[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 at baylibre.com>
> 
> 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 at baylibre.com>
> Signed-off-by: Florian Sylvestre <fsylvestre at baylibre.com>
> [Paul Elder fix irq locking]
> Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
> Co-developed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Co-developed-by: Julien Stephan <jstephan at baylibre.com>
> Signed-off-by: Julien Stephan <jstephan at baylibre.com>
> ---

[snip]

> +
> +static int mtk_cam_vb2_queue_setup(struct vb2_queue *vq,
> +				   unsigned int *num_buffers,
> +				   unsigned int *num_planes,
> +				   unsigned int sizes[],
> +				   struct device *alloc_devs[])
> +{
> +	struct mtk_cam_video_device *vdev =
> +		vb2_queue_to_mtk_cam_video_device(vq);
> +	unsigned int max_buffer_count = vdev->desc->max_buf_count;
> +	const struct v4l2_pix_format_mplane *fmt = &vdev->format;
> +	unsigned int size;
> +	unsigned int np_conf;
> +	unsigned int i;
> +
> +	/* Check the limitation of buffer size */
> +	if (max_buffer_count)

max_buffer_count is always zero, so this checking is redundant.

Regards,
CK

> +		*num_buffers = clamp_val(*num_buffers, 1,
> max_buffer_count);
> +
> +	size = fmt->plane_fmt[0].sizeimage;
> +	/* Add for q.create_bufs with fmt.g_sizeimage(p) / 2 test */
> +
> +	np_conf = 1;
> +
> +	if (*num_planes == 0) {
> +		*num_planes = np_conf;
> +		for (i = 0; i < *num_planes; ++i)
> +			sizes[i] = size;
> +	} else if (*num_planes != np_conf || sizes[0] < size) {
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +