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gpu: ipu-v3: image-convert: only sample into the next tile if necessary

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The first pixel of the next tile is only sampled by the hardware if the
fractional input position corresponding to the last written output pixel
is not an integer position.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2019-08-14 10:53:30 +02:00
parent fbefb84dd1
commit 4d24376370
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/ipu-v3/ipu-image-convert.c
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@ -1151,7 +1151,7 @@ static void calc_tile_resize_coefficients(struct ipu_image_convert_ctx *ctx)
* burst size.
*/
last_output = resized_width - 1;
if (closest)
if (closest && ((last_output * resize_coeff_h) % 8192))
last_output++;
in_width = round_up(
(DIV_ROUND_UP(last_output * resize_coeff_h, 8192) + 1)
@ -1208,7 +1208,7 @@ static void calc_tile_resize_coefficients(struct ipu_image_convert_ctx *ctx)
* IDMAC restrictions.
*/
last_output = resized_height - 1;
if (closest)
if (closest && ((last_output * resize_coeff_v) % 8192))
last_output++;
in_height = round_up(
(DIV_ROUND_UP(last_output * resize_coeff_v, 8192) + 1)