[PATCH 3/5] s5p-fimc: Roundup imagesize to row size for tiled formats

[Nicolas Dufresne]

For tiled format, we need to allocated a multiple of the row size. A
good example is for 1280x720, wich get adjusted to 1280x736. In tiles,
this mean Y plane is 20x23 and UV plane 20x12. Because of the rounding,
the previous code would only have enough space to fit half of the last
row.

Signed-off-by: Nicolas Dufresne <nicolas.dufre...@collabora.com>
---
 drivers/media/platform/exynos4-is/fimc-core.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/fimc-core.c 
b/drivers/media/platform/exynos4-is/fimc-core.c
index 2e70fab..7ea15ef 100644
--- a/drivers/media/platform/exynos4-is/fimc-core.c
+++ b/drivers/media/platform/exynos4-is/fimc-core.c
@@ -736,6 +736,7 @@ void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 
width, u32 height,
        for (i = 0; i < pix->num_planes; ++i) {
                struct v4l2_plane_pix_format *plane_fmt = &pix->plane_fmt[i];
                u32 bpl = plane_fmt->bytesperline;
+               u32 sizeimage;
 
                if (fmt->colplanes > 1 && (bpl == 0 || bpl < pix->width))
                        bpl = pix->width; /* Planar */
@@ -755,8 +756,16 @@ void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 
width, u32 height,
                        bytesperline /= 2;
 
                plane_fmt->bytesperline = bytesperline;
-               plane_fmt->sizeimage = max((pix->width * pix->height *
-                                  fmt->depth[i]) / 8, plane_fmt->sizeimage);
+               sizeimage = pix->width * pix->height * fmt->depth[i] / 8;
+
+               /* Ensure full last row for tiled formats */
+               if (tiled_fmt(fmt)) {
+                       /* 64 * 32 * plane_fmt->bytesperline / 64 */
+                       u32 row_size = plane_fmt->bytesperline * 32;
+                       sizeimage = roundup(sizeimage, row_size);
+               }
+
+               plane_fmt->sizeimage = max(sizeimage, plane_fmt->sizeimage);
        }
 }
 
-- 
1.8.5.3

signature.asc
Description: This is a digitally signed message part