@@ -259,6 +259,9 @@ specification the ioctl returns an ``EINVAL`` error code.
video topology configuration, including which I/O entity is routed to
the input/output, is configured by userspace via the Media Controller.
See :ref:`media_controller`.
+ * - ``V4L2_CAP_AUDIO_M2M``
+ - 0x40000000
+ - The device supports the audio Memory-To-Memory interface.
* - ``V4L2_CAP_DEVICE_CAPS``
- 0x80000000
- The driver fills the ``device_caps`` field. This capability can
@@ -197,6 +197,7 @@ replace define V4L2_CAP_META_OUTPUT device-capabilities
replace define V4L2_CAP_DEVICE_CAPS device-capabilities
replace define V4L2_CAP_TOUCH device-capabilities
replace define V4L2_CAP_IO_MC device-capabilities
+replace define V4L2_CAP_AUDIO_M2M device-capabilities
# V4L2 pix flags
replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format`
@@ -508,6 +508,7 @@ struct v4l2_capability {
#define V4L2_CAP_TOUCH 0x10000000 /* Is a touch device */
#define V4L2_CAP_IO_MC 0x20000000 /* Is input/output controlled by the media controller */
+#define V4L2_CAP_AUDIO_M2M 0x40000000 /* audio memory to memory */
#define V4L2_CAP_DEVICE_CAPS 0x80000000 /* sets device capabilities field */
V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag. It is used for audio memory to memory case. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> --- Documentation/userspace-api/media/v4l/vidioc-querycap.rst | 3 +++ Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 5 insertions(+)