From mboxrd@z Thu Jan 1 00:00:00 1970 From: Long Cheng Subject: [PATCH v2 0/4] add uart DMA function Date: Wed, 5 Dec 2018 16:42:56 +0800 Message-ID: <1543999380-7946-1-git-send-email-long.cheng@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Vinod Koul , Rob Herring , Mark Rutland Cc: Matthias Brugger , Dan Williams , Greg Kroah-Hartman , Jiri Slaby , Sean Wang , Long Cheng , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, srv_heupstream@mediatek.com, Yingjoe Chen , YT Shen List-Id: devicetree@vger.kernel.org In Mediatek SOCs, the uart can support DMA function. Base on DMA engine formwork, we add the DMA code to support uart. And put the code under drivers/dma. This series contains document bindings, Kconfig to control the function enable or not, device tree including interrupt and dma device node, the code of UART DM Changes compared to v1: -mian revised file, 8250_mtk_dma.c --parameters renamed for standard --remove atomic operation Long Cheng (4): dt-bindings: dma: uart: add uart dma bindings dmaengine: mtk_uart_dma: add Mediatek uart DMA support serial: 8250-mtk: add uart DMA support arm: dts: mt2701: add uart APDMA to device tree .../devicetree/bindings/dma/8250_mtk_dma.txt | 33 + arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 ++ drivers/dma/mediatek/8250_mtk_dma.c | 894 ++++++++++++++++++++ drivers/dma/mediatek/Kconfig | 11 + drivers/dma/mediatek/Makefile | 1 + drivers/tty/serial/8250/8250_mtk.c | 210 ++++- 6 files changed, 1198 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt create mode 100644 drivers/dma/mediatek/8250_mtk_dma.c