From patchwork Thu May 20 20:02:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 443755 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AE8AC433B4 for ; Thu, 20 May 2021 20:02:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0F6C76121E for ; Thu, 20 May 2021 20:02:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237013AbhETUED (ORCPT ); Thu, 20 May 2021 16:04:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236622AbhETUEC (ORCPT ); Thu, 20 May 2021 16:04:02 -0400 Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2779BC061574; Thu, 20 May 2021 13:02:40 -0700 (PDT) Received: by mail-ej1-x62e.google.com with SMTP id lg14so27155806ejb.9; Thu, 20 May 2021 13:02:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=piApn4hueZMiHkK7L5NTTYDLJqVrmyE+9skDaAkLOww=; b=Lor68eBWMLZ4VX2/MTf/Nu0a1XrjNwI0lhXArFDkmNwK6GUAvO/d9w2IZJrLiqb9Ue BJriTeuwZYXG0E7az1j501OngiWtVMnxBoKCeSqXS4JbzNTVtiGaeQsmGMduApYk2w4R b4mJiHM5XO+65LWKq5JsidqSmLUYX7hAHl2BQqWwR1AkdujHAgsWxDjQgDilr/pRFJel 1hrkUZ8P4aA4l0ye1r8JcYsSPqu1KMgI61ScaVVg4Gf1KUK9B5J8FW7ZKD+w2e2f6Ayc X2nsz8BVHEwkdKJta0OWYXaY73IfOZCJC2Kh5uNncJkCWPCylqPu8xKIvBGeAOquhNP1 c+lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=piApn4hueZMiHkK7L5NTTYDLJqVrmyE+9skDaAkLOww=; b=gJV+3MSAZ/w9HG+rMNp6JrzFRsyCO/wEiaTsDb3Ws8lXI4ahSyTbLJuOcP66Qrg/MG /bzwgXH5B5XSfe19MqjJhCI2HCSlVnlxF2AePodd+fRk0Q0rTKnxHF3SPK22FPgJ60pw PFTGDHQJvJ30nDpPXM+H1yGUIrDCMxoLF4HQ3O7JBXv3vGHD62iKtW8sGxKNZ43sDj+s As3v+pL7i/5tWd49A8X9CnlrFQhHR6CIJPtE4J2dZn5MVmhNTaNaWizVPJ5hEzvfl3jD qB/W1vJ7OOU3YJQp36TwJtkXprBAHrLNcOgykJyojYv7cc39xqaH2ufhSW/yb32v5EQi T1IQ== X-Gm-Message-State: AOAM532vHLuPFYEGxAfrrl6rg7+gGMwG8+NeiUjErW4cYraO5tFJXb/B wuOHVM1Jo3CF4Mt5BstIFoM= X-Google-Smtp-Source: ABdhPJzeEUxkPlXRveR9Z/OwCFGBnLKqkwTfmkYvxOIVXIwG5n6aFWCQJHKZe8TStnfDA8c0pIJ4/Q== X-Received: by 2002:a17:906:5d0a:: with SMTP id g10mr6239711ejt.349.1621540958717; Thu, 20 May 2021 13:02:38 -0700 (PDT) Received: from localhost.localdomain ([188.26.52.84]) by smtp.gmail.com with ESMTPSA id y10sm1974288ejh.105.2021.05.20.13.02.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 May 2021 13:02:38 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , netdev@vger.kernel.org Cc: Florian Fainelli , Andrew Lunn , Vivien Didelot , Mark Brown , linux-spi@vger.kernel.org, Guenter Roeck , Vladimir Oltean Subject: [PATCH v2 net-next 0/2] Adapt the sja1105 DSA driver to the SPI controller's transfer limits Date: Thu, 20 May 2021 23:02:21 +0300 Message-Id: <20210520200223.3375421-1-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Vladimir Oltean This series changes the SPI transfer procedure in sja1105 to take into consideration the buffer size limitations that the SPI controller driver might have. Changes in v2: Remove the driver's use of cs_change and send multiple, smaller SPI messages instead of a single large one. Vladimir Oltean (2): net: dsa: sja1105: send multiple spi_messages instead of using cs_change net: dsa: sja1105: adapt to a SPI controller with a limited max transfer size drivers/net/dsa/sja1105/sja1105_spi.c | 80 ++++++++++++--------------- 1 file changed, 34 insertions(+), 46 deletions(-)