From patchwork Mon Sep 30 23:10:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 13817278 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 0FF21CEB2CD for ; Mon, 30 Sep 2024 23:40:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7D30710E5A2; Mon, 30 Sep 2024 23:40:46 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="hsWXC2TC"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id F218710E5A2 for ; Mon, 30 Sep 2024 23:40:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727739644; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OPpcmKbNeNbUSddRK0GJ79bGRqnGtk4IaTVQGxA5MmY=; b=hsWXC2TCaqMA9IhHR6pY97ISeMuNqJZhcImQwKqdiaysJ0wGdDEdSNpuKdAzE+pHbPOoQp 2MZSVW3wdMdvzecRZ6J2l13ihYaDGq2ZF6xcEYl/moHm3OSdfg5ojQWUDEP9QWwKBlOL8k kOZqCAw28W3TUoNnkaTjkGX7GJ9yjvc= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-477-f4W_Q1TUOOinP8t2E5kuOw-1; Mon, 30 Sep 2024 19:40:40 -0400 X-MC-Unique: f4W_Q1TUOOinP8t2E5kuOw-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (unknown [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id DC66F191961D; Mon, 30 Sep 2024 23:40:37 +0000 (UTC) Received: from chopper.redhat.com (unknown [10.22.32.36]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A11393004AB3; Mon, 30 Sep 2024 23:40:29 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org Cc: Asahi Lina , Danilo Krummrich , mcanal@igalia.com, airlied@redhat.com, zhiw@nvidia.com, cjia@nvidia.com, jhubbard@nvidia.com, Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , linux-kernel@vger.kernel.org (open list) Subject: [WIP RFC v2 25/35] rust: drm/kms: Add RawPlaneState::crtc() Date: Mon, 30 Sep 2024 19:10:08 -0400 Message-ID: <20240930233257.1189730-26-lyude@redhat.com> In-Reply-To: <20240930233257.1189730-1-lyude@redhat.com> References: <20240930233257.1189730-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a binding for checking drm_plane_state.crtc. Note that we don't have a way of knowing what DriverCrtc implementation would be used here (and want to make this function also available on OpaquePlaneState types), so we return an OpaqueCrtc. Signed-off-by: Lyude Paul --- rust/kernel/drm/kms/plane.rs | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/rust/kernel/drm/kms/plane.rs b/rust/kernel/drm/kms/plane.rs index 04f1bdfbb1ea2..4d16d53179fca 100644 --- a/rust/kernel/drm/kms/plane.rs +++ b/rust/kernel/drm/kms/plane.rs @@ -30,6 +30,7 @@ ModeObject, StaticModeObject, atomic::*, + crtc::*, }; /// The main trait for implementing the [`struct drm_plane`] API for [`Plane`] @@ -489,6 +490,12 @@ fn plane(&self) -> &Self::Plane { // invariant throughout the lifetime of the Plane unsafe { Self::Plane::from_raw(self.as_raw().plane) } } + + /// Return the current [`OpaqueCrtc`] assigned to this plane, if there is one. + fn crtc<'a, 'b: 'a>(&'a self) -> Option<&'b OpaqueCrtc<::Driver>> { + // SAFETY: This cast is guaranteed safe by `OpaqueCrtc`s invariants. + NonNull::new(self.as_raw().crtc).map(|c| unsafe { OpaqueCrtc::from_raw(c.as_ptr()) }) + } } impl RawPlaneState for T {}