linux-kernel - Re: [RFC PATCH 07/12] media: iris: Add handling for corrupt and drop frames

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Message-ID: <8c96d87a-b31a-40a5-880a-242542806f7b@linaro.org>
Date: Thu, 6 Mar 2025 01:12:10 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>, quic_vgarodia@...cinc.com,
 quic_abhinavk@...cinc.com, mchehab@...nel.org
Cc: hverkuil@...all.nl, linux-media@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 07/12] media: iris: Add handling for corrupt and drop
 frames

On 05/03/2025 10:43, Dikshita Agarwal wrote:
> Firmware attach DATACORRUPT/DROP buffer flags for the frames which
> needs to be dropped, handle it by setting VB2_BUF_STATE_ERROR for these
> buffers before calling buf_done.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
>   drivers/media/platform/qcom/iris/iris_buffer.c        | 11 ++++++++---
>   .../media/platform/qcom/iris/iris_hfi_gen1_defines.h  |  2 ++
>   .../media/platform/qcom/iris/iris_hfi_gen1_response.c |  6 ++++++
>   3 files changed, 16 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_buffer.c b/drivers/media/platform/qcom/iris/iris_buffer.c
> index 305b630ca269..e5180340383b 100644
> --- a/drivers/media/platform/qcom/iris/iris_buffer.c
> +++ b/drivers/media/platform/qcom/iris/iris_buffer.c
> @@ -603,10 +603,13 @@ int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf)
>   
>   	vb2 = &vbuf->vb2_buf;
>   
> -	if (buf->flags & V4L2_BUF_FLAG_ERROR)
> +	if (buf->flags & V4L2_BUF_FLAG_ERROR) {
>   		state = VB2_BUF_STATE_ERROR;
> -	else
> -		state = VB2_BUF_STATE_DONE;
> +		vb2_set_plane_payload(vb2, 0, 0);
> +		vb2->timestamp = 0;
> +		v4l2_m2m_buf_done(vbuf, state);
> +		return 0;
> +	}
>   
>   	vbuf->flags |= buf->flags;
>   
> @@ -626,6 +629,8 @@ int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf)
>   			v4l2_m2m_mark_stopped(m2m_ctx);
>   		}
>   	}
> +
> +	state = VB2_BUF_STATE_DONE;
>   	vb2->timestamp = buf->timestamp;
>   	v4l2_m2m_buf_done(vbuf, state);
>   
> diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_defines.h b/drivers/media/platform/qcom/iris/iris_hfi_gen1_defines.h
> index 3bea643068f9..bfeeea643300 100644
> --- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_defines.h
> +++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_defines.h
> @@ -119,6 +119,8 @@
>   #define HFI_FRAME_NOTCODED				0x7f002000
>   #define HFI_FRAME_YUV					0x7f004000
>   #define HFI_UNUSED_PICT					0x10000000
> +#define HFI_BUFFERFLAG_DATACORRUPT			0x00000008
> +#define HFI_BUFFERFLAG_DROP_FRAME			0x20000000
>   
>   struct hfi_pkt_hdr {
>   	u32 size;
> diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c b/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
> index b72d503dd740..91d95eed68aa 100644
> --- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
> +++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
> @@ -481,6 +481,12 @@ static void iris_hfi_gen1_session_ftb_done(struct iris_inst *inst, void *packet)
>   	buf->attr |= BUF_ATTR_DEQUEUED;
>   	buf->attr |= BUF_ATTR_BUFFER_DONE;
>   
> +	if (hfi_flags & HFI_BUFFERFLAG_DATACORRUPT)
> +		flags |= V4L2_BUF_FLAG_ERROR;
> +
> +	if (hfi_flags & HFI_BUFFERFLAG_DROP_FRAME)
> +		flags |= V4L2_BUF_FLAG_ERROR;
> +
>   	buf->flags |= flags;
>   
>   	iris_vb2_buffer_done(inst, buf);

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>