From patchwork Fri Jun 2 11:52:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthias Schiffer X-Patchwork-Id: 13265201 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D0B5C7EE24 for ; Fri, 2 Jun 2023 11:55:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235177AbjFBLzI (ORCPT ); Fri, 2 Jun 2023 07:55:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235391AbjFBLzG (ORCPT ); Fri, 2 Jun 2023 07:55:06 -0400 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D1BF1A8; Fri, 2 Jun 2023 04:54:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1685706878; x=1717242878; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0NfMqRU9yhxmvM+iGSJczBKuYku1/L+ddjdiE0oaavY=; b=kBJCcR+WDLzY/y9dySo8AF5JjisvR2IdjM4Ha2DtzqOkTdXqpYizQN05 DeYuatT1GQF6n0gZMvqLtV11HeFQLz4hygWc0/Zf7hJ4yzuK9OyquLBPu mlkl/AZgZ68l2f2G0dwf0KlGtGxY2nc+0k6dsY/ipMFruUV50Ud5nHhwR 5pSMFRpvVxqbEPfimkaWDst3IOUWFQW66GUc6Q/ybmjHFF/NKCnjSKi6I bCE5DZCckFOosiRWK3/VJ9NnmNi/nIR08EwNIZXQKZ5WxvWn5Xu8Js6NG HmypEHCwoU2THMLtGN86ciJ6DmQ0FgZxpu45LrnTUyLVwcuGHyqnsJO6i w==; X-IronPort-AV: E=Sophos;i="6.00,212,1681164000"; d="scan'208";a="31246994" Received: from unknown (HELO tq-pgp-pr1.tq-net.de) ([192.168.6.15]) by mx1-pgp.tq-group.com with ESMTP; 02 Jun 2023 13:52:41 +0200 Received: from mx1.tq-group.com ([192.168.6.7]) by tq-pgp-pr1.tq-net.de (PGP Universal service); Fri, 02 Jun 2023 13:52:41 +0200 X-PGP-Universal: processed; by tq-pgp-pr1.tq-net.de on Fri, 02 Jun 2023 13:52:41 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1685706761; x=1717242761; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0NfMqRU9yhxmvM+iGSJczBKuYku1/L+ddjdiE0oaavY=; b=RY2yUqKp7kCCBJXzxw8QUxLDnUU1bcO6HELiHEcoOMFLf0/t6jeLJ1Zd o4G+30SJgbUQc4hPI0D2izEMvl92qbeEDhtKgEtMIufZnE5QNXPHxwTXA GSCxx+0YGXOzKNudMXcZq8X0VaEBbJ/1QhF7roMipDSaRtV6cUwSuq5gX GlhU+I4zy6In0fRKS/HhUvH3UL6wO2lnDNGQsF3nXBwn+KkJzb4BQedem qwAceopcXaVAIwd0wUTKm/aKHiFRCOKyk8eUgqQKM7wlvzqOUJDm+s4+p Uq3siTP5slXDcmDo08JqZSau3tkoxhfxUa5SBBYa9qjDi5x+tovX5nKyC A==; X-IronPort-AV: E=Sophos;i="6.00,212,1681164000"; d="scan'208";a="31246993" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 02 Jun 2023 13:52:41 +0200 Received: from localhost.localdomain (unknown [192.168.66.223]) by vtuxmail01.tq-net.de (Postfix) with ESMTPA id 8B52F280088; Fri, 2 Jun 2023 13:52:40 +0200 (CEST) X-CheckPoint: {6479D7FA-2C-AA2CB662-E129E996} X-MAIL-CPID: 2E05E409D839B4ED1AB3D8DA2C10A9CF_3 X-Control-Analysis: str=0001.0A782F1E.6479D809.0001,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 From: Matthias Schiffer To: Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux@ew.tq-group.com, Matthias Schiffer Subject: [PATCH 2/2] spi: add support for generic linux,use-rt-queue flag Date: Fri, 2 Jun 2023 13:52:01 +0200 Message-Id: <20230602115201.415718-2-matthias.schiffer@ew.tq-group.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230602115201.415718-1-matthias.schiffer@ew.tq-group.com> References: <20230602115201.415718-1-matthias.schiffer@ew.tq-group.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Instead of requiring per-driver support to handle the message queue with realtime priority, add handling for a linux,use-rt-queue DT flag to the generic SPI controller initialization. Signed-off-by: Matthias Schiffer --- drivers/spi/spi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 9291b2a0e8871..f069f1aef5378 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3185,6 +3185,11 @@ int spi_register_controller(struct spi_controller *ctlr) ctlr->mode_bits |= SPI_CS_HIGH; } + /* Run message pump with realtime priority */ + if (ctlr->dev.of_node && + of_property_read_bool(ctlr->dev.of_node, "linux,use-rt-queue")) + ctlr->rt = true; + /* * Even if it's just one always-selected device, there must * be at least one chipselect.