From patchwork Wed Aug 1 09:36:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ludovic BARRE X-Patchwork-Id: 10551979 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 6D39F15E2 for ; Wed, 1 Aug 2018 09:39:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5A5C22A4D2 for ; Wed, 1 Aug 2018 09:39:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4E9D22A713; Wed, 1 Aug 2018 09:39:45 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DFF7A2A4D2 for ; Wed, 1 Aug 2018 09:39:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Nge8eKhGB1+icL9R3eR5UREbIFRDKyI2dKsdd5lT2J4=; b=qbyzzDpSenrP+q Gq2FhbOteDLmAVtncP9xEw410vbsaN0zrm6p27SHPBrOTzlWrIGAVSb1JmdYVlLoShK51vYE7En4m Li6HFBtH+Fq27K/yfc2rF2BTJTM5bWFXthJowCrOtxq8kkoScrrYaTQAATX+IHAmAGRR8kADlPYaZ H1fjrVmbOTi2TL3nxmyhFPed6PprToyCN3gxAxDFPSPPkle4QFp3MSO9dbs1byb3Y0LPMmHCGaY6X ViK+Oj4oX16gYqHBeU2wYlEmKTEgFBfTWi9tDZlfmCAS1zfQDZ1rg7cYxZDaIl2nLSpinPpzaEI+h KK9N83nDkdcxAaS4/l/A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fknbV-00043f-WF; Wed, 01 Aug 2018 09:39:38 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fknZb-0001eS-PG for linux-arm-kernel@lists.infradead.org; Wed, 01 Aug 2018 09:37:46 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w719Saka016581; Wed, 1 Aug 2018 11:37:35 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2kgdxvjuxr-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 01 Aug 2018 11:37:35 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 1070B38; Wed, 1 Aug 2018 09:37:35 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 538DE288E; Wed, 1 Aug 2018 09:37:34 +0000 (GMT) Received: from SAFEX1HUBCAS24.st.com (10.75.90.95) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.361.1; Wed, 1 Aug 2018 11:37:34 +0200 Received: from lmecxl0923.lme.st.com (10.48.0.237) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Wed, 1 Aug 2018 11:37:33 +0200 From: Ludovic Barre To: Ulf Hansson , Rob Herring Subject: [PATCH 11/14] mmc: mmci: add dma_start callback Date: Wed, 1 Aug 2018 11:36:58 +0200 Message-ID: <1533116221-380-12-git-send-email-ludovic.Barre@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1533116221-380-1-git-send-email-ludovic.Barre@st.com> References: <1533116221-380-1-git-send-email-ludovic.Barre@st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.0.237] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-08-01_03:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180801_023740_218268_AD50D44C X-CRM114-Status: GOOD ( 21.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alexandre Torgue , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Ludovic Barre , Maxime Coquelin , Gerald Baeza , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ludovic Barre This patch adds dma_start callback to mmci_host_ops. Create a generic mmci_dma_start function which regroup common action between variant. Signed-off-by: Ludovic Barre --- drivers/mmc/host/mmci.c | 63 +++++++++++++++++++++++----------------- drivers/mmc/host/mmci.h | 2 ++ drivers/mmc/host/mmci_qcom_dml.c | 1 + 3 files changed, 39 insertions(+), 27 deletions(-) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 177e2e8..642ef19 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -415,6 +415,38 @@ void mmci_dma_release(struct mmci_host *host) host->ops->dma_release(host); } +int mmci_dma_start(struct mmci_host *host, unsigned int datactrl) +{ + struct mmc_data *data = host->data; + int ret; + + ret = mmci_prepare_data(host, data, false); + if (ret) + return ret; + + if (!host->ops || !host->ops->dma_start) + return -EINVAL; + + /* Okay, go for it. */ + dev_vdbg(mmc_dev(host->mmc), + "Submit MMCI DMA job, sglen %d blksz %04x blks %04x flags %08x\n", + data->sg_len, data->blksz, data->blocks, data->flags); + + host->ops->dma_start(host, &datactrl); + + /* Trigger the DMA transfer */ + mmci_write_datactrlreg(host, datactrl); + + /* + * Let the MMCI say when the data is ended and it's time + * to fire next DMA request. When that happens, MMCI will + * call mmci_data_end() + */ + writel(readl(host->base + MMCIMASK0) | MCI_DATAENDMASK, + host->base + MMCIMASK0); + return 0; +} + static void mmci_request_end(struct mmci_host *host, struct mmc_request *mrq) { @@ -721,20 +753,11 @@ int mmci_dmae_prepare_data(struct mmci_host *host, &dmae->dma_desc_current); } -static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) +int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl) { struct dmaengine_priv *dmae = host->dma_priv; struct mmc_data *data = host->data; - int ret; - - ret = mmci_prepare_data(host, host->data, false); - if (ret) - return ret; - /* Okay, go for it. */ - dev_vdbg(mmc_dev(host->mmc), - "Submit MMCI DMA job, sglen %d blksz %04x blks %04x flags %08x\n", - data->sg_len, data->blksz, data->blocks, data->flags); dmae->dma_in_progress = true; dmaengine_submit(dmae->dma_desc_current); dma_async_issue_pending(dmae->dma_current); @@ -742,18 +765,8 @@ static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) if (host->variant->qcom_dml) dml_start_xfer(host, data); - datactrl |= MCI_DPSM_DMAENABLE; - - /* Trigger the DMA transfer */ - mmci_write_datactrlreg(host, datactrl); + *datactrl |= MCI_DPSM_DMAENABLE; - /* - * Let the MMCI say when the data is ended and it's time - * to fire next DMA request. When that happens, MMCI will - * call mmci_data_end() - */ - writel(readl(host->base + MMCIMASK0) | MCI_DATAENDMASK, - host->base + MMCIMASK0); return 0; } @@ -806,6 +819,7 @@ static struct mmci_host_ops mmci_variant_ops = { .get_next_data = mmci_dmae_get_next_data, .dma_setup = mmci_dmae_setup, .dma_release = mmci_dmae_release, + .dma_start = mmci_dmae_start, }; #else /* Blank functions if the DMA engine is not available */ @@ -818,11 +832,6 @@ static inline void mmci_dma_data_error(struct mmci_host *host) { } -static inline int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) -{ - return -ENOSYS; -} - static struct mmci_host_ops mmci_variant_ops = {}; #endif @@ -925,7 +934,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) * Attempt to use DMA operation mode, if this * should fail, fall back to PIO mode */ - if (!mmci_dma_start_data(host, datactrl)) + if (!mmci_dma_start(host, datactrl)) return; /* IRQ mode, map the SG list for CPU reading/writing */ diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index f961f90..3a200a9 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -280,6 +280,7 @@ struct mmci_host_ops { void (*get_next_data)(struct mmci_host *host, struct mmc_data *data); int (*dma_setup)(struct mmci_host *host); void (*dma_release)(struct mmci_host *host); + int (*dma_start)(struct mmci_host *host, unsigned int *datactrl); }; struct mmci_host { @@ -338,3 +339,4 @@ void mmci_dmae_unprepare_data(struct mmci_host *host, void mmci_dmae_get_next_data(struct mmci_host *host, struct mmc_data *data); int mmci_dmae_setup(struct mmci_host *host); void mmci_dmae_release(struct mmci_host *host); +int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl); diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c index 3c9d32e..e6267ad 100644 --- a/drivers/mmc/host/mmci_qcom_dml.c +++ b/drivers/mmc/host/mmci_qcom_dml.c @@ -187,6 +187,7 @@ static struct mmci_host_ops qcom_variant_ops = { .get_next_data = mmci_dmae_get_next_data, .dma_setup = qcom_dma_setup, .dma_release = mmci_dmae_release, + .dma_start = mmci_dmae_start, }; void qcom_variant_init(struct mmci_host *host)