Messages in this thread | | | From | <> | Subject | [PATCH v6 0/3] add support for Mediatek High-Speed DMA controller on MT7622 and MT7623 SoC | Date | Wed, 7 Mar 2018 16:16:25 +0800 |
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From: Sean Wang <sean.wang@mediatek.com>
Changes since v5: - use C99 style comments at the first two lines - remove unused header includes - use directly KBUILD_MODNAME as a driver name - use DMA_SLAVE_BUSWIDTH_4_BYTES to reflect the real bus width - refine comments - refine code style aligning with 80 chars and wrap - use GFP_NOWAIT as the flag for memory allocations for DMA - changing flow for it should be returning 0 instead of -ENOSPC for all successful descriptor issuing either in part or in full - refine ISR with a fail-safe loop, and having a status check at the start - remove a few unused code - refine callback device_terminate_all, which does it should be freeing all descriptors - refine callback device_free_chan_resources, which does it should be freeing all descriptors before freeing physical channel - remove unnecessary callback device_synchronize
Changes since v4: - rebase to 4.16-rc1 - fold back patch 4 and 5 in v4 into the original commit - add the missing header included - fix typo and add more explanation in existing comments - fix the comments with kernel-doc style which uses /** as the begin - begin the multi-line comments with /*
Changes since v3: - enhance dt-binding documents based on Rob's comments - make consistent among all comments - perfer ordering declarations longest to shortest - fix warning reported from kbuild test robot - add patch 4 and 5 to keep Fengguang and Julia's effort
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 | 1056 ++++++++++++++++++++ 7 files changed, 1115 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
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