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Commit f1c79df3 authored by Zhenyu Wang's avatar Zhenyu Wang Committed by Eric Anholt
Browse files

drm/i915: Add new helper to return current attached encoder for connector 



For introducing splitted encoder/connector structure, this helper will return
connector's attached encoder when needed.

Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent 5daa55eb

drivers/gpu/drm/i915/intel_display.c

+25 −0
Original line number Diff line number Diff line
@@ -4982,6 +4982,31 @@ struct drm_encoder *intel_best_encoder(struct drm_connector *connector) 
	return &intel_encoder->enc;

}



/*

 * Return which encoder is currently attached for connector.

 */

struct drm_encoder *intel_attached_encoder (struct drm_connector *connector)

{

	struct drm_mode_object *obj;

	struct drm_encoder *encoder;

	int i;



	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {

		if (connector->encoder_ids[i] == 0)

			break;



		obj = drm_mode_object_find(connector->dev,

                                           connector->encoder_ids[i],

                                           DRM_MODE_OBJECT_ENCODER);

		if (!obj)

			continue;



		encoder = obj_to_encoder(obj);

		return encoder;

	}

	return NULL;

}



/*

 * set vga decode state - true == enable VGA decode

 */

drivers/gpu/drm/i915/intel_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -190,6 +190,7 @@ extern void intel_encoder_prepare (struct drm_encoder *encoder); 
extern void intel_encoder_commit (struct drm_encoder *encoder);



extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);

extern struct drm_encoder *intel_attached_encoder(struct drm_connector *connector);



extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,

						    struct drm_crtc *crtc);