From patchwork Wed Jul 13 14:21:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 12916829 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 C63A0C433EF for ; Wed, 13 Jul 2022 14:22:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229497AbiGMOWT (ORCPT ); Wed, 13 Jul 2022 10:22:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230440AbiGMOWS (ORCPT ); Wed, 13 Jul 2022 10:22:18 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C74F232EC9; Wed, 13 Jul 2022 07:22:15 -0700 (PDT) Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 26DAo2xC027405; Wed, 13 Jul 2022 16:21:58 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=fyyQJuRm529q54ZzHitzFOjpOk9IVG1ad4Uu2OC7hq0=; b=68yKYK4wfTt3+A2MhPwOlcsYqnjQaiKkDWw1nCPfxL0sqj/O+i9200KmslXnfz0qRbcG KBeyAAy6gIrSX5A4PfeP2Z9gFqjhvEA34Onn9CHPhzhmVj8tybSZ89NrNWwBDoiQCF8v winQImR7+R3h70G7ouQBDUbjeq0QnnkynsaYE4wnqhkvTwlqmX5n9nfJ0pIRnKJOVvuD sZ/+vTfMBoJEp3/c3Ue48SmY0M/po9T9Jcgw50JbpO1G5oT2tnz1WxfSE+JKpNyfbFAa JeC4i1czLZt9z7DBFV3kTDKmpNKY8fa0yQQ5EKFLjJRnrOuwEpiufZ1WIQC7js3dSGYJ 2A== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3h93cwj2h3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Jul 2022 16:21:58 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 5AB8A10002A; Wed, 13 Jul 2022 16:21:58 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 5564A226FC7; Wed, 13 Jul 2022 16:21:58 +0200 (CEST) Received: from localhost (10.75.127.47) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Wed, 13 Jul 2022 16:21:57 +0200 From: Amelie Delaunay To: Jonathan Corbet , Vinod Koul , Maxime Coquelin , Alexandre Torgue CC: , , , , , Marek Vasut , Amelie Delaunay Subject: [PATCH v2 2/4] dmaengine: stm32-dmamux: set dmamux channel id in dma features bitfield Date: Wed, 13 Jul 2022 16:21:46 +0200 Message-ID: <20220713142148.239253-3-amelie.delaunay@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220713142148.239253-1-amelie.delaunay@foss.st.com> References: <20220713142148.239253-1-amelie.delaunay@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-13_03,2022-07-13_03,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org STM32 DMAMUX is used with STM32 DMA1 and DMA2: - DMAMUX channels 0 to 7 are connected to DMA1 channels 0 to 7 - DMAMUX channels 8 to 15 are connected to DMA2 channels 0 to 7 STM32 MDMA can be triggered by DMA1 and DMA2 channels transfer complete, and the "request line number" is the DMAMUX channel id (e.g. DMA2 channel 0 triggers MDMA with request line 8). To well configure MDMA, set DMAMUX channel id in DMA features bitfield, so that DMA can update struct dma_slave_config peripheral_config properly. Signed-off-by: Amelie Delaunay --- No changes in v2. --- drivers/dma/stm32-dmamux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/stm32-dmamux.c b/drivers/dma/stm32-dmamux.c index eee0c5aa5fb5..b431f9da9206 100644 --- a/drivers/dma/stm32-dmamux.c +++ b/drivers/dma/stm32-dmamux.c @@ -147,7 +147,7 @@ static void *stm32_dmamux_route_allocate(struct of_phandle_args *dma_spec, mux->request = dma_spec->args[0]; /* craft DMA spec */ - dma_spec->args[3] = dma_spec->args[2]; + dma_spec->args[3] = dma_spec->args[2] | mux->chan_id << 16; dma_spec->args[2] = dma_spec->args[1]; dma_spec->args[1] = 0; dma_spec->args[0] = mux->chan_id - min;