From patchwork Wed Jan 25 11:48:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Imre Deak X-Patchwork-Id: 13115603 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0D6C1C27C76 for ; Wed, 25 Jan 2023 11:49:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 25AF110E7B2; Wed, 25 Jan 2023 11:49:14 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8799110E7A7; Wed, 25 Jan 2023 11:49:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674647342; x=1706183342; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FcDIXn+b1xfGwF5/0dgANgrSJc2u2QBQi/C9Qo6OVUg=; b=Diy3GM45CKEIeWQaSaAM48eFFrxADaDlEortZYt3ehzzTe+my0wRwwjW pGIn3xbhQ2jy9xKce2wpcDFNLjuucN+rhsAsABOVnCWflqQEfzrHnrX8j 8mr30T8MHkbb3X7crGTS35IHJ1uSfi+3WvMpKZSPQxxWzEYB0WFRtRWqv ykY9tdQDk05fcNZZzirhBCzv9UaIQBE1k1m8ZJMu9ZoImUbxOjQvvDUn/ d3kWxKn4760FvMxgujb6RDhA+CTyXImpIKBWP0c82Z8n9XlIJ3A3Bh9T1 +08Z1MQabmyTJZE6/aJO2WQKEDkbJ/9+/M7Q94enp3FvlouhlnZDs3bZd w==; X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="412769909" X-IronPort-AV: E=Sophos;i="5.97,245,1669104000"; d="scan'208";a="412769909" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2023 03:49:02 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="786399699" X-IronPort-AV: E=Sophos;i="5.97,245,1669104000"; d="scan'208";a="786399699" Received: from ideak-desk.fi.intel.com ([10.237.72.58]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2023 03:49:00 -0800 From: Imre Deak To: intel-gfx@lists.freedesktop.org Subject: [PATCH 3/9] drm/display/dp_mst: Add drm_atomic_get_old_mst_topology_state() Date: Wed, 25 Jan 2023 13:48:46 +0200 Message-Id: <20230125114852.748337-4-imre.deak@intel.com> X-Mailer: git-send-email 2.31.1.189.g2e36527f23 In-Reply-To: <20230125114852.748337-1-imre.deak@intel.com> References: <20230125114852.748337-1-imre.deak@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, stable@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a function to get the old MST topology state, required by a follow-up i915 patch. While at it clarify the code comment of drm_atomic_get_new_mst_topology_state(). Cc: Lyude Paul Cc: stable@vger.kernel.org # 6.1 Cc: dri-devel@lists.freedesktop.org Signed-off-by: Imre Deak Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 29 +++++++++++++++++-- include/drm/display/drm_dp_mst_helper.h | 3 ++ 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index ebf6e31e156e0..81cc0c3b1e000 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -5362,18 +5362,43 @@ struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_a } EXPORT_SYMBOL(drm_atomic_get_mst_topology_state); +/** + * drm_atomic_get_old_mst_topology_state: get old MST topology state in atomic state, if any + * @state: global atomic state + * @mgr: MST topology manager, also the private object in this case + * + * This function wraps drm_atomic_get_old_private_obj_state() passing in the MST atomic + * state vtable so that the private object state returned is that of a MST + * topology object. + * + * Returns: + * + * The old MST topology state, or NULL if there's no topology state for this MST mgr + * in the global atomic state + */ +struct drm_dp_mst_topology_state * +drm_atomic_get_old_mst_topology_state(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr) +{ + struct drm_private_state *priv_state = + drm_atomic_get_old_private_obj_state(state, &mgr->base); + + return priv_state ? to_dp_mst_topology_state(priv_state) : NULL; +} +EXPORT_SYMBOL(drm_atomic_get_old_mst_topology_state); + /** * drm_atomic_get_new_mst_topology_state: get new MST topology state in atomic state, if any * @state: global atomic state * @mgr: MST topology manager, also the private object in this case * - * This function wraps drm_atomic_get_priv_obj_state() passing in the MST atomic + * This function wraps drm_atomic_get_new_private_obj_state() passing in the MST atomic * state vtable so that the private object state returned is that of a MST * topology object. * * Returns: * - * The MST topology state, or NULL if there's no topology state for this MST mgr + * The new MST topology state, or NULL if there's no topology state for this MST mgr * in the global atomic state */ struct drm_dp_mst_topology_state * diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index f5eb9aa152b14..32c764fb9cb56 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -868,6 +868,9 @@ struct drm_dp_mst_topology_state * drm_atomic_get_mst_topology_state(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); struct drm_dp_mst_topology_state * +drm_atomic_get_old_mst_topology_state(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr); +struct drm_dp_mst_topology_state * drm_atomic_get_new_mst_topology_state(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); struct drm_dp_mst_atomic_payload *