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pisp_be: Stride alignment. #6985

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Merged
merged 2 commits into from
Aug 4, 2025
+110 −52
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pisp_be: Stride alignment. #6985

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8153625
drivers: meida: pisp_be: Rename format align field
naushir Aug 4, 2025
470b5d9
drivers: media: pisp_be: Add minimal alinment to the format structure
naushir Aug 4, 2025
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9 changes: 8 additions & 1 deletion drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1104,9 +1104,16 @@ static void pispbe_set_plane_params(struct v4l2_format *f,
for (unsigned int i = 0; i < nplanes; i++) {
struct v4l2_plane_pix_format *p = &f->fmt.pix_mp.plane_fmt[i];
unsigned int bpl, plane_size;
/*
* If a stride has been provided, ensure it meets the minimal
* alignment constraints. If not provided, use an optimal stride
* alignment for efficiency.
*/
const unsigned int align =
p->bytesperline ? fmt->min_align : fmt->opt_align;

bpl = (f->fmt.pix_mp.width * fmt->bit_depth) >> 3;
bpl = ALIGN(max(p->bytesperline, bpl), fmt->align);
bpl = ALIGN(max(p->bytesperline, bpl), align);

plane_size = bpl * f->fmt.pix_mp.height *
(nplanes > 1 ? fmt->plane_factor[i] : total_plane_factor);
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