[PATCH 0/2] [media] DMA direction support in vb2_queue

From: Thierry Escande
Date: Wed Oct 19 2016 - 10:13:11 EST


This series adds a dma_dir field to the vb2_queue structure in order to
store the DMA direction once for all in vb2_queue_init();

It also adds a new capture_dma_bidirectional flag to the vb2_queue
structure allowing the hardware to read from the CAPTURE buffer. This
flag is ignored for OUTPUT queues. This is used on ChromeOS by the
rockchip-vpu driver.

Changes since v1:
- Renamed use_dma_bidirectional field as capture_dma_bidirectional
- Added a VB2_DMA_DIR() macro

Pawel Osciak (2):
[media] vb2: Store dma_dir in vb2_queue
[media] vb2: Add support for capture_dma_bidirectional queue flag

drivers/media/v4l2-core/videobuf2-core.c | 12 +++---------
drivers/media/v4l2-core/videobuf2-v4l2.c | 6 ++++++
include/media/videobuf2-core.h | 6 ++++++
3 files changed, 15 insertions(+), 9 deletions(-)