From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Extend the topology struct with a properties array.
Add a new media_v2_prop structure to store property information.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
include/uapi/linux/media.h | 56 ++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index e5d0c5c611b5..12982327381e 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -342,6 +342,58 @@ struct media_v2_link {
__u32 reserved[6];
} __attribute__ ((packed));
+#define MEDIA_PROP_TYPE_GROUP 1
+#define MEDIA_PROP_TYPE_U64 2
+#define MEDIA_PROP_TYPE_S64 3
+#define MEDIA_PROP_TYPE_STRING 4
+
+#define MEDIA_OWNER_TYPE_ENTITY 0
+#define MEDIA_OWNER_TYPE_PAD 1
+#define MEDIA_OWNER_TYPE_LINK 2
+#define MEDIA_OWNER_TYPE_INTF 3
+#define MEDIA_OWNER_TYPE_PROP 4
+
+/**
+ * struct media_v2_prop - A media property
+ *
+ * @id: The unique non-zero ID of this property
+ * @type: Property type
+ * @owner_id: The ID of the object this property belongs to
+ * @owner_type: The type of the object this property belongs to
+ * @flags: Property flags
+ * @name: Property name
+ * @payload_size: Property payload size, 0 for U64/S64
+ * @payload_offset: Property payload starts at this offset from &prop.id.
+ * This is 0 for U64/S64.
+ * @reserved: Property reserved field, will be zeroed.
+ */
+struct media_v2_prop {
+ __u32 id;
+ __u32 type;
+ __u32 owner_id;
+ __u32 owner_type;
+ __u32 flags;
+ char name[32];
+ __u32 payload_size;
+ __u32 payload_offset;
+ __u32 reserved[18];
+} __attribute__ ((packed));
+
+static inline const char *media_prop2string(const struct media_v2_prop *prop)
+{
+ return (const char *)prop + prop->payload_offset;
+}
+
+static inline __u64 media_prop2u64(const struct media_v2_prop *prop)
+{
+ return *(const __u64 *)((const char *)prop + prop->payload_offset);
+}
+
+static inline __s64 media_prop2s64(const struct media_v2_prop *prop)
+{
+ return *(const __s64 *)((const char *)prop + prop->payload_offset);
+}
+
struct media_v2_topology {
__u64 topology_version;
@@ -360,6 +412,10 @@ struct media_v2_topology {
__u32 num_links;
__u32 reserved4;
__u64 ptr_links;
+
+ __u32 num_props;
+ __u32 props_payload_size;
+ __u64 ptr_props;
} __attribute__ ((packed));
/* ioctls */
--
2.19.2
