From patchwork Tue Apr 18 05:28:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joy Chakraborty X-Patchwork-Id: 675556 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 04B45C77B75 for ; Tue, 18 Apr 2023 05:29:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230302AbjDRF3K (ORCPT ); Tue, 18 Apr 2023 01:29:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230291AbjDRF3J (ORCPT ); Tue, 18 Apr 2023 01:29:09 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAEF8524D for ; Mon, 17 Apr 2023 22:29:08 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-54f89e7de94so165964087b3.17 for ; Mon, 17 Apr 2023 22:29:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1681795748; x=1684387748; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=475zu7r4GSDH4bCdvfnE1q0yMJCUwMj3yvNxH13Y90Y=; b=LH+/MVHL3qc9T+wa3AcuoBK6tNVaKlilULvXtbRsdiDzi10/aS7aVqKhogaYBgdytt 9GwMhv7FHHLcXm9BqRGCnlasI51mvlHXKbdP0mJGdD6XPRBFrF80K5KzZjd1Z9qqseim da5PDhfiijeetDA+z50L7z1bbLpEcXc7S2pVPLZfT2/JDoae1BdqpKXlFbaiNSvwJQWE x1f/rGWpZzmuXQwxZDiXzBqdb5HsE6YIsYmt3oRzX1uqcg8M6g+GqvXOGCQ8M9d/6ELx EXM1j4HTROynYC3bKVBZAS74cQUerCEMuHUBSCg2jBy1zdJqnOqZtLlBa238iFwMu+qW 2Wvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681795748; x=1684387748; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=475zu7r4GSDH4bCdvfnE1q0yMJCUwMj3yvNxH13Y90Y=; b=JjpzjBYAzu+RnJHA0W+uvseW25s9DxYWWXBZZAE8oLxWPC+OguzORvuGhpIfTwclMg ItDHlNkDFJwQUrL+iq500mzzqdk/CV4vVcixsg5NVeIlw80HD9kUI4KirefYXhzk1KPZ h3Qiz+Aa+n0mFFVPUqvfOQMaal+nu5Exc1Am4PcM43FBvJViidID9GPLVSqg4ZyePnKS dd+ASekqVBgt9ezY/cV1ox0hwmZnxBwE0lEiskbiP156d8BNuGYglsjoHhcAuTHWV9YC RWesHTgDdBkny5OSH7Nyl+mnaVnEC0MnQY+Q+0SmnoJSDrwt9AXBX8WZna9J2FG/4W/s LAjw== X-Gm-Message-State: AAQBX9e1yHmC8rRZYBDa3JKYwbPndNHn11G919Bs+0Q8KjmnbIzd8cqB k1z8zFxZD9GCUTYeNbaUTdm/gkknIO9G+A== X-Google-Smtp-Source: AKy350Yx0snAfdYbBuh4bnriGEJl9PzuzvZ4vlMH12lk1ae2eli45QHDhwN5XY4aPePNhwBmD4fCEYqsft+yyw== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a25:748b:0:b0:b8f:567f:4352 with SMTP id p133-20020a25748b000000b00b8f567f4352mr10863386ybc.3.1681795748077; Mon, 17 Apr 2023 22:29:08 -0700 (PDT) Date: Tue, 18 Apr 2023 05:28:57 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.0.634.g4ca3ef3211-goog Message-ID: <20230418052902.1336866-1-joychakr@google.com> Subject: [PATCH v7 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() --- 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 | 2 +- drivers/spi/spi-dw-dma.c | 75 +++++++++++++++++++++++++++++---------- drivers/spi/spi-dw.h | 1 + 3 files changed, 59 insertions(+), 19 deletions(-)