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vc_mem: Add the DMA memcpy support from bcm2708_fb #5651

Merged
merged 1 commit into from
Oct 16, 2023
Merged

vc_mem: Add the DMA memcpy support from bcm2708_fb #5651

merged 1 commit into from
Oct 16, 2023

Commits on Oct 16, 2023

  1. vc_mem: Add the DMA memcpy support from bcm2708_fb 

    bcm2708_fb is disabled by the vc4-kms-v3d overlay, which means that the
DMA memcpy support it provides is not available to allow vclog to read
the VC logs from the top 16MB on Pi 2 and Pi 3. Add the code to the
vc_mem driver, which will still be enabled.

It ought to be possible to do a proper DMA_MEM_TO_MEM copy via the
generic DMA customer API, but that can be a later step.

Signed-off-by: Phil Elwell <[email protected]>
    @pelwell
    pelwell committed Oct 16, 2023
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