This small series adds support for non-coherent video capture buffers on Rockchip ISP V1. Patch 1 fixes cache management for dmabuf's allocated by dma-contig allocator. Patch 2 allows non-coherent allocations on the rkisp1 capture queue. Some timing measurements are provided in the commit message of patch 2.
Signed-off-by: Mikhail Rudenko mike.rudenko@gmail.com --- Changes in v3: - ignore skip_cache_sync_* flags in vb2_dc_dmabuf_ops_{begin,end}_cpu_access - invalidate/flush kernel mappings as appropriate if they exist - use dma_sync_sgtable_* instead of dma_sync_sg_* - Link to v2: https://lore.kernel.org/r/20250115-b4-rkisp-noncoherent-v2-0-0853e1a24012@gm...
Changes in v2: - Fix vb2_dc_dmabuf_ops_{begin,end}_cpu_access() for non-coherent buffers. - Add cache management timing information to patch 2 commit message. - Link to v1: https://lore.kernel.org/r/20250102-b4-rkisp-noncoherent-v1-1-bba164f7132c@gm...
--- Mikhail Rudenko (2): media: videobuf2: Fix dmabuf cache sync/flush in dma-contig media: rkisp1: Allow non-coherent video capture buffers
.../media/common/videobuf2/videobuf2-dma-contig.c | 22 ++++++++++++++++++++++ .../platform/rockchip/rkisp1/rkisp1-capture.c | 1 + 2 files changed, 23 insertions(+) --- base-commit: c4b7779abc6633677e6edb79e2809f4f61fde157 change-id: 20241231-b4-rkisp-noncoherent-ad6e7c7a68ba
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