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 X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52E95C433F5 for ; Wed, 29 Aug 2018 07:03:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D3912089B for ; Wed, 29 Aug 2018 07:03:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="FTt8+uiI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D3912089B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727816AbeH2K7K (ORCPT ); Wed, 29 Aug 2018 06:59:10 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:37307 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727785AbeH2K7J (ORCPT ); Wed, 29 Aug 2018 06:59:09 -0400 Received: by mail-pl1-f193.google.com with SMTP id d12-v6so1893802pls.4 for ; Wed, 29 Aug 2018 00:03:44 -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=F6JNjnqOBxraoAmJ2G9nQq3A9aaEWZWPodCkmFELEA4=; b=FTt8+uiIDtMNr76i4SHHbEdmo3x0fQckM4/6nQz3cKegXczL/kS8xRQ86loF+ym1uP 3Fpd5LHKwS30oEPpmqKE/5WBxvTynx6qm7zdYVXJzSnMnivIcq/YIMSSdvCqnFxpwflb ohKMYLCNY5PjsqLIsr49T3uTBongbaNEe/jJg= 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=F6JNjnqOBxraoAmJ2G9nQq3A9aaEWZWPodCkmFELEA4=; b=UydP+YzQ4Agt3W67qlrekxq4/q9sasFw1w3btTTFHzcmbyp0JUGO4+jjuzyOrv0f05 MaLd20NkklNibnDWkAtbao7GX7bBaHdRVgCqUkDt17c93Sp/ZKbKOtac883Z7lZ8QZKZ EhZ6jcKFPa96L/MolL+qwL8UeVeWM1Obmsg7l3uRsFMiL243ELLS0x/msKD71xh/MeIt U/xowuQ4PxexWVnNKonl9/BzsR7KutzFwHcwgatRi4sFXqC/nVcVAGbqQzWpVdFYybTK G+aM4wHaWU0tquew9kYsNmf02bFGsIpUKQM/5gxH6e4pJRS3SPUE8+y+oCDUoIQ/WhaF OXdw== X-Gm-Message-State: APzg51Aiwfq/dsvwVCboYtMD1t1lJbRRvfOgQpJb7IO4DgH/1UJOSwz1 jA1nAqB7aH/QYXjrkB4AI034UA== X-Google-Smtp-Source: ANB0Vdb9jhj0ILPiroZ4dZvMX4HK1fY7gO+RlY8olSezD7WgLyIVb3OxW7/irkjFgdX7242wF/scqA== X-Received: by 2002:a17:902:a987:: with SMTP id bh7-v6mr4834081plb.182.1535526224623; Wed, 29 Aug 2018 00:03:44 -0700 (PDT) Received: from ubt.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id d81-v6sm4317342pfj.122.2018.08.29.00.03.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 29 Aug 2018 00:03:43 -0700 (PDT) From: Chunyan Zhang To: Ulf Hansson , Adrian Hunter 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 V7 7/9] mmc: sdhci: SDMA may use Auto-CMD23 in v4 mode Date: Wed, 29 Aug 2018 15:03:02 +0800 Message-Id: <1535526184-32718-8-git-send-email-zhang.chunyan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1535526184-32718-1-git-send-email-zhang.chunyan@linaro.org> References: <1535526184-32718-1-git-send-email-zhang.chunyan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- drivers/mmc/host/sdhci.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 62d843ac90..ac92e0f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3834,10 +3834,14 @@ 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->v4_mode && !(host->flags & SDHCI_USE_SDMA)) || + (host->v4_mode && (host->flags & SDHCI_USE_SDMA))) && !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) { host->flags |= SDHCI_AUTO_CMD23; DBG("Auto-CMD23 available\n"); -- 2.7.4