Hi Hans,
On Sunday 24 May 2015 10:00:44 Hans Verkuil wrote:
> Hi Laurent,
>
> Looks good, but I have one question. See below.
>
> On 05/23/2015 08:24 PM, Laurent Pinchart wrote:
> > Add a new subdev operation to initialize a subdev pad config array, and
> > a helper function to allocate and initialize the array. This can be used
> > by bridge drivers to implement try format based on subdev pad
> > operations.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinch...@linaro.org>
> > Acked-by: Vaibhav Hiremath <vaibhav.hirem...@linaro.org>
> > ---
> >
> > drivers/media/v4l2-core/v4l2-subdev.c | 19 ++++++++++++++++++-
> > include/media/v4l2-subdev.h | 3 +++
> > 2 files changed, 21 insertions(+), 1 deletion(-)
[snip]
> > diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
> > index 8f5da73dacff..7860d67574f5 100644
> > --- a/include/media/v4l2-subdev.h
> > +++ b/include/media/v4l2-subdev.h
> > @@ -483,6 +483,8 @@ struct v4l2_subdev_pad_config {
> > * may be adjusted by the subdev driver to device
> > capabilities. */
> >
> > struct v4l2_subdev_pad_ops {
> > + void (*init_cfg)(struct v4l2_subdev *sd,
> > + struct v4l2_subdev_pad_config *cfg);
> > int (*enum_mbus_code)(struct v4l2_subdev *sd,
> > struct v4l2_subdev_pad_config *cfg,
> > struct v4l2_subdev_mbus_code_enum *code);
> > @@ -675,6 +677,7 @@ int v4l2_subdev_link_validate_default(struct
> > v4l2_subdev *sd,
> > struct v4l2_subdev_format *source_fmt,
> > struct v4l2_subdev_format *sink_fmt);
> > int v4l2_subdev_link_validate(struct media_link *link);
> > +struct v4l2_subdev_pad_config *v4l2_subdev_alloc_pad_config(struct
> > v4l2_subdev *sd);
>
> Would it make sense to add a simple static inline
> v4l2_subdev_free_pad_config here? All it does is a kfree, but still it
> makes it symmetrical and if we ever need to do more than a kfree, then we
> are able to do so.
Yes it makes sense. I've sent a v2.
> At the very least this header needs a comment if we don't add a
> free_pad_config that the caller needs to kfree the pointer.
>
> > #endif /* CONFIG_MEDIA_CONTROLLER */
> > void v4l2_subdev_init(struct v4l2_subdev *sd,
> > const struct v4l2_subdev_ops *ops);
--
Regards,
Laurent Pinchart
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