linux-kernel - Re: [PATCH 4/6] media: vsp1: rwpf: Break out format handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250123215019.GD10642@pendragon.ideasonboard.com>
Date: Thu, 23 Jan 2025 23:50:19 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Niklas Söderlund <niklas.soderlund@...natech.se>,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH 4/6] media: vsp1: rwpf: Break out format handling

Hi Jacopo,

Thank you for the patch.

On Thu, Jan 23, 2025 at 06:04:05PM +0100, Jacopo Mondi wrote:
> The current implementation of the r/wpf format handling assumes
> three formats to be supported in the RGB/YUV space.
> 
> With the forthcoming support for VSPX the r/wpf units will be
> used to fetch from exteranal memory images in RAW Bayer format

s/exteranal/external/

> and buffers of ISP configuration parameters.
> 
> Prepare for adding support for these new formats by breaking
> out the list of supported media bus codes in the vsp1_rwpf.c
> file.
> 
> Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

> ---
>  drivers/media/platform/renesas/vsp1/vsp1_rwpf.c | 25 ++++++++++++++-----------
>  1 file changed, 14 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
> index 9d38203e73d00b82a1a7db0353e2f0b5a94084f6..93b0ed5fd0da0c6a182dbbfe1e54eb8cfd66c493 100644
> --- a/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
> +++ b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
> @@ -16,6 +16,12 @@
>  #define RWPF_MIN_WIDTH				1
>  #define RWPF_MIN_HEIGHT				1
>  
> +static const u32 rwpf_mbus_codes[] = {
> +	MEDIA_BUS_FMT_ARGB8888_1X32,
> +	MEDIA_BUS_FMT_AHSV8888_1X32,
> +	MEDIA_BUS_FMT_AYUV8_1X32,
> +};
> +
>  /* -----------------------------------------------------------------------------
>   * V4L2 Subdevice Operations
>   */
> @@ -24,16 +30,10 @@ static int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
>  				    struct v4l2_subdev_state *sd_state,
>  				    struct v4l2_subdev_mbus_code_enum *code)
>  {
> -	static const unsigned int codes[] = {
> -		MEDIA_BUS_FMT_ARGB8888_1X32,
> -		MEDIA_BUS_FMT_AHSV8888_1X32,
> -		MEDIA_BUS_FMT_AYUV8_1X32,
> -	};
> -
> -	if (code->index >= ARRAY_SIZE(codes))
> +	if (code->index >= ARRAY_SIZE(rwpf_mbus_codes))
>  		return -EINVAL;
>  
> -	code->code = codes[code->index];
> +	code->code = rwpf_mbus_codes[code->index];
>  
>  	return 0;
>  }
> @@ -57,6 +57,7 @@ static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
>  	struct vsp1_rwpf *rwpf = to_rwpf(subdev);
>  	struct v4l2_subdev_state *state;
>  	struct v4l2_mbus_framefmt *format;
> +	unsigned int i;
>  	int ret = 0;
>  
>  	mutex_lock(&rwpf->entity.lock);
> @@ -68,9 +69,11 @@ static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
>  	}
>  
>  	/* Default to YUV if the requested format is not supported. */
> -	if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
> -	    fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
> -	    fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
> +	for (i = 0; i < ARRAY_SIZE(rwpf_mbus_codes); ++i) {
> +		if (fmt->format.code == rwpf_mbus_codes[i])
> +			break;
> +	}
> +	if (i == ARRAY_SIZE(rwpf_mbus_codes))
>  		fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
>  
>  	format = v4l2_subdev_state_get_format(state, fmt->pad);
> 

-- 
Regards,

Laurent Pinchart