From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D81C6C433E3 for ; Fri, 19 Jun 2020 09:40:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B327420786 for ; Fri, 19 Jun 2020 09:40:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JM9nN6h3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731816AbgFSJjs (ORCPT ); Fri, 19 Jun 2020 05:39:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731780AbgFSJjr (ORCPT ); Fri, 19 Jun 2020 05:39:47 -0400 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDA7DC06174E; Fri, 19 Jun 2020 02:39:46 -0700 (PDT) Received: by mail-wr1-x443.google.com with SMTP id b6so9005201wrs.11; Fri, 19 Jun 2020 02:39:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=LC8E3Y9/cZsWTCk2xE83iqpOMxdGPU0RIo/1PT/NfBY=; b=JM9nN6h3Wf+VZr59ZKO/S7Aa0zYO5zeeRus67B+Bdowk//H1aFgC4E0+ZKl438x++w RcTppmWDewOSBCbw7aFkl/TVmPxswrTYM2LJ9gsW+s23qQgZe8bsx71INvJKct4du/IO 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ABdhPJzkSKEI/EM49nWUYP2hvrla2WBTJ/Lj59062jge03SvRmfJcJwGnAVaLEh8n3dN2jkyMOwo0g== X-Received: by 2002:a5d:5483:: with SMTP id h3mr3217410wrv.10.1592559585720; Fri, 19 Jun 2020 02:39:45 -0700 (PDT) Received: from ziggy.stardust ([213.195.114.138]) by smtp.gmail.com with ESMTPSA id v27sm7123851wrv.81.2020.06.19.02.39.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Jun 2020 02:39:45 -0700 (PDT) Subject: Re: [PATCH v5 3/4] dmaengine: mediatek-cqdma: add dma mask for capability To: EastL , Sean Wang Cc: vkoul@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, wsd_upstream@mediatek.com References: <1592553902-30592-1-git-send-email-EastL.Lee@mediatek.com> <1592553902-30592-4-git-send-email-EastL.Lee@mediatek.com> From: Matthias Brugger Autocrypt: addr=matthias.bgg@gmail.com; prefer-encrypt=mutual; keydata= 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List-ID: X-Mailing-List: devicetree@vger.kernel.org On 19/06/2020 10:05, EastL wrote: > This patch add dma mask for capability. > > Signed-off-by: EastL > --- > drivers/dma/mediatek/mtk-cqdma.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c > index 905bbcb..ed33c64 100644 > --- a/drivers/dma/mediatek/mtk-cqdma.c > +++ b/drivers/dma/mediatek/mtk-cqdma.c > @@ -117,6 +117,7 @@ struct mtk_cqdma_vchan { > * @clk: The clock that device internal is using > * @dma_requests: The number of VCs the device supports to > * @dma_channels: The number of PCs the device supports to > + * @dma_mask: A mask for DMA capability > * @vc: The pointer to all available VCs > * @pc: The pointer to all the underlying PCs > */ > @@ -126,6 +127,7 @@ struct mtk_cqdma_device { > > u32 dma_requests; > u32 dma_channels; > + u32 dma_mask; > struct mtk_cqdma_vchan *vc; > struct mtk_cqdma_pchan **pc; > }; > @@ -607,6 +609,21 @@ static int mtk_cqdma_probe(struct platform_device *pdev) > cqdma->dma_channels = MTK_CQDMA_NR_PCHANS; > } > > + if (pdev->dev.of_node) > + err = of_property_read_u32(pdev->dev.of_node, > + "dma-channel-mask", > + &cqdma->dma_mask); > + if (err) { > + dev_warn(&pdev->dev, > + "Using 0 as missing dma-channel-mask property\n"); > + cqdma->dma_mask = 0; > + } > + > + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(cqdma->dma_mask))) { > + dev_warn(&pdev->dev, "DMA set mask fail\n"); fail -> failed With this: Reviewed-by: Matthias Brugger > + return -EINVAL; > + } > + > cqdma->pc = devm_kcalloc(&pdev->dev, cqdma->dma_channels, > sizeof(*cqdma->pc), GFP_KERNEL); > if (!cqdma->pc) >