From 4d24376370fbfc87231d54434a683f2913abcce4 Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Wed, 14 Aug 2019 10:53:30 +0200
Subject: gpu: ipu-v3: image-convert: only sample into the next tile if
necessary
Git-commit: 4d24376370fbfc87231d54434a683f2913abcce4
Patch-mainline: v5.4-rc1
References: bsc#1152489
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>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/ipu-v3/ipu-image-convert.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/ipu-v3/ipu-image-convert.c b/drivers/gpu/ipu-v3/ipu-image-convert.c
index 1a466611ad48..eeca50d9a1ee 100644
--- a/drivers/gpu/ipu-v3/ipu-image-convert.c
+++ b/drivers/gpu/ipu-v3/ipu-image-convert.c
@@ -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)
--
2.28.0