From patchwork Thu Apr 27 12:33:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joy Chakraborty X-Patchwork-Id: 679526 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 E7EF4C77B61 for ; Thu, 27 Apr 2023 12:33:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243117AbjD0MdX (ORCPT ); Thu, 27 Apr 2023 08:33:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242961AbjD0MdW (ORCPT ); Thu, 27 Apr 2023 08:33:22 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF55C420A for ; Thu, 27 Apr 2023 05:33:20 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-b9a8075bd7cso683721276.1 for ; Thu, 27 Apr 2023 05:33:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1682598800; x=1685190800; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=PCcqnfxouwoiDswqAajWA4urOkAKuA44YgC+Tktp544=; b=3KGaMF9mrtJ0d4l78cukq0C5LMKpgS2XhpTcB1wXE8fSquZXHLudJlb1nMx14VIr+y bXgagFXM0Rzz/hODdXMyk9Vu1Qyqez2fj22KHHuL8ZivYVGSPAN/BzDycQequQVtu9+r u+YyloxqFCKHBiRG+MfQmjZMQHra70t5pVYB01OWJ+H6L43DKfCmCV4QljH374IjOd2t oWuNKaAr7A8vp0+m8LAyUrfDAu1VXPyb2YKQFenM6j/d8Q5s911Ennh7CwXFjHdQ9hMr zPuT9vL53taAE9oemtvl+ntgX7mTGO6VYQbRyWSnLYtVFT0BSwUk906i6CoElPjdIb/A 71OA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682598800; x=1685190800; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=PCcqnfxouwoiDswqAajWA4urOkAKuA44YgC+Tktp544=; b=CfBBHdeEvBlY7fJatBgi8liUZ0SdQtPJpER9zy2jRHz5yB9UBZu7+lemRbl/LQVzFV R48YLas+2zL6eKX/GRm2WtDTqnNhmCm5KE5TbXZWXkRRBRPiZZbiG0bD459KmL0dMwMC 6IbvMwjNx4sjKXcDlzQu7W5Qvyvi4VWQjURC9v6edtyWtKdffVlYHLhu8P03jpXJEnRE jDIQWOxgrIqWxaziwH2nQcZn3o8Sbcx3WmDEtmhA5/Pxw5i6VxMwJSEv7qhIG3304yTz v5zZxJmQU6lgNriBXoFHQq4nVp/YGEJzrtGUagpLltjS8/TAVUUQWKGhX8QJ+vkyHBgM 06ag== X-Gm-Message-State: AC+VfDzSsTFB3fZI8kTOgLyxufD758TvUQoRbPkYXceuQXR1NSeNcnl/ IDrRDEQ8RVoRRQKiFqROo1SdP7dRTtvEWA== X-Google-Smtp-Source: ACHHUZ6VGEA8UqyHEXqSEHVtuSavKR86WSAguD4vhAU2jlNWJZn2nC3qLkYSr/unfwYUfJOxQNhC2lTMn0cgjg== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a05:6902:100e:b0:b8b:f584:6b73 with SMTP id w14-20020a056902100e00b00b8bf5846b73mr479350ybt.10.1682598800223; Thu, 27 Apr 2023 05:33:20 -0700 (PDT) Date: Thu, 27 Apr 2023 12:33:09 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.1.495.gc816e09b53d-goog Message-ID: <20230427123314.1997152-1-joychakr@google.com> Subject: [PATCH v9 0/5] spi: dw: DW SPI DMA Driver updates From: Joy Chakraborty To: Serge Semin , Mark Brown , Andy Shevchenko 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. --- 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. --- V5->V6 Changes : -Remove case of n_bytes=3 using 4_bytes buswidth -Avoid forward decaration -Break capability check patch into 2 -round n_bytes to power of 2 ( Bug Fix) -Add more explanation in commit text. --- V6->V7 Changes : Remove extra spaces, refer to functions in commit as func() --- V7->V8 Changes : Minor commment updates in patch 4/5 --- V8->V9 Changes : Minor formatting changes in patch 5/5 --- Joy Chakraborty (5): spi: dw: Add 32 bpw support to SPI DW DMA driver spi: dw: Move dw_spi_can_dma() spi: dw: Add DMA directional capability check spi: dw: Add DMA address widths capability check spi: dw: Round of n_bytes to power of 2 drivers/spi/spi-dw-core.c | 5 ++- drivers/spi/spi-dw-dma.c | 76 +++++++++++++++++++++++++++++---------- drivers/spi/spi-dw.h | 1 + 3 files changed, 63 insertions(+), 19 deletions(-)