From mboxrd@z Thu Jan 1 00:00:00 1970 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 613DAC7EE26 for ; Fri, 12 May 2023 14:15:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241473AbjELOPH (ORCPT ); Fri, 12 May 2023 10:15:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240231AbjELOPF (ORCPT ); Fri, 12 May 2023 10:15:05 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD48293F8 for ; Fri, 12 May 2023 07:15:02 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-559d8e22306so180186967b3.1 for ; Fri, 12 May 2023 07:15:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683900902; x=1686492902; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=pngyL4TIzS1CvtXscbyCzirkbVA5epZcre6BdDz2Cu0=; b=qhhVHD5EUz8QEdzS65D+tFOdCO3mGVQqdDkwiIO41/w6GP53SZC5Cgdd/8ySrnMp9u RMGjvWHNAYjRJoOGnOCu7tBUxru18cegsPab6aakHul2rIgQSVG+sL7xCf8RkYI8wsGM ZveQG3IqUWPBbEqGZTHTJ0V1Z0V6mkXuLY+A/XpYb7Hy8VuK5tj+aHKtxkt2FlafmXxG sazdsky50gbH7dz7PVWT7RJ9bHa6IFEGbuJYs6Il88+cuFUImCEhjQ9iVi10z22xxXTf rCEWSc9EHlXZCPiMbafqZhewdr1b5P/lzdtkS09oTCLFGyenu6maTqlSiiYPLx9lXoxY +2Dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683900902; x=1686492902; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=pngyL4TIzS1CvtXscbyCzirkbVA5epZcre6BdDz2Cu0=; b=LG/37K0uBD2bVVhsauRk7vZoQqsf3lF077LJXnP7wwDuyHZ5kr58uNzTsSuHYGd2xG ShRz0wwRjp+qoHM3VDz7bllBbS7WXjtl98X7SdrND9fjnv03mJfEs9Z9AuAw10dTP4qR Y5gsrH8YmSuGrniSent96Wc/KWIF+oZ9pITLkDWbjje5KUKDzOqcNhvp0r0eSXAhJYFr frU6bsq4zZhncfMkECqFPoGN9W9sh73V2b3JXzwNb/UcZz7Fki9Xa0qZQBRM0jj3WAga f1lrsLs1pZaaXpgLlah4Z3qMIJVLIsH7bOfnZNBVUrhcf2LLgEHVQMjPSBWu5vsjNy/y bD4w== X-Gm-Message-State: AC+VfDys3sfccGwYNW1fl4tm5v2k7hdHgadyc7PBpptyYfWupyNJacuM phcIV4voCURfUYmr6tr0N2FpKpS3PNq1xg== X-Google-Smtp-Source: ACHHUZ6bQ6Sk65PCTKorMoKm7MPeI89i930xkKy/fV7c9iMCGlP2zcfse3/J6cp5XexLBpEttzeyCRbChaym9g== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a81:cf01:0:b0:55d:9f32:6a12 with SMTP id u1-20020a81cf01000000b0055d9f326a12mr15117610ywi.0.1683900902158; Fri, 12 May 2023 07:15:02 -0700 (PDT) Date: Fri, 12 May 2023 14:14:39 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.1.606.ga4b1b128d6-goog Message-ID: <20230512141445.2026660-1-joychakr@google.com> Subject: [PATCH v2 0/6] dmaengine: pl330: Updates and logical changes for peripheral usecases From: Joy Chakraborty To: Vinod Koul Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, manugautam@google.com, danielmentz@google.com, sjadavani@google.com, Joy Chakraborty Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series makes some initial minor and cosmetic changes: -Add variables and logic to handle separate source and destination AxSize and AxLen. -Use __ffs to calculate AxSize for consistency in the driver -Use switch-case in prep_slave_sg() for consistency -Change args get_burst_len() to remove redundant "len" and add burst_size so that it can be used in multiple places. to majorly enable addition of 2 logical changes in the last 2 patches: -Allow transactions towards memory to use the maximum possible bus width (AxSize) during a memory to peripheral dma usage or vise-versa. -Add logic to copy left over data after executing bursts to the peripheral in singles instead of bursts. --- V1->V2 Changes : Remove Quirk logic and update description texts. --- Joy Chakraborty (6): dmaengine: pl330: Separate SRC and DST burst size and len dmaengine: pl330: Use FFS to calculate burst size dmaengine: pl330: Change if-else to switch-case for consistency dmaengine: pl330: Change unused arg "len" from get_burst_len() dmaengine: pl330: Optimize AxSize for peripheral usecases dmaengine: pl330: Use dma singles for peripheral _dregs drivers/dma/pl330.c | 223 ++++++++++++++++++++++++++++++++++++-------- 1 file changed, 185 insertions(+), 38 deletions(-) -- 2.40.1.606.ga4b1b128d6-goog