[PATCH v8 19/34] media: Add i.MX media core driver

[p.zabel@pengutronix.de (Philipp Zabel)]

On Wed, 2017-06-07 at 11:33 -0700, Steve Longerbeam wrote:
> Add the core media driver for i.MX SOC.
> 
> Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
> 
> Switch from the v4l2_of_ APIs to the v4l2_fwnode_ APIs.
> 
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> 
> Add the bayer formats to imx-media's list of supported pixel and bus
> formats.
> 
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> ---
[...]
> diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c
> new file mode 100644
> index 0000000..da694f6
> --- /dev/null
> +++ b/drivers/staging/media/imx/imx-media-dev.c
> @@ -0,0 +1,666 @@
[...]
> +/*
> + * adds given video device to given imx-media source pad vdev list.
> + * Continues upstream from the pad entity's sink pads.
> + */
> +static int imx_media_add_vdev_to_pad(struct imx_media_dev *imxmd,
> +				     struct imx_media_video_dev *vdev,
> +				     struct media_pad *srcpad)
> +{
> +	struct media_entity *entity = srcpad->entity;
> +	struct imx_media_subdev *imxsd;
> +	struct imx_media_pad *imxpad;
> +	struct media_link *link;
> +	struct v4l2_subdev *sd;
> +	int i, vdev_idx, ret;
> +
> +	if (!is_media_entity_v4l2_subdev(entity))
> +		return -EINVAL;

Could we make this return 0, to just skip non-v4l2_subdev entities?
Currently, imx_media_probe_complete silently fails with this -EINVAL if
there is a tvp5150 connected due to the separate media entities that the
tvp5150 driver creates for the input connectors (Composite0, for
example).

regards
Philipp