Re: [PATCH 4/9] media: rkvdec: h264: Fix bit depth wrap in pps packet

[Ezequiel Garcia]

On Wed, 2020-07-01 at 21:56 +0000, Jonas Karlman wrote:
> The luma and chroma bit depth fields in the pps packet is 3 bits wide.
> 8 is wrongly added to the bit depth value written to these 3-bit fields.
> Because only the 3 LSB is written the hardware is configured correctly.
> 
> Correct this by not adding 8 to the luma and chroma bit depth value.
> 
> Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>

Reviewed-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>

Thanks!
Ezequiel

> ---
>  drivers/staging/media/rkvdec/rkvdec-h264.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/media/rkvdec/rkvdec-h264.c b/drivers/staging/media/rkvdec/rkvdec-h264.c
> index c9aebeb8f9b3..9c8e49642cd9 100644
> --- a/drivers/staging/media/rkvdec/rkvdec-h264.c
> +++ b/drivers/staging/media/rkvdec/rkvdec-h264.c
> @@ -662,8 +662,8 @@ static void assemble_hw_pps(struct rkvdec_ctx *ctx,
>  	WRITE_PPS(0xff, PROFILE_IDC);
>  	WRITE_PPS(1, CONSTRAINT_SET3_FLAG);
>  	WRITE_PPS(sps->chroma_format_idc, CHROMA_FORMAT_IDC);
> -	WRITE_PPS(sps->bit_depth_luma_minus8 + 8, BIT_DEPTH_LUMA);
> -	WRITE_PPS(sps->bit_depth_chroma_minus8 + 8, BIT_DEPTH_CHROMA);
> +	WRITE_PPS(sps->bit_depth_luma_minus8, BIT_DEPTH_LUMA);
> +	WRITE_PPS(sps->bit_depth_chroma_minus8, BIT_DEPTH_CHROMA);
>  	WRITE_PPS(0, QPPRIME_Y_ZERO_TRANSFORM_BYPASS_FLAG);
>  	WRITE_PPS(sps->log2_max_frame_num_minus4, LOG2_MAX_FRAME_NUM_MINUS4);
>  	WRITE_PPS(sps->max_num_ref_frames, MAX_NUM_REF_FRAMES);