONNECTOR we were using the hook from
drm_connector_helper_funcs but with DRM_BRIDGE_ATTACH_NO_CONNECTOR
we need to have mode_valid() in drm_bridge_funcs.

Without this patch, when using DRM_BRIDGE_ATTACH_NO_CONNECTOR
flag, the cdns_mhdp_bandwidth_ok() function would not be called
during  mode validation, potentially allowing modes that exceed
the bridge's bandwidth capabilities to be incorrectly marked as
valid.

Fixes: c932ced6b5 ("drm/tidss: Update encoder/bridge chain connect model")
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Harikrishna Shenoy <h-shenoy@ti.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20251209120332.3559893-3-h-shenoy@ti.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

...

This commit is contained in:

Jayesh Choudhary 2025-12-09 17:33:28 +05:30 • committed by Luca Ceresoli

parent 43d6508ddb

commit 6dbff34016

1 changed files with 20 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

20

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c

View file