From patchwork Wed Jan 29 15:36:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 11356405 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2B45814E3 for ; Wed, 29 Jan 2020 15:38:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D5827206F0 for ; Wed, 29 Jan 2020 15:38:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KP4Vp2sx"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=st.com header.i=@st.com header.b="DDpHNdKJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D5827206F0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=st.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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=3Pf0T00kwwiTQmryVkghzURUF8v5gY6AwAbd1dCEL3I=; b=KP4Vp2sxAmcwjE 3cMOBQOIX8xPY1gMvDhlDlegLYUdXlgxmeSyzQrHOgwVNP9Pv+ZVSQ6+pYX2ChZf2yCWoB6V45NxC K4ykCJJ9cxWQabhK4PiAw6MYfpQSfC04wIm0oaU7vZejbCMsKxdDHSR/uR6QGXWOLciHqfx3965h1 +KyMMBmuh+3gXRFAXNuSiCW1qfRKhz9wHwM7xAyZLOShkJ/rcG42J68Tje4UjLSE4IfjmFTLkjM8S pqgOa4GgArzHYtJZvIYus0u3mAGRcWOhN+oGIqASW/8VfNgKokxSApWVE++fYWfX2dQADw8aKSMDX MZ1Jvtqj0WXCnvMrOVzw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwpQQ-0006KE-IL; Wed, 29 Jan 2020 15:38:42 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwpOa-0004jR-CA for linux-arm-kernel@lists.infradead.org; Wed, 29 Jan 2020 15:36:53 +0000 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00TFNBY8019444; Wed, 29 Jan 2020 16:36:37 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=AftG5z+N17+/aKK5rA8xT7aJNL2Vyvyl7T7R+UeirkA=; b=DDpHNdKJ02FAGVPens/IbVD4G5USzy1RxDXJLEQ55d/zr6gldzhDUX3PizE9xvyUlzJw cWDF+fjHZXHq8SDKPlB4jiJ4uhuCebTVzh681T3oun0q+JTqtUPZgaGGErk411egmX1C 9pjOE96zV/gX6o1nLLzF+eMh7jvySoqOmADVbChz4I3IxpeqKzaCMwkTYQddjU65cW5E BrZp7Qa4BYjDfUgaalLPMp2yv8IBvVuT2hCmOLvDYCw5F1iRNXmMwRj+T9PER5XJoUTq FZvav89dlKtRxFpoP3JiWgjcCqP8RJtcLznnwpmf8k3ZrXXXq+3Nhc+68Wx9flQ480Y5 /A== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2xrcay3vb4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Jan 2020 16:36:37 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 1DF04100034; Wed, 29 Jan 2020 16:36:37 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 10CD72BC7C2; Wed, 29 Jan 2020 16:36:37 +0100 (CET) Received: from localhost (10.75.127.46) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 29 Jan 2020 16:36:36 +0100 From: Amelie Delaunay To: Vinod Koul , Dan Williams , Maxime Coquelin , Alexandre Torgue Subject: [PATCH 4/8] dmaengine: stm32-dma: enable descriptor_reuse Date: Wed, 29 Jan 2020 16:36:24 +0100 Message-ID: <20200129153628.29329-5-amelie.delaunay@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200129153628.29329-1-amelie.delaunay@st.com> References: <20200129153628.29329-1-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG2NODE2.st.com (10.75.127.5) To SFHDAG3NODE2.st.com (10.75.127.8) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-01-29_03:2020-01-28, 2020-01-29 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200129_073648_816327_9033BCC0 X-CRM114-Status: GOOD ( 11.98 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [62.209.51.94 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Amelie Delaunay , linux-kernel@vger.kernel.org, Pierre-Yves MORDRET , dmaengine@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, 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 From: Pierre-Yves MORDRET Enable client to resubmit already processed descriptors in order to save descriptor creation time. Signed-off-by: Pierre-Yves MORDRET Signed-off-by: Amelie Delaunay --- drivers/dma/stm32-dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index c8bbe08b8e32..25f7281932bd 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -554,6 +554,7 @@ static void stm32_dma_start_transfer(struct stm32_dma_chan *chan) sg_req = &chan->desc->sg_req[chan->next_sg]; reg = &sg_req->chan_reg; + reg->dma_scr &= ~STM32_DMA_SCR_EN; stm32_dma_write(dmadev, STM32_DMA_SCR(chan->id), reg->dma_scr); stm32_dma_write(dmadev, STM32_DMA_SPAR(chan->id), reg->dma_spar); stm32_dma_write(dmadev, STM32_DMA_SM0AR(chan->id), reg->dma_sm0ar); @@ -1343,6 +1344,7 @@ static int stm32_dma_probe(struct platform_device *pdev) dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; dd->max_burst = STM32_DMA_MAX_BURST; + dd->descriptor_reuse = true; dd->dev = &pdev->dev; INIT_LIST_HEAD(&dd->channels);