gpu: ipu-v3: Fix U/V offset macros for planar 4:2:0

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The U and V offset macros for planar 4:2:0 (U_OFFSET, V_OFFSET, and
UV_OFFSET), are not correct. The height component to the offset was
calculated as:

(pix->width * y / 4)

But this does not produce correct offsets for odd values of y (luma
line #). The luma line # must be decimated by two to produce the
correct U/V line #, so the correct formula is:

(pix->width * (y / 2) / 2)

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

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Steve Longerbeam 2018-08-01 12:12:17 -07:00 • committed by Philipp Zabel

parent bbe4a089e2

commit 9f0ba3d92f

1 changed files with 3 additions and 3 deletions

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drivers/gpu/ipu-v3/ipu-cpmem.c

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