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Commit 9ecb5498 authored by Noralf Trønnes's avatar Noralf Trønnes Committed by Daniel Vetter
Browse files

drm/atomic: Add drm_atomic_helper_best_encoder() 



Add (struct drm_connector_helper_funcs *)->best_encoder callback helper
for connectors that support exactly 1 encoder, statically determined at
driver init time.

Signed-off-by: default avatarNoralf Trønnes <noralf@tronnes.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462982962-10530-6-git-send-email-noralf@tronnes.org
parent 2827635e

drivers/gpu/drm/drm_atomic_helper.c

+17 −0
Original line number Diff line number Diff line
@@ -2482,6 +2482,23 @@ int drm_atomic_helper_connector_dpms(struct drm_connector *connector, 
}

EXPORT_SYMBOL(drm_atomic_helper_connector_dpms);



/**

 * drm_atomic_helper_best_encoder - Helper for &drm_connector_helper_funcs

 *                                  ->best_encoder callback

 * @connector: Connector control structure

 *

 * This is a &drm_connector_helper_funcs ->best_encoder callback helper for

 * connectors that support exactly 1 encoder, statically determined at driver

 * init time.

 */

struct drm_encoder *

drm_atomic_helper_best_encoder(struct drm_connector *connector)

{

	WARN_ON(connector->encoder_ids[1]);

	return drm_encoder_find(connector->dev, connector->encoder_ids[0]);

}

EXPORT_SYMBOL(drm_atomic_helper_best_encoder);



/**

 * DOC: atomic state reset and initialization

 *

include/drm/drm_atomic_helper.h

+2 −0
Original line number Diff line number Diff line
@@ -110,6 +110,8 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc, 
				uint32_t flags);

int drm_atomic_helper_connector_dpms(struct drm_connector *connector,

				     int mode);

struct drm_encoder *

drm_atomic_helper_best_encoder(struct drm_connector *connector);



/* default implementations for state handling */

void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);