linux-kernel - Re: [PATCH v3 3/5] media: vivid: Add an area control

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Date:   Mon, 4 Nov 2019 11:11:48 +0100
From:   Ricardo Ribalda Delgado <ribalda@...nel.org>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     linux-media <linux-media@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/5] media: vivid: Add an area control

Hi hans

On Mon, Nov 4, 2019 at 10:44 AM Hans Verkuil <hverkuil-cisco@...all.nl> wrote:
>
> On 11/1/19 12:23 PM, Ricardo Ribalda Delgado wrote:
> > This control represents a generic read/write area.
> >
> > Suggested-by: Hans Verkuil <hverkuil-cisco@...all.nl>
> > Signed-off-by: Ricardo Ribalda Delgado <ribalda@...nel.org>
> > ---
> >  drivers/media/platform/vivid/vivid-ctrls.c | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> >
> > diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c
> > index b250fc3764e2..fd35863798a7 100644
> > --- a/drivers/media/platform/vivid/vivid-ctrls.c
> > +++ b/drivers/media/platform/vivid/vivid-ctrls.c
> > @@ -32,6 +32,7 @@
> >  #define VIVID_CID_U32_ARRAY          (VIVID_CID_CUSTOM_BASE + 8)
> >  #define VIVID_CID_U16_MATRIX         (VIVID_CID_CUSTOM_BASE + 9)
> >  #define VIVID_CID_U8_4D_ARRAY                (VIVID_CID_CUSTOM_BASE + 10)
> > +#define VIVID_CID_AREA                       (VIVID_CID_CUSTOM_BASE + 11)
> >
> >  #define VIVID_CID_VIVID_BASE         (0x00f00000 | 0xf000)
> >  #define VIVID_CID_VIVID_CLASS                (0x00f00000 | 1)
> > @@ -266,6 +267,18 @@ static const struct v4l2_ctrl_config vivid_ctrl_disconnect = {
> >       .type = V4L2_CTRL_TYPE_BUTTON,
> >  };
> >
> > +static const struct v4l2_area area = {
> > +     .width = 0xcafe,
> > +     .height = 0xb1b1d,
>
> I don't think there is any need for these weird values. Just set this to
> e.g. 1000x2000. Just as long as width and height are different.
>
> Regards,

Sure. I will change that.

I though anyone liked vivid cafe ;P


>
>         Hans
>
> > +};
> > +
> > +static const struct v4l2_ctrl_config vivid_ctrl_area = {
> > +     .ops = &vivid_user_gen_ctrl_ops,
> > +     .id = VIVID_CID_AREA,
> > +     .name = "Area",
> > +     .type = V4L2_CTRL_TYPE_AREA,
> > +     .p_def.p_const = &area,
> > +};
> >
> >  /* Framebuffer Controls */
> >
> > @@ -1574,6 +1587,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap,
> >       dev->string = v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_string, NULL);
> >       dev->bitmask = v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_bitmask, NULL);
> >       dev->int_menu = v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_int_menu, NULL);
> > +     v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_area, NULL);
> >       v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_u32_array, NULL);
> >       v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_u16_matrix, NULL);
> >       v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_u8_4d_array, NULL);
> >
>