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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-08 14:08:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-09 10:16:53 -0300 |
| commit | 52839f66edde1ed709390b55a0d3f82593203308 (patch) | |
| tree | a002dc466237e1539b325504490a27f8a0b6f943 /include/media | |
| parent | 88b7eb092efb8197d29d5202d77d1fb919419ec5 (diff) | |
| download | linux-52839f66edde1ed709390b55a0d3f82593203308.tar.bz2 | |
[media] videobuf2-core.h: document enum vb2_memory
This enum was not documented. Document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/videobuf2-core.h | 14 |
1 files changed, 14 insertions, 0 deletions
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, |