- TODO for slave dma
- 1. Move remaining drivers to use new slave interface
- 2. Remove old slave pointer machansim
- 3. Make issue_pending to start the transaction in below drivers
- - mpc512x_dma
- - imx-dma
- - imx-sdma
- - mxs-dma.c
- - dw_dmac
- - intel_mid_dma
- - ste_dma40
- 4. Check other subsystems for dma drivers and merge/move to dmaengine
- 5. Remove dma_slave_config's dma direction.
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