Commit d138091f authored Dec 05, 2018 by Luca Ceresoli Committed by Mauro Carvalho Chehab Dec 07, 2018

media: v4l2-subdev: document controls need _FL_HAS_DEVNODE

Control events can be subscribed and received by the user. Therefore
drivers that support controls must expose the
V4L2_SUBDEV_FL_HAS_EVENTS flag.

[As discussed in https://lkml.org/lkml/2018/11/27/637

]

Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

parent be7e3c36

include/media/v4l2-subdev.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -776,7 +776,11 @@ struct v4l2_subdev_internal_ops {
		#define V4L2_SUBDEV_FL_IS_SPI (1U << 1)
		/* Set this flag if this subdev needs a device node. */
		#define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2)
		/* Set this flag if this subdev generates events. */
		/*
		* Set this flag if this subdev generates events.
		* Note controls can send events, thus drivers exposing controls
		* should set this flag.
		*/
		#define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3)

		struct regulator_bulk_data;

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