media: v4l2-subdev: convert frame description to enum

As kernel-doc doesn't support documenting #define values,
and using enum makes easier to identify where the values
are used, convert V4L2_MBUS_FRAME_DESC_FL_* to enum, and
use BIT() macro.

While here, fix the description at v4l2_mbus_frame_desc_entry,
in order to match what's described for
V4L2_MBUS_FRAME_DESC_FL_LEN_MAX.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 3b80e8537198b04b3c49038745eb12ccc55643fb..71b8ff4b2e0ecd1e99d77d3e5c2c8e09f14667d3 100644 (file)
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -313,25 +313,32 @@ struct v4l2_subdev_audio_ops {
        int (*s_stream)(struct v4l2_subdev *sd, int enable);
 };
 
-/* Indicates the @length field specifies maximum data length. */
-#define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX                (1U << 0)
-/*
- * Indicates that the format does not have line offsets, i.e. the
- * receiver should use 1D DMA.
+/**
+ * enum v4l2_mbus_frame_desc_entry - media bus frame description flags
+ *
+ * @V4L2_MBUS_FRAME_DESC_FL_LEN_MAX:
+ *     Indicates that &struct v4l2_mbus_frame_desc_entry->length field
+ *     specifies maximum data length.
+ * @V4L2_MBUS_FRAME_DESC_FL_BLOB:
+ *     Indicates that the format does not have line offsets, i.e.
+ *     the receiver should use 1D DMA.
  */
-#define V4L2_MBUS_FRAME_DESC_FL_BLOB           (1U << 1)
+enum v4l2_mbus_frame_desc_flags {
+       V4L2_MBUS_FRAME_DESC_FL_LEN_MAX = BIT(0),
+       V4L2_MBUS_FRAME_DESC_FL_BLOB    = BIT(1),
+};
 
 /**
  * struct v4l2_mbus_frame_desc_entry - media bus frame description structure
  *
- * @flags: bitmask flags: %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX and
- *                       %V4L2_MBUS_FRAME_DESC_FL_BLOB.
- * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
- * @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
- *         is set
+ * @flags:     bitmask flags, as defined by &enum v4l2_mbus_frame_desc_flags.
+ * @pixelcode: media bus pixel code, valid if @flags
+ *             %FRAME_DESC_FL_BLOB is not set.
+ * @length:    number of octets per frame, valid if @flags
+ *             %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX is set.
  */
 struct v4l2_mbus_frame_desc_entry {
-       u16 flags;
+       enum v4l2_mbus_frame_desc_flags flags;
        u32 pixelcode;
        u32 length;
 };