staging: mmal-vchiq: Use vc-sm-cma to support zero copy
With the vc-sm-cma driver we can support zero copy of buffers between
the kernel and VPU. Add this support to mmal-vchiq.
Signed-off-by:
Dave Stevenson <dave.stevenson@raspberrypi.com>
vc-sm-cma: fixed kbuild problem
error logs:
drivers/staging/vc04_services/vc-sm-cma/Kconfig:1:error: recursive dependency detected!
drivers/staging/vc04_services/vc-sm-cma/Kconfig:1: symbol BCM_VC_SM_CMA is selected by BCM2835_VCHIQ_MMAL
drivers/staging/vc04_services/vchiq-mmal/Kconfig:1: symbol BCM2835_VCHIQ_MMAL depends on BCM2835_VCHIQ
drivers/staging/vc04_services/Kconfig:14: symbol BCM2835_VCHIQ is selected by BCM_VC_SM_CMA
For a resolution refer to Documentation/kbuild/kconfig-language.rst
subsection "Kconfig recursive dependency limitations"
Tested-by: make ARCH=arm64 bcm2711_defconfig
Test platform: fedora 33
Branch: rpi-5.10.y
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