linux-kernel - [PATCH 7/7] media: hantro: Allows luma and chroma depth to be different

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Date:   Fri, 17 Jun 2022 13:58:02 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     mchehab@...nel.org, hverkuil@...all.nl,
        ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...il.com, samuel@...lland.org,
        nicolas.dufresne@...labora.com, andrzej.p@...labora.com
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH 7/7] media: hantro: Allows luma and chroma depth to be different

Luma and chroma depth are set on different hardware registers.
Even if they aren't identical the bitstream can be compliant
to HEVC specifications and decoded by the hardware.

With this patch TSUNEQBD_A_MAIN10_Technicolor_2 conformance test
is successfully decoded.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
 drivers/staging/media/hantro/hantro_hevc.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/media/hantro/hantro_hevc.c b/drivers/staging/media/hantro/hantro_hevc.c
index 85688a4df166..26b1329893f7 100644
--- a/drivers/staging/media/hantro/hantro_hevc.c
+++ b/drivers/staging/media/hantro/hantro_hevc.c
@@ -156,9 +156,6 @@ static int tile_buffer_reallocate(struct hantro_ctx *ctx)
 
 int hantro_hevc_validate_sps(struct hantro_ctx *ctx, const struct v4l2_ctrl_hevc_sps *sps)
 {
-	if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8)
-		/* Luma and chroma bit depth mismatch */
-		return -EINVAL;
 	if (sps->bit_depth_luma_minus8 != 0 && sps->bit_depth_luma_minus8 != 2)
 		/* Only 8-bit and 10-bit is supported */
 		return -EINVAL;
-- 
2.32.0