The below patch series are to support AxiDMA running on Intel KeemBay SoC.
The base driver is dw-axi-dmac. This driver only support DMA memory copy
transfers. Code refactoring is needed so that additional features can be
supported.
The features added in this patch series are:
- Replacing Linked List with virtual descriptor management.
- Remove unrelated hw desc stuff from dma memory pool.
- Manage dma memory pool alloc/destroy based on channel activity.
- Support dmaengine device_sync() callback.
- Support dmaengine device_config().
- Support dmaengine device_prep_slave_sg().
- Support dmaengine device_prep_dma_cyclic().
- Support of_dma_controller_register().
- Support burst residue granularity.
- Support Intel KeemBay AxiDMA registers.
- Support Intel KeemBay AxiDMA device handshake.
- Support Intel KeemBay AxiDMA BYTE and HALFWORD device operation.
- Add constraint to Max segment size.
This patch series are tested on Intel KeemBay platform.
v2:
- Rebased to v5.10-rc1 kernel.
- Added support for dmaengine device_config().
- Added support for dmaengine device_prep_slave_sg().
- Added support for dmaengine device_prep_dma_cyclic().
- Added support for of_dma_controller_register().
- Added support for burst residue granularity.
- Added support for Intel KeemBay AxiDMA registers.
- Added support for Intel KeemBay AxiDMA device handshake.
- Added support for Intel KeemBay AxiDMA BYTE and HALFWORD device operation.
- Added constraint to Max segment size.
v1:
- Initial version. Patch on top of dw-axi-dma driver. This version improve
the descriptor management by replacing Linked List Item (LLI) with
virtual descriptor management, only allocate hardware LLI memories from
DMA memory pool, manage DMA memory pool alloc/destroy based on channel
activity and to support device_sync callback.
Sia Jee Heng (15):
dt-bindings: dma: Add YAML schemas for dw-axi-dmac
dmaengine: dw-axi-dmac: simplify descriptor management
dmaengine: dw-axi-dmac: move dma_pool_create() to
alloc_chan_resources()
dmaengine: dw-axi-dmac: Add device_synchronize() callback
dmaengine: dw-axi-dmac: Add device_config operation
dmaengine: dw-axi-dmac: Support device_prep_slave_sg
dmaegine: dw-axi-dmac: Support device_prep_dma_cyclic()
dmaengine: dw-axi-dmac: Support of_dma_controller_register()
dmaengine: dw-axi-dmac: Support burst residue granularity
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA support
dt-binding: dma: dw-axi-dmac: Add support for Intel KeemBay AxiDMA
dmaengine: dw-axi-dmac: Add Intel KeemBay DMA register fields
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA handshake
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA BYTE and HALFWORD
registers
dmaengine: dw-axi-dmac: Set constraint to the Max segment size
.../bindings/dma/snps,dw-axi-dmac.txt | 39 -
.../bindings/dma/snps,dw-axi-dmac.yaml | 149 ++++
.../dma/dw-axi-dmac/dw-axi-dmac-platform.c | 696 +++++++++++++++---
drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 33 +-
4 files changed, 783 insertions(+), 134 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.txt
create mode 100644 Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
base-commit: 4525c8781ec0701ce824e8bd379ae1b129e26568
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2.18.0
