linux-kernel - Re: [PATCH] media: rkisp1: Implement ENUM

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Date:   Thu, 21 Jul 2022 09:39:53 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Paul Elder <paul.elder@...asonboard.com>
Cc:     linux-media@...r.kernel.org, Dafna Hirschfeld <dafna@...tmail.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: rkisp1: Implement ENUM_FRAMESIZES

Hi Paul,

Thank you for the patch.

On Thu, Jul 21, 2022 at 02:22:31AM +0900, Paul Elder wrote:
> Implement VIDIOC_ENUM_FRAMESIZES for the rkisp1 capture devices.
> 
> Signed-off-by: Paul Elder <paul.elder@...asonboard.com>
> ---
>  .../platform/rockchip/rkisp1/rkisp1-capture.c | 26 +++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
> index c494afbc21b4..74106a01ded7 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
> @@ -1245,6 +1245,31 @@ static int rkisp1_enum_fmt_vid_cap_mplane(struct file *file, void *priv,
>  	return -EINVAL;
>  }
>  
> +static int rkisp1_enum_framesizes(struct file *file, void *fh,
> +				  struct v4l2_frmsizeenum *fsize)
> +{
> +	struct rkisp1_capture *cap = video_drvdata(file);
> +	const unsigned int max_widths[] = { RKISP1_RSZ_MP_SRC_MAX_WIDTH,
> +					    RKISP1_RSZ_SP_SRC_MAX_WIDTH };
> +	const unsigned int max_heights[] = { RKISP1_RSZ_MP_SRC_MAX_HEIGHT,
> +					     RKISP1_RSZ_SP_SRC_MAX_HEIGHT};

You can make these static const.

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> +
> +	if (fsize->index != 0)
> +		return -EINVAL;
> +
> +	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
> +
> +	fsize->stepwise.min_width = RKISP1_RSZ_SRC_MIN_WIDTH;
> +	fsize->stepwise.max_width = max_widths[cap->id];
> +	fsize->stepwise.step_width = 2;
> +
> +	fsize->stepwise.min_height = RKISP1_RSZ_SRC_MIN_HEIGHT;
> +	fsize->stepwise.max_height = max_heights[cap->id];
> +	fsize->stepwise.step_height = 2;
> +
> +	return 0;
> +}
> +
>  static int rkisp1_s_fmt_vid_cap_mplane(struct file *file,
>  				       void *priv, struct v4l2_format *f)
>  {
> @@ -1294,6 +1319,7 @@ static const struct v4l2_ioctl_ops rkisp1_v4l2_ioctl_ops = {
>  	.vidioc_s_fmt_vid_cap_mplane = rkisp1_s_fmt_vid_cap_mplane,
>  	.vidioc_g_fmt_vid_cap_mplane = rkisp1_g_fmt_vid_cap_mplane,
>  	.vidioc_enum_fmt_vid_cap = rkisp1_enum_fmt_vid_cap_mplane,
> +	.vidioc_enum_framesizes = rkisp1_enum_framesizes,
>  	.vidioc_querycap = rkisp1_querycap,
>  	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
>  	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,

-- 
Regards,

Laurent Pinchart