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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-04-14 02:47:59 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-11-19 22:37:12 +0200
commit1459930de57920b5161fee2662f9604de91b9de5 (patch)
tree346477f64047d58ad4b57fca551bbbf83644fa1f /include
parent9bc6041f58e175d5d75886f2f5585c31049e995a (diff)
include: linux: Add V4L2 subdev internal routing API
The V4L2 subdev internal routing API is under development. Add it manually to the v4l2-subdev.h kernel header for now. The code corresponds to "[PATCH v6 00/24] v4l: subdev internal routing" as ported to the linux-media mailing list. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/media.h1
-rw-r--r--include/linux/v4l2-subdev.h48
2 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/media.h b/include/linux/media.h
index 17432318..41c30ca4 100644
--- a/include/linux/media.h
+++ b/include/linux/media.h
@@ -207,6 +207,7 @@ struct media_entity_desc {
#define MEDIA_PAD_FL_SINK (1 << 0)
#define MEDIA_PAD_FL_SOURCE (1 << 1)
#define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
+#define MEDIA_PAD_FL_MULTIPLEXED (1 << 3)
struct media_pad_desc {
__u32 entity; /* entity ID */
diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index a38454d9..48adcadc 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -178,6 +178,52 @@ struct v4l2_subdev_capability {
/* The v4l2 sub-device video device node is registered in read-only mode. */
#define V4L2_SUBDEV_CAP_RO_SUBDEV 0x00000001
+/*
+ * Is the route active? An active route will start when streaming is enabled
+ * on a video node.
+ */
+#define V4L2_SUBDEV_ROUTE_FL_ACTIVE (1UL << 0)
+
+/*
+ * Is the route immutable, i.e. can it be activated and inactivated?
+ * Set by the driver.
+ */
+#define V4L2_SUBDEV_ROUTE_FL_IMMUTABLE (1UL << 1)
+
+/**
+ * struct v4l2_subdev_route - A route inside a subdev
+ *
+ * @sink_pad: the sink pad index
+ * @sink_stream: the sink stream identifier
+ * @source_pad: the source pad index
+ * @source_stream: the source stream identifier
+ * @flags: route flags V4L2_SUBDEV_ROUTE_FL_*
+ * @reserved: drivers and applications must zero this array
+ */
+struct v4l2_subdev_route {
+ __u32 sink_pad;
+ __u32 sink_stream;
+ __u32 source_pad;
+ __u32 source_stream;
+ __u32 flags;
+ __u32 reserved[5];
+};
+
+/**
+ * struct v4l2_subdev_routing - Subdev routing information
+ *
+ * @which: configuration type (from enum v4l2_subdev_format_whence)
+ * @routes: pointer to the routes array
+ * @num_routes: the total number of routes in the routes array
+ * @reserved: drivers and applications must zero this array
+ */
+struct v4l2_subdev_routing {
+ __u32 which;
+ __u64 routes;
+ __u32 num_routes;
+ __u32 reserved[5];
+};
+
/* Backwards compatibility define --- to be removed */
#define v4l2_subdev_edid v4l2_edid
@@ -193,6 +239,8 @@ struct v4l2_subdev_capability {
#define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
#define VIDIOC_SUBDEV_G_SELECTION _IOWR('V', 61, struct v4l2_subdev_selection)
#define VIDIOC_SUBDEV_S_SELECTION _IOWR('V', 62, struct v4l2_subdev_selection)
+#define VIDIOC_SUBDEV_G_ROUTING _IOWR('V', 38, struct v4l2_subdev_routing)
+#define VIDIOC_SUBDEV_S_ROUTING _IOWR('V', 39, struct v4l2_subdev_routing)
/* The following ioctls are identical to the ioctls in videodev2.h */
#define VIDIOC_SUBDEV_G_STD _IOR('V', 23, v4l2_std_id)
#define VIDIOC_SUBDEV_S_STD _IOW('V', 24, v4l2_std_id)