Please add some documentation on where/how this should be used. It's not a very obvious interface.
- [PATCH v5 0/9] dmaengine: rcar-dmac: add iommu support f... Niklas Söderlund
- [PATCH v5 1/9] iommu: Add MMIO mapping type Niklas Söderlund
- [PATCH v5 2/9] dma-mapping: add {map,unmap}_resourc... Niklas Söderlund
- [PATCH v5 3/9] dma-mapping: add dma_{map,unmap}_res... Niklas Söderlund
- Re: [PATCH v5 3/9] dma-mapping: add dma_{map,un... Christoph Hellwig
- [PATCH v5 8/9] ARM: dts: r8a7790: add iommus to dma... Niklas Söderlund
- [PATCH v5 4/9] arm: dma-mapping: add {map,unmap}_re... Niklas Söderlund
- [PATCH v5 6/9] dmaengine: rcar-dmac: group slave co... Niklas Söderlund
- [PATCH v5 5/9] dmaengine: rcar-dmac: slave address ... Niklas Söderlund
- [PATCH v5 7/9] dmaengine: rcar-dmac: add iommu supp... Niklas Söderlund
- [PATCH v5 9/9] ARM: dts: r8a7791: add iommus to dma... Niklas Söderlund
