From patchwork Fri Feb 15 19:20:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiz Abbas X-Patchwork-Id: 10815721 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 D267C1390 for ; Fri, 15 Feb 2019 19:18:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C4C892FF5B for ; Fri, 15 Feb 2019 19:18:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B85B22FFBF; Fri, 15 Feb 2019 19:18:25 +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=unavailable 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 5F6BE2FF5B for ; Fri, 15 Feb 2019 19:18:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387429AbfBOTRz (ORCPT ); Fri, 15 Feb 2019 14:17:55 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:47158 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733289AbfBOTRy (ORCPT ); Fri, 15 Feb 2019 14:17:54 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x1FJHmlQ130918; Fri, 15 Feb 2019 13:17:48 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1550258268; bh=cVPL4EPCxVAoyNM/VAl32mgqPwnZGwN/+OPZ2kzGYpg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=RZ8RBfjeisGK9x0Q74k3I7IOqcVV7B78wrv5th3Ap1Z4xpLY95L5TctFm7TePJ22S 3aLolHDgmImTuDL/gsbezlPO77yGKO2XWr6XUcOe5WezOf3WYD5ZAv7CIqfikKouBE qAUpOUnxrseNUJ1kQVShUXVMopAvu7HGlMLOVNQA= Received: from DFLE113.ent.ti.com (dfle113.ent.ti.com [10.64.6.34]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x1FJHmWc049261 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 15 Feb 2019 13:17:48 -0600 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Fri, 15 Feb 2019 13:17:48 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Fri, 15 Feb 2019 13:17:48 -0600 Received: from a0230074-OptiPlex-7010.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id x1FJHV10025256; Fri, 15 Feb 2019 13:17:45 -0600 From: Faiz Abbas To: , , , CC: , , , , , , Subject: [PATCH v2 4/8] mmc: sdhci-omap: Add using external dma Date: Sat, 16 Feb 2019 00:50:29 +0530 Message-ID: <20190215192033.24203-5-faiz_abbas@ti.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190215192033.24203-1-faiz_abbas@ti.com> References: <20190215192033.24203-1-faiz_abbas@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 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 From: Chunyan Zhang sdhci-omap can support both external dma controller via dmaengine framework as well as ADMA which standard SD host controller provides. Fixes by Faiz Abbas : 1. Switch to DMA slave mode when using external DMA 2. Add offset to mapbase Signed-off-by: Chunyan Zhang Signed-off-by: Faiz Abbas --- drivers/mmc/host/Kconfig | 1 + drivers/mmc/host/sdhci-omap.c | 16 +++++++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index f3b442528ed8..5d1189478ee0 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -979,6 +979,7 @@ config MMC_SDHCI_OMAP depends on MMC_SDHCI_PLTFM && OF select THERMAL imply TI_SOC_THERMAL + select MMC_SDHCI_EXTERNAL_DMA if DMA_ENGINE help This selects the Secure Digital Host Controller Interface (SDHCI) support present in TI's DRA7 SOCs. The controller supports diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index c11c18a9aacb..8a05e94fe612 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -696,7 +696,11 @@ static int sdhci_omap_enable_dma(struct sdhci_host *host) struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); - reg |= CON_DMA_MASTER; + reg &= ~CON_DMA_MASTER; + /* Switch to DMA slave mode when using external DMA */ + if (!host->use_external_dma) + reg |= CON_DMA_MASTER; + sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); return 0; @@ -1010,6 +1014,7 @@ static int sdhci_omap_probe(struct platform_device *pdev) const struct of_device_id *match; struct sdhci_omap_data *data; const struct soc_device_attribute *soc; + struct resource *regs; match = of_match_device(omap_sdhci_match, dev); if (!match) @@ -1022,6 +1027,10 @@ static int sdhci_omap_probe(struct platform_device *pdev) } offset = data->offset; + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!regs) + return -ENXIO; + host = sdhci_pltfm_init(pdev, &sdhci_omap_pdata, sizeof(*omap_host)); if (IS_ERR(host)) { @@ -1038,6 +1047,7 @@ static int sdhci_omap_probe(struct platform_device *pdev) omap_host->timing = MMC_TIMING_LEGACY; omap_host->flags = data->flags; host->ioaddr += offset; + host->mapbase = regs->start + offset; mmc = host->mmc; sdhci_get_of_property(pdev); @@ -1105,6 +1115,10 @@ static int sdhci_omap_probe(struct platform_device *pdev) host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning; host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq; + /* Switch to external DMA only if there is the "dmas" property */ + if (of_find_property(dev->of_node, "dmas", NULL)) + sdhci_switch_external_dma(host, true); + ret = sdhci_setup_host(host); if (ret) goto err_put_sync;