Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5b7c5311 authored by Ray Zhang's avatar Ray Zhang
Browse files

drm/bridge: add connector_init interface in drm_bridge_funcs 



Add the connector_init callback so a bridge is allowed to
initialize the connector passed to itself. This is useful
in certain cases like, the connector and bridge are created
in two different modules, while the connector funcs need
access extra information of the bridge. This callback offers
the opportunity to override the connector's behavior.

CRs-Fixed: 2140653
Change-Id: Iee228dd610d2e72d0a9e0bd960b0715b4ea6c644
Signed-off-by: default avatarRay Zhang <rayz@codeaurora.org>
parent be566880

drivers/gpu/drm/drm_bridge.c

+26 −0
Original line number Diff line number Diff line
@@ -148,6 +148,32 @@ void drm_bridge_detach(struct drm_bridge *bridge) 
}

EXPORT_SYMBOL(drm_bridge_detach);



/**

 * drm_bridge_connector_init - call bridge's connector_init callback to allow

 *                     the bridge to update connector's behavior.

 * @bridge: bridge control structure

 * @connector: connector control structure

 *

 * Calls ->connector_init() &drm_bridge_funcs op for the bridge.

 *

 * RETURNS:

 * Zero on success, error code on failure

 */

int drm_bridge_connector_init(struct drm_bridge *bridge,

	struct drm_connector *connector)

{

	int ret = 0;



	if (!bridge || !connector)

		return -EINVAL;



	if (bridge->funcs->connector_init)

		ret = bridge->funcs->connector_init(bridge, connector);



	return ret;

}

EXPORT_SYMBOL(drm_bridge_connector_init);



/**

 * DOC: bridge callbacks

 *

include/drm/drm_bridge.h

+19 −0
Original line number Diff line number Diff line
@@ -58,6 +58,23 @@ struct drm_bridge_funcs { 
	 */

	void (*detach)(struct drm_bridge *bridge);



	/**

	 * @connector_init:

	 *

	 * This callback is used to init the connector from bridge side. In some

	 * cases connector and bridge are created in different modules, and the

	 * connector ops might need extra info from bridge. This callback offers

	 * the opportunity to overwrite connector's behavior in external bridge.

	 *

	 * The connector_init callback is optional.

	 *

	 * RETURNS:

	 *

	 * Zero on success, error code on failure.

	 */

	int (*connector_init)(struct drm_bridge *bridge,

				struct drm_connector *connector);



	/**

	 * @mode_fixup:

	 *
@@ -214,5 +231,7 @@ void drm_bridge_mode_set(struct drm_bridge *bridge, 
			struct drm_display_mode *adjusted_mode);

void drm_bridge_pre_enable(struct drm_bridge *bridge);

void drm_bridge_enable(struct drm_bridge *bridge);

int drm_bridge_connector_init(struct drm_bridge *bridge,

	struct drm_connector *connector);



#endif