From patchwork Fri May 24 18:26:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Stevenson X-Patchwork-Id: 13673480 Received: from mail-wm1-f100.google.com (mail-wm1-f100.google.com [209.85.128.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B92E3F9EC for ; Fri, 24 May 2024 18:27:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.100 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716575278; cv=none; b=LEzz9wMHxf2Tsu1LnSgOCLKCsnDfcROXlVMv8PYTefO/+Xg8IvpKhy2/9LhfSJVaqTJEh11tykh4UDMOzKOLNFWyCJjTwKYe2JPP7QUeey0WqJKQu2dLeN67PGkJlBNd7nhUFvM2KBzP/3HewrllW77xaTeG0qmk8kEz59sQzvk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716575278; c=relaxed/simple; bh=t6EOXzX5NBCieefJXhaqEj/EuhQeMzBIdGFGnmyqFc4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=T/RdlTLPaxPgE+m008qFZpMVbdSAajV0hsh3QXN1WHJZCxEUlYisz4PYmM+gvraNCNAjXffVXjiTHafoaH/GPrKY62/T5YOos/2fdnZPOB/WUBQkwVniWDZ5amxVIjAyWtRL5IIfBRonu3nMzLZ2kKp9fwf92FUEJZJS+psqZIc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=raspberrypi.com; spf=pass smtp.mailfrom=raspberrypi.com; dkim=pass (2048-bit key) header.d=raspberrypi.com header.i=@raspberrypi.com header.b=tyumMzdp; arc=none smtp.client-ip=209.85.128.100 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=raspberrypi.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=raspberrypi.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=raspberrypi.com header.i=@raspberrypi.com header.b="tyumMzdp" Received: by mail-wm1-f100.google.com with SMTP id 5b1f17b1804b1-42017f8de7aso68196345e9.1 for ; Fri, 24 May 2024 11:27:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raspberrypi.com; s=google; t=1716575272; x=1717180072; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=MmjLsXIH2Amncxc11ehW4fWxMk13TiDZ+O44YXe6Wgk=; b=tyumMzdp8FGH9YqbvdldjlPB0bjTiwCyYniuRFs67n7zZL41LXqMUi3apYcvJ/FTA5 M3kAX0WE4j8SDbpzjxwWCCKxbw1u57Nguq/v2FMPSS4uI6dtAxizOCGZ0eBMI+giPfLs QvApk0fZcExSdaNCsei0Em4f1G/bHa02obSiWQYxPJYf2OTrcqNngtG7fqN92qpSMWd4 qD7ebj+Y4Dpe1rZl9wjNyKqKRINFSoYAGtTAXt2pntSVMA26ch4aqH5QiFZPeqmkseQA K4fAR/cssGDV9rbvR/Vs87o/WpMpGCPjJua5UqgwybJZQDrXX7FDKs9zXG64mCd7eDD3 osvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716575272; x=1717180072; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MmjLsXIH2Amncxc11ehW4fWxMk13TiDZ+O44YXe6Wgk=; b=CaUtg2MN2hypf5zFJlWusdHSbsi5m+t7Gjk2kPTr3wnTYiH6A7I1vRpsuLdBBXk/Dr HrgN6jlSFDh0hQCL2DZI5WQL/Ms5fKZTqjguV9LHCxPYjYlWHJVqP5Zm2bRnXrD0gh/z hPnSQKC9f+1DB9oyr+MarW/pjZGWxpMqmjV6CK4kWFHpom8gQLMAC4EFqM2uxBsc6Wf2 NjF/hEvmDnk3H7ZdfC6FHsmFUIPo7Kc6JlCPq0WLWvoLbxUkuOvzZxtshvVw2fRm3hLK bLW4rp2yzOYjq/fLfE3vLBrtjQ31iXCp0s+mX7tWAHkLP+3Yk+H1SppVTieMHshX1BgO NRlw== X-Forwarded-Encrypted: i=1; AJvYcCUkXdi5QXEM7WhQ0udl5kRjO+lyVmvIdPNYwXJ71BMxKnnMGCpPFWsh1VX4Si1ZcaLrsGVNbDyuvKn8l0EcGOQViJJ7n1aItSTn X-Gm-Message-State: AOJu0Yzdn/eOAxAXZviHBDH+TXPjVtTqSb4qQpPsNvViqQ5BmazXA0uF OGhBnC7o8cs5AzYU+434L6ppfqT9tHPhreeH61dz912WbSN0J7AoYENfX2G22p07Iww+s0o34tb vqsFvlpRZ0L1Zd4CbO9flMszuWijz/pEj X-Google-Smtp-Source: AGHT+IGfOa5XBgeYIs/cH5TAMCHbRBfIruDizHffdZ+UPyoZ3jK796PR+KziATsAgtd+BnPEgr+Se5nRlYpt X-Received: by 2002:a05:600c:3114:b0:420:2cbe:7ee8 with SMTP id 5b1f17b1804b1-421089f1394mr28435685e9.6.1716575272442; Fri, 24 May 2024 11:27:52 -0700 (PDT) Received: from raspberrypi.com ([188.39.149.98]) by smtp-relay.gmail.com with ESMTPS id ffacd0b85a97d-3557a1cd354sm56646f8f.101.2024.05.24.11.27.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 May 2024 11:27:52 -0700 (PDT) X-Relaying-Domain: raspberrypi.com From: Dave Stevenson To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Broadcom internal kernel review list , Ray Jui , Scott Branden , Vinod Koul , Maxime Ripard , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Ulf Hansson , Mark Brown , Christoph Hellwig , Marek Szyprowski , Robin Murphy , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Vladimir Murzin , Phil Elwell , Stefan Wahren , Serge Semin Cc: devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mmc@vger.kernel.org, linux-spi@vger.kernel.org, iommu@lists.linux.dev, linux-sound@vger.kernel.org, Stefan Wahren , Dave Stevenson Subject: [PATCH 02/18] dmaengine: bcm2835: Support common dma-channel-mask Date: Fri, 24 May 2024 19:26:46 +0100 Message-Id: <20240524182702.1317935-3-dave.stevenson@raspberrypi.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240524182702.1317935-1-dave.stevenson@raspberrypi.com> References: <20240524182702.1317935-1-dave.stevenson@raspberrypi.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Stefan Wahren Nowadays there is a generic property for dma-channel-mask in the DMA controller binding. So prefer this one instead of the old vendor specific one. Print a warning in case the old one is used. Btw use the result of of_property_read_u32() as return code in error case. Signed-off-by: Stefan Wahren Signed-off-by: Dave Stevenson --- drivers/dma/bcm2835-dma.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 9d74fe97452e..528c4593b45a 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -941,12 +941,19 @@ static int bcm2835_dma_probe(struct platform_device *pdev) } /* Request DMA channel mask from device tree */ - if (of_property_read_u32(pdev->dev.of_node, - "brcm,dma-channel-mask", - &chans_available)) { - dev_err(&pdev->dev, "Failed to get channel mask\n"); - rc = -EINVAL; - goto err_no_dma; + rc = of_property_read_u32(pdev->dev.of_node, "dma-channel-mask", + &chans_available); + + if (rc) { + /* Try deprecated property */ + if (of_property_read_u32(pdev->dev.of_node, + "brcm,dma-channel-mask", + &chans_available)) { + dev_err(&pdev->dev, "Failed to get channel mask\n"); + goto err_no_dma; + } + + dev_warn(&pdev->dev, "brcm,dma-channel-mask deprecated - please update DT\n"); } /* get irqs for each channel that we support */