From ea7557013800f41a11a0e1a96360bb946a7b52e0 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Sun, 15 Mar 2020 10:54:46 +0100 Subject: [PATCH] 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: 03e612e701a6 ("media: cedrus: Fix H264 4k support") Signed-off-by: Jernej Skrabec Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c index bfb4a4820a67..54ee2aa423e2 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c @@ -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,