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d4f97711b3
The Allwinner SoCs have a number of high-bandwidth devices connected to a memory bus with a different RAM mapping than the CPU. This was addressed before through drivers setting the DMA offsets directly, and subsequently changed to calls to dma_direct_set_offset. However that wasn't really meant to be exported to modules (and thus drivers). The duplicated code also led to small inconsistencies across drivers in how we dealt with DT backward compatibility. Move all that DMA setup code into a platform bus notifier to share that code and remove the export on dma_direct_set_offset. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCX7TkmwAKCRDj7w1vZxhR xXhXAP4mzQvdsV0jN0LQARpAXDKNq/mSy2qGTRHf+2+MFd3XWQD+JwzMlrnSokf7 Y8nH0YTaXJyu7iQohlM0kVQoKyo5mAw= =4KSg -----END PGP SIGNATURE----- Merge tag 'sunxi-rework-mbus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mripard/linux into arm/drivers Allwinner MBUS and DMA-ops rework The Allwinner SoCs have a number of high-bandwidth devices connected to a memory bus with a different RAM mapping than the CPU. This was addressed before through drivers setting the DMA offsets directly, and subsequently changed to calls to dma_direct_set_offset. However that wasn't really meant to be exported to modules (and thus drivers). The duplicated code also led to small inconsistencies across drivers in how we dealt with DT backward compatibility. Move all that DMA setup code into a platform bus notifier to share that code and remove the export on dma_direct_set_offset. * tag 'sunxi-rework-mbus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mripard/linux: dma-mapping: remove the dma_direct_set_offset export media: sun8i-di: Remove the call to of_dma_configure media: cedrus: Remove the MBUS quirks media: sun6i: Remove the MBUS quirks media: sun4i: Remove the MBUS quirks drm/sun4i: backend: Remove the MBUS quirks soc: sunxi: Deal with the MBUS DMA offsets in a central place drm/sun4i: backend: Fix probe failure with multiple backends Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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