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Commit 38cb8d96 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm: Add drm_connector_has_possible_encoder() 



Add a small helper for checking whether a connector and
encoder are associated with each other.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180628131315.14156-8-ville.syrjala@linux.intel.com


Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7b71ca24

drivers/gpu/drm/drm_connector.c

+23 −0
Original line number Original line Diff line number Diff line
@@ -331,6 +331,29 @@ int drm_mode_connector_attach_encoder(struct drm_connector *connector, 
}

}

EXPORT_SYMBOL(drm_mode_connector_attach_encoder);

EXPORT_SYMBOL(drm_mode_connector_attach_encoder);





/**

 * drm_connector_has_possible_encoder - check if the connector and encoder are assosicated with each other

 * @connector: the connector

 * @encoder: the encoder

 *

 * Returns:

 * True if @encoder is one of the possible encoders for @connector.

 */

bool drm_connector_has_possible_encoder(struct drm_connector *connector,

					struct drm_encoder *encoder)

{

	struct drm_encoder *enc;

	int i;



	drm_connector_for_each_possible_encoder(connector, enc, i) {

		if (enc == encoder)

			return true;

	}



	return false;

}

EXPORT_SYMBOL(drm_connector_has_possible_encoder);



static void drm_mode_remove(struct drm_connector *connector,

static void drm_mode_remove(struct drm_connector *connector,

			    struct drm_display_mode *mode)

			    struct drm_display_mode *mode)

{

{

include/drm/drm_connector.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -1187,6 +1187,9 @@ struct drm_connector * 
drm_connector_list_iter_next(struct drm_connector_list_iter *iter);

drm_connector_list_iter_next(struct drm_connector_list_iter *iter);

void drm_connector_list_iter_end(struct drm_connector_list_iter *iter);

void drm_connector_list_iter_end(struct drm_connector_list_iter *iter);





bool drm_connector_has_possible_encoder(struct drm_connector *connector,

					struct drm_encoder *encoder);



/**

/**

 * drm_for_each_connector_iter - connector_list iterator macro

 * drm_for_each_connector_iter - connector_list iterator macro

 * @connector: &struct drm_connector pointer used as cursor

 * @connector: &struct drm_connector pointer used as cursor