[v3,1/4] media: imx: imx7-media-csi: Get rid of superfluous call to imx7_csi_mbus_fmt_to_pix_fmt
Commit Message
There is no need to convert input pixformat to mbus_framefmt and back
again. Instead apply pixformat width constrains directly.
Assign compose values before adjusting pixformat height/width.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
Changes in v3:
* Move compose assignment before width adjustments
* Add comments regarding width multiples
* Remove unneeded stride rounding
drivers/media/platform/nxp/imx7-media-csi.c | 22 ++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
Comments
Hi Alexander,
Thank you for the patch.
On Tue, Apr 18, 2023 at 02:20:38PM +0200, Alexander Stein wrote:
> There is no need to convert input pixformat to mbus_framefmt and back
> again. Instead apply pixformat width constrains directly.
> Assign compose values before adjusting pixformat height/width.
>
> Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
> Changes in v3:
> * Move compose assignment before width adjustments
> * Add comments regarding width multiples
> * Remove unneeded stride rounding
>
> drivers/media/platform/nxp/imx7-media-csi.c | 22 ++++++++++++++-------
> 1 file changed, 15 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> index b701e823436a8..b149374b07ee1 100644
> --- a/drivers/media/platform/nxp/imx7-media-csi.c
> +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> @@ -1145,9 +1145,13 @@ static const struct imx7_csi_pixfmt *
> __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
> struct v4l2_rect *compose)
> {
> - struct v4l2_mbus_framefmt fmt_src;
> const struct imx7_csi_pixfmt *cc;
>
> + if (compose) {
> + compose->width = pixfmt->width;
> + compose->height = pixfmt->height;
> + }
> +
> /*
> * Find the pixel format, default to the first supported format if not
> * found.
> @@ -1172,13 +1176,17 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
> }
> }
>
> - v4l2_fill_mbus_format(&fmt_src, pixfmt, 0);
> - imx7_csi_mbus_fmt_to_pix_fmt(pixfmt, &fmt_src, cc);
> + /*
> + * Round up width for minimum burst size.
> + *
> + * TODO: Implement configurable stride support, and check what the real
> + * hardware alignment constraint on the width is.
> + */
> + v4l_bound_align_image(&pixfmt->width, 1, 0xffff, 8,
> + &pixfmt->height, 1, 0xffff, 1, 0);
>
> - if (compose) {
> - compose->width = fmt_src.width;
> - compose->height = fmt_src.height;
> - }
> + pixfmt->bytesperline = pixfmt->width * cc->bpp / 8;
> + pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
>
> return cc;
> }
@@ -1145,9 +1145,13 @@ static const struct imx7_csi_pixfmt *
__imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
struct v4l2_rect *compose)
{
- struct v4l2_mbus_framefmt fmt_src;
const struct imx7_csi_pixfmt *cc;
+ if (compose) {
+ compose->width = pixfmt->width;
+ compose->height = pixfmt->height;
+ }
+
/*
* Find the pixel format, default to the first supported format if not
* found.
@@ -1172,13 +1176,17 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
}
}
- v4l2_fill_mbus_format(&fmt_src, pixfmt, 0);
- imx7_csi_mbus_fmt_to_pix_fmt(pixfmt, &fmt_src, cc);
+ /*
+ * Round up width for minimum burst size.
+ *
+ * TODO: Implement configurable stride support, and check what the real
+ * hardware alignment constraint on the width is.
+ */
+ v4l_bound_align_image(&pixfmt->width, 1, 0xffff, 8,
+ &pixfmt->height, 1, 0xffff, 1, 0);
- if (compose) {
- compose->width = fmt_src.width;
- compose->height = fmt_src.height;
- }
+ pixfmt->bytesperline = pixfmt->width * cc->bpp / 8;
+ pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
return cc;
}