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libcamera: software_isp: Make output DMA sync contingent

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The DMA sync output buffer from the GPU need only have its cache
invalidated if the CPU is going to modify the buffer. Right now this is
not required for gpuisp so only act on the output buffer if it is
non-null.

Suggested-by: Robert Mader <robert.mader@collabora.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Bryan O'Donoghue
2025-12-11 23:22:38 +00:00
committed by Kieran Bingham
parent 6b224d91a9
commit c9f3e09634
1 changed files with 4 additions and 2 deletions
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6
src/libcamera/software_isp/debayer.cpp
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@@ -373,8 +373,10 @@ void Debayer::dmaSyncBegin(std::vector<DmaSyncer> &dmaSyncers, FrameBuffer *inpu
for (const FrameBuffer::Plane &plane : input->planes())
dmaSyncers.emplace_back(plane.fd, DmaSyncer::SyncType::Read);
for (const FrameBuffer::Plane &plane : output->planes())
dmaSyncers.emplace_back(plane.fd, DmaSyncer::SyncType::Write);
if (output) {
for (const FrameBuffer::Plane &plane : output->planes())
dmaSyncers.emplace_back(plane.fd, DmaSyncer::SyncType::Write);
}
}
} /* namespace libcamera */