Re: [PATCH v4 4/5] media: platform: mediatek: isp_30: add mediatek ISP3.0 camsv

[CK Hu (胡俊光)]

Hi, Julien:

On Wed, 2024-01-10 at 15:14 +0100, Julien Stephan wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  From: Phi-bang Nguyen <pnguyen@xxxxxxxxxxxx>
> 
> This driver provides a path to bypass the SoC ISP so that image data
> coming from the SENINF can go directly into memory without any image
> processing. This allows the use of an external ISP.
> 
> Signed-off-by: Phi-bang Nguyen <pnguyen@xxxxxxxxxxxx>
> Signed-off-by: Florian Sylvestre <fsylvestre@xxxxxxxxxxxx>
> [Paul Elder fix irq locking]
> Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
> Co-developed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Co-developed-by: Julien Stephan <jstephan@xxxxxxxxxxxx>
> Signed-off-by: Julien Stephan <jstephan@xxxxxxxxxxxx>
> ---

[snip]

> +
> +#define IMG_MAX_WIDTH			5376
> +#define IMG_MAX_HEIGHT			4032
> +#define IMG_DEF_WIDTH			1920
> +#define IMG_DEF_HEIGHT			1080

Why do you define default width/height? Does 1920x1080 have any
benefit? If so, add comment to describe why choose 1920x1080. If no, I
think using IMG_MAX_WIDTH/IMG_MAX_HEIGHT as default is a good choice
because we could drop this redundant definition and let hardware work
in its best quality.

Regards,
CK

> +#define IMG_MIN_WIDTH			80
> +#define IMG_MIN_HEIGHT			60
> +