From patchwork Thu Jan 19 03:51:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brad Larson X-Patchwork-Id: 645309 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 27BBFC38142 for ; Thu, 19 Jan 2023 04:29:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230198AbjASE3J (ORCPT ); Wed, 18 Jan 2023 23:29:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231178AbjASE1G (ORCPT ); Wed, 18 Jan 2023 23:27:06 -0500 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (mail-bn8nam04on2044.outbound.protection.outlook.com [40.107.100.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96AB037B71; Wed, 18 Jan 2023 20:25:18 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=MeQ1i+rh09jK7cw3K0oAnBe57x9QsCov0H/JZgNluEBkByfTXuZujpm/2Ox2l5r5H688DLZdjUZBlzi00MXgXLlA9BD/qFWY68xyXQWQWoHU6WICGm2Xt/ryIeEZli6ajaqpB1G7e0mKX4eE1wTXIaIgXdi+NauPt16ctUj3D6bx3v0/R2WC7+hfXfqehPnVSEC1Te3v2ljOwsy7exbZSin4RFAHVuHai5m7eIitxSOdzlgRgCNQO+AYaAaAIoKuUGR3Q9vmIlvQDtofVIm/rQIxkZPccMBcW4ojcmPUD7nj0/9yf1fboTV/iIZ2nxzVdcbIOIr0y5NVdSYgQ9GXDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=ulh9dhCQ0Y1jVBFO0FQi7/v9JSmPpQrHfos2awuevGM=; b=lFMpEuDLQBSaJ0wU5sSLGY3h16Zm9LyKZjutm3A+xX38WOq23Egg0KJ0M/TROrU8vt/gLbQgrjUxBkUz52WQnsxbFai0w8LhCdzIaAzvAyV10jUpGYTUGaGfQEqaqVNAoD7V4FIEvJpcv24IqXDZiOIyt26J07dK6zZuM1ehI4uPqaR6wGohZ1rxoCznNydLiD1xA383eJnRM/OxVeoOqU/d5GNL3CqLX1ge4YgqyDNXMZcSC4AMVFeEQMBrTllizc5Tgf9qvNPHk78c3rVGtPR+sfZdUpRSNQJMHPN1SaDsB/2gRONPytWQ5nly9mG+xVtdA0aUmtzun0NKuM5W8g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.infradead.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ulh9dhCQ0Y1jVBFO0FQi7/v9JSmPpQrHfos2awuevGM=; b=gw/+2TMnDMZP/gu+QSWvSOi7NzAwU++Q3MXN7iw9jaIh+TgghTlV2LhOqZBttSC9Z+d9IKQ4TJCbD9zsUeIniVYsPaOtG1Wnzz+iTp56U7GqpV8+ptKx04ad60zvEZ2klylNSz2qC5EAWOzdF+FZn1OedFkUx+XewYwJgH8CTXQ= Received: from MW4PR04CA0330.namprd04.prod.outlook.com (2603:10b6:303:82::35) by PH8PR12MB6842.namprd12.prod.outlook.com (2603:10b6:510:1c9::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6002.24; Thu, 19 Jan 2023 03:52:59 +0000 Received: from CO1NAM11FT027.eop-nam11.prod.protection.outlook.com (2603:10b6:303:82:cafe::e0) by MW4PR04CA0330.outlook.office365.com (2603:10b6:303:82::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6002.19 via Frontend Transport; Thu, 19 Jan 2023 03:52:59 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT027.mail.protection.outlook.com (10.13.174.224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6002.13 via Frontend Transport; Thu, 19 Jan 2023 03:52:58 +0000 Received: from platform-dev1.pensando.io (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Wed, 18 Jan 2023 21:52:54 -0600 From: Brad Larson To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v9 12/15] mmc: sdhci-cadence: Enable device specific override of writel() Date: Wed, 18 Jan 2023 19:51:33 -0800 Message-ID: <20230119035136.21603-13-blarson@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230119035136.21603-1-blarson@amd.com> References: <20230119035136.21603-1-blarson@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT027:EE_|PH8PR12MB6842:EE_ X-MS-Office365-Filtering-Correlation-Id: 8ebe0c8a-02f8-4e04-35bf-08daf9d0a7d3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230022)(4636009)(396003)(346002)(376002)(39860400002)(136003)(451199015)(36840700001)(40470700004)(46966006)(81166007)(82740400003)(36860700001)(70586007)(356005)(8936002)(5660300002)(7416002)(2906002)(70206006)(7406005)(4326008)(40480700001)(8676002)(6916009)(41300700001)(1076003)(26005)(2616005)(40460700003)(16526019)(82310400005)(186003)(336012)(83380400001)(47076005)(426003)(316002)(54906003)(6666004)(478600001)(36756003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jan 2023 03:52:58.9091 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8ebe0c8a-02f8-4e04-35bf-08daf9d0a7d3 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT027.