@@ -44,13 +44,15 @@ enum v4l2_subdev_format_whence {
* @which: format type (from enum v4l2_subdev_format_whence)
* @pad: pad number, as reported by the media API
* @format: media bus format (format code and frame size)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_format {
__u32 which;
__u32 pad;
struct v4l2_mbus_framefmt format;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
@@ -58,13 +60,15 @@ struct v4l2_subdev_format {
* @which: format type (from enum v4l2_subdev_format_whence)
* @pad: pad number, as reported by the media API
* @rect: pad crop rectangle boundaries
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_crop {
__u32 which;
__u32 pad;
struct v4l2_rect rect;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
#define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE 0x00000001
@@ -80,6 +84,7 @@ struct v4l2_subdev_crop {
* @code: format code (MEDIA_BUS_FMT_ definitions)
* @which: format type (from enum v4l2_subdev_format_whence)
* @flags: flags set by the driver, (V4L2_SUBDEV_MBUS_CODE_*)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_mbus_code_enum {
@@ -88,7 +93,8 @@ struct v4l2_subdev_mbus_code_enum {
__u32 code;
__u32 which;
__u32 flags;
- __u32 reserved[7];
+ __u32 stream;
+ __u32 reserved[6];
};
/**
@@ -101,6 +107,7 @@ struct v4l2_subdev_mbus_code_enum {
* @min_height: minimum frame height, in pixels
* @max_height: maximum frame height, in pixels
* @which: format type (from enum v4l2_subdev_format_whence)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_size_enum {
@@ -112,19 +119,22 @@ struct v4l2_subdev_frame_size_enum {
__u32 min_height;
__u32 max_height;
__u32 which;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
* struct v4l2_subdev_frame_interval - Pad-level frame rate
* @pad: pad number, as reported by the media API
* @interval: frame interval in seconds
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_interval {
__u32 pad;
struct v4l2_fract interval;
- __u32 reserved[9];
+ __u32 stream;
+ __u32 reserved[8];
};
/**
@@ -136,6 +146,7 @@ struct v4l2_subdev_frame_interval {
* @height: frame height in pixels
* @interval: frame interval in seconds
* @which: format type (from enum v4l2_subdev_format_whence)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_interval_enum {
@@ -146,7 +157,8 @@ struct v4l2_subdev_frame_interval_enum {
__u32 height;
struct v4l2_fract interval;
__u32 which;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
@@ -158,6 +170,7 @@ struct v4l2_subdev_frame_interval_enum {
* defined in v4l2-common.h; V4L2_SEL_TGT_* .
* @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
* @r: coordinates of the selection window
+ * @stream: stream number, defined in subdev routing
* @reserved: for future use, set to zero for now
*
* Hardware may use multiple helper windows to process a video stream.
@@ -170,7 +183,8 @@ struct v4l2_subdev_selection {
__u32 target;
__u32 flags;
struct v4l2_rect r;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
@@ -188,6 +202,64 @@ 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
+
+/*
+ * Is the route active? An active route will start when streaming is enabled
+ * on a video node.
+ */
+#define V4L2_SUBDEV_ROUTE_FL_ACTIVE _BITUL(0)
+
+/*
+ * Is the route immutable, i.e. can it be activated and inactivated?
+ * Set by the driver.
+ */
+#define V4L2_SUBDEV_ROUTE_FL_IMMUTABLE _BITUL(1)
+
+/*
+ * Is the route a source endpoint? A source endpoint route refers to a stream
+ * generated internally by the subdevice (usually a sensor), and thus there
+ * is no sink-side endpoint for the route. The sink_pad and sink_stream
+ * fields are unused.
+ * Set by the driver.
+ */
+#define V4L2_SUBDEV_ROUTE_FL_SOURCE _BITUL(2)
+
+/**
+ * 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)
+ * @num_routes: the total number of routes in the routes array
+ * @routes: pointer to the routes array
+ * @reserved: drivers and applications must zero this array
+ */
+struct v4l2_subdev_routing {
+ __u32 which;
+ __u32 num_routes;
+ __u64 routes;
+ __u32 reserved[6];
+};
+
/* Backwards compatibility define --- to be removed */
#define v4l2_subdev_edid v4l2_edid
@@ -203,6 +275,8 @@ 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)
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 the "[PATCH v11 00/36] v4l: routing and streams support" series as posted to the linux-media mailing list. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- include/linux/v4l2-subdev.h | 88 ++++++++++++++++++++++++++++++++++--- 1 file changed, 81 insertions(+), 7 deletions(-)