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

From: Philipp Zabel <p.zabel@pengutronix.de>
To: Steve Longerbeam <slongerbeam@gmail.com>
Cc: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
	kernel@pengutronix.de, fabio.estevam@nxp.com,
	linux@armlinux.org.uk, mchehab@kernel.org, hverkuil@xs4all.nl,
	nick@shmanahar.org, markus.heiser@darmarIT.de,
	laurent.pinchart+renesas@ideasonboard.com, bparrot@ti.com,
	geert@linux-m68k.org, arnd@arndb.de, sudipm.mukherjee@gmail.com,
	minghsiu.tsai@mediatek.com, tiffany.lin@mediatek.com,
	jean-christophe.trotin@st.com, horms+renesas@verge.net.au,
	niklas.soderlund+renesas@ragnatech.se, robert.jarzmik@free.fr,
	songjun.wu@microchip.com, andrew-ct.chen@mediatek.com,
	gregkh@linuxfoundation.org, shuah@kernel.org,
	sakari.ailus@linux.intel.com, pavel@ucw.cz,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, devel@driverdev.osuosl.org,
	Steve Longerbeam <steve_longerbeam@mentor.com>
Subject: Re: [PATCH v4 36/36] media: imx: propagate sink pad formats to source pads
Date: Thu, 16 Feb 2017 12:29:28 +0100	[thread overview]
Message-ID: <1487244568.2377.36.camel@pengutronix.de> (raw)
In-Reply-To: <1487211578-11360-37-git-send-email-steve_longerbeam@mentor.com>

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