Em Sun, 12 Jun 2016 00:20:59 +0200
Philippe De Muyter <[email protected]> escreveu:
> add max_interval and step_interval to struct
> v4l2_subdev_frame_interval_enum.
>
> When filled correctly by the sensor driver, those fields must be
> used as follows by the intermediate level :
>
> struct v4l2_frmivalenum *fival;
> struct v4l2_subdev_frame_interval_enum fie;
>
> if (fie.max_interval.numerator == 0) {
> fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
> fival->discrete = fie.interval;
> } else if (fie.step_interval.numerator == 0) {
> fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
> fival->stepwise.min = fie.interval;
> fival->stepwise.max = fie.max_interval;
> } else {
> fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
> fival->stepwise.min = fie.interval;
> fival->stepwise.max = fie.max_interval;
> fival->stepwise.step = fie.step_interval;
> }
>
> Signed-off-by: Philippe De Muyter <[email protected]>
> ---
> include/uapi/linux/v4l2-subdev.h | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/uapi/linux/v4l2-subdev.h
> b/include/uapi/linux/v4l2-subdev.h
> index dbce2b554..846dd36 100644
> --- a/include/uapi/linux/v4l2-subdev.h
> +++ b/include/uapi/linux/v4l2-subdev.h
> @@ -127,7 +127,9 @@ struct v4l2_subdev_frame_interval_enum {
> __u32 height;
> struct v4l2_fract interval;
> __u32 which;
> - __u32 reserved[8];
> + struct v4l2_fract max_interval;
> + struct v4l2_fract step_interval;
> + __u32 reserved[4];
As this changes the userspace API, you need to also patch the
Documentation/media to reflect such change and explain the meaning
for the new fields.
Please notice that the rst documentation is under the "docs-next"
branch at the media_tree.git. You should either patch against that
or wait for the end for 4.8-rc1, where the documentation will be
merged back on the master branch.
> };
>
> /**
--
Thanks,
Mauro
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