diff mbox series

[v11,20/36] media: add V4L2_SUBDEV_CAP_MPLEXED

Message ID 20220301161156.1119557-21-tomi.valkeinen@ideasonboard.com
State Superseded
Headers show
Series v4l: routing and streams support | expand

Commit Message

Tomi Valkeinen March 1, 2022, 4:11 p.m. UTC 
Add a subdev capability flag to expose to userspace if a subdev supports
multiplexed streams.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 4 +++-
 include/uapi/linux/v4l2-subdev.h      | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index fda0925afeb3..3ad24093abe9 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -399,7 +399,9 @@  static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 
 		memset(cap->reserved, 0, sizeof(cap->reserved));
 		cap->version = LINUX_VERSION_CODE;
-		cap->capabilities = ro_subdev ? V4L2_SUBDEV_CAP_RO_SUBDEV : 0;
+		cap->capabilities =
+			(ro_subdev ? V4L2_SUBDEV_CAP_RO_SUBDEV : 0) |
+			((sd->flags & V4L2_SUBDEV_FL_MULTIPLEXED) ? V4L2_SUBDEV_CAP_MPLEXED : 0);
 
 		return 0;
 	}
diff --git a/include/uapi/linux/v4l2-subdev.h b/include/uapi/linux/v4l2-subdev.h
index 658106f5b5dc..d91ab6f22fa7 100644
--- a/include/uapi/linux/v4l2-subdev.h
+++ b/include/uapi/linux/v4l2-subdev.h
@@ -188,6 +188,9 @@  struct v4l2_subdev_capability {
 /* The v4l2 sub-device video device node is registered in read-only mode. */
 #define V4L2_SUBDEV_CAP_RO_SUBDEV		0x00000001
 
+/* The v4l2 sub-device supports multiplexed streams. */
+#define V4L2_SUBDEV_CAP_MPLEXED			0x00000002
+
 /* Backwards compatibility define --- to be removed */
 #define v4l2_subdev_edid v4l2_edid