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Subject: media: subdev: Improve s_stream documentation
Author: Tomi Valkeinen <tomi.valkei...@ideasonboard.com>
Date: Wed Apr 24 18:39:14 2024 +0300
Now that enable/disable_streams operations are available for
single-stream subdevices too, there's no reason to use the old s_stream
operation on new drivers. Extend the documentation reflecting this.
Signed-off-by: Tomi Valkeinen <tomi.valkei...@ideasonboard.com>
Reviewed-by: Umang Jain<umang.j...@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
include/media/v4l2-subdev.h | 9 +++++++++
1 file changed, 9 insertions(+)
---
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 23c970d09870..df66365576dd 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -450,6 +450,15 @@ enum v4l2_subdev_pre_streamon_flags {
* already started or stopped subdev. Also see call_s_stream wrapper in
* v4l2-subdev.c.
*
+ * New drivers should instead implement &v4l2_subdev_pad_ops.enable_streams
+ * and &v4l2_subdev_pad_ops.disable_streams operations, and use
+ * v4l2_subdev_s_stream_helper for the &v4l2_subdev_video_ops.s_stream
+ * operation to support legacy users.
+ *
+ * Drivers should also not call the .s_stream() subdev operation directly,
+ * but use the v4l2_subdev_enable_streams() and
+ * v4l2_subdev_disable_streams() helpers.
+ *
* @g_pixelaspect: callback to return the pixelaspect ratio.
*
* @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev
