linux-kernel - Re: [PATCH v4 36/36] media: imx: propagate sink pad formats to source pads

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Date:   Thu, 16 Feb 2017 12:29:28 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Steve Longerbeam <slongerbeam@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        kernel@...gutronix.de, fabio.estevam@....com,
        linux@...linux.org.uk, mchehab@...nel.org, hverkuil@...all.nl,
        nick@...anahar.org, markus.heiser@...marIT.de,
        laurent.pinchart+renesas@...asonboard.com, bparrot@...com,
        geert@...ux-m68k.org, arnd@...db.de, sudipm.mukherjee@...il.com,
        minghsiu.tsai@...iatek.com, tiffany.lin@...iatek.com,
        jean-christophe.trotin@...com, horms+renesas@...ge.net.au,
        niklas.soderlund+renesas@...natech.se, robert.jarzmik@...e.fr,
        songjun.wu@...rochip.com, andrew-ct.chen@...iatek.com,
        gregkh@...uxfoundation.org, shuah@...nel.org,
        sakari.ailus@...ux.intel.com, pavel@....cz,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org,
        Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: Re: [PATCH v4 36/36] media: imx: propagate sink pad formats to
 source pads

On Wed, 2017-02-15 at 18:19 -0800, Steve Longerbeam wrote:
[...]
> diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
> index dd9d499..c43f85f 100644
> --- a/drivers/staging/media/imx/imx-ic-prpencvf.c
> +++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
> @@ -806,16 +806,22 @@ static int prp_set_fmt(struct v4l2_subdev *sd,
>  	if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
>  		cfg->try_fmt = sdformat->format;
>  	} else {
> -		priv->format_mbus[sdformat->pad] = sdformat->format;
> +		struct v4l2_mbus_framefmt *f =
> +			&priv->format_mbus[sdformat->pad];
> +		struct v4l2_mbus_framefmt *outf =
> +			&priv->format_mbus[PRPENCVF_SRC_PAD];
> +
> +		*f = sdformat->format;
>  		priv->cc[sdformat->pad] = cc;
> -		if (sdformat->pad == PRPENCVF_SRC_PAD) {
> -			/*
> -			 * update the capture device format if this is
> -			 * the IDMAC output pad
> -			 */
> -			imx_media_mbus_fmt_to_pix_fmt(&vdev->fmt.fmt.pix,
> -						      &sdformat->format, cc);
> +
> +		/* propagate format to source pad */
> +		if (sdformat->pad == PRPENCVF_SINK_PAD) {
> +			outf->width = f->width;
> +			outf->height = f->height;

What about media bus format, field, and colorimetry?

>  		}
> +
> +		/* update the capture device format from output pad */
> +		imx_media_mbus_fmt_to_pix_fmt(&vdev->fmt.fmt.pix, outf, cc);
>  	}
>  
>  	return 0;
> diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
> index 3e6b607..9d9ec03 100644
> --- a/drivers/staging/media/imx/imx-media-csi.c
> +++ b/drivers/staging/media/imx/imx-media-csi.c
> @@ -1161,19 +1161,27 @@ static int csi_set_fmt(struct v4l2_subdev *sd,
>  	if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
>  		cfg->try_fmt = sdformat->format;
>  	} else {
> +		struct v4l2_mbus_framefmt *f_direct, *f_idmac;
> +
>  		priv->format_mbus[sdformat->pad] = sdformat->format;
>  		priv->cc[sdformat->pad] = cc;
> -		/* Reset the crop window if this is the input pad */
> -		if (sdformat->pad == CSI_SINK_PAD)
> +
> +		f_direct = &priv->format_mbus[CSI_SRC_PAD_DIRECT];
> +		f_idmac = &priv->format_mbus[CSI_SRC_PAD_IDMAC];
> +
> +		if (sdformat->pad == CSI_SINK_PAD) {
> +			/* reset the crop window */
>  			priv->crop = crop;
> -		else if (sdformat->pad == CSI_SRC_PAD_IDMAC) {
> -			/*
> -			 * update the capture device format if this is
> -			 * the IDMAC output pad
> -			 */
> -			imx_media_mbus_fmt_to_pix_fmt(&vdev->fmt.fmt.pix,
> -						      &sdformat->format, cc);
> +
> +			/* propagate format to source pads */
> +			f_direct->width = crop.width;
> +			f_direct->height = crop.height;
> +			f_idmac->width = crop.width;
> +			f_idmac->height = crop.height;

This is missing also media bus format, field and colorimetry
propagation.

>  		}
> +
> +		/* update the capture device format from IDMAC output pad */
> +		imx_media_mbus_fmt_to_pix_fmt(&vdev->fmt.fmt.pix, f_idmac, cc);
>  	}
>  
>  	return 0;
> diff --git a/drivers/staging/media/imx/imx-media-vdic.c b/drivers/staging/media/imx/imx-media-vdic.c
> index 61e6017..55fb522 100644
> --- a/drivers/staging/media/imx/imx-media-vdic.c
> +++ b/drivers/staging/media/imx/imx-media-vdic.c
> @@ -649,8 +649,21 @@ static int vdic_set_fmt(struct v4l2_subdev *sd,
>  	if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
>  		cfg->try_fmt = sdformat->format;
>  	} else {
> -		priv->format_mbus[sdformat->pad] = sdformat->format;
> +		struct v4l2_mbus_framefmt *f =
> +			&priv->format_mbus[sdformat->pad];
> +		struct v4l2_mbus_framefmt *outf =
> +			&priv->format_mbus[VDIC_SRC_PAD_DIRECT];
> +
> +		*f = sdformat->format;
>  		priv->cc[sdformat->pad] = cc;
> +
> +		/* propagate format to source pad */
> +		if (sdformat->pad == VDIC_SINK_PAD_DIRECT ||
> +		    sdformat->pad == VDIC_SINK_PAD_IDMAC) {
> +			outf->width = f->width;
> +			outf->height = f->height;
> +			outf->field = V4L2_FIELD_NONE;

This is missing colorimetry, too.

regards
Philipp