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gpu: ipu-v3: turns out the IPU can only downsize 4:1 

The value for downsizing 8:1 is marked as reserved in the technical reference
manual and the documentation states downsizing capability up to 4:1 only.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2015-03-23 11:16:21 +01:00
parent f7089d923e
commit 8f361b279f
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/ipu-v3/ipu-ic.c
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@ -297,8 +297,8 @@ static int calc_resize_coeffs(struct ipu_ic *ic,
return -EINVAL;
}
/* Cannot downsize more than 8:1 */
if ((out_size << 3) < in_size) {
/* Cannot downsize more than 4:1 */
if ((out_size << 2) < in_size) {
dev_err(ipu->dev, "Unsupported downsize\n");
return -EINVAL;
}