From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH v2] add support for Mediatek Command-Queue DMA controller on MT6765 SoC Date: Wed, 17 Oct 2018 17:36:57 +0800 Message-ID: <1539769019-32107-1-git-send-email-shun-chih.yu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Sean Wang , Vinod Koul , Rob Herring , Matthias Brugger , Dan Williams Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, srv_wsdupstream@mediatek.com List-Id: devicetree@vger.kernel.org Changes since v1: - remove unused macros, typos - leverage ASYNC_TX_ENABLE_CHANNEL_SWITCH to maintain DMA descriptor list This patchset introduces support for MediaTek Command-Queue DMA controller. MediaTek Command-Queue DMA controller (CQDMA) on MT6765 SoC is dedicated to memory-to-memory transfer through queue-based descriptor management. There are only 3 physical channels inside CQDMA, while the driver is extended to support 32 virtual channels for multiple dma users to issue dma requests onto the CQDMA simultaneously. Shun-Chih Yu (2): dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings dmaengine: mediatek: Add MediaTek Command-Queue DMA controller for MT6765 SoC .../devicetree/bindings/dma/mtk-cqdma.txt | 31 + drivers/dma/mediatek/Kconfig | 13 + drivers/dma/mediatek/Makefile | 1 + drivers/dma/mediatek/mtk-cqdma.c | 943 ++++++++++++++++++++ 4 files changed, 988 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/mtk-cqdma.txt create mode 100644 drivers/dma/mediatek/mtk-cqdma.c