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[59.124.168.89]) by smtp.gmail.com with ESMTPSA id z3sm4237179pgc.45.2022.01.14.01.17.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Jan 2022 01:17:47 -0800 (PST) From: Zong Li To: robh+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, krzysztof.kozlowski@canonical.com, conor.dooley@microchip.com, geert@linux-m68k.org, bin.meng@windriver.com, green.wan@sifive.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Cc: Zong Li Subject: [PATCH v3 0/3] Determine the number of DMA channels by 'dma-channels' property Date: Fri, 14 Jan 2022 17:17:38 +0800 Message-Id: X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org The PDMA driver currently assumes there are four channels by default, it might cause the error if there is actually less than four channels. Change that by getting number of channel dynamically from device tree. For backwards-compatible, it uses the default value (i.e. 4) when there is no 'dma-channels' information in dts. This patch set contains the dts and dt-bindings change. Changed in v3: - Fix allocating wrong size - Return error if 'dma-channels' is larger than maximum Changed in v2: - Rebase on tag v5.16 - Use 4 as default value of dma-channels Zong Li (3): riscv: dts: Add dma-channels property in dma node dt-bindings: Add dma-channels for pdma device node dmaengine: sf-pdma: Get number of channel by device tree .../bindings/dma/sifive,fu540-c000-pdma.yaml | 7 +++++++ .../boot/dts/microchip/microchip-mpfs.dtsi | 1 + arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 1 + drivers/dma/sf-pdma/Makefile | 2 ++ drivers/dma/sf-pdma/sf-pdma.c | 20 ++++++++++++------- drivers/dma/sf-pdma/sf-pdma.h | 8 ++------ 6 files changed, 26 insertions(+), 13 deletions(-) -- 2.31.1 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5F308C433F5 for ; Fri, 14 Jan 2022 09:18:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=0k7QeIWbagG6CuE79SthAaNs0b2/4m1hBhftdx+s2rs=; b=LngUtSWIiAgrRM OBGYcsbpzC6PZgo3XQay0Dj7v+jAjw34DBDCPa6fTkH8v8RENAlaqLU/0FJcBqoPAXfedA0TiqIJ8 lYwbhnU/72yMvGuh0FJhVASZA7AWMhY7kCBfflMOv6qATf69GAmC84RBiyRu41cTRduAHsfmHjd2A qXmsBepBY717Y+xTCklair7zDf8Cf59GU3WJYJQxcva1f3xf3ks3zOvoHdueKhzxBgdI4llXXtgtV fJua4VuM28dWZH/GjtADdBOf1QCuap6TlrY9kCKSzOksj5te/oa0mKcg78yCJ+R21oBBDU4REhBKF vzQLsKyQD5fIpYj4Q1cw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8IiV-008RUv-Vy; Fri, 14 Jan 2022 09:17:52 +0000 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8IiT-008RUN-Sx for linux-riscv@lists.infradead.org; Fri, 14 Jan 2022 09:17:51 +0000 Received: by mail-pl1-x630.google.com with SMTP id z3so12779651plg.8 for ; Fri, 14 Jan 2022 01:17:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FJ9jWVX1cVZCB+AdFkPwR6feqDBzuwKx9n9aDB+L7eU=; b=I2yvcth0kmZOxW74KiHSV0WxKJxUyNqtsCVuC3+JWwo9CpTjnYKAhYjNx+JMQR2X6O zmb4ao5EvvaOvpoyaFAHNSWRRjyx3SgRX6Q6aQ6OWC/BiiHQBmJkXWjjlXlLF87LtJae vvSEtbNxr4E1hLssV3cz822trWugBc6hG1XiT81y9V/9gw5O99sLMFJ/PQbou4w9hMYm 8caGnt1+98lhATlKi0v8eHzTWn9rY9KfvCCCNA7H4MwFsOMsBV+xvGJb02CL5qpvfiT+ F5v53Ja4zmjWIZRLGGwxmh9oI8lnrhKnxcjtU0evKie/DiVDH69Ik/RzhRkA5/CtV0WW TbXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FJ9jWVX1cVZCB+AdFkPwR6feqDBzuwKx9n9aDB+L7eU=; b=u3Txb0l8zAHFp0aqMGWykxIm+h5bRGRdavyBTzUd7jdAqyF7U4AlpKAnjgTBtF3JXn d5u9n8nPzgFLDUi2y7J1CxIQVvKIU3kmO5/3Lmun32vc9GqRthio60UPC2y2O8mjqa/5 Al9BIPu30F/PzmjXUWKMrpqR42w7iIpC8akLSZsGTP3L+8FLdu4kELcTmPbBjolB1VHr 2lwm0n6bslN0pzzFr4hjABFhOBDQ2yotcHS95s3f1Mg2kCVBsvTz8RV5hgQNYGKXHsnb pWkhpDjSYB8V9w3mb8fSEnJMUi84gE3JuJAIdH4E64LTvY7FEoS8RDvGcW68jVFtSx8j +XSg== X-Gm-Message-State: AOAM533vUxMKaQ1IQU3fl7kSXy6273Yg5tRuRYjygZQ5thojHnHWAK5p G/pam7QR+ElGrDHizH1VYs9q/Q== X-Google-Smtp-Source: ABdhPJx75BSifsQTkjSXcEqinHM6jB1Blts8AJKZqvpt94lFvVTRer5DSG20FM2kQzE3HdQKFYRzWA== X-Received: by 2002:a17:902:c10c:b0:14a:922d:39d5 with SMTP id 12-20020a170902c10c00b0014a922d39d5mr457595pli.66.1642151868162; Fri, 14 Jan 2022 01:17:48 -0800 (PST) Received: from hsinchu16.internal.sifive.com (59-124-168-89.hinet-ip.hinet.net. [59.124.168.89]) by smtp.gmail.com with ESMTPSA id z3sm4237179pgc.45.2022.01.14.01.17.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Jan 2022 01:17:47 -0800 (PST) From: Zong Li To: robh+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, krzysztof.kozlowski@canonical.com, conor.dooley@microchip.com, geert@linux-m68k.org, bin.meng@windriver.com, green.wan@sifive.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Cc: Zong Li Subject: [PATCH v3 0/3] Determine the number of DMA channels by 'dma-channels' property Date: Fri, 14 Jan 2022 17:17:38 +0800 Message-Id: X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220114_011749_991213_97275834 X-CRM114-Status: UNSURE ( 9.12 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The PDMA driver currently assumes there are four channels by default, it might cause the error if there is actually less than four channels. Change that by getting number of channel dynamically from device tree. For backwards-compatible, it uses the default value (i.e. 4) when there is no 'dma-channels' information in dts. This patch set contains the dts and dt-bindings change. Changed in v3: - Fix allocating wrong size - Return error if 'dma-channels' is larger than maximum Changed in v2: - Rebase on tag v5.16 - Use 4 as default value of dma-channels Zong Li (3): riscv: dts: Add dma-channels property in dma node dt-bindings: Add dma-channels for pdma device node dmaengine: sf-pdma: Get number of channel by device tree .../bindings/dma/sifive,fu540-c000-pdma.yaml | 7 +++++++ .../boot/dts/microchip/microchip-mpfs.dtsi | 1 + arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 1 + drivers/dma/sf-pdma/Makefile | 2 ++ drivers/dma/sf-pdma/sf-pdma.c | 20 ++++++++++++------- drivers/dma/sf-pdma/sf-pdma.h | 8 ++------ 6 files changed, 26 insertions(+), 13 deletions(-) -- 2.31.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv