[PATCH v1 0/2] dmaengine: Add DW AXI DMAC driver

From: Eugeniy Paltsev
Date: Tue Feb 21 2017 - 15:38:33 EST

This patch series add support for the DW AXI DMAC controller.

DW AXI DMAC is a part of upcoming development board from Synopsys.

In this driver implementation only DMA_MEMCPY and DMA_SG transfers
are supported.

Changes for v1:
* Implement Runtime PM (the driver can operate with or without
Runtime PM support)
* Move submitting new txn to interrupt handler from tasklet
* Free IRQ manually in driver remove function
* Add 64 bit support
* Rid of subsys_initcall
* Use dev_vdbg instead dev_dbg in some places
* Rid of C99 style comments
* Add IP version to DT compatible string

* I left "is_paused" variable untouched. I checked the drivers which
have 'enum dma_status' field in their channel data structures -
there is no much sense to add enum to this driver channel data
structure - it will be used only for determinating is channel
paused or not.
* I left preparation of SG list according to max data width and
max block size in dma_chan_prep_dma_sg function.
* I left axi_chan_is_hw_enable assert untouched because it is
HW per-channel assert. It can't be managed by runtime PM.

Changes for v0:
* Switch to virt-dma API (according to previous RFC)
* Small fixies according to previous RFC
* Add DT bindings

Eugeniy Paltsev (2):
dt-bindings: Document the Synopsys DW AXI DMA bindings
dmaengine: Add DW AXI DMAC driver

.../devicetree/bindings/dma/snps,axi-dw-dmac.txt | 34 +
drivers/dma/Kconfig | 10 +
drivers/dma/Makefile | 1 +
drivers/dma/axi_dma_platform.c | 1041 ++++++++++++++++++++
drivers/dma/axi_dma_platform.h | 118 +++
drivers/dma/axi_dma_platform_reg.h | 189 ++++
6 files changed, 1393 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt
create mode 100644 drivers/dma/axi_dma_platform.c
create mode 100644 drivers/dma/axi_dma_platform.h
create mode 100644 drivers/dma/axi_dma_platform_reg.h