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media: Documentation: Update {enable,disable}_streams documentation

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Document the expected {enable,disable}_streams callback behaviour for
drivers that are stream-unaware i.e. don't specify the
V4L2_SUBDEV_CAP_STREAMS sub-device capability flag. In this specific case,
the mask argument can be ignored.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Sakari Ailus 2024-09-17 15:31:47 +03:00 committed by Mauro Carvalho Chehab
parent 30fe661eb9
commit 646aed96d5
1 changed files with 8 additions and 0 deletions
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8
include/media/v4l2-subdev.h
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@ -834,11 +834,19 @@ struct v4l2_subdev_state {
* v4l2_subdev_init_finalize() at initialization time). Do not call
* directly, use v4l2_subdev_enable_streams() instead.
*
* Drivers that support only a single stream without setting the
* V4L2_SUBDEV_CAP_STREAMS sub-device capability flag can ignore the mask
* argument.
*
* @disable_streams: Disable the streams defined in streams_mask on the given
* source pad. Subdevs that implement this operation must use the active
* state management provided by the subdev core (enabled through a call to
* v4l2_subdev_init_finalize() at initialization time). Do not call
* directly, use v4l2_subdev_disable_streams() instead.
*
* Drivers that support only a single stream without setting the
* V4L2_SUBDEV_CAP_STREAMS sub-device capability flag can ignore the mask
* argument.
*/
struct v4l2_subdev_pad_ops {
int (*enum_mbus_code)(struct v4l2_subdev *sd,