From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Tue, 18 Sep 2018 09:34:21 +0000 (+0200)
Subject: gpu: ipu-v3: image-convert: allow three rows or columns
X-Git-Tag: v5.4-rc1~1841^2~15^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=815b02e3c05dcfae759a96903025beb5dab85f97;p=platform%2Fkernel%2Flinux-rpi.git

gpu: ipu-v3: image-convert: allow three rows or columns

If width or height are in the [2049, 3072] range, allow to
use just three tiles in this dimension, instead of four.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Steve Longerbeam <slongerbeam@gmail.com>
Tested-by: Steve Longerbeam <slongerbeam@gmail.com>
---

diff --git a/drivers/gpu/ipu-v3/ipu-image-convert.c b/drivers/gpu/ipu-v3/ipu-image-convert.c
index 3e73494..13103ab 100644
--- a/drivers/gpu/ipu-v3/ipu-image-convert.c
+++ b/drivers/gpu/ipu-v3/ipu-image-convert.c
@@ -379,12 +379,7 @@ static int alloc_dma_buf(struct ipu_image_convert_priv *priv,
 
 static inline int num_stripes(int dim)
 {
-	if (dim <= 1024)
-		return 1;
-	else if (dim <= 2048)
-		return 2;
-	else
-		return 4;
+	return (dim - 1) / 1024 + 1;
 }
 
 /*