From 9ecb549867d7f642f0379f574f0e52870009a8bf Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Wed, 11 May 2016 18:09:21 +0200 Subject: drm/atomic: Add drm_atomic_helper_best_encoder() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: Noralf Trønnes Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1462982962-10530-6-git-send-email-noralf@tronnes.org --- drivers/gpu/drm/drm_atomic_helper.c | 17 +++++++++++++++++ include/drm/drm_atomic_helper.h | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 46a3201b9851..43a0b3dfa846 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -2482,6 +2482,23 @@ backoff: } 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 * diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h index 03642878bc51..ccca709a255b 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -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); -- cgit v1.2.3