[PATCH v2 0/2] Add DmaSyncer

[Harvey Yang]

Hi folks,

This series of patches follows the discussion with Kieran in patch [1],
which adds a helper function and a helper class to make synchronizing
DMA buffers easier.

The second patch updates debayer_cpu to utilize the new helper class.
The following mtkisp7 pipeline handler will also depend on the helper
class.

I put the function in DmaBufAllocator and the helper class in the same
file for now. Let me know if I should put them elsewhere.

This passes gitlab pipeline:
https://gitlab.freedesktop.org/chenghaoyang/libcamera/-/pipelines/1309296

v2:
- Fixed ioctl return value check when being interrupted.

BR,
Harvey

[1]: [PATCH v4] libcamera: debayer_cpu: Sync DMABUFs


Harvey Yang (2):
  DmaBufAllocator: Add Dma Buffer synchronization function & helper
    class
  debayer_cpu: Replace syncing DMABUFs with DmaSyncer

 .../libcamera/internal/dma_buf_allocator.h    | 33 +++++++
 src/libcamera/dma_buf_allocator.cpp           | 90 +++++++++++++++++++
 src/libcamera/software_isp/debayer_cpu.cpp    | 29 ++----
 3 files changed, 131 insertions(+), 21 deletions(-)

-- 
2.47.0.277.g8800431eea-goog