From patchwork Thu Aug 30 08:21:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunyan Zhang X-Patchwork-Id: 10581349 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C3CA613AC for ; Thu, 30 Aug 2018 08:22:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4E7A2B663 for ; Thu, 30 Aug 2018 08:22:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A98302B6C5; Thu, 30 Aug 2018 08:22:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 580A62B663 for ; Thu, 30 Aug 2018 08:22:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728092AbeH3MX2 (ORCPT ); Thu, 30 Aug 2018 08:23:28 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:42343 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728090AbeH3MX1 (ORCPT ); Thu, 30 Aug 2018 08:23:27 -0400 Received: by mail-pg1-f196.google.com with SMTP id y4-v6so3560995pgp.9 for ; Thu, 30 Aug 2018 01:22:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Ah8c1s4NQMeDLK8VDxuLb0Way+MTHYiFrnLMxjLrOic=; b=Ci2esfNnkrultBR2JC8oOpP8798ra5xy2lQVamINyr0vxNV8Va0QyFMobOXx5BrTzh 6AYTQroAWBjY4/dEK9n5xbBTh1ejAtr+e3CihREeL95NRivmUT87sZVVp+HWAHO8tLJb gQM80n7RDnruyd9l43yPB0goqCGQYGKbd3n5M= 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:in-reply-to :references; bh=Ah8c1s4NQMeDLK8VDxuLb0Way+MTHYiFrnLMxjLrOic=; b=kTplOYyV6ggFmhTLa2xTNTvq+1VM9oDM72/fnDO1uO1BAJQihpnXlZMQjZkSdZiKlk 93OubOl0B9/0Dej/F5gsXtxkTKK1jig9Mcd4b6ZVtL5XbIrgb1GeUfxJVvbDbj+m+u5d dE2YwoK3SHTkcgrjJbtsxImM5SCdFKn2hLgnyN3mJ5EXdaWtBi4+JC6y8XkN5KOKh91y VYbjRBJvkNWdh/5l3yEEjROvi9CzCMGpEjq6VxI21TQK96uVYDb1325YvndEGIQ4upt7 vEBejUDDkrn1qLk/ErvVGp4cuQ9rWcZlGvqH60hQznaTJ2NVJCQe/ruKN1BJlKs0DaSN XRaQ== X-Gm-Message-State: APzg51BEULMfTL4TcJagA4lX+3U4QZvJ/m39Q3Fb94PCT9e2XqqxShWp gV9uPjcHMXxsZ9DmoSWpze8m8w== X-Google-Smtp-Source: ANB0VdZWBTJncpy1V6TzMRLY09UI0jsGKsfJJUJOENWY9BCVBqUYzIaws57rmTIUpRm0yRuyWySlqg== X-Received: by 2002:aa7:88d3:: with SMTP id p19-v6mr9499481pfo.160.1535617349542; Thu, 30 Aug 2018 01:22:29 -0700 (PDT) Received: from ubt.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id j22-v6sm8224885pfh.45.2018.08.30.01.22.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 30 Aug 2018 01:22:28 -0700 (PDT) From: Chunyan Zhang To: Ulf Hansson , Adrian Hunter , Rob Herring Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Orson Zhai , Baolin Wang , Billows Wu , Jason Wu , Chunyan Zhang , Chunyan Zhang Subject: [PATCH V8 7/9] mmc: sdhci: SDMA may use Auto-CMD23 in v4 mode Date: Thu, 30 Aug 2018 16:21:43 +0800 Message-Id: <1535617305-16952-8-git-send-email-zhang.chunyan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1535617305-16952-1-git-send-email-zhang.chunyan@linaro.org> References: <1535617305-16952-1-git-send-email-zhang.chunyan@linaro.org> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When Host Version 4 Enable is set to 1, SDMA uses ADMA System Address register (05Fh-058h) instead of using register (000h-004h) to indicate its system address of data location. The register (000h-004h) is re-assigned to 32-bit Block Count and Auto CMD23 argument, so then SDMA may use Auto CMD23. Signed-off-by: Chunyan Zhang Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 62d843ac90..606d331 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3834,10 +3834,13 @@ int sdhci_setup_host(struct sdhci_host *host) if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) host->flags |= SDHCI_AUTO_CMD12; - /* Auto-CMD23 stuff only works in ADMA or PIO. */ + /* + * For v3 mode, Auto-CMD23 stuff only works in ADMA or PIO. + * For v4 mode, SDMA may use Auto-CMD23 as well. + */ if ((host->version >= SDHCI_SPEC_300) && ((host->flags & SDHCI_USE_ADMA) || - !(host->flags & SDHCI_USE_SDMA)) && + !(host->flags & SDHCI_USE_SDMA) || host->v4_mode) && !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) { host->flags |= SDHCI_AUTO_CMD23; DBG("Auto-CMD23 available\n");