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6842 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org SoCs with device specific Cadence implementation, such as setting byte-enables before the write, need to override writel(). Add a callback where the default is writel() for all existing chips. Signed-off-by: Brad Larson --- Changes since v6: - No change to this patch but as some patches are deleted and this is a respin the three successive patches to sdhci-cadence.c are patches 12, 13, and 14 which do the following: 1. Add ability for Cadence specific design to have priv writel(). 2. Add Elba SoC support that requires its own priv writel() for byte-lane control . 3. Add support for mmc hardware reset. --- drivers/mmc/host/sdhci-cadence.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c index 6f2de54a5987..708d4297f241 100644 --- a/drivers/mmc/host/sdhci-cadence.c +++ b/drivers/mmc/host/sdhci-cadence.c @@ -67,6 +67,7 @@ struct sdhci_cdns_phy_param { struct sdhci_cdns_priv { void __iomem *hrs_addr; bool enhanced_strobe; + void (*priv_writel)(struct sdhci_cdns_priv *priv, u32 val, void __iomem *reg); unsigned int nr_phy_params; struct sdhci_cdns_phy_param phy_params[]; }; @@ -90,6 +91,12 @@ static const struct sdhci_cdns_phy_cfg sdhci_cdns_phy_cfgs[] = { { "cdns,phy-dll-delay-strobe", SDHCI_CDNS_PHY_DLY_STROBE, }, }; +static inline void cdns_writel(struct sdhci_cdns_priv *priv, u32 val, + void __iomem *reg) +{ + writel(val, reg); +} + static int sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv, u8 addr, u8 data) { @@ -104,17 +111,17 @@ static int sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv, tmp = FIELD_PREP(SDHCI_CDNS_HRS04_WDATA, data) | FIELD_PREP(SDHCI_CDNS_HRS04_ADDR, addr); - writel(tmp, reg); + priv->priv_writel(priv, tmp, reg); tmp |= SDHCI_CDNS_HRS04_WR; - writel(tmp, reg); + priv->priv_writel(priv, tmp, reg); ret = readl_poll_timeout(reg, tmp, tmp & SDHCI_CDNS_HRS04_ACK, 0, 10); if (ret) return ret; tmp &= ~SDHCI_CDNS_HRS04_WR; - writel(tmp, reg); + priv->priv_writel(priv, tmp, reg); ret = readl_poll_timeout(reg, tmp, !(tmp & SDHCI_CDNS_HRS04_ACK), 0, 10); @@ -191,7 +198,7 @@ static void sdhci_cdns_set_emmc_mode(struct sdhci_cdns_priv *priv, u32 mode) tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06); tmp &= ~SDHCI_CDNS_HRS06_MODE; tmp |= FIELD_PREP(SDHCI_CDNS_HRS06_MODE, mode); - writel(tmp, priv->hrs_addr + SDHCI_CDNS_HRS06); + priv->priv_writel(priv, tmp, priv->hrs_addr + SDHCI_CDNS_HRS06); } static u32 sdhci_cdns_get_emmc_mode(struct sdhci_cdns_priv *priv) @@ -223,7 +230,7 @@ static int sdhci_cdns_set_tune_val(struct sdhci_host *host, unsigned int val) */ for (i = 0; i < 2; i++) { tmp |= SDHCI_CDNS_HRS06_TUNE_UP; - writel(tmp, reg); + priv->priv_writel(priv, tmp, reg); ret = readl_poll_timeout(reg, tmp, !(tmp & SDHCI_CDNS_HRS06_TUNE_UP), @@ -386,6 +393,7 @@ static int sdhci_cdns_probe(struct platform_device *pdev) priv->nr_phy_params = nr_phy_params; priv->hrs_addr = host->ioaddr; priv->enhanced_strobe = false; + priv->priv_writel = cdns_writel; host->ioaddr += SDHCI_CDNS_SRS_BASE; host->mmc_host_ops.hs400_enhanced_strobe = sdhci_cdns_hs400_enhanced_strobe;