Commit 71867e8d authored by Ayushi Makhija's avatar Ayushi Makhija Committed by Dmitry Baryshkov
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drm/bridge: anx7625: fix drm_bridge ops flags to support hot-plugging 



The anx7625_link_bridge() checks if a device is not a panel
bridge and add DRM_BRIDGE_OP_HPD and DRM_BRIDGE_OP_DETECT
flags to the drm_bridge->ops. However, on port 1 of the anx7625
bridge, any device added is always treated as a panel bridge,
preventing connector_detect() from being called. To resolve
this, instead of just checking if it is a panel bridge, verify
the type of device based on aux whether it is a DisplayPort or
eDP panel. If the device is not of the eDP type, add
DRM_BRIDGE_OP_HPD and DRM_BRIDGE_OP_DETECT flags to the to
the drm_bridge->ops.

Signed-off-by: default avatarAyushi Makhija <quic_amakhija@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250505094245.2660750-5-quic_amakhija@quicinc.com


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
parent ca8a78cd

drivers/gpu/drm/bridge/analogix/anx7625.c

+2 −3
Original line number Diff line number Diff line
@@ -2603,9 +2603,8 @@ static int anx7625_link_bridge(struct drm_dp_aux *aux) 
	platform->bridge.of_node = dev->of_node;

	if (!anx7625_of_panel_on_aux_bus(dev))

		platform->bridge.ops |= DRM_BRIDGE_OP_EDID;

	if (!platform->pdata.panel_bridge)

		platform->bridge.ops |= DRM_BRIDGE_OP_HPD |

					DRM_BRIDGE_OP_DETECT;

	if (!platform->pdata.panel_bridge || !anx7625_of_panel_on_aux_bus(dev))

		platform->bridge.ops |= DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_DETECT;

	platform->bridge.type = platform->pdata.panel_bridge ?

				    DRM_MODE_CONNECTOR_eDP :

				    DRM_MODE_CONNECTOR_DisplayPort;