From: Mauro Carvalho Chehab Date: Thu, 8 Sep 2016 17:08:00 +0000 (-0300) Subject: [media] videobuf2-core.h: document enum vb2_memory X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=52839f66edde1ed709390b55a0d3f82593203308;p=openwrt%2Fstaging%2Fblogic.git [media] videobuf2-core.h: document enum vb2_memory This enum was not documented. Document it. Signed-off-by: Mauro Carvalho Chehab --- diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 68f93dacb38f..65eeca83687a 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -20,6 +20,20 @@ #define VB2_MAX_FRAME (32) #define VB2_MAX_PLANES (8) +/** + * enum vb2_memory - type of memory model used to make the buffers visible + * on userspace. + * + * @VB2_MEMORY_UNKNOWN: Buffer status is unknown or it is not used yet on + * userspace. + * @VB2_MEMORY_MMAP: The buffers are allocated by the Kernel and it is + * memory mapped via mmap() ioctl. This model is + * also used when the user is using the buffers via + * read() or write() system calls. + * @VB2_MEMORY_USERPTR: The buffers was allocated in userspace and it is + * memory mapped via mmap() ioctl. + * @VB2_MEMORY_DMABUF: The buffers are passed to userspace via DMA buffer. + */ enum vb2_memory { VB2_MEMORY_UNKNOWN = 0, VB2_MEMORY_MMAP = 1,