From patchwork Thu Mar 30 06:34:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joy Chakraborty X-Patchwork-Id: 669380 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 65FF1C74A5B for ; Thu, 30 Mar 2023 06:35:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229620AbjC3Ge7 (ORCPT ); Thu, 30 Mar 2023 02:34:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229505AbjC3Ge6 (ORCPT ); Thu, 30 Mar 2023 02:34:58 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFDF65240 for ; Wed, 29 Mar 2023 23:34:57 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 4-20020a251904000000b00b7f75c3cafdso2579977ybz.16 for ; Wed, 29 Mar 2023 23:34:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1680158097; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=Vck4iSDUKZf+JCdPQEvQ4evRUmQTT/pnCnaPcb2eePY=; b=K2ZxZT3WU7jTwiesqYy89B7hO2hIOzo/cyknJYK7ErdVGCnBDUUfG4QRbuA6Ew/UBq 66p3lUcFg9MUziJJhOzBEdwtoHWizDcBeH/DTYEaxot1TqPBH5+aL0CdsjBnbmvOUzPs 7Y8zHNNN2f4dVVw0lxHFF+QK50cvtKezv9EorSute8ILZpzulv6WjGh1c5lJ4XChhQIP XpKniGWjZ9qlHSZBhlbnVPLbb7v6UfT683D2MMxQ2SIwaSNM2mdwMsfZqi01vQJ+DeI5 tlDdF0MA1Eu4Gjy5GikaRF1fBRHIZo5RvwSskPxUyy9peykfjmREizZyY1Yf8Jm50wAl ORVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680158097; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Vck4iSDUKZf+JCdPQEvQ4evRUmQTT/pnCnaPcb2eePY=; b=unuo13VnIt7ENblPeC6+3yQLCS0fC9KbZar84E6FcuCTIxtAP2uY3bIeFnmXfF3Bk5 2nDXQgNQav1IY7FOE2+MxN8CXrCEzikzXtReOo4/vUmOCF3oSViTQr1tAr3DV9nlqZ0R nzS7I7Vm65RcH5R0frMtOV9PWELwjrHa83Eza++4ao3MJ4oebVaEQMx5gsEI5CWrbsvF NDB4OyZUeF928++1kHPo5IbidIFcKmIlAHRlbgjTlrz/dwks45tbJ2bfgTmRToJJVdO/ ZwyxTnSFAnpMb596is57NGJqWuuvCdctLH78NdVuzgJEEJO9XQhPpZdvOCAEyQKfoB11 mZ+w== X-Gm-Message-State: AAQBX9cZlNxFBfoAAdgg/PCd12UOqQ0m3GqKJhfaTKmdxy8TbS85nhTD Oa1Za9GYj9vpcgpVkoB3mk6OtXMhkv8YZw== X-Google-Smtp-Source: AKy350Z0cQ23dfmrxicebK+KYirmR35YSZ+pTIA6iDuQB6Y3G/mNGad7wXSF0g8L67pFNpH8xcHoelQKSwTskg== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a81:ae23:0:b0:541:7237:6e6b with SMTP id m35-20020a81ae23000000b0054172376e6bmr10436707ywh.0.1680158097247; Wed, 29 Mar 2023 23:34:57 -0700 (PDT) Date: Thu, 30 Mar 2023 06:34:48 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.0.423.gd6c402a77b-goog Message-ID: <20230330063450.2289058-1-joychakr@google.com> Subject: [PATCH v5 0/2] spi: dw: DW SPI DMA Driver updates From: Joy Chakraborty To: Serge Semin , Mark Brown Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, manugautam@google.com, rohitner@google.com, Joy Chakraborty Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This Patch series adds support for 32 bits per word trasfers using DMA and some defensive checks around dma controller capabilities. Tested-by: Serge Semin Reviewed-by: Serge Semin --- V1 Changes : Add support for AxSize=4 bytes to support 32bits/word. --- V1->V2 Changes : Add dma capability check to make sure address widths are supported. --- V2->V3 Changes : Split changes , add DMA direction check and other cosmetic chnages. --- V3->V4 Changes : Fix Sparce Warning | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202303270715.w9sMJhIh-lkp@intel.com/ --- V4->V5 Changes : Preserve reverse xmas Tree order, move direction check before initalisation of further capabilities, remove zero initialisations, remove error OR'ing. --- Joy Chakraborty (2): spi: dw: Add 32 bpw support to DW DMA Controller spi: dw: Add dma controller capability checks drivers/spi/spi-dw-dma.c | 70 ++++++++++++++++++++++++++++++++-------- drivers/spi/spi-dw.h | 1 + 2 files changed, 57 insertions(+), 14 deletions(-)