Re: [PATCH v3 2/4] media: imx: imx7-media-csi: Remove interlave fields

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Rui Miguel Silva <rmfrfs@gmail.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	linux-media@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 2/4] media: imx: imx7-media-csi: Remove interlave fields
Date: Tue, 18 Apr 2023 18:43:51 +0300	[thread overview]
Message-ID: <20230418154351.GH30837@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20230418122041.1318862-3-alexander.stein@ew.tq-group.com>

Hi Alexander,

Thank you for the patch.

In the subject line, "interlave" is misspelled. I'd write "Remove
incorrect interlacing support"

On Tue, Apr 18, 2023 at 02:20:39PM +0200, Alexander Stein wrote:
> Interlaced mode is currently not supported, so disable fields in try_fmt.

And here,

The driver doesn't currently support interlacing, but due to legacy
leftovers, it accepts values for the pixel format "field" field other
than V4L2_FIELD_NONE. Fix it by hardcoding V4L2_FIELD_NONE. Proper
interlacing support can be implemented later if desired.

With this,

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

I can apply those changes directly to my tree if you would prefer
avoiding a v4.

> Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
> ---
> Changes in v3:
> * Remove left-over interlace mode check
> 
>  drivers/media/platform/nxp/imx7-media-csi.c | 15 +--------------
>  1 file changed, 1 insertion(+), 14 deletions(-)
> 
> diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> index b149374b07ee1..1315f5743b76f 100644
> --- a/drivers/media/platform/nxp/imx7-media-csi.c
> +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> @@ -1162,20 +1162,6 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
>  		cc = imx7_csi_find_pixel_format(pixfmt->pixelformat);
>  	}
>  
> -	/* Allow IDMAC interweave but enforce field order from source. */
> -	if (V4L2_FIELD_IS_INTERLACED(pixfmt->field)) {
> -		switch (pixfmt->field) {
> -		case V4L2_FIELD_SEQ_TB:
> -			pixfmt->field = V4L2_FIELD_INTERLACED_TB;
> -			break;
> -		case V4L2_FIELD_SEQ_BT:
> -			pixfmt->field = V4L2_FIELD_INTERLACED_BT;
> -			break;
> -		default:
> -			break;
> -		}
> -	}
> -
>  	/*
>  	 * Round up width for minimum burst size.
>  	 *
> @@ -1187,6 +1173,7 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
>  
>  	pixfmt->bytesperline = pixfmt->width * cc->bpp / 8;
>  	pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
> +	pixfmt->field = V4L2_FIELD_NONE;
>  
>  	return cc;
>  }

-- 
Regards,

Laurent Pinchart

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