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media: cedrus: h264: Fix 4K decoding on H6 

Due to unknown reason, H6 needs larger intraprediction buffer for 4K
videos than other SoCs. This was discovered by playing 4096x2304 video,
which is maximum what H6 VPU is supposed to support.

Fixes: 03e612e701 ("media: cedrus: Fix H264 4k support")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Jernej Skrabec 2020-03-15 10:54:46 +01:00 committed by Mauro Carvalho Chehab
parent af72bc8cd6
commit ea75570138
1 changed files with 5 additions and 1 deletions
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6
drivers/staging/media/sunxi/cedrus/cedrus_h264.c
View File

@ -610,8 +610,12 @@ static int cedrus_h264_start(struct cedrus_ctx *ctx)
goto err_mv_col_buf;
}
/*
* NOTE: Multiplying by two deviates from CedarX logic, but it
* is for some unknown reason needed for H264 4K decoding on H6.
*/
ctx->codec.h264.intra_pred_buf_size =
ALIGN(ctx->src_fmt.width, 64) * 5;
ALIGN(ctx->src_fmt.width, 64) * 5 * 2;
ctx->codec.h264.intra_pred_buf =
dma_alloc_coherent(dev->dev,
ctx->codec.h264.intra_pred_buf_size,