Marek Szyprowski 3f03396918 media: vb2-dma-contig: add helper for setting dma max seg size ... Add a helper function for device drivers to set DMA's max_seg_size. Setting it to largest possible value lets DMA-mapping API always create contiguous mappings in DMA address space. This is essential for all devices, which use dma-contig videobuf2 memory allocator and shared buffers. Till now, the only case when vb2-dma-contig really 'worked' was a case where userspace provided USERPTR buffer, which was in fact mmaped contiguous buffer from the other v4l2/drm device. Also DMABUF made of contiguous buffer worked only when its exporter did not split it into several chunks in the scatter-list. Any other buffer failed, regardless of the arch/platform used and the presence of the IOMMU of the device bus. This patch provides interface to fix this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>		2016-06-03 11:12:50 +02:00
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Kconfig
Makefile
tuner-core.c
v4l2-async.c
v4l2-clk.c
v4l2-common.c
v4l2-compat-ioctl32.c
v4l2-ctrls.c
v4l2-dev.c
v4l2-device.c
v4l2-dv-timings.c
v4l2-event.c
v4l2-fh.c
v4l2-flash-led-class.c
v4l2-ioctl.c
v4l2-mc.c
v4l2-mem2mem.c
v4l2-of.c
v4l2-subdev.c
v4l2-trace.c
vb2-trace.c
videobuf2-core.c
videobuf2-dma-contig.c	media: vb2-dma-contig: add helper for setting dma max seg size	2016-06-03 11:12:50 +02:00
videobuf2-dma-sg.c
videobuf2-dvb.c
videobuf2-memops.c
videobuf2-v4l2.c
videobuf2-vmalloc.c
videobuf-core.c
videobuf-dma-contig.c
videobuf-dma-sg.c
videobuf-dvb.c
videobuf-vmalloc.c