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Subject: media: subdev: add v4l2_subdev_get_fmt() helper function Author: Tomi Valkeinen <[email protected]> Date: Tue Apr 12 10:42:48 2022 +0100 Add v4l2_subdev_get_fmt() helper function which implements v4l2_subdev_pad_ops.get_fmt using active state. Subdev drivers that support active state and do not need to do anything special in their get_fmt op can use this helper directly for v4l2_subdev_pad_ops.get_fmt. Signed-off-by: Tomi Valkeinen <[email protected]> Reviewed-by: Hans Verkuil <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/v4l2-core/v4l2-subdev.c | 22 ++++++++++++++++++++++ include/media/v4l2-subdev.h | 21 +++++++++++++++++++++ 2 files changed, 43 insertions(+) --- diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index afe916366dfe..3da200bb23dd 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1041,6 +1041,28 @@ void v4l2_subdev_cleanup(struct v4l2_subdev *sd) } EXPORT_SYMBOL_GPL(v4l2_subdev_cleanup); +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) + +int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *fmt; + + if (format->pad >= sd->entity.num_pads) + return -EINVAL; + + fmt = v4l2_subdev_get_pad_format(sd, state, format->pad); + if (!fmt) + return -EINVAL; + + format->format = *fmt; + + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_subdev_get_fmt); + +#endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ + #endif /* CONFIG_MEDIA_CONTROLLER */ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index f967c27e41c3..33a7201edb61 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1303,6 +1303,27 @@ v4l2_subdev_lock_and_get_active_state(struct v4l2_subdev *sd) return sd->active_state; } +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) + +/** + * v4l2_subdev_get_fmt() - Fill format based on state + * @sd: subdevice + * @state: subdevice state + * @format: pointer to &struct v4l2_subdev_format + * + * Fill @format->format field based on the information in the @format struct. + * + * This function can be used by the subdev drivers which support active state to + * implement v4l2_subdev_pad_ops.get_fmt if the subdev driver does not need to + * do anything special in their get_fmt op. + * + * Returns 0 on success, error value otherwise. + */ +int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, + struct v4l2_subdev_format *format); + +#endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ + #endif /* CONFIG_MEDIA_CONTROLLER */ /** _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
