| Message ID | 20200701093522.8521-2-yunfei.dong@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | This patchset add read-only(Ro) request for capture queue | expand |
On 01/07/2020 11:35, Yunfei Dong wrote: > This patch adds support for the V4L2_BUF_CAP_SUPPORTS_RO_REQUESTS > flag. This flag is used for Read-only(Ro) Request. > > Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> > --- > Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst > index b6d52083707b..7c7451773b8e 100644 > --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst > +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst > @@ -126,6 +126,7 @@ aborting or finishing any DMA in progress, an implicit > .. _V4L2-BUF-CAP-SUPPORTS-REQUESTS: > .. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS: > .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF: > +.. _V4L2-BUF-CAP-SUPPORTS-RO-REQUESTS: > > .. cssclass:: longtable > > @@ -156,6 +157,9 @@ aborting or finishing any DMA in progress, an implicit > - Only valid for stateless decoders. If set, then userspace can set the > ``V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF`` flag to hold off on returning the > capture buffer until the OUTPUT timestamp changes. > + * - ``V4L2_BUF_CAP_SUPPORTS_RO_REQUESTS`` > + - 0x00000040 > + - This buffer type supports :ref:`requests <media-request-api>`. This is wrong, it supports *read-only* requests. Also, Documentation/userspace-api/media/mediactl/request-api.rst should mention read-only requests: I think a new section "Read-Only Requests" explaining the purpose and use of such requests would be best. It can be inserted just before the "Example for a Codec Device" at the end. Regards, Hans > > Return Value > ============ >
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst index b6d52083707b..7c7451773b8e 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst @@ -126,6 +126,7 @@ aborting or finishing any DMA in progress, an implicit .. _V4L2-BUF-CAP-SUPPORTS-REQUESTS: .. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS: .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF: +.. _V4L2-BUF-CAP-SUPPORTS-RO-REQUESTS: .. cssclass:: longtable @@ -156,6 +157,9 @@ aborting or finishing any DMA in progress, an implicit - Only valid for stateless decoders. If set, then userspace can set the ``V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF`` flag to hold off on returning the capture buffer until the OUTPUT timestamp changes. + * - ``V4L2_BUF_CAP_SUPPORTS_RO_REQUESTS`` + - 0x00000040 + - This buffer type supports :ref:`requests <media-request-api>`. Return Value ============
This patch adds support for the V4L2_BUF_CAP_SUPPORTS_RO_REQUESTS flag. This flag is used for Read-only(Ro) Request. Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> --- Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 4 ++++ 1 file changed, 4 insertions(+)