linux-kernel - Re: [PATCH 1/4] media: ov5647: Add set_fmt and get

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Message-ID: <20200415121114.2bfe6lqjy57p2xlb@uno.localdomain>
Date:   Wed, 15 Apr 2020 14:11:14 +0200
From:   Jacopo Mondi <jacopo@...ndi.org>
To:     Roman Kovalivskyi <roman.kovalivskyi@...ballogic.com>
Cc:     linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org,
        Luis Oliveira <lolivei@...opsys.com>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Michael Rodin <mrodin@...adit-jv.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hugues Fruchet <hugues.fruchet@...com>,
        Maxime Ripard <mripard@...nel.org>,
        Adam Ford <aford173@...il.com>,
        Todor Tomov <todor.tomov@...aro.org>,
        Suresh Udipi <sudipi@...adit-jv.com>,
        Andrew Gabbasov <andrew_gabbasov@...tor.com>,
        Eugeniu Rosca <erosca@...adit-jv.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.org>
Subject: Re: [PATCH 1/4] media: ov5647: Add set_fmt and get_fmt calls.

Hello Roman,

On Mon, Apr 13, 2020 at 12:17:44PM +0300, Roman Kovalivskyi wrote:
> From: Dave Stevenson <dave.stevenson@...pberrypi.org>
>
> There's no way to query the subdevice for the supported
> resolutions. Add set_fmt and get_fmt implementations. Since there's
> only one format supported set_fmt does nothing and get returns single
> format.
>
> Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.org>
> Signed-off-by: Roman Kovalivskyi <roman.kovalivskyi@...ballogic.com>

Looks good to me
Reviewed-by: Jacopo Mondi <jacopo@...ndi.org>

Thanks
  j

> ---
>  drivers/media/i2c/ov5647.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>
> diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
> index e7d2e5b4ad4b..3e587eb0a30e 100644
> --- a/drivers/media/i2c/ov5647.c
> +++ b/drivers/media/i2c/ov5647.c
> @@ -463,8 +463,30 @@ static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,
>  	return 0;
>  }
>
> +static int ov5647_set_get_fmt(struct v4l2_subdev *sd,
> +			      struct v4l2_subdev_pad_config *cfg,
> +			      struct v4l2_subdev_format *format)
> +{
> +	struct v4l2_mbus_framefmt *fmt = &format->format;
> +
> +	if (format->pad != 0)
> +		return -EINVAL;
> +
> +	/* Only one format is supported, so return that */
> +	memset(fmt, 0, sizeof(*fmt));
> +	fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8;
> +	fmt->colorspace = V4L2_COLORSPACE_SRGB;
> +	fmt->field = V4L2_FIELD_NONE;
> +	fmt->width = 640;
> +	fmt->height = 480;
> +
> +	return 0;
> +}
> +
>  static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = {
>  	.enum_mbus_code = ov5647_enum_mbus_code,
> +	.set_fmt =	  ov5647_set_get_fmt,
> +	.get_fmt =	  ov5647_set_get_fmt,
>  };
>
>  static const struct v4l2_subdev_ops ov5647_subdev_ops = {
> --
> 2.17.1
>