linux-kernel - Re: [PATCH v3 02/15] media: rcar-isp: Improve ISPPROCMODE_DT_PROC_MODE

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Message-ID: <20250602094327.GE3645@pendragon.ideasonboard.com>
Date: Mon, 2 Jun 2025 12:43:27 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Cc: Niklas Söderlund <niklas.soderlund@...natech.se>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	linux-media@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Niklas Söderlund <niklas.soderlund+renesas@...natech.se>,
	Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	Jacopo Mondi <jacopo.mondi@...asonboard.com>
Subject: Re: [PATCH v3 02/15] media: rcar-isp: Improve
 ISPPROCMODE_DT_PROC_MODE_VC

Hi Tomi,

Thank you for the patch.

On Fri, May 30, 2025 at 04:50:31PM +0300, Tomi Valkeinen wrote:
> Instead of having four macros for ISPPROCMODE_DT_PROC_MODE_VC[0123](pm),
> have just one ISPPROCMODE_DT_PROC_MODE_VCn(vc, pm).
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>

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

> ---
>  drivers/media/platform/renesas/rcar-isp/csisp.c | 13 +++++--------
>  1 file changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/rcar-isp/csisp.c b/drivers/media/platform/renesas/rcar-isp/csisp.c
> index 1eb29a0b774a..8fb2cc3b5650 100644
> --- a/drivers/media/platform/renesas/rcar-isp/csisp.c
> +++ b/drivers/media/platform/renesas/rcar-isp/csisp.c
> @@ -28,10 +28,7 @@
>  #define ISPSTART_STOP					0x0000
>  
>  #define ISPPROCMODE_DT_REG(n)				(0x1100 + (0x4 * (n)))
> -#define ISPPROCMODE_DT_PROC_MODE_VC3(pm)		(((pm) & 0x3f) << 24)
> -#define ISPPROCMODE_DT_PROC_MODE_VC2(pm)		(((pm) & 0x3f) << 16)
> -#define ISPPROCMODE_DT_PROC_MODE_VC1(pm)		(((pm) & 0x3f) << 8)
> -#define ISPPROCMODE_DT_PROC_MODE_VC0(pm)		((pm) & 0x3f)
> +#define ISPPROCMODE_DT_PROC_MODE_VCn(vc, pm)		(((pm) & 0x3f) << (8 * (vc)))
>  
>  #define ISPCS_FILTER_ID_CH_REG(n)			(0x3000 + (0x0100 * (n)))
>  
> @@ -263,10 +260,10 @@ static int risp_start(struct rcar_isp *isp, struct v4l2_subdev_state *state)
>  
>  	/* Setup processing method. */
>  	risp_write_cs(isp, ISPPROCMODE_DT_REG(format->datatype),
> -		      ISPPROCMODE_DT_PROC_MODE_VC3(format->procmode) |
> -		      ISPPROCMODE_DT_PROC_MODE_VC2(format->procmode) |
> -		      ISPPROCMODE_DT_PROC_MODE_VC1(format->procmode) |
> -		      ISPPROCMODE_DT_PROC_MODE_VC0(format->procmode));
> +		      ISPPROCMODE_DT_PROC_MODE_VCn(3, format->procmode) |
> +		      ISPPROCMODE_DT_PROC_MODE_VCn(2, format->procmode) |
> +		      ISPPROCMODE_DT_PROC_MODE_VCn(1, format->procmode) |
> +		      ISPPROCMODE_DT_PROC_MODE_VCn(0, format->procmode));
>  
>  	/* Start ISP. */
>  	risp_write_cs(isp, ISPSTART_REG, ISPSTART_START);

-- 
Regards,

Laurent Pinchart