linux-kernel - [PATCH v3 0/3] add support for Mediatek High-Speed DMA controller on MT7622 and MT7623 SoC

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Message-ID: <cover.1517454174.git.sean.wang@mediatek.com>
Date:   Thu, 1 Feb 2018 11:45:22 +0800
From:   <sean.wang@...iatek.com>
To:     <vinod.koul@...el.com>, <dan.j.williams@...el.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>
CC:     <dmaengine@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Sean Wang <sean.wang@...iatek.com>
Subject: [PATCH v3 0/3] add support for Mediatek High-Speed DMA controller on MT7622 and MT7623 SoC

From: Sean Wang <sean.wang@...iatek.com>

Changes since v2:
- remove extra tasklets and refactor driver for letting descriptors being processed ASAP.
- add more comments stating the relevant logic
- remove unused macro and variables
- change to use the disclaimer with SPDX identifier
- add mt7622 support
- refine hardware initialization sequence
- add tx_status support for DMA_RESIDUE_GRANULARITY_SEGMENT
- refine remove handler with killing vc's tasklet

Changes since v1:
- fix typo in the commit message.
- delete status shown in the dt-binding example.

This patchset introduces support for MediaTek High-Speed DMA controller
(MTK-HSDMA) Currently, the driver is already tested successfully with
dmatest module on MT7622 and MT7623 SoC. 

MTK-HSDMA on MT7622/23 SoC has a single ring which is dedicated for
doing memory-to-memory transfer through ring-based descriptor management.
Even though there is only a single ring available inside HSDMA, the
driver is being extended to the support for multiple virtual channels
processing simultaneously by means of DMA_VIRTUAL_CHANNELS.

Sean Wang (3):
  dt-bindings: dmaengine: Add MediaTek High-Speed DMA controller
    bindings
  dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622
    and MT7623 SoC
  dmaengine: mediatek: update MAINTAINERS entry with MediaTek DMA driver

 .../devicetree/bindings/dma/mtk-hsdma.txt          |   33 +
 MAINTAINERS                                        |    9 +
 drivers/dma/Kconfig                                |    2 +
 drivers/dma/Makefile                               |    1 +
 drivers/dma/mediatek/Kconfig                       |   13 +
 drivers/dma/mediatek/Makefile                      |    1 +
 drivers/dma/mediatek/mtk-hsdma.c                   | 1045 ++++++++++++++++++++
 7 files changed, 1104 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/mtk-hsdma.txt
 create mode 100644 drivers/dma/mediatek/Kconfig
 create mode 100644 drivers/dma/mediatek/Makefile
 create mode 100644 drivers/dma/mediatek/mtk-hsdma.c

-- 
2.7.4