Jianqun Xu
ef34c63346
Currently videobuf2 supports videobuf2-dma-sg, videobuf2-dma-contig and videobuf2-vmalloc. - vb2_dma_sg_memops created by videobuf2-dma-sg driver, allocates memory through 'alloc_pages' and manager them with scatter gather list (sgt). - vb2_dma_contig_memops created by videobuf2-dma-contig driver, allocates memory through dma_alloc_attrs, may result in many kinds of memory, including 'cma_alloc'. - vb2_vmalloc_memops created by videobuf2-vmalloc driver, allocates memory through vmalloc_user. In some case device requires allocate memory through cma_alloc and manager them by sgt, the new driver is named videobuf2-cma-sg. - vb2_cma_sg_memops created by videobuf2-cma-sg driver, allocates memory through 'cma_alloc' and manager them with sgt. Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Change-Id: Ic974dd41aa3dcf9588311ad8ed6c166f3064d6fd Signed-off-by: Cai YiWei <cyw@rock-chips.com